Process recurring events, exceptions etc.

app/src/main/java/at/bitfire/davdroid/Constants.java

@@ -17,7 +17,5 @@ public class Constants {
 		WEB_URL_HELP = "https://davdroid.bitfire.at/configuration?pk_campaign=davdroid-app",
 		WEB_URL_VIEW_LOGS = "https://github.com/bitfireAT/davdroid/wiki/How-to-view-the-logs";
 
-	//public static final ProdId ICAL_PRODID = new ProdId("-//bitfire web engineering//DAVdroid " + BuildConfig.VERSION_CODE + " (ical4j 2.0-beta1)//EN");
-
     public static final Logger log = LoggerFactory.getLogger("davdroid");
 }

app/src/main/java/at/bitfire/davdroid/HttpClient.java

@@ -118,9 +118,6 @@ public class HttpClient extends OkHttpClient {
             }
         }
 
-        // don't follow redirects automatically because this may rewrite DAV methods to GET
-        setFollowRedirects(false);
-
         // set timeouts
         setConnectTimeout(30, TimeUnit.SECONDS);
         setWriteTimeout(15, TimeUnit.SECONDS);

app/src/main/java/at/bitfire/davdroid/resource/LocalCalendar.java

@@ -10,10 +10,13 @@ package at.bitfire.davdroid.resource;
 
 import android.accounts.Account;
 import android.content.ContentProviderClient;
+import android.content.ContentProviderOperation;
 import android.content.ContentResolver;
+import android.content.ContentUris;
 import android.content.ContentValues;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.Build;
 import android.os.RemoteException;
 import android.provider.CalendarContract;
 import android.provider.CalendarContract.Calendars;
@@ -22,8 +25,14 @@ import android.provider.CalendarContract.Reminders;
 
 import com.google.common.base.Joiner;
 
+import java.io.FileNotFoundException;
+import java.util.LinkedList;
+import java.util.List;
+
+import at.bitfire.davdroid.Constants;
 import at.bitfire.ical4android.AndroidCalendar;
 import at.bitfire.ical4android.AndroidCalendarFactory;
+import at.bitfire.ical4android.BatchOperation;
 import at.bitfire.ical4android.CalendarStorageException;
 import at.bitfire.vcard4android.ContactsStorageException;
 import lombok.Cleanup;
@@ -34,9 +43,13 @@ public class LocalCalendar extends AndroidCalendar implements LocalCollection {
 
     public static final String COLUMN_CTAG = Calendars.CAL_SYNC1;
 
+    protected static final int
+            DIRTY_INCREASE_SEQUENCE = 1,
+            DIRTY_DONT_INCREASE_SEQUENCE = 2;
+
     static String[] BASE_INFO_COLUMNS = new String[] {
             Events._ID,
-            LocalEvent.COLUMN_FILENAME,
+            Events._SYNC_ID,
             LocalEvent.COLUMN_ETAG
     };
 
@@ -59,38 +72,61 @@ public class LocalCalendar extends AndroidCalendar implements LocalCollection {
         values.put(Calendars.NAME, info.getURL());
         values.put(Calendars.CALENDAR_DISPLAY_NAME, info.getTitle());
         values.put(Calendars.CALENDAR_COLOR, info.color != null ? info.color : defaultColor);
-        values.put(Calendars.CALENDAR_ACCESS_LEVEL, info.readOnly ? Calendars.CAL_ACCESS_READ : Calendars.CAL_ACCESS_OWNER);
+
+        if (info.isReadOnly())
+            values.put(Calendars.CALENDAR_ACCESS_LEVEL, Calendars.CAL_ACCESS_READ);
+        else {
+            values.put(Calendars.CALENDAR_ACCESS_LEVEL, Calendars.CAL_ACCESS_OWNER);
+            values.put(Calendars.CAN_MODIFY_TIME_ZONE, 1);
+            values.put(Calendars.CAN_ORGANIZER_RESPOND, 1);
+        }
+
         values.put(Calendars.OWNER_ACCOUNT, account.name);
         values.put(Calendars.SYNC_EVENTS, 1);
+        values.put(Calendars.VISIBLE, 1);
         if (info.timezone != null) {
             // TODO parse VTIMEZONE
             // values.put(Calendars.CALENDAR_TIME_ZONE, DateUtils.findAndroidTimezoneID(info.timezone));
         }
         values.put(Calendars.ALLOWED_REMINDERS, Reminders.METHOD_ALERT);
+        if (Build.VERSION.SDK_INT >= 15) {
             values.put(Calendars.ALLOWED_AVAILABILITY, Joiner.on(",").join(Reminders.AVAILABILITY_TENTATIVE, Reminders.AVAILABILITY_FREE, Reminders.AVAILABILITY_BUSY));
             values.put(Calendars.ALLOWED_ATTENDEE_TYPES, Joiner.on(",").join(CalendarContract.Attendees.TYPE_OPTIONAL, CalendarContract.Attendees.TYPE_REQUIRED, CalendarContract.Attendees.TYPE_RESOURCE));
+        }
         return create(account, provider, values);
     }
 
