* 'FOREACH_MOD(I_OnConnect,OnConnect(user));'
*/
#define FOREACH_MOD(y,x) if (ServerInstance->Config->global_implementation[y] > 0) { \
- for (int _i = 0; _i <= ServerInstance->GetModuleCount(); _i++) { \
+ for (int _i = 0; _i <= ServerInstance->Modules->GetCount(); _i++) { \
if (ServerInstance->Config->implement_lists[_i][y]) \
try \
{ \
- ServerInstance->modules[_i]->x ; \
+ ServerInstance->Modules->modules[_i]->x ; \
} \
catch (CoreException& modexcept) \
{ \
* 'FOREACH_MOD_I(Instance, OnConnect, OnConnect(user));'
*/
#define FOREACH_MOD_I(z,y,x) if (z->Config->global_implementation[y] > 0) { \
- for (int _i = 0; _i <= z->GetModuleCount(); _i++) { \
+ for (int _i = 0; _i <= z->Modules->GetCount(); _i++) { \
if (z->Config->implement_lists[_i][y]) \
try \
{ \
- z->modules[_i]->x ; \
+ z->Modules->modules[_i]->x ; \
} \
catch (CoreException& modexcept) \
{ \
*/
#define FOREACH_RESULT(y,x) { if (ServerInstance->Config->global_implementation[y] > 0) { \
MOD_RESULT = 0; \
- for (int _i = 0; _i <= ServerInstance->GetModuleCount(); _i++) { \
+ for (int _i = 0; _i <= ServerInstance->Modules->GetCount(); _i++) { \
if (ServerInstance->Config->implement_lists[_i][y]) { \
try \
{ \
- int res = ServerInstance->modules[_i]->x ; \
+ int res = ServerInstance->Modules->modules[_i]->x ; \
if (res != 0) { \
MOD_RESULT = res; \
break; \
*/
#define FOREACH_RESULT_I(z,y,x) { if (z->Config->global_implementation[y] > 0) { \
MOD_RESULT = 0; \
- for (int _i = 0; _i <= z->GetModuleCount(); _i++) { \
+ for (int _i = 0; _i <= z->Modules->GetCount(); _i++) { \
if (z->Config->implement_lists[_i][y]) { \
try \
{ \
- int res = z->modules[_i]->x ; \
+ int res = z->Modules->modules[_i]->x ; \
if (res != 0) { \
MOD_RESULT = res; \
break; \
*/
typedef std::vector<Module*> ModuleList;
-/** A list of loaded ModuleFactories
+/** A list of loaded module handles (ircd_module)
*/
-typedef std::vector<ircd_module*> FactoryList;
+typedef std::vector<ircd_module*> ModuleHandleList;
+
+/** ModuleManager takes care of all things module-related
+ * in the core.
+ */
+class CoreExport ModuleManager : public classbase
+{
+ private:
+ /** Holds a string describing the last module error to occur
+ */
+ char MODERR[MAXBUF];
+
+ /** The feature names published by various modules
+ */
+ featurelist Features;
+
+ /** The interface names published by various modules
+ */
+ interfacelist Interfaces;
+
+ /** Total number of modules loaded into the ircd, minus one
+ */
+ int ModCount;
+
+ /** Our pointer to the main insp instance
+ */
+ InspIRCd* Instance;
+
+ public:
+ /** A list of ircd_module* module handles
+ * Note that this list is always exactly 255 in size.
+ * The actual number of loaded modules is available from GetModuleCount()
+ */
+ ModuleHandleList handles;
+
+ /** A list of Module* module classes
+ * Note that this list is always exactly 255 in size.
+ * The actual number of loaded modules is available from GetModuleCount()
+ */
+ ModuleList modules;
+
+ /** Simple, bog-standard, boring constructor.
