aboutsummaryrefslogtreecommitdiff
path: root/youtube_dl/update.py
blob: a14265c1b8086d508d6714507f374f4cc8b3b19d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
from __future__ import unicode_literals

import io
import json
import traceback
import hashlib
import os
import subprocess
import sys
from zipimport import zipimporter

from .utils import encode_compat_str

from .version import __version__


def rsa_verify(message, signature, key):
    from hashlib import sha256
    assert isinstance(message, bytes)
    byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8
    signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode()
    signature = (byte_size * 2 - len(signature)) * b'0' + signature
    asn1 = b'3031300d060960864801650304020105000420'
    asn1 += sha256(message).hexdigest().encode()
    if byte_size < len(asn1) // 2 + 11:
        return False
    expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1
    return expected == signature


def update_self(to_screen, verbose, opener):
    """Update the program file with the latest version from the repository"""

    UPDATE_URL = 'https://ytdl-org.github.io/youtube-dl/update/'
    VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
    JSON_URL = UPDATE_URL + 'versions.json'
    UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)

    if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, 'frozen'):
        to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
        return

    # Check if there is a new version
    try:
        newversion = opener.open(VERSION_URL).read().decode('utf-8').strip()
    except Exception:
        if verbose:
            to_screen(encode_compat_str(traceback.format_exc()))
        to_screen('ERROR: can\'t find the current version. Please try again later.')
        return
    if newversion == __version__:
        to_screen('youtube-dl is up-to-date (' + __version__ + ')')
        return

    # Download and check versions info
    try:
        versions_info = opener.open(JSON_URL).read().decode('utf-8')
        versions_info = json.loads(versions_info)
    except Exception:
        if verbose:
            to_screen(encode_compat_str(traceback.format_exc()))
        to_screen('ERROR: can\'t obtain versions info. Please try again later.')
        return
    if 'signature' not in versions_info:
        to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
        return
    signature = versions_info['signature']
    del versions_info['signature']
    if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
        to_screen('ERROR: the versions file signature is invalid. Aborting.')
        return

    version_id = versions_info['latest']

    def version_tuple(version_str):
        return tuple(map(int, version_str.split('.')))
    if version_tuple(__version__) >= version_tuple(version_id):
        to_screen('youtube-dl is up to date (%s)' % __version__)
        return

    to_screen('Updating to version ' + version_id + ' ...')
    version = versions_info['versions'][version_id]

    print_notes(to_screen, versions_info['versions'])

    # sys.executable is set to the full pathname of the exe-file for py2exe
    filename = sys.executable if hasattr(sys, 'frozen') else sys.argv[0]

    if not os.access(filename, os.W_OK):
        to_screen('ERROR: no write permissions on %s' % filename)
        return

    # Py2EXE
    if hasattr(sys, 'frozen'):
        exe = filename
        directory = os.path.dirname(exe)
        if not os.access(directory, os.W_OK):
            to_screen('ERROR: no write permissions on %s' % directory)
            return

        try:
            urlh = opener.open(version['exe'][0])
            newcontent = urlh.read()
            urlh.close()
        except (IOError, OSError):
            if verbose:
                to_screen(encode_compat_str(traceback.format_exc()))
            to_screen('ERROR: unable to download latest version')
            return

        newcontent_hash = hashlib.sha256(newcontent).hexdigest()
        if newcontent_hash != version['exe'][1]:
            to_screen('ERROR: the downloaded file hash does not match. Aborting.')
            return

        try:
            with open(exe + '.new', 'wb') as outf:
                outf.write(newcontent)
        except (IOError, OSError):
            if verbose:
                to_screen(encode_compat_str(traceback.format_exc()))
            to_screen('ERROR: unable to write the new version')
            return

        try:
            bat = os.path.join(directory, 'youtube-dl-updater.bat')
            with io.open(bat, 'w') as batfile:
                batfile.write('''
@echo off
echo Waiting for file handle to be closed ...
ping 127.0.0.1 -n 5 -w 1000 > NUL
move /Y "%s.new" "%s" > NUL
echo Updated youtube-dl to version %s.
start /b "" cmd /c del "%%~f0"&exit /b"
                \n''' % (exe, exe, version_id))

            subprocess.Popen([bat])  # Continues to run in the background
            return  # Do not show premature success messages
        except (IOError, OSError):
            if verbose:
                to_screen(encode_compat_str(traceback.format_exc()))
            to_screen('ERROR: unable to overwrite current version')
            return

    # Zip unix package
    elif isinstance(globals().get('__loader__'), zipimporter):
        try:
            urlh = opener.open(version['bin'][0])
            newcontent = urlh.read()
            urlh.close()
        except (IOError, OSError):
            if verbose:
                to_screen(encode_compat_str(traceback.format_exc()))
            to_screen('ERROR: unable to download latest version')
            return

        newcontent_hash = hashlib.sha256(newcontent).hexdigest()
        if newcontent_hash != version['bin'][1]:
            to_screen('ERROR: the downloaded file hash does not match. Aborting.')
            return

        try:
            with open(filename, 'wb') as outf:
                outf.write(newcontent)
        except (IOError, OSError):
            if verbose:
                to_screen(encode_compat_str(traceback.format_exc()))
            to_screen('ERROR: unable to overwrite current version')
            return

    to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')


def get_notes(versions, fromVersion):
    notes = []
    for v, vdata in sorted(versions.items()):
        if v > fromVersion:
            notes.extend(vdata.get('notes', []))
    return notes


def print_notes(to_screen, versions, fromVersion=__version__):
    notes = get_notes(versions, fromVersion)
    if notes:
        to_screen('PLEASE NOTE:')
        for note in notes:
            to_screen(note)