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phpthumb.functions.php
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phpthumb.functions.php
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<?php
//////////////////////////////////////////////////////////////
// phpThumb() by James Heinrich <info@silisoftware.com> //
// available at http://phpthumb.sourceforge.net //
// and/or https://github.com/JamesHeinrich/phpThumb //
//////////////////////////////////////////////////////////////
/// //
// phpthumb.functions.php - general support functions //
// ///
//////////////////////////////////////////////////////////////
class phpthumb_functions {
public static function is_windows() {
return (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN');
}
public static function user_function_exists($functionname) {
if (function_exists('get_defined_functions')) {
static $get_defined_functions = array();
if (empty($get_defined_functions)) {
$get_defined_functions = get_defined_functions();
}
return in_array(strtolower($functionname), $get_defined_functions['user']);
}
return function_exists($functionname);
}
public static function builtin_function_exists($functionname) {
if (function_exists('get_defined_functions')) {
static $get_defined_functions = array();
if (empty($get_defined_functions)) {
$get_defined_functions = get_defined_functions();
}
return in_array(strtolower($functionname), $get_defined_functions['internal']);
}
return function_exists($functionname);
}
public static function version_compare_replacement_sub($version1, $version2, $operator='') {
// If you specify the third optional operator argument, you can test for a particular relationship.
// The possible operators are: <, lt, <=, le, >, gt, >=, ge, ==, =, eq, !=, <>, ne respectively.
// Using this argument, the function will return 1 if the relationship is the one specified by the operator, 0 otherwise.
// If a part contains special version strings these are handled in the following order:
// (any string not found in this list) < (dev) < (alpha = a) < (beta = b) < (RC = rc) < (#) < (pl = p)
static $versiontype_lookup = array();
if (empty($versiontype_lookup)) {
$versiontype_lookup['dev'] = 10001;
$versiontype_lookup['a'] = 10002;
$versiontype_lookup['alpha'] = 10002;
$versiontype_lookup['b'] = 10003;
$versiontype_lookup['beta'] = 10003;
$versiontype_lookup['RC'] = 10004;
$versiontype_lookup['rc'] = 10004;
$versiontype_lookup['#'] = 10005;
$versiontype_lookup['pl'] = 10006;
$versiontype_lookup['p'] = 10006;
}
$version1 = (isset($versiontype_lookup[$version1]) ? $versiontype_lookup[$version1] : $version1);
$version2 = (isset($versiontype_lookup[$version2]) ? $versiontype_lookup[$version2] : $version2);
switch ($operator) {
case '<':
case 'lt':
return (int) ($version1 < $version2);
break;
case '<=':
case 'le':
return (int) ($version1 <= $version2);
break;
case '>':
case 'gt':
return (int) ($version1 > $version2);
break;
case '>=':
case 'ge':
return (int) ($version1 >= $version2);
break;
case '==':
case '=':
case 'eq':
return (int) ($version1 == $version2);
break;
case '!=':
case '<>':
case 'ne':
return (int) ($version1 != $version2);
break;
}
if ($version1 == $version2) {
return 0;
} elseif ($version1 < $version2) {
return -1;
}
return 1;
}
public static function version_compare_replacement($version1, $version2, $operator='') {
if (function_exists('version_compare')) {
// built into PHP v4.1.0+
return version_compare($version1, $version2, $operator);
}
// The function first replaces _, - and + with a dot . in the version strings
$version1 = strtr($version1, '_-+', '...');
$version2 = strtr($version2, '_-+', '...');
// and also inserts dots . before and after any non number so that for example '4.3.2RC1' becomes '4.3.2.RC.1'.
// Then it splits the results like if you were using explode('.',$ver). Then it compares the parts starting from left to right.
