bird/proto/ospf/config.Y
Ondrej Zajicek 2bbc308321 Store protocol config size inside protocol structure
Make proto_config_new() use this info instead of supplied size.

Thanks to Alexander V. Chernikov for the patch.
2015-02-21 21:08:23 +01:00

460 lines
16 KiB
Text

/*
* BIRD -- OSPF Configuration
*
* (c) 1999--2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
CF_HDR
#include "proto/ospf/ospf.h"
CF_DEFINES
#define OSPF_CFG ((struct ospf_config *) this_proto)
#define OSPF_PATT ((struct ospf_iface_patt *) this_ipatt)
static struct ospf_area_config *this_area;
static struct nbma_node *this_nbma;
static list *this_nets;
static struct area_net_config *this_pref;
static struct ospf_stubnet_config *this_stubnet;
static inline int ospf_cfg_is_v2(void) { return OSPF_CFG->ospf2; }
static inline int ospf_cfg_is_v3(void) { return ! OSPF_CFG->ospf2; }
static void
ospf_iface_finish(void)
{
struct ospf_iface_patt *ip = OSPF_PATT;
if (ip->deadint == 0)
ip->deadint = ip->deadc * ip->helloint;
if (ip->waitint == 0)
ip->waitint = ip->deadc * ip->helloint;
ip->passwords = get_passwords();
if ((ip->autype == OSPF_AUTH_CRYPT) && (ip->helloint < 5))
log(L_WARN "Hello or poll interval less that 5 makes cryptographic authenication prone to replay attacks");
if ((ip->autype == OSPF_AUTH_NONE) && (ip->passwords != NULL))
log(L_WARN "Password option without authentication option does not make sense");
}
static void
ospf_area_finish(void)
{
if ((this_area->areaid == 0) && (this_area->type != OPT_E))
cf_error("Backbone area cannot be stub/NSSA");
if (this_area->summary && (this_area->type == OPT_E))
cf_error("Only stub/NSSA areas can use summary propagation");
if (this_area->default_nssa && ((this_area->type != OPT_N) || ! this_area->summary))
cf_error("Only NSSA areas with summary propagation can use NSSA default route");
if ((this_area->default_cost & LSA_EXT3_EBIT) && ! this_area->default_nssa)
cf_error("Only NSSA default route can use type 2 metric");
}
static void
ospf_proto_finish(void)
{
struct ospf_config *cf = OSPF_CFG;
if (EMPTY_LIST(cf->area_list))
cf_error( "No configured areas in OSPF");
int areano = 0;
int backbone = 0;
int nssa = 0;
struct ospf_area_config *ac;
WALK_LIST(ac, cf->area_list)
{
areano++;
if (ac->areaid == 0)
backbone = 1;
if (ac->type == OPT_N)
nssa = 1;
}
cf->abr = areano > 1;
/* Route export or NSSA translation (RFC 3101 3.1) */
cf->asbr = (this_proto->out_filter != FILTER_REJECT) || (nssa && cf->abr);
if (cf->abr && !backbone)
{
struct ospf_area_config *ac = cfg_allocz(sizeof(struct ospf_area_config));
ac->type = OPT_E; /* Backbone is non-stub */
add_head(&cf->area_list, NODE ac);
init_list(&ac->patt_list);
init_list(&ac->net_list);
init_list(&ac->enet_list);
init_list(&ac->stubnet_list);
}
if (!cf->abr && !EMPTY_LIST(cf->vlink_list))
cf_error("Vlinks cannot be used on single area router");
if (cf->asbr && (areano == 1) && (this_area->type == 0))
cf_error("ASBR must be in non-stub area");
}
static inline void
ospf_check_defcost(int cost)
{
if ((cost <= 0) || (cost >= LSINFINITY))
cf_error("Default cost must be in range 1-%d", LSINFINITY-1);
}
static inline void
ospf_check_auth(void)
{
if (ospf_cfg_is_v3())
cf_error("Authentication not supported in OSPFv3");
}
CF_DECLS
CF_KEYWORDS(OSPF, AREA, OSPF_METRIC1, OSPF_METRIC2, OSPF_TAG, OSPF_ROUTER_ID)
