@ -0,0 +1,202 @@ | |||
__all__ = ['aes_encrypt', 'key_expansion', 'aes_ctr_decrypt', 'aes_decrypt_text'] | |||
import base64 | |||
from math import ceil | |||
from .utils import bytes_to_intlist, intlist_to_bytes | |||
BLOCK_SIZE_BYTES = 16 | |||
def aes_ctr_decrypt(data, key, counter): | |||
""" | |||
Decrypt with aes in counter mode | |||
@param {int[]} data cipher | |||
@param {int[]} key 16/24/32-Byte cipher key | |||
@param {instance} counter Instance whose next_value function (@returns {int[]} 16-Byte block) | |||
returns the next counter block | |||
@returns {int[]} decrypted data | |||
""" | |||
expanded_key = key_expansion(key) | |||
block_count = int(ceil(float(len(data)) / BLOCK_SIZE_BYTES)) | |||
decrypted_data=[] | |||
for i in range(block_count): | |||
counter_block = counter.next_value() | |||
block = data[i*BLOCK_SIZE_BYTES : (i+1)*BLOCK_SIZE_BYTES] | |||
block += [0]*(BLOCK_SIZE_BYTES - len(block)) | |||
cipher_counter_block = aes_encrypt(counter_block, expanded_key) | |||
decrypted_data += xor(block, cipher_counter_block) | |||
decrypted_data = decrypted_data[:len(data)] | |||
return decrypted_data | |||
def key_expansion(data): | |||
""" | |||
Generate key schedule | |||
@param {int[]} data 16/24/32-Byte cipher key | |||
@returns {int[]} 176/208/240-Byte expanded key | |||
""" | |||
data = data[:] # copy | |||
rcon_iteration = 1 | |||
key_size_bytes = len(data) | |||
expanded_key_size_bytes = (key_size_bytes // 4 + 7) * BLOCK_SIZE_BYTES | |||
while len(data) < expanded_key_size_bytes: | |||
temp = data[-4:] | |||
temp = key_schedule_core(temp, rcon_iteration) | |||
rcon_iteration += 1 | |||
data += xor(temp, data[-key_size_bytes : 4-key_size_bytes]) | |||
for _ in range(3): | |||
temp = data[-4:] | |||
data += xor(temp, data[-key_size_bytes : 4-key_size_bytes]) | |||
if key_size_bytes == 32: | |||
temp = data[-4:] | |||
temp = sub_bytes(temp) | |||
data += xor(temp, data[-key_size_bytes : 4-key_size_bytes]) | |||
for _ in range(3 if key_size_bytes == 32 else 2 if key_size_bytes == 24 else 0): | |||
temp = data[-4:] | |||
data += xor(temp, data[-key_size_bytes : 4-key_size_bytes]) | |||
data = data[:expanded_key_size_bytes] | |||
return data | |||
def aes_encrypt(data, expanded_key): | |||
""" | |||
Encrypt one block with aes | |||
@param {int[]} data 16-Byte state | |||
@param {int[]} expanded_key 176/208/240-Byte expanded key | |||
@returns {int[]} 16-Byte cipher | |||
""" | |||
rounds = len(expanded_key) // BLOCK_SIZE_BYTES - 1 | |||
data = xor(data, expanded_key[:BLOCK_SIZE_BYTES]) | |||
for i in range(1, rounds+1): | |||
data = sub_bytes(data) | |||
data = shift_rows(data) | |||
if i != rounds: | |||
data = mix_columns(data) | |||
data = xor(data, expanded_key[i*BLOCK_SIZE_BYTES : (i+1)*BLOCK_SIZE_BYTES]) | |||
return data | |||
def aes_decrypt_text(data, password, key_size_bytes): | |||
""" | |||
Decrypt text | |||
- The first 8 Bytes of decoded 'data' are the 8 high Bytes of the counter | |||
- The cipher key is retrieved by encrypting the first 16 Byte of 'password' | |||
with the first 'key_size_bytes' Bytes from 'password' (if necessary filled with 0's) | |||
- Mode of operation is 'counter' | |||
@param {str} data Base64 encoded string | |||
@param {str,unicode} password Password (will be encoded with utf-8) | |||
@param {int} key_size_bytes Possible values: 16 for 128-Bit, 24 for 192-Bit or 32 for 256-Bit | |||
@returns {str} Decrypted data | |||
""" | |||
NONCE_LENGTH_BYTES = 8 | |||
data = bytes_to_intlist(base64.b64decode(data)) | |||
password = bytes_to_intlist(password.encode('utf-8')) | |||
key = password[:key_size_bytes] + [0]*(key_size_bytes - len(password)) | |||
key = aes_encrypt(key[:BLOCK_SIZE_BYTES], key_expansion(key)) * (key_size_bytes // BLOCK_SIZE_BYTES) | |||
nonce = data[:NONCE_LENGTH_BYTES] | |||
cipher = data[NONCE_LENGTH_BYTES:] | |||