$version1 = preg_replace('#([\d]+)([A-Z]+)([\d]+)#i', '$1.$2.$3', $version1);
$version2 = preg_replace('#([\d]+)([A-Z]+)([\d]+)#i', '$1.$2.$3', $version2);
$parts1 = explode('.', $version1);
$parts2 = explode('.', $version1);
$parts_count = max(count($parts1), count($parts2));
for ($i = 0; $i < $parts_count; $i++) {
$comparison = self::version_compare_replacement_sub($version1, $version2, $operator);
if ($comparison != 0) {
return $comparison;
}
}
return 0;
}
public static function escapeshellarg_replacement($arg) {
if (function_exists('escapeshellarg') && !self::FunctionIsDisabled('escapeshellarg')) {
return escapeshellarg($arg);
}
return '\''.str_replace('\'', '\\\'', $arg).'\'';
}
public static function phpinfo_array() {
static $phpinfo_array = array();
if (empty($phpinfo_array)) {
ob_start();
phpinfo();
$phpinfo = ob_get_contents();
ob_end_clean();
$phpinfo_array = explode("\n", $phpinfo);
}
return $phpinfo_array;
}
public static function exif_info() {
static $exif_info = array();
if (empty($exif_info)) {
// based on code by johnschaefer at gmx dot de
// from PHP help on gd_info()
$exif_info = array(
'EXIF Support' => '',
'EXIF Version' => '',
'Supported EXIF Version' => '',
'Supported filetypes' => ''
);
$phpinfo_array = self::phpinfo_array();
foreach ($phpinfo_array as $line) {
$line = trim(strip_tags($line));
foreach ($exif_info as $key => $value) {
if (strpos($line, $key) === 0) {
$newvalue = trim(str_replace($key, '', $line));
$exif_info[$key] = $newvalue;
}
}
}
}
return $exif_info;
}
public static function ImageTypeToMIMEtype($imagetype) {
if (function_exists('image_type_to_mime_type') && ($imagetype >= 1) && ($imagetype <= 19)) {
// PHP v4.3.0+
return image_type_to_mime_type($imagetype);
}
static $image_type_to_mime_type = array(
1 => 'image/gif', // IMAGETYPE_GIF
2 => 'image/jpeg', // IMAGETYPE_JPEG
3 => 'image/png', // IMAGETYPE_PNG
4 => 'application/x-shockwave-flash', // IMAGETYPE_SWF
5 => 'image/psd', // IMAGETYPE_PSD
6 => 'image/bmp', // IMAGETYPE_BMP
7 => 'image/tiff', // IMAGETYPE_TIFF_II (intel byte order)
8 => 'image/tiff', // IMAGETYPE_TIFF_MM (motorola byte order)
9 => 'application/octet-stream', // IMAGETYPE_JPC
10 => 'image/jp2', // IMAGETYPE_JP2
11 => 'application/octet-stream', // IMAGETYPE_JPX
12 => 'application/octet-stream', // IMAGETYPE_JB2
13 => 'application/x-shockwave-flash', // IMAGETYPE_SWC
14 => 'image/iff', // IMAGETYPE_IFF
15 => 'image/vnd.wap.wbmp', // IMAGETYPE_WBMP
16 => 'image/xbm', // IMAGETYPE_XBM
17 => 'image/x-icon', // IMAGETYPE_ICO
18 => 'image/webp', // IMAGETYPE_WEBP
19 => 'image/avif', // IMAGETYPE_AVIF
'gif' => 'image/gif', // IMAGETYPE_GIF
'jpg' => 'image/jpeg', // IMAGETYPE_JPEG
'jpeg' => 'image/jpeg', // IMAGETYPE_JPEG
'png' => 'image/png', // IMAGETYPE_PNG
'bmp' => 'image/bmp', // IMAGETYPE_BMP
'ico' => 'image/x-icon', // IMAGETYPE_ICO
'webp' => 'image/webp', // IMAGETYPE_WEBP
'avif' => 'image/avif', // IMAGETYPE_AVIF
);
return (isset($image_type_to_mime_type[$imagetype]) ? $image_type_to_mime_type[$imagetype] : false);
}
public static function TranslateWHbyAngle($width, $height, $angle) {
if (($angle % 180) == 0) {
return array($width, $height);
}
$newwidth = (abs(sin(deg2rad($angle))) * $height) + (abs(cos(deg2rad($angle))) * $width);
$newheight = (abs(sin(deg2rad($angle))) * $width) + (abs(cos(deg2rad($angle))) * $height);
return array($newwidth, $newheight);
}
public static function HexCharDisplay($string) {
$len = strlen($string);
$output = '';
for ($i = 0; $i < $len; $i++) {
$output .= ' 0x'.str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT);
}
return $output;
}
public static function IsHexColor($HexColorString) {
return preg_match('#^[0-9A-F]{6}$#i', (string)$HexColorString);
}
public static function ImageColorAllocateAlphaSafe(&$gdimg_hexcolorallocate, $R, $G, $B, $alpha=false) {
if (self::version_compare_replacement(PHP_VERSION, '4.3.2', '>=') && ($alpha !== false)) {
return imagecolorallocatealpha($gdimg_hexcolorallocate, round($R), round($G), round($B), (int) $alpha);
} else {
return imagecolorallocate($gdimg_hexcolorallocate, $R, $G, $B);
}
}
public static function ImageHexColorAllocate(&$gdimg_hexcolorallocate, $HexColorString, $dieOnInvalid=false, $alpha=false) {
