/**
* Invalidates all pingable flags for all folders.
*
* @access public
* @return boolean
*/
public static function InvalidatePingableFlags()
{
ZLog::Write(LOGLEVEL_DEBUG, "SyncCollections::InvalidatePingableFlags(): Invalidating now");
try {
$sc = new SyncCollections();
$sc->LoadAllCollections();
foreach ($sc as $folderid => $spa) {
if ($spa->GetPingableFlag() == true) {
$spa->DelPingableFlag();
$sc->SaveCollection($spa);
}
}
return true;
} catch (ZPushException $e) {
}
return false;
}
/**
* Handles the Ping command
*
* @param int $commandCode
*
* @access public
* @return boolean
*/
public function Handle($commandCode)
{
$interval = defined('PING_INTERVAL') && PING_INTERVAL > 0 ? PING_INTERVAL : 30;
$pingstatus = false;
$fakechanges = array();
$foundchanges = false;
// Contains all requested folders (containers)
$sc = new SyncCollections();
// Load all collections - do load states and check permissions
try {
$sc->LoadAllCollections(true, true, true);
} catch (StateNotFoundException $snfex) {
$pingstatus = SYNC_PINGSTATUS_FOLDERHIERSYNCREQUIRED;
self::$topCollector->AnnounceInformation("StateNotFoundException: require HierarchySync", true);
} catch (StateInvalidException $snfex) {
// we do not have a ping status for this, but SyncCollections should have generated fake changes for the folders which are broken
$fakechanges = $sc->GetChangedFolderIds();
$foundchanges = true;
self::$topCollector->AnnounceInformation("StateInvalidException: force sync", true);
} catch (StatusException $stex) {
$pingstatus = SYNC_PINGSTATUS_FOLDERHIERSYNCREQUIRED;
self::$topCollector->AnnounceInformation("StatusException: require HierarchySync", true);
}
ZLog::Write(LOGLEVEL_DEBUG, sprintf("HandlePing(): reference PolicyKey for PING: %s", $sc->GetReferencePolicyKey()));
// receive PING initialization data
if (self::$decoder->getElementStartTag(SYNC_PING_PING)) {
self::$topCollector->AnnounceInformation("Processing PING data");
ZLog::Write(LOGLEVEL_DEBUG, "HandlePing(): initialization data received");
if (self::$decoder->getElementStartTag(SYNC_PING_LIFETIME)) {
$sc->SetLifetime(self::$decoder->getElementContent());
self::$decoder->getElementEndTag();
}
if (($el = self::$decoder->getElementStartTag(SYNC_PING_FOLDERS)) && $el[EN_FLAGS] & EN_FLAGS_CONTENT) {
// remove PingableFlag from all collections
foreach ($sc as $folderid => $spa) {
$spa->DelPingableFlag();
}
while (self::$decoder->getElementStartTag(SYNC_PING_FOLDER)) {
while (1) {
if (self::$decoder->getElementStartTag(SYNC_PING_SERVERENTRYID)) {
$folderid = self::$decoder->getElementContent();
self::$decoder->getElementEndTag();
}
if (self::$decoder->getElementStartTag(SYNC_PING_FOLDERTYPE)) {
$class = self::$decoder->getElementContent();
self::$decoder->getElementEndTag();
}
$e = self::$decoder->peek();
if ($e[EN_TYPE] == EN_TYPE_ENDTAG) {
self::$decoder->getElementEndTag();
break;
}
}
$spa = $sc->GetCollection($folderid);
if (!$spa) {
// The requested collection is not synchronized.
// check if the HierarchyCache is available, if not, trigger a HierarchySync
try {
self::$deviceManager->GetFolderClassFromCacheByID($folderid);
} catch (NoHierarchyCacheAvailableException $nhca) {
ZLog::Write(LOGLEVEL_INFO, sprintf("HandlePing(): unknown collection '%s', triggering HierarchySync", $folderid));
$pingstatus = SYNC_PINGSTATUS_FOLDERHIERSYNCREQUIRED;
}
// Trigger a Sync request because then the device will be forced to resync this folder.
