int wtpconf_primary_if()
{
if (!conf_primary_if ) {
conf_primary_if = sock_get_primary_if(AF_INET6);
if (!conf_primary_if)
conf_primary_if = sock_get_primary_if(AF_INET);
}
if (!conf_primary_if){
cw_log(LOG_ERR,"Fatal: Unable to detect primary interface");
return 0;
}
if (!sock_getifhwaddr(conf_primary_if,conf_macaddress,&conf_macaddress_len)){
cw_log(LOG_ERR,"Fatal: Unable to detect link layer address for %s:",conf_primary_if,
strerror(errno));
return 0;
};
cw_dbg(DBG_INFO, "Primary interface: %s, mac address: %s.",
conf_primary_if,
sock_hwaddr2str(conf_macaddress,conf_macaddress_len)
);
return 1;
}
int wtpconf_primary_if()
{
#ifdef WITH_IPV6
conf_primary_if = sock_get_primary_if(AF_INET6);
if (!conf_primary_if)
conf_primary_if = sock_get_primary_if(AF_INET);
#else
conf_primary_if = get_primary_if(AF_INET);
#endif
if (!conf_primary_if){
cw_log(LOG_ERR,"Fatal: Unable to detect primary interface");
return 0;
}
if (!sock_getifhwaddr(conf_primary_if,conf_macaddress,&conf_macaddress_len)){
cw_log(LOG_ERR,"Fatal: Unable to detect link layer address for %s.",conf_primary_if);
return 0;
};
cw_dbg(DBG_CW_INFO, "Primary interface: %s, mac address: %s.",
conf_primary_if,
sock_hwaddr2str(conf_macaddress,conf_macaddress_len)
);
return 1;
}
int hdr_print(char *str, uint8_t *packet, int len)
{
char *s = str;
if (len<1){
s+=sprintf(s,"\tNo info available.");
return s-str;
}
int preamble = cw_get_hdr_preamble(packet); //CWTH_GET_PREAMBLE(packet);
if (preamble==01){
s+=sprintf(s,"\tEncrypted data.");
return s-str;
}
if (preamble!=00){
s+=sprintf(s,"\tWrong CAPWAP version or encryption type.");
return s-str;
}
if (len < 4){
s+=sprintf(s,"\tNo more data. Packet too short.");
return s-str;
}
int hlen = cw_get_hdr_hlen(packet); //CWTH_GET_HLEN(packet);
int rid = cw_get_hdr_rid(packet);
int wbid = cw_get_hdr_wbid(packet);
s+=sprintf(s,"\tHLEN: %d, RID: %02X, WBID %02X",hlen,rid,wbid);
s+=sprintf(s," Flags: (T=%d,F=%d,L=%d,W=%d,M=%d,K=%d)\n",
cw_get_hdr_flag_t(packet),
cw_get_hdr_flag_f(packet),
cw_get_hdr_flag_l(packet),
cw_get_hdr_flag_w(packet),
cw_get_hdr_flag_m(packet),
cw_get_hdr_flag_k(packet)
);
if (cw_get_hdr_flag_m(packet)){
uint8_t * rmac = cw_get_hdr_rmac(packet);
s+=sprintf(s,"\tRadio MAC: %s\n",sock_hwaddr2str(bstr_data(rmac),
bstr_len(rmac)));
}
if (len < 8){
s+=sprintf(s,"\tNo more data. Packet too short.");
return s-str;
}
int frag_id = cw_get_hdr_fragid(packet);
int frag_offs = cw_get_hdr_fragoffset(packet);
s+=sprintf(s,"\tFrag Id: %d, Frag Offs:: %d\n",frag_id,frag_offs);
int bhlen = 4*hlen;
if (cw_get_hdr_flag_f(packet) && frag_offs!=0){
s+=sprintf(s,"\tFragment data ...");
return s-str;
}
if (len<bhlen+4){
s+=sprintf(s,"\tNo more data. Packet too short.");
return s-str;
}
int msgtype = ntohl(*((uint32_t*)(packet+bhlen)));
s+=sprintf(s,"\tMsgType: %d",msgtype);
if (len<bhlen+8){
s+=sprintf(s,"\n\tNo more data. Packet too short.");
return s-str;
}
int seqnum = (ntohl(*((uint32_t*)(packet+bhlen+4))))>>24;
int msgelemlen = 0xFF & ((ntohl(*((uint32_t*)(packet+bhlen+4))))>>8);
s+=sprintf(s,", SeqNum: %d, MsgelemLen:%d",seqnum,msgelemlen);
return s-str;
}
