PrintRecommendationService: Remove CloudPrintPlugin

The server side of the Cloud Print service was turned down in 2021, so
no printers can be used with this service any more.  Remove
CloudPrintPlugin from PrintRecommendationService so that this print
service is no longer recommended even if printers locally respond to the
_privet._tcp mDNS query.

Bug: 321936819
Test: build
Change-Id: If11aca3911bda055df823fcc5287e24110bb5c23

3 files changed, 0 insertions, 176 deletions

diff --git a/packages/PrintRecommendationService/res/values/strings.xml b/packages/PrintRecommendationService/res/values/strings.xml
index 2bab1b65529b..b6c45b7a23c8 100644
--- a/packages/PrintRecommendationService/res/values/strings.xml
+++ b/packages/PrintRecommendationService/res/values/strings.xml
@@ -18,7 +18,6 @@
 -->
 
 <resources>
-    <string name="plugin_vendor_google_cloud_print">Cloud Print</string>
     <string name="plugin_vendor_hp">HP</string>
     <string name="plugin_vendor_lexmark">Lexmark</string>
     <string name="plugin_vendor_brother">Brother</string>
diff --git a/packages/PrintRecommendationService/src/com/android/printservice/recommendation/RecommendationServiceImpl.java b/packages/PrintRecommendationService/src/com/android/printservice/recommendation/RecommendationServiceImpl.java
index 5a756fe50209..4ec88830386b 100644
--- a/packages/PrintRecommendationService/src/com/android/printservice/recommendation/RecommendationServiceImpl.java
+++ b/packages/PrintRecommendationService/src/com/android/printservice/recommendation/RecommendationServiceImpl.java
@@ -23,7 +23,6 @@ import android.printservice.recommendation.RecommendationInfo;
 import android.printservice.recommendation.RecommendationService;
 import android.util.Log;
 
-import com.android.printservice.recommendation.plugin.google.CloudPrintPlugin;
 import com.android.printservice.recommendation.plugin.hp.HPRecommendationPlugin;
 import com.android.printservice.recommendation.plugin.mdnsFilter.MDNSFilterPlugin;
 import com.android.printservice.recommendation.plugin.mdnsFilter.VendorConfig;
@@ -77,14 +76,6 @@ public class RecommendationServiceImpl extends RecommendationService
         }
 
