X-Git-Url: https://git.phdru.name/?p=extfs.d.git;a=blobdiff_plain;f=torrent;h=a0f827ef91f7ad213d7ab70445e9ef0e54e6175a;hp=a84585654674e8f7da4773ef3376d87b91435dac;hb=HEAD;hpb=b94b085d131d41d2dc15a98089208cfb4be7d6b2 diff --git a/torrent b/torrent index a845856..a0f827e 100755 --- a/torrent +++ b/torrent @@ -1,42 +1,80 @@ -#! /usr/bin/env python - +#! /usr/bin/env python3 """Torrent Virtual FileSystem for Midnight Commander The script requires Midnight Commander 3.1+ (http://www.midnight-commander.org/), Python 2.4+ (http://www.python.org/), module eff_bdecode.py (http://effbot.org/zone/bencode.htm). -Put the script in the /usr/[local/][lib|share]/mc/extfs/, and add a line -"torrent" to the /usr/[local/][lib|share]/mc/extfs/extfs.ini. Make the script -executable. +For mc 4.7+ just put the script in $HOME/[.local/share/].mc/extfs.d. +For older versions put it in /usr/[local/][lib|share]/mc/extfs +and add a line "torrent" to the /usr/[local/][lib|share]/mc/extfs/extfs.ini. +Make the script executable. + +For mc 4.7+ run this "cd" command in the Midnight Commander (in the "bindings" +file the command is "%cd"): cd file/torrent://; In older versions it is +cd file#torrent, where "file" is the name of your torrent metafile. + +See detailed installation instructions at +https://phdru.name/Software/mc/torrent_INSTALL.html. -Run this "cd" command in the Midnight Commander (in the "bindings" file the -command is "%cd"): cd file#torrent, where "file" is the name of your torrent -metafile. The VFS lists all files and directories from the torrent metafile; -all files appear empty, of course, but the sizes are shown. +The VFS lists all files and directories from the torrent metafile; all files +appear empty, of course, but the sizes are shown. Filenames are reencoded from +the metafile's encoding/codepage to the current locale. Along with the files/directories in the torrent metafile the VFS also presents meta information - in the form of files in .META directory. The size and contents of these files are taken from the corresponding fields in the torrent -metafile. The VFS doesn't check if the torrent contains .META file or directory -(quite unlikely). +metafile. The script doesn't check if the torrent consists of a .META file or +directory (quite unlikely). -Date/time for all files is set at midnight of the 1st January of the current -year. +Date/time for all directories/files is set to the value of 'creation date' +field, if it exists; if not date/time is set to the last modification time of +the torrent file itself. + +The filesystem is, naturally, read-only. """ -__version__ = "1.0.0" -__revision__ = "$Id$" -__date__ = "$Date$" -__author__ = "Oleg Broytman " -__copyright__ = "Copyright (C) 2010 PhiloSoft Design" +__version__ = "1.3.1" +__author__ = "Oleg Broytman " +__copyright__ = "Copyright (C) 2010-2023 PhiloSoft Design" __license__ = "GPL" -import locale, sys, os -from tempfile import _candidate_tempdir_list + +from datetime import datetime +from os.path import dirname, getmtime +import sys +from time import localtime, asctime from eff_bdecode import decode +try: + import locale + use_locale = True +except ImportError: + use_locale = False + +if use_locale: + # Get the default charset. + try: + if sys.version_info[:2] < (3, 11): + lcAll = locale.getdefaultlocale() + else: + lcAll = [] + except locale.Error as err: + #print("WARNING:", err, file=sys.stderr) + lcAll = [] + + if len(lcAll) == 2: + default_encoding = lcAll[1] + else: + try: + default_encoding = locale.getpreferredencoding() + except locale.Error as err: + #print("WARNING:", err, file=sys.stderr) + default_encoding = sys.getdefaultencoding() +else: + default_encoding = sys.getdefaultencoding() + import logging logger = logging.getLogger('torrent-mcextfs') log_err_handler = logging.StreamHandler(sys.stderr) @@ -49,75 +87,85 @@ Torrent Virtual FileSystem for Midnight Commander version %s Author: %s %s -This is not a program. Put the script in /usr/[local/][lib|share]/mc/extfs. -For more information read the source!""", - __version__, __author__, __copyright__ -) +This is not a program. Put the script in $HOME/[.local/share/].mc/extfs.d or +/usr/[local/][lib|share]/mc/extfs. For more information read the source!""", + __version__, __author__, __copyright__) sys.exit(1) - -tempdirlist = _candidate_tempdir_list() -tempdirlist.insert(0, os.path.abspath(os.path.dirname(sys.argv[2]))) - -found = False -for tempdir in tempdirlist: - try: - logfile_name = os.path.join(tempdir, 'torrent-mcextfs.log') - logfile = open(logfile_name, 'w') - except IOError: - pass - else: - found = True - logfile.close() - break - -if not found: - logger.critical("Cannot initialize error log file in directories %s" % str(tempdirlist)) - sys.exit(1) - -logger.removeHandler(log_err_handler) -logger.addHandler(logging.FileHandler(logfile_name)) - locale.setlocale(locale.LC_ALL, '') -charset = locale.getpreferredencoding() + +PY3 = (sys.version_info[0] >= 3) +if PY3: + def output(s): + sys.stdout.buffer.write(s.encode(default_encoding, 'replace') + b'\n') +else: + def output(s): + sys.stdout.write(s + '\n') def mctorrent_list(): """List the entire VFS""" - if 'info' not in torrent: - torrent_error('Info absent') - info = torrent['info'] - if 'name' not in info: + if 'name' not in info and 'name.utf-8' not in info: torrent_error('Unknown name') + codepage = torrent.get('codepage', None) + encoding = torrent.get('encoding', None) + if not encoding and codepage: + encoding = str(codepage) + name = info['name'] + name_utf8 = info.get('name.utf-8', None) + + dt = None if 'files' in info: files = info['files'] paths = [] for file in files: - if 'path' not in file: + if 'path' not in file and 'path.utf-8' not in file: torrent_error('Unknown path') if 'length' not in file: torrent_error('Unknown length') - path = file['path'] + if 'path.utf-8' in file: + if name_utf8: + path = '/'.join([name_utf8] + file['path.utf-8']) + else: + path = '/'.join([name] + file['path.utf-8']) + else: + if name_utf8: + path = '/'.join([name_utf8] + path) + else: + path = '/'.join([name] + file['path']) length = file['length'] - paths.append(('/'.join([name] + path), length)) - else: # One-file torrent + paths.append((path, length)) + else: # One-file torrent if 'length' not in info: torrent_error('Unknown length') length = info['length'] + if name_utf8: + name = name_utf8 paths = [(name, length)] meta = [] - for name in 'comment', 'encoding', 'creation date', 'announce-list', \ - 'created by', 'announce': - if name in torrent: - if name == 'creation date': - data = decode_datetime(torrent[name]) - elif name == 'announce-list': - data = decode_list(torrent[name]) + for name in 'announce', 'announce-list', 'codepage', 'comment', \ + 'created by', 'creation date', 'encoding', \ + 'nodes', 'publisher', 'publisher-url': + if name == 'comment' and 'comment.utf-8' in torrent: + data = torrent['comment.utf-8'] + meta.append(('.META/' + name, len(data))) + elif name in torrent: + if name == 'announce-list': + data = decode_announce_list(torrent[name]) + elif name == 'codepage': + data = str(torrent[name]) + elif name == 'creation date': + dt = torrent[name] + data = decode_datetime_asc(dt) + dt = decode_datetime(dt) + elif name == 'nodes': + data = ['%s:%s' % (host, port) for host, port in torrent[name]] + data = '\n'.join(data) else: data = torrent[name] meta.append(('.META/' + name, len(data))) @@ -125,8 +173,23 @@ def mctorrent_list(): if 'private' in info: meta.append(('.META/private', 1)) - for name, size in paths + meta: - print "-r--r--r-- 1 user group %d Jan 1 00:00 %s" % (size, name) + if 'piece length' in info: + meta.append(('.META/piece length', len(str(info['piece length'])))) + + paths += meta + dirs = set() + for name, size in paths: + if '/' in name: + dirs.add(dirname(name)) + + if not dt: + dt = decode_datetime(getmtime(sys.argv[2])) + + for name in sorted(dirs): + output("dr-xr-xr-x 1 user group 0 %s %s" % (dt, name)) + + for name, size in sorted(paths): + output("-r--r--r-- 1 user group %d %s %s" % (size, dt, name)) def mctorrent_copyout(): @@ -136,27 +199,38 @@ def mctorrent_copyout(): real_filename = sys.argv[4] data = None - for name in 'comment', 'encoding', 'creation date', 'announce-list', \ - 'created by', 'announce': - if torrent_filename == '.META/' + name: + for name in 'announce', 'announce-list', 'codepage', 'comment', \ + 'created by', 'creation date', 'encoding', \ + 'nodes', 'publisher', 'publisher-url': + if name == 'comment' and 'comment.utf-8' in torrent: + data = torrent['comment.utf-8'] + elif torrent_filename == '.META/' + name: if name in torrent: - if name == 'creation date': - data = decode_datetime(torrent[name]) - elif name == 