From 33a2ba1c14eb5447326945c120e0b64a587ed151 Mon Sep 17 00:00:00 2001
From: Hrvoje Varga <hrvoje.varga@sartura.hr>
Date: Tue, 25 Oct 2016 14:08:25 +0000
Subject: [PATCH] odhcp6c: reuse md5 from libubox

Added config support to use the MD5 implementation from libubox instead
of the in-house implementation. By default if not specified, libubox
will be linked and its MD5 will be used instead of the in-house
implementation.

Signed-off-by: Hrvoje Varga <hrvoje.varga@sartura.hr>
---
 CMakeLists.txt | 14 ++++++++++++--
 src/dhcpv6.c   |  4 ++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f85334c..745fba2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@ cmake_policy(SET CMP0015 NEW)
 project(odhcp6c C)
 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -std=c99")
+set(LIBUBOX 1 CACHE BOOL "Link with libubox")
 add_definitions(-D_GNU_SOURCE -Wall -Werror -Wextra -pedantic)
 
 if(${EXT_PREFIX_CLASS})
@@ -15,8 +16,17 @@ if(${EXT_CER_ID})
 	add_definitions(-DEXT_CER_ID=${EXT_CER_ID})
 endif(${EXT_CER_ID})
 
-add_executable(odhcp6c src/odhcp6c.c src/dhcpv6.c src/ra.c src/script.c src/md5.c)
-target_link_libraries(odhcp6c resolv)
+set(SOURCES src/odhcp6c.c src/dhcpv6.c src/ra.c src/script.c)
+if(LIBUBOX EQUAL 0)
+	set(SOURCES ${SOURCES} src/md5.c)
+endif()
+add_executable(odhcp6c ${SOURCES})
+
+set(LIBRARIES resolv)
+if(LIBUBOX EQUAL 1)
+	set(LIBRARIES ${LIBRARIES} ubox)
+endif()
+target_link_libraries(odhcp6c ${LIBRARIES})
 
 # Installation
 install(TARGETS odhcp6c DESTINATION sbin/)
diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index 5998b75..2a9f8a2 100644
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -33,7 +33,11 @@
 #include <net/ethernet.h>
 
 #include "odhcp6c.h"
+#ifdef LIBUBOX
+#include <libubox/md5.h>
+#else
 #include "md5.h"
+#endif
 
 
 #define ALL_DHCPV6_RELAYS {{{0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-- 
2.30.2