VeraCrypt
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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2019-10-27 00:00:07 (GMT)
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2019-10-27 00:05:00 (GMT)
commitb1b692d4a3f1e84d5a0f18cb78a29ff754f2bf85 (patch)
tree396e7b7e848b7f2365802709e41b40b3294d11e4 /src/Mount
parent2722b465302626c2231f2d76e927bce3a9ccda4f (diff)
downloadVeraCrypt-b1b692d4a3f1e84d5a0f18cb78a29ff754f2bf85.zip
VeraCrypt-b1b692d4a3f1e84d5a0f18cb78a29ff754f2bf85.tar.gz
Windows: Only update boot configuration on disk if the user actually changed something in the UI
Diffstat (limited to 'src/Mount')
-rw-r--r--src/Mount/Mount.c54
1 files changed, 29 insertions, 25 deletions
diff --git a/src/Mount/Mount.c b/src/Mount/Mount.c
index bde729e..686a83b 100644
--- a/src/Mount/Mount.c
+++ b/src/Mount/Mount.c
@@ -11599,6 +11599,8 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
{
WORD lw = LOWORD (wParam);
static std::string platforminfo;
+ static byte currentUserConfig;
+ static string currentCustomUserMessage;
switch (msg)
{
@@ -11640,6 +11642,10 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
return 1;
}
+ // we store current configuration in order to be able to detect if user changed it or not after clicking OK
+ currentUserConfig = userConfig;
+ currentCustomUserMessage = customUserMessage;
+
if (bootLoaderVersion != VERSION_NUM)
Warning ("BOOT_LOADER_VERSION_INCORRECT_PREFERENCES", hwndDlg);
@@ -11709,11 +11715,16 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
{
try
{
- std::string dcsprop = ReadESPFile (L"\\EFI\\VeraCrypt\\DcsProp", true);
+ std::string currentDcsprop = ReadESPFile (L"\\EFI\\VeraCrypt\\DcsProp", true);
+ std::string dcsprop = currentDcsprop;
while (TextEditDialogBox(FALSE, hwndDlg, GetString ("BOOT_LOADER_CONFIGURATION_FILE"), dcsprop) == IDOK)
{
- if (validateDcsPropXml (dcsprop.c_str()))
+ if (dcsprop == currentDcsprop)
+ {
+ break;
+ }
+ else if (validateDcsPropXml (dcsprop.c_str()))
{
WriteESPFile (L"\\EFI\\VeraCrypt\\DcsProp", (LPBYTE) dcsprop.c_str(), (DWORD) dcsprop.size(), true);
break;
@@ -11753,17 +11764,7 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
if (!bSystemIsGPT)
GetDlgItemTextA (hwndDlg, IDC_CUSTOM_BOOT_LOADER_MESSAGE, customUserMessage, sizeof (customUserMessage));
- byte userConfig;
- try
- {
- if (!BootEncObj->ReadBootSectorConfig (nullptr, 0, &userConfig))
- return 1;
- }
- catch (Exception &e)
- {
- e.Show (hwndDlg);
- return 1;
- }
+ byte userConfig = currentUserConfig;
if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_PIM_PROMPT))
userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_PIM;
@@ -11772,22 +11773,22 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
if (bSystemIsGPT)
{
- if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_HASH_PROMPT))
- userConfig |= TC_BOOT_USER_CFG_FLAG_STORE_HASH;
- else
- userConfig &= ~TC_BOOT_USER_CFG_FLAG_STORE_HASH;
+ if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_HASH_PROMPT))
+ userConfig |= TC_BOOT_USER_CFG_FLAG_STORE_HASH;
+ else
+ userConfig &= ~TC_BOOT_USER_CFG_FLAG_STORE_HASH;
}
else
{
if (IsDlgButtonChecked (hwndDlg, IDC_DISABLE_BOOT_LOADER_OUTPUT))
- userConfig |= TC_BOOT_USER_CFG_FLAG_SILENT_MODE;
- else
- userConfig &= ~TC_BOOT_USER_CFG_FLAG_SILENT_MODE;
+ userConfig |= TC_BOOT_USER_CFG_FLAG_SILENT_MODE;
+ else
+ userConfig &= ~TC_BOOT_USER_CFG_FLAG_SILENT_MODE;
- if (!IsDlgButtonChecked (hwndDlg, IDC_ALLOW_ESC_PBA_BYPASS))
- userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_ESC;
- else
- userConfig &= ~TC_BOOT_USER_CFG_FLAG_DISABLE_ESC;
+ if (!IsDlgButtonChecked (hwndDlg, IDC_ALLOW_ESC_PBA_BYPASS))
+ userConfig |= TC_BOOT_USER_CFG_FLAG_DISABLE_ESC;
+ else
+ userConfig &= ~TC_BOOT_USER_CFG_FLAG_DISABLE_ESC;
}
try
@@ -11807,7 +11808,10 @@ static BOOL CALLBACK BootLoaderPreferencesDlgProc (HWND hwndDlg, UINT msg, WPARA
return 1;
}
- BootEncObj->WriteBootSectorUserConfig (userConfig, customUserMessage, prop.volumePim, prop.pkcs5);
+ // only write boot configuration if something changed
+ if ((userConfig != currentUserConfig) || (!bSystemIsGPT && (customUserMessage != currentCustomUserMessage)))
+ BootEncObj->WriteBootSectorUserConfig (userConfig, customUserMessage, prop.volumePim, prop.pkcs5);
+
SetDriverConfigurationFlag (TC_DRIVER_CONFIG_CACHE_BOOT_PASSWORD, bPasswordCacheEnabled);
SetDriverConfigurationFlag (TC_DRIVER_CONFIG_CACHE_BOOT_PIM, (bPasswordCacheEnabled && bPimCacheEnabled)? TRUE : FALSE);
SetDriverConfigurationFlag (TC_DRIVER_CONFIG_DISABLE_EVIL_MAID_ATTACK_DETECTION, IsDlgButtonChecked (hwndDlg, IDC_DISABLE_EVIL_MAID_ATTACK_DETECTION));