Fix "can't edit contact" / "account doesn't show up" and other bugs; refactoring

* support for phonetic names (closes #19)
* update contacts.xml, tested with 4.0 (Samsung), 4.2 (Cyanogen), 4.3 (Cyanogen) (fixes #5, fixes #6, fixes #7)
* smarter error handling (1): notify sync manager in case of HTTP auth errors
* smarter error handling (2): just ignore the dubious resources instead of notifying Android sync service
* refactoring: created DavSyncAdapter and move common code to it
* version bump to 0.3.4-alpha

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="at.bitfire.davdroid"
-    android:versionCode="6"
+    android:versionCode="7"
-    android:versionName="0.3.3-alpha" >
+    android:versionName="0.3.4-alpha" >
 
     <uses-sdk
         android:minSdkVersion="14"
@@ -34,7 +34,8 @@
         </service>
         <service
             android:name=".syncadapter.ContactsSyncAdapterService"
-            android:exported="true" >
+            android:exported="true"
+            android:process=":sync" >
             <intent-filter>
                 <action android:name="android.content.SyncAdapter" />
             </intent-filter>
@@ -48,7 +49,8 @@
         </service>
         <service
             android:name=".syncadapter.CalendarsSyncAdapterService"
-            android:exported="true" >
+            android:exported="true"
+            android:process=":sync" >
             <intent-filter>
                 <action android:name="android.content.SyncAdapter" />
             </intent-filter>

res/values/strings.xml

@@ -30,6 +30,6 @@
     <string name="calendars">Calendars</string>
     <string name="select_address_book">Select up to one address book (tap again to unselect):</string>
     <string name="select_calendars">Select your calendars:</string>
-    <string name="auth_preemptive">Preemptive authentification (recommended, but incompatible with Digest auth)</string>
+    <string name="auth_preemptive">Preemptive authentication (recommended, but incompatible with Digest auth)</string>
 
 </resources>

res/xml/account_prefs.xml

@@ -4,7 +4,7 @@
     <Preference android:title="DAVdroid Web site" >
         <intent
             android:action="android.intent.action.VIEW"
-            android:data="http://davdroid.bitfire.at" />
+            android:data="http://davdroid.bitfire.at/?pk_campaign=in-app" />
     </Preference>
 
 </PreferenceScreen>

res/xml/contacts.xml

@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<ContactsSource xmlns:android="http://schemas.android.com/apk/res/android">
+<ContactsAccountType
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    
     <EditSchema>
 		<DataKind
 		    kind="name"
@@ -7,9 +9,9 @@
 		    supportsDisplayName="true"
 		    supportsMiddleName="true"
 		    supportsFamilyName="true"
-            supportsPhoneticFamilyName="false"
+		    supportsPhoneticFamilyName="true"
-            supportsPhoneticGivenName="false"
+		    supportsPhoneticGivenName="true"
-            supportsPhoneticMiddleName="false"
+		    supportsPhoneticMiddleName="true"
 		    supportsPrefix="true"
 		    supportsSuffix="true" />
 		
@@ -40,7 +42,9 @@
 		    maxOccurs="1" />
 		
 		<DataKind kind="website" />
-        <DataKind kind="note" />
+		<DataKind
+		    kind="note"
+    		maxOccurs="1" />
 		
 		<DataKind
 		    dateWithTime="false"
@@ -51,4 +55,4 @@
 		        yearOptional="false" />
 		</DataKind>
 	</EditSchema>
-</ContactsSource>
+</ContactsAccountType>

src/at/bitfire/davdroid/Constants.java

@@ -9,7 +9,7 @@ package at.bitfire.davdroid;
 
 public class Constants {
 	public static final String
-		APP_VERSION = "0.3.3-alpha",
+		APP_VERSION = "0.3.4-alpha",
 		
 		ACCOUNT_TYPE = "bitfire.at.davdroid",
 		

src/at/bitfire/davdroid/ical4j/PhoneticFirstName.java

@@ -0,0 +1,46 @@
+package at.bitfire.davdroid.ical4j;
+
+import java.util.List;
+
+import net.fortuna.ical4j.model.ValidationException;
+import net.fortuna.ical4j.vcard.Group;
+import net.fortuna.ical4j.vcard.Parameter;
+import net.fortuna.ical4j.vcard.Property;
+import net.fortuna.ical4j.vcard.PropertyFactory;
+
+public class PhoneticFirstName extends Property {
+	private static final long serialVersionUID = 8096989375023262021L;
+
+	public static final String PROPERTY_NAME = "PHONETIC-FIRST-NAME";
+	
+	protected String phoneticFirstName;
+	
+	
+	public PhoneticFirstName(String value) {
+		super(PROPERTY_NAME);
+		
+		phoneticFirstName = value;
+	}
+	
+
+	@Override
+	public String getValue() {
+		return phoneticFirstName;
+	}
+
+	@Override
+	public void validate() throws ValidationException {
+	}
+	
+	public static class Factory implements PropertyFactory<Property> {
+		@Override
+		public PhoneticFirstName createProperty(List<Parameter> params, String value) {
+			return new PhoneticFirstName(value);
+		}
+
+		@Override
+		public PhoneticFirstName createProperty(Group group, List<Parameter> params, String value) {
+			return new PhoneticFirstName(value);
+		}
+	}
+}

