kleopatra/utils/gnupg-helper.cpp

   1 /* -*- mode: c++; c-basic-offset:4 -*-
   2     utils/gnupg-helper.cpp
   3
   4     This file is part of Kleopatra, the KDE keymanager
   5     Copyright (c) 2008 Klarälvdalens Datakonsult AB
   6
   7     Kleopatra is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     Kleopatra is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  20
  21     In addition, as a special exception, the copyright holders give
  22     permission to link the code of this program with any edition of
  23     the Qt library by Trolltech AS, Norway (or with modified versions
  24     of Qt that use the same license as Qt), and distribute linked
  25     combinations including the two.  You must obey the GNU General
  26     Public License in all respects for all of the code used other than
  27     Qt.  If you modify this file, you may extend this exception to
  28     your version of the file, but you are not obligated to do so.  If
  29     you do not wish to do so, delete this exception statement from
  30     your version.
  31 */
  32
  33 #include <config-kleopatra.h>
  34
  35 #include "gnupg-helper.h"
  36
  37 #include "utils/hex.h"
  38
  39 #include <gpgme++/engineinfo.h>
  40
  41 #include "kleopatra_debug.h"
  42
  43 #include <QDir>
  44 #include <QFile>
  45 #include <QString>
  46 #include <QProcess>
  47 #include <QByteArray>
  48 #include <QStandardPaths>
  49 #include <gpg-error.h>
  50
  51 #ifdef Q_OS_WIN
  52 #include "gnupg-registry.h"
  53 #endif // Q_OS_WIN
  54
  55 QString Kleo::gnupgHomeDirectory()
  56 {
  57 #ifdef Q_OS_WIN
  58     return QFile::decodeName(default_homedir());
  59 #else
  60     const QByteArray gnupgHome = qgetenv("GNUPGHOME");
  61     if (!gnupgHome.isEmpty()) {
  62         return QFile::decodeName(gnupgHome);
  63     } else {
  64         return QDir::homePath() + QLatin1String("/.gnupg");
  65     }
  66 #endif
  67 }
  68
  69 int Kleo::makeGnuPGError(int code)
  70 {
  71     return gpg_error(static_cast<gpg_err_code_t>(code));
  72 }
  73
  74 static QString findGpgExe(GpgME::Engine engine, const QString &exe)
  75 {
  76     const GpgME::EngineInfo info = GpgME::engineInfo(engine);
  77     return info.fileName() ? QFile::decodeName(info.fileName()) : QStandardPaths::findExecutable(exe);
  78 }
  79
  80 QString Kleo::gpgConfPath()
  81 {
  82     return findGpgExe(GpgME::GpgConfEngine, QStringLiteral("gpgconf"));
  83 }
  84
  85 QString Kleo::gpgSmPath()
  86 {
  87     return findGpgExe(GpgME::GpgSMEngine, QStringLiteral("gpgsm"));
  88 }
  89
  90 QString Kleo::gpgPath()
  91 {
  92     return findGpgExe(GpgME::GpgEngine, QStringLiteral("gpg"));
  93 }
  94
  95 QStringList Kleo::gnupgFileBlacklist()
  96 {
  97     return QStringList()
  98            << QStringLiteral("dirmngr-cache.d")
  99            << QStringLiteral("S.uiserver")
 100            << QStringLiteral("S.gpg-agent")
 101            << QStringLiteral("random_seed")
 102            << QStringLiteral("*~")
 103            << QStringLiteral("*.bak")
 104            << QStringLiteral("*.lock")
 105            << QStringLiteral("*.tmp")
 106            << QStringLiteral("reader_*.status")
 107            ;
 108 }
 109
 110 QString Kleo::gpg4winInstallPath()
 111 {
 112     return gpgConfListDir("bindir");
 113 }
 114
 115 QString Kleo::gpgConfListDir(const char *which)
 116 {
 117     if (!which || !*which) {
 118         return QString();
 119     }
 120     const QString gpgConfPath = Kleo::gpgConfPath();
 121     if (gpgConfPath.isEmpty()) {
 122         return QString();
 123     }
 124     QProcess gpgConf;
 125     qCDebug(KLEOPATRA_LOG) << "gpgConfListDir: starting " << qPrintable(gpgConfPath) << " --list-dirs";
 126     gpgConf.start(gpgConfPath, QStringList() << QStringLiteral("--list-dirs"));
 127     if (!gpgConf.waitForFinished()) {
 128         qCDebug(KLEOPATRA_LOG) << "gpgConfListDir(): failed to execute gpgconf: " << qPrintable(gpgConf.errorString());
 129         qCDebug(KLEOPATRA_LOG) << "output was:" << endl << gpgConf.readAllStandardError().constData();
 130         return QString();
 131     }
 132     const QList<QByteArray> lines = gpgConf.readAllStandardOutput().split('\n');
 133     Q_FOREACH (const QByteArray &line, lines)
 134         if (line.startsWith(which) && line[qstrlen(which)] == ':') {
 135             const int begin = qstrlen(which) + 1;
 136             int end = line.size();
 137             while (end && (line[end - 1] == '\n' || line[end - 1] == '\r')) {
 138                 --end;
 139             }
 140             const QString result = QDir::fromNativeSeparators(QFile::decodeName(hexdecode(line.mid(begin, end - begin))));
 141             qCDebug(KLEOPATRA_LOG) << "gpgConfListDir: found " << qPrintable(result)
 142                                    << " for '" << which << "'entry";
 143             return result;
 144         }
 145     qCDebug(KLEOPATRA_LOG) << "gpgConfListDir(): didn't find '" << which << "'"
 146                            << "entry in output:" << endl << gpgConf.readAllStandardError().constData();
 147     return QString();
 148 }