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1
/*
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 *	BIRD -- OSPF Configuration
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 *
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 *	(c) 1999--2004 Ondrej Filip <feela@network.cz>
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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/ospf/ospf.h"
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CF_DEFINES
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#define OSPF_CFG ((struct ospf_config *) this_proto)
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#define OSPF_PATT ((struct ospf_iface_patt *) this_ipatt)
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static struct ospf_area_config *this_area;
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static struct nbma_node *this_nbma;
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static list *this_nets;
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static struct area_net_config *this_pref;
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static struct ospf_stubnet_config *this_stubnet; 
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#ifdef OSPFv2
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static void
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ospf_iface_finish(void)
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{
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  struct ospf_iface_patt *ip = OSPF_PATT;
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  if (ip->deadint == 0)
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    ip->deadint = ip->deadc * ip->helloint;
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  ip->passwords = get_passwords();
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  if ((ip->autype == OSPF_AUTH_CRYPT) && (ip->helloint < 5))
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    log(L_WARN "Hello or poll interval less that 5 makes cryptographic authenication prone to replay attacks");
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  if ((ip->autype == OSPF_AUTH_NONE) && (ip->passwords != NULL))
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    log(L_WARN "Password option without authentication option does not make sense");
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}
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#endif
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#ifdef OSPFv3
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static void
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ospf_iface_finish(void)
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{
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  struct ospf_iface_patt *ip = OSPF_PATT;
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  if (ip->deadint == 0)
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    ip->deadint = ip->deadc * ip->helloint;
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  if ((ip->autype != OSPF_AUTH_NONE) || (get_passwords() != NULL))
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    cf_error("Authentication not supported in OSPFv3");
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}
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#endif
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static void
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ospf_area_finish(void)
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{
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  if ((this_area->areaid == 0) && (this_area->type != OPT_E))
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    cf_error("Backbone area cannot be stub/NSSA");
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  if (this_area->summary && (this_area->type == OPT_E))
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    cf_error("Only Stub/NSSA areas can use summary propagation");
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  if (this_area->default_nssa && ((this_area->type != OPT_N) || ! this_area->summary))
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    cf_error("Only NSSA areas with summary propagation can use NSSA default route");
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  if ((this_area->default_cost & LSA_EXT_EBIT) && ! this_area->default_nssa)
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    cf_error("Only NSSA default route can use type 2 metric");
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}
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static void
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ospf_proto_finish(void)
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{
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  struct ospf_config *cf = OSPF_CFG;
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  if (EMPTY_LIST(cf->area_list))
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    cf_error( "No configured areas in OSPF");
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  int areano = 0;
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  int backbone = 0;
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  struct ospf_area_config *ac;
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  WALK_LIST(ac, cf->area_list)
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  {
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    areano++;
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    if (ac->areaid == 0)
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     backbone = 1;
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  }
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  cf->abr = areano > 1;
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  if (cf->abr && !backbone)
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  {
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    struct ospf_area_config *ac = cfg_allocz(sizeof(struct ospf_area_config));
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    ac->type = OPT_E; /* Backbone is non-stub */
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    add_head(&cf->area_list, NODE ac);
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    init_list(&ac->patt_list);
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    init_list(&ac->net_list);
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    init_list(&ac->enet_list);
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    init_list(&ac->stubnet_list);
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  }
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  if (!cf->abr && !EMPTY_LIST(cf->vlink_list))
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    cf_error( "Vlinks cannot be used on single area router");
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}
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static inline void
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check_defcost(int cost)
109
{
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  if ((cost <= 0) || (cost >= LSINFINITY))
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   cf_error("Default cost must be in range 1-%d", LSINFINITY-1);
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}
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static inline void
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set_instance_id(unsigned id)
116
{
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#ifdef OSPFv3
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  OSPF_PATT->instance_id = id;
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#else
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  cf_error("Instance ID requires OSPFv3");
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#endif
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}
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CF_DECLS
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CF_KEYWORDS(OSPF, AREA, OSPF_METRIC1, OSPF_METRIC2, OSPF_TAG, OSPF_ROUTER_ID)
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CF_KEYWORDS(NEIGHBORS, RFC1583COMPAT, STUB, TICK, COST, COST2, RETRANSMIT)
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CF_KEYWORDS(HELLO, TRANSMIT, PRIORITY, DEAD, TYPE, BROADCAST, BCAST)
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CF_KEYWORDS(NONBROADCAST, NBMA, POINTOPOINT, PTP, POINTOMULTIPOINT, PTMP)
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CF_KEYWORDS(NONE, SIMPLE, AUTHENTICATION, STRICT, CRYPTOGRAPHIC)
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CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, CHECK, LINK)
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CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL, STUBNET, HIDDEN, SUMMARY, TAG, EXTERNAL)
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CF_KEYWORDS(WAIT, DELAY, LSADB, ECMP, LIMIT, WEIGHT, NSSA, TRANSLATOR, STABILITY)
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CF_KEYWORDS(GLOBAL, LSID, ROUTER, SELF, INSTANCE, REAL, NETMASK)
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%type <t> opttext
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%type <ld> lsadb_args
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%type <i> nbma_eligible
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CF_GRAMMAR
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CF_ADDTO(proto, ospf_proto '}' { ospf_proto_finish(); } )
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ospf_proto_start: proto_start OSPF {
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     this_proto = proto_config_new(&proto_ospf, sizeof(struct ospf_config), $1);
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     init_list(&OSPF_CFG->area_list);
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     init_list(&OSPF_CFG->vlink_list);
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     OSPF_CFG->rfc1583 = DEFAULT_RFC1583;
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     OSPF_CFG->tick = DEFAULT_OSPFTICK;
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  }
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 ;
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ospf_proto:
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   ospf_proto_start proto_name '{'
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 | ospf_proto ospf_proto_item ';'
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 ;
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ospf_proto_item:
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   proto_item
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 | RFC1583COMPAT bool { OSPF_CFG->rfc1583 = $2; }
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 | ECMP bool { OSPF_CFG->ecmp = $2 ? DEFAULT_ECMP_LIMIT : 0; }
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 | ECMP bool LIMIT expr { OSPF_CFG->ecmp = $2 ? $4 : 0; if ($4 < 0) cf_error("ECMP limit cannot be negative"); }
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 | TICK expr { OSPF_CFG->tick = $2; if($2<=0) cf_error("Tick must be greater than zero"); }
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 | ospf_area
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 ;
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ospf_area_start: AREA idval {
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  this_area = cfg_allocz(sizeof(struct ospf_area_config));
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  add_tail(&OSPF_CFG->area_list, NODE this_area);
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  this_area->areaid = $2;
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  this_area->default_cost = DEFAULT_STUB_COST;
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  this_area->type = OPT_E;
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  this_area->transint = DEFAULT_TRANSINT;
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  init_list(&this_area->patt_list);
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  init_list(&this_area->net_list);
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  init_list(&this_area->enet_list);
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  init_list(&this_area->stubnet_list);
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 }
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 ;
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ospf_area: ospf_area_start '{' ospf_area_opts '}' { ospf_area_finish(); }
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 ;
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ospf_area_opts:
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   /* empty */
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 | ospf_area_opts ospf_area_item ';'
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 ;
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ospf_area_item:
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   STUB bool { this_area->type = $2 ? 0 : OPT_E; /* We should remove the option */ }
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 | NSSA { this_area->type = OPT_N; }
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 | SUMMARY bool { this_area->summary = $2; }
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 | DEFAULT NSSA bool { this_area->default_nssa = $3; }
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 | DEFAULT COST expr { this_area->default_cost = $3; check_defcost($3); }
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 | DEFAULT COST2 expr { this_area->default_cost = $3 | LSA_EXT_EBIT; check_defcost($3); }
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 | STUB COST expr { this_area->default_cost = $3;  check_defcost($3); }
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 | TRANSLATOR bool { this_area->translator = $2; }
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 | TRANSLATOR STABILITY expr { this_area->transint = $3; }
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 | NETWORKS { this_nets = &this_area->net_list; } '{' pref_list '}'
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 | EXTERNAL { this_nets = &this_area->enet_list; } '{' pref_list '}'
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 | STUBNET ospf_stubnet
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 | INTERFACE ospf_iface
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 | ospf_vlink
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 ;
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ospf_stubnet:
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   ospf_stubnet_start '{' ospf_stubnet_opts '}'
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 | ospf_stubnet_start
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 ;
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ospf_stubnet_start:
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   prefix {
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     this_stubnet = cfg_allocz(sizeof(struct ospf_stubnet_config));
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     add_tail(&this_area->stubnet_list, NODE this_stubnet);
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     this_stubnet->px = $1;
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     this_stubnet->cost = COST_D;
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   } 
219
 ;
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ospf_stubnet_opts:
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   /* empty */
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 | ospf_stubnet_opts ospf_stubnet_item ';'
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 ;
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ospf_stubnet_item:
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   HIDDEN bool { this_stubnet->hidden = $2; }
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 | SUMMARY bool { this_stubnet->summary = $2; }
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 | COST expr { this_stubnet->cost = $2; }
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 ;
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ospf_vlink:
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   ospf_vlink_start ospf_instance_id '{' ospf_vlink_opts '}' { ospf_iface_finish(); }
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 | ospf_vlink_start ospf_instance_id { ospf_iface_finish(); }
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 ;
236

