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<?php |
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namespace Ballybran\Core\Http; |
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class DigestAuthentication |
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{ |
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private $username; |
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private $password; |
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private $realm = 'Restricted area'; |
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/** |
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* @return string |
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*/ |
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public function getRealm(): string |
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{ |
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return $this->realm; |
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} |
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/** |
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* @param string $realm |
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*/ |
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public function setRealm(string $realm): void |
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{ |
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$this->realm = $realm; |
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} |
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public function __construct() |
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{ |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getUsername() |
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{ |
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return $this->username; |
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} |
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/** |
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* @param mixed $username |
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*/ |
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public function setUsername($username): void |
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{ |
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$this->username = $username; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getPassword() |
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{ |
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return $this->password; |
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} |
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/** |
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* @param mixed $password |
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*/ |
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public function setPassword($password): void |
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{ |
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$this->password = $password; |
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} |
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public function __invoke() |
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{ |
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//user => password |
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$users = array('zebedeu' => '1234' , 'guest' => 'guest'); |
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if (empty($_SERVER['PHP_AUTH_DIGEST'])) { |
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header('HTTP/1.1 401 Unauthorized'); |
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header('WWW-Authenticate: Digest realm="' . $this->getRealm() . |
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'",qop="auth",nonce="' . uniqid() . '",opaque="' . md5($this->getRealm()) . '"'); |
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die('Text to send if user hits Cancel button'); |
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} |
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$data = $this->checkUserPassword($users); |
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// generate the valid response |
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$A1 = md5($data['username'] . ':' . $this->getRealm() . ':' . $users[$data['username']] . ':' . $users[$data['password']]); |
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$A2 = md5($_SERVER['REQUEST_METHOD'] . ':' . $data['uri']); |
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$valid_response = md5($A1 . ':' . $data['nonce'] . ':' . $data['nc'] . ':' . $data['cnonce'] . ':' . $data['qop'] . ':' . $A2); |
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if ($data['response'] != $valid_response) { |
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die('Wrong Credentials!'); |
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} |
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echo 'You are logged in as: ' . $data['username']; |
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} |
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// function to parse the http auth header |
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function http_digest_parse($txt) |
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{ |
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// protect against missing data |
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$needed_parts = array('nonce' => 1 , 'nc' => 1 , 'cnonce' => 1 , 'qop' => 1 , 'username' => 1 , 'uri' => 1 , 'response' => 1); |
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$data = array(); |
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$keys = implode('|' , array_keys($needed_parts)); |
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preg_match_all('@(' . $keys . ')=(?:([\'"])([^\2]+?)\2|([^\s,]+))@' , $txt , $matches , PREG_SET_ORDER); |
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foreach ($matches as $m) { |
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$data[$m[1]] = $m[3] ? $m[3] : $m[4]; |
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unset($needed_parts[$m[1]]); |
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} |
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return !empty($needed_parts) ? false : $data; |
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} |
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/* |
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* analyze the PHP_AUTH_DIGEST variable |
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* |
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*/ |
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public function checkUserPassword($users){ |
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$data = $this->http_digest_parse($_SERVER['PHP_AUTH_DIGEST']); |
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var_dump($data); |
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if (!($data) || ! isset($users[$data['username']])) { |
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die('Wrong Credentials!'); |
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} |
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return $data; |
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} |
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131
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} |
knut7 /
framework
Zebedeu
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In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.