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      1 /*
      2  * (c) Copyright 2016 Samsung Electronics
      3  * (c) Copyright 2016 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  * http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 package com.android.printservice.recommendation.plugin.samsung;
     18 
     19 import android.net.nsd.NsdServiceInfo;
     20 import android.annotation.NonNull;
     21 import android.text.TextUtils;
     22 import android.util.Log;
     23 
     24 import com.android.printservice.recommendation.util.MDNSFilteredDiscovery;
     25 import com.android.printservice.recommendation.util.MDNSUtils;
     26 
     27 import java.util.HashSet;
     28 import java.util.Locale;
     29 import java.util.Map;
     30 import java.util.Set;
     31 
     32 /**
     33  * Printer filter for Samsung printer models supported by the print service plugin
     34  */
     35 class PrinterFilterSamsung implements MDNSFilteredDiscovery.PrinterFilter {
     36     private static final String TAG = "PrinterFilterSamsung";
     37 
     38     static final Set<String> SAMSUNG_MDNS_SERVICES = new HashSet<String>() {{
     39         add("_pdl-datastream._tcp");
     40     }};
     41 
     42     private static final String[] NOT_SUPPORTED_MODELS = new String[]{
     43             "SCX-5x15",
     44             "SF-555P",
     45             "CF-555P",
     46             "SCX-4x16",
     47             "SCX-4214F",
     48             "CLP-500",
     49             "CJX-",
     50             "MJC-"
     51     };
     52     private static final String ATTR_USB_MFG = "usb_MFG";
     53     private static final String ATTR_MFG = "mfg";
     54     private static final String ATTR_USB_MDL = "usb_MDL";
     55     private static final String ATTR_MDL = "mdl";
     56     private static final String ATTR_PRODUCT = "product";
     57     private static final String ATTR_TY = "ty";
     58 
     59     private static Set<String> SAMUNG_VENDOR_SET = new HashSet<String>() {{
     60         add("samsung");
     61     }};
     62 
     63     @Override
     64     public boolean matchesCriteria(NsdServiceInfo nsdServiceInfo) {
     65         if (!MDNSUtils.isSupportedServiceType(nsdServiceInfo, SAMSUNG_MDNS_SERVICES)) {
     66             return false;
     67         }
     68 
     69         if (!MDNSUtils.isVendorPrinter(nsdServiceInfo, SAMUNG_VENDOR_SET)) {
     70             return false;
     71         }
     72 
     73         String modelName = getSamsungModelName(nsdServiceInfo);
     74         if (modelName != null && isSupportedSamsungModel(modelName)) {
     75             Log.d(TAG, "Samsung printer found: " + nsdServiceInfo.getServiceName());
     76             return true;
     77         }
     78         return false;
     79     }
     80 
     81     private boolean isSupportedSamsungModel(String model) {
     82         if (!TextUtils.isEmpty(model)) {
     83             String modelToUpper = model.toUpperCase(Locale.US);
     84             for (String unSupportedPrinter : NOT_SUPPORTED_MODELS) {
     85                 if (modelToUpper.contains(unSupportedPrinter)) {
     86                     return false;
     87                 }
     88             }
     89         }
     90         return true;
     91     }
     92 
     93     private String getSamsungModelName(@NonNull NsdServiceInfo resolvedDevice) {
     94         Map<String,byte[]> attributes = resolvedDevice.getAttributes();
     95         String usb_mfg = MDNSUtils.getString(attributes.get(ATTR_USB_MFG));
     96         if (TextUtils.isEmpty(usb_mfg)) {
     97             usb_mfg = MDNSUtils.getString(attributes.get(ATTR_MFG));
     98         }
     99 
    100         String usb_mdl = MDNSUtils.getString(attributes.get(ATTR_USB_MDL));
    101         if (TextUtils.isEmpty(usb_mdl)) {
    102             usb_mdl = MDNSUtils.getString(attributes.get(ATTR_MDL));
    103         }
    104 
    105         String modelName;
    106         if (!TextUtils.isEmpty(usb_mfg) && !TextUtils.isEmpty(usb_mdl)) {
    107             modelName = usb_mfg.trim() + " " + usb_mdl.trim();
    108         } else {
    109             modelName = MDNSUtils.getString(attributes.get(ATTR_PRODUCT));
    110             if (TextUtils.isEmpty(modelName)) {
    111                 modelName = MDNSUtils.getString(attributes.get(ATTR_TY));
    112             }
    113         }
    114 
    115         return modelName;
    116     }
    117 }
    118