bugfix

for bug fixes

LICENSE

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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

README.md

@@ -1,33 +1,51 @@
-yourls-authmgr-plugin
+YOURLS-AuthMgrPlus
 =====================
 
-This plugin adds role-based access controls (RBAC) to YOURLS. By assigning users to roles like "Editor" and "Contributor" you can limit the changes they are permitted to make.
+This plugin manages essential YOURLS functions and separates user data with role-based access controls (RBAC). With access controls enabled, you can safely delegate access to the admin pages and API while keeping link data private. You share an installation, log on, add a link, and nobody else sees it.
 
-With access controls enabled, you can safely delegate access to the admin pages.
+Features
+--------
+-  Easily assign users to roles
+-  Easily fine tune role permissions
+-  IPv4 based Authentication (optional)
+-  All plugin pages, including main management page, hidden to non-admins by default. Easy to unblock pages.
+-  Plenty of hooks to filter Roles, Role Capabilities, and _any_ of the default data environemnt (such as plugin page visibility)
+-  Fine(r) tuned API access
+-  PHP 8 compatible
+-  No tracking of admins or editors by default
+
+Requirements
+------------
+- YOURLS 1.7.3 +
+- Incompatible Plugins: 
+	- nicwaller's [`authmgr`](https://github.com/nicwaller/yourls-authmgr-plugin)
+	- Ian Barber's [`Seperate Users`](https://github.com/ianbarber/Yourls-Separate-Users)
 
 Installation
 ------------
-1. Download the [latest release](https://github.com/nicwaller/yourls-authmgr-plugin/tags) of yourls-authmgr-plugin.
-1. Copy the plugin folder into your `user/plugins` folder for YOURLS.
-1. Set up the parameters for authmgr (details below)
+1. Download the [latest release](https://github.com/joshp23/YOURLS-AuthMgrPlus) of this plugin.
+1. Copy the `authMgrPlus` folder into your `user/plugins` folder for YOURLS.
+1. Set up some parameters for authMgrPlus (details below)
 1. Activate the plugin with the plugin manager in the YOURLS admin interface.
+1. If you have pre-existing links in your database, you will have to manually asign them a user via an sql querry.
 
 Default Roles
 -------------
 The default roles are set up as follows:
 
 Role          | Capabilities
---------------|-------------------------------------------------
-Administrator | No Limits
-Editor        | Cannot manage plugins
-Contributor   | Cannot manage plugins, edit URLs, or delete URLs
+--------------|---------------------------------------------------------------------------------------------------
+Administrator | Can manage plugins, no limits, not tracked on any
+Editor        | Can add (+API), access own and all others', edit & delete own & anon URL's, not tracked on any
+Contributor   | Can add (+API), access own and anon's, and edit & delete own URLs, not tracked on own
+Anonymous     | Can add and access (see stats, etc) anon links (If public)
 
 Configuration
 -------------
 Add role assignments to your `user/config.php` file.
 
 ```
-$authmgr_role_assignment = array(
+$amp_role_assignment = array(
   'administrator' => array(
     'your_username',
   ),
@@ -43,7 +61,33 @@ $authmgr_role_assignment = array(
 You can also designate a range of IP addresses that will automatically be granted all capabilities. By default, all accesses from IPv4 localhost (127.0.0.0/8) are granted full access.
 
 ```
-$authmgr_admin_ipranges = array(
+$amp_admin_ipranges = array(
     '127.0.0.0/8',
 );
 ```
+Plugin management and plugin pages are available to admins only by default. Individual pages can be exposed to non-admin roles like so:
+```
+$amp_allowed_plugin_pages = array(
+	'sample_page',
+	'another_plugin_slug'
+);
+```
+Explore the code to see how to set `$amp_role_capabilities` and `$amp_anon_capabilities`. These are set to defaults in the `amp_env_check()` function.
+
+You can also assign a default role to all logged-in users that have no explicit role (note, case sensative):
+```
+$amp_default_role = "Editor";
+```
+
+
+#### NOTE:
+This is a fork of nicwaller's [Authmgr](https://github.com/nicwaller/yourls-authmgr-plugin) merged with Ian barber's [Separate Users](https://github.com/joshp23/Yourls-Separate-Users) plugin. Both code bases underwent heavy rewrites, and have been extensively updated and tightly integrated here, resulting in a lean and highly functional user authorization management environment.
