PhysicalDocumentManager.inc
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<?php
/**
* $Id$
*
* Contains all functions required to upload, alter and
* delete a physical document.
*
* The contents of this file are subject to the KnowledgeTree Public
* License Version 1.1.2 ("License"); You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.knowledgetree.com/KPL
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights and
* limitations under the License.
*
* All copies of the Covered Code must include on each user interface screen:
* (i) the "Powered by KnowledgeTree" logo and
* (ii) the KnowledgeTree copyright notice
* in the same form as they appear in the distribution. See the License for
* requirements.
*
* The Original Code is: KnowledgeTree Open Source
*
* The Initial Developer of the Original Code is The Jam Warehouse Software
* (Pty) Ltd, trading as KnowledgeTree.
* Portions created by The Jam Warehouse Software (Pty) Ltd are Copyright
* (C) 2007 The Jam Warehouse Software (Pty) Ltd;
* All Rights Reserved.
* Contributor( s): ______________________________________
*/
// used for well-known MIME deterministic techniques
if (!extension_loaded('fileinfo')) {
@dl('fileinfo.' . PHP_SHLIB_SUFFIX);
}
require_once(KT_LIB_DIR . '/mime.inc.php');
class PhysicalDocumentManager {
/**
* Stream a document to a client over http
*
* @param Primary key of document to stream
*
* @return int number of bytes read from file on success or false otherwise;
*
* @todo investigate possible problem in MSIE 5.5 concerning Content-Disposition header
*/
function downloadPhysicalDocument($iDocumentID) {
//get the document
$oDocument = & Document::get($iDocumentID);
//get the path to the document on the server
$sDocumentFileSystemPath = $oDocument->getPath();
if (file_exists($sDocumentFileSystemPath)) {
//set the correct headers
header("Content-Type: " .
KTMime::getMimeTypeName($oDocument->getMimeTypeID()));
header("Content-Length: ". $oDocument->getFileSize());
header("Content-Disposition: attachment; filename=\"" . $oDocument->getFileName() . "\"");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: must-revalidate");
header("Content-Location: ".$oDocument->getFileName());
readfile($sDocumentFileSystemPath);
} else {
return false;
}
}
/**
* Stream a particular version of a document to a client over http
*
* @param Primary key of document to stream
* @param Primary key of document to stream
* @return int number of bytes read from file on success or false otherwise;
*/
function downloadVersionedPhysicalDocument($iDocumentID, $sVersion) {
//get the document
$oDocument = & Document::get($iDocumentID);
//get the path to the document on the server
$sDocumentFileSystemPath = $oDocument->getPath() . "-$sVersion";
if (file_exists($sDocumentFileSystemPath)) {
//set the correct headers
header("Content-Type: " .
KTMime::getMimeTypeName($oDocument->getMimeTypeID()));
header("Content-Length: ". filesize($sDocumentFileSystemPath));
// prefix the filename presented to the browser to preserve the document extension
header('Content-Disposition: attachment; filename="' . "$sVersion-" . $oDocument->getFileName() . '"');
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: must-revalidate");
header("Content-Location: ".$oDocument->getFileName());
readfile($sDocumentFileSystemPath);
} else {
return false;
}
}
/**
* Move a document to a new folder
*
* return boolean true on successful move, false otherwhise
*/
function moveDocument($sOldDocumentPath, $oDocument, $oFolder) {
global $default;
// current document path
$sCurrentPath = $sOldDocumentPath;
// the destination path
$sDestinationFolderPath = Folder::getFolderPath($oFolder->getID()) . $oDocument->getFileName();
// find all the previous versions of this document and move them
// ie. interrogate transaction history for all CHECKIN transactions and retrieve the versions
// FIXME: refactor array getOldVersionPaths($iDocumentID)??
