1 <?php

     2 /**

     3  * WordPress user administration API.

     4  *

     5  * @package WordPress

     6  * @subpackage Administration

     7  */

     8 

     9 /**

    10  * Creates a new user from the "Users" form using $_POST information.

    11  *

    12  * @since 2.0

    13  *

    14  * @return null|WP_Error|int Null when adding user, WP_Error or User ID integer when no parameters.

    15  */

    16 function add_user() {

    17 	return edit_user();

    18 }

    19 

    20 /**

    21  * Edit user settings based on contents of $_POST

    22  *

    23  * Used on user-edit.php and profile.php to manage and process user options, passwords etc.

    24  *

    25  * @since 2.0

    26  *

    27  * @param int $user_id Optional. User ID.

    28  * @return int user id of the updated user

    29  */

    30 function edit_user( $user_id = 0 ) {

    31 	global $wp_roles, $wpdb;

    32 	$user = new stdClass;

    33 	if ( $user_id ) {

    34 		$update = true;

    35 		$user->ID = (int) $user_id;

    36 		$userdata = get_userdata( $user_id );

    37 		$user->user_login = wp_slash( $userdata->user_login );

    38 	} else {

    39 		$update = false;

    40 	}

    41 

    42 	if ( !$update && isset( $_POST['user_login'] ) )

    43 		$user->user_login = sanitize_user($_POST['user_login'], true);

    44 

    45 	$pass1 = $pass2 = '';

    46 	if ( isset( $_POST['pass1'] ) )

    47 		$pass1 = $_POST['pass1'];

    48 	if ( isset( $_POST['pass2'] ) )

    49 		$pass2 = $_POST['pass2'];

    50 

    51 	if ( isset( $_POST['role'] ) && current_user_can( 'edit_users' ) ) {

    52 		$new_role = sanitize_text_field( $_POST['role'] );

    53 		$potential_role = isset($wp_roles->role_objects[$new_role]) ? $wp_roles->role_objects[$new_role] : false;

    54 		// Don't let anyone with 'edit_users' (admins) edit their own role to something without it.

    55 		// Multisite super admins can freely edit their blog roles -- they possess all caps.

    56 		if ( ( is_multisite() && current_user_can( 'manage_sites' ) ) || $user_id != get_current_user_id() || ($potential_role && $potential_role->has_cap( 'edit_users' ) ) )

    57 			$user->role = $new_role;

    58 

    59 		// If the new role isn't editable by the logged-in user die with error

    60 		$editable_roles = get_editable_roles();

    61 		if ( ! empty( $new_role ) && empty( $editable_roles[$new_role] ) )

    62 			wp_die(__('You can’t give users that role.'));

    63 	}

    64 

    65 	if ( isset( $_POST['email'] ))

    66 		$user->user_email = sanitize_text_field( $_POST['email'] );

    67 	if ( isset( $_POST['url'] ) ) {

    68 		if ( empty ( $_POST['url'] ) || $_POST['url'] == 'http://' ) {

    69 			$user->user_url = '';

    70 		} else {

    71 			$user->user_url = esc_url_raw( $_POST['url'] );

    72 			$protocols = implode( '|', array_map( 'preg_quote', wp_allowed_protocols() ) );

    73 			$user->user_url = preg_match('/^(' . $protocols . '):/is', $user->user_url) ? $user->user_url : 'http://'.$user->user_url;

    74 		}

    75 	}

    76 	if ( isset( $_POST['first_name'] ) )

    77 		$user->first_name = sanitize_text_field( $_POST['first_name'] );

    78 	if ( isset( $_POST['last_name'] ) )

    79 		$user->last_name = sanitize_text_field( $_POST['last_name'] );

    80 	if ( isset( $_POST['nickname'] ) )

    81 		$user->nickname = sanitize_text_field( $_POST['nickname'] );

    82 	if ( isset( $_POST['display_name'] ) )

    83 		$user->display_name = sanitize_text_field( $_POST['display_name'] );

    84 

    85 	if ( isset( $_POST['description'] ) )

    86 		$user->description = trim( $_POST['description'] );

    87 

    88 	foreach ( wp_get_user_contact_methods( $user ) as $method => $name ) {

    89 		if ( isset( $_POST[$method] ))

    90 			$user->$method = sanitize_text_field( $_POST[$method] );