if (!is_resource($gdimg_hexcolorallocate) && !(is_object($gdimg_hexcolorallocate) && $gdimg_hexcolorallocate instanceOf \GdImage)) {
die('$gdimg_hexcolorallocate is not a GD resource in ImageHexColorAllocate()');
}
if (self::IsHexColor($HexColorString)) {
$R = hexdec(substr($HexColorString, 0, 2));
$G = hexdec(substr($HexColorString, 2, 2));
$B = hexdec(substr($HexColorString, 4, 2));
return self::ImageColorAllocateAlphaSafe($gdimg_hexcolorallocate, $R, $G, $B, $alpha);
}
if ($dieOnInvalid) {
die('Invalid hex color string: "'.$HexColorString.'"');
}
return imagecolorallocate($gdimg_hexcolorallocate, 0x00, 0x00, 0x00);
}
public static function HexColorXOR($hexcolor) {
return strtoupper(str_pad(dechex(~hexdec($hexcolor) & 0xFFFFFF), 6, '0', STR_PAD_LEFT));
}
public static function GetPixelColor(&$img, $x, $y) {
if (!is_resource($img) && !(is_object($img) && $img instanceOf \GdImage)) {
return false;
}
return @imagecolorsforindex($img, @imagecolorat($img, $x, $y));
}
public static function PixelColorDifferencePercent($currentPixel, $targetPixel) {
$diff = 0;
foreach ($targetPixel as $channel => $currentvalue) {
$diff = max($diff, (max($currentPixel[$channel], $targetPixel[$channel]) - min($currentPixel[$channel], $targetPixel[$channel])) / 255);
}
return $diff * 100;
}
public static function GrayscaleValue($r, $g, $b) {
return round(($r * 0.30) + ($g * 0.59) + ($b * 0.11));
}
public static function GrayscalePixel($OriginalPixel) {
$gray = self::GrayscaleValue($OriginalPixel[ 'red'], $OriginalPixel[ 'green'], $OriginalPixel[ 'blue']);
return array('red'=>$gray, 'green'=>$gray, 'blue'=>$gray);
}
public static function GrayscalePixelRGB($rgb) {
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
return ($r * 0.299) + ($g * 0.587) + ($b * 0.114);
}
public static function ScaleToFitInBox($width, $height, $maxwidth=null, $maxheight=null, $allow_enlarge=true, $allow_reduce=true) {
$maxwidth = (null === $maxwidth ? $width : $maxwidth);
$maxheight = (null === $maxheight ? $height : $maxheight);
$scale_x = 1;
$scale_y = 1;
if (($width > $maxwidth) || ($width < $maxwidth)) {
$scale_x = ($maxwidth / $width);
}
if (($height > $maxheight) || ($height < $maxheight)) {
$scale_y = ($maxheight / $height);
}
$scale = min($scale_x, $scale_y);
if (!$allow_enlarge) {
$scale = min($scale, 1);
}
if (!$allow_reduce) {
$scale = max($scale, 1);
}
return $scale;
}
public static function ImageCopyResampleBicubic($dst_img, $src_img, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h) {
// ron at korving dot demon dot nl
// http://www.php.net/imagecopyresampled
$scaleX = ($src_w - 1) / $dst_w;
$scaleY = ($src_h - 1) / $dst_h;
$scaleX2 = $scaleX / 2.0;
$scaleY2 = $scaleY / 2.0;
$isTrueColor = imageistruecolor($src_img);
for ($y = $src_y; $y < $src_y + $dst_h; $y++) {
$sY = $y * $scaleY;
$siY = (int) $sY;
$siY2 = (int) $sY + $scaleY2;
for ($x = $src_x; $x < $src_x + $dst_w; $x++) {
$sX = $x * $scaleX;
$siX = (int) $sX;
$siX2 = (int) $sX + $scaleX2;
if ($isTrueColor) {
$c1 = imagecolorat($src_img, $siX, $siY2);
$c2 = imagecolorat($src_img, $siX, $siY);
$c3 = imagecolorat($src_img, $siX2, $siY2);
$c4 = imagecolorat($src_img, $siX2, $siY);
$r = (( $c1 + $c2 + $c3 + $c4 ) >> 2) & 0xFF0000;
$g = ((($c1 & 0x00FF00) + ($c2 & 0x00FF00) + ($c3 & 0x00FF00) + ($c4 & 0x00FF00)) >> 2) & 0x00FF00;
$b = ((($c1 & 0x0000FF) + ($c2 & 0x0000FF) + ($c3 & 0x0000FF) + ($c4 & 0x0000FF)) >> 2);
} else {
$c1 = imagecolorsforindex($src_img, imagecolorat($src_img, $siX, $siY2));
$c2 = imagecolorsforindex($src_img, imagecolorat($src_img, $siX, $siY));
$c3 = imagecolorsforindex($src_img, imagecolorat($src_img, $siX2, $siY2));
$c4 = imagecolorsforindex($src_img, imagecolorat($src_img, $siX2, $siY));
$r = ($c1['red'] + $c2['red'] + $c3['red'] + $c4['red'] ) << 14;
$g = ($c1['green'] + $c2['green'] + $c3['green'] + $c4['green']) << 6;
$b = ($c1['blue'] + $c2['blue'] + $c3['blue'] + $c4['blue'] ) >> 2;
}
imagesetpixel($dst_img, $dst_x + $x - $src_x, $dst_y + $y - $src_y, $r+$g+$b);
}
}
return true;
}
public static function ImageCreateFunction($x_size, $y_size) {
$ImageCreateFunction = 'imagecreate';
if (self::gd_version() >= 2.0) {
