X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fssl_lib.c;h=091195f79040b9f1698f6badb04fdfbb6f8f5d51;hp=eda3cfd11631854399b85f41dbf3e13108b08080;hb=6657b9c73acfddc9b3fe86da0ee63494c7826742;hpb=7ef524ea1cc26f3f992235156e43d15e8bb6b244

diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index eda3cfd116..091195f790 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -58,7 +58,7 @@
  * [including the GNU Public Licence.]
  */
 /* ====================================================================
- * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -115,6 +115,32 @@
  * ECC cipher suite support in OpenSSL originally developed by 
  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
  */
+/* ====================================================================
+ * Copyright 2005 Nokia. All rights reserved.
+ *
+ * The portions of the attached software ("Contribution") is developed by
+ * Nokia Corporation and is licensed pursuant to the OpenSSL open source
+ * license.
+ *
+ * The Contribution, originally written by Mika Kousa and Pasi Eronen of
+ * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
+ * support (see RFC 4279) to OpenSSL.
+ *
+ * No patent licenses or other rights except those expressly stated in
+ * the OpenSSL open source license shall be deemed granted or received
+ * expressly, by implication, estoppel, or otherwise.
+ *
+ * No assurances are provided by Nokia that the Contribution does not
+ * infringe the patent or other intellectual property rights of any third
+ * party or that the license provides you with all the necessary rights
+ * to make use of the Contribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
+ * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
+ * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
+ * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
+ * OTHERWISE.
+ */
 
 #ifdef REF_CHECK
 #  include <assert.h>
@@ -125,17 +151,27 @@
 #include <openssl/objects.h>
 #include <openssl/lhash.h>
 #include <openssl/x509v3.h>
+#ifndef OPENSSL_NO_DH
+#include <openssl/dh.h>
+#endif
 
 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 
-OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
+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
+	(int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function,
+	0,	/* finish_mac_length */
+	(int (*)(SSL *, EVP_MD_CTX *, unsigned char *))ssl_undefined_function,
+	NULL,	/* client_finished_label */
+	0,	/* client_finished_label_len */
+	NULL,	/* server_finished_label */
+	0,	/* server_finished_label_len */
+	(int (*)(int))ssl_undefined_function
 	};
 
 int SSL_clear(SSL *s)
@@ -209,7 +245,7 @@ int SSL_clear(SSL *s)
 	}
 
 /** Used to change an SSL_CTXs default SSL method type */
-int SSL_CTX_set_ssl_version(SSL_CTX *ctx,SSL_METHOD *meth)
+int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
 	{
 	STACK_OF(SSL_CIPHER) *sk;
 
@@ -275,17 +311,32 @@ SSL *SSL_new(SSL_CTX *ctx)
 	s->msg_callback=ctx->msg_callback;
 	s->msg_callback_arg=ctx->msg_callback_arg;
 	s->verify_mode=ctx->verify_mode;
+#if 0
 	s->verify_depth=ctx->verify_depth;
+#endif
 	s->sid_ctx_length=ctx->sid_ctx_length;
+	OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
 	memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
 	s->verify_callback=ctx->default_verify_callback;
 	s->generate_session_id=ctx->generate_session_id;
+
+	s->param = X509_VERIFY_PARAM_new();
+	if (!s->param)
+		goto err;
+	X509_VERIFY_PARAM_inherit(s->param, ctx->param);
+#if 0
 	s->purpose = ctx->purpose;
 	s->trust = ctx->trust;
+#endif
 	s->quiet_shutdown=ctx->quiet_shutdown;
+	s->max_send_fragment = ctx->max_send_fragment;
 
 	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
 	s->ctx=ctx;
+#ifndef OPENSSL_NO_TLSEXT
+	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
+	s->initial_ctx=ctx;
+#endif
 
 	s->verify_result=X509_V_OK;
 
@@ -301,6 +352,11 @@ SSL *SSL_new(SSL_CTX *ctx)
 
