From 5451dac903ba5279d12cb402a64e22483a1f1cd1 Mon Sep 17 00:00:00 2001
From: Steve Clay <steve@mrclay.org>
Date: Fri, 12 Oct 2012 22:05:20 -0400
Subject: CLI installer: manual enable/auto disable, checking for empty config
 values

---
 install/ElggInstaller.php        |  2 +-
 install/cli/sample_installer.php | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/install/ElggInstaller.php b/install/ElggInstaller.php
index 03c84a43e..934b38d28 100644
--- a/install/ElggInstaller.php
+++ b/install/ElggInstaller.php
@@ -157,7 +157,7 @@ class ElggInstaller {
 			'password',
 		);
 		foreach ($requiredParams as $key) {
-			if (!array_key_exists($key, $params)) {
+			if (empty($params[$key])) {
 				$msg = elgg_echo('install:error:requiredfield', array($key));
 				throw new InstallationException($msg);
 			}
diff --git a/install/cli/sample_installer.php b/install/cli/sample_installer.php
index 954169a6a..0bae0cd23 100644
--- a/install/cli/sample_installer.php
+++ b/install/cli/sample_installer.php
@@ -3,10 +3,27 @@
  * Sample cli installer script
  */
 
+$enabled = false;
+
+// Do not edit below this line. //////////////////////////////
+
+
+if (!$enabled) {
+	echo "To enable this script, change \$enabled to true.\n";
+	echo "You *must* disable this script after a successful installation.\n";
+	exit;
+}
+
+if (PHP_SAPI !== 'cli') {
+	echo "You must use the command line to run this script.";
+	exit;
+}
+
 require_once(dirname(dirname(__FILE__)) . "/ElggInstaller.php");
 
 $installer = new ElggInstaller();
 
+// none of the following may be empty
 $params = array(
 	// database parameters
 	'dbuser' => '',
@@ -28,3 +45,21 @@ $params = array(
 
 // install and create the .htaccess file
 $installer->batchInstall($params, TRUE);
+
+// at this point installation has completed (otherwise an exception halted execution).
+
+// try to rewrite the script to disable it.
+if (is_writable(__FILE__)) {
+	$code = file_get_contents(__FILE__);
+	if (preg_match('~\\$enabled\\s*=\\s*(true|1)\\s*;~i', $code)) {
+		// looks safe to rewrite
+		$code = preg_replace('~\\$enabled\\s*=\\s*(true|1)\\s*;~i', '$enabled = false;', $code);
+		file_put_contents(__FILE__, $code);
+
+		echo "\nNote: This script has been disabled for your safety.\n";
+		exit;
+	}
+}
+
+echo "\nWarning: You *must* disable this script by setting \$enabled = false;.\n";
+echo "Leaving this script enabled could endanger your installation.\n";
-- 
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