| commit | author | age | ||
| 4e17e6 | 1 | <?php |
| T | 2 | |
| 3 | /* | |
| 4 | +-----------------------------------------------------------------------+ | |
| 5 | | rcube_shared.inc | | |
| 6 | | | | |
| 7 | | This file is part of the RoundCube PHP suite | | |
| f11541 | 8 | | Copyright (C) 2005-2007, RoundCube Dev. - Switzerland | |
| 30233b | 9 | | Licensed under the GNU GPL | |
| 4e17e6 | 10 | | | |
| T | 11 | | CONTENTS: | |
| 12 | | Shared functions and classes used in PHP projects | | |
| 13 | | | | |
| 14 | +-----------------------------------------------------------------------+ | |
| 15 | | Author: Thomas Bruederli <roundcube@gmail.com> | | |
| 16 | +-----------------------------------------------------------------------+ | |
| 17 | ||
| 18 | $Id$ | |
| 19 | ||
| 20 | */ | |
| 21 | ||
| 22 | ||
| 6d969b | 23 | /** |
| T | 24 | * RoundCube shared functions |
| 25 | * | |
| 26 | * @package Core | |
| 27 | */ | |
| 4e17e6 | 28 | |
| a0109c | 29 | |
| 6d969b | 30 | /** |
| T | 31 | * Send HTTP headers to prevent caching this page |
| 32 | */ | |
| 4e17e6 | 33 | function send_nocacheing_headers() |
| 6d969b | 34 | { |
| 4e17e6 | 35 | if (headers_sent()) |
| T | 36 | return; |
| 37 | ||
| 38 | header("Expires: ".gmdate("D, d M Y H:i:s")." GMT"); | |
| 39 | header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT"); | |
| 456c7e | 40 | header("Cache-Control: private, must-revalidate, post-check=0, pre-check=0"); |
| 4e17e6 | 41 | header("Pragma: no-cache"); |
| ebc619 | 42 | // Request browser to disable DNS prefetching (CVE-2010-0464) |
| A | 43 | header("X-DNS-Prefetch-Control: off"); |
| 0dbac3 | 44 | |
| T | 45 | // We need to set the following headers to make downloads work using IE in HTTPS mode. |
| 5818e4 | 46 | if (rcube_https_check()) { |
| 0dbac3 | 47 | header('Pragma: '); |
| T | 48 | header('Cache-Control: '); |
| 49 | } | |
| 6d969b | 50 | } |
| 4e17e6 | 51 | |
| T | 52 | |
| 6d969b | 53 | /** |
| T | 54 | * Send header with expire date 30 days in future |
| 55 | * | |
| 56 | * @param int Expiration time in seconds | |
| 57 | */ | |
| ff52be | 58 | function send_future_expire_header($offset=2600000) |
| 6d969b | 59 | { |
| 1a98a6 | 60 | if (headers_sent()) |
| T | 61 | return; |
| 62 | ||
| ff52be | 63 | header("Expires: ".gmdate("D, d M Y H:i:s", mktime()+$offset)." GMT"); |
| T | 64 | header("Cache-Control: max-age=$offset"); |
| 1a98a6 | 65 | header("Pragma: "); |
| 6d969b | 66 | } |
| 4e17e6 | 67 | |
| T | 68 | |
| 6d969b | 69 | /** |
| T | 70 | * Check request for If-Modified-Since and send an according response. |
| 71 | * This will terminate the current script if headers match the given values | |
| 72 | * | |
| 73 | * @param int Modified date as unix timestamp | |
| 74 | * @param string Etag value for caching | |
| 75 | */ | |
| 3f5cef | 76 | function send_modified_header($mdate, $etag=null, $skip_check=false) |
| ff52be | 77 | { |
| T | 78 | if (headers_sent()) |
