config: make empty js= omit script tag

According to the cgitrc man page, an empty js= value should cause the script tag to be omitted. But instead, a script tag with an empty URL is emitted. The same applies to css. So, skip emitting a tag if the specified string is empty. Signed-off-by: Samuel Lidén Borell <samuel@kodafritt.se> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
js: add dynamic age update
75 changed files with 3610 additions and 3189 deletions
--- a/.gitmodules
+++ b/.gitmodules
@ -1,3 +1,3 @@
 [submodule "git"]
-	url = git://git.kernel.org/pub/scm/git/git.git
+	url = https://git.kernel.org/pub/scm/git/git.git
 	path = git
--- a/.mailmap
+++ b/.mailmap
@ -5,6 +5,6 @@ Lars Hjemli <hjemli@gmail.com> <larsh@hal-2004.(none)>
 Lars Hjemli <hjemli@gmail.com> <larsh@hatman.(none)>
 Lars Hjemli <hjemli@gmail.com> <larsh@slackbox.hjemli.net>
 Lars Hjemli <hjemli@gmail.com> <larsh@slaptop.hjemli.net>
-Lukas Fleischer <cgit@cryptocrack.de> <cgit@crytocrack.de>
-Lukas Fleischer <cgit@cryptocrack.de> <info@cryptocrack.de>
+Lukas Fleischer <lfleischer@lfos.de> <cgit@cryptocrack.de>
+Lukas Fleischer <lfleischer@lfos.de> <info@cryptocrack.de>
 Stefan Bühler <source@stbuehler.de> <lighttpd@stbuehler.de>
--- a/39
+++ b/39
@ -1,12 +1,12 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991

- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

-			    Preamble
+                            Preamble

  The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@ -15,7 +15,7 @@ software--to make sure the software is free for all its users.  This
 General Public License applies to most of the Free Software
 Foundation's software and to any other program whose authors commit to
 using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
+the GNU Lesser General Public License instead.)  You can apply it to
 your programs, too.

  When we speak of free software, we are referring to freedom, not
@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all.

  The precise terms and conditions for copying, distribution and
 modification follow.
-
-		    GNU GENERAL PUBLIC LICENSE
+
+                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions:
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)
-
+
 These requirements apply to the modified work as a whole.  If
 identifiable sections of that work are not derived from the Program,
 and can be reasonably considered independent and separate works in
@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent
 access to copy the source code from the same place counts as
 distribution of the source code, even though third parties are not
 compelled to copy the source along with the object code.
-
+
  4. You may not copy, modify, sublicense, or distribute the Program
 except as expressly provided under this License.  Any attempt
 otherwise to copy, modify, sublicense or distribute the Program is
@ -225,7 +225,7 @@ impose that choice.

 This section is intended to make thoroughly clear what is believed to
 be a consequence of the rest of this License.
-
+
  8. If the distribution and/or use of the Program is restricted in
 certain countries either by patents or by copyrighted interfaces, the
 original copyright holder who places the Program under this License
@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.

-			    NO WARRANTY
+                            NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.

-		     END OF TERMS AND CONDITIONS
-
-	    How to Apply These Terms to Your New Programs
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@ -303,10 +303,9 @@ the "copyright" line and a pointer to where the full notice is found.
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 Also add information on how to contact you by electronic and paper mail.

@ -336,5 +335,5 @@ necessary.  Here is a sample; alter the names:
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
+library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
--- a/23
+++ b/23
@ -1,6 +1,6 @@
 all::

-CGIT_VERSION = v0.11.2
+CGIT_VERSION = v1.2.3
 CGIT_SCRIPT_NAME = cgit.cgi
 CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
 CGIT_DATA_PATH = $(CGIT_SCRIPT_PATH)
@ -14,8 +14,8 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.3.2
-GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.gz
+GIT_VER = 2.39.0
+GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.xz
 INSTALL = install
 COPYTREE = cp -r
 MAN5_TXT = $(wildcard *.5.txt)
@ -24,6 +24,12 @@ DOC_MAN5 = $(patsubst %.txt,%,$(MAN5_TXT))
 DOC_HTML = $(patsubst %.txt,%.html,$(MAN_TXT))
 DOC_PDF  = $(patsubst %.txt,%.pdf,$(MAN_TXT))

+ASCIIDOC = asciidoc
+ASCIIDOC_EXTRA =
+ASCIIDOC_HTML = xhtml11
+ASCIIDOC_COMMON = $(ASCIIDOC) $(ASCIIDOC_EXTRA)
+TXT_TO_HTML = $(ASCIIDOC_COMMON) -b $(ASCIIDOC_HTML)
+
 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
@ -33,6 +39,7 @@ DOC_PDF  = $(patsubst %.txt,%.pdf,$(MAN_TXT))

 #-include config.mak

+-include git/config.mak.uname
 #
 # Let the user override the above settings.
 #
@ -47,7 +54,7 @@ export CGIT_VERSION CGIT_SCRIPT_NAME CGIT_SCRIPT_PATH CGIT_DATA_PATH CGIT_CONFIG
 QUIET_SUBDIR0  = +$(MAKE) -C # space to separate -C and subdir
 QUIET_SUBDIR1  =

-ifneq ($(findstring $(MAKEFLAGS),w),w)
+ifneq ($(findstring w,$(MAKEFLAGS)),w)
 PRINT_DIR = --no-print-directory
 else # "make -w"
 NO_SUBDIR = :
@ -80,11 +87,12 @@ install: all
 	$(INSTALL) -m 0755 cgit $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
 	$(INSTALL) -m 0755 -d $(DESTDIR)$(CGIT_DATA_PATH)
 	$(INSTALL) -m 0644 cgit.css $(DESTDIR)$(CGIT_DATA_PATH)/cgit.css
+	$(INSTALL) -m 0644 cgit.js $(DESTDIR)$(CGIT_DATA_PATH)/cgit.js
 	$(INSTALL) -m 0644 cgit.png $(DESTDIR)$(CGIT_DATA_PATH)/cgit.png
 	$(INSTALL) -m 0644 favicon.ico $(DESTDIR)$(CGIT_DATA_PATH)/favicon.ico
 	$(INSTALL) -m 0644 robots.txt $(DESTDIR)$(CGIT_DATA_PATH)/robots.txt
 	$(INSTALL) -m 0755 -d $(DESTDIR)$(filterdir)
-	$(COPYTREE)  filters/* $(DESTDIR)$(filterdir)
+	$(COPYTREE) filters/* $(DESTDIR)$(filterdir)

 install-doc: install-man install-html install-pdf

@ -133,7 +141,8 @@ doc-pdf: $(DOC_PDF)
 	a2x -f manpage $<

 $(DOC_HTML): %.html : %.txt
-	a2x -f xhtml --stylesheet=cgit-doc.css $<
+	$(TXT_TO_HTML) -o $@+ $< && \
+	mv $@+ $@

 $(DOC_PDF): %.pdf : %.txt
 	a2x -f pdf cgitrc.5.txt
@ -149,7 +158,7 @@ clean-doc:
 	$(RM) cgitrc.5 cgitrc.5.html cgitrc.5.pdf cgitrc.5.xml cgitrc.5.fo

 get-git:
-	curl -L $(GIT_URL) | tar -xzf - && rm -rf git && mv git-$(GIT_VER) git
+	curl -L $(GIT_URL) | tar -xJf - && rm -rf git && mv git-$(GIT_VER) git

 tags:
 	$(QUIET_TAGS)find . -name '*.[ch]' | xargs ctags
--- a/4
+++ b/4
@ -92,8 +92,8 @@ the HTTP headers `Modified` and `Expires`.
 Online presence
 ---------------

-* The cgit homepage is hosted by cgit at <http://git.zx2c4.com/cgit/about/>
+* The cgit homepage is hosted by cgit at <https://git.zx2c4.com/cgit/about/>

 * Patches, bug reports, discussions and support should go to the cgit
  mailing list: <cgit@lists.zx2c4.com>. To sign up, visit
-  <http://lists.zx2c4.com/mailman/listinfo/cgit>
+  <https://lists.zx2c4.com/mailman/listinfo/cgit>
--- a/cache.c
+++ b/cache.c
@ -13,22 +13,23 @@
 *
 */

-#ifdef HAVE_LINUX_SENDFILE
-#include <sys/sendfile.h>
-#endif
 #include "cgit.h"
 #include "cache.h"
 #include "html.h"
+#ifdef HAVE_LINUX_SENDFILE
+#include <sys/sendfile.h>
+#endif

 #define CACHE_BUFSIZE (1024 * 4)

 struct cache_slot {
 	const char *key;
-	int keylen;
+	size_t keylen;
 	int ttl;
 	cache_fill_fn fn;
 	int cache_fd;
 	int lock_fd;
+	int stdout_fd;
 	const char *cache_name;
 	const char *lock_name;
 	int match;
@ -44,7 +45,7 @@ struct cache_slot {
 static int open_slot(struct cache_slot *slot)
 {
 	char *bufz;
-	int bufkeylen = -1;
+	ssize_t bufkeylen = -1;

 	slot->cache_fd = open(slot->cache_name, O_RDONLY);
 	if (slot->cache_fd == -1)
@ -61,8 +62,9 @@ static int open_slot(struct cache_slot *slot)
 	if (bufz)
 		bufkeylen = bufz - slot->buf;

-	slot->match = bufkeylen == slot->keylen &&
-	    !memcmp(slot->key, slot->buf, bufkeylen + 1);
+	if (slot->key)
+		slot->match = bufkeylen == slot->keylen &&
+		    !memcmp(slot->key, slot->buf, bufkeylen + 1);

 	return 0;
 }
@ -83,40 +85,45 @@ static int close_slot(struct cache_slot *slot)
 /* Print the content of the active cache slot (but skip the key). */
 static int print_slot(struct cache_slot *slot)
 {
+	off_t off;
 #ifdef HAVE_LINUX_SENDFILE
-	off_t start_off;
-	int ret;
+	off_t size;
+#endif

-	start_off = slot->keylen + 1;
+	off = slot->keylen + 1;
+
+#ifdef HAVE_LINUX_SENDFILE
+	size = slot->cache_st.st_size;

 	do {
-		ret = sendfile(STDOUT_FILENO, slot->cache_fd, &start_off,
-				slot->cache_st.st_size - start_off);
+		ssize_t ret;
+		ret = sendfile(STDOUT_FILENO, slot->cache_fd, &off, size - off);
 		if (ret < 0) {
 			if (errno == EAGAIN || errno == EINTR)
 				continue;
+			/* Fall back to read/write on EINVAL or ENOSYS */
+			if (errno == EINVAL || errno == ENOSYS)
+				break;
 			return errno;
 		}
-		return 0;
+		if (off == size)
+			return 0;
 	} while (1);
-#else
-	ssize_t i, j;
+#endif

-	i = lseek(slot->cache_fd, slot->keylen + 1, SEEK_SET);
-	if (i != slot->keylen + 1)
+	if (lseek(slot->cache_fd, off, SEEK_SET) != off)
 		return errno;

 	do {
-		i = j = xread(slot->cache_fd, slot->buf, sizeof(slot->buf));
-		if (i > 0)
-			j = xwrite(STDOUT_FILENO, slot->buf, i);
-	} while (i > 0 && j == i);
-
-	if (i < 0 || j != i)
-		return errno;
-	else
-		return 0;
-#endif
+		ssize_t ret;
+		ret = xread(slot->cache_fd, slot->buf, sizeof(slot->buf));
+		if (ret < 0)
+			return errno;
+		if (ret == 0)
+			return 0;
+		if (write_in_full(STDOUT_FILENO, slot->buf, ret) < 0)
+			return errno;
+	} while (1);
 }

 /* Check if the slot has expired */
@ -196,6 +203,13 @@ static int unlock_slot(struct cache_slot *slot, int replace_old_slot)
 	else
 		err = unlink(slot->lock_name);

+	/* Restore stdout and close the temporary FD. */
+	if (slot->stdout_fd >= 0) {
+		dup2(slot->stdout_fd, STDOUT_FILENO);
+		close(slot->stdout_fd);
+		slot->stdout_fd = -1;
+	}
+
 	if (err)
 		return errno;

@ -207,11 +221,9 @@ static int unlock_slot(struct cache_slot *slot, int replace_old_slot)
 */
 static int fill_slot(struct cache_slot *slot)
 {
-	int tmp;
-
 	/* Preserve stdout */
-	tmp = dup(STDOUT_FILENO);
-	if (tmp == -1)
+	slot->stdout_fd = dup(STDOUT_FILENO);
+	if (slot->stdout_fd == -1)
 		return errno;

 	/* Redirect stdout to lockfile */
@ -221,16 +233,12 @@ static int fill_slot(struct cache_slot *slot)
 	/* Generate cache content */
 	slot->fn();

-	/* update stat info */
-	if (fstat(slot->lock_fd, &slot->cache_st))
+	/* Make sure any buffered data is flushed to the file */
+	if (fflush(stdout))
 		return errno;

-	/* Restore stdout */
-	if (dup2(tmp, STDOUT_FILENO) == -1)
-		return errno;
-
-	/* Close the temporary filedescriptor */
-	if (close(tmp))
+	/* update stat info */
+	if (fstat(slot->lock_fd, &slot->cache_st))
 		return errno;

 	return 0;
@ -305,7 +313,7 @@ static int process_slot(struct cache_slot *slot)
 	/* If the cache slot does not exist (or its key doesn't match the
 	 * current key), lets try to create a new cache slot for this
 	 * request. If this fails (for whatever reason), lets just generate
-	 * the content without caching it and fool the caller to belive
+	 * the content without caching it and fool the caller to believe
 	 * everything worked out (but print a warning on stdout).
 	 */

@ -380,6 +388,7 @@ int cache_process(int size, const char *path, const char *key, int ttl,
 	strbuf_addstr(&lockname, ".lock");
 	slot.fn = fn;
 	slot.ttl = ttl;
+	slot.stdout_fd = -1;
 	slot.cache_name = filename.buf;
 	slot.lock_name = lockname.buf;
 	slot.key = key;
@ -397,12 +406,12 @@ int cache_process(int size, const char *path, const char *key, int ttl,
 static char *sprintftime(const char *format, time_t time)
 {
 	static char buf[64];
-	struct tm *tm;
+	struct tm tm;

 	if (!time)
 		return NULL;
-	tm = gmtime(&time);
-	strftime(buf, sizeof(buf)-1, format, tm);
+	gmtime_r(&time, &tm);
+	strftime(buf, sizeof(buf)-1, format, &tm);
 	return buf;
 }

--- a/cache.h
+++ b/cache.h
@ -19,7 +19,7 @@ typedef void (*cache_fill_fn)(void);
 *   fn      content generator function for this key
 *
 * Return value
- *   0 indicates success, everyting else is an error
+ *   0 indicates success, everything else is an error
 */
 extern int cache_process(int size, const char *path, const char *key, int ttl,
 			 cache_fill_fn fn);
--- a/cgit-doc.css
+++ b/cgit-doc.css
@ -1,3 +0,0 @@
-div.variablelist dt {
-	margin-top: 1em;
-}
--- a/cgit.c
+++ b/cgit.c
@ -19,11 +19,21 @@

 const char *cgit_version = CGIT_VERSION;

+__attribute__((constructor))
+static void constructor_environment()
+{
+	/* Do not look in /etc/ for gitconfig and gitattributes. */
+	setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
+	setenv("GIT_ATTR_NOSYSTEM", "1", 1);
+	unsetenv("HOME");
+	unsetenv("XDG_CONFIG_HOME");
+}
+
 static void add_mimetype(const char *name, const char *value)
 {
 	struct string_list_item *item;

-	item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
+	item = string_list_insert(&ctx.cfg.mimetypes, name);
 	item->util = xstrdup(value);
 }

@ -31,6 +41,7 @@ static void process_cached_repolist(const char *path);

 static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
 {
+	const char *path;
 	struct string_list_item *item;

 	if (!strcmp(name, "name"))
@ -41,10 +52,16 @@ static void repo_config(struct cgit_repo *repo, const char *name, const char *va
 		repo->desc = xstrdup(value);
 	else if (!strcmp(name, "owner"))
 		repo->owner = xstrdup(value);
+	else if (!strcmp(name, "homepage"))
+		repo->homepage = xstrdup(value);
 	else if (!strcmp(name, "defbranch"))
 		repo->defbranch = xstrdup(value);
+	else if (!strcmp(name, "extra-head-content"))
+		repo->extra_head_content = xstrdup(value);
 	else if (!strcmp(name, "snapshots"))
 		repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
+	else if (!strcmp(name, "enable-blame"))
+		repo->enable_blame = atoi(value);
 	else if (!strcmp(name, "enable-commit-graph"))
 		repo->enable_commit_graph = atoi(value);
 	else if (!strcmp(name, "enable-log-filecount"))
@ -55,6 +72,8 @@ static void repo_config(struct cgit_repo *repo, const char *name, const char *va
 		repo->enable_remote_branches = atoi(value);
 	else if (!strcmp(name, "enable-subject-links"))
 		repo->enable_subject_links = atoi(value);
+	else if (!strcmp(name, "enable-html-serving"))
+		repo->enable_html_serving = atoi(value);
 	else if (!strcmp(name, "branch-sort")) {
 		if (!strcmp(value, "age"))
 			repo->branch_sort = 1;
@ -69,11 +88,13 @@ static void repo_config(struct cgit_repo *repo, const char *name, const char *va
 		repo->max_stats = cgit_find_stats_period(value, NULL);
 	else if (!strcmp(name, "module-link"))
 		repo->module_link= xstrdup(value);
-	else if (starts_with(name, "module-link.")) {
-		item = string_list_append(&repo->submodules, xstrdup(name + 12));
+	else if (skip_prefix(name, "module-link.", &path)) {
+		item = string_list_append(&repo->submodules, xstrdup(path));
 		item->util = xstrdup(value);
 	} else if (!strcmp(name, "section"))
 		repo->section = xstrdup(value);
+	else if (!strcmp(name, "snapshot-prefix"))
+		repo->snapshot_prefix = xstrdup(value);
 	else if (!strcmp(name, "readme") && value != NULL) {
 		if (repo->readme.items == ctx.cfg.readme.items)
 			memset(&repo->readme, 0, sizeof(repo->readme));
@ -82,6 +103,10 @@ static void repo_config(struct cgit_repo *repo, const char *name, const char *va
 		repo->logo = xstrdup(value);
 	else if (!strcmp(name, "logo-link") && value != NULL)
 		repo->logo_link = xstrdup(value);
+	else if (!strcmp(name, "hide"))
+		repo->hide = atoi(value);
+	else if (!strcmp(name, "ignore"))
+		repo->ignore = atoi(value);
 	else if (ctx.cfg.enable_filter_overrides) {
 		if (!strcmp(name, "about-filter"))
 			repo->about_filter = cgit_new_filter(value, ABOUT);
@ -93,24 +118,22 @@ static void repo_config(struct cgit_repo *repo, const char *name, const char *va
 			repo->email_filter = cgit_new_filter(value, EMAIL);
 		else if (!strcmp(name, "owner-filter"))
 			repo->owner_filter = cgit_new_filter(value, OWNER);
-	} else if (!strcmp(name, "hide")) {
-		repo->hide = atoi(value);
-	} else if (!strcmp(name, "ignore")) {
-		repo->ignore = atoi(value);
 	}
 }

 static void config_cb(const char *name, const char *value)
 {
-	if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
+	const char *arg;
+
+	if (!strcmp(name, "section"))
 		ctx.cfg.section = xstrdup(value);
 	else if (!strcmp(name, "repo.url"))
 		ctx.repo = cgit_add_repo(value);
 	else if (ctx.repo && !strcmp(name, "repo.path"))
 		ctx.repo->path = trim_end(value, '/');
-	else if (ctx.repo && starts_with(name, "repo."))
-		repo_config(ctx.repo, name + 5, value);
-	else if (!strcmp(name, "readme") && value != NULL)
+	else if (ctx.repo && skip_prefix(name, "repo.", &arg))
+		repo_config(ctx.repo, arg, value);
+	else if (!strcmp(name, "readme"))
 		string_list_append(&ctx.cfg.readme, xstrdup(value));
 	else if (!strcmp(name, "root-title"))
 		ctx.cfg.root_title = xstrdup(value);
@ -119,7 +142,9 @@ static void config_cb(const char *name, const char *value)
 	else if (!strcmp(name, "root-readme"))
 		ctx.cfg.root_readme = xstrdup(value);
 	else if (!strcmp(name, "css"))
-		ctx.cfg.css = xstrdup(value);
+		string_list_append(&ctx.cfg.css, xstrdup(value));
+	else if (!strcmp(name, "js"))
+		string_list_append(&ctx.cfg.js, xstrdup(value));
 	else if (!strcmp(name, "favicon"))
 		ctx.cfg.favicon = xstrdup(value);
 	else if (!strcmp(name, "footer"))
@ -130,20 +155,14 @@ static void config_cb(const char *name, const char *value)
 		ctx.cfg.header = xstrdup(value);
 	else if (!strcmp(name, "logo"))
 		ctx.cfg.logo = xstrdup(value);
-	else if (!strcmp(name, "index-header"))
-		ctx.cfg.index_header = xstrdup(value);
-	else if (!strcmp(name, "index-info"))
-		ctx.cfg.index_info = xstrdup(value);
 	else if (!strcmp(name, "logo-link"))
 		ctx.cfg.logo_link = xstrdup(value);
 	else if (!strcmp(name, "module-link"))
 		ctx.cfg.module_link = xstrdup(value);
 	else if (!strcmp(name, "strict-export"))
 		ctx.cfg.strict_export = xstrdup(value);
-	else if (!strcmp(name, "virtual-root")) {
+	else if (!strcmp(name, "virtual-root"))
 		ctx.cfg.virtual_root = ensure_end(value, '/');
-	} else if (!strcmp(name, "nocache"))
-		ctx.cfg.nocache = atoi(value);
 	else if (!strcmp(name, "noplainemail"))
 		ctx.cfg.noplainemail = atoi(value);
 	else if (!strcmp(name, "noheader"))
@ -152,12 +171,16 @@ static void config_cb(const char *name, const char *value)
 		ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
 	else if (!strcmp(name, "enable-filter-overrides"))
 		ctx.cfg.enable_filter_overrides = atoi(value);
+	else if (!strcmp(name, "enable-follow-links"))
+		ctx.cfg.enable_follow_links = atoi(value);
 	else if (!strcmp(name, "enable-http-clone"))
 		ctx.cfg.enable_http_clone = atoi(value);
 	else if (!strcmp(name, "enable-index-links"))
 		ctx.cfg.enable_index_links = atoi(value);
 	else if (!strcmp(name, "enable-index-owner"))
 		ctx.cfg.enable_index_owner = atoi(value);
+	else if (!strcmp(name, "enable-blame"))
+		ctx.cfg.enable_blame = atoi(value);
 	else if (!strcmp(name, "enable-commit-graph"))
 		ctx.cfg.enable_commit_graph = atoi(value);
 	else if (!strcmp(name, "enable-log-filecount"))
@ -168,6 +191,8 @@ static void config_cb(const char *name, const char *value)
 		ctx.cfg.enable_remote_branches = atoi(value);
 	else if (!strcmp(name, "enable-subject-links"))
 		ctx.cfg.enable_subject_links = atoi(value);
+	else if (!strcmp(name, "enable-html-serving"))
+		ctx.cfg.enable_html_serving = atoi(value);
 	else if (!strcmp(name, "enable-tree-linenumbers"))
 		ctx.cfg.enable_tree_linenumbers = atoi(value);
 	else if (!strcmp(name, "enable-git-config"))
@ -214,14 +239,16 @@ static void config_cb(const char *name, const char *value)
 		ctx.cfg.max_repodesc_len = atoi(value);
 	else if (!strcmp(name, "max-blob-size"))
 		ctx.cfg.max_blob_size = atoi(value);
-	else if (!strcmp(name, "max-repo-count"))
+	else if (!strcmp(name, "max-repo-count")) {
 		ctx.cfg.max_repo_count = atoi(value);
-	else if (!strcmp(name, "max-commit-count"))
+		if (ctx.cfg.max_repo_count <= 0)
+			ctx.cfg.max_repo_count = INT_MAX;
+	} else if (!strcmp(name, "max-commit-count"))
 		ctx.cfg.max_commit_count = atoi(value);
 	else if (!strcmp(name, "project-list"))
 		ctx.cfg.project_list = xstrdup(expand_macros(value));
 	else if (!strcmp(name, "scan-path"))
-		if (!ctx.cfg.nocache && ctx.cfg.cache_size)
+		if (ctx.cfg.cache_size)
 			process_cached_repolist(expand_macros(value));
 		else if (ctx.cfg.project_list)
 			scan_projects(expand_macros(value),
@ -272,8 +299,8 @@ static void config_cb(const char *name, const char *value)
 			ctx.cfg.branch_sort = 1;
 		if (!strcmp(value, "name"))
 			ctx.cfg.branch_sort = 0;
-	} else if (starts_with(name, "mimetype."))
-		add_mimetype(name + 9, value);
+	} else if (skip_prefix(name, "mimetype.", &arg))
+		add_mimetype(arg, value);
 	else if (!strcmp(name, "include"))
 		parse_configfile(expand_macros(value), config_cb);
 }
@ -301,19 +328,17 @@ static void querystring_cb(const char *name, const char *value)
 		ctx.qry.head = xstrdup(value);
 		ctx.qry.has_symref = 1;
 	} else if (!strcmp(name, "id")) {
-		ctx.qry.sha1 = xstrdup(value);
-		ctx.qry.has_sha1 = 1;
+		ctx.qry.oid = xstrdup(value);
+		ctx.qry.has_oid = 1;
 	} else if (!strcmp(name, "id2")) {
-		ctx.qry.sha2 = xstrdup(value);
-		ctx.qry.has_sha1 = 1;
+		ctx.qry.oid2 = xstrdup(value);
+		ctx.qry.has_oid = 1;
 	} else if (!strcmp(name, "ofs")) {
 		ctx.qry.ofs = atoi(value);
 	} else if (!strcmp(name, "path")) {
 		ctx.qry.path = trim_end(value, '/');
 	} else if (!strcmp(name, "name")) {
 		ctx.qry.name = xstrdup(value);
-	} else if (!strcmp(name, "mimetype")) {
-		ctx.qry.mimetype = xstrdup(value);
 	} else if (!strcmp(name, "s")) {
 		ctx.qry.sort = xstrdup(value);
 	} else if (!strcmp(name, "showmsg")) {
@ -333,6 +358,8 @@ static void querystring_cb(const char *name, const char *value)
 		ctx.qry.context = atoi(value);
 	} else if (!strcmp(name, "ignorews")) {
 		ctx.qry.ignorews = atoi(value);
+	} else if (!strcmp(name, "follow")) {
+		ctx.qry.follow = atoi(value);
 	}
 }

@ -340,7 +367,6 @@ static void prepare_context(void)
 {
 	memset(&ctx, 0, sizeof(ctx));
 	ctx.cfg.agefile = "info/web/last-modified";
-	ctx.cfg.nocache = 0;
 	ctx.cfg.cache_size = 0;
 	ctx.cfg.cache_max_create_time = 5;
 	ctx.cfg.cache_root = CGIT_CACHE_ROOT;
@ -354,7 +380,6 @@ static void prepare_context(void)
 	ctx.cfg.case_sensitive_sort = 1;
 	ctx.cfg.branch_sort = 0;
 	ctx.cfg.commit_sort = 0;
-	ctx.cfg.css = "/cgit.css";
 	ctx.cfg.logo = "/cgit.png";
 	ctx.cfg.favicon = "/favicon.ico";
 	ctx.cfg.local_time = 0;
@ -406,7 +431,7 @@ static void prepare_context(void)
 	ctx.page.modified = time(NULL);
 	ctx.page.expires = ctx.page.modified;
 	ctx.page.etag = NULL;
-	memset(&ctx.cfg.mimetypes, 0, sizeof(struct string_list));
+	string_list_init_dup(&ctx.cfg.mimetypes);
 	if (ctx.env.script_name)
 		ctx.cfg.script_name = xstrdup(ctx.env.script_name);
 	if (ctx.env.query_string)
@ -421,7 +446,7 @@ struct refmatch {
 	int match;
 };

-static int find_current_ref(const char *refname, const unsigned char *sha1,
+static int find_current_ref(const char *refname, const struct object_id *oid,
 			    int flags, void *cb_data)
 {
 	struct refmatch *info;
@ -462,14 +487,15 @@ static char *find_default_branch(struct cgit_repo *repo)

 static char *guess_defbranch(void)
 {
-	const char *ref;
-	unsigned char sha1[20];
+	const char *ref, *refname;
+	struct object_id oid;

-	ref = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
-	if (!ref || !starts_with(ref, "refs/heads/"))
+	ref = resolve_ref_unsafe("HEAD", 0, &oid, NULL);
+	if (!ref || !skip_prefix(ref, "refs/heads/", &refname))
 		return "master";
-	return xstrdup(ref + 11);
+	return xstrdup(refname);
 }
+
 /* The caller must free filename and ref after calling this. */
 static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
 {
@ -484,9 +510,11 @@ static inline void parse_readme(const char *readme, char **filename, char **ref,
 	/* Check if the readme is tracked in the git repo. */
 	colon = strchr(readme, ':');
 	if (colon && strlen(colon) > 1) {
-		/* If it starts with a colon, we want to use
-		 * the default branch */
-		if (colon == readme && repo->defbranch)
+		/* If it starts with a colon, we want to use head given
+		 * from query or the default branch */
+		if (colon == readme && ctx.qry.head)
+			*ref = xstrdup(ctx.qry.head);
+		else if (colon == readme && repo->defbranch)
 			*ref = xstrdup(repo->defbranch);
 		else
 			*ref = xstrndup(readme, colon - readme);
@ -547,26 +575,22 @@ static void print_no_repo_clone_urls(const char *url)
        html("</a></td></tr>\n");
 }

-static int prepare_repo_cmd(void)
+static void prepare_repo_env(int *nongit)
 {
-	unsigned char sha1[20];
-	int nongit = 0;
-	int rc;
-
 	/* The path to the git repository. */
 	setenv("GIT_DIR", ctx.repo->path, 1);

-	/* Do not look in /etc/ for gitconfig and gitattributes. */
-	setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
-	setenv("GIT_ATTR_NOSYSTEM", "1", 1);
-	unsetenv("HOME");
-	unsetenv("XDG_CONFIG_HOME");
-
 	/* Setup the git directory and initialize the notes system. Both of these
 	 * load local configuration from the git repository, so we do them both while
 	 * the HOME variables are unset. */
-	setup_git_directory_gently(&nongit);
-	init_display_notes(NULL);
+	setup_git_directory_gently(nongit);
+	load_display_notes(NULL);
+}
+
+static int prepare_repo_cmd(int nongit)
+{
+	struct object_id oid;
+	int rc;

 	if (nongit) {
 		const char *name = ctx.repo->name;
@ -607,17 +631,12 @@ static int prepare_repo_cmd(void)
 		return 1;
 	}

-	if (get_sha1(ctx.qry.head, sha1)) {
-		char *tmp = xstrdup(ctx.qry.head);
-		ctx.qry.head = ctx.repo->defbranch;
-		ctx.page.status = 404;
-		ctx.page.statusmsg = "Not found";
-		cgit_print_http_headers();
-		cgit_print_docstart();
-		cgit_print_pageheader();
-		cgit_print_error("Invalid branch: %s", tmp);
-		cgit_print_docend();
-		free(tmp);
+	if (get_oid(ctx.qry.head, &oid)) {
+		char *old_head = ctx.qry.head;
+		ctx.qry.head = xstrdup(ctx.repo->defbranch);
+		cgit_print_error_page(404, "Not found",
+				"Invalid branch: %s", old_head);
+		free(old_head);
 		return 1;
 	}
 	string_list_sort(&ctx.repo->submodules);
@ -638,7 +657,7 @@ static inline void open_auth_filter(const char *function)
 		ctx.env.https ? ctx.env.https : "",
 		ctx.qry.repo ? ctx.qry.repo : "",
 		ctx.qry.page ? ctx.qry.page : "",
-		ctx.qry.url ? ctx.qry.url : "",
+		cgit_currentfullurl(),
 		cgit_loginurl());
 }

@ -652,13 +671,13 @@ static inline void open_auth_filter(const char *function)
 static inline void authenticate_post(void)
 {
 	char buffer[MAX_AUTHENTICATION_POST_BYTES];
-	int len;
+	ssize_t len;

 	open_auth_filter("authenticate-post");
 	len = ctx.env.content_length;
 	if (len > MAX_AUTHENTICATION_POST_BYTES)
 		len = MAX_AUTHENTICATION_POST_BYTES;
-	if (read(STDIN_FILENO, buffer, len) < 0)
+	if ((len = read(STDIN_FILENO, buffer, len)) < 0)
 		die_errno("Could not read POST from stdin");
 	if (write(STDOUT_FILENO, buffer, len) < 0)
 		die_errno("Could not write POST to stdout");
@ -691,6 +710,7 @@ static inline void authenticate_cookie(void)
 static void process_request(void)
 {
 	struct cgit_cmd *cmd;
+	int nongit = 0;

 	/* If we're not yet authenticated, no matter what page we're on,
 	 * display the authentication body from the auth_filter. This should
@ -706,21 +726,25 @@ static void process_request(void)
 		return;
 	}

+	if (ctx.repo)
+		prepare_repo_env(&nongit);
+
 	cmd = cgit_get_cmd();
 	if (!cmd) {
 		ctx.page.title = "cgit error";
-		ctx.page.status = 404;
-		ctx.page.statusmsg = "Not found";
-		cgit_print_http_headers();
-		cgit_print_docstart();
-		cgit_print_pageheader();
-		cgit_print_error("Invalid request");
-		cgit_print_docend();
+		cgit_print_error_page(404, "Not found", "Invalid request");
 		return;
 	}

 	if (!ctx.cfg.enable_http_clone && cmd->is_clone) {
-		html_status(404, "Not found", 0);
+		ctx.page.title = "cgit error";
+		cgit_print_error_page(404, "Not found", "Invalid request");
+		return;
+	}
+
+	if (cmd->want_repo && !ctx.repo) {
+		cgit_print_error_page(400, "Bad request",
+				"No repository selected");
 		return;
 	}

@ -730,28 +754,10 @@ static void process_request(void)
 	 */
 	ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;

-	if (cmd->want_repo && !ctx.repo) {
-		cgit_print_http_headers();
-		cgit_print_docstart();
-		cgit_print_pageheader();
-		cgit_print_error("No repository selected");
-		cgit_print_docend();
-		return;
-	}
-
-	if (ctx.repo && prepare_repo_cmd())
+	if (ctx.repo && prepare_repo_cmd(nongit))
 		return;

-	if (cmd->want_layout) {
-		cgit_print_http_headers();
-		cgit_print_docstart();
-		cgit_print_pageheader();
-	}
-
 	cmd->fn();
-
-	if (cmd->want_layout)
-		cgit_print_docend();
 }

 static int cmp_repos(const void *a, const void *b)
@ -766,7 +772,7 @@ static char *build_snapshot_setting(int bitmap)
 	struct strbuf result = STRBUF_INIT;

 	for (f = cgit_snapshot_formats; f->suffix; f++) {
-		if (f->bit & bitmap) {
+		if (cgit_snapshot_format_bit(f) & bitmap) {
 			if (result.len)
 				strbuf_addch(&result, ' ');
 			strbuf_addstr(&result, f->suffix);
@ -805,12 +811,18 @@ static void print_repo(FILE *f, struct cgit_repo *repo)
 	}
 	if (repo->defbranch)
 		fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
+	if (repo->extra_head_content)
+		fprintf(f, "repo.extra-head-content=%s\n", repo->extra_head_content);
 	if (repo->module_link)
 		fprintf(f, "repo.module-link=%s\n", repo->module_link);
 	if (repo->section)
 		fprintf(f, "repo.section=%s\n", repo->section);
+	if (repo->homepage)
+		fprintf(f, "repo.homepage=%s\n", repo->homepage);
 	if (repo->clone_url)
 		fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
+	fprintf(f, "repo.enable-blame=%d\n",
+	        repo->enable_blame);
 	fprintf(f, "repo.enable-commit-graph=%d\n",
 	        repo->enable_commit_graph);
 	fprintf(f, "repo.enable-log-filecount=%d\n",
@ -832,6 +844,8 @@ static void print_repo(FILE *f, struct cgit_repo *repo)
 		fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
 		free(tmp);
 	}
+	if (repo->snapshot_prefix)
+		fprintf(f, "repo.snapshot-prefix=%s\n", repo->snapshot_prefix);
 	if (repo->max_stats != ctx.cfg.max_stats)
 		fprintf(f, "repo.max-stats=%s\n",
 		        cgit_find_stats_periodname(repo->max_stats));
@ -841,6 +855,7 @@ static void print_repo(FILE *f, struct cgit_repo *repo)
 		fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
 	fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
 	fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
+	fprintf(f, "repo.enable-html-serving=%d\n", repo->enable_html_serving);
 	if (repo->branch_sort == 1)
 		fprintf(f, "repo.branch-sort=age\n");
 	if (repo->commit_sort) {
@ -948,11 +963,12 @@ out:
 static void cgit_parse_args(int argc, const char **argv)
 {
 	int i;
+	const char *arg;
 	int scan = 0;

 	for (i = 1; i < argc; i++) {
 		if (!strcmp(argv[i], "--version")) {
-			printf("CGit %s | http://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
+			printf("CGit %s | https://git.zx2c4.com/cgit/\n\nCompiled in features:\n", CGIT_VERSION);
 #ifdef NO_LUA
 			printf("[-] ");
 #else
@ -968,28 +984,26 @@ static void cgit_parse_args(int argc, const char **argv)

 			exit(0);
 		}
-		if (starts_with(argv[i], "--cache=")) {
-			ctx.cfg.cache_root = xstrdup(argv[i] + 8);
-		} else if (!strcmp(argv[i], "--nocache")) {
-			ctx.cfg.nocache = 1;
+		if (skip_prefix(argv[i], "--cache=", &arg)) {
+			ctx.cfg.cache_root = xstrdup(arg);
 		} else if (!strcmp(argv[i], "--nohttp")) {
 			ctx.env.no_http = "1";
-		} else if (starts_with(argv[i], "--query=")) {
-			ctx.qry.raw = xstrdup(argv[i] + 8);
-		} else if (starts_with(argv[i], "--repo=")) {
-			ctx.qry.repo = xstrdup(argv[i] + 7);
-		} else if (starts_with(argv[i], "--page=")) {
-			ctx.qry.page = xstrdup(argv[i] + 7);
-		} else if (starts_with(argv[i], "--head=")) {
-			ctx.qry.head = xstrdup(argv[i] + 7);
+		} else if (skip_prefix(argv[i], "--query=", &arg)) {
+			ctx.qry.raw = xstrdup(arg);
+		} else if (skip_prefix(argv[i], "--repo=", &arg)) {
+			ctx.qry.repo = xstrdup(arg);
+		} else if (skip_prefix(argv[i], "--page=", &arg)) {
+			ctx.qry.page = xstrdup(arg);
+		} else if (skip_prefix(argv[i], "--head=", &arg)) {
+			ctx.qry.head = xstrdup(arg);
 			ctx.qry.has_symref = 1;
-		} else if (starts_with(argv[i], "--sha1=")) {
-			ctx.qry.sha1 = xstrdup(argv[i] + 7);
-			ctx.qry.has_sha1 = 1;
-		} else if (starts_with(argv[i], "--ofs=")) {
-			ctx.qry.ofs = atoi(argv[i] + 6);
-		} else if (starts_with(argv[i], "--scan-tree=") ||
-		           starts_with(argv[i], "--scan-path=")) {
+		} else if (skip_prefix(argv[i], "--oid=", &arg)) {
+			ctx.qry.oid = xstrdup(arg);
+			ctx.qry.has_oid = 1;
+		} else if (skip_prefix(argv[i], "--ofs=", &arg)) {
+			ctx.qry.ofs = atoi(arg);
+		} else if (skip_prefix(argv[i], "--scan-tree=", &arg) ||
+		           skip_prefix(argv[i], "--scan-path=", &arg)) {
 			/*
 			 * HACK: The global snapshot bit mask defines the set
 			 * of allowed snapshot formats, but the config file
@ -1003,7 +1017,7 @@ static void cgit_parse_args(int argc, const char **argv)
 			 */
 			ctx.cfg.snapshots = 0xFF;
 			scan++;
-			scan_tree(argv[i] + 12, repo_config);
+			scan_tree(arg, repo_config);
 		}
 	}
 	if (scan) {
@ -1028,7 +1042,7 @@ static int calc_ttl(void)
 	if (!strcmp(ctx.qry.page, "snapshot"))
 		return ctx.cfg.cache_snapshot_ttl;

