/* The spec allows for a longer length than this, but we limit it */
#define HELLO_VERIFY_REQUEST_MAX_LENGTH 258
#define SERVER_HELLO_MAX_LENGTH 20000
+#define ENCRYPTED_EXTENSIONS_MAX_LENGTH 20000
#define SERVER_KEY_EXCH_MAX_LENGTH 102400
#define SERVER_HELLO_DONE_MAX_LENGTH 0
#define CCS_MAX_LENGTH 1
/* Max should actually be 36 but we are generous */
#define FINISHED_MAX_LENGTH 64
+/* Extension context codes */
+#define EXT_DTLS_ONLY 0x01
+#define EXT_CLIENT_HELLO 0x02
+/* Really means TLS1.2 or below */
+#define EXT_TLS1_2_SERVER_HELLO 0x04
+#define EXT_TLS1_3_SERVER_HELLO 0x08
+#define EXT_TLS1_3_ENCRYPTED_EXTENSIONS 0x10
+#define EXT_TLS1_3_HELLO_RETRY_REQUEST 0x20
+#define EXT_TLS1_3_CERTIFICATE 0x40
+#define EXT_TLS1_3_NEW_SESSION_TICKET 0x80
+
/* Message processing return codes */
typedef enum {
/* Something bad happened */
/* Flush the write BIO */
int statem_flush(SSL *s);
+typedef int (*confunc_f) (SSL *s, WPACKET *pkt);
+
/*
* TLS/DTLS client state machine functions
*/
WRITE_TRAN ossl_statem_client_write_transition(SSL *s);
WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst);
WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst);
-int ossl_statem_client_construct_message(SSL *s);
-unsigned long ossl_statem_client_max_message_size(SSL *s);
+int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt,
+ confunc_f *confunc, int *mt);
+size_t ossl_statem_client_max_message_size(SSL *s);
MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt);
WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst);
WRITE_TRAN ossl_statem_server_write_transition(SSL *s);
WORK_STATE ossl_statem_server_pre_work(SSL *s, WORK_STATE wst);
WORK_STATE ossl_statem_server_post_work(SSL *s, WORK_STATE wst);
-int ossl_statem_server_construct_message(SSL *s);
-unsigned long ossl_statem_server_max_message_size(SSL *s);
+int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt,
+ confunc_f *confunc,int *mt);
+size_t ossl_statem_server_max_message_size(SSL *s);
MSG_PROCESS_RETURN ossl_statem_server_process_message(SSL *s, PACKET *pkt);
WORK_STATE ossl_statem_server_post_process_message(SSL *s, WORK_STATE wst);
/* Functions for getting new message data */
__owur int tls_get_message_header(SSL *s, int *mt);
-__owur int tls_get_message_body(SSL *s, unsigned long *len);
-__owur int dtls_get_message(SSL *s, int *mt, unsigned long *len);
+__owur int tls_get_message_body(SSL *s, size_t *len);
+__owur int dtls_get_message(SSL *s, int *mt, size_t *len);
/* Message construction and processing functions */
+__owur int tls_process_initial_server_flight(SSL *s, int *al);
__owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt);
-__owur int tls_construct_change_cipher_spec(SSL *s);
-__owur int dtls_construct_change_cipher_spec(SSL *s);
+__owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
+__owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
-__owur int tls_construct_finished(SSL *s, const char *sender, int slen);
+__owur int tls_construct_finished(SSL *s, WPACKET *pkt);
__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst);
__owur WORK_STATE dtls_wait_for_dry(SSL *s);
+int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
+ RAW_EXTENSION **res, size_t *numfound, int *ad);
+
/* some client-only functions */
-__owur int tls_construct_client_hello(SSL *s);
+__owur int tls_construct_client_hello(SSL *s, WPACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt);
-__owur int tls_construct_client_verify(SSL *s);
+__owur int tls_construct_client_verify(SSL *s, WPACKET *pkt);
__owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst);
-__owur int tls_construct_client_certificate(SSL *s);
+__owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt);
__owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
-__owur int tls_construct_client_key_exchange(SSL *s);
+__owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt);
__owur int tls_client_key_exchange_post_work(SSL *s);
-__owur int tls_construct_cert_status(SSL *s);
-__owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s,
- PACKET *pkt);
+__owur int tls_construct_cert_status(SSL *s, WPACKET *pkt);
+__owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt);
__owur int ssl3_check_cert_and_algorithm(SSL *s);
-# ifndef OPENSSL_NO_NEXTPROTONEG
-__owur int tls_construct_next_proto(SSL *s);
-# endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+__owur int tls_construct_next_proto(SSL *s, WPACKET *pkt);
+#endif
__owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt);
/* some server-only functions */
__owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt);
__owur WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst);
-__owur int tls_construct_server_hello(SSL *s);
-__owur int tls_construct_hello_request(SSL *s);
-__owur int dtls_construct_hello_verify_request(SSL *s);
-__owur int tls_construct_server_certificate(SSL *s);
-__owur int tls_construct_server_key_exchange(SSL *s);
-__owur int tls_construct_certificate_request(SSL *s);
-__owur int tls_construct_server_done(SSL *s);
+__owur int tls_construct_server_hello(SSL *s, WPACKET *pkt);
+__owur int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt);
+__owur int tls_construct_server_certificate(SSL *s, WPACKET *pkt);
+__owur int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt);
+__owur int tls_construct_certificate_request(SSL *s, WPACKET *pkt);
+__owur int tls_construct_server_done(SSL *s, WPACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_client_certificate(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt);
__owur WORK_STATE tls_post_process_client_key_exchange(SSL *s, WORK_STATE wst);
__owur MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt);
-# ifndef OPENSSL_NO_NEXTPROTONEG
+#ifndef OPENSSL_NO_NEXTPROTONEG
__owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt);
-# endif
-__owur int tls_construct_new_session_ticket(SSL *s);
+#endif
+__owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt);