Mercurial > vim
view src/testdir/test_cd.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 | f7a2de8a4ddc |
children | a0f822031bfc |
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" Test for :cd and chdir() source shared.vim source check.vim func Test_cd_large_path() " This used to crash with a heap write overflow. call assert_fails('cd ' . repeat('x', 5000), 'E344:') endfunc func Test_cd_up_and_down() let path = getcwd() cd .. call assert_notequal(path, getcwd()) exe 'cd ' .. fnameescape(path) call assert_equal(path, getcwd()) endfunc func Test_cd_no_arg() if has('unix') " Test that cd without argument goes to $HOME directory on Unix systems. let path = getcwd() cd call assert_equal($HOME, getcwd()) call assert_notequal(path, getcwd()) exe 'cd ' .. fnameescape(path) call assert_equal(path, getcwd()) else " Test that cd without argument echoes cwd on non-Unix systems. call assert_match(getcwd(), execute('cd')) endif endfunc func Test_cd_minus() " Test the :cd - goes back to the previous directory. let path = getcwd() cd .. let path_dotdot = getcwd() call assert_notequal(path, path_dotdot) cd - call assert_equal(path, getcwd()) cd - call assert_equal(path_dotdot, getcwd()) cd - call assert_equal(path, getcwd()) " Test for :cd - after a failed :cd call assert_fails('cd /nonexistent', 'E344:') call assert_equal(path, getcwd()) cd - call assert_equal(path_dotdot, getcwd()) cd - " Test for :cd - without a previous directory let lines =<< trim [SCRIPT] call assert_fails('cd -', 'E186:') call assert_fails('call chdir("-")', 'E186:') call writefile(v:errors, 'Xresult') qall! [SCRIPT] call writefile(lines, 'Xscript', 'D') if RunVim([], [], '--clean -S Xscript') call assert_equal([], readfile('Xresult')) endif call delete('Xresult') endfunc " Test for chdir() func Test_chdir_func() let topdir = getcwd() call mkdir('Xchdir/y/z', 'pR') " Create a few tabpages and windows with different directories new cd Xchdir tabnew tcd y below new below new lcd z tabfirst call assert_match('^\[global\] .*/Xchdir$', trim(execute('verbose pwd'))) call chdir('..') call assert_equal('y', fnamemodify(getcwd(1, 2), ':t')) call assert_equal('z', fnamemodify(3->getcwd(2), ':t')) tabnext | wincmd t call assert_match('^\[tabpage\] .*/y$', trim(execute('verbose pwd'))) eval '..'->chdir() call assert_equal('Xchdir', fnamemodify(getcwd(1, 2), ':t')) call assert_equal('Xchdir', fnamemodify(getcwd(2, 2), ':t')) call assert_equal('z', fnamemodify(getcwd(3, 2), ':t')) call assert_equal('testdir', fnamemodify(getcwd(1, 1), ':t')) 3wincmd w call assert_match('^\[window\] .*/z$', trim(execute('verbose pwd'))) call chdir('..') call assert_equal('Xchdir', fnamemodify(getcwd(1, 2), ':t')) call assert_equal('Xchdir', fnamemodify(getcwd(2, 2), ':t')) call assert_equal('y', fnamemodify(getcwd(3, 2), ':t')) call assert_equal('testdir', fnamemodify(getcwd(1, 1), ':t')) " Error case call assert_fails("call chdir('dir-abcd')", 'E344:') silent! let d = chdir("dir_abcd") call assert_equal("", d) " Should not crash call chdir(d) call assert_equal('', chdir([])) only | tabonly call chdir(topdir) endfunc " Test for changing to the previous directory '-' func Test_prev_dir() let topdir = getcwd() call mkdir('Xprevdir/a/b/c', 'pR') " Create a few tabpages and windows with different directories new | only tabnew | new tabnew tabfirst cd Xprevdir tabnext | wincmd t tcd a wincmd w lcd b tabnext tcd a/b/c " Change to the previous directory twice in all the windows. tabfirst cd - | cd - tabnext | wincmd t tcd - | tcd - wincmd w lcd - | lcd - tabnext tcd - | tcd - " Check the directory of all the windows tabfirst call assert_equal('Xprevdir', fnamemodify(getcwd(), ':t')) tabnext | wincmd t call assert_equal('a', fnamemodify(getcwd(), ':t')) wincmd w call assert_equal('b', fnamemodify(getcwd(), ':t')) tabnext call assert_equal('c', fnamemodify(getcwd(), ':t')) " Change to the previous directory using chdir() tabfirst call chdir("-") | call chdir("-") tabnext | wincmd t call chdir("-") | call chdir("-") wincmd w call chdir("-") | call chdir("-") tabnext call chdir("-") | call chdir("-") " Check the directory of all the windows tabfirst call assert_equal('Xprevdir', fnamemodify(getcwd(), ':t')) tabnext | wincmd t call assert_equal('a', fnamemodify(getcwd(), ':t')) wincmd w call assert_equal('b', fnamemodify(getcwd(), ':t')) tabnext call assert_equal('c', fnamemodify(getcwd(), ':t')) only | tabonly call chdir(topdir) endfunc func Test_lcd_split() let curdir = getcwd() lcd .. split lcd - call assert_equal(curdir, getcwd()) quit! endfunc func Test_cd_from_non_existing_dir() CheckNotMSWindows let saveddir = getcwd() call mkdir('Xdeleted_dir') cd Xdeleted_dir call delete(saveddir .. '/Xdeleted_dir', 'd') " Expect E187 as the current directory was deleted. call assert_fails('pwd', 'E187:') call assert_equal('', getcwd()) cd - call assert_equal(saveddir, getcwd()) endfunc func Test_cd_completion() call mkdir('XComplDir1', 'D') call mkdir('XComplDir2', 'D') call writefile([], 'XComplFile', 'D') for cmd in ['cd', 'chdir', 'lcd', 'lchdir', 'tcd', 'tchdir'] call feedkeys(':' .. cmd .. " XCompl\<C-A>\<C-B>\"\<CR>", 'tx') call assert_equal('"' .. cmd .. ' XComplDir1/ XComplDir2/', @:) endfor endfunc func Test_cd_unknown_dir() call mkdir('Xa', 'R') cd Xa call writefile(['text'], 'Xb.txt') edit Xa/Xb.txt let first_buf = bufnr() cd .. edit call assert_equal(first_buf, bufnr()) edit Xa/Xb.txt call assert_notequal(first_buf, bufnr()) bwipe! exe "bwipe! " .. first_buf endfunc func Test_getcwd_actual_dir() CheckOption autochdir let startdir = getcwd() call mkdir('Xactual', 'R') call test_autochdir() set autochdir edit Xactual/file.txt call assert_match('testdir.Xactual$', getcwd()) lcd .. call assert_match('testdir$', getcwd()) edit call assert_match('testdir.Xactual$', getcwd()) call assert_match('testdir$', getcwd(win_getid())) set noautochdir bwipe! call chdir(startdir) endfunc " vim: shiftwidth=2 sts=2 expandtab