X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=lib%2Fimagefile.php;h=159deead61130a283e306c72c72a0c0469a38aba;hb=56e72ec7a138b823b8094312d935c9644838a8eb;hp=faec7f0ff4c653a69453bb41df90e6264ee14f74;hpb=d90089314944ed1696f66cabbb6935ea61e4b2e6;p=quix0rs-gnu-social.git diff --git a/lib/imagefile.php b/lib/imagefile.php index faec7f0ff4..159deead61 100644 --- a/lib/imagefile.php +++ b/lib/imagefile.php @@ -1,6 +1,6 @@ . * * @category Image - * @package Laconica - * @author Evan Prodromou - * @author Zach Copley - * @copyright 2008-2009 Control Yourself, Inc. + * @package StatusNet + * @author Evan Prodromou + * @author Zach Copley + * @copyright 2008-2009 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 - * @link http://laconi.ca/ + * @link http://status.net/ */ -if (!defined('LACONICA')) { +if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } @@ -38,11 +38,11 @@ if (!defined('LACONICA')) { * Makes it slightly easier to accept an image file from upload. * * @category Image - * @package Laconica - * @author Evan Prodromou - * @author Zach Copley + * @package StatusNet + * @author Evan Prodromou + * @author Zach Copley * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 - * @link http://laconi.ca/ + * @link http://status.net/ */ class ImageFile @@ -58,8 +58,21 @@ class ImageFile { $this->id = $id; $this->filepath = $filepath; - + $info = @getimagesize($this->filepath); + + if (!( + ($info[2] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) || + ($info[2] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) || + $info[2] == IMAGETYPE_BMP || + ($info[2] == IMAGETYPE_WBMP && function_exists('imagecreatefromwbmp')) || + ($info[2] == IMAGETYPE_XBM && function_exists('imagecreatefromxbm')) || + ($info[2] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')))) { + + throw new Exception(_('Unsupported image file format.')); + return; + } + $this->type = ($info) ? $info[2]:$type; $this->width = ($info) ? $info[0]:$width; $this->height = ($info) ? $info[1]:$height; @@ -68,66 +81,97 @@ class ImageFile static function fromUpload($param='upload') { switch ($_FILES[$param]['error']) { - case UPLOAD_ERR_OK: // success, jump out + case UPLOAD_ERR_OK: // success, jump out break; - case UPLOAD_ERR_INI_SIZE: - case UPLOAD_ERR_FORM_SIZE: - throw new Exception(_('That file is too big. The maximum file size is '.$this->maxFileSize().'.')); + case UPLOAD_ERR_INI_SIZE: + case UPLOAD_ERR_FORM_SIZE: + // TRANS: Exception thrown when too large a file is uploaded. + // TRANS: %s is the maximum file size, for example "500b", "10kB" or "2MB". + throw new Exception(sprintf(_('That file is too big. The maximum file size is %s.'), + ImageFile::maxFileSize())); return; - case UPLOAD_ERR_PARTIAL: + case UPLOAD_ERR_PARTIAL: @unlink($_FILES[$param]['tmp_name']); throw new Exception(_('Partial upload.')); return; - default: + case UPLOAD_ERR_NO_FILE: + // No file; probably just a non-AJAX submission. + return; + default: + common_log(LOG_ERR, __METHOD__ . ": Unknown upload error " . + $_FILES[$param]['error']); throw new Exception(_('System error uploading file.')); return; } - + $info = @getimagesize($_FILES[$param]['tmp_name']); - + if (!$info) { @unlink($_FILES[$param]['tmp_name']); throw new Exception(_('Not an image or corrupt file.')); return; } - - if ($info[2] !== IMAGETYPE_GIF && - $info[2] !== IMAGETYPE_JPEG && - $info[2] !== IMAGETYPE_PNG) { - - @unlink($_FILES[$param]['tmp_name']); - throw new Exception(_('Unsupported image file format.')); - return; - } return new ImageFile(null, $_FILES[$param]['tmp_name']); } - + + /** + * Compat interface for old code generating avatar thumbnails... + * Saves the scaled file directly into the avatar area. + * + * @param int $size target width & height -- must be square + * @param int $x (default 0) upper-left corner to crop from + * @param int $y (default 0) upper-left corner to crop from + * @param int $w (default full) width of image area to crop + * @param int $h (default full) height of image area to crop + * @return string filename + */ function resize($size, $x = 0, $y = 0, $w = null, $h = null) + { + $targetType = $this->preferredType($this->type); + $outname = Avatar::filename($this->id, + image_type_to_extension($targetType), + $size, + common_timestamp()); + $outpath = Avatar::path($outname); + $this->resizeTo($outpath, $size, $size, $x, $y, $w, $h); + return $outname; + } + + /** + * Create and save a thumbnail image. + * + * @param string $outpath + * @param int $width target width + * @param int $height target height + * @param int $x (default 0) upper-left corner to crop from + * @param int $y (default 0) upper-left corner to crop from + * @param int $w (default full) width of image area to crop + * @param int $h (default full) height of image area to crop + * @return string full local filesystem filename + */ + function resizeTo($outpath, $width, $height, $x=0, $y=0, $w=null, $h=null) { $w = ($w === null) ? $this->width:$w; $h = ($h === null) ? $this->height:$h; + $targetType = $this->preferredType($this->type); if (!file_exists($this->filepath)) { throw new Exception(_('Lost our file.')); return; } - + // Don't crop/scale if it isn't necessary - if ($size === $this->width - && $size === $this->height - && $x === 0 - && $y === 0 + if ($width === $this->width + && $height === $this->height + && $x === 0 + && $y === 0 && $w === $this->width - && $h === $this->height) { - - $outname = common_avatar_filename($this->id, - image_type_to_extension($this->type), - $size, - common_timestamp()); - $outpath = common_avatar_path($outname); + && $h === $this->height + && $this->type == $targetType) { + @copy($this->filepath, $outpath); - return $outname; + return $outpath; } switch ($this->type) { @@ -140,44 +184,46 @@ class ImageFile case IMAGETYPE_PNG: $image_src = imagecreatefrompng($this->filepath); break; + case IMAGETYPE_BMP: + $image_src = imagecreatefrombmp($this->filepath); + break; + case IMAGETYPE_WBMP: + $image_src = imagecreatefromwbmp($this->filepath); + break; + case IMAGETYPE_XBM: + $image_src = imagecreatefromxbm($this->filepath); + break; default: throw new Exception(_('Unknown file type')); return; } - $image_dest = imagecreatetruecolor($size, $size); - - if ($this->type == IMAGETYPE_GIF || $this->type == IMAGETYPE_PNG) { + $image_dest = imagecreatetruecolor($width, $height); + + if ($this->type == IMAGETYPE_GIF || $this->type == IMAGETYPE_PNG || $this->type == IMAGETYPE_BMP) { $transparent_idx = imagecolortransparent($image_src); - + if ($transparent_idx >= 0) { - + $transparent_color = imagecolorsforindex($image_src, $transparent_idx); $transparent_idx = imagecolorallocate($image_dest, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']); imagefill($image_dest, 0, 0, $transparent_idx); imagecolortransparent($image_dest, $transparent_idx); - + } elseif ($this->type == IMAGETYPE_PNG) { - + imagealphablending($image_dest, false); $transparent = imagecolorallocatealpha($image_dest, 0, 0, 0, 127); imagefill($image_dest, 0, 0, $transparent); imagesavealpha($image_dest, true); - + } } - imagecopyresampled($image_dest, $image_src, 0, 0, $x, $y, $size, $size, $w, $h); - - $outname = common_avatar_filename($this->id, - image_type_to_extension($this->type), - $size, - common_timestamp()); + imagecopyresampled($image_dest, $image_src, 0, 0, $x, $y, $width, $height, $w, $h); - $outpath = common_avatar_path($outname); - - switch ($this->type) { + switch ($targetType) { case IMAGETYPE_GIF: imagegif($image_dest, $outpath); break; @@ -191,43 +237,178 @@ class ImageFile throw new Exception(_('Unknown file type')); return; } - + imagedestroy($image_src); imagedestroy($image_dest); - return $outname; + return $outpath; + } + + /** + * Several obscure file types should be normalized to PNG on resize. + * + * @param int $type + * @return int + */ + function preferredType($type) + { + if($type == IMAGETYPE_BMP) { + //we don't want to save BMP... it's an inefficient, rare, antiquated format + //save png instead + return IMAGETYPE_PNG; + } else if($type == IMAGETYPE_WBMP) { + //we don't want to save WBMP... it's a rare format that we can't guarantee clients will support + //save png instead + return IMAGETYPE_PNG; + } else if($type == IMAGETYPE_XBM) { + //we