Initial import of OpenSSL 0.9.4, sans IDEA and RSA code for patent

infringement reasons.

1 files changed, 1163 insertions, 0 deletions

diff --git a/crypto/openssl/ssl/ssltest.c b/crypto/openssl/ssl/ssltest.c
new file mode 100644
index 0000000..90570f4
--- /dev/null
+++ b/crypto/openssl/ssl/ssltest.c
@@ -0,0 +1,1163 @@
+/* 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.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
+
+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
+BIO *bio_err=NULL;
+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
+#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;
+#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,"-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
+# ifndef NO_DSA
+	if (dhe1024) 
+		{
+		DSA *dsa;
+
+		if (verbose)
+			{
+			fprintf(stdout, "Creating 1024 bit DHE parameters ...");
+			fflush(stdout);
+			}
+
+		dsa = DSA_generate_parameters(1024, NULL, 0, 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 == -1)
+					{
+					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 == -1)
+					{
+					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. */
+
+#define RELAYBUFSIZ 200
+			static char buf[RELAYBUFSIZ];
+
+			/* RELAYBUF is arbitrary.  When writing data over some real
+			 * network, use a buffer of the same size as in the BIO_pipe
+			 * and make that size large (for reading from the network
+			 * small buffers usually won't hurt).
+			 * Here sizes differ for testing. */
+
+			size_t r1, r2;
+			size_t num;
+			int r;
+			static int prev_progress = 1;
+			int progress = 0;
+			
+			/* client to server */
+			do
+				{
+				r1 = BIO_ctrl_pending(client_io);
+				r2 = BIO_ctrl_get_write_guarantee(server_io);
+
+				num = r1;
+				if (r2 < num)
+					num = r2;
+				if (num)
+					{
+					if (sizeof buf < num)
+						num = sizeof buf;
+					if (INT_MAX < num) /* yeah, right */
+						num = INT_MAX;
+					
+					r = BIO_read(client_io, buf, (int)num);
+					if (r != (int)num) /* can't happen */
+						{
+						fprintf(stderr, "ERROR: BIO_read could not read "
+							"BIO_ctrl_pending() bytes");
+						goto err;
+						}
+					r = BIO_write(server_io, buf, (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("C->S relaying: %d bytes\n", (int)num);
+					}
+				}
+			while (r1 && r2);
+
+			/* server to client */
+			do
+				{
+				r1 = BIO_ctrl_pending(server_io);
+				r2 = BIO_ctrl_get_write_guarantee(client_io);
+
+				num = r1;
+				if (r2 < num)
+					num = r2;
+				if (num)
+					{
+					if (sizeof buf < num)
+						num = sizeof buf;
+					if (INT_MAX < num)
+						num = INT_MAX;
+					
+					r = BIO_read(server_io, buf, (int)num);
+					if (r != (int)num) /* can't happen */
+						{
+						fprintf(stderr, "ERROR: BIO_read could not read "
+							"BIO_ctrl_pending() bytes");
+						goto err;
+						}
+					r = BIO_write(client_io, buf, (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("S->C relaying: %d bytes\n", (int)num);
+					}
+				}
+			while (r1 && r2);
+
+			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);
+	}
+
+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