authfd.h

   1 /* $OpenBSD: authfd.h,v 1.35 2006/03/25 22:22:42 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 #include "buffer.h"
  20
  21 /* Messages for the authentication agent connection. */
  22 #define SSH_AGENTC_REQUEST_RSA_IDENTITIES       1
  23 #define SSH_AGENT_RSA_IDENTITIES_ANSWER         2
  24 #define SSH_AGENTC_RSA_CHALLENGE                3
  25 #define SSH_AGENT_RSA_RESPONSE                  4
  26 #define SSH_AGENT_FAILURE                       5
  27 #define SSH_AGENT_SUCCESS                       6
  28 #define SSH_AGENTC_ADD_RSA_IDENTITY             7
  29 #define SSH_AGENTC_REMOVE_RSA_IDENTITY          8
  30 #define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES    9
  31
  32 /* private OpenSSH extensions for SSH2 */
  33 #define SSH2_AGENTC_REQUEST_IDENTITIES          11
  34 #define SSH2_AGENT_IDENTITIES_ANSWER            12
  35 #define SSH2_AGENTC_SIGN_REQUEST                13
  36 #define SSH2_AGENT_SIGN_RESPONSE                14
  37 #define SSH2_AGENTC_ADD_IDENTITY                17
  38 #define SSH2_AGENTC_REMOVE_IDENTITY             18
  39 #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES       19
  40
  41 /* smartcard */
  42 #define SSH_AGENTC_ADD_SMARTCARD_KEY            20
  43 #define SSH_AGENTC_REMOVE_SMARTCARD_KEY         21
  44
  45 /* lock/unlock the agent */
  46 #define SSH_AGENTC_LOCK                         22
  47 #define SSH_AGENTC_UNLOCK                       23
  48
  49 /* add key with constraints */
  50 #define SSH_AGENTC_ADD_RSA_ID_CONSTRAINED       24
  51 #define SSH2_AGENTC_ADD_ID_CONSTRAINED          25
  52 #define SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED 26
  53
  54 #define SSH_AGENT_CONSTRAIN_LIFETIME            1
  55 #define SSH_AGENT_CONSTRAIN_CONFIRM             2
  56
  57 /* extended failure messages */
  58 #define SSH2_AGENT_FAILURE                      30
  59
  60 /* additional error code for ssh.com's ssh-agent2 */
  61 #define SSH_COM_AGENT2_FAILURE                  102
  62
  63 #define SSH_AGENT_OLD_SIGNATURE                 0x01
  64
  65 typedef struct {
  66         int     fd;
  67         Buffer  identities;
  68         int     howmany;
  69 }       AuthenticationConnection;
  70
  71 int     ssh_agent_present(void);
  72 int     ssh_get_authentication_socket(void);
  73 void    ssh_close_authentication_socket(int);
  74
  75 AuthenticationConnection *ssh_get_authentication_connection(void);
  76 void    ssh_close_authentication_connection(AuthenticationConnection *);
  77 int      ssh_get_num_identities(AuthenticationConnection *, int);
  78 Key     *ssh_get_first_identity(AuthenticationConnection *, char **, int);
  79 Key     *ssh_get_next_identity(AuthenticationConnection *, char **, int);
  80 int      ssh_add_identity(AuthenticationConnection *, Key *, const char *);
  81 int      ssh_add_identity_constrained(AuthenticationConnection *, Key *,
  82     const char *, u_int, u_int);
  83 int      ssh_remove_identity(AuthenticationConnection *, Key *);
  84 int      ssh_remove_all_identities(AuthenticationConnection *, int);
  85 int      ssh_lock_agent(AuthenticationConnection *, int, const char *);
  86 int      ssh_update_card(AuthenticationConnection *, int, const char *,
  87     const char *, u_int, u_int);
  88
  89 int
  90 ssh_decrypt_challenge(AuthenticationConnection *, Key *, BIGNUM *, u_char[16],
  91     u_int, u_char[16]);
  92
  93 int
  94 ssh_agent_sign(AuthenticationConnection *, Key *, u_char **, u_int *, u_char *,
  95     u_int);
  96
  97 #endif                          /* AUTHFD_H */