Add produce_channel_playlists_url

This commit is contained in:
Omar Roth 2019-02-09 10:15:14 -06:00
parent 3cce74d364
commit 7a9ef0d664
4 changed files with 121 additions and 9 deletions

View file

@ -16,9 +16,9 @@ describe "Helpers" do
produce_channel_videos_url(ucid: "UCXuqSBlHAE6Xw-yeJA0Tunw", page: 20).should eq("/browse_ajax?continuation=4qmFsgJEEhhVQ1h1cVNCbEhBRTZYdy15ZUpBMFR1bncaKEVnWjJhV1JsYjNNd0FqZ0JZQUZxQUxnQkFDQUFlZ0l5TUElM0QlM0Q%3D&gl=US&hl=en") produce_channel_videos_url(ucid: "UCXuqSBlHAE6Xw-yeJA0Tunw", page: 20).should eq("/browse_ajax?continuation=4qmFsgJEEhhVQ1h1cVNCbEhBRTZYdy15ZUpBMFR1bncaKEVnWjJhV1JsYjNNd0FqZ0JZQUZxQUxnQkFDQUFlZ0l5TUElM0QlM0Q%3D&gl=US&hl=en")
produce_channel_videos_url(ucid: "UC-9-kyTW8ZkZNDHQJ6FgpwQ", auto_generated: true).should eq("/browse_ajax?continuation=4qmFsgJIEhhVQy05LWt5VFc4WmtaTkRIUUo2Rmdwd1EaLEVnWjJhV1JsYjNNd0FqZ0JZQUZxQUxnQkFDQTJlZ294TlRRNU5qQXpOelE1&gl=US&hl=en") produce_channel_videos_url(ucid: "UC-9-kyTW8ZkZNDHQJ6FgpwQ", auto_generated: true).should eq("/browse_ajax?continuation=4qmFsgJIEhhVQy05LWt5VFc4WmtaTkRIUUo2Rmdwd1EaLEVnWjJhV1JsYjNNd0FqZ0JZQUZxQUxnQkFDQTJlZ294TlRVeU1ESXlPVFE1&gl=US&hl=en")
produce_channel_videos_url(ucid: "UC-9-kyTW8ZkZNDHQJ6FgpwQ", page: 20, auto_generated: true, sort_by: "popular").should eq("/browse_ajax?continuation=4qmFsgJOEhhVQy05LWt5VFc4WmtaTkRIUUo2Rmdwd1EaMkVnWjJhV1JsYjNNd0FqZ0JZQUZxQUxnQkFDQTJlZ294TkRrNU5Ea3hOelE1R0FFJTNE&gl=US&hl=en") produce_channel_videos_url(ucid: "UC-9-kyTW8ZkZNDHQJ6FgpwQ", page: 20, auto_generated: true, sort_by: "popular").should eq("/browse_ajax?continuation=4qmFsgJOEhhVQy05LWt5VFc4WmtaTkRIUUo2Rmdwd1EaMkVnWjJhV1JsYjNNd0FqZ0JZQUZxQUxnQkFDQTJlZ294TlRBeU1UY3dNVFE1R0FFJTNE&gl=US&hl=en")
end end
end end

View file

@ -218,7 +218,8 @@ def produce_channel_videos_url(ucid, page = 1, auto_generated = nil, sort_by = "
meta.write(Bytes[0x6a, 0x00]) meta.write(Bytes[0x6a, 0x00])
meta.write(Bytes[0xb8, 0x01, 0x00]) meta.write(Bytes[0xb8, 0x01, 0x00])
meta.write(Bytes[0x20, switch, 0x7a, page.size]) meta.write(Bytes[0x20, switch])
meta.write(Bytes[0x7a, page.size])
meta.print(page) meta.print(page)
case sort_by case sort_by

