| // Copyright 2014 The Crashpad Authors. All rights reserved. |
| // |
| // 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 "util/net/http_body.h" |
| |
| #include <string.h> |
| |
| #include <algorithm> |
| #include <limits> |
| |
| #include "base/check.h" |
| #include "util/misc/implicit_cast.h" |
| |
| namespace crashpad { |
| |
| StringHTTPBodyStream::StringHTTPBodyStream(const std::string& string) |
| : HTTPBodyStream(), string_(string), bytes_read_() { |
| } |
| |
| StringHTTPBodyStream::~StringHTTPBodyStream() { |
| } |
| |
| FileOperationResult StringHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, |
| size_t max_len) { |
| size_t num_bytes_remaining = string_.length() - bytes_read_; |
| if (num_bytes_remaining == 0) { |
| return num_bytes_remaining; |
| } |
| |
| size_t num_bytes_returned = std::min( |
| std::min(num_bytes_remaining, max_len), |
| implicit_cast<size_t>(std::numeric_limits<FileOperationResult>::max())); |
| memcpy(buffer, &string_[bytes_read_], num_bytes_returned); |
| bytes_read_ += num_bytes_returned; |
| return num_bytes_returned; |
| } |
| |
| FileReaderHTTPBodyStream::FileReaderHTTPBodyStream(FileReaderInterface* reader) |
| : HTTPBodyStream(), reader_(reader), reached_eof_(false) { |
| DCHECK(reader_); |
| } |
| |
| FileReaderHTTPBodyStream::~FileReaderHTTPBodyStream() {} |
| |
| FileOperationResult FileReaderHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, |
| size_t max_len) { |
| if (reached_eof_) { |
| return 0; |
| } |
| |
| FileOperationResult rv = reader_->Read(buffer, max_len); |
| if (rv == 0) { |
| reached_eof_ = true; |
| } |
| return rv; |
| } |
| |
| CompositeHTTPBodyStream::CompositeHTTPBodyStream( |
| const CompositeHTTPBodyStream::PartsList& parts) |
| : HTTPBodyStream(), parts_(parts), current_part_(parts_.begin()) { |
| } |
| |
| CompositeHTTPBodyStream::~CompositeHTTPBodyStream() { |
| for (auto& item : parts_) |
| delete item; |
| } |
| |
| FileOperationResult CompositeHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, |
| size_t buffer_len) { |
| FileOperationResult max_len = std::min( |
| buffer_len, |
| implicit_cast<size_t>(std::numeric_limits<FileOperationResult>::max())); |
| FileOperationResult bytes_copied = 0; |
| while (bytes_copied < max_len && current_part_ != parts_.end()) { |
| FileOperationResult this_read = |
| (*current_part_) |
| ->GetBytesBuffer(buffer + bytes_copied, max_len - bytes_copied); |
| |
| if (this_read == 0) { |
| // If the current part has returned 0 indicating EOF, advance the current |
| // part and try again. |
| ++current_part_; |
| } else if (this_read < 0) { |
| return this_read; |
| } |
| bytes_copied += this_read; |
| } |
| |
| return bytes_copied; |
| } |
| |
| } // namespace crashpad |