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8efc0c15 | 1 | /* |
6ae2364d | 2 | * |
5260325f | 3 | * authfd.h |
6ae2364d | 4 | * |
5260325f | 5 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
6ae2364d | 6 | * |
5260325f | 7 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
8 | * All rights reserved | |
6ae2364d | 9 | * |
5260325f | 10 | * Created: Wed Mar 29 01:17:41 1995 ylo |
6ae2364d | 11 | * |
5260325f | 12 | * Functions to interface with the SSH_AUTHENTICATION_FD socket. |
6ae2364d | 13 | * |
5260325f | 14 | */ |
8efc0c15 | 15 | |
2e73a022 | 16 | /* RCSID("$OpenBSD: authfd.h,v 1.10 2000/08/19 21:34:43 markus Exp $"); */ |
8efc0c15 | 17 | |
18 | #ifndef AUTHFD_H | |
19 | #define AUTHFD_H | |
20 | ||
21 | #include "buffer.h" | |
22 | ||
23 | /* Messages for the authentication agent connection. */ | |
24 | #define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1 | |
25 | #define SSH_AGENT_RSA_IDENTITIES_ANSWER 2 | |
26 | #define SSH_AGENTC_RSA_CHALLENGE 3 | |
27 | #define SSH_AGENT_RSA_RESPONSE 4 | |
28 | #define SSH_AGENT_FAILURE 5 | |
29 | #define SSH_AGENT_SUCCESS 6 | |
30 | #define SSH_AGENTC_ADD_RSA_IDENTITY 7 | |
31 | #define SSH_AGENTC_REMOVE_RSA_IDENTITY 8 | |
32 | #define SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 | |
33 | ||
4c8722d9 | 34 | #define SSH2_AGENTC_REQUEST_IDENTITIES 11 |
35 | #define SSH2_AGENT_IDENTITIES_ANSWER 12 | |
36 | #define SSH2_AGENTC_SIGN_REQUEST 13 | |
37 | #define SSH2_AGENT_SIGN_RESPONSE 14 | |
4c8722d9 | 38 | #define SSH2_AGENTC_ADD_IDENTITY 17 |
39 | #define SSH2_AGENTC_REMOVE_IDENTITY 18 | |
40 | #define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19 | |
41 | ||
5260325f | 42 | typedef struct { |
43 | int fd; | |
5260325f | 44 | Buffer identities; |
45 | int howmany; | |
46 | } AuthenticationConnection; | |
2e73a022 | 47 | |
8efc0c15 | 48 | /* Returns the number of the authentication fd, or -1 if there is none. */ |
5260325f | 49 | int ssh_get_authentication_socket(); |
8efc0c15 | 50 | |
aa3378df | 51 | /* |
52 | * This should be called for any descriptor returned by | |
53 | * ssh_get_authentication_socket(). Depending on the way the descriptor was | |
54 | * obtained, this may close the descriptor. | |
55 | */ | |
5260325f | 56 | void ssh_close_authentication_socket(int authfd); |
8efc0c15 | 57 | |
aa3378df | 58 | /* |
59 | * Opens and connects a private socket for communication with the | |
60 | * authentication agent. Returns NULL if an error occurred and the | |
61 | * connection could not be opened. The connection should be closed by the | |
62 | * caller by calling ssh_close_authentication_connection(). | |
63 | */ | |
8efc0c15 | 64 | AuthenticationConnection *ssh_get_authentication_connection(); |
65 | ||
aa3378df | 66 | /* |
67 | * Closes the connection to the authentication agent and frees any associated | |
68 | * memory. | |
69 | */ | |
2e73a022 | 70 | void ssh_close_authentication_connection(AuthenticationConnection *auth); |
8efc0c15 | 71 | |
aa3378df | 72 | /* |
2e73a022 | 73 | * Returns the first authentication identity held by the agent or NULL if |
74 | * no identies are available. Caller must free comment and key. | |
75 | * Note that you cannot mix calls with different versions. | |
aa3378df | 76 | */ |
2e73a022 | 77 | Key *ssh_get_first_identity(AuthenticationConnection *auth, char **comment, int version); |
8efc0c15 | 78 | |
aa3378df | 79 | /* |
80 | * Returns the next authentication identity for the agent. Other functions | |
81 | * can be called between this and ssh_get_first_identity or two calls of this | |
2e73a022 | 82 | * function. This returns NULL if there are no more identities. The caller |
83 | * must free key and comment after a successful return. | |
aa3378df | 84 | */ |
2e73a022 | 85 | Key *ssh_get_next_identity(AuthenticationConnection *auth, char **comment, int version); |
8efc0c15 | 86 | |
2e73a022 | 87 | /* |
88 | * Requests the agent to decrypt the given challenge. Returns true if the | |
89 | * agent claims it was able to decrypt it. | |
90 | */ | |
6ae2364d | 91 | int |
2e73a022 | 92 | ssh_decrypt_challenge(AuthenticationConnection *auth, |
93 | Key *key, BIGNUM * challenge, | |
5260325f | 94 | unsigned char session_id[16], |
95 | unsigned int response_type, | |
96 | unsigned char response[16]); | |
8efc0c15 | 97 | |
2e73a022 | 98 | /* Requests the agent to sign data using key */ |
99 | int | |
100 | ssh_agent_sign(AuthenticationConnection *auth, | |
101 | Key *key, | |
102 | unsigned char **sigp, int *lenp, | |
103 | unsigned char *data, int datalen); | |
104 | ||
aa3378df | 105 | /* |
106 | * Adds an identity to the authentication server. This call is not meant to | |
107 | * be used by normal applications. This returns true if the identity was | |
108 | * successfully added. | |
109 | */ | |
6ae2364d | 110 | int |
2e73a022 | 111 | ssh_add_identity(AuthenticationConnection *auth, Key *key, |
aa3378df | 112 | const char *comment); |
8efc0c15 | 113 | |
aa3378df | 114 | /* |
115 | * Removes the identity from the authentication server. This call is not | |
116 | * meant to be used by normal applications. This returns true if the | |
117 | * identity was successfully added. | |
118 | */ | |
2e73a022 | 119 | int ssh_remove_identity(AuthenticationConnection *auth, Key *key); |
8efc0c15 | 120 | |
aa3378df | 121 | /* |
122 | * Removes all identities from the authentication agent. This call is not | |
123 | * meant to be used by normal applications. This returns true if the | |
124 | * operation was successful. | |
125 | */ | |
2e73a022 | 126 | int ssh_remove_all_identities(AuthenticationConnection *auth, int version); |
8efc0c15 | 127 | |
5260325f | 128 | #endif /* AUTHFD_H */ |