mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-12-23 06:02:37 +01:00
820 lines
18 KiB
C
820 lines
18 KiB
C
/*
|
|
*
|
|
* Wireless daemon for Linux
|
|
*
|
|
* Copyright (C) 2013-2019 Intel Corporation. All rights reserved.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#define _GNU_SOURCE
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <getopt.h>
|
|
#include <signal.h>
|
|
#include <sys/socket.h>
|
|
#include <linux/genetlink.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <linux/if_arp.h>
|
|
#include <ell/ell.h>
|
|
|
|
#ifndef ARPHRD_NETLINK
|
|
#define ARPHRD_NETLINK 824
|
|
#endif
|
|
|
|
#include "linux/nl80211.h"
|
|
#include "monitor/nlmon.h"
|
|
#include "monitor/pcap.h"
|
|
#include "monitor/display.h"
|
|
|
|
#define MAX_SNAPLEN (1024 * 16)
|
|
|
|
static struct nlmon *nlmon = NULL;
|
|
static const char *writer_path = NULL;
|
|
static struct l_timeout *timeout = NULL;
|
|
static struct nlmon_config config;
|
|
|
|
#define NLA_OK(nla,len) ((len) >= (int) sizeof(struct nlattr) && \
|
|
(nla)->nla_len >= sizeof(struct nlattr) && \
|
|
(nla)->nla_len <= (len))
|
|
#define NLA_NEXT(nla,attrlen) ((attrlen) -= NLA_ALIGN((nla)->nla_len), \
|
|
(struct nlattr*)(((char*)(nla)) + \
|
|
NLA_ALIGN((nla)->nla_len)))
|
|
|
|
#define NLA_LENGTH(len) (NLA_ALIGN(sizeof(struct nlattr)) + (len))
|
|
#define NLA_DATA(nla) ((void*)(((char*)(nla)) + NLA_LENGTH(0)))
|
|
#define NLA_PAYLOAD(nla) ((int)((nla)->nla_len - NLA_LENGTH(0)))
|
|
|
|
#define NLMON_TYPE "nlmon"
|
|
#define NLMON_LEN 5
|
|
|
|
struct iwmon_interface {
|
|
char *ifname;
|
|
bool exists;
|
|
struct l_netlink *rtnl;
|
|
struct l_netlink *genl;
|
|
};
|
|
|
|
static struct iwmon_interface monitor_interface = { };
|
|
|
|
static void genl_parse(uint16_t type, const void *data, uint32_t len,
|
|
const char *ifname)
|
|
{
|
|
const struct genlmsghdr *genlmsg = data;
|
|
const struct nlattr *nla;
|
|
char name[GENL_NAMSIZ];
|
|
uint16_t id = 0;
|
|
|
|
if (nlmon)
|
|
return;
|
|
|
|
if (type != GENL_ID_CTRL)
|
|
return;
|
|
|
|
if (genlmsg->cmd != CTRL_CMD_NEWFAMILY)
|
|
return;
|
|
|
|
for (nla = data + GENL_HDRLEN; NLA_OK(nla, len);
|
|
nla = NLA_NEXT(nla, len)) {
|
|
switch (nla->nla_type & NLA_TYPE_MASK) {
|
|
case CTRL_ATTR_FAMILY_ID:
|
|
id = *((uint16_t *) NLA_DATA(nla));
|
|
break;
|
|
case CTRL_ATTR_FAMILY_NAME:
|
|
strncpy(name, NLA_DATA(nla), GENL_NAMSIZ - 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (id == 0)
|
|
return;
|
|
|
|
if (!strcmp(name, NL80211_GENL_NAME)) {
|
|
nlmon = nlmon_open(ifname, id, writer_path, &config);
|
|
if (!nlmon)
|
|
l_main_quit();
|
|
}
|
|
}
|
|
|
|
static void genl_notify(uint16_t type, const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
const char *ifname = user_data;
|
|
|
|
genl_parse(type, data, len, ifname);
