diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/promisc_check/Makefile | 13 | ||||
| -rw-r--r-- | src/promisc_check/promisc_check.c | 137 |
2 files changed, 150 insertions, 0 deletions
diff --git a/src/promisc_check/Makefile b/src/promisc_check/Makefile new file mode 100644 index 0000000..b7bb4e9 --- /dev/null +++ b/src/promisc_check/Makefile @@ -0,0 +1,13 @@ +CC=gcc +NAME=promisc_check + +CFLAGS = -ggdb -Wall -Wmissing-prototypes -Wmissing-declarations \ +-Wpointer-arith -m486 -O2 -finline-functions -fkeep-inline-functions + +OBJ=promisc_check.o + +promisc_check: $(OBJ) + $(CC) $(OBJ) -o $(NAME) + +install: + cp $(NAME) /usr/bin diff --git a/src/promisc_check/promisc_check.c b/src/promisc_check/promisc_check.c new file mode 100644 index 0000000..411fe12 --- /dev/null +++ b/src/promisc_check/promisc_check.c @@ -0,0 +1,137 @@ +/***************************************************************************** + * Mandrake Security * + * Written by Vandoorselaere Yoann * + * (C) 1999, Mandrakesoft * + *****************************************************************************/ + +/***** +* +* Copyright (C) 1999 Mandrakesoft +* All Rights Reserved +* +* This file is part of the Mandrake Security program. +* +* This program is free software; you can redistribute it and/or modify +* it under the terms of the GNU General Public License as published by +* the Free Software Foundation; either version 2, or (at your option) +* any later version. +* +* This program 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 General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program; see the file COPYING. If not, write to +* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. +* +*****/ + +/* + * This program will verify each interface on the machine to + * see if one of them is in promisc state. + * + * In this program, buf is an array containing many structure ifreq... + * this allow you to print out : + * ( BUFSIZ / sizeof(struct ifreq )) number of ether card configuration. + */ + +#include <stdio.h> +#include <unistd.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <net/if.h> + +static int quiet_mode = 0; + +void usage(void); +void check_args(int argc, char **argv); +void PrintResult(struct ifreq *ifr); + +int main(int argc, char **argv) +{ + struct ifconf ifc; + char buf[BUFSIZ], *ptr, *ptr_end; + int ret, sock; + + check_args(argc, argv); + + sock = socket(AF_INET, SOCK_DGRAM, 0); + if (sock < 0) { + perror("socket"); + exit(1); + } + + ifc.ifc_len = sizeof(buf); + ifc.ifc_buf = buf; + + ret = ioctl(sock, SIOCGIFCONF, (char *) &ifc); + if (ret < 0) { + perror("ioctl: SIOCGIFCONF"); + exit(1); + } + + ptr_end = buf + ifc.ifc_len; + for (ptr = ifc.ifc_buf; ptr < ptr_end; ptr += sizeof(struct ifreq)) { + struct ifreq *ifr; + + ifr = (struct ifreq *) ptr; + + ret = ioctl(sock, SIOCGIFFLAGS, (char *) ifr); + if (ret < 0) { + perror("ioctl : SIOCGIFFLAGS"); + exit(1); + } + + PrintResult(ifr); + } + + close(sock); + exit(0); +} + +void PrintResult(struct ifreq *ifr) +{ + if (quiet_mode == 0) { + if ((ifr->ifr_flags & IFF_PROMISC) != 0) + printf("%s : Promiscuous mode detected.\n", + ifr->ifr_name); + else + printf("%s : Not in promiscuous mode.\n", + ifr->ifr_name); + } else { + if ((ifr->ifr_flags & IFF_PROMISC) != 0) + printf("%s\n", ifr->ifr_name); + } +} + + + +void check_args(int argc, char **argv) +{ + while (1) { + int c; + + c = getopt(argc, argv, "qh"); + if (c == -1) + break; + + switch (c) { + case 'q': + quiet_mode = 1; + break; + case 'h': + usage(); + exit(0); + default: + exit(1); + } + } +} + +void usage(void) +{ + fprintf(stderr, "Usage:\n"); + fprintf(stderr, + "\t-q Quiet mode ( only report interface name ).\n\n"); +} |