src/at/bitfire/davdroid/ical4j/PhoneticLastName.java

@@ -0,0 +1,46 @@
+package at.bitfire.davdroid.ical4j;
+
+import java.util.List;
+
+import net.fortuna.ical4j.model.ValidationException;
+import net.fortuna.ical4j.vcard.Group;
+import net.fortuna.ical4j.vcard.Parameter;
+import net.fortuna.ical4j.vcard.Property;
+import net.fortuna.ical4j.vcard.PropertyFactory;
+
+public class PhoneticLastName extends Property {
+	private static final long serialVersionUID = 8637699713562385556L;
+
+	public static final String PROPERTY_NAME = "PHONETIC-LAST-NAME";
+	
+	protected String phoneticFirstName;
+	
+	
+	public PhoneticLastName(String value) {
+		super(PROPERTY_NAME);
+		
+		phoneticFirstName = value;
+	}
+	
+
+	@Override
+	public String getValue() {
+		return phoneticFirstName;
+	}
+
+	@Override
+	public void validate() throws ValidationException {
+	}
+	
+	public static class Factory implements PropertyFactory<Property> {
+		@Override
+		public PhoneticLastName createProperty(List<Parameter> params, String value) {
+			return new PhoneticLastName(value);
+		}
+
+		@Override
+		public PhoneticLastName createProperty(Group group, List<Parameter> params, String value) {
+			return new PhoneticLastName(value);
+		}
+	}
+}

src/at/bitfire/davdroid/ical4j/PhoneticMiddleName.java

@@ -0,0 +1,46 @@
+package at.bitfire.davdroid.ical4j;
+
+import java.util.List;
+
+import net.fortuna.ical4j.model.ValidationException;
+import net.fortuna.ical4j.vcard.Group;
+import net.fortuna.ical4j.vcard.Parameter;
+import net.fortuna.ical4j.vcard.Property;
+import net.fortuna.ical4j.vcard.PropertyFactory;
+
+public class PhoneticMiddleName extends Property {
+	private static final long serialVersionUID = 1310410178765057503L;
+
+	public static final String PROPERTY_NAME = "PHONETIC-MIDDLE-NAME";
+	
+	protected String phoneticFirstName;
+	
+	
+	public PhoneticMiddleName(String value) {
+		super(PROPERTY_NAME);
+		
+		phoneticFirstName = value;
+	}
+	
+
+	@Override
+	public String getValue() {
+		return phoneticFirstName;
+	}
+
+	@Override
+	public void validate() throws ValidationException {
+	}
+	
+	public static class Factory implements PropertyFactory<Property> {
+		@Override
+		public PhoneticMiddleName createProperty(List<Parameter> params, String value) {
+			return new PhoneticMiddleName(value);
+		}
+
+		@Override
+		public PhoneticMiddleName createProperty(Group group, List<Parameter> params, String value) {
+			return new PhoneticMiddleName(value);
+		}
+	}
+}

src/at/bitfire/davdroid/resource/CalDavCalendar.java

@@ -31,7 +31,7 @@ public class CalDavCalendar extends RemoteCollection<Event> {
 	}
 	
 	
-	public CalDavCalendar(String baseURL, String user, String password, boolean preemptiveAuth) throws IOException, URISyntaxException {
+	public CalDavCalendar(String baseURL, String user, String password, boolean preemptiveAuth) throws URISyntaxException {
 		super(baseURL, user, password, preemptiveAuth);
 	}
 }

src/at/bitfire/davdroid/resource/CardDavAddressBook.java

@@ -31,7 +31,7 @@ public class CardDavAddressBook extends RemoteCollection<Contact> {
 	}
 	
 
-	public CardDavAddressBook(String baseURL, String user, String password, boolean preemptiveAuth) throws IOException, URISyntaxException {
+	public CardDavAddressBook(String baseURL, String user, String password, boolean preemptiveAuth) throws URISyntaxException {
 		super(baseURL, user, password, preemptiveAuth);
 	}
 }

src/at/bitfire/davdroid/resource/Contact.java

@@ -51,6 +51,9 @@ import org.apache.commons.lang.StringUtils;
 
 import android.util.Base64;
 import android.util.Log;
+import at.bitfire.davdroid.ical4j.PhoneticFirstName;
+import at.bitfire.davdroid.ical4j.PhoneticLastName;
+import at.bitfire.davdroid.ical4j.PhoneticMiddleName;
 import at.bitfire.davdroid.ical4j.Starred;
 
