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labs-bird/nest/config.Y

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/*
* BIRD -- Core Configuration
*
* (c) 1998--2000 Martin Mares <mj@ucw.cz>
* (c) 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
CF_HDR
#include "nest/rt-dev.h"
#include "nest/password.h"
#include "nest/cmds.h"
#include "lib/lists.h"
CF_DEFINES
static struct proto_config *this_proto;
static struct iface_patt *this_ipatt;
static struct iface_patt_node *this_ipn;
static struct roa_table_config *this_roa_table;
static list *this_p_list;
static struct password_item *this_p_item;
static int password_id;
static inline void
reset_passwords(void)
{
this_p_list = NULL;
}
static inline list *
get_passwords(void)
{
list *rv = this_p_list;
this_p_list = NULL;
return rv;
}
#define DIRECT_CFG ((struct rt_dev_config *) this_proto)
CF_DECLS
CF_KEYWORDS(ROUTER, ID, PROTOCOL, TEMPLATE, PREFERENCE, DISABLED, DEBUG, ALL, OFF, DIRECT)
CF_KEYWORDS(INTERFACE, IMPORT, EXPORT, FILTER, NONE, TABLE, STATES, ROUTES, FILTERS)
CF_KEYWORDS(RECEIVE, LIMIT, ACTION, WARN, BLOCK, RESTART, DISABLE, KEEP, FILTERED)
CF_KEYWORDS(PASSWORD, FROM, PASSIVE, TO, ID, EVENTS, PACKETS, PROTOCOLS, INTERFACES)
CF_KEYWORDS(PRIMARY, STATS, COUNT, FOR, COMMANDS, PREEXPORT, GENERATE, ROA, MAX, FLUSH)
CF_KEYWORDS(LISTEN, BGP, V6ONLY, DUAL, ADDRESS, PORT, PASSWORDS, DESCRIPTION, SORTED)
CF_KEYWORDS(RELOAD, IN, OUT, MRTDUMP, MESSAGES, RESTRICT, MEMORY, IGP_METRIC)
CF_ENUM(T_ENUM_RTS, RTS_, DUMMY, STATIC, INHERIT, DEVICE, STATIC_DEVICE, REDIRECT,
RIP, OSPF, OSPF_IA, OSPF_EXT1, OSPF_EXT2, BGP, PIPE)
CF_ENUM(T_ENUM_SCOPE, SCOPE_, HOST, LINK, SITE, ORGANIZATION, UNIVERSE, UNDEFINED)
CF_ENUM(T_ENUM_RTC, RTC_, UNICAST, BROADCAST, MULTICAST, ANYCAST)
CF_ENUM(T_ENUM_RTD, RTD_, ROUTER, DEVICE, BLACKHOLE, UNREACHABLE, PROHIBIT, MULTIPATH)
CF_ENUM(T_ENUM_ROA, ROA_, UNKNOWN, VALID, INVALID)
%type <i32> idval
%type <f> imexport
%type <r> rtable
%type <s> optsym
%type <ra> r_args
%type <ro> roa_args
%type <rot> roa_table_arg
%type <sd> sym_args
%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_or_preexport roa_mode limit_action tab_sorted
%type <ps> proto_patt proto_patt2
%type <g> limit_spec
CF_GRAMMAR
/* Setting of router ID */
CF_ADDTO(conf, rtrid)
rtrid:
ROUTER ID idval ';' { new_config->router_id = $3; }
| ROUTER ID FROM iface_patt ';' { new_config->router_id_from = this_ipatt; }
;
idval:
NUM { $$ = $1; }
| RTRID
| IPA {
#ifndef IPV6
$$ = ipa_to_u32($1);
#else
cf_error("Router IDs must be entered as hexadecimal numbers or IPv4 addresses in IPv6 version");
#endif
}
;
CF_ADDTO(conf, listen)
listen: LISTEN BGP listen_opts ';' ;
listen_opts:
/* Nothing */
| listen_opts listen_opt
;
listen_opt:
ADDRESS ipa { new_config->listen_bgp_addr = $2; }
| PORT expr { new_config->listen_bgp_port = $2; }
| V6ONLY { new_config->listen_bgp_flags = 0; }
| DUAL { new_config->listen_bgp_flags = 1; }
