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raw | patch | inline | side by side (parent: fb1936c)
raw | patch | inline | side by side (parent: fb1936c)
| author | Ton Voon <tonvoon@users.sourceforge.net> | |
| Wed, 21 Sep 2005 10:09:09 +0000 (10:09 +0000) | ||
| committer | Ton Voon <tonvoon@users.sourceforge.net> | |
| Wed, 21 Sep 2005 10:09:09 +0000 (10:09 +0000) |
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1234 f882894a-f735-0410-b71e-b25c423dba1c
| plugins/check_dhcp.c | [deleted file] | patch | blob | history |
| plugins/check_icmp.c | [deleted file] | patch | blob | history |
diff --git a/plugins/check_dhcp.c b/plugins/check_dhcp.c
--- a/plugins/check_dhcp.c
+++ /dev/null
@@ -1,1261 +0,0 @@
-/******************************************************************************
-*
-* CHECK_DHCP.C
-*
-* Program: DHCP plugin for Nagios
-* License: GPL
-* Copyright (c) 2001-2004 Ethan Galstad (nagios@nagios.org)
-*
-* License Information:
-*
-* 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 of the License, 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; if not, write to the Free Software
-* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* $Id$
-*
-*****************************************************************************/
-
-const char *progname = "check_dhcp";
-const char *revision = "$Revision$";
-const char *copyright = "2001-2004";
-const char *email = "nagiosplug-devel@lists.sourceforge.net";
-
-#include "common.h"
-#include "netutils.h"
-#include "utils.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <net/if.h>
-#include <arpa/inet.h>
-
-#if defined( __linux__ )
-
-#include <linux/if_ether.h>
-#include <features.h>
-
-#elif defined (__bsd__)
-
-#include <netinet/if_ether.h>
-#include <sys/sysctl.h>
-#include <net/if_dl.h>
-
-#elif defined(__sun__) || defined(__solaris__) || defined(__hpux__)
-
-#define INSAP 22
-#define OUTSAP 24
-
-#include <signal.h>
-#include <ctype.h>
-#include <sys/stropts.h>
-#include <sys/poll.h>
-#include <sys/dlpi.h>
-
-#define bcopy(source, destination, length) memcpy(destination, source, length)
-
-#define AREA_SZ 5000 /* buffer length in bytes */
-static u_long ctl_area[AREA_SZ];
-static u_long dat_area[AREA_SZ];
-static struct strbuf ctl = {AREA_SZ, 0, (char *)ctl_area};
-static struct strbuf dat = {AREA_SZ, 0, (char *)dat_area};
-
-#define GOT_CTRL 1
-#define GOT_DATA 2
-#define GOT_BOTH 3
-#define GOT_INTR 4
-#define GOT_ERR 128
-
-#define u_int8_t uint8_t
-#define u_int16_t uint16_t
-#define u_int32_t uint32_t
-
-static int get_msg(int);
-static int check_ctrl(int);
-static int put_ctrl(int, int, int);
-static int put_both(int, int, int, int);
-static int dl_open(const char *, int, int *);
-static int dl_bind(int, int, u_char *);
-long mac_addr_dlpi( const char *, int, u_char *);
-
-#endif
-
-#define HAVE_GETOPT_H
-
-
-/**** Common definitions ****/
-
-#define STATE_OK 0
-#define STATE_WARNING 1
-#define STATE_CRITICAL 2
-#define STATE_UNKNOWN -1
-
-#define OK 0
-#define ERROR -1
-
-#define FALSE 0
-#define TRUE 1
-
-
-/**** DHCP definitions ****/
-
-#define MAX_DHCP_CHADDR_LENGTH 16
-#define MAX_DHCP_SNAME_LENGTH 64
-#define MAX_DHCP_FILE_LENGTH 128
-#define MAX_DHCP_OPTIONS_LENGTH 312
-
-
-typedef struct dhcp_packet_struct{
- u_int8_t op; /* packet type */
- u_int8_t htype; /* type of hardware address for this machine (Ethernet, etc) */
- u_int8_t hlen; /* length of hardware address (of this machine) */
- u_int8_t hops; /* hops */
- u_int32_t xid; /* random transaction id number - chosen by this machine */
- u_int16_t secs; /* seconds used in timing */
- u_int16_t flags; /* flags */
- struct in_addr ciaddr; /* IP address of this machine (if we already have one) */
- struct in_addr yiaddr; /* IP address of this machine (offered by the DHCP server) */
- struct in_addr siaddr; /* IP address of DHCP server */
- struct in_addr giaddr; /* IP address of DHCP relay */
- unsigned char chaddr [MAX_DHCP_CHADDR_LENGTH]; /* hardware address of this machine */
- char sname [MAX_DHCP_SNAME_LENGTH]; /* name of DHCP server */
- char file [MAX_DHCP_FILE_LENGTH]; /* boot file name (used for diskless booting?) */
- char options[MAX_DHCP_OPTIONS_LENGTH]; /* options */
- }dhcp_packet;
-
-
-typedef struct dhcp_offer_struct{
- struct in_addr server_address; /* address of DHCP server that sent this offer */
- struct in_addr offered_address; /* the IP address that was offered to us */
- u_int32_t lease_time; /* lease time in seconds */
- u_int32_t renewal_time; /* renewal time in seconds */
- u_int32_t rebinding_time; /* rebinding time in seconds */
- struct dhcp_offer_struct *next;
- }dhcp_offer;
-
-
-typedef struct requested_server_struct{
- struct in_addr server_address;
- struct requested_server_struct *next;
- }requested_server;
-
-
-#define BOOTREQUEST 1
-#define BOOTREPLY 2
-
-#define DHCPDISCOVER 1
-#define DHCPOFFER 2
-#define DHCPREQUEST 3
-#define DHCPDECLINE 4
-#define DHCPACK 5
-#define DHCPNACK 6
-#define DHCPRELEASE 7
-
-#define DHCP_OPTION_MESSAGE_TYPE 53
-#define DHCP_OPTION_HOST_NAME 12
-#define DHCP_OPTION_BROADCAST_ADDRESS 28
-#define DHCP_OPTION_REQUESTED_ADDRESS 50
-#define DHCP_OPTION_LEASE_TIME 51
-#define DHCP_OPTION_RENEWAL_TIME 58
-#define DHCP_OPTION_REBINDING_TIME 59
-
-#define DHCP_INFINITE_TIME 0xFFFFFFFF
-
-#define DHCP_BROADCAST_FLAG 32768
-
-#define DHCP_SERVER_PORT 67
-#define DHCP_CLIENT_PORT 68
-
-#define ETHERNET_HARDWARE_ADDRESS 1 /* used in htype field of dhcp packet */
-#define ETHERNET_HARDWARE_ADDRESS_LENGTH 6 /* length of Ethernet hardware addresses */
-
-unsigned char client_hardware_address[MAX_DHCP_CHADDR_LENGTH]="";
-
-char network_interface_name[8]="eth0";
-
-u_int32_t packet_xid=0;
-
-u_int32_t dhcp_lease_time=0;
-u_int32_t dhcp_renewal_time=0;
-u_int32_t dhcp_rebinding_time=0;
-
-int dhcpoffer_timeout=2;
-
-dhcp_offer *dhcp_offer_list=NULL;
-requested_server *requested_server_list=NULL;
-
-int valid_responses=0; /* number of valid DHCPOFFERs we received */
-int requested_servers=0;
-int requested_responses=0;
-
-int request_specific_address=FALSE;
-int received_requested_address=FALSE;
-int verbose=0;
-struct in_addr requested_address;
-
-
-int process_arguments(int, char **);
-int call_getopt(int, char **);
-int validate_arguments(void);
-void print_usage(void);
-void print_help(void);
-
-int get_hardware_address(int,char *);
-
-int send_dhcp_discover(int);
-int get_dhcp_offer(int);
-
-int get_results(void);
-
-int add_dhcp_offer(struct in_addr,dhcp_packet *);
-int free_dhcp_offer_list(void);
-int free_requested_server_list(void);
-
-int create_dhcp_socket(void);
-int close_dhcp_socket(int);
-int send_dhcp_packet(void *,int,int,struct sockaddr_in *);
-int receive_dhcp_packet(void *,int,int,int,struct sockaddr_in *);
-
-
-
-int main(int argc, char **argv){
- int dhcp_socket;
- int result;
-
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- if(process_arguments(argc,argv)!=OK){
- usage4 (_("Could not parse arguments"));
- }
-
- /* create socket for DHCP communications */
- dhcp_socket=create_dhcp_socket();
-
- /* get hardware address of client machine */
- get_hardware_address(dhcp_socket,network_interface_name);
-
- /* send DHCPDISCOVER packet */
- send_dhcp_discover(dhcp_socket);
-
- /* wait for a DHCPOFFER packet */
- get_dhcp_offer(dhcp_socket);
-
- /* close socket we created */
- close_dhcp_socket(dhcp_socket);
-
- /* determine state/plugin output to return */
- result=get_results();
-
- /* free allocated memory */
- free_dhcp_offer_list();
- free_requested_server_list();
-
- return result;
- }
-
-
-
-/* determines hardware address on client machine */
-int get_hardware_address(int sock,char *interface_name){
-
- int i;
-
-#if defined(__linux__)
- struct ifreq ifr;
-
- strncpy((char *)&ifr.ifr_name,interface_name,sizeof(ifr.ifr_name));
-
- /* try and grab hardware address of requested interface */
- if(ioctl(sock,SIOCGIFHWADDR,&ifr)<0){
- printf(_("Error: Could not get hardware address of interface '%s'\n"),interface_name);
- exit(STATE_UNKNOWN);
- }
-
- memcpy(&client_hardware_address[0],&ifr.ifr_hwaddr.sa_data,6);
-
-#elif defined(__bsd__)
- /* King 2004 see ACKNOWLEDGEMENTS */
-
- int mib[6], len;
- char *buf;
- unsigned char *ptr;
- struct if_msghdr *ifm;
- struct sockaddr_dl *sdl;
-
- mib[0] = CTL_NET;
- mib[1] = AF_ROUTE;
- mib[2] = 0;
- mib[3] = AF_LINK;
- mib[4] = NET_RT_IFLIST;
-
- if ((mib[5] = if_nametoindex(interface_name)) == 0) {
- printf(_("Error: if_nametoindex error - %s.\n"), strerror(errno));
