/*
* Wireless Tools
*
* Jean II - HPLB '99 - HPL 99->04
*
* This tool can manipulate the spy list : add addresses and display stat
* You need to link this code against "iwlib.c" and "-lm".
*
* This file is released under the GPL license.
* Copyright (c) 1997-2004 Jean Tourrilhes <jt@hpl.hp.com>
*/
#include "iwlib.h" /* Header */
/************************* DISPLAY ROUTINES **************************/
/*------------------------------------------------------------------*/
/*
* Display the spy list of addresses and the associated stats
*/
static int
print_spy_info(int skfd,
char * ifname,
char * args[],
int count)
{
struct iwreq wrq;
char buffer[(sizeof(struct iw_quality) +
sizeof(struct sockaddr)) * IW_MAX_SPY];
char temp[128];
struct sockaddr * hwa;
struct iw_quality * qual;
iwrange range;
int has_range = 0;
int n;
int i;
/* Avoid "Unused parameter" warning */
args = args; count = count;
/* Collect stats */
wrq.u.data.pointer = (caddr_t) buffer;
wrq.u.data.length = IW_MAX_SPY;
wrq.u.data.flags = 0;
if(iw_get_ext(skfd, ifname, SIOCGIWSPY, &wrq) < 0)
{
fprintf(stderr, "%-8.16s Interface doesn't support wireless statistic collection\n\n", ifname);
return(-1);
}
/* Number of addresses */
n = wrq.u.data.length;
/* Check if we have valid mac address type */
if(iw_check_mac_addr_type(skfd, ifname) < 0)
{
fprintf(stderr, "%-8.16s Interface doesn't support MAC addresses\n\n", ifname);
return(-2);
}
/* Get range info if we can */
if(iw_get_range_info(skfd, ifname, &(range)) >= 0)
has_range = 1;
/* Display it */
if(n == 0)
printf("%-8.16s No statistics to collect\n", ifname);
else
printf("%-8.16s Statistics collected:\n", ifname);
/* The two lists */
hwa = (struct sockaddr *) buffer;
qual = (struct iw_quality *) (buffer + (sizeof(struct sockaddr) * n));
for(i = 0; i < n; i++)
{
/* Print stats for each address */
printf(" %s : ", iw_saether_ntop(&hwa[i], temp));
iw_print_stats(temp, sizeof(temp), &qual[i], &range, has_range);
printf("%s\n", temp);
}
if((n > 0) && (has_range) && (range.we_version_compiled > 11))
{
iwstats stats;
/* Get /proc/net/wireless */
if(iw_get_stats(skfd, ifname, &stats, &range, has_range) >= 0)
{
iw_print_stats(temp, sizeof(temp), &stats.qual, &range, has_range);
printf(" Link/Cell/AP : %s\n", temp);
/* Display the static data */
iw_print_stats(temp, sizeof(temp),
&range.avg_qual, &range, has_range);
printf(" Typical/Reference : %s\n", temp);
}
}
printf("\n");
return(0);
}
/*------------------------------------------------------------------*/
/*
* Get spy thresholds from the driver and display
*/
static int
get_spy_threshold(int skfd, /* The socket */
char * ifname, /* Dev name */
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
struct iw_thrspy threshold;
iwrange range;
int has_range = 0;
/* Avoid "Unused parameter" warning */
args = args; count = count;
/* Time to send thresholds to the driver */
wrq.u.data.pointer = (caddr_t) &threshold;
wrq.u.data.length = 1;
wrq.u.data.flags = 0;
if(iw_set_ext(skfd, ifname, SIOCGIWTHRSPY, &wrq) < 0)
{
fprintf(stderr, "Interface doesn't support thresholds...\n");
fprintf(stderr, "SIOCGIWTHRSPY: %s\n", strerror(errno));
return(-1);
}
/* Get range info if we can */
if(iw_get_range_info(skfd, ifname, &(range)) >= 0)
has_range = 1;
/* Display thresholds */
if((has_range) && (threshold.low.level))
{
/* If the statistics are in dBm */
if(threshold.low.level > range.max_qual.level)
{
/* Statistics are in dBm (absolute power measurement) */
printf("%-8.16s Low threshold:%d dBm High threshold:%d dBm\n\n",
ifname,
threshold.low.level - 0x100, threshold.high.level - 0x100);
}
else
{
/* Statistics are relative values (0 -> max) */
printf("%-8.16s Low threshold:%d/%d High threshold:%d/%d\n\n",
ifname,
threshold.low.level, range.max_qual.level,
threshold.high.level, range.max_qual.level);
}
}
else
{
/* We can't read the range, so we don't know... */
printf("%-8.16s Low threshold:%d High threshold:%d\n\n",
ifname,
threshold.low.level, threshold.high.level);
}
return(0);
}
/************************* SETTING ROUTINES **************************/
/*------------------------------------------------------------------*/
/*
* Set list of addresses specified on command line in the driver.
