Added support for rfc7889 and impoved rfc8474

snappymail/v/0.0.0/app/libraries/MailSo/Imap/Enumerations/FolderResponseStatus.php

@@ -26,4 +26,8 @@ abstract class FolderResponseStatus
 	const UNSEEN = 'UNSEEN';
 	// rfc4551
 	const HIGHESTMODSEQ = 'HIGHESTMODSEQ';
+	// rfc7889
+	const APPENDLIMIT = 'APPENDLIMIT';
+	// rfc8474
+	const MAILBOXID = 'MAILBOXID';
 }

snappymail/v/0.0.0/app/libraries/MailSo/Imap/Enumerations/FolderStatus.php

@@ -26,6 +26,8 @@ abstract class FolderStatus
 	const UNSEEN = 'UNSEEN';
 	// rfc4551
 	const HIGHESTMODSEQ = 'HIGHESTMODSEQ';
+	// rfc7889
+	const APPENDLIMIT = 'APPENDLIMIT';
 	// rfc8474
 	const MAILBOXID = 'MAILBOXID';
 }

snappymail/v/0.0.0/app/libraries/MailSo/Imap/FetchResponse.php

@@ -54,12 +54,12 @@ class FetchResponse
 	{
 		$oResult = null;
 		$aEmails = $this->GetFetchEnvelopeValue($iIndex);
-		if (is_array($aEmails) && 0 < count($aEmails))
+		if (\is_array($aEmails) && \count($aEmails))
 		{
 			$oResult = new \MailSo\Mime\EmailCollection;
 			foreach ($aEmails as $aEmailItem)
 			{
-				if (is_array($aEmailItem) && 4 === count($aEmailItem))
+				if (\is_array($aEmailItem) && 4 === \count($aEmailItem))
 				{
 					$sDisplayName = \MailSo\Base\Utils::DecodeHeaderValue(
 						self::findEnvelopeIndex($aEmailItem, 0, ''), $sParentCharset);
@@ -70,7 +70,7 @@ class FetchResponse
 					$sLocalPart = self::findEnvelopeIndex($aEmailItem, 2, '');
 					$sDomainPart = self::findEnvelopeIndex($aEmailItem, 3, '');
 
-					if (0 < strlen($sLocalPart) && 0 < strlen($sDomainPart))
+					if (\strlen($sLocalPart) && \strlen($sDomainPart))
 					{
 						$oResult->append(
 							new \MailSo\Mime\Email($sLocalPart.'@'.$sDomainPart, $sDisplayName)
@@ -87,9 +87,9 @@ class FetchResponse
 	{
 		$aBodyStructureArray = $this->GetFetchValue(Enumerations\FetchType::BODYSTRUCTURE);
 
-		if (is_array($aBodyStructureArray))
+		if (\is_array($aBodyStructureArray))
 		{
-			if (0 < strlen($sRfc822SubMimeIndex))
+			if (\strlen($sRfc822SubMimeIndex))
 			{
 				return BodyStructure::NewInstanceFromRfc822SubPart($aBodyStructureArray, $sRfc822SubMimeIndex);
 			}
@@ -100,6 +100,7 @@ class FetchResponse
 	}
 
 	/**
+	 * Like: UID, RFC822.SIZE, MODSEQ, INTERNALDATE, FLAGS, BODYSTRUCTURE
 	 * @return mixed
 	 */
 	public function GetFetchValue(string $sFetchItemName)
@@ -124,11 +125,15 @@ class FetchResponse
 		return null;
 	}
 
+	/**
+	 * Like: BODY[HEADER.FIELDS (RETURN-PATH RECEIVED MIME-VERSION MESSAGE-ID CONTENT-TYPE FROM TO CC BCC SENDER REPLY-TO DELIVERED-TO IN-REPLY-TO REFERENCES DATE SUBJECT SENSITIVITY X-MSMAIL-PRIORITY IMPORTANCE X-PRIORITY X-DRAFT-INFO RETURN-RECEIPT-TO DISPOSITION-NOTIFICATION-TO X-CONFIRM-READING-TO AUTHENTICATION-RESULTS X-DKIM-AUTHENTICATION-RESULTS LIST-UNSUBSCRIBE X-SPAM-STATUS X-SPAMD-RESULT X-BOGOSITY X-VIRUS X-VIRUS-SCANNED X-VIRUS-STATUS)]
+	 * @return mixed
+	 */
 	public function GetHeaderFieldsValue(string $sRfc822SubMimeIndex = '') : string
 	{
 		$bNextIsValue = false;
 