don't want to save XBM... it's a rare format that we can't guarantee clients will support + //save png instead + return IMAGETYPE_PNG; + } + return $type; } function unlink() { @unlink($this->filename); } - - static function maxFileSize($return_bytes = false) + + static function maxFileSize() { - $limit = min(ImageFile::strToInt(ini_get('post_max_size')), ImageFile::strToInt(ini_get('upload_max_filesize')), ImageFile::strToInt(ini_get('memory_limit'))); - - if ($return_bytes) { - return $limit; + $value = ImageFile::maxFileSizeInt(); + + if ($value > 1024 * 1024) { + $value = $value/(1024*1024); + // TRANS: Number of megabytes. %d is the number. + return sprintf(_m('%dMB','%dMB',$value),$value); + } else if ($value > 1024) { + $value = $value/1024; + // TRANS: Number of kilobytes. %d is the number. + return sprintf(_m('%dkB','%dkB',$value),$value); + } else { + // TRANS: Number of bytes. %d is the number. + return sprintf(_m('%dB','%dB',$value),$value); } - - return ($limit/(1024*1024)).'MB'; } - + + static function maxFileSizeInt() + { + return min(ImageFile::strToInt(ini_get('post_max_size')), + ImageFile::strToInt(ini_get('upload_max_filesize')), + ImageFile::strToInt(ini_get('memory_limit'))); + } + static function strToInt($str) { $unit = substr($str, -1); $num = substr($str, 0, -1); - + switch(strtoupper($unit)){ - case 'G': - $num *= 1024; - case 'M': - $num *= 1024; - case 'K': - $num *= 1024; + case 'G': + $num *= 1024; + case 'M': + $num *= 1024; + case 'K': + $num *= 1024; } - + return $num; } -} \ No newline at end of file +} + +//PHP doesn't (as of 2/24/2010) have an imagecreatefrombmp so conditionally define one +if(!function_exists('imagecreatefrombmp')){ + //taken shamelessly from http://www.php.net/manual/en/function.imagecreatefromwbmp.php#86214 + function imagecreatefrombmp($p_sFile) + { + // Load the image into a string + $file = fopen($p_sFile,"rb"); + $read = fread($file,10); + while(!feof($file)&&($read<>"")) + $read .= fread($file,1024); + + $temp = unpack("H*",$read); + $hex = $temp[1]; + $header = substr($hex,0,108); + + // Process the header + // Structure: http://www.fastgraph.com/help/bmp_header_format.html + if (substr($header,0,4)=="424d") + { + // Cut it in parts of 2 bytes + $header_parts = str_split($header,2); + + // Get the width 4 bytes + $width = hexdec($header_parts[19].$header_parts[18]); + + // Get the height 4 bytes + $height = hexdec($header_parts[23].$header_parts[22]); + + // Unset the header params + unset($header_parts); + } + + // Define starting X and Y + $x = 0; + $y = 1; + + // Create newimage + $image = imagecreatetruecolor($width,$height); + + // Grab the body from the image + $body = substr($hex,108); + + // Calculate if padding at the end-line is needed + // Divided by two to keep overview. + // 1 byte = 2 HEX-chars + $body_size = (strlen($body)/2); + $header_size = ($width*$height); + + // Use end-line padding? Only when needed + $usePadding = ($body_size>($header_size*3)+4); + + // Using a for-loop with index-calculation instaid of str_split to avoid large memory consumption + // Calculate the next DWORD-position in the body + for ($i=0;$i<$body_size;$i+=3) + { + // Calculate line-ending and padding + if ($x>=$width) + { + // If padding needed, ignore image-padding + // Shift i to the ending of the current 32-bit-block + if ($usePadding) + $i += $width%4; + + // Reset horizontal position + $x = 0; + + // Raise the height-position (bottom-up) + $y++; + + // Reached the image-height? Break the for-loop + if ($y>$height) + break; + } + + // Calculation of the RGB-pixel (defined as BGR in image-data) + // Define $i_pos as absolute position in the body + $i_pos = $i*2; + $r = hexdec($body[$i_pos+4].$body[$i_pos+5]); + $g = hexdec($body[$i_pos+2].$body[$i_pos+3]); + $b = hexdec($body[$i_pos].$body[$i_pos+1]); + + // Calculate and draw the pixel + $color = imagecolorallocate($image,$r,$g,$b); + imagesetpixel($image,$x,$height-$y,$color); + + // Raise the horizontal position + $x++; + } + + // Unset the body / free the memory + unset($body); + + // Return image-object + return $image; + } +}