mirror of
https://github.com/neovim/neovim.git
synced 2025-11-04 01:34:25 +00:00
77c6cae25b
Problem: [security]: path traversal issue in tar.vim
(@ax)
Solution: warn the user for such things, drop leading /, don't
forcefully overwrite files when writing temporary files,
refactor autoload/tar.vim
tar.vim: drop leading / in path names
A tar archive containing files with leading `/` may cause confusions as
to where the content is extracted. Let's make sure we drop the leading
`/` and use a relative path instead.
Also while at it, had to refactor it quite a bit and increase the
minimum supported Vim version to v9. Also add a test for some basic tar
functionality
closes: vim/vim#17733
87757c6b0a
Co-authored-by: Christian Brabandt <cb@256bit.org>
780 lines
26 KiB
VimL
780 lines
26 KiB
VimL
" tar.vim: Handles browsing tarfiles - AUTOLOAD PORTION
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" Date: Mar 01, 2025
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" Version: 32b (with modifications from the Vim Project)
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" Maintainer: This runtime file is looking for a new maintainer.
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" Former Maintainer: Charles E Campbell
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" License: Vim License (see vim's :help license)
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" Last Change:
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" 2024 Jan 08 by Vim Project: fix a few problems (#138331, #12637, #8109)
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" 2024 Feb 19 by Vim Project: announce adoption
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" 2024 Nov 11 by Vim Project: support permissions (#7379)
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" 2025 Feb 06 by Vim Project: add support for lz4 (#16591)
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" 2025 Feb 28 by Vim Project: add support for bzip3 (#16755)
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" 2025 Mar 01 by Vim Project: fix syntax error in tar#Read()
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" 2025 Mar 02 by Vim Project: escape the filename before using :read
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" 2025 Mar 02 by Vim Project: determine the compression using readblob()
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" instead of shelling out to file(1)
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" 2025 Apr 16 by Vim Project: decouple from netrw by adding s:WinPath()
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" 2025 May 19 by Vim Project: restore working directory after read/write
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" 2025 Jul 13 by Vim Project: warn with path traversal attacks
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"
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" Contains many ideas from Michael Toren's <tar.vim>
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"
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" Copyright: Copyright (C) 2005-2017 Charles E. Campbell {{{1
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" Permission is hereby granted to use and distribute this code,
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" with or without modifications, provided that this copyright
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" notice is copied with it. Like anything else that's free,
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" tar.vim and tarPlugin.vim are provided *as is* and comes
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" with no warranty of any kind, either expressed or implied.
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" By using this plugin, you agree that in no event will the
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" copyright holder be liable for any damages resulting from
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" the use of this software.
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" ---------------------------------------------------------------------
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" Load Once: {{{1
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if &cp || exists("g:loaded_tar")
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finish
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endif
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let g:loaded_tar= "v32b"
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if !has('nvim-0.12') && v:version < 900
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echohl WarningMsg
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echo "***warning*** this version of tar needs vim 9.0"
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echohl Normal
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finish
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endif
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let s:keepcpo= &cpo
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set cpo&vim
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" ---------------------------------------------------------------------
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" Default Settings: {{{1
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if !exists("g:tar_browseoptions")
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let g:tar_browseoptions= "tf"
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endif
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if !exists("g:tar_readoptions")
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let g:tar_readoptions= "pxf"
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endif
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if !exists("g:tar_cmd")
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let g:tar_cmd= "tar"
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endif
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if !exists("g:tar_writeoptions")
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let g:tar_writeoptions= "uf"
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endif
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if !exists("g:tar_delfile")
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" Note: not supported on BSD
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let g:tar_delfile="--delete -f"
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endif
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if !exists("g:netrw_cygwin")
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if has("win32") || has("win95") || has("win64") || has("win16")
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if &shell =~ '\%(\<bash\>\|\<zsh\>\)\%(\.exe\)\=$'
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let g:netrw_cygwin= 1
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else
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let g:netrw_cygwin= 0
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endif
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else
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let g:netrw_cygwin= 0
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endif
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endif
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if !exists("g:tar_copycmd")
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if !exists("g:netrw_localcopycmd")
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if has("win32") || has("win95") || has("win64") || has("win16")
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if g:netrw_cygwin
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let g:netrw_localcopycmd= "cp"
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else
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let g:netrw_localcopycmd= "copy"
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endif
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elseif has("unix") || has("macunix")
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let g:netrw_localcopycmd= "cp"
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else
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let g:netrw_localcopycmd= ""
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endif
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endif
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let g:tar_copycmd= g:netrw_localcopycmd
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endif
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if !exists("g:tar_extractcmd")
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let g:tar_extractcmd= "tar -pxf"
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endif
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" set up shell quoting character
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if !exists("g:tar_shq")
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if exists("+shq") && exists("&shq") && &shq != ""
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let g:tar_shq= &shq
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elseif has("win32") || has("win95") || has("win64") || has("win16")
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if exists("g:netrw_cygwin") && g:netrw_cygwin
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let g:tar_shq= "'"
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else
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let g:tar_shq= '"'
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endif
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else
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let g:tar_shq= "'"
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endif
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endif
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let g:tar_secure=' -- '
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let g:tar_leading_pat='^\%([.]\{,2\}/\)\+'
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" ----------------
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" Functions: {{{1
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" ----------------
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" ---------------------------------------------------------------------
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" s:Msg: {{{2
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fun! s:Msg(func, severity, msg)
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redraw!
