trunk/NP_TinyMCE2j/tinymce2j/plugins/ibrowser/scripts/phpThumb/phpthumb.functions.php

   1 <?php
   2 //////////////////////////////////////////////////////////////
   3 ///  phpThumb() by James Heinrich <info@silisoftware.com>   //
   4 //        available at http://phpthumb.sourceforge.net     ///
   5 //////////////////////////////////////////////////////////////
   6 ///                                                         //
   7 // phpthumb.functions.php - general support functions       //
   8 //                                                         ///
   9 //////////////////////////////////////////////////////////////
  10
  11 class phpthumb_functions {
  12
  13         function user_function_exists($functionname) {
  14                 if (function_exists('get_defined_functions')) {
  15                         static $get_defined_functions = array();
  16                         if (empty($get_defined_functions)) {
  17                                 $get_defined_functions = get_defined_functions();
  18                         }
  19                         return in_array(strtolower($functionname), $get_defined_functions['user']);
  20                 }
  21                 return function_exists($functionname);
  22         }
  23
  24         function builtin_function_exists($functionname) {
  25                 if (function_exists('get_defined_functions')) {
  26                         static $get_defined_functions = array();
  27                         if (empty($get_defined_functions)) {
  28                                 $get_defined_functions = get_defined_functions();
  29                         }
  30                         return in_array(strtolower($functionname), $get_defined_functions['internal']);
  31                 }
  32                 return function_exists($functionname);
  33         }
  34
  35         function version_compare_replacement_sub($version1, $version2, $operator='') {
  36                 // If you specify the third optional operator argument, you can test for a particular relationship.
  37                 // The possible operators are: <, lt, <=, le, >, gt, >=, ge, ==, =, eq, !=, <>, ne respectively.
  38                 // Using this argument, the function will return 1 if the relationship is the one specified by the operator, 0 otherwise.
  39
  40                 // If a part contains special version strings these are handled in the following order: dev < (alpha = a) < (beta = b) < RC < pl
  41                 static $versiontype_lookup = array();
  42                 if (empty($versiontype_lookup)) {
  43                         $versiontype_lookup['dev']   = 10001;
  44                         $versiontype_lookup['a']     = 10002;
  45                         $versiontype_lookup['alpha'] = 10002;
  46                         $versiontype_lookup['b']     = 10003;
  47                         $versiontype_lookup['beta']  = 10003;
  48                         $versiontype_lookup['RC']    = 10004;
  49                         $versiontype_lookup['pl']    = 10005;
  50                 }
  51                 if (isset($versiontype_lookup[$version1])) {
  52                         $version1 = $versiontype_lookup[$version1];
  53                 }
  54                 if (isset($versiontype_lookup[$version2])) {
  55                         $version2 = $versiontype_lookup[$version2];
  56                 }
  57
  58                 switch ($operator) {
  59                         case '<':
  60                         case 'lt':
  61                                 return intval($version1 < $version2);
  62                                 break;
  63                         case '<=':
  64                         case 'le':
  65                                 return intval($version1 <= $version2);
  66                                 break;
  67                         case '>':
  68                         case 'gt':
  69                                 return intval($version1 > $version2);
  70                                 break;
  71                         case '>=':
  72                         case 'ge':
  73                                 return intval($version1 >= $version2);
  74                                 break;
  75                         case '==':
  76                         case '=':
  77                         case 'eq':
  78                                 return intval($version1 == $version2);
  79                                 break;
  80                         case '!=':
  81                         case '<>':
  82                         case 'ne':
  83                                 return intval($version1 != $version2);
  84                                 break;
  85                 }
  86                 if ($version1 == $version2) {
  87                         return 0;
  88                 } elseif ($version1 < $version2) {
  89                         return -1;
  90                 }
  91                 return 1;
  92         }
  93
  94         function version_compare_replacement($version1, $version2, $operator='') {
  95                 if (function_exists('version_compare')) {
  96                         // built into PHP v4.1.0+
  97                         return version_compare($version1, $version2, $operator);
  98                 }
  99
 100                 // The function first replaces _, - and + with a dot . in the version strings
 101                 $version1 = strtr($version1, '_-+', '...');
 102                 $version2 = strtr($version2, '_-+', '...');
 103
 104                 // and also inserts dots . before and after any non number so that for example '4.3.2RC1' becomes '4.3.2.RC.1'.
