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external_acl_basic_auth.php
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external_acl_basic_auth.php
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#!/usr/bin/php
<?php
include_once("/usr/share/artica-postfix/ressources/class.radius.auth.inc");
//include_once("/usr/share/artica-postfix/ressources/external_acl_squid_ldap.php");
error_reporting(0);
if(preg_match("#--verbose#", @implode(" ", $argv))){
ini_set('display_errors', 1); ini_set('html_errors',0);ini_set('display_errors', 1);ini_set('error_reporting', E_ALL);error_reporting(1);
error_reporting(1);
$GLOBALS["VERBOSE"]=true;
echo "VERBOSED MODE\n";
}
define(LDAP_OPT_DIAGNOSTIC_MESSAGE, 0x0032);
$GLOBALS["SplashScreenURI"]=null;
$GLOBALS["PID"]=getmypid();
$GLOBALS["STARTIME"]=time();
$GLOBALS["MACTUIDONLY"]=false;
$GLOBALS["SESSION_TIME"]=array();
$GLOBALS["F"] = @fopen("/var/log/squid/basic.auth.log", 'a');
$GLOBALS["TIMELOG"]=0;
$GLOBALS["QUERIES_NUMBER"]=0;
$GLOBALS["TIMELOG_TIME"]=time();
if($argv[1]=="--db"){ufdbguard_checks($argv[2]); die(0);}
$max_execution_time=ini_get('max_execution_time');
LoadSessions();
WLOG("[START]: Starting New process");
while (!feof(STDIN)) {
$content = trim(fgets(STDIN));
if($content<>null){
$array=explode(" ",$content);
$ip = $array[0];
$user=$array[1];
$auth = urldecode($array[2]);
$ID=$array[3];
$authR=explode(" ",$auth);
$TypeAuth=$authR[0];
$Ident=base64_decode($authR[1]);
if(preg_match("#ID([0-9]+)#", $ID,$re)){$ID=$re[1];}
$GLOBALS["OBJECTID"]=$ID;
$identR=explode(":", $Ident);
$username=$identR[0];
unset($identR[0]);
$password=@implode(":", $identR);
if (!CheckAuth($ID,$username,$password,$ip)){
WLOG("[FAILED]: ID = $ID; IP = $ip; ident:$username");
fwrite(STDOUT, "ERR\n");
continue;
}
WLOG("[SUCCESS]: ID = $ID; IP = $ip; ident:$username");
fwrite(STDOUT, "OK\n");
}
}
SaveSessions();
$distanceInSeconds = round(abs(time() - $GLOBALS["STARTIME"]));
$distanceInMinutes = round($distanceInSeconds / 60);
WLOG("[STOP]: <span style='color:#002FB2'>Stopping process v1.0: After ({$distanceInSeconds}s - about {$distanceInMinutes}mn)</span>");
WLOG("[STOP]: <span style='color:#002FB2'>This process was query the LDAP server <strong>{$GLOBALS["QUERIES_NUMBER"]}</strong> times...</span>");
if(isset($GLOBALS["F"])){@fclose($GLOBALS["F"]);}
function CheckAuth($ID,$username,$password,$ipaddr){
$GLOBALS["QUERIES_NUMBER"]++;
$md5=md5("$ID,$username,$password,$ipaddr");
if(isset($GLOBALS["SESSIONS"][$md5])){
$time=$GLOBALS["SESSIONS"][$md5]["TIME"];
$distanceInSeconds = round(abs(time() - $GLOBALS["STARTIME"]));
$distanceInMinutes = round($distanceInSeconds / 60);
if($distanceInMinutes<10){return $GLOBALS["SESSIONS"][$md5]["RESULTS"];}
}
$time=time();
if(PerformAuth($ID,$username,$password)){
$GLOBALS["SESSIONS"][$md5]["TIME"]=$time;
$GLOBALS["SESSIONS"][$md5]["RESULTS"]=PerformAuth($ID,$username,$password);