-	if (ctx.qry.has_sha1)
+	if (ctx.qry.has_oid)
 		return ctx.cfg.cache_static_ttl;

 	if (ctx.qry.has_symref)
@ -1037,7 +1051,7 @@ static int calc_ttl(void)
 	return ctx.cfg.cache_repo_ttl;
 }

-int main(int argc, const char **argv)
+int cmd_main(int argc, const char **argv)
 {
 	const char *path;
 	int err, ttl;
@ -1092,8 +1106,6 @@ int main(int argc, const char **argv)
 	else
 		ctx.page.expires += ttl * 60;
 	if (!ctx.env.authenticated || (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD")))
-		ctx.cfg.nocache = 1;
-	if (ctx.cfg.nocache)
 		ctx.cfg.cache_size = 0;
 	err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
 			    ctx.qry.raw, ttl, process_request);
--- a/cgit.css
+++ b/cgit.css
@ -18,7 +18,7 @@ div#cgit a:hover {
 }

 div#cgit table {
-      border-collapse: collapse;
+	border-collapse: collapse;
 }

 div#cgit table#header {
@ -85,6 +85,12 @@ div#cgit table.tabs td a.active {
 	background-color: #ccc;
 }

+div#cgit table.tabs a[href^="http://"]:after, div#cgit table.tabs a[href^="https://"]:after {
+	content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAQAAAAnOwc2AAAAAmJLR0QA/4ePzL8AAAAJcEhZcwAACxMAAAsTAQCanBgAAAAHdElNRQfgAhcJDQY+gm2TAAAAHWlUWHRDb21tZW50AAAAAABDcmVhdGVkIHdpdGggR0lNUGQuZQcAAABbSURBVAhbY2BABs4MU4CwhYHBh2Erww4wrGFQZHjI8B8IgUIscJWyDHcggltQhI4zGDCcRwhChPggHIggP1QoAVmQkSETrGoHsiAEsACtBYN0oDAMbgU6EBcAAL2eHUt4XUU4AAAAAElFTkSuQmCC);
+	opacity: 0.5;
+	margin: 0 0 0 5px;
+}
+
 div#cgit table.tabs td.form {
 	text-align: right;
 }
@ -128,14 +134,34 @@ div#cgit table.list tr.logheader {
 	background: #eee;
 }

+div#cgit table.list tr:nth-child(even) {
+	background: #f7f7f7;
+}
+
+div#cgit table.list tr:nth-child(odd) {
+	background: white;
+}
+
 div#cgit table.list tr:hover {
 	background: #eee;
 }

+div#cgit table.list tr.nohover {
+	background: white;
+}
+
 div#cgit table.list tr.nohover:hover {
 	background: white;
 }

+div#cgit table.list tr.nohover-highlight:hover:nth-child(even) {
+	background: #f7f7f7;
+}
+
+div#cgit table.list tr.nohover-highlight:hover:nth-child(odd) {
+	background: white;
+}
+
 div#cgit table.list th {
 	font-weight: bold;
 	/* color: #888;
@ -274,6 +300,7 @@ div#cgit table.blob {
 	border-top: solid 1px black;
 }

+div#cgit table.blob td.hashes,
 div#cgit table.blob td.lines {
 	margin: 0; padding: 0 0 0 0.5em;
 	vertical-align: top;
@ -303,6 +330,43 @@ div#cgit table.ssdiff td.lineno a:hover {
 	color: black;
 }

+div#cgit table.blame td.hashes,
+div#cgit table.blame td.lines,
+div#cgit table.blame td.linenumbers {
+	padding: 0;
+}
+
+div#cgit table.blame td.hashes div.alt,
+div#cgit table.blame td.lines div.alt {
+	padding: 0 0.5em 0 0.5em;
+}
+
+div#cgit table.blame td.linenumbers div.alt {
+	padding: 0 0.5em 0 0;
+}
+
+div#cgit table.blame div.alt:nth-child(even) {
+	background: #eee;
+}
+
+div#cgit table.blame div.alt:nth-child(odd) {
+	background: white;
+}
+
+div#cgit table.blame td.lines > div {
+	position: relative;
+}
+
+div#cgit table.blame td.lines > div > pre {
+	padding: 0 0 0 0.5em;
+	position: absolute;
+	top: 0;
+}
+
+div#cgit table.blame .oid {
+	font-size: 100%;
+}
+
 div#cgit table.bin-blob {
 	margin-top: 0.5em;
 	border: solid 1px black;
@ -501,7 +565,7 @@ div#cgit table.diff td div.del {
 	color: red;
 }

-div#cgit .sha1 {
+div#cgit .oid {
 	font-family: monospace;
 	font-size: 90%;
 }
@ -584,19 +648,31 @@ div#cgit span.age-months {
 div#cgit span.age-years {
 	color: #bbb;
 }
+
+div#cgit span.insertions {
+	color: #080;
+}
+
+div#cgit span.deletions {
+	color: #800;
+}
+
 div#cgit div.footer {
 	margin-top: 0.5em;
 	text-align: center;
 	font-size: 80%;
 	color: #ccc;
 }
+
 div#cgit div.footer a {
 	color: #ccc;
 	text-decoration: none;
 }
+
 div#cgit div.footer a:hover {
 	text-decoration: underline;
 }
+
 div#cgit a.branch-deco {
 	color: #000;
 	margin: 0px 0.5em;
@ -604,6 +680,7 @@ div#cgit a.branch-deco {
 	background-color: #88ff88;
 	border: solid 1px #007700;
 }
+
 div#cgit a.tag-deco {
 	color: #000;
 	margin: 0px 0.5em;
@ -611,6 +688,15 @@ div#cgit a.tag-deco {
 	background-color: #ffff88;
 	border: solid 1px #777700;
 }
+
+div#cgit a.tag-annotated-deco {
+	color: #000;
+	margin: 0px 0.5em;
+	padding: 0px 0.25em;
+	background-color: #ffcc88;
+	border: solid 1px #777700;
+}
+
 div#cgit a.remote-deco {
 	color: #000;
 	margin: 0px 0.5em;
@ -618,6 +704,7 @@ div#cgit a.remote-deco {
 	background-color: #ccccff;
 	border: solid 1px #000077;
 }
+
 div#cgit a.deco {
 	color: #000;
 	margin: 0px 0.5em;
@ -628,6 +715,7 @@ div#cgit a.deco {

 div#cgit div.commit-subject a.branch-deco,
 div#cgit div.commit-subject a.tag-deco,
+div#cgit div.commit-subject a.tag-annotated-deco,
 div#cgit div.commit-subject a.remote-deco,
 div#cgit div.commit-subject a.deco {
 	margin-left: 1em;
@ -797,9 +885,9 @@ div#cgit table.ssdiff td.head div.head {

 div#cgit table.ssdiff td.foot {
 	border-top: solid 1px #aaa;
-        border-left: none;
-        border-right: none;
-        border-bottom: none;
+	border-left: none;
+	border-right: none;
+	border-bottom: none;
 }

 div#cgit table.ssdiff td.space {
--- a/cgit.h
+++ b/cgit.h
@ -3,15 +3,18 @@


 #include <git-compat-util.h>
+#include <stdbool.h>
+
 #include <cache.h>
 #include <grep.h>
 #include <object.h>
+#include <object-store.h>
 #include <tree.h>
 #include <commit.h>
 #include <tag.h>
 #include <diff.h>
 #include <diffcore.h>
-#include <argv-array.h>
+#include <strvec.h>
 #include <refs.h>
 #include <revision.h>
 #include <log-tree.h>
@ -22,14 +25,11 @@
 #include <utf8.h>
 #include <notes.h>
 #include <graph.h>
+#include <inttypes.h>

-
-/*
- * Dateformats used on misc. pages
- */
-#define FMT_LONGDATE "%Y-%m-%d %H:%M:%S (%Z)"
-#define FMT_SHORTDATE "%Y-%m-%d"
-#define FMT_ATOMDATE "%Y-%m-%dT%H:%M:%SZ"
+/* Add isgraph(x) to Git's sane ctype support (see git-compat-util.h) */
+#undef isgraph
+#define isgraph(x) (isprint((x)) && !isspace((x)))


 /*
@ -48,6 +48,8 @@
 */
 #define PAGE_ENCODING "UTF-8"

+#define BIT(x)	(1U << (x))
+
 typedef void (*configfn)(const char *name, const char *value);
 typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
@ -73,7 +75,6 @@ struct cgit_exec_filter {
 	char *cmd;
 	char **argv;
 	int old_stdout;
-	int pipe_fh[2];
 	int pid;
 };

@ -82,7 +83,9 @@ struct cgit_repo {
 	char *name;
 	char *path;
 	char *desc;
+	char *extra_head_content;
 	char *owner;
+	char *homepage;
 	char *defbranch;
 	char *module_link;
 	struct string_list readme;
@ -90,12 +93,15 @@ struct cgit_repo {
 	char *clone_url;
 	char *logo;
 	char *logo_link;
+	char *snapshot_prefix;
 	int snapshots;
+	int enable_blame;
 	int enable_commit_graph;
 	int enable_log_filecount;
 	int enable_log_linecount;
 	int enable_remote_branches;
 	int enable_subject_links;
+	int enable_html_serving;
 	int max_stats;
 	int branch_sort;
 	int commit_sort;
@ -124,9 +130,11 @@ struct commitinfo {
 	char *author;
 	char *author_email;
 	unsigned long author_date;
+	int author_tz;
 	char *committer;
 	char *committer_email;
 	unsigned long committer_date;
+	int committer_tz;
 	char *subject;
 	char *msg;
 	char *msg_encoding;
@ -136,6 +144,7 @@ struct taginfo {
 	char *tagger;
 	char *tagger_email;
 	unsigned long tagger_date;
+	int tagger_tz;
 	char *msg;
 };

@ -156,7 +165,7 @@ struct reflist {

 struct cgit_query {
 	int has_symref;
-	int has_sha1;
+	int has_oid;
 	int has_difftype;
 	char *raw;
 	char *repo;
@ -164,11 +173,10 @@ struct cgit_query {
 	char *search;
 	char *grep;
 	char *head;
-	char *sha1;
-	char *sha2;
+	char *oid;
+	char *oid2;
 	char *path;
 	char *name;
-	char *mimetype;
 	char *url;
 	char *period;
 	int   ofs;
@ -179,6 +187,7 @@ struct cgit_query {
 	int show_all;
 	int context;
 	int ignorews;
+	int follow;
 	char *vpath;
 };

@ -187,19 +196,17 @@ struct cgit_config {
 	char *cache_root;
 	char *clone_prefix;
 	char *clone_url;
-	char *css;
 	char *favicon;
 	char *footer;
 	char *head_include;
 	char *header;
-	char *index_header;
-	char *index_info;
 	char *logo;
 	char *logo_link;
 	char *mimetype_file;
 	char *module_link;
 	char *project_list;
 	struct string_list readme;
+	struct string_list css;
 	char *robots;
 	char *root_title;
 	char *root_desc;
@ -221,14 +228,17 @@ struct cgit_config {
 	int case_sensitive_sort;
 	int embedded;
 	int enable_filter_overrides;
+	int enable_follow_links;
 	int enable_http_clone;
 	int enable_index_links;
 	int enable_index_owner;
+	int enable_blame;
 	int enable_commit_graph;
 	int enable_log_filecount;
 	int enable_log_linecount;
 	int enable_remote_branches;
 	int enable_subject_links;
+	int enable_html_serving;
 	int enable_tree_linenumbers;
 	int enable_git_config;
 	int local_time;
@ -240,7 +250,6 @@ struct cgit_config {
 	int max_repodesc_len;
 	int max_blob_size;
 	int max_stats;
-	int nocache;
 	int noplainemail;
 	int noheader;
 	int renamelimit;
@ -256,6 +265,7 @@ struct cgit_config {
 	int branch_sort;
 	int commit_sort;
 	struct string_list mimetypes;
+	struct string_list js;
 	struct cgit_filter *about_filter;
 	struct cgit_filter *commit_filter;
 	struct cgit_filter *source_filter;
@ -308,7 +318,6 @@ struct cgit_snapshot_format {
 	const char *suffix;
 	const char *mimetype;
 	write_archive_fn_t write_func;
-	int bit;
 };

 extern const char *cgit_version;
@ -328,26 +337,28 @@ extern int chk_non_negative(int result, char *msg);

 extern char *trim_end(const char *str, char c);
 extern char *ensure_end(const char *str, char c);
-extern char *strlpart(char *txt, int maxlen);
-extern char *strrpart(char *txt, int maxlen);

 extern void strbuf_ensure_end(struct strbuf *sb, char c);

 extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
 extern void cgit_free_reflist_inner(struct reflist *list);
-extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
+extern int cgit_refs_cb(const char *refname, const struct object_id *oid,
 			int flags, void *cb_data);

-extern void *cgit_free_commitinfo(struct commitinfo *info);
+extern void cgit_free_commitinfo(struct commitinfo *info);
+extern void cgit_free_taginfo(struct taginfo *info);
+
+void cgit_diff_tree_cb(struct diff_queue_struct *q,
+		       struct diff_options *options, void *data);

-extern int cgit_diff_files(const unsigned char *old_sha1,
-			   const unsigned char *new_sha1,
+extern int cgit_diff_files(const struct object_id *old_oid,
+			   const struct object_id *new_oid,
 			   unsigned long *old_size, unsigned long *new_size,
 			   int *binary, int context, int ignorews,
 			   linediff_fn fn);

-extern void cgit_diff_tree(const unsigned char *old_sha1,
-			   const unsigned char *new_sha1,
+extern void cgit_diff_tree(const struct object_id *old_oid,
+			   const struct object_id *new_oid,
 			   filepair_fn fn, const char *prefix, int ignorews);

 extern void cgit_diff_commit(struct commit *commit, filepair_fn fn,
@ -366,6 +377,9 @@ extern void cgit_parse_url(const char *url);
 extern const char *cgit_repobasename(const char *reponame);

 extern int cgit_parse_snapshots_mask(const char *str);
+extern const struct object_id *cgit_snapshot_get_sig(const char *ref,
+						     const struct cgit_snapshot_format *f);
+extern const unsigned cgit_snapshot_format_bit(const struct cgit_snapshot_format *f);

 extern int cgit_open_filter(struct cgit_filter *filter, ...);
 extern int cgit_close_filter(struct cgit_filter *filter);
@ -381,4 +395,6 @@ extern int readfile(const char *path, char **buf, size_t *size);

 extern char *expand_macros(const char *txt);

+extern char *get_mimetype_for_filename(const char *filename);
+
 #endif /* CGIT_H */
--- a/cgit.js
+++ b/cgit.js
@ -0,0 +1,68 @@
+/* cgit.js: javacript functions for cgit
+ *
+ * Copyright (C) 2006-2018 cgit Development Team <cgit@lists.zx2c4.com>
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+(function () {
+
+/* This follows the logic and suffixes used in ui-shared.c */
+
+var age_classes = [ "age-mins", "age-hours", "age-days",    "age-weeks",    "age-months",    "age-years" ];
+var age_suffix =  [ "min.",     "hours",     "days",        "weeks",        "months",        "years",         "years" ];
+var age_next =    [ 60,         3600,        24 * 3600,     7 * 24 * 3600,  30 * 24 * 3600,  365 * 24 * 3600, 365 * 24 * 3600 ];
+var age_limit =   [ 7200,       24 * 7200,   7 * 24 * 7200, 30 * 24 * 7200, 365 * 25 * 7200, 365 * 25 * 7200 ];
+var update_next = [ 10,         5 * 60,      1800,          24 * 3600,      24 * 3600,       24 * 3600,       24 * 3600 ];
+
+function render_age(e, age) {
+	var t, n;
+
+	for (n = 0; n < age_classes.length; n++)
+		if (age < age_limit[n])
+			break;
+
+	t = Math.round(age / age_next[n]) + " " + age_suffix[n];
+
+	if (e.textContent != t) {
+		e.textContent = t;
+		if (n == age_classes.length)
+			n--;
+		if (e.className != age_classes[n])
+			e.className = age_classes[n];
+	}
+}
+
+function aging() {
+	var n, next = 24 * 3600,
+	    now_ut = Math.round((new Date().getTime() / 1000));
+
+	for (n = 0; n < age_classes.length; n++) {
+		var m, elems = document.getElementsByClassName(age_classes[n]);
+
+		if (elems.length && update_next[n] < next)
+			next = update_next[n];
+
+		for (m = 0; m < elems.length; m++) {
+			var age = now_ut - elems[m].getAttribute("data-ut");
+
+			render_age(elems[m], age);
+		}
+	}
+
+	/*
+	 * We only need to come back when the age might have changed.
+	 * Eg, if everything is counted in hours already, once per
+	 * 5 minutes is accurate enough.
+	 */
+
+	window.setTimeout(aging, next * 1000);
+}
+
+document.addEventListener("DOMContentLoaded", function() {
+	/* we can do the aging on DOM content load since no layout dependency */
+	aging();
+}, false);
+
+})();
--- a/cgit.mk
+++ b/cgit.mk
@ -21,6 +21,8 @@ CGIT_CFLAGS += -DCGIT_CONFIG='"$(CGIT_CONFIG)"'
 CGIT_CFLAGS += -DCGIT_SCRIPT_NAME='"$(CGIT_SCRIPT_NAME)"'
 CGIT_CFLAGS += -DCGIT_CACHE_ROOT='"$(CACHE_ROOT)"'

+PKG_CONFIG ?= pkg-config
+
 ifdef NO_C99_FORMAT
 	CFLAGS += -DNO_C99_FORMAT
 endif
@ -31,7 +33,7 @@ ifdef NO_LUA
 else
 ifeq ($(LUA_PKGCONFIG),)
 	LUA_PKGCONFIG := $(shell for pc in luajit lua lua5.2 lua5.1; do \
-			pkg-config --exists $$pc 2>/dev/null && echo $$pc && break; \
+			$(PKG_CONFIG) --exists $$pc 2>/dev/null && echo $$pc && break; \
 			done)
 	LUA_MODE := autodetected
 else
@ -39,8 +41,8 @@ else
 endif
 ifneq ($(LUA_PKGCONFIG),)
 	LUA_MESSAGE := linking with $(LUA_MODE) $(LUA_PKGCONFIG)
-	LUA_LIBS := $(shell pkg-config --libs $(LUA_PKGCONFIG) 2>/dev/null)
-	LUA_CFLAGS := $(shell pkg-config --cflags $(LUA_PKGCONFIG) 2>/dev/null)
+	LUA_LIBS := $(shell $(PKG_CONFIG) --libs $(LUA_PKGCONFIG) 2>/dev/null)
+	LUA_CFLAGS := $(shell $(PKG_CONFIG) --cflags $(LUA_PKGCONFIG) 2>/dev/null)
 	CGIT_LIBS += $(LUA_LIBS)
 	CGIT_CFLAGS += $(LUA_CFLAGS)
 else
@ -51,8 +53,8 @@ endif

 endif

-# Add -ldl to linker flags on non-BSD systems.
-ifeq ($(findstring BSD,$(uname_S)),)
+# Add -ldl to linker flags on systems that commonly use GNU libc.
+ifneq (,$(filter $(uname_S),Linux GNU GNU/kFreeBSD))
 	CGIT_LIBS += -ldl
 endif

@ -75,6 +77,7 @@ CGIT_OBJ_NAMES += parsing.o
 CGIT_OBJ_NAMES += scan-tree.o
 CGIT_OBJ_NAMES += shared.o
 CGIT_OBJ_NAMES += ui-atom.o
+CGIT_OBJ_NAMES += ui-blame.o
 CGIT_OBJ_NAMES += ui-blob.o
 CGIT_OBJ_NAMES += ui-clone.o
 CGIT_OBJ_NAMES += ui-commit.o
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@ -54,14 +54,10 @@ branch-sort::
 	list, and when set to "name" enables ordering by branch name. Default
 	value: "name".

-cache-root::
-	Path used to store the cgit cache entries. Default value:
-	"/var/cache/cgit". See also: "MACRO EXPANSION".
-
-cache-static-ttl::
+cache-about-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
-	version of repository pages accessed with a fixed SHA1. See also:
-	"CACHE". Default value: -1".
+	version of the repository about page. See also: "CACHE". Default
+	value: "15".

 cache-dynamic-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
@ -73,6 +69,10 @@ cache-repo-ttl::
 	version of the repository summary page. See also: "CACHE". Default
 	value: "5".

+cache-root::
+	Path used to store the cgit cache entries. Default value:
+	"/var/cache/cgit". See also: "MACRO EXPANSION".
+
 cache-root-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
 	version of the repository index page. See also: "CACHE". Default
@ -83,22 +83,22 @@ cache-scanrc-ttl::
 	of scanning a path for git repositories. See also: "CACHE". Default
 	value: "15".

-cache-about-ttl::
-	Number which specifies the time-to-live, in minutes, for the cached
-	version of the repository about page. See also: "CACHE". Default
-	value: "15".
-
-cache-snapshot-ttl::
-	Number which specifies the time-to-live, in minutes, for the cached
-	version of snapshots. See also: "CACHE". Default value: "5".
+case-sensitive-sort::
+	Sort items in the repo list case sensitively. Default value: "1".
+	See also: repository-sort, section-sort.

 cache-size::
 	The maximum number of entries in the cgit cache. When set to "0",
 	caching is disabled. See also: "CACHE". Default value: "0"

-case-sensitive-sort::
-	Sort items in the repo list case sensitively. Default value: "1".
-	See also: repository-sort, section-sort.
+cache-snapshot-ttl::
+	Number which specifies the time-to-live, in minutes, for the cached
+	version of snapshots. See also: "CACHE". Default value: "5".
+
+cache-static-ttl::
+	Number which specifies the time-to-live, in minutes, for the cached
+	version of repository pages accessed with a fixed SHA1. See also:
+	"CACHE". Default value: -1".

 clone-prefix::
 	Space-separated list of common prefixes which, when combined with a
@ -126,7 +126,8 @@ commit-sort::

 css::
 	Url which specifies the css document to include in all cgit pages.
-	Default value: "/cgit.css".
+	Default value: "/cgit.css".  May be given multiple times, each
+	css URL path is added in the head section of the document in turn.

 email-filter::
 	Specifies a command which will be invoked to format names and email
@ -141,6 +142,11 @@ embedded::
 	suitable for embedding in other html pages. Default value: none. See
 	also: "noheader".

+enable-blame::
+	Flag which, when set to "1", will allow cgit to provide a "blame" page
+	for files, and will make it generate links to that page in appropriate
+	places. Default value: "0".
+
 enable-commit-graph::
 	Flag which, when set to "1", will make cgit print an ASCII-art commit
 	history graph to the left of the commit messages in the repository
@ -150,12 +156,33 @@ enable-filter-overrides::
 	Flag which, when set to "1", allows all filter settings to be
 	overridden in repository-specific cgitrc files. Default value: none.

+enable-follow-links::
+	Flag which, when set to "1", allows users to follow a file in the log
+	view.  Default value: "0".
+
+enable-git-config::
+	Flag which, when set to "1", will allow cgit to use git config to set
+	any repo specific settings. This option is used in conjunction with
+	"scan-path", and must be defined prior, to augment repo-specific
+	settings. The keys gitweb.owner, gitweb.category, gitweb.description,
+	and gitweb.homepage will map to the cgit keys repo.owner, repo.section,
+	repo.desc, and repo.homepage respectively. All git config keys that begin
+	with "cgit." will be mapped to the corresponding "repo." key in cgit.
+	Default value: "0". See also: scan-path, section-from-path.
+
 enable-http-clone::
-	If set to "1", cgit will act as an dumb HTTP endpoint for git clones.
+	If set to "1", cgit will act as a dumb HTTP endpoint for git clones.
 	You can add "http://$HTTP_HOST$SCRIPT_NAME/$CGIT_REPO_URL" to clone-url
 	to expose this feature. If you use an alternate way of serving git
 	repositories, you may wish to disable this. Default value: "1".

+enable-html-serving::
+	Flag which, when set to "1", will allow the /plain handler to serve
+	mimetype headers that result in the file being treated as HTML by the
+	browser. When set to "0", such file types are returned instead as
+	text/plain or application/octet-stream. Default value: "0". See also:
+	"repo.enable-html-serving".
+
 enable-index-links::
 	Flag which, when set to "1", will make cgit generate extra links for
 	each repo in the repository index (specifically, to the "summary",
@ -190,16 +217,6 @@ enable-tree-linenumbers::
 	Flag which, when set to "1", will make cgit generate linenumber links
 	for plaintext blobs printed in the tree view. Default value: "1".

-enable-git-config::
-	Flag which, when set to "1", will allow cgit to use git config to set
-	any repo specific settings. This option is used in conjunction with
-	"scan-path", and must be defined prior, to augment repo-specific
-	settings. The keys gitweb.owner, gitweb.category, and gitweb.description
-	will map to the cgit keys repo.owner, repo.section, and repo.desc,
-	respectively. All git config keys that begin with "cgit." will be mapped
-	to the corresponding "repo." key in cgit. Default value: "0". See also:
-	scan-path, section-from-path.
-
 favicon::
 	Url used as link to a shortcut icon for cgit. It is suggested to use
 	the value "/favicon.ico" since certain browsers will ignore other
@ -222,17 +239,10 @@ include::
 	Name of a configfile to include before the rest of the current config-
 	file is parsed. Default value: none. See also: "MACRO EXPANSION".

-index-header::
-	The content of the file specified with this option will be included
-	verbatim above the repository index. This setting is deprecated, and
-	will not be supported by cgit-1.0 (use root-readme instead). Default
-	value: none.
-
-index-info::
-	The content of the file specified with this option will be included
-	verbatim below the heading on the repository index page. This setting
-	is deprecated, and will not be supported by cgit-1.0 (use root-desc
-	instead). Default value: none.
+js::
+	Url which specifies the javascript script document to include in all cgit
+	pages.  Default value: "/cgit.js".  Setting this to an empty string will
+	disable generation of the link to this file in the head section.

 local-time::
 	Flag which, if set to "1", makes cgit print commit and tag times in the
@ -247,19 +257,14 @@ logo-link::
 	calculated url of the repository index page will be used. Default
 	value: none.

-owner-filter::
-	Specifies a command which will be invoked to format the Owner
-	column of the main page.  The command will get the owner on STDIN,
-	and the STDOUT from the command will be included verbatim in the
-	table.  This can be used to link to additional context such as an
-	owners home page.  When active this filter is used instead of the
-	default owner query url.  Default value: none.
-	See also: "FILTER API".
-
 max-atom-items::
 	Specifies the number of items to display in atom feeds view. Default
 	value: "10".

+max-blob-size::
+	Specifies the maximum size of a blob to display HTML for in KBytes.
+	Default value: "0" (limit disabled).
+
 max-commit-count::
 	Specifies the number of entries to list per page in "log" view. Default
 	value: "50".
@ -270,16 +275,13 @@ max-message-length::

 max-repo-count::
 	Specifies the number of entries to list per page on the	repository
-	index page. Default value: "50".
+	index page. The value "0" shows all repositories without limitation.
+	Default value: "50".

 max-repodesc-length::
 	Specifies the maximum number of repo description characters to display
 	on the repository index page. Default value: "80".

-max-blob-size::
-	Specifies the maximum size of a blob to display HTML for in KBytes.
-	Default value: "0" (limit disabled).
-
 max-stats::
 	Set the default maximum statistics period. Valid values are "week",
 	"month", "quarter" and "year". If unspecified, statistics are
@ -307,11 +309,6 @@ module-link::
 	formatstring are the path and SHA1 of the submodule commit. Default
 	value: none.

-nocache::
-	If set to the value "1" caching will be disabled. This settings is
-	deprecated, and will not be honored starting with cgit-1.0. Default
-	value: "0".
-
 noplainemail::
 	If set to "1" showing full author email addresses will be disabled.
 	Default value: "0".
@ -320,6 +317,15 @@ noheader::
 	Flag which, when set to "1", will make cgit omit the standard header
 	on all pages. Default value: none. See also: "embedded".

+owner-filter::
+	Specifies a command which will be invoked to format the Owner
+	column of the main page.  The command will get the owner on STDIN,
+	and the STDOUT from the command will be included verbatim in the
+	table.  This can be used to link to additional context such as an
+	owners home page.  When active this filter is used instead of the
+	default owner query url.  Default value: none.
+	See also: "FILTER API".
+
 project-list::
 	A list of subdirectories inside of scan-path, relative to it, that
 	should loaded as git repositories. This must be defined prior to
@ -343,10 +349,6 @@ renamelimit::
 	 "-1" uses the compiletime value in git (for further info, look at
 	  `man git-diff`). Default value: "-1".

-repo.group::
-	Legacy alias for "section". This option is deprecated and will not be
-	supported in cgit-1.0.
-
 repository-sort::
 	The way in which repositories in each section are sorted. Valid values
 	are "name" for sorting by the repo name or "age" for sorting by the
@ -412,8 +414,12 @@ side-by-side-diffs::
 snapshots::
 	Text which specifies the default set of snapshot formats that cgit
 	generates links for. The value is a space-separated list of zero or
-	more of the values "tar", "tar.gz", "tar.bz2", "tar.xz" and "zip".
-	Default value: none.
+	more of the values "tar", "tar.gz", "tar.bz2", "tar.lz", "tar.xz",
+	"tar.zst" and "zip". The special value "all" enables all snapshot
+	formats. Default value: none.
+	All compressors use default settings. Some settings can be influenced
+	with environment variables, for example set ZSTD_CLEVEL=10 in web
+	server environment for higher (but slower) zstd compression.

 source-filter::
 	Specifies a command which will be invoked to format plaintext blobs
@ -489,10 +495,18 @@ repo.email-filter::
 	Override the default email-filter. Default value: none. See also:
 	"enable-filter-overrides". See also: "FILTER API".

+repo.enable-blame::
+	A flag which can be used to disable the global setting
+	`enable-blame'. Default value: none.
+
 repo.enable-commit-graph::
 	A flag which can be used to disable the global setting
 	`enable-commit-graph'. Default value: none.

+repo.enable-html-serving::
+	A flag which can be used to override the global setting
+	`enable-html-serving`. Default value: none.
+
 repo.enable-log-filecount::
 	A flag which can be used to disable the global setting
 	`enable-log-filecount'. Default value: none.
@ -509,11 +523,18 @@ repo.enable-subject-links::
 	A flag which can be used to override the global setting
 	`enable-subject-links'. Default value: none.

+repo.extra-head-content::
+	This value will be added verbatim to the head section of each page
+	displayed for this repo. Default value: none.
+
 repo.hide::
 	Flag which, when set to "1", hides the repository from the repository
 	index. The repository can still be accessed by providing a direct path.
 	Default value: "0". See also: "repo.ignore".

+repo.homepage::
+	The value to show as repository homepage. Default value: none.
+
 repo.ignore::
 	Flag which, when set to "1", ignores the repository. The repository
 	is not shown in the index and cannot be accessed by providing a direct
@ -528,10 +549,6 @@ repo.logo-link::
 	calculated url of the repository index page will be used. Default
 	value: global logo-link.

-repo.owner-filter::
-	Override the default owner-filter. Default value: none. See also:
-	"enable-filter-overrides". See also: "FILTER API".
-
 repo.module-link::
 	Text which will be used as the formatstring for a hyperlink when a
 	submodule is printed in a directory listing. The arguments for the
@ -556,6 +573,10 @@ repo.owner::
 	A value used to identify the owner of the repository. Default value:
 	none.

+repo.owner-filter::
+	Override the default owner-filter. Default value: none. See also:
+	"enable-filter-overrides". See also: "FILTER API".
+
 repo.path::
 	An absolute path to the repository directory. For non-bare repositories
 	this is the .git-directory. Default value: none.
@ -565,20 +586,27 @@ repo.readme::
 	verbatim as the "About" page for this repo. You may also specify a
 	git refspec by head or by hash by prepending the refspec followed by
 	a colon. For example, "master:docs/readme.mkd". If the value begins
-	with a colon, i.e. ":docs/readme.rst", the default branch of the
-	repository will be used. Sharing any file will expose that entire
-	directory tree to the "/about/PATH" endpoints, so be sure that there
-	are no non-public files located in the same directory as the readme
-	file. Default value: <readme>.
+	with a colon, i.e. ":docs/readme.rst", the head giving in query or
+	the default branch of the repository will be used. Sharing any file
+	will expose that entire directory tree to the "/about/PATH" endpoints,
+	so be sure that there are no non-public files located in the same
+	directory as the readme file. Default value: <readme>.
+
+repo.section::
+	Override the current section name for this repository. Default value:
+	none.

 repo.snapshots::
 	A mask of snapshot formats for this repo that cgit generates links for,
 	restricted by the global "snapshots" setting. Default value:
 	<snapshots>.

-repo.section::
-	Override the current section name for this repository. Default value:
-	none.
+repo.snapshot-prefix::
+	Prefix to use for snapshot links instead of the repository basename.
+	For example, the "linux-stable" repository may wish to set this to
+	"linux" so that snapshots are in the format "linux-3.15.4" instead
+	of "linux-stable-3.15.4".  Default value: <empty> meaning to use
+	the repository basename.

 repo.source-filter::
 	Override the default source-filter. Default value: none. See also:
@ -652,30 +680,6 @@ about filter::
 	The about text that is to be filtered is available on standard input
 	and the filtered text is expected on standard output.

-commit filter::
-	This filter is given no arguments. The commit message text that is to
-	be filtered is available on standard input and the filtered text is
-	expected on standard output.
-
-email filter::
-	This filter is given two parameters: the email address of the relevent
-	author and a string indicating the originating page. The filter will
-	then receive the text string to format on standard input and is
-	expected to write to standard output the formatted text to be included
-	in the page.
-
-owner filter::
-	This filter is given no arguments.  The owner text is avilable on
-	standard input and the filter is expected to write to standard
-	output.  The output is included in the Owner column.
-
-source filter::
-	This filter is given a single parameter: the filename of the source
-	file to filter. The filter can use the filename to determine (for
-	example) the syntax highlighting mode. The contents of the source
-	file that is to be filtered is available on standard input and the
-	filtered contents is expected on standard output.
-
 auth filter::
 	The authentication filter receives 12 parameters:
 	  - filter action, explained below, which specifies which action the
@ -702,6 +706,30 @@ auth filter::
 	Please see `filters/simple-authentication.lua` for a clear example
 	script that may be modified.

+commit filter::
+	This filter is given no arguments. The commit message text that is to
+	be filtered is available on standard input and the filtered text is
+	expected on standard output.
+
+email filter::
+	This filter is given two parameters: the email address of the relevant
+	author and a string indicating the originating page. The filter will
+	then receive the text string to format on standard input and is
+	expected to write to standard output the formatted text to be included
+	in the page.
+
+owner filter::
+	This filter is given no arguments.  The owner text is available on
+	standard input and the filter is expected to write to standard
+	output.  The output is included in the Owner column.
+
+source filter::
+	This filter is given a single parameter: the filename of the source
+	file to filter. The filter can use the filename to determine (for
+	example) the syntax highlighting mode. The contents of the source
+	file that is to be filtered is available on standard input and the
+	filtered contents is expected on standard output.
+

 All filters are handed the following environment variables:

@ -745,7 +773,7 @@ the environment variables defined in "FILTER API":


 CACHE
------
+-----

 All cache ttl values are in minutes. Negative ttl values indicate that a page
 type will never expire, and thus the first time a URL is accessed, the result
@ -753,6 +781,33 @@ will be cached indefinitely, even if the underlying git repository changes.
 Conversely, when a ttl value is zero, the cache is disabled for that
 particular page type, and the page type is never cached.

+SIGNATURES
+----------
+
+Cgit can host .asc signatures corresponding to various snapshot formats,
+through use of git notes. For example, the following command may be used to
+add a signature to a .tar.xz archive:
+
+    git notes --ref=refs/notes/signatures/tar.xz add -C "$(
+	gpg --output - --armor --detach-sign cgit-1.1.tar.xz |
+	git hash-object -w --stdin
+    )" v1.1
+
+If it is instead desirable to attach a signature of the underlying .tar, this
+will be linked, as a special case, beside a .tar.* link that does not have its
+own signature. For example, a signature of a tarball of the latest tag might
+be added with a similar command:
+
+    tag="$(git describe --abbrev=0)"
+    git notes --ref=refs/notes/signatures/tar add -C "$(
+        git archive --format tar --prefix "cgit-${tag#v}/" "$tag" |
+        gpg --output - --armor --detach-sign |
+        git hash-object -w --stdin
+    )" "$tag"
+
+Since git-archive(1) is expected to produce stable output between versions,
+this allows one to generate a long-term signature of the contents of a given
+tag.

