1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_ZUCCHINI_DISASSEMBLER_DEX_H_
#define COMPONENTS_ZUCCHINI_DISASSEMBLER_DEX_H_
#include <stdint.h>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "components/zucchini/disassembler.h"
#include "components/zucchini/image_utils.h"
#include "components/zucchini/type_dex.h"
namespace zucchini {
// For consistency, let "canonical order" of DEX data types be the order defined
// in https://source.android.com/devices/tech/dalvik/dex-format "Type Codes"
// section.
class DisassemblerDex : public Disassembler {
public:
static constexpr uint16_t kVersion = 1;
// Pools follow canonical order.
enum ReferencePool : uint8_t {
kStringId,
kTypeId,
kProtoId,
kFieldId,
kMethodId,
// kClassDef, // Unused
kCallSiteId,
kMethodHandle,
kTypeList,
kAnnotationSetRefList,
kAnnotionSet,
kClassData,
kCode,
kStringData,
kAnnotation,
kEncodedArray,
kAnnotationsDirectory,
kCallSite,
kNumPools
};
// Types are grouped and ordered by target ReferencePool. This is required by
// Zucchini-apply, which visits references by type order and sequentially
// handles pools in the same order. Type-pool association is established in
// MakeReferenceGroups(), and verified by a unit test.
enum ReferenceType : uint8_t {
kTypeIdToDescriptorStringId, // kStringId
kProtoIdToShortyStringId,
kFieldIdToNameStringId,
kMethodIdToNameStringId,
kClassDefToSourceFileStringId,
kCodeToStringId16,
kCodeToStringId32,
kProtoIdToReturnTypeId, // kTypeId
kFieldIdToClassTypeId,
kFieldIdToTypeId,
kMethodIdToClassTypeId,
kClassDefToClassTypeId,
kClassDefToSuperClassTypeId,
kTypeListToTypeId,
kCodeToTypeId,
kCodeToProtoId, // kProtoId
kMethodIdToProtoId,
kCodeToFieldId, // kFieldId
kMethodHandleToFieldId,
kAnnotationsDirectoryToFieldId,
kCodeToMethodId, // kMethodId
kMethodHandleToMethodId,
kAnnotationsDirectoryToMethodId,
kAnnotationsDirectoryToParameterMethodId,
kCodeToCallSiteId, // kCallSiteId
kCodeToMethodHandle, // kMethodHandle
kProtoIdToParametersTypeList, // kTypeList
kClassDefToInterfacesTypeList,
kAnnotationsDirectoryToParameterAnnotationSetRef, // kAnnotationSetRef,
kAnnotationSetRefListToAnnotationSet, // kAnnotationSet,
kAnnotationsDirectoryToClassAnnotationSet,
kAnnotationsDirectoryToFieldAnnotationSet,
kAnnotationsDirectoryToMethodAnnotationSet,
kClassDefToClassData, // kClassData
kCodeToRelCode8, // kCode
kCodeToRelCode16,
kCodeToRelCode32,
kStringIdToStringData, // kStringData
kAnnotationSetToAnnotation, // kAnnotation
kClassDefToStaticValuesEncodedArray, // kEncodedArrayItem
kClassDefToAnnotationDirectory, // kAnnotationsDirectory
kCallSiteIdToCallSite, // kCallSite
kNumTypes
};
DisassemblerDex();
DisassemblerDex(const DisassemblerDex&) = delete;
const DisassemblerDex& operator=(const DisassemblerDex&) = delete;
~DisassemblerDex() override;
// Applies quick checks to determine if |image| *may* point to the start of an
// executable. Returns true on success.
static bool QuickDetect(ConstBufferView image);
// Disassembler:
ExecutableType GetExeType() const override;
std::string GetExeTypeString() const override;
std::vector<ReferenceGroup> MakeReferenceGroups() const override;
// Functions that return reference readers. These follow canonical order of
// *locations* (unlike targets for ReferenceType). This allows functions with
// similar parsing logic to appear togeter.
