diff options
Diffstat (limited to 'plugins/auth_radius/php-radius/radius.php')
| -rw-r--r-- | plugins/auth_radius/php-radius/radius.php | 840 |
1 files changed, 840 insertions, 0 deletions
diff --git a/plugins/auth_radius/php-radius/radius.php b/plugins/auth_radius/php-radius/radius.php new file mode 100644 index 000000000..b56f061af --- /dev/null +++ b/plugins/auth_radius/php-radius/radius.php @@ -0,0 +1,840 @@ +<?php
+
+/*********************************************************************
+ *
+ * Pure PHP radius class
+ *
+ * This Radius class is a radius client implementation in pure PHP
+ * following the RFC 2865 rules (http://www.ietf.org/rfc/rfc2865.txt)
+ *
+ * This class works with at least the following RADIUS servers:
+ * - Authenex Strong Authentication System (ASAS) with two-factor authentication
+ * - FreeRADIUS, a free Radius server implementation for Linux and *nix environments
+ * - Microsoft Radius server IAS
+ * - Mideye RADIUS server (http://www.mideye.com)
+ * - Radl, a free Radius server for Windows
+ * - RSA SecurID
+ * - VASCO Middleware 3.0 server
+ * - WinRadius, Windows Radius server (free for 5 users)
+ * - ZyXEL ZyWALL OTP (Authenex ASAS branded by ZyXEL, cheaper)
+ *
+ *
+ * LICENCE
+ *
+ * Copyright (c) 2008, SysCo systemes de communication sa
+ * SysCo (tm) is a trademark of SysCo systemes de communication sa
+ * (http://www.sysco.ch/)
+ * All rights reserved.
+ *
+ * This file is part of the Pure PHP radius class
+ *
+ * Pure PHP radius class is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * Pure PHP radius class is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Pure PHP radius class.
+ * If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * @author: SysCo/al
+ * @since CreationDate: 2008-01-04
+ * @copyright (c) 2008 by SysCo systemes de communication sa
+ * @version $LastChangedRevision: 1.2.2 $
+ * @version $LastChangedDate: 2009-01-05 $
+ * @version $LastChangedBy: SysCo/al $
+ * @link $HeadURL: radius.class.php $
+ * @link http://developer.sysco.ch/php/
+ * @link [email protected]
+ * Language: PHP 4.0.7 or higher
+ *
+ *
+ * Usage
+ *
+ * require_once('radius.class.php');
+ * $radius = new Radius($ip_radius_server = 'radius_server_ip_address', $shared_secret = 'radius_shared_secret'[, $radius_suffix = 'optional_radius_suffix'[, $udp_timeout = udp_timeout_in_seconds[, $authentication_port = 1812]]]);
+ * $result = $radius->Access_Request($username = 'username', $password = 'password'[, $udp_timeout = udp_timeout_in_seconds]);
+ *
+ *
+ * Examples
+ *
+ * Example 1
+ * <?php
+ * require_once('radius.class.php');
+ * $radius = new Radius('127.0.0.1', 'secret');
+ * $radius->SetNasIpAddress('1.2.3.4'); // Needed for some devices, and not auto_detected if PHP not runned through a web server
+ * if ($radius->AccessRequest('user', 'pass'))
+ * {
+ * echo "Authentication accepted.";
+ * }
+ * else
+ * {
+ * echo "Authentication rejected.";
+ * }
+ * ?>
+ *
+ * Example 2
+ * <?php
+ * require_once('radius.class.php');
+ * $radius = new Radius('127.0.0.1', 'secret');
+ * $radius->SetNasPort(0);
+ * $radius->SetNasIpAddress('1.2.3.4'); // Needed for some devices, and not auto_detected if PHP not runned through a web server
+ * if ($radius->AccessRequest('user', 'pass'))
+ * {
+ * echo "Authentication accepted.";
+ * echo "<br />";
+ * }
+ * else
+ * {
+ * echo "Authentication rejected.";
+ * echo "<br />";
+ * }
+ * echo $radius->GetReadableReceivedAttributes();
+ * ?>
+ *
+ *
+ * External file needed
+ *
+ * none.
+ *
+ *
+ * External file created
+ *
+ * none.
+ *
+ *
+ * Special issues
+ *
+ * - Sockets support must be enabled.
