blob: 4acacea725357fb88237c2f163e4059b695e2e67 [file] [log] [blame]
// 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