1 /***************************************************************************
2 * Copyright (C) 2005-09 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 *
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17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
27 #include "coreidentity.h"
31 class Storage : public QObject {
35 Storage(QObject *parent = 0);
36 virtual ~Storage() {};
41 //! Check if the storage type is available.
42 /** A storage subclass should return true if it can be successfully used, i.e. if all
43 * prerequisites are in place (e.g. we have an appropriate DB driver etc.).
44 * \return True if and only if the storage class can be successfully used.
46 virtual bool isAvailable() const = 0;
48 //! Returns the display name of the storage backend
49 /** \return A string that can be used by the client to name the storage backend */
50 virtual QString displayName() const = 0;
52 //! Returns a description of this storage backend
53 /** \return A string that can be displayed by the client to describe the storage backend */
54 virtual QString description() const = 0;
56 //! Setup the storage provider.
57 /** This prepares the storage provider (e.g. create tables, etc.) for use within Quassel.
58 * \param settings Hostname, port, username, password, ...
59 * \return True if and only if the storage provider was initialized successfully.
61 virtual bool setup(const QVariantMap &settings = QVariantMap()) = 0;
63 //! Initialize the storage provider
64 /** \param settings Hostname, port, username, password, ...
65 * \return True if and only if the storage provider was initialized successfully.
67 virtual bool init(const QVariantMap &settings = QVariantMap()) = 0;
69 //! Makes temp data persistent
70 /** This Method is periodically called by the Quassel Core to make temporary
71 * data persistant. This reduces the data loss drastically in the
72 * unlikely case of a Core crash.
74 virtual void sync() = 0;
76 // TODO: Add functions for configuring the backlog handling, i.e. defining auto-cleanup settings etc
80 //! Add a new core user to the storage.
81 /** \param user The username of the new user
82 * \param password The cleartext password for the new user
83 * \return The new user's UserId
85 virtual UserId addUser(const QString &user, const QString &password) = 0;
87 //! Update a core user's password.
88 /** \param user The user's id
89 * \param password The user's new password
91 virtual void updateUser(UserId user, const QString &password) = 0;
94 /** \param user The user's id
95 * \param newName The user's new name
97 virtual void renameUser(UserId user, const QString &newName) = 0;
99 //! Validate a username with a given password.
100 /** \param user The username to validate
101 * \param password The user's alleged password
102 * \return A valid UserId if the password matches the username; 0 else
104 virtual UserId validateUser(const QString &user, const QString &password) = 0;
106 //! Determine the UserId of the internal user
107 /** \return A valid UserId if the password matches the username; 0 else
109 virtual UserId internalUser() = 0;
111 //! Remove a core user from storage.
112 /** \param user The userid to delete
114 virtual void delUser(UserId user) = 0;
116 //! Store a user setting persistently
118 * \param userId The users Id
119 * \param settingName The Name of the Setting
120 * \param data The Value
122 virtual void setUserSetting(UserId userId, const QString &settingName, const QVariant &data) = 0;
124 //! Retrieve a persistent user setting
126 * \param userId The users Id
127 * \param settingName The Name of the Setting
128 * \param default Value to return in case it's unset.
129 * \return the Value of the Setting or the default value if it is unset.
131 virtual QVariant getUserSetting(UserId userId, const QString &settingName, const QVariant &data = QVariant()) = 0;
133 /* Identity handling */
134 virtual IdentityId createIdentity(UserId user, CoreIdentity &identity) = 0;
135 virtual bool updateIdentity(UserId user, const CoreIdentity &identity) = 0;
136 virtual void removeIdentity(UserId user, IdentityId identityId) = 0;
137 virtual QList<CoreIdentity> identities(UserId user) = 0;
139 /* Network handling */
141 //! Create a new Network in the storage backend and return it unique Id
142 /** \param user The core user who owns this network
143 * \param networkInfo The networkInfo holding the network definition
144 * \return the NetworkId of the newly created Network. Possibly invalid.
