| 1 |
<?php |
| 2 |
/** |
| 3 |
* Admin AJAX Controller for TablePress with functionality for the AJAX backend |
| 4 |
* |
| 5 |
* @package TablePress |
| 6 |
* @subpackage Controllers |
| 7 |
* @author Tobias Bäthge |
| 8 |
* @since 1.0.0 |
| 9 |
*/ |
| 10 |
|
| 11 |
// Prohibit direct script loading. |
| 12 |
defined( 'ABSPATH' ) || die( 'No direct script access allowed!' ); |
| 13 |
|
| 14 |
/** |
| 15 |
* Admin AJAX Controller class, extends Base Controller Class |
| 16 |
* @package TablePress |
| 17 |
* @subpackage Controllers |
| 18 |
* @author Tobias Bäthge |
| 19 |
* @since 1.0.0 |
| 20 |
*/ |
| 21 |
class TablePress_Admin_AJAX_Controller extends TablePress_Controller { |
| 22 |
|
| 23 |
/** |
| 24 |
* Initiate Admin AJAX functionality. |
| 25 |
* |
| 26 |
* @since 1.0.0 |
| 27 |
*/ |
| 28 |
public function __construct() { |
| 29 |
// Buffer all outputs, to prevent errors/warnings being printed that make the JSON invalid. |
| 30 |
ob_start(); |
| 31 |
|
| 32 |
parent::__construct(); |
| 33 |
|
| 34 |
$ajax_actions = array( 'hide_message', 'save_table', 'preview_table' ); |
| 35 |
foreach ( $ajax_actions as $action ) { |
| 36 |
add_action( "wp_ajax_tablepress_{$action}", array( $this, "ajax_action_{$action}" ) ); |
| 37 |
} |
| 38 |
} |
| 39 |
|
| 40 |
/** |
| 41 |
* Hide a header message on an admin screen. |
| 42 |
* |
| 43 |
* @since 1.0.0 |
| 44 |
*/ |
| 45 |
public function ajax_action_hide_message() { |
| 46 |
if ( empty( $_GET['item'] ) ) { |
| 47 |
wp_die( '0' ); |
| 48 |
} else { |
| 49 |
$message_item = $_GET['item']; |
| 50 |
} |
| 51 |
|
| 52 |
TablePress::check_nonce( 'hide_message', $message_item, '_wpnonce', true ); |
| 53 |
|
| 54 |
if ( ! current_user_can( 'tablepress_list_tables' ) ) { |
| 55 |
wp_die( '-1' ); |
| 56 |
} |
| 57 |
|
| 58 |
TablePress::$model_options->update( "message_{$message_item}", false ); |
| 59 |
|
| 60 |
wp_die( '1' ); |
| 61 |
} |
| 62 |
|
| 63 |
/** |
| 64 |
* Save the table after the "Save Changes" button on the "Edit" screen has been clicked. |
| 65 |
* |
| 66 |
* @since 1.0.0 |
| 67 |
*/ |
| 68 |
public function ajax_action_save_table() { |
| 69 |
if ( empty( $_POST['tablepress'] ) || empty( $_POST['tablepress']['id'] ) ) { |
| 70 |
wp_die( '-1' ); |
| 71 |
} else { |
| 72 |
$edit_table = wp_unslash( $_POST['tablepress'] ); |
| 73 |
} |
| 74 |
|
| 75 |
// Check if the submitted nonce matches the generated nonce we created earlier, dies -1 on failure. |
| 76 |
TablePress::check_nonce( 'edit', $edit_table['id'], '_ajax_nonce', true ); |
| 77 |
|
| 78 |
// Ignore the request if the current user doesn't have sufficient permissions. |
| 79 |
if ( ! current_user_can( 'tablepress_edit_table', $edit_table['id'] ) ) { |
| 80 |
wp_die( '-1' ); |
| 81 |
} |
| 82 |
|
| 83 |
// Default response data. |
| 84 |
$success = false; |
| 85 |
$message = 'error_save'; |
| 86 |
$error_details = ''; |
| 87 |
do { // to be able to "break;" (allows for better readable code) |
| 88 |
// Load table, without table data, but with options and visibility settings. |
| 89 |
$existing_table = TablePress::$model_table->load( $edit_table['id'], false, true ); |
| 90 |
if ( is_wp_error( $existing_table ) ) { // maybe somehow load a new table here? (TablePress::$model_table->get_table_template())? |
| 91 |
// Add an error code to the existing WP_Error. |
| 92 |
$existing_table->add( 'ajax_save_table_load', '', $edit_table['id'] ); |
| 93 |
$error_details = $this->get_wp_error_string( $existing_table ); |
| 94 |
break; |
| 95 |
} |
| 96 |
|
| 97 |
// Check and convert data that was transmitted as JSON. |
| 98 |
if ( empty( $edit_table['data'] ) |
| 99 |
|| empty( $edit_table['options'] ) |
| 100 |
|| empty( $edit_table['visibility'] ) ) { |
| 101 |
// Create a new WP_Error. |
| 102 |
