function AntiOffsiteLinking()
{
// Optional anti-offsite hijacking of the thumbnail script
$allow = true;
if ($allow && $this->config_nooffsitelink_enabled && (@$_SERVER['HTTP_REFERER'] || $this->config_nooffsitelink_require_refer)) {
$this->DebugMessage('AntiOffsiteLinking() checking $_SERVER[HTTP_REFERER] "' . @$_SERVER['HTTP_REFERER'] . '"', __FILE__, __LINE__);
$parsed_url = parse_url(@$_SERVER['HTTP_REFERER']);
if (!phpthumb_functions::CaseInsensitiveInArray(@$parsed_url['host'], $this->config_nooffsitelink_valid_domains)) {
$allow = false;
$erase = $this->config_nooffsitelink_erase_image;
$message = $this->config_nooffsitelink_text_message;
$this->DebugMessage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is NOT in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
} else {
$this->DebugMessage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
}
}
if ($allow && $this->config_nohotlink_enabled && eregi('^(f|ht)tps?\\://', $this->src)) {
$parsed_url = parse_url($this->src);
if (!phpthumb_functions::CaseInsensitiveInArray(@$parsed_url['host'], $this->config_nohotlink_valid_domains)) {
// This domain is not allowed
$allow = false;
$erase = $this->config_nohotlink_erase_image;
$message = $this->config_nohotlink_text_message;
$this->DebugMessage('AntiOffsiteLinking() - "' . $parsed_url['host'] . '" is NOT in $this->config_nohotlink_valid_domains (' . implode(';', $this->config_nohotlink_valid_domains) . ')', __FILE__, __LINE__);
} else {
$this->DebugMessage('AntiOffsiteLinking() - "' . $parsed_url['host'] . '" is in $this->config_nohotlink_valid_domains (' . implode(';', $this->config_nohotlink_valid_domains) . ')', __FILE__, __LINE__);
}
}
if ($allow) {
$this->DebugMessage('AntiOffsiteLinking() says this is allowed', __FILE__, __LINE__);
return true;
}
if (!phpthumb_functions::IsHexColor($this->config_error_bgcolor)) {
return $this->ErrorImage('Invalid hex color string "' . $this->config_error_bgcolor . '" for $this->config_error_bgcolor');
}
if (!phpthumb_functions::IsHexColor($this->config_error_textcolor)) {
return $this->ErrorImage('Invalid hex color string "' . $this->config_error_textcolor . '" for $this->config_error_textcolor');
}
if ($erase) {
return $this->ErrorImage($message, $this->thumbnail_width, $this->thumbnail_height, $this->config_error_bgcolor, $this->config_error_textcolor, $this->config_error_fontsize);
} else {
$nohotlink_text_array = explode("\n", wordwrap($message, floor($this->thumbnail_width / ImageFontWidth($this->config_error_fontsize)), "\n"));
$nohotlink_text_color = phpthumb_functions::ImageHexColorAllocate($this->gdimg_output, $this->config_error_textcolor);
$topoffset = round(($this->thumbnail_height - count($nohotlink_text_array) * ImageFontHeight($this->config_error_fontsize)) / 2);
$rowcounter = 0;
$this->DebugMessage('AntiOffsiteLinking() writing ' . count($nohotlink_text_array) . ' lines of text "' . $message . '" (in #' . $this->config_error_textcolor . ') on top of image', __FILE__, __LINE__);
foreach ($nohotlink_text_array as $dummy => $textline) {
$leftoffset = max(0, round(($this->thumbnail_width - strlen($textline) * ImageFontWidth($this->config_error_fontsize)) / 2));
ImageString($this->gdimg_output, $this->config_error_fontsize, $leftoffset, $topoffset + $rowcounter++ * ImageFontHeight($this->config_error_fontsize), $textline, $nohotlink_text_color);
}
}
return true;
}
