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put session_token retrieval code into a function

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This commit is contained in:
James Taylor 2018-12-30 23:56:00 -08:00
parent 913c258093
commit e98f693aaf
1 changed files with 15 additions and 11 deletions
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26
youtube/post_comment.py
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@ -92,7 +92,21 @@ def delete_comment(video_id, comment_id, author_id, session_token, cookiejar):
content = common.fetch_url("https://m.youtube.com/service_ajax?name=performCommentActionEndpoint", headers=headers, data=data, cookiejar_send=cookiejar)
xsrf_token_regex = re.compile(r'''XSRF_TOKEN"\s*:\s*"([\w-]*(?:=|%3D){0,2})"''')
def get_session_token(video_id, cookiejar):
''' Get session token for a video. This is required in order to post/edit/delete comments. This will modify cookiejar with cookies from youtube required for commenting'''
# youtube-dl uses disable_polymer=1 which uses a different request format which has an obfuscated javascript algorithm to generate a parameter called "bgr"
# Tokens retrieved from disable_polymer pages only work with that format. Tokens retrieved on mobile only work using mobile requests
# Additionally, tokens retrieved without sending the same cookie won't work. So this is necessary even if the bgr and stuff was reverse engineered.
headers = {'User-Agent': common.mobile_user_agent}
mobile_page = common.fetch_url('https://m.youtube.com/watch?v=' + video_id, headers, report_text="Retrieved session token for comment", cookiejar_send=cookiejar, cookiejar_receive=cookiejar).decode()
match = xsrf_token_regex.search(mobile_page)
if match:
return match.group(1).replace("%3D", "=")
else:
raise Exception("Couldn't find xsrf_token")
def post_comment(parameters, fields):
username = fields['username'][0]
cookiejar = accounts.account_cookiejar(username)
@ -103,17 +117,7 @@ def post_comment(parameters, fields):
except KeyError:
video_id = parameters['video_id'][0]
# Get session token for mobile
# youtube-dl uses disable_polymer=1 which uses a different request format which has an obfuscated javascript algorithm to generate a parameter called "bgr"
# Tokens retrieved from disable_polymer pages only work with that format. Tokens retrieved on mobile only work using mobile requests
# Additionally, tokens retrieved without sending the same cookie won't work. So this is necessary even if the bgr and stuff was reverse engineered.
headers = {'User-Agent': common.mobile_user_agent}
mobile_page = common.fetch_url('https://m.youtube.com/watch?v=' + video_id, headers, report_text="Retrieved session token for comment", cookiejar_send=cookiejar, cookiejar_receive=cookiejar).decode()
match = xsrf_token_regex.search(mobile_page)
if match:
token = match.group(1).replace("%3D", "=")
else:
raise Exception("Couldn't find xsrf_token")
token = get_session_token(video_id, cookiejar)
if 'parent_id' in parameters:
code = _post_comment_reply(fields['comment_text'][0], parameters['video_id'][0], parameters['parent_id'][0], token, cookiejar)