|
|
}
|
|
|
|
static void genl_callback(int error, uint16_t type, const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
const char *ifname = user_data;
|
|
|
|
if (error < 0) {
|
|
fprintf(stderr, "Failed to lookup nl80211 family\n");
|
|
l_main_quit();
|
|
return;
|
|
}
|
|
|
|
genl_parse(type, data, len, ifname);
|
|
}
|
|
|
|
static struct l_netlink *genl_lookup(const char *ifname)
|
|
{
|
|
struct l_netlink *genl;
|
|
char buf[GENL_HDRLEN + NLA_HDRLEN + GENL_NAMSIZ];
|
|
struct genlmsghdr *genlmsg;
|
|
struct nlattr *nla;
|
|
|
|
genl = l_netlink_new(NETLINK_GENERIC);
|
|
|
|
l_netlink_register(genl, GENL_ID_CTRL, genl_notify, NULL, NULL);
|
|
|
|
genlmsg = (struct genlmsghdr *) buf;
|
|
genlmsg->cmd = CTRL_CMD_GETFAMILY;
|
|
genlmsg->version = 0;
|
|
genlmsg->reserved = 0;
|
|
|
|
nla = (struct nlattr *) (buf + GENL_HDRLEN);
|
|
nla->nla_len = NLA_HDRLEN + GENL_NAMSIZ;
|
|
nla->nla_type = CTRL_ATTR_FAMILY_NAME;
|
|
strncpy(buf + GENL_HDRLEN + NLA_HDRLEN,
|
|
NL80211_GENL_NAME, GENL_NAMSIZ);
|
|
|
|
l_netlink_send(genl, GENL_ID_CTRL, 0, buf, sizeof(buf),
|
|
genl_callback, (char *) ifname, NULL);
|
|
|
|
return genl;
|
|
}
|
|
|
|
static size_t rta_add(void *rta_buf, unsigned short type, uint16_t len,
|
|
const void *data)
|
|
{
|
|
unsigned short rta_len = RTA_LENGTH(len);
|
|
struct rtattr *rta = rta_buf;
|
|
|
|
memset(RTA_DATA(rta), 0, RTA_SPACE(len));
|
|
|
|
rta->rta_len = rta_len;
|
|
rta->rta_type = type;
|
|
memcpy(RTA_DATA(rta), data, len);
|
|
|
|
return RTA_SPACE(len);
|
|
}
|
|
|
|
static bool rta_linkinfo_kind(struct rtattr *rta, unsigned short len,
|
|
const char* kind)
|
|
{
|
|
for (; RTA_OK(rta, len); rta = RTA_NEXT(rta, len)) {
|
|
if (rta->rta_type != IFLA_INFO_KIND)
|
|
continue;
|
|
|
|
if (rta->rta_len < NLMON_LEN)
|
|
continue;
|
|
|
|
if (memcmp(RTA_DATA(rta), kind, strlen(kind)))
|
|
continue;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static struct l_netlink *rtm_interface_send_message(struct l_netlink *rtnl,
|
|
const char *ifname,
|
|
uint16_t rtm_msg_type,
|
|
l_netlink_command_func_t callback,
|
|
void *user_data,
|
|
l_netlink_destroy_func_t destroy)
|
|
{
|
|
size_t nlmon_type_len = strlen(NLMON_TYPE);
|
|
unsigned short ifname_len = 0;
|
|
size_t bufsize;
|
|
struct ifinfomsg *rtmmsg;
|
|
void *rta_buf;
|
|
struct rtattr *linkinfo_rta;
|
|
|
|
if (ifname) {
|
|
ifname_len = strlen(ifname) + 1;
|
|
|
|
if (ifname_len < 2 || ifname_len > IFNAMSIZ)
|
|
return NULL;
|
|
}
|
|
|
|
if (!rtnl)
|
|
rtnl = l_netlink_new(NETLINK_ROUTE);
|
|
|
|
if (!rtnl)
|
|
return NULL;
|
|
|
|
bufsize = NLMSG_LENGTH(sizeof(struct ifinfomsg)) +
|
|
RTA_SPACE(ifname_len) + RTA_SPACE(0) +
|
|
RTA_SPACE(nlmon_type_len);
|
|
|
|
rtmmsg = l_malloc(bufsize);
|
|
memset(rtmmsg, 0, bufsize);
|
|
|
|
