--- /dev/null
+<?php
+/*
+ * ntlm_sasl_client.php
+ *
+ * @(#) $Id: ntlm_sasl_client.php,v 1.3 2004/11/17 08:00:37 mlemos Exp $
+ *
+ */
+
+define("SASL_NTLM_STATE_START", 0);
+define("SASL_NTLM_STATE_IDENTIFY_DOMAIN", 1);
+define("SASL_NTLM_STATE_RESPOND_CHALLENGE", 2);
+define("SASL_NTLM_STATE_DONE", 3);
+define("SASL_FAIL", -1);
+define("SASL_CONTINUE", 1);
+
+class ntlm_sasl_client_class
+{
+ public $credentials = array();
+ public $state = SASL_NTLM_STATE_START;
+
+ public function initialize(&$client)
+ {
+ if (!function_exists($function = "mcrypt_encrypt")
+ || !function_exists($function = "mhash")
+ ) {
+ $extensions = array(
+ "mcrypt_encrypt" => "mcrypt",
+ "mhash" => "mhash"
+ );
+ $client->error = "the extension " . $extensions[$function] .
+ " required by the NTLM SASL client class is not available in this PHP configuration";
+ return (0);
+ }
+ return (1);
+ }
+
+ public function ASCIIToUnicode($ascii)
+ {
+ for ($unicode = "", $a = 0; $a < strlen($ascii); $a++) {
+ $unicode .= substr($ascii, $a, 1) . chr(0);
+ }
+ return ($unicode);
+ }
+
+ public function typeMsg1($domain, $workstation)
+ {
+ $domain_length = strlen($domain);
+ $workstation_length = strlen($workstation);
+ $workstation_offset = 32;
+ $domain_offset = $workstation_offset + $workstation_length;
+ return (
+ "NTLMSSP\0" .
+ "\x01\x00\x00\x00" .
+ "\x07\x32\x00\x00" .
+ pack("v", $domain_length) .
+ pack("v", $domain_length) .
+ pack("V", $domain_offset) .
+ pack("v", $workstation_length) .
+ pack("v", $workstation_length) .
+ pack("V", $workstation_offset) .
+ $workstation .
+ $domain
+ );
+ }
+
+ public function NTLMResponse($challenge, $password)
+ {
+ $unicode = $this->ASCIIToUnicode($password);
+ $md4 = mhash(MHASH_MD4, $unicode);
+ $padded = $md4 . str_repeat(chr(0), 21 - strlen($md4));
+ $iv_size = mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_ECB);
+ $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
+ for ($response = "", $third = 0; $third < 21; $third += 7) {
+ for ($packed = "", $p = $third; $p < $third + 7; $p++) {
+ $packed .= str_pad(decbin(ord(substr($padded, $p, 1))), 8, "0", STR_PAD_LEFT);
+ }
+ for ($key = "", $p = 0; $p < strlen($packed); $p += 7) {
+ $s = substr($packed, $p, 7);
+ $b = $s . ((substr_count($s, "1") % 2) ? "0" : "1");
+ $key .= chr(bindec($b));
+ }
+ $ciphertext = mcrypt_encrypt(MCRYPT_DES, $key, $challenge, MCRYPT_MODE_ECB, $iv);
+ $response .= $ciphertext;
+ }
+ return $response;
+ }
+
+ public function typeMsg3($ntlm_response, $user, $domain, $workstation)
+ {
+ $domain_unicode = $this->ASCIIToUnicode($domain);
+ $domain_length = strlen($domain_unicode);
+ $domain_offset = 64;
+ $user_unicode = $this->ASCIIToUnicode($user);
+ $user_length = strlen($user_unicode);
+ $user_offset = $domain_offset + $domain_length;
+ $workstation_unicode = $this->ASCIIToUnicode($workstation);
+ $workstation_length = strlen($workstation_unicode);
+ $workstation_offset = $user_offset + $user_length;
+ $lm = "";
+ $lm_length = strlen($lm);
+ $lm_offset = $workstation_offset + $workstation_length;
+ $ntlm = $ntlm_response;
+ $ntlm_length = strlen($ntlm);
+ $ntlm_offset = $lm_offset + $lm_length;
+ $session = "";
+ $session_length = strlen($session);
+ $session_offset = $ntlm_offset + $ntlm_length;
+ return (
+ "NTLMSSP\0" .
+ "\x03\x00\x00\x00" .
+ pack("v", $lm_length) .
+ pack("v", $lm_length) .
+ pack("V", $lm_offset) .
+ pack("v", $ntlm_length) .
+ pack("v", $ntlm_length) .
+ pack("V", $ntlm_offset) .
+ pack("v", $domain_length) .
+ pack("v", $domain_length) .
+ pack("V", $domain_offset) .
+ pack("v", $user_length) .
+ pack("v", $user_length) .
+ pack("V", $user_offset) .
+ pack("v", $workstation_length) .
+ pack("v", $workstation_length) .
+ pack("V", $workstation_offset) .
+ pack("v", $session_length) .
+ pack("v", $session_length) .
+ pack("V", $session_offset) .
+ "\x01\x02\x00\x00" .
+ $domain_unicode .
+ $user_unicode .
+ $workstation_unicode .
+ $lm .
+ $ntlm
+ );
+ }
+
+ public function start(&$client, &$message, &$interactions)
+ {
+ if ($this->state != SASL_NTLM_STATE_START) {
+ $client->error = "NTLM authentication state is not at the start";
+ return (SASL_FAIL);
+ }
+ $this->credentials = array(
+ "user" => "",
+ "password" => "",
+ "realm" => "",
+ "workstation" => ""
+ );
+ $defaults = array();
+ $status = $client->GetCredentials($this->credentials, $defaults, $interactions);
+ if ($status == SASL_CONTINUE) {
+ $this->state = SASL_NTLM_STATE_IDENTIFY_DOMAIN;
+ }
+ unset($message);
+ return ($status);
+ }
+
+ public function step(&$client, $response, &$message, &$interactions)
+ {
+ switch ($this->state) {
+ case SASL_NTLM_STATE_IDENTIFY_DOMAIN:
+ $message = $this->TypeMsg1($this->credentials["realm"], $this->credentials["workstation"]);
+ $this->state = SASL_NTLM_STATE_RESPOND_CHALLENGE;
+ break;
+ case SASL_NTLM_STATE_RESPOND_CHALLENGE:
+ $ntlm_response = $this->NTLMResponse(substr($response, 24, 8), $this->credentials["password"]);
+ $message = $this->TypeMsg3(
+ $ntlm_response,
+ $this->credentials["user"],
+ $this->credentials["realm"],
+ $this->credentials["workstation"]
+ );
+ $this->state = SASL_NTLM_STATE_DONE;
+ break;
+ case SASL_NTLM_STATE_DONE:
+ $client->error = "NTLM authentication was finished without success";
+ return (SASL_FAIL);
+ default:
+ $client->error = "invalid NTLM authentication step state";
+ return (SASL_FAIL);
+ }
+ return (SASL_CONTINUE);
+ }
+}
dépôts / lhc / web / www.git / blobdiff