| 1 |
<?php |
| 2 |
|
| 3 |
$orig_srcpath='../tests/tiger.png'; // as specified in your file (could be full URL) |
| 4 |
$file = 'http://127.0.0.1/MPDF1.com/common/mpdf/tests/tiger.png'; // Full URL |
| 5 |
$fileIsLocal = true; // is the file in the same domain? |
| 6 |
|
| 7 |
//====================================================================== |
| 8 |
|
| 9 |
$ppUx = 0; |
| 10 |
$type = ''; |
| 11 |
$data = ''; |
| 12 |
|
| 13 |
echo 'File: ' .$orig_srcpath . '<br />'; |
| 14 |
echo 'Full File URL: ' .$file . '<br />'; |
| 15 |
if ($orig_srcpath && $fileIsLocal && $check = @fopen($orig_srcpath,"rb")) { |
| 16 |
fclose($check); |
| 17 |
$file=$orig_srcpath; |
| 18 |
$data = file_get_contents($file); |
| 19 |
$type = _imageTypeFromString($data); |
| 20 |
echo 'File accessed using fopen on $orig_srcpath' . '<br />'; |
| 21 |
} |
| 22 |
if (!$data && $check = @fopen($file,"rb")) { |
| 23 |
fclose($check); |
| 24 |
$data = file_get_contents($file); |
| 25 |
$type = _imageTypeFromString($data); |
| 26 |
echo 'File accessed using fopen on $file' . '<br />'; |
| 27 |
} |
| 28 |
if ((!$data || !$type) && !ini_get('allow_url_fopen') ) { // only worth trying if remote file and !ini_get('allow_url_fopen') |
| 29 |
file_get_contents_by_socket($file, $data); // needs full url?? even on local (never needed for local) |
| 30 |
if ($data) { $type = _imageTypeFromString($data); } |
| 31 |
echo 'File accessed using socket ' . '<br />'; |
| 32 |
} |
| 33 |
if ((!$data || !$type) && !ini_get('allow_url_fopen') && function_exists("curl_init")) { |
| 34 |
file_get_contents_by_curl($file, $data); // needs full url?? even on local (never needed for local) |
| 35 |
if ($data) { $type = _imageTypeFromString($data); } |
| 36 |
echo 'File accessed using cURL ' . '<br />'; |
| 37 |
} |
| 38 |
|
| 39 |
|
| 40 |
|
| 41 |
if (!$data) { echo 'Could not access image file' . '<br />'; exit; } |
| 42 |
|
| 43 |
echo 'Image type determined: ' .strtoupper($type) . '<br />'; |
| 44 |
|
| 45 |
// JPEG |
| 46 |
if ($type == 'jpeg' || $type == 'jpg') { |
| 47 |
$hdr = _jpgHeaderFromString($data); |
| 48 |
if (!$hdr) { echo 'Error parsing JPG header' . '<br />'; exit; } |
| 49 |
$a = _jpgDataFromHeader($hdr); |
| 50 |
$channels = intval($a[4]); |
| 51 |
echo 'Width: ' . $a[0]. '<br />'; |
| 52 |
echo 'Height: ' . $a[1]. '<br />'; |
| 53 |
echo 'Colorspace: ' . $a[2]. '<br />'; |
| 54 |
echo 'BPC (bits per channel): ' . $a[3]. '<br />'; |
| 55 |
echo 'Channels: ' . $channels. '<br />'; |
| 56 |
|
| 57 |
$j = strpos($data,'JFIF'); |
| 58 |
if ($j) { |
| 59 |
//Read resolution |
| 60 |
$unitSp=ord(substr($data,($j+7),1)); |
| 61 |
if ($unitSp > 0) { |
| 62 |
$ppUx=_twobytes2int(substr($data,($j+8),2)); // horizontal pixels per meter, usually set to zero |
| 63 |
