diff -Naur cacti-0.8.6j-old/auth_login.php cacti-0.8.6j/auth_login.php
--- cacti-0.8.6j-old/auth_login.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/auth_login.php	2007-01-23 21:02:52.000000000 -0600
@@ -111,9 +111,16 @@
 'Location' does not work. This seems to fix the bug for me at least... -->
 <form name="login" method="post" action="<?php print basename($_SERVER["PHP_SELF"]);?>">
 
+<?php do_hook("login_before");
+
+$cacti_logo = $config['url_path'] . 'images/auth_login.gif';
+$cacti_logo = do_hook_function('cacti_image', $cacti_logo);
+
+?>
+
 <table align="center">
 	<tr>
-		<td colspan="2"><img src="images/auth_login.gif" border="0" alt=""></td>
+		<td colspan="2"><center><?php if ($cacti_logo != '') { ?><img src="<?php echo $cacti_logo; ?>" border="0" alt=""><?php } ?></center></td>
 	</tr>
 	<?php
 	if ($_REQUEST["action"] == "login") {?>
@@ -155,6 +162,8 @@
 
 <input type="hidden" name="action" value="login">
 
+<?php do_hook("login_after"); ?>
+
 </form>
 
 </body>
diff -Naur cacti-0.8.6j-old/data_sources.php cacti-0.8.6j/data_sources.php
--- cacti-0.8.6j-old/data_sources.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/data_sources.php	2007-01-23 21:02:52.000000000 -0600
@@ -1072,18 +1072,25 @@
 		foreach ($data_sources as $data_source) {
 			$data_template_name = ((empty($data_source["data_template_name"])) ? "<em>None</em>" : $data_source["data_template_name"]);
 			form_alternate_row_color($colors["alternate"],$colors["light"],$i); $i++;
+
+			$ds_table['data_source'] = $data_source;
+			$ds_table['data_input_name'] = $data_source['data_input_name'];
+			$ds_table['active'] = (($data_source["active"] == "on") ? "Yes" : "<span style='color: red;'>No</span>");
+			$ds_table['template_name'] = ((empty($data_source["data_template_name"])) ? "<em>None</em>" : $data_source["data_template_name"]);
+			$ds_table = do_hook_function("data_sources_table", $ds_table);
+
 				?>
 				<td>
 					<a class='linkEditMain' href='data_sources.php?action=ds_edit&id=<?php print $data_source["local_data_id"];?>' title='<?php print $data_source["name_cache"];?>'><?php if ($_REQUEST["filter"] != "") { print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", title_trim($data_source["name_cache"], read_config_option("max_title_data_source"))); }else{ print title_trim($data_source["name_cache"], read_config_option("max_title_data_source")); } ?></a>
 				</td>
 				<td>
-					<?php if ($_REQUEST["filter"] != "") { print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", $data_source["data_input_name"]); }else{ print $data_source["data_input_name"]; } ?></a>
+					<?php if ($_REQUEST["filter"] != "") { print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", $ds_table['data_input_name']); }else{ print $ds_table['data_input_name']; } ?></a>
 				</td>
 				<td>
-					<?php print (($data_source["active"] == "on") ? "Yes" : "<span style='color: red;'>No</span>");?>
+					<?php print $ds_table['active']; ?>
 				</td>
 				<td>
-					<?php if ($_REQUEST["filter"] != "") { print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", $data_template_name); }else{ print $data_template_name; } ?></a>
+					<?php if ($_REQUEST["filter"] != "") { print eregi_replace("(" . preg_quote($_REQUEST["filter"]) . ")", "<span style='background-color: #F8D93D;'>\\1</span>", $ds_table['template_name']); }else{ print $ds_table['template_name']; } ?></a>
 				</td>
 				<td style="<?php print get_checkbox_style();?>" width="1%" align="right">
 					<input type='checkbox' style='margin: 0px;' name='chk_<?php print $data_source["local_data_id"];?>' title="<?php print $data_source["name_cache"];?>">
diff -Naur cacti-0.8.6j-old/graph_image.php cacti-0.8.6j/graph_image.php
--- cacti-0.8.6j-old/graph_image.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/graph_image.php	2007-01-23 21:02:52.000000000 -0600
@@ -46,6 +46,8 @@
 /* flush the headers now */
 ob_end_flush();
 
+do_hook_function('graph_image');
+
 session_write_close();
 
 $graph_data_array = array();
diff -Naur cacti-0.8.6j-old/graph.php cacti-0.8.6j/graph.php
--- cacti-0.8.6j-old/graph.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/graph.php	2007-01-23 14:54:36.000000000 -0600
@@ -94,6 +94,7 @@
 						<td valign='top' style='padding: 3px;' class='noprint'>
 							<a href='graph.php?action=zoom&local_graph_id=<?php print $_GET["local_graph_id"];?>&rra_id=<?php print $rra["id"];?>&view_type=<?php print $_REQUEST["view_type"];?>'><img src='images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
 							<a href='graph.php?action=properties&local_graph_id=<?php print $_GET["local_graph_id"];?>&rra_id=<?php print $rra["id"];?>&view_type=<?php print $_REQUEST["view_type"];?>'><img src='images/graph_properties.gif' border='0' alt='Graph Source/Properties' title='Graph Source/Properties' style='padding: 3px;'></a>
+							<?php do_hook('graph_buttons', array('hook' => 'view', 'local_graph_id' => $_GET["local_graph_id"], 'rra' => $rra["id"], 'view_type' => $_REQUEST["view_type"])); ?>
 						</td>
 					</tr>
 					<tr>
@@ -208,6 +209,7 @@
 					</td>
 					<td valign='top' style='padding: 3px;' class='noprint'>
 						<a href='graph.php?action=properties&local_graph_id=<?php print $_GET["local_graph_id"];?>&rra_id=<?php print $_GET["rra_id"];?>&view_type=<?php print $_REQUEST["view_type"];?>&graph_start=<?php print $graph_start;?>&graph_end=<?php print $graph_end;?>'><img src='images/graph_properties.gif' border='0' alt='Graph Source/Properties' title='Graph Source/Properties' style='padding: 3px;'></a>
+						<?php do_hook('graph_buttons', array('hook' => 'zoom', 'local_graph_id' => $_GET["local_graph_id"], 'rra' =>  $_GET["rra_id"], 'view_type' => $_REQUEST["view_type"])); ?>
 					</td>
 				</tr>
 				<tr>
@@ -239,6 +241,7 @@
 					</td>
 					<td valign='top' style='padding: 3px;'>
 						<a href='graph.php?action=zoom&local_graph_id=<?php print $_GET["local_graph_id"];?>&rra_id=<?php print $_GET["rra_id"];?>&view_type=<?php print $_REQUEST["view_type"];?>'><img src='images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
+						<?php do_hook('graph_buttons', array('hook' => 'properties', 'local_graph_id' => $_GET["local_graph_id"], 'rra' =>  $_GET["rra_id"], 'view_type' => $_REQUEST["view_type"])); ?>
 					</td>
 				</tr>
 				<tr>
@@ -259,4 +262,4 @@
 
 include_once("./include/bottom_footer.php");
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/graphs_new.php cacti-0.8.6j/graphs_new.php
--- cacti-0.8.6j-old/graphs_new.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/graphs_new.php	2007-01-23 21:02:52.000000000 -0600
@@ -405,7 +405,8 @@
 			</td>
 			<td class="textInfo" rowspan="2" valign="top">
 				<span style="color: #c16921;">*</span><a href="host.php?action=edit&id=<?php print $_REQUEST["host_id"];?>">Edit this Host</a><br>
-				<span style="color: #c16921;">*</span><a href="host.php?action=edit">Create New Host</a>
+				<span style="color: #c16921;">*</span><a href="host.php?action=edit">Create New Host</a><br>
+				<?php do_hook("graphs_new_top_links"); ?>
 			</td>
 		</tr>
 			<td>
diff -Naur cacti-0.8.6j-old/graphs.php cacti-0.8.6j/graphs.php
--- cacti-0.8.6j-old/graphs.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/graphs.php	2007-01-23 21:02:52.000000000 -0600
@@ -47,6 +47,8 @@
 	4 => "Convert to Graph Template"
 	);
 
