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/* $Id: main.c,v 0.10 1997/08/28 14:42:26 yoichi v0_70 $
*
* dhcpcd - DHCP client daemon -
* Copyright (C) 1996 - 1997 Yoichi Hariguchi <yoichi@fore.com>
*
* dhcpcd is an RFC2131 and RFC1541 compliant DHCP client daemon.
*
* This 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 <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <net/if.h>
#include <arpa/inet.h>
#include "if.h"
#include "dhcp.h"
#include "signal-handler.h"
#include "error-handler.h"
#include "daemon.h"
#include "client.h"
#include "memory.h"
#define DEFAULT_IF "eth0"
char *CommandFile = NULL; /* invoked command file name when dhcpcd
* succeeds in getting an IP address
*/
int BeRFC1541 = 0; /* default is InternetDraft mode */
char *Hostname = NULL; /* hostname in the DHCP msg for xmit */
static char VersionStr[] = "dhcpcd 0.70-karn\n";
void usage();
void
main(argc, argv)
int argc;
char *argv[];
{
char ifname[10]; /* interface name */
char pidfile[128]; /* file name in which pid is stored */
char *clientId = NULL; /* ptr to client identifier user specified */
int killFlag = 0; /* if 1: kill the running proc and exit */
DebugFlag = 0; /* default is NON debug mode */
srand((u_int)time(NULL));
signalSetup();
umask(0); /* clear umask */
classIDsetup(NULL); /* setup default class identifier */
/* option handling
*/
while ( *++argv ) {
if ( **argv == '-' ) {
switch ( argv[0][1] ) {
case 'c':
if ( *++argv == NULL ) {
usage();
}
if ( (CommandFile = malloc(strlen(*argv)+1)) == NULL ) {
usage();
}
strcpy(CommandFile, *argv);
break;
case 'd':
DebugFlag = 1;
break;
case 'h':
if ( *++argv == NULL ) {
usage();
}
Hostname = smalloc(strlen(*argv)+1);
strcpy(Hostname, *argv);
break;
case 'i':
if ( *++argv == NULL ) {
usage();
}
classIDsetup(*argv); /* overwrite class identifier */
break;
case 'I':
if ( *++argv == NULL ) {
usage();
}
clientId = *argv;
break;
case 'k':
killFlag = 1; /* kill running process and exit */
break;
case 'l':
++argv;
if ( *argv == NULL || **argv == '-' ) {
usage();
}
SuggestLeaseTime = atol(*argv);
break;
case 'r':
BeRFC1541 = 1; /* Be RFC1541 compliant */
break;
case 'v':
fflush(stdout);
fputs(VersionStr, stderr);
fflush(NULL);
exit(0);
default:
usage();
}
} else {
break;
}
}
if ( getuid() != 0 && geteuid() != 0 ) {
errQuit("Must be root");
}
if ( *argv ) {
strncpy(ifname, *argv, sizeof(ifname));
} else {
strncpy(ifname, DEFAULT_IF, sizeof(ifname));
}
if ( killFlag ) {
sprintf(pidfile, PIDFILE, ifname);
killCurProc(pidfile);
}
if ( !DebugFlag ) {
sprintf(pidfile, PIDFILE, ifname);
daemonInit(pidfile);
}
logOpen("dhcpcd", LOG_PID, LOG_LOCAL0);
ifReset(ifname); /* reset interface, 'Ifbuf' */
clientIDsetup(clientId, ifname);
dhcpMsgInit(ifname);
dhcpClient();
}
void
usage()
{
fflush(stdout);
fputs("Usage: dhcpcd [-c filename] [-d] [-i classIdentifier] [-I clientIdentifier] [-k] [-l leasetime] [ifname]\n",
stderr);
fflush(NULL);
exit(1);
}
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