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quietness and verbosity

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updater
devrandom 13 years ago
parent 9c29c2aad9
commit d1fa0a122f
2 changed files with 75 additions and 16 deletions
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41
doc/DOWNLOADER.md
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@ -0,0 +1,41 @@
# Gitian Downloader
## Download config
Construct a download config:
---
signers:
989F6B3048A116B5:
weight: 20
name: Devrandom
key: |-
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.10 (GNU/Linux)
mQINBE2OgyMBEAC/ZNlctrNpVk1CUYbIflQtNqybqGPFzxp2F+EYdMfEXvR9e7bP
...
minimum_weight: 30
the keys can be extracted with:
gpg --export-options export-minimal --export -a KEYID
the long key id can be obtained with:
gpg -kv --keyid-format long KEYID
## ZIP file
The zip file should have the payload produced in build/out by gbuild, plus a gitian directory. The gitian directory should contain files of the form:
devrandom-build.assert
devrandom-build.assert.pgp
where the FILE.assert file is the PACKAGE-res.yml build report and the .pgp file is signature.pgp generated by gsign.
## Running the downloader
gitian-updater --url file:///tmp/PACKAGE.zip --config PACKAGE-download-config --dest DEST
Of course, the URL can be external rather than on the file system.

50
share/gitian-updater
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@ -11,6 +11,8 @@ import argparse
import yaml
from zipfile import ZipFile
quiet = 0
def sanitize_path(dir_name, name, where):
if re.search(r'[^/\w.-]', name):
raise ValueError, "unsanitary path in %s"%(where)
@ -27,7 +29,8 @@ def download(url, dest):
f = open(dest, 'w')
meta = u.info()
file_size = int(meta.getheaders("Content-Length")[0])
print "Downloading: %s Bytes: %s" % (file_name, file_size)
if quiet == 0:
print "Downloading: %s Bytes: %s" % (file_name, file_size)
file_size_dl = 0
block_sz = 65536
@ -40,9 +43,11 @@ def download(url, dest):
f.write(buffer)
status = r"%10d [%3.2f%%]" % (file_size_dl, file_size_dl * 100. / file_size)
status = status + chr(8)*(len(status)+1)
print status,
if quiet == 0:
print status,
print
if quiet == 0:
print
f.close()
def extract(dir_name, zip_path):
@ -78,7 +83,8 @@ def get_assertions(temp_dir, unpack_dir, file_names):
gpgout = popen.communicate()[1]
retcode = popen.wait()
if retcode != 0:
print>>sys.stderr, 'PGP verify failed for %s' %(file_name)
if quiet <= 1:
print>>sys.stderr, 'PGP verify failed for %s' %(file_name)
error = True
continue
match = re.search(r'key ([A-F0-9]+)$', gpgout, re.M)
@ -104,7 +110,7 @@ def get_assertions(temp_dir, unpack_dir, file_names):
print>>sys.stderr, "sha256sum mismatch on %s" %(summed_file)
error = True
del to_check[summed_file]
if len(to_check) > 0:
if len(to_check) > 0 and quiet == 0:
print>>sys.stderr, "Some of the files were not checksummed:"
for key in to_check:
print>>sys.stderr, " ", key
@ -125,14 +131,21 @@ def import_keys(temp_dir, config):
def check_assertions(config, assertions):
total_weight = 0
signers = config['signers']
if quiet == 0:
print 'Signatures from:'
for key in assertions['build']:
if not config['signers'].has_key(key):
print>>sys.stderr, 'key %s is not in config, skipping'%(key)
total_weight += config['signers'][key]['weight']
if not signers.has_key(key):
if quiet <= 1:
print>>sys.stderr, 'key %s is not in config, skipping'%(key)
continue
if quiet == 0:
print ' %s : weight %d'%(signers[key]['name'], signers[key]['weight'])
total_weight += signers[key]['weight']
if total_weight < config['minimum_weight']:
print>>sys.stderr, "The total weight of signatures is %d, which is less than the minimum required %d"%(total_weight, config['minimum_weight'])
return False
return True
return total_weight
class OrderedDictYAMLLoader(yaml.Loader):
@ -159,17 +172,19 @@ full_prog = sys.argv[0]
prog = os.path.basename(full_prog)
parser = argparse.ArgumentParser(description='Download a verify a gitian package')
parser.add_argument('--url', metavar='URL', type=str, nargs='+', required=True,
parser.add_argument('-u', '--url', metavar='URL', type=str, nargs='+', required=True,
help='one or more URLs where the package can be found')
parser.add_argument('--config', metavar='CONF', type=str, required=True,
parser.add_argument('-c', '--config', metavar='CONF', type=str, required=True,
help='a configuration file')
parser.add_argument('--dest', metavar='DEST', type=str, required=True,
parser.add_argument('-d', '--dest', metavar='DEST', type=str, required=True,
help='the destination directory for unpacking')
parser.add_argument('-q', '--quiet', action='append_const', const=1, default=[], help='be quiet')
args = parser.parse_args()
url = args.url[0]
config_file = args.config
quiet = len(args.quiet)
f = file(config_file, 'r')
config = yaml.safe_load(f)
@ -191,14 +206,17 @@ download(url, package_file)
unpack_dir = path.join(temp_dir, 'unpack')
files = extract(unpack_dir, package_file)
(success, assertions, out_manifest) = get_assertions(temp_dir, unpack_dir, files)
if not success:
print>>sys.stderr, "There were errors getting assertions, aborting"
exit(1)
if not success and quiet <= 1:
print>>sys.stderr, "There were errors getting assertions"
if not check_assertions(config, assertions):
total_weight = check_assertions(config, assertions)
if not total_weight:
print>>sys.stderr, "There were errors checking assertions, build is untrusted, aborting"
exit(1)
if quiet == 0:
print>>sys.stderr, "Successful with signature weight %d"%(total_weight)
shutil.copytree(unpack_dir, args.dest)
f = file(path.join(args.dest, '.manifest'), 'w')
yaml.dump(out_manifest, f)

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