rtmmsg->ifi_family = AF_UNSPEC;
|
|
rtmmsg->ifi_change = ~0;
|
|
|
|
rta_buf = rtmmsg + 1;
|
|
|
|
if (ifname)
|
|
rta_buf += rta_add(rta_buf, IFLA_IFNAME, ifname_len, ifname);
|
|
|
|
linkinfo_rta = rta_buf;
|
|
|
|
rta_buf += rta_add(rta_buf, IFLA_LINKINFO, 0, NULL);
|
|
rta_buf += rta_add(rta_buf, IFLA_INFO_KIND, nlmon_type_len, NLMON_TYPE);
|
|
|
|
linkinfo_rta->rta_len = rta_buf - (void *) linkinfo_rta;
|
|
|
|
switch (rtm_msg_type) {
|
|
case RTM_NEWLINK:
|
|
rtmmsg->ifi_flags = IFF_UP | IFF_ALLMULTI | IFF_NOARP;
|
|
|
|
l_netlink_send(rtnl, RTM_NEWLINK, NLM_F_CREATE|NLM_F_EXCL,
|
|
rtmmsg, rta_buf - (void *) rtmmsg, callback,
|
|
user_data, destroy);
|
|
break;
|
|
|
|
case RTM_DELLINK:
|
|
rta_buf += rta_add(rta_buf, IFLA_IFNAME, ifname_len, ifname);
|
|
|
|
l_netlink_send(rtnl, RTM_DELLINK, 0, rtmmsg,
|
|
rta_buf - (void *)rtmmsg, callback, user_data,
|
|
destroy);
|
|
break;
|
|
|
|
case RTM_GETLINK:
|
|
l_netlink_send(rtnl, RTM_GETLINK, NLM_F_DUMP, rtmmsg,
|
|
rta_buf - (void *)rtmmsg, callback, user_data,
|
|
destroy);
|
|
break;
|
|
|
|
default:
|
|
l_netlink_destroy(rtnl);
|
|
rtnl = NULL;
|
|
break;
|
|
}
|
|
|
|
l_free(rtmmsg);
|
|
|
|
return rtnl;
|
|
}
|
|
|
|
static struct l_netlink *iwmon_interface_disable(
|
|
struct iwmon_interface *monitor_interface)
|
|
{
|
|
if (!monitor_interface->exists)
|
|
return rtm_interface_send_message(monitor_interface->rtnl,
|
|
monitor_interface->ifname,
|
|
RTM_DELLINK, NULL, NULL, NULL);
|
|
|
|
return monitor_interface->rtnl;
|
|
}
|
|
|
|
static void iwmon_interface_enable_callback(int error, uint16_t type,
|
|
const void *data, uint32_t len,
|
|
void *user_data)
|
|
{
|
|
struct iwmon_interface *monitor_interface = user_data;
|
|
|
|
if (error) {
|
|
fprintf(stderr, "Failed to create monitor interface %s: %s\n",
|
|
monitor_interface->ifname, strerror(error));
|
|
|
|
l_main_quit();
|
|
return;
|
|
}
|
|
|
|
printf("Created interface %s\n", monitor_interface->ifname);
|
|
|
|
monitor_interface->genl = genl_lookup(monitor_interface->ifname);
|
|
}
|
|
|
|
static struct l_netlink *iwmon_interface_enable(
|
|
struct iwmon_interface *monitor_interface)
|
|
{
|
|
return rtm_interface_send_message(monitor_interface->rtnl,
|
|
monitor_interface->ifname,
|
|
RTM_NEWLINK,
|
|
iwmon_interface_enable_callback,
|
|
monitor_interface, NULL);
|
|
}
|
|
|
|
static void iwmon_interface_lookup_done(void *user_data)
|
|
{
|
|
struct iwmon_interface *monitor_interface = user_data;
|
|
|
|
if (monitor_interface->exists && monitor_interface->ifname) {
|
|
printf("Using %s as Monitor interface\n",
|
|
monitor_interface->ifname);
|
|
|
|
monitor_interface->genl =
|
|
genl_lookup(monitor_interface->ifname);
|
|
|
|
return;
|
|
}
|
|
|
|
if (!monitor_interface->ifname)
|
|
monitor_interface->ifname = l_strdup(NLMON_TYPE);
