diff --git a/include/znc/Chan.h b/include/znc/Chan.h
index 2c448eb3..d9f28e15 100644
--- a/include/znc/Chan.h
+++ b/include/znc/Chan.h
@@ -60,7 +60,7 @@ public:
 	~CChan();
 
 	void Reset();
-	CConfig ToConfig();
+	CConfig ToConfig() const;
 	void Clone(CChan& chan);
 	void Cycle() const;
 	void JoinUser(bool bForce = false, const CString& sKey = "", CClient* pClient = NULL);
diff --git a/include/znc/Client.h b/include/znc/Client.h
index 32fa1e2c..4842d13d 100644
--- a/include/znc/Client.h
+++ b/include/znc/Client.h
@@ -131,7 +131,7 @@ public:
 	void PutModule(const CString& sModule, const CString& sLine);
 	void PutModNotice(const CString& sModule, const CString& sLine);
 
-	bool IsCapEnabled(const CString& sCap) { return 1 == m_ssAcceptedCaps.count(sCap); }
+	bool IsCapEnabled(const CString& sCap) const { return 1 == m_ssAcceptedCaps.count(sCap); }
 
 	virtual void ReadLine(const CString& sData);
 	bool SendMotd();
@@ -151,7 +151,7 @@ public:
 	const std::vector<CClient*>& GetClients() const;
 	const CIRCSock* GetIRCSock() const;
 	CIRCSock* GetIRCSock();
-	CString GetFullName();
+	CString GetFullName() const;
 private:
 	void HandleCap(const CString& sLine);
 	void RespondCap(const CString& sResponse);
diff --git a/include/znc/FileUtils.h b/include/znc/FileUtils.h
index 4be163ab..fdfcbb11 100644
--- a/include/znc/FileUtils.h
+++ b/include/znc/FileUtils.h
@@ -238,8 +238,8 @@ public:
 		return uRet;
 	}
 
-	CFile::EFileAttr GetSortAttr() { return m_eSortAttr; }
-	bool IsDescending() { return m_bDesc; }
+	CFile::EFileAttr GetSortAttr() const { return m_eSortAttr; }
+	bool IsDescending() const { return m_bDesc; }
 
 	// Check if sPath + "/" + sAdd (~/ is handled) is an absolute path which
 	// resides under sPath. Returns absolute path on success, else "".
diff --git a/include/znc/HTTPSock.h b/include/znc/HTTPSock.h
index 2c3cc872..08919364 100644
--- a/include/znc/HTTPSock.h
+++ b/include/znc/HTTPSock.h
@@ -56,7 +56,7 @@ public:
 	void ParseURI();
 	void GetPage();
 	static CString GetDate(time_t tm = 0);
-	virtual CString GetRemoteIP();
+	virtual CString GetRemoteIP() const;
 
 	// Cookies
 	CString GetRequestCookie(const CString& sKey) const;
diff --git a/include/znc/IRCNetwork.h b/include/znc/IRCNetwork.h
index ad7bb122..8b06069d 100644
--- a/include/znc/IRCNetwork.h
+++ b/include/znc/IRCNetwork.h
@@ -57,12 +57,12 @@ public:
 
 	void Clone(const CIRCNetwork& Network, bool bCloneName = true);
 
-	CString GetNetworkPath();
+	CString GetNetworkPath() const;
 
 	void DelServers();
 
 	bool ParseConfig(CConfig *pConfig, CString& sError, bool bUpgrade = false);
-	CConfig ToConfig();
+	CConfig ToConfig() const;
 
 	void BounceAllClients();
 
@@ -71,7 +71,7 @@ public:
 	void ClientConnected(CClient *pClient);
 	void ClientDisconnected(CClient *pClient);
 
