X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fssl_lib.c;h=5af71b55454abf6b6443252ec2cf6a0de4a44fcd;hp=b16339848b275a8da1eed1692af909d2983373c0;hb=3142c86d65a7da76d60622dcf1c177479d1bc9de;hpb=dfeab0689f69c0b4bd3480ffd37a9cacc2f17d9c

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index b16339848b..5af71b5545 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1,4 +1,6 @@
-/* ssl/ssl_lib.c */
+/*! \file ssl/ssl_lib.c
+ *  \brief Version independent SSL functions.
+ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -57,50 +59,77 @@
  */
 
 #include <stdio.h>
-#include "objects.h"
-#include "lhash.h"
+#include <openssl/objects.h>
+#include <openssl/lhash.h>
+#include <openssl/x509v3.h>
 #include "ssl_locl.h"
 
-char *SSL_version_str="SSLeay 0.9.1a 06-Jul-1998";
+const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 
-static STACK *ssl_meth=NULL;
-static STACK *ssl_ctx_meth=NULL;
+static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
+static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
 static int ssl_meth_num=0;
 static int ssl_ctx_meth_num=0;
 
-SSL3_ENC_METHOD ssl3_undef_enc_method={
-	ssl_undefined_function,
-	ssl_undefined_function,
-	ssl_undefined_function,
-	ssl_undefined_function,
-	ssl_undefined_function,
+OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
+	/* evil casts, but these functions are only called if there's a library bug */
+	(int (*)(SSL *,int))ssl_undefined_function,
+	(int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
 	ssl_undefined_function,
+	(int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
+	(int (*)(SSL*, int))ssl_undefined_function,
+	(int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function
+	};
+
+union rsa_fn_to_char_u
+	{
+	char *char_p;
+	RSA *(*fn_p)(SSL *, int, int);
+	};
+
+union dh_fn_to_char_u
+	{
+	char *char_p;
+	DH *(*fn_p)(SSL *, int, int);
 	};
 
-void SSL_clear(s)
-SSL *s;
+int SSL_clear(SSL *s)
 	{
 	int state;
 
-	if (s->method == NULL) return;
+	if (s->method == NULL)
+		{
+		SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
+		return(0);
+		}
 
 	s->error=0;
 	s->hit=0;
+	s->shutdown=0;
 
+#if 0 /* Disabled since version 1.10 of this file (early return not
+       * needed because SSL_clear is not called when doing renegotiation) */
 	/* This is set if we are doing dynamic renegotiation so keep
 	 * the old cipher.  It is sort of a SSL_clear_lite :-) */
-	if (s->new_session) return;
+	if (s->new_session) return(1);
+#else
+	if (s->new_session)
+		{
+		SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR);
+		return 0;
+		}
+#endif
 
 	state=s->state; /* Keep to check if we throw away the session-id */
 	s->type=0;
 
+	s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
+
 	s->version=s->method->version;
+	s->client_version=s->version;
 	s->rwstate=SSL_NOTHING;
-	s->state=SSL_ST_BEFORE;
 	s->rstate=SSL_ST_READ_HEADER;
-	s->read_ahead=s->ctx->default_read_ahead;
-
-/*	s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN); */
+	s->read_ahead=s->ctx->read_ahead;
 
 	if (s->init_buf != NULL)
 		{
@@ -116,24 +145,34 @@ SSL *s;
 		s->session=NULL;
 		}
 
-	s->shutdown=(SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 	s->first_packet=0;
 
-	s->method->ssl_clear(s);
+#if 1
+	/* Check to see if we were changed into a different method, if
+	 * so, revert back if we are not doing session-id reuse. */
+	if ((s->session == NULL) && (s->method != s->ctx->method))
+		{
+		s->method->ssl_free(s);
+		s->method=s->ctx->method;
+		if (!s->method->ssl_new(s))
+			return(0);
+		}
+	else
+#endif
+		s->method->ssl_clear(s);
+	return(1);
 	}
 
-/* Used to change an SSL_CTXs default SSL method type */
-int SSL_CTX_set_ssl_version(ctx,meth)
-SSL_CTX *ctx;
-SSL_METHOD *meth;
+/** Used to change an SSL_CTXs default SSL method type */
+int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
 	{
-	STACK *sk;
+	STACK_OF(SSL_CIPHER) *sk;
 
 	ctx->method=meth;
 
 	sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
 		&(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
-	if ((sk == NULL) || (sk_num(sk) <= 0))
+	if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
 		{
 		SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
 		return(0);
@@ -141,8 +180,7 @@ SSL_METHOD *meth;
 	return(1);
 	}
 
-SSL *SSL_new(ctx)
-SSL_CTX *ctx;
+SSL *SSL_new(SSL_CTX *ctx)
 	{
 	SSL *s;
 
@@ -161,16 +199,31 @@ SSL_CTX *ctx;
 	if (s == NULL) goto err;
 	memset(s,0,sizeof(SSL));
 
-	if (ctx->default_cert != NULL)
+	if (ctx->cert != NULL)
 		{
-		CRYPTO_add(&ctx->default_cert->references,1,
-			CRYPTO_LOCK_SSL_CERT);
-		s->cert=ctx->default_cert;
+		/* Earlier library versions used to copy the pointer to
+		 * the CERT, not its contents; only when setting new
+		 * parameters for the per-SSL copy, ssl_cert_new would be
+		 * called (and the direct reference to the per-SSL_CTX
+		 * settings would be lost, but those still were indirectly
+		 * accessed for various purposes, and for that reason they
+		 * used to be known as s->ctx->default_cert).
+		 * Now we don't look at the SSL_CTX's CERT after having
+		 * duplicated it once. */
+
+		s->cert = ssl_cert_dup(ctx->cert);
+		if (s->cert == NULL)
+			goto err;
 		}
 	else
-		s->cert=NULL;
-	s->verify_mode=ctx->default_verify_mode;
+		s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
+	s->sid_ctx_length=ctx->sid_ctx_length;
+	memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
+	s->verify_mode=ctx->verify_mode;
+	s->verify_depth=ctx->verify_depth;
 	s->verify_callback=ctx->default_verify_callback;
+	s->purpose = ctx->purpose;
+	s->trust = ctx->trust;
 	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 	s->ctx=ctx;
 
@@ -179,30 +232,106 @@ SSL_CTX *ctx;
 	s->method=ctx->method;
 
 	if (!s->method->ssl_new(s))
-		{
-		SSL_CTX_free(ctx);
-		Free(s);
 		goto err;
-		}
 
 	s->quiet_shutdown=ctx->quiet_shutdown;
 	s->references=1;
+	s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
 	s->options=ctx->options;
+	s->mode=ctx->mode;
 	SSL_clear(s);
 
-	CRYPTO_new_ex_data(ssl_meth,(char *)s,&s->ex_data);
+	CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
 
 	return(s);
 err:
+	if (s != NULL)
+		{
+		if (s->cert != NULL)
+			ssl_cert_free(s->cert);
+		if (s->ctx != NULL)
+			SSL_CTX_free(s->ctx); /* decrement reference count */
+		Free(s);
+		}
 	SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
 	return(NULL);
 	}
 
