1/* $OpenBSD: packet.h,v 1.56 2011/05/06 21:14:05 djm 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#ifdef OPENSSL_HAS_ECC 23#include <openssl/ec.h> 24#endif 25 26void packet_set_connection(int, int); 27void packet_set_timeout(int, int); 28void packet_set_nonblocking(void); 29int packet_get_connection_in(void); 30int packet_get_connection_out(void); 31void packet_close(void); 32void packet_set_encryption_key(const u_char *, u_int, int); 33u_int packet_get_encryption_key(u_char *); 34void packet_set_protocol_flags(u_int); 35u_int packet_get_protocol_flags(void); 36void packet_start_compression(int); 37void packet_set_interactive(int, int, int); 38int packet_is_interactive(void); 39void packet_set_server(void); 40void packet_set_authenticated(void); 41 42void packet_start(u_char); 43void packet_put_char(int ch); 44void packet_put_int(u_int value); 45void packet_put_int64(u_int64_t value); 46void packet_put_bignum(BIGNUM * value); 47void packet_put_bignum2(BIGNUM * value); 48#ifdef OPENSSL_HAS_ECC 49void packet_put_ecpoint(const EC_GROUP *, const EC_POINT *); 50#endif 51void packet_put_string(const void *buf, u_int len); 52void packet_put_cstring(const char *str); 53void packet_put_raw(const void *buf, u_int len); 54void packet_send(void); 55 56int packet_read(void); 57void packet_read_expect(int type); 58int packet_read_poll(void); 59void packet_process_incoming(const char *buf, u_int len); 60int packet_read_seqnr(u_int32_t *seqnr_p); 61int packet_read_poll_seqnr(u_int32_t *seqnr_p); 62 63u_int packet_get_char(void); 64u_int packet_get_int(void); 65u_int64_t packet_get_int64(void); 66void packet_get_bignum(BIGNUM * value); 67void packet_get_bignum2(BIGNUM * value); 68#ifdef OPENSSL_HAS_ECC 69void packet_get_ecpoint(const EC_GROUP *, EC_POINT *); 70#endif 71void *packet_get_raw(u_int *length_ptr); 72void *packet_get_string(u_int *length_ptr); 73char *packet_get_cstring(u_int *length_ptr); 74void *packet_get_string_ptr(u_int *length_ptr); 75void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); 76void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); 77 78void set_newkeys(int mode); 79int packet_get_keyiv_len(int); 80void packet_get_keyiv(int, u_char *, u_int); 81int packet_get_keycontext(int, u_char *); 82void packet_set_keycontext(int, u_char *); 83void packet_get_state(int, u_int32_t *, u_int64_t *, u_int32_t *, u_int64_t *); 84void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t, u_int64_t); 85int packet_get_ssh1_cipher(void); 86void packet_set_iv(int, u_char *); 87void *packet_get_newkeys(int); 88 89void packet_write_poll(void); 90void packet_write_wait(void); 91int packet_have_data_to_write(void); 92int packet_not_very_much_data_to_write(void); 93 94int packet_connection_is_on_socket(void); 95int packet_remaining(void); 96void packet_send_ignore(int); 97void packet_add_padding(u_char); 98 99void tty_make_modes(int, struct termios *); 100void tty_parse_modes(int, int *); 101 102void packet_set_alive_timeouts(int); 103int packet_inc_alive_timeouts(void); 104int packet_set_maxsize(u_int); 105u_int packet_get_maxsize(void); 106 107/* don't allow remaining bytes after the end of the message */ 108#define packet_check_eom() \ 109do { \ 110 int _len = packet_remaining(); \ 111 if (_len > 0) { \ 112 logit("Packet integrity error (%d bytes remaining) at %s:%d", \ 113 _len ,__FILE__, __LINE__); \ 114 packet_disconnect("Packet integrity error."); \ 115 } \ 116} while (0) 117 118int packet_need_rekeying(void); 119void packet_set_rekey_limit(u_int32_t); 120 121void packet_backup_state(void); 122void packet_restore_state(void); 123 124void *packet_get_input(void); 125void *packet_get_output(void); 126 127#endif /* PACKET_H */ 128