+
+### Tips
+Dogecoin: DARhgg9q3HAWYZuN95DKnFonADrSWUimy3
+
+License
+-------
+Copyright 2018 Joshua Panter  
+Copyright 2013 Nicholas Waller (code@nicwaller.com)  
+Copyright 2011 Ian Barber  

authMgrPlus/:plugin.php

@@ -0,0 +1,690 @@
+<?php
+/*
+Plugin Name: Auth Manager Plus
+Plugin URI:  https://github.com/joshp23/YOURLS-AuthMgrPlus
+Description: Role Based Access Controlls with seperated user data for authenticated users
+Version:     2.3.1
+Author:      Josh Panter, nicwaller, Ian Barber <ian.barber@gmail.com>
+Author URI:  https://unfettered.net
+*/
+
+// No direct call
+if( !defined( 'YOURLS_ABSPATH' ) ) die();
+
+/****************** SET UP CONSTANTS ******************/
+
+class ampRoles { 
+	const Administrator = 'Administrator';
+	const Editor        = 'Editor';
+	const Contributor   = 'Contributor';
+}
+
+class ampCap {
+	const ShowAdmin     = 'ShowAdmin';
+	const AddURL        = 'AddURL';
+	const DeleteURL     = 'DeleteURL';
+	const EditURL       = 'EditURL';
+	const ShareURL     	= 'ShareURL';
+	const Traceless		= 'Traceless';
+	const ManageAnonURL = 'ManageAnonURL';
+	const ManageUsrsURL = 'ManageUsrsURL';
+	const ManagePlugins = 'ManagePlugins';
+	const API           = 'API';
+	const APIu          = 'APIu';
+	const ViewStats     = 'ViewStats';
+	const ViewAll       = 'ViewAll';
+}	
+
+/********** Add hooks to intercept functionality in CORE **********/
+
+yourls_add_action( 'load_template_infos', 'amp_intercept_stats' );
+function amp_intercept_stats() {
+	if ( 'YOURLS_PRIVATE_INFOS' === true ) {
+		amp_require_capability( ampCap::ViewStats );
+	}
+}
+
+yourls_add_action( 'api', 'amp_intercept_api' );
+function amp_intercept_api() {
+	if ( 'YOURLS_PRIVATE_API' === true ) {
+		if ( isset( $_REQUEST['shorturl'] ) || isset( $_REQUEST['stats'] ) ) {
+			amp_require_capability( ampCap::APIu );
+		} else {
+			amp_require_capability( ampCap::API );
+		}
+	}
+}
+yourls_add_action( 'auth_successful', function() {
+	if( yourls_is_admin() ) amp_intercept_admin();
+} );
+
+/**
+ * YOURLS processes most actions in the admin page. It would be ideal
+ * to add a unique hook for each action, but unfortunately we need to
+ * hook the admin page load itself, and try to figure out what action
+ * is intended.
+ *
+ * TODO: look for these hooks
+ *
+ * At this point, reasonably assume that the current request is for
+ * a rendering of the admin page.
+ */
+function amp_intercept_admin() {
+	amp_require_capability( ampCap::ShowAdmin );
+
+	// we use this GET param to send up a feedback notice to user
+	if ( isset( $_GET['access'] ) && $_GET['access']=='denied' ) {
+		yourls_add_notice('Access Denied');
+	}
+
+	// allow manipulation of this list ( be mindfull of extending Auth mp Capability class if needed )
+	$action_capability_map = yourls_apply_filter( 'amp_action_capability_map',  
+			array(	'add' => ampCap::AddURL,
+					'delete' => ampCap::DeleteURL,
+					'edit_display' => ampCap::EditURL,
+					'edit_save' => ampCap::EditURL,
+					'activate' => ampCap::ManagePlugins,
+					'deactivate' => ampCap::ManagePlugins,
+				) );
+
+	// Key actions like Add/Edit/Delete are AJAX requests
+	if ( yourls_is_Ajax() ) {
+
+		// Define some boundaries for ownership
+		// Allow some flexability with those boundaries
+		$restricted_actions = yourls_apply_filter( 'amp_restricted_ajax_actions', 
+			array( 	'edit_display',
+					'edit_save',
+					'delete'
+				) );
+
+		$action_keyword = $_REQUEST['action'];
+		$cap_needed = $action_capability_map[$action_keyword];
+
+		// Check the action against those boundaries
+		if ( in_array( $action_keyword, $restricted_actions) ) {
+			$keyword = $_REQUEST['keyword'];
+			$do = amp_manage_keyword( $keyword, $cap_needed );
+		} else {
+			$do = amp_have_capability( $cap_needed );
+		}
+
+		if ( $do !== true ) {
+			$err = array();
+			$err['status'] = 'fail';
+			$err['code'] = 'error:authorization';
+			$err['message'] = 'Access Denied';
+			$err['errorCode'] = '403';
+			echo json_encode( $err );
+			die();
+		}
+	}
+
+	// Intercept requests for plugin management
+	if( isset( $_SERVER['REQUEST_URI'] ) && preg_match('/\/admin\/plugins\.php.*/', $_SERVER['REQUEST_URI'] ) ) {
+		// Is this a plugin page request?
+		if ( isset( $_REQUEST['page'] ) ) {
+			// Is this an allowed plugin?
+			global $amp_allowed_plugin_pages;
+			if ( amp_have_capability( ampCap::ManagePlugins ) !== true) {
+				$r = $_REQUEST['page'];
+				if(!in_array($r, $amp_allowed_plugin_pages ) ) {
+					yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
+				}
+			}
+		} else {
+		// Should this user touch plugins?