-void SSL_free(s)
-SSL *s;
+int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
+				   unsigned int sid_ctx_len)
+    {
+    if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
+	{
+	SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+	return 0;
+	}
+    ctx->sid_ctx_length=sid_ctx_len;
+    memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
+
+    return 1;
+    }
+
+int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
+			       unsigned int sid_ctx_len)
+    {
+    if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
+	{
+	SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
+	return 0;
+	}
+    ssl->sid_ctx_length=sid_ctx_len;
+    memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
+
+    return 1;
+    }
+
+int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
+{
+	if(X509_PURPOSE_get_by_id(purpose) == -1) {
+		SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
+		return 0;
+	}
+	s->purpose = purpose;
+	return 1;
+}
+
+int SSL_set_purpose(SSL *s, int purpose)
+{
+	if(X509_PURPOSE_get_by_id(purpose) == -1) {
+		SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
+		return 0;
+	}
+	s->purpose = purpose;
+	return 1;
+}
+	
+int SSL_CTX_set_trust(SSL_CTX *s, int trust)
+{
+	if(X509_TRUST_get_by_id(trust) == -1) {
+		SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
+		return 0;
+	}
+	s->trust = trust;
+	return 1;
+}
+
+int SSL_set_trust(SSL *s, int trust)
+{
+	if(X509_TRUST_get_by_id(trust) == -1) {
+		SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
+		return 0;
+	}
+	s->trust = trust;
+	return 1;
+}
+
+void SSL_free(SSL *s)
 	{
 	int i;
 
+	if(s == NULL)
+	    return;
+
 	i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
 #ifdef REF_PRINT
 	REF_PRINT("SSL",s);
@@ -236,8 +365,8 @@ SSL *s;
 	if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
 
 	/* add extra stuff */
-	if (s->cipher_list != NULL) sk_free(s->cipher_list);
-	if (s->cipher_list_by_id != NULL) sk_free(s->cipher_list_by_id);
+	if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
+	if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
 
 	/* Make the next call work :-) */
 	if (s->session != NULL)
@@ -248,28 +377,20 @@ SSL *s;
 
 	ssl_clear_cipher_ctx(s);
 
-	if (s->expand != NULL)
-		COMP_CTX_free(s->expand);
-	if (s->compress != NULL)
-		COMP_CTX_free(s->compress);
-
 	if (s->cert != NULL) ssl_cert_free(s->cert);
 	/* Free up if allocated */
 
 	if (s->ctx) SSL_CTX_free(s->ctx);
 
 	if (s->client_CA != NULL)
-		sk_pop_free(s->client_CA,X509_NAME_free);
+		sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 
 	if (s->method != NULL) s->method->ssl_free(s);
 
-	Free((char *)s);
+	Free(s);
 	}
 
-void SSL_set_bio(s, rbio,wbio)
-SSL *s;
-BIO *rbio;
-BIO *wbio;
+void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 	{
 	/* If the output buffering BIO is still in place, remove it
 	 */
@@ -289,16 +410,13 @@ BIO *wbio;
 	s->wbio=wbio;
 	}
 
-BIO *SSL_get_rbio(s)
-SSL *s;
+BIO *SSL_get_rbio(SSL *s)
 	{ return(s->rbio); }
 
-BIO *SSL_get_wbio(s)
-SSL *s;
+BIO *SSL_get_wbio(SSL *s)
 	{ return(s->wbio); }
 
-int SSL_get_fd(s)
-SSL *s;
+int SSL_get_fd(SSL *s)
 	{
 	int ret= -1;
 	BIO *b,*r;
@@ -311,9 +429,7 @@ SSL *s;
 	}
 
 #ifndef NO_SOCK
-int SSL_set_fd(s, fd)
-SSL *s;
-int fd;
+int SSL_set_fd(SSL *s,int fd)
 	{
 	int ret=0;
 	BIO *bio=NULL;
@@ -332,9 +448,7 @@ err:
 	return(ret);
 	}
 
-int SSL_set_wfd(s, fd)
-SSL *s;
-int fd;
+int SSL_set_wfd(SSL *s,int fd)
 	{
 	int ret=0;
 	BIO *bio=NULL;
@@ -356,9 +470,7 @@ err:
 	return(ret);
 	}
 
-int SSL_set_rfd(s, fd)
-SSL *s;
-int fd;
+int SSL_set_rfd(SSL *s,int fd)
 	{
 	int ret=0;
 	BIO *bio=NULL;
@@ -384,61 +496,97 @@ err:
 	}
 #endif
 
-int SSL_get_verify_mode(s)
-SSL *s;
+
+/* return length of latest Finished message we sent, copy to 'buf' */
+size_t SSL_get_finished(SSL *s, void *buf, size_t count)
+	{
+	size_t ret = 0;
+	
+	if (s->s3 != NULL)
+		{
+		ret = s->s3->tmp.finish_md_len;
+		if (count > ret)
+			count = ret;
+		memcpy(buf, s->s3->tmp.finish_md, count);
+		}
+	return ret;
+	}
+
+/* return length of latest Finished message we expected, copy to 'buf' */
+size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
+	{
+	size_t ret = 0;
+	
+	if (s->s3 != NULL)
+		{
+		ret = s->s3->tmp.peer_finish_md_len;
+		if (count > ret)
+			count = ret;
+		memcpy(buf, s->s3->tmp.peer_finish_md, count);
+		}
+	return ret;
+	}
+
+
+int SSL_get_verify_mode(SSL *s)
 	{
 	return(s->verify_mode);
 	}
 
-int (*SSL_get_verify_callback(s))()
-SSL *s;
+int SSL_get_verify_depth(SSL *s)
+	{
+	return(s->verify_depth);
+	}
+
+int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
 	{
 	return(s->verify_callback);
 	}
 
-int SSL_CTX_get_verify_mode(ctx)
-SSL_CTX *ctx;
+int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
 	{
-	return(ctx->default_verify_mode);
+	return(ctx->verify_mode);
 	}
 
-int (*SSL_CTX_get_verify_callback(ctx))()
-SSL_CTX *ctx;
+int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
+	{
+	return(ctx->verify_depth);
+	}
+
+int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
 	{
 	return(ctx->default_verify_callback);
 	}
 
-void SSL_set_verify(s, mode, callback)
-SSL *s;
-int mode;
-int (*callback)();
+void SSL_set_verify(SSL *s,int mode,
+		    int (*callback)(int ok,X509_STORE_CTX *ctx))
 	{
 	s->verify_mode=mode;
 	if (callback != NULL)
 		s->verify_callback=callback;
 	}
 
-void SSL_set_read_ahead(s, yes)
-SSL *s;
-int yes;
+void SSL_set_verify_depth(SSL *s,int depth)
+	{
+	s->verify_depth=depth;
+	}
+
+void SSL_set_read_ahead(SSL *s,int yes)
 	{
 	s->read_ahead=yes;
 	}
 
-int SSL_get_read_ahead(s)
-SSL *s;
+int SSL_get_read_ahead(SSL *s)
 	{
 	return(s->read_ahead);
 	}
 
-int SSL_pending(s)
-SSL *s;
+int SSL_pending(SSL *s)
 	{
 	return(s->method->ssl_pending(s));
 	}
 
-X509 *SSL_get_peer_certificate(s)
-SSL *s;
+X509 *SSL_get_peer_certificate(SSL *s)
 	{
 	X509 *r;
 	
