author | max <max> | 2003-03-04 14:04:52 (UTC) |
---|---|---|
committer | max <max> | 2003-03-04 14:04:52 (UTC) |
commit | 3adca473d5440b00e15781627e00465350e9118b (patch) (unidiff) | |
tree | e60e57f10c8297eee39f9e31974f9199013c4930 /noncore/net | |
parent | 7cf53b4030437bdbd405b8b16684ba9f68e2891d (diff) | |
download | opie-3adca473d5440b00e15781627e00465350e9118b.zip opie-3adca473d5440b00e15781627e00465350e9118b.tar.gz opie-3adca473d5440b00e15781627e00465350e9118b.tar.bz2 |
start_sniff
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 | |||
@@ -13,2 +13,3 @@ | |||
13 | 13 | ||
14 | |||
14 | /* Main function of wellenreiterd */ | 15 | /* Main function of wellenreiterd */ |
@@ -20,3 +21,3 @@ int main(int argc, char **argv) | |||
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; |
@@ -42,22 +43,10 @@ int main(int argc, char **argv) | |||
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 | ||
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 | |||
@@ -8,5 +8,5 @@ | |||
8 | #include "wl_log.hh" | 8 | #include "wl_log.hh" |
9 | 9 | pcap_t *handletopcap; | |
10 | /* main card into monitor function */ | 10 | /* main card into monitor function */ |
11 | int card_into_monitormode (pcap_t **orighandle, const char *device, int cardtype) | 11 | int card_into_monitormode (const char *device, int cardtype) |
12 | { | 12 | { |
@@ -154,2 +154,47 @@ int card_check_rfmon_datalink (const char *device) | |||
154 | 154 | ||
155 | /* Ipaq running familiar does not have a loopback device, we need one */ | ||
156 | int 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 */ |
@@ -217,12 +262,2 @@ int card_remove_promisc (const char *device) | |||
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*/ |
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 | |||
@@ -40,2 +40,4 @@ extern "C" | |||
40 | 40 | ||
41 | extern pcap_t *handletopcap; | ||
42 | |||
41 | /* Defines, used for the card setup */ | 43 | /* Defines, used for the card setup */ |
@@ -60,3 +62,4 @@ extern "C" | |||
60 | int card_check_rfmon_datalink (const char *device); | 62 | int card_check_rfmon_datalink (const char *device); |
61 | int card_into_monitormode (pcap_t **, const char *, int); | 63 | int card_into_monitormode (const char *, int); |
64 | int check_loopback(); | ||
62 | int card_set_promisc_up (const char *device); | 65 | int card_set_promisc_up (const char *device); |
@@ -69,3 +72,2 @@ int card_detect_channels (char * device); | |||
69 | 72 | ||
70 | |||
71 | /*------------------------------------------------------------------*/ | 73 | /*------------------------------------------------------------------*/ |
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 | |||
@@ -12,2 +12,73 @@ | |||
12 | #include "wl_proto.hh" | 12 | #include "wl_proto.hh" |
13 | #include "cardmode.hh" | ||
14 | |||
15 | int 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 | |||
69 | int 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 | ||
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 | |||
@@ -42,2 +42,6 @@ struct packetinfo | |||
42 | 42 | ||
43 | /* Function definitions */ | ||
44 | /* Used for stoping and starting the sniffer process */ | ||
45 | int start_sniffer(const char *device, int cardtype); | ||
46 | int stop_sniffer(const char *device, int cardtype); | ||
43 | void process_packets(const struct pcap_pkthdr* pkthdr,const u_char* packet, char *, int); | 47 | void process_packets(const struct pcap_pkthdr* pkthdr,const u_char* packet, char *, int); |
@@ -46,3 +50,2 @@ void etheraddr_string(register const u_char *ep,char * text); | |||
46 | int handle_beacon(u_int16_t fc, const u_char *p,struct packetinfo *ppinfo); | 50 | int handle_beacon(u_int16_t fc, const u_char *p,struct packetinfo *ppinfo); |
47 | |||
48 | int GetHeaderLength(u_int16_t fc); | 51 | int GetHeaderLength(u_int16_t fc); |
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 | |||
@@ -40,2 +40,3 @@ typedef struct { | |||
40 | 40 | ||
41 | |||
41 | #endif /* WL_TYPES_HH */ | 42 | #endif /* WL_TYPES_HH */ |