diff options
Diffstat (limited to 'src/ssl/internal.h')
| -rw-r--r-- | src/ssl/internal.h | 536 |
1 files changed, 341 insertions, 195 deletions
diff --git a/src/ssl/internal.h b/src/ssl/internal.h index 7d9a5ad..6fb8dbe 100644 --- a/src/ssl/internal.h +++ b/src/ssl/internal.h @@ -182,6 +182,7 @@ #define SSL_AES128GCM 0x00000010L #define SSL_AES256GCM 0x00000020L #define SSL_CHACHA20POLY1305 0x00000040L +#define SSL_eNULL 0x00000080L #define SSL_AES (SSL_AES128 | SSL_AES256 | SSL_AES128GCM | SSL_AES256GCM) @@ -202,25 +203,15 @@ #define SSL_TLSV1 SSL_SSLV3 #define SSL_TLSV1_2 0x00000004L -/* Bits for |algorithm2| (handshake digests and other extra flags). */ - -#define SSL_HANDSHAKE_MAC_MD5 0x10 -#define SSL_HANDSHAKE_MAC_SHA 0x20 -#define SSL_HANDSHAKE_MAC_SHA256 0x40 -#define SSL_HANDSHAKE_MAC_SHA384 0x80 -#define SSL_HANDSHAKE_MAC_DEFAULT \ - (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) +/* Bits for |algorithm_prf| (handshake digest). */ +#define SSL_HANDSHAKE_MAC_DEFAULT 0x1 +#define SSL_HANDSHAKE_MAC_SHA256 0x2 +#define SSL_HANDSHAKE_MAC_SHA384 0x4 /* SSL_MAX_DIGEST is the number of digest types which exist. When adding a new * one, update the table in ssl_cipher.c. */ #define SSL_MAX_DIGEST 4 -/* SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD is a flag in - * SSL_CIPHER.algorithm2 which indicates that the variable part of the nonce is - * included as a prefix of the record. (AES-GCM, for example, does with with an - * 8-byte variable nonce.) */ -#define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD (1<<22) - /* Bits for |algo_strength|, cipher strength information. */ #define SSL_MEDIUM 0x00000001L #define SSL_HIGH 0x00000002L @@ -236,11 +227,11 @@ int ssl_cipher_get_evp_aead(const EVP_AEAD **out_aead, size_t *out_fixed_iv_len, const SSL_CIPHER *cipher, uint16_t version); -/* ssl_get_handshake_digest looks up the |i|th handshake digest type and sets - * |*out_mask| to the |SSL_HANDSHAKE_MAC_*| mask and |*out_md| to the - * |EVP_MD|. It returns one on successs and zero if |i| >= |SSL_MAX_DIGEST|. */ -int ssl_get_handshake_digest(uint32_t *out_mask, const EVP_MD **out_md, - size_t i); +/* ssl_get_handshake_digest returns the |EVP_MD| corresponding to + * |algorithm_prf|. It returns SHA-1 for |SSL_HANDSHAKE_DEFAULT|. The caller is + * responsible for maintaining the additional MD5 digest and switching to + * SHA-256 in TLS 1.2. */ +const EVP_MD *ssl_get_handshake_digest(uint32_t algorithm_prf); /* ssl_create_cipher_list evaluates |rule_str| according to the ciphers in * |ssl_method|. It sets |*out_cipher_list| to a newly-allocated @@ -254,18 +245,12 @@ ssl_create_cipher_list(const SSL_PROTOCOL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) **out_cipher_list_by_id, const char *rule_str); -/* SSL_PKEY_* denote certificate types. */ -#define SSL_PKEY_RSA_ENC 0 -#define SSL_PKEY_RSA_SIGN 1 -#define SSL_PKEY_ECC 2 -#define SSL_PKEY_NUM 3 - /* ssl_cipher_get_value returns the cipher suite id of |cipher|. */ uint16_t ssl_cipher_get_value(const SSL_CIPHER *cipher); -/* ssl_cipher_get_cert_index returns the |SSL_PKEY_*| value corresponding to the - * certificate type of |cipher| or -1 if there is none. */ -int ssl_cipher_get_cert_index(const SSL_CIPHER *cipher); +/* ssl_cipher_get_key_type returns the |EVP_PKEY_*| value corresponding to the + * server key used in |cipher| or |EVP_PKEY_NONE| if there is none. */ +int ssl_cipher_get_key_type(const SSL_CIPHER *cipher); /* ssl_cipher_has_server_public_key returns 1 if |cipher| involves a server * public key in the key exchange, sent in a server Certificate message. @@ -275,11 +260,16 @@ int ssl_cipher_has_server_public_key(const SSL_CIPHER *cipher); /* ssl_cipher_requires_server_key_exchange returns 1 if |cipher| requires a * ServerKeyExchange message. Otherwise it returns 0. * - * Unlike ssl_cipher_has_server_public_key, some ciphers take optional - * ServerKeyExchanges. PSK and RSA_PSK only use the ServerKeyExchange to - * communicate a psk_identity_hint, so it is optional. */ + * Unlike |ssl_cipher_has_server_public_key|, this function may return zero + * while still allowing |cipher| an optional ServerKeyExchange. This is the + * case for plain PSK ciphers. */ int ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher); +/* ssl_cipher_get_record_split_len, for TLS 1.0 CBC mode ciphers, returns the + * length of an encrypted 1-byte record, for use in record-splitting. Otherwise + * it returns zero. */ +size_t ssl_cipher_get_record_split_len(const SSL_CIPHER *cipher); + /* Encryption layer. */ @@ -350,6 +340,238 @@ int SSL_AEAD_CTX_seal(SSL_AEAD_CTX *ctx, uint8_t *out, size_t *out_len, size_t in_len); +/* DTLS replay bitmap. */ + +/* DTLS1_BITMAP maintains a sliding window of 64 sequence numbers to detect + * replayed packets. It should be initialized by zeroing every field. */ +typedef struct dtls1_bitmap_st { + /* map is a bit mask of the last 64 sequence numbers. Bit + * |1<<i| corresponds to |max_seq_num - i|. */ + uint64_t map; + /* max_seq_num is the largest sequence number seen so far as a 64-bit + * integer. */ + uint64_t max_seq_num; +} DTLS1_BITMAP; + + +/* Record layer. */ + +/* ssl_record_prefix_len returns the length of the prefix before the ciphertext + * of a record for |ssl|. + * + * TODO(davidben): Expose this as part of public API once the high-level + * buffer-free APIs are available. */ +size_t ssl_record_prefix_len(const SSL *ssl); + +enum ssl_open_record_t { + ssl_open_record_success, + ssl_open_record_discard, + ssl_open_record_partial, + ssl_open_record_error, +}; + +/* tls_open_record decrypts a record from |in|. + * + * On success, it returns |ssl_open_record_success|. It sets |*out_type| to the + * record type, |*out_len| to the plaintext length, and writes the record body + * to |out|. It sets |*out_consumed| to the number of bytes of |in| consumed. + * Note that |*out_len| may be zero. + * + * If a record was successfully processed but should be discarded, it returns + * |ssl_open_record_discard| and sets |*out_consumed| to the number of bytes + * consumed. + * + * If the input did not contain a complete record, it returns + * |ssl_open_record_partial|. It sets |*out_consumed| to the total number of + * bytes necessary. It is guaranteed that a successful call to |tls_open_record| + * will consume at least that many bytes. + * + * On failure, it returns |ssl_open_record_error| and sets |*out_alert| to an + * alert to emit. + * + * If |in| and |out| alias, |out| must be <= |in| + |ssl_record_prefix_len|. */ +enum ssl_open_record_t tls_open_record( + SSL *ssl, uint8_t *out_type, uint8_t *out, size_t *out_len, + size_t *out_consumed, uint8_t *out_alert, size_t max_out, const uint8_t *in, + size_t in_len); + +/* dtls_open_record implements |tls_open_record| for DTLS. It never returns + * |ssl_open_record_partial| but otherwise behaves analogously. */ +enum ssl_open_record_t dtls_open_record( + SSL *ssl, uint8_t *out_type, uint8_t *out, size_t *out_len, + size_t *out_consumed, uint8_t *out_alert, size_t max_out, const uint8_t *in, + size_t in_len); + +/* ssl_seal_prefix_len returns the length of the prefix before the ciphertext + * when sealing a record with |ssl|. Note that this value may differ from + * |ssl_record_prefix_len| when TLS 1.0 CBC record-splitting is enabled. Sealing + * a small record may also result in a smaller output than this value. + * + * TODO(davidben): Expose this as part of public API once the high-level + * buffer-free APIs are available. */ +size_t ssl_seal_prefix_len(const SSL *ssl); + +/* ssl_max_seal_overhead returns the maximum overhead of sealing a record with + * |ssl|. This includes |ssl_seal_prefix_len|. + * + * TODO(davidben): Expose this as part of public API once the high-level + * buffer-free APIs are available. */ +size_t ssl_max_seal_overhead(const SSL *ssl); + +/* tls_seal_record seals a new record of type |type| and body |in| and writes it + * to |out|. At most |max_out| bytes will be written. It returns one on success + * and zero on error. If enabled, |tls_seal_record| implements TLS 1.0 CBC 