350 lines
11 KiB
PHP
350 lines
11 KiB
PHP
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<?php
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/**
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* Smarty plugin
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*
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* @package Smarty
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* @subpackage PluginsFunction
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* @author Andreas Goetz <cpuidle@gmx.de>
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*/
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////require_once('./vendor/james-heinrich/phpthumb/phpthumb.class.php');
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require_once 'vendor/autoload.php';
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define('THUMB_CACHE_SOURCE', true);
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define('THUMB_CACHE_TARGET', true);
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/**
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* This function is to replace PHP's extremely buggy realpath().
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* http://stackoverflow.com/questions/4049856/replace-phps-realpath
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* @param string The original path, can be relative etc.
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* @return string The resolved path, it might not exist.
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*/
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function truepath($path){
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// whether $path is unix or not
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$relpath = strlen($path)==0 || $path[0]!='/';
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// attempts to detect if path is relative in which case, add cwd
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if (strpos($path,':')===false && $relpath) {
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$path = getcwd().DIRECTORY_SEPARATOR.$path;
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$relpath = false;
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}
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// resolve path parts (single dot, double dot and double delimiters)
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$path = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $path);
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$parts = array_filter(explode(DIRECTORY_SEPARATOR, $path), 'strlen');
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$absolutes = array();
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foreach ($parts as $part) {
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if ('.' == $part) continue;
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if ('..' == $part) {
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array_pop($absolutes);
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} else {
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$absolutes[] = $part;
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}
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}
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$path = implode(DIRECTORY_SEPARATOR, $absolutes);
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// resolve any symlinks
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if (file_exists($path) && linkinfo($path)>0) {
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$path = readlink($path);
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// } else {
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} elseif (strpos($path,':') === false && !$relpath) {
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// put back initial unix separator that could have been lost
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// $path = (strpos($path,':')>=0 || $relpath) ? $path : '/'.$path;
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$path = '/'.$path;
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}
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return $path;
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}
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function html_image_get_cache($tag, &$width, &$height)
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{
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$res = runSQL("SELECT * FROM ".TBL_CACHE." WHERE tag='".escapeSQL($tag)."'");
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if (count($res))
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{
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if (preg_match('/(\d+)x(\d+)/', $res[0]['value'], $m))
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{
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list($foo, $width, $height) = $m;
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return true;
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}
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}
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return false;
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}
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function html_image_put_cache($tag, $value)
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{
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$res = runSQL("REPLACE INTO ".TBL_CACHE." SET tag='".escapeSQL($tag)."', value='".escapeSQL($value)."'");
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}
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/**
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* Thumbnail generation
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*/
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function generate_thumbnail(&$file, &$width, &$height, $max_width, $max_height, $cache_tag)
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{
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global $config;
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$thumb_cache_tag = $cache_tag.'_'.$max_width.'x'.$max_height;
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// the names of the existing or to-be created thumbnail- still missing dimensions
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$thumb_name = './cache/'.CACHE_THUMBS.'/'.
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(($config['hierarchical']) ? substr($cache_tag, 0, 1).'/' : '').
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$cache_tag;
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// did we already create this thumbnail?
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if (THUMB_CACHE_TARGET && html_image_get_cache($thumb_cache_tag, $width, $height))
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{
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// get updated filename
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$file = $thumb_name.'_'.$width.'x'.$height.'.jpg';
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return;
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}
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// thumbnail not created yet
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$scale = min($max_width/$width, $max_height/$height);
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$width = round($width * $scale);
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$height = round($height * $scale);
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// really need to scale?
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$thumb_must_scale = (($config['thumbnail_level'] == TUMB_SCALE) ||
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($config['thumbnail_level'] == TUMB_REDUCE_ONLY && ($scale < 1)) ||
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($config['thumbnail_level'] > 1) && ($config['thumbnail_level'] < @filesize($file)));
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#dump("scaling required: ".(int)$thumb_must_scale." filesize: ".@filesize($file));
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// perform actual scaling
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if ($thumb_must_scale)
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{
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$phpThumb = new phpThumb();
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// use of truepath was added for php 5.4 apparently- otherwise thumbnail creation would inadvertantly fail
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$phpThumb->config_cache_directory = '';
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$phpThumb->src = '';
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$phpThumb->sourceFilename = truepath($file);
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$phpThumb->w = $max_width;
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$phpThumb->h = $max_height;
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if ($config['thumbnail_quality']) $phpThumb->q = $config['thumbnail_quality'];
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// set cache filename
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$thumb_name .= '_'.$width.'x'.$height.'.jpg';
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#dump("thumbname:$thumb_name");
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// check to see if file already exists in cache, and output it with no processing if it does
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if (is_writable(dirname($thumb_name)) || is_writable($thumb_name))
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{
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if (@filesize($thumb_name) ||
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($phpThumb->GenerateThumbnail() && $phpThumb->RenderOutput() &&
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file_put_contents($thumb_name, $phpThumb->outputImageData)))
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{
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$file = $thumb_name;
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if (THUMB_CACHE_TARGET) html_image_put_cache($thumb_cache_tag, $width.'x'.$height);
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}
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/*
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# emergency debugging
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else
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{
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dlog("Fail: $thumb_name");
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dlog("fs: ".@filesize($thumb_name));
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dlog($phpThumb->GenerateThumbnail());
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dlog($phpThumb->RenderOutput());
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dlog($phpThumb->debugmessages);
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}
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*/
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}
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// free memory
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$phpThumb = null;
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}
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}
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/**
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* Smarty {html_image} function plugin
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*
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* Type: function<br>
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* Name: html_image<br>
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* Date: Feb 24, 2003<br>
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* Purpose: format HTML tags for the image<br>
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* Examples: {html_image file="/images/masthead.gif"}
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* Output: <img src="/images/masthead.gif" width=400 height=23>
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*
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* @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image}
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* (Smarty online manual)
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* @author Monte Ohrt <monte at ohrt dot com>
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* @author credits to Duda <duda@big.hu>
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* @version 1.0
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* @param array $params parameters
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* Input:<br>
