from __future__ import unicode_literals import os.path import re import subprocess import sys import time try: from Crypto.Cipher import AES can_decrypt_frag = True except ImportError: can_decrypt_frag = False from .common import FileDownloader from ..compat import ( compat_setenv, compat_str, ) from ..postprocessor.ffmpeg import FFmpegPostProcessor, EXT_TO_OUT_FORMATS from ..utils import ( cli_option, cli_valueless_option, cli_bool_option, cli_configuration_args, encodeFilename, error_to_compat_str, encodeArgument, handle_youtubedl_headers, check_executable, is_outdated_version, process_communicate_or_kill, sanitized_Request, sanitize_open, ) class ExternalFD(FileDownloader): SUPPORTED_PROTOCOLS = ('http', 'https', 'ftp', 'ftps') def real_download(self, filename, info_dict): self.report_destination(filename) tmpfilename = self.temp_name(filename) try: started = time.time() retval = self._call_downloader(tmpfilename, info_dict) except KeyboardInterrupt: if not info_dict.get('is_live'): raise # Live stream downloading cancellation should be considered as # correct and expected termination thus all postprocessing # should take place retval = 0 self.to_screen('[%s] Interrupted by user' % self.get_basename()) if retval == 0: status = { 'filename': filename, 'status': 'finished', 'elapsed': time.time() - started, } if filename != '-': fsize = os.path.getsize(encodeFilename(tmpfilename)) self.to_screen('\r[%s] Downloaded %s bytes' % (self.get_basename(), fsize)) self.try_rename(tmpfilename, filename) status.update({ 'downloaded_bytes': fsize, 'total_bytes': fsize, }) self._hook_progress(status) return True else: self.to_stderr('\n') self.report_error('%s exited with code %d' % ( self.get_basename(), retval)) return False @classmethod def get_basename(cls): return cls.__name__[:-2].lower() @property def exe(self): return self.params.get('external_downloader') @classmethod def available(cls, path=None): return check_executable(path or cls.get_basename(), [cls.AVAILABLE_OPT]) @classmethod def supports(cls, info_dict): return info_dict['protocol'] in cls.SUPPORTED_PROTOCOLS @classmethod def can_download(cls, info_dict, path=None): return cls.available(path) and cls.supports(info_dict) def _option(self, command_option, param): return cli_option(self.params, command_option, param) def _bool_option(self, command_option, param, true_value='true', false_value='false', separator=None): return cli_bool_option(self.params, command_option, param, true_value, false_value, separator) def _valueless_option(self, command_option, param, expected_value=True): return cli_valueless_option(self.params, command_option, param, expected_value) def _configuration_args(self, *args, **kwargs): return cli_configuration_args( self.params.get('external_downloader_args'), self.get_basename(), *args, **kwargs) def _call_downloader(self, tmpfilename, info_dict): """ Either overwrite this or implement _make_cmd """ cmd = [encodeArgument(a) for a in self._make_cmd(tmpfilename, info_dict)] self._debug_cmd(cmd) p = subprocess.Popen( cmd, stderr=subprocess.PIPE) _, stderr = process_communicate_or_kill(p) if p.returncode != 0: self.to_stderr(stderr.decode('utf-8', 'replace')) if 'fragments' in info_dict: file_list = [] dest, _ = sanitize_open(tmpfilename, 'wb') for i, fragment in enumerate(info_dict['fragments']): file = '%s-Frag%d' % (tmpfilename, i) decrypt_info = fragment.get('decrypt_info') src, _ = sanitize_open(file, 'rb') if decrypt_info: if decrypt_info['METHOD'] == 'AES-128': iv = decrypt_info.get('IV') decrypt_info['KEY'] = decrypt_info.get('KEY') or