nixio: Rework TLS support, added support for CyaSSL

contrib/package/cyassl/Makefile

@@ -0,0 +1,58 @@
+# 
+# Copyright (C) 2008 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_BASENAME:=cyassl
+PKG_NAME:=$(PKG_BASENAME)-luci
+PKG_VERSION:=1.0.3
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).zip
+PKG_SOURCE_URL:=http://www.yassl.com/
+PKG_MD5SUM:=e9e85a2d78cd535a049e4acce786e42d
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)/$(PKG_BASENAME)-$(PKG_VERSION)
+PKG_UNPACK=unzip -d $(BUILD_DIR)/$(PKG_NAME) $(DL_DIR)/$(PKG_SOURCE)
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/cyassl-luci/Default
+  TITLE:=CyaSSL (LuCI embedded flavor)
+  URL:=http://www.yassl.com/
+endef
+
+define Package/libcyassl-luci
+  $(call Package/cyassl-luci/Default)
+  SECTION:=libs
+  SUBMENU:=SSL
+  CATEGORY:=Libraries
+  TITLE+= (library)
+endef
+
+define Package/libcyassl-luci/description
+	CyaSSL is an SSL library optimized for small footprint, both on disk and for memory use.
+endef
+
+TARGET_CFLAGS += $(FPIC)
+
+CONFIGURE_ARGS += --without-zlib --enable-fastmath
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/include/ctaocrypt
+	$(CP) $(PKG_BUILD_DIR)/ctaocrypt/include/*.h $(1)/usr/include/ctaocrypt
+	
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_BUILD_DIR)/src/.libs/libcyassl.{a,so*} $(1)/usr/lib/
+	$(CP) $(PKG_BUILD_DIR)/src/libcyassl.la $(1)/usr/lib/
+endef
+
+define Package/libcyassl-luci/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_BUILD_DIR)/src/.libs/libcyassl.so* $(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,libcyassl-luci))

contrib/package/luci/Makefile

@@ -266,6 +266,10 @@ define Package/luci-nixio/config
 			select PACKAGE_dropbear
 			select PACKAGE_dropbearconvert
 
+		config PACKAGE_luci-nixio_cyassl
+			bool "CyaSSL"
+			select PACKAGE_libcyassl-luci
+
 		config PACKAGE_luci-nixio_openssl
 			bool "OpenSSL"
 			select PACKAGE_libopenssl
@@ -276,6 +280,9 @@ ifneq ($(CONFIG_PACKAGE_luci-nixio_openssl),)
   NIXIO_TLS:=openssl
 endif
 
+ifneq ($(CONFIG_PACKAGE_luci-nixio_cyassl),)
+  NIXIO_TLS:=cyassl
+endif
 
 define Package/luci-sys
   $(call Package/luci/libtemplate)

libs/nixio/Makefile

@@ -28,6 +28,13 @@ ifeq ($(NIXIO_TLS),openssl)
 	NIXIO_LDFLAGS += -lssl
 endif
 
+ifeq ($(NIXIO_TLS),cyassl)
+	NIXIO_LDFLAGS += -lcyassl
+	TLS_DEPENDS = src/cyassl-compat.o
+	TLS_CFLAGS = -include src/cyassl-compat.h
+	NIXIO_OBJ += src/cyassl-compat.o
+endif
+
 
 ifeq ($(OS),SunOS)
 	NIXIO_LDFLAGS += -lsocket -lnsl -lsendfile

libs/nixio/docsrc/nixio.lua

@@ -430,4 +430,5 @@ module "nixio"
 --- Create a new TLS context.
 -- @class function
 -- @name nixio.tls
+-- @param mode TLS-Mode ["client", "server"]
 -- @return TLSContext Object

libs/nixio/src/cyassl-compat.c

@@ -0,0 +1,31 @@
+#include "cyassl-compat.h"
+
+int MD5_Init(MD5_CTX *md5) {
+	InitMd5(md5);
+	return 1;
+}
+
+int MD5_Update(MD5_CTX *md5, void *input, unsigned long sz) {
+	Md5Update(md5, input, (word32)sz);
+	return 1;
+}
+
+int MD5_Final(void *input, MD5_CTX *md5) {
+	Md5Final(md5, input);
+	return 1;
+}
+
+int SHA1_Init(SHA_CTX *sha) {
+	InitSha(sha);
+	return 1;
+}
+
+int SHA1_Update(SHA_CTX *sha, void *input, unsigned long sz) {
+	ShaUpdate(sha, input, (word32)sz);
+	return 1;
+}
+
+int SHA1_Final(void *input, SHA_CTX *sha) {
+	ShaFinal(sha, input);
+	return 1;
+}

