diff options
Diffstat (limited to 'Library/PasswordLib/ConsolePassword.c')
| -rw-r--r-- | Library/PasswordLib/ConsolePassword.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/Library/PasswordLib/ConsolePassword.c b/Library/PasswordLib/ConsolePassword.c new file mode 100644 index 0000000..c195b48 --- /dev/null +++ b/Library/PasswordLib/ConsolePassword.c @@ -0,0 +1,128 @@ +/** @file
+Ask password from console
+
+Copyright (c) 2016. Disk Cryptography Services for EFI (DCS), Alex Kolotnikov
+Copyright (c) 2016. VeraCrypt, Mounir IDRASSI
+
+This program and the accompanying materials
+are licensed and made available under the terms and conditions
+of the GNU Lesser General Public License, version 3.0 (LGPL-3.0).
+
+The full text of the license may be found at
+https://opensource.org/licenses/LGPL-3.0
+**/
+
+#include <Uefi.h>
+#include "Library/CommonLib.h"
+#include "Library/PasswordLib.h"
+#include <Library/UefiBootServicesTableLib.h>
+
+VOID
+AskConsolePwdInt(
+ OUT UINT32 *length,
+ OUT CHAR8 *asciiLine,
+ OUT INT32 *retCode,
+ IN UINTN line_max,
+ IN UINT8 show
+ )
+{
+ EFI_INPUT_KEY key;
+ UINT32 count = 0;
+ UINTN i;
+
+ gST->ConOut->EnableCursor(gST->ConOut, TRUE);
+
+ do {
+ key = GetKey();
+ // Remove dirty chars 0.1s
+ FlushInputDelay(100000);
+
+ if (key.ScanCode == SCAN_ESC) {
+ *retCode = AskPwdRetCancel;
+ break;
+ }
+
+ if (key.ScanCode == SCAN_F2) {
+ *retCode = AskPwdRetChange;
+ break;
+ }
+
+ if (key.ScanCode == SCAN_F5) {
+ show = show ? 0 : 1;
+ if (show) {
+ for (i = 0; i < count; i++) {
+ OUT_PRINT(L"\b");
+ }
+ OUT_PRINT(L"%a", asciiLine);
+ }
+ else {
+ for (i = 0; i < count; i++) {
+ OUT_PRINT(L"\b");
+ }
+ for (i = 0; i < count; i++) {
+ OUT_PRINT(L"*");
+ }
+ }
+ }
+
+ if (key.ScanCode == SCAN_F7) {
+ gPlatformLocked = gPlatformLocked ? 0 : 1;
+ ConsoleShowTip(gPlatformLocked ? L" Platform locked!" : L" Platform unlocked!", 10000000);
+ }
+
+ if (key.ScanCode == SCAN_F8) {
+ gTPMLocked = gTPMLocked ? 0 : 1;
+ ConsoleShowTip(gTPMLocked ? L" TPM locked!" : L" TPM unlocked!", 10000000);
+ }
+
+
+ if (key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
+ *retCode = AskPwdRetLogin;
+ break;
+ }
+
+ if ((count >= line_max &&
+ key.UnicodeChar != CHAR_BACKSPACE) ||
+ key.UnicodeChar == CHAR_NULL ||
+ key.UnicodeChar == CHAR_TAB ||
+ key.UnicodeChar == CHAR_LINEFEED ||
+ key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
+ continue;
+ }
+
+ if (count == 0 && key.UnicodeChar == CHAR_BACKSPACE) {
+ continue;
+ }
+ else if (key.UnicodeChar == CHAR_BACKSPACE) {
+ OUT_PRINT(L"\b \b");
+ if (asciiLine != NULL) asciiLine[--count] = '\0';
+ continue;
+ }
+
+ // check size of line
+ if (count < line_max - 1) {
+ if (show) {
+ OUT_PRINT(L"%c", key.UnicodeChar);
+ }
+ else {
+ OUT_PRINT(L"*");
+ }
+ // save char
+ if (asciiLine != NULL) {
+ asciiLine[count++] = (CHAR8)key.UnicodeChar;
+ asciiLine[count] = 0;
+ }
+ }
+ } while (key.UnicodeChar != CHAR_CARRIAGE_RETURN);
+
+ if (length != NULL) *length = count;
+ // Set end of line
+ if (asciiLine != NULL) {
+ asciiLine[count] = '\0';
+ for (i = 0; i < count; i++) {
+ OUT_PRINT(L"\b \b");
+ }
+ OUT_PRINT(L"*");
+ }
+ OUT_PRINT(L"\n");
+}
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