if ($unitSp == 2) { // = dots per cm (if == 1 set as dpi) |
| 64 |
$ppUx=round($ppUx/10 *25.4); |
| 65 |
} |
| 66 |
} |
| 67 |
echo 'Resolution ppUx: ' . $ppUx. '<br />'; |
| 68 |
} |
| 69 |
else echo 'JFIF not found in header' . '<br />'; |
| 70 |
|
| 71 |
|
| 72 |
// mPDF 6 ICC profile |
| 73 |
$offset = 0; |
| 74 |
$icc = array(); |
| 75 |
while (($pos = strpos($data, "ICC_PROFILE\0", $offset)) !== false) { |
| 76 |
// get ICC sequence length |
| 77 |
$length = _twobytes2int(substr($data, ($pos - 2),2)) - 16; |
| 78 |
$sn = max(1, ord($data[($pos + 12)])); |
| 79 |
$nom = max(1, ord($data[($pos + 13)])); |
| 80 |
$icc[($sn - 1)] = substr($data, ($pos + 14), $length); |
| 81 |
$offset = ($pos + 14 + $length); |
| 82 |
} |
| 83 |
// order and compact ICC segments |
| 84 |
if (count($icc) > 0) { |
| 85 |
echo 'ICC profile present' . '<br />'; |
| 86 |
ksort($icc); |
| 87 |
$icc = implode('', $icc); |
| 88 |
if (substr($icc, 36, 4) != 'acsp') { |
| 89 |
// invalid ICC profile |
| 90 |
echo 'ICC profile INVALID (no acsp flag)' . '<br />'; |
| 91 |
} |
| 92 |
$input = substr($icc, 16, 4); |
| 93 |
$output = substr($icc, 20, 4); |
| 94 |
echo 'ICC profile Input: ' . $input. '<br />'; |
| 95 |
echo 'ICC profile Output: ' . $output. '<br />'; |
| 96 |
// Ignore Color profiles for conversion to other colorspaces e.g. CMYK/Lab |
| 97 |
if ($input != 'RGB ' || $output != 'XYZ ') { echo 'ICC profile ignored by mPDF' . '<br />'; } |
| 98 |
} |
| 99 |
|
| 100 |
} |
| 101 |
|
| 102 |
// PNG |
| 103 |
else if ($type == 'png') { |
| 104 |
//Check signature |
| 105 |
if(substr($data,0,8)!=chr(137).'PNG'.chr(13).chr(10).chr(26).chr(10)) { |
| 106 |
echo 'Error parsing PNG identifier<br />'; exit; |
| 107 |
} |
| 108 |
//Read header chunk |
| 109 |
if(substr($data,12,4)!='IHDR') { |
| 110 |
echo 'Incorrect PNG file (no IHDR block found)<br />'; exit; |
| 111 |
} |
| 112 |
|
| 113 |
$w=_fourbytes2int(substr($data,16,4)); |
| 114 |
$h=_fourbytes2int(substr($data,20,4)); |
| 115 |
$bpc=ord(substr($data,24,1)); |
| 116 |
$errpng = false; |
| 117 |
$pngalpha = false; |
| 118 |
$channels = 0; |
| 119 |
|
| 120 |
echo 'Width: ' .$w . '<br />'; |
| 121 |
echo 'Height: ' .$h . '<br />'; |
| 122 |
echo 'BPC (bits per channel): ' .$bpc . '<br />'; |
| 123 |
|
| 124 |
$ct=ord(substr($data,25,1)); |
| 125 |
if($ct==0) { $colspace='DeviceGray'; $channels = 1; } |
| 126 |
elseif($ct==2) { $colspace='DeviceRGB'; $channels = 3; } |
| 127 |
elseif($ct==3) { $colspace='Indexed'; $channels = 1; } |
| 128 |
elseif($ct==4) { $colspace='DeviceGray'; $channels = 1; $errpng = 'alpha channel'; $pngalpha = true; } |
| 129 |
else { $colspace='DeviceRGB'; $channels = 3; $errpng = 'alpha channel'; $pngalpha = true; } |
| 130 |
|
| 131 |
echo 'Colorspace: ' . $colspace. '<br />'; |
| 132 |
