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      1 /*	$NetBSD: isakmp_cfg.h,v 1.6 2006/09/09 16:22:09 manu 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 #ifdef HAVE_LIBPAM
     35 #include <security/pam_appl.h>
     36 #endif
     37 
     38 #ifdef ANDROID_PATCHED
     39 #include <arpa/inet.h>
     40 #ifndef MAXNS
     41 #define MAXNS 2
     42 #endif
     43 #endif
     44 
     45 /*
     46  * XXX don't forget to update
     47  * src/racoon/handler.c:exclude_cfg_addr()
     48  * if you add IPv6 capability
     49  */
     50 
     51 /* Attribute types */
     52 #define INTERNAL_IP4_ADDRESS        1
     53 #define INTERNAL_IP4_NETMASK        2
     54 #define INTERNAL_IP4_DNS            3
     55 #define INTERNAL_IP4_NBNS           4
     56 #define INTERNAL_ADDRESS_EXPIRY     5
     57 #define INTERNAL_IP4_DHCP           6
     58 #define APPLICATION_VERSION         7
     59 #define INTERNAL_IP6_ADDRESS        8
     60 #define INTERNAL_IP6_NETMASK        9
     61 #define INTERNAL_IP6_DNS           10
     62 #define INTERNAL_IP6_NBNS          11
     63 #define INTERNAL_IP6_DHCP          12
     64 #define INTERNAL_IP4_SUBNET        13
     65 #define SUPPORTED_ATTRIBUTES       14
     66 #define INTERNAL_IP6_SUBNET        15
     67 
     68 /* For APPLICATION_VERSION */
     69 #define ISAKMP_CFG_RACOON_VERSION "racoon / IPsec-tools"
     70 
     71 /* For the wins servers -- XXX find the value somewhere ? */
     72 #define MAXWINS 4
     73 
     74 /*
     75  * Global configuration for ISAKMP mode confiration address allocation
     76  * Read from the mode_cfg section of racoon.conf
     77  */
     78 struct isakmp_cfg_port {
     79 	char	used;
     80 #ifdef HAVE_LIBPAM
     81 	pam_handle_t *pam;
     82 #endif
     83 };
     84 
     85 struct isakmp_cfg_config {
     86 	in_addr_t		network4;
     87 	in_addr_t		netmask4;
     88 	in_addr_t		dns4[MAXNS];
     89 	int			dns4_index;
     90 	in_addr_t		nbns4[MAXWINS];
     91 	int			nbns4_index;
     92 	struct isakmp_cfg_port 	*port_pool;
     93 	int			authsource;
     94 	int			groupsource;
     95 	char			**grouplist;
     96 	int			groupcount;
     97 	int			confsource;
     98 	int			accounting;
     99 	size_t			pool_size;
    100 	int			auth_throttle;
    101 	/* XXX move this to a unity specific sub-structure */
    102 	char			default_domain[MAXPATHLEN + 1];
    103 	char			motd[MAXPATHLEN + 1];
    104 	struct unity_netentry	*splitnet_list;
    105 	int			splitnet_count;
    106 	int			splitnet_type;
    107 	char 			*splitdns_list;
    108 	int			splitdns_len;
    109 	int			pfs_group;
    110 	int			save_passwd;
    111 };
    112 
    113 /* For utmp updating */
    114 #define TERMSPEC	"vpn%d"
    115 
    116 /* For authsource */
    117 #define ISAKMP_CFG_AUTH_SYSTEM	0
    118 #define ISAKMP_CFG_AUTH_RADIUS	1
    119 #define ISAKMP_CFG_AUTH_PAM	2
    120 #define ISAKMP_CFG_AUTH_LDAP	4
    121 
    122 /* For groupsource */
    123 #define ISAKMP_CFG_GROUP_SYSTEM	0
    124 #define ISAKMP_CFG_GROUP_LDAP	1
    125 
    126 /* For confsource */
    127 #define ISAKMP_CFG_CONF_LOCAL	0
    128 #define ISAKMP_CFG_CONF_RADIUS	1
    129 #define ISAKMP_CFG_CONF_LDAP	2
    130 
    131 /* For accounting */
    132 #define ISAKMP_CFG_ACCT_NONE	0
    133 #define ISAKMP_CFG_ACCT_RADIUS	1
    134 #define ISAKMP_CFG_ACCT_PAM	2
    135 #define ISAKMP_CFG_ACCT_LDAP	3
    136 #define ISAKMP_CFG_ACCT_SYSTEM	4
    137 
    138 /* For pool_size */
    139 #define ISAKMP_CFG_MAX_CNX	255
    140 
    141 /* For motd */
    142 #define ISAKMP_CFG_MOTD	"/etc/motd"
    143 
    144 /* For default domain */
    145 #define ISAKMP_CFG_DEFAULT_DOMAIN ""
    146 
    147 extern struct isakmp_cfg_config isakmp_cfg_config;
    148 
    149 /*
    150  * ISAKMP mode config state
    151  */
    152 #define LOGINLEN 31
    153 struct isakmp_cfg_state {
    154 	int flags;			/* See below */
    155 	unsigned int port;		/* address index */
    156 	char login[LOGINLEN + 1];	/* login */
