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[REGEDIT] Use <strsafe.h> functions strictly (#5825)

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Use safer functions for buffer manipulation to avoid buffer overflow/overrun.
CORE-18876
This commit is contained in:
Katayama Hirofumi MZ 2023-10-26 10:09:31 +09:00 committed by GitHub
parent 9360423cc2
commit 8cef980ab9
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 38 additions and 34 deletions
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9
base/applications/regedit/childwnd.c
View file

@ -177,7 +177,7 @@ static void SuggestKeys(HKEY hRootKey, LPCWSTR pszKeyPath, LPWSTR pszSuggestions
RegCloseKey(hOtherKey);
bFound = TRUE;
wcscpy(szLastFound, szBuffer);
StringCbCopyW(szLastFound, sizeof(szLastFound), szBuffer);
pszKeyPath = szLastFound;
}
}
@ -258,10 +258,11 @@ UpdateAddress(HTREEITEM hItem, HKEY hRootKey, LPCWSTR pszPath, BOOL bSelectNone)
if (fullPath)
{
/* set (correct) the address bar text */
if (keyPath[0] != L'\0')
swprintf(fullPath, L"%s%s%s", rootName, keyPath[0]==L'\\'?L"":L"\\", keyPath);
if (keyPath[0] != UNICODE_NULL)
StringCbPrintfW(fullPath, cbFullPath, L"%s%s%s", rootName,
((keyPath[0] == L'\\') ? L"" : L"\\"), keyPath);
else
fullPath = wcscpy(fullPath, rootName);
StringCbCopyW(fullPath, cbFullPath, rootName);
SendMessageW(hStatusBar, SB_SETTEXTW, 0, (LPARAM)fullPath);
SendMessageW(g_pChildWnd->hAddressBarWnd, WM_SETTEXT, 0, (LPARAM)fullPath);

