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/*
This file is part of Kismet
Kismet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Kismet is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Kismet; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
DECT source v2
(c) 2008 by Mike Kershaw <dragorn (at) kismetwireless (dot) net,
Jacob Appelbaum <jacob (at) appelbaum (dot) net,
Christian Fromme <kaner (at) strace (dot) org
*/
#include "config.h"
#include <packetsource.h>
#include "packet_dect.h"
#include "packetsource_dect.h"
PacketSource_Dect::PacketSource_Dect(GlobalRegistry *in_globalreg):
KisPacketSource(in_globalreg) {
serial_fd = -1;
sync = false;
scan_mode = MODE_ASYNC_FP_SCAN;
}
PacketSource_Dect::PacketSource_Dect(GlobalRegistry *in_globalreg, string in_interface,
vector<opt_pair> *in_opts) :
KisPacketSource(in_globalreg, in_interface, in_opts) {
serial_fd = -1;
sync = false;
scan_mode = -1;
ParseOptions(in_opts);
}
PacketSource_Dect::~PacketSource_Dect() {
if (serial_fd >= 0) {
close(serial_fd);
serial_fd = -1;
}
}
int PacketSource_Dect::AutotypeProbe(string in_device) {
if (StrLower(in_device) == "dect") {
type = "dect";
return 1;
}
if (StrLower(in_device) == "dectus") {
type = "dectus";
return 1;
}
return 0;
}
int PacketSource_Dect::ParseOptions(vector<opt_pair> *in_opts) {
if ((serialdevice = FetchOpt("device", in_opts)) == "") {
_MSG("DECT packet source defaulting to default serial /dev/coa",
MSGFLAG_INFO);
serialdevice = "/dev/coa";
} else {
_MSG("DECT packet source using serial device " + serialdevice,
MSGFLAG_INFO);
}
return 1;
}
int PacketSource_Dect::FetchDescriptor() {
return serial_fd;
}
int PacketSource_Dect::SetChannel(unsigned int in_ch) {
if (ioctl(serial_fd, COA_IOCTL_CHAN, &in_ch)) {
_MSG("DECT packet source '" + name + "': Failed to set channel: " +
string(strerror(errno)), MSGFLAG_ERROR);
return 0;
}
last_channel = in_ch;
// printf("debug - dect set channel %u\n", in_ch);
return 1;
}
int PacketSource_Dect::StartScanPp(mac_addr in_rfpi) {
if (serial_fd == -1)
return -1;
/* always accept mode set since we might change RFPI */
/* remove the sync early since we've disrupted the state of the world */
if (sync) {
sync = false;
}
/* Set sync sniff mode */
uint16_t val;
val = COA_MODE_SNIFF | COA_SUBMODE_SNIFF_SYNC;
if (ioctl(serial_fd, COA_IOCTL_MODE, &val)) {
_MSG("DECT packet source '" + name + "': Failed to set sniffer mode PP: " +
string(strerror(errno)), MSGFLAG_ERROR);
return -1;
}
/* set RFPI to sync with */
uint8_t mrfpi[5];
for (unsigned int x = 0; x < 5; x++)
mrfpi[x] = in_rfpi[x];
if (ioctl(serial_fd, COA_IOCTL_SETRFPI, mrfpi)) {
_MSG("DECT packet source '" + name + "': Failed to set PP RFPI: " +
string(strerror(errno)), MSGFLAG_ERROR);
return -1;
}
scan_mode = MODE_ASYNC_PP_SCAN;
// Caller should turn off PST channel hopping and set channel
// globalreg->sourcetracker->SetSourceHopping(FetchUUID(), 0, 0);
return 1;
}
int PacketSource_Dect::StartScanCalls(mac_addr in_rfpi, int in_channel) {
if (serial_fd == -1)
return -1;
if (sync)
sync = false;
/* Set sync sniff mode */
uint16_t val;
val = COA_MODE_SNIFF | COA_SUBMODE_SNIFF_SYNC;
if (ioctl(serial_fd, COA_IOCTL_MODE, &val)) {
_MSG("DECT packet source '" + name + "': Failed to set sniffer mode SYNC: " +
string(strerror(errno)), MSGFLAG_ERROR);
return -1;
}
