1 /***************************************************************************
2 * Copyright (C) 2005-2020 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
23 #include "common-export.h"
28 #include <QCommandLineParser>
29 #include <QCoreApplication>
34 #include <QStringList>
36 #include "abstractsignalwatcher.h"
37 #include "singleton.h"
43 class COMMON_EXPORT Quassel : public QObject, public Singleton<Quassel>
45 // TODO Qt5: Use Q_GADGET
58 QString fancyVersionString; // clickable rev
59 QString plainVersionString; // no <a> tag
62 QString generatedVersion;
66 uint protocolVersion; // deprecated
68 QString applicationName;
69 QString coreApplicationName;
70 QString clientApplicationName;
71 QString organizationName;
72 QString organizationDomain;
76 * This enum defines the optional features supported by cores/clients prior to version 0.13.
78 * Since the number of features declared this way is limited to 16 (due to the enum not having a defined
79 * width in cores/clients prior to 0.13), and for more robustness when negotiating features on connect,
80 * the bitfield-based representation was replaced by a string-based representation in 0.13, support for
81 * which is indicated by having the ExtendedFeatures flag set. Extended features are defined in the Feature
84 * @warning Do not alter this enum; new features must be added (only) to the @a Feature enum.
88 enum class LegacyFeature : quint32
90 SynchronizedMarkerLine = 0x0001,
91 SaslAuthentication = 0x0002,
92 SaslExternal = 0x0004,
93 HideInactiveNetworks = 0x0008,
94 PasswordChange = 0x0010,
95 CapNegotiation = 0x0020,
96 VerifyServerSSL = 0x0040,
97 CustomRateLimits = 0x0080,
98 // DccFileTransfer = 0x0100, // never in use
99 AwayFormatTimestamp = 0x0200,
100 Authenticators = 0x0400,
101 BufferActivitySync = 0x0800,
102 CoreSideHighlights = 0x1000,
103 SenderPrefixes = 0x2000,
104 RemoteDisconnect = 0x4000,
105 ExtendedFeatures = 0x8000,
107 Q_FLAGS(LegacyFeature)
108 Q_DECLARE_FLAGS(LegacyFeatures, LegacyFeature)
111 * A list of features that are optional in core and/or client, but need runtime checking.
113 * Some features require an uptodate counterpart, but don't justify a protocol break.
114 * This is what we use this enum for. Add such features to it and check at runtime on the other
115 * side for their existence.
117 * For feature negotiation, these enum values are serialized as strings, so order does not matter. However,
118 * do not rename existing enum values to avoid breaking compatibility.
120 * This list should be cleaned up after every protocol break, as we can assume them to be present then.
122 enum class Feature : uint32_t
124 SynchronizedMarkerLine,
127 HideInactiveNetworks,
128 PasswordChange, ///< Remote password change
129 CapNegotiation, ///< IRCv3 capability negotiation, account tracking
130 VerifyServerSSL, ///< IRC server SSL validation
131 CustomRateLimits, ///< IRC server custom message rate limits
132 AwayFormatTimestamp, ///< Timestamp formatting in away (e.g. %%hh:mm%%)
133 Authenticators, ///< Whether or not the core supports auth backends
134 BufferActivitySync, ///< Sync buffer activity status
135 CoreSideHighlights, ///< Core-Side highlight configuration and matching
136 SenderPrefixes, ///< Show prefixes for senders in backlog
137 RemoteDisconnect, ///< Allow this peer to be remotely disconnected
138 ExtendedFeatures, ///< Extended features
139 LongTime, ///< Serialize time as 64-bit values
140 RichMessages, ///< Real Name and Avatar URL in backlog
141 BacklogFilterType, ///< BacklogManager supports filtering backlog by MessageType
142 EcdsaCertfpKeys, ///< ECDSA keys for CertFP in identities
143 LongMessageId, ///< 64-bit IDs for messages
144 SyncedCoreInfo, ///< CoreInfo dynamically updated using signals
145 LoadBacklogForwards, ///< Allow loading backlog in ascending order, old to new
153 void init(RunMode runMode);
156 * Provides access to the Logger instance.
158 * @returns The Logger instance
160 Logger* logger() const;
162 static void setupBuildInfo();
163 static const BuildInfo& buildInfo();
164 static RunMode runMode();
166 static QString configDirPath();
168 //! Returns a list of data directory paths
169 /** There are several locations for applications to install their data files in. On Unix,
170 * a common location is /usr/share; others include $PREFIX/share and additional directories
171 * specified in the env variable XDG_DATA_DIRS.
