Annotation of src/usr.bin/ssh/packet.h, Revision 1.73
1.73 ! markus 1: /* $OpenBSD: packet.h,v 1.72 2016/09/28 16:33:07 djm Exp $ */
1.33 stevesk 2:
1.1 deraadt 3: /*
1.5 deraadt 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.
1.15 markus 8: *
1.17 deraadt 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".
1.5 deraadt 14: */
1.1 deraadt 15:
16: #ifndef PACKET_H
17: #define PACKET_H
1.44 stevesk 18:
19: #include <termios.h>
1.1 deraadt 20:
1.13 markus 21: #include <openssl/bn.h>
1.54 djm 22: #include <openssl/ec.h>
1.62 markus 23: #include <sys/signal.h>
24: #include <sys/queue.h>
1.1 deraadt 25:
1.62 markus 26: struct kex;
27: struct sshkey;
28: struct sshbuf;
29: struct session_state; /* private session data */
30:
1.63 markus 31: #include "dispatch.h" /* typedef, DISPATCH_MAX */
32:
1.64 markus 33: struct key_entry {
34: TAILQ_ENTRY(key_entry) next;
35: struct sshkey *key;
36: };
37:
1.62 markus 38: struct ssh {
39: /* Session state */
40: struct session_state *state;
41:
42: /* Key exchange */
43: struct kex *kex;
44:
1.71 djm 45: /* cached local and remote ip addresses and ports */
1.62 markus 46: char *remote_ipaddr;
47: int remote_port;
1.71 djm 48: char *local_ipaddr;
49: int local_port;
1.63 markus 50:
51: /* Dispatcher table */
52: dispatch_fn *dispatch[DISPATCH_MAX];
53: /* number of packets to ignore in the dispatcher */
54: int dispatch_skip_packets;
1.62 markus 55:
56: /* datafellows */
57: int compat;
1.64 markus 58:
59: /* Lists for private and public keys */
60: TAILQ_HEAD(, key_entry) private_keys;
61: TAILQ_HEAD(, key_entry) public_keys;
62:
63: /* APP data */
64: void *app_data;
1.62 markus 65: };
66:
67: struct ssh *ssh_alloc_session_state(void);
68: struct ssh *ssh_packet_set_connection(struct ssh *, int, int);
69: void ssh_packet_set_timeout(struct ssh *, int, int);
70: int ssh_packet_stop_discard(struct ssh *);
71: int ssh_packet_connection_af(struct ssh *);
72: void ssh_packet_set_nonblocking(struct ssh *);
73: int ssh_packet_get_connection_in(struct ssh *);
74: int ssh_packet_get_connection_out(struct ssh *);
75: void ssh_packet_close(struct ssh *);
76: void ssh_packet_set_encryption_key(struct ssh *, const u_char *, u_int, int);
1.70 djm 77: int ssh_packet_is_rekeying(struct ssh *);
1.62 markus 78: void ssh_packet_set_protocol_flags(struct ssh *, u_int);
79: u_int ssh_packet_get_protocol_flags(struct ssh *);
80: int ssh_packet_start_compression(struct ssh *, int);
81: void ssh_packet_set_tos(struct ssh *, int);
82: void ssh_packet_set_interactive(struct ssh *, int, int, int);
83: int ssh_packet_is_interactive(struct ssh *);
84: void ssh_packet_set_server(struct ssh *);
85: void ssh_packet_set_authenticated(struct ssh *);
1.73 ! markus 86: void ssh_packet_set_mux(struct ssh *);
! 87: int ssh_packet_get_mux(struct ssh *);
! 88:
! 89: int ssh_packet_log_type(u_char);
1.62 markus 90:
91: int ssh_packet_send1(struct ssh *);
92: int ssh_packet_send2_wrapped(struct ssh *);
93: int ssh_packet_send2(struct ssh *);
94:
95: int ssh_packet_read(struct ssh *);
1.66 djm 96: int ssh_packet_read_expect(struct ssh *, u_int type);
1.62 markus 97: int ssh_packet_read_poll(struct ssh *);
98: int ssh_packet_read_poll1(struct ssh *, u_char *);
99: int ssh_packet_read_poll2(struct ssh *, u_char *, u_int32_t *seqnr_p);
1.65 djm 100: int ssh_packet_process_incoming(struct ssh *, const char *buf, u_int len);
1.62 markus 101: int ssh_packet_read_seqnr(struct ssh *, u_char *, u_int32_t *seqnr_p);
102: int ssh_packet_read_poll_seqnr(struct ssh *, u_char *, u_int32_t *seqnr_p);
103:
104: const void *ssh_packet_get_string_ptr(struct ssh *, u_int *length_ptr);
105: void ssh_packet_disconnect(struct ssh *, const char *fmt, ...)