- exit(STATE_UNKNOWN);
- }
-
- if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
- printf(_("Error: Couldn't get hardware address from %s. sysctl 1 error - %s.\n"), interface_name, strerror(errno));
- exit(STATE_UNKNOWN);
- }
-
- if ((buf = malloc(len)) == NULL) {
- printf(_("Error: Couldn't get hardware address from interface %s. malloc error - %s.\n"), interface_name, strerror(errno));
- exit(4);
- }
-
- if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
- printf(_("Error: Couldn't get hardware address from %s. sysctl 2 error - %s.\n"), interface_name, strerror(errno));
- exit(STATE_UNKNOWN);
- }
-
- ifm = (struct if_msghdr *)buf;
- sdl = (struct sockaddr_dl *)(ifm + 1);
- ptr = (unsigned char *)LLADDR(sdl);
- memcpy(&client_hardware_address[0], ptr, 6) ;
- /* King 2004 */
-
-#elif defined(__sun__) || defined(__solaris__)
-
- /* Kompf 2000-2003 see ACKNOWLEDGEMENTS */
- long stat;
- char dev[20] = "/dev/";
- char *p;
- int unit;
-
- for (p = interface_name; *p && isalpha(*p); p++)
- /* no-op */ ;
- if ( p != '\0' ) {
- unit = atoi(p) ;
- *p = '\0' ;
- strncat(dev, interface_name, 6) ;
- } else {
- printf(_("Error: can't find unit number in interface_name (%s) - expecting TypeNumber eg lnc0.\n"), interface_name);
- exit(STATE_UNKNOWN);
- }
- stat = mac_addr_dlpi(dev, unit, client_hardware_address);
- if (stat != 0) {
- printf(_("Error: can't read MAC address from DLPI streams interface for device %s unit %d.\n"), dev, unit);
- exit(STATE_UNKNOWN);
- }
-
-#elif defined(__hpux__)
-
- long stat;
- char dev[20] = "/dev/dlpi" ;
- int unit = 0;
-
- stat = mac_addr_dlpi(dev, unit, client_hardware_address);
- if (stat != 0) {
- printf(_("Error: can't read MAC address from DLPI streams interface for device %s unit %d.\n"), dev, unit);
- exit(STATE_UNKNOWN);
- }
- /* Kompf 2000-2003 */
-
-#else
- printf(_("Error: can't get MAC address for this architecture.\n"));
- exit(STATE_UNKNOWN);
-#endif
-
- if (verbose) {
- printf(_("Hardware address: "));
- for (i=0; i<6; ++i)
- printf("%2.2x", client_hardware_address[i]);
- printf( "\n");
- }
-
- return OK;
- }
-
-
-/* sends a DHCPDISCOVER broadcast message in an attempt to find DHCP servers */
-int send_dhcp_discover(int sock){
- dhcp_packet discover_packet;
- struct sockaddr_in sockaddr_broadcast;
-
-
- /* clear the packet data structure */
- bzero(&discover_packet,sizeof(discover_packet));
-
-
- /* boot request flag (backward compatible with BOOTP servers) */
- discover_packet.op=BOOTREQUEST;
-
- /* hardware address type */
- discover_packet.htype=ETHERNET_HARDWARE_ADDRESS;
-
- /* length of our hardware address */
- discover_packet.hlen=ETHERNET_HARDWARE_ADDRESS_LENGTH;
-
- discover_packet.hops=0;
-
- /* transaction id is supposed to be random */
- srand(time(NULL));
- packet_xid=random();
- discover_packet.xid=htonl(packet_xid);
-
- /**** WHAT THE HECK IS UP WITH THIS?!? IF I DON'T MAKE THIS CALL, ONLY ONE SERVER RESPONSE IS PROCESSED!!!! ****/
- /* downright bizzarre... */
- ntohl(discover_packet.xid);
-
- /*discover_packet.secs=htons(65535);*/
- discover_packet.secs=0xFF;
-
- /* tell server it should broadcast its response */
- discover_packet.flags=htons(DHCP_BROADCAST_FLAG);
-
- /* our hardware address */
- memcpy(discover_packet.chaddr,client_hardware_address,ETHERNET_HARDWARE_ADDRESS_LENGTH);
-
- /* first four bytes of options field is magic cookie (as per RFC 2132) */
- discover_packet.options[0]='\x63';
- discover_packet.options[1]='\x82';
- discover_packet.options[2]='\x53';
- discover_packet.options[3]='\x63';
-
- /* DHCP message type is embedded in options field */
- discover_packet.options[4]=DHCP_OPTION_MESSAGE_TYPE; /* DHCP message type option identifier */
- discover_packet.options[5]='\x01'; /* DHCP message option length in bytes */
- discover_packet.options[6]=DHCPDISCOVER;
-
- /* the IP address we're requesting */
- if(request_specific_address==TRUE){
- discover_packet.options[7]=DHCP_OPTION_REQUESTED_ADDRESS;
- discover_packet.options[8]='\x04';
- memcpy(&discover_packet.options[9],&requested_address,sizeof(requested_address));
- }
-
- /* send the DHCPDISCOVER packet to broadcast address */
- sockaddr_broadcast.sin_family=AF_INET;
- sockaddr_broadcast.sin_port=htons(DHCP_SERVER_PORT);
- sockaddr_broadcast.sin_addr.s_addr=INADDR_BROADCAST;
- bzero(&sockaddr_broadcast.sin_zero,sizeof(sockaddr_broadcast.sin_zero));
-
-
- if (verbose) {
- printf(_("DHCPDISCOVER to %s port %d\n"),inet_ntoa(sockaddr_broadcast.sin_addr),ntohs(sockaddr_broadcast.sin_port));
- printf("DHCPDISCOVER XID: %lu (0x%X)\n",ntohl(discover_packet.xid),ntohl(discover_packet.xid));
- printf("DHCDISCOVER ciaddr: %s\n",inet_ntoa(discover_packet.ciaddr));
- printf("DHCDISCOVER yiaddr: %s\n",inet_ntoa(discover_packet.yiaddr));
- printf("DHCDISCOVER siaddr: %s\n",inet_ntoa(discover_packet.siaddr));
- printf("DHCDISCOVER giaddr: %s\n",inet_ntoa(discover_packet.giaddr));
- }
-
- /* send the DHCPDISCOVER packet out */
- send_dhcp_packet(&discover_packet,sizeof(discover_packet),sock,&sockaddr_broadcast);
-
- if (verbose)
- printf("\n\n");
-
- return OK;
- }
-
-
-
-
-/* waits for a DHCPOFFER message from one or more DHCP servers */
-int get_dhcp_offer(int sock){
- dhcp_packet offer_packet;
- struct sockaddr_in source;
- int result=OK;
- int timeout=1;
- int responses=0;
- int x;
- time_t start_time;
- time_t current_time;
-
- time(&start_time);
-
- /* receive as many responses as we can */
- for(responses=0,valid_responses=0;;){
-
- time(¤t_time);
- if((current_time-start_time)>=dhcpoffer_timeout)
- break;
-
- if (verbose)
- printf("\n\n");
-
- bzero(&source,sizeof(source));
- bzero(&offer_packet,sizeof(offer_packet));
-
- result=OK;
- result=receive_dhcp_packet(&offer_packet,sizeof(offer_packet),sock,dhcpoffer_timeout,&source);
-
- if(result!=OK){
- if (verbose)
- printf(_("Result=ERROR\n"));
-
- continue;
- }
- else{
- if (verbose)
- printf(_("Result=OK\n"));
-
- responses++;
- }
-
- if (verbose) {
- printf(_("DHCPOFFER from IP address %s\n"),inet_ntoa(source.sin_addr));
- printf("DHCPOFFER XID: %lu (0x%X)\n",ntohl(offer_packet.xid),ntohl(offer_packet.xid));
- }
-
- /* check packet xid to see if its the same as the one we used in the discover packet */
- if(ntohl(offer_packet.xid)!=packet_xid){
- if (verbose)
- printf(_("DHCPOFFER XID (%lu) did not match DHCPDISCOVER XID (%lu) - ignoring packet\n"),ntohl(offer_packet.xid),packet_xid);
-
- continue;
- }
-
- /* check hardware address */
- result=OK;
- if (verbose)
- printf("DHCPOFFER chaddr: ");
-
- for(x=0;x<ETHERNET_HARDWARE_ADDRESS_LENGTH;x++){
- if (verbose)
- printf("%02X",(unsigned char)offer_packet.chaddr[x]);
-
- if(offer_packet.chaddr[x]!=client_hardware_address[x])
- result=ERROR;
- }
- if (verbose)
- printf("\n");
-
- if(result==ERROR){
- if (verbose)
- printf(_("DHCPOFFER hardware address did not match our own - ignoring packet\n"));
-
- continue;
- }
-
- if (verbose) {
- printf("DHCPOFFER ciaddr: %s\n",inet_ntoa(offer_packet.ciaddr));
- printf("DHCPOFFER yiaddr: %s\n",inet_ntoa(offer_packet.yiaddr));
- printf("DHCPOFFER siaddr: %s\n",inet_ntoa(offer_packet.siaddr));
- printf("DHCPOFFER giaddr: %s\n",inet_ntoa(offer_packet.giaddr));
- }
-
- add_dhcp_offer(source.sin_addr,&offer_packet);
-
- valid_responses++;
- }
-
- if (verbose) {
- printf(_("Total responses seen on the wire: %d\n"),responses);
- printf(_("Valid responses for this machine: %d\n"),valid_responses);
- }
-
- return OK;
- }
-
-
-
-/* sends a DHCP packet */
-int send_dhcp_packet(void *buffer, int buffer_size, int sock, struct sockaddr_in *dest){
- struct sockaddr_in myname;
- int result;
-
- result=sendto(sock,(char *)buffer,buffer_size,0,(struct sockaddr *)dest,sizeof(*dest));
-
- if (verbose)
- printf(_("send_dhcp_packet result: %d\n"),result);
-
- if(result<0)
- return ERROR;
-
- return OK;
- }
-
-
-
-/* receives a DHCP packet */
-int receive_dhcp_packet(void *buffer, int buffer_size, int sock, int timeout, struct sockaddr_in *address){
- struct timeval tv;
- fd_set readfds;
- int recv_result;
- socklen_t address_size;
- struct sockaddr_in source_address;
-
-
- /* wait for data to arrive (up time timeout) */
- tv.tv_sec=timeout;
- tv.tv_usec=0;
- FD_ZERO(&readfds);
- FD_SET(sock,&readfds);
- select(sock+1,&readfds,NULL,NULL,&tv);
-
- /* make sure some data has arrived */
- if(!FD_ISSET(sock,&readfds)){
- if (verbose)
- printf(_("No (more) data received\n"));
- return ERROR;
- }
-
- else{
-
- /* why do we need to peek first? i don't know, its a hack. without it, the source address of the first packet received was
