Mercurial > vim
view src/testdir/test_windows_home.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 | 08940efa6b4e |
children |
line wrap: on
line source
" Test for $HOME on Windows. source check.vim CheckMSWindows let s:env = {} func s:restore_env() for i in keys(s:env) exe 'let ' . i . '=s:env["' . i . '"]' endfor endfunc func s:save_env(...) for i in a:000 exe 'let s:env["' . i . '"]=' . i endfor endfunc func s:unlet_env(...) for i in a:000 exe 'let ' . i . '=""' endfor endfunc func CheckHomeIsMissingFromSubprocessEnvironment() silent! let out = system('set') let env = filter(split(out, "\n"), 'v:val=~"^HOME="') call assert_equal(0, len(env)) endfunc func CheckHomeIsInSubprocessEnvironment(exp) silent! let out = system('set') let env = filter(split(out, "\n"), 'v:val=~"^HOME="') let home = len(env) == 0 ? "" : substitute(env[0], '[^=]\+=', '', '') call assert_equal(a:exp, home) endfunc func CheckHome(exp, ...) call assert_equal(a:exp, $HOME) call assert_equal(a:exp, expand('~', ':p')) if !a:0 call CheckHomeIsMissingFromSubprocessEnvironment() else call CheckHomeIsInSubprocessEnvironment(a:1) endif endfunc func Test_WindowsHome() command! -nargs=* SaveEnv call <SID>save_env(<f-args>) command! -nargs=* RestoreEnv call <SID>restore_env() command! -nargs=* UnletEnv call <SID>unlet_env(<f-args>) set noshellslash let save_home = $HOME SaveEnv $USERPROFILE $HOMEDRIVE $HOMEPATH try " Normal behavior: use $HOMEDRIVE and $HOMEPATH, ignore $USERPROFILE let $USERPROFILE = 'unused' let $HOMEDRIVE = 'C:' let $HOMEPATH = '\foobar' let $HOME = '' " Force recomputing "homedir" call CheckHome('C:\foobar') " Same, but with $HOMEPATH not set UnletEnv $HOMEPATH let $HOME = '' " Force recomputing "homedir" call CheckHome('C:\') " Use $USERPROFILE if $HOMEPATH and $HOMEDRIVE are empty UnletEnv $HOMEDRIVE $HOMEPATH let $USERPROFILE = 'C:\foo' let $HOME = '' " Force recomputing "homedir" call CheckHome('C:\foo') " If $HOME is set the others don't matter let $HOME = 'C:\bar' let $USERPROFILE = 'unused' let $HOMEDRIVE = 'unused' let $HOMEPATH = 'unused' call CheckHome('C:\bar', 'C:\bar') " If $HOME contains %USERPROFILE% it is expanded let $USERPROFILE = 'C:\foo' let $HOME = '%USERPROFILE%\bar' let $HOMEDRIVE = 'unused' let $HOMEPATH = 'unused' call CheckHome('C:\foo\bar', '%USERPROFILE%\bar') " Invalid $HOME is kept let $USERPROFILE = 'C:\foo' let $HOME = '%USERPROFILE' let $HOMEDRIVE = 'unused' let $HOMEPATH = 'unused' call CheckHome('%USERPROFILE', '%USERPROFILE') " %USERPROFILE% not at start of $HOME is not expanded let $USERPROFILE = 'unused' let $HOME = 'C:\%USERPROFILE%' let $HOMEDRIVE = 'unused' let $HOMEPATH = 'unused' call CheckHome('C:\%USERPROFILE%', 'C:\%USERPROFILE%') if has('channel') RestoreEnv let $HOME = save_home let env = '' let job = job_start('cmd /c set', {'out_cb': {ch,x->[env,execute('let env=x')]}}) sleep 1 let env = filter(split(env, "\n"), 'v:val=="HOME"') let home = len(env) == 0 ? "" : env[0] call assert_equal('', home) endif finally RestoreEnv delcommand SaveEnv delcommand RestoreEnv delcommand UnletEnv endtry endfunc " vim: shiftwidth=2 sts=2 expandtab