    
237
ospf_vlink_opts:
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   /* empty */
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 | ospf_vlink_opts ospf_vlink_item ';'
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 ;
241

    
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ospf_vlink_item:
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 | HELLO expr { OSPF_PATT->helloint = $2 ; if (($2<=0) || ($2>65535)) cf_error("Hello interval must be in range 1-65535"); }
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 | RETRANSMIT expr { OSPF_PATT->rxmtint = $2 ; if ($2<=0) cf_error("Retransmit int must be greater than zero"); }
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 | TRANSMIT DELAY expr { OSPF_PATT->inftransdelay = $3 ; if (($3<=0) || ($3>65535)) cf_error("Transmit delay must be in range 1-65535"); }
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 | WAIT expr { OSPF_PATT->waitint = $2 ; }
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 | DEAD expr { OSPF_PATT->deadint = $2 ; if ($2<=1) cf_error("Dead interval must be greater than one"); }
248
 | DEAD COUNT expr { OSPF_PATT->deadc = $3 ; if ($3<=1) cf_error("Dead count must be greater than one"); }
249
 | AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
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 | AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
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 | AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
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 | password_list 
253
 ;
254

    
255
ospf_vlink_start: VIRTUAL LINK idval
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 {
257
  if (this_area->areaid == 0) cf_error("Virtual link cannot be in backbone");
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  this_ipatt = cfg_allocz(sizeof(struct ospf_iface_patt));
259
  add_tail(&OSPF_CFG->vlink_list, NODE this_ipatt);
260
  init_list(&this_ipatt->ipn_list);
261
  OSPF_PATT->voa = this_area->areaid;
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  OSPF_PATT->vid = $3;
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  OSPF_PATT->helloint = HELLOINT_D;
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  OSPF_PATT->rxmtint = RXMTINT_D;
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  OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
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  OSPF_PATT->waitint = WAIT_DMH*HELLOINT_D;
267
  OSPF_PATT->deadc = DEADC_D;
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  OSPF_PATT->deadint = 0;
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  OSPF_PATT->type = OSPF_IT_VLINK;
270
  init_list(&OSPF_PATT->nbma_list);
271
  OSPF_PATT->autype = OSPF_AUTH_NONE;
272
  reset_passwords();
273
 }
274
;
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ospf_iface_item:
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   COST expr { OSPF_PATT->cost = $2 ; if (($2<=0) || ($2>65535)) cf_error("Cost must be in range 1-65535"); }
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 | HELLO expr { OSPF_PATT->helloint = $2 ; if (($2<=0) || ($2>65535)) cf_error("Hello interval must be in range 1-65535"); }
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 | POLL expr { OSPF_PATT->pollint = $2 ; if ($2<=0) cf_error("Poll int must be greater than zero"); }
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 | RETRANSMIT expr { OSPF_PATT->rxmtint = $2 ; if ($2<=0) cf_error("Retransmit int must be greater than zero"); }
281
 | WAIT expr { OSPF_PATT->waitint = $2 ; }
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 | DEAD expr { OSPF_PATT->deadint = $2 ; if ($2<=1) cf_error("Dead interval must be greater than one"); }
283
 | DEAD COUNT expr { OSPF_PATT->deadc = $3 ; if ($3<=1) cf_error("Dead count must be greater than one"); }
284
 | TYPE BROADCAST { OSPF_PATT->type = OSPF_IT_BCAST ; }
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 | TYPE BCAST { OSPF_PATT->type = OSPF_IT_BCAST ; }
286
 | TYPE NONBROADCAST { OSPF_PATT->type = OSPF_IT_NBMA ; }
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 | TYPE NBMA { OSPF_PATT->type = OSPF_IT_NBMA ; }
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 | TYPE POINTOPOINT { OSPF_PATT->type = OSPF_IT_PTP ; }
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 | TYPE PTP { OSPF_PATT->type = OSPF_IT_PTP ; }
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 | TYPE POINTOMULTIPOINT { OSPF_PATT->type = OSPF_IT_PTMP ; }
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 | TYPE PTMP { OSPF_PATT->type = OSPF_IT_PTMP ; }
292
 | REAL BROADCAST bool { OSPF_PATT->real_bcast = $3; if (OSPF_VERSION != 2) cf_error("Real broadcast option requires OSPFv2"); }
293
 | PTP NETMASK bool { OSPF_PATT->ptp_netmask = $3; if (OSPF_VERSION != 2) cf_error("Real netmask option requires OSPFv2"); }
294
 | TRANSMIT DELAY expr { OSPF_PATT->inftransdelay = $3 ; if (($3<=0) || ($3>65535)) cf_error("Transmit delay must be in range 1-65535"); }
295
 | PRIORITY expr { OSPF_PATT->priority = $2 ; if (($2<0) || ($2>255)) cf_error("Priority must be in range 0-255"); }
296
 | STRICT NONBROADCAST bool { OSPF_PATT->strictnbma = $3 ; }
297
 | STUB bool { OSPF_PATT->stub = $2 ; }
298
 | CHECK LINK bool { OSPF_PATT->check_link = $3; }
299
 | ECMP WEIGHT expr { OSPF_PATT->ecmp_weight = $3 - 1; if (($3<1) || ($3>256)) cf_error("ECMP weight must be in range 1-256"); }
300
 | NEIGHBORS '{' nbma_list '}'
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 | AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE ; }
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 | AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE ; }
303
 | AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT ; }
304
 | RX BUFFER LARGE { OSPF_PATT->rxbuf = OSPF_RXBUF_LARGE ; } 
305
 | RX BUFFER NORMAL { OSPF_PATT->rxbuf = OSPF_RXBUF_NORMAL ; } 
306
 | RX BUFFER expr { OSPF_PATT->rxbuf = $3 ; if (($3 < OSPF_RXBUF_MINSIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("Buffer size must be in range 256-65535"); } 
307
 | password_list
308
 ;
309

