_ Git - youtube-dl/blob - youtube_dl/extractor/openload.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import json
   5 import os
   6 import subprocess
   7 import tempfile
   8
   9 from ..compat import (
  10     compat_urlparse,
  11     compat_kwargs,
  12 )
  13 from ..utils import (
  14     check_executable,
  15     encodeArgument,
  16     ExtractorError,
  17     get_exe_version,
  18     is_outdated_version,
  19     std_headers,
  20 )
  21
  22
  23 def cookie_to_dict(cookie):
  24     cookie_dict = {
  25         'name': cookie.name,
  26         'value': cookie.value,
  27     }
  28     if cookie.port_specified:
  29         cookie_dict['port'] = cookie.port
  30     if cookie.domain_specified:
  31         cookie_dict['domain'] = cookie.domain
  32     if cookie.path_specified:
  33         cookie_dict['path'] = cookie.path
  34     if cookie.expires is not None:
  35         cookie_dict['expires'] = cookie.expires
  36     if cookie.secure is not None:
  37         cookie_dict['secure'] = cookie.secure
  38     if cookie.discard is not None:
  39         cookie_dict['discard'] = cookie.discard
  40     try:
  41         if (cookie.has_nonstandard_attr('httpOnly')
  42                 or cookie.has_nonstandard_attr('httponly')
  43                 or cookie.has_nonstandard_attr('HttpOnly')):
  44             cookie_dict['httponly'] = True
  45     except TypeError:
  46         pass
  47     return cookie_dict
  48
  49
  50 def cookie_jar_to_list(cookie_jar):
  51     return [cookie_to_dict(cookie) for cookie in cookie_jar]
  52
  53
  54 class PhantomJSwrapper(object):
  55     """PhantomJS wrapper class
  56
  57     This class is experimental.
  58     """
  59
  60     _TEMPLATE = r'''
  61         phantom.onError = function(msg, trace) {{
  62           var msgStack = ['PHANTOM ERROR: ' + msg];
  63           if(trace && trace.length) {{
  64             msgStack.push('TRACE:');
  65             trace.forEach(function(t) {{
  66               msgStack.push(' -> ' + (t.file || t.sourceURL) + ': ' + t.line
  67                 + (t.function ? ' (in function ' + t.function +')' : ''));
  68             }});
  69           }}
  70           console.error(msgStack.join('\n'));
  71           phantom.exit(1);
  72         }};
  73         var page = require('webpage').create();
  74         var fs = require('fs');
  75         var read = {{ mode: 'r', charset: 'utf-8' }};
  76         var write = {{ mode: 'w', charset: 'utf-8' }};
  77         JSON.parse(fs.read("{cookies}", read)).forEach(function(x) {{
  78           phantom.addCookie(x);
  79         }});
  80         page.settings.resourceTimeout = {timeout};
  81         page.settings.userAgent = "{ua}";
  82         page.onLoadStarted = function() {{
  83           page.evaluate(function() {{
  84             delete window._phantom;
  85             delete window.callPhantom;
  86           }});
  87         }};
  88         var saveAndExit = function() {{
  89           fs.write("{html}", page.content, write);
  90           fs.write("{cookies}", JSON.stringify(phantom.cookies), write);
  91           phantom.exit();
  92         }};
  93         page.onLoadFinished = function(status) {{
  94           if(page.url === "") {{
  95             page.setContent(fs.read("{html}", read), "{url}");
  96           }}
  97           else {{
  98             {jscode}
  99           }}
 100         }};
 101         page.open("");
 102     '''
 103
 104     _TMP_FILE_NAMES = ['script', 'html', 'cookies']
 105
 106     @staticmethod
 107     def _version():
 108         return get_exe_version('phantomjs', version_re=r'([0-9.]+)')
 109
 110     def __init__(self, extractor, required_version=None, timeout=10000):
 111         self._TMP_FILES = {}
 112
 113         self.exe = check_executable('phantomjs', ['-v'])
 114         if not self.exe:
 115             raise ExtractorError('PhantomJS executable not found in PATH, '
 116                                  'download it from http://phantomjs.org',
 117                                  expected=True)
 118
 119         self.extractor = extractor
 120
 121         if required_version:
 122             version = self._version()
 123             if is_outdated_version(version, required_version):
 124                 self.extractor._downloader.report_warning(
 125                     'Your copy of PhantomJS is outdated, update it to version '
 126                     '%s or newer if you encounter any errors.' % required_version)
 127
 128         self.options = {
 129             'timeout': timeout,
 130         }
 131         for name in self._TMP_FILE_NAMES:
