// Copyright (C) 2008 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.client.account;
import com.google.gerrit.client.ErrorDialog;
import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.rpc.GerritCallback;
import com.google.gerrit.client.ui.FancyFlexTable;
import com.google.gerrit.client.ui.SmallHeading;
import com.google.gerrit.common.data.SshHostKey;
import com.google.gerrit.common.errors.InvalidSshKeyException;
import com.google.gerrit.reviewdb.AccountSshKey;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;
import com.google.gwtexpui.clippy.client.CopyableLabel;
import com.google.gwtexpui.globalkey.client.NpTextArea;
import com.google.gwtjsonrpc.client.RemoteJsonException;
import com.google.gwtjsonrpc.client.VoidResult;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
class SshPanel extends Composite {
private static boolean loadedApplet;
private static Element applet;
private static String appletErrorInvalidKey;
private static String appletErrorSecurity;
private SshKeyTable keys;
private Button showAddKeyBlock;
private Panel addKeyBlock;
private Button closeAddKeyBlock;
private Button clearNew;
private Button addNew;
private Button browse;
private Timer appletLoadTimer;
private NpTextArea addTxt;
private Button deleteKey;
private Panel serverKeys;
private int loadCount;
SshPanel() {
final FlowPanel body = new FlowPanel();
showAddKeyBlock = new Button(Util.C.buttonShowAddSshKey());
showAddKeyBlock.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
showAddKeyBlock(true);
}
});
keys = new SshKeyTable();
body.add(keys);
{
final FlowPanel fp = new FlowPanel();
deleteKey = new Button(Util.C.buttonDeleteSshKey());
deleteKey.setEnabled(false);
deleteKey.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
keys.deleteChecked();
}
});
fp.add(deleteKey);
fp.add(showAddKeyBlock);
body.add(fp);
}
addKeyBlock = new VerticalPanel();
addKeyBlock.setVisible(false);
addKeyBlock.setStyleName(Gerrit.RESOURCES.css().addSshKeyPanel());
addKeyBlock.add(new SmallHeading(Util.C.addSshKeyPanelHeader()));
addKeyBlock.add(new HTML(Util.C.addSshKeyHelp()));
addTxt = new NpTextArea();
addTxt.setVisibleLines(12);
addTxt.setCharacterWidth(80);
addTxt.setSpellCheck(false);
addKeyBlock.add(addTxt);
final HorizontalPanel buttons = new HorizontalPanel();
addKeyBlock.add(buttons);
clearNew = new Button(Util.C.buttonClearSshKeyInput());
clearNew.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
addTxt.setText("");
addTxt.setFocus(true);
}
});
buttons.add(clearNew);
browse = new Button(Util.C.buttonOpenSshKey());
browse.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
doBrowse();
}
});
browse.setVisible(!loadedApplet || applet != null);
buttons.add(browse);
addNew = new Button(Util.C.buttonAddSshKey());
addNew.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
doAddNew();
}
});
buttons.add(addNew);
closeAddKeyBlock = new Button(Util.C.buttonCloseAddSshKey());
closeAddKeyBlock.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
showAddKeyBlock(false);
}
});
buttons.add(closeAddKeyBlock);
buttons.setCellWidth(closeAddKeyBlock, "100%");
buttons.setCellHorizontalAlignment(closeAddKeyBlock,
HasHorizontalAlignment.ALIGN_RIGHT);
body.add(addKeyBlock);
serverKeys = new FlowPanel();
body.add(serverKeys);
initWidget(body);
}
void setKeyTableVisible(final boolean on) {
keys.setVisible(on);
deleteKey.setVisible(on);
closeAddKeyBlock.setVisible(on);
}
void doBrowse() {
browse.setEnabled(false);
if (!loadedApplet) {
applet = DOM.createElement("applet");
applet.setAttribute("code",
"com.google.gerrit.keyapplet.ReadPublicKey.class");
applet.setAttribute("archive", GWT.getModuleBaseURL()
+ AccountResources.I.keyapplet_jar().getText());
applet.setAttribute("mayscript", "true");
applet.setAttribute("width", "0");
applet.setAttribute("height", "0");
RootPanel.getBodyElement().appendChild(applet);
loadedApplet = true;
// We have to defer to allow the event loop time to setup that
// new applet tag we just created above, and actually load the
// applet into the runtime.