106: __attribute__((format(printf, 2, 3)))
107: __attribute__((noreturn));
108: void ssh_packet_send_debug(struct ssh *, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
109:
110: int ssh_set_newkeys(struct ssh *, int mode);
111: void ssh_packet_get_bytes(struct ssh *, u_int64_t *, u_int64_t *);
112:
1.66 djm 113: int ssh_packet_write_poll(struct ssh *);
114: int ssh_packet_write_wait(struct ssh *);
1.62 markus 115: int ssh_packet_have_data_to_write(struct ssh *);
116: int ssh_packet_not_very_much_data_to_write(struct ssh *);
117:
118: int ssh_packet_connection_is_on_socket(struct ssh *);
119: int ssh_packet_remaining(struct ssh *);
120: void ssh_packet_send_ignore(struct ssh *, int);
1.1 deraadt 121:
1.25 markus 122: void tty_make_modes(int, struct termios *);
123: void tty_parse_modes(int, int *);
1.1 deraadt 124:
1.62 markus 125: void ssh_packet_set_alive_timeouts(struct ssh *, int);
126: int ssh_packet_inc_alive_timeouts(struct ssh *);
127: int ssh_packet_set_maxsize(struct ssh *, u_int);
128: u_int ssh_packet_get_maxsize(struct ssh *);
129:
130: int ssh_packet_get_state(struct ssh *, struct sshbuf *);
131: int ssh_packet_set_state(struct ssh *, struct sshbuf *);
132:
133: const char *ssh_remote_ipaddr(struct ssh *);
1.67 djm 134: int ssh_remote_port(struct ssh *);
1.71 djm 135: const char *ssh_local_ipaddr(struct ssh *);
136: int ssh_local_port(struct ssh *);
1.62 markus 137:
1.69 dtucker 138: void ssh_packet_set_rekey_limits(struct ssh *, u_int64_t, time_t);
1.62 markus 139: time_t ssh_packet_get_rekey_timeout(struct ssh *);
140:
141: void *ssh_packet_get_input(struct ssh *);
142: void *ssh_packet_get_output(struct ssh *);
143:
144: /* new API */
145: int sshpkt_start(struct ssh *ssh, u_char type);
146: int sshpkt_send(struct ssh *ssh);
1.66 djm 147: int sshpkt_disconnect(struct ssh *, const char *fmt, ...)
148: __attribute__((format(printf, 2, 3)));
1.62 markus 149: int sshpkt_add_padding(struct ssh *, u_char);
1.66 djm 150: void sshpkt_fatal(struct ssh *ssh, const char *tag, int r);
1.62 markus 151:
152: int sshpkt_put(struct ssh *ssh, const void *v, size_t len);
153: int sshpkt_putb(struct ssh *ssh, const struct sshbuf *b);
154: int sshpkt_put_u8(struct ssh *ssh, u_char val);
155: int sshpkt_put_u32(struct ssh *ssh, u_int32_t val);
156: int sshpkt_put_u64(struct ssh *ssh, u_int64_t val);
157: int sshpkt_put_string(struct ssh *ssh, const void *v, size_t len);
158: int sshpkt_put_cstring(struct ssh *ssh, const void *v);
159: int sshpkt_put_stringb(struct ssh *ssh, const struct sshbuf *v);
160: int sshpkt_put_ec(struct ssh *ssh, const EC_POINT *v, const EC_GROUP *g);
161: int sshpkt_put_bignum1(struct ssh *ssh, const BIGNUM *v);
162: int sshpkt_put_bignum2(struct ssh *ssh, const BIGNUM *v);
163:
164: int sshpkt_get(struct ssh *ssh, void *valp, size_t len);
165: int sshpkt_get_u8(struct ssh *ssh, u_char *valp);
166: int sshpkt_get_u32(struct ssh *ssh, u_int32_t *valp);
167: int sshpkt_get_u64(struct ssh *ssh, u_int64_t *valp);
168: int sshpkt_get_string(struct ssh *ssh, u_char **valp, size_t *lenp);
169: int sshpkt_get_string_direct(struct ssh *ssh, const u_char **valp, size_t *lenp);
170: int sshpkt_get_cstring(struct ssh *ssh, char **valp, size_t *lenp);
171: int sshpkt_get_ec(struct ssh *ssh, EC_POINT *v, const EC_GROUP *g);
172: int sshpkt_get_bignum1(struct ssh *ssh, BIGNUM *v);
173: int sshpkt_get_bignum2(struct ssh *ssh, BIGNUM *v);
174: int sshpkt_get_end(struct ssh *ssh);
175: const u_char *sshpkt_ptr(struct ssh *, size_t *lenp);
176:
177: /* OLD API */
178: extern struct ssh *active_state;
179: #include "opacket.h"
1.1 deraadt 180:
1.5 deraadt 181: #endif /* PACKET_H */
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