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if a:severity =~? 'error'
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echohl Error
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else
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echohl WarningMsg
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endif
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echo $"***{a:severity}*** ({a:func}) {a:msg}"
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echohl None
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endfunc
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" ---------------------------------------------------------------------
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" tar#Browse: {{{2
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fun! tar#Browse(tarfile)
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let repkeep= &report
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set report=10
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" sanity checks
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if !executable(g:tar_cmd)
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call s:Msg('tar#Browse', 'error', $"{g:tar_cmd} not available on your system")
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let &report= repkeep
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return
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endif
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if !filereadable(a:tarfile)
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if a:tarfile !~# '^\a\+://'
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" if it's an url, don't complain, let url-handlers such as vim do its thing
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call s:Msg('tar#Browse', 'error', $"File not readable<{a:tarfile}>")
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endif
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let &report= repkeep
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return
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endif
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if &ma != 1
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set ma
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endif
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let b:tarfile= a:tarfile
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setlocal noswapfile
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setlocal buftype=nofile
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setlocal bufhidden=hide
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setlocal nobuflisted
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setlocal nowrap
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set ft=tar
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" give header
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let lastline= line("$")
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call setline(lastline+1,'" tar.vim version '.g:loaded_tar)
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call setline(lastline+2,'" Browsing tarfile '.a:tarfile)
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call setline(lastline+3,'" Select a file with cursor and press ENTER, "x" to extract a file')
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keepj $put =''
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keepj sil! 0d
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keepj $
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let tarfile= a:tarfile
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if has("win32unix") && executable("cygpath")
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" assuming cygwin
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let tarfile=substitute(system("cygpath -u ".shellescape(tarfile,0)),'\n$','','e')
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endif
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let curlast= line("$")
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if tarfile =~# '\.\(gz\)$'
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exe "sil! r! gzip -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(tgz\)$' || tarfile =~# '\.\(tbz\)$' || tarfile =~# '\.\(txz\)$' ||
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\ tarfile =~# '\.\(tzst\)$' || tarfile =~# '\.\(tlz4\)$'
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let header= s:Header(tarfile)
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if header =~? 'bzip2'
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exe "sil! r! bzip2 -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif header =~? 'bzip3'
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exe "sil! r! bzip3 -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif header =~? 'xz'
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exe "sil! r! xz -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif header =~? 'zstd'
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exe "sil! r! zstd --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif header =~? 'lz4'
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exe "sil! r! lz4 --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif header =~? 'gzip'
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exe "sil! r! gzip -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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endif
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elseif tarfile =~# '\.lrp'
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exe "sil! r! cat -- ".shellescape(tarfile,1)."|gzip -d -c -|".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(bz2\|tbz\|tb2\)$'
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exe "sil! r! bzip2 -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(bz3\|tb3\)$'
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exe "sil! r! bzip3 -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(lzma\|tlz\)$'
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exe "sil! r! lzma -d -c -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(xz\|txz\)$'
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exe "sil! r! xz --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(zst\|tzst\)$'
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exe "sil! r! zstd --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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elseif tarfile =~# '\.\(lz4\|tlz4\)$'
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exe "sil! r! lz4 --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_browseoptions." - "
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else
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if tarfile =~ '^\s*-'
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" A file name starting with a dash is taken as an option. Prepend ./ to avoid that.
