[Mapbender-commits] r2759 - branches/spsneo_dev/mapbender/update

[svn_mapbender at osgeo.org]

Author: spsneo
Date: 2008-08-08 16:06:52 -0400 (Fri, 08 Aug 2008)
New Revision: 2759

Added:
   branches/spsneo_dev/mapbender/update/verify_checksum.php
Log:
function to verify checksum of files

Added: branches/spsneo_dev/mapbender/update/verify_checksum.php
===================================================================
--- branches/spsneo_dev/mapbender/update/verify_checksum.php	                        (rev 0)
+++ branches/spsneo_dev/mapbender/update/verify_checksum.php	2008-08-08 20:06:52 UTC (rev 2759)
@@ -0,0 +1,75 @@
+<?php
+
+function verify_checksum($dir_path) {
+	
+	global $customized_modules;
+	$file_arr = array();
+	$checksum_array = array();
+	
+	//remove slash if it is there at the end of the path
+	if(substr($dir_path, -1) == '/') {
+		$dir_path = substr($dir_path, 0 , -1);
+	}
+	
+	
+	if(!is_readable($dir_path)) {
+		echo $dir_path." is not readable.\nPlease make sure you have privilege to update.\nAborting...\n";
+		exit();
+	}
+	
+	
+	if(!is_file($dir_path.'/checksum.json')) {
+		echo "The checksum.json file does not exist in ".$dir_path.". Probably the administrator has customized the installation.\n";
+		$customized_modules[] = $dir_path;
+		return False;
+	} else {
+		$file_string = file_get_contents($dir_path.'/checksum.json');
+		$checksum_array = json_decode($file_string, true);
+	}
+	
+	$directory = dir($dir_path);
+	while(false !== ($file = $directory->read())) {
+		$file_path = $dir_path.'/'.$file;
+		if(is_file($file_path) && $file != 'checksum.json' && !preg_match("/~$/", $file) && !preg_match("/^\./", $file)) {
+			if(is_readable($file_path)) {
+				$file_arr[$file] = sha1_file($file_path);
+			} else {
+				echo $file_path."is not readable.\nPlease make sure you have privilege to update.\nAborting...\n";
+				exit();
+			}
+		} else if (is_dir($file_path) && !preg_match("/^\./", $file)) {
+			if($file != '.' && $file != '..' ) {
+				verify_checksum($file_path);
+			}
+		} else {
+			
+		}
+	}
+	
+	//Compare the checksums
+	//Compare the number of elements
+	$old_count = count($checksum_array);
+	$new_count = count($file_arr);
+	if($old_count > $new_count) {
+		$difference = $old_count - $new_count;
+		echo $difference." file/files has been deleted.in ".$dir_path."directory\n";
+		$customized_modules[] = $dir_path;
+		return False;
+	} else if($old_count < $new_count) {
+		$difference = $new_count - $old_count;
+		echo $difference." new file/files has been added in ".$dir_path."directory\n";
+		$customized_modules[] = $dir_path;
+		return False;
+	} else {
+		foreach($checksum_array as $file => $checksum) {
+			if($file_arr[$file] != $checksum) {
+				$customized_modules[] = $dir_path;
+				return False;
+			}
+		}
+	}
+	return TRUE;
+}
+
+
+?>