self.ydl.urlopen( self._prepare_url(info_dict, info_dict.get('_decryption_key_url') or decrypt_info['URI'])).read() encrypted_data = src.read() decrypted_data = AES.new( decrypt_info['KEY'], AES.MODE_CBC, iv).decrypt(encrypted_data) dest.write(decrypted_data) else: fragment_data = src.read() dest.write(fragment_data) else: fragment_data = src.read() dest.write(fragment_data) src.close() file_list.append(file) dest.close() if not self.params.get('keep_fragments', False): for file_path in file_list: try: os.remove(file_path) except OSError as ose: self.report_error("Unable to delete file %s; %s" % (file_path, error_to_compat_str(ose))) try: file_path = '%s.frag.urls' % tmpfilename os.remove(file_path) except OSError as ose: self.report_error("Unable to delete file %s; %s" % (file_path, error_to_compat_str(ose))) return p.returncode def _prepare_url(self, info_dict, url): headers = info_dict.get('http_headers') return sanitized_Request(url, None, headers) if headers else url class CurlFD(ExternalFD): AVAILABLE_OPT = '-V' def _make_cmd(self, tmpfilename, info_dict): cmd = [self.exe, '--location', '-o', tmpfilename] if info_dict.get('http_headers') is not None: for key, val in info_dict['http_headers'].items(): cmd += ['--header', '%s: %s' % (key, val)] cmd += self._bool_option('--continue-at', 'continuedl', '-', '0') cmd += self._valueless_option('--silent', 'noprogress') cmd += self._valueless_option('--verbose', 'verbose') cmd += self._option('--limit-rate', 'ratelimit') retry = self._option('--retry', 'retries') if len(retry) == 2: if retry[1] in ('inf', 'infinite'): retry[1] = '2147483647' cmd += retry cmd += self._option('--max-filesize', 'max_filesize') cmd += self._option('--interface', 'source_address') cmd += self._option('--proxy', 'proxy') cmd += self._valueless_option('--insecure', 'nocheckcertificate') cmd += self._configuration_args() cmd += ['--', info_dict['url']] return cmd def _call_downloader(self, tmpfilename, info_dict): cmd = [encodeArgument(a) for a in self._make_cmd(tmpfilename, info_dict)] self._debug_cmd(cmd) # curl writes the progress to stderr so don't capture it. p = subprocess.Popen(cmd) process_communicate_or_kill(p) return p.returncode class AxelFD(ExternalFD): AVAILABLE_OPT = '-V' def _make_cmd(self, tmpfilename, info_dict): cmd = [self.exe, '-o', tmpfilename] if info_dict.get('http_headers') is not None: for key, val in info_dict['http_headers'].items(): cmd += ['-H', '%s: %s' % (key, val)] cmd += self._configuration_args() cmd += ['--', info_dict['url']] return cmd class WgetFD(ExternalFD): AVAILABLE_OPT = '--version' def _make_cmd(self, tmpfilename, info_dict): cmd = [self.exe, '-O', tmpfilename, '-nv', '--no-cookies'] if info_dict.get('http_headers') is not None: for key, val in info_dict['http_headers'].items(): cmd += ['--header', '%s: %s' % (key, val)] cmd += self._option('--limit-rate', 'ratelimit') retry = self._option('--tries', 'retries') if len(retry) == 2: if retry[1] in ('inf', 'infinite'): retry[1] = '0' cmd += retry cmd += self._option('--bind-address', 'source_address') cmd += self._option('--proxy', 'proxy') cmd += self._valueless_option('--no-check-certificate', 'nocheckcertificate') cmd += self._configuration_args() cmd += ['--', info_dict['url']] return cmd class Aria2cFD(ExternalFD): AVAILABLE_OPT = '-v' SUPPORTED_PROTOCOLS = ('http', 'https', 'ftp', 'ftps', 'frag_urls') @staticmethod def supports_manifest(manifest): UNSUPPORTED_FEATURES = [ r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [1] # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.2 ] check_results = (not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES) return all(check_results) def _make_cmd(self, tmpfilename, info_dict): cmd = [self.exe, '-c'] dn = os.path.dirname(tmpfilename) if 'fragments' not in info_dict: cmd += ['--out', os.path.basename(tmpfilename)] verbose_level_args = ['--console-log-level=warn', '--summary-interval=0'] cmd += self._configuration_args(['--file-allocation=none', '-x16', '-j16', '-s16'] + verbose_level_args) if dn: cmd += ['--dir', dn] if info_dict.get('http_headers') is not None: for key, val in info_dict['http_headers'].items(): cmd += ['--header', '%s: %s' % (key, val)] cmd += self._option('--interface', 'source_address') cmd += self._option('--all-proxy', 'proxy') cmd += self._bool_option('--check-certificate', 'nocheckcertificate', 'false', 'true', '=') cmd += self._bool_option('--remote-time', 'updatetime', 'true', 'false', '=') cmd += ['--auto-file-renaming=false'] if 'fragments' in info_dict: cmd += verbose_level_args cmd += ['--uri-selector', 'inorder', '--download-result=hide'] url_list_file = '%s.frag.urls' % tmpfilename url_list = [] for i, fragment in enumerate(info_dict['fragments']): tmpsegmentname = '%s-Frag%d' % (os.path.basename(tmpfilename), i) url_list.append('%s\n\tout=%s' % (fragment['url'], tmpsegmentname)) stream, _ = sanitize_open(url_list_file, 'wb') stream.write('\n'.join(url_list).encode('utf-8')) stream.close() cmd += ['-i', url_list_file] else: cmd += ['--', info_dict['url']] return cmd class HttpieFD(ExternalFD): @classmethod def available(cls, path=None): return check_executable(path or 'http', ['--version']) def _make_cmd(self, tmpfilename, info_dict): cmd = ['http', '--download', '--output', tmpfilename, info_dict['url']] if info_dict.get('http_headers') is not None: for key, val in info_dict['http_headers'].items(): cmd += ['%s:%s' % (key, val)] return cmd class FFmpegFD(ExternalFD): SUPPORTED_PROTOCOLS = ('http', 'https', 'ftp', 'ftps', 'm3u8', 'rtsp', 'rtmp', 'mms') @classmethod def available(cls, path=None): # path is ignored for ffmpeg return FFmpegPostProcessor().available def _call_downloader(self, tmpfilename, info_dict): url = info_dict['url'] ffpp = FFmpegPostProcessor(downloader=self) if not ffpp.available: self.report_error('m3u8 download detected but ffmpeg could not be found. Please install') return False ffpp.check_version() args = [ffpp.executable, '-y'] for log_level in ('quiet', 'verbose'): if self.params.get(log_level, False): args += ['-loglevel', log_level] break seekable = info_dict.get('_seekable') if seekable is not None: # setting -seekable prevents ffmpeg from guessing if the server # supports seeking(by adding the header `Range: bytes=0-`), which # can cause problems in some cases # https://github.com/ytdl-org/youtube-dl/issues/11800#issuecomment-275037127 # http://trac.ffmpeg.org/ticket/6125#comment:10 args += ['-seekable', '1' if seekable else '0'] args += self._configuration_args() # start_time = info_dict.get('start_time') or 0 # if start_time: # args += ['-ss', compat_str(start_time)] # end_time = info_dict.get('end_time') # if end_time: # args += ['-t', compat_str(end_time - start_time)] if info_dict.get('http_headers') is not None and re.match(r'^https?://', url): # Trailing \r\n after each HTTP header is important to prevent warning from ffmpeg/avconv: # [http @ 00000000003d2fa0] No trailing CRLF found in HTTP header. headers = handle_youtubedl_headers(info_dict['http_headers']) args += [ '-headers', ''.join('%s: %s\r\n' % (key, val) for key, val in