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8efc0c15 | 1 | /* |
2 | ||
3 | authfd.h | |
4 | ||
5 | Author: Tatu Ylonen <ylo@cs.hut.fi> | |
6 | ||
7 | Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
8 | All rights reserved | |
9 | ||
10 | Created: Wed Mar 29 01:17:41 1995 ylo | |
11 | ||
12 | Functions to interface with the SSH_AUTHENTICATION_FD socket. | |
13 | ||
14 | */ | |
15 | ||
16 | /* RCSID("$Id$"); */ | |
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 | ||
34 | typedef struct | |
35 | { | |
36 | int fd; | |
37 | Buffer packet; | |
38 | Buffer identities; | |
39 | int howmany; | |
40 | } AuthenticationConnection; | |
41 | ||
42 | /* Returns the number of the authentication fd, or -1 if there is none. */ | |
43 | int ssh_get_authentication_socket(); | |
44 | ||
45 | /* This should be called for any descriptor returned by | |
46 | ssh_get_authentication_socket(). Depending on the way the descriptor was | |
47 | obtained, this may close the descriptor. */ | |
48 | void ssh_close_authentication_socket(int authfd); | |
49 | ||
50 | /* Opens and connects a private socket for communication with the | |
51 | authentication agent. Returns NULL if an error occurred and the | |
52 | connection could not be opened. The connection should be closed by | |
53 | the caller by calling ssh_close_authentication_connection(). */ | |
54 | AuthenticationConnection *ssh_get_authentication_connection(); | |
55 | ||
56 | /* Closes the connection to the authentication agent and frees any associated | |
57 | memory. */ | |
58 | void ssh_close_authentication_connection(AuthenticationConnection *ac); | |
59 | ||
60 | /* Returns the first authentication identity held by the agent. | |
61 | Returns true if an identity is available, 0 otherwise. | |
62 | The caller must initialize the integers before the call, and free the | |
63 | comment after a successful call (before calling ssh_get_next_identity). */ | |
64 | int ssh_get_first_identity(AuthenticationConnection *connection, | |
4d195447 | 65 | BIGNUM *e, BIGNUM *n, char **comment); |
8efc0c15 | 66 | |
67 | /* Returns the next authentication identity for the agent. Other functions | |
68 | can be called between this and ssh_get_first_identity or two calls of this | |
69 | function. This returns 0 if there are no more identities. The caller | |
70 | must free comment after a successful return. */ | |
71 | int ssh_get_next_identity(AuthenticationConnection *connection, | |
4d195447 | 72 | BIGNUM *e, BIGNUM *n, char **comment); |
8efc0c15 | 73 | |
74 | /* Requests the agent to decrypt the given challenge. Returns true if | |
75 | the agent claims it was able to decrypt it. */ | |
76 | int ssh_decrypt_challenge(AuthenticationConnection *auth, | |
4d195447 | 77 | BIGNUM *e, BIGNUM *n, BIGNUM *challenge, |
8efc0c15 | 78 | unsigned char session_id[16], |
79 | unsigned int response_type, | |
80 | unsigned char response[16]); | |
81 | ||
82 | /* Adds an identity to the authentication server. This call is not meant to | |
83 | be used by normal applications. This returns true if the identity | |
84 | was successfully added. */ | |
85 | int ssh_add_identity(AuthenticationConnection *connection, | |
86 | RSA *key, const char *comment); | |
87 | ||
88 | /* Removes the identity from the authentication server. This call is | |
89 | not meant to be used by normal applications. This returns true if the | |
90 | identity was successfully added. */ | |
91 | int ssh_remove_identity(AuthenticationConnection *connection, | |
92 | RSA *key); | |
93 | ||
94 | /* Removes all identities from the authentication agent. This call is not | |
95 | meant to be used by normal applications. This returns true if the | |
96 | operation was successful. */ | |
97 | int ssh_remove_all_identities(AuthenticationConnection *connection); | |
98 | ||
99 | /* Closes the connection to the authentication agent. */ | |
100 | void ssh_close_authentication(AuthenticationConnection *connection); | |
101 | ||
102 | #endif /* AUTHFD_H */ |