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58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
#ifndef LAIKA_PEER_H
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#define LAIKA_PEER_H
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#include "laika.h"
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#include "lsocket.h"
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#include "lpacket.h"
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#include "lpolllist.h"
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#include "lsodium.h"
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typedef enum {
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PEER_UNVERIFIED,
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PEER_BOT,
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PEER_CNC, /* cnc 2 cnc communication */
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PEER_AUTH /* authorized peers can send commands to cnc */
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} PEERTYPE;
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struct sLaika_peer;
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typedef void (*PeerPktHandler)(struct sLaika_peer *peer, LAIKAPKT_SIZE sz, void *uData);
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struct sLaika_peerPacketInfo {
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PeerPktHandler handler;
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LAIKAPKT_SIZE size;
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bool variadic;
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};
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#define LAIKA_CREATE_PACKET_INFO(ID, HANDLER, SIZE, ISVARIADIC) [ID] = {.handler = HANDLER, .size = SIZE, .variadic = ISVARIADIC}
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struct sLaika_peer {
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struct sLaika_socket sock; /* DO NOT MOVE THIS. this member HAS TO BE FIRST so that typecasting sLaika_peer* to sLaika_sock* works as intended */
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uint8_t peerPub[crypto_kx_PUBLICKEYBYTES]; /* connected peer's public key */
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uint8_t inKey[crypto_kx_SESSIONKEYBYTES], outKey[crypto_kx_SESSIONKEYBYTES];
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char hostname[LAIKA_HOSTNAME_LEN], ipv4[LAIKA_IPV4_LEN];
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struct sLaika_pollList *pList; /* pollList we're activeList in */
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struct sLaika_peerPacketInfo *packetTbl; /* const table to pull pkt data from */
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void *uData; /* data to be passed to pktHandler */
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LAIKAPKT_SIZE pktSize; /* current pkt size */
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LAIKAPKT_ID pktID; /* current pkt ID */
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PEERTYPE type;
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int outStart; /* index of pktID for out packet */
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int inStart; /* index of pktID for in packet */
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bool setPollOut; /* is EPOLLOUT/POLLOUT is set on sock's pollfd ? */
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bool useSecure; /* if true, peer will transmit/receive encrypted data using inKey & outKey */
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};
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struct sLaika_peer *laikaS_newPeer(struct sLaika_peerPacketInfo *packetTbl, struct sLaika_pollList *pList, void *uData);
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void laikaS_freePeer(struct sLaika_peer *peer);
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void laikaS_setSecure(struct sLaika_peer *peer, bool flag);
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void laikaS_emptyOutPacket(struct sLaika_peer *peer, LAIKAPKT_ID id); /* for sending packets with no body */
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void laikaS_startOutPacket(struct sLaika_peer *peer, LAIKAPKT_ID id);
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int laikaS_endOutPacket(struct sLaika_peer *peer);
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void laikaS_startVarPacket(struct sLaika_peer *peer, LAIKAPKT_ID id);
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int laikaS_endVarPacket(struct sLaika_peer *peer);
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bool laikaS_handlePeerIn(struct sLaika_peer *peer);
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bool laikaS_handlePeerOut(struct sLaika_peer *peer);
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#endif |