1 /* $OpenBSD: packet.h,v 1.56 2011/05/06 21:14:05 djm Exp $ */
4 * Author: Tatu Ylonen <ylo@cs.hut.fi>
5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7 * Interface for the packet protocol functions.
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".
21 #include <openssl/bn.h>
22 #ifdef OPENSSL_HAS_ECC
23 #include <openssl/ec.h>
27 packet_request_rekeying(void);
29 void packet_set_connection(int, int);
30 void packet_set_timeout(int, int);
31 void packet_set_nonblocking(void);
32 int packet_get_connection_in(void);
33 int packet_get_connection_out(void);
34 void packet_close(void);
35 void packet_set_encryption_key(const u_char *, u_int, int);
36 u_int packet_get_encryption_key(u_char *);
37 void packet_set_protocol_flags(u_int);
38 u_int packet_get_protocol_flags(void);
39 void packet_start_compression(int);
40 void packet_set_interactive(int, int, int);
41 int packet_is_interactive(void);
42 void packet_set_server(void);
43 void packet_set_authenticated(void);
44 int packet_authentication_state(void);
46 void packet_start(u_char);
47 void packet_put_char(int ch);
48 void packet_put_int(u_int value);
49 void packet_put_int64(u_int64_t value);
50 void packet_put_bignum(BIGNUM * value);
51 void packet_put_bignum2(BIGNUM * value);
52 #ifdef OPENSSL_HAS_ECC
53 void packet_put_ecpoint(const EC_GROUP *, const EC_POINT *);
55 void packet_put_string(const void *buf, u_int len);
56 void packet_put_cstring(const char *str);
57 void packet_put_raw(const void *buf, u_int len);
58 int packet_send(void);
60 int packet_read(void);
61 void packet_read_expect(int type);
62 int packet_read_poll(void);
63 void packet_process_incoming(const char *buf, u_int len);
64 int packet_read_seqnr(u_int32_t *seqnr_p);
65 int packet_read_poll_seqnr(u_int32_t *seqnr_p);
67 u_int packet_get_char(void);
68 u_int packet_get_int(void);
69 u_int64_t packet_get_int64(void);
70 void packet_get_bignum(BIGNUM * value);
71 void packet_get_bignum2(BIGNUM * value);
72 #ifdef OPENSSL_HAS_ECC
73 void packet_get_ecpoint(const EC_GROUP *, EC_POINT *);
75 void *packet_get_raw(u_int *length_ptr);
76 void *packet_get_string(u_int *length_ptr);
77 char *packet_get_cstring(u_int *length_ptr);
78 void *packet_get_string_ptr(u_int *length_ptr);
79 void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
80 void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
82 void set_newkeys(int mode);
83 int packet_get_keyiv_len(int);
84 void packet_get_keyiv(int, u_char *, u_int);
85 int packet_get_keycontext(int, u_char *);
86 void packet_set_keycontext(int, u_char *);
87 void packet_get_state(int, u_int32_t *, u_int64_t *, u_int32_t *, u_int64_t *);
88 void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t, u_int64_t);
89 int packet_get_ssh1_cipher(void);
90 void packet_set_iv(int, u_char *);
91 void *packet_get_newkeys(int);
93 int packet_write_poll(void);
94 void packet_write_wait(void);
95 int packet_have_data_to_write(void);
96 int packet_not_very_much_data_to_write(void);
98 int packet_connection_is_on_socket(void);
99 int packet_remaining(void);
100 void packet_send_ignore(int);
101 void packet_add_padding(u_char);
103 void tty_make_modes(int, struct termios *);
104 void tty_parse_modes(int, int *);
106 void packet_set_alive_timeouts(int);
107 int packet_inc_alive_timeouts(void);
108 int packet_set_maxsize(u_int);
109 u_int packet_get_maxsize(void);
111 /* don't allow remaining bytes after the end of the message */
112 #define packet_check_eom() \
114 int _len = packet_remaining(); \
116 logit("Packet integrity error (%d bytes remaining) at %s:%d", \
117 _len ,__FILE__, __LINE__); \
118 packet_disconnect("Packet integrity error."); \
122 int packet_need_rekeying(void);
123 void packet_set_rekey_limit(u_int32_t);
125 void packet_backup_state(void);
126 void packet_restore_state(void);
128 void *packet_get_input(void);
129 void *packet_get_output(void);
131 #endif /* PACKET_H */