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* - file = file (and path) of image (required)
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* - height = image height (optional, default actual height)
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* - width = image width (optional, default actual width)
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* - basedir = base directory for absolute paths, default
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* is environment variable DOCUMENT_ROOT
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* - path_prefix = prefix for path output (optional, default empty)
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* @param object $template template object
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* @return string
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* @uses smarty_function_escape_special_chars()
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*/
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function smarty_function_html_image($params, $template)
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{
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global $config;
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require_once(SMARTY_PLUGINS_DIR . 'shared.escape_special_chars.php');
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$alt = '';
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$file = '';
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$border = 0;
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$height = '';
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$width = '';
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$extra = '';
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$prefix = '';
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$suffix = '';
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$path_only = false;
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$path_prefix = '';
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$server_vars = $_SERVER;
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$basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';
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$no_scaling = false;
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foreach($params as $_key => $_val) {
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switch($_key) {
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case 'file':
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case 'height':
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case 'width':
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case 'dpi':
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case 'path_only':
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case 'path_prefix':
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case 'basedir':
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//!! cpuidle@gmx.de
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case 'border':
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case 'max_width':
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case 'max_height':
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$$_key = $_val;
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break;
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case 'alt':
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if(!is_array($_val)) {
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$$_key = smarty_function_escape_special_chars($_val);
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} else {
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throw new SmartyException ("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
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}
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break;
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case 'link':
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case 'href':
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// cpuidle@gmx.de suppress hrefs without link
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if (!empty($_val)) {
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$prefix = '<a href="' . $_val . '">';
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$suffix = '</a>';
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}
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break;
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default:
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if(!is_array($_val)) {
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$extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
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} else {
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throw new SmartyException ("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
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}
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break;
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}
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}
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if (empty($file)) {
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trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);
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return;
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}
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if (substr($file, 0, 1) == '/') {
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$_image_path = $basedir . $file;
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} else {
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$_image_path = $file;
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}
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#dlog("\nimg: $_image_path");
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if (!isset($params['width']) || !isset($params['height']))
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{
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// cpuidle@gmx.de check for non-local images
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if (preg_match("/nocover|^(http:|img\.php)/", $_image_path))
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{
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$no_scaling = true;
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#dlog("no scaling");
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}
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else
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{
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// do we already know this image?
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$cache_tag = md5($_image_path);
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// are we creating thumbnails and can we get the thumbnail from cache?
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if (!(THUMB_CACHE_SOURCE && html_image_get_cache($cache_tag, $width, $height)))
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{
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if ($_image_data = @getimagesize($_image_path)) {
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if (!isset($params['width'])) $width = $_image_data[0];
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if (!isset($params['height'])) $height = $_image_data[1];
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if (THUMB_CACHE_SOURCE) html_image_put_cache($cache_tag, $width.'x'.$height);
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#dlog("cache commit: $width $height");
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}
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else {
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#dlog("image error: $_image_path");
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// TODO check how to handle non-existing images
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if (!file_exists($_image_path)) {
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trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE);
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return;
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} else if(!is_readable($_image_path)) {
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trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE);
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return;
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} else {
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trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE);
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return;
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}
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}
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if (isset($template->security_policy)) {
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if (!$template->security_policy->isTrustedResourceDir($_image_path)) {
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return;
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}
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}
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}
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}
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if (empty($width)) $width = $max_width;
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if (empty($height)) $height = $max_height;
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/*
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* Scaling is required if:
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* - scale mode TUMB_SCALE
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* - scale mode TUMB_REDUCE_ONLY and dimensions > target dimensions
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* - scale mode is any other numeric and filesize > scale mode
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*/
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if ($max_width && $max_height && !$no_scaling)
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{
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// even if thumbnails are not generated we should get aspect ratio right
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if ($config['thumbnail_level'] == TUMB_NO_SCALE)
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{
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$scale = min($max_width/$width, $max_height/$height);
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$width = round($width * $scale);
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$height = round($height * $scale);
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}
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else
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{
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generate_thumbnail($file, $width, $height, $max_width, $max_height, $cache_tag);
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}
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}
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}
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if (isset($params['dpi']))
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{
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$dpi_default = (strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) ? 72 : 96;
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$_resize = $dpi_default/$params['dpi'];
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$width = round($width * $_resize);
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$height = round($height * $_resize);
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}
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if ($path_only) {
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// we only need the image path
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return($file);
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}
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$result = $prefix . '<img src="'.$file.'" alt="'.$alt;
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if (isset($border)) $result .= '" border="'.$border;
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if ($width) $result .= '" width="'.$width;
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if ($height) $result .= '" height="'.$height;
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$result .= '"'.$extra.' />' . $suffix;
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return $result;
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}
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?>
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