1 /*
2 * Copyright (C) 2023 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 <android-base/logging.h>
18 #include <fuzzbinder/libbinder_driver.h>
19 #include <sys/stat.h>
20
21 #include "CredentialStoreFactory.h"
22
23 using android::security::identity::CredentialStoreFactory;
24 using namespace android;
25
clearDirectory(const char * dirpath,bool recursive)26 void clearDirectory(const char* dirpath, bool recursive) {
27 DIR* dir = opendir(dirpath);
28 CHECK(dir != nullptr);
29 dirent* e;
30 struct stat s;
31 while ((e = readdir(dir)) != nullptr) {
32 if ((strcmp(e->d_name, ".") == 0) || (strcmp(e->d_name, "..") == 0)) {
33 continue;
34 }
35 std::string filename(dirpath);
36 filename.push_back('/');
37 filename.append(e->d_name);
38 int stat_result = lstat(filename.c_str(), &s);
39 CHECK_EQ(0, stat_result) << "unable to stat " << filename;
40 if (S_ISDIR(s.st_mode)) {
41 if (recursive) {
42 clearDirectory(filename.c_str(), true);
43 int rmdir_result = rmdir(filename.c_str());
44 CHECK_EQ(0, rmdir_result) << filename;
45 }
46 } else {
47 int unlink_result = unlink(filename.c_str());
48 CHECK_EQ(0, unlink_result) << filename;
49 }
50 }
51 closedir(dir);
52 }
53
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)54 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
55 std::string dataDir = "/data/cred_store_fuzzer";
56 mkdir(dataDir.c_str(), 0700);
57 sp<CredentialStoreFactory> service = sp<CredentialStoreFactory>::make(dataDir);
58 fuzzService(service, FuzzedDataProvider(data, size));
59 clearDirectory(dataDir.c_str(), true);
60 rmdir(dataDir.c_str());
61 return 0;
62 }
63