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MokManager: handle the error status from ReadKeyStroke

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On some machines, even though the key event was signaled, ReadKeyStroke
still got EFI_NOT_READY. This commit handles the error status to avoid
console_get_keystroke from returning unexpected keys.

Signed-off-by: Gary Ching-Pang Lin <glin@suse.com>

Conflicts:
	MokManager.c
This commit is contained in:
Gary Ching-Pang Lin 2013-12-03 15:52:02 +08:00 committed by Peter Jones
parent 53a8f8721c
commit 22254e2633
3 changed files with 33 additions and 14 deletions
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17
MokManager.c
View File

@ -488,13 +488,19 @@ static EFI_STATUS list_keys (void *KeyList, UINTN KeyListSize, CHAR16 *title)
return EFI_SUCCESS;
}
static UINT8 get_line (UINT32 *length, CHAR16 *line, UINT32 line_max, UINT8 show)
static EFI_STATUS get_line (UINT32 *length, CHAR16 *line, UINT32 line_max, UINT8 show)
{
EFI_INPUT_KEY key;
EFI_STATUS status;
unsigned int count = 0;
do {
key = console_get_keystroke();
status = console_get_keystroke(&key);
if (EFI_ERROR (status)) {
console_error(L"Failed to read the keystroke", status);
*length = 0;
return status;
}
if ((count >= line_max &&
key.UnicodeChar != CHAR_BACKSPACE) ||
@ -525,7 +531,7 @@ static UINT8 get_line (UINT32 *length, CHAR16 *line, UINT32 line_max, UINT8 show
*length = count;
return 1;
return EFI_SUCCESS;
}
static EFI_STATUS compute_pw_hash (void *Data, UINTN DataSize, UINT8 *password,
@ -989,6 +995,7 @@ static INTN mok_deletion_prompt (void *MokDel, UINTN MokDelSize)
static CHAR16 get_password_charater (CHAR16 *prompt)
{
SIMPLE_TEXT_OUTPUT_MODE SavedMode;
EFI_STATUS status;
CHAR16 *message[2];
CHAR16 character;
UINTN length;
@ -1003,7 +1010,9 @@ static CHAR16 get_password_charater (CHAR16 *prompt)
message[1] = NULL;
length = StrLen(message[0]);
console_print_box_at(message, -1, -length-4, -5, length+4, 3, 0, 1);
get_line(&pw_length, &character, 1, 0);
status = get_line(&pw_length, &character, 1, 0);
if (EFI_ERROR(status))
character = 0;
console_restore_mode(&SavedMode);

4
include/console.h
View File

@ -1,8 +1,8 @@
#ifndef _SHIM_LIB_CONSOLE_H
#define _SHIM_LIB_CONSOLE_H 1
EFI_INPUT_KEY
console_get_keystroke(void);
EFI_STATUS
console_get_keystroke(EFI_INPUT_KEY *key);
void
console_print_box_at(CHAR16 *str_arr[], int highlight, int start_col, int start_row, int size_cols, int size_rows, int offset, int lines);
void

26
lib/console.c
View File

@ -40,16 +40,18 @@ SetMem16(CHAR16 *dst, UINT32 n, CHAR16 c)
}
}
EFI_INPUT_KEY
console_get_keystroke(void)
EFI_STATUS
console_get_keystroke(EFI_INPUT_KEY *key)
{
EFI_INPUT_KEY key;
UINTN EventIndex;
EFI_STATUS status;
uefi_call_wrapper(BS->WaitForEvent, 3, 1, &ST->ConIn->WaitForKey, &EventIndex);
uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, &key);
do {
uefi_call_wrapper(BS->WaitForEvent, 3, 1, &ST->ConIn->WaitForKey, &EventIndex);
status = uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, key);
} while (status == EFI_NOT_READY);
return key;
return status;
}
void
@ -162,6 +164,8 @@ console_print_box(CHAR16 *str_arr[], int highlight)
{
SIMPLE_TEXT_OUTPUT_MODE SavedConsoleMode;
SIMPLE_TEXT_OUTPUT_INTERFACE *co = ST->ConOut;
EFI_INPUT_KEY key;
CopyMem(&SavedConsoleMode, co->Mode, sizeof(SavedConsoleMode));
uefi_call_wrapper(co->EnableCursor, 2, co, FALSE);
uefi_call_wrapper(co->SetAttribute, 2, co, EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE);
@ -169,7 +173,7 @@ console_print_box(CHAR16 *str_arr[], int highlight)
console_print_box_at(str_arr, highlight, 0, 0, -1, -1, 0,
count_lines(str_arr));
console_get_keystroke();
console_get_keystroke(&key);
uefi_call_wrapper(co->EnableCursor, 2, co, SavedConsoleMode.CursorVisible);
@ -184,6 +188,7 @@ console_select(CHAR16 *title[], CHAR16* selectors[], int start)
SIMPLE_TEXT_OUTPUT_MODE SavedConsoleMode;
SIMPLE_TEXT_OUTPUT_INTERFACE *co = ST->ConOut;
EFI_INPUT_KEY k;
EFI_STATUS status;
int selector;
int selector_lines = count_lines(selectors);
int selector_max_cols = 0;
@ -237,7 +242,12 @@ console_select(CHAR16 *title[], CHAR16* selectors[], int start)
size_cols, size_rows, 0, lines);
do {
k = console_get_keystroke();
status = console_get_keystroke(&k);
if (EFI_ERROR (status)) {
Print(L"Failed to read the keystroke: %r", status);
selector = -1;
break;
}
if (k.ScanCode == SCAN_ESC) {
selector = -1;