1 files changed, 58 insertions, 0 deletions
diff --git a/src/expect/build.c b/src/expect/build.c
new file mode 100644
index 0000000..501263a
--- /dev/null
+++ b/src/expect/build.c
@@ -0,0 +1,58 @@
+/*
+ * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+
+#include "internal.h"
+
+static void __build_timeout(struct nfnlhdr *req,
+			    size_t size,
+			    const struct nf_expect *exp)
+{
+	nfnl_addattr32(&req->nlh, size, CTA_EXPECT_TIMEOUT,htonl(exp->timeout));
+}
+
+int __build_expect(struct nfnl_subsys_handle *ssh,
+		   struct nfnlhdr *req,
+		   size_t size,
+		   u_int16_t type,
+		   u_int16_t flags,
+		   const struct nf_expect *exp)
+{
+	u_int8_t l3num = exp->master.tuple[NFCT_DIR_ORIGINAL].l3protonum;
+
+	if (!test_bit(ATTR_ORIG_L3PROTO, exp->master.set)) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	memset(req, 0, size);
+
+	nfnl_fill_hdr(ssh, &req->nlh, 0, l3num, 0, type, flags);
+
+	__build_tuple(req,
+		      size,
+		      &exp->expected.tuple[__DIR_ORIG],
+		      CTA_EXPECT_TUPLE);
+
+	/* get and delete only require the expectation tuple */
+	if (type == IPCTNL_MSG_EXP_GET || type == IPCTNL_MSG_EXP_DELETE)
+		return 0;
+
+	__build_tuple(req,
+		      size,
+		      &exp->master.tuple[__DIR_ORIG],
+		      CTA_EXPECT_MASTER);
+	
+	__build_tuple(req,
+		      size,
+		      &exp->mask.tuple[__DIR_ORIG],
+		      CTA_EXPECT_MASK);
+
+	if (test_bit(ATTR_EXP_TIMEOUT, exp->set))
+		__build_timeout(req, size, exp);
+
+	return 0;
+}