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Current File : /proc/self/root/var/www/html/kalemon/public/blog/wp-admin/includes/ms.php
<?php
/**
 * Multisite administration functions.
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.0.0
 */

/**
 * Determine if uploaded file exceeds space quota.
 *
 * @since 3.0.0
 *
 * @param array $file $_FILES array for a given file.
 * @return array $_FILES array with 'error' key set if file exceeds quota. 'error' is empty otherwise.
 */
function check_upload_size( $file ) {
	if ( get_site_option( 'upload_space_check_disabled' ) )
		return $file;

	if ( $file['error'] != '0' ) // there's already an error
		return $file;

	if ( defined( 'WP_IMPORTING' ) )
		return $file;

	$space_left = get_upload_space_available();

	$file_size = filesize( $file['tmp_name'] );
	if ( $space_left < $file_size ) {
		/* translators: 1: Required disk space in kilobytes */
		$file['error'] = sprintf( __( 'Not enough space to upload. %1$s KB needed.' ), number_format( ( $file_size - $space_left ) / KB_IN_BYTES ) );
	}

	if ( $file_size > ( KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 ) ) ) {
		/* translators: 1: Maximum allowed file size in kilobytes */
		$file['error'] = sprintf( __( 'This file is too big. Files must be less than %1$s KB in size.' ), get_site_option( 'fileupload_maxk', 1500 ) );
	}

	if ( upload_is_user_over_quota( false ) ) {
		$file['error'] = __( 'You have used your space quota. Please delete files before uploading.' );
	}

	if ( $file['error'] != '0' && ! isset( $_POST['html-upload'] ) && ! wp_doing_ajax() ) {
		wp_die( $file['error'] . ' <a href="javascript:history.go(-1)">' . __( 'Back' ) . '</a>' );
	}

	return $file;
}

/**
 * Delete a site.
 *
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int  $blog_id Site ID.
 * @param bool $drop    True if site's database tables should be dropped. Default is false.
 */
function wpmu_delete_blog( $blog_id, $drop = false ) {
	global $wpdb;

	$switch = false;
	if ( get_current_blog_id() != $blog_id ) {
		$switch = true;
		switch_to_blog( $blog_id );
	}

	$blog = get_site( $blog_id );
	/**
	 * Fires before a site is deleted.
	 *
	 * @since MU
	 *
	 * @param int  $blog_id The site ID.
	 * @param bool $drop    True if site's table should be dropped. Default is false.
	 */
	do_action( 'delete_blog', $blog_id, $drop );

	$users = get_users( array( 'blog_id' => $blog_id, 'fields' => 'ids' ) );

	// Remove users from this blog.
	if ( ! empty( $users ) ) {
		foreach ( $users as $user_id ) {
			remove_user_from_blog( $user_id, $blog_id );
		}
	}

	update_blog_status( $blog_id, 'deleted', 1 );

	$current_network = get_network();

	// If a full blog object is not available, do not destroy anything.
	if ( $drop && ! $blog ) {
		$drop = false;
	}

	// Don't destroy the initial, main, or root blog.
	if ( $drop && ( 1 == $blog_id || is_main_site( $blog_id ) || ( $blog->path == $current_network->path && $blog->domain == $current_network->domain ) ) ) {
		$drop = false;
	}

	$upload_path = trim( get_option( 'upload_path' ) );

	// If ms_files_rewriting is enabled and upload_path is empty, wp_upload_dir is not reliable.
	if ( $drop && get_site_option( 'ms_files_rewriting' ) && empty( $upload_path ) ) {
		$drop = false;
	}

	if ( $drop ) {
		$uploads = wp_get_upload_dir();

		$tables = $wpdb->tables( 'blog' );
		/**
		 * Filters the tables to drop when the site is deleted.
		 *
		 * @since MU
		 *
		 * @param array $tables  The site tables to be dropped.
		 * @param int   $blog_id The ID of the site to drop tables for.
		 */
		$drop_tables = apply_filters( 'wpmu_drop_tables', $tables, $blog_id );

		foreach ( (array) $drop_tables as $table ) {
			$wpdb->query( "DROP TABLE IF EXISTS `$table`" );
		}

		$wpdb->delete( $wpdb->blogs, array( 'blog_id' => $blog_id ) );

		/**
		 * Filters the upload base directory to delete when the site is deleted.
		 *
		 * @since MU
		 *
		 * @param string $uploads['basedir'] Uploads path without subdirectory. @see wp_upload_dir()
		 * @param int    $blog_id            The site ID.
		 */
		$dir = apply_filters( 'wpmu_delete_blog_upload_dir', $uploads['basedir'], $blog_id );
		$dir = rtrim( $dir, DIRECTORY_SEPARATOR );
		$top_dir = $dir;
		$stack = array($dir);
		$index = 0;

		while ( $index < count( $stack ) ) {
			// Get indexed directory from stack
			$dir = $stack[$index];

			$dh = @opendir( $dir );
			if ( $dh ) {
				while ( ( $file = @readdir( $dh ) ) !== false ) {
					if ( $file == '.' || $file == '..' )
						continue;

					if ( @is_dir( $dir . DIRECTORY_SEPARATOR . $file ) ) {
						$stack[] = $dir . DIRECTORY_SEPARATOR . $file;
					} elseif ( @is_file( $dir . DIRECTORY_SEPARATOR . $file ) ) {
						@unlink( $dir . DIRECTORY_SEPARATOR . $file );
					}
				}
				@closedir( $dh );
			}
			$index++;
		}

