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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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16
spec/helpers_spec.cr
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@ -24,25 +24,25 @@ describe "Helpers" do
describe "#produce_channel_search_url" do
it "correctly produces token for searching a specific channel" do
produce_channel_search_url("UCXuqSBlHAE6Xw-yeJA0Tunw", "", 100).should eq("/browse_ajax?continuation=4qmFsgI-EhhVQ1h1cVNCbEhBRTZYdy15ZUpBMFR1bncaIEVnWnpaV0Z5WTJnd0FqZ0JZQUZxQUxnQkFIb0RNVEF3WgA%3D")
produce_channel_search_url("UCXuqSBlHAE6Xw-yeJA0Tunw", "", 100).should eq("/browse_ajax?continuation=4qmFsgI-EhhVQ1h1cVNCbEhBRTZYdy15ZUpBMFR1bncaIEVnWnpaV0Z5WTJnd0FqZ0JZQUZxQUxnQkFIb0RNVEF3WgA%3D&gl=US&hl=en")
produce_channel_search_url("UCXuqSBlHAE6Xw-yeJA0Tunw", "По ожиशुपतिरपि子而時ஸ்றீனி", 0).should eq("/browse_ajax?continuation=4qmFsgJZEhhVQ1h1cVNCbEhBRTZYdy15ZUpBMFR1bncaJEVnWnpaV0Z5WTJnd0FqZ0JZQUZxQUxnQkFIb0JNQSUzRCUzRFoX0J_QviDQvtC20LjgpLbgpYHgpKrgpKTgpL_gpLDgpKrgpL_lrZDogIzmmYLgrrjgr43grrHgr4Dgrqngrr8%3D")
produce_channel_search_url("UCXuqSBlHAE6Xw-yeJA0Tunw", "По ожиशुपतिरपि子而時ஸ்றீனி", 0).should eq("/browse_ajax?continuation=4qmFsgJZEhhVQ1h1cVNCbEhBRTZYdy15ZUpBMFR1bncaJEVnWnpaV0Z5WTJnd0FqZ0JZQUZxQUxnQkFIb0JNQSUzRCUzRFoX0J_QviDQvtC20LjgpLbgpYHgpKrgpKTgpL_gpLDgpKrgpL_lrZDogIzmmYLgrrjgr43grrHgr4Dgrqngrr8%3D&gl=US&hl=en")
end
end
describe "#produce_playlist_url" do
it "correctly produces url for requesting index `x` of a playlist" do
produce_playlist_url("UUCla9fZca4I7KagBtgRGnOw", 0).should eq("/browse_ajax?continuation=4qmFsgIsEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoOZWdaUVZEcERRVUUlM0Q%3D")
produce_playlist_url("UUCla9fZca4I7KagBtgRGnOw", 0).should eq("/browse_ajax?continuation=4qmFsgIsEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoOZWdaUVZEcERRVUUlM0Q%3D&gl=US&hl=en")
produce_playlist_url("UCCla9fZca4I7KagBtgRGnOw", 0).should eq("/browse_ajax?continuation=4qmFsgIsEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoOZWdaUVZEcERRVUUlM0Q%3D")
produce_playlist_url("UCCla9fZca4I7KagBtgRGnOw", 0).should eq("/browse_ajax?continuation=4qmFsgIsEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoOZWdaUVZEcERRVUUlM0Q%3D&gl=US&hl=en")
produce_playlist_url("PLt5AfwLFPxWLNVixpe1w3fi6lE2OTq0ET", 0).should eq("/browse_ajax?continuation=4qmFsgI2EiRWTFBMdDVBZndMRlB4V0xOVml4cGUxdzNmaTZsRTJPVHEwRVQaDmVnWlFWRHBEUVVFJTNE")
produce_playlist_url("PLt5AfwLFPxWLNVixpe1w3fi6lE2OTq0ET", 0).should eq("/browse_ajax?continuation=4qmFsgI2EiRWTFBMdDVBZndMRlB4V0xOVml4cGUxdzNmaTZsRTJPVHEwRVQaDmVnWlFWRHBEUVVFJTNE&gl=US&hl=en")
produce_playlist_url("PLt5AfwLFPxWLNVixpe1w3fi6lE2OTq0ET", 10000).should eq("/browse_ajax?continuation=4qmFsgI0EiRWTFBMdDVBZndMRlB4V0xOVml4cGUxdzNmaTZsRTJPVHEwRVQaDGVnZFFWRHBEU2tKUA%3D%3D")
produce_playlist_url("PLt5AfwLFPxWLNVixpe1w3fi6lE2OTq0ET", 10000).should eq("/browse_ajax?continuation=4qmFsgI0EiRWTFBMdDVBZndMRlB4V0xOVml4cGUxdzNmaTZsRTJPVHEwRVQaDGVnZFFWRHBEU2tKUA%3D%3D&gl=US&hl=en")
produce_playlist_url("PL55713C70BA91BD6E", 0).should eq("/browse_ajax?continuation=4qmFsgImEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoOZWdaUVZEcERRVUUlM0Q%3D")
produce_playlist_url("PL55713C70BA91BD6E", 0).should eq("/browse_ajax?continuation=4qmFsgImEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoOZWdaUVZEcERRVUUlM0Q%3D&gl=US&hl=en")
produce_playlist_url("PL55713C70BA91BD6E", 10000).should eq("/browse_ajax?continuation=4qmFsgIkEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoMZWdkUVZEcERTa0pQ")
produce_playlist_url("PL55713C70BA91BD6E", 10000).should eq("/browse_ajax?continuation=4qmFsgIkEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoMZWdkUVZEcERTa0pQ&gl=US&hl=en")
end
end

