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refactor(activitypub): handle failure finding public key in actor keys

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Signed-off-by: Thomas Citharel <tcit@tcit.fr>
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Thomas Citharel 2023-12-06 08:25:02 +01:00
parent 3a55baeffd
commit 5b337f952a
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2 changed files with 36 additions and 19 deletions
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21
lib/federation/activity_pub/utils.ex
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@ -680,19 +680,22 @@ defmodule Mobilizon.Federation.ActivityPub.Utils do
@doc """
Converts PEM encoded keys to a public key representation
"""
@spec pem_to_public_key_pem(String.t()) :: String.t()
@spec pem_to_public_key_pem(String.t()) :: String.t() | {:error, :no_publickey_found}
def pem_to_public_key_pem(pem) do
public_key = pem_to_public_key(pem)
public_key = :public_key.pem_entry_encode(:RSAPublicKey, public_key)
:public_key.pem_encode([public_key])
case :public_key.pem_decode(pem) do
[key_code] ->
public_key = pem_to_public_key(key_code)
public_key = :public_key.pem_entry_encode(:RSAPublicKey, public_key)
:public_key.pem_encode([public_key])
_ ->
{:error, :no_publickey_found}
end
end
@spec pem_to_public_key(String.t()) :: {:RSAPublicKey, any(), any()}
defp pem_to_public_key(pem) do
[key_code] = :public_key.pem_decode(pem)
key = :public_key.pem_entry_decode(key_code)
case key do
defp pem_to_public_key(key_code) do
case :public_key.pem_entry_decode(key_code) do
{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} ->
{:RSAPublicKey, modulus, exponent}

34
lib/federation/activity_stream/converter/actor.ex
View file

@ -112,19 +112,11 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Actor do
},
"discoverable" => actor.visibility == :public,
"openness" => actor.openness,
"manuallyApprovesFollowers" => actor.manually_approves_followers,
"publicKey" => %{
"id" => "#{actor.url}#main-key",
"owner" => actor.url,
"publicKeyPem" =>
if(is_nil(actor.domain) and not is_nil(actor.keys),
do: Utils.pem_to_public_key_pem(actor.keys),
else: actor.keys
)
}
"manuallyApprovesFollowers" => actor.manually_approves_followers
}
actor_data
|> add_keys(actor)
|> add_endpoints(actor)
|> maybe_add_members(actor)
|> maybe_add_avatar_picture(actor)
@ -132,6 +124,28 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Actor do
|> maybe_add_physical_address(actor)
end
@spec add_keys(map(), ActorModel.t()) :: map()
defp add_keys(actor_data, %ActorModel{} = actor) do
keys =
if is_nil(actor.domain) and not is_nil(actor.keys) do
case Utils.pem_to_public_key_pem(actor.keys) do
{:error, :no_publickey_found} ->
raise "No publickey found in private keys"
public_key when is_binary(public_key) ->
public_key
end
else
actor.keys
end
Map.put(actor_data, "publicKey", %{
"id" => "#{actor.url}#main-key",
"owner" => actor.url,
"publicKeyPem" => keys
})
end
defp add_endpoints(%{"endpoints" => endpoints} = actor_data, %ActorModel{} = actor) do
new_endpoints = %{
"members" => actor.members_url,