|
|
|
|
iwmon_interface_enable(monitor_interface);
|
|
}
|
|
|
|
static void iwmon_interface_lookup_callback(int error, uint16_t type,
|
|
const void *data, uint32_t len,
|
|
void *user_data)
|
|
{
|
|
const struct ifinfomsg *rtmmsg = data;
|
|
struct rtattr *rta;
|
|
struct iwmon_interface *monitor_interface = user_data;
|
|
const char *ifname = NULL;
|
|
unsigned short ifname_len = 0;
|
|
bool nlmon = false;
|
|
|
|
if (error)
|
|
return;
|
|
|
|
if (type != RTM_NEWLINK)
|
|
return;
|
|
|
|
for (rta = (struct rtattr *)(rtmmsg + 1); RTA_OK(rta, len);
|
|
rta = RTA_NEXT(rta, len)) {
|
|
switch(rta->rta_type) {
|
|
case IFLA_IFNAME:
|
|
ifname = RTA_DATA(rta);
|
|
ifname_len = rta->rta_len;
|
|
break;
|
|
|
|
case IFLA_LINKINFO:
|
|
nlmon = rta_linkinfo_kind(RTA_DATA(rta), rta->rta_len,
|
|
NLMON_TYPE);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!ifname)
|
|
return;
|
|
|
|
if (!nlmon)
|
|
return;
|
|
|
|
if ((rtmmsg->ifi_flags & (IFF_UP | IFF_ALLMULTI | IFF_NOARP)) !=
|
|
(IFF_UP | IFF_ALLMULTI | IFF_NOARP))
|
|
return;
|
|
|
|
l_free(monitor_interface->ifname);
|
|
monitor_interface->ifname = l_strndup(ifname, ifname_len);
|
|
monitor_interface->exists = true;
|
|
}
|
|
|
|
static void iwmon_interface_lookup(struct iwmon_interface *monitor_interface)
|
|
{
|
|
monitor_interface->rtnl =
|
|
rtm_interface_send_message(monitor_interface->rtnl, NULL,
|
|
RTM_GETLINK,
|
|
iwmon_interface_lookup_callback,
|
|
monitor_interface,
|
|
iwmon_interface_lookup_done);
|
|
}
|
|
|
|
static int analyze_pcap(const char *pathname)
|
|
{
|
|
struct l_queue *genl_list;
|
|
const struct l_queue_entry *genl_entry;
|
|
struct pcap *pcap;
|
|
struct timeval tv;
|
|
void *buf;
|
|
uint32_t snaplen, len, real_len;
|
|
int exit_status;
|
|
unsigned long pkt_count = 0;
|
|
unsigned long pkt_short = 0;
|
|
unsigned long pkt_trunc = 0;
|
|
unsigned long pkt_ether = 0;
|
|
unsigned long pkt_pae = 0;
|
|
unsigned long pkt_netlink = 0;
|
|
unsigned long pkt_rtnl = 0;
|
|
unsigned long pkt_genl = 0;
|
|
unsigned long msg_netlink = 0;
|
|
unsigned long msg_rtnl = 0;
|
|
unsigned long msg_genl = 0;
|
|
bool first;
|
|
|
|
pcap = pcap_open(pathname);
|
|
if (!pcap)
|
|
return EXIT_FAILURE;
|
|
|
|
if (pcap_get_type(pcap) != PCAP_TYPE_LINUX_SLL) {
|
|
fprintf(stderr, "Invalid packet format\n");
|
|
exit_status = EXIT_FAILURE;
|
|
goto done;
|
|
}
|
|
|
|
snaplen = pcap_get_snaplen(pcap);
|
|
if (snaplen > MAX_SNAPLEN)
|
|
snaplen = MAX_SNAPLEN;
|
|
|
|
buf = malloc(snaplen);
|
|
if (!buf) {
|
|
fprintf(stderr, "Failed to allocate packet buffer\n");
|
|
exit_status = EXIT_FAILURE;
|
|
goto done;
|
|
}
|
|
|
|
genl_list = l_queue_new();
|
|
|
|
while (pcap_read(pcap, &tv, buf, snaplen, &len, &real_len)) {
|
|
struct nlmsghdr *nlmsg;
|
|
