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<?php
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/*
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radius_accounting.inc
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part of m0n0wall (http://m0n0.ch/wall)
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Copyright (C) 2004 Dinesh Nair <dinesh@alphaque.com>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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// This version of radius_accounting.inc has been modified by
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// Rob Parker <rob.parker@keycom.co.uk>. Changes made include:
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// * now sends Framed-IP-Address (client IP)
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// * now sends Called-Station-ID (NAS IP)
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// * now sends Calling-Station-ID (client IP)
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*/
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function RADIUS_ACCOUNTING_START($username,$sessionid,$radiusip,$radiusport,$radiuskey,$clientip) {
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global $debug, $nasHostname, $errstr;
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$sharedsecret=$radiuskey ;
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# $debug = 1 ;
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exec("/bin/hostname", $nasHostname) ;
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if(!$nasHostname[0])
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$nasHostname[0] = "m0n0wall" ;
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$errno = "";
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$fd = @fsockopen("udp://$radiusip",$radiusport,$errno,$errstr,3) ;
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if(!$fd)
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return 1 ; /* error return */
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/* set 5 second timeout on socket i/o */
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stream_set_timeout($fd, 5) ;
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$nas_ip_address = get_nas_ip();
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if(!isset($clientip)) {
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//if there's no client ip, we'll need to use the NAS ip
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$clientip=$nas_ip_address;
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}
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$ip_exp=explode(".",$clientip);
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if ($debug)
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echo "<br>radius-port: $radiusport<br>radius-host: $radiusip<br>username: $username<hr>\n";
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$thisidentifier=rand()%256;
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$length=4+ // header
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16+ // auth code
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6+ // service type
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2+strlen($username)+ // username
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2+strlen($nasHostname[0])+ // nasIdentifier
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6+ // nasPort
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6+ // nasPortType
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6+ // Acct Status Type
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6+ // Acct RADIUS Authenticated
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2+strlen($sessionid)+ // Acct SessionID
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6; // Framed-IP-Address
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// v v v v v v v v v 1 v
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// Line # 1 2 3 4 5 6 7 8 9 0 E
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$data=pack("CCCCNNNNCCCCCCCCa*CCa*CCCCCCCCCCCCCCCCCCCCCCCCCCa*CCCCCC",
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4,$thisidentifier,$length/256,$length%256, // header
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0,0,0,0, // authcode
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6,6,0,0,0,1, // service type
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1,2+strlen($username),$username, // username
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32,2+strlen($nasHostname[0]),$nasHostname[0], // nasIdentifier
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5,6,0,0,0,0, // nasPort
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61,6,0,0,0,15, // nasPortType = Ethernet
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40,6,0,0,0,1, // Acct Status Type = Start
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45,6,0,0,0,1, // Acct RADIUS Authenticated
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44,2+strlen($sessionid),$sessionid, // Acct Session ID
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8,6,$ip_exp[0],$ip_exp[1],$ip_exp[2],$ip_exp[3] //Framed-IP-Address
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);
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/* Generate Accounting Request Authenticator */
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$RA = md5($data.$radiuskey) ;
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// v v v v v v v v v 1 v
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// Line # 1 2 3 4 5 6 7 8 9 0 E
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$data=pack("CCCCH*CCCCCCCCa*CCa*CCCCCCCCCCCCCCCCCCCCCCCCCCa*CCCCCC",
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4,$thisidentifier,$length/256,$length%256, // header
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$RA, // authcode
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6,6,0,0,0,1, // service type
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1,2+strlen($username),$username, // username
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32,2+strlen($nasHostname[0]),$nasHostname[0], // nasIdentifier
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5,6,0,0,0,0, // nasPort
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61,6,0,0,0,15, // nasPortType = Ethernet
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40,6,0,0,0,1, // Acct Status Type = Start
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45,6,0,0,0,1, // Acct RADIUS Authenticated
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44,2+strlen($sessionid),$sessionid, // Acct Session ID
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8,6,$ip_exp[0],$ip_exp[1],$ip_exp[2],$ip_exp[3] //Framed-IP-Address
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);
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if($debug) {
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echo "username is $username with len " . strlen($username) ."\n" ;
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echo "nasHostname is {$nasHostname[0]} with len " . strlen($nasHostname[0]) ."\n" ;
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}
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$ret = fwrite($fd,$data) ;
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if( !$ret || ($ret != $length) )
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return 1; /* error return */
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if ($debug)
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echo "<br>writing $length bytes<hr>\n";
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$readdata = fgets($fd,2) ; /* read 1 byte */
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$status = socket_get_status($fd) ;
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fclose($fd) ;
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if($status['timed_out'])
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$retvalue = 1 ;
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else
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$retvalue = ord($readdata) ;
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return $retvalue ;
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// 5 -> Accounting-Response
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// See RFC2866 for this.
