mirror of
https://gitlab.nic.cz/labs/bird.git
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300 lines
8.5 KiB
Plaintext
300 lines
8.5 KiB
Plaintext
/*
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* BIRD -- Router Advertisement Configuration
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*
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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CF_HDR
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#include "proto/radv/radv.h"
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CF_DEFINES
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#define RADV_CFG ((struct radv_config *) this_proto)
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#define RADV_IFACE ((struct radv_iface_config *) this_ipatt)
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#define RADV_PREFIX this_radv_prefix
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#define RADV_RDNSS (&this_radv_rdnss)
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#define RADV_DNSSL (&this_radv_dnssl)
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static struct radv_prefix_config *this_radv_prefix;
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static struct radv_rdnss_config this_radv_rdnss;
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static struct radv_dnssl_config this_radv_dnssl;
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static list radv_dns_list; /* Used by radv_rdnss and radv_dnssl */
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static u8 radv_mult_val; /* Used by radv_mult for second return value */
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CF_DECLS
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CF_KEYWORDS(RADV, PREFIX, INTERFACE, MIN, MAX, RA, DELAY, INTERVAL,
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MANAGED, OTHER, CONFIG, LINK, MTU, REACHABLE, TIME, RETRANS,
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TIMER, CURRENT, HOP, LIMIT, DEFAULT, VALID, PREFERRED, MULT,
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LIFETIME, SKIP, ONLINK, AUTONOMOUS, RDNSS, DNSSL, NS, DOMAIN,
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LOCAL, TRIGGER, SENSITIVE)
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%type<i> radv_mult radv_sensitive
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CF_GRAMMAR
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CF_ADDTO(proto, radv_proto)
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radv_proto_start: proto_start RADV
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{
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this_proto = proto_config_new(&proto_radv, sizeof(struct radv_config), $1);
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init_list(&RADV_CFG->patt_list);
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init_list(&RADV_CFG->pref_list);
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init_list(&RADV_CFG->rdnss_list);
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init_list(&RADV_CFG->dnssl_list);
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};
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radv_proto_item:
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proto_item
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| INTERFACE radv_iface
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| PREFIX radv_prefix { add_tail(&RADV_CFG->pref_list, NODE this_radv_prefix); }
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| RDNSS { init_list(&radv_dns_list); } radv_rdnss { add_tail_list(&RADV_CFG->rdnss_list, &radv_dns_list); }
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| DNSSL { init_list(&radv_dns_list); } radv_dnssl { add_tail_list(&RADV_CFG->dnssl_list, &radv_dns_list); }
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| TRIGGER prefix {
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RADV_CFG->trigger_prefix = $2.addr;
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RADV_CFG->trigger_pxlen = $2.len;
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RADV_CFG->trigger_valid = 1;
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}
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;
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radv_proto_opts:
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/* empty */
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| radv_proto_opts radv_proto_item ';'
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;
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radv_proto:
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radv_proto_start proto_name '{' radv_proto_opts '}';
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radv_iface_start:
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{
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this_ipatt = cfg_allocz(sizeof(struct radv_iface_config));
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add_tail(&RADV_CFG->patt_list, NODE this_ipatt);
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init_list(&this_ipatt->ipn_list);
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init_list(&RADV_IFACE->pref_list);
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init_list(&RADV_IFACE->rdnss_list);
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init_list(&RADV_IFACE->dnssl_list);
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RADV_IFACE->min_ra_int = -1; /* undefined */
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RADV_IFACE->max_ra_int = DEFAULT_MAX_RA_INT;
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RADV_IFACE->min_delay = DEFAULT_MIN_DELAY;
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RADV_IFACE->current_hop_limit = DEFAULT_CURRENT_HOP_LIMIT;
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RADV_IFACE->default_lifetime = -1;
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RADV_IFACE->default_lifetime_sensitive = 1;
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};
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radv_iface_item:
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MIN RA INTERVAL expr { RADV_IFACE->min_ra_int = $4; if ($4 < 3) cf_error("Min RA interval must be at least 3"); }
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| MAX RA INTERVAL expr { RADV_IFACE->max_ra_int = $4; if (($4 < 4) || ($4 > 1800)) cf_error("Max RA interval must be in range 4-1800"); }
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| MIN DELAY expr { RADV_IFACE->min_delay = $3; if ($3 <= 0) cf_error("Min delay must be positive"); }
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| MANAGED bool { RADV_IFACE->managed = $2; }
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| OTHER CONFIG bool { RADV_IFACE->other_config = $3; }
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| LINK MTU expr { RADV_IFACE->link_mtu = $3; if ($3 < 0) cf_error("Link MTU must be 0 or positive"); }