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let tarfile = substitute(tarfile, '-', './-', '')
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endif
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exe "sil! r! ".g:tar_cmd." -".g:tar_browseoptions." ".shellescape(tarfile,1)
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endif
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if v:shell_error != 0
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call s:Msg('tar#Browse', 'warning', $"please check your g:tar_browseoptions '<{g:tar_browseoptions}>'")
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return
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endif
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" remove tar: Removing leading '/' from member names
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" Note: the message could be localized
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if search('^tar: ') > 0 || search(g:tar_leading_pat) > 0
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call append(3,'" Note: Path Traversal Attack detected!')
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let b:leading_slash = 1
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" remove the message output
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sil g/^tar: /d
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endif
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" set up maps supported for tar
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setlocal noma nomod ro
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noremap <silent> <buffer> <cr> :call <SID>TarBrowseSelect()<cr>
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noremap <silent> <buffer> x :call tar#Extract()<cr>
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if &mouse != ""
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noremap <silent> <buffer> <leftmouse> <leftmouse>:call <SID>TarBrowseSelect()<cr>
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endif
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let &report= repkeep
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endfun
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" ---------------------------------------------------------------------
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" TarBrowseSelect: {{{2
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fun! s:TarBrowseSelect()
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let repkeep= &report
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set report=10
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let fname= getline(".")
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let ls= get(b:, 'leading_slash', 0)
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" sanity check
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if fname =~ '^"'
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let &report= repkeep
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return
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endif
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" about to make a new window, need to use b:tarfile
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let tarfile= b:tarfile
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let curfile= expand("%")
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if has("win32unix") && executable("cygpath")
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" assuming cygwin
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let tarfile=substitute(system("cygpath -u ".shellescape(tarfile,0)),'\n$','','e')
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endif
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" open a new window (tar#Read will read a file into it)
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noswapfile new
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if !exists("g:tar_nomax") || g:tar_nomax == 0
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wincmd _
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endif
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let s:tblfile_{winnr()}= curfile
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let b:leading_slash= ls
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call tar#Read("tarfile:".tarfile.'::'.fname)
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filetype detect
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set nomod
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exe 'com! -buffer -nargs=? -complete=file TarDiff :call tar#Diff(<q-args>,"'.fnameescape(fname).'")'
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let &report= repkeep
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endfun
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" ---------------------------------------------------------------------
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" tar#Read: {{{2
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fun! tar#Read(fname)
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let repkeep= &report
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set report=10
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let tarfile = substitute(a:fname,'tarfile:\(.\{-}\)::.*$','\1','')
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let fname = substitute(a:fname,'tarfile:.\{-}::\(.*\)$','\1','')
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" be careful not to execute special crafted files
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let escape_file = fname->substitute(g:tar_leading_pat, '', '')->fnameescape()
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let curdir= getcwd()
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let b:curdir= curdir
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let tmpdir= tempname()
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let b:tmpdir= tmpdir
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if tmpdir =~ '\.'
