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/* opennhrpctl.c - OpenNHRP command line control utility
*
* Copyright (C) 2007 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 or later as
* published by the Free Software Foundation.
*
* See http://www.gnu.org/ for details.
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/un.h>
#include <sys/socket.h>
static int admin_init(const char *opennhrp_socket)
{
struct sockaddr_un sun;
int fd;
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_UNIX;
strncpy(sun.sun_path, opennhrp_socket, sizeof(sun.sun_path));
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return -1;
if (connect(fd, (struct sockaddr *) &sun, sizeof(sun)) < 0) {
close(fd);
return -1;
}
return fd;
}
static void admin_close(int fd)
{
close(fd);
}
static int admin_send(int fd, const char *str)
{
int len = strlen(str);
if (write(fd, str, len) != len)
return -1;
shutdown(fd, SHUT_WR);
return 0;
}
static int admin_receive(int fd)
{
char msg[512];
size_t len;
while ((len = recv(fd, msg, sizeof(msg), 0)) > 0) {
if (write(fileno(stdout), msg, len) != len)
return -1;
}
if (len < 0)
return -1;
return 0;
}
static int usage(const char *prog)
{
fprintf(stderr, "usage: %s [-a admin-socket] <command>\n", prog);
return 1;
}
int main(int argc, char **argv)
{
const char *socket = OPENNHRP_ADMIN_SOCKET;
char cmd[1024] = "", *pos = cmd;
int i, fd;
for (i = 1; i < argc; i++) {
if (strlen(argv[i]) != 2 || argv[i][0] != '-') {
pos += snprintf(pos, &cmd[sizeof(cmd)-1]-pos,
" %s\n", argv[i]) - 1;
continue;
}
switch (argv[i][1]) {
case 'a':
if (++i >= argc)
return usage(argv[0]);
socket = argv[i];
break;
default:
return usage(argv[0]);
}
}
if (cmd == pos)
return usage(argv[0]);
fd = admin_init(socket);
if (fd < 0) {
fprintf(stderr,
"Failed to connect to opennhrp daemon [%s]: %s.\n\n",
socket, strerror(errno));
return 1;
}
if (admin_send(fd, &cmd[1]) < 0 ||
admin_receive(fd) < 0) {
fprintf(stderr, "Failed to send request: %s.\n",
strerror(errno));
return 2;
}
admin_close(fd);
return 0;
}
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