/* set RFPI we're syncing to */
uint8_t mrfpi[5];
for (unsigned int x = 0; x < 5; x++)
mrfpi[x] = in_rfpi[x];
if (ioctl(serial_fd, COA_IOCTL_SETRFPI, mrfpi)) {
_MSG("DECT packet source '" + name + "': Failed to set sniffer sync RFPI: " +
string(strerror(errno)), MSGFLAG_ERROR);
return -1;
}
scan_mode = MODE_SYNC_CALL_SCAN;
// Caller should turn off PST channel hopping
// globalreg->sourcetracker->SetSourceHopping(FetchUUID(), 0, in_channel);
return 1;
}
int PacketSource_Dect::StartScanFp() {
if (serial_fd == -1)
return -1;
if (scan_mode == MODE_ASYNC_FP_SCAN)
return 0;
/* start sniffer mode */
int val = COA_MODE_SNIFF | COA_SUBMODE_SNIFF_SCANFP;
if (ioctl(serial_fd, COA_IOCTL_MODE, &val)) {
_MSG("DECT packet source '" + name + "': Failed to set sniffer scan FP: " +
string(strerror(errno)), MSGFLAG_ERROR);
return -1;
}
scan_mode = MODE_ASYNC_FP_SCAN;
if (sync)
sync = false;
// Caller should turn on hopping
// globalreg->sourcetracker->SetSourceHopping(FetchUUID(), 1, 0);
return 1;
}
int PacketSource_Dect::OpenSource() {
if ((serial_fd = open(serialdevice.c_str(), O_RDONLY)) == -1) {
_MSG("DECT packet source '" + name + "': Failed to open DECT serial device: " +
string(strerror(errno)), MSGFLAG_ERROR);
return 0;
}
return StartScanFp();
}
int PacketSource_Dect::CloseSource() {
if (serial_fd >= 0) {
close(serial_fd);
serial_fd = -1;
}
return 1;
}
int PacketSource_Dect::Poll() {
unsigned char buf[7];
int rbytes = -1;
dect_packinfo *pi = new dect_packinfo;
kis_packet *newpack;
kis_datachunk *dectchunk = NULL;
pi->sync = sync;
pi->scanmode = scan_mode;
pi->channel = FetchChannel();
if (scan_mode == MODE_ASYNC_FP_SCAN || scan_mode == MODE_ASYNC_PP_SCAN) {
if ((rbytes = read(serial_fd, &(pi->sdata), sizeof(dect_data_scan_t))) !=
sizeof(dect_data_scan_t)) {
_MSG("DECT packet source '" + name + "': Failed to read scan data: " +
string(strerror(errno)), MSGFLAG_ERROR);
delete(pi);
return 0;
}
// Make a scan chunk
dectchunk = new kis_datachunk;
dectchunk->length = sizeof(dect_data_scan_t);
dectchunk->data = new uint8_t[dectchunk->length];
memcpy(dectchunk->data, &(pi->sdata), dectchunk->length);
dectchunk->source_id = source_id;
dectchunk->dlt = KDLT_DECTSCAN;
} else if (scan_mode == MODE_SYNC_CALL_SCAN) {
if ((rbytes = read(serial_fd, &(pi->pdata), sizeof(pp_packet_t))) !=
sizeof(pp_packet_t)) {
_MSG("DECT packet source '" + name + "': Failed to read scan data: " +
string(strerror(errno)), MSGFLAG_ERROR);
delete(pi);
return 0;
} else {
if (!sync) {
_MSG("DECT packet source '" + name + "': Synced to call", MSGFLAG_INFO);
sync = true;
}
// Make a data chunk
dectchunk = new kis_datachunk;
dectchunk->length = 53;
dectchunk->data = new uint8_t[dectchunk->length];
memcpy(dectchunk->data, pi->pdata.data, dectchunk->length);
dectchunk->source_id = source_id;
dectchunk->dlt = KDLT_DECTCALL;
}
} else {
// Unknown mode during poll
delete(pi);
return 0;
}
newpack = globalreg->packetchain->GeneratePacket();
kis_ref_capsource *csrc_ref = new kis_ref_capsource;
csrc_ref->ref_source = this;
newpack->insert(_PCM(PACK_COMP_KISCAPSRC), csrc_ref);
newpack->insert(pack_comp_dect, pi);
if (dectchunk)
newpack->insert(_PCM(PACK_COMP_LINKFRAME), dectchunk);
globalreg->packetchain->ProcessPacket(newpack);
// printf("debug - dect newpack\n");
return 1;
}
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