		$stack = array_reverse( $stack ); // Last added dirs are deepest
		foreach ( (array) $stack as $dir ) {
			if ( $dir != $top_dir)
			@rmdir( $dir );
		}

		clean_blog_cache( $blog );
	}

	if ( $switch )
		restore_current_blog();
}

/**
 * Delete a user from the network and remove from all sites.
 *
 * @since 3.0.0
 *
 * @todo Merge with wp_delete_user() ?
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int $id The user ID.
 * @return bool True if the user was deleted, otherwise false.
 */
function wpmu_delete_user( $id ) {
	global $wpdb;

	if ( ! is_numeric( $id ) ) {
		return false;
	}

	$id = (int) $id;
	$user = new WP_User( $id );

	if ( !$user->exists() )
		return false;

	// Global super-administrators are protected, and cannot be deleted.
	$_super_admins = get_super_admins();
	if ( in_array( $user->user_login, $_super_admins, true ) ) {
		return false;
	}

	/**
	 * Fires before a user is deleted from the network.
	 *
	 * @since MU
	 *
	 * @param int $id ID of the user about to be deleted from the network.
	 */
	do_action( 'wpmu_delete_user', $id );

	$blogs = get_blogs_of_user( $id );

	if ( ! empty( $blogs ) ) {
		foreach ( $blogs as $blog ) {
			switch_to_blog( $blog->userblog_id );
			remove_user_from_blog( $id, $blog->userblog_id );

			$post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $id ) );
			foreach ( (array) $post_ids as $post_id ) {
				wp_delete_post( $post_id );
			}

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

			if ( $link_ids ) {
				foreach ( $link_ids as $link_id )
					wp_delete_link( $link_id );
			}

			restore_current_blog();
		}
	}

	$meta = $wpdb->get_col( $wpdb->prepare( "SELECT umeta_id FROM $wpdb->usermeta WHERE user_id = %d", $id ) );
	foreach ( $meta as $mid )
		delete_metadata_by_mid( 'user', $mid );

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

	clean_user_cache( $user );

	/** This action is documented in wp-admin/includes/user.php */
	do_action( 'deleted_user', $id );

	return true;
}

/**
 * Sends an email when a site administrator email address is changed.
 *
 * @since 3.0.0
 *
 * @param string $old_value The old email address. Not currently used.
 * @param string $value     The new email address.
 */
function update_option_new_admin_email( $old_value, $value ) {
	if ( $value == get_option( 'admin_email' ) || !is_email( $value ) )
		return;

	$hash = md5( $value. time() .mt_rand() );
	$new_admin_email = array(
		'hash' => $hash,
		'newemail' => $value
	);
	update_option( 'adminhash', $new_admin_email );

	$switched_locale = switch_to_locale( get_user_locale() );

	/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
	$email_text = __( 'Howdy ###USERNAME###,

You recently requested to have the administration email address on
your site changed.

If this is correct, please click on the following link to change it:
###ADMIN_URL###

You can safely ignore and delete this email if you do not want to
take this action.

This email has been sent to ###EMAIL###

Regards,
All at ###SITENAME###
###SITEURL###' );

	/**
	 * Filters the email text sent when the site admin email is changed.
	 *
	 * The following strings have a special meaning and will get replaced dynamically:
	 * ###USERNAME###  The current user's username.
	 * ###ADMIN_URL### The link to click on to confirm the email change.
	 * ###EMAIL###     The new email.
	 * ###SITENAME###  The name of the site.
	 * ###SITEURL###   The URL to the site.
	 *
	 * @since MU
	 *
	 * @param string $email_text      Text in the email.
	 * @param string $new_admin_email New admin email that the current administration email was changed to.
	 */
	$content = apply_filters( 'new_admin_email_content', $email_text, $new_admin_email );

	$current_user = wp_get_current_user();
	$content = str_replace( '###USERNAME###', $current_user->user_login, $content );
	$content = str_replace( '###ADMIN_URL###', esc_url( self_admin_url( 'options.php?adminhash='.$hash ) ), $content );
	$content = str_replace( '###EMAIL###', $value, $content );
	$content = str_replace( '###SITENAME###', get_site_option( 'site_name' ), $content );
	$content = str_replace( '###SITEURL###', network_home_url(), $content );

	wp_mail( $value, sprintf( __( '[%s] New Admin Email Address' ), wp_specialchars_decode( get_option( 'blogname' ) ) ), $content );

	if ( $switched_locale ) {
		restore_previous_locale();
	}
}

/**
 * Sends an email when an email address change is requested.
 *
 * @since 3.0.0
 *
 * @global WP_Error $errors WP_Error object.
 * @global wpdb     $wpdb   WordPress database object.
 */
function send_confirmation_on_profile_email() {
	global $errors, $wpdb;
	$current_user = wp_get_current_user();
	if ( ! is_object($errors) )
		$errors = new WP_Error();

	if ( $current_user->ID != $_POST['user_id'] )
		return false;

	if ( $current_user->user_email != $_POST['email'] ) {
		if ( !is_email( $_POST['email'] ) ) {
			$errors->add( 'user_email', __( "<strong>ERROR</strong>: The email address isn&#8217;t correct." ), array( 'form-field' => 'email' ) );
			return;
		}

		if ( $wpdb->get_var( $wpdb->prepare( "SELECT user_email FROM {$wpdb->users} WHERE user_email=%s", $_POST['email'] ) ) ) {
			$errors->add( 'user_email', __( "<strong>ERROR</strong>: The email address is already used." ), array( 'form-field' => 'email' ) );
			delete_user_meta( $current_user->ID, '_new_email' );
			return;
		}

		$hash = md5( $_POST['email'] . time() . mt_rand() );
		$new_user_email = array(
			'hash' => $hash,
			'newemail' => $_POST['email']
		);
		update_user_meta( $current_user->ID, '_new_email', $new_user_email );

		$switched_locale = switch_to_locale( get_user_locale() );

		/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
		$email_text = __( 'Howdy ###USERNAME###,

You recently requested to have the email address on your account changed.