 EXAMPLE CGITRC FILE
 -------------------
@ -781,6 +836,10 @@ enable-http-clone=1
 enable-index-links=1


+# Enable blame page and create links to it from tree page
+enable-blame=1
+
+
 # Enable ASCII art commit history graph on the log pages
 enable-commit-graph=1

--- a/cmd.c
+++ b/cmd.c
@ -1,6 +1,6 @@
 /* cmd.c: the cgit command dispatcher
 *
- * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
+ * Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
@ -11,6 +11,7 @@
 #include "cache.h"
 #include "ui-shared.h"
 #include "ui-atom.h"
+#include "ui-blame.h"
 #include "ui-blob.h"
 #include "ui-clone.h"
 #include "ui-commit.h"
@ -38,30 +39,57 @@ static void atom_fn(void)

 static void about_fn(void)
 {
-	if (ctx.repo)
-		cgit_print_repo_readme(ctx.qry.path);
-	else
+	if (ctx.repo) {
+		size_t path_info_len = ctx.env.path_info ? strlen(ctx.env.path_info) : 0;
+		if (!ctx.qry.path &&
+		    ctx.qry.url[strlen(ctx.qry.url) - 1] != '/' &&
+		    (!path_info_len || ctx.env.path_info[path_info_len - 1] != '/')) {
+			char *currenturl = cgit_currenturl();
+			char *redirect = fmtalloc("%s/", currenturl);
+			cgit_redirect(redirect, true);
+			free(currenturl);
+			free(redirect);
+		} else if (ctx.repo->readme.nr)
+			cgit_print_repo_readme(ctx.qry.path);
+		else if (ctx.repo->homepage)
+			cgit_redirect(ctx.repo->homepage, false);
+		else {
+			char *currenturl = cgit_currenturl();
+			char *redirect = fmtalloc("%s../", currenturl);
+			cgit_redirect(redirect, false);
+			free(currenturl);
+			free(redirect);
+		}
+	} else
 		cgit_print_site_readme();
 }

+static void blame_fn(void)
+{
+	if (ctx.repo->enable_blame)
+		cgit_print_blame();
+	else
+		cgit_print_error_page(403, "Forbidden", "Blame is disabled");
+}
+
 static void blob_fn(void)
 {
-	cgit_print_blob(ctx.qry.sha1, ctx.qry.path, ctx.qry.head, 0);
+	cgit_print_blob(ctx.qry.oid, ctx.qry.path, ctx.qry.head, 0);
 }

 static void commit_fn(void)
 {
-	cgit_print_commit(ctx.qry.sha1, ctx.qry.path);
+	cgit_print_commit(ctx.qry.oid, ctx.qry.path);
 }

 static void diff_fn(void)
 {
-	cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1, 0);
+	cgit_print_diff(ctx.qry.oid, ctx.qry.oid2, ctx.qry.path, 1, 0);
 }

 static void rawdiff_fn(void)
 {
-	cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1, 1);
+	cgit_print_diff(ctx.qry.oid, ctx.qry.oid2, ctx.qry.path, 1, 1);
 }

 static void info_fn(void)
@ -71,7 +99,7 @@ static void info_fn(void)

 static void log_fn(void)
 {
-	cgit_print_log(ctx.qry.sha1, ctx.qry.ofs, ctx.cfg.max_commit_count,
+	cgit_print_log(ctx.qry.oid, ctx.qry.ofs, ctx.cfg.max_commit_count,
 		       ctx.qry.grep, ctx.qry.search, ctx.qry.path, 1,
 		       ctx.repo->enable_commit_graph,
 		       ctx.repo->commit_sort);
@ -97,7 +125,7 @@ static void repolist_fn(void)

 static void patch_fn(void)
 {
-	cgit_print_patch(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path);
+	cgit_print_patch(ctx.qry.oid, ctx.qry.oid2, ctx.qry.path);
 }

 static void plain_fn(void)
@ -112,7 +140,7 @@ static void refs_fn(void)

 static void snapshot_fn(void)
 {
-	cgit_print_snapshot(ctx.qry.head, ctx.qry.sha1, ctx.qry.path,
+	cgit_print_snapshot(ctx.qry.head, ctx.qry.oid, ctx.qry.path,
 			    ctx.qry.nohead);
 }

@ -128,40 +156,41 @@ static void summary_fn(void)

 static void tag_fn(void)
 {
-	cgit_print_tag(ctx.qry.sha1);
+	cgit_print_tag(ctx.qry.oid);
 }

 static void tree_fn(void)
 {
-	cgit_print_tree(ctx.qry.sha1, ctx.qry.path);
+	cgit_print_tree(ctx.qry.oid, ctx.qry.path);
 }

-#define def_cmd(name, want_repo, want_layout, want_vpath, is_clone) \
-	{#name, name##_fn, want_repo, want_layout, want_vpath, is_clone}
+#define def_cmd(name, want_repo, want_vpath, is_clone) \
+	{#name, name##_fn, want_repo, want_vpath, is_clone}

 struct cgit_cmd *cgit_get_cmd(void)
 {
 	static struct cgit_cmd cmds[] = {
-		def_cmd(HEAD, 1, 0, 0, 1),
-		def_cmd(atom, 1, 0, 0, 0),
-		def_cmd(about, 0, 1, 0, 0),
-		def_cmd(blob, 1, 0, 0, 0),
-		def_cmd(commit, 1, 1, 1, 0),
-		def_cmd(diff, 1, 1, 1, 0),
-		def_cmd(info, 1, 0, 0, 1),
-		def_cmd(log, 1, 1, 1, 0),
-		def_cmd(ls_cache, 0, 0, 0, 0),
-		def_cmd(objects, 1, 0, 0, 1),
-		def_cmd(patch, 1, 0, 1, 0),
-		def_cmd(plain, 1, 0, 0, 0),
-		def_cmd(rawdiff, 1, 0, 1, 0),
-		def_cmd(refs, 1, 1, 0, 0),
-		def_cmd(repolist, 0, 0, 0, 0),
-		def_cmd(snapshot, 1, 0, 0, 0),
-		def_cmd(stats, 1, 1, 1, 0),
-		def_cmd(summary, 1, 1, 0, 0),
-		def_cmd(tag, 1, 1, 0, 0),
-		def_cmd(tree, 1, 1, 1, 0),
+		def_cmd(HEAD, 1, 0, 1),
+		def_cmd(atom, 1, 0, 0),
+		def_cmd(about, 0, 0, 0),
+		def_cmd(blame, 1, 1, 0),
+		def_cmd(blob, 1, 0, 0),
+		def_cmd(commit, 1, 1, 0),
+		def_cmd(diff, 1, 1, 0),
+		def_cmd(info, 1, 0, 1),
+		def_cmd(log, 1, 1, 0),
+		def_cmd(ls_cache, 0, 0, 0),
+		def_cmd(objects, 1, 0, 1),
+		def_cmd(patch, 1, 1, 0),
+		def_cmd(plain, 1, 0, 0),
+		def_cmd(rawdiff, 1, 1, 0),
+		def_cmd(refs, 1, 0, 0),
+		def_cmd(repolist, 0, 0, 0),
+		def_cmd(snapshot, 1, 0, 0),
+		def_cmd(stats, 1, 1, 0),
+		def_cmd(summary, 1, 0, 0),
+		def_cmd(tag, 1, 0, 0),
+		def_cmd(tree, 1, 1, 0),
 	};
 	int i;

--- a/cmd.h
+++ b/cmd.h
@ -7,7 +7,6 @@ struct cgit_cmd {
 	const char *name;
 	cgit_cmd_fn fn;
 	unsigned int want_repo:1,
-		want_layout:1,
 		want_vpath:1,
 		is_clone:1;
 };
--- a/configfile.c
+++ b/configfile.c
@ -6,8 +6,7 @@
 *   (see COPYING for full license text)
 */

-#include <ctype.h>
-#include <stdio.h>
+#include <git-compat-util.h>
 #include "configfile.h"

 static int next_char(FILE *f)
@ -40,7 +39,9 @@ static int read_config_line(FILE *f, struct strbuf *name, struct strbuf *value)

 	/* Skip comments and preceding spaces. */
 	for(;;) {
-		if (c == '#' || c == ';')
+		if (c == EOF)
+			return 0;
+		else if (c == '#' || c == ';')
 			skip_line(f);
 		else if (!isspace(c))
 			break;
--- a/contrib/hooks/post-receive.agefile
+++ b/contrib/hooks/post-receive.agefile
@ -0,0 +1,19 @@
+#!/bin/sh
+#
+# An example hook to update the "agefile" for CGit's idle time calculation.
+#
+# This hook assumes that you are using the default agefile location of
+# "info/web/last-modified".  If you change the value in your cgitrc then you
+# must also change it here.
+#
+# To install the hook, copy (or link) it to the file "hooks/post-receive" in
+# each of your repositories.
+#
+
+agefile="$(git rev-parse --git-dir)"/info/web/last-modified
+
+mkdir -p "$(dirname "$agefile")" &&
+git for-each-ref \
+	--sort=-authordate --count=1 \
+	--format='%(authordate:iso8601)' \
+	>"$agefile"
--- a/filter.c
+++ b/filter.c
@ -8,23 +8,13 @@

 #include "cgit.h"
 #include "html.h"
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <dlfcn.h>
-#include <errno.h>
 #ifndef NO_LUA
+#include <dlfcn.h>
 #include <lua.h>
 #include <lualib.h>
 #include <lauxlib.h>
 #endif

-static ssize_t (*libc_write)(int fd, const void *buf, size_t count);
-static ssize_t (*filter_write)(struct cgit_filter *base, const void *buf, size_t count) = NULL;
-static struct cgit_filter *current_write_filter = NULL;
-
 static inline void reap_filter(struct cgit_filter *filter)
 {
 	if (filter && filter->cleanup)
@ -49,40 +39,10 @@ void cgit_cleanup_filters(void)
 	}
 }

-void cgit_init_filters(void)
-{
-	libc_write = dlsym(RTLD_NEXT, "write");
-	if (!libc_write)
-		die("Could not locate libc's write function");
-}
-
-ssize_t write(int fd, const void *buf, size_t count)
-{
-	if (fd != STDOUT_FILENO || !filter_write)
-		return libc_write(fd, buf, count);
-	return filter_write(current_write_filter, buf, count);
-}
-
-static inline void hook_write(struct cgit_filter *filter, ssize_t (*new_write)(struct cgit_filter *base, const void *buf, size_t count))
-{
-	/* We want to avoid buggy nested patterns. */
-	assert(filter_write == NULL);
-	assert(current_write_filter == NULL);
-	current_write_filter = filter;
-	filter_write = new_write;
-}
-
-static inline void unhook_write(void)
-{
-	assert(filter_write != NULL);
-	assert(current_write_filter != NULL);
-	filter_write = NULL;
-	current_write_filter = NULL;
-}
-
 static int open_exec_filter(struct cgit_filter *base, va_list ap)
 {
 	struct cgit_exec_filter *filter = (struct cgit_exec_filter *)base;
+	int pipe_fh[2];
 	int i;

 	for (i = 0; i < filter->base.argument_count; i++)
@ -90,19 +50,19 @@ static int open_exec_filter(struct cgit_filter *base, va_list ap)

 	filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
 		"Unable to duplicate STDOUT");
-	chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
+	chk_zero(pipe(pipe_fh), "Unable to create pipe to subprocess");
 	filter->pid = chk_non_negative(fork(), "Unable to create subprocess");
 	if (filter->pid == 0) {
-		close(filter->pipe_fh[1]);
-		chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO),
+		close(pipe_fh[1]);
+		chk_non_negative(dup2(pipe_fh[0], STDIN_FILENO),
 			"Unable to use pipe as STDIN");
 		execvp(filter->cmd, filter->argv);
 		die_errno("Unable to exec subprocess %s", filter->cmd);
 	}
-	close(filter->pipe_fh[0]);
-	chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO),
+	close(pipe_fh[0]);
+	chk_non_negative(dup2(pipe_fh[1], STDOUT_FILENO),
 		"Unable to use pipe as STDOUT");
-	close(filter->pipe_fh[1]);
+	close(pipe_fh[1]);
 	return 0;
 }

@ -176,7 +136,48 @@ void cgit_exec_filter_init(struct cgit_exec_filter *filter, char *cmd, char **ar
 	filter->base.argument_count = 0;
 }

+#ifdef NO_LUA
+void cgit_init_filters(void)
+{
+}
+#endif
+
 #ifndef NO_LUA
+static ssize_t (*libc_write)(int fd, const void *buf, size_t count);
+static ssize_t (*filter_write)(struct cgit_filter *base, const void *buf, size_t count) = NULL;
+static struct cgit_filter *current_write_filter = NULL;
+
+void cgit_init_filters(void)
+{
+	libc_write = dlsym(RTLD_NEXT, "write");
+	if (!libc_write)
+		die("Could not locate libc's write function");
+}
+
+ssize_t write(int fd, const void *buf, size_t count)
+{
+	if (fd != STDOUT_FILENO || !filter_write)
+		return libc_write(fd, buf, count);
+	return filter_write(current_write_filter, buf, count);
+}
+
+static inline void hook_write(struct cgit_filter *filter, ssize_t (*new_write)(struct cgit_filter *base, const void *buf, size_t count))
+{
+	/* We want to avoid buggy nested patterns. */
+	assert(filter_write == NULL);
+	assert(current_write_filter == NULL);
+	current_write_filter = filter;
+	filter_write = new_write;
+}
+
+static inline void unhook_write(void)
+{
+	assert(filter_write != NULL);
+	assert(current_write_filter != NULL);
+	filter_write = NULL;
+	current_write_filter = NULL;
+}
+
 struct lua_filter {
 	struct cgit_filter base;
 	char *script_file;
--- a/filters/about-formatting.sh
+++ b/filters/about-formatting.sh
@ -3,7 +3,7 @@
 # This may be used with the about-filter or repo.about-filter setting in cgitrc.
 # It passes formatting of about pages to differing programs, depending on the usage.

-# Markdown support requires perl.
+# Markdown support requires python and markdown-python.
 # RestructuredText support requires python and docutils.
 # Man page support requires groff.

--- a/filters/commit-links.sh
+++ b/filters/commit-links.sh
@ -19,7 +19,7 @@ regex=''

 # This expression generates links to commits referenced by their SHA1.
 regex=$regex'
-s|\b([0-9a-fA-F]{7,40})\b|<a href="./?id=\1">\1</a>|g'
+s|\b([0-9a-fA-F]{7,64})\b|<a href="./?id=\1">\1</a>|g'

 # This expression generates links to a fictional bugtracker.
 regex=$regex'
--- a/filters/email-gravatar.lua
+++ b/filters/email-gravatar.lua
@ -3,15 +3,24 @@
 -- prefix in filters. It is much faster than the corresponding python script.
 --
 -- Requirements:
-- 	luacrypto >= 0.3
-- 	<http://mkottman.github.io/luacrypto/>
+-- 	luaossl
+-- 	<http://25thandclement.com/~william/projects/luaossl.html>
 --

-local crypto = require("crypto")
+local digest = require("openssl.digest")
+
+function md5_hex(input)
+	local b = digest.new("md5"):final(input)
+	local x = ""
+	for i = 1, #b do
+		x = x .. string.format("%.2x", string.byte(b, i))
+	end
+	return x
+end

 function filter_open(email, page)
 	buffer = ""
-	md5 = crypto.digest("md5", email:sub(2, -2):lower())
+	md5 = md5_hex(email:sub(2, -2):lower())
 end

 function filter_close()
--- a/filters/email-libravatar.lua
+++ b/filters/email-libravatar.lua
@ -3,15 +3,24 @@
 -- prefix in filters.
 --
 -- Requirements:
-- 	luacrypto >= 0.3
-- 	<http://mkottman.github.io/luacrypto/>
+-- 	luaossl
+-- 	<http://25thandclement.com/~william/projects/luaossl.html>
 --

-local crypto = require("crypto")
+local digest = require("openssl.digest")
+
+function md5_hex(input)
+	local b = digest.new("md5"):final(input)
+	local x = ""
+	for i = 1, #b do
+		x = x .. string.format("%.2x", string.byte(b, i))
+	end
+	return x
+end

 function filter_open(email, page)
 	buffer = ""
-	md5 = crypto.digest("md5", email:sub(2, -2):lower())
+	md5 = md5_hex(email:sub(2, -2):lower())
 end

 function filter_close()
--- a/filters/file-authentication.lua
+++ b/filters/file-authentication.lua
@ -0,0 +1,359 @@
+-- This script may be used with the auth-filter.
+--
+-- Requirements:
+-- 	luaossl
+-- 	<http://25thandclement.com/~william/projects/luaossl.html>
+-- 	luaposix
+-- 	<https://github.com/luaposix/luaposix>
+--
+local sysstat = require("posix.sys.stat")
+local unistd = require("posix.unistd")
+local rand = require("openssl.rand")
+local hmac = require("openssl.hmac")
+
+-- This file should contain a series of lines in the form of:
+--	username1:hash1
+--	username2:hash2
+--	username3:hash3
+--	...
+-- Hashes can be generated using something like `mkpasswd -m sha-512 -R 300000`.
+-- This file should not be world-readable.
+local users_filename = "/etc/cgit-auth/users"
+
+-- This file should contain a series of lines in the form of:
+-- 	groupname1:username1,username2,username3,...
+--	...
+local groups_filename = "/etc/cgit-auth/groups"
+
+-- This file should contain a series of lines in the form of:
+-- 	reponame1:groupname1,groupname2,groupname3,...
+--	...
+local repos_filename = "/etc/cgit-auth/repos"
+
+-- Set this to a path this script can write to for storing a persistent
+-- cookie secret, which should not be world-readable.
+local secret_filename = "/var/cache/cgit/auth-secret"
+
+--
+--
+-- Authentication functions follow below. Swap these out if you want different authentication semantics.
+--
+--
+
+-- Looks up a hash for a given user.
+function lookup_hash(user)
+	local line
+	for line in io.lines(users_filename) do
+		local u, h = string.match(line, "(.-):(.+)")
+		if u:lower() == user:lower() then
+			return h
+		end
+	end
+	return nil
+end
+
+-- Looks up users for a given repo.
+function lookup_users(repo)
+	local users = nil
+	local groups = nil
+	local line, group, user
+	for line in io.lines(repos_filename) do
+		local r, g = string.match(line, "(.-):(.+)")
+		if r == repo then
+			groups = { }
+			for group in string.gmatch(g, "([^,]+)") do
+				groups[group:lower()] = true
+			end
+			break
+		end
+	end
+	if groups == nil then
+		return nil
+	end
+	for line in io.lines(groups_filename) do
+		local g, u = string.match(line, "(.-):(.+)")
+		if groups[g:lower()] then
+			if users == nil then
+				users = { }
+			end
+			for user in string.gmatch(u, "([^,]+)") do
+				users[user:lower()] = true
+			end
+		end
+	end
+	return users
+end
+
+
+-- Sets HTTP cookie headers based on post and sets up redirection.
+function authenticate_post()
+	local hash = lookup_hash(post["username"])
+	local redirect = validate_value("redirect", post["redirect"])
+
+	if redirect == nil then
+		not_found()
+		return 0
+	end
+
+	redirect_to(redirect)
+
+	if hash == nil or hash ~= unistd.crypt(post["password"], hash) then
+		set_cookie("cgitauth", "")
+	else
+		-- One week expiration time
+		local username = secure_value("username", post["username"], os.time() + 604800)
+		set_cookie("cgitauth", username)
+	end
+
+	html("\n")
+	return 0
+end
+
+
+-- Returns 1 if the cookie is valid and 0 if it is not.
+function authenticate_cookie()
+	accepted_users = lookup_users(cgit["repo"])
+	if accepted_users == nil then
+		-- We return as valid if the repo is not protected.
+		return 1
+	end
+
+	local username = validate_value("username", get_cookie(http["cookie"], "cgitauth"))
+	if username == nil or not accepted_users[username:lower()] then
+		return 0
+	else
+		return 1
+	end
+end
+
+-- Prints the html for the login form.
+function body()
+	html("<h2>Authentication Required</h2>")
+	html("<form method='post' action='")
+	html_attr(cgit["login"])
+	html("'>")
+	html("<input type='hidden' name='redirect' value='")
+	html_attr(secure_value("redirect", cgit["url"], 0))
+	html("' />")
+	html("<table>")
+	html("<tr><td><label for='username'>Username:</label></td><td><input id='username' name='username' autofocus /></td></tr>")
+	html("<tr><td><label for='password'>Password:</label></td><td><input id='password' name='password' type='password' /></td></tr>")
+	html("<tr><td colspan='2'><input value='Login' type='submit' /></td></tr>")
+	html("</table></form>")
+
+	return 0
+end
+
+
+
+--
+--
+-- Wrapper around filter API, exposing the http table, the cgit table, and the post table to the above functions.
+--
+--
+
+local actions = {}
+actions["authenticate-post"] = authenticate_post
+actions["authenticate-cookie"] = authenticate_cookie
+actions["body"] = body
+
+function filter_open(...)
+	action = actions[select(1, ...)]
+
+	http = {}
+	http["cookie"] = select(2, ...)
+	http["method"] = select(3, ...)
+	http["query"] = select(4, ...)
+	http["referer"] = select(5, ...)
+	http["path"] = select(6, ...)
+	http["host"] = select(7, ...)
+	http["https"] = select(8, ...)
+
+	cgit = {}
+	cgit["repo"] = select(9, ...)
+	cgit["page"] = select(10, ...)
+	cgit["url"] = select(11, ...)
+	cgit["login"] = select(12, ...)
+
+end
+
+function filter_close()
+	return action()
+end
+
+function filter_write(str)
+	post = parse_qs(str)
+end
+
+
+--
+--
+-- Utility functions based on keplerproject/wsapi.
+--
+--
+
+function url_decode(str)
+	if not str then
+		return ""
+	end
+	str = string.gsub(str, "+", " ")
+	str = string.gsub(str, "%%(%x%x)", function(h) return string.char(tonumber(h, 16)) end)
+	str = string.gsub(str, "\r\n", "\n")
+	return str
+end
+
+function url_encode(str)
+	if not str then
+		return ""
+	end
+	str = string.gsub(str, "\n", "\r\n")
+	str = string.gsub(str, "([^%w ])", function(c) return string.format("%%%02X", string.byte(c)) end)
+	str = string.gsub(str, " ", "+")
+	return str
+end
+
+function parse_qs(qs)
+	local tab = {}
+	for key, val in string.gmatch(qs, "([^&=]+)=([^&=]*)&?") do
+		tab[url_decode(key)] = url_decode(val)
+	end
+	return tab
+end
+
+function get_cookie(cookies, name)
+	cookies = string.gsub(";" .. cookies .. ";", "%s*;%s*", ";")
+	return url_decode(string.match(cookies, ";" .. name .. "=(.-);"))
+end
+
+function tohex(b)
+	local x = ""
+	for i = 1, #b do
+		x = x .. string.format("%.2x", string.byte(b, i))
+	end
+	return x
+end
+
+--
+--
+-- Cookie construction and validation helpers.
+--
+--
+
+local secret = nil
+
+-- Loads a secret from a file, creates a secret, or returns one from memory.
+function get_secret()
+	if secret ~= nil then
+		return secret
+	end
+	local secret_file = io.open(secret_filename, "r")
+	if secret_file == nil then
+		local old_umask = sysstat.umask(63)
+		local temporary_filename = secret_filename .. ".tmp." .. tohex(rand.bytes(16))
+		local temporary_file = io.open(temporary_filename, "w")
+		if temporary_file == nil then
+			os.exit(177)
+		end
+		temporary_file:write(tohex(rand.bytes(32)))
+		temporary_file:close()
+		unistd.link(temporary_filename, secret_filename) -- Intentionally fails in the case that another process is doing the same.
+		unistd.unlink(temporary_filename)
+		sysstat.umask(old_umask)
+		secret_file = io.open(secret_filename, "r")
+	end
+	if secret_file == nil then
+		os.exit(177)
+	end
+	secret = secret_file:read()
+	secret_file:close()
+	if secret:len() ~= 64 then
+		os.exit(177)
+	end
+	return secret
+end
+
+-- Returns value of cookie if cookie is valid. Otherwise returns nil.
+function validate_value(expected_field, cookie)
+	local i = 0
+	local value = ""
+	local field = ""
+	local expiration = 0
+	local salt = ""
+	local chmac = ""
+
+	if cookie == nil or cookie:len() < 3 or cookie:sub(1, 1) == "|" then
+		return nil
+	end
+
+	for component in string.gmatch(cookie, "[^|]+") do
+		if i == 0 then
+			field = component
+		elseif i == 1 then
+			value = component
+		elseif i == 2 then
+			expiration = tonumber(component)
+			if expiration == nil then
+				expiration = -1
+			end
+		elseif i == 3 then
+			salt = component
+		elseif i == 4 then
+			chmac = component
+		else
+			break
+		end
+		i = i + 1
+	end
+
+	if chmac == nil or chmac:len() == 0 then
+		return nil
+	end
+
+	-- Lua hashes strings, so these comparisons are time invariant.
+	if chmac ~= tohex(hmac.new(get_secret(), "sha256"):final(field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt)) then
+		return nil
+	end
+
+	if expiration == -1 or (expiration ~= 0 and expiration <= os.time()) then
+		return nil
+	end
+
+	if url_decode(field) ~= expected_field then
+		return nil
+	end
+
+	return url_decode(value)
+end
+
+function secure_value(field, value, expiration)
+	if value == nil or value:len() <= 0 then
+		return ""
+	end
+
+	local authstr = ""
+	local salt = tohex(rand.bytes(16))
+	value = url_encode(value)
+	field = url_encode(field)
+	authstr = field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt
+	authstr = authstr .. "|" .. tohex(hmac.new(get_secret(), "sha256"):final(authstr))
+	return authstr
+end
+
+function set_cookie(cookie, value)
+	html("Set-Cookie: " .. cookie .. "=" .. value .. "; HttpOnly")
+	if http["https"] == "yes" or http["https"] == "on" or http["https"] == "1" then
+		html("; secure")
+	end
+	html("\n")
+end
+
+function redirect_to(url)
+	html("Status: 302 Redirect\n")
+	html("Cache-Control: no-cache, no-store\n")
+	html("Location: " .. url .. "\n")
+end
+
+function not_found()
+	html("Status: 404 Not Found\n")
+	html("Cache-Control: no-cache, no-store\n\n")
+end
--- a/filters/gentoo-ldap-authentication.lua
+++ b/filters/gentoo-ldap-authentication.lua
@ -1,12 +1,18 @@
 -- This script may be used with the auth-filter. Be sure to configure it as you wish.
 --
 -- Requirements:
-- 	luacrypto >= 0.3
-- 	<http://mkottman.github.io/luacrypto/>
+-- 	luaossl
+-- 	<http://25thandclement.com/~william/projects/luaossl.html>
 -- 	lualdap >= 1.2
-- 	<http://git.zx2c4.com/lualdap/about/>
+-- 	<https://git.zx2c4.com/lualdap/about/>
+-- 	luaposix
+-- 	<https://github.com/luaposix/luaposix>
 --
-
+local sysstat = require("posix.sys.stat")
+local unistd = require("posix.unistd")
+local lualdap = require("lualdap")
+local rand = require("openssl.rand")
+local hmac = require("openssl.hmac")

 --
 --
@ -21,11 +27,9 @@ local protected_repos = {
 	portage = "dev"
 }

-
-- All cookies will be authenticated based on this secret. Make it something
-- totally random and impossible to guess. It should be large.
-local secret = "BE SURE TO CUSTOMIZE THIS STRING TO SOMETHING BIG AND RANDOM"
-
+-- Set this to a path this script can write to for storing a persistent
+-- cookie secret, which should be guarded.
+local secret_filename = "/var/cache/cgit/auth-secret"


 --
@ -102,11 +106,9 @@ end
 --
 --

-local lualdap = require("lualdap")
-
 function gentoo_ldap_user_groups(username, password)
 	-- Ensure the user is alphanumeric
-	if username:match("%W") then
+	if username == nil or username:match("%W") then
 		return nil
 	end

@ -224,6 +226,13 @@ function get_cookie(cookies, name)
 	return string.match(cookies, ";" .. name .. "=(.-);")
 end

+function tohex(b)
+	local x = ""
+	for i = 1, #b do
+		x = x .. string.format("%.2x", string.byte(b, i))
+	end
+	return x
+end

 --
 --
@ -231,7 +240,38 @@ end
 --
 --

-local crypto = require("crypto")
+local secret = nil
+
+-- Loads a secret from a file, creates a secret, or returns one from memory.
+function get_secret()
+	if secret ~= nil then
+		return secret
+	end
+	local secret_file = io.open(secret_filename, "r")
+	if secret_file == nil then
+		local old_umask = sysstat.umask(63)
+		local temporary_filename = secret_filename .. ".tmp." .. tohex(rand.bytes(16))
+		local temporary_file = io.open(temporary_filename, "w")
+		if temporary_file == nil then
+			os.exit(177)
+		end
+		temporary_file:write(tohex(rand.bytes(32)))
+		temporary_file:close()
+		unistd.link(temporary_filename, secret_filename) -- Intentionally fails in the case that another process is doing the same.
+		unistd.unlink(temporary_filename)
+		sysstat.umask(old_umask)
+		secret_file = io.open(secret_filename, "r")
+	end
+	if secret_file == nil then
+		os.exit(177)
+	end
+	secret = secret_file:read()
+	secret_file:close()
+	if secret:len() ~= 64 then
+		os.exit(177)
+	end
+	return secret
+end

 -- Returns value of cookie if cookie is valid. Otherwise returns nil.
 function validate_value(expected_field, cookie)
@ -240,7 +280,7 @@ function validate_value(expected_field, cookie)
 	local field = ""
 	local expiration = 0
 	local salt = ""
-	local hmac = ""
+	local chmac = ""

 	if cookie == nil or cookie:len() < 3 or cookie:sub(1, 1) == "|" then
 		return nil
@ -259,19 +299,19 @@ function validate_value(expected_field, cookie)
 		elseif i == 3 then
 			salt = component
 		elseif i == 4 then
-			hmac = component
+			chmac = component
 		else
 			break
 		end
 		i = i + 1
 	end

-	if hmac == nil or hmac:len() == 0 then
+	if chmac == nil or chmac:len() == 0 then
 		return nil
 	end

 	-- Lua hashes strings, so these comparisons are time invariant.
-	if hmac ~= crypto.hmac.digest("sha1", field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt, secret) then
+	if chmac ~= tohex(hmac.new(get_secret(), "sha256"):final(field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt)) then
 		return nil
 	end

@ -292,11 +332,11 @@ function secure_value(field, value, expiration)
 	end

 	local authstr = ""
-	local salt = crypto.hex(crypto.rand.bytes(16))
+	local salt = tohex(rand.bytes(16))
 	value = url_encode(value)
 	field = url_encode(field)
 	authstr = field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt
-	authstr = authstr .. "|" .. crypto.hmac.digest("sha1", authstr, secret)
+	authstr = authstr .. "|" .. tohex(hmac.new(get_secret(), "sha256"):final(authstr))
 	return authstr
 end

--- a/filters/html-converters/man2html
+++ b/filters/html-converters/man2html
@ -2,4 +2,3 @@
 echo "<div style=\"font-family: monospace\">"
 groff -mandoc -T html -P -r -P -l | egrep -v '(<html>|<head>|<meta|<title>|</title>|</head>|<body>|</body>|</html>|<!DOCTYPE|"http://www.w3.org)'
 echo "</div>"
-
--- a/filters/html-converters/md2html
+++ b/filters/html-converters/md2html
@ -1,2 +1,304 @@
-#!/bin/sh
-exec "$(dirname "$0")/resources/markdown.pl"
+#!/usr/bin/env python3
+import markdown
+import sys
+import io
+from pygments.formatters import HtmlFormatter
+from markdown.extensions.toc import TocExtension
+sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding='utf-8')
+sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
+sys.stdout.write('''
+<style>
+.markdown-body {
+    font-size: 14px;
+    line-height: 1.6;
+    overflow: hidden;
+}
+.markdown-body>*:first-child {
+    margin-top: 0 !important;
+}
+.markdown-body>*:last-child {
+    margin-bottom: 0 !important;
+}
+.markdown-body a.absent {
+    color: #c00;
+}
+.markdown-body a.anchor {
+    display: block;
+    padding-left: 30px;
+    margin-left: -30px;
+    cursor: pointer;
+    position: absolute;
+    top: 0;
+    left: 0;
+    bottom: 0;
+}
+.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4, .markdown-body h5, .markdown-body h6 {
+    margin: 20px 0 10px;
+    padding: 0;
+    font-weight: bold;
+    -webkit-font-smoothing: antialiased;
+    cursor: text;
+    position: relative;
+}
+.markdown-body h1 .mini-icon-link, .markdown-body h2 .mini-icon-link, .markdown-body h3 .mini-icon-link, .markdown-body h4 .mini-icon-link, .markdown-body h5 .mini-icon-link, .markdown-body h6 .mini-icon-link {
+    display: none;
+    color: #000;
+}
+.markdown-body h1:hover a.anchor, .markdown-body h2:hover a.anchor, .markdown-body h3:hover a.anchor, .markdown-body h4:hover a.anchor, .markdown-body h5:hover a.anchor, .markdown-body h6:hover a.anchor {
+    text-decoration: none;
+    line-height: 1;
+    padding-left: 0;
+    margin-left: -22px;
+    top: 15%;
+}
+.markdown-body h1:hover a.anchor .mini-icon-link, .markdown-body h2:hover a.anchor .mini-icon-link, .markdown-body h3:hover a.anchor .mini-icon-link, .markdown-body h4:hover a.anchor .mini-icon-link, .markdown-body h5:hover a.anchor .mini-icon-link, .markdown-body h6:hover a.anchor .mini-icon-link {
+    display: inline-block;
+}
+div#cgit .markdown-body h1 a.toclink, div#cgit .markdown-body h2 a.toclink, div#cgit .markdown-body h3 a.toclink, div#cgit .markdown-body h4 a.toclink, div#cgit .markdown-body h5 a.toclink, div#cgit .markdown-body h6 a.toclink {
+    color: black;
+}
+.markdown-body h1 tt, .markdown-body h1 code, .markdown-body h2 tt, .markdown-body h2 code, .markdown-body h3 tt, .markdown-body h3 code, .markdown-body h4 tt, .markdown-body h4 code, .markdown-body h5 tt, .markdown-body h5 code, .markdown-body h6 tt, .markdown-body h6 code {
+    font-size: inherit;
+}
+.markdown-body h1 {
+    font-size: 28px;
+    color: #000;
+}
+.markdown-body h2 {
+    font-size: 24px;
+    border-bottom: 1px solid #ccc;
+    color: #000;
+}
+.markdown-body h3 {
+    font-size: 18px;
+}
+.markdown-body h4 {
+    font-size: 16px;
+}
+.markdown-body h5 {
+    font-size: 14px;
+}
+.markdown-body h6 {
+    color: #777;
+    font-size: 14px;
+}
+.markdown-body p, .markdown-body blockquote, .markdown-body ul, .markdown-body ol, .markdown-body dl, .markdown-body table, .markdown-body pre {
+    margin: 15px 0;
+}
+.markdown-body hr {
+    border: 2px solid #ccc;
+}
+.markdown-body>h2:first-child, .markdown-body>h1:first-child, .markdown-body>h1:first-child+h2, .markdown-body>h3:first-child, .markdown-body>h4:first-child, .markdown-body>h5:first-child, .markdown-body>h6:first-child {
+    margin-top: 0;
+    padding-top: 0;
+}
+.markdown-body a:first-child h1, .markdown-body a:first-child h2, .markdown-body a:first-child h3, .markdown-body a:first-child h4, .markdown-body a:first-child h5, .markdown-body a:first-child h6 {
+    margin-top: 0;
+    padding-top: 0;
+}
+.markdown-body h1+p, .markdown-body h2+p, .markdown-body h3+p, .markdown-body h4+p, .markdown-body h5+p, .markdown-body h6+p {
+    margin-top: 0;
+}
+.markdown-body li p.first {
+    display: inline-block;
+}
+.markdown-body ul, .markdown-body ol {
+    padding-left: 30px;
+}
+.markdown-body ul.no-list, .markdown-body ol.no-list {
+    list-style-type: none;
+    padding: 0;
+}
+.markdown-body ul li>:first-child, .markdown-body ul li ul:first-of-type, .markdown-body ul li ol:first-of-type, .markdown-body ol li>:first-child, .markdown-body ol li ul:first-of-type, .markdown-body ol li ol:first-of-type {
+    margin-top: 0px;
+}
+.markdown-body ul li p:last-of-type, .markdown-body ol li p:last-of-type {
+    margin-bottom: 0;
+}
+.markdown-body ul ul, .markdown-body ul ol, .markdown-body ol ol, .markdown-body ol ul {
+    margin-bottom: 0;
+}
+.markdown-body dl {
+    padding: 0;
+}
+.markdown-body dl dt {
+    font-size: 14px;
+    font-weight: bold;
+    font-style: italic;
+    padding: 0;
+    margin: 15px 0 5px;
+}
+.markdown-body dl dt:first-child {
+    padding: 0;
+}
+.markdown-body dl dt>:first-child {
+    margin-top: 0px;
+}
+.markdown-body dl dt>:last-child {
+    margin-bottom: 0px;
+}
+.markdown-body dl dd {
+    margin: 0 0 15px;
+    padding: 0 15px;
+}
+.markdown-body dl dd>:first-child {
+    margin-top: 0px;
+}
+.markdown-body dl dd>:last-child {
+    margin-bottom: 0px;
+}
+.markdown-body blockquote {
+    border-left: 4px solid #DDD;
+    padding: 0 15px;
+    color: #777;
+}
+.markdown-body blockquote>:first-child {
+    margin-top: 0px;
+}
+.markdown-body blockquote>:last-child {
+    margin-bottom: 0px;
+}
+.markdown-body table th {
+    font-weight: bold;
+}
+.markdown-body table th, .markdown-body table td {
+    border: 1px solid #ccc;
+    padding: 6px 13px;
+}
+.markdown-body table tr {
+    border-top: 1px solid #ccc;
+    background-color: #fff;
+}
+.markdown-body table tr:nth-child(2n) {
+    background-color: #f8f8f8;
+}
+.markdown-body img {
+    max-width: 100%;
+    -moz-box-sizing: border-box;
+    box-sizing: border-box;
+}
+.markdown-body span.frame {
+    display: block;
+    overflow: hidden;
+}
+.markdown-body span.frame>span {
+    border: 1px solid #ddd;
+    display: block;
+    float: left;
+    overflow: hidden;
+    margin: 13px 0 0;
+    padding: 7px;
+    width: auto;
+}
+.markdown-body span.frame span img {
+    display: block;
+    float: left;
+}
+.markdown-body span.frame span span {
+    clear: both;
+    color: #333;
+    display: block;
+    padding: 5px 0 0;
+}
+.markdown-body span.align-center {
+    display: block;
+    overflow: hidden;
+    clear: both;
+}
+.markdown-body span.align-center>span {
+    display: block;
+    overflow: hidden;
+    margin: 13px auto 0;
+    text-align: center;
+}
+.markdown-body span.align-center span img {
+    margin: 0 auto;
+    text-align: center;
+}
+.markdown-body span.align-right {
+    display: block;
+    overflow: hidden;
+    clear: both;
+}
+.markdown-body span.align-right>span {
+    display: block;
+    overflow: hidden;
+    margin: 13px 0 0;
+    text-align: right;
+}
+.markdown-body span.align-right span img {
+    margin: 0;
+    text-align: right;
+}
+.markdown-body span.float-left {
+    display: block;
+    margin-right: 13px;
+    overflow: hidden;
+    float: left;
+}
+.markdown-body span.float-left span {
+    margin: 13px 0 0;
+}
+.markdown-body span.float-right {
+    display: block;
+    margin-left: 13px;
+    overflow: hidden;
+    float: right;
+}
+.markdown-body span.float-right>span {
+    display: block;
+    overflow: hidden;
+    margin: 13px auto 0;
+    text-align: right;
+}
+.markdown-body code, .markdown-body tt {
+    margin: 0 2px;
+    padding: 0px 5px;
+    border: 1px solid #eaeaea;
+    background-color: #f8f8f8;
+    border-radius: 3px;
+}
+.markdown-body code {
+    white-space: nowrap;
+}
+.markdown-body pre>code {
+    margin: 0;
+    padding: 0;
+    white-space: pre;
+    border: none;
+    background: transparent;
+}
+.markdown-body .highlight pre, .markdown-body pre {
+    background-color: #f8f8f8;
+    border: 1px solid #ccc;
+    font-size: 13px;
+    line-height: 19px;
+    overflow: auto;
+    padding: 6px 10px;
+    border-radius: 3px;
+}
+.markdown-body pre code, .markdown-body pre tt {
+    margin: 0;
+    padding: 0;
+    background-color: transparent;
+    border: none;
+}
+''')
+sys.stdout.write(HtmlFormatter(style='pastie').get_style_defs('.highlight'))
+sys.stdout.write('''
+</style>   
+''')
+sys.stdout.write("<div class='markdown-body'>")
+sys.stdout.flush()
+# Note: you may want to run this through bleach for sanitization
+markdown.markdownFromFile(
+	output_format="html5",
+	extensions=[
+		"markdown.extensions.fenced_code",
+		"markdown.extensions.codehilite",
+		"markdown.extensions.tables",
+		"markdown.extensions.sane_lists",
+		TocExtension(anchorlink=True)],
+	extension_configs={
+		"markdown.extensions.codehilite":{"css_class":"highlight"}})
+sys.stdout.write("</div>")
--- a/filters/html-converters/resources/markdown.pl
+++ b/filters/html-converters/resources/markdown.pl
--- a/filters/html-converters/resources/rst-template.txt
+++ b/filters/html-converters/resources/rst-template.txt
@ -1,4 +0,0 @@
-%(stylesheet)s
-%(body_pre_docinfo)s
-%(docinfo)s
-%(body)s
--- a/filters/html-converters/rst2html
+++ b/filters/html-converters/rst2html
@ -1,2 +1,2 @@
-#!/bin/sh
-rst2html.py --template="$(dirname $0)/resources/rst-template.txt"
+#!/bin/bash
+exec rst2html.py --template <(echo -e "%(stylesheet)s\n%(body_pre_docinfo)s\n%(docinfo)s\n%(body)s")
--- a/filters/html-converters/txt2html
+++ b/filters/html-converters/txt2html
@ -1,4 +1,4 @@
 #!/bin/sh
 echo "<pre>"
-cat
+sed "s|&|\\&amp;|g;s|'|\\&apos;|g;s|\"|\\&quot;|g;s|<|\\&lt;|g;s|>|\\&gt;|g"
 echo "</pre>"
--- a/filters/simple-authentication.lua
+++ b/filters/simple-authentication.lua
@ -1,10 +1,15 @@
 -- This script may be used with the auth-filter. Be sure to configure it as you wish.
 --
 -- Requirements:
-- 	luacrypto >= 0.3
-- 	<http://mkottman.github.io/luacrypto/>
+-- 	luaossl
+-- 	<http://25thandclement.com/~william/projects/luaossl.html>
+-- 	luaposix
+-- 	<https://github.com/luaposix/luaposix>
 --
-
+local sysstat = require("posix.sys.stat")
+local unistd = require("posix.unistd")
+local rand = require("openssl.rand")
+local hmac = require("openssl.hmac")

 --
 --
@ -18,24 +23,16 @@ local protected_repos = {
 	qt		= { jason = true, bob = true }
 }

-- Please note that, in production, you'll want to replace this simple lookup
-- table with either a table of salted and hashed passwords (using something
-- smart like scrypt), or replace this table lookup with an external support,
-- such as consulting your system's pam / shadow system, or an external
-- database, or an external validating web service. For testing, or for
-- extremely low-security usage, you may be able, however, to get away with
-- compromising on hardcoding the passwords in cleartext, as we have done here.
+-- A list of users and hashes, generated with `mkpasswd -m sha-512 -R 300000`.
 local users = {
-	jason		= "secretpassword",
-	laurent		= "s3cr3t",
-	bob		= "ilikelua"
+	jason		= "$6$rounds=300000$YYJct3n/o.ruYK$HhpSeuCuW1fJkpvMZOZzVizeLsBKcGA/aF2UPuV5v60JyH2MVSG6P511UMTj2F3H75.IT2HIlnvXzNb60FcZH1",
+	laurent		= "$6$rounds=300000$dP0KNHwYb3JKigT$pN/LG7rWxQ4HniFtx5wKyJXBJUKP7R01zTNZ0qSK/aivw8ywGAOdfYiIQFqFhZFtVGvr11/7an.nesvm8iJUi.",
+	bob		= "$6$rounds=300000$jCLCCt6LUpTz$PI1vvd1yaVYcCzqH8QAJFcJ60b6W/6sjcOsU7mAkNo7IE8FRGW1vkjF8I/T5jt/auv5ODLb1L4S2s.CAyZyUC"
 }

-- All cookies will be authenticated based on this secret. Make it something
-- totally random and impossible to guess. It should be large.
-local secret = "BE SURE TO CUSTOMIZE THIS STRING TO SOMETHING BIG AND RANDOM"
-
-
+-- Set this to a path this script can write to for storing a persistent
+-- cookie secret, which should be guarded.
+local secret_filename = "/var/cache/cgit/auth-secret"