 	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 
+#ifndef OPENSSL_NO_PSK
+	s->psk_client_callback=ctx->psk_client_callback;
+	s->psk_server_callback=ctx->psk_server_callback;
+#endif
+
 	return(s);
 err:
 	if (s != NULL)
@@ -318,7 +374,7 @@ err:
 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)
+    if(sid_ctx_len > sizeof ctx->sid_ctx)
 	{
 	SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
 	return 0;
@@ -368,6 +424,10 @@ int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 	 * any new session built out of this id/id_len and the ssl_version in
 	 * use by this SSL. */
 	SSL_SESSION r, *p;
+
+	if(id_len > sizeof r.session_id)
+		return 0;
+
 	r.ssl_version = ssl->version;
 	r.session_id_length = id_len;
 	memcpy(r.session_id, id, id_len);
@@ -391,22 +451,22 @@ int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 
 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 	{
-	return X509_PURPOSE_set(&s->purpose, purpose);
+	return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
 	}
 
 int SSL_set_purpose(SSL *s, int purpose)
 	{
-	return X509_PURPOSE_set(&s->purpose, purpose);
+	return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
 	}
 
 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 	{
-	return X509_TRUST_set(&s->trust, trust);
+	return X509_VERIFY_PARAM_set_trust(s->param, trust);
 	}
 
 int SSL_set_trust(SSL *s, int trust)
 	{
-	return X509_TRUST_set(&s->trust, trust);
+	return X509_VERIFY_PARAM_set_trust(s->param, trust);
 	}
 
 void SSL_free(SSL *s)
@@ -429,6 +489,9 @@ void SSL_free(SSL *s)
 		}
 #endif
 
+	if (s->param)
+		X509_VERIFY_PARAM_free(s->param);
+
 	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 
 	if (s->bbio != NULL)
@@ -465,12 +528,24 @@ void SSL_free(SSL *s)
 	/* Free up if allocated */
 
 	if (s->ctx) SSL_CTX_free(s->ctx);
+#ifndef OPENSSL_NO_TLSEXT
+	if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
+#ifndef OPENSSL_NO_EC
+	if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
+	if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
+#endif /* OPENSSL_NO_EC */
+#endif
 
 	if (s->client_CA != NULL)
 		sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
 
 	if (s->method != NULL) s->method->ssl_free(s);
 
+#ifndef	OPENSSL_NO_KRB5
+	if (s->kssl_ctx != NULL)
+		kssl_ctx_free(s->kssl_ctx);
+#endif	/* OPENSSL_NO_KRB5 */
+
 	OPENSSL_free(s);
 	}
 
@@ -494,18 +569,18 @@ void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
 	s->wbio=wbio;
 	}
 
-BIO *SSL_get_rbio(SSL *s)
+BIO *SSL_get_rbio(const SSL *s)
 	{ return(s->rbio); }
 
-BIO *SSL_get_wbio(SSL *s)
+BIO *SSL_get_wbio(const SSL *s)
 	{ return(s->wbio); }
 
-int SSL_get_fd(SSL *s)
+int SSL_get_fd(const SSL *s)
 	{
 	return(SSL_get_rfd(s));
 	}
 
-int SSL_get_rfd(SSL *s)
+int SSL_get_rfd(const SSL *s)
 	{
 	int ret= -1;
 	BIO *b,*r;
@@ -517,7 +592,7 @@ int SSL_get_rfd(SSL *s)
 	return(ret);
 	}
 
-int SSL_get_wfd(SSL *s)
+int SSL_get_wfd(const SSL *s)
 	{
 	int ret= -1;
 	BIO *b,*r;
@@ -599,7 +674,7 @@ err:
 
 
 /* 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 SSL_get_finished(const SSL *s, void *buf, size_t count)
 	{
 	size_t ret = 0;
 	
@@ -614,7 +689,7 @@ size_t SSL_get_finished(SSL *s, void *buf, size_t count)
 	}
 
 /* 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 SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
 	{
 	size_t ret = 0;
 	
@@ -629,32 +704,32 @@ size_t SSL_get_peer_finished(SSL *s, void *buf, size_t count)
 	}
 
 
-int SSL_get_verify_mode(SSL *s)
+int SSL_get_verify_mode(const SSL *s)
 	{
 	return(s->verify_mode);
 	}
 
-int SSL_get_verify_depth(SSL *s)
+int SSL_get_verify_depth(const SSL *s)
 	{
-	return(s->verify_depth);
+	return X509_VERIFY_PARAM_get_depth(s->param);
 	}
 
-int (*SSL_get_verify_callback(SSL *s))(int,X509_STORE_CTX *)
+int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
 	{
 	return(s->verify_callback);
 	}
 
