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#!/usr/bin/env python |
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import sys, os |
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import json, hashlib |
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try: |
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import urllib.request as compat_urllib_request |
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except ImportError: # Python 2 |
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import urllib2 as compat_urllib_request |
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def rsa_verify(message, signature, key): |
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from struct import pack |
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from hashlib import sha256 |
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from sys import version_info |
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def b(x): |
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if version_info[0] == 2: return x |
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else: return x.encode('latin1') |
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assert(type(message) == type(b(''))) |
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block_size = 0 |
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n = key[0] |
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while n: |
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block_size += 1 |
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n >>= 8 |
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signature = pow(int(signature, 16), key[1], key[0]) |
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raw_bytes = [] |
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while signature: |
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raw_bytes.insert(0, pack("B", signature & 0xFF)) |
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signature >>= 8 |
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signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes) |
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if signature[0:2] != b('\x00\x01'): return False |
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signature = signature[2:] |
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if not b('\x00') in signature: return False |
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signature = signature[signature.index(b('\x00'))+1:] |
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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 |
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signature = signature[19:] |
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if signature != sha256(message).digest(): return False |
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return True |
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sys.stderr.write(u'Hi! We changed distribution method and now youtube-dl needs to update itself one more time.\n') |
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sys.stderr.write(u'This will only happen once. Simply press enter to go on. Sorry for the trouble!\n') |
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sys.stderr.write(u'From now on, get the binaries from http://rg3.github.io/youtube-dl/download.html, not from the git repository.\n\n') |
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try: |
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raw_input() |
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except NameError: # Python 3 |
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input() |
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filename = sys.argv[0] |
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UPDATE_URL = "http://rg3.github.io/youtube-dl/update/" |
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VERSION_URL = UPDATE_URL + 'LATEST_VERSION' |
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JSON_URL = UPDATE_URL + 'versions.json' |
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UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537) |
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if not os.access(filename, os.W_OK): |
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sys.exit('ERROR: no write permissions on %s' % filename) |
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try: |
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versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8') |
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versions_info = json.loads(versions_info) |
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except: |
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sys.exit(u'ERROR: can\'t obtain versions info. Please try again later.') |
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if not 'signature' in versions_info: |
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sys.exit(u'ERROR: the versions file is not signed or corrupted. Aborting.') |
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signature = versions_info['signature'] |
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del versions_info['signature'] |
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if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY): |
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sys.exit(u'ERROR: the versions file signature is invalid. Aborting.') |
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version = versions_info['versions'][versions_info['latest']] |
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try: |
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urlh = compat_urllib_request.urlopen(version['bin'][0]) |
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newcontent = urlh.read() |
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urlh.close() |
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except (IOError, OSError) as err: |
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sys.exit('ERROR: unable to download latest version') |
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newcontent_hash = hashlib.sha256(newcontent).hexdigest() |
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if newcontent_hash != version['bin'][1]: |
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sys.exit(u'ERROR: the downloaded file hash does not match. Aborting.') |
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try: |
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with open(filename, 'wb') as outf: |
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outf.write(newcontent) |
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except (IOError, OSError) as err: |
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sys.exit('ERROR: unable to overwrite current version') |
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sys.stderr.write(u'Done! Now you can run youtube-dl.\n') |
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