 @ToString(callSuper = true)
@@ -61,6 +64,7 @@ public class Contact extends Resource {
 	
 	@Getter @Setter private String displayName;
 	@Getter @Setter private String prefix, givenName, middleName, familyName, suffix;
+	@Getter @Setter private String phoneticGivenName, phoneticMiddleName, phoneticFamilyName;
 	@Getter @Setter private String[] nickNames;
 
 	@Getter @Setter private byte[] photo;
@@ -107,17 +111,30 @@ public class Contact extends Resource {
 	@Override
 	public void parseEntity(InputStream is) throws IOException, ParserException {
 		PropertyFactoryRegistry propertyFactoryRegistry = new PropertyFactoryRegistry();
+
+		// add support for X-DAVDROID-STARRED
 		propertyFactoryRegistry.register("X-" + Starred.PROPERTY_NAME, new Starred.Factory());
 		
+		// add support for phonetic names
+		propertyFactoryRegistry.register("X-" + PhoneticFirstName.PROPERTY_NAME, new PhoneticFirstName.Factory());
+		propertyFactoryRegistry.register("X-" + PhoneticMiddleName.PROPERTY_NAME, new PhoneticMiddleName.Factory());
+		propertyFactoryRegistry.register("X-" + PhoneticLastName.PROPERTY_NAME, new PhoneticLastName.Factory());
+
 		VCardBuilder builder = new VCardBuilder(
 				new InputStreamReader(is),
 				new GroupRegistry(),
 				propertyFactoryRegistry,
 				new ParameterFactoryRegistry()
 		);
-		VCard vcard = builder.build();
+		
+		VCard vcard;
+		try {
+			vcard = builder.build();
 			if (vcard == null)
 				return;
+		} catch(Exception ex) {
+			throw new ParserException("VCard parser crashed", -1);
+		}
 		
 		Uid uid = (Uid)vcard.getProperty(Id.UID);
 		if (uid != null)
@@ -137,6 +154,7 @@ public class Contact extends Resource {
 		if (nickname != null)
 			nickNames = nickname.getNames();
 		
+		// structured name
 		N n = (N)vcard.getProperty(Id.N);
 		if (n != null) {
 			prefix = StringUtils.join(n.getPrefixes(), " ");
@@ -146,6 +164,17 @@ public class Contact extends Resource {
 			suffix = StringUtils.join(n.getSuffixes(), " ");
 		}
 		
+		// phonetic name
+		PhoneticFirstName phoneticFirstName = (PhoneticFirstName)vcard.getExtendedProperty(PhoneticFirstName.PROPERTY_NAME);
+		if (phoneticFirstName != null)
+			phoneticGivenName = phoneticFirstName.getValue();
+		PhoneticMiddleName phoneticMiddleName = (PhoneticMiddleName)vcard.getExtendedProperty(PhoneticMiddleName.PROPERTY_NAME);
+		if (phoneticMiddleName != null)
+			this.phoneticMiddleName = phoneticMiddleName.getValue();
+		PhoneticLastName phoneticLastName = (PhoneticLastName)vcard.getExtendedProperty(PhoneticLastName.PROPERTY_NAME);
+		if (phoneticLastName != null)
+			phoneticFamilyName = phoneticLastName.getValue();
+		
 		for (Property p : vcard.getProperties(Id.EMAIL))
 			emails.add((Email)p);
 		
@@ -228,6 +257,13 @@ public class Contact extends Resource {
 			properties.add(new N(familyName, givenName, StringUtils.split(middleName),
 					StringUtils.split(prefix), StringUtils.split(suffix)));
 		
+		if (phoneticGivenName != null)
+			properties.add(new PhoneticFirstName(phoneticGivenName));
+		if (phoneticMiddleName != null)
+			properties.add(new PhoneticMiddleName(phoneticMiddleName));
+		if (phoneticFamilyName != null)
+			properties.add(new PhoneticLastName(phoneticFamilyName));
+		
 		for (Email email : emails)
 			properties.add(email);
 		

