| 1 |
<?php |
| 2 |
|
| 3 |
// If this file is called directly, abort. |
| 4 |
if ( ! defined( 'WPINC' ) ) { |
| 5 |
die; |
| 6 |
} |
| 7 |
|
| 8 |
|
| 9 |
/** |
| 10 |
* Redirect page if is called wiht an untranslate slug to the translated URL |
| 11 |
* |
| 12 |
* @return void |
| 13 |
*/ |
| 14 |
function wplng_redirect_translated_slug() { |
| 15 |
|
| 16 |
if ( is_404() ) { |
| 17 |
return; |
| 18 |
} |
| 19 |
|
| 20 |
$language_website_id = wplng_get_language_website_id(); |
| 21 |
$language_current_id = wplng_get_language_current_id(); |
| 22 |
|
| 23 |
if ( $language_website_id === $language_current_id ) { |
| 24 |
return; |
| 25 |
} |
| 26 |
|
| 27 |
if ( empty( $_COOKIE['wplingua'] ) |
| 28 |
&& apply_filters( 'wplng_cookie_check', true ) |
| 29 |
) { |
| 30 |
// Set HTTP no-cache header |
| 31 |
nocache_headers(); |
| 32 |
|
| 33 |
// Disable cache for plugins |
| 34 |
if ( ! defined( 'DONOTCACHEPAGE' ) ) { |
| 35 |
define( 'DONOTCACHEPAGE', true ); |
| 36 |
} |
| 37 |
} |
| 38 |
|
| 39 |
$url_current = wplng_get_url_current(); |
| 40 |
|
| 41 |
if ( ! is_string( $url_current ) |
| 42 |
|| '' === $url_current |
| 43 |
|| '/' === $url_current |
| 44 |
) { |
| 45 |
return; |
| 46 |
} |
| 47 |
|
| 48 |
$url_translated = wplng_get_url_current_for_language( |
| 49 |
$language_current_id |
| 50 |
); |
| 51 |
|
| 52 |
if ( $url_current === $url_translated ) { |
| 53 |
return; |
| 54 |
} |
| 55 |
|
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wp_safe_redirect( |
| 57 |
wp_make_link_relative( |
| 58 |
$url_translated |
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) |
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); |
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|
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exit; |
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} |
| 64 |
|
| 65 |
|
| 66 |
/** |
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* wpLingua output buffering starting function |
| 68 |
* |
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* @return void |
| 70 |
*/ |
| 71 |
function wplng_ob_start() { |
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|
| 73 |
if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) { |
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|
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/** |
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* Is an AJAX call |
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*/ |
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|
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if ( empty( $_SERVER['HTTP_REFERER'] ) |
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|| ! is_string( $_SERVER['HTTP_REFERER'] ) |
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) { |
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return; |
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} |
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|
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$referer = sanitize_url( $_SERVER['HTTP_REFERER'] ); |
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|
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// Check if the referer is clean |
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if ( strtolower( esc_url_raw( $referer ) ) !== strtolower( $referer ) ) { |
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return; |
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} |
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|
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// Check AJAX action |
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if ( ! empty( $_POST['action'] ) |
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&& in_array( $_POST['action'], wplng_data_excluded_ajax_action() ) |
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) { |
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return; |
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} |
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|
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global $wplng_request_uri; |
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$wplng_request_uri = wp_make_link_relative( $referer ); |
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|
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if ( ! wplng_url_is_translatable( $wplng_request_uri ) |
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|| wplng_get_language_website_id() === wplng_get_language_current_id() |
| 104 |
) { |
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return; |
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} |
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|
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ob_start( 'wplng_ob_callback_ajax' ); |
| 109 |
|
| 110 |
