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< ? php
/*
This code is part of LDAP Account Manager ( http :// www . ldap - account - manager . org / )
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Copyright ( C ) 2010 - 2020 Roland Gruber
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This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; either version 2 of the License , or
( at your option ) any later version .
This program 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 General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation , Inc . , 59 Temple Place , Suite 330 , Boston , MA 02111 - 1307 USA
*/
/**
* Checks if the environment fits to run LAM .
* This code checks if the PHP version is ok , the required extensions are active
* and the memory limit is high enough .
*
* @ author Roland Gruber
* @ package main
*/
/** status messages */
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include_once ( __DIR__ . " /../lib/status.inc " );
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/** config */
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include_once ( __DIR__ . " /../lib/config.inc " );
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// check if PHP >= 5.6.0
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if ( version_compare ( phpversion (), '7.0.0' ) < 0 ) {
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echo " <!DOCTYPE HTML PUBLIC \" -//W3C//DTD HTML 4.01 Transitional//EN \" \" http://www.w3.org/TR/html4/loose.dtd \" > \n \n " ;
echo " <html> \n <head> \n " ;
echo " <meta http-equiv= \" content-type \" content= \" text/html; charset=UTF-8 \" > \n " ;
echo " <meta http-equiv= \" pragma \" content= \" no-cache \" > \n <meta http-equiv= \" cache-control \" content= \" no-cache \" > \n " ;
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printHeaderContents ( 'LDAP Account Manager' , '..' );
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echo " </head><body> \n " ;
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StatusMessage ( " ERROR " , " LAM needs a PHP version which is greater or equal than 7.0.0. " , " Please upgrade your PHP installation. The found version is " . phpversion ());
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echo " <br><br> " ;
echo " </body></html> " ;
exit ();
}
// check environment
$criticalErrors = array ();
// check if PHP has session support
if ( ! function_exists ( 'session_start' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no session support! " , " Please install the session extension for PHP. " );
}
// check if PHP has SPL support
if ( ! function_exists ( 'class_implements' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no SPL support! " , " Please install the SPL extension for PHP. " );
}
// check if PHP has LDAP support
if ( ! function_exists ( 'ldap_search' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no LDAP support! " , " Please install the LDAP extension for PHP. " );
}
// check if PHP has gettext support
if ( ! function_exists ( 'gettext' ) || ! function_exists ( '_' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no gettext support! " , " Please install gettext for PHP. " );
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}
// check if PHP has openssl support
if ( ! function_exists ( 'openssl_x509_parse' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no openssl support! " , " Please install openssl for PHP. " );
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}
// check if PHP has XML support
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if ( ! function_exists ( 'utf8_decode' ) || ! extension_loaded ( 'xml' )) {
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$criticalErrors [] = array ( " ERROR " , " Your PHP has no XML support! " , " Please install the XML extension for PHP. " );
}
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if ( ! extension_loaded ( 'libxml' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no Lib XML support! " , " Please install the Lib XML extension for PHP. " );
}
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if ( ! class_exists ( 'XMLReader' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no XMLReader support! " , " Please active XMLReader for PHP. " );
}
if ( ! class_exists ( 'XMLWriter' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no XMLWriter support! " , " Please active XMLWriter for PHP. " );
}
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// imagick/GD
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if ( ! extension_loaded ( 'imagick' ) && ! extension_loaded ( 'gd' )) {
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$criticalErrors [] = array ( " ERROR " , " Your PHP has no imagick or GD support. " , " Please install the imagick or GD extension for PHP. " );
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}
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// check if PHP has JSON support
if ( ! function_exists ( 'json_encode' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no JSON support! " , " Please install the JSON extension for PHP. " );
}
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// check file permissions
$writableDirs = array ( 'sess' , 'tmp' );
for ( $i = 0 ; $i < sizeof ( $writableDirs ); $i ++ ) {
$path = realpath ( '../' ) . " / " . $writableDirs [ $i ];
if ( ! is_writable ( $path )) {
$criticalErrors [] = array ( " ERROR " , 'The directory %s is not writable for the web server. Please change your file permissions.' , '' , array ( $path ));
}
}
// check session auto start
if ( ini_get ( " session.auto_start " ) == " 1 " ) {
$criticalErrors [] = array ( " ERROR " , " Please deactivate session.auto_start in your php.ini. LAM will not work if it is activated. " );
}
// check memory limit
$memLimit = ini_get ( 'memory_limit' );
if ( isset ( $memLimit ) && ( $memLimit != '' ) && ( substr ( strtoupper ( $memLimit ), strlen ( $memLimit ) - 1 ) == 'M' )) {
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if ( intval ( substr ( $memLimit , 0 , strlen ( $memLimit ) - 1 )) < 128 ) {
$criticalErrors [] = array ( " ERROR " , " Please increase the \" memory_limit \" parameter in your php.ini to at least \" 128M \" . " ,
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" Your current memory limit is $memLimit . " );
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}
}
// check PCRE regex system
if ( !@ preg_match ( '/^\p{L}+$/u' , " abc " )) {
$criticalErrors [] = array ( " ERROR " , " Your PCRE library has no complete Unicode support. Please upgrade libpcre or compile with \" --enable-unicode-properties \" . " );
}
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// check ZIP support for PDF files in file upload
if ( ! extension_loaded ( 'zip' )) {
$criticalErrors [] = array ( " ERROR " , " Your PHP has no ZIP support. " , " Please install the ZIP extension for PHP. " );
}
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// check for main config
$mainConfig = new LAMCfgMain ();
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if ( ! $mainConfig -> isConfigFileExisting () && ! $mainConfig -> installSampleConfig ()) {
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$criticalErrors [] = array ( " ERROR " , " The main config file (config.cfg) does not exist. " , " Please see the manual for installation instructions. " );
}
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// stop login if critical errors occured
if ( sizeof ( $criticalErrors ) > 0 ) {
echo " <!DOCTYPE HTML PUBLIC \" -//W3C//DTD HTML 4.01 Transitional//EN \" \" http://www.w3.org/TR/html4/loose.dtd \" > \n \n " ;
echo " <html> \n <head> \n " ;
echo " <meta http-equiv= \" content-type \" content= \" text/html; charset=UTF-8 \" > \n " ;
echo " <meta http-equiv= \" pragma \" content= \" no-cache \" > \n <meta http-equiv= \" cache-control \" content= \" no-cache \" > \n " ;
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printHeaderContents ( 'LDAP Account Manager' , '..' );
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echo " </head><body> \n " ;
for ( $i = 0 ; $i < sizeof ( $criticalErrors ); $i ++ ) {
call_user_func_array ( " StatusMessage " , $criticalErrors [ $i ]);
echo " <br><br> " ;
}
echo " </body></html> " ;
exit ();
}
?>