If this is correct, please click on the following link to change it:
###ADMIN_URL###

You can safely ignore and delete this email if you do not want to
take this action.

This email has been sent to ###EMAIL###

Regards,
All at ###SITENAME###
###SITEURL###' );

		/**
		 * Filters the email text sent when a user changes emails.
		 *
		 * The following strings have a special meaning and will get replaced dynamically:
		 * ###USERNAME###  The current user's username.
		 * ###ADMIN_URL### The link to click on to confirm the email change.
		 * ###EMAIL###     The new email.
		 * ###SITENAME###  The name of the site.
		 * ###SITEURL###   The URL to the site.
		 *
		 * @since MU
		 *
		 * @param string $email_text     Text in the email.
		 * @param string $new_user_email New user email that the current user has changed to.
		 */
		$content = apply_filters( 'new_user_email_content', $email_text, $new_user_email );

		$content = str_replace( '###USERNAME###', $current_user->user_login, $content );
		$content = str_replace( '###ADMIN_URL###', esc_url( self_admin_url( 'profile.php?newuseremail=' . $hash ) ), $content );
		$content = str_replace( '###EMAIL###', $_POST['email'], $content);
		$content = str_replace( '###SITENAME###', get_site_option( 'site_name' ), $content );
		$content = str_replace( '###SITEURL###', network_home_url(), $content );

		wp_mail( $_POST['email'], sprintf( __( '[%s] New Email Address' ), wp_specialchars_decode( get_option( 'blogname' ) ) ), $content );
		$_POST['email'] = $current_user->user_email;

		if ( $switched_locale ) {
			restore_previous_locale();
		}
	}
}

/**
 * Adds an admin notice alerting the user to check for confirmation email
 * after email address change.
 *
 * @since 3.0.0
 *
 * @global string $pagenow
 */
function new_user_email_admin_notice() {
	global $pagenow;
	if ( 'profile.php' === $pagenow && isset( $_GET['updated'] ) && $email = get_user_meta( get_current_user_id(), '_new_email', true ) ) {
		/* translators: %s: New email address */
		echo '<div class="notice notice-info"><p>' . sprintf( __( 'Your email address has not been updated yet. Please check your inbox at %s for a confirmation email.' ), '<code>' . esc_html( $email['newemail'] ) . '</code>' ) . '</p></div>';
	}
}

/**
 * Check whether a site has used its allotted upload space.
 *
 * @since MU
 *
 * @param bool $echo Optional. If $echo is set and the quota is exceeded, a warning message is echoed. Default is true.
 * @return bool True if user is over upload space quota, otherwise false.
 */
function upload_is_user_over_quota( $echo = true ) {
	if ( get_site_option( 'upload_space_check_disabled' ) )
		return false;

	$space_allowed = get_space_allowed();
	if ( ! is_numeric( $space_allowed ) ) {
		$space_allowed = 10; // Default space allowed is 10 MB
	}
	$space_used = get_space_used();

	if ( ( $space_allowed - $space_used ) < 0 ) {
		if ( $echo )
			_e( 'Sorry, you have used your space allocation. Please delete some files to upload more files.' );
		return true;
	} else {
		return false;
	}
}

/**
 * Displays the amount of disk space used by the current site. Not used in core.
 *
 * @since MU
 */
function display_space_usage() {
	$space_allowed = get_space_allowed();
	$space_used = get_space_used();

	$percent_used = ( $space_used / $space_allowed ) * 100;

	if ( $space_allowed > 1000 ) {
		$space = number_format( $space_allowed / KB_IN_BYTES );
		/* translators: Gigabytes */
		$space .= __( 'GB' );
	} else {
		$space = number_format( $space_allowed );
		/* translators: Megabytes */
		$space .= __( 'MB' );
	}
	?>
	<strong><?php
		/* translators: Storage space that's been used. 1: Percentage of used space, 2: Total space allowed in megabytes or gigabytes */
		printf( __( 'Used: %1$s%% of %2$s' ), number_format( $percent_used ), $space );
	?></strong>
	<?php
}

/**
 * Get the remaining upload space for this site.
 *
 * @since MU
 *
 * @param int $size Current max size in bytes
 * @return int Max size in bytes
 */
function fix_import_form_size( $size ) {
	if ( upload_is_user_over_quota( false ) ) {
		return 0;
	}
	$available = get_upload_space_available();
	return min( $size, $available );
}

/**
 * Displays the site upload space quota setting form on the Edit Site Settings screen.
 *
 * @since 3.0.0
 *
 * @param int $id The ID of the site to display the setting for.
 */
function upload_space_setting( $id ) {
	switch_to_blog( $id );
	$quota = get_option( 'blog_upload_space' );
	restore_current_blog();

	if ( !$quota )
		$quota = '';

	?>
	<tr>
		<th><label for="blog-upload-space-number"><?php _e( 'Site Upload Space Quota' ); ?></label></th>
		<td>
			<input type="number" step="1" min="0" style="width: 100px" name="option[blog_upload_space]" id="blog-upload-space-number" aria-describedby="blog-upload-space-desc" value="<?php echo $quota; ?>" />
			<span id="blog-upload-space-desc"><span class="screen-reader-text"><?php _e( 'Size in megabytes' ); ?></span> <?php _e( 'MB (Leave blank for network default)' ); ?></span>
		</td>
	</tr>
	<?php
}