$empty_data_error = new WP_Error( 'ajax_save_table_data_empty', '', $edit_table['id'] ); |
| 103 |
$error_details = $this->get_wp_error_string( $empty_data_error ); |
| 104 |
break; |
| 105 |
} |
| 106 |
$edit_table['data'] = (array) json_decode( $edit_table['data'], true ); |
| 107 |
$edit_table['options'] = (array) json_decode( $edit_table['options'], true ); |
| 108 |
$edit_table['visibility'] = (array) json_decode( $edit_table['visibility'], true ); |
| 109 |
|
| 110 |
// Check consistency of new table, and then merge with existing table. |
| 111 |
$table = TablePress::$model_table->prepare_table( $existing_table, $edit_table, true, true ); |
| 112 |
if ( is_wp_error( $table ) ) { |
| 113 |
// Add an error code to the existing WP_Error. |
| 114 |
$table->add( 'ajax_save_table_prepare', '', $edit_table['id'] ); |
| 115 |
$error_details = $this->get_wp_error_string( $table ); |
| 116 |
break; |
| 117 |
} |
| 118 |
|
| 119 |
// DataTables Custom Commands can only be edit by trusted users. |
| 120 |
if ( ! current_user_can( 'unfiltered_html' ) ) { |
| 121 |
$table['options']['datatables_custom_commands'] = $existing_table['options']['datatables_custom_commands']; |
| 122 |
} |
| 123 |
|
| 124 |
// Save updated table. |
| 125 |
$saved = TablePress::$model_table->save( $table ); |
| 126 |
if ( is_wp_error( $saved ) ) { |
| 127 |
// Add an error code to the existing WP_Error. |
| 128 |
$saved->add( 'ajax_save_table_save', '', $table['id'] ); |
| 129 |
$error_details = $this->get_wp_error_string( $saved ); |
| 130 |
break; |
| 131 |
} |
| 132 |
|
| 133 |
// At this point, the table was saved successfully, possible ID change remains. |
| 134 |
$success = true; |
| 135 |
$message = 'success_save'; |
| 136 |
|
| 137 |
// Check if ID change is desired. |
| 138 |
if ( $table['id'] === $table['new_id'] ) { |
| 139 |
// If not, we are done. |
| 140 |
break; |
| 141 |
} |
| 142 |
|
| 143 |
// Change table ID. |
| 144 |
if ( current_user_can( 'tablepress_edit_table_id', $table['id'] ) ) { |
| 145 |
$id_changed = TablePress::$model_table->change_table_id( $table['id'], $table['new_id'] ); |
| 146 |
if ( ! is_wp_error( $id_changed ) ) { |
| 147 |
$message = 'success_save_success_id_change'; |
| 148 |
$table['id'] = $table['new_id']; |
| 149 |
} else { |
| 150 |
$message = 'success_save_error_id_change'; |
| 151 |
// Add an error code to the existing WP_Error. |
| 152 |
$id_changed->add( 'ajax_save_table_id_change', '', $table['new_id'] ); |
| 153 |
$error_details = $this->get_wp_error_string( $id_changed ); |
| 154 |
} |
| 155 |
} else { |
| 156 |
$message = 'success_save_error_id_change'; |
| 157 |
$error_details = 'table_id_could_not_be_changed: capability_check_failed'; |
| 158 |
} |
| 159 |
} while ( false ); // Do-while-loop through this exactly once, to be able to "break;" early. |
| 160 |
|
| 161 |
// Generate the response. |
| 162 |
|
| 163 |
// Common data for all responses. |
| 164 |
$response = array( |
| 165 |
'success' => $success, |
| 166 |
'message' => $message, |
| 167 |
); |
| 168 |
if ( $success ) { |
| 169 |
$response['table_id'] = $table['id']; |
| 170 |
$response['new_edit_nonce'] = wp_create_nonce( TablePress::nonce( 'edit', $table['id'] ) ); |
| 171 |
$response['new_preview_nonce'] = wp_create_nonce( TablePress::nonce( 'preview_table', $table['id'] ) ); |
| 172 |
$response['last_modified'] = TablePress::format_datetime( $table['last_modified'] ); |
| 173 |
$response['last_editor'] = TablePress::get_user_display_name( $table['options']['last_editor'] ); |
| 174 |
} |
| 175 |
if ( ! empty( $error_details ) ) { |
| 176 |
$response['error_details'] = esc_html( $error_details ); |
| 177 |
} |
| 178 |
// Buffer all outputs, to prevent errors/warnings being printed that make the JSON invalid. |
