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do not crash if file vanishes during getBinaryHash()

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APKs can be deleted at any time, either by being uninstalled or deleted
from the cache.
This commit is contained in:
Hans-Christoph Steiner 2018-03-07 15:23:01 +01:00
parent 86cc977746
commit 6055874d9d
1 changed files with 43 additions and 38 deletions
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23
app/src/main/java/org/fdroid/fdroid/Utils.java
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@ -38,12 +38,10 @@ import android.text.style.TypefaceSpan;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
import com.nostra13.universalimageloader.utils.StorageUtils;
import org.fdroid.fdroid.compat.FileCompat;
import org.fdroid.fdroid.data.Repo;
import org.fdroid.fdroid.data.SanitizedFile;
@ -400,7 +398,16 @@ public final class Utils {
/**
* Get the checksum hash of the file {@code apk} using the algorithm in {@code algo}.
* {@code apk} must exist on the filesystem and {@code algo} must be supported
* by this device, otherwise an {@link IllegalArgumentException} is thrown.
* by this device, otherwise an {@link IllegalArgumentException} is thrown. This
* method must be very defensive about checking whether the file exists, since APKs
* can be uninstalled/deleted in background at any time, even if this is in the
* middle of running.
* <p>
* This also will run into filesystem corruption if the device is having trouble.
* So hide those so F-Droid does not pop up crash reports about that. As such this
* exception-message-parsing-and-throwing-a-new-ignorable-exception-hackery is
* probably warranted. See https://www.gitlab.com/fdroid/fdroidclient/issues/855
* for more detail.
*/
public static String getBinaryHash(File apk, String algo) {
FileInputStream fis = null;
@ -418,14 +425,12 @@ public final class Utils {
byte[] mdbytes = md.digest();
return toHexString(mdbytes).toLowerCase(Locale.ENGLISH);
} catch (IOException e) {
// The annoyance (potentially) caused by miscellaneous filesystem corruption results in
// F-Droid constantly popping up crash reports when F-Droid isn't even open. As such this
// exception-message-parsing-and-throwing-a-new-ignorable-exception-hackery is probably
// warranted. See https://www.gitlab.com/fdroid/fdroidclient/issues/855 for more detail.
if (e.getMessage().contains("read failed: EIO (I/O error)")) {
String message = e.getMessage();
if (message.contains("read failed: EIO (I/O error)")) {
throw new PotentialFilesystemCorruptionException(e);
} else if (message.contains(" ENOENT ")) {
Utils.debugLog(TAG, apk + " vanished: " + message);
}
throw new IllegalArgumentException(e);
} catch (NoSuchAlgorithmException e) {
throw new IllegalArgumentException(e);