+ * * In Linux and *nix environments, the extension is enabled at
+ * compile time using the --enable-sockets configure option
+ * * In Windows, PHP Sockets can be activated by un-commenting
+ * extension=php_sockets.dll in php.ini
+ *
+ *
+ * Other related ressources
+ *
+ * FreeRADIUS, a free Radius server implementation for Linux and *nix environments:
+ * http://www.freeradius.org/
+ *
+ * WinRadius, Windows Radius server (free for 5 users):
+ * http://www.itconsult2000.com/en/product/WinRadius.zip
+ *
+ * Radl, a free Radius server for Windows:
+ * http://www.loriotpro.com/Products/RadiusServer/FreeRadiusServer_EN.php
+ *
+ * DOS command line Radius client:
+ * http://www.itconsult2000.com/en/product/WinRadiusClient.zip
+ *
+ *
+ * Users feedbacks and comments
+ *
+ * 2008-07-02 Pim Koeman/Parantion
+ *
+ * When using a radius connection behind a linux iptables firewall
+ * allow port 1812 and 1813 with udp protocol
+ *
+ * IPTABLES EXAMPLE (command line):
+ * iptables -A AlwaysACCEPT -p udp --dport 1812 -j ACCEPT
+ * iptables -A AlwaysACCEPT -p udp --dport 1813 -j ACCEPT
+ *
+ * or put the lines in /etc/sysconfig/iptables (red-hat type systems (fedora, centos, rhel etc.)
+ * -A AlwaysACCEPT -p udp --dport 1812 -j ACCEPT
+ * -A AlwaysACCEPT -p udp --dport 1813 -j ACCEPT
+ *
+ *
+ * Change Log
+ *
+ * 2009-01-05 1.2.2 SysCo/al Added Robert Svensson feedback, Mideye RADIUS server is supported
+ * 2008-11-11 1.2.1 SysCo/al Added Carlo Ferrari resolution in examples (add NAS IP Address for a VASCO Middleware server)
+ * 2008-07-07 1.2 SysCo/al Added Pim Koeman (Parantion) contribution
+ * - comments concerning using radius behind a linux iptables firewall
+ * Added Jon Bright (tick Trading Software AG) contribution
+ * - false octal encoding with 0xx indexes (indexes are now rewritten in xx only)
+ * - challenge/response support for the RSA SecurID New-PIN mode
+ * Added GetRadiusPacketInfo() method
+ * Added GetAttributesInfo() method
+ * Added DecodeVendorSpecificContent() (to answer Raul Carvalho's question)
+ * Added Decoded Vendor Specific Content in debug messages
+ * 2008-02-04 1.1 SysCo/al Typo error for the udp_timeout parameter (line 256 in the version 1.0)
+ * 2008-01-07 1.0 SysCo/al Initial release
+ *
+ *********************************************************************/
+
+
+/*********************************************************************
+ *
+ * Radius
+ * Pure PHP radius class
+ *
+ * Creation 2008-01-04
+ * Update 2009-01-05
+ * @package radius
+ * @version v.1.2.2
+ * @author SysCo/al
+ *
+ *********************************************************************/
+class Radius
+{
+ var $_ip_radius_server; // Radius server IP address
+ var $_shared_secret; // Shared secret with the radius server
+ var $_radius_suffix; // Radius suffix (default is '');
+ var $_udp_timeout; // Timeout of the UDP connection in seconds (default value is 5)
+ var $_authentication_port; // Authentication port (default value is 1812)
+ var $_accounting_port; // Accouting port (default value is 1813)
+ var $_nas_ip_address; // NAS IP address
+ var $_nas_port; // NAS port
+ var $_encrypted_password; // Encrypted password, as described in the RFC 2865
+ var $_user_ip_address; // Remote IP address of the user
+ var $_request_authenticator; // Request-Authenticator, 16 octets random number
+ var $_response_authenticator; // Request-Authenticator, 16 octets random number
+ var $_username; // Username to sent to the Radius server
+ var $_password; // Password to sent to the Radius server (clear password, must be encrypted)
+ var $_identifier_to_send; // Identifier field for the packet to be sent
+ var $_identifier_received; // Identifier field for the received packet
