Add server type column to caldav accounts

app/src/androidTest/java/org/tasks/caldav/CaldavTest.kt

@@ -34,6 +34,7 @@ abstract class CaldavTest : InjectingTestCase() {
 
         preferences.setBoolean(R.string.p_debug_pro, true)
         server.start()
+        headers.clear()
     }
 
     @After
@@ -45,14 +46,16 @@ abstract class CaldavTest : InjectingTestCase() {
         assertFalse(caldavDao.getAccountByUuid(account.uuid!!)!!.hasError)
     }
 
+    val headers = HashMap<String, String>()
+
     protected fun enqueue(vararg responses: String) {
         responses.forEach {
             server.enqueue(
                 MockResponse()
                     .setResponseCode(207)
                     .setHeader("Content-Type", "text/xml; charset=\"utf-8\"")
-                    .setBody(it)
-            )
+                    .apply { this@CaldavTest.headers.forEach { (k, v) -> setHeader(k, v) } }
+                    .setBody(it))
         }
         server.enqueue(MockResponse().setResponseCode(500))
     }

app/src/androidTest/java/org/tasks/caldav/ServerDetectionTest.kt

@@ -0,0 +1,99 @@
+package org.tasks.caldav
+
+import com.todoroo.astrid.helper.UUIDHelper
+import dagger.hilt.android.testing.HiltAndroidTest
+import dagger.hilt.android.testing.UninstallModules
+import kotlinx.coroutines.runBlocking
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.tasks.data.CaldavAccount
+import org.tasks.data.CaldavAccount.Companion.SERVER_OPEN_XCHANGE
+import org.tasks.data.CaldavAccount.Companion.SERVER_OWNCLOUD
+import org.tasks.data.CaldavAccount.Companion.SERVER_SABREDAV
+import org.tasks.data.CaldavAccount.Companion.SERVER_TASKS
+import org.tasks.data.CaldavAccount.Companion.SERVER_UNKNOWN
+import org.tasks.data.CaldavAccount.Companion.TYPE_CALDAV
+import org.tasks.data.CaldavAccount.Companion.TYPE_TASKS
+import org.tasks.injection.ProductionModule
+
+@UninstallModules(ProductionModule::class)
+@HiltAndroidTest
+class ServerDetectionTest : CaldavTest() {
+
+    @Test
+    fun detectTasksServer() = runBlocking {
+        setup(
+            "DAV" to SABREDAV_COMPLIANCE,
+            "x-sabre-version" to "4.1.3",
+            accountType = TYPE_TASKS
+        )
+
+        sync()
+
+        assertEquals(SERVER_TASKS, loadAccount().serverType)
+    }
+
+    @Test
+    fun detectNextcloudServer() = runBlocking {
+        setup("DAV" to NEXTCLOUD_COMPLIANCE)
+
+        sync()
+
+        assertEquals(SERVER_OWNCLOUD, loadAccount().serverType)
+    }
+
+    @Test
+    fun detectSabredavServer() = runBlocking {
+        setup(
+            "DAV" to SABREDAV_COMPLIANCE,
+            "x-sabre-version" to "4.1.3"
+        )
+
+        sync()
+
+        assertEquals(SERVER_SABREDAV, loadAccount().serverType)
+    }
+
+    @Test
+    fun detectOpenXchangeServer() = runBlocking {
+        setup("server" to "Openexchange WebDAV")
+
+        sync()
+
+        assertEquals(SERVER_OPEN_XCHANGE, loadAccount().serverType)
+    }
+
+    @Test
+    fun unknownServer() = runBlocking {
+        setup()
+
+        sync()
+
+        assertEquals(SERVER_UNKNOWN, loadAccount().serverType)
+    }
+
+    private suspend fun loadAccount(): CaldavAccount =
+        caldavDao.getAccounts().apply { assertEquals(1, size) }.first()
+
+    private suspend fun setup(
+        vararg headers: Pair<String, String>,
+        accountType: Int = TYPE_CALDAV
+    ) {
+        account = CaldavAccount().apply {
+            uuid = UUIDHelper.newUUID()
+            username = "username"
+            password = encryption.encrypt("password")
+            url = server.url("/remote.php/dav/calendars/user1/").toString()
+            id = caldavDao.insert(this)
+            this.accountType = accountType
+        }
+        this.headers.putAll(headers)
+        enqueue(NO_CALENDARS)
+    }
+
+    companion object {
+        private const val NO_CALENDARS = """<?xml version="1.0"?><d:multistatus xmlns:d="DAV:"/>"""
+        private const val SABREDAV_COMPLIANCE = "1, 3, extended-mkcol, access-control, calendarserver-principal-property-search, calendar-access, calendar-proxy, calendarserver-subscribed, calendar-auto-schedule, calendar-availability, resource-sharing, calendarserver-sharing"
+        private const val NEXTCLOUD_COMPLIANCE = "1, 3, extended-mkcol, access-control, calendarserver-principal-property-search, calendar-access, calendar-proxy, calendar-auto-schedule, calendar-availability, nc-calendar-webcal-cache, calendarserver-subscribed, oc-resource-sharing, oc-calendar-publishing, calendarserver-sharing, nc-calendar-search, nc-enable-birthday-calendar"
+    }
+}

