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f142750d MM |
1 | /* |
2 | * BIRD -- Configuration Parser Top | |
3 | * | |
c9b66706 | 4 | * (c) 1998--1999 Martin Mares <mj@ucw.cz> |
f142750d MM |
5 | * |
6 | * Can be freely distributed and used under the terms of the GNU GPL. | |
7 | */ | |
8 | ||
9 | CF_HDR | |
10 | ||
11 | #include "nest/bird.h" | |
12 | #include "conf/conf.h" | |
c74c0e3c MM |
13 | #include "lib/resource.h" |
14 | #include "lib/socket.h" | |
15 | #include "lib/timer.h" | |
16 | #include "nest/protocol.h" | |
50d8424a | 17 | #include "nest/iface.h" |
166b9c49 | 18 | #include "nest/route.h" |
bc2fb680 | 19 | #include "nest/cli.h" |
b9d70dc8 | 20 | #include "filter/filter.h" |
f142750d | 21 | |
bc2fb680 MM |
22 | #define cli_msg(x...) cli_printf(this_cli, x) |
23 | ||
f142750d MM |
24 | CF_DECLS |
25 | ||
26 | %union { | |
27 | int i; | |
dce26783 | 28 | u32 i32; |
f142750d MM |
29 | ip_addr a; |
30 | struct symbol *s; | |
31 | char *t; | |
0e02abfd | 32 | struct rtable_config *r; |
e0f2e42f MM |
33 | struct f_inst *x; |
34 | struct filter *f; | |
38506f71 PM |
35 | struct f_tree *e; |
36 | struct f_val v; | |
9d79fec8 | 37 | struct password_item *p; |
f142750d MM |
38 | } |
39 | ||
bc2fb680 | 40 | %token END CLI_MARKER |
f142750d | 41 | %token <i> NUM |
dce26783 | 42 | %token <i32> RTRID |
f142750d MM |
43 | %token <a> IPA |
44 | %token <s> SYM | |
45 | %token <t> TEXT | |
46 | ||
9d79fec8 | 47 | %type <i> expr bool pxlen datetime |
0b62c3a7 | 48 | |
f4536657 | 49 | %nonassoc '=' '<' '>' '~' '.' |
0b62c3a7 MM |
50 | %left '+' '-' |
51 | %left '*' '/' '%' | |
23b1539b | 52 | %left '!' |
0b62c3a7 | 53 | |
166b9c49 | 54 | CF_KEYWORDS(DEFINE, ON, OFF, YES, NO) |
0b62c3a7 | 55 | |
f142750d MM |
56 | CF_GRAMMAR |
57 | ||
0b62c3a7 MM |
58 | /* Basic config file structure */ |
59 | ||
bc2fb680 MM |
60 | config: conf_entries END { return 0; } |
61 | | CLI_MARKER cli_cmd END { return 0; } | |
f142750d MM |
62 | ; |
63 | ||
64 | conf_entries: | |
65 | /* EMPTY */ | |
7f400d1c | 66 | | conf_entries conf |
f142750d MM |
67 | ; |
68 | ||
7f400d1c | 69 | CF_ADDTO(conf, ';') |
f142750d | 70 | |
72380a34 | 71 | /* Constant expressions */ |
0b62c3a7 | 72 | |
c9b66706 | 73 | expr: |
0b62c3a7 | 74 | NUM |
c9b66706 MM |
75 | | expr '+' expr { $$ = $1 + $3; } |
76 | | expr '-' expr { $$ = $1 - $3; } | |
77 | | expr '*' expr { $$ = $1 * $3; } | |
78 | | expr '/' expr { if ($3) $$ = $1 / $3; else cf_error("Division by zero"); } | |
79 | | expr '%' expr { if ($3) $$ = $1 % $3; else cf_error("Division by zero"); } | |
80 | | '(' expr ')' { $$ = $2; } | |
0b62c3a7 MM |
81 | | SYM { if ($1->class != SYM_NUMBER) cf_error("Number expected"); else $$ = $1->aux; } |
82 | ; | |
83 | ||
84 | CF_ADDTO(conf, definition) | |
85 | definition: | |
7f400d1c | 86 | DEFINE SYM '=' expr ';' { |
0e02abfd | 87 | cf_define_symbol($2, SYM_NUMBER, NULL); |
0b62c3a7 MM |
88 | $2->aux = $4; |
89 | } | |
90 | ; | |
91 | ||
166b9c49 MM |
92 | /* Switches */ |
93 | ||
94 | bool: | |
c9b66706 | 95 | expr {$$ = !!$1; } |
166b9c49 MM |
96 | | ON { $$ = 1; } |
97 | | YES { $$ = 1; } | |
98 | | OFF { $$ = 0; } | |
99 | | NO { $$ = 0; } | |
100 | | /* Silence means agreement */ { $$ = 1; } | |
101 | ; | |
102 | ||
89d2355d MM |
103 | /* Prefixes and netmasks */ |
104 | ||
105 | pxlen: | |
106 | '/' NUM { | |
107 | if ($2 < 0 || $2 > 32) cf_error("Invalid prefix length %d", $2); | |
108 | $$ = $2; | |
109 | } | |
110 | | ':' IPA { | |
111 | $$ = ipa_mklen($2); | |
112 | if ($$ < 0) cf_error("Invalid netmask %I", $2); | |
113 | } | |
114 | ; | |
115 | ||
9d79fec8 PM |
116 | datetime: /* Return seconds from epoch, FIXME we want be more user friendly */ |
117 | NUM { $$ = $1; } | |
118 | ; | |
119 | ||
f142750d MM |
120 | CF_CODE |
121 | ||
122 | CF_END |