    
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pref_list:
311
 /* empty */
312
 | pref_list pref_item
313
 ;
314

    
315
pref_item: pref_base pref_opt ';' ;
316

    
317
pref_base: prefix
318
 {
319
   this_pref = cfg_allocz(sizeof(struct area_net_config));
320
   add_tail(this_nets, NODE this_pref);
321
   this_pref->px.addr = $1.addr;
322
   this_pref->px.len = $1.len;
323
 }
324
;
325

    
326
pref_opt:
327
 /* empty */
328
 | HIDDEN { this_pref->hidden = 1; }
329
 | TAG expr { this_pref->tag = $2; }
330
 ;
331

    
332
nbma_list:
333
 /* empty */
334
 | nbma_list nbma_item
335
 ;
336

    
337
nbma_eligible:
338
 /* empty */ { $$ = 0; }
339
 | ELIGIBLE { $$ = 1; }
340
 ;
341
 
342
nbma_item: IPA nbma_eligible ';'
343
 {
344
   this_nbma = cfg_allocz(sizeof(struct nbma_node));
345
   add_tail(&OSPF_PATT->nbma_list, NODE this_nbma);
346
   this_nbma->ip=$1;
347
   this_nbma->eligible=$2;
348
 }
349
;
350
 
351
ospf_iface_start:
352
 {
353
  this_ipatt = cfg_allocz(sizeof(struct ospf_iface_patt));
354
  add_tail(&this_area->patt_list, NODE this_ipatt);
355
  init_list(&this_ipatt->ipn_list);
356
  OSPF_PATT->cost = COST_D;
357
  OSPF_PATT->helloint = HELLOINT_D;
358
  OSPF_PATT->pollint = POLLINT_D;
359
  OSPF_PATT->rxmtint = RXMTINT_D;
360
  OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
361
  OSPF_PATT->priority = PRIORITY_D;
362
  OSPF_PATT->waitint = WAIT_DMH*HELLOINT_D;
363
  OSPF_PATT->deadc = DEADC_D;
364
  OSPF_PATT->deadint = 0;
365
  OSPF_PATT->type = OSPF_IT_UNDEF;
366
  init_list(&OSPF_PATT->nbma_list);
367
  OSPF_PATT->autype = OSPF_AUTH_NONE;
368
  OSPF_PATT->ptp_netmask = 2; /* not specified */
369
  reset_passwords();
370
 }
371
;
372

    
373
ospf_instance_id:
374
   /* empty */
375
 | INSTANCE expr { set_instance_id($2); }
376
 ;
377