 105                 // Then it splits the results like if you were using explode('.',$ver). Then it compares the parts starting from left to right.
 106                 $version1 = eregi_replace('([0-9]+)([A-Z]+)([0-9]+)', '\\1.\\2.\\3', $version1);
 107                 $version2 = eregi_replace('([0-9]+)([A-Z]+)([0-9]+)', '\\1.\\2.\\3', $version2);
 108
 109                 $parts1 = explode('.', $version1);
 110                 $parts2 = explode('.', $version1);
 111                 $parts_count = max(count($parts1), count($parts2));
 112                 for ($i = 0; $i < $parts_count; $i++) {
 113                         $comparison = phpthumb_functions::version_compare_replacement_sub($version1, $version2, $operator);
 114                         if ($comparison != 0) {
 115                                 return $comparison;
 116                         }
 117                 }
 118                 return 0;
 119         }
 120
 121         function phpinfo_array() {
 122                 static $phpinfo_array = array();
 123                 if (empty($phpinfo_array)) {
 124                         ob_start();
 125                         phpinfo();
 126                         $phpinfo = ob_get_contents();
 127                         ob_end_clean();
 128                         $phpinfo_array = explode("\n", $phpinfo);
 129                 }
 130                 return $phpinfo_array;
 131         }
 132
 133         function exif_info() {
 134                 static $exif_info = array();
 135                 if (empty($exif_info)) {
 136                         // based on code by johnschaefer at gmx dot de
 137                         // from PHP help on gd_info()
 138                         $exif_info = array(
 139                                 'EXIF Support'           => '',
 140                                 'EXIF Version'           => '',
 141                                 'Supported EXIF Version' => '',
 142                                 'Supported filetypes'    => ''
 143                         );
 144                         $phpinfo_array = phpthumb_functions::phpinfo_array();
 145                         foreach ($phpinfo_array as $line) {
 146                                 $line = trim(strip_tags($line));
 147                                 foreach ($exif_info as $key => $value) {
 148                                         if (strpos($line, $key) === 0) {
 149                                                 $newvalue = trim(str_replace($key, '', $line));
 150                                                 $exif_info[$key] = $newvalue;
 151                                         }
 152                                 }
 153                         }
 154                 }
 155                 return $exif_info;
 156         }
 157
 158         function ImageTypeToMIMEtype($imagetype) {
 159                 if (function_exists('image_type_to_mime_type')) {
 160                         return image_type_to_mime_type($imagetype);
 161                 }
 162                 static $image_type_to_mime_type = array(
 163                         1  => 'image/gif',                     // IMAGETYPE_GIF
 164                         2  => 'image/jpeg',                    // IMAGETYPE_JPEG
 165                         3  => 'image/png',                     // IMAGETYPE_PNG
 166                         4  => 'application/x-shockwave-flash', // IMAGETYPE_SWF
 167                         5  => 'image/psd',                     // IMAGETYPE_PSD
 168                         6  => 'image/bmp',                     // IMAGETYPE_BMP
 169                         7  => 'image/tiff',                    // IMAGETYPE_TIFF_II (intel byte order)
 170                         8  => 'image/tiff',                    // IMAGETYPE_TIFF_MM (motorola byte order)
 171                         9  => 'application/octet-stream',      // IMAGETYPE_JPC
 172                         10 => 'image/jp2',                     // IMAGETYPE_JP2
 173                         11 => 'application/octet-stream',      // IMAGETYPE_JPX
 174                         12 => 'application/octet-stream',      // IMAGETYPE_JB2
 175                         13 => 'application/x-shockwave-flash', // IMAGETYPE_SWC
 176                         14 => 'image/iff',                     // IMAGETYPE_IFF
 177                         15 => 'image/vnd.wap.wbmp',            // IMAGETYPE_WBMP
 178                         16 => 'image/xbm');                    // IMAGETYPE_XBM