-		$sRfc822SubMimeIndex = 0 < \strlen($sRfc822SubMimeIndex) ? ''.$sRfc822SubMimeIndex.'.' : '';
+		$sRfc822SubMimeIndex = \strlen($sRfc822SubMimeIndex) ? ''.$sRfc822SubMimeIndex.'.' : '';
 
 		if (isset($this->oImapResponse->ResponseList[3]) && \is_array($this->oImapResponse->ResponseList[3]))
 		{

snappymail/v/0.0.0/app/libraries/MailSo/Imap/ImapClient.php

@@ -334,6 +334,25 @@ class ImapClient extends \MailSo\Net\NetClient
 		}
 	}
 
+	/**
+	 * RFC 7889
+	 * APPENDLIMIT=<number> indicates that the IMAP server has the same upload limit for all mailboxes.
+	 * APPENDLIMIT without any value indicates that the IMAP server supports this extension,
+	 * and that the client will need to discover upload limits for each mailbox,
+	 * as they might differ from mailbox to mailbox.
+	 */
+	public function AppendLimit() : ?int
+	{
+		if ($this->aCapabilityItems) {
+			foreach ($this->aCapabilityItems as $string) {
+				if ('APPENDLIMIT=' === \substr($string, 0, 12)) {
+					return (int) \substr($string, 12);
+				}
+			}
+		}
+		return null;
+	}
+
 	/**
 	 * @throws \MailSo\Net\Exceptions\Exception
 	 * @throws \MailSo\Imap\Exceptions\Exception
@@ -416,21 +435,36 @@ class ImapClient extends \MailSo\Net\NetClient
 	 */
 	public function FolderStatus(string $sFolderName, array $aStatusItems) : ?array
 	{
+		if (!\count($aStatusItems)) {
+			return null;
+		}
 		$oFolderInfo = $this->oCurrentFolderInfo;
+		$bReselect = false;
+		$bWritable = false;
 		if ($oFolderInfo && $sFolderName === $oFolderInfo->FolderName) {
-			// Not supported by Outlook/Hotmail/Office365
+			/**
+			 * There's a long standing IMAP CLIENTBUG where STATUS command is executed
+			 * after SELECT/EXAMINE on same folder (it should not).
+			 * So we must unselect the folder to be able to get the APPENDLIMIT and UNSEEN.
+			 */
+/*
 			if ($this->IsSupported('ESEARCH')) {
 				$aResult = $oFolderInfo->getStatusItems();
 				// SELECT or EXAMINE command then UNSEEN is the message sequence number of the first unseen message
 				$aResult['UNSEEN'] = $this->simpleESearchOrESortHelper(false, 'UNSEEN', ['COUNT'])['COUNT'];
 				return $aResult;
 			}
-//			$this->FolderUnSelect();
+*/
+			$bWritable = $oFolderInfo->IsWritable;
+			$bReselect = true;
+			$this->FolderUnSelect();
 		}
-		return \count($aStatusItems)
-			? $this->SendRequestGetResponse('STATUS', array($this->EscapeString($sFolderName), $aStatusItems))
-				->getStatusFolderInformationResult()
-			: null;
+		$aResult = $this->SendRequestGetResponse('STATUS', array($this->EscapeString($sFolderName), $aStatusItems))
+			->getStatusFolderInformationResult();
+		if ($bReselect) {
+			$this->selectOrExamineFolder($sFolderName, $bWritable, false);
+		}
+		return $aResult;
 	}
 
 	/**
@@ -461,18 +495,26 @@ class ImapClient extends \MailSo\Net\NetClient
 		$aParameters[] = $this->EscapeString($sParentFolderName);
 		$aParameters[] = $this->EscapeString(\strlen(\trim($sListPattern)) ? $sListPattern : '*');
 
