2 * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 * A minimal program to serve an SSL connection. It uses blocking. It use the
12 * SSL_CONF API with the command line. cc -I../../include server-arg.c
13 * -L../.. -lssl -lcrypto -ldl
19 #include <openssl/err.h>
20 #include <openssl/ssl.h>
22 int main(int argc, char *argv[])
24 char *port = "*:4433";
31 char **args = argv + 1;
34 ctx = SSL_CTX_new(TLS_server_method());
36 cctx = SSL_CONF_CTX_new();
37 SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);
38 SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CERTIFICATE);
39 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
40 while (*args && **args == '-') {
42 /* Parse standard arguments */
43 rv = SSL_CONF_cmd_argv(cctx, &nargs, &args);
45 fprintf(stderr, "Missing argument for %s\n", *args);
49 fprintf(stderr, "Error in command %s\n", *args);
50 ERR_print_errors_fp(stderr);
53 /* If rv > 0 we processed something so proceed to next arg */
56 /* Otherwise application specific argument processing */
57 if (strcmp(*args, "-port") == 0) {
60 fprintf(stderr, "Missing -port argument\n");
67 fprintf(stderr, "Unknown argument %s\n", *args);
72 if (!SSL_CONF_CTX_finish(cctx)) {
73 fprintf(stderr, "Finish error\n");
74 ERR_print_errors_fp(stderr);
79 * Demo of how to iterate over all certificates in an SSL_CTX structure.
84 rv = SSL_CTX_set_current_cert(ctx, SSL_CERT_SET_FIRST);
86 X509 *x = SSL_CTX_get0_certificate(ctx);
87 X509_NAME_print_ex_fp(stdout, X509_get_subject_name(x), 0,
90 rv = SSL_CTX_set_current_cert(ctx, SSL_CERT_SET_NEXT);
95 /* Setup server side SSL bio */
96 ssl_bio = BIO_new_ssl(ctx, 0);
98 if ((in = BIO_new_accept(port)) == NULL)
102 * This means that when a new connection is accepted on 'in', The ssl_bio
103 * will be 'duplicated' and have the new socket BIO push into it.
104 * Basically it means the SSL BIO will be automatically setup
106 BIO_set_accept_bios(in, ssl_bio);
110 * The first call will setup the accept socket, and the second will get a
111 * socket. In this loop, the first actual accept will occur in the
112 * BIO_read() function.
115 if (BIO_do_accept(in) <= 0)
119 i = BIO_read(in, buf, 512);
122 * If we have finished, remove the underlying BIO stack so the
123 * next time we call any function for this BIO, it will attempt
133 fwrite(buf, 1, i, stdout);
140 ERR_print_errors_fp(stderr);