170 lines
4.8 KiB
C
170 lines
4.8 KiB
C
/* $OpenBSD: rad.h,v 1.26 2024/04/23 22:11:59 florian Exp $ */
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/*
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* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
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* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
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* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define _PATH_CONF_FILE "/etc/rad.conf"
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#define _PATH_RAD_SOCKET "/var/run/rad.sock"
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#define RAD_USER "_rad"
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#define OPT_VERBOSE 0x00000001
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#define OPT_VERBOSE2 0x00000002
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#define OPT_NOACTION 0x00000004
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#define MAX_RTR_ADV_INTERVAL 600
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#define MIN_RTR_ADV_INTERVAL 200
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#define ADV_DEFAULT_LIFETIME 3 * MAX_RTR_ADV_INTERVAL
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#define ADV_PREFERRED_LIFETIME 2700 /* 45 minutes */
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#define ADV_VALID_LIFETIME 5400 /* 90 minutes */
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#define MAX_RA_DELAY_TIME 500 /* 500 milliseconds */
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#define MIN_DELAY_BETWEEN_RAS 3 /* 3 seconds */
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#define MAX_SEARCH 1025 /* MAXDNAME in arpa/nameser.h */
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#define DEFAULT_RDNS_LIFETIME 600 * 1.5
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#define IMSG_DATA_SIZE(imsg) ((imsg).hdr.len - IMSG_HEADER_SIZE)
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struct imsgev {
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struct imsgbuf ibuf;
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void (*handler)(int, short, void *);
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struct event ev;
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short events;
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};
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enum imsg_type {
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IMSG_NONE,
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IMSG_CTL_LOG_VERBOSE,
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IMSG_CTL_RELOAD,
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IMSG_RECONF_CONF,
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IMSG_RECONF_RA_IFACE,
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IMSG_RECONF_RA_AUTOPREFIX,
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IMSG_RECONF_RA_PREFIX,
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IMSG_RECONF_RA_RDNSS,
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IMSG_RECONF_RA_DNSSL,
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IMSG_RECONF_RA_PREF64,
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IMSG_RECONF_END,
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IMSG_ICMP6SOCK,
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IMSG_OPEN_ICMP6SOCK,
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IMSG_ROUTESOCK,
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IMSG_CONTROLFD,
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IMSG_STARTUP,
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IMSG_RA_RS,
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IMSG_SEND_RA,
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IMSG_UPDATE_IF,
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IMSG_REMOVE_IF,
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IMSG_SOCKET_IPC
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};
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/* RFC 8106 */
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struct ra_rdnss_conf {
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SIMPLEQ_ENTRY(ra_rdnss_conf) entry;
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struct in6_addr rdnss;
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};
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struct ra_dnssl_conf {
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SIMPLEQ_ENTRY(ra_dnssl_conf) entry;
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char search[MAX_SEARCH];
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};
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/* RFC 8781 Section 4 */
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struct ra_pref64_conf {
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SIMPLEQ_ENTRY(ra_pref64_conf) entry;
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struct in6_addr prefix; /* prefix */
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int prefixlen; /* prefix length */
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uint32_t ltime; /* lifetime */
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};
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/* RFC 4861 Sections 4.2 and 4.6.4 */
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struct ra_options_conf {
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int dfr; /* is default router? */
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int cur_hl; /* current hop limit */
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int m_flag; /* managed address conf flag */
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int o_flag; /* other conf flag */
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int rtpref; /* router preference */
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int router_lifetime; /* default router lifetime */
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uint32_t reachable_time;
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uint32_t retrans_timer;
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uint32_t mtu;
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uint32_t rdns_lifetime;
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SIMPLEQ_HEAD(, ra_rdnss_conf) ra_rdnss_list;
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int rdnss_count;
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SIMPLEQ_HEAD(, ra_dnssl_conf) ra_dnssl_list;
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int dnssl_len;
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SIMPLEQ_HEAD(, ra_pref64_conf) ra_pref64_list;
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};
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/* RFC 4861 Section 4.6.2 */
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struct ra_prefix_conf {
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SIMPLEQ_ENTRY(ra_prefix_conf) entry;
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struct in6_addr prefix; /* prefix */
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int prefixlen; /* prefix length */
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uint32_t vltime; /* valid lifetime */
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uint32_t pltime; /* preferred lifetime */
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int lflag; /* on-link flag*/
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int aflag; /* autonom. addr flag */
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};
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struct ra_iface_conf {
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SIMPLEQ_ENTRY(ra_iface_conf) entry;
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struct ra_options_conf ra_options;
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struct ra_prefix_conf *autoprefix;
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SIMPLEQ_HEAD(ra_prefix_conf_head,
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ra_prefix_conf) ra_prefix_list;
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char name[IF_NAMESIZE];
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};
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struct rad_conf {
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struct ra_options_conf ra_options;
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SIMPLEQ_HEAD(ra_iface_conf_head, ra_iface_conf) ra_iface_list;
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};
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struct imsg_ra_rs {
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uint32_t if_index;
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struct sockaddr_in6 from;
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ssize_t len;
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uint8_t packet[1500];
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};
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struct imsg_send_ra {
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uint32_t if_index;
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struct sockaddr_in6 to;
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};
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extern uint32_t cmd_opts;
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/* rad.c */
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int main_imsg_compose_frontend(int, int, void *, uint16_t);
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void main_imsg_compose_engine(int, pid_t, void *, uint16_t);
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void merge_config(struct rad_conf *, struct rad_conf *);
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void imsg_event_add(struct imsgev *);
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int imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t,
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int, void *, uint16_t);
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struct rad_conf *config_new_empty(void);
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void config_clear(struct rad_conf *);
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void free_ra_iface_conf(struct ra_iface_conf *);
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void free_dns_options(struct ra_options_conf *);
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void mask_prefix(struct in6_addr*, int len);
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const char *sin6_to_str(struct sockaddr_in6 *);
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const char *in6_to_str(struct in6_addr *);
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/* printconf.c */
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void print_config(struct rad_conf *);
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/* parse.y */
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struct rad_conf *parse_config(char *);
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int cmdline_symset(char *);
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