libs/nixio/src/cyassl-compat.h

@@ -0,0 +1,32 @@
+#define WITH_CYASSL
+#define WITHOUT_OPENSSL
+#include <openssl/ssl.h>
+
+typedef unsigned int word32;
+
+
+#define MD5_DIGEST_LENGTH 16
+typedef struct MD5_CTX {
+    int dummy[24];
+} MD5_CTX;
+
+void InitMd5(MD5_CTX*);
+void Md5Update(MD5_CTX*, void*, word32);
+void Md5Final(MD5_CTX*, void*);
+
+
+#define SHA_DIGEST_LENGTH 20
+typedef struct SHA_CTX {
+    int dummy[24];
+} SHA_CTX;
+
+void InitSha(SHA_CTX*);
+void ShaUpdate(SHA_CTX*, void*, word32);
+void ShaFinal(SHA_CTX*, void*);
+
+int MD5_Init(MD5_CTX *md5);
+int MD5_Update(MD5_CTX *md5, void *input, unsigned long sz);
+int MD5_Final(void *input, MD5_CTX *md5);
+int SHA1_Init(SHA_CTX *md5);
+int SHA1_Update(SHA_CTX *sha, void *input, unsigned long sz);
+int SHA1_Final(void *input, SHA_CTX *sha);

libs/nixio/src/tls-context.c

@@ -41,7 +41,7 @@ static int nixio__tls_pstatus(lua_State *L, int code) {
 }
 
 static int nixio_tls_ctx(lua_State * L) {
-	const char *method = luaL_optlstring(L, 1, "tlsv1", NULL);
+	const char *method = luaL_optlstring(L, 1, "client", NULL);
 
 	luaL_getmetatable(L, NIXIO_TLS_CTX_META);
 	SSL_CTX **ctx = lua_newuserdata(L, sizeof(SSL_CTX *));
@@ -52,27 +52,22 @@ static int nixio_tls_ctx(lua_State * L) {
 	/* create userdata */
 	lua_pushvalue(L, -2);
 	lua_setmetatable(L, -2);
-	lua_getfield(L, -1, "tls_defaultkey");
 
-	if (!strcmp(method, "tlsv1")) {
-		*ctx = SSL_CTX_new(TLSv1_method());
-	} else if (!strcmp(method, "sslv23")) {
-		*ctx = SSL_CTX_new(SSLv23_method());
+	if (!strcmp(method, "client")) {
+		*ctx = SSL_CTX_new(TLSv1_client_method());
+	} else if (!strcmp(method, "server")) {
+		*ctx = SSL_CTX_new(TLSv1_server_method());
 	} else {
-		return luaL_argerror(L, 1, "supported values: tlsv1, sslv23");
+		return luaL_argerror(L, 1, "supported values: client, server");
 	}
 
 	if (!(*ctx)) {
 		return luaL_error(L, "unable to create TLS context");
 	}
 
-	const char *autoload = lua_tostring(L, -1);
-	if (autoload) {
-		SSL_CTX_use_PrivateKey_file(*ctx, autoload, SSL_FILETYPE_PEM);
-	}
-	lua_pop(L, 1);
-
-	SSL_CTX_set_options(*ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
+#ifdef WITH_CYASSL
+	SSL_CTX_set_verify(*ctx, SSL_VERIFY_NONE, NULL);
+#endif
 
 	return 1;
 }
@@ -136,13 +131,6 @@ static int nixio_tls_ctx_set_ciphers(lua_State *L) {
 	return nixio__tls_pstatus(L, SSL_CTX_set_cipher_list(ctx, ciphers));
 }
 
-static int nixio_tls_ctx_set_verify_depth(lua_State *L) {
-	SSL_CTX *ctx = nixio__checktlsctx(L);
-	const int depth = luaL_checkinteger(L, 2);
-	SSL_CTX_set_verify_depth(ctx, depth);
-	return 0;
-}
-
 static int nixio_tls_ctx_set_verify(lua_State *L) {
 	SSL_CTX *ctx = nixio__checktlsctx(L);
 	const int j = lua_gettop(L);
@@ -192,7 +180,6 @@ static const luaL_reg CTX_M[] = {
 	{"set_cert",			nixio_tls_ctx_set_cert},
 	{"set_key",				nixio_tls_ctx_set_key},
 	{"set_ciphers",			nixio_tls_ctx_set_ciphers},
-	{"set_verify_depth",	nixio_tls_ctx_set_verify_depth},
 	{"set_verify",			nixio_tls_ctx_set_verify},
 	{"create",				nixio_tls_ctx_create},
 	{"__gc",				nixio_tls_ctx__gc},
@@ -209,10 +196,12 @@ void nixio_open_tls_context(lua_State *L) {
     /* register module functions */
     luaL_register(L, NULL, R);
 
-#ifndef WITH_AXTLS
-    lua_pushliteral(L, "openssl");
-#else
+#if defined (WITH_AXTLS)
     lua_pushliteral(L, "axtls");
+#elif defined (WITH_CYASSL)
+    lua_pushliteral(L, "cyassl");
+#else
+    lua_pushliteral(L, "openssl");
 #endif
     lua_setfield(L, -2, "tls_provider");
 
@@ -221,9 +210,5 @@ void nixio_open_tls_context(lua_State *L) {
 	lua_pushvalue(L, -1);
 	lua_setfield(L, -2, "__index");
 	luaL_register(L, NULL, CTX_M);
-#ifdef WITH_AXTLS
-    lua_pushliteral(L, "/etc/axtls.key");
-    lua_setfield(L, -2, "tls_defaultkey");
-#endif
 	lua_setfield(L, -2, "meta_tls_context");
 }

libs/nixio/src/tls-crypto.c

@@ -17,6 +17,7 @@
  */
 
 #include "nixio-tls.h"
+#include <stdlib.h>
 #include <string.h>
 #include <errno.h>
 #include <fcntl.h>