| /* |
| * Copyright (C) 2017 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 "native_dex_file.h" |
| |
| namespace art { |
| |
| const uint8_t NativeDexFile::kDexMagic[] = { 'd', 'e', 'x', '\n' }; |
| const uint8_t NativeDexFile::kDexMagicVersions[NativeDexFile::kNumDexVersions] |
| [NativeDexFile::kDexVersionLen] = { |
| {'0', '3', '5', '\0'}, |
| // Dex version 036 skipped because of an old dalvik bug on some versions of android where dex |
| // files with that version number would erroneously be accepted and run. |
| {'0', '3', '7', '\0'}, |
| // Dex version 038: Android "O" and beyond. |
| {'0', '3', '8', '\0'}, |
| // Dex verion 039: Beyond Android "O". |
| {'0', '3', '9', '\0'}, |
| }; |
| |
| bool NativeDexFile::IsMagicValid(const uint8_t* magic) { |
| return (memcmp(magic, kDexMagic, sizeof(kDexMagic)) == 0); |
| } |
| |
| bool NativeDexFile::IsVersionValid(const uint8_t* magic) { |
| const uint8_t* version = &magic[sizeof(kDexMagic)]; |
| for (uint32_t i = 0; i < kNumDexVersions; i++) { |
| if (memcmp(version, kDexMagicVersions[i], kDexVersionLen) == 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool NativeDexFile::IsMagicValid() const { |
| return IsMagicValid(header_->magic_); |
| } |
| |
| bool NativeDexFile::IsVersionValid() const { |
| return IsVersionValid(header_->magic_); |
| } |
| |
| } // namespace art |