forked from extern/egroupware
467 lines
15 KiB
PHP
467 lines
15 KiB
PHP
<?php
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/**
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* eGroupWare - SyncML based on Horde 3
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*
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*
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* Using the PEAR Log class (which need to be installed!)
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage horde
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* @author Anthony Mills <amills@pyramid6.com>
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* @author Joerg Lehrke <jlehrke@noc.de>
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* @copyright (c) The Horde Project (http://www.horde.org/)
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* @version $Id$
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*/
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class Horde_SyncML_Sync {
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/**
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* Target, either contacts, notes, events,
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*/
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var $_targetLocURI;
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var $_sourceLocURI;
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var $_locName;
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/**
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* The synchronization method, one of the ALERT_* constants.
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*
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* @var integer
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*/
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var $_syncType;
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/**
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* Return if all commands success.
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*/
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var $globalSuccess;
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/**
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* This is the content type to use to export data.
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*/
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var $preferedContentType;
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/**
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* Optional filter expression for this content.
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*
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* @var string
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*/
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var $_filterExpression = '';
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/**
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* Do have the sync data loaded from the database already?
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*/
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var $syncDataLoaded;
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function &factory($alert) {
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Horde::logMessage('SyncML: new sync for alerttype ' . $alert, __FILE__, __LINE__, PEAR_LOG_DEBUG);
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switch ($alert) {
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case ALERT_TWO_WAY:
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include_once 'Horde/SyncML/Sync/TwoWaySync.php';
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return $sync = new Horde_SyncML_Sync_TwoWaySync();
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case ALERT_SLOW_SYNC:
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include_once 'Horde/SyncML/Sync/SlowSync.php';
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return $sync = new Horde_SyncML_Sync_SlowSync();
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case ALERT_ONE_WAY_FROM_CLIENT:
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include_once 'Horde/SyncML/Sync/OneWayFromClientSync.php';
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return $sync = new Horde_SyncML_Sync_OneWayFromClientSync();
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case ALERT_REFRESH_FROM_CLIENT:
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include_once 'Horde/SyncML/Sync/RefreshFromClientSync.php';
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return $sync = new Horde_SyncML_Sync_RefreshFromClientSync();
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case ALERT_ONE_WAY_FROM_SERVER:
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include_once 'Horde/SyncML/Sync/OneWayFromServerSync.php';
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return $sync = new Horde_SyncML_Sync_OneWayFromServerSync();
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case ALERT_REFRESH_FROM_SERVER:
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include_once 'Horde/SyncML/Sync/RefreshFromServerSync.php';
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return $sync = new Horde_SyncML_Sync_RefreshFromServerSync();
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}
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require_once 'PEAR.php';
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return PEAR::raiseError('Alert ' . $alert . ' not found.');
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}
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function nextSyncCommand($currentCmdID, &$syncCommand, &$output) {
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$result = $this->runSyncCommand($syncCommand);
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return $syncCommand->output($currentCmdID, $output);
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}
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function startSync($currentCmdID, &$output) {
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return $currentCmdID;
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}
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function endSync($currentCmdID, &$output) {
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return $currentCmdID;
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}
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/**
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* Setter for property sourceURI.
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*
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* @param string $sourceURI New value of property sourceLocURI.
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*/
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function setSourceLocURI($sourceURI) {
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$this->_sourceLocURI = $sourceURI;
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}
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/**
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* Setter for property targetURI.
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*
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* @param string $targetURI New value of property targetLocURI.
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*/
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function setTargetLocURI($targetURI) {
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$this->_targetLocURI = $targetURI;
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}
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/**
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* Setter for property syncType.
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*
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* @param integer $syncType New value of property syncType.
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*/
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function setSyncType($syncType) {
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$this->_syncType = $syncType;
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}
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/**
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* Setter for property locName.
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*
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* @param string $locName New value of property locName.
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*/
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function setLocName($locName) {
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$this->_locName = $locName;
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}
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/**
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* Setter for property filterExpression.
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*
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* @param string $expression New value of property filterExpression.
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*/
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function setFilterExpression($expression) {
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$this->_filterExpression = $expression;
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}
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/**
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* Here's where the actual processing of a client-sent Sync
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* Command takes place. Entries are added, deleted or replaced
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* from the server database by using Horde API (Registry) calls.
