Ben Lindstrom | 05764b9 | 2002-03-05 01:53:02 +0000 | [diff] [blame] | 1 | /* $OpenBSD: auth.h,v 1.29 2002/03/04 17:27:39 stevesk Exp $ */ |
| 2 | |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 3 | /* |
| 4 | * Copyright (c) 2000 Markus Friedl. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 25 | * |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 26 | */ |
Ben Lindstrom | 05764b9 | 2002-03-05 01:53:02 +0000 | [diff] [blame] | 27 | |
Damien Miller | b38eff8 | 2000-04-01 11:09:21 +1000 | [diff] [blame] | 28 | #ifndef AUTH_H |
| 29 | #define AUTH_H |
| 30 | |
Ben Lindstrom | 83647ce | 2001-06-25 04:30:16 +0000 | [diff] [blame] | 31 | #include "key.h" |
| 32 | #include "hostfile.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 33 | #include <openssl/rsa.h> |
| 34 | |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 35 | #ifdef HAVE_LOGIN_CAP |
| 36 | #include <login_cap.h> |
| 37 | #endif |
| 38 | #ifdef BSD_AUTH |
| 39 | #include <bsd_auth.h> |
| 40 | #endif |
Ben Lindstrom | ec95ed9 | 2001-07-04 04:21:14 +0000 | [diff] [blame] | 41 | #ifdef KRB5 |
| 42 | #include <krb5.h> |
| 43 | #endif |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 44 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 45 | typedef struct Authctxt Authctxt; |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 46 | typedef struct KbdintDevice KbdintDevice; |
| 47 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 48 | struct Authctxt { |
Ben Lindstrom | ec95ed9 | 2001-07-04 04:21:14 +0000 | [diff] [blame] | 49 | int success; |
| 50 | int postponed; |
| 51 | int valid; |
| 52 | int attempt; |
| 53 | int failures; |
| 54 | char *user; |
| 55 | char *service; |
| 56 | struct passwd *pw; |
| 57 | char *style; |
| 58 | void *kbdintctxt; |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 59 | #ifdef BSD_AUTH |
Ben Lindstrom | ec95ed9 | 2001-07-04 04:21:14 +0000 | [diff] [blame] | 60 | auth_session_t *as; |
| 61 | #endif |
| 62 | #ifdef KRB4 |
| 63 | char *krb4_ticket_file; |
| 64 | #endif |
| 65 | #ifdef KRB5 |
| 66 | krb5_context krb5_ctx; |
| 67 | krb5_auth_context krb5_auth_ctx; |
| 68 | krb5_ccache krb5_fwd_ccache; |
| 69 | krb5_principal krb5_user; |
| 70 | char *krb5_ticket_file; |
Damien Miller | 60396b0 | 2001-02-18 17:01:00 +1100 | [diff] [blame] | 71 | #endif |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 72 | }; |
| 73 | |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 74 | /* |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 75 | * Keyboard interactive device: |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 76 | * init_ctx returns: non NULL upon success |
| 77 | * query returns: 0 - success, otherwise failure |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 78 | * respond returns: 0 - success, 1 - need further interaction, |
| 79 | * otherwise - failure |
| 80 | */ |
| 81 | struct KbdintDevice |
| 82 | { |
| 83 | const char *name; |
Damien Miller | b046211 | 2002-02-19 15:24:43 +1100 | [diff] [blame] | 84 | void* (*init_ctx)(Authctxt*); |
Damien Miller | a93c6d8 | 2002-02-19 15:25:29 +1100 | [diff] [blame] | 85 | int (*query)(void *ctx, char **name, char **infotxt, |
| 86 | u_int *numprompts, char ***prompts, u_int **echo_on); |
Damien Miller | b046211 | 2002-02-19 15:24:43 +1100 | [diff] [blame] | 87 | int (*respond)(void *ctx, u_int numresp, char **responses); |
| 88 | void (*free_ctx)(void *ctx); |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 89 | }; |
| 90 | |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 91 | int auth_rhosts(struct passwd *, const char *); |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 92 | int |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 93 | auth_rhosts2(struct passwd *, const char *, const char *, const char *); |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 94 | |
Damien Miller | d221ca6 | 2002-01-22 23:11:00 +1100 | [diff] [blame] | 95 | int auth_rhosts_rsa(struct passwd *, const char *, Key *); |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 96 | int auth_password(Authctxt *, const char *); |
| 97 | int auth_rsa(struct passwd *, BIGNUM *); |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 98 | int auth_rsa_challenge_dialog(RSA *); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 99 | |
