Korbs/4get-patches
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lolcat 2024-04-21 19:31:56 -04:00
parent 9e18327df6
commit 130358a9e0
16 changed files with 1385 additions and 457 deletions
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84
lib/backend.php
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@ -93,31 +93,31 @@ class backend{
*/
public function store($payload, $page, $proxy){
$page = $page[0];
$password = random_bytes(256); // 2048 bit
$salt = random_bytes(16);
$key = hash_pbkdf2("sha512", $password, $salt, 20000, 32, true);
$iv =
random_bytes(
openssl_cipher_iv_length("aes-256-gcm")
);
$tag = "";
$out = openssl_encrypt($payload, "aes-256-gcm", $key, OPENSSL_RAW_DATA, $iv, $tag, "", 16);
$key = sodium_crypto_secretbox_keygen();
$nonce = random_bytes(SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
$requestid = apcu_inc("requestid");
apcu_store(
$page . "." .
$this->scraper .
$page[0] . "." . // first letter of page name
$this->scraper . // scraper name
$requestid,
gzdeflate($proxy . "," . $salt.$iv.$out.$tag),
900 // cache information for 15 minutes blaze it
[
$nonce,
$proxy,
// compress and encrypt
sodium_crypto_secretbox(
gzdeflate($payload),
$nonce,
$key
)
],
900 // cache information for 15 minutes
);
return
$this->scraper . $requestid . "." .
rtrim(strtr(base64_encode($password), '+/', '-_'), '=');
rtrim(strtr(base64_encode($key), '+/', '-_'), '=');
}
public function get($npt, $page){
@ -137,7 +137,7 @@ class backend{
if($payload === false){
throw new Exception("The nextPageToken is invalid or has expired!");
throw new Exception("The next page token is invalid or has expired!");
}
$key =
@ -150,47 +150,27 @@ class backend{
)
);
$payload = gzinflate($payload);
// get proxy
[
$proxy,
$payload
] = explode(",", $payload, 2);
$key =
hash_pbkdf2(
"sha512",
$key,
substr($payload, 0, 16), // salt
20000,
32,
true
);
$ivlen = openssl_cipher_iv_length("aes-256-gcm");
$payload =
openssl_decrypt(
substr(
$payload,
16 + $ivlen,
-16
),
"aes-256-gcm",
$key,
OPENSSL_RAW_DATA,
substr($payload, 16, $ivlen),
substr($payload, -16)
// decrypt and decompress data
$payload[2] =
gzinflate(
sodium_crypto_secretbox_open(
$payload[2], // data
$payload[0], // nonce
$key
)
);
if($payload === false){
if($payload[2] === false){
throw new Exception("The nextPageToken is invalid or has expired!");
throw new Exception("The next page token is invalid or has expired!");
}
// remove the key after using
// remove the key after using successfully
apcu_delete($apcu);
return [$payload, $proxy];
return [
$payload[2], // data
$payload[1] // proxy
];
}
}