First Release

admin/admin.php

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+<?php
+
+class Password_Protected_Admin {
+
+	/**
+	 * Constructor
+	 */
+	function Password_Protected_Admin() {
+		add_action( 'admin_init', array( $this, 'privacy_settings' ) );
+		add_action( 'admin_notices', array( $this, 'password_protected_admin_notices' ) );
+	}
+
+	/**
+	 * Settings API
+	 */
+	function privacy_settings() {
+		add_settings_section(
+			'password_protected',
+			'Password Protected Settings',
+			array( $this, 'password_protected_settings_section' ),
+			'privacy'
+		);
+		add_settings_field(
+			'password_protected_status',
+			'Password Protection Status',
+			array( $this, 'password_protected_status_field' ),
+			'privacy',
+			'password_protected'
+		);
+		add_settings_field(
+			'password_protected_password',
+			'New Password',
+			array( $this, 'password_protected_password_field' ),
+			'privacy',
+			'password_protected'
+		);
+ 		register_setting( 'privacy', 'password_protected_status', 'intval' );
+ 		register_setting( 'privacy', 'password_protected_password', array( $this, 'sanitize_password_protected_password' ) );
+	}
+
+	/**
+	 * Sanitize Password Field Input
+	 */
+	function sanitize_password_protected_password( $val ) {
+		$old_val = get_option( 'password_protected_password' );
+		if ( empty( $val['new'] ) ) {
+			return $old_val;
+		} elseif ( empty( $val['confirm'] ) ) {
+			add_settings_error( 'password_protected_password', 'password_protected_password', __( 'New password not saved. When setting a new password please enter it in both fields.', 'password_protected' ) );
+			return $old_val;
+		} elseif ( $val['new'] != $val['confirm'] ) {
+			add_settings_error( 'password_protected_password', 'password_protected_password', __( 'New password not saved. Password fields did not match.', 'password_protected' ) );
+			return $old_val;
+		} elseif ( $val['new'] == $val['confirm'] ) {
+			add_settings_error( 'password_protected_password', 'password_protected_password', __( 'New password saved.', 'password_protected' ), 'updated' );
+			return $val['new'];
+		}
+		return get_option( 'password_protected_password' );
+	}
+
+	/**
+	 * Password Protected Section
+	 */
+	function password_protected_settings_section() {
+		echo '<p>' . __( 'Password protect your web site. Users will be asked to enter a password to view the site.', 'password_protected' ) . '</p>';
+	}
+
+	/**
+	 * Password Protection Status Field
+	 */
+	function password_protected_status_field() {
+		echo '<input name="password_protected_status" id="password_protected_status" type="checkbox" value="1" ' . checked( 1, get_option( 'password_protected_status' ), false ) . ' /> ' . __( 'Enabled', 'password_protected' );
+	}
+
+	/**
+	 * Password Field
+	 */
+	function password_protected_password_field() {
+		echo '<input type="password" name="password_protected_password[new]" id="password_protected_password_new" size="16" value="" autocomplete="off"> <span class="description">' . __( 'If you would like to change the password type a new one. Otherwise leave this blank.', 'password_protected' ) . '</span><br>
+			<input type="password" name="password_protected_password[confirm]" id="password_protected_password_confirm" size="16" value="" autocomplete="off"> <span class="description">' . __( 'Type your new password again.', 'password_protected' ) . '</span>';
+	}
+
+	/**
+	 * Password Admin Notice
+	 * Warns the user if they have enabled password protection but not entered a password
+	 */
+	function password_protected_admin_notices(){
+		global $current_screen;
+		if ( $current_screen->id == 'options-privacy' ) {
+			$status = get_option( 'password_protected_status' );
+			$pwd = get_option( 'password_protected_password' );
+			if ( (bool) $status && empty( $pwd ) ) {
+				echo '<div class="error"><p>' . __( 'You have enabled password protection but not yet set a password. Please set one below.', 'password_protected' ) . '</p></div>';
+			}
+		}
+	}
+
+}
+
+?>