+ var $_radius_packet_to_send; // Radius packet code (1=Access-Request, 2=Access-Accept, 3=Access-Reject, 4=Accounting-Request, 5=Accounting-Response, 11=Access-Challenge, 12=Status-Server (experimental), 13=Status-Client (experimental), 255=Reserved
+ var $_radius_packet_received; // Radius packet code (1=Access-Request, 2=Access-Accept, 3=Access-Reject, 4=Accounting-Request, 5=Accounting-Response, 11=Access-Challenge, 12=Status-Server (experimental), 13=Status-Client (experimental), 255=Reserved
+ var $_attributes_to_send; // Radius attributes to send
+ var $_attributes_received; // Radius attributes received
+ var $_socket_to_server; // Socket connection
+ var $_debug_mode; // Debug mode flag
+ var $_attributes_info; // Attributes info array
+ var $_radius_packet_info; // Radius packet codes info array
+ var $_last_error_code; // Last error code
+ var $_last_error_message; // Last error message
+
+
+ /*********************************************************************
+ *
+ * Name: Radius
+ * short description: Radius class constructor
+ *
+ * Creation 2008-01-04
+ * Update 2009-01-05
+ * @version v.1.2.2
+ * @author SysCo/al
+ * @param string ip address of the radius server
+ * @param string shared secret with the radius server
+ * @param string radius domain name suffix (default is empty)
+ * @param integer UDP timeout (default is 5)
+ * @param integer authentication port
+ * @param integer accounting port
+ * @return NULL
+ *********************************************************************/
+ public function Radius($ip_radius_server = '127.0.0.1', $shared_secret = '', $radius_suffix = '', $udp_timeout = 5, $authentication_port = 1812, $accounting_port = 1813)
+ {
+ $this->_radius_packet_info[1] = 'Access-Request';
+ $this->_radius_packet_info[2] = 'Access-Accept';
+ $this->_radius_packet_info[3] = 'Access-Reject';
+ $this->_radius_packet_info[4] = 'Accounting-Request';
+ $this->_radius_packet_info[5] = 'Accounting-Response';
+ $this->_radius_packet_info[11] = 'Access-Challenge';
+ $this->_radius_packet_info[12] = 'Status-Server (experimental)';
+ $this->_radius_packet_info[13] = 'Status-Client (experimental)';
+ $this->_radius_packet_info[255] = 'Reserved';
+
+ $this->_attributes_info[1] = array('User-Name', 'S');
+ $this->_attributes_info[2] = array('User-Password', 'S');
+ $this->_attributes_info[3] = array('CHAP-Password', 'S'); // Type (1) / Length (1) / CHAP Ident (1) / String
+ $this->_attributes_info[4] = array('NAS-IP-Address', 'A');
+ $this->_attributes_info[5] = array('NAS-Port', 'I');
+ $this->_attributes_info[6] = array('Service-Type', 'I');
+ $this->_attributes_info[7] = array('Framed-Protocol', 'I');
+ $this->_attributes_info[8] = array('Framed-IP-Address', 'A');
+ $this->_attributes_info[9] = array('Framed-IP-Netmask', 'A');
+ $this->_attributes_info[10] = array('Framed-Routing', 'I');
+ $this->_attributes_info[11] = array('Filter-Id', 'T');
+ $this->_attributes_info[12] = array('Framed-MTU', 'I');
+ $this->_attributes_info[13] = array('Framed-Compression', 'I');
+ $this->_attributes_info[14] = array( 'Login-IP-Host', 'A');
+ $this->_attributes_info[15] = array('Login-service', 'I');
+ $this->_attributes_info[16] = array('Login-TCP-Port', 'I');
+ $this->_attributes_info[17] = array('(unassigned)', '');
+ $this->_attributes_info[18] = array('Reply-Message', 'T');
+ $this->_attributes_info[19] = array('Callback-Number', 'S');
+ $this->_attributes_info[20] = array('Callback-Id', 'S');
+ $this->_attributes_info[21] = array('(unassigned)', '');
+ $this->_attributes_info[22] = array('Framed-Route', 'T');
+ $this->_attributes_info[23] = array('Framed-IPX-Network', 'I');
+ $this->_attributes_info[24] = array('State', 'S');
+ $this->_attributes_info[25] = array('Class', 'S');
+ $this->_attributes_info[26] = array('Vendor-Specific', 'S'); // Type (1) / Length (1) / Vendor-Id (4) / Vendor type (1) / Vendor length (1) / Attribute-Specific...
