<?php
/**
* Options Management Administration Screen.
*
* If accessed directly in a browser this page shows a list of all saved options
* along with editable fields for their values. Serialized data is not supported
* and there is no way to remove options via this page. It is not linked to from
* anywhere else in the admin.
*
* This file is also the target of the forms in core and custom options pages
* that use the Settings API. In this case it saves the new option values
* and returns the user to their page of origin.
*
* @package WordPress
* @subpackage Administration
*/

/** WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

// Used in the HTML title tag.
$title = __( 'Settings' );
$this_file = 'options.php';
$parent_file = 'options-general.php';

$action = ! empty( $_REQUEST['action'] ) ? sanitize_text_field( $_REQUEST['action'] ) : '';
$option_page = ! empty( $_REQUEST['option_page'] ) ? sanitize_text_field( $_REQUEST['option_page'] ) : '';

$capability = 'manage_options';

// This is for back compat and will eventually be removed.
if ( empty( $option_page ) ) {
$option_page = 'options';
} else {

/**
* Filters the capability required when using the Settings API.
*
* By default, the options groups for all registered settings require the manage_options capability.
* This filter is required to change the capability required for a certain options page.
*
* @since 3.2.0
*
* @param string $capability The capability used for the page, which is manage_options by default.
*/
$capability = apply_filters( "option_page_capability_{$option_page}", $capability );
}

if ( ! current_user_can( $capability ) ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to manage options for this site.' ) . '</p>',
403
);
}

// Handle admin email change requests.
if ( ! empty( $_GET['adminhash'] ) ) {
$new_admin_details = get_option( 'adminhash' );
$redirect = 'options-general.php?updated=false';

if ( is_array( $new_admin_details )
&& hash_equals( $new_admin_details['hash'], $_GET['adminhash'] )
&& ! empty( $new_admin_details['newemail'] )
) {
update_option( 'admin_email', $new_admin_details['newemail'] );
delete_option( 'adminhash' );
delete_option( 'new_admin_email' );
$redirect = 'options-general.php?updated=true';
}

wp_redirect( admin_url( $redirect ) );
exit;
} elseif ( ! empty( $_GET['dismiss'] ) && 'new_admin_email' === $_GET['dismiss'] ) {
check_admin_referer( 'dismiss-' . get_current_blog_id() . '-new_admin_email' );
delete_option( 'adminhash' );
delete_option( 'new_admin_email' );
wp_redirect( admin_url( 'options-general.php?updated=true' ) );
exit;
}

if ( is_multisite() && ! current_user_can( 'manage_network_options' ) && 'update' !== $action ) {
wp_die(
'<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
'<p>' . __( 'Sorry, you are not allowed to delete these items.' ) . '</p>',
403
);
}

$allowed_options = array(
'general' => array(
'blogname',
'blogdescription',
'site_icon',
'gmt_offset',
'date_format',
'time_format',
'start_of_week',
'timezone_string',
'WPLANG',
'new_admin_email',
),
'discussion' => array(
'default_pingback_flag',
'default_ping_status',
'default_comment_status',
'comments_notify',
'moderation_notify',
'comment_moderation',
'require_name_email',
'comment_previously_approved',
'comment_max_links',
'moderation_keys',
'disallowed_keys',
'show_avatars',
'avatar_rating',
'avatar_default',
'close_comments_for_old_posts',
'close_comments_days_old',
'thread_comments',
'thread_comments_depth',
'page_comments',
'comments_per_page',
'default_comments_page',
'comment_order',
'comment_registration',
'show_comments_cookies_opt_in',
),
'media' => array(
'thumbnail_size_w',
'thumbnail_size_h',
'thumbnail_crop',
'medium_size_w',
'medium_size_h',
'large_size_w',
'large_size_h',
'image_default_size',
'image_default_align',
'image_default_link_type',
),
'reading' => array(
'posts_per_page',
'posts_per_rss',
'rss_use_excerpt',
'show_on_front',
'page_on_front',
'page_for_posts',
'blog_public',
),
'writing' => array(
'default_category',
'default_email_category',
'default_link_category',
'default_post_format',
),
);
$allowed_options['misc'] = array();
$allowed_options['options'] = array();
$allowed_options['privacy'] = array();

