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author | Gloria Wang <gwang@google.com> | 2011-02-16 11:58:51 -0800 |
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committer | Gloria Wang <gwang@google.com> | 2011-04-19 15:16:47 -0700 |
commit | 0a17c2a28738d6ecb274def0e8e54f556d89f5f3 (patch) | |
tree | 7a253972d336b5ce0832344deae9cf06cfbb309d /src/com/android/providers/downloads/DownloadDrmHelper.java | |
parent | 21775dca6a8d39c2d46532a43d01fcfce795a2f2 (diff) | |
download | android_packages_providers_DownloadProvider-0a17c2a28738d6ecb274def0e8e54f556d89f5f3.tar.gz android_packages_providers_DownloadProvider-0a17c2a28738d6ecb274def0e8e54f556d89f5f3.tar.bz2 android_packages_providers_DownloadProvider-0a17c2a28738d6ecb274def0e8e54f556d89f5f3.zip |
Download provider change for DRM Forward Lock plugin:
to convert .dm files to .fl files during downloading
For bug 3188041
Change-Id: I882b851664432fba3e57dc25a6be827b48006e69
Diffstat (limited to 'src/com/android/providers/downloads/DownloadDrmHelper.java')
-rw-r--r-- | src/com/android/providers/downloads/DownloadDrmHelper.java | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/com/android/providers/downloads/DownloadDrmHelper.java b/src/com/android/providers/downloads/DownloadDrmHelper.java new file mode 100644 index 00000000..10cb792c --- /dev/null +++ b/src/com/android/providers/downloads/DownloadDrmHelper.java @@ -0,0 +1,110 @@ +/* + * Copyright (C) 2011 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. + * + */ + +package com.android.providers.downloads; + +import android.content.Context; +import android.drm.DrmManagerClient; +import android.util.Log; + +public class DownloadDrmHelper { + + /** The MIME type of special DRM files */ + public static final String MIMETYPE_DRM_MESSAGE = "application/vnd.oma.drm.message"; + + /** The extensions of special DRM files */ + public static final String EXTENSION_DRM_MESSAGE = ".dm"; + + public static final String EXTENSION_INTERNAL_FWDL = ".fl"; + + /** + * Checks if the Media Type is a DRM Media Type + * + * @param drmManagerClient A DrmManagerClient + * @param mimetype Media Type to check + * @return True if the Media Type is DRM else false + */ + public static boolean isDrmMimeType(Context context, String mimetype) { + boolean result = false; + if (context != null) { + try { + DrmManagerClient drmClient = new DrmManagerClient(context); + if (drmClient != null && mimetype != null && mimetype.length() > 0) { + result = drmClient.canHandle("", mimetype); + } + } catch (IllegalArgumentException e) { + Log.w(Constants.TAG, + "DrmManagerClient instance could not be created, context is Illegal."); + } catch (IllegalStateException e) { + Log.w(Constants.TAG, "DrmManagerClient didn't initialize properly."); + } + } + return result; + } + + /** + * Checks if the Media Type needs to be DRM converted + * + * @param mimetype Media type of the content + * @return True if convert is needed else false + */ + public static boolean isDrmConvertNeeded(String mimetype) { + return MIMETYPE_DRM_MESSAGE.equals(mimetype); + } + + /** + * Modifies the file extension for a DRM Forward Lock file NOTE: This + * function shouldn't be called if the file shouldn't be DRM converted + */ + public static String modifyDrmFwLockFileExtension(String filename) { + if (filename != null) { + int extensionIndex; + extensionIndex = filename.lastIndexOf("."); + if (extensionIndex != -1) { + filename = filename.substring(0, extensionIndex); + } + filename = filename.concat(EXTENSION_INTERNAL_FWDL); + } + return filename; + } + + /** + * Gets the original mime type of DRM protected content. + * + * @param context The context + * @param path Path to the file + * @param containingMime The current mime type of of the file i.e. the + * containing mime type + * @return The original mime type of the file if DRM protected else the + * currentMime + */ + public static String getOriginalMimeType(Context context, String path, String containingMime) { + String result = containingMime; + DrmManagerClient drmClient = new DrmManagerClient(context); + try { + if (drmClient.canHandle(path, null)) { + result = drmClient.getOriginalMimeType(path); + } + } catch (IllegalArgumentException ex) { + Log.w(Constants.TAG, + "Can't get original mime type since path is null or empty string."); + } catch (IllegalStateException ex) { + Log.w(Constants.TAG, "DrmManagerClient didn't initialize properly."); + } + return result; + } +} |