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| REACHABLE TIME expr { RADV_IFACE->reachable_time = $3; if (($3 < 0) || ($3 > 3600000)) cf_error("Reachable time must be in range 0-3600000"); }
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| RETRANS TIMER expr { RADV_IFACE->retrans_timer = $3; if ($3 < 0) cf_error("Retrans timer must be 0 or positive"); }
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| CURRENT HOP LIMIT expr { RADV_IFACE->current_hop_limit = $4; if (($4 < 0) || ($4 > 255)) cf_error("Current hop limit must be in range 0-255"); }
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| DEFAULT LIFETIME expr radv_sensitive {
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RADV_IFACE->default_lifetime = $3;
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if (($3 < 0) || ($3 > 9000)) cf_error("Default lifetime must be in range 0-9000");
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if ($4 != -1) RADV_IFACE->default_lifetime_sensitive = $4;
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}
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| PREFIX radv_prefix { add_tail(&RADV_IFACE->pref_list, NODE this_radv_prefix); }
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| RDNSS { init_list(&radv_dns_list); } radv_rdnss { add_tail_list(&RADV_IFACE->rdnss_list, &radv_dns_list); }
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| DNSSL { init_list(&radv_dns_list); } radv_dnssl { add_tail_list(&RADV_IFACE->dnssl_list, &radv_dns_list); }
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| RDNSS LOCAL bool { RADV_IFACE->rdnss_local = $3; }
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| DNSSL LOCAL bool { RADV_IFACE->dnssl_local = $3; }
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;
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radv_iface_finish:
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{
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struct radv_iface_config *ic = RADV_IFACE;
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if (ic->min_ra_int == (u32) -1)
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ic->min_ra_int = MAX_(ic->max_ra_int / 3, 3);
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if (ic->default_lifetime == (u32) -1)
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ic->default_lifetime = 3 * ic->max_ra_int;
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if ((ic->min_ra_int > 3) &&
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(ic->min_ra_int > (ic->max_ra_int * 3 / 4)))
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cf_error("Min RA interval must be at most 3/4 * Max RA interval %d %d", ic->min_ra_int, ic->max_ra_int);
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if ((ic->default_lifetime > 0) && (ic->default_lifetime < ic->max_ra_int))
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cf_error("Default lifetime must be either 0 or at least Max RA interval");
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};
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radv_iface_opts:
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/* empty */
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| radv_iface_opts radv_iface_item ';'
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;
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radv_iface_opt_list:
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/* empty */
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| '{' radv_iface_opts '}'
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;
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radv_iface:
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radv_iface_start iface_patt_list radv_iface_opt_list radv_iface_finish;
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radv_prefix_start: prefix
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{
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this_radv_prefix = cfg_allocz(sizeof(struct radv_prefix_config));
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RADV_PREFIX->prefix = $1.addr;
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RADV_PREFIX->pxlen = $1.len;
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RADV_PREFIX->onlink = 1;
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RADV_PREFIX->autonomous = 1;
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RADV_PREFIX->valid_lifetime = DEFAULT_VALID_LIFETIME;
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RADV_PREFIX->preferred_lifetime = DEFAULT_PREFERRED_LIFETIME;
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};
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radv_prefix_item:
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SKIP bool { RADV_PREFIX->skip = $2; }
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| ONLINK bool { RADV_PREFIX->onlink = $2; }
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| AUTONOMOUS bool { RADV_PREFIX->autonomous = $2; }
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| VALID LIFETIME expr radv_sensitive {
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RADV_PREFIX->valid_lifetime = $3;
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if ($3 < 0) cf_error("Valid lifetime must be 0 or positive");
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if ($4 != -1) RADV_PREFIX->valid_lifetime_sensitive = $4;
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}
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| PREFERRED LIFETIME expr radv_sensitive {
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RADV_PREFIX->preferred_lifetime = $3;
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if ($3 < 0) cf_error("Preferred lifetime must be 0 or positive");
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if ($4 != -1) RADV_PREFIX->preferred_lifetime_sensitive = $4;
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}
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;
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radv_prefix_finish:
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{
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if (RADV_PREFIX->preferred_lifetime > RADV_PREFIX->valid_lifetime)
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cf_error("Preferred lifetime must be at most Valid lifetime");
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if (RADV_PREFIX->valid_lifetime_sensitive > RADV_PREFIX->preferred_lifetime_sensitive)
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cf_error("Valid lifetime sensitive requires that Preferred lifetime is sensitive too");
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};
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radv_prefix_opts:
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/* empty */
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| radv_prefix_opts radv_prefix_item ';'
