57 lines
1.9 KiB
Elixir
57 lines
1.9 KiB
Elixir
defmodule MatrixServerWeb.FederationClient do
|
|
use Tesla
|
|
|
|
alias MatrixServerWeb.Endpoint
|
|
alias MatrixServerWeb.Federation.Request.GetSigningKeys
|
|
alias MatrixServerWeb.Router.Helpers, as: RouteHelpers
|
|
|
|
# TODO: Maybe create database-backed homeserver struct to pass to client function.
|
|
|
|
@middleware [
|
|
Tesla.Middleware.JSON
|
|
]
|
|
|
|
@adapter {Tesla.Adapter.Finch, name: MatrixServerWeb.HTTPClient}
|
|
|
|
def client(server_name) do
|
|
Tesla.client([{Tesla.Middleware.BaseUrl, "http://" <> server_name} | @middleware], @adapter)
|
|
end
|
|
|
|
def get_signing_keys(client) do
|
|
# TODO: Extract into seperate function.
|
|
# TODO: Check signatures for each verify key.
|
|
with {:ok, %Tesla.Env{body: body}} <-
|
|
Tesla.get(client, RouteHelpers.key_path(Endpoint, :get_signing_keys)),
|
|
%Ecto.Changeset{valid?: true} = cs <- GetSigningKeys.changeset(body) do
|
|
{:ok, Ecto.Changeset.apply_changes(cs)}
|
|
else
|
|
_ -> :error
|
|
end
|
|
end
|
|
|
|
# TODO: Create tesla middleware to add signature and headers.
|
|
def query_profile(client, server_name, user_id, field \\ nil) do
|
|
origin = MatrixServer.server_name()
|
|
path = RouteHelpers.query_path(Endpoint, :profile) |> Tesla.build_url(user_id: user_id)
|
|
path = if field, do: Tesla.build_url(path, field: field), else: path
|
|
|
|
object_to_sign = %{
|
|
method: "GET",
|
|
uri: path,
|
|
origin: origin,
|
|
destination: server_name
|
|
}
|
|
|
|
{:ok, signature, key_id} = MatrixServer.KeyServer.sign_object(object_to_sign)
|
|
signatures = %{origin => %{key_id => signature}}
|
|
auth_headers = create_signature_authorization_headers(signatures, origin)
|
|
|
|
Tesla.get(client, path, headers: auth_headers)
|
|
end
|
|
|
|
defp create_signature_authorization_headers(signatures, origin) do
|
|
Enum.map(signatures[origin], fn {key, sig} ->
|
|
{"Authorization", "X-Matrix origin=#{origin},key=\"#{key}\",sig=\"#{sig}\""}
|
|
end)
|
|
end
|
|
end
|