Merge branch 'fix-855--fs-corruption' into 'master'

Ignore errors that are likely due to filesystem corruption (rebase with added Toast)

Closes #855

See merge request !581

app/src/main/java/org/fdroid/fdroid/Utils.java

@@ -417,13 +417,29 @@ public final class Utils {
 
             byte[] mdbytes = md.digest();
             return toHexString(mdbytes).toLowerCase(Locale.ENGLISH);
-        } catch (IOException | NoSuchAlgorithmException e) {
+        } 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)")) {
+                throw new PotentialFilesystemCorruptionException(e);
+            }
+
+            throw new IllegalArgumentException(e);
+        } catch (NoSuchAlgorithmException e) {
             throw new IllegalArgumentException(e);
         } finally {
             closeQuietly(fis);
         }
     }
 
+    public static class PotentialFilesystemCorruptionException extends IllegalArgumentException {
+        public PotentialFilesystemCorruptionException(IOException e) {
+            super(e);
+        }
+    }
+
     /**
      * Computes the base 16 representation of the byte array argument.
      *

app/src/main/java/org/fdroid/fdroid/data/InstalledAppProviderService.java

@@ -11,12 +11,16 @@ import android.net.Uri;
 import android.os.Process;
 import android.support.annotation.Nullable;
 import android.util.Log;
-
+import android.widget.Toast;
 import org.acra.ACRA;
 import org.fdroid.fdroid.AppUpdateStatusManager;
 import org.fdroid.fdroid.Hasher;
+import org.fdroid.fdroid.R;
 import org.fdroid.fdroid.Utils;
 import org.fdroid.fdroid.data.Schema.InstalledAppTable;
+import rx.functions.Action1;
+import rx.schedulers.Schedulers;
+import rx.subjects.PublishSubject;
 
 import java.io.File;
 import java.io.FilenameFilter;
@@ -25,10 +29,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
-import rx.functions.Action1;
-import rx.schedulers.Schedulers;
-import rx.subjects.PublishSubject;
-
 /**
  * Handles all updates to {@link InstalledAppProvider}, whether checking the contents
  * versus what Android says is installed, or processing {@link Intent}s that come
@@ -249,6 +249,15 @@ public class InstalledAppProviderService extends IntentService {
                         }
 
                         insertAppIntoDb(this, packageInfo, hashType, hash);
+                    } catch (Utils.PotentialFilesystemCorruptionException e) {
+                        String msg = getString(R.string.installed_app__file_corrupt, apk.getAbsolutePath());
+                        Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
+                        Log.e(TAG, "Encountered potential filesystem corruption, or other unknown " +
+                                "problem when calculating hash of " + apk.getAbsolutePath() + ". " +
+                                "It is unlikely F-Droid can do anything about this, and this " +
+                                "likely happened in the background. As such, we will continue without " +
+                                "interrupting the user by asking them to send a crash report.");
+                        return;
                     } catch (IllegalArgumentException e) {
                         Utils.debugLog(TAG, e.getMessage());
                         ACRA.getErrorReporter().handleException(e, false);

app/src/main/res/values/strings.xml

@@ -93,6 +93,7 @@ This often occurs with apps installed via Google Play or other sources, if they
     <string name="installed_app__updates_ignored_for_suggested_version">Updates ignored for Version %1$s</string>
     <!-- The inline download button shown in the "Updates" screen only uses an icon and so requires
     some descriptive text for the TTS engine -->
+    <string name="installed_app__file_corrupt">F-Droid received EIO error: %s is probably corrupt!</string>
     <string name="updates__tts__download_app">Download</string>
     <string name="updates__tts__download_updates_for_all_apps">Download all updates</string>