-int SSL_CTX_get_verify_mode(SSL_CTX *ctx)
+int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
 	{
 	return(ctx->verify_mode);
 	}
 
-int SSL_CTX_get_verify_depth(SSL_CTX *ctx)
+int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
 	{
-	return(ctx->verify_depth);
+	return X509_VERIFY_PARAM_get_depth(ctx->param);
 	}
 
-int (*SSL_CTX_get_verify_callback(SSL_CTX *ctx))(int,X509_STORE_CTX *)
+int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
 	{
 	return(ctx->default_verify_callback);
 	}
@@ -669,7 +744,7 @@ void SSL_set_verify(SSL *s,int mode,
 
 void SSL_set_verify_depth(SSL *s,int depth)
 	{
-	s->verify_depth=depth;
+	X509_VERIFY_PARAM_set_depth(s->param, depth);
 	}
 
 void SSL_set_read_ahead(SSL *s,int yes)
@@ -677,12 +752,12 @@ void SSL_set_read_ahead(SSL *s,int yes)
 	s->read_ahead=yes;
 	}
 
-int SSL_get_read_ahead(SSL *s)
+int SSL_get_read_ahead(const SSL *s)
 	{
 	return(s->read_ahead);
 	}
 
-int SSL_pending(SSL *s)
+int SSL_pending(const SSL *s)
 	{
 	/* SSL_pending cannot work properly if read-ahead is enabled
 	 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
@@ -694,7 +769,7 @@ int SSL_pending(SSL *s)
 	return(s->method->ssl_pending(s));
 	}
 
-X509 *SSL_get_peer_certificate(SSL *s)
+X509 *SSL_get_peer_certificate(const SSL *s)
 	{
 	X509 *r;
 	
@@ -710,7 +785,7 @@ X509 *SSL_get_peer_certificate(SSL *s)
 	return(r);
 	}
 
-STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
+STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
 	{
 	STACK_OF(X509) *r;
 	
@@ -727,7 +802,7 @@ STACK_OF(X509) *SSL_get_peer_cert_chain(SSL *s)
 
 /* 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(SSL *t,SSL *f)
+void SSL_copy_session_id(SSL *t,const SSL *f)
 	{
 	CERT *tmp;
 
@@ -756,7 +831,7 @@ void SSL_copy_session_id(SSL *t,SSL *f)
 	}
 
 /* Fix this so it checks all the valid key/cert options */
-int SSL_CTX_check_private_key(SSL_CTX *ctx)
+int SSL_CTX_check_private_key(const SSL_CTX *ctx)
 	{
 	if (	(ctx == NULL) ||
 		(ctx->cert == NULL) ||
@@ -774,7 +849,7 @@ int SSL_CTX_check_private_key(SSL_CTX *ctx)
 	}
 
 /* Fix this function so that it takes an optional type parameter */
-int SSL_check_private_key(SSL *ssl)
+int SSL_check_private_key(const SSL *ssl)
 	{
 	if (ssl == NULL)
 		{
@@ -818,7 +893,7 @@ int SSL_connect(SSL *s)
 	return(s->method->ssl_connect(s));
 	}
 
-long SSL_get_default_timeout(SSL *s)
+long SSL_get_default_timeout(const SSL *s)
 	{
 	return(s->method->get_timeout());
 	}
@@ -843,7 +918,7 @@ int SSL_peek(SSL *s,void *buf,int num)
 	{
 	if (s->handshake_func == 0)
 		{
-		SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
+		SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
 		return -1;
 		}
 
@@ -934,12 +1009,24 @@ long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
 		l=s->max_cert_list;
 		s->max_cert_list=larg;
 		return(l);
+	case SSL_CTRL_SET_MTU:
+		if (SSL_version(s) == DTLS1_VERSION)
+			{
+			s->d1->mtu = larg;
+			return larg;
+			}
+		return 0;
+	case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
+		if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
+			return 0;
+		s->max_send_fragment = larg;
+		return 1;
 	default:
 		return(s->method->ssl_ctrl(s,cmd,larg,parg));
 		}
 	}
 
-long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)())
+long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
 	{
 	switch(cmd)
 		{
@@ -1022,12 +1109,17 @@ long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
 		return(ctx->options|=larg);
 	case SSL_CTRL_MODE:
 		return(ctx->mode|=larg);
+	case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
+		if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
+			return 0;
+		ctx->max_send_fragment = larg;
+		return 1;
 	default:
 		return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
 		}
 	}
 