/**
 * Update the status of a user in the database.
 *
 * Used in core to mark a user as spam or "ham" (not spam) in Multisite.
 *
 * @since 3.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int    $id         The user ID.
 * @param string $pref       The column in the wp_users table to update the user's status
 *                           in (presumably user_status, spam, or deleted).
 * @param int    $value      The new status for the user.
 * @param null   $deprecated Deprecated as of 3.0.2 and should not be used.
 * @return int   The initially passed $value.
 */
function update_user_status( $id, $pref, $value, $deprecated = null ) {
	global $wpdb;

	if ( null !== $deprecated )
		_deprecated_argument( __FUNCTION__, '3.0.2' );

	$wpdb->update( $wpdb->users, array( sanitize_key( $pref ) => $value ), array( 'ID' => $id ) );

	$user = new WP_User( $id );
	clean_user_cache( $user );

	if ( $pref == 'spam' ) {
		if ( $value == 1 ) {
			/**
			 * Fires after the user is marked as a SPAM user.
			 *
			 * @since 3.0.0
			 *
			 * @param int $id ID of the user marked as SPAM.
			 */
			do_action( 'make_spam_user', $id );
		} else {
			/**
			 * Fires after the user is marked as a HAM user. Opposite of SPAM.
			 *
			 * @since 3.0.0
			 *
			 * @param int $id ID of the user marked as HAM.
			 */
			do_action( 'make_ham_user', $id );
		}
	}

	return $value;
}

/**
 * Cleans the user cache for a specific user.
 *
 * @since 3.0.0
 *
 * @param int $id The user ID.
 * @return bool|int The ID of the refreshed user or false if the user does not exist.
 */
function refresh_user_details( $id ) {
	$id = (int) $id;

	if ( !$user = get_userdata( $id ) )
		return false;

	clean_user_cache( $user );

