open62541/src/ua_channel.h

#ifndef UA_CHANNEL_H_
#define UA_CHANNEL_H_

#include <stdio.h>
#include <memory.h> // memcpy

#include "ua_transport_connection.h"

typedef enum ChannelState {
	UA_SL_CHANNEL_CLOSING,
	UA_SL_CHANNEL_CLOSED,
	UA_SL_CHANNEL_OPENING,
	UA_SL_CHANNEL_OPEN
} SL_channelState;

//hide object behind typedef
struct SL_Channel;
typedef struct SL_Channel SL_Channel;

typedef UA_Int32 (*SL_ChannelSecurityTokenProvider)(SL_Channel*, UA_Int32,
		         SecurityTokenRequestType, UA_ChannelSecurityToken*);
typedef UA_Int32 (*SL_ChannelIdProvider)(UA_UInt32*);
UA_Int32 SL_Channel_new(SL_Channel **channel);

UA_Int32 SL_Channel_init(SL_Channel *channel, UA_TL_Connection *connection,
		SL_ChannelIdProvider channelIdProvider,
		SL_ChannelSecurityTokenProvider tokenProvider);

UA_Int32 SL_Channel_bind(SL_Channel *channel, UA_TL_Connection *connection);
UA_Int32 SL_Channel_setRemoteSecuritySettings(SL_Channel *channel,
		UA_AsymmetricAlgorithmSecurityHeader *asymSecHeader,
		UA_SequenceHeader *sequenceHeader);

UA_Int32 SL_Channel_initLocalSecuritySettings(SL_Channel *channel);
UA_Int32 SL_Channel_delete(SL_Channel *channel);
UA_Int32 SL_Channel_deleteMembers(SL_Channel *channel);
UA_Int32 SL_Channel_renewToken(SL_Channel *channel, UA_UInt32 tokenId,
		UA_DateTime revisedLifetime, UA_DateTime createdAt);

UA_Int32 SL_Channel_processOpenRequest(SL_Channel *channel, const UA_OpenSecureChannelRequest* request,
									   UA_OpenSecureChannelResponse* response);
UA_Int32 SL_Channel_processCloseRequest(SL_Channel *channel, const UA_CloseSecureChannelRequest* request);
UA_Int32 SL_Channel_registerTokenProvider(SL_Channel *channel, SL_ChannelSecurityTokenProvider provider);
UA_Int32 SL_Channel_registerChannelIdProvider(SL_ChannelIdProvider provider);
UA_Int32 SL_Channel_checkRequestId(SL_Channel *channel, UA_UInt32 requestId);
UA_Int32 SL_Channel_checkSequenceNumber(SL_Channel *channel, UA_UInt32 sequenceNumber);
UA_Boolean SL_Channel_compare(SL_Channel *channel1, SL_Channel *channel2);

//getters
UA_Int32 SL_Channel_getChannelId(SL_Channel *channel, UA_UInt32 *channelId);
UA_Int32 SL_Channel_getTokenId(SL_Channel *channel, UA_UInt32 *tokenlId);
UA_Int32 SL_Channel_getSequenceNumber(SL_Channel *channel, UA_UInt32 *sequenceNumber);
UA_Int32 SL_Channel_getRequestId(SL_Channel *channel, UA_UInt32 *requestId);
UA_Int32 SL_Channel_getConnectionId(SL_Channel *channel, UA_UInt32 *connectionId);
UA_Int32 SL_Channel_getConnection(SL_Channel *channel, UA_TL_Connection **connection);
UA_Int32 SL_Channel_getState(SL_Channel *channel, SL_channelState *channelState);
UA_Int32 SL_Channel_getLocalAsymAlgSettings(SL_Channel *channel,
		UA_AsymmetricAlgorithmSecurityHeader **asymAlgSettings);
UA_Int32 SL_Channel_getRemainingLifetime(SL_Channel *channel, UA_Int32 *lifetime);
UA_Int32 SL_Channel_getRevisedLifetime(SL_Channel *channel, UA_UInt32 *revisedLifetime);

//setters
UA_Int32 SL_Channel_setId(SL_Channel *channel, UA_UInt32 id);

#endif /* UA_CHANNEL_H_ */