+$graph_actions = do_hook_function('graphs_action_array', $graph_actions);
+
 /* set default action */
 if (!isset($_REQUEST["action"])) { $_REQUEST["action"] = ""; }
 
@@ -357,8 +359,10 @@
 				input_validate_input_number($selected_items[$i]);
 				/* ==================================================== */
 
-				api_resize_graphs($selected_items[$i], $_POST["graph_width"], $_POST["graph_height"]);
+				api_resize_graphs($selected_items[$i], $_POST['graph_width'], $_POST['graph_height']);
 			}
+		} else {
+			do_hook_function('graphs_action_execute', $_POST['drp_action']); 
 		}
 
 		header("Location: graphs.php");
@@ -499,6 +503,11 @@
 				</td>
 			</tr>\n
 			";
+	} else {
+		$save['drp_action'] = $_POST['drp_action'];
+		$save['graph_list'] = $graph_list;
+		$save['graph_array'] = $graph_array;
+		do_hook_function('graphs_action_prepare', $save);
 	}
 
 	if (!isset($graph_array)) {
@@ -1149,4 +1158,4 @@
 	print "</form>\n";
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/host.php cacti-0.8.6j/host.php
--- cacti-0.8.6j-old/host.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/host.php	2007-01-23 21:02:52.000000000 -0600
@@ -44,6 +44,8 @@
 	5 => "Clear Statistics"
 	);
 
+$device_actions = do_hook_function('device_action_array', $device_actions);
+
 /* set default action */
 if (!isset($_REQUEST["action"])) { $_REQUEST["action"] = ""; }
 
@@ -280,6 +282,8 @@
 
 				api_tree_item_save(0, $_POST["tree_id"], TREE_ITEM_TYPE_HOST, $_POST["tree_item_id"], "", 0, read_graph_config_option("default_rra_id"), $selected_items[$i], 1, 1, false);
 			}
+		} else {
+			do_hook_function('device_action_execute', $_POST['drp_action']); 
 		}
 
 		header("Location: host.php");
@@ -385,6 +389,11 @@
 			</tr>\n
 			<input type='hidden' name='tree_id' value='" . $matches[1] . "'>\n
 			";
+	} else {
+		$save['drp_action'] = $_POST['drp_action'];
+		$save['host_list'] = $host_list;
+		$save['host_array'] = (isset($host_array)? $host_array : array());
+		do_hook_function('device_action_prepare', $save);
 	}
 
 	if (!isset($host_array)) {
diff -Naur cacti-0.8.6j-old/include/auth.php cacti-0.8.6j/include/auth.php
--- cacti-0.8.6j-old/include/auth.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/auth.php	2007-01-23 21:02:52.000000000 -0600
@@ -77,7 +77,7 @@
 			<html>
 			<head>
 				<title>Cacti</title>
-				<link href="include/main.css" rel="stylesheet">
+				<link href="<?php echo $config['url_path']; ?>include/main.css" rel="stylesheet">
 			</style>
 			</head>
 
@@ -85,7 +85,7 @@
 
 			<table width="450" align='center'>
 				<tr>
-					<td colspan='2'><img src='images/auth_deny.gif' border='0' alt='Access Denied'></td>
+					<td colspan='2'><img src='<?php echo $config['url_path']; ?>images/auth_deny.gif' border='0' alt='Access Denied'></td>
 				</tr>
 				<tr height='10'><td></td></tr>
 				<tr>
@@ -93,7 +93,7 @@
 					need access to this particular section, please contact the Cacti administrator.</td>
 				</tr>
 				<tr>
-					<td class='textArea' colspan='2' align='center'>( <a href='' onclick='javascript: history.back();'>Return</a> | <a href='logout.php'>Login</a> )</td>
+					<td class='textArea' colspan='2' align='center'>( <a href='' onclick='javascript: history.back();'>Return</a> | <a href='<?php echo $config['url_path']; ?>logout.php'>Login</a> )</td>
 				</tr>
 			</table>
 
diff -Naur cacti-0.8.6j-old/include/config_arrays.php cacti-0.8.6j/include/config_arrays.php
--- cacti-0.8.6j-old/include/config_arrays.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/config_arrays.php	2007-01-23 21:02:52.000000000 -0600
@@ -24,6 +24,8 @@
  +-------------------------------------------------------------------------+
 */
 
+global $menu;
+
 $messages = array(
 	1  => array(
 		"message" => 'Save Successful.',
@@ -452,4 +454,10 @@
 	GDC_SLASH => "/"
 	);
 
-?>
+$plugin_architecture = array(
+	"version" => '1.1'
+	);
+
+do_hook("config_arrays");
+
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/include/config_form.php cacti-0.8.6j/include/config_form.php
--- cacti-0.8.6j-old/include/config_form.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/config_form.php	2007-01-23 21:02:52.000000000 -0600
@@ -25,7 +25,8 @@
 */
 
 if (!defined("VALID_HOST_FIELDS")) {
-	define("VALID_HOST_FIELDS", "(hostname|snmp_community|snmp_username|snmp_password|snmp_version|snmp_port|snmp_timeout)");
+	$string = do_hook_function('valid_host_fields', '(hostname|snmp_community|snmp_username|snmp_password|snmp_version|snmp_port|snmp_timeout)');
+	define("VALID_HOST_FIELDS", $string);
 }
 
 /* file: cdef.php, action: edit */
@@ -1000,4 +1001,6 @@
 		)
 	);
 
-?>
+do_hook("config_form");
+
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/include/config.php cacti-0.8.6j/include/config.php
--- cacti-0.8.6j-old/include/config.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/config.php	2007-01-23 21:02:52.000000000 -0600
@@ -32,6 +32,22 @@
 $database_password = "cactiuser";
 $database_port = "3306";
 
+$plugins = array();
+//$plugins[] = 'thold';
+
+/* Do not edit this line */
+$config = array();
+
+
+/*
+ This is full URL Path to the Cacti installation 
+   For example, if your cacti was accessible by http://server/cacti/ you would user '/cacti/'
+   as the url path.  For just http://server/ use '/'
+*/
+
+$config['url_path'] = '/';
+
+
 /* ----- you probably do not need to change anything below this line ----- */
 
