X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fstorage.h;h=4252059c524e9576eb67ad2ed462b2181531de8b;hp=d143443fab5c77b2c13daab86aa244c11899b512;hb=e0464aa399c32231e5cc7879f8910c3ccd3b45e3;hpb=0ac9ce4d7cf768d13993d6aa1d6b791c4149a843 diff --git a/src/core/storage.h b/src/core/storage.h index d143443f..4252059c 100644 --- a/src/core/storage.h +++ b/src/core/storage.h @@ -1,11 +1,11 @@ /*************************************************************************** - * Copyright (C) 2005-07 by The Quassel Team * + * Copyright (C) 2005-08 by the Quassel Project * * devel@quassel-irc.org * * * * This program 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. * + * (at your option) version 3. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * @@ -18,156 +18,334 @@ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ -#ifndef _STORAGE_H_ -#define _STORAGE_H_ +#ifndef STORAGE_H +#define STORAGE_H #include -#include -//#include "global.h" +#include "types.h" #include "message.h" +#include "network.h" class Storage : public QObject { Q_OBJECT public: - Storage() {}; - virtual ~Storage() {}; - - //! Initialize the static parts of the storage class - /** This is called by the core before any other method of the storage backend is used. - * This should be used to perform any static initialization that might be necessary. - * DO NOT use this for creating database connection or similar stuff, since init() might be - * called even if the storage backend is never be actually used (because no user selected it). - * For anything like this, the constructor (which is called if and when we actually create an instance - * of the storage backend) is the right place. - */ - static void init() {}; - - /* General */ - - //! Check if the storage type is available. - /** A storage subclass should return true if it can be successfully used, i.e. if all - * prerequisites are in place (e.g. we have an appropriate DB driver etc.). - * \return True if and only if the storage class can be successfully used. - */ - static bool isAvailable() { return false; } - - //! Returns the display name of the storage backend - /** \return A string that can be used by the GUI to describe the storage backend */ - static QString displayName() { return ""; } - - // TODO: Add functions for configuring the backlog handling, i.e. defining auto-cleanup settings etc - - /* User handling */ - - //! Add a new core user to the storage. - /** \param user The username of the new user - * \param password The cleartext password for the new user - * \return The new user's UserId - */ - virtual UserId addUser(QString user, QString password) = 0; - - //! Update a core user's password. - /** \param user The user's id - * \param password The user's new password - */ - virtual void updateUser(UserId user, QString password) = 0; - - //! Validate a username with a given password. - /** \param user The username to validate - * \param password The user's alleged password - * \return A valid UserId if the password matches the username; 0 else - */ - virtual UserId validateUser(QString user, QString password) = 0; - - //! Remove a core user from storage. - /** \param user The userid to delete - */ - virtual void delUser(UserId user) = 0; - - /* Buffer handling */ - - //! Get the unique BufferId for the given combination of network and buffername for a user. - /** \param user The core user who owns this buffername - * \param network The network name - * \param buffer The buffer name (if empty, the net's status buffer is returned) - * \return The BufferId corresponding to the given network and buffer name, or 0 if not found - */ - virtual BufferId getBufferId(UserId user, QString network, QString buffer = "") = 0; - - //! Request a list of all buffers known to a user since a certain point in time. - /** This method is used to get a list of all buffers we have stored a backlog from. - * Optionally, a QDateTime can be given, so that only buffers are listed that where active - * since that point in time. - * \param user The user whose buffers we request - * \param since If this is defined, older buffers will be ignored - * \return A list of the BufferIds for all buffers as requested - */ - virtual QList requestBuffers(UserId user, QDateTime since = QDateTime()) = 0; - - /* Message handling */ - - //! Store a Message in the backlog. - /** \param msg The message object to be stored - * \return The globally unique id for the stored message - */ - virtual MsgId logMessage(Message msg) = 0; - - //! Request a certain number (or all) messages stored in a given buffer. - /** \param buffer The buffer we request messages from - * \param lastmsgs The number of messages we would like to receive, or -1 if we'd like all messages from that buffername - * \param offset Do not return (but DO count) messages with MsgId >= offset, if offset >= 0 - * \return The requested list of messages - */ - virtual QList requestMsgs(BufferId buffer, int lastmsgs = -1, int offset = -1) = 0; - - //! Request messages stored in a given buffer since a certain point in time. - /** \param buffer The buffer we request messages from - * \param since Only return messages newer than this point in time - * \param offset Do not return messages with MsgId >= offset, if offset >= 0 - * \return The requested list of messages - */ - virtual QList requestMsgs(BufferId buffer, QDateTime since, int offset = -1) = 0; - - //! Request a range of messages stored in a given buffer. - /** \param buffer The buffer we request messages from - * \param first Return messages with first <= MsgId <= last - * \param last Return messages with first <= MsgId <= last - * \return The requested list of messages - */ - virtual QList requestMsgRange(BufferId buffer, int first, int last) = 0; - - public slots: - //! This is just for importing the old file-based backlog */ - /** This slot needs to be implemented in the storage backends. - * It should first prepare (delete?) the database, then call initBackLogOld(UserId id). - * If the importing was successful, backLogEnabledOld will be true afterwards. - */ - virtual void importOldBacklog() = 0; - - signals: - //! Sent if a new BufferId is created, or an existing one changed somehow. - void bufferIdUpdated(BufferId); + Storage(QObject *parent = 0); + virtual ~Storage() {}; - public: - /* Exceptions */ - struct AuthError : public Exception {}; - - protected: - // Old stuff, just for importing old file-based data - void initBackLogOld(UserId id); - - QSqlDatabase logDb; // FIXME this does not belong in the base class! - - bool backLogEnabledOld; - QDir backLogDir; - QHash > backLog; - QHash logFiles; - QHash logStreams; - QHash logFileDates; - QHash logFileDirs; +public slots: + /* General */ + + //! Check if the storage type is available. + /** A storage subclass should return true if it can be successfully used, i.e. if all + * prerequisites are in place (e.g. we have an appropriate DB driver etc.). + * \return True if and only if the storage class can be successfully used. + */ + virtual bool isAvailable() const = 0; + + //! Returns the display name of the storage backend + /** \return A string that can be used by the client to name the storage backend */ + virtual QString displayName() const = 0; + + //! Returns a description of this storage backend + /** \return A string that can be displayed by the client to describe the storage backend */ + virtual QString description() const = 0; + + //! Setup the storage provider. + /** This prepares the storage provider (e.g. create tables, etc.) for use within Quassel. + * \param settings Hostname, port, username, password, ... + * \return True if and only if the storage provider was initialized successfully. + */ + virtual bool setup(const QVariantMap &settings = QVariantMap()) = 0; + + //! Initialize the storage provider + /** \param settings Hostname, port, username, password, ... + * \return True if and only if the storage provider was initialized successfully. + */ + virtual bool init(const QVariantMap &settings = QVariantMap()) = 0; + + //! Makes temp data persistent + /** This Method is periodically called by the Quassel Core to make temporary + * data persistant. This reduces the data loss drastically in the + * unlikely case of a Core crash. + */ + virtual void sync() = 0; + + // TODO: Add functions for configuring the backlog handling, i.e. defining auto-cleanup settings etc + + /* User handling */ + + //! Add a new core user to the storage. + /** \param user The username of the new user + * \param password The cleartext password for the new user + * \return The new user's UserId + */ + virtual UserId addUser(const QString &user, const QString &password) = 0; + + //! Update a core user's password. + /** \param user The user's id + * \param password The user's new password + */ + virtual void updateUser(UserId user, const QString &password) = 0; + + //! Rename a user + /** \param user The user's id + * \param newName The user's new name + */ + virtual void renameUser(UserId user, const QString &newName) = 0; + + //! Validate a username with a given password. + /** \param user The username to validate + * \param password The user's alleged password + * \return A valid UserId if the password matches the username; 0 else + */ + virtual UserId validateUser(const QString &user, const QString &password) = 0; + + //! Determine the UserId of the internal user + /** \return A valid UserId if the password matches the username; 0 else + */ + virtual UserId internalUser() = 0; + + //! Remove a core user from storage. + /** \param user The userid to delete + */ + virtual void delUser(UserId user) = 0; + + //! Store a user setting persistently + /** + * \param userId