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openssl/ssl/ssltest.c
Bodo Möller cb0369d885 Repair another bug in s23_get_client_hello: 
tls1 did not survive to restarts, so get rid of it.
1999-09-10 16:41:01 +00:00

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/* ssl/ssltest.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "openssl/e_os.h"
#include <openssl/bio.h>
#include <openssl/crypto.h>
#include <openssl/x509.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#ifdef WINDOWS
#include "../crypto/bio/bss_file.c"
#endif
#if defined(NO_RSA) && !defined(NO_SSL2)
#define NO_SSL2
#endif
#ifdef VMS
# define TEST_SERVER_CERT "SYS$DISK:[-.APPS]SERVER.PEM"
# define TEST_CLIENT_CERT "SYS$DISK:[-.APPS]CLIENT.PEM"
#else
# define TEST_SERVER_CERT "../apps/server.pem"
# define TEST_CLIENT_CERT "../apps/client.pem"
#endif
static int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
#ifndef NO_RSA
static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export,int keylength);
#endif
#ifndef NO_DH
static DH *get_dh512(void);
#endif
static BIO *bio_err=NULL;
static BIO *bio_stdout=NULL;
static char *cipher=NULL;
int verbose=0;
int debug=0;
#if 0
/* Not used yet. */
#ifdef FIONBIO
static int s_nbio=0;
#endif
#endif
int doit_biopair(SSL *s_ssl,SSL *c_ssl,long bytes);
int doit(SSL *s_ssl,SSL *c_ssl,long bytes);
static void sv_usage(void)
{
fprintf(stderr,"usage: ssltest [args ...]\n");
fprintf(stderr,"\n");
fprintf(stderr," -server_auth - check server certificate\n");
fprintf(stderr," -client_auth - do client authentication\n");
fprintf(stderr," -v - more output\n");
fprintf(stderr," -d - debug output\n");
fprintf(stderr," -reuse - use session-id reuse\n");
fprintf(stderr," -num <val> - number of connections to perform\n");
fprintf(stderr," -bytes <val> - number of bytes to swap between client/server\n");
#if !defined NO_DH && !defined NO_DSA
fprintf(stderr," -dhe1024 - generate 1024 bit key for DHE\n");
#endif
#if !defined NO_DH
fprintf(stderr," -no_dhe - disable DHE\n");
#endif
#ifndef NO_SSL2
fprintf(stderr," -ssl2 - use SSLv2\n");
#endif
#ifndef NO_SSL3
fprintf(stderr," -ssl3 - use SSLv3\n");
#endif
#ifndef NO_TLS1
fprintf(stderr," -tls1 - use TLSv1\n");
#endif
fprintf(stderr," -CApath arg - PEM format directory of CA's\n");
fprintf(stderr," -CAfile arg - PEM format file of CA's\n");
fprintf(stderr," -cert arg - Certificate file\n");
fprintf(stderr," -s_cert arg - Just the server certificate file\n");
fprintf(stderr," -c_cert arg - Just the client certificate file\n");
fprintf(stderr," -cipher arg - The cipher list\n");
fprintf(stderr," -bio_pair - Use BIO pairs\n");
fprintf(stderr," -f - Test even cases that can't work\n");
}
int main(int argc, char *argv[])
{
char *CApath=NULL,*CAfile=NULL;
int badop=0;
int bio_pair=0;
int force=0;
int tls1=0,ssl2=0,ssl3=0,ret=1;
int client_auth=0;
int server_auth=0,i;
char *server_cert=TEST_SERVER_CERT;
char *client_cert=TEST_CLIENT_CERT;
SSL_CTX *s_ctx=NULL;
SSL_CTX *c_ctx=NULL;
SSL_METHOD *meth=NULL;
SSL *c_ssl,*s_ssl;
int number=1,reuse=0;
long bytes=1L;
SSL_CIPHER *ciph;
int dhe1024 = 0, no_dhe = 0;
#ifndef NO_DH
DH *dh;
#endif
bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
bio_stdout=BIO_new_fp(stdout,BIO_NOCLOSE);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
argc--;
argv++;
while (argc >= 1)
{
if (strcmp(*argv,"-server_auth") == 0)
server_auth=1;
else if (strcmp(*argv,"-client_auth") == 0)
client_auth=1;
else if (strcmp(*argv,"-v") == 0)
verbose=1;
else if (strcmp(*argv,"-d") == 0)
debug=1;
else if (strcmp(*argv,"-reuse") == 0)
reuse=1;
else if (strcmp(*argv,"-dhe1024") == 0)
dhe1024=1;
else if (strcmp(*argv,"-no_dhe") == 0)
no_dhe=1;
else if (strcmp(*argv,"-ssl2") == 0)
ssl2=1;
else if (strcmp(*argv,"-tls1") == 0)
tls1=1;
else if (strcmp(*argv,"-ssl3") == 0)
ssl3=1;
else if (strncmp(*argv,"-num",4) == 0)
{
if (--argc < 1) goto bad;
number= atoi(*(++argv));
if (number == 0) number=1;
}
else if (strcmp(*argv,"-bytes") == 0)
{
if (--argc < 1) goto bad;
bytes= atol(*(++argv));
if (bytes == 0L) bytes=1L;
i=strlen(argv[0]);
if (argv[0][i-1] == 'k') bytes*=1024L;
if (argv[0][i-1] == 'm') bytes*=1024L*1024L;
}
else if (strcmp(*argv,"-cert") == 0)
{
if (--argc < 1) goto bad;
server_cert= *(++argv);
}
else if (strcmp(*argv,"-s_cert") == 0)
{
if (--argc < 1) goto bad;
server_cert= *(++argv);
}
else if (strcmp(*argv,"-c_cert") == 0)
{
if (--argc < 1) goto bad;
client_cert= *(++argv);
}
else if (strcmp(*argv,"-cipher") == 0)
{
if (--argc < 1) goto bad;
cipher= *(++argv);
}
else if (strcmp(*argv,"-CApath") == 0)
{
if (--argc < 1) goto bad;
CApath= *(++argv);
}
else if (strcmp(*argv,"-CAfile") == 0)
{
if (--argc < 1) goto bad;
CAfile= *(++argv);
}
else if (strcmp(*argv,"-bio_pair") == 0)
{
bio_pair = 1;
}
else if (strcmp(*argv,"-f") == 0)
{
force = 1;
}
else
{
fprintf(stderr,"unknown option %s\n",*argv);
badop=1;
break;
}
argc--;
argv++;
}
if (badop)
{
bad:
sv_usage();
goto end;
}
if (!ssl2 && !ssl3 && !tls1 && number > 1 && !reuse && !force)
{
fprintf(stderr, "This case cannot work. Use -f switch to perform "
"the test anyway\n"
"(and -d to see what happens, "
"and -bio_pair to really make it happen :-)\n"
"or add one of -ssl2, -ssl3, -tls1, -reuse to "
"avoid protocol mismatch.\n");
exit(1);
}
/* if (cipher == NULL) cipher=getenv("SSL_CIPHER"); */
SSL_library_init();
SSL_load_error_strings();
#if !defined(NO_SSL2) && !defined(NO_SSL3)
if (ssl2)
meth=SSLv2_method();
else
if (tls1)
meth=TLSv1_method();
else
if (ssl3)
meth=SSLv3_method();
else
meth=SSLv23_method();
#else
#ifdef NO_SSL2
meth=SSLv3_method();
#else
meth=SSLv2_method();
#endif
#endif
c_ctx=SSL_CTX_new(meth);
s_ctx=SSL_CTX_new(meth);
if ((c_ctx == NULL) || (s_ctx == NULL))
{
ERR_print_errors(bio_err);
goto end;
}
if (cipher != NULL)
{
SSL_CTX_set_cipher_list(c_ctx,cipher);
SSL_CTX_set_cipher_list(s_ctx,cipher);
}
#ifndef NO_DH
if (!no_dhe)
{
# ifndef NO_DSA
if (dhe1024)
{
DSA *dsa;
unsigned char seed[20];
if (verbose)
{
fprintf(stdout, "Creating 1024 bit DHE parameters ...");
fflush(stdout);
}
memcpy(seed, "Random String no. 12", 20);
dsa = DSA_generate_parameters(1024, seed, 20, NULL, NULL, 0, NULL);
dh = DSA_dup_DH(dsa);
DSA_free(dsa);
/* important: SSL_OP_SINGLE_DH_USE to avoid small subgroup attacks */
SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