echo 'Channels: ' . $channels. '<br />'; |
| 133 |
if ($pngalpha) echo 'Alpha channel detected'. '<br />'; |
| 134 |
|
| 135 |
if ($ct < 4 && strpos($data,'tRNS')!==false) { echo 'Transparency detected'. '<br />'; $errpng = 'transparency'; $pngalpha = true;} |
| 136 |
|
| 137 |
if ($ct == 3 && strpos($data,'iCCP')!==false) { echo 'Indexed plus ICC'. '<br />'; $errpng = 'indexed plus ICC'; } |
| 138 |
|
| 139 |
if(ord(substr($data,26,1))!=0) { echo 'compression method not set to zero<br />'; $errpng = 'compression method'; } // only 0 should be specified |
| 140 |
if(ord(substr($data,27,1))!=0) { echo 'filter method not set to zero<br />'; $errpng = 'filter method'; } // only 0 should be specified |
| 141 |
if(ord(substr($data,28,1))!=0) { echo 'interlaced file not set to zero<br />'; $errpng = 'interlaced file'; } |
| 142 |
|
| 143 |
$j = strpos($data,'pHYs'); |
| 144 |
if ($j) { |
| 145 |
//Read resolution |
| 146 |
$unitSp=ord(substr($data,($j+12),1)); |
| 147 |
if ($unitSp == 1) { |
| 148 |
$ppUx=_fourbytes2int(substr($data,($j+4),4)); // horizontal pixels per meter, usually set to zero |
| 149 |
$ppUx=round($ppUx/1000 *25.4); |
| 150 |
} |
| 151 |
echo 'Resolution ppUx: ' . $ppUx. '<br />'; |
| 152 |
} |
| 153 |
|
| 154 |
// mPDF 6 Gamma correction |
| 155 |
$gamma_correction = 0; |
| 156 |
$gAMA = 0; |
| 157 |
$j = strpos($data,'gAMA'); |
| 158 |
if ($j && strpos($data,'sRGB')===false) { // sRGB colorspace - overrides gAMA |
| 159 |
$gAMA=_fourbytes2int(substr($data,($j+4),4)); // Gamma value times 100000 |
| 160 |
$gAMA /= 100000; |
| 161 |
|
| 162 |
} |
| 163 |
|
| 164 |
if ($gAMA) { $gamma_correction = 1/$gAMA; } |
| 165 |
|
| 166 |
// Don't need to apply gamma correction if == default i.e. 2.2 |
| 167 |
if ($gamma_correction > 2.15 && $gamma_correction < 2.25) { $gamma_correction = 0; } |
| 168 |
|
| 169 |
if ($gamma_correction) { echo 'Gamma correction detected'. '<br />'; } |
| 170 |
|
| 171 |
// NOT supported at present |
| 172 |
if (strpos($data,'sRGB')!==false) echo 'sRGB colorspace - NOT supported at present'. '<br />'; |
| 173 |
if (strpos($data,'cHRM')!==false) echo 'Chromaticity and Whitepoint - NOT supported at present'. '<br />'; |
| 174 |
|
| 175 |
if (($errpng || $pngalpha || $gamma_correction)) { |
| 176 |
if (function_exists('gd_info')) { $gd = gd_info(); } |
| 177 |
else {$gd = array(); } |
| 178 |
if (!isset($gd['PNG Support'])) { echo 'GD library required for PNG image ('.$errpng.')'. '<br />';} |
| 179 |
$im = imagecreatefromstring($data); |
| 180 |
|
| 181 |
if (!$im) { echo 'Error creating GD image from PNG file ('.$errpng.')'. '<br />';} |
| 182 |
$w = imagesx($im); |
| 183 |
$h = imagesy($im); |
| 184 |
if ($im) { |
| 185 |
|
| 186 |
// Alpha channel set (including using tRNS for Paletted images) |
| 187 |
if ($pngalpha) { |
| 188 |