    157 	struct in_addr addr4;		/* IPv4 address */
    158 	struct in_addr mask4;		/* IPv4 netmask */
    159 	struct in_addr dns4[MAXNS];	/* IPv4 DNS (when client only) */
    160 	int dns4_index;			/* Number of IPv4 DNS (client only) */
    161 	struct in_addr wins4[MAXWINS];	/* IPv4 WINS (when client only) */
    162 	int wins4_index;		/* Number of IPv4 WINS (client only) */
    163 	char default_domain[MAXPATHLEN + 1];	/* Default domain recieved */
    164 	struct unity_netentry
    165 	    *split_include; 		/* UNITY_SPLIT_INCLUDE */
    166 	int include_count;		/* Number of SPLIT_INCLUDES */
    167 	struct unity_netentry
    168 	    *split_local;		/* UNITY_LOCAL_LAN */
    169 	int local_count;		/* Number of SPLIT_LOCAL */
    170 	struct xauth_state xauth;	/* Xauth state, if revelant */
    171 	struct isakmp_ivm *ivm;		/* XXX Use iph1's ivm? */
    172 	u_int32_t last_msgid;           /* Last message-ID */
    173 };
    174 
    175 /* flags */
    176 #define ISAKMP_CFG_VENDORID_XAUTH	0x01	/* Supports Xauth */
    177 #define ISAKMP_CFG_VENDORID_UNITY	0x02	/* Cisco Unity compliant */
    178 #define ISAKMP_CFG_PORT_ALLOCATED	0x04	/* Port allocated */
    179 #define ISAKMP_CFG_ADDR4_EXTERN		0x08	/* Address from external config  */
    180 #define ISAKMP_CFG_MASK4_EXTERN		0x10	/* Netmask from external config */
    181 #define ISAKMP_CFG_ADDR4_LOCAL		0x20	/* Address from local pool */
    182 #define ISAKMP_CFG_MASK4_LOCAL		0x40	/* Netmask from local pool */
    183 #define ISAKMP_CFG_GOT_ADDR4		0x80	/* Client got address */
    184 #define ISAKMP_CFG_GOT_MASK4		0x100	/* Client got mask */
    185 #define ISAKMP_CFG_GOT_DNS4		0x200	/* Client got DNS */
    186 #define ISAKMP_CFG_GOT_WINS4		0x400	/* Client got WINS */
    187 #define ISAKMP_CFG_DELETE_PH1		0x800	/* phase 1 should be deleted */
    188 #define ISAKMP_CFG_GOT_DEFAULT_DOMAIN	0x1000	/* Client got default domain */
    189 #define ISAKMP_CFG_GOT_SPLIT_INCLUDE	0x2000	/* Client got a split network config */
    190 #define ISAKMP_CFG_GOT_SPLIT_LOCAL	0x4000	/* Client got a split LAN config */
    191 
    192 struct isakmp_pl_attr;
    193 struct ph1handle;
    194 struct isakmp_ivm;
    195 void isakmp_cfg_r(struct ph1handle *, vchar_t *);
    196 int isakmp_cfg_attr_r(struct ph1handle *, u_int32_t, struct isakmp_pl_attr *);
    197 int isakmp_cfg_reply(struct ph1handle *, struct isakmp_pl_attr *);
    198 int isakmp_cfg_request(struct ph1handle *, struct isakmp_pl_attr *);
    199 int isakmp_cfg_set(struct ph1handle *, struct isakmp_pl_attr *);
    200 int isakmp_cfg_send(struct ph1handle *, vchar_t *, u_int32_t, int, int);
    201 struct isakmp_ivm *isakmp_cfg_newiv(struct ph1handle *, u_int32_t);
    202 void isakmp_cfg_rmstate(struct ph1handle *);
    203 struct isakmp_cfg_state *isakmp_cfg_mkstate(void);
    204 vchar_t *isakmp_cfg_copy(struct ph1handle *, struct isakmp_data *);
    205 vchar_t *isakmp_cfg_short(struct ph1handle *, struct isakmp_data *, int);
    206 vchar_t *isakmp_cfg_varlen(struct ph1handle *, struct isakmp_data *, char *, size_t);
    207 vchar_t *isakmp_cfg_string(struct ph1handle *, struct isakmp_data *, char *);
    208 int isakmp_cfg_getconfig(struct ph1handle *);
    209 int isakmp_cfg_setenv(struct ph1handle *, char ***, int *);
    210 
    211 int isakmp_cfg_resize_pool(int);
    212 int isakmp_cfg_getport(struct ph1handle *);
    213 int isakmp_cfg_putport(struct ph1handle *, unsigned int);
    214 int isakmp_cfg_init(int);
    215 #define ISAKMP_CFG_INIT_COLD	1
    216 #define ISAKMP_CFG_INIT_WARM	0
    217 
    218 #ifdef HAVE_LIBRADIUS
    219 struct rad_handle;
    220 extern struct rad_handle *radius_acct_state;
    221 int isakmp_cfg_radius_common(struct rad_handle *, int);
    222 #endif
    223 
    224 #ifdef HAVE_LIBPAM
    225 int isakmp_cfg_accounting_pam(int, int);
    226 void cleanup_pam(int);
    227 #endif
    228 
    229 int isakmp_cfg_accounting_system(int, struct sockaddr *, char *, int);
    230