Move define and mkdir earlier in the script

Author: helmo

install/install.php

@@ -153,9 +153,14 @@
 swriteln($inst->lng('    Default values are in [brackets] and can be accepted with <ENTER>.'));
 swriteln($inst->lng('    Tap in "quit" (without the quotes) to stop the installer.'."\n\n"));
 
-//** Check install dir is writable (probably not root or sudo)
-if(!is_writable(dirname('/usr/local/ispconfig'))){
-	die("ERROR: Cannot write to the /usr/local/ispconfig directory. Are you root or sudo ?\n\n");
+//** Check log file is writable (probably not root or sudo)
+define('ISPC_LOG_FILE', $conf['ispconfig_log_dir'] . '/install.log');
+if(!is_writable(dirname(ISPC_LOG_FILE))){
+	die("ERROR: Cannot write to the ".dirname(ISPC_LOG_FILE)." directory. Are you root or sudo ?\n\n");
+}
+
+if(!is_dir($conf['ispconfig_log_dir'])) {
+	mkdir($conf['ispconfig_log_dir'], 0755, true);
 }
 
 //** Check for ISPConfig 2.x versions
@@ -302,11 +307,6 @@
 	$inst->dbmaster = $inst->db;
 }
 
-if(!is_dir($conf['ispconfig_log_dir'])) {
-	mkdir($conf['ispconfig_log_dir'], 0755, true);
-}
-define('ISPC_LOG_FILE', $conf['ispconfig_log_dir'] . '/install.log');
-
 //* Create the mysql database
 $inst->configure_database();