190 lines
3.3 KiB
Text
190 lines
3.3 KiB
Text
/*
|
|
* BIRD -- Configuration Parser Top
|
|
*
|
|
* (c) 1998--2000 Martin Mares <mj@ucw.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
CF_HDR
|
|
|
|
#define PARSER 1
|
|
|
|
#include "nest/bird.h"
|
|
#include "conf/conf.h"
|
|
#include "lib/resource.h"
|
|
#include "lib/socket.h"
|
|
#include "lib/timer.h"
|
|
#include "lib/string.h"
|
|
#include "nest/protocol.h"
|
|
#include "nest/iface.h"
|
|
#include "nest/route.h"
|
|
#include "nest/cli.h"
|
|
#include "filter/filter.h"
|
|
|
|
/* FIXME: Turn on YYERROR_VERBOSE and work around lots of bison bugs? */
|
|
|
|
CF_DEFINES
|
|
|
|
static void
|
|
check_u16(unsigned val)
|
|
{
|
|
if (val > 0xFFFF)
|
|
cf_error("Value %d out of range (0-65535)", val);
|
|
}
|
|
|
|
CF_DECLS
|
|
|
|
%union {
|
|
int i;
|
|
u32 i32;
|
|
ip_addr a;
|
|
struct symbol *s;
|
|
char *t;
|
|
struct rtable_config *r;
|
|
struct f_inst *x;
|
|
struct filter *f;
|
|
struct f_tree *e;
|
|
struct f_trie *trie;
|
|
struct f_val v;
|
|
struct f_path_mask *h;
|
|
struct password_item *p;
|
|
struct rt_show_data *ra;
|
|
struct sym_show_data *sd;
|
|
struct lsadb_show_data *ld;
|
|
struct iface *iface;
|
|
void *g;
|
|
bird_clock_t time;
|
|
struct prefix px;
|
|
struct proto_spec ps;
|
|
struct timeformat *tf;
|
|
}
|
|
|
|
%token END CLI_MARKER INVALID_TOKEN ELSECOL DDOT
|
|
%token GEQ LEQ NEQ AND OR
|
|
%token PO PC
|
|
%token <i> NUM ENUM
|
|
%token <i32> RTRID
|
|
%token <a> IPA
|
|
%token <s> SYM
|
|
%token <t> TEXT
|
|
%type <iface> ipa_scope
|
|
|
|
%type <i> expr bool pxlen
|
|
%type <time> datetime
|
|
%type <a> ipa
|
|
%type <px> prefix prefix_or_ipa
|
|
%type <t> text_or_none
|
|
|
|
%nonassoc PREFIX_DUMMY
|
|
%left AND OR
|
|
%nonassoc '=' '<' '>' '~' GEQ LEQ NEQ PO PC
|
|
%left '+' '-'
|
|
%left '*' '/' '%'
|
|
%left '!'
|
|
%nonassoc '.'
|
|
|
|
CF_KEYWORDS(DEFINE, ON, OFF, YES, NO)
|
|
|
|
CF_GRAMMAR
|
|
|
|
/* Basic config file structure */
|
|
|
|
config: conf_entries END { return 0; }
|
|
| CLI_MARKER cli_cmd { return 0; }
|
|
;
|
|
|
|
conf_entries:
|
|
/* EMPTY */
|
|
| conf_entries conf
|
|
;
|
|
|
|
CF_ADDTO(conf, ';')
|
|
|
|
/* Constant expressions */
|
|
|
|
expr:
|
|
NUM
|
|
| '(' term ')' { $$ = f_eval_int($2); }
|
|
| SYM { if ($1->class != SYM_NUMBER) cf_error("Number expected"); else $$ = $1->aux; }
|
|
;
|
|
|
|
/* expr_u16: expr { check_u16($1); $$ = $1; }; */
|
|
|
|
CF_ADDTO(conf, definition)
|
|
definition:
|
|
DEFINE SYM '=' expr ';' {
|
|
cf_define_symbol($2, SYM_NUMBER, NULL);
|
|
$2->aux = $4;
|
|
}
|
|
| DEFINE SYM '=' IPA ';' {
|
|
cf_define_symbol($2, SYM_IPA, cfg_alloc(sizeof(ip_addr)));
|
|
*(ip_addr *)$2->def = $4;
|
|
}
|
|
;
|
|
|
|
/* Switches */
|
|
|
|
bool:
|
|
expr {$$ = !!$1; }
|
|
| ON { $$ = 1; }
|
|
| YES { $$ = 1; }
|
|
| OFF { $$ = 0; }
|
|
| NO { $$ = 0; }
|
|
| /* Silence means agreement */ { $$ = 1; }
|
|
;
|
|
|
|
/* Addresses, prefixes and netmasks */
|
|
|
|
ipa:
|
|
IPA
|
|
| SYM {
|
|
if ($1->class != SYM_IPA) cf_error("IP address expected");
|
|
$$ = *(ip_addr *)$1->def;
|
|
}
|
|
;
|
|
|
|
ipa_scope:
|
|
/* empty */ { $$ = NULL; }
|
|
| '%' SYM { $$ = if_get_by_name($2->name); }
|
|
;
|
|
|
|
prefix:
|
|
ipa pxlen {
|
|
if (!ip_is_prefix($1, $2)) cf_error("Invalid prefix");
|
|
$$.addr = $1; $$.len = $2;
|
|
}
|
|
;
|
|
|
|
prefix_or_ipa:
|
|
prefix
|
|
| ipa { $$.addr = $1; $$.len = BITS_PER_IP_ADDRESS; }
|
|
;
|
|
|
|
pxlen:
|
|
'/' expr {
|
|
if ($2 < 0 || $2 > BITS_PER_IP_ADDRESS) cf_error("Invalid prefix length %d", $2);
|
|
$$ = $2;
|
|
}
|
|
| ':' ipa {
|
|
$$ = ipa_mklen($2);
|
|
if ($$ < 0) cf_error("Invalid netmask %I", $2);
|
|
}
|
|
;
|
|
|
|
datetime:
|
|
TEXT {
|
|
$$ = tm_parse_datetime($1);
|
|
if (!$$)
|
|
cf_error("Invalid date and time");
|
|
}
|
|
;
|
|
|
|
text_or_none:
|
|
TEXT { $$ = $1; }
|
|
| { $$ = NULL; }
|
|
;
|
|
|
|
CF_CODE
|
|
|
|
CF_END
|