@@ -454,23 +602,21 @@ SSL *s;
 	return(r);
 	}
 
-STACK *SSL_get_peer_cert_chain(s)
-SSL *s;
+STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
 	{
-	STACK *r;
+	STACK_OF(X509) *r;
 	
-	if ((s == NULL) || (s->session == NULL) || (s->session->cert == NULL))
+	if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
 		r=NULL;
 	else
-		r=s->session->cert->cert_chain;
+		r=s->session->sess_cert->cert_chain;
 
 	return(r);
 	}
 
 /* Now in theory, since the calling process own 't' it should be safe to
  * modify.  We need to be able to read f without being hassled */
-void SSL_copy_session_id(t,f)
-SSL *t,*f;
+void SSL_copy_session_id(SSL *t,SSL *f)
 	{
 	CERT *tmp;
 
@@ -495,30 +641,29 @@ SSL *t,*f;
 	else
 		t->cert=NULL;
 	if (tmp != NULL) ssl_cert_free(tmp);
+	SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
 	}
 
 /* Fix this so it checks all the valid key/cert options */
-int SSL_CTX_check_private_key(ctx)
-SSL_CTX *ctx;
+int SSL_CTX_check_private_key(SSL_CTX *ctx)
 	{
 	if (	(ctx == NULL) ||
-		(ctx->default_cert == NULL) ||
-		(ctx->default_cert->key->x509 == NULL))
+		(ctx->cert == NULL) ||
+		(ctx->cert->key->x509 == NULL))
 		{
 		SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
 		return(0);
 		}
-	if 	(ctx->default_cert->key->privatekey == NULL)
+	if 	(ctx->cert->key->privatekey == NULL)
 		{
 		SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
 		return(0);
 		}
-	return(X509_check_private_key(ctx->default_cert->key->x509, ctx->default_cert->key->privatekey));
+	return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
 	}
 
 /* Fix this function so that it takes an optional type parameter */
-int SSL_check_private_key(ssl)
-SSL *ssl;
+int SSL_check_private_key(SSL *ssl)
 	{
 	if (ssl == NULL)
 		{
@@ -526,7 +671,10 @@ SSL *ssl;
 		return(0);
 		}
 	if (ssl->cert == NULL)
-		return(SSL_CTX_check_private_key(ssl->ctx));
+		{
+                SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
+		return 0;
+		}
 	if (ssl->cert->key->x509 == NULL)
 		{
 		SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
@@ -541,29 +689,37 @@ SSL *ssl;
 		ssl->cert->key->privatekey));
 	}
 
-int SSL_accept(s)
-SSL *s;
+int SSL_accept(SSL *s)
 	{
+	if (s->handshake_func == 0)
+		/* Not properly initialized yet */
+		SSL_set_accept_state(s);
+
 	return(s->method->ssl_accept(s));
 	}
 
-int SSL_connect(s)
-SSL *s;
+int SSL_connect(SSL *s)
 	{
+	if (s->handshake_func == 0)
+		/* Not properly initialized yet */
+		SSL_set_connect_state(s);
+
 	return(s->method->ssl_connect(s));
 	}
 
-long SSL_get_default_timeout(s)
-SSL *s;
+long SSL_get_default_timeout(SSL *s)
 	{
 	return(s->method->get_timeout());
 	}
 
-int SSL_read(s,buf,num)
-SSL *s;
-char *buf;
-int num;
+int SSL_read(SSL *s,char *buf,int num)
 	{
+	if (s->handshake_func == 0)
+		{
+		SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
+		return -1;
+		}
+
 	if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 		{
 		s->rwstate=SSL_NOTHING;
@@ -572,10 +728,7 @@ int num;
 	return(s->method->ssl_read(s,buf,num));
 	}
 
-int SSL_peek(s,buf,num)
-SSL *s;
-char *buf;
-int num;
+int SSL_peek(SSL *s,char *buf,int num)
 	{
 	if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
 		{
@@ -584,11 +737,14 @@ int num;
 	return(s->method->ssl_peek(s,buf,num));
 	}
 
-int SSL_write(s,buf,num)
-SSL *s;
-char *buf;
-int num;
+int SSL_write(SSL *s,const char *buf,int num)
 	{
+	if (s->handshake_func == 0)
+		{
+		SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
+		return -1;
+		}
+
 	if (s->shutdown & SSL_SENT_SHUTDOWN)
 		{
 		s->rwstate=SSL_NOTHING;
@@ -598,42 +754,131 @@ int num;
 	return(s->method->ssl_write(s,buf,num));
 	}
 
-int SSL_shutdown(s)
-SSL *s;
+int SSL_shutdown(SSL *s)
 	{
+	/* Note that this function behaves differently from what one might
+	 * expect.  Return values are 0 for no success (yet),
+	 * 1 for success; but calling it once is usually not enough,
+	 * even if blocking I/O is used (see ssl3_shutdown).
+	 */
+
+	if (s->handshake_func == 0)
+		{
+		SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
+		return -1;
+		}
+
 	if ((s != NULL) && !SSL_in_init(s))
 		return(s->method->ssl_shutdown(s));
 	else
 		return(1);
 	}
 
-int SSL_renegotiate(s)
-SSL *s;
+int SSL_renegotiate(SSL *s)
 	{
 	s->new_session=1;
 	return(s->method->ssl_renegotiate(s));
 	}
 
-long SSL_ctrl(s,cmd,larg,parg)
-SSL *s;
-int cmd;
-long larg;
-char *parg;
+long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
 	{
-	return(s->method->ssl_ctrl(s,cmd,larg,parg));
+	long l;
+
+	switch (cmd)
+		{
+	case SSL_CTRL_GET_READ_AHEAD:
+		return(s->read_ahead);
+	case SSL_CTRL_SET_READ_AHEAD:
+		l=s->read_ahead;
+		s->read_ahead=larg;
+		return(l);
+	case SSL_CTRL_OPTIONS:
+		return(s->options|=larg);
+	case SSL_CTRL_MODE:
+		return(s->mode|=larg);
+	default:
+		return(s->method->ssl_ctrl(s,cmd,larg,parg));
+		}
 	}
 
-long SSL_CTX_ctrl(ctx,cmd,larg,parg)
-SSL_CTX *ctx;
-int cmd;
-long larg;
-char *parg;
+long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
 	{
-	return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
+	switch(cmd)
+		{
+	default:
+		return(s->method->ssl_callback_ctrl(s,cmd,fp));
+		}
 	}
 