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*/
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function runSyncCommand(&$command) {
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global $registry;
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$history = $GLOBALS['egw']->contenthistory;
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$state = &$_SESSION['SyncML.state'];
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if ($command->hasMoreData()) {
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Horde::logMessage('SyncML: moreData: TRUE', __FILE__, __LINE__, PEAR_LOG_DEBUG);
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$command->setStatus(RESPONSE_CHUNKED_ITEM_ACCEPTED_AND_BUFFERED);
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return true;
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}
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$type = $this->_targetLocURI;
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$syncml_prefs = $GLOBALS['egw_info']['user']['preferences']['syncml'];
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if (isset($syncml_prefs[$type])) {
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$sync_conflicts = $syncml_prefs[$type];
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} else {
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$sync_conflicts = CONFLICT_SERVER_WINNING;
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}
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$state->setLocName($this->_locName);
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$locName = $state->getLocName();
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$sourceURI = $state->getSourceURI();
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$hordeType = $state->getHordeType($type);
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$refts = $state->getServerAnchorLast($type);
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$state->setTargetURI($type);
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$changes = array();
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// First we get all changes done after the previous sync start
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foreach ($registry->call($hordeType. '/listBy',
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array('action' => 'modify',
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'timestamp' => $refts,
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'type' => $type,
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'filter' => $this->_filterExpression)) as $change) {
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// now we have to remove the ones
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// that came from the last sync with this client
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$guid_ts = $state->getSyncTSforAction($change, 'modify');
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$sync_ts = $state->getChangeTS($type, $change);
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if ($sync_ts && $sync_ts == $guid_ts) {
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// Change was done by us upon request of client.
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Horde::logMessage("SyncML: change: $change ignored, " .
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"came from client", __FILE__, __LINE__, PEAR_LOG_DEBUG);
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continue;
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}
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$changes[] = $change;
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}
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Horde::logMessage('SyncML: runSyncCommand found ' . count($changes) .
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" possible conflicts for $type", __FILE__, __LINE__, PEAR_LOG_DEBUG);
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if(!$contentType = $command->getContentType()) {
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$contentType = $state->getPreferedContentType($type);
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}
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if (($contentType == 'text/x-vcalendar' || $contentType == 'text/calendar')
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&& strpos($command->getContent(), 'BEGIN:VTODO') !== false) {
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$hordeType = 'tasks';
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}
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$syncElementItems = $command->getSyncElementItems();
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foreach($syncElementItems as $syncItem) {
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$guid = false;
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$contentSize = strlen($syncItem->_content);
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if ((($size = $syncItem->getContentSize()) !== false) &&
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($contentSize != $size) &&
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($contentSize + 1 != $size)) {
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Horde::logMessage('SyncML: content size missmatch for LocURI '
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. $syncItem->getLocURI() . ": $contentSize ($size)",
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__FILE__, __LINE__, PEAR_LOG_ERROR);
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$command->setStatus(RESPONSE_SIZE_MISMATCH);
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return false;
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}
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if (is_a($command, 'Horde_SyncML_Command_Sync_Add')) {
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if ($sync_conflicts > CONFLICT_RESOLVED_WITH_DUPLICATE) {
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// We enforce the client not to change anything
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if ($sync_conflicts > CONFLICT_CLIENT_CHANGES_IGNORED) {
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// delete this item from client
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Horde::logMessage('SyncML: Server RO! REMOVE '
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. $syncItem->getLocURI() . ' from client',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$state->addConflictItem($type, '!D' . $syncItem->getLocURI());
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} else {
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Horde::logMessage('SyncML: Server RO! '
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. 'REJECT all client changes',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$state->log('Client-AddReplaceIgnored');
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}
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continue;
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}
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$guid = $registry->call($hordeType . '/import',
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array($state->convertClient2Server($syncItem->getContent(), $contentType), $contentType));
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if (!is_a($guid, 'PEAR_Error') && $guid != false) {
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$ts = $state->getSyncTSforAction($guid, 'add');
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$state->setUID($type, $syncItem->getLocURI(), $guid, $ts);
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$state->log('Client-Add');
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Horde::logMessage('SyncML: added client entry as '
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. $guid, __FILE__, __LINE__, PEAR_LOG_DEBUG);
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} else {
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$state->log('Client-AddFailure');
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Horde::logMessage('SyncML: Error in adding client entry: '
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. $guid->message, __FILE__, __LINE__, PEAR_LOG_ERR);
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}
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} elseif (is_a($command, 'Horde_SyncML_Command_Sync_Delete')) {
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$guid = $state->removeUID($type, $syncItem->getLocURI());
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if (!$guid) {
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// the entry is no longer on the server
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$state->log('Client-DeleteFailure');
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Horde::logMessage('SyncML: Failure deleting client entry, '
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. 'gone already on server!',
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__FILE__, __LINE__, PEAR_LOG_ERR);
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continue;
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}
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if ($sync_conflicts > CONFLICT_RESOLVED_WITH_DUPLICATE) {
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// We enforce the client not to change anything
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if ($sync_conflicts > CONFLICT_CLIENT_CHANGES_IGNORED) {
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Horde::logMessage('SyncML: Server RO! ADD '
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. $guid . ' to client again',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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// $state->addConflictItem($type, $guid);
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} else {
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Horde::logMessage('SyncML: '.
