1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.printservice.recommendation.plugin.xerox; 17 18 import android.net.nsd.NsdServiceInfo; 19 import android.text.TextUtils; 20 21 import java.nio.charset.StandardCharsets; 22 import java.util.Locale; 23 import java.util.Map; 24 25 class MDnsUtils { 26 public static final String ATTRIBUTE__TY = "ty"; 27 public static final String ATTRIBUTE__PRODUCT = "product"; 28 public static final String ATTRIBUTE__USB_MFG = "usb_MFG"; 29 public static final String ATTRIBUTE__USB_MDL = "usb_MDL"; 30 public static final String ATTRIBUTE__MFG = "mfg"; 31 public static final String EXCLUDE_FUJI = "fuji"; 32 public static final String PDL_ATTRIBUTE = "pdl"; 33 34 public static boolean isVendorPrinter(NsdServiceInfo networkDevice, String[] vendorValues) { 35 36 Map<String, byte[]> attributes = networkDevice.getAttributes(); 37 String product = getString(attributes.get(ATTRIBUTE__PRODUCT)); 38 String ty = getString(attributes.get(ATTRIBUTE__TY)); 39 String usbMfg = getString(attributes.get(ATTRIBUTE__USB_MFG)); 40 String usbMdl = getString(attributes.get(ATTRIBUTE__USB_MDL)); 41 String mfg = getString(attributes.get(ATTRIBUTE__MFG)); 42 return (containsVendor(product, vendorValues) || containsVendor(ty, vendorValues) || 43 containsVendor(usbMfg, vendorValues) || containsVendor(mfg, vendorValues)) && 44 !(containsString(ty, EXCLUDE_FUJI) || containsString(product, EXCLUDE_FUJI) || 45 containsString(usbMdl, EXCLUDE_FUJI)); 46 } 47 48 public static String getVendor(NsdServiceInfo networkDevice) { 49 String vendor; 50 51 Map<String, byte[]> attributes = networkDevice.getAttributes(); 52 vendor = getString(attributes.get(ATTRIBUTE__MFG)); 53 if (!TextUtils.isEmpty(vendor)) return vendor; 54 vendor = getString(attributes.get(ATTRIBUTE__USB_MFG)); 55 if (!TextUtils.isEmpty(vendor)) return vendor; 56 57 return null; 58 } 59 60 public static boolean checkPDLSupport(NsdServiceInfo networkDevice, String[] pdlFormats) { 61 if (pdlFormats == null) return false; 62 63 String pdls = MDnsUtils.getString(networkDevice.getAttributes().get(PDL_ATTRIBUTE)); 64 if (pdls != null) { 65 for (String pdl : pdlFormats) { 66 if (pdls.contains(pdl)) { 67 return true; 68 } 69 } 70 } 71 return false; 72 } 73 74 private static boolean containsVendor(String container, String[] vendorValues) { 75 if ((container == null) || (vendorValues == null)) return false; 76 for (String value : vendorValues) { 77 if (containsString(container, value) 78 || containsString(container.toLowerCase(Locale.US), value.toLowerCase(Locale.US)) 79 || containsString(container.toUpperCase(Locale.US), value.toUpperCase(Locale.US))) 80 return true; 81 } 82 return false; 83 } 84 85 private static String getString(byte[] value) { 86 if (value != null) return new String(value, StandardCharsets.UTF_8); 87 return null; 88 } 89 90 private static boolean containsString(String container, String contained) { 91 return (container != null) && (contained != null) && (container.equalsIgnoreCase(contained) || container.contains(contained + " ")); 92 } 93 } 94