std::unique_ptr<ReferenceReader> MakeReadStringIdToStringData(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadTypeIdToDescriptorStringId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadProtoIdToShortyStringId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadProtoIdToReturnTypeId32(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadProtoIdToParametersTypeList(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadFieldToClassTypeId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadFieldToTypeId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadFieldToNameStringId32(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadMethodIdToClassTypeId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadMethodIdToProtoId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadMethodIdToNameStringId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToClassTypeId32(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToSuperClassTypeId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToInterfacesTypeList(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToSourceFileStringId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToAnnotationDirectory(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToClassData(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadClassDefToStaticValuesEncodedArray(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCallSiteIdToCallSite32(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadMethodHandleToFieldId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadMethodHandleToMethodId16(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadTypeListToTypeId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadAnnotationSetToAnnotation(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadAnnotationSetRefListToAnnotationSet(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader>
MakeReadAnnotationsDirectoryToClassAnnotationSet(offset_t lo, offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadAnnotationsDirectoryToFieldId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader>
MakeReadAnnotationsDirectoryToFieldAnnotationSet(offset_t lo, offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadAnnotationsDirectoryToMethodId32(
offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader>
MakeReadAnnotationsDirectoryToMethodAnnotationSet(offset_t lo, offset_t hi);
std::unique_ptr<ReferenceReader>
MakeReadAnnotationsDirectoryToParameterMethodId32(offset_t lo, offset_t hi);
std::unique_ptr<ReferenceReader>
MakeReadAnnotationsDirectoryToParameterAnnotationSetRef(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToStringId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToStringId32(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToTypeId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToProtoId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToFieldId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToMethodId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToCallSiteId16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToMethodHandle16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToRelCode8(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToRelCode16(offset_t lo,
offset_t hi);
std::unique_ptr<ReferenceReader> MakeReadCodeToRelCode32(offset_t lo,
offset_t hi);
// Functions that return reference writers. Different readers may share a
// common writer. Therefore these loosely follow canonical order of locations,
std::unique_ptr<ReferenceWriter> MakeWriteStringId16(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteStringId32(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteTypeId16(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteTypeId32(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteProtoId16(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteFieldId16(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteFieldId32(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteMethodId16(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteMethodId32(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteCallSiteId16(
MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteMethodHandle16(
MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteRelCode8(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteRelCode16(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteRelCode32(MutableBufferView image);
std::unique_ptr<ReferenceWriter> MakeWriteAbs32(MutableBufferView image);
private:
friend Disassembler;
using MapItemMap =
std::map<uint16_t, raw_ptr<const dex::MapItem, CtnExperimental>>;
// Disassembler:
bool Parse(ConstBufferView image) override;
bool ParseHeader();
raw_ptr<const dex::HeaderItem> header_ = nullptr;
int dex_version_ = 0;
MapItemMap map_item_map_ = {};
dex::MapItem string_map_item_ = {};
dex::MapItem type_map_item_ = {};
dex::MapItem proto_map_item_ = {};
dex::MapItem field_map_item_ = {};
dex::MapItem method_map_item_ = {};
dex::MapItem class_def_map_item_ = {};
dex::MapItem call_site_map_item_ = {};
dex::MapItem method_handle_map_item_ = {};
dex::MapItem type_list_map_item_ = {};
dex::MapItem annotation_set_ref_list_map_item_ = {};
dex::MapItem annotation_set_map_item_ = {};
dex::MapItem code_map_item_ = {};
dex::MapItem annotations_directory_map_item_ = {};
// Sorted list of offsets of parsed items in |image_|.
std::vector<offset_t> code_item_offsets_;
std::vector<offset_t> type_list_offsets_;
std::vector<offset_t> annotation_set_ref_list_offsets_;
std::vector<offset_t> annotation_set_offsets_;
std::vector<offset_t> annotations_directory_item_offsets_;
std::vector<offset_t> annotations_directory_item_field_annotation_offsets_;
std::vector<offset_t> annotations_directory_item_method_annotation_offsets_;
std::vector<offset_t>
annotations_directory_item_parameter_annotation_offsets_;
};
} // namespace zucchini
#endif // COMPONENTS_ZUCCHINI_DISASSEMBLER_DEX_H_
|
