diff options
Diffstat (limited to 'plugin')
-rw-r--r-- | plugin/redact_pass.vim | 67 |
1 files changed, 38 insertions, 29 deletions
diff --git a/plugin/redact_pass.vim b/plugin/redact_pass.vim index 75776d6..66916a7 100644 --- a/plugin/redact_pass.vim +++ b/plugin/redact_pass.vim @@ -1,15 +1,10 @@ " -" redact_pass.vim: Switch off the 'viminfo', 'backup', 'swapfile', and -" 'undofile' when editing passwords in the pass(1) password manager, or a -" comparable tool if g:redact_pass_pattern is set beforehand. +" redact_pass.vim: Switch off the 'viminfo', 'backup', 'writebackup', +" 'swapfile', and 'undofile' globally when editing a password in pass(1). " " This is to prevent anyone being able to extract passwords from your Vim " cache files in the event of a compromise. " -" Test this carefully to make sure it works! If it doesn't, it is probably -" because you need to set g:redact_pass_pattern to fit your system's -" behaviour, or the plugin hasn't loaded at all. -" " Author: Tom Ryder <tom@sanctum.geek.nz> " License: Same as Vim itself " @@ -21,37 +16,51 @@ if !has('autocmd') endif let g:loaded_redact_pass = 1 -" Set g:redact_pass_pattern to a default based on the pass(1) code, if it -" hasn't already been set -if !exists('g:redact_pass_pattern') - let g:redact_pass_pattern - \ = '/dev/shm/pass.*/*,$TMPDIR/pass.*/*,/tmp/pass.*/*' -endif +" Pattern to match for the portion of the path after the temporary dir, +" starting with the leading slash +let s:pattern = '\m\C/pass\.[^/]\+/[^/]\+\.txt$' -" Function to switch the options off for just the current buffer -function! s:RedactPass() +" Check whether the given dir name is not an empty string, whether the first +" file in the argument list is within the named dir, and that the whole path +" matches the above pattern immediately after that dir name +function! s:PassPath(root) + return strlen(a:root) + \ && stridx(argv(0), a:root) == 0 + \ && strlen(a:root) == match(argv(0), s:pattern) +endfunction - " Unset options - setlocal nobackup - setlocal nowritebackup - setlocal noswapfile - if has('viminfo') - setlocal viminfo= +" Check whether we should set redacting options or not +function! s:CheckArgsRedact() + + " Short-circuit unless we're editing just one file and it looks like a path + " in one of the three expected directories; we're trying hard to make sure + " this really is a password file and we're not messing with the user's + " precious settings unnecessarily + if argc() != 1 + \ || !s:PassPath('/dev/shm') + \ && !s:PassPath($TMPDIR) + \ && !s:PassPath('/tmp') + return endif + + " Disable all the leaky options globally + set nobackup + set nowritebackup + set noswapfile + set viminfo= if has('persistent_undo') - setlocal noundofile + set noundofile endif - " Set a buffer variable to say we were here, for debugging - let b:redact_pass_active = 1 + " Tell the user what we're doing so they know this worked, via a message and + " a global variable they can check + echomsg 'Editing password file--disabled leaky options!' + let g:redact_pass_redacted = 1 endfunction -" Automatic command to use the function based on filename pattern -let s:command = 'autocmd BufNewFile,BufReadPre ' - \ . g:redact_pass_pattern - \ . ' call s:RedactPass()' +" Auto function loads only when Vim starts up augroup redact_pass autocmd! - execute s:command + autocmd VimEnter * call s:CheckArgsRedact() augroup END |