	return $id;
}

/**
 * Returns the language for a language code.
 *
 * @since 3.0.0
 *
 * @param string $code Optional. The two-letter language code. Default empty.
 * @return string The language corresponding to $code if it exists. If it does not exist,
 *                then the first two letters of $code is returned.
 */
function format_code_lang( $code = '' ) {
	$code = strtolower( substr( $code, 0, 2 ) );
	$lang_codes = array(
		'aa' => 'Afar', 'ab' => 'Abkhazian', 'af' => 'Afrikaans', 'ak' => 'Akan', 'sq' => 'Albanian', 'am' => 'Amharic', 'ar' => 'Arabic', 'an' => 'Aragonese', 'hy' => 'Armenian', 'as' => 'Assamese', 'av' => 'Avaric', 'ae' => 'Avestan', 'ay' => 'Aymara', 'az' => 'Azerbaijani', 'ba' => 'Bashkir', 'bm' => 'Bambara', 'eu' => 'Basque', 'be' => 'Belarusian', 'bn' => 'Bengali',
		'bh' => 'Bihari', 'bi' => 'Bislama', 'bs' => 'Bosnian', 'br' => 'Breton', 'bg' => 'Bulgarian', 'my' => 'Burmese', 'ca' => 'Catalan; Valencian', 'ch' => 'Chamorro', 'ce' => 'Chechen', 'zh' => 'Chinese', 'cu' => 'Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic', 'cv' => 'Chuvash', 'kw' => 'Cornish', 'co' => 'Corsican', 'cr' => 'Cree',
		'cs' => 'Czech', 'da' => 'Danish', 'dv' => 'Divehi; Dhivehi; Maldivian', 'nl' => 'Dutch; Flemish', 'dz' => 'Dzongkha', 'en' => 'English', 'eo' => 'Esperanto', 'et' => 'Estonian', 'ee' => 'Ewe', 'fo' => 'Faroese', 'fj' => 'Fijjian', 'fi' => 'Finnish', 'fr' => 'French', 'fy' => 'Western Frisian', 'ff' => 'Fulah', 'ka' => 'Georgian', 'de' => 'German', 'gd' => 'Gaelic; Scottish Gaelic',
		'ga' => 'Irish', 'gl' => 'Galician', 'gv' => 'Manx', 'el' => 'Greek, Modern', 'gn' => 'Guarani', 'gu' => 'Gujarati', 'ht' => 'Haitian; Haitian Creole', 'ha' => 'Hausa', 'he' => 'Hebrew', 'hz' => 'Herero', 'hi' => 'Hindi', 'ho' => 'Hiri Motu', 'hu' => 'Hungarian', 'ig' => 'Igbo', 'is' => 'Icelandic', 'io' => 'Ido', 'ii' => 'Sichuan Yi', 'iu' => 'Inuktitut', 'ie' => 'Interlingue',
		'ia' => 'Interlingua (International Auxiliary Language Association)', 'id' => 'Indonesian', 'ik' => 'Inupiaq', 'it' => 'Italian', 'jv' => 'Javanese', 'ja' => 'Japanese', 'kl' => 'Kalaallisut; Greenlandic', 'kn' => 'Kannada', 'ks' => 'Kashmiri', 'kr' => 'Kanuri', 'kk' => 'Kazakh', 'km' => 'Central Khmer', 'ki' => 'Kikuyu; Gikuyu', 'rw' => 'Kinyarwanda', 'ky' => 'Kirghiz; Kyrgyz',
		'kv' => 'Komi', 'kg' => 'Kongo', 'ko' => 'Korean', 'kj' => 'Kuanyama; Kwanyama', 'ku' => 'Kurdish', 'lo' => 'Lao', 'la' => 'Latin', 'lv' => 'Latvian', 'li' => 'Limburgan; Limburger; Limburgish', 'ln' => 'Lingala', 'lt' => 'Lithuanian', 'lb' => 'Luxembourgish; Letzeburgesch', 'lu' => 'Luba-Katanga', 'lg' => 'Ganda', 'mk' => 'Macedonian', 'mh' => 'Marshallese', 'ml' => 'Malayalam',
		'mi' => 'Maori', 'mr' => 'Marathi', 'ms' => 'Malay', 'mg' => 'Malagasy', 'mt' => 'Maltese', 'mo' => 'Moldavian', 'mn' => 'Mongolian', 'na' => 'Nauru', 'nv' => 'Navajo; Navaho', 'nr' => 'Ndebele, South; South Ndebele', 'nd' => 'Ndebele, North; North Ndebele', 'ng' => 'Ndonga', 'ne' => 'Nepali', 'nn' => 'Norwegian Nynorsk; Nynorsk, Norwegian', 'nb' => 'Bokmål, Norwegian, Norwegian Bokmål',
		'no' => 'Norwegian', 'ny' => 'Chichewa; Chewa; Nyanja', 'oc' => 'Occitan, Provençal', 'oj' => 'Ojibwa', 'or' => 'Oriya', 'om' => 'Oromo', 'os' => 'Ossetian; Ossetic', 'pa' => 'Panjabi; Punjabi', 'fa' => 'Persian', 'pi' => 'Pali', 'pl' => 'Polish', 'pt' => 'Portuguese', 'ps' => 'Pushto', 'qu' => 'Quechua', 'rm' => 'Romansh', 'ro' => 'Romanian', 'rn' => 'Rundi', 'ru' => 'Russian',
		'sg' => 'Sango', 'sa' => 'Sanskrit', 'sr' => 'Serbian', 'hr' => 'Croatian', 'si' => 'Sinhala; Sinhalese', 'sk' => 'Slovak', 'sl' => 'Slovenian', 'se' => 'Northern Sami', 'sm' => 'Samoan', 'sn' => 'Shona', 'sd' => 'Sindhi', 'so' => 'Somali', 'st' => 'Sotho, Southern', 'es' => 'Spanish; Castilian', 'sc' => 'Sardinian', 'ss' => 'Swati', 'su' => 'Sundanese', 'sw' => 'Swahili',
		'sv' => 'Swedish', 'ty' => 'Tahitian', 'ta' => 'Tamil', 'tt' => 'Tatar', 'te' => 'Telugu', 'tg' => 'Tajik', 'tl' => 'Tagalog', 'th' => 'Thai', 'bo' => 'Tibetan', 'ti' => 'Tigrinya', 'to' => 'Tonga (Tonga Islands)', 'tn' => 'Tswana', 'ts' => 'Tsonga', 'tk' => 'Turkmen', 'tr' => 'Turkish', 'tw' => 'Twi', 'ug' => 'Uighur; Uyghur', 'uk' => 'Ukrainian', 'ur' => 'Urdu', 'uz' => 'Uzbek',
		've' => 'Venda', 'vi' => 'Vietnamese', 'vo' => 'Volapük', 'cy' => 'Welsh','wa' => 'Walloon','wo' => 'Wolof', 'xh' => 'Xhosa', 'yi' => 'Yiddish', 'yo' => 'Yoruba', 'za' => 'Zhuang; Chuang', 'zu' => 'Zulu' );

	/**
	 * Filters the language codes.
	 *
	 * @since MU
	 *
	 * @param array  $lang_codes Key/value pair of language codes where key is the short version.
	 * @param string $code       A two-letter designation of the language.
	 */
	$lang_codes = apply_filters( 'lang_codes', $lang_codes, $code );
	return strtr( $code, $lang_codes );
}

/**
 * Synchronize category and post tag slugs when global terms are enabled.
 *
 * @since 3.0.0
 *
 * @param object $term     The term.
 * @param string $taxonomy The taxonomy for `$term`. Should be 'category' or 'post_tag', as these are
 *                         the only taxonomies which are processed by this function; anything else
 *                         will be returned untouched.
 * @return object|array Returns `$term`, after filtering the 'slug' field with sanitize_title()
 *                      if $taxonomy is 'category' or 'post_tag'.
 */
function sync_category_tag_slugs( $term, $taxonomy ) {
	if ( global_terms_enabled() && ( $taxonomy == 'category' || $taxonomy == 'post_tag' ) ) {
		if ( is_object( $term ) ) {
			$term->slug = sanitize_title( $term->name );
		} else {
			$term['slug'] = sanitize_title( $term['name'] );
		}
	}
	return $term;
}

/**
 * Displays an access denied message when a user tries to view a site's dashboard they
 * do not have access to.
 *
 * @since 3.2.0
 * @access private
 */
function _access_denied_splash() {
	if ( ! is_user_logged_in() || is_network_admin() )
		return;

	$blogs = get_blogs_of_user( get_current_user_id() );

	if ( wp_list_filter( $blogs, array( 'userblog_id' => get_current_blog_id() ) ) )
		return;

	$blog_name = get_bloginfo( 'name' );

	if ( empty( $blogs ) )
		wp_die( sprintf( __( 'You attempted to access the "%1$s" dashboard, but you do not currently have privileges on this site. If you believe you should be able to access the "%1$s" dashboard, please contact your network administrator.' ), $blog_name ), 403 );

