diff options
Diffstat (limited to 'firmware/lib/vboot_ui.c')
| -rw-r--r-- | firmware/lib/vboot_ui.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/firmware/lib/vboot_ui.c b/firmware/lib/vboot_ui.c index 65f47986..14f8aabe 100644 --- a/firmware/lib/vboot_ui.c +++ b/firmware/lib/vboot_ui.c @@ -227,6 +227,11 @@ VbError_t vb2_altfw_ui(struct vb2_context *ctx) return 0; } +static inline int is_vowel(uint32_t key) { + return key == 'A' || key == 'E' || key == 'I' || + key == 'O' || key == 'U'; +} + /* * Prompt the user to enter the vendor data */ @@ -262,13 +267,14 @@ VbError_t vb2_enter_vendor_data_ui(struct vb2_context *ctx, char *data_value) key = toupper(key); case '0'...'9': case 'A'...'Z': - if (len < VENDOR_DATA_LENGTH) { + if ((len > 0 && is_vowel(key)) || + len >= VENDOR_DATA_LENGTH) { + vb2_error_beep(VB_BEEP_NOT_ALLOWED); + } else { data_value[len++] = key; data_value[len] = '\0'; VbDisplayScreen(ctx, VB_SCREEN_SET_VENDOR_DATA, 1, &data); - } else { - vb2_error_beep(VB_BEEP_NOT_ALLOWED); } VB2_DEBUG("Vendor Data UI - vendor_data: %s\n", |