| 79 | return; | |
| 80 | ||
| 81 | $iscached = false; | |
| 82 | $etag = $etag ? "\"$etag\"" : null; | |
| 3f5cef | 83 | |
| A | 84 | if (!$skip_check) |
| 85 | { | |
| 86 | if ($_SERVER['HTTP_IF_MODIFIED_SINCE'] && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $mdate) | |
| 87 | $iscached = true; | |
| 88 | ||
| 89 | if ($etag) | |
| 90 | $iscached = ($_SERVER['HTTP_IF_NONE_MATCH'] == $etag); | |
| 91 | } | |
| ff52be | 92 | |
| T | 93 | if ($iscached) |
| 94 | header("HTTP/1.x 304 Not Modified"); | |
| 95 | else | |
| 96 | header("Last-Modified: ".gmdate("D, d M Y H:i:s", $mdate)." GMT"); | |
| 97 | ||
| 496da6 | 98 | header("Cache-Control: private, must-revalidate, max-age=0"); |
| ff52be | 99 | header("Expires: "); |
| T | 100 | header("Pragma: "); |
| 101 | ||
| 102 | if ($etag) | |
| 103 | header("Etag: $etag"); | |
| 104 | ||
| 105 | if ($iscached) | |
| 1b4d73 | 106 | { |
| T | 107 | ob_end_clean(); |
| ff52be | 108 | exit; |
| 1b4d73 | 109 | } |
| ff52be | 110 | } |
| T | 111 | |
| 112 | ||
| f11541 | 113 | /** |
| T | 114 | * Similar function as in_array() but case-insensitive |
| 6d969b | 115 | * |
| T | 116 | * @param mixed Needle value |
| 117 | * @param array Array to search in | |
| 118 | * @return boolean True if found, False if not | |
| f11541 | 119 | */ |
| 4e17e6 | 120 | function in_array_nocase($needle, $haystack) |
| 6d969b | 121 | { |
| ee258c | 122 | $needle = mb_strtolower($needle); |
| 4e17e6 | 123 | foreach ($haystack as $value) |
| ee258c | 124 | if ($needle===mb_strtolower($value)) |
| 6d969b | 125 | return true; |
| T | 126 | |
| 127 | return false; | |
| 128 | } | |
| 4e17e6 | 129 | |
| T | 130 | |
| f11541 | 131 | /** |
| T | 132 | * Find out if the string content means TRUE or FALSE |
| 6d969b | 133 | * |
| T | 134 | * @param string Input value |
| 135 | * @return boolean Imagine what! | |
| f11541 | 136 | */ |
| 4e17e6 | 137 | function get_boolean($str) |
| 6d969b | 138 | { |
| 4e17e6 | 139 | $str = strtolower($str); |
| ee258c | 140 | if (in_array($str, array('false', '0', 'no', 'nein', ''), TRUE)) |
| 4e17e6 | 141 | return FALSE; |
| T | 142 | else |
| 143 | return TRUE; | |
| 6d969b | 144 | } |
| 4e17e6 | 145 | |
| T | 146 | |
| 6d969b | 147 | /** |
| T | 148 | * Parse a human readable string for a number of bytes |
| 149 | * | |
| 150 | * @param string Input string | |
| 47f072 | 151 | * @return float Number of bytes |
| 6d969b | 152 | */ |
| 86df15 | 153 | function parse_bytes($str) |
| 6d969b | 154 | { |
| 86df15 | 155 | if (is_numeric($str)) |
| 47f072 | 156 | return floatval($str); |
| 892af4 | 157 | |
| A | 158 | if (preg_match('/([0-9\.]+)\s*([a-z]*)/i', $str, $regs)) |
| 6d969b | 159 | { |
| T | 160 | $bytes = floatval($regs[1]); |
| 161 | switch (strtolower($regs[2])) | |
| 86df15 | 162 | { |
| 6d969b | 163 | case 'g': |
| 892af4 | 164 | case 'gb': |
| 6d969b | 165 | $bytes *= 1073741824; |
| T | 166 | break; |
| 167 | case 'm': | |
| 892af4 | 168 | case 'mb': |
