From 8246db2a968943a0cab615b8b5c1439aa4cb2547 Mon Sep 17 00:00:00 2001 From: Mark Felder Date: Sat, 6 Mar 2021 12:02:32 -0600 Subject: [PATCH 1/3] Workaround for URI.merge/2 bug https://github.com/elixir-lang/elixir/issues/10771 If we avoid URI.merge unless we know we need it we reduce the edge cases we could encounter. The site would need to both have "//" in the %URI{:path} and the image needs to be a relative URL. --- lib/pleroma/web/mastodon_api/views/status_view.ex | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex index f3f54e03d..cf8037abb 100644 --- a/lib/pleroma/web/mastodon_api/views/status_view.ex +++ b/lib/pleroma/web/mastodon_api/views/status_view.ex @@ -380,9 +380,15 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do page_url = page_url_data |> to_string image_url = - if is_binary(rich_media["image"]) do - URI.merge(page_url_data, URI.parse(rich_media["image"])) - |> to_string + cond do + !is_binary(rich_media["image"]) -> + nil + + String.starts_with?(rich_media["image"], "http") -> + rich_media["image"] + + true -> + URI.merge(page_url_data, URI.parse(rich_media["image"])) |> to_string end %{ From 029ff6538972b59c6259dd7345ad9c4465fb3f73 Mon Sep 17 00:00:00 2001 From: Mark Felder Date: Thu, 11 Mar 2021 09:20:29 -0600 Subject: [PATCH 2/3] Leverage function pattern matching instead --- lib/pleroma/web/mastodon_api/views/status_view.ex | 36 ++++++++++++++++------- 1 file changed, 26 insertions(+), 10 deletions(-) diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex index cf8037abb..581b4e952 100644 --- a/lib/pleroma/web/mastodon_api/views/status_view.ex +++ b/lib/pleroma/web/mastodon_api/views/status_view.ex @@ -379,18 +379,15 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do page_url = page_url_data |> to_string - image_url = - cond do - !is_binary(rich_media["image"]) -> - nil - - String.starts_with?(rich_media["image"], "http") -> - rich_media["image"] - - true -> - URI.merge(page_url_data, URI.parse(rich_media["image"])) |> to_string + image_url_data = + if is_binary(rich_media["image"]) do + URI.parse(rich_media["image"]) + else + nil end + image_url = get_image_url(image_url_data, page_url_data) + %{ type: "link", provider_name: page_url_data.host, @@ -546,4 +543,23 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do do: %{name: name, website: url} defp build_application(_), do: nil + + # Workaround for Elixir issue #10771 + # Avoid applying URI.merge unless necessary + # TODO: revert to always attempting URI.merge(image_url_data, page_url_data) + # when Elixir 1.12 is the minimum supported version + @spec get_image_url(struct() | nil, struct()) :: String.t() | nil + defp get_image_url( + %URI{scheme: image_scheme, host: image_host} = image_url_data, + %URI{} = _page_url_data + ) + when not is_nil(image_scheme) and not is_nil(image_host) do + image_url_data |> to_string + end + + defp get_image_url(%URI{} = image_url_data, %URI{} = page_url_data) do + URI.merge(page_url_data, image_url_data) |> to_string + end + + defp get_image_url(_, _), do: nil end From b80f868c6b41d1407cf6e4f2df8913bdf7a954c0 Mon Sep 17 00:00:00 2001 From: Mark Felder Date: Sat, 13 Mar 2021 12:27:15 -0600 Subject: [PATCH 3/3] Prefer naming this function build_image_url/2 --- lib/pleroma/web/mastodon_api/views/status_view.ex | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex index 581b4e952..71f659ba0 100644 --- a/lib/pleroma/web/mastodon_api/views/status_view.ex +++ b/lib/pleroma/web/mastodon_api/views/status_view.ex @@ -386,7 +386,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do nil end - image_url = get_image_url(image_url_data, page_url_data) + image_url = build_image_url(image_url_data, page_url_data) %{ type: "link", @@ -548,8 +548,8 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do # Avoid applying URI.merge unless necessary # TODO: revert to always attempting URI.merge(image_url_data, page_url_data) # when Elixir 1.12 is the minimum supported version - @spec get_image_url(struct() | nil, struct()) :: String.t() | nil - defp get_image_url( + @spec build_image_url(struct() | nil, struct()) :: String.t() | nil + defp build_image_url( %URI{scheme: image_scheme, host: image_host} = image_url_data, %URI{} = _page_url_data ) @@ -557,9 +557,9 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do image_url_data |> to_string end - defp get_image_url(%URI{} = image_url_data, %URI{} = page_url_data) do + defp build_image_url(%URI{} = image_url_data, %URI{} = page_url_data) do URI.merge(page_url_data, image_url_data) |> to_string end - defp get_image_url(_, _), do: nil + defp build_image_url(_, _), do: nil end