mirror/labs-bird
1
0
Fork 0
mirror of https://gitlab.labs.nic.cz/labs/bird.git synced 2024-05-11 16:54:54 +00:00
Code Releases Activity

as_path_match moved to a-path.c

Browse Source
This commit is contained in:
Pavel Machek
2000-04-17 11:11:33 +00:00
parent 684c6f5a0e
commit 2a40efa5e6
3 changed files with 76 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
nest/a-path.c
View File

@@ -99,3 +99,70 @@ as_path_getlen(struct adata *path)
}
return res;
}
#define MASK_PLUS do { mask = mask->next; if (!mask) return next == q; \
asterix = (mask->val == PM_ANY); \
if (asterix) { mask = mask->next; if (!mask) { return 1; } } \
} while(0)
int
as_path_match(struct adata *path, struct f_path_mask *mask)
{
int i;
int asterix = 0;
u8 *p = path->data;
u8 *q = p+path->length;
int len;
u8 *next;
asterix = (mask->val == PM_ANY);
if (asterix) { mask = mask->next; if (!mask) { return 1; } }
while (p<q) {
switch (*p++) {
case 1: /* This is a set */
len = *p++;
{
u8 *p_save = p;
next = p_save + 2*len;
retry:
p = p_save;
for (i=0; i<len; i++) {
if (asterix && (get_u16(p) == mask->val)) {
MASK_PLUS;
goto retry;
}
if (!asterix && (get_u16(p) == mask->val)) {
p = next;
MASK_PLUS;
goto okay;
}
p+=2;
}
if (!asterix)
return 0;
okay:
}
break;
case 2: /* This is a sequence */
len = *p++;
for (i=0; i<len; i++) {
next = p+2;
if (asterix && (get_u16(p) == mask->val))
MASK_PLUS;
else if (!asterix) {
if (get_u16(p) != mask->val)
return 0;
MASK_PLUS;
}
p+=2;
}
break;
default:
bug("This should not be in path");
}
}
return 0;
}

8
nest/attrs.h
View File

@@ -18,6 +18,14 @@ struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, int as);
void as_path_format(struct adata *path, byte *buf, unsigned int size);
int as_path_getlen(struct adata *path);
struct f_path_mask {
struct f_path_mask *next;
int val;
};
#define PM_ANY -1
int as_path_match(struct adata *path, struct f_path_mask *mask);
/* a-set.c */
void int_set_format(struct adata *set, byte *buf, unsigned int size);