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/* $OpenBSD: rad.h,v 1.23 2022/10/15 13:26:15 florian Exp $ */
/*
* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define _PATH_CONF_FILE "/etc/rad.conf"
#define _PATH_RAD_SOCKET "/var/run/rad.sock"
#define RAD_USER "_rad"
#define OPT_VERBOSE 0x00000001
#define OPT_VERBOSE2 0x00000002
#define OPT_NOACTION 0x00000004
#define MAX_RTR_ADV_INTERVAL 600
#define MIN_RTR_ADV_INTERVAL 200
#define ADV_DEFAULT_LIFETIME 3 * MAX_RTR_ADV_INTERVAL
#define ADV_PREFERRED_LIFETIME 604800 /* 7 days */
#define ADV_VALID_LIFETIME 2592000 /* 30 days */
#define MAX_RA_DELAY_TIME 500 /* 500 milliseconds */
#define MIN_DELAY_BETWEEN_RAS 3 /* 3 seconds */
#define MAX_SEARCH 1025 /* MAXDNAME in arpa/nameser.h */
#define DEFAULT_RDNS_LIFETIME 600 * 1.5
#define IMSG_DATA_SIZE(imsg) ((imsg).hdr.len - IMSG_HEADER_SIZE)
struct imsgev {
struct imsgbuf ibuf;
void (*handler)(int, short, void *);
struct event ev;
short events;
};
enum imsg_type {
IMSG_NONE,
IMSG_CTL_LOG_VERBOSE,
IMSG_CTL_RELOAD,
IMSG_RECONF_CONF,
IMSG_RECONF_RA_IFACE,
IMSG_RECONF_RA_AUTOPREFIX,
IMSG_RECONF_RA_PREFIX,
IMSG_RECONF_RA_RDNSS,
IMSG_RECONF_RA_DNSSL,
IMSG_RECONF_RA_PREF64,
IMSG_RECONF_END,
IMSG_ICMP6SOCK,
IMSG_OPEN_ICMP6SOCK,
IMSG_ROUTESOCK,
IMSG_CONTROLFD,
IMSG_STARTUP,
IMSG_RA_RS,
IMSG_SEND_RA,
IMSG_UPDATE_IF,
IMSG_REMOVE_IF,
IMSG_SOCKET_IPC
};
/* RFC 8106 */
struct ra_rdnss_conf {
SIMPLEQ_ENTRY(ra_rdnss_conf) entry;
struct in6_addr rdnss;
};
struct ra_dnssl_conf {
SIMPLEQ_ENTRY(ra_dnssl_conf) entry;
char search[MAX_SEARCH];
};
/* RFC 8781 Section 4 */
struct ra_pref64_conf {
SIMPLEQ_ENTRY(ra_pref64_conf) entry;
struct in6_addr prefix; /* prefix */
int prefixlen; /* prefix length */
uint32_t ltime; /* lifetime */
};
/* RFC 4861 Sections 4.2 and 4.6.4 */
struct ra_options_conf {
int dfr; /* is default router? */
int cur_hl; /* current hop limit */
int m_flag; /* managed address conf flag */
int o_flag; /* other conf flag */
int router_lifetime; /* default router lifetime */
uint32_t reachable_time;
uint32_t retrans_timer;
uint32_t mtu;
uint32_t rdns_lifetime;
SIMPLEQ_HEAD(, ra_rdnss_conf) ra_rdnss_list;
int rdnss_count;
SIMPLEQ_HEAD(, ra_dnssl_conf) ra_dnssl_list;
int dnssl_len;
SIMPLEQ_HEAD(, ra_pref64_conf) ra_pref64_list;
};
/* RFC 4861 Section 4.6.2 */
struct ra_prefix_conf {
SIMPLEQ_ENTRY(ra_prefix_conf) entry;
struct in6_addr prefix; /* prefix */
int prefixlen; /* prefix length */
uint32_t vltime; /* valid lifetime */
uint32_t pltime; /* prefered lifetime */
int lflag; /* on-link flag*/
int aflag; /* autonom. addr flag */
};
struct ra_iface_conf {
SIMPLEQ_ENTRY(ra_iface_conf) entry;
struct ra_options_conf ra_options;
struct ra_prefix_conf *autoprefix;
SIMPLEQ_HEAD(ra_prefix_conf_head,
ra_prefix_conf) ra_prefix_list;
char name[IF_NAMESIZE];
};
struct rad_conf {
struct ra_options_conf ra_options;
SIMPLEQ_HEAD(ra_iface_conf_head, ra_iface_conf) ra_iface_list;
};
struct imsg_ra_rs {
uint32_t if_index;
struct sockaddr_in6 from;
ssize_t len;
uint8_t packet[1500];
};
struct imsg_send_ra {
uint32_t if_index;
struct sockaddr_in6 to;
};
extern uint32_t cmd_opts;
/* rad.c */
int main_imsg_compose_frontend(int, int, void *, uint16_t);
void main_imsg_compose_engine(int, pid_t, void *, uint16_t);
void merge_config(struct rad_conf *, struct rad_conf *);
void imsg_event_add(struct imsgev *);
int imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t,
int, void *, uint16_t);
struct rad_conf *config_new_empty(void);
void config_clear(struct rad_conf *);
void free_ra_iface_conf(struct ra_iface_conf *);
void free_dns_options(struct ra_options_conf *);
void mask_prefix(struct in6_addr*, int len);
const char *sin6_to_str(struct sockaddr_in6 *);
const char *in6_to_str(struct in6_addr *);
/* printconf.c */
void print_config(struct rad_conf *);
/* parse.y */
struct rad_conf *parse_config(char *);
int cmdline_symset(char *);
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