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[youtubedl] / youtube_dl / update.py
1 from __future__ import unicode_literals
2
3 import io
4 import json
5 import traceback
6 import hashlib
7 import os
8 import subprocess
9 import sys
10 from zipimport import zipimporter
11
12 from .compat import (
13 compat_str,
14 compat_urllib_request,
15 )
16 from .version import __version__
17
18
19 def rsa_verify(message, signature, key):
20 from struct import pack
21 from hashlib import sha256
22
23 assert isinstance(message, bytes)
24 block_size = 0
25 n = key[0]
26 while n:
27 block_size += 1
28 n >>= 8
29 signature = pow(int(signature, 16), key[1], key[0])
30 raw_bytes = []
31 while signature:
32 raw_bytes.insert(0, pack("B", signature & 0xFF))
33 signature >>= 8
34 signature = (block_size - len(raw_bytes)) * b'\x00' + b''.join(raw_bytes)
35 if signature[0:2] != b'\x00\x01':
36 return False
37 signature = signature[2:]
38 if b'\x00' not in signature:
39 return False
40 signature = signature[signature.index(b'\x00') + 1:]
41 if not signature.startswith(b'\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20'):
42 return False
43 signature = signature[19:]
44 if signature != sha256(message).digest():
45 return False
46 return True
47
48
49 def update_self(to_screen, verbose):
50 """Update the program file with the latest version from the repository"""
51
52 UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
53 VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
54 JSON_URL = UPDATE_URL + 'versions.json'
55 UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
56
57 if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, "frozen"):
58 to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
59 return
60
61 # Check if there is a new version
62 try:
63 newversion = compat_urllib_request.urlopen(VERSION_URL).read().decode('utf-8').strip()
64 except:
65 if verbose:
66 to_screen(compat_str(traceback.format_exc()))
67 to_screen('ERROR: can\'t find the current version. Please try again later.')
68 return
69 if newversion == __version__:
70 to_screen('youtube-dl is up-to-date (' + __version__ + ')')
71 return
72
73 # Download and check versions info
74 try:
75 versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8')
76 versions_info = json.loads(versions_info)
77 except:
78 if verbose:
79 to_screen(compat_str(traceback.format_exc()))
80 to_screen('ERROR: can\'t obtain versions info. Please try again later.')
81 return
82 if not 'signature' in versions_info:
83 to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
84 return
85 signature = versions_info['signature']
86 del versions_info['signature']
87 if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
88 to_screen('ERROR: the versions file signature is invalid. Aborting.')
89 return
90
91 version_id = versions_info['latest']
92
93 def version_tuple(version_str):
94 return tuple(map(int, version_str.split('.')))
95 if version_tuple(__version__) >= version_tuple(version_id):
96 to_screen('youtube-dl is up to date (%s)' % __version__)
97 return
98
99 to_screen('Updating to version ' + version_id + ' ...')
100 version = versions_info['versions'][version_id]
101
102 print_notes(to_screen, versions_info['versions'])
103
104 filename = sys.argv[0]
105 # Py2EXE: Filename could be different
106 if hasattr(sys, "frozen") and not os.path.isfile(filename):
107 if os.path.isfile(filename + '.exe'):
108 filename += '.exe'
109
110 if not os.access(filename, os.W_OK):
111 to_screen('ERROR: no write permissions on %s' % filename)
112 return
113
114 # Py2EXE
115 if hasattr(sys, "frozen"):
116 exe = os.path.abspath(filename)
117 directory = os.path.dirname(exe)
118 if not os.access(directory, os.W_OK):
119 to_screen('ERROR: no write permissions on %s' % directory)
120 return
121
122 try:
123 urlh = compat_urllib_request.urlopen(version['exe'][0])
124 newcontent = urlh.read()
125 urlh.close()
126 except (IOError, OSError):
127 if verbose:
128 to_screen(compat_str(traceback.format_exc()))
129 to_screen('ERROR: unable to download latest version')
130 return
131
132 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
133 if newcontent_hash != version['exe'][1]:
134 to_screen('ERROR: the downloaded file hash does not match. Aborting.')
135 return
136
137 try:
138 with open(exe + '.new', 'wb') as outf:
139 outf.write(newcontent)
140 except (IOError, OSError):
141 if verbose:
142 to_screen(compat_str(traceback.format_exc()))
143 to_screen('ERROR: unable to write the new version')
144 return
145
146 try:
147 bat = os.path.join(directory, 'youtube-dl-updater.bat')
148 with io.open(bat, 'w') as batfile:
149 batfile.write('''
150 @echo off
151 echo Waiting for file handle to be closed ...
152 ping 127.0.0.1 -n 5 -w 1000 > NUL
153 move /Y "%s.new" "%s" > NUL
154 echo Updated youtube-dl to version %s.
155 start /b "" cmd /c del "%%~f0"&exit /b"
156 \n''' % (exe, exe, version_id))
157
158 subprocess.Popen([bat]) # Continues to run in the background
159 return # Do not show premature success messages
160 except (IOError, OSError):
161 if verbose:
162 to_screen(compat_str(traceback.format_exc()))
163 to_screen('ERROR: unable to overwrite current version')
164 return
165
166 # Zip unix package
167 elif isinstance(globals().get('__loader__'), zipimporter):
168 try:
169 urlh = compat_urllib_request.urlopen(version['bin'][0])
170 newcontent = urlh.read()
171 urlh.close()
172 except (IOError, OSError):
173 if verbose:
174 to_screen(compat_str(traceback.format_exc()))
175 to_screen('ERROR: unable to download latest version')
176 return
177
178 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
179 if newcontent_hash != version['bin'][1]:
180 to_screen('ERROR: the downloaded file hash does not match. Aborting.')
181 return
182
183 try:
184 with open(filename, 'wb') as outf:
185 outf.write(newcontent)
186 except (IOError, OSError):
187 if verbose:
188 to_screen(compat_str(traceback.format_exc()))
189 to_screen('ERROR: unable to overwrite current version')
190 return
191
192 to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')
193
194
195 def get_notes(versions, fromVersion):
196 notes = []
197 for v, vdata in sorted(versions.items()):
198 if v > fromVersion:
199 notes.extend(vdata.get('notes', []))
200 return notes
201
202
203 def print_notes(to_screen, versions, fromVersion=__version__):
204 notes = get_notes(versions, fromVersion)
205 if notes:
206 to_screen('PLEASE NOTE:')
207 for note in notes:
208 to_screen(note)