Mercurial > vim
view src/testdir/view_util.vim @ 33776:9503dc55b5ed v9.0.2108
patch 9.0.2108: [security]: overflow with count for :s command
Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 14 20:45:48 2023 +0100
patch 9.0.2108: [security]: overflow with count for :s command
Problem: [security]: overflow with count for :s command
Solution: Abort the :s command if the count is too large
If the count after the :s command is larger than what fits into a
(signed) long variable, abort with e_value_too_large.
Adds a test with INT_MAX as count and verify it correctly fails.
It seems the return value on Windows using mingw compiler wraps around,
so the initial test using :s/./b/9999999999999999999999999990 doesn't
fail there, since the count is wrapping around several times and finally
is no longer larger than 2147483647. So let's just use 2147483647 in the
test, which hopefully will always cause a failure
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 16 Nov 2023 22:15:10 +0100 |
parents | 9fc3b3928ad5 |
children | a20bd67056d7 |
line wrap: on
line source
" Functions about view shared by several tests " Only load this script once. if exists('*Screenline') finish endif " Get line "lnum" as displayed on the screen. " Trailing white space is trimmed. func Screenline(lnum) let chars = [] for c in range(1, winwidth(0)) call add(chars, nr2char(screenchar(a:lnum, c))) endfor let line = join(chars, '') return matchstr(line, '^.\{-}\ze\s*$') endfunc " Get text on the screen, including composing characters. " ScreenLines(lnum, width) or " ScreenLines([start, end], width) func ScreenLines(lnum, width) abort redraw! if type(a:lnum) == v:t_list let start = a:lnum[0] let end = a:lnum[1] else let start = a:lnum let end = a:lnum endif let lines = [] for l in range(start, end) let lines += [join(map(range(1, a:width), 'screenstring(l, v:val)'), '')] endfor return lines endfunc func ScreenAttrs(lnum, width) abort redraw! if type(a:lnum) == v:t_list let start = a:lnum[0] let end = a:lnum[1] else let start = a:lnum let end = a:lnum endif let attrs = [] for l in range(start, end) let attrs += [map(range(1, a:width), 'screenattr(l, v:val)')] endfor return attrs endfunc " Create a new window with the requested size and fix it. func NewWindow(height, width) abort exe a:height . 'new' exe a:width . 'vsp' set winfixwidth winfixheight redraw! endfunc func CloseWindow() abort bw! redraw! endfunc " When using RunVimInTerminal() we expect modifyOtherKeys level 2 to be enabled " automatically. The key + modifier Escape codes must then use the " modifyOtherKeys encoding. They are recognized anyway, thus it's safer to use " than the raw code. " Return the modifyOtherKeys level 2 encoding for "key" with "modifier" " (number value, e.g. CTRL is 5). func GetEscCodeCSI27(key, modifier) let key = printf("%d", char2nr(a:key)) let mod = printf("%d", a:modifier) return "\<Esc>[27;" .. mod .. ';' .. key .. '~' endfunc " Return the modifyOtherKeys level 2 encoding for "key" with "modifier" " (character value, e.g. CTRL is "C"). func GetEscCodeWithModifier(modifier, key) let modifier = get({'C': 5}, a:modifier, '') if modifier == '' echoerr 'Unknown modifier: ' .. a:modifier endif return GetEscCodeCSI27(a:key, modifier) endfunc " Return the kitty keyboard protocol encoding for "key" with "modifier" " (number value, e.g. CTRL is 5). func GetEscCodeCSIu(key, modifier) let key = printf("%d", char2nr(a:key)) let mod = printf("%d", a:modifier) return "\<Esc>[" .. key .. ';' .. mod .. 'u' endfunc " Return the kitty keyboard protocol encoding for a function key: " CSI {key} " CSS 1;{modifier} {key} func GetEscCodeFunckey(key, modifier) if a:modifier == 0 return "\<Esc>[" .. a:key endif let mod = printf("%d", a:modifier) return "\<Esc>[1;".. mod .. a:key endfunc " Return the kitty keyboard protocol encoding for "key" without a modifier. " Used for the Escape key. func GetEscCodeCSIuWithoutModifier(key) let key = printf("%d", char2nr(a:key)) return "\<Esc>[" .. key .. 'u' endfunc