+			if ( amp_have_capability( ampCap::ManagePlugins ) !== true) {
+				yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
+			}
+		}
+
+		// intercept requests for global plugin management actions
+		if (isset( $_REQUEST['plugin'] ) ) {
+			$action_keyword = $_REQUEST['action'];
+			$cap_needed = $action_capability_map[$action_keyword];
+			if ( $cap_needed !== NULL && amp_have_capability( $cap_needed ) !== true) {
+				yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
+			}
+		}
+	}
+}
+
+/* 
+ * Cosmetic filter: removes disallowed buttons from link list per short link
+*/
+
+yourls_add_filter( 'table_add_row_action_array', 'amp_ajax_button_check' );
+function amp_ajax_button_check( $actions, $keyword ) {
+	// define the amp capabilities that map to the buttons
+	$button_cap_map = array('stats' => ampCap::ViewStats,
+							'share' => ampCap::ShareURL,
+							'edit' => ampCap::EditURL,
+							'delete' => ampCap::DeleteURL,
+							);
+
+	$button_cap_map = yourls_apply_filter( 'amp_button_capability_map',  $button_cap_map );
+
+	// define restricted buttons
+	$restricted_buttons = array('delete', 'edit');
+	if ( 'YOURLS_PRIVATE_INFOS' === true )
+		$restricted_buttons += ['stats'];
+				
+	$restricted_buttons = yourls_apply_filter( 'amp_restricted_buttons', $restricted_buttons );
+
+	// unset any disallowed buttons
+	foreach ( $actions as $action => $vars ) {
+		$cap_needed = $button_cap_map[$action];
+		if ( in_array( $action, $restricted_buttons) )
+			$show = amp_manage_keyword( $keyword, $cap_needed );
+		else
+			$show = amp_have_capability( $cap_needed );
+		if (!$show) 
+			unset( $actions[$action] );
+	}
+	return $actions;
+}
+
+/* 
+ * Cosmetic filter: removes disallowed plugins from link list
+*/
+
+yourls_add_filter( 'admin_sublinks', 'amp_admin_sublinks' );
+function amp_admin_sublinks( $links ) {
+	
+	global $amp_allowed_plugin_pages;
+
+	if( empty( $links['plugins'] ) ) {
+	
+		unset($links['plugins']);
+		
+	} else {
+	
+		if ( amp_have_capability( ampCap::ManagePlugins ) !== true) {
+			if(!empty($links['plugins'])) {
+				foreach( $links['plugins'] as $link => $ar ) {
+					if(!in_array($link, $amp_allowed_plugin_pages) )
+						unset($links['plugins'][$link]);
+				}
+			}
+		}
+		if(!empty($links['plugins'])) {
+			sort($links['plugins']);
+		}
+	}
+	return $links;
+}
+
+/*
+ * Cosmetic filter: displays currently available roles
+ * by hovering mouse over the username in logout link.
+ */
+
+yourls_add_filter( 'logout_link', 'amp_html_append_roles' );
+function amp_html_append_roles( $original ) {
+	if ( amp_is_valid_user() ) {
+		$listcaps = implode(', ', amp_current_capabilities());
+		return '<div title="'.$listcaps.'">'.$original.'</div>';
+	} else {
+		return $original;
+	}
+}
+
+/**************** CAPABILITY TESTING ****************/
+
+/*
+ * If capability is not permitted in current context, then abort.
+ * This is the most basic way to intercept unauthorized usage.
+ */
+// TODO: API responses!
+function amp_require_capability( $capability ) {
+	if ( !amp_have_capability( $capability ) ) {
+		// If the user can't view admin interface, return a plain error.
+		if ( !amp_have_capability( ampCap::ShowAdmin ) ) {
+		//	header("HTTP/1.0 403 Forbidden");
+			die('Require permissions to show admin interface.');
+		}
+		// Otherwise, render errors in admin interface
+		yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
+		die();
+	}
+}
+
+// Heart of system - Can the user do "X"?
+function amp_have_capability( $capability ) {
+
+	global $amp_anon_capabilities;
+	global $amp_role_capabilities;
+	global $amp_admin_ipranges;
+	global $amp_default_role;
+
+	// Make sure the environment has been setup
+	amp_env_check();
+
+	// Check anon capabilities
+	$return = in_array( $capability, $amp_anon_capabilities );
+
+	// Check user-role based auth
+	if( !$return ) {
+		// Only users have roles
+		if ( !amp_is_valid_user() ) //XXX
+			return false;
+		// List capabilities of particular user role
+		$user = defined('YOURLS_USER') ? YOURLS_USER : NULL;
+		$user_caps = array();
+		if ( amp_user_is_assigned ( $user ) )
+		    foreach ( $amp_role_capabilities as $rolename => $rolecaps )
+		        if ( amp_user_has_role( $user, $rolename ) )
+				    $user_caps = array_merge( $user_caps, $rolecaps );
+		
+		elseif ( isset( $amp_default_role )  && in_array ($amp_default_role, array_keys( $amp_role_capabilities ) ) )
+		    $user_caps = $amp_role_capabilities [ $amp_default_role ];
+		
+		$user_caps = array_unique( $user_caps );
+		// Is the requested capability in this list?
+		$return =  in_array( $capability, $user_caps );
+	}
+
+	// Is user connecting from an admin designated IP?
+	if( !$return ) {
+		// the array of ranges: '127.0.0.0/8' will always be admin
+		foreach ($amp_admin_ipranges as $range) {
+			$return = amp_cidr_match( $_SERVER['REMOTE_ADDR'], $range );
+			if( $return ) 
+				break;
+		}
+	}
+
+	return $return;
+}
+
+// Determine if a user has been assigned a role
+function amp_user_is_assigned ( $username ) {
+
+    global $amp_role_assignment;
+    if ( empty( $amp_role_assignment ) )
+	    return false;
+	    
+	$return = false;
+	
+    foreach ( $amp_role_assignment as $role )
+        if ( in_array( $username, $role ) ) {
+            $return = true;
+            break;
+        }
+    return $return;
+}
+
+// Determine whether a specific user has a role.
+function amp_user_has_role( $username, $rolename ) {
+
+	global $amp_role_assignment;
+
+	// if no role assignments are created, grant everything FIXME: Make 'admin'
+	// so the site still works even if stuff is configured wrong
+	if ( empty( $amp_role_assignment ) )
+		return true;
+
+	// do this the case-insensitive way
+	// the entire array was made lowercase in environment check
+	$username = strtolower($username);
+	$rolename = strtolower($rolename);
+
+	// if the role doesn't exist, give up now.
