Backport of TLS extension code to OpenSSL 0.9.8.

Include server name and RFC4507bis support.

This is not compiled in by default and must be explicitly enabled with
the Configure option enable-tlsext

1 files changed, 100 insertions, 1 deletions

diff --git a/ssl/ssl_asn1.c b/ssl/ssl_asn1.c
index d129acc329..8d9fb6d7d3 100644
--- a/ssl/ssl_asn1.c
+++ b/ssl/ssl_asn1.c
@@ -78,6 +78,11 @@ typedef struct ssl_session_asn1_st
 	ASN1_INTEGER time;
 	ASN1_INTEGER timeout;
 	ASN1_INTEGER verify_result;
+#ifndef OPENSSL_NO_TLSEXT
+	ASN1_OCTET_STRING tlsext_hostname;
+	ASN1_INTEGER tlsext_tick_lifetime;
+	ASN1_OCTET_STRING tlsext_tick;
+#endif /* OPENSSL_NO_TLSEXT */
 	} SSL_SESSION_ASN1;
 
 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
@@ -86,6 +91,10 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 	int v1=0,v2=0,v3=0,v4=0,v5=0;
 	unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
 	unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
+#ifndef OPENSSL_NO_TLSEXT
+	int v6=0,v9=0,v10=0;
+	unsigned char ibuf6[LSIZE2];
+#endif
 	long l;
 	SSL_SESSION_ASN1 a;
 	M_ASN1_I2D_vars(in);
@@ -178,7 +187,32 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 		ASN1_INTEGER_set(&a.verify_result,in->verify_result);
 		}
 
-
+#ifndef OPENSSL_NO_TLSEXT
+	if (in->tlsext_hostname)
+                {
+                a.tlsext_hostname.length=strlen(in->tlsext_hostname);
+                a.tlsext_hostname.type=V_ASN1_OCTET_STRING;
+                a.tlsext_hostname.data=(unsigned char *)in->tlsext_hostname;
+                }
+	if (in->tlsext_tick)
+                {
+                a.tlsext_tick.length= in->tlsext_ticklen;
+                a.tlsext_tick.type=V_ASN1_OCTET_STRING;
+                a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
+		/* If we have a ticket set session ID to empty because
+		 * it will be bogus. 
+		 */
+		if (in->tlsext_ticklen)
+			a.session_id.length=0;
+                }
+	if (in->tlsext_tick_lifetime_hint != 0)
+		{
+		a.tlsext_tick_lifetime.length=LSIZE2;
+		a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
+		a.tlsext_tick_lifetime.data=ibuf6;
+		ASN1_INTEGER_set(&a.tlsext_tick_lifetime,in->tlsext_tick_lifetime_hint);
+		}
+#endif /* OPENSSL_NO_TLSEXT */
 	M_ASN1_I2D_len(&(a.version),		i2d_ASN1_INTEGER);
 	M_ASN1_I2D_len(&(a.ssl_version),	i2d_ASN1_INTEGER);
 	M_ASN1_I2D_len(&(a.cipher),		i2d_ASN1_OCTET_STRING);
@@ -200,6 +234,14 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 	if (in->verify_result != X509_V_OK)
 		M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 
+#ifndef OPENSSL_NO_TLSEXT
+	if (in->tlsext_tick_lifetime_hint)
+      	 	M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
+	if (in->tlsext_tick)
+        	M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
+	if (in->tlsext_hostname)
+        	M_ASN1_I2D_len_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
+#endif /* OPENSSL_NO_TLSEXT */
 	M_ASN1_I2D_seq_total();
 
 	M_ASN1_I2D_put(&(a.version),		i2d_ASN1_INTEGER);
@@ -223,6 +265,14 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
 			       v4);
 	if (in->verify_result != X509_V_OK)
 		M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
+#ifndef OPENSSL_NO_TLSEXT
+	if (in->tlsext_hostname)
+        	M_ASN1_I2D_put_EXP_opt(&(a.tlsext_hostname), i2d_ASN1_OCTET_STRING,6,v6);
+	if (in->tlsext_tick_lifetime_hint)
+      	 	M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
+	if (in->tlsext_tick)
+        	M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
+#endif /* OPENSSL_NO_TLSEXT */
 	M_ASN1_I2D_finish();
 	}
 
@@ -394,5 +444,54 @@ SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
 	else
 		ret->verify_result=X509_V_OK;
 
+#ifndef OPENSSL_NO_TLSEXT
+	os.length=0;
+	os.data=NULL;
+	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,6);
+	if (os.data)
+		{
+		ret->tlsext_hostname = BUF_strndup((char *)os.data, os.length);
+		OPENSSL_free(os.data);
+		os.data = NULL;
+		os.length = 0;
+		}
+	else
+		ret->tlsext_hostname=NULL;
+	ai.length=0;
+	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,9);
+	if (ai.data != NULL)
+		{
+		ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
+		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
+		}
+	else
+		ret->tlsext_tick_lifetime_hint=0;
+ 	os.length=0;
+ 	os.data=NULL;
+  	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,10);
+ 	if (os.data)
+ 		{
+		ret->tlsext_tick = os.data;
+		ret->tlsext_ticklen = os.length;
+ 		os.data = NULL;
+ 		os.length = 0;
+#if 0
+		/* There are two ways to detect a resumed ticket sesion.
+		 * One is to set a random session ID and then the server
+		 * must return a match in ServerHello. This allows the normal
+		 * client session ID matching to work.
+		 */ 
+		if (ret->session_id_length == 0)
+			{
+			ret->session_id_length=SSL3_MAX_SSL_SESSION_ID_LENGTH;
+			RAND_pseudo_bytes(ret->session_id,
+						ret->session_id_length);
+			}
+#endif
+ 		}
+	else
+		ret->tlsext_tick=NULL;
+#endif /* OPENSSL_NO_TLSEXT */
+
 	M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
 	}