-	CUser* GetUser();
+	CUser* GetUser() const;
 	const CString& GetName() const;
 	bool IsNetworkAttached() const { return !m_vClients.empty(); }
 	const std::vector<CClient*>& GetClients() const { return m_vClients; }
diff --git a/include/znc/Modules.h b/include/znc/Modules.h
index 71f1ad67..c595ee47 100644
--- a/include/znc/Modules.h
+++ b/include/znc/Modules.h
@@ -978,13 +978,13 @@ public:
 	 *           except when we are in a user-specific module hook in which
 	 *           case this is the user pointer.
 	 */
-	CUser* GetUser() { return m_pUser; }
+	CUser* GetUser() const { return m_pUser; }
 	/** @returns NULL except when we are in a client-specific module hook in
 	 *           which case this is the client for which the hook is called.
 	 */
-	CIRCNetwork* GetNetwork() { return m_pNetwork; }
-	CClient* GetClient() { return m_pClient; }
-	CSockManager* GetManager() { return m_pManager; }
+	CIRCNetwork* GetNetwork() const { return m_pNetwork; }
+	CClient* GetClient() const { return m_pClient; }
+	CSockManager* GetManager() const { return m_pManager; }
 	// !Getters
 
 	// Global Modules
@@ -1114,9 +1114,9 @@ public:
 	void SetUser(CUser* pUser) { m_pUser = pUser; }
 	void SetNetwork(CIRCNetwork* pNetwork) { m_pNetwork = pNetwork; }
 	void SetClient(CClient* pClient) { m_pClient = pClient; }
-	CUser* GetUser() { return m_pUser; }
-	CIRCNetwork* GetNetwork() { return m_pNetwork; }
-	CClient* GetClient() { return m_pClient; }
+	CUser* GetUser() const { return m_pUser; }
+	CIRCNetwork* GetNetwork() const { return m_pNetwork; }
+	CClient* GetClient() const { return m_pClient; }
 
 	void UnloadAll();
 
diff --git a/include/znc/User.h b/include/znc/User.h
index f0661ec7..f8e9108a 100644
--- a/include/znc/User.h
+++ b/include/znc/User.h
@@ -57,7 +57,7 @@ public:
 		return CUtils::SaltedSHA256Hash(sPass, sSalt);
 	}
 
-	CConfig ToConfig();
+	CConfig ToConfig() const;
 	bool CheckPass(const CString& sPass) const;
 	bool AddAllowedHost(const CString& sHostMask);
 	bool IsHostAllowed(const CString& sHostMask) const;
@@ -91,7 +91,7 @@ public:
 	void UserConnected(CClient* pClient);
 	void UserDisconnected(CClient* pClient);
 
-	CString GetLocalDCCIP();
+	CString GetLocalDCCIP() const;
 
 	CString ExpandString(const CString& sStr) const;
 	CString& ExpandString(const CString& sStr, CString& sRet) const;
@@ -141,8 +141,8 @@ public:
 	// !Setters
 
 	// Getters
-	std::vector<CClient*> GetAllClients();
 	const std::vector<CClient*>& GetUserClients() const { return m_vClients; }
+	std::vector<CClient*> GetAllClients() const;
 	const CString& GetUserName() const;
 	const CString& GetCleanUserName() const;
 	const CString& GetNick(bool bAllowDefault = true) const;
diff --git a/src/Chan.cpp b/src/Chan.cpp
index f962773c..befa225c 100644
--- a/src/Chan.cpp
+++ b/src/Chan.cpp
@@ -80,7 +80,7 @@ void CChan::Reset() {
 	ResetJoinTries();
 }
 
-CConfig CChan::ToConfig() {
+CConfig CChan::ToConfig() const {
 	CConfig config;
 
 	if (m_bHasBufferCountSet)
diff --git a/src/Client.cpp b/src/Client.cpp
index 8c8603c2..52802aa3 100644
--- a/src/Client.cpp
+++ b/src/Client.cpp
@@ -775,7 +775,7 @@ void CClient::PutIRC(const CString& sLine) {
 	}
 }
 
-CString CClient::GetFullName() {
+CString CClient::GetFullName() const {
 	if (!m_pUser)
 		return GetRemoteIP();
 	if (!m_pNetwork)
diff --git a/src/HTTPSock.cpp b/src/HTTPSock.cpp
index f46efd92..29e6f19c 100644
--- a/src/HTTPSock.cpp
+++ b/src/HTTPSock.cpp
@@ -181,7 +181,7 @@ void CHTTPSock::ReadLine(const CString& sData) {
 	}
 }
 
