Initial checkin of resolver.php

- use \\ instead of just \ in FileName
- Use file_put_contents instead of open/write
- Use file_exist instead of stat
- Added /lib directory
- Moved /tftpboot/index.cfg -> /config.ini
- Moved /tftpboot/resolver.php -> /lib/resolver.php
- Added /lib/config.php
  - include /lib/config.php in resolver.php and index.php
- Changed $config array
- Remove print_r($config['main']['base_path']) from config.php
- Add isValidRequest() function
- Use Boolean in tree_base data
- Simplify config['subdirs'] substitution
- Add lib/utils.php file
- Added simple shell/utf/html escape checking
- Added a collection of test cases (we need some more escape checking ones)
- Added lib/logger.php (copied from tftpserver.php, so that it can be reused for that).
- Clarify config.ini logformat
- Update logger implementation
- Replaced index.php with version that uses lib/resolver.php
- Replaced ../etc/nginx/sites-available/tftpboot Example file

lib/config.php

@@ -0,0 +1,80 @@
+<?php
+include_once("logger.php");
+
+$base_path = !empty($_SERVER['DOCUMENT_ROOT']) ? realpath($_SERVER['DOCUMENT_ROOT'] . "/../"): realpath(getcwd()."/../");
+$base_config = Array(
+	'main' => Array(
+		'debug' => 1,
+		'default_language' => 'English_United_States',
+		'log_type' => "NULL",
+		'log_level' => LOG_EMERG
+	),
+	'subdirs' => Array(
+		'tftproot' => 'tftpboot',
+		'firmware' => 'firmware',
+		'settings' => 'settings',
+		'wallpapers' => 'wallpapers',
+		'ringtones' => 'ringtones',
+		'locales' => 'locales',
+		'countries' => 'countries',
+		'languages' => 'languages',
+	)
+);
+$tree_base = Array(
+	'settings' => array('path' => 'tftproot', "strip" => TRUE),
+	'wallpapers' => array('path' => 'tftproot', "strip" => FALSE),
+	'ringtones' => array('path' => 'tftproot', "strip" => TRUE),
+	'locales' => array('path' => 'tftproot', "strip" => TRUE),
+	'firmware' => array('path' => 'tftproot', "strip" => TRUE),
+	'languages' => array('path' => 'locales', "strip" => FALSE),
+	'countries' => array('path' => 'locales', "strip" => FALSE),
+	'default_language' => array('path' => 'locales', "strip" => TRUE),
+);
+
+# Merge config
+$ini_array = parse_ini_file('../config.ini', TRUE, INI_SCANNER_TYPED);
+if (!empty($ini_array)) {
+	$config = array_merge($base_config, $ini_array);
+}
+
+# build new config['subdirs'] paths substituting bases from tree_base
+foreach ($tree_base as $key => $value) {
+	$tmp = $config;
+	if (!empty($tmp['subdirs'][$key])) {
+		if (substr($tmp['subdirs'][$key], 0, 1) !== "/") {
+			if (is_array($tmp['subdirs'][$value['path']])) {
+				$path = $tmp['subdirs'][$value['path']]['path'].'/'.$tmp['subdirs'][$key];
+			} else {
+				$path = $tmp['subdirs'][$value['path']].'/'.$tmp['subdirs'][$key];
+			}
+		}
+		$config['subdirs'][$key] = array('path' => $path, 'strip' => $value['strip']);
+	}
+}
+
+$config['main']['base_path'] = $base_path;
+$config['main']['tftproot'] = (!empty($config['main']['tftproot'])) ? $base_path . "tftpboot" : '/tftpboot';
+
+switch($config['main']['log_type']) {
+	case 'SYSLOG':
+		$logger = new Logger_Syslog($config['main']['log_level']);
+		break;
+	case 'FILE':
+		if (!isempty($config['main']['log_file'])) {
+			$logger = new Logger_Filename($config['main']['log_level'], $config['main']['log_file']);
+		}
+		break;
+	case 'STDOUT':
+		$logger = new Logger_Stdout($config['main']['log_level']);
+		break;
+	case 'STDERR':
+		$logger = new Logger_Stderr($config['main']['log_level']);
+		break;
+	default:
+		$logger = new Logger_Null($config['main']['log_level']);
+}
+
+# Fixup debug
+$print_debug = (!empty($config['main']['debug'])) ? $config['main']['debug'] : 'off';
+$print_debug = ($print_debug == 1) ? 'on' : $print_debug;
+?>