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6d4ba21832
Add factory functions to distinguish between when the owner of the File wants to transfer ownership to the new IPC object (adopt) or to send a copy of the same fd to the IPC peer (clone). This behavior is more intuitive than the previous behavior. Previously, an IPC::File would default to a shallow clone of the file descriptor, only *actually* calling dup(2) for the fd when encoding or it into an IPC MessageBuffer. Now the dup(2) for the fd is explicit in the clone_fd factory function.
70 lines
2 KiB
C++
70 lines
2 KiB
C++
/*
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* Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/LexicalPath.h>
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#include <LibCore/File.h>
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#include <LibIPC/Decoder.h>
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#include <LibIPC/Encoder.h>
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#include <LibWeb/HTML/SelectedFile.h>
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namespace Web::HTML {
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ErrorOr<SelectedFile> SelectedFile::from_file_path(ByteString const& file_path)
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{
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// https://html.spec.whatwg.org/multipage/input.html#file-upload-state-(type=file):concept-input-file-path
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// Filenames must not contain path components, even in the case that a user has selected an entire directory
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// hierarchy or multiple files with the same name from different directories.
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auto name = LexicalPath::basename(file_path);
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auto file = TRY(Core::File::open(file_path, Core::File::OpenMode::Read));
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return SelectedFile { move(name), IPC::File::adopt_file(move(file)) };
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}
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SelectedFile::SelectedFile(ByteString name, ByteBuffer contents)
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: m_name(move(name))
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, m_file_or_contents(move(contents))
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{
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}
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SelectedFile::SelectedFile(ByteString name, IPC::File file)
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: m_name(move(name))
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, m_file_or_contents(move(file))
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{
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}
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ByteBuffer SelectedFile::take_contents()
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{
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VERIFY(m_file_or_contents.has<ByteBuffer>());
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return move(m_file_or_contents.get<ByteBuffer>());
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}
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}
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template<>
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ErrorOr<void> IPC::encode(Encoder& encoder, Web::HTML::SelectedFile const& file)
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{
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TRY(encoder.encode(file.name()));
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TRY(encoder.encode(file.file_or_contents()));
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return {};
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}
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template<>
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ErrorOr<Web::HTML::SelectedFile> IPC::decode(Decoder& decoder)
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{
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auto name = TRY(decoder.decode<ByteString>());
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auto file_or_contents = TRY((decoder.decode<Variant<IPC::File, ByteBuffer>>()));
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ByteBuffer contents;
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if (file_or_contents.has<IPC::File>()) {
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auto file = TRY(Core::File::adopt_fd(file_or_contents.get<IPC::File>().take_fd(), Core::File::OpenMode::Read));
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contents = TRY(file->read_until_eof());
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} else {
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contents = move(file_or_contents.get<ByteBuffer>());
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}
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return Web::HTML::SelectedFile { move(name), move(contents) };
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}
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