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