SaveSessions();
return true;
}
}
function PerformAuth($ID,$username,$password){
$params=unserialize(base64_decode(@file_get_contents("/etc/squid3/AuthParams{$ID}.conf")));
if(!is_array($params)){WLOG("[AUTH]: Failed, /etc/squid3/AuthParams{$ID}.conf cannot be decoded..\n");return false;}
if(isset($params["RAD_SERVER"])){if(check_radius($params,$username,$password)){return true;}}
if(isset($params["AD_LDAP_PORT"])){if(check_activedirectory($params,$username,$password)){return true;}}
if(isset($params["OPENLDAP_SERVER"])){if(check_openldap($params,$username,$password)){return true;}}
}
function check_radius($params,$username,$password){
$RAD_SERVER=$params["RAD_SERVER"];
$RAD_PORT=$params["RAD_PORT"];
$RAD_PASSWORD=$params["RAD_PASSWORD"];
$retval=RADIUS_AUTHENTICATION($username,$password,$RAD_SERVER,$RAD_PORT,$RAD_PASSWORD);
WLOG("[AUTH]: $RAD_SERVER:$RAD_PORT return $retval\n");
if($retval==2){return true;}
return false;
}
function check_activedirectory($params,$username,$password){
$AD_SERVER=$params["AD_SERVER"];
$AD_PORT=$params["AD_LDAP_PORT"];
$ldap_connection=@ldap_connect($AD_SERVER,$AD_PORT);
if(!$ldap_connection){
WLOG("[AUTH]: Failed to connect to DC {$AD_SERVER}:$AD_PORT\n");
@ldap_close();
return false;
}
ldap_set_option($ldap_connection, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldap_connection, LDAP_OPT_REFERRALS, 0);
$bind=ldap_bind($ldap_connection, $username, $password);
if(!$bind){
@ldap_get_option($ldap_connection, LDAP_OPT_DIAGNOSTIC_MESSAGE, $extended_error);
$error=ldap_err2str(ldap_errno($ldap_connection));
WLOG("Failed to login to DC $AD_SERVER `$error ($extended_error)` width $username");
return false;
}
return true;
}
function check_openldap($params,$username,$password){
$OPENLDAP_SERVER=$params["OPENLDAP_SERVER"];
$OPENLDAP_PORT=$params["OPENLDAP_PORT"];
$OPENLDAP_SUFFIX=$params["OPENLDAP_SUFFIX"];
$OPENLDAP_DN=$params["OPENLDAP_DN"];
$OPENLDAP_PASSWORD=$params["OPENLDAP_PASSWORD"];
$OPENLDAP_PASSWORD_ATTRIBUTE=$params["OPENLDAP_PASSWORD_ATTRIBUTE"];
$OPENLDAP_FILTER=$params["OPENLDAP_FILTER"];
$ldap_connection=@ldap_connect($OPENLDAP_SERVER,$OPENLDAP_PORT);
if(!$ldap_connection){
WLOG("[AUTH]: Failed to connect to OpenLDAP server {$OPENLDAP_SERVER}:$OPENLDAP_PORT\n");
@ldap_close();
return false;
}
ldap_set_option($ldap_connection, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldap_connection, LDAP_OPT_REFERRALS, 0);
$bind=ldap_bind($ldap_connection, $OPENLDAP_DN, $OPENLDAP_PASSWORD);
if(!$bind){
@ldap_get_option($ldap_connection, LDAP_OPT_DIAGNOSTIC_MESSAGE, $extended_error);
$error=ldap_err2str(ldap_errno($ldap_connection));
WLOG("Failed to login to DC $OPENLDAP_SERVER `$error` width $OPENLDAP_DN $error ($extended_error)");
return false;
}
$OPENLDAP_FILTER=str_replace("%uid", $username, $OPENLDAP_FILTER);
$filter=array($OPENLDAP_PASSWORD_ATTRIBUTE);
$OPENLDAP_PASSWORD_ATTRIBUTED=strtolower($OPENLDAP_PASSWORD_ATTRIBUTE);
