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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 dd203ec9a0e1
children 22c03485f222
line wrap: on
line source

" Test for variable tabstops

source check.vim
CheckFeature vartabs

source view_util.vim

func s:compare_lines(expect, actual)
  call assert_equal(join(a:expect, "\n"), join(a:actual, "\n"))
endfunc

func Test_vartabs()
  new
  %d

  " Test normal operation of tabstops ...
  set ts=4
  call setline(1, join(split('aaaaa', '\zs'), "\t"))
  retab 8
  let expect = "a   a\<tab>a   a\<tab>a"
  call assert_equal(expect, getline(1))

  " ... and softtabstops
  set ts=8 sts=6
  exe "norm! Sb\<tab>b\<tab>b\<tab>b\<tab>b"
  let expect = "b     b\<tab>    b\<tab>  b\<tab>b"
  call assert_equal(expect, getline(1))

  " Test variable tabstops.
  set sts=0 vts=4,8,4,8
  exe "norm! Sc\<tab>c\<tab>c\<tab>c\<tab>c\<tab>c"
  retab 8
  let expect = "c   c\<tab>    c\<tab>c\<tab>c\<tab>c"
  call assert_equal(expect, getline(1))

  set et vts=4,8,4,8
  exe "norm! Sd\<tab>d\<tab>d\<tab>d\<tab>d\<tab>d"
  let expect = "d   d       d   d       d       d"
  call assert_equal(expect, getline(1))

  " Changing ts should have no effect if vts is in use.
  call cursor(1, 1)
  set ts=6
  exe "norm! Se\<tab>e\<tab>e\<tab>e\<tab>e\<tab>e"
  let expect = "e   e       e   e       e       e"
  call assert_equal(expect, getline(1))

  " Clearing vts should revert to using ts.
  set vts=
  exe "norm! Sf\<tab>f\<tab>f\<tab>f\<tab>f\<tab>f"
  let expect = "f     f     f     f     f     f"
  call assert_equal(expect, getline(1))

  " Test variable softtabstops.
  set noet ts=8 vsts=12,2,6
  exe "norm! Sg\<tab>g\<tab>g\<tab>g\<tab>g\<tab>g"
  let expect = "g\<tab>    g g\<tab>    g\<tab>  g\<tab>g"
  call assert_equal(expect, getline(1))

  " Variable tabstops and softtabstops combined.
  set vsts=6,12,8 vts=4,6,8
  exe "norm! Sh\<tab>h\<tab>h\<tab>h\<tab>h"
  let expect = "h\<tab>  h\<tab>\<tab>h\<tab>h\<tab>h"
  call assert_equal(expect, getline(1))

  " Retab with a single value, not using vts.
  set ts=8 sts=0 vts= vsts=
  exe "norm! Si\<tab>i\<tab>i\<tab>i\<tab>i"
  retab 4
  let expect = "i\<tab>\<tab>i\<tab>\<tab>i\<tab>\<tab>i\<tab>\<tab>i"
  call assert_equal(expect, getline(1))

  " Retab with a single value, using vts.
  set ts=8 sts=0 vts=6 vsts=
  exe "norm! Sj\<tab>j\<tab>j\<tab>j\<tab>j"
  retab 4
  let expect = "j\<tab>  j\<tab>\<tab>j\<tab>  j\<tab>\<tab>j"
  call assert_equal(expect, getline(1))

  " Retab with multiple values, not using vts.
  set ts=6 sts=0 vts= vsts=
  exe "norm! Sk\<tab>k\<tab>k\<tab>k\<tab>k\<tab>k"
  retab 4,8
  let expect = "k\<tab>  k\<tab>k     k\<tab>    k\<tab>  k"
  call assert_equal(expect, getline(1))

  " Retab with multiple values, using vts.
  set ts=8 sts=0 vts=6 vsts=
  exe "norm! Sl\<tab>l\<tab>l\<tab>l\<tab>l\<tab>l"
  retab 4,8
  let expect = "l\<tab>  l\<tab>l     l\<tab>    l\<tab>  l"
  call assert_equal(expect, getline(1))

  " Test for 'retab' with vts
  set ts=8 sts=0 vts=5,3,6,2 vsts=
  exe "norm! S                l"
  .retab!
  call assert_equal("\t\t\t\tl", getline(1))

  " Test for 'retab' with same values as vts
  set ts=8 sts=0 vts=5,3,6,2 vsts=
  exe "norm! S                l"
  .retab! 5,3,6,2
  call assert_equal("\t\t\t\tl", getline(1))

  " Check that global and local values are set.
  set ts=4 vts=6 sts=8 vsts=10
  call assert_equal(&ts, 4)
  call assert_equal(&vts, '6')
  call assert_equal(&sts, 8)
  call assert_equal(&vsts, '10')
  new
  call assert_equal(&ts, 4)
  call assert_equal(&vts, '6')
  call assert_equal(&sts, 8)
  call assert_equal(&vsts, '10')
  bwipeout!