} elseif ( wp_is_json_request() ) { |
| 111 |
|
| 112 |
/** |
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* Is a REST API call |
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*/ |
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|
| 116 |
if ( empty( $_SERVER['HTTP_REFERER'] ) ) { |
| 117 |
return; |
| 118 |
} |
| 119 |
|
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$referer = sanitize_url( $_SERVER['HTTP_REFERER'] ); |
| 121 |
|
| 122 |
// Check if the referer is clean |
| 123 |
if ( strtolower( esc_url_raw( $referer ) ) !== strtolower( $referer ) ) { |
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return; |
| 125 |
} |
| 126 |
|
| 127 |
global $wplng_request_uri; |
| 128 |
$wplng_request_uri = wp_make_link_relative( $referer ); |
| 129 |
|
| 130 |
if ( ! wplng_url_is_translatable( $wplng_request_uri ) |
| 131 |
|| wplng_get_language_website_id() === wplng_get_language_current_id() |
| 132 |
) { |
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return; |
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} |
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|
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ob_start( 'wplng_ob_callback_wp_json' ); |
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|
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} elseif ( wplng_url_is_sitemap_xml() ) { |
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|
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/** |
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* Is an XML sitemap |
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*/ |
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|
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ob_start( 'wplng_ob_callback_sitemap_xml' ); |
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|
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} else { |
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|
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/** |
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* Is a front call |
| 150 |
*/ |
| 151 |
|
| 152 |
if ( wplng_get_language_website_id() === wplng_get_language_current_id() ) { |
| 153 |
return; |
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} |
| 155 |
|
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global $wplng_request_uri; |
| 157 |
$current_path = $wplng_request_uri; |
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|
| 159 |
if ( ! is_string( $current_path ) ) { |
| 160 |
return; |
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} |
| 162 |
|
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$origin_path = wplng_get_url_original( $current_path ); |
| 164 |
|
| 165 |
if ( ! wplng_url_is_translatable( $origin_path ) ) { |
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wp_safe_redirect( $origin_path ); |
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exit; |
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} |
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|
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$_SERVER['REQUEST_URI'] = $origin_path; |
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|
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ob_start( 'wplng_ob_callback_page' ); |
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} |
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} |
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|
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|
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/** |
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* wpLingua OB Callback function : AJAX call |
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* |
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* @param string $output |
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* @return string |
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*/ |
| 183 |
function wplng_ob_callback_ajax( $output ) { |
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|
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global $wplng_request_uri; |
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|
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if ( wplng_str_is_json( $output ) ) { |
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|
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$output_translated = wplng_translate_json( $output ); |
| 190 |
|
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} elseif ( wplng_str_is_html( $output ) ) { |
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|
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$output_translated = wplng_translate_html( $output ); |
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|
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} else { |
