275 lines
7.4 KiB
Ruby
275 lines
7.4 KiB
Ruby
# frozen_string_literal: true
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#mixin for all guardian methods dealing with post permissions
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module PostGuardian
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def unrestricted_link_posting?
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authenticated? && @user.has_trust_level?(TrustLevel[SiteSetting.min_trust_to_post_links])
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end
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def link_posting_access
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if unrestricted_link_posting?
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'full'
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elsif SiteSetting.whitelisted_link_domains.present?
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'limited'
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else
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'none'
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end
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end
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def can_post_link?(host: nil)
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return false if host.blank?
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unrestricted_link_posting? ||
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SiteSetting.whitelisted_link_domains.split('|').include?(host)
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end
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# Can the user act on the post in a particular way.
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# taken_actions = the list of actions the user has already taken
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def post_can_act?(post, action_key, opts: {}, can_see_post: nil)
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return false unless (can_see_post.nil? && can_see_post?(post)) || can_see_post
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# no warnings except for staff
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return false if action_key == :notify_user && (post.user.blank? || (!is_staff? && opts[:is_warning].present? && opts[:is_warning] == 'true'))
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taken = opts[:taken_actions].try(:keys).to_a
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is_flag = PostActionType.notify_flag_types[action_key]
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already_taken_this_action = taken.any? && taken.include?(PostActionType.types[action_key])
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already_did_flagging = taken.any? && (taken & PostActionType.notify_flag_types.values).any?
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result = if authenticated? && post && !@user.anonymous?
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# Silenced users can't flag
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return false if is_flag && @user.silenced?
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# Hidden posts can't be flagged
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return false if is_flag && post.hidden?
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# post made by staff, but we don't allow staff flags
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return false if is_flag &&
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(!SiteSetting.allow_flagging_staff?) &&
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post&.user&.staff?
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if action_key == :notify_user &&
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(!SiteSetting.enable_personal_messages? ||
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!@user.has_trust_level?(SiteSetting.min_trust_to_send_messages))
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return false
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end
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# we allow flagging for trust level 1 and higher
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# always allowed for private messages
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(is_flag && not(already_did_flagging) && (@user.has_trust_level?(TrustLevel[SiteSetting.min_trust_to_flag_posts]) || post.topic.private_message?)) ||
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# not a flagging action, and haven't done it already
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not(is_flag || already_taken_this_action) &&
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# nothing except flagging on archived topics
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not(post.topic&.archived?) &&
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# nothing except flagging on deleted posts
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not(post.trashed?) &&
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# don't like your own stuff
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not(action_key == :like && (post.user.blank? || is_my_own?(post)))
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end
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!!result
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end
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def can_lock_post?(post)
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can_see_post?(post) && is_staff?
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end
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# Can we see who acted on a post in a particular way?
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def can_see_post_actors?(topic, post_action_type_id)
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return true if is_admin?
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return false unless topic
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type_symbol = PostActionType.types[post_action_type_id]
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return false if type_symbol == :bookmark
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return false if type_symbol == :notify_user && !is_moderator?
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return can_see_flags?(topic) if PostActionType.is_flag?(type_symbol)
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true
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end
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def can_delete_all_posts?(user)
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is_staff? &&
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user &&
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!user.admin? &&
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(user.first_post_created_at.nil? || user.first_post_created_at >= SiteSetting.delete_user_max_post_age.days.ago) &&
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user.post_count <= SiteSetting.delete_all_posts_max.to_i
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end
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# Creating Method
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def can_create_post?(parent)
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return false if !SiteSetting.enable_system_message_replies? && parent.try(:subtype) == "system_message"
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(!SpamRule::AutoSilence.prevent_posting?(@user) || (!!parent.try(:private_message?) && parent.allowed_users.include?(@user))) && (
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!parent ||
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!parent.category ||
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Category.post_create_allowed(self).where(id: parent.category.id).count == 1
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)
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end
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# Editing Method
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def can_edit_post?(post)
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if Discourse.static_doc_topic_ids.include?(post.topic_id) && !is_admin?