if (verbose)
fprintf(stdout, " done\n");
}
else
# endif
dh=get_dh512();
SSL_CTX_set_tmp_dh(s_ctx,dh);
DH_free(dh);
}
#endif
#ifndef NO_RSA
SSL_CTX_set_tmp_rsa_callback(s_ctx,tmp_rsa_cb);
#endif
if (!SSL_CTX_use_certificate_file(s_ctx,server_cert,SSL_FILETYPE_PEM))
{
ERR_print_errors(bio_err);
}
else if (!SSL_CTX_use_PrivateKey_file(s_ctx,server_cert,
SSL_FILETYPE_PEM))
{
ERR_print_errors(bio_err);
goto end;
}
if (client_auth)
{
SSL_CTX_use_certificate_file(c_ctx,client_cert,
SSL_FILETYPE_PEM);
SSL_CTX_use_PrivateKey_file(c_ctx,client_cert,
SSL_FILETYPE_PEM);
}
if ( (!SSL_CTX_load_verify_locations(s_ctx,CAfile,CApath)) ||
(!SSL_CTX_set_default_verify_paths(s_ctx)) ||
(!SSL_CTX_load_verify_locations(c_ctx,CAfile,CApath)) ||
(!SSL_CTX_set_default_verify_paths(c_ctx)))
{
/* fprintf(stderr,"SSL_load_verify_locations\n"); */
ERR_print_errors(bio_err);
/* goto end; */
}
if (client_auth)
{
fprintf(stderr,"client authentication\n");
SSL_CTX_set_verify(s_ctx,
SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
verify_callback);
}
if (server_auth)
{
fprintf(stderr,"server authentication\n");
SSL_CTX_set_verify(c_ctx,SSL_VERIFY_PEER,
verify_callback);
}
c_ssl=SSL_new(c_ctx);
s_ssl=SSL_new(s_ctx);
for (i=0; i<number; i++)
{
if (!reuse) SSL_set_session(c_ssl,NULL);
if (bio_pair)
ret=doit_biopair(s_ssl,c_ssl,bytes);
else
ret=doit(s_ssl,c_ssl,bytes);
}
if (!verbose)
{
ciph=SSL_get_current_cipher(c_ssl);
fprintf(stdout,"Protocol %s, cipher %s, %s\n",
SSL_get_version(c_ssl),
SSL_CIPHER_get_version(ciph),
SSL_CIPHER_get_name(ciph));
}
if ((number > 1) || (bytes > 1L))
printf("%d handshakes of %ld bytes done\n",number,bytes);
SSL_free(s_ssl);
SSL_free(c_ssl);
end:
if (s_ctx != NULL) SSL_CTX_free(s_ctx);
if (c_ctx != NULL) SSL_CTX_free(c_ctx);
if (bio_stdout != NULL) BIO_free(bio_stdout);
ERR_free_strings();
ERR_remove_state(0);
EVP_cleanup();
CRYPTO_mem_leaks(bio_err);
EXIT(ret);
}
int doit_biopair(SSL *s_ssl, SSL *c_ssl, long count)
{
long cw_num = count, cr_num = count, sw_num = count, sr_num = count;
BIO *s_ssl_bio = NULL, *c_ssl_bio = NULL;
BIO *server = NULL, *server_io = NULL, *client = NULL, *client_io = NULL;
SSL_CIPHER *ciph;
int ret = 1;
size_t bufsiz = 256; /* small buffer for testing */
if (!BIO_new_bio_pair(&server, bufsiz, &server_io, bufsiz))
goto err;
if (!BIO_new_bio_pair(&client, bufsiz, &client_io, bufsiz))
goto err;
s_ssl_bio = BIO_new(BIO_f_ssl());
if (!s_ssl_bio)
goto err;
c_ssl_bio = BIO_new(BIO_f_ssl());
if (!c_ssl_bio)
goto err;
SSL_set_connect_state(c_ssl);
SSL_set_bio(c_ssl, client, client);
(void)BIO_set_ssl(c_ssl_bio, c_ssl, BIO_NOCLOSE);
SSL_set_accept_state(s_ssl);
SSL_set_bio(s_ssl, server, server);
(void)BIO_set_ssl(s_ssl_bio, s_ssl, BIO_NOCLOSE);
do
{
/* c_ssl_bio: SSL filter BIO
*
* client: pseudo-I/O for SSL library
*
* client_io: client's SSL communication; usually to be
* relayed over some I/O facility, but in this
* test program, we're the server, too:
*
* server_io: server's SSL communication
*
* server: pseudo-I/O for SSL library
*
* s_ssl_bio: SSL filter BIO
*
* The client and the server each employ a "BIO pair":
* client + client_io, server + server_io.
