Added a warning dialog when installing a CA certificate

This is part of the changes to improve the UX and language for installing certificates.
Previously, the different types of certificate used the same installation flow.
Due to concerns around users installing CA certificates without understanding the conseqences,
this CL introduces a new warning dialog when a CA certificate is installed from settings.

Bug: 139173976
Test: Atest com.android.settings.security
      manual testing from Settings by selecting the certificate type
	preference and ensuring the installation flow still worked as expected.

Screenshot of the screen: https://hsv.googleplex.com/5046848484016128

Change-Id: If95bffd1e68f14734fb20e8cc4b60eeb1c372358

1 files changed, 83 insertions, 0 deletions

diff --git a/src/com/android/settings/security/InstallCaCertificateWarning.java b/src/com/android/settings/security/InstallCaCertificateWarning.java
new file mode 100644
index 0000000000..701d9f4643
--- /dev/null
+++ b/src/com/android/settings/security/InstallCaCertificateWarning.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2019 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.android.settings.security;
+
+import android.annotation.Nullable;
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.security.Credentials;
+import android.view.View;
+import android.widget.Toast;
+
+import com.android.settings.R;
+
+import com.google.android.setupcompat.template.FooterBarMixin;
+import com.google.android.setupcompat.template.FooterButton;
+import com.google.android.setupdesign.GlifLayout;
+
+/**
+ * Creates a warning dialog explaining the consequences of installing a CA certificate
+ * This is displayed before a CA certificate can be installed from Settings.
+ */
+public class InstallCaCertificateWarning extends Activity {
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.ca_certificate_warning_dialog);
+        final GlifLayout layout = findViewById(R.id.setup_wizard_layout);
+
+        final FooterBarMixin mixin = layout.getMixin(FooterBarMixin.class);
+        mixin.setSecondaryButton(
+                new FooterButton.Builder(this)
+                        .setText(R.string.ca_certificate_warning_install_anyway)
+                        .setListener(installCaCertificate())
+                        .setButtonType(FooterButton.ButtonType.OTHER)
+                        .setTheme(R.style.SudGlifButton_Secondary)
+                        .build()
+        );
+
+        mixin.setPrimaryButton(
+                new FooterButton.Builder(this)
+                        .setText(R.string.ca_certificate_warning_dont_install)
+                        .setListener(returnToInstallCertificateFromStorage())
+                        .setButtonType(FooterButton.ButtonType.NEXT)
+                        .setTheme(R.style.SudGlifButton_Primary)
+                        .build()
+        );
+    }
+
+    private View.OnClickListener installCaCertificate() {
+        return v -> {
+            final Intent intent = new Intent();
+            intent.setAction(Credentials.INSTALL_ACTION);
+            intent.putExtra(Credentials.EXTRA_CERTIFICATE_USAGE, Credentials.CERTIFICATE_USAGE_CA);
+            startActivity(intent);
+            finish();
+        };
+    }
+
+    private View.OnClickListener returnToInstallCertificateFromStorage() {
+        return v -> {
+            Toast.makeText(this, R.string.cert_not_installed, Toast.LENGTH_SHORT).show();
+            finish();
+        };
+    }
+
+}