| 6d969b | 169 | $bytes *= 1048576; |
| T | 170 | break; |
| 171 | case 'k': | |
| 892af4 | 172 | case 'kb': |
| 6d969b | 173 | $bytes *= 1024; |
| T | 174 | break; |
| 86df15 | 175 | } |
| 6d969b | 176 | } |
| 86df15 | 177 | |
| 47f072 | 178 | return floatval($bytes); |
| 6d969b | 179 | } |
| 86df15 | 180 | |
| 6d969b | 181 | /** |
| T | 182 | * Create a human readable string for a number of bytes |
| 183 | * | |
| 184 | * @param int Number of bytes | |
| 185 | * @return string Byte string | |
| 186 | */ | |
| 3ea0e3 | 187 | function show_bytes($bytes) |
| 6d969b | 188 | { |
| 3ea0e3 | 189 | if ($bytes > 1073741824) |
| 6d969b | 190 | { |
| 3ea0e3 | 191 | $gb = $bytes/1073741824; |
| f613a1 | 192 | $str = sprintf($gb>=10 ? "%d " : "%.1f ", $gb) . rcube_label('GB'); |
| 6d969b | 193 | } |
| 3ea0e3 | 194 | else if ($bytes > 1048576) |
| 6d969b | 195 | { |
| 3ea0e3 | 196 | $mb = $bytes/1048576; |
| f613a1 | 197 | $str = sprintf($mb>=10 ? "%d " : "%.1f ", $mb) . rcube_label('MB'); |
| 6d969b | 198 | } |
| 3ea0e3 | 199 | else if ($bytes > 1024) |
| f613a1 | 200 | $str = sprintf("%d ", round($bytes/1024)) . rcube_label('KB'); |
| 4e17e6 | 201 | else |
| f613a1 | 202 | $str = sprintf('%d ', $bytes) . rcube_label('B'); |
| 3ea0e3 | 203 | |
| T | 204 | return $str; |
| 6d969b | 205 | } |
| 4e17e6 | 206 | |
| T | 207 | |
| 6d969b | 208 | /** |
| T | 209 | * Convert paths like ../xxx to an absolute path using a base url |
| 210 | * | |
| 211 | * @param string Relative path | |
| 212 | * @param string Base URL | |
| 213 | * @return string Absolute URL | |
| 214 | */ | |
| 4e17e6 | 215 | function make_absolute_url($path, $base_url) |
| 6d969b | 216 | { |
| T | 217 | $host_url = $base_url; |
| 218 | $abs_path = $path; | |
| 97bd2c | 219 | |
| T | 220 | // check if path is an absolute URL |
| 221 | if (preg_match('/^[fhtps]+:\/\//', $path)) | |
| 222 | return $path; | |
| 4e17e6 | 223 | |
| 6d969b | 224 | // cut base_url to the last directory |
| aa055c | 225 | if (strrpos($base_url, '/')>7) |
| 6d969b | 226 | { |
| T | 227 | $host_url = substr($base_url, 0, strpos($base_url, '/')); |
| 228 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); | |
| 229 | } | |
| 230 | ||
| 231 | // $path is absolute | |
| 232 | if ($path{0}=='/') | |
| 233 | $abs_path = $host_url.$path; | |
| 234 | else | |
| 235 | { | |
| 236 | // strip './' because its the same as '' | |
| 237 | $path = preg_replace('/^\.\//', '', $path); | |
| 238 | ||
| 239 | if (preg_match_all('/\.\.\//', $path, $matches, PREG_SET_ORDER)) | |
| 240 | foreach ($matches as $a_match) | |
| 4e17e6 | 241 | { |
| 6d969b | 242 | if (strrpos($base_url, '/')) |
| T | 243 | $base_url = substr($base_url, 0, strrpos($base_url, '/')); |
| 244 | ||
| 245 | $path = substr($path, 3); | |
| 4e17e6 | 246 | } |
| T | 247 | |
| 6d969b | 248 | $abs_path = $base_url.'/'.$path; |
| T | 249 | } |
| 250 | ||
| 251 | return $abs_path; | |
| 252 | } | |
| 4e17e6 | 253 | |
