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Code Issues Releases Wiki Activity

[openload] separate PhantomJS code from extractor

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This commit is contained in:
Tithen-Firion 2017-04-25 01:06:14 +02:00
parent 47e0cef46e
commit da57ebaf84
2 changed files with 157 additions and 62 deletions
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78
youtube_dl/extractor/openload.py
View File

@ -1,17 +1,14 @@
# coding: utf-8
from __future__ import unicode_literals
import os
import re
import subprocess
import tempfile
from .common import InfoExtractor
from ..utils import (
check_executable,
determine_ext,
encodeArgument,
ExtractorError,
get_element_by_id,
PhantomJSwrapper,
)
@ -62,38 +59,7 @@ class OpenloadIE(InfoExtractor):
'only_matching': True,
}]
_PHANTOMJS_SCRIPT = r'''
phantom.onError = function(msg, trace) {
var msgStack = ['PHANTOM ERROR: ' + msg];
if(trace && trace.length) {
msgStack.push('TRACE:');
trace.forEach(function(t) {
msgStack.push(' -> ' + (t.file || t.sourceURL) + ': ' + t.line
+ (t.function ? ' (in function ' + t.function +')' : ''));
});
}
console.error(msgStack.join('\n'));
phantom.exit(1);
};
var page = require('webpage').create();
page.settings.resourceTimeout = 10000;
page.onInitialized = function() {
page.evaluate(function() {
delete window._phantom;
delete window.callPhantom;
});
};
page.open('https://openload.co/embed/%s/', function(status) {
var info = page.evaluate(function() {
return {
decoded_id: document.getElementById('streamurl').innerHTML,
title: document.querySelector('meta[name="og:title"],'
+ 'meta[name=description]').content
};
});
console.log(info.decoded_id + ' ' + info.title);
phantom.exit();
});'''
_USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36'
@staticmethod
def _extract_urls(webpage):
@ -102,40 +68,27 @@ class OpenloadIE(InfoExtractor):
webpage)
def _real_extract(self, url):
exe = check_executable('phantomjs', ['-v'])
if not exe:
raise ExtractorError('PhantomJS executable not found in PATH, '
'download it from http://phantomjs.org',
expected=True)
video_id = self._match_id(url)
url = 'https://openload.co/embed/%s/' % video_id
webpage = self._download_webpage(url, video_id)
headers = {
'User-Agent': self._USER_AGENT,
}
phantom = PhantomJSwrapper(self)
webpage, _ = phantom.get(url, video_id=video_id, headers=headers)
if 'File not found' in webpage or 'deleted by the owner' in webpage:
raise ExtractorError('File not found', expected=True, video_id=video_id)
script_file = tempfile.NamedTemporaryFile(mode='w', delete=False)
# write JS script to file and close it
with script_file:
script_file.write(self._PHANTOMJS_SCRIPT % video_id)
self.to_screen('%s: Decoding video ID with PhantomJS' % video_id)
p = subprocess.Popen([exe, '--ssl-protocol=any', script_file.name],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
output, err = p.communicate()
if p.returncode != 0:
raise ExtractorError('Decoding failed\n:'
+ encodeArgument(err))
else:
decoded_id, title = encodeArgument(output).strip().split(' ', 1)
os.remove(script_file.name)
decoded_id = get_element_by_id('streamurl', webpage)
video_url = 'https://openload.co/stream/%s?mime=true' % decoded_id
title = self._og_search_title(webpage, default=None) or self._search_regex(
r'<span[^>]+class=["\']title["\'][^>]*>([^<]+)', webpage,
'title', default=None) or self._html_search_meta(
'description', webpage, 'title', fatal=True)
entries = self._parse_html5_media_entries(url, webpage, video_id)
entry = entries[0] if entries else {}
subtitles = entry.get('subtitles')
@ -148,5 +101,6 @@ class OpenloadIE(InfoExtractor):
# Seems all videos have extensions in their titles
'ext': determine_ext(title, 'mp4'),
'subtitles': subtitles,
'http_headers': headers,
}
return info_dict

