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filter_same() implemented. Don't bet on it, yet.

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This commit is contained in:
Pavel Machek 2000-01-31 17:44:22 +00:00
parent 70844a6a46
commit 9a4037d408
4 changed files with 115 additions and 23 deletions
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113
filter/filter.c
View file

@ -28,25 +28,6 @@
struct f_inst *startup_func = NULL;
#define runtime(x) do { \
log( L_ERR x ); \
res.type = T_RETURN; \
res.val.i = F_ERROR; \
return res; \
} while(0)
#define ARG(x,y) \
x = interpret(what->y); \
if (x.type == T_RETURN) \
return x;
#define ONEARG ARG(v1, a1.p)
#define TWOARGS ARG(v1, a1.p) \
ARG(v2, a2.p)
#define TWOARGS_C TWOARGS \
if (v1.type != v2.type) \
runtime( "Can not operate with values of incompatible types" );
#define CMP_ERROR 999
/* Compare two values, returns -1, 0, 1 compared, ERROR 999 */
@ -160,7 +141,24 @@ val_print(struct f_val v)
static struct rte **f_rte, *f_rte_old;
static struct linpool *f_pool;
static struct f_val interpret(struct f_inst *what);
#define runtime(x) do { \
log( L_ERR x ); \
res.type = T_RETURN; \
res.val.i = F_ERROR; \
return res; \
} while(0)
#define ARG(x,y) \
x = interpret(what->y); \
if (x.type == T_RETURN) \
return x;
#define ONEARG ARG(v1, a1.p)
#define TWOARGS ARG(v1, a1.p) \
ARG(v2, a2.p)
#define TWOARGS_C TWOARGS \
if (v1.type != v2.type) \
runtime( "Can not operate with values of incompatible types" );
static struct f_val
interpret(struct f_inst *what)
@ -412,6 +410,77 @@ interpret(struct f_inst *what)
return res;
}
#define ARG(x,y) \
if (!i_same(f1->y, f2->y)) \
return 0;
#define ONEARG ARG(v1, a1.p)
#define TWOARGS ARG(v1, a1.p) \
ARG(v2, a2.p)
#define A2_SAME if (f1->a2.i != f2->a2.i) return 0;
int
i_same(struct f_inst *f1, struct f_inst *f2)
{
if (!f1)
return 1;
if ((!!f1) != (!!f2))
return 0;
if (f1->aux != f2->aux)
return 0;
if (f1->code != f2->code)
return 0;
switch(f1->code) {
case ',': /* fall through */
case '+':
case '/':
case '!=':
case '==':
case '<':
case '<=': TWOARGS; break;
case '~': TWOARGS; break;
case 'de': ONEARG; break;
case 's':
ARG(v2, a2.p);
{
struct symbol *s1, *s2;
s1 = f1->a1.p;
s2 = f2->a1.p;
if (strcmp(s1->name, s2->name))
return 0;
if (s1->class != s2->class)
return 0;
}
break;
case 'c': A2_SAME; break;
case 'C':
if (val_compare(* (struct f_val *) f1->a1.p, * (struct f_val *) f2->a2.p))
return 0;
break;
case 'p': ONEARG; break;
case '?': TWOARGS; break;
case '0': break;
case 'p,': ONEARG; A2_SAME; break;
case 'a': A2_SAME; break;
case 'ea': A2_SAME; break;
case 'eS': ONEARG; A2_SAME; break;
case 'cp': ONEARG; break;
case 'ca': /* CALL, FIXME: exponential in some cases */
ONEARG; if (!i_same(f1->a2.p, f2->a2.p)) return 0; break;
case 'SW': ONEARG; if (!same_tree(f1->a2.p, f2->a2.p)) return 0; break;
case 'iM': TWOARGS; break;
default:
bug( "Unknown instruction %d in same (%c)", f1->code, f1->code & 0xff);
}
return i_same(f1->next, f2->next);
}
/* FIXME: tmp_attrs is unreferenced. That can't be right */
int
f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struct linpool *tmp_pool)
@ -432,6 +501,7 @@ f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, struc
}
void
filters_postconfig(void)
{
@ -448,6 +518,5 @@ filters_postconfig(void)
int
filter_same(struct filter *new, struct filter *old)
{
/* FIXME: This has to be defined! */
return new == old;
return i_same(new->root, old->root);
}

3
filter/filter.h
View file

@ -61,6 +61,7 @@ struct f_tree *f_new_tree(void);
struct f_tree *build_tree(struct f_tree *);
struct f_tree *find_tree(struct f_tree *t, struct f_val val);
int same_tree(struct f_tree *t1, struct f_tree *t2);
struct ea_list;
struct rte;
@ -69,6 +70,8 @@ int f_run(struct filter *filter, struct rte **rte, struct ea_list **tmp_attrs, s
char *filter_name(struct filter *filter);
int filter_same(struct filter *new, struct filter *old);
int i_same(struct f_inst *f1, struct f_inst *f2);
int val_compare(struct f_val v1, struct f_val v2);
void val_print(struct f_val v);

2
filter/test.conf
View file

@ -42,7 +42,7 @@ ip p;
print " data types: must be false: " 1 ~ [ 2, 3, 4 ] "," 5 ~ [ 2, 3, 4, 7..11 ] "," 1.2.3.4 ~ [ 1.2.3.3, 1.2.3.5 ] "," (1,2) > (2,2) "," (1,1) > (1,1) "," 1.0.0.0/8 ~ [ 1.0.0.0/8- ] "," 1.2.0.0/17 ~ [ 1.0.0.0/8{ 15 , 16 } ];
px = 1.2.0.0/18;
print "Testing prefixes: 1.0.0.0/18 = " px;
print "Testing prefixes: 1.2.0.0/18 = " px;
p = 127.1.2.3;
print "Testing mask : 127.0.0.0 = " p.mask(8);
print "Testing pairs: (1,2) = " (1,2);

20
filter/tree.c
View file

@ -123,3 +123,23 @@ f_new_tree(void)
ret->data = NULL;
return ret;
}
int
same_tree(struct f_tree *t1, struct f_tree *t2)
{
if ((!!t1) != (!!t2))
return 0;
if (!t1)
return 1;
if (val_compare(t1->from, t2->from))
return 0;
if (val_compare(t1->to, t2->to))
return 0;
if (!same_tree(t1->left, t2->left))
return 0;
if (!same_tree(t1->right, t2->right))
return 0;
if (!i_same(t1->data, t2->data))
return 0;
return 1;
}