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