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Add demo for SSL server using SSL_CONF.

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This commit is contained in:
Dr. Stephen Henson 2013-10-18 16:28:38 +01:00
parent ec2f7e568e
commit ebd14bfce9
5 changed files with 304 additions and 0 deletions
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12
demos/bio/accept.cnf Normal file
View File

@ -0,0 +1,12 @@
# 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

7
demos/bio/client-arg.c
View File

@ -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.

7
demos/bio/client-conf.c
View File

@ -68,6 +68,13 @@ int main(int argc, char **argv)
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

135
demos/bio/server-arg.c Normal file
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@ -0,0 +1,135 @@
/* 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);
}

143
demos/bio/server-conf.c Normal file
View File

@ -0,0 +1,143 @@
/* 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);
}