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893d73549d
[authfd.c ssh-add.c authfd.h]
Do not fall back to adding keys without contraints (ssh-add -c / -t ...)
when the agent refuses the constrained add request. This was a useful
migration measure back in 2002 when constraints were new, but just
adds risk now.
bz #1612, report and patch from dkg AT fifthhorseman.net; ok markus@
95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/* $OpenBSD: authfd.h,v 1.37 2009/08/27 17:44:52 djm Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Functions to interface with the SSH_AUTHENTICATION_FD socket.
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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*/
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#ifndef AUTHFD_H
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#define AUTHFD_H
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/* Messages for the authentication agent connection. */
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#define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1
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#define SSH_AGENT_RSA_IDENTITIES_ANSWER 2
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#define SSH_AGENTC_RSA_CHALLENGE 3
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#define SSH_AGENT_RSA_RESPONSE 4
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#define SSH_AGENT_FAILURE 5
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#define SSH_AGENT_SUCCESS 6
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#define SSH_AGENTC_ADD_RSA_IDENTITY 7
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#define SSH_AGENTC_REMOVE_RSA_IDENTITY 8
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#define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9
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/* private OpenSSH extensions for SSH2 */
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#define SSH2_AGENTC_REQUEST_IDENTITIES 11
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#define SSH2_AGENT_IDENTITIES_ANSWER 12
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#define SSH2_AGENTC_SIGN_REQUEST 13
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#define SSH2_AGENT_SIGN_RESPONSE 14
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#define SSH2_AGENTC_ADD_IDENTITY 17
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#define SSH2_AGENTC_REMOVE_IDENTITY 18
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#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
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/* smartcard */
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#define SSH_AGENTC_ADD_SMARTCARD_KEY 20
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#define SSH_AGENTC_REMOVE_SMARTCARD_KEY 21
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/* lock/unlock the agent */
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#define SSH_AGENTC_LOCK 22
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#define SSH_AGENTC_UNLOCK 23
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/* add key with constraints */
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#define SSH_AGENTC_ADD_RSA_ID_CONSTRAINED 24
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#define SSH2_AGENTC_ADD_ID_CONSTRAINED 25
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#define SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED 26
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#define SSH_AGENT_CONSTRAIN_LIFETIME 1
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#define SSH_AGENT_CONSTRAIN_CONFIRM 2
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/* extended failure messages */
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#define SSH2_AGENT_FAILURE 30
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/* additional error code for ssh.com's ssh-agent2 */
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#define SSH_COM_AGENT2_FAILURE 102
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#define SSH_AGENT_OLD_SIGNATURE 0x01
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typedef struct {
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int fd;
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Buffer identities;
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int howmany;
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} AuthenticationConnection;
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int ssh_agent_present(void);
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int ssh_get_authentication_socket(void);
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void ssh_close_authentication_socket(int);
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AuthenticationConnection *ssh_get_authentication_connection(void);
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void ssh_close_authentication_connection(AuthenticationConnection *);
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int ssh_get_num_identities(AuthenticationConnection *, int);
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Key *ssh_get_first_identity(AuthenticationConnection *, char **, int);
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Key *ssh_get_next_identity(AuthenticationConnection *, char **, int);
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int ssh_add_identity_constrained(AuthenticationConnection *, Key *,
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const char *, u_int, u_int);
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int ssh_remove_identity(AuthenticationConnection *, Key *);
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int ssh_remove_all_identities(AuthenticationConnection *, int);
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int ssh_lock_agent(AuthenticationConnection *, int, const char *);
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int ssh_update_card(AuthenticationConnection *, int, const char *,
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const char *, u_int, u_int);
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int
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ssh_decrypt_challenge(AuthenticationConnection *, Key *, BIGNUM *, u_char[16],
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u_int, u_char[16]);
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int
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ssh_agent_sign(AuthenticationConnection *, Key *, u_char **, u_int *, u_char *,
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u_int);
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#endif /* AUTHFD_H */
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