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diff --git a/plugins-root/check_icmp.c b/plugins-root/check_icmp.c
index 7636bc7..80fbf61 100644
--- a/plugins-root/check_icmp.c
+++ b/plugins-root/check_icmp.c
@@ -54,6 +54,7 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
54#include "netutils.h" 54#include "netutils.h"
55#include "utils.h" 55#include "utils.h"
56 56
57#include <sys/ioctl.h>
57#include <sys/time.h> 58#include <sys/time.h>
58#include <sys/types.h> 59#include <sys/types.h>
59#include <stdio.h> 60#include <stdio.h>
@@ -66,6 +67,7 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
66#include <ctype.h> 67#include <ctype.h>
67#include <netdb.h> 68#include <netdb.h>
68#include <sys/socket.h> 69#include <sys/socket.h>
70#include <net/if.h>
69#include <netinet/in_systm.h> 71#include <netinet/in_systm.h>
70#include <netinet/in.h> 72#include <netinet/in.h>
71#include <netinet/ip.h> 73#include <netinet/ip.h>
@@ -178,11 +180,13 @@ void print_help (void);
178void print_usage (void); 180void print_usage (void);
179static u_int get_timevar(const char *); 181static u_int get_timevar(const char *);
180static u_int get_timevaldiff(struct timeval *, struct timeval *); 182static u_int get_timevaldiff(struct timeval *, struct timeval *);
183static in_addr_t get_ip_address(const char *);
181static int wait_for_reply(int, u_int); 184static int wait_for_reply(int, u_int);
182static int recvfrom_wto(int, char *, unsigned int, struct sockaddr *, u_int *); 185static int recvfrom_wto(int, char *, unsigned int, struct sockaddr *, u_int *);
183static int send_icmp_ping(int, struct rta_host *); 186static int send_icmp_ping(int, struct rta_host *);
184static int get_threshold(char *str, threshold *th); 187static int get_threshold(char *str, threshold *th);
185static void run_checks(void); 188static void run_checks(void);
189static void set_source_ip(char *);
186static int add_target(char *); 190static int add_target(char *);
187static int add_target_ip(char *, struct in_addr *); 191static int add_target_ip(char *, struct in_addr *);
188static int handle_random_icmp(struct icmp *, struct sockaddr_in *); 192static int handle_random_icmp(struct icmp *, struct sockaddr_in *);
@@ -446,7 +450,7 @@ main(int argc, char **argv)
446 450
447 /* parse the arguments */ 451 /* parse the arguments */
448 for(i = 1; i < argc; i++) { 452 for(i = 1; i < argc; i++) {
449 while((arg = getopt(argc, argv, "vhVw:c:n:p:t:H:i:b:I:l:m:")) != EOF) { 453 while((arg = getopt(argc, argv, "vhVw:c:n:p:t:H:s:i:b:I:l:m:")) != EOF) {
450 switch(arg) { 454 switch(arg) {
451 case 'v': 455 case 'v':
452 debug++; 456 debug++;
@@ -489,6 +493,9 @@ main(int argc, char **argv)
489 crit_down = (unsigned char)strtoul(ptr + 1, NULL, 0); 493 crit_down = (unsigned char)strtoul(ptr + 1, NULL, 0);
490 } 494 }
491 break; 495 break;
496 case 's': /* specify source IP address */
497 set_source_ip(optarg);
498 break;
492 case 'V': /* version */ 499 case 'V': /* version */
493 /*print_revision (progname, revision);*/ /* FIXME: Why? */ 500 /*print_revision (progname, revision);*/ /* FIXME: Why? */
494 exit (STATE_OK); 501 exit (STATE_OK);
@@ -1109,6 +1116,38 @@ add_target(char *arg)
1109 1116
1110 return 0; 1117 return 0;
1111} 1118}
1119
1120static void
1121set_source_ip(char *arg)
1122{
1123 struct sockaddr_in src;
1124
1125 memset(&src, 0, sizeof(src));
1126 src.sin_family = AF_INET;
1127 if((src.sin_addr.s_addr = inet_addr(arg)) == INADDR_NONE)
1128 src.sin_addr.s_addr = get_ip_address(arg);
1129 if(bind(icmp_sock, (struct sockaddr *)&src, sizeof(src)) == -1)
1130 crash("Cannot bind to IP address %s", arg);
1131}
1132
1133/* TODO: Move this to netutils.c and also change check_dhcp to use that. */
1134static in_addr_t
1135get_ip_address(const char *ifname)
1136{
1137#if defined(SIOCGIFADDR)
1138 struct ifreq ifr;
1139
1140 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
1141 ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0';
1142 if(ioctl(icmp_sock, SIOCGIFADDR, &ifr) == -1)
1143 crash("Cannot determine IP address of interface %s", ifname);
1144 return ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
1145#else
1146 errno = 0;
1147 crash("Cannot get interface IP address on this platform.");
1148#endif
1149}
1150
1112/* 1151/*
1113 * u = micro 1152 * u = micro
1114 * m = milli 1153 * m = milli
@@ -1231,6 +1270,8 @@ print_help(void)
1231 printf (" %s\n", "-c"); 1270 printf (" %s\n", "-c");
1232 printf (" %s", _("critical threshold (currently ")); 1271 printf (" %s", _("critical threshold (currently "));
1233 printf ("%0.3fms,%u%%)\n", (float)crit.rta, crit.pl); 1272 printf ("%0.3fms,%u%%)\n", (float)crit.rta, crit.pl);
1273 printf (" %s\n", "-s");
1274 printf (" %s\n", _("specify a source IP address or device name"));
1234 printf (" %s\n", "-n"); 1275 printf (" %s\n", "-n");
1235 printf (" %s", _("number of packets to send (currently ")); 1276 printf (" %s", _("number of packets to send (currently "));
1236 printf ("%u)\n",packets); 1277 printf ("%u)\n",packets);