| 1 |
<?php |
| 2 |
|
| 3 |
namespace Kubio; |
| 4 |
|
| 5 |
use IlluminateAgnostic\Arr\Support\Arr; |
| 6 |
use Kubio\Core\StyleManager\Utils as StyleManagerUtils; |
| 7 |
use Kubio\Core\Registry; |
| 8 |
use Kubio\Core\Utils; |
| 9 |
|
| 10 |
class GoogleFontsLocalLoader { |
| 11 |
|
| 12 |
private static $instance = null; |
| 13 |
|
| 14 |
private $queries_transient = 'kubio_local_google_queries_transient'; |
| 15 |
private $font_file_action = 'kubio_get_google_font_file'; |
| 16 |
private $fonts_css_action = 'kubio_get_google_font_css'; |
| 17 |
|
| 18 |
private $uploads_dir = 'kubio-google-fonts-cache'; |
| 19 |
|
| 20 |
private $google_css_url = 'https://fonts.googleapis.com/css'; |
| 21 |
private $google_font_url = 'https://fonts.gstatic.com/s'; |
| 22 |
private $user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:97.0) Gecko/20100101 Firefox/97.0'; |
| 23 |
|
| 24 |
private $local_fonts_dir; |
| 25 |
private $local_fonts_url; |
| 26 |
|
| 27 |
|
| 28 |
/** |
| 29 |
* |
| 30 |
* @return GoogleFontsLocalLoader |
| 31 |
*/ |
| 32 |
public static function getInstance() { |
| 33 |
if ( ! static::$instance ) { |
| 34 |
static::$instance = new static(); |
| 35 |
} |
| 36 |
|
| 37 |
return static::$instance; |
| 38 |
} |
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|
| 40 |
public function __construct() { |
| 41 |
|
| 42 |
$upload_dir = wp_upload_dir(); |
| 43 |
$upload_path = untrailingslashit( $upload_dir['basedir'] ); |
| 44 |
|
| 45 |
$this->local_fonts_dir = "{$upload_path}/{$this->uploads_dir}"; |
| 46 |
$this->local_fonts_url = "{$upload_dir['baseurl']}/{$this->uploads_dir}"; |
| 47 |
|
| 48 |
if ( ! file_exists( $this->local_fonts_dir ) ) { |
| 49 |
mkdir( $this->local_fonts_dir, 0777, true ); |
| 50 |
} |
| 51 |
} |
| 52 |
|
| 53 |
|
| 54 |
public function resolveFontsCSS() { |
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$action = Arr::get( $_REQUEST, 'action' ); |
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|
| 57 |
if ( $action !== $this->fonts_css_action ) { |
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return; |
| 59 |
} |
| 60 |
|
| 61 |
header( 'Content-type: text/css' ); |
| 62 |
header( 'Cache-control: public' ); |
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|
| 64 |
$key = sanitize_key( Arr::get( $_REQUEST, 'key', '' ) ); |
| 65 |
$cached = $this->getCachedDataByKey( $key ); |
| 66 |
|
| 67 |
if ( ! $cached ) { |
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die( '' ); |
| 69 |
} |
| 70 |
|
| 71 |
$query = Arr::get( $cached, 'query' ); |
| 72 |
$css = Arr::get( $cached, 'css' ); |
| 73 |
|
| 74 |
if ( ! $css ) { |
| 75 |
$css = $this->getCSS( $query ); |
| 76 |
$this->cacheQueryCSS( $query, $css ); |
| 77 |
} |
| 78 |
|
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$css = $this->replacePlaceholdersWithLocalCSS( $css ); |
| 80 |
|
| 81 |
if ( Utils::isDebug() ) { |
| 82 |
$css = "/* {$this->google_css_url}?family={$query} */\n\n{$css}"; |
| 83 |
} |
| 84 |
|
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die( $css ); |
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|
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} |
| 88 |
|
| 89 |
private function getCSS( $query, $replace_urls = true ) { |
| 90 |
$fonts_url = add_query_arg( |
| 91 |
array( |
| 92 |
'family' => urlencode( $query ), |
| 93 |
'display' => 'swap', |
| 94 |
), |
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$this->google_css_url |
| 96 |
); |
| 97 |
|
| 98 |
$response = wp_remote_get( |
| 99 |
$fonts_url, |
| 100 |
array( |
| 101 |
'user-agent' => $this->user_agent, |
| 102 |
) |
| 103 |
); |
| 104 |
|
| 105 |
if ( is_wp_error( $response ) ) { |
| 106 |
return null; |
| 107 |
} |
| 108 |
|
| 109 |
if ( wp_remote_retrieve_response_code( $response ) !== 200 ) { |
| 110 |
return null; |
| 111 |
} |
| 112 |
|
| 113 |
$css = wp_remote_retrieve_body( $response ); |
| 114 |
|
| 115 |
if ( $replace_urls ) { |
| 116 |
$css = $this->replaceGoogleURLS( $css ); |
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} |
| 118 |
|
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return $css; |
