Allow call audio access for default dialer application

The access to call audio (record and play) will be granted only to the app associated with Dialer role, who also includes a new system permission.

Test: Compilation and manual tests
Bug: 135197853

Change-Id: I65ca823c235d4d3420630837427103783ad1d1b0
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 152883b..2f67a18 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -879,6 +879,7 @@
                                         audio_stream_type_t *stream,
                                         pid_t pid,
                                         uid_t uid,
+                                        const String16& opPackageName,
                                         const audio_config_t *config,
                                         audio_output_flags_t flags,
                                         audio_port_handle_t *selectedDeviceId,
@@ -888,7 +889,7 @@
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return NO_INIT;
     return aps->getOutputForAttr(attr, output, session, stream, pid, uid,
-                                 config,
+                                 opPackageName, config,
                                  flags, selectedDeviceId, portId, secondaryOutputs);
 }
 
diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index 5b3a057..cccb131 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -214,6 +214,7 @@
                               audio_stream_type_t *stream,
                               pid_t pid,
                               uid_t uid,
+                              const String16& opPackageName,
                               const audio_config_t *config,
                               audio_output_flags_t flags,
                               audio_port_handle_t *selectedDeviceId,
@@ -252,6 +253,7 @@
             }
             data.writeInt32(pid);
             data.writeInt32(uid);
+            data.writeString16(opPackageName);
             data.write(config, sizeof(audio_config_t));
             data.writeInt32(static_cast <uint32_t>(flags));
             data.writeInt32(*selectedDeviceId);
@@ -1645,6 +1647,11 @@
             }
             pid_t pid = (pid_t)data.readInt32();
             uid_t uid = (uid_t)data.readInt32();
+            String16 opPackageName;
+            status = data.readString16(&opPackageName);
+            if (status != NO_ERROR) {
+                return status;
+            }
             audio_config_t config;
             memset(&config, 0, sizeof(audio_config_t));
             data.read(&config, sizeof(audio_config_t));
@@ -1656,7 +1663,7 @@
             std::vector<audio_io_handle_t> secondaryOutputs;
             status = getOutputForAttr(&attr,
                     &output, session, &stream, pid, uid,
-                    &config,
+                    opPackageName, &config,
                     flags, &selectedDeviceId, &portId, &secondaryOutputs);
             reply->writeInt32(status);
             status = reply->write(&attr, sizeof(audio_attributes_t));
diff --git a/media/libaudioclient/include/media/AudioSystem.h b/media/libaudioclient/include/media/AudioSystem.h
index fe211e0..07a2292 100644
--- a/media/libaudioclient/include/media/AudioSystem.h
+++ b/media/libaudioclient/include/media/AudioSystem.h
@@ -240,6 +240,7 @@
                                      audio_stream_type_t *stream,
                                      pid_t pid,
                                      uid_t uid,
+                                     const String16& opPackageName,
                                      const audio_config_t *config,
                                      audio_output_flags_t flags,
                                      audio_port_handle_t *selectedDeviceId,
diff --git a/media/libaudioclient/include/media/IAudioFlinger.h b/media/libaudioclient/include/media/IAudioFlinger.h
index 8bc1d83..8658cfa 100644
--- a/media/libaudioclient/include/media/IAudioFlinger.h
+++ b/media/libaudioclient/include/media/IAudioFlinger.h
@@ -70,6 +70,7 @@
             if (clientInfo.readFromParcel(parcel) != NO_ERROR) {
                 return DEAD_OBJECT;
             }
+            opPackageName = parcel->readString16();
             if (parcel->readInt32() != 0) {
                 // TODO: Using unsecurePointer() has some associated security
                 //       pitfalls (see declaration for details).
@@ -97,6 +98,7 @@
             (void)parcel->write(&attr, sizeof(audio_attributes_t));
             (void)parcel->write(&config, sizeof(audio_config_t));
             (void)clientInfo.writeToParcel(parcel);
+            (void)parcel->writeString16(opPackageName);
             if (sharedBuffer != 0) {
                 (void)parcel->writeInt32(1);
                 (void)parcel->writeStrongBinder(IInterface::asBinder(sharedBuffer));
@@ -119,6 +121,7 @@
         audio_attributes_t attr;
         audio_config_t config;
         AudioClient clientInfo;
+        String16 opPackageName;
         sp<IMemory> sharedBuffer;
         uint32_t notificationsPerBuffer;
         float speed;
diff --git a/media/libaudioclient/include/media/IAudioPolicyService.h b/media/libaudioclient/include/media/IAudioPolicyService.h
index fe54dc5..779ca43 100644
--- a/media/libaudioclient/include/media/IAudioPolicyService.h
+++ b/media/libaudioclient/include/media/IAudioPolicyService.h
@@ -64,6 +64,7 @@
                                       audio_stream_type_t *stream,
                                       pid_t pid,
                                       uid_t uid,
+                                      const String16& opPackageName,
                                       const audio_config_t *config,
                                       audio_output_flags_t flags,
                                       audio_port_handle_t *selectedDeviceId,