src/at/bitfire/davdroid/resource/LocalAddressBook.java

@@ -125,8 +125,9 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 		
 		// structured name
 		cursor = providerClient.query(dataURI(), new String[] {
-				StructuredName.DISPLAY_NAME, StructuredName.PREFIX, StructuredName.GIVEN_NAME,
+				/* 0 */ StructuredName.DISPLAY_NAME, StructuredName.PREFIX, StructuredName.GIVEN_NAME,
-				StructuredName.MIDDLE_NAME,	StructuredName.FAMILY_NAME, StructuredName.SUFFIX
+				/* 3 */ StructuredName.MIDDLE_NAME,	StructuredName.FAMILY_NAME, StructuredName.SUFFIX,
+				/* 6 */ StructuredName.PHONETIC_GIVEN_NAME, StructuredName.PHONETIC_MIDDLE_NAME, StructuredName.PHONETIC_FAMILY_NAME
 			}, StructuredName.RAW_CONTACT_ID + "=? AND " + Data.MIMETYPE + "=?",
 			new String[] { String.valueOf(res.getLocalID()), StructuredName.CONTENT_ITEM_TYPE }, null);
 		if (cursor.moveToNext()) {
@@ -137,6 +138,10 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 			c.setMiddleName(cursor.getString(3));
 			c.setFamilyName(cursor.getString(4));
 			c.setSuffix(cursor.getString(5));
+			
+			c.setPhoneticGivenName(cursor.getString(6));
+			c.setPhoneticMiddleName(cursor.getString(7));
+			c.setPhoneticFamilyName(cursor.getString(8));
 		}
 		
 		// nick names
@@ -347,7 +352,10 @@ public class LocalAddressBook extends LocalCollection<Contact> {
 			.withValue(StructuredName.GIVEN_NAME, contact.getGivenName())
 			.withValue(StructuredName.MIDDLE_NAME, contact.getMiddleName())
 			.withValue(StructuredName.FAMILY_NAME, contact.getFamilyName())
-			.withValue(StructuredName.SUFFIX, contact.getSuffix());
+			.withValue(StructuredName.SUFFIX, contact.getSuffix())
+			.withValue(StructuredName.PHONETIC_GIVEN_NAME, contact.getPhoneticGivenName())
+			.withValue(StructuredName.PHONETIC_MIDDLE_NAME, contact.getPhoneticMiddleName())
+			.withValue(StructuredName.PHONETIC_FAMILY_NAME, contact.getPhoneticFamilyName());
 	}
 	
 	protected Builder buildNickName(Builder builder, String nickName) {

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

@@ -11,7 +11,6 @@ import java.net.URISyntaxException;
 import java.text.ParseException;
 import java.util.LinkedList;
 import java.util.List;
-
 import lombok.Getter;
 import net.fortuna.ical4j.model.Parameter;
 import net.fortuna.ical4j.model.ParameterList;
@@ -26,11 +25,10 @@ import net.fortuna.ical4j.model.property.Organizer;
 import net.fortuna.ical4j.model.property.RDate;
 import net.fortuna.ical4j.model.property.RRule;
 import net.fortuna.ical4j.model.property.Status;
-
 import org.apache.commons.lang.StringUtils;
-
 import android.accounts.Account;
 import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
 import android.content.ContentProviderClient;
 import android.content.ContentProviderOperation;
 import android.content.ContentProviderOperation.Builder;
@@ -40,6 +38,7 @@ import android.content.ContentValues;
 import android.database.Cursor;
 import android.database.DatabaseUtils;
 import android.net.Uri;
+import android.os.Build;
 import android.os.RemoteException;
 import android.provider.CalendarContract;
 import android.provider.CalendarContract.Attendees;
@@ -75,9 +74,9 @@ public class LocalCalendar extends LocalCollection<Event> {
 	protected String entryColumnDirty()			{ return Events.DIRTY; }
 	protected String entryColumnDeleted()		{ return Events.DELETED; }
 	
-	@SuppressLint("InlinedApi")
+	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 	protected String entryColumnUID() {
-		return (android.os.Build.VERSION.SDK_INT >= 17) ?
+		return (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) ?
 			Events.UID_2445 : Events.SYNC_DATA2;
 	}
 

src/at/bitfire/davdroid/resource/RemoteCollection.java

@@ -19,20 +19,24 @@ import net.fortuna.ical4j.model.ValidationException;
 
 import org.apache.http.HttpException;
 
+import android.util.Log;
 import at.bitfire.davdroid.webdav.HttpPropfind;
+import at.bitfire.davdroid.webdav.InvalidDavResponseException;
 import at.bitfire.davdroid.webdav.WebDavCollection;
 import at.bitfire.davdroid.webdav.WebDavCollection.MultigetType;
 import at.bitfire.davdroid.webdav.WebDavResource;
 import at.bitfire.davdroid.webdav.WebDavResource.PutMode;
 
 public abstract class RemoteCollection<ResourceType extends Resource> {
+	private static final String TAG = "davdroid.RemoteCollection";
+	
 	@Getter WebDavCollection collection;
 
 	abstract protected String memberContentType();
 	abstract protected MultigetType multiGetType();
 	abstract protected ResourceType newResourceSkeleton(String name, String ETag);
 	
