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[youtubedl] / youtube_dl / update.py
1 import io
2 import json
3 import traceback
4 import hashlib
5 import subprocess
6 import sys
7 from zipimport import zipimporter
8
9 from .utils import *
10 from .version import __version__
11
12 def rsa_verify(message, signature, key):
13 from struct import pack
14 from hashlib import sha256
15 from sys import version_info
16 def b(x):
17 if version_info[0] == 2: return x
18 else: return x.encode('latin1')
19 assert(type(message) == type(b('')))
20 block_size = 0
21 n = key[0]
22 while n:
23 block_size += 1
24 n >>= 8
25 signature = pow(int(signature, 16), key[1], key[0])
26 raw_bytes = []
27 while signature:
28 raw_bytes.insert(0, pack("B", signature & 0xFF))
29 signature >>= 8
30 signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes)
31 if signature[0:2] != b('\x00\x01'): return False
32 signature = signature[2:]
33 if not b('\x00') in signature: return False
34 signature = signature[signature.index(b('\x00'))+1:]
35 if not signature.startswith(b('\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20')): return False
36 signature = signature[19:]
37 if signature != sha256(message).digest(): return False
38 return True
39
40 def update_self(to_screen, verbose):
41 """Update the program file with the latest version from the repository"""
42
43 UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
44 VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
45 JSON_URL = UPDATE_URL + 'versions.json'
46 UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
47
48 if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, "frozen"):
49 to_screen(u'It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
50 return
51
52 # Check if there is a new version
53 try:
54 newversion = compat_urllib_request.urlopen(VERSION_URL).read().decode('utf-8').strip()
55 except:
56 if verbose: to_screen(compat_str(traceback.format_exc()))
57 to_screen(u'ERROR: can\'t find the current version. Please try again later.')
58 return
59 if newversion == __version__:
60 to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
61 return
62
63 # Download and check versions info
64 try:
65 versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8')
66 versions_info = json.loads(versions_info)
67 except:
68 if verbose: to_screen(compat_str(traceback.format_exc()))
69 to_screen(u'ERROR: can\'t obtain versions info. Please try again later.')
70 return
71 if not 'signature' in versions_info:
72 to_screen(u'ERROR: the versions file is not signed or corrupted. Aborting.')
73 return
74 signature = versions_info['signature']
75 del versions_info['signature']
76 if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
77 to_screen(u'ERROR: the versions file signature is invalid. Aborting.')
78 return
79
80 version_id = versions_info['latest']
81 to_screen(u'Updating to version ' + version_id + '...')
82 version = versions_info['versions'][version_id]
83
84 print_notes(to_screen, versions_info['versions'])
85
86 filename = sys.argv[0]
87 # Py2EXE: Filename could be different
88 if hasattr(sys, "frozen") and not os.path.isfile(filename):
89 if os.path.isfile(filename + u'.exe'):
90 filename += u'.exe'
91
92 if not os.access(filename, os.W_OK):
93 to_screen(u'ERROR: no write permissions on %s' % filename)
94 return
95
96 # Py2EXE
97 if hasattr(sys, "frozen"):
98 exe = os.path.abspath(filename)
99 directory = os.path.dirname(exe)
100 if not os.access(directory, os.W_OK):
101 to_screen(u'ERROR: no write permissions on %s' % directory)
102 return
103
104 try:
105 urlh = compat_urllib_request.urlopen(version['exe'][0])
106 newcontent = urlh.read()
107 urlh.close()
108 except (IOError, OSError) as err:
109 if verbose: to_screen(compat_str(traceback.format_exc()))
110 to_screen(u'ERROR: unable to download latest version')
111 return
112
113 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
114 if newcontent_hash != version['exe'][1]:
115 to_screen(u'ERROR: the downloaded file hash does not match. Aborting.')
116 return
117
118 try:
119 with open(exe + '.new', 'wb') as outf:
120 outf.write(newcontent)
121 except (IOError, OSError) as err:
122 if verbose: to_screen(compat_str(traceback.format_exc()))
123 to_screen(u'ERROR: unable to write the new version')
124 return
125
126 try:
127 bat = os.path.join(directory, 'youtube-dl-updater.bat')
128 with io.open(bat, 'w') as batfile:
129 batfile.write(u"""
130 @echo off
131 echo Waiting for file handle to be closed ...
132 ping 127.0.0.1 -n 5 -w 1000 > NUL
133 move /Y "%s.new" "%s" > NUL
134 echo Updated youtube-dl to version %s.
135 start /b "" cmd /c del "%%~f0"&exit /b"
136 \n""" % (exe, exe, version_id))
137
138 subprocess.Popen([bat]) # Continues to run in the background
139 return # Do not show premature success messages
140 except (IOError, OSError) as err:
141 if verbose: to_screen(compat_str(traceback.format_exc()))
142 to_screen(u'ERROR: unable to overwrite current version')
143 return
144
145 # Zip unix package
146 elif isinstance(globals().get('__loader__'), zipimporter):
147 try:
148 urlh = compat_urllib_request.urlopen(version['bin'][0])
149 newcontent = urlh.read()
150 urlh.close()
151 except (IOError, OSError) as err:
152 if verbose: to_screen(compat_str(traceback.format_exc()))
153 to_screen(u'ERROR: unable to download latest version')
154 return
155
156 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
157 if newcontent_hash != version['bin'][1]:
158 to_screen(u'ERROR: the downloaded file hash does not match. Aborting.')
159 return
160
161 try:
162 with open(filename, 'wb') as outf:
163 outf.write(newcontent)
164 except (IOError, OSError) as err:
165 if verbose: to_screen(compat_str(traceback.format_exc()))
166 to_screen(u'ERROR: unable to overwrite current version')
167 return
168
169 to_screen(u'Updated youtube-dl. Restart youtube-dl to use the new version.')
170
171 def get_notes(versions, fromVersion):
172 notes = []
173 for v,vdata in sorted(versions.items()):
174 if v > fromVersion:
175 notes.extend(vdata.get('notes', []))
176 return notes
177
178 def print_notes(to_screen, versions, fromVersion=__version__):
179 notes = get_notes(versions, fromVersion)
180 if notes:
181 to_screen(u'PLEASE NOTE:')
182 for note in notes:
183 to_screen(note)