 132             tmp = tempfile.NamedTemporaryFile(delete=False)
 133             tmp.close()
 134             self._TMP_FILES[name] = tmp
 135
 136     def __del__(self):
 137         for name in self._TMP_FILE_NAMES:
 138             try:
 139                 os.remove(self._TMP_FILES[name].name)
 140             except (IOError, OSError, KeyError):
 141                 pass
 142
 143     def _save_cookies(self, url):
 144         cookies = cookie_jar_to_list(self.extractor._downloader.cookiejar)
 145         for cookie in cookies:
 146             if 'path' not in cookie:
 147                 cookie['path'] = '/'
 148             if 'domain' not in cookie:
 149                 cookie['domain'] = compat_urlparse.urlparse(url).netloc
 150         with open(self._TMP_FILES['cookies'].name, 'wb') as f:
 151             f.write(json.dumps(cookies).encode('utf-8'))
 152
 153     def _load_cookies(self):
 154         with open(self._TMP_FILES['cookies'].name, 'rb') as f:
 155             cookies = json.loads(f.read().decode('utf-8'))
 156         for cookie in cookies:
 157             if cookie['httponly'] is True:
 158                 cookie['rest'] = {'httpOnly': None}
 159             if 'expiry' in cookie:
 160                 cookie['expire_time'] = cookie['expiry']
 161             self.extractor._set_cookie(**compat_kwargs(cookie))
 162
 163     def get(self, url, html=None, video_id=None, note=None, note2='Executing JS on webpage', headers={}, jscode='saveAndExit();'):
 164         """
 165         Downloads webpage (if needed) and executes JS
 166
 167         Params:
 168             url: website url
 169             html: optional, html code of website
 170             video_id: video id
 171             note: optional, displayed when downloading webpage
 172             note2: optional, displayed when executing JS
 173             headers: custom http headers
 174             jscode: code to be executed when page is loaded
 175
 176         Returns tuple with:
 177             * downloaded website (after JS execution)
 178             * anything you print with `console.log` (but not inside `page.execute`!)
 179
 180         In most cases you don't need to add any `jscode`.
 181         It is executed in `page.onLoadFinished`.
 182         `saveAndExit();` is mandatory, use it instead of `phantom.exit()`
 183         It is possible to wait for some element on the webpage, for example:
 184             var check = function() {
 185               var elementFound = page.evaluate(function() {
 186                 return document.querySelector('#b.done') !== null;
 187               });
 188               if(elementFound)
 189                 saveAndExit();
 190               else
 191                 window.setTimeout(check, 500);
 192             }
 193
 194             page.evaluate(function(){
 195               document.querySelector('#a').click();
 196             });
 197             check();
 198         """
 199         if 'saveAndExit();' not in jscode:
 200             raise ExtractorError('`saveAndExit();` not found in `jscode`')
 201         if not html:
 202             html = self.extractor._download_webpage(url, video_id, note=note, headers=headers)
 203         with open(self._TMP_FILES['html'].name, 'wb') as f:
 204             f.write(html.encode('utf-8'))
 205
 206         self._save_cookies(url)
 207
 208         replaces = self.options
 209         replaces['url'] = url
 210         user_agent = headers.get('User-Agent') or std_headers['User-Agent']
 211         replaces['ua'] = user_agent.replace('"', '\\"')
 212         replaces['jscode'] = jscode
 213
 214         for x in self._TMP_FILE_NAMES:
 215             replaces[x] = self._TMP_FILES[x].name.replace('\\', '\\\\').replace('"', '\\"')
 216
 217         with open(self._TMP_FILES['script'].name, 'wb') as f:
 218             f.write(self._TEMPLATE.format(**replaces).encode('utf-8'))
 219
 220         if video_id is None:
 221             self.extractor.to_screen('%s' % (note2,))
 222         else:
 223             self.extractor.to_screen('%s: %s' % (video_id, note2))
 224
 225         p = subprocess.Popen([
 226             self.exe, '--ssl-protocol=any',
 227             self._TMP_FILES['script'].name
 228         ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
 229         out, err = p.communicate()
 230         if p.returncode != 0:
 231             raise ExtractorError(
 232                 'Executing JS failed\n:' + encodeArgument(err))
 233         with open(self._TMP_FILES['html'].name, 'rb') as f:
 234             html = f.read().decode('utf-8')
 235
 236         self._load_cookies()
 237
 238         return (html, encodeArgument(out))