windows mingw support

Change-Id: I4d1c1f7f990dce2d3f4727af6eb3b43fd7d186ee

init_posix.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 // +build linux darwin cgo
+// +build !windows
 
 package openssl
 

init_windows.go

@@ -0,0 +1,59 @@
+// Copyright (C) 2014 Space Monkey, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build windows cgo
+
+package openssl
+
+/*
+
+#cgo windows LDFLAGS: -lssl -lcrypto -lws2_32 -lcrypt32 -lgdi32
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <errno.h>
+#include <openssl/crypto.h>
+#include <windows.h>
+
+CRITICAL_SECTION* goopenssl_locks;
+
+int Goopenssl_init_locks() {
+	int rc = 0;
+	int nlock;
+	int i;
+	int locks_needed = CRYPTO_num_locks();
+
+	goopenssl_locks = (CRITICAL_SECTION*)malloc(
+		sizeof(*goopenssl_locks) * locks_needed);
+	if (!goopenssl_locks) {
+		return ENOMEM;
+	}
+	for (nlock = 0; nlock < locks_needed; ++nlock) {
+		InitializeCriticalSection(&goopenssl_locks[nlock]);
+	}
+
+	return 0;
+}
+
+void Goopenssl_thread_locking_callback(int mode, int n, const char *file,
+	int line) {
+	if (mode & CRYPTO_LOCK) {
+		EnterCriticalSection(&goopenssl_locks[n]);
+	} else {
+		LeaveCriticalSection(&goopenssl_locks[n]);
+	}
+}
+*/
+import "C"