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