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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 .utils import encode_compat_str
13
14 from .version import __version__
15
16
17 def rsa_verify(message, signature, key):
18 from hashlib import sha256
19 assert isinstance(message, bytes)
20 byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8
21 signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode()
22 signature = (byte_size * 2 - len(signature)) * b'0' + signature
23 asn1 = b'3031300d060960864801650304020105000420'
24 asn1 += sha256(message).hexdigest().encode()
25 if byte_size < len(asn1) // 2 + 11:
26 return False
27 expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1
28 return expected == signature
29
30
31 def update_self(to_screen, verbose, opener):
32 """Update the program file with the latest version from the repository"""
33
34 UPDATE_URL = 'https://rg3.github.io/youtube-dl/update/'
35 VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
36 JSON_URL = UPDATE_URL + 'versions.json'
37 UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
38
39 if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, 'frozen'):
40 to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
41 return
42
43 # Check if there is a new version
44 try:
45 newversion = opener.open(VERSION_URL).read().decode('utf-8').strip()
46 except Exception:
47 if verbose:
48 to_screen(encode_compat_str(traceback.format_exc()))
49 to_screen('ERROR: can\'t find the current version. Please try again later.')
50 return
51 if newversion == __version__:
52 to_screen('youtube-dl is up-to-date (' + __version__ + ')')
53 return
54
55 # Download and check versions info
56 try:
57 versions_info = opener.open(JSON_URL).read().decode('utf-8')
58 versions_info = json.loads(versions_info)
59 except Exception:
60 if verbose:
61 to_screen(encode_compat_str(traceback.format_exc()))
62 to_screen('ERROR: can\'t obtain versions info. Please try again later.')
63 return
64 if 'signature' not in versions_info:
65 to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
66 return
67 signature = versions_info['signature']
68 del versions_info['signature']
69 if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
70 to_screen('ERROR: the versions file signature is invalid. Aborting.')
71 return
72
73 version_id = versions_info['latest']
74
75 def version_tuple(version_str):
76 return tuple(map(int, version_str.split('.')))
77 if version_tuple(__version__) >= version_tuple(version_id):
78 to_screen('youtube-dl is up to date (%s)' % __version__)
79 return
80
81 to_screen('Updating to version ' + version_id + ' ...')
82 version = versions_info['versions'][version_id]
83
84 print_notes(to_screen, versions_info['versions'])
85
86 # sys.executable is set to the full pathname of the exe-file for py2exe
87 filename = sys.executable if hasattr(sys, 'frozen') else sys.argv[0]
88
89 if not os.access(filename, os.W_OK):
90 to_screen('ERROR: no write permissions on %s' % filename)
91 return
92
93 # Py2EXE
94 if hasattr(sys, 'frozen'):
95 exe = filename
96 directory = os.path.dirname(exe)
97 if not os.access(directory, os.W_OK):
98 to_screen('ERROR: no write permissions on %s' % directory)
99 return
100
101 try:
102 urlh = opener.open(version['exe'][0])
103 newcontent = urlh.read()
104 urlh.close()
105 except (IOError, OSError):
106 if verbose:
107 to_screen(encode_compat_str(traceback.format_exc()))
108 to_screen('ERROR: unable to download latest version')
109 return
110
111 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
112 if newcontent_hash != version['exe'][1]:
113 to_screen('ERROR: the downloaded file hash does not match. Aborting.')
114 return
115
116 try:
117 with open(exe + '.new', 'wb') as outf:
118 outf.write(newcontent)
119 except (IOError, OSError):
120 if verbose:
121 to_screen(encode_compat_str(traceback.format_exc()))
122 to_screen('ERROR: unable to write the new version')
123 return
124
125 try:
126 bat = os.path.join(directory, 'youtube-dl-updater.bat')
127 with io.open(bat, 'w') as batfile:
128 batfile.write('''
129 @echo off
130 echo Waiting for file handle to be closed ...
131 ping 127.0.0.1 -n 5 -w 1000 > NUL
132 move /Y "%s.new" "%s" > NUL
133 echo Updated youtube-dl to version %s.
134 start /b "" cmd /c del "%%~f0"&exit /b"
135 \n''' % (exe, exe, version_id))
136
137 subprocess.Popen([bat]) # Continues to run in the background
138 return # Do not show premature success messages
139 except (IOError, OSError):
140 if verbose:
141 to_screen(encode_compat_str(traceback.format_exc()))
142 to_screen('ERROR: unable to overwrite current version')
143 return
144
145 # Zip unix package
146 elif isinstance(globals().get('__loader__'), zipimporter):
147 try:
148 urlh = opener.open(version['bin'][0])
149 newcontent = urlh.read()
150 urlh.close()
151 except (IOError, OSError):
152 if verbose:
153 to_screen(encode_compat_str(traceback.format_exc()))
154 to_screen('ERROR: unable to download latest version')
155 return
156
157 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
158 if newcontent_hash != version['bin'][1]:
159 to_screen('ERROR: the downloaded file hash does not match. Aborting.')
160 return
161
162 try:
163 with open(filename, 'wb') as outf:
164 outf.write(newcontent)
165 except (IOError, OSError):
166 if verbose:
167 to_screen(encode_compat_str(traceback.format_exc()))
168 to_screen('ERROR: unable to overwrite current version')
169 return
170
171 to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')
172
173
174 def get_notes(versions, fromVersion):
175 notes = []
176 for v, vdata in sorted(versions.items()):
177 if v > fromVersion:
178 notes.extend(vdata.get('notes', []))
179 return notes
180
181
182 def print_notes(to_screen, versions, fromVersion=__version__):
183 notes = get_notes(versions, fromVersion)
184 if notes:
185 to_screen('PLEASE NOTE:')
186 for note in notes:
187 to_screen(note)