1/n-1 + * record splitting and may write two records concatenated. + * + * For a large record, the ciphertext will begin |ssl_seal_prefix_len| bytes + * into out. Aligning |out| appropriately may improve performance. It writes at + * most |in_len| + |ssl_max_seal_overhead| bytes to |out|. + * + * If |in| and |out| alias, |out| + |ssl_seal_prefix_len| must be <= |in|. */ +int tls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out, + uint8_t type, const uint8_t *in, size_t in_len); + +enum dtls1_use_epoch_t { + dtls1_use_previous_epoch, + dtls1_use_current_epoch, +}; + +/* dtls_seal_record implements |tls_seal_record| for DTLS. |use_epoch| selects + * which epoch's cipher state to use. */ +int dtls_seal_record(SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out, + uint8_t type, const uint8_t *in, size_t in_len, + enum dtls1_use_epoch_t use_epoch); + + +/* Private key operations. */ + +/* ssl_has_private_key returns one if |ssl| has a private key + * configured and zero otherwise. */ +int ssl_has_private_key(SSL *ssl); + +/* ssl_private_key_* call the corresponding function on the + * |SSL_PRIVATE_KEY_METHOD| for |ssl|, if configured. Otherwise, they implement + * the operation with |EVP_PKEY|. */ + +int ssl_private_key_type(SSL *ssl); + +size_t ssl_private_key_max_signature_len(SSL *ssl); + +enum ssl_private_key_result_t ssl_private_key_sign( + SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out, const EVP_MD *md, + const uint8_t *in, size_t in_len); + +enum ssl_private_key_result_t ssl_private_key_sign_complete( + SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out); + + +/* Custom extensions */ + +/* ssl_custom_extension (a.k.a. SSL_CUSTOM_EXTENSION) is a structure that + * contains information about custom-extension callbacks. */ +struct ssl_custom_extension { + SSL_custom_ext_add_cb add_callback; + void *add_arg; + SSL_custom_ext_free_cb free_callback; + SSL_custom_ext_parse_cb parse_callback; + void *parse_arg; + uint16_t value; +}; + +void SSL_CUSTOM_EXTENSION_free(SSL_CUSTOM_EXTENSION *custom_extension); + +int custom_ext_add_clienthello(SSL *ssl, CBB *extensions); +int custom_ext_parse_serverhello(SSL *ssl, int *out_alert, uint16_t value, + const CBS *extension); +int custom_ext_parse_clienthello(SSL *ssl, int *out_alert, uint16_t value, + const CBS *extension); +int custom_ext_add_serverhello(SSL *ssl, CBB *extensions); + + +/* Handshake hash. + * + * The TLS handshake maintains a transcript of all handshake messages. At + * various points in the protocol, this is either a handshake buffer, a rolling + * hash (selected by cipher suite) or both. */ + +/* ssl3_init_handshake_buffer initializes the handshake buffer and resets the + * handshake hash. It returns one success and zero on failure. */ +int ssl3_init_handshake_buffer(SSL *ssl); + +/* ssl3_init_handshake_hash initializes the handshake hash based on the pending + * cipher and the contents of the handshake buffer. Subsequent calls to + * |ssl3_update_handshake_hash| will update the rolling hash. It returns one on + * success and zero on failure. It is an error to call this function after the + * handshake buffer is released. */ +int ssl3_init_handshake_hash(SSL *ssl); + +/* ssl3_free_handshake_buffer releases the handshake buffer. Subsequent calls + * to |ssl3_update_handshake_hash| will not update the handshake buffer. */ +void ssl3_free_handshake_buffer(SSL *ssl); + +/* ssl3_free_handshake_hash releases the handshake hash. */ +void ssl3_free_handshake_hash(SSL *s); + +/* ssl3_update_handshake_hash adds |in| to the handshake buffer and handshake + * hash, whichever is enabled. It returns one on success and zero on failure. */ +int ssl3_update_handshake_hash(SSL *ssl, const uint8_t *in, size_t in_len); + + +/* Transport buffers. */ + +/* ssl_read_buffer returns a pointer to contents of the read buffer. */ +uint8_t *ssl_read_buffer(SSL *ssl); + +/* ssl_read_buffer_len returns the length of the read buffer. */ +size_t ssl_read_buffer_len(const SSL *ssl); + +/* ssl_read_buffer_extend_to extends