Add 404 status code on all possible endpoints

src/invidious/channels/about.cr

@@ -31,7 +31,12 @@ def get_about_info(ucid, locale) : AboutChannel
   end
 
   if initdata.dig?("alerts", 0, "alertRenderer", "type") == "ERROR"
-    raise InfoException.new(initdata["alerts"][0]["alertRenderer"]["text"]["simpleText"].as_s)
+    error_message = initdata["alerts"][0]["alertRenderer"]["text"]["simpleText"].as_s
+    if error_message == "This channel does not exist."
+      raise NotFoundException.new(error_message)
+    else
+      raise InfoException.new(error_message)
+    end
   end
 
   if browse_endpoint = initdata["onResponseReceivedActions"]?.try &.[0]?.try &.["navigateAction"]?.try &.["endpoint"]?.try &.["browseEndpoint"]?

src/invidious/channels/community.cr

@@ -6,7 +6,7 @@ def fetch_channel_community(ucid, continuation, locale, format, thin_mode)
   end
 
   if response.status_code != 200
-    raise InfoException.new("This channel does not exist.")
+    raise NotFoundException.new("This channel does not exist.")
   end
 
   ucid = response.body.match(/https:\/\/www.youtube.com\/channel\/(?<ucid>UC[a-zA-Z0-9_-]{22})/).not_nil!["ucid"]
@@ -49,8 +49,12 @@ def fetch_channel_community(ucid, continuation, locale, format, thin_mode)
     error_message = (message["text"]["simpleText"]? ||
                      message["text"]["runs"]?.try &.[0]?.try &.["text"]?)
       .try &.as_s || ""
+    if error_message == "This channel does not exist."
+      raise NotFoundException.new(error_message)
+    else
       raise InfoException.new(error_message)
     end
+  end
 
   response = JSON.build do |json|
     json.object do

src/invidious/comments.cr

@@ -95,7 +95,7 @@ def fetch_youtube_comments(id, cursor, format, locale, thin_mode, region, sort_b
     contents = body["contents"]?
     header = body["header"]?
   else
-    raise InfoException.new("Could not fetch comments")
+    raise NotFoundException.new("Comments not found.")
   end
 
   if !contents
@@ -290,7 +290,7 @@ def fetch_reddit_comments(id, sort_by = "confidence")
 
     thread = result[0].data.as(RedditListing).children[0].data.as(RedditLink)
   else
-    raise InfoException.new("Could not fetch comments")
+    raise NotFoundException.new("Comments not found.")
   end
 
   client.close

src/invidious/exceptions.cr

@@ -18,3 +18,7 @@ class BrokenTubeException < Exception
     return "Missing JSON element \"#{@element}\""
   end
 end
+
+# Exception used to hold the bogus UCID during a channel search.
+class NotFoundException < InfoException
+end

src/invidious/playlists.cr

@@ -317,7 +317,7 @@ def get_playlist(plid : String)
     if playlist = Invidious::Database::Playlists.select(id: plid)
       return playlist
     else
-      raise InfoException.new("Playlist does not exist.")
+      raise NotFoundException.new("Playlist does not exist.")
     end
   else
     return fetch_playlist(plid)

src/invidious/routes/api/manifest.cr

@@ -16,6 +16,8 @@ module Invidious::Routes::API::Manifest
       video = get_video(id, region: region)
     rescue ex : VideoRedirect
       return env.redirect env.request.resource.gsub(id, ex.video_id)
+    rescue ex : NotFoundException
+      haltf env, status_code: 404
     rescue ex
       haltf env, status_code: 403
     end

src/invidious/routes/api/v1/authenticated.cr

@@ -237,6 +237,8 @@ module Invidious::Routes::API::V1::Authenticated
 
     begin
       video = get_video(video_id)
+    rescue ex : NotFoundException
+      return error_json(404, ex)
     rescue ex
       return error_json(500, ex)
     end