* BIO pairs are symmetric. A BIO pair behaves similar
* to a non-blocking socketpair (but both endpoints must
* be handled by the same thread).
* [Here we could connect client and server to the ends
* of a single BIO pair, but then this code would be less
* suitable as an example for BIO pairs in general.]
*
* Useful functions for querying the state of BIO pair endpoints:
*
* BIO_ctrl_pending(bio) number of bytes we can read now
* BIO_ctrl_get_read_request(bio) number of bytes needed to fulfil
* other side's read attempt
* BIO_ctrl_get_write_gurantee(bio) number of bytes we can write now
*
* ..._read_request is never more than ..._write_guarantee;
* it depends on the application which one you should use.
*/
/* We have non-blocking behaviour throughout this test program, but
* can be sure that there is *some* progress in each iteration; so
* we don't have to worry about ..._SHOULD_READ or ..._SHOULD_WRITE
* -- we just try everything in each iteration
*/
{
/* CLIENT */
MS_STATIC char cbuf[1024*8];
int i, r;
if (debug)
if (SSL_in_init(c_ssl))
printf("client waiting in SSL_connect - %s\n",
SSL_state_string_long(c_ssl));
if (cw_num > 0)
{
/* Write to server. */
if (cw_num > (long)sizeof cbuf)
i = sizeof cbuf;
else
i = (int)cw_num;
r = BIO_write(c_ssl_bio, cbuf, i);
if (r < 0)
{
if (!BIO_should_retry(c_ssl_bio))
{
fprintf(stderr,"ERROR in CLIENT\n");
goto err;
}
/* BIO_should_retry(...) can just be ignored here.
* The library expects us to call BIO_write with
* the same arguments again, and that's what we will
* do in the next iteration. */
}
else if (r == 0)
{
fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
goto err;
}
else
{
if (debug)
printf("client wrote %d\n", r);
cw_num -= r;
}
}
if (cr_num > 0)
{
/* Read from server. */
r = BIO_read(c_ssl_bio, cbuf, sizeof(cbuf));
if (r < 0)
{
if (!BIO_should_retry(c_ssl_bio))
{
fprintf(stderr,"ERROR in CLIENT\n");
goto err;
}
/* Again, "BIO_should_retry" can be ignored. */
}
else if (r == 0)
{
fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
goto err;
}
else
{
if (debug)
printf("client read %d\n", r);
cr_num -= r;
}
}
}
{
/* SERVER */
MS_STATIC char sbuf[1024*8];
int i, r;
if (debug)
if (SSL_in_init(s_ssl))
printf("server waiting in SSL_accept - %s\n",
SSL_state_string_long(s_ssl));
if (sw_num > 0)
{
/* Write to client. */
if (sw_num > (long)sizeof sbuf)
i = sizeof sbuf;
else
i = (int)sw_num;
r = BIO_write(s_ssl_bio, sbuf, i);
if (r < 0)
{
if (!BIO_should_retry(s_ssl_bio))
{
fprintf(stderr,"ERROR in SERVER\n");
goto err;
}
/* Ignore "BIO_should_retry". */
}
else if (r == 0)
{
fprintf(stderr,"SSL SERVER STARTUP FAILED\n");
goto err;
}
else
{
if (debug)
printf("server wrote %d\n", r);
sw_num -= r;
}
}
if (sr_num > 0)
{
/* Read from client. */
r = BIO_read(s_ssl_bio, sbuf, sizeof(sbuf));
if (r < 0)
{
if (!BIO_should_retry(s_ssl_bio))
{
fprintf(stderr,"ERROR in SERVER\n");
goto err;
}
/* blah, blah */
}
else if (r == 0)
{
fprintf(stderr,"SSL SERVER STARTUP FAILED\n");
goto err;
}
else
{
if (debug)
printf("server read %d\n", r);
sr_num -= r;
}
}
}
{
/* "I/O" BETWEEN CLIENT AND SERVER. */
size_t r1, r2;