146 virtual NetworkId createNetwork(UserId user, const NetworkInfo &info) = 0;
148 //! Apply the changes to NetworkInfo info to the storage engine
150 * \param user The core user
151 * \param networkInfo The Updated NetworkInfo
152 * \return true if successfull.
154 virtual bool updateNetwork(UserId user, const NetworkInfo &info) = 0;
156 //! Permanently remove a Network and all the data associated with it.
157 /** \note This method is thredsafe.
159 * \param user The core user
160 * \param networkId The network to delete
161 * \return true if successfull.
163 virtual bool removeNetwork(UserId user, const NetworkId &networkId) = 0;
165 //! Returns a list of all NetworkInfos for the given UserId user
166 /** \note This method is thredsafe.
168 * \param user The core user
169 * \return QList<NetworkInfo>.
171 virtual QList<NetworkInfo> networks(UserId user) = 0;
173 //! Get the unique NetworkId of the network for a user.
174 /** \param user The core user who owns this network
175 * \param network The network name
176 * \return The NetworkId corresponding to the given network, or 0 if not found
178 virtual NetworkId getNetworkId(UserId user, const QString &network) = 0;
180 //! Get a list of Networks to restore
181 /** Return a list of networks the user was connected at the time of core shutdown
182 * \note This method is threadsafe.
184 * \param user The User Id in question
186 virtual QList<NetworkId> connectedNetworks(UserId user) = 0;
188 //! Update the connected state of a network
189 /** \note This method is threadsafe
191 * \param user The Id of the networks owner
192 * \param networkId The Id of the network
193 * \param isConnected whether the network is connected or not
195 virtual void setNetworkConnected(UserId user, const NetworkId &networkId, bool isConnected) = 0;
197 //! Get a hash of channels with their channel keys for a given network
198 /** The keys are channel names and values are passwords (possibly empty)
199 * \note This method is threadsafe
201 * \param user The id of the networks owner
202 * \param networkId The Id of the network
204 virtual QHash<QString, QString> persistentChannels(UserId user, const NetworkId &networkId) = 0;
206 //! Update the connected state of a channel
207 /** \note This method is threadsafe
209 * \param user The Id of the networks owner
210 * \param networkId The Id of the network
211 * \param channel The name of the channel
212 * \param isJoined whether the channel is connected or not
214 virtual void setChannelPersistent(UserId user, const NetworkId &networkId, const QString &channel, bool isJoined) = 0;
216 //! Update the key of a channel
217 /** \note This method is threadsafe
219 * \param user The Id of the networks owner
220 * \param networkId The Id of the network
221 * \param channel The name of the channel
222 * \param key The key of the channel (possibly empty)
224 virtual void setPersistentChannelKey(UserId user, const NetworkId &networkId, const QString &channel, const QString &key) = 0;
226 /* Buffer handling */
228 //! Get the unique BufferInfo for the given combination of network and buffername for a user.
229 /** \param user The core user who owns this buffername
230 * \param networkId The network id
231 * \param type The type of the buffer (StatusBuffer, Channel, etc.)
232 * \param buffer The buffer name (if empty, the net's status buffer is returned)
233 * \param create Whether or not the buffer should be created if it doesnt exist
234 * \return The BufferInfo corresponding to the given network and buffer name, or an invalid BufferInfo if not found
236 virtual BufferInfo bufferInfo(UserId user, const NetworkId &networkId, BufferInfo::Type type, const QString &buffer = "", bool create = true) = 0;
238 //! Get the unique BufferInfo for a bufferId
239 /** \param user The core user who owns this buffername
240 * \param bufferId The id of the buffer
241 * \return The BufferInfo corresponding to the given buffer id, or an invalid BufferInfo if not found.
243 virtual BufferInfo getBufferInfo(UserId user, const BufferId &bufferId) = 0;
245 //! Request a list of all buffers known to a user.
246 /** This method is used to get a list of all buffers we have stored a backlog from.
