Remove MediaDrm stack from mediaserver
Part of media security hardening
MediaDrm was temporarily allowed to
run in either mediaserver or mediadrmserver
while all nexus devices were implementing
support for the native_handle representation
of secure buffers. Now that all nexus
devices support native_handle, the MediaDrm
stack can be removed from mediaserver.
b/22990512
Change-Id: Ie5d83bfeb4c4a824e1d0edb4c9452c782d6fd386
diff --git a/drm/libmediadrm/SharedLibrary.cpp b/drm/libmediadrm/SharedLibrary.cpp
new file mode 100644
index 0000000..74b3a71
--- /dev/null
+++ b/drm/libmediadrm/SharedLibrary.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "Drm"
+
+#include <dlfcn.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/SharedLibrary.h>
+#include <utils/Log.h>
+
+namespace android {
+
+ SharedLibrary::SharedLibrary(const String8 &path) {
+ mLibHandle = dlopen(path.string(), RTLD_NOW);
+ }
+
+ SharedLibrary::~SharedLibrary() {
+ if (mLibHandle != NULL) {
+ dlclose(mLibHandle);
+ mLibHandle = NULL;
+ }
+ }
+
+ bool SharedLibrary::operator!() const {
+ return mLibHandle == NULL;
+ }
+
+ void *SharedLibrary::lookup(const char *symbol) const {
+ if (!mLibHandle) {
+ return NULL;
+ }
+ return dlsym(mLibHandle, symbol);
+ }
+
+ const char *SharedLibrary::lastError() const {
+ const char *error = dlerror();
+ return error ? error : "No errors or unknown error";
+ }
+
+};