Initial revision

1 files changed, 137 insertions, 0 deletions

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");
+}