-int ssl_cipher_id_cmp(a,b)
-SSL_CIPHER *a,*b;
+long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
+	{
+	long l;
+
+	switch (cmd)
+		{
+	case SSL_CTRL_GET_READ_AHEAD:
+		return(ctx->read_ahead);
+	case SSL_CTRL_SET_READ_AHEAD:
+		l=ctx->read_ahead;
+		ctx->read_ahead=larg;
+		return(l);
+
+	case SSL_CTRL_SET_SESS_CACHE_SIZE:
+		l=ctx->session_cache_size;
+		ctx->session_cache_size=larg;
+		return(l);
+	case SSL_CTRL_GET_SESS_CACHE_SIZE:
+		return(ctx->session_cache_size);
+	case SSL_CTRL_SET_SESS_CACHE_MODE:
+		l=ctx->session_cache_mode;
+		ctx->session_cache_mode=larg;
+		return(l);
+	case SSL_CTRL_GET_SESS_CACHE_MODE:
+		return(ctx->session_cache_mode);
+
+	case SSL_CTRL_SESS_NUMBER:
+		return(ctx->sessions->num_items);
+	case SSL_CTRL_SESS_CONNECT:
+		return(ctx->stats.sess_connect);
+	case SSL_CTRL_SESS_CONNECT_GOOD:
+		return(ctx->stats.sess_connect_good);
+	case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
+		return(ctx->stats.sess_connect_renegotiate);
+	case SSL_CTRL_SESS_ACCEPT:
+		return(ctx->stats.sess_accept);
+	case SSL_CTRL_SESS_ACCEPT_GOOD:
+		return(ctx->stats.sess_accept_good);
+	case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
+		return(ctx->stats.sess_accept_renegotiate);
+	case SSL_CTRL_SESS_HIT:
+		return(ctx->stats.sess_hit);
+	case SSL_CTRL_SESS_CB_HIT:
+		return(ctx->stats.sess_cb_hit);
+	case SSL_CTRL_SESS_MISSES:
+		return(ctx->stats.sess_miss);
+	case SSL_CTRL_SESS_TIMEOUTS:
+		return(ctx->stats.sess_timeout);
+	case SSL_CTRL_SESS_CACHE_FULL:
+		return(ctx->stats.sess_cache_full);
+	case SSL_CTRL_OPTIONS:
+		return(ctx->options|=larg);
+	case SSL_CTRL_MODE:
+		return(ctx->mode|=larg);
+	default:
+		return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
+		}
+	}
+
+long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
+	{
+	switch(cmd)
+		{
+	default:
+		return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
+		}
+	}
+
+int ssl_cipher_id_cmp(SSL_CIPHER *a,SSL_CIPHER *b)
 	{
 	long l;
 
@@ -644,8 +889,7 @@ SSL_CIPHER *a,*b;
 		return((l > 0)?1:-1);
 	}
 
-int ssl_cipher_ptr_id_cmp(ap,bp)
-SSL_CIPHER **ap,**bp;
+int ssl_cipher_ptr_id_cmp(SSL_CIPHER **ap,SSL_CIPHER **bp)
 	{
 	long l;
 
@@ -656,10 +900,9 @@ SSL_CIPHER **ap,**bp;
 		return((l > 0)?1:-1);
 	}
 
-/* return a STACK of the ciphers available for the SSL and in order of
+/** return a STACK of the ciphers available for the SSL and in order of
  * preference */
-STACK *SSL_get_ciphers(s)
-SSL *s;
+STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
 	{
 	if ((s != NULL) && (s->cipher_list != NULL))
 		{
@@ -673,10 +916,9 @@ SSL *s;
 	return(NULL);
 	}
 
-/* return a STACK of the ciphers available for the SSL and in order of
+/** return a STACK of the ciphers available for the SSL and in order of
  * algorithm id */
-STACK *ssl_get_ciphers_by_id(s)
-SSL *s;
+STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
 	{
 	if ((s != NULL) && (s->cipher_list_by_id != NULL))
 		{
@@ -690,29 +932,25 @@ SSL *s;
 	return(NULL);
 	}
 
-/* The old interface to get the same thing as SSL_get_ciphers() */
-char *SSL_get_cipher_list(s,n)
-SSL *s;
-int n;
+/** The old interface to get the same thing as SSL_get_ciphers() */
+const char *SSL_get_cipher_list(SSL *s,int n)
 	{
 	SSL_CIPHER *c;
-	STACK *sk;
+	STACK_OF(SSL_CIPHER) *sk;
 
 	if (s == NULL) return(NULL);
 	sk=SSL_get_ciphers(s);
-	if ((sk == NULL) || (sk_num(sk) <= n))
+	if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
 		return(NULL);
-	c=(SSL_CIPHER *)sk_value(sk,n);
+	c=sk_SSL_CIPHER_value(sk,n);
 	if (c == NULL) return(NULL);
 	return(c->name);
 	}
 
-/* specify the ciphers to be used by defaut by the SSL_CTX */
-int SSL_CTX_set_cipher_list(ctx,str)
-SSL_CTX *ctx;
-char *str;
+/** specify the ciphers to be used by default by the SSL_CTX */
+int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
 	{
-	STACK *sk;
+	STACK_OF(SSL_CIPHER) *sk;
 	
 	sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
 		&ctx->cipher_list_by_id,str);
@@ -720,12 +958,10 @@ char *str;
 	return((sk == NULL)?0:1);
 	}
 
-/* specify the ciphers to be used by the SSL */
-int SSL_set_cipher_list(s, str)
-SSL *s;
-char *str;
+/** specify the ciphers to be used by the SSL */
+int SSL_set_cipher_list(SSL *s,const char *str)
 	{
-	STACK *sk;
+	STACK_OF(SSL_CIPHER) *sk;
 	
 	sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
 		&s->cipher_list_by_id,str);
@@ -734,13 +970,11 @@ char *str;
 	}
 
 /* works well for SSLv2, not so good for SSLv3 */
-char *SSL_get_shared_ciphers(s,buf,len)
-SSL *s;
-char *buf;
-int len;
+char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
 	{
-	char *p,*cp;
-	STACK *sk;
+	char *p;
+	const char *cp;
+	STACK_OF(SSL_CIPHER) *sk;
 	SSL_CIPHER *c;
 	int i;
 
@@ -750,11 +984,11 @@ int len;
 
 	p=buf;
 	sk=s->session->ciphers;
-	for (i=0; i<sk_num(sk); i++)
+	for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
 		{
 		/* Decrement for either the ':' or a '\0' */
 		len--;
-		c=(SSL_CIPHER *)sk_value(sk,i);
+		c=sk_SSL_CIPHER_value(sk,i);
 		for (cp=c->name; *cp; )
 			{
 			if (len-- == 0)
@@ -771,10 +1005,7 @@ int len;
 	return(buf);
 	}
 
-int ssl_cipher_list_to_bytes(s,sk,p)
-SSL *s;
-STACK *sk;
-unsigned char *p;
+int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
 	{
 	int i,j=0;
 	SSL_CIPHER *c;
@@ -783,23 +1014,20 @@ unsigned char *p;
 	if (sk == NULL) return(0);
 	q=p;
 
-	for (i=0; i<sk_num(sk); i++)
+	for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
 		{
-		c=(SSL_CIPHER *)sk_value(sk,i);
+		c=sk_SSL_CIPHER_value(sk,i);
 		j=ssl_put_cipher_by_char(s,c,p);
 		p+=j;
 		}
 	return(p-q);
 	}
 