    91 	}

    92 

    93 	if ( $update ) {

    94 		$user->rich_editing = isset( $_POST['rich_editing'] ) && 'false' == $_POST['rich_editing'] ? 'false' : 'true';

    95 		$user->admin_color = isset( $_POST['admin_color'] ) ? sanitize_text_field( $_POST['admin_color'] ) : 'fresh';

    96 		$user->show_admin_bar_front = isset( $_POST['admin_bar_front'] ) ? 'true' : 'false';

    97 	}

    98 

    99 	$user->comment_shortcuts = isset( $_POST['comment_shortcuts'] ) && 'true' == $_POST['comment_shortcuts'] ? 'true' : '';

   100 

   101 	$user->use_ssl = 0;

   102 	if ( !empty($_POST['use_ssl']) )

   103 		$user->use_ssl = 1;

   104 

   105 	$errors = new WP_Error();

   106 

   107 	/* checking that username has been typed */

   108 	if ( $user->user_login == '' )

   109 		$errors->add( 'user_login', __( '<strong>ERROR</strong>: Please enter a username.' ) );

   110 

   111 	/* checking the password has been typed twice */

   112 	do_action_ref_array( 'check_passwords', array( $user->user_login, &$pass1, &$pass2 ) );

   113 

   114 	if ( $update ) {

   115 		if ( empty($pass1) && !empty($pass2) )

   116 			$errors->add( 'pass', __( '<strong>ERROR</strong>: You entered your new password only once.' ), array( 'form-field' => 'pass1' ) );

   117 		elseif ( !empty($pass1) && empty($pass2) )

   118 			$errors->add( 'pass', __( '<strong>ERROR</strong>: You entered your new password only once.' ), array( 'form-field' => 'pass2' ) );

   119 	} else {

   120 		if ( empty($pass1) )

   121 			$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password.' ), array( 'form-field' => 'pass1' ) );

   122 		elseif ( empty($pass2) )

   123 			$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password twice.' ), array( 'form-field' => 'pass2' ) );

   124 	}

   125 

   126 	/* Check for "\" in password */

   127 	if ( false !== strpos( wp_unslash( $pass1 ), "\\" ) )

   128 		$errors->add( 'pass', __( '<strong>ERROR</strong>: Passwords may not contain the character "\\".' ), array( 'form-field' => 'pass1' ) );

   129 

   130 	/* checking the password has been typed twice the same */

   131 	if ( $pass1 != $pass2 )

   132 		$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter the same password in the two password fields.' ), array( 'form-field' => 'pass1' ) );

   133 

   134 	if ( !empty( $pass1 ) )

   135 		$user->user_pass = $pass1;

   136 

   137 	if ( !$update && isset( $_POST['user_login'] ) && !validate_username( $_POST['user_login'] ) )

   138 		$errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is invalid because it uses illegal characters. Please enter a valid username.' ));

   139 

   140 	if ( !$update && username_exists( $user->user_login ) )

   141 		$errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is already registered. Please choose another one.' ));

   142 

   143 	/* checking e-mail address */

   144 	if ( empty( $user->user_email ) ) {

   145 		$errors->add( 'empty_email', __( '<strong>ERROR</strong>: Please enter an e-mail address.' ), array( 'form-field' => 'email' ) );

   146 	} elseif ( !is_email( $user->user_email ) ) {

   147 		$errors->add( 'invalid_email', __( '<strong>ERROR</strong>: The email address isn&#8217;t correct.' ), array( 'form-field' => 'email' ) );

   148 	} elseif ( ( $owner_id = email_exists($user->user_email) ) && ( !$update || ( $owner_id != $user->ID ) ) ) {

   149 		$errors->add( 'email_exists', __('<strong>ERROR</strong>: This email is already registered, please choose another one.'), array( 'form-field' => 'email' ) );

   150 	}

   151 

   152 	// Allow plugins to return their own errors.

   153 	do_action_ref_array( 'user_profile_update_errors', array( &$errors, $update, &$user ) );

   154 

   155 	if ( $errors->get_error_codes() )

   156 		return $errors;

   157 

   158 	if ( $update ) {

   159 		$user_id = wp_update_user( $user );

   160 	} else {

   161 		$user_id = wp_insert_user( $user );

   162 		wp_new_user_notification( $user_id, isset( $_POST['send_password'] ) ? wp_unslash( $pass1 ) : '' );

   163 	}

   164 	return $user_id;

   165 }

   166 

   167 /**

   168  * Fetch a filtered list of user roles that the current user is

   169  * allowed to edit.