+	if ( !in_array( $rolename, array_keys( $amp_role_assignment ) ) )
+		return false;
+
+	$users_in_role = $amp_role_assignment[$rolename];
+	return in_array( $username, $users_in_role );	
+}
+
+/********************* KEYWORD OWNERSHIP ************************/
+
+// Filter out restricted access to keyword data in...
+// Admin list
+yourls_add_filter( 'admin_list_where', 'amp_admin_list_where' );
+function amp_admin_list_where($where) {
+
+	if ( amp_have_capability( ampCap::ViewAll ) )
+		return $where; // Allow admin/editor users to see the lot. 
+
+	$user = defined('YOURLS_USER') ? YOURLS_USER : NULL;
+	$where['sql'] = $where['sql'] . " AND (`user` = :user OR `user` IS NULL) ";
+	$where['binds']['user'] = $user;
+
+	return $where;
+}
+
+// API stats
+yourls_add_filter( 'api_url_stats', 'amp_api_url_stats' );
+function amp_api_url_stats( $return, $shorturl ) {
+
+	$keyword = str_replace( YOURLS_SITE . '/' , '', $shorturl ); // accept either 'http://ozh.in/abc' or 'abc'
+	$keyword = yourls_sanitize_string( $keyword );
+	$keyword = addslashes($keyword);
+
+	if( ( !defined('YOURLS_PRIVATE_INFOS') || YOURLS_PRIVATE_INFOS !== false ) 
+			&& !amp_access_keyword($keyword) )
+		return array('simple' => "URL is owned by another user", 'message' => 'URL is owned by another user', 'errorCode' => 403);
+
+	else
+		return $return;
+}
+
+// Info pages
+yourls_add_action( 'pre_yourls_infos', 'amp_pre_yourls_infos' );
+function amp_pre_yourls_infos( $keyword ) {
+
+	if( yourls_is_private() && !amp_access_keyword($keyword) ) {
+
+		if ( !amp_is_valid_user() ) 
+			yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
+		else
+			yourls_redirect( YOURLS_SITE, 302 );
+	}
+}
+
+// DB stats
+yourls_add_filter( 'get_db_stats', 'amp_get_db_stats' );
+function amp_get_db_stats( $return, $where ) {
+
+	if ( amp_have_capability( ampCap::ViewAll ) )
+		return $return; // Allow admin/editor users to see the lot. 
+
+	// or... filter results
+	global $ydb;
+	$table_url = YOURLS_DB_TABLE_URL;
+	$user = defined('YOURLS_USER') ? YOURLS_USER : NULL;
+
+	$where['sql'] = $where['sql'] . " AND (`user` = :user OR `user` IS NULL) ";
+	$where['binds']['user'] = $user;
+
+	$sql = "SELECT COUNT(keyword) as count, SUM(clicks) as sum FROM `$table_url` WHERE 1=1 " . $where['sql'];
+	$binds = $where['binds'];
+
+	$totals = $ydb->fetchObject($sql, $binds);
+
+	$return = array( 'total_links' => $totals->count, 'total_clicks' => $totals->sum );
+
+	return $return;
+}
+
+// Fine tune track-me-not
+yourls_add_action('redirect_shorturl', 'amp_tracking');
+function amp_tracking( $u, $k = false ) {
+	if( amp_is_valid_user() && ( amp_keyword_owner($k) || amp_have_capability( ampCap::Traceless ) ) ) {
+		// No logging
+		yourls_add_filter( 'shunt_update_clicks', 	function(  ) { return true; } );
+		yourls_add_filter( 'shunt_log_redirect', 	function(  ) { return true; } );
+	}
+}
+/********************* HOUSEKEEPING ************************/
+// Validate environment setup
+function amp_env_check() {
+	global $amp_anon_capabilities;
+	global $amp_role_capabilities;
+	global $amp_role_assignment;
+	global $amp_admin_ipranges;
+	global $amp_allowed_plugin_pages;
+
+	if ( !isset( $amp_anon_capabilities) ) {
+		$amp_anon_capabilities = array();
+	}
+
+	if ( !isset( $amp_role_capabilities) ) {
+		$amp_role_capabilities = array(
+			ampRoles::Administrator => array(
+				ampCap::ShowAdmin,
+				ampCap::AddURL,
+				ampCap::EditURL,
+				ampCap::DeleteURL,
+				ampCap::ShareURL,
+				ampCap::Traceless,
+				ampCap::ManageAnonURL,
+				ampCap::ManageUsrsURL,
+				ampCap::ManagePlugins,
+				ampCap::API,
+				ampCap::APIu,
+				ampCap::ViewStats,
+				ampCap::ViewAll,
+			),
+			ampRoles::Editor => array(
+				ampCap::ShowAdmin,
+				ampCap::AddURL,
+				ampCap::EditURL,
+				ampCap::DeleteURL,
+				ampCap::ShareURL,
+				ampCap::Traceless,
+				ampCap::ManageAnonURL,
+				ampCap::APIu,
+				ampCap::ViewStats,
+				ampCap::ViewAll,
+			),
+			ampRoles::Contributor => array(
+				ampCap::ShowAdmin,
+				ampCap::AddURL,
+				ampCap::EditURL,
+				ampCap::DeleteURL,
+				ampCap::ShareURL,
+				ampCap::APIu,
+				ampCap::ViewStats,
+			),
+		);
+	}
+
+	if ( !isset( $amp_role_assignment ) ) {
+		$amp_role_assignment = array();
+	}
+
+	if ( !isset( $amp_admin_ipranges ) ) {
+		$amp_admin_ipranges = array(
+			'127.0.0.0/8',
+		);
+	}
+
+	if ( !isset( $amp_allowed_plugin_pages ) ) {
+		$amp_allowed_plugin_pages = array(
+		);
+	}
+
+	// convert role assignment table to lower case if it hasn't been done already
+	// this makes searches much easier!
