Coverage for youtube_dl.update : 6%

import json 

import traceback 

import hashlib 

from zipimport import zipimporter 

from .utils import * 

from .version import __version__ 

def rsa_verify(message, signature, key): 

    from struct import pack 

    from hashlib import sha256 

    from sys import version_info 

    def b(x): 

        if version_info[0] == 2: return x 

        else: return x.encode('latin1') 

    assert(type(message) == type(b(''))) 

    block_size = 0 

    n = key[0] 

    while n: 

        block_size += 1 

        n >>= 8 

    signature = pow(int(signature, 16), key[1], key[0]) 

    raw_bytes = [] 

    while signature: 

        raw_bytes.insert(0, pack("B", signature & 0xFF)) 

        signature >>= 8 

    signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes) 

    if signature[0:2] != b('\x00\x01'): return False 

    signature = signature[2:] 

    if not b('\x00') in signature: return False 

    signature = signature[signature.index(b('\x00'))+1:] 

    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 

    signature = signature[19:] 

    if signature != sha256(message).digest(): return False 

    return True 

def update_self(to_screen, verbose, filename): 

    """Update the program file with the latest version from the repository""" 

    UPDATE_URL = "http://rg3.github.com/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(u'It looks like you installed youtube-dl with pip, setup.py or a tarball. Please use that to update.') 

        return 

    # Check if there is a new version 

    try: 

        newversion = compat_urllib_request.urlopen(VERSION_URL).read().decode('utf-8').strip() 

    except: 

        if verbose: to_screen(compat_str(traceback.format_exc())) 

        to_screen(u'ERROR: can\'t find the current version. Please try again later.') 

        return 

    if newversion == __version__: 

        to_screen(u'youtube-dl is up-to-date (' + __version__ + ')') 

        return 

    # Download and check versions info 

    try: 

        versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8') 

        versions_info = json.loads(versions_info) 

    except: 

        if verbose: to_screen(compat_str(traceback.format_exc())) 

        to_screen(u'ERROR: can\'t obtain versions info. Please try again later.') 

        return 

    if not 'signature' in versions_info: 

        to_screen(u'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(u'ERROR: the versions file signature is invalid. Aborting.') 

        return 

    to_screen(u'Updating to version ' + versions_info['latest'] + '...') 

    version = versions_info['versions'][versions_info['latest']] 

    if version.get('notes'): 

        to_screen(u'PLEASE NOTE:') 

        for note in version['notes']: 

            to_screen(note) 

    if not os.access(filename, os.W_OK): 

        to_screen(u'ERROR: no write permissions on %s' % filename) 

        return 

    # Py2EXE 

    if hasattr(sys, "frozen"): 

        exe = os.path.abspath(filename) 

        directory = os.path.dirname(exe) 

        if not os.access(directory, os.W_OK): 

            to_screen(u'ERROR: no write permissions on %s' % directory) 

            return 

        try: 

            urlh = compat_urllib_request.urlopen(version['exe'][0]) 

            newcontent = urlh.read() 

            urlh.close() 

        except (IOError, OSError) as err: 

            if verbose: to_screen(compat_str(traceback.format_exc())) 

            to_screen(u'ERROR: unable to download latest version') 

            return 

        newcontent_hash = hashlib.sha256(newcontent).hexdigest() 

        if newcontent_hash != version['exe'][1]: 

            to_screen(u'ERROR: the downloaded file hash does not match. Aborting.') 

            return 

        try: 

            with open(exe + '.new', 'wb') as outf: 

                outf.write(newcontent) 

        except (IOError, OSError) as err: 

            if verbose: to_screen(compat_str(traceback.format_exc())) 

            to_screen(u'ERROR: unable to write the new version') 

            return 

        try: 

            bat = os.path.join(directory, 'youtube-dl-updater.bat') 

            b = open(bat, 'w') 

            b.write(""" 

echo Updating youtube-dl... 

ping 127.0.0.1 -n 5 -w 1000 > NUL 

move /Y "%s.new" "%s" 

del "%s" 

            \n""" %(exe, exe, bat)) 

            b.close() 

            os.startfile(bat) 

        except (IOError, OSError) as err: 

            if verbose: to_screen(compat_str(traceback.format_exc())) 

            to_screen(u'ERROR: unable to overwrite current version') 

            return 

    # Zip unix package 

    elif isinstance(globals().get('__loader__'), zipimporter): 

        try: 

            urlh = compat_urllib_request.urlopen(version['bin'][0]) 

            newcontent = urlh.read() 

            urlh.close() 

        except (IOError, OSError) as err: 

            if verbose: to_screen(compat_str(traceback.format_exc())) 

            to_screen(u'ERROR: unable to download latest version') 

            return 

        newcontent_hash = hashlib.sha256(newcontent).hexdigest() 

        if newcontent_hash != version['bin'][1]: 

            to_screen(u'ERROR: the downloaded file hash does not match. Aborting.') 

            return 

        try: 

            with open(filename, 'wb') as outf: 

                outf.write(newcontent) 

        except (IOError, OSError) as err: 

            if verbose: to_screen(compat_str(traceback.format_exc())) 

            to_screen(u'ERROR: unable to overwrite current version') 

            return 

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