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, 66 insertions, 0 deletions

diff --git a/ssl/ssl.h b/ssl/ssl.h
index ff18cf5fd3..07d109a235 100644
--- a/ssl/ssl.h
+++ b/ssl/ssl.h
@@ -474,6 +474,13 @@ typedef struct ssl_session_st
 	/* These are used to make removal of session-ids more
 	 * efficient and to implement a maximum cache size. */
 	struct ssl_session_st *prev,*next;
+#ifndef OPENSSL_NO_TLSEXT
+	char *tlsext_hostname;
+	/* RFC4507 info */
+	unsigned char *tlsext_tick;	/* Session ticket */
+	size_t	tlsext_ticklen;		/* Session ticket length */	
+	long tlsext_tick_lifetime_hint;	/* Session lifetime hint in seconds */
+#endif
 	} SSL_SESSION;
 
 
@@ -502,6 +509,8 @@ typedef struct ssl_session_st
 #define SSL_OP_NO_QUERY_MTU                 0x00001000L
 /* Turn on Cookie Exchange (on relevant for servers) */
 #define SSL_OP_COOKIE_EXCHANGE              0x00002000L
+/* Don't use RFC4507 ticket extension */
+#define SSL_OP_NO_TICKET	            0x00004000L
 
 /* As server, disallow session resumption on renegotiation */
 #define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION	0x00010000L
@@ -749,6 +758,17 @@ struct ssl_ctx_st
 #endif
 
 	int quiet_shutdown;
+
+#ifndef OPENSSL_NO_TLSEXT
+	/* TLS extensions servername callback */
+	int (*tlsext_servername_callback)(SSL*, int *, void *);
+	void *tlsext_servername_arg;
+	/* RFC 4507 session ticket keys */
+	unsigned char tlsext_tick_key_name[16];
+	unsigned char tlsext_tick_hmac_key[16];
+	unsigned char tlsext_tick_aes_key[16];
+#endif
+
 	};
 
 #define SSL_SESS_CACHE_OFF			0x0000
@@ -970,6 +990,26 @@ struct ssl_st
 	int first_packet;
 	int client_version;	/* what was passed, used for
 				 * SSLv3/TLS rollback check */
+	unsigned int max_send_fragment;
+#ifndef OPENSSL_NO_TLSEXT
+	/* TLS extension debug callback */
+	void (*tlsext_debug_cb)(SSL *s, int client_server, int type,
+					unsigned char *data, int len,
+					void *arg);
+	void *tlsext_debug_arg;
+	char *tlsext_hostname;
+	int servername_done;   /* no further mod of servername 
+	                          0 : call the servername extension callback.
+	                          1 : prepare 2, allow last ack just after in server callback.
+	                          2 : don't call servername callback, no ack in server hello
+	                       */
+	/* RFC4507 session ticket expected to be received or sent */
+	int tlsext_ticket_expected;
+	SSL_CTX * initial_ctx; /* initial ctx, used to store sessions */
+#define session_ctx initial_ctx
+#else
+#define session_ctx ctx
+#endif
 	};
 
 #ifdef __cplusplus
@@ -1115,6 +1155,9 @@ size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
 #define SSL_AD_INTERNAL_ERROR		TLS1_AD_INTERNAL_ERROR	/* fatal */
 #define SSL_AD_USER_CANCELLED		TLS1_AD_USER_CANCELLED
 #define SSL_AD_NO_RENEGOTIATION		TLS1_AD_NO_RENEGOTIATION
+#define SSL_AD_UNSUPPORTED_EXTENSION	TLS1_AD_UNSUPPORTED_EXTENSION
+#define SSL_AD_CERTIFICATE_UNOBTAINABLE TLS1_AD_CERTIFICATE_UNOBTAINABLE
+#define SSL_AD_UNRECOGNIZED_NAME	TLS1_AD_UNRECOGNIZED_NAME
 
 #define SSL_ERROR_NONE			0
 #define SSL_ERROR_SSL			1
@@ -1173,6 +1216,15 @@ size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count);
 #define SSL_CTRL_GET_MAX_CERT_LIST		50
 #define SSL_CTRL_SET_MAX_CERT_LIST		51
 
