Refactor protocol buffers

src/invidious.cr

@@ -455,7 +455,7 @@ get "/search" do |env|
       date = value
     when "duration"
       duration = value
-    when "features"
+    when "feature", "features"
       features = value.split(",")
     when "sort"
       sort = value
@@ -478,8 +478,14 @@ get "/search" do |env|
     ) v_search WHERE v_search.document @@ plainto_tsquery($1) LIMIT 20 OFFSET $2;", [search_query, (page - 1) * 20] + ucids, as: ChannelVideo)
     count = videos.size
   else
-    search_params = build_search_params(sort: sort, date: date, content_type: "video",
+    begin
+      search_params = produce_search_params(sort: sort, date: date, content_type: "video",
         duration: duration, features: features)
+    rescue ex
+      error_message = ex.message
+      next templated "error"
+    end
+
     count, videos = search(search_query, page, search_params).as(Tuple)
   end
 
@@ -2643,7 +2649,7 @@ get "/api/v1/search" do |env|
   env.response.content_type = "application/json"
 
   begin
-    search_params = build_search_params(sort_by, date, content_type, duration, features)
+    search_params = produce_search_params(sort_by, date, content_type, duration, features)
   rescue ex
     next JSON.build do |json|
       json.object do

src/invidious/channels.cr

@@ -145,10 +145,16 @@ def produce_channel_videos_url(ucid, page = 1, auto_generated = nil)
     switch = "\x00"
   end
 
-  meta = "\x12\x06videos #{switch}\x30\x02\x38\x01\x60\x01\x6a\x00\x7a"
+  meta = "\x12\x06videos"
+  meta += "\x30\x02"
+  meta += "\x38\x01"
+  meta += "\x60\x01"
+  meta += "\x6a\x00"
+  meta += "\xb8\x01\x00"
+  meta += "\x20#{switch}"
+  meta += "\x7a"
   meta += page.size.to_u8.unsafe_chr
   meta += page
-  meta += "\xb8\x01\x00"
 
   meta = Base64.urlsafe_encode(meta)
   meta = URI.escape(meta)

src/invidious/playlists.cr

@@ -88,28 +88,29 @@ def produce_playlist_url(id, index)
   end
   ucid = "VL" + id
 
-  continuation = [0x08_u8] + write_var_int(index)
-  slice = continuation.to_unsafe.to_slice(continuation.size)
-  slice = Base64.urlsafe_encode(slice, false)
+  meta = "\x08#{write_var_int(index).join}"
+  meta = Base64.urlsafe_encode(meta, false)
+  meta = "PT:#{meta}"
 
-  # Inner Base64
-  continuation = "PT:" + slice
-  continuation = [0x7a_u8, continuation.bytes.size.to_u8] + continuation.bytes
-  slice = continuation.to_unsafe.to_slice(continuation.size)
-  slice = Base64.urlsafe_encode(slice)
-  slice = URI.escape(slice)
+  wrapped = "\x7a"
+  wrapped += meta.bytes.size.unsafe_chr
+  wrapped += meta
 
-  # Outer Base64
-  continuation = [0x1a_u8, slice.bytes.size.to_u8] + slice.bytes
-  continuation = ucid.bytes + continuation
-  continuation = [0x12_u8, ucid.size.to_u8] + continuation
-  continuation = [0xe2_u8, 0xa9_u8, 0x85_u8, 0xb2_u8, 2_u8, continuation.size.to_u8] + continuation
+  wrapped = Base64.urlsafe_encode(wrapped)
+  meta = URI.escape(wrapped)
 
-  # Wrap bytes
-  slice = continuation.to_unsafe.to_slice(continuation.size)
-  slice = Base64.urlsafe_encode(slice)
-  slice = URI.escape(slice)
-  continuation = slice
+  continuation = "\x12"
+  continuation += ucid.size.unsafe_chr
+  continuation += ucid
+  continuation += "\x1a"
+  continuation += meta.bytes.size.unsafe_chr
+  continuation += meta
+
+  continuation = continuation.size.to_u8.unsafe_chr + continuation
+  continuation = "\xe2\xa9\x85\xb2\x02" + continuation
+
+  continuation = Base64.urlsafe_encode(continuation)
+  continuation = URI.escape(continuation)
 
   url = "/browse_ajax?action_continuation=1&continuation=#{continuation}"
 

src/invidious/search.cr

@@ -49,7 +49,7 @@ def channel_search(query, page, channel)
   return count, videos
 end
 
-def search(query, page = 1, search_params = build_search_params(content_type: "video"))
+def search(query, page = 1, search_params = produce_search_params(content_type: "video"))
   client = make_client(YT_URL)
   if query.empty?
     return {0, [] of SearchVideo}
@@ -67,7 +67,7 @@ def search(query, page = 1, search_params = build_search_params(content_type: "v
   return {nodeset.size, videos}
 end
 
-def build_search_params(sort : String = "relevance", date : String = "", content_type : String = "",
+def produce_search_params(sort : String = "relevance", date : String = "", content_type : String = "",
                           duration : String = "", features : Array(String) = [] of String)
   head = "\x08"
   head += case sort
@@ -151,7 +151,7 @@ def build_search_params(sort : String = "relevance", date : String = "", content
   end
 
   if body.size > 0
-    token = head + "\x12" + body.size.to_u8.unsafe_chr + body
+    token = head + "\x12" + body.size.unsafe_chr + body
   else
     token = head
   end
@@ -165,25 +165,30 @@ end
 def produce_channel_search_url(ucid, query, page)
   page = "#{page}"
 
-  meta = "\x12\x06search0\x02\x38\x01\x60\x01\x6a\x00\x7a"
-  meta += page.size.to_u8.unsafe_chr
-  meta += page
+  meta = "\x12\x06search"
+  meta += "\x30\x02"
+  meta += "\x38\x01"
+  meta += "\x60\x01"
+  meta += "\x6a\x00"
   meta += "\xb8\x01\x00"
+  meta += "\x7a"
+  meta += page.size.unsafe_chr
+  meta += page
 
   meta = Base64.urlsafe_encode(meta)
   meta = URI.escape(meta)
 
   continuation = "\x12"
-  continuation += ucid.size.to_u8.unsafe_chr
+  continuation += ucid.size.unsafe_chr
   continuation += ucid
   continuation += "\x1a"
-  continuation += meta.size.to_u8.unsafe_chr
+  continuation += meta.size.unsafe_chr
   continuation += meta
   continuation += "\x5a"
-  continuation += query.size.to_u8.unsafe_chr
+  continuation += query.size.unsafe_chr
   continuation += query
 
-  continuation = continuation.size.to_u8.unsafe_chr + continuation
+  continuation = continuation.size.unsafe_chr + continuation
   continuation = "\xe2\xa9\x85\xb2\x02" + continuation
 
   continuation = Base64.urlsafe_encode(continuation)