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/* Stroke for charon is the counterpart to whack from pluto
* Copyright (C) 2006 Martin Willi - Hochschule fuer Technik Rapperswil
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include <sys/un.h>
#include <linux/stddef.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <threads/stroke.h>
static char* push_string(stroke_msg_t **strm, char *string)
{
stroke_msg_t *stroke_msg;
size_t string_length;
if (string == NULL)
{
return NULL;
}
stroke_msg = *strm;
string_length = strlen(string) + 1;
stroke_msg->length += string_length;
stroke_msg = realloc(stroke_msg, stroke_msg->length);
strcpy((char*)stroke_msg + stroke_msg->length - string_length, string);
*strm = stroke_msg;
return (char*)(u_int)stroke_msg->length - string_length;
}
static int send_stroke_msg (stroke_msg_t *msg)
{
struct sockaddr_un ctl_addr = { AF_UNIX, STROKE_SOCKET };
int sock;
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock < 0)
{
printf("Opening unix socket %s: %s\n", STROKE_SOCKET, strerror(errno));
return -1;
}
if (connect(sock, (struct sockaddr *)&ctl_addr,
offsetof(struct sockaddr_un, sun_path) + strlen(ctl_addr.sun_path)) < 0)
{
printf("Connect to socket failed: %s\n", strerror(errno));
close(sock);
return -1;
}
if (dup2(sock, 1) != 1)
{
printf("Unable to redirect socket output: %s\n", strerror(errno));
}
/* send message */
if (write(sock, msg, msg->length) != msg->length)
{
printf("writing to socket failed: %s\n", strerror(errno));
close(sock);
return -1;
}
close(sock);
return 0;
}
static int add_connection(char *name,
char *my_id, char *other_id,
char *my_addr, char *other_addr,
char *my_net, char *other_net,
u_int8_t my_netmask, u_int8_t other_netmask)
{
stroke_msg_t *msg = malloc(sizeof(stroke_msg_t));
int res;
msg->length = sizeof(stroke_msg_t);
msg->type = STR_ADD_CONN;
msg->add_conn.name = push_string(&msg, name);
msg->add_conn.me.id = push_string(&msg, my_id);
msg->add_conn.me.address = push_string(&msg, my_addr);
msg->add_conn.me.subnet = push_string(&msg, my_net);
msg->add_conn.me.subnet_mask = my_netmask;
msg->add_conn.other.id = push_string(&msg, other_id);
msg->add_conn.other.address = push_string(&msg, other_addr);
msg->add_conn.other.subnet = push_string(&msg, other_net);
msg->add_conn.other.subnet_mask = other_netmask;
res = send_stroke_msg(msg);
free(msg);
return res;
}
static int initiate_connection(char *name)
{
stroke_msg_t *msg = malloc(sizeof(stroke_msg_t));
int res;
msg->length = sizeof(stroke_msg_t);
msg->type = STR_INITIATE;
msg->initiate.name = push_string(&msg, name);
res = send_stroke_msg(msg);
free(msg);
return res;
}
int main(int argc, char *argv[])
{
add_connection("alice", NULL, NULL,
"192.168.0.1", "192.168.0.2",
"10.1.0.0", "10.2.0.0", 16, 16);
add_connection("bob", "192.168.0.2", "192.168.0.1",
"192.168.0.2", "192.168.0.1",
"10.2.0.0", "10.1.0.0", 16, 16);
if (argc == 2)
{
initiate_connection(argv[1]);
}
return 0;
}
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