-CString CHTTPSock::GetRemoteIP() {
+CString CHTTPSock::GetRemoteIP() const {
 	if (!m_sForwardedIP.empty()) {
 		return m_sForwardedIP;
 	}
diff --git a/src/IRCNetwork.cpp b/src/IRCNetwork.cpp
index 9534261e..ae3f6809 100644
--- a/src/IRCNetwork.cpp
+++ b/src/IRCNetwork.cpp
@@ -305,7 +305,7 @@ void CIRCNetwork::DelServers() {
 	m_vServers.clear();
 }
 
-CString CIRCNetwork::GetNetworkPath() {
+CString CIRCNetwork::GetNetworkPath() const {
 	CString sNetworkPath = m_pUser->GetUserPath() + "/networks/" + m_sName;
 
 	if (!CFile::Exists(sNetworkPath)) {
@@ -455,7 +455,7 @@ bool CIRCNetwork::ParseConfig(CConfig *pConfig, CString& sError, bool bUpgrade)
 	return true;
 }
 
-CConfig CIRCNetwork::ToConfig() {
+CConfig CIRCNetwork::ToConfig() const {
 	CConfig config;
 
 	if (!m_sNick.empty()) {
@@ -487,7 +487,7 @@ CConfig CIRCNetwork::ToConfig() {
 	}
 
 	// Modules
-	CModules& Mods = GetModules();
+	const CModules& Mods = GetModules();
 
 	if (!Mods.empty()) {
 		for (unsigned int a = 0; a < Mods.size(); a++) {
@@ -638,7 +638,7 @@ void CIRCNetwork::ClientDisconnected(CClient *pClient) {
 	}
 }
 
-CUser* CIRCNetwork::GetUser() {
+CUser* CIRCNetwork::GetUser() const {
 	return m_pUser;
 }
 
diff --git a/src/User.cpp b/src/User.cpp
index d348bdd2..edb409b9 100644
--- a/src/User.cpp
+++ b/src/User.cpp
@@ -859,7 +859,7 @@ bool CUser::IsValid(CString& sErrMsg, bool bSkipPass) const {
 	return true;
 }
 
-CConfig CUser::ToConfig() {
+CConfig CUser::ToConfig() const {
 	CConfig config;
 	CConfig passConfig;
 
@@ -923,7 +923,7 @@ CConfig CUser::ToConfig() {
 	}
 
 	// Modules
-	CModules& Mods = GetModules();
+	const CModules& Mods = GetModules();
 
 	if (!Mods.empty()) {
 		for (unsigned int a = 0; a < Mods.size(); a++) {
@@ -976,11 +976,11 @@ bool CUser::CheckPass(const CString& sPass) const {
 	return (CClient*) CZNC::Get().GetManager().FindSockByName(sSockName);
 }*/
 
-CString CUser::GetLocalDCCIP() {
+CString CUser::GetLocalDCCIP() const {
 	if (!GetDCCBindHost().empty())
 		return GetDCCBindHost();
 
-	for (vector<CIRCNetwork*>::iterator it = m_vIRCNetworks.begin(); it != m_vIRCNetworks.end(); ++it) {
+	for (vector<CIRCNetwork*>::const_iterator it = m_vIRCNetworks.begin(); it != m_vIRCNetworks.end(); ++it) {
 		CIRCNetwork *pNetwork = *it;
 		CIRCSock* pIRCSock = pNetwork->GetIRCSock();
 		if (pIRCSock) {
@@ -1167,7 +1167,7 @@ bool CUser::SetStatusPrefix(const CString& s) {
 // !Setters
 
 // Getters
-vector<CClient*> CUser::GetAllClients() {
+vector<CClient*> CUser::GetAllClients() const {
 	vector<CClient*> vClients;
 
 	for (unsigned int a = 0; a < m_vIRCNetworks.size(); a++) {