+		// RFC 5819
 		if ($bUseListStatus && !$bIsSubscribeList && $this->IsSupported('LIST-STATUS'))
 		{
-			// RFC 5819
 			$aL = array(
 				Enumerations\FolderStatus::MESSAGES,
 				Enumerations\FolderStatus::UNSEEN,
 				Enumerations\FolderStatus::UIDNEXT
 			);
-
+			// RFC 4551
 			if ($this->IsSupported('CONDSTORE')) {
 				$aL[] = Enumerations\FolderStatus::HIGHESTMODSEQ;
 			}
+			// RFC 7889
+			if ($this->IsSupported('APPENDLIMIT')) {
+				$aL[] = Enumerations\FolderStatus::APPENDLIMIT;
+			}
+			// RFC 8474
+			if ($this->IsSupported('OBJECTID')) {
+				$aTypes[] = Enumerations\FolderStatus::MAILBOXID;
+			}
 
 			$aReturnParams[] = 'STATUS';
 			$aReturnParams[] = $aL;
@@ -560,11 +602,17 @@ class ImapClient extends \MailSo\Net\NetClient
 			throw new \MailSo\Base\Exceptions\InvalidArgumentException;
 		}
 
+		$aParams = array($this->EscapeString($sFolderName));
+/*
+		if ($this->IsSupported('CONDSTORE')) {
+			$aParams[] = ['CONDSTORE'];
+		}
+*/
 		/**
 		 * IMAP4rev2 SELECT/EXAMINE are now required to return an untagged LIST response.
 		 */
 		$this->oCurrentFolderInfo = $this->SendRequestGetResponse($bIsWritable ? 'SELECT' : 'EXAMINE',
-			array($this->EscapeString($sFolderName)))
+			$aParams)
 			->getCurrentFolderInformation($sFolderName, $bIsWritable);
 
 		return $this;

snappymail/v/0.0.0/app/libraries/MailSo/Imap/Traits/Status.php

@@ -70,6 +70,13 @@ trait Status
 		 */
 		$HIGHESTMODSEQ,
 
+		/**
+		 * RFC7889
+		 * Message upload size limit.
+		 * @var int
+		 */
+		$APPENDLIMIT,
+
 		/**
 		 * RFC8474
 		 * A server-allocated unique identifier for the mailbox.
@@ -81,7 +88,7 @@ trait Status
 	public function getStatusItems() : array
 	{
 		return \array_filter(\get_object_vars($this), function($v, $k){
-			return isset($v) && \property_exists(__TRAIT__, $k);
+			return \property_exists(__TRAIT__, $k);
 		}, ARRAY_FILTER_USE_BOTH);
 	}
 

snappymail/v/0.0.0/app/libraries/MailSo/Mail/MailClient.php

@@ -519,8 +519,7 @@ class MailClient
 		return $this;
 	}
 
-	protected function initFolderValues(string $sFolderName, int &$iCount, int &$iUnseenCount,
-		int &$iUidNext, int &$iHighestModSeq) : void
+	protected function initFolderValues(string $sFolderName) : array
 	{
 		$aTypes = array(
 			FolderResponseStatus::MESSAGES,
@@ -528,24 +527,31 @@ class MailClient
 			FolderResponseStatus::UIDNEXT
 		);
 
-		if ($this->oImapClient->IsSupported('CONDSTORE'))
-		{
+		if ($this->oImapClient->IsSupported('CONDSTORE')) {
 			$aTypes[] = FolderResponseStatus::HIGHESTMODSEQ;
 		}
+		if ($this->oImapClient->IsSupported('APPENDLIMIT')) {
+			$aTypes[] = FolderResponseStatus::APPENDLIMIT;
+		}
+		if ($this->oImapClient->IsSupported('OBJECTID')) {
+			$aTypes[] = FolderResponseStatus::MAILBOXID;
+		}
 
 		$aFolderStatus = $this->oImapClient->FolderStatus($sFolderName, $aTypes);
 
