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Renamed f_path to f_path_mask -- which is what it really is. Use

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linklist instead of array of signed integers for path mask.
This commit is contained in:
Pavel Machek 2000-04-12 13:07:53 +00:00
parent c3edb89ec1
commit dcab789047
4 changed files with 25 additions and 23 deletions
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2
conf/confbase.Y
View file

@ -35,7 +35,7 @@ CF_DECLS
struct filter *f;
struct f_tree *e;
struct f_val v;
struct f_path *h;
struct f_path_mask *h;
struct password_item *p;
struct rt_show_data *ra;
void *g;

15
filter/config.Y
View file

@ -106,7 +106,7 @@ type:
| PREFIX { $$ = T_PREFIX; }
| PAIR { $$ = T_PAIR; }
| STRING { $$ = T_STRING; }
| BGP_PATH { $$ = T_PATH; }
| BGP_PATH { $$ = T_PATH_MASK; }
| type SET {
switch ($1) {
default:
@ -313,8 +313,8 @@ bgp_one:
;
bgp_path:
bgp_one { $$ = cfg_alloc(sizeof(struct f_path)); $$->next = NULL; $$->val = $1; }
| bgp_one bgp_path { $$ = cfg_alloc(sizeof(struct f_path)); $$->next = $2; $$->val = $1; }
bgp_one { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = NULL; $$->val = $1; }
| bgp_one bgp_path { $$ = cfg_alloc(sizeof(struct f_path_mask)); $$->next = $2; $$->val = $1; }
;
constant:
@ -327,7 +327,7 @@ constant:
| prefix_s {NEW_F_VAL; $$ = f_new_inst(); $$->code = 'C'; $$->a1.p = val; *val = $1; }
| '[' set_items ']' { DBG( "We've got a set here..." ); $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_SET; $$->a2.p = build_tree($2); DBG( "ook\n" ); }
| ENUM { $$ = f_new_inst(); $$->code = 'c'; $$->aux = $1 >> 16; $$->a2.i = $1 & 0xffff; }
| '/' bgp_path '/' { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_PATH; $$->a2.p = $2; }
| '/' bgp_path '/' { $$ = f_new_inst(); $$->code = 'c'; $$->aux = T_PATH_MASK; $$->a2.p = $2; }
;
/*
@ -384,7 +384,7 @@ term:
case SYM_VARIABLE | T_PAIR:
case SYM_VARIABLE | T_PREFIX:
case SYM_VARIABLE | T_IP:
case SYM_VARIABLE | T_PATH:
case SYM_VARIABLE | T_PATH_MASK:
$$->code = 'C';
$$->a1.p = $1->aux2;
break;
@ -413,8 +413,9 @@ term:
| term '.' RESET { }
/* Paths */
| term '.' APPEND '(' term ')' { }
/* | term '.' LEN { } Hmm, this would colide with ip.len. What to do with that? */
| rtadot PATH '~' term { }
| rtadot PATH '.' APPEND '(' term ')' { }
| rtadot PATH '.' LEN { $$->code = P('P','l'); }
/* function_call is inlined here */
| SYM '(' var_list ')' {

25
filter/filter.c
View file

@ -133,7 +133,7 @@ val_print(struct f_val v)
case T_PAIR: PRINTF( "(%d,%d)", v.val.i >> 16, v.val.i & 0xffff ); break;
case T_SET: tree_print( v.val.t ); PRINTF( "\n" ); break;
case T_ENUM: PRINTF( "(enum %x)%d", v.type, v.val.i ); break;
case T_PATH: debug( "(path " ); { struct f_path *p = v.val.s; while (p) { debug("%d ", p->val); p=p->next; } debug(")" ); } break;
case T_PATH_MASK: debug( "(path " ); { struct f_path_mask *p = v.val.s; while (p) { debug("%d ", p->val); p=p->next; } debug(")" ); } break;
default: PRINTF( "[unknown type %x]", v.type );
#undef PRINTF
}
@ -249,7 +249,7 @@ interpret(struct f_inst *what)
case T_IP:
case T_PREFIX:
case T_PAIR:
case T_PATH:
case T_PATH_MASK:
if (sym->class != (SYM_VARIABLE | v2.type))
runtime( "Variable of bad type" );
* (struct f_val *) sym->aux2 = v2;
@ -643,13 +643,14 @@ path_format(u8 *p, int len)
#define PM_END -1
#define PM_ASTERIX -2
#define MASK_PLUS do { if (*++mask == PM_END) return next == q; \
asterix = (*mask == PM_ASTERIX); \
#define MASK_PLUS do { mask = mask->next; if (mask->val == PM_END) return next == q; \
asterix = (mask->val == PM_ASTERIX); \
printf( "Asterix now %d\n", asterix ); \
if (asterix) { if (*++mask == PM_END) { printf( "Quick exit\n" ); return 1; } } \
if (asterix) { mask = mask->next; if (mask->val == PM_END) { printf( "Quick exit\n" ); return 1; } } \
} while(0)
int
path_match(u8 *p, int len, s32 *mask)
path_match(u8 *p, int len, struct f_path_mask *mask)
{
int i;
int asterix = 0;
@ -666,11 +667,11 @@ path_match(u8 *p, int len, s32 *mask)
retry:
p = p_save;
for (i=0; i<len; i++) {
if (asterix && (get_u16(p) == *mask)) {
if (asterix && (get_u16(p) == mask->val)) {
MASK_PLUS;
goto retry;
}
if (!asterix && (get_u16(p) == *mask)) {
if (!asterix && (get_u16(p) == mask->val)) {
p = next;
MASK_PLUS;
goto okay;
@ -687,10 +688,10 @@ path_match(u8 *p, int len, s32 *mask)
len = *p++;
for (i=0; i<len; i++) {
next = p+2;
if (asterix && (get_u16(p) == *mask))
if (asterix && (get_u16(p) == mask->val))
MASK_PLUS;
else if (!asterix) {
if (get_u16(p) != *mask)
if (get_u16(p) != mask->val)
return 0;
MASK_PLUS;
}
@ -767,7 +768,7 @@ self_test(void)
DBG( "%s\n", path_format(path1, sizeof(path1)) );
DBG( "%s\n", path_format(path2, sizeof(path2)) );
DBG( "5, 6 = %d, %d\n", path_getlen(path1, sizeof(path1)), path_getlen(path2, sizeof(path2)) );
DBG( "%d\n", path_match(path1, sizeof(path1), match));
DBG( "%d\n", path_match(path2, sizeof(path2), match));
// DBG( "%d\n", path_match(path1, sizeof(path1), match));
// DBG( "%d\n", path_match(path2, sizeof(path2), match));
// die( "okay" );
}

6
filter/filter.h
View file

@ -50,8 +50,8 @@ struct f_val {
} val;
};
struct f_path {
struct f_path *next;
struct f_path_mask {
struct f_path_mask *next;
int val;
};
@ -115,7 +115,7 @@ void val_print(struct f_val v);
#define T_IP 0x20
#define T_PREFIX 0x21
#define T_STRING 0x22
#define T_PATH 0x23 /* BGP path */
#define T_PATH_MASK 0x23 /* mask for BGP path */
#define T_RETURN 0x40
#define T_SET 0x80