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;
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radv_prefix_opt_list:
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/* empty */
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| '{' radv_prefix_opts '}'
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;
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radv_prefix:
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radv_prefix_start radv_prefix_opt_list radv_prefix_finish;
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radv_rdnss_node: ipa
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{
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struct radv_rdnss_config *cf = cfg_allocz(sizeof(struct radv_rdnss_config));
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add_tail(&radv_dns_list, NODE cf);
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cf->server = $1;
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cf->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
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};
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radv_rdnss_start:
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{
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RADV_RDNSS->lifetime = 0;
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RADV_RDNSS->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
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};
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radv_rdnss_item:
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| NS radv_rdnss_node
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| LIFETIME radv_mult { RADV_RDNSS->lifetime = $2; RADV_RDNSS->lifetime_mult = radv_mult_val; }
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;
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radv_rdnss_finish:
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{
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if (EMPTY_LIST(radv_dns_list))
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cf_error("No nameserver in RDNSS section");
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struct radv_rdnss_config *cf;
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WALK_LIST(cf, radv_dns_list)
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{
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cf->lifetime = RADV_RDNSS->lifetime;
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cf->lifetime_mult = RADV_RDNSS->lifetime_mult;
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}
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};
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radv_rdnss_opts:
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/* empty */
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| radv_rdnss_opts radv_rdnss_item ';'
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;
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radv_rdnss:
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radv_rdnss_node
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| '{' radv_rdnss_start radv_rdnss_opts '}' radv_rdnss_finish
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;
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radv_dnssl_node: TEXT
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{
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struct radv_dnssl_config *cf = cfg_allocz(sizeof(struct radv_dnssl_config));
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add_tail(&radv_dns_list, NODE cf);
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cf->domain = $1;
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cf->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
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if (radv_process_domain(cf) < 0)
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cf_error("Invalid domain dame");
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};
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radv_dnssl_start:
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{
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RADV_DNSSL->lifetime = 0;
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RADV_DNSSL->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
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};
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radv_dnssl_item:
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| DOMAIN radv_dnssl_node
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| LIFETIME radv_mult { RADV_DNSSL->lifetime = $2; RADV_DNSSL->lifetime_mult = radv_mult_val; }
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;
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radv_dnssl_finish:
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{
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if (EMPTY_LIST(radv_dns_list))
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cf_error("No domain in DNSSL section");
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struct radv_dnssl_config *cf;
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WALK_LIST(cf, radv_dns_list)
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{
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cf->lifetime = RADV_DNSSL->lifetime;
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cf->lifetime_mult = RADV_DNSSL->lifetime_mult;
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}
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};
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radv_dnssl_opts:
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/* empty */
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| radv_dnssl_opts radv_dnssl_item ';'
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;
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radv_dnssl:
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radv_dnssl_node
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| '{' radv_dnssl_start radv_dnssl_opts '}' radv_dnssl_finish
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;
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radv_mult:
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expr { $$ = $1; radv_mult_val = 0; }
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| MULT expr { $$ = 0; radv_mult_val = $2; if (($2 < 1) || ($2 > 254)) cf_error("Multiplier must be in range 1-254"); }
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;
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radv_sensitive:
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/* empty */ { $$ = -1; }
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| SENSITIVE bool { $$ = $2; }
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;
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CF_CODE
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CF_END
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