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-rw-r--r--src/com/android/providers/downloads/Helpers.java87
1 files changed, 39 insertions, 48 deletions
diff --git a/src/com/android/providers/downloads/Helpers.java b/src/com/android/providers/downloads/Helpers.java
index f1f23b17..cbcae5f4 100644
--- a/src/com/android/providers/downloads/Helpers.java
+++ b/src/com/android/providers/downloads/Helpers.java
@@ -33,8 +33,6 @@ import android.util.Log;
import android.webkit.MimeTypeMap;
import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
import java.util.Random;
import java.util.Set;
import java.util.regex.Matcher;
@@ -75,18 +73,20 @@ public class Helpers {
/**
* Exception thrown from methods called by generateSaveFile() for any fatal error.
*/
- private static class GenerateSaveFileError extends Exception {
+ public static class GenerateSaveFileError extends Exception {
int mStatus;
+ String mMessage;
- public GenerateSaveFileError(int status) {
+ public GenerateSaveFileError(int status, String message) {
mStatus = status;
+ mMessage = message;
}
}
/**
- * Creates a filename (where the file should be saved) from a uri.
+ * Creates a filename (where the file should be saved) from info about a download.
*/
- public static DownloadFileInfo generateSaveFile(
+ public static String generateSaveFile(
Context context,
String url,
String hint,
@@ -95,40 +95,31 @@ public class Helpers {
String mimeType,
int destination,
long contentLength,
- boolean isPublicApi) throws FileNotFoundException {
-
- if (!canHandleDownload(context, mimeType, destination, isPublicApi)) {
- return new DownloadFileInfo(null, null, Downloads.Impl.STATUS_NOT_ACCEPTABLE);
- }
-
- String fullFilename;
- try {
- if (destination == Downloads.Impl.DESTINATION_FILE_URI) {
- fullFilename = getPathForFileUri(hint, contentLength);
- } else {
- fullFilename = chooseFullPath(context, url, hint, contentDisposition,
- contentLocation, mimeType, destination,
- contentLength);
- }
- } catch (GenerateSaveFileError exc) {
- return new DownloadFileInfo(null, null, exc.mStatus);
+ boolean isPublicApi) throws GenerateSaveFileError {
+ checkCanHandleDownload(context, mimeType, destination, isPublicApi);
+ if (destination == Downloads.Impl.DESTINATION_FILE_URI) {
+ return getPathForFileUri(hint, contentLength);
+ } else {
+ return chooseFullPath(context, url, hint, contentDisposition, contentLocation, mimeType,
+ destination, contentLength);
}
-
- return new DownloadFileInfo(fullFilename, new FileOutputStream(fullFilename), 0);
}
private static String getPathForFileUri(String hint, long contentLength)
throws GenerateSaveFileError {
if (!isExternalMediaMounted()) {
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_DEVICE_NOT_FOUND_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_DEVICE_NOT_FOUND_ERROR,
+ "external media not mounted");
}
String path = Uri.parse(hint).getPath();
if (new File(path).exists()) {
Log.d(Constants.TAG, "File already exists: " + path);
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_FILE_ALREADY_EXISTS_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_FILE_ALREADY_EXISTS_ERROR,
+ "requested destination file already exists");
}
if (getAvailableBytes(getFilesystemRoot(path)) < contentLength) {
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_INSUFFICIENT_SPACE_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_INSUFFICIENT_SPACE_ERROR,
+ "insufficient space on external storage");
}
return path;
@@ -179,19 +170,17 @@ public class Helpers {
return chooseUniqueFilename(destination, filename, extension, recoveryDir);
}
- private static boolean canHandleDownload(Context context, String mimeType, int destination,
- boolean isPublicApi) {
+ private static void checkCanHandleDownload(Context context, String mimeType, int destination,
+ boolean isPublicApi) throws GenerateSaveFileError {
if (isPublicApi) {
- return true;
+ return;
}
if (destination == Downloads.Impl.DESTINATION_EXTERNAL
|| destination == Downloads.Impl.DESTINATION_CACHE_PARTITION_PURGEABLE) {
if (mimeType == null) {
- if (Config.LOGD) {
- Log.d(Constants.TAG, "external download with no mime type not allowed");
- }
- return false;
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_NOT_ACCEPTABLE,
+ "external download with no mime type not allowed");
}
if (!DrmRawContent.DRM_MIMETYPE_MESSAGE_STRING.equalsIgnoreCase(mimeType)) {
// Check to see if we are allowed to download this file. Only files
@@ -212,14 +201,14 @@ public class Helpers {
//Log.i(Constants.TAG, "*** FILENAME QUERY " + intent + ": " + list);
if (ri == null) {
- if (Config.LOGD) {
- Log.d(Constants.TAG, "no handler found for type " + mimeType);
+ if (Constants.LOGV) {
+ Log.v(Constants.TAG, "no handler found for type " + mimeType);
}
- return false;
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_NOT_ACCEPTABLE,
+ "no handler found for this download type");
}
}
}
- return true;
}
private static File locateDestinationDirectory(Context context, String mimeType,
@@ -239,23 +228,24 @@ public class Helpers {
private static File getExternalDestination(long contentLength) throws GenerateSaveFileError {
if (!isExternalMediaMounted()) {
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_DEVICE_NOT_FOUND_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_DEVICE_NOT_FOUND_ERROR,
+ "external media not mounted");
}
File root = Environment.getExternalStorageDirectory();
if (getAvailableBytes(root) < contentLength) {
// Insufficient space.
Log.d(Constants.TAG, "download aborted - not enough free space");
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_INSUFFICIENT_SPACE_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_INSUFFICIENT_SPACE_ERROR,
+ "insufficient space on external media");
}
File base = new File(root.getPath() + Constants.DEFAULT_DL_SUBDIR);
if (!base.isDirectory() && !base.mkdir()) {
// Can't create download directory, e.g. because a file called "download"
// already exists at the root level, or the SD card filesystem is read-only.
- Log.d(Constants.TAG, "download aborted - can't create base directory "
- + base.getPath());
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_FILE_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_FILE_ERROR,
+ "unable to create external downloads directory " + base.getPath());
}
return base;
}
@@ -278,9 +268,9 @@ public class Helpers {
// Insufficient space; try discarding purgeable files.
if (!discardPurgeableFiles(context, contentLength - bytesAvailable)) {
// No files to purge, give up.
- Log.d(Constants.TAG,
- "download aborted - not enough free space in internal storage");
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_INSUFFICIENT_SPACE_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_INSUFFICIENT_SPACE_ERROR,
+ "not enough free space in internal download storage, unable to free any "
+ + "more");
}
bytesAvailable = getAvailableBytes(base);
}
@@ -482,7 +472,8 @@ public class Helpers {
sequence += sRandom.nextInt(magnitude) + 1;
}
}
- throw new GenerateSaveFileError(Downloads.Impl.STATUS_FILE_ERROR);
+ throw new GenerateSaveFileError(Downloads.Impl.STATUS_FILE_ERROR,
+ "failed to generate an unused filename on internal download storage");
}
/**
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 09:37:54 +0000