Various improvements to commenting system
parent
812378ea94
commit
1835300e33
10
defaults.yml
10
defaults.yml
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@ -74,6 +74,9 @@ rophako:
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# key. Do NOT use that one, it was just an example. Make your own!
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secret_key: 'for the love of Arceus, change this key!'
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# How long the session key should last for (in days).
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session_lifetime: 30
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# Password strength: number of iterations for bcrypt password.
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bcrypt_iterations: 12
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@ -141,10 +144,15 @@ rophako:
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comment:
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time_format: *DATE_FORMAT
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# We use Gravatar for comments if the user provides an e-mail address.
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# Specify the URL to a fallback image to use in case they don't have
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# a gravatar.
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default_avatar:
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default_avatar: ""
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# The grace period window that users are allowed to modify or delete their
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# own comments (in hours)
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edit_period: 2
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wiki:
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default_page: Main Page
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@ -80,6 +80,10 @@ Emoticons.load_theme()
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def before_request():
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"""Called before all requests. Initialize global template variables."""
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# Session lifetime.
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app.permanent_session_lifetime = datetime.timedelta(days=Config.security.session_lifetime)
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session.permanent = True
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# Default template vars.
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g.info = rophako.utils.default_vars()
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@ -3,13 +3,14 @@ from __future__ import unicode_literals, absolute_import
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"""Commenting models."""
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from flask import url_for
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from flask import url_for, session
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from itsdangerous import URLSafeSerializer
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import time
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import hashlib
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import urllib
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import random
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import re
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import sys
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import uuid
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from rophako.settings import Config
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import rophako.jsondb as JsonDB
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@ -18,18 +19,39 @@ import rophako.model.emoticons as Emoticons
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from rophako.utils import send_email, render_markdown
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from rophako.log import logger
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def deletion_token():
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"""Retrieves the comment deletion token for the current user's session.
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def add_comment(thread, uid, name, subject, message, url, time, ip, image=None):
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Deletion tokens are random strings saved with a comment's data that allows
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its original commenter to delete or modify their comment on their own,
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within a window of time configurable by the site owner
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(in ``comment.edit_period``).
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If the current session doesn't have a deletion token yet, this function
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will generate and set one. Otherwise it returns the one set last time.
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All comments posted by the same session would share the same deletion
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token.
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"""
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if not "comment_token" in session:
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session["comment_token"] = str(uuid.uuid4())
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return session.get("comment_token")
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def add_comment(thread, uid, name, subject, message, url, time, ip,
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token=None, image=None):
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"""Add a comment to a comment thread.
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* uid is 0 if it's a guest post, otherwise the UID of the user.
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* name is the commenter's name (if a guest)
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* subject is for the e-mails that are sent out
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* message is self explanatory.
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* url is the URL where the comment can be read.
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* time, epoch time of comment.
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* ip is the IP address of the commenter.
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* image is a Gravatar image URL etc.
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Parameters:
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thread (str): the unique comment thread name.
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uid (int): 0 for guest posts, otherwise the UID of the logged-in user.
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name (str): the commenter's name (if a guest)
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subject (str)
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message (str)
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url (str): the URL where the comment can be read (i.e. the blog post)
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time (int): epoch time of the comment.
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ip (str): the user's IP address.
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token (str): the user's session's comment deletion token.
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image (str): the URL to a Gravatar image, if any.
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"""
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# Get the comments for this thread.
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@ -48,6 +70,7 @@ def add_comment(thread, uid, name, subject, message, url, time, ip, image=None):
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message=message,
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time=time or int(time.time()),
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ip=ip,
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token=token,
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)
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write_comments(thread, comments)
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@ -60,20 +83,25 @@ def add_comment(thread, uid, name, subject, message, url, time, ip, image=None):
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# Send the e-mail to the site admins.
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send_email(
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to=Config.site.notify_address,
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subject="New comment: {}".format(subject),
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subject="Comment Added: {}".format(subject),
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message="""{name} has left a comment on: {subject}
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{message}
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To view this comment, please go to {url}
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-----
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=====================
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To view this comment, please go to <{url}>
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This e-mail was automatically generated. Do not reply to it.""".format(
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Was this comment spam? [Delete it]({deletion_link}).""".format(
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name=name,
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subject=subject,
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message=message,
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url=url,
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deletion_link=url_for("comment.quick_delete",
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token=make_quick_delete_token(thread, cid),
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url=url,
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_external=True,
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)
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),
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)
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@ -88,28 +116,25 @@ This e-mail was automatically generated. Do not reply to it.""".format(
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subject="New Comment: {}".format(subject),
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message="""Hello,
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You are currently subscribed to the comment thread '{thread}', and somebody has
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just added a new comment!