app/src/main/java/com/todoroo/astrid/dao/Database.kt

@@ -29,7 +29,7 @@ import org.tasks.notifications.NotificationDao
             GoogleTaskAccount::class,
             Principal::class,
         ],
-        version = 78)
+        version = 79)
 abstract class Database : RoomDatabase() {
     abstract fun notificationDao(): NotificationDao
     abstract val tagDataDao: TagDataDao

app/src/main/java/org/tasks/caldav/CaldavClient.kt

@@ -16,6 +16,7 @@ import com.todoroo.astrid.helper.UUIDHelper
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import okhttp3.HttpUrl
+import okhttp3.Interceptor
 import okhttp3.OkHttpClient
 import org.tasks.R
 import org.tasks.Strings.isNullOrEmpty
@@ -92,15 +93,18 @@ open class CaldavClient(
                 .findHomeset()
     }
 
-    suspend fun calendars(): List<Response> =
-            DavResource(httpClient, httpUrl!!)
-                    .propfind(1, *calendarProperties)
-                    .filter { (response, relation) ->
-                        relation == HrefRelation.MEMBER &&
-                                response[ResourceType::class.java]?.types?.contains(CALENDAR) == true &&
-                                response[SupportedCalendarComponentSet::class.java]?.supportsTasks == true
-                    }
-                    .map { (response, _) -> response }
+    suspend fun calendars(interceptor: Interceptor): List<Response> =
+        DavResource(
+            httpClient.newBuilder().addNetworkInterceptor(interceptor).build(),
+            httpUrl!!
+        )
+            .propfind(1, *calendarProperties)
+            .filter { (response, relation) ->
+                relation == HrefRelation.MEMBER &&
+                        response[ResourceType::class.java]?.types?.contains(CALENDAR) == true &&
+                        response[SupportedCalendarComponentSet::class.java]?.supportsTasks == true
+            }
+            .map { (response, _) -> response }
 
     @Throws(IOException::class, HttpException::class)
     suspend fun deleteCollection() = withContext(Dispatchers.IO) {

app/src/main/java/org/tasks/caldav/CaldavSynchronizer.kt

@@ -1,8 +1,12 @@
 package org.tasks.caldav
 
 import android.content.Context
-import at.bitfire.dav4jvm.*
+import at.bitfire.dav4jvm.DavCalendar
 import at.bitfire.dav4jvm.DavCalendar.Companion.MIME_ICALENDAR
+import at.bitfire.dav4jvm.DavResource
+import at.bitfire.dav4jvm.Property
+import at.bitfire.dav4jvm.PropertyRegistry
+import at.bitfire.dav4jvm.Response
 import at.bitfire.dav4jvm.Response.HrefRelation
 import at.bitfire.dav4jvm.exception.DavException
 import at.bitfire.dav4jvm.exception.HttpException
@@ -17,7 +21,9 @@ import com.todoroo.astrid.helper.UUIDHelper
 import com.todoroo.astrid.service.TaskDeleter
 import dagger.hilt.android.qualifiers.ApplicationContext
 import net.fortuna.ical4j.model.property.ProdId
+import okhttp3.Headers
 import okhttp3.HttpUrl
+import okhttp3.Interceptor
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import org.tasks.BuildConfig
@@ -34,6 +40,11 @@ import org.tasks.caldav.property.ShareAccess.Companion.READ_WRITE
 import org.tasks.caldav.property.ShareAccess.Companion.SHARED_OWNER
 import org.tasks.data.*
 import org.tasks.data.CaldavAccount.Companion.ERROR_UNAUTHORIZED
+import org.tasks.data.CaldavAccount.Companion.SERVER_OPEN_XCHANGE
+import org.tasks.data.CaldavAccount.Companion.SERVER_OWNCLOUD
+import org.tasks.data.CaldavAccount.Companion.SERVER_SABREDAV
+import org.tasks.data.CaldavAccount.Companion.SERVER_TASKS
+import org.tasks.data.CaldavAccount.Companion.SERVER_UNKNOWN
 import org.tasks.data.CaldavCalendar.Companion.ACCESS_OWNER
 import org.tasks.data.CaldavCalendar.Companion.ACCESS_READ_ONLY
 import org.tasks.data.CaldavCalendar.Companion.ACCESS_READ_WRITE
@@ -116,10 +127,20 @@ class CaldavSynchronizer @Inject constructor(
         }
     }
 