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} |
| 121 |
|
| 122 |
private function replaceGoogleURLS( $css ) { |
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|
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$google_font_url = $this->google_font_url; |
| 125 |
$css = preg_replace_callback( |
| 126 |
'#url\((.*?)\)#', |
| 127 |
function( $matches ) use ( $google_font_url ) { |
| 128 |
$url = str_replace( $google_font_url, '', Arr::get( $matches, 1, '' ) ); |
| 129 |
|
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return "url({{{{$url}}}})"; |
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}, |
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$css |
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); |
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|
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return $css; |
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} |
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|
| 138 |
public function getLocalFontFilePath( $font_file ) { |
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$file_key = md5( $font_file ); |
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return "{$this->local_fonts_dir}/{$file_key}.woff2"; |
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} |
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|
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public function getLocalFontFileURL( $font_file ) { |
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$file_key = md5( $font_file ); |
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return "{$this->local_fonts_url}/{$file_key}.woff2"; |
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} |
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|
| 148 |
public function saveFontContentToLocalFile( $font_file, $content ) { |
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$path = $this->getLocalFontFilePath( $font_file ); |
| 150 |
return file_put_contents( $path, $content ); |
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} |
| 152 |
|
| 153 |
public function localFontFileExists( $font_file ) { |
| 154 |
return file_exists( $this->getLocalFontFilePath( $font_file ) ); |
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} |
| 156 |
|
| 157 |
private function replacePlaceholdersWithLocalCSS( $css ) { |
| 158 |
$self = $this; |
| 159 |
$action = $this->font_file_action; |
| 160 |
|
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$css = preg_replace_callback( |
| 162 |
'#url\(\{\{\{(.*?)\}\}\}\)#', |
| 163 |
function( $matches ) use ( $self, $action ) { |
| 164 |
$font_file = Arr::get( $matches, 1, '' ); |
| 165 |
|
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if ( $self->localFontFileExists( $font_file ) ) { |
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|
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$url = $self->getLocalFontFileURL( $font_file ); |
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} else { |
| 170 |
$url = add_query_arg( |
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array( |
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'font' => urlencode( $font_file ), |
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'action' => $action, |
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'security' => $self->createSecurityKey( "{$action}_{$font_file}" ), |
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), |
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admin_url( 'admin-ajax.php' ) |
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); |
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} |
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|
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return "url(${url})"; |
| 181 |
}, |
| 182 |
$css |
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); |
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|
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return $css; |
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|
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} |
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|