 
     @Override
     public LocalResource[] getAll() throws CalendarStorageException, ContactsStorageException {
-        return (LocalEvent[])queryEvents(null, null);
+        return (LocalEvent[])queryEvents(Events.ORIGINAL_ID + " IS NULL", null);
     }
 
     @Override
     public LocalEvent[] getDeleted() throws CalendarStorageException {
-        return (LocalEvent[])queryEvents(Events.DELETED + "!=0", null);
+        return (LocalEvent[])queryEvents(Events.DELETED + "!=0 AND " + Events.ORIGINAL_ID + " IS NULL", null);
     }
 
     @Override
     public LocalEvent[] getWithoutFileName() throws CalendarStorageException {
-        return (LocalEvent[])queryEvents(LocalEvent.COLUMN_FILENAME + " IS NULL", null);
+        return (LocalEvent[])queryEvents(Events._SYNC_ID + " IS NULL AND " + Events.ORIGINAL_ID + " IS NULL", null);
     }
 
     @Override
-    public LocalResource[] getDirty() throws CalendarStorageException {
+    public LocalResource[] getDirty() throws CalendarStorageException, FileNotFoundException {
-        return (LocalEvent[])queryEvents(Events.DIRTY + "!=0", null);
+        List<LocalResource> dirty = new LinkedList<>();
+
+        // get dirty events which are not required to have an increased SEQUENCE value
+        for (LocalEvent event : (LocalEvent[])queryEvents(Events.DIRTY + "=" + DIRTY_DONT_INCREASE_SEQUENCE + " AND " + Events.ORIGINAL_ID + " IS NULL", null))
+            dirty.add(event);
+
+        // get dirty events which are required to have an increased SEQUENCE value
+        for (LocalEvent event : (LocalEvent[])queryEvents(Events.DIRTY + "=" + DIRTY_INCREASE_SEQUENCE + " AND " + Events.ORIGINAL_ID + " IS NULL", null)) {
+            event.getEvent().sequence++;
+            dirty.add(event);
+        }
+
+        return dirty.toArray(new LocalResource[dirty.size()]);
     }
 
 
@@ -117,6 +153,75 @@ public class LocalCalendar extends AndroidCalendar implements LocalCollection {
         }
     }
 