$sql = $default->db;
$sQuery = "SELECT DISTINCT version FROM $default->document_transactions_table WHERE document_id = ? AND transaction_id = ?";/*ok*/
$aParams = array($oDocument->getID(), CHECKOUT);
$result = $sql->query(array($sQuery, $aParams));
if ($result) {
while ($sql->next_record()) {
$sVersion = $sql->f("version");
if ($sVersion <> $oDocument->getVersion()) {
$sSourcePath = $sCurrentPath . "-" . $sVersion;
$sDestinationPath = $sDestinationFolderPath . "-" . $sVersion;
// move it to the new folder
$default->log->info("PhysicalDocumentManager::moveDocument moving $sSourcePath to $sDestinationPath");
if (!PhysicalDocumentManager::move($sSourcePath, $sDestinationPath)) {
// FIXME: can't bail now since we don't have transactions- so we doggedly continue deleting and logging errors
$default->log->error("PhysicalDocumentManager::moveDocument error moving $sSourcePath to $sDestinationPath; documentID=" . $oDocument->getID() . "; folderID=" . $oFolder->getID());
}
}
}
} else {
$default->log->error("PhysicalDocumentManager::moveDocument error looking up document versions, id=" . $oDocument->getID());
}
// now move the current version
if (PhysicalDocumentManager::move($sCurrentPath, $sDestinationFolderPath)) {
return true;
} else {
$default->log->error("PhysicalDocumentManager::moveDocument couldn't move $sCurrentPath to $sDestinationFolderPath, documentID=" . $oDocument->getID());
return false;
}
}
/**
* Move a file
*
* @param string source path
* @param string destination path
*/
function move($sOldDocumentPath, $sNewDocumentPath) {
global $default;
if (file_exists($sOldDocumentPath)) {
//copy the file to the new destination
if (copy($sOldDocumentPath, $sNewDocumentPath)) {
//delete the old one
@unlink($sOldDocumentPath);
return true;
} else {
return false;
}
} else {
return false;
}
}
/**
* Deletes a document- moves it to the Deleted/ folder
*
* return boolean true on successful move, false otherwhise
*/
function delete($oDocument) {
global $default;
// current document path
$sCurrentPath = $oDocument->getPath();
// check if the deleted folder exists and create it if not
$sDeletedPrefix = $default->documentRoot . "/Deleted";
if (!file_exists($sDeletedPrefix)) {
mkdir($sDeletedPrefix, 0755);
}
// move the file to the deleted folder, prefixed by its document id
$sDeletedPrefix = $default->documentRoot . "/Deleted/" . $oDocument->getID() . "-" . $oDocument->getFileName();
// find all the previous versions of this document and move them
// ie. interrogate transaction history for all CHECKIN transactions and retrieve the versions
// FIXME: refactor
$sql = $default->db;
$sQuery = "SELECT DISTINCT version FROM $default->document_transactions_table WHERE document_id = ? AND transaction_namespace = ?";/*ok*/
$aParams = array($oDocument->getID(), 'ktcore.transactions.check_out');
$result = $sql->query(array($sQuery, $aParams));
if ($result) {
while ($sql->next_record()) {
$sVersion = $sql->f("version");
if ($sVersion <> $oDocument->getVersion()) {
$sVersionedPath = $sCurrentPath . "-" . $sVersion;
$sDeletedPath = $sDeletedPrefix . "-" . $sVersion;
// move it to the deleted folder
$default->log->info("PhysicalDocumentManager::delete moving $sVersionedPath to $sDeletedPath");
if (!PhysicalDocumentManager::move($sVersionedPath, $sDeletedPath)) {
$default->log->error("PhysicalDocumentManager::delete error moving $sVersionedPath to $sDeletedPath; documentID=" . $oDocument->getID());
// FIXME: can't bail now since we don't have transactions- so we doggedly continue deleting and logging errors
}
}
}
} else {
$default->log->error("PhysicalDocumentManager::delete error looking up document versions, id=" . $oDocument->getID());
}
// now move the current version
if (PhysicalDocumentManager::move($sCurrentPath, $sDeletedPrefix)) {
return true;
} else {
$default->log->error("PhysicalDocumentManager::delete couldn't move $sCurrentPath to $sDeletedPath, documentID=" . $oDocument->getID());
return false;
}
}
/**
* Completely remove a document from the Deleted/ folder
*
* return boolean true on successful move, false otherwhise
*/
function expunge($oDocument) {
global $default;
// deleted document path
$sDeletedPrefix = $default->documentRoot . "/Deleted/" . $oDocument->getID() . "-" . $oDocument->getFileName();
// find all the previous versions of this document and delete them
// ie. interrogate transaction history for all CHECKIN transactions and retrieve the versions
// FIXME: refactor
$sql = $default->db;
$sQuery = "SELECT DISTINCT version FROM $default->document_transactions_table WHERE document_id = ? AND transaction_id = ?";/*ok*/
$aParams = array($oDocument->getID(), CHECKOUT);
$result = $sql->query(array($sQuery, $aParams));
if ($result) {
while ($sql->next_record()) {
$sVersion = $sql->f("version");
if ($sVersion <> $oDocument->getVersion()) {
$sExpungePath = $sDeletedPrefix . "-" . $sVersion;
// zap it