- not being interpreted correctly. sigh... */
- bzero(&source_address,sizeof(source_address));
- address_size=sizeof(source_address);
- recv_result=recvfrom(sock,(char *)buffer,buffer_size,MSG_PEEK,(struct sockaddr *)&source_address,&address_size);
- if (verbose)
- printf("recv_result_1: %d\n",recv_result);
- recv_result=recvfrom(sock,(char *)buffer,buffer_size,0,(struct sockaddr *)&source_address,&address_size);
- if (verbose)
- printf("recv_result_2: %d\n",recv_result);
-
- if(recv_result==-1){
- if (verbose) {
- printf(_("recvfrom() failed, "));
- printf("errno: (%d) -> %s\n",errno,strerror(errno));
- }
- return ERROR;
- }
- else{
- if (verbose) {
- printf(_("receive_dhcp_packet() result: %d\n"),recv_result);
- printf(_("receive_dhcp_packet() source: %s\n"),inet_ntoa(source_address.sin_addr));
- }
-
- memcpy(address,&source_address,sizeof(source_address));
- return OK;
- }
- }
-
- return OK;
- }
-
-
-/* creates a socket for DHCP communication */
-int create_dhcp_socket(void){
- struct sockaddr_in myname;
- struct ifreq interface;
- int sock;
- int flag=1;
-
- /* Set up the address we're going to bind to. */
- bzero(&myname,sizeof(myname));
- myname.sin_family=AF_INET;
- myname.sin_port=htons(DHCP_CLIENT_PORT);
- myname.sin_addr.s_addr=INADDR_ANY; /* listen on any address */
- bzero(&myname.sin_zero,sizeof(myname.sin_zero));
-
- /* create a socket for DHCP communications */
- sock=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
- if(sock<0){
- printf(_("Error: Could not create socket!\n"));
- exit(STATE_UNKNOWN);
- }
-
- if (verbose)
- printf("DHCP socket: %d\n",sock);
-
- /* set the reuse address flag so we don't get errors when restarting */
- flag=1;
- if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(char *)&flag,sizeof(flag))<0){
- printf(_("Error: Could not set reuse address option on DHCP socket!\n"));
- exit(STATE_UNKNOWN);
- }
-
- /* set the broadcast option - we need this to listen to DHCP broadcast messages */
- if(setsockopt(sock,SOL_SOCKET,SO_BROADCAST,(char *)&flag,sizeof flag)<0){
- printf(_("Error: Could not set broadcast option on DHCP socket!\n"));
- exit(STATE_UNKNOWN);
- }
-
- /* bind socket to interface */
-#if defined(__linux__)
- strncpy(interface.ifr_ifrn.ifrn_name,network_interface_name,IFNAMSIZ);
- if(setsockopt(sock,SOL_SOCKET,SO_BINDTODEVICE,(char *)&interface,sizeof(interface))<0){
- printf(_("Error: Could not bind socket to interface %s. Check your privileges...\n"),network_interface_name);
- exit(STATE_UNKNOWN);
- }
-
-#else
- strncpy(interface.ifr_name,network_interface_name,IFNAMSIZ);
-#endif
-
- /* bind the socket */
- if(bind(sock,(struct sockaddr *)&myname,sizeof(myname))<0){
- printf(_("Error: Could not bind to DHCP socket (port %d)! Check your privileges...\n"),DHCP_CLIENT_PORT);
- exit(STATE_UNKNOWN);
- }
-
- return sock;
- }
-
-
-/* closes DHCP socket */
-int close_dhcp_socket(int sock){
-
- close(sock);
-
- return OK;
- }
-
-
-/* adds a requested server address to list in memory */
-int add_requested_server(struct in_addr server_address){
- requested_server *new_server;
-
- new_server=(requested_server *)malloc(sizeof(requested_server));
- if(new_server==NULL)
- return ERROR;
-
- new_server->server_address=server_address;
-
- new_server->next=requested_server_list;
- requested_server_list=new_server;
-
- requested_servers++;
-
- if (verbose)
- printf(_("Requested server address: %s\n"),inet_ntoa(new_server->server_address));
-
- return OK;
- }
-
-
-
-
-/* adds a DHCP OFFER to list in memory */
-int add_dhcp_offer(struct in_addr source,dhcp_packet *offer_packet){
- dhcp_offer *new_offer;
- int x;
- int y;
- unsigned option_type;
- unsigned option_length;
-
- if(offer_packet==NULL)
- return ERROR;
-
- /* process all DHCP options present in the packet */
- for(x=4;x<MAX_DHCP_OPTIONS_LENGTH;){
-
- /* end of options (0 is really just a pad, but bail out anyway) */
- if((int)offer_packet->options[x]==-1 || (int)offer_packet->options[x]==0)
- break;
-
- /* get option type */
- option_type=offer_packet->options[x++];
-
- /* get option length */
- option_length=offer_packet->options[x++];
-
- if (verbose)
- printf("Option: %d (0x%02X)\n",option_type,option_length);
-
- /* get option data */
- if(option_type==DHCP_OPTION_LEASE_TIME) {
- memcpy(&dhcp_lease_time, &offer_packet->options[x],
- sizeof(dhcp_lease_time));
- dhcp_lease_time = ntohl(dhcp_lease_time);
- }
- if(option_type==DHCP_OPTION_RENEWAL_TIME) {
- memcpy(&dhcp_renewal_time, &offer_packet->options[x],
- sizeof(dhcp_renewal_time));
- dhcp_renewal_time = ntohl(dhcp_renewal_time);
- }
- if(option_type==DHCP_OPTION_REBINDING_TIME) {
- memcpy(&dhcp_rebinding_time, &offer_packet->options[x],
- sizeof(dhcp_rebinding_time));
- dhcp_rebinding_time = ntohl(dhcp_rebinding_time);
- }
-
- /* skip option data we're ignoring */
- else
- for(y=0;y<option_length;y++,x++);
- }
-
- if (verbose) {
- if(dhcp_lease_time==DHCP_INFINITE_TIME)
- printf(_("Lease Time: Infinite\n"));
- else
- printf(_("Lease Time: %lu seconds\n"),(unsigned long)dhcp_lease_time);
- if(dhcp_renewal_time==DHCP_INFINITE_TIME)
- printf(_("Renewal Time: Infinite\n"));
- else
- printf(_("Renewal Time: %lu seconds\n"),(unsigned long)dhcp_renewal_time);
- if(dhcp_rebinding_time==DHCP_INFINITE_TIME)
- printf(_("Rebinding Time: Infinite\n"));
- printf(_("Rebinding Time: %lu seconds\n"),(unsigned long)dhcp_rebinding_time);
- }
-
- new_offer=(dhcp_offer *)malloc(sizeof(dhcp_offer));
-
- if(new_offer==NULL)
- return ERROR;
-
- new_offer->server_address=source;
- new_offer->offered_address=offer_packet->yiaddr;
- new_offer->lease_time=dhcp_lease_time;
- new_offer->renewal_time=dhcp_renewal_time;
- new_offer->rebinding_time=dhcp_rebinding_time;
-
-
- if (verbose) {
- printf(_("Added offer from server @ %s"),inet_ntoa(new_offer->server_address));
- printf(_(" of IP address %s\n"),inet_ntoa(new_offer->offered_address));
- }
-
- /* add new offer to head of list */
- new_offer->next=dhcp_offer_list;
- dhcp_offer_list=new_offer;
-
- return OK;
- }
-
-
-/* frees memory allocated to DHCP OFFER list */
-int free_dhcp_offer_list(void){
- dhcp_offer *this_offer;
- dhcp_offer *next_offer;
-
- for(this_offer=dhcp_offer_list;this_offer!=NULL;this_offer=next_offer){
- next_offer=this_offer->next;
- free(this_offer);
- }
-
- return OK;
- }
-
-
-/* frees memory allocated to requested server list */
-int free_requested_server_list(void){
- requested_server *this_server;
- requested_server *next_server;
-
- for(this_server=requested_server_list;this_server!=NULL;this_server=next_server){
- next_server=this_server->next;
- free(this_server);
- }
-
- return OK;
- }
-
-
-/* gets state and plugin output to return */
-int get_results(void){
- dhcp_offer *temp_offer;
- requested_server *temp_server;
- int result;
- u_int32_t max_lease_time=0;
-
- received_requested_address=FALSE;
-
- /* checks responses from requested servers */
- requested_responses=0;
- if(requested_servers>0){
-
- for(temp_server=requested_server_list;temp_server!=NULL;temp_server=temp_server->next){
-
- for(temp_offer=dhcp_offer_list;temp_offer!=NULL;temp_offer=temp_offer->next){
-
- /* get max lease time we were offered */
- if(temp_offer->lease_time>max_lease_time || temp_offer->lease_time==DHCP_INFINITE_TIME)
- max_lease_time=temp_offer->lease_time;
-
- /* see if we got the address we requested */
- if(!memcmp(&requested_address,&temp_offer->offered_address,sizeof(requested_address)))
- received_requested_address=TRUE;
-
- /* see if the servers we wanted a response from talked to us or not */
- if(!memcmp(&temp_offer->server_address,&temp_server->server_address,sizeof(temp_server->server_address))){
- if (verbose) {
- printf(_("DHCP Server Match: Offerer=%s"),inet_ntoa(temp_offer->server_address));
- printf(_(" Requested=%s\n"),inet_ntoa(temp_server->server_address));
- }
- requested_responses++;
- }
- }
- }
-
- }
-
- /* else check and see if we got our requested address from any server */
- else{
-
- for(temp_offer=dhcp_offer_list;temp_offer!=NULL;temp_offer=temp_offer->next){
-
- /* get max lease time we were offered */
- if(temp_offer->lease_time>max_lease_time || temp_offer->lease_time==DHCP_INFINITE_TIME)
- max_lease_time=temp_offer->lease_time;
-
- /* see if we got the address we requested */
- if(!memcmp(&requested_address,&temp_offer->offered_address,sizeof(requested_address)))
- received_requested_address=TRUE;
- }
- }
-
- result=STATE_OK;
- if(valid_responses==0)
- result=STATE_CRITICAL;
