File Manager

<?php

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

function nggallery_wpmu_setup() {

	// to be sure.
	if ( ! is_super_admin() ) {
		die( 'You are not allowed to call this page.' );
	}

	// Get current settings.
	$ngg_options = \Imagely\NGG\Settings\GlobalSettings::get_instance();

	$messagetext = [];

	if ( isset( $_POST['updateoption'] ) ) {
		check_admin_referer( 'ngg_wpmu_settings' );

		// Set all options other than the gallerypath.
		$valid_options = [
			'wpmuRoles',
			'wpmuQuotaCheck',
			'wpmuZipUpload',
			'wpmuImportFolder',
			'wpmuRoles',
		];

		foreach ( $valid_options as $option_name ) {
			$option_value = isset( $_POST[ $option_name ] ) ? intval( $_POST[ $option_name ] ) : 0;
			$ngg_options->set( $option_name, $option_value );
		}

		if ( isset( $_POST['gallerypath'] ) ) {
			$new_gallerypath = trailingslashit( $_POST['gallerypath'] );
			$fs              = \Imagely\NGG\Util\Filesystem::get_instance();
			$root            = $fs->get_document_root( 'galleries' );
			if ( $root[0] != DIRECTORY_SEPARATOR ) {
				$root = DIRECTORY_SEPARATOR . $root;
			}

			$gallery_abspath = $fs->get_absolute_path( $fs->join_paths( $root, $new_gallerypath ) );

			if ( $gallery_abspath[0] != DIRECTORY_SEPARATOR ) {
				$gallery_abspath = DIRECTORY_SEPARATOR . $gallery_abspath;
			}

			if ( strpos( $gallery_abspath, $root ) === false ) {
				$messagetext[] = sprintf( __( 'Gallery path must be located in %s.', 'nggallery' ), $root );
			} elseif ( preg_match( '\.+[/\\]', $new_gallerypath ) ) {
				$messagetext[] = __( 'Gallery path cannot include relative paths.', 'nggallery' );
			} else {
				$ngg_options->set( 'gallerypath', $new_gallerypath );
				$ngg_options->save();
			}
		}

		$ngg_options->save();
		$messagetext[] = __( 'Updated successfully.', 'nggallery' );

		$messagetext = implode( ' ', $messagetext );
	}

	// message windows.
	if ( ! empty( $messagetext ) ) {
		echo '<!-- Last Action --><div id="message" class="updated fade"><p>' . esc_html( $messagetext ) . '</p></div>'; }

	?>

	<div class="wrap">
		<h2><?php esc_html_e( 'Network Options', 'nggallery' ); ?></h2>
		<form name="generaloptions" method="post">
	<?php wp_nonce_field( 'ngg_wpmu_settings' ); ?>
			<table class="form-table">
				<tr valign="top">
					<th align="left"><?php esc_html_e( 'Gallery path', 'nggallery' ); ?></th>
					<td><input type="text" size="50" name="gallerypath" value="<?php echo $ngg_options->get( 'gallerypath' ); ?>" /><br />
				<?php esc_html_e( 'This is the default path for all blogs. With the placeholder %BLOG_ID% you can organize the folder structure better.', 'nggallery' ); ?>
				<?php echo str_replace( '%s', '<code>wp-content/uploads/sites/%BLOG_ID%/nggallery/</code>', __( 'The default setting should be %s', 'nggallery' ) ); ?>
					</td>
				</tr>
				<tr>
					<th valign="top"><?php esc_html_e( 'Enable upload quota check', 'nggallery' ); ?>:</th>
					<td><input name="wpmuQuotaCheck" type="checkbox" value="1" <?php checked( '1', $ngg_options->get( 'wpmuQuotaCheck' ) ); ?> />
				<?php esc_html_e( 'Should work if the gallery is bellow the blog.dir', 'nggallery' ); ?>
					</td>
				</tr>
				<tr>
					<th valign="top"><?php esc_html_e( 'Enable zip upload option', 'nggallery' ); ?>:</th>
					<td><input name="wpmuZipUpload" type="checkbox" value="1" <?php checked( '1', $ngg_options->get( 'wpmuZipUpload' ) ); ?> />
				<?php esc_html_e( 'Allow users to upload zip folders.', 'nggallery' ); ?>
					</td>
				</tr>
				<tr>
					<th valign="top"><?php esc_html_e( 'Enable import function', 'nggallery' ); ?>:</th>
					<td><input name="wpmuImportFolder" type="checkbox" value="1" <?php checked( '1', $ngg_options->get( 'wpmuImportFolder' ) ); ?> />
				<?php esc_html_e( 'Allow users to import images folders from the server.', 'nggallery' ); ?>
					</td>
				</tr>
				<tr>
					<th valign="top"><?php esc_html_e( 'Enable roles/capabilities', 'nggallery' ); ?>:</th>
					<td><input name="wpmuRoles" type="checkbox" value="1" <?php checked( '1', $ngg_options->get( 'wpmuRoles' ) ); ?> />
				<?php esc_html_e( 'Allow users to change the roles for other blog authors.', 'nggallery' ); ?>
					</td>
				</tr>
			</table>
			<div class="submit"><input type="submit" name="updateoption" value="<?php esc_attr_e( 'Update', 'nggallery' ); ?>"/></div>
		</form>
	</div>

	<?php
}