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      1 /*
      2  * Copyright 2013, Google Inc.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  *     * Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *     * Redistributions in binary form must reproduce the above
     12  * copyright notice, this list of conditions and the following disclaimer
     13  * in the documentation and/or other materials provided with the
     14  * distribution.
     15  *     * Neither the name of Google Inc. nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 package org.jf.dexlib2;
     33 
     34 import com.google.common.collect.Maps;
     35 import org.jf.util.ExceptionWithContext;
     36 
     37 import javax.annotation.Nullable;
     38 import java.util.HashMap;
     39 
     40 public class VerificationError {
     41     public static final int GENERIC = 1;
     42     public static final int NO_SUCH_CLASS = 2;
     43     public static final int NO_SUCH_FIELD = 3;
     44     public static final int NO_SUCH_METHOD = 4;
     45     public static final int ILLEGAL_CLASS_ACCESS = 5;
     46     public static final int ILLEGAL_FIELD_ACCESS = 6;
     47     public static final int ILLEGAL_METHOD_ACCESS = 7;
     48     public static final int CLASS_CHANGE_ERROR = 8;
     49     public static final int INSTANTIATION_ERROR = 9;
     50 
     51     private static final HashMap<String, Integer> verificationErrorNames = Maps.newHashMap();
     52 
     53     static {
     54         verificationErrorNames.put("generic-error", GENERIC);
     55         verificationErrorNames.put("no-such-class", NO_SUCH_CLASS);
     56         verificationErrorNames.put("no-such-field", NO_SUCH_FIELD);
     57         verificationErrorNames.put("no-such-method", NO_SUCH_METHOD);
     58         verificationErrorNames.put("illegal-class-access", ILLEGAL_CLASS_ACCESS);
     59         verificationErrorNames.put("illegal-field-access", ILLEGAL_FIELD_ACCESS);
     60         verificationErrorNames.put("illegal-method-access", ILLEGAL_METHOD_ACCESS);
     61         verificationErrorNames.put("class-change-error", CLASS_CHANGE_ERROR);
     62         verificationErrorNames.put("instantiation-error", INSTANTIATION_ERROR);
     63     }
     64 
     65     @Nullable
     66     public static String getVerificationErrorName(int verificationError) {
     67         switch (verificationError) {
     68             case GENERIC:
     69                 return "generic-error";
     70             case NO_SUCH_CLASS:
     71                 return "no-such-class";
     72             case NO_SUCH_FIELD:
     73                 return "no-such-field";
     74             case NO_SUCH_METHOD:
     75                 return "no-such-method";
     76             case ILLEGAL_CLASS_ACCESS:
     77                 return "illegal-class-access";
     78             case ILLEGAL_FIELD_ACCESS:
     79                 return "illegal-field-access";
     80             case ILLEGAL_METHOD_ACCESS:
     81                 return "illegal-method-access";
     82             case CLASS_CHANGE_ERROR:
     83                 return "class-change-error";
     84             case INSTANTIATION_ERROR:
     85                 return "instantiation-error";
     86             default:
     87                 return null;
     88         }
     89     }
     90 
     91     public static int getVerificationError(String verificationError) {
     92         Integer ret = verificationErrorNames.get(verificationError);
     93         if (ret == null) {
     94             throw new ExceptionWithContext("Invalid verification error: %s", verificationError);
     95         }
     96         return ret;
     97     }
     98 
     99     public static boolean isValidVerificationError(int verificationError) {
    100         return verificationError > 0 && verificationError < 10;
    101     }
    102 }
    103