-	public RemoteCollection(String baseURL, String user, String password, boolean preemptiveAuth) throws IOException, URISyntaxException {
+	public RemoteCollection(String baseURL, String user, String password, boolean preemptiveAuth) throws URISyntaxException {
 		collection = new WebDavCollection(new URI(baseURL), user, password, preemptiveAuth);
 	}
 
@@ -43,13 +47,13 @@ public abstract class RemoteCollection<ResourceType extends Resource> {
 		try {
 			if (collection.getCTag() == null && collection.getMembers() == null)	// not already fetched
 				collection.propfind(HttpPropfind.Mode.COLLECTION_CTAG);
-		} catch (IncapableResourceException e) {
+		} catch (InvalidDavResponseException e) {
 			return null;
 		}
 		return collection.getCTag();
 	}
 	
-	public Resource[] getMemberETags() throws IOException, IncapableResourceException, HttpException {
+	public Resource[] getMemberETags() throws IOException, InvalidDavResponseException, HttpException {
 		collection.propfind(HttpPropfind.Mode.MEMBERS_ETAG);
 			
 		List<ResourceType> resources = new LinkedList<ResourceType>();
@@ -59,7 +63,7 @@ public abstract class RemoteCollection<ResourceType extends Resource> {
 	}
 	
 	@SuppressWarnings("unchecked")
-	public Resource[] multiGet(ResourceType[] resources) throws IOException, IncapableResourceException, HttpException, ParserException {
+	public Resource[] multiGet(ResourceType[] resources) throws IOException, InvalidDavResponseException, HttpException {
 		try {
 			if (resources.length == 1) {
 				Resource resource = get(resources[0]);
@@ -75,19 +79,25 @@ public abstract class RemoteCollection<ResourceType extends Resource> {
 			LinkedList<ResourceType> foundResources = new LinkedList<ResourceType>();
 			for (WebDavResource member : collection.getMembers()) {
 				ResourceType resource = newResourceSkeleton(member.getName(), member.getETag());
+				try {
 					resource.parseEntity(member.getContent());
 					foundResources.add(resource);
+				} catch (ParserException ex) {
+					Log.e(TAG, "Ignoring unparseable entity in multi-response: " + ex.toString(), ex);
+				}
 			}
 			return foundResources.toArray(new Resource[0]);
-		} catch(ValidationException ex) {
+		} catch (ParserException ex) {
-			return null;
+			Log.w(TAG, "Couldn't parse single multi-get entity", ex);
 		}
+		
+		return new Resource[0];
 	}
 	
 	
 	/* internal member operations */
 
-	public ResourceType get(ResourceType resource) throws IOException, HttpException, ParserException, ValidationException {
+	public ResourceType get(ResourceType resource) throws IOException, HttpException, ParserException {
 		WebDavResource member = new WebDavResource(collection, resource.getName());
 		member.get();
 		resource.parseEntity(member.getContent());

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

@@ -10,11 +10,14 @@ package at.bitfire.davdroid.syncadapter;
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.util.HashMap;
+import java.util.Map;
 
 import lombok.Synchronized;
 import net.fortuna.ical4j.data.ParserException;
 
 import org.apache.http.HttpException;
+import org.apache.http.auth.AuthenticationException;
 
 import android.accounts.Account;
 import android.accounts.AccountManager;
@@ -34,6 +37,7 @@ import at.bitfire.davdroid.Constants;
 import at.bitfire.davdroid.resource.CalDavCalendar;
 import at.bitfire.davdroid.resource.IncapableResourceException;
 import at.bitfire.davdroid.resource.LocalCalendar;
+import at.bitfire.davdroid.resource.LocalCollection;
 import at.bitfire.davdroid.resource.RemoteCollection;
 import at.bitfire.davdroid.webdav.WebDavResource;
 
@@ -51,58 +55,35 @@ public class CalendarsSyncAdapterService extends Service {
 		return syncAdapter.getSyncAdapterBinder(); 
 	}
 
-	private static class SyncAdapter extends AbstractThreadedSyncAdapter {
+	private static class SyncAdapter extends DavSyncAdapter {
 		private final static String TAG = "davdroid.CalendarsSyncAdapter";
-		private AccountManager accountManager;
 		
 		public SyncAdapter(Context context) {
-			super(context, true);
+			super(context);
-			accountManager = AccountManager.get(context);
 		}
 		