/**
* Filters whether the post-by-email functionality is enabled.
*
* @since 3.0.0
*
* @param bool $enabled Whether post-by-email configuration is enabled. Default true.
*/
if ( apply_filters( 'enable_post_by_email_configuration', true ) ) {
$allowed_options['writing'][] = 'mailserver_url';
$allowed_options['writing'][] = 'mailserver_port';
$allowed_options['writing'][] = 'mailserver_login';
$allowed_options['writing'][] = 'mailserver_pass';
}

if ( ! is_utf8_charset() ) {
$allowed_options['reading'][] = 'blog_charset';
}

if ( get_site_option( 'initial_db_version' ) < 32453 ) {
$allowed_options['writing'][] = 'use_smilies';
$allowed_options['writing'][] = 'use_balanceTags';
}

if ( ! is_multisite() ) {
if ( ! defined( 'WP_SITEURL' ) ) {
$allowed_options['general'][] = 'siteurl';
}
if ( ! defined( 'WP_HOME' ) ) {
$allowed_options['general'][] = 'home';
}

$allowed_options['general'][] = 'users_can_register';
$allowed_options['general'][] = 'default_role';

if ( '1' === get_option( 'blog_public' ) ) {
$allowed_options['writing'][] = 'ping_sites';
}

$allowed_options['media'][] = 'uploads_use_yearmonth_folders';

/*
* If upload_url_path is not the default (empty),
* or upload_path is not the default ('wp-content/uploads' or empty),
* they can be edited, otherwise they're locked.
*/
if ( get_option( 'upload_url_path' )
|| get_option( 'upload_path' ) && 'wp-content/uploads' !== get_option( 'upload_path' )
) {
$allowed_options['media'][] = 'upload_path';
$allowed_options['media'][] = 'upload_url_path';
}
}

/**
* Filters the allowed options list.
*
* @since 2.7.0
* @deprecated 5.5.0 Use {@see 'allowed_options'} instead.
*
* @param array $allowed_options The allowed options list.
*/
$allowed_options = apply_filters_deprecated(
'whitelist_options',
array( $allowed_options ),
'5.5.0',
'allowed_options',
__( 'Please consider writing more inclusive code.' )
);

/**
* Filters the allowed options list.
*
* @since 5.5.0
*
* @param array $allowed_options The allowed options list.
*/
$allowed_options = apply_filters( 'allowed_options', $allowed_options );

if ( 'update' === $action ) { // We are saving settings sent from a settings page.
if ( 'options' === $option_page && ! isset( $_POST['option_page'] ) ) { // This is for back compat and will eventually be removed.
$unregistered = true;
check_admin_referer( 'update-options' );
} else {
$unregistered = false;
check_admin_referer( $option_page . '-options' );
}

if ( ! isset( $allowed_options[ $option_page ] ) ) {
wp_die(
sprintf(
/* translators: %s: The options page name. */
__( '<strong>Error:</strong> The %s options page is not in the allowed options list.' ),
'<code>' . esc_html( $option_page ) . '</code>'
)
);
}

if ( 'options' === $option_page ) {
if ( is_multisite() && ! current_user_can( 'manage_network_options' ) ) {
wp_die( __( 'Sorry, you are not allowed to modify unregistered settings for this site.' ) );
}
$options = isset( $_POST['page_options'] ) ? explode( ',', wp_unslash( $_POST['page_options'] ) ) : null;
} else {
$options = $allowed_options[ $option_page ];
}

if ( 'general' === $option_page ) {
// Handle custom date/time formats.
if ( ! empty( $_POST['date_format'] ) && isset( $_POST['date_format_custom'] )
&& '\c\u\s\t\o\m' === wp_unslash( $_POST['date_format'] )
) {
$_POST['date_format'] = $_POST['date_format_custom'];
}

if ( ! empty( $_POST['time_format'] ) && isset( $_POST['time_format_custom'] )
&& '\c\u\s\t\o\m' === wp_unslash( $_POST['time_format'] )
) {
$_POST['time_format'] = $_POST['time_format_custom'];
}

// Map UTC+- timezones to gmt_offsets and set timezone_string to empty.
if ( ! empty( $_POST['timezone_string'] ) && preg_match( '/^UTC[+-]/', $_POST['timezone_string'] ) ) {
$_POST['gmt_offset'] = $_POST['timezone_string'];
$_POST['gmt_offset'] = preg_replace( '/UTC\+?/', '', $_POST['gmt_offset'] );
$_POST['timezone_string'] = '';
} elseif ( isset( $_POST['timezone_string'] ) && ! in_array( $_POST['timezone_string'], timezone_identifiers_list( DateTimeZone::ALL_WITH_BC ), true ) ) {
// Reset to the current value.
$current_timezone_string = get_option( 'timezone_string' );

if ( ! empty( $current_timezone_string ) ) {
$_POST['timezone_string'] = $current_timezone_string;
} else {
$_POST['gmt_offset'] = get_option( 'gmt_offset' );
$_POST['timezone_string'] = '';
}

add_settings_error(
'general',
'settings_updated',
__( 'The timezone you have entered is not valid. Please select a valid timezone.' ),
'error'
);
}

