From ed0aec25c50b53e63070c2a4a25480724bdf343a Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Wed, 3 Sep 2014 17:24:00 +0200
Subject: Fix UHASH build on *BSD

---
 cmake/checks.cmake                           | 32 ++++++++++++++++++++++++++++
 src/crypto/mac/uhash/builtin/uhash_builtin.c |  2 --
 src/fastd_config.h.in                        |  8 +++++++
 src/util.h                                   | 23 ++++++++++++++++++++
 4 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/cmake/checks.cmake b/cmake/checks.cmake
index 64dae58..d42f336 100644
--- a/cmake/checks.cmake
+++ b/cmake/checks.cmake
@@ -57,3 +57,35 @@ endif(NOT DARWIN)
 set(CMAKE_EXTRA_INCLUDE_FILES "netinet/if_ether.h")
 check_type_size("struct ethhdr" SIZEOF_ETHHDR)
 string(COMPARE NOTEQUAL "${SIZEOF_ETHHDR}" "" HAVE_ETHHDR)
+
+
+set(CMAKE_REQUIRED_INCLUDES "sys/types.h")
+
+check_c_source_compiles("
+#include <endian.h>
+
+int main() {
+	return 0;
+}
+" HAVE_ENDIAN_H)
+
+if(HAVE_ENDIAN_H)
+  check_symbol_exists("be32toh" "endian.h" HAVE_LINUX_ENDIAN)
+
+else(HAVE_ENDIAN_H)
+  check_c_source_compiles("
+  #include <sys/types.h>
+  #include <sys/endian.h>
+
+  int main() {
+    return 0;
+  }
+  " HAVE_SYS_ENDIAN_H)
+
+  if(HAVE_SYS_ENDIAN_H)
+    check_symbol_exists("be32toh" "sys/types.h;sys/endian.h" HAVE_LINUX_ENDIAN)
+
+  else(HAVE_SYS_ENDIAN_H)
+    message(FATAL_ERROR "Neither <endian.h> nor <sys/endian.h> found")
+  endif(HAVE_SYS_ENDIAN_H)
+endif(HAVE_ENDIAN_H)
diff --git a/src/crypto/mac/uhash/builtin/uhash_builtin.c b/src/crypto/mac/uhash/builtin/uhash_builtin.c
index 07ee749..e4710ae 100644
--- a/src/crypto/mac/uhash/builtin/uhash_builtin.c
+++ b/src/crypto/mac/uhash/builtin/uhash_builtin.c
@@ -35,8 +35,6 @@
 #include "../../../../util.h"
 #include "../../../../log.h"
 
-#include <endian.h>
-
 
 /** MAC state used by this UHASH implmentation */
 struct fastd_mac_state {
diff --git a/src/fastd_config.h.in b/src/fastd_config.h.in
index 9949eca..e396bf8 100644
--- a/src/fastd_config.h.in
+++ b/src/fastd_config.h.in
@@ -41,6 +41,14 @@
 /** Defined if the platform defines get_current_dir_name() */
 #cmakedefine HAVE_GET_CURRENT_DIR_NAME
 
+/** Defined if <endian.h> exists */
+#cmakedefine HAVE_ENDIAN_H
+
+/** Defined if <sys/endian.h> exists */
+#cmakedefine HAVE_SYS_ENDIAN_H
+
+/** Defined if be32toh etc. exist */
+#cmakedefine HAVE_LINUX_ENDIAN
 
 /** Defined if the platform supports SO_BINDTODEVICE */
 #cmakedefine USE_BINDTODEVICE
diff --git a/src/util.h b/src/util.h
index fe6720b..3acc42f 100644
--- a/src/util.h
+++ b/src/util.h
@@ -32,6 +32,18 @@
 
 #pragma once
 
+
+#include <sys/types.h>
+
+#ifdef HAVE_ENDIAN_H
+#include <endian.h>
+#endif
+
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
+
+
 /**
    Returns a pointer to a data structure, given the address of a member contained in the structure
 
@@ -91,3 +103,14 @@ static inline size_t max_size_t(size_t a, size_t b) {
 static inline size_t min_size_t(size_t a, size_t b) {
 	return (a < b) ? a : b;
 }
+
+
+#ifndef HAVE_LINUX_ENDIAN
+
+/** converts a 32bit integer from big endian to host byte order */
+#define be32toh(x) betoh32(x)
+
+/** converts a 32bit integer from little endian to host byte order */
+#define le32toh(x) letoh32(x)
+
+#endif
-- 
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