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      1 <?php
      2 
      3 require('config.php');
      4 
      5 if (!stristr($_SERVER["CONTENT_TYPE"], "application/soap+xml")) {
      6   error_log("spp.php - Unexpected Content-Type " . $_SERVER["CONTENT_TYPE"]);
      7   die("Unexpected Content-Type");
      8 }
      9 
     10 if ($_SERVER["REQUEST_METHOD"] != "POST") {
     11   error_log("spp.php - Unexpected method " . $_SERVER["REQUEST_METHOD"]);
     12   die("Unexpected method");
     13 }
     14 
     15 if (isset($_GET["realm"])) {
     16   $realm = $_GET["realm"];
     17   $realm = PREG_REPLACE("/[^0-9a-zA-Z\.\-]/i", '', $realm);
     18 } else {
     19   error_log("spp.php - Realm not specified");
     20   die("Realm not specified");
     21 }
     22 
     23 unset($user);
     24 putenv("HS20CERT");
     25 
     26 if (!empty($_SERVER['PHP_AUTH_DIGEST'])) {
     27   $needed = array('nonce'=>1, 'nc'=>1, 'cnonce'=>1, 'qop'=>1, 'username'=>1,
     28 		  'uri'=>1, 'response'=>1);
     29   $data = array();
     30   $keys = implode('|', array_keys($needed));
     31   preg_match_all('@(' . $keys . ')=(?:([\'"])([^\2]+?)\2|([^\s,]+))@',
     32 		 $_SERVER['PHP_AUTH_DIGEST'], $matches, PREG_SET_ORDER);
     33   foreach ($matches as $m) {
     34     $data[$m[1]] = $m[3] ? $m[3] : $m[4];
     35     unset($needed[$m[1]]);
     36   }
     37   if ($needed) {
     38     error_log("spp.php - Authentication failed - missing: " . print_r($needed));
     39     die('Authentication failed');
     40   }
     41   $user = $data['username'];
     42   if (strlen($user) < 1) {
     43     error_log("spp.php - Authentication failed - empty username");
     44     die('Authentication failed');
     45   }
     46 
     47 
     48   $db = new PDO($osu_db);
     49   if (!$db) {
     50     error_log("spp.php - Could not access database");
     51     die("Could not access database");
     52   }
     53   $row = $db->query("SELECT password FROM users " .
     54 		    "WHERE identity='$user' AND realm='$realm'")->fetch();
     55   if (!$row) {
     56     $row = $db->query("SELECT osu_password FROM users " .
     57 		      "WHERE osu_user='$user' AND realm='$realm'")->fetch();
     58     $pw = $row['osu_password'];
     59   } else
     60     $pw = $row['password'];
     61   if (!$row) {
     62     error_log("spp.php - Authentication failed - user '$user' not found");
     63     die('Authentication failed');
     64   }
     65   if (strlen($pw) < 1) {
     66     error_log("spp.php - Authentication failed - empty password");
     67     die('Authentication failed');
     68   }
     69 
     70   $A1 = md5($user . ':' . $realm . ':' . $pw);
     71   $A2 = md5($_SERVER['REQUEST_METHOD'] . ':' . $data['uri']);
     72   $resp = md5($A1 . ':' . $data['nonce'] . ':' . $data['nc'] . ':' .
     73 	      $data['cnonce'] . ':' . $data['qop'] . ':' . $A2);
     74   if ($data['response'] != $resp) {
     75     error_log("Authentication failure - response mismatch");
     76     die('Authentication failed');
     77   }
     78 } else if (isset($_SERVER["SSL_CLIENT_VERIFY"]) &&
     79 	   $_SERVER["SSL_CLIENT_VERIFY"] == "SUCCESS" &&
     80 	   isset($_SERVER["SSL_CLIENT_M_SERIAL"])) {
     81   $user = "cert-" . $_SERVER["SSL_CLIENT_M_SERIAL"];
     82   putenv("HS20CERT=yes");
     83 } else if (!isset($_SERVER["PATH_INFO"]) ||
     84 	   $_SERVER["PATH_INFO"] != "/signup") {
     85   header('HTTP/1.1 401 Unauthorized');
     86   header('WWW-Authenticate: Digest realm="'.$realm.
     87 	 '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
     88   error_log("spp.php - Authentication required (not signup)");
     89   die('Authentication required (not signup)');
     90 }
     91 
     92 
     93 if (isset($user) && strlen($user) > 0)
     94   putenv("HS20USER=$user");
     95 else
     96   putenv("HS20USER");
     97 
     98 putenv("HS20REALM=$realm");
     99 $postdata = file_get_contents("php://input");
    100 putenv("HS20POST=$postdata");
    101 $addr = $_SERVER["REMOTE_ADDR"];
    102 putenv("HS20ADDR=$addr");
    103 
    104 $last = exec("$osu_root/spp/hs20_spp_server -r$osu_root -f/tmp/hs20_spp_server.log", $output, $ret);
    105 
    106 if ($ret == 2) {
    107   if (empty($_SERVER['PHP_AUTH_DIGEST'])) {
    108     header('HTTP/1.1 401 Unauthorized');
    109     header('WWW-Authenticate: Digest realm="'.$realm.
    110            '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
    111     error_log("spp.php - Authentication required (ret 2)");
    112     die('Authentication required');
    113   } else {
    114     error_log("spp.php - Unexpected authentication error");
    115     die("Unexpected authentication error");
    116   }
    117 }
    118 if ($ret != 0) {
    119   error_log("spp.php - Failed to process SPP request");
    120   die("Failed to process SPP request");
    121 }
    122 //error_log("spp.php: Response: " . implode($output));
    123 
    124 header("Content-Type: application/soap+xml");
    125 
    126 echo implode($output);
    127 
    128 ?>
    129