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/*
Copyright (C) 2000-2015 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/un.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(EXIT_FAILURE);
}
static void alarm_handler(int dummy)
{
;
}
static void usage(void)
{
printf("usage: penctl host:port command\n");
exit(0);
}
static int open_unix_socket(char *path)
{
int n, fd;
struct sockaddr_un serv_addr;
fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (fd < 0) error("error opening socket");
memset(&serv_addr, 0, sizeof serv_addr);
serv_addr.sun_family = AF_UNIX;
snprintf(serv_addr.sun_path, sizeof serv_addr.sun_path, "%s", path);
n = connect(fd, (struct sockaddr *)&serv_addr, sizeof serv_addr);
if (n == -1) {
error("error connecting to server");
}
return fd;
}
static int open_socket(char *addr, char *port)
{
int fd = -1;
struct addrinfo *ai;
struct addrinfo hints;
struct addrinfo *runp;
int n;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_ADDRCONFIG;
hints.ai_socktype = SOCK_STREAM;
n = getaddrinfo(addr, port, &hints, &ai);
if (n != 0) {
error("getaddrinfo: %s", gai_strerror(n));
}
runp = ai;
/* only using first result; should try all */
fd = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
if (fd < 0) error("error opening socket");
signal(SIGALRM, alarm_handler);
n = connect(fd, runp->ai_addr, runp->ai_addrlen);
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();
}
if (strchr(argv[1], '/')) {
fd = open_unix_socket(argv[1]);
} else {
n = 1+strlen(argv[1]); /* one for \0 */
if (n > sizeof b) error("Overlong arg '%s'", argv[1]);
snprintf(b, sizeof b, "%s", argv[1]);
/* We need the *last* : to allow such arguments as ::1:10080
if pen's control port is ipv6 localhost:10080 */
p = strrchr(b, ':');
if (p == NULL) error("no port given");
*p++ = '\0';
fd = open_socket(b, p);
}
n = 0;
for (i = 2; argv[i]; i++) {
for (p = argv[i]; *p; p++) {
if (n >= (sizeof b)-1) error("Overlong argument list");
b[n++] = *p;
}
b[n++] = ' ';
}
if (n >= (sizeof b)-1) error("Overlong argument list");
b[--n] = '\n'; /* replace last ' ' */
b[++n] = '\0'; /* terminate string */
n = write(fd, b, strlen(b));
if (n == -1) error("error writing to socket");
for (;;) {
n = read(fd, b, sizeof b);
if (n == 0) break;
if (n == -1) error("error reading from socket");
n = write(1, b, n);
if (n == -1) error("error writing to stdout");
}
close(fd);
return 0;
}
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