diff options
Diffstat (limited to 'youtube/comments.py')
| -rw-r--r-- | youtube/comments.py | 332 |
1 files changed, 166 insertions, 166 deletions
diff --git a/youtube/comments.py b/youtube/comments.py index 4b30a48..3f44758 100644 --- a/youtube/comments.py +++ b/youtube/comments.py @@ -1,166 +1,166 @@ -import json
-import youtube.proto as proto
-import base64
-from youtube.common import uppercase_escape, default_multi_get, format_text_runs, URL_ORIGIN, fetch_url
-from string import Template
-import urllib.request
-import urllib
-import html
-comment_template = Template('''
- <div class="comment-container">
- <div class="comment">
- <a class="author-avatar" href="$author_url" title="$author">
- <img class="author-avatar-img" src="$author_avatar">
- </a>
- <address>
- <a class="author" href="$author_url" title="$author">$author</a>
- </address>
- <span class="text">$text</span>
- <time datetime="$datetime">$published</time>
- <span class="likes">$likes</span>
-$replies
- </div>
-
- </div>
-''')
-reply_link_template = Template('''
- <a href="$url" class="replies">View replies</a>
-''')
-with open("yt_comments_template.html", "r") as file:
- yt_comments_template = Template(file.read())
-
-
-# <a class="replies-link" href="$replies_url">$replies_link_text</a>
-
-
-# Here's what I know about the secret key (starting with ASJN_i)
-# *The secret key definitely contains the following information (or perhaps the information is stored at youtube's servers):
-# -Video id
-# -Offset
-# -Sort
-# *If the video id or sort in the ctoken contradicts the ASJN, the response is an error. The offset encoded outside the ASJN is ignored entirely.
-# *The ASJN is base64 encoded data, indicated by the fact that the character after "ASJN_i" is one of ("0", "1", "2", "3")
-# *The encoded data is not valid protobuf
-# *The encoded data (after the 5 or so bytes that are always the same) is indistinguishable from random data according to a battery of randomness tests
-# *The ASJN in the ctoken provided by a response changes in regular intervals of about a second or two.
-# *Old ASJN's continue to work, and start at the same comment even if new comments have been posted since
-# *The ASJN has no relation with any of the data in the response it came from
-
-def make_comment_ctoken(video_id, sort=0, offset=0, secret_key=''):
- video_id = proto.as_bytes(video_id)
- secret_key = proto.as_bytes(secret_key)
-
-
- page_info = proto.string(4,video_id) + proto.uint(6, sort)
- offset_information = proto.nested(4, page_info) + proto.uint(5, offset)
- if secret_key:
- offset_information = proto.string(1, secret_key) + offset_information
-
- result = proto.nested(2, proto.string(2, video_id)) + proto.uint(3,6) + proto.nested(6, offset_information)
- return base64.urlsafe_b64encode(result).decode('ascii')
-
-mobile_headers = {
- 'Host': 'm.youtube.com',
- 'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1',
- 'Accept': '*/*',
- 'Accept-Language': 'en-US,en;q=0.5',
- 'X-YouTube-Client-Name': '2',
- 'X-YouTube-Client-Version': '1.20180613',
-}
-def request_comments(ctoken, replies=False):
- if replies: # let's make it use different urls for no reason despite all the data being encoded
- base_url = "https://m.youtube.com/watch_comment?action_get_comment_replies=1&ctoken="
- else:
- base_url = "https://m.youtube.com/watch_comment?action_get_comments=1&ctoken="
- url = base_url + ctoken.replace("=", "%3D") + "&pbj=1"
- print("Sending comments ajax request")
- for i in range(0,8): # don't retry more than 8 times
- content = fetch_url(url, headers=mobile_headers)
- if content[0:4] == b")]}'": # random closing characters included at beginning of response for some reason
- content = content[4:]
- elif content[0:10] == b'\n<!DOCTYPE': # occasionally returns html instead of json for no reason
- content = b''
- print("got <!DOCTYPE>, retrying")
- continue
- break
- '''with open('comments_debug', 'wb') as f:
- f.write(content)'''
- return content
-
-def parse_comments(content, replies=False):
- try:
- content = json.loads(uppercase_escape(content.decode('utf-8')))
- #print(content)
- comments_raw = content['content']['continuation_contents']['contents']
- ctoken = default_multi_get(content, 'content', 'continuation_contents', 'continuations', 0, 'continuation', default='')
-
- comments = []
- for comment_raw in comments_raw:
- replies_url = ''
- if not replies:
- if comment_raw['replies'] is not None:
