1 files changed, 98 insertions, 0 deletions
diff --git a/configure b/configure
new file mode 100755
index 0000000..fd690ed
--- /dev/null
+++ b/configure
@@ -0,0 +1,98 @@
+#!/bin/bash
+# This isn't a configure generated by autoconf!
+
+MISSING_DEFS=0
+MISSING_NACL=0
+
+[ -z $CC ] && CC=cc
+
+TMPDIR=$(mktemp -d config.XXXXXX)
+trap 'status=$?; rm -rf $TMPDIR; exit $status' EXIT HUP INT QUIT TERM
+
+check_nacl()
+{
+	echo -n "[*] Checking nacl ... "
+
+	cat > $TMPDIR/nacltest.c << EOF
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_box_curve25519xsalsa20poly1305.h"
+#include "crypto_scalarmult_curve25519.h"
+#include "crypto_auth_hmacsha512256.h"
+
+int main(void) { }
+EOF
+
+	if [ -z $NACL_INC_DIR ] ; then
+		NACL_INC_DIR="/usr/include/nacl"
+	fi
+
+	if [ -z $NACL_LIB_DIR ] ; then
+		NACL_LIB_DIR="/usr/lib"
+	fi
+
+	LDFLAGS="-L $NACL_LIB_DIR"
+	CFLAGS="-I $NACL_INC_DIR"
+
+	$CC $CFLAGS $LDFLAGS -o $TMPDIR/nacltest $TMPDIR/nacltest.c >> $TMPDIR/config.log 2>&1
+	if [ ! -x $TMPDIR/nacltest ] ; then
+		echo "[NO]"
+		MISSING_NACL=1
+	else
+		echo "[YES]"
+		echo "CONFIG_NACL_INC_DIR:=$NACL_INC_DIR" >> Config
+		echo "CONFIG_NACL_LIB_DIR:=$NACL_LIB_DIR" >> Config
+	fi
+
+}
+
+check_libnl()
+{
+	echo -n "[*] Checking libnl ... "
+
+	cat > $TMPDIR/libnltest.c << EOF
+#include <libnl3/netlink/genl/genl.h>
+#include <libnl3/netlink/genl/family.h>
+#include <libnl3/netlink/genl/ctrl.h>
+#include <libnl3/netlink/msg.h>
+#include <libnl3/netlink/attr.h>
+#include <libnl3/netlink/version.h>
+
+#if LIBNL_VER_NUM < LIBNL_VER(3,0)
+# error incompatible libnl version
+#endif
+
+int main(void) { }
+EOF
+
+	$CC $(pkg-config --cflags libnl-3.0) -o $TMPDIR/libnltest $TMPDIR/libnltest.c >> $TMPDIR/config.log 2>&1
+	if [ ! -x $TMPDIR/libnltest ] ; then
+		echo "[NO]"
+		MISSING_DEFS=1
+	else
+		echo "[YES]"
+	fi
+}
+
+echo "# This file is autogenerated by the configure script" > Config
+check_nacl
+check_libnl
+
+if [ "$MISSING_DEFS" == "1" ] ; then
+	echo "[!] Some libraries or header definitions are missing or too old."
+	echo "    Please refer to the INSTALL file for the libraries needed to"
+	echo "    build netsniff-ng."
+	exit 1
+fi
+
+if [ "$MISSING_NACL" == "1" ] ; then
+	echo "[!] The NaCl crypto library is currently not present on your"
+	echo "    system or could not be found. Either install it from your"
+	echo "    distro or build it manually using 'make nacl' and make sure"
+	echo "    that the NACL_INC_DIR and NACL_LIB_DIR variables are set"
+	echo "    appropriately."
+	exit 1
+fi
+
+exit 0