-long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)())
+long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
 	{
 	switch(cmd)
 		{
@@ -1065,16 +1157,19 @@ int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
 
 /** return a STACK of the ciphers available for the SSL and in order of
  * preference */
-STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
+STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
 	{
-	if ((s != NULL) && (s->cipher_list != NULL))
-		{
-		return(s->cipher_list);
-		}
-	else if ((s->ctx != NULL) &&
-		(s->ctx->cipher_list != NULL))
+	if (s != NULL)
 		{
-		return(s->ctx->cipher_list);
+		if (s->cipher_list != NULL)
+			{
+			return(s->cipher_list);
+			}
+		else if ((s->ctx != NULL) &&
+			(s->ctx->cipher_list != NULL))
+			{
+			return(s->ctx->cipher_list);
+			}
 		}
 	return(NULL);
 	}
@@ -1083,20 +1178,23 @@ STACK_OF(SSL_CIPHER) *SSL_get_ciphers(SSL *s)
  * algorithm id */
 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
 	{
-	if ((s != NULL) && (s->cipher_list_by_id != NULL))
-		{
-		return(s->cipher_list_by_id);
-		}
-	else if ((s != NULL) && (s->ctx != NULL) &&
-		(s->ctx->cipher_list_by_id != NULL))
+	if (s != NULL)
 		{
-		return(s->ctx->cipher_list_by_id);
+		if (s->cipher_list_by_id != NULL)
+			{
+			return(s->cipher_list_by_id);
+			}
+		else if ((s->ctx != NULL) &&
+			(s->ctx->cipher_list_by_id != NULL))
+			{
+			return(s->ctx->cipher_list_by_id);
+			}
 		}
 	return(NULL);
 	}
 
 /** The old interface to get the same thing as SSL_get_ciphers() */
-const char *SSL_get_cipher_list(SSL *s,int n)
+const char *SSL_get_cipher_list(const SSL *s,int n)
 	{
 	SSL_CIPHER *c;
 	STACK_OF(SSL_CIPHER) *sk;
@@ -1117,8 +1215,21 @@ int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
 	
 	sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
 		&ctx->cipher_list_by_id,str);
-/* XXXX */
-	return((sk == NULL)?0:1);
+	/* ssl_create_cipher_list may return an empty stack if it
+	 * was unable to find a cipher matching the given rule string
+	 * (for example if the rule string specifies a cipher which
+	 * has been disabled). This is not an error as far as 
+	 * ssl_create_cipher_list is concerned, and hence 
+	 * ctx->cipher_list and ctx->cipher_list_by_id has been
+	 * updated. */
+	if (sk == NULL)
+		return 0;
+	else if (sk_SSL_CIPHER_num(sk) == 0)
+		{
+		SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
+		return 0;
+		}
+	return 1;
 	}
 
 /** specify the ciphers to be used by the SSL */
@@ -1128,12 +1239,19 @@ int SSL_set_cipher_list(SSL *s,const char *str)
 	
 	sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
 		&s->cipher_list_by_id,str);
-/* XXXX */
-	return((sk == NULL)?0:1);
+	/* see comment in SSL_CTX_set_cipher_list */
+	if (sk == NULL)
+		return 0;
+	else if (sk_SSL_CIPHER_num(sk) == 0)
+		{
+		SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
+		return 0;
+		}
+	return 1;
 	}
 
 /* works well for SSLv2, not so good for SSLv3 */
-char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
+char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
 	{
 	char *p;
 	const char *cp;
@@ -1168,7 +1286,8 @@ char *SSL_get_shared_ciphers(SSL *s,char *buf,int len)
 	return(buf);
 	}
 
-int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
+int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
+                             int (*put_cb)(const SSL_CIPHER *, unsigned char *))
 	{
 	int i,j=0;
 	SSL_CIPHER *c;
@@ -1187,7 +1306,12 @@ int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
                 if ((c->algorithms & SSL_KRB5) && nokrb5)
                     continue;
 #endif /* OPENSSL_NO_KRB5 */                    
-		j=ssl_put_cipher_by_char(s,c,p);
+#ifndef OPENSSL_NO_PSK
+		/* with PSK there must be client callback set */
+		if ((c->algorithms & SSL_PSK) && s->psk_client_callback == NULL)
+			continue;
+#endif /* OPENSSL_NO_PSK */
+		j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
 		p+=j;
 		}
 	return(p-q);
@@ -1237,7 +1361,31 @@ err:
 	return(NULL);
 	}
 