 --
 --
@ -45,7 +42,7 @@ local secret = "BE SURE TO CUSTOMIZE THIS STRING TO SOMETHING BIG AND RANDOM"

 -- Sets HTTP cookie headers based on post and sets up redirection.
 function authenticate_post()
-	local password = users[post["username"]]
+	local hash = users[post["username"]]
 	local redirect = validate_value("redirect", post["redirect"])

 	if redirect == nil then
@ -55,8 +52,7 @@ function authenticate_post()

 	redirect_to(redirect)

-	-- Lua hashes strings, so these comparisons are time invariant.
-	if password == nil or password ~= post["password"] then
+	if hash == nil or hash ~= unistd.crypt(post["password"], hash) then
 		set_cookie("cgitauth", "")
 	else
 		-- One week expiration time
@ -184,6 +180,13 @@ function get_cookie(cookies, name)
 	return url_decode(string.match(cookies, ";" .. name .. "=(.-);"))
 end

+function tohex(b)
+	local x = ""
+	for i = 1, #b do
+		x = x .. string.format("%.2x", string.byte(b, i))
+	end
+	return x
+end

 --
 --
@ -191,7 +194,38 @@ end
 --
 --

-local crypto = require("crypto")
+local secret = nil
+
+-- Loads a secret from a file, creates a secret, or returns one from memory.
+function get_secret()
+	if secret ~= nil then
+		return secret
+	end
+	local secret_file = io.open(secret_filename, "r")
+	if secret_file == nil then
+		local old_umask = sysstat.umask(63)
+		local temporary_filename = secret_filename .. ".tmp." .. tohex(rand.bytes(16))
+		local temporary_file = io.open(temporary_filename, "w")
+		if temporary_file == nil then
+			os.exit(177)
+		end
+		temporary_file:write(tohex(rand.bytes(32)))
+		temporary_file:close()
+		unistd.link(temporary_filename, secret_filename) -- Intentionally fails in the case that another process is doing the same.
+		unistd.unlink(temporary_filename)
+		sysstat.umask(old_umask)
+		secret_file = io.open(secret_filename, "r")
+	end
+	if secret_file == nil then
+		os.exit(177)
+	end
+	secret = secret_file:read()
+	secret_file:close()
+	if secret:len() ~= 64 then
+		os.exit(177)
+	end
+	return secret
+end

 -- Returns value of cookie if cookie is valid. Otherwise returns nil.
 function validate_value(expected_field, cookie)
@ -200,7 +234,7 @@ function validate_value(expected_field, cookie)
 	local field = ""
 	local expiration = 0
 	local salt = ""
-	local hmac = ""
+	local chmac = ""

 	if cookie == nil or cookie:len() < 3 or cookie:sub(1, 1) == "|" then
 		return nil
@ -219,19 +253,19 @@ function validate_value(expected_field, cookie)
 		elseif i == 3 then
 			salt = component
 		elseif i == 4 then
-			hmac = component
+			chmac = component
 		else
 			break
 		end
 		i = i + 1
 	end

-	if hmac == nil or hmac:len() == 0 then
+	if chmac == nil or chmac:len() == 0 then
 		return nil
 	end

 	-- Lua hashes strings, so these comparisons are time invariant.
-	if hmac ~= crypto.hmac.digest("sha1", field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt, secret) then
+	if chmac ~= tohex(hmac.new(get_secret(), "sha256"):final(field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt)) then
 		return nil
 	end

@ -252,11 +286,11 @@ function secure_value(field, value, expiration)
 	end

 	local authstr = ""
-	local salt = crypto.hex(crypto.rand.bytes(16))
+	local salt = tohex(rand.bytes(16))
 	value = url_encode(value)
 	field = url_encode(field)
 	authstr = field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt
-	authstr = authstr .. "|" .. crypto.hmac.digest("sha1", authstr, secret)
+	authstr = authstr .. "|" .. tohex(hmac.new(get_secret(), "sha256"):final(authstr))
 	return authstr
 end

--- a/filters/syntax-highlighting.py
+++ b/filters/syntax-highlighting.py
@ -1,6 +1,6 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3

-# This script uses Pygments and Python2. You must have both installed
+# This script uses Pygments and Python3. You must have both installed
 # for this to work.
 #
 # http://pygments.org/
@ -21,6 +21,7 @@


 import sys
+import io
 from pygments import highlight
 from pygments.util import ClassNotFound
 from pygments.lexers import TextLexer
@ -29,25 +30,26 @@ from pygments.lexers import guess_lexer_for_filename
 from pygments.formatters import HtmlFormatter


-# read stdin and decode to utf-8. ignore any unkown signs.
-data = sys.stdin.read().decode(encoding='utf-8', errors='ignore')
+sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding='utf-8', errors='replace')
+sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='replace')
+data = sys.stdin.read()
 filename = sys.argv[1]
-formatter = HtmlFormatter(encoding='utf-8', style='pastie')
+formatter = HtmlFormatter(style='pastie', nobackground=True)

 try:
-	lexer = guess_lexer_for_filename(filename, data, encoding='utf-8')
+	lexer = guess_lexer_for_filename(filename, data)
 except ClassNotFound:
 	# check if there is any shebang
 	if data[0:2] == '#!':
-		lexer = guess_lexer(data, encoding='utf-8')
+		lexer = guess_lexer(data)
 	else:
-		lexer = TextLexer(encoding='utf-8')
+		lexer = TextLexer()
 except TypeError:
-	lexer = TextLexer(encoding='utf-8')
+	lexer = TextLexer()

 # highlight! :-)
 # printout pygments' css definitions as well
 sys.stdout.write('<style>')
 sys.stdout.write(formatter.get_style_defs('.highlight'))
 sys.stdout.write('</style>')
-highlight(data, lexer, formatter, outfile=sys.stdout)
+sys.stdout.write(highlight(data, lexer, formatter, outfile=None))
--- a/filters/syntax-highlighting.sh
+++ b/filters/syntax-highlighting.sh
@ -1,6 +1,6 @@
 #!/bin/sh
 # This script can be used to implement syntax highlighting in the cgit
-# tree-view by refering to this file with the source-filter or repo.source-
+# tree-view by referring to this file with the source-filter or repo.source-
 # filter options in cgitrc.
 #
 # This script requires a shell supporting the ${var##pattern} syntax.
--- a/2
+++ b/2
@ -1 +1 @@
-Subproject commit 1165ae6f3d42e0eb0ddfc2d4e6dfa8bd0b88eb60
+Subproject commit c48035d29b4e524aed3a32f0403676f0d9128863
--- a/html.c
+++ b/html.c
@ -8,12 +8,7 @@

 #include "cgit.h"
 #include "html.h"
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
+#include "url.h"

 /* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
 static const char* url_escape_table[256] = {
@ -64,7 +59,7 @@ char *fmt(const char *format, ...)
 	va_start(args, format);
 	len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
 	va_end(args);
-	if (len > sizeof(buf[bufidx])) {
+	if (len >= sizeof(buf[bufidx])) {
 		fprintf(stderr, "[html.c] string truncated: %s\n", format);
 		exit(1);
 	}
@ -127,38 +122,22 @@ void html_vtxtf(const char *format, va_list ap)
 	strbuf_release(&buf);
 }

-void html_status(int code, const char *msg, int more_headers)
-{
-	htmlf("Status: %d %s\n", code, msg);
-	if (!more_headers)
-		html("\n");
-}
-
 void html_txt(const char *txt)
 {
-	const char *t = txt;
-	while (t && *t) {
-		int c = *t;
-		if (c == '<' || c == '>' || c == '&') {
-			html_raw(txt, t - txt);
-			if (c == '>')
-				html("&gt;");
-			else if (c == '<')
-				html("&lt;");
-			else if (c == '&')
-				html("&amp;");
-			txt = t + 1;
-		}
-		t++;
-	}
-	if (t != txt)
-		html(txt);
+	if (txt)
+		html_ntxt(txt, strlen(txt));
 }

-void html_ntxt(int len, const char *txt)
+ssize_t html_ntxt(const char *txt, size_t len)
 {
 	const char *t = txt;
-	while (t && *t && len--) {
+	ssize_t slen;
+
+	if (len > SSIZE_MAX)
+		return -1;
+
+	slen = (ssize_t) len;
+	while (t && *t && slen--) {
 		int c = *t;
 		if (c == '<' || c == '>' || c == '&') {
 			html_raw(txt, t - txt);
@ -174,8 +153,7 @@ void html_ntxt(int len, const char *txt)
 	}
 	if (t != txt)
 		html_raw(txt, t - txt);
-	if (len < 0)
-		html("...");
+	return slen;
 }

 void html_attrf(const char *fmt, ...)
@ -252,6 +230,32 @@ void html_url_arg(const char *txt)
 		html(txt);
 }

+void html_header_arg_in_quotes(const char *txt)
+{
+	const char *t = txt;
+	while (t && *t) {
+		unsigned char c = *t;
+		const char *e = NULL;
+		if (c == '\\')
+			e = "\\\\";
+		else if (c == '\r')
+			e = "\\r";
+		else if (c == '\n')
+			e = "\\n";
+		else if (c == '"')
+			e = "\\\"";
+		if (e) {
+			html_raw(txt, t - txt);
+			html(e);
+			txt = t + 1;
+		}
+		t++;
+	}
+	if (t != txt)
+		html(txt);
+
+}
+
 void html_hidden(const char *name, const char *value)
 {
 	html("<input type='hidden' name='");
@ -324,64 +328,17 @@ int html_include(const char *filename)
 	return 0;
 }

-static int hextoint(char c)
-{
-	if (c >= 'a' && c <= 'f')
-		return 10 + c - 'a';
-	else if (c >= 'A' && c <= 'F')
-		return 10 + c - 'A';
-	else if (c >= '0' && c <= '9')
-		return c - '0';
-	else
-		return -1;
-}
-
-static char *convert_query_hexchar(char *txt)
+void http_parse_querystring(const char *txt, void (*fn)(const char *name, const char *value))
 {
-	int d1, d2, n;
-	n = strlen(txt);
-	if (n < 3) {
-		*txt = '\0';
-		return txt-1;
-	}
-	d1 = hextoint(*(txt + 1));
-	d2 = hextoint(*(txt + 2));
-	if (d1 < 0 || d2 < 0) {
-		memmove(txt, txt + 3, n - 2);
-		return txt-1;
-	} else {
-		*txt = d1 * 16 + d2;
-		memmove(txt + 1, txt + 3, n - 2);
-		return txt;
-	}
-}
+	const char *t = txt;

-int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
-{
-	char *o, *t, *txt, *value = NULL, c;
-
-	if (!txt_)
-		return 0;
-
-	o = t = txt = xstrdup(txt_);
-	while ((c=*t) != '\0') {
-		if (c == '=') {
-			*t = '\0';
-			value = t + 1;
-		} else if (c == '+') {
-			*t = ' ';
-		} else if (c == '%') {
-			t = convert_query_hexchar(t);
-		} else if (c == '&') {
-			*t = '\0';
-			(*fn)(txt, value);
-			txt = t + 1;
-			value = NULL;
+	while (t && *t) {
+		char *name = url_decode_parameter_name(&t);
+		if (*name) {
+			char *value = url_decode_parameter_value(&t);
+			fn(name, value);
+			free(value);
 		}
-		t++;
+		free(name);
 	}
-	if (t != txt)
-		(*fn)(txt, value);
-	free(o);
-	return 0;
 }
--- a/html.h
+++ b/html.h
@ -18,12 +18,12 @@ extern void html_vtxtf(const char *format, va_list ap);
 __attribute__((format (printf,1,2)))
 extern void html_attrf(const char *format,...);

-extern void html_status(int code, const char *msg, int more_headers);
 extern void html_txt(const char *txt);
-extern void html_ntxt(int len, const char *txt);
+extern ssize_t html_ntxt(const char *txt, size_t len);
 extern void html_attr(const char *txt);
 extern void html_url_path(const char *txt);
 extern void html_url_arg(const char *txt);
+extern void html_header_arg_in_quotes(const char *txt);
 extern void html_hidden(const char *name, const char *value);
 extern void html_option(const char *value, const char *text, const char *selected_value);
 extern void html_intoption(int value, const char *text, int selected_value);
@ -32,6 +32,6 @@ extern void html_link_close(void);
 extern void html_fileperm(unsigned short mode);
 extern int html_include(const char *filename);

-extern int http_parse_querystring(const char *txt, void (*fn)(const char *name, const char *value));
+extern void http_parse_querystring(const char *txt, void (*fn)(const char *name, const char *value));

 #endif /* HTML_H */
--- a/parsing.c
+++ b/parsing.c
@ -20,10 +20,10 @@ void cgit_parse_url(const char *url)
 	char *c, *cmd, *p;
 	struct cgit_repo *repo;

-	ctx.repo = NULL;
 	if (!url || url[0] == '\0')
 		return;

+	ctx.qry.page = NULL;
 	ctx.repo = cgit_get_repoinfo(url);
 	if (ctx.repo) {
 		ctx.qry.repo = ctx.repo->url;
@ -53,7 +53,6 @@ void cgit_parse_url(const char *url)
 		}
 		if (cmd[1])
 			ctx.qry.page = xstrdup(cmd + 1);
-		return;
 	}
 }

@ -64,12 +63,11 @@ static char *substr(const char *head, const char *tail)
 	if (tail < head)
 		return xstrdup("");
 	buf = xmalloc(tail - head + 1);
-	strncpy(buf, head, tail - head);
-	buf[tail - head] = '\0';
+	strlcpy(buf, head, tail - head + 1);
 	return buf;
 }

-static void parse_user(const char *t, char **name, char **email, unsigned long *date)
+static void parse_user(const char *t, char **name, char **email, unsigned long *date, int *tz)
 {
 	struct ident_split ident;
 	unsigned email_len;
@ -79,10 +77,12 @@ static void parse_user(const char *t, char **name, char **email, unsigned long *

 		email_len = ident.mail_end - ident.mail_begin;
 		*email = xmalloc(strlen("<") + email_len + strlen(">") + 1);
-		sprintf(*email, "<%.*s>", email_len, ident.mail_begin);
+		xsnprintf(*email, email_len + 3, "<%.*s>", email_len, ident.mail_begin);

 		if (ident.date_begin)
 			*date = strtoul(ident.date_begin, NULL, 10);
+		if (ident.tz_begin)
+			*tz = atoi(ident.tz_begin);
 	}
 }

@ -127,9 +127,8 @@ static int end_of_header(const char *p)

 struct commitinfo *cgit_parse_commit(struct commit *commit)
 {
-	const int sha1hex_len = 40;
 	struct commitinfo *ret;
-	const char *p = get_cached_commit_buffer(commit, NULL);
+	const char *p = repo_get_commit_buffer(the_repository, commit, NULL);
 	const char *t;

 	ret = xcalloc(1, sizeof(struct commitinfo));
@ -139,21 +138,21 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
 		return ret;

 	if (!skip_prefix(p, "tree ", &p))
-		die("Bad commit: %s", sha1_to_hex(commit->object.sha1));
-	p += sha1hex_len + 1;
+		die("Bad commit: %s", oid_to_hex(&commit->object.oid));
+	p += the_hash_algo->hexsz + 1;

 	while (skip_prefix(p, "parent ", &p))
-		p += sha1hex_len + 1;
+		p += the_hash_algo->hexsz + 1;

 	if (p && skip_prefix(p, "author ", &p)) {
 		parse_user(p, &ret->author, &ret->author_email,
-			&ret->author_date);
+			&ret->author_date, &ret->author_tz);
 		p = next_header_line(p);
 	}

 	if (p && skip_prefix(p, "committer ", &p)) {
 		parse_user(p, &ret->committer, &ret->committer_email,
-			&ret->committer_date);
+			&ret->committer_date, &ret->committer_tz);
 		p = next_header_line(p);
 	}

@ -199,7 +198,7 @@ struct taginfo *cgit_parse_tag(struct tag *tag)
 	const char *p;
 	struct taginfo *ret = NULL;

-	data = read_sha1_file(tag->object.sha1, &type, &size);
+	data = read_object_file(&tag->object.oid, &type, &size);
 	if (!data || type != OBJ_TAG)
 		goto cleanup;

@ -208,7 +207,7 @@ struct taginfo *cgit_parse_tag(struct tag *tag)
 	for (p = data; !end_of_header(p); p = next_header_line(p)) {
 		if (skip_prefix(p, "tagger ", &p)) {
 			parse_user(p, &ret->tagger, &ret->tagger_email,
-				&ret->tagger_date);
+				&ret->tagger_date, &ret->tagger_tz);
 		}
 	}

--- a/robots.txt
+++ b/robots.txt
@ -1,3 +1,4 @@
 User-agent: *
 Disallow: /*/snapshot/*
+Disallow: /*/blame/*
 Allow: /
--- a/scan-tree.c
+++ b/scan-tree.c
@ -10,6 +10,7 @@
 #include "scan-tree.h"
 #include "configfile.h"
 #include "html.h"
+#include <config.h>

 /* return 1 if path contains a objects/ directory and a HEAD file */
 static int is_git_dir(const char *path)
@ -48,21 +49,25 @@ out:
 static struct cgit_repo *repo;
 static repo_config_fn config_fn;

-static void repo_config(const char *name, const char *value)
+static void scan_tree_repo_config(const char *name, const char *value)
 {
 	config_fn(repo, name, value);
 }

 static int gitconfig_config(const char *key, const char *value, void *cb)
 {
+	const char *name;
+
 	if (!strcmp(key, "gitweb.owner"))
 		config_fn(repo, "owner", value);
 	else if (!strcmp(key, "gitweb.description"))
 		config_fn(repo, "desc", value);
 	else if (!strcmp(key, "gitweb.category"))
 		config_fn(repo, "section", value);
-	else if (starts_with(key, "cgit."))
-		config_fn(repo, key + 5, value);
+	else if (!strcmp(key, "gitweb.homepage"))
+		config_fn(repo, "homepage", value);
+	else if (skip_prefix(key, "cgit.", &name))
+		config_fn(repo, name, value);

 	return 0;
 }
@ -174,7 +179,7 @@ static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)

 	strbuf_addstr(path, "cgitrc");
 	if (!stat(path->buf, &st))
-		parse_configfile(xstrdup(path->buf), &repo_config);
+		parse_configfile(path->buf, &scan_tree_repo_config);

 	strbuf_release(&rel);
 }
@ -244,7 +249,7 @@ void scan_projects(const char *path, const char *projectsfile, repo_config_fn fn
 			projectsfile, strerror(errno), errno);
 		return;
 	}
-	while (strbuf_getline(&line, projects, '\n') != EOF) {
+	while (strbuf_getline(&line, projects) != EOF) {
 		if (!line.len)
 			continue;
 		strbuf_insert(&line, 0, "/", 1);
--- a/shared.c
+++ b/shared.c
@ -7,7 +7,6 @@
 */

 #include "cgit.h"
-#include <stdio.h>

 struct cgit_repolist cgit_repolist;
 struct cgit_context ctx;
@ -54,14 +53,18 @@ struct cgit_repo *cgit_add_repo(const char *url)
 	ret->name = ret->url;
 	ret->path = NULL;
 	ret->desc = cgit_default_repo_desc;
+	ret->extra_head_content = NULL;
 	ret->owner = NULL;
+	ret->homepage = NULL;
 	ret->section = ctx.cfg.section;
 	ret->snapshots = ctx.cfg.snapshots;
+	ret->enable_blame = ctx.cfg.enable_blame;
 	ret->enable_commit_graph = ctx.cfg.enable_commit_graph;
 	ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
 	ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
 	ret->enable_remote_branches = ctx.cfg.enable_remote_branches;
 	ret->enable_subject_links = ctx.cfg.enable_subject_links;
+	ret->enable_html_serving = ctx.cfg.enable_html_serving;
 	ret->max_stats = ctx.cfg.max_stats;
 	ret->branch_sort = ctx.cfg.branch_sort;
 	ret->commit_sort = ctx.cfg.commit_sort;
@ -94,7 +97,7 @@ struct cgit_repo *cgit_get_repoinfo(const char *url)
 	return NULL;
 }

-void *cgit_free_commitinfo(struct commitinfo *info)
+void cgit_free_commitinfo(struct commitinfo *info)
 {
 	free(info->author);
 	free(info->author_email);
@ -104,7 +107,6 @@ void *cgit_free_commitinfo(struct commitinfo *info)
 	free(info->msg);
 	free(info->msg_encoding);
 	free(info);
-	return NULL;
 }

 char *trim_end(const char *str, char c)
@ -142,37 +144,6 @@ void strbuf_ensure_end(struct strbuf *sb, char c)
 		strbuf_addch(sb, c);
 }

-char *strlpart(char *txt, int maxlen)
-{
-	char *result;
-
-	if (!txt)
-		return txt;
-
-	if (strlen(txt) <= maxlen)
-		return txt;
-	result = xmalloc(maxlen + 1);
-	memcpy(result, txt, maxlen - 3);
-	result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
-	result[maxlen] = '\0';
-	return result;
-}
-
-char *strrpart(char *txt, int maxlen)
-{
-	char *result;
-
-	if (!txt)
-		return txt;
-
-	if (strlen(txt) <= maxlen)
-		return txt;
-	result = xmalloc(maxlen + 1);
-	memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
-	result[0] = result[1] = result[2] = '.';
-	return result;
-}
-
 void cgit_add_ref(struct reflist *list, struct refinfo *ref)
 {
 	size_t size;
@ -185,13 +156,13 @@ void cgit_add_ref(struct reflist *list, struct refinfo *ref)
 	list->refs[list->count++] = ref;
 }

-static struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
+static struct refinfo *cgit_mk_refinfo(const char *refname, const struct object_id *oid)
 {
 	struct refinfo *ref;

 	ref = xmalloc(sizeof (struct refinfo));
 	ref->refname = xstrdup(refname);
-	ref->object = parse_object(sha1);
+	ref->object = parse_object(the_repository, oid);
 	switch (ref->object->type) {
 	case OBJ_TAG:
 		ref->tag = cgit_parse_tag((struct tag *)ref->object);
@ -203,7 +174,7 @@ static struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char
 	return ref;
 }

-static void cgit_free_taginfo(struct taginfo *tag)
+void cgit_free_taginfo(struct taginfo *tag)
 {
 	if (tag->tagger)
 		free(tag->tagger);
@ -239,19 +210,19 @@ void cgit_free_reflist_inner(struct reflist *list)
 	free(list->refs);
 }

-int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
+int cgit_refs_cb(const char *refname, const struct object_id *oid, int flags,
 		  void *cb_data)
 {
 	struct reflist *list = (struct reflist *)cb_data;
-	struct refinfo *info = cgit_mk_refinfo(refname, sha1);
+	struct refinfo *info = cgit_mk_refinfo(refname, oid);

 	if (info)
 		cgit_add_ref(list, info);
 	return 0;
 }

-static void cgit_diff_tree_cb(struct diff_queue_struct *q,
-			      struct diff_options *options, void *data)
+void cgit_diff_tree_cb(struct diff_queue_struct *q,
+		       struct diff_options *options, void *data)
 {
 	int i;

@ -262,15 +233,15 @@ static void cgit_diff_tree_cb(struct diff_queue_struct *q,
 	}
 }

-static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
+static int load_mmfile(mmfile_t *file, const struct object_id *oid)
 {
 	enum object_type type;

-	if (is_null_sha1(sha1)) {
+	if (is_null_oid(oid)) {
 		file->ptr = (char *)"";
 		file->size = 0;
 	} else {
-		file->ptr = read_sha1_file(sha1, &type,
+		file->ptr = read_object_file(oid, &type,
 		                           (unsigned long *)&file->size);
 	}
 	return 1;
@ -321,8 +292,8 @@ static int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 	return 0;
 }

-int cgit_diff_files(const unsigned char *old_sha1,
-		    const unsigned char *new_sha1, unsigned long *old_size,
+int cgit_diff_files(const struct object_id *old_oid,
+		    const struct object_id *new_oid, unsigned long *old_size,
 		    unsigned long *new_size, int *binary, int context,
 		    int ignorews, linediff_fn fn)
 {
@ -331,7 +302,7 @@ int cgit_diff_files(const unsigned char *old_sha1,
 	xdemitconf_t emit_params;
 	xdemitcb_t emit_cb;

-	if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
+	if (!load_mmfile(&file1, old_oid) || !load_mmfile(&file2, new_oid))
 		return 1;

 	*old_size = file1.size;
@ -355,7 +326,7 @@ int cgit_diff_files(const unsigned char *old_sha1,
 		diff_params.flags |= XDF_IGNORE_WHITESPACE;
 	emit_params.ctxlen = context > 0 ? context : 3;
 	emit_params.flags = XDL_EMIT_FUNCNAMES;
-	emit_cb.outf = filediff_cb;
+	emit_cb.out_line = filediff_cb;
 	emit_cb.priv = fn;
 	xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
 	if (file1.size)
@ -365,46 +336,46 @@ int cgit_diff_files(const unsigned char *old_sha1,
 	return 0;
 }

-void cgit_diff_tree(const unsigned char *old_sha1,
-		    const unsigned char *new_sha1,
+void cgit_diff_tree(const struct object_id *old_oid,
+		    const struct object_id *new_oid,
 		    filepair_fn fn, const char *prefix, int ignorews)
 {
 	struct diff_options opt;
-	struct pathspec_item item;
+	struct pathspec_item *item;

-	memset(&item, 0, sizeof(item));
 	diff_setup(&opt);
 	opt.output_format = DIFF_FORMAT_CALLBACK;
 	opt.detect_rename = 1;
 	opt.rename_limit = ctx.cfg.renamelimit;
-	DIFF_OPT_SET(&opt, RECURSIVE);
+	opt.flags.recursive = 1;
 	if (ignorews)
 		DIFF_XDL_SET(&opt, IGNORE_WHITESPACE);
 	opt.format_callback = cgit_diff_tree_cb;
 	opt.format_callback_data = fn;
 	if (prefix) {
-		item.match = prefix;
-		item.len = strlen(prefix);
+		item = xcalloc(1, sizeof(*item));
+		item->match = xstrdup(prefix);
+		item->len = strlen(prefix);
 		opt.pathspec.nr = 1;
-		opt.pathspec.items = &item;
+		opt.pathspec.items = item;
 	}
 	diff_setup_done(&opt);

-	if (old_sha1 && !is_null_sha1(old_sha1))
-		diff_tree_sha1(old_sha1, new_sha1, "", &opt);
+	if (old_oid && !is_null_oid(old_oid))
+		diff_tree_oid(old_oid, new_oid, "", &opt);
 	else
-		diff_root_tree_sha1(new_sha1, "", &opt);
+		diff_root_tree_oid(new_oid, "", &opt);
 	diffcore_std(&opt);
 	diff_flush(&opt);
 }

 void cgit_diff_commit(struct commit *commit, filepair_fn fn, const char *prefix)
 {
-	unsigned char *old_sha1 = NULL;
+	const struct object_id *old_oid = NULL;

 	if (commit->parents)
-		old_sha1 = commit->parents->item->object.sha1;
-	cgit_diff_tree(old_sha1, commit->object.sha1, fn, prefix,
+		old_oid = &commit->parents->item->object.oid;
+	cgit_diff_tree(old_oid, &commit->object.oid, fn, prefix,
 		       ctx.qry.ignorews);
 }

@ -419,6 +390,9 @@ int cgit_parse_snapshots_mask(const char *str)
 	if (atoi(str))
 		return 1;

+	if (strcmp(str, "all") == 0)
+		return INT_MAX;
+
 	string_list_split(&tokens, str, ' ', -1);
 	string_list_remove_empty_items(&tokens, 0);

@ -426,7 +400,7 @@ int cgit_parse_snapshots_mask(const char *str)
 		for (f = cgit_snapshot_formats; f->suffix; f++) {
 			if (!strcmp(item->string, f->suffix) ||
 			    !strcmp(item->string, f->suffix + 1)) {
-				rv |= f->bit;
+				rv |= cgit_snapshot_format_bit(f);
 				break;
 			}
 		}
@ -501,15 +475,16 @@ static int is_token_char(char c)
 static char *expand_macro(char *name, int maxlength)
 {
 	char *value;
-	int len;
+	size_t len;

 	len = 0;
 	value = getenv(name);
 	if (value) {
-		len = strlen(value);
+		len = strlen(value) + 1;
 		if (len > maxlength)
 			len = maxlength;
-		strncpy(name, value, len);
+		strlcpy(name, value, len);
+		--len;
 	}
 	return name + len;
 }
@ -561,3 +536,42 @@ char *expand_macros(const char *txt)
 	}
 	return result;
 }
+
+char *get_mimetype_for_filename(const char *filename)
+{
+	char *ext, *mimetype, *token, line[1024], *saveptr;
+	FILE *file;
+	struct string_list_item *mime;
+
+	if (!filename)
+		return NULL;
+
+	ext = strrchr(filename, '.');
+	if (!ext)
+		return NULL;
+	++ext;
+	if (!ext[0])
+		return NULL;
+	mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
+	if (mime)
+		return xstrdup(mime->util);
+
+	if (!ctx.cfg.mimetype_file)
+		return NULL;
+	file = fopen(ctx.cfg.mimetype_file, "r");
+	if (!file)
+		return NULL;
+	while (fgets(line, sizeof(line), file)) {
+		if (!line[0] || line[0] == '#')
+			continue;
+		mimetype = strtok_r(line, " \t\r\n", &saveptr);
+		while ((token = strtok_r(NULL, " \t\r\n", &saveptr))) {
+			if (!strcasecmp(ext, token)) {
+				fclose(file);
+				return xstrdup(mimetype);
+			}
+		}
+	}
+	fclose(file);
+	return NULL;
+}
--- a/tests/Makefile
+++ b/tests/Makefile
@ -1,11 +1,15 @@
+include ../git/config.mak.uname
+-include ../cgit.conf

+SHELL_PATH ?= $(SHELL)
+SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))

 T = $(wildcard t[0-9][0-9][0-9][0-9]-*.sh)

 all: $(T)

 $(T):
-	@./$@ $(CGIT_TEST_OPTS)
+	@'$(SHELL_PATH_SQ)' $@ $(CGIT_TEST_OPTS)

 clean:
 	$(RM) -rf trash
--- a/tests/setup.sh
+++ b/tests/setup.sh
@ -80,13 +80,17 @@ mkrepo() {
 			git commit -m "commit $n"
 			n=$(expr $n + 1)
 		done
-		if test "$3" = "testplus"
-		then
+		case "$3" in
+		testplus)
 			echo "hello" >a+b
 			git add a+b
 			git commit -m "add a+b"
 			git branch "1+2"
-		fi
+			;;
+		commit-graph)
+			git commit-graph write
+			;;
+		esac
 	)
 }

@ -95,7 +99,7 @@ setup_repos()
 	rm -rf cache
 	mkdir -p cache
 	mkrepo repos/foo 5 >/dev/null
-	mkrepo repos/bar 50 >/dev/null
+	mkrepo repos/bar 50 commit-graph >/dev/null
 	mkrepo repos/foo+bar 10 testplus >/dev/null
 	mkrepo "repos/with space" 2 >/dev/null
 	mkrepo repos/filter 5 testplus >/dev/null
@ -104,7 +108,7 @@ virtual-root=/
 cache-root=$PWD/cache

 cache-size=1021
-snapshots=tar.gz tar.bz zip
+snapshots=tar.gz tar.bz tar.lz tar.xz tar.zst zip
 enable-log-filecount=1
 enable-log-linecount=1
 summary-log=5
--- a/tests/t0001-validate-git-versions.sh
+++ b/tests/t0001-validate-git-versions.sh
@ -1,5 +1,9 @@
 #!/bin/sh

+if [ "${CGIT_TEST_NO_GIT_VERSION}" = "YesPlease" ]; then
+	exit 0
+fi
+
 test_description='Check Git version is correct'
 CGIT_TEST_NO_CREATE_REPOS=YesPlease
 . ./setup.sh
@ -29,11 +33,11 @@ test_expect_success 'test submodule version matches Makefile' '
 	else
 		(
 			cd ../.. &&
-			sm_sha1=$(git ls-files --stage -- git |
+			sm_oid=$(git ls-files --stage -- git |
 				sed -e "s/^[0-9]* \\([0-9a-f]*\\) [0-9]	.*$/\\1/") &&
 			cd git &&
-			git describe --match "v[0-9]*" $sm_sha1
-		) | sed -e "s/^v//" >sm_version &&
+			git describe --match "v[0-9]*" $sm_oid
+		) | sed -e "s/^v//" -e "s/-/./" >sm_version &&
 		test_cmp sm_version makefile_version
 	fi
 '
--- a/tests/t0105-commit.sh
+++ b/tests/t0105-commit.sh
@ -25,7 +25,7 @@ test_expect_success 'get root commit' '
 '

 test_expect_success 'root commit contains diffstat' '
-	grep "<a href=./foo/diff/file-1.id=[0-9a-f]\{40\}.>file-1</a>" tmp
+	grep "<a href=./foo/diff/file-1.id=[0-9a-f]\{40,64\}.>file-1</a>" tmp
 '

 test_expect_success 'root commit contains diff' '
--- a/tests/t0107-snapshot.sh
+++ b/tests/t0107-snapshot.sh
@ -25,7 +25,7 @@ test_expect_success 'verify gzip format' '

 test_expect_success 'untar' '
 	rm -rf master &&
-	tar -xzf master.tar.gz
+	gzip -dc master.tar.gz | tar -xf -
 '

 test_expect_success 'count files' '
@ -38,6 +38,129 @@ test_expect_success 'verify untarred file-5' '
 	test_line_count = 1 master/file-5
 '

+if test -n "$(which lzip 2>/dev/null)"; then
+	test_set_prereq LZIP
+else
+	say 'Skipping LZIP validation tests: lzip not found'
+fi
+
+test_expect_success LZIP 'get foo/snapshot/master.tar.lz' '
+	cgit_url "foo/snapshot/master.tar.lz" >tmp
+'
+
+test_expect_success LZIP 'check html headers' '
+	head -n 1 tmp |
+	grep "Content-Type: application/x-lzip" &&
+
+	head -n 2 tmp |
+	grep "Content-Disposition: inline; filename=.master.tar.lz."
+'
+
+test_expect_success LZIP 'strip off the header lines' '
+	strip_headers <tmp >master.tar.lz
+'
+
+test_expect_success LZIP 'verify lzip format' '
+	lzip --test master.tar.lz
+'
+
+test_expect_success LZIP 'untar' '
+	rm -rf master &&
+	lzip -dc master.tar.lz | tar -xf -
+'
+
+test_expect_success LZIP 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
+'
+
+test_expect_success LZIP 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
+'
+
+if test -n "$(which xz 2>/dev/null)"; then
+	test_set_prereq XZ
+else
+	say 'Skipping XZ validation tests: xz not found'
+fi
+
+test_expect_success XZ 'get foo/snapshot/master.tar.xz' '
+	cgit_url "foo/snapshot/master.tar.xz" >tmp
+'
+
+test_expect_success XZ 'check html headers' '
+	head -n 1 tmp |
+	grep "Content-Type: application/x-xz" &&
+
+	head -n 2 tmp |
+	grep "Content-Disposition: inline; filename=.master.tar.xz."
+'
+
+test_expect_success XZ 'strip off the header lines' '
+	strip_headers <tmp >master.tar.xz
+'
+
+test_expect_success XZ 'verify xz format' '
+	xz --test master.tar.xz
+'
+
+test_expect_success XZ 'untar' '
+	rm -rf master &&
+	xz -dc master.tar.xz | tar -xf -
+'
+
+test_expect_success XZ 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
+'
+
+test_expect_success XZ 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
+'
+
+if test -n "$(which zstd 2>/dev/null)"; then
+	test_set_prereq ZSTD
+else
+	say 'Skipping ZSTD validation tests: zstd not found'
+fi
+
+test_expect_success ZSTD 'get foo/snapshot/master.tar.zst' '
+	cgit_url "foo/snapshot/master.tar.zst" >tmp
+'
+
+test_expect_success ZSTD 'check html headers' '
+	head -n 1 tmp |
+	grep "Content-Type: application/x-zstd" &&
+
+	head -n 2 tmp |
+	grep "Content-Disposition: inline; filename=.master.tar.zst."
+'
+
+test_expect_success ZSTD 'strip off the header lines' '
+	strip_headers <tmp >master.tar.zst
+'
+
+test_expect_success ZSTD 'verify zstd format' '
+	zstd --test master.tar.zst
+'
+
+test_expect_success ZSTD 'untar' '
+	rm -rf master &&
+	zstd -dc master.tar.zst | tar -xf -
+'
+
+test_expect_success ZSTD 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
+'
+
+test_expect_success ZSTD 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
+'
+
 test_expect_success 'get foo/snapshot/master.zip' '
 	cgit_url "foo/snapshot/master.zip" >tmp
 '
--- a/tests/t0109-gitconfig.sh
+++ b/tests/t0109-gitconfig.sh
@ -9,17 +9,23 @@ test -n "$(which strace 2>/dev/null)" || {
 	exit
 }

+strace true 2>/dev/null || {
+	skip_all='Skipping access validation tests: strace not functional'
+	test_done
+	exit
+}
+
 test_no_home_access () {
-	non_existant_path="/path/to/some/place/that/does/not/possibly/exist"
-	while test -d "$non_existant_path"; do
-		non_existant_path="$non_existant_path/$(date +%N)"
+	non_existent_path="/path/to/some/place/that/does/not/possibly/exist"
+	while test -d "$non_existent_path"; do
+		non_existent_path="$non_existent_path/$(date +%N)"
 	done &&
 	strace \
-		-E HOME="$non_existant_path" \
+		-E HOME="$non_existent_path" \
 		-E CGIT_CONFIG="$PWD/cgitrc" \
 		-E QUERY_STRING="url=$1" \
 		-e access -f -o strace.out cgit &&
-	test_must_fail grep "$non_existant_path" strace.out
+	! grep "$non_existent_path" strace.out
 }

 test_no_home_access_success() {
--- a/tests/t0110-rawdiff.sh
+++ b/tests/t0110-rawdiff.sh
@ -8,8 +8,8 @@ test_expect_success 'generate foo/rawdiff' '
 '

 test_expect_success 'compare with output of git-diff(1)' '
-	git --git-dir="$PWD/repos/foo/.git" diff HEAD^.. >tmp2
-	sed "1,4d" tmp >tmp_
+	git --git-dir="$PWD/repos/foo/.git" diff HEAD^.. >tmp2 &&
+	sed "1,4d" tmp >tmp_ &&
 	cmp tmp_ tmp2
 '

@ -22,20 +22,20 @@ test_expect_success 'generate diff for initial commit' '
 '

 test_expect_success 'compare with output of git-diff-tree(1)' '
-	git --git-dir="$PWD/repos/foo/.git" diff-tree -p --no-commit-id --root "$root" >tmp2
-	sed "1,4d" tmp >tmp_
+	git --git-dir="$PWD/repos/foo/.git" diff-tree -p --no-commit-id --root "$root" >tmp2 &&
+	sed "1,4d" tmp >tmp_ &&
 	cmp tmp_ tmp2
 '

 test_expect_success 'generate diff for multiple commits' '
-	id=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD)
-	id2=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD~3)
+	id=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD) &&
+	id2=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD~3) &&
 	cgit_query "url=foo/rawdiff&id=$id&id2=$id2" >tmp
 '

 test_expect_success 'compare with output of git-diff(1)' '
-	git --git-dir="$PWD/repos/foo/.git" diff HEAD~3..HEAD >tmp2
-	sed "1,4d" tmp >tmp_
+	git --git-dir="$PWD/repos/foo/.git" diff HEAD~3..HEAD >tmp2 &&
+	sed "1,4d" tmp >tmp_ &&
 	cmp tmp_ tmp2
 '

--- a/ui-atom.c
+++ b/ui-atom.c
@ -19,13 +19,14 @@ static void add_entry(struct commit *commit, const char *host)
 	struct commitinfo *info;

 	info = cgit_parse_commit(commit);
-	hex = sha1_to_hex(commit->object.sha1);
+	hex = oid_to_hex(&commit->object.oid);
 	html("<entry>\n");
 	html("<title>");
 	html_txt(info->subject);
 	html("</title>\n");
 	html("<updated>");
-	cgit_print_date(info->committer_date, FMT_ATOMDATE, 0);
+	html_txt(show_date(info->committer_date, 0,
+                    date_mode_from_type(DATE_ISO8601_STRICT)));
 	html("</updated>\n");
 	html("<author>\n");
 	if (info->author) {
@ -50,41 +51,41 @@ static void add_entry(struct commit *commit, const char *host)
 	}
 	html("</author>\n");
 	html("<published>");
-	cgit_print_date(info->author_date, FMT_ATOMDATE, 0);
+	html_txt(show_date(info->author_date, 0,
+                    date_mode_from_type(DATE_ISO8601_STRICT)));
 	html("</published>\n");
 	if (host) {
+		char *pageurl;
 		html("<link rel='alternate' type='text/html' href='");
 		html(cgit_httpscheme());
 		html_attr(host);
-		html_attr(cgit_pageurl(ctx.repo->url, "commit", NULL));
+		pageurl = cgit_pageurl(ctx.repo->url, "commit", NULL);
+		html_attr(pageurl);
 		if (ctx.cfg.virtual_root)
 			delim = '?';
-		htmlf("%cid=%s", delim, hex);
+		html_attrf("%cid=%s", delim, hex);
 		html("'/>\n");
+		free(pageurl);
 	}
-	htmlf("<id>%s</id>\n", hex);
+	html("<id>");
+	html_txtf("urn:%s:%s", the_hash_algo->name, hex);
+	html("</id>\n");
 	html("<content type='text'>\n");
 	html_txt(info->msg);
 	html("</content>\n");
-	html("<content type='xhtml'>\n");
-	html("<div xmlns='http://www.w3.org/1999/xhtml'>\n");
-	html("<pre>\n");
-	html_txt(info->msg);
-	html("</pre>\n");
-	html("</div>\n");
-	html("</content>\n");
 	html("</entry>\n");
 	cgit_free_commitinfo(info);
 }