   170  *

   171  * Simple function who's main purpose is to allow filtering of the

   172  * list of roles in the $wp_roles object so that plugins can remove

   173  * inappropriate ones depending on the situation or user making edits.

   174  * Specifically because without filtering anyone with the edit_users

   175  * capability can edit others to be administrators, even if they are

   176  * only editors or authors. This filter allows admins to delegate

   177  * user management.

   178  *

   179  * @since 2.8

   180  *

   181  * @return unknown

   182  */

   183 function get_editable_roles() {

   184 	global $wp_roles;

   185 

   186 	$all_roles = $wp_roles->roles;

   187 	$editable_roles = apply_filters('editable_roles', $all_roles);

   188 

   189 	return $editable_roles;

   190 }

   191 

   192 /**

   193  * Retrieve user data and filter it.

   194  *

   195  * @since 2.0.5

   196  *

   197  * @param int $user_id User ID.

   198  * @return WP_User|bool WP_User object on success, false on failure.

   199  */

   200 function get_user_to_edit( $user_id ) {

   201 	$user = get_userdata( $user_id );

   202 

   203 	if ( $user )

   204 		$user->filter = 'edit';

   205 

   206 	return $user;

   207 }

   208 

   209 /**

   210  * Retrieve the user's drafts.

   211  *

   212  * @since 2.0.0

   213  *

   214  * @param int $user_id User ID.

   215  * @return array

   216  */

   217 function get_users_drafts( $user_id ) {

   218 	global $wpdb;

   219 	$query = $wpdb->prepare("SELECT ID, post_title FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'draft' AND post_author = %d ORDER BY post_modified DESC", $user_id);

   220 	$query = apply_filters('get_users_drafts', $query);

   221 	return $wpdb->get_results( $query );

   222 }

   223 

   224 /**

   225  * Remove user and optionally reassign posts and links to another user.

   226  *

   227  * If the $reassign parameter is not assigned to an User ID, then all posts will

   228  * be deleted of that user. The action 'delete_user' that is passed the User ID

   229  * being deleted will be run after the posts are either reassigned or deleted.

   230  * The user meta will also be deleted that are for that User ID.

   231  *

   232  * @since 2.0.0

   233  *

   234  * @param int $id User ID.

   235  * @param int $reassign Optional. Reassign posts and links to new User ID.

   236  * @return bool True when finished.

   237  */

   238 function wp_delete_user( $id, $reassign = 'novalue' ) {

   239 	global $wpdb;

   240 

   241 	$id = (int) $id;

   242 	$user = new WP_User( $id );

   243 

   244 	if ( !$user->exists() )

   245 		return false;

   246 

   247 	// allow for transaction statement

   248 	do_action('delete_user', $id);

   249 

   250 	if ( 'novalue' === $reassign || null === $reassign ) {

   251 		$post_types_to_delete = array();

   252 		foreach ( get_post_types( array(), 'objects' ) as $post_type ) {

   253 			if ( $post_type->delete_with_user ) {

   254 				$post_types_to_delete[] = $post_type->name;

   255 			} elseif ( null === $post_type->delete_with_user && post_type_supports( $post_type->name, 'author' ) ) {

   256 				$post_types_to_delete[] = $post_type->name;

   257 			}

   258 		}

   259 

   260 		$post_types_to_delete = apply_filters( 'post_types_to_delete_with_user', $post_types_to_delete, $id );

   261 		$post_types_to_delete = implode( "', '", $post_types_to_delete );

   262 		$post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d AND post_type IN ('$post_types_to_delete')", $id ) );

   263 		if ( $post_ids ) {

   264 			foreach ( $post_ids as $post_id )

   265 				wp_delete_post( $post_id );

   266 		}

   267 

   268 		// Clean links

   269 		$link_ids = $wpdb->get_col( $wpdb->prepare("SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $id) );

   270 

   271 		if ( $link_ids ) {

   272 			foreach ( $link_ids as $link_id )

   273 				wp_delete_link($link_id);

