can_set_rfmon_test.c [plain text]
#include "varattrs.h"
#ifndef lint
static const char copyright[] _U_ =
"@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <pcap.h>
#include "pcap/funcattrs.h"
static const char *program_name;
static void PCAP_NORETURN error(PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(1,2);
int
main(int argc, char **argv)
{
const char *cp;
pcap_t *pd;
char ebuf[PCAP_ERRBUF_SIZE];
int status;
if ((cp = strrchr(argv[0], '/')) != NULL)
program_name = cp + 1;
else
program_name = argv[0];
if (argc != 2) {
fprintf(stderr, "Usage: %s <device>\n", program_name);
return 2;
}
pd = pcap_create(argv[1], ebuf);
if (pd == NULL)
error("%s", ebuf);
status = pcap_can_set_rfmon(pd);
if (status < 0) {
if (status == PCAP_ERROR)
error("%s: pcap_can_set_rfmon failed: %s", argv[1],
pcap_geterr(pd));
else
error("%s: pcap_can_set_rfmon failed: %s", argv[1],
pcap_statustostr(status));
return 1;
}
printf("%s: Monitor mode %s be set\n", argv[1], status ? "can" : "cannot");
return 0;
}
static void
error(const char *fmt, ...)
{
va_list ap;
(void)fprintf(stderr, "%s: ", program_name);
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
if (*fmt) {
fmt += strlen(fmt);
if (fmt[-1] != '\n')
(void)fputc('\n', stderr);
}
exit(1);
}