1 files changed, 82 insertions, 0 deletions
diff --git a/package/libs/openssl/engine.mk b/package/libs/openssl/engine.mk
new file mode 100644
index 0000000000..482b5ad5e8
--- /dev/null
+++ b/package/libs/openssl/engine.mk
@@ -0,0 +1,82 @@
+ENGINES_DIR=engines-1.1
+
+define Package/openssl/engine/Default
+  SECTION:=libs
+  CATEGORY:=Libraries
+  SUBMENU:=SSL
+  DEPENDS:=libopenssl @OPENSSL_ENGINE +libopenssl-conf
+endef
+
+# 1 = engine name
+# 2 - package name, defaults to libopenssl-$(1)
+define Package/openssl/add-engine
+  OSSL_ENG_PKG:=$(if $(2),$(2),libopenssl-$(1))
+  Package/$$(OSSL_ENG_PKG)/conffiles:=/etc/ssl/engines.cnf.d/$(1).cnf
+
+  define Package/$$(OSSL_ENG_PKG)/install
+	$$(INSTALL_DIR)  $$(1)/usr/lib/$(ENGINES_DIR)
+	$$(INSTALL_BIN)  $$(PKG_INSTALL_DIR)/usr/lib/$(ENGINES_DIR)/$(1).so \
+			 $$(1)/usr/lib/$(ENGINES_DIR)
+	$$(INSTALL_DIR)  $$(1)/etc/ssl/engines.cnf.d
+	$$(INSTALL_DATA) ./files/$(1).cnf $$(1)/etc/ssl/engines.cnf.d/
+  endef
+
+  define Package/$$(OSSL_ENG_PKG)/postinst :=
+#!/bin/sh
+# $$$$1 == non-empty: suggest reinstall
+error_out() {
+    [ "$1" ] && cat <<- EOF
+	Reinstalling the libopenssl-conf package may fix this:
+
+	    opkg install --force-reinstall libopenssl-conf
+	EOF
+    cat <<- EOF
+
+	Then, you will have to reinstall this package, and any other engine package you have
+	you have previously installed to ensure they are enabled:
+
+	    opkg install --force-reinstall $$(OSSL_ENG_PKG) [OTHER_ENGINE_PKG]...
+
+	EOF
+    exit 1
+}
+ENGINES_CNF="$$$${IPKG_INSTROOT}/etc/ssl/engines.cnf.d/engines.cnf"
+OPENSSL_CNF="$$$${IPKG_INSTROOT}/etc/ssl/openssl.cnf"
+if [ ! -f "$$$${OPENSSL_CNF}" ]; then
+    echo -e "ERROR: File $$$${OPENSSL_CNF} not found."
+    error_out reinstall
+fi
+if ! grep -q "^.include /etc/ssl/engines.cnf.d" "$$$${OPENSSL_CNF}"; then
+    cat <<- EOF
+	Your /etc/ssl/openssl.cnf file is not loading engine configuration files from
+	/etc/ssl/engines.cnf.d.  You should consider start with a fresh, updated OpenSSL config by
+	running:
+
+	    opkg install --force-reinstall --force-maintainer libopenssl-conf
+
+	The above command will overwrite any changes you may have made to both /etc/ssl/openssl.cnf
+	and /etc/ssl/engines.cnf.d/engines.cnf files, so back them up first!
+	EOF
+    error_out
+fi
+if [ ! -f "$$$${ENGINES_CNF}" ]; then
+    echo "Can't configure $$(OSSL_ENG_PKG): File $$$${ENGINES_CNF} not found."
+    error_out reinstall
+fi
+if grep -q "$(1)=$(1)" "$$$${ENGINES_CNF}"; then
+    echo "$$(OSSL_ENG_PKG): $(1) engine was already configured.  Nothing to be done."
+else
+    echo "$(1)=$(1)" >> "$$$${ENGINES_CNF}"
+    echo "$$(OSSL_ENG_PKG): $(1) engine enabled.  All done!"
+fi
+  endef
+
+  define Package/$$(OSSL_ENG_PKG)/prerm :=
+#!/bin/sh
+ENGINES_CNF="$$$${IPKG_INSTROOT}/etc/ssl/engines.cnf.d/engines.cnf"
+[ -f "$$$${ENGINES_CNF}" ] || exit 0
+sed -e '/$(1)=$(1)/d' -i "$$$${ENGINES_CNF}"
+  endef
+endef
+
+