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|
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$output_translated = $output; |
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|
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} |
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|
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// Print debug data in debug.log file |
| 202 |
if ( true === WPLNG_DEBUG_AJAX ) { |
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|
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$action = 'UNKNOW'; |
| 205 |
if ( ! empty( $_POST['action'] ) && is_string( $_POST['action'] ) ) { |
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$action = $_POST['action']; |
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} |
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|
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$debug = array( |
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'title' => 'wpLingua AJAX debug', |
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'action' => $action, |
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'request_uri' => $wplng_request_uri, |
| 213 |
'value' => $output, |
| 214 |
'translated' => $output_translated, |
| 215 |
); |
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|
| 217 |
error_log( |
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var_export( |
| 219 |
$debug, |
| 220 |
true |
| 221 |
) |
| 222 |
); |
| 223 |
} |
| 224 |
|
| 225 |
return $output_translated; |
| 226 |
} |
| 227 |
|
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|
| 229 |
/** |
| 230 |
* Callback function for output buffering to process and modify sitemap XML content. |
| 231 |
* |
| 232 |
* @param string $content The original XML content. |
| 233 |
* @return string The modified XML content with added <xhtml:link> tags or the original content if no changes are made. |
| 234 |
*/ |
| 235 |
function wplng_ob_callback_sitemap_xml( $content ) { |
| 236 |
|
| 237 |
// Return the content as is if it's empty or not valid XML. |
| 238 |
if ( ! get_option( 'wplng_sitemap_xml', true ) |
| 239 |
|| empty( $content ) |
| 240 |
|| ! wplng_str_is_xml( $content ) |
| 241 |
) { |
| 242 |
return $content; |
| 243 |
} |
| 244 |
|
| 245 |
// Check if multilingual XML sitemap is enabled. |
| 246 |
$sitemap_xml_enabled = apply_filters( |
| 247 |
'wplng_enable_sitemap_xml_feature', |
| 248 |
get_option( 'wplng_sitemap_xml', true ) |
| 249 |
); |
| 250 |
|
| 251 |
if ( empty( $sitemap_xml_enabled ) ) { |
| 252 |
return $content; |
| 253 |
} |
| 254 |
|
| 255 |
// Get language data. |
| 256 |
$language_website_id = wplng_get_language_website_id(); |
| 257 |
$languages_target_ids = wplng_get_languages_target_ids(); |
| 258 |
|
| 259 |
if ( empty( $language_website_id ) || empty( $languages_target_ids ) ) { |
| 260 |
return $content; |
| 261 |
} |
| 262 |
|
| 263 |
// Load the XML content into a DOMDocument. |
| 264 |
$dom = new DOMDocument( '1.0', 'UTF-8' ); |
| 265 |
$dom->preserveWhiteSpace = false; |
| 266 |
$dom->formatOutput = true; |
| 267 |
|
| 268 |
// Enable internal error handling |
| 269 |
$previous_libxml_setting = libxml_use_internal_errors( true ); |
| 270 |
|
| 271 |
// Check XML errors |
| 272 |
if ( ! $dom->loadXML( $content ) ) { |
| 273 |
if ( defined( 'WPLNG_DEBUG_XML' ) && true === WPLNG_DEBUG_XML ) { |
| 274 |
$errors = array(); |
| 275 |
|
| 276 |
foreach ( libxml_get_errors() as $error ) { |
| 277 |
$errors[] = $error->message; |
| 278 |
} |
| 279 |
|
| 280 |
libxml_clear_errors(); |
| 281 |
|
| 282 |
$debug = array( |
| 283 |
'title' => 'wpLingua XML debug - Invalid XML content', |
| 284 |
'errors' => $errors, |
| 285 |
); |
| 286 |
|
| 287 |
error_log( var_export( $debug, true ) ); |
| 288 |
} |
| 289 |
|
| 290 |
return $content; |
| 291 |
} |
| 292 |
|
| 293 |
// Restore previous setting |
| 294 |
libxml_use_internal_errors( $previous_libxml_setting ); |
| 295 |
|
| 296 |
$signature = '<!-- XML Sitemap is made multilingual by wpLingua -->' . PHP_EOL; |
| 297 |
|
| 298 |
// Register namespaces and prepare XPath. |
| 299 |
$xpath = new DOMXPath( $dom ); |
| 300 |
$xpath->registerNamespace( 'sm', 'http://www.sitemaps.org/schemas/sitemap/0.9' ); |
| 301 |
$xpath->registerNamespace( 'xhtml', 'http://www.w3.org/1999/xhtml' ); |
| 302 |
|
| 303 |
// Ensure the root element declares the required namespaces. |
| 304 |
$urlset = $dom->documentElement; |
| 305 |
if ( ! $urlset->hasAttribute( 'xmlns' ) ) { |
| 306 |
$urlset->setAttribute( 'xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9' ); |
| 307 |
} |
| 308 |
if ( ! $urlset->hasAttribute( 'xmlns:xhtml' ) ) { |
| 309 |
$urlset->setAttribute( 'xmlns:xhtml', 'http://www.w3.org/1999/xhtml' ); |
| 310 |
} |
| 311 |
|
| 312 |
// Get all <url> nodes. |
| 313 |
$url_nodes = $xpath->query( '//sm:url' ); |
