From d0009856814c13d13770db5aadd7b2fabf947776 Mon Sep 17 00:00:00 2001
From: Daniel Borkmann <dborkman@redhat.com>
Date: Mon, 13 May 2013 13:53:27 +0200
Subject: staging: add mausezahn staging directory

After some back and forth, we decided that it is easier to maintain
mausezahn in a staging directory until it is fully reworked and
cleaned up to be ready to be fully integrated. This way, it is better
than having it in a separate branch, and we can also accept patches
from outside more easily. Also, while at it, fix up some function
mismatches with libcli.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
 staging/mops_tcp.c | 154 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 staging/mops_tcp.c

(limited to 'staging/mops_tcp.c')

diff --git a/staging/mops_tcp.c b/staging/mops_tcp.c
new file mode 100644
index 0000000..4d788bd
--- /dev/null
+++ b/staging/mops_tcp.c
@@ -0,0 +1,154 @@
+/*
+ * Mausezahn - A fast versatile traffic generator
+ * Copyright (C) 2008-2010 Herbert Haas
+ * 
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the 
+ * Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT 
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 
+ * details.
+ * 
+ * You should have received a copy of the GNU General Public License along with 
+ * this program; if not, see http://www.gnu.org/licenses/gpl-2.0.html
+ * 
+*/
+
+
+#include "mz.h"
+#include "mops.h"
+#include "cli.h"
+
+// Calculates the number of TCP transmissions based on SQNR range
+u_int32_t mops_tcp_complexity_sqnr (struct mops * mp)
+{
+	u_int32_t a,b,t,result;
+   
+	a = mp->tcp_seq_start;
+	b = mp->tcp_seq_stop;
+	t = mp->tcp_seq_delta;
+   
+	if (!t) return 1; // delta set to zero means no range
+   
+	if (a<b) // regular case
+		result = ceill ((b-a)/t);
+	else     // range wraps around
+		result = ceill (((0xffffffff-a) + b)/t);
+   
+	return result;
+}
+
+
+// Calculates the number of TCP transmissions based on SQNR range
+u_int32_t mops_tcp_complexity_acknr (struct mops * mp)
+{
+	u_int32_t a,b,t,result;
+   
+	a = mp->tcp_ack_start;
+	b = mp->tcp_ack_stop;
+	t = mp->tcp_ack_delta;
+   
+	if (!t) return 1; // delta set to zero means no range
+   
+	if (a<b) // regular case
+		result = ceill ((b-a)/t);
+	else     // range wraps around
+		result = ceill (((0xffffffff-a) + b)/t);
+   
+	return result;
+}
+
+
+
+
+// *****TODO: TCP Options ******
+
+// Remove all options
+int mops_tcp_option_remove_all (struct mops* mp)
+{
+   
+   return 0;
+}
+
+
+// Prints current flag settings in the provided string 'str'.
+// NOTE that str must be at least 32 bytes! 
+// *** BETTER USE 64 bytes (for future compatibility) ***
+// 
+int mops_tcp_flags2str (struct mops* mp, char *str)
+{
+	if (mp==NULL) {
+		sprintf(str, "(no valid mops)\n");
+		return 1;
+	}
+	
+	sprintf(str, "%s-%s-%s-%s-%s-%s-%s-%s",
+		(mp->tcp_ctrl_CWR) ? "CRW" : "---",
+		(mp->tcp_ctrl_ECE) ? "ECE" : "---",
+		(mp->tcp_ctrl_URG) ? "URG" : "---",
+		(mp->tcp_ctrl_ACK) ? "ACK" : "---",
+		(mp->tcp_ctrl_PSH) ? "PSH" : "---",
+		(mp->tcp_ctrl_RST) ? "RST" : "---",
+		(mp->tcp_ctrl_SYN) ? "SYN" : "---",
+		(mp->tcp_ctrl_FIN) ? "FIN" : "---");
+	
+	return 0;
+}
+
+// Add TCP options
+// 
+// TODO: currently all params are ignored and a default option combination is added.
+// 
+int mops_tcp_add_option (struct mops* mp,
+			 int mss, 
+			 int sack,
+			 int scale, 
+			 u_int32_t tsval, 
+			 u_int32_t tsecr)
+{
+			 
+	u_int8_t tcp_default_options[] = {
+	  0x02, 0x04, 0x05, 0xac,                                     // MSS
+	  0x04, 0x02,                                                 // SACK permitted
+	  0x08, 0x0a, 0x19, 0x35, 0x90, 0xc3, 0x00, 0x00, 0x00, 0x00, // Timestamps
+	  0x01,                                                       // NOP
+	  0x03, 0x03, 0x05                                            // Window Scale 5
+	};
+
+			 
+       /*   Kind: 8
+            Length: 10 bytes
+
+	    +-------+-------+---------------------+---------------------+
+            |Kind=8 |  10   |   TS Value (TSval)  |TS Echo Reply (TSecr)|
+            +-------+-------+---------------------+---------------------+
+               1       1              4                     4
+	* 
+	*  The Timestamps option carries two four-byte timestamp fields. The
+	*  Timestamp Value field (TSval) contains the current value of the
+	*  timestamp clock of the TCP sending the option.
+	* 
+	* The Timestamp Echo Reply field (TSecr) is only valid if the ACK bit
+	* is set in the TCP header; if it is valid, it echos a times- tamp
+	* value that was sent by the remote TCP in the TSval field of a
+	* Timestamps option. When TSecr is not valid, its value must be zero.
+	* The TSecr value will generally be from the most recent Timestamp
+	* option that was received; however, there are exceptions that are
+	* explained below.
+	* 
+	* A TCP may send the Timestamps option (TSopt) in an initial <SYN>
+	* segment (i.e., segment containing a SYN bit and no ACK bit), and
+	* may send a TSopt in other segments only if it re- ceived a TSopt in
+	* the initial <SYN> segment for the connection.
+	* 
+	*/
+	
+	memcpy((void*) mp->tcp_option, (void*) tcp_default_options, 20);
+	mp->tcp_option_s = 20;
+	mp->tcp_option_used = 1;
+	
+	return 0;
+}
+
-- 
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