;
/* Creation of routing tables */
tab_sorted:
{ $$ = 0; }
| SORTED { $$ = 1; }
;
CF_ADDTO(conf, newtab)
newtab: TABLE SYM tab_sorted {
struct rtable_config *cf;
cf = rt_new_table($2);
cf->sorted = $3;
}
;
CF_ADDTO(conf, roa_table)
roa_table_start: ROA TABLE SYM {
this_roa_table = roa_new_table_config($3);
};
roa_table_opts:
/* empty */
| roa_table_opts ROA prefix MAX NUM AS NUM ';' {
roa_add_item_config(this_roa_table, $3.addr, $3.len, $5, $7);
}
;
roa_table:
roa_table_start
| roa_table_start '{' roa_table_opts '}'
;
/* Definition of protocols */
CF_ADDTO(conf, proto)
proto_start:
PROTOCOL { $$ = SYM_PROTO; }
| TEMPLATE { $$ = SYM_TEMPLATE; }
;
proto_name:
/* EMPTY */ {
struct symbol *s = cf_default_name(this_proto->protocol->template, &this_proto->protocol->name_counter);
s->class = this_proto->class;
s->def = this_proto;
this_proto->name = s->name;
}
| SYM {
cf_define_symbol($1, this_proto->class, this_proto);
this_proto->name = $1->name;
}
| SYM FROM SYM {
if (($3->class != SYM_TEMPLATE) && ($3->class != SYM_PROTO)) cf_error("Template or protocol name expected");
cf_define_symbol($1, this_proto->class, this_proto);
this_proto->name = $1->name;
proto_copy_config(this_proto, $3->def);
}
;
proto_item:
/* EMPTY */
| PREFERENCE expr {
if ($2 < 0 || $2 > 0xFFFF) cf_error("Invalid preference");
this_proto->preference = $2;
}
| DISABLED bool { this_proto->disabled = $2; }
| DEBUG debug_mask { this_proto->debug = $2; }
| MRTDUMP mrtdump_mask { this_proto->mrtdump = $2; }
| IMPORT imexport { this_proto->in_filter = $2; }
| EXPORT imexport { this_proto->out_filter = $2; }
| RECEIVE LIMIT limit_spec { this_proto->rx_limit = $3; }
| IMPORT LIMIT limit_spec { this_proto->in_limit = $3; }
| EXPORT LIMIT limit_spec { this_proto->out_limit = $3; }
| IMPORT KEEP FILTERED bool { this_proto->in_keep_filtered = $4; }
| TABLE rtable { this_proto->table = $2; }
| ROUTER ID idval { this_proto->router_id = $3; }
| DESCRIPTION TEXT { this_proto->dsc = $2; }
;
imexport:
FILTER filter { $$ = $2; }
| where_filter
| ALL { $$ = FILTER_ACCEPT; }
| NONE { $$ = FILTER_REJECT; }
;
limit_action:
/* default */ { $$ = PLA_DISABLE; }
| ACTION WARN { $$ = PLA_WARN; }
| ACTION BLOCK { $$ = PLA_BLOCK; }
| ACTION RESTART { $$ = PLA_RESTART; }
| ACTION DISABLE { $$ = PLA_DISABLE; }
;
limit_spec:
expr limit_action {
struct proto_limit *l = cfg_allocz(sizeof(struct proto_limit));
l->limit = $1;
l->action = $2;
$$ = l;
}
| OFF { $$ = NULL; }
;
rtable:
SYM {
if ($1->class != SYM_TABLE) cf_error("Table name expected");
$$ = $1->def;
}
;
CF_ADDTO(conf, debug_default)
debug_default:
DEBUG PROTOCOLS debug_mask { new_config->proto_default_debug = $3; }
| DEBUG COMMANDS expr { new_config->cli_debug = $3; }
;
/* MRTDUMP PROTOCOLS is in systep/unix/config.Y */
/* Interface patterns */
iface_patt_node_init:
/* EMPTY */ {
struct iface_patt_node *ipn = cfg_allocz(sizeof(struct iface_patt_node));
