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authorJoonwoo Park <joonwpark81@gmail.com>2008-07-08 02:38:56 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-08 02:38:56 -0700
commit4ad3f26162ece5aca3045fd45e15dd99acea4a0e (patch)
tree05c0db40febdc89055f2572bc0cf42388f798ead /include
parentdde77e604497dada6f224a685278dfb27747ae52 (diff)
netfilter: fix string extension for case insensitive pattern matching
The flag XT_STRING_FLAG_IGNORECASE indicates case insensitive string matching. netfilter can find cmd.exe, Cmd.exe, cMd.exe and etc easily. A new revision 1 was added, in the meantime invert of xt_string_info was moved into flags as a flag. If revision is 1, The flag XT_STRING_FLAG_INVERT indicates invert matching. Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netfilter/xt_string.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/netfilter/xt_string.h b/include/linux/netfilter/xt_string.h
index bb21dd1aee2..8a6ba7bbef9 100644
--- a/include/linux/netfilter/xt_string.h
+++ b/include/linux/netfilter/xt_string.h
@@ -4,6 +4,11 @@
#define XT_STRING_MAX_PATTERN_SIZE 128
#define XT_STRING_MAX_ALGO_NAME_SIZE 16
+enum {
+ XT_STRING_FLAG_INVERT = 0x01,
+ XT_STRING_FLAG_IGNORECASE = 0x02
+};
+
struct xt_string_info
{
u_int16_t from_offset;
@@ -11,7 +16,15 @@ struct xt_string_info
char algo[XT_STRING_MAX_ALGO_NAME_SIZE];
char pattern[XT_STRING_MAX_PATTERN_SIZE];
u_int8_t patlen;
- u_int8_t invert;
+ union {
+ struct {
+ u_int8_t invert;
+ } v0;
+
+ struct {
+ u_int8_t flags;
+ } v1;
+ } u;
/* Used internally by the kernel */
struct ts_config __attribute__((aligned(8))) *config;