Squashed 'third_party/lksctp-tools/' content from commit 200eca7f1
Change-Id: I8f7575513f114b205178cac5c6b3706f3d725cb5
git-subtree-dir: third_party/lksctp-tools
git-subtree-split: 200eca7f1419b1ae53958b51e8551f7e7f6cd467
diff --git a/src/withsctp/sctp_sockopt.c b/src/withsctp/sctp_sockopt.c
new file mode 100644
index 0000000..01b8308
--- /dev/null
+++ b/src/withsctp/sctp_sockopt.c
@@ -0,0 +1,56 @@
+/* Wrap socket() to force the protocol to SCTP for STREAM connections.
+ *
+ * Thanks to Midgard Security Services for
+ * http://www.securiteam.com/tools/3D5PTR5QAE.html
+ * from whence I cribbed the code to find the old socket().
+ *
+ * Copyright 2003 La Monte HP Yarroll <piggy@acm.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <string.h> /* for strncmp() */
+#include <stdio.h>
+#include "sctp_socket.h"
+
+/* IPPROTO_SCTP SHOULD be defined in
+ * /usr/include/linux/in.h but probably isn't.
+ * It is an enum element, not a #define, so we can't easily check.
+ */
+#define SHOULD_IPPROTO_SCTP 132
+
+int
+setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen)
+{
+ _sctp_load_libs();
+
+ if ((IPPROTO_TCP == level) && (TCP_NODELAY == optname)) {
+ level = SHOULD_IPPROTO_SCTP;
+ optname = SCTP_NODELAY;
+ }
+
+ return (real_setsockopt)(s, level, optname, optval, optlen);
+}