*/
static int
set_spy_info(int skfd, /* The socket */
char * ifname, /* Dev name */
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
int i;
int nbr; /* Number of valid addresses */
struct sockaddr hw_address[IW_MAX_SPY];
/* Read command line */
i = 0; /* first arg to read */
nbr = 0; /* Number of args read so far */
/* "off" : disable functionality (set 0 addresses) */
if(!strcmp(args[0], "off"))
i = 1; /* skip the "off" */
else
{
/* "+" : add all addresses already in the driver */
if(!strcmp(args[0], "+"))
{
char buffer[(sizeof(struct iw_quality) +
sizeof(struct sockaddr)) * IW_MAX_SPY];
/* Check if we have valid mac address type */
if(iw_check_mac_addr_type(skfd, ifname) < 0)
{
fprintf(stderr, "%-8.16s Interface doesn't support MAC addresses\n", ifname);
return(-1);
}
wrq.u.data.pointer = (caddr_t) buffer;
wrq.u.data.length = IW_MAX_SPY;
wrq.u.data.flags = 0;
if(iw_get_ext(skfd, ifname, SIOCGIWSPY, &wrq) < 0)
{
fprintf(stderr, "Interface doesn't accept reading addresses...\n");
fprintf(stderr, "SIOCGIWSPY: %s\n", strerror(errno));
return(-1);
}
/* Copy old addresses */
nbr = wrq.u.data.length;
memcpy(hw_address, buffer, nbr * sizeof(struct sockaddr));
i = 1; /* skip the "+" */
}
/* Read other args on command line */
while((i < count) && (nbr < IW_MAX_SPY))
{
/* Get the address and check if the interface supports it */
if(iw_in_addr(skfd, ifname, args[i++], &(hw_address[nbr])) < 0)
continue;
nbr++;
}
/* Check the number of addresses */
if(nbr == 0)
{
fprintf(stderr, "No valid addresses found : exiting...\n");
return(-1);
}
}
/* Check if there is some remaining arguments */
if(i < count)
{
fprintf(stderr, "Got only the first %d arguments, remaining discarded\n", i);
}
/* Time to do send addresses to the driver */
wrq.u.data.pointer = (caddr_t) hw_address;
wrq.u.data.length = nbr;
wrq.u.data.flags = 0;
if(iw_set_ext(skfd, ifname, SIOCSIWSPY, &wrq) < 0)
{
fprintf(stderr, "Interface doesn't accept addresses...\n");
fprintf(stderr, "SIOCSIWSPY: %s\n", strerror(errno));
return(-1);
}
return(0);
}
/*------------------------------------------------------------------*/
/*
* Set spy thresholds in the driver from command line
*/
static int
set_spy_threshold(int skfd, /* The socket */
char * ifname, /* Dev name */
char * args[], /* Command line args */
int count) /* Args count */
{
struct iwreq wrq;
struct iw_thrspy threshold;
int low_thr;
int high_thr;
/* Init */
memset(&threshold, '\0', sizeof(threshold));
/* "off" : disable functionality (set 0 addresses) */
if(!strcmp(args[0], "off"))
{
/* Just send null threshold, will disable it */
}
else
{
/* Try to get our threshold */
if(count < 2)
{
fprintf(stderr, "%-8.16s Need two threshold values\n", ifname);
return(-1);
}
if((sscanf(args[0], "%i", &low_thr) != 1) ||
(sscanf(args[1], "%i", &high_thr) != 1))
{
fprintf(stderr, "%-8.16s Invalid threshold values\n", ifname);
return(-1);
}
/* Basic sanity check */
if(high_thr < low_thr)
{
fprintf(stderr, "%-8.16s Inverted threshold range\n", ifname);
return(-1);
}
/* Copy thresholds */
threshold.low.level = low_thr;
threshold.low.updated = 0x2;
threshold.high.level = high_thr;
threshold.high.updated = 0x2;
}
/* Time to send thresholds to the driver */
wrq.u.data.pointer = (caddr_t) &threshold;
wrq.u.data.length = 1;
wrq.u.data.flags = 0;
if(iw_set_ext(skfd, ifname, SIOCSIWTHRSPY, &wrq) < 0)
{
fprintf(stderr, "Interface doesn't accept thresholds...\n");
fprintf(stderr, "SIOCSIWTHRSPY: %s\n", strerror(errno));
return(-1);
}
return(0);
}
/******************************* MAIN ********************************/
/*------------------------------------------------------------------*/
/*
* The main !
*/
int
main(int argc,
char ** argv)
{
int skfd; /* generic raw socket desc. */
int goterr = 0;
/* Create a channel to the NET kernel. */
if((skfd = iw_sockets_open()) < 0)
{
perror("socket");
return(-1);
}
/* No argument : show the list of all device + info */
if(argc == 1)
iw_enum_devices(skfd, &print_spy_info, NULL, 0);
else
/* Special cases take one... */
/* Help */
if((!strcmp(argv[1], "-h")) || (!strcmp(argv[1], "--help")))
fprintf(stderr, "Usage: iwspy interface [+] [MAC address] [IP address]\n");
else
/* Version */
if (!strcmp(argv[1], "-v") || !strcmp(argv[1], "--version"))
goterr = iw_print_version_info("iwspy");
else
/* The device name must be the first argument */
/* Name only : show spy list for that device only */
if(argc == 2)
print_spy_info(skfd, argv[1], NULL, 0);
else
/* Special commands */
if(!strcmp(argv[2], "setthr"))
goterr = set_spy_threshold(skfd, argv[1], argv + 3, argc - 3);
else
if(!strcmp(argv[2], "getthr"))
goterr = get_spy_threshold(skfd, argv[1], argv + 3, argc - 3);
else
/* Otherwise, it's a list of address to set in the spy list */
goterr = set_spy_info(skfd, argv[1], argv + 2, argc - 2);
/* Close the socket. */
iw_sockets_close(skfd);
return(goterr);
}