fix #71 find config.php automatically in current and parent directori… (#74)

* fix #71 find config.php automatically. in current and parent directories. Show error message if not found.

CHANGELOG.md

@@ -1,10 +1,12 @@
 # Change Log
-All notable changes to this project will be documented in this file.
+All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
-The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ## [Unreleased]
 
+### Changed
+- find config.php automatically in current and parent directories. Show error message if not found. 
+
 ## [0.2.1] - 2018-07-01
 
 ### Breaking Changes

src/boot.php

@@ -0,0 +1,43 @@
+<?php
+if (version_compare(phpversion(), '7.2', '<')) {
+    die("ERROR! The php version isn't high enough, you need at least 7.2 to run this application! But you have: " . phpversion());
+}
+
+/**
+ * searches for a config-file in the current and parent directories until found. 
+ * @return path to found config file, or FALSE otherwise. 
+ */
+function find_config($filename='config.php'){
+	// Count the deph of the current directory, so we know how far we can go up. 
+	$path_length = substr_count(getcwd(),DIRECTORY_SEPARATOR)
+		+ 1; // also search the current directory
+
+	$dir = '.'; // updated in each loop
+	for($i=0; $i<$path_length;$i++){
+		$config_filename = $dir . DIRECTORY_SEPARATOR . $filename;
+		if(file_exists($config_filename)){
+			return $config_filename;
+		} else {
+			$dir = '../' . $dir;
+		}
+	}
+	return FALSE;
+}
+
+/**
+ * searches and loads the config file. Prints an error if not found. 
+ */
+function load_config(){
+	global $config;
+	$file = find_config();
+	if ( $file !== FALSE) {
+		require_once($file);
+	} else {
+		die('ERROR: Config file not found. Please see the installation instructions in the README.md');
+	}
+}
+
+load_config();
+
+# load php dependencies:
+require_once './backend-libs/autoload.php';

src/index.php

@@ -3,11 +3,8 @@ if (version_compare(phpversion(), '7.2', '<')) {
     die("ERROR! The php version isn't high enough, you need at least 7.2 to run this application! But you have: " . phpversion());
 }
 
-# set the new path of config.php (must be in a safe location outside the `public_html`)
-require_once '../../config.php';
-
-# load php dependencies:
-require_once './backend-libs/autoload.php';
+# load config file and dependencies
+require_once './boot.php';
 
 require_once './user.php';
 require_once './imap_client.php';

src/json-api.php

@@ -1,9 +1,7 @@
 <?php
-# set the new path of config.php (must be in a safe location outside the `public_html`)
-require_once '../../config.php';
 
-# load php dependencies:
-require_once 'backend-libs/autoload.php';
+# load config file and dependencies
+require_once './boot.php';
 
 require_once 'user.php';
 require_once 'imap_client.php';