| 100 | #ifdef KRB4 |
| 101 | #include <krb.h> |
Ben Lindstrom | ec95ed9 | 2001-07-04 04:21:14 +0000 | [diff] [blame] | 102 | int auth_krb4(Authctxt *, KTEXT, char **); |
| 103 | int auth_krb4_password(Authctxt *, const char *); |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 104 | void krb4_cleanup_proc(void *); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 105 | |
| 106 | #ifdef AFS |
| 107 | #include <kafs.h> |
Ben Lindstrom | ec95ed9 | 2001-07-04 04:21:14 +0000 | [diff] [blame] | 108 | int auth_krb4_tgt(Authctxt *, const char *); |
| 109 | int auth_afs_token(Authctxt *, const char *); |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 110 | #endif /* AFS */ |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 111 | |
Ben Lindstrom | 4cc240d | 2001-07-04 04:46:56 +0000 | [diff] [blame] | 112 | #endif /* KRB4 */ |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 113 | |
Ben Lindstrom | ec95ed9 | 2001-07-04 04:21:14 +0000 | [diff] [blame] | 114 | #ifdef KRB5 |
| 115 | int auth_krb5(Authctxt *authctxt, krb5_data *auth, char **client); |
| 116 | int auth_krb5_tgt(Authctxt *authctxt, krb5_data *tgt); |
| 117 | int auth_krb5_password(Authctxt *authctxt, const char *password); |
| 118 | void krb5_cleanup_proc(void *authctxt); |
| 119 | #endif /* KRB5 */ |
| 120 | |
Damien Miller | b848158 | 2000-12-03 11:51:51 +1100 | [diff] [blame] | 121 | #include "auth-pam.h" |
| 122 | #include "auth2-pam.h" |
| 123 | |
Damien Miller | 3a5b023 | 2002-03-13 13:19:42 +1100 | [diff] [blame] | 124 | void do_authentication(void); |
| 125 | void do_authentication2(void); |
Damien Miller | efb4afe | 2000-04-12 18:45:05 +1000 | [diff] [blame] | 126 | |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 127 | Authctxt *authctxt_new(void); |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 128 | void auth_log(Authctxt *, int, char *, char *); |
| 129 | void userauth_finish(Authctxt *, int, char *); |
| 130 | int auth_root_allowed(char *); |
Damien Miller | b38eff8 | 2000-04-01 11:09:21 +1000 | [diff] [blame] | 131 | |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 132 | int auth2_challenge(Authctxt *, char *); |
Damien Miller | ee11625 | 2001-12-21 12:42:34 +1100 | [diff] [blame] | 133 | void auth2_challenge_stop(Authctxt *); |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 134 | |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 135 | int allowed_user(struct passwd *); |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 136 | |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 137 | char *get_challenge(Authctxt *); |
| 138 | int verify_response(Authctxt *, const char *); |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 139 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 140 | struct passwd * auth_get_user(void); |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 141 | |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 142 | char *expand_filename(const char *, struct passwd *); |
| 143 | char *authorized_keys_file(struct passwd *); |
| 144 | char *authorized_keys_file2(struct passwd *); |
Ben Lindstrom | bfb3a0e | 2001-06-05 20:25:05 +0000 | [diff] [blame] | 145 | |
Ben Lindstrom | bfb3a0e | 2001-06-05 20:25:05 +0000 | [diff] [blame] | 146 | int |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 147 | secure_filename(FILE *, const char *, struct passwd *, char *, size_t); |
Ben Lindstrom | bfb3a0e | 2001-06-05 20:25:05 +0000 | [diff] [blame] | 148 | |
Ben Lindstrom | 83647ce | 2001-06-25 04:30:16 +0000 | [diff] [blame] | 149 | HostStatus |
Ben Lindstrom | 16ae3d0 | 2001-07-04 04:02:36 +0000 | [diff] [blame] | 150 | check_key_in_hostfiles(struct passwd *, Key *, const char *, |
| 151 | const char *, const char *); |
Ben Lindstrom | 83647ce | 2001-06-25 04:30:16 +0000 | [diff] [blame] | 152 | |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 153 | #define AUTH_FAIL_MAX 6 |
| 154 | #define AUTH_FAIL_LOG (AUTH_FAIL_MAX/2) |
| 155 | #define AUTH_FAIL_MSG "Too many authentication failures for %.100s" |
| 156 | |
Damien Miller | b38eff8 | 2000-04-01 11:09:21 +1000 | [diff] [blame] | 157 | #endif |