add_tail(&this_ipatt->ipn_list, NODE ipn);
this_ipn = ipn;
}
;
iface_patt_node_body:
TEXT { this_ipn->pattern = $1; this_ipn->prefix = IPA_NONE; this_ipn->pxlen = 0; }
| prefix_or_ipa { this_ipn->pattern = NULL; this_ipn->prefix = $1.addr; this_ipn->pxlen = $1.len; }
| TEXT prefix_or_ipa { this_ipn->pattern = $1; this_ipn->prefix = $2.addr; this_ipn->pxlen = $2.len; }
;
iface_negate:
{ this_ipn->positive = 1; }
| '-' { this_ipn->positive = 0; }
;
iface_patt_node:
iface_patt_node_init iface_negate iface_patt_node_body
;
iface_patt_list:
iface_patt_node
| iface_patt_list ',' iface_patt_node
;
iface_patt_init: {
/* Generic this_ipatt init */
this_ipatt = cfg_allocz(sizeof(struct iface_patt));
init_list(&this_ipatt->ipn_list);
}
;
iface_patt:
iface_patt_init iface_patt_list
;
/* Direct device route protocol */
CF_ADDTO(proto, dev_proto '}')
dev_proto_start: proto_start DIRECT {
this_proto = proto_config_new(&proto_device, sizeof(struct rt_dev_config), $1);
init_list(&DIRECT_CFG->iface_list);
}
;
dev_proto:
dev_proto_start proto_name '{'
| dev_proto proto_item ';'
| dev_proto dev_iface_patt ';'
;
dev_iface_init:
/* EMPTY */ {
this_ipatt = cfg_allocz(sizeof(struct iface_patt));
add_tail(&DIRECT_CFG->iface_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
}
;
dev_iface_patt:
INTERFACE dev_iface_init iface_patt_list
;
/* Debug flags */
debug_mask:
ALL { $$ = ~0; }
| OFF { $$ = 0; }
| '{' debug_list '}' { $$ = $2; }
;
debug_list:
debug_flag
| debug_list ',' debug_flag { $$ = $1 | $3; }
;
debug_flag:
STATES { $$ = D_STATES; }
| ROUTES { $$ = D_ROUTES; }
| FILTERS { $$ = D_FILTERS; }
| INTERFACES { $$ = D_IFACES; }
| EVENTS { $$ = D_EVENTS; }
| PACKETS { $$ = D_PACKETS; }
;
/* MRTDump flags */
mrtdump_mask:
ALL { $$ = ~0; }
| OFF { $$ = 0; }
| '{' mrtdump_list '}' { $$ = $2; }
;
mrtdump_list:
mrtdump_flag
| mrtdump_list ',' mrtdump_flag { $$ = $1 | $3; }
;
mrtdump_flag:
STATES { $$ = MD_STATES; }
| MESSAGES { $$ = MD_MESSAGES; }
;
/* Password lists */
password_list:
PASSWORDS '{' password_items '}'
| password_item
;
password_items:
/* empty */
| password_item ';' password_items
;
password_item:
password_item_begin '{' password_item_params '}'
| password_item_begin
;
password_item_begin:
PASSWORD TEXT {
if (!this_p_list) {
this_p_list = cfg_alloc(sizeof(list));
init_list(this_p_list);
password_id = 1;
}
this_p_item = cfg_alloc(sizeof (struct password_item));
this_p_item->password = $2;
this_p_item->genfrom = 0;
this_p_item->gento = TIME_INFINITY;
this_p_item->accfrom = 0;
this_p_item->accto = TIME_INFINITY;
this_p_item->id = password_id++;
add_tail(this_p_list, &this_p_item->n);
}
;
password_item_params:
/* empty */ { }
| GENERATE FROM datetime ';' password_item_params { this_p_item->genfrom = $3; }
| GENERATE TO datetime ';' password_item_params { this_p_item->gento = $3; }
| ACCEPT FROM datetime ';' password_item_params { this_p_item->accfrom = $3; }
