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
|
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SIMPLE_PERF_READ_APK_H_
#define SIMPLE_PERF_READ_APK_H_
#include <stdint.h>
#include <memory>
#include <string>
#include <tuple>
#include <unordered_map>
#include "read_elf.h"
namespace simpleperf {
// Container for info an on ELF file embedded into an APK file
class EmbeddedElf {
public:
EmbeddedElf() : entry_offset_(0), entry_size_(0) {}
EmbeddedElf(const std::string& filepath, const std::string& entry_name, uint64_t entry_offset,
size_t entry_size)
: filepath_(filepath),
entry_name_(entry_name),
entry_offset_(entry_offset),
entry_size_(entry_size) {}
// Path to APK file
const std::string& filepath() const { return filepath_; }
// Entry name within zip archive
const std::string& entry_name() const { return entry_name_; }
// Offset of zip entry from start of containing APK file
uint64_t entry_offset() const { return entry_offset_; }
// Size of zip entry (length of embedded ELF)
uint32_t entry_size() const { return entry_size_; }
private:
std::string filepath_; // containing APK path
std::string entry_name_; // name of entry in zip index of embedded elf file
uint64_t entry_offset_; // offset of ELF from start of containing APK file
uint32_t entry_size_; // size of ELF file in zip
};
// APK inspector helper class
class ApkInspector {
public:
static EmbeddedElf* FindElfInApkByOffset(const std::string& apk_path, uint64_t file_offset);
static EmbeddedElf* FindElfInApkByName(const std::string& apk_path,
const std::string& entry_name);
private:
static std::unique_ptr<EmbeddedElf> FindElfInApkByOffsetWithoutCache(const std::string& apk_path,
uint64_t file_offset);
static std::unique_ptr<EmbeddedElf> FindElfInApkByNameWithoutCache(const std::string& apk_path,
const std::string& entry_name);
struct ApkNode {
// Map from entry_offset to EmbeddedElf.
std::unordered_map<uint64_t, std::unique_ptr<EmbeddedElf>> offset_map;
// Map from entry_name to EmbeddedElf.
std::unordered_map<std::string, EmbeddedElf*> name_map;
};
static std::unordered_map<std::string, ApkNode> embedded_elf_cache_;
};
std::string GetUrlInApk(const std::string& apk_path, const std::string& elf_filename);
std::tuple<bool, std::string, std::string> SplitUrlInApk(const std::string& path);
// Parse path like "[anon:dalvik-classes.dex extracted in memory from /..base.apk] (deleted)",
// or "/dev/ashmem/dalvik-classes.dex extracted in memory from /..base.apk (deleted)" on Android P.
bool ParseExtractedInMemoryPath(const std::string& path, std::string* zip_path,
std::string* entry_name);
} // namespace simpleperf
#endif // SIMPLE_PERF_READ_APK_H_
|
