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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (c) 2012-18 Miranda NG team (https://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program 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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
#define BLOCK_ALLOCED 0xABBABABA
#define BLOCK_FREED 0xDEADBEEF
static int CheckBlock(void* blk)
{
int result = FALSE;
char* p = (char*)blk - sizeof(DWORD)*2;
DWORD size, *b, *e;
__try
{
size = *(DWORD*)p;
b = (DWORD*)&p[ sizeof(DWORD) ];
e = (DWORD*)&p[ sizeof(DWORD)*2 + size ];
if (*b != BLOCK_ALLOCED || *e != BLOCK_ALLOCED)
{
if (*b == BLOCK_FREED && *e == BLOCK_FREED)
OutputDebugStringA("memory block is already deleted\n");
else
OutputDebugStringA("memory block is corrupted\n");
#if defined(_DEBUG)
DebugBreak();
#endif
}
else result = TRUE;
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
OutputDebugStringA("access violation during checking memory block\n");
#if defined(_DEBUG)
DebugBreak();
#endif
}
return result;
}
/******************************************************************************/
MIR_C_CORE_DLL(void*) mir_alloc(size_t size)
{
if (size == 0)
return nullptr;
char *p = (char*)malloc(size + sizeof(DWORD)* 3);
if (p == nullptr) {
OutputDebugStringA("memory overflow\n");
#if defined(_DEBUG)
DebugBreak();
#endif
return nullptr;
}
*(DWORD*)p = (DWORD)size;
*(DWORD*)&p[sizeof(DWORD)] = BLOCK_ALLOCED;
*(DWORD*)&p[size + sizeof(DWORD)*2] = BLOCK_ALLOCED;
return p + sizeof(DWORD)* 2;
}
/******************************************************************************/
MIR_C_CORE_DLL(void*) mir_calloc(size_t size)
{
void* p = mir_alloc(size);
if (p != nullptr)
memset(p, 0, size);
return p;
}
/******************************************************************************/
MIR_C_CORE_DLL(void*) mir_realloc(void* ptr, size_t size)
{
char *p;
if (ptr != nullptr) {
if (!CheckBlock(ptr))
return nullptr;
p = (char*)ptr - sizeof(DWORD)*2;
}
else p = nullptr;
p = (char*)realloc(p, size + sizeof(DWORD)*3);
if (p == nullptr) {
OutputDebugStringA("memory overflow\n");
#if defined(_DEBUG)
DebugBreak();
#endif
return nullptr;
}
*(DWORD*)p = (DWORD)size;
*(DWORD*)&p[sizeof(DWORD)] = BLOCK_ALLOCED;
*(DWORD*)&p[size + sizeof(DWORD)*2] = BLOCK_ALLOCED;
return p + sizeof(DWORD)*2;
}
/******************************************************************************/
MIR_C_CORE_DLL(void) mir_free(void* ptr)
{
char* p;
DWORD size;
if (ptr == nullptr)
return;
if (!CheckBlock(ptr))
return;
p = (char*)ptr - sizeof(DWORD)*2;
size = *(DWORD*)p;
*(DWORD*)&p[sizeof(DWORD)] = BLOCK_FREED;
*(DWORD*)&p[size + sizeof(DWORD)*2] = BLOCK_FREED;
free(p);
}
/******************************************************************************/
MIR_CORE_DLL(char*) mir_strdup(const char *str)
{
if (str == nullptr)
return nullptr;
char *p = (char*)mir_alloc(strlen(str)+1);
if (p)
strcpy(p, str);
return p;
}
MIR_CORE_DLL(wchar_t*) mir_wstrdup(const wchar_t *str)
{
if (str == nullptr)
return nullptr;
wchar_t *p = (wchar_t*)mir_alloc(sizeof(wchar_t)*(wcslen(str)+1));
if (p)
wcscpy(p, str);
return p;
}
/******************************************************************************/
MIR_CORE_DLL(char*) mir_strndup(const char *str, size_t len)
{
if (str == nullptr || len == 0)
return nullptr;
char *p = (char*)mir_alloc(len+1);
if (p) {
memcpy(p, str, len);
p[len] = 0;
}
return p;
}
MIR_CORE_DLL(wchar_t*) mir_wstrndup(const wchar_t *str, size_t len)
{
if (str == nullptr || len == 0)
return nullptr;
wchar_t *p = (wchar_t*)mir_alloc(sizeof(wchar_t)*(len+1));
if (p) {
memcpy(p, str, sizeof(wchar_t)*len);
p[len] = 0;
}
return p;
}
/******************************************************************************/
MIR_CORE_DLL(int) mir_snprintf(char *buffer, size_t count, const char* fmt, ...)
{
va_list va;
va_start(va, fmt);
int len = _vsnprintf(buffer, count-1, fmt, va);
va_end(va);
buffer[count-1] = 0;
return len;
}
/******************************************************************************/
MIR_CORE_DLL(int) mir_snwprintf(wchar_t *buffer, size_t count, const wchar_t* fmt, ...)
{
va_list va;
va_start(va, fmt);
int len = _vsntprintf(buffer, count-1, fmt, va);
va_end(va);
buffer[count-1] = 0;
return len;
}
/******************************************************************************/
MIR_CORE_DLL(int) mir_vsnprintf(char *buffer, size_t count, const char* fmt, va_list va)
{
int len = _vsnprintf(buffer, count-1, fmt, va);
buffer[count-1] = 0;
return len;
}
/******************************************************************************/
MIR_CORE_DLL(int) mir_vsnwprintf(wchar_t *buffer, size_t count, const wchar_t* fmt, va_list va)
{
int len = _vsntprintf(buffer, count-1, fmt, va);
buffer[count-1] = 0;
return len;
}
/******************************************************************************/
MIR_CORE_DLL(wchar_t*) mir_a2u_cp(const char* src, int codepage)
{
if (src == nullptr)
return nullptr;
int cbLen = MultiByteToWideChar(codepage, 0, src, -1, nullptr, 0);
wchar_t* result = (wchar_t*)mir_alloc(sizeof(wchar_t)*(cbLen+1));
if (result == nullptr)
return nullptr;
MultiByteToWideChar(codepage, 0, src, -1, result, cbLen);
result[cbLen] = 0;
return result;
}
/******************************************************************************/
MIR_CORE_DLL(wchar_t*) mir_a2u(const char* src)
{
return mir_a2u_cp(src, Langpack_GetDefaultCodePage());
}
/******************************************************************************/
MIR_CORE_DLL(char*) mir_u2a_cp(const wchar_t* src, int codepage)
{
if (src == nullptr)
return nullptr;
int cbLen = WideCharToMultiByte(codepage, 0, src, -1, nullptr, 0, nullptr, nullptr);
char* result = (char*)mir_alloc(cbLen+1);
if (result == nullptr)
return nullptr;
WideCharToMultiByte(codepage, 0, src, -1, result, cbLen, nullptr, nullptr);
result[cbLen] = 0;
return result;
}
/******************************************************************************/
MIR_CORE_DLL(char*) mir_u2a(const wchar_t* src)
{
return mir_u2a_cp(src, Langpack_GetDefaultCodePage());
}
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