css_js_min
8 months ago
guest.cls.php
8 months ago
html-min.cls.php
8 months ago
object-cache.php
8 months ago
php-compatibility.func.php
8 months ago
urirewriter.cls.php
8 months ago
urirewriter.cls.php
343 lines
| 1 | <?php |
| 2 | // phpcs:ignoreFile |
| 3 | /** |
| 4 | * Rewrite file-relative URIs as root-relative in CSS files |
| 5 | * |
| 6 | * @package Minify |
| 7 | * @author Stephen Clay <steve@mrclay.org> |
| 8 | */ |
| 9 | |
| 10 | namespace LiteSpeed\Lib; |
| 11 | |
| 12 | defined( 'WPINC' ) || exit; |
| 13 | |
| 14 | class UriRewriter { |
| 15 | |
| 16 | |
| 17 | /** |
| 18 | * rewrite() and rewriteRelative() append debugging information here |
| 19 | * |
| 20 | * @var string |
| 21 | */ |
| 22 | public static $debugText = ''; |
| 23 | |
| 24 | /** |
| 25 | * In CSS content, rewrite file relative URIs as root relative |
| 26 | * |
| 27 | * @param string $css |
| 28 | * |
| 29 | * @param string $currentDir The directory of the current CSS file. |
| 30 | * |
| 31 | * @param string $docRoot The document root of the web site in which |
| 32 | * the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']). |
| 33 | * |
| 34 | * @param array $symlinks (default = array()) If the CSS file is stored in |
| 35 | * a symlink-ed directory, provide an array of link paths to |
| 36 | * target paths, where the link paths are within the document root. Because |
| 37 | * paths need to be normalized for this to work, use "//" to substitute |
| 38 | * the doc root in the link paths (the array keys). E.g.: |
| 39 | * <code> |
| 40 | * array('//symlink' => '/real/target/path') // unix |
| 41 | * array('//static' => 'D:\\staticStorage') // Windows |
| 42 | * </code> |
| 43 | * |
| 44 | * @return string |
| 45 | */ |
| 46 | public static function rewrite( $css, $currentDir, $docRoot = null, $symlinks = array() ) { |
| 47 | self::$_docRoot = self::_realpath( |
| 48 | $docRoot ? $docRoot : $_SERVER['DOCUMENT_ROOT'] |
| 49 | ); |
| 50 | self::$_currentDir = self::_realpath( $currentDir ); |
| 51 | self::$_symlinks = array(); |
| 52 | |
| 53 | // normalize symlinks in order to map to link |
| 54 | foreach ( $symlinks as $link => $target ) { |
| 55 | $link = ( $link === '//' ) ? self::$_docRoot : str_replace( '//', self::$_docRoot . '/', $link ); |
| 56 | $link = strtr( $link, '/', DIRECTORY_SEPARATOR ); |
| 57 | |
| 58 | self::$_symlinks[ $link ] = self::_realpath( $target ); |
| 59 | } |
| 60 | |
| 61 | self::$debugText .= 'docRoot : ' . self::$_docRoot . "\n" |
| 62 | . 'currentDir : ' . self::$_currentDir . "\n"; |
| 63 | if ( self::$_symlinks ) { |
| 64 | self::$debugText .= 'symlinks : ' . var_export( self::$_symlinks, 1 ) . "\n"; |
| 65 | } |
| 66 | self::$debugText .= "\n"; |
| 67 | |
| 68 | $css = self::_trimUrls( $css ); |
| 69 | |
| 70 | $css = self::_owlifySvgPaths( $css ); |
| 71 | |
| 72 | // rewrite |
| 73 | $pattern = '/@import\\s+([\'"])(.*?)[\'"]/'; |
| 74 | $css = preg_replace_callback( $pattern, __CLASS__ . '::_processUriCB', $css ); |
| 75 | |
| 76 | $pattern = '/url\\(\\s*([\'"](.*?)[\'"]|[^\\)\\s]+)\\s*\\)/'; |
| 77 | $css = preg_replace_callback( $pattern, __CLASS__ . '::_processUriCB', $css ); |
| 78 | |
| 79 | $css = self::_unOwlify( $css ); |
| 80 | |
| 81 | return $css; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * In CSS content, prepend a path to relative URIs |
| 86 | * |
| 87 | * @param string $css |
| 88 | * |
| 89 | * @param string $path The path to prepend. |
| 90 | * |
| 91 | * @return string |
| 92 | */ |
| 93 | public static function prepend( $css, $path ) { |
| 94 | self::$_prependPath = $path; |
| 95 | |
| 96 | $css = self::_trimUrls( $css ); |
| 97 | |
| 98 | $css = self::_owlifySvgPaths( $css ); |
| 99 | |
| 100 | // append |
| 101 | $pattern = '/@import\\s+([\'"])(.*?)[\'"]/'; |
| 102 | $css = preg_replace_callback( $pattern, __CLASS__ . '::_processUriCB', $css ); |
| 103 | |
| 104 | $pattern = '/url\\(\\s*([\'"](.*?)[\'"]|[^\\)\\s]+)\\s*\\)/'; |