-unsigned long SSL_SESSION_hash(SSL_SESSION *a)
+
+#ifndef OPENSSL_TLSEXT
+/** return a servername extension value if provided in Client Hello, or NULL. 
+ * So far, only host_name types are defined (RFC 3546).
+ */
+
+const char *SSL_get_servername(const SSL *s, const int type)
+	{
+	if (type != TLSEXT_NAMETYPE_host_name)
+		return NULL;
+
+	return s->session && !s->tlsext_hostname ?
+		s->session->tlsext_hostname :
+		s->tlsext_hostname;
+	}
+
+int SSL_get_servername_type(const SSL *s)
+	{
+	if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname)) 
+		return TLSEXT_NAMETYPE_host_name;
+	return -1;
+	}
+#endif
+
+unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
 	{
 	unsigned long l;
 
@@ -1254,7 +1402,7 @@ unsigned long SSL_SESSION_hash(SSL_SESSION *a)
  * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
  * able to construct an SSL_SESSION that will collide with any existing session
  * with a matching session ID. */
-int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
+int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
 	{
 	if (a->ssl_version != b->ssl_version)
 		return(1);
@@ -1270,7 +1418,7 @@ int SSL_SESSION_cmp(SSL_SESSION *a,SSL_SESSION *b)
 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
 
-SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
+SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
 	{
 	SSL_CTX *ret=NULL;
 	
@@ -1328,7 +1476,9 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
 	ret->msg_callback=0;
 	ret->msg_callback_arg=NULL;
 	ret->verify_mode=SSL_VERIFY_NONE;
+#if 0
 	ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
+#endif
 	ret->sid_ctx_length=0;
 	ret->default_verify_callback=NULL;
 	if ((ret->cert=ssl_cert_new()) == NULL)
@@ -1337,6 +1487,8 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
 	ret->default_passwd_callback=0;
 	ret->default_passwd_callback_userdata=NULL;
 	ret->client_cert_cb=0;
+	ret->app_gen_cookie_cb=0;
+	ret->app_verify_cookie_cb=0;
 
 	ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
 			LHASH_COMP_FN(SSL_SESSION_cmp));
@@ -1354,6 +1506,10 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
 		goto err2;
 		}
 
+	ret->param = X509_VERIFY_PARAM_new();
+	if (!ret->param)
+		goto err;
+
 	if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
 		{
 		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
@@ -1378,6 +1534,17 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
 	ret->extra_certs=NULL;
 	ret->comp_methods=SSL_COMP_get_compression_methods();
 
+	ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
+
+#ifndef OPENSSL_NO_TLSEXT
+	ret->tlsext_servername_callback = 0;
+	ret->tlsext_servername_arg = NULL;
+#endif
+#ifndef OPENSSL_NO_PSK
+	ret->psk_identity_hint=NULL;
+	ret->psk_client_callback=NULL;
+	ret->psk_server_callback=NULL;
+#endif
 	return(ret);
 err:
 	SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
@@ -1409,13 +1576,27 @@ void SSL_CTX_free(SSL_CTX *a)
 		abort(); /* ok */
 		}
 #endif
-	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
 
+	if (a->param)
+		X509_VERIFY_PARAM_free(a->param);
+
+	/*
+	 * Free internal session cache. However: the remove_cb() may reference
+	 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
+	 * after the sessions were flushed.
+	 * As the ex_data handling routines might also touch the session cache,
+	 * the most secure solution seems to be: empty (flush) the cache, then
+	 * free ex_data, then finally free the cache.
+	 * (See ticket [openssl.org #212].)
+	 */
 	if (a->sessions != NULL)
-		{
 		SSL_CTX_flush_sessions(a,0);
+
+	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
+
+	if (a->sessions != NULL)
 		lh_free(a->sessions);
-		}
+
 	if (a->cert_store != NULL)
 		X509_STORE_free(a->cert_store);
 	if (a->cipher_list != NULL)
@@ -1434,6 +1615,11 @@ void SSL_CTX_free(SSL_CTX *a)
 #else
 	a->comp_methods = NULL;
 #endif
+
+#ifndef OPENSSL_NO_PSK
+	if (a->psk_identity_hint)
+		OPENSSL_free(a->psk_identity_hint);
+#endif
 	OPENSSL_free(a);
 	}
 