-void cgit_print_atom(char *tip, char *path, int max_count)
+void cgit_print_atom(char *tip, const char *path, int max_count)
 {
-	const char *host;
+	char *host;
 	const char *argv[] = {NULL, tip, NULL, NULL, NULL};
 	struct commit *commit;
 	struct rev_info rev;
 	int argc = 2;
+	bool first = true;

 	if (ctx.qry.show_all)
 		argv[1] = "--all";
@ -125,17 +126,32 @@ void cgit_print_atom(char *tip, char *path, int max_count)
 	html_txt(ctx.repo->desc);
 	html("</subtitle>\n");
 	if (host) {
+		char *fullurl = cgit_currentfullurl();
+		char *repourl = cgit_repourl(ctx.repo->url);
+		html("<id>");
+		html_txtf("%s%s%s", cgit_httpscheme(), host, fullurl);
+		html("</id>\n");
+		html("<link rel='self' href='");
+		html_attrf("%s%s%s", cgit_httpscheme(), host, fullurl);
+		html("'/>\n");
 		html("<link rel='alternate' type='text/html' href='");
-		html(cgit_httpscheme());
-		html_attr(host);
-		html_attr(cgit_repourl(ctx.repo->url));
+		html_attrf("%s%s%s", cgit_httpscheme(), host, repourl);
 		html("'/>\n");
+		free(fullurl);
+		free(repourl);
 	}
 	while ((commit = get_revision(&rev)) != NULL) {
+		if (first) {
+			html("<updated>");
+			html_txt(show_date(commit->date, 0,
+				date_mode_from_type(DATE_ISO8601_STRICT)));
+			html("</updated>\n");
+			first = false;
+		}
 		add_entry(commit, host);
-		free_commit_buffer(commit);
-		free_commit_list(commit->parents);
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 	html("</feed>\n");
+	free(host);
 }
--- a/ui-atom.h
+++ b/ui-atom.h
@ -1,6 +1,6 @@
 #ifndef UI_ATOM_H
 #define UI_ATOM_H

-extern void cgit_print_atom(char *tip, char *path, int max_count);
+extern void cgit_print_atom(char *tip, const char *path, int max_count);

 #endif
--- a/ui-blame.c
+++ b/ui-blame.c
@ -0,0 +1,315 @@
+/* ui-blame.c: functions for blame output
+ *
+ * Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+#include "ui-blame.h"
+#include "html.h"
+#include "ui-shared.h"
+#include "strvec.h"
+#include "blame.h"
+
+
+static char *emit_suspect_detail(struct blame_origin *suspect)
+{
+	struct commitinfo *info;
+	struct strbuf detail = STRBUF_INIT;
+
+	info = cgit_parse_commit(suspect->commit);
+
+	strbuf_addf(&detail, "author  %s", info->author);
+	if (!ctx.cfg.noplainemail)
+		strbuf_addf(&detail, " %s", info->author_email);
+	strbuf_addf(&detail, "  %s\n",
+		    show_date(info->author_date, info->author_tz,
+				    cgit_date_mode(DATE_ISO8601)));
+
+	strbuf_addf(&detail, "committer  %s", info->committer);
+	if (!ctx.cfg.noplainemail)
+		strbuf_addf(&detail, " %s", info->committer_email);
+	strbuf_addf(&detail, "  %s\n\n",
+		    show_date(info->committer_date, info->committer_tz,
+				    cgit_date_mode(DATE_ISO8601)));
+
+	strbuf_addstr(&detail, info->subject);
+
+	cgit_free_commitinfo(info);
+	return strbuf_detach(&detail, NULL);
+}
+
+static void emit_blame_entry_hash(struct blame_entry *ent)
+{
+	struct blame_origin *suspect = ent->suspect;
+	struct object_id *oid = &suspect->commit->object.oid;
+	unsigned long line = 0;
+
+	char *detail = emit_suspect_detail(suspect);
+	html("<span class='oid'>");
+	cgit_commit_link(find_unique_abbrev(oid, DEFAULT_ABBREV), detail,
+			 NULL, ctx.qry.head, oid_to_hex(oid), suspect->path);
+	html("</span>");
+	free(detail);
+
+	if (!parse_commit(suspect->commit) && suspect->commit->parents) {
+		struct commit *parent = suspect->commit->parents->item;
+
+		html(" ");
+		cgit_blame_link("^", "Blame the previous revision", NULL,
+				ctx.qry.head, oid_to_hex(&parent->object.oid),
+				suspect->path);
+	}
+
+	while (line++ < ent->num_lines)
+		html("\n");
+}
+
+static void emit_blame_entry_linenumber(struct blame_entry *ent)
+{
+	const char *numberfmt = "<a id='n%1$d' href='#n%1$d'>%1$d</a>\n";
+
+	unsigned long lineno = ent->lno;
+	while (lineno < ent->lno + ent->num_lines)
+		htmlf(numberfmt, ++lineno);
+}
+
+static void emit_blame_entry_line_background(struct blame_scoreboard *sb,
+					     struct blame_entry *ent)
+{
+	unsigned long line;
+	size_t len, maxlen = 2;
+	const char* pos, *endpos;
+
+	for (line = ent->lno; line < ent->lno + ent->num_lines; line++) {
+		html("\n");
+		pos = blame_nth_line(sb, line);
+		endpos = blame_nth_line(sb, line + 1);
+		len = 0;
+		while (pos < endpos) {
+			len++;
+			if (*pos++ == '\t')
+				len = (len + 7) & ~7;
+		}
+		if (len > maxlen)
+			maxlen = len;
+	}
+
+	for (len = 0; len < maxlen - 1; len++)
+		html(" ");
+}
+
+struct walk_tree_context {
+	char *curr_rev;
+	int match_baselen;
+	int state;
+};
+
+static void print_object(const struct object_id *oid, const char *path,
+			 const char *basename, const char *rev)
+{
+	enum object_type type;
+	char *buf;
+	unsigned long size;
+	struct strvec rev_argv = STRVEC_INIT;
+	struct rev_info revs;
+	struct blame_scoreboard sb;
+	struct blame_origin *o;
+	struct blame_entry *ent = NULL;
+
+	type = oid_object_info(the_repository, oid, &size);
+	if (type == OBJ_BAD) {
+		cgit_print_error_page(404, "Not found", "Bad object name: %s",
+				      oid_to_hex(oid));
+		return;
+	}
+
+	buf = read_object_file(oid, &type, &size);
+	if (!buf) {
+		cgit_print_error_page(500, "Internal server error",
+			"Error reading object %s", oid_to_hex(oid));
+		return;
+	}
+
+	strvec_push(&rev_argv, "blame");
+	strvec_push(&rev_argv, rev);
+	init_revisions(&revs, NULL);
+	revs.diffopt.flags.allow_textconv = 1;
+	setup_revisions(rev_argv.nr, rev_argv.v, &revs, NULL);
+	init_scoreboard(&sb);
+	sb.revs = &revs;
+	sb.repo = the_repository;
+	sb.path = path;
+	setup_scoreboard(&sb, &o);
+	o->suspects = blame_entry_prepend(NULL, 0, sb.num_lines, o);
+	prio_queue_put(&sb.commits, o->commit);
+	blame_origin_decref(o);
+	sb.ent = NULL;
+	sb.path = path;
+	assign_blame(&sb, 0);
+	blame_sort_final(&sb);
+	blame_coalesce(&sb);
+
+	cgit_set_title_from_path(path);
+
+	cgit_print_layout_start();
+	htmlf("blob: %s (", oid_to_hex(oid));
+	cgit_plain_link("plain", NULL, NULL, ctx.qry.head, rev, path);
+	html(") (");
+	cgit_tree_link("tree", NULL, NULL, ctx.qry.head, rev, path);
+	html(")\n");
+
+	if (buffer_is_binary(buf, size)) {
+		html("<div class='error'>blob is binary.</div>");
+		goto cleanup;
+	}
+	if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
+		htmlf("<div class='error'>blob size (%ldKB)"
+		      " exceeds display size limit (%dKB).</div>",
+		      size / 1024, ctx.cfg.max_blob_size);
+		goto cleanup;
+	}
+
+	html("<table class='blame blob'>\n<tr>\n");
+
+	/* Commit hashes */
+	html("<td class='hashes'>");
+	for (ent = sb.ent; ent; ent = ent->next) {
+		html("<div class='alt'><pre>");
+		emit_blame_entry_hash(ent);
+		html("</pre></div>");
+	}
+	html("</td>\n");
+
+	/* Line numbers */
+	if (ctx.cfg.enable_tree_linenumbers) {
+		html("<td class='linenumbers'>");
+		for (ent = sb.ent; ent; ent = ent->next) {
+			html("<div class='alt'><pre>");
+			emit_blame_entry_linenumber(ent);
+			html("</pre></div>");
+		}
+		html("</td>\n");
+	}
+
+	html("<td class='lines'><div>");
+
+	/* Colored bars behind lines */
+	html("<div>");
+	for (ent = sb.ent; ent; ) {
+		struct blame_entry *e = ent->next;
+		html("<div class='alt'><pre>");
+		emit_blame_entry_line_background(&sb, ent);
+		html("</pre></div>");
+		free(ent);
+		ent = e;
+	}
+	html("</div>");
+
+	free((void *)sb.final_buf);
+
+	/* Lines */
+	html("<pre><code>");
+	if (ctx.repo->source_filter) {
+		char *filter_arg = xstrdup(basename);
+		cgit_open_filter(ctx.repo->source_filter, filter_arg);
+		html_raw(buf, size);
+		cgit_close_filter(ctx.repo->source_filter);
+		free(filter_arg);
+	} else {
+		html_txt(buf);
+	}
+	html("</code></pre>");
+
+	html("</div></td>\n");
+
+	html("</tr>\n</table>\n");
+
+	cgit_print_layout_end();
+
+cleanup:
+	free(buf);
+}
+
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+		     const char *pathname, unsigned mode, void *cbdata)
+{
+	struct walk_tree_context *walk_tree_ctx = cbdata;
+
+	if (base->len == walk_tree_ctx->match_baselen) {
+		if (S_ISREG(mode)) {
+			struct strbuf buffer = STRBUF_INIT;
+			strbuf_addbuf(&buffer, base);
+			strbuf_addstr(&buffer, pathname);
+			print_object(oid, buffer.buf, pathname,
+				     walk_tree_ctx->curr_rev);
+			strbuf_release(&buffer);
+			walk_tree_ctx->state = 1;
+		} else if (S_ISDIR(mode)) {
+			walk_tree_ctx->state = 2;
+		}
+	} else if (base->len < INT_MAX
+			&& (int)base->len > walk_tree_ctx->match_baselen) {
+		walk_tree_ctx->state = 2;
+	} else if (S_ISDIR(mode)) {
+		return READ_TREE_RECURSIVE;
+	}
+	return 0;
+}
+
+static int basedir_len(const char *path)
+{
+	char *p = strrchr(path, '/');
+	if (p)
+		return p - path + 1;
+	return 0;
+}
+
+void cgit_print_blame(void)
+{
+	const char *rev = ctx.qry.oid;
+	struct object_id oid;
+	struct commit *commit;
+	struct pathspec_item path_items = {
+		.match = ctx.qry.path,
+		.len = ctx.qry.path ? strlen(ctx.qry.path) : 0
+	};
+	struct pathspec paths = {
+		.nr = 1,
+		.items = &path_items
+	};
+	struct walk_tree_context walk_tree_ctx = {
+		.state = 0
+	};
+
+	if (!rev)
+		rev = ctx.qry.head;
+
+	if (get_oid(rev, &oid)) {
+		cgit_print_error_page(404, "Not found",
+			"Invalid revision name: %s", rev);
+		return;
+	}
+	commit = lookup_commit_reference(the_repository, &oid);
+	if (!commit || parse_commit(commit)) {
+		cgit_print_error_page(404, "Not found",
+			"Invalid commit reference: %s", rev);
+		return;
+	}
+
+	walk_tree_ctx.curr_rev = xstrdup(rev);
+	walk_tree_ctx.match_baselen = (path_items.match) ?
+				       basedir_len(path_items.match) : -1;
+
+	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+		  &paths, walk_tree, &walk_tree_ctx);
+	if (!walk_tree_ctx.state)
+		cgit_print_error_page(404, "Not found", "Not found");
+	else if (walk_tree_ctx.state == 2)
+		cgit_print_error_page(404, "No blame for folders",
+			"Blame is not available for folders.");
+
+	free(walk_tree_ctx.curr_rev);
+}
--- a/ui-blame.h
+++ b/ui-blame.h
@ -0,0 +1,6 @@
+#ifndef UI_BLAME_H
+#define UI_BLAME_H
+
+extern void cgit_print_blame(void);
+
+#endif /* UI_BLAME_H */
--- a/ui-blob.c
+++ b/ui-blob.c
@ -13,13 +13,13 @@

 struct walk_tree_context {
 	const char *match_path;
-	unsigned char *matched_sha1;
+	struct object_id *matched_oid;
 	unsigned int found_path:1;
 	unsigned int file_only:1;
 };

-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;

@ -28,17 +28,17 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
 	if (strncmp(base->buf, walk_tree_ctx->match_path, base->len)
 		|| strcmp(walk_tree_ctx->match_path + base->len, pathname))
 		return READ_TREE_RECURSIVE;
-	memmove(walk_tree_ctx->matched_sha1, sha1, 20);
+	oidcpy(walk_tree_ctx->matched_oid, oid);
 	walk_tree_ctx->found_path = 1;
 	return 0;
 }

 int cgit_ref_path_exists(const char *path, const char *ref, int file_only)
 {
-	unsigned char sha1[20];
+	struct object_id oid;
 	unsigned long size;
 	struct pathspec_item path_items = {
-		.match = path,
+		.match = xstrdup(path),
 		.len = strlen(path)
 	};
 	struct pathspec paths = {
@ -47,22 +47,27 @@ int cgit_ref_path_exists(const char *path, const char *ref, int file_only)
 	};
 	struct walk_tree_context walk_tree_ctx = {
 		.match_path = path,
-		.matched_sha1 = sha1,
+		.matched_oid = &oid,
 		.found_path = 0,
 		.file_only = file_only
 	};

-	if (get_sha1(ref, sha1))
-		return 0;
-	if (sha1_object_info(sha1, &size) != OBJ_COMMIT)
-		return 0;
-	read_tree_recursive(lookup_commit_reference(sha1)->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	if (get_oid(ref, &oid))
+		goto done;
+	if (oid_object_info(the_repository, &oid, &size) != OBJ_COMMIT)
+		goto done;
+	read_tree(the_repository,
+		  repo_get_commit_tree(the_repository, lookup_commit_reference(the_repository, &oid)),
+		  &paths, walk_tree, &walk_tree_ctx);
+
+done:
+	free(path_items.match);
 	return walk_tree_ctx.found_path;
 }

 int cgit_print_file(char *path, const char *head, int file_only)
 {
-	unsigned char sha1[20];
+	struct object_id oid;
 	enum object_type type;
 	char *buf;
 	unsigned long size;
@ -77,34 +82,36 @@ int cgit_print_file(char *path, const char *head, int file_only)
 	};
 	struct walk_tree_context walk_tree_ctx = {
 		.match_path = path,
-		.matched_sha1 = sha1,
+		.matched_oid = &oid,
 		.found_path = 0,
 		.file_only = file_only
 	};

-	if (get_sha1(head, sha1))
+	if (get_oid(head, &oid))
 		return -1;
-	type = sha1_object_info(sha1, &size);
-	if (type == OBJ_COMMIT && path) {
-		commit = lookup_commit_reference(sha1);
-		read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	type = oid_object_info(the_repository, &oid, &size);
+	if (type == OBJ_COMMIT) {
+		commit = lookup_commit_reference(the_repository, &oid);
+		read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+			  &paths, walk_tree, &walk_tree_ctx);
 		if (!walk_tree_ctx.found_path)
 			return -1;
-		type = sha1_object_info(sha1, &size);
+		type = oid_object_info(the_repository, &oid, &size);
 	}
 	if (type == OBJ_BAD)
 		return -1;
-	buf = read_sha1_file(sha1, &type, &size);
+	buf = read_object_file(&oid, &type, &size);
 	if (!buf)
 		return -1;
 	buf[size] = '\0';
 	html_raw(buf, size);
+	free(buf);
 	return 0;
 }

 void cgit_print_blob(const char *hex, char *path, const char *head, int file_only)
 {
-	unsigned char sha1[20];
+	struct object_id oid;
 	enum object_type type;
 	char *buf;
 	unsigned long size;
@ -119,51 +126,57 @@ void cgit_print_blob(const char *hex, char *path, const char *head, int file_onl
 	};
 	struct walk_tree_context walk_tree_ctx = {
 		.match_path = path,
-		.matched_sha1 = sha1,
+		.matched_oid = &oid,
 		.found_path = 0,
 		.file_only = file_only
 	};

 	if (hex) {
-		if (get_sha1_hex(hex, sha1)) {
-			cgit_print_error("Bad hex value: %s", hex);
+		if (get_oid_hex(hex, &oid)) {
+			cgit_print_error_page(400, "Bad request",
+					"Bad hex value: %s", hex);
 			return;
 		}
 	} else {
-		if (get_sha1(head, sha1)) {
-			cgit_print_error("Bad ref: %s", head);
+		if (get_oid(head, &oid)) {
+			cgit_print_error_page(404, "Not found",
+					"Bad ref: %s", head);
 			return;
 		}
 	}

-	type = sha1_object_info(sha1, &size);
+	type = oid_object_info(the_repository, &oid, &size);

 	if ((!hex) && type == OBJ_COMMIT && path) {
-		commit = lookup_commit_reference(sha1);
-		read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
-		type = sha1_object_info(sha1,&size);
+		commit = lookup_commit_reference(the_repository, &oid);
+		read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+			  &paths, walk_tree, &walk_tree_ctx);
+		type = oid_object_info(the_repository, &oid, &size);
 	}

 	if (type == OBJ_BAD) {
-		cgit_print_error("Bad object name: %s", hex);
+		cgit_print_error_page(404, "Not found",
+				"Bad object name: %s", hex);
 		return;
 	}

-	buf = read_sha1_file(sha1, &type, &size);
+	buf = read_object_file(&oid, &type, &size);
 	if (!buf) {
-		cgit_print_error("Error reading object %s", hex);
+		cgit_print_error_page(500, "Internal server error",
+				"Error reading object %s", hex);
 		return;
 	}

 	buf[size] = '\0';
-	ctx.page.mimetype = ctx.qry.mimetype;
-	if (!ctx.page.mimetype) {
-		if (buffer_is_binary(buf, size))
-			ctx.page.mimetype = "application/octet-stream";
-		else
-			ctx.page.mimetype = "text/plain";
-	}
+	if (buffer_is_binary(buf, size))
+		ctx.page.mimetype = "application/octet-stream";
+	else
+		ctx.page.mimetype = "text/plain";
 	ctx.page.filename = path;
+
+	html("X-Content-Type-Options: nosniff\n");
+	html("Content-Security-Policy: default-src 'none'\n");
 	cgit_print_http_headers();
 	html_raw(buf, size);
+	free(buf);
 }
--- a/ui-clone.c
+++ b/ui-clone.c
@ -11,20 +11,22 @@
 #include "ui-clone.h"
 #include "html.h"
 #include "ui-shared.h"
+#include "packfile.h"
+#include "object-store.h"

-static int print_ref_info(const char *refname, const unsigned char *sha1,
+static int print_ref_info(const char *refname, const struct object_id *oid,
                          int flags, void *cb_data)
 {
 	struct object *obj;

-	if (!(obj = parse_object(sha1)))
+	if (!(obj = parse_object(the_repository, oid)))
 		return 0;

-	htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
+	htmlf("%s\t%s\n", oid_to_hex(oid), refname);
 	if (obj->type == OBJ_TAG) {
-		if (!(obj = deref_tag(obj, refname, 0)))
+		if (!(obj = deref_tag(the_repository, obj, refname, 0)))
 			return 0;
-		htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
+		htmlf("%s\t%s^{}\n", oid_to_hex(&obj->oid), refname);
 	}
 	return 0;
 }
@ -37,8 +39,8 @@ static void print_pack_info(void)
 	ctx.page.mimetype = "text/plain";
 	ctx.page.filename = "objects/info/packs";
 	cgit_print_http_headers();
-	prepare_packed_git();
-	for (pack = packed_git; pack; pack = pack->next) {
+	reprepare_packed_git(the_repository);
+	for (pack = get_packed_git(the_repository); pack; pack = pack->next) {
 		if (pack->pack_local) {
 			offset = strrchr(pack->pack_name, '/');
 			if (offset && offset[1] != '\0')
@ -50,20 +52,20 @@ static void print_pack_info(void)
 	}
 }

-static void send_file(char *path)
+static void send_file(const char *path)
 {
 	struct stat st;

 	if (stat(path, &st)) {
 		switch (errno) {
 		case ENOENT:
-			html_status(404, "Not found", 0);
+			cgit_print_error_page(404, "Not found", "Not found");
 			break;
 		case EACCES:
-			html_status(403, "Forbidden", 0);
+			cgit_print_error_page(403, "Forbidden", "Forbidden");
 			break;
 		default:
-			html_status(400, "Bad request", 0);
+			cgit_print_error_page(400, "Bad request", "Bad request");
 		}
 		return;
 	}
@ -78,7 +80,7 @@ static void send_file(char *path)
 void cgit_clone_info(void)
 {
 	if (!ctx.qry.path || strcmp(ctx.qry.path, "refs")) {
-		html_status(400, "Bad request", 0);
+		cgit_print_error_page(400, "Bad request", "Bad request");
 		return;
 	}

@ -90,17 +92,32 @@ void cgit_clone_info(void)

 void cgit_clone_objects(void)
 {
-	if (!ctx.qry.path) {
-		html_status(400, "Bad request", 0);
-		return;
-	}
+	char *p;
+
+	if (!ctx.qry.path)
+		goto err;

 	if (!strcmp(ctx.qry.path, "info/packs")) {
 		print_pack_info();
 		return;
 	}

+	/* Avoid directory traversal by forbidding "..", but also work around
+	 * other funny business by just specifying a fairly strict format. For
+	 * example, now we don't have to stress out about the Cygwin port.
+	 */
+	for (p = ctx.qry.path; *p; ++p) {
+		if (*p == '.' && *(p + 1) == '.')
+			goto err;
+		if (!isalnum(*p) && *p != '/' && *p != '.' && *p != '-')
+			goto err;
+	}
+
 	send_file(git_path("objects/%s", ctx.qry.path));
+	return;
+
+err:
+	cgit_print_error_page(400, "Bad request", "Bad request");
 }

 void cgit_clone_head(void)
--- a/ui-commit.c
+++ b/ui-commit.c
@ -19,28 +19,32 @@ void cgit_print_commit(char *hex, const char *prefix)
 	struct commitinfo *info, *parent_info;
 	struct commit_list *p;
 	struct strbuf notes = STRBUF_INIT;
-	unsigned char sha1[20];
+	struct object_id oid;
 	char *tmp, *tmp2;
 	int parents = 0;

 	if (!hex)
 		hex = ctx.qry.head;

-	if (get_sha1(hex, sha1)) {
-		cgit_print_error("Bad object id: %s", hex);
+	if (get_oid(hex, &oid)) {
+		cgit_print_error_page(400, "Bad request",
+				"Bad object id: %s", hex);
 		return;
 	}
-	commit = lookup_commit_reference(sha1);
+	commit = lookup_commit_reference(the_repository, &oid);
 	if (!commit) {
-		cgit_print_error("Bad commit reference: %s", hex);
+		cgit_print_error_page(404, "Not found",
+				"Bad commit reference: %s", hex);
 		return;
 	}
 	info = cgit_parse_commit(commit);

-	format_display_notes(sha1, &notes, PAGE_ENCODING, 0);
+	format_display_notes(&oid, &notes, PAGE_ENCODING, 1);

-	load_ref_decorations(DECORATE_FULL_REFS);
+	load_ref_decorations(NULL, DECORATE_FULL_REFS);

+	ctx.page.title = fmtalloc("%s - %s", info->subject, ctx.page.title);
+	cgit_print_layout_start();
 	cgit_print_diff_ctrls();
 	html("<table summary='commit info' class='commit-info'>\n");
 	html("<tr><th>author</th><td>");
@ -52,7 +56,8 @@ void cgit_print_commit(char *hex, const char *prefix)
 	}
 	cgit_close_filter(ctx.repo->email_filter);
 	html("</td><td class='right'>");
-	cgit_print_date(info->author_date, FMT_LONGDATE, ctx.cfg.local_time);
+	html_txt(show_date(info->author_date, info->author_tz,
+				cgit_date_mode(DATE_ISO8601)));
 	html("</td></tr>\n");
 	html("<tr><th>committer</th><td>");
 	cgit_open_filter(ctx.repo->email_filter, info->committer_email, "commit");
@ -63,17 +68,18 @@ void cgit_print_commit(char *hex, const char *prefix)
 	}
 	cgit_close_filter(ctx.repo->email_filter);
 	html("</td><td class='right'>");
-	cgit_print_date(info->committer_date, FMT_LONGDATE, ctx.cfg.local_time);
+	html_txt(show_date(info->committer_date, info->committer_tz,
+				cgit_date_mode(DATE_ISO8601)));
 	html("</td></tr>\n");
-	html("<tr><th>commit</th><td colspan='2' class='sha1'>");
-	tmp = sha1_to_hex(commit->object.sha1);
+	html("<tr><th>commit</th><td colspan='2' class='oid'>");
+	tmp = oid_to_hex(&commit->object.oid);
 	cgit_commit_link(tmp, NULL, NULL, ctx.qry.head, tmp, prefix);
 	html(" (");
 	cgit_patch_link("patch", NULL, NULL, NULL, tmp, prefix);
 	html(")</td></tr>\n");
-	html("<tr><th>tree</th><td colspan='2' class='sha1'>");
+	html("<tr><th>tree</th><td colspan='2' class='oid'>");
 	tmp = xstrdup(hex);
-	cgit_tree_link(sha1_to_hex(commit->tree->object.sha1), NULL, NULL,
+	cgit_tree_link(oid_to_hex(get_commit_tree_oid(commit)), NULL, NULL,
 		       ctx.qry.head, tmp, NULL);
 	if (prefix) {
 		html(" /");
@ -82,7 +88,7 @@ void cgit_print_commit(char *hex, const char *prefix)
 	free(tmp);
 	html("</td></tr>\n");
 	for (p = commit->parents; p; p = p->next) {
-		parent = lookup_commit_reference(p->item->object.sha1);
+		parent = lookup_commit_reference(the_repository, &p->item->object.oid);
 		if (!parent) {
 			html("<tr><td colspan='3'>");
 			cgit_print_error("Error reading parent commit");
@ -90,8 +96,8 @@ void cgit_print_commit(char *hex, const char *prefix)
 			continue;
 		}
 		html("<tr><th>parent</th>"
-		     "<td colspan='2' class='sha1'>");
-		tmp = tmp2 = sha1_to_hex(p->item->object.sha1);
+		     "<td colspan='2' class='oid'>");
+		tmp = tmp2 = oid_to_hex(&p->item->object.oid);
 		if (ctx.repo->enable_subject_links) {
 			parent_info = cgit_parse_commit(parent);
 			tmp2 = parent_info->subject;
@ -99,14 +105,13 @@ void cgit_print_commit(char *hex, const char *prefix)
 		cgit_commit_link(tmp2, NULL, NULL, ctx.qry.head, tmp, prefix);
 		html(" (");
 		cgit_diff_link("diff", NULL, NULL, ctx.qry.head, hex,
-			       sha1_to_hex(p->item->object.sha1), prefix);
+			       oid_to_hex(&p->item->object.oid), prefix);
 		html(")</td></tr>");
 		parents++;
 	}
 	if (ctx.repo->snapshots) {
-		html("<tr><th>download</th><td colspan='2' class='sha1'>");
-		cgit_print_snapshot_links(ctx.qry.repo, ctx.qry.head,
-					  hex, ctx.repo->snapshots);
+		html("<tr><th>download</th><td colspan='2' class='oid'>");
+		cgit_print_snapshot_links(ctx.repo, hex, "<br/>");
 		html("</td></tr>");
 	}
 	html("</table>\n");
@ -132,11 +137,12 @@ void cgit_print_commit(char *hex, const char *prefix)
 	}
 	if (parents < 3) {
 		if (parents)
-			tmp = sha1_to_hex(commit->parents->item->object.sha1);
+			tmp = oid_to_hex(&commit->parents->item->object.oid);
 		else
 			tmp = NULL;
-		cgit_print_diff(ctx.qry.sha1, tmp, prefix, 0, 0);
+		cgit_print_diff(ctx.qry.oid, tmp, prefix, 0, 0);
 	}
 	strbuf_release(&notes);
 	cgit_free_commitinfo(info);
+	cgit_print_layout_end();
 }
--- a/ui-diff.c
+++ b/ui-diff.c
@ -12,8 +12,8 @@
 #include "ui-shared.h"
 #include "ui-ssdiff.h"

-unsigned char old_rev_sha1[20];
-unsigned char new_rev_sha1[20];
+struct object_id old_rev_oid[1];
+struct object_id new_rev_oid[1];

 static int files, slots;
 static int total_adds, total_rems, max_changes;
@ -21,8 +21,8 @@ static int lines_added, lines_removed;

 static struct fileinfo {
 	char status;
-	unsigned char old_sha1[20];
-	unsigned char new_sha1[20];
+	struct object_id old_oid[1];
+	struct object_id new_oid[1];
 	unsigned short old_mode;
 	unsigned short new_mode;
 	char *old_path;
@ -36,6 +36,7 @@ static struct fileinfo {

 static int use_ssdiff = 0;
 static struct diff_filepair *current_filepair;
+static const char *current_prefix;

 struct diff_filespec *cgit_get_current_old_file(void)
 {
@ -81,23 +82,23 @@ static void print_fileinfo(struct fileinfo *info)
 	}

 	html("<tr>");
-	htmlf("<td class='mode'>");
-	if (is_null_sha1(info->new_sha1)) {
+	html("<td class='mode'>");
+	if (is_null_oid(info->new_oid)) {
 		cgit_print_filemode(info->old_mode);
 	} else {
 		cgit_print_filemode(info->new_mode);
 	}

 	if (info->old_mode != info->new_mode &&
-	    !is_null_sha1(info->old_sha1) &&
-	    !is_null_sha1(info->new_sha1)) {
+	    !is_null_oid(info->old_oid) &&
+	    !is_null_oid(info->new_oid)) {
 		html("<span class='modechange'>[");
 		cgit_print_filemode(info->old_mode);
 		html("]</span>");
 	}
 	htmlf("</td><td class='%s'>", class);
-	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
-		       ctx.qry.sha2, info->new_path);
+	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.oid,
+		       ctx.qry.oid2, info->new_path);
 	if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) {
 		htmlf(" (%s from ",
 		      info->status == DIFF_STATUS_COPIED ? "copied" : "renamed");
@ -132,15 +133,34 @@ static void count_diff_lines(char *line, int len)
 	}
 }

+static int show_filepair(struct diff_filepair *pair)
+{
+	/* Always show if we have no limiting prefix. */
+	if (!current_prefix)
+		return 1;
+
+	/* Show if either path in the pair begins with the prefix. */
+	if (starts_with(pair->one->path, current_prefix) ||
+	    starts_with(pair->two->path, current_prefix))
+		return 1;
+
+	/* Otherwise we don't want to show this filepair. */
+	return 0;
+}
+
 static void inspect_filepair(struct diff_filepair *pair)
 {
 	int binary = 0;
 	unsigned long old_size = 0;
 	unsigned long new_size = 0;
+
+	if (!show_filepair(pair))
+		return;
+
 	files++;
 	lines_added = 0;
 	lines_removed = 0;
-	cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
+	cgit_diff_files(&pair->one->oid, &pair->two->oid, &old_size, &new_size,
 			&binary, 0, ctx.qry.ignorews, count_diff_lines);
 	if (files >= slots) {
 		if (slots == 0)
@ -150,8 +170,8 @@ static void inspect_filepair(struct diff_filepair *pair)
 		items = xrealloc(items, slots * sizeof(struct fileinfo));
 	}
 	items[files-1].status = pair->status;
-	hashcpy(items[files-1].old_sha1, pair->one->sha1);
-	hashcpy(items[files-1].new_sha1, pair->two->sha1);
+	oidcpy(items[files-1].old_oid, &pair->one->oid);
+	oidcpy(items[files-1].new_oid, &pair->two->oid);
 	items[files-1].old_mode = pair->one->mode;
 	items[files-1].new_mode = pair->two->mode;
 	items[files-1].old_path = xstrdup(pair->one->path);
@ -167,15 +187,15 @@ static void inspect_filepair(struct diff_filepair *pair)
 	total_rems += lines_removed;
 }

-static void cgit_print_diffstat(const unsigned char *old_sha1,
-				const unsigned char *new_sha1,
+static void cgit_print_diffstat(const struct object_id *old_oid,
+				const struct object_id *new_oid,
 				const char *prefix)
 {
 	int i;

 	html("<div class='diffstat-header'>");
-	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
-		       ctx.qry.sha2, NULL);
+	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.oid,
+		       ctx.qry.oid2, NULL);
 	if (prefix) {
 		html(" (limited to '");
 		html_txt(prefix);
@ -184,7 +204,7 @@ static void cgit_print_diffstat(const unsigned char *old_sha1,
 	html("</div>");
 	html("<table summary='diffstat' class='diffstat'>");
 	max_changes = 0;
-	cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, prefix,
+	cgit_diff_tree(old_oid, new_oid, inspect_filepair, prefix,
 		       ctx.qry.ignorews);
 	for (i = 0; i<files; i++)
 		print_fileinfo(&items[i]);
@ -218,8 +238,8 @@ static void print_line(char *line, int len)
 	line[len-1] = c;
 }

-static void header(unsigned char *sha1, char *path1, int mode1,
-		   unsigned char *sha2, char *path2, int mode2)
+static void header(const struct object_id *oid1, char *path1, int mode1,
+		   const struct object_id *oid2, char *path2, int mode2)
 {
 	char *abbrev1, *abbrev2;
 	int subproject;
@ -238,8 +258,8 @@ static void header(unsigned char *sha1, char *path1, int mode1,
 		htmlf("<br/>deleted file mode %.6o", mode1);

 	if (!subproject) {
-		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
-		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
+		abbrev1 = xstrdup(find_unique_abbrev(oid1, DEFAULT_ABBREV));
+		abbrev2 = xstrdup(find_unique_abbrev(oid2, DEFAULT_ABBREV));
 		htmlf("<br/>index %s..%s", abbrev1, abbrev2);
 		free(abbrev1);
 		free(abbrev2);
@ -248,24 +268,24 @@ static void header(unsigned char *sha1, char *path1, int mode1,
 			if (mode2 != mode1)
 				htmlf("..%.6o", mode2);
 		}
-		if (is_null_sha1(sha1)) {
+		if (is_null_oid(oid1)) {
 			path1 = "dev/null";
 			html("<br/>--- /");
 		} else
 			html("<br/>--- a/");
 		if (mode1 != 0)
 			cgit_tree_link(path1, NULL, NULL, ctx.qry.head,
-				       sha1_to_hex(old_rev_sha1), path1);
+				       oid_to_hex(old_rev_oid), path1);
 		else
 			html_txt(path1);
-		if (is_null_sha1(sha2)) {
+		if (is_null_oid(oid2)) {
 			path2 = "dev/null";
 			html("<br/>+++ /");
 		} else
 			html("<br/>+++ b/");
 		if (mode2 != 0)
 			cgit_tree_link(path2, NULL, NULL, ctx.qry.head,
-				       sha1_to_hex(new_rev_sha1), path2);
+				       oid_to_hex(new_rev_oid), path2);
 		else
 			html_txt(path2);
 	}
@ -279,25 +299,28 @@ static void filepair_cb(struct diff_filepair *pair)
 	int binary = 0;
 	linediff_fn print_line_fn = print_line;

+	if (!show_filepair(pair))
+		return;
+
 	current_filepair = pair;
 	if (use_ssdiff) {
 		cgit_ssdiff_header_begin();
 		print_line_fn = cgit_ssdiff_line_cb;
 	}
-	header(pair->one->sha1, pair->one->path, pair->one->mode,
-	       pair->two->sha1, pair->two->path, pair->two->mode);
+	header(&pair->one->oid, pair->one->path, pair->one->mode,
+	       &pair->two->oid, pair->two->path, pair->two->mode);
 	if (use_ssdiff)
 		cgit_ssdiff_header_end();
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
-			print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
+			print_line_fn(fmt("-Subproject %s", oid_to_hex(&pair->one->oid)), 52);
 		if (S_ISGITLINK(pair->two->mode))
-			print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
+			print_line_fn(fmt("+Subproject %s", oid_to_hex(&pair->two->oid)), 52);
 		if (use_ssdiff)
 			cgit_ssdiff_footer();
 		return;
 	}
-	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
+	if (cgit_diff_files(&pair->one->oid, &pair->two->oid, &old_size,
 			    &new_size, &binary, ctx.qry.context,
 			    ctx.qry.ignorews, print_line_fn))
 		cgit_print_error("Error running diff");
@ -317,7 +340,7 @@ void cgit_print_diff_ctrls(void)

 	html("<div class='cgit-panel'>");
 	html("<b>diff options</b>");
-	html("<form method='get' action='.'>");
+	html("<form method='get'>");
 	cgit_add_hidden_formfields(1, 0, ctx.qry.page);
 	html("<table>");
 	html("<tr><td colspan='2'/></tr>");
@ -362,42 +385,58 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 		     const char *prefix, int show_ctrls, int raw)
 {
 	struct commit *commit, *commit2;
-	const unsigned char *old_tree_sha1, *new_tree_sha1;
+	const struct object_id *old_tree_oid, *new_tree_oid;
 	diff_type difftype;

+	/*
+	 * If "follow" is set then the diff machinery needs to examine the
+	 * entire commit to detect renames so we must limit the paths in our
+	 * own callbacks and not pass the prefix to the diff machinery.
+	 */
+	if (ctx.qry.follow && ctx.cfg.enable_follow_links) {
+		current_prefix = prefix;
+		prefix = "";
+	} else {
+		current_prefix = NULL;
+	}
+
 	if (!new_rev)
 		new_rev = ctx.qry.head;
-	if (get_sha1(new_rev, new_rev_sha1)) {
-		cgit_print_error("Bad object name: %s", new_rev);
+	if (get_oid(new_rev, new_rev_oid)) {
+		cgit_print_error_page(404, "Not found",
+			"Bad object name: %s", new_rev);
 		return;
 	}
-	commit = lookup_commit_reference(new_rev_sha1);
+	commit = lookup_commit_reference(the_repository, new_rev_oid);
 	if (!commit || parse_commit(commit)) {
-		cgit_print_error("Bad commit: %s", sha1_to_hex(new_rev_sha1));
+		cgit_print_error_page(404, "Not found",
+			"Bad commit: %s", oid_to_hex(new_rev_oid));
 		return;
 	}
-	new_tree_sha1 = commit->tree->object.sha1;
+	new_tree_oid = get_commit_tree_oid(commit);

 	if (old_rev) {
-		if (get_sha1(old_rev, old_rev_sha1)) {
-			cgit_print_error("Bad object name: %s", old_rev);
+		if (get_oid(old_rev, old_rev_oid)) {
+			cgit_print_error_page(404, "Not found",
+				"Bad object name: %s", old_rev);
 			return;
 		}
 	} else if (commit->parents && commit->parents->item) {
-		hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
+		oidcpy(old_rev_oid, &commit->parents->item->object.oid);
 	} else {
-		hashclr(old_rev_sha1);
+		oidclr(old_rev_oid);
 	}