- else if(requested_servers>0 && requested_responses==0)
- result=STATE_CRITICAL;
- else if(requested_responses<requested_servers)
- result=STATE_WARNING;
- else if(request_specific_address==TRUE && received_requested_address==FALSE)
- result=STATE_WARNING;
-
-
- printf("DHCP %s: ",(result==STATE_OK)?"ok":"problem");
-
- /* we didn't receive any DHCPOFFERs */
- if(dhcp_offer_list==NULL){
- printf(_("No DHCPOFFERs were received.\n"));
- return result;
- }
-
- printf(_("Received %d DHCPOFFER(s)"),valid_responses);
-
- if(requested_servers>0)
- printf(_(", %s%d of %d requested servers responded"),((requested_responses<requested_servers) && requested_responses>0)?"only ":"",requested_responses,requested_servers);
-
- if(request_specific_address==TRUE)
- printf(_(", requested address (%s) was %soffered"),inet_ntoa(requested_address),(received_requested_address==TRUE)?"":_("not "));
-
- printf(_(", max lease time = "));
- if(max_lease_time==DHCP_INFINITE_TIME)
- printf(_("Infinity"));
- else
- printf("%lu sec",(unsigned long)max_lease_time);
-
- printf(".\n");
-
- return result;
- }
-
-
-/* process command-line arguments */
-int process_arguments(int argc, char **argv){
- int c;
-
- if(argc<1)
- return ERROR;
-
- c=0;
- while((c+=(call_getopt(argc-c,&argv[c])))<argc){
-
- /*
- if(is_option(argv[c]))
- continue;
- */
- }
-
- return validate_arguments();
- }
-
-
-
-int call_getopt(int argc, char **argv){
- int c=0;
- int i=0;
- struct in_addr ipaddress;
-
-#ifdef HAVE_GETOPT_H
- int option_index = 0;
- static struct option long_options[] =
- {
- {"serverip", required_argument,0,'s'},
- {"requestedip", required_argument,0,'r'},
- {"timeout", required_argument,0,'t'},
- {"interface", required_argument,0,'i'},
- {"verbose", no_argument, 0,'v'},
- {"version", no_argument, 0,'V'},
- {"help", no_argument, 0,'h'},
- {0,0,0,0}
- };
-#endif
-
- while(1){
-#ifdef HAVE_GETOPT_H
- c=getopt_long(argc,argv,"+hVvt:s:r:t:i:",long_options,&option_index);
-#else
- c=getopt(argc,argv,"+?hVvt:s:r:t:i:");
-#endif
-
- i++;
-
- if(c==-1||c==EOF||c==1)
- break;
-
- switch(c){
- case 'w':
- case 'r':
- case 't':
- case 'i':
- i++;
- break;
- default:
- break;
- }
-
- switch(c){
-
- case 's': /* DHCP server address */
- if(inet_aton(optarg,&ipaddress))
- add_requested_server(ipaddress);
- /*
- else
- usage("Invalid server IP address\n");
- */
- break;
-
- case 'r': /* address we are requested from DHCP servers */
- if(inet_aton(optarg,&ipaddress)){
- requested_address=ipaddress;
- request_specific_address=TRUE;
- }
- /*
- else
- usage("Invalid requested IP address\n");
- */
- break;
-
- case 't': /* timeout */
-
- /*
- if(is_intnonneg(optarg))
- */
- if(atoi(optarg)>0)
- dhcpoffer_timeout=atoi(optarg);
- /*
- else
- usage("Time interval must be a nonnegative integer\n");
- */
- break;
-
- case 'i': /* interface name */
-
- strncpy(network_interface_name,optarg,sizeof(network_interface_name)-1);
- network_interface_name[sizeof(network_interface_name)-1]='\x0';
-
- break;
-
- case 'V': /* version */
- print_revision(progname,revision);
- exit(STATE_OK);
-
- case 'h': /* help */
- print_help();
- exit(STATE_OK);
-
- case 'v': /* verbose */
- verbose=1;
- break;
-
- case '?': /* help */
- usage2 (_("Unknown argument"), optarg);
- break;
-
- default:
- break;
- }
- }
-
- return i;
- }
-
-
-int validate_arguments(void){
-
- return OK;
- }
-
-#if defined(__sun__) || defined(__solaris__) || defined(__hpux__)
-
- /* Kompf 2000-2003 see ACKNOWLEDGEMENTS */
-
-/* get a message from a stream; return type of message */
-static int get_msg(int fd)
-{
- int flags = 0;
- int res, ret;
- ctl_area[0] = 0;
- dat_area[0] = 0;
- ret = 0;
- res = getmsg(fd, &ctl, &dat, &flags);
-
- if(res < 0) {
- if(errno == EINTR) {
- return(GOT_INTR);
- } else {
- printf("%s\n", "get_msg FAILED.");
- return(GOT_ERR);
- }
- }
- if(ctl.len > 0) {
- ret |= GOT_CTRL;
- }
- if(dat.len > 0) {
- ret |= GOT_DATA;
- }
- return(ret);
-}
-
-/* verify that dl_primitive in ctl_area = prim */
-static int check_ctrl(int prim)
-{
- dl_error_ack_t *err_ack = (dl_error_ack_t *)ctl_area;
- if(err_ack->dl_primitive != prim) {
- printf(_("Error: DLPI stream API failed to get MAC in check_ctrl: %s.\n"), strerror(errno));
- exit(STATE_UNKNOWN);
- }
- return 0;
-}
-
-/* put a control message on a stream */
-static int put_ctrl(int fd, int len, int pri)
-{
- ctl.len = len;
- if(putmsg(fd, &ctl, 0, pri) < 0) {
- printf(_("Error: DLPI stream API failed to get MAC in put_ctrl/putmsg(): %s.\n"), strerror(errno));
- exit(STATE_UNKNOWN);
- }
- return 0;
-}
-
-/* put a control + data message on a stream */
-static int put_both(int fd, int clen, int dlen, int pri)
-{
- ctl.len = clen;
- dat.len = dlen;
- if(putmsg(fd, &ctl, &dat, pri) < 0) {
- printf(_("Error: DLPI stream API failed to get MAC in put_both/putmsg().\n"), strerror(errno));
- exit(STATE_UNKNOWN);
- }
- return 0;
-}
-
-/* open file descriptor and attach */
-static int dl_open(const char *dev, int unit, int *fd)
-{
- dl_attach_req_t *attach_req = (dl_attach_req_t *)ctl_area;
- if((*fd = open(dev, O_RDWR)) == -1) {
- printf(_("Error: DLPI stream API failed to get MAC in dl_attach_req/open(%s..): %s.\n"), dev, strerror(errno));
- exit(STATE_UNKNOWN);
- }
- attach_req->dl_primitive = DL_ATTACH_REQ;
- attach_req->dl_ppa = unit;
- put_ctrl(*fd, sizeof(dl_attach_req_t), 0);
- get_msg(*fd);
- return check_ctrl(DL_OK_ACK);
-}
-
-/* send DL_BIND_REQ */
-static int dl_bind(int fd, int sap, u_char *addr)
-{
- dl_bind_req_t *bind_req = (dl_bind_req_t *)ctl_area;
- dl_bind_ack_t *bind_ack = (dl_bind_ack_t *)ctl_area;
- bind_req->dl_primitive = DL_BIND_REQ;
- bind_req->dl_sap = sap;
- bind_req->dl_max_conind = 1;
- bind_req->dl_service_mode = DL_CLDLS;
- bind_req->dl_conn_mgmt = 0;
- bind_req->dl_xidtest_flg = 0;
- put_ctrl(fd, sizeof(dl_bind_req_t), 0);
- get_msg(fd);
- if (GOT_ERR == check_ctrl(DL_BIND_ACK)) {
- printf(_("Error: DLPI stream API failed to get MAC in dl_bind/check_ctrl(): %s.\n"), strerror(errno));
- exit(STATE_UNKNOWN);
- }
- bcopy((u_char *)bind_ack + bind_ack->dl_addr_offset, addr,
- bind_ack->dl_addr_length);
- return 0;
-}
-
-/***********************************************************************
- * interface:
- * function mac_addr_dlpi - get the mac address of the interface with
- * type dev (eg lnc, hme) and unit (0, 1 ..)
- *
- * parameter: addr: an array of six bytes, has to be allocated by the caller
- *
- * return: 0 if OK, -1 if the address could not be determined
- *
- *
- ***********************************************************************/
-
-long mac_addr_dlpi( const char *dev, int unit, u_char *addr) {
-
- int fd;
- u_char mac_addr[25];
-
- if (GOT_ERR != dl_open(dev, unit, &fd)) {
- if (GOT_ERR != dl_bind(fd, INSAP, mac_addr)) {
- bcopy( mac_addr, addr, 6);
- return 0;
- }
- }
- close(fd);
- return -1;
-}
-
- /* Kompf 2000-2003 */
-
-#endif
-
-
-/* print usage help */
-void print_help(void){
-
- print_revision(progname,revision);
-
- printf("Copyright (c) 2001-2004 Ethan Galstad (nagios@nagios.org)\n\n");
- printf (COPYRIGHT, copyright, email);
-
- printf(_("This plugin tests the availability of DHCP servers on a network.\n\n"));
-
- print_usage();
-
- printf(_("\
- -s, --serverip=IPADDRESS\n\
- IP address of DHCP server that we must hear from\n\
- -r, --requestedip=IPADDRESS\n\
- IP address that should be offered by at least one DHCP server\n\
- -t, --timeout=INTEGER\n\
- Seconds to wait for DHCPOFFER before timeout occurs\n\
- -i, --interface=STRING\n\
- Interface to to use for listening (i.e. eth0)\n\
- -v, --verbose\n\
- Print extra information (command-line use only)\n\
- -h, --help\n\
- Print detailed help screen\n\
- -V, --version\n\
- Print version information\n"));
-}
-
-
-void print_usage(void)
-{
- printf("\
-Usage: %s [-s serverip] [-r requestedip] [-t timeout] [-i interface]\n\
- [-v]",progname);
-}
-
-
-
diff --git a/plugins/check_icmp.c b/plugins/check_icmp.c
--- a/plugins/check_icmp.c
+++ /dev/null
@@ -1,1199 +0,0 @@
-/*
- * $Id$
- *
- * Author: Andreas Ericsson <ae@op5.se>
- *
- * License: GNU GPL 2.0 or any later version.
- *
- * Relevant RFC's: 792 (ICMP), 791 (IP)
- *
- * This program was modeled somewhat after the check_icmp program,
- * which was in turn a hack of fping (www.fping.org) but has been
- * completely rewritten since to generate higher precision rta values,
- * and support several different modes as well as setting ttl to control.
- * redundant routes. The only remainders of fping is currently a few
- * function names.