CF_KEYWORDS(NEIGHBORS, RFC1583COMPAT, STUB, TICK, COST, COST2, RETRANSMIT)
CF_KEYWORDS(HELLO, TRANSMIT, PRIORITY, DEAD, TYPE, BROADCAST, BCAST, DEFAULT)
CF_KEYWORDS(NONBROADCAST, NBMA, POINTOPOINT, PTP, POINTOMULTIPOINT, PTMP)
CF_KEYWORDS(NONE, SIMPLE, AUTHENTICATION, STRICT, CRYPTOGRAPHIC, TTL, SECURITY)
CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, CHECK, LINK, ONLY, BFD)
CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL, STUBNET, HIDDEN, SUMMARY, TAG, EXTERNAL)
CF_KEYWORDS(WAIT, DELAY, LSADB, ECMP, LIMIT, WEIGHT, NSSA, TRANSLATOR, STABILITY)
CF_KEYWORDS(GLOBAL, LSID, ROUTER, SELF, INSTANCE, REAL, NETMASK, TX, PRIORITY, LENGTH)
CF_KEYWORDS(SECONDARY, MERGE, LSA, SUPPRESSION)
%type <t> opttext
%type <ld> lsadb_args
%type <i> nbma_eligible
CF_GRAMMAR
CF_ADDTO(proto, ospf_proto '}' { ospf_proto_finish(); } )
ospf_proto_start: proto_start OSPF {
this_proto = proto_config_new(&proto_ospf, $1);
init_list(&OSPF_CFG->area_list);
init_list(&OSPF_CFG->vlink_list);
OSPF_CFG->tick = OSPF_DEFAULT_TICK;
OSPF_CFG->ospf2 = OSPF_IS_V2;
}
;
ospf_proto:
ospf_proto_start proto_name '{'
| ospf_proto ospf_proto_item ';'
;
ospf_proto_item:
proto_item
| RFC1583COMPAT bool { OSPF_CFG->rfc1583 = $2; }
| STUB ROUTER bool { OSPF_CFG->stub_router = $3; }
| ECMP bool { OSPF_CFG->ecmp = $2 ? OSPF_DEFAULT_ECMP_LIMIT : 0; }
| ECMP bool LIMIT expr { OSPF_CFG->ecmp = $2 ? $4 : 0; if ($4 < 0) cf_error("ECMP limit cannot be negative"); }
| MERGE EXTERNAL bool { OSPF_CFG->merge_external = $3; }
| TICK expr { OSPF_CFG->tick = $2; if($2<=0) cf_error("Tick must be greater than zero"); }
| INSTANCE ID expr { OSPF_CFG->instance_id = $3; if (($3<0) || ($3>255)) cf_error("Instance ID must be in range 0-255"); }
| ospf_area
;
ospf_area_start: AREA idval {
this_area = cfg_allocz(sizeof(struct ospf_area_config));
add_tail(&OSPF_CFG->area_list, NODE this_area);
this_area->areaid = $2;
this_area->default_cost = OSPF_DEFAULT_STUB_COST;
this_area->type = OPT_E;
this_area->transint = OSPF_DEFAULT_TRANSINT;
init_list(&this_area->patt_list);
init_list(&this_area->net_list);
init_list(&this_area->enet_list);
init_list(&this_area->stubnet_list);
}
;
ospf_area: ospf_area_start '{' ospf_area_opts '}' { ospf_area_finish(); }
;
ospf_area_opts:
/* empty */
| ospf_area_opts ospf_area_item ';'
;
ospf_area_item:
STUB bool { this_area->type = $2 ? 0 : OPT_E; /* We should remove the option */ }
| NSSA { this_area->type = OPT_N; }
| SUMMARY bool { this_area->summary = $2; }
| DEFAULT NSSA bool { this_area->default_nssa = $3; }
| DEFAULT COST expr { this_area->default_cost = $3; ospf_check_defcost($3); }
| DEFAULT COST2 expr { this_area->default_cost = $3 | LSA_EXT3_EBIT; ospf_check_defcost($3); }
| STUB COST expr { this_area->default_cost = $3; ospf_check_defcost($3); }
| TRANSLATOR bool { this_area->translator = $2; }
| TRANSLATOR STABILITY expr { this_area->transint = $3; }
| NETWORKS { this_nets = &this_area->net_list; } '{' pref_list '}'
| EXTERNAL { this_nets = &this_area->enet_list; } '{' pref_list '}'
| STUBNET ospf_stubnet
| INTERFACE ospf_iface
| ospf_vlink
;
ospf_stubnet:
ospf_stubnet_start '{' ospf_stubnet_opts '}'
| ospf_stubnet_start
;
ospf_stubnet_start:
prefix {
this_stubnet = cfg_allocz(sizeof(struct ospf_stubnet_config));