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{name} has left a comment on: {subject}
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{message}
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To view this comment, please go to {url}
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-----
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=====================
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This e-mail was automatically generated. Do not reply to it.
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If you wish to unsubscribe from this comment thread, please visit the following
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URL: {unsub}""".format(
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To view this comment, please go to <{url}>""".format(
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thread=thread,
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name=name,
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subject=subject,
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message=message,
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url=url,
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unsub=unsub,
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)
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),
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footer="You received this e-mail because you subscribed to the "
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"comment thread that this comment was added to. You may "
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"[**unsubscribe**]({unsub}) if you like.".format(
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unsub=unsub,
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),
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)
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@ -134,6 +159,84 @@ def delete_comment(thread, cid):
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write_comments(thread, comments)
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def make_quick_delete_token(thread, cid):
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"""Generate a unique tamper-proof token for quickly deleting comments.
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This allows for an instant 'delete' link to be included in the notification
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e-mail sent to the site admins, to delete obviously spammy comments
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quickly.
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It uses ``itsdangerous`` to create a unique token signed by the site's
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secret key so that users can't forge their own tokens.
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Parameters:
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thread (str): comment thread name.
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cid (str): unique comment ID.
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Returns:
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str
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"""
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s = URLSafeSerializer(Config.security.secret_key)
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return s.dumps(dict(
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t=thread,
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c=cid,
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))
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def validate_quick_delete_token(token):
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"""Validate and decode a quick delete token.
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If the token is valid, returns a dict of the thread name and comment ID,
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as keys ``t`` and ``c`` respectively.
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If not valid, returns ``None``.
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"""
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s = URLSafeSerializer(Config.security.secret_key)
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try:
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return s.loads(token)
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except:
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logger.exception("Failed to validate quick-delete token {}".format(token))
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return None
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def is_editable(thread, cid, comment=None):
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"""Determine if the comment is editable by the end user.
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A comment is editable to its own author (even guests) for a window defined
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by the site owner. In this event, the user's session has their
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'comment deletion token' that matches the comment's saved token, and the
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comment was posted recently.
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Site admins (any logged-in user) can always edit all comments.
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Parameters:
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thread (str): the unique comment thread name.
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cid (str): the comment ID.
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comment (dict): if you already have the comment object, you can provide
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it here and save an extra DB lookup.
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Returns:
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bool: True if the user is logged in *OR* has a valid deletion token and
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the comment is relatively new. Otherwise returns False.
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"""
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# Logged in users can always do it.
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if session["login"]:
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return True
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# Get the comment, or bail if not found.
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if comment is None:
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comment = get_comment(thread, cid)
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if not comment:
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return False
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# Make sure the comment's token matches the user's, or bail.
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if comment.get("token", "x") != deletion_token():
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return False
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# And finally, make sure the comment is new enough.
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return time.time() - comment["time"] < 60*60*Config.comment.edit_period
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def count_comments(thread):
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"""Count the comments on a thread."""
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comments = get_comments(thread)
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@ -8,8 +8,7 @@ import time
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import rophako.model.user as User
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import rophako.model.comment as Comment
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from rophako.utils import (template, pretty_time, login_required, sanitize_name,
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remote_addr)
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from rophako.utils import (template, pretty_time, sanitize_name, remote_addr)
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from rophako.plugin import load_plugin
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from rophako.settings import Config
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@ -42,9 +41,18 @@ def preview():
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# Gravatar?
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gravatar = Comment.gravatar(form["contact"])
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if g.info["session"]["login"]:
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form["name"] = g.info["session"]["name"]
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gravatar = "/".join([
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Config.photo.root_public,
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User.get_picture(uid=g.info["session"]["uid"]),
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])
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# Are they submitting?
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if form["action"] == "submit":
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# Make sure they have a deletion token in their session.