+ $this->_attributes_info[27] = array('Session-Timeout', 'I');
+ $this->_attributes_info[28] = array('Idle-Timeout', 'I');
+ $this->_attributes_info[29] = array('Termination-Action', 'I');
+ $this->_attributes_info[30] = array('Called-Station-Id', 'S');
+ $this->_attributes_info[31] = array('Calling-Station-Id', 'S');
+ $this->_attributes_info[32] = array('NAS-Identifier', 'S');
+ $this->_attributes_info[33] = array('Proxy-State', 'S');
+ $this->_attributes_info[34] = array('Login-LAT-Service', 'S');
+ $this->_attributes_info[35] = array('Login-LAT-Node', 'S');
+ $this->_attributes_info[36] = array('Login-LAT-Group', 'S');
+ $this->_attributes_info[37] = array('Framed-AppleTalk-Link', 'I');
+ $this->_attributes_info[38] = array('Framed-AppleTalk-Network', 'I');
+ $this->_attributes_info[39] = array('Framed-AppleTalk-Zone', 'S');
+ $this->_attributes_info[60] = array('CHAP-Challenge', 'S');
+ $this->_attributes_info[61] = array('NAS-Port-Type', 'I');
+ $this->_attributes_info[62] = array('Port-Limit', 'I');
+ $this->_attributes_info[63] = array('Login-LAT-Port', 'S');
+ $this->_attributes_info[76] = array('Prompt', 'I');
+
+ $this->_identifier_to_send = 0;
+ $this->_user_ip_address = (isset($_SERVER['REMOTE_ADDR'])?$_SERVER['REMOTE_ADDR']:'0.0.0.0');
+
+ $this->GenerateRequestAuthenticator();
+ $this->SetIpRadiusServer($ip_radius_server);
+ $this->SetSharedSecret($shared_secret);
+ $this->SetAuthenticationPort($authentication_port);
+ $this->SetAccountingPort($accounting_port);
+ $this->SetRadiusSuffix($radius_suffix);
+ $this->SetUdpTimeout($udp_timeout);
+ $this->SetUsername();
+ $this->SetPassword();
+ $this->SetNasIpAddress();
+ $this->SetNasPort();
+
+ $this->ClearLastError();
+ $this->ClearDataToSend();
+ $this->ClearDataReceived();
+ }
+
+
+ function GetNextIdentifier()
+ {
+ $this->_identifier_to_send = (($this->_identifier_to_send + 1) % 256);
+ return $this->_identifier_to_send;
+ }
+
+
+ function GenerateRequestAuthenticator()
+ {
+ $this->_request_authenticator = '';
+ for ($ra_loop = 0; $ra_loop <= 15; $ra_loop++)
+ {
+ $this->_request_authenticator .= chr(rand(1, 255));
+ }
+ }
+
+
+ function GetRequestAuthenticator()
+ {
+ return $this->_request_authenticator;
+ }
+
+
+ function GetLastError()
+ {
+ if (0 < $this->_last_error_code)
+ {
+ return $this->_last_error_message.' ('.$this->_last_error_code.')';
+ }
+ else
+ {
+ return '';
+ }
+ }
+
+
+ function ClearDataToSend()
+ {
+ $this->_radius_packet_to_send = 0;
+ $this->_attributes_to_send = NULL;
+ }
+
+
+ function ClearDataReceived()
+ {
+ $this->_radius_packet_received = 0;
+ $this->_attributes_received = NULL;
+ }
+
+
+ function SetPacketCodeToSend($packet_code)
+ {
+ $this->_radius_packet_to_send = $packet_code;
+ }
+
+
+ function SetDebugMode($debug_mode)
+ {
+ $this->_debug_mode = (TRUE === $debug_mode);
+ }
+
+
+ function SetIpRadiusServer($ip_radius_server)
+ {
+ $this->_ip_radius_server = gethostbyname($ip_radius_server);
+ }
+
+
+ function SetSharedSecret($shared_secret)
+ {
+ $this->_shared_secret = $shared_secret;
+ }
+
+
+ function SetRadiusSuffix($radius_suffix)
+ {
+ $this->_radius_suffix = $radius_suffix;
+ }
+
+
+ function SetUsername($username = '')
+ {
+ $temp_username = $username;
+ if (false === strpos($temp_username, '@'))
+ {
+ $temp_username .= $this->_radius_suffix;
+ }
+
+ $this->_username = $temp_username;