BIO *io1 = server_io, *io2 = client_io;
/* we use the non-copying interface for io1
* and the standard BIO_write/BIO_read interface for io2
*/
static int prev_progress = 1;
int progress = 0;
/* io1 to io2 */
do
{
size_t num;
int r;
r1 = BIO_ctrl_pending(io1);
r2 = BIO_ctrl_get_write_guarantee(io2);
num = r1;
if (r2 < num)
num = r2;
if (num)
{
char *dataptr;
if (INT_MAX < num) /* yeah, right */
num = INT_MAX;
r = BIO_nread(io1, &dataptr, (int)num);
assert(r > 0);
assert(r <= (int)num);
/* possibly r < num (non-contiguous data) */
num = r;
r = BIO_write(io2, dataptr, (int)num);
if (r != (int)num) /* can't happen */
{
fprintf(stderr, "ERROR: BIO_write could not write "
"BIO_ctrl_get_write_guarantee() bytes");
goto err;
}
progress = 1;
if (debug)
printf((io1 == client_io) ?
"C->S relaying: %d bytes\n" :
"S->C relaying: %d bytes\n",
(int)num);
}
}
while (r1 && r2);
/* io2 to io1 */
{
size_t num;
int r;
r1 = BIO_ctrl_pending(io2);
r2 = BIO_ctrl_get_read_request(io1);
/* here we could use ..._get_write_guarantee instead of
* ..._get_read_request, but by using the latter
* we test restartability of the SSL implementation
* more thoroughly */
num = r1;
if (r2 < num)
num = r2;
if (num)
{
char *dataptr;
if (INT_MAX < num)
num = INT_MAX;
if (num > 1)
--num; /* test restartability even more thoroughly */
r = BIO_nwrite(io1, &dataptr, (int)num);
assert(r > 0);
assert(r <= (int)num);
num = r;
r = BIO_read(io2, dataptr, (int)num);
if (r != (int)num) /* can't happen */
{
fprintf(stderr, "ERROR: BIO_read could not read "
"BIO_ctrl_pending() bytes");
goto err;
}
progress = 1;
if (debug)
printf((io2 == client_io) ?
"C->S relaying: %d bytes\n" :
"S->C relaying: %d bytes\n",
(int)num);
}
} /* no loop, BIO_ctrl_get_read_request now returns 0 anyway */
if (!progress && !prev_progress)
if (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0)
{
fprintf(stderr, "ERROR: got stuck\n");
if (strcmp("SSLv2", SSL_get_version(c_ssl)) == 0)
{
fprintf(stderr, "This can happen for SSL2 because "
"CLIENT-FINISHED and SERVER-VERIFY are written \n"
"concurrently ...");
if (strncmp("2SCF", SSL_state_string(c_ssl), 4) == 0
&& strncmp("2SSV", SSL_state_string(s_ssl), 4) == 0)
{
fprintf(stderr, " ok.\n");
goto end;
}
}
fprintf(stderr, " ERROR.\n");
goto err;
}
prev_progress = progress;
}
}
while (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0);
ciph = SSL_get_current_cipher(c_ssl);
if (verbose)
fprintf(stdout,"DONE via BIO pair, protocol %s, cipher %s, %s\n",
SSL_get_version(c_ssl),
SSL_CIPHER_get_version(ciph),
SSL_CIPHER_get_name(ciph));
end:
ret = 0;
err:
ERR_print_errors(bio_err);
if (server)
BIO_free(server);
if (server_io)
BIO_free(server_io);
if (client)
BIO_free(client);
if (client_io)
BIO_free(client_io);
if (s_ssl_bio)
BIO_free(s_ssl_bio);
if (c_ssl_bio)
BIO_free(c_ssl_bio);
return ret;
}
#define W_READ 1
#define W_WRITE 2
#define C_DONE 1
#define S_DONE 2
int doit(SSL *s_ssl, SSL *c_ssl, long count)
{
MS_STATIC char cbuf[1024*8],sbuf[1024*8];
long cw_num=count,cr_num=count;
long sw_num=count,sr_num=count;
int ret=1;
BIO *c_to_s=NULL;
BIO *s_to_c=NULL;
BIO *c_bio=NULL;