| 7145e0 | 254 | /** |
| A | 255 | * Wrapper function for wordwrap |
| 256 | */ | |
| 257 | function rc_wordwrap($string, $width=75, $break="\n", $cut=false) | |
| 258 | { | |
| 259 | $para = explode($break, $string); | |
| 260 | $string = ''; | |
| 261 | while (count($para)) { | |
| 8ad5c8 | 262 | $line = array_shift($para); |
| T | 263 | if ($line[0] == '>') { |
| 264 | $string .= $line.$break; | |
| 265 | continue; | |
| 266 | } | |
| 267 | $list = explode(' ', $line); | |
| 7145e0 | 268 | $len = 0; |
| A | 269 | while (count($list)) { |
| 270 | $line = array_shift($list); | |
| 271 | $l = mb_strlen($line); | |
| 272 | $newlen = $len + $l + ($len ? 1 : 0); | |
| 273 | ||
| 274 | if ($newlen <= $width) { | |
| 275 | $string .= ($len ? ' ' : '').$line; | |
| 78ebe7 | 276 | $len += (1 + $l); |
| 7145e0 | 277 | } else { |
| 8ad5c8 | 278 | if ($l > $width) { |
| T | 279 | if ($cut) { |
| 280 | $start = 0; | |
| 281 | while ($l) { | |
| 282 | $str = mb_substr($line, $start, $width); | |
| 283 | $strlen = mb_strlen($str); | |
| 284 | $string .= ($len ? $break : '').$str; | |
| 285 | $start += $strlen; | |
| 286 | $l -= $strlen; | |
| 287 | $len = $strlen; | |
| 288 | } | |
| 289 | } else { | |
| 290 | $string .= ($len ? $break : '').$line; | |
| 291 | if (count($list)) $string .= $break; | |
| 292 | $len = 0; | |
| 293 | } | |
| 294 | } else { | |
| 7145e0 | 295 | $string .= $break.$line; |
| 8ad5c8 | 296 | $len = $l; |
| 7145e0 | 297 | } |
| A | 298 | } |
| 299 | } | |
| 300 | if (count($para)) $string .= $break; | |
| 301 | } | |
| 302 | return $string; | |
| 303 | } | |
| 86df15 | 304 | |
| 6d969b | 305 | /** |
| 88f66e | 306 | * Read a specific HTTP request header |
| T | 307 | * |
| 0144c5 | 308 | * @access static |
| T | 309 | * @param string $name Header name |
| 310 | * @return mixed Header value or null if not available | |
| 88f66e | 311 | */ |
| T | 312 | function rc_request_header($name) |
| 5a6eff | 313 | { |
| 88f66e | 314 | if (function_exists('getallheaders')) |
| 5a6eff | 315 | { |
| T | 316 | $hdrs = array_change_key_case(getallheaders(), CASE_UPPER); |
| 0144c5 | 317 | $key = strtoupper($name); |
| 5a6eff | 318 | } |
| 88f66e | 319 | else |
| 5a6eff | 320 | { |
| 0144c5 | 321 | $key = 'HTTP_' . strtoupper(strtr($name, '-', '_')); |
| db401b | 322 | $hdrs = array_change_key_case($_SERVER, CASE_UPPER); |
| 5a6eff | 323 | } |
| T | 324 | |
| 325 | return $hdrs[$key]; | |
| 88f66e | 326 | } |
| 1cded8 | 327 | |
| T | 328 | |
| 6d969b | 329 | /** |
| T | 330 | * Make sure the string ends with a slash |
| 331 | */ | |
| bac7d1 | 332 | function slashify($str) |
| 6d969b | 333 | { |
| bac7d1 | 334 | return unslashify($str).'/'; |
| 6d969b | 335 | } |
| bac7d1 | 336 | |
| T | 337 | |
| 6d969b | 338 | /** |
| T | 339 | * Remove slash at the end of the string |
| 340 | */ | |
| bac7d1 | 341 | function unslashify($str) |
| 6d969b | 342 | { |
| bac7d1 | 343 | return preg_replace('/\/$/', '', $str); |