| 314 |
|
| 315 |
if ( empty( $url_nodes ) ) { |
| 316 |
return $content . $signature; |
| 317 |
} |
| 318 |
|
| 319 |
foreach ( $url_nodes as $url_node ) { |
| 320 |
|
| 321 |
// Get original URL. |
| 322 |
$loc_node = $xpath->query( 'sm:loc', $url_node )->item( 0 ); |
| 323 |
|
| 324 |
if ( empty( $loc_node ) ) { |
| 325 |
continue; |
| 326 |
} |
| 327 |
|
| 328 |
$url_original = trim( $loc_node->nodeValue ); |
| 329 |
|
| 330 |
if ( '' === $url_original || ! wplng_url_is_translatable( $url_original ) ) { |
| 331 |
continue; |
| 332 |
} |
| 333 |
|
| 334 |
// Add link for original language. |
| 335 |
$link_node = $dom->createElement( 'xhtml:link' ); |
| 336 |
$link_node->setAttribute( 'rel', 'alternate' ); |
| 337 |
$link_node->setAttribute( 'hreflang', esc_attr( $language_website_id ) ); |
| 338 |
$link_node->setAttribute( 'href', esc_url( $url_original ) ); |
| 339 |
$url_node->appendChild( $link_node ); |
| 340 |
|
| 341 |
// Add links for target languages. |
| 342 |
foreach ( $languages_target_ids as $language_id ) { |
| 343 |
|
| 344 |
$translated_url = wplng_url_translate( |
| 345 |
$url_original, |
| 346 |
$language_id |
| 347 |
); |
| 348 |
|
| 349 |
// Validate the translated URL. |
| 350 |
if ( empty( $translated_url ) |
| 351 |
|| ! filter_var( $translated_url, FILTER_VALIDATE_URL ) |
| 352 |
) { |
| 353 |
continue; |
| 354 |
} |
| 355 |
|
| 356 |
$link_node = $dom->createElement( 'xhtml:link' ); |
| 357 |
$link_node->setAttribute( 'rel', 'alternate' ); |
| 358 |
$link_node->setAttribute( 'hreflang', esc_attr( $language_id ) ); |
| 359 |
$link_node->setAttribute( 'href', esc_url( $translated_url ) ); |
| 360 |
$url_node->appendChild( $link_node ); |
| 361 |
} |
| 362 |
} |
| 363 |
|
| 364 |
$sitemap = $dom->saveXML(); |
| 365 |
|
| 366 |
if ( empty( $sitemap ) ) { |
| 367 |
return $content; |
| 368 |
} |
| 369 |
|
| 370 |
return $sitemap . $signature; |
| 371 |
} |
| 372 |
|
| 373 |
|
| 374 |
/** |
| 375 |
* wpLingua OB Callback function : Translate pages |
| 376 |
* |
| 377 |
* @param string $html |
| 378 |
* @return string |
| 379 |
*/ |
| 380 |
function wplng_ob_callback_page( $content ) { |
| 381 |
|
| 382 |
if ( wplng_str_is_json( $content ) ) { |
| 383 |
|
| 384 |
$content = apply_filters( 'wplng_intercepted_json', $content ); |
| 385 |
$content = wplng_translate_json( $content ); |
| 386 |
$content = apply_filters( 'wplng_translated_json', $content ); |
| 387 |
|
| 388 |
} elseif ( wplng_str_is_html( $content ) ) { |
| 389 |
|
| 390 |
$args = array(); |
| 391 |
|
| 392 |
if ( current_user_can( 'edit_posts' ) ) { |
| 393 |
|
| 394 |
if ( ! empty( $_GET['wplng-mode'] ) ) { |
| 395 |
|
| 396 |
switch ( $_GET['wplng-mode'] ) { |
| 397 |
|
| 398 |
case 'editor': |
| 399 |
$args['mode'] = 'editor'; |
| 400 |
break; |
| 401 |
|
| 402 |
case 'list': |
| 403 |
$args['mode'] = 'list'; |
| 404 |
break; |
| 405 |
} |
| 406 |
} |
| 407 |
|
| 408 |
$load_in_progress_enabled = apply_filters( |
| 409 |
'wplng_enable_in_progress_feature', |
| 410 |
get_option( 'wplng_load_in_progress', false ) |
| 411 |
); |
| 412 |
|
| 413 |
if ( $load_in_progress_enabled ) { |
| 414 |
|
| 415 |
$args['load'] = 'enabled'; |
| 416 |
|
| 417 |
if ( ! empty( $_GET['wplng-load'] ) |
| 418 |
&& ( |
| 419 |
$_GET['wplng-load'] === 'loading' |
| 420 |
|| $_GET['wplng-load'] === 'progress' |
| 421 |
|| $_GET['wplng-load'] === 'disabled' |
| 422 |
) |
| 423 |
) { |
| 424 |
|
| 425 |
$args['load'] = $_GET['wplng-load']; |
| 426 |
|
| 427 |
wp_cache_flush(); |
| 428 |
} |
| 429 |
} |
| 430 |
} |
| 431 |
|
| 432 |
$content = apply_filters( 'wplng_intercepted_html', $content ); |
| 433 |
$content = wplng_translate_html( $content, $args ); |
| 434 |
$content = apply_filters( 'wplng_translated_html', $content ); |
| 435 |
|
| 436 |
} |
| 437 |
|
| 438 |
return $content; |
| 439 |
} |
| 440 |
|
| 441 |
|
| 442 |
/** |
| 443 |
* wpLingua OB Callback function : /wp-json/ |
| 444 |
* |
| 445 |
* @param string $output |
| 446 |
* @return string |
| 447 |
*/ |
| 448 |
function wplng_ob_callback_wp_json( $output ) { |
| 449 |
|
| 450 |
global $wplng_request_uri; |
| 451 |
|
| 452 |
if ( wplng_str_is_json( $output ) ) { |
| 453 |
$output_translated = wplng_translate_json( $output ); |
| 454 |
} else { |
| 455 |
$output_translated = $output; |
| 456 |
} |
| 457 |
|
| 458 |
// Print debug data in debug.log file |
| 459 |
if ( true === WPLNG_DEBUG_REST ) { |
| 460 |
|
| 461 |
$debug = array( |
| 462 |
'title' => 'wpLingua /wp-json/ debug', |
| 463 |
'request_uri' => $wplng_request_uri, |
| 464 |
'value' => $output, |
| 465 |
'translated' => $output_translated, |
| 466 |
); |
| 467 |
|
| 468 |
error_log( |
| 469 |
var_export( |
| 470 |
$debug, |
| 471 |
true |
| 472 |
) |
| 473 |
); |
| 474 |
} |
| 475 |
|
| 476 |
return $output_translated; |
| 477 |
} |
| 478 |
|