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public function getCachedDataByKey( $key ) { |
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$transient = get_transient( $this->queries_transient ); |
| 191 |
if ( ! is_array( $transient ) ) { |
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return null; |
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} |
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return Arr::get( $transient, $key ); |
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} |
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|
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public function getCachedQueryData( $query ) { |
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return $this->getCachedDataByKey( md5( $query ) ); |
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} |
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|
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public function cacheQueryCSS( $query, $css ) { |
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|
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$transient = get_transient( $this->queries_transient ); |
| 204 |
if ( ! is_array( $transient ) ) { |
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$transient = array(); |
| 206 |
} |
| 207 |
|
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Arr::set( |
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$transient, |
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md5( $query ), |
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array( |
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'query' => $query, |
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'css' => $css, |
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) |
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); |
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|
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set_transient( $this->queries_transient, $transient ); |
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} |
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|
| 220 |
public function addQueryToCache( $query ) { |
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$transient = get_transient( $this->queries_transient ); |
| 222 |
if ( ! is_array( $transient ) ) { |
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$transient = array(); |
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} |
| 225 |
|
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$key = md5( $query ); |
| 227 |
|
| 228 |
if ( isset( $transient[ $key ] ) ) { |
| 229 |
return; |
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} |
| 231 |
|
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Arr::set( |
| 233 |
$transient, |
| 234 |
$key, |
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array( |
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'query' => $query, |
| 237 |
) |
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); |
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set_transient( $this->queries_transient, $transient ); |
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} |
| 241 |
|
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|
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public function enqueueFonts( $query ) { |
| 244 |
$cached = $this->getCachedQueryData( $query ); |
| 245 |
if ( ! $cached ) { |
| 246 |
$this->addQueryToCache( |
| 247 |
$query, |
| 248 |
array( |
| 249 |
'query' => $query, |
| 250 |
) |
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); |
| 252 |
} |
| 253 |
|
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wp_enqueue_style( |
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'kubio-local-google-fonts', |
| 256 |
add_query_arg( |
| 257 |
array( |
| 258 |
'action' => $this->fonts_css_action, |
| 259 |
'key' => md5( $query ), |
| 260 |
), |
| 261 |
site_url() |
| 262 |
) |
| 263 |
); |
| 264 |
} |
| 265 |
|
| 266 |
public function getFontsQuery( $withGeneralSettings = true ) { |
| 267 |
|
| 268 |
$fonts = array(); |
| 269 |
|
| 270 |
if ( $withGeneralSettings ) { |
| 271 |
