--- /dev/null
+Description: The mod_if module monitors various aspects of network
+ interfaces for change, including IP, Hardware Address,
+ broadcast, MTU, metric, and promiscuous mode.
+Version: 0.2
+
+diff -ruN osiris-4.1.9-old/src/osirisd/modules/mod_if/Makefile osiris-4.1.9-new/src/osirisd/modules/mod_if/Makefile
+--- osiris-4.1.9-old/src/osirisd/modules/mod_if/Makefile 1970-01-01 01:00:00.000000000 +0100
++++ osiris-4.1.9-new/src/osirisd/modules/mod_if/Makefile 2005-10-07 02:19:17.000000000 +0200
+@@ -0,0 +1,16 @@
++
++include ../Makefile
++
++SRCS=mod_if.c
++OBJS=$(SRCS:.c=.o)
++
++module: ${SRCS} ${OBJS}
++
++INCS=-I../.. -I../../../libosiris -I../../../libfileapi -I../../../..
++
++# meta-rule for compiling any "C" source file.
++$(OBJS): $(SRCS)
++ $(CC) $(DEFS) $(DEFAULT_INCLUDES) ${INCLUDES} ${INCS} $(AM_CPPFLAGS) \
++ $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c $(SRCS)
++ cp $@ ..
++
+diff -ruN osiris-4.1.9-old/src/osirisd/modules/mod_if/README osiris-4.1.9-new/src/osirisd/modules/mod_if/README
+--- osiris-4.1.9-old/src/osirisd/modules/mod_if/README 1970-01-01 01:00:00.000000000 +0100
++++ osiris-4.1.9-new/src/osirisd/modules/mod_if/README 2005-10-07 02:19:17.000000000 +0200
+@@ -0,0 +1,42 @@
++
++Module: mod_if
++Author: Brian Wotring (brian@hostintegrity.com)
++
++
++
++DESCRIPTION:
++
++The mod_if module is designed originally to monitor the promisc flag
++on network interfaces, but quickly turned into being able to monitor
++various aspects of network interfaces including hardware address,
++IP address, broadcast, MTU, and metric.
++
++This module is somewhat different in that each record is an element
++about a network interface as opposed to one record per interface. This
++will make it easier to add more elements to be monitored, easier to
++filter, and easier to understand alerts.
++
++USE:
++
++To use this module, all that is needed is to include it in the Modules
++block of a scan configuration, e.g.:
++
++ <Modules>
++ ...
++ Include mod_if
++ ...
++ </Modules>
++
++
++PARAMETERS:
++
++There are no parameters for this module.
++
++PLATFORMS:
++
++Currently, this module is only implemented for Linux.
++
++NOTES:
++
++
++
+diff -ruN osiris-4.1.9-old/src/osirisd/modules/mod_if/mod_if.c osiris-4.1.9-new/src/osirisd/modules/mod_if/mod_if.c
+--- osiris-4.1.9-old/src/osirisd/modules/mod_if/mod_if.c 1970-01-01 01:00:00.000000000 +0100
++++ osiris-4.1.9-new/src/osirisd/modules/mod_if/mod_if.c 2005-10-07 02:19:17.000000000 +0200
+@@ -0,0 +1,317 @@
++
++/******************************************************************************
++**
++** Copyright (C) 2005 Brian Wotring.
++**
++** This program is free software; you can redistribute it and/or
++** modify it, however, you cannot sell it.
++**
++** 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.
++**
++** You should have received a copy of the license attached to the
++** use of this software. If not, view a current copy of the license
++** file here:
++**
++** http://www.hostintegrity.com/osiris/LICENSE
++**
++******************************************************************************/
++
++/*****************************************************************************
++**
++** File: mod_if.c
++** Date: September 23, 2005
++**
++** Author: Brian Wotring
++** Purpose: platform specific methods for monitoring network devices.
++**
++******************************************************************************/
++
++
++/* CODE USED IN THIS MODULE WAS ORIGINALLY TAKEN FROM:
++*
++* http://mail.nl.linux.org/kernelnewbies/2003-05/msg00090.html
++*/
++
++static const char *MODULE_NAME = "mod_if";
++
++
++#ifndef WIN32
++#include "config.h"
++#endif
++
++#include <stdio.h>
++#include <stdlib.h>
++
++#ifndef WIN32
++#include <unistd.h>
++#include <string.h>
++#include <errno.h>
++
++#include <sys/socket.h>
++#include <sys/types.h>
++#include <net/if.h>
++#endif
++
++#include <sys/ioctl.h>
++#include <net/if_arp.h>
++#include <arpa/inet.h>
++
++
++#include "libosiris.h"
++#include "libfileapi.h"
++#include "rootpriv.h"
++#include "common.h"
++#include "version.h"
++
++#include "scanner.h"
++#include "logging.h"
++
++
++#define inaddrr(x) (*(struct in_addr *) &ifr->x[sizeof sa.sin_port])
++#define IFRSIZE ((int)(size * sizeof (struct ifreq)))
++
++void process_if_unix( SCANNER *scanner )
++{
++ unsigned char*u;
++ int sockfd, size = 1;
++ struct ifreq *ifr;
++ struct ifconf ifc;
++ struct sockaddr_in sa;
++
++ SCAN_RECORD_TEXT_1 record;
++
++ /* Make sure we are able to create sockets */
++
++ if ( (sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) < 0 )
++ {
++ log_error( "mod_if unable to create socket!" );
++ return;
++ }
++
++ ifc.ifc_len = IFRSIZE;
++ ifc.ifc_req = NULL;
++
++ do
++ {
++ ++size;
++
++ /* realloc buffer size until no overflow occurs */
++
++ if ((ifc.ifc_req = realloc(ifc.ifc_req, IFRSIZE)) == NULL )
++ {
++ log_error( "out of memory!!!" );
++ return;
++ }
++
++ ifc.ifc_len = IFRSIZE;
++
++ if (ioctl(sockfd, SIOCGIFCONF, &ifc))
++ {
++ log_error("ioctl failure: SIOCFIFCONF");
++ return;
++ }
++
++ } while (IFRSIZE <= ifc.ifc_len);
++
++ ifr = ifc.ifc_req;
++
++ for (;(char *) ifr < (char *) ifc.ifc_req + ifc.ifc_len; ++ifr)
++ {
++ if (ifr->ifr_addr.sa_data == (ifr+1)->ifr_addr.sa_data)
++ {
++ continue; /* duplicate, skip it */
++ }
++
++ if (ioctl(sockfd, SIOCGIFFLAGS, ifr))
++ {
++ continue; /* failed to get flags, skip it */
++ }
++
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:IP", ifr->ifr_name );
++
++ osi_snprintf( record.data, sizeof( record.data ),
++ "%s", inet_ntoa(inaddrr(ifr_addr.sa_data)));
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++
++ /*
++ * This won't work on HP-UX 10.20 as there's no SIOCGIFHWADDR ioctl. You'll
++ * need to use DLPI or the NETSTAT ioctl on /dev/lan0, etc (and you'll need
++ * to be root to use the NETSTAT ioctl. Also this is deprecated and doesn't
++ * work on 11.00).