@@ -1461,7 +1647,7 @@ void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
 
 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
 	{
-	ctx->verify_depth=depth;
+	X509_VERIFY_PARAM_set_depth(ctx->param, depth);
 	}
 
 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
@@ -1471,7 +1657,10 @@ void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 	int rsa_enc_export,dh_rsa_export,dh_dsa_export;
 	int rsa_tmp_export,dh_tmp_export,kl;
 	unsigned long mask,emask;
-	int have_ecc_cert, have_ecdh_tmp, ecdh_ok, ecdsa_ok, ecc_pkey_size;
+	int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
+#ifndef OPENSSL_NO_ECDH
+	int have_ecdh_tmp;
+#endif
 	X509 *x = NULL;
 	EVP_PKEY *ecc_pkey = NULL;
 	int signature_nid = 0;
@@ -1553,7 +1742,7 @@ void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 	if (rsa_enc || rsa_sign)
 		{
 		mask|=SSL_aRSA;
-		mask|=SSL_aRSA;
+		emask|=SSL_aRSA;
 		}
 
 	if (dsa_sign)
@@ -1623,6 +1812,12 @@ void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 		emask|=SSL_kECDHE;
 		}
 #endif
+
+#ifndef OPENSSL_NO_PSK
+	mask  |= SSL_kPSK | SSL_aPSK;
+	emask |= SSL_kPSK | SSL_aPSK;
+#endif
+
 	c->mask=mask;
 	c->export_mask=emask;
 	c->valid=1;
@@ -1790,14 +1985,14 @@ void ssl_update_cache(SSL *s,int mode)
 	 * and it would be rather hard to do anyway :-) */
 	if (s->session->session_id_length == 0) return;
 
-	i=s->ctx->session_cache_mode;
+	i=s->session_ctx->session_cache_mode;
 	if ((i & mode) && (!s->hit)
-		&& ((i & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)
-		    || SSL_CTX_add_session(s->ctx,s->session))
-		&& (s->ctx->new_session_cb != NULL))
+		&& ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
+		    || SSL_CTX_add_session(s->session_ctx,s->session))
+		&& (s->session_ctx->new_session_cb != NULL))
 		{
 		CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
-		if (!s->ctx->new_session_cb(s,s->session))
+		if (!s->session_ctx->new_session_cb(s,s->session))
 			SSL_SESSION_free(s->session);
 		}
 
@@ -1806,20 +2001,20 @@ void ssl_update_cache(SSL *s,int mode)
 		((i & mode) == mode))
 		{
 		if (  (((mode & SSL_SESS_CACHE_CLIENT)
-			?s->ctx->stats.sess_connect_good
-			:s->ctx->stats.sess_accept_good) & 0xff) == 0xff)
+			?s->session_ctx->stats.sess_connect_good
+			:s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
 			{
-			SSL_CTX_flush_sessions(s->ctx,time(NULL));
+			SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
 			}
 		}
 	}
 
-SSL_METHOD *SSL_get_ssl_method(SSL *s)
+const SSL_METHOD *SSL_get_ssl_method(SSL *s)
 	{
 	return(s->method);
 	}
 
-int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
+int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
 	{
 	int conn= -1;
 	int ret=1;
@@ -1846,7 +2041,7 @@ int SSL_set_ssl_method(SSL *s,SSL_METHOD *meth)
 	return(ret);
 	}
 
-int SSL_get_error(SSL *s,int i)
+int SSL_get_error(const SSL *s,int i)
 	{
 	int reason;
 	unsigned long l;
@@ -1980,13 +2175,25 @@ int ssl_undefined_function(SSL *s)
 	return(0);
 	}
 
+int ssl_undefined_void_function(void)
+	{
+	SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+	return(0);
+	}
+
+int ssl_undefined_const_function(const SSL *s)
+	{
+	SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+	return(0);
+	}
+
 SSL_METHOD *ssl_bad_method(int ver)
 	{
 	SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
 	return(NULL);
 	}
 
-const char *SSL_get_version(SSL *s)
+const char *SSL_get_version(const SSL *s)
 	{
 	if (s->version == TLS1_VERSION)
 		return("TLSv1");
@@ -2024,6 +2231,7 @@ SSL *SSL_dup(SSL *s)
 		 * they should not both point to the same object,
 		 * and thus we can't use SSL_copy_session_id. */
 