- ctoken = comment_raw['replies']['continuations'][0]['continuation']
- replies_url = URL_ORIGIN + '/comments?ctoken=' + ctoken + "&replies=1"
- comment_raw = comment_raw['comment']
- comment = {
- 'author': comment_raw['author']['runs'][0]['text'],
- 'author_url': comment_raw['author_endpoint']['url'],
- 'author_avatar': comment_raw['author_thumbnail']['url'],
- 'likes': comment_raw['like_count'],
- 'published': comment_raw['published_time']['runs'][0]['text'],
- 'text': comment_raw['content']['runs'],
- 'reply_count': '',
- 'replies_url': replies_url,
- }
- comments.append(comment)
- except Exception as e:
- print('Error parsing comments: ' + str(e))
- comments = ()
- ctoken = ''
- else:
- print("Finished getting and parsing comments")
- return {'ctoken': ctoken, 'comments': comments}
-
-def get_comments_html(result):
- html_result = ''
- for comment in result['comments']:
- replies = ''
- if comment['replies_url']:
- replies = reply_link_template.substitute(url=comment['replies_url'])
- html_result += comment_template.substitute(
- author=html.escape(comment['author']),
- author_url = URL_ORIGIN + comment['author_url'],
- author_avatar = '/' + comment['author_avatar'],
- likes = str(comment['likes']) + ' likes' if str(comment['likes']) != '0' else '',
- published = comment['published'],
- text = format_text_runs(comment['text']),
- datetime = '', #TODO
- replies=replies,
- #replies='',
- )
- return html_result, result['ctoken']
-
-def video_comments(video_id, sort=0, offset=0, secret_key=''):
- result = parse_comments(request_comments(make_comment_ctoken(video_id, sort, offset, secret_key)))
- return get_comments_html(result)
-
-more_comments_template = Template('''<a class="page-button more-comments" href="$url">More comments</a>''')
-
-def get_comments_page(query_string):
- parameters = urllib.parse.parse_qs(query_string)
- ctoken = parameters['ctoken'][0]
- replies = default_multi_get(parameters, 'replies', 0, default="0") == "1"
-
- result = parse_comments(request_comments(ctoken, replies), replies)
- comments_html, ctoken = get_comments_html(result)
- if ctoken == '':
- more_comments_button = ''
- else:
- more_comments_button = more_comments_template.substitute(url = URL_ORIGIN + '/comments?ctoken=' + ctoken)
-
- return yt_comments_template.substitute(
- comments = comments_html,
- page_title = 'Comments',
- more_comments_button=more_comments_button,
- )
-
+import json +import youtube.proto as proto +import base64 +from youtube.common import uppercase_escape, default_multi_get, format_text_runs, URL_ORIGIN, fetch_url +from string import Template +import urllib.request +import urllib +import html +comment_template = Template(''' + <div class="comment-container"> + <div class="comment"> + <a class="author-avatar" href="$author_url" title="$author"> + <img class="author-avatar-img" src="$author_avatar"> + </a> + <address> + <a class="author" href="$author_url" title="$author">$author</a> + </address> + <span class="text">$text</span> + <time datetime="$datetime">$published</time> + <span class="likes">$likes</span> +$replies + </div> + + </div> +''') +reply_link_template = Template(''' + <a href="$url" class="replies">View replies</a> +''') +with open("yt_comments_template.html", "r") as file: + yt_comments_template = Template(file.read()) + + +# <a class="replies-link" href="$replies_url">$replies_link_text</a> + + +# Here's what I know about the secret key (starting with ASJN_i) +# *The secret key definitely contains the following information (or perhaps the information is stored at youtube's servers): +# -Video id +# -Offset +# -Sort +# *If the video id or sort in the ctoken contradicts the ASJN, the response is an error. The offset encoded outside the ASJN is ignored entirely. +# *The ASJN is base64 encoded data, indicated by the fact that the character after "ASJN_i" is one of ("0", "1", "2", "3") +# *The encoded data is not valid protobuf +# *The encoded data (after the 5 or so bytes that are always the same) is indistinguishable from random data according to a battery of randomness tests +# *The ASJN in the ctoken provided by a response changes in regular intervals of about a second or two. +# *Old ASJN's continue to work, and start at the same comment even if new comments have been posted since +# *The ASJN has no relation with any of the data in the response it came from + +def make_comment_ctoken(video_id, sort=0, offset=0, secret_key=''): + video_id = proto.as_bytes(video_id) + secret_key = proto.as_bytes(secret_key) + + + page_info = proto.string(4,video_id) + proto.uint(6, sort) + offset_information = proto.nested(4, page_info) + proto.uint(5, offset) + if secret_key: + offset_information = proto.string(1, secret_key) + offset_information + + result = proto.nested(2, proto.string(2, video_id)) + proto.uint(3,6) + proto.nested(6, offset_information) + return base64.urlsafe_b64encode(result).decode('ascii') + +mobile_headers = { + 'Host': 'm.youtube.com', + 'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1', + 'Accept': '*/*', + 'Accept-Language': 'en-US,en;q=0.5', + 'X-YouTube-Client-Name': '2', + 'X-YouTube-Client-Version': '1.20180613', +} +def request_comments(ctoken, replies=False): + if replies: # let's make it use different urls for no reason despite all the data being encoded + base_url = "https://m.youtube.com/watch_comment?action_get_comment_replies=1&ctoken=" + else: + base_url = "https://m.youtube.com/watch_comment?action_get_comments=1&ctoken=" + url = base_url + ctoken.replace("=", "%3D") + "&pbj=1" + print("Sending comments ajax request") + for i in range(0,8): # don't retry more than 8 times + content = fetch_url(url, headers=mobile_headers) + if content[0:4] == b")]}'": # random closing characters included at beginning of response for some reason + content = content[4:] + elif content[0:10] == b'\n<!DOCTYPE': # occasionally returns html instead of json for no reason + content = b'' + print("got <!DOCTYPE>, retrying") + continue + break + '''with open('comments_debug', 'wb') as f: + f.write(content)''' + return content + +def parse_comments(content, replies=False): + try: + content = json.loads(uppercase_escape(content.decode('utf-8'))) + #print(content) + comments_raw = content['content']['continuation_contents']['contents'] + ctoken = default_multi_get(content, 'content', 'continuation_contents', 'continuations', 0, 'continuation', default='') + + comments = [] + for comment_raw in comments_raw: + replies_url = '' + if not replies: + if comment_raw['replies'] is not None: + ctoken = comment_raw['replies']['continuations'][0]['continuation'] + replies_url = URL_ORIGIN + '/comments?ctoken=' + ctoken + "&replies=1" + comment_raw = comment_raw['comment'] + comment = { + 'author': comment_raw['author']['runs'][0]['text'], + 'author_url': comment_raw['author_endpoint']['url'], + 'author_avatar': comment_raw['author_thumbnail']['url'], + 'likes': comment_raw['like_count'], + 'published': comment_raw['published_time']['runs'][0]['text'], + 'text': comment_raw['content']['runs'], + 'reply_count': '', + 'replies_url': replies_url, + } + comments.append(comment) + except Exception as e: + print('Error parsing comments: ' + str(e)) + comments = () + ctoken = '' + else: + print("Finished getting and parsing comments") + return {'ctoken': ctoken, 'comments': comments} + +def get_comments_html(result): + html_result = '' + for comment in result['comments']: + replies = '' + if comment['replies_url']: + replies = reply_link_template.substitute(url=comment['replies_url']) + html_result += comment_template.substitute( + author=html.escape(comment['author']), + author_url = URL_ORIGIN + comment['author_url'], + author_avatar = '/' + comment['author_avatar'], + likes = str(comment['likes']) + ' likes' if str(comment['likes']) != '0' else '', + published = comment['published'], + text = format_text_runs(comment['text']), + datetime = '', #TODO + replies=replies, + #replies='', + ) + return html_result, result['ctoken'] + +def video_comments(video_id, sort=0, offset=0, secret_key=''): + result = parse_comments(request_comments(make_comment_ctoken(video_id, sort, offset, secret_key))) + return get_comments_html(result) + +more_comments_template = Template('''<a class="page-button more-comments" href="$url">More comments</a>''') + +def get_comments_page(query_string): + parameters = urllib.parse.parse_qs(query_string) + ctoken = parameters['ctoken'][0] + replies = default_multi_get(parameters, 'replies', 0, default="0") == "1" + + result = parse_comments(request_comments(ctoken, replies), replies) + comments_html, ctoken = get_comments_html(result) + if ctoken == '': + more_comments_button = '' + else: + more_comments_button = more_comments_template.substitute(url = URL_ORIGIN + '/comments?ctoken=' + ctoken) + + return yt_comments_template.substitute( + comments = comments_html, + page_title = 'Comments', + more_comments_button=more_comments_button, + ) + |