 179
 180                 return (isset($image_type_to_mime_type[$imagetype]) ? $image_type_to_mime_type[$imagetype] : false);
 181         }
 182
 183         function HexCharDisplay($string) {
 184                 $len = strlen($string);
 185                 $output = '';
 186                 for ($i = 0; $i < $len; $i++) {
 187                         $output .= ' 0x'.str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
 188                 }
 189                 return $output;
 190         }
 191
 192         function IsHexColor($HexColorString) {
 193                 return eregi('^[0-9A-F]{6}$', $HexColorString);
 194         }
 195
 196         function ImageColorAllocateAlphaSafe(&$gdimg_hexcolorallocate, $R, $G, $B, $alpha=false) {
 197                 if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=') && ($alpha !== false)) {
 198                         return ImageColorAllocateAlpha($gdimg_hexcolorallocate, $R, $G, $B, intval($alpha));
 199                 } else {
 200                         return ImageColorAllocate($gdimg_hexcolorallocate, $R, $G, $B);
 201                 }
 202         }
 203
 204         function ImageHexColorAllocate(&$gdimg_hexcolorallocate, $HexColorString, $dieOnInvalid=false, $alpha=false) {
 205                 if (!is_resource($gdimg_hexcolorallocate)) {
 206                         die('$gdimg_hexcolorallocate is not a GD resource in ImageHexColorAllocate()');
 207                 }
 208                 if (phpthumb_functions::IsHexColor($HexColorString)) {
 209                         $R = hexdec(substr($HexColorString, 0, 2));
 210                         $G = hexdec(substr($HexColorString, 2, 2));
 211                         $B = hexdec(substr($HexColorString, 4, 2));
 212                         return phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_hexcolorallocate, $R, $G, $B, $alpha);
 213                 }
 214                 if ($dieOnInvalid) {
 215                         die('Invalid hex color string: "'.$HexColorString.'"');
 216                 }
 217                 return ImageColorAllocate($gdimg_hexcolorallocate, 0x00, 0x00, 0x00);
 218         }
 219
 220         function HexColorXOR($hexcolor) {
 221                 return strtoupper(str_pad(dechex(~hexdec($hexcolor) & 0xFFFFFF), 6, '0', STR_PAD_LEFT));
 222         }
 223
 224         function GetPixelColor(&$img, $x, $y) {
 225                 return @ImageColorsForIndex($img, @ImageColorAt($img, $x, $y));
 226         }
 227
 228         function GrayscaleValue($r, $g, $b) {
 229                 return round(($r * 0.30) + ($g * 0.59) + ($b * 0.11));
 230         }
 231
 232         function GrayscalePixel($OriginalPixel) {
 233                 $gray = phpthumb_functions::GrayscaleValue($OriginalPixel['red'], $OriginalPixel['green'], $OriginalPixel['blue']);
 234                 return array('red'=>$gray, 'green'=>$gray, 'blue'=>$gray);
 235         }
 236
 237         function ImageResizeFunction(&$dst_im, &$src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH) {
 238                 if (phpthumb_functions::gd_version() >= 2.0) {
 239                         return ImageCopyResampled($dst_im, $src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH);
 240                 }
 241                 return ImageCopyResized($dst_im, $src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH);
 242         }
 243
 244         function ImageCreateFunction($x_size, $y_size) {
 245                 $ImageCreateFunction = 'ImageCreate';
 246                 if (phpthumb_functions::gd_version() >= 2.0) {
 247                         $ImageCreateFunction = 'ImageCreateTrueColor';
 248                 }
 249                 if (!function_exists($ImageCreateFunction)) {
 250                         return phpthumb::ErrorImage($ImageCreateFunction.'() does not exist - no GD support?');
 251                 }
 252                 if (($x_size <= 0) || ($y_size <= 0)) {
 253                         return phpthumb::ErrorImage('Invalid image dimensions: '.$ImageCreateFunction.'('.$x_size.', '.$y_size.')');
 254                 }
 255                 return $ImageCreateFunction($x_size, $y_size);
 256         }
 257
 258         function ImageCopyRespectAlpha(&$dst_im, &$src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $pct=100) {
 259                 for ($x = $src_x; $x < $src_w; $x++) {