$ImageCreateFunction = 'imagecreatetruecolor';
}
if (!function_exists($ImageCreateFunction)) {
return phpthumb::ErrorImage($ImageCreateFunction.'() does not exist - no GD support?');
}
if (($x_size <= 0) || ($y_size <= 0)) {
return phpthumb::ErrorImage('Invalid image dimensions: '.$ImageCreateFunction.'('.$x_size.', '.$y_size.')');
}
return $ImageCreateFunction(round($x_size), round($y_size));
}
public static function ImageCopyRespectAlpha(&$dst_im, &$src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $opacity_pct=100) {
$opacipct = $opacity_pct / 100;
for ($x = $src_x; $x < $src_w; $x++) {
for ($y = $src_y; $y < $src_h; $y++) {
$RealPixel = self::GetPixelColor($dst_im, $dst_x + $x, $dst_y + $y);
$OverlayPixel = self::GetPixelColor($src_im, $x, $y);
$alphapct = $OverlayPixel['alpha'] / 127;
$overlaypct = (1 - $alphapct) * $opacipct;
$newcolor = self::ImageColorAllocateAlphaSafe(
$dst_im,
$RealPixel['alpha'] == 127 ? $OverlayPixel['red'] : ($OverlayPixel['alpha'] == 127 ? $RealPixel['red'] : (round($RealPixel['red'] * (1 - $overlaypct) + ($OverlayPixel['red'] * $overlaypct)))),
$RealPixel['alpha'] == 127 ? $OverlayPixel['green'] : ($OverlayPixel['alpha'] == 127 ? $RealPixel['green'] : (round($RealPixel['green'] * (1 - $overlaypct) + ($OverlayPixel['green'] * $overlaypct)))),
$RealPixel['alpha'] == 127 ? $OverlayPixel['blue'] : ($OverlayPixel['alpha'] == 127 ? $RealPixel['blue'] : (round($RealPixel['blue'] * (1 - $overlaypct) + ($OverlayPixel['blue'] * $overlaypct)))),
// 0);
min([$RealPixel['alpha'], floor($OverlayPixel['alpha'] * $opacipct)])
);
imagesetpixel($dst_im, $dst_x + $x, $dst_y + $y, $newcolor);
}
}
return true;
}
public static function ProportionalResize($old_width, $old_height, $new_width=false, $new_height=false) {
$old_aspect_ratio = $old_width / $old_height;
if (($new_width === false) && ($new_height === false)) {
return false;
} elseif ($new_width === false) {
$new_width = $new_height * $old_aspect_ratio;
} elseif ($new_height === false) {
$new_height = $new_width / $old_aspect_ratio;
}
$new_aspect_ratio = $new_width / $new_height;
if ($new_aspect_ratio == $old_aspect_ratio) {
// great, done
} elseif ($new_aspect_ratio < $old_aspect_ratio) {
// limited by width
$new_height = $new_width / $old_aspect_ratio;
} elseif ($new_aspect_ratio > $old_aspect_ratio) {
// limited by height
$new_width = $new_height * $old_aspect_ratio;
}
return array(
(int) round($new_width),
(int) round($new_height)
);
}
public static function FunctionIsDisabled($function) {
static $DisabledFunctions = null;
if (null === $DisabledFunctions) {
$disable_functions_local = explode(',', strtolower(@ini_get('disable_functions')));
$disable_functions_global = explode(',', strtolower(@get_cfg_var('disable_functions')));
foreach ($disable_functions_local as $key => $value) {
$DisabledFunctions[trim($value)] = 'local';
}
foreach ($disable_functions_global as $key => $value) {
$DisabledFunctions[trim($value)] = 'global';
}
if (@ini_get('safe_mode')) {
$DisabledFunctions['shell_exec'] = 'local';
$DisabledFunctions['set_time_limit'] = 'local';
}
}
return isset($DisabledFunctions[strtolower($function)]);
}
public static function SafeExec($command) {
static $AllowedExecFunctions = array();
if (empty($AllowedExecFunctions)) {
$AllowedExecFunctions = array('shell_exec'=>true, 'passthru'=>true, 'system'=>true, 'exec'=>true);
foreach ($AllowedExecFunctions as $key => $value) {
$AllowedExecFunctions[$key] = !self::FunctionIsDisabled($key);
}
}
$command .= ' 2>&1'; // force redirect stderr to stdout
foreach ($AllowedExecFunctions as $execfunction => $is_allowed) {
if (!$is_allowed) {
continue;
}
$returnvalue = false;
switch ($execfunction) {
case 'passthru':
case 'system':
ob_start();
$execfunction($command);
$returnvalue = ob_get_contents();
ob_end_clean();
break;
case 'exec':
$output = array();
$lastline = $execfunction($command, $output);
$returnvalue = implode("\n", $output);
break;
case 'shell_exec':
ob_start();
$returnvalue = $execfunction($command);
ob_end_clean();
break;
}
return $returnvalue;
}
return false;
}
public static function ApacheLookupURIarray($filename) {
// apache_lookup_uri() only works when PHP is installed as an Apache module.
