ha_config.h

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/* $Id: ha_config.h,v 1.19 2001/09/23 14:19:30 jm Exp $
 * Home Agent - configuration reading routines
 *
 * Dynamic hierarchial IP tunnel
 * Copyright (C) 1998-2001, Dynamics group
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. See README and COPYING for
 * more details.
 */

#ifndef HA_CONFIG_H
#define HA_CONFIG_H

#include <net/if.h>
#include <netinet/in.h>
#include <sys/time.h>
#include "list.h"
#include "message.h"

#define MAXFILENAMELEN                      256
#define MAXSHAREDSECRETLEN                  32
#define MAXOWNERNAMELEN                     8
#define MAXGROUPNAMELEN                     8

#define HA_DEFAULT_MAX_BINDINGS             20
#define HA_DEFAULT_TUNNEL_LIFETIME          500
#define HA_DEFAULT_REG_ERROR_REPLY_INTERVAL 10
#define HA_DEFAULT_SYSLOG_FACILITY          LOG_LOCAL0

/* default port to listen for registration requests */
#define HA_DEFAULT_REG_PORT                 434

#define HA_MOBILE_HASHTABLE_SIZE            256

#define MAXMSG 2048


#define HASH_METHOD_NONE 0
#define HASH_METHOD_CHECK 1
#define HASH_METHOD_REQUIRE 2

enum {
        INTERFACE_AGENTADV_ONLY_SOLICITED = 0,
        INTERFACE_AGENTADV_ALL = 1,
        INTERFACE_AGENTADV_NONE = -1 
};

struct interface_entry {
        struct node node;

        /* data from dynhad.conf */
        char dev[IFNAMSIZ + 1];
        int ha_disc; /* allow dynamics HA discovery */
        int agentadv; /* whether to send agent advertisements or not */
        int interval; /* interval to send advertisements */
        struct in_addr force_addr; /* which source address to use if multiple
                                    * addresses available for interface */

        /* other data */
        int if_index;
        struct in_addr addr; /* local address to be used for this interface */
        struct in_addr bcaddr; /* broadcast address of this interfaced; used
                                * used with HA discovery */
        struct timeval last_adv;
        int icmp_sock, udp_sock, udp_bc_sock, udp_bc_sock2;
};

struct ha_config {
        int max_bindings;
        int ha_default_tunnel_lifetime;
        int reg_error_reply_interval;
        struct list spi_list;        /* struct spi_entry */
        struct list authorized_list; /* struct authorized_entry */
        struct list fa_spi_list;     /* struct fa_spi_entry */
        struct list interfaces;      /* struct interface_entry */
        int syslog_facility;
        char ha_api_read_socket_path[MAXFILENAMELEN + 1];
        char ha_api_read_socket_group[MAXGROUPNAMELEN + 1];
        char ha_api_read_socket_owner[MAXOWNERNAMELEN + 1];
        int ha_api_read_socket_permissions;
        char ha_api_admin_socket_path[MAXFILENAMELEN + 1];
        char ha_api_admin_socket_group[MAXGROUPNAMELEN + 1];
        char ha_api_admin_socket_owner[MAXOWNERNAMELEN + 1];
        int ha_api_admin_socket_permissions;
        int udpport;
        int socket_priority;
        int enable_triangle_tunneling;
        int enable_reverse_tunneling;
        int pubkey_hash_method;
        char dhcp_if[MAXFILENAMELEN + 1];
        char ha_nai[MAX_NAI_LEN + 1];
        int ha_nai_len;
        struct in_addr sha_addr;
        __u32 priv_ha;
};

struct spi_entry {
        struct node node;
        int spi;
        int auth_alg;
        int replay_method;
        int timestamp_tolerance;
        int max_lifetime;
        unsigned char shared_secret[MAXSHAREDSECRETLEN];
        int shared_secret_len;
};

struct authorized_entry {
        struct node node;
        int spi_low;
        int spi_high;
        struct in_addr network;
        struct in_addr netmask;
};

struct fa_spi_entry {
        struct node node;
        int spi;
        struct in_addr addr;
        int alg;
        unsigned char shared_secret[MAXSHAREDSECRETLEN];
        int shared_secret_len;
};

int load_config(struct ha_config *ha, char *program_name, char *config_file);
void cleanup_config(struct ha_config *cfg);

#endif /* HA_CONFIG_H */

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