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Commit	Line	Data
	1	/* $OpenBSD: packet.h,v 1.46 2008/02/22 20:44:02 dtucker Exp $ */
	2
	3	/*
	4	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	5	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	6	* All rights reserved
	7	* Interface for the packet protocol functions.
	8	*
	9	* As far as I am concerned, the code I have written for this software
	10	* can be used freely for any purpose. Any derived versions of this
	11	* software must be clearly marked as such, and if the derived work is
	12	* incompatible with the protocol description in the RFC file, it must be
	13	* called by a name other than "ssh" or "Secure Shell".
	14	*/
	15
	16	#ifndef PACKET_H
	17	#define PACKET_H
	18
	19	#include <termios.h>
	20
	21	#include <openssl/bn.h>
	22
	23	void
	24	packet_request_rekeying(void);
	25
	26	void packet_set_connection(int, int);
	27	void packet_set_nonblocking(void);
	28	int packet_get_connection_in(void);
	29	int packet_get_connection_out(void);
	30	void packet_close(void);
	31	void packet_set_encryption_key(const u_char *, u_int, int);
	32	u_int packet_get_encryption_key(u_char *);
	33	void packet_set_protocol_flags(u_int);
	34	u_int packet_get_protocol_flags(void);
	35	void packet_start_compression(int);
	36	void packet_set_interactive(int);
	37	int packet_is_interactive(void);
	38	void packet_set_server(void);
	39	void packet_set_authenticated(void);
	40	int packet_authentication_state(void);
	41
	42	void packet_start(u_char);
	43	void packet_put_char(int ch);
	44	void packet_put_int(u_int value);
	45	void packet_put_bignum(BIGNUM * value);
	46	void packet_put_bignum2(BIGNUM * value);
	47	void packet_put_string(const void *buf, u_int len);
	48	void packet_put_cstring(const char *str);
	49	void packet_put_raw(const void *buf, u_int len);
	50	int packet_send(void);
	51
	52	int packet_read(void);
	53	void packet_read_expect(int type);
	54	int packet_read_poll(void);
	55	void packet_process_incoming(const char *buf, u_int len);
	56	int packet_read_seqnr(u_int32_t *seqnr_p);
	57	int packet_read_poll_seqnr(u_int32_t *seqnr_p);
	58
	59	u_int packet_get_char(void);
	60	u_int packet_get_int(void);
	61	void packet_get_bignum(BIGNUM * value);
	62	void packet_get_bignum2(BIGNUM * value);
	63	void packet_get_raw(u_int length_ptr);
	64	void packet_get_string(u_int length_ptr);
	65	void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
	66	void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
	67
	68	void set_newkeys(int mode);
	69	int packet_get_keyiv_len(int);
	70	void packet_get_keyiv(int, u_char *, u_int);
	71	int packet_get_keycontext(int, u_char *);
	72	void packet_set_keycontext(int, u_char *);
	73	void packet_get_state(int, u_int32_t , u_int64_t , u_int32_t *);
	74	void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t);
	75	int packet_get_ssh1_cipher(void);
	76	void packet_set_iv(int, u_char *);
	77
	78	int packet_write_poll(void);
	79	int packet_write_wait(void);
	80	int packet_have_data_to_write(void);
	81	int packet_not_very_much_data_to_write(void);
	82
	83	int packet_connection_is_on_socket(void);
	84	int packet_connection_is_ipv4(void);
	85	int packet_remaining(void);
	86	void packet_send_ignore(int);
	87	void packet_add_padding(u_char);
	88
	89	void tty_make_modes(int, struct termios *);
	90	void tty_parse_modes(int, int *);
	91
	92	extern u_int max_packet_size;
	93	extern int keep_alive_timeouts;
	94	int packet_set_maxsize(u_int);
	95	#define packet_get_maxsize() max_packet_size
	96
	97	/* don't allow remaining bytes after the end of the message */
	98	#define packet_check_eom() \
	99	do { \
	100	int _len = packet_remaining(); \
	101	if (_len > 0) { \
	102	logit("Packet integrity error (%d bytes remaining) at %s:%d", \
	103	_len ,__FILE__, __LINE__); \
	104	packet_disconnect("Packet integrity error."); \
	105	} \
	106	} while (0)
	107
	108	int packet_need_rekeying(void);
	109	void packet_set_rekey_limit(u_int32_t);
	110
	111	#endif /* PACKET_H */