/* 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 HELLO_RETRY_REQUEST_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 */
+/* This extension is only allowed in TLS */
+#define EXT_TLS_ONLY 0x0001
+/* This extension is only allowed in DTLS */
+#define EXT_DTLS_ONLY 0x0002
+/* Some extensions may be allowed in DTLS but we don't implement them for it */
+#define EXT_TLS_IMPLEMENTATION_ONLY 0x0004
+/* Most extensions are not defined for SSLv3 but EXT_TYPE_renegotiate is */
+#define EXT_SSL3_ALLOWED 0x0008
+/* Extension is only defined for TLS1.2 and above */
+#define EXT_TLS1_2_AND_BELOW_ONLY 0x0010
+/* Extension is only defined for TLS1.3 and above */
+#define EXT_TLS1_3_ONLY 0x0020
+#define EXT_CLIENT_HELLO 0x0040
+/* Really means TLS1.2 or below */
+#define EXT_TLS1_2_SERVER_HELLO 0x0080
+#define EXT_TLS1_3_SERVER_HELLO 0x0100
+#define EXT_TLS1_3_ENCRYPTED_EXTENSIONS 0x0200
+#define EXT_TLS1_3_HELLO_RETRY_REQUEST 0x0400
+#define EXT_TLS1_3_CERTIFICATE 0x0800
+#define EXT_TLS1_3_NEW_SESSION_TICKET 0x1000
+
/* 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);
+
+int check_in_list(SSL *s, unsigned int group_id, const unsigned char *groups,
+ size_t num_groups, int checkallow);
+
/*
* TLS/DTLS client state machine functions
*/
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, WPACKET *pkt,
- int (**confunc) (SSL *s, WPACKET *pkt),
- int *mt);
-unsigned long ossl_statem_client_max_message_size(SSL *s);
+ 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);
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, WPACKET *pkt,
- int (**confunc) (SSL *s, WPACKET *pkt),
- int *mt);
-unsigned long ossl_statem_server_max_message_size(SSL *s);
+ 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, WPACKET *pkt);
__owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
__owur int tls_construct_finished(SSL *s, WPACKET *pkt);
-__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst);
+__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs);
__owur WORK_STATE dtls_wait_for_dry(SSL *s);
/* some client-only functions */
__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 int tls_process_cert_status_body(SSL *s, PACKET *pkt, int *al);
__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, WPACKET *pkt);
+__owur int tls_construct_cert_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, 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, WPACKET *pkt);
__owur int tls_client_key_exchange_post_work(SSL *s);
+__owur int tls_construct_cert_status_body(SSL *s, WPACKET *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);
#ifndef OPENSSL_NO_NEXTPROTONEG
__owur int tls_construct_next_proto(SSL *s, WPACKET *pkt);
#endif
+__owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt);
__owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt);
/* some server-only functions */
__owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt);
#endif
__owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt);
+
+
+/* Extension processing */
+
+__owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
+ RAW_EXTENSION **res, int *al);
+__owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context,
+ RAW_EXTENSION *exts, X509 *x, size_t chainidx,
+ int *al);
+__owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts,
+ X509 *x, size_t chainidx, int *al);
+__owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+
+__owur int tls_psk_do_binder(SSL *s, const EVP_MD *md,
+ const unsigned char *msgstart,
+ size_t binderoffset, const unsigned char *binderin,
+ unsigned char *binderout,
+ SSL_SESSION *sess, int sign);
+
+/* Server Extension processing */
+int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#ifndef OPENSSL_NO_SRP
+int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_EC
+int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_OCSP
+int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_SRTP
+int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+
+int tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_stoc_server_name(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#ifndef OPENSSL_NO_EC
+int tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+int tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_OCSP
+int tls_construct_stoc_status_request(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+int tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_SRTP
+int tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+int tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_construct_stoc_key_share(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+/*
+ * Not in public headers as this is not an official extension. Only used when
+ * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set.
+ */
+#define TLSEXT_TYPE_cryptopro_bug 0xfde8
+int tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+
+/* Client Extension processing */
+int tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#ifndef OPENSSL_NO_SRP
+int tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_EC
+int tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#ifndef OPENSSL_NO_OCSP
+int tls_construct_ctos_status_request(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+int tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_SRTP
+int tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+int tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_CT
+int tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_construct_ctos_key_share(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_ctos_padding(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#ifndef OPENSSL_NO_EC
+int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#ifndef OPENSSL_NO_OCSP
+int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_CT
+int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+#ifndef OPENSSL_NO_NEXTPROTONEG
+int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#ifndef OPENSSL_NO_SRTP
+int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+#endif
+int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
+int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx, int *al);
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