void mesh_cleanup(void){
time_t now=getSeconds();
for(int i=1;i<MESHBUFSIZE;i++){
if(meshbuffer[i].flags&MF_USED){
if (MO_GEN(meshbuffer[i].pkt)<meshgen)
meshbuffer[i].flags=MF_FREE;
if (MO_TYPE(meshbuffer[i].pkt)>='a' &&
MO_TYPE(meshbuffer[i].pkt)<='z'){
;
}else{
if (MO_TIME(meshbuffer[i].pkt)<now)
meshbuffer[i].flags=MF_FREE;
if (MO_TIME(meshbuffer[i].pkt)-now>SECS_DAY)
meshbuffer[i].flags=MF_FREE;
};
};
};
};
uint8_t mesh_recvqloop_work(void){
__attribute__ ((aligned (4))) uint8_t buf[32];
int len;
len=nrf_rcv_pkt_poll_dec(sizeof(buf),buf,meshkey);
// Receive
if(len<=0){
return 0;
};
if(MO_GEN(buf)>meshgen){
if(meshgen)
meshgen++;
else
meshgen=MO_GEN(buf);
_timet=0;
meshincctr=0;
meshnice=0;
};
if(MO_TYPE(buf)=='T'){
time_t toff=MO_TIME(buf)-((getTimer()+(600/SYSTICKSPEED))/(1000/SYSTICKSPEED));
if (toff>_timet){ // Do not live in the past.
_timet = toff;
meshincctr++;
};
if(MO_BODY(buf)[4] > meshnice)
meshnice=MO_BODY(buf)[4];
return 1;
};
// Safety: Truncate ascii packets by 0-ing the CRC
buf[MESHPKTSIZE-2]=0;
// Store packet in a same/free slot
MPKT* mpkt=meshGetMessage(MO_TYPE(buf));
// Skip locked packet
if(mpkt->flags&MF_LOCK)
return 2;
// only accept newer/better packets
if(mpkt->flags==MF_USED)
if(MO_TIME(buf)<=MO_TIME(mpkt->pkt))
return 2;
if((MO_TYPE(buf)>='A' && MO_TYPE(buf)<='C') ||
(MO_TYPE(buf)>='A' && MO_TYPE(buf)<='C'))
meshmsg=1;
memcpy(mpkt->pkt,buf,MESHPKTSIZE);
mpkt->flags=MF_USED;
return 1;
};
static int mesh_sanity(uint8_t * pkt){
if(MO_TYPE(pkt)>='A' && MO_TYPE(pkt)<='Z'){
if(MO_TIME(pkt)>1313803870)
return 1;
if(MO_TIME(pkt)<1312075898)
return 1;
}else if(MO_TYPE(pkt)>='a' && MO_TYPE(pkt)<='z'){
if(MO_TIME(pkt)>16777216)
return 1;
if(MO_TIME(pkt)<0)
return 1;
};
if(MO_TYPE(pkt)>0x7f || MO_TYPE(pkt)<0x20)
return 1;
return 0;
};
MPKT * meshGetMessage(uint8_t type){
int free=-1;
for(int i=0;i<MESHBUFSIZE;i++){
if ( ((meshbuffer[i].flags&MF_USED)==0) && free<0 )
free=i;
if ( (meshbuffer[i].flags&MF_USED) &&
(MO_TYPE(meshbuffer[i].pkt) == type)){
free=i;
break;
};
};
if(free==-1){ // Buffer full. Ah well. Kill a random packet
free=1; // XXX: GetRandom()?
meshbuffer[free].flags=MF_FREE;
};
if(meshbuffer[free].flags==MF_FREE){
memset(&meshbuffer[free],0,sizeof(MPKT));
MO_TYPE_set(meshbuffer[free].pkt,type);
MO_GEN_set(meshbuffer[free].pkt,meshgen);
meshbuffer[free].flags=MF_USED;
};
return &meshbuffer[free];
};