++ *
++ * On Digital Unix you can use the SIOCRPHYSADDR ioctl according to an old
++ * utility I have. Also on SGI I think you need to use a raw socket, e.g. s
++ * = socket(PF_RAW, SOCK_RAW, RAWPROTO_SNOOP)
++ *
++ * Dave
++ *
++ * From: David Peter <dave.peter@eu.citrix.com>
++ **/
++
++ if ( ioctl(sockfd, SIOCGIFHWADDR, ifr) == 0 )
++ {
++ /* Select which hardware types to process.
++ **
++ ** See list in system include file included from
++ ** /usr/include/net/if_arp.h (For example, on
++ ** Linux see file /usr/include/linux/if_arp.h to
++ ** get the list.)
++ **/
++
++ switch (ifr->ifr_hwaddr.sa_family)
++ {
++ default:
++ continue;
++
++ case ARPHRD_NETROM:
++ case ARPHRD_ETHER:
++ case ARPHRD_PPP:
++ case ARPHRD_EETHER:
++ case ARPHRD_IEEE802:
++ break;
++ }
++
++ u = (unsigned char *) &ifr->ifr_addr.sa_data;
++
++ /* send record for MAC for this interface */
++
++ if (u[0] + u[1] + u[2] + u[3] + u[4] + u[5])
++ {
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:MAC", ifr->ifr_name );
++
++ osi_snprintf( record.data, sizeof( record.data ),
++ "%2.2x.%2.2x.%2.2x.%2.2x.%2.2x.%2.2x",
++ u[0], u[1], u[2], u[3], u[4], u[5]);
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++ }
++ }
++
++ if ( ioctl(sockfd, SIOCGIFNETMASK, ifr) == 0 &&
++ strcmp("255.255.255.255", inet_ntoa(inaddrr(ifr_addr.sa_data))))
++ {
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:NETMASK", ifr->ifr_name );
++
++ osi_snprintf( record.data, sizeof( record.data ),
++ "%s", inet_ntoa(inaddrr(ifr_addr.sa_data)));
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++ }
++
++ if (ifr->ifr_flags & IFF_BROADCAST)
++ {
++ if ( ioctl(sockfd, SIOCGIFBRDADDR, ifr) == 0 &&
++ strcmp("0.0.0.0", inet_ntoa(inaddrr(ifr_addr.sa_data))))
++ {
++
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:BROADCAST", ifr->ifr_name );
++
++ osi_snprintf( record.data, sizeof( record.data ),
++ "%s",inet_ntoa(inaddrr(ifr_addr.sa_data)));
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++ }
++ }
++
++ /* Added by David Vasil to check for Promiscuous mode */
++
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:PROMISC", ifr->ifr_name );
++
++ if ( ioctl(sockfd, SIOCGIFFLAGS, ifr) == 0 &&
++ ifr->ifr_flags & IFF_PROMISC)
++ {
++ osi_strlcpy( record.data, "ENABLED", sizeof( record.data ) );
++ }
++
++ else
++ {
++ osi_strlcpy( record.data, "DISABLED", sizeof( record.data ) );
++ }
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++
++
++ if ( ioctl(sockfd, SIOCGIFMTU, ifr) == 0 )
++ {
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:MTU", ifr->ifr_name );
++
++ osi_snprintf( record.data, sizeof( record.data ),
++ "%u", ifr->ifr_mtu );
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++ }
++
++ if ( ioctl(sockfd, SIOCGIFMETRIC, ifr) == 0 )
++ {
++ initialize_scan_record( (SCAN_RECORD *)&record,
++ SCAN_RECORD_TYPE_TEXT_1 );
++
++ osi_strlcpy( record.module_name, MODULE_NAME,
++ sizeof( record.module_name ) );
++
++ osi_snprintf( record.name, sizeof( record.name ),
++ "if:%s:METRIC", ifr->ifr_name );
++
++ osi_snprintf( record.data, sizeof( record.data ),
++ "%u", ifr->ifr_metric );
++
++ send_scan_data( scanner, (SCAN_RECORD *)&record );
++ }
++ }
++
++ close(sockfd);
++}
++
++void mod_if( SCANNER *scanner )
++{
++#if defined(SYSTEM_LINUX)
++ process_if_unix( scanner );
++#endif
++
++}
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