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/******************************************************************************
*
* Copyright (C) 2020 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.
*
*****************************************************************************
*/
#include <fuzzer/FuzzedDataProvider.h>
#include <selinux/selinux.h>
#include <string>
std::string GetClass(FuzzedDataProvider &fdp) {
switch (fdp.ConsumeIntegralInRange(0, 9)) {
case 0: return "filesystem";
case 1: return "dir";
case 2: return "file";
case 3: return "lnk_file";
case 4: return "chr_file";
case 5: return "blk_file";
case 6: return "sock_file";
case 7: return "fifo_file";
case 8: return "fd";
default: return fdp.ConsumeRandomLengthString();
}
}
// This is not an exhaustive list.
std::string GetPermission(FuzzedDataProvider &fdp) {
switch (fdp.ConsumeIntegralInRange(0, 7)) {
case 0: return "create";
case 1: return "execute";
case 2: return "getattr";
case 3: return "ioctl";
case 4: return "read";
case 5: return "setattr";
case 6: return "write";
default: return fdp.ConsumeRandomLengthString();
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
FuzzedDataProvider fdp(data, size);
std::string tclass = GetClass(fdp);
std::string perm = GetPermission(fdp);
std::string scon = fdp.ConsumeRandomLengthString();
std::string tcon = fdp.ConsumeRandomLengthString();
selinux_check_access(scon.data(), tcon.data(), tclass.data(), perm.data(), NULL);
return 0;
}
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