if (PHP_SAPI == 'apache') {
//$property_exists_exists = function_exists('property_exists');
$keys = array('status', 'the_request', 'status_line', 'method', 'content_type', 'handler', 'uri', 'filename', 'path_info', 'args', 'boundary', 'no_cache', 'no_local_copy', 'allowed', 'send_bodyct', 'bytes_sent', 'byterange', 'clength', 'unparsed_uri', 'mtime', 'request_time');
if ($apacheLookupURIobject = @apache_lookup_uri($filename)) {
$apacheLookupURIarray = array();
foreach ($keys as $key) {
$apacheLookupURIarray[$key] = @$apacheLookupURIobject->$key;
}
return $apacheLookupURIarray;
}
}
return false;
}
public static function gd_is_bundled() {
static $isbundled = null;
if (null === $isbundled) {
$gd_info = gd_info();
$isbundled = (strpos($gd_info['GD Version'], 'bundled') !== false);
}
return $isbundled;
}
public static function gd_version($fullstring=false) {
static $cache_gd_version = array();
if (empty($cache_gd_version)) {
$gd_info = gd_info();
if (preg_match('#bundled \((.+)\)$#i', $gd_info['GD Version'], $matches)) {
$cache_gd_version[1] = $gd_info['GD Version']; // e.g. "bundled (2.0.15 compatible)"
$cache_gd_version[0] = (float) $matches[1]; // e.g. "2.0" (not "bundled (2.0.15 compatible)")
} else {
$cache_gd_version[1] = $gd_info['GD Version']; // e.g. "1.6.2 or higher"
$cache_gd_version[0] = (float) substr($gd_info['GD Version'], 0, 3); // e.g. "1.6" (not "1.6.2 or higher")
}
}
return $cache_gd_version[ (int) $fullstring ];
}
public static function filesize_remote($remotefile, $timeout=10) {
$size = false;
$parsed_url = self::ParseURLbetter($remotefile);
if ($fp = @fsockopen($parsed_url['host'], $parsed_url['port'], $errno, $errstr, $timeout)) {
fwrite($fp, 'HEAD '.$parsed_url['path'].$parsed_url['query'].' HTTP/1.0'."\r\n".'Host: '.$parsed_url['host']."\r\n\r\n");
if (self::version_compare_replacement(PHP_VERSION, '4.3.0', '>=')) {
stream_set_timeout($fp, $timeout);
}
while (!feof($fp)) {
$headerline = fgets($fp, 4096);
if (preg_match('#^Content-Length: (.*)#i', $headerline, $matches)) {
$size = (int) $matches[ 1];
break;
}
}
fclose ($fp);
}
return $size;
}
public static function filedate_remote($remotefile, $timeout=10) {
$date = false;
$parsed_url = self::ParseURLbetter($remotefile);
if ($fp = @fsockopen($parsed_url['host'], $parsed_url['port'], $errno, $errstr, $timeout)) {
fwrite($fp, 'HEAD '.$parsed_url['path'].$parsed_url['query'].' HTTP/1.0'."\r\n".'Host: '.$parsed_url['host']."\r\n\r\n");
if (self::version_compare_replacement(PHP_VERSION, '4.3.0', '>=')) {
stream_set_timeout($fp, $timeout);
}
while (!feof($fp)) {
$headerline = fgets($fp, 4096);
if (preg_match('#^Last-Modified: (.*)#i', $headerline, $matches)) {
$date = strtotime($matches[1]) - date('Z');
break;
}
}
fclose ($fp);
}
return $date;
}
public static function md5_file_safe($filename) {
// md5_file() doesn't exist in PHP < 4.2.0
if (function_exists('md5_file')) {
return md5_file($filename);
}
if ($fp = @fopen($filename, 'rb')) {
$rawData = '';
do {
$buffer = fread($fp, 8192);
$rawData .= $buffer;
} while (strlen($buffer) > 0);
fclose($fp);
return md5($rawData);
}
return false;
}
public static function nonempty_min() {
$arg_list = func_get_args();
$acceptable = array();
foreach ($arg_list as $arg) {
if ($arg) {
$acceptable[] = $arg;
}
}
return min($acceptable);
}
public static function LittleEndian2String($number, $minbytes=1) {
$intstring = '';
while ($number > 0) {
$intstring .= chr($number & 255);
$number >>= 8;
}
return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
}
public static function OneOfThese() {
// return the first useful (non-empty/non-zero/non-false) value from those passed
$arg_list = func_get_args();
foreach ($arg_list as $key => $value) {
if ($value) {
return $value;
}
}
return false;
}
public static function CaseInsensitiveInArray($needle, $haystack) {
$needle = strtolower($needle);
foreach ($haystack as $key => $value) {
if (is_array($value)) {
// skip?
