packet.h revision 92559
1/* $OpenBSD: packet.h,v 1.33 2002/03/04 17:27:39 stevesk Exp $ */ 2/* $FreeBSD: head/crypto/openssh/packet.h 92559 2002-03-18 10:09:43Z des $ */ 3 4/* 5 * Author: Tatu Ylonen <ylo@cs.hut.fi> 6 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 7 * All rights reserved 8 * Interface for the packet protocol functions. 9 * 10 * As far as I am concerned, the code I have written for this software 11 * can be used freely for any purpose. Any derived versions of this 12 * software must be clearly marked as such, and if the derived work is 13 * incompatible with the protocol description in the RFC file, it must be 14 * called by a name other than "ssh" or "Secure Shell". 15 */ 16 17#ifndef PACKET_H 18#define PACKET_H 19 20#include <openssl/bn.h> 21 22void packet_set_connection(int, int); 23void packet_set_nonblocking(void); 24int packet_get_connection_in(void); 25int packet_get_connection_out(void); 26void packet_close(void); 27void packet_set_encryption_key(const u_char *, u_int, int); 28void packet_set_protocol_flags(u_int); 29u_int packet_get_protocol_flags(void); 30void packet_start_compression(int); 31void packet_set_interactive(int); 32int packet_is_interactive(void); 33 34void packet_start(u_char); 35void packet_put_char(int ch); 36void packet_put_int(u_int value); 37void packet_put_bignum(BIGNUM * value); 38void packet_put_bignum2(BIGNUM * value); 39void packet_put_string(const void *buf, u_int len); 40void packet_put_cstring(const char *str); 41void packet_put_raw(const void *buf, u_int len); 42void packet_send(void); 43 44int packet_read(void); 45void packet_read_expect(int type); 46int packet_read_poll(void); 47void packet_process_incoming(const char *buf, u_int len); 48int packet_read_seqnr(u_int32_t *seqnr_p); 49int packet_read_poll_seqnr(u_int32_t *seqnr_p); 50 51u_int packet_get_char(void); 52u_int packet_get_int(void); 53void packet_get_bignum(BIGNUM * value); 54void packet_get_bignum2(BIGNUM * value); 55void *packet_get_raw(int *length_ptr); 56void *packet_get_string(u_int *length_ptr); 57void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); 58void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); 59 60void packet_write_poll(void); 61void packet_write_wait(void); 62int packet_have_data_to_write(void); 63int packet_not_very_much_data_to_write(void); 64 65int packet_connection_is_on_socket(void); 66int packet_connection_is_ipv4(void); 67int packet_remaining(void); 68void packet_send_ignore(int); 69void packet_add_padding(u_char); 70 71void tty_make_modes(int, struct termios *); 72void tty_parse_modes(int, int *); 73 74extern int max_packet_size; 75int packet_set_maxsize(int); 76#define packet_get_maxsize() max_packet_size 77 78/* don't allow remaining bytes after the end of the message */ 79#define packet_check_eom() \ 80do { \ 81 int _len = packet_remaining(); \ 82 if (_len > 0) { \ 83 log("Packet integrity error (%d bytes remaining) at %s:%d", \ 84 _len ,__FILE__, __LINE__); \ 85 packet_disconnect("Packet integrity error."); \ 86 } \ 87} while (0) 88 89#endif /* PACKET_H */ 90