<?php
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/**
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* 此页面用来协助 IE6/7 预览图片，因为 IE 6/7 不支持 base64
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*/
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$DIR = 'preview';
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// Create target dir
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if (!file_exists($DIR)) {
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@mkdir($DIR);
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}
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$cleanupTargetDir = true; // Remove old files
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$maxFileAge = 5 * 3600; // Temp file age in seconds
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if ($cleanupTargetDir) {
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if (!is_dir($DIR) || !$dir = opendir($DIR)) {
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die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}');
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}
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while (($file = readdir($dir)) !== false) {
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$tmpfilePath = $DIR . DIRECTORY_SEPARATOR . $file;
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// Remove temp file if it is older than the max age and is not the current file
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if (@filemtime($tmpfilePath) < time() - $maxFileAge) {
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@unlink($tmpfilePath);
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}
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}
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closedir($dir);
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}
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$src = file_get_contents('php://input');
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if (preg_match("#^data:image/(\w+);base64,(.*)$#", $src, $matches)) {
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$previewUrl = sprintf(
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"%s://%s%s",
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isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http',
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$_SERVER['HTTP_HOST'],
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$_SERVER['REQUEST_URI']
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);
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$previewUrl = str_replace("preview.php", "", $previewUrl);
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$base64 = $matches[2];
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$type = $matches[1];
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if ($type === 'jpeg') {
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$type = 'jpg';
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}
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$filename = md5($base64).".$type";
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$filePath = $DIR.DIRECTORY_SEPARATOR.$filename;
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if (file_exists($filePath)) {
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die('{"jsonrpc" : "2.0", "result" : "'.$previewUrl.'preview/'.$filename.'", "id" : "id"}');
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} else {
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$data = base64_decode($base64);
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file_put_contents($filePath, $data);
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die('{"jsonrpc" : "2.0", "result" : "'.$previewUrl.'preview/'.$filename.'", "id" : "id"}');
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}
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} else {
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die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "un recoginized source"}}');
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}
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