} elseif ($needle == strtolower($value)) {
return true;
}
}
return false;
}
public static function URLreadFsock($host, $file, &$errstr, $successonly=true, $port=-1, $timeout=10) {
if (!function_exists('fsockopen') || self::FunctionIsDisabled('fsockopen')) {
$errstr = 'URLreadFsock says: function fsockopen() unavailable';
return false;
}
$port = (int) ($port ? $port : -1); // passing anything as the $port parameter (even empty values like null, false, 0, "") will override the default -1. fsockopen uses -1 as the default port value.
//if ($fp = @fsockopen($host, $port, $errno, $errstr, $timeout)) {
if ($fp = @fsockopen((($port == 443) ? 'ssl://' : '').$host, $port, $errno, $errstr, $timeout)) { // https://github.com/JamesHeinrich/phpThumb/issues/39
$out = 'GET '.$file.' HTTP/1.0'."\r\n";
$out .= 'Host: '.$host."\r\n";
$out .= 'Connection: Close'."\r\n\r\n";
fwrite($fp, $out);
$isHeader = true;
$data_header = '';
$data_body = '';
$header_newlocation = '';
while (!feof($fp)) {
$line = fgets($fp, 1024);
if ($isHeader) {
$data_header .= $line;
} else {
$data_body .= $line;
}
if (preg_match('#^HTTP/[\\.\d]+ ([\d]+)\s*(.+)?$#i', rtrim($line), $matches)) {
list( , $errno, $errstr) = $matches;
$errno = (int) $errno;
} elseif (preg_match('#^Location: (.*)$#i', rtrim($line), $matches)) {
$header_newlocation = $matches[1];
}
if ($isHeader && ($line == "\r\n")) {
$isHeader = false;
if ($successonly) {
switch ($errno) {
case 200:
// great, continue
break;
default:
$errstr = $errno.' '.$errstr.($header_newlocation ? '; Location: '.$header_newlocation : '');
fclose($fp);
return false;
break;
}
}
}
}
fclose($fp);
return $data_body;
}
return null;
}
public static function CleanUpURLencoding($url, $queryseperator='&') {
if (!0 === stripos($url, "http") ) {
return $url;
}
$parsed_url = self::ParseURLbetter($url);
$pathelements = explode('/', (string)$parsed_url['path']);
$CleanPathElements = array();
$TranslationMatrix = array(' '=>'%20');
foreach ($pathelements as $key => $pathelement) {
$CleanPathElements[] = strtr($pathelement, $TranslationMatrix);
}
foreach ($CleanPathElements as $key => $value) {
if ($value === '') {
unset($CleanPathElements[$key]);
}
}
$queries = explode($queryseperator, (string)$parsed_url['query']);
$CleanQueries = array();
foreach ($queries as $key => $query) {
@list($param, $value) = explode('=', $query);
$CleanQueries[] = strtr($param, $TranslationMatrix).($value ? '='.strtr($value, $TranslationMatrix) : '');
}
foreach ($CleanQueries as $key => $value) {
if ($value === '') {
unset($CleanQueries[$key]);
}
}
$cleaned_url = $parsed_url['scheme'].'://';
$cleaned_url .= ($parsed_url['user'] ? $parsed_url['user'].($parsed_url['pass'] ? ':'.$parsed_url['pass'] : '').'@' : '');
$cleaned_url .= $parsed_url['host'];
$cleaned_url .= (($parsed_url['port'] && ($parsed_url['port'] != self::URLschemeDefaultPort($parsed_url['scheme']))) ? ':'.$parsed_url['port'] : '');
$cleaned_url .= '/'.implode('/', $CleanPathElements);
$cleaned_url .= (!empty($CleanQueries) ? '?'.implode($queryseperator, $CleanQueries) : '');
return $cleaned_url;
}
public static function URLschemeDefaultPort($scheme) {
static $schemePort = array(
'ftp' => 21,
'http' => 80,
'https' => 443,
);