echo 'Alpha channel will be used by mPDF (including when tRNS present in Paletted images)<br />'; |
| 189 |
if ($colspace=='Indexed') { echo '...Generating Alpha channel values from tRNS (Indexed)<br />'; } |
| 190 |
else if ($ct===0 || $ct==2) { echo '...Generating Alpha channel values from tRNS (non-Indexed)<br />'; } |
| 191 |
else { echo '...Extracting Alpha channel<br />'; } |
| 192 |
|
| 193 |
|
| 194 |
} |
| 195 |
else { // No alpha/transparency set (but cannot read directly because e.g. bit-depth != 8, interlaced etc) |
| 196 |
echo 'No alpha/transparency set (but cannot read directly because e.g. bit-depth != 8, interlaced etc)<br />'; |
| 197 |
|
| 198 |
// ICC profile |
| 199 |
$icc = false; |
| 200 |
$p = strpos($data,'iCCP'); |
| 201 |
if ($p && $colspace=="Indexed") { |
| 202 |
$p += 4; |
| 203 |
$n=_fourbytes2int(substr($data,($p-8),4)); |
| 204 |
$nullsep = strpos(substr($data,$p,80), chr(0)); |
| 205 |
$icc = substr($data, ($p+$nullsep+2), ($n-($nullsep+2)) ); |
| 206 |
// Test if file is gzcompressed |
| 207 |
if (ord(substr($str, 0, 1)) == 0x1f && ord(substr($str, 1, 1)) == 0x8b) { |
| 208 |
$icc = @gzuncompress($icc); // Ignored if fails |
| 209 |
} |
| 210 |
if ($icc) { |
| 211 |
echo 'ICC profile present' . '<br />'; |
| 212 |
if (substr($icc, 36, 4) != 'acsp') { echo 'ICC profile INVALID (no acsp flag)' . '<br />'; $icc = false; } // invalid ICC profile |
| 213 |
else { |
| 214 |
$input = substr($icc, 16, 4); |
| 215 |
$output = substr($icc, 20, 4); |
| 216 |
echo 'ICC profile Input: ' . $input. '<br />'; |
| 217 |
echo 'ICC profile Output: ' . $output. '<br />'; |
| 218 |
// Ignore Color profiles for conversion to other colorspaces e.g. CMYK/Lab |
| 219 |
if ($input != 'RGB ' || $output != 'XYZ ') { $icc = false; echo 'ICC profile ignored by mPDF' . '<br />'; } |
| 220 |
} |
| 221 |
} |
| 222 |
// Convert to RGB colorspace so can use ICC Profile |
| 223 |
if ($icc) { echo 'ICC profile and Indexed colorspace both present - need to Convert to RGB colorspace so can use ICC Profile<br />'; } |
| 224 |
} |
| 225 |
|
| 226 |
|
| 227 |
} |
| 228 |
} |
| 229 |
echo 'PNG Image parsed on second pass' . '<br />'; |
| 230 |
|
| 231 |
// SECOND PASS |
| 232 |
imagealphablending($im, false); |
| 233 |
imagesavealpha($im, false); |
| 234 |
imageinterlace($im, false); |
| 235 |
ob_start(); |
| 236 |
$check = @imagepng($im); |
| 237 |
if (!$check) { echo 'Error creating temporary image object whilst using GD library to parse PNG image' . '<br />'; } |
| 238 |
$data = ob_get_contents(); |
| 239 |
ob_end_clean(); |
| 240 |
if (!$data) { echo 'Error parsing temporary file image object created with GD library to parse PNG image' . '<br />'; } |
| 241 |
imagedestroy($im); |
| 242 |
|
| 243 |
|
| 244 |
//Check signature |
| 245 |