+	$amp_role_assignment_lower = array();
+	foreach ( $amp_role_assignment as $key => $value ) {
+		$t_key = strtolower( $key );
+		$t_value = array_map('strtolower', $value);
+		$amp_role_assignment_lower[$t_key] = $t_value;
+	}
+	$amp_role_assignment = $amp_role_assignment_lower;
+	unset($amp_role_assignment_lower);
+
+	return true;
+}
+
+// Activation: add the user column to the URL table if not added
+yourls_add_action('activated_plugin', 'amp_activated');
+function amp_activated() {
+	global $ydb; 
+    
+	$table = YOURLS_DB_TABLE_URL;
+	$sql = "DESCRIBE `".$table."`";
+	$results = $ydb->fetchObjects($sql);
+
+	$activated = false;
+	foreach($results as $r) {
+		if($r->Field == 'user') {
+			$activated = true;
+		}
+	}
+	if(!$activated) {
+		if ($version) {
+			$sql = "ALTER TABLE `".$table."` ADD `user` VARCHAR(255) NULL";
+			$insert = $ydb->fetchAffected($sql);
+		} else {
+			$ydb->query("ALTER TABLE `".$table."` ADD `user` VARCHAR(255) NULL");
+
+		}
+	}
+}
+
+/***************** HELPER FUNCTIONS ********************/
+
+// List currently available capabilities
+function amp_current_capabilities() {
+	$current_capabilities = array();
+	$all_capabilities = array(
+		ampCap::ShowAdmin,
+		ampCap::AddURL,
+		ampCap::EditURL,
+		ampCap::DeleteURL,
+		ampCap::ShareURL,
+		ampCap::Traceless,
+		ampCap::ManageAnonURL,
+		ampCap::ManageUsrsURL,
+		ampCap::ManagePlugins,
+		ampCap::API,
+		ampCap::APIu,
+		ampCap::ViewStats,
+		ampCap::ViewAll,
+	);
+
+	foreach ( $all_capabilities as $cap ) {
+		if ( amp_have_capability( $cap ) ) {
+			$current_capabilities[] = $cap;
+		}
+	}
+	// allow manipulation of this list ( be mindfull of extending the ampCap class if needed )
+	$current_capabilities = yourls_apply_filter( 'amp_current_capabilities', $current_capabilities);
+	return $current_capabilities;
+}
+
+// Check for IP in a range
+// from: http://stackoverflow.com/questions/594112/matching-an-ip-to-a-cidr-mask-in-php5
+function amp_cidr_match($ip, $range) {
+	list ($subnet, $bits) = explode('/', $range);
+	$ip = ip2long($ip);
+	$subnet = ip2long($subnet);
+	$mask = -1 << (32 - $bits);
+	$subnet &= $mask; # nb: in case the supplied subnet wasn't correctly aligned
+	return ($ip & $mask) == $subnet;
+}
+
+// Check user access to a keyword ( can they see it )
+function amp_access_keyword( $keyword ) {
+
+	$users = array( YOURLS_USER !== false ? YOURLS_USER : NULL , NULL );
+	$owner = amp_keyword_owner( $keyword );
+	if ( amp_have_capability( ampCap::ViewAll ) || in_array( $owner , $users ) )
+		return true;
+}
+
+// Check user rights to a keyword ( can manage it )
+function amp_manage_keyword( $keyword, $capability ) {
+	$return = false; 				// default is to deny access
+	if ( amp_is_valid_user() ) { 	// only authenticated users can manaage keywords
+		$owner = amp_keyword_owner($keyword);
+		$user = defined('YOURLS_USER') ? YOURLS_USER : NULL;
+		if ( amp_have_capability( ampCap::ManageUsrsURL )							// Admin?
+			|| ( $owner === NULL && amp_have_capability( ampCap::ManageAnonURL ) )	// Editor?
+			|| ( $owner === $user && amp_have_capability( $capability ) ) )			// Self Edit?
