#include <openssl/err.h>
#include <openssl/ssl.h>
#include <openssl/conf.h>

int main(int argc, char **argv)
	{
	BIO *sbio = NULL, *out = NULL;
	int i, len, rv;
	char tmpbuf[1024];
	SSL_CTX *ctx = NULL;
	SSL_CONF_CTX *cctx = NULL;
	SSL *ssl = NULL;
	CONF *conf = NULL;
	STACK_OF(CONF_VALUE) *sect = NULL;
	CONF_VALUE *cnf;
	const char *connect_str = "localhost:4433";
	long errline = -1;

	ERR_load_crypto_strings();
	ERR_load_SSL_strings();
	SSL_library_init();

	conf = NCONF_new(NULL);

	if (NCONF_load(conf, "connect.cnf", &errline) <= 0)
		{
		if (errline <= 0)
			fprintf(stderr, "Error processing config file\n");
		else
			fprintf(stderr, "Error on line %ld\n", errline);
		goto end;
		}

	sect = NCONF_get_section(conf, "default");

	if (sect == NULL)
		{
		fprintf(stderr, "Error retrieving default section\n");
		goto end;
		}

	ctx = SSL_CTX_new(SSLv23_client_method());
	cctx = SSL_CONF_CTX_new();
	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT);
	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_FILE);
	SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
	for (i = 0; i < sk_CONF_VALUE_num(sect); i++)
		{
		cnf = sk_CONF_VALUE_value(sect, i);
		rv = SSL_CONF_cmd(cctx, cnf->name, cnf->value);
		if (rv > 0)
			continue;
		if (rv != -2)
			{
			fprintf(stderr, "Error processing %s = %s\n",
						cnf->name, cnf->value);
			ERR_print_errors_fp(stderr);
			goto end;
			}
		if (!strcmp(cnf->name, "Connect"))
			{
			connect_str = cnf->value;
			}
		else
			{
			fprintf(stderr, "Unknown configuration option %s\n",
							cnf->name);
			goto end;
			}
		}

	if (!SSL_CONF_CTX_finish(cctx))
		{
		fprintf(stderr, "Finish error\n");
		ERR_print_errors_fp(stderr);
		goto err;
		}
			
	/* We'd normally set some stuff like the verify paths and
	* mode here because as things stand this will connect to
	* any server whose certificate is signed by any CA.
	 */

	sbio = BIO_new_ssl_connect(ctx);

	BIO_get_ssl(sbio, &ssl);

	if(!ssl)
		{
		fprintf(stderr, "Can't locate SSL pointer\n");
	  	goto end;
		}

	/* Don't want any retries */
	SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);

	/* We might want to do other things with ssl here */

	BIO_set_conn_hostname(sbio, connect_str);

	out = BIO_new_fp(stdout, BIO_NOCLOSE);
	if(BIO_do_connect(sbio) <= 0)
		{
		fprintf(stderr, "Error connecting to server\n");
		ERR_print_errors_fp(stderr);
		goto end;
		}

	if(BIO_do_handshake(sbio) <= 0)
		{
		fprintf(stderr, "Error establishing SSL connection\n");
		ERR_print_errors_fp(stderr);
		goto end;
		}

	/* Could examine ssl here to get connection info */

	BIO_puts(sbio, "GET / HTTP/1.0\n\n");
	for(;;)
		{	
		len = BIO_read(sbio, tmpbuf, 1024);
		if(len <= 0) break;
		BIO_write(out, tmpbuf, len);
		}
	end:
	SSL_CONF_CTX_free(cctx);
	BIO_free_all(sbio);
	BIO_free(out);
	NCONF_free(conf);
	return 0;
	}

