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_socket.c b/src/withsctp/sctp_socket.c
new file mode 100644
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--- /dev/null
+++ b/src/withsctp/sctp_socket.c
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+/* 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().
+ *
+ * gcc sctp_socket.c -o sctp_socket.so -ldl -shared -O2 -s
+ * export LD_PRELOAD=./sctp_socket.so
+ *
+ * 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
+socket(int domain, int type, int protocol)
+{
+ _sctp_load_libs();
+
+ if (((PF_INET == domain) || (PF_INET6 == domain))
+ && (SOCK_STREAM == type)) {
+ protocol = SHOULD_IPPROTO_SCTP;
+ }
+
+ return (real_socket)(domain, type, protocol);
+}