the read buffer to the desired length. For + * TLS, it reads to the end of the buffer until the buffer is |len| bytes + * long. For DTLS, it reads a new packet and ignores |len|. It returns one on + * success, zero on EOF, and a negative number on error. + * + * It is an error to call |ssl_read_buffer_extend_to| in DTLS when the buffer is + * non-empty. */ +int ssl_read_buffer_extend_to(SSL *ssl, size_t len); + +/* ssl_read_buffer_consume consumes |len| bytes from the read buffer. It + * advances the data pointer and decrements the length. The memory consumed will + * remain valid until the next call to |ssl_read_buffer_extend| or it is + * discarded with |ssl_read_buffer_discard|. */ +void ssl_read_buffer_consume(SSL *ssl, size_t len); + +/* ssl_read_buffer_discard discards the consumed bytes from the read buffer. If + * the buffer is now empty, it releases memory used by it. */ +void ssl_read_buffer_discard(SSL *ssl); + +/* ssl_read_buffer_clear releases all memory associated with the read buffer and + * zero-initializes it. */ +void ssl_read_buffer_clear(SSL *ssl); + +/* ssl_write_buffer_is_pending returns one if the write buffer has pending data + * and zero if is empty. */ +int ssl_write_buffer_is_pending(const SSL *ssl); + +/* ssl_write_buffer_init initializes the write buffer. On success, it sets + * |*out_ptr| to the start of the write buffer with space for up to |max_len| + * bytes. It returns one on success and zero on failure. Call + * |ssl_write_buffer_set_len| to complete initialization. */ +int ssl_write_buffer_init(SSL *ssl, uint8_t **out_ptr, size_t max_len); + +/* ssl_write_buffer_set_len is called after |ssl_write_buffer_init| to complete + * initialization after |len| bytes are written to the buffer. */ +void ssl_write_buffer_set_len(SSL *ssl, size_t len); + +/* ssl_write_buffer_flush flushes the write buffer to the transport. It returns + * one on success and <= 0 on error. For DTLS, whether or not the write + * succeeds, the write buffer will be cleared. */ +int ssl_write_buffer_flush(SSL *ssl); + +/* ssl_write_buffer_clear releases all memory associated with the write buffer + * and zero-initializes it. */ +void ssl_write_buffer_clear(SSL *ssl); + + /* Underdocumented functions. * * Functions below here haven't been touched up and may be underdocumented. */ @@ -483,8 +705,6 @@ int SSL_AEAD_CTX_seal(SSL_AEAD_CTX *ctx, uint8_t *out, size_t *out_len, * SSL_aRSA <- RSA_ENC | RSA_SIGN * SSL_aDSS <- DSA_SIGN */ -#define PENDING_SESSION -10000 - /* From RFC4492, used in encoding the curve type in ECParameters */ #define EXPLICIT_PRIME_CURVE_TYPE 1 #define EXPLICIT_CHAR2_CURVE_TYPE 2 @@ -495,18 +715,21 @@ enum ssl_hash_message_t { ssl_hash_message, }; -typedef struct cert_pkey_st { +/* Structure containing decoded values of signature algorithms extension */ +typedef struct tls_sigalgs_st { + uint8_t rsign; + uint8_t rhash; +} TLS_SIGALGS; + +typedef struct cert_st { X509 *x509; EVP_PKEY *privatekey; /* Chain for this certificate */ STACK_OF(X509) *chain; -} CERT_PKEY; -typedef struct cert_st { - /* Current active set */ - CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array - * Probably it would make more sense to store - * an index, not a pointer. */ + /* key_method, if non-NULL, is a set of callbacks to call for private key + * operations. */ + const SSL_PRIVATE_KEY_METHOD *key_method; /* For clients the following masks are of *disabled* key and auth algorithms * based on the current session. @@ -531,39 +754,18 @@ typedef struct cert_st { * keys. If NULL, a curve is selected automatically. See * |SSL_CTX_set_tmp_ecdh_callback|. */ EC_KEY *(*ecdh_tmp_cb)(SSL *ssl, int is_export, int keysize); - CERT_PKEY pkeys[SSL_PKEY_NUM]; - - /* Server-only: client_certificate_types is list of certificate types to - * include in the CertificateRequest message. - */ - uint8_t *client_certificate_types; - size_t num_client_certificate_types; - - /* signature algorithms peer reports: e.g. supported signature - * algorithms extension for server or as part of a