+    public void processDirtyExceptions() throws CalendarStorageException {
+        // process deleted exceptions
+        Constants.log.info("Processing deleted exceptions");
+        try {
+            @Cleanup Cursor cursor = provider.query(
+                    syncAdapterURI(Events.CONTENT_URI),
+                    new String[] { Events._ID, Events.ORIGINAL_ID, LocalEvent.COLUMN_SEQUENCE },
+                    Events.DELETED + "!=0 AND " + Events.ORIGINAL_ID + " IS NOT NULL", null, null);
+            while (cursor != null && cursor.moveToNext()) {
+                Constants.log.debug("Found deleted exception, removing; then re-schuling original event");
+                long    id = cursor.getLong(0),             // can't be null (by definition)
+                        originalID = cursor.getLong(1);     // can't be null (by query)
+                int sequence = cursor.isNull(2) ? 0 : cursor.getInt(2);
+
+                // get original event's SEQUENCE
+                @Cleanup Cursor cursor2 = provider.query(
+                        syncAdapterURI(ContentUris.withAppendedId(Events.CONTENT_URI, originalID)),
+                        new String[] { LocalEvent.COLUMN_SEQUENCE },
+                        null, null, null);
+                int originalSequence = cursor.isNull(0) ? 0 : cursor.getInt(0);
+
+                BatchOperation batch = new BatchOperation(provider);
+                // re-schedule original event and set it to DIRTY
+                batch.enqueue(ContentProviderOperation.newUpdate(
+                        syncAdapterURI(ContentUris.withAppendedId(Events.CONTENT_URI, originalID)))
+                        .withValue(LocalEvent.COLUMN_SEQUENCE, originalSequence)
+                        .withValue(Events.DIRTY, DIRTY_INCREASE_SEQUENCE)
+                        .build());
+                // remove exception
+                batch.enqueue(ContentProviderOperation.newDelete(
+                        syncAdapterURI(ContentUris.withAppendedId(Events.CONTENT_URI, id))).build());
+                batch.commit();
+            }
+        } catch (RemoteException e) {
+            throw new CalendarStorageException("Couldn't process locally modified exception", e);
+        }
+
+        // process dirty exceptions
+        Constants.log.info("Processing dirty exceptions");
+        try {
+            @Cleanup Cursor cursor = provider.query(
+                    syncAdapterURI(Events.CONTENT_URI),
+                    new String[] { Events._ID, Events.ORIGINAL_ID, LocalEvent.COLUMN_SEQUENCE },
+                    Events.DIRTY + "!=0 AND " + Events.ORIGINAL_ID + " IS NOT NULL", null, null);
+            while (cursor != null && cursor.moveToNext()) {
+                Constants.log.debug("Found dirty exception, increasing SEQUENCE to re-schedule");
+                long    id = cursor.getLong(0),             // can't be null (by definition)
+                        originalID = cursor.getLong(1);     // can't be null (by query)
+                int sequence = cursor.isNull(2) ? 0 : cursor.getInt(2);
+
+                BatchOperation batch = new BatchOperation(provider);
+                // original event to DIRTY
+                batch.enqueue(ContentProviderOperation.newUpdate(
+                        syncAdapterURI(ContentUris.withAppendedId(Events.CONTENT_URI, originalID)))
+                        .withValue(Events.DIRTY, DIRTY_DONT_INCREASE_SEQUENCE)
+                        .build());
+                // increase SEQUENCE and set DIRTY to 0
+                batch.enqueue(ContentProviderOperation.newUpdate(
+                                syncAdapterURI(ContentUris.withAppendedId(Events.CONTENT_URI, id)))
+                                .withValue(LocalEvent.COLUMN_SEQUENCE, sequence + 1)
+                                .withValue(Events.DIRTY, 0)
+                                .build());
+                batch.commit();
+            }
+        } catch (RemoteException e) {
+            throw new CalendarStorageException("Couldn't process locally modified exception", e);
+        }
+    }
+
 
     public static class Factory implements AndroidCalendarFactory {
         public static final Factory INSTANCE = new Factory();

app/src/main/java/at/bitfire/davdroid/resource/LocalCollection.java

@@ -10,6 +10,8 @@ package at.bitfire.davdroid.resource;
 
 import android.provider.ContactsContract;
 
+import java.io.FileNotFoundException;
+
 import at.bitfire.ical4android.CalendarStorageException;
 import at.bitfire.vcard4android.ContactsStorageException;
 
@@ -17,7 +19,7 @@ public interface LocalCollection {
 
     LocalResource[] getDeleted() throws CalendarStorageException, ContactsStorageException;
     LocalResource[] getWithoutFileName()  throws CalendarStorageException, ContactsStorageException;
-    LocalResource[] getDirty() throws CalendarStorageException, ContactsStorageException;
+    LocalResource[] getDirty() throws CalendarStorageException, ContactsStorageException, FileNotFoundException;
 
     LocalResource[] getAll() throws CalendarStorageException, ContactsStorageException;
 

app/src/main/java/at/bitfire/davdroid/resource/LocalContact.java

@@ -22,7 +22,7 @@ import ezvcard.Ezvcard;
 
 public class LocalContact extends AndroidContact implements LocalResource {
     static {
-        Contact.productID = "+//IDN bitfire.at//DAVdroid/" + BuildConfig.VERSION_NAME + " ez-vcard/" + Ezvcard.VERSION;
+        Contact.productID = "+//IDN bitfire.at//DAVdroid/" + BuildConfig.VERSION_NAME + "vcard4android ez-vcard/" + Ezvcard.VERSION;
     }
 
     protected LocalContact(AndroidAddressBook addressBook, long id, String fileName, String eTag) {

app/src/main/java/at/bitfire/davdroid/resource/LocalEvent.java

@@ -10,38 +10,47 @@ package at.bitfire.davdroid.resource;
 
 import android.content.ContentProviderOperation;
 import android.content.ContentValues;
-import android.net.Uri;
 import android.os.RemoteException;
 import android.provider.CalendarContract;
+import android.provider.CalendarContract.Events;
 
