diff options
| -rw-r--r-- | lib/efi_loader/efi_console.c | 104 |
1 files changed, 94 insertions, 10 deletions
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c index 3cb580e3ed..d0e8617d0d 100644 --- a/lib/efi_loader/efi_console.c +++ b/lib/efi_loader/efi_console.c @@ -361,6 +361,48 @@ static efi_status_t EFIAPI efi_cin_reset( return EFI_EXIT(EFI_UNSUPPORTED); } +/* + * Analyze modifiers (shift, alt, ctrl) for function keys. + * This gets called when we have already parsed CSI. + * + * @modifiers: bitmask (shift, alt, ctrl) + * @return: the unmodified code + */ +static char skip_modifiers(int *modifiers) +{ + char c, mod = 0, ret = 0; + + c = getc(); + + if (c != ';') { + ret = c; + if (c == '~') + goto out; + c = getc(); + } + for (;;) { + switch (c) { + case '0'...'9': + mod *= 10; + mod += c - '0'; + /* fall through */ + case ';': + c = getc(); + break; + default: + goto out; + } + } +out: + if (mod) + --mod; + if (modifiers) + *modifiers = mod; + if (!ret) + ret = c; + return ret; +} + static efi_status_t EFIAPI efi_cin_read_key_stroke( struct efi_simple_input_interface *this, struct efi_input_key *key) @@ -383,14 +425,21 @@ static efi_status_t EFIAPI efi_cin_read_key_stroke( ch = getc(); if (ch == cESC) { - /* Escape Sequence */ + /* + * Xterm Control Sequences + * https://www.xfree86.org/4.8.0/ctlseqs.html + */ ch = getc(); switch (ch) { case cESC: /* ESC */ pressed_key.scan_code = 23; break; case 'O': /* F1 - F4 */ - pressed_key.scan_code = getc() - 'P' + 11; + ch = getc(); + /* skip modifiers */ + if (ch <= '9') + ch = getc(); + pressed_key.scan_code = ch - 'P' + 11; break; case 'a'...'z': ch = ch - 'a'; @@ -407,17 +456,51 @@ static efi_status_t EFIAPI efi_cin_read_key_stroke( case 'H': /* Home */ pressed_key.scan_code = 5; break; - case '1': /* F5 - F8 */ - pressed_key.scan_code = getc() - '0' + 11; - getc(); + case '1': + ch = skip_modifiers(NULL); + switch (ch) { + case '1'...'5': /* F1 - F5 */ + pressed_key.scan_code = ch - '1' + 11; + break; + case '7'...'9': /* F6 - F8 */ + pressed_key.scan_code = ch - '7' + 16; + break; + case 'A'...'D': /* up, down right, left */ + pressed_key.scan_code = ch - 'A' + 1; + break; + case 'F': + pressed_key.scan_code = 6; /* End */ + break; + case 'H': + pressed_key.scan_code = 5; /* Home */ + break; + } break; - case '2': /* F9 - F12 */ - pressed_key.scan_code = getc() - '0' + 19; - getc(); + case '2': + ch = skip_modifiers(NULL); + switch (ch) { + case '0'...'1': /* F9 - F10 */ + pressed_key.scan_code = ch - '0' + 19; + break; + case '3'...'4': /* F11 - F12 */ + pressed_key.scan_code = ch - '3' + 21; + break; + case '~': /* INS */ + pressed_key.scan_code = 7; + break; + } break; case '3': /* DEL */ pressed_key.scan_code = 8; - getc(); + skip_modifiers(NULL); + break; + case '5': /* PG UP */ + pressed_key.scan_code = 9; + skip_modifiers(NULL); + break; + case '6': /* PG DOWN */ + pressed_key.scan_code = 10; + skip_modifiers(NULL); break; } break; @@ -426,7 +509,8 @@ static efi_status_t EFIAPI efi_cin_read_key_stroke( /* Backspace */ ch = 0x08; } - pressed_key.unicode_char = ch; + if (!pressed_key.scan_code) + pressed_key.unicode_char = ch; *key = pressed_key; return EFI_EXIT(EFI_SUCCESS); |