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- <?php
- if (!isset($_SERVER['PHP_AUTH_USER'])) {
- header('WWW-Authenticate: Basic realm="My Realm"');
- header('HTTP/1.0 401 Unauthorized');
- echo 'Text to send if user hits Cancel button';
- exit;
- } else {
- echo "<p>Hello {$_SERVER['PHP_AUTH_USER']}.</p>";
- echo "<p>You entered {$_SERVER['PHP_AUTH_PW']} as your password.</p>";
- }
- ?>
- Example #2 Digest HTTP Authentication example
- This example shows you how to implement a simple Digest HTTP authentication script. For more information read the » RFC 2617.
- <?php
- $realm = 'Restricted area';
- //user => password
- $users = array('admin' => 'mypass', 'guest' => 'guest');
- if (empty($_SERVER['PHP_AUTH_DIGEST'])) {
- header('HTTP/1.1 401 Unauthorized');
- header('WWW-Authenticate: Digest realm="'.$realm.
- '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
- die('Text to send if user hits Cancel button');
- }
- // analyze the PHP_AUTH_DIGEST variable
- if (!($data = http_digest_parse($_SERVER['PHP_AUTH_DIGEST'])) ||
- !isset($users[$data['username']]))
- die('Wrong Credentials!');
- // generate the valid response
- $A1 = md5($data['username'] . ':' . $realm . ':' . $users[$data['username']]);
- $A2 = md5($_SERVER['REQUEST_METHOD'].':'.$data['uri']);
- $valid_response = md5($A1.':'.$data['nonce'].':'.$data['nc'].':'.$data['cnonce'].':'.$data['qop'].':'.$A2);
- if ($data['response'] != $valid_response)
- die('Wrong Credentials!');
- // ok, valid username & password
- echo 'You are logged in as: ' . $data['username'];
- // function to parse the http auth header
- function http_digest_parse($txt)
- {
- // protect against missing data
- $needed_parts = array('nonce'=>1, 'nc'=>1, 'cnonce'=>1, 'qop'=>1, 'username'=>1, 'uri'=>1, 'response'=>1);
- $data = array();
- $keys = implode('|', array_keys($needed_parts));
- preg_match_all('@(' . $keys . ')=(?:(['"])([^2]+?)2|([^s,]+))@', $txt, $matches, PREG_SET_ORDER);
- foreach ($matches as $m) {
- $data[$m[1]] = $m[3] ? $m[3] : $m[4];
- unset($needed_parts[$m[1]]);
- }
- return $needed_parts ? false : $data;
- }
- ?>
- How to create a password for a .htpasswd file using PHP
- A user emailed me and asked how to create a password for a .htpasswd file using PHP. It is actually very simple.
- Below is a PHP script that generates a password for .htpasswd from the clear text password stored in $clearTextPassword.
- Please note: For Apache servers running on Windows you have to use the htpasswd program to generate passwords, or use the htpasswd generator.
- <?php
- // Password to be encrypted for a .htpasswd file
- $clearTextPassword = 'some password';
- // Encrypt password
- $password = crypt($clearTextPassword, base64_encode($clearTextPassword));
- // Print encrypted password
- echo $password;
- ?>
- How to use the code:
- 1.Copy the above the code and paste it into your favorite text editor (ie notepad).
- 2.Change “some password” to the password you want to encrypt.
- 3.Save the code in file called htpasswd.php.
- 4.Upload htpasswd.php to your webserver.
- 6.The outputted text is your encrypted password.
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