akkoma/lib/pleroma/web/web_finger/web_finger.ex

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defmodule Pleroma.Web.WebFinger do
alias Pleroma.{User, XmlBuilder}
alias Pleroma.{Web, Web.OStatus}
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def host_meta do
base_url = Web.base_url
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{
:XRD, %{xmlns: "http://docs.oasis-open.org/ns/xri/xrd-1.0"},
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{
:Link, %{rel: "lrdd", type: "application/xrd+xml", template: "#{base_url}/.well-known/webfinger?resource={uri}"}
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}
}
|> XmlBuilder.to_doc
end
def webfinger(resource) do
host = Web.host
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regex = ~r/acct:(?<username>\w+)@#{host}/
case Regex.named_captures(regex, resource) do
%{"username" => username} ->
user = User.get_cached_by_nickname(username)
{:ok, represent_user(user)}
_ -> nil
end
end
def represent_user(user) do
{
:XRD, %{xmlns: "http://docs.oasis-open.org/ns/xri/xrd-1.0"},
[
{:Subject, "acct:#{user.nickname}@#{Web.host}"},
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{:Alias, user.ap_id},
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{:Link, %{rel: "http://schemas.google.com/g/2010#updates-from", type: "application/atom+xml", href: OStatus.feed_path(user)}}
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]
}
|> XmlBuilder.to_doc
end
end