1<?php
2
3require('config.php');
4
5if (!stristr($_SERVER["CONTENT_TYPE"], "application/soap+xml")) {
6  error_log("spp.php - Unexpected Content-Type " . $_SERVER["CONTENT_TYPE"]);
7  die("Unexpected Content-Type");
8}
9
10if ($_SERVER["REQUEST_METHOD"] != "POST") {
11  error_log("spp.php - Unexpected method " . $_SERVER["REQUEST_METHOD"]);
12  die("Unexpected method");
13}
14
15if (isset($_GET["realm"])) {
16  $realm = $_GET["realm"];
17  $realm = PREG_REPLACE("/[^0-9a-zA-Z\.\-]/i", '', $realm);
18} else {
19  error_log("spp.php - Realm not specified");
20  die("Realm not specified");
21}
22
23unset($user);
24putenv("HS20CERT");
25
26if (!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($realm).'"');
88  error_log("spp.php - Authentication required (not signup)");
89  die('Authentication required (not signup)');
90}
91
92
93if (isset($user) && strlen($user) > 0)
94  putenv("HS20USER=$user");
95else
96  putenv("HS20USER");
97
98putenv("HS20REALM=$realm");
99putenv("HS20POST=$HTTP_RAW_POST_DATA");
100$addr = $_SERVER["REMOTE_ADDR"];
101putenv("HS20ADDR=$addr");
102
103$last = exec("$osu_root/spp/hs20_spp_server -r$osu_root -f/tmp/hs20_spp_server.log", $output, $ret);
104
105if ($ret == 2) {
106  if (empty($_SERVER['PHP_AUTH_DIGEST'])) {
107    header('HTTP/1.1 401 Unauthorized');
108    header('WWW-Authenticate: Digest realm="'.$realm.
109           '",qop="auth",nonce="'.uniqid().'",opaque="'.md5($realm).'"');
110    error_log("spp.php - Authentication required (ret 2)");
111    die('Authentication required');
112  } else {
113    error_log("spp.php - Unexpected authentication error");
114    die("Unexpected authentication error");
115  }
116}
117if ($ret != 0) {
118  error_log("spp.php - Failed to process SPP request");
119  die("Failed to process SPP request");
120}
121//error_log("spp.php: Response: " . implode($output));
122
123header("Content-Type: application/soap+xml");
124
125echo implode($output);
126
127?>
128