- *
- */
-
-#include <sys/time.h>
-#include <sys/types.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <stddef.h>
-#include <errno.h>
-#include <string.h>
-#include <ctype.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <netinet/in_systm.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <netinet/ip_icmp.h>
-#include <arpa/inet.h>
-#include <signal.h>
-
-/** sometimes undefined system macros (quite a few, actually) **/
-#ifndef MAXTTL
-# define MAXTTL 255
-#endif
-#ifndef INADDR_NONE
-# define INADDR_NONE 0xffffffU
-#endif
-
-#ifndef SOL_IP
-#define SOL_IP 0
-#endif
-
-/* we bundle these in one #ifndef, since they're all from BSD
- * Put individual #ifndef's around those that bother you */
-#ifndef ICMP_UNREACH_NET_UNKNOWN
-# define ICMP_UNREACH_NET_UNKNOWN 6
-# define ICMP_UNREACH_HOST_UNKNOWN 7
-# define ICMP_UNREACH_ISOLATED 8
-# define ICMP_UNREACH_NET_PROHIB 9
-# define ICMP_UNREACH_HOST_PROHIB 10
-# define ICMP_UNREACH_TOSNET 11
-# define ICMP_UNREACH_TOSHOST 12
-#endif
-/* tru64 has the ones above, but not these */
-#ifndef ICMP_UNREACH_FILTER_PROHIB
-# define ICMP_UNREACH_FILTER_PROHIB 13
-# define ICMP_UNREACH_HOST_PRECEDENCE 14
-# define ICMP_UNREACH_PRECEDENCE_CUTOFF 15
-#endif
-
-
-/** typedefs and such **/
-enum states {
- STATE_OK = 0,
- STATE_WARNING,
- STATE_CRITICAL,
- STATE_UNKNOWN,
- STATE_DEPENDENT,
- STATE_OOB
-};
-
-typedef unsigned short range_t; /* type for get_range() -- unimplemented */
-
-typedef struct rta_host {
- unsigned short id; /* id in **table, and icmp pkts */
- char *name; /* arg used for adding this host */
- char *msg; /* icmp error message, if any */
- struct sockaddr_in saddr_in; /* the address of this host */
- struct in_addr error_addr; /* stores address of error replies */
- unsigned long long time_waited; /* total time waited, in usecs */
- unsigned int icmp_sent, icmp_recv, icmp_lost; /* counters */
- unsigned char icmp_type, icmp_code; /* type and code from errors */
- unsigned short flags; /* control/status flags */
- double rta; /* measured RTA */
- unsigned char pl; /* measured packet loss */
- struct rta_host *next; /* linked list */
-} rta_host;
-
-#define FLAG_LOST_CAUSE 0x01 /* decidedly dead target. */
-
-/* threshold structure. all values are maximum allowed, exclusive */
-typedef struct threshold {
- unsigned char pl; /* max allowed packet loss in percent */
- unsigned int rta; /* roundtrip time average, microseconds */
-} threshold;
-
-/* the data structure */
-typedef struct icmp_ping_data {
- struct timeval stime; /* timestamp (saved in protocol struct as well) */
- unsigned short ping_id;
-} icmp_ping_data;
-
-/* the different modes of this program are as follows:
- * MODE_RTA: send all packets no matter what (mimic check_icmp and check_ping)
- * MODE_HOSTCHECK: Return immediately upon any sign of life
- * In addition, sends packets to ALL addresses assigned
- * to this host (as returned by gethostbyname() or
- * gethostbyaddr() and expects one host only to be checked at
- * a time. Therefore, any packet response what so ever will
- * count as a sign of life, even when received outside
- * crit.rta limit. Do not misspell any additional IP's.
- * MODE_ALL: Requires packets from ALL requested IP to return OK (default).
- * MODE_ICMP: implement something similar to check_icmp (MODE_RTA without
- * tcp and udp args does this)
- */
-#define MODE_RTA 0
-#define MODE_HOSTCHECK 1
-#define MODE_ALL 2
-#define MODE_ICMP 3
-
-/* the different ping types we can do
- * TODO: investigate ARP ping as well */
-#define HAVE_ICMP 1
-#define HAVE_UDP 2
-#define HAVE_TCP 4
-#define HAVE_ARP 8
-
-#define MIN_PING_DATA_SIZE sizeof(struct icmp_ping_data)
-#define MAX_IP_PKT_SIZE 65536 /* (theoretical) max IP packet size */
-#define IP_HDR_SIZE 20
-#define MAX_PING_DATA (MAX_IP_PKT_SIZE - IP_HDR_SIZE - ICMP_MINLEN)
-#define DEFAULT_PING_DATA_SIZE (MIN_PING_DATA_SIZE + 44)
-
-/* various target states */
-#define TSTATE_INACTIVE 0x01 /* don't ping this host anymore */
-#define TSTATE_WAITING 0x02 /* unanswered packets on the wire */
-#define TSTATE_ALIVE 0x04 /* target is alive (has answered something) */
-#define TSTATE_UNREACH 0x08
-
-/** prototypes **/
-static void usage(unsigned char, char *);
-static u_int get_timevar(const char *);
-static u_int get_timevaldiff(struct timeval *, struct timeval *);
-static int wait_for_reply(int, u_int);
-static int recvfrom_wto(int, char *, unsigned int, struct sockaddr *, u_int *);
-static int send_icmp_ping(int, struct rta_host *);
-static int get_threshold(char *str, threshold *th);
-static void run_checks(void);
-static int add_target(char *);
-static int add_target_ip(char *, struct in_addr *);
-static int handle_random_icmp(struct icmp *, struct sockaddr_in *);
-static unsigned short icmp_checksum(unsigned short *, int);
-static void finish(int);
-static void crash(const char *, ...);
-
-/** external **/
-extern int optind, opterr, optopt;
-extern char *optarg;
-extern char **environ;
-
-/** global variables **/
-static char *progname;
-static struct rta_host **table, *cursor, *list;
-static threshold crit = {80, 500000}, warn = {40, 200000};
-static int mode, protocols, sockets, debug = 0, timeout = 10;
-static unsigned short icmp_pkt_size, icmp_data_size = DEFAULT_PING_DATA_SIZE;
-static unsigned int icmp_sent = 0, icmp_recv = 0, icmp_lost = 0;
-#define icmp_pkts_en_route (icmp_sent - (icmp_recv + icmp_lost))
-static unsigned short targets_down = 0, targets = 0, packets = 0;
-#define targets_alive (targets - targets_down)
-static unsigned int retry_interval, pkt_interval, target_interval;
-static int icmp_sock, tcp_sock, udp_sock, status = STATE_OK;
-static pid_t pid;
-static struct timezone tz;
-static struct timeval prog_start;
-static unsigned long long max_completion_time = 0;
-static unsigned char ttl = 0; /* outgoing ttl */
-static unsigned int warn_down = 1, crit_down = 1; /* host down threshold values */
-float pkt_backoff_factor = 1.5;
-float target_backoff_factor = 1.5;
-
-/** code start **/
-static void
-crash(const char *fmt, ...)
-{
- va_list ap;
-
- printf("%s: ", progname);
-
- va_start(ap, fmt);
- vprintf(fmt, ap);
- va_end(ap);
-
- if(errno) printf(": %s", strerror(errno));
- puts("");
-
- exit(3);
-}
-
-
-static char *
-get_icmp_error_msg(unsigned char icmp_type, unsigned char icmp_code)
-{
- char *msg = "unreachable";
-
- if(debug > 1) printf("get_icmp_error_msg(%u, %u)\n", icmp_type, icmp_code);
- switch(icmp_type) {
- case ICMP_UNREACH:
- switch(icmp_code) {
- case ICMP_UNREACH_NET: msg = "Net unreachable"; break;
- case ICMP_UNREACH_HOST: msg = "Host unreachable"; break;
- case ICMP_UNREACH_PROTOCOL: msg = "Protocol unreachable (firewall?)"; break;
- case ICMP_UNREACH_PORT: msg = "Port unreachable (firewall?)"; break;
- case ICMP_UNREACH_NEEDFRAG: msg = "Fragmentation needed"; break;
- case ICMP_UNREACH_SRCFAIL: msg = "Source route failed"; break;
- case ICMP_UNREACH_ISOLATED: msg = "Source host isolated"; break;
- case ICMP_UNREACH_NET_UNKNOWN: msg = "Unknown network"; break;
- case ICMP_UNREACH_HOST_UNKNOWN: msg = "Unknown host"; break;
- case ICMP_UNREACH_NET_PROHIB: msg = "Network denied (firewall?)"; break;
- case ICMP_UNREACH_HOST_PROHIB: msg = "Host denied (firewall?)"; break;
- case ICMP_UNREACH_TOSNET: msg = "Bad TOS for network (firewall?)"; break;
- case ICMP_UNREACH_TOSHOST: msg = "Bad TOS for host (firewall?)"; break;
- case ICMP_UNREACH_FILTER_PROHIB: msg = "Prohibited by filter (firewall)"; break;
- case ICMP_UNREACH_HOST_PRECEDENCE: msg = "Host precedence violation"; break;
- case ICMP_UNREACH_PRECEDENCE_CUTOFF: msg = "Precedence cutoff"; break;
- default: msg = "Invalid code"; break;
- }
- break;
-
- case ICMP_TIMXCEED:
- /* really 'out of reach', or non-existant host behind a router serving
- * two different subnets */
- switch(icmp_code) {
- case ICMP_TIMXCEED_INTRANS: msg = "Time to live exceeded in transit"; break;
- case ICMP_TIMXCEED_REASS: msg = "Fragment reassembly time exceeded"; break;
- default: msg = "Invalid code"; break;
- }
- break;
-
- case ICMP_SOURCEQUENCH: msg = "Transmitting too fast"; break;
- case ICMP_REDIRECT: msg = "Redirect (change route)"; break;
- case ICMP_PARAMPROB: msg = "Bad IP header (required option absent)"; break;
-
- /* the following aren't error messages, so ignore */
- case ICMP_TSTAMP:
- case ICMP_TSTAMPREPLY:
- case ICMP_IREQ:
- case ICMP_IREQREPLY:
- case ICMP_MASKREQ:
- case ICMP_MASKREPLY:
- default: msg = ""; break;
- }
-
- return msg;
-}
-
-static int