141
youtube_dl/utils.py
View File

@ -3652,3 +3652,144 @@ def write_xattr(path, key, value):
"Couldn't find a tool to set the xattrs. "
"Install either the python 'xattr' module, "
"or the 'xattr' binary.")
class PhantomJSwrapper(object):
"""PhantomJS wrapper class"""
_TEMPLATE = r'''
phantom.onError = function(msg, trace) {{
var msgStack = ['PHANTOM ERROR: ' + msg];
if(trace && trace.length) {{
msgStack.push('TRACE:');
trace.forEach(function(t) {{
msgStack.push(' -> ' + (t.file || t.sourceURL) + ': ' + t.line
+ (t.function ? ' (in function ' + t.function +')' : ''));
}});
}}
console.error(msgStack.join('\n'));
phantom.exit(1);
}};
var page = require('webpage').create();
var fs = require('fs');
var read = {{ mode: 'r', charset: 'utf-8' }};
var write = {{ mode: 'w', charset: 'utf-8' }};
page.settings.resourceTimeout = {timeout};
page.settings.userAgent = "{ua}";
page.onLoadStarted = function() {{
page.evaluate(function() {{
delete window._phantom;
delete window.callPhantom;
}});
}};
var saveAndExit = function() {{
fs.write("{html}", page.content, write);
phantom.exit();
}};
page.onLoadFinished = function(status) {{
if(page.url === "") {{
page.setContent(fs.read("{html}", read), "{url}");
}}
else {{
{jscode}
}}
}};
page.open("");
'''
_TMP_FILE_NAMES = ['script', 'html']
def __init__(self, extractor, timeout=10000):
self.exe = check_executable('phantomjs', ['-v'])
if not self.exe:
raise ExtractorError('PhantomJS executable not found in PATH, '
'download it from http://phantomjs.org',
expected=True)
self.extractor = extractor
self.options = {
'timeout': timeout,
}
self._TMP_FILES = {}
for name in self._TMP_FILE_NAMES:
tmp = tempfile.NamedTemporaryFile(delete=False)
tmp.close()
self._TMP_FILES[name] = tmp
def __del__(self):
for name in self._TMP_FILE_NAMES:
try:
os.remove(self._TMP_FILES[name].name)
except:
pass
def get(self, url, html=None, video_id=None, note=None, note2='Executing JS on webpage', headers={}, jscode='saveAndExit();'):
"""
Downloads webpage (if needed) and executes JS
Params:
url: website url
html: optional, html code of website
video_id: video id
note: optional, displayed when downloading webpage
note2: optional, displayed when executing JS
headers: custom http headers
jscode: code to be executed when page is loaded
Returns tuple with:
* downloaded website (after JS execution)
* anything you print with `console.log` (but not inside `page.execute`!)
In most cases you don't need to add any `jscode`.
It is executed in `page.onLoadFinished`.
`saveAndExit();` is mandatory, use it instead of `phantom.exit()`
It is possible to wait for some element on the webpage, for example:
var check = function() {
var elementFound = page.evaluate(function() {
return document.querySelector('#b.done') !== null;
});
if(elementFound)
saveAndExit();
else
window.setTimeout(check, 500);
}
page.evaluate(function(){
document.querySelector('#a').click();
});
check();
"""
if 'saveAndExit();' not in jscode:
raise ExtractorError('`saveAndExit();` not found in `jscode`')
if not html:
html = self.extractor._download_webpage(url, video_id, note=note, headers=headers)
with open(self._TMP_FILES['html'].name, 'wb') as f:
f.write(html.encode('utf-8'))
replaces = self.options
replaces['url'] = url
user_agent = headers.get('User-Agent') or std_headers['User-Agent']
replaces['ua'] = user_agent.replace('"', '\\"')
replaces['jscode'] = jscode
for x in self._TMP_FILE_NAMES:
replaces[x] = self._TMP_FILES[x].name.replace('\\', '\\\\').replace('"', '\\"')
with open(self._TMP_FILES['script'].name, 'wb') as f:
f.write(self._TEMPLATE.format(**replaces).encode('utf-8'))
if video_id is None:
self.extractor.to_screen('%s' % (note2,))
else:
self.extractor.to_screen('%s: %s' % (video_id, note2))
p = subprocess.Popen([self.exe, '--ssl-protocol=any',
self._TMP_FILES['script'].name], stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = p.communicate()
if p.returncode != 0:
raise ExtractorError('Executing JS failed\n:'
+ encodeArgument(err))
with open(self._TMP_FILES['html'].name, 'rb') as f:
html = f.read().decode('utf-8')
return (html, encodeArgument(out))