+			$return = true;
+	}
+	return $return;
+
+}
+
+// Check keyword ownership
+function amp_keyword_owner( $keyword ) {
+	global $ydb; 
+	$table = YOURLS_DB_TABLE_URL;
+	$binds = array( 'keyword' => $keyword );
+	$sql = "SELECT * FROM `$table` WHERE `keyword` = :keyword";
+	$result = $ydb->fetchOne($sql, $binds);
+	return $result['user'];
+}
+
+// Record user info on keyword creation
+yourls_add_action( 'insert_link', 'amp_insert_link' );
+function amp_insert_link($actions) {
+	global $ydb; 
+
+	$keyword = $actions[2];
+	$user = defined('YOURLS_USER') ? YOURLS_USER : NULL;
+	$table = YOURLS_DB_TABLE_URL;
+
+	// Insert $keyword against $username
+	$binds = array( 'user' => $user,
+					'keyword' => $keyword);
+	$sql = "UPDATE `$table` SET  `user` = :user WHERE `keyword` = :keyword";
+	$result = $ydb->fetchAffected($sql, $binds);
+}
+
+// Quick user validation without triggering hooks
+function amp_is_valid_user() {
+
+	$valid = defined( 'YOURLS_USER' ) ? true : false;
+
+	if ( !$valid ) {
+
+		if ( yourls_is_API() 
+			&& isset( $_REQUEST['timestamp'] ) && !empty($_REQUEST['timestamp'] ) 
+			&& isset( $_REQUEST['signature'] ) && !empty($_REQUEST['signature'] ) )
+			$valid = yourls_check_signature_timestamp();
+		elseif ( yourls_is_API() 
+			&& !isset( $_REQUEST['timestamp'] ) 
+			&& isset( $_REQUEST['signature'] ) && !empty( $_REQUEST['signature'] ) )
+			$valid = yourls_check_signature();
+		elseif ( isset( $_REQUEST['username'] ) && isset( $_REQUEST['password'] )
+			&&  !empty( $_REQUEST['username'] ) && !empty( $_REQUEST['password']  ) )
+			$valid = yourls_check_username_password();
+		elseif ( !yourls_is_API() && isset( $_COOKIE[ yourls_cookie_name() ] ) )
+			$valid = yourls_check_auth_cookie();
+	}
+
+	return $valid;
+}
+
+yourls_add_action( 'html_footer', 'amp_format_table_javascript' );
+
+function amp_format_table_javascript() {
+        echo <<<JS
+
+<script>
+if($("body").hasClass("index")) {
+	document.querySelector("#main_table tfoot th").colSpan = 7;
+	document.querySelector("#nourl_found td").colSpan = 7;
+}
+</script>
+
+JS;
+}
+
+function array_insert($array, $position, $insert_array) {
+	$first_array = array_splice($array, 0, $position);
+	$array = array_merge($first_array, $insert_array, $array);
+
+	return $array;
+}
+
+yourls_add_filter('table_head_cells', 'amp_username_table_head');
+function amp_username_table_head( $cells ) {
+	$user_head = array( 'username' => 'Username' );
+	$cells = array_insert($cells, 5, $user_head);
+	return $cells;
+}
+
+yourls_add_filter('table_add_row_cell_array', 'amp_add_user_row');
+function amp_add_user_row( $cells, $keyword ) {
+	$username = amp_keyword_owner($keyword);
+	$user_cell = array(
+		'username' => array(
+			'template' => '%username%',
+			'username' => $username,
+		)
+	);
+	$cells = array_insert($cells, 5, $user_cell);
+
+	return $cells;
+}
+
+?>

authmgr/plugin.php

@@ -1,387 +0,0 @@
-<?php
-/*
-Plugin Name: Authorization Manager
-Plugin URI:  https://github.com/nicwaller/yourls-authmgr-plugin
-Description: Restrict classes of users to specific functions
-Version:     0.9.2
-Author:      nicwaller
-Author URI:  https://github.com/nicwaller
-*/
-
-// No direct call
-if( !defined( 'YOURLS_ABSPATH' ) ) die();
-
-/****************** SET UP CONSTANTS ******************/
-
-/**
- * This plugin uses filter chains to evaluate whether specific actions
- * should be allowed to proceed. The filter names are defined here.
- */
-define( 'AUTHMGR_ALLOW',   'filter_authmgr_allow'   );
-define( 'AUTHMGR_HASROLE', 'filter_authmgr_hasrole' );
-
-// Define constants used for naming roles (but they don't work in config.php)
-class AuthmgrRoles {
-	const Administrator = 'Administrator';
-	const Editor        = 'Editor';
-	const Contributor   = 'Contributor';
-}
-
-// Define constants used for naming capabilities
-class AuthmgrCapability {
-	const ShowAdmin     = 'ShowAdmin'; // only display admin panel
-	const AddURL        = 'AddURL';
-	const DeleteURL     = 'DeleteURL';
-	const EditURL       = 'EditURL';
-	const ManagePlugins = 'ManagePlugins';
-	const API           = 'API';
-	const ViewStats     = 'ViewStats';
-}	
-
-
-/********** Add hooks to intercept functionality in CORE ********/
-
-yourls_add_action( 'load_template_infos', 'authmgr_intercept_stats' );
-function authmgr_intercept_stats() {
-	authmgr_require_capability( AuthmgrCapability::ViewStats );
-}
-
-yourls_add_action( 'api', 'authmgr_intercept_api' );
-function authmgr_intercept_api() {
-	authmgr_require_capability( AuthmgrCapability::API );
-}
-
-
-yourls_add_action( 'auth_successful', 'authmgr_intercept_admin' );
-/**
- * YOURLS processes most actions in the admin page. It would be ideal
- * to add a unique hook for each action, but unfortunately we need to
- * hook the admin page load itself, and try to figure out what action
- * is intended.
- *
- * At this point, reasonably assume that the current request is for
- * a rendering of the admin page.