 /* Files that do not need http header information - Command line scripts */
@@ -52,7 +68,7 @@
 	"ss_sql.php"
 );
 
-$config = array();
+
 $colors = array();
 
 /* this should be auto-detected, set it manually if needed */
@@ -66,6 +82,13 @@
 $config["library_path"] = ereg_replace("(.*[\/\\])include", "\\1lib", dirname(__FILE__));
 $config["include_path"] = dirname(__FILE__);
 
+define('URL_PATH', $config['url_path']);
+
+/* include the plugin function, we do this before everything else,
+   incase we want to add hooks to change config options */
+
+include_once($config["include_path"] . "/plugins.php");
+
 /* colors */
 $colors["dark_outline"] = "454E53";
 $colors["dark_bar"] = "AEB4B7";
@@ -169,4 +192,4 @@
 /* current cacti version */
 $config["cacti_version"] = "0.8.6j";
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/include/config_settings.php cacti-0.8.6j/include/config_settings.php
--- cacti-0.8.6j-old/include/config_settings.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/config_settings.php	2007-01-23 21:02:52.000000000 -0600
@@ -928,4 +928,6 @@
 		)
 	);
 
-?>
+do_hook("config_settings");
+
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/include/plugins.php cacti-0.8.6j/include/plugins.php
--- cacti-0.8.6j-old/include/plugins.php	1969-12-31 17:00:00.000000000 -0700
+++ cacti-0.8.6j/include/plugins.php	2007-01-23 21:02:52.000000000 -0600
@@ -0,0 +1,70 @@
+<?php
+
+/*
+ * Copyright (c) 1999-2005 The SquirrelMail Project Team (http://squirrelmail.org)
+ * Licensed under the GNU GPL. For full terms see the file COPYING.
+ */
+
+global $plugin_hooks;
+$plugin_hooks = array();
+
+function use_plugin ($name) {
+    global $config;
+    if (file_exists($config["base_path"] . "/plugins/$name/setup.php")) {
+        include_once($config["base_path"] . "/plugins/$name/setup.php");
+        $function = "plugin_init_$name";
+        if (function_exists($function)) {
+            $function();
+        }
+    }
+}
+
+/**
+ * This function executes a hook.
+ * @param string $name Name of hook to fire
+ * @return mixed $data
+ */
+function do_hook ($name) {
+    global $plugin_hooks;
+    $data = func_get_args();
+    $ret = '';
+
+    if (isset($plugin_hooks[$name]) && is_array($plugin_hooks[$name])) {
+        foreach ($plugin_hooks[$name] as $function) {
+            if (function_exists($function)) {
+                $function($data);
+            }
+        }
+    }
+
+    /* Variable-length argument lists have a slight problem when */
+    /* passing values by reference. Pity. This is a workaround.  */
+    return $data;
+}
+
+function do_hook_function($name,$parm=NULL) {
+    global $plugin_hooks;
+    $ret = $parm;
+
+    if (isset($plugin_hooks[$name])
+          && is_array($plugin_hooks[$name])) {
+        foreach ($plugin_hooks[$name] as $function) {
+            if (function_exists($function)) {
+                $ret = $function($ret);
+            }
+        }
+    }
+
+    /* Variable-length argument lists have a slight problem when */
+    /* passing values by reference. Pity. This is a workaround.  */
+    return $ret;
+}
+
+/* On startup, register all plugins configured for use. */
+if (isset($plugins) && is_array($plugins)) {
+    foreach ($plugins as $name) {
+        use_plugin($name);
+    }
+}
+
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/include/top_graph_header.php cacti-0.8.6j/include/top_graph_header.php
--- cacti-0.8.6j-old/include/top_graph_header.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/top_graph_header.php	2007-01-23 21:02:52.000000000 -0600
@@ -97,17 +97,18 @@
 		if ($_SESSION["custom"]) {
 			print "<meta http-equiv=refresh content='99999'>\r\n";
 		}else{
-			print "<meta http-equiv=refresh content='" . read_graph_config_option("page_refresh") . "'>\r\n";
+			$refresh = do_hook_function("top_graph_refresh", read_graph_config_option("page_refresh"));
+			print "<meta http-equiv=refresh content='" . $refresh . "'>\r\n";
 		}
 	}
 	?>
-	<link href="include/main.css" rel="stylesheet">
+	<link href="<?php echo $config['url_path']; ?>include/main.css" rel="stylesheet">
 
-	<script type="text/javascript" src="include/treeview/ua.js"></script>
-	<script type="text/javascript" src="include/treeview/ftiens4.js"></script>
-	<script type="text/javascript" src="include/jscalendar/calendar.js"></script>
-	<script type="text/javascript" src="include/jscalendar/lang/calendar-en.js"></script>
-	<script type="text/javascript" src="include/jscalendar/calendar-setup.js"></script>
+	<script type="text/javascript" src="<?php echo $config['url_path']; ?>include/treeview/ua.js"></script>
+	<script type="text/javascript" src="<?php echo $config['url_path']; ?>include/treeview/ftiens4.js"></script>
+	<script type="text/javascript" src="<?php echo $config['url_path']; ?>include/jscalendar/calendar.js"></script>
+	<script type="text/javascript" src="<?php echo $config['url_path']; ?>include/jscalendar/lang/calendar-en.js"></script>
+	<script type="text/javascript" src="<?php echo $config['url_path']; ?>include/jscalendar/calendar-setup.js"></script>
 </head>
 
