make automatic login with session timeout on saml work

dav4android

@@ -1 +1 @@
-Subproject commit b20c44c63f45355599d4bfaf00042964b9e6cafa
+Subproject commit 1108048f1a2ff12103cdf6a95307a314d621c088

src/com/owncloud/android/lib/common/OwnCloudClient.java

@@ -46,6 +46,7 @@ import java.io.InputStream;
 import java.util.List;
 
 import at.bitfire.dav4android.exception.HttpException;
+import at.bitfire.dav4android.exception.RedirectException;
 import okhttp3.Cookie;
 import okhttp3.Headers;
 import okhttp3.HttpUrl;
@@ -131,16 +132,21 @@ public class OwnCloudClient extends HttpClient {
 
         boolean repeatWithFreshCredentials;
         int repeatCounter = 0;
-        int status;
+        int status = -1;
 
         do {
             try {
                 status = method.execute();
-            } catch (HttpException e) {
+                checkFirstRedirection(method);
-                if(e.getMessage().contains(Integer.toString(HttpConstants.HTTP_MOVED_TEMPORARILY))) {
+                if(mFollowRedirects) {
+                    status = followRedirection(method).getLastStatus();
+                }
+            } catch (RedirectException e) {
+                // redirect must be handled twice. Once for dav4droid and once okhttp redirect errors
+                status = e.getStatus();
+                mRedirectedLocation = e.getRedirectLocation();
+                if(mFollowRedirects) {
                     status = followRedirection(method).getLastStatus();
-                } else {
-                    throw e;
                 }
             }
 
@@ -153,6 +159,14 @@ public class OwnCloudClient extends HttpClient {
         return status;
     }
 
+    private void checkFirstRedirection(HttpBaseMethod method) {
+
+        final String location = method.getResponseHeader("location");
+        if(location != null && !location.isEmpty()) {
+            mRedirectedLocation = location;
+        }
+    }
+
     private int executeRedirectedHttpMethod (HttpBaseMethod method) throws Exception {
         boolean repeatWithFreshCredentials;
         int repeatCounter = 0;

src/com/owncloud/android/lib/common/http/methods/webdav/DavMethod.java

@@ -47,6 +47,7 @@ public abstract class DavMethod extends HttpBaseMethod {
                 mOkHttpClient,
                 httpUrl
         );
+        mDavResource.setFollowRedirects(false);
     }
 
     public DavResource getDavResource() {