// Handle translation installation.
if ( ! empty( $_POST['WPLANG'] ) && current_user_can( 'install_languages' ) ) {
require_once ABSPATH . 'wp-admin/includes/translation-install.php';

if ( wp_can_install_language_pack() ) {
$language = wp_download_language_pack( $_POST['WPLANG'] );
if ( $language ) {
$_POST['WPLANG'] = $language;
}
}
}
}

if ( $options ) {
$user_language_old = get_user_locale();

foreach ( $options as $option ) {
if ( $unregistered ) {
_deprecated_argument(
'options.php',
'2.7.0',
sprintf(
/* translators: 1: The option/setting, 2: Documentation URL. */
__( 'The %1$s setting is unregistered. Unregistered settings are deprecated. See <a href="%2$s">documentation on the Settings API</a>.' ),
'<code>' . esc_html( $option ) . '</code>',
__( 'https://developer.wordpress.org/plugins/settings/settings-api/' )
)
);
}

$option = trim( $option );
$value = null;
if ( isset( $_POST[ $option ] ) ) {
$value = $_POST[ $option ];
if ( ! is_array( $value ) ) {
$value = trim( $value );
}
$value = wp_unslash( $value );
}
update_option( $option, $value );
}

/*
* Switch translation in case WPLANG was changed.
* The global $locale is used in get_locale() which is
* used as a fallback in get_user_locale().
*/
unset( $GLOBALS['locale'] );
$user_language_new = get_user_locale();
if ( $user_language_old !== $user_language_new ) {
load_default_textdomain( $user_language_new );
}
} else {
add_settings_error( 'general', 'settings_updated', __( 'Settings save failed.' ), 'error' );
}

/*
* Handle settings errors and return to options page.
*/

// If no settings errors were registered add a general 'updated' message.
if ( ! count( get_settings_errors() ) ) {
add_settings_error( 'general', 'settings_updated', __( 'Settings saved.' ), 'success' );
}

set_transient( 'settings_errors', get_settings_errors(), 30 ); // 30 seconds.

// Redirect back to the settings page that was submitted.
$goback = add_query_arg( 'settings-updated', 'true', wp_get_referer() );
wp_redirect( $goback );
exit;
}

require_once ABSPATH . 'wp-admin/admin-header.php';
?>

<div class="wrap">
<h1><?php esc_html_e( 'All Settings' ); ?></h1>

<?php
wp_admin_notice(
'<strong>' . __( 'Warning:' ) . '</strong> ' . __( 'This page allows direct access to your site settings. You can break things here. Please be cautious!' ),
array(
'type' => 'warning',
)
);
?>
<form name="form" action="options.php" method="post" id="all-options">
<?php wp_nonce_field( 'options-options' ); ?>
<input type="hidden" name="action" value="update" />
<input type="hidden" name="option_page" value="options" />
<table class="form-table" role="presentation">
<?php
$options = $wpdb->get_results( "SELECT * FROM $wpdb->options ORDER BY option_name" );

foreach ( (array) $options as $option ) :
$disabled = false;

if ( '' === $option->option_name ) {
continue;
}

if ( is_serialized( $option->option_value ) ) {
if ( is_serialized_string( $option->option_value ) ) {
// This is a serialized string, so we should display it.
$value = maybe_unserialize( $option->option_value );
$options_to_update[] = $option->option_name;
$class = 'all-options';
} else {
$value = 'SERIALIZED DATA';
$disabled = true;
$class = 'all-options disabled';
}
} else {
$value = $option->option_value;
$options_to_update[] = $option->option_name;
$class = 'all-options';
}

$name = esc_attr( $option->option_name );
?>
<tr>
<th scope="row"><label for="<?php echo $name; ?>"><?php echo esc_html( $option->option_name ); ?></label></th>
<td>
<?php if ( str_contains( $value, "\n" ) ) : ?>
<textarea class="<?php echo $class; ?>" name="<?php echo $name; ?>" id="<?php echo $name; ?>" cols="30" rows="5"><?php echo esc_textarea( $value ); ?></textarea>
<?php else : ?>
<input class="regular-text <?php echo $class; ?>" type="text" name="<?php echo $name; ?>" id="<?php echo $name; ?>" value="<?php echo esc_attr( $value ); ?>"<?php disabled( $disabled, true ); ?> />
<?php endif; ?></td>
</tr>
<?php endforeach; ?>
</table>

<input type="hidden" name="page_options" value="<?php echo esc_attr( implode( ',', $options_to_update ) ); ?>" />

<?php submit_button( __( 'Save Changes' ), 'primary', 'Update' ); ?>

</form>
</div>

<?php
require_once ABSPATH . 'wp-admin/admin-footer.php';