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
main(int argc,char ** argv)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 }
118