package/strongswan: add md4 hash algorithm option

Add the option to enable the md4 hash algorithm and default it to 'no'
since this is a new option.

Since md4 is required by EAP-MSCHAPv2 it is selected by
BR2_PACKAGE_STRONGSWAN_EAP_MSCHAPV2. See
https://wiki.strongswan.org/projects/strongswan/wiki/Autoconf for
further details.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/strongswan/Config.in

@@ -57,6 +57,9 @@ config BR2_PACKAGE_STRONGSWAN_CURL
 	bool "Enable CURL fetcher plugin to fetch files via libcurl"
 	select BR2_PACKAGE_LIBCURL
 
+config BR2_PACKAGE_STRONGSWAN_MD4
+	bool "Enable MD4 hash algorithm"
+
 config BR2_PACKAGE_STRONGSWAN_CHARON
 	bool "Enable the IKEv1/IKEv2 keying daemon charon"
 	default y
@@ -125,6 +128,7 @@ config BR2_PACKAGE_STRONGSWAN_EAP_GTC
 config BR2_PACKAGE_STRONGSWAN_EAP_MSCHAPV2
 	bool "Enable EAP-MSCHAPv2"
 	default y if BR2_PACKAGE_STRONGSWAN_EAP # legacy
+	select BR2_PACKAGE_STRONGSWAN_MD4
 
 config BR2_PACKAGE_STRONGSWAN_EAP_PEAP
 	bool "Enable EAP-PEAP"

package/strongswan/strongswan.mk

@@ -37,6 +37,7 @@ STRONGSWAN_CONF_OPTS += \
 	--enable-vici=$(if $(BR2_PACKAGE_STRONGSWAN_VICI),yes,no) \
 	--enable-swanctl=$(if $(BR2_PACKAGE_STRONGSWAN_VICI),yes,no) \
 	--enable-wolfssl=$(if $(BR2_PACKAGE_STRONGSWAN_WOLFSSL),yes,no) \
+	--enable-md4=$(if $(BR2_PACKAGE_STRONGSWAN_MD4),yes,no) \
 	--enable-systime-fix=$(if $(BR2_PACKAGE_STRONGSWAN_SYSTIME_FIX),yes,no) \
 	--enable-eap-sim=$(if $(BR2_PACKAGE_STRONGSWAN_EAP_SIM),yes,no) \
 	--enable-eap-sim-file=$(if $(BR2_PACKAGE_STRONGSWAN_EAP_SIM_FILE),yes,no) \