uint32_t aligned_len;
|
|
uint16_t arphrd_type;
|
|
uint16_t proto_type;
|
|
|
|
pkt_count++;
|
|
|
|
if (len < 16) {
|
|
pkt_short++;
|
|
continue;
|
|
}
|
|
|
|
arphrd_type = l_get_be16(buf + 2);
|
|
proto_type = l_get_be16(buf + 14);
|
|
|
|
switch (arphrd_type) {
|
|
case ARPHRD_ETHER:
|
|
pkt_ether++;
|
|
switch (proto_type) {
|
|
case ETH_P_PAE:
|
|
pkt_pae++;
|
|
break;
|
|
}
|
|
break;
|
|
case ARPHRD_NETLINK:
|
|
pkt_netlink++;
|
|
switch (proto_type) {
|
|
case NETLINK_ROUTE:
|
|
pkt_rtnl++;
|
|
break;
|
|
case NETLINK_GENERIC:
|
|
pkt_genl++;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (len < real_len) {
|
|
pkt_trunc++;
|
|
continue;
|
|
}
|
|
|
|
if (arphrd_type != ARPHRD_NETLINK)
|
|
continue;
|
|
|
|
aligned_len = NLMSG_ALIGN(len - 16);
|
|
|
|
for (nlmsg = buf + 16; NLMSG_OK(nlmsg, aligned_len);
|
|
nlmsg = NLMSG_NEXT(nlmsg, aligned_len)) {
|
|
uint16_t type = nlmsg->nlmsg_type;
|
|
|
|
msg_netlink++;
|
|
switch (proto_type) {
|
|
case NETLINK_ROUTE:
|
|
msg_rtnl++;
|
|
break;
|
|
case NETLINK_GENERIC:
|
|
if (type >= NLMSG_MIN_TYPE) {
|
|
l_queue_remove(genl_list,
|
|
L_UINT_TO_PTR(type));
|
|
l_queue_push_tail(genl_list,
|
|
L_UINT_TO_PTR(type));
|
|
}
|
|
msg_genl++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
printf("\n");
|
|
printf(" Analyzed file: %s\n", pathname);
|
|
printf("\n");
|
|
printf(" Number of packets: %lu\n", pkt_count);
|
|
printf(" Short packets: %lu\n", pkt_short);
|
|
printf(" Tuncated packets: %lu\n", pkt_trunc);
|
|
printf("\n");
|
|
printf(" Ethernet packets: %lu\n", pkt_ether);
|
|
printf(" PAE packets: %lu\n", pkt_pae);
|
|
printf("\n");
|
|
printf(" Netlink packets: %lu\n", pkt_netlink);
|
|
printf(" RTNL packets: %lu\n", pkt_rtnl);
|
|
printf(" GENL packets: %lu\n", pkt_genl);
|
|
printf("\n");
|
|
printf(" Netlink messages: %lu\n", msg_netlink);
|
|
printf(" RTNL messages: %lu\n", msg_rtnl);
|
|
printf(" GENL messages: %lu\n", msg_genl);
|
|
printf("\n");
|
|
for (genl_entry = l_queue_get_entries(genl_list), first = true;
|
|
genl_entry;
|
|
genl_entry = genl_entry->next, first = false) {
|
|
uint16_t family = L_PTR_TO_UINT(genl_entry->data);
|
|
const char *label, *desc;
|
|
|
|
if (first)
|
|
label = " GENL families:";
|
|
else
|
|
label = " ";
|
|
|
|
if (family == GENL_ID_CTRL)
|
|
desc = "nlctrl";
|
|
else
|
|
desc = "";
|
|
|
|
printf("%s 0x%02x (%u) %s\n", label, family, family, desc);
|
|
}
|
|
printf("\n");
|
|
|
|
l_queue_destroy(genl_list, NULL);
|
|
|
|
free(buf);
|
|
|
|
exit_status = EXIT_SUCCESS;
|
|
|
|
done:
|
|
pcap_close(pcap);
|
|
|
|
return exit_status;
|
|
}
|
|
|
|
static int process_pcap(struct pcap *pcap, uint16_t id)
|
|
{
|
|
struct nlmon *nlmon = NULL;
|
|
struct timeval tv;
|
|
uint8_t *buf;
|
|
uint32_t snaplen, len, real_len;
|
|
|
|
snaplen = pcap_get_snaplen(pcap);
