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fix(nodeinfo): make sure we only process JSON content 

Signed-off-by: Thomas Citharel <tcit@tcit.fr>
This commit is contained in:
Thomas Citharel 2023-12-22 16:03:59 +01:00
parent 881695ca19
commit da3b074619
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GPG Key ID: A061B9DDE0CA0773
3 changed files with 65 additions and 13 deletions
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24
lib/federation/node_info.ex
View File

@ -5,6 +5,7 @@ defmodule Mobilizon.Federation.NodeInfo do
alias Mobilizon.Service.HTTP.WebfingerClient
require Logger
import Mobilizon.Service.HTTP.Utils, only: [is_content_type?: 2]
@application_uri "https://www.w3.org/ns/activitystreams#Application"
@nodeinfo_rel_2_0 "http://nodeinfo.diaspora.software/ns/schema/2.0"
@ -31,7 +32,9 @@ defmodule Mobilizon.Federation.NodeInfo do
with {:ok, endpoint} when is_binary(endpoint) <- fetch_nodeinfo_details(host),
:ok <- Logger.debug("Going to get NodeInfo information from URL #{endpoint}"),
{:ok, %{body: body, status: code}} when code in 200..299 <- WebfingerClient.get(endpoint) do
{:ok, %{body: body, status: code, headers: headers}} when code in 200..299 <-
WebfingerClient.get(endpoint),
{:ok, body} <- validate_json_response(body, headers) do
Logger.debug("Found nodeinfo information for domain #{host}")
{:ok, body}
else
@ -58,8 +61,8 @@ defmodule Mobilizon.Federation.NodeInfo do
prefix = if @env !== :dev, do: "https", else: "http"
case WebfingerClient.get("#{prefix}://#{host}/.well-known/nodeinfo") do
{:ok, %{body: body, status: code}} when code in 200..299 ->
{:ok, body}
{:ok, %{body: body, status: code, headers: headers}} when code in 200..299 ->
validate_json_response(body, headers)
err ->
Logger.debug("Failed to fetch NodeInfo data #{inspect(err)}")
@ -102,4 +105,19 @@ defmodule Mobilizon.Federation.NodeInfo do
rel == relation and is_binary(href)
end)
end
@spec validate_json_response(map() | String.t(), list()) ::
{:ok, String.t()} | {:error, :bad_content_type | :body_not_json}
defp validate_json_response(body, headers) do
cond do
!is_content_type?(headers, "application/json") ->
{:error, :bad_content_type}
!is_map(body) ->
{:error, :body_not_json}
true ->
{:ok, body}
end
end
end

49
test/federation/node_info_test.exs
View File

@ -24,7 +24,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://event-federation.eu/.well-known/nodeinfo"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_data,
headers: [{"content-type", "application/json"}]
}}
end)
assert "https://event-federation.eu/actor-relay" ==
@ -76,7 +81,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://mobilizon.fr/.well-known/nodeinfo"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_end_point_data,
headers: [{"content-type", "application/json"}]
}}
end)
WebfingerClientMock
@ -86,7 +96,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://mobilizon.fr/.well-known/nodeinfo/2.1"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_data,
headers: [{"content-type", "application/json"}]
}}
end)
assert {:ok, data} = NodeInfo.nodeinfo("mobilizon.fr")
@ -107,7 +122,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://event-federation.eu/.well-known/nodeinfo"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_end_point_data,
headers: [{"content-type", "application/json"}]
}}
end)
WebfingerClientMock
@ -117,7 +137,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://event-federation.eu/wp-json/activitypub/1.0/nodeinfo"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_wp_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_wp_data,
headers: [{"content-type", "application/json"}]
}}
end)
assert {:ok, data} = NodeInfo.nodeinfo("event-federation.eu")
@ -138,7 +163,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://somewhere.tld/.well-known/nodeinfo"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_end_point_data,
headers: [{"content-type", "application/json"}]
}}
end)
assert {:error, :no_node_info_endpoint_found} = NodeInfo.nodeinfo("somewhere.tld")
@ -169,7 +199,12 @@ defmodule Mobilizon.Federation.NodeInfoTest do
url: "https://mobilizon.fr/.well-known/nodeinfo"
},
_opts ->
{:ok, %Tesla.Env{status: 200, body: nodeinfo_end_point_data}}
{:ok,
%Tesla.Env{
status: 200,
body: nodeinfo_end_point_data,
headers: [{"content-type", "application/json"}]
}}
end)
WebfingerClientMock

5
test/service/workers/refresh_instances_test.exs
View File

@ -5,7 +5,6 @@ defmodule Mobilizon.Service.Workers.RefreshInstancesTest do
alias Mobilizon.Actors.Actor
alias Mobilizon.Federation.ActivityPub.Relay
alias Mobilizon.Instances.Instance
alias Mobilizon.Service.Workers.RefreshInstances
use Mobilizon.DataCase
@ -14,7 +13,7 @@ defmodule Mobilizon.Service.Workers.RefreshInstancesTest do
test "unless if local actor" do
# relay = Mobilizon.Web.Relay.get_actor()
assert {:error, :not_remote_instance} ==
RefreshInstances.refresh_instance_actor(%Instance{domain: nil})
RefreshInstances.refresh_instance_actor(nil)
end
test "unless if local relay actor" do
@ -22,7 +21,7 @@ defmodule Mobilizon.Service.Workers.RefreshInstancesTest do
%URI{host: domain} = URI.new!(url)
assert {:error, :not_remote_instance} ==
RefreshInstances.refresh_instance_actor(%Instance{domain: domain})
RefreshInstances.refresh_instance_actor(domain)
end
end
end