Commit 38141708 authored by Dr. Stephen Henson's avatar Dr. Stephen Henson
Browse files

Add demo for SSL server using SSL_CONF. 

(cherry picked from commit ebd14bfc)
parent 984a3042

demos/bio/accept.cnf

0 → 100644
+12 −0
Original line number Diff line number Diff line 
# Example configuration file

# Connects to the default port of s_server

Port = localhost:4433

# Disable TLS v1.2 for test.

# Protocol = ALL, -TLSv1.2

# Only support 3 curves

Curves = P-521:P-384:P-256

ECDHParameters = Automatic

# Restricted signature algorithms

SignatureAlgorithms = RSA+SHA512:ECDSA+SHA512 

Certificate=server.pem

PrivateKey=server.pem

demos/bio/client-arg.c

+7 −0
Original line number Diff line number Diff line
@@ -60,6 +60,13 @@ int main(int argc, char **argv) 
			}

		}



	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.

demos/bio/client-conf.c

+7 −0
Original line number Diff line number Diff line
@@ -69,6 +69,13 @@ int main(int argc, char **argv) 
			}

		}



	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.

demos/bio/server-arg.c

0 → 100644
+135 −0
Original line number Diff line number Diff line 
/* NOCW */

/* demos/bio/saccept.c */



/* A minimal program to server an SSL connection.

 * It uses blocking.

 * saccept host:port

 * host is the interface IP to use.  If any interface, use *:port

 * The default it *:4433

 *

 * cc -I../../include saccept.c -L../.. -lssl -lcrypto

 */



#include <stdio.h>

#include <signal.h>

#include <openssl/err.h>

#include <openssl/ssl.h>





int main(int argc, char *argv[])

	{

	char *port = "*:4433";

	BIO *ssl_bio,*tmp;

	SSL_CTX *ctx;

	SSL_CONF_CTX *cctx;

	char buf[512];

	BIO *in=NULL;

	int ret=1,i;

	char **args = argv + 1;

	int nargs = argc - 1;



	SSL_load_error_strings();



	/* Add ciphers and message digests */

	OpenSSL_add_ssl_algorithms();



	ctx=SSL_CTX_new(SSLv23_server_method());



	cctx = SSL_CONF_CTX_new();

	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);

	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CERTIFICATE);

	SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);

	while(*args && **args == '-')

		{

		int rv;

		/* Parse standard arguments */

		rv = SSL_CONF_cmd_argv(cctx, &nargs, &args);

		if (rv == -3)

			{

			fprintf(stderr, "Missing argument for %s\n", *args);

			goto err;

			}

		if (rv < 0)

			{

			fprintf(stderr, "Error in command %s\n", *args);

			ERR_print_errors_fp(stderr);

			goto err;

			}

		/* If rv > 0 we processed something so proceed to next arg */

		if (rv > 0)

			continue;

		/* Otherwise application specific argument processing */

		if (!strcmp(*args, "-port"))

			{

			port = args[1];

			if (port == NULL)

				{

				fprintf(stderr, "Missing -port argument\n");

				goto err;

				}

			args += 2;

			nargs -= 2;

			continue;

			}

		else

			{

			fprintf(stderr, "Unknown argument %s\n", *args);

			goto err;

			}

		}



	if (!SSL_CONF_CTX_finish(cctx))

		{

		fprintf(stderr, "Finish error\n");

		ERR_print_errors_fp(stderr);

		goto err;

		}



	/* Setup server side SSL bio */

	ssl_bio=BIO_new_ssl(ctx,0);



	if ((in=BIO_new_accept(port)) == NULL) goto err;



	/* This means that when a new connection is acceptede on 'in',

	 * The ssl_bio will be 'dupilcated' and have the new socket

	 * BIO push into it.  Basically it means the SSL BIO will be

	 * automatically setup */

	BIO_set_accept_bios(in,ssl_bio);



again:

	/* The first call will setup the accept socket, and the second

	 * will get a socket.  In this loop, the first actual accept

	 * will occur in the BIO_read() function. */



	if (BIO_do_accept(in) <= 0) goto err;



	for (;;)

		{

		i=BIO_read(in,buf,512);

		if (i == 0)