$default->log->info("PhysicalDocumentManager::expunge rm'ing $sExpungePath");
if (file_exists($sExpungePath)) {
if (!@unlink($sExpungePath)) {
$default->log->error("PhysicalDocumentManager::expunge error deleting $sExpungePath; documentID=" . $oDocument->getID());
// FIXME: can't bail now since we don't have transactions- so we doggedly continue deleting and logging errors
}
} else {
$default->log->error("PhysicalDocumentManager::expunge can't rm $sExpungePath because it doesn't exist");
}
}
}
} else {
$default->log->error("PhysicalDocumentManager::expunge error looking up document versions, id=" . $oDocument->getID());
}
if (file_exists($sDeletedPrefix)) {
// now delete the current version
if (@unlink($sDeletedPrefix)) {
$default->log->info("PhysicalDocumentManager::expunge unlinkied $sDeletedPrefix");
return true;
} else {
$default->log->info("PhysicalDocumentManager::expunge couldn't unlink $sDeletedPrefix");
if (file_exists($sDeletedPrefix)) {
return false;
} else {
return true;
}
}
} else {
$default->log->info("PhysicalDocumentManager::expunge can't rm $sDeletedPrefix because it doesn't exist");
return true;
}
}
/**
* Restore a document from the Deleted/ folder to the specified folder
*
* return boolean true on successful move, false otherwhise
*/
function restore($oDocument) {
global $default;
// deleted document path (includes previous versions)
$sDeletedPath = $default->documentRoot . "/Deleted/" . $oDocument->getID() . "-" . $oDocument->getFileName();
// NEW FOLDER REALLY NEEDS TO BE /
if (is_null($oDocument->getFolderID())) {
$oDocument->setFolderID(1);
}
//var_dump($oDocument->getFolderID());
$sRestorePath = Folder::getFolderPath($oDocument->getFolderID()) . "/" . $oDocument->getFileName();
// find all the previous versions of this document and move them
// ie. interrogate transaction history for all CHECKIN transactions and retrieve the versions
// FIXME: refactor
$sql = $default->db;
$sQuery = "SELECT DISTINCT version FROM $default->document_transactions_table WHERE document_id = ? AND transaction_id = ?";/*ok*/
$aParams = array($oDocument->getID(), CHECKOUT);
$result = $sql->query(array($sQuery, $aParams));
if ($result) {
while ($sql->next_record()) {
$sVersion = $sql->f("version");
if ($sVersion <> $oDocument->getVersion()) {
$sVersionedDeletedPath = $sDeletedPath . "-" . $sVersion;
$sVersionedRestorePath = $sRestorePath . "-" . $sVersion;
// move it to the new folder
$default->log->info("PhysicalDocumentManager::restore moving $sVersionedDeletedPath to $sVersionedRestorePath");
if (!PhysicalDocumentManager::move($sVersionedDeletedPath, $sVersionedRestorePath)) {
$default->log->error("PhysicalDocumentManager::restore error moving $sVersionedDeletedPath to $sVersionedRestorePath; documentID=" . $oDocument->getID());
// FIXME: can't bail now since we don't have transactions- so we doggedly continue restoring and logging errors
}
}
}
} else {
$default->log->error("PhysicalDocumentManager::expunge error looking up document versions, id=" . $oDocument->getID());
}
// now move the current version
if (PhysicalDocumentManager::move($sDeletedPath, $sRestorePath)) {
return true;
} else {
$default->log->error("PhysicalDocumentManager::restore couldn't move $sDeletedPath to $sRestorePath, documentID=" . $oDocument->getID());
return false;
}
}
/**
* View a document using an inline viewer
*
* @param Primary key of document to view
*
* @return int number of bytes read from file on success or false otherwise;
*
* @todo investigate possible problem in MSIE 5.5 concerning Content-Disposition header
*/
function inlineViewPhysicalDocument($iDocumentID) {
//get the document
$oDocument = & Document::get($iDocumentID);
//get the path to the document on the server
$sDocumentFileSystemPath = $oDocument->getPath();
if (file_exists($sDocumentFileSystemPath)) {
header("Content-Type: application/octet-stream");
header("Content-Length: ". $oDocument->getFileSize());
// prefix the filename presented to the browser to preserve the document extension
header('Content-Disposition: inline; filename="' . $oDocument->getFileName() . '"');
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: must-revalidate");
header("Content-Location: ".$oDocument->getFileName());
return readfile($sDocumentFileSystemPath);
} else {
return false;
}
}
/**
* Get the uploaded file information and place it into a document object
*
* @param Array containing uploaded file information (use $aFileArray)
* par Primary key of folder into which document will be placed
*
* @return Document Document object containing uploaded file information
*/
function & createDocumentFromUploadedFile($aFileArray, $iFolderID) {
//get the uploaded document information and put it into a document object
$oDocument = & new Document($aFileArray['name'], $aFileArray['name'], $aFileArray['size'], $_SESSION["userID"], KTMime::getMimeTypeID($aFileArray['type'], $aFileArray['name']), $iFolderID);
return $oDocument;
}
}
?>