// get global google fonts |
| 272 |
$fonts = \kubio_get_global_data( 'fonts.google', array() ); |
| 273 |
} |
| 274 |
|
| 275 |
// add current rendered fonts variants |
| 276 |
$rendered_fonts = Registry::getInstance()->getRenderedFonts(); |
| 277 |
foreach ( $rendered_fonts as $family => $variants ) { |
| 278 |
$fonts[] = array( |
| 279 |
'family' => $family, |
| 280 |
'variants' => $variants, |
| 281 |
); |
| 282 |
} |
| 283 |
|
| 284 |
$fonts = apply_filters( 'kubio/google_fonts', $fonts ); |
| 285 |
|
| 286 |
if ( ! count( $fonts ) ) { |
| 287 |
return null; |
| 288 |
} |
| 289 |
|
| 290 |
// merge fonts by family |
| 291 |
$mapped_fonts = array(); |
| 292 |
foreach ( $fonts as $font_data ) { |
| 293 |
$family = $font_data['family']; |
| 294 |
$mapped_fonts[ $family ] = isset( $mapped_fonts[ $family ] ) ? $mapped_fonts[ $family ] : array(); |
| 295 |
$mapped_fonts[ $family ] = array_merge( $mapped_fonts[ $family ], $font_data['variants'] ); |
| 296 |
|
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} |
| 298 |
|
| 299 |
// build fonts query |
| 300 |
$groups = array(); |
| 301 |
foreach ( $mapped_fonts as $family => $weights ) { |
| 302 |
|
| 303 |
// add the default if necessary 400 and normailize weights array - ensure proper caching by sorting the weights and removing duplicates |
| 304 |
$groups[] = $family . ':' . implode( ',', StyleManagerUtils::normalizeFontWeights( $weights ) ); |
| 305 |
} |
| 306 |
$fonts_query = implode( '|', $groups ); |
| 307 |
|
| 308 |
return $fonts_query; |
| 309 |
} |
| 310 |
|
| 311 |
public function getFontsMap( $query, $subset = 'latin' ) { |
| 312 |
|
| 313 |
$css = $this->getCSS( $query, false ); |
| 314 |
|
| 315 |
if ( $subset === 'all' ) { |
| 316 |
$subset_regex = '/\/\*([^*\/]*)\*\//i'; |
| 317 |
preg_match_all( $subset_regex, $css, $matches, PREG_SET_ORDER ); |
| 318 |
$subsets_list = array(); |
| 319 |
foreach ( $matches as $match ) { |
| 320 |
$current_subset = trim( $match[1] ); |
| 321 |
if ( ! in_array( $current_subset, $subsets_list ) ) { |
| 322 |
$subsets_list[] = $current_subset; |
| 323 |
} |
| 324 |
} |
| 325 |
$all_fonts = array(); |
| 326 |
foreach ( $subsets_list as $subset_item ) { |
| 327 |
$fonts = $this->getFontsMap( $query, $subset_item ); |
| 328 |
$all_fonts = array_merge( $all_fonts, $fonts ); |
| 329 |
} |
| 330 |
|
| 331 |
//sorts fonts faces |
| 332 |
usort( |
| 333 |
$all_fonts, |
| 334 |
function( $a, $b ) { |
| 335 |
return array( $a['font-family'], $a['font-style'], $a['font-weight'], $a['subset'] ) |
| 336 |
<=> |
| 337 |
array( $b['font-family'], $b['font-style'], $b['font-weight'], $b['subset'] ); |
| 338 |
} |
| 339 |
); |
| 340 |
return $all_fonts; |
| 341 |
} |
| 342 |
|
| 343 |
// prepare subset |
| 344 |
$css = preg_replace( '#/\*\s+?(' . $subset . ")\s+?\*/(.*\n?)@font-face#", 'is_subset_match', $css ); |
| 345 |
|
| 346 |
// remove comments |
| 347 |
$css = preg_replace( '#/\*(.*?)\*/#', '', $css ); |
| 348 |
$css = preg_replace( '#format\((.*?)\)#', '', $css ); |
| 349 |
$css = preg_replace( '#url\(https://(.*?)\)#', '$1', $css ); |
| 350 |
|
| 351 |
$re = '/is_subset_match.*{\K[^}]*(?=})/'; |
| 352 |
preg_match_all( $re, $css, $matches, PREG_SET_ORDER ); |
| 353 |
|
| 354 |
$parsed = array(); |
| 355 |
$keys = array( 'font-family', 'src', 'font-style', 'font-weight', 'unicode-range' ); |
| 356 |
if ( $matches ) { |
| 357 |
|
| 358 |
foreach ( $matches as $k => $ff ) { |
| 359 |
|
| 360 |
$css = $ff[0]; |
| 361 |
$attrs = explode( ';', $css ); |
| 362 |
|
| 363 |
$props = array(); |
| 364 |
foreach ( $attrs as $attr ) { |
| 365 |
if ( strlen( trim( $attr ) ) > 0 ) { |
| 366 |
$pair = explode( ':', trim( $attr ) ); |
| 367 |
if ( in_array( $pair[0], $keys ) ) { |
| 368 |
$value = trim( $pair[1] ); |
| 369 |
|
| 370 |
if ( $pair[0] === 'font-family' ) { |
| 371 |
$value = str_replace( "'", '', $value ); |
| 372 |
} |
| 373 |
|
| 374 |
if ( $pair[0] === 'font-weight' ) { |
| 375 |
$value = intval( $value ); |
| 376 |
} |
| 377 |
|
| 378 |
if ( $pair[0] === 'src' ) { |
| 379 |
$value = "https://{$value}"; |
| 380 |
} |
| 381 |
|
| 382 |
$props[ trim( $pair[0] ) ] = $value; |