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}
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function RADIUS_ACCOUNTING_STOP($ruleno,$username,$sessionid,$start_time,$radiusip,$radiusport,$radiuskey,$clientip,$interimupdate=false) {
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$sharedsecret=$radiuskey ;
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global $debug, $errno, $ipfw, $errstr,$nasHostname;
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$matches = "";
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# $debug = 1 ;
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exec("/bin/hostname", $nasHostname) ;
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if(!$nasHostname[0])
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$nasHostname[0] = "quewall" ;
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$input_pkts = $input_bytes = $output_pkts = $output_bytes = 0 ;
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exec("/sbin/ipfw show {$ruleno}", $ipfw) ;
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preg_match("/(\d+)\s+(\d+)\s+(\d+)\s+skipto/", $ipfw[0], $matches) ;
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$input_pkts = $matches[2] ;
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$input_bytes = $matches[3] ;
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unset($matches) ;
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preg_match("/(\d+)\s+(\d+)\s+(\d+)\s+skipto/", $ipfw[1], $matches) ;
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$output_pkts = $matches[2] ;
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$output_bytes = $matches[3] ;
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$fd = @fsockopen("udp://$radiusip",$radiusport,$errno,$errstr,3) ;
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if(!$fd)
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return 1 ; /* error return */
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/* set 5 second timeout on socket i/o */
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stream_set_timeout($fd, 5) ;
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$nas_ip_address = get_nas_ip();
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if(!isset($clientip)) {
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//if there's no client ip, we'll need to use the NAS ip
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$clientip=$nas_ip_address;
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}
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$ip_exp=explode(".",$clientip);
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if ($debug)
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echo "<br>radius-port: $radiusport<br>radius-host: $radiusip<br>username: $username<hr>\n";
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$thisidentifier=rand()%256;
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$length=4+ // header
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16+ // auth code
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6+ // service type
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2+strlen($username)+ // username
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2+strlen($nasHostname[0])+ // nasIdentifier
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6+ // nasPort
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6+ // nasPortType
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6+ // Acct Status Type
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6+ // Acct RADIUS Authenticated
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2+strlen($sessionid)+ // Acct SessionID
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6+ // Acct terminate
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6+ // Session time
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6+ // input bytes
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6+ // input packets
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6+ // output bytes
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6+ // output packets
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2+strlen($nas_ip_address)+ //Called-Station-ID
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2+strlen($clientip)+ //Calling-Station-ID
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6; //Framed-IP-Address
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if ($interimupdate)
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$acctstatustype = 3;
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else
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$acctstatustype = 2;
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// v v v v v v v v v 1 1 1 1 1 1 1 v
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// Line # 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 E
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$data=pack("CCCCNNNNCCCCCCCCa*CCa*CCCCCCCCCCCCCCCCCCCCCCCCCCa*CCNCCNCCNCCNCCNCCNCCa*CCa*CCCCCC",
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4,$thisidentifier,$length/256,$length%256, // header
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0,0,0,0, // authcode
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6,6,0,0,0,1, // service type
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1,2+strlen($username),$username, // username
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32,2+strlen($nasHostname[0]),$nasHostname[0], // nasIdentifier
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5,6,0,0,0,0, // nasPort
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61,6,0,0,0,15, // nasPortType = Ethernet
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40,6,0,0,0,$acctstatustype, // Acct Status Type
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45,6,0,0,0,1, // Acct RADIUS Authenticated
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44,2+strlen($sessionid),$sessionid, // Acct Session ID
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49,6,1, // Acct Terminate = User Request
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46,6,time() - $start_time, // Session Time
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42,6,$input_bytes, // Input Octets
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47,6,$input_pkts, // Input Packets
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43,6,$output_bytes, // Output Octets
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48,6,$output_pkts, // Output Packets
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30,2+strlen($nas_ip_address),$nas_ip_address, //Called-Station-ID
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31,2+strlen($clientip),$clientip, //Calling-Station-ID
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8,6,$ip_exp[0],$ip_exp[1],$ip_exp[2],$ip_exp[3] //Framed-IP-Address
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);
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/* Generate Accounting Request Authenticator */
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$RA = md5($data.$radiuskey) ;
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// v v v v v v v v v 1 1 1 1 1 1 1 v
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// Line # 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 E
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$data=pack("CCCCH*CCCCCCCCa*CCa*CCCCCCCCCCCCCCCCCCCCCCCCCCa*CCNCCNCCNCCNCCNCCNCCa*CCa*CCCCCC",
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4,$thisidentifier,$length/256,$length%256, // header
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$RA, // authcode
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6,6,0,0,0,1, // service type
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1,2+strlen($username),$username, // username
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32,2+strlen($nasHostname[0]),$nasHostname[0], // nasIdentifier
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5,6,0,0,0,0, // nasPort
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61,6,0,0,0,15, // nasPortType = Ethernet
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40,6,0,0,0,$acctstatustype, // Acct Status Type
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45,6,0,0,0,1, // Acct RADIUS Authenticated
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44,2+strlen($sessionid),$sessionid, // Acct Session ID
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49,6,1, // Acct Terminate = User Request
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46,6,time() - $start_time, // Session Time
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42,6,$input_bytes, // Input Octets
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47,6,$input_pkts, // Input Packets
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43,6,$output_bytes, // Output Octets
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48,6,$output_pkts, // Output Packets
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30,2+strlen($nas_ip_address),$nas_ip_address, //Called-Station-ID
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31,2+strlen($clientip),$clientip, //Calling-Station-ID
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8,6,$ip_exp[0],$ip_exp[1],$ip_exp[2],$ip_exp[3] //Framed-IP-Address
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);
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if($debug) {
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echo "username is $username with len " . strlen($username) ."\n" ;
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echo "nasHostname is {$nasHostname[0]} with len " . strlen($nasHostname[0]) ."\n" ;
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}
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$ret = fwrite($fd,$data) ;
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if( !$ret || ($ret != $length) )
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return 1; /* error return */
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if ($debug)
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echo "<br>writing $length bytes<hr>\n";
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$readdata = fgets($fd,2) ; /* read 1 byte */
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$status = socket_get_status($fd) ;
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fclose($fd) ;
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if($status['timed_out'])
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$retvalue = 1 ;
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else
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$retvalue = ord($readdata) ;
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return $retvalue ;
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// 5 -> Accounting-Response
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// See RFC2866 for this.
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}
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function get_nas_ip() {
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global $config;
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/* static WAN IP address */
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return $config['interfaces']['wan']['ipaddr'];
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}
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?>
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