| 6d969b | 344 | } |
| bac7d1 | 345 | |
| T | 346 | |
| 6d969b | 347 | /** |
| T | 348 | * Delete all files within a folder |
| 349 | * | |
| 350 | * @param string Path to directory | |
| 351 | * @return boolean True on success, False if directory was not found | |
| 352 | */ | |
| 1cded8 | 353 | function clear_directory($dir_path) |
| 6d969b | 354 | { |
| 1cded8 | 355 | $dir = @opendir($dir_path); |
| T | 356 | if(!$dir) return FALSE; |
| 357 | ||
| 358 | while ($file = readdir($dir)) | |
| 359 | if (strlen($file)>2) | |
| 360 | unlink("$dir_path/$file"); | |
| 361 | ||
| 362 | closedir($dir); | |
| 363 | return TRUE; | |
| 6d969b | 364 | } |
| 9fee0e | 365 | |
| T | 366 | |
| 6d969b | 367 | /** |
| T | 368 | * Create a unix timestamp with a specified offset from now |
| 369 | * | |
| 370 | * @param string String representation of the offset (e.g. 20min, 5h, 2days) | |
| 371 | * @param int Factor to multiply with the offset | |
| 372 | * @return int Unix timestamp | |
| 373 | */ | |
| cc9570 | 374 | function get_offset_time($offset_str, $factor=1) |
| T | 375 | { |
| 376 | if (preg_match('/^([0-9]+)\s*([smhdw])/i', $offset_str, $regs)) | |
| 6d969b | 377 | { |
| cc9570 | 378 | $amount = (int)$regs[1]; |
| T | 379 | $unit = strtolower($regs[2]); |
| 6d969b | 380 | } |
| cc9570 | 381 | else |
| 6d969b | 382 | { |
| cc9570 | 383 | $amount = (int)$offset_str; |
| T | 384 | $unit = 's'; |
| 6d969b | 385 | } |
| cc9570 | 386 | |
| T | 387 | $ts = mktime(); |
| 388 | switch ($unit) | |
| 6d969b | 389 | { |
| cc9570 | 390 | case 'w': |
| T | 391 | $amount *= 7; |
| 392 | case 'd': | |
| 393 | $amount *= 24; | |
| 394 | case 'h': | |
| 395 | $amount *= 60; | |
| bd4959 | 396 | case 'm': |
| cc9570 | 397 | $amount *= 60; |
| T | 398 | case 's': |
| 399 | $ts += $amount * $factor; | |
| 6d969b | 400 | } |
| cc9570 | 401 | |
| T | 402 | return $ts; |
| 6d969b | 403 | } |
| cc9570 | 404 | |
| ee258c | 405 | |
| A | 406 | /** |
| 407 | * Replace the middle part of a string with ... | |
| 408 | * if it is longer than the allowed length | |
| 409 | * | |
| 410 | * @param string Input string | |
| 411 | * @param int Max. length | |
| 412 | * @param string Replace removed chars with this | |
| 413 | * @return string Abbreviated string | |
| 414 | */ | |
| 415 | function abbreviate_string($str, $maxlength, $place_holder='...') | |
| 416 | { | |
| 417 | $length = mb_strlen($str); | |
| 418 | ||
| 419 | if ($length > $maxlength) | |
| 420 | { | |
| cea5bc | 421 | $place_holder_length = mb_strlen($place_holder); |
| A | 422 | $first_part_length = floor(($maxlength - $place_holder_length)/2); |
| 423 | $second_starting_location = $length - $maxlength + $first_part_length + $place_holder_length; | |
| 424 | $str = mb_substr($str, 0, $first_part_length) . $place_holder . mb_substr($str, $second_starting_location); | |
| ee258c | 425 | } |
| A | 426 | |
| 427 | return $str; | |
| 428 | } | |
| cc9570 | 429 | |
| a0109c | 430 | /** |