	$output = '<p>' . sprintf( __( 'You attempted to access the "%1$s" dashboard, but you do not currently have privileges on this site. If you believe you should be able to access the "%1$s" dashboard, please contact your network administrator.' ), $blog_name ) . '</p>';
	$output .= '<p>' . __( 'If you reached this screen by accident and meant to visit one of your own sites, here are some shortcuts to help you find your way.' ) . '</p>';

	$output .= '<h3>' . __('Your Sites') . '</h3>';
	$output .= '<table>';

	foreach ( $blogs as $blog ) {
		$output .= '<tr>';
		$output .= "<td>{$blog->blogname}</td>";
		$output .= '<td><a href="' . esc_url( get_admin_url( $blog->userblog_id ) ) . '">' . __( 'Visit Dashboard' ) . '</a> | ' .
			'<a href="' . esc_url( get_home_url( $blog->userblog_id ) ). '">' . __( 'View Site' ) . '</a></td>';
		$output .= '</tr>';
	}

	$output .= '</table>';

	wp_die( $output, 403 );
}

/**
 * Checks if the current user has permissions to import new users.
 *
 * @since 3.0.0
 *
 * @param string $permission A permission to be checked. Currently not used.
 * @return bool True if the user has proper permissions, false if they do not.
 */
function check_import_new_users( $permission ) {
	if ( !is_super_admin() )
		return false;
	return true;
}
// See "import_allow_fetch_attachments" and "import_attachment_size_limit" filters too.

/**
 * Generates and displays a drop-down of available languages.
 *
 * @since 3.0.0
 *
 * @param array  $lang_files Optional. An array of the language files. Default empty array.
 * @param string $current    Optional. The current language code. Default empty.
 */
function mu_dropdown_languages( $lang_files = array(), $current = '' ) {
	$flag = false;
	$output = array();

	foreach ( (array) $lang_files as $val ) {
		$code_lang = basename( $val, '.mo' );

		if ( $code_lang == 'en_US' ) { // American English
			$flag = true;
			$ae = __( 'American English' );
			$output[$ae] = '<option value="' . esc_attr( $code_lang ) . '"' . selected( $current, $code_lang, false ) . '> ' . $ae . '</option>';
		} elseif ( $code_lang == 'en_GB' ) { // British English
			$flag = true;
			$be = __( 'British English' );
			$output[$be] = '<option value="' . esc_attr( $code_lang ) . '"' . selected( $current, $code_lang, false ) . '> ' . $be . '</option>';
		} else {
			$translated = format_code_lang( $code_lang );
			$output[$translated] = '<option value="' . esc_attr( $code_lang ) . '"' . selected( $current, $code_lang, false ) . '> ' . esc_html ( $translated ) . '</option>';
		}

	}

	if ( $flag === false ) // WordPress english
		$output[] = '<option value=""' . selected( $current, '', false ) . '>' . __( 'English' ) . "</option>";

	// Order by name
	uksort( $output, 'strnatcasecmp' );

	/**
	 * Filters the languages available in the dropdown.
	 *
	 * @since MU
	 *
	 * @param array $output     HTML output of the dropdown.
	 * @param array $lang_files Available language files.
	 * @param string $current   The current language code.
	 */
	$output = apply_filters( 'mu_dropdown_languages', $output, $lang_files, $current );

	echo implode( "\n\t", $output );
}

/**
 * Displays an admin notice to upgrade all sites after a core upgrade.
 *
 * @since 3.0.0
 *
 * @global int    $wp_db_version The version number of the database.
 * @global string $pagenow
 *
 * @return false False if the current user is not a super admin.
 */
function site_admin_notice() {
	global $wp_db_version, $pagenow;

	if ( ! is_super_admin() ) {
		return false;
	}

	if ( 'upgrade.php' == $pagenow ) {
		return;
	}

	if ( get_site_option( 'wpmu_upgrade_site' ) != $wp_db_version ) {
		echo "<div class='update-nag'>" . sprintf( __( 'Thank you for Updating! Please visit the <a href="%s">Upgrade Network</a> page to update all your sites.' ), esc_url( network_admin_url( 'upgrade.php' ) ) ) . "</div>";
	}
}

/**
 * Avoids a collision between a site slug and a permalink slug.
 *
 * In a subdirectory install this will make sure that a site and a post do not use the
 * same subdirectory by checking for a site with the same name as a new post.
 *
 * @since 3.0.0
 *
 * @param array $data    An array of post data.
 * @param array $postarr An array of posts. Not currently used.
 * @return array The new array of post data after checking for collisions.
 */
function avoid_blog_page_permalink_collision( $data, $postarr ) {
	if ( is_subdomain_install() )
		return $data;
	if ( $data['post_type'] != 'page' )
		return $data;
	if ( !isset( $data['post_name'] ) || $data['post_name'] == '' )
		return $data;
	if ( !is_main_site() )
		return $data;

	$post_name = $data['post_name'];
	$c = 0;
	while( $c < 10 && get_id_from_blogname( $post_name ) ) {
		$post_name .= mt_rand( 1, 10 );
		$c ++;
	}
	if ( $post_name != $data['post_name'] ) {
		$data['post_name'] = $post_name;
	}
	return $data;
}

