124 lines
4.4 KiB
PHP
124 lines
4.4 KiB
PHP
<?php
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/******************************************************************************
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* YMS - Yacht Management Software
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* Copyright (C) 2024 Thomas Hooge
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*
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* SPDX-License-Identifier: WTFPL
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******************************************************************************/
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/* Document Downloader
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Doucuments are not directly accessible via filesystem
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dl.php must be used with "docid" as parameter: e.g, dl.php?id=23
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In additional parameter "t" (thumb) is set a thumbnail will be returned
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Possible values are: s (small), m (medium), l (large)
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Thumbnails are generated for pictures (png, jpg) and documents (pdf)
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TODO thumbs for svg? needed? perhaps small png thumbs?
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*/
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require 'globals.inc';
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require 'lib/fileutils.inc';
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$docid = gpc_get_int($_GET, 'id');
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if (! isset($docid)) {
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exit(1);
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}
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$page = gpc_get_int($_REQUEST, 'p', 1);
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$thumb = gpc_get_string($_GET, 't', 1);
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$size = array ('s' => 120, 'm' => 240, 'l' => '320');
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if (!array_key_exists($thumb, $size)) {
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unset($thumb);
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}
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$sql = "SELECT doctype, docsize, mimetype, hash, extension, filename, pages FROM document WHERE docid=?";
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$sth = $pdo->prepare($sql);
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$sth->execute([$docid]);
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$doc = $sth->fetch(PDO::FETCH_OBJ);
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// alter Dateiname
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// $ofn = sprintf("%s-%s.%s", $dtmap[$row['doctype']], $row['hash'], $row['extension'])
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// $file = sprintf("%s/%s-%s.%s", $g_doc_basepath, $g_doc_typemap[$row['doctype']], $row['hash'], $row['extension']);
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/*if (file_exists($file)) {
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// Hash-Dateinamen: Umbenennen in neues Format
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// document-format: ttt-nnnnnn.eee
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// thumbnail-format: ttt-nnnnnn-ppp-s.eee
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$fnew = sprintf('%s/%s-%06d.%s', $g_doc_basepath, $g_doc_typemap[$row['doctype']], $docid, $row['extension']);
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rename($file, $fnew);
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$file = $fnew;
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} else { */
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$file = sprintf('%s/%s-%06d.%s', $g_doc_basepath, $g_doc_typemap[$doc->doctype], $docid, $doc->extension);
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// }
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if (isset($thumb)) {
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if ($page < 1) {
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$page = 1;
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} elseif ($page > $doc->pages) {
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$page = $doc->pages;
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}
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if ($doc->mimetype == 'application/pdf') {
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// PDF creates PNG-thumbnails
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$thumbname = sprintf('%s-%06d-%03d-%s.png', $g_doc_typemap[$doc->doctype], $docid, $page, $thumb);
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$thumbpath = $g_doc_basepath . '/thumb/' . $thumbname;
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if (!file_exists($thumbpath)) {
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exec("/usr/bin/mutool draw -o {$thumbpath} -w {$size[$thumb]} $file $page", $output, $retval);
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}
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} else {
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$thumbname = sprintf('%s-%06d-%03d-%s.%s', $g_doc_typemap[$doc->doctype], $docid, $page, $thumb, $doc->extension);
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$thumbpath = $g_doc_basepath . '/thumb/' . $thumbname;
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if (!file_exists($thumbpath)) {
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list($width, $height) = getimagesize($file);
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$factor = $size[$thumb] / max($width, $height);
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// scale down
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if ($doc->mimetype == 'image/jpeg') {
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$orig = imagecreatefromjpeg($file);
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$scaled = imagescale($orig, $width * $factor, $height * $factor, IMG_BICUBIC);
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imagejpeg($scaled, $thumbpath, 85);
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$file = $thumbpath;
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$filename = $thumbname;
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$fsize = 0; // let's calc later
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} elseif ($doc->mimetype == 'image/png') {
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$orig = imagecreatefrompng($file);
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} elseif ($doc_>mimetype == 'image/xml+svg') {
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// TODO anything here?
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}
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}
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}
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$file = $thumbpath;
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$filename = $thumbname;
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$fsize = 0; // let's calc later
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} else {
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// normal
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$filename = $doc->filename;
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$fsize = $doc->docsize;
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}
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if (file_exists($file)) {
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// send file to caller
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header('Content-Description: File Transfer');
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header('Content-Type: ' . $doc->mimetype);
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header('Content-Disposition: attachment; filename="' . $filename . '"');
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header('Expires: 0');
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header('Cache-Control: must-revalidate');
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header('Pragma: public');
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if ($fsize == 0) {
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header('Content-Length: ' . filesize($file));
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} else {
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header('Content-Length: ' . $fsize);
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}
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readfile($file);
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exit;
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} else {
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// dynamically create error image
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header("Content-Type: image/png");
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$im = @imagecreate(110, 20) or die(_("Cannot initialize new GD image stream"));
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$bgcolor = imagecolorallocate($im, 0, 0, 0);
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$txcolor = imagecolorallocate($im, 233, 14, 91);
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imagestring($im, 1, 5, 5, "Resource not found!", $txcolor);
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imagepng($im);
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imagedestroy($im);
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}
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