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