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      1 package com.android.hotspot2.osu;
      2 
      3 import com.android.hotspot2.omadm.OMAConstants;
      4 import com.android.hotspot2.omadm.OMAException;
      5 import com.android.hotspot2.omadm.XMLNode;
      6 
      7 import java.util.HashMap;
      8 import java.util.Map;
      9 
     10 public abstract class OSUResponse {
     11     private static final String SPPVersionAttribute = "sppVersion";
     12     private static final String SPPStatusAttribute = "sppStatus";
     13     private static final String SPPSessionIDAttribute = "sessionID";
     14 
     15     private final OSUMessageType mMessageType;
     16     private final String mVersion;
     17     private final String mSessionID;
     18     private final OSUStatus mStatus;
     19     private final OSUError mError;
     20     private final Map<String, String> mAttributes;
     21 
     22     protected OSUResponse(XMLNode root, OSUMessageType messageType, String... attributes)
     23             throws OMAException {
     24         mMessageType = messageType;
     25         String ns = root.getNameSpace() + ":";
     26         mVersion = root.getAttributeValue(ns + SPPVersionAttribute);
     27         mSessionID = root.getAttributeValue(ns + SPPSessionIDAttribute);
     28 
     29         String status = root.getAttributeValue(ns + SPPStatusAttribute);
     30         if (status == null) {
     31             throw new OMAException("Missing status");
     32         }
     33         mStatus = OMAConstants.mapStatus(status);
     34 
     35         if (mVersion == null || mSessionID == null || mStatus == null) {
     36             throw new OMAException("Incomplete request: " + root.getAttributes());
     37         }
     38 
     39         if (attributes != null) {
     40             mAttributes = new HashMap<>();
     41             for (String attribute : attributes) {
     42                 String value = root.getAttributeValue(ns + attribute);
     43                 if (value == null) {
     44                     throw new OMAException("Missing attribute: " + attribute);
     45                 }
     46                 mAttributes.put(attribute, value);
     47             }
     48         } else {
     49             mAttributes = null;
     50         }
     51 
     52         if (mStatus == OSUStatus.Error) {
     53             OSUError error = null;
     54             String errorTag = ns + "sppError";
     55             for (XMLNode child : root.getChildren()) {
     56                 if (child.getTag().equals(errorTag)) {
     57                     error = OMAConstants.mapError(child.getAttributeValue("errorCode"));
     58                     break;
     59                 }
     60             }
     61             mError = error;
     62         } else {
     63             mError = null;
     64         }
     65     }
     66 
     67     public OSUMessageType getMessageType() {
     68         return mMessageType;
     69     }
     70 
     71     public String getVersion() {
     72         return mVersion;
     73     }
     74 
     75     public String getSessionID() {
     76         return mSessionID;
     77     }
     78 
     79     public OSUStatus getStatus() {
     80         return mStatus;
     81     }
     82 
     83     public OSUError getError() {
     84         return mError;
     85     }
     86 
     87     protected Map<String, String> getAttributes() {
     88         return mAttributes;
     89     }
     90 
     91     @Override
     92     public String toString() {
     93         return String.format("%s version '%s', status %s, session-id '%s'%s",
     94                 mMessageType, mVersion, mStatus, mSessionID, mError != null
     95                         ? (" (" + mError + ")") : "");
     96     }
     97 }
     98