headers.items())] env = None proxy = self.params.get('proxy') if proxy: if not re.match(r'^[\da-zA-Z]+://', proxy): proxy = 'http://%s' % proxy if proxy.startswith('socks'): self.report_warning( '%s does not support SOCKS proxies. Downloading is likely to fail. ' 'Consider adding --hls-prefer-native to your command.' % self.get_basename()) # Since December 2015 ffmpeg supports -http_proxy option (see # http://git.videolan.org/?p=ffmpeg.git;a=commit;h=b4eb1f29ebddd60c41a2eb39f5af701e38e0d3fd) # We could switch to the following code if we are able to detect version properly # args += ['-http_proxy', proxy] env = os.environ.copy() compat_setenv('HTTP_PROXY', proxy, env=env) compat_setenv('http_proxy', proxy, env=env) protocol = info_dict.get('protocol') if protocol == 'rtmp': player_url = info_dict.get('player_url') page_url = info_dict.get('page_url') app = info_dict.get('app') play_path = info_dict.get('play_path') tc_url = info_dict.get('tc_url') flash_version = info_dict.get('flash_version') live = info_dict.get('rtmp_live', False) conn = info_dict.get('rtmp_conn') if player_url is not None: args += ['-rtmp_swfverify', player_url] if page_url is not None: args += ['-rtmp_pageurl', page_url] if app is not None: args += ['-rtmp_app', app] if play_path is not None: args += ['-rtmp_playpath', play_path] if tc_url is not None: args += ['-rtmp_tcurl', tc_url] if flash_version is not None: args += ['-rtmp_flashver', flash_version] if live: args += ['-rtmp_live', 'live'] if isinstance(conn, list): for entry in conn: args += ['-rtmp_conn', entry] elif isinstance(conn, compat_str): args += ['-rtmp_conn', conn] args += ['-i', url, '-c', 'copy'] if self.params.get('test', False): args += ['-fs', compat_str(self._TEST_FILE_SIZE)] if protocol in ('m3u8', 'm3u8_native'): use_mpegts = (tmpfilename == '-') or self.params.get('hls_use_mpegts') if use_mpegts is None: use_mpegts = info_dict.get('is_live') if use_mpegts: args += ['-f', 'mpegts'] else: args += ['-f', 'mp4'] if (ffpp.basename == 'ffmpeg' and is_outdated_version(ffpp._versions['ffmpeg'], '3.2', False)) and (not info_dict.get('acodec') or info_dict['acodec'].split('.')[0] in ('aac', 'mp4a')): args += ['-bsf:a', 'aac_adtstoasc'] elif protocol == 'rtmp': args += ['-f', 'flv'] else: args += ['-f', EXT_TO_OUT_FORMATS.get(info_dict['ext'], info_dict['ext'])] args = [encodeArgument(opt) for opt in args] args.append(encodeFilename(ffpp._ffmpeg_filename_argument(tmpfilename), True)) self._debug_cmd(args) proc = subprocess.Popen(args, stdin=subprocess.PIPE, env=env) try: retval = proc.wait() except BaseException as e: # subprocces.run would send the SIGKILL signal to ffmpeg and the # mp4 file couldn't be played, but if we ask ffmpeg to quit it # produces a file that is playable (this is mostly useful for live # streams). Note that Windows is not affected and produces playable # files (see https://github.com/ytdl-org/youtube-dl/issues/8300). if isinstance(e, KeyboardInterrupt) and sys.platform != 'win32': process_communicate_or_kill(proc, b'q') else: proc.kill() proc.wait() raise return retval class AVconvFD(FFmpegFD): pass _BY_NAME = dict( (klass.get_basename(), klass) for name, klass in globals().items() if name.endswith('FD') and name != 'ExternalFD' ) def list_external_downloaders(): return sorted(_BY_NAME.keys()) def get_external_downloader(external_downloader): """ Given the name of the executable, see whether we support the given downloader . """ # Drop .exe extension on Windows bn = os.path.splitext(os.path.basename(external_downloader))[0] return _BY_NAME[bn]