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youtube.lua: debug messages for signature descrambling javascript parsing

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This commit is contained in:
Pierre Ynard 2016-07-17 00:19:15 +02:00
parent f95fda914c
commit ec081ff8c6
1 changed files with 4 additions and 0 deletions
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4
share/lua/playlist/youtube.lua
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@ -107,6 +107,7 @@ function js_descramble( sig, js_url )
-- c&&a.set("signature",br(c));
local descrambler = js_extract( js, "%.set%(\"signature\",(.-)%(", nil )
if not descrambler then
vlc.msg.dbg( "Couldn't extract youtube video URL signature descrambling function name" )
return sig
end
@ -116,12 +117,14 @@ function js_descramble( sig, js_url )
-- Legacy/alternate format
"function "..descrambler.."%([^)]*%){(.-)}" )
if not rules then
vlc.msg.dbg( "Couldn't extract youtube video URL signature descrambling rules" )
return sig
end
-- Get the name of the helper object providing transformation definitions
local helper = string.match( rules, ";(..)%...%(" )
if not helper then
vlc.msg.dbg( "Couldn't extract youtube video URL signature transformation helper name" )
vlc.msg.err( "Couldn't process youtube video URL, please check for updates to this script" )
return sig
end
@ -130,6 +133,7 @@ function js_descramble( sig, js_url )
-- var Fo={TR:function(a){a.reverse()},TU:function(a,b){var c=a[0];a[0]=a[b%a.length];a[b]=c},sH:function(a,b){a.splice(0,b)}};
local transformations = js_extract( js, "[ ,]"..helper.."={(.-)};", nil )
if not transformations then
vlc.msg.dbg( "Couldn't extract youtube video URL signature transformation code" )
return sig
end