+		ret->method->ssl_free(ret);
 		ret->method = s->method;
 		ret->method->ssl_new(ret);
 
@@ -2088,8 +2296,8 @@ SSL *SSL_dup(SSL *s)
 	ret->rstate=s->rstate;
 	ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
 	ret->hit=s->hit;
-	ret->purpose=s->purpose;
-	ret->trust=s->trust;
+
+	X509_VERIFY_PARAM_inherit(ret->param, s->param);
 
 	/* dup the cipher_list and cipher_list_by_id stacks */
 	if (s->cipher_list != NULL)
@@ -2141,6 +2349,7 @@ void ssl_clear_cipher_ctx(SSL *s)
 		OPENSSL_free(s->enc_write_ctx);
 		s->enc_write_ctx=NULL;
 		}
+#ifndef OPENSSL_NO_COMP
 	if (s->expand != NULL)
 		{
 		COMP_CTX_free(s->expand);
@@ -2151,10 +2360,11 @@ void ssl_clear_cipher_ctx(SSL *s)
 		COMP_CTX_free(s->compress);
 		s->compress=NULL;
 		}
+#endif
 	}
 
 /* Fix this function so that it takes an optional type parameter */
-X509 *SSL_get_certificate(SSL *s)
+X509 *SSL_get_certificate(const SSL *s)
 	{
 	if (s->cert != NULL)
 		return(s->cert->key->x509);
@@ -2171,12 +2381,37 @@ EVP_PKEY *SSL_get_privatekey(SSL *s)
 		return(NULL);
 	}
 
-SSL_CIPHER *SSL_get_current_cipher(SSL *s)
+SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
 	{
 	if ((s->session != NULL) && (s->session->cipher != NULL))
 		return(s->session->cipher);
 	return(NULL);
 	}
+#ifdef OPENSSL_NO_COMP
+const void *SSL_get_current_compression(SSL *s)
+	{
+	return NULL;
+	}
+const void *SSL_get_current_expansion(SSL *s)
+	{
+	return NULL;
+	}
+#else
+
+const COMP_METHOD *SSL_get_current_compression(SSL *s)
+	{
+	if (s->compress != NULL)
+		return(s->compress->meth);
+	return(NULL);
+	}
+
+const COMP_METHOD *SSL_get_current_expansion(SSL *s)
+	{
+	if (s->expand != NULL)
+		return(s->expand->meth);
+	return(NULL);
+	}
+#endif
 
 int ssl_init_wbio_buffer(SSL *s,int push)
 	{
@@ -2235,7 +2470,7 @@ void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
 	ctx->quiet_shutdown=mode;
 	}
 
-int SSL_CTX_get_quiet_shutdown(SSL_CTX *ctx)
+int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
 	{
 	return(ctx->quiet_shutdown);
 	}
@@ -2245,7 +2480,7 @@ void SSL_set_quiet_shutdown(SSL *s,int mode)
 	s->quiet_shutdown=mode;
 	}
 
-int SSL_get_quiet_shutdown(SSL *s)
+int SSL_get_quiet_shutdown(const SSL *s)
 	{
 	return(s->quiet_shutdown);
 	}
@@ -2255,18 +2490,34 @@ void SSL_set_shutdown(SSL *s,int mode)
 	s->shutdown=mode;
 	}
 
-int SSL_get_shutdown(SSL *s)
+int SSL_get_shutdown(const SSL *s)
 	{
 	return(s->shutdown);
 	}
 
-int SSL_version(SSL *s)
+int SSL_version(const SSL *s)
 	{
 	return(s->version);
 	}
 
-SSL_CTX *SSL_get_SSL_CTX(SSL *ssl)
+SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
+	{
+	return(ssl->ctx);
+	}
+
+SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
 	{
+	if (ssl->ctx == ctx) 
+		return ssl->ctx;
+	if (ctx == NULL)
+		ctx = ssl->initial_ctx;
+	if (ssl->cert != NULL)
+		ssl_cert_free(ssl->cert);
+	ssl->cert = ssl_cert_dup(ctx->cert);
+	CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
+	if (ssl->ctx != NULL)
+		SSL_CTX_free(ssl->ctx); /* decrement reference count */
+	ssl->ctx = ctx;
 	return(ssl->ctx);
 	}
 
