Merge branch 'feature/useragent-override' into 'develop'

Add ability to set a custom user-agent string

See merge request pleroma/pleroma!2009

config/config.exs

@@ -209,6 +209,7 @@ config :tesla, adapter: Tesla.Adapter.Hackney
 config :pleroma, :http,
   proxy_url: nil,
   send_user_agent: true,
+  user_agent: :default,
   adapter: [
     ssl_options: [
       # Workaround for remote server certificate chain issues

docs/configuration/cheatsheet.md

@@ -348,7 +348,17 @@ Available caches:
 * `:activity_pub` - activity pub routes (except question activities). Defaults to `nil` (no expiration).
 * `:activity_pub_question` - activity pub routes (question activities). Defaults to `30_000` (30 seconds).
 
-## :hackney_pools
+## HTTP client
+
+### :http
+
+* `proxy_url`: an upstream proxy to fetch posts and/or media with, (default: `nil`)
+* `send_user_agent`: should we include a user agent with HTTP requests? (default: `true`)
+* `user_agent`: what user agent should  we use? (default: `:default`), must be string or `:default`
+* `adapter`: array of hackney options
+
+
+### :hackney_pools
 
 Advanced. Tweaks Hackney (http client) connections pools.
 

lib/pleroma/application.ex

@@ -17,8 +17,14 @@ defmodule Pleroma.Application do
   def repository, do: @repository
 
   def user_agent do
-    info = "#{Pleroma.Web.base_url()} <#{Pleroma.Config.get([:instance, :email], "")}>"
+    case Pleroma.Config.get([:http, :user_agent], :default) do
-    named_version() <> "; " <> info
+      :default ->
+        info = "#{Pleroma.Web.base_url()} <#{Pleroma.Config.get([:instance, :email], "")}>"
+        named_version() <> "; " <> info
+
+      custom ->
+        custom
+    end
   end
 
   # See http://elixir-lang.org/docs/stable/elixir/Application.html

test/http/request_builder_test.exs

@@ -16,11 +16,21 @@ defmodule Pleroma.HTTP.RequestBuilderTest do
 
     test "send pleroma user agent" do
       Pleroma.Config.put([:http, :send_user_agent], true)
+      Pleroma.Config.put([:http, :user_agent], :default)
 
       assert RequestBuilder.headers(%{}, []) == %{
                headers: [{"User-Agent", Pleroma.Application.user_agent()}]
              }
     end
+
+    test "send custom user agent" do
+      Pleroma.Config.put([:http, :send_user_agent], true)
+      Pleroma.Config.put([:http, :user_agent], "totally-not-pleroma")
+
+      assert RequestBuilder.headers(%{}, []) == %{
+               headers: [{"User-Agent", "totally-not-pleroma"}]
+             }
+    end
   end
 
   describe "add_optional_params/3" do