| 734584 | 431 | * A method to guess the mime_type of an attachment. |
| T | 432 | * |
| d311d8 | 433 | * @param string $path Path to the file. |
| A | 434 | * @param string $name File name (with suffix) |
| 435 | * @param string $failover Mime type supplied for failover. | |
| 436 | * @param string $is_stream Set to True if $path contains file body | |
| 734584 | 437 | * |
| T | 438 | * @return string |
| 439 | * @author Till Klampaeckel <till@php.net> | |
| 440 | * @see http://de2.php.net/manual/en/ref.fileinfo.php | |
| 441 | * @see http://de2.php.net/mime_content_type | |
| 442 | */ | |
| d311d8 | 443 | function rc_mime_content_type($path, $name, $failover = 'application/octet-stream', $is_stream=false) |
| 734584 | 444 | { |
| 6d5dba | 445 | $mime_type = null; |
| T | 446 | $mime_magic = rcmail::get_instance()->config->get('mime_magic'); |
| 0ea569 | 447 | $mime_ext = @include(RCMAIL_CONFIG_DIR . '/mimetypes.php'); |
| T | 448 | $suffix = $name ? substr($name, strrpos($name, '.')+1) : '*'; |
| a0109c | 449 | |
| 0ea569 | 450 | // use file name suffix with hard-coded mime-type map |
| T | 451 | if (is_array($mime_ext)) { |
| 452 | $mime_type = $mime_ext[$suffix]; | |
| 734584 | 453 | } |
| 0ea569 | 454 | // try fileinfo extension if available |
| 3e6380 | 455 | if (!$mime_type && function_exists('finfo_open')) { |
| A | 456 | if ($finfo = finfo_open(FILEINFO_MIME, $mime_magic)) { |
| d311d8 | 457 | if ($is_stream) |
| A | 458 | $mime_type = finfo_buffer($finfo, $path); |
| 459 | else | |
| 460 | $mime_type = finfo_file($finfo, $path); | |
| 3e6380 | 461 | finfo_close($finfo); |
| 734584 | 462 | } |
| T | 463 | } |
| 0ea569 | 464 | // try PHP's mime_content_type |
| d311d8 | 465 | if (!$mime_type && !$is_stream && function_exists('mime_content_type')) { |
| A | 466 | $mime_type = @mime_content_type($path); |
| 6d5dba | 467 | } |
| 0ea569 | 468 | // fall back to user-submitted string |
| 734584 | 469 | if (!$mime_type) { |
| 6d5dba | 470 | $mime_type = $failover; |
| 734584 | 471 | } |
| T | 472 | |
| 473 | return $mime_type; | |
| 474 | } | |
| 475 | ||
| b54121 | 476 | /** |
| A | 477 | * A method to guess encoding of a string. |
| 478 | * | |
| 479 | * @param string $string String. | |
| 480 | * @param string $failover Default result for failover. | |
| 481 | * | |
| 482 | * @return string | |
| 483 | */ | |
| 484 | function rc_detect_encoding($string, $failover='') | |
| 485 | { | |
| 486 | if (!function_exists('mb_detect_encoding')) { | |
| 487 | return $failover; | |
| 488 | } | |
| 489 | ||
| 490 | // FIXME: the order is important, because sometimes | |
| 491 | // iso string is detected as euc-jp and etc. | |
| 492 | $enc = array( | |
| b58f11 | 493 | 'UTF-8', 'SJIS', 'BIG5', 'GB2312', |
| T | 494 | 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4', |
| 495 | 'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9', | |
| 496 | 'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16', | |