+ $this->SetAttribute(1, $this->_username);
+ }
+
+
+ function SetPassword($password = '')
+ {
+ $this->_password = $password;
+ $encrypted_password = '';
+ $padded_password = $password;
+
+ if (0 != (strlen($password)%16))
+ {
+ $padded_password .= str_repeat(chr(0),(16-strlen($password)%16));
+ }
+
+ $previous_result = $this->_request_authenticator;
+
+ for ($full_loop = 0; $full_loop < (strlen($padded_password)/16); $full_loop++)
+ {
+ $xor_value = md5($this->_shared_secret.$previous_result);
+
+ $previous_result = '';
+ for ($xor_loop = 0; $xor_loop <= 15; $xor_loop++)
+ {
+ $value1 = ord(substr($padded_password, ($full_loop * 16) + $xor_loop, 1));
+ $value2 = hexdec(substr($xor_value, 2*$xor_loop, 2));
+ $xor_result = $value1 ^ $value2;
+ $previous_result .= chr($xor_result);
+ }
+ $encrypted_password .= $previous_result;
+ }
+
+ $this->_encrypted_password = $encrypted_password;
+ $this->SetAttribute(2, $this->_encrypted_password);
+ }
+
+
+ function SetNasIPAddress($nas_ip_address = '')
+ {
+ if (0 < strlen($nas_ip_address))
+ {
+ $this->_nas_ip_address = gethostbyname($nas_ip_address);
+ }
+ else
+ {
+ $this->_nas_ip_address = gethostbyname(isset($_SERVER['SERVER_ADDR'])?$_SERVER['SERVER_ADDR']:'0.0.0.0');
+ }
+ $this->SetAttribute(4, $this->_nas_ip_address);
+ }
+
+
+ function SetNasPort($nas_port = 0)
+ {
+ $this->_nas_port = intval($nas_port);
+ $this->SetAttribute(5, $this->_nas_port);
+ }
+
+
+ function SetUdpTimeout($udp_timeout = 5)
+ {
+ if (intval($udp_timeout) > 0)
+ {
+ $this->_udp_timeout = intval($udp_timeout);
+ }
+ }
+
+
+ function ClearLastError()
+ {
+ $this->_last_error_code = 0;
+ $this->_last_error_message = '';
+ }
+
+
+ function SetAuthenticationPort($authentication_port)
+ {
+ if ((intval($authentication_port) > 0) && (intval($authentication_port) < 65536))
+ {
+ $this->_authentication_port = intval($authentication_port);
+ }
+ }
+
+
+ function SetAccountingPort($accounting_port)
+ {
+ if ((intval($accounting_port) > 0) && (intval($accounting_port) < 65536))
+ {
+ $this->_accounting_port = intval($accounting_port);
+ }
+ }
+
+
+ function GetReceivedPacket()
+ {
+ return $this->_radius_packet_received;
+ }
+
+
+ function GetReceivedAttributes()
+ {
+ return $this->_attributes_received;
+ }
+
+
+ function GetReadableReceivedAttributes()
+ {
+ $readable_attributes = '';
+ if (isset($this->_attributes_received))
+ {
+ foreach($this->_attributes_received as $one_received_attribute)
+ {
+ $attributes_info = $this->GetAttributesInfo($one_received_attribute[0]);
+ $readable_attributes .= $attributes_info[0].": ";
+ if (26 == $one_received_attribute[0])
+ {
+ $vendor_array = $this->DecodeVendorSpecificContent($one_received_attribute[1]);
+ foreach($vendor_array as $vendor_one)
+ {
+ $readable_attributes .= 'Vendor-Id: '.$vendor_one[0].", Vendor-type: ".$vendor_one[1].", Attribute-specific: ".$vendor_one[2];
+ }
+ }
+ else
+ {
+ $readable_attributes .= $one_received_attribute[1];
+ }
+ $readable_attributes .= "<br />\n";
+ }
+ }
+ return $readable_attributes;
+ }
+
+
+ function GetAttribute($attribute_type)
+ {
+ $attribute_value = NULL;
+ foreach($this->_attributes_received as $one_received_attribute)
+ {
+ if (intval($attribute_type) == $one_received_attribute[0])
+ {
+ $attribute_value = $one_received_attribute[1];
+ break;
+ }
+ }
+ return $attribute_value;
+ }
+