return ((!empty($scheme) && isset($schemePort[strtolower($scheme)])) ? $schemePort[strtolower($scheme)] : null);
}
public static function ParseURLbetter($url) {
$parsedURL = @parse_url($url);
foreach (array('scheme', 'host', 'port', 'user', 'pass', 'path', 'query', 'fragment') as $key) { // ensure all possible array keys are always returned
if (!array_key_exists($key, $parsedURL)) {
$parsedURL[$key] = null;
}
}
$parsedURL['port'] = ($parsedURL['port'] ? $parsedURL['port'] : self::URLschemeDefaultPort($parsedURL['scheme']));
return $parsedURL;
}
public static function SafeURLread($url, &$error, $timeout=10, $followredirects=true) {
$error = '';
$errstr = '';
$rawData = '';
$parsed_url = self::ParseURLbetter($url);
$alreadyLookedAtURLs[trim($url)] = true;
while (true) {
$tryagain = false;
$rawData = self::URLreadFsock($parsed_url['host'], $parsed_url['path'].'?'.$parsed_url['query'], $errstr, true, $parsed_url['port'], $timeout);
if ($followredirects && preg_match('#302 [a-z ]+; Location\\: (http.*)#i', $errstr, $matches)) {
$matches[1] = trim(@$matches[1]);
if (!@$alreadyLookedAtURLs[$matches[1]]) {
// loop through and examine new URL
$error .= 'URL "'.$url.'" redirected to "'.$matches[1].'"';
$tryagain = true;
$alreadyLookedAtURLs[$matches[1]] = true;
$parsed_url = self::ParseURLbetter($matches[ 1]);
}
}
if (!$tryagain) {
break;
}
}
if ($rawData === false) {
$error .= 'Error opening "'.$url.'":'."\n\n".$errstr;
return false;
} elseif ($rawData === null) {
// fall through
$error .= 'Error opening "'.$url.'":'."\n\n".$errstr;
} else {
return $rawData;
}
if (function_exists('curl_version') && !self::FunctionIsDisabled('curl_exec')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, (bool) $followredirects);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
$rawData = curl_exec($ch);
curl_close($ch);
if (strlen($rawData) > 0) {
$error .= 'CURL succeeded ('.strlen($rawData).' bytes); ';
return $rawData;
}
$error .= 'CURL available but returned no data; ';
} else {
$error .= 'CURL unavailable; ';
}
$BrokenURLfopenPHPversions = array('4.4.2');
if (in_array(PHP_VERSION, $BrokenURLfopenPHPversions)) {
$error .= 'fopen(URL) broken in PHP v'. PHP_VERSION .'; ';
} elseif (@ini_get('allow_url_fopen')) {
$rawData = '';
$error_fopen = '';
ob_start();
if ($fp = fopen($url, 'rb')) {
do {
$buffer = fread($fp, 8192);
$rawData .= $buffer;
} while (strlen($buffer) > 0);
fclose($fp);
} else {
$error_fopen .= trim(strip_tags(ob_get_contents()));
}
ob_end_clean();
$error .= $error_fopen;
if (!$error_fopen) {
$error .= '; "allow_url_fopen" succeeded ('.strlen($rawData).' bytes); ';
return $rawData;
}
$error .= '; "allow_url_fopen" enabled but returned no data ('.$error_fopen.'); ';
} else {
$error .= '"allow_url_fopen" disabled; ';
}
return false;
}
public static function EnsureDirectoryExists($dirname, $mask=0755) {
// https://www.php.net/manual/en/ini.core.php#ini.open-basedir says:
// "Under Windows, separate the directories with a semicolon. On all other systems, separate the directories with a colon."
$config_open_basedir = ini_get('open_basedir');
$startoffset = 2; // 1-based counting, first element to left of first directory separator will either be drive letter (Windows) or blank (unix). May be overridden below.