+ */
+ ModuleManager(InspIRCd* Ins);
+
+ ~ModuleManager();
+
+ /** Returns text describing the last module error
+ * @return The last error message to occur
+ */
+ const char* LastError();
+
+ /** Load a given module file
+ * @param filename The file to load
+ * @return True if the module was found and loaded
+ */
+ bool Load(const char* filename);
+
+ /** Unload a given module file
+ * @param filename The file to unload
+ * @return True if the module was unloaded
+ */
+ bool Unload(const char* filename);
+
+ /** Called by the InspIRCd constructor to load all modules from the config file.
+ */
+ void LoadAll();
+
+ /** Get the total number of currently loaded modules
+ * @return The number of loaded modules
+ */
+ int GetCount()
+ {
+ return this->ModCount;
+ }
+
+ /** Find a module by name, and return a Module* to it.
+ * This is preferred over iterating the module lists yourself.
+ * @param name The module name to look up
+ * @return A pointer to the module, or NULL if the module cannot be found
+ */
+ Module* Find(const std::string &name);
+
+ /** Remove a module handle pointer
+ * @param j Index number of the module handle to remove
+ * @return True if a handle existed at the given index, false otherwise
+ */
+ bool EraseHandle(unsigned int j);
+
+ /** Remove a Module pointer
+ * @param j Index number of the Module to remove
+ * @return True if a handle existed at the given index, false otherwise
+ */
+ bool EraseModule(unsigned int j);
+
+ /** Move a given module to a specific slot in the list
+ * @param modulename The module name to relocate
+ * @param slot The slot to move the module into
+ */
+ void MoveTo(std::string modulename,int slot);
+
+ /** Moves the given module to the last slot in the list
+ * @param modulename The module name to relocate
+ */
+ void MoveToLast(std::string modulename);
+
+ /** Moves the given module to the first slot in the list
+ * @param modulename The module name to relocate
+ */
+ void MoveToFirst(std::string modulename);
+
+ /** Moves one module to be placed after another in the list
+ * @param modulename The module name to relocate
+ * @param after The module name to place the module after
+ */
+ void MoveAfter(std::string modulename, std::string after);
+
+ /** Moves one module to be placed before another in the list
+ * @param modulename The module name to relocate
+ * @param after The module name to place the module before
+ */
+ void MoveBefore(std::string modulename, std::string before);
+
+ /** For use with Module::Prioritize().
+ * When the return value of this function is returned from
+ * Module::Prioritize(), this specifies that the module wishes
+ * to be ordered exactly BEFORE 'modulename'. For more information
+ * please see Module::Prioritize().
+ * @param modulename The module your module wants to be before in the call list
+ * @returns a priority ID which the core uses to relocate the module in the list
+ */
+ long PriorityBefore(const std::string &modulename);
+
+ /** For use with Module::Prioritize().
+ * When the return value of this function is returned from
+ * Module::Prioritize(), this specifies that the module wishes
+ * to be ordered exactly AFTER 'modulename'. For more information please
+ * see Module::Prioritize().
+ * @param modulename The module your module wants to be after in the call list
+ * @returns a priority ID which the core uses to relocate the module in the list
+ */
+ long PriorityAfter(const std::string &modulename);
+
+ /** Publish a 'feature'.
+ * There are two ways for a module to find another module it depends on.
+ * Either by name, using InspIRCd::FindModule, or by feature, using this
+ * function. A feature is an arbitary string which identifies something this
+ * module can do. For example, if your module provides SSL support, but other
+ * modules provide SSL support too, all the modules supporting SSL should
+ * publish an identical 'SSL' feature. This way, any module requiring use
+ * of SSL functions can just look up the 'SSL' feature using FindFeature,
+ * then use the module pointer they are given.
+ * @param FeatureName The case sensitive feature name to make available
+ * @param Mod a pointer to your module class
+ * @returns True on success, false if the feature is already published by
+ * another module.
+ */
+ bool PublishFeature(const std::string &FeatureName, Module* Mod);
+
+ /** Publish a module to an 'interface'.
