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netfilter: xtables: move extension arguments into compound structure (3/6)
[deliverable/linux.git]
/
net
/
netfilter
/
xt_string.c
diff --git
a/net/netfilter/xt_string.c
b/net/netfilter/xt_string.c
index 864133442cdac6c35f0f50edb81664565bf65b47..b4d7741113115330bc4ae6d5a6df35d6ae14f4cd 100644
(file)
--- a/
net/netfilter/xt_string.c
+++ b/
net/netfilter/xt_string.c
@@
-16,40
+16,35
@@
#include <linux/textsearch.h>
MODULE_AUTHOR("Pablo Neira Ayuso <pablo@eurodev.net>");
#include <linux/textsearch.h>
MODULE_AUTHOR("Pablo Neira Ayuso <pablo@eurodev.net>");
-MODULE_DESCRIPTION("
IP tables string match module
");
+MODULE_DESCRIPTION("
Xtables: string-based matching
");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_string");
MODULE_ALIAS("ip6t_string");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_string");
MODULE_ALIAS("ip6t_string");
-static bool match(const struct sk_buff *skb,
- const struct net_device *in,
- const struct net_device *out,
- const struct xt_match *match,
- const void *matchinfo,
- int offset,
- unsigned int protoff,
- bool *hotdrop)
+static bool
+string_mt(const struct sk_buff *skb, const struct xt_match_param *par)
{
{
- const struct xt_string_info *conf = matchinfo;
+ const struct xt_string_info *conf =
par->
matchinfo;
struct ts_state state;
struct ts_state state;
+ int invert;
memset(&state, 0, sizeof(struct ts_state));
memset(&state, 0, sizeof(struct ts_state));
+ invert = (par->match->revision == 0 ? conf->u.v0.invert :
+ conf->u.v1.flags & XT_STRING_FLAG_INVERT);
+
return (skb_find_text((struct sk_buff *)skb, conf->from_offset,
conf->to_offset, conf->config, &state)
return (skb_find_text((struct sk_buff *)skb, conf->from_offset,
conf->to_offset, conf->config, &state)
- != UINT_MAX) ^
conf->
invert;
+ != UINT_MAX) ^ invert;
}
}
-#define STRING_TEXT_PRIV(m) ((struct xt_string_info *)
m
)
+#define STRING_TEXT_PRIV(m) ((struct xt_string_info *)
(m)
)
-static bool checkentry(const char *tablename,
- const void *ip,
- const struct xt_match *match,
- void *matchinfo,
- unsigned int hook_mask)
+static bool string_mt_check(const struct xt_mtchk_param *par)
{
{
- struct xt_string_info *conf = matchinfo;
+ struct xt_string_info *conf =
par->
matchinfo;
struct ts_config *ts_conf;
struct ts_config *ts_conf;
+ int flags = TS_AUTOLOAD;
/* Damn, can't handle this case properly with iptables... */
if (conf->from_offset > conf->to_offset)
/* Damn, can't handle this case properly with iptables... */
if (conf->from_offset > conf->to_offset)
@@
-58,8
+53,15
@@
static bool checkentry(const char *tablename,
return false;
if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE)
return false;
return false;
if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE)
return false;
+ if (par->match->revision == 1) {
+ if (conf->u.v1.flags &
+ ~(XT_STRING_FLAG_IGNORECASE | XT_STRING_FLAG_INVERT))
+ return false;
+ if (conf->u.v1.flags & XT_STRING_FLAG_IGNORECASE)
+ flags |= TS_IGNORECASE;
+ }
ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen,
ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen,
- GFP_KERNEL,
TS_AUTOLOAD
);
+ GFP_KERNEL,
flags
);
if (IS_ERR(ts_conf))
return false;
if (IS_ERR(ts_conf))
return false;
@@
-68,41
+70,44
@@
static bool checkentry(const char *tablename,
return true;
}
return true;
}
-static void
destroy(const struct xt_match *match, void *matchinfo
)
+static void
string_mt_destroy(const struct xt_mtdtor_param *par
)
{
{
- textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config);
+ textsearch_destroy(STRING_TEXT_PRIV(
par->
matchinfo)->config);
}
}
-static struct xt_match xt_string_m
atch
[] __read_mostly = {
+static struct xt_match xt_string_m
t_reg
[] __read_mostly = {
{
.name = "string",
{
.name = "string",
- .family = AF_INET,
- .checkentry = checkentry,
- .match = match,
- .destroy = destroy,
+ .revision = 0,
+ .family = NFPROTO_UNSPEC,
+ .checkentry = string_mt_check,
+ .match = string_mt,
+ .destroy = string_mt_destroy,
.matchsize = sizeof(struct xt_string_info),
.me = THIS_MODULE
},
{
.name = "string",
.matchsize = sizeof(struct xt_string_info),
.me = THIS_MODULE
},
{
.name = "string",
- .family = AF_INET6,
- .checkentry = checkentry,
- .match = match,
- .destroy = destroy,
+ .revision = 1,
+ .family = NFPROTO_UNSPEC,
+ .checkentry = string_mt_check,
+ .match = string_mt,
+ .destroy = string_mt_destroy,
.matchsize = sizeof(struct xt_string_info),
.me = THIS_MODULE
},
};
.matchsize = sizeof(struct xt_string_info),
.me = THIS_MODULE
},
};
-static int __init
xt_string
_init(void)
+static int __init
string_mt
_init(void)
{
{
- return xt_register_matches(xt_string_match, ARRAY_SIZE(xt_string_match));
+ return xt_register_matches(xt_string_mt_reg,
+ ARRAY_SIZE(xt_string_mt_reg));
}
}
-static void __exit
xt_string_fini
(void)
+static void __exit
string_mt_exit
(void)
{
{
- xt_unregister_matches(xt_string_m
atch, ARRAY_SIZE(xt_string_match
));
+ xt_unregister_matches(xt_string_m
t_reg, ARRAY_SIZE(xt_string_mt_reg
));
}
}
-module_init(
xt_string
_init);
-module_exit(
xt_string_fini
);
+module_init(
string_mt
_init);
+module_exit(
string_mt_exit
);
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