+import net.fortuna.ical4j.model.property.ProdId;
+
+import at.bitfire.davdroid.BuildConfig;
 import at.bitfire.ical4android.AndroidCalendar;
 import at.bitfire.ical4android.AndroidEvent;
 import at.bitfire.ical4android.AndroidEventFactory;
 import at.bitfire.ical4android.CalendarStorageException;
 import at.bitfire.ical4android.Event;
 import lombok.Getter;
+import lombok.NonNull;
 import lombok.Setter;
 
 public class LocalEvent extends AndroidEvent implements LocalResource {
+    static {
+        Event.prodId = new ProdId("+//IDN bitfire.at//DAVdroid/" + BuildConfig.VERSION_NAME + " ical4android ical4j/2.x");
+    }
 
-    static final String COLUMN_FILENAME = CalendarContract.Events.SYNC_DATA1,
+    static final String COLUMN_ETAG = CalendarContract.Events.SYNC_DATA1,
-                        COLUMN_ETAG = CalendarContract.Events.SYNC_DATA2,
+                        COLUMN_UID = CalendarContract.Events.UID_2445,
-                        COLUMN_UID = CalendarContract.Events.UID_2445;
+                        COLUMN_SEQUENCE = CalendarContract.Events.SYNC_DATA2;
 
     @Getter protected String fileName;
     @Getter @Setter protected String eTag;
 
-    public LocalEvent(AndroidCalendar calendar, Event event, String fileName, String eTag) {
+    public LocalEvent(@NonNull AndroidCalendar calendar, Event event, String fileName, String eTag) {
         super(calendar, event);
         this.fileName = fileName;
         this.eTag = eTag;
     }
 
-    protected LocalEvent(AndroidCalendar calendar, long id, ContentValues baseInfo) {
+    protected LocalEvent(@NonNull AndroidCalendar calendar, long id, ContentValues baseInfo) {
         super(calendar, id, baseInfo);
-        fileName = baseInfo.getAsString(COLUMN_FILENAME);
+        if (baseInfo != null) {
+            fileName = baseInfo.getAsString(Events._SYNC_ID);
             eTag = baseInfo.getAsString(COLUMN_ETAG);
         }
+    }
 
 
     /* process LocalEvent-specific fields */
@@ -49,17 +58,31 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
     @Override
     protected void populateEvent(ContentValues values) {
         super.populateEvent(values);
-        fileName = values.getAsString(COLUMN_FILENAME);
+        fileName = values.getAsString(Events._SYNC_ID);
         eTag = values.getAsString(COLUMN_ETAG);
         event.uid = values.getAsString(COLUMN_UID);
+
+        if (values.containsKey(COLUMN_SEQUENCE))
+            event.sequence = values.getAsInteger(COLUMN_SEQUENCE);
     }
 
     @Override
     protected void buildEvent(Event recurrence, ContentProviderOperation.Builder builder) {
         super.buildEvent(recurrence, builder);
-        builder .withValue(COLUMN_FILENAME, fileName)
+
-                .withValue(COLUMN_ETAG, eTag)
+        boolean buildException = recurrence != null;
-                .withValue(COLUMN_UID, event.uid);
+        Event eventToBuild = buildException ? recurrence : event;
+
+        builder .withValue(COLUMN_UID, event.uid)
+                .withValue(COLUMN_SEQUENCE, eventToBuild.sequence)
+                .withValue(CalendarContract.Events.DIRTY, 0)
+                .withValue(CalendarContract.Events.DELETED, 0);
+
+        if (buildException)
+            builder.withValue(Events.ORIGINAL_SYNC_ID, fileName);
+        else
+            builder .withValue(Events._SYNC_ID, fileName)
+                    .withValue(COLUMN_ETAG, eTag);
     }
 