-    @Throws(IOException::class, DavException::class, KeyManagementException::class, NoSuchAlgorithmException::class)
     private suspend fun synchronize(account: CaldavAccount) {
         val caldavClient = provider.forAccount(account)
-        val resources = caldavClient.calendars()
+        var serverType = SERVER_UNKNOWN
+        val resources = caldavClient.calendars(object : Interceptor {
+            override fun intercept(chain: Interceptor.Chain): okhttp3.Response {
+                val response = chain.proceed(chain.request())
+                serverType = getServerType(account, response.headers)
+                return response
+            }
+        })
+        if (serverType != account.serverType) {
+            account.serverType = serverType
+            caldavDao.update(account)
+        }
         val urls = resources.map { it.href.toString() }.toHashSet()
         Timber.d("Found calendars: %s", urls)
         for (calendar in caldavDao.findDeletedCalendars(account.uuid!!, ArrayList(urls))) {
@@ -170,6 +191,14 @@ class CaldavSynchronizer @Inject constructor(
         setError(account, "")
     }
 
+    private fun getServerType(account: CaldavAccount, headers: Headers) = when {
+        account.isTasksOrg -> SERVER_TASKS
+        headers["DAV"]?.contains("oc-resource-sharing") == true -> SERVER_OWNCLOUD
+        headers["x-sabre-version"]?.isNotBlank() == true -> SERVER_SABREDAV
+        headers["server"] == "Openexchange WebDAV" -> SERVER_OPEN_XCHANGE
+        else -> SERVER_UNKNOWN
+    }
+
     private suspend fun setError(account: CaldavAccount, message: String?) {
         account.error = message
         caldavDao.update(account)
@@ -179,7 +208,6 @@ class CaldavSynchronizer @Inject constructor(
         }
     }
 
-    @Throws(DavException::class)
     private suspend fun sync(
             caldavCalendar: CaldavCalendar,
             resource: Response,
@@ -287,7 +315,6 @@ class CaldavSynchronizer @Inject constructor(
         return true
     }
 
-    @Throws(IOException::class)
     private suspend fun pushTask(task: Task, httpClient: OkHttpClient, httpUrl: HttpUrl) {
         Timber.d("pushing %s", task)
         val caldavTask = caldavDao.getTask(task.id) ?: return
@@ -354,10 +381,10 @@ class CaldavSynchronizer @Inject constructor(
                 }
         }
 
-        val Response.isOwncloudOwner: Boolean
+        private val Response.isOwncloudOwner: Boolean
             get() = this[OCOwnerPrincipal::class.java]?.owner?.let { isCurrentUser(it) } ?: false
 
-        fun Response.isCurrentUser(href: String) =
+        private fun Response.isCurrentUser(href: String) =
             this[CurrentUserPrincipal::class.java]?.href?.endsWith("$href/") == true
 
         val Response.principals: List<Principal>
@@ -399,15 +426,15 @@ class CaldavSynchronizer @Inject constructor(
                 return principals
             }
 
-        val Property.Name.toAccess: Int
-            get() = when(this) {
+        private val Property.Name.toAccess: Int
+            get() = when (this) {
                 SHARED_OWNER, OCAccess.SHARED_OWNER -> ACCESS_OWNER
                 READ_WRITE, OCAccess.READ_WRITE -> ACCESS_READ_WRITE
                 READ, OCAccess.READ -> ACCESS_READ_ONLY
                 else -> ACCESS_UNKNOWN
             }
 
-        val Property.Name.toStatus: Int
+        private val Property.Name.toStatus: Int
             get() = when (this) {
                 Sharee.INVITE_ACCEPTED, OCUser.INVITE_ACCEPTED -> INVITE_ACCEPTED
                 Sharee.INVITE_NORESPONSE, OCUser.INVITE_NORESPONSE -> INVITE_NO_RESPONSE

app/src/main/java/org/tasks/data/CaldavAccount.kt

@@ -64,11 +64,14 @@ class CaldavAccount : Parcelable {
     var encryptionKey: String? = null
 