         try {
-            mPlugins.add(new RemotePrintServicePlugin(new CloudPrintPlugin(this), this,
-                    true));
-        } catch (Exception e) {
-            Log.e(LOG_TAG, "Could not initiate "
-                            + getString(R.string.plugin_vendor_google_cloud_print) + " plugin", e);
-        }
-
-        try {
             mPlugins.add(new RemotePrintServicePlugin(new HPRecommendationPlugin(this), this,
                     false));
         } catch (Exception e) {
diff --git a/packages/PrintRecommendationService/src/com/android/printservice/recommendation/plugin/google/CloudPrintPlugin.java b/packages/PrintRecommendationService/src/com/android/printservice/recommendation/plugin/google/CloudPrintPlugin.java
deleted file mode 100644
index 3029d10d4cf3..000000000000
--- a/packages/PrintRecommendationService/src/com/android/printservice/recommendation/plugin/google/CloudPrintPlugin.java
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Copyright (C) 2017 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.printservice.recommendation.plugin.google;
-
-import static com.android.printservice.recommendation.util.MDNSUtils.ATTRIBUTE_TY;
-
-import android.content.Context;
-import android.util.ArrayMap;
-import android.util.Log;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.StringRes;
-
-import com.android.printservice.recommendation.PrintServicePlugin;
-import com.android.printservice.recommendation.R;
-import com.android.printservice.recommendation.util.MDNSFilteredDiscovery;
-
-import java.net.Inet4Address;
-import java.net.InetAddress;
-import java.nio.charset.StandardCharsets;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * Plugin detecting <a href="https://developers.google.com/cloud-print/docs/privet">Google Cloud
- * Print</a> printers.
- */
-public class CloudPrintPlugin implements PrintServicePlugin {
-    private static final String LOG_TAG = CloudPrintPlugin.class.getSimpleName();
-    private static final boolean DEBUG = false;
-
-    private static final String ATTRIBUTE_TXTVERS = "txtvers";
-    private static final String ATTRIBUTE_URL = "url";
-    private static final String ATTRIBUTE_TYPE = "type";
-    private static final String ATTRIBUTE_ID = "id";
-    private static final String ATTRIBUTE_CS = "cs";
-
-    private static final String TYPE = "printer";
-
-    private static final String PRIVET_SERVICE = "_privet._tcp";
-
-    /** The required mDNS service types */
-    private static final Set<String> PRINTER_SERVICE_TYPE = Set.of(
-            PRIVET_SERVICE); // Not checking _printer_._sub
-
-    /** All possible connection states */
-    private static final Set<String> POSSIBLE_CONNECTION_STATES = Set.of(
-            "online",
-            "offline",
-            "connecting",
-            "not-configured");
-
-    private static final byte SUPPORTED_TXTVERS = '1';
-
-    /** The mDNS filtered discovery */
-    private final MDNSFilteredDiscovery mMDNSFilteredDiscovery;
-
-    /**
-     * Create a plugin detecting Google Cloud Print printers.
-     *
-     * @param context The context the plugin runs in
-     */
-    public CloudPrintPlugin(@NonNull Context context) {
-        mMDNSFilteredDiscovery = new MDNSFilteredDiscovery(context, PRINTER_SERVICE_TYPE,
-                nsdServiceInfo -> {
-                    // The attributes are case insensitive. For faster searching create a clone of
-                    // the map with the attribute-keys all in lower case.
-                    ArrayMap<String, byte[]> caseInsensitiveAttributes =
-                            new ArrayMap<>(nsdServiceInfo.getAttributes().size());
-                    for (Map.Entry<String, byte[]> entry : nsdServiceInfo.getAttributes()
-                            .entrySet()) {
-                        caseInsensitiveAttributes.put(entry.getKey().toLowerCase(),
-                                entry.getValue());
-                    }
-
-                    if (DEBUG) {
-                        Log.i(LOG_TAG, nsdServiceInfo.getServiceName() + ":");
-                        Log.i(LOG_TAG, "type:  " + nsdServiceInfo.getServiceType());
-                        Log.i(LOG_TAG, "host:  " + nsdServiceInfo.getHost());
-                        for (Map.Entry<String, byte[]> entry : caseInsensitiveAttributes.entrySet()) {
-                            if (entry.getValue() == null) {
-                                Log.i(LOG_TAG, entry.getKey() + "= null");
-                            } else {
-                                Log.i(LOG_TAG, entry.getKey() + "=" + new String(entry.getValue(),
-                                        StandardCharsets.UTF_8));
-                            }
-                        }
-                    }
-
-                    byte[] txtvers = caseInsensitiveAttributes.get(ATTRIBUTE_TXTVERS);
-                    if (txtvers == null || txtvers.length != 1 || txtvers[0] != SUPPORTED_TXTVERS) {
-                        // The spec requires this to be the first attribute, but at this time we
-                        // lost the order of the attributes
-                        return false;
-                    }
-
-                    if (caseInsensitiveAttributes.get(ATTRIBUTE_TY) == null) {
-                        return false;
-                    }
-
-                    byte[] url = caseInsensitiveAttributes.get(ATTRIBUTE_URL);
-                    if (url == null || url.length == 0) {
-                        return false;
-                    }
-
-                    byte[] type = caseInsensitiveAttributes.get(ATTRIBUTE_TYPE);
-                    if (type == null || !TYPE.equals(
-                            new String(type, StandardCharsets.UTF_8).toLowerCase())) {
-                        return false;
-                    }
-
-                    if (caseInsensitiveAttributes.get(ATTRIBUTE_ID) == null) {
-                        return false;
-                    }
-
-                    byte[] cs = caseInsensitiveAttributes.get(ATTRIBUTE_CS);
-                    if (cs == null || !POSSIBLE_CONNECTION_STATES.contains(
-                            new String(cs, StandardCharsets.UTF_8).toLowerCase())) {
-                        return false;
-                    }
-
-                    InetAddress address = nsdServiceInfo.getHost();
-                    if (!(address instanceof Inet4Address)) {
-                        // Not checking for link local address
-                        return false;
-                    }
-
-                    return true;
-                });
-    }
-
-    @Override
-    @NonNull public CharSequence getPackageName() {
-        return "com.google.android.apps.cloudprint";
-    }
-
-    @Override
-    public void start(@NonNull PrinterDiscoveryCallback callback) throws Exception {
-        mMDNSFilteredDiscovery.start(callback);
-    }
-
-    @Override
-    @StringRes public int getName() {
-        return R.string.plugin_vendor_google_cloud_print;
-    }
-
-    @Override
-    public void stop() throws Exception {
-        mMDNSFilteredDiscovery.stop();
-    }
-}