  " Check that local values only are set.
  setlocal ts=5 vts=7 sts=9 vsts=11
  call assert_equal(&ts, 5)
  call assert_equal(&vts, '7')
  call assert_equal(&sts, 9)
  call assert_equal(&vsts, '11')
  new
  call assert_equal(&ts, 4)
  call assert_equal(&vts, '6')
  call assert_equal(&sts, 8)
  call assert_equal(&vsts, '10')
  bwipeout!

  " Check that global values only are set.
  setglobal ts=6 vts=8 sts=10 vsts=12
  call assert_equal(&ts, 5)
  call assert_equal(&vts, '7')
  call assert_equal(&sts, 9)
  call assert_equal(&vsts, '11')
  new
  call assert_equal(&ts, 6)
  call assert_equal(&vts, '8')
  call assert_equal(&sts, 10)
  call assert_equal(&vsts, '12')
  bwipeout!

  set ts& vts& sts& vsts& et&
  bwipeout!
endfunc

func Test_retab_invalid_arg()
  new
  call setline(1, "\ttext")
  retab 0
  call assert_fails("retab -8", 'E487: Argument must be positive')
  call assert_fails("retab 10000", 'E475:')
  call assert_fails("retab 720575940379279360", 'E475:')
  bwipe!
endfunc

func Test_vartabs_breakindent()
  CheckOption breakindent
  new
  %d

  " Test normal operation of tabstops ...
  set ts=4
  call setline(1, join(split('aaaaa', '\zs'), "\t"))
  retab 8
  let expect = "a   a\<tab>a   a\<tab>a"
  call assert_equal(expect, getline(1))

  " ... and softtabstops
  set ts=8 sts=6
  exe "norm! Sb\<tab>b\<tab>b\<tab>b\<tab>b"
  let expect = "b     b\<tab>    b\<tab>  b\<tab>b"
  call assert_equal(expect, getline(1))

  " Test variable tabstops.
  set sts=0 vts=4,8,4,8
  exe "norm! Sc\<tab>c\<tab>c\<tab>c\<tab>c\<tab>c"
  retab 8
  let expect = "c   c\<tab>    c\<tab>c\<tab>c\<tab>c"
  call assert_equal(expect, getline(1))

  set et vts=4,8,4,8
  exe "norm! Sd\<tab>d\<tab>d\<tab>d\<tab>d\<tab>d"
  let expect = "d   d       d   d       d       d"
  call assert_equal(expect, getline(1))

  " Changing ts should have no effect if vts is in use.
  call cursor(1, 1)
  set ts=6
  exe "norm! Se\<tab>e\<tab>e\<tab>e\<tab>e\<tab>e"
  let expect = "e   e       e   e       e       e"
  call assert_equal(expect, getline(1))

  " Clearing vts should revert to using ts.
  set vts=
  exe "norm! Sf\<tab>f\<tab>f\<tab>f\<tab>f\<tab>f"
  let expect = "f     f     f     f     f     f"
  call assert_equal(expect, getline(1))

  " Test variable softtabstops.
  set noet ts=8 vsts=12,2,6
  exe "norm! Sg\<tab>g\<tab>g\<tab>g\<tab>g\<tab>g"
  let expect = "g\<tab>    g g\<tab>    g\<tab>  g\<tab>g"
  call assert_equal(expect, getline(1))

  " Variable tabstops and softtabstops combined.
  set vsts=6,12,8 vts=4,6,8
  exe "norm! Sh\<tab>h\<tab>h\<tab>h\<tab>h"
  let expect = "h\<tab>  h\<tab>\<tab>h\<tab>h\<tab>h"
  call assert_equal(expect, getline(1))

  " Retab with a single value, not using vts.
  set ts=8 sts=0 vts= vsts=
  exe "norm! Si\<tab>i\<tab>i\<tab>i\<tab>i"
  retab 4
  let expect = "i\<tab>\<tab>i\<tab>\<tab>i\<tab>\<tab>i\<tab>\<tab>i"
  call assert_equal(expect, getline(1))

