#define SSL3_AL_FATAL			2

#define SSL3_AD_CLOSE_NOTIFY		 0
#define SSL3_AD_UNEXPECTED_MESSAGE	10	/* fatal */
#define SSL3_AD_BAD_RECORD_MAC		20	/* fatal */
#define SSL3_AD_DECOMPRESSION_FAILURE	30	/* fatal */
#define SSL3_AD_HANDSHAKE_FAILURE	40	/* fatal */
#define SSL3_AD_NO_CERTIFICATE		41
#define SSL3_AD_BAD_CERTIFICATE		42
#define SSL3_AD_UNSUPPORTED_CERTIFICATE	43
#define SSL3_AD_CERTIFICATE_REVOKED	44
#define SSL3_AD_CERTIFICATE_EXPIRED	45
#define SSL3_AD_CERTIFICATE_UNKNOWN	46
#define SSL3_AD_ILLEGAL_PARAMETER	47	/* fatal */

typedef struct ssl3_record_st
	{
/*r */	int type;               /* type of record */
/*rw*/	unsigned int length;    /* How many bytes available */
/*r */	unsigned int off;       /* read/write offset into 'buf' */
/*rw*/	unsigned char *data;    /* pointer to the record data */
/*rw*/	unsigned char *input;   /* where the decode bytes are */
/*r */	unsigned char *comp;    /* only used with decompression - malloc()ed */
/*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
/*r */  PQ_64BIT seq_num;       /* sequence number, needed by DTLS1 */
	} SSL3_RECORD;

typedef struct ssl3_buffer_st
	{
	unsigned char *buf;     /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
	                         * see ssl3_setup_buffers() */
	size_t len;             /* buffer size */
	int offset;             /* where to 'copy from' */
	int left;               /* how many bytes left */
	} SSL3_BUFFER;

#define SSL3_CT_RSA_SIGN			1
#define SSL3_CT_DSS_SIGN			2
#define SSL3_CT_RSA_FIXED_DH			3
#define SSL3_CT_DSS_FIXED_DH			4
#define SSL3_CT_RSA_EPHEMERAL_DH		5
#define SSL3_CT_DSS_EPHEMERAL_DH		6
#define SSL3_CT_FORTEZZA_DMS			20
/* SSL3_CT_NUMBER is used to size arrays and it must be large
 * enough to contain all of the cert types defined either for
 * SSLv3 and TLSv1.
 */
#define SSL3_CT_NUMBER			7


#define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS	0x0001
#define SSL3_FLAGS_DELAY_CLIENT_FINISHED	0x0002
#define SSL3_FLAGS_POP_BUFFER			0x0004
#define TLS1_FLAGS_TLS_PADDING_BUG		0x0008

typedef struct ssl3_state_st
	{
	long flags;
	int delay_buf_pop_ret;

	unsigned char read_sequence[8];
	unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
	unsigned char write_sequence[8];
	unsigned char write_mac_secret[EVP_MAX_MD_SIZE];

	unsigned char server_random[SSL3_RANDOM_SIZE];
	unsigned char client_random[SSL3_RANDOM_SIZE];

	/* flags for countermeasure against known-IV weakness */
	int need_empty_fragments;
	int empty_fragment_done;

	SSL3_BUFFER rbuf;	/* read IO goes into here */
	SSL3_BUFFER wbuf;	/* write IO goes into here */

	SSL3_RECORD rrec;	/* each decoded record goes in here */
	SSL3_RECORD wrec;	/* goes out from here */

	/* storage for Alert/Handshake protocol data received but not
	 * yet processed by ssl3_read_bytes: */
	unsigned char alert_fragment[2];
	unsigned int alert_fragment_len;
	unsigned char handshake_fragment[4];
	unsigned int handshake_fragment_len;

	/* partial write - check the numbers match */
	unsigned int wnum;	/* number of bytes sent so far */
	int wpend_tot;		/* number bytes written */
	int wpend_type;
	int wpend_ret;		/* number of bytes submitted */
	const unsigned char *wpend_buf;

	/* used during startup, digest all incoming/outgoing packets */
	EVP_MD_CTX finish_dgst1;
	EVP_MD_CTX finish_dgst2;

	/* this is set whenerver we see a change_cipher_spec message
	 * come in when we are not looking for one */
	int change_cipher_spec;

	int warn_alert;
	int fatal_alert;
	/* we allow one fatal and one warning alert to be outstanding,
	 * send close alert via the warning alert */
	int alert_dispatch;
	unsigned char send_alert[2];

