Commit Graph

14 Commits

Author SHA1 Message Date
Ben Hutchings 79e51b5c2d kconfig/nconf: Fix hang when editing symbol with a long prompt
Currently it is impossible to edit the value of a config symbol with a
prompt longer than (terminal width - 2) characters.  dialog_inputbox()
calculates a negative x-offset for the input window and newwin() fails
as this is invalid.  It also doesn't check for this failure, so it
busy-loops calling wgetch(NULL) which immediately returns -1.

The additions in the offset calculations also don't match the intended
size of the window.

Limit the window size and calculate the offset similarly to
show_scroll_win().

Cc: stable <stable@vger.kernel.org>
Fixes: 692d97c380 ("kconfig: new configuration interface (nconfig)")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
2016-12-11 12:26:42 +01:00
Dirk Gouders e0b42605e6 nconf: use function calls instead of ncurses' variables LINES and COLS
According to the documentation [1], LINES and COLS are initialized by
initscr(); it does not say anything about the behavior when windows are
resized.

Do not rely on the current implementation of ncurses that updates
these variables on resize, but use the propper function calls or macros
to get window dimensions.

The use of the variables in main() was OK, but for the sake of
consistency it was modified to use the macro getmaxyx().

[1] ncurses(3X)

Signed-off-by: Dirk Gouders <dirk@gouders.net>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[yann.morin.1998@free.fr: declare 'lines' and 'columns' on a single line]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2013-06-18 23:58:58 +02:00
Roland Eggner c5ffa130f3 nconf: function keys line, change background color for better readability
•  In function keys line descriptions black on darkblue are almost
   impossible to read.  Change colors to black on brown.

Signed-off-by: Roland Eggner <edvx1@systemanalysen.net>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-01-24 11:43:44 +01:00
Benjamin Poirier d68e818bc4 nconf: add u, d command keys in scroll windows
They function just like they do in less(1).
Also correct some discrepancy between the help text and the code wrt
function keys.

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-07-26 12:20:46 +02:00
Cheng Renquan 93072c3eca scripts/kconfig/nconf: add KEY_HOME / KEY_END for dialog_inputbox
to make it easier to locate begin/end when editing long strings;

Signed-off-by: Cheng Renquan <crquan@gmail.com>
Acked By: Nir Tzachar <nir.tzachar@gmail.com>
2011-09-09 14:40:08 +02:00
Cheng Renquan e631a57a19 scripts/kconfig/nconf: fix editing long strings
The original dialog_inputbox doesn't work with longer than prompt_width
strings, here fixed it in this way:
1) add variable cursor_form_win to record cursor of form_win,
   keep its value always between [0, prompt_width-1];
   reuse the original cursor_position as cursor of the string result,
   use (cursor_position-cursor_form_win) as begin offset to show part of
   the string in form_win;

Signed-off-by: Cheng Renquan <crquan@gmail.com>
Cc: Arnaud Lacombe <lacombar@gmail.com>
Cc: Nir Tzachar <nir.tzachar@gmail.com>
2011-09-09 14:40:08 +02:00
Cheng Renquan 5ea9f64ffc scripts/kconfig/nconf: dynamically alloc dialog_input_result
To support unlimited length string config items;

No check for realloc return value keeps code simple, and to be
consistent with other existing unchecked malloc in kconfig.

Signed-off-by: Cheng Renquan <crquan@gmail.com>
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
2011-09-09 14:40:08 +02:00
Cheng Renquan cd58a90fa6 scripts/kconfig/nconf: fix memmove's length arg
In case KEY_BACKSPACE / KEY_DC to delete a char, it memmove only
(len-cursor_position+1) bytes;
the default case is to insert a char, it should also memmove exactly
(len-cursor_position+1) bytes;

the original use of (len+1) is wrong and may access following memory
that doesn't belong to result, may cause SegFault in theory;

	case KEY_BACKSPACE:
		if (cursor_position > 0) {
			memmove(&result[cursor_position-1],
					&result[cursor_position],
					len-cursor_position+1);
			cursor_position--;
		}
		break;
	case KEY_DC:
		if (cursor_position >= 0 && cursor_position < len) {
			memmove(&result[cursor_position],
					&result[cursor_position+1],
					len-cursor_position+1);
		}
		break;
	default:
		if ((isgraph(res) || isspace(res)) &&
				len-2 < result_len) {
			/* insert the char at the proper position */
			memmove(&result[cursor_position+1],
					&result[cursor_position],
					len-cursor_position+1);
			result[cursor_position] = res;
			cursor_position++;
		}

Signed-off-by: Cheng Renquan <crquan@gmail.com>
Acked-by: Nir Tzachar <nir.tzachar@gmail.com>
2011-09-09 14:40:08 +02:00
Cheng Renquan 4e24dbfc26 scripts/kconfig/nconf: fix typo: unknow => unknown
Signed-off-by: Cheng Renquan <crquan@gmail.com>
Acked-by: Arnaud Lacombe <lacombar@gmail.com>
2011-09-09 14:40:08 +02:00
Arnaud Lacombe c24035b9ed kbuild: fix typo
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-08-17 11:00:43 +02:00
Nir Tzachar a72f3e2b82 nconfig: add search support
Remove the old hotkeys feature, and replace it by an interactive string
search.
From nconfig help:

Searching: pressing '/' triggers interactive search mode.
           nconfig performs a case insensitive search for the string
           in the menu prompts (no regex support).
           Pressing the up/down keys highlights the previous/next
           matching item. Backspace removes one character from the
           match string. Pressing either '/' again or ESC exits
           search mode. All other keys behave normally.