| 179 |
$output_buffer = ob_get_clean(); |
| 180 |
if ( ! empty( $output_buffer ) ) { |
| 181 |
$response['output_buffer'] = $output_buffer; |
| 182 |
} |
| 183 |
|
| 184 |
// Send the response. |
| 185 |
wp_send_json( $response ); |
| 186 |
} |
| 187 |
|
| 188 |
/** |
| 189 |
* Return the live preview data of table that has non-saved changes. |
| 190 |
* |
| 191 |
* @since 1.0.0 |
| 192 |
*/ |
| 193 |
public function ajax_action_preview_table() { |
| 194 |
if ( empty( $_POST['tablepress'] ) || empty( $_POST['tablepress']['id'] ) ) { |
| 195 |
wp_die( '-1' ); |
| 196 |
} else { |
| 197 |
$preview_table = wp_unslash( $_POST['tablepress'] ); |
| 198 |
} |
| 199 |
|
| 200 |
// Check if the submitted nonce matches the generated nonce we created earlier, dies -1 on failure. |
| 201 |
TablePress::check_nonce( 'preview_table', $preview_table['id'], '_ajax_nonce', true ); |
| 202 |
|
| 203 |
// Ignore the request if the current user doesn't have sufficient permissions. |
| 204 |
if ( ! current_user_can( 'tablepress_preview_table', $preview_table['id'] ) ) { |
| 205 |
wp_die( '-1' ); |
| 206 |
} |
| 207 |
|
| 208 |
// Default response data. |
| 209 |
$success = false; |
| 210 |
do { // to be able to "break;" (allows for better readable code) |
| 211 |
// Load table, without table data, but with options and visibility settings. |
| 212 |
$existing_table = TablePress::$model_table->load( $preview_table['id'], false, true ); |
| 213 |
if ( is_wp_error( $existing_table ) ) { // maybe somehow load a new table here? (TablePress::$model_table->get_table_template())? |
| 214 |
break; |
| 215 |
} |
| 216 |
|
| 217 |
// Check and convert data that was transmitted as JSON. |
| 218 |
if ( empty( $preview_table['data'] ) |
| 219 |
|| empty( $preview_table['options'] ) |
| 220 |
|| empty( $preview_table['visibility'] ) ) { |
| 221 |
break; |
| 222 |
} |
| 223 |
$preview_table['data'] = (array) json_decode( $preview_table['data'], true ); |
| 224 |
$preview_table['options'] = (array) json_decode( $preview_table['options'], true ); |
| 225 |
$preview_table['visibility'] = (array) json_decode( $preview_table['visibility'], true ); |
| 226 |
|
| 227 |
// Check consistency of new table, and then merge with existing table. |
| 228 |
$table = TablePress::$model_table->prepare_table( $existing_table, $preview_table, true, true ); |
| 229 |
if ( is_wp_error( $table ) ) { |
| 230 |
break; |
| 231 |
} |
| 232 |
|
| 233 |
// DataTables Custom Commands can only be edit by trusted users. |
| 234 |
if ( ! current_user_can( 'unfiltered_html' ) ) { |
| 235 |
$table['options']['datatables_custom_commands'] = $existing_table['options']['datatables_custom_commands']; |
| 236 |
} |
| 237 |
|
| 238 |
// If the ID has changed, and the new ID is valid, render with the new ID (important e.g. for CSS classes/HTML ID). |
| 239 |
if ( $table['id'] !== $table['new_id'] && 0 === preg_match( '/[^a-zA-Z0-9_-]/', $table['new_id'] ) ) { |
| 240 |
$table['id'] = $table['new_id']; |
| 241 |
} |
| 242 |
|
| 243 |
// Sanitize all table data to remove unsafe HTML from the preview output. |
| 244 |
$table = TablePress::$model_table->sanitize( $table ); |
| 245 |
|
| 246 |
// At this point, the table data is valid and sanitized and can be rendered. |
| 247 |
$success = true; |
| 248 |
} while ( false ); // Do-while-loop through this exactly once, to be able to "break;" early. |
| 249 |
|
| 250 |
// Initialize i18n support, load plugin's textdomain, to retrieve correct translations for the description of the preview. |
| 251 |
load_plugin_textdomain( 'tablepress', false, dirname( TABLEPRESS_BASENAME ) . '/i18n' ); |
| 252 |
|
| 253 |
if ( $success ) { |
| 254 |
// Create a render class instance. |
| 255 |
$_render = TablePress::load_class( 'TablePress_Render', 'class-render.php', 'classes' ); |
