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inc/document.class.php
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221
inc/document.class.php
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<?php
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/*
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-------------------------------------------------------------------------
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GLPI - Gestionnaire Libre de Parc Informatique
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Copyright (C) 2003-2011 by the INDEPNET Development Team.
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http://indepnet.net/ http://glpi-project.org
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-------------------------------------------------------------------------
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LICENSE
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This file is part of GLPI.
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GLPI is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GLPI is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLPI. If not, see <http://www.gnu.org/licenses/>.
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--------------------------------------------------------------------------
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*/
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/**
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* Show how to dowload a file (or any stream) from the REST API
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* as well as metatadata stored in DB
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*
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* This itemtype is designed to be the same as Document in GLPI Core
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* to focus on the file dowload and upload features
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*
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* Example to download a file with cURL
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*
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* $ curl -X GET \
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* -H 'Content-Type: application/json' \
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* -H 'Session-Token: s6f3jik227ttrsat7d8ap9laal' \
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* -H 'Accept: application/octet-stream' \
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* 'http://path/to/glpi/apirest.php/PluginExampleDocument/1' \
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* --output /tmp/test_download
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*
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* Example to upload a file with cURL
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*
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* $ curl -X POST \
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* -H 'Content-Type: multipart/form-data' \
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* -H "Session-Token: s6f3jik227ttrsat7d8ap9laal" \
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* -F 'uploadManifest={"input": {"name": "Uploaded document", "_filename" : ["file.txt"]}}' \
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* -F 'file[]=@/tmp/test.txt' \
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* 'http://path/to/glpi/apirest.php/PluginExampleDocument/'
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*
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*/
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if (!defined('GLPI_ROOT')) {
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die("Sorry. You can't access this file directly");
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}
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class PluginExampleDocument extends Document {
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/**
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* Return the table used to store this object. Overloads the implementation in CommonDBTM
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*
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* @param string $classname Force class (to avoid late_binding on inheritance)
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*
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* @return string
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**/
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public static function getTable($classname = null) {
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if ($classname === null) {
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$classname = get_called_class();
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}
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if ($classname == get_called_class()) {
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return parent::getTable(Document::class);
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}
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return parent::getTable($classname);
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}
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/**
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* Prepare creation of an item
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*
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* @param array $input
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* @return array|false
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*/
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public function prepareInputForAdd($input) {
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$input['_only_if_upload_succeed'] = true;
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if (!isset($_FILES['file'])) {
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return false;
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}
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// Move the uploaded file to GLPi's tmp dir
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while (count($_FILES['file']['name']) > 0) {
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$source = array_pop($_FILES['file']['name']);
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$destination = GLPI_TMP_DIR . '/' . $source;
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move_uploaded_file($source, $destination);
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$input['_filename'][] = $source;
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}
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return parent::prepareInputForAdd($input);
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}
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/**
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* Prepare update of an item
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*
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* @param array $input
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* @return array|false
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*/
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public function prepareInputForUpdate($input) {
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// Do not allow update of document
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return false;
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}
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/**
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* Process required after loading an object from DB
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* In this example, a file is sent as a byte strem then stops execution.
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*
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* @return void
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*/
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public function post_getFromDB() {
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// Check the user can view this itemtype and can view this item
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if ($this->canView() && $this->canViewItem()) {
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if (isset($_SERVER['HTTP_ACCEPT']) && $_SERVER['HTTP_ACCEPT'] == 'application/octet-stream'
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|| isset($_GET['alt']) && $_GET['alt'] == 'media') {
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$this->sendFile(); // and terminate script
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}
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}
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}
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/**
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* Send a byte stream to the HTTP client and stops execution
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*
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* @return void
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*/
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protected function sendFile() {
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$streamSource = GLPI_DOC_DIR . '/' . $this->fields['filepath'];
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// Ensure the file exists
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if (!file_exists($streamSource) || !is_file($streamSource)) {
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header("HTTP/1.0 404 Not Found");
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exit(0);
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}
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// Download range defaults to the full file
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// get file metadata
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$size = filesize($streamSource);
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$begin = 0;
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$end = $size - 1;
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$mimeType = 'application/octet-stream';
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$time = date('r', filemtime($streamSource));
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// Open the file
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$fileHandle = @fopen($streamSource, 'rb');
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if (!$fileHandle) {
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header ("HTTP/1.0 500 Internal Server Error");
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exit(0);
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}
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// set range if specified by the client
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if (isset($_SERVER['HTTP_RANGE'])) {
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if (preg_match('/bytes=\h*(\d+)?-(\d*)[\D.*]?/i', $_SERVER['HTTP_RANGE'], $matches)) {
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if (!empty($matches[1])) {
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$begin = intval($matches[1]);
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}
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if (!empty($matches[2])) {
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$end = min(intval($matches[2]), $end);
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}
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}
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}
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// seek to the begining of the range
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$currentPosition = $begin;
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if (fseek($fileHandle, $begin, SEEK_SET) < 0) {
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header("HTTP/1.0 500 Internal Server Error");
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exit(0);
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}
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// send headers to ensure the client is able to detect a corrupted download
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// example : less bytes than the expected range
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// send meta data
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// setup client's cache behavior
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header("Expires: Mon, 26 Nov 1962 00:00:00 GMT");
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header('Pragma: private'); /// IE BUG + SSL
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header('Cache-control: private, must-revalidate'); /// IE BUG + SSL
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header("Content-disposition: attachment; filename=\"" . $this->fields['filename'] . "\"");
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header("Content-type: $mimeType");
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header("Last-Modified: $time");
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header('Accept-Ranges: bytes');
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header('Content-Length:' . ($end - $begin + 1));
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header("Content-Range: bytes $begin-$end/$size");
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header("Content-Transfer-Encoding: binary\n");
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header('Connection: close');
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// Prepare HTTP response
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if ($begin > 0 || $end < $size - 1) {
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header('HTTP/1.0 206 Partial Content');
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} else {
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header('HTTP/1.0 200 OK');
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}
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// Sends bytes until the end of the range or connection closed
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while (!feof($fileHandle) && $currentPosition < $end && (connection_status() == 0)) {
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// allow a few seconds to send a few KB.
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set_time_limit(10);
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$content = fread($fileHandle, min(1024 * 16, $end - $currentPosition + 1));
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if ($content === false) {
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header("HTTP/1.0 500 Internal Server Error", true); // Replace previously sent headers
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exit(0);
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} else {
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print $content;
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}
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flush();
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$currentPosition += 1024 * 16;
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}
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// End now to prevent any unwanted bytes
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exit(0);
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}
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}
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