$fakechanges[$folderid] = 1;
$foundchanges = true;
} else {
if ($class == $spa->GetContentClass()) {
$spa->SetPingableFlag(true);
ZLog::Write(LOGLEVEL_DEBUG, sprintf("HandlePing(): using saved sync state for '%s' id '%s'", $spa->GetContentClass(), $folderid));
}
}
}
if (!self::$decoder->getElementEndTag()) {
return false;
}
}
if (!self::$decoder->getElementEndTag()) {
return false;
}
// save changed data
foreach ($sc as $folderid => $spa) {
$sc->SaveCollection($spa);
}
} else {
// if no ping initialization data was sent, we check if we have pingable folders
// if not, we indicate that there is nothing to do.
if (!$sc->PingableFolders()) {
$pingstatus = SYNC_PINGSTATUS_FAILINGPARAMS;
ZLog::Write(LOGLEVEL_DEBUG, "HandlePing(): no pingable folders found and no initialization data sent. Returning SYNC_PINGSTATUS_FAILINGPARAMS.");
}
}
// Check for changes on the default LifeTime, set interval and ONLY on pingable collections
try {
if (!$pingstatus && empty($fakechanges)) {
$foundchanges = $sc->CheckForChanges($sc->GetLifetime(), $interval, true);
}
} catch (StatusException $ste) {
switch ($ste->getCode()) {
case SyncCollections::ERROR_NO_COLLECTIONS:
$pingstatus = SYNC_PINGSTATUS_FAILINGPARAMS;
break;
case SyncCollections::ERROR_WRONG_HIERARCHY:
$pingstatus = SYNC_PINGSTATUS_FOLDERHIERSYNCREQUIRED;
self::$deviceManager->AnnounceProcessStatus(false, $pingstatus);
break;
case SyncCollections::OBSOLETE_CONNECTION:
$foundchanges = false;
break;
}
}
self::$encoder->StartWBXML();
self::$encoder->startTag(SYNC_PING_PING);
self::$encoder->startTag(SYNC_PING_STATUS);
if (isset($pingstatus) && $pingstatus) {
self::$encoder->content($pingstatus);
} else {
self::$encoder->content($foundchanges ? SYNC_PINGSTATUS_CHANGES : SYNC_PINGSTATUS_HBEXPIRED);
}
self::$encoder->endTag();
if (!$pingstatus) {
self::$encoder->startTag(SYNC_PING_FOLDERS);
if (empty($fakechanges)) {
$changes = $sc->GetChangedFolderIds();
} else {
$changes = $fakechanges;
}
foreach ($changes as $folderid => $changecount) {
if ($changecount > 0) {
self::$encoder->startTag(SYNC_PING_FOLDER);
self::$encoder->content($folderid);
self::$encoder->endTag();
if (empty($fakechanges)) {
self::$topCollector->AnnounceInformation(sprintf("Found change in %s", $sc->GetCollection($folderid)->GetContentClass()), true);
}
}
}
self::$encoder->endTag();
}
self::$encoder->endTag();
return true;
}
/**
* Synchronizes a folder to the output stream. Changes for this folders are expected.
