diff options
| -rw-r--r-- | filter/config.Y | 30 | ||||
| -rw-r--r-- | filter/f-util.c | 2 | ||||
| -rw-r--r-- | filter/filter.c | 13 | ||||
| -rw-r--r-- | filter/filter.h | 8 | ||||
| -rw-r--r-- | filter/test.conf | 9 |
5 files changed, 37 insertions, 25 deletions
diff --git a/filter/config.Y b/filter/config.Y index 540a85d..0a14856 100644 --- a/filter/config.Y +++ b/filter/config.Y @@ -10,6 +10,7 @@ FIXME: create community lists FIXME: write access to dynamic attributes. FIXME: '! =' should not be permitted. Ze `!=' by nemelo byt totez jako `! =' Nadefinujes si pres %token novy token a do cf-lex.l pridas nove pravidlo, ktere jej rozpoznava. Napriklad != return NEQ; + FIXME: write access to static attribute: Z rte ma byt read/write: pref, attrs (neprimo). */ @@ -229,21 +230,21 @@ switch_body: /* EMPTY */ { $$ = NULL; } ; constant: - CONST '(' expr ')' { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_INT; $$->a2.i = $3; } - | NUM { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_INT; $$->a2.i = $1; } - | TRUE { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_BOOL; $$->a2.i = 1; } - | FALSE { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_BOOL; $$->a2.i = 0; } - | TEXT { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_STRING; $$->a2.p = $1; } - | pair { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_PAIR; $$->a2.i = $1; } + CONST '(' expr ')' { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_INT; $$->a2.i = $3; } + | NUM { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_INT; $$->a2.i = $1; } + | TRUE { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_BOOL; $$->a2.i = 1; } + | FALSE { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_BOOL; $$->a2.i = 0; } + | TEXT { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_STRING; $$->a2.p = $1; } + | pair { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_PAIR; $$->a2.i = $1; } | ipa { NEW_F_VAL; $$ = f_new_inst(); $$->code = 'C'; $$->a1.p = val; *val = $1; } | prefix_s {NEW_F_VAL; $$ = f_new_inst(); $$->code = 'C'; $$->a1.p = val; *val = $1; } - | '[' set_items ']' { printf( "We've got a set here..." ); $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_SET; $$->a2.p = build_tree($2); printf( "ook\n" ); } - | ENUM { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = $1 >> 16; $$->a2.i = $1 & 0xffff; } + | '[' set_items ']' { printf( "We've got a set here..." ); $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_SET; $$->a2.p = build_tree($2); printf( "ook\n" ); } + | ENUM { $$ = f_new_inst(); $$->code = 'c'; $$->aux = $1 >> 16; $$->a2.i = $1 & 0xffff; } ; any_dynamic: - RIP_METRIC { $$ = f_new_inst(); $$->a1.i = T_INT; $$->a2.i = EA_RIP_METRIC;} - | RIP_TAG { $$ = f_new_inst(); $$->a1.i = T_INT; $$->a2.i = EA_RIP_TAG; } + RIP_METRIC { $$ = f_new_inst(); $$->aux = T_INT; $$->a2.i = EA_RIP_METRIC;} + | RIP_TAG { $$ = f_new_inst(); $$->aux = T_INT; $$->a2.i = EA_RIP_TAG; } ; @@ -283,8 +284,8 @@ term: | RTA '.' any_dynamic { $$ = $3; $$->code = 'ea'; } - | term '.' IP { $$ = f_new_inst(); $$->code = 'cp'; $$->a1.p = $1; $$->a2.i = T_IP; } - | term '.' LEN { $$ = f_new_inst(); $$->code = 'cp'; $$->a1.p = $1; $$->a2.i = T_INT; } + | term '.' IP { $$ = f_new_inst(); $$->code = 'cp'; $$->a1.p = $1; $$->aux = T_IP; } + | term '.' LEN { $$ = f_new_inst(); $$->code = 'cp'; $$->a1.p = $1; $$->aux = T_INT; } | term '.' MASK '(' term ')' { $$ = f_new_inst(); $$->code = 'iM'; $$->a1.p = $1; $$->a2.p = $5; } ; @@ -356,6 +357,11 @@ cmd: $$->a1.p = $1; $$->a2.p = $3; } + | RTA '.' any_dynamic '=' term ';' { + $$ = $3; + $$->code = 'eS'; + + } | break_command print_list ';' { $$ = f_new_inst(); $$->code = 'p,'; $$->a1.p = $2; $$->a2.i = $1; } | SYM '(' var_list ')' ';' { struct symbol *sym; diff --git a/filter/f-util.c b/filter/f-util.c index 40805f8..b070d95 100644 --- a/filter/f-util.c +++ b/filter/f-util.c @@ -27,7 +27,7 @@ f_new_inst(void) { struct f_inst * ret; ret = cfg_alloc(sizeof(struct f_inst)); - ret->code = 0; + ret->code = ret->aux = 0; ret->arg1 = ret->arg2 = ret->next = NULL; return ret; } diff --git a/filter/filter.c b/filter/filter.c index a26b9e6..458b876 100644 --- a/filter/filter.c +++ b/filter/filter.c @@ -250,7 +250,7 @@ interpret(struct f_inst *what) break; case 'c': /* integer (or simple type) constant */ - res.type = what->a1.i; + res.type = what->aux; res.val.i = what->a2.i; break; case 'C': @@ -284,7 +284,7 @@ interpret(struct f_inst *what) case F_ACCEPT: /* Should take care about turning ACCEPT into MODIFY */ case F_ERROR: - case F_REJECT: + case F_REJECT: /* FIXME (noncritical) Should print compele route along with reason to reject route */ res.type = T_RETURN; res.val.i = what->a1.i; break; @@ -298,11 +298,14 @@ interpret(struct f_inst *what) case 'a': /* rta access */ { struct rta *rta = (*f_rte)->attrs; - res.type = what->a1.i; + res.type = what->aux; switch(res.type) { case T_IP: res.val.px.ip = * (ip_addr *) ((char *) rta + what->a2.i); break; + case T_ENUM: + res.val.i = * ((char *) rta + what->a2.i); + break; case T_PREFIX: /* Warning: this works only for prefix of network */ { res.val.px.ip = (*f_rte)->net->n.prefix; @@ -321,7 +324,7 @@ interpret(struct f_inst *what) res.type = T_VOID; break; } - res.type = what->a1.i; + res.type = what->aux; switch (what->a1.i) { case T_INT: res.val.i = e->u.data; @@ -333,7 +336,7 @@ interpret(struct f_inst *what) ONEARG; if (v1.type != T_PREFIX) runtime( "Can not convert non-prefix this way" ); - res.type = what->a2.i; + res.type = what->aux; switch(res.type) { case T_INT: res.val.i = v1.val.px.len; break; case T_IP: res.val.px.ip = v1.val.px.ip; break; diff --git a/filter/filter.h b/filter/filter.h index 189b226..a62cb24 100644 --- a/filter/filter.h +++ b/filter/filter.h @@ -14,7 +14,8 @@ struct f_inst { /* Instruction */ struct f_inst *next; /* Structure is 16 bytes, anyway */ - int code; + u16 code; + u16 aux; union { int i; void *p; @@ -85,8 +86,9 @@ void val_print(struct f_val v); #define T_MASK 0xff /* Internal types */ -#define T_VOID 0 -#define T_RETURN 1 +/* Do not use type of zero, that way we'll see errors easier. */ +#define T_VOID 1 +#define T_RETURN 2 /* User visible types, which fit in int */ #define T_INT 0x10 diff --git a/filter/test.conf b/filter/test.conf index 97aaf8f..837c423 100644 --- a/filter/test.conf +++ b/filter/test.conf @@ -66,12 +66,13 @@ ip p; filter testf int j; { - print "Heya, filtering route to " rta.net.ip " prefixlen " rta.net.len; + print "Heya, filtering route to " rta.net.ip " prefixlen " rta.net.len " source " rta.source; print "This route was from " rta.from; j = 7; j = 17; - if rta.rip_metric > 15 then - print "RIP Metric is more than infinity"; + if rta.rip_metric > 15 then { + reject "RIP Metric is more than infinity"; + } - accept; + accept "ok I take that"; } |