 
@@ -70,7 +93,7 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
             String newFileName = uid + ".ics";
 
             ContentValues values = new ContentValues(2);
-            values.put(COLUMN_FILENAME, newFileName);
+            values.put(Events._SYNC_ID, newFileName);
             values.put(COLUMN_UID, uid);
             calendar.provider.update(eventSyncURI(), values, null, null);
 
@@ -89,6 +112,8 @@ public class LocalEvent extends AndroidEvent implements LocalResource {
             ContentValues values = new ContentValues(2);
             values.put(CalendarContract.Events.DIRTY, 0);
             values.put(COLUMN_ETAG, eTag);
+            if (event != null)
+                values.put(COLUMN_SEQUENCE, event.sequence);
             calendar.provider.update(eventSyncURI(), values, null, null);
 
             this.eTag = eTag;

app/src/main/java/at/bitfire/davdroid/syncadapter/CalendarSyncManager.java

@@ -101,6 +101,13 @@ public class CalendarSyncManager extends SyncManager {
         localCalendar().update(values);
     }
 
+    @Override
+    protected void prepareDirty() throws CalendarStorageException, ContactsStorageException {
+        super.prepareDirty();
+
+        localCalendar().processDirtyExceptions();
+    }
+
     @Override
     protected RequestBody prepareUpload(LocalResource resource) throws IOException, CalendarStorageException {
         LocalEvent local = (LocalEvent)resource;

app/src/main/java/at/bitfire/davdroid/syncadapter/CalendarsSyncAdapterService.java

@@ -16,6 +16,7 @@ import android.content.Intent;
 import android.content.SyncResult;
 import android.os.Bundle;
 import android.os.IBinder;
+import android.provider.CalendarContract;
 
 import at.bitfire.davdroid.Constants;
 import at.bitfire.davdroid.resource.LocalCalendar;
@@ -52,7 +53,7 @@ public class CalendarsSyncAdapterService extends Service {
             Constants.log.info("Starting calendar sync (" + authority + ")");
 
             try {
-                for (LocalCalendar calendar : (LocalCalendar[])LocalCalendar.findAll(account, provider, LocalCalendar.Factory.INSTANCE)) {
+                for (LocalCalendar calendar : (LocalCalendar[])LocalCalendar.find(account, provider, LocalCalendar.Factory.INSTANCE, CalendarContract.Calendars.SYNC_EVENTS + "!=0", null)) {
                     Constants.log.info("Synchronizing calendar #"  + calendar.getId() + ", URL: " + calendar.getName());
                     CalendarSyncManager syncManager = new CalendarSyncManager(getContext(), account, extras, provider, syncResult, calendar);
                     syncManager.performSync();

app/src/main/java/at/bitfire/davdroid/syncadapter/SyncManager.java

@@ -24,6 +24,7 @@ import com.squareup.okhttp.HttpUrl;
 import com.squareup.okhttp.RequestBody;
 
 import java.io.IOException;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -34,6 +35,7 @@ import at.bitfire.dav4android.DavResource;
 import at.bitfire.dav4android.exception.DavException;
 import at.bitfire.dav4android.exception.HttpException;
 import at.bitfire.dav4android.exception.PreconditionFailedException;
+import at.bitfire.dav4android.exception.ServiceUnavailableException;
 import at.bitfire.dav4android.property.GetCTag;
 import at.bitfire.dav4android.property.GetETag;
 import at.bitfire.davdroid.Constants;
@@ -50,7 +52,7 @@ abstract public class SyncManager {
     protected final int SYNC_PHASE_PREPARE = 0,
                         SYNC_PHASE_QUERY_CAPABILITIES = 1,
                         SYNC_PHASE_PROCESS_LOCALLY_DELETED = 2,
-                        SYNC_PHASE_PREPARE_LOCALLY_CREATED = 3,
+                        SYNC_PHASE_PREPARE_DIRTY = 3,
                         SYNC_PHASE_UPLOAD_DIRTY = 4,
                         SYNC_PHASE_CHECK_SYNC_STATE = 5,
                         SYNC_PHASE_LIST_LOCAL = 6,
@@ -120,9 +122,9 @@ abstract public class SyncManager {
             Constants.log.info("Processing locally deleted entries");
             processLocallyDeleted();
 