172 * \return A list of directory paths to look for data files in
174 static QStringList dataDirPaths();
176 //! Searches for a data file in the possible data directories
177 /** Data files can reside in $DATA_DIR/apps/quassel, where $DATA_DIR is one of the directories
178 * returned by \sa dataDirPaths().
179 * \Note With KDE integration enabled, files are searched (only) in KDE's appdata dirs.
180 * \return The full path to the data file if found; a null QString else
182 static QString findDataFilePath(const QString& filename);
184 static QString translationDirPath();
186 //! Returns a list of directories we look for scripts in
187 /** We look for a subdirectory named "scripts" in the configdir and in all datadir paths.
188 * \return A list of directory paths containing executable scripts for /exec
190 static QStringList scriptDirPaths();
192 static void loadTranslation(const QLocale& locale);
194 static QString optionValue(const QString& option);
195 static bool isOptionSet(const QString& option);
197 using ReloadHandler = std::function<bool()>;
199 static void registerReloadHandler(ReloadHandler handler);
201 using QuitHandler = std::function<void()>;
204 * Registers a handler that is called when the application is supposed to quit.
206 * @note If multiple handlers are registered, they are processed in order of registration.
207 * @note If any handler is registered, quit() will not call QCoreApplication::quit(). It relies
208 * on one of the handlers doing so, instead.
209 * @param quitHandler Handler to register
211 static void registerQuitHandler(QuitHandler quitHandler);
213 const QString& coreDumpFileName();
217 * Requests to quit the application.
219 * Calls any registered quit handlers. If no handlers are registered, calls QCoreApplication::quit().
224 void messageLogged(const QDateTime& timeStamp, const QString& msg);
227 void registerMetaTypes();
228 void setupSignalHandling();
229 void setupEnvironment();
230 void setupCliParser();
233 * Requests a reload of relevant runtime configuration.
235 * Calls any registered reload handlers, and returns the cumulative result. If no handlers are registered,
236 * does nothing and returns true.
238 * @returns True if configuration reload successful, otherwise false
242 void logBacktrace(const QString& filename);
245 void handleSignal(AbstractSignalWatcher::Action action);
248 BuildInfo _buildInfo;
250 bool _quitting{false};
252 QString _coreDumpFileName;
253 QString _configDirPath;
254 QStringList _dataDirPaths;
255 QString _translationDirPath;
257 QCommandLineParser _cliParser;
260 AbstractSignalWatcher* _signalWatcher{nullptr};
262 std::vector<ReloadHandler> _reloadHandlers;
263 std::vector<QuitHandler> _quitHandlers;
266 // --------------------------------------------------------------------------------------------------------------------
269 * Class representing a set of supported core/client features.
271 * @sa Quassel::Feature
273 class COMMON_EXPORT Quassel::Features
277 * Default constructor.
279 * Creates a Feature instance with all known features (i.e., all values declared in the Quassel::Feature enum) set.
280 * This is useful for easily creating a Feature instance that represent the current version's capabilities.
285 * Constructs a Feature instance holding the given list of features.
287 * Both the @a features and the @a legacyFeatures arguments are considered (additively).
288 * This is useful when receiving a list of features from another peer.
290 * @param features A list of strings matching values in the Quassel::Feature enum. Strings that don't match are
291 * can be accessed after construction via unknownFeatures(), but are otherwise ignored.
292 * @param legacyFeatures Holds a bit-wise combination of LegacyFeature flag values, which are each added to the list of
293 * features represented by this Features instance.
295 Features(const QStringList& features, LegacyFeatures legacyFeatures);
298 * Check if a given feature is marked as enabled in this Features instance.
300 * @param feature The feature to be queried
301 * @returns Whether the given feature is marked as enabled
303 bool isEnabled(Feature feature) const;
306 * Provides a list of all features marked as either enabled or disabled (as indicated by the @a enabled argument) as strings.
308 * @param enabled Whether to return the enabled or the disabled features
309 * @return A string list containing all enabled or disabled features
311 QStringList toStringList(bool enabled = true) const;
314 * Provides a list of all enabled legacy features (i.e. features defined prior to v0.13) as bit-wise combination in a
315 * LegacyFeatures type.
317 * @note Extended features cannot be represented this way, and are thus ignored even if set.
318 * @return A LegacyFeatures type holding the bit-wise combination of all legacy features enabled in this Features instance
320 LegacyFeatures toLegacyFeatures() const;
323 * Provides the list of strings that could not be mapped to Quassel::Feature enum values on construction.
325 * Useful for debugging/logging purposes.
327 * @returns A list of strings that could not be mapped to the Feature enum on construction of this Features instance, if any
329 QStringList unknownFeatures() const;
332 std::vector<bool> _features;
333 QStringList _unknownFeatures;