 <body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
@@ -118,13 +119,14 @@
 			<table width="100%" cellspacing="0" cellpadding="0">
 				<tr>
 					<td nowrap>
-						&nbsp;<?php if ($show_console_tab == true) {?><a href="index.php"><img src="images/tab_console.gif" alt="Console" align="absmiddle" border="0"></a><?php }?><a href="graph_view.php"><img src="images/tab_graphs.gif" alt="Graphs" align="absmiddle" border="0"></a>&nbsp;
-					</td>
+						&nbsp;<?php if ($show_console_tab == true) {?><a href="<?php echo $config['url_path']; ?>index.php"><img src="<?php echo $config['url_path']; ?>images/tab_console.gif" alt="Console" align="absmiddle" border="0"></a><?php }?><a href="<?php echo $config['url_path']; ?>graph_view.php"><img src="<?php echo $config['url_path']; ?>images/tab_graphs.gif" alt="Graphs" align="absmiddle" border="0"></a><?php
+						do_hook("top_graph_header_tabs");
+					?>&nbsp;					</td>
 					<td>
-						<img src="images/cacti_backdrop2.gif" align="absmiddle">
+						<img src="<?php echo $config['url_path']; ?>images/cacti_backdrop2.gif" align="absmiddle">
 					</td>
 					<td align="right" nowrap>
-						<?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["graph_settings"] == "on")) { print '<a href="graph_settings.php"><img src="images/tab_settings'; if (basename($_SERVER["PHP_SELF"]) == "graph_settings.php") { print "_down"; } print '.gif" border="0" alt="Settings" align="absmiddle"></a>';}?>&nbsp;&nbsp;<?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["show_tree"] == "on")) {?><a href="graph_view.php?action=tree"><img src="images/tab_mode_tree<?php if ($_REQUEST["action"] == "tree") { print "_down"; }?>.gif" border="0" title="Tree View" alt="Tree View" align="absmiddle"></a><?php }?><?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["show_list"] == "on")) {?><a href="graph_view.php?action=list"><img src="images/tab_mode_list<?php if ($_REQUEST["action"] == "list") { print "_down"; }?>.gif" border="0" title="List View" alt="List View" align="absmiddle"></a><?php }?><?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["show_preview"] == "on")) {?><a href="graph_view.php?action=preview"><img src="images/tab_mode_preview<?php if ($_REQUEST["action"] == "preview") { print "_down"; }?>.gif" border="0" title="Preview View" alt="Preview View" align="absmiddle"></a><?php }?>&nbsp;<br>
+						<?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["graph_settings"] == "on")) { print '<a href="' . $config['url_path'] . 'graph_settings.php"><img src="' . $config['url_path'] . 'images/tab_settings'; if (basename($_SERVER["PHP_SELF"]) == "graph_settings.php") { print "_down"; } print '.gif" border="0" alt="Settings" align="absmiddle"></a>';}?>&nbsp;&nbsp;<?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["show_tree"] == "on")) {?><a href="<?php echo $config['url_path'] ?>graph_view.php?action=tree"><img src="<?php echo $config['url_path'] ?>images/tab_mode_tree<?php if ($_REQUEST["action"] == "tree") { print "_down"; }?>.gif" border="0" title="Tree View" alt="Tree View" align="absmiddle"></a><?php }?><?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["show_list"] == "on")) {?><a href="<?php echo $config['url_path'] ?>graph_view.php?action=list"><img src="<?php echo $config['url_path'] ?>images/tab_mode_list<?php if ($_REQUEST["action"] == "list") { print "_down"; }?>.gif" border="0" title="List View" alt="List View" align="absmiddle"></a><?php }?><?php if ((!isset($_SESSION["sess_user_id"])) || ($current_user["show_preview"] == "on")) {?><a href="<?php echo $config['url_path'] ?>graph_view.php?action=preview"><img src="<?php echo $config['url_path'] ?>images/tab_mode_preview<?php if ($_REQUEST["action"] == "preview") { print "_down"; }?>.gif" border="0" title="Preview View" alt="Preview View" align="absmiddle"></a><?php }?>&nbsp;<br>
 					</td>
 				</tr>
 			</table>
@@ -132,7 +134,7 @@
 	</tr>
 	<tr height="2" colspan="2" bgcolor="#183c8f" class="noprint">
 		<td colspan="2">
-			<img src="images/transparent_line.gif" width="170" height="2" border="0"><br>
+			<img src="<?php echo $config['url_path']; ?>images/transparent_line.gif" width="170" height="2" border="0"><br>
 		</td>
 	</tr>
 	<tr height="5" bgcolor="#e9e9e9" class="noprint">
@@ -144,7 +146,7 @@
 					</td>
 					<td align="right">
 						<?php if ((isset($_SESSION["sess_user_id"])) && ($using_guest_account == false)) { ?>
-						Logged in as <strong><?php print db_fetch_cell("select username from user_auth where id=" . $_SESSION["sess_user_id"]);?></strong> (<a href="logout.php">Logout</a>)&nbsp;
+						Logged in as <strong><?php print db_fetch_cell("select username from user_auth where id=" . $_SESSION["sess_user_id"]);?></strong> (<a href="<?php echo $config['url_path']; ?>logout.php">Logout</a>)&nbsp;
 						<?php } ?>
 					</td>
 				</tr>
@@ -152,10 +154,10 @@
 		</td>
 	</tr>
 	<tr class="noprint">
-		<td bgcolor="#efefef" colspan="1" height="8" style="background-image: url(images/shadow_gray.gif); background-repeat: repeat-x; border-right: #aaaaaa 1px solid;">
-			<img src="images/transparent_line.gif" width="<?php print read_graph_config_option("default_dual_pane_width");?>" height="2" border="0"><br>
+		<td bgcolor="#efefef" colspan="1" height="8" style="background-image: url(<?php echo $config['url_path']; ?>images/shadow_gray.gif); background-repeat: repeat-x; border-right: #aaaaaa 1px solid;">
+			<img src="<?php echo $config['url_path']; ?>images/transparent_line.gif" width="<?php print read_graph_config_option("default_dual_pane_width");?>" height="2" border="0"><br>
 		</td>
-		<td bgcolor="#ffffff" colspan="1" height="8" style="background-image: url(images/shadow.gif); background-repeat: repeat-x;">
+		<td bgcolor="#ffffff" colspan="1" height="8" style="background-image: url(<?php echo $config['url_path']; ?>images/shadow.gif); background-repeat: repeat-x;">
 
 		</td>
 	</tr>
@@ -203,4 +205,4 @@
 			<?php } ?>
 		</td>
 		<?php } ?>
-		<td valign="top">
+		<td valign="top">
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/include/top_header.php cacti-0.8.6j/include/top_header.php
--- cacti-0.8.6j-old/include/top_header.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/include/top_header.php	2007-01-23 21:02:52.000000000 -0600
@@ -24,20 +24,20 @@
  +-------------------------------------------------------------------------+
 */
 
-global $colors;
+global $colors, $config;
 ?>
 <html>
 <head>
 	<title>cacti</title>
-	<link href="include/main.css" rel="stylesheet">
-	<script type="text/javascript" src="include/layout.js"></script>
+	<link href="<?php echo $config['url_path']; ?>include/main.css" rel="stylesheet">
+	<script type="text/javascript" src="<?php echo $config['url_path']; ?>include/layout.js"></script>
 	<?php if (isset($refresh)) {
 	print "<meta http-equiv=refresh content=\"" . $refresh["seconds"] . "; url='" . $refresh["page"] . "'\">";
 	}?>
 </style>
 </head>
 
-<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" background="images/left_border.gif">
+<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" background="<?php echo $config['url_path']; ?>images/left_border.gif">
 