 		@Override
-		public void onPerformSync(Account account, Bundle extras, String authority, ContentProviderClient provider,
+		protected Map<LocalCollection, RemoteCollection> getSyncPairs(Account account, ContentProviderClient provider) {
-				SyncResult syncResult) {
-			Log.i(TAG, "Performing sync for authority " + authority);
-			
-			// set class loader for iCal4j ResourceLoader
-			Thread.currentThread().setContextClassLoader(getContext().getClassLoader());
-			
 			try {
-				SyncManager syncManager = new SyncManager(account, accountManager);
+				Map<LocalCollection, RemoteCollection> map = new HashMap<LocalCollection, RemoteCollection>();
 				
-				LocalCalendar[] calendars = LocalCalendar.findAll(account, provider);
+				for (LocalCalendar calendar : LocalCalendar.findAll(account, provider)) {
-				for (LocalCalendar calendar : calendars) {
 					URI uri = new URI(accountManager.getUserData(account, Constants.ACCOUNT_KEY_BASE_URL)).resolve(calendar.getPath());
 					RemoteCollection dav = new CalDavCalendar(uri.toString(),
 						accountManager.getUserData(account, Constants.ACCOUNT_KEY_USERNAME),
 						accountManager.getPassword(account),
 						Boolean.parseBoolean(accountManager.getUserData(account, Constants.ACCOUNT_KEY_AUTH_PREEMPTIVE)));
-					syncManager.synchronize(calendar, dav, extras.containsKey(ContentResolver.SYNC_EXTRAS_MANUAL), syncResult);
+					
+					map.put(calendar, dav);
+				}
+				return map;
+			} catch (RemoteException ex) {
+				Log.e(TAG, "Couldn't find local calendars", ex);
+			} catch (URISyntaxException ex) {
+				Log.e(TAG, "Couldn't build calendar URI", ex);
 			}
 			
-			} catch (HttpException e) {
+			return null;
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (ParserException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (RemoteException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.getLocalizedMessage());
-			} catch (OperationApplicationException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.getLocalizedMessage());
-			} catch (IOException e) {
-				syncResult.stats.numIoExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (IncapableResourceException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (URISyntaxException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			}
 		}
 	}
 }

src/at/bitfire/davdroid/syncadapter/ContactsSyncAdapterService.java

@@ -10,7 +10,11 @@ package at.bitfire.davdroid.syncadapter;
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
 
+import lombok.NonNull;
 import lombok.Synchronized;
 import net.fortuna.ical4j.data.ParserException;
 
@@ -38,12 +42,12 @@ import at.bitfire.davdroid.resource.LocalCollection;
 import at.bitfire.davdroid.resource.RemoteCollection;
 
 public class ContactsSyncAdapterService extends Service {
-	private static SyncAdapter syncAdapter;
+	private static ContactsSyncAdapter syncAdapter;
 
 	@Override @Synchronized
 	public void onCreate() {
 		if (syncAdapter == null)
-			syncAdapter = new SyncAdapter(getApplicationContext());
+			syncAdapter = new ContactsSyncAdapter(getApplicationContext());
 	}
 
 	@Override
@@ -51,59 +55,38 @@ public class ContactsSyncAdapterService extends Service {
 		return syncAdapter.getSyncAdapterBinder();
 	}
 
-	private static class SyncAdapter extends AbstractThreadedSyncAdapter {
+	private static class ContactsSyncAdapter extends DavSyncAdapter {
 		private final static String TAG = "davdroid.ContactsSyncAdapter";
-		private AccountManager accountManager;
 
-		public SyncAdapter(Context context) {
+		public ContactsSyncAdapter(Context context) {
-			super(context, true);
+			super(context);
-			accountManager = AccountManager.get(context);
 		}
 
 		@Override
-		public void onPerformSync(Account account, Bundle extras, String authority, ContentProviderClient provider,	SyncResult syncResult) {
+		protected Map<LocalCollection, RemoteCollection> getSyncPairs(Account account, ContentProviderClient provider) {
-			Log.i(TAG, "Performing sync for authority " + authority);
-			
 			String addressBookPath = accountManager.getUserData(account, Constants.ACCOUNT_KEY_ADDRESSBOOK_PATH);
 			if (addressBookPath == null)
-				return;
+				return null;
 			
 			try {
-				URI uri = new URI(accountManager.getUserData(account, Constants.ACCOUNT_KEY_BASE_URL)).resolve(addressBookPath);
+				LocalCollection database = new LocalAddressBook(account, provider, accountManager);
 				
+				URI uri = new URI(accountManager.getUserData(account, Constants.ACCOUNT_KEY_BASE_URL)).resolve(addressBookPath);
 				RemoteCollection dav = new CardDavAddressBook(
 					uri.toString(),
 					accountManager.getUserData(account, Constants.ACCOUNT_KEY_USERNAME),
 					accountManager.getPassword(account),
 					Boolean.parseBoolean(accountManager.getUserData(account, Constants.ACCOUNT_KEY_AUTH_PREEMPTIVE)));
 				