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let tmpdir= substitute(tmpdir,'\.[^.]*$','','e')
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endif
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call mkdir(tmpdir,"p")
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" attempt to change to the indicated directory
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try
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exe "lcd ".fnameescape(tmpdir)
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catch /^Vim\%((\a\+)\)\=:E344/
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call s:Msg('tar#Read', 'error', "cannot lcd to temporary directory")
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let &report= repkeep
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return
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endtry
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" place temporary files under .../_ZIPVIM_/
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if isdirectory("_ZIPVIM_")
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call s:Rmdir("_ZIPVIM_")
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endif
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call mkdir("_ZIPVIM_")
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lcd _ZIPVIM_
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if has("win32unix") && executable("cygpath")
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" assuming cygwin
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let tarfile=substitute(system("cygpath -u ".shellescape(tarfile,0)),'\n$','','e')
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endif
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if fname =~ '\.bz2$' && executable("bzcat")
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let decmp= "|bzcat"
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let doro = 1
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elseif fname =~ '\.bz3$' && executable("bz3cat")
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let decmp= "|bz3cat"
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let doro = 1
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elseif fname =~ '\.t\=gz$' && executable("zcat")
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let decmp= "|zcat"
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let doro = 1
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elseif fname =~ '\.lzma$' && executable("lzcat")
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let decmp= "|lzcat"
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let doro = 1
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elseif fname =~ '\.xz$' && executable("xzcat")
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let decmp= "|xzcat"
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let doro = 1
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elseif fname =~ '\.zst$' && executable("zstdcat")
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let decmp= "|zstdcat"
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let doro = 1
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elseif fname =~ '\.lz4$' && executable("lz4cat")
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let decmp= "|lz4cat"
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let doro = 1
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else
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let decmp=""
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let doro = 0
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if fname =~ '\.bz2$\|\.bz3$\|\.gz$\|\.lzma$\|\.xz$\|\.zip$\|\.Z$'
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setlocal bin
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endif
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endif
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if tarfile =~# '\.bz2$'
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exe "sil! r! bzip2 -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif tarfile =~# '\.bz3$'
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exe "sil! r! bzip3 -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif tarfile =~# '\.\(gz\)$'
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exe "sil! r! gzip -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif tarfile =~# '\(\.tgz\|\.tbz\|\.txz\)'
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let filekind= s:Header(tarfile)
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if filekind =~? "bzip2"
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exe "sil! r! bzip2 -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif filekind =~ "bzip3"
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exe "sil! r! bzip3 -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif filekind =~? "xz"
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exe "sil! r! xz -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif filekind =~? "zstd"
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exe "sil! r! zstd --decompress --stdout -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif filekind =~? "gzip"
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exe "sil! r! gzip -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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endif
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elseif tarfile =~# '\.lrp$'
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exe "sil! r! cat -- ".shellescape(tarfile,1)." | gzip -d -c - | ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif tarfile =~# '\.lzma$'
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exe "sil! r! lzma -d -c -- ".shellescape(tarfile,1)."| ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif tarfile =~# '\.\(xz\|txz\)$'
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exe "sil! r! xz --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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elseif tarfile =~# '\.\(lz4\|tlz4\)$'
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exe "sil! r! lz4 --decompress --stdout -- ".shellescape(tarfile,1)." | ".g:tar_cmd." -".g:tar_readoptions." - ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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else
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if tarfile =~ '^\s*-'
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" A file name starting with a dash is taken as an option. Prepend ./ to avoid that.
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let tarfile = substitute(tarfile, '-', './-', '')
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endif
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exe "silent r! ".g:tar_cmd." -".g:tar_readoptions.shellescape(tarfile,1)." ".g:tar_secure.shellescape(fname,1).decmp
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exe "read ".escape_file
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endif
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if get(b:, 'leading_slash', 0)
|
|
sil g/^tar: /d
|
|
endif
|
|
|
|
redraw!
|
|
|
|
if v:shell_error != 0
|
|
lcd ..
|
|
call s:Rmdir("_ZIPVIM_")
|
|
exe "lcd ".fnameescape(curdir)
|
|
call s:Msg('tar#Read', 'error', $"sorry, unable to open or extract {tarfile} with {fname}")
|
|
endif
|
|
|
|
if doro
|
|
" because the reverse process of compressing changed files back into the tarball is not currently supported
|
|
setlocal ro
|
|
endif
|
|
|
|
let b:tarfile= a:fname
|
|
|
|
" cleanup
|
|
keepj sil! 0d
|
|
set nomod
|
|
|
|
let &report= repkeep
|
|
exe "lcd ".fnameescape(curdir)
|
|
silent exe "file tarfile::". fname->fnameescape()
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" tar#Write: {{{2
|
|
fun! tar#Write(fname)
|
|
let pwdkeep= getcwd()
|
|
let repkeep= &report
|
|
set report=10
|
|
let curdir= b:curdir
|
|
let tmpdir= b:tmpdir
|
|
|
|
" sanity checks
|
|
if !executable(g:tar_cmd)
|
|
redraw!