BIO *s_bio=NULL;
int c_r,c_w,s_r,s_w;
int c_want,s_want;
int i,j;
int done=0;
int c_write,s_write;
int do_server=0,do_client=0;
SSL_CIPHER *ciph;
c_to_s=BIO_new(BIO_s_mem());
s_to_c=BIO_new(BIO_s_mem());
if ((s_to_c == NULL) || (c_to_s == NULL))
{
ERR_print_errors(bio_err);
goto err;
}
c_bio=BIO_new(BIO_f_ssl());
s_bio=BIO_new(BIO_f_ssl());
if ((c_bio == NULL) || (s_bio == NULL))
{
ERR_print_errors(bio_err);
goto err;
}
SSL_set_connect_state(c_ssl);
SSL_set_bio(c_ssl,s_to_c,c_to_s);
BIO_set_ssl(c_bio,c_ssl,BIO_NOCLOSE);
SSL_set_accept_state(s_ssl);
SSL_set_bio(s_ssl,c_to_s,s_to_c);
BIO_set_ssl(s_bio,s_ssl,BIO_NOCLOSE);
c_r=0; s_r=1;
c_w=1; s_w=0;
c_want=W_WRITE;
s_want=0;
c_write=1,s_write=0;
/* We can always do writes */
for (;;)
{
do_server=0;
do_client=0;
i=(int)BIO_pending(s_bio);
if ((i && s_r) || s_w) do_server=1;
i=(int)BIO_pending(c_bio);
if ((i && c_r) || c_w) do_client=1;
if (do_server && debug)
{
if (SSL_in_init(s_ssl))
printf("server waiting in SSL_accept - %s\n",
SSL_state_string_long(s_ssl));
/* else if (s_write)
printf("server:SSL_write()\n");
else
printf("server:SSL_read()\n"); */
}
if (do_client && debug)
{
if (SSL_in_init(c_ssl))
printf("client waiting in SSL_connect - %s\n",
SSL_state_string_long(c_ssl));
/* else if (c_write)
printf("client:SSL_write()\n");
else
printf("client:SSL_read()\n"); */
}
if (!do_client && !do_server)
{
fprintf(stdout,"ERROR IN STARTUP\n");
ERR_print_errors(bio_err);
break;
}
if (do_client && !(done & C_DONE))
{
if (c_write)
{
j=(cw_num > (long)sizeof(cbuf))
?sizeof(cbuf):(int)cw_num;
i=BIO_write(c_bio,cbuf,j);
if (i < 0)
{
c_r=0;
c_w=0;
if (BIO_should_retry(c_bio))
{
if (BIO_should_read(c_bio))
c_r=1;
if (BIO_should_write(c_bio))
c_w=1;
}
else
{
fprintf(stderr,"ERROR in CLIENT\n");
ERR_print_errors(bio_err);
goto err;
}
}
else if (i == 0)
{
fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
goto err;
}
else
{
if (debug)
printf("client wrote %d\n",i);
/* ok */
s_r=1;
c_write=0;
cw_num-=i;
}
}
else
{
i=BIO_read(c_bio,cbuf,sizeof(cbuf));
if (i < 0)
{
c_r=0;
c_w=0;
if (BIO_should_retry(c_bio))
{
if (BIO_should_read(c_bio))
c_r=1;
if (BIO_should_write(c_bio))
c_w=1;
}
else
{
fprintf(stderr,"ERROR in CLIENT\n");
ERR_print_errors(bio_err);
goto err;
}
}
else if (i == 0)
{
fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
goto err;
}
else
{
if (debug)
printf("client read %d\n",i);
cr_num-=i;
if (sw_num > 0)
{
s_write=1;
s_w=1;
}
if (cr_num <= 0)
{
s_write=1;
s_w=1;
done=S_DONE|C_DONE;
}
}
}
}
if (do_server && !(done & S_DONE))
{
if (!s_write)
{
i=BIO_read(s_bio,sbuf,sizeof(cbuf));
if (i < 0)
{
s_r=0;
s_w=0;
if (BIO_should_retry(s_bio))
{
if (BIO_should_read(s_bio))
s_r=1;
if (BIO_should_write(s_bio))
s_w=1;
}
else
{
fprintf(stderr,"ERROR in SERVER\n");
ERR_print_errors(bio_err);
goto err;
}
}
else if (i == 0)
{
ERR_print_errors(bio_err);
fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_read\n");
goto err;
}
else
{
if (debug)
printf("server read %d\n",i);
sr_num-=i;
if (cw_num > 0)
{
c_write=1;
c_w=1;
}
if (sr_num <= 0)
{
s_write=1;
s_w=1;
c_write=0;
}
}
}
else
{
j=(sw_num > (long)sizeof(sbuf))?