The users Id + * \param settingName The Name of the Setting + * \param data The Value + */ + virtual void setUserSetting(UserId userId, const QString &settingName, const QVariant &data) = 0; + + //! Retrieve a persistent user setting + /** + * \param userId The users Id + * \param settingName The Name of the Setting + * \param default Value to return in case it's unset. + * \return the Value of the Setting or the default value if it is unset. + */ + virtual QVariant getUserSetting(UserId userId, const QString &settingName, const QVariant &data = QVariant()) = 0; + + /* Network handling */ + + //! Create a new Network in the storage backend and return it unique Id + /** \param user The core user who owns this network + * \param networkInfo The networkInfo holding the network definition + * \return the NetworkId of the newly created Network. Possibly invalid. + */ + virtual NetworkId createNetwork(UserId user, const NetworkInfo &info) = 0; + + //! Apply the changes to NetworkInfo info to the storage engine + /** + * \param user The core user + * \param networkInfo The Updated NetworkInfo + * \return true if successfull. + */ + virtual bool updateNetwork(UserId user, const NetworkInfo &info) = 0; + + //! Permanently remove a Network and all the data associated with it. + /** \note This method is thredsafe. + * + * \param user The core user + * \param networkId The network to delete + * \return true if successfull. + */ + virtual bool removeNetwork(UserId user, const NetworkId &networkId) = 0; + + //! Returns a list of all NetworkInfos for the given UserId user + /** \note This method is thredsafe. + * + * \param user The core user + * \return QList. + */ + virtual QList networks(UserId user) = 0; + + //! Get the unique NetworkId of the network for a user. + /** \param user The core user who owns this network + * \param network The network name + * \return The NetworkId corresponding to the given network, or 0 if not found + */ + virtual NetworkId getNetworkId(UserId user, const QString &network) = 0; + + //! Get a list of Networks to restore + /** Return a list of networks the user was connected at the time of core shutdown + * \note This method is threadsafe. + * + * \param user The User Id in question + */ + virtual QList connectedNetworks(UserId user) = 0; + + //! Update the connected state of a network + /** \note This method is threadsafe + * + * \param user The Id of the networks owner + * \param networkId The Id of the network + * \param isConnected whether the network is connected or not + */ + virtual void setNetworkConnected(UserId user, const NetworkId &networkId, bool isConnected) = 0; + + //! Get a hash of channels with their channel keys for a given network + /** The keys are channel names and values are passwords (possibly empty) + * \note This method is threadsafe + * + * \param user The id of the networks owner + * \param networkId The Id of the network + */ + virtual QHash persistentChannels(UserId user, const NetworkId &networkId) = 0; + + //! Update the connected state of a channel + /** \note This method is threadsafe + * + * \param user The Id of the networks owner + * \param networkId The Id of the network + * \param channel The name of the channel + * \param isJoined whether the channel is connected or not + */ + virtual void setChannelPersistent(UserId user, const NetworkId &networkId, const QString &channel, bool isJoined) = 0; + + //! Update the key of a channel + /** \note This method is threadsafe + * + * \param user The Id of the networks owner + * \param networkId The Id of the network + * \param channel The name of the channel + * \param key The key of the channel (possibly empty) + */ + virtual void setPersistentChannelKey(UserId user, const NetworkId &networkId, const QString &channel, const QString &key) = 0; + + /* Buffer handling */ + + //! Get the unique BufferInfo for the given combination of network and buffername for a user. + /** \param user The core user who owns this buffername + * \param networkId The network id + * \param type The type of the buffer (StatusBuffer, Channel, etc.) + * \param buffer The buffer name (if empty, the net's status buffer is returned) + * \return The BufferInfo corresponding to the given network and buffer name, or an invalid BufferInfo if not found + */ + virtual BufferInfo getBufferInfo(UserId user, const NetworkId &networkId, BufferInfo::Type type, const QString &buffer = "") = 0; + + //! Get the unique BufferInfo for a bufferId + /** \param user The core user who owns this buffername + * \param bufferId The id of the buffer + * \return The BufferInfo corresponding to the given buffer id, or an invalid BufferInfo if not found. + */ + virtual BufferInfo getBufferInfo(UserId user, const BufferId &bufferId) = 0; + + //! Request a list of all buffers known to a user. + /** This method is used