 <table width="100%" cellspacing="0" cellpadding="0">
 	<tr height="37" bgcolor="#a9a9a9">
@@ -45,10 +45,11 @@
 			<table width="100%" cellspacing="0" cellpadding="0">
 				<tr>
 					<td valign="bottom">
-						&nbsp;<a href="index.php"><img src="images/tab_console.gif" alt="Console" align="absmiddle" border="0"></a><a href="graph_view.php"><img src="images/tab_graphs.gif" alt="Graphs" align="absmiddle" border="0"></a>
-					</td>
+						&nbsp;<a href="<?php echo $config['url_path']; ?>index.php"><img src="<?php echo $config['url_path']; ?>images/tab_console.gif" alt="Console" align="absmiddle" border="0"></a><a href="<?php echo $config['url_path']; ?>graph_view.php"><img src="<?php echo $config['url_path']; ?>images/tab_graphs.gif" alt="Console" align="absmiddle" border="0"></a><?php
+						do_hook("top_header_tabs");
+					?></td>
 					<td align="right">
-						<img src="images/cacti_backdrop.gif" align="absmiddle">
+						<img src="<?php echo $config['url_path']; ?>images/cacti_backdrop.gif" align="absmiddle">
 					</td>
 				</tr>
 			</table>
@@ -56,7 +57,7 @@
 	</tr>
 	<tr height="2" bgcolor="#183c8f">
 		<td colspan="3">
-			<img src="images/transparent_line.gif" width="170" height="2" border="0"><br>
+			<img src="<?php echo $config['url_path']; ?>images/transparent_line.gif" width="170" height="2" border="0"><br>
 		</td>
 	</tr>
 	<tr height="5" bgcolor="#e9e9e9">
@@ -68,7 +69,7 @@
 					</td>
 					<td align="right">
 						<?php if (read_config_option("global_auth") == "on") { ?>
-						Logged in as <strong><?php print db_fetch_cell("select username from user_auth where id=" . $_SESSION["sess_user_id"]);?></strong> (<a href="logout.php">Logout</a>)&nbsp;
+						Logged in as <strong><?php print db_fetch_cell("select username from user_auth where id=" . $_SESSION["sess_user_id"]);?></strong> (<a href="<?php echo $config['url_path']; ?>logout.php">Logout</a>)&nbsp;
 						<?php } ?>
 					</td>
 				</tr>
@@ -76,10 +77,10 @@
 		</td>
 	</tr>
 	<tr>
-		<td bgcolor="#f5f5f5" colspan="1" height="8" width="135" style="background-image: url(images/shadow_gray.gif); background-repeat: repeat-x; border-right: #aaaaaa 1px solid;">
-			<img src="images/transparent_line.gif" width="135" height="2" border="0"><br>
-		</td>
-		<td colspan="2" height="8" style="background-image: url(images/shadow.gif); background-repeat: repeat-x;" bgcolor="#ffffff">
+		<td bgcolor="#f5f5f5" colspan="1" height="8" width="135" style="background-image: url(<?php echo $config['url_path']; ?>images/shadow_gray.gif); background-repeat: repeat-x; border-right: #aaaaaa 1px solid;">
+			<img src="<?php echo $config['url_path']; ?>images/transparent_line.gif" width="135" height="2" border="0"><br>
+  		</td>
+		<td colspan="2" height="8" style="background-image: url(<?php echo $config['url_path']; ?>images/shadow.gif); background-repeat: repeat-x;" bgcolor="#ffffff">
 
 		</td>
 	</tr>
@@ -89,9 +90,9 @@
 				<?php draw_menu();?>
 			</table>
 
-			<img src="images/transparent_line.gif" width="135" height="5" border="0"><br>
-			<p align="center"><a href='about.php'><img src="images/cacti_logo.gif" border="0"></a></p>
-			<img src="images/transparent_line.gif" width="135" height="5" border="0"><br>
+			<img src="<?php echo $config['url_path']; ?>images/transparent_line.gif" width="135" height="5" border="0"><br>
+			<p align="center"><a href='<?php echo $config['url_path']; ?>about.php'><img src="<?php echo $config['url_path']; ?>images/cacti_logo.gif" border="0"></a></p>
+			<img src="<?php echo $config['url_path']; ?>images/transparent_line.gif" width="135" height="5" border="0"><br>
 		</td>
 		<td></td>
 	</tr>
diff -Naur cacti-0.8.6j-old/index.php cacti-0.8.6j/index.php
--- cacti-0.8.6j-old/index.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/index.php	2007-01-23 21:02:52.000000000 -0600
@@ -27,6 +27,8 @@
 include("./include/auth.php");
 include("./include/top_header.php");
 
+do_hook("console_before");
+
 ?>
 <table width="98%" align="center">
 	<tr>
@@ -44,6 +46,8 @@
 </table>
 <?php
 
+do_hook("console_after");
+
 include("./include/bottom_footer.php");
 
 ?>
diff -Naur cacti-0.8.6j-old/lib/api_device.php cacti-0.8.6j/lib/api_device.php
--- cacti-0.8.6j-old/lib/api_device.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/api_device.php	2007-01-23 21:02:52.000000000 -0600
@@ -76,6 +76,8 @@
 	$save["snmp_timeout"] = form_input_validate($snmp_timeout, "snmp_timeout", "^[0-9]+$", false, 3);
 	$save["disabled"] = form_input_validate($disabled, "disabled", "", true, 3);
 
+	$save = do_hook_function("api_device_save", $save);
+
 	$host_id = 0;
 
 	if (!is_error_message()) {
@@ -123,4 +125,4 @@
 	return $host_id;
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/functions.php cacti-0.8.6j/lib/functions.php
--- cacti-0.8.6j-old/lib/functions.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/functions.php	2007-01-23 21:02:52.000000000 -0600
@@ -620,6 +620,8 @@
 		}
 	}
 
+	do_hook_function("update_host_status", array('issue_log_message' => $issue_log_message, 'status' => $status, 'host_id' => $host_id, 'hosts' => $hosts));
+
 	db_execute("update host set
 		status = '" . $hosts[$host_id]["status"] . "',
 		status_event_count = '" . $hosts[$host_id]["status_event_count"] . "',
@@ -1323,6 +1325,7 @@
 /* draw_navigation_text - determines the top header navigation text for the current page and displays it to
      the browser */
 function draw_navigation_text() {
+	global $config;
 	$nav_level_cache = (isset($_SESSION["sess_nav_level_cache"]) ? $_SESSION["sess_nav_level_cache"] : array());
 
 	$nav = array(
@@ -1335,7 +1338,7 @@
 		"graph.php:zoom" => array("title" => "Zoom", "mapping" => "graph_view.php:,?,graph.php:view", "level" => "3"),
 		"graph.php:properties" => array("title" => "Properties", "mapping" => "graph_view.php:,?,graph.php:view", "level" => "3"),
 		"graph_settings.php:" => array("title" => "Settings", "mapping" => "graph_view.php:", "url" => "graph_settings.php", "level" => "1"),
-		"index.php:" => array("title" => "Console", "mapping" => "", "url" => "index.php", "level" => "0"),
+		"index.php:" => array("title" => "Console", "mapping" => "", "url" => $config['url_path'] . "index.php", "level" => "0"),
 		"graphs.php:" => array("title" => "Graph Management", "mapping" => "index.php:", "url" => "graphs.php", "level" => "1"),
 		"graphs.php:graph_edit" => array("title" => "(Edit)", "mapping" => "index.php:,graphs.php:", "url" => "", "level" => "2"),
 		"graphs.php:graph_diff" => array("title" => "Change Graph Template", "mapping" => "index.php:,graphs.php:,graphs.php:graph_edit", "url" => "", "level" => "3"),
@@ -1410,6 +1413,8 @@
 		"templates_import.php:" => array("title" => "Import Templates", "mapping" => "index.php:", "url" => "templates_import.php", "level" => "1"),
 		);
 
+	$nav = do_hook_function("draw_navigation_text", $nav);
+
 	$current_page = basename($_SERVER["PHP_SELF"]);
 	$current_action = (isset($_REQUEST["action"]) ? $_REQUEST["action"] : "");
 
