1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "common/libs/utils/archive.h"
18
19 #include <string>
20 #include <vector>
21
22 #include <android-base/strings.h>
23 #include <android-base/logging.h>
24
25 #include "common/libs/utils/subprocess.h"
26
27 namespace cuttlefish {
28
Archive(const std::string & file)29 Archive::Archive(const std::string& file) : file(file) {
30 }
31
~Archive()32 Archive::~Archive() {
33 }
34
Contents()35 std::vector<std::string> Archive::Contents() {
36 Command bsdtar_cmd("/usr/bin/bsdtar");
37 bsdtar_cmd.AddParameter("-tf");
38 bsdtar_cmd.AddParameter(file);
39 std::string bsdtar_input, bsdtar_output;
40 auto bsdtar_ret = RunWithManagedStdio(std::move(bsdtar_cmd), &bsdtar_input,
41 &bsdtar_output, nullptr);
42 if (bsdtar_ret != 0) {
43 LOG(ERROR) << "`bsdtar -tf \"" << file << "\"` returned " << bsdtar_ret;
44 }
45 return bsdtar_ret == 0
46 ? android::base::Split(bsdtar_output, "\n")
47 : std::vector<std::string>();
48 }
49
ExtractAll(const std::string & target_directory)50 bool Archive::ExtractAll(const std::string& target_directory) {
51 return ExtractFiles({}, target_directory);
52 }
53
ExtractFiles(const std::vector<std::string> & to_extract,const std::string & target_directory)54 bool Archive::ExtractFiles(const std::vector<std::string>& to_extract,
55 const std::string& target_directory) {
56 Command bsdtar_cmd("/usr/bin/bsdtar");
57 bsdtar_cmd.AddParameter("-x");
58 bsdtar_cmd.AddParameter("-v");
59 bsdtar_cmd.AddParameter("-C");
60 bsdtar_cmd.AddParameter(target_directory);
61 bsdtar_cmd.AddParameter("-f");
62 bsdtar_cmd.AddParameter(file);
63 bsdtar_cmd.AddParameter("-S");
64 for (const auto& extract : to_extract) {
65 bsdtar_cmd.AddParameter(extract);
66 }
67 bsdtar_cmd.RedirectStdIO(Subprocess::StdIOChannel::kStdOut,
68 Subprocess::StdIOChannel::kStdErr);
69 auto bsdtar_ret = bsdtar_cmd.Start().Wait();
70 if (bsdtar_ret != 0) {
71 LOG(ERROR) << "bsdtar extraction on \"" << file << "\" returned " << bsdtar_ret;
72 }
73 return bsdtar_ret == 0;
74 }
75
ExtractToMemory(const std::string & path)76 std::string Archive::ExtractToMemory(const std::string& path) {
77 Command bsdtar_cmd("/usr/bin/bsdtar");
78 bsdtar_cmd.AddParameter("-xf");
79 bsdtar_cmd.AddParameter(file);
80 bsdtar_cmd.AddParameter("-O");
81 bsdtar_cmd.AddParameter(path);
82 std::string stdout, stderr;
83 auto ret = RunWithManagedStdio(std::move(bsdtar_cmd), nullptr, &stdout,
84 nullptr);
85 if (ret != 0) {
86 LOG(ERROR) << "Could not extract \"" << path << "\" from \"" << file
87 << "\" to memory.";
88 return "";
89 }
90 return stdout;
91 }
92
93 } // namespace cuttlefish
94