Mercurial > vim
view src/testdir/test_shortpathname.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 | ae10b91ac6b3 |
children | cbd54806cb2c |
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line source
" Test for shortpathname ':8' extension. " Only for use on Win32 systems! set encoding=utf-8 scriptencoding utf-8 source check.vim CheckMSWindows func TestIt(file, bits, expected) let res = fnamemodify(a:file, a:bits) if a:expected != '' call assert_equal(substitute(a:expected, '/', '\\', 'g'), \ substitute(res, '/', '\\', 'g'), \ "'" . a:file . "'->(" . a:bits . ")->'" . res . "'") endif endfunc func Test_ColonEight() let save_dir = getcwd() " This could change for CygWin to //cygdrive/c . let dir1 = 'c:/x.x.y' let trycount = 5 while 1 if !filereadable(dir1) && !isdirectory(dir1) break endif if trycount == 1 call assert_report("Fatal: '" . dir1 . "' exists, cannot run this test") return endif " When tests run in parallel the directory may exist, wait a bit until it " is gone. sleep 5 let trycount -= 1 endwhile let file1 = dir1 . '/zz.y.txt' let nofile1 = dir1 . '/z.y.txt' let dir2 = dir1 . '/VimIsTheGreatestSinceSlicedBread' let file2 = dir2 . '/z.txt' let nofile2 = dir2 . '/zz.txt' call mkdir(dir1, 'D') let resdir1 = substitute(fnamemodify(dir1, ':p:8'), '/$', '', '') call assert_match('\V\^c:/XX\x\x\x\x~1.Y\$', resdir1) let resfile1 = resdir1 . '/ZZY~1.TXT' let resnofile1 = resdir1 . '/z.y.txt' let resdir2 = resdir1 . '/VIMIST~1' let resfile2 = resdir2 . '/z.txt' let resnofile2 = resdir2 . '/zz.txt' call mkdir(dir2, 'D') call writefile([], file1, 'D') call writefile([], file2, 'D') call TestIt(file1, ':p:8', resfile1) call TestIt(nofile1, ':p:8', resnofile1) call TestIt(file2, ':p:8', resfile2) call TestIt(nofile2, ':p:8', resnofile2) call TestIt(nofile2, ':p:8:h', fnamemodify(resnofile2, ':h')) call chdir(dir1) call TestIt(file1, ':.:8', strpart(resfile1, strlen(resdir1)+1)) call TestIt(nofile1, ':.:8', strpart(resnofile1, strlen(resdir1)+1)) call TestIt(file2, ':.:8', strpart(resfile2, strlen(resdir1)+1)) call TestIt(nofile2, ':.:8', strpart(resnofile2, strlen(resdir1)+1)) let $HOME=dir1 call TestIt(file1, ':~:8', '~' . strpart(resfile1, strlen(resdir1))) call TestIt(nofile1, ':~:8', '~' . strpart(resnofile1, strlen(resdir1))) call TestIt(file2, ':~:8', '~' . strpart(resfile2, strlen(resdir1))) call TestIt(nofile2, ':~:8', '~' . strpart(resnofile2, strlen(resdir1))) cd c:/ call chdir(save_dir) endfunc func Test_ColonEight_MultiByte() let dir = 'Xtest' let file = dir . '/日本語のファイル.txt' call mkdir(dir, 'D') call writefile([], file, 'D') let sfile = fnamemodify(file, ':8') call assert_notequal(file, sfile) call assert_match('\~', sfile) endfunc func Test_ColonEight_notexists() let non_exists='C:\windows\newfile.txt' call assert_equal(non_exists, fnamemodify(non_exists, ':p:8')) endfunc " vim: shiftwidth=2 sts=2 expandtab