/* * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #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; /* Forwards */ 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)); } printf("%s: Monitor mode %s be set\n", argv[1], status ? "can" : "cannot"); return 0; } /* VARARGS */ 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); /* NOTREACHED */ }