+
+ function GetRadiusPacketInfo($info_index)
+ {
+ if (isset($this->_radius_packet_info[intval($info_index)]))
+ {
+ return $this->_radius_packet_info[intval($info_index)];
+ }
+ else
+ {
+ return '';
+ }
+ }
+
+
+ function GetAttributesInfo($info_index)
+ {
+ if (isset($this->_attributes_info[intval($info_index)]))
+ {
+ return $this->_attributes_info[intval($info_index)];
+ }
+ else
+ {
+ return array('','');
+ }
+ }
+
+
+ function DebugInfo($debug_info)
+ {
+ if ($this->_debug_mode)
+ {
+ echo date('Y-m-d H:i:s').' DEBUG: ';
+ echo $debug_info;
+ echo '<br />';
+ flush();
+ }
+ }
+
+
+ function SetAttribute($type, $value)
+ {
+ $attribute_index = -1;
+ for ($attributes_loop = 0; $attributes_loop < count($this->_attributes_to_send); $attributes_loop++)
+ {
+ if ($type == ord(substr($this->_attributes_to_send[$attributes_loop], 0, 1)))
+ {
+ $attribute_index = $attributes_loop;
+ break;
+ }
+ }
+
+ $temp_attribute = NULL;
+
+ if (isset($this->_attributes_info[$type]))
+ {
+ switch ($this->_attributes_info[$type][1])
+ {
+ case 'T': // Text, 1-253 octets containing UTF-8 encoded ISO 10646 characters (RFC 2279).
+ $temp_attribute = chr($type).chr(2+strlen($value)).$value;
+ break;
+ case 'S': // String, 1-253 octets containing binary data (values 0 through 255 decimal, inclusive).
+ $temp_attribute = chr($type).chr(2+strlen($value)).$value;
+ break;
+ case 'A': // Address, 32 bit value, most significant octet first.
+ $ip_array = explode(".", $value);
+ $temp_attribute = chr($type).chr(6).chr($ip_array[0]).chr($ip_array[1]).chr($ip_array[2]).chr($ip_array[3]);
+ break;
+ case 'I': // Integer, 32 bit unsigned value, most significant octet first.
+ $temp_attribute = chr($type).chr(6).chr(($value/(256*256*256))%256).chr(($value/(256*256))%256).chr(($value/(256))%256).chr($value%256);
+ break;
+ case 'D': // Time, 32 bit unsigned value, most significant octet first -- seconds since 00:00:00 UTC, January 1, 1970. (not used in this RFC)
+ $temp_attribute = NULL;
+ break;
+ default:
+ $temp_attribute = NULL;
+ }
+ }
+
+ if ($attribute_index > -1)
+ {
+ $this->_attributes_to_send[$attribute_index] = $temp_attribute;
+ $additional_debug = 'Modified';
+ }
+ else
+ {
+ $this->_attributes_to_send[] = $temp_attribute;
+ $additional_debug = 'Added';
+ }
+ $attribute_info = $this->GetAttributesInfo($type);
+ $this->DebugInfo($additional_debug.' Attribute '.$type.' ('.$attribute_info[0].'), format '.$attribute_info[1].', value <em>'.$value.'</em>');
+ }
+
+
+ function DecodeAttribute($attribute_raw_value, $attribute_format)
+ {
+ $attribute_value = NULL;
+
+ if (isset($this->_attributes_info[$attribute_format]))
+ {
+ switch ($this->_attributes_info[$attribute_format][1])
+ {
+ case 'T': // Text, 1-253 octets containing UTF-8 encoded ISO 10646 characters (RFC 2279).
+ $attribute_value = $attribute_raw_value;
+ break;
+ case 'S': // String, 1-253 octets containing binary data (values 0 through 255 decimal, inclusive).
+ $attribute_value = $attribute_raw_value;
+ break;
+ case 'A': // Address, 32 bit value, most significant octet first.
+ $attribute_value = ord(substr($attribute_raw_value, 0, 1)).'.'.ord(substr($attribute_raw_value, 1, 1)).'.'.ord(substr($attribute_raw_value, 2, 1)).'.'.ord(substr($attribute_raw_value, 3, 1));
+ break;
+ case 'I': // Integer, 32 bit unsigned value, most significant octet first.