- */
-function authmgr_intercept_admin() {
-	authmgr_require_capability( AuthmgrCapability::ShowAdmin );
-
-        // we use this GET param to send up a feedback notice to user
-        if ( isset( $_GET['access'] ) && $_GET['access']=='denied' ) {
-                yourls_add_notice('Access Denied');
-        }
-
-        $action_capability_map = array(
-      		'add' => AuthmgrCapability::AddURL,
-        	'delete' => AuthmgrCapability::DeleteURL,
-        	'edit_display' => AuthmgrCapability::EditURL,
-        	'edit_save' => AuthmgrCapability::EditURL,
-        	'activate' => AuthmgrCapability::ManagePlugins,
-        	'deactivate' => AuthmgrCapability::ManagePlugins,
-	);
-
-	// intercept requests for plugin management
-	if ( isset( $_REQUEST['plugin'] ) ) {
-                $action_keyword = $_REQUEST['action'];
-                $cap_needed = $action_capability_map[$action_keyword];
-                if ( $cap_needed !== NULL && authmgr_have_capability( $cap_needed ) !== true) {
-                        yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
-                }
-	}
-
-	// Key actions like Add/Edit/Delete are AJAX requests
-	if ( yourls_is_Ajax() ) {
-		$action_keyword = $_REQUEST['action'];
-		$cap_needed = $action_capability_map[$action_keyword];
-		if ( authmgr_have_capability( $cap_needed ) !== true) {
-			$err = array();
-			$err['status'] = 'fail';
-			$err['code'] = 'error:authorization';
-			$err['message'] = 'Access Denied';
-			$err['errorCode'] = '403';
-			echo json_encode( $err );
-			die();
-		}
-	}
-}
-
-yourls_add_filter( 'logout_link', 'authmgr_html_append_roles' );
-/**
- * This is a cosmetic filter that makes it possible to see which roles are
- * currently available, just by mousing over the username in the logout link.
- */
-function authmgr_html_append_roles( $original ) {
-        $authenticated = yourls_is_valid_user();
-        if ( $authenticated === true ) {
-		$listcaps = implode(', ', authmgr_enumerate_current_capabilities());
-		return '<div title="'.$listcaps.'">'.$original.'</div>';
-	} else {
-		return $original;
-	}
-}
-
-/**************** CAPABILITY TEST/ENUMERATION ****************/
-
-/*
- * If capability is not permitted in current context, then abort.
- * This is the most basic way to intercept unauthorized usage.
- */
-function authmgr_require_capability( $capability ) {
-	if ( !authmgr_have_capability( $capability ) ) {
-		// If the user can't view admin interface, return a plain error.
-		if ( !authmgr_have_capability( AuthmgrCapability::ShowAdmin ) ) {
-			header("HTTP/1.0 403 Forbidden");
-			die('Require permissions to show admin interface.');
-		}
-		// Otherwise, render errors in admin interface
-                yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
-		die();
-	}
-}
-
-/*
- * Returns array of capabilities currently available.
- */
-function authmgr_enumerate_current_capabilities() {
-	$current_capabilities = array();
-	$all_capabilities = authmgr_enumerate_all_capabilities();
-	
-	foreach ( $all_capabilities as $cap ) {
-		if ( authmgr_have_capability( $cap ) ) {
-			$current_capabilities[] = $cap;
-		}
-	}
-	
-	return $current_capabilities;
-}
-
-function authmgr_enumerate_all_capabilities() {
-	return array(
-		AuthmgrCapability::ShowAdmin,
-		AuthmgrCapability::AddURL,
-		AuthmgrCapability::DeleteURL,
-		AuthmgrCapability::EditURL,
-		AuthmgrCapability::ManagePlugins,
-		AuthmgrCapability::API,
-		AuthmgrCapability::ViewStats,
-	);
-}
-
-/*
- * This is where everything comes together.
- * 
- * Use the "allow" filter chain to see if the requested capability
- * is permitted in the current context. Any function in the filter
- * chain can change the response, but well-behaved functions will
- * only change 'false' to 'true', never the other way around.
- */
-function authmgr_have_capability( $capability ) {
-        return yourls_apply_filter( AUTHMGR_ALLOW, false, $capability);
-}
-
-/******************* FILTERS THAT GRANT CAPABILITIES *****************************/
-/* Whether an action is permitted is decided by running a filter chain. */
-/*********************************************************************************/
-
-/*
- * What capabilities are always available, including anonymous users?
- */
-yourls_add_filter( AUTHMGR_ALLOW, 'authmgr_check_anon_capability', 5 );
-function authmgr_check_anon_capability( $original, $capability ) {
-	global $authmgr_anon_capabilities;
-
-	// Shortcut - trust approval given by earlier filters
-	if ( $original === true ) return true;
-
-	// Make sure the anon rights list has been setup
-	authmgr_environment_check();
-
-	// Check list of capabilities that don't require authentication
-	return in_array( $capability, $authmgr_anon_capabilities );
-}
-
-/*
- * What capabilities are available through role assignments to the active user?
- */
-yourls_add_filter( AUTHMGR_ALLOW, 'authmgr_check_user_capability', 10 );
-function authmgr_check_user_capability( $original, $capability ) {
-	global $authmgr_role_capabilities;
-
-	// Shortcut - trust approval given by earlier filters
-	if ( $original === true ) return true;
-
-	// ensure $authmgr_role_capabilities has been set up
-	authmgr_environment_check();
-
-	// If the user is not authenticated, then give up because only users have roles.
-	$authenticated = yourls_is_valid_user();
-	if ( $authenticated !== true )
-		return false;
-
-	// Enumerate the capabilities available to this user through roles
-	$user_caps = array();
-	
-	foreach ( $authmgr_role_capabilities as $rolename => $rolecaps ) {
-			if ( authmgr_user_has_role( YOURLS_USER, $rolename ) ) {
-					$user_caps = array_merge( $user_caps, $rolecaps );
-			}
-	}
-	$user_caps = array_unique( $user_caps );
-
-	// Is the desired capability in the enumerated list of capabilities?
-	return in_array( $capability, $user_caps );
-}
-
-/*
- * If the user is connecting from an IP address designated for admins,
- * then all capabilities are automatically granted.
- * 
- * By default, only 127.0.0.0/8 (localhost) is an admin range.