   274 		}

   275 	} else {

   276 		$reassign = (int) $reassign;

   277 		$post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $id ) );

   278 		$wpdb->update( $wpdb->posts, array('post_author' => $reassign), array('post_author' => $id) );

   279 		if ( ! empty( $post_ids ) ) {

   280 			foreach ( $post_ids as $post_id )

   281 				clean_post_cache( $post_id );

   282 		}

   283 		$link_ids = $wpdb->get_col( $wpdb->prepare("SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $id) );

   284 		$wpdb->update( $wpdb->links, array('link_owner' => $reassign), array('link_owner' => $id) );

   285 		if ( ! empty( $link_ids ) ) {

   286 			foreach ( $link_ids as $link_id )

   287 				clean_bookmark_cache( $link_id );

   288 		}

   289 	}

   290 

   291 	// FINALLY, delete user

   292 	if ( is_multisite() ) {

   293 		remove_user_from_blog( $id, get_current_blog_id() );

   294 	} else {

   295 		$meta = $wpdb->get_col( $wpdb->prepare( "SELECT umeta_id FROM $wpdb->usermeta WHERE user_id = %d", $id ) );

   296 		foreach ( $meta as $mid )

   297 			delete_metadata_by_mid( 'user', $mid );

   298 

   299 		$wpdb->delete( $wpdb->users, array( 'ID' => $id ) );

   300 	}

   301 

   302 	clean_user_cache( $user );

   303 

   304 	// allow for commit transaction

   305 	do_action('deleted_user', $id);

   306 

   307 	return true;

   308 }

   309 

   310 /**

   311  * Remove all capabilities from user.

   312  *

   313  * @since 2.1.0

   314  *

   315  * @param int $id User ID.

   316  */

   317 function wp_revoke_user($id) {

   318 	$id = (int) $id;

   319 

   320 	$user = new WP_User($id);

   321 	$user->remove_all_caps();

   322 }

   323 

   324 add_action('admin_init', 'default_password_nag_handler');

   325 /**

   326  * @since 2.8.0

   327  */

   328 function default_password_nag_handler($errors = false) {

   329 	global $user_ID;

   330 	if ( ! get_user_option('default_password_nag') ) //Short circuit it.

   331 		return;

   332 

   333 	//get_user_setting = JS saved UI setting. else no-js-fallback code.

   334 	if ( 'hide' == get_user_setting('default_password_nag') || isset($_GET['default_password_nag']) && '0' == $_GET['default_password_nag'] ) {

   335 		delete_user_setting('default_password_nag');

   336 		update_user_option($user_ID, 'default_password_nag', false, true);

   337 	}

   338 }

   339 

   340 add_action('profile_update', 'default_password_nag_edit_user', 10, 2);

   341 /**

   342  * @since 2.8.0

   343  */

   344 function default_password_nag_edit_user($user_ID, $old_data) {

   345 	if ( ! get_user_option('default_password_nag', $user_ID) ) //Short circuit it.

   346 		return;

   347 

   348 	$new_data = get_userdata($user_ID);

   349 

   350 	if ( $new_data->user_pass != $old_data->user_pass ) { //Remove the nag if the password has been changed.

   351 		delete_user_setting('default_password_nag');

   352 		update_user_option($user_ID, 'default_password_nag', false, true);

   353 	}

   354 }

   355 

   356 add_action('admin_notices', 'default_password_nag');

   357 /**

   358  * @since 2.8.0

   359  */

   360 function default_password_nag() {

   361 	global $pagenow;

   362 	if ( 'profile.php' == $pagenow || ! get_user_option('default_password_nag') ) //Short circuit it.

   363 		return;

   364 

   365 	echo '<div class="error default-password-nag">';

   366 	echo '<p>';

   367 	echo '<strong>' . __('Notice:') . '</strong> ';

   368 	_e('You’re using the auto-generated password for your account. Would you like to change it to something easier to remember?');

   369 	echo '</p><p>';

   370 	printf( '<a href="%s">' . __('Yes, take me to my profile page') . '</a> | ', get_edit_profile_url( get_current_user_id() ) . '#password' );

   371 	printf( '<a href="%s" id="default-password-nag-no">' . __('No thanks, do not remind me again') . '</a>', '?default_password_nag=0' );

   372 	echo '</p></div>';

   373 }