|
|
if (snaplen > MAX_SNAPLEN)
|
|
snaplen = MAX_SNAPLEN;
|
|
|
|
buf = malloc(snaplen);
|
|
if (!buf) {
|
|
fprintf(stderr, "Failed to allocate packet buffer\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
nlmon = nlmon_create(id);
|
|
|
|
while (pcap_read(pcap, &tv, buf, snaplen, &len, &real_len)) {
|
|
uint16_t arphrd_type;
|
|
uint16_t proto_type;
|
|
uint16_t pkt_type;
|
|
|
|
if (len < 16) {
|
|
printf("Too short packet\n");
|
|
continue;
|
|
}
|
|
|
|
if (len < real_len) {
|
|
printf("Packet truncated from %u\n", real_len);
|
|
continue;
|
|
}
|
|
|
|
pkt_type = l_get_be16(buf);
|
|
arphrd_type = l_get_be16(buf + 2);
|
|
proto_type = l_get_be16(buf + 14);
|
|
|
|
switch (arphrd_type) {
|
|
case ARPHRD_ETHER:
|
|
switch (proto_type) {
|
|
case ETH_P_PAE:
|
|
nlmon_print_pae(nlmon, &tv, pkt_type, -1,
|
|
buf + 16, len - 16);
|
|
break;
|
|
}
|
|
break;
|
|
case ARPHRD_NETLINK:
|
|
switch (proto_type) {
|
|
case NETLINK_ROUTE:
|
|
nlmon_print_rtnl(nlmon, &tv,
|
|
buf + 16, len - 16);
|
|
break;
|
|
case NETLINK_GENERIC:
|
|
nlmon_print_genl(nlmon, &tv,
|
|
buf + 16, len - 16);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
printf("Unsupported ARPHRD %u\n", arphrd_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
nlmon_destroy(nlmon);
|
|
|
|
free(buf);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
static void main_loop_quit(struct l_timeout *timeout, void *user_data)
|
|
{
|
|
l_main_quit();
|
|
}
|
|
|
|
static void signal_handler(uint32_t signo, void *user_data)
|
|
{
|
|
switch (signo) {
|
|
case SIGINT:
|
|
case SIGTERM:
|
|
iwmon_interface_disable(&monitor_interface);
|
|
|
|
timeout = l_timeout_create(1, main_loop_quit, NULL, NULL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void usage(void)
|
|
{
|
|
printf("iwmon - Wireless monitor\n"
|
|
"Usage:\n");
|
|
printf("\tiwmon [options]\n");
|
|
printf("Options:\n"
|
|
"\t-r, --read <file> Read netlink PCAP trace file\n"
|
|
"\t-w, --write <file> Write netlink PCAP trace file\n"
|
|
"\t-a, --analyze <file> Analyze netlink PCAP trace file\n"
|
|
"\t-i, --interface <dev> Use specified netlink monitor\n"
|
|
"\t-n, --nortnl Don't show RTNL output\n"
|
|
"\t-y, --nowiphy Don't show 'New Wiphy' output\n"
|
|
"\t-s, --noscan Don't show scan result output\n"
|
|
"\t-h, --help Show help options\n");
|
|
}
|
|
|
|
static const struct option main_options[] = {
|
|
{ "read", required_argument, NULL, 'r' },
|
|
{ "write", required_argument, NULL, 'w' },
|
|
{ "analyze", required_argument, NULL, 'a' },
|
|
{ "nl80211", required_argument, NULL, 'F' },
|
|
{ "interface", required_argument, NULL, 'i' },
|
|
{ "nortnl", no_argument, NULL, 'n' },
|
|
{ "nowiphy", no_argument, NULL, 'y' },
|
|
{ "noscan", no_argument, NULL, 's' },
|
|