+/* see tls1.h for macros based on these */
+#ifndef OPENSSL_NO_TLSEXT
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_CB	53
+#define SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG	54
+#define SSL_CTRL_SET_TLSEXT_HOSTNAME		55
+#define SSL_CTRL_SET_TLSEXT_DEBUG_CB		56
+#define SSL_CTRL_SET_TLSEXT_DEBUG_ARG		57
+#endif
+
 #define SSL_session_reused(ssl) \
 	SSL_ctrl((ssl),SSL_CTRL_GET_SESSION_REUSED,0,NULL)
 #define SSL_num_renegotiations(ssl) \
@@ -1445,6 +1497,7 @@ int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
 SSL_SESSION *SSL_get_session(const SSL *ssl);
 SSL_SESSION *SSL_get1_session(SSL *ssl); /* obtain a reference count */
 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
+SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx);
 void SSL_set_info_callback(SSL *ssl,
 			   void (*cb)(const SSL *ssl,int type,int val));
 void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl,int type,int val);
@@ -1621,10 +1674,12 @@ void ERR_load_SSL_strings(void);
 #define SSL_F_SSL3_GET_FINISHED				 140
 #define SSL_F_SSL3_GET_KEY_EXCHANGE			 141
 #define SSL_F_SSL3_GET_MESSAGE				 142
+#define SSL_F_SSL3_GET_NEW_SESSION_TICKET		 283
 #define SSL_F_SSL3_GET_RECORD				 143
 #define SSL_F_SSL3_GET_SERVER_CERTIFICATE		 144
 #define SSL_F_SSL3_GET_SERVER_DONE			 145
 #define SSL_F_SSL3_GET_SERVER_HELLO			 146
+#define SSL_F_SSL3_NEW_SESSION_TICKET			 284
 #define SSL_F_SSL3_OUTPUT_CERT_CHAIN			 147
 #define SSL_F_SSL3_PEEK					 235
 #define SSL_F_SSL3_READ_BYTES				 148
@@ -1640,8 +1695,10 @@ void ERR_load_SSL_strings(void);
 #define SSL_F_SSL3_SETUP_KEY_BLOCK			 157
 #define SSL_F_SSL3_WRITE_BYTES				 158
 #define SSL_F_SSL3_WRITE_PENDING			 159
+#define SSL_F_SSL_ADD_CLIENTHELLO_TLSEXT		 272
 #define SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK	 215
 #define SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK	 216
+#define SSL_F_SSL_ADD_SERVERHELLO_TLSEXT		 273
 #define SSL_F_SSL_BAD_METHOD				 160
 #define SSL_F_SSL_BYTES_TO_CIPHER_LIST			 161
 #define SSL_F_SSL_CERT_DUP				 221
@@ -1649,6 +1706,7 @@ void ERR_load_SSL_strings(void);
 #define SSL_F_SSL_CERT_INSTANTIATE			 214
 #define SSL_F_SSL_CERT_NEW				 162
 #define SSL_F_SSL_CHECK_PRIVATE_KEY			 163
+#define SSL_F_SSL_CHECK_SERVERHELLO_TLSEXT		 274
 #define SSL_F_SSL_CIPHER_PROCESS_RULESTR		 230
 #define SSL_F_SSL_CIPHER_STRENGTH_SORT			 231
 #define SSL_F_SSL_CLEAR					 164
@@ -1681,6 +1739,8 @@ void ERR_load_SSL_strings(void);
 #define SSL_F_SSL_LOAD_CLIENT_CA_FILE			 185
 #define SSL_F_SSL_NEW					 186
 #define SSL_F_SSL_PEEK					 270
+#define SSL_F_SSL_PREPARE_CLIENTHELLO_TLSEXT		 275
+#define SSL_F_SSL_PREPARE_SERVERHELLO_TLSEXT		 276
 #define SSL_F_SSL_READ					 223
 #define SSL_F_SSL_RSA_PRIVATE_DECRYPT			 187
 #define SSL_F_SSL_RSA_PUBLIC_ENCRYPT			 188
@@ -1763,6 +1823,7 @@ void ERR_load_SSL_strings(void);
 #define SSL_R_CIPHER_CODE_WRONG_LENGTH			 137
 #define SSL_R_CIPHER_OR_HASH_UNAVAILABLE		 138
 #define SSL_R_CIPHER_TABLE_SRC_ERROR			 139
+#define SSL_R_CLIENTHELLO_TLSEXT			 157
 #define SSL_R_COMPRESSED_LENGTH_TOO_LONG		 140
 #define SSL_R_COMPRESSION_FAILURE			 141
 #define SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE	 307
@@ -1847,6 +1908,7 @@ void ERR_load_SSL_strings(void);
 #define SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED		 197
 #define SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE		 297
 #define SSL_R_PACKET_LENGTH_TOO_LONG			 198
+#define SSL_R_PARSE_TLSEXT				 223
 #define SSL_R_PATH_TOO_LONG				 270
 #define SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE		 199
 #define SSL_R_PEER_ERROR				 200
@@ -1870,11 +1932,14 @@ void ERR_load_SSL_strings(void);
 #define SSL_R_REUSE_CERT_LENGTH_NOT_ZERO		 216
 #define SSL_R_REUSE_CERT_TYPE_NOT_ZERO			 217
 #define SSL_R_REUSE_CIPHER_LIST_NOT_ZERO		 218
+#define SSL_R_SERVERHELLO_TLSEXT			 224
 #define SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED		 277
 #define SSL_R_SHORT_READ				 219
 #define SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE	 220
 #define SSL_R_SSL23_DOING_SESSION_ID_REUSE		 221
 #define SSL_R_SSL2_CONNECTION_ID_TOO_LONG		 299
+#define SSL_R_SSL3_EXT_INVALID_SERVERNAME		 225
+#define SSL_R_SSL3_EXT_INVALID_SERVERNAME_TYPE		 226
 #define SSL_R_SSL3_SESSION_ID_TOO_LONG			 300
 #define SSL_R_SSL3_SESSION_ID_TOO_SHORT			 222
 #define SSL_R_SSLV3_ALERT_BAD_CERTIFICATE		 1042
@@ -1909,6 +1974,7 @@ void ERR_load_SSL_strings(void);
 #define SSL_R_TLSV1_ALERT_UNKNOWN_CA			 1048
 #define SSL_R_TLSV1_ALERT_USER_CANCELLED		 1090
 #define SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER	 232
+#define SSL_R_TLS_INVALID_ECPOINTFORMAT_LIST		 227
 #define SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST 233
 #define SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG	 234
 #define SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER		 235