if(substr($data,0,8)!=chr(137).'PNG'.chr(13).chr(10).chr(26).chr(10)) { |
| 246 |
echo 'Error parsing PNG identifier<br />'; exit; |
| 247 |
} |
| 248 |
//Read header chunk |
| 249 |
if(substr($data,12,4)!='IHDR') { |
| 250 |
echo 'Incorrect PNG file (no IHDR block found)<br />'; exit; |
| 251 |
} |
| 252 |
|
| 253 |
$w=_fourbytes2int(substr($data,16,4)); |
| 254 |
$h=_fourbytes2int(substr($data,20,4)); |
| 255 |
$bpc=ord(substr($data,24,1)); |
| 256 |
$errpng = false; |
| 257 |
$pngalpha = false; |
| 258 |
$channels = 0; |
| 259 |
|
| 260 |
echo 'Width: ' .$w . '<br />'; |
| 261 |
echo 'Height: ' .$h . '<br />'; |
| 262 |
echo 'BPC (bits per channel): ' .$bpc . '<br />'; |
| 263 |
|
| 264 |
$ct=ord(substr($data,25,1)); |
| 265 |
if($ct==0) { $colspace='DeviceGray'; $channels = 1; } |
| 266 |
elseif($ct==2) { $colspace='DeviceRGB'; $channels = 3; } |
| 267 |
elseif($ct==3) { $colspace='Indexed'; $channels = 1; } |
| 268 |
elseif($ct==4) { $colspace='DeviceGray'; $channels = 1; $errpng = 'alpha channel'; $pngalpha = true; } |
| 269 |
else { $colspace='DeviceRGB'; $channels = 3; $errpng = 'alpha channel'; $pngalpha = true; } |
| 270 |
|
| 271 |
echo 'Colorspace: ' . $colspace. '<br />'; |
| 272 |
echo 'Channels: ' . $channels. '<br />'; |
| 273 |
if ($pngalpha) echo 'Alpha channel detected'. '<br />'; |
| 274 |
|
| 275 |
if ($ct < 4 && strpos($data,'tRNS')!==false) { echo 'Transparency detected'. '<br />'; $errpng = 'transparency'; $pngalpha = true;} |
| 276 |
|
| 277 |
if ($ct == 3 && strpos($data,'iCCP')!==false) { echo 'Indexed plus ICC'. '<br />'; $errpng = 'indexed plus ICC'; } |
| 278 |
|
| 279 |
if(ord(substr($data,26,1))!=0) { echo 'compression method not set to zero<br />'; $errpng = 'compression method'; } // only 0 should be specified |
| 280 |
if(ord(substr($data,27,1))!=0) { echo 'filter method not set to zero<br />'; $errpng = 'filter method'; } // only 0 should be specified |
| 281 |
if(ord(substr($data,28,1))!=0) { echo 'interlaced file not set to zero<br />'; $errpng = 'interlaced file'; } |
| 282 |
|
| 283 |
$j = strpos($data,'pHYs'); |
| 284 |
if ($j) { |
| 285 |
//Read resolution |
| 286 |
$unitSp=ord(substr($data,($j+12),1)); |
| 287 |
if ($unitSp == 1) { |
| 288 |
$ppUx=_fourbytes2int(substr($data,($j+4),4)); // horizontal pixels per meter, usually set to zero |
| 289 |
$ppUx=round($ppUx/1000 *25.4); |
| 290 |
} |
| 291 |
echo 'Resolution ppUx: ' . $ppUx. '<br />'; |
| 292 |
} |
| 293 |
|
| 294 |
//Gamma correction |
| 295 |
$gamma_correction = 0; |
| 296 |
$gAMA = 0; |
| 297 |
$j = strpos($data,'gAMA'); |
| 298 |
if ($j && strpos($data,'sRGB')===false) { // sRGB colorspace - overrides gAMA |
| 299 |
$gAMA=_fourbytes2int(substr($data,($j+4),4)); // Gamma value times 100000 |
| 300 |
$gAMA /= 100000; |
| 301 |
|
| 302 |
} |
| 303 |
