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Simplifies val_in_range().

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Also fixes missing type check for element ~ set.
This commit is contained in:
Ondrej Zajicek 2013-10-02 11:42:46 +02:00
parent ec57bbf67f
commit b655596d1d
2 changed files with 42 additions and 59 deletions
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93
filter/filter.c
View File

@ -220,39 +220,6 @@ fprefix_get_bounds(struct f_prefix *px, int *l, int *h)
}
}
/*
* val_simple_in_range - check if @v1 ~ @v2 for everything except sets
*/
static int
val_simple_in_range(struct f_val v1, struct f_val v2)
{
if ((v1.type == T_PATH) && (v2.type == T_PATH_MASK))
return as_path_match(v1.val.ad, v2.val.path_mask);
if ((v1.type == T_INT) && (v2.type == T_PATH))
return as_path_is_member(v2.val.ad, v1.val.i);
if (((v1.type == T_PAIR) || (v1.type == T_QUAD)) && (v2.type == T_CLIST))
return int_set_contains(v2.val.ad, v1.val.i);
#ifndef IPV6
/* IP->Quad implicit conversion */
if ((v1.type == T_IP) && (v2.type == T_CLIST))
return int_set_contains(v2.val.ad, ipa_to_u32(v1.val.px.ip));
#endif
if ((v1.type == T_EC) && (v2.type == T_ECLIST))
return ec_set_contains(v2.val.ad, v1.val.ec);
if ((v1.type == T_STRING) && (v2.type == T_STRING))
return patmatch(v2.val.s, v1.val.s);
if ((v1.type == T_IP) && (v2.type == T_PREFIX))
return ipa_in_net(v1.val.px.ip, v2.val.px.ip, v2.val.px.len);
if ((v1.type == T_PREFIX) && (v2.type == T_PREFIX))
return net_in_net(v1.val.px.ip, v1.val.px.len, v2.val.px.ip, v2.val.px.len);
return CMP_ERROR;
}
static int
clist_set_type(struct f_tree *set, struct f_val *v)
{
@ -396,47 +363,57 @@ eclist_filter(struct linpool *pool, struct adata *list, struct f_val set, int po
* @v1: element
* @v2: set
*
* Checks if @v1 is element (|~| operator) of @v2. Sets are internally represented as balanced trees, see
* |tree.c| module (this is not limited to sets, but for non-set cases, val_simple_in_range() is called early).
* Checks if @v1 is element (|~| operator) of @v2.
*/
static int
val_in_range(struct f_val v1, struct f_val v2)
{
int res;
if ((v1.type == T_PATH) && (v2.type == T_PATH_MASK))
return as_path_match(v1.val.ad, v2.val.path_mask);
res = val_simple_in_range(v1, v2);
if ((v1.type == T_INT) && (v2.type == T_PATH))
return as_path_is_member(v2.val.ad, v1.val.i);
if (res != CMP_ERROR)
return res;
if (((v1.type == T_PAIR) || (v1.type == T_QUAD)) && (v2.type == T_CLIST))
return int_set_contains(v2.val.ad, v1.val.i);
#ifndef IPV6
/* IP->Quad implicit conversion */
if ((v1.type == T_IP) && (v2.type == T_CLIST))
return int_set_contains(v2.val.ad, ipa_to_u32(v1.val.px.ip));
#endif
if ((v1.type == T_EC) && (v2.type == T_ECLIST))
return ec_set_contains(v2.val.ad, v1.val.ec);
if ((v1.type == T_STRING) && (v2.type == T_STRING))
return patmatch(v2.val.s, v1.val.s);
if ((v1.type == T_IP) && (v2.type == T_PREFIX))
return ipa_in_net(v1.val.px.ip, v2.val.px.ip, v2.val.px.len);
if ((v1.type == T_PREFIX) && (v2.type == T_PREFIX))
return net_in_net(v1.val.px.ip, v1.val.px.len, v2.val.px.ip, v2.val.px.len);
if ((v1.type == T_PREFIX) && (v2.type == T_PREFIX_SET))
return trie_match_fprefix(v2.val.ti, &v1.val.px);
if ((v1.type == T_CLIST) && (v2.type == T_SET))
if (v2.type != T_SET)
return CMP_ERROR;
/* With integrated Quad<->IP implicit conversion */
if ((v1.type == v2.val.t->from.type) ||
((IP_VERSION == 4) && (v1.type == T_QUAD) && (v2.val.t->from.type == T_IP)))
return !!find_tree(v2.val.t, v1);
if (v1.type == T_CLIST)
return clist_match_set(v1.val.ad, v2.val.t);
if ((v1.type == T_ECLIST) && (v2.type == T_SET))
if (v1.type == T_ECLIST)
return eclist_match_set(v1.val.ad, v2.val.t);
if ((v1.type == T_PATH) && (v2.type == T_SET))
if (v1.type == T_PATH)
return as_path_match_set(v1.val.ad, v2.val.t);
if (v2.type == T_SET)
switch (v1.type) {
case T_ENUM:
case T_INT:
case T_PAIR:
case T_QUAD:
case T_IP:
case T_EC:
{
struct f_tree *n;
n = find_tree(v2.val.t, v1);
if (!n)
return 0;
return !! (val_simple_in_range(v1, n->from)); /* We turn CMP_ERROR into compared ok, and that's fine */
}
}
return CMP_ERROR;
}

6
lib/birdlib.h
View File

@ -34,6 +34,12 @@
#define NULL ((void *) 0)
#endif
#ifndef IPV6
#define IP_VERSION 4
#else
#define IP_VERSION 6
#endif
/* Macros for gcc attributes */
#define NORET __attribute__((noreturn))