	/* This flag is set when we should renegotiate ASAP, basically when
	 * there is no more data in the read or write buffers */
	int renegotiate;
	int total_renegotiations;
	int num_renegotiations;

	int in_read_app_data;

	struct	{
		/* actually only needs to be 16+20 */
		unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];

		/* actually only need to be 16+20 for SSLv3 and 12 for TLS */
		unsigned char finish_md[EVP_MAX_MD_SIZE*2];
		int finish_md_len;
		unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
		int peer_finish_md_len;
		
		unsigned long message_size;
		int message_type;

		/* used to hold the new cipher we are going to use */
		SSL_CIPHER *new_cipher;
#ifndef OPENSSL_NO_DH
		DH *dh;
#endif

#ifndef OPENSSL_NO_ECDH
		EC_KEY *ecdh; /* holds short lived ECDH key */
#endif

		/* used when SSL_ST_FLUSH_DATA is entered */
		int next_state;			

		int reuse_message;

		/* used for certificate requests */
		int cert_req;
		int ctype_num;
		char ctype[SSL3_CT_NUMBER];
		STACK_OF(X509_NAME) *ca_names;

		int use_rsa_tmp;

		int key_block_length;
		unsigned char *key_block;

		const EVP_CIPHER *new_sym_enc;
		const EVP_MD *new_hash;
#ifndef OPENSSL_NO_COMP
		const SSL_COMP *new_compression;
#else
		char *new_compression;
#endif
		int cert_request;
		} tmp;

	} SSL3_STATE;


/* SSLv3 */
/*client */
/* extra state */
#define SSL3_ST_CW_FLUSH		(0x100|SSL_ST_CONNECT)
/* write to server */
#define SSL3_ST_CW_CLNT_HELLO_A		(0x110|SSL_ST_CONNECT)
#define SSL3_ST_CW_CLNT_HELLO_B		(0x111|SSL_ST_CONNECT)
/* read from server */
#define SSL3_ST_CR_SRVR_HELLO_A		(0x120|SSL_ST_CONNECT)
#define SSL3_ST_CR_SRVR_HELLO_B		(0x121|SSL_ST_CONNECT)
#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
#define SSL3_ST_CR_CERT_A		(0x130|SSL_ST_CONNECT)
#define SSL3_ST_CR_CERT_B		(0x131|SSL_ST_CONNECT)
#define SSL3_ST_CR_KEY_EXCH_A		(0x140|SSL_ST_CONNECT)
#define SSL3_ST_CR_KEY_EXCH_B		(0x141|SSL_ST_CONNECT)
#define SSL3_ST_CR_CERT_REQ_A		(0x150|SSL_ST_CONNECT)
#define SSL3_ST_CR_CERT_REQ_B		(0x151|SSL_ST_CONNECT)
#define SSL3_ST_CR_SRVR_DONE_A		(0x160|SSL_ST_CONNECT)
#define SSL3_ST_CR_SRVR_DONE_B		(0x161|SSL_ST_CONNECT)
/* write to server */
#define SSL3_ST_CW_CERT_A		(0x170|SSL_ST_CONNECT)
#define SSL3_ST_CW_CERT_B		(0x171|SSL_ST_CONNECT)
#define SSL3_ST_CW_CERT_C		(0x172|SSL_ST_CONNECT)
#define SSL3_ST_CW_CERT_D		(0x173|SSL_ST_CONNECT)
#define SSL3_ST_CW_KEY_EXCH_A		(0x180|SSL_ST_CONNECT)
#define SSL3_ST_CW_KEY_EXCH_B		(0x181|SSL_ST_CONNECT)
#define SSL3_ST_CW_CERT_VRFY_A		(0x190|SSL_ST_CONNECT)
#define SSL3_ST_CW_CERT_VRFY_B		(0x191|SSL_ST_CONNECT)
#define SSL3_ST_CW_CHANGE_A		(0x1A0|SSL_ST_CONNECT)
#define SSL3_ST_CW_CHANGE_B		(0x1A1|SSL_ST_CONNECT)
#define SSL3_ST_CW_FINISHED_A		(0x1B0|SSL_ST_CONNECT)
#define SSL3_ST_CW_FINISHED_B		(0x1B1|SSL_ST_CONNECT)
/* read from server */
#define SSL3_ST_CR_CHANGE_A		(0x1C0|SSL_ST_CONNECT)
#define SSL3_ST_CR_CHANGE_B		(0x1C1|SSL_ST_CONNECT)
#define SSL3_ST_CR_FINISHED_A		(0x1D0|SSL_ST_CONNECT)
#define SSL3_ST_CR_FINISHED_B		(0x1D1|SSL_ST_CONNECT)