|
| 304 |
if ($gAMA) { $gamma_correction = 1/$gAMA; } |
| 305 |
|
| 306 |
// Don't need to apply gamma correction if == default i.e. 2.2 |
| 307 |
if ($gamma_correction > 2.15 && $gamma_correction < 2.25) { $gamma_correction = 0; } |
| 308 |
|
| 309 |
if ($gamma_correction) { echo 'Gamma correction detected'. '<br />'; } |
| 310 |
|
| 311 |
// NOT supported at present |
| 312 |
if (strpos($data,'sRGB')!==false) echo 'sRGB colorspace - NOT supported at present'. '<br />'; |
| 313 |
if (strpos($data,'cHRM')!==false) echo 'Chromaticity and Whitepoint - NOT supported at present'. '<br />'; |
| 314 |
|
| 315 |
} |
| 316 |
|
| 317 |
else { // PNG image with no need to convert alpha channels, bpc <> 8 etc. |
| 318 |
//Scan chunks looking for palette, transparency and image data |
| 319 |
$pal=''; |
| 320 |
$trns=''; |
| 321 |
$pngdata=''; |
| 322 |
$icc = false; |
| 323 |
$p = 33; |
| 324 |
do { |
| 325 |
$n=_fourbytes2int(substr($data,$p,4)); $p += 4; |
| 326 |
$type=substr($data,$p,4); $p += 4; |
| 327 |
if ($type=='PLTE') { |
| 328 |
//Read palette |
| 329 |
$pal=substr($data,$p,$n); $p += $n; |
| 330 |
$p += 4; |
| 331 |
} |
| 332 |
else if($type=='tRNS') { |
| 333 |
//Read transparency info |
| 334 |
$t=substr($data,$p,$n); $p += $n; |
| 335 |
if ($ct==0) $trns=array(ord(substr($t,1,1))); |
| 336 |
else if ($ct==2) $trns=array(ord(substr($t,1,1)),ord(substr($t,3,1)),ord(substr($t,5,1))); |
| 337 |
else { |
| 338 |
$pos=strpos($t,chr(0)); |
| 339 |
if(is_int($pos)) $trns=array($pos); |
| 340 |
} |
| 341 |
$p += 4; |
| 342 |
} |
| 343 |
else if ($type=='IDAT') { |
| 344 |
$pngdata.=substr($data,$p,$n); $p += $n; |
| 345 |
$p += 4; |
| 346 |
} |
| 347 |
else if ($type=='iCCP') { |
| 348 |
$nullsep = strpos(substr($data,$p,80), chr(0)); |
| 349 |
$icc = substr($data, ($p+$nullsep+2), ($n-($nullsep+2)) ); |
| 350 |
// Test if file is gzcompressed |
| 351 |
if (ord(substr($str, 0, 1)) == 0x1f && ord(substr($str, 1, 1)) == 0x8b) { |
| 352 |
$icc = @gzuncompress($icc); // Ignored if fails |
| 353 |
} |
| 354 |
if ($icc) { |
| 355 |
echo 'ICC profile present' . '<br />'; |
| 356 |
if (substr($icc, 36, 4) != 'acsp') { echo 'ICC profile INVALID (no acsp flag)' . '<br />'; $icc = false; } // invalid ICC profile |
| 357 |
else { |
| 358 |
$input = substr($icc, 16, 4); |
| 359 |
$output = substr($icc, 20, 4); |
| 360 |
echo 'ICC profile Input: ' . $input. '<br />'; |
| 361 |
echo 'ICC profile Output: ' . $output. '<br />'; |
| 362 |
// Ignore Color profiles for conversion to other colorspaces e.g. CMYK/Lab |
| 363 |
if ($input != 'RGB ' || $output != 'XYZ ') { $icc = false; echo 'ICC profile ignored by mPDF' . '<br />'; } |
| 364 |
} |
| 365 |
} |
| 366 |
$p += $n; |
| 367 |
$p += 4; |
| 368 |
} |
| 369 |
|
| 370 |
|
| 371 |
else if($type=='IEND') { break; } |