add_tail(&this_area->stubnet_list, NODE this_stubnet);
this_stubnet->px = $1;
this_stubnet->cost = COST_D;
}
;
ospf_stubnet_opts:
/* empty */
| ospf_stubnet_opts ospf_stubnet_item ';'
;
ospf_stubnet_item:
HIDDEN bool { this_stubnet->hidden = $2; }
| SUMMARY bool { this_stubnet->summary = $2; }
| COST expr { this_stubnet->cost = $2; }
;
ospf_vlink:
ospf_vlink_start ospf_instance_id '{' ospf_vlink_opts '}' { ospf_iface_finish(); }
| ospf_vlink_start ospf_instance_id { ospf_iface_finish(); }
;
ospf_vlink_opts:
/* empty */
| ospf_vlink_opts ospf_vlink_item ';'
;
ospf_vlink_item:
| HELLO expr { OSPF_PATT->helloint = $2 ; if (($2<=0) || ($2>65535)) cf_error("Hello interval must be in range 1-65535"); }
| RETRANSMIT expr { OSPF_PATT->rxmtint = $2 ; if ($2<=1) cf_error("Retransmit int must be greater than one"); }
| TRANSMIT DELAY expr { OSPF_PATT->inftransdelay = $3 ; if (($3<=0) || ($3>65535)) cf_error("Transmit delay must be in range 1-65535"); }
| WAIT expr { OSPF_PATT->waitint = $2 ; if ($2<=1) cf_error("Wait interval must be greater than one"); }
| DEAD expr { OSPF_PATT->deadint = $2 ; if ($2<=1) cf_error("Dead interval must be greater than one"); }
| DEAD COUNT expr { OSPF_PATT->deadc = $3 ; if ($3<=1) cf_error("Dead count must be greater than one"); }
| AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE; }
| AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE; ospf_check_auth(); }
| AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT; ospf_check_auth(); }
| password_list { ospf_check_auth(); }
;
ospf_vlink_start: VIRTUAL LINK idval
{
if (this_area->areaid == 0) cf_error("Virtual link cannot be in backbone");
this_ipatt = cfg_allocz(sizeof(struct ospf_iface_patt));
add_tail(&OSPF_CFG->vlink_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
OSPF_PATT->voa = this_area->areaid;
OSPF_PATT->vid = $3;
OSPF_PATT->helloint = HELLOINT_D;
OSPF_PATT->rxmtint = RXMTINT_D;
OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
OSPF_PATT->deadc = DEADC_D;
OSPF_PATT->type = OSPF_IT_VLINK;
OSPF_PATT->instance_id = OSPF_CFG->instance_id;
init_list(&OSPF_PATT->nbma_list);
reset_passwords();
}
;
ospf_iface_item:
COST expr { OSPF_PATT->cost = $2 ; if (($2<=0) || ($2>65535)) cf_error("Cost must be in range 1-65535"); }
| HELLO expr { OSPF_PATT->helloint = $2 ; if (($2<=0) || ($2>65535)) cf_error("Hello interval must be in range 1-65535"); }
| POLL expr { OSPF_PATT->pollint = $2 ; if ($2<=0) cf_error("Poll int must be greater than zero"); }
| RETRANSMIT expr { OSPF_PATT->rxmtint = $2 ; if ($2<=1) cf_error("Retransmit int must be greater than one"); }
| WAIT expr { OSPF_PATT->waitint = $2 ; if ($2<=1) cf_error("Wait interval must be greater than one"); }
| DEAD expr { OSPF_PATT->deadint = $2 ; if ($2<=1) cf_error("Dead interval must be greater than one"); }
| DEAD COUNT expr { OSPF_PATT->deadc = $3 ; if ($3<=1) cf_error("Dead count must be greater than one"); }
| TYPE BROADCAST { OSPF_PATT->type = OSPF_IT_BCAST ; }
| TYPE BCAST { OSPF_PATT->type = OSPF_IT_BCAST ; }
| TYPE NONBROADCAST { OSPF_PATT->type = OSPF_IT_NBMA ; }
| TYPE NBMA { OSPF_PATT->type = OSPF_IT_NBMA ; }
| TYPE POINTOPOINT { OSPF_PATT->type = OSPF_IT_PTP ; }
| TYPE PTP { OSPF_PATT->type = OSPF_IT_PTP ; }
| TYPE POINTOMULTIPOINT { OSPF_PATT->type = OSPF_IT_PTMP ; }