+ * Modules which implement the same interface (the same way of communicating
+ * with other modules) can publish themselves to an interface, using this
+ * method. When they do so, they become part of a list of related or
+ * compatible modules, and a third module may then query for that list
+ * and know that all modules within that list offer the same API.
+ * A prime example of this is the hashing modules, which all accept the
+ * same types of Request class. Consider this to be similar to PublishFeature,
+ * except for that multiple modules may publish the same 'feature'.
+ * @param InterfaceName The case sensitive interface name to make available
+ * @param Mod a pointer to your module class
+ * @returns True on success, false on failure (there are currently no failure
+ * cases)
+ */
+ bool PublishInterface(const std::string &InterfaceName, Module* Mod);
+
+ /** Return a pair saying how many other modules are currently using the
+ * interfaces provided by module m.
+ * @param m The module to count usage for
+ * @return A pair, where the first value is the number of uses of the interface,
+ * and the second value is the interface name being used.
+ */
+ std::pair<int,std::string> GetInterfaceInstanceCount(Module* m);
+
+ /** Mark your module as using an interface.
+ * If you mark your module as using an interface, then that interface
+ * module may not unload until your module has unloaded first.
+ * This can be used to prevent crashes by ensuring code you depend on
+ * is always in memory while your module is active.
+ * @param InterfaceName The interface to use
+ */
+ void UseInterface(const std::string &InterfaceName);
+
+ /** Mark your module as finished with an interface.
+ * If you used UseInterface() above, you should use this method when
+ * your module is finished with the interface (usually in its destructor)
+ * to allow the modules which implement the given interface to be unloaded.
+ * @param InterfaceName The interface you are finished with using.
+ */
+ void DoneWithInterface(const std::string &InterfaceName);
+
+ /** Unpublish a 'feature'.
+ * When your module exits, it must call this method for every feature it
+ * is providing so that the feature table is cleaned up.
+ * @param FeatureName the feature to remove
+ */
+ bool UnpublishFeature(const std::string &FeatureName);
+
+ /** Unpublish your module from an interface
+ * When your module exits, it must call this method for every interface
+ * it is part of so that the interfaces table is cleaned up. Only when
+ * the last item is deleted from an interface does the interface get
+ * removed.
+ * @param InterfaceName the interface to be removed from
+ * @param Mod The module to remove from the interface list
+ */
+ bool UnpublishInterface(const std::string &InterfaceName, Module* Mod);
+
+ /** Find a 'feature'.
+ * There are two ways for a module to find another module it depends on.
+ * Either by name, using InspIRCd::FindModule, or by feature, using the
+ * InspIRCd::PublishFeature method. A feature is an arbitary string which
+ * identifies something this module can do. For example, if your module
+ * provides SSL support, but other modules provide SSL support too, all
+ * the modules supporting SSL should publish an identical 'SSL' feature.
+ * To find a module capable of providing the feature you want, simply
+ * call this method with the feature name you are looking for.
+ * @param FeatureName The feature name you wish to obtain the module for
+ * @returns A pointer to a valid module class on success, NULL on failure.
+ */
+ Module* FindFeature(const std::string &FeatureName);
+
+ /** Find an 'interface'.
+ * An interface is a list of modules which all implement the same API.
+ * @param InterfaceName The Interface you wish to obtain the module
+ * list of.
+ * @return A pointer to a deque of Module*, or NULL if the interface
+ * does not exist.
+ */
+ modulelist* FindInterface(const std::string &InterfaceName);
+
+ /** Given a pointer to a Module, return its filename
+ * @param m The module pointer to identify
+ * @return The module name or an empty string
+ */
+ const std::string& GetModuleName(Module* m);
+};
/** This definition is used as shorthand for the various classes
* and functions needed to make a module loadable by the OS.
projects / user / henk / code / inspircd.git / blobdiff