 260                         for ($y = $src_y; $y < $src_h; $y++) {
 261                                 $RealPixel    = phpthumb_functions::GetPixelColor($dst_im, $dst_x + $x, $dst_y + $y);
 262                                 $OverlayPixel = phpthumb_functions::GetPixelColor($src_im, $x, $y);
 263                                 $alphapct = $OverlayPixel['alpha'] / 127;
 264                                 $opacipct = $pct / 100;
 265                                 $overlaypct = (1 - $alphapct) * $opacipct;
 266
 267                                 $newcolor = phpthumb_functions::ImageColorAllocateAlphaSafe(
 268                                         $dst_im,
 269                                         round($RealPixel['red']   * (1 - $overlaypct)) + ($OverlayPixel['red']   * $overlaypct),
 270                                         round($RealPixel['green'] * (1 - $overlaypct)) + ($OverlayPixel['green'] * $overlaypct),
 271                                         round($RealPixel['blue']  * (1 - $overlaypct)) + ($OverlayPixel['blue']  * $overlaypct),
 272                                         //$RealPixel['alpha']);
 273                                         0);
 274
 275                                 ImageSetPixel($dst_im, $dst_x + $x, $dst_y + $y, $newcolor);
 276                         }
 277                 }
 278                 return true;
 279         }
 280
 281         function ProportionalResize($old_width, $old_height, $new_width=false, $new_height=false) {
 282                 $old_aspect_ratio = $old_width / $old_height;
 283                 if (($new_width === false) && ($new_height === false)) {
 284                         return false;
 285                 } elseif ($new_width === false) {
 286                         $new_width = $new_height * $old_aspect_ratio;
 287                 } elseif ($new_height === false) {
 288                         $new_height = $new_width / $old_aspect_ratio;
 289                 }
 290                 $new_aspect_ratio = $new_width / $new_height;
 291                 if ($new_aspect_ratio == $old_aspect_ratio) {
 292                         // great, done
 293                 } elseif ($new_aspect_ratio < $old_aspect_ratio) {
 294                         // limited by width
 295                         $new_height = $new_width / $old_aspect_ratio;
 296                 } elseif ($new_aspect_ratio > $old_aspect_ratio) {
 297                         // limited by height
 298                         $new_width = $new_height * $old_aspect_ratio;
 299                 }
 300                 return array(round($new_width), round($new_height));
 301         }
 302
 303         function SafeExec($command) {
 304                 static $AllowedExecFunctions = array();
 305                 if (empty($AllowedExecFunctions)) {
 306                         $AllowedExecFunctions = array('shell_exec'=>true, 'passthru'=>true, 'system'=>true, 'exec'=>true);
 307                         if (@ini_get('safe_mode')) {
 308                                 $AllowedExecFunctions['shell_exec'] = false;
 309                         }
 310                         $disable_functions = explode(',', @ini_get('disable_functions'));
 311                         foreach ($AllowedExecFunctions as $key => $value) {
 312                                 if (in_array($key, $disable_functions)) {
 313                                         $AllowedExecFunctions[$key] = false;
 314                                 }
 315                         }
 316                 }
 317                 foreach ($AllowedExecFunctions as $execfunction => $is_allowed) {
 318                         if (!$is_allowed) {
 319                                 continue;
 320                         }
 321                         if ($execfunction == 'passthru') {
 322                                 ob_start();
 323                                 $execfunction($command);
 324                                 $returnvalue = ob_get_contents();
 325                                 ob_end_clean();
 326                         } else {
 327                                 $returnvalue = @$execfunction($command);
 328                         }
 329                         return $returnvalue;
 330                 }
 331                 return false;
 332         }
 333
 334         function ApacheLookupURIarray($filename) {
 335                 // apache_lookup_uri() only works when PHP is installed as an Apache module.