-STACK *ssl_bytes_to_cipher_list(s,p,num,skp)
-SSL *s;
-unsigned char *p;
-int num;
-STACK **skp;
+STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
+					       STACK_OF(SSL_CIPHER) **skp)
 	{
 	SSL_CIPHER *c;
-	STACK *sk;
+	STACK_OF(SSL_CIPHER) *sk;
 	int i,n;
 
 	n=ssl_put_cipher_by_char(s,NULL,NULL);
@@ -809,11 +1037,11 @@ STACK **skp;
 		return(NULL);
 		}
 	if ((skp == NULL) || (*skp == NULL))
-		sk=sk_new(NULL); /* change perhaps later */
+		sk=sk_SSL_CIPHER_new(NULL); /* change perhaps later */
 	else
 		{
 		sk= *skp;
-		sk_zero(sk);
+		sk_SSL_CIPHER_zero(sk);
 		}
 
 	for (i=0; i<num; i+=n)
@@ -822,7 +1050,7 @@ STACK **skp;
 		p+=n;
 		if (c != NULL)
 			{
-			if (!sk_push(sk,(char *)c))
+			if (!sk_SSL_CIPHER_push(sk,c))
 				{
 				SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
 				goto err;
@@ -835,12 +1063,11 @@ STACK **skp;
 	return(sk);
 err:
 	if ((skp == NULL) || (*skp == NULL))
-		sk_free(sk);
+		sk_SSL_CIPHER_free(sk);
 	return(NULL);
 	}
 
-unsigned long SSL_SESSION_hash(a)
-SSL_SESSION *a;
+unsigned long SSL_SESSION_hash(SSL_SESSION *a)
 	{
 	unsigned long l;
 
@@ -852,9 +1079,7 @@ SSL_SESSION *a;
 	return(l);
 	}
 
-int SSL_SESSION_cmp(a, b)
-SSL_SESSION *a;
-SSL_SESSION *b;
+int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
 	{
 	if (a->ssl_version != b->ssl_version)
 		return(1);
@@ -863,8 +1088,7 @@ SSL_SESSION *b;
 	return(memcmp(a->session_id,b->session_id,a->session_id_length));
 	}
 
-SSL_CTX *SSL_CTX_new(meth)
-SSL_METHOD *meth;
+SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
 	{
 	SSL_CTX *ret=NULL;
 	
@@ -900,17 +1124,7 @@ SSL_METHOD *meth;
 	ret->remove_session_cb=NULL;
 	ret->get_session_cb=NULL;
 
-	ret->sess_connect=0;
-	ret->sess_connect_good=0;
-	ret->sess_accept=0;
-	ret->sess_accept_renegotiate=0;
-	ret->sess_connect_renegotiate=0;
-	ret->sess_accept_good=0;
-	ret->sess_miss=0;
-	ret->sess_timeout=0;
-	ret->sess_cache_full=0;
-	ret->sess_hit=0;
-	ret->sess_cb_hit=0;
+	memset((char *)&ret->stats,0,sizeof(ret->stats));
 
 	ret->references=1;
 	ret->quiet_shutdown=0;
@@ -926,13 +1140,15 @@ SSL_METHOD *meth;
 	ret->app_verify_callback=NULL;
 	ret->app_verify_arg=NULL;
 
-	ret->default_read_ahead=0;
-	ret->default_verify_mode=SSL_VERIFY_NONE;
+	ret->read_ahead=0;
+	ret->verify_mode=SSL_VERIFY_NONE;
+	ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
 	ret->default_verify_callback=NULL;
-	if ((ret->default_cert=ssl_cert_new()) == NULL)
+	if ((ret->cert=ssl_cert_new()) == NULL)
 		goto err;
 
 	ret->default_passwd_callback=NULL;
+	ret->default_passwd_callback_userdata=NULL;
 	ret->client_cert_cb=NULL;
 
 	ret->sessions=lh_new(SSL_SESSION_hash,SSL_SESSION_cmp);
@@ -943,7 +1159,8 @@ SSL_METHOD *meth;
 	ssl_create_cipher_list(ret->method,
 		&ret->cipher_list,&ret->cipher_list_by_id,
 		SSL_DEFAULT_CIPHER_LIST);
-	if ((ret->cipher_list == NULL) || (sk_num(ret->cipher_list) <= 0))
+	if (ret->cipher_list == NULL
+	    || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
 		{
 		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
 		goto err2;
@@ -965,12 +1182,13 @@ SSL_METHOD *meth;
 		goto err2;
 		}
 
-	if ((ret->client_CA=sk_new_null()) == NULL)
+	if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
 		goto err;
 
 	CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
 
 	ret->extra_certs=NULL;
+	ret->comp_methods=SSL_COMP_get_compression_methods();
 
 	return(ret);
 err:
@@ -980,8 +1198,10 @@ err2:
 	return(NULL);
 	}
 
-void SSL_CTX_free(a)
-SSL_CTX *a;
+static void SSL_COMP_free(SSL_COMP *comp)
+    { Free(comp); }
+
+void SSL_CTX_free(SSL_CTX *a)
 	{
 	int i;
 
@@ -1009,98 +1229,108 @@ SSL_CTX *a;
 	if (a->cert_store != NULL)
 		X509_STORE_free(a->cert_store);
 	if (a->cipher_list != NULL)
-		sk_free(a->cipher_list);
+		sk_SSL_CIPHER_free(a->cipher_list);
 	if (a->cipher_list_by_id != NULL)
-		sk_free(a->cipher_list_by_id);
-	if (a->default_cert != NULL)
-		ssl_cert_free(a->default_cert);
+		sk_SSL_CIPHER_free(a->cipher_list_by_id);
+	if (a->cert != NULL)
+		ssl_cert_free(a->cert);
 	if (a->client_CA != NULL)
-		sk_pop_free(a->client_CA,X509_NAME_free);
+		sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
 	if (a->extra_certs != NULL)
-		sk_pop_free(a->extra_certs,X509_free);
-	Free((char *)a);
+		sk_X509_pop_free(a->extra_certs,X509_free);
+	if (a->comp_methods != NULL)
+		sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
+	Free(a);
 	}
 
-void SSL_CTX_set_default_passwd_cb(ctx,cb)
-SSL_CTX *ctx;
-int (*cb)();
+void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
 	{
 	ctx->default_passwd_callback=cb;
 	}
 
-void SSL_CTX_set_cert_verify_cb(ctx,cb,arg)
-SSL_CTX *ctx;
-int (*cb)();
-char *arg;
+void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
 	{
+	ctx->default_passwd_callback_userdata=u;
+	}
+
+void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,int (*cb)(),char *arg)
+	{
+	/* now
+	 *     int (*cb)(X509_STORE_CTX *),
+	 * but should be
+	 *     int (*cb)(X509_STORE_CTX *, void *arg)
+	 */
 	ctx->app_verify_callback=cb;
-	ctx->app_verify_arg=arg;
+	ctx->app_verify_arg=arg; /* never used */
 	}
 
-void SSL_CTX_set_verify(ctx,mode,cb)
-SSL_CTX *ctx;
-int mode;
-int (*cb)();
+void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
 	{
-	ctx->default_verify_mode=mode;
+	ctx->verify_mode=mode;
 	ctx->default_verify_callback=cb;
 	/* This needs cleaning up EAY EAY EAY */
 	X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
 	}
 
-void ssl_set_cert_masks(c)
-CERT *c;
+void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
+	{
+	ctx->verify_depth=depth;
+	}
+
+void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 	{
 	CERT_PKEY *cpk;
 	int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
 	int rsa_enc_export,dh_rsa_export,dh_dsa_export;
-	int rsa_tmp_export,dh_tmp_export;
+	int rsa_tmp_export,dh_tmp_export,kl;
 	unsigned long mask,emask;
 