*
* @param SyncCollections $sc
* @param SyncParameters $spa
* @param IExportChanges $exporter Fully configured exporter for this folder
* @param int $changecount Amount of changes expected
* @param ImportChangesStream $streamimporter Output stream
* @param int $status current status of the folder processing
* @param string $newFolderStat the new folder stat to be set if everything was exported
*
* @throws StatusException
* @return int sync status code
*/
private function syncFolder($sc, $spa, $exporter, $changecount, $streamimporter, $status, $newFolderStat)
{
$actiondata = $sc->GetParameter($spa, "actiondata");
// send the WBXML start tags (if not happened already)
$this->sendFolderStartTag();
self::$encoder->startTag(SYNC_FOLDER);
if ($spa->HasContentClass()) {
ZLog::Write(LOGLEVEL_DEBUG, sprintf("Folder type: %s", $spa->GetContentClass()));
// AS 12.0 devices require content class
if (Request::GetProtocolVersion() < 12.1) {
self::$encoder->startTag(SYNC_FOLDERTYPE);
self::$encoder->content($spa->GetContentClass());
self::$encoder->endTag();
}
}
self::$encoder->startTag(SYNC_SYNCKEY);
if ($status == SYNC_STATUS_SUCCESS && $spa->HasNewSyncKey()) {
self::$encoder->content($spa->GetNewSyncKey());
} else {
self::$encoder->content($spa->GetSyncKey());
}
self::$encoder->endTag();
self::$encoder->startTag(SYNC_FOLDERID);
self::$encoder->content($spa->GetFolderId());
self::$encoder->endTag();
self::$encoder->startTag(SYNC_STATUS);
self::$encoder->content($status);
self::$encoder->endTag();
// announce failing status to the process loop detection
if ($status !== SYNC_STATUS_SUCCESS) {
self::$deviceManager->AnnounceProcessStatus($spa->GetFolderId(), $status);
}
// Output IDs and status for incoming items & requests
if ($status == SYNC_STATUS_SUCCESS && (!empty($actiondata["clientids"]) || !empty($actiondata["modifyids"]) || !empty($actiondata["removeids"]) || !empty($actiondata["fetchids"]))) {
self::$encoder->startTag(SYNC_REPLIES);
// output result of all new incoming items
foreach ($actiondata["clientids"] as $clientid => $serverid) {
self::$encoder->startTag(SYNC_ADD);
self::$encoder->startTag(SYNC_CLIENTENTRYID);
self::$encoder->content($clientid);
self::$encoder->endTag();
if ($serverid) {
self::$encoder->startTag(SYNC_SERVERENTRYID);
self::$encoder->content($serverid);
self::$encoder->endTag();
}
self::$encoder->startTag(SYNC_STATUS);
self::$encoder->content(isset($actiondata["statusids"][$clientid]) ? $actiondata["statusids"][$clientid] : SYNC_STATUS_CLIENTSERVERCONVERSATIONERROR);
self::$encoder->endTag();
self::$encoder->endTag();
}
// loop through modify operations which were not a success, send status
foreach ($actiondata["modifyids"] as $serverid) {
if (isset($actiondata["statusids"][$serverid]) && $actiondata["statusids"][$serverid] !== SYNC_STATUS_SUCCESS) {
self::$encoder->startTag(SYNC_MODIFY);
self::$encoder->startTag(SYNC_SERVERENTRYID);
self::$encoder->content($serverid);
self::$encoder->endTag();
self::$encoder->startTag(SYNC_STATUS);
self::$encoder->content($actiondata["statusids"][$serverid]);
self::$encoder->endTag();
self::$encoder->endTag();
}
}
// loop through remove operations which were not a success, send status
foreach ($actiondata["removeids"] as $serverid) {
if (isset($actiondata["statusids"][$serverid]) && $actiondata["statusids"][$serverid] !== SYNC_STATUS_SUCCESS) {
self::$encoder->startTag(SYNC_REMOVE);
self::$encoder->startTag(SYNC_SERVERENTRYID);
self::$encoder->content($serverid);
self::$encoder->endTag();
self::$encoder->startTag(SYNC_STATUS);
self::$encoder->content($actiondata["statusids"][$serverid]);
self::$encoder->endTag();
self::$encoder->endTag();
}
}
if (!empty($actiondata["fetchids"])) {