    
378
ospf_iface_opts:
379
   /* empty */
380
 | ospf_iface_opts ospf_iface_item ';'
381
 ;
382

    
383
ospf_iface_opt_list:
384
   /* empty */
385
 | '{' ospf_iface_opts '}'
386
 ;
387

    
388
ospf_iface:
389
  ospf_iface_start iface_patt_list ospf_instance_id ospf_iface_opt_list { ospf_iface_finish(); }
390
 ;
391

    
392
opttext:
393
    TEXT
394
 | /* empty */ { $$ = NULL; }
395
 ;
396

    
397
CF_ADDTO(dynamic_attr, OSPF_METRIC1 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC1); })
398
CF_ADDTO(dynamic_attr, OSPF_METRIC2 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC2); })
399
CF_ADDTO(dynamic_attr, OSPF_TAG { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_TAG); })
400
CF_ADDTO(dynamic_attr, OSPF_ROUTER_ID { $$ = f_new_dynamic_attr(EAF_TYPE_ROUTER_ID | EAF_TEMP, T_QUAD, EA_OSPF_ROUTER_ID); })
401

    
402
CF_CLI_HELP(SHOW OSPF, ..., [[Show information about OSPF protocol]]);
403
CF_CLI(SHOW OSPF, optsym, [<name>], [[Show information about OSPF protocol XXX]])
404
{ ospf_sh(proto_get_named($3, &proto_ospf)); };
405

    
406
CF_CLI(SHOW OSPF NEIGHBORS, optsym opttext, [<name>] [\"<interface>\"], [[Show information about OSPF neighbors]])
407
{ ospf_sh_neigh(proto_get_named($4, &proto_ospf), $5); };
408

    
409
CF_CLI(SHOW OSPF INTERFACE, optsym opttext, [<name>] [\"<interface>\"], [[Show information about interface]])
410
{ ospf_sh_iface(proto_get_named($4, &proto_ospf), $5); };
411

    
412
CF_CLI_HELP(SHOW OSPF TOPOLOGY, [all] [<name>], [[Show information about OSPF network topology]])
413

    
414
CF_CLI(SHOW OSPF TOPOLOGY, optsym opttext, [<name>], [[Show information about reachable OSPF network topology]])
415
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 0, 1); };
416

    
417
CF_CLI(SHOW OSPF TOPOLOGY ALL, optsym opttext, [<name>], [[Show information about all OSPF network topology]])
418
{ ospf_sh_state(proto_get_named($5, &proto_ospf), 0, 0); };
419

    
420
CF_CLI_HELP(SHOW OSPF STATE, [all] [<name>], [[Show information about OSPF network state]])
421

    
422
CF_CLI(SHOW OSPF STATE, optsym opttext, [<name>], [[Show information about reachable OSPF network state]])
423
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 1, 1); };
424

    
425
CF_CLI(SHOW OSPF STATE ALL, optsym opttext, [<name>], [[Show information about all OSPF network state]])
426
{ ospf_sh_state(proto_get_named($5, &proto_ospf), 1, 0); };
427

    
428
CF_CLI_HELP(SHOW OSPF LSADB, ..., [[Show content of OSPF LSA database]]);
429
CF_CLI(SHOW OSPF LSADB, lsadb_args, [global | area <id> | link] [type <num>] [lsid <id>] [self | router <id>] [<proto>], [[Show content of OSPF LSA database]])
430
{ ospf_sh_lsadb($4); };
431

    
432
lsadb_args:
433
   /* empty */ {
434
     $$ = cfg_allocz(sizeof(struct lsadb_show_data));
435
   }
436
 | lsadb_args GLOBAL { $$ = $1; $$->scope = LSA_SCOPE_AS; }
437
 | lsadb_args AREA idval { $$ = $1; $$->scope = LSA_SCOPE_AREA; $$->area = $3; }
438
 | lsadb_args LINK { $$ = $1; $$->scope = 1; /* hack, 0 is no filter */ }
439
 | lsadb_args TYPE NUM { $$ = $1; $$->type = $3; }
440
 | lsadb_args LSID idval { $$ = $1; $$->lsid = $3; }
441
 | lsadb_args SELF { $$ = $1; $$->router = SH_ROUTER_SELF; }
442
 | lsadb_args ROUTER idval { $$ = $1; $$->router = $3; }
443
 | lsadb_args SYM { $$ = $1; $$->name = $2; }
444
 ;
445

    
446
CF_CODE
447

    
448
CF_END