+ $attribute_value = (ord(substr($attribute_raw_value, 0, 1))*256*256*256)+(ord(substr($attribute_raw_value, 1, 1))*256*256)+(ord(substr($attribute_raw_value, 2, 1))*256)+ord(substr($attribute_raw_value, 3, 1));
+ break;
+ case 'D': // Time, 32 bit unsigned value, most significant octet first -- seconds since 00:00:00 UTC, January 1, 1970. (not used in this RFC)
+ $attribute_value = NULL;
+ break;
+ default:
+ $attribute_value = NULL;
+ }
+ }
+ return $attribute_value;
+ }
+
+
+ /*********************************************************************
+ * Array returned: array(array(Vendor-Id1, Vendor type1, Attribute-Specific1), ..., array(Vendor-IdN, Vendor typeN, Attribute-SpecificN)
+ *********************************************************************/
+ function DecodeVendorSpecificContent($vendor_specific_raw_value)
+ {
+ $result = array();
+ $offset_in_raw = 0;
+ $vendor_id = (ord(substr($vendor_specific_raw_value, 0, 1))*256*256*256)+(ord(substr($vendor_specific_raw_value, 1, 1))*256*256)+(ord(substr($vendor_specific_raw_value, 2, 1))*256)+ord(substr($vendor_specific_raw_value, 3, 1));
+ $offset_in_raw += 4;
+ while ($offset_in_raw < strlen($vendor_specific_raw_value))
+ {
+ $vendor_type = (ord(substr($vendor_specific_raw_value, 0+$offset_in_raw, 1)));
+ $vendor_length = (ord(substr($vendor_specific_raw_value, 1+$offset_in_raw, 1)));
+ $attribute_specific = substr($vendor_specific_raw_value, 2+$offset_in_raw, $vendor_length);
+ $result[] = array($vendor_id, $vendor_type, $attribute_specific);
+ $offset_in_raw += ($vendor_length);
+ }
+
+ return $result;
+ }
+
+
+ /*
+ * Function : AccessRequest
+ *
+ * Return TRUE if Access-Request is accepted, FALSE otherwise
+ */
+ function AccessRequest($username = '', $password = '', $udp_timeout = 0, $state = NULL)
+ {
+ $this->ClearDataReceived();
+ $this->ClearLastError();
+
+ $this->SetPacketCodeToSend(1); // Access-Request
+
+ if (0 < strlen($username))
+ {
+ $this->SetUsername($username);
+ }
+
+ if (0 < strlen($password))
+ {
+ $this->SetPassword($password);
+ }
+
+ if ($state!==NULL)
+ {
+ $this->SetAttribute(24, $state);
+ }
+ else
+ {
+ $this->SetAttribute(6, 1); // 1=Login
+ }
+
+ if (intval($udp_timeout) > 0)
+ {
+ $this->SetUdpTimeout($udp_timeout);
+ }
+
+ $attributes_content = '';
+ for ($attributes_loop = 0; $attributes_loop < count($this->_attributes_to_send); $attributes_loop++)
+ {
+ $attributes_content .= $this->_attributes_to_send[$attributes_loop];
+ }
+
+ $packet_length = 4; // Radius packet code + Identifier + Length high + Length low
+ $packet_length += strlen($this->_request_authenticator); // Request-Authenticator
+ $packet_length += strlen($attributes_content); // Attributes
+
+ $packet_data = chr($this->_radius_packet_to_send);
+ $packet_data .= chr($this->GetNextIdentifier());
+ $packet_data .= chr(intval($packet_length/256));
+ $packet_data .= chr(intval($packet_length%256));
+ $packet_data .= $this->_request_authenticator;
+ $packet_data .= $attributes_content;
+
+ $_socket_to_server = socket_create(AF_INET, SOCK_DGRAM, 17); // UDP packet = 17
+
+ if ($_socket_to_server === FALSE)
+ {
+ $this->_last_error_code = socket_last_error();
+ $this->_last_error_message = socket_strerror($this->_last_error_code);
+ }
+ elseif (FALSE === socket_connect($_socket_to_server, $this->_ip_radius_server, $this->_authentication_port))
+ {
+ $this->_last_error_code = socket_last_error();
+ $this->_last_error_message = socket_strerror($this->_last_error_code);
+ }
+ elseif (FALSE === socket_write($_socket_to_server, $packet_data, $packet_length))
