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iTop/core/ormdocument.class.inc.php

309 lines
9.5 KiB
PHP

<?php
/**
* Copyright (C) 2013-2023 Combodo SARL
*
* This file is part of iTop.
*
* iTop is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* iTop is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
*/
use Combodo\iTop\Service\Events\EventData;
use Combodo\iTop\Service\Events\EventService;
/**
* ormDocument
* encapsulate the behavior of a binary data set that will be stored an attribute of class AttributeBlob
*
* @package itopORM
*/
class ormDocument
{
/**
* @var string For content that should be displayed in the browser
* @link https://developer.mozilla.org/fr/docs/Web/HTTP/Headers/Content-Disposition#syntaxe
* @since 3.1.0
*/
public const ENUM_CONTENT_DISPOSITION_INLINE = 'inline';
/**
* @var string For content that should be downloaded on the device. Mind that "attachment" Content-Disposition has nothing to do with the "Attachment" class from the DataModel.
* @link https://developer.mozilla.org/fr/docs/Web/HTTP/Headers/Content-Disposition#syntaxe
* @since 3.1.0
*/
public const ENUM_CONTENT_DISPOSITION_ATTACHMENT = 'attachment';
/**
* @var int Default downloads count of the document, should always be 0.
* @since 3.1.0
*/
public const DEFAULT_DOWNLOADS_COUNT = 0;
protected $m_data;
protected $m_sMimeType;
protected $m_sFileName;
/**
* @var int $m_iDownloadsCount Number of times the document has been downloaded (through the standard API!). Note that download from the browser's cache won't appear.
* @since 3.1.0
*/
private $m_iDownloadsCount;
/**
* Constructor
*
* @param null $data
* @param string $sMimeType
* @param string $sFileName
* @param int $iDownloadsCount
*
* @since 3.1.0 N°2889 Add $iDownloadsCount parameter
*/
public function __construct($data = null, $sMimeType = 'text/plain', $sFileName = '', $iDownloadsCount = self::DEFAULT_DOWNLOADS_COUNT)
{
$this->m_data = $data;
$this->m_sMimeType = $sMimeType;
$this->m_sFileName = $sFileName;
$this->m_iDownloadsCount = $iDownloadsCount;
}
public function __toString()
{
if($this->IsEmpty()) return '';
return MyHelpers::beautifulstr($this->m_data, 100, true);
}
public function IsEmpty()
{
return ($this->m_data == null);
}
public function GetMimeType()
{
return $this->m_sMimeType;
}
public function GetMainMimeType()
{
$iSeparatorPos = strpos($this->m_sMimeType, '/');
if ($iSeparatorPos > 0)
{
return substr($this->m_sMimeType, 0, $iSeparatorPos);
}
return $this->m_sMimeType;
}
/**
* @return int size in bits
* @uses strlen which returns the no of bits used
* @since 2.7.0
*/
public function GetSize()
{
return strlen($this->m_data);
}
/**
* @param int $precision
*
* @return string
* @uses utils::BytesToFriendlyFormat()
*/
public function GetFormattedSize($precision = 2)
{
$bytes = $this->GetSize();
return utils::BytesToFriendlyFormat($bytes, $precision);
}
public function GetData()
{
return $this->m_data;
}
public function GetFileName()
{
return $this->m_sFileName;
}
/**
* @see static::DownloadDocument()
* @see static::$m_iDownloadsCount
* @return int Number of times the document has been downloaded (through the standard API!)
* @since 3.1.0
*/
public function GetDownloadsCount(): int
{
// Force cast to get 0 instead of null on fields prior to the features that have never been downloaded.
return (int) $this->m_iDownloadsCount;
}
/**
* Increase the number of downloads of the document by $iNumber
*
* @param int $iNumber Step to increase the counter with, default is 1.