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

2
src/invidious/helpers/utils.cr
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@ -282,7 +282,7 @@ def write_var_int(value : Int)
end
end
return bytes
return Slice.new(bytes.to_unsafe, bytes.size)
end
def sha256(text)

43
src/invidious/playlists.cr
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@ -126,32 +126,37 @@ def produce_playlist_url(id, index)
end
ucid = "VL" + id
meta = [0x08_u8] + write_var_int(index)
meta = Slice.new(meta.to_unsafe, meta.size)
meta = Base64.urlsafe_encode(meta, false)
meta = IO::Memory.new
meta.write(Bytes[0x08])
meta.write(write_var_int(index))
meta.rewind
meta = Base64.urlsafe_encode(meta.to_slice, false)
meta = "PT:#{meta}"
wrapped = "\x7a"
wrapped += meta.bytes.size.unsafe_chr
wrapped += meta
continuation = IO::Memory.new
continuation.write(Bytes[0x7a, meta.size])
continuation.print(meta)
wrapped = Base64.urlsafe_encode(wrapped)
meta = URI.escape(wrapped)
continuation.rewind
meta = Base64.urlsafe_encode(continuation.to_slice)
meta = URI.escape(meta)
continuation = "\x12"
continuation += ucid.size.unsafe_chr
continuation += ucid
continuation += "\x1a"
continuation += meta.bytes.size.unsafe_chr
continuation += meta
continuation = IO::Memory.new
continuation.write(Bytes[0x12, ucid.size])
continuation.print(ucid)
continuation.write(Bytes[0x1a, meta.size])
continuation.print(meta)
continuation = continuation.size.to_u8.unsafe_chr + continuation
continuation = "\xe2\xa9\x85\xb2\x02" + continuation
wrapper = IO::Memory.new
wrapper.write(Bytes[0xe2, 0xa9, 0x85, 0xb2, 0x02, continuation.size])
wrapper.print(continuation)
wrapper.rewind
continuation = Base64.urlsafe_encode(continuation)
continuation = URI.escape(continuation)
wrapper = Base64.urlsafe_encode(wrapper.to_slice)
wrapper = URI.escape(wrapper)
url = "/browse_ajax?continuation=#{continuation}"
url = "/browse_ajax?continuation=#{wrapper}&gl=US&hl=en"
return url
end

57
src/invidious/search.cr
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@ -203,36 +203,45 @@ end
def produce_channel_search_url(ucid, query, page)
page = "#{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 = IO::Memory.new
meta.write(Bytes[0x12, 0x06])
meta.print("search")
meta = Base64.urlsafe_encode(meta)
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[0x7a, page.size])
meta.print(page)
meta.rewind
meta = Base64.urlsafe_encode(meta.to_slice)
meta = URI.escape(meta)
continuation = "\x12"
continuation += ucid.size.unsafe_chr
continuation += ucid
continuation += "\x1a"
continuation += meta.size.unsafe_chr
continuation += meta
continuation += "\x5a"
continuation += query.size.unsafe_chr
continuation += query
continuation = IO::Memory.new
continuation.write(Bytes[0x12, ucid.size])
continuation.print(ucid)
continuation = continuation.size.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.write(Bytes[0x5a, query.size])
continuation.print(query)
url = "/browse_ajax?continuation=#{continuation}"
continuation.rewind
continuation = continuation.gets_to_end
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