| ACCEPT TO datetime ';' password_item_params { this_p_item->accto = $3; }
| ID expr ';' password_item_params { this_p_item->id = $2; if ($2 <= 0) cf_error("Password ID has to be greated than zero."); }
;
/* Core commands */
CF_CLI_HELP(SHOW, ..., [[Show status information]])
CF_CLI(SHOW STATUS,,, [[Show router status]])
{ cmd_show_status(); } ;
CF_CLI(SHOW MEMORY,,, [[Show memory usage]])
{ cmd_show_memory(); } ;
CF_CLI(SHOW PROTOCOLS, proto_patt2, [<protocol> | \"<pattern>\"], [[Show routing protocols]])
{ proto_apply_cmd($3, proto_cmd_show, 0, 0); } ;
CF_CLI(SHOW PROTOCOLS ALL, proto_patt2, [<protocol> | \"<pattern>\"], [[Show routing protocol details]])
{ proto_apply_cmd($4, proto_cmd_show, 0, 1); } ;
optsym:
SYM
| /* empty */ { $$ = NULL; }
;
CF_CLI(SHOW INTERFACES,,, [[Show network interfaces]])
{ if_show(); } ;
CF_CLI(SHOW INTERFACES SUMMARY,,, [[Show summary of network interfaces]])
{ if_show_summary(); } ;
CF_CLI_HELP(SHOW ROUTE, ..., [[Show routing table]])
CF_CLI(SHOW ROUTE, r_args, [[[<prefix>|for <prefix>|for <ip>] [table <t>] [filter <f>|where <cond>] [all] [primary] [filtered] [(export|preexport) <p>] [protocol <p>] [stats|count]]], [[Show routing table]])
{ rt_show($3); } ;
r_args:
/* empty */ {
$$ = cfg_allocz(sizeof(struct rt_show_data));
$$->pxlen = 256;
$$->filter = FILTER_ACCEPT;
}
| r_args prefix {
$$ = $1;
if ($$->pxlen != 256) cf_error("Only one prefix expected");
$$->prefix = $2.addr;
$$->pxlen = $2.len;
}
| r_args FOR prefix_or_ipa {
$$ = $1;
if ($$->pxlen != 256) cf_error("Only one prefix expected");
$$->prefix = $3.addr;
$$->pxlen = $3.len;
$$->show_for = 1;
}
| r_args TABLE SYM {
$$ = $1;
if ($3->class != SYM_TABLE) cf_error("%s is not a table", $3->name);
$$->table = ((struct rtable_config *)$3->def)->table;
}
| r_args FILTER filter {
$$ = $1;
if ($$->filter != FILTER_ACCEPT) cf_error("Filter specified twice");
$$->filter = $3;
}
| r_args where_filter {
$$ = $1;
if ($$->filter != FILTER_ACCEPT) cf_error("Filter specified twice");
$$->filter = $2;
}
| r_args ALL {
$$ = $1;
$$->verbose = 1;
}
| r_args PRIMARY {
$$ = $1;
$$->primary_only = 1;
}
| r_args FILTERED {
$$ = $1;
$$->filtered = 1;
}
| r_args export_or_preexport SYM {
struct proto_config *c = (struct proto_config *) $3->def;
$$ = $1;
if ($$->export_mode) cf_error("Protocol specified twice");
if ($3->class != SYM_PROTO || !c->proto) cf_error("%s is not a protocol", $3->name);
$$->export_mode = $2;
$$->primary_only = 1;
$$->export_protocol = c->proto;
$$->running_on_config = c->proto->cf->global;
}
| r_args PROTOCOL SYM {
struct proto_config *c = (struct proto_config *) $3->def;
$$ = $1;
if ($$->show_protocol) cf_error("Protocol specified twice");
if ($3->class != SYM_PROTO || !c->proto) cf_error("%s is not a protocol", $3->name);
$$->show_protocol = c->proto;
$$->running_on_config = c->proto->cf->global;
}
| r_args STATS {
$$ = $1;
