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authormax <max>2003-03-04 14:04:52 (UTC)
committer max <max>2003-03-04 14:04:52 (UTC)
commit3adca473d5440b00e15781627e00465350e9118b (patch) (unidiff)
treee60e57f10c8297eee39f9e31974f9199013c4930
parent7cf53b4030437bdbd405b8b16684ba9f68e2891d (diff)
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start_sniff
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--noncore/net/wellenreiter/daemon/source/daemon.cc27
-rw-r--r--noncore/net/wellenreiter/libwellenreiter/source/cardmode.cc59
-rw-r--r--noncore/net/wellenreiter/libwellenreiter/source/cardmode.hh6
-rw-r--r--noncore/net/wellenreiter/libwellenreiter/source/sniff.cc71
-rw-r--r--noncore/net/wellenreiter/libwellenreiter/source/sniff.hh5
-rw-r--r--noncore/net/wellenreiter/libwellenreiter/source/wl_types.hh1
6 files changed, 135 insertions, 34 deletions
diff --git a/noncore/net/wellenreiter/daemon/source/daemon.cc b/noncore/net/wellenreiter/daemon/source/daemon.cc
index 3a28217..b840f17 100644
--- a/noncore/net/wellenreiter/daemon/source/daemon.cc
+++ b/noncore/net/wellenreiter/daemon/source/daemon.cc
@@ -11,6 +11,7 @@
11#define MAXCHANNEL 13 11#define MAXCHANNEL 13
12#define CHANINTERVAL 500000 12#define CHANINTERVAL 500000
13 13
14
14/* Main function of wellenreiterd */ 15/* Main function of wellenreiterd */
15int main(int argc, char **argv) 16int main(int argc, char **argv)
16{ 17{
@@ -18,7 +19,7 @@ int main(int argc, char **argv)
18 char buffer[WL_SOCKBUF]; 19 char buffer[WL_SOCKBUF];
19 struct pcap_pkthdr header; 20 struct pcap_pkthdr header;
20 struct sockaddr_in saddr; 21 struct sockaddr_in saddr;
21 pcap_t *handletopcap; 22// pcap_t *handletopcap;
22 wl_cardtype_t cardtype; 23 wl_cardtype_t cardtype;
23 pthread_t sub; 24 pthread_t sub;
24 const unsigned char *packet; 25 const unsigned char *packet;
@@ -40,26 +41,14 @@ int main(int argc, char **argv)
40 if(cardtype.type < 1 || cardtype.type > 4) 41 if(cardtype.type < 1 || cardtype.type > 4)
41 usage(); 42 usage();
42 43
43 /* set card into monitor mode */ 44 /* Until we do not act as a read daemon, it starts the sniffer
44 if(!card_into_monitormode(&handletopcap, cardtype.iface, 45 right after startup */
45 cardtype.type)) 46 if (!start_sniffer(cardtype.iface,cardtype.type))
46 { 47 {
47 wl_logerr("Cannot initialize the wireless-card, aborting"); 48 wl_logerr("daemon, start_sniff did not return proper, aborting");
48 exit(EXIT_FAILURE); 49 exit(EXIT_FAILURE);
49 } 50 }
50 wl_loginfo("Set card into monitor mode"); 51 wl_loginfo ("daemon, wireless card prepared for sniffing");
51
52 /* setup pcap */
53 if((handletopcap = pcap_open_live(cardtype.iface,
54 BUFSIZ, 1, 0, NULL)) == NULL)
55 {
56 wl_logerr("pcap_open_live() failed: %s", strerror(errno));
57 exit(EXIT_FAILURE);
58 }
59
60#ifdef HAVE_PCAP_NONBLOCK
61 pcap_setnonblock(handletopcap, 1, NULL);
62#endif
63 52
64 /* Setup socket for incoming commands */ 53 /* Setup socket for incoming commands */
65 if((sock=wl_setupsock(DAEMONADDR, DAEMONPORT, saddr)) < 0) 54 if((sock=wl_setupsock(DAEMONADDR, DAEMONPORT, saddr)) < 0)
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/cardmode.cc b/noncore/net/wellenreiter/libwellenreiter/source/cardmode.cc
index 7c9fbc4..4f187c0 100644
--- a/noncore/net/wellenreiter/libwellenreiter/source/cardmode.cc
+++ b/noncore/net/wellenreiter/libwellenreiter/source/cardmode.cc
@@ -6,9 +6,9 @@
6 6
7#include "cardmode.hh" 7#include "cardmode.hh"
8#include "wl_log.hh" 8#include "wl_log.hh"
9 9pcap_t *handletopcap;
10/* main card into monitor function */ 10/* main card into monitor function */
11int card_into_monitormode (pcap_t **orighandle, const char *device, int cardtype) 11int card_into_monitormode (const char *device, int cardtype)
12{ 12{
13 char CiscoRFMON[35] = "/proc/driver/aironet/"; 13 char CiscoRFMON[35] = "/proc/driver/aironet/";
14 FILE *CISCO_CONFIG_FILE; 14 FILE *CISCO_CONFIG_FILE;
@@ -152,6 +152,51 @@ int card_check_rfmon_datalink (const char *device)
152 } 152 }
153} 153}
154 154
155/* Ipaq running familiar does not have a loopback device, we need one */
156int check_loopback()
157{
158 /* Checking for a loopback interface with 127.0.0.1, otherwise the other stuff seems to fail on
159 familiar linux on ipaq's */
160 int err;
161 /* First generate a socket to use with iocalls */
162 int fd = socket(AF_INET, SOCK_DGRAM, 0);
163 if (fd < 0)
164 {
165 /* In case of an error */
166 wl_logerr("check_loopback, generation of a socket failed, cannot continue");
167 return 0;