@@ -1721,4 +1726,4 @@
 	return $string;
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/html_form.php cacti-0.8.6j/lib/html_form.php
--- cacti-0.8.6j-old/lib/html_form.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/html_form.php	2007-01-23 21:02:52.000000000 -0600
@@ -419,11 +419,13 @@
      on a confirmation form
    @arg $cancel_url - the url to go to when the user clicks 'cancel'
    @arg $action_url - the url to go to when the user clicks 'delete' */
-function form_confirm_buttons($action_url, $cancel_url) { ?>
+function form_confirm_buttons($action_url, $cancel_url) {
+	global $config;
+	?>
 	<tr>
 		<td bgcolor="#E1E1E1">
-			<a href="<?php print $cancel_url;?>"><img src="images/button_cancel.gif" border="0" alt="Cancel" align="absmiddle"></a>
-			<a href="<?php print $action_url . "&confirm=yes";?>"><img src="images/button_delete.gif" border="0" alt="Delete" align="absmiddle"></a>
+			<a href="<?php print $cancel_url;?>"><img src="<?php print $config['url_path'] ?>images/button_cancel.gif" border="0" alt="Cancel" align="absmiddle"></a>
+			<a href="<?php print $action_url . "&confirm=yes";?>"><img src="<?php print $config['url_path'] ?>images/button_delete.gif" border="0" alt="Delete" align="absmiddle"></a>
 		</td>
 	</tr>
 <?php }
@@ -434,6 +436,7 @@
    @arg $force_type - if specified, will force the 'action' button to be either
      'save' or 'create'. otherwise this field should be properly auto-detected */
 function form_save_button($cancel_url, $force_type = "", $key_field = "id") {
+	global $config;
 	if (empty($force_type)) {
 		if (empty($_GET[$key_field])) {
 			$img = "button_create.gif";
@@ -454,8 +457,8 @@
 		<tr>
 			 <td bgcolor="#f5f5f5" align="right">
 				<input type='hidden' name='action' value='save'>
-				<a href='<?php print $cancel_url;?>'><img src='images/button_cancel2.gif' alt='Cancel' align='absmiddle' border='0'></a>
-				<input type='image' src='images/<?php print $img;?>' alt='<?php print $alt;?>' align='absmiddle'>
+				<a href='<?php print $cancel_url;?>'><img src='<?php echo $config['url_path']; ?>images/button_cancel2.gif' alt='Cancel' align='absmiddle' border='0'></a>
+				<input type='image' src='<?php echo $config['url_path']; ?>images/<?php print $img;?>' alt='<?php print $alt;?>' align='absmiddle'>
 			</td>
 		</tr>
 	</table>
@@ -463,4 +466,4 @@
 	<?php
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/html.php cacti-0.8.6j/lib/html.php
--- cacti-0.8.6j-old/lib/html.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/html.php	2007-01-23 14:57:46.000000000 -0600
@@ -88,6 +88,7 @@
    @arg $extra_url_args - extra arguments to append to the url
    @arg $header - html to use as a header */
 function html_graph_area(&$graph_array, $no_graphs_message = "", $extra_url_args = "", $header = "") {
+	global $config;
 	$i = 0;
 	if (sizeof($graph_array) > 0) {
 		if ($header != "") {
@@ -101,10 +102,11 @@
 					<table width='1' cellpadding='0'>
 						<tr>
 							<td>
-								<a href='graph.php?action=view&local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=all'><img src='graph_image.php?local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0<?php print (($extra_url_args == "") ? "" : "&$extra_url_args");?>' border='0' alt='<?php print $graph["title_cache"];?>'></a>
+								<a href='<?php print $config['url_path']; ?>graph.php?action=view&local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=all'><img src='<?php print $config['url_path']; ?>graph_image.php?local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0<?php print (($extra_url_args == "") ? "" : "&$extra_url_args");?>' border='0' alt='<?php print $graph["title_cache"];?>'></a>
 							</td>
 							<td valign='top' style='padding: 3px;' class='noprint'>
-								<a href='graph.php?action=zoom&local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0&<?php print $extra_url_args;?>'><img src='images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
+								<a href='<?php print $config['url_path']; ?>graph.php?action=zoom&local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0&<?php print $extra_url_args;?>'><img src='<?php print $config['url_path']; ?>images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
+								<?php do_hook('graph_buttons', array('hook' => 'graphs', 'local_graph_id' => $graph["local_graph_id"], 'rra' =>  0, 'view_type' => '')); ?>
 							</td>
 						</tr>
 					</table>
@@ -130,6 +132,7 @@
    @arg $extra_url_args - extra arguments to append to the url
    @arg $header - html to use as a header */
 function html_graph_thumbnail_area(&$graph_array, $no_graphs_message = "", $extra_url_args = "", $header = "") {
+	global $config;
 	$i = 0; $k = 0;
 	if (sizeof($graph_array) > 0) {
 		if ($header != "") {
@@ -144,10 +147,11 @@
 				<table width='1' cellpadding='0'>
 					<tr>
 						<td>
-							<a href='graph.php?action=view&rra_id=all&local_graph_id=<?php print $graph["local_graph_id"];?>'><img src='graph_image.php?local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0&graph_height=<?php print read_graph_config_option("default_height");?>&graph_width=<?php print read_graph_config_option("default_width");?>&graph_nolegend=true<?php print (($extra_url_args == "") ? "" : "&$extra_url_args");?>' border='0' alt='<?php print $graph["title_cache"];?>'></a>
+							<a href='<?php print $config['url_path']; ?>graph.php?action=view&rra_id=all&local_graph_id=<?php print $graph["local_graph_id"];?>'><img src='<?php print $config['url_path']; ?>graph_image.php?local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0&graph_height=<?php print read_graph_config_option("default_height");?>&graph_width=<?php print read_graph_config_option("default_width");?>&graph_nolegend=true<?php print (($extra_url_args == "") ? "" : "&$extra_url_args");?>' border='0' alt='<?php print $graph["title_cache"];?>'></a>
 						</td>
 						<td valign='top' style='padding: 3px;'>
-							<a href='graph.php?action=zoom&local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0&<?php print $extra_url_args;?>'><img src='images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
+							<a href='<?php print $config['url_path']; ?>graph.php?action=zoom&local_graph_id=<?php print $graph["local_graph_id"];?>&rra_id=0&<?php print $extra_url_args;?>'><img src='<?php print $config['url_path']; ?>images/graph_zoom.gif' border='0' alt='Zoom Graph' title='Zoom Graph' style='padding: 3px;'></a><br>
+							<?php do_hook('graph_buttons', array('hook' => 'thumbnails', 'local_graph_id' => $graph["local_graph_id"], 'rra' =>  0, 'view_type' => '')); ?>
 						</td>
 					</tr>
 				</table>
@@ -530,6 +534,8 @@
 					}
 
 					while (list($item_sub_url, $item_sub_title) = each($item_title)) {
+						$item_sub_url = $config['url_path'] . $item_sub_url;
+
 						/* indent sub-items */
 						if ($i > 0) {
 							$prepend_string = "---&nbsp;";
@@ -539,7 +545,7 @@
 
