mirror of
https://github.com/chromium/crashpad.git
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117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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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 <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <algorithm>
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#include <limits>
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#include "base/logging.h"
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#include "base/posix/eintr_wrapper.h"
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#include "base/stl_util.h"
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#include "util/file/fd_io.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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ssize_t StringHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, 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 =
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std::min(std::min(num_bytes_remaining, max_len),
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static_cast<size_t>(std::numeric_limits<ssize_t>::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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FileHTTPBodyStream::FileHTTPBodyStream(const base::FilePath& path)
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: HTTPBodyStream(), path_(path), fd_(kUnopenedFile) {
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}
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FileHTTPBodyStream::~FileHTTPBodyStream() {
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if (fd_ >= 0) {
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LoggingCloseFD(fd_);
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}
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}
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ssize_t FileHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, size_t max_len) {
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switch (fd_) {
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case kUnopenedFile:
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fd_ = HANDLE_EINTR(open(path_.value().c_str(), O_RDONLY));
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if (fd_ < 0) {
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fd_ = kFileOpenError;
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PLOG(ERROR) << "Cannot open " << path_.value();
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return -1;
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}
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break;
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case kFileOpenError:
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return -1;
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case kClosedAtEOF:
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return 0;
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default:
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break;
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}
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ssize_t rv = ReadFD(fd_, buffer, max_len);
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if (rv == 0) {
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LoggingCloseFD(fd_);
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fd_ = kClosedAtEOF;
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} else if (rv < 0) {
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PLOG(ERROR) << "read";
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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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STLDeleteContainerPointers(parts_.begin(), parts_.end());
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}
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ssize_t CompositeHTTPBodyStream::GetBytesBuffer(uint8_t* buffer,
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size_t max_len) {
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if (current_part_ == parts_.end())
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return 0;
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ssize_t rv = (*current_part_)->GetBytesBuffer(buffer, max_len);
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if (rv == 0) {
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// If the current part has returned 0 indicating EOF, advance the current
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// part and call recursively to try again.
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++current_part_;
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return GetBytesBuffer(buffer, max_len);
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}
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return rv;
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}
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} // namespace crashpad
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