2 /* demos/bio/saccept-conf.c */
5 * A minimal program to serve an SSL connection. It uses blocking. It uses
6 * the SSL_CONF API with a configuration file. cc -I../../include saccept.c
7 * -L../.. -lssl -lcrypto -ldl
12 #include <openssl/err.h>
13 #include <openssl/ssl.h>
14 #include <openssl/conf.h>
16 int main(int argc, char *argv[])
18 char *port = "*:4433";
22 SSL_CONF_CTX *cctx = NULL;
24 STACK_OF(CONF_VALUE) *sect = NULL;
30 SSL_load_error_strings();
32 /* Add ciphers and message digests */
33 OpenSSL_add_ssl_algorithms();
35 conf = NCONF_new(NULL);
37 if (NCONF_load(conf, "accept.cnf", &errline) <= 0) {
39 fprintf(stderr, "Error processing config file\n");
41 fprintf(stderr, "Error on line %ld\n", errline);
45 sect = NCONF_get_section(conf, "default");
48 fprintf(stderr, "Error retrieving default section\n");
52 ctx = SSL_CTX_new(SSLv23_server_method());
53 cctx = SSL_CONF_CTX_new();
54 SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);
55 SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CERTIFICATE);
56 SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_FILE);
57 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
58 for (i = 0; i < sk_CONF_VALUE_num(sect); i++) {
60 cnf = sk_CONF_VALUE_value(sect, i);
61 rv = SSL_CONF_cmd(cctx, cnf->name, cnf->value);
65 fprintf(stderr, "Error processing %s = %s\n",
66 cnf->name, cnf->value);
67 ERR_print_errors_fp(stderr);
70 if (!strcmp(cnf->name, "Port")) {
73 fprintf(stderr, "Unknown configuration option %s\n", cnf->name);
78 if (!SSL_CONF_CTX_finish(cctx)) {
79 fprintf(stderr, "Finish error\n");
80 ERR_print_errors_fp(stderr);
84 /* Setup server side SSL bio */
85 ssl_bio = BIO_new_ssl(ctx, 0);
87 if ((in = BIO_new_accept(port)) == NULL)
91 * This means that when a new connection is accepted on 'in', The ssl_bio
92 * will be 'duplicated' and have the new socket BIO push into it.
93 * Basically it means the SSL BIO will be automatically setup
95 BIO_set_accept_bios(in, ssl_bio);
99 * The first call will setup the accept socket, and the second will get a
100 * socket. In this loop, the first actual accept will occur in the
101 * BIO_read() function.
104 if (BIO_do_accept(in) <= 0)
108 i = BIO_read(in, buf, 512);
111 * If we have finished, remove the underlying BIO stack so the
112 * next time we call any function for this BIO, it will attempt
121 if (BIO_should_retry(in))
125 fwrite(buf, 1, i, stdout);
132 ERR_print_errors_fp(stderr);