| 497 | 'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R', | |
| 498 | 'ISO-2022-KR', 'ISO-2022-JP' | |
| b54121 | 499 | ); |
| A | 500 | |
| 501 | $result = mb_detect_encoding($string, join(',', $enc)); | |
| 502 | ||
| 503 | return $result ? $result : $failover; | |
| 504 | } | |
| 505 | ||
| 1a00f1 | 506 | /** |
| A | 507 | * Removes non-unicode characters from input |
| 508 | * | |
| 509 | * @param mixed $input String or array. | |
| 510 | * @return string | |
| 511 | */ | |
| 512 | function rc_utf8_clean($input) | |
| 513 | { | |
| 514 | // handle input of type array | |
| 515 | if (is_array($input)) { | |
| 516 | foreach ($input as $idx => $val) | |
| 517 | $input[$idx] = rc_utf8_clean($val); | |
| 518 | return $input; | |
| 519 | } | |
| 520 | ||
| b6c512 | 521 | if (!is_string($input) || $input == '') |
| 1a00f1 | 522 | return $input; |
| 2717f9 | 523 | |
| b6c512 | 524 | // iconv/mbstring are much faster (especially with long strings) |
| 6481d4 | 525 | if (function_exists('mb_convert_encoding') && ($res = mb_convert_encoding($input, 'UTF-8', 'UTF-8')) !== false) |
| b6c512 | 526 | return $res; |
| A | 527 | |
| ecbd5b | 528 | if (function_exists('iconv') && ($res = @iconv('UTF-8', 'UTF-8//IGNORE', $input)) !== false) |
| b6c512 | 529 | return $res; |
| 1a00f1 | 530 | |
| A | 531 | $regexp = '/^('. |
| 532 | // '[\x00-\x7F]'. // UTF8-1 | |
| 533 | '|[\xC2-\xDF][\x80-\xBF]'. // UTF8-2 | |
| 534 | '|\xE0[\xA0-\xBF][\x80-\xBF]'. // UTF8-3 | |
| 535 | '|[\xE1-\xEC][\x80-\xBF][\x80-\xBF]'. // UTF8-3 | |
| 536 | '|\xED[\x80-\x9F][\x80-\xBF]'. // UTF8-3 | |
| 537 | '|[\xEE-\xEF][\x80-\xBF][\x80-\xBF]'. // UTF8-3 | |
| 538 | '|\xF0[\x90-\xBF][\x80-\xBF][\x80-\xBF]'. // UTF8-4 | |
| 539 | '|[\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF]'.// UTF8-4 | |
| 540 | '|\xF4[\x80-\x8F][\x80-\xBF][\x80-\xBF]'. // UTF8-4 | |
| 541 | ')$/'; | |
| 542 | ||
| 543 | $seq = ''; | |
| 544 | $out = ''; | |
| 545 | ||
| 6481d4 | 546 | for ($i = 0, $len = strlen($input); $i < $len; $i++) { |
| 1a00f1 | 547 | $chr = $input[$i]; |
| A | 548 | $ord = ord($chr); |
| 549 | // 1-byte character | |
| 550 | if ($ord <= 0x7F) { | |
| 551 | if ($seq) | |
| 552 | $out .= preg_match($regexp, $seq) ? $seq : ''; | |
| 553 | $seq = ''; | |
| 554 | $out .= $chr; | |
| 555 | // first (or second) byte of multibyte sequence | |
| 556 | } else if ($ord >= 0xC0) { | |
| 557 | if (strlen($seq)>1) { | |
| 558 | $out .= preg_match($regexp, $seq) ? $seq : ''; | |
| 559 | $seq = ''; | |
| 560 | } else if ($seq && ord($seq) < 0xC0) { | |
| 561 | $seq = ''; | |
| 562 | } | |
| 563 | $seq .= $chr; | |
| 564 | // next byte of multibyte sequence | |
| 565 | } else if ($seq) { | |
| 566 | $seq .= $chr; | |
| 567 | } | |
| 568 | } | |
| 569 | ||
| 570 | if ($seq) | |
| 571 | $out .= preg_match($regexp, $seq) ? $seq : ''; | |
| 572 | ||
| 573 | return $out; | |
| 574 | } | |
| 0ff635 | 575 | |
| 2717f9 | 576 | |
| A | 577 | /** |
