Greg Hartman | bd77cf7 | 2015-02-25 13:21:06 -0800 | [diff] [blame] | 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 | |
| 26 | void packet_set_connection(int, int); |
| 27 | void packet_set_timeout(int, int); |
| 28 | void packet_set_nonblocking(void); |
| 29 | int packet_get_connection_in(void); |
| 30 | int packet_get_connection_out(void); |
| 31 | void packet_close(void); |
| 32 | void packet_set_encryption_key(const u_char *, u_int, int); |
| 33 | u_int packet_get_encryption_key(u_char *); |
| 34 | void packet_set_protocol_flags(u_int); |
| 35 | u_int packet_get_protocol_flags(void); |
| 36 | void packet_start_compression(int); |
| 37 | void packet_set_interactive(int, int, int); |
| 38 | int packet_is_interactive(void); |
| 39 | void packet_set_server(void); |
| 40 | void packet_set_authenticated(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_int64(u_int64_t value); |
| 46 | void packet_put_bignum(BIGNUM * value); |
| 47 | void packet_put_bignum2(BIGNUM * value); |
| 48 | #ifdef OPENSSL_HAS_ECC |
| 49 | void packet_put_ecpoint(const EC_GROUP *, const EC_POINT *); |
| 50 | #endif |
| 51 | void packet_put_string(const void *buf, u_int len); |
| 52 | void packet_put_cstring(const char *str); |
| 53 | void packet_put_raw(const void *buf, u_int len); |
| 54 | void packet_send(void); |
| 55 | |
| 56 | int packet_read(void); |
| 57 | void packet_read_expect(int type); |
| 58 | int packet_read_poll(void); |
| 59 | void packet_process_incoming(const char *buf, u_int len); |
| 60 | int packet_read_seqnr(u_int32_t *seqnr_p); |
| 61 | int packet_read_poll_seqnr(u_int32_t *seqnr_p); |
| 62 | |
| 63 | u_int packet_get_char(void); |
| 64 | u_int packet_get_int(void); |
| 65 | u_int64_t packet_get_int64(void); |
| 66 | void packet_get_bignum(BIGNUM * value); |
| 67 | void packet_get_bignum2(BIGNUM * value); |
| 68 | #ifdef OPENSSL_HAS_ECC |
| 69 | void packet_get_ecpoint(const EC_GROUP *, EC_POINT *); |
| 70 | #endif |
| 71 | void *packet_get_raw(u_int *length_ptr); |
| 72 | void *packet_get_string(u_int *length_ptr); |
| 73 | char *packet_get_cstring(u_int *length_ptr); |
| 74 | void *packet_get_string_ptr(u_int *length_ptr); |
| 75 | void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); |
| 76 | void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); |
| 77 | |
| 78 | void set_newkeys(int mode); |
| 79 | int packet_get_keyiv_len(int); |
| 80 | void packet_get_keyiv(int, u_char *, u_int); |
| 81 | int packet_get_keycontext(int, u_char *); |
| 82 | void packet_set_keycontext(int, u_char *); |
| 83 | void packet_get_state(int, u_int32_t *, u_int64_t *, u_int32_t *, u_int64_t *); |
| 84 | void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t, u_int64_t); |
| 85 | int packet_get_ssh1_cipher(void); |
| 86 | void packet_set_iv(int, u_char *); |
| 87 | void *packet_get_newkeys(int); |
| 88 | |
| 89 | void packet_write_poll(void); |
| 90 | void packet_write_wait(void); |
| 91 | int packet_have_data_to_write(void); |
| 92 | int packet_not_very_much_data_to_write(void); |
| 93 | |
| 94 | int packet_connection_is_on_socket(void); |
| 95 | int packet_remaining(void); |
| 96 | void packet_send_ignore(int); |
| 97 | void packet_add_padding(u_char); |
| 98 | |
| 99 | void tty_make_modes(int, struct termios *); |
| 100 | void tty_parse_modes(int, int *); |
| 101 | |
| 102 | void packet_set_alive_timeouts(int); |
| 103 | int packet_inc_alive_timeouts(void); |
| 104 | int packet_set_maxsize(u_int); |
| 105 | u_int packet_get_maxsize(void); |
| 106 | |
| 107 | /* don't allow remaining bytes after the end of the message */ |
| 108 | #define packet_check_eom() \ |
| 109 | do { \ |
| 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 | |
| 118 | int packet_need_rekeying(void); |
| 119 | void packet_set_rekey_limit(u_int32_t); |
| 120 | |
| 121 | void packet_backup_state(void); |
| 122 | void packet_restore_state(void); |
| 123 | |
| 124 | void *packet_get_input(void); |
| 125 | void *packet_get_output(void); |
| 126 | |
| 127 | #endif /* PACKET_H */ |