     @ColumnInfo(name = "cda_account_type")
-    var accountType = 0
+    var accountType = TYPE_CALDAV
 
     @ColumnInfo(name = "cda_collapsed")
     var isCollapsed = false
 
+    @ColumnInfo(name = "cda_server_type")
+    var serverType = SERVER_UNKNOWN
+
     constructor()
 
     @Ignore
@@ -84,6 +87,7 @@ class CaldavAccount : Parcelable {
         accountType = source.readInt()
         encryptionKey = source.readString()
         isCollapsed = ParcelCompat.readBoolean(source)
+        serverType = source.readInt()
     }
 
     fun getPassword(encryption: KeyStoreEncryption): String {
@@ -143,12 +147,15 @@ class CaldavAccount : Parcelable {
             writeInt(accountType)
             writeString(encryptionKey)
             ParcelCompat.writeBoolean(this, isCollapsed)
+            writeInt(serverType)
         }
     }
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
-        if (other !is CaldavAccount) return false
+        if (javaClass != other?.javaClass) return false
+
+        other as CaldavAccount
 
         if (id != other.id) return false
         if (uuid != other.uuid) return false
@@ -161,6 +168,7 @@ class CaldavAccount : Parcelable {
         if (encryptionKey != other.encryptionKey) return false
         if (accountType != other.accountType) return false
         if (isCollapsed != other.isCollapsed) return false
+        if (serverType != other.serverType) return false
 
         return true
     }
@@ -177,11 +185,12 @@ class CaldavAccount : Parcelable {
         result = 31 * result + (encryptionKey?.hashCode() ?: 0)
         result = 31 * result + accountType
         result = 31 * result + isCollapsed.hashCode()
+        result = 31 * result + serverType
         return result
     }
 
     override fun toString(): String {
-        return "CaldavAccount(id=$id, uuid=$uuid, name=$name, url=$url, username=$username, password=$password, error=$error, isSuppressRepeatingTasks=$isSuppressRepeatingTasks, encryptionKey=$encryptionKey, accountType=$accountType, isCollapsed=$isCollapsed)"
+        return "CaldavAccount(id=$id, uuid=$uuid, name=$name, url=$url, username=$username, password=$password, error=$error, isSuppressRepeatingTasks=$isSuppressRepeatingTasks, encryptionKey=$encryptionKey, accountType=$accountType, isCollapsed=$isCollapsed, serverType=$serverType)"
     }
 
     fun isTasksSubscription(context: Context): Boolean {
@@ -230,6 +239,12 @@ class CaldavAccount : Parcelable {
         const val TYPE_TASKS = 4
         const val TYPE_ETEBASE = 5
 
+        const val SERVER_UNKNOWN = -1
+        const val SERVER_TASKS = 0
+        const val SERVER_OWNCLOUD = 1
+        const val SERVER_SABREDAV = 2
+        const val SERVER_OPEN_XCHANGE = 3
+
         const val ERROR_UNAUTHORIZED = "HTTP ${HttpURLConnection.HTTP_UNAUTHORIZED}"
         const val ERROR_PAYMENT_REQUIRED = "HTTP ${HttpURLConnection.HTTP_PAYMENT_REQUIRED}"
 

app/src/main/java/org/tasks/db/Migrations.kt

@@ -4,6 +4,7 @@ import android.database.sqlite.SQLiteException
 import androidx.room.migration.Migration
 import androidx.sqlite.db.SupportSQLiteDatabase
 import com.todoroo.astrid.api.FilterListItem.NO_ORDER
+import org.tasks.data.CaldavAccount.Companion.SERVER_UNKNOWN
 import timber.log.Timber
 
 object Migrations {
@@ -374,6 +375,14 @@ object Migrations {
         }
     }
 
+    private val MIGRATION_78_79: Migration = object : Migration(78, 79) {
+        override fun migrate(database: SupportSQLiteDatabase) {
+            database.execSQL(
+                "ALTER TABLE `caldav_accounts` ADD COLUMN `cda_server_type` INTEGER NOT NULL DEFAULT $SERVER_UNKNOWN"
+            )
+        }
+    }
+
     val MIGRATIONS = arrayOf(
             MIGRATION_35_36,
             MIGRATION_36_37,
@@ -409,6 +418,7 @@ object Migrations {
             MIGRATION_75_76,
             MIGRATION_76_77,
             MIGRATION_77_78,
+            MIGRATION_78_79,
     )
 
     private fun noop(from: Int, to: Int): Migration = object : Migration(from, to) {