| 372 |
else if (preg_match('/[a-zA-Z]{4}/',$type)) { $p += $n+4; } |
| 373 |
else { echo 'Error parsing PNG image data<br />'; } |
| 374 |
} |
| 375 |
while($n); |
| 376 |
if (!$pngdata) { echo 'Error parsing PNG image data - no IDAT data found<br />';} |
| 377 |
if ($colspace=='Indexed' && empty($pal)) { echo 'Error parsing PNG image data - missing colour palette<br />'; } |
| 378 |
echo 'PNG Image parsed directly' . '<br />'; |
| 379 |
|
| 380 |
} |
| 381 |
|
| 382 |
|
| 383 |
} |
| 384 |
|
| 385 |
// GIF |
| 386 |
else if ($type == 'gif') { |
| 387 |
} |
| 388 |
|
| 389 |
// BMP (Windows Bitmap) |
| 390 |
else if ($type == 'bmp') { |
| 391 |
} |
| 392 |
// WMF |
| 393 |
else if ($type == 'wmf') { |
| 394 |
} |
| 395 |
// UNKNOWN TYPE - try GD imagecreatefromstring |
| 396 |
else { |
| 397 |
if (function_exists('gd_info')) { $gd = gd_info(); } |
| 398 |
else {$gd = array(); } |
| 399 |
if (isset($gd['PNG Support']) && $gd['PNG Support']) { |
| 400 |
$im = @imagecreatefromstring($data); |
| 401 |
if ($im) { echo 'Image type not recognised, but image created from file using GD imagecreate' . '<br />'; } |
| 402 |
else { echo 'Error parsing image file - image type not recognised, and not supported by GD imagecreate' . '<br />'; } |
| 403 |
} |
| 404 |
} |
| 405 |
|
| 406 |
|
| 407 |
exit; |
| 408 |
|
| 409 |
//============================================================== |
| 410 |
|
| 411 |
function _fourbytes2int($s) { |
| 412 |
//Read a 4-byte integer from string |
| 413 |
return (ord($s[0])<<24) + (ord($s[1])<<16) + (ord($s[2])<<8) + ord($s[3]); |
| 414 |
} |
| 415 |
|
| 416 |
function _twobytes2int($s) { // equivalent to _get_ushort |
| 417 |
//Read a 2-byte integer from string |
| 418 |
return (ord(substr($s, 0, 1))<<8) + ord(substr($s, 1, 1)); |
| 419 |
} |
| 420 |
|
| 421 |
function _jpgHeaderFromString(&$data) { |
| 422 |
$p = 4; |
| 423 |
$p += _twobytes2int(substr($data, $p, 2)); // Length of initial marker block |
| 424 |
$marker = substr($data, $p, 2); |
| 425 |
while($marker != chr(255).chr(192) && $marker != chr(255).chr(194) && $p<strlen($data)) { |
| 426 |
// Start of frame marker (FFC0) or (FFC2) mPDF 4.4.004 |
| 427 |
$p += (_twobytes2int(substr($data, $p+2, 2))) + 2; // Length of marker block |
| 428 |
$marker = substr($data, $p, 2); |
| 429 |
} |
| 430 |
if ($marker != chr(255).chr(192) && $marker != chr(255).chr(194)) { return false; } |
| 431 |
return substr($data, $p+2, 10); |
| 432 |
} |
| 433 |
|
| 434 |
function _jpgDataFromHeader($hdr) { |
| 435 |
$bpc = ord(substr($hdr, 2, 1)); |
| 436 |
if (!$bpc) { $bpc = 8; } |
| 437 |
$h = _twobytes2int(substr($hdr, 3, 2)); |
| 438 |
$w = _twobytes2int(substr($hdr, 5, 2)); |
| 439 |
$channels = ord(substr($hdr, 7, 1)); |
| 440 |
if ($channels==3) { $colspace='DeviceRGB'; } |
