| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 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 |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * A minimal TLS server it ses SSL_CTX_config and a configuration file to |
| 12 | * set most server parameters. |
| 13 | */ |
| 14 | |
| 15 | #include <stdio.h> |
| 16 | #include <signal.h> |
| 17 | #include <stdlib.h> |
| 18 | #include <openssl/err.h> |
| 19 | #include <openssl/ssl.h> |
| 20 | #include <openssl/conf.h> |
| 21 | |
| 22 | int main(int argc, char *argv[]) |
| 23 | { |
| 24 | unsigned char buf[512]; |
| 25 | char *port = "*:4433"; |
| 26 | BIO *in = NULL; |
| 27 | BIO *ssl_bio, *tmp; |
| 28 | SSL_CTX *ctx; |
| 29 | int ret = EXIT_FAILURE, i; |
| 30 | |
| 31 | ctx = SSL_CTX_new(TLS_server_method()); |
| 32 | |
| 33 | if (CONF_modules_load_file("cmod.cnf", "testapp", 0) <= 0) { |
| 34 | fprintf(stderr, "Error processing config file\n"); |
| 35 | goto err; |
| 36 | } |
| 37 | |
| 38 | if (SSL_CTX_config(ctx, "server") == 0) { |
| 39 | fprintf(stderr, "Error configuring server.\n"); |
| 40 | goto err; |
| 41 | } |
| 42 | |
| 43 | /* Setup server side SSL bio */ |
| 44 | ssl_bio = BIO_new_ssl(ctx, 0); |
| 45 | |
| 46 | if ((in = BIO_new_accept(port)) == NULL) |
| 47 | goto err; |
| 48 | |
| 49 | /* |
| 50 | * This means that when a new connection is accepted on 'in', The ssl_bio |
| 51 | * will be 'duplicated' and have the new socket BIO push into it. |
| 52 | * Basically it means the SSL BIO will be automatically setup |
| 53 | */ |
| 54 | BIO_set_accept_bios(in, ssl_bio); |
| 55 | |
| 56 | again: |
| 57 | /* |
| 58 | * The first call will setup the accept socket, and the second will get a |
| 59 | * socket. In this loop, the first actual accept will occur in the |
| 60 | * BIO_read() function. |
| 61 | */ |
| 62 | |
| 63 | if (BIO_do_accept(in) <= 0) |
| 64 | goto err; |
| 65 | |
| 66 | for (;;) { |
| 67 | i = BIO_read(in, buf, sizeof(buf)); |
| 68 | if (i == 0) { |
| 69 | /* |
| 70 | * If we have finished, remove the underlying BIO stack so the |
| 71 | * next time we call any function for this BIO, it will attempt |
| 72 | * to do an accept |
| 73 | */ |
| 74 | printf("Done\n"); |
| 75 | tmp = BIO_pop(in); |
| 76 | BIO_free_all(tmp); |
| 77 | goto again; |
| 78 | } |
| 79 | if (i < 0) { |
| 80 | if (BIO_should_retry(in)) |
| 81 | continue; |
| 82 | goto err; |
| 83 | } |
| 84 | fwrite(buf, 1, i, stdout); |
| 85 | fflush(stdout); |
| 86 | } |
| 87 | |
| 88 | ret = EXIT_SUCCESS; |
| 89 | err: |
| 90 | if (ret != EXIT_SUCCESS) |
| 91 | ERR_print_errors_fp(stderr); |
| 92 | BIO_free(in); |
| 93 | return ret; |
| 94 | } |