DO NOT MERGE - OMX: allow only secure codec to remotely call allocateBuffer.

Bug: 24310423
Change-Id: Iebcfc58b447f925ec2134898060af2ef227266a3
(cherry picked from commit 8dde7269a5356503d2b283234b6cb46d0c3f214e)

6 files changed, 28 insertions, 3 deletions

diff --git a/include/media/IOMX.h b/include/media/IOMX.h
index 627f23b..595e51f 100644
--- a/include/media/IOMX.h
+++ b/include/media/IOMX.h
@@ -207,6 +207,12 @@ public:
     virtual status_t onTransact(
             uint32_t code, const Parcel &data, Parcel *reply,
             uint32_t flags = 0);
+
+protected:
+    // check if the codec is secure.
+    virtual bool isSecure(IOMX::node_id node) {
+        return false;
+    }
 };
 
 class BnOMXObserver : public BnInterface<IOMXObserver> {
diff --git a/media/libmedia/IOMX.cpp b/media/libmedia/IOMX.cpp
index c583d32..0ff47de 100644
--- a/media/libmedia/IOMX.cpp
+++ b/media/libmedia/IOMX.cpp
@@ -848,6 +848,12 @@ status_t BnOMX::onTransact(
 
             node_id node = (node_id)data.readInt32();
             OMX_U32 port_index = data.readInt32();
+            if (!isSecure(node) || port_index != 0 /* kPortIndexInput */) {
+                ALOGE("b/24310423");
+                reply->writeInt32(INVALID_OPERATION);
+                return NO_ERROR;
+            }
+
             size_t size = data.readInt64();
 
             buffer_id buffer;
diff --git a/media/libstagefright/include/OMX.h b/media/libstagefright/include/OMX.h
index e8c4970..2da5c6c 100644
--- a/media/libstagefright/include/OMX.h
+++ b/media/libstagefright/include/OMX.h
@@ -130,6 +130,8 @@ public:
 
     virtual void binderDied(const wp<IBinder> &the_late_who);
 
+    virtual bool isSecure(IOMX::node_id node);
+
     OMX_ERRORTYPE OnEvent(
             node_id node,
             OMX_IN OMX_EVENTTYPE eEvent,
diff --git a/media/libstagefright/include/OMXNodeInstance.h b/media/libstagefright/include/OMXNodeInstance.h
index 712cae5..bcdaa9b 100644
--- a/media/libstagefright/include/OMXNodeInstance.h
+++ b/media/libstagefright/include/OMXNodeInstance.h
@@ -31,7 +31,7 @@ struct GraphicBufferSource;
 
 struct OMXNodeInstance {
     OMXNodeInstance(
-            OMX *owner, const sp<IOMXObserver> &observer);
+            OMX *owner, const sp<IOMXObserver> &observer, const char *name);
 
     void setHandle(OMX::node_id node_id, OMX_HANDLETYPE handle);
 
@@ -114,6 +114,10 @@ struct OMXNodeInstance {
             const void *data,
             size_t size);
 
+    bool isSecure() const {
+        return mIsSecure;
+    }
+
     void onMessage(const omx_message &msg);
     void onObserverDied(OMXMaster *master);
     void onGetHandleFailed();
@@ -129,6 +133,7 @@ private:
     OMX_HANDLETYPE mHandle;
     sp<IOMXObserver> mObserver;
     bool mDying;
+    bool mIsSecure;
 
     // Lock only covers mGraphicBufferSource.  We can't always use mLock
     // because of rare instances where we'd end up locking it recursively.
diff --git a/media/libstagefright/omx/OMX.cpp b/media/libstagefright/omx/OMX.cpp
index 41407e4..11b0d6d 100644
--- a/media/libstagefright/omx/OMX.cpp
+++ b/media/libstagefright/omx/OMX.cpp
@@ -187,6 +187,11 @@ void OMX::binderDied(const wp<IBinder> &the_late_who) {
     instance->onObserverDied(mMaster);
 }
 
+bool OMX::isSecure(node_id node) {
+    OMXNodeInstance *instance = findInstance(node);
+    return (instance == NULL ? false : instance->isSecure());
+}
+
 bool OMX::livesLocally(node_id /* node */, pid_t pid) {
     return pid == getpid();
 }
@@ -225,7 +230,7 @@ status_t OMX::allocateNode(
 
     *node = 0;
 
-    OMXNodeInstance *instance = new OMXNodeInstance(this, observer);
+    OMXNodeInstance *instance = new OMXNodeInstance(this, observer, name);
 
     OMX_COMPONENTTYPE *handle;
     OMX_ERRORTYPE err = mMaster->makeComponentInstance(
diff --git a/media/libstagefright/omx/OMXNodeInstance.cpp b/media/libstagefright/omx/OMXNodeInstance.cpp
index 086426d..cc70b64 100644
--- a/media/libstagefright/omx/OMXNodeInstance.cpp
+++ b/media/libstagefright/omx/OMXNodeInstance.cpp
@@ -90,7 +90,7 @@ OMX_CALLBACKTYPE OMXNodeInstance::kCallbacks = {
 };
 
 OMXNodeInstance::OMXNodeInstance(
-        OMX *owner, const sp<IOMXObserver> &observer)
+        OMX *owner, const sp<IOMXObserver> &observer, const char *name)
     : mOwner(owner),
       mNodeID(0),
       mHandle(NULL),
@@ -98,6 +98,7 @@ OMXNodeInstance::OMXNodeInstance(
       mDying(false),
       mBufferIDCount(0)
 {
+    mIsSecure = AString(name).endsWith(".secure");
 }
 
 OMXNodeInstance::~OMXNodeInstance() {