-            syncPhase = SYNC_PHASE_PREPARE_LOCALLY_CREATED;
+            syncPhase = SYNC_PHASE_PREPARE_DIRTY;
-            Constants.log.info("Processing locally created entries");
+            Constants.log.info("Locally preparing dirty entries");
-            processLocallyCreated();
+            prepareDirty();
 
             syncPhase = SYNC_PHASE_UPLOAD_DIRTY;
             Constants.log.info("Uploading dirty entries");
@@ -153,10 +155,18 @@ abstract public class SyncManager {
             } else
                 Constants.log.info("Remote collection didn't change, skipping remote sync");
 
-        } catch (IOException e) {
+        } catch (IOException|ServiceUnavailableException e) {
             Constants.log.error("I/O exception during sync, trying again later", e);
             syncResult.stats.numIoExceptions++;
 
+            if (e instanceof ServiceUnavailableException) {
+                Date retryAfter = ((ServiceUnavailableException) e).retryAfter;
+                if (retryAfter != null) {
+                    // how many seconds to wait? getTime() returns ms, so divide by 1000
+                    syncResult.delayUntil = (retryAfter.getTime() - new Date().getTime()) / 1000;
+                }
+            }
+
         } catch(HttpException|DavException e) {
             Constants.log.error("HTTP/DAV Exception during sync", e);
             syncResult.stats.numParseExceptions++;
@@ -217,7 +227,7 @@ abstract public class SyncManager {
         }
     }
 
-    protected void processLocallyCreated() throws CalendarStorageException, ContactsStorageException {
+    protected void prepareDirty() throws CalendarStorageException, ContactsStorageException {
         // assign file names and UIDs to new contacts so that we can use the file name as an index
         for (LocalResource local : localCollection.getWithoutFileName()) {
             String uuid = UUID.randomUUID().toString();

app/src/main/java/at/bitfire/davdroid/ui/DebugInfoActivity.java

@@ -38,8 +38,6 @@ public class DebugInfoActivity extends Activity {
             KEY_ACCOUNT = "account",
             KEY_PHASE = "phase";
 
-    private static final String APP_ID = "at.bitfire.davdroid";
-
     String report;
 
     @Override
@@ -49,7 +47,7 @@ public class DebugInfoActivity extends Activity {
         setContentView(R.layout.debug_info_activity);
 
         TextView tvReport = (TextView)findViewById(R.id.text_report);
-        tvReport.setText(generateReport(getIntent().getExtras()));
+        tvReport.setText(report = generateReport(getIntent().getExtras()));
     }
 
     @Override
@@ -96,7 +94,7 @@ public class DebugInfoActivity extends Activity {
 
         try {
             PackageManager pm = getPackageManager();
-            String installedFrom = pm.getInstallerPackageName("at.bitfire.davdroid");
+            String installedFrom = pm.getInstallerPackageName(BuildConfig.APPLICATION_ID);
             if (TextUtils.isEmpty(installedFrom))
                 installedFrom = "APK (directly)";
             else {

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

@@ -183,8 +183,8 @@
         <item>Vorbereiten der Synchronisierung</item>
         <item>Abfragen der Server-Fähigkeiten</item>
         <item>Verarbeiten lokal gelöschter Einträge</item>
-        <item>Vorbereiten neuer lokaler Einträge</item>
+        <item>Vorbereiten neuer/geänderter Einträge</item>
-        <item>Hochladen neuer/geänderter lokaler Einträge</item>
+        <item>Hochladen neuer/geänderter Einträge</item>
         <item>Abfragen des Synchronisierungs-Zustands</item>
         <item>Auflisten lokaler Einträge</item>
         <item>Auflisten der Server-Einträge</item>

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

@@ -198,7 +198,7 @@
         <item>preparing synchronization</item>
         <item>querying capabilities</item>
         <item>processing locally deleted entries</item>
-        <item>preparing locally created entries</item>
+        <item>preparing created/modified entries</item>
         <item>uploading created/modified entries</item>
         <item>checking sync state</item>
         <item>listing local entries</item>

ical4android

@@ -1 +1 @@
-Subproject commit 4e1131ae4607b4220e2d37632fd54a987b633849
+Subproject commit ea504f2512ad5e9a85391797bdbdeb6c92871cdf