- */
-yourls_add_filter( AUTHMGR_ALLOW, 'authmgr_check_admin_ipranges', 15 );
-function authmgr_check_admin_ipranges( $original, $capability ) {
-	global $authmgr_admin_ipranges;
-
-        // Shortcut - trust approval given by earlier filters
-        if ( $original === true ) return true;
-
-        // ensure $authmgr_admin_ipranges is setup
-        authmgr_environment_check();
-
-	foreach ($authmgr_admin_ipranges as $range) {
-		if ( authmgr_cidr_match( $_SERVER['REMOTE_ADDR'], $range ) )
-			return true;
-	}
-
-	return $original; // effectively returns false
-}
-
-/*
- * What capabilities are available when making API requests without a username?
- */
-yourls_add_filter( AUTHMGR_ALLOW, 'authmgr_check_apiuser_capability', 15 );
-function authmgr_check_apiuser_capability( $original, $capability ) {
-	// Shortcut - trust approval given by earlier filters
-	if ( $original === true ) return true;
-
-	// In API mode and not using user/path authn? Let it go.
-	if ( yourls_is_API() && !isset($_REQUEST['username']) )
-		return true;
-
-	return $original;
-}
-
-/******************** ROLE TEST AND ENUMERATION ***********************/
-
-/*
- * Determine whether a specific user has a role.
- */
-function authmgr_user_has_role( $username, $rolename ) {
-	return yourls_apply_filter( AUTHMGR_HASROLE, false, $username, $rolename );
-}
-
-// ******************* FILTERS THAT GRANT ROLE MEMBERSHIP *********************
-// By filtering AUTHMGR_HASROLE, you can connect internal roles to something else.
-// Any filter handlers should execute as quickly as possible.
-
-/*
- * What role memberships are defined for the user in user/config.php?
- */
-yourls_add_filter( AUTHMGR_HASROLE, 'authmgr_user_has_role_in_config');
-function authmgr_user_has_role_in_config( $original, $username, $rolename ) {
-	global $authmgr_role_assignment;
-
-	// if no role assignments are created, grant everything
-	// so the site still works even if stuff is configured wrong
-	if ( empty( $authmgr_role_assignment ) )
-		return true;
-
-	// do this the case-insensitive way
-	// the entire array was made lowercase in environment check
-	$username = strtolower($username);
-	$rolename = strtolower($rolename);
-
-	// if the role doesn't exist, give up now.
-	if ( !in_array( $rolename, array_keys( $authmgr_role_assignment ) ) )
-		return false;
-
-	$users_in_role = $authmgr_role_assignment[$rolename];
-	return in_array( $username, $users_in_role );	
-}
-
-
-/********************* VALIDATE CONFIGURATION ************************/
-
-function authmgr_environment_check() {
-	global $authmgr_anon_capabilities;
-	global $authmgr_role_capabilities;
-	global $authmgr_role_assignment;
-
-	if ( !isset( $authmgr_anon_capabilities) ) {
-		$authmgr_anon_capabilities = array();
-	}
-
-	if ( !isset( $authmgr_role_capabilities) ) {
-		$authmgr_role_capabilities = array(
-			AuthmgrRoles::Administrator => array(
-				AuthmgrCapability::ShowAdmin,
-				AuthmgrCapability::AddURL,
-				AuthmgrCapability::DeleteURL,
-				AuthmgrCapability::EditURL,
-				AuthmgrCapability::ManagePlugins,
-				AuthmgrCapability::API,
-                                AuthmgrCapability::ViewStats,
-			),
-			AuthmgrRoles::Editor => array(
-				AuthmgrCapability::ShowAdmin,
-				AuthmgrCapability::AddURL,
-				AuthmgrCapability::EditURL,
-				AuthmgrCapability::DeleteURL,
-                                AuthmgrCapability::ViewStats,
-			),
-			AuthmgrRoles::Contributor => array(
-				AuthmgrCapability::ShowAdmin,
-				AuthmgrCapability::AddURL,
-				AuthmgrCapability::ViewStats,
-			),
-		);
-	}
-
-	if ( !isset( $authmgr_role_assignment ) ) {
-		$authmgr_role_assignment = array();
-	}
-
-	if ( !isset( $authmgr_iprange_roles ) ) {
-		$authmgr_admin_ipranges = array(
-			'127.0.0.0/8',
-		);
-	}
-
-	// convert role assignment table to lower case if it hasn't been done already
-	// this makes searches much easier!
-	$authmgr_role_assignment_lower = array();
-	foreach ( $authmgr_role_assignment as $key => $value ) {
-		$t_key = strtolower( $key );
-		$t_value = array_map('strtolower', $value);
-		$authmgr_role_assignment_lower[$t_key] = $t_value;
-	}
-	$authmgr_role_assignment = $authmgr_role_assignment_lower;
-	unset($authmgr_role_assignment_lower);
-
-	return true;
-}
-
-// ***************** GENERAL UTILITY FUNCTIONS ********************
-
-/*
- * Borrowed from:
- * http://stackoverflow.com/questions/594112/matching-an-ip-to-a-cidr-mask-in-php5
- */
-function authmgr_cidr_match($ip, $range)
-{
-    list ($subnet, $bits) = split('/', $range);
-    $ip = ip2long($ip);
-    $subnet = ip2long($subnet);
-    $mask = -1 << (32 - $bits);
-    $subnet &= $mask; # nb: in case the supplied subnet wasn't correctly aligned
-    return ($ip & $mask) == $subnet;
-}