-handle_random_icmp(struct icmp *p, struct sockaddr_in *addr)
-{
- struct icmp *sent_icmp = NULL;
- struct rta_host *host = NULL;
- unsigned char *ptr;
-
- if(p->icmp_type == ICMP_ECHO && p->icmp_id == pid) {
- /* echo request from us to us (pinging localhost) */
- return 0;
- }
-
- ptr = (unsigned char *)p;
- if(debug) printf("handle_random_icmp(%p, %p)\n", (void *)p, (void *)addr);
-
- /* only handle a few types, since others can't possibly be replies to
- * us in a sane network (if it is anyway, it will be counted as lost
- * at summary time, but not as quickly as a proper response */
- /* TIMXCEED can be an unreach from a router with multiple IP's which
- * serves two different subnets on the same interface and a dead host
- * on one net is pinged from the other. The router will respond to
- * itself and thus set TTL=0 so as to not loop forever. Even when
- * TIMXCEED actually sends a proper icmp response we will have passed
- * too many hops to have a hope of reaching it later, in which case it
- * indicates overconfidence in the network, poor routing or both. */
- if(p->icmp_type != ICMP_UNREACH && p->icmp_type != ICMP_TIMXCEED &&
- p->icmp_type != ICMP_SOURCEQUENCH && p->icmp_type != ICMP_PARAMPROB)
- {
- return 0;
- }
-
- /* might be for us. At least it holds the original package (according
- * to RFC 792). If it isn't, just ignore it */
- sent_icmp = (struct icmp *)(ptr + 28);
- if(sent_icmp->icmp_type != ICMP_ECHO || sent_icmp->icmp_id != pid ||
- sent_icmp->icmp_seq >= targets)
- {
- if(debug) printf("Packet is no response to a packet we sent\n");
- return 0;
- }
-
- /* it is indeed a response for us */
- host = table[sent_icmp->icmp_seq];
- if(debug) {
- printf("Received \"%s\" from %s for ICMP ECHO sent to %s.\n",
- get_icmp_error_msg(p->icmp_type, p->icmp_code),
- inet_ntoa(addr->sin_addr), host->name);
- }
-
- icmp_lost++;
- host->icmp_lost++;
- /* don't spend time on lost hosts any more */
- if(host->flags & FLAG_LOST_CAUSE) return 0;
-
- /* source quench means we're sending too fast, so increase the
- * interval and mark this packet lost */
- if(p->icmp_type == ICMP_SOURCEQUENCH) {
- pkt_interval *= pkt_backoff_factor;
- target_interval *= target_backoff_factor;
- }
- else {
- targets_down++;
- host->flags |= FLAG_LOST_CAUSE;
- }
- host->icmp_type = p->icmp_type;
- host->icmp_code = p->icmp_code;
- host->error_addr.s_addr = addr->sin_addr.s_addr;
-
- return 0;
-}
-
-int
-main(int argc, char **argv)
-{
- int i;
- char *ptr;
- long int arg;
- int icmp_sockerrno, udp_sockerrno, tcp_sockerrno;
- int result;
- struct rta_host *host;
-
- /* we only need to be setsuid when we get the sockets, so do
- * that before pointer magic (esp. on network data) */
- icmp_sockerrno = udp_sockerrno = tcp_sockerrno = sockets = 0;
-
- if((icmp_sock = socket(PF_INET, SOCK_RAW, IPPROTO_ICMP)) != -1)
- sockets |= HAVE_ICMP;
- else icmp_sockerrno = errno;
-
- /* if((udp_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1) */
- /* sockets |= HAVE_UDP; */
- /* else udp_sockerrno = errno; */
-
- /* if((tcp_sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) != -1) */
- /* sockets |= HAVE_TCP; */
- /* else tcp_sockerrno = errno; */
-
- /* now drop privileges (no effect if not setsuid or geteuid() == 0) */
- setuid(getuid());
-
- /* POSIXLY_CORRECT might break things, so unset it (the portable way) */
- environ = NULL;
-
- /* use the pid to mark packets as ours */
- pid = getpid();
- /* printf("pid = %u\n", pid); */
-
- /* get calling name the old-fashioned way for portability instead
- * of relying on the glibc-ism __progname */
- ptr = strrchr(argv[0], '/');
- if(ptr) progname = &ptr[1];
- else progname = argv[0];
-
- /* now set defaults. Use progname to set them initially (allows for
- * superfast check_host program when target host is up */
- cursor = list = NULL;
- table = NULL;
-
- mode = MODE_RTA;
- crit.rta = 500000;
- crit.pl = 80;
- warn.rta = 200000;
- warn.pl = 40;
- protocols = HAVE_ICMP | HAVE_UDP | HAVE_TCP;
- pkt_interval = 80000; /* 80 msec packet interval by default */
- packets = 5;
-
- if(!strcmp(progname, "check_icmp") || !strcmp(progname, "check_ping")) {
- mode = MODE_ICMP;
- protocols = HAVE_ICMP;
- }
- else if(!strcmp(progname, "check_host")) {
- mode = MODE_HOSTCHECK;
- pkt_interval = 1000000;
- packets = 5;
- crit.rta = warn.rta = 1000000;
- crit.pl = warn.pl = 100;
- }
- else if(!strcmp(progname, "check_rta_multi")) {
- mode = MODE_ALL;
- target_interval = 0;
- pkt_interval = 50000;
- packets = 5;
- }
-
- /* parse the arguments */
- for(i = 1; i < argc; i++) {
- while((arg = getopt(argc, argv, "vhVw:c:n:p:t:H:i:b:I:l:")) != EOF) {
- switch(arg) {
- case 'v':
- debug++;
- break;
- case 'b':
- /* silently ignored for now */
- break;
- case 'i':
- pkt_interval = get_timevar(optarg);
- break;
- case 'I':
- target_interval = get_timevar(optarg);
- break;
- case 'w':
- get_threshold(optarg, &warn);
- break;
- case 'c':
- get_threshold(optarg, &crit);
- break;
- case 'n':
- case 'p':
- packets = strtoul(optarg, NULL, 0);
- break;
- case 't':
- timeout = strtoul(optarg, NULL, 0);
- if(!timeout) timeout = 10;
- break;
- case 'H':
- add_target(optarg);
- break;
- case 'l':
- ttl = (unsigned char)strtoul(optarg, NULL, 0);
- break;
- case 'd': /* implement later, for cluster checks */
- warn_down = (unsigned char)strtoul(optarg, &ptr, 0);
- if(ptr) {
- crit_down = (unsigned char)strtoul(ptr + 1, NULL, 0);
- }
- break;
- case 'h': case 'V': default:
- usage(arg, NULL);
- break;
- }
- }
- }
-
- argv = &argv[optind];
- while(*argv) {
- add_target(*argv);
- argv++;
- }
- if(!targets) {
- errno = 0;
- crash("No hosts to check");
- exit(3);
- }
-
- if(!sockets) {
- if(icmp_sock == -1) {
- errno = icmp_sockerrno;
- crash("Failed to obtain ICMP socket");
- return -1;
- }
- /* if(udp_sock == -1) { */
- /* errno = icmp_sockerrno; */
- /* crash("Failed to obtain UDP socket"); */
- /* return -1; */
- /* } */
- /* if(tcp_sock == -1) { */
- /* errno = icmp_sockerrno; */
- /* crash("Failed to obtain TCP socker"); */
- /* return -1; */
- /* } */
- }
- if(!ttl) ttl = 64;
-
- if(icmp_sock) {
- result = setsockopt(icmp_sock, SOL_IP, IP_TTL, &ttl, sizeof(ttl));
- if(debug) {
- if(result == -1) printf("setsockopt failed\n");
- else printf("ttl set to %u\n", ttl);
- }
- }
-
- /* stupid users should be able to give whatever thresholds they want
- * (nothing will break if they do), but some anal plugin maintainer
- * will probably add some printf() thing here later, so it might be
- * best to at least show them where to do it. ;) */
- if(warn.pl > crit.pl) warn.pl = crit.pl;
- if(warn.rta > crit.rta) warn.rta = crit.rta;
- if(warn_down > crit_down) crit_down = warn_down;
-
- signal(SIGINT, finish);
- signal(SIGHUP, finish);
- signal(SIGTERM, finish);
- signal(SIGALRM, finish);
- if(debug) printf("Setting alarm timeout to %u seconds\n", timeout);
- alarm(timeout);
-
- /* make sure we don't wait any longer than necessary */
- gettimeofday(&prog_start, &tz);
- max_completion_time =
- ((targets * packets * pkt_interval) + (targets * target_interval)) +
- (targets * packets * crit.rta) + crit.rta;
-
- if(debug) {
- printf("packets: %u, targets: %u\n"
- "target_interval: %0.3f, pkt_interval %0.3f\n"
- "crit.rta: %0.3f\n"
- "max_completion_time: %0.3f\n",
- packets, targets,
- (float)target_interval / 1000, (float)pkt_interval / 1000,
- (float)crit.rta / 1000,
- (float)max_completion_time / 1000);
- }
-
- if(debug) {
- if(max_completion_time > (u_int)timeout * 1000000) {
- printf("max_completion_time: %llu timeout: %u\n",
- max_completion_time, timeout);
- printf("Timout must be at lest %llu\n",
- max_completion_time / 1000000 + 1);
- }
- }
-
- icmp_pkt_size = icmp_data_size + ICMP_MINLEN;
- if(debug > 2) printf("icmp_pkt_size = %u\n", icmp_pkt_size);
- if(icmp_pkt_size < sizeof(struct icmp) + sizeof(struct icmp_ping_data)) {
- icmp_pkt_size = sizeof(struct icmp) + sizeof(struct icmp_ping_data);
- }
- if(debug > 2) printf("icmp_pkt_size = %u\n", icmp_pkt_size);
-
- if(debug) {
- printf("crit = {%u, %u%%}, warn = {%u, %u%%}\n",
- crit.rta, crit.pl, warn.rta, warn.pl);
- printf("pkt_interval: %u target_interval: %u retry_interval: %u\n",
- pkt_interval, target_interval, retry_interval);
- printf("icmp_pkt_size: %u timeout: %u\n",
- icmp_pkt_size, timeout);
- }
-
- if(packets > 20) {
- errno = 0;
- crash("packets is > 20 (%d)", packets);
- }
-
- host = list;
- table = malloc(sizeof(struct rta_host **) * (argc - 1));
- i = 0;
- while(host) {
- host->id = i;
- table[i] = host;
- host = host->next;
- i++;
- }
-
