diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-21 15:05:58 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-07-21 15:05:58 +0200 |
commit | 1c29dd9a9e2f83ffb02e50bb3619c3b9db8fd526 (patch) | |
tree | b5691dd5aa48ac32fdbaef44afcbcc92f01592d3 /net/netfilter/xt_string.c | |
parent | 32172561889868c0ea422ea8570f0413963a815f (diff) | |
parent | 14b395e35d1afdd8019d11b92e28041fad591b71 (diff) |
Merge branch 'linus' into x86/paravirt-spinlocks
Diffstat (limited to 'net/netfilter/xt_string.c')
-rw-r--r-- | net/netfilter/xt_string.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c index 72f694d947f..4903182a062 100644 --- a/net/netfilter/xt_string.c +++ b/net/netfilter/xt_string.c @@ -29,12 +29,16 @@ string_mt(const struct sk_buff *skb, const struct net_device *in, { const struct xt_string_info *conf = matchinfo; struct ts_state state; + int invert; memset(&state, 0, sizeof(struct ts_state)); + invert = (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) - != UINT_MAX) ^ conf->invert; + != UINT_MAX) ^ invert; } #define STRING_TEXT_PRIV(m) ((struct xt_string_info *)(m)) @@ -46,6 +50,7 @@ string_mt_check(const char *tablename, const void *ip, { struct xt_string_info *conf = matchinfo; 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) @@ -54,8 +59,15 @@ string_mt_check(const char *tablename, const void *ip, return false; if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE) return false; + if (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, - GFP_KERNEL, TS_AUTOLOAD); + GFP_KERNEL, flags); if (IS_ERR(ts_conf)) return false; @@ -72,6 +84,17 @@ static void string_mt_destroy(const struct xt_match *match, void *matchinfo) static struct xt_match string_mt_reg[] __read_mostly = { { .name = "string", + .revision = 0, + .family = AF_INET, + .checkentry = string_mt_check, + .match = string_mt, + .destroy = string_mt_destroy, + .matchsize = sizeof(struct xt_string_info), + .me = THIS_MODULE + }, + { + .name = "string", + .revision = 1, .family = AF_INET, .checkentry = string_mt_check, .match = string_mt, @@ -81,6 +104,17 @@ static struct xt_match string_mt_reg[] __read_mostly = { }, { .name = "string", + .revision = 0, + .family = AF_INET6, + .checkentry = string_mt_check, + .match = string_mt, + .destroy = string_mt_destroy, + .matchsize = sizeof(struct xt_string_info), + .me = THIS_MODULE + }, + { + .name = "string", + .revision = 1, .family = AF_INET6, .checkentry = string_mt_check, .match = string_mt, |