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1 | /* $OpenBSD: packet.h,v 1.43 2005/07/25 11:59:40 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 <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 | u_int packet_get_encryption_key(u_char *); | |
28 | void packet_set_protocol_flags(u_int); | |
29 | u_int packet_get_protocol_flags(void); | |
30 | void packet_start_compression(int); | |
31 | void packet_set_interactive(int); | |
32 | int packet_is_interactive(void); | |
33 | void packet_set_server(void); | |
34 | void packet_set_authenticated(void); | |
35 | ||
36 | void packet_start(u_char); | |
37 | void packet_put_char(int ch); | |
38 | void packet_put_int(u_int value); | |
39 | void packet_put_bignum(BIGNUM * value); | |
40 | void packet_put_bignum2(BIGNUM * value); | |
41 | void packet_put_string(const void *buf, u_int len); | |
42 | void packet_put_cstring(const char *str); | |
43 | void packet_put_raw(const void *buf, u_int len); | |
44 | void packet_send(void); | |
45 | ||
46 | int packet_read(void); | |
47 | void packet_read_expect(int type); | |
48 | int packet_read_poll(void); | |
49 | void packet_process_incoming(const char *buf, u_int len); | |
50 | int packet_read_seqnr(u_int32_t *seqnr_p); | |
51 | int packet_read_poll_seqnr(u_int32_t *seqnr_p); | |
52 | ||
53 | u_int packet_get_char(void); | |
54 | u_int packet_get_int(void); | |
55 | void packet_get_bignum(BIGNUM * value); | |
56 | void packet_get_bignum2(BIGNUM * value); | |
57 | void *packet_get_raw(u_int *length_ptr); | |
58 | void *packet_get_string(u_int *length_ptr); | |
59 | void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); | |
60 | void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); | |
61 | ||
62 | void set_newkeys(int mode); | |
63 | int packet_get_keyiv_len(int); | |
64 | void packet_get_keyiv(int, u_char *, u_int); | |
65 | int packet_get_keycontext(int, u_char *); | |
66 | void packet_set_keycontext(int, u_char *); | |
67 | void packet_get_state(int, u_int32_t *, u_int64_t *, u_int32_t *); | |
68 | void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t); | |
69 | int packet_get_ssh1_cipher(void); | |
70 | void packet_set_iv(int, u_char *); | |
71 | ||
72 | void packet_write_poll(void); | |
73 | void packet_write_wait(void); | |
74 | int packet_have_data_to_write(void); | |
75 | int packet_not_very_much_data_to_write(void); | |
76 | ||
77 | int packet_connection_is_on_socket(void); | |
78 | int packet_connection_is_ipv4(void); | |
79 | int packet_remaining(void); | |
80 | void packet_send_ignore(int); | |
81 | void packet_add_padding(u_char); | |
82 | ||
83 | void tty_make_modes(int, struct termios *); | |
84 | void tty_parse_modes(int, int *); | |
85 | ||
86 | extern u_int max_packet_size; | |
87 | int packet_set_maxsize(u_int); | |
88 | #define packet_get_maxsize() max_packet_size | |
89 | ||
90 | /* don't allow remaining bytes after the end of the message */ | |
91 | #define packet_check_eom() \ | |
92 | do { \ | |
93 | int _len = packet_remaining(); \ | |
94 | if (_len > 0) { \ | |
95 | logit("Packet integrity error (%d bytes remaining) at %s:%d", \ | |
96 | _len ,__FILE__, __LINE__); \ | |
97 | packet_disconnect("Packet integrity error."); \ | |
98 | } \ | |
99 | } while (0) | |
100 | ||
101 | int packet_need_rekeying(void); | |
102 | void packet_set_rekey_limit(u_int32_t); | |
103 | ||
104 | #endif /* PACKET_H */ |