1 /* 2 * Copyright (C) 2011 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 #ifndef ART_RUNTIME_DEX_FILE_VERIFIER_H_ 18 #define ART_RUNTIME_DEX_FILE_VERIFIER_H_ 19 20 #include "dex_file.h" 21 #include "safe_map.h" 22 23 namespace art { 24 25 class DexFileVerifier { 26 public: 27 static bool Verify(const DexFile* dex_file, const byte* begin, size_t size); 28 29 private: 30 DexFileVerifier(const DexFile* dex_file, const byte* begin, size_t size) 31 : dex_file_(dex_file), begin_(begin), size_(size), 32 header_(&dex_file->GetHeader()), ptr_(NULL), previous_item_(NULL) { 33 } 34 35 bool Verify(); 36 37 bool CheckPointerRange(const void* start, const void* end, const char* label) const; 38 bool CheckListSize(const void* start, uint32_t count, uint32_t element_size, const char* label) const; 39 bool CheckIndex(uint32_t field, uint32_t limit, const char* label) const; 40 41 bool CheckHeader() const; 42 bool CheckMap() const; 43 44 uint32_t ReadUnsignedLittleEndian(uint32_t size); 45 bool CheckAndGetHandlerOffsets(const DexFile::CodeItem* code_item, 46 uint32_t* handler_offsets, uint32_t handlers_size); 47 bool CheckClassDataItemField(uint32_t idx, uint32_t access_flags, bool expect_static) const; 48 bool CheckClassDataItemMethod(uint32_t idx, uint32_t access_flags, uint32_t code_offset, 49 bool expect_direct) const; 50 bool CheckPadding(uint32_t offset, uint32_t aligned_offset); 51 bool CheckEncodedValue(); 52 bool CheckEncodedArray(); 53 bool CheckEncodedAnnotation(); 54 55 bool CheckIntraClassDataItem(); 56 bool CheckIntraCodeItem(); 57 bool CheckIntraStringDataItem(); 58 bool CheckIntraDebugInfoItem(); 59 bool CheckIntraAnnotationItem(); 60 bool CheckIntraAnnotationsDirectoryItem(); 61 62 bool CheckIntraSectionIterate(uint32_t offset, uint32_t count, uint16_t type); 63 bool CheckIntraIdSection(uint32_t offset, uint32_t count, uint16_t type); 64 bool CheckIntraDataSection(uint32_t offset, uint32_t count, uint16_t type); 65 bool CheckIntraSection(); 66 67 bool CheckOffsetToTypeMap(uint32_t offset, uint16_t type); 68 uint16_t FindFirstClassDataDefiner(const byte* ptr) const; 69 uint16_t FindFirstAnnotationsDirectoryDefiner(const byte* ptr) const; 70 71 bool CheckInterStringIdItem(); 72 bool CheckInterTypeIdItem(); 73 bool CheckInterProtoIdItem(); 74 bool CheckInterFieldIdItem(); 75 bool CheckInterMethodIdItem(); 76 bool CheckInterClassDefItem(); 77 bool CheckInterAnnotationSetRefList(); 78 bool CheckInterAnnotationSetItem(); 79 bool CheckInterClassDataItem(); 80 bool CheckInterAnnotationsDirectoryItem(); 81 82 bool CheckInterSectionIterate(uint32_t offset, uint32_t count, uint16_t type); 83 bool CheckInterSection(); 84 85 const DexFile* dex_file_; 86 const byte* begin_; 87 size_t size_; 88 const DexFile::Header* header_; 89 90 SafeMap<uint32_t, uint16_t> offset_to_type_map_; 91 const byte* ptr_; 92 const void* previous_item_; 93 }; 94 95 } // namespace art 96 97 #endif // ART_RUNTIME_DEX_FILE_VERIFIER_H_ 98