| 105 | $css = preg_replace_callback( $pattern, __CLASS__ . '::_processUriCB', $css ); |
| 106 | |
| 107 | $css = self::_unOwlify( $css ); |
| 108 | |
| 109 | self::$_prependPath = null; |
| 110 | |
| 111 | return $css; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Get a root relative URI from a file relative URI |
| 116 | * |
| 117 | * <code> |
| 118 | * UriRewriter::rewriteRelative( |
| 119 | * '../img/hello.gif' |
| 120 | * , '/home/user/www/css' // path of CSS file |
| 121 | * , '/home/user/www' // doc root |
| 122 | * ); |
| 123 | * // returns '/img/hello.gif' |
| 124 | * |
| 125 | * // example where static files are stored in a symlinked directory |
| 126 | * UriRewriter::rewriteRelative( |
| 127 | * 'hello.gif' |
| 128 | * , '/var/staticFiles/theme' |
| 129 | * , '/home/user/www' |
| 130 | * , array('/home/user/www/static' => '/var/staticFiles') |
| 131 | * ); |
| 132 | * // returns '/static/theme/hello.gif' |
| 133 | * </code> |
| 134 | * |
| 135 | * @param string $uri file relative URI |
| 136 | * |
| 137 | * @param string $realCurrentDir realpath of the current file's directory. |
| 138 | * |
| 139 | * @param string $realDocRoot realpath of the site document root. |
| 140 | * |
| 141 | * @param array $symlinks (default = array()) If the file is stored in |
| 142 | * a symlink-ed directory, provide an array of link paths to |
| 143 | * real target paths, where the link paths "appear" to be within the document |
| 144 | * root. E.g.: |
| 145 | * <code> |
| 146 | * array('/home/foo/www/not/real/path' => '/real/target/path') // unix |
| 147 | * array('C:\\htdocs\\not\\real' => 'D:\\real\\target\\path') // Windows |
| 148 | * </code> |
| 149 | * |
| 150 | * @return string |
| 151 | */ |
| 152 | public static function rewriteRelative( $uri, $realCurrentDir, $realDocRoot, $symlinks = array() ) { |
| 153 | // prepend path with current dir separator (OS-independent) |
| 154 | $path = strtr( $realCurrentDir, '/', DIRECTORY_SEPARATOR ); |
| 155 | $path .= DIRECTORY_SEPARATOR . strtr( $uri, '/', DIRECTORY_SEPARATOR ); |
| 156 | |
| 157 | self::$debugText .= "file-relative URI : {$uri}\n" |
| 158 | . "path prepended : {$path}\n"; |
| 159 | |
| 160 | // "unresolve" a symlink back to doc root |
| 161 | foreach ( $symlinks as $link => $target ) { |
| 162 | if ( 0 === strpos( $path, $target ) ) { |
| 163 | // replace $target with $link |
| 164 | $path = $link . substr( $path, strlen( $target ) ); |
| 165 | |
| 166 | self::$debugText .= "symlink unresolved : {$path}\n"; |
| 167 | |
| 168 | break; |
| 169 | } |
| 170 | } |
| 171 | // strip doc root |
| 172 | $path = substr( $path, strlen( $realDocRoot ) ); |
| 173 | |
| 174 | self::$debugText .= "docroot stripped : {$path}\n"; |
| 175 | |
| 176 | // fix to root-relative URI |
| 177 | $uri = strtr( $path, '/\\', '//' ); |
| 178 | $uri = self::removeDots( $uri ); |
| 179 | |
| 180 | self::$debugText .= "traversals removed : {$uri}\n\n"; |
| 181 | |
| 182 | return $uri; |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Remove instances of "./" and "../" where possible from a root-relative URI |
| 187 | * |
| 188 | * @param string $uri |
| 189 | * |
| 190 | * @return string |
| 191 | */ |
| 192 | public static function removeDots( $uri ) { |
| 193 | $uri = str_replace( '/./', '/', $uri ); |
| 194 | // inspired by patch from Oleg Cherniy |
| 195 | do { |
| 196 | $uri = preg_replace( '@/[^/]+/\\.\\./@', '/', $uri, 1, $changed ); |
| 197 | } while ( $changed ); |
| 198 | |
| 199 | return $uri; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Get realpath with any trailing slash removed. If realpath() fails, |
| 204 | * just remove the trailing slash. |
| 205 | * |
| 206 | * @param string $path |
| 207 | * |
| 208 | * @return mixed path with no trailing slash |
| 209 | */ |
| 210 | protected static function _realpath( $path ) { |
| 211 | $realPath = realpath( $path ); |
| 212 | if ( $realPath !== false ) { |
| 213 | $path = $realPath; |
| 214 | } |
| 215 | |