-	if ((c == NULL) || (c->valid)) return;
+	if (c == NULL) return;
+
+	kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
 
 #ifndef NO_RSA
-	rsa_tmp=((c->rsa_tmp != NULL) || (c->rsa_tmp_cb != NULL))?1:0;
-	rsa_tmp_export=((c->rsa_tmp_cb != NULL) ||
-		(rsa_tmp && (RSA_size(c->rsa_tmp)*8 <= 512)))?1:0;
+	rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
+	rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
+		(rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
 #else
 	rsa_tmp=rsa_tmp_export=0;
 #endif
 #ifndef NO_DH
-	dh_tmp=((c->dh_tmp != NULL) || (c->dh_tmp_cb != NULL))?1:0;
-	dh_tmp_export=((c->dh_tmp_cb != NULL) ||
-		(dh_tmp && (DH_size(c->dh_tmp)*8 <= 512)))?1:0;
+	dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
+	dh_tmp_export=(c->dh_tmp_cb != NULL ||
+		(dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
 #else
 	dh_tmp=dh_tmp_export=0;
 #endif
 
 	cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
-	rsa_enc= ((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
-	rsa_enc_export=(rsa_enc && (EVP_PKEY_size(cpk->privatekey)*8 <= 512))?1:0;
+	rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
+	rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
 	cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
-	rsa_sign=((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
+	rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
 	cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
-	dsa_sign=((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
+	dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
 	cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
-	dh_rsa=  ((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
-	dh_rsa_export=(dh_rsa && (EVP_PKEY_size(cpk->privatekey)*8 <= 512))?1:0;
+	dh_rsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
+	dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
 	cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
 /* FIX THIS EAY EAY EAY */
-	dh_dsa=  ((cpk->x509 != NULL) && (cpk->privatekey != NULL))?1:0;
-	dh_dsa_export=(dh_dsa && (EVP_PKEY_size(cpk->privatekey)*8 <= 512))?1:0;
+	dh_dsa=  (cpk->x509 != NULL && cpk->privatekey != NULL);
+	dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
 
 	mask=0;
 	emask=0;
 
 #ifdef CIPHER_DEBUG
-	printf("rt=%d dht=%d re=%d rs=%d ds=%d dhr=%d dhd=%d\n",
-		rsa_tmp,dh_tmp,
-		rsa_enc,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
+	printf("rt=%d rte=%d dht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
+		rsa_tmp,rsa_tmp_export,dh_tmp,
+		rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
 #endif
 
 	if (rsa_enc || (rsa_tmp && rsa_sign))
 		mask|=SSL_kRSA;
-	if (rsa_enc_export || (rsa_tmp_export && rsa_sign))
+	if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
 		emask|=SSL_kRSA;
 
 #if 0
@@ -1137,10 +1367,8 @@ CERT *c;
 		emask|=SSL_aDSS;
 		}
 
-#ifdef SSL_ALLOW_ADH
 	mask|=SSL_aNULL;
 	emask|=SSL_aNULL;
-#endif
 
 	c->mask=mask;
 	c->export_mask=emask;
@@ -1148,18 +1376,17 @@ CERT *c;
 	}
 
 /* THIS NEEDS CLEANING UP */
-X509 *ssl_get_server_send_cert(s)
-SSL *s;
+X509 *ssl_get_server_send_cert(SSL *s)
 	{
 	unsigned long alg,mask,kalg;
 	CERT *c;
-	int i,export;
+	int i,is_export;
 
 	c=s->cert;
-	ssl_set_cert_masks(c);
+	ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
 	alg=s->s3->tmp.new_cipher->algorithms;
-	export=(alg & SSL_EXPORT)?1:0;
-	mask=(export)?c->export_mask:c->mask;
+	is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
+	mask=is_export?c->export_mask:c->mask;
 	kalg=alg&(SSL_MKEY_MASK|SSL_AUTH_MASK);
 
 	if 	(kalg & SSL_kDHr)
@@ -1184,9 +1411,7 @@ SSL *s;
 	return(c->pkeys[i].x509);
 	}
 
-EVP_PKEY *ssl_get_sign_pkey(s,cipher)
-SSL *s;
-SSL_CIPHER *cipher;
+EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
 	{
 	unsigned long alg;
 	CERT *c;
@@ -1213,9 +1438,7 @@ SSL_CIPHER *cipher;
 		}
 	}
 
-void ssl_update_cache(s,mode)
-SSL *s;
-int mode;
+void ssl_update_cache(SSL *s,int mode)
 	{
 	int i;
 
@@ -1239,23 +1462,20 @@ int mode;
 		((i & mode) == mode))
 		{
 		if (  (((mode & SSL_SESS_CACHE_CLIENT)
-			?s->ctx->sess_connect_good
-			:s->ctx->sess_accept_good) & 0xff) == 0xff)
+			?s->ctx->stats.sess_connect_good
+			:s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
 			{
 			SSL_CTX_flush_sessions(s->ctx,time(NULL));
 			}
 		}
 	}
 
-SSL_METHOD *SSL_get_ssl_method(s)
-SSL *s;
+SSL_METHOD *SSL_get_ssl_method(SSL *s)
 	{
 	return(s->method);
 	}
 
-int SSL_set_ssl_method(s,meth)
-SSL *s;
-SSL_METHOD *meth;
+int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
 	{
 	int conn= -1;
 	int ret=1;
@@ -1282,17 +1502,23 @@ SSL_METHOD *meth;
 	return(ret);
 	}
 
-int SSL_get_error(s,i)
-SSL *s;
-int i;
+int SSL_get_error(SSL *s,int i)
 	{
 	int reason;
+	unsigned long l;
 	BIO *bio;
 
 	if (i > 0) return(SSL_ERROR_NONE);
 
-	if (ERR_peek_error() != 0)
-		return(SSL_ERROR_SSL);
+	/* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
+	 * etc, where we do encode the error */
+	if ((l=ERR_peek_error()) != 0)
+		{
+		if (ERR_GET_LIB(l) == ERR_LIB_SYS)
+			return(SSL_ERROR_SYSCALL);
+		else
+			return(SSL_ERROR_SSL);
+		}
 
 	if ((i < 0) && SSL_want_read(s))
 		{
@@ -1300,6 +1526,15 @@ int i;
 		if (BIO_should_read(bio))
 			return(SSL_ERROR_WANT_READ);
 		else if (BIO_should_write(bio))
+			/* This one doesn't make too much sense ... We never try
+			 * to write to the rbio, and an application program where
+			 * rbio and wbio are separate couldn't even know what it
+			 * should wait for.
+			 * However if we ever set s->rwstate incorrectly
+			 * (so that we have SSL_want_read(s) instead of
+			 * SSL_want_write(s)) and rbio and wbio *are* the same,
+			 * this test works around that bug; so it might be safer
+			 * to keep it. */
 			return(SSL_ERROR_WANT_WRITE);
 		else if (BIO_should_io_special(bio))
 			{
@@ -1317,6 +1552,7 @@ int i;
 		if (BIO_should_write(bio))
 			return(SSL_ERROR_WANT_WRITE);
 		else if (BIO_should_read(bio))
+			/* See above (SSL_want_read(s) with BIO_should_write(bio)) */
 			return(SSL_ERROR_WANT_READ);
 		else if (BIO_should_io_special(bio))
 			{
@@ -1349,8 +1585,7 @@ int i;
 	return(SSL_ERROR_SYSCALL);
 	}
 