| 441 |
elseif($channels==4) { $colspace='DeviceCMYK'; } |
| 442 |
else { $colspace='DeviceGray'; } |
| 443 |
return array($w, $h, $colspace, $bpc, $channels); |
| 444 |
} |
| 445 |
|
| 446 |
function file_get_contents_by_curl($url, &$data) { |
| 447 |
$timeout = 5; |
| 448 |
$ch = curl_init($url); |
| 449 |
curl_setopt($ch, CURLOPT_HEADER, 0); |
| 450 |
curl_setopt($ch, CURLOPT_NOBODY, 0); |
| 451 |
curl_setopt ( $ch , CURLOPT_RETURNTRANSFER , 1 ); |
| 452 |
curl_setopt ( $ch , CURLOPT_CONNECTTIMEOUT , $timeout ); |
| 453 |
$data = curl_exec($ch); |
| 454 |
curl_close($ch); |
| 455 |
} |
| 456 |
|
| 457 |
|
| 458 |
function file_get_contents_by_socket($url, &$data) { |
| 459 |
// mPDF 5.7.3 |
| 460 |
$timeout = 1; |
| 461 |
$p = parse_url($url); |
| 462 |
$file = $p['path']; |
| 463 |
if ($p['scheme']=='https') { |
| 464 |
$prefix = 'ssl://'; |
| 465 |
$port = ($p['port'] ? $p['port'] : 443); |
| 466 |
} |
| 467 |
else { |
| 468 |
$prefix = ''; |
| 469 |
$port = ($p['port'] ? $p['port'] : 80); |
| 470 |
} |
| 471 |
if ($p['query']) { $file .= '?'.$p['query']; } |
| 472 |
if(!($fh = @fsockopen($prefix.$p['host'], $port, $errno, $errstr, $timeout))) { return false; } |
| 473 |
|
| 474 |
$getstring = |
| 475 |
"GET ".$file." HTTP/1.0 \r\n" . |
| 476 |
"Host: ".$p['host']." \r\n" . |
| 477 |
"Connection: close\r\n\r\n"; |
| 478 |
fwrite($fh, $getstring); |
| 479 |
// Get rid of HTTP header |
| 480 |
$s = fgets($fh, 1024); |
| 481 |
if (!$s) { return false; } |
| 482 |
$httpheader .= $s; |
| 483 |
while (!feof($fh)) { |
| 484 |
$s = fgets($fh, 1024); |
| 485 |
if ( $s == "\r\n" ) { break; } |
| 486 |
} |
| 487 |
$data = ''; |
| 488 |
while (!feof($fh)) { |
| 489 |
$data .= fgets($fh, 1024); |
| 490 |
} |
| 491 |
fclose($fh); |
| 492 |
} |
| 493 |
|
| 494 |
//============================================================== |
| 495 |
|
| 496 |
function _imageTypeFromString(&$data) { |
| 497 |
$type = ''; |
| 498 |
if (substr($data, 6, 4)== 'JFIF' || substr($data, 6, 4)== 'Exif' || substr($data, 0, 2)== chr(255).chr(216)) { // 0xFF 0xD8 |
| 499 |
$type = 'jpeg'; |
| 500 |
} |
| 501 |
else if (substr($data, 0, 6)== "GIF87a" || substr($data, 0, 6)== "GIF89a") { |
| 502 |
$type = 'gif'; |
| 503 |
} |
| 504 |
else if (substr($data, 0, 8)== chr(137).'PNG'.chr(13).chr(10).chr(26).chr(10)) { |
| 505 |
$type = 'png'; |
| 506 |
} |
| 507 |
/*-- IMAGES-WMF --*/ |
| 508 |
else if (substr($data, 0, 4)== chr(215).chr(205).chr(198).chr(154)) { |
| 509 |
$type = 'wmf'; |
| 510 |
} |
| 511 |
/*-- END IMAGES-WMF --*/ |
| 512 |
else if (preg_match('/<svg.*<\/svg>/is',$data)) { |
| 513 |
$type = 'svg'; |
| 514 |
} |
| 515 |
// BMP images |
| 516 |
else if (substr($data, 0, 2)== "BM") { |
| 517 |
$type = 'bmp'; |
| 518 |
} |
| 519 |
return $type; |
| 520 |
} |
| 521 |
|