//
appletLoadTimer = new Timer() {
private int attempts;
@Override
public void run() {
if (isAppletRunning(applet)) {
appletLoadTimer = null;
cancel();
doBrowse();
} else if (30000 / 200 < attempts++) {
appletLoadTimer = null;
cancel();
noBrowse();
}
}
};
appletLoadTimer.scheduleRepeating(200);
return;
}
if (applet == null || !isAppletRunning(applet)) {
// If the applet element is null, the applet was determined
// to have failed to load, and we are dead. Hide the button.
//
noBrowse();
return;
}
String txt;
try {
txt = openPublicKey(applet);
} catch (RuntimeException re) {
// If this call fails, the applet is dead. It is most likely
// not loading due to Java support being disabled.
//
noBrowse();
return;
}
if (txt == null) {
txt = "";
}
browse.setEnabled(true);
if (appletErrorInvalidKey == null) {
appletErrorInvalidKey = getErrorInvalidKey(applet);
appletErrorSecurity = getErrorSecurity(applet);
}
if (appletErrorInvalidKey.equals(txt)) {
new ErrorDialog(Util.C.invalidSshKeyError()).center();
return;
}
if (appletErrorSecurity.equals(txt)) {
new ErrorDialog(Util.C.invalidSshKeyError()).center();
return;
}
addTxt.setText(txt);
addNew.setFocus(true);
}
private void noBrowse() {
if (applet != null) {
applet.getParentElement().removeChild(applet);
applet = null;
}
browse.setVisible(false);
new ErrorDialog(Util.C.sshJavaAppletNotAvailable()).center();
}
private static native boolean isAppletRunning(Element keyapp)
/*-{ return keyapp['openPublicKey'] ? true : false }-*/;
private static native String openPublicKey(Element keyapp)
/*-{ var r = keyapp.openPublicKey(); return r == null ? null : ''+r; }-*/;
private static native String getErrorInvalidKey(Element keyapp)
/*-{ return ''+keyapp.getErrorInvalidKey(); }-*/;
private static native String getErrorSecurity(Element keyapp)
/*-{ return ''+keyapp.getErrorSecurity(); }-*/;
void doAddNew() {
final String txt = addTxt.getText();
if (txt != null && txt.length() > 0) {
addNew.setEnabled(false);
Util.ACCOUNT_SEC.addSshKey(txt, new GerritCallback<AccountSshKey>() {
public void onSuccess(final AccountSshKey result) {
addNew.setEnabled(true);
addTxt.setText("");
keys.addOneKey(result);
if (!keys.isVisible()) {
showAddKeyBlock(false);
setKeyTableVisible(true);
keys.updateDeleteButton();
}
}
@Override
public void onFailure(final Throwable caught) {
addNew.setEnabled(true);
if (isInvalidSshKey(caught)) {
new ErrorDialog(Util.C.invalidSshKeyError()).center();
} else {
super.onFailure(caught);
}
}
private boolean isInvalidSshKey(final Throwable caught) {
if (caught instanceof InvalidSshKeyException) {
return true;
}
return caught instanceof RemoteJsonException
&& InvalidSshKeyException.MESSAGE.equals(caught.getMessage());
}
});
}
}
@Override
protected void onLoad() {
super.onLoad();
Util.ACCOUNT_SEC.mySshKeys(new GerritCallback<List<AccountSshKey>>() {
public void onSuccess(final List<AccountSshKey> result) {
keys.display(result);
if (result.isEmpty() && keys.isVisible()) {
showAddKeyBlock(true);
}
if (++loadCount == 2) {
display();
}
}
});
Gerrit.SYSTEM_SVC.daemonHostKeys(new GerritCallback<List<SshHostKey>>() {
public void onSuccess(final List<SshHostKey> result) {
serverKeys.clear();
for (final SshHostKey keyInfo : result) {
serverKeys.add(new SshHostKeyPanel(keyInfo));
}
if (++loadCount == 2) {
display();
}
}
});
}
void display() {
}
@Override
protected void onUnload() {
if (appletLoadTimer != null) {
appletLoadTimer.cancel();
appletLoadTimer = null;
}
super.onUnload();
}
