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/*
Copyright (C) 2000-2002 Ulric Eriksson <ulric@siag.nu>
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, 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., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <signal.h>
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>
#include <time.h>
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#endif
#include <sys/wait.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <syslog.h>
#include <string.h>
#include "config.h"
static void error(char *fmt, ...)
{
char b[4096];
va_list ap;
va_start(ap, fmt);
vsnprintf(b, sizeof b, fmt, ap);
fprintf(stderr, "%s\n", b);
va_end(ap);
exit(1);
}
static void alarm_handler(int dummy)
{
;
}
static void usage(void)
{
printf("usage: penctl host:port command\n");
exit(0);
}
static int open_socket(char *addr, char *port)
{
int fd = -1;
struct sockaddr_in serv_addr;
struct hostent *h;
struct in_addr a;
struct servent *s;
int n, po;
h = gethostbyname(addr);
if (h == NULL) error("unknown or invalid address %s\n", addr);
memcpy(&a, h->h_addr, h->h_length);
s = getservbyname(port, "tcp");
if (s == NULL) po = atoi(port);
else po = ntohs(s->s_port);
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0) error("error opening socket");
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = a.s_addr;
serv_addr.sin_port = htons(po);
signal(SIGALRM, alarm_handler);
n = connect(fd, (struct sockaddr *)&serv_addr, sizeof serv_addr);
alarm(0);
if (n == -1) {
error("error connecting to server");
}
return fd;
}
int main(int argc, char **argv)
{
int i, fd, n;
char b[1024], *p;
if (argc < 3) {
usage();
}
n = 1+strlen(argv[1]); /* one for \0 */
if (n > sizeof b) error("Overlong arg '%s'", argv[1]);
strcpy(b, argv[1]);
p = strchr(b, ':');
if (p == NULL) error("no port given");
*p++ = '\0';
fd = open_socket(b, p);
n = 2+strlen(argv[2]); /* one for \n, one for \0 */
if (n > sizeof b) error("Overlong arg '%s'", argv[2]);
strcpy(b, argv[2]);
for (i = 3; argv[i]; i++) {
n = n+1+strlen(argv[i]);
if (n > sizeof b) error("Overlong arg '%s'", argv[i]);
strcat(b, " ");
strcat(b, argv[i]);
}
strcat(b, "\n");
write(fd, b, strlen(b));
for (;;) {
n = read(fd, b, sizeof b);
if (n == 0) break;
if (n == -1) error("error reading");
write(1, b, n);
}
close(fd);
return 0;
}
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