ce5e56e243
Use Google3 naming style to match new projects' and open source google projects' style. Preferred to do this in a massive CL so as to avoid style inconsistencies that plague legacy code bases. This is a relatively NEW code base, may as well keep it up to date. Test: name/style refactor - existing tests pass Change-Id: Ie80ecb78d46ec53efdfca2336bb57d96cbb7fb87
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "unflatten/ResChunkPullParser.h"
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#include <cstddef>
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#include "android-base/logging.h"
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#include "androidfw/ResourceTypes.h"
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#include "util/Util.h"
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namespace aapt {
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using android::ResChunk_header;
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ResChunkPullParser::Event ResChunkPullParser::Next() {
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if (!IsGoodEvent(event_)) {
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return event_;
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}
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if (event_ == Event::kStartDocument) {
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current_chunk_ = data_;
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} else {
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current_chunk_ =
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(const ResChunk_header*)(((const char*)current_chunk_) +
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util::DeviceToHost32(current_chunk_->size));
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}
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const std::ptrdiff_t diff = (const char*)current_chunk_ - (const char*)data_;
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CHECK(diff >= 0) << "diff is negative";
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const size_t offset = static_cast<const size_t>(diff);
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if (offset == len_) {
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current_chunk_ = nullptr;
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return (event_ = Event::kEndDocument);
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} else if (offset + sizeof(ResChunk_header) > len_) {
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error_ = "chunk is past the end of the document";
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current_chunk_ = nullptr;
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return (event_ = Event::kBadDocument);
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}
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if (util::DeviceToHost16(current_chunk_->headerSize) <
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sizeof(ResChunk_header)) {
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error_ = "chunk has too small header";
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current_chunk_ = nullptr;
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return (event_ = Event::kBadDocument);
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} else if (util::DeviceToHost32(current_chunk_->size) <
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util::DeviceToHost16(current_chunk_->headerSize)) {
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error_ = "chunk's total size is smaller than header";
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current_chunk_ = nullptr;
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return (event_ = Event::kBadDocument);
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} else if (offset + util::DeviceToHost32(current_chunk_->size) > len_) {
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error_ = "chunk's data extends past the end of the document";
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current_chunk_ = nullptr;
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return (event_ = Event::kBadDocument);
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}
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return (event_ = Event::kChunk);
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}
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} // namespace aapt
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