{ "version", no_argument, NULL, 'v' },
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ }
|
|
};
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const char *reader_path = NULL;
|
|
const char *analyze_path = NULL;
|
|
const char *ifname = NULL;
|
|
uint16_t nl80211_family = 0;
|
|
int exit_status;
|
|
|
|
for (;;) {
|
|
int opt;
|
|
|
|
opt = getopt_long(argc, argv, "r:w:a:F:i:nvhys",
|
|
main_options, NULL);
|
|
if (opt < 0)
|
|
break;
|
|
|
|
switch (opt) {
|
|
case 'r':
|
|
reader_path = optarg;
|
|
break;
|
|
case 'w':
|
|
writer_path = optarg;
|
|
break;
|
|
case 'a':
|
|
analyze_path = optarg;
|
|
break;
|
|
case 'F':
|
|
if (strlen(optarg) > 3) {
|
|
if (!strncasecmp(optarg, "0x", 2) &&
|
|
!isxdigit(optarg[2])) {
|
|
usage();
|
|
return EXIT_FAILURE;
|
|
}
|
|
nl80211_family = strtoul(optarg + 2, NULL, 16);
|
|
} else {
|
|
if (!isdigit(optarg[0])) {
|
|
usage();
|
|
return EXIT_FAILURE;
|
|
}
|
|
nl80211_family = strtoul(optarg, NULL, 10);
|
|
}
|
|
if (nl80211_family == 0) {
|
|
usage();
|
|
return EXIT_FAILURE;
|
|
}
|
|
break;
|
|
case 'i':
|
|
ifname = optarg;
|
|
break;
|
|
case 'n':
|
|
config.nortnl = true;
|
|
break;
|
|
case 'y':
|
|
config.nowiphy = true;
|
|
break;
|
|
case 's':
|
|
config.noscan = true;
|
|
break;
|
|
case 'v':
|
|
printf("%s\n", VERSION);
|
|
return EXIT_SUCCESS;
|
|
case 'h':
|
|
usage();
|
|
return EXIT_SUCCESS;
|
|
default:
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (argc - optind > 0) {
|
|
fprintf(stderr, "Invalid command line parameters\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (reader_path && analyze_path) {
|
|
fprintf(stderr, "Display and analyze can't be combined\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (!l_main_init())
|
|
return EXIT_FAILURE;
|
|
|
|
printf("Wireless monitor ver %s\n", VERSION);
|
|
|
|
if (analyze_path) {
|
|
exit_status = analyze_pcap(analyze_path);
|
|
goto done;
|
|
}
|
|
|
|
if (reader_path) {
|
|
struct pcap *pcap;
|
|
|
|
open_pager();
|
|
|
|
pcap = pcap_open(reader_path);
|
|
if (!pcap) {
|
|
exit_status = EXIT_FAILURE;
|
|
goto done;
|
|
}
|
|
|
|
if (pcap_get_type(pcap) != PCAP_TYPE_LINUX_SLL) {
|
|
fprintf(stderr, "Invalid packet format\n");
|
|
exit_status = EXIT_FAILURE;
|
|
} else
|
|
exit_status = process_pcap(pcap, nl80211_family);
|
|
|
|
pcap_close(pcap);
|
|
|
|
close_pager();
|
|
goto done;
|
|
}
|
|
|
|
monitor_interface.ifname = l_strdup(ifname);
|
|
iwmon_interface_lookup(&monitor_interface);
|
|
|
|
exit_status = l_main_run_with_signal(signal_handler, NULL);
|
|
|
|
l_netlink_destroy(monitor_interface.rtnl);
|
|
l_netlink_destroy(monitor_interface.genl);
|
|
l_free(monitor_interface.ifname);
|
|
|
|
nlmon_close(nlmon);
|
|
|
|
done:
|
|
l_timeout_remove(timeout);
|
|
|
|
l_main_exit();
|
|
|
|
return exit_status;
|
|
}
|