  " Retab with a single value, using vts.
  set ts=8 sts=0 vts=6 vsts=
  exe "norm! Sj\<tab>j\<tab>j\<tab>j\<tab>j"
  retab 4
  let expect = "j\<tab>  j\<tab>\<tab>j\<tab>  j\<tab>\<tab>j"
  call assert_equal(expect, getline(1))

  " Retab with multiple values, not using vts.
  set ts=6 sts=0 vts= vsts=
  exe "norm! Sk\<tab>k\<tab>k\<tab>k\<tab>k\<tab>k"
  retab 4,8
  let expect = "k\<tab>  k\<tab>k     k\<tab>    k\<tab>  k"
  call assert_equal(expect, getline(1))

  " Retab with multiple values, using vts.
  set ts=8 sts=0 vts=6 vsts=
  exe "norm! Sl\<tab>l\<tab>l\<tab>l\<tab>l\<tab>l"
  retab 4,8
  let expect = "l\<tab>  l\<tab>l     l\<tab>    l\<tab>  l"
  call assert_equal(expect, getline(1))

  " Check that global and local values are set.
  set ts=4 vts=6 sts=8 vsts=10
  call assert_equal(&ts, 4)
  call assert_equal(&vts, '6')
  call assert_equal(&sts, 8)
  call assert_equal(&vsts, '10')
  new
  call assert_equal(&ts, 4)
  call assert_equal(&vts, '6')
  call assert_equal(&sts, 8)
  call assert_equal(&vsts, '10')
  bwipeout!

  " Check that local values only are set.
  setlocal ts=5 vts=7 sts=9 vsts=11
  call assert_equal(&ts, 5)
  call assert_equal(&vts, '7')
  call assert_equal(&sts, 9)
  call assert_equal(&vsts, '11')
  new
  call assert_equal(&ts, 4)
  call assert_equal(&vts, '6')
  call assert_equal(&sts, 8)
  call assert_equal(&vsts, '10')
  bwipeout!

  " Check that global values only are set.
  setglobal ts=6 vts=8 sts=10 vsts=12
  call assert_equal(&ts, 5)
  call assert_equal(&vts, '7')
  call assert_equal(&sts, 9)
  call assert_equal(&vsts, '11')
  new
  call assert_equal(&ts, 6)
  call assert_equal(&vts, '8')
  call assert_equal(&sts, 10)
  call assert_equal(&vsts, '12')
  bwipeout!

  bwipeout!
endfunc

func Test_vartabs_linebreak()
  if winwidth(0) < 40
    return
  endif
  new
  40vnew
  %d
  setl linebreak vartabstop=10,20,30,40
  call setline(1, "\tx\tx\tx\tx")

  let expect = ['          x                             ',
        \       'x                   x                   ',
        \       'x                                       ']
  let lines = ScreenLines([1, 3], winwidth(0))
  call s:compare_lines(expect, lines)
  setl list listchars=tab:>-
  let expect = ['>---------x>------------------          ',
        \       'x>------------------x>------------------',
        \       'x                                       ']
  let lines = ScreenLines([1, 3], winwidth(0))
  call s:compare_lines(expect, lines)
  setl linebreak vartabstop=40
  let expect = ['>---------------------------------------',
        \       'x>--------------------------------------',
        \       'x>--------------------------------------',
        \       'x>--------------------------------------',
        \       'x                                       ']
  let lines = ScreenLines([1, 5], winwidth(0))
  call s:compare_lines(expect, lines)

  " cleanup
  bw!
  bw!
  set nolist listchars&vim
endfunc

func Test_vartabs_shiftwidth()
  "return
  if winwidth(0) < 40
    return
  endif
  new
  40vnew
  %d
"  setl varsofttabstop=10,20,30,40
  setl shiftwidth=0 vartabstop=10,20,30,40
  call setline(1, "x")