26
base/applications/regedit/edit.c
View file

@ -50,10 +50,10 @@ void error(HWND hwnd, INT resId, ...)
hInstance = GetModuleHandle(0);
if (!LoadStringW(hInstance, IDS_ERROR, title, ARRAY_SIZE(title)))
wcscpy(title, L"Error");
StringCbCopyW(title, sizeof(title), L"Error");
if (!LoadStringW(hInstance, resId, errfmt, ARRAY_SIZE(errfmt)))
wcscpy(errfmt, L"Unknown error string!");
StringCbCopyW(errfmt, sizeof(errfmt), L"Unknown error string!");
va_start(ap, resId);
_vsnwprintf(errstr, ARRAY_SIZE(errstr), errfmt, ap);
@ -66,7 +66,7 @@ static void error_code_messagebox(HWND hwnd, DWORD error_code)
{
WCHAR title[256];
if (!LoadStringW(hInst, IDS_ERROR, title, ARRAY_SIZE(title)))
wcscpy(title, L"Error");
StringCbCopyW(title, sizeof(title), L"Error");
ErrorMessageBox(hwnd, title, error_code);
}
@ -81,13 +81,13 @@ void warning(HWND hwnd, INT resId, ...)
hInstance = GetModuleHandle(0);
if (!LoadStringW(hInstance, IDS_WARNING, title, ARRAY_SIZE(title)))
wcscpy(title, L"Warning");
StringCbCopyW(title, sizeof(title), L"Warning");
if (!LoadStringW(hInstance, resId, errfmt, ARRAY_SIZE(errfmt)))
wcscpy(errfmt, L"Unknown error string!");
StringCbCopyW(errfmt, sizeof(errfmt), L"Unknown error string!");
va_start(ap, resId);
_vsnwprintf(errstr, ARRAY_SIZE(errstr), errfmt, ap);
StringCbVPrintfW(errstr, sizeof(errstr), errfmt, ap);
va_end(ap);
MessageBoxW(hwnd, errstr, title, MB_OK | MB_ICONSTOP);
@ -304,7 +304,7 @@ INT_PTR CALLBACK modify_dword_dlgproc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LP
SetDlgItemTextW(hwndDlg, IDC_VALUE_NAME, buffer);
}
CheckRadioButton (hwndDlg, IDC_FORMAT_HEX, IDC_FORMAT_DEC, IDC_FORMAT_HEX);
swprintf(ValueString, L"%lx", dwordValueData);
StringCbPrintfW(ValueString, sizeof(ValueString), L"%lx", dwordValueData);
SetDlgItemTextW(hwndDlg, IDC_VALUE_DATA, ValueString);
SendMessage(GetDlgItem(hwndDlg, IDC_VALUE_DATA), EM_SETSEL, 0, -1);
SetFocus(GetDlgItem(hwndDlg, IDC_VALUE_DATA));
@ -327,7 +327,7 @@ INT_PTR CALLBACK modify_dword_dlgproc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LP
}
}
}
swprintf(ValueString, L"%lx", Value);
StringCbPrintfW(ValueString, sizeof(ValueString), L"%lx", Value);
SetDlgItemTextW(hwndDlg, IDC_VALUE_DATA, ValueString);
return TRUE;
}
@ -347,7 +347,7 @@ INT_PTR CALLBACK modify_dword_dlgproc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LP
}
}
}
swprintf(ValueString, L"%lu", Value);
StringCbPrintfW(ValueString, sizeof(ValueString), L"%lu", Value);
SetDlgItemTextW(hwndDlg, IDC_VALUE_DATA, ValueString);
return TRUE;
}
@ -1491,6 +1491,7 @@ LONG RenameKey(HKEY hKey, LPCWSTR lpSubKey, LPCWSTR lpNewName)
LPCWSTR s;
LPWSTR lpNewSubKey = NULL;
LONG Ret = 0;
SIZE_T cbNewSubKey;
if (!lpSubKey)
return Ret;
@ -1499,11 +1500,12 @@ LONG RenameKey(HKEY hKey, LPCWSTR lpSubKey, LPCWSTR lpNewName)
if (s)
{
s++;
lpNewSubKey = (LPWSTR) HeapAlloc(GetProcessHeap(), 0, (s - lpSubKey + wcslen(lpNewName) + 1) * sizeof(WCHAR));
cbNewSubKey = (s - lpSubKey + wcslen(lpNewName) + 1) * sizeof(WCHAR);
lpNewSubKey = (LPWSTR) HeapAlloc(GetProcessHeap(), 0, cbNewSubKey);
if (lpNewSubKey != NULL)
{
memcpy(lpNewSubKey, lpSubKey, (s - lpSubKey) * sizeof(WCHAR));
wcscpy(lpNewSubKey + (s - lpSubKey), lpNewName);
StringCbCopyNW(lpNewSubKey, cbNewSubKey, lpSubKey, (s - lpSubKey) * sizeof(WCHAR));
StringCbCatW(lpNewSubKey, cbNewSubKey, lpNewName);
lpNewName = lpNewSubKey;
}
else

21
base/applications/regedit/find.c
View file

@ -144,7 +144,7 @@ BOOL RegFindRecurse(
if(wcslen(pszSubKey) >= _countof(szSubKey))
return FALSE;
wcscpy(szSubKey, pszSubKey);
StringCbCopyW(szSubKey, sizeof(szSubKey), pszSubKey);
hSubKey = NULL;
lResult = RegOpenKeyExW(hKey, szSubKey, 0, KEY_ALL_ACCESS, &hSubKey);
@ -304,14 +304,14 @@ BOOL RegFindRecurse(
ppszFoundValueName))
{
LPWSTR psz = *ppszFoundSubKey;
*ppszFoundSubKey = malloc(
(wcslen(szSubKey) + wcslen(psz) + 2) * sizeof(WCHAR));
SIZE_T cbFoundSubKey = (wcslen(szSubKey) + wcslen(psz) + 2) * sizeof(WCHAR);
*ppszFoundSubKey = malloc(cbFoundSubKey);
if (*ppszFoundSubKey == NULL)
goto err;
if (szSubKey[0])
{
wcscpy(*ppszFoundSubKey, szSubKey);
wcscat(*ppszFoundSubKey, s_backslash);
StringCbCopyW(*ppszFoundSubKey, cbFoundSubKey, szSubKey);
StringCbCatW(*ppszFoundSubKey, cbFoundSubKey, s_backslash);
}
else
**ppszFoundSubKey = 0;
@ -368,7 +368,7 @@ BOOL RegFindWalk(
ppszFoundValueName))
return TRUE;
wcscpy(szSubKey, pszSubKey);
StringCbCopyW(szSubKey, sizeof(szSubKey), pszSubKey);
while(szSubKey[0] != 0)
{
if (DoEvents())
@ -460,15 +460,14 @@ BOOL RegFindWalk(
ppszFoundSubKey, ppszFoundValueName))
{
LPWSTR psz = *ppszFoundSubKey;
*ppszFoundSubKey = malloc(
(wcslen(szSubKey) + wcslen(psz) + 2) *
sizeof(WCHAR));
SIZE_T cbFoundSubKey = (wcslen(szSubKey) + wcslen(psz) + 2) * sizeof(WCHAR);
*ppszFoundSubKey = malloc(cbFoundSubKey);
if (*ppszFoundSubKey == NULL)
goto err;
if (szSubKey[0])
{
wcscpy(*ppszFoundSubKey, szSubKey);
wcscat(*ppszFoundSubKey, s_backslash);
StringCbCopyW(*ppszFoundSubKey, cbFoundSubKey, szSubKey);
StringCbCatW(*ppszFoundSubKey, cbFoundSubKey, s_backslash);
}
else
**ppszFoundSubKey = 0;