class Counter: | |||
__value = nonce + [0]*(BLOCK_SIZE_BYTES - NONCE_LENGTH_BYTES) | |||
def next_value(self): | |||
temp = self.__value | |||
self.__value = inc(self.__value) | |||
return temp | |||
decrypted_data = aes_ctr_decrypt(cipher, key, Counter()) | |||
plaintext = intlist_to_bytes(decrypted_data) | |||
return plaintext | |||
RCON = (0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36) | |||
SBOX = (0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5, 0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76, | |||
0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0, 0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0, | |||
0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC, 0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15, | |||
0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A, 0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75, | |||
0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0, 0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84, | |||
0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B, 0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF, | |||
0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85, 0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8, | |||
0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5, 0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2, | |||
0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17, 0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73, | |||
0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88, 0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB, | |||
0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C, 0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79, | |||
0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9, 0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08, | |||
0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6, 0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A, | |||
0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E, 0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E, | |||
0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94, 0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF, | |||
0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68, 0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16) | |||
MIX_COLUMN_MATRIX = ((2,3,1,1), | |||
(1,2,3,1), | |||
(1,1,2,3), | |||
(3,1,1,2)) | |||
def sub_bytes(data): | |||
return [SBOX[x] for x in data] | |||
def rotate(data): | |||
return data[1:] + [data[0]] | |||
def key_schedule_core(data, rcon_iteration): | |||
data = rotate(data) | |||
data = sub_bytes(data) | |||
data[0] = data[0] ^ RCON[rcon_iteration] | |||
return data | |||
def xor(data1, data2): | |||
return [x^y for x, y in zip(data1, data2)] | |||
def mix_column(data): | |||
data_mixed = [] | |||
for row in range(4): | |||
mixed = 0 | |||
for column in range(4): | |||
addend = data[column] | |||
if MIX_COLUMN_MATRIX[row][column] in (2,3): | |||
addend <<= 1 | |||
if addend > 0xff: | |||
addend &= 0xff | |||
addend ^= 0x1b | |||
if MIX_COLUMN_MATRIX[row][column] == 3: | |||
addend ^= data[column] | |||
mixed ^= addend & 0xff | |||
data_mixed.append(mixed) | |||
return data_mixed | |||
def mix_columns(data): | |||
data_mixed = [] | |||
for i in range(4): | |||
column = data[i*4 : (i+1)*4] | |||
data_mixed += mix_column(column) | |||
return data_mixed | |||
def shift_rows(data): | |||
data_shifted = [] | |||
for column in range(4): | |||
for row in range(4): | |||
data_shifted.append( data[((column + row) & 0b11) * 4 + row] ) | |||
return data_shifted | |||
def inc(data): | |||
data = data[:] # copy | |||
for i in range(len(data)-1,-1,-1): | |||
if data[i] == 255: | |||
data[i] = 0 | |||
else: | |||
data[i] = data[i] + 1 | |||
break | |||
return data |
@ -0,0 +1,74 @@ | |||
