view vimtutor.com @ 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 6f55637de261
children
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$ !
$ !=====================================================================
$ !
$ !	VimTutor.com	version 29-Aug-2002
$ !
$ !	Author: Tom Wyant <Thomas.R.Wyant-III@usa.dupont.com>
$ !
$ !	This DCL command procedure executes the vimtutor command
$ !	(surprise, surprise!) which gives you a brief tutorial on the
$ !	VIM editor. Languages other than the default are supported in
$ !	the usual way, as are at least some of the command qualifiers,
$ !	though you'll need to play some fairly serious games with DCL
$ !	to specify ones that need quoting.
$ !
$ !	Copyright (c) 2002 E. I. DuPont de Nemours and Company, Inc
$ !
$ !	This program is free software; you can redistribute it and/or
$ !	modify it under the terms of the VIM license as available from
$ !	the vim 6.1 ":help license" command or (at your option) the
$ !	license from any later version of vim.
$ !
$ !	This program is distributed in the hope that it will be useful,
$ !	but WITHOUT ANY WARRANTY; without even the implied warranty of
$ !	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ !
$ !=====================================================================
$ !
$ !
$ !	Check for the existence of VIM, and die if it isn't there.
$ !
$	if f$search ("vim:vim.exe") .eqs. ""
$	then
$	    write sys$error "Error - Can't run tutorial. VIM not found."
$	    exit
$	endif
$ !
$ !
$ !	Pick up the argument, if any.
$ !
$	inx = 0
$ arg_loop:
$	inx = inx + 1
$	if f$type (p'inx') .nes. ""
$	then
$	    if p'inx' .nes. "" .and. f$locate ("-", p'inx') .ne. 0
$	    then
$		xx = p'inx'
$		assign/nolog "''xx'" xx
$		p'inx' = ""
$	    endif
$	    goto arg_loop
$	endif
$ !
$ !
$ !	Make sure we clean up our toys when we're through playing.
$ !
$	on error then goto exit
$ !
$ !
$ !	Create the VIM foreign command if needed
$ !
$	if f$type (vim) .eqs. "" then vim := $vim:vim
$ !
$ !
$ !	Build the name for our temp file.
$ !
$	tutfil = "sys$login:vimtutor_" + -
		f$edit (f$getjpi (0, "pid"), "trim") + "."
$	assign/nolog 'tutfil' TUTORCOPY
$ !
$ !
$ !	Copy the selected file to the temp file
$ !
$	assign/nolog/user nla0: sys$error
$	assign/nolog/user nla0: sys$output
$	vim -u "NONE" -c "so $VIMRUNTIME/tutor/tutor.vim"
$ !
$ !
$ !	Run the tutorial
$ !
$	assign/nolog/user sys$command sys$input
$	vim -u "NONE" -c "set nocp" 'p1' 'p2' 'p3' 'p4' 'p5' 'p6' 'p7' 'p8' 'tutfil'
$ !
$ !
$ !	Ditch the copy.
$ !
$ exit:
$	if f$type (tutfil) .nes. "" .and. f$search (tutfil) .nes. "" then -
$	    delete 'tutfil';*
$	if f$type (xx) .nes. "" then deassign xx
$	deassign TUTORCOPY
$	exit
$ !
$ !=====================================================================
$ !
$ !		Modification history
$ !
$ !	29-Aug-2002	T. R. Wyant
$ !		Changed license to vim.
$ !		Fix error "input is not from a terminal"
$ !		Juggle documentation (copyright and contact to front,
$ !			modification history to end).
$ !	25-Jul-2002	T. R. Wyant
$ !		Initial version