/**
 * Handles the display of choosing a user's primary site.
 *
 * This displays the user's primary site and allows the user to choose
 * which site is primary.
 *
 * @since 3.0.0
 */
function choose_primary_blog() {
	?>
	<table class="form-table">
	<tr>
	<?php /* translators: My sites label */ ?>
		<th scope="row"><label for="primary_blog"><?php _e( 'Primary Site' ); ?></label></th>
		<td>
		<?php
		$all_blogs = get_blogs_of_user( get_current_user_id() );
		$primary_blog = get_user_meta( get_current_user_id(), 'primary_blog', true );
		if ( count( $all_blogs ) > 1 ) {
			$found = false;
			?>
			<select name="primary_blog" id="primary_blog">
				<?php foreach ( (array) $all_blogs as $blog ) {
					if ( $primary_blog == $blog->userblog_id )
						$found = true;
					?><option value="<?php echo $blog->userblog_id ?>"<?php selected( $primary_blog, $blog->userblog_id ); ?>><?php echo esc_url( get_home_url( $blog->userblog_id ) ) ?></option><?php
				} ?>
			</select>
			<?php
			if ( !$found ) {
				$blog = reset( $all_blogs );
				update_user_meta( get_current_user_id(), 'primary_blog', $blog->userblog_id );
			}
		} elseif ( count( $all_blogs ) == 1 ) {
			$blog = reset( $all_blogs );
			echo esc_url( get_home_url( $blog->userblog_id ) );
			if ( $primary_blog != $blog->userblog_id ) // Set the primary blog again if it's out of sync with blog list.
				update_user_meta( get_current_user_id(), 'primary_blog', $blog->userblog_id );
		} else {
			echo "N/A";
		}
		?>
		</td>
	</tr>
	</table>
	<?php
}

/**
 * Whether or not we can edit this network from this page.
 *
 * By default editing of network is restricted to the Network Admin for that `$site_id`
 * this allows for this to be overridden.
 *
 * @since 3.1.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param int $site_id The network/site ID to check.
 * @return bool True if network can be edited, otherwise false.
 */
function can_edit_network( $site_id ) {
	global $wpdb;

	if ( $site_id == $wpdb->siteid )
		$result = true;
	else
		$result = false;

	/**
	 * Filters whether this network can be edited from this page.
	 *
	 * @since 3.1.0
	 *
	 * @param bool $result  Whether the network can be edited from this page.
	 * @param int  $site_id The network/site ID to check.
	 */
	return apply_filters( 'can_edit_network', $result, $site_id );
}

/**
 * Thickbox image paths for Network Admin.
 *
 * @since 3.1.0
 *
 * @access private
 */
function _thickbox_path_admin_subfolder() {
?>
<script type="text/javascript">
var tb_pathToImage = "<?php echo includes_url( 'js/thickbox/loadingAnimation.gif', 'relative' ); ?>";
</script>
<?php
}

/**
 *
 * @param array $users
 */
function confirm_delete_users( $users ) {
	$current_user = wp_get_current_user();
	if ( ! is_array( $users ) || empty( $users ) ) {
		return false;
	}
	?>
	<h1><?php esc_html_e( 'Users' ); ?></h1>

	<?php if ( 1 == count( $users ) ) : ?>
		<p><?php _e( 'You have chosen to delete the user from all networks and sites.' ); ?></p>
	<?php else : ?>
		<p><?php _e( 'You have chosen to delete the following users from all networks and sites.' ); ?></p>
	<?php endif; ?>

	<form action="users.php?action=dodelete" method="post">
	<input type="hidden" name="dodelete" />
	<?php
	wp_nonce_field( 'ms-users-delete' );
	$site_admins = get_super_admins();
	$admin_out = '<option value="' . esc_attr( $current_user->ID ) . '">' . $current_user->user_login . '</option>'; ?>
	<table class="form-table">
	<?php foreach ( ( $allusers = (array) $_POST['allusers'] ) as $user_id ) {
		if ( $user_id != '' && $user_id != '0' ) {
			$delete_user = get_userdata( $user_id );

			if ( ! current_user_can( 'delete_user', $delete_user->ID ) ) {
				wp_die( sprintf( __( 'Warning! User %s cannot be deleted.' ), $delete_user->user_login ) );
			}

			if ( in_array( $delete_user->user_login, $site_admins ) ) {
				wp_die( sprintf( __( 'Warning! User cannot be deleted. The user %s is a network administrator.' ), '<em>' . $delete_user->user_login . '</em>' ) );
			}
			?>
			<tr>
				<th scope="row"><?php echo $delete_user->user_login; ?>
					<?php echo '<input type="hidden" name="user[]" value="' . esc_attr( $user_id ) . '" />' . "\n"; ?>
				</th>
			<?php $blogs = get_blogs_of_user( $user_id, true );