if (self::is_windows()) {
$delimiter = ';';
$case_insensitive_pathname = true;
// unix OSs will always use "/", some Windows configurations you may find "/" used interchangeably with the OS-correct "\", so standardize for ease of comparison
$dirname = str_replace('/', DIRECTORY_SEPARATOR, $dirname);
$config_open_basedir = str_replace('/', DIRECTORY_SEPARATOR, $config_open_basedir);
} else {
$delimiter = ':';
$case_insensitive_pathname = false;
}
do {
/*
\\3930K\WEBROOT\trainspotted.com\phpThumb/_cache/\6\6f // starts off with mismatched directory separators
\\3930K\WEBROOT\trainspotted.com\phpThumb\_cache\\6\6f // gets multiple directory separators in a row that we want to strip out (being sure not to replace the UNC double-slash at the beginning)
*/
if ($doubleslash_offset = strpos($dirname, DIRECTORY_SEPARATOR.DIRECTORY_SEPARATOR, 1)) {
$dirname = substr($dirname, 0, $doubleslash_offset).substr($dirname, $doubleslash_offset + 1);
}
} while ($doubleslash_offset !== false);
$open_basedirs = explode($delimiter, $config_open_basedir);
foreach ($open_basedirs as $key => $open_basedir) {
if (preg_match('#^'.preg_quote($open_basedir).'#'.($case_insensitive_pathname ? 'i' : ''), $dirname) && (strlen($dirname) > strlen($open_basedir))) {
$startoffset = substr_count($open_basedir, DIRECTORY_SEPARATOR) + 1;
break;
}
}
$directory_elements = explode(DIRECTORY_SEPARATOR, $dirname);
$endoffset = count($directory_elements);
for ($i = $startoffset; $i <= $endoffset; $i++) {
$test_directory = implode(DIRECTORY_SEPARATOR, array_slice($directory_elements, 0, $i));
if (!$test_directory) {
continue;
}
if (!@is_dir($test_directory)) {
if (substr($test_directory, 0, 2) == '\\\\') {
// UNC path
if (count(explode('\\', $test_directory)) <= 4) {
// 1,2 = UNC starting slashes
// 3 = hostname; skip further checks
// 4 = sharename; skip further checks
// 5+ = real subdiretories
continue;
}
}
if (@file_exists($test_directory)) {
// directory name already exists as a file
return false;
}
@mkdir($test_directory, $mask);
@chmod($test_directory, $mask);
clearstatcache();
if (!@is_dir($test_directory) || !@is_writable($test_directory)) {
return false;
}
}
}
return true;
}
public static function GetAllFilesInSubfolders($dirname) {
$AllFiles = array();
$dirname = rtrim(realpath($dirname), '/\\');
if ($dirhandle = @opendir($dirname)) {
while (($file = readdir($dirhandle)) !== false) {
$fullfilename = $dirname.DIRECTORY_SEPARATOR.$file;
if (is_file($fullfilename)) {
$AllFiles[] = $fullfilename;
} elseif (is_dir($fullfilename)) {
switch ($file) {
case '.':
case '..':
break;
default:
$AllFiles[] = $fullfilename;
$subfiles = self::GetAllFilesInSubfolders($fullfilename);
foreach ($subfiles as $filename) {
$AllFiles[] = $filename;
}
break;
}
} else {
// ignore?
}
}
closedir($dirhandle);
}
sort($AllFiles);
return array_unique($AllFiles);
}
public static function SanitizeFilename($filename) {
$filename = preg_replace('/[^'.preg_quote(' !#$%^()+,-.;<>=@[]_{}').'a-zA-Z0-9]/', '_', $filename);
if (self::version_compare_replacement(PHP_VERSION, '4.1.0', '>=')) {
$filename = trim($filename, '.');
}
return $filename;
}
public static function PasswordStrength($password) {
$strength = 0;
$strength += strlen(preg_replace('#[^a-z]#', '', $password)) * 0.5; // lowercase characters are weak
$strength += strlen(preg_replace('#[^A-Z]#', '', $password)) * 0.8; // uppercase characters are somewhat better
$strength += strlen(preg_replace('#[^0-9]#', '', $password)) * 1.0; // numbers are somewhat better
$strength += strlen(preg_replace('#[a-zA-Z0-9]#', '', $password)) * 2.0; // other non-alphanumeric characters are best
return $strength;
}
}
////////////// END: class phpthumb_functions //////////////
if (!function_exists('gd_info')) {
// built into PHP v4.3.0+ (with bundled GD2 library)
function gd_info() {
static $gd_info = array();
if (empty($gd_info)) {
// based on code by johnschaefer at gmx dot de
// from PHP help on gd_info()
$gd_info = array(
'GD Version' => '',
'FreeType Support' => false,
'FreeType Linkage' => '',
'T1Lib Support' => false,
'GIF Read Support' => false,
'GIF Create Support' => false,
'JPG Support' => false,
'PNG Support' => false,
'WBMP Support' => false,
'XBM Support' => false
);
$phpinfo_array = phpthumb_functions::phpinfo_array();
foreach ($phpinfo_array as $line) {
$line = trim(strip_tags($line));
foreach ($gd_info as $key => $value) {
//if (strpos($line, $key) !== false) {
if (strpos($line, $key) === 0) {
$newvalue = trim(str_replace($key, '', $line));
$gd_info[$key] = $newvalue;
}