| -rw-r--r-- | noncore/net/wellenreiter/libwellenreiter/source/sniff.cc | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc b/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc index 81eccab..3c227ab 100644 --- a/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc +++ b/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc @@ -146,73 +146,88 @@ void process_packets(const struct pcap_pkthdr *pkthdr, const unsigned char *pack case T_DATA: wl_loginfo("Received date frame, not implemented yet"); break; default: wl_logerr("Unknown IEEE802.11 frame type (%d)", FC_TYPE(fc)); break; } } /* This decodes the 802.11b frame header out of the 802.11b packet all the infos is placed into the packetinfo structure */ int decode_80211b_hdr(const u_char *p,struct packetinfo *ppinfo) { const struct mgmt_header_t *mgthdr = (const struct mgmt_header_t *) p; ppinfo->fcsubtype = FC_SUBTYPE(mgthdr->fc); /* Get the sender, bssid and dest mac address */ etheraddr_string(mgthdr->bssid,ppinfo->bssid); etheraddr_string(mgthdr->da,ppinfo->desthwaddr); etheraddr_string(mgthdr->sa,ppinfo->sndhwaddr); ppinfo->fc_wep = FC_WEP(mgthdr->fc); return 0; } void etheraddr_string(register const u_char *ep, char *text) { static char hex[] = "0123456789abcdef"; register unsigned int i, j; register char *cp; - char buf[sizeof("00:00:00:00:00:00")]; + char buf[sizeof("00:00:00:00:00:00\0")]; cp = buf; if ((j = *ep >> 4) != 0) - *cp++ = hex[j]; + { + *cp++ = hex[j]; + } + else + { + *cp++ = '0'; + } *cp++ = hex[*ep++ & 0xf]; - for (i = 5; (int)--i >= 0;) { + + for (i = 5; (int)--i >= 0;) + { *cp++ = ':'; if ((j = *ep >> 4) != 0) - *cp++ = hex[j]; + { + *cp++ = hex[j]; + } + else + { + *cp++ = '0'; + } + *cp++ = hex[*ep++ & 0xf]; } *cp = '\0'; strcpy(text,buf); } /* beacon handler */ int handle_beacon(u_int16_t fc, const u_char *p,struct packetinfo *ppinfo) { struct mgmt_body_t pbody; int offset = 0; /* Get the static informations out of the packet */ memset(&pbody, 0, sizeof(pbody)); memcpy(&pbody.timestamp, p, 8); offset += 8; pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset); offset += 2; pbody.capability_info = EXTRACT_LE_16BITS(p+offset); offset += 2; /* Gets the different flags out of the capabilities */ ppinfo->cap_ESS = CAPABILITY_ESS(pbody.capability_info); ppinfo->cap_IBSS = CAPABILITY_IBSS(pbody.capability_info); ppinfo->cap_WEP = CAPABILITY_PRIVACY(pbody.capability_info); /* Gets the tagged elements out of the packets */ while (offset + 1 < ppinfo->pktlen) { switch (*(p + offset)) { case E_SSID: |