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Escape function names in signature extractor

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This commit is contained in:
Omar Roth 2019-01-05 15:23:22 -06:00
parent 4ae57cb475
commit 7f8349d4b1
1 changed files with 4 additions and 4 deletions
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8
src/invidious/signatures.cr
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@ -1,15 +1,15 @@
def fetch_decrypt_function(id = "CvFH_6DNRCY") def fetch_decrypt_function(id = "CvFH_6DNRCY")
client = make_client(YT_URL) client = make_client(YT_URL)
document = client.get("/watch?v=#{id}").body document = client.get("/watch?v=#{id}&gl=US&hl=en&disable_polymer=1").body
url = document.match(/src="(?<url>\/yts\/jsbin\/player-.{9}\/en_US\/base.js)"/).not_nil!["url"] url = document.match(/src="(?<url>\/yts\/jsbin\/player_ias-.{9}\/en_US\/base.js)"/).not_nil!["url"]
player = client.get(url).body player = client.get(url).body
function_name = player.match(/^(?<name>[^=]+)=function\(a\){a=a\.split\(""\)/m).not_nil!["name"] function_name = player.match(/^(?<name>[^=]+)=function\(a\){a=a\.split\(""\)/m).not_nil!["name"]
function_body = player.match(/^#{function_name}=function\(a\){(?<body>[^}]+)}/m).not_nil!["body"] function_body = player.match(/^#{Regex.escape(function_name)}=function\(a\){(?<body>[^}]+)}/m).not_nil!["body"]
function_body = function_body.split(";")[1..-2] function_body = function_body.split(";")[1..-2]
var_name = function_body[0][0, 2] var_name = function_body[0][0, 2]
var_body = player.delete("\n").match(/var #{var_name}={(?<body>(.*?))};/).not_nil!["body"] var_body = player.delete("\n").match(/var #{Regex.escape(var_name)}={(?<body>(.*?))};/).not_nil!["body"]
operations = {} of String => String operations = {} of String => String
var_body.split("},").each do |operation| var_body.split("},").each do |operation|