			if ( ! empty( $blogs ) ) {
				?>
				<td><fieldset><p><legend><?php printf(
					/* translators: user login */
					__( 'What should be done with content owned by %s?' ),
					'<em>' . $delete_user->user_login . '</em>'
				); ?></legend></p>
				<?php
				foreach ( (array) $blogs as $key => $details ) {
					$blog_users = get_users( array( 'blog_id' => $details->userblog_id, 'fields' => array( 'ID', 'user_login' ) ) );
					if ( is_array( $blog_users ) && !empty( $blog_users ) ) {
						$user_site = "<a href='" . esc_url( get_home_url( $details->userblog_id ) ) . "'>{$details->blogname}</a>";
						$user_dropdown = '<label for="reassign_user" class="screen-reader-text">' . __( 'Select a user' ) . '</label>';
						$user_dropdown .= "<select name='blog[$user_id][$key]' id='reassign_user'>";
						$user_list = '';
						foreach ( $blog_users as $user ) {
							if ( ! in_array( $user->ID, $allusers ) ) {
								$user_list .= "<option value='{$user->ID}'>{$user->user_login}</option>";
							}
						}
						if ( '' == $user_list ) {
							$user_list = $admin_out;
						}
						$user_dropdown .= $user_list;
						$user_dropdown .= "</select>\n";
						?>
						<ul style="list-style:none;">
							<li><?php printf( __( 'Site: %s' ), $user_site ); ?></li>
							<li><label><input type="radio" id="delete_option0" name="delete[<?php echo $details->userblog_id . '][' . $delete_user->ID ?>]" value="delete" checked="checked" />
							<?php _e( 'Delete all content.' ); ?></label></li>
							<li><label><input type="radio" id="delete_option1" name="delete[<?php echo $details->userblog_id . '][' . $delete_user->ID ?>]" value="reassign" />
							<?php _e( 'Attribute all content to:' ); ?></label>
							<?php echo $user_dropdown; ?></li>
						</ul>
						<?php
					}
				}
				echo "</fieldset></td></tr>";
			} else {
				?>
				<td><fieldset><p><legend><?php _e( 'User has no sites or content and will be deleted.' ); ?></legend></p>
			<?php } ?>
			</tr>
		<?php
		}
	}

	?>
	</table>
	<?php
	/** This action is documented in wp-admin/users.php */
	do_action( 'delete_user_form', $current_user, $allusers );

	if ( 1 == count( $users ) ) : ?>
		<p><?php _e( 'Once you hit &#8220;Confirm Deletion&#8221;, the user will be permanently removed.' ); ?></p>
	<?php else : ?>
		<p><?php _e( 'Once you hit &#8220;Confirm Deletion&#8221;, these users will be permanently removed.' ); ?></p>
	<?php endif;

	submit_button( __('Confirm Deletion'), 'primary' );
	?>
	</form>
	<?php
	return true;
}

/**
 * Print JavaScript in the header on the Network Settings screen.
 *
 * @since 4.1.0
 */
function network_settings_add_js() {
?>
<script type="text/javascript">
jQuery(document).ready( function($) {
	var languageSelect = $( '#WPLANG' );
	$( 'form' ).submit( function() {
		// Don't show a spinner for English and installed languages,
		// as there is nothing to download.
		if ( ! languageSelect.find( 'option:selected' ).data( 'installed' ) ) {
			$( '#submit', this ).after( '<span class="spinner language-install-spinner" />' );
		}
	});
});
</script>
<?php
}

/**
 * Outputs the HTML for a network's "Edit Site" tabular interface.
 *
 * @since 4.6.0
 *
 * @param $args {
 *     Optional. Array or string of Query parameters. Default empty array.
 *
 *     @type int    $blog_id  The site ID. Default is the current site.
 *     @type array  $links    The tabs to include with (label|url|cap) keys.
 *     @type string $selected The ID of the selected link.
 * }
 */
function network_edit_site_nav( $args = array() ) {

	/**
	 * Filters the links that appear on site-editing network pages.
	 *
	 * Default links: 'site-info', 'site-users', 'site-themes', and 'site-settings'.
	 *
	 * @since 4.6.0
	 *
	 * @param array $links {
	 *     An array of link data representing individual network admin pages.
	 *
	 *     @type array $link_slug {
	 *         An array of information about the individual link to a page.
	 *
	 *         $type string $label Label to use for the link.
	 *         $type string $url   URL, relative to `network_admin_url()` to use for the link.
	 *         $type string $cap   Capability required to see the link.
	 *     }
	 * }
	 */
	$links = apply_filters( 'network_edit_site_nav_links', array(
		'site-info'     => array( 'label' => __( 'Info' ),     'url' => 'site-info.php',     'cap' => 'manage_sites' ),
		'site-users'    => array( 'label' => __( 'Users' ),    'url' => 'site-users.php',    'cap' => 'manage_sites' ),
		'site-themes'   => array( 'label' => __( 'Themes' ),   'url' => 'site-themes.php',   'cap' => 'manage_sites' ),
		'site-settings' => array( 'label' => __( 'Settings' ), 'url' => 'site-settings.php', 'cap' => 'manage_sites' )
	) );

	// Parse arguments
	$r = wp_parse_args( $args, array(
		'blog_id'  => isset( $_GET['blog_id'] ) ? (int) $_GET['blog_id'] : 0,
		'links'    => $links,
		'selected' => 'site-info',
	) );

	// Setup the links array
	$screen_links = array();

	// Loop through tabs
	foreach ( $r['links'] as $link_id => $link ) {

		// Skip link if user can't access
		if ( ! current_user_can( $link['cap'], $r['blog_id'] ) ) {
			continue;
		}

		// Link classes
		$classes = array( 'nav-tab' );

		// Selected is set by the parent OR assumed by the $pagenow global
		if ( $r['selected'] === $link_id || $link['url'] === $GLOBALS['pagenow'] ) {
			$classes[] = 'nav-tab-active';
		}

		// Escape each class
		$esc_classes = implode( ' ', $classes );

		// Get the URL for this link
		$url = add_query_arg( array( 'id' => $r['blog_id'] ), network_admin_url( $link['url'] ) );

		// Add link to nav links
		$screen_links[ $link_id ] = '<a href="' . esc_url( $url ) . '" id="' . esc_attr( $link_id ) . '" class="' . $esc_classes . '">' . esc_html( $link['label'] ) . '</a>';
	}

	// All done!
	echo '<h2 class="nav-tab-wrapper wp-clearfix">';
	echo implode( '', $screen_links );
	echo '</h2>';
}

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