@@ -2289,12 +2540,14 @@ void SSL_set_info_callback(SSL *ssl,
 	ssl->info_callback=cb;
 	}
 
-void (*SSL_get_info_callback(SSL *ssl))(const SSL *ssl,int type,int val)
+/* One compiler (Diab DCC) doesn't like argument names in returned
+   function pointer.  */
+void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
 	{
 	return ssl->info_callback;
 	}
 
-int SSL_state(SSL *ssl)
+int SSL_state(const SSL *ssl)
 	{
 	return(ssl->state);
 	}
@@ -2304,7 +2557,7 @@ void SSL_set_verify_result(SSL *ssl,long arg)
 	ssl->verify_result=arg;
 	}
 
-long SSL_get_verify_result(SSL *ssl)
+long SSL_get_verify_result(const SSL *ssl)
 	{
 	return(ssl->verify_result);
 	}
@@ -2321,7 +2574,7 @@ int SSL_set_ex_data(SSL *s,int idx,void *arg)
 	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
 	}
 
-void *SSL_get_ex_data(SSL *s,int idx)
+void *SSL_get_ex_data(const SSL *s,int idx)
 	{
 	return(CRYPTO_get_ex_data(&s->ex_data,idx));
 	}
@@ -2338,7 +2591,7 @@ int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
 	return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
 	}
 
-void *SSL_CTX_get_ex_data(SSL_CTX *s,int idx)
+void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
 	{
 	return(CRYPTO_get_ex_data(&s->ex_data,idx));
 	}
@@ -2348,7 +2601,7 @@ int ssl_ok(SSL *s)
 	return(1);
 	}
 
-X509_STORE *SSL_CTX_get_cert_store(SSL_CTX *ctx)
+X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
 	{
 	return(ctx->cert_store);
 	}
@@ -2360,7 +2613,7 @@ void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
 	ctx->cert_store=store;
 	}
 
-int SSL_want(SSL *s)
+int SSL_want(const SSL *s)
 	{
 	return(s->rwstate);
 	}
@@ -2376,14 +2629,14 @@ 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);
+    SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(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);
+    SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
     }
 #endif
 
@@ -2412,13 +2665,13 @@ RSA *cb(SSL *ssl,int is_export,int keylength)
 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);
+	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(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);
+	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
 	}
 #endif
 
@@ -2426,24 +2679,85 @@ void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
 							int keylength))
 	{
-	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)())ecdh);
+	SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
 	}
 
 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
 						int keylength))
 	{
-	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)())ecdh);
+	SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
 	}
 #endif
 
+#ifndef OPENSSL_NO_PSK
+int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
+	{
+	if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
+		{
+		SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
+		return 0;
+		}
+	if (ctx->psk_identity_hint != NULL)
+		OPENSSL_free(ctx->psk_identity_hint);
+	if (identity_hint != NULL)
+		{
+		ctx->psk_identity_hint = BUF_strdup(identity_hint);
+		if (ctx->psk_identity_hint == NULL)
+			return 0;
+		}
+	else
+		ctx->psk_identity_hint = NULL;
+	return 1;
+	}
+
+int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
+	{
+	if (s == NULL)
+		return 0;
+
+	if (s->session == NULL)
+		return 1; /* session not created yet, ignored */
+
+	if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
+		{
+		SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
+		return 0;
+		}
+	if (s->session->psk_identity_hint != NULL)
+		OPENSSL_free(s->session->psk_identity_hint);
+	if (identity_hint != NULL)
+		{
+		s->session->psk_identity_hint = BUF_strdup(identity_hint);
+		if (s->session->psk_identity_hint == NULL)
+			return 0;
+		}
+	else
+		s->session->psk_identity_hint = NULL;
+	return 1;
+	}
+
+const char *SSL_get_psk_identity_hint(const SSL *s)
+	{
+	if (s == NULL || s->session == NULL)
+		return NULL;
+	return(s->session->psk_identity_hint);
+	}
+
+const char *SSL_get_psk_identity(const SSL *s)
+	{
+	if (s == NULL || s->session == NULL)
+		return NULL;
+	return(s->session->psk_identity);
+	}
+#endif
 
 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
 	{
-	SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
+	SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
 	}
 void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
 	{
-	SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)())cb);
+	SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
 	}