 336                 if (php_sapi_name() == 'apache') {
 337                         $keys = array('status', 'the_request', 'status_line', 'method', 'content_type', 'handler', 'uri', 'filename', 'path_info', 'args', 'boundary', 'no_cache', 'no_local_copy', 'allowed', 'send_bodyct', 'bytes_sent', 'byterange', 'clength', 'unparsed_uri', 'mtime', 'request_time');
 338                         if ($apacheLookupURIobject = @apache_lookup_uri($filename)) {
 339                                 $apacheLookupURIarray = array();
 340                                 foreach ($keys as $key) {
 341                                         $apacheLookupURIarray[$key] = @$apacheLookupURIobject->$key;
 342                                 }
 343                                 return $apacheLookupURIarray;
 344                         }
 345                 }
 346                 return false;
 347         }
 348
 349         function gd_is_bundled() {
 350                 static $isbundled = null;
 351                 if (is_null($isbundled)) {
 352                         $gd_info = phpthumb_functions::gd_info();
 353                         $isbundled = (strpos($gd_info['GD Version'], 'bundled') !== false);
 354                 }
 355                 return $isbundled;
 356         }
 357
 358         function gd_version($fullstring=false) {
 359                 static $cache_gd_version = array();
 360                 if (empty($cache_gd_version)) {
 361                         $gd_info = phpthumb_functions::gd_info();
 362                         if (eregi('bundled \((.+)\)$', $gd_info['GD Version'], $matches)) {
 363                                 $cache_gd_version[1] = $gd_info['GD Version'];  // e.g. "bundled (2.0.15 compatible)"
 364                                 $cache_gd_version[0] = (float) $matches[1];     // e.g. "2.0" (not "bundled (2.0.15 compatible)")
 365                         } else {
 366                                 $cache_gd_version[1] = $gd_info['GD Version'];                       // e.g. "1.6.2 or higher"
 367                                 $cache_gd_version[0] = (float) substr($gd_info['GD Version'], 0, 3); // e.g. "1.6" (not "1.6.2 or higher")
 368                         }
 369                 }
 370                 return $cache_gd_version[intval($fullstring)];
 371         }
 372
 373         function gd_info() {
 374                 if (function_exists('gd_info')) {
 375                         // built into PHP v4.3.0+ (with bundled GD2 library)
 376                         return gd_info();
 377                 }
 378
 379                 static $gd_info = array();
 380                 if (empty($gd_info)) {
 381                         // based on code by johnschaefer at gmx dot de
 382                         // from PHP help on gd_info()
 383                         $gd_info = array(
 384                                 'GD Version'         => '',
 385                                 'FreeType Support'   => false,
 386                                 'FreeType Linkage'   => '',
 387                                 'T1Lib Support'      => false,
 388                                 'GIF Read Support'   => false,
 389                                 'GIF Create Support' => false,
 390                                 'JPG Support'        => false,
 391                                 'PNG Support'        => false,
 392                                 'WBMP Support'       => false,
 393                                 'XBM Support'        => false
 394                         );
 395                         $phpinfo_array = phpthumb_functions::phpinfo_array();
 396                         foreach ($phpinfo_array as $line) {
 397                                 $line = trim(strip_tags($line));
 398                                 foreach ($gd_info as $key => $value) {
 399                                         //if (strpos($line, $key) !== false) {
 400                                         if (strpos($line, $key) === 0) {
 401                                                 $newvalue = trim(str_replace($key, '', $line));
 402                                                 $gd_info[$key] = $newvalue;
 403                                         }
 404                                 }
 405                         }
 406                         if (empty($gd_info['GD Version'])) {
 407                                 // probable cause: "phpinfo() disabled for security reasons"
 408                                 if (function_exists('ImageTypes')) {
 409                                         $imagetypes = ImageTypes();
 410                                         if ($imagetypes & IMG_PNG) {
 411                                                 $gd_info['PNG Support'] = true;
 412                                         }
 413                                         if ($imagetypes & IMG_GIF) {
 414                                                 $gd_info['GIF Create Support'] = true;
 415                                         }
 416                                         if ($imagetypes & IMG_JPG) {
 417                                                 $gd_info['JPG Support'] = true;
 418                                         }
