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