function setOutputFormat()
{
static $alreadyCalled = false;
if ($this->thumbnailFormat && $alreadyCalled) {
return true;
}
$alreadyCalled = true;
$AvailableImageOutputFormats = array();
$AvailableImageOutputFormats[] = 'text';
if (@is_readable(dirname(__FILE__) . '/phpthumb.ico.php')) {
$AvailableImageOutputFormats[] = 'ico';
}
if (@is_readable(dirname(__FILE__) . '/phpthumb.bmp.php')) {
$AvailableImageOutputFormats[] = 'bmp';
}
$this->thumbnailFormat = 'ico';
// Set default output format based on what image types are available
if (function_exists('ImageTypes')) {
$imagetypes = ImageTypes();
if ($imagetypes & IMG_WBMP) {
$this->thumbnailFormat = 'wbmp';
$AvailableImageOutputFormats[] = 'wbmp';
}
if ($imagetypes & IMG_GIF) {
$this->thumbnailFormat = 'gif';
$AvailableImageOutputFormats[] = 'gif';
}
if ($imagetypes & IMG_PNG) {
$this->thumbnailFormat = 'png';
$AvailableImageOutputFormats[] = 'png';
}
if ($imagetypes & IMG_JPG) {
$this->thumbnailFormat = 'jpeg';
$AvailableImageOutputFormats[] = 'jpeg';
}
} else {
//return $this->ErrorImage('ImageTypes() does not exist - GD support might not be enabled?');
$this->DebugMessage('ImageTypes() does not exist - GD support might not be enabled?', __FILE__, __LINE__);
}
if ($this->ImageMagickVersion()) {
$IMformats = array('jpeg', 'png', 'gif', 'bmp', 'ico', 'wbmp');
$this->DebugMessage('Addding ImageMagick formats to $AvailableImageOutputFormats (' . implode(';', $AvailableImageOutputFormats) . ')', __FILE__, __LINE__);
foreach ($IMformats as $key => $format) {
$AvailableImageOutputFormats[] = $format;
}
}
$AvailableImageOutputFormats = array_unique($AvailableImageOutputFormats);
$this->DebugMessage('$AvailableImageOutputFormats = array(' . implode(';', $AvailableImageOutputFormats) . ')', __FILE__, __LINE__);
$this->f = preg_replace('#[^a-z]#', '', strtolower($this->f));
if (strtolower($this->config_output_format) == 'jpg') {
$this->config_output_format = 'jpeg';
}
if (strtolower($this->f) == 'jpg') {
$this->f = 'jpeg';
}
if (phpthumb_functions::CaseInsensitiveInArray($this->config_output_format, $AvailableImageOutputFormats)) {
// set output format to config default if that format is available
$this->DebugMessage('$this->thumbnailFormat set to $this->config_output_format "' . strtolower($this->config_output_format) . '"', __FILE__, __LINE__);
$this->thumbnailFormat = strtolower($this->config_output_format);
} elseif ($this->config_output_format) {
$this->DebugMessage('$this->thumbnailFormat staying as "' . $this->thumbnailFormat . '" because $this->config_output_format (' . strtolower($this->config_output_format) . ') is not in $AvailableImageOutputFormats', __FILE__, __LINE__);
}
if ($this->f && phpthumb_functions::CaseInsensitiveInArray($this->f, $AvailableImageOutputFormats)) {
// override output format if $this->f is set and that format is available
$this->DebugMessage('$this->thumbnailFormat set to $this->f "' . strtolower($this->f) . '"', __FILE__, __LINE__);
$this->thumbnailFormat = strtolower($this->f);
} elseif ($this->f) {
$this->DebugMessage('$this->thumbnailFormat staying as "' . $this->thumbnailFormat . '" because $this->f (' . strtolower($this->f) . ') is not in $AvailableImageOutputFormats', __FILE__, __LINE__);
}
// for JPEG images, quality 1 (worst) to 99 (best)
// quality < 25 is nasty, with not much size savings - not recommended
// problems with 100 - invalid JPEG?
