1 /*        $NetBSD: isakmp_xauth.h,v 1.10 2020/11/25 18:11:00 bouyer Exp $       */
2 
3 /*        $KAME$ */
4 
5 /*
6  * Copyright (C) 2004 Emmanuel Dreyfus
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. Neither the name of the project nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #ifndef _ISAKMP_XAUTH_H
35 #define _ISAKMP_XAUTH_H
36 
37 #include "schedule.h"
38 
39 /* ISAKMP mode config attribute types specific to the Xauth vendor ID */
40 #define   XAUTH_TYPE                16520
41 #define   XAUTH_USER_NAME           16521
42 #define   XAUTH_USER_PASSWORD       16522
43 #define   XAUTH_PASSCODE            16523
44 #define   XAUTH_MESSAGE             16524
45 #define   XAUTH_CHALLENGE           16525
46 #define   XAUTH_DOMAIN              16526
47 #define   XAUTH_STATUS              16527
48 #define   XAUTH_NEXT_PIN            16528
49 #define   XAUTH_ANSWER              16529
50 
51 /* Types for XAUTH_TYPE */
52 #define   XAUTH_TYPE_GENERIC  0
53 #define   XAUTH_TYPE_CHAP     1
54 #define   XAUTH_TYPE_OTP      2
55 #define   XAUTH_TYPE_SKEY     3
56 
57 /* Values for XAUTH_STATUS */
58 #define   XAUTH_STATUS_FAIL       0
59 #define   XAUTH_STATUS_OK         1
60 
61 /* For phase 1 Xauth status */
62 struct xauth_state {
63           int status; /* authentication status, used only on server side */
64           int vendorid;
65           int authtype;
66           union {
67                     struct authgeneric {
68                               char *usr;
69                               char *pwd;
70                     } generic;
71           } authdata;
72 #ifdef HAVE_LIBLDAP
73           char *udn; /* ldap user dn */
74 #endif
75 };
76 
77 /* What's been sent */
78 #define XAUTH_SENT_USERNAME 1
79 #define XAUTH_SENT_PASSWORD 2
80 #define XAUTH_SENT_EVERYTHING (XAUTH_SENT_USERNAME | XAUTH_SENT_PASSWORD)
81 
82 /* For rmconf Xauth data */
83 struct xauth_rmconf {
84           vchar_t *login;     /* xauth login */
85           vchar_t *pass;      /* xauth password */
86           int state;      /* what's been sent */
87 };
88 
89 /* status */
90 #define XAUTHST_NOTYET        0
91 #define XAUTHST_REQSENT       1
92 #define XAUTHST_OK  2
93 
94 struct xauth_reply_arg {
95           struct sched sc;
96           isakmp_index index;
97           int port;
98           int id;
99           int res;
100 };
101 
102 struct ph1handle;
103 struct isakmp_data;
104 void xauth_sendreq(struct ph1handle *);
105 int xauth_attr_reply(struct ph1handle *, struct isakmp_data *, int);
106 int xauth_login_system(char *, char *);
107 void xauth_sendstatus(struct ph1handle *, int, int);
108 int xauth_check(struct ph1handle *);
109 int group_check(struct ph1handle *, char **, int);
110 vchar_t *isakmp_xauth_req(struct ph1handle *, struct isakmp_data *);
111 vchar_t *isakmp_xauth_set(struct ph1handle *, struct isakmp_data *);
112 void xauth_rmstate(struct xauth_state *);
113 void xauth_reply_stub(struct sched *);
114 int xauth_reply(struct ph1handle *, int, int, int);
115 int xauth_rmconf_used(struct xauth_rmconf **);
116 void xauth_rmconf_delete(struct xauth_rmconf **);
117 struct xauth_rmconf * xauth_rmconf_dup(struct xauth_rmconf *);
118 
119 #ifdef HAVE_LIBPAM
120 int xauth_login_pam(int, struct sockaddr *, char *, char *);
121 #endif
122 
123 #ifdef HAVE_LIBRADIUS
124 
125 #define RADIUS_MAX_SERVERS 5
126 
127 struct rad_serv {
128           vchar_t             *host;
129           int                 port;
130           vchar_t             *secret;
131 };
132 
133 struct xauth_rad_config {
134           struct rad_serv     auth_server_list[RADIUS_MAX_SERVERS];
135           int                 auth_server_count;
136           struct rad_serv     acct_server_list[RADIUS_MAX_SERVERS];
137           int                 acct_server_count;
138           int                 timeout;
139           int                 retries;
140 };
141 
142 extern struct xauth_rad_config xauth_rad_config;
143 
144 int xauth_radius_init_conf(int free);
145 int xauth_radius_init(void);
146 int xauth_login_radius(struct ph1handle *, char *, char *);
147 
148 #endif
149 
150 #ifdef HAVE_LIBLDAP
151 
152 #define LDAP_DFLT_HOST                  "localhost"
153 #define LDAP_DFLT_USER                  "cn"
154 #define LDAP_DFLT_ADDR                  "racoon-address"
155 #define LDAP_DFLT_MASK                  "racoon-netmask"
156 #define LDAP_DFLT_GROUP                 "cn"
157 #define LDAP_DFLT_MEMBER      "member"
158 
159 struct xauth_ldap_config {
160           int                 pver;
161           int                 debug;
162           int                 timeout;
163           vchar_t   *uri;
164           vchar_t   *host;
165           int                 port;
166           int                 tls;
167           vchar_t             *base;
168           int                 subtree;
169           vchar_t             *bind_dn;
170           vchar_t             *bind_pw;
171           int                 auth_type;
172           vchar_t             *attr_user;
173           vchar_t             *attr_addr;
174           vchar_t             *attr_mask;
175           vchar_t             *attr_group;
176           vchar_t             *attr_member;
177 };
178 
179 extern struct xauth_ldap_config xauth_ldap_config;
180 
181 int xauth_ldap_init_conf(void);
182 int xauth_login_ldap(struct ph1handle *, char *, char *);
183 
184 #endif
185 
186 #endif /* _ISAKMP_XAUTH_H */
187