discourse/lib/topic_upload_security_manag...

115 lines
3.9 KiB
Ruby

# frozen_string_literal: true
##
# There are certain conditions with secure uploads when the security of
# uploads will need to change depending on the context they reside in.
#
# For example on these conditions:
# * Topic category change
# * Topic switching between PM and public topic
# * Post moving between topics
#
# We need to go through all of the posts in that topic that
# own uploads via access_control_post_id, then for those uploads determine
# if they still need to be secure or not. For example an upload could be
# secure if it is in a PM, and then when the topic gets converted to a public
# topic the upload no longer needs to remain secure as it is no longer in
# a secure context.
class TopicUploadSecurityManager
def initialize(topic)
@topic = topic
end
def run
rebaked_posts = []
Rails.logger.debug("Updating upload security in topic #{@topic.id}")
posts_owning_uploads.each do |post|
Post.transaction do
Rails.logger.debug("Updating upload security in topic #{@topic.id} - post #{post.id}")
post.topic = @topic
secure_status_did_change =
post.owned_uploads_via_access_control.any? do |upload|
# We already have the post preloaded so we may as well
# attach it here to avoid another load in UploadSecurity
# (which is called via update_secure_status)
upload.access_control_post = post
upload.update_secure_status(source: "topic upload security")
end
if secure_status_did_change
post.rebake!
rebaked_posts << post
end
Rails.logger.debug(
"Security updated & rebake complete in topic #{@topic.id} - post #{post.id}",
)
end
end
return rebaked_posts if !SiteSetting.secure_uploads
# We only want to do this if secure uploads is enabled. If
# the setting is turned on after a site has been running
# already, we want to make sure that any post moves after
# this are handled and upload secure statuses and ACLs
# are updated appropriately, as well as setting the access control
# post for secure uploads missing it.
#
# Examples (all after secure uploads is enabled):
#
# -> a public topic is moved to a private category after
# -> a PM is converted to a public topic
# -> a public topic is converted to a PM
# -> a topic is moved from a private to a public category
posts_with_unowned_uploads.each do |post|
Post.transaction do
Rails.logger.debug(
"Setting upload access control posts in topic #{@topic.id} - post #{post.id}",
)
post.topic = @topic
secure_status_did_change =
post.uploads.any? do |upload|
first_post_upload_appeared_in =
upload.upload_references.where(target_type: "Post").first.target
if first_post_upload_appeared_in == post
upload.update(access_control_post: post)
upload.update_secure_status(source: "topic upload security")
else
false
end
end
if secure_status_did_change
post.rebake!
rebaked_posts << post
end
Rails.logger.debug(
"Completed changing access control posts #{secure_status_did_change ? "and rebaking" : ""} in topic #{@topic.id} - post #{post.id}",
)
end
end
Rails.logger.debug("Completed updating upload security in topic #{@topic.id}!")
rebaked_posts
end
private
def posts_owning_uploads
Post.where(topic_id: @topic.id, id: Upload.select(:access_control_post_id))
end
def posts_with_unowned_uploads
Post.where(
topic_id: @topic.id,
id:
UploadReference.where(
target_type: "Post",
upload: Upload.where(access_control_post_id: nil),
).select(:target_id),
).includes(:uploads)
end
end