src/invidious/routes/api/v1/channels.cr

@@ -13,6 +13,8 @@ module Invidious::Routes::API::V1::Channels
     rescue ex : ChannelRedirect
       env.response.headers["Location"] = env.request.resource.gsub(ucid, ex.channel_id)
       return error_json(302, "Channel is unavailable", {"authorId" => ex.channel_id})
+    rescue ex : NotFoundException
+      return error_json(404, ex)
     rescue ex
       return error_json(500, ex)
     end
@@ -170,6 +172,8 @@ module Invidious::Routes::API::V1::Channels
     rescue ex : ChannelRedirect
       env.response.headers["Location"] = env.request.resource.gsub(ucid, ex.channel_id)
       return error_json(302, "Channel is unavailable", {"authorId" => ex.channel_id})
+    rescue ex : NotFoundException
+      return error_json(404, ex)
     rescue ex
       return error_json(500, ex)
     end
@@ -205,6 +209,8 @@ module Invidious::Routes::API::V1::Channels
     rescue ex : ChannelRedirect
       env.response.headers["Location"] = env.request.resource.gsub(ucid, ex.channel_id)
       return error_json(302, "Channel is unavailable", {"authorId" => ex.channel_id})
+    rescue ex : NotFoundException
+      return error_json(404, ex)
     rescue ex
       return error_json(500, ex)
     end

src/invidious/routes/api/v1/videos.cr

@@ -12,6 +12,8 @@ module Invidious::Routes::API::V1::Videos
     rescue ex : VideoRedirect
       env.response.headers["Location"] = env.request.resource.gsub(id, ex.video_id)
       return error_json(302, "Video is unavailable", {"videoId" => ex.video_id})
+    rescue ex : NotFoundException
+      return error_json(404, ex)
     rescue ex
       return error_json(500, ex)
     end
@@ -42,6 +44,8 @@ module Invidious::Routes::API::V1::Videos
     rescue ex : VideoRedirect
       env.response.headers["Location"] = env.request.resource.gsub(id, ex.video_id)
       return error_json(302, "Video is unavailable", {"videoId" => ex.video_id})
+    rescue ex : NotFoundException
+      haltf env, 404
     rescue ex
       haltf env, 500
     end
@@ -167,6 +171,8 @@ module Invidious::Routes::API::V1::Videos
     rescue ex : VideoRedirect
       env.response.headers["Location"] = env.request.resource.gsub(id, ex.video_id)
       return error_json(302, "Video is unavailable", {"videoId" => ex.video_id})
+    rescue ex : NotFoundException
+      haltf env, 404
     rescue ex
       haltf env, 500
     end
@@ -324,6 +330,8 @@ module Invidious::Routes::API::V1::Videos
 
       begin
         comments = fetch_youtube_comments(id, continuation, format, locale, thin_mode, region, sort_by: sort_by)
+      rescue ex : NotFoundException
+        return error_json(404, ex)
       rescue ex
         return error_json(500, ex)
       end

src/invidious/routes/channels.cr

@@ -85,6 +85,9 @@ module Invidious::Routes::Channels
     rescue ex : InfoException
       env.response.status_code = 500
       error_message = ex.message
+    rescue ex : NotFoundException
+      env.response.status_code = 404
+      error_message = ex.message
     rescue ex
       return error_template(500, ex)
     end
@@ -118,7 +121,7 @@ module Invidious::Routes::Channels
       resolved_url = YoutubeAPI.resolve_url("https://youtube.com#{env.request.path}#{yt_url_params.size > 0 ? "?#{yt_url_params}" : ""}")
       ucid = resolved_url["endpoint"]["browseEndpoint"]["browseId"]
     rescue ex : InfoException | KeyError
-      raise InfoException.new(translate(locale, "This channel does not exist."))
+      return error_template(404, translate(locale, "This channel does not exist."))
     end
 
     selected_tab = env.request.path.split("/")[-1]
@@ -141,7 +144,7 @@ module Invidious::Routes::Channels
 
     user = env.params.query["user"]?
     if !user
-      raise InfoException.new("This channel does not exist.")
+      return error_template(404, "This channel does not exist.")
     else
       env.redirect "/user/#{user}#{uri_params}"
     end
@@ -197,6 +200,8 @@ module Invidious::Routes::Channels
       channel = get_about_info(ucid, locale)
     rescue ex : ChannelRedirect
       return env.redirect env.request.resource.gsub(ucid, ex.channel_id)
+    rescue ex : NotFoundException
+      return error_template(404, ex)
     rescue ex
       return error_template(500, ex)
     end