$sr =@ldap_search($ldap_connection,$OPENLDAP_SUFFIX,$OPENLDAP_FILTER,$filter);
if(!$sr){
$error=ldap_err2str(ldap_errno($ldap_connection));
@ldap_get_option($ldap_connection, LDAP_OPT_DIAGNOSTIC_MESSAGE, $extended_error);
WLOG("Unable to find $OPENLDAP_FILTER in $OPENLDAP_SUFFIX $error ($extended_error)");
return false;
}
$hash=@ldap_get_entries($ldap_connection,$sr);
if($hash["count"]==0){WLOG("Unable to find $OPENLDAP_PASSWORD_ATTRIBUTE in $OPENLDAP_SUFFIX");return false;}
for($i=0;$i<$hash[0][$OPENLDAP_PASSWORD_ATTRIBUTED]["count"];$i++){
$Password=$hash[0][$OPENLDAP_PASSWORD_ATTRIBUTED][0];
if($Password==$password){return true;}
}
return false;
}
function LoadSessions(){
$GLOBALS["SESSIONS"]=unserialize(@file_get_contents("/etc/squid3/".basename(__FILE__).".cache"));
WLOG("[START]:Loading ". count($GLOBALS["SESSIONS"]). "sessions in cache...\n");
}
function SaveSessions(){
@file_put_contents("/etc/squid3/".basename(__FILE__).".cache", serialize($GLOBALS["SESSIONS"]));
}
function CleanSessions(){
if(!isset($GLOBALS["SESSIONS"])){return;}
if(!is_array($GLOBALS["SESSIONS"])){return;}
$cachesSessions=unserialize(@file_get_contents("/etc/squid3/".basename(__FILE__).".cache"));
if(isset($cachesSessions)){
if(is_array($cachesSessions)){
while (list ($md5, $array) = each ($cachesSessions)){$GLOBALS["SESSIONS"][$md5]=$array;}
}
}
@file_put_contents("/etc/squid3/".basename(__FILE__).".cache", serialize($GLOBALS["SESSIONS"]));
}
function internal_find_program($strProgram){
global $addpaths;
$arrPath = array('/bin', '/sbin', '/usr/bin', '/usr/sbin', '/usr/local/bin','/usr/local/sbin','/usr/kerberos/bin');
if (function_exists("is_executable")) {foreach($arrPath as $strPath) {$strProgrammpath = $strPath . "/" . $strProgram;if (is_executable($strProgrammpath)) {return $strProgrammpath;}}} else {return strpos($strProgram, '.exe');}
}
function WLOG($text=null){
$text=chop($text);
$filename="/var/log/squid/external-acl-ldap.log";
$trace=@debug_backtrace();
if(isset($trace[1])){$called=" called by ". basename($trace[1]["file"])." {$trace[1]["function"]}() line {$trace[1]["line"]}";}
$date=@date("Y-m-d H:i:s");
if(!isset($GLOBALS["PID"])){$GLOBALS["PID"]=getmypid();}
if($GLOBALS["OBJECTID"]>0){
$filename="/var/log/squid/externalAcl{$GLOBALS["OBJECTID"]}Auth.log";
if (is_file($filename)) {$size=@filesize($filename);if($size>1000000){unlink($filename);}}
$f= @fopen($filename, 'a');
if($GLOBALS["VERBOSE"]){echo "$date [{$GLOBALS["PID"]}]: $text $called\n";}
@fwrite($f, "$date [{$GLOBALS["PID"]}]: $text $called\n");
@fclose($f);
return;
}
if (is_file($filename)) {
$size=@filesize($filename);
if($size>1000000){
@fclose($GLOBALS["F"]);
unlink($filename);
$GLOBALS["F"] = @fopen($filename, 'a');
}
}
if($GLOBALS["VERBOSE"]){echo "$date [{$GLOBALS["PID"]}]: $text $called\n";}
@fwrite($GLOBALS["F"], "$date [{$GLOBALS["PID"]}]: $text $called\n");
}
?>