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Diffstat (limited to 'lang/qt/src/util.cpp')
| -rw-r--r-- | lang/qt/src/util.cpp | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/lang/qt/src/util.cpp b/lang/qt/src/util.cpp deleted file mode 100644 index 51ae9589..00000000 --- a/lang/qt/src/util.cpp +++ /dev/null @@ -1,173 +0,0 @@ -/* - util.cpp - - This file is part of qgpgme, the Qt API binding for gpgme - Copyright (c) 2022 g10 Code GmbH - Software engineering by Ingo Klöcker <[email protected]> - - QGpgME is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - QGpgME is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - - In addition, as a special exception, the copyright holders give - permission to link the code of this program with any edition of - the Qt library by Trolltech AS, Norway (or with modified versions - of Qt that use the same license as Qt), and distribute linked - combinations including the two. You must obey the GNU General - Public License in all respects for all of the code used other than - Qt. If you modify this file, you may extend this exception to - your version of the file, but you are not obligated to do so. If - you do not wish to do so, delete this exception statement from - your version. -*/ - -#ifdef HAVE_CONFIG_H - #include "config.h" -#endif - -#include "util.h" - -#include "cleaner.h" -#include "qgpgme_debug.h" - -#include <QFile> -#include <QFileInfo> -#include <QRandomGenerator> - -#include <gpgme++/key.h> - -#include <algorithm> -#include <functional> - -std::vector<std::string> toStrings(const QStringList &l) -{ - std::vector<std::string> v; - v.reserve(l.size()); - std::transform(std::begin(l), std::end(l), - std::back_inserter(v), - std::mem_fn(&QString::toStdString)); - return v; -} - -QStringList toFingerprints(const std::vector<GpgME::Key> &keys) -{ - QStringList fprs; - fprs.reserve(keys.size()); - std::transform(std::begin(keys), std::end(keys), std::back_inserter(fprs), [](const GpgME::Key &k) { - return QString::fromLatin1(k.primaryFingerprint()); - }); - return fprs; -} - -/** - * Generates a string of random characters for the file names of temporary files. - * Never use this for generating passwords or similar use cases requiring highly - * secure random data. - */ -static QString getRandomCharacters(const int count) -{ - if (count < 0) { - return {}; - } - - QString randomChars; - randomChars.reserve(count); - - do { - // get a 32-bit random number to generate up to 5 random characters from - // the set {A-Z, a-z, 0-9}; set the highest bit for the break condition - for (quint32 rnd = QRandomGenerator::global()->generate() | (1 << 31); rnd > 3; rnd = rnd >> 6) - { - // take the last 6 bits; ignore 62 and 63 - const char ch = rnd & ((1 << 6) - 1); - if (ch < 26) { - randomChars += QLatin1Char(ch + 'A'); - } else if (ch < 26 + 26) { - randomChars += QLatin1Char(ch - 26 + 'a'); - } else if (ch < 26 + 26 + 10) { - randomChars += QLatin1Char(ch - 26 - 26 + '0'); - } - if (randomChars.size() >= count) { - break; - } - } - } while (randomChars.size() < count); - - return randomChars; -} - -/** - * Creates a temporary file name with extension \c .part for the given file name - * \a fileName. The function makes sure that the created file name is not in use - * at the time the file name is chosen. - * - * Example: For the file name "this.is.an.archive.tar.gpg" the temporary file name - * "this.YHgf2tEl.is.an.archive.tar.gpg.part" could be returned. - */ -static QString createPartFileName(const QString &fileName) -{ - static const int maxAttempts = 10; - - const QFileInfo fi{fileName}; - const QString path = fi.path(); // path without trailing '/' - const QString baseName = fi.baseName(); - const QString suffix = fi.completeSuffix(); - for (int attempt = 0; attempt < maxAttempts; ++attempt) { - const QString candidate = (path + QLatin1Char('/') - + baseName + QLatin1Char('.') - + getRandomCharacters(8) + QLatin1Char('.') - + suffix - + QLatin1String(".part")); - if (!QFile::exists(candidate)) { - return candidate; - } - } - - qCWarning(QGPGME_LOG) << __func__ << "- Failed to create temporary file name for" << fileName; - return {}; -} - -PartialFileGuard::PartialFileGuard(const QString &fileName) - : mFileName{fileName} - , mTempFileName{createPartFileName(fileName)} -{ - qCDebug(QGPGME_LOG) << __func__ << "- Using temporary file name" << mTempFileName; -} - -PartialFileGuard::~PartialFileGuard() -{ - if (!mTempFileName.isEmpty()) { - Cleaner::removeFile(mTempFileName); - } -} - -QString PartialFileGuard::tempFileName() const -{ - return mTempFileName; -} - -bool PartialFileGuard::commit() -{ - if (mTempFileName.isEmpty()) { - qCWarning(QGPGME_LOG) << "PartialFileGuard::commit: Called more than once"; - return false; - } - const bool success = QFile::rename(mTempFileName, mFileName); - if (success) { - qCDebug(QGPGME_LOG) << __func__ << "- Renamed" << mTempFileName << "to" << mFileName; - mTempFileName.clear(); - } else { - qCDebug(QGPGME_LOG) << __func__ << "- Renaming" << mTempFileName << "to" << mFileName << "failed"; - } - return success; -} |