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Use IO::Memory for creating continuation tokens

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This commit is contained in:
Omar Roth
2019-02-04 15:17:10 -06:00
parent ed8a9af355
commit 276662a147
5 changed files with 101 additions and 79 deletions
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62
src/invidious/channels.cr
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@@ -202,50 +202,58 @@ def produce_channel_videos_url(ucid, page = 1, auto_generated = nil, sort_by = "
timestamp = seed - (page - 1).months
page = "#{timestamp.to_unix}"
switch = "\x36"
switch = 0x36
else
page = "#{page}"
switch = "\x00"
switch = 0x00
end
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 = IO::Memory.new
meta.write(Bytes[0x12, 0x06])
meta.print("videos")
meta.write(Bytes[0x30, 0x02])
meta.write(Bytes[0x38, 0x01])
meta.write(Bytes[0x60, 0x01])
meta.write(Bytes[0x6a, 0x00])
meta.write(Bytes[0xb8, 0x01, 0x00])
meta.write(Bytes[0x20, switch, 0x7a, page.size])
meta.print(page)
case sort_by
when "newest"
# Empty tags can be omitted
# meta += "\x18\x00"
# meta.write(Bytes[0x18,0x00])
when "popular"
meta += "\x18\x01"
meta.write(Bytes[0x18, 0x01])
when "oldest"
meta += "\x18\x02"
meta.write(Bytes[0x18, 0x02])
end
meta = Base64.urlsafe_encode(meta)
meta.rewind
meta = Base64.urlsafe_encode(meta.to_slice)
meta = URI.escape(meta)
continuation = "\x12"
continuation += ucid.size.to_u8.unsafe_chr
continuation += ucid
continuation += "\x1a"
continuation += meta.size.to_u8.unsafe_chr
continuation += meta
continuation = IO::Memory.new
continuation.write(Bytes[0x12, ucid.size])
continuation.print(ucid)
continuation = continuation.size.to_u8.unsafe_chr + continuation
continuation = "\xe2\xa9\x85\xb2\x02" + continuation
continuation.write(Bytes[0x1a, meta.size])
continuation.print(meta)
continuation = Base64.urlsafe_encode(continuation)
continuation = URI.escape(continuation)
continuation.rewind
continuation = continuation.gets_to_end
url = "/browse_ajax?continuation=#{continuation}&gl=US&hl=en"
wrapper = IO::Memory.new
wrapper.write(Bytes[0xe2, 0xa9, 0x85, 0xb2, 0x02, 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