* @return void
* @since 3.1.0
*/
public function IncreaseDownloadsCount($iNumber = 1): void
{
$this->m_iDownloadsCount += $iNumber;
}
public function GetAsHTML()
{
$sResult = '';
if ($this->IsEmpty()) {
// If the filename is not empty, display it, this is used
// by the creation wizard while the file has not yet been uploaded
$sResult = utils::EscapeHtml($this->GetFileName());
} else {
$data = $this->GetData();
$sSize = utils::BytesToFriendlyFormat(strlen($data));
$iDownloadsCount = $this->GetDownloadsCount();
$sDownloadsCountForHtml = utils::HtmlEntities(Dict::Format('Core:ormValue:ormDocument:DownloadsCount', $iDownloadsCount));
$sDownloadsCountTooltipForHtml = utils::HtmlEntities(Dict::Format('Core:ormValue:ormDocument:DownloadsCount+', $iDownloadsCount));
$sResult = utils::EscapeHtml($this->GetFileName()).' ('.$sSize.' / '.$sDownloadsCountForHtml.' <i class="fas fa-cloud-download-alt" data-tooltip-content="'.$sDownloadsCountTooltipForHtml.'"></i>)<br/>';
}
return $sResult;
}
/**
* Returns an hyperlink to display the document *inline*
* @return string
*/
public function GetDisplayLink($sClass, $Id, $sAttCode)
{
$sUrl = $this->GetDisplayURL($sClass, $Id, $sAttCode);
return "<a href=\"$sUrl\" target=\"_blank\" >".utils::EscapeHtml($this->GetFileName())."</a>\n";
}
/**
* Returns an hyperlink to download the document (content-disposition: attachment)
* @return string
*/
public function GetDownloadLink($sClass, $Id, $sAttCode)
{
$sUrl = $this->GetDownloadURL($sClass, $Id, $sAttCode);
return "<a href=\"$sUrl\">".utils::EscapeHtml($this->GetFileName())."</a>\n";
}
/**
* Returns an URL to display a document like an image
* @return string
*/
public function GetDisplayURL($sClass, $Id, $sAttCode)
{
$sSignature = $this->GetSignature();
// TODO: When refactoring this with the URLMaker system, mind to also change calls in the portal (look for the "p_object_document_display" route)
return utils::GetAbsoluteUrlAppRoot() . "pages/ajax.render.php?operation=display_document&class=$sClass&id=$Id&field=$sAttCode&s=$sSignature&cache=86400";
}
/**
* Returns an URL to download a document like an image (uses HTTP caching)
* @return string
*/
public function GetDownloadURL($sClass, $Id, $sAttCode)
{
// Compute a signature to reset the cache anytime the data changes (this is acceptable if used only with icon files)
$sSignature = $this->GetSignature();
// TODO: When refactoring this with the URLMaker system, mind to also change calls in the portal (look for the "p_object_document_display" route)
return utils::GetAbsoluteUrlAppRoot() . "pages/ajax.document.php?operation=download_document&class=$sClass&id=$Id&field=$sAttCode&s=$sSignature&cache=86400";
}
public function IsPreviewAvailable()
{
$bRet = false;
switch($this->GetMimeType())
{
case 'image/png':
case 'image/jpg':
case 'image/jpeg':
case 'image/gif':
case 'image/bmp':
case 'image/svg+xml':
$bRet = true;
break;
}
return $bRet;
}
/**
* Downloads a document to the browser, either as 'inline' or 'attachment'
*
* @param WebPage $oPage The web page for the output
* @param string $sClass Class name of the object
* @param mixed $id Identifier of the object
* @param string $sAttCode Name of the attribute containing the document to download
* @param string $sContentDisposition Either 'inline' or 'attachment'
* @param string $sSecretField The attcode of the field containing a "secret" to be provided in order to retrieve the file
* @param string $sSecretValue The value of the secret to be compared with the value of the attribute $sSecretField
*
* @return void
*/
public static function DownloadDocument(WebPage $oPage, $sClass, $id, $sAttCode, $sContentDisposition = 'attachment', $sSecretField = null, $sSecretValue = null)
{
try
{
$oObj = MetaModel::GetObject($sClass, $id, false, false);
if (!is_object($oObj))
{
throw new Exception("Invalid id ($id) for class '$sClass' - the object does not exist or you are not allowed to view it");
}
if (($sSecretField != null) && ($oObj->Get($sSecretField) != $sSecretValue))
{
usleep(200);
throw new Exception("Invalid secret for class '$sClass' - the object does not exist or you are not allowed to view it");
}
/** @var \ormDocument $oDocument */
$oDocument = $oObj->Get($sAttCode);
if (is_object($oDocument))
{
$aEventData = array(
'debug_info' => $oDocument->GetFileName(),
'object' => $oObj,
'att_code' => $sAttCode,
'document' => $oDocument,
'content_disposition' => $sContentDisposition,
);
EventService::FireEvent(new EventData(EVENT_DOWNLOAD_DOCUMENT, $sClass, $aEventData));
$oPage->TrashUnexpectedOutput();
$oPage->SetContentType($oDocument->GetMimeType());
$oPage->SetContentDisposition($sContentDisposition,$oDocument->GetFileName());
$oPage->add($oDocument->GetData());
// Update downloads count only when content disposition is set to "attachment" as other disposition are to display the document within the page
if($sContentDisposition === static::ENUM_CONTENT_DISPOSITION_ATTACHMENT) {
$oDocument->IncreaseDownloadsCount();
$oObj->Set($sAttCode, $oDocument);
// $oObj can be a \DBObject or \cmdbAbstractObject so we ahve to protect it
if (method_exists($oObj, 'AllowWrite')) {
$oObj->AllowWrite();
}
$oObj->DBUpdate();
}
}
}
catch(Exception $e)
{
$oPage->p($e->getMessage());
}
}
/**
* @return string
*/
public function GetSignature(): string
{
return md5($this->GetData());
}
}