src/invidious/routes/embed.cr

@@ -7,6 +7,8 @@ module Invidious::Routes::Embed
         playlist = get_playlist(plid)
         offset = env.params.query["index"]?.try &.to_i? || 0
         videos = get_playlist_videos(playlist, offset: offset)
+      rescue ex : NotFoundException
+        return error_template(404, ex)
       rescue ex
         return error_template(500, ex)
       end
@@ -60,6 +62,8 @@ module Invidious::Routes::Embed
           playlist = get_playlist(plid)
           offset = env.params.query["index"]?.try &.to_i? || 0
           videos = get_playlist_videos(playlist, offset: offset)
+        rescue ex : NotFoundException
+          return error_template(404, ex)
         rescue ex
           return error_template(500, ex)
         end
@@ -119,6 +123,8 @@ module Invidious::Routes::Embed
       video = get_video(id, region: params.region)
     rescue ex : VideoRedirect
       return env.redirect env.request.resource.gsub(id, ex.video_id)
+    rescue ex : NotFoundException
+      return error_template(404, ex)
     rescue ex
       return error_template(500, ex)
     end

src/invidious/routes/feeds.cr

@@ -150,6 +150,8 @@ module Invidious::Routes::Feeds
       channel = get_about_info(ucid, locale)
     rescue ex : ChannelRedirect
       return env.redirect env.request.resource.gsub(ucid, ex.channel_id)
+    rescue ex : NotFoundException
+      return error_atom(404, ex)
     rescue ex
       return error_atom(500, ex)
     end

src/invidious/routes/playlists.cr

@@ -66,7 +66,13 @@ module Invidious::Routes::Playlists
     user = user.as(User)
 
     playlist_id = env.params.query["list"]
+    begin
       playlist = get_playlist(playlist_id)
+    rescue ex : NotFoundException
+      return error_template(404, ex)
+    rescue ex
+      return error_template(500, ex)
+    end
     subscribe_playlist(user, playlist)
 
     env.redirect "/playlist?list=#{playlist.id}"
@@ -304,6 +310,8 @@ module Invidious::Routes::Playlists
       playlist_id = env.params.query["playlist_id"]
       playlist = get_playlist(playlist_id).as(InvidiousPlaylist)
       raise "Invalid user" if playlist.author != user.email
+    rescue ex : NotFoundException
+      return error_json(404, ex)
     rescue ex
       if redirect
         return error_template(400, ex)
@@ -334,6 +342,8 @@ module Invidious::Routes::Playlists
 
       begin
         video = get_video(video_id)
+      rescue ex : NotFoundException
+        return error_json(404, ex)
       rescue ex
         if redirect
           return error_template(500, ex)
@@ -394,6 +404,8 @@ module Invidious::Routes::Playlists
 
     begin
       playlist = get_playlist(plid)
+    rescue ex : NotFoundException
+      return error_template(404, ex)
     rescue ex
       return error_template(500, ex)
     end

src/invidious/routes/video_playback.cr

@@ -265,7 +265,13 @@ module Invidious::Routes::VideoPlayback
       return error_template(403, "Administrator has disabled this endpoint.")
     end
 
+    begin
       video = get_video(id, region: region)
+    rescue ex : NotFoundException
+      return error_template(404, ex)
+    rescue ex
+      return error_template(500, ex)
+    end
 
     fmt = video.fmt_stream.find(nil) { |f| f["itag"].as_i == itag } || video.adaptive_fmts.find(nil) { |f| f["itag"].as_i == itag }
     url = fmt.try &.["url"]?.try &.as_s

src/invidious/routes/watch.cr

@@ -63,6 +63,9 @@ module Invidious::Routes::Watch
       video = get_video(id, region: params.region)
     rescue ex : VideoRedirect
       return env.redirect env.request.resource.gsub(id, ex.video_id)
+    rescue ex : NotFoundException
+      LOGGER.error("get_video not found: #{id} : #{ex.message}")
+      return error_template(404, ex)
     rescue ex
       LOGGER.error("get_video: #{id} : #{ex.message}")
       return error_template(500, ex)

src/invidious/videos.cr

@@ -1159,8 +1159,12 @@ def fetch_video(id, region)
   end
 
   if reason = info["reason"]?
+    if reason == "Video unavailable"
+      raise NotFoundException.new(reason.as_s || "")
+    else
       raise InfoException.new(reason.as_s || "")
     end
+  end
 
   video = Video.new({
     id:      id,