From 3ff46930b57dd9be5832acb8e03832ea3773d163 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Wed, 28 Jan 2009 21:31:01 +0000
Subject: reenabled ld-kdr cleaning up Makefile

---
 doc/uanytun.8.txt | 14 +++++++++++++-
 src/Makefile      | 24 ++++++++++++------------
 src/configure     | 10 +++++-----
 src/options.c     |  4 ++--
 4 files changed, 32 insertions(+), 20 deletions(-)

diff --git a/doc/uanytun.8.txt b/doc/uanytun.8.txt
index dc1b934..3364294 100644
--- a/doc/uanytun.8.txt
+++ b/doc/uanytun.8.txt
@@ -27,6 +27,7 @@ SYNOPSIS
 [ *-m|--mux* <mux-id> ]
 [ *-w|--window-size* <window size> ]
 [ *-k|--kd-prf* <kd-prf type> ]
+[ *-l|--ld-kdr* <ld-kdr> ]
 [ *-E|--passphrase <pass phrase> ]
 [ *-K|--key* <master key> ]
 [ *-A|--salt* <master salt> ]
@@ -208,6 +209,17 @@ Possible values:
 * *aes-ctr-192* - AES in counter mode with 192 Bits
 * *aes-ctr-256* - AES in counter mode with 256 Bits
 
+-l|--ld-kdr <ld-kdr>
+~~~~~~~~~~~~~~~~~~~~
+
+The log2 of the key derivation rate. This is used by the key
+derivation to determine how often a new session key has to be
+generated. A value of -1 means to generate only one key and use
+it forever. The default is 0 which means to calculate a new key
+for every packet. A value of 1 would tell the key derivation
+to generate a new key after 2 packets, for 2 its 4 packets and 
+so on.
+
 -E|--passphrase <pass phrase>
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -299,6 +311,6 @@ COPYING
 
 Copyright \(C) 2008-2009 Christian Pointner. 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 
+of the GNU General Public License version 3 as published by the 
 Free Software Foundation.
 
diff --git a/src/Makefile b/src/Makefile
index ef90eeb..5488bfe 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -34,12 +34,11 @@
 
 include include.mk
 
-DEPENDFILE = .depend
-EXECUTABLE = uanytun
+EXECUTABLE := uanytun
 
-CRYPT_OBJ = key_derivation.o \
+CRYPT_OBJ := key_derivation.o \
             auth_algo.o
-OBJ = log.o \
+OBJ := log.o \
       signal.o \
       options.o \
       tun.o \
@@ -55,16 +54,17 @@ ifndef NO_CRYPT_OBJ
 OBJ += $(CRYPT_OBJ)
 endif
 
-SRC = $(OBJ:%.o=%.c)
+SRC := $(OBJ:%.o=%.c)
 
-.PHONY: dep distclean clean
+all: $(EXECUTABLE)
 
-all: dep $(EXECUTABLE)
+%.d: %.c
+	@set -e; rm -f $@; \
+	 $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
+   sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+   rm -f $@.$$$$; echo '(re)building $@'
 
-dep: $(SRC)
-	$(CC) -MM $(SRC) > $(DEPENDFILE)
-
--include $(DEPENDFILE)
+-include $(SRC:%.c=%.d)
 
 uanytun: $(OBJ)
 	$(LD) $(OBJ) -o $@ $(LDFLAGS)
@@ -81,5 +81,5 @@ distclean: clean
 
 clean:
 	rm -f *.o
-	rm -f $(DEPENDFILE)
+	rm -f *.d
 	rm -f $(EXECUTABLE)
diff --git a/src/configure b/src/configure
index d105f87..c54d555 100755
--- a/src/configure
+++ b/src/configure
@@ -141,11 +141,11 @@ if [ $V4_MAPPED -eq 0 ]; then
 fi
 
 cat >> include.mk <<EOF
-TARGET = $TARGET
-CC = gcc
-CFLAGS = $CFLAGS
-LD = gcc
-LDFLAGS = $LDFLAGS
+TARGET := $TARGET
+CC := gcc
+CFLAGS := $CFLAGS
+LD := gcc
+LDFLAGS := $LDFLAGS
 EOF
 
 exit 0
diff --git a/src/options.c b/src/options.c
index db7d4e1..9931c51 100644
--- a/src/options.c
+++ b/src/options.c
@@ -197,7 +197,7 @@ int options_parse(options_t* opt, int argc, char* argv[])
     PARSE_INT_PARAM("-w","--window-size", opt->seq_window_size_)
 #ifndef NO_CRYPT
     PARSE_STRING_PARAM("-k","--kd-prf", opt->kd_prf_)
-//    PARSE_INT_PARAM("-l","--ld-kdr", opt->ld_kdr_)
+    PARSE_INT_PARAM("-l","--ld-kdr", opt->ld_kdr_)
 #ifndef NO_PASSPHRASE
     PARSE_STRING_PARAM_SEC("-E","--passphrase", opt->passphrase_)
 #endif
@@ -337,7 +337,7 @@ void options_print_usage()
   printf("        [-w|--window-size] <window size>    seqence number window size\n");
 #ifndef NO_CRYPT
   printf("        [-k|--kd-prf] <kd-prf type>         key derivation pseudo random function\n");
-//  printf("        [-l|--ld-kdr] <ld-kdr>              log2 of key derivation rate\n");
+  printf("        [-l|--ld-kdr] <ld-kdr>              log2 of key derivation rate\n");
 #ifndef NO_PASSPHRASE
   printf("        [-E|--passphrase] <pass phrase>     a passprhase to generate master key and salt from\n");
 #endif
-- 
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