| TYPE PTMP { OSPF_PATT->type = OSPF_IT_PTMP ; }
| REAL BROADCAST bool { OSPF_PATT->real_bcast = $3; if (!ospf_cfg_is_v2()) cf_error("Real broadcast option requires OSPFv2"); }
| PTP NETMASK bool { OSPF_PATT->ptp_netmask = $3; if (!ospf_cfg_is_v2()) cf_error("PtP netmask option requires OSPFv2"); }
| TRANSMIT DELAY expr { OSPF_PATT->inftransdelay = $3 ; if (($3<=0) || ($3>65535)) cf_error("Transmit delay must be in range 1-65535"); }
| PRIORITY expr { OSPF_PATT->priority = $2 ; if (($2<0) || ($2>255)) cf_error("Priority must be in range 0-255"); }
| STRICT NONBROADCAST bool { OSPF_PATT->strictnbma = $3 ; }
| STUB bool { OSPF_PATT->stub = $2 ; }
| CHECK LINK bool { OSPF_PATT->check_link = $3; }
| ECMP WEIGHT expr { OSPF_PATT->ecmp_weight = $3 - 1; if (($3<1) || ($3>256)) cf_error("ECMP weight must be in range 1-256"); }
| LINK LSA SUPPRESSION bool { OSPF_PATT->link_lsa_suppression = $4; if (!ospf_cfg_is_v3()) cf_error("Link LSA suppression option requires OSPFv3"); }
| NEIGHBORS '{' nbma_list '}'
| AUTHENTICATION NONE { OSPF_PATT->autype = OSPF_AUTH_NONE; }
| AUTHENTICATION SIMPLE { OSPF_PATT->autype = OSPF_AUTH_SIMPLE; ospf_check_auth(); }
| AUTHENTICATION CRYPTOGRAPHIC { OSPF_PATT->autype = OSPF_AUTH_CRYPT; ospf_check_auth(); }
| RX BUFFER NORMAL { OSPF_PATT->rx_buffer = 0; }
| RX BUFFER LARGE { OSPF_PATT->rx_buffer = OSPF_MAX_PKT_SIZE; }
| RX BUFFER expr { OSPF_PATT->rx_buffer = $3; if (($3 < OSPF_MIN_PKT_SIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("Buffer size must be in range 256-65535"); }
| TX tos { OSPF_PATT->tx_tos = $2; }
| TX PRIORITY expr { OSPF_PATT->tx_priority = $3; }
| TX LENGTH expr { OSPF_PATT->tx_length = $3; if (($3 < OSPF_MIN_PKT_SIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("TX length must be in range 256-65535"); }
| TTL SECURITY bool { OSPF_PATT->ttl_security = $3; }
| TTL SECURITY TX ONLY { OSPF_PATT->ttl_security = 2; }
| BFD bool { OSPF_PATT->bfd = $2; cf_check_bfd($2); }
| SECONDARY bool { OSPF_PATT->bsd_secondary = $2; }
| password_list { ospf_check_auth(); }
;
pref_list:
/* empty */
| pref_list pref_item
;
pref_item: pref_base pref_opt ';' ;
pref_base: prefix
{
this_pref = cfg_allocz(sizeof(struct area_net_config));
add_tail(this_nets, NODE this_pref);
this_pref->px.addr = $1.addr;
this_pref->px.len = $1.len;
}
;
pref_opt:
/* empty */
| HIDDEN { this_pref->hidden = 1; }
| TAG expr { this_pref->tag = $2; }
;
nbma_list:
/* empty */
| nbma_list nbma_item
;
nbma_eligible:
/* empty */ { $$ = 0; }
| ELIGIBLE { $$ = 1; }
;
nbma_item: ipa nbma_eligible ';'
{
this_nbma = cfg_allocz(sizeof(struct nbma_node));
add_tail(&OSPF_PATT->nbma_list, NODE this_nbma);
this_nbma->ip=$1;
this_nbma->eligible=$2;
}
;
ospf_iface_start:
{
this_ipatt = cfg_allocz(sizeof(struct ospf_iface_patt));
add_tail(&this_area->patt_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
OSPF_PATT->cost = COST_D;
OSPF_PATT->helloint = HELLOINT_D;
OSPF_PATT->pollint = POLLINT_D;
OSPF_PATT->rxmtint = RXMTINT_D;
OSPF_PATT->inftransdelay = INFTRANSDELAY_D;
OSPF_PATT->priority = PRIORITY_D;
OSPF_PATT->deadc = DEADC_D;
OSPF_PATT->type = OSPF_IT_UNDEF;
OSPF_PATT->instance_id = OSPF_CFG->instance_id;
init_list(&OSPF_PATT->nbma_list);
OSPF_PATT->ptp_netmask = 2; /* not specified */
OSPF_PATT->tx_tos = IP_PREC_INTERNET_CONTROL;