to get a list of all buffers we have stored a backlog from. + * \param user The user whose buffers we request + * \return A list of the BufferInfos for all buffers as requested + */ + virtual QList requestBuffers(UserId user) = 0; + + //! Request a list of BufferIds for a given NetworkId + /** \note This method is threadsafe. + * + * \param user The user whose buffers we request + * \param networkId The NetworkId of the network in question + * \return List of BufferIds belonging to the Network + */ + virtual QList requestBufferIdsForNetwork(UserId user, NetworkId networkId) = 0; + + //! Remove permanently a buffer and it's content from the storage backend + /** This call cannot be reverted! + * \param user The user who is the owner of the buffer + * \param bufferId The bufferId + * \return true if successfull + */ + virtual bool removeBuffer(const UserId &user, const BufferId &bufferId) = 0; + + //! Rename a Buffer + /** \param user The id of the buffer owner + * \param networkId The id of the network the buffer belongs to + * \param newName The new name of the buffer + * \param oldName The previous name of the buffer + * \return the BufferId of the affected buffer or an invalid BufferId if not successfull + */ + virtual BufferId renameBuffer(const UserId &user, const NetworkId &networkId, const QString &newName, const QString &oldName) = 0; + + //! Update the LastSeenDate for a Buffer + /** This Method is used to make the LastSeenDate of a Buffer persistent + * \param user The Owner of that Buffer + * \param bufferId The buffer id + * \param MsgId The Message id of the message that has been just seen + */ + virtual void setBufferLastSeenMsg(UserId user, const BufferId &bufferId, const MsgId &msgId) = 0; + + //! Get a Hash of all last seen message ids + /** This Method is called when the Quassel Core is started to restore the lastSeenMsgIds + * \param user The Owner of the buffers + */ + virtual QHash bufferLastSeenMsgIds(UserId user) = 0; + + + /* Message handling */ + + //! Store a Message in the backlog. + /** \param msg The message object to be stored + * \return The globally unique id for the stored message + */ + virtual MsgId logMessage(Message msg) = 0; + + //! Request a certain number (or all) messages stored in a given buffer. + /** \param buffer The buffer we request messages from + * \param limit The number of messages we would like to receive, or -1 if we'd like all messages from that buffername + * \param offset Do not return (but DO count) messages with MsgId >= offset, if offset >= 0 + * \return The requested list of messages + */ + virtual QList requestMsgs(UserId user, BufferId buffer, int limit = -1, int offset = -1) = 0; + + //! Request messages stored in a given buffer since a certain point in time. + /** \param buffer The buffer we request messages from + * \param since Only return messages newer than this point in time + * \param offset Do not return messages with MsgId >= offset, if offset >= 0 + * \return The requested list of messages + */ + virtual QList requestMsgs(UserId user, BufferId buffer, QDateTime since, int offset = -1) = 0; + + //! Request a range of messages stored in a given buffer. + /** \param buffer The buffer we request messages from + * \param first Return messages with first <= MsgId <= last + * \param last Return messages with first <= MsgId <= last + * \return The requested list of messages + */ + virtual QList requestMsgRange(UserId user, BufferId buffer, int first, int last) = 0; + + //! Request all unread messages + /** \param buffer The buffer we request messages from + * \param first Return messages with first <= MsgId + * \param limit Max amount of messages + * \return The requested list of messages + */ + virtual QList requestNewMsgs(UserId user, BufferId bufferId, int first, int limit = -1) = 0; + + //! Request all unread messages for all buffers + /** \param first Return messages with first <= MsgId + * \param limit Max amount of messages + * \return The requested list of messages + */ + virtual QList requestAllNewMsgs(UserId user, int first, int limit = -1) = 0; + +signals: + //! Sent when a new BufferInfo is created, or an existing one changed somehow. + void bufferInfoUpdated(UserId user, const BufferInfo &); + //! Sent when a Buffer was renamed + void bufferRenamed(const QString &newName, const QString &oldName); + //! Sent when a new user has been added + void userAdded(UserId, const QString &username); + //! Sent when a user has been renamed + void userRenamed(UserId, const QString &newname); + //! Sent when a user has been removed + void userRemoved(UserId); +protected: + //! when implementing a storage handler, use this method to crypt user passwords. + /** This guarantees compatibility with other storage handlers and allows easy migration + */ + QString cryptedPassword(const QString &password); };