$$->stats = 1;
}
| r_args COUNT {
$$ = $1;
$$->stats = 2;
}
;
export_or_preexport:
PREEXPORT { $$ = 1; }
| EXPORT { $$ = 2; }
;
CF_CLI_HELP(SHOW ROA, ..., [[Show ROA table]])
CF_CLI(SHOW ROA, roa_args, [<prefix> | in <prefix> | for <prefix>] [as <num>] [table <t>], [[Show ROA table]])
{ roa_show($3); } ;
roa_args:
/* empty */ {
$$ = cfg_allocz(sizeof(struct roa_show_data));
$$->mode = ROA_SHOW_ALL;
$$->table = roa_table_default;
if (roa_table_default == NULL)
cf_error("No ROA table defined");
}
| roa_args roa_mode prefix {
$$ = $1;
if ($$->mode != ROA_SHOW_ALL) cf_error("Only one prefix expected");
$$->prefix = $3.addr;
$$->pxlen = $3.len;
$$->mode = $2;
}
| roa_args AS NUM {
$$ = $1;
$$->asn = $3;
}
| roa_args TABLE SYM {
$$ = $1;
if ($3->class != SYM_ROA) cf_error("%s is not a ROA table", $3->name);
$$->table = ((struct roa_table_config *)$3->def)->table;
}
;
roa_mode:
{ $$ = ROA_SHOW_PX; }
| IN { $$ = ROA_SHOW_IN; }
| FOR { $$ = ROA_SHOW_FOR; }
;
CF_CLI_HELP(SHOW SYMBOLS, ..., [[Show all known symbolic names]])
CF_CLI(SHOW SYMBOLS, sym_args, [table|filter|function|protocol|template|roa|<symbol>], [[Show all known symbolic names]])
{ cmd_show_symbols($3); } ;
sym_args:
/* empty */ {
$$ = cfg_allocz(sizeof(struct sym_show_data));
}
| sym_args TABLE { $$ = $1; $$->type = SYM_TABLE; }
| sym_args FUNCTION { $$ = $1; $$->type = SYM_FUNCTION; }
| sym_args FILTER { $$ = $1; $$->type = SYM_FILTER; }
| sym_args PROTOCOL { $$ = $1; $$->type = SYM_PROTO; }
| sym_args TEMPLATE { $$ = $1; $$->type = SYM_TEMPLATE; }
| sym_args ROA { $$ = $1; $$->type = SYM_ROA; }
| sym_args SYM { $$ = $1; $$->sym = $2; }
;
roa_table_arg:
/* empty */ {
if (roa_table_default == NULL)
cf_error("No ROA table defined");
$$ = roa_table_default;
}
| TABLE SYM {
if ($2->class != SYM_ROA)
cf_error("%s is not a ROA table", $2->name);
$$ = ((struct roa_table_config *)$2->def)->table;
}
;
CF_CLI_HELP(ADD, roa ..., [[Add ROA record]])
CF_CLI(ADD ROA, prefix MAX NUM AS NUM roa_table_arg, <prefix> max <num> as <num> [table <name>], [[Add ROA record]])
{
if (! cli_access_restricted())
{ roa_add_item($8, $3.addr, $3.len, $5, $7, ROA_SRC_DYNAMIC); cli_msg(0, ""); }
};
CF_CLI_HELP(DELETE, roa ..., [[Delete ROA record]])
CF_CLI(DELETE ROA, prefix MAX NUM AS NUM roa_table_arg, <prefix> max <num> as <num> [table <name>], [[Delete ROA record]])
{
if (! cli_access_restricted())
{ roa_delete_item($8, $3.addr, $3.len, $5, $7, ROA_SRC_DYNAMIC); cli_msg(0, ""); }
};
CF_CLI_HELP(FLUSH, roa [table <name>], [[Removes all dynamic ROA records]])
CF_CLI(FLUSH ROA, roa_table_arg, [table <name>], [[Removes all dynamic ROA records]])
{
if (! cli_access_restricted())
{ roa_flush($3, ROA_SRC_DYNAMIC); cli_msg(0, ""); }
};
CF_CLI_HELP(DUMP, ..., [[Dump debugging information]])
CF_CLI(DUMP RESOURCES,,, [[Dump all allocated resource]])
{ rdump(&root_pool); cli_msg(0, ""); } ;
CF_CLI(DUMP SOCKETS,,, [[Dump open sockets]])