import re | |||
import json | |||
from .common import InfoExtractor | |||
from ..utils import ( | |||
clean_html, | |||
get_element_by_id, | |||
) | |||
class TechTVMITIE(InfoExtractor): | |||
IE_NAME = u'techtv.mit.edu' | |||
_VALID_URL = r'https?://techtv\.mit\.edu/(videos|embeds)/(?P<id>\d+)' | |||
_TEST = { | |||
u'url': u'http://techtv.mit.edu/videos/25418-mit-dna-learning-center-set', | |||
u'file': u'25418.mp4', | |||
u'md5': u'1f8cb3e170d41fd74add04d3c9330e5f', | |||
u'info_dict': { | |||
u'title': u'MIT DNA Learning Center Set', | |||
u'description': u'md5:82313335e8a8a3f243351ba55bc1b474', | |||
}, | |||
} | |||
def _real_extract(self, url): | |||
mobj = re.match(self._VALID_URL, url) | |||
video_id = mobj.group('id') | |||
raw_page = self._download_webpage( | |||
'http://techtv.mit.edu/videos/%s' % video_id, video_id) | |||
clean_page = re.compile(u'<!--.*?-->', re.S).sub(u'', raw_page) | |||
base_url = self._search_regex(r'ipadUrl: \'(.+?cloudfront.net/)', | |||
raw_page, u'base url') | |||
formats_json = self._search_regex(r'bitrates: (\[.+?\])', raw_page, | |||
u'video formats') | |||
formats = json.loads(formats_json) | |||
formats = sorted(formats, key=lambda f: f['bitrate']) | |||
title = get_element_by_id('edit-title', clean_page) | |||
description = clean_html(get_element_by_id('edit-description', clean_page)) | |||
thumbnail = self._search_regex(r'playlist:.*?url: \'(.+?)\'', | |||
raw_page, u'thumbnail', flags=re.DOTALL) | |||
return {'id': video_id, | |||
'title': title, | |||
'url': base_url + formats[-1]['url'].replace('mp4:', ''), | |||
'ext': 'mp4', | |||
'description': description, | |||
'thumbnail': thumbnail, | |||
} | |||
class MITIE(TechTVMITIE): | |||
IE_NAME = u'video.mit.edu' | |||
_VALID_URL = r'https?://video\.mit\.edu/watch/(?P<title>[^/]+)' | |||
_TEST = { | |||
u'url': u'http://video.mit.edu/watch/the-government-is-profiling-you-13222/', | |||
u'file': u'21783.mp4', | |||
u'md5': u'7db01d5ccc1895fc5010e9c9e13648da', | |||
u'info_dict': { | |||
u'title': u'The Government is Profiling You', | |||
u'description': u'md5:ad5795fe1e1623b73620dbfd47df9afd', | |||
}, | |||
} | |||
def _real_extract(self, url): | |||
mobj = re.match(self._VALID_URL, url) | |||
page_title = mobj.group('title') | |||
webpage = self._download_webpage(url, page_title) | |||
self.to_screen('%s: Extracting %s url' % (page_title, TechTVMITIE.IE_NAME)) | |||
embed_url = self._search_regex(r'<iframe .*?src="(.+?)"', webpage, | |||
u'embed url') | |||
return self.url_result(embed_url, ie='TechTVMIT') |
@ -0,0 +1,67 @@ | |||
# coding: utf-8 | |||
import re | |||
import xml.etree.ElementTree | |||
import json | |||
from .common import InfoExtractor | |||
from ..utils import ( | |||
compat_urlparse, | |||
ExtractorError, | |||
find_xpath_attr, | |||
) | |||
class ORFIE(InfoExtractor): | |||
_VALID_URL = r'https?://tvthek.orf.at/(programs/.+?/episodes|topics/.+?)/(?P<id>\d+)' | |||
_TEST = { | |||
u'url': u'http://tvthek.orf.at/programs/1171769-Wetter-ZIB/episodes/6557323-Wetter', | |||
u'file': u'6566957.flv', | |||
u'info_dict': { | |||
u'title': u'Wetter', | |||
u'description': u'Christa Kummer, Marcus Wadsak und Kollegen präsentieren abwechselnd ihre täglichen Wetterprognosen für Österreich.\r \r Mehr Wetter unter wetter.ORF.at', | |||
}, | |||
u'params': { | |||
# It uses rtmp | |||
u'skip_download': True, | |||
} | |||
} | |||
def _real_extract(self, url): | |||
mobj = re.match(self._VALID_URL, url) | |||
playlist_id = mobj.group('id') | |||
webpage = self._download_webpage(url, playlist_id) | |||
flash_xml = self._search_regex('ORF.flashXML = \'(.+?)\'', webpage, u'flash xml') | |||
flash_xml = compat_urlparse.parse_qs('xml='+flash_xml)['xml'][0] | |||
flash_config = xml.etree.ElementTree.fromstring(flash_xml.encode('utf-8')) | |||
