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Better handling of bad host-meta responses

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Signed-off-by: Thomas Citharel <tcit@tcit.fr>
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Thomas Citharel 2021-06-10 11:40:54 +02:00
parent 8e59e2f06b
commit 19792abd41
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1 changed files with 4 additions and 1 deletions
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5
lib/federation/web_finger/web_finger.ex
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@ -144,7 +144,7 @@ defmodule Mobilizon.Federation.WebFinger do
@spec find_webfinger_endpoint(String.t()) :: String.t()
def find_webfinger_endpoint(domain) when is_binary(domain) do
with {:ok, %{body: body}} <- fetch_document("http://#{domain}/.well-known/host-meta"),
link_template <- find_link_from_template(body) do
link_template when is_binary(link_template) <- find_link_from_template(body) do
{:ok, link_template}
end
end
@ -203,6 +203,9 @@ defmodule Mobilizon.Federation.WebFinger do
xpath(doc, ~x"//Link[@rel=\"lrdd\"][@type=\"application/json\"]/@template"s),
res when res in [nil, ""] <- xpath(doc, ~x"//Link[@rel=\"lrdd\"]/@template"s),
do: {:error, :link_not_found}
catch
:exit, _e ->
{:error, :link_not_found}
end
@spec fetch_document(String.t()) :: Tesla.Env.result()