| 216 | return rtrim( $path, '/\\' ); |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Directory of this stylesheet |
| 221 | * |
| 222 | * @var string |
| 223 | */ |
| 224 | private static $_currentDir = ''; |
| 225 | |
| 226 | /** |
| 227 | * DOC_ROOT |
| 228 | * |
| 229 | * @var string |
| 230 | */ |
| 231 | private static $_docRoot = ''; |
| 232 | |
| 233 | /** |
| 234 | * directory replacements to map symlink targets back to their |
| 235 | * source (within the document root) E.g. '/var/www/symlink' => '/var/realpath' |
| 236 | * |
| 237 | * @var array |
| 238 | */ |
| 239 | private static $_symlinks = array(); |
| 240 | |
| 241 | /** |
| 242 | * Path to prepend |
| 243 | * |
| 244 | * @var string |
| 245 | */ |
| 246 | private static $_prependPath = null; |
| 247 | |
| 248 | /** |
| 249 | * @param string $css |
| 250 | * |
| 251 | * @return string |
| 252 | */ |
| 253 | private static function _trimUrls( $css ) { |
| 254 | $pattern = '/ |
| 255 | url\\( # url( |
| 256 | \\s* |
| 257 | ([^\\)]+?) # 1 = URI (assuming does not contain ")") |
| 258 | \\s* |
| 259 | \\) # ) |
| 260 | /x'; |
| 261 | |
| 262 | return preg_replace( $pattern, 'url($1)', $css ); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * @param array $m |
| 267 | * |
| 268 | * @return string |
| 269 | */ |
| 270 | private static function _processUriCB( $m ) { |
| 271 | // $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/' |
| 272 | $isImport = ( $m[0][0] === '@' ); |
| 273 | // determine URI and the quote character (if any) |
| 274 | if ( $isImport ) { |
| 275 | $quoteChar = $m[1]; |
| 276 | $uri = $m[2]; |
| 277 | } else { |
| 278 | // $m[1] is either quoted or not |
| 279 | $quoteChar = ( $m[1][0] === "'" || $m[1][0] === '"' ) ? $m[1][0] : ''; |
| 280 | |
| 281 | $uri = ( $quoteChar === '' ) ? $m[1] : substr( $m[1], 1, strlen( $m[1] ) - 2 ); |
| 282 | } |
| 283 | |
| 284 | if ( $uri === '' ) { |
| 285 | return $m[0]; |
| 286 | } |
| 287 | |
| 288 | // if not anchor id, not root/scheme relative, and not starts with scheme |
| 289 | if ( ! preg_match( '~^(#|/|[a-z]+\:)~', $uri ) ) { |
| 290 | // URI is file-relative: rewrite depending on options |
| 291 | if ( self::$_prependPath === null ) { |
| 292 | $uri = self::rewriteRelative( $uri, self::$_currentDir, self::$_docRoot, self::$_symlinks ); |
| 293 | } else { |
| 294 | $uri = self::$_prependPath . $uri; |
| 295 | if ( $uri[0] === '/' ) { |
| 296 | $root = ''; |
| 297 | $rootRelative = $uri; |
| 298 | $uri = $root . self::removeDots( $rootRelative ); |
| 299 | } elseif ( preg_match( '@^((https?\:)?//([^/]+))/@', $uri, $m ) && ( false !== strpos( $m[3], '.' ) ) ) { |
| 300 | $root = $m[1]; |
| 301 | $rootRelative = substr( $uri, strlen( $root ) ); |
| 302 | $uri = $root . self::removeDots( $rootRelative ); |
| 303 | } |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | if ( $isImport ) { |
| 308 | return "@import {$quoteChar}{$uri}{$quoteChar}"; |
| 309 | } else { |
| 310 | return "url({$quoteChar}{$uri}{$quoteChar})"; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Mungs some inline SVG URL declarations so they won't be touched |
| 316 | * |
| 317 | * @link https://github.com/mrclay/minify/issues/517 |
| 318 | * @see _unOwlify |
| 319 | * |
| 320 | * @param string $css |
| 321 | * @return string |
| 322 | */ |
| 323 | private static function _owlifySvgPaths( $css ) { |
| 324 | $pattern = '~\b((?:clip-path|mask|-webkit-mask)\s*\:\s*)url(\(\s*#\w+\s*\))~'; |
| 325 | |
| 326 | return preg_replace( $pattern, '$1owl$2', $css ); |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * Undo work of _owlify |
| 331 | * |
| 332 | * @see _owlifySvgPaths |
| 333 | * |
| 334 | * @param string $css |
| 335 | * @return string |
| 336 | */ |
| 337 | private static function _unOwlify( $css ) { |
| 338 | $pattern = '~\b((?:clip-path|mask|-webkit-mask)\s*\:\s*)owl~'; |
| 339 | |
| 340 | return preg_replace( $pattern, '$1url', $css ); |
| 341 | } |
| 342 | } |
| 343 |