playlist_json = self._search_regex(r'playlist\': \'(\[.*?\])\'', webpage, u'playlist').replace(r'\"','"') | |||
playlist = json.loads(playlist_json) | |||
videos = [] | |||
ns = '{http://tempuri.org/XMLSchema.xsd}' | |||
xpath = '%(ns)sPlaylist/%(ns)sItems/%(ns)sItem' % {'ns': ns} | |||
webpage_description = self._og_search_description(webpage) | |||
for (i, (item, info)) in enumerate(zip(flash_config.findall(xpath), playlist), 1): | |||
# Get best quality url | |||
rtmp_url = None | |||
for q in ['Q6A', 'Q4A', 'Q1A']: | |||
video_url = find_xpath_attr(item, '%sVideoUrl' % ns, 'quality', q) | |||
if video_url is not None: | |||
rtmp_url = video_url.text | |||
break | |||
if rtmp_url is None: | |||
raise ExtractorError(u'Couldn\'t get video url: %s' % info['id']) | |||
description = self._html_search_regex( | |||
r'id="playlist_entry_%s".*?<p>(.*?)</p>' % i, webpage, | |||
u'description', default=webpage_description, flags=re.DOTALL) | |||
videos.append({ | |||
'_type': 'video', | |||
'id': info['id'], | |||
'title': info['title'], | |||
'url': rtmp_url, | |||
'ext': 'flv', | |||
'description': description, | |||
}) | |||
return videos |
@ -0,0 +1,90 @@ | |||
# encoding: utf-8 | |||
import json | |||
import re | |||
from .common import InfoExtractor | |||
from ..utils import ExtractorError | |||
class SohuIE(InfoExtractor): | |||
_VALID_URL = r'https?://tv\.sohu\.com/\d+?/n(?P<id>\d+)\.shtml.*?' | |||
_TEST = { | |||
u'url': u'http://tv.sohu.com/20130724/n382479172.shtml#super', | |||
u'file': u'382479172.mp4', | |||
u'md5': u'bde8d9a6ffd82c63a1eefaef4eeefec7', | |||
u'info_dict': { | |||
u'title': u'MV:Far East Movement《The Illest》', | |||
}, | |||
} | |||
def _real_extract(self, url): | |||
def _fetch_data(vid_id): | |||
base_data_url = u'http://hot.vrs.sohu.com/vrs_flash.action?vid=' | |||
data_url = base_data_url + str(vid_id) | |||
data_json = self._download_webpage( | |||
data_url, video_id, | |||
note=u'Downloading JSON data for ' + str(vid_id)) | |||
return json.loads(data_json) | |||
mobj = re.match(self._VALID_URL, url) | |||
video_id = mobj.group('id') | |||
webpage = self._download_webpage(url, video_id) | |||
raw_title = self._html_search_regex(r'(?s)<title>(.+?)</title>', | |||
webpage, u'video title') | |||
title = raw_title.partition('-')[0].strip() | |||
vid = self._html_search_regex(r'var vid="(\d+)"', webpage, | |||
u'video path') | |||
data = _fetch_data(vid) | |||
QUALITIES = ('ori', 'super', 'high', 'nor') | |||
vid_ids = [data['data'][q + 'Vid'] | |||
for q in QUALITIES | |||
if data['data'][q + 'Vid'] != 0] | |||
if not vid_ids: | |||
raise ExtractorError(u'No formats available for this video') | |||
# For now, we just pick the highest available quality | |||
vid_id = vid_ids[-1] | |||
format_data = data if vid == vid_id else _fetch_data(vid_id) | |||
part_count = format_data['data']['totalBlocks'] | |||
allot = format_data['allot'] | |||
prot = format_data['prot'] | |||
clipsURL = format_data['data']['clipsURL'] | |||
su = format_data['data']['su'] | |||
playlist = [] | |||
for i in range(part_count): | |||
part_url = ('http://%s/?prot=%s&file=%s&new=%s' % | |||
(allot, prot, clipsURL[i], su[i])) | |||
part_str = self._download_webpage( | |||
part_url, video_id, | |||
note=u'Downloading part %d of %d' % (i+1, part_count)) | |||
part_info = part_str.split('|') | |||
video_url = '%s%s?key=%s' % (part_info[0], su[i], part_info[3]) | |||
video_info = { | |||
'id': '%s_part%02d' % (video_id, i + 1), | |||
'title': title, | |||
'url': video_url, | |||
'ext': 'mp4', | |||
} | |||
playlist.append(video_info) | |||
if len(playlist) == 1: | |||
info = playlist[0] | |||
info['id'] = video_id | |||
else: | |||
info = { | |||
'_type': 'playlist', | |||
'entries': playlist, | |||
'id': video_id, | |||
} | |||
return info |
@ -1,2 +1,2 @@ | |||
__version__ = '2013.08.28' | |||
__version__ = '2013.08.30' |