$this->thumbnailQuality = max(1, min(99, $this->q ? intval($this->q) : 75));
$this->DebugMessage('$this->thumbnailQuality set to "' . $this->thumbnailQuality . '"', __FILE__, __LINE__);
return true;
}
function AntiOffsiteLinking()
{
// Optional anti-offsite hijacking of the thumbnail script
$allow = true;
if ($allow && $this->config_nooffsitelink_enabled && (@$_SERVER['HTTP_REFERER'] || $this->config_nooffsitelink_require_refer)) {
$this->DebugMessage('AntiOffsiteLinking() checking $_SERVER[HTTP_REFERER] "' . @$_SERVER['HTTP_REFERER'] . '"', __FILE__, __LINE__);
foreach ($this->config_nooffsitelink_valid_domains as $key => $valid_domain) {
// $_SERVER['HTTP_HOST'] contains the port number, so strip it out here to make default configuration work
list($clean_domain) = explode(':', $valid_domain);
$this->config_nooffsitelink_valid_domains[$key] = $clean_domain;
}
$parsed_url = parse_url(@$_SERVER['HTTP_REFERER']);
if (!phpthumb_functions::CaseInsensitiveInArray(@$parsed_url['host'], $this->config_nooffsitelink_valid_domains)) {
$allow = false;
$erase = $this->config_nooffsitelink_erase_image;
$message = $this->config_nooffsitelink_text_message;
$this->ErrorImage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is NOT in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')');
exit;
$this->DebugMessage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is NOT in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
} else {
$this->DebugMessage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
}
}
if ($allow && $this->config_nohotlink_enabled && eregi('^(f|ht)tps?\\://', $this->src)) {
$parsed_url = parse_url($this->src);
if (!phpthumb_functions::CaseInsensitiveInArray(@$parsed_url['host'], $this->config_nohotlink_valid_domains)) {
// This domain is not allowed
$allow = false;
$erase = $this->config_nohotlink_erase_image;
$message = $this->config_nohotlink_text_message;
$this->DebugMessage('AntiOffsiteLinking() - "' . $parsed_url['host'] . '" is NOT in $this->config_nohotlink_valid_domains (' . implode(';', $this->config_nohotlink_valid_domains) . ')', __FILE__, __LINE__);
} else {
$this->DebugMessage('AntiOffsiteLinking() - "' . $parsed_url['host'] . '" is in $this->config_nohotlink_valid_domains (' . implode(';', $this->config_nohotlink_valid_domains) . ')', __FILE__, __LINE__);
}
}
if ($allow) {
$this->DebugMessage('AntiOffsiteLinking() says this is allowed', __FILE__, __LINE__);
return true;
}
if (!phpthumb_functions::IsHexColor($this->config_error_bgcolor)) {
return $this->ErrorImage('Invalid hex color string "' . $this->config_error_bgcolor . '" for $this->config_error_bgcolor');
}
if (!phpthumb_functions::IsHexColor($this->config_error_textcolor)) {
return $this->ErrorImage('Invalid hex color string "' . $this->config_error_textcolor . '" for $this->config_error_textcolor');
}
if ($erase) {
return $this->ErrorImage($message, $this->thumbnail_width, $this->thumbnail_height, $this->config_error_bgcolor, $this->config_error_textcolor, $this->config_error_fontsize);
} else {
$this->config_nooffsitelink_watermark_src = $this->ResolveFilenameToAbsolute($this->config_nooffsitelink_watermark_src);
if (is_file($this->config_nooffsitelink_watermark_src)) {
if (!(include_once dirname(__FILE__) . '/phpthumb.filters.php')) {
$this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.filters.php" which is required for applying watermark', __FILE__, __LINE__);
return false;
}
$watermark_img = $this->ImageCreateFromStringReplacement(file_get_contents($this->config_nooffsitelink_watermark_src));
$phpthumbFilters = new phpthumb_filters();
$phpthumbFilters->phpThumbObject = $this;
$opacity = 50;
$margin = 5;
$phpthumbFilters->WatermarkOverlay($this->gdimg_output, $watermark_img, '*', $opacity, $margin);
ImageDestroy($watermark_img);
unset($phpthumbFilters);
} else {
$nohotlink_text_array = explode("\n", wordwrap($message, floor($this->thumbnail_width / ImageFontWidth($this->config_error_fontsize)), "\n"));
$nohotlink_text_color = phpthumb_functions::ImageHexColorAllocate($this->gdimg_output, $this->config_error_textcolor);
$topoffset = round(($this->thumbnail_height - count($nohotlink_text_array) * ImageFontHeight($this->config_error_fontsize)) / 2);
$rowcounter = 0;
$this->DebugMessage('AntiOffsiteLinking() writing ' . count($nohotlink_text_array) . ' lines of text "' . $message . '" (in #' . $this->config_error_textcolor . ') on top of image', __FILE__, __LINE__);
foreach ($nohotlink_text_array as $textline) {
$leftoffset = max(0, round(($this->thumbnail_width - strlen($textline) * ImageFontWidth($this->config_error_fontsize)) / 2));
ImageString($this->gdimg_output, $this->config_error_fontsize, $leftoffset, $topoffset + $rowcounter++ * ImageFontHeight($this->config_error_fontsize), $textline, $nohotlink_text_color);
}
}
}
return true;
}