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return false
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end
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return true if is_admin?
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# Must be staff to edit a locked post
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return false if post.locked? && !is_staff?
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return can_create_post?(post.topic) if (
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is_staff? ||
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(
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SiteSetting.trusted_users_can_edit_others? &&
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@user.has_trust_level?(TrustLevel[4])
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)
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)
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if post.topic&.archived? || post.user_deleted || post.deleted_at
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return false
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end
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if post.wiki && (@user.trust_level >= SiteSetting.min_trust_to_edit_wiki_post.to_i)
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return can_create_post?(post.topic)
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end
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if @user.trust_level < SiteSetting.min_trust_to_edit_post
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return false
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end
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if is_my_own?(post)
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return false if @user.silenced?
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if post.hidden?
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return false if post.hidden_at.present? &&
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post.hidden_at >= SiteSetting.cooldown_minutes_after_hiding_posts.minutes.ago
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# If it's your own post and it's hidden, you can still edit it
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return true
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end
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return !post.edit_time_limit_expired?(@user)
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end
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false
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end
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def can_delete_post_or_topic?(post)
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post.is_first_post? ? post.topic && can_delete_topic?(post.topic) : can_delete_post?(post)
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end
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# Deleting Methods
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def can_delete_post?(post)
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return false if !can_see_post?(post)
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# Can't delete the first post
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return false if post.is_first_post?
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# Can't delete posts in archived topics unless you are staff
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return false if !is_staff? && post.topic.archived?
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# You can delete your own posts
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return !post.user_deleted? if is_my_own?(post)
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is_staff?
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end
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# Recovery Method
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def can_recover_post?(post)
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if is_staff?
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!!post.deleted_at
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else
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is_my_own?(post) && post.user_deleted && !post.deleted_at
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end
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end
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def can_delete_post_action?(post_action)
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return false unless is_my_own?(post_action) && !post_action.is_private_message?
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# Bookmarks do not have a time constraint
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return true if post_action.is_bookmark?
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post_action.created_at > SiteSetting.post_undo_action_window_mins.minutes.ago
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end
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def can_see_post?(post)
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return false if post.blank?
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return true if is_admin?
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return false unless can_see_topic?(post.topic)
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return false unless post.user == @user || Topic.visible_post_types(@user).include?(post.post_type)
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return false if !is_moderator? && post.deleted_at.present?
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true
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end
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def can_view_edit_history?(post)
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return false unless post
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if !post.hidden
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return true if post.wiki || SiteSetting.edit_history_visible_to_public
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end
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authenticated? &&
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(is_staff? || @user.has_trust_level?(TrustLevel[4]) || @user.id == post.user_id) &&
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can_see_post?(post)
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end
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def can_change_post_owner?
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is_admin?
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end
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def can_change_post_timestamps?
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is_staff?
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end
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def can_wiki?(post)
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return false unless authenticated?
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return true if is_staff? || @user.has_trust_level?(TrustLevel[4])
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if @user.has_trust_level?(SiteSetting.min_trust_to_allow_self_wiki) && is_my_own?(post)
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return false if post.hidden?
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return !post.edit_time_limit_expired?(@user)
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end
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false
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end
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def can_change_post_type?
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is_staff?
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end
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def can_rebake?
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is_staff? || @user.has_trust_level?(TrustLevel[4])
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end
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def can_see_flagged_posts?
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is_staff?
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end
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def can_see_deleted_posts?
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is_staff?
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end
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def can_view_raw_email?(post)
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post && (is_staff? || post.user_id == @user.id)
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end
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def can_unhide?(post)
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post.try(:hidden) && is_staff?
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end
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def can_skip_bump?
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is_staff? || @user.has_trust_level?(TrustLevel[4])
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end
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end
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