Move Facebook into its own file

2013-06-23 20:59:45 +02:00
parent aad0d6d5ba
commit 9eae41ddef
2 changed files with 111 additions and 94 deletions
--- a/youtube_dl/extractor/facebook.py
+++ b/youtube_dl/extractor/facebook.py
@@ -0,0 +1,111 @@
+import json
+import netrc
+import re
+import socket
+
+from .common import InfoExtractor
+from ..utils import (
+    compat_http_client,
+    compat_str,
+    compat_urllib_error,
+    compat_urllib_parse,
+    compat_urllib_request,
+
+    ExtractorError,
+)
+
+
+class FacebookIE(InfoExtractor):
+    """Information Extractor for Facebook"""
+
+    _VALID_URL = r'^(?:https?://)?(?:\w+\.)?facebook\.com/(?:video/video|photo)\.php\?(?:.*?)v=(?P<ID>\d+)(?:.*)'
+    _LOGIN_URL = 'https://login.facebook.com/login.php?m&next=http%3A%2F%2Fm.facebook.com%2Fhome.php&'
+    _NETRC_MACHINE = 'facebook'
+    IE_NAME = u'facebook'
+
+    def report_login(self):
+        """Report attempt to log in."""
+        self.to_screen(u'Logging in')
+
+    def _real_initialize(self):
+        if self._downloader is None:
+            return
+
+        useremail = None
+        password = None
+        downloader_params = self._downloader.params
+
+        # Attempt to use provided username and password or .netrc data
+        if downloader_params.get('username', None) is not None:
+            useremail = downloader_params['username']
+            password = downloader_params['password']
+        elif downloader_params.get('usenetrc', False):
+            try:
+                info = netrc.netrc().authenticators(self._NETRC_MACHINE)
+                if info is not None:
+                    useremail = info[0]
+                    password = info[2]
+                else:
+                    raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE)
+            except (IOError, netrc.NetrcParseError) as err:
+                self._downloader.report_warning(u'parsing .netrc: %s' % compat_str(err))
+                return
+
+        if useremail is None:
+            return
+
+        # Log in
+        login_form = {
+            'email': useremail,
+            'pass': password,
+            'login': 'Log+In'
+            }
+        request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(login_form))
+        try:
+            self.report_login()
+            login_results = compat_urllib_request.urlopen(request).read()
+            if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
+                self._downloader.report_warning(u'unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
+                return
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
+            return
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        if mobj is None:
+            raise ExtractorError(u'Invalid URL: %s' % url)
+        video_id = mobj.group('ID')
+
+        url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
+        webpage = self._download_webpage(url, video_id)
+
+        BEFORE = '{swf.addParam(param[0], param[1]);});\n'
+        AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
+        m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
+        if not m:
+            raise ExtractorError(u'Cannot parse data')
+        data = dict(json.loads(m.group(1)))
+        params_raw = compat_urllib_parse.unquote(data['params'])
+        params = json.loads(params_raw)
+        video_data = params['video_data'][0]
+        video_url = video_data.get('hd_src')
+        if not video_url:
+            video_url = video_data['sd_src']
+        if not video_url:
+            raise ExtractorError(u'Cannot find video URL')
+        video_duration = int(video_data['video_duration'])
+        thumbnail = video_data['thumbnail_src']
+
+        video_title = self._html_search_regex('<h2 class="uiHeaderTitle">([^<]+)</h2>',
+            webpage, u'title')
+
+        info = {
+            'id': video_id,
+            'title': video_title,
+            'url': video_url,
+            'ext': 'mp4',
+            'duration': video_duration,
+            'thumbnail': thumbnail,
+        }
+        return [info]