-	if (!is_null_sha1(old_rev_sha1)) {
-		commit2 = lookup_commit_reference(old_rev_sha1);
+	if (!is_null_oid(old_rev_oid)) {
+		commit2 = lookup_commit_reference(the_repository, old_rev_oid);
 		if (!commit2 || parse_commit(commit2)) {
-			cgit_print_error("Bad commit: %s", sha1_to_hex(old_rev_sha1));
+			cgit_print_error_page(404, "Not found",
+				"Bad commit: %s", oid_to_hex(old_rev_oid));
 			return;
 		}
-		old_tree_sha1 = commit2->tree->object.sha1;
+		old_tree_oid = get_commit_tree_oid(commit2);
 	} else {
-		old_tree_sha1 = NULL;
+		old_tree_oid = NULL;
 	}

 	if (raw) {
@ -405,16 +444,16 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,

 		diff_setup(&diffopt);
 		diffopt.output_format = DIFF_FORMAT_PATCH;
-		DIFF_OPT_SET(&diffopt, RECURSIVE);
+		diffopt.flags.recursive = 1;
 		diff_setup_done(&diffopt);

 		ctx.page.mimetype = "text/plain";
 		cgit_print_http_headers();
-		if (old_tree_sha1) {
-			diff_tree_sha1(old_tree_sha1, new_tree_sha1, "",
+		if (old_tree_oid) {
+			diff_tree_oid(old_tree_oid, new_tree_oid, "",
 				       &diffopt);
 		} else {
-			diff_root_tree_sha1(new_tree_sha1, "", &diffopt);
+			diff_root_tree_oid(new_tree_oid, "", &diffopt);
 		}
 		diffcore_std(&diffopt);
 		diff_flush(&diffopt);
@ -425,8 +464,10 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 	difftype = ctx.qry.has_difftype ? ctx.qry.difftype : ctx.cfg.difftype;
 	use_ssdiff = difftype == DIFF_SSDIFF;

-	if (show_ctrls)
+	if (show_ctrls) {
+		cgit_print_layout_start();
 		cgit_print_diff_ctrls();
+	}

 	/*
 	 * Clicking on a link to a file in the diff stat should show a diff
@ -438,7 +479,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 	if (difftype == DIFF_STATONLY)
 		ctx.qry.difftype = ctx.cfg.difftype;

-	cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);
+	cgit_print_diffstat(old_rev_oid, new_rev_oid, prefix);

 	if (difftype == DIFF_STATONLY)
 		return;
@ -449,9 +490,12 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 		html("<table summary='diff' class='diff'>");
 		html("<tr><td>");
 	}
-	cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix,
+	cgit_diff_tree(old_rev_oid, new_rev_oid, filepair_cb, prefix,
 		       ctx.qry.ignorews);
 	if (!use_ssdiff)
 		html("</td></tr>");
 	html("</table>");
+
+	if (show_ctrls)
+		cgit_print_layout_end();
 }
--- a/ui-diff.h
+++ b/ui-diff.h
@ -1,7 +1,7 @@
 #ifndef UI_DIFF_H
 #define UI_DIFF_H

-extern void cgit_print_diff_ctrls();
+extern void cgit_print_diff_ctrls(void);

 extern void cgit_print_diff(const char *new_hex, const char *old_hex,
 			    const char *prefix, int show_ctrls, int raw);
@ -9,7 +9,7 @@ extern void cgit_print_diff(const char *new_hex, const char *old_hex,
 extern struct diff_filespec *cgit_get_current_old_file(void);
 extern struct diff_filespec *cgit_get_current_new_file(void);

-extern unsigned char old_rev_sha1[20];
-extern unsigned char new_rev_sha1[20];
+extern struct object_id old_rev_oid[1];
+extern struct object_id new_rev_oid[1];

 #endif /* UI_DIFF_H */
--- a/ui-log.c
+++ b/ui-log.c
@ -10,9 +10,9 @@
 #include "ui-log.h"
 #include "html.h"
 #include "ui-shared.h"
-#include "argv-array.h"
+#include "strvec.h"

-static int files, add_lines, rem_lines;
+static int files, add_lines, rem_lines, lines_counted;

 /*
 * The list of available column colors in the commit graph.
@ -49,7 +49,7 @@ static void inspect_files(struct diff_filepair *pair)

 	files++;
 	if (ctx.repo->enable_log_linecount)
-		cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
+		cgit_diff_files(&pair->one->oid, &pair->two->oid, &old_size,
 				&new_size, &binary, 0, ctx.qry.ignorews,
 				count_lines);
 }
@ -61,43 +61,117 @@ void show_commit_decorations(struct commit *commit)

 	buf[sizeof(buf) - 1] = 0;
 	deco = get_name_decoration(&commit->object);
+	if (!deco)
+		return;
 	html("<span class='decoration'>");
 	while (deco) {
-		if (starts_with(deco->name, "refs/heads/")) {
-			strncpy(buf, deco->name + 11, sizeof(buf) - 1);
+		struct object_id oid_tag, peeled;
+		int is_annotated = 0;
+
+		strlcpy(buf, prettify_refname(deco->name), sizeof(buf));
+		switch(deco->type) {
+		case DECORATION_NONE:
+			/* If the git-core doesn't recognize it,
+			 * don't display anything. */
+			break;
+		case DECORATION_REF_LOCAL:
 			cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
-				      ctx.qry.vpath, 0, NULL, NULL,
-				      ctx.qry.showmsg);
-		}
-		else if (starts_with(deco->name, "tag: refs/tags/")) {
-			strncpy(buf, deco->name + 15, sizeof(buf) - 1);
-			cgit_tag_link(buf, NULL, "tag-deco", buf);
-		}
-		else if (starts_with(deco->name, "refs/tags/")) {
-			strncpy(buf, deco->name + 10, sizeof(buf) - 1);
-			cgit_tag_link(buf, NULL, "tag-deco", buf);
-		}
-		else if (starts_with(deco->name, "refs/remotes/")) {
+				ctx.qry.vpath, 0, NULL, NULL,
+				ctx.qry.showmsg, 0);
+			break;
+		case DECORATION_REF_TAG:
+			if (!read_ref(deco->name, &oid_tag) && !peel_iterated_oid(&oid_tag, &peeled))
+				is_annotated = !oideq(&oid_tag, &peeled);
+			cgit_tag_link(buf, NULL, is_annotated ? "tag-annotated-deco" : "tag-deco", buf);
+			break;
+		case DECORATION_REF_REMOTE:
 			if (!ctx.repo->enable_remote_branches)
-				goto next;
-			strncpy(buf, deco->name + 13, sizeof(buf) - 1);
+				break;
 			cgit_log_link(buf, NULL, "remote-deco", NULL,
-				      sha1_to_hex(commit->object.sha1),
-				      ctx.qry.vpath, 0, NULL, NULL,
-				      ctx.qry.showmsg);
-		}
-		else {
-			strncpy(buf, deco->name, sizeof(buf) - 1);
+				oid_to_hex(&commit->object.oid),
+				ctx.qry.vpath, 0, NULL, NULL,
+				ctx.qry.showmsg, 0);
+			break;
+		default:
 			cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
-					 sha1_to_hex(commit->object.sha1),
-					 ctx.qry.vpath);
+					oid_to_hex(&commit->object.oid),
+					ctx.qry.vpath);
+			break;
 		}
-next:
 		deco = deco->next;
 	}
 	html("</span>");
 }

+static void handle_rename(struct diff_filepair *pair)
+{
+	/*
+	 * After we have seen a rename, we generate links to the previous
+	 * name of the file so that commit & diff views get fed the path
+	 * that is correct for the commit they are showing, avoiding the
+	 * need to walk the entire history leading back to every commit we
+	 * show in order detect renames.
+	 */
+	if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
+		free(ctx.qry.vpath);
+		ctx.qry.vpath = xstrdup(pair->two->path);
+	}
+	inspect_files(pair);
+}
+
+static int show_commit(struct commit *commit, struct rev_info *revs)
+{
+	struct commit_list *parents = commit->parents;
+	struct commit *parent;
+	int found = 0, saved_fmt;
+	struct diff_flags saved_flags = revs->diffopt.flags;
+
+	/* Always show if we're not in "follow" mode with a single file. */
+	if (!ctx.qry.follow)
+		return 1;
+
+	/*
+	 * In "follow" mode, we don't show merges.  This is consistent with
+	 * "git log --follow -- <file>".
+	 */
+	if (parents && parents->next)
+		return 0;
+
+	/*
+	 * If this is the root commit, do what rev_info tells us.
+	 */
+	if (!parents)
+		return revs->show_root_diff;
+
+	/* When we get here we have precisely one parent. */
+	parent = parents->item;
+	/* If we can't parse the commit, let print_commit() report an error. */
+	if (parse_commit(parent))
+		return 1;
+
+	files = 0;
+	add_lines = 0;
+	rem_lines = 0;
+
+	revs->diffopt.flags.recursive = 1;
+	diff_tree_oid(get_commit_tree_oid(parent),
+		      get_commit_tree_oid(commit),
+		      "", &revs->diffopt);
+	diffcore_std(&revs->diffopt);
+
+	found = !diff_queue_is_empty(&revs->diffopt);
+	saved_fmt = revs->diffopt.output_format;
+	revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
+	revs->diffopt.format_callback = cgit_diff_tree_cb;
+	revs->diffopt.format_callback_data = handle_rename;
+	diff_flush(&revs->diffopt);
+	revs->diffopt.output_format = saved_fmt;
+	revs->diffopt.flags = saved_flags;
+
+	lines_counted = 1;
+	return found;
+}
+
 static void print_commit(struct commit *commit, struct rev_info *revs)
 {
 	struct commitinfo *info;
@ -134,7 +208,7 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 	}
 	else {
 		html("<td>");
-		cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
+		cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
 		html("</td>");
 	}

@ -161,11 +235,11 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 			strbuf_add(&msgbuf, "\n\n", 2);

 			/* Place wrap_symbol at position i in info->subject */
-			strcpy(info->subject + i, wrap_symbol);
+			strlcpy(info->subject + i, wrap_symbol, subject_len - i + 1);
 		}
 	}
 	cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
-			 sha1_to_hex(commit->object.sha1), ctx.qry.vpath);
+			 oid_to_hex(&commit->object.oid), ctx.qry.vpath);
 	show_commit_decorations(commit);
 	html("</td><td>");
 	cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
@ -174,10 +248,11 @@ static void print_commit(struct commit *commit, struct rev_info *revs)

 	if (revs->graph) {
 		html("</td><td>");
-		cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
+		cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
 	}

-	if (ctx.repo->enable_log_filecount || ctx.repo->enable_log_linecount) {
+	if (!lines_counted && (ctx.repo->enable_log_filecount ||
+			       ctx.repo->enable_log_linecount)) {
 		files = 0;
 		add_lines = 0;
 		rem_lines = 0;
@ -187,12 +262,14 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 	if (ctx.repo->enable_log_filecount)
 		htmlf("</td><td>%d", files);
 	if (ctx.repo->enable_log_linecount)
-		htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
+		htmlf("</td><td><span class='deletions'>-%d</span>/"
+			"<span class='insertions'>+%d</span>", rem_lines, add_lines);

 	html("</td></tr>\n");

-	if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
-		html("<tr class='nohover'>");
+	if ((revs->graph && !graph_is_commit_finished(revs->graph))
+			|| ctx.qry.showmsg) { /* Print a second table row */
+		html("<tr class='nohover-highlight'>");

 		if (ctx.qry.showmsg) {
 			/* Concatenate commit message + notes in msgbuf */
@ -200,7 +277,7 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 				strbuf_addstr(&msgbuf, info->msg);
 				strbuf_addch(&msgbuf, '\n');
 			}
-			format_display_notes(commit->object.sha1,
+			format_display_notes(&commit->object.oid,
 					     &msgbuf, PAGE_ENCODING, 0);
 			strbuf_addch(&msgbuf, '\n');
 			strbuf_ltrim(&msgbuf);
@ -249,11 +326,11 @@ static void print_commit(struct commit *commit, struct rev_info *revs)

 static const char *disambiguate_ref(const char *ref, int *must_free_result)
 {
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct strbuf longref = STRBUF_INIT;

 	strbuf_addf(&longref, "refs/heads/%s", ref);
-	if (get_sha1(longref.buf, sha1) == 0) {
+	if (get_oid(longref.buf, &oid) == 0) {
 		*must_free_result = 1;
 		return strbuf_detach(&longref, NULL);
 	}
@ -286,27 +363,27 @@ static char *next_token(char **src)
 }

 void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
-		    char *path, int pager, int commit_graph, int commit_sort)
+		    const char *path, int pager, int commit_graph, int commit_sort)
 {
 	struct rev_info rev;
 	struct commit *commit;
-	struct argv_array rev_argv = ARGV_ARRAY_INIT;
+	struct strvec rev_argv = STRVEC_INIT;
 	int i, columns = commit_graph ? 4 : 3;
 	int must_free_tip = 0;

 	/* rev_argv.argv[0] will be ignored by setup_revisions */
-	argv_array_push(&rev_argv, "log_rev_setup");
+	strvec_push(&rev_argv, "log_rev_setup");

 	if (!tip)
 		tip = ctx.qry.head;
 	tip = disambiguate_ref(tip, &must_free_tip);
-	argv_array_push(&rev_argv, tip);
+	strvec_push(&rev_argv, tip);

 	if (grep && pattern && *pattern) {
 		pattern = xstrdup(pattern);
 		if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
 		    !strcmp(grep, "committer")) {
-			argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
+			strvec_pushf(&rev_argv, "--%s=%s", grep, pattern);
 		} else if (!strcmp(grep, "range")) {
 			char *arg;
 			/* Split the pattern at whitespace and add each token
@ -314,32 +391,44 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 			 * rev-list options. Also, replace the previously
 			 * pushed tip (it's no longer relevant).
 			 */
-			argv_array_pop(&rev_argv);
+			strvec_pop(&rev_argv);
 			while ((arg = next_token(&pattern))) {
 				if (*arg == '-') {
 					fprintf(stderr, "Bad range expr: %s\n",
 						arg);
 					break;
 				}
-				argv_array_push(&rev_argv, arg);
+				strvec_push(&rev_argv, arg);
 			}
 		}
 	}
-	if (commit_graph) {
-		argv_array_push(&rev_argv, "--graph");
-		argv_array_push(&rev_argv, "--color");
+
+	if (!path || !ctx.cfg.enable_follow_links) {
+		/*
+		 * If we don't have a path, "follow" is a no-op so make sure
+		 * the variable is set to false to avoid needing to check
+		 * both this and whether we have a path everywhere.
+		 */
+		ctx.qry.follow = 0;
+	}
+
+	if (commit_graph && !ctx.qry.follow) {
+		strvec_push(&rev_argv, "--graph");
+		strvec_push(&rev_argv, "--color");
 		graph_set_column_colors(column_colors_html,
 					COLUMN_COLORS_HTML_MAX);
 	}

 	if (commit_sort == 1)
-		argv_array_push(&rev_argv, "--date-order");
+		strvec_push(&rev_argv, "--date-order");
 	else if (commit_sort == 2)
-		argv_array_push(&rev_argv, "--topo-order");
+		strvec_push(&rev_argv, "--topo-order");

-	argv_array_push(&rev_argv, "--");
+	if (path && ctx.qry.follow)
+		strvec_push(&rev_argv, "--follow");
+	strvec_push(&rev_argv, "--");
 	if (path)
-		argv_array_push(&rev_argv, path);
+		strvec_push(&rev_argv, path);

 	init_revisions(&rev, NULL);
 	rev.abbrev = DEFAULT_ABBREV;
@ -347,15 +436,24 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	rev.verbose_header = 1;
 	rev.show_root_diff = 0;
 	rev.ignore_missing = 1;
-	setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
-	load_ref_decorations(DECORATE_FULL_REFS);
+	rev.simplify_history = 1;
+	setup_revisions(rev_argv.nr, rev_argv.v, &rev, NULL);
+	load_ref_decorations(NULL, DECORATE_FULL_REFS);
 	rev.show_decorations = 1;
-	rev.grep_filter.regflags |= REG_ICASE;
+	rev.grep_filter.ignore_case = 1;
+
+	rev.diffopt.detect_rename = 1;
+	rev.diffopt.rename_limit = ctx.cfg.renamelimit;
+	if (ctx.qry.ignorews)
+		DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
+
 	compile_grep_patterns(&rev.grep_filter);
 	prepare_revision_walk(&rev);

-	if (pager)
+	if (pager) {
+		cgit_print_layout_start();
 		html("<table class='list nowrap'>");
+	}

 	html("<tr class='nohover'>");
 	if (commit_graph)
@ -366,13 +464,14 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	if (pager) {
 		html(" (");
 		cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
-			      NULL, ctx.qry.head, ctx.qry.sha1,
+			      NULL, ctx.qry.head, ctx.qry.oid,
 			      ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
-			      ctx.qry.search, ctx.qry.showmsg ? 0 : 1);
+			      ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
+			      ctx.qry.follow);
 		html(")");
 	}
 	html("</th><th class='left'>Author</th>");
-	if (commit_graph)
+	if (rev.graph)
 		html("<th class='left'>Age</th>");
 	if (ctx.repo->enable_log_filecount) {
 		html("<th class='left'>Files</th>");
@ -387,16 +486,31 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	if (ofs<0)
 		ofs = 0;

-	for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; i++) {
-		free_commit_buffer(commit);
-		free_commit_list(commit->parents);
+	for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
+		if (show_commit(commit, &rev))
+			i++;
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}

-	for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
-		print_commit(commit, &rev);
-		free_commit_buffer(commit);
-		free_commit_list(commit->parents);
+	for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
+		/*
+		 * In "follow" mode, we must count the files and lines the
+		 * first time we invoke diff on a given commit, and we need
+		 * to do that to see if the commit touches the path we care
+		 * about, so we do it in show_commit.  Hence we must clear
+		 * lines_counted here.
+		 *
+		 * This has the side effect of avoiding running diff twice
+		 * when we are both following renames and showing file
+		 * and/or line counts.
+		 */
+		lines_counted = 0;
+		if (show_commit(commit, &rev)) {
+			i++;
+			print_commit(commit, &rev);
+		}
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 	if (pager) {
@ -404,24 +518,28 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 		if (ofs > 0) {
 			html("<li>");
 			cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
-				      ctx.qry.sha1, ctx.qry.vpath,
+				      ctx.qry.oid, ctx.qry.vpath,
 				      ofs - cnt, ctx.qry.grep,
-				      ctx.qry.search, ctx.qry.showmsg);
+				      ctx.qry.search, ctx.qry.showmsg,
+				      ctx.qry.follow);
 			html("</li>");
 		}
 		if ((commit = get_revision(&rev)) != NULL) {
 			html("<li>");
 			cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
-				      ctx.qry.sha1, ctx.qry.vpath,
+				      ctx.qry.oid, ctx.qry.vpath,
 				      ofs + cnt, ctx.qry.grep,
-				      ctx.qry.search, ctx.qry.showmsg);
+				      ctx.qry.search, ctx.qry.showmsg,
+				      ctx.qry.follow);
 			html("</li>");
 		}
 		html("</ul>");
+		cgit_print_layout_end();
 	} else if ((commit = get_revision(&rev)) != NULL) {
 		htmlf("<tr class='nohover'><td colspan='%d'>", columns);
 		cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
-			      ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg);
+			      ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
+			      ctx.qry.follow);
 		html("</td></tr>\n");
 	}

--- a/ui-log.h
+++ b/ui-log.h
@ -2,7 +2,7 @@
 #define UI_LOG_H

 extern void cgit_print_log(const char *tip, int ofs, int cnt, char *grep,
-			   char *pattern, char *path, int pager,
+			   char *pattern, const char *path, int pager,
 			   int commit_graph, int commit_sort);
 extern void show_commit_decorations(struct commit *commit);

--- a/ui-patch.c
+++ b/ui-patch.c
@ -11,49 +11,60 @@
 #include "html.h"
 #include "ui-shared.h"

+/* two commit hashes with two dots in between and termination */
+#define REV_RANGE_LEN 2 * GIT_MAX_HEXSZ + 3
+
 void cgit_print_patch(const char *new_rev, const char *old_rev,
 		      const char *prefix)
 {
 	struct rev_info rev;
 	struct commit *commit;
-	unsigned char new_rev_sha1[20], old_rev_sha1[20];
-	char rev_range[2 * 40 + 3];
-	char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
+	struct object_id new_rev_oid, old_rev_oid;
+	char rev_range[REV_RANGE_LEN];
+	const char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range, "--", prefix, NULL };
+	int rev_argc = ARRAY_SIZE(rev_argv) - 1;
 	char *patchname;

+	if (!prefix)
+		rev_argc--;
+
 	if (!new_rev)
 		new_rev = ctx.qry.head;

-	if (get_sha1(new_rev, new_rev_sha1)) {
-		cgit_print_error("Bad object id: %s", new_rev);
+	if (get_oid(new_rev, &new_rev_oid)) {
+		cgit_print_error_page(404, "Not found",
+				"Bad object id: %s", new_rev);
 		return;
 	}
-	commit = lookup_commit_reference(new_rev_sha1);
+	commit = lookup_commit_reference(the_repository, &new_rev_oid);
 	if (!commit) {
-		cgit_print_error("Bad commit reference: %s", new_rev);
+		cgit_print_error_page(404, "Not found",
+				"Bad commit reference: %s", new_rev);
 		return;
 	}

 	if (old_rev) {
-		if (get_sha1(old_rev, old_rev_sha1)) {
-			cgit_print_error("Bad object id: %s", old_rev);
+		if (get_oid(old_rev, &old_rev_oid)) {
+			cgit_print_error_page(404, "Not found",
+					"Bad object id: %s", old_rev);
 			return;
 		}
-		if (!lookup_commit_reference(old_rev_sha1)) {
-			cgit_print_error("Bad commit reference: %s", old_rev);
+		if (!lookup_commit_reference(the_repository, &old_rev_oid)) {
+			cgit_print_error_page(404, "Not found",
+					"Bad commit reference: %s", old_rev);
 			return;
 		}
 	} else if (commit->parents && commit->parents->item) {
-		hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
+		oidcpy(&old_rev_oid, &commit->parents->item->object.oid);
 	} else {
-		hashclr(old_rev_sha1);
+		oidclr(&old_rev_oid);
 	}

-	if (is_null_sha1(old_rev_sha1)) {
-		memcpy(rev_range, sha1_to_hex(new_rev_sha1), 41);
+	if (is_null_oid(&old_rev_oid)) {
+		memcpy(rev_range, oid_to_hex(&new_rev_oid), the_hash_algo->hexsz + 1);
 	} else {
-		sprintf(rev_range, "%s..%s", sha1_to_hex(old_rev_sha1),
-			sha1_to_hex(new_rev_sha1));
+		xsnprintf(rev_range, REV_RANGE_LEN, "%s..%s", oid_to_hex(&old_rev_oid),
+			oid_to_hex(&new_rev_oid));
 	}

 	patchname = fmt("%s.patch", rev_range);
@ -75,14 +86,13 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
 	rev.max_parents = 1;
 	rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |
 			DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;
-	setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
-			NULL);
+	if (prefix)
+		rev.diffopt.stat_sep = fmt("(limited to '%s')\n\n", prefix);
+	setup_revisions(rev_argc, rev_argv, &rev, NULL);
 	prepare_revision_walk(&rev);

 	while ((commit = get_revision(&rev)) != NULL) {
 		log_tree_commit(&rev, commit);
 		printf("-- \ncgit %s\n\n", cgit_version);
 	}
-
-	fflush(stdout);
 }
--- a/ui-plain.c
+++ b/ui-plain.c
@ -6,7 +6,6 @@
 *   (see COPYING for full license text)
 */

-#include <stdio.h>
 #include "cgit.h"
 #include "ui-plain.h"
 #include "html.h"
@ -17,81 +16,37 @@ struct walk_tree_context {
 	int match;
 };

-static char *get_mimetype_from_file(const char *filename, const char *ext)
-{
-	static const char *delimiters;
-	char *result;
-	FILE *fd;
-	char line[1024];
-	char *mimetype;
-	char *token;
-
-	if (!filename)
-		return NULL;
-
-	fd = fopen(filename, "r");
-	if (!fd)
-		return NULL;
-
-	delimiters = " \t\r\n";
-	result = NULL;
-
-	/* loop over all lines in the file */
-	while (!result && fgets(line, sizeof(line), fd)) {
-		mimetype = strtok(line, delimiters);
-
-		/* skip empty lines and comment lines */
-		if (!mimetype || (mimetype[0] == '#'))
-			continue;
-
-		/* loop over all extensions of mimetype */
-		while ((token = strtok(NULL, delimiters))) {
-			if (!strcasecmp(ext, token)) {
-				result = xstrdup(mimetype);
-				break;
-			}
-		}
-	}
-	fclose(fd);
-
-	return result;
-}
-
-static int print_object(const unsigned char *sha1, const char *path)
+static int print_object(const struct object_id *oid, const char *path)
 {
 	enum object_type type;
-	char *buf, *ext;
+	char *buf, *mimetype;
 	unsigned long size;
-	struct string_list_item *mime;
-	int freemime;

-	type = sha1_object_info(sha1, &size);
+	type = oid_object_info(the_repository, oid, &size);
 	if (type == OBJ_BAD) {
-		html_status(404, "Not found", 0);
+		cgit_print_error_page(404, "Not found", "Not found");
 		return 0;
 	}

-	buf = read_sha1_file(sha1, &type, &size);
+	buf = read_object_file(oid, &type, &size);
 	if (!buf) {
-		html_status(404, "Not found", 0);
+		cgit_print_error_page(404, "Not found", "Not found");
 		return 0;
 	}
-	ctx.page.mimetype = NULL;
-	ext = strrchr(path, '.');
-	freemime = 0;
-	if (ext && *(++ext)) {
-		mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
-		if (mime) {
-			ctx.page.mimetype = (char *)mime->util;
-			ctx.page.charset = NULL;
-		} else {
-			ctx.page.mimetype = get_mimetype_from_file(ctx.cfg.mimetype_file, ext);
-			if (ctx.page.mimetype) {
-				freemime = 1;
-				ctx.page.charset = NULL;
-			}
+
+	mimetype = get_mimetype_for_filename(path);
+	ctx.page.mimetype = mimetype;
+
+	if (!ctx.repo->enable_html_serving) {
+		html("X-Content-Type-Options: nosniff\n");
+		html("Content-Security-Policy: default-src 'none'\n");
+		if (mimetype) {
+			/* Built-in white list allows PDF and everything that isn't text/ and application/ */
+			if ((!strncmp(mimetype, "text/", 5) || !strncmp(mimetype, "application/", 12)) && strcmp(mimetype, "application/pdf"))
+				ctx.page.mimetype = NULL;
 		}
 	}
+
 	if (!ctx.page.mimetype) {
 		if (buffer_is_binary(buf, size)) {
 			ctx.page.mimetype = "application/octet-stream";
@ -102,12 +57,11 @@ static int print_object(const unsigned char *sha1, const char *path)
 	}
 	ctx.page.filename = path;
 	ctx.page.size = size;
-	ctx.page.etag = sha1_to_hex(sha1);
+	ctx.page.etag = oid_to_hex(oid);
 	cgit_print_http_headers();
 	html_raw(buf, size);
-	/* If we allocated this, then casting away const is safe. */
-	if (freemime)
-		free((char*) ctx.page.mimetype);
+	free(mimetype);
+	free(buf);
 	return 1;
 }

@ -119,7 +73,7 @@ static char *buildpath(const char *base, int baselen, const char *path)
 		return fmtalloc("%.*s/", baselen, base);
 }

-static void print_dir(const unsigned char *sha1, const char *base,
+static void print_dir(const struct object_id *oid, const char *base,
 		      int baselen, const char *path)
 {
 	char *fullpath, *slash;
@ -127,7 +81,7 @@ static void print_dir(const unsigned char *sha1, const char *base,

 	fullpath = buildpath(base, baselen, path);
 	slash = (fullpath[0] == '/' ? "" : "/");
-	ctx.page.etag = sha1_to_hex(sha1);
+	ctx.page.etag = oid_to_hex(oid);
 	cgit_print_http_headers();
 	htmlf("<html><head><title>%s", slash);
 	html_txt(fullpath);
@ -140,17 +94,19 @@ static void print_dir(const unsigned char *sha1, const char *base,
 		slash = strrchr(fullpath, '/');
 		if (slash)
 			*(slash + 1) = 0;
-		else
+		else {
+			free(fullpath);
 			fullpath = NULL;
+		}
 		html("<li>");
-		cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+		cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.oid,
 				fullpath);
 		html("</li>\n");
 	}
 	free(fullpath);
 }

-static void print_dir_entry(const unsigned char *sha1, const char *base,
+static void print_dir_entry(const struct object_id *oid, const char *base,
 			    int baselen, const char *path, unsigned mode)
 {
 	char *fullpath;
@ -160,9 +116,9 @@ static void print_dir_entry(const unsigned char *sha1, const char *base,
 		fullpath[strlen(fullpath) - 1] = 0;
 	html("  <li>");
 	if (S_ISGITLINK(mode)) {
-		cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
+		cgit_submodule_link(NULL, fullpath, oid_to_hex(oid));
 	} else
-		cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+		cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.oid,
 				fullpath);
 	html("</li>\n");
 	free(fullpath);
@ -173,22 +129,22 @@ static void print_dir_tail(void)
 	html(" </ul>\n</body></html>\n");
 }

-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;

 	if (base->len == walk_tree_ctx->match_baselen) {
-		if (S_ISREG(mode)) {
-			if (print_object(sha1, pathname))
+		if (S_ISREG(mode) || S_ISLNK(mode)) {
+			if (print_object(oid, pathname))
 				walk_tree_ctx->match = 1;
 		} else if (S_ISDIR(mode)) {
-			print_dir(sha1, base->buf, base->len, pathname);
+			print_dir(oid, base->buf, base->len, pathname);
 			walk_tree_ctx->match = 2;
 			return READ_TREE_RECURSIVE;
 		}
-	} else if (base->len > walk_tree_ctx->match_baselen) {
-		print_dir_entry(sha1, base->buf, base->len, pathname, mode);
+	} else if (base->len < INT_MAX && (int)base->len > walk_tree_ctx->match_baselen) {
+		print_dir_entry(oid, base->buf, base->len, pathname, mode);
 		walk_tree_ctx->match = 2;
 	} else if (S_ISDIR(mode)) {
 		return READ_TREE_RECURSIVE;
@ -207,8 +163,8 @@ static int basedir_len(const char *path)

 void cgit_print_plain(void)
 {
-	const char *rev = ctx.qry.sha1;
-	unsigned char sha1[20];
+	const char *rev = ctx.qry.oid;
+	struct object_id oid;
 	struct commit *commit;
 	struct pathspec_item path_items = {
 		.match = ctx.qry.path,
@ -225,26 +181,27 @@ void cgit_print_plain(void)
 	if (!rev)
 		rev = ctx.qry.head;

-	if (get_sha1(rev, sha1)) {
-		html_status(404, "Not found", 0);
+	if (get_oid(rev, &oid)) {
+		cgit_print_error_page(404, "Not found", "Not found");
 		return;
 	}
-	commit = lookup_commit_reference(sha1);
+	commit = lookup_commit_reference(the_repository, &oid);
 	if (!commit || parse_commit(commit)) {
-		html_status(404, "Not found", 0);
+		cgit_print_error_page(404, "Not found", "Not found");
 		return;
 	}
 	if (!path_items.match) {
 		path_items.match = "";
 		walk_tree_ctx.match_baselen = -1;
-		print_dir(commit->tree->object.sha1, "", 0, "");
+		print_dir(get_commit_tree_oid(commit), "", 0, "");
 		walk_tree_ctx.match = 2;
 	}
 	else
 		walk_tree_ctx.match_baselen = basedir_len(path_items.match);
-	read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+		  &paths, walk_tree, &walk_tree_ctx);
 	if (!walk_tree_ctx.match)
-		html_status(404, "Not found", 0);
+		cgit_print_error_page(404, "Not found", "Not found");
 	else if (walk_tree_ctx.match == 2)
 		print_dir_tail();
 }
--- a/ui-refs.c
+++ b/ui-refs.c
@ -63,7 +63,7 @@ static int print_branch(struct refinfo *ref)
 		return 1;
 	html("<tr><td>");
 	cgit_log_link(name, NULL, NULL, name, NULL, NULL, 0, NULL, NULL,
-		      ctx.qry.showmsg);
+		      ctx.qry.showmsg, 0);
 	html("</td><td>");

 	if (ref->object->type == OBJ_COMMIT) {
@ -73,7 +73,7 @@ static int print_branch(struct refinfo *ref)
 		html_txt(info->author);
 		cgit_close_filter(ctx.repo->email_filter);
 		html("</td><td colspan='2'>");
-		cgit_print_age(info->commit->date, -1, NULL);
+		cgit_print_age(info->committer_date, info->committer_tz, -1);
 	} else {
 		html("</td><td></td><td>");
 		cgit_object_link(ref->object);
@ -90,40 +90,6 @@ static void print_tag_header(void)
 	     "<th class='left' colspan='2'>Age</th></tr>\n");
 }

-static void print_tag_downloads(const struct cgit_repo *repo, const char *ref)
-{
-	const struct cgit_snapshot_format* f;
-	struct strbuf filename = STRBUF_INIT;
-	const char *basename;
-	int free_ref = 0;
-
-	if (!ref || strlen(ref) < 1)
-		return;
-
-	basename = cgit_repobasename(repo->url);
-	if (!starts_with(ref, basename)) {
-		if ((ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]))
-			ref++;
-		if (isdigit(ref[0])) {
-			ref = fmtalloc("%s-%s", basename, ref);
-			free_ref = 1;
-		}
-	}
-
-	for (f = cgit_snapshot_formats; f->suffix; f++) {
-		if (!(repo->snapshots & f->bit))
-			continue;
-		strbuf_reset(&filename);
-		strbuf_addf(&filename, "%s%s", ref, f->suffix);
-		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL, filename.buf);
-		html("&nbsp;&nbsp;");
-	}
-
-	if (free_ref)
-		free((char *)ref);
-	strbuf_release(&filename);
-}
-
 static int print_tag(struct refinfo *ref)
 {
 	struct tag *tag = NULL;
@ -135,7 +101,7 @@ static int print_tag(struct refinfo *ref)
 		tag = (struct tag *)obj;
 		obj = tag->tagged;
 		info = ref->tag;
-		if (!tag || !info)
+		if (!info)
 			return 1;
 	}

@ -143,7 +109,7 @@ static int print_tag(struct refinfo *ref)
 	cgit_tag_link(name, NULL, NULL, name);
 	html("</td><td>");
 	if (ctx.repo->snapshots && (obj->type == OBJ_COMMIT))
-		print_tag_downloads(ctx.repo, name);
+		cgit_print_snapshot_links(ctx.repo, name, "&nbsp;&nbsp;");
 	else
 		cgit_object_link(obj);
 	html("</td><td>");
@ -161,16 +127,16 @@ static int print_tag(struct refinfo *ref)
 	html("</td><td colspan='2'>");
 	if (info) {
 		if (info->tagger_date > 0)
-			cgit_print_age(info->tagger_date, -1, NULL);
+			cgit_print_age(info->tagger_date, info->tagger_tz, -1);
 	} else if (ref->object->type == OBJ_COMMIT) {
-		cgit_print_age(ref->commit->commit->date, -1, NULL);
+		cgit_print_age(ref->commit->commit->date, 0, -1);
 	}
 	html("</td></tr>\n");

 	return 0;
 }

-static void print_refs_link(char *path)
+static void print_refs_link(const char *path)
 {
 	html("<tr class='nohover'><td colspan='5'>");
 	cgit_refs_link("[...]", NULL, NULL, ctx.qry.head, NULL, path);
@ -236,7 +202,7 @@ void cgit_print_tags(int maxcount)

 void cgit_print_refs(void)
 {
-
+	cgit_print_layout_start();
 	html("<table class='list nowrap'>");

 	if (ctx.qry.path && starts_with(ctx.qry.path, "heads"))
@ -249,4 +215,5 @@ void cgit_print_refs(void)
 		cgit_print_tags(0);
 	}
 	html("</table>");
+	cgit_print_layout_end();
 }
--- a/ui-refs.h
+++ b/ui-refs.h
@ -3,6 +3,6 @@

 extern void cgit_print_branches(int maxcount);
 extern void cgit_print_tags(int maxcount);
-extern void cgit_print_refs();
+extern void cgit_print_refs(void);

 #endif /* UI_REFS_H */
--- a/ui-repolist.c
+++ b/ui-repolist.c
@ -10,17 +10,18 @@
 #include "ui-repolist.h"
 #include "html.h"
 #include "ui-shared.h"
-#include <strings.h>

-static time_t read_agefile(char *path)
+static time_t read_agefile(const char *path)
 {
 	time_t result;
 	size_t size;
-	char *buf;
+	char *buf = NULL;
 	struct strbuf date_buf = STRBUF_INIT;

-	if (readfile(path, &buf, &size))
-		return -1;
+	if (readfile(path, &buf, &size)) {
+		free(buf);
+		return 0;
+	}

 	if (parse_date(buf, &date_buf) == 0)
 		result = strtoul(date_buf.buf, NULL, 10);
@ -78,7 +79,7 @@ static void print_modtime(struct cgit_repo *repo)
 {
 	time_t t;
 	if (get_repo_modtime(repo, &t))
-		cgit_print_age(t, -1, NULL);
+		cgit_print_age(t, 0, -1);
 }

 static int is_match(struct cgit_repo *repo)
@ -105,16 +106,38 @@ static int is_in_url(struct cgit_repo *repo)
 	return 0;
 }

+static int is_visible(struct cgit_repo *repo)
+{
+	if (repo->hide || repo->ignore)
+		return 0;
+	if (!(is_match(repo) && is_in_url(repo)))
+		return 0;
+	return 1;
+}
+
+static int any_repos_visible(void)
+{
+	int i;
+
+	for (i = 0; i < cgit_repolist.count; i++) {
+		if (is_visible(&cgit_repolist.repos[i]))
+			return 1;
+	}
+	return 0;
+}
+
 static void print_sort_header(const char *title, const char *sort)
 {
+	char *currenturl = cgit_currenturl();
 	html("<th class='left'><a href='");
-	html_attr(cgit_currenturl());
+	html_attr(currenturl);
 	htmlf("?s=%s", sort);
 	if (ctx.qry.search) {
 		html("&amp;q=");
 		html_url_arg(ctx.qry.search);
 	}
 	htmlf("'>%s</a></th>", title);
+	free(currenturl);
 }

 static void print_header(void)
@ -161,27 +184,6 @@ static int cmp(const char *s1, const char *s2)
 	return 0;
 }

-static int sort_section(const void *a, const void *b)
-{
-	const struct cgit_repo *r1 = a;
-	const struct cgit_repo *r2 = b;
-	int result;
-	time_t t;
-
-	result = cmp(r1->section, r2->section);
-	if (!result) {
-		if (!strcmp(ctx.cfg.repository_sort, "age")) {
-			// get_repo_modtime caches the value in r->mtime, so we don't
-			// have to worry about inefficiencies here.
-			if (get_repo_modtime(r1, &t) && get_repo_modtime(r2, &t))
-				result = r2->mtime - r1->mtime;
-		}
-		if (!result)
-			result = cmp(r1->name, r2->name);
-	}
-	return result;
-}
-
 static int sort_name(const void *a, const void *b)
 {
 	const struct cgit_repo *r1 = a;
@ -218,6 +220,22 @@ static int sort_idle(const void *a, const void *b)
 	return t2 - t1;
 }

+static int sort_section(const void *a, const void *b)
+{
+	const struct cgit_repo *r1 = a;
+	const struct cgit_repo *r2 = b;
+	int result;
+
+	result = cmp(r1->section, r2->section);
+	if (!result) {
+		if (!strcmp(ctx.cfg.repository_sort, "age"))
+			result = sort_idle(r1, r2);
+		if (!result)
+			result = cmp(r1->name, r2->name);
+	}
+	return result;
+}
+
 struct sortcolumn {
 	const char *name;
 	int (*fn)(const void *a, const void *b);
@ -252,8 +270,14 @@ void cgit_print_repolist(void)
 	int i, columns = 3, hits = 0, header = 0;
 	char *last_section = NULL;
 	char *section;
+	char *repourl;
 	int sorted = 0;

+	if (!any_repos_visible()) {
+		cgit_print_error_page(404, "Not found", "No repositories found");
+		return;
+	}
+
 	if (ctx.cfg.enable_index_links)
 		++columns;
 	if (ctx.cfg.enable_index_owner)
@ -264,9 +288,6 @@ void cgit_print_repolist(void)
 	cgit_print_docstart();
 	cgit_print_pageheader();