  " Check without any change.
  let expect = ['x                                       ']
  let lines = ScreenLines(1, winwidth(0))
  call s:compare_lines(expect, lines)
  " Test 1:
  " shiftwidth depends on the indent, first check with cursor at the end of the
  " line (which is the same as the start of the line, since there is only one
  " character).
  norm! $>>
  let expect1 = ['          x                             ']
  let lines = ScreenLines(1, winwidth(0))
  call s:compare_lines(expect1, lines)
  call assert_equal(10, shiftwidth())
  call assert_equal(10, shiftwidth(1))
  call assert_equal(20, shiftwidth(virtcol('.')))
  norm! $>>
  let expect2 = ['                              x         ', '~                                       ']
  let lines = ScreenLines([1, 2], winwidth(0))
  call s:compare_lines(expect2, lines)
  call assert_equal(20, shiftwidth(virtcol('.')-2))
  call assert_equal(30, virtcol('.')->shiftwidth())
  norm! $>>
  let expect3 = ['                                        ', '                    x                   ', '~                                       ']
  let lines = ScreenLines([1, 3], winwidth(0))
  call s:compare_lines(expect3, lines)
  call assert_equal(30, shiftwidth(virtcol('.')-2))
  call assert_equal(40, shiftwidth(virtcol('.')))
  norm! $>>
  let expect4 = ['                                        ', '                                        ', '                    x                   ']
  let lines = ScreenLines([1, 3], winwidth(0))
  call assert_equal(40, shiftwidth(virtcol('.')))
  call s:compare_lines(expect4, lines)

  " Test 2: Put the cursor at the first column, result should be the same
  call setline(1, "x")
  norm! 0>>
  let lines = ScreenLines(1, winwidth(0))
  call s:compare_lines(expect1, lines)
  norm! 0>>
  let lines = ScreenLines([1, 2], winwidth(0))
  call s:compare_lines(expect2, lines)
  norm! 0>>
  let lines = ScreenLines([1, 3], winwidth(0))
  call s:compare_lines(expect3, lines)
  norm! 0>>
  let lines = ScreenLines([1, 3], winwidth(0))
  call s:compare_lines(expect4, lines)

  call assert_fails('call shiftwidth([])', 'E745:')

  " cleanup
  bw!
  bw!
endfunc

func Test_vartabs_failures()
  call assert_fails('set vts=8,')
  call assert_fails('set vsts=8,')
  call assert_fails('set vts=8,,8')
  call assert_fails('set vsts=8,,8')
  call assert_fails('set vts=8,,8,')
  call assert_fails('set vsts=8,,8,')
  call assert_fails('set vts=,8')
  call assert_fails('set vsts=,8')
endfunc

func Test_vartabs_reset()
  set vts=8
  set all&
  call assert_equal('', &vts)
endfunc

func s:SaveCol(l)
  call add(a:l, [col('.'), virtcol('.')])
  return ''
endfunc

" Test for 'varsofttabstop'
func Test_varsofttabstop()
  new
  inoremap <expr> <F2>  s:SaveCol(g:cols)

  set backspace=indent,eol,start
  set varsofttabstop=6,2,5,3
  let g:cols = []
  call feedkeys("a\t\<F2>\t\<F2>\t\<F2>\t\<F2> ", 'xt')
  call assert_equal("\t\t ", getline(1))
  call assert_equal([[7, 7], [2, 9], [7, 14], [3, 17]], g:cols)

  let g:cols = []
  call feedkeys("a\<bs>\<F2>\<bs>\<F2>\<bs>\<F2>\<bs>\<F2>\<bs>\<F2>", 'xt')
  call assert_equal('', getline(1))
  call assert_equal([[3, 17], [7, 14], [2, 9], [7, 7], [1, 1]], g:cols)

  set varsofttabstop&
  set backspace&
  iunmap <F2>
  close!
endfunc

" Setting 'shiftwidth' to a negative value, should set it to either the value
" of 'tabstop' (if 'vartabstop' is not set) or to the first value in
" 'vartabstop'
func Test_shiftwidth_vartabstop()
  setlocal tabstop=7 vartabstop=
  call assert_fails('set shiftwidth=-1', 'E487:')
  call assert_equal(7, &shiftwidth)
  setlocal tabstop=7 vartabstop=5,7,10
  call assert_fails('set shiftwidth=-1', 'E487:')
  call assert_equal(5, &shiftwidth)
  setlocal shiftwidth& vartabstop& tabstop&
endfunc

func Test_vartabstop_latin1()
  let save_encoding = &encoding
  new
  set encoding=iso8859-1
  set compatible linebreak list revins smarttab
  set vartabstop=400
  exe "norm i00\t\<C-D>"
  bwipe!
  let &encoding = save_encoding
  set nocompatible linebreak& list& revins& smarttab& vartabstop&
endfunc


" vim: shiftwidth=2 sts=2 expandtab