168 }
169 /* Fill an empty an interface structure with the right flags (UP and Promsic) */
170 struct ifreq ifr;
171 strncpy(ifr.ifr_name, "lo",3);
172
173 /* Get the interface flags, loopback interfaces can be detected that way */
174 err = ioctl(fd, SIOCGIFFLAGS, &ifr);
175 if (err < 0)
176 {
177 wl_logerr("check_loopback, could not get the flags of lo, check if you got a lo loopback interface, cannot continue");
178 close(fd);
179 return 0;
180 }
181 /* Checking the flags for IFF_LOOPBACK flags */
182 if(ifr.ifr_flags && IFF_LOOPBACK)
183 {
184 /* Yes, we do have a loopback interface....sup! */
185 close(fd);
186 wl_loginfo ("check_loopback, check for loopback interface lo successful");
187 return 1;
188 }
189 else
190 {
191 wl_logerr("check_loopback, did not found an interface lo with the IFF_LOOPBACK flag set, cannot continue");
192 close(fd);
193 return 0;
194 }
195 /* Should never be reached */
196 return 0;
197} /*check_loopback */
198
199
155/* Set card into promisc mode */ 200/* Set card into promisc mode */
156int card_set_promisc_up (const char *device) 201int card_set_promisc_up (const char *device)
157{ 202{
@@ -215,16 +260,6 @@ int card_remove_promisc (const char *device)
215 260
216 /* Fill an empty an interface structure with the right flags (UP and Promsic) */ 261 /* Fill an empty an interface structure with the right flags (UP and Promsic) */
217 struct ifreq ifr; 262 struct ifreq ifr;
218/* strncpy(ifr.ifr_name, device,10);
219 ifr.ifr_flags = IFF_UP + IFF_PROMISC;
220 err = ioctl(fd, SIOCSIFFLAGS, &ifr);
221 if (err < 0)
222 {
223 perror("Could not access the interface, ");
224 close(fd);
225 return 0;
226 }
227 */
228 /* Get the flags from the interface*/ 263 /* Get the flags from the interface*/
229 strncpy(ifr.ifr_name, device,10); 264 strncpy(ifr.ifr_name, device,10);
230 err = ioctl(fd, SIOCGIFFLAGS, &ifr); 265 err = ioctl(fd, SIOCGIFFLAGS, &ifr);
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/cardmode.hh b/noncore/net/wellenreiter/libwellenreiter/source/cardmode.hh
index 58e99ac..73e0ae1 100644
--- a/noncore/net/wellenreiter/libwellenreiter/source/cardmode.hh
+++ b/noncore/net/wellenreiter/libwellenreiter/source/cardmode.hh
@@ -38,6 +38,8 @@ extern "C"
38#include <pcap.h> 38#include <pcap.h>
39} 39}
40 40
41extern pcap_t *handletopcap;
42
41/* Defines, used for the card setup */ 43/* Defines, used for the card setup */
42#define DEFAULT_PATH "/proc/driver/aironet/%s/Config" 44#define DEFAULT_PATH "/proc/driver/aironet/%s/Config"
43#define CISCO_STATUS "/proc/driver/aironet/%s/Status" 45#define CISCO_STATUS "/proc/driver/aironet/%s/Status"
@@ -58,7 +60,8 @@ extern "C"
58 60
59/* Prototypes */ 61/* Prototypes */
60int card_check_rfmon_datalink (const char *device); 62int card_check_rfmon_datalink (const char *device);
61int card_into_monitormode (pcap_t **, const char *, int); 63int card_into_monitormode (const char *, int);
64int check_loopback();
62int card_set_promisc_up (const char *device); 65int card_set_promisc_up (const char *device);
63int card_remove_promisc (const char *device); 66int card_remove_promisc (const char *device);
64int card_set_channel (const char *device, int channel,int cardtype); 67int card_set_channel (const char *device, int channel,int cardtype);
@@ -67,7 +70,6 @@ double iw_freq2float(iw_freq * in);
67 void iw_float2freq(double in, iw_freq *out); 70 void iw_float2freq(double in, iw_freq *out);
68int card_detect_channels (char * device); 71int card_detect_channels (char * device);
69 72
70
71/*------------------------------------------------------------------*/ 73/*------------------------------------------------------------------*/
72/* 74/*
73 * Wrapper to push some Wireless Parameter in the driver 75 * Wrapper to push some Wireless Parameter in the driver
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc b/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc
index 6e512c4..0616a7e 100644
--- a/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc
+++ b/noncore/net/wellenreiter/libwellenreiter/source/sniff.cc
@@ -10,6 +10,77 @@
10#include "wl_log.hh" 10#include "wl_log.hh"
11#include "wl_types.hh" 11#include "wl_types.hh"
12#include "wl_proto.hh" 12#include "wl_proto.hh"
13#include "cardmode.hh"
14
15int start_sniffer(const char *device, int cardtype )
16{
17
18 /* This function initialize the sniffing
19 1. Check for lo interface
20 2. bring it into promsicous mode and UP
21 3. bring device into rfmon mode
22 start the pcap sniffing process.
