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Merge branch 'security/ap-unsigned-create' into 'develop'

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activitypub inbox: only accept unsigned/invalid-signature relayed creates, nothing else

See merge request pleroma/pleroma!361
This commit is contained in:
kaniini 2018-09-28 00:14:53 +00:00
commit db989d1fa4
1 changed files with 17 additions and 7 deletions
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24
lib/pleroma/web/activity_pub/activity_pub_controller.ex
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@ -93,19 +93,29 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
json(conn, "ok")
end
# only accept relayed Creates
def inbox(conn, %{"type" => "Create"} = params) do
Logger.info(
"Signature missing or not from author, relayed Create message, fetching object from source"
)
ActivityPub.fetch_object_from_id(params["object"]["id"])
json(conn, "ok")
end
def inbox(conn, params) do
headers = Enum.into(conn.req_headers, %{})
if !String.contains?(headers["signature"] || "", params["actor"]) do
Logger.info("Signature not from author, relayed message, fetching from source")
ActivityPub.fetch_object_from_id(params["object"]["id"])
else
Logger.info("Signature error - make sure you are forwarding the HTTP Host header!")
Logger.info("Could not validate #{params["actor"]}")
if String.contains?(headers["signature"], params["actor"]) do
Logger.info(
"Signature validation error for: #{params["actor"]}, make sure you are forwarding the HTTP Host header!"
)
Logger.info(inspect(conn.req_headers))
end
json(conn, "ok")
json(conn, "error")
end
def relay(conn, params) do