Refactor around translatePassword

Change types for passed password from wstring to string, which removes converting
back and forth in most cases. Move the narrow_to_wide conversion, where its neccessary,
closer to irrlicht. Remove trailing spaces in guiPasswordChange.cpp. Make parameters for
translatePassword passed as const reference.

src/client.cpp

@@ -1062,8 +1062,8 @@ void Client::sendChatMessage(const std::wstring &message)
 	Send(&pkt);
 }
 
-void Client::sendChangePassword(const std::wstring &oldpassword,
-        const std::wstring &newpassword)
+void Client::sendChangePassword(const std::string &oldpassword,
+        const std::string &newpassword)
 {
 	Player *player = m_env.getLocalPlayer();
 	if(player == NULL)

src/client.h

@@ -407,8 +407,8 @@ public:
 			const std::map<std::string, std::string> &fields);
 	void sendInventoryAction(InventoryAction *a);
 	void sendChatMessage(const std::wstring &message);
-	void sendChangePassword(const std::wstring &oldpassword,
-	                        const std::wstring &newpassword);
+	void sendChangePassword(const std::string &oldpassword,
+	                        const std::string &newpassword);
 	void sendDamage(u8 damage);
 	void sendBreath(u16 breath);
 	void sendRespawn();

src/client/clientlauncher.cpp

@@ -392,7 +392,7 @@ bool ClientLauncher::launch_game(std::string &error_message,
 	else
 		playername = menudata.name;
 
-	password = translatePassword(playername, narrow_to_wide(menudata.password));
+	password = translatePassword(playername, menudata.password);
 
 	g_settings->set("name", playername);
 

src/guiPasswordChange.cpp

@@ -203,7 +203,8 @@ bool GUIPasswordChange::acceptInput()
 				e->setVisible(true);
 			return false;
 		}
-		m_client->sendChangePassword(oldpass, newpass);
+		m_client->sendChangePassword(wide_to_narrow(oldpass),
+			wide_to_narrow(newpass));
 		return true;
 }
 

src/network/serverpackethandler.cpp

@@ -267,8 +267,8 @@ void Server::handleCommand_Auth(NetworkPacket* pkt)
 			DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_EMPTY_PASSWORD);
 			return;
 		}
-		std::wstring raw_default_password =
-			narrow_to_wide(g_settings->get("default_password"));
+		std::string raw_default_password =
+			g_settings->get("default_password");
 		std::string initial_password =
 			translatePassword(playername, raw_default_password);
 
@@ -571,8 +571,8 @@ void Server::handleCommand_Init_Legacy(NetworkPacket* pkt)
 					L"disallowed. Set a password and try again.");
 			return;
 		}
-		std::wstring raw_default_password =
-			narrow_to_wide(g_settings->get("default_password"));
+		std::string raw_default_password =
+			g_settings->get("default_password");
 		std::string initial_password =
 			translatePassword(playername, raw_default_password);
 

src/script/lua_api/l_util.cpp

@@ -255,8 +255,7 @@ int ModApiUtil::l_get_password_hash(lua_State *L)
 	NO_MAP_LOCK_REQUIRED;
 	std::string name = luaL_checkstring(L, 1);
 	std::string raw_password = luaL_checkstring(L, 2);
-	std::string hash = translatePassword(name,
-			narrow_to_wide(raw_password));
+	std::string hash = translatePassword(name, raw_password);
 	lua_pushstring(L, hash.c_str());
 	return 1;
 }

src/util/string.cpp

@@ -181,12 +181,13 @@ std::string wide_to_narrow(const std::wstring &wcs)
 // their password. (Exception : if the password field is
 // blank, we send a blank password - this is for backwards
 // compatibility with password-less players).
-std::string translatePassword(std::string playername, std::wstring password)
+std::string translatePassword(const std::string &playername,
+	const std::string &password)
 {
 	if (password.length() == 0)
 		return "";
 
-	std::string slt = playername + wide_to_narrow(password);
+	std::string slt = playername + password;
 	SHA1 sha1;
 	sha1.addBytes(slt.c_str(), slt.length());
 	unsigned char *digest = sha1.getDigest();

src/util/string.h

@@ -43,7 +43,8 @@ wchar_t *narrow_to_wide_c(const char *str);
 
 std::wstring narrow_to_wide(const std::string &mbs);
 std::string wide_to_narrow(const std::wstring &wcs);
-std::string translatePassword(std::string playername, std::wstring password);
+std::string translatePassword(const std::string &playername,
+	const std::string &password);
 std::string urlencode(std::string str);
 std::string urldecode(std::string str);
 u32 readFlagString(std::string str, const FlagDesc *flagdesc, u32 *flagmask);