protocols: jabber: omemo

	- fix possible crash on early session negotiation

1 files changed, 22 insertions, 23 deletions

diff --git a/protocols/JabberG/src/jabber_omemo.cpp b/protocols/JabberG/src/jabber_omemo.cpp
index 317d299ff5..4a9f876d66 100755
--- a/protocols/JabberG/src/jabber_omemo.cpp
+++ b/protocols/JabberG/src/jabber_omemo.cpp
@@ -1580,63 +1580,62 @@ void CJabberProto::OmemoPutMessageToIncommingQueue(HXML node, const wchar_t *jid
 

 void CJabberProto::OmemoHandleMessageQueue()

 {

-	for (std::list<omemo::outgoing_message>::iterator i = ((omemo::message_queue*)m_omemo.message_queue_internal)->outgoing_messages.begin(), 

-		end = ((omemo::message_queue*)m_omemo.message_queue_internal)->outgoing_messages.end();	i != end; ++i)

+	for (auto i : ((omemo::message_queue*)m_omemo.message_queue_internal)->outgoing_messages)

 	{

-		SendMsg(i->hContact, i->unused_unknown, i->pszSrc);

-		mir_free(i->pszSrc);

+		SendMsg(i.hContact, i.unused_unknown, i.pszSrc);

+		mir_free(i.pszSrc);

 	}

 	((omemo::message_queue*)m_omemo.message_queue_internal)->outgoing_messages.clear();

-	for (std::list<omemo::incomming_message>::iterator i = ((omemo::message_queue*)m_omemo.message_queue_internal)->incomming_messages.begin(),

-		end = ((omemo::message_queue*)m_omemo.message_queue_internal)->incomming_messages.end(); i != end; ++i)

+	std::list<omemo::incomming_message> tmp = ((omemo::message_queue*)m_omemo.message_queue_internal)->incomming_messages;

+	((omemo::message_queue*)m_omemo.message_queue_internal)->incomming_messages.clear();

+	for (auto i : tmp)

 	{

-		OmemoHandleMessage(i->node, i->jid, i->msgTime);

-		xmlFree(i->node);

-		mir_free(i->jid);

+		if (!OmemoHandleMessage(i.node, i.jid, i.msgTime))

+			OmemoPutMessageToIncommingQueue(i.node, i.jid, i.msgTime);

+		xmlFree(i.node);

+		mir_free(i.jid);

 	}

-	((omemo::message_queue*)m_omemo.message_queue_internal)->incomming_messages.clear();

 }

 

 DWORD JabberGetLastContactMessageTime(MCONTACT hContact);

 

-void CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)

+bool CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)

 {

 	MCONTACT hContact = HContactFromJID(jid);

 	if (!OmemoCheckSession(hContact))

 	{

-		OmemoPutMessageToIncommingQueue(node, jid, msgTime);

 		debugLogA("Jabber OMEMO: sessions not yet created, session creation launched");

-		return;

+		return false;

 	}

 	HXML header_node = XmlGetChild(node, L"header");

 	if (!header_node)

 	{

 		debugLogA("Jabber OMEMO: error: omemo message does not contain header");

-		return;

+		return true; //this should never happen

 	}

 	HXML payload_node = XmlGetChild(node, L"payload");

 	if (!payload_node)

 	{

 		debugLogA("Jabber OMEMO: omemo message does not contain payload, it's may be \"KeyTransportElement\" which is currently unused by our implementation");

-		return; //this is "KeyTransportElement" which is currently unused

+		return true; //this is "KeyTransportElement" which is currently unused

 	}

 	const wchar_t *payload_base64w = XmlGetText(payload_node);

 	if (!payload_base64w)

 	{

 		debugLogA("Jabber OMEMO: error: failed to get payload data");

-		return;

+		return true; //this should never happen

 	}

 	const wchar_t *iv_base64 = XmlGetText(XmlGetChild(header_node, L"iv"));

 	if (!iv_base64)

 	{

 		Netlib_Log(nullptr, "Jabber OMEMO: error: failed to get iv data");

-		return;

+		return true;

 	}

 	const wchar_t *sender_dev_id = XmlGetAttrValue(header_node, L"sid");

 	if (!sender_dev_id)

 	{

 		debugLogA("Jabber OMEMO: error: failed to get sender device id");

-		return;

+		return true;

 	}

 	char *sender_device_id_a = mir_u2a(sender_dev_id);

 	DWORD sender_dev_id_int = strtoul(sender_device_id_a, nullptr, 10);

@@ -1646,9 +1645,8 @@ void CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)
 		|| !(*(std::map<MCONTACT, std::map<unsigned int, omemo::omemo_session_jabber_internal_ptrs> >*)m_omemo.sessions_internal)[hContact][sender_dev_id_int].store_context)

 	{

 		OmemoCheckSession(hContact); //this should not normally happened

-		OmemoPutMessageToIncommingQueue(node, jid, msgTime);

 		debugLogA("Jabber OMEMO: bug: omemo session does not exist or broken");

-		return;

+		return false;

 	}

 	HXML key_node;

 	DWORD own_id = m_omemo.GetOwnDeviceId();

@@ -1668,7 +1666,7 @@ void CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)
 	if (!encrypted_key_base64)

 	{

 		debugLogA("Jabber OMEMO: message does not have decryption key for our device");

-		return; //node does not contain key for our device

+		return true; //node does not contain key for our device

 	}

 	size_t encrypted_key_len;

 	unsigned char *encrypted_key;

@@ -1794,7 +1792,7 @@ void CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)
 	if(!decrypted)

 	{

 		debugLogA("Jabber OMEMO: error: failed to decrypt incomming message");

-		return; //TODO: cleanup

+		return true; //TODO: cleanup

 	}

 	char *out = nullptr;

 	{

@@ -1836,7 +1834,7 @@ void CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)
 		if (dec_success <= 0) //TODO: check this... omemo xep have no info about tag

 		{

 			debugLogA("Jabber OMEMO: error: aes_128_gcm verification failed");

-			return;

+			return true;

 		}

 

 	}

@@ -1855,6 +1853,7 @@ void CJabberProto::OmemoHandleMessage(HXML node, wchar_t *jid, time_t msgTime)
 	recv.lParam = (LPARAM)((pFromResource != nullptr && m_bEnableRemoteControl) ? pFromResource->m_tszResourceName : 0);

 	ProtoChainRecvMsg(hContact, &recv);

 	mir_free(out);

+	return true;

 }

 

 void CJabberProto::OmemoHandleDeviceList(HXML node)