122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
/*
|
|
* Copyright 1998-2017 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
/*-
|
|
* A minimal program to serve an SSL connection.
|
|
* It uses blocking.
|
|
* saccept host:port
|
|
* host is the interface IP to use. If any interface, use *:port
|
|
* The default it *:4433
|
|
*
|
|
* cc -I../../include saccept.c -L../.. -lssl -lcrypto -ldl
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/ssl.h>
|
|
|
|
#define CERT_FILE "server.pem"
|
|
|
|
static volatile int done = 0;
|
|
|
|
void interrupt(int sig)
|
|
{
|
|
done = 1;
|
|
}
|
|
|
|
void sigsetup(void)
|
|
{
|
|
struct sigaction sa;
|
|
|
|
/*
|
|
* Catch at most once, and don't restart the accept system call.
|
|
*/
|
|
sa.sa_flags = SA_RESETHAND;
|
|
sa.sa_handler = interrupt;
|
|
sigemptyset(&sa.sa_mask);
|
|
sigaction(SIGINT, &sa, NULL);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
char *port = NULL;
|
|
BIO *in = NULL;
|
|
BIO *ssl_bio, *tmp;
|
|
SSL_CTX *ctx;
|
|
char buf[512];
|
|
int ret = EXIT_FAILURE, i;
|
|
|
|
if (argc <= 1)
|
|
port = "*:4433";
|
|
else
|
|
port = argv[1];
|
|
|
|
ctx = SSL_CTX_new(TLS_server_method());
|
|
if (!SSL_CTX_use_certificate_chain_file(ctx, CERT_FILE))
|
|
goto err;
|
|
if (!SSL_CTX_use_PrivateKey_file(ctx, CERT_FILE, SSL_FILETYPE_PEM))
|
|
goto err;
|
|
if (!SSL_CTX_check_private_key(ctx))
|
|
goto err;
|
|
|
|
/* Setup server side SSL bio */
|
|
ssl_bio = BIO_new_ssl(ctx, 0);
|
|
|
|
if ((in = BIO_new_accept(port)) == NULL)
|
|
goto err;
|
|
|
|
/*
|
|
* This means that when a new connection is accepted on 'in', The ssl_bio
|
|
* will be 'duplicated' and have the new socket BIO push into it.
|
|
* Basically it means the SSL BIO will be automatically setup
|
|
*/
|
|
BIO_set_accept_bios(in, ssl_bio);
|
|
|
|
/* Arrange to leave server loop on interrupt */
|
|
sigsetup();
|
|
|
|
again:
|
|
/*
|
|
* The first call will setup the accept socket, and the second will get a
|
|
* socket. In this loop, the first actual accept will occur in the
|
|
* BIO_read() function.
|
|
*/
|
|
|
|
if (BIO_do_accept(in) <= 0)
|
|
goto err;
|
|
|
|
while (!done) {
|
|
i = BIO_read(in, buf, 512);
|
|
if (i == 0) {
|
|
/*
|
|
* If we have finished, remove the underlying BIO stack so the
|
|
* next time we call any function for this BIO, it will attempt
|
|
* to do an accept
|
|
*/
|
|
printf("Done\n");
|
|
tmp = BIO_pop(in);
|
|
BIO_free_all(tmp);
|
|
goto again;
|
|
}
|
|
if (i < 0)
|
|
goto err;
|
|
fwrite(buf, 1, i, stdout);
|
|
fflush(stdout);
|
|
}
|
|
|
|
ret = EXIT_SUCCESS;
|
|
err:
|
|
if (ret != EXIT_SUCCESS)
|
|
ERR_print_errors_fp(stderr);
|
|
BIO_free(in);
|
|
return ret;
|
|
}
|