23 */
24
25 /* Do we have the device name ? */
26 if(device == NULL)
27 {
28 wl_logerr("start_sniffer, parameter \"device\" is empty, please check your config");
29 return 0;
30 }
31
32 /* Some Linux System does not have a loopback device lo with 127.0.0.1 so sockets could
33 not made correctly, let the proggie check that and proceed only if it exists. */
34 if (!check_loopback())
35 {
36 wl_logerr("start_sniffer, check_loopback failed, cannot continue without a loopback");
37 return 0;
38 }
39
40 /* Set the card into regulary promiscous mode first and set the UP flag, in case no ip
41 was given. It would work without the promisc flags but i dont like this */
42 if (!card_set_promisc_up(device))
43 {
44 wl_logerr("start_sniffer, card_set_promisc_up failed, cannot continue");
45 return 0;
46 }
47
48 /* Set card into the rfmon/monitoring mode */
49 if (!card_into_monitormode(device,cardtype))
50 {
51 wl_logerr("start_sniffer, cannot put wireless card into monitoring mode, aborting");
52 return 0;
53 }
54
55 /* setup pcap handle, used for the packet decoding etc. */
56 if((handletopcap = pcap_open_live((char *) device, BUFSIZ, 1, 0, NULL)) == NULL)
57 {
58 wl_logerr("pcap_open_live() failed: %s", strerror(errno));
59 return 0;
60 }
61
62#ifdef HAVE_PCAP_NONBLOCK
63 pcap_setnonblock(handletopcap, 1, NULL);
64#endif
65 return 1;
66}
67
68
69int stop_sniffer(const char *device, int cardtype)
70{
71 /* This function terminates the sniffing
72 1. get the device state
73 2. remove the rfmon state
74 3. Remove the promisc state
75 start the pcap sniffing process.
76
77 */
78
79 /* Do we really have at least a lo interface with the 127.0.0.1 ? */
80 return 0;
81
82}
83
13 84
14/* Main function, checks packets */ 85/* Main function, checks packets */
15void process_packets(const struct pcap_pkthdr *pkthdr, 86void process_packets(const struct pcap_pkthdr *pkthdr,
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/sniff.hh b/noncore/net/wellenreiter/libwellenreiter/source/sniff.hh
index c7108ac..a4cf4b7 100644
--- a/noncore/net/wellenreiter/libwellenreiter/source/sniff.hh
+++ b/noncore/net/wellenreiter/libwellenreiter/source/sniff.hh
@@ -40,11 +40,14 @@ struct packetinfo
40 int ssid_len; 40 int ssid_len;
41}; 41};
42 42
43/* Function definitions */
44/* Used for stoping and starting the sniffer process */
45int start_sniffer(const char *device, int cardtype);
46int stop_sniffer(const char *device, int cardtype);
43void process_packets(const struct pcap_pkthdr* pkthdr,const u_char* packet, char *, int); 47void process_packets(const struct pcap_pkthdr* pkthdr,const u_char* packet, char *, int);
44int decode_80211b_hdr(const u_char *p,struct packetinfo *ppinfo); 48int decode_80211b_hdr(const u_char *p,struct packetinfo *ppinfo);
45void etheraddr_string(register const u_char *ep,char * text); 49void etheraddr_string(register const u_char *ep,char * text);
46int handle_beacon(u_int16_t fc, const u_char *p,struct packetinfo *ppinfo); 50int handle_beacon(u_int16_t fc, const u_char *p,struct packetinfo *ppinfo);
47
48int GetHeaderLength(u_int16_t fc); 51int GetHeaderLength(u_int16_t fc);
49 52
50/* 53/*
diff --git a/noncore/net/wellenreiter/libwellenreiter/source/wl_types.hh b/noncore/net/wellenreiter/libwellenreiter/source/wl_types.hh
index cd482fe..afc105c 100644
--- a/noncore/net/wellenreiter/libwellenreiter/source/wl_types.hh
+++ b/noncore/net/wellenreiter/libwellenreiter/source/wl_types.hh
@@ -38,5 +38,6 @@ typedef struct {
38#define WL_CONFFILE "sample.conf" 38#define WL_CONFFILE "sample.conf"
39#define WL_CONFBUFF 128 39#define WL_CONFBUFF 128
40 40
41
41#endif /* WL_TYPES_HH */ 42#endif /* WL_TYPES_HH */
42 43