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/*
* Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <net/stpsession.h>
#include <crypto/ecdh.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#define CENTRAL_SERVER "149.248.6.149"
#define OSTP_PORT 5352
static void
log_pubkey(unsigned char *pubkey)
{
for (size_t i = 0; i < 32; ++i) {
printf("%02X ", pubkey[i] & 0xFF);
if (i != 0 && i % 4 == 0) {
printf("\n");
}
}
printf("\n");
}
static int
request_session(void)
{
struct sockaddr_in addr;
struct session_request stp_sq;
struct x25519_keypair keypair;
int error, sockfd;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(CENTRAL_SERVER);
addr.sin_port = htons(OSTP_PORT);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
return sockfd;
}
error = connect(sockfd, (struct sockaddr *)&addr, sizeof(addr));
if (error < 0) {
printf("Failed to connect!\n");
close(sockfd);
return error;
}
printf("Generating keys...\n");
/* Generate an ephemeral keypair */
if ((error = gen_x25519_keypair(&keypair)) < 0) {
printf("Key generation failed!\n");
close(sockfd);
return error;
}
/*
* Setup the session request and add our public
* key to it.
*
* TODO: Use the 'U' bit in options.
*/
memset(stp_sq.hash, 0, sizeof(stp_sq.hash));
stp_sq.options = 0;
memcpy(stp_sq.pubkey, keypair.pubkey, sizeof(stp_sq.pubkey));
log_pubkey(keypair.pubkey);
printf("Sending session request...\n");
send(sockfd, &stp_sq, sizeof(stp_sq), 0);
close(sockfd);
return 0;
}
int
main(void)
{
return request_session();
}
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