-				LocalCollection database = new LocalAddressBook(account, provider, accountManager);
+				Map<LocalCollection, RemoteCollection> map = new HashMap<LocalCollection, RemoteCollection>();
+				map.put(database, dav);
 				
-				SyncManager syncManager = new SyncManager(account, accountManager);
+				return map;
-				syncManager.synchronize(database, dav, extras.containsKey(ContentResolver.SYNC_EXTRAS_MANUAL), syncResult);
+			} catch (URISyntaxException ex) {
-				
+				Log.e(TAG, "Couldn't build address book URI", ex);
-			} catch (IOException e) {
-				syncResult.stats.numIoExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (ParserException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (HttpException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			} catch (IncapableResourceException e) {
-				syncResult.stats.numParseExceptions++;
-				Log.e(TAG, e.toString());
-			} catch(RemoteException e) {
-				syncResult.databaseError = true;
-				Log.e(TAG, e.toString());
-			} catch(OperationApplicationException e) {
-				syncResult.databaseError = true;
-				Log.e(TAG, e.toString());
-			} catch (URISyntaxException e) {
-				syncResult.stats.numIoExceptions++;
-				Log.e(TAG, e.toString());
 			}
+			
+			return null;
 		}
 	}
 }

src/at/bitfire/davdroid/syncadapter/DavSyncAdapter.java

@@ -0,0 +1,78 @@
+package at.bitfire.davdroid.syncadapter;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.util.Map;
+
+import org.apache.http.HttpException;
+import org.apache.http.auth.AuthenticationException;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.content.AbstractThreadedSyncAdapter;
+import android.content.ContentProviderClient;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.OperationApplicationException;
+import android.content.SyncResult;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.util.Log;
+import at.bitfire.davdroid.resource.IncapableResourceException;
+import at.bitfire.davdroid.resource.LocalCollection;
+import at.bitfire.davdroid.resource.RemoteCollection;
+import at.bitfire.davdroid.webdav.InvalidDavResponseException;
+
+public abstract class DavSyncAdapter extends AbstractThreadedSyncAdapter {
+	private final static String TAG = "davdroid.DavSyncAdapter";
+	
+	protected AccountManager accountManager;
+	
+
+	public DavSyncAdapter(Context context) {
+		super(context, true);
+		accountManager = AccountManager.get(context);
+	}
+	
+	
+	protected abstract Map<LocalCollection, RemoteCollection> getSyncPairs(Account account, ContentProviderClient provider);
+	
+
+	@Override
+	public void onPerformSync(Account account, Bundle extras, String authority,	ContentProviderClient provider, SyncResult syncResult) {
+		Log.i(TAG, "Performing sync for authority " + authority);
+		
+		// set class loader for iCal4j ResourceLoader
+		Thread.currentThread().setContextClassLoader(getContext().getClassLoader());
+		
+		SyncManager syncManager = new SyncManager(account, accountManager);
+		
+		Map<LocalCollection, RemoteCollection> syncCollections = getSyncPairs(account, provider);
+		if (syncCollections == null)
+			Log.i(TAG, "Nothing to synchronize");
+		else
+			try {
+				for (Map.Entry<LocalCollection, RemoteCollection> entry : syncCollections.entrySet())
+					syncManager.synchronize(entry.getKey(), entry.getValue(), extras.containsKey(ContentResolver.SYNC_EXTRAS_MANUAL), syncResult);
+				
+			} catch (AuthenticationException ex) {
+				syncResult.stats.numAuthExceptions++;
+				Log.e(TAG, "HTTP authorization error", ex);
+			} catch (InvalidDavResponseException ex) {
+				syncResult.stats.numParseExceptions++;
+				Log.e(TAG, "Invalid DAV response", ex);
+			} catch (HttpException ex) {
+				syncResult.stats.numIoExceptions++;
+				Log.e(TAG, "HTTP error", ex);
+			} catch (OperationApplicationException ex) {
+				syncResult.databaseError = true;
+				Log.e(TAG, "Content provider operation error", ex);
+			} catch (RemoteException ex) {
+				syncResult.databaseError = true;
+				Log.e(TAG, "Remote process (content provider?) died", ex);
+			} catch (IOException ex) {
+				syncResult.stats.numIoExceptions++;
+				Log.e(TAG, "I/O error", ex);
+			}
+	}
+}

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

@@ -40,7 +40,7 @@ public class SyncManager {
 		this.accountManager = accountManager;
 	}
 
