diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-04-26 19:37:03 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-06-26 17:26:30 +0200 |
| commit | 20cd0222c910e96c378e091e64b71d26e48916fe (patch) | |
| tree | 377a770f8d42fb9fcab12cd9e3db7fe8212592f6 /src/conntrack/copy.c | |
| parent | c69752e3dbf757aac336f4287eca11afef62a85c (diff) | |
conntrack: add nfct_set_attr_l and ATTR_HELPER_INFO
This adds the ATTR_HELPER_INFO that can be used to send binary data
that will be attached to the conntrack. This is useful for the
user-space connection tracking support.
This patch also adds a new interface:
nfct_set_attr_l(attr, type, value, length);
that is used to set the variable length helper information.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/conntrack/copy.c')
| -rw-r--r-- | src/conntrack/copy.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/conntrack/copy.c b/src/conntrack/copy.c index 3c47b15..a6aa9f7 100644 --- a/src/conntrack/copy.c +++ b/src/conntrack/copy.c @@ -434,6 +434,22 @@ static void copy_attr_timestamp_stop(struct nf_conntrack *dest, dest->timestamp.stop = orig->timestamp.stop; } +static void copy_attr_help_info(struct nf_conntrack *dest, + const struct nf_conntrack *orig) +{ + if (orig->helper_info == NULL) + return; + + if (dest->helper_info != NULL) + free(dest->helper_info); + + dest->helper_info = calloc(1, orig->helper_info_len); + if (dest->helper_info == NULL) + return; + + memcpy(dest->helper_info, orig->helper_info, orig->helper_info_len); +} + const copy_attr copy_attr_array[ATTR_MAX] = { [ATTR_ORIG_IPV4_SRC] = copy_attr_orig_ipv4_src, [ATTR_ORIG_IPV4_DST] = copy_attr_orig_ipv4_dst, @@ -500,6 +516,7 @@ const copy_attr copy_attr_array[ATTR_MAX] = { [ATTR_SECCTX] = copy_attr_secctx, [ATTR_TIMESTAMP_START] = copy_attr_timestamp_start, [ATTR_TIMESTAMP_STOP] = copy_attr_timestamp_stop, + [ATTR_HELPER_INFO] = copy_attr_help_info, }; /* this is used by nfct_copy() with the NFCT_CP_OVERRIDE flag set. */ |