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Documentation, format class, no modification. (#7629)

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frytimo
2025-11-19 12:48:36 -04:00
committed by GitHub
parent 0ea256fce8
commit 34821bed7e
36 changed files with 12982 additions and 11551 deletions
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73
resources/classes/google_authenticator.php
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@@ -25,61 +25,98 @@ class google_authenticator {
self::$PIN_MODULO = pow(10, self::$PASS_CODE_LENGTH);
}
public function checkCode($secret,$code) {
/**
* Checks if the provided code is valid based on the secret and time.
*
* @param string $secret The secret to verify against.
* @param string $code The code to check for validity.
*
* @return bool True if the code is valid, false otherwise.
*/
public function checkCode($secret, $code) {
$time = floor(time() / 30);
for ( $i = -1; $i <= 1; $i++) {
if ($this->getCode($secret,$time + $i) == $code) {
for ($i = -1; $i <= 1; $i++) {
if ($this->getCode($secret, $time + $i) == $code) {
return true;
}
}
return false;
}
public function getCode($secret,$time = null) {
/**
* Generates a PIN code based on the provided secret and time.
*
* @param string $secret The secret to use for generating the code.
* @param int|null $time The current time in seconds since the Unix epoch. Defaults to the current time divided
* by 30.
*
* @return string A six-digit PIN code.
*/
public function getCode($secret, $time = null) {
if (!$time) {
$time = floor(time() / 30);
}
$base32 = new base2n(5, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567', TRUE, TRUE);
$base32 = new base2n(5, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567', true, true);
$secret = $base32->decode($secret);
$time = pack("N", $time);
$time = str_pad($time,8, chr(0), STR_PAD_LEFT);
$time = str_pad($time, 8, chr(0), STR_PAD_LEFT);
$hash = hash_hmac('sha1',$time,$secret,true);
$offset = ord(substr($hash,-1));
$hash = hash_hmac('sha1', $time, $secret, true);
$offset = ord(substr($hash, -1));
$offset = $offset & 0xF;
$truncatedHash = self::hashToInt($hash, $offset) & 0x7FFFFFFF;
$pinValue = str_pad($truncatedHash % self::$PIN_MODULO,6,"0",STR_PAD_LEFT);;
$pinValue = str_pad($truncatedHash % self::$PIN_MODULO, 6, "0", STR_PAD_LEFT);
return $pinValue;
}
/**
* Converts a byte array to an integer value.
*
* @param string $bytes The byte array to convert.
* @param int $start The starting position in the byte array.
*
* @return int The converted integer value.
*/
protected function hashToInt($bytes, $start) {
$input = substr($bytes, $start, strlen($bytes) - $start);
$val2 = unpack("N",substr($input,0,4));
$val2 = unpack("N", substr($input, 0, 4));
return $val2[1];
}
/**
* Generates a URL for the Google QR code.
*
* @param string $user The user's username.
* @param string $hostname The hostname of the service.
* @param string $secret The secret to encode in the QR code.
*
* @return string A URL that can be used to generate a QR code with the provided secret.
*/
public function getUrl($user, $hostname, $secret) {
$url = sprintf("otpauth://totp/%s@%s?secret=%s", $user, $hostname, $secret);
$encoder = "https://www.google.com/chart?chs=200x200&chld=M|0&cht=qr&chl=";
$encoderURL = sprintf( "%sotpauth://totp/%s@%s&secret=%s",$encoder, $user, $hostname, $secret);
$encoderURL = sprintf("%sotpauth://totp/%s@%s&secret=%s", $encoder, $user, $hostname, $secret);
return $encoderURL;
}
/**
* Generates a secret based on random characters and converts it to Base32.
*
* @return string The generated secret in Base32 format.
*/
public function generateSecret() {
$secret = "";
for($i = 1; $i<= self::$SECRET_LENGTH;$i++) {
$c = rand(0,255);
$secret .= pack("c",$c);
for ($i = 1; $i <= self::$SECRET_LENGTH; $i++) {
$c = rand(0, 255);
$secret .= pack("c", $c);
}
$base32 = new base2n(5, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567', TRUE, TRUE);
return $base32->encode($secret);
$base32 = new base2n(5, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567', true, true);
return $base32->encode($secret);
}
}
?>