Annotation of src/usr.bin/ssh/auth.h, Revision 1.13
1.5 deraadt 1: /*
2: * Copyright (c) 2000 Markus Friedl. All rights reserved.
3: *
4: * Redistribution and use in source and binary forms, with or without
5: * modification, are permitted provided that the following conditions
6: * are met:
7: * 1. Redistributions of source code must retain the above copyright
8: * notice, this list of conditions and the following disclaimer.
9: * 2. Redistributions in binary form must reproduce the above copyright
10: * notice, this list of conditions and the following disclaimer in the
11: * documentation and/or other materials provided with the distribution.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.7 djm 23: *
1.13 ! markus 24: * $OpenBSD: auth.h,v 1.12 2001/02/22 21:59:43 markus Exp $
1.5 deraadt 25: */
1.1 markus 26: #ifndef AUTH_H
27: #define AUTH_H
28:
1.10 markus 29: #include <openssl/rsa.h>
30:
1.13 ! markus 31: #ifdef HAVE_LOGIN_CAP
! 32: #include <login_cap.h>
! 33: #endif
! 34: #ifdef BSD_AUTH
! 35: #include <bsd_auth.h>
! 36: #endif
! 37:
1.6 markus 38: typedef struct Authctxt Authctxt;
39: struct Authctxt {
40: int success;
1.9 markus 41: int postponed;
1.6 markus 42: int valid;
43: int attempt;
1.8 markus 44: int failures;
1.6 markus 45: char *user;
46: char *service;
47: struct passwd *pw;
1.9 markus 48: char *style;
1.13 ! markus 49: #ifdef BSD_AUTH
! 50: auth_session_t *as;
! 51: #endif
1.6 markus 52: };
1.10 markus 53:
54: /*
55: * Tries to authenticate the user using the .rhosts file. Returns true if
56: * authentication succeeds. If ignore_rhosts is non-zero, this will not
57: * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
58: */
59: int auth_rhosts(struct passwd * pw, const char *client_user);
60:
61: /*
62: * Tries to authenticate the user using the .rhosts file and the host using
63: * its host key. Returns true if authentication succeeds.
64: */
65: int
66: auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
67:
68: /*
69: * Tries to authenticate the user using password. Returns true if
70: * authentication succeeds.
71: */
1.13 ! markus 72: int auth_password(Authctxt *authctxt, const char *password);
1.10 markus 73:
74: /*
75: * Performs the RSA authentication dialog with the client. This returns 0 if
76: * the client could not be authenticated, and 1 if authentication was
77: * successful. This may exit if there is a serious protocol violation.
78: */
79: int auth_rsa(struct passwd * pw, BIGNUM * client_n);
80:
81: /*
82: * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
83: * over the key. Skips any whitespace at the beginning and at end.
84: */
85: int auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n);
86:
87: /*
88: * Performs the RSA authentication challenge-response dialog with the client,
89: * and returns true (non-zero) if the client gave the correct answer to our
90: * challenge; returns zero if the client gives a wrong answer.
91: */
92: int auth_rsa_challenge_dialog(RSA *pk);
93:
94: #ifdef KRB4
95: #include <krb.h>
96: /*
97: * Performs Kerberos v4 mutual authentication with the client. This returns 0
98: * if the client could not be authenticated, and 1 if authentication was
99: * successful. This may exit if there is a serious protocol violation.
100: */
101: int auth_krb4(const char *server_user, KTEXT auth, char **client);
102: int krb4_init(uid_t uid);
103: void krb4_cleanup_proc(void *ignore);
104: int auth_krb4_password(struct passwd * pw, const char *password);
105:
106: #ifdef AFS
107: #include <kafs.h>
108:
109: /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
110: int auth_kerberos_tgt(struct passwd * pw, const char *string);
111: int auth_afs_token(struct passwd * pw, const char *token_string);
112: #endif /* AFS */
113:
114: #endif /* KRB4 */
1.6 markus 115:
1.1 markus 116: void do_authentication(void);
1.2 markus 117: void do_authentication2(void);
118:
1.9 markus 119: Authctxt *authctxt_new(void);
120: void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info);
1.6 markus 121: void userauth_reply(Authctxt *authctxt, int authenticated);
1.11 markus 122: int auth_root_allowed(char *method);
1.6 markus 123:
1.9 markus 124: int auth2_challenge(Authctxt *authctxt, char *devs);
1.1 markus 125:
1.6 markus 126: int allowed_user(struct passwd * pw);
1.9 markus 127:
128: char *get_challenge(Authctxt *authctxt, char *devs);
129: int verify_response(Authctxt *authctxt, char *response);
130:
1.6 markus 131: struct passwd * auth_get_user(void);
1.3 markus 132:
133: #define AUTH_FAIL_MAX 6
134: #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
135: #define AUTH_FAIL_MSG "Too many authentication failures for %.100s"
136:
1.1 markus 137: #endif
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