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'Server RO! REJECT all client changes',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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}
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$state->log('Client-DeleteIgnored');
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continue;
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}
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elseif ($sync_conflicts == CONFLICT_RESOLVED_WITH_DUPLICATE &&
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in_array($guid, $changes))
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{
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Horde::logMessage('SyncML: '.
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'Server has updated version to keep',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$state->log('Client-DeleteIgnored');
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continue;
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}
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elseif ($sync_conflicts == CONFLICT_MERGE_DATA)
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{
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Horde::logMessage('SyncML: Server Merge Only: ADD '
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. $guid . ' to client again',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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// $state->addConflictItem($type, $guid);
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$state->log('Client-DeleteIgnored');
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continue;
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}
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Horde::logMessage('SyncML: about to delete entry '
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. $type .' / '. $guid . ' due to client request '
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. $syncItem->getLocURI(), __FILE__, __LINE__, PEAR_LOG_DEBUG);
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if (!is_a($guid, 'PEAR_Error') && $guid != false) {
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$registry->call($hordeType . '/delete', array($guid));
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$ts = $state->getSyncTSforAction($guid, 'delete');
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$state->setUID($type, $syncItem->getLocURI(), $guid, $ts, 1);
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$state->log('Client-Delete');
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Horde::logMessage('SyncML: deleted entry '
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. $guid . ' due to client request',
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__FILE__, __LINE__, PEAR_LOG_DEBUG);
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} else {
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$state->log('Client-DeleteFailure');
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Horde::logMessage('SyncML: Failure deleting client entry, '
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. 'maybe gone already on server. msg: '
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. $guid->message, __FILE__, __LINE__, PEAR_LOG_ERR);
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}
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} elseif (is_a($command, 'Horde_SyncML_Command_Sync_Replace')) {
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$guid = $state->getGlobalUID($type, $syncItem->getLocURI());
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$replace = true;
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$ok = false;
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$merge = false;
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if ($guid)
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{
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Horde::logMessage('SyncML: locuri '. $syncItem->getLocURI() . ' guid ' . $guid , __FILE__, __LINE__, PEAR_LOG_DEBUG);
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if (($sync_conflicts > CONFLICT_RESOLVED_WITH_DUPLICATE) || in_array($guid, $changes))
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{
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Horde::logMessage('SyncML: CONFLICT for locuri '. $syncItem->getLocURI() . ' guid ' . $guid , __FILE__, __LINE__, PEAR_LOG_WARNING);
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switch ($sync_conflicts)
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{
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case CONFLICT_CLIENT_WINNING:
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$command->setStatus(RESPONSE_CONFLICT_RESOLVED_WITH_CLIENT_WINNING);
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break;
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case CONFLICT_SERVER_WINNING:
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Horde::logMessage('SyncML: REJECT client change for locuri ' .
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$syncItem->getLocURI() . ' guid ' . $guid ,
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$ok = true;
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$replace = false;
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$state->log('Client-AddReplaceIgnored');
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break;
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case CONFLICT_MERGE_DATA:
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Horde::logMessage('SyncML: Merge server and client data for locuri ' .