| 256 |
// Merge desired options with default render options (see TablePress_Controller_Frontend::shortcode_table()). |
| 257 |
$default_render_options = $_render->get_default_render_options(); |
| 258 |
/** This filter is documented in controllers/controller-frontend.php */ |
| 259 |
$default_render_options = apply_filters( 'tablepress_shortcode_table_default_shortcode_atts', $default_render_options ); |
| 260 |
$render_options = shortcode_atts( $default_render_options, $table['options'] ); |
| 261 |
/** This filter is documented in controllers/controller-frontend.php */ |
| 262 |
$render_options = apply_filters( 'tablepress_shortcode_table_shortcode_atts', $render_options ); |
| 263 |
$_render->set_input( $table, $render_options ); |
| 264 |
$head_html = $_render->get_preview_css(); |
| 265 |
$custom_css = TablePress::$model_options->get( 'custom_css' ); |
| 266 |
if ( ! empty( $custom_css ) ) { |
| 267 |
$head_html .= "<style type=\"text/css\">\n{$custom_css}\n</style>\n"; |
| 268 |
} |
| 269 |
|
| 270 |
$body_html = '<div id="tablepress-page"><p>' |
| 271 |
. __( 'This is a preview of your table.', 'tablepress' ) . ' ' |
| 272 |
. __( 'Because of CSS styling in your theme, the table might look different on your page!', 'tablepress' ) . ' ' |
| 273 |
. __( 'The features of the DataTables JavaScript library are also not available or visible in this preview!', 'tablepress' ) . '<br />' |
| 274 |
. sprintf( __( 'To insert the table into a page, post, or text widget, copy the Shortcode %s and paste it into the editor.', 'tablepress' ), '<input type="text" class="table-shortcode table-shortcode-inline" value="' . esc_attr( '[' . TablePress::$shortcode . " id={$table['id']} /]" ) . '" readonly="readonly" />' ) |
| 275 |
. '</p>' . $_render->get_output() . '</div>'; |
| 276 |
} else { |
| 277 |
$head_html = ''; |
| 278 |
$body_html = __( 'The preview could not be loaded.', 'tablepress' ); |
| 279 |
} |
| 280 |
|
| 281 |
// Generate the response. |
| 282 |
$response = array( |
| 283 |
'success' => $success, |
| 284 |
'head_html' => $head_html, |
| 285 |
'body_html' => $body_html, |
| 286 |
); |
| 287 |
// Buffer all outputs, to prevent errors/warnings being printed that make the JSON invalid. |
| 288 |
$output_buffer = ob_get_clean(); |
| 289 |
if ( ! empty( $output_buffer ) ) { |
| 290 |
$response['output_buffer'] = $output_buffer; |
| 291 |
} |
| 292 |
|
| 293 |
// Send the response. |
| 294 |
wp_send_json( $response ); |
| 295 |
} |
| 296 |
|
| 297 |
/** |
| 298 |
* Retrieve all information of a WP_Error object as a string. |
| 299 |
* |
| 300 |
* @since 1.4.0 |
| 301 |
* |
| 302 |
* @param WP_Error $wp_error A WP_Error object. |
| 303 |
* @return string All error codes, messages, and data of the WP_Error. |
| 304 |
*/ |
| 305 |
protected function get_wp_error_string( $wp_error ) { |
| 306 |
$error_strings = array(); |
| 307 |
$error_codes = $wp_error->get_error_codes(); |
| 308 |
// Reverse order to get latest errors first. |
| 309 |
$error_codes = array_reverse( $error_codes ); |
| 310 |
foreach ( $error_codes as $error_code ) { |
| 311 |
$error_strings[ $error_code ] = $error_code; |
| 312 |
$error_messages = $wp_error->get_error_messages( $error_code ); |
| 313 |
$error_messages = implode( ', ', $error_messages ); |
| 314 |
if ( ! empty( $error_messages ) ) { |
| 315 |
$error_strings[ $error_code ] .= " ({$error_messages})"; |
| 316 |
} |
| 317 |
$error_data = $wp_error->get_error_data( $error_code ); |
| 318 |
if ( ! is_null( $error_data ) ) { |
| 319 |
$error_strings[ $error_code ] .= " [{$error_data}]"; |
| 320 |
} |
| 321 |
} |
| 322 |
return implode( ";\n", $error_strings ); |
| 323 |
} |
| 324 |
|
| 325 |
} // class TablePress_Admin_AJAX_Controller |
| 326 |
|
