1/*
2 * Copyright 2011, 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
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29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32package org.jf.dexlib.Code.Analysis;
33
34import org.jf.dexlib.Code.OdexedInvokeInline;
35import org.jf.dexlib.Code.OdexedInvokeVirtual;
36
37import java.io.*;
38import java.util.ArrayList;
39import java.util.List;
40import java.util.regex.Matcher;
41import java.util.regex.Pattern;
42
43public class CustomInlineMethodResolver extends InlineMethodResolver {
44    private DeodexUtil.InlineMethod[] inlineMethods;
45
46    public CustomInlineMethodResolver(String inlineTable) {
47        FileReader fr = null;
48        try {
49            fr = new FileReader(inlineTable);
50        } catch (FileNotFoundException ex) {
51            throw new RuntimeException("Could not find inline table file: " + inlineTable);
52        }
53
54        List<String> lines = new ArrayList<String>();
55
56        BufferedReader br = new BufferedReader(fr);
57
58        try {
59            String line = br.readLine();
60
61            while (line != null) {
62                if (line.length() > 0) {
63                    lines.add(line);
64                }
65
66                line = br.readLine();
67            }
68        } catch (IOException ex) {
69            throw new RuntimeException("Error while reading file: " + inlineTable, ex);
70        }
71
72        inlineMethods = new DeodexUtil.InlineMethod[lines.size()];
73
74        for (int i=0; i<inlineMethods.length; i++) {
75            inlineMethods[i] = parseAndResolveInlineMethod(lines.get(i));
76        }
77    }
78
79    @Override
80    public DeodexUtil.InlineMethod resolveExecuteInline(AnalyzedInstruction analyzedInstruction) {
81        assert analyzedInstruction.instruction instanceof OdexedInvokeInline;
82
83        OdexedInvokeInline instruction = (OdexedInvokeInline)analyzedInstruction.instruction;
84        int methodIndex = instruction.getInlineIndex();
85
86        if (methodIndex < 0 || methodIndex >= inlineMethods.length) {
87            throw new RuntimeException("Invalid method index: " + methodIndex);
88        }
89        return inlineMethods[methodIndex];
90    }
91
92    private static final Pattern longMethodPattern = Pattern.compile("(L[^;]+;)->([^(]+)\\(([^)]*)\\)(.+)");
93
94    private DeodexUtil.InlineMethod parseAndResolveInlineMethod(String inlineMethod) {
95        Matcher m = longMethodPattern.matcher(inlineMethod);
96        if (!m.matches()) {
97            assert false;
98            throw new RuntimeException("Invalid method descriptor: " + inlineMethod);
99        }
100
101        String className = m.group(1);
102        String methodName = m.group(2);
103        String methodParams = m.group(3);
104        String methodRet = m.group(4);
105
106        ClassPath.ClassDef classDef = ClassPath.getClassDef(className, false);
107        int methodType = classDef.getMethodType(String.format("%s(%s)%s", methodName, methodParams, methodRet));
108
109        if (methodType == -1) {
110            throw new RuntimeException("Cannot resolve inline method: " + inlineMethod);
111        }
112
113        return new DeodexUtil.InlineMethod(methodType, className, methodName, methodParams, methodRet);
114    }
115}
116