 419                                         if ($imagetypes & IMG_WBMP) {
 420                                                 $gd_info['WBMP Support'] = true;
 421                                         }
 422                                 }
 423                                 // to determine capability of GIF creation, try to use ImageCreateFromGIF on a 1px GIF
 424                                 if (function_exists('ImageCreateFromGIF')) {
 425                                         if ($tempfilename = phpthumb::phpThumb_tempnam()) {
 426                                                 if ($fp_tempfile = @fopen($tempfilename, 'wb')) {
 427                                                         fwrite($fp_tempfile, base64_decode('R0lGODlhAQABAIAAAH//AP///ywAAAAAAQABAAACAUQAOw==')); // very simple 1px GIF file base64-encoded as string
 428                                                         fclose($fp_tempfile);
 429
 430                                                         // if we can convert the GIF file to a GD image then GIF create support must be enabled, otherwise it's not
 431                                                         $gd_info['GIF Read Support'] = (bool) @ImageCreateFromGIF($tempfilename);
 432                                                 }
 433                                                 unlink($tempfilename);
 434                                         }
 435                                 }
 436                                 if (function_exists('ImageCreateTrueColor') && @ImageCreateTrueColor(1, 1)) {
 437                                         $gd_info['GD Version'] = '2.0.1 or higher (assumed)';
 438                                 } elseif (function_exists('ImageCreate') && @ImageCreate(1, 1)) {
 439                                         $gd_info['GD Version'] = '1.6.0 or higher (assumed)';
 440                                 }
 441                         }
 442                 }
 443                 return $gd_info;
 444         }
 445
 446         function filesize_remote($remotefile, $timeout=10) {
 447                 $size = false;
 448                 $url = parse_url($remotefile);
 449                 if ($fp = @fsockopen($url['host'], ($url['port'] ? $url['port'] : 80), $errno, $errstr, $timeout)) {
 450                         fwrite($fp, 'HEAD '.@$url['path'].@$url['query'].' HTTP/1.0'."\r\n".'Host: '.@$url['host']."\r\n\r\n");
 451                         if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {
 452                                 stream_set_timeout($fp, $timeout);
 453                         }
 454                         while (!feof($fp)) {
 455                                 $headerline = fgets($fp, 4096);
 456                                 if (eregi('^Content-Length: (.*)', $headerline, $matches)) {
 457                                         $size = intval($matches[1]);
 458                                         break;
 459                                 }
 460                         }
 461                         fclose ($fp);
 462                 }
 463                 return $size;
 464         }
 465
 466         function filedate_remote($remotefile, $timeout=10) {
 467                 $date = false;
 468                 $url = parse_url($remotefile);
 469                 if ($fp = @fsockopen($url['host'], ($url['port'] ? $url['port'] : 80), $errno, $errstr, $timeout)) {
 470                         fwrite($fp, 'HEAD '.@$url['path'].@$url['query'].' HTTP/1.0'."\r\n".'Host: '.@$url['host']."\r\n\r\n");
 471                         if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {
 472                                 stream_set_timeout($fp, $timeout);
 473                         }
 474                         while (!feof($fp)) {
 475                                 $headerline = fgets($fp, 4096);
 476                                 if (eregi('^Last-Modified: (.*)', $headerline, $matches)) {
 477                                         $date = strtotime($matches[1]) - date('Z');
 478                                         break;
 479                                 }
 480                         }
 481                         fclose ($fp);
 482                 }
 483                 return $date;
 484         }
 485
 486         function md5_file_safe($filename) {
 487                 // md5_file() doesn't exist in PHP < 4.2.0
 488                 if (function_exists('md5_file')) {
 489                         return md5_file($filename);
 490                 }
 491                 if ($fp = @fopen($filename, 'rb')) {
 492                         $filedata = fread($fp, filesize($filename));
 493                         fclose($fp);
 494                         return md5($filedata);
 495                 }
 496                 return false;
 497         }
 498
 499         function nonempty_min() {
 500                 $arg_list = func_get_args();
 501                 $acceptable = array();
 502                 foreach ($arg_list as $arg) {
 503                         if ($arg) {
 504                                 $acceptable[] = $arg;
 505                         }
 506                 }
 507                 return min($acceptable);
 508         }
 509
 510 }
 511
 512 ?>