sizeof(sbuf):(int)sw_num;
i=BIO_write(s_bio,sbuf,j);
if (i < 0)
{
s_r=0;
s_w=0;
if (BIO_should_retry(s_bio))
{
if (BIO_should_read(s_bio))
s_r=1;
if (BIO_should_write(s_bio))
s_w=1;
}
else
{
fprintf(stderr,"ERROR in SERVER\n");
ERR_print_errors(bio_err);
goto err;
}
}
else if (i == 0)
{
ERR_print_errors(bio_err);
fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_write\n");
goto err;
}
else
{
if (debug)
printf("server wrote %d\n",i);
sw_num-=i;
s_write=0;
c_r=1;
if (sw_num <= 0)
done|=S_DONE;
}
}
}
if ((done & S_DONE) && (done & C_DONE)) break;
}
ciph=SSL_get_current_cipher(c_ssl);
if (verbose)
fprintf(stdout,"DONE, protocol %s, cipher %s, %s\n",
SSL_get_version(c_ssl),
SSL_CIPHER_get_version(ciph),
SSL_CIPHER_get_name(ciph));
ret=0;
err:
/* We have to set the BIO's to NULL otherwise they will be
* Free()ed twice. Once when th s_ssl is SSL_free()ed and
* again when c_ssl is SSL_free()ed.
* This is a hack required because s_ssl and c_ssl are sharing the same
* BIO structure and SSL_set_bio() and SSL_free() automatically
* BIO_free non NULL entries.
* You should not normally do this or be required to do this */
if (s_ssl != NULL)
{
s_ssl->rbio=NULL;
s_ssl->wbio=NULL;
}
if (c_ssl != NULL)
{
c_ssl->rbio=NULL;
c_ssl->wbio=NULL;
}
if (c_to_s != NULL) BIO_free(c_to_s);
if (s_to_c != NULL) BIO_free(s_to_c);
if (c_bio != NULL) BIO_free_all(c_bio);
if (s_bio != NULL) BIO_free_all(s_bio);
return(ret);
}
static int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
{
char *s,buf[256];
s=X509_NAME_oneline(X509_get_subject_name(ctx->current_cert),buf,256);
if (s != NULL)
{
if (ok)
fprintf(stderr,"depth=%d %s\n",ctx->error_depth,buf);
else
fprintf(stderr,"depth=%d error=%d %s\n",
ctx->error_depth,ctx->error,buf);
}
if (ok == 0)
{
switch (ctx->error)
{
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
ok=1;
}
}
return(ok);
}
#ifndef NO_DH
static unsigned char dh512_p[]={
0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
0x47,0x74,0xE8,0x33,
};
static unsigned char dh512_g[]={
0x02,
};
static DH *get_dh512(void)
{
DH *dh=NULL;
if ((dh=DH_new()) == NULL) return(NULL);
dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
if ((dh->p == NULL) || (dh->g == NULL))
return(NULL);
return(dh);
}
#endif
#ifndef NO_RSA
static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
{
static RSA *rsa_tmp=NULL;
if (rsa_tmp == NULL)
{
BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
(void)BIO_flush(bio_err);
rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
BIO_printf(bio_err,"\n");
(void)BIO_flush(bio_err);
}
return(rsa_tmp);
}
#endif
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