'announce-list': - data = decode_list(torrent[name]) + if name == 'announce-list': + data = decode_announce_list(torrent[name]) + elif name == 'codepage': + data = str(torrent[name]) + elif name == 'creation date': + data = decode_datetime_asc(torrent[name]) + elif name == 'nodes': + data = ['%s:%s' % (host, port) + for host, port in torrent[name]] + data = '\n'.join(data) else: data = str(torrent[name]) else: torrent_error('Unknown ' + name) break - if torrent_filename == '.META/private': - if 'info' not in torrent: - torrent_error('Info absent') + if torrent_filename in ('.META/private', '.META/piece length'): info = torrent['info'] - if 'private' not in info: - torrent_error('Info absent') - data = str(info['private']) + if torrent_filename == '.META/private': + if 'private' not in info: + torrent_error('Private absent') + if torrent_filename == '.META/piece length': + if 'piece length' not in info: + torrent_error('Piece length absent') + data = str(info[torrent_filename[len('.META/'):]]) if not torrent_filename.startswith('.META/'): data = '' @@ -164,55 +238,122 @@ def mctorrent_copyout(): if data is None: torrent_error('Unknown file name') else: - outfile = open(real_filename, 'w') + outfile = open(real_filename, 'wt') outfile.write(data) outfile.close() def mctorrent_copyin(): """Put a file to the VFS""" - sys.exit("Torrent VFS doesn't support adding files") + sys.exit("Torrent VFS doesn't support adding/overwriting files " + "(read-only filesystem)") + def mctorrent_rm(): """Remove a file from the VFS""" - sys.exit("Torrent VFS doesn't support removing files/directories") + sys.exit("Torrent VFS doesn't support removing files/directories " + "(read-only filesystem)") + mctorrent_rmdir = mctorrent_rm + def mctorrent_mkdir(): """Create a directory in the VFS""" - sys.exit("Torrent VFS doesn't support creating directories") + sys.exit("Torrent VFS doesn't support creating directories " + "(read-only filesystem)") def torrent_error(error_str): logger.critical("Error parsing the torrent metafile: %s", error_str) sys.exit(1) + +def decode_dict(d, encoding): + new_d = {} + for k in d: + v = d[k] + k = k.decode(encoding) + if isinstance(v, dict): + v = decode_dict(v, encoding) + elif isinstance(v, list): + v = decode_list(v, encoding) + elif isinstance(v, bytes): + v = v.decode(encoding) + new_d[k] = v + return new_d + + +def decode_list(l, encoding): + new_l = [] + for v in l: + if isinstance(v, dict): + v = decode_dict(v, encoding) + elif isinstance(v, list): + v = decode_list(v, encoding) + elif isinstance(v, bytes): + v = v.decode(encoding) + new_l.append(v) + return new_l + + def decode_torrent(): try: - torrent_file = open(sys.argv[2], 'r') + torrent_file = open(sys.argv[2], 'rb') data = torrent_file.read() torrent_file.close() - return decode(data) - except IOError, error_str: + torrent = decode(data) + except IOError as error_str: torrent_error(error_str) + del torrent[b'info'][b'pieces'] + if b'info' not in torrent: + torrent_error('Info absent') + + if PY3: + codepage = torrent.get(b'codepage', None) + encoding = torrent.get(b'encoding', None) + if encoding: + encoding = encoding.decode('ascii') + elif codepage: + encoding = codepage.decode('ascii') + else: + for encoding in ('ascii', 'utf-8', default_encoding): + try: + return decode_dict(torrent, encoding) + except UnicodeDecodeError: + pass + torrent_error('UnicodeDecodeError') + return decode_dict(torrent, encoding) + + return torrent + + +def decode_datetime_asc(dt): + try: + return asctime(localtime(float(dt))) + except ValueError: + return datetime.max.ctime() + def decode_datetime(dt): - from time import localtime, asctime - the_time = float(dt) - l_now = localtime(the_time) - return asctime(l_now) + try: + Y, m, d, H, M = localtime(float(dt))[0:5] + except ValueError: + return datetime.max.ctime() + else: + return "%02d-%02d-%d %02d:%02d" % (m, d, Y, H, M) + -def decode_list(announce): - return '\n'.join(l[0] for l in announce) +def decode_announce_list(announce): + return '\n'.join(a[0] for a in announce if a) command = sys.argv[1] procname = "mctorrent_" + command g = globals() -if not g.has_key(procname): +if procname not in g: logger.critical("Unknown command %s", command) sys.exit(1) @@ -222,5 +363,5 @@ try: g[procname]() except SystemExit: raise -except: +except Exception: logger.exception("Error during run")