Miscellaneous other changes (including Rundy's and Justin's input).

Signed-off-by: Nir Tzachar <nir.tzachar@gmail.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-08-16 22:04:55 +02:00
Stephen Boyd 58f915a311 nconfig: Fix segfault when help contains special characters
nconfig segfaults when help text contains the character '%'. For a quick
example, navigate to the kernel compression options and get the help for
bzip2. Doing so triggers a call to mvwprintw() with a string containing
'%' and no extra arguments to fill in the specifier's value. Fix this
case by printing the literal string retrieved from the kconfig.

 #0  0x00002b52b6b11d83 in vfprintf () from /lib/libc.so.6
 #1  0x00002b52b6bad010 in __vsnprintf_chk () from /lib/libc.so.6
 #2  0x00002b52b623991b in _nc_printf_string () from
 /lib/libncursesw.so.5
 #3  0x00002b52b6234cff in vwprintw () from /lib/libncursesw.so.5
 #4  0x00002b52b6234db9 in mvwprintw () from /lib/libncursesw.so.5
 #5  0x00000000004151d8 in fill_window (win=0x21b64c0,
     text=0x21b62b0 "CONFIG_KERNEL_BZIP2:\n\nIts compression ratio and
     speed is intermediate.\nDecompression speed is slowest among the
     three.  The kernel\nsize is about 10% smaller with bzip2, in
     comparison to gzip.\nBzip2 us"...)
     at scripts/kconfig/nconf.gui.c:229
 #6  0x0000000000416335 in show_scroll_win (main_window=0x21a5630,
         title=0x157fa30 "Bzip2",
 	    text=0x21b62b0 "CONFIG_KERNEL_BZIP2:\n\nIts compression
 	    ratio and speed is intermediate.\nDecompression speed is
 	    slowest among the three.  The kernel\nsize is about 10%
 	    smaller with bzip2, in comparison to gzip.\nBzip2 us"...)
     at scripts/kconfig/nconf.gui.c:535
 #7  0x00000000004055b2 in show_help (menu=0x157f9d0)
         at scripts/kconfig/nconf.c:1257
 #8  0x0000000000405897 in conf_choice (menu=0x157f130)
 	    at scripts/kconfig/nconf.c:1321
 #9  0x0000000000405326 in conf (menu=0x157d130) at
 	    scripts/kconfig/nconf.c:1208
 #10 0x00000000004052e8 in conf (menu=0xb434a0) at
 	    scripts/kconfig/nconf.c:1203
 #11 0x0000000000406092 in main (ac=2, av=0x7fff96a93c38)

Cc: Michal Marek <mmarek@suse.cz>
Cc: Nir Tzachar <nir.tzachar@gmail.com>
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-07-23 11:23:42 +02:00
Michal Marek 851190c930 nconfig: mark local functions as such
scripts/kconfig/nconf.gui.c:23: warning: no previous prototype for 'set_normal_colors'
scripts/kconfig/nconf.gui.c:68: warning: no previous prototype for 'normal_color_theme'
scripts/kconfig/nconf.gui.c💯 warning: no previous prototype for 'no_colors_theme'
scripts/kconfig/nconf.c:455: warning: no previous prototype for 'process_special_keys'
scripts/kconfig/nconf.c:487: warning: no previous prototype for 'get_next_hot'
scripts/kconfig/nconf.c:506: warning: no previous prototype for 'canbhot'
scripts/kconfig/nconf.c:514: warning: no previous prototype for 'is_hot'
scripts/kconfig/nconf.c:522: warning: no previous prototype for 'make_hot'
scripts/kconfig/nconf.c:582: warning: no previous prototype for 'item_make'
scripts/kconfig/nconf.c:626: warning: no previous prototype for 'item_add_str'
scripts/kconfig/nconf.c:656: warning: no previous prototype for 'item_tag'
scripts/kconfig/nconf.c:668: warning: no previous prototype for 'curses_item_index'
scripts/kconfig/nconf.c:673: warning: no previous prototype for 'item_data'
scripts/kconfig/nconf.c:684: warning: no previous prototype for 'item_is_tag'
scripts/kconfig/nconf.c:691: warning: no previous prototype for 'set_config_filename'

Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-02-02 14:33:55 +01:00
nir.tzachar@gmail.com 692d97c380 kconfig: new configuration interface (nconfig)
This patch was inspired by the kernel projects page, where an ncurses
replacement for menuconfig was mentioned (by Sam Ravnborg).

Building on menuconfig, this patch implements a more modern look
interface using ncurses and ncurses' satellite libraries (menu, panel,
form). The implementation does not depend on lxdialog, which is
currently distributed with the kernel.

Signed-off-by: Nir Tzachar <nir.tzachar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-02-02 14:33:55 +01:00