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Commit	Line	Data
	1	/* $OpenBSD: packet.h,v 1.49 2008/07/10 18:08:11 markus 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 packet_set_connection(int, int);
	24	void packet_set_timeout(int, int);
	25	void packet_set_nonblocking(void);
	26	int packet_get_connection_in(void);
	27	int packet_get_connection_out(void);
	28	void packet_close(void);
	29	void packet_set_encryption_key(const u_char *, u_int, int);
	30	u_int packet_get_encryption_key(u_char *);
	31	void packet_set_protocol_flags(u_int);
	32	u_int packet_get_protocol_flags(void);
	33	void packet_start_compression(int);
	34	void packet_set_interactive(int);
	35	int packet_is_interactive(void);
	36	void packet_set_server(void);
	37	void packet_set_authenticated(void);
	38
	39	void packet_start(u_char);
	40	void packet_put_char(int ch);
	41	void packet_put_int(u_int value);
	42	void packet_put_bignum(BIGNUM * value);
	43	void packet_put_bignum2(BIGNUM * value);
	44	void packet_put_string(const void *buf, u_int len);
	45	void packet_put_cstring(const char *str);
	46	void packet_put_raw(const void *buf, u_int len);
	47	void packet_send(void);
	48
	49	int packet_read(void);
	50	void packet_read_expect(int type);
	51	int packet_read_poll(void);
	52	void packet_process_incoming(const char *buf, u_int len);
	53	int packet_read_seqnr(u_int32_t *seqnr_p);
	54	int packet_read_poll_seqnr(u_int32_t *seqnr_p);
	55
	56	u_int packet_get_char(void);
	57	u_int packet_get_int(void);
	58	void packet_get_bignum(BIGNUM * value);
	59	void packet_get_bignum2(BIGNUM * value);
	60	void packet_get_raw(u_int length_ptr);
	61	void packet_get_string(u_int length_ptr);
	62	void packet_get_string_ptr(u_int length_ptr);
	63	void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
	64	void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
	65
	66	void set_newkeys(int mode);
	67	int packet_get_keyiv_len(int);
	68	void packet_get_keyiv(int, u_char *, u_int);
	69	int packet_get_keycontext(int, u_char *);
	70	void packet_set_keycontext(int, u_char *);
	71	void packet_get_state(int, u_int32_t , u_int64_t , u_int32_t , u_int64_t );
	72	void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t, u_int64_t);
	73	int packet_get_ssh1_cipher(void);
	74	void packet_set_iv(int, u_char *);
	75
	76	void packet_write_poll(void);
	77	void packet_write_wait(void);
	78	int packet_have_data_to_write(void);
	79	int packet_not_very_much_data_to_write(void);
	80
	81	int packet_connection_is_on_socket(void);
	82	int packet_connection_is_ipv4(void);
	83	int packet_remaining(void);
	84	void packet_send_ignore(int);
	85	void packet_add_padding(u_char);
	86
	87	void tty_make_modes(int, struct termios *);
	88	void tty_parse_modes(int, int *);
	89
	90	extern u_int max_packet_size;
	91	extern int keep_alive_timeouts;
	92	int packet_set_maxsize(u_int);
	93	#define packet_get_maxsize() max_packet_size
	94
	95	/* don't allow remaining bytes after the end of the message */
	96	#define packet_check_eom() \
	97	do { \
	98	int _len = packet_remaining(); \
	99	if (_len > 0) { \
	100	logit("Packet integrity error (%d bytes remaining) at %s:%d", \
	101	_len ,__FILE__, __LINE__); \
	102	packet_disconnect("Packet integrity error."); \
	103	} \
	104	} while (0)
	105
	106	int packet_need_rekeying(void);
	107	void packet_set_rekey_limit(u_int32_t);
	108
	109	#endif /* PACKET_H */