-int SSL_do_handshake(s)
-SSL *s;
+int SSL_do_handshake(SSL *s)
 	{
 	int ret=1;
 
@@ -1371,9 +1606,9 @@ SSL *s;
 
 /* For the next 2 functions, SSL_clear() sets shutdown and so
  * one of these calls will reset it */
-void SSL_set_accept_state(s)
-SSL *s;
+void SSL_set_accept_state(SSL *s)
 	{
+	s->server=1;
 	s->shutdown=0;
 	s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
 	s->handshake_func=s->method->ssl_accept;
@@ -1381,9 +1616,9 @@ SSL *s;
 	ssl_clear_cipher_ctx(s);
 	}
 
-void SSL_set_connect_state(s)
-SSL *s;
+void SSL_set_connect_state(SSL *s)
 	{
+	s->server=0;
 	s->shutdown=0;
 	s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
 	s->handshake_func=s->method->ssl_connect;
@@ -1391,22 +1626,19 @@ SSL *s;
 	ssl_clear_cipher_ctx(s);
 	}
 
-int ssl_undefined_function(s)
-SSL *s;
+int ssl_undefined_function(SSL *s)
 	{
 	SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 	return(0);
 	}
 
-SSL_METHOD *ssl_bad_method(ver)
-int ver;
+SSL_METHOD *ssl_bad_method(int ver)
 	{
 	SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 	return(NULL);
 	}
 
-char *SSL_get_version(s)
-SSL *s;
+const char *SSL_get_version(SSL *s)
 	{
 	if (s->version == TLS1_VERSION)
 		return("TLSv1");
@@ -1418,22 +1650,46 @@ SSL *s;
 		return("unknown");
 	}
 
-SSL *SSL_dup(s)
-SSL *s;
-        {
-	STACK *sk;
+SSL *SSL_dup(SSL *s)
+	{
+	STACK_OF(X509_NAME) *sk;
 	X509_NAME *xn;
-        SSL *ret;
+	SSL *ret;
 	int i;
 		 
-	if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL) return(NULL);
+	if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
+	    return(NULL);
 			  
-	/* This copies version, session-id, SSL_METHOD and 'cert' */
-	SSL_copy_session_id(ret,s);
+	if (s->session != NULL)
+		{
+		/* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
+		SSL_copy_session_id(ret,s);
+		}
+	else
+		{
+		/* No session has been established yet, so we have to expect
+		 * that s->cert or ret->cert will be changed later --
+		 * they should not both point to the same object,
+		 * and thus we can't use SSL_copy_session_id. */
+
+		ret->method = s->method;
+		ret->method->ssl_new(ret);
+
+		if (s->cert != NULL)
+			{
+			ret->cert = ssl_cert_dup(s->cert);
+			if (ret->cert == NULL)
+				goto err;
+			}
+				
+		SSL_set_session_id_context(ret,
+			s->sid_ctx, s->sid_ctx_length);
+		}
 
 	SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
 	SSL_set_verify(ret,SSL_get_verify_mode(s),
 		SSL_get_verify_callback(s));
+	SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
 
 	SSL_set_info_callback(ret,SSL_get_info_callback(s));
 	
@@ -1464,23 +1720,23 @@ SSL *s;
 	/* dup the cipher_list and cipher_list_by_id stacks */
 	if (s->cipher_list != NULL)
 		{
-		if ((ret->cipher_list=sk_dup(s->cipher_list)) == NULL)
+		if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
 			goto err;
 		}
 	if (s->cipher_list_by_id != NULL)
-		if ((ret->cipher_list_by_id=sk_dup(s->cipher_list_by_id))
+		if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
 			== NULL)
 			goto err;
 
 	/* Dup the client_CA list */
 	if (s->client_CA != NULL)
 		{
-		if ((sk=sk_dup(s->client_CA)) == NULL) goto err;
+		if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
 		ret->client_CA=sk;
-		for (i=0; i<sk_num(sk); i++)
+		for (i=0; i<sk_X509_NAME_num(sk); i++)
 			{
-			xn=(X509_NAME *)sk_value(sk,i);
-			if ((sk_value(sk,i)=(char *)X509_NAME_dup(xn)) == NULL)
+			xn=sk_X509_NAME_value(sk,i);
+			if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
 				{
 				X509_NAME_free(xn);
 				goto err;
@@ -1491,6 +1747,7 @@ SSL *s;
 	ret->shutdown=s->shutdown;
 	ret->state=s->state;
 	ret->handshake_func=s->handshake_func;
+	ret->server=s->server;
 
 	if (0)
 		{
@@ -1501,26 +1758,34 @@ err:
 	return(ret);
 	}
 
-void ssl_clear_cipher_ctx(s)
-SSL *s;
+void ssl_clear_cipher_ctx(SSL *s)
 	{
-        if (s->enc_read_ctx != NULL)
-                {
-                EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
-                Free(s->enc_read_ctx);
-                s->enc_read_ctx=NULL;
-                }
-        if (s->enc_write_ctx != NULL)
-                {
-                EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
-                Free(s->enc_write_ctx);
-                s->enc_write_ctx=NULL;
-                }
+	if (s->enc_read_ctx != NULL)
+		{
+		EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
+		Free(s->enc_read_ctx);
+		s->enc_read_ctx=NULL;
+		}
+	if (s->enc_write_ctx != NULL)
+		{
+		EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
+		Free(s->enc_write_ctx);
+		s->enc_write_ctx=NULL;
+		}
+	if (s->expand != NULL)
+		{
+		COMP_CTX_free(s->expand);
+		s->expand=NULL;
+		}
+	if (s->compress != NULL)
+		{
+		COMP_CTX_free(s->compress);
+		s->compress=NULL;
+		}
 	}
 
 /* Fix this function so that it takes an optional type parameter */
-X509 *SSL_get_certificate(s)
-SSL *s;
+X509 *SSL_get_certificate(SSL *s)
 	{
 	if (s->cert != NULL)
 		return(s->cert->key->x509);
@@ -1529,8 +1794,7 @@ SSL *s;
 	}
 
 /* Fix this function so that it takes an optional type parameter */
-EVP_PKEY *SSL_get_privatekey(s)
-SSL *s;
+EVP_PKEY *SSL_get_privatekey(SSL *s)
 	{
 	if (s->cert != NULL)
 		return(s->cert->key->privatekey);
@@ -1538,17 +1802,14 @@ SSL *s;
 		return(NULL);
 	}
 
-SSL_CIPHER *SSL_get_current_cipher(s)
-SSL *s;
+SSL_CIPHER *SSL_get_current_cipher(SSL *s)
 	{
-        if ((s->session != NULL) && (s->session->cipher != NULL))
-                return(s->session->cipher);
-        return(NULL);
+	if ((s->session != NULL) && (s->session->cipher != NULL))
+		return(s->session->cipher);
+	return(NULL);
 	}
 
