function to install update in the plugin

--HG--
branch : Gsoc14-ryzomAppImprovements

code/ryzom/tools/server/ryzom_ams/ams_lib/translations/en.ini

@@ -75,6 +75,7 @@ ac_error = "Plugin facing some error in activating. Please try again later."
 dc_success = "Plugin de-Activated successfuly."
 dc_error = "Plugin facing some error in de-activating. Please try again later."
 up_success = "Update added successfully. Go to Updates page for installing updates."
+up_install_success = "Update installed successfully."
 
 [install_plugin]
 ip_title = "Install a new Plugin"

code/ryzom/tools/server/ryzom_ams/www/html/func/update_plugin.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * This function is used in installing updates for plugins.
+ * 
+ * @author Shubham Meena, mentored by Matthew Lagoe 
+ */
+function update_plugin() {
+    
+    // if logged in
+    if ( WebUsers :: isLoggedIn() ) {
+        
+        if ( isset( $_GET['id'] ) )
+             {
+            // id of plugin to delete
+            $id = filter_var( $_GET['id'], FILTER_SANITIZE_FULL_SPECIAL_CHARS );
+             $db = new DBLayer( 'lib' );
+             $sth = $db -> executeWithoutParams( "SELECT * FROM plugins INNER JOIN updates ON plugins.Id=updates.PluginId Where plugins.Id=$id" );
+             $row = $sth -> fetch();
+             print_r( $row );
+            
+             // replacing update in the  database
+            Plugincache :: rrmdir( $row['FileName'] );
+             Plugincache :: zipExtraction( $row['UpdatePath'], rtrim( $row['FileName'], strtolower( $row['Name'] ) ) );
+            
+             $db -> update( "plugins", array( 'Info' => $row['UpdateInfo'] ), "Id=$row[Id]" );
+            
+             // deleting the previous update
+            $db -> delete( "updates", array( 'id' => $row['s.no'] ), "s.no=:id" );
+          
+             header( "Location: index.php?page=plugins&result=8" );
+             exit;
+            
+             } 
+        } 
+    }

code/ryzom/tools/server/ryzom_ams/www/html/templates/plugins.tpl

@@ -17,6 +17,7 @@
 					{if isset($smarty.get.result) and $smarty.get.result eq "5"}<div class="alert alert-error"><p>{$dc_success}</p></div>{/if}
 					{if isset($smarty.get.result) and $smarty.get.result eq "6"}<div class="alert alert-error"><p>{$dc_error}</p></div>{/if}
 					{if isset($smarty.get.result) and $smarty.get.result eq "7"}<div class="alert alert-error"><p>{$up_success}</p></div>{/if}
+					{if isset($smarty.get.result) and $smarty.get.result eq "8"}<div class="alert alert-error"><p>{$up_install_success}</p></div>{/if}
 					<div class="box-content">
 						<center><p>{$plugin_info}</p></center>
 						<center>