certificate - * request for client. */ - uint8_t *peer_sigalgs; - /* Size of above array */ + + /* peer_sigalgs are the algorithm/hash pairs that the peer supports. These + * are taken from the contents of signature algorithms extension for a server + * or from the CertificateRequest for a client. */ + TLS_SIGALGS *peer_sigalgs; + /* peer_sigalgslen is the number of entries in |peer_sigalgs|. */ size_t peer_sigalgslen; - /* suppported signature algorithms. - * When set on a client this is sent in the client hello as the - * supported signature algorithms extension. For servers - * it represents the signature algorithms we are willing to use. */ - uint8_t *conf_sigalgs; - /* Size of above array */ - size_t conf_sigalgslen; - /* Client authentication signature algorithms, if not set then - * uses conf_sigalgs. On servers these will be the signature - * algorithms sent to the client in a cerificate request for TLS 1.2. - * On a client this represents the signature algortithms we are - * willing to use for client authentication. */ - uint8_t *client_sigalgs; - /* Size of above array */ - size_t client_sigalgslen; - /* Signature algorithms shared by client and server: cached - * because these are used most often. */ - TLS_SIGALGS *shared_sigalgs; - size_t shared_sigalgslen; + + /* digest_nids, if non-NULL, is the set of digests supported by |privatekey| + * in decreasing order of preference. */ + int *digest_nids; + size_t num_digest_nids; /* Certificate setup callback: if set is called whenever a * certificate may be required (client or server). the callback @@ -573,41 +775,8 @@ typedef struct cert_st { * supported signature algorithms or curves. */ int (*cert_cb)(SSL *ssl, void *arg); void *cert_cb_arg; - - /* Optional X509_STORE for chain building or certificate validation - * If NULL the parent SSL_CTX store is used instead. */ - X509_STORE *chain_store; - X509_STORE *verify_store; } CERT; -typedef struct sess_cert_st { - STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */ - - /* The 'peer_...' members are used only by clients. */ - int peer_cert_type; - - CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ - CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; - /* Obviously we don't have the private keys of these, - * so maybe we shouldn't even use the CERT_PKEY type here. */ - - DH *peer_dh_tmp; - EC_KEY *peer_ecdh_tmp; -} SESS_CERT; - -/* Structure containing decoded values of signature algorithms extension */ -struct tls_sigalgs_st { - /* NID of hash algorithm */ - int hash_nid; - /* NID of signature algorithm */ - int sign_nid; - /* Combined hash and signature NID */ - int signandhash_nid; - /* Raw values used in extension */ - uint8_t rsign; - uint8_t rhash; -}; - /* SSL_METHOD is a compatibility structure to support the legacy version-locked * methods. */ struct ssl_method_st { @@ -634,8 +803,6 @@ struct ssl_protocol_method_st { void (*ssl_read_close_notify)(SSL *s); int (*ssl_write_app_data)(SSL *s, const void *buf_, int len); int (*ssl_dispatch_alert)(SSL *s); - long (*ssl_ctrl)(SSL *s, int cmd, long larg, void *parg); - long (*ssl_ctx_ctrl)(SSL_CTX *ctx, int cmd, long larg, void *parg); /* supports_cipher returns one if |cipher| is supported by this protocol and * zero otherwise. */ int (*supports_cipher)(const SSL_CIPHER *cipher); @@ -698,15 +865,6 @@ struct ssl3_enc_method { #define DTLS1_AL_HEADER_LENGTH 2 -typedef struct dtls1_bitmap_st { - /* map is a bit mask of the last 64 sequence numbers. Bit - * |1<<i| corresponds to |max_seq_num - i|. */ - uint64_t map; - /* max_seq_num is the largest sequence number seen so far. It - * is a 64-bit value in big-endian encoding. */ - uint8_t max_seq_num[8]; -} DTLS1_BITMAP; - /* TODO(davidben): This structure is used for both incoming messages and * outgoing messages. |is_ccs| and |epoch| are only used in the latter and * should be moved elsewhere. */ @@ -791,6 +949,7 @@ extern const SSL3_ENC_METHOD TLSv1_enc_data; extern const SSL3_ENC_METHOD TLSv1_1_enc_data; extern const SSL3_ENC_METHOD TLSv1_2_enc_data; extern