 						/* do not put a line between each sub-item */
 						if (($i == 0) || ($draw_sub_items == false)) {
-							$background = "images/menu_line.gif";
+							$background = $config['url_path'] . "images/menu_line.gif";
 						}else{
 							$background = "";
 						}
@@ -568,17 +574,18 @@
 			}else{
 				if ((isset($user_realms[$current_realm_id])) || (!isset($user_auth_realm_filenames{basename($item_url)}))) {
 					/* draw normal (non sub-item) menu item */
+					$item_url = $config['url_path'] . $item_url;
 					if (basename($_SERVER["PHP_SELF"]) == basename($item_url)) {
-						print "<tr><td class='textMenuItemSelected' background='images/menu_line.gif'><strong><a href='$item_url'>$item_title</a></strong></td></tr>\n";
+						print "<tr><td class='textMenuItemSelected' background='" . $config['url_path'] . "images/menu_line.gif'><strong><a href='$item_url'>$item_title</a></strong></td></tr>\n";
 					}else{
-						print "<tr><td class='textMenuItem' background='images/menu_line.gif'><a href='$item_url'>$item_title</a></td></tr>\n";
+						print "<tr><td class='textMenuItem' background='" . $config['url_path'] . "images/menu_line.gif'><a href='$item_url'>$item_title</a></td></tr>\n";
 					}
 				}
 			}
 		}
 	}
 
-	print "<tr><td class='textMenuItem' background='images/menu_line.gif'></td></tr>\n";
+	print "<tr><td class='textMenuItem' background='" . $config['url_path'] . "images/menu_line.gif'></td></tr>\n";
 
 	print '</table></td></tr>';
 }
@@ -588,18 +595,19 @@
    @arg $actions_array - an array that contains a list of possible actions. this array should
      be compatible with the form_dropdown() function */
 function draw_actions_dropdown($actions_array) {
+	global $config;
 	?>
 	<table align='center' width='98%'>
 		<tr>
 			<td width='1' valign='top'>
-				<img src='images/arrow.gif' alt='' align='absmiddle'>&nbsp;
+				<img src='<?php echo $config['url_path']; ?>images/arrow.gif' alt='' align='absmiddle'>&nbsp;
 			</td>
 			<td align='right'>
 				Choose an action:
 				<?php form_dropdown("drp_action",$actions_array,"","","1","","");?>
 			</td>
 			<td width='1' align='right'>
-				<input type='image' src='images/button_go.gif' alt='Go'>
+				<input type='image' src='<?php echo $config['url_path']; ?>images/button_go.gif' alt='Go'>
 			</td>
 		</tr>
 	</table>
@@ -626,4 +634,4 @@
 	</tr>
 <?php }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/html_tree.php cacti-0.8.6j/lib/html_tree.php
--- cacti-0.8.6j-old/lib/html_tree.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/html_tree.php	2007-01-23 21:02:52.000000000 -0600
@@ -886,7 +886,7 @@
 	if (read_graph_config_option("thumbnail_section_tree_1") == "on") {
 		if (read_graph_config_option("timespan_sel") == "on") {
 			print "<td><a href='graph.php?local_graph_id=$local_graph_id&rra_id=all'><img align='middle' alt='$graph_title'
-				src='graph_image.php?local_graph_id=$local_graph_id&rra_id=0&graph_start=" . get_current_graph_start() . "&graph_end=" . get_current_graph_end() . '&graph_height=' .
+				src='graph_image.php?action=view&local_graph_id=$local_graph_id&rra_id=0&graph_start=" . get_current_graph_start() . "&graph_end=" . get_current_graph_end() . '&graph_height=' .
 				read_graph_config_option("default_height") . '&graph_width=' . read_graph_config_option("default_width") . "&graph_nolegend=true' border='0'></a></td>\n";
 
 			/* if we are at the end of a row, start a new one */
@@ -895,7 +895,7 @@
 			}
 		}else{
 			print "<td><a href='graph.php?local_graph_id=$local_graph_id&rra_id=all'><img align='middle' alt='$graph_title'
-				src='graph_image.php?local_graph_id=$local_graph_id&rra_id=$rra_id&graph_start=" . -(db_fetch_cell("select timespan from rra where id=$rra_id")) . '&graph_height=' .
+				src='graph_image.php?action=view&local_graph_id=$local_graph_id&rra_id=$rra_id&graph_start=" . -(db_fetch_cell("select timespan from rra where id=$rra_id")) . '&graph_height=' .
 				read_graph_config_option("default_height") . '&graph_width=' . read_graph_config_option("default_width") . "&graph_nolegend=true' border='0'></a></td>\n";
 
 			/* if we are at the end of a row, start a new one */
@@ -905,10 +905,10 @@
 		}
 	}else{
 		if (read_graph_config_option("timespan_sel") == "on") {
-			print "<td><a href='graph.php?local_graph_id=$local_graph_id&rra_id=all'><img src='graph_image.php?local_graph_id=$local_graph_id&rra_id=0&graph_start=" . get_current_graph_start() . "&graph_end=" . get_current_graph_end() . "' border='0' alt='$graph_title'></a></td>";
+			print "<td><a href='graph.php?local_graph_id=$local_graph_id&rra_id=all'><img src='graph_image.php?action=view&local_graph_id=$local_graph_id&rra_id=0&graph_start=" . get_current_graph_start() . "&graph_end=" . get_current_graph_end() . "' border='0' alt='$graph_title'></a></td>";
 			print "</tr><tr>\n";
 		}else{
-			print "<td><a href='graph.php?local_graph_id=$local_graph_id&rra_id=all'><img src='graph_image.php?local_graph_id=$local_graph_id&rra_id=$rra_id' border='0' alt='$graph_title'></a></td>";
+			print "<td><a href='graph.php?local_graph_id=$local_graph_id&rra_id=all'><img src='graph_image.php?action=view&local_graph_id=$local_graph_id&rra_id=$rra_id' border='0' alt='$graph_title'></a></td>";
 			print "</tr><tr>\n";
 		}
 	}
@@ -978,4 +978,4 @@
 
 	return $html;
 }
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/poller.php cacti-0.8.6j/lib/poller.php
--- cacti-0.8.6j-old/lib/poller.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/poller.php	2007-01-23 21:02:52.000000000 -0600
@@ -228,6 +228,12 @@
 		$limit = "LIMIT 10000";
 	}
 
+	if ($remainder) {
+		$limit = "";
+	}else{
+		$limit = "LIMIT 10000";
+	}
+
 	/* create/update the rrd files */
 	$results = db_fetch_assoc("select
 		poller_output.output,
@@ -296,11 +302,14 @@
 				}
 			}
 		}
+		do_hook_function("poller_output", $rrd_update_array);
 
-		$rrds_processed = rrdtool_function_update($rrd_update_array, $rrdtool_pipe);
+		if (do_hook_function("poller_on_demand", $results)) {
+			$rrds_processed = rrdtool_function_update($rrd_update_array, $rrdtool_pipe);
+		}
 	}
 
     return $rrds_processed;
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/rrd.php cacti-0.8.6j/lib/rrd.php
--- cacti-0.8.6j-old/lib/rrd.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/rrd.php	2007-01-23 21:02:52.000000000 -0600
@@ -471,6 +471,10 @@
 		}
 	}
 
