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| 1 | +/* |
| 2 | + * Copyright 2013-2021 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | + * |
| 4 | + * Licensed under the Apache License 2.0 (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 | +#include <string.h> |
| 11 | +#include <openssl/err.h> |
| 12 | +#include <openssl/ssl.h> |
| 13 | +#include <openssl/conf.h> |
| 14 | + |
| 15 | +int main(int argc, char **argv) |
| 16 | +{ |
| 17 | + BIO *sbio = NULL, *out = NULL; |
| 18 | + int i, len, rv; |
| 19 | + char tmpbuf[1024]; |
| 20 | + SSL_CTX *ctx = NULL; |
| 21 | + SSL_CONF_CTX *cctx = NULL; |
| 22 | + SSL *ssl = NULL; |
| 23 | + CONF *conf = NULL; |
| 24 | + STACK_OF(CONF_VALUE) *sect = NULL; |
| 25 | + CONF_VALUE *cnf; |
| 26 | + const char *connect_str = "localhost:4433"; |
| 27 | + long errline = -1; |
| 28 | + |
| 29 | + conf = NCONF_new(NULL); |
| 30 | + |
| 31 | + if (NCONF_load(conf, "connect.cnf", &errline) <= 0) { |
| 32 | + if (errline <= 0) |
| 33 | + fprintf(stderr, "Error processing config file\n"); |
| 34 | + else |
| 35 | + fprintf(stderr, "Error on line %ld\n", errline); |
| 36 | + goto end; |
| 37 | + } |
| 38 | + |
| 39 | + sect = NCONF_get_section(conf, "default"); |
| 40 | + |
| 41 | + if (sect == NULL) { |
| 42 | + fprintf(stderr, "Error retrieving default section\n"); |
| 43 | + goto end; |
| 44 | + } |
| 45 | + |
| 46 | + ctx = SSL_CTX_new(TLS_client_method()); |
| 47 | + cctx = SSL_CONF_CTX_new(); |
| 48 | + SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT); |
| 49 | + SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_FILE); |
| 50 | + SSL_CONF_CTX_set_ssl_ctx(cctx, ctx); |
| 51 | + for (i = 0; i < sk_CONF_VALUE_num(sect); i++) { |
| 52 | + cnf = sk_CONF_VALUE_value(sect, i); |
| 53 | + rv = SSL_CONF_cmd(cctx, cnf->name, cnf->value); |
| 54 | + if (rv > 0) |
| 55 | + continue; |
| 56 | + if (rv != -2) { |
| 57 | + fprintf(stderr, "Error processing %s = %s\n", |
| 58 | + cnf->name, cnf->value); |
| 59 | + ERR_print_errors_fp(stderr); |
| 60 | + goto end; |
| 61 | + } |
| 62 | + if (strcmp(cnf->name, "Connect") == 0) { |
| 63 | + connect_str = cnf->value; |
| 64 | + } else { |
| 65 | + fprintf(stderr, "Unknown configuration option %s\n", cnf->name); |
| 66 | + goto end; |
| 67 | + } |
| 68 | + } |
| 69 | + |
| 70 | + if (!SSL_CONF_CTX_finish(cctx)) { |
| 71 | + fprintf(stderr, "Finish error\n"); |
| 72 | + ERR_print_errors_fp(stderr); |
| 73 | + goto end; |
| 74 | + } |
| 75 | + |
| 76 | + /* |
| 77 | + * We'd normally set some stuff like the verify paths and * mode here |
| 78 | + * because as things stand this will connect to * any server whose |
| 79 | + * certificate is signed by any CA. |
| 80 | + */ |
| 81 | + |
| 82 | + sbio = BIO_new_ssl_connect(ctx); |
| 83 | + |
| 84 | + BIO_get_ssl(sbio, &ssl); |
| 85 | + |
| 86 | + if (!ssl) { |
| 87 | + fprintf(stderr, "Can't locate SSL pointer\n"); |
| 88 | + goto end; |
| 89 | + } |
| 90 | + |
| 91 | + /* We might want to do other things with ssl here */ |
| 92 | + |
| 93 | + BIO_set_conn_hostname(sbio, connect_str); |
| 94 | + |
| 95 | + out = BIO_new_fp(stdout, BIO_NOCLOSE); |
| 96 | + if (BIO_do_connect(sbio) <= 0) { |
| 97 | + fprintf(stderr, "Error connecting to server\n"); |
| 98 | + ERR_print_errors_fp(stderr); |
| 99 | + goto end; |
| 100 | + } |
| 101 | + |
| 102 | + /* Could examine ssl here to get connection info */ |
| 103 | + |
| 104 | + BIO_puts(sbio, "GET / HTTP/1.0\n\n"); |
| 105 | + for (;;) { |
| 106 | + len = BIO_read(sbio, tmpbuf, 1024); |
| 107 | + if (len <= 0) |
| 108 | + break; |
| 109 | + BIO_write(out, tmpbuf, len); |
| 110 | + } |
| 111 | + end: |
| 112 | + SSL_CONF_CTX_free(cctx); |
| 113 | + BIO_free_all(sbio); |
| 114 | + BIO_free(out); |
| 115 | + NCONF_free(conf); |
| 116 | + return 0; |
| 117 | +} |
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