|
|
@@ -0,0 +1,1061 @@
|
|
|
+/******************************************************************************
|
|
|
+*
|
|
|
+* 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.
|
|
|
+*
|
|
|
+*****************************************************************************/
|
|
|
+
|
|
|
+#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>
|
|
|
+#else
|
|
|
+#include <netinet/if_ether.h>
|
|
|
+#include <sys/sysctl.h>
|
|
|
+#include <net/if_dl.h>
|
|
|
+#endif
|
|
|
+
|
|
|
+const char *progname = "check_dhcp";
|
|
|
+
|
|
|
+/*#define DEBUG*/
|
|
|
+#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;
|
|
|
+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;
|
|
|
+
|
|
|
+ if(process_arguments(argc,argv)!=OK){
|
|
|
+ /*usage("Invalid command arguments supplied\n");*/
|
|
|
+ printf("Invalid command arguments supplied\n");
|
|
|
+ exit(STATE_UNKNOWN);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ /* 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){
|
|
|
+#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);
|
|
|
+#else
|
|
|
+ /* Code from getmac.c posted at http://lists.freebsd.org/pipermail/freebsd-hackers/2004-June/007415.html
|
|
|
+ * by Alecs King based on Unix Network programming Ch 17
|
|
|
+ */
|
|
|
+
|
|
|
+ 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) {
|
|
|
+ perror("if_nametoindex error");
|
|
|
+ exit(2);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
|
|
|
+ perror("sysctl 1 error");
|
|
|
+ exit(3);
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((buf = malloc(len)) == NULL) {
|
|
|
+ perror("malloc error");
|
|
|
+ exit(4);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
|
|
|
+ perror("sysctl 2 error");
|
|
|
+ exit(5);
|
|
|
+ }
|
|
|
+
|
|
|
+ ifm = (struct if_msghdr *)buf;
|
|
|
+ sdl = (struct sockaddr_dl *)(ifm + 1);
|
|
|
+ ptr = (unsigned char *)LLADDR(sdl);
|
|
|
+ memcpy(&client_hardware_address[0], ptr, 6) ;
|
|
|
+#endif
|
|
|
+
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Hardware address: %02x:%02x:%02x:",client_hardware_address[0],client_hardware_address[1],client_hardware_address[2]);
|
|
|
+ printf("%02x:",client_hardware_address[3]);
|
|
|
+ printf("%02x:%02x\n",client_hardware_address[4],client_hardware_address[5]);
|
|
|
+ printf("\n");
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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));
|
|
|
+
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ 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));
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* send the DHCPDISCOVER packet out */
|
|
|
+ send_dhcp_packet(&discover_packet,sizeof(discover_packet),sock,&sockaddr_broadcast);
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("\n\n");
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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;
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("\n\n");
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Result=ERROR\n");
|
|
|
+#endif
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ else{
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Result=OK\n");
|
|
|
+#endif
|
|
|
+ responses++;
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ 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));
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* 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){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("DHCPOFFER XID (%lu) did not match DHCPDISCOVER XID (%lu) - ignoring packet\n",ntohl(offer_packet.xid),packet_xid);
|
|
|
+#endif
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* check hardware address */
|
|
|
+ result=OK;
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("DHCPOFFER chaddr: ");
|
|
|
+#endif
|
|
|
+ for(x=0;x<ETHERNET_HARDWARE_ADDRESS_LENGTH;x++){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("%02X",(unsigned char)offer_packet.chaddr[x]);
|
|
|
+#endif
|
|
|
+ if(offer_packet.chaddr[x]!=client_hardware_address[x]){
|
|
|
+ result=ERROR;
|
|
|
+ }
|
|
|
+ }
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("\n");
|
|
|
+#endif
|
|
|
+ if(result==ERROR){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("DHCPOFFER hardware address did not match our own - ignoring packet\n");
|
|
|
+#endif
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ 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));
|
|
|
+#endif
|
|
|
+
|
|
|
+ add_dhcp_offer(source.sin_addr,&offer_packet);
|
|
|
+
|
|
|
+ valid_responses++;