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token = Comment.deletion_token()
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Comment.add_comment(
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thread=thread,
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uid=g.info["session"]["uid"],
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@ -55,6 +63,7 @@ def preview():
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subject=form["subject"],
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message=form["message"],
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url=form["url"],
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token=token,
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)
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# Are we subscribing to the thread?
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@ -77,19 +86,45 @@ def preview():
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@mod.route("/delete/<thread>/<cid>")
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@login_required
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def delete(thread, cid):
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"""Delete a comment."""
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if not Comment.is_editable(thread, cid):
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flash("Permission denied; maybe you need to log in?")
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return redirect(url_for("account.login"))
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url = request.args.get("url")
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Comment.delete_comment(thread, cid)
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flash("Comment deleted!")
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return redirect(url or url_for("index"))
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@mod.route("/quickdelete/<token>")
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def quick_delete(token):
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"""Quick-delete a comment.
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This is for the site admins: when a comment is posted, the admins' version
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of the email contains a quick deletion link in case of spam. The ``token``
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here is in relation to that. It's a signed hash via ``itsdangerous`` using
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the site's secret key so that users can't forge their own tokens.
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"""
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data = Comment.validate_quick_delete_token(token)
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if data is None:
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flash("Permission denied: token not valid.")
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return redirect(url_for("index"))
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url = request.args.get("url")
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Comment.delete_comment(data["t"], data["c"])
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flash("Comment has been quick-deleted!")
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return redirect(url or url_for("index"))
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@mod.route("/edit/<thread>/<cid>", methods=["GET", "POST"])
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@login_required
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def edit(thread, cid):
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"""Edit an existing comment."""
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if not Comment.is_editable(thread, cid):
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flash("Permission denied; maybe you need to log in?")
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return redirect(url_for("account.login"))
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url = request.args.get("url")
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comment = Comment.get_comment(thread, cid)
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if not comment:
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@ -172,11 +207,14 @@ def unsubscribe():
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def partial_index(thread, subject, header=True, addable=True):
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"""Partial template for including the index view of a comment thread.
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* thread: unique name for the comment thread
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* subject: subject name for the comment thread
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* header: show the Comments h1 header
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* addable: boolean, can new comments be added to the thread"""
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Parameters:
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thread (str): the unique name for the comment thread.
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subject (str): subject name for the comment thread.
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header (bool): show the 'Comments' H1 header.
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addable (bool): can new comments be added to the thread?
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"""
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# Get all the comments on this thread.
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comments = Comment.get_comments(thread)
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# Sort the comments by most recent on bottom.
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@ -200,6 +238,9 @@ def partial_index(thread, subject, header=True, addable=True):
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# Format the message for display.
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comment["formatted_message"] = Comment.format_message(comment["message"])
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# Was this comment posted by the current user viewing it?
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comment["editable"] = Comment.is_editable(thread, cid, comment)
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sorted_comments.append(comment)
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g.info["header"] = header
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@ -25,12 +25,18 @@ There {% if comments|length == 1 %}is{% else %}are{% endif %}
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{{ comment["formatted_message"]|safe }}
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<div class="clear">
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{% if session["login"] %}
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[IP: {{ comment["ip"] }}
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{% if session["login"] or comment["editable"] %}
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[
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{% if session["login"] %}
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IP: {{ comment["ip"] }}
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{% else %}
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<em class="comment-editable">You recently posted this</em>
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{% endif %}
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<a href="{{ url_for('comment.edit', thread=thread, cid=comment['id'], url=url) }}">Edit</a>
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<a href="{{ url_for('comment.delete', thread=thread, cid=comment['id'], url=url) }}" onclick="return window.confirm('Are you sure?')">Delete</a>]
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<a href="{{ url_for('comment.delete', thread=thread, cid=comment['id'], url=url) }}" onclick="return window.confirm('Are you sure?')">Delete</a>
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]
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{% endif %}
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</div>
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</div><p>
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@ -8,7 +8,7 @@ This is a preview of what your comment is going to look like once posted.<p>
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<div class="comment">
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<div class="comment-author">
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{% if contact %}
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{% if gravatar %}
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<img src="{{ gravatar }}" alt="Avatar" width="96" height="96">
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{% else %}
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<img src="/static/avatars/default.png" alt="guest" width="96" height="96">
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@ -33,4 +33,4 @@ This is a preview of what your comment is going to look like once posted.<p>
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{% include "comment/form.inc.html" %}
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{% endblock %}
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{% endblock %}
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@ -48,12 +48,12 @@ def send():
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subject="Contact Form on {}: {}".format(Config.site.site_name, subject),
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message="""A visitor to {site_name} has sent you a message!