const SSL3_ENC_METHOD SSLv3_enc_data; +extern const SRTP_PROTECTION_PROFILE kSRTPProfiles[]; void ssl_clear_cipher_ctx(SSL *s); int ssl_clear_bad_session(SSL *s); @@ -798,11 +957,24 @@ CERT *ssl_cert_new(void); CERT *ssl_cert_dup(CERT *cert); void ssl_cert_clear_certs(CERT *c); void ssl_cert_free(CERT *c); -SESS_CERT *ssl_sess_cert_new(void); -void ssl_sess_cert_free(SESS_CERT *sc); -int ssl_set_peer_cert_type(SESS_CERT *c, int type); int ssl_get_new_session(SSL *s, int session); -int ssl_get_prev_session(SSL *s, const struct ssl_early_callback_ctx *ctx); + +enum ssl_session_result_t { + ssl_session_success, + ssl_session_error, + ssl_session_retry, +}; + +/* ssl_get_prev_session looks up the previous session based on |ctx|. On + * success, it sets |*out_session| to the session or NULL if none was found. It + * sets |*out_send_ticket| to whether a ticket should be sent at the end of the + * handshake. If the session could not be looked up synchronously, it returns + * |ssl_session_retry| and should be called again. Otherwise, it returns + * |ssl_session_error|. */ +enum ssl_session_result_t ssl_get_prev_session( + SSL *ssl, SSL_SESSION **out_session, int *out_send_ticket, + const struct ssl_early_callback_ctx *ctx); + STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const CBS *cbs); int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, uint8_t *p); struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_dup( @@ -813,21 +985,16 @@ struct ssl_cipher_preference_list_st *ssl_cipher_preference_list_from_ciphers( STACK_OF(SSL_CIPHER) *ciphers); struct ssl_cipher_preference_list_st *ssl_get_cipher_preferences(SSL *s); -int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain); -int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain); -int ssl_cert_add0_chain_cert(CERT *c, X509 *x); -int ssl_cert_add1_chain_cert(CERT *c, X509 *x); -int ssl_cert_select_current(CERT *c, X509 *x); -void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg); - -int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); -int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l); -int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags); -int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref); -CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); -EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c); +int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain); +int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain); +int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509); +int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509); +void ssl_cert_set_cert_cb(CERT *cert, + int (*cb)(SSL *ssl, void *arg), void *arg); + +int ssl_verify_cert_chain(SSL *ssl, STACK_OF(X509) *cert_chain); +int ssl_add_cert_chain(SSL *s, unsigned long *l); void ssl_update_cache(SSL *s, int mode); -int ssl_cert_type(EVP_PKEY *pkey); /* ssl_get_compatible_server_ciphers determines the key exchange and * authentication cipher suite masks compatible with the server configuration @@ -843,10 +1010,9 @@ int ssl_verify_alarm_type(long type); * |len|. It returns one on success and zero on failure. */ int ssl_fill_hello_random(uint8_t *out, size_t len, int is_server); -int ssl3_init_finished_mac(SSL *s); int ssl3_send_server_certificate(SSL *s); int ssl3_send_new_session_ticket(SSL *s); -int ssl3_send_cert_status(SSL *s); +int ssl3_send_certificate_status(SSL *s); int ssl3_get_finished(SSL *s, int state_a, int state_b); int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); int ssl3_prf(SSL *s, uint8_t *out, size_t out_len, const uint8_t *secret, @@ -867,11 +1033,11 @@ int ssl3_hash_current_message(SSL *s); /* ssl3_cert_verify_hash writes the CertificateVerify hash into the bytes * pointed to by |out| and writes the number of bytes to |*out_len|. |out| must * have room for EVP_MAX_MD_SIZE bytes. For TLS 1.2 and up, |*out_md| is used - * for the hash function, otherwise the hash function depends on the type of - * |pkey| and is written to |*out_md|. It returns one on success