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Total responses seen on the wire: %d\n",responses);
|
|
|
+ printf("Valid responses for this machine: %d\n",valid_responses);
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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));
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("send_dhcp_packet result: %d\n",result);
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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)){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("No (more) data received\n");
|
|
|
+#endif
|
|
|
+ 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);
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("recv_result_1: %d\n",recv_result);
|
|
|
+#endif
|
|
|
+ recv_result=recvfrom(sock,(char *)buffer,buffer_size,0,(struct sockaddr *)&source_address,&address_size);
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("recv_result_2: %d\n",recv_result);
|
|
|
+#endif
|
|
|
+
|
|
|
+ if(recv_result==-1){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("recvfrom() failed, ");
|
|
|
+ printf("errno: (%d) -> %s\n",errno,strerror(errno));
|
|
|
+#endif
|
|
|
+ return ERROR;
|
|
|
+ }
|
|
|
+ else{
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("receive_dhcp_packet() result: %d\n",recv_result);
|
|
|
+ printf("receive_dhcp_packet() source: %s\n",inet_ntoa(source_address.sin_addr));
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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);
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("DHCP socket: %d\n",sock);
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* 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++;
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Requested server address: %s\n",inet_ntoa(new_server->server_address));
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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++];
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Option: %d (0x%02X)\n",option_type,option_length);
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* get option data */
|
|
|
+ if(option_type==DHCP_OPTION_LEASE_TIME)
|
|
|
+ dhcp_lease_time=ntohl(*((u_int32_t *)&offer_packet->options[x]));
|
|
|
+ if(option_type==DHCP_OPTION_RENEWAL_TIME)
|
|
|
+ dhcp_renewal_time=ntohl(*((u_int32_t *)&offer_packet->options[x]));
|
|
|
+ if(option_type==DHCP_OPTION_REBINDING_TIME)
|
|
|
+ dhcp_rebinding_time=ntohl(*((u_int32_t *)&offer_packet->options[x]));
|
|
|
+
|
|
|
+ /* skip option data we're ignoring */
|
|
|
+ else
|
|
|
+ for(y=0;y<option_length;y++,x++);
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ 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);
|
|
|
+#endif
|
|
|
+
|
|
|
+ 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;
|
|
|
+
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("Added offer from server @ %s",inet_ntoa(new_offer->server_address));
|
|
|
+ printf(" of IP address %s\n",inet_ntoa(new_offer->offered_address));
|
|
|
+#endif
|
|
|
+
|
|
|
+ /* 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))){
|
|
|
+#ifdef DEBUG
|
|
|
+ printf("DHCP Server Match: Offerer=%s",inet_ntoa(temp_offer->server_address));
|
|
|
+ printf(" Requested=%s\n",inet_ntoa(temp_server->server_address));
|
|
|
+#endif
|
|
|
+ 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;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/* print usage help */
|
|
|
+void print_help(void){
|
|
|
+
|
|
|
+ /*print_revision(progname,"$Revision$");*/
|
|
|
+
|
|
|
+ printf("Copyright (c) 2001-2004 Ethan Galstad (nagios@nagios.org)\n\n");
|
|
|
+ printf("This plugin tests the availability of DHCP servers on a network.\n\n");
|
|
|
+
|
|
|
+ print_usage();
|
|
|
+
|
|
|
+ printf
|
|
|
+ ("\nOptions:\n"
|
|
|
+ " -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\n"
|
|
|
+ );
|
|
|
+
|
|
|
+ /*support();*/
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+/* prints usage information */
|
|
|
+void print_usage(void){
|
|
|
+
|
|
|
+ printf("Usage: %s [-s serverip] [-r requestedip] [-t timeout] [-i interface]\n",progname);
|
|
|
+ printf(" %s --help\n",progname);
|
|
|
+ printf(" %s --version\n",progname);
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+/* 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 '?': /* help */
|
|
|
+
|
|
|
+ /*usage("Invalid argument\n");*/
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return i;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+int validate_arguments(void){
|
|
|
+
|
|
|
+ return OK;
|
|
|
+ }
|
|
|
+
|
Stanley Hopcroft