Add CCapability

include/znc/Modules.h

@@ -25,6 +25,7 @@
 #include <znc/main.h>
 #include <znc/Translation.h>
 #include <functional>
+#include <memory>
 #include <set>
 #include <queue>
 #include <sys/time.h>
@@ -166,6 +167,19 @@ class CFPTimer;
 class CSockManager;
 // !Forward Declarations
 
+class CCapability {
+  public:
+    virtual ~CCapability() = default;
+    virtual void OnServerChangedSupport(CIRCNetwork* pNetwork, bool bState) {}
+    virtual void OnClientChangedSupport(CClient* pClient, bool bState) {}
+
+    CModule* GetModule() { return m_pModule; }
+    void SetModule(CModule* p) { m_pModule = p; }
+
+  protected:
+    CModule* m_pModule = nullptr;
+};
+
 class CTimer : public CCron {
   public:
     CTimer(CModule* pModule, unsigned int uInterval, unsigned int uCycles,
@@ -1292,10 +1306,15 @@ class CModule {
     virtual EModRet OnUnknownUserRaw(CClient* pClient, CString& sLine);
     virtual EModRet OnUnknownUserRawMessage(CMessage& Message);
 
-    /** Called after login, upon disconnect, and also during JumpNetwork. */
+    /** Called after login, and also during JumpNetwork. */
     virtual void OnClientAttached();
+    /** Called upon disconnect, and also during JumpNetwork. */
     virtual void OnClientDetached();
 
+#ifndef SWIG
+    void AddCapability(const CString& sName, std::unique_ptr<CCapability> pCap);
+#endif
+
     /** Called when a client told us CAP LS. Use ssCaps.insert("cap-name")
      *  for announcing capabilities which your module supports.
      *  @param pClient The client which requested the list.
@@ -1391,6 +1410,7 @@ class CModule {
     CString m_sArgs;
     CString m_sModPath;
     CTranslationDomainRefHolder m_Translation;
+    std::map<CString, std::unique_ptr<CCapability>> m_mCaps;
 
   private:
     MCString