View file

@ -240,21 +240,21 @@ def get_referer(env, fallback = "/")
end end
def read_var_int(bytes) def read_var_int(bytes)
numRead = 0 num_read = 0
result = 0 result = 0
read = bytes[numRead] read = bytes[num_read]
if bytes.size == 1 if bytes.size == 1
result = bytes[0].to_i32 result = bytes[0].to_i32
else else
while ((read & 0b10000000) != 0) while ((read & 0b10000000) != 0)
read = bytes[numRead].to_u64 read = bytes[num_read].to_u64
value = (read & 0b01111111) value = (read & 0b01111111)
result |= (value << (7 * numRead)) result |= (value << (7 * num_read))
numRead += 1 num_read += 1
if numRead > 5 if num_read > 5
raise "VarInt is too big" raise "VarInt is too big"
end end
end end

View file

@ -161,6 +161,117 @@ def produce_playlist_url(id, index)
return url return url
end end
def produce_channel_playlists_url(ucid, cursor, sort = "newest")
cursor = Base64.urlsafe_encode(cursor, false)
meta = IO::Memory.new
meta.write(Bytes[0x12, 0x09])
meta.print("playlists")
# TODO: Look at 0x01, 0x00
case sort
when "oldest", "oldest_created"
meta.write(Bytes[0x18, 0x02])
when "newest", "newest_created"
meta.write(Bytes[0x18, 0x03])
when "last", "last_added"
meta.write(Bytes[0x18, 0x04])
end
meta.write(Bytes[0x20, 0x01])
meta.write(Bytes[0x30, 0x02])
meta.write(Bytes[0x38, 0x01])
meta.write(Bytes[0x60, 0x01])
meta.write(Bytes[0x6a, 0x00])
meta.write(Bytes[0x7a, cursor.size])
meta.print(cursor)
meta.write(Bytes[0xb8, 0x01, 0x00])
meta.rewind
meta = Base64.urlsafe_encode(meta.to_slice)
meta = URI.escape(meta)
continuation = IO::Memory.new
continuation.write(Bytes[0x12, ucid.size])
continuation.print(ucid)
continuation.write(Bytes[0x1a])
continuation.write(write_var_int(meta.size))
continuation.print(meta)
continuation.rewind
continuation = continuation.gets_to_end
wrapper = IO::Memory.new
wrapper.write(Bytes[0xe2, 0xa9, 0x85, 0xb2, 0x02])
wrapper.write(write_var_int(continuation.size))
wrapper.print(continuation)
wrapper.rewind
wrapper = Base64.urlsafe_encode(wrapper.to_slice)
wrapper = URI.escape(wrapper)
url = "/browse_ajax?continuation=#{wrapper}&gl=US&hl=en"
return url
end
def extract_channel_playlists_cursor(url)
wrapper = HTTP::Params.parse(URI.parse(url).query.not_nil!)["continuation"]
wrapper = URI.unescape(wrapper)
wrapper = Base64.decode(wrapper)
# 0xe2 0xa9 0x85 0xb2 0x02
wrapper += 5
continuation_size = read_var_int(wrapper[0, 4])
wrapper += write_var_int(continuation_size).size
continuation = wrapper[0, continuation_size]
# 0x12
continuation += 1
ucid_size = continuation[0]
continuation += 1
ucid = continuation[0, ucid_size]
continuation += ucid_size
# 0x1a
continuation += 1
meta_size = read_var_int(continuation[0, 4])
continuation += write_var_int(meta_size).size
meta = continuation[0, meta_size]
continuation += meta_size
meta = String.new(meta)
meta = URI.unescape(meta)
meta = Base64.decode(meta)
# 0x12 0x09 playlists
meta += 11
until meta[0] == 0x7a
tag = read_var_int(meta[0, 4])
meta += write_var_int(tag).size
value = meta[0]
meta += 1
end
# 0x7a
meta += 1
cursor_size = meta[0]
meta += 1
cursor = meta[0, cursor_size]
cursor = String.new(cursor)
cursor = URI.unescape(cursor)
cursor = Base64.decode_string(cursor)
return cursor
end
def fetch_playlist(plid, locale) def fetch_playlist(plid, locale)
client = make_client(YT_URL) client = make_client(YT_URL)