and zero on + * for the hash function, otherwise the hash function depends on |pkey_type| + * and is written to |*out_md|. It returns one on success and zero on * failure. */ int ssl3_cert_verify_hash(SSL *s, uint8_t *out, size_t *out_len, - const EVP_MD **out_md, EVP_PKEY *pkey); + const EVP_MD **out_md, int pkey_type); int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); int ssl3_supports_cipher(const SSL_CIPHER *cipher); @@ -884,29 +1050,15 @@ int ssl3_write_app_data(SSL *ssl, const void *buf, int len); int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); int ssl3_final_finish_mac(SSL *s, const char *sender, int slen, uint8_t *p); int ssl3_cert_verify_mac(SSL *s, int md_nid, uint8_t *p); -int ssl3_finish_mac(SSL *s, const uint8_t *buf, int len); -void ssl3_free_digest_list(SSL *s); -int ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk); +int ssl3_output_cert_chain(SSL *s); const SSL_CIPHER *ssl3_choose_cipher( SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, struct ssl_cipher_preference_list_st *srvr); -int ssl3_setup_read_buffer(SSL *s); -int ssl3_setup_write_buffer(SSL *s); -int ssl3_release_read_buffer(SSL *s); -int ssl3_release_write_buffer(SSL *s); - -enum should_free_handshake_buffer_t { - free_handshake_buffer, - dont_free_handshake_buffer, -}; -int ssl3_digest_cached_records(SSL *s, enum should_free_handshake_buffer_t); int ssl3_new(SSL *s); void ssl3_free(SSL *s); int ssl3_accept(SSL *s); int ssl3_connect(SSL *s); -long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); -long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); /* ssl3_record_sequence_update increments the sequence number in |seq|. It * returns one on success and zero on wraparound. */ @@ -917,13 +1069,7 @@ int ssl3_do_change_cipher_spec(SSL *ssl); int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len); int ssl3_handshake_write(SSL *s); -enum dtls1_use_epoch_t { - dtls1_use_previous_epoch, - dtls1_use_current_epoch, -}; - int dtls1_do_write(SSL *s, int type, enum dtls1_use_epoch_t use_epoch); -int ssl3_read_n(SSL *s, int n, int extend); int dtls1_read_app_data(SSL *ssl, uint8_t *buf, int len, int peek); void dtls1_read_close_notify(SSL *ssl); int dtls1_read_bytes(SSL *s, int type, uint8_t *buf, int len, int peek); @@ -970,11 +1116,9 @@ int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); int ssl3_send_client_key_exchange(SSL *s); int ssl3_get_server_key_exchange(SSL *s); int ssl3_get_server_certificate(SSL *s); -int ssl3_check_cert_and_algorithm(SSL *s); int ssl3_send_next_proto(SSL *s); int ssl3_send_channel_id(SSL *s); - -int dtls1_client_hello(SSL *s); +int ssl3_verify_server_cert(SSL *s); /* some server-only functions */ int ssl3_get_initial_bytes(SSL *s); @@ -997,7 +1141,6 @@ void dtls1_free(SSL *s); long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, enum ssl_hash_message_t hash_message, int *ok); -int dtls1_get_record(SSL *s); int dtls1_dispatch_alert(SSL *s); int ssl_init_wbio_buffer(SSL *s, int push); @@ -1027,12 +1170,15 @@ int tls1_export_keying_material(SSL *s, uint8_t *out, size_t out_len, int tls1_alert_code(int code); int ssl3_alert_code(int code); -int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); - char ssl_early_callback_init(struct ssl_early_callback_ctx *ctx); int tls1_ec_curve_id2nid(uint16_t curve_id); int tls1_ec_nid2curve_id(uint16_t *out_curve_id, int nid); +/* tls1_ec_curve_id2name returns a human-readable name for the + * curve specified by the TLS curve id in |curve_id|. If the + * curve is unknown, it returns NULL. */ +const char* tls1_ec_curve_id2name(uint16_t curve_id); + /* tls1_check_curve parses ECParameters out of |cbs|, modifying it. It * checks the curve is one of our preferences and writes the * NamedCurve value to |*out_curve_id|. It returns one on success and @@ -1062,27 +1208,38 @@ int tls1_check_ec_tmp_key(SSL *s); int tls1_shared_list(SSL *s, const uint8_t *l1, size_t l1len, const uint8_t *l2, size_t l2len, int nmatch); -uint8_t *ssl_add_clienthello_tlsext(SSL *s, uint8_t *buf, uint8_t *limit, - size_t header_len); -uint8_t *ssl_add_serverhello_tlsext(SSL *s, uint8_t *buf, uint8_t *limit); +uint8_t *ssl_add_clienthello_tlsext(SSL *s, uint8_t *const buf, + uint8_t *const limit, size_t header_len); +uint8_t *ssl_add_serverhello_tlsext(SSL *s, uint8_t *const buf, + uint8_t *const limit); int ssl_parse_clienthello_tlsext(SSL *s, CBS *cbs); int ssl_parse_serverhello_tlsext(SSL *s, CBS *cbs); -int ssl_prepare_clienthello_tlsext(SSL *s); -int ssl_prepare_serverhello_tlsext(SSL *s); #define tlsext_tick_md EVP_sha256 -int tls1_process_ticket(SSL *s, const struct ssl_early_callback_ctx *ctx, - SSL_SESSION **ret); -int tls12_get_sigandhash(uint8_t *p, const EVP_PKEY *pk, const EVP_MD *md); -int tls12_get_sigid(const EVP_PKEY *pk); +/* tls_process_ticket processes the session ticket extension. On success, it + * sets |*out_session| to the decrypted session or NULL if the ticket was + * rejected. It sets |*out_send_ticket| to whether a new ticket should be sent + * at the end of the handshake. It returns one on success and zero on fatal + * error. */ +int tls_process_ticket(SSL *ssl, SSL_SESSION **out_session, + int *out_send_ticket, const uint8_t *ticket, + size_t ticket_len, const uint8_t *session_id, + size_t session_id_len); + +/* tls12_get_sigandhash assembles the SignatureAndHashAlgorithm corresponding to + * |ssl|'s private key and |md|. The two-byte value is written to |p|. It + * returns one on success and zero on failure. */ +int tls12_get_sigandhash(SSL *ssl, uint8_t *p, const EVP_MD *md); +int tls12_get_sigid(int pkey_type); const EVP_MD *tls12_get_hash(uint8_t hash_alg); -int tls1_channel_id_hash(EVP_MD_CTX *ctx, SSL *s); -int tls1_record_handshake_hashes_for_channel_id(SSL *s); +/* tls1_channel_id_hash computes the hash to be signed by Channel ID and writes + * it to |out|, which must contain at least |EVP_MAX_MD_SIZE| bytes. It returns + * one on success and zero on failure. */ +int tls1_channel_id_hash(SSL *ssl, uint8_t *out, size_t *out_len); -int tls1_set_sigalgs_list(CERT *c, const char *str, int client); -int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client); +int tls1_record_handshake_hashes_for_channel_id(SSL *s); /* ssl_ctx_log_rsa_client_key_exchange logs |premaster| to |ctx|, if logging is * enabled. It returns one on success and zero on failure. The entry is @@ -1136,27 +1293,16 @@ int ssl3_is_version_enabled(SSL *s, uint16_t version); * the wire version except at API boundaries. */ uint16_t ssl3_version_from_wire(SSL *s, uint16_t wire_version); -int ssl_add_serverhello_renegotiate_ext(SSL *s, uint8_t *p, int *len, - int maxlen); -int ssl_parse_serverhello_renegotiate_ext(SSL *s, CBS *cbs, int *out_alert); -int ssl_add_clienthello_renegotiate_ext(SSL *s, uint8_t *p, int *len, - int maxlen); -int ssl_parse_clienthello_renegotiate_ext(SSL *s, CBS *cbs, int *out_alert); -uint32_t ssl_get_algorithm2(SSL *s); -int tls1_process_sigalgs(SSL *s, const CBS *sigalgs); +uint32_t ssl_get_algorithm_prf(SSL *s); +int tls1_parse_peer_sigalgs(SSL *s, const CBS *sigalgs); -/* tls1_choose_signing_digest returns a digest for use with |pkey| based on the - * peer's preferences recorded for |s| and the digests supported by |pkey|. */ -const EVP_MD *tls1_choose_signing_digest(SSL *s, EVP_PKEY *pkey); +/* tls1_choose_signing_digest returns a digest for use with |ssl|'s private key + * based on the peer's preferences the digests supported. */ +const EVP_MD *tls1_choose_signing_digest(SSL *ssl); size_t tls12_get_psigalgs(SSL *s, const uint8_t **psigs); int tls12_check_peer_sigalg(const EVP_MD **out_md, int *out_alert, SSL *s, CBS *cbs, EVP_PKEY *pkey); void ssl_set_client_disabled(SSL *s); -int ssl_add_clienthello_use_srtp_ext(SSL *s, uint8_t *p, int *len, int maxlen); -int ssl_parse_clienthello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert); -int ssl_add_serverhello_use_srtp_ext(SSL *s, uint8_t *p, int *len, int maxlen); -int ssl_parse_serverhello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert); - #endif /* OPENSSL_HEADER_SSL_INTERNAL_H */ |