author | mjm <mjm> | 2002-12-04 20:41:42 (UTC) |
---|---|---|
committer | mjm <mjm> | 2002-12-04 20:41:42 (UTC) |
commit | e5d01d8c3cf1d606e53684b6eccaf3ceaf6dea0b (patch) (side-by-side diff) | |
tree | 3fd36924f0654d085cb455a1837cedc6612b8303 | |
parent | 1f70a97d8f4ccedbfdbde72e70649f01d92f190a (diff) | |
download | opie-e5d01d8c3cf1d606e53684b6eccaf3ceaf6dea0b.zip opie-e5d01d8c3cf1d606e53684b6eccaf3ceaf6dea0b.tar.gz opie-e5d01d8c3cf1d606e53684b6eccaf3ceaf6dea0b.tar.bz2 |
more debug
-rw-r--r-- | noncore/net/wellenreiter/libwellenreiter/source/sniff.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc b/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc index 66299d1..81eccab 100644 --- a/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc +++ b/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc @@ -23,197 +23,203 @@ void process_packets(const struct pcap_pkthdr *pkthdr, const unsigned char *pack struct packetinfo *pinfoptr; /* wl_network_t will finally be set and send to the ui */ wl_network_t wl_net; pinfoptr=&pinfo; pinfoptr->isvalid = 0; pinfoptr->pktlen = pkthdr->len; if (caplen < IEEE802_11_FC_LEN) { /* This is a garbage packet, because is does not long enough to hold a 802.11b header */ pinfoptr->isvalid = 0; return; } /* Gets the framecontrol bits (2bytes long) */ fc = EXTRACT_LE_16BITS(packet); HEADER_LENGTH = GetHeaderLength(fc); if (caplen < HEADER_LENGTH) { /* This is a garbage packet, because it is not long enough to hold a correct header of its type */ pinfoptr->isvalid = 0; return; } /* Decode 802.11b header out of the packet */ if (decode_80211b_hdr(packet,pinfoptr) == 0) { /* Justification of the ofset to further process the packet */ length -= HEADER_LENGTH; caplen -= HEADER_LENGTH; packet += HEADER_LENGTH; } else /* Something is wrong,could not be a correct packet */ return; switch (FC_TYPE(fc)) { /* Is it a managemnet frame? */ case T_MGMT: switch (FC_SUBTYPE(fc)) { case ST_BEACON: if (handle_beacon(fc, packet,pinfoptr) ==0) { if (!strcmp(pinfoptr->desthwaddr,"ff:ff:ff:ff:ff:ff") == 0) { /* Every beacon must have the broadcast as destination so it must be a shitti packet */ pinfoptr->isvalid = 0; return; } if (pinfoptr->cap_ESS == pinfoptr->cap_IBSS) { /* Only one of both are possible, so must be a noise packet, if this comes up */ pinfoptr->isvalid = 0; return; } if (pinfoptr->channel < 1 || pinfoptr->channel > 14) { /* Only channels between 1 and 14 are possible others must be noise packets */ pinfoptr->isvalid = 0; return; } /* Here should be the infos to the gui issued */ if (pinfoptr->cap_ESS == 1 &&pinfoptr->cap_IBSS ==0) { wl_loginfo("Found an access point"); wl_net.net_type=1; } else if(pinfoptr->cap_ESS == 0 && pinfoptr->cap_IBSS == 1) { wl_loginfo("Found an ad-hoc network"); wl_net.net_type=2; } if (strcmp (pinfoptr->ssid,NONBROADCASTING) ==0) { wl_loginfo("Net is a non-broadcasting network"); } else { wl_loginfo("SSID is: %s", pinfoptr->ssid); // wl_net.bssid=pinfoptr->ssid; } + wl_loginfo("SSID length is: %d", pinfoptr->ssid_len); wl_net.ssid_len=pinfoptr->ssid_len; + + wl_loginfo("Channel is: %d", pinfoptr->channel); wl_net.channel=pinfoptr->channel; wl_net.wep=pinfoptr->cap_WEP; - memcpy(wl_net.mac, pinfoptr->sndhwaddr, sizeof(wl_net.mac));; - memcpy(wl_net.bssid, pinfoptr->ssid, sizeof(wl_net.bssid)); + + wl_loginfo("Mac is: %s", pinfoptr->sndhwaddr); + memcpy(wl_net.mac, pinfoptr->sndhwaddr, sizeof(wl_net.mac)-1);; + wl_loginfo("SSID is: %s", pinfoptr->ssid); + memcpy(wl_net.bssid, pinfoptr->ssid, sizeof(wl_net.bssid)-1); // printf ("\n\tDest : %s\n",pinfoptr->desthwaddr); send_network_found((char *)guihost, guiport, &wl_net); wl_loginfo("Sent network to GUI '%s:%d'", guihost, guiport); } break; default: wl_logerr("Unknown IEEE802.11 frame subtype (%d)", FC_SUBTYPE(fc)); break; } /* End of switch over different mgt frame types */ break; case T_CTRL: wl_loginfo("Received control frame, not implemented yet"); break; 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")]; cp = buf; if ((j = *ep >> 4) != 0) *cp++ = hex[j]; *cp++ = hex[*ep++ & 0xf]; for (i = 5; (int)--i >= 0;) { *cp++ = ':'; if ((j = *ep >> 4) != 0) *cp++ = hex[j]; *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: memcpy(&(pbody.ssid),p+offset,2); offset += 2; if (pbody.ssid.length > 0) { memcpy(&(pbody.ssid.ssid),p+offset,pbody.ssid.length); offset += pbody.ssid.length; pbody.ssid.ssid[pbody.ssid.length]='\0'; if (strcmp((char *)pbody.ssid.ssid,"")==0) memcpy(ppinfo->ssid, NONBROADCASTING, sizeof(ppinfo->ssid)); |