-	if (ctx.cfg.index_header)
-		html_include(ctx.cfg.index_header);
-
 	if (ctx.qry.sort)
 		sorted = sort_repolist(ctx.qry.sort);
 	else if (ctx.cfg.section_sort)
@ -275,9 +296,7 @@ void cgit_print_repolist(void)
 	html("<table summary='repository list' class='list nowrap'>");
 	for (i = 0; i < cgit_repolist.count; i++) {
 		ctx.repo = &cgit_repolist.repos[i];
-		if (ctx.repo->hide || ctx.repo->ignore)
-			continue;
-		if (!(is_match(ctx.repo) && is_in_url(ctx.repo)))
+		if (!is_visible(ctx.repo))
 			continue;
 		hits++;
 		if (hits <= ctx.qry.ofs)
@ -294,7 +313,7 @@ void cgit_print_repolist(void)
 		    (last_section != NULL && section == NULL) ||
 		    (last_section != NULL && section != NULL &&
 		     strcmp(section, last_section)))) {
-			htmlf("<tr class='nohover'><td colspan='%d' class='reposection'>",
+			htmlf("<tr class='nohover-highlight'><td colspan='%d' class='reposection'>",
 			      columns);
 			html_txt(section);
 			html("</td></tr>");
@ -302,10 +321,13 @@ void cgit_print_repolist(void)
 		}
 		htmlf("<tr><td class='%s'>",
 		      !sorted && section ? "sublevel-repo" : "toplevel-repo");
-		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
+		cgit_summary_link(ctx.repo->name, NULL, NULL, NULL);
 		html("</td><td>");
-		html_link_open(cgit_repourl(ctx.repo->url), NULL, NULL);
-		html_ntxt(ctx.cfg.max_repodesc_len, ctx.repo->desc);
+		repourl = cgit_repourl(ctx.repo->url);
+		html_link_open(repourl, NULL, NULL);
+		free(repourl);
+		if (html_ntxt(ctx.repo->desc, ctx.cfg.max_repodesc_len) < 0)
+			html("...");
 		html_link_close();
 		html("</td><td>");
 		if (ctx.cfg.enable_index_owner) {
@ -314,13 +336,15 @@ void cgit_print_repolist(void)
 				html_txt(ctx.repo->owner);
 				cgit_close_filter(ctx.repo->owner_filter);
 			} else {
+				char *currenturl = cgit_currenturl();
 				html("<a href='");
-				html_attr(cgit_currenturl());
+				html_attr(currenturl);
 				html("?q=");
 				html_url_arg(ctx.repo->owner);
 				html("'>");
 				html_txt(ctx.repo->owner);
 				html("</a>");
+				free(currenturl);
 			}
 			html("</td><td>");
 		}
@ -330,25 +354,26 @@ void cgit_print_repolist(void)
 			html("<td>");
 			cgit_summary_link("summary", NULL, "button", NULL);
 			cgit_log_link("log", NULL, "button", NULL, NULL, NULL,
-				      0, NULL, NULL, ctx.qry.showmsg);
+				      0, NULL, NULL, ctx.qry.showmsg, 0);
 			cgit_tree_link("tree", NULL, "button", NULL, NULL, NULL);
 			html("</td>");
 		}
 		html("</tr>\n");
 	}
 	html("</table>");
-	if (!hits)
-		cgit_print_error("No repositories found");
-	else if (hits > ctx.cfg.max_repo_count)
+	if (hits > ctx.cfg.max_repo_count)
 		print_pager(hits, ctx.cfg.max_repo_count, ctx.qry.search, ctx.qry.sort);
 	cgit_print_docend();
 }

 void cgit_print_site_readme(void)
 {
+	cgit_print_layout_start();
 	if (!ctx.cfg.root_readme)
-		return;
+		goto done;
 	cgit_open_filter(ctx.cfg.about_filter, ctx.cfg.root_readme);
 	html_include(ctx.cfg.root_readme);
 	cgit_close_filter(ctx.cfg.about_filter);
+done:
+	cgit_print_layout_end();
 }
--- a/ui-repolist.h
+++ b/ui-repolist.h
@ -1,7 +1,7 @@
 #ifndef UI_REPOLIST_H
 #define UI_REPOLIST_H

-extern void cgit_print_repolist();
-extern void cgit_print_site_readme();
+extern void cgit_print_repolist(void);
+extern void cgit_print_site_readme(void);

 #endif /* UI_REPOLIST_H */
--- a/ui-shared.c
+++ b/ui-shared.c
@ -1,6 +1,6 @@
 /* ui-shared.c: common web output functions
 *
- * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
+ * Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
@ -10,10 +10,10 @@
 #include "ui-shared.h"
 #include "cmd.h"
 #include "html.h"
+#include "version.h"

 static const char cgit_doctype[] =
-"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
-"  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
+"<!DOCTYPE html>\n";

 static char *http_date(time_t t)
 {
@ -22,10 +22,11 @@ static char *http_date(time_t t)
 	static char month[][4] =
 		{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
 		 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
-	struct tm *tm = gmtime(&t);
-	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
-		   tm->tm_mday, month[tm->tm_mon], 1900 + tm->tm_year,
-		   tm->tm_hour, tm->tm_min, tm->tm_sec);
+	struct tm tm;
+	gmtime_r(&t, &tm);
+	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm.tm_wday],
+		   tm.tm_mday, month[tm.tm_mon], 1900 + tm.tm_year,
+		   tm.tm_hour, tm.tm_min, tm.tm_sec);
 }

 void cgit_print_error(const char *fmt, ...)
@ -54,28 +55,62 @@ const char *cgit_httpscheme(void)
 		return "http://";
 }

-const char *cgit_hosturl(void)
+char *cgit_hosturl(void)
 {
 	if (ctx.env.http_host)
-		return ctx.env.http_host;
+		return xstrdup(ctx.env.http_host);
 	if (!ctx.env.server_name)
 		return NULL;
 	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
-		return ctx.env.server_name;
+		return xstrdup(ctx.env.server_name);
 	return fmtalloc("%s:%s", ctx.env.server_name, ctx.env.server_port);
 }

-const char *cgit_currenturl(void)
+char *cgit_currenturl(void)
 {
-	if (!ctx.qry.url)
-		return cgit_rooturl();
 	const char *root = cgit_rooturl();
-	size_t len = strlen(root);
-	if (len && root[len - 1] == '/')
+
+	if (!ctx.qry.url)
+		return xstrdup(root);
+	if (root[0] && root[strlen(root) - 1] == '/')
 		return fmtalloc("%s%s", root, ctx.qry.url);
 	return fmtalloc("%s/%s", root, ctx.qry.url);
 }

+char *cgit_currentfullurl(void)
+{
+	const char *root = cgit_rooturl();
+	const char *orig_query = ctx.env.query_string ? ctx.env.query_string : "";
+	size_t len = strlen(orig_query);
+	char *query = xmalloc(len + 2), *start_url, *ret;
+
+	/* Remove all url=... parts from query string */
+	memcpy(query + 1, orig_query, len + 1);
+	query[0] = '?';
+	start_url = query;
+	while ((start_url = strstr(start_url, "url=")) != NULL) {
+		if (start_url[-1] == '?' || start_url[-1] == '&') {
+			const char *end_url = strchr(start_url, '&');
+			if (end_url)
+				memmove(start_url, end_url + 1, strlen(end_url));
+			else
+				start_url[0] = '\0';
+		} else
+			++start_url;
+	}
+	if (!query[1])
+		query[0] = '\0';
+
+	if (!ctx.qry.url)
+		ret = fmtalloc("%s%s", root, query);
+	else if (root[0] && root[strlen(root) - 1] == '/')
+		ret = fmtalloc("%s%s%s", root, ctx.qry.url, query);
+	else
+		ret = fmtalloc("%s/%s%s", root, ctx.qry.url, query);
+	free(query);
+	return ret;
+}
+
 const char *cgit_rooturl(void)
 {
 	if (ctx.cfg.virtual_root)
@ -132,33 +167,49 @@ const char *cgit_repobasename(const char *reponame)
 	static char rvbuf[1024];
 	int p;
 	const char *rv;
-	strncpy(rvbuf, reponame, sizeof(rvbuf));
-	if (rvbuf[sizeof(rvbuf)-1])
+	size_t len;
+
+	len = strlcpy(rvbuf, reponame, sizeof(rvbuf));
+	if (len >= sizeof(rvbuf))
 		die("cgit_repobasename: truncated repository name '%s'", reponame);
-	p = strlen(rvbuf)-1;
+	p = len - 1;
 	/* strip trailing slashes */
-	while (p && rvbuf[p] == '/') rvbuf[p--] = 0;
+	while (p && rvbuf[p] == '/')
+		rvbuf[p--] = '\0';
 	/* strip trailing .git */
 	if (p >= 3 && starts_with(&rvbuf[p-3], ".git")) {
-		p -= 3; rvbuf[p--] = 0;
+		p -= 3;
+		rvbuf[p--] = '\0';
 	}
 	/* strip more trailing slashes if any */
-	while ( p && rvbuf[p] == '/') rvbuf[p--] = 0;
+	while (p && rvbuf[p] == '/')
+		rvbuf[p--] = '\0';
 	/* find last slash in the remaining string */
-	rv = strrchr(rvbuf,'/');
+	rv = strrchr(rvbuf, '/');
 	if (rv)
 		return ++rv;
 	return rvbuf;
 }

+const char *cgit_snapshot_prefix(const struct cgit_repo *repo)
+{
+	if (repo->snapshot_prefix)
+		return repo->snapshot_prefix;
+
+	return cgit_repobasename(repo->url);
+}
+
 static void site_url(const char *page, const char *search, const char *sort, int ofs, int always_root)
 {
 	char *delim = "?";

 	if (always_root || page)
 		html_attr(cgit_rooturl());
-	else
-		html_attr(cgit_currenturl());
+	else {
+		char *currenturl = cgit_currenturl();
+		html_attr(currenturl);
+		free(currenturl);
+	}

 	if (page) {
 		htmlf("?p=%s", page);
@ -251,7 +302,7 @@ static char *repolink(const char *title, const char *class, const char *page,
 		}
 		delim = "&amp;";
 	}
-	if (head && strcmp(head, ctx.repo->defbranch)) {
+	if (head && ctx.repo->defbranch && strcmp(head, ctx.repo->defbranch)) {
 		html(delim);
 		html("h=");
 		html_url_arg(head);
@ -301,9 +352,16 @@ void cgit_plain_link(const char *name, const char *title, const char *class,
 	reporevlink("plain", name, title, class, head, rev, path);
 }

+void cgit_blame_link(const char *name, const char *title, const char *class,
+		     const char *head, const char *rev, const char *path)
+{
+	reporevlink("blame", name, title, class, head, rev, path);
+}
+
 void cgit_log_link(const char *name, const char *title, const char *class,
 		   const char *head, const char *rev, const char *path,
-		   int ofs, const char *grep, const char *pattern, int showmsg)
+		   int ofs, const char *grep, const char *pattern, int showmsg,
+		   int follow)
 {
 	char *delim;

@ -332,22 +390,20 @@ void cgit_log_link(const char *name, const char *title, const char *class,
 	if (showmsg) {
 		html(delim);
 		html("showmsg=1");
+		delim = "&amp;";
+	}
+	if (follow) {
+		html(delim);
+		html("follow=1");
 	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }

-void cgit_commit_link(char *name, const char *title, const char *class,
+void cgit_commit_link(const char *name, const char *title, const char *class,
 		      const char *head, const char *rev, const char *path)
 {
-	if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
-		name[ctx.cfg.max_msg_len] = '\0';
-		name[ctx.cfg.max_msg_len - 1] = '.';
-		name[ctx.cfg.max_msg_len - 2] = '.';
-		name[ctx.cfg.max_msg_len - 3] = '.';
-	}
-
 	char *delim;

 	delim = repolink(title, class, "commit", head, path);
@ -373,10 +429,18 @@ void cgit_commit_link(char *name, const char *title, const char *class,
 		html("ignorews=1");
 		delim = "&amp;";
 	}
+	if (ctx.qry.follow) {
+		html(delim);
+		html("follow=1");
+	}
 	html("'>");
-	if (name[0] != '\0')
-		html_txt(name);
-	else
+	if (name[0] != '\0') {
+		if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
+			html_ntxt(name, ctx.cfg.max_msg_len - 3);
+			html("...");
+		} else
+			html_txt(name);
+	} else
 		html_txt("(no commit message)");
 	html("</a>");
 }
@ -429,6 +493,10 @@ void cgit_diff_link(const char *name, const char *title, const char *class,
 		html("ignorews=1");
 		delim = "&amp;";
 	}
+	if (ctx.qry.follow) {
+		html(delim);
+		html("follow=1");
+	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
@ -454,41 +522,45 @@ static void cgit_self_link(char *name, const char *title, const char *class)
 	else if (!strcmp(ctx.qry.page, "summary"))
 		cgit_summary_link(name, title, class, ctx.qry.head);
 	else if (!strcmp(ctx.qry.page, "tag"))
-		cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
-			       ctx.qry.sha1 : ctx.qry.head);
+		cgit_tag_link(name, title, class, ctx.qry.has_oid ?
+			       ctx.qry.oid : ctx.qry.head);
 	else if (!strcmp(ctx.qry.page, "tree"))
 		cgit_tree_link(name, title, class, ctx.qry.head,
-			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			       ctx.qry.has_oid ? ctx.qry.oid : NULL,
 			       ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "plain"))
 		cgit_plain_link(name, title, class, ctx.qry.head,
-				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.has_oid ? ctx.qry.oid : NULL,
+				ctx.qry.path);
+	else if (!strcmp(ctx.qry.page, "blame"))
+		cgit_blame_link(name, title, class, ctx.qry.head,
+				ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "log"))
 		cgit_log_link(name, title, class, ctx.qry.head,
-			      ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			      ctx.qry.has_oid ? ctx.qry.oid : NULL,
 			      ctx.qry.path, ctx.qry.ofs,
 			      ctx.qry.grep, ctx.qry.search,
-			      ctx.qry.showmsg);
+			      ctx.qry.showmsg, ctx.qry.follow);
 	else if (!strcmp(ctx.qry.page, "commit"))
 		cgit_commit_link(name, title, class, ctx.qry.head,
-				 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				 ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				 ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "patch"))
 		cgit_patch_link(name, title, class, ctx.qry.head,
-				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "refs"))
 		cgit_refs_link(name, title, class, ctx.qry.head,
-			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			       ctx.qry.has_oid ? ctx.qry.oid : NULL,
 			       ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "snapshot"))
 		cgit_snapshot_link(name, title, class, ctx.qry.head,
-				   ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				   ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				   ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "diff"))
 		cgit_diff_link(name, title, class, ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.sha2,
+			       ctx.qry.oid, ctx.qry.oid2,
 			       ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "stats"))
 		cgit_stats_link(name, title, class, ctx.qry.head,
@ -508,7 +580,7 @@ void cgit_object_link(struct object *obj)
 {
 	char *page, *shortrev, *fullrev, *name;

-	fullrev = sha1_to_hex(obj->sha1);
+	fullrev = oid_to_hex(&obj->oid);
 	shortrev = xstrdup(fullrev);
 	shortrev[10] = '\0';
 	if (obj->type == OBJ_COMMIT) {
@ -521,7 +593,7 @@ void cgit_object_link(struct object *obj)
 		page = "tag";
 	else
 		page = "blob";
-	name = fmt("%s %s...", typename(obj->type), shortrev);
+	name = fmt("%s %s...", type_name(obj->type), shortrev);
 	reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 }

@ -590,39 +662,23 @@ void cgit_submodule_link(const char *class, char *path, const char *rev)
 		path[len - 1] = tail;
 }

-void cgit_print_date(time_t secs, const char *format, int local_time)
+const struct date_mode *cgit_date_mode(enum date_mode_type type)
 {
-	char buf[64];
-	struct tm *time;
-
-	if (!secs)
-		return;
-	if (local_time)
-		time = localtime(&secs);
-	else
-		time = gmtime(&secs);
-	strftime(buf, sizeof(buf)-1, format, time);
-	html_txt(buf);
+	static struct date_mode mode;
+	mode.type = type;
+	mode.local = ctx.cfg.local_time;
+	return &mode;
 }

-static void print_rel_date(time_t t, double value,
+static void print_rel_date(time_t t, int tz, double value,
 	const char *class, const char *suffix)
 {
-	char buf[64];
-	struct tm *time;
-
-	if (ctx.cfg.local_time)
-		time = localtime(&t);
-	else
-		time = gmtime(&t);
-	strftime(buf, sizeof(buf) - 1, FMT_LONGDATE, time);
-
-	htmlf("<span class='%s' title='", class);
-	html_attr(buf);
+	htmlf("<span class='%s' data-ut='%" PRIu64 "' title='", class, (uint64_t)t);
+	html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
 	htmlf("'>%.0f %s</span>", value, suffix);
 }

-void cgit_print_age(time_t t, time_t max_relative, const char *format)
+void cgit_print_age(time_t t, int tz, time_t max_relative)
 {
 	time_t now, secs;

@ -634,31 +690,35 @@ void cgit_print_age(time_t t, time_t max_relative, const char *format)
 		secs = 0;

 	if (secs > max_relative && max_relative >= 0) {
-		cgit_print_date(t, format, ctx.cfg.local_time);
+		html("<span title='");
+		html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
+		html("'>");
+		html_txt(show_date(t, tz, cgit_date_mode(DATE_SHORT)));
+		html("</span>");
 		return;
 	}

 	if (secs < TM_HOUR * 2) {
-		print_rel_date(t, secs * 1.0 / TM_MIN, "age-mins", "min.");
+		print_rel_date(t, tz, secs * 1.0 / TM_MIN, "age-mins", "min.");
 		return;
 	}
 	if (secs < TM_DAY * 2) {
-		print_rel_date(t, secs * 1.0 / TM_HOUR, "age-hours", "hours");
+		print_rel_date(t, tz, secs * 1.0 / TM_HOUR, "age-hours", "hours");
 		return;
 	}
 	if (secs < TM_WEEK * 2) {
-		print_rel_date(t, secs * 1.0 / TM_DAY, "age-days", "days");
+		print_rel_date(t, tz, secs * 1.0 / TM_DAY, "age-days", "days");
 		return;
 	}
 	if (secs < TM_MONTH * 2) {
-		print_rel_date(t, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
+		print_rel_date(t, tz, secs * 1.0 / TM_WEEK, "age-weeks", "weeks");
 		return;
 	}
 	if (secs < TM_YEAR * 2) {
-		print_rel_date(t, secs * 1.0 / TM_MONTH, "age-months", "months");
+		print_rel_date(t, tz, secs * 1.0 / TM_MONTH, "age-months", "months");
 		return;
 	}
-	print_rel_date(t, secs * 1.0 / TM_YEAR, "age-years", "years");
+	print_rel_date(t, tz, secs * 1.0 / TM_YEAR, "age-years", "years");
 }

 void cgit_print_http_headers(void)
@ -675,9 +735,11 @@ void cgit_print_http_headers(void)
 		htmlf("Content-Type: %s\n", ctx.page.mimetype);
 	if (ctx.page.size)
 		htmlf("Content-Length: %zd\n", ctx.page.size);
-	if (ctx.page.filename)
-		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
-		      ctx.page.filename);
+	if (ctx.page.filename) {
+		html("Content-Disposition: inline; filename=\"");
+		html_header_arg_in_quotes(ctx.page.filename);
+		html("\"\n");
+	}
 	if (!ctx.env.authenticated)
 		html("Cache-Control: no-cache, no-store\n");
 	htmlf("Last-Modified: %s\n", http_date(ctx.page.modified));
@ -689,6 +751,14 @@ void cgit_print_http_headers(void)
 		exit(0);
 }

+void cgit_redirect(const char *url, bool permanent)
+{
+	htmlf("Status: %d %s\n", permanent ? 301 : 302, permanent ? "Moved" : "Found");
+	html("Location: ");
+	html_url_path(url);
+	html("\n\n");
+}
+
 static void print_rel_vcs_link(const char *url)
 {
 	html("<link rel='vcs-git' href='");
@ -698,17 +768,50 @@ static void print_rel_vcs_link(const char *url)
 	html(" Git repository'/>\n");
 }

+static int emit_css_link(struct string_list_item *s, void *arg)
+{
+	/* Do not emit anything if css= is specified. */
+	if (s && *s->string == '\0')
+		return 0;
+
+	html("<link rel='stylesheet' type='text/css' href='");
+	if (s)
+		html_attr(s->string);
+	else
+		html_attr((const char *)arg);
+	html("'/>\n");
+
+	return 0;
+}
+
+static int emit_js_link(struct string_list_item *s, void *arg)
+{
+	/* Do not emit anything if js= is specified. */
+	if (s && *s->string == '\0')
+		return 0;
+
+	html("<script type='text/javascript' src='");
+	if (s)
+		html_attr(s->string);
+	else
+		html_attr((const char *)arg);
+	html("'></script>\n");
+
+	return 0;
+}
+
 void cgit_print_docstart(void)
 {
+	char *host = cgit_hosturl();
+
 	if (ctx.cfg.embedded) {
 		if (ctx.cfg.header)
 			html_include(ctx.cfg.header);
 		return;
 	}

-	const char *host = cgit_hosturl();
 	html(cgit_doctype);
-	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
+	html("<html lang='en'>\n");
 	html("<head>\n");
 	html("<title>");
 	html_txt(ctx.page.title);
@ -716,34 +819,48 @@ void cgit_print_docstart(void)
 	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 	if (ctx.cfg.robots && *ctx.cfg.robots)
 		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
-	html("<link rel='stylesheet' type='text/css' href='");
-	html_attr(ctx.cfg.css);
-	html("'/>\n");
+
+	if (ctx.cfg.css.items)
+		for_each_string_list(&ctx.cfg.css, emit_css_link, NULL);
+	else
+		emit_css_link(NULL, "/cgit.css");
+
+	if (ctx.cfg.js.items)
+		for_each_string_list(&ctx.cfg.js, emit_js_link, NULL);
+	else
+		emit_js_link(NULL, "/cgit.js");
+
 	if (ctx.cfg.favicon) {
 		html("<link rel='shortcut icon' href='");
 		html_attr(ctx.cfg.favicon);
 		html("'/>\n");
 	}
 	if (host && ctx.repo && ctx.qry.head) {
+		char *fileurl;
 		struct strbuf sb = STRBUF_INIT;
 		strbuf_addf(&sb, "h=%s", ctx.qry.head);

 		html("<link rel='alternate' title='Atom feed' href='");
 		html(cgit_httpscheme());
-		html_attr(cgit_hosturl());
-		html_attr(cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
-				       sb.buf));
+		html_attr(host);
+		fileurl = cgit_fileurl(ctx.repo->url, "atom", ctx.qry.vpath,
+				       sb.buf);
+		html_attr(fileurl);
 		html("' type='application/atom+xml'/>\n");
 		strbuf_release(&sb);
+		free(fileurl);
 	}
 	if (ctx.repo)
 		cgit_add_clone_urls(print_rel_vcs_link);
 	if (ctx.cfg.head_include)
 		html_include(ctx.cfg.head_include);
+	if (ctx.repo && ctx.repo->extra_head_content)
+		html(ctx.repo->extra_head_content);
 	html("</head>\n");
 	html("<body>\n");
 	if (ctx.cfg.header)
 		html_include(ctx.cfg.header);
+	free(host);
 }

 void cgit_print_docend(void)
@ -758,15 +875,40 @@ void cgit_print_docend(void)
 	if (ctx.cfg.footer)
 		html_include(ctx.cfg.footer);
 	else {
-		htmlf("<div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit %s</a> at ",
-			cgit_version);
-		cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
+		htmlf("<div class='footer'>generated by <a href='https://git.zx2c4.com/cgit/about/'>cgit %s</a> "
+			"(<a href='https://git-scm.com/'>git %s</a>) at ", cgit_version, git_version_string);
+		html_txt(show_date(time(NULL), 0, cgit_date_mode(DATE_ISO8601)));
 		html("</div>\n");
 	}
 	html("</div> <!-- id=cgit -->\n");
 	html("</body>\n</html>\n");
 }

+void cgit_print_error_page(int code, const char *msg, const char *fmt, ...)
+{
+	va_list ap;
+	ctx.page.expires = ctx.cfg.cache_dynamic_ttl;
+	ctx.page.status = code;
+	ctx.page.statusmsg = msg;
+	cgit_print_layout_start();
+	va_start(ap, fmt);
+	cgit_vprint_error(fmt, ap);
+	va_end(ap);
+	cgit_print_layout_end();
+}
+
+void cgit_print_layout_start(void)
+{
+	cgit_print_http_headers();
+	cgit_print_docstart();
+	cgit_print_pageheader();
+}
+
+void cgit_print_layout_end(void)
+{
+	cgit_print_docend();
+}
+
 static void add_clone_urls(void (*fn)(const char *), char *txt, char *suffix)
 {
 	struct strbuf **url_list = strbuf_split_str(txt, ' ', 0);
@ -792,7 +934,7 @@ void cgit_add_clone_urls(void (*fn)(const char *))
 		add_clone_urls(fn, ctx.cfg.clone_prefix, ctx.repo->url);
 }

-static int print_branch_option(const char *refname, const unsigned char *sha1,
+static int print_branch_option(const char *refname, const struct object_id *oid,
 			       int flags, void *cb_data)
 {
 	char *name = (char *)refname;
@ -817,10 +959,10 @@ void cgit_add_hidden_formfields(int incl_head, int incl_search,
 	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 		html_hidden("h", ctx.qry.head);

-	if (ctx.qry.sha1)
-		html_hidden("id", ctx.qry.sha1);
-	if (ctx.qry.sha2)
-		html_hidden("id2", ctx.qry.sha2);
+	if (ctx.qry.oid)
+		html_hidden("id", ctx.qry.oid);
+	if (ctx.qry.oid2)
+		html_hidden("id2", ctx.qry.oid2);
 	if (ctx.qry.showmsg)
 		html_hidden("showmsg", "1");

@ -834,6 +976,9 @@ void cgit_add_hidden_formfields(int incl_head, int incl_search,

 static const char *hc(const char *page)
 {
+	if (!ctx.qry.page)
+		return NULL;
+
 	return strcmp(ctx.qry.page, page) ? NULL : "active";
 }

@ -841,12 +986,13 @@ static void cgit_print_path_crumbs(char *path)
 {
 	char *old_path = ctx.qry.path;
 	char *p = path, *q, *end = path + strlen(path);
+	int levels = 0;

 	ctx.qry.path = NULL;
 	cgit_self_link("root", NULL, NULL);
 	ctx.qry.path = p = path;
 	while (p < end) {
-		if (!(q = strchr(p, '/')))
+		if (!(q = strchr(p, '/')) || levels > 15)
 			q = end;
 		*q = '\0';
 		html_txt("/");
@ -854,6 +1000,7 @@ static void cgit_print_path_crumbs(char *path)
 		if (q < end)
 			*q = '/';
 		p = q + 1;
+		++levels;
 	}
 	ctx.qry.path = old_path;
 }
@ -888,15 +1035,17 @@ static void print_header(void)
 	if (ctx.repo) {
 		cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 		html(" : ");
-		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
+		cgit_summary_link(ctx.repo->name, NULL, NULL, NULL);
 		if (ctx.env.authenticated) {
 			html("</td><td class='form'>");
-			html("<form method='get' action=''>\n");
+			html("<form method='get'>\n");
 			cgit_add_hidden_formfields(0, 1, ctx.qry.page);
 			html("<select name='h' onchange='this.form.submit();'>\n");
 			for_each_branch_ref(print_branch_option, ctx.qry.head);
+			if (ctx.repo->enable_remote_branches)
+				for_each_remote_ref(print_branch_option, ctx.qry.head);
 			html("</select> ");
-			html("<input type='submit' name='' value='switch'/>");
+			html("<input type='submit' value='switch'/>");
 			html("</form>");
 		}
 	} else
@ -907,12 +1056,16 @@ static void print_header(void)
 	if (ctx.repo) {
 		html_txt(ctx.repo->desc);
 		html("</td><td class='sub right'>");
-		html_txt(ctx.repo->owner);
+		if (ctx.repo->owner_filter) {
+			cgit_open_filter(ctx.repo->owner_filter);
+			html_txt(ctx.repo->owner);
+			cgit_close_filter(ctx.repo->owner_filter);
+		} else {
+			html_txt(ctx.repo->owner);
+		}
 	} else {
 		if (ctx.cfg.root_desc)
 			html_txt(ctx.cfg.root_desc);
-		else if (ctx.cfg.index_info)
-			html_include(ctx.cfg.index_info);
 	}
 	html("</td></tr></table>\n");
 }
@ -932,24 +1085,36 @@ void cgit_print_pageheader(void)
 		cgit_summary_link("summary", NULL, hc("summary"),
 				  ctx.qry.head);
 		cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
-			       ctx.qry.sha1, NULL);
+			       ctx.qry.oid, NULL);
 		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 			      NULL, ctx.qry.vpath, 0, NULL, NULL,
-			      ctx.qry.showmsg);
-		cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.vpath);
+			      ctx.qry.showmsg, ctx.qry.follow);
+		if (ctx.qry.page && !strcmp(ctx.qry.page, "blame"))
+			cgit_blame_link("blame", NULL, hc("blame"), ctx.qry.head,
+				        ctx.qry.oid, ctx.qry.vpath);
+		else
+			cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
+				       ctx.qry.oid, ctx.qry.vpath);
 		cgit_commit_link("commit", NULL, hc("commit"),
-				 ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
+				 ctx.qry.head, ctx.qry.oid, ctx.qry.vpath);
 		cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
+			       ctx.qry.oid, ctx.qry.oid2, ctx.qry.vpath);
 		if (ctx.repo->max_stats)
 			cgit_stats_link("stats", NULL, hc("stats"),
 					ctx.qry.head, ctx.qry.vpath);
+		if (ctx.repo->homepage) {
+			html("<a href='");
+			html_attr(ctx.repo->homepage);
+			html("'>homepage</a>");
+		}
 		html("</td><td class='form'>");
 		html("<form class='right' method='get' action='");
-		if (ctx.cfg.virtual_root)
-			html_url_path(cgit_fileurl(ctx.qry.repo, "log",
-						   ctx.qry.vpath, NULL));
+		if (ctx.cfg.virtual_root) {
+			char *fileurl = cgit_fileurl(ctx.qry.repo, "log",
+						   ctx.qry.vpath, NULL);
+			html_url_path(fileurl);
+			free(fileurl);
+		}
 		html("'>\n");
 		cgit_add_hidden_formfields(1, 0, "log");
 		html("<select name='qt'>\n");
@ -958,31 +1123,41 @@ void cgit_print_pageheader(void)
 		html_option("committer", "committer", ctx.qry.grep);
 		html_option("range", "range", ctx.qry.grep);
 		html("</select>\n");
-		html("<input class='txt' type='text' size='10' name='q' value='");
+		html("<input class='txt' type='search' size='10' name='q' value='");
 		html_attr(ctx.qry.search);
 		html("'/>\n");
 		html("<input type='submit' value='search'/>\n");
 		html("</form>\n");
 	} else if (ctx.env.authenticated) {
+		char *currenturl = cgit_currenturl();
 		site_link(NULL, "index", NULL, hc("repolist"), NULL, NULL, 0, 1);
 		if (ctx.cfg.root_readme)
 			site_link("about", "about", NULL, hc("about"),
 				  NULL, NULL, 0, 1);
 		html("</td><td class='form'>");
 		html("<form method='get' action='");
-		html_attr(cgit_currenturl());
+		html_attr(currenturl);
 		html("'>\n");
-		html("<input type='text' name='q' size='10' value='");
+		html("<input type='search' name='q' size='10' value='");
 		html_attr(ctx.qry.search);
 		html("'/>\n");
 		html("<input type='submit' value='search'/>\n");
 		html("</form>");
+		free(currenturl);
 	}
 	html("</td></tr></table>\n");
-	if (ctx.env.authenticated && ctx.qry.vpath) {
+	if (ctx.env.authenticated && ctx.repo && ctx.qry.vpath) {
 		html("<div class='path'>");
 		html("path: ");
 		cgit_print_path_crumbs(ctx.qry.vpath);
+		if (ctx.cfg.enable_follow_links && !strcmp(ctx.qry.page, "log")) {
+			html(" (");
+			ctx.qry.follow = !ctx.qry.follow;
+			cgit_self_link(ctx.qry.follow ? "follow" : "unfollow",
+					NULL, NULL);
+			ctx.qry.follow = !ctx.qry.follow;
+			html(")");
+		}
 		html("</div>");
 	}
 	html("<div class='content'>");
@ -1003,27 +1178,80 @@ void cgit_print_filemode(unsigned short mode)
 	html_fileperm(mode);
 }

-void cgit_print_snapshot_links(const char *repo, const char *head,
-			       const char *hex, int snapshots)
+void cgit_compose_snapshot_prefix(struct strbuf *filename, const char *base,
+				  const char *ref)
 {
-	const struct cgit_snapshot_format* f;
+	struct object_id oid;
+
+	/*
+	 * Prettify snapshot names by stripping leading "v" or "V" if the tag
+	 * name starts with {v,V}[0-9] and the prettify mapping is injective,
+	 * i.e. each stripped tag can be inverted without ambiguities.
+	 */
+	if (get_oid(fmt("refs/tags/%s", ref), &oid) == 0 &&
+	    (ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]) &&
+	    ((get_oid(fmt("refs/tags/%s", ref + 1), &oid) == 0) +
+	     (get_oid(fmt("refs/tags/v%s", ref + 1), &oid) == 0) +
+	     (get_oid(fmt("refs/tags/V%s", ref + 1), &oid) == 0) == 1))
+		ref++;
+
+	strbuf_addf(filename, "%s-%s", base, ref);
+}
+
+void cgit_print_snapshot_links(const struct cgit_repo *repo, const char *ref,
+			       const char *separator)
+{
+	const struct cgit_snapshot_format *f;
 	struct strbuf filename = STRBUF_INIT;
+	const char *basename;
 	size_t prefixlen;
-	unsigned char sha1[20];

-	if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
-	    (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
-		hex++;
-	strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
+	basename = cgit_snapshot_prefix(repo);
+	if (starts_with(ref, basename))
+		strbuf_addstr(&filename, ref);
+	else
+		cgit_compose_snapshot_prefix(&filename, basename, ref);
+
 	prefixlen = filename.len;
 	for (f = cgit_snapshot_formats; f->suffix; f++) {
-		if (!(snapshots & f->bit))
+		if (!(repo->snapshots & cgit_snapshot_format_bit(f)))
 			continue;
 		strbuf_setlen(&filename, prefixlen);
 		strbuf_addstr(&filename, f->suffix);
 		cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL,
 				   filename.buf);
-		html("<br/>");
+		if (cgit_snapshot_get_sig(ref, f)) {
+			strbuf_addstr(&filename, ".asc");
+			html(" (");
+			cgit_snapshot_link("sig", NULL, NULL, NULL, NULL,
+					   filename.buf);
+			html(")");
+		} else if (starts_with(f->suffix, ".tar") && cgit_snapshot_get_sig(ref, &cgit_snapshot_formats[0])) {
+			strbuf_setlen(&filename, strlen(filename.buf) - strlen(f->suffix));
+			strbuf_addstr(&filename, ".tar.asc");
+			html(" (");
+			cgit_snapshot_link("sig", NULL, NULL, NULL, NULL,
+					   filename.buf);
+			html(")");
+		}
+		html(separator);
 	}
 	strbuf_release(&filename);
 }
+
+void cgit_set_title_from_path(const char *path)
+{
+	struct strbuf sb = STRBUF_INIT;
+	const char *slash, *last_slash;
+
+	if (!path)
+		return;
+
+	for (last_slash = path + strlen(path); (slash = memrchr(path, '/', last_slash - path)) != NULL; last_slash = slash) {
+		strbuf_add(&sb, slash + 1, last_slash - slash - 1);
+		strbuf_addstr(&sb, " \xc2\xab ");
+	}
+	strbuf_add(&sb, path, last_slash - path);
+	strbuf_addf(&sb, " - %s", ctx.page.title);
+	ctx.page.title = strbuf_detach(&sb, NULL);
+}
--- a/ui-shared.h
+++ b/ui-shared.h
@ -1,11 +1,12 @@
 #ifndef UI_SHARED_H
 #define UI_SHARED_H

-extern const char *cgit_httpscheme();
-extern const char *cgit_hosturl();
-extern const char *cgit_rooturl();
-extern const char *cgit_currenturl();
-extern const char *cgit_loginurl();
+extern const char *cgit_httpscheme(void);
+extern char *cgit_hosturl(void);
+extern const char *cgit_rooturl(void);
+extern char *cgit_currenturl(void);
+extern char *cgit_currentfullurl(void);
+extern const char *cgit_loginurl(void);
 extern char *cgit_repourl(const char *reponame);
 extern char *cgit_fileurl(const char *reponame, const char *pagename,
 			  const char *filename, const char *query);
@ -26,11 +27,14 @@ extern void cgit_tree_link(const char *name, const char *title,
 extern void cgit_plain_link(const char *name, const char *title,
 			    const char *class, const char *head,
 			    const char *rev, const char *path);
+extern void cgit_blame_link(const char *name, const char *title,
+			    const char *class, const char *head,
+			    const char *rev, const char *path);
 extern void cgit_log_link(const char *name, const char *title,
 			  const char *class, const char *head, const char *rev,
 			  const char *path, int ofs, const char *grep,
-			  const char *pattern, int showmsg);
-extern void cgit_commit_link(char *name, const char *title,
+			  const char *pattern, int showmsg, int follow);
+extern void cgit_commit_link(const char *name, const char *title,
 			     const char *class, const char *head,
 			     const char *rev, const char *path);
 extern void cgit_patch_link(const char *name, const char *title,
@ -54,19 +58,30 @@ extern void cgit_object_link(struct object *obj);
 extern void cgit_submodule_link(const char *class, char *path,
 				const char *rev);

+extern void cgit_print_layout_start(void);
+extern void cgit_print_layout_end(void);
+
 __attribute__((format (printf,1,2)))
 extern void cgit_print_error(const char *fmt, ...);
 __attribute__((format (printf,1,0)))
 extern void cgit_vprint_error(const char *fmt, va_list ap);
-extern void cgit_print_date(time_t secs, const char *format, int local_time);
-extern void cgit_print_age(time_t t, time_t max_relative, const char *format);
+extern const struct date_mode *cgit_date_mode(enum date_mode_type type);
+extern void cgit_print_age(time_t t, int tz, time_t max_relative);
 extern void cgit_print_http_headers(void);
+extern void cgit_redirect(const char *url, bool permanent);
 extern void cgit_print_docstart(void);
-extern void cgit_print_docend();
+extern void cgit_print_docend(void);
+__attribute__((format (printf,3,4)))
+extern void cgit_print_error_page(int code, const char *msg, const char *fmt, ...);
 extern void cgit_print_pageheader(void);
 extern void cgit_print_filemode(unsigned short mode);
-extern void cgit_print_snapshot_links(const char *repo, const char *head,
-				      const char *hex, int snapshots);
+extern void cgit_compose_snapshot_prefix(struct strbuf *filename,
+					 const char *base, const char *ref);
+extern void cgit_print_snapshot_links(const struct cgit_repo *repo,
+				      const char *ref, const char *separator);
+extern const char *cgit_snapshot_prefix(const struct cgit_repo *repo);
 extern void cgit_add_hidden_formfields(int incl_head, int incl_search,
 				       const char *page);
+
+extern void cgit_set_title_from_path(const char *path);
 #endif /* UI_SHARED_H */
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@ -13,32 +13,32 @@

 static int write_archive_type(const char *format, const char *hex, const char *prefix)
 {
-	struct argv_array argv = ARGV_ARRAY_INIT;
+	struct strvec argv = STRVEC_INIT;
 	const char **nargv;
 	int result;
-	argv_array_push(&argv, "snapshot");
-	argv_array_push(&argv, format);
+	strvec_push(&argv, "snapshot");
+	strvec_push(&argv, format);
 	if (prefix) {
 		struct strbuf buf = STRBUF_INIT;
 		strbuf_addstr(&buf, prefix);
 		strbuf_addch(&buf, '/');
-		argv_array_push(&argv, "--prefix");
-		argv_array_push(&argv, buf.buf);
+		strvec_push(&argv, "--prefix");
+		strvec_push(&argv, buf.buf);
 		strbuf_release(&buf);
 	}
-	argv_array_push(&argv, hex);
+	strvec_push(&argv, hex);
 	/*
 	 * Now we need to copy the pointers to arguments into a new
 	 * structure because write_archive will rearrange its arguments
 	 * which may result in duplicated/missing entries causing leaks
-	 * or double-frees in argv_array_clear.
+	 * or double-frees in strvec_clear.
 	 */
-	nargv = xmalloc(sizeof(char *) * (argv.argc + 1));
-	/* argv_array guarantees a trailing NULL entry. */
-	memcpy(nargv, argv.argv, sizeof(char *) * (argv.argc + 1));
+	nargv = xmalloc(sizeof(char *) * (argv.nr + 1));
+	/* strvec guarantees a trailing NULL entry. */
+	memcpy(nargv, argv.v, sizeof(char *) * (argv.nr + 1));

