Add a fragment to setup user info.

This is used to create a keypair and put it on the server if one doesn't
exist, and fetch it and save it locally if one does.

It's currently called from the account activity.

app/src/main/java/com/etesync/syncadapter/ui/AccountActivity.java

@@ -57,6 +57,7 @@ import com.etesync.syncadapter.model.CollectionInfo;
 import com.etesync.syncadapter.model.JournalEntity;
 import com.etesync.syncadapter.model.ServiceEntity;
 import com.etesync.syncadapter.resource.LocalCalendar;
+import com.etesync.syncadapter.ui.setup.SetupUserInfoFragment;
 import com.etesync.syncadapter.utils.HintManager;
 import com.etesync.syncadapter.utils.ShowcaseBuilder;
 
@@ -113,6 +114,10 @@ public class AccountActivity extends AppCompatActivity implements Toolbar.OnMenu
                     .playOn(tbCardDAV);
             HintManager.setHintSeen(this, HINT_VIEW_COLLECTION, true);
         }
+
+        if (!SetupUserInfoFragment.hasUserInfo(this, account)) {
+            SetupUserInfoFragment.newInstance(account).show(getSupportFragmentManager(), null);
+        }
     }
 
     @Override

app/src/main/java/com/etesync/syncadapter/ui/setup/SetupUserInfoFragment.java

@@ -0,0 +1,142 @@
+package com.etesync.syncadapter.ui.setup;
+
+import android.accounts.Account;
+import android.app.Dialog;
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.Fragment;
+import android.support.v7.app.AlertDialog;
+import android.widget.TextView;
+
+import com.etesync.syncadapter.AccountSettings;
+import com.etesync.syncadapter.App;
+import com.etesync.syncadapter.HttpClient;
+import com.etesync.syncadapter.InvalidAccountException;
+import com.etesync.syncadapter.R;
+import com.etesync.syncadapter.journalmanager.Crypto;
+import com.etesync.syncadapter.journalmanager.UserInfoManager;
+
+import lombok.RequiredArgsConstructor;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+
+import static com.etesync.syncadapter.Constants.KEY_ACCOUNT;
+
+public class SetupUserInfoFragment extends DialogFragment {
+    private Account account;
+    private AccountSettings settings;
+
+    public static SetupUserInfoFragment newInstance(Account account) {
+        SetupUserInfoFragment frag = new SetupUserInfoFragment();
+        Bundle args = new Bundle(1);
+        args.putParcelable(KEY_ACCOUNT, account);
+        frag.setArguments(args);
+        return frag;
+    }
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        ProgressDialog progress = new ProgressDialog(getActivity());
+        progress.setTitle(R.string.login_encryption_setup_title);
+        progress.setMessage(getString(R.string.login_encryption_setup));
+        progress.setIndeterminate(true);
+        progress.setCanceledOnTouchOutside(false);
+        setCancelable(false);
+        return progress;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        account = getArguments().getParcelable(KEY_ACCOUNT);
+
+        try {
+            settings = new AccountSettings(getContext(), account);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        new SetupUserInfo().execute(account);
+    }
+
+    public static boolean hasUserInfo(Context context, Account account) {
+        AccountSettings settings;
+        try {
+            settings = new AccountSettings(context, account);
+        } catch (InvalidAccountException e) {
+            e.printStackTrace();
+            return false;
+        }
+        return settings.getKeyPair() != null;
+    }
+
+    protected class SetupUserInfo extends AsyncTask<Account, Integer, SetupUserInfo.SetupUserInfoResult> {
+        ProgressDialog progressDialog;
+
+        @Override
+        protected void onPreExecute() {
+            progressDialog = (ProgressDialog) getDialog();
+        }
+
+        @Override
+        protected SetupUserInfo.SetupUserInfoResult doInBackground(Account... accounts) {
+            try {
+                OkHttpClient httpClient = HttpClient.create(getContext(), account);
+
+                Crypto.CryptoManager cryptoManager = new Crypto.CryptoManager(com.etesync.syncadapter.journalmanager.Constants.CURRENT_VERSION, settings.password(), "userInfo");
+                UserInfoManager userInfoManager = new UserInfoManager(httpClient, HttpUrl.get(settings.getUri()));
+                UserInfoManager.UserInfo userInfo = userInfoManager.get(cryptoManager, account.name);
+
+                if (userInfo == null) {
+                    App.log.info("Creating userInfo for " + account.name);
+                    userInfo = UserInfoManager.UserInfo.generate(cryptoManager, account.name);
+                    userInfoManager.create(userInfo);
+                } else {
+                    App.log.info("Fetched userInfo for " + account.name);
+                }
+
+                Crypto.AsymmetricKeyPair keyPair = new Crypto.AsymmetricKeyPair(userInfo.getContent(cryptoManager), userInfo.getPubkey());
+
+                return new SetupUserInfoResult(keyPair, null);
+            } catch (Exception e) {
+                e.printStackTrace();
+                return new SetupUserInfoResult(null, e);
+            }
+        }
+
+        @Override
+        protected void onPostExecute(SetupUserInfoResult result) {
+            if (result.exception == null) {
+                settings.setKeyPair(result.keyPair);
+            } else {
+                Dialog dialog = new AlertDialog.Builder(getActivity())
+                        .setTitle(R.string.login_encryption_error_title)
+                        .setIcon(R.drawable.ic_error_dark)
+                        .setMessage(result.exception.getLocalizedMessage())
+                        .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int which) {
+                                // dismiss
+                            }
+                        })
+                        .create();
+                dialog.show();
+            }
+
+            dismissAllowingStateLoss();
+        }
+
+        @RequiredArgsConstructor
+        class SetupUserInfoResult {
+            final Crypto.AsymmetricKeyPair keyPair;
+            final Exception exception;
+        }
+    }
+}

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

@@ -140,6 +140,10 @@
     <string name="login_encryption_setup_title">Setting up encryption</string>
     <string name="login_encryption_setup">Please wait, setting up encryption…</string>
 
+    <!-- SetupUserInfoFragment -->
+    <string name="login_encryption_error_title">Encryption Error</string>
+
+
     <!-- ImportFragment -->
     <string name="import_dialog_title">Import</string>
     <string name="import_dialog_failed_title">Import Failed</string>