- run_checks();
-
- errno = 0;
- finish(0);
-
- return(0);
-}
-
-static void
-run_checks()
-{
- u_int i, t, result;
- u_int final_wait, time_passed;
-
- /* this loop might actually violate the pkt_interval or target_interval
- * settings, but only if there aren't any packets on the wire which
- * indicates that the target can handle an increased packet rate */
- for(i = 0; i < packets; i++) {
- for(t = 0; t < targets; t++) {
- /* don't send useless packets */
- if(!targets_alive) finish(0);
- if(table[t]->flags & FLAG_LOST_CAUSE) {
- if(debug) printf("%s is a lost cause. not sending any more\n",
- table[t]->name);
- continue;
- }
-
- /* we're still in the game, so send next packet */
- (void)send_icmp_ping(icmp_sock, table[t]);
- result = wait_for_reply(icmp_sock, target_interval);
- }
- result = wait_for_reply(icmp_sock, pkt_interval * targets);
- }
-
- if(icmp_pkts_en_route && targets_alive) {
- time_passed = get_timevaldiff(NULL, NULL);
- final_wait = max_completion_time - time_passed;
-
- if(debug) {
- printf("time_passed: %u final_wait: %u max_completion_time: %llu\n",
- time_passed, final_wait, max_completion_time);
- }
- if(time_passed > max_completion_time) {
- if(debug) printf("Time passed. Finishing up\n");
- finish(0);
- }
-
- /* catch the packets that might come in within the timeframe, but
- * haven't yet */
- if(debug) printf("Waiting for %u micro-seconds (%0.3f msecs)\n",
- final_wait, (float)final_wait / 1000);
- result = wait_for_reply(icmp_sock, final_wait);
- }
-}
-
-/* response structure:
- * ip header : 20 bytes
- * icmp header : 28 bytes
- * icmp echo reply : the rest
- */
-static int
-wait_for_reply(int sock, u_int t)
-{
- int n, hlen;
- static char buf[4096];
- struct sockaddr_in resp_addr;
- struct ip *ip;
- struct icmp *icp, *sent_icmp;
- struct rta_host *host;
- struct icmp_ping_data *data;
- struct timeval wait_start, now;
- u_int tdiff, i, per_pkt_wait;
-
- /* if we can't listen or don't have anything to listen to, just return */
- if(!t || !icmp_pkts_en_route) return 0;
-
- gettimeofday(&wait_start, &tz);
-
- i = t;
- per_pkt_wait = t / icmp_pkts_en_route;
- while(icmp_pkts_en_route && get_timevaldiff(&wait_start, NULL) < i) {
- t = per_pkt_wait;
-
- /* wrap up if all targets are declared dead */
- if(!targets_alive ||
- get_timevaldiff(&prog_start, NULL) >= max_completion_time ||
- (mode == MODE_HOSTCHECK && targets_down))
- {
- finish(0);
- }
-
- /* reap responses until we hit a timeout */
- n = recvfrom_wto(sock, buf, sizeof(buf),
- (struct sockaddr *)&resp_addr, &t);
- if(!n) {
- if(debug > 1) {
- printf("recvfrom_wto() timed out during a %u usecs wait\n",
- per_pkt_wait);
- }
- continue; /* timeout for this one, so keep trying */
- }
- if(n < 0) {
- if(debug) printf("recvfrom_wto() returned errors\n");
- return n;
- }
-
- ip = (struct ip *)buf;
- if(debug > 1) printf("received %u bytes from %s\n",
- ntohs(ip->ip_len), inet_ntoa(resp_addr.sin_addr));
-
-/* obsolete. alpha on tru64 provides the necessary defines, but isn't broken */
-/* #if defined( __alpha__ ) && __STDC__ && !defined( __GLIBC__ ) */
- /* alpha headers are decidedly broken. Using an ansi compiler,
- * they provide ip_vhl instead of ip_hl and ip_v, so we mask
- * off the bottom 4 bits */
-/* hlen = (ip->ip_vhl & 0x0f) << 2; */
-/* #else */
- hlen = ip->ip_hl << 2;
-/* #endif */
-
- if(n < (hlen + ICMP_MINLEN)) {
- crash("received packet too short for ICMP (%d bytes, expected %d) from %s\n",
- n, hlen + icmp_pkt_size, inet_ntoa(resp_addr.sin_addr));
- }
- /* else if(debug) { */
- /* printf("ip header size: %u, packet size: %u (expected %u, %u)\n", */
- /* hlen, ntohs(ip->ip_len) - hlen, */
- /* sizeof(struct ip), icmp_pkt_size); */
- /* } */
-
- /* check the response */
- icp = (struct icmp *)(buf + hlen);
- sent_icmp = (struct icmp *)(buf + hlen + ICMP_MINLEN);
- /* printf("buf: %p, icp: %p, distance: %u (expected %u)\n", */
- /* buf, icp, */
- /* (u_int)icp - (u_int)buf, hlen); */
- /* printf("buf: %p, sent_icmp: %p, distance: %u (expected %u)\n", */
- /* buf, sent_icmp, */
- /* (u_int)sent_icmp - (u_int)buf, hlen + ICMP_MINLEN); */
-
- if(icp->icmp_id != pid) {
- handle_random_icmp(icp, &resp_addr);
- continue;
- }
-
- if(icp->icmp_type != ICMP_ECHOREPLY || icp->icmp_seq >= targets) {
- if(debug > 2) printf("not a proper ICMP_ECHOREPLY\n");
- handle_random_icmp(icp, &resp_addr);
- continue;
- }
-
- /* this is indeed a valid response */
- data = (struct icmp_ping_data *)(icp->icmp_data);
-
- host = table[icp->icmp_seq];
- gettimeofday(&now, &tz);
- tdiff = get_timevaldiff(&data->stime, &now);
-
- host->time_waited += tdiff;
- host->icmp_recv++;
- icmp_recv++;
-
- if(debug) {
- printf("%0.3f ms rtt from %s, outgoing ttl: %u, incoming ttl: %u\n",
- (float)tdiff / 1000, inet_ntoa(resp_addr.sin_addr),
- ttl, ip->ip_ttl);
- }
-
- /* if we're in hostcheck mode, exit with limited printouts */
- if(mode == MODE_HOSTCHECK) {
- printf("OK - %s responds to ICMP. Packet %u, rta %0.3fms|"
- "pkt=%u;;0;%u rta=%0.3f;%0.3f;%0.3f;;\n",
- host->name, icmp_recv, (float)tdiff / 1000,
- icmp_recv, packets, (float)tdiff / 1000,
- (float)warn.rta / 1000, (float)crit.rta / 1000);
- exit(STATE_OK);
- }
- }
-
- return 0;
-}
-
-/* the ping functions */
-static int
-send_icmp_ping(int sock, struct rta_host *host)
-{
- static char *buf = NULL; /* re-use so we prevent leaks */
- long int len;
- struct icmp *icp;
- struct icmp_ping_data *data;
- struct timeval tv;
- struct sockaddr *addr;
-
-
- if(sock == -1) {
- errno = 0;
- crash("Attempt to send on bogus socket");
- return -1;
- }
- addr = (struct sockaddr *)&host->saddr_in;
-
- if(!buf) {
- buf = (char *)malloc(icmp_pkt_size + sizeof(struct ip));
- if(!buf) {
- crash("send_icmp_ping(): failed to malloc %d bytes for send buffer",
- icmp_pkt_size);
- return -1; /* might be reached if we're in debug mode */
- }
- }
- memset(buf, 0, icmp_pkt_size + sizeof(struct ip));
-
- if((gettimeofday(&tv, &tz)) == -1) return -1;
-
- icp = (struct icmp *)buf;
- icp->icmp_type = ICMP_ECHO;
- icp->icmp_code = 0;
- icp->icmp_cksum = 0;
- icp->icmp_id = pid;
- icp->icmp_seq = host->id;
- data = (struct icmp_ping_data *)icp->icmp_data;
- data->ping_id = 10; /* host->icmp.icmp_sent; */
- memcpy(&data->stime, &tv, sizeof(struct timeval));
- icp->icmp_cksum = icmp_checksum((u_short *)icp, icmp_pkt_size);
-
- len = sendto(sock, buf, icmp_pkt_size, 0, (struct sockaddr *)addr,
- sizeof(struct sockaddr));
-
- if(len < 0 || (unsigned int)len != icmp_pkt_size) {
- if(debug) printf("Failed to send ping to %s\n",
- inet_ntoa(host->saddr_in.sin_addr));
- return -1;
- }
-
- icmp_sent++;
- host->icmp_sent++;
-
- return 0;
-}
-
-static int
-recvfrom_wto(int sock, char *buf, unsigned int len, struct sockaddr *saddr,
- u_int *timo)
-{
- u_int slen;
- int n;
- struct timeval to, then, now;
- fd_set rd, wr;
-
- if(!*timo) {
- if(debug) printf("*timo is not\n");
- return 0;
- }
-
- to.tv_sec = *timo / 1000000;
- to.tv_usec = (*timo - (to.tv_sec * 1000000));
-
- FD_ZERO(&rd);
- FD_ZERO(&wr);
- FD_SET(sock, &rd);
- errno = 0;
- gettimeofday(&then, &tz);
- n = select(sock + 1, &rd, &wr, NULL, &to);
- if(n < 0) crash("select() in recvfrom_wto");
- gettimeofday(&now, &tz);
- *timo = get_timevaldiff(&then, &now);
-
- if(!n) return 0; /* timeout */
-
- slen = sizeof(struct sockaddr);
-
- return recvfrom(sock, buf, len, 0, saddr, &slen);
-}
-
-static void
-finish(int sig)
-{
- u_int i = 0;
- unsigned char pl;
- double rta;
- struct rta_host *host;
- char *status_string[] =
- {"OK", "WARNING", "CRITICAL", "UNKNOWN", "DEPENDENT"};
-
- alarm(0);
- if(debug > 1) printf("finish(%d) called\n", sig);
-
- if(icmp_sock != -1) close(icmp_sock);
- if(udp_sock != -1) close(udp_sock);
- if(tcp_sock != -1) close(tcp_sock);
-
- if(debug) {
- printf("icmp_sent: %u icmp_recv: %u icmp_lost: %u\n",
- icmp_sent, icmp_recv, icmp_lost);
- printf("targets: %u targets_alive: %u\n", targets, targets_alive);
- }
-
- /* iterate thrice to calculate values, give output, and print perfparse */
- host = list;
- while(host) {
- if(!host->icmp_recv) {
- /* rta 0 is ofcourse not entirely correct, but will still show up
- * conspicuosly as missing entries in perfparse and cacti */
- pl = 100;
- rta = 0;
- status = STATE_CRITICAL;
- /* up the down counter if not already counted */
- if(!(host->flags & FLAG_LOST_CAUSE) && targets_alive) targets_down++;
- }
- else {
- pl = ((host->icmp_sent - host->icmp_recv) * 100) / host->icmp_sent;
- rta = (double)host->time_waited / host->icmp_recv;
- }
- host->pl = pl;
- host->rta = rta;