| 578 | * Convert a variable into a javascript object notation | |
| 579 | * | |
| 580 | * @param mixed Input value | |
| 581 | * @return string Serialized JSON string | |
| 582 | */ | |
| 583 | function json_serialize($input) | |
| 584 | { | |
| 585 | $input = rc_utf8_clean($input); | |
| 63ffe3 | 586 | |
| a7dba8 | 587 | // sometimes even using rc_utf8_clean() the input contains invalid UTF-8 sequences |
| A | 588 | // that's why we have @ here |
| 589 | return @json_encode($input); | |
| 2717f9 | 590 | } |
| A | 591 | |
| 592 | ||
| 0ff635 | 593 | /** |
| A | 594 | * Explode quoted string |
| 595 | * | |
| 596 | * @param string Delimiter expression string for preg_match() | |
| 597 | * @param string Input string | |
| 598 | */ | |
| 599 | function rcube_explode_quoted_string($delimiter, $string) | |
| 600 | { | |
| 601 | $result = array(); | |
| 602 | $strlen = strlen($string); | |
| 603 | ||
| 604 | for ($q=$p=$i=0; $i < $strlen; $i++) { | |
| 605 | if ($string[$i] == "\"" && $string[$i-1] != "\\") { | |
| 606 | $q = $q ? false : true; | |
| 607 | } | |
| 608 | else if (!$q && preg_match("/$delimiter/", $string[$i])) { | |
| 609 | $result[] = substr($string, $p, $i - $p); | |
| 610 | $p = $i + 1; | |
| 611 | } | |
| 612 | } | |
| 613 | ||
| 614 | $result[] = substr($string, $p); | |
| 615 | return $result; | |
| 616 | } | |
| 617 | ||
| ee258c | 618 | |
| A | 619 | /** |
| f52c93 | 620 | * Get all keys from array (recursive) |
| T | 621 | * |
| 622 | * @param array Input array | |
| 623 | * @return array | |
| 624 | */ | |
| 625 | function array_keys_recursive($array) | |
| 626 | { | |
| 627 | $keys = array(); | |
| 628 | ||
| 629 | if (!empty($array)) | |
| 630 | foreach ($array as $key => $child) { | |
| 631 | $keys[] = $key; | |
| 632 | if ($children = array_keys_recursive($child)) | |
| 633 | $keys = array_merge($keys, $children); | |
| 634 | } | |
| 635 | return $keys; | |
| 636 | } | |
| 637 | ||
| 638 | ||
| 639 | /** | |
| ee258c | 640 | * mbstring replacement functions |
| A | 641 | */ |
| 642 | ||
| 8f6a46 | 643 | if (!extension_loaded('mbstring')) |
| A | 644 | { |
| ee258c | 645 | function mb_strlen($str) |
| A | 646 | { |
| 647 | return strlen($str); | |
| 648 | } | |
| 649 | ||
| 650 | function mb_strtolower($str) | |
| 651 | { | |
| 652 | return strtolower($str); | |
| 653 | } | |
| 654 | ||
| 655 | function mb_strtoupper($str) | |
| 656 | { | |
| 657 | return strtoupper($str); | |
| 658 | } | |
| 659 | ||
| 660 | function mb_substr($str, $start, $len=null) | |
| 661 | { | |
| 662 | return substr($str, $start, $len); | |
| 663 | } | |
| 664 | ||
| 665 | function mb_strpos($haystack, $needle, $offset=0) | |
| 666 | { | |
| 667 | return strpos($haystack, $needle, $offset); | |
| 668 | } | |
| 669 | ||
| 670 | function mb_strrpos($haystack, $needle, $offset=0) | |
| 671 | { | |
| 672 | return strrpos($haystack, $needle, $offset); | |
| 673 | } | |
| 674 | } | |
| 675 | ||
| b54121 | 676 | ?> |
