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 Signed-off-by: Diederik de Groot <ddegroot@talon.nl>
2020-02-15 23:20:46 +01:00
parent caa3827bc6
commit ad87422c60
5 changed files with 120 additions and 89 deletions
--- a/lib/resolver.php
+++ b/lib/resolver.php
@@ -0,0 +1,114 @@
+#!/usr/bin/php
+<?php
+include_once("config.php");
+
+/* Todo:
+ - setup logging
+ - read config.file
+ - improve error handling
+ - secure urlencoding/urldecoding
+ - don't allow browsing
+ - check source ip-range
+ - check HTTPHeader for known BrowserTypes
+*/
+
+class Resolver {
+	private $isDirty = FALSE;
+	private $cache = array();
+	private $config;
+	function __construct($config) {
+		$this->config = $config;
+		if(file_exists($this->config['main']['cache_filename'])) {
+	 		$this->cache = unserialize(file_get_contents($config['main']['cache_filename'])); 
+		} else {
+			$this->buildCleanCache();
+		}
+	}
+	function __destruct() {
+		//print_r($this->cache);
+		if ($this->isDirty) {
+			if (!file_put_contents($this->config['main']['cache_filename'], serialize($this->cache))) {
+				throw new Exception("Could not write to file '".$this->config['cache_filename']."' at Resolver::destruct");
+			}
+		}
+	}
+	function searchForFile($filename) {
+		foreach($this->config['subdirs'] as $key => $value) {
+			if ($key === "firmware" || $key === "tftproot" ) {
+				continue;
+			}
+			$path = realpath($this->config['main']['base_path'] . "/" . $value['path'] . "/$filename");
+			if (file_exists($path)) {
+				 $this-> addFile($filename, $path);
+				 return $path;
+			}
+		}
+		throw new Exception("File '$filename' does not exist");
+	}
+	function buildCleanCache() {
+		foreach($this->config['subdirs'] as $key =>$value) {
+			if ($key === "tftproot") {
+				continue;
+			}
+			$path = $this->config['main']['base_path'] . "/" . $value['path'] . "/";
+			$dir_iterator = new RecursiveDirectoryIterator($path);
+			$iterator = new RecursiveIteratorIterator($dir_iterator, RecursiveIteratorIterator::SELF_FIRST);
+			foreach ($iterator as $file) {
+				if ($file->isFile()) {
+					if ($value['strip'] === 1) {
+						$this->addFile($file->getFileName(), $file->getPathname());
+					} else {
+						$subdir = basename(dirname($file->getPathname()));
+						$this->addFile('$subpath/'.$file->getFileName(), $file->getPathname());
+					}
+				}
+			}
+		}
+		$this->isDirty  = TRUE;
+	}
+	function addFile($hash, $path) {
+		//echo 'Adding $hash\n';
+		$this->cache[$hash] = $path;
+		$this->isDirty  =TRUE;
+	}
+	function removeFile($hash) {
+		//echo 'Removing $hash\n';
+		unset($this->cache[$hash]);
+		$this->isDirty = TRUE;
+	}
+	function resolve($request) /* canthrow */ {
+		$path = '';
+		if (array_key_exists($request, $this->cache)) {
+			if ($path = $this->cache[$request]) {
+				if (!file_exists($path)) {
+					 $this->removeFile($request);
+					 throw new Exception("File '$request' does not exist on FS");
+				}
+				return $path;
+			}
+		}
+		if ($this->searchForFile($request)) {
+			return $this->cache[$request];
+		}
+		return $path;
+	}
+}
+
+$resolver = new Resolver($config);
+try {
+	print($resolver->resolve("jar70sccp.9-4-2ES26.sbn")."\n");
+	print($resolver->resolve("Russian_Russian_Federation/be-sccp.jar")."\n");
+	print($resolver->resolve("Spain/g3-tones.xml")."\n");
+	print($resolver->resolve("320x196x4/Chan-SCCP-b.png")."\n");
+} catch (Exception $e) {
+	print($e . "\n");
+}
+try {
+	print($resolver->resolve("XMLDefault.cnf.xml")."\n");
+} catch (Exception $e) {
+	print($e . "\n");
+}
+
+unset($resolver);
+#unlink($CACHEFILE_NAME);
+?>