| 383 |
} |
| 384 |
} |
| 385 |
} |
| 386 |
$props['subset'] = $subset; |
| 387 |
$parsed[ $k ] = $props; |
| 388 |
} |
| 389 |
} |
| 390 |
|
| 391 |
return $parsed; |
| 392 |
} |
| 393 |
|
| 394 |
public function resolveFont() { |
| 395 |
|
| 396 |
$font_file = sanitize_text_field( Arr::get( $_REQUEST, 'font', '' ) ); |
| 397 |
$security_key = sanitize_text_field( Arr::get( $_REQUEST, 'security', '' ) ); |
| 398 |
|
| 399 |
$valid_nonce = $this->verifySecurityKey( $security_key, "{$this->font_file_action}_{$font_file}" ); |
| 400 |
|
| 401 |
if ( ! $valid_nonce ) { |
| 402 |
wp_die( __( 'Frobidden', 'kubio' ), 403 ); |
| 403 |
} |
| 404 |
|
| 405 |
$content = $this->resolveFontFileContent( $font_file ); |
| 406 |
|
| 407 |
if ( is_wp_error( $content ) ) { |
| 408 |
wp_die( $content, 404 ); |
| 409 |
} |
| 410 |
|
| 411 |
$this_year = strtotime( date( 'Y' ) . '-01-01' ); |
| 412 |
header( 'Content-type: font/woff2' ); |
| 413 |
header( 'Cache-control: public' ); |
| 414 |
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $this_year ) . ' GMT' ); |
| 415 |
header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', $this_year + YEAR_IN_SECONDS ) . ' GMT' ); |
| 416 |
header( 'Etag: ' . md5( base64_encode( $content ) ) ); |
| 417 |
|
| 418 |
die( $content ); |
| 419 |
} |
| 420 |
|
| 421 |
private function resolveFontFileContent( $font_file ) { |
| 422 |
if ( $this->localFontFileExists( $font_file ) ) { |
| 423 |
return file_get_contents( $this->getLocalFontFilePath( $font_file ) ); |
| 424 |
} |
| 425 |
|
| 426 |
if ( ! is_writable( $this->local_fonts_dir ) ) { |
| 427 |
return new \WP_Error( 'folder_not_writable' ); |
| 428 |
} |
| 429 |
|
| 430 |
$google_font_url = "{$this->google_font_url}/{$font_file}"; |
| 431 |
|
| 432 |
$reponse = wp_remote_get( $google_font_url ); |
| 433 |
if ( is_wp_error( $reponse ) ) { |
| 434 |
return new \WP_Error( 'could_not_retrieve_url' ); |
| 435 |
} |
| 436 |
|
| 437 |
$content = wp_remote_retrieve_body( $reponse ); |
| 438 |
|
| 439 |
$this->saveFontContentToLocalFile( $font_file, $content ); |
| 440 |
|
| 441 |
return $content; |
| 442 |
|
| 443 |
} |
| 444 |
|
| 445 |
private function getSecuritySalt() { |
| 446 |
if ( defined( 'NONCE_KEY' ) ) { |
| 447 |
return NONCE_KEY; |
| 448 |
} |
| 449 |
|
| 450 |
if ( define( 'SECURE_AUTH_KEY' ) ) { |
| 451 |
return SECURE_AUTH_KEY; |
| 452 |
} |
| 453 |
|
| 454 |
if ( define( 'AUTH_KEY' ) ) { |
| 455 |
return AUTH_KEY; |
| 456 |
} |
| 457 |
|
| 458 |
if ( define( 'SECURE_AUTH_SALT' ) ) { |
| 459 |
return SECURE_AUTH_SALT; |
| 460 |
} |
| 461 |
|
| 462 |
if ( define( 'AUTH_SALT' ) ) { |
| 463 |
return AUTH_SALT; |
| 464 |
} |
| 465 |
|
| 466 |
$pro_activation_time = Flags::get( 'kubio_pro_activation_time' ); |
| 467 |
|
| 468 |
if ( $pro_activation_time ) { |
| 469 |
return $pro_activation_time; |
| 470 |
} |
| 471 |
|
| 472 |
$activation_time = Flags::get( 'kubio_activation_time' ); |
| 473 |
|
| 474 |
if ( $activation_time ) { |
| 475 |
return $activation_time; |
| 476 |
} |
| 477 |
|
| 478 |
return uniqid( time() ); |
| 479 |
} |
| 480 |
|
| 481 |
public function createSecurityKey( $action ) { |
| 482 |
return wp_hash( $this->getSecuritySalt() . '|' . $action ); |
| 483 |
} |
| 484 |
|
| 485 |
public function verifySecurityKey( $nonce, $action ) { |
| 486 |
return $nonce === $this->createSecurityKey( $action ); |
| 487 |
} |
| 488 |
|
| 489 |
|
| 490 |
public function addAdminAjaxActions() { |
| 491 |
add_action( "wp_ajax_{$this->font_file_action}", array( $this, 'resolveFont' ) ); |
| 492 |
add_action( "wp_ajax_nopriv_{$this->font_file_action}", array( $this, 'resolveFont' ) ); |
| 493 |
|
| 494 |
add_action( 'plugins_loaded', array( $this, 'resolveFontsCSS' ) ); |
| 495 |
|
| 496 |
} |
| 497 |
|
| 498 |
public static function enqueuLocalGoogleFonts( $fonts_query ) { |
| 499 |
return GoogleFontsLocalLoader::getInstance()->enqueueFonts( $fonts_query ); |
| 500 |
} |
| 501 |
|
| 502 |
|
| 503 |
public static function registerFontResolver() { |
| 504 |
return GoogleFontsLocalLoader::getInstance()->addAdminAjaxActions(); |
| 505 |
} |
| 506 |
|
| 507 |
} |
| 508 |
|