-		$iCount = (int) $aFolderStatus[FolderResponseStatus::MESSAGES] ?? 0;
+		return [
+			$aFolderStatus[FolderResponseStatus::MESSAGES] ?: 0,
 
-		$iUnseenCount = (int) $aFolderStatus[FolderResponseStatus::UNSEEN] ?? 0;
+			$aFolderStatus[FolderResponseStatus::UNSEEN] ?: 0,
 
-		$iUidNext = (int) $aFolderStatus[FolderResponseStatus::UIDNEXT] ?? 0;
+			$aFolderStatus[FolderResponseStatus::UIDNEXT] ?: 0,
 
-		if (isset($aFolderStatus[FolderResponseStatus::HIGHESTMODSEQ])) {
-			$iHighestModSeq = (int) $aFolderStatus[FolderResponseStatus::HIGHESTMODSEQ];
-		} else {
-			$iHighestModSeq = 0;
-		}
+			$aFolderStatus[FolderResponseStatus::HIGHESTMODSEQ] ?: 0,
+
+			$aFolderStatus[FolderResponseStatus::APPENDLIMIT] ?: $this->oImapClient->AppendLimit(),
+
+			$aFolderStatus[FolderResponseStatus::MAILBOXID] ?: ''
+		];
 	}
 
 	public function GenerateImapClientHash() : string
@@ -652,12 +658,7 @@ class MailClient
 			}
 		}
 
-		$iCount = 0;
-		$iUnseenCount = 0;
-		$iUidNext = 0;
-		$iHighestModSeq = 0;
-
-		$this->initFolderValues($sFolderName, $iCount, $iUnseenCount, $iUidNext, $iHighestModSeq);
+		list($iCount, $iUnseenCount, $iUidNext, $iHighestModSeq, $iAppendLimit, $sMailboxId) = $this->initFolderValues($sFolderName);
 
 		return array(
 			'Folder' => $sFolderName,
@@ -667,6 +668,8 @@ class MailClient
 			'UidNext' => $iUidNext,
 			'MessageFlags' => $aFlags,
 			'HighestModSeq' => $iHighestModSeq,
+			'AppendLimit' => $iAppendLimit,
+			'MailboxId' => $sMailboxId,
 			'NewMessages' => 'INBOX' === $sFolderName && \MailSo\Config::$CheckNewMessages ?
 				$this->getFolderNextMessageInformation($sFolderName, $iPrevUidNext, $iUidNext) : array()
 		);
@@ -679,12 +682,7 @@ class MailClient
 	 */
 	public function FolderHash(string $sFolderName) : string
 	{
-		$iCount = 0;
-		$iUnseenCount = 0;
-		$iUidNext = 0;
-		$iHighestModSeq = 0;
-
-		$this->initFolderValues($sFolderName, $iCount, $iUnseenCount, $iUidNext, $iHighestModSeq);
+		list($iCount, $iUnseenCount, $iUidNext, $iHighestModSeq) = $this->initFolderValues($sFolderName);
 
 		return $this->GenerateFolderHash($sFolderName, $iCount, $iUidNext, $iHighestModSeq);
 	}
@@ -1555,11 +1553,6 @@ class MailClient
 		$mAllSortedUids = null;
 		$mAllThreads = null;
 
-		$iMessageRealCount = 0;
-		$iMessageUnseenCount = 0;
-		$iUidNext = 0;
-		$iHighestModSeq = 0;
-
 		$bUseSortIfSupported = $bUseSortIfSupported && $this->oImapClient->IsSupported('SORT');
 
 		$bUseThreadSortIfSupported = $bUseThreadSortIfSupported ?
@@ -1575,7 +1568,7 @@ class MailClient
 			$oCacher = null;
 		}
 
-		$this->initFolderValues($sFolderName, $iMessageRealCount, $iMessageUnseenCount, $iUidNext, $iHighestModSeq);
+		list($iMessageRealCount, $iMessageUnseenCount, $iUidNext, $iHighestModSeq) = $this->initFolderValues($sFolderName);
 
 		if ($bUseFilter)
 		{