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$syncItem->getLocURI() . ' guid ' . $guid ,
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$merge = true;
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break;
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case CONFLICT_RESOLVED_WITH_DUPLICATE:
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$replace = false;
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break;
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case CONFLICT_CLIENT_CHANGES_IGNORED:
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Horde::logMessage('SyncML: Server RO! REJECT client change for locuri ' .
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$syncItem->getLocURI() . ' guid ' . $guid ,
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$ok = true;
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$replace = false;
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$ts = $state->getSyncTSforAction($guid, 'modify');
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$state->setUID($type, $syncItem->getLocURI(), $guid, $ts);
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$state->log('Client-AddReplaceIgnored');
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break;
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default: // We enforce our data on client
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Horde::logMessage('SyncML: Server RO! UNDO client change for locuri ' .
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$syncItem->getLocURI() . ' guid ' . $guid ,
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$state->addConflictItem($type, $guid);
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$ok = true;
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$replace = false;
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}
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}
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elseif ($sync_conflicts == CONFLICT_MERGE_DATA)
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{
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Horde::logMessage('SyncML: Merge server and client data for locuri ' .
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$syncItem->getLocURI() . ' guid ' . $guid ,
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$merge = true;
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}
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if ($replace)
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{
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// Entry exists: replace/merge with current one.
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$ok = $registry->call($hordeType . '/replace',
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array($guid, $state->convertClient2Server($syncItem->getContent(),
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$contentType), $contentType, $merge));
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if (!is_a($ok, 'PEAR_Error') && $ok != false)
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{
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$ts = $state->getSyncTSforAction($guid, 'modify');
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$state->setUID($type, $syncItem->getLocURI(), $guid, $ts);
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if ($merge)
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{
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Horde::logMessage('SyncML: Merged entry due to client request guid: ' .
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$guid . ' ts: ' . $ts, __FILE__, __LINE__, PEAR_LOG_DEBUG);
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}
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else
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{
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Horde::logMessage('SyncML: replaced entry due to client request guid: ' .
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$guid . ' ts: ' . $ts, __FILE__, __LINE__, PEAR_LOG_DEBUG);
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}
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$state->log('Client-Replace');
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$ok = true;
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}
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else
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{
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// Entry may have been deleted; try adding it.
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$ok = false;
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}
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}
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}
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if (!$ok) {
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// Entry does either not exist in map or database, or should be added due to a conflict
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if ($sync_conflicts > CONFLICT_RESOLVED_WITH_DUPLICATE) {
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// We enforce the client not to change anything
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if ($sync_conflicts > CONFLICT_CLIENT_CHANGES_IGNORED) {
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// delete this item from client
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Horde::logMessage('SyncML: Server RO! REMOVE ' . $syncItem->getLocURI() . ' from client',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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$state->addConflictItem($type, '!D' . $syncItem->getLocURI());
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} else {
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Horde::logMessage('SyncML: Server RO! REJECT all client changes',
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__FILE__, __LINE__, PEAR_LOG_WARNING);
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}
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continue;
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}
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Horde::logMessage('SyncML: try to add contentype '
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. $contentType . ' for locuri ' . $syncItem->getLocURI(),
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__FILE__, __LINE__, PEAR_LOG_DEBUG);
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//continue;
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$oguid = $guid;
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$guid = $registry->call($hordeType . '/import',
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array($state->convertClient2Server($syncItem->getContent(), $contentType), $contentType, $guid));
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if (!is_a($guid, 'PEAR_Error')) {
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if ($oguid != $guid) {
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// We add a new entry
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$ts = $state->getSyncTSforAction($guid, 'add');
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Horde::logMessage('SyncML: added entry '
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. $guid . ' from client',
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__FILE__, __LINE__, PEAR_LOG_DEBUG);
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$state->log('Client-Add');
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} else {
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// We replaced an entry
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$ts = $state->getSyncTSforAction($guid, 'modify');
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Horde::logMessage('SyncML: replaced entry '
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. $guid . ' from client',
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__FILE__, __LINE__, PEAR_LOG_DEBUG);
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$state->log('Client-Replace');
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}
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$state->setUID($type, $syncItem->getLocURI(), $guid, $ts);
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} else {
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Horde::logMessage('SyncML: Error in replacing/'
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. 'add client entry:' . $guid->message,
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__FILE__, __LINE__, PEAR_LOG_ERR);
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$state->log('Client-AddFailure');
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}
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}
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}
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}
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return $guid;
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}
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}
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