{ sk_dump_all(); cli_msg(0, ""); } ;
CF_CLI(DUMP INTERFACES,,, [[Dump interface information]])
{ if_dump_all(); cli_msg(0, ""); } ;
CF_CLI(DUMP NEIGHBORS,,, [[Dump neighbor cache]])
{ neigh_dump_all(); cli_msg(0, ""); } ;
CF_CLI(DUMP ATTRIBUTES,,, [[Dump attribute cache]])
{ rta_dump_all(); cli_msg(0, ""); } ;
CF_CLI(DUMP ROUTES,,, [[Dump routing table]])
{ rt_dump_all(); cli_msg(0, ""); } ;
CF_CLI(DUMP PROTOCOLS,,, [[Dump protocol information]])
{ protos_dump_all(); cli_msg(0, ""); } ;
CF_CLI(ECHO, echo_mask echo_size, [all | off | <mask>] [<buffer-size>], [[Configure echoing of log messages]]) {
cli_set_log_echo(this_cli, $2, $3);
cli_msg(0, "");
} ;
echo_mask:
ALL { $$ = ~0; }
| OFF { $$ = 0; }
| NUM
;
echo_size:
/* empty */ { $$ = 4096; }
| NUM {
if ($1 < 256 || $1 > 65536) cf_error("Invalid log buffer size");
$$ = $1;
}
;
CF_CLI(DISABLE, proto_patt, <protocol> | \"<pattern>\" | all, [[Disable protocol]])
{ proto_apply_cmd($2, proto_cmd_disable, 1, 0); } ;
CF_CLI(ENABLE, proto_patt, <protocol> | \"<pattern>\" | all, [[Enable protocol]])
{ proto_apply_cmd($2, proto_cmd_enable, 1, 0); } ;
CF_CLI(RESTART, proto_patt, <protocol> | \"<pattern>\" | all, [[Restart protocol]])
{ proto_apply_cmd($2, proto_cmd_restart, 1, 0); } ;
CF_CLI(RELOAD, proto_patt, <protocol> | \"<pattern>\" | all, [[Reload protocol]])
{ proto_apply_cmd($2, proto_cmd_reload, 1, CMD_RELOAD); } ;
CF_CLI(RELOAD IN, proto_patt, <protocol> | \"<pattern>\" | all, [[Reload protocol (just imported routes)]])
{ proto_apply_cmd($3, proto_cmd_reload, 1, CMD_RELOAD_IN); } ;
CF_CLI(RELOAD OUT, proto_patt, <protocol> | \"<pattern>\" | all, [[Reload protocol (just exported routes)]])
{ proto_apply_cmd($3, proto_cmd_reload, 1, CMD_RELOAD_OUT); } ;
CF_CLI_HELP(DEBUG, ..., [[Control protocol debugging via BIRD logs]])
CF_CLI(DEBUG, proto_patt debug_mask, (<protocol> | <pattern> | all) (all | off | { states | routes | filters | interfaces | events | packets }), [[Control protocol debugging via BIRD logs]])
{ proto_apply_cmd($2, proto_cmd_debug, 1, $3); } ;
CF_CLI_HELP(MRTDUMP, ..., [[Control protocol debugging via MRTdump files]])
CF_CLI(MRTDUMP, proto_patt mrtdump_mask, (<protocol> | <pattern> | all) (all | off | { states | messages }), [[Control protocol debugging via MRTdump format]])
{ proto_apply_cmd($2, proto_cmd_mrtdump, 1, $3); } ;
CF_CLI(RESTRICT,,,[[Restrict current CLI session to safe commands]])
{ this_cli->restricted = 1; cli_msg(16, "Access restricted"); } ;
proto_patt:
SYM { $$.ptr = $1; $$.patt = 0; }
| ALL { $$.ptr = NULL; $$.patt = 1; }
| TEXT { $$.ptr = $1; $$.patt = 1; }
;
proto_patt2:
SYM { $$.ptr = $1; $$.patt = 0; }
| { $$.ptr = NULL; $$.patt = 1; }
| TEXT { $$.ptr = $1; $$.patt = 1; }
;
CF_ADDTO(dynamic_attr, IGP_METRIC
{ $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_GEN_IGP_METRIC); })
CF_CODE
CF_END
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