Annotation of src/usr.bin/ssh/auth.h, Revision 1.15
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: *
1.15 ! markus 24: * $OpenBSD: auth.h,v 1.14 2001/03/28 22:43:31 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);
1.15 ! markus 60:
! 61: /* extended interface similar to auth_rhosts() */
! 62: int
! 63: auth_rhosts2(struct passwd *pw, const char *client_user, const char *hostname,
! 64: const char *ipaddr);
1.10 markus 65:
66: /*
67: * Tries to authenticate the user using the .rhosts file and the host using
68: * its host key. Returns true if authentication succeeds.
69: */
70: int
71: auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
72:
73: /*
74: * Tries to authenticate the user using password. Returns true if
75: * authentication succeeds.
76: */
1.13 markus 77: int auth_password(Authctxt *authctxt, const char *password);
1.10 markus 78:
79: /*
80: * Performs the RSA authentication dialog with the client. This returns 0 if
81: * the client could not be authenticated, and 1 if authentication was
82: * successful. This may exit if there is a serious protocol violation.
83: */
84: int auth_rsa(struct passwd * pw, BIGNUM * client_n);
85:
86: /*
87: * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer
88: * over the key. Skips any whitespace at the beginning and at end.
89: */
90: int auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n);
91:
92: /*
93: * Performs the RSA authentication challenge-response dialog with the client,
94: * and returns true (non-zero) if the client gave the correct answer to our
95: * challenge; returns zero if the client gives a wrong answer.
96: */
97: int auth_rsa_challenge_dialog(RSA *pk);
98:
99: #ifdef KRB4
100: #include <krb.h>
101: /*
102: * Performs Kerberos v4 mutual authentication with the client. This returns 0
103: * if the client could not be authenticated, and 1 if authentication was
104: * successful. This may exit if there is a serious protocol violation.
105: */
106: int auth_krb4(const char *server_user, KTEXT auth, char **client);
107: int krb4_init(uid_t uid);
108: void krb4_cleanup_proc(void *ignore);
109: int auth_krb4_password(struct passwd * pw, const char *password);
110:
111: #ifdef AFS
112: #include <kafs.h>
113:
114: /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
115: int auth_kerberos_tgt(struct passwd * pw, const char *string);
116: int auth_afs_token(struct passwd * pw, const char *token_string);
117: #endif /* AFS */
118:
119: #endif /* KRB4 */
1.6 markus 120:
1.1 markus 121: void do_authentication(void);
1.2 markus 122: void do_authentication2(void);
123:
1.9 markus 124: Authctxt *authctxt_new(void);
125: void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info);
1.14 markus 126: void userauth_finish(Authctxt *authctxt, int authenticated, char *method);
1.11 markus 127: int auth_root_allowed(char *method);
1.6 markus 128:
1.9 markus 129: int auth2_challenge(Authctxt *authctxt, char *devs);
1.1 markus 130:
1.6 markus 131: int allowed_user(struct passwd * pw);
1.9 markus 132:
133: char *get_challenge(Authctxt *authctxt, char *devs);
134: int verify_response(Authctxt *authctxt, char *response);
135:
1.6 markus 136: struct passwd * auth_get_user(void);
1.3 markus 137:
138: #define AUTH_FAIL_MAX 6
139: #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2)
140: #define AUTH_FAIL_MSG "Too many authentication failures for %.100s"
141:
1.1 markus 142: #endif
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