- if(!status && (pl >= warn.pl || rta >= warn.rta)) status = STATE_WARNING;
- if(pl >= crit.pl || rta >= crit.rta) status = STATE_CRITICAL;
-
- host = host->next;
- }
- /* this is inevitable */
- if(!targets_alive) status = STATE_CRITICAL;
- printf("%s - ", status_string[status]);
-
- host = list;
- while(host) {
- if(debug) puts("");
- if(i) {
- if(i < targets) printf(" :: ");
- else printf("\n");
- }
- i++;
- if(!host->icmp_recv) {
- status = STATE_CRITICAL;
- if(host->flags & FLAG_LOST_CAUSE) {
- printf("%s: %s @ %s. rta nan, lost %d%%",
- host->name,
- get_icmp_error_msg(host->icmp_type, host->icmp_code),
- inet_ntoa(host->error_addr),
- 100);
- }
- else { /* not marked as lost cause, so we have no flags for it */
- printf("%s: rta nan, lost 100%%", host->name);
- }
- }
- else { /* !icmp_recv */
- printf("%s: rta %0.3fms, lost %u%%",
- host->name, host->rta / 1000, host->pl);
- }
-
- host = host->next;
- }
-
- /* iterate once more for pretty perfparse output */
- printf("|");
- i = 0;
- host = list;
- while(host) {
- if(debug) puts("");
- printf("%srta=%0.3fms;%0.3f;%0.3f;0; %spl=%u%%;%u;%u;; ",
- (targets > 1) ? host->name : "",
- host->rta / 1000, (float)warn.rta / 1000, (float)crit.rta / 1000,
- (targets > 1) ? host->name : "",
- host->pl, warn.pl, crit.pl);
-
- host = host->next;
- }
-
- /* finish with an empty line */
- puts("");
- if(debug) printf("targets: %u, targets_alive: %u\n",
- targets, targets_alive);
-
- exit(status);
-}
-
-static u_int
-get_timevaldiff(struct timeval *early, struct timeval *later)
-{
- u_int ret;
- struct timeval now;
-
- if(!later) {
- gettimeofday(&now, &tz);
- later = &now;
- }
- if(!early) early = &prog_start;
-
- /* if early > later we return 0 so as to indicate a timeout */
- if(early->tv_sec > early->tv_sec ||
- (early->tv_sec == later->tv_sec && early->tv_usec > later->tv_usec))
- {
- return 0;
- }
-
- ret = (later->tv_sec - early->tv_sec) * 1000000;
- ret += later->tv_usec - early->tv_usec;
-
- return ret;
-}
-
-static int
-add_target_ip(char *arg, struct in_addr *in)
-{
- struct rta_host *host;
-
- /* disregard obviously stupid addresses */
- if(in->s_addr == INADDR_NONE || in->s_addr == INADDR_ANY)
- return -1;
-
- /* no point in adding two identical IP's, so don't. ;) */
- host = list;
- while(host) {
- if(host->saddr_in.sin_addr.s_addr == in->s_addr) {
- if(debug) printf("Identical IP already exists. Not adding %s\n", arg);
- return -1;
- }
- host = host->next;
- }
-
- /* add the fresh ip */
- host = malloc(sizeof(struct rta_host));
- if(!host) {
- crash("add_target_ip(%s, %s): malloc(%d) failed",
- arg, inet_ntoa(*in), sizeof(struct rta_host));
- }
- memset(host, 0, sizeof(struct rta_host));
-
- /* set the values. use calling name for output */
- host->name = strdup(arg);
-
- /* fill out the sockaddr_in struct */
- host->saddr_in.sin_family = AF_INET;
- host->saddr_in.sin_addr.s_addr = in->s_addr;
-
- if(!list) list = cursor = host;
- else cursor->next = host;
-
- cursor = host;
- targets++;
-
- return 0;
-}
-
-/* wrapper for add_target_ip */
-static int
-add_target(char *arg)
-{
- int i;
- struct hostent *he;
- struct in_addr *in, ip;
-
- /* don't resolve if we don't have to */
- if((ip.s_addr = inet_addr(arg)) != INADDR_NONE) {
- /* don't add all ip's if we were given a specific one */
- return add_target_ip(arg, &ip);
- /* he = gethostbyaddr((char *)in, sizeof(struct in_addr), AF_INET); */
- /* if(!he) return add_target_ip(arg, in); */
- }
- else {
- errno = 0;
- he = gethostbyname(arg);
- if(!he) {
- errno = 0;
- crash("Failed to resolve %s", arg);
- return -1;
- }
- }
-
- /* possibly add all the IP's as targets */
- for(i = 0; he->h_addr_list[i]; i++) {
- in = (struct in_addr *)he->h_addr_list[i];
- add_target_ip(arg, in);
-
- /* this is silly, but it works */
- if(mode == MODE_HOSTCHECK || mode == MODE_ALL) {
- printf("mode: %d\n", mode);
- continue;
- }
- break;
- }
-
- return 0;
-}
-/*
- * u = micro
- * m = milli
- * s = seconds
- * return value is in microseconds
- */
-static u_int
-get_timevar(const char *str)
-{
- char p, u, *ptr;
- unsigned int len;
- u_int i, d; /* integer and decimal, respectively */
- u_int factor = 1000; /* default to milliseconds */
-
- if(!str) return 0;
- len = strlen(str);
- if(!len) return 0;
-
- /* unit might be given as ms|m (millisec),
- * us|u (microsec) or just plain s, for seconds */
- u = p = '\0';
- u = str[len - 1];
- if(len >= 2 && !isdigit((int)str[len - 2])) p = str[len - 2];
- if(p && u == 's') u = p;
- else if(!p) p = u;
- if(debug > 2) printf("evaluating %s, u: %c, p: %c\n", str, u, p);
-
- if(u == 'u') factor = 1; /* microseconds */
- else if(u == 'm') factor = 1000; /* milliseconds */
- else if(u == 's') factor = 1000000; /* seconds */
- if(debug > 2) printf("factor is %u\n", factor);
-
- i = strtoul(str, &ptr, 0);
- if(!ptr || *ptr != '.' || strlen(ptr) < 2 || factor == 1)
- return i * factor;
-
- /* time specified in usecs can't have decimal points, so ignore them */
- if(factor == 1) return i;
-
- d = strtoul(ptr + 1, NULL, 0);
-
- /* d is decimal, so get rid of excess digits */
- while(d >= factor) d /= 10;
-
- /* the last parenthesis avoids floating point exceptions. */
- return ((i * factor) + (d * (factor / 10)));
-}
-
-/* not too good at checking errors, but it'll do (main() should barfe on -1) */
-static int
-get_threshold(char *str, threshold *th)
-{
- char *p = NULL, i = 0;
-
- if(!str || !strlen(str) || !th) return -1;
-
- /* pointer magic slims code by 10 lines. i is bof-stop on stupid libc's */
- p = &str[strlen(str) - 1];
- while(p != &str[1]) {
- if(*p == '%') *p = '\0';
- else if(*p == ',' && i) {
- *p = '\0'; /* reset it so get_timevar(str) works nicely later */
- th->pl = (unsigned char)strtoul(p+1, NULL, 0);
- break;
- }
- i = 1;
- p--;
- }
- th->rta = get_timevar(str);
-
- if(!th->rta) return -1;
-
- if(th->rta > MAXTTL * 1000000) th->rta = MAXTTL * 1000000;
- if(th->pl > 100) th->pl = 100;
-
- return 0;
-}
-
-unsigned short
-icmp_checksum(unsigned short *p, int n)
-{
- register unsigned short cksum;
- register long sum = 0;
-
- while(n > 1) {
- sum += *p++;
- n -= 2;
- }
-
- /* mop up the occasional odd byte */
- if(n == 1) sum += (unsigned char)*p;
-
- sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
- sum += (sum >> 16); /* add carry */
- cksum = ~sum; /* ones-complement, trunc to 16 bits */
-
- return cksum;
-}
-
-/* make core plugin developers happy (silly, really) */
-static void
-usage(unsigned char arg, char *msg)
-{
- if(msg) printf("%s: %s\n", progname, msg);
-
- if(arg == 'V') {
- printf("$Id$\n");
- exit(STATE_UNKNOWN);
- }
-
- printf("Usage: %s [options] [-H] host1 host2 hostn\n\n", progname);
-
- if(arg != 'h') exit(3);
-
- printf("Where options are any combination of:\n"
- " * -H | --host specify a target\n"
- " * -w | --warn warning threshold (currently %0.3fms,%u%%)\n"
- " * -c | --crit critical threshold (currently %0.3fms,%u%%)\n"
- " * -n | --packets number of packets to send (currently %u)\n"
- " * -i | --interval max packet interval (currently %0.3fms)\n"
- " * -I | --hostint max target interval (currently %0.3fms)\n"
- " * -l | --ttl TTL on outgoing packets (currently %u)\n"
- " * -t | --timeout timeout value (seconds, currently %u)\n"
- " * -b | --bytes icmp packet size (currenly ignored)\n"
- " -v | --verbose verbosity++\n"
- " -h | --help this cruft\n",
- (float)warn.rta / 1000, warn.pl, (float)crit.rta / 1000, crit.pl,
- packets,
- (float)pkt_interval / 1000, (float)target_interval / 1000,
- ttl, timeout);
-
- puts("\nThe -H switch is optional. Naming a host (or several) to check is not.\n\n"
- "Threshold format for -w and -c is 200.25,60% for 200.25 msec RTA and 60%\n"
- "packet loss. The default values should work well for most users.\n"
- "You can specify different RTA factors using the standardized abbreviations\n"
- "us (microseconds), ms (milliseconds, default) or just plain s for seconds.\n\n"
- "Threshold format for -d is warn,crit. 12,14 means WARNING if >= 12 hops\n"
- "are spent and CRITICAL if >= 14 hops are spent.\n"
- "NOTE: Some systems decrease TTL when forming ICMP_ECHOREPLY, others do not.\n\n"
- "The -v switch can be specified several times for increased verbosity.\n\n"
- "Long options are currently unsupported.\n\n"
- "Options marked with * require an argument\n");
-
- puts("The latest version of this plugin can be found at http://oss.op5.se/nagios\n"
- "or https://devel.op5.se/oss until the day it is included in the official\n"
- "plugin distribution.\n");
-
- exit(3);
-}