1/* $OpenBSD: authfd.h,v 1.37 2009/08/27 17:44:52 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 * Functions to interface with the SSH_AUTHENTICATION_FD socket.
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 AUTHFD_H
17#define AUTHFD_H
18
19/* Messages for the authentication agent connection. */
20#define SSH_AGENTC_REQUEST_RSA_IDENTITIES	1
21#define SSH_AGENT_RSA_IDENTITIES_ANSWER		2
22#define SSH_AGENTC_RSA_CHALLENGE		3
23#define SSH_AGENT_RSA_RESPONSE			4
24#define SSH_AGENT_FAILURE			5
25#define SSH_AGENT_SUCCESS			6
26#define SSH_AGENTC_ADD_RSA_IDENTITY		7
27#define SSH_AGENTC_REMOVE_RSA_IDENTITY		8
28#define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES	9
29
30/* private OpenSSH extensions for SSH2 */
31#define SSH2_AGENTC_REQUEST_IDENTITIES		11
32#define SSH2_AGENT_IDENTITIES_ANSWER		12
33#define SSH2_AGENTC_SIGN_REQUEST		13
34#define SSH2_AGENT_SIGN_RESPONSE		14
35#define SSH2_AGENTC_ADD_IDENTITY		17
36#define SSH2_AGENTC_REMOVE_IDENTITY		18
37#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES	19
38
39/* smartcard */
40#define SSH_AGENTC_ADD_SMARTCARD_KEY		20
41#define SSH_AGENTC_REMOVE_SMARTCARD_KEY		21
42
43/* lock/unlock the agent */
44#define SSH_AGENTC_LOCK				22
45#define SSH_AGENTC_UNLOCK			23
46
47/* add key with constraints */
48#define SSH_AGENTC_ADD_RSA_ID_CONSTRAINED	24
49#define SSH2_AGENTC_ADD_ID_CONSTRAINED		25
50#define SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED 26
51
52#define	SSH_AGENT_CONSTRAIN_LIFETIME		1
53#define	SSH_AGENT_CONSTRAIN_CONFIRM		2
54
55/* extended failure messages */
56#define SSH2_AGENT_FAILURE			30
57
58/* additional error code for ssh.com's ssh-agent2 */
59#define SSH_COM_AGENT2_FAILURE			102
60
61#define	SSH_AGENT_OLD_SIGNATURE			0x01
62
63typedef struct {
64	int	fd;
65	Buffer	identities;
66	int	howmany;
67}	AuthenticationConnection;
68
69int	ssh_agent_present(void);
70int	ssh_get_authentication_socket(void);
71void	ssh_close_authentication_socket(int);
72
73AuthenticationConnection *ssh_get_authentication_connection(void);
74void	ssh_close_authentication_connection(AuthenticationConnection *);
75int	 ssh_get_num_identities(AuthenticationConnection *, int);
76Key	*ssh_get_first_identity(AuthenticationConnection *, char **, int);
77Key	*ssh_get_next_identity(AuthenticationConnection *, char **, int);
78int	 ssh_add_identity_constrained(AuthenticationConnection *, Key *,
79    const char *, u_int, u_int);
80int	 ssh_remove_identity(AuthenticationConnection *, Key *);
81int	 ssh_remove_all_identities(AuthenticationConnection *, int);
82int	 ssh_lock_agent(AuthenticationConnection *, int, const char *);
83int	 ssh_update_card(AuthenticationConnection *, int, const char *,
84    const char *, u_int, u_int);
85
86int
87ssh_decrypt_challenge(AuthenticationConnection *, Key *, BIGNUM *, u_char[16],
88    u_int, u_char[16]);
89
90int
91ssh_agent_sign(AuthenticationConnection *, Key *, u_char **, u_int *, u_char *,
92    u_int);
93
94#endif				/* AUTHFD_H */
95