self::$topCollector->AnnounceInformation(sprintf("Fetching %d objects ", count($actiondata["fetchids"])), $this->singleFolder);
$this->saveMultiFolderInfo("fetching", count($actiondata["fetchids"]));
}
foreach ($actiondata["fetchids"] as $id) {
$data = false;
try {
$fetchstatus = SYNC_STATUS_SUCCESS;
// if this is an additional folder the backend has to be setup correctly
if (!self::$backend->Setup(ZPush::GetAdditionalSyncFolderStore($spa->GetBackendFolderId()))) {
throw new StatusException(sprintf("HandleSync(): could not Setup() the backend to fetch in folder id %s/%s", $spa->GetFolderId(), $spa->GetBackendFolderId()), SYNC_STATUS_OBJECTNOTFOUND);
}
$data = self::$backend->Fetch($spa->GetBackendFolderId(), $id, $spa->GetCPO());
// check if the message is broken
if (ZPush::GetDeviceManager(false) && ZPush::GetDeviceManager()->DoNotStreamMessage($id, $data)) {
ZLog::Write(LOGLEVEL_DEBUG, sprintf("HandleSync(): message not to be streamed as requested by DeviceManager, id = %s", $id));
$fetchstatus = SYNC_STATUS_CLIENTSERVERCONVERSATIONERROR;
}
} catch (StatusException $stex) {
$fetchstatus = $stex->getCode();
}
self::$encoder->startTag(SYNC_FETCH);
self::$encoder->startTag(SYNC_SERVERENTRYID);
self::$encoder->content($id);
self::$encoder->endTag();
self::$encoder->startTag(SYNC_STATUS);
self::$encoder->content($fetchstatus);
self::$encoder->endTag();
if ($data !== false && $status == SYNC_STATUS_SUCCESS) {
self::$encoder->startTag(SYNC_DATA);
$data->Encode(self::$encoder);
self::$encoder->endTag();
} else {
ZLog::Write(LOGLEVEL_WARN, sprintf("Unable to Fetch '%s'", $id));
}
self::$encoder->endTag();
}
self::$encoder->endTag();
}
if ($sc->GetParameter($spa, "getchanges") && $spa->HasFolderId() && $spa->HasContentClass() && $spa->HasSyncKey()) {
$moreAvailableSent = false;
$windowSize = self::$deviceManager->GetWindowSize($spa->GetFolderId(), $spa->GetUuid(), $spa->GetUuidCounter(), $changecount);
// limit windowSize to the max available limit of the global window size left
$globallyAvailable = $sc->GetGlobalWindowSize() - $this->globallyExportedItems;
if ($changecount > $globallyAvailable && $windowSize > $globallyAvailable) {
ZLog::Write(LOGLEVEL_DEBUG, sprintf("HandleSync(): Limit window size to %d as the global window size limit will be reached", $globallyAvailable));
$windowSize = $globallyAvailable;
}
// send <MoreAvailable/> if there are more changes than fit in the folder windowsize
// or there is a move state (another sync should be done afterwards)
if ($changecount > $windowSize || $spa->GetMoveState() !== false) {
self::$encoder->startTag(SYNC_MOREAVAILABLE, false, true);
$moreAvailableSent = true;
$spa->DelFolderStat();
}
}
// Stream outgoing changes
if ($status == SYNC_STATUS_SUCCESS && $sc->GetParameter($spa, "getchanges") == true && $windowSize > 0 && !!$exporter) {
self::$topCollector->AnnounceInformation(sprintf("Streaming data of %d objects", $changecount > $windowSize ? $windowSize : $changecount));
// Output message changes per folder
self::$encoder->startTag(SYNC_PERFORM);
$n = 0;
WBXMLDecoder::ResetInWhile("syncSynchronize");
while (WBXMLDecoder::InWhile("syncSynchronize")) {
try {
$progress = $exporter->Synchronize();
if (!is_array($progress)) {
break;
}
$n++;
if ($n % 10 == 0) {
self::$topCollector->AnnounceInformation(sprintf("Streamed data of %d objects out of %d", $n, $changecount > $windowSize ? $windowSize : $changecount));
}
} catch (SyncObjectBrokenException $mbe) {
$brokenSO = $mbe->GetSyncObject();
if (!$brokenSO) {
ZLog::Write(LOGLEVEL_ERROR, sprintf("HandleSync(): Catched SyncObjectBrokenException but broken SyncObject not available. This should be fixed in the backend."));
} else {
if (!isset($brokenSO->id)) {
