src/guiPasswordChange.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54

/*
Part of Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
Copyright (C) 2013 Ciaran Gultnieks <ciaran@ciarang.com>

Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#ifndef GUIPASSWORDCHANGE_HEADER
#define GUIPASSWORDCHANGE_HEADER

#include "irrlichttypes_extrabloated.h"
#include "modalMenu.h"
#include "client.h"
#include <string>

class GUIPasswordChange : public GUIModalMenu
{
public:
	GUIPasswordChange(gui::IGUIEnvironment* env,
			gui::IGUIElement* parent, s32 id,
			IMenuManager *menumgr,
			Client* client);
	~GUIPasswordChange();
	
	void removeChildren();
	/*
		Remove and re-add (or reposition) stuff
	*/
	void regenerateGui(v2u32 screensize);

	void drawMenu();

	bool acceptInput();

	bool OnEvent(const SEvent& event);
	
private:
	Client* m_client;

};

#endif
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "common/c_internal.h"
#include "debug.h"
#include "log.h"
#include "settings.h"

std::string script_get_backtrace(lua_State *L)
{
	lua_rawgeti(L, LUA_REGISTRYINDEX, CUSTOM_RIDX_BACKTRACE);
	lua_call(L, 0, 1);
	return luaL_checkstring(L, -1);
}

int script_exception_wrapper(lua_State *L, lua_CFunction f)
{
	try {
		return f(L);  // Call wrapped function and return result.
	} catch (const char *s) {  // Catch and convert exceptions.
		lua_pushstring(L, s);
	} catch (std::exception &e) {
		lua_pushstring(L, e.what());
	}
	return lua_error(L);  // Rethrow as a Lua error.
}

/*
 * Note that we can't get tracebacks for LUA_ERRMEM or LUA_ERRERR (without
 * hacking Lua internals).  For LUA_ERRMEM, this is because memory errors will
 * not execute the the error handler, and by the time lua_pcall returns the
 * execution stack will have already been unwound.  For LUA_ERRERR, there was
 * another error while trying to generate a backtrace from a LUA_ERRRUN.  It is
 * presumed there is an error with the internal Lua state and thus not possible
 * to gather a coherent backtrace.  Realistically, the best we can do here is
 * print which C function performed the failing pcall.
 */
void script_error(lua_State *L, int pcall_result, const char *mod, const char *fxn)
{
	if (pcall_result == 0)
		return;

	const char *err_type;
	switch (pcall_result) {
	case LUA_ERRRUN:
		err_type = "Runtime";
		break;
	case LUA_ERRMEM:
		err_type = "OOM";
		break;
	case LUA_ERRERR:
		err_type = "Double fault";
		break;
	default:
		err_type = "Unknown";
	}

	if (!mod)
		mod = "??";

	if (!fxn)
		fxn = "??";

	const char *err_descr = lua_tostring(L, -1);
	if (!err_descr)
		err_descr = "<no description>";

	char buf[256];
	snprintf(buf, sizeof(buf), "%s error from mod '%s' in callback %s(): ",
		err_type, mod, fxn);

	std::string err_msg(buf);
	err_msg += err_descr;

	if (pcall_result == LUA_ERRMEM) {
		err_msg += "\nCurrent Lua memory usage: "
			+ itos(lua_gc(L, LUA_GCCOUNT, 0) >> 10) + " MB";
	}

	throw LuaError(err_msg);
}

// Push the list of callbacks (a lua table).
// Then push nargs arguments.
// Then call this function, which
// - runs the callbacks
// - replaces the table and arguments with the return value,
//     computed depending on mode
void script_run_callbacks_f(lua_State *L, int nargs,
	RunCallbacksMode mode, const char *fxn)
{
	FATAL_ERROR_IF(lua_gettop(L) < nargs + 1, "Not enough arguments");

	// Insert error handler
	PUSH_ERROR_HANDLER(L);
	int error_handler = lua_gettop(L) - nargs - 1;
	lua_insert(L, error_handler);

	// Insert run_callbacks between error handler and table
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "run_callbacks");
	lua_remove(L, -2);
	lua_insert(L, error_handler + 1);

	// Insert mode after table
	lua_pushnumber(L, (int) mode);
	lua_insert(L, error_handler + 3);

	// Stack now looks like this:
	// ... <error handler> <run_callbacks> <table> <mode> <arg#1> <arg#2> ... <arg#n>

	int result = lua_pcall(L, nargs + 2, 1, error_handler);
	if (result != 0)
		script_error(L, result, NULL, fxn);

	lua_remove(L, error_handler);
}

void log_deprecated(lua_State *L, const std::string &message)
{
	static bool configured = false;
	static bool do_log     = false;
	static bool do_error   = false;

	// Only read settings on first call
	if (!configured) {
		std::string value = g_settings->get("deprecated_lua_api_handling");
		if (value == "log") {
			do_log = true;
		} else if (value == "error") {
			do_log   = true;
			do_error = true;
		}
	}

	if (do_log) {
		warningstream << message;
		if (L) { // L can be NULL if we get called from scripting_game.cpp
			lua_Debug ar;
			FATAL_ERROR_IF(!lua_getstack(L, 2, &ar), "lua_getstack() failed");
			FATAL_ERROR_IF(!lua_getinfo(L, "Sl", &ar), "lua_getinfo() failed");
			warningstream << " (at " << ar.short_src << ":" << ar.currentline << ")";
		}
		warningstream << std::endl;

		if (L) {
			if (do_error)
				script_error(L, LUA_ERRRUN, NULL, NULL);
			else
				infostream << script_get_backtrace(L) << std::endl;
		}
	}
}