|
|
let &report= repkeep
|
|
return
|
|
endif
|
|
let tarfile = substitute(b:tarfile,'tarfile:\(.\{-}\)::.*$','\1','')
|
|
let fname = substitute(b:tarfile,'tarfile:.\{-}::\(.*\)$','\1','')
|
|
|
|
if get(b:, 'leading_slash', 0)
|
|
call s:Msg('tar#Write', 'error', $"sorry, not attempting to update {tarfile} with {fname}")
|
|
let &report= repkeep
|
|
return
|
|
endif
|
|
|
|
if !isdirectory(fnameescape(tmpdir))
|
|
call mkdir(fnameescape(tmpdir), 'p')
|
|
endif
|
|
exe $"lcd {fnameescape(tmpdir)}"
|
|
if isdirectory("_ZIPVIM_")
|
|
call s:Rmdir("_ZIPVIM_")
|
|
endif
|
|
call mkdir("_ZIPVIM_")
|
|
lcd _ZIPVIM_
|
|
let dir = fnamemodify(fname, ':p:h')
|
|
if dir !~# '_ZIPVIM_$'
|
|
call mkdir(dir)
|
|
endif
|
|
|
|
" handle compressed archives
|
|
if tarfile =~# '\.bz2'
|
|
call system("bzip2 -d -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.bz2','','e')
|
|
let compress= "bzip2 -- ".shellescape(tarfile,0)
|
|
elseif tarfile =~# '\.bz3'
|
|
call system("bzip3 -d -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.bz3','','e')
|
|
let compress= "bzip3 -- ".shellescape(tarfile,0)
|
|
elseif tarfile =~# '\.gz'
|
|
call system("gzip -d -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.gz','','e')
|
|
let compress= "gzip -- ".shellescape(tarfile,0)
|
|
elseif tarfile =~# '\.tgz'
|
|
call system("gzip -d -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.tgz','.tar','e')
|
|
let compress= "gzip -- ".shellescape(tarfile,0)
|
|
let tgz = 1
|
|
elseif tarfile =~# '\.xz'
|
|
call system("xz -d -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.xz','','e')
|
|
let compress= "xz -- ".shellescape(tarfile,0)
|
|
elseif tarfile =~# '\.zst'
|
|
call system("zstd --decompress --rm -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.zst','','e')
|
|
let compress= "zstd --rm -- ".shellescape(tarfile,0)
|
|
elseif tarfile =~# '\.lz4'
|
|
call system("lz4 --decompress --rm -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.lz4','','e')
|
|
let compress= "lz4 --rm -- ".shellescape(tarfile,0)
|
|
elseif tarfile =~# '\.lzma'
|
|
call system("lzma -d -- ".shellescape(tarfile,0))
|
|
let tarfile = substitute(tarfile,'\.lzma','','e')
|
|
let compress= "lzma -- ".shellescape(tarfile,0)
|
|
endif
|
|
" Note: no support for name.tar.tbz/.txz/.tgz/.tlz4/.tzst
|
|
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Write', 'error', $"sorry, unable to update {tarfile} with {fname}")
|
|
else
|
|
|
|
if fname =~ '/'
|
|
let dirpath = substitute(fname,'/[^/]\+$','','e')
|
|
if has("win32unix") && executable("cygpath")
|
|
let dirpath = substitute(system("cygpath ".shellescape(dirpath, 0)),'\n','','e')
|
|
endif
|
|
call mkdir(dirpath,"p")
|
|
endif
|
|
if tarfile !~ '/'
|
|
let tarfile= curdir.'/'.tarfile
|
|
endif
|
|
if tarfile =~ '^\s*-'
|
|
" A file name starting with a dash may be taken as an option. Prepend ./ to avoid that.
|
|
let tarfile = substitute(tarfile, '-', './-', '')
|
|
endif
|
|
|
|
" don't overwrite a file forcefully
|
|
exe "w ".fnameescape(fname)
|
|
if has("win32unix") && executable("cygpath")
|
|
let tarfile = substitute(system("cygpath ".shellescape(tarfile,0)),'\n','','e')
|
|
endif
|
|
|
|
" delete old file from tarfile
|
|
" Note: BSD tar does not support --delete flag
|
|
call system(g:tar_cmd." ".g:tar_delfile." ".shellescape(tarfile,0).g:tar_secure.shellescape(fname,0))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Write', 'error', $"sorry, unable to update {fnameescape(tarfile)} with {fnameescape(fname)} --delete not supported?")
|
|
else
|
|
" update tarfile with new file
|
|
call system(g:tