#!/usr/bin/env python # -*- coding: utf-8 -*- # This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web) # Copyright (C) 2012-2019 cervinko, idalin, SiphonSquirrel, ouzklcn, akushsky, # OzzieIsaacs, bodybybuddha, jkrehm, matthazinski, janeczku # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # 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, see . import db import ub from flask import current_app as app from tempfile import gettempdir import sys import io import os import re import unicodedata import worker import time from flask import send_from_directory, make_response, redirect, abort from flask_babel import gettext as _ from flask_login import current_user from babel.dates import format_datetime from datetime import datetime import shutil import requests try: import gdriveutils as gd except ImportError: pass import web import random import subprocess try: import unidecode use_unidecode = True except ImportError: use_unidecode = False try: from PIL import Image use_PIL = True except ImportError: use_PIL = False # Global variables # updater_thread = None global_WorkerThread = worker.WorkerThread() global_WorkerThread.start() def update_download(book_id, user_id): check = ub.session.query(ub.Downloads).filter(ub.Downloads.user_id == user_id).filter(ub.Downloads.book_id == book_id).first() if not check: new_download = ub.Downloads(user_id=user_id, book_id=book_id) ub.session.add(new_download) ub.session.commit() # Convert existing book entry to new format def convert_book_format(book_id, calibrepath, old_book_format, new_book_format, user_id, kindle_mail=None): book = db.session.query(db.Books).filter(db.Books.id == book_id).first() data = db.session.query(db.Data).filter(db.Data.book == book.id).filter(db.Data.format == old_book_format).first() if not data: error_message = _(u"%(format)s format not found for book id: %(book)d", format=old_book_format, book=book_id) app.logger.error("convert_book_format: " + error_message) return error_message if ub.config.config_use_google_drive: df = gd.getFileFromEbooksFolder(book.path, data.name + "." + old_book_format.lower()) if df: datafile = os.path.join(calibrepath, book.path, data.name + u"." + old_book_format.lower()) if not os.path.exists(os.path.join(calibrepath, book.path)): os.makedirs(os.path.join(calibrepath, book.path)) df.GetContentFile(datafile) else: error_message = _(u"%(format)s not found on Google Drive: %(fn)s", format=old_book_format, fn=data.name + "." + old_book_format.lower()) return error_message file_path = os.path.join(calibrepath, book.path, data.name) if os.path.exists(file_path + "." + old_book_format.lower()): # read settings and append converter task to queue if kindle_mail: settings = ub.get_mail_settings() settings['subject'] = _('Send to Kindle') # pretranslate Subject for e-mail settings['body'] = _(u'This e-mail has been sent via Calibre-Web.') # text = _(u"%(format)s: %(book)s", format=new_book_format, book=book.title) else: settings = dict() text = (u"%s -> %s: %s" % (old_book_format, new_book_format, book.title)) settings['old_book_format'] = old_book_format settings['new_book_format'] = new_book_format global_WorkerThread.add_convert(file_path, book.id, user_id, text, settings, kindle_mail) return None else: error_message = _(u"%(format)s not found: %(fn)s", format=old_book_format, fn=data.name + "." + old_book_format.lower()) return error_message def send_test_mail(kindle_mail, user_name): global_WorkerThread.add_email(_(u'Calibre-Web test e-mail'),None, None, ub.get_mail_settings(), kindle_mail, user_name, _(u"Test e-mail"), _(u'This e-mail has been sent via Calibre-Web.')) return # Send registration email or password reset email, depending on parameter resend (False means welcome email) def send_registration_mail(e_mail, user_name, default_password, resend=False): text = "Hello %s!\r\n" % user_name if not resend: text += "Your new account at Calibre-Web has been created. Thanks for joining us!\r\n" text += "Please log in to your account using the following informations:\r\n" text += "User name: %s\n" % user_name text += "Password: %s\r\n" % default_password text += "Don't forget to change your password after first login.\r\n" text += "Sincerely\r\n\r\n" text += "Your Calibre-Web team" global_WorkerThread.add_email(_(u'Get Started with Calibre-Web'),None, None, ub.get_mail_settings(), e_mail, user_name, _(u"Registration e-mail for user: %(name)s", name=user_name), text) return def check_send_to_kindle(entry): """ returns all available book formats for sending to Kindle """ if len(entry.data): bookformats=list() if ub.config.config_ebookconverter == 0: # no converter - only for mobi and pdf formats for ele in iter(entry.data): if 'MOBI' in ele.format: bookformats.append({'format':'Mobi','convert':0,'text':_('Send %(format)s to Kindle',format='Mobi')}) if 'PDF' in ele.format: bookformats.append({'format':'Pdf','convert':0,'text':_('Send %(format)s to Kindle',format='Pdf')}) if 'AZW' in ele.format: bookformats.append({'format':'Azw','convert':0,'text':_('Send %(format)s to Kindle',format='Azw')}) if 'AZW3' in ele.format: bookformats.append({'format':'Azw3','convert':0,'text':_('Send %(format)s to Kindle',format='Azw3')}) else: formats = list() for ele in iter(entry.data): formats.append(ele.format) if 'MOBI' in formats: bookformats.append({'format': 'Mobi','convert':0,'text':_('Send %(format)s to Kindle',format='Mobi')}) if 'AZW' in formats: bookformats.append({'format': 'Azw','convert':0,'text':_('Send %(format)s to Kindle',format='Azw')}) if 'AZW3' in formats: bookformats.append({'format': 'Azw3','convert':0,'text':_('Send %(format)s to Kindle',format='Azw3')}) if 'PDF' in formats: bookformats.append({'format': 'Pdf','convert':0,'text':_('Send %(format)s to Kindle',format='Pdf')}) if ub.config.config_ebookconverter >= 1: if 'EPUB' in formats and not 'MOBI' in formats: bookformats.append({'format': 'Mobi','convert':1, 'text':_('Convert %(orig)s to %(format)s and send to Kindle',orig='Epub',format='Mobi')}) if ub.config.config_ebookconverter == 2: if 'EPUB' in formats and not 'AZW3' in formats: bookformats.append({'format': 'Azw3','convert':1, 'text':_('Convert %(orig)s to %(format)s and send to Kindle',orig='Epub',format='Azw3')}) return bookformats else: app.logger.error(u'Cannot find book entry %d', entry.id) return None # Check if a reader is existing for any of the book formats, if not, return empty list, otherwise return # list with supported formats def check_read_formats(entry): EXTENSIONS_READER = {'TXT', 'PDF', 'EPUB', 'ZIP', 'CBZ', 'TAR', 'CBT', 'RAR', 'CBR'} bookformats = list() if len(entry.data): for ele in iter(entry.data): if ele.format in EXTENSIONS_READER: bookformats.append(ele.format.lower()) return bookformats # Files are processed in the following order/priority: # 1: If Mobi file is existing, it's directly send to kindle email, # 2: If Epub file is existing, it's converted and send to kindle email, # 3: If Pdf file is existing, it's directly send to kindle email def send_mail(book_id, book_format, convert, kindle_mail, calibrepath, user_id): """Send email with attachments""" book = db.session.query(db.Books).filter(db.Books.id == book_id).first() if convert: # returns None if success, otherwise errormessage return convert_book_format(book_id, calibrepath, u'epub', book_format.lower(), user_id, kindle_mail) else: for entry in iter(book.data): if entry.format.upper() == book_format.upper(): result = entry.name + '.' + book_format.lower() global_WorkerThread.add_email(_(u"Send to Kindle"), book.path, result, ub.get_mail_settings(), kindle_mail, user_id, _(u"E-mail: %(book)s", book=book.title), _(u'This e-mail has been sent via Calibre-Web.')) return return _(u"The requested file could not be read. Maybe wrong permissions?") def get_valid_filename(value, replace_whitespace=True): """ Returns the given string converted to a string that can be used for a clean filename. Limits num characters to 128 max. """ if value[-1:] == u'.': value = value[:-1]+u'_' value = value.replace("/", "_").replace(":", "_").strip('\0') if use_unidecode: value = (unidecode.unidecode(value)).strip() else: value = value.replace(u'§', u'SS') value = value.replace(u'ß', u'ss') value = unicodedata.normalize('NFKD', value) re_slugify = re.compile('[\W\s-]', re.UNICODE) if isinstance(value, str): # Python3 str, Python2 unicode value = re_slugify.sub('', value).strip() else: value = unicode(re_slugify.sub('', value).strip()) if replace_whitespace: # *+:\"/<>? are replaced by _ value = re.sub(r'[\*\+:\\\"/<>\?]+', u'_', value, flags=re.U) # pipe has to be replaced with comma value = re.sub(r'[\|]+', u',', value, flags=re.U) value = value[:128] if not value: raise ValueError("Filename cannot be empty") if sys.version_info.major == 3: return value else: return value.decode('utf-8') def get_sorted_author(value): try: if ',' not in value: regexes = ["^(JR|SR)\.?$", "^I{1,3}\.?$", "^IV\.?$"] combined = "(" + ")|(".join(regexes) + ")" value = value.split(" ") if re.match(combined, value[-1].upper()): value2 = value[-2] + ", " + " ".join(value[:-2]) + " " + value[-1] elif len(value) == 1: value2 = value[0] else: value2 = value[-1] + ", " + " ".join(value[:-1]) else: value2 = value except Exception: web.app.logger.error("Sorting author " + str(value) + "failed") value2 = value return value2 # Deletes a book fro the local filestorage, returns True if deleting is successfull, otherwise false def delete_book_file(book, calibrepath, book_format=None): # check that path is 2 elements deep, check that target path has no subfolders if book.path.count('/') == 1: path = os.path.join(calibrepath, book.path) if book_format: for file in os.listdir(path): if file.upper().endswith("."+book_format): os.remove(os.path.join(path, file)) else: if os.path.isdir(path): if len(next(os.walk(path))[1]): web.app.logger.error( "Deleting book " + str(book.id) + " failed, path has subfolders: " + book.path) return False shutil.rmtree(path, ignore_errors=True) return True else: web.app.logger.error("Deleting book " + str(book.id) + " failed, book path not valid: " + book.path) return False def update_dir_structure_file(book_id, calibrepath, first_author): localbook = db.session.query(db.Books).filter(db.Books.id == book_id).first() path = os.path.join(calibrepath, localbook.path) authordir = localbook.path.split('/')[0] if first_author: new_authordir = get_valid_filename(first_author) else: new_authordir = get_valid_filename(localbook.authors[0].name) titledir = localbook.path.split('/')[1] new_titledir = get_valid_filename(localbook.title) + " (" + str(book_id) + ")" if titledir != new_titledir: try: new_title_path = os.path.join(os.path.dirname(path), new_titledir) if not os.path.exists(new_title_path): os.renames(path, new_title_path) else: web.app.logger.info("Copying title: " + path + " into existing: " + new_title_path) for dir_name, subdir_list, file_list in os.walk(path): for file in file_list: os.renames(os.path.join(dir_name, file), os.path.join(new_title_path + dir_name[len(path):], file)) path = new_title_path localbook.path = localbook.path.split('/')[0] + '/' + new_titledir except OSError as ex: web.app.logger.error("Rename title from: " + path + " to " + new_title_path + ": " + str(ex)) web.app.logger.debug(ex, exc_info=True) return _("Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s", src=path, dest=new_title_path, error=str(ex)) if authordir != new_authordir: try: new_author_path = os.path.join(calibrepath, new_authordir, os.path.basename(path)) os.renames(path, new_author_path) localbook.path = new_authordir + '/' + localbook.path.split('/')[1] except OSError as ex: web.app.logger.error("Rename author from: " + path + " to " + new_author_path + ": " + str(ex)) web.app.logger.debug(ex, exc_info=True) return _("Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s", src=path, dest=new_author_path, error=str(ex)) # Rename all files from old names to new names if authordir != new_authordir or titledir != new_titledir: try: new_name = get_valid_filename(localbook.title) + ' - ' + get_valid_filename(new_authordir) path_name = os.path.join(calibrepath, new_authordir, os.path.basename(path)) for file_format in localbook.data: os.renames(os.path.join(path_name, file_format.name + '.' + file_format.format.lower()), os.path.join(path_name, new_name + '.' + file_format.format.lower())) file_format.name = new_name except OSError as ex: web.app.logger.error("Rename file in path " + path + " to " + new_name + ": " + str(ex)) web.app.logger.debug(ex, exc_info=True) return _("Rename file in path '%(src)s' to '%(dest)s' failed with error: %(error)s", src=path, dest=new_name, error=str(ex)) return False def update_dir_structure_gdrive(book_id, first_author): error = False book = db.session.query(db.Books).filter(db.Books.id == book_id).first() path = book.path authordir = book.path.split('/')[0] if first_author: new_authordir = get_valid_filename(first_author) else: new_authordir = get_valid_filename(book.authors[0].name) titledir = book.path.split('/')[1] new_titledir = get_valid_filename(book.title) + u" (" + str(book_id) + u")" if titledir != new_titledir: gFile = gd.getFileFromEbooksFolder(os.path.dirname(book.path), titledir) if gFile: gFile['title'] = new_titledir gFile.Upload() book.path = book.path.split('/')[0] + u'/' + new_titledir path = book.path gd.updateDatabaseOnEdit(gFile['id'], book.path) # only child folder affected else: error = _(u'File %(file)s not found on Google Drive', file=book.path) # file not found if authordir != new_authordir: gFile = gd.getFileFromEbooksFolder(os.path.dirname(book.path), new_titledir) if gFile: gd.moveGdriveFolderRemote(gFile, new_authordir) book.path = new_authordir + u'/' + book.path.split('/')[1] path = book.path gd.updateDatabaseOnEdit(gFile['id'], book.path) else: error = _(u'File %(file)s not found on Google Drive', file=authordir) # file not found # Rename all files from old names to new names if authordir != new_authordir or titledir != new_titledir: new_name = get_valid_filename(book.title) + u' - ' + get_valid_filename(new_authordir) for file_format in book.data: gFile = gd.getFileFromEbooksFolder(path, file_format.name + u'.' + file_format.format.lower()) if not gFile: error = _(u'File %(file)s not found on Google Drive', file=file_format.name) # file not found break gd.moveGdriveFileRemote(gFile, new_name + u'.' + file_format.format.lower()) file_format.name = new_name return error def delete_book_gdrive(book, book_format): error= False if book_format: name = '' for entry in book.data: if entry.format.upper() == book_format: name = entry.name + '.' + book_format gFile = gd.getFileFromEbooksFolder(book.path, name) else: gFile = gd.getFileFromEbooksFolder(os.path.dirname(book.path),book.path.split('/')[1]) if gFile: gd.deleteDatabaseEntry(gFile['id']) gFile.Trash() else: error =_(u'Book path %(path)s not found on Google Drive', path=book.path) # file not found return error def generate_random_password(): s = "abcdefghijklmnopqrstuvwxyz01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%&*()?" passlen = 8 return "".join(random.sample(s,passlen )) ################################## External interface def update_dir_stucture(book_id, calibrepath, first_author = None): if ub.config.config_use_google_drive: return update_dir_structure_gdrive(book_id, first_author) else: return update_dir_structure_file(book_id, calibrepath, first_author) def delete_book(book, calibrepath, book_format): if ub.config.config_use_google_drive: return delete_book_gdrive(book, book_format) else: return delete_book_file(book, calibrepath, book_format) def get_book_cover(cover_path): if ub.config.config_use_google_drive: try: if not web.is_gdrive_ready(): return send_from_directory(os.path.join(os.path.dirname(__file__), "static"), "generic_cover.jpg") path=gd.get_cover_via_gdrive(cover_path) if path: return redirect(path) else: web.app.logger.error(cover_path + '/cover.jpg not found on Google Drive') return send_from_directory(os.path.join(os.path.dirname(__file__), "static"), "generic_cover.jpg") except Exception as e: web.app.logger.error("Error Message: " + e.message) web.app.logger.exception(e) # traceback.print_exc() return send_from_directory(os.path.join(os.path.dirname(__file__), "static"),"generic_cover.jpg") else: return send_from_directory(os.path.join(ub.config.config_calibre_dir, cover_path), "cover.jpg") # saves book cover from url def save_cover_from_url(url, book_path): img = requests.get(url) return save_cover(img, book_path) def save_cover_from_filestorage(filepath, saved_filename, img): if hasattr(img,'_content'): f = open(os.path.join(filepath, saved_filename), "wb") f.write(img._content) f.close() else: # check if file path exists, otherwise create it, copy file to calibre path and delete temp file if not os.path.exists(filepath): try: os.makedirs(filepath) except OSError: web.app.logger.error(u"Failed to create path for cover") return False try: img.save(os.path.join(filepath, saved_filename)) except OSError: web.app.logger.error(u"Failed to store