/* server */
/* extra state */
#define SSL3_ST_SW_FLUSH		(0x100|SSL_ST_ACCEPT)
/* read from client */
/* Do not change the number values, they do matter */
#define SSL3_ST_SR_CLNT_HELLO_A		(0x110|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CLNT_HELLO_B		(0x111|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CLNT_HELLO_C		(0x112|SSL_ST_ACCEPT)
/* write to client */
#define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
#define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
#define SSL3_ST_SW_HELLO_REQ_A		(0x120|SSL_ST_ACCEPT)
#define SSL3_ST_SW_HELLO_REQ_B		(0x121|SSL_ST_ACCEPT)
#define SSL3_ST_SW_HELLO_REQ_C		(0x122|SSL_ST_ACCEPT)
#define SSL3_ST_SW_SRVR_HELLO_A		(0x130|SSL_ST_ACCEPT)
#define SSL3_ST_SW_SRVR_HELLO_B		(0x131|SSL_ST_ACCEPT)
#define SSL3_ST_SW_CERT_A		(0x140|SSL_ST_ACCEPT)
#define SSL3_ST_SW_CERT_B		(0x141|SSL_ST_ACCEPT)
#define SSL3_ST_SW_KEY_EXCH_A		(0x150|SSL_ST_ACCEPT)
#define SSL3_ST_SW_KEY_EXCH_B		(0x151|SSL_ST_ACCEPT)
#define SSL3_ST_SW_CERT_REQ_A		(0x160|SSL_ST_ACCEPT)
#define SSL3_ST_SW_CERT_REQ_B		(0x161|SSL_ST_ACCEPT)
#define SSL3_ST_SW_SRVR_DONE_A		(0x170|SSL_ST_ACCEPT)
#define SSL3_ST_SW_SRVR_DONE_B		(0x171|SSL_ST_ACCEPT)
/* read from client */
#define SSL3_ST_SR_CERT_A		(0x180|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CERT_B		(0x181|SSL_ST_ACCEPT)
#define SSL3_ST_SR_KEY_EXCH_A		(0x190|SSL_ST_ACCEPT)
#define SSL3_ST_SR_KEY_EXCH_B		(0x191|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CERT_VRFY_A		(0x1A0|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CERT_VRFY_B		(0x1A1|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CHANGE_A		(0x1B0|SSL_ST_ACCEPT)
#define SSL3_ST_SR_CHANGE_B		(0x1B1|SSL_ST_ACCEPT)
#define SSL3_ST_SR_FINISHED_A		(0x1C0|SSL_ST_ACCEPT)
#define SSL3_ST_SR_FINISHED_B		(0x1C1|SSL_ST_ACCEPT)
/* write to client */
#define SSL3_ST_SW_CHANGE_A		(0x1D0|SSL_ST_ACCEPT)
#define SSL3_ST_SW_CHANGE_B		(0x1D1|SSL_ST_ACCEPT)
#define SSL3_ST_SW_FINISHED_A		(0x1E0|SSL_ST_ACCEPT)
#define SSL3_ST_SW_FINISHED_B		(0x1E1|SSL_ST_ACCEPT)

#define SSL3_MT_HELLO_REQUEST			0
#define SSL3_MT_CLIENT_HELLO			1
#define SSL3_MT_SERVER_HELLO			2
#define SSL3_MT_CERTIFICATE			11
#define SSL3_MT_SERVER_KEY_EXCHANGE		12
#define SSL3_MT_CERTIFICATE_REQUEST		13
#define SSL3_MT_SERVER_DONE			14
#define SSL3_MT_CERTIFICATE_VERIFY		15
#define SSL3_MT_CLIENT_KEY_EXCHANGE		16
#define SSL3_MT_FINISHED			20
#define DTLS1_MT_HELLO_VERIFY_REQUEST    3


#define SSL3_MT_CCS				1

/* These are used when changing over to a new cipher */
#define SSL3_CC_READ		0x01
#define SSL3_CC_WRITE		0x02
#define SSL3_CC_CLIENT		0x10
#define SSL3_CC_SERVER		0x20
#define SSL3_CHANGE_CIPHER_CLIENT_WRITE	(SSL3_CC_CLIENT|SSL3_CC_WRITE)	
#define SSL3_CHANGE_CIPHER_SERVER_READ	(SSL3_CC_SERVER|SSL3_CC_READ)
#define SSL3_CHANGE_CIPHER_CLIENT_READ	(SSL3_CC_CLIENT|SSL3_CC_READ)
#define SSL3_CHANGE_CIPHER_SERVER_WRITE	(SSL3_CC_SERVER|SSL3_CC_WRITE)

#ifdef  __cplusplus
}
#endif
#endif