$brokenSO->id = "Unknown ID";
ZLog::Write(LOGLEVEL_ERROR, sprintf("HandleSync(): Catched SyncObjectBrokenException but no ID of object set. This should be fixed in the backend."));
}
self::$deviceManager->AnnounceIgnoredMessage($spa->GetFolderId(), $brokenSO->id, $brokenSO);
}
} catch (StatusException $stex) {
$status = $stex->getCode();
// during export we found out that the states should be thrown away (ZP-623)
if ($status == SYNC_STATUS_INVALIDSYNCKEY) {
self::$deviceManager->ForceFolderResync($spa->GetFolderId());
break;
}
}
if ($n >= $windowSize || Request::IsRequestTimeoutReached()) {
ZLog::Write(LOGLEVEL_DEBUG, sprintf("HandleSync(): Exported maxItems of messages: %d / %d", $n, $changecount));
break;
}
}
// $progress is not an array when exporting the last message
// so we get the number to display from the streamimporter if it's available
if (!!$streamimporter) {
$n = $streamimporter->GetImportedMessages();
}
self::$encoder->endTag();
// log the request timeout
if (Request::IsRequestTimeoutReached()) {
ZLog::Write(LOGLEVEL_DEBUG, "HandleSync(): Stopping export as maximum request timeout is almost reached!");
// Send a <MoreAvailable/> tag if we reached the request timeout, there are more changes and a moreavailable was not already send
if (!$moreAvailableSent && $n > $windowSize) {
self::$encoder->startTag(SYNC_MOREAVAILABLE, false, true);
$spa->DelFolderStat();
$moreAvailableSent = true;
}
}
self::$topCollector->AnnounceInformation(sprintf("Outgoing %d objects%s", $n, $n >= $windowSize ? " of " . $changecount : ""), $this->singleFolder);
$this->saveMultiFolderInfo("outgoing", $n);
$this->saveMultiFolderInfo("queued", $changecount);
$this->globallyExportedItems += $n;
// update folder status, if there is something set
if ($spa->GetFolderSyncRemaining() && $changecount > 0) {
$spa->SetFolderSyncRemaining($changecount);
}
// changecount is initialized with 'false', so 0 means no changes!
if ($changecount === 0 || $changecount !== false && $changecount <= $windowSize) {
self::$deviceManager->SetFolderSyncStatus($spa->GetFolderId(), DeviceManager::FLD_SYNC_COMPLETED);
// we should update the folderstat, but we recheck to see if it changed. If so, it's not updated to force another sync
$newFolderStatAfterExport = self::$backend->GetFolderStat(ZPush::GetAdditionalSyncFolderStore($spa->GetBackendFolderId()), $spa->GetBackendFolderId());
if ($newFolderStat === $newFolderStatAfterExport) {
$this->setFolderStat($spa, $newFolderStat);
} else {
ZLog::Write(LOGLEVEL_DEBUG, "Sync() Folderstat differs after export, force another exporter run.");
}
} else {
self::$deviceManager->SetFolderSyncStatus($spa->GetFolderId(), DeviceManager::FLD_SYNC_INPROGRESS);
}
}
self::$encoder->endTag();
// Save the sync state for the next time
if ($spa->HasNewSyncKey()) {
self::$topCollector->AnnounceInformation("Saving state");
try {
if (isset($exporter) && $exporter) {
$state = $exporter->GetState();
// update the move state (it should be gone now)
list($moveState, ) = $exporter->GetMoveStates();
$spa->SetMoveState($moveState);
} else {
if ($sc->GetParameter($spa, "state") !== null) {
$state = $sc->GetParameter($spa, "state");
} else {
if (!$spa->HasSyncKey()) {
$state = "";
}
}
}
} catch (StatusException $stex) {
$status = $stex->getCode();
}
if (isset($state) && $status == SYNC_STATUS_SUCCESS) {
self::$deviceManager->GetStateManager()->SetSyncState($spa->GetNewSyncKey(), $state, $spa->GetFolderId());
} else {
ZLog::Write(LOGLEVEL_ERROR, sprintf("HandleSync(): error saving '%s' - no state information available", $spa->GetNewSyncKey()));
}
}
// save SyncParameters
if ($status == SYNC_STATUS_SUCCESS && empty($actiondata["fetchids"])) {
$sc->SaveCollection($spa);
}
return $status;
}
