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fix(libarchive): use multibyte encoding aware libarchive functions when dealing with filenames

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Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>
This commit is contained in:
Rachel Powers
2025-12-08 20:11:53 -07:00
parent 2e3097d5ca
commit 87286fa6a3
2 changed files with 60 additions and 20 deletions
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68
launcher/archive/ArchiveWriter.cpp
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@@ -25,6 +25,16 @@
#include <memory>
#if defined Q_OS_WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
// clang-format off
#include <windows.h>
#include <fileapi.h>
// clang-format on
#endif
namespace MMCZip {
ArchiveWriter::ArchiveWriter(const QString& archiveName) : m_filename(archiveName) {}
@@ -55,8 +65,8 @@ bool ArchiveWriter::open()
return false;
}
auto archiveNameUtf8 = m_filename.toUtf8();
if (archive_write_open_filename(m_archive, archiveNameUtf8.constData()) != ARCHIVE_OK) {
auto archiveNameW = m_filename.toStdWString();
if (archive_write_open_filename_w(m_archive, archiveNameW.data()) != ARCHIVE_OK) {
qCritical() << "Failed to open archive file:" << m_filename << "-" << archive_error_string(m_archive);
return false;
}
@@ -97,16 +107,46 @@ bool ArchiveWriter::addFile(const QString& fileName, const QString& fileDest)
}
auto fileDestUtf8 = fileDest.toUtf8();
archive_entry_set_pathname(entry, fileDestUtf8.constData());
archive_entry_set_pathname_utf8(entry, fileDestUtf8.constData());
QByteArray utf8 = fileInfo.absoluteFilePath().toUtf8();
const char* cpath = utf8.constData();
struct stat st;
if (stat(cpath, &st) != 0) {
qCritical() << "Failed to stat file:" << fileInfo.filePath();
#if defined Q_OS_WIN32
{
// Windows needs to use this method, thanks I hate it.
auto widePath = fileInfo.absoluteFilePath().toStdWString();
HANDLE file_handle = CreateFileW(widePath.data(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (file_handle == INVALID_HANDLE_VALUE) {
qCritical() << "Failed to stat file:" << fileInfo.filePath();
return false;
}
BY_HANDLE_FILE_INFORMATION file_info;
if (!GetFileInformationByHandle(file_handle, &file_info)) {
qCritical() << "Failed to stat file:" << fileInfo.filePath();
CloseHandle(file_handle);
return false;
}
archive_entry_copy_bhfi(entry, &file_info);
CloseHandle(file_handle);
}
// This should handle the copying of most attributes
archive_entry_copy_stat(entry, &st);
#else
{
// this only works for myltibyte encoded filenames if the local is properly set,
// a wide charater version doens't seem to exist: here's hopeing...
QByteArray utf8 = fileInfo.absoluteFilePath().toUtf8();
const char* cpath = utf8.constData();
struct stat st;
if (stat(cpath, &st) != 0) {
qCritical() << "Failed to stat file:" << fileInfo.filePath();
return false;
}
// This should handle the copying of most attributes
archive_entry_copy_stat(entry, &st);
}
#endif
// However:
// "The [filetype] constants used by stat(2) may have different numeric values from the corresponding [libarchive constants]."
@@ -116,11 +156,11 @@ bool ArchiveWriter::addFile(const QString& fileName, const QString& fileDest)
// We also need to manually copy some attributes from the link itself, as `stat` above operates on its target
auto target = fileInfo.symLinkTarget().toUtf8();
archive_entry_set_symlink(entry, target.constData());
archive_entry_set_symlink_utf8(entry, target.constData());
archive_entry_set_size(entry, 0);
archive_entry_set_perm(entry, fileInfo.permissions());
} else if (fileInfo.isFile()) {
archive_entry_set_filetype(entry, AE_IFREG);
archive_entry_set_filetype(entry, AE_IFREG);
} else {
qCritical() << "Unsupported file type:" << fileInfo.filePath();
return false;
@@ -169,7 +209,7 @@ bool ArchiveWriter::addFile(const QString& fileDest, const QByteArray& data)
}
auto fileDestUtf8 = fileDest.toUtf8();
archive_entry_set_pathname(entry, fileDestUtf8.constData());
archive_entry_set_pathname_utf8(entry, fileDestUtf8.constData());
archive_entry_set_perm(entry, 0644);
archive_entry_set_filetype(entry, AE_IFREG);
@@ -210,4 +250,4 @@ std::unique_ptr<archive, void (*)(archive*)> ArchiveWriter::createDiskWriter()
return extPtr;
}
} // namespace MMCZip
} // namespace MMCZip