247 * \param user The user whose buffers we request
248 * \return A list of the BufferInfos for all buffers as requested
250 virtual QList<BufferInfo> requestBuffers(UserId user) = 0;
252 //! Request a list of BufferIds for a given NetworkId
253 /** \note This method is threadsafe.
255 * \param user The user whose buffers we request
256 * \param networkId The NetworkId of the network in question
257 * \return List of BufferIds belonging to the Network
259 virtual QList<BufferId> requestBufferIdsForNetwork(UserId user, NetworkId networkId) = 0;
261 //! Remove permanently a buffer and it's content from the storage backend
262 /** This call cannot be reverted!
263 * \param user The user who is the owner of the buffer
264 * \param bufferId The bufferId
265 * \return true if successfull
267 virtual bool removeBuffer(const UserId &user, const BufferId &bufferId) = 0;
271 /** \note This method is threadsafe.
272 * \param user The id of the buffer owner
273 * \param bufferId The bufferId
274 * \param newName The new name of the buffer
275 * \return true if successfull
277 virtual bool renameBuffer(const UserId &user, const BufferId &bufferId, const QString &newName) = 0;
279 //! Merge the content of two Buffers permanently. This cannot be reversed!
280 /** \note This method is threadsafe.
281 * \param user The id of the buffer owner
282 * \param bufferId1 The bufferId of the remaining buffer
283 * \param bufferId2 The buffer that is about to be removed
284 * \return true if successfull
286 virtual bool mergeBuffersPermanently(const UserId &user, const BufferId &bufferId1, const BufferId &bufferId2) = 0;
288 //! Update the LastSeenDate for a Buffer
289 /** This Method is used to make the LastSeenDate of a Buffer persistent
290 * \param user The Owner of that Buffer
291 * \param bufferId The buffer id
292 * \param MsgId The Message id of the message that has been just seen
294 virtual void setBufferLastSeenMsg(UserId user, const BufferId &bufferId, const MsgId &msgId) = 0;
296 //! Get a Hash of all last seen message ids
297 /** This Method is called when the Quassel Core is started to restore the lastSeenMsgIds
298 * \param user The Owner of the buffers
300 virtual QHash<BufferId, MsgId> bufferLastSeenMsgIds(UserId user) = 0;
303 /* Message handling */
305 //! Store a Message in the backlog.
306 /** \param msg The message object to be stored
307 * \return The globally unique id for the stored message
309 virtual MsgId logMessage(Message msg) = 0;
311 //! Request a certain number messages stored in a given buffer.
312 /** \param buffer The buffer we request messages from
313 * \param first if != -1 return only messages with a MsgId >= first
314 * \param last if != -1 return only messages with a MsgId < last
315 * \param limit if != -1 limit the returned list to a max of \limit entries
316 * \return The requested list of messages
318 virtual QList<Message> requestMsgs(UserId user, BufferId bufferId, MsgId first = -1, MsgId last = -1, int limit = -1) = 0;
320 //! Request a certain number of messages across all buffers
321 /** \param first if != -1 return only messages with a MsgId >= first
322 * \param last if != -1 return only messages with a MsgId < last
323 * \param limit Max amount of messages
324 * \return The requested list of messages
326 virtual QList<Message> requestAllMsgs(UserId user, MsgId first = -1, MsgId last = -1, int limit = -1) = 0;
329 //! Sent when a new BufferInfo is created, or an existing one changed somehow.
330 void bufferInfoUpdated(UserId user, const BufferInfo &);
331 //! Sent when a Buffer was renamed
332 void bufferRenamed(const QString &newName, const QString &oldName);
333 //! Sent when a new user has been added
334 void userAdded(UserId, const QString &username);
335 //! Sent when a user has been renamed
336 void userRenamed(UserId, const QString &newname);
337 //! Sent when a user has been removed
338 void userRemoved(UserId);
341 //! when implementing a storage handler, use this method to crypt user passwords.
342 /** This guarantees compatibility with other storage handlers and allows easy migration
344 QString cryptedPassword(const QString &password);