private void showAddKeyBlock(final boolean show) {
showAddKeyBlock.setVisible(!show);
addKeyBlock.setVisible(show);
}
private class SshKeyTable extends FancyFlexTable<AccountSshKey> {
private ValueChangeHandler<Boolean> updateDeleteHandler;
SshKeyTable() {
table.setWidth("");
table.setText(0, 2, Util.C.sshKeyStatus());
table.setText(0, 3, Util.C.sshKeyAlgorithm());
table.setText(0, 4, Util.C.sshKeyKey());
table.setText(0, 5, Util.C.sshKeyComment());
final FlexCellFormatter fmt = table.getFlexCellFormatter();
fmt.addStyleName(0, 1, Gerrit.RESOURCES.css().iconHeader());
fmt.addStyleName(0, 2, Gerrit.RESOURCES.css().dataHeader());
fmt.addStyleName(0, 3, Gerrit.RESOURCES.css().dataHeader());
fmt.addStyleName(0, 4, Gerrit.RESOURCES.css().dataHeader());
fmt.addStyleName(0, 5, Gerrit.RESOURCES.css().dataHeader());
updateDeleteHandler = new ValueChangeHandler<Boolean>() {
@Override
public void onValueChange(ValueChangeEvent<Boolean> event) {
updateDeleteButton();
}
};
}
void deleteChecked() {
final HashSet<AccountSshKey.Id> ids = new HashSet<AccountSshKey.Id>();
for (int row = 1; row < table.getRowCount(); row++) {
final AccountSshKey k = getRowItem(row);
if (k != null && ((CheckBox) table.getWidget(row, 1)).getValue()) {
ids.add(k.getKey());
}
}
if (ids.isEmpty()) {
updateDeleteButton();
} else {
Util.ACCOUNT_SEC.deleteSshKeys(ids, new GerritCallback<VoidResult>() {
public void onSuccess(final VoidResult result) {
for (int row = 1; row < table.getRowCount();) {
final AccountSshKey k = getRowItem(row);
if (k != null && ids.contains(k.getKey())) {
table.removeRow(row);
} else {
row++;
}
}
if (table.getRowCount() == 1) {
display(Collections.<AccountSshKey> emptyList());
} else {
updateDeleteButton();
}
}
});
}
}
void display(final List<AccountSshKey> result) {
if (result.isEmpty()) {
setKeyTableVisible(false);
showAddKeyBlock(true);
} else {
while (1 < table.getRowCount())
table.removeRow(table.getRowCount() - 1);
for (final AccountSshKey k : result) {
addOneKey(k);
}
setKeyTableVisible(true);
deleteKey.setEnabled(false);
}
}
void addOneKey(final AccountSshKey k) {
final FlexCellFormatter fmt = table.getFlexCellFormatter();
final int row = table.getRowCount();
table.insertRow(row);
applyDataRowStyle(row);
final CheckBox sel = new CheckBox();
sel.addValueChangeHandler(updateDeleteHandler);
table.setWidget(row, 1, sel);
if (k.isValid()) {
table.setText(row, 2, "");
fmt.removeStyleName(row, 2, //
Gerrit.RESOURCES.css().sshKeyPanelInvalid());
} else {
table.setText(row, 2, Util.C.sshKeyInvalid());
fmt.addStyleName(row, 2, Gerrit.RESOURCES.css().sshKeyPanelInvalid());
}
table.setText(row, 3, k.getAlgorithm());
CopyableLabel keyLabel = new CopyableLabel(k.getSshPublicKey());
keyLabel.setPreviewText(elide(k.getEncodedKey(), 40));
table.setWidget(row, 4, keyLabel);
table.setText(row, 5, k.getComment());
fmt.addStyleName(row, 1, Gerrit.RESOURCES.css().iconCell());
fmt.addStyleName(row, 4, Gerrit.RESOURCES.css().sshKeyPanelEncodedKey());
for (int c = 2; c <= 5; c++) {
fmt.addStyleName(row, c, Gerrit.RESOURCES.css().dataCell());
}
setRowItem(row, k);
}
void updateDeleteButton() {
boolean on = false;
for (int row = 1; row < table.getRowCount(); row++) {
CheckBox sel = (CheckBox) table.getWidget(row, 1);
if (sel.getValue()) {
on = true;
break;
}
}
deleteKey.setEnabled(on);
}
}
static String elide(final String s, final int len) {
if (s == null || s.length() < len || len <= 10) {
return s;
}
return s.substring(0, len - 10) + "..." + s.substring(s.length() - 10);
}
}