-	result = write_archive(argv.argc, nargv, NULL, 1, NULL, 0);
-	argv_array_clear(&argv);
+	result = write_archive(argv.nr, nargv, NULL, the_repository, NULL, 0);
+	strvec_clear(&argv);
 	free(nargv);
 	return result;
 }
@ -79,21 +79,61 @@ static int write_tar_bzip2_archive(const char *hex, const char *prefix)
 	return write_compressed_tar_archive(hex, prefix, argv);
 }

+static int write_tar_lzip_archive(const char *hex, const char *prefix)
+{
+	char *argv[] = { "lzip", NULL };
+	return write_compressed_tar_archive(hex, prefix, argv);
+}
+
 static int write_tar_xz_archive(const char *hex, const char *prefix)
 {
 	char *argv[] = { "xz", NULL };
 	return write_compressed_tar_archive(hex, prefix, argv);
 }

+static int write_tar_zstd_archive(const char *hex, const char *prefix)
+{
+	char *argv[] = { "zstd", "-T0", NULL };
+	return write_compressed_tar_archive(hex, prefix, argv);
+}
+
 const struct cgit_snapshot_format cgit_snapshot_formats[] = {
-	{ ".zip", "application/x-zip", write_zip_archive, 0x01 },
-	{ ".tar.gz", "application/x-gzip", write_tar_gzip_archive, 0x02 },
-	{ ".tar.bz2", "application/x-bzip2", write_tar_bzip2_archive, 0x04 },
-	{ ".tar", "application/x-tar", write_tar_archive, 0x08 },
-	{ ".tar.xz", "application/x-xz", write_tar_xz_archive, 0x10 },
+	/* .tar must remain the 0 index */
+	{ ".tar",	"application/x-tar",	write_tar_archive	},
+	{ ".tar.gz",	"application/x-gzip",	write_tar_gzip_archive	},
+	{ ".tar.bz2",	"application/x-bzip2",	write_tar_bzip2_archive	},
+	{ ".tar.lz",	"application/x-lzip",	write_tar_lzip_archive	},
+	{ ".tar.xz",	"application/x-xz",	write_tar_xz_archive	},
+	{ ".tar.zst",	"application/x-zstd",	write_tar_zstd_archive	},
+	{ ".zip",	"application/x-zip",	write_zip_archive	},
 	{ NULL }
 };

+static struct notes_tree snapshot_sig_notes[ARRAY_SIZE(cgit_snapshot_formats)];
+
+const struct object_id *cgit_snapshot_get_sig(const char *ref,
+					      const struct cgit_snapshot_format *f)
+{
+	struct notes_tree *tree;
+	struct object_id oid;
+
+	if (get_oid(ref, &oid))
+		return NULL;
+
+	tree = &snapshot_sig_notes[f - &cgit_snapshot_formats[0]];
+	if (!tree->initialized) {
+		struct strbuf notes_ref = STRBUF_INIT;
+
+		strbuf_addf(&notes_ref, "refs/notes/signatures/%s",
+			    f->suffix + 1);
+
+		init_notes(tree, notes_ref.buf, combine_notes_ignore, 0);
+		strbuf_release(&notes_ref);
+	}
+
+	return get_note(tree, &oid);
+}
+
 static const struct cgit_snapshot_format *get_format(const char *filename)
 {
 	const struct cgit_snapshot_format *fmt;
@ -105,28 +145,69 @@ static const struct cgit_snapshot_format *get_format(const char *filename)
 	return NULL;
 }

+const unsigned cgit_snapshot_format_bit(const struct cgit_snapshot_format *f)
+{
+	return BIT(f - &cgit_snapshot_formats[0]);
+}
+
 static int make_snapshot(const struct cgit_snapshot_format *format,
 			 const char *hex, const char *prefix,
 			 const char *filename)
 {
-	unsigned char sha1[20];
+	struct object_id oid;

-	if (get_sha1(hex, sha1)) {
-		cgit_print_error("Bad object id: %s", hex);
+	if (get_oid(hex, &oid)) {
+		cgit_print_error_page(404, "Not found",
+				"Bad object id: %s", hex);
 		return 1;
 	}
-	if (!lookup_commit_reference(sha1)) {
-		cgit_print_error("Not a commit reference: %s", hex);
+	if (!lookup_commit_reference(the_repository, &oid)) {
+		cgit_print_error_page(400, "Bad request",
+				"Not a commit reference: %s", hex);
 		return 1;
 	}
-	ctx.page.etag = sha1_to_hex(sha1);
+	ctx.page.etag = oid_to_hex(&oid);
 	ctx.page.mimetype = xstrdup(format->mimetype);
 	ctx.page.filename = xstrdup(filename);
 	cgit_print_http_headers();
+	init_archivers();
 	format->write_func(hex, prefix);
 	return 0;
 }

+static int write_sig(const struct cgit_snapshot_format *format,
+		     const char *hex, const char *archive,
+		     const char *filename)
+{
+	const struct object_id *note = cgit_snapshot_get_sig(hex, format);
+	enum object_type type;
+	unsigned long size;
+	char *buf;
+
+	if (!note) {
+		cgit_print_error_page(404, "Not found",
+				"No signature for %s", archive);
+		return 0;
+	}
+
+	buf = read_object_file(note, &type, &size);
+	if (!buf) {
+		cgit_print_error_page(404, "Not found", "Not found");
+		return 0;
+	}
+
+	html("X-Content-Type-Options: nosniff\n");
+	html("Content-Security-Policy: default-src 'none'\n");
+	ctx.page.etag = oid_to_hex(note);
+	ctx.page.mimetype = xstrdup("application/pgp-signature");
+	ctx.page.filename = xstrdup(filename);
+	cgit_print_http_headers();
+
+	html_raw(buf, size);
+	free(buf);
+	return 0;
+}
+
 /* Try to guess the requested revision from the requested snapshot name.
 * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become
 * "cgit-0.7.2". If this is a valid commit object name we've got a winner.
@ -137,21 +218,22 @@ static int make_snapshot(const struct cgit_snapshot_format *format,
 * pending a 'v' or a 'V' to the remaining snapshot name ("0.7.2" ->
 * "v0.7.2") gives us something valid.
 */
-static const char *get_ref_from_filename(const char *url, const char *filename,
+static const char *get_ref_from_filename(const struct cgit_repo *repo,
+					 const char *filename,
 					 const struct cgit_snapshot_format *format)
 {
 	const char *reponame;
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct strbuf snapshot = STRBUF_INIT;
 	int result = 1;

 	strbuf_addstr(&snapshot, filename);
 	strbuf_setlen(&snapshot, snapshot.len - strlen(format->suffix));

-	if (get_sha1(snapshot.buf, sha1) == 0)
+	if (get_oid(snapshot.buf, &oid) == 0)
 		goto out;

-	reponame = cgit_repobasename(url);
+	reponame = cgit_snapshot_prefix(repo);
 	if (starts_with(snapshot.buf, reponame)) {
 		const char *new_start = snapshot.buf;
 		new_start += strlen(reponame);
@ -160,15 +242,15 @@ static const char *get_ref_from_filename(const char *url, const char *filename,
 		strbuf_splice(&snapshot, 0, new_start - snapshot.buf, "", 0);
 	}

-	if (get_sha1(snapshot.buf, sha1) == 0)
+	if (get_oid(snapshot.buf, &oid) == 0)
 		goto out;

 	strbuf_insert(&snapshot, 0, "v", 1);
-	if (get_sha1(snapshot.buf, sha1) == 0)
+	if (get_oid(snapshot.buf, &oid) == 0)
 		goto out;

 	strbuf_splice(&snapshot, 0, 1, "V", 1);
-	if (get_sha1(snapshot.buf, sha1) == 0)
+	if (get_oid(snapshot.buf, &oid) == 0)
 		goto out;

 	result = 0;
@ -178,42 +260,40 @@ out:
 	return result ? strbuf_detach(&snapshot, NULL) : NULL;
 }

-__attribute__((format (printf, 1, 2)))
-static void show_error(char *fmt, ...)
-{
-	va_list ap;
-
-	ctx.page.mimetype = "text/html";
-	cgit_print_http_headers();
-	cgit_print_docstart();
-	cgit_print_pageheader();
-	va_start(ap, fmt);
-	cgit_vprint_error(fmt, ap);
-	va_end(ap);
-	cgit_print_docend();
-}
-
 void cgit_print_snapshot(const char *head, const char *hex,
 			 const char *filename, int dwim)
 {
 	const struct cgit_snapshot_format* f;
+	const char *sig_filename = NULL;
+	char *adj_filename = NULL;
 	char *prefix = NULL;

 	if (!filename) {
-		show_error("No snapshot name specified");
+		cgit_print_error_page(400, "Bad request",
+				"No snapshot name specified");
 		return;
 	}

+	if (ends_with(filename, ".asc")) {
+		sig_filename = filename;
+
+		/* Strip ".asc" from filename for common format processing */
+		adj_filename = xstrdup(filename);
+		adj_filename[strlen(adj_filename) - 4] = '\0';
+		filename = adj_filename;
+	}
+
 	f = get_format(filename);
-	if (!f) {
-		show_error("Unsupported snapshot format: %s", filename);
+	if (!f || (!sig_filename && !(ctx.repo->snapshots & cgit_snapshot_format_bit(f)))) {
+		cgit_print_error_page(400, "Bad request",
+				"Unsupported snapshot format: %s", filename);
 		return;
 	}

 	if (!hex && dwim) {
-		hex = get_ref_from_filename(ctx.repo->url, filename, f);
+		hex = get_ref_from_filename(ctx.repo, filename, f);
 		if (hex == NULL) {
-			html_status(404, "Not found", 0);
+			cgit_print_error_page(404, "Not found", "Not found");
 			return;
 		}
 		prefix = xstrdup(filename);
@ -224,8 +304,13 @@ void cgit_print_snapshot(const char *head, const char *hex,
 		hex = head;

 	if (!prefix)
-		prefix = xstrdup(cgit_repobasename(ctx.repo->url));
+		prefix = xstrdup(cgit_snapshot_prefix(ctx.repo));
+
+	if (sig_filename)
+		write_sig(f, hex, filename, sig_filename);
+	else
+		make_snapshot(f, hex, prefix, filename);

-	make_snapshot(f, hex, prefix, filename);
 	free(prefix);
+	free(adj_filename);
 }
--- a/ui-ssdiff.c
+++ b/ui-ssdiff.c
@ -92,7 +92,7 @@ static char *longest_common_subsequence(char *A, char *B)
 static int line_from_hunk(char *line, char type)
 {
 	char *buf1, *buf2;
-	int len;
+	int len, res;

 	buf1 = strchr(line, type);
 	if (buf1 == NULL)
@ -103,9 +103,8 @@ static int line_from_hunk(char *line, char type)
 		return 0;
 	len = buf2 - buf1;
 	buf2 = xmalloc(len + 1);
-	strncpy(buf2, buf1, len);
-	buf2[len] = '\0';
-	int res = atoi(buf2);
+	strlcpy(buf2, buf1, len + 1);
+	res = atoi(buf2);
 	free(buf2);
 	return res;
 }
@ -114,11 +113,11 @@ static char *replace_tabs(char *line)
 {
 	char *prev_buf = line;
 	char *cur_buf;
-	int linelen = strlen(line);
+	size_t linelen = strlen(line);
 	int n_tabs = 0;
 	int i;
 	char *result;
-	char *spaces = "        ";
+	size_t result_len;

 	if (linelen == 0) {
 		result = xmalloc(1);
@ -126,20 +125,26 @@ static char *replace_tabs(char *line)
 		return result;
 	}

-	for (i = 0; i < linelen; i++)
+	for (i = 0; i < linelen; i++) {
 		if (line[i] == '\t')
 			n_tabs += 1;
-	result = xmalloc(linelen + n_tabs * 8 + 1);
+	}
+	result_len = linelen + n_tabs * 8;
+	result = xmalloc(result_len + 1);
 	result[0] = '\0';

-	while (1) {
+	for (;;) {
 		cur_buf = strchr(prev_buf, '\t');
 		if (!cur_buf) {
-			strcat(result, prev_buf);
+			linelen = strlen(result);
+			strlcpy(&result[linelen], prev_buf, result_len - linelen + 1);
 			break;
 		} else {
-			strncat(result, prev_buf, cur_buf - prev_buf);
-			strncat(result, spaces, 8 - (strlen(result) % 8));
+			linelen = strlen(result);
+			strlcpy(&result[linelen], prev_buf, cur_buf - prev_buf + 1);
+			linelen = strlen(result);
+			memset(&result[linelen], ' ', 8 - (linelen % 8));
+			result[linelen + 8 - (linelen % 8)] = '\0';
 		}
 		prev_buf = cur_buf + 1;
 	}
@ -204,11 +209,13 @@ static void print_part_with_lcs(char *class, char *line, char *lcs)
 			}
 		} else if (line[i] == lcs[j]) {
 			same = 1;
-			htmlf("</span>");
+			html("</span>");
 			j += 1;
 		}
 		html_txt(c);
 	}
+	if (!same)
+		html("</span>");
 }

 static void print_ssdiff_line(char *class,
@ -229,12 +236,14 @@ static void print_ssdiff_line(char *class,
 	if (old_line_no > 0) {
 		struct diff_filespec *old_file = cgit_get_current_old_file();
 		char *lineno_str = fmt("n%d", old_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_sha1(old_file->sha1)?"HEAD":sha1_to_hex(old_rev_sha1), lineno_str);
+		char *id_str = fmt("id=%s#%s", is_null_oid(&old_file->oid)?"HEAD":oid_to_hex(old_rev_oid), lineno_str);
+		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str);
 		html("<td class='lineno'><a href='");
-		html(cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str));
-		htmlf("' id='%s'>%s</a>", lineno_str, lineno_str + 1);
+		html(fileurl);
+		htmlf("'>%s</a>", lineno_str + 1);
 		html("</td>");
 		htmlf("<td class='%s'>", class);
+		free(fileurl);
 	} else if (old_line)
 		htmlf("<td class='lineno'></td><td class='%s'>", class);
 	else
@ -250,12 +259,14 @@ static void print_ssdiff_line(char *class,
 	if (new_line_no > 0) {
 		struct diff_filespec *new_file = cgit_get_current_new_file();
 		char *lineno_str = fmt("n%d", new_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_sha1(new_file->sha1)?"HEAD":sha1_to_hex(new_rev_sha1), lineno_str);
+		char *id_str = fmt("id=%s#%s", is_null_oid(&new_file->oid)?"HEAD":oid_to_hex(new_rev_oid), lineno_str);
+		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str);
 		html("<td class='lineno'><a href='");
-		html(cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str));
-		htmlf("' id='%s'>%s</a>", lineno_str, lineno_str + 1);
+		html(fileurl);
+		htmlf("'>%s</a>", lineno_str + 1);
 		html("</td>");
 		htmlf("<td class='%s'>", class);
+		free(fileurl);
 	} else if (new_line)
 		htmlf("<td class='lineno'></td><td class='%s'>", class);
 	else
@ -398,7 +409,7 @@ void cgit_ssdiff_header_begin(void)

 void cgit_ssdiff_header_end(void)
 {
-	html("</td><tr>");
+	html("</td></tr>");
 }

 void cgit_ssdiff_footer(void)
--- a/ui-ssdiff.h
+++ b/ui-ssdiff.h
@ -13,13 +13,13 @@
 #endif
 #define MAX_SSDIFF_SIZE ((MAX_SSDIFF_M) * (MAX_SSDIFF_N))

-extern void cgit_ssdiff_print_deferred_lines();
+extern void cgit_ssdiff_print_deferred_lines(void);

 extern void cgit_ssdiff_line_cb(char *line, int len);

-extern void cgit_ssdiff_header_begin();
-extern void cgit_ssdiff_header_end();
+extern void cgit_ssdiff_header_begin(void);
+extern void cgit_ssdiff_header_end(void);

-extern void cgit_ssdiff_footer();
+extern void cgit_ssdiff_footer(void);

 #endif /* UI_SSDIFF_H */
--- a/ui-stats.c
+++ b/ui-stats.c
@ -3,12 +3,6 @@
 #include "html.h"
 #include "ui-shared.h"

-#ifdef NO_C99_FORMAT
-#define SZ_FMT "%u"
-#else
-#define SZ_FMT "%zu"
-#endif
-
 struct authorstat {
 	long total;
 	struct string_list list;
@ -172,8 +166,9 @@ static void add_commit(struct string_list *authors, struct commit *commit,
 	struct authorstat *authorstat;
 	struct string_list *items;
 	char *tmp;
-	struct tm *date;
+	struct tm date;
 	time_t t;
+	uintptr_t *counter;

 	info = cgit_parse_commit(commit);
 	tmp = xstrdup(info->author);
@ -185,13 +180,15 @@ static void add_commit(struct string_list *authors, struct commit *commit,
 	authorstat = author->util;
 	items = &authorstat->list;
 	t = info->committer_date;
-	date = gmtime(&t);
-	period->trunc(date);
-	tmp = xstrdup(period->pretty(date));
+	gmtime_r(&t, &date);
+	period->trunc(&date);
+	tmp = xstrdup(period->pretty(&date));
 	item = string_list_insert(items, tmp);
-	if (item->util)
+	counter = (uintptr_t *)&item->util;
+	if (*counter)
 		free(tmp);
-	item->util++;
+	(*counter)++;
+
 	authorstat->total++;
 	cgit_free_commitinfo(info);
 }
@ -218,15 +215,15 @@ static struct string_list collect_stats(const struct cgit_period *period)
 	int argc = 3;
 	time_t now;
 	long i;
-	struct tm *tm;
+	struct tm tm;
 	char tmp[11];

 	time(&now);
-	tm = gmtime(&now);
-	period->trunc(tm);
+	gmtime_r(&now, &tm);
+	period->trunc(&tm);
 	for (i = 1; i < period->count; i++)
-		period->dec(tm);
-	strftime(tmp, sizeof(tmp), "%Y-%m-%d", tm);
+		period->dec(&tm);
+	strftime(tmp, sizeof(tmp), "%Y-%m-%d", &tm);
 	argv[2] = xstrdup(fmt("--since=%s", tmp));
 	if (ctx.qry.path) {
 		argv[3] = "--";
@ -244,8 +241,7 @@ static struct string_list collect_stats(const struct cgit_period *period)
 	memset(&authors, 0, sizeof(authors));
 	while ((commit = get_revision(&rev)) != NULL) {
 		add_commit(&authors, commit, period);
-		free_commit_buffer(commit);
-		free_commit_list(commit->parents);
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 	return authors;
@ -264,21 +260,21 @@ static void print_combined_authorrow(struct string_list *authors, int from,
 	struct string_list_item *date;
 	time_t now;
 	long i, j, total, subtotal;
-	struct tm *tm;
+	struct tm tm;
 	char *tmp;

 	time(&now);
-	tm = gmtime(&now);
-	period->trunc(tm);
+	gmtime_r(&now, &tm);
+	period->trunc(&tm);
 	for (i = 1; i < period->count; i++)
-		period->dec(tm);
+		period->dec(&tm);

 	total = 0;
 	htmlf("<tr><td class='%s'>%s</td>", leftclass,
 		fmt(name, to - from + 1));
 	for (j = 0; j < period->count; j++) {
-		tmp = period->pretty(tm);
-		period->inc(tm);
+		tmp = period->pretty(&tm);
+		period->inc(&tm);
 		subtotal = 0;
 		for (i = from; i <= to; i++) {
 			author = &authors->items[i];
@ -286,7 +282,7 @@ static void print_combined_authorrow(struct string_list *authors, int from,
 			items = &authorstat->list;
 			date = string_list_lookup(items, tmp);
 			if (date)
-				subtotal += (size_t)date->util;
+				subtotal += (uintptr_t)date->util;
 		}
 		htmlf("<td class='%s'>%ld</td>", centerclass, subtotal);
 		total += subtotal;
@ -303,20 +299,20 @@ static void print_authors(struct string_list *authors, int top,
 	struct string_list_item *date;
 	time_t now;
 	long i, j, total;
-	struct tm *tm;
+	struct tm tm;
 	char *tmp;

 	time(&now);
-	tm = gmtime(&now);
-	period->trunc(tm);
+	gmtime_r(&now, &tm);
+	period->trunc(&tm);
 	for (i = 1; i < period->count; i++)
-		period->dec(tm);
+		period->dec(&tm);

 	html("<table class='stats'><tr><th>Author</th>");
 	for (j = 0; j < period->count; j++) {
-		tmp = period->pretty(tm);
+		tmp = period->pretty(&tm);
 		htmlf("<th>%s</th>", tmp);
-		period->inc(tm);
+		period->inc(&tm);
 	}
 	html("<th>Total</th></tr>\n");

@ -332,16 +328,16 @@ static void print_authors(struct string_list *authors, int top,
 		items = &authorstat->list;
 		total = 0;
 		for (j = 0; j < period->count; j++)
-			period->dec(tm);
+			period->dec(&tm);
 		for (j = 0; j < period->count; j++) {
-			tmp = period->pretty(tm);
-			period->inc(tm);
+			tmp = period->pretty(&tm);
+			period->inc(&tm);
 			date = string_list_lookup(items, tmp);
 			if (!date)
 				html("<td>0</td>");
 			else {
-				htmlf("<td>"SZ_FMT"</td>", (size_t)date->util);
-				total += (size_t)date->util;
+				htmlf("<td>%lu</td>", (uintptr_t)date->util);
+				total += (uintptr_t)date->util;
 			}
 		}
 		htmlf("<td class='sum'>%ld</td></tr>", total);
@ -372,11 +368,13 @@ void cgit_show_stats(void)

 	i = cgit_find_stats_period(code, &period);
 	if (!i) {
-		cgit_print_error("Unknown statistics type: %c", code[0]);
+		cgit_print_error_page(404, "Not found",
+			"Unknown statistics type: %c", code[0]);
 		return;
 	}
 	if (i > ctx.repo->max_stats) {
-		cgit_print_error("Statistics type disabled: %s", period->name);
+		cgit_print_error_page(400, "Bad request",
+			"Statistics type disabled: %s", period->name);
 		return;
 	}
 	authors = collect_stats(period);
@ -387,9 +385,10 @@ void cgit_show_stats(void)
 	if (!top)
 		top = 10;

+	cgit_print_layout_start();
 	html("<div class='cgit-panel'>");
 	html("<b>stat options</b>");
-	html("<form method='get' action=''>");
+	html("<form method='get'>");
 	cgit_add_hidden_formfields(1, 0, "stats");
 	html("<table><tr><td colspan='2'/></tr>");
 	if (ctx.repo->max_stats > 1) {
@ -421,5 +420,6 @@ void cgit_show_stats(void)
 	}
 	html("</h2>");
 	print_authors(&authors, top, period);
+	cgit_print_layout_end();
 }

--- a/ui-summary.c
+++ b/ui-summary.c
@ -9,11 +9,11 @@
 #include "cgit.h"
 #include "ui-summary.h"
 #include "html.h"
+#include "ui-blob.h"
 #include "ui-log.h"
+#include "ui-plain.h"
 #include "ui-refs.h"
-#include "ui-blob.h"
 #include "ui-shared.h"
-#include <libgen.h>

 static int urls;

@ -49,6 +49,7 @@ void cgit_print_summary(void)
 	if (ctx.repo->enable_log_linecount)
 		columns++;

+	cgit_print_layout_start();
 	html("<table summary='repository info' class='list nowrap'>");
 	cgit_print_branches(ctx.cfg.summary_branches);
 	htmlf("<tr class='nohover'><td colspan='%d'>&nbsp;</td></tr>", columns);
@ -61,6 +62,7 @@ void cgit_print_summary(void)
 	urls = 0;
 	cgit_add_clone_urls(print_url);
 	html("</table>");
+	cgit_print_layout_end();
 }

 /* The caller must free the return value. */
@ -97,13 +99,24 @@ static char* append_readme_path(const char *filename, const char *ref, const cha
 	return full_path;
 }

-void cgit_print_repo_readme(char *path)
+void cgit_print_repo_readme(const char *path)
 {
-	char *filename, *ref;
+	char *filename, *ref, *mimetype;
 	int free_filename = 0;

-	if (ctx.repo->readme.nr == 0)
+	mimetype = get_mimetype_for_filename(path);
+	if (mimetype && (!strncmp(mimetype, "image/", 6) || !strncmp(mimetype, "video/", 6))) {
+		ctx.page.mimetype = mimetype;
+		ctx.page.charset = NULL;
+		cgit_print_plain();
+		free(mimetype);
 		return;
+	}
+	free(mimetype);
+
+	cgit_print_layout_start();
+	if (ctx.repo->readme.nr == 0)
+		goto done;

 	filename = ctx.repo->readme.items[0].string;
 	ref = ctx.repo->readme.items[0].util;
@ -112,7 +125,7 @@ void cgit_print_repo_readme(char *path)
 		free_filename = 1;
 		filename = append_readme_path(filename, ref, path);
 		if (!filename)
-			return;
+			goto done;
 	}

 	/* Print the calculated readme, either from the git repo or from the
@ -129,4 +142,7 @@ void cgit_print_repo_readme(char *path)
 	html("</div>");
 	if (free_filename)
 		free(filename);
+
+done:
+	cgit_print_layout_end();
 }
--- a/ui-summary.h
+++ b/ui-summary.h
@ -1,7 +1,7 @@
 #ifndef UI_SUMMARY_H
 #define UI_SUMMARY_H

-extern void cgit_print_summary();
-extern void cgit_print_repo_readme(char *path);
+extern void cgit_print_summary(void);
+extern void cgit_print_repo_readme(const char *path);

 #endif /* UI_SUMMARY_H */
--- a/ui-tag.c
+++ b/ui-tag.c
@ -33,46 +33,51 @@ static void print_tag_content(char *buf)

 static void print_download_links(char *revname)
 {
-	html("<tr><th>download</th><td class='sha1'>");
-	cgit_print_snapshot_links(ctx.qry.repo, ctx.qry.head,
-				  revname, ctx.repo->snapshots);
+	html("<tr><th>download</th><td class='oid'>");
+	cgit_print_snapshot_links(ctx.repo, revname, "<br/>");
 	html("</td></tr>");
 }

 void cgit_print_tag(char *revname)
 {
 	struct strbuf fullref = STRBUF_INIT;
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct object *obj;
-	struct tag *tag;
-	struct taginfo *info;

 	if (!revname)
 		revname = ctx.qry.head;

 	strbuf_addf(&fullref, "refs/tags/%s", revname);
-	if (get_sha1(fullref.buf, sha1)) {
-		cgit_print_error("Bad tag reference: %s", revname);
+	if (get_oid(fullref.buf, &oid)) {
+		cgit_print_error_page(404, "Not found",
+			"Bad tag reference: %s", revname);
 		goto cleanup;
 	}
-	obj = parse_object(sha1);
+	obj = parse_object(the_repository, &oid);
 	if (!obj) {
-		cgit_print_error("Bad object id: %s", sha1_to_hex(sha1));
+		cgit_print_error_page(500, "Internal server error",
+			"Bad object id: %s", oid_to_hex(&oid));
 		goto cleanup;
 	}
 	if (obj->type == OBJ_TAG) {
-		tag = lookup_tag(sha1);
+		struct tag *tag;
+		struct taginfo *info;
+
+		tag = lookup_tag(the_repository, &oid);
 		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag))) {
-			cgit_print_error("Bad tag object: %s", revname);
+			cgit_print_error_page(500, "Internal server error",
+				"Bad tag object: %s", revname);
 			goto cleanup;
 		}
+		cgit_print_layout_start();
 		html("<table class='commit-info'>\n");
-		htmlf("<tr><td>tag name</td><td>");
+		html("<tr><td>tag name</td><td>");
 		html_txt(revname);
-		htmlf(" (%s)</td></tr>\n", sha1_to_hex(sha1));
+		htmlf(" (%s)</td></tr>\n", oid_to_hex(&oid));
 		if (info->tagger_date > 0) {
 			html("<tr><td>tag date</td><td>");
-			cgit_print_date(info->tagger_date, FMT_LONGDATE, ctx.cfg.local_time);
+			html_txt(show_date(info->tagger_date, info->tagger_tz,
+						cgit_date_mode(DATE_ISO8601)));
 			html("</td></tr>\n");
 		}
 		if (info->tagger) {
@ -86,24 +91,28 @@ void cgit_print_tag(char *revname)
 			cgit_close_filter(ctx.repo->email_filter);
 			html("</td></tr>\n");
 		}
-		html("<tr><td>tagged object</td><td class='sha1'>");
+		html("<tr><td>tagged object</td><td class='oid'>");
 		cgit_object_link(tag->tagged);
 		html("</td></tr>\n");
 		if (ctx.repo->snapshots)
 			print_download_links(revname);
 		html("</table>\n");
 		print_tag_content(info->msg);
+		cgit_print_layout_end();
+		cgit_free_taginfo(info);
 	} else {
+		cgit_print_layout_start();
 		html("<table class='commit-info'>\n");
-		htmlf("<tr><td>tag name</td><td>");
+		html("<tr><td>tag name</td><td>");
 		html_txt(revname);
 		html("</td></tr>\n");
-		html("<tr><td>Tagged object</td><td class='sha1'>");
+		html("<tr><td>tagged object</td><td class='oid'>");
 		cgit_object_link(obj);
 		html("</td></tr>\n");
 		if (ctx.repo->snapshots)
 			print_download_links(revname);
 		html("</table>\n");
+		cgit_print_layout_end();
 	}

 cleanup:
--- a/ui-tree.c
+++ b/ui-tree.c
@ -1,12 +1,11 @@
 /* ui-tree.c: functions for tree output
 *
- * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
+ * Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

-#include <ctype.h>
 #include "cgit.h"
 #include "ui-tree.h"
 #include "html.h"
@ -85,27 +84,39 @@ static void print_binary_buffer(char *buf, unsigned long size)
 	html("</table>\n");
 }

-static void print_object(const unsigned char *sha1, char *path, const char *basename, const char *rev)
+static void print_object(const struct object_id *oid, const char *path, const char *basename, const char *rev)
 {
 	enum object_type type;
 	char *buf;
 	unsigned long size;
+	bool is_binary;

-	type = sha1_object_info(sha1, &size);
+	type = oid_object_info(the_repository, oid, &size);
 	if (type == OBJ_BAD) {
-		cgit_print_error("Bad object name: %s", sha1_to_hex(sha1));
+		cgit_print_error_page(404, "Not found",
+			"Bad object name: %s", oid_to_hex(oid));
 		return;
 	}

-	buf = read_sha1_file(sha1, &type, &size);
+	buf = read_object_file(oid, &type, &size);
 	if (!buf) {
-		cgit_print_error("Error reading object %s", sha1_to_hex(sha1));
+		cgit_print_error_page(500, "Internal server error",
+			"Error reading object %s", oid_to_hex(oid));
 		return;
 	}
+	is_binary = buffer_is_binary(buf, size);

-	htmlf("blob: %s (", sha1_to_hex(sha1));
+	cgit_set_title_from_path(path);
+
+	cgit_print_layout_start();
+	htmlf("blob: %s (", oid_to_hex(oid));
 	cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 		        rev, path);
+	if (ctx.repo->enable_blame && !is_binary) {
+		html(") (");
+		cgit_blame_link("blame", NULL, NULL, ctx.qry.head,
+			        rev, path);
+	}
 	html(")\n");

 	if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
@ -114,34 +125,102 @@ static void print_object(const unsigned char *sha1, char *path, const char *base
 		return;
 	}

-	if (buffer_is_binary(buf, size))
+	if (is_binary)
 		print_binary_buffer(buf, size);
 	else
 		print_text_buffer(basename, buf, size);
+
+	free(buf);
+}
+
+struct single_tree_ctx {
+	struct strbuf *path;
+	struct object_id oid;
+	char *name;
+	size_t count;
+};
+
+static int single_tree_cb(const struct object_id *oid, struct strbuf *base,
+			  const char *pathname, unsigned mode, void *cbdata)
+{
+	struct single_tree_ctx *ctx = cbdata;
+
+	if (++ctx->count > 1)
+		return -1;
+
+	if (!S_ISDIR(mode)) {
+		ctx->count = 2;
+		return -1;
+	}
+
+	ctx->name = xstrdup(pathname);
+	oidcpy(&ctx->oid, oid);
+	strbuf_addf(ctx->path, "/%s", pathname);
+	return 0;
 }

+static void write_tree_link(const struct object_id *oid, char *name,
+			    char *rev, struct strbuf *fullpath)
+{
+	size_t initial_length = fullpath->len;
+	struct tree *tree;
+	struct single_tree_ctx tree_ctx = {
+		.path = fullpath,
+		.count = 1,
+	};
+	struct pathspec paths = {
+		.nr = 0
+	};
+
+	oidcpy(&tree_ctx.oid, oid);
+
+	while (tree_ctx.count == 1) {
+		cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head, rev,
+			       fullpath->buf);
+
+		tree = lookup_tree(the_repository, &tree_ctx.oid);
+		if (!tree)
+			return;
+
+		free(tree_ctx.name);
+		tree_ctx.name = NULL;
+		tree_ctx.count = 0;
+
+		read_tree(the_repository, tree, &paths, single_tree_cb, &tree_ctx);
+
+		if (tree_ctx.count != 1)
+			break;
+
+		html(" / ");
+		name = tree_ctx.name;
+	}
+
+	strbuf_setlen(fullpath, initial_length);
+}

-static int ls_item(const unsigned char *sha1, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+static int ls_item(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
 	char *name;
 	struct strbuf fullpath = STRBUF_INIT;
+	struct strbuf linkpath = STRBUF_INIT;
 	struct strbuf class = STRBUF_INIT;
 	enum object_type type;
 	unsigned long size = 0;
+	char *buf;

 	name = xstrdup(pathname);
 	strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 		    ctx.qry.path ? "/" : "", name);

 	if (!S_ISGITLINK(mode)) {
-		type = sha1_object_info(sha1, &size);
+		type = oid_object_info(the_repository, oid, &size);
 		if (type == OBJ_BAD) {
 			htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 			      name,
-			      sha1_to_hex(sha1));
-			return 0;
+			      oid_to_hex(oid));
+			goto cleanup;
 		}
 	}

@ -149,10 +228,10 @@ static int ls_item(const unsigned char *sha1, struct strbuf *base,
 	cgit_print_filemode(mode);
 	html("</td><td>");
 	if (S_ISGITLINK(mode)) {
-		cgit_submodule_link("ls-mod", fullpath.buf, sha1_to_hex(sha1));
+		cgit_submodule_link("ls-mod", fullpath.buf, oid_to_hex(oid));
 	} else if (S_ISDIR(mode)) {
-		cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
-			       walk_tree_ctx->curr_rev, fullpath.buf);
+		write_tree_link(oid, name, walk_tree_ctx->curr_rev,
+				&fullpath);
 	} else {
 		char *ext = strrchr(name, '.');
 		strbuf_addstr(&class, "ls-blob");
@ -161,19 +240,39 @@ static int ls_item(const unsigned char *sha1, struct strbuf *base,
 		cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
 			       walk_tree_ctx->curr_rev, fullpath.buf);
 	}
+	if (S_ISLNK(mode)) {
+		html(" -> ");
+		buf = read_object_file(oid, &type, &size);
+		if (!buf) {
+			htmlf("Error reading object: %s", oid_to_hex(oid));
+			goto cleanup;
+		}
+		strbuf_addbuf(&linkpath, &fullpath);
+		strbuf_addf(&linkpath, "/../%s", buf);
+		strbuf_normalize_path(&linkpath);
+		cgit_tree_link(buf, NULL, class.buf, ctx.qry.head,
+			walk_tree_ctx->curr_rev, linkpath.buf);
+		free(buf);
+		strbuf_release(&linkpath);
+	}
 	htmlf("</td><td class='ls-size'>%li</td>", size);

 	html("<td>");
 	cgit_log_link("log", NULL, "button", ctx.qry.head,
 		      walk_tree_ctx->curr_rev, fullpath.buf, 0, NULL, NULL,
-		      ctx.qry.showmsg);
+		      ctx.qry.showmsg, 0);
 	if (ctx.repo->max_stats)
 		cgit_stats_link("stats", NULL, "button", ctx.qry.head,
 				fullpath.buf);
 	if (!S_ISGITLINK(mode))
 		cgit_plain_link("plain", NULL, "button", ctx.qry.head,
 				walk_tree_ctx->curr_rev, fullpath.buf);
+	if (!S_ISDIR(mode) && ctx.repo->enable_blame)
+		cgit_blame_link("blame", NULL, "button", ctx.qry.head,
+				walk_tree_ctx->curr_rev, fullpath.buf);
 	html("</td></tr>\n");
+
+cleanup:
 	free(name);
 	strbuf_release(&fullpath);
 	strbuf_release(&class);
@ -182,6 +281,7 @@ static int ls_item(const unsigned char *sha1, struct strbuf *base,

 static void ls_head(void)
 {
+	cgit_print_layout_start();
 	html("<table summary='tree listing' class='list'>\n");
 	html("<tr class='nohover'>");
 	html("<th class='left'>Mode</th>");
@ -194,49 +294,56 @@ static void ls_head(void)
 static void ls_tail(void)
 {
 	html("</table>\n");
+	cgit_print_layout_end();
 }

-static void ls_tree(const unsigned char *sha1, char *path, struct walk_tree_context *walk_tree_ctx)
+static void ls_tree(const struct object_id *oid, const char *path, struct walk_tree_context *walk_tree_ctx)
 {
 	struct tree *tree;
 	struct pathspec paths = {
 		.nr = 0
 	};

-	tree = parse_tree_indirect(sha1);
+	tree = parse_tree_indirect(oid);
 	if (!tree) {
-		cgit_print_error("Not a tree object: %s", sha1_to_hex(sha1));
+		cgit_print_error_page(404, "Not found",
+			"Not a tree object: %s", oid_to_hex(oid));
 		return;
 	}

 	ls_head();
-	read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
+	read_tree(the_repository, tree, &paths, ls_item, walk_tree_ctx);
 	ls_tail();
 }


-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
-	static char buffer[PATH_MAX];

 	if (walk_tree_ctx->state == 0) {
-		memcpy(buffer, base->buf, base->len);
-		strcpy(buffer + base->len, pathname);
-		if (strcmp(walk_tree_ctx->match_path, buffer))
+		struct strbuf buffer = STRBUF_INIT;
+
+		strbuf_addbuf(&buffer, base);
+		strbuf_addstr(&buffer, pathname);
+		if (strcmp(walk_tree_ctx->match_path, buffer.buf))
 			return READ_TREE_RECURSIVE;

 		if (S_ISDIR(mode)) {
 			walk_tree_ctx->state = 1;
+			cgit_set_title_from_path(buffer.buf);
+			strbuf_release(&buffer);
 			ls_head();
 			return READ_TREE_RECURSIVE;
 		} else {
-			print_object(sha1, buffer, pathname, walk_tree_ctx->curr_rev);
+			walk_tree_ctx->state = 2;
+			print_object(oid, buffer.buf, pathname, walk_tree_ctx->curr_rev);
+			strbuf_release(&buffer);
 			return 0;
 		}
 	}
-	ls_item(sha1, base, pathname, mode, stage, walk_tree_ctx);
+	ls_item(oid, base, pathname, mode, walk_tree_ctx);
 	return 0;
 }

@ -247,7 +354,7 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
 */
 void cgit_print_tree(const char *rev, char *path)
 {
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct commit *commit;
 	struct pathspec_item path_items = {
 		.match = path,
@ -265,26 +372,33 @@ void cgit_print_tree(const char *rev, char *path)
 	if (!rev)
 		rev = ctx.qry.head;

-	if (get_sha1(rev, sha1)) {
-		cgit_print_error("Invalid revision name: %s", rev);
+	if (get_oid(rev, &oid)) {
+		cgit_print_error_page(404, "Not found",
+			"Invalid revision name: %s", rev);
 		return;
 	}
-	commit = lookup_commit_reference(sha1);
+	commit = lookup_commit_reference(the_repository, &oid);
 	if (!commit || parse_commit(commit)) {
-		cgit_print_error("Invalid commit reference: %s", rev);
+		cgit_print_error_page(404, "Not found",
+			"Invalid commit reference: %s", rev);
 		return;
 	}

 	walk_tree_ctx.curr_rev = xstrdup(rev);

 	if (path == NULL) {
-		ls_tree(commit->tree->object.sha1, NULL, &walk_tree_ctx);
+		ls_tree(get_commit_tree_oid(commit), NULL, &walk_tree_ctx);
 		goto cleanup;
 	}

-	read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+		  &paths, walk_tree, &walk_tree_ctx);
 	if (walk_tree_ctx.state == 1)
 		ls_tail();
+	else if (walk_tree_ctx.state == 2)
+		cgit_print_layout_end();
+	else
+		cgit_print_error_page(404, "Not found", "Path not found");

 cleanup:
 	free(walk_tree_ctx.curr_rev);