+	$data = do_hook_function("rrdtool_function_graph_cache_check", array('local_graph_id' => $local_graph_id,'rra_id' => $rra_id,'rrd_struc' => $rrd_struc,'graph_data_array' => $graph_data_array, 'return' => false));
+	if (isset($data['return']) && $data['return'] != false)
+		return $data['return'];
+
 	/* find the step and how often this graph is updated with new data */
 	$ds_step = db_fetch_cell("select
 		data_template_data.rrd_step
@@ -1145,15 +1149,21 @@
 			rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, RRDTOOL_OUTPUT_NULL, $rrd_struc);
 			return 0;
 		}else{
+			$graph_data_array = do_hook_function("prep_graph_array", $graph_data_array);
+
 			if (isset($graph_data_array["output_flag"])) {
 				$output_flag = $graph_data_array["output_flag"];
 			}else{
 				$output_flag = RRDTOOL_OUTPUT_GRAPH_DATA;
 			}
 
-			return rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, $output_flag, $rrd_struc);
+			$output = rrdtool_execute("graph $graph_opts$graph_defs$txt_graph_items", false, $output_flag, $rrd_struc);
+
+			do_hook_function("rrdtool_function_graph_set_file", array('output' => $output, 'local_graph_id' => $local_graph_id, 'rra_id' => $rra_id));
+
+			return $output;
 		}
 	}
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/lib/variables.php cacti-0.8.6j/lib/variables.php
--- cacti-0.8.6j-old/lib/variables.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/lib/variables.php	2007-01-23 21:02:52.000000000 -0600
@@ -179,6 +179,9 @@
 	$string = str_replace($l_escape_string . "host_snmp_timeout" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["snmp_timeout"], $string);
 	$string = str_replace($l_escape_string . "host_id" . $r_escape_string, $_SESSION["sess_host_cache_array"][$host_id]["id"], $string);
 
+	$temp = do_hook_function('substitute_host_data', array('string' => $string, 'l_escape_string' => $l_escape_string, 'r_escape_string' => $r_escape_string, 'host_id' => $host_id));
+	$string = $temp['string'];
+
 	return $string;
 }
 
@@ -207,4 +210,4 @@
 	return $string;
 }
 
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/plugins/index.php cacti-0.8.6j/plugins/index.php
--- cacti-0.8.6j-old/plugins/index.php	1969-12-31 17:00:00.000000000 -0700
+++ cacti-0.8.6j/plugins/index.php	2007-01-23 21:02:52.000000000 -0600
@@ -0,0 +1,5 @@
+<?php
+
+header("Location:../index.php");
+
+?>
diff -Naur cacti-0.8.6j-old/poller.php cacti-0.8.6j/poller.php
--- cacti-0.8.6j-old/poller.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/poller.php	2007-01-23 21:02:52.000000000 -0600
@@ -40,6 +40,8 @@
 include_once($config["base_path"] . "/lib/graph_export.php");
 include_once($config["base_path"] . "/lib/rrd.php");
 
+do_hook("poller_top");
+
 /* Record Start Time */
 list($micro,$seconds) = split(" ", microtime());
 $start = $seconds + $micro;
@@ -188,7 +190,6 @@
 
 			/* insert poller stats into the settings table */
 			db_execute("replace into settings (name,value) values ('stats_poller','$cacti_stats')");
-			db_execute("truncate table poller_output");
 
 			break;
 		}else {
@@ -261,4 +262,6 @@
 }
 // End Mainline Processing
 
-?>
+do_hook("poller_bottom");
+
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/user_admin.php cacti-0.8.6j/user_admin.php
--- cacti-0.8.6j-old/user_admin.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/user_admin.php	2007-01-23 15:11:46.000000000 -0600
@@ -72,11 +72,13 @@
 		include_once("include/bottom_footer.php");
 		break;
 	default:
-		include_once("include/top_header.php");
+		if (!do_hook_function("user_admin_action", $_REQUEST["action"])) {
+			include_once("include/top_header.php");
 
-		user();
+			user();
 
-		include_once("include/bottom_footer.php");
+			include_once("include/bottom_footer.php");
+		}
 		break;
 }
 
@@ -158,6 +160,7 @@
 		$save["policy_trees"] = form_input_validate((isset($_POST["policy_trees"]) ? $_POST["policy_trees"] : $_POST["_policy_trees"]), "policy_trees", "", true, 3);
 		$save["policy_hosts"] = form_input_validate((isset($_POST["policy_hosts"]) ? $_POST["policy_hosts"] : $_POST["_policy_hosts"]), "policy_hosts", "", true, 3);
 		$save["policy_graph_templates"] = form_input_validate((isset($_POST["policy_graph_templates"]) ? $_POST["policy_graph_templates"] : $_POST["_policy_graph_templates"]), "policy_graph_templates", "", true, 3);
+		$save = do_hook_function("user_admin_setup_sql_save", $save);
 
 		if (!is_error_message()) {
 			$user_id = sql_save($save, "user_auth");
@@ -200,6 +203,8 @@
 					policy_hosts='" . $_POST["policy_hosts"] . "',
 					policy_graph_templates='" . $_POST["policy_graph_templates"] . "'
 					where id=" . $_POST["id"]);
+			}else{
+				do_hook("user_admin_user_save");
 			}
 		}
 	}
@@ -695,6 +700,7 @@
 				<td <?php print (($_GET["action"] == "graph_settings_edit") ? "bgcolor='silver'" : "bgcolor='#DFDFDF'");?> nowrap='nowrap' width='130' align='center' class='tab'>
 					<span class='textHeader'><a href='user_admin.php?action=graph_settings_edit&id=<?php print $_GET["id"];?>'>Graph Settings</a></span>
 				</td>
+				<?php do_hook("user_admin_tab");?>
 				<td></td>
 			</tr>
 		</table>
@@ -708,7 +714,9 @@
 	}elseif ($_GET["action"] == "graph_perms_edit") {
 		graph_perms_edit();
 	}else{
-		user_realms_edit();
+		if (do_hook_function("user_admin_run_action", $_REQUEST["action"])) {
+			user_realms_edit();
+		}
 	}
 
 	form_save_button("user_admin.php");
@@ -791,4 +799,4 @@
 	}
 	html_end_box();
 }
-?>
+?>
\ No newline at end of file
diff -Naur cacti-0.8.6j-old/utilities.php cacti-0.8.6j/utilities.php
--- cacti-0.8.6j-old/utilities.php	2007-01-23 21:01:57.000000000 -0600
+++ cacti-0.8.6j/utilities.php	2007-01-23 21:02:52.000000000 -0600
@@ -122,11 +122,14 @@
 		include_once("./include/bottom_footer.php");
 		break;
 	default:
-		include_once("./include/top_header.php");
 
-		utilities();
+		if (!do_hook_function("utilities_action", $_REQUEST["action"])) {
+			include_once("./include/top_header.php");
 
-		include_once("./include/bottom_footer.php");
+			utilities();
+
+			include_once("./include/bottom_footer.php");
+		}
 		break;
 }
 
@@ -973,7 +976,9 @@
 	</tr>
 	<?php
 
+	do_hook("utilities_list");
+
 	html_end_box();
 }
 
-?>
+?>
\ No newline at end of file