8
base/applications/regedit/framewnd.c
View file

@ -138,7 +138,7 @@ static void OnMenuSelect(HWND hWnd, UINT nItemID, UINT nFlags, HMENU hSysMenu)
{
WCHAR str[100];
wcscpy(str, L"");
str[0] = UNICODE_NULL;
if (nFlags & MF_POPUP)
{
if (hSysMenu != GetMenu(hWnd))
@ -814,6 +814,7 @@ BOOL CopyKeyName(HWND hWnd, HKEY hRootKey, LPCWSTR keyName)
WCHAR szBuffer[512];
HGLOBAL hGlobal;
LPWSTR s;
SIZE_T cbGlobal;
if (!OpenClipboard(hWnd))
goto done;
@ -825,12 +826,13 @@ BOOL CopyKeyName(HWND hWnd, HKEY hRootKey, LPCWSTR keyName)
if (!GetKeyName(szBuffer, ARRAY_SIZE(szBuffer), hRootKey, keyName))
goto done;
hGlobal = GlobalAlloc(GMEM_MOVEABLE, (wcslen(szBuffer) + 1) * sizeof(WCHAR));
cbGlobal = (wcslen(szBuffer) + 1) * sizeof(WCHAR);
hGlobal = GlobalAlloc(GMEM_MOVEABLE, cbGlobal);
if (!hGlobal)
goto done;
s = GlobalLock(hGlobal);
wcscpy(s, szBuffer);
StringCbCopyW(s, cbGlobal, szBuffer);
GlobalUnlock(hGlobal);
SetClipboardData(CF_UNICODETEXT, hGlobal);

3
base/applications/regedit/security.c
View file

@ -782,8 +782,7 @@ CRegKeySecurity_fnConstructor(LPWSTR lpRegKey,
obj->ObjectInfo = *ObjectInfo;
obj->Btn = Btn;
obj->hRootKey = hRootKey;
wcscpy(obj->szRegKey,
lpRegKey);
StringCbCopyW(obj->szRegKey, sizeof(obj->szRegKey), lpRegKey);
}
else
SetLastError(ERROR_NOT_ENOUGH_MEMORY);

5
base/applications/regedit/txtproc.c
View file

@ -194,8 +194,9 @@ static WCHAR *
txt_build_subkey_path(LPCWSTR path, DWORD path_len, LPCWSTR subkey_name, DWORD subkey_len)
{
WCHAR *subkey_path;
subkey_path = malloc((path_len + subkey_len + 2) * sizeof(WCHAR));
swprintf(subkey_path, L"%s\\%s", path, subkey_name);
SIZE_T cb_subkey_path = (path_len + subkey_len + 2) * sizeof(WCHAR);
subkey_path = malloc(cb_subkey_path);
StringCbPrintfW(subkey_path, cb_subkey_path, L"%s\\%s", path, subkey_name);
return subkey_path;
}