OSPF_PATT->tx_priority = sk_priority_control;
reset_passwords();
}
;
ospf_instance_id:
/* empty */
| INSTANCE expr { OSPF_PATT->instance_id = $2; if (($2<0) || ($2>255)) cf_error("Instance ID must be in range 0-255"); }
;
ospf_iface_patt_list:
iface_patt_list { if (ospf_cfg_is_v3()) iface_patt_check(); } ospf_instance_id
;
ospf_iface_opts:
/* empty */
| ospf_iface_opts ospf_iface_item ';'
;
ospf_iface_opt_list:
/* empty */
| '{' ospf_iface_opts '}'
;
ospf_iface:
ospf_iface_start ospf_iface_patt_list ospf_iface_opt_list { ospf_iface_finish(); }
;
opttext:
TEXT
| /* empty */ { $$ = NULL; }
;
CF_ADDTO(dynamic_attr, OSPF_METRIC1 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC1); })
CF_ADDTO(dynamic_attr, OSPF_METRIC2 { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_METRIC2); })
CF_ADDTO(dynamic_attr, OSPF_TAG { $$ = f_new_dynamic_attr(EAF_TYPE_INT | EAF_TEMP, T_INT, EA_OSPF_TAG); })
CF_ADDTO(dynamic_attr, OSPF_ROUTER_ID { $$ = f_new_dynamic_attr(EAF_TYPE_ROUTER_ID | EAF_TEMP, T_QUAD, EA_OSPF_ROUTER_ID); })
CF_CLI_HELP(SHOW OSPF, ..., [[Show information about OSPF protocol]]);
CF_CLI(SHOW OSPF, optsym, [<name>], [[Show information about OSPF protocol XXX]])
{ ospf_sh(proto_get_named($3, &proto_ospf)); };
CF_CLI(SHOW OSPF NEIGHBORS, optsym opttext, [<name>] [\"<interface>\"], [[Show information about OSPF neighbors]])
{ ospf_sh_neigh(proto_get_named($4, &proto_ospf), $5); };
CF_CLI(SHOW OSPF INTERFACE, optsym opttext, [<name>] [\"<interface>\"], [[Show information about interface]])
{ ospf_sh_iface(proto_get_named($4, &proto_ospf), $5); };
CF_CLI_HELP(SHOW OSPF TOPOLOGY, [all] [<name>], [[Show information about OSPF network topology]])
CF_CLI(SHOW OSPF TOPOLOGY, optsym opttext, [<name>], [[Show information about reachable OSPF network topology]])
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 0, 1); };
CF_CLI(SHOW OSPF TOPOLOGY ALL, optsym opttext, [<name>], [[Show information about all OSPF network topology]])
{ ospf_sh_state(proto_get_named($5, &proto_ospf), 0, 0); };
CF_CLI_HELP(SHOW OSPF STATE, [all] [<name>], [[Show information about OSPF network state]])
CF_CLI(SHOW OSPF STATE, optsym opttext, [<name>], [[Show information about reachable OSPF network state]])
{ ospf_sh_state(proto_get_named($4, &proto_ospf), 1, 1); };
CF_CLI(SHOW OSPF STATE ALL, optsym opttext, [<name>], [[Show information about all OSPF network state]])
{ ospf_sh_state(proto_get_named($5, &proto_ospf), 1, 0); };
CF_CLI_HELP(SHOW OSPF LSADB, ..., [[Show content of OSPF LSA database]]);
CF_CLI(SHOW OSPF LSADB, lsadb_args, [global | area <id> | link] [type <num>] [lsid <id>] [self | router <id>] [<proto>], [[Show content of OSPF LSA database]])
{ ospf_sh_lsadb($4); };
lsadb_args:
/* empty */ {
$$ = cfg_allocz(sizeof(struct lsadb_show_data));
}
| lsadb_args GLOBAL { $$ = $1; $$->scope = LSA_SCOPE_AS; }
| lsadb_args AREA idval { $$ = $1; $$->scope = LSA_SCOPE_AREA; $$->area = $3; }
| lsadb_args LINK { $$ = $1; $$->scope = 1; /* hack, 0 is no filter */ }
| lsadb_args TYPE NUM { $$ = $1; $$->type = $3; }
| lsadb_args LSID idval { $$ = $1; $$->lsid = $3; }
| lsadb_args SELF { $$ = $1; $$->router = SH_ROUTER_SELF; }
| lsadb_args ROUTER idval { $$ = $1; $$->router = $3; }
| lsadb_args SYM { $$ = $1; $$->name = $2; }
;
CF_CODE
CF_END