cover-file") return False except IOError: web.app.logger.error(u"Cover-file is not a valid image file") return False return True # saves book cover to gdrive or locally def save_cover(img, book_path): content_type = img.headers.get('content-type') if content_type not in ('image/jpeg', 'image/png', 'image/webp'): web.app.logger.error("Only jpg/jpeg/png/webp files are supported as coverfile") return False if use_PIL: # convert to jpg because calibre only supports jpg if content_type in ('image/png', 'image/webp'): if hasattr(img,'stream'): imgc = Image.open(img.stream) else: imgc = Image.open(io.BytesIO(img.content)) im = imgc.convert('RGB') tmp_bytesio = io.BytesIO() im.save(tmp_bytesio, format='JPEG') img._content = tmp_bytesio.getvalue() if ub.config.config_use_google_drive: tmpDir = gettempdir() if save_cover_from_filestorage(tmpDir, "uploaded_cover.jpg", img) is True: gd.uploadFileToEbooksFolder(os.path.join(book_path, 'cover.jpg'), os.path.join(tmpDir, "uploaded_cover.jpg")) web.app.logger.info("Cover is saved on Google Drive") return True else: return False else: return save_cover_from_filestorage(os.path.join(ub.config.config_calibre_dir, book_path), "cover.jpg", img) def do_download_file(book, book_format, data, headers): if ub.config.config_use_google_drive: startTime = time.time() df = gd.getFileFromEbooksFolder(book.path, data.name + "." + book_format) web.app.logger.debug(time.time() - startTime) if df: return gd.do_gdrive_download(df, headers) else: abort(404) else: filename = os.path.join(ub.config.config_calibre_dir, book.path) if not os.path.isfile(os.path.join(filename, data.name + "." + book_format)): # ToDo: improve error handling web.app.logger.error('File not found: %s' % os.path.join(filename, data.name + "." + book_format)) response = make_response(send_from_directory(filename, data.name + "." + book_format)) response.headers = headers return response ################################## def check_unrar(unrarLocation): error = False if os.path.exists(unrarLocation): try: if sys.version_info < (3, 0): unrarLocation = unrarLocation.encode(sys.getfilesystemencoding()) p = subprocess.Popen(unrarLocation, stdout=subprocess.PIPE, stderr=subprocess.PIPE) p.wait() for lines in p.stdout.readlines(): if isinstance(lines, bytes): lines = lines.decode('utf-8') value=re.search('UNRAR (.*) freeware', lines) if value: version = value.group(1) except OSError as e: error = True web.app.logger.exception(e) version =_(u'Error excecuting UnRar') else: version = _(u'Unrar binary file not found') error=True return (error, version) def json_serial(obj): """JSON serializer for objects not serializable by default json code""" if isinstance(obj, (datetime)): return obj.isoformat() raise TypeError ("Type %s not serializable" % type(obj)) def render_task_status(tasklist): #helper function to apply localize status information in tasklist entries renderedtasklist=list() # task2 = task for task in tasklist: if task['user'] == current_user.nickname or current_user.role_admin(): # task2 = copy.deepcopy(task) # = task if task['formStarttime']: task['starttime'] = format_datetime(task['formStarttime'], format='short', locale=web.get_locale()) # task2['formStarttime'] = "" else: if 'starttime' not in task: task['starttime'] = "" # localize the task status if isinstance( task['stat'], int ): if task['stat'] == worker.STAT_WAITING: task['status'] = _(u'Waiting') elif task['stat'] == worker.STAT_FAIL: task['status'] = _(u'Failed') elif task['stat'] == worker.STAT_STARTED: task['status'] = _(u'Started') elif task['stat'] == worker.STAT_FINISH_SUCCESS: task['status'] = _(u'Finished') else: task['status'] = _(u'Unknown Status') # localize the task type if isinstance( task['taskType'], int ): if task['taskType'] == worker.TASK_EMAIL: task['taskMessage'] = _(u'E-mail: ') + task['taskMess'] elif task['taskType'] == worker.TASK_CONVERT: task['taskMessage'] = _(u'Convert: ') + task['taskMess'] elif task['taskType'] == worker.TASK_UPLOAD: task['taskMessage'] = _(u'Upload: ') + task['taskMess'] elif task['taskType'] == worker.TASK_CONVERT_ANY: task['taskMessage'] = _(u'Convert: ') + task['taskMess'] else: task['taskMessage'] = _(u'Unknown Task: ') + task['taskMess'] renderedtasklist.append(task) return renderedtasklist