-int ssl_init_wbio_buffer(s,push)
-SSL *s;
-int push;
+int ssl_init_wbio_buffer(SSL *s,int push)
 	{
 	BIO *bbio;
 
@@ -1564,7 +1825,7 @@ int push;
 		if (s->bbio == s->wbio)
 			s->wbio=BIO_pop(s->wbio);
 		}
-	BIO_reset(bbio);
+	(void)BIO_reset(bbio);
 /*	if (!BIO_set_write_buffer_size(bbio,16*1024)) */
 	if (!BIO_set_read_buffer_size(bbio,1))
 		{
@@ -1583,167 +1844,222 @@ int push;
 		}
 	return(1);
 	}
+
+void ssl_free_wbio_buffer(SSL *s)
+	{
+	BIO *under;
+
+	if (s->bbio == NULL) return;
+
+	if (s->bbio == s->wbio)
+		{
+		/* remove buffering */
+		under=BIO_pop(s->wbio);
+		if (under != NULL)
+			s->wbio=under;
+		else
+			abort(); /* ok */
+		}
+	BIO_free(s->bbio);
+	s->bbio=NULL;
+	}
 	
-void SSL_CTX_set_quiet_shutdown(ctx,mode)
-SSL_CTX *ctx;
-int mode;
+void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
 	{
 	ctx->quiet_shutdown=mode;
 	}
 
-int SSL_CTX_get_quiet_shutdown(ctx)
-SSL_CTX *ctx;
+int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
 	{
 	return(ctx->quiet_shutdown);
 	}
 
-void SSL_set_quiet_shutdown(s,mode)
-SSL *s;
-int mode;
+void SSL_set_quiet_shutdown(SSL *s,int mode)
 	{
 	s->quiet_shutdown=mode;
 	}
 
-int SSL_get_quiet_shutdown(s)
-SSL *s;
+int SSL_get_quiet_shutdown(SSL *s)
 	{
 	return(s->quiet_shutdown);
 	}
 
-void SSL_set_shutdown(s,mode)
-SSL *s;
-int mode;
+void SSL_set_shutdown(SSL *s,int mode)
 	{
 	s->shutdown=mode;
 	}
 
-int SSL_get_shutdown(s)
-SSL *s;
+int SSL_get_shutdown(SSL *s)
 	{
 	return(s->shutdown);
 	}
 
-int SSL_version(s)
-SSL *s;
+int SSL_version(SSL *s)
 	{
 	return(s->version);
 	}
 
-SSL_CTX *SSL_get_SSL_CTX(ssl)
-SSL *ssl;
+SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
 	{
 	return(ssl->ctx);
 	}
 
 #ifndef NO_STDIO
-int SSL_CTX_set_default_verify_paths(ctx)
-SSL_CTX *ctx;
+int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
 	{
 	return(X509_STORE_set_default_paths(ctx->cert_store));
 	}
 
-int SSL_CTX_load_verify_locations(ctx,CAfile,CApath)
-SSL_CTX *ctx;
-char *CAfile;
-char *CApath;
+int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
+		const char *CApath)
 	{
 	return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
 	}
 #endif
 
-void SSL_set_info_callback(ssl,cb)
-SSL *ssl;
-void (*cb)();
+void SSL_set_info_callback(SSL *ssl,void (*cb)())
 	{
 	ssl->info_callback=cb;
 	}
 
-void (*SSL_get_info_callback(ssl))()
-SSL *ssl;
+void (*SSL_get_info_callback(SSL *ssl))(void)
 	{
 	return((void (*)())ssl->info_callback);
 	}
 
-int SSL_state(ssl)
-SSL *ssl;
+int SSL_state(SSL *ssl)
 	{
 	return(ssl->state);
 	}
 
-void SSL_set_verify_result(ssl,arg)
-SSL *ssl;
-long arg;
+void SSL_set_verify_result(SSL *ssl,long arg)
 	{
 	ssl->verify_result=arg;
 	}
 
-long SSL_get_verify_result(ssl)
-SSL *ssl;
+long SSL_get_verify_result(SSL *ssl)
 	{
 	return(ssl->verify_result);
 	}
 
-int SSL_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
-long argl;
-char *argp;
-int (*new_func)();
-int (*dup_func)();
-void (*free_func)();
-        {
+int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
+			 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
+	{
 	ssl_meth_num++;
 	return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
 		&ssl_meth,argl,argp,new_func,dup_func,free_func));
-        }
+	}
 
-int SSL_set_ex_data(s,idx,arg)
-SSL *s;
-int idx;
-char *arg;
+int SSL_set_ex_data(SSL *s,int idx,void *arg)
 	{
 	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
 	}
 
-char *SSL_get_ex_data(s,idx)
-SSL *s;
-int idx;
+void *SSL_get_ex_data(SSL *s,int idx)
 	{
 	return(CRYPTO_get_ex_data(&s->ex_data,idx));
 	}
 
-int SSL_CTX_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
-long argl;
-char *argp;
-int (*new_func)();
-int (*dup_func)();
-void (*free_func)();
-        {
+int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
+			     CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
+	{
 	ssl_ctx_meth_num++;
 	return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
 		&ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
-        }
+	}
 
-int SSL_CTX_set_ex_data(s,idx,arg)
-SSL_CTX *s;
-int idx;
-char *arg;
+int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
 	{
 	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
 	}
 
-char *SSL_CTX_get_ex_data(s,idx)
-SSL_CTX *s;
-int idx;
+void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
 	{
 	return(CRYPTO_get_ex_data(&s->ex_data,idx));
 	}
 
-int ssl_ok(s)
-SSL *s;
+int ssl_ok(SSL *s)
 	{
 	return(1);
 	}
 
+X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
+	{
+	return(ctx->cert_store);
+	}
+
+void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
+	{
+	if (ctx->cert_store != NULL)
+		X509_STORE_free(ctx->cert_store);
+	ctx->cert_store=store;
+	}
+
+int SSL_want(SSL *s)
+	{
+	return(s->rwstate);
+	}
+
+/*!
+ * \brief Set the callback for generating temporary RSA keys.
+ * \param ctx the SSL context.
+ * \param cb the callback
+ */
+
+#ifndef NO_RSA
+void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
+							  int is_export,
+							  int keylength))
+    {
+    SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
+    }
+
+void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
+						  int is_export,
+						  int keylength))
+    {
+    SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)())cb);
+    }
+#endif
+
+#ifdef DOXYGEN
+/*!
+ * \brief The RSA temporary key callback function.
+ * \param ssl the SSL session.
+ * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
+ * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
+ * of the required key in bits.
+ * \return the temporary RSA key.
+ * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
+ */
+
+RSA *cb(SSL *ssl,int is_export,int keylength)
+    {}
+#endif
+
+/*!
+ * \brief Set the callback for generating temporary DH keys.
+ * \param ctx the SSL context.
+ * \param dh the callback
+ */
+
+#ifndef NO_DH
+void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
+							int keylength))
+    {
+    SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
+    }
+
+void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
+						int keylength))
+    {
+    SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)())dh);
+    }
+#endif
+
 #if defined(_WINDLL) && defined(WIN16)
 #include "../crypto/bio/bss_file.c"
 #endif
 
+IMPLEMENT_STACK_OF(SSL_CIPHER)
+IMPLEMENT_STACK_OF(SSL_COMP)