Mercurial > vim
view runtime/indent/hamster.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 | 3b34837f4538 |
children |
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" Vim indent file " Language: Hamster Script " Version: 2.0.6.1 " Last Change: 2021 Oct 11 " Maintainer: David Fishburn <dfishburn dot vim at gmail dot com> " Download: https://www.vim.org/scripts/script.php?script_id=1099 " " 2.0.6.1 (Oct 2021) " Added b:undo_indent " Added cpo check " " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal indentkeys+==~if,=~else,=~endif,=~endfor,=~endwhile setlocal indentkeys+==~do,=~until,=~while,=~repeat,=~for,=~loop setlocal indentkeys+==~sub,=~endsub let b:undo_indent = "setl indentkeys<" " Define the appropriate indent function but only once setlocal indentexpr=HamGetFreeIndent() if exists("*HamGetFreeIndent") finish endif let s:keepcpo = &cpo set cpo&vim function HamGetIndent(lnum) let ind = indent(a:lnum) let prevline=getline(a:lnum) " Add a shiftwidth to statements following if, else, elseif, " case, select, default, do, until, while, for, start if prevline =~? '^\s*\<\(if\|else\%(if\)\?\|for\|repeat\|do\|while\|sub\)\>' let ind = ind + shiftwidth() endif " Subtract a shiftwidth from else, elseif, end(if|while|for), until let line = getline(v:lnum) if line =~? '^\s*\(else\|elseif\|loop\|until\|end\%(if\|while\|for\|sub\)\)\>' let ind = ind - shiftwidth() endif return ind endfunction function HamGetFreeIndent() " Find the previous non-blank line let lnum = prevnonblank(v:lnum - 1) " Use zero indent at the top of the file if lnum == 0 return 0 endif let ind=HamGetIndent(lnum) return ind endfunction " Restore: let &cpo = s:keepcpo unlet s:keepcpo " vim:sw=2 tw=80