-	public void synchronize(LocalCollection local, RemoteCollection dav, boolean manualSync, SyncResult syncResult) throws RemoteException, OperationApplicationException, IOException, IncapableResourceException, HttpException, ParserException {
+	public void synchronize(LocalCollection local, RemoteCollection dav, boolean manualSync, SyncResult syncResult) throws RemoteException, OperationApplicationException, IOException, HttpException {
 		boolean fetchCollection = false;
 		
 		// PHASE 1: UPLOAD LOCALLY-CHANGED RESOURCES
@@ -139,8 +139,8 @@ public class SyncManager {
 				Log.i(TAG, "Adding " + res.getName());
 				try {
 					local.add(res);
-				} catch (ValidationException e) {
+				} catch (ValidationException ex) {
-					Log.e(TAG, "Invalid resource: " + res.getName());
+					Log.w(TAG, "Ignoring invalid remote resource: " + res.getName(), ex);
 				}
 				syncResult.stats.numInserts++;
 			}
@@ -151,8 +151,8 @@ public class SyncManager {
 			for (Resource res : dav.multiGet(resourcesToUpdate.toArray(new Resource[0]))) {
 				try {
 					local.updateByRemoteName(res);
-				} catch (ValidationException e) {
+				} catch (ValidationException ex) {
-					Log.e(TAG, "Invalid resource: " + res.getName());
+					Log.e(TAG, "Ignoring invalid remote resource: " + res.getName(), ex);
 				}
 				Log.i(TAG, "Updating " + res.getName());
 				syncResult.stats.numInserts++;

src/at/bitfire/davdroid/webdav/InvalidDavResponseException.java

@@ -0,0 +1,11 @@
+package at.bitfire.davdroid.webdav;
+
+import org.apache.http.HttpException;
+
+public class InvalidDavResponseException extends HttpException {
+	private static final long serialVersionUID = -2118919144443165706L;
+	
+	public InvalidDavResponseException() {
+		super("Invalid DAV response");
+	}
+}

src/at/bitfire/davdroid/webdav/WebDavCollection.java

@@ -44,7 +44,7 @@ public class WebDavCollection extends WebDavResource {
 	@Getter protected List<WebDavResource> members = new LinkedList<WebDavResource>();
 
 	
-	public WebDavCollection(URI baseURL, String username, String password, boolean preemptiveAuth) throws IOException {
+	public WebDavCollection(URI baseURL, String username, String password, boolean preemptiveAuth) {
 		super(baseURL, username, password, preemptiveAuth);
 	}
 	
@@ -60,7 +60,7 @@ public class WebDavCollection extends WebDavResource {
 	/* collection operations */
 
 
-	public boolean propfind(HttpPropfind.Mode mode) throws IOException, IncapableResourceException, HttpException {
+	public boolean propfind(HttpPropfind.Mode mode) throws IOException, InvalidDavResponseException, HttpException {
 		HttpPropfind propfind = new HttpPropfind(location, mode);
 		HttpResponse response = client.execute(propfind);
 		checkResponse(response);
@@ -74,9 +74,9 @@ public class WebDavCollection extends WebDavResource {
 				multistatus = serializer.read(DavMultistatus.class, is, false);
 				
 				Log.d(TAG, "Received multistatus response: " + baos.toString("UTF-8"));
-			} catch (Exception e) {
+			} catch (Exception ex) {
-				Log.w(TAG, e);
+				Log.w(TAG, "Invalid PROPFIND XML response", ex);
-				throw new IncapableResourceException();
+				throw new InvalidDavResponseException();
 			}
 			processMultiStatus(multistatus);
 			return true;
@@ -85,7 +85,7 @@ public class WebDavCollection extends WebDavResource {
 			return false;
 	}
 	
-	public boolean multiGet(String[] names, MultigetType type) throws IOException, IncapableResourceException, HttpException {
+	public boolean multiGet(String[] names, MultigetType type) throws IOException, InvalidDavResponseException, HttpException {
 		DavMultiget multiget = (type == MultigetType.ADDRESS_BOOK) ? new DavAddressbookMultiget() : new DavCalendarMultiget(); 
 			
 		multiget.prop = new DavProp();
@@ -128,7 +128,7 @@ public class WebDavCollection extends WebDavResource {
 			processMultiStatus(multistatus);
 			
 		} else
-			throw new IncapableResourceException();
+			throw new InvalidDavResponseException();
 		return true;
 	}
 	

src/at/bitfire/davdroid/webdav/WebDavResource.java

@@ -64,7 +64,7 @@ public class WebDavResource {
 	protected DefaultHttpClient client;
 	
 	
-	public WebDavResource(URI baseURL, String username, String password, boolean preemptive) throws IOException {
+	public WebDavResource(URI baseURL, String username, String password, boolean preemptive) {
 		location = baseURL.normalize();
 		
 		client = new DefaultHttpClient();