int PeiStackFlow(pei *ppei, const pstack_f *stack)
{
if (ppei->stack != NULL) {
ProtDelFrame(ppei->stack);
}
ppei->stack = ProtCopyFrame(stack, TRUE);
return 0;
}
int FlowDelete(int flow_id)
{
int ret;
packet *pkt, *tmp;
int i, cnt, base;
int nxt_flw, grp_id;
freel *ftmp;
FlowTblLock();
/* check if flow is closed */
if (flow_tbl[flow_id].close == FALSE) {
FlowTblUnlock();
LogPrintf(LV_ERROR, "It is tried to delete an open flow");
return -1;
}
/* close all flows son of this */
grp_id = flow_tbl[flow_id].grp_id;
if (grp_id == -1) {
if (flow_tbl[flow_id].son_num) {
cnt = 0;
base = flow_num;
for (i=0; i<tbl_dim && cnt<base; i++) {
if (flow_tbl[i].stack != NULL) {
cnt++;
if (flow_tbl[i].pfid == flow_id) {
FlowClose(i);
flow_tbl[i].pfid = -1; /* parent terminated */
}
}
}
}
}
else if (GrpFlowNum(grp_id) == 1) {
/* last flow of this group (the thread flow is terminated!) */
cnt = 0;
base = flow_num;
for (i=0; i<tbl_dim && cnt<base; i++) {
if (flow_tbl[i].stack != NULL) {
cnt++;
if (flow_tbl[i].pgrp_id == grp_id) {
FlowClose(i);
flow_tbl[i].pfid = -1; /* parent terminated */
flow_tbl[i].pgrp_id = -1; /* parent terminated */
}
}
}
}
/* parent son counter */
if (flow_tbl[flow_id].pfid != -1) {
flow_tbl[flow_tbl[flow_id].pfid].son_num--;
}
/* count the packet from protocol node to protocol dissector */
#ifdef XPL_PEDANTIC_STATISTICS
if (flow_tbl[flow_id].proto_id != -1 && flow_tbl[flow_id].proto_id != flow_tbl[flow_id].pfid) {
ProtPktFromNode(flow_tbl[flow_id].proto_id, flow_tbl[flow_id].pkt_tot);
}
#endif
/* remove all (grp) rules created by this flow */
GrpRuleRmAll(flow_id);
/* check if flow have packet in the queue */
pthread_mutex_lock(flow_tbl[flow_id].mux);
if (flow_tbl[flow_id].pkt_num != 0) {
if (flow_tbl[flow_id].elab == TRUE) {
LogPrintf(LV_WARNING, "Deleted a flow with %d packet in queue", flow_tbl[flow_id].pkt_num);
ProtStackFrmDisp(FlowStack(flow_id), TRUE);
}
pkt = flow_tbl[flow_id].fpkt;
/* free all packet */
#ifndef XPL_CHECK_CODE
PktFree(pkt); /* recursive */
pkt = NULL;
#else
while (pkt != NULL) {
tmp = pkt;
pkt = pkt->next;
tmp->next = NULL;
PktFree(tmp);
flow_tbl[flow_id].pkt_num--;
}
if (flow_tbl[flow_id].pkt_num != 0) {
LogPrintf(LV_OOPS, "bug in pkt flow counter");
}
#endif
}
pthread_mutex_unlock(flow_tbl[flow_id].mux);
/* thread */
if (flow_tbl[flow_id].elab == TRUE) {
if (flow_tbl[flow_id].grp_id == -1) {
ProtRunFlowDec(flow_tbl[flow_id].proto_id);
FthreadChFlow(flow_tbl[flow_id].fthd_id, -1);
}
else {
if (FthreadFlow(flow_tbl[flow_id].fthd_id) == flow_id) {
GrpLock(flow_tbl[flow_id].grp_id);
do {
nxt_flw = GrpNext(flow_tbl[flow_id].grp_id);
} while (nxt_flw != -1 && nxt_flw == flow_id);
GrpUnlock(flow_tbl[flow_id].grp_id);
#ifndef PROT_GRP_COUNT
if (nxt_flw == -1) {
ProtRunFlowDec(flow_tbl[flow_id].proto_id);
}
#else
ProtRunFlowDec(flow_tbl[flow_id].proto_id);
#endif
FthreadChFlow(flow_tbl[flow_id].fthd_id, nxt_flw);
}
else {
#ifdef PROT_GRP_COUNT
ProtRunFlowDec(flow_tbl[flow_id].proto_id);
#endif
}
}
}
/* remove from grp */
if (flow_tbl[flow_id].grp_id != -1) {
ret = GrpRm(flow_tbl[flow_id].grp_id, flow_id);
#ifdef XPL_CHECK_CODE
if (ret == -1) {
LogPrintf(LV_OOPS, "bug in Grp Add/Rm use");
}
#endif
}
/* stack */
ProtDelFrame(flow_tbl[flow_id].stack);
/* reset flow cel */
FlowElemInit(flow_tbl+flow_id, TRUE);
ftmp = xmalloc(sizeof(freel));
ftmp->id = flow_id;
ftmp->nxt = ffree;
ffree = ftmp;
ffree_num++;
flow_num--;
FlowTblUnlock();
return 0;
}