password-protected.php

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+<?php
+
+/*
+Plugin Name: Password Protected
+Plugin URI: http://www.benhuson.co.uk/
+A very simple way to quickly password protect your WordPress site with a single password. Integrates seamlessly into your WordPress privacy settings.
+Version: 1.0
+Author: Ben Huson
+Author URI: http://www.benhuson.co.uk/
+License: GPLv2
+*/
+
+/*
+Copyright 2012 Ben Huson (email : [email protected])
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License, version 2, as 
+published by the Free Software Foundation.
+
+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, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+// Start session if not already started...
+if ( session_id() == '' )
+	session_start();
+
+// Setup Password Protected
+global $Password_Protected;
+$Password_Protected = new Password_Protected();
+
+class Password_Protected {
+
+	var $admin = null;
+	var $errors = null;
+
+	/**
+	 * Constructor
+	 */
+	function Password_Protected() {
+		$this->errors = new WP_Error();
+		add_action( 'init', array( $this, 'maybe_process_login' ), 1 );
+		add_action( 'template_redirect', array( $this, 'maybe_show_login' ), 1 );
+		$this->disable_feeds();
+		if ( is_admin() ) {
+			include_once( dirname( __FILE__ ) . '/admin/admin.php' );
+			$this->admin = new Password_Protected_Admin();
+		}
+	}
+
+	/**
+	 * Is Active?
+	 */
+	function is_active() {
+		if ( (bool) get_option( 'password_protected_status' ) )
+			return true;
+		return false;
+	}
+
+	/**
+	 * Disable Feeds
+	 */
+	function disable_feeds() {
+		add_action( 'do_feed', array( $this, 'disable_feed' ), 1 );
+		add_action( 'do_feed_rdf', array( $this, 'disable_feed' ), 1 );
+		add_action( 'do_feed_rss', array( $this, 'disable_feed' ), 1 );
+		add_action( 'do_feed_rss2', array( $this, 'disable_feed' ), 1 );
+		add_action( 'do_feed_atom', array( $this, 'disable_feed' ), 1 );
+	}
+
+	/**
+	 * Disable Feed
+	 * @todo Make Translatable
+	 */
+	function disable_feed() {
+		wp_die( __( 'Feeds are not available for this site. Please visit the <a href="'. get_bloginfo( 'url' ) .'">website</a>.' ) );
+	}
+
+	/**
+	 * Maybe Process Login
+	 */
+	function maybe_process_login() {
+		if ( $this->is_active() && isset( $_REQUEST['password_protected_pwd'] ) ) {
+			$password_protected_pwd = $_REQUEST['password_protected_pwd'];
+			$pwd = get_option( 'password_protected_password' );
+			// If correct password...
+			if ( $password_protected_pwd == $pwd && $pwd != '' ) {
+				$_SESSION[$this->get_site_id() . '_password_protected_auth'] = 1;
+			} else {
+				// ... otherwise incorrect password
+				$this->errors->add( 'incorrect_password', 'Incorrect Password' );
+			}
+		}
+
+		// Log out
+		if ( isset( $_REQUEST['action'] ) && $_REQUEST['action'] == 'logout' ) {
+			$_SESSION[$this->get_site_id() . '_password_protected_auth'] = 0;
+			$this->errors = new WP_Error();
+			$this->errors->add( 'logged_out', __( 'You are now logged out.' ), 'message' );
+		}
+	}
+
+	/**
+	 * Maybe Show Login
+	 */
+	function maybe_show_login() {
+		// Don't show login if not enabled
+		if ( ! $this->is_active() )
+			return;
+
+		// Logged in
+		if ( isset( $_SESSION[$this->get_site_id() . '_password_protected_auth'] ) && $_SESSION[$this->get_site_id() . '_password_protected_auth'] == 1 )
+			return;
+
+		// Show login form
+		include( dirname( __FILE__ ) . '/theme/login.php' );
+		exit();
+	}
+
+	/**
+	 * Get Site ID
+	 */
+	function get_site_id() {
+		global $blog_id;
+		return apply_filters( 'password_protected_blog_id', $blog_id );
+	}
+
+}
+
+?>

readme.txt

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+=== Password Protected ===
+Contributors: husobj
+Donate link: http://www.benhuson.co.uk/donate/
+Tags: password, protect, password protect, login
+Requires at least: 3.0
+Tested up to: 3.3.1
+Stable tag: 1.0
+
+A very simple way to quickly password protect your WordPress site with a single password. Integrates seamlessly into your WordPress privacy settings.
+
+== Description ==
+
+A very simple way to quickly password protect your WordPress site with a single password. Integrates seamlessly into your WordPress privacy settings.
+
+Features include:
+
+* Password protect your WordPress site with a single password.
+* Integrates seamlessly into your WordPress privacy settings.
+* Works with Mark Jaquith's [Login Logo](http://wordpress.org/extend/plugins/login-logo/) plugin.
+
+== Installation ==
+
+To install and configure this plugin...
+
+1. Upload or install the plugin through your WordPress admin.
+2. Activate the plugin via the 'Plugins' admin menu.
+3. Configuration the password in your WordPress Privacy settings.
+
+== Screenshots ==
+
+1. Login page perfectly mimicks the WordPress login.
+2. Integrates seamlessly into your WordPress privacy settings.
+
+== Changelog ==
+
+= 1.0 =
+
+* First Release