+ {
+ $this->_last_error_code = socket_last_error();
+ $this->_last_error_message = socket_strerror($this->_last_error_code);
+ }
+ else
+ {
+ $this->DebugInfo('<b>Packet type '.$this->_radius_packet_to_send.' ('.$this->GetRadiusPacketInfo($this->_radius_packet_to_send).')'.' sent</b>');
+ if ($this->_debug_mode)
+ {
+ $readable_attributes = '';
+ foreach($this->_attributes_to_send as $one_attribute_to_send)
+ {
+ $attribute_info = $this->GetAttributesInfo(ord(substr($one_attribute_to_send,0,1)));
+ $this->DebugInfo('Attribute '.ord(substr($one_attribute_to_send,0,1)).' ('.$attribute_info[0].'), length '.(ord(substr($one_attribute_to_send,1,1))-2).', format '.$attribute_info[1].', value <em>'.$this->DecodeAttribute(substr($one_attribute_to_send,2), ord(substr($one_attribute_to_send,0,1))).'</em>');
+ }
+ }
+ $read_socket_array = array($_socket_to_server);
+ $write_socket_array = NULL;
+ $except_socket_array = NULL;
+
+ $received_packet = chr(0);
+
+ if (!(FALSE === socket_select($read_socket_array, $write_socket_array, $except_socket_array, $this->_udp_timeout)))
+ {
+ if (in_array($_socket_to_server, $read_socket_array))
+ {
+ if (FALSE === ($received_packet = @socket_read($_socket_to_server, 1024))) // @ used, than no error is displayed if the connection is closed by the remote host
+ {
+ $received_packet = chr(0);
+ $this->_last_error_code = socket_last_error();
+ $this->_last_error_message = socket_strerror($this->_last_error_code);
+ }
+ else
+ {
+ socket_close($_socket_to_server);
+ }
+ }
+ }
+ else
+ {
+ socket_close($_socket_to_server);
+ }
+ }
+
+ $this->_radius_packet_received = intval(ord(substr($received_packet, 0, 1)));
+
+ $this->DebugInfo('<b>Packet type '.$this->_radius_packet_received.' ('.$this->GetRadiusPacketInfo($this->_radius_packet_received).')'.' received</b>');
+
+ if ($this->_radius_packet_received > 0)
+ {
+ $this->_identifier_received = intval(ord(substr($received_packet, 1, 1)));
+ $packet_length = (intval(ord(substr($received_packet, 2, 1))) * 256) + (intval(ord(substr($received_packet, 3, 1))));
+ $this->_response_authenticator = substr($received_packet, 4, 16);
+ $attributes_content = substr($received_packet, 20, ($packet_length - 4 - 16));
+ while (strlen($attributes_content) > 2)
+ {
+ $attribute_type = intval(ord(substr($attributes_content,0,1)));
+ $attribute_length = intval(ord(substr($attributes_content,1,1)));
+ $attribute_raw_value = substr($attributes_content,2,$attribute_length-2);
+ $attributes_content = substr($attributes_content, $attribute_length);
+
+ $attribute_value = $this->DecodeAttribute($attribute_raw_value, $attribute_type);
+
+ $attribute_info = $this->GetAttributesInfo($attribute_type);
+ if (26 == $attribute_type)
+ {
+ $vendor_array = $this->DecodeVendorSpecificContent($attribute_value);
+ foreach($vendor_array as $vendor_one)
+ {
+ $this->DebugInfo('Attribute '.$attribute_type.' ('.$attribute_info[0].'), length '.($attribute_length-2).', format '.$attribute_info[1].', Vendor-Id: '.$vendor_one[0].", Vendor-type: ".$vendor_one[1].", Attribute-specific: ".$vendor_one[2]);
+ }
+ }
+ else
+ {
+ $this->DebugInfo('Attribute '.$attribute_type.' ('.$attribute_info[0].'), length '.($attribute_length-2).', format '.$attribute_info[1].', value <em>'.$attribute_value.'</em>');
+ }
+
+ $this->_attributes_received[] = array($attribute_type, $attribute_value);
+ }
+ }
+
+ return (2 == ($this->_radius_packet_received));
+ }
+}
+
+?>
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