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bcbf86ec | 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. | |
8abcdba4 | 23 | * |
5ba55ada | 24 | * $OpenBSD: auth.h,v 1.16 2001/05/18 14:13:28 markus Exp $ |
bcbf86ec | 25 | */ |
7368a6c8 | 26 | #ifndef AUTH_H |
27 | #define AUTH_H | |
28 | ||
42f11eb2 | 29 | #include <openssl/rsa.h> |
30 | ||
af774732 | 31 | #ifdef HAVE_LOGIN_CAP |
32 | #include <login_cap.h> | |
33 | #endif | |
34 | #ifdef BSD_AUTH | |
35 | #include <bsd_auth.h> | |
36 | #endif | |
37 | ||
94ec8c6b | 38 | typedef struct Authctxt Authctxt; |
5ba55ada | 39 | typedef struct KbdintDevice KbdintDevice; |
40 | ||
94ec8c6b | 41 | struct Authctxt { |
42 | int success; | |
59c97189 | 43 | int postponed; |
94ec8c6b | 44 | int valid; |
45 | int attempt; | |
8abcdba4 | 46 | int failures; |
94ec8c6b | 47 | char *user; |
48 | char *service; | |
49 | struct passwd *pw; | |
59c97189 | 50 | char *style; |
5ba55ada | 51 | void *kbdintctxt; |
af774732 | 52 | #ifdef BSD_AUTH |
53 | auth_session_t *as; | |
54 | #endif | |
94ec8c6b | 55 | }; |
56 | ||
5ba55ada | 57 | /* |
58 | * Keyboard interactive device: | |
59 | * init_ctx returns: non NULL upon success | |
60 | * query returns: 0 - success, otherwise failure | |
61 | * respond returns: 0 - success, 1 - need further interaction, | |
62 | * otherwise - failure | |
63 | */ | |
64 | struct KbdintDevice | |
65 | { | |
66 | const char *name; | |
67 | void* (*init_ctx) __P((Authctxt*)); | |
68 | int (*query) __P((void *ctx, char **name, char **infotxt, | |
69 | u_int *numprompts, char ***prompts, | |
70 | u_int **echo_on)); | |
71 | int (*respond) __P((void *ctx, u_int numresp, char **responses)); | |
72 | void (*free_ctx) __P((void *ctx)); | |
73 | }; | |
74 | ||
42f11eb2 | 75 | /* |
76 | * Tries to authenticate the user using the .rhosts file. Returns true if | |
77 | * authentication succeeds. If ignore_rhosts is non-zero, this will not | |
78 | * consider .rhosts and .shosts (/etc/hosts.equiv will still be used). | |
79 | */ | |
80 | int auth_rhosts(struct passwd * pw, const char *client_user); | |
81 | ||
8002af61 | 82 | /* extended interface similar to auth_rhosts() */ |
83 | int | |
84 | auth_rhosts2(struct passwd *pw, const char *client_user, const char *hostname, | |
85 | const char *ipaddr); | |
86 | ||
42f11eb2 | 87 | /* |
88 | * Tries to authenticate the user using the .rhosts file and the host using | |
89 | * its host key. Returns true if authentication succeeds. | |
90 | */ | |
91 | int | |
92 | auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key); | |
93 | ||
94 | /* | |
95 | * Tries to authenticate the user using password. Returns true if | |
96 | * authentication succeeds. | |
97 | */ | |
af774732 | 98 | int auth_password(Authctxt *authctxt, const char *password); |
42f11eb2 | 99 | |
100 | /* | |
101 | * Performs the RSA authentication dialog with the client. This returns 0 if | |
102 | * the client could not be authenticated, and 1 if authentication was | |
103 | * successful. This may exit if there is a serious protocol violation. | |
104 | */ | |
105 | int auth_rsa(struct passwd * pw, BIGNUM * client_n); | |
106 | ||
107 | /* | |
108 | * Parses an RSA key (number of bits, e, n) from a string. Moves the pointer | |
109 | * over the key. Skips any whitespace at the beginning and at end. | |
110 | */ | |
111 | int auth_rsa_read_key(char **cpp, u_int *bitsp, BIGNUM * e, BIGNUM * n); | |
112 | ||
113 | /* | |
114 | * Performs the RSA authentication challenge-response dialog with the client, | |
115 | * and returns true (non-zero) if the client gave the correct answer to our | |
116 | * challenge; returns zero if the client gives a wrong answer. | |
117 | */ | |
118 | int auth_rsa_challenge_dialog(RSA *pk); | |
119 | ||
120 | #ifdef KRB4 | |
121 | #include <krb.h> | |
122 | /* | |
123 | * Performs Kerberos v4 mutual authentication with the client. This returns 0 | |
124 | * if the client could not be authenticated, and 1 if authentication was | |
125 | * successful. This may exit if there is a serious protocol violation. | |
126 | */ | |
127 | int auth_krb4(const char *server_user, KTEXT auth, char **client); | |
128 | int krb4_init(uid_t uid); | |
129 | void krb4_cleanup_proc(void *ignore); | |
130 | int auth_krb4_password(struct passwd * pw, const char *password); | |
131 | ||
132 | #ifdef AFS | |
133 | #include <kafs.h> | |
134 | ||
135 | /* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */ | |
136 | int auth_kerberos_tgt(struct passwd * pw, const char *string); | |
137 | int auth_afs_token(struct passwd * pw, const char *token_string); | |
138 | #endif /* AFS */ | |
139 | ||
140 | #endif /* KRB4 */ | |
141 | ||
8c9fe09e | 142 | #include "auth-pam.h" |
143 | #include "auth2-pam.h" | |
144 | ||
7368a6c8 | 145 | void do_authentication(void); |
e78a59f5 | 146 | void do_authentication2(void); |
147 | ||
59c97189 | 148 | Authctxt *authctxt_new(void); |
149 | void auth_log(Authctxt *authctxt, int authenticated, char *method, char *info); | |
d9cd3575 | 150 | void userauth_finish(Authctxt *authctxt, int authenticated, char *method); |
15853e93 | 151 | int auth_root_allowed(char *method); |
94ec8c6b | 152 | |
59c97189 | 153 | int auth2_challenge(Authctxt *authctxt, char *devs); |
7368a6c8 | 154 | |
94ec8c6b | 155 | int allowed_user(struct passwd * pw); |
59c97189 | 156 | |
5ba55ada | 157 | char *get_challenge(Authctxt *authctxt); |
158 | int verify_response(Authctxt *authctxt, const char *response); | |
59c97189 | 159 | |
94ec8c6b | 160 | struct passwd * auth_get_user(void); |
a306f2dd | 161 | |
162 | #define AUTH_FAIL_MAX 6 | |
163 | #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2) | |
164 | #define AUTH_FAIL_MSG "Too many authentication failures for %.100s" | |
165 | ||
7368a6c8 | 166 | #endif |