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Commit	Line	Data
	1	/*
	2	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	3	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	4	* All rights reserved
	5	* Interface for the packet protocol functions.
	6	*
	7	* As far as I am concerned, the code I have written for this software
	8	* can be used freely for any purpose. Any derived versions of this
	9	* software must be clearly marked as such, and if the derived work is
	10	* incompatible with the protocol description in the RFC file, it must be
	11	* called by a name other than "ssh" or "Secure Shell".
	12	*/
	13
	14	/* RCSID("$OpenBSD: packet.h,v 1.30 2001/12/28 12:14:27 markus Exp $"); */
	15
	16	#ifndef PACKET_H
	17	#define PACKET_H
	18
	19	#include <openssl/bn.h>
	20
	21	void packet_set_connection(int, int);
	22	void packet_set_nonblocking(void);
	23	int packet_get_connection_in(void);
	24	int packet_get_connection_out(void);
	25	void packet_close(void);
	26	void packet_set_encryption_key(const u_char *, u_int, int);
	27	void packet_set_protocol_flags(u_int);
	28	u_int packet_get_protocol_flags(void);
	29	void packet_start_compression(int);
	30	void packet_set_interactive(int);
	31	int packet_is_interactive(void);
	32
	33	void packet_start(u_char);
	34	void packet_put_char(int ch);
	35	void packet_put_int(u_int value);
	36	void packet_put_bignum(BIGNUM * value);
	37	void packet_put_bignum2(BIGNUM * value);
	38	void packet_put_string(const void *buf, u_int len);
	39	void packet_put_cstring(const char *str);
	40	void packet_put_raw(const void *buf, u_int len);
	41	void packet_send(void);
	42
	43	int packet_read(int *payload_len_ptr);
	44	void packet_read_expect(int *payload_len_ptr, int type);
	45	int packet_read_poll(int *packet_len_ptr);
	46	void packet_process_incoming(const char *buf, u_int len);
	47	int packet_read_seqnr(int payload_len_ptr, u_int32_t seqnr_p);
	48	int packet_read_poll_seqnr(int packet_len_ptr, u_int32_t seqnr_p);
	49
	50	u_int packet_get_char(void);
	51	u_int packet_get_int(void);
	52	void packet_get_bignum(BIGNUM * value, int *length_ptr);
	53	void packet_get_bignum2(BIGNUM * value, int *length_ptr);
	54	void packet_get_raw(int length_ptr);
	55	void packet_get_string(u_int length_ptr);
	56	void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
	57	void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
	58
	59	void packet_write_poll(void);
	60	void packet_write_wait(void);
	61	int packet_have_data_to_write(void);
	62	int packet_not_very_much_data_to_write(void);
	63
	64	int packet_connection_is_on_socket(void);
	65	int packet_connection_is_ipv4(void);
	66	int packet_remaining(void);
	67	void packet_send_ignore(int);
	68	void packet_add_padding(u_char);
	69
	70	void tty_make_modes(int, struct termios *);
	71	void tty_parse_modes(int, int *);
	72
	73	extern int max_packet_size;
	74	int packet_set_maxsize(int);
	75	#define packet_get_maxsize() max_packet_size
	76
	77	/* don't allow remaining bytes after the end of the message */
	78	#define packet_check_eom() \
	79	do { \
	80	int _len = packet_remaining(); \
	81	if (_len > 0) { \
	82	log("Packet integrity error (%d bytes remaining) at %s:%d", \
	83	_len ,__FILE__, __LINE__); \
	84	packet_disconnect("Packet integrity error."); \
	85	} \
	86	} while (0)
	87
	88	#endif /* PACKET_H */