# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.RichMedia.Parser do
+ require Logger
+
defp parsers do
Pleroma.Config.get([:rich_media, :parsers])
end
def parse(nil), do: {:error, "No URL provided"}
if Pleroma.Config.get(:env) == :test do
+ @spec parse(String.t()) :: {:ok, map()} | {:error, any()}
def parse(url), do: parse_url(url)
else
+ @spec parse(String.t()) :: {:ok, map()} | {:error, any()}
def parse(url) do
- try do
- Cachex.fetch!(:rich_media_cache, url, fn _ ->
- {:commit, parse_url(url)}
- end)
- |> set_ttl_based_on_image(url)
- rescue
- e ->
- {:error, "Cachex error: #{inspect(e)}"}
- end
+ Cachex.fetch!(:rich_media_cache, url, fn _ ->
+ with {:ok, data} <- parse_url(url) do
+ {:commit, {:ok, data}}
+ else
+ error -> {:ignore, error}
+ end
+ end)
+ |> set_ttl_based_on_image(url)
end
end
config :pleroma, :rich_media,
ttl_setters: [MyModule]
"""
+ @spec set_ttl_based_on_image({:ok, map()} | {:error, any()}, String.t()) ::
+ {:ok, map()} | {:error, any()}
def set_ttl_based_on_image({:ok, data}, url) do
with {:ok, nil} <- Cachex.ttl(:rich_media_cache, url),
- ttl when is_number(ttl) <- get_ttl_from_image(data, url) do
+ {:ok, ttl} when is_number(ttl) <- get_ttl_from_image(data, url) do
Cachex.expire_at(:rich_media_cache, url, ttl * 1000)
{:ok, data}
else
end
end
+ def set_ttl_based_on_image({:error, _} = error, _) do
+ Logger.error("parsing error: #{inspect(error)}")
+ error
+ end
+
defp get_ttl_from_image(data, url) do
- Pleroma.Config.get([:rich_media, :ttl_setters])
+ [:rich_media, :ttl_setters]
+ |> Pleroma.Config.get()
|> Enum.reduce({:ok, nil}, fn
module, {:ok, _ttl} ->
module.ttl(data, url)
end
defp parse_url(url) do
- try do
- {:ok, %Tesla.Env{body: html}} = Pleroma.Web.RichMedia.Helpers.rich_media_get(url)
-
+ with {:ok, %Tesla.Env{body: html}} <- Pleroma.Web.RichMedia.Helpers.rich_media_get(url),
+ {:ok, html} <- Floki.parse_document(html) do
html
- |> parse_html()
|> maybe_parse()
|> Map.put("url", url)
|> clean_parsed_data()
|> check_parsed_data()
- rescue
- e ->
- {:error, "Parsing error: #{inspect(e)} #{inspect(__STACKTRACE__)}"}
end
end
- defp parse_html(html), do: Floki.parse_document!(html)
-
defp maybe_parse(html) do
Enum.reduce_while(parsers(), %{}, fn parser, acc ->
case parser.parse(html, acc) do
|> parse_query_params()
|> format_query_params()
|> get_expiration_timestamp()
+ else
+ {:error, "Not aws signed url #{inspect(image)}"}
end
end
- defp is_aws_signed_url(""), do: nil
- defp is_aws_signed_url(nil), do: nil
-
- defp is_aws_signed_url(image) when is_binary(image) do
+ defp is_aws_signed_url(image) when is_binary(image) and image != "" do
%URI{host: host, query: query} = URI.parse(image)
- if String.contains?(host, "amazonaws.com") and String.contains?(query, "X-Amz-Expires") do
- image
- else
- nil
- end
+ String.contains?(host, "amazonaws.com") and String.contains?(query, "X-Amz-Expires")
end
defp is_aws_signed_url(_), do: nil
|> Map.get("X-Amz-Date")
|> Timex.parse("{ISO:Basic:Z}")
- Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))
+ {:ok, Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))}
end
end
expire_time =
Timex.parse!(timestamp, "{ISO:Basic:Z}") |> Timex.to_unix() |> Kernel.+(valid_till)
- assert expire_time == Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl.ttl(metadata, url)
+ assert {:ok, expire_time} == Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl.ttl(metadata, url)
end
test "s3 signed url is parsed and correct ttl is set for rich media" do
defmodule Pleroma.Web.RichMedia.ParserTest do
use ExUnit.Case, async: true
+ alias Pleroma.Web.RichMedia.Parser
+
setup do
Tesla.Mock.mock(fn
%{
%{method: :get, url: "http://example.com/empty"} ->
%Tesla.Env{status: 200, body: "hello"}
+
+ %{method: :get, url: "http://example.com/malformed"} ->
+ %Tesla.Env{status: 200, body: File.read!("test/fixtures/rich_media/malformed-data.html")}
+
+ %{method: :get, url: "http://example.com/error"} ->
+ {:error, :overload}
end)
:ok
end
test "returns error when no metadata present" do
- assert {:error, _} = Pleroma.Web.RichMedia.Parser.parse("http://example.com/empty")
+ assert {:error, _} = Parser.parse("http://example.com/empty")
end
test "doesn't just add a title" do
- assert Pleroma.Web.RichMedia.Parser.parse("http://example.com/non-ogp") ==
+ assert Parser.parse("http://example.com/non-ogp") ==
{:error,
"Found metadata was invalid or incomplete: %{\"url\" => \"http://example.com/non-ogp\"}"}
end
test "parses ogp" do
- assert Pleroma.Web.RichMedia.Parser.parse("http://example.com/ogp") ==
+ assert Parser.parse("http://example.com/ogp") ==
{:ok,
%{
"image" => "http://ia.media-imdb.com/images/rock.jpg",
end
test "falls back to <title> when ogp:title is missing" do
- assert Pleroma.Web.RichMedia.Parser.parse("http://example.com/ogp-missing-title") ==
+ assert Parser.parse("http://example.com/ogp-missing-title") ==
{:ok,
%{
"image" => "http://ia.media-imdb.com/images/rock.jpg",
end
test "parses twitter card" do
- assert Pleroma.Web.RichMedia.Parser.parse("http://example.com/twitter-card") ==
+ assert Parser.parse("http://example.com/twitter-card") ==
{:ok,
%{
"card" => "summary",
end
test "parses OEmbed" do
- assert Pleroma.Web.RichMedia.Parser.parse("http://example.com/oembed") ==
+ assert Parser.parse("http://example.com/oembed") ==
{:ok,
%{
"author_name" => "bees",
end
test "rejects invalid OGP data" do
- assert {:error, _} = Pleroma.Web.RichMedia.Parser.parse("http://example.com/malformed")
+ assert {:error, _} = Parser.parse("http://example.com/malformed")
+ end
+
+ test "returns error if getting page was not successful" do
+ assert {:error, :overload} = Parser.parse("http://example.com/error")
end
end
projects / akkoma / commitdiff