If Im.PROTOCOL_CUSTOM is set but Im.CUSTOM_PROTOCOL is empty syncing fails

[spoorcc]

First of all, thanks for davdroid! Been using it happily for years now.

I used a suboptimal contact merger which apparently corrupted some contacts. It seems that for a contact the PROTOCOL_CUSTOM field is set but CUSTOM_PROTOCOL is empty.

Which results in IllegalStateException (see log below) in vcard4android AndroidContact.kt #L348

I understand that according to the [Protocol documentation] (https://developer.android.com/reference/android/provider/ContactsContract.CommonDataKinds.Im.html#PROTOCOL) the CUSTOM_PROTOCOL should contain the name of the custom protocol if PROTOCOL_CUSTOM is set, but it would be nice to just sync and log a warning similar to the IllegalArgumentException. Currently nothing is synced because of single corrupt contact.

• If I can provide anymore info, please let me know

**Debug log (without my personal info) **

--- BEGIN DEBUG INFO ---
SYNCHRONIZATION INFO
Synchronization phase: 0
Account name: Default (bla@bla.com ag)
Authority: com.android.contacts

EXCEPTION:
java.lang.IllegalStateException: row.getAsString(Im.CUSTOM_PROTOCOL) must not be null
	at at.bitfire.vcard4android.AndroidContact.populateIMPP(AndroidContact.kt:348)
	at at.bitfire.vcard4android.AndroidContact.getContact(AndroidContact.kt:144)
	at at.bitfire.davdroid.resource.LocalContact.dataHashCode$app_standardRelease(LocalContact.kt:155)
	at at.bitfire.davdroid.resource.LocalAddressBook.verifyDirty(LocalAddressBook.kt:193)
	at at.bitfire.davdroid.syncadapter.ContactsSyncManager.prepare(ContactsSyncManager.kt:104)
	at at.bitfire.davdroid.syncadapter.SyncManager.performSync(SyncManager.kt:107)
	at at.bitfire.davdroid.syncadapter.ContactsSyncAdapterService$ContactsSyncAdapter.sync(ContactsSyncAdapterService.kt:43)
	at at.bitfire.davdroid.syncadapter.SyncAdapterService$SyncAdapter.onPerformSync(SyncAdapterService.kt:47)
	at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:272)

SOFTWARE INFORMATION
DAVdroid version: 1.6.4-ose (158) Sat Jul 29 02:20:12 GMT+02:00 2017
Installed from: com.google.android.packageinstaller
JB Workaround installed: no

CONNECTIVITY (at the moment)
Active connection: WiFi, CONNECTED
System default proxy: none

CONFIGURATION
Power saving disabled: no
android.permission.READ_CONTACTS permission: granted
android.permission.WRITE_CONTACTS permission: granted
android.permission.READ_CALENDAR permission: granted
android.permission.WRITE_CALENDAR permission: granted
org.dmfs.permission.READ_TASKS permission: denied
org.dmfs.permission.WRITE_TASKS permission: denied
System-wide synchronization: automatically
Account: bla@hotmail.com 
  Address book sync. interval: 240 min
  Calendar     sync. interval: —
  OpenTasks    sync. interval: —
  WiFi only: false
  [CardDAV] Contact group method: GROUP_VCARDS
  [CalDAV] Time range (past days): 90
           Manage calendar colors: true
Account: bla@hotmail.com - caldav
  Address book sync. interval: —
  Calendar     sync. interval: 240 min
  OpenTasks    sync. interval: —
  WiFi only: false
  [CardDAV] Contact group method: GROUP_VCARDS
  [CalDAV] Time range (past days): 90
           Manage calendar colors: true
Address book account: Default ( ag)
  Main account: Account {name=, type=bitfire.at.davdroid}
  URL: 
  Sync automatically: true

SQLITE DUMP
android_metadata
	|  locale |
	|  nl_NL |
----------
settings
	|  setting | value |
	|  hint_OpenTasksNotInstalled | 0 |
----------
services
	|  _id | accountName | service | principal |
	|  1 |  | carddav | /use |
	|  2 |  - caldav | caldav  |
----------
sqlite_sequence
	|  name | seq |
	|  services | 2 |
	|  homesets | 4 |
	|  collections | 6 |
----------
homesets
	|  _id | serviceID | url |
	|  2 | 2  |
	|  4 |  |
----------
collections
	|  _id | serviceID | url | readOnly | displayName | description | color | timezone | supportsVEVENT | supportsVTODO | sync |
	|  2 | 2 |  | 0 |  Calendar | <null> | -12959076 | <null> | 1 | 1 | 1 |
	|  3 | 2  | 1 | @gmail.com | <null> | -10610867 | <null> | 1 | 1 | 1 |
	|  4 | 2  | 1 | @gmail.com | <null> | -1092591 | <null> | 1 | 1 | 1 |
	|  6 | 1  | 0 | Default | <null> | <null> | <null> | 0 | 0 | 1 |
----------

SYSTEM INFORMATION
Android version: 7.1.1 (ONEPLUS A5000_23_170803)
Device: OnePlus ONEPLUS A5000 (OnePlus5)

--- END DEBUG INFO ---

[rfc2822]

Thanks for the report. Did you already report it to the contact merger, too?

[spoorcc]

@rfc2822
next step

[rfc2822]

There’s no need to ignore such entries. IMPP without protocol should be coded as URI without scheme, e.g. just nickname. This is not a problem of creating the URI, but of AndroidContact.toURIScheme() not accepting null values.

Fixed with vcard4android/48c64fc8.

[spoorcc]

Thanks for the quick resolution, enjoy your , see your paypal ;).