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/**
* This file is part of Hercules.
* http://herc.ws - http://github.com/HerculesWS/Hercules
*
* Copyright (C) 2012-2020 Hercules Dev Team
* Copyright (C) Athena Dev Teams
*
* Hercules is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define HERCULES_CORE
#include "nullpo.h"
#include "common/showmsg.h"
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_LIBBACKTRACE
#include "libbacktrace/backtrace.h"
#include "libbacktrace/backtrace-supported.h"
#elif defined(HAVE_EXECINFO)
#include <execinfo.h>
#endif // HAVE_LIBBACKTRACE
static struct nullpo_interface nullpo_s;
struct nullpo_interface *nullpo;
#ifdef HAVE_LIBBACKTRACE
static void nullpo_error_callback(void *data, const char *msg, int errnum)
{
ShowError("Error: %s (%d)", msg, errnum);
}
static int nullpo_print_callback(void *data, uintptr_t pc, const char *filename, int lineno, const char *function)
{
ShowError("0x%lx %s\n",
(unsigned long) pc,
function == NULL ? "???" : function);
ShowError("\t%s:%d\n",
filename == NULL ? "???" : filename,
lineno);
return 0;
}
static void nullpo_backtrace_print(struct backtrace_state *state)
{
backtrace_full(state, 0, nullpo_print_callback, nullpo_error_callback, state);
}
#endif // HAVE_LIBBACKTRACE
/**
* Reports failed assertions or NULL pointers
*
* @param file Source file where the error was detected
* @param line Line
* @param func Function
* @param targetname Name of the checked symbol
* @param title Message title to display (i.e. failed assertion or nullpo info)
*/
static void assert_report(const char *file, int line, const char *func, const char *targetname, const char *title)
{
#if !defined(HAVE_LIBBACKTRACE) && defined(HAVE_EXECINFO)
void *array[10];
int size;
char **strings;
int i;
#endif // !defined(HAVE_LIBBACKTRACE) && defined(HAVE_EXECINFO)
if (file == NULL)
file = "??";
if (func == NULL || *func == '\0')
func = "unknown";
ShowError("--- %s --------------------------------------------\n", title);
ShowError("%s:%d: '%s' in function `%s'\n", file, line, targetname, func);
#ifdef HAVE_LIBBACKTRACE
struct backtrace_state *state = backtrace_create_state("hercules", BACKTRACE_SUPPORTS_THREADS, nullpo_error_callback, NULL);
nullpo_backtrace_print(state);
#elif defined(HAVE_EXECINFO)
size = (int)backtrace(array, 10);
strings = backtrace_symbols(array, size);
for (i = 0; i < size; i++)
ShowError("%s\n", strings[i]);
free(strings);
#endif // HAVE_LIBBACKTRACE
ShowError("--- end %s ----------------------------------------\n", title);
}
/**
*
**/
void nullpo_defaults(void)
{
nullpo = &nullpo_s;
nullpo->assert_report = assert_report;
}
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