blob: 33fb3f749c2486caa604fe854fe45d83d10e1c85 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* 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
#include "nest/bird.h"
#include "conf/conf.h"
#include "lib/resource.h"
#include "lib/socket.h"
#include "lib/timer.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_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_val v;
struct password_item *p;
struct rt_show_data *ra;
void *g;
bird_clock_t time;
}
%token END CLI_MARKER INVALID_TOKEN
%token GEQ LEQ NEQ
%token <i> NUM ENUM
%token <i32> RTRID
%token <a> IPA
%token <s> SYM
%token <t> TEXT
%type <i> expr bool pxlen
%type <time> datetime
%nonassoc '=' '<' '>' '~' '.' GEQ LEQ NEQ
%left '+' '-'
%left '*' '/' '%'
%left '!'
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
| expr '+' expr { $$ = $1 + $3; }
| expr '-' expr { $$ = $1 - $3; }
| expr '*' expr { $$ = $1 * $3; }
| expr '/' expr { if ($3) $$ = $1 / $3; else cf_error("Division by zero"); }
| expr '%' expr { if ($3) $$ = $1 % $3; else cf_error("Division by zero"); }
| '(' expr ')' { $$ = $2; }
| SYM { if ($1->class != SYM_NUMBER) cf_error("Number expected"); else $$ = $1->aux; }
;
CF_ADDTO(conf, definition)
definition:
DEFINE SYM '=' expr ';' {
cf_define_symbol($2, SYM_NUMBER, NULL);
$2->aux = $4;
}
;
/* Switches */
bool:
expr {$$ = !!$1; }
| ON { $$ = 1; }
| YES { $$ = 1; }
| OFF { $$ = 0; }
| NO { $$ = 0; }
| /* Silence means agreement */ { $$ = 1; }
;
/* Prefixes and netmasks */
pxlen:
'/' NUM {
if ($2 < 0 || $2 > 32) cf_error("Invalid prefix length %d", $2);
$$ = $2;
}
| ':' IPA {
$$ = ipa_mklen($2);
if ($$ < 0) cf_error("Invalid netmask %I", $2);
}
;
datetime: /* Return seconds from epoch, FIXME we want be more user friendly */
TEXT {
$$ = tm_parse_date($1);
if (!$$)
cf_error("Invalid date");
}
;
CF_CODE
CF_END
|