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IP Address: {ip}
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User Agent: {ua}
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Referrer: {referer}
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Name: {name}
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E-mail: {email}
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Subject: {subject}
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* IP Address: `{ip}`
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* User Agent: `{ua}`
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* Referrer: <{referer}>
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* Name: {name}
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* E-mail: <{email}>
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* Subject: {subject}
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{message}""".format(
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site_name=Config.site.site_name,
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@ -236,14 +236,47 @@ def parse_anchors(html):
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return toc
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def send_email(to, subject, message, sender=None, reply_to=None):
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"""Send an e-mail out."""
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def send_email(to, subject, message, header=None, footer=None, sender=None,
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reply_to=None):
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"""Send a (markdown-formatted) e-mail out.
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This will deliver an HTML-formatted e-mail (using the ``email.inc.html``
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template) using the rendered Markdown contents of ``message`` and
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``footer``. It will also send a plain text version using the raw Markdown
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formatting in case the user can't accept HTML.
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Parameters:
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to ([]str): list of addresses to send the message to.
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subject (str): email subject and title.
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message (str): the email body, in Markdown format.
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header (str): the header text for the HTML email (plain text).
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footer (str): optional email footer, in Markdown format. The default
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footer is defined in the ``email.inc.html`` template.
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sender (str): optional sender email address. Defaults to the one
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specified in the site configuration.
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reply_to (str): optional Reply-To address header.
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"""
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if sender is None:
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sender = Config.mail.sender
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if type(to) != list:
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to = [to]
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# Render the Markdown bits.
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if footer:
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footer = render_markdown(footer)
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# Default header matches the subject.
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if not header:
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header = subject
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html_message = render_template("email.inc.html",
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title=subject,
|
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header=header,
|
||||
message=render_markdown(message),
|
||||
footer=footer,
|
||||
)
|
||||
|
||||
logger.info("Send email to {}".format(to))
|
||||
if Config.mail.method == "smtp":
|
||||
# Send mail with SMTP.
|
||||
|
|
@ -260,6 +293,9 @@ def send_email(to, subject, message, sender=None, reply_to=None):
|
|||
text = MIMEText(message, "plain", "utf-8")
|
||||
msg.attach(text)
|
||||
|
||||
html = MIMEText(html_message, "html", "utf-8")
|
||||
msg.attach(html)
|
||||
|
||||
# Send the e-mail.
|
||||
try:
|
||||
server = smtplib.SMTP(Config.mail.server, Config.mail.port)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,43 @@
|
|||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta name="viewport" content="width=device-width">
|
||||
<meta http-equiv="X-UA-Compatible" content="IE=edge">
|
||||
<meta name="x-apple-disable-message-reformatting"><!-- Disable auto-scale in iOS 10 Mail -->
|
||||
<title>{{ title }}</title>
|
||||
</head>
|
||||
<body width="100%" bgcolor="#FFFFFF" color="#000000" style="margin: 0; mso-line-height-rule: exactly;">
|
||||
|
||||
<center>
|
||||
<table width="90%" cellspacing="0" cellpadding="8" style="border: 1px solid #000000">
|
||||
<tr>
|
||||
<td align="left" valign="top" bgcolor="#C0C0C0">
|
||||
<font face="Helvetica,Arial,Verdana-sans-serif" size="6" color="#000000">
|
||||
<b>{{ header }}</b>
|
||||
</font>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td align="left" valign="top" bgcolor="#FEFEFE">
|
||||
<font face="Helvetica,Arial,Verdana-sans-serif" size="3" color="#000000">
|
||||
{{ message|safe }}
|
||||
</font>
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td align="left" valign="top" bgcolor="#C0C0C0">
|
||||
<font face="Helvetica,Arial,Verdana-sans-serif" size="3" color="#000000">
|
||||
{% if footer %}
|
||||
{{ footer|safe }}
|
||||
{% else %}
|
||||
This e-mail was automatically generated; do not reply to it.
|
||||
{% endif %}
|
||||
</font>
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
</center>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Reference in New Issue