			{

			/* If we have finished, remove the underlying

			 * BIO stack so the next time we call any function

			 * for this BIO, it will attempt to do an

			 * accept */

			printf("Done\n");

			tmp=BIO_pop(in);

			BIO_free_all(tmp);

			goto again;

			}

		if (i < 0) goto err;

		fwrite(buf,1,i,stdout);

		fflush(stdout);

		}



	ret=0;

err:

	if (ret)

		{

		ERR_print_errors_fp(stderr);

		}

	if (in != NULL) BIO_free(in);

	exit(ret);

	return(!ret);

	}

demos/bio/server-conf.c

0 → 100644
+143 −0
Original line number Diff line number Diff line 
/* NOCW */

/* demos/bio/saccept.c */



/* A minimal program to server an SSL connection.

 * It uses blocking.

 * saccept host:port

 * host is the interface IP to use.  If any interface, use *:port

 * The default it *:4433

 *

 * cc -I../../include saccept.c -L../.. -lssl -lcrypto

 */



#include <stdio.h>

#include <signal.h>

#include <openssl/err.h>

#include <openssl/ssl.h>

#include <openssl/conf.h>



int main(int argc, char *argv[])

	{

	char *port = "*:4433";

	BIO *in=NULL;

	BIO *ssl_bio,*tmp;

	SSL_CTX *ctx;

	SSL_CONF_CTX *cctx = NULL;

	CONF *conf = NULL;

	STACK_OF(CONF_VALUE) *sect = NULL;

	CONF_VALUE *cnf;

	long errline = -1;

	char buf[512];

	int ret=1,i;



	SSL_load_error_strings();



	/* Add ciphers and message digests */

	OpenSSL_add_ssl_algorithms();



	conf = NCONF_new(NULL);



	if (NCONF_load(conf, "accept.cnf", &errline) <= 0)

		{

		if (errline <= 0)

			fprintf(stderr, "Error processing config file\n");

		else

			fprintf(stderr, "Error on line %ld\n", errline);

		goto err;

		}



	sect = NCONF_get_section(conf, "default");



	if (sect == NULL)

		{

		fprintf(stderr, "Error retrieving default section\n");

		goto err;

		}



	ctx=SSL_CTX_new(SSLv23_server_method());

	cctx = SSL_CONF_CTX_new();

	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);

	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CERTIFICATE);

	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++)

		{

		int rv;

		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 err;

			}

		if (!strcmp(cnf->name, "Port"))

			{

			port = cnf->value;

			}

		else

			{

			fprintf(stderr, "Unknown configuration option %s\n",

							cnf->name);

			goto err;

			}

		}



	if (!SSL_CONF_CTX_finish(cctx))

		{

		fprintf(stderr, "Finish error\n");

		ERR_print_errors_fp(stderr);

		goto err;

		}



	/* Setup server side SSL bio */

	ssl_bio=BIO_new_ssl(ctx,0);



	if ((in=BIO_new_accept(port)) == NULL) goto err;



	/* This means that when a new connection is acceptede on 'in',

	 * The ssl_bio will be 'dupilcated' and have the new socket

	 * BIO push into it.  Basically it means the SSL BIO will be

	 * automatically setup */

	BIO_set_accept_bios(in,ssl_bio);



again:

	/* The first call will setup the accept socket, and the second

	 * will get a socket.  In this loop, the first actual accept

	 * will occur in the BIO_read() function. */



	if (BIO_do_accept(in) <= 0) goto err;



	for (;;)

		{

		i=BIO_read(in,buf,512);

		if (i == 0)

			{

			/* If we have finished, remove the underlying

			 * BIO stack so the next time we call any function

			 * for this BIO, it will attempt to do an

			 * accept */

			printf("Done\n");

			tmp=BIO_pop(in);

			BIO_free_all(tmp);

			goto again;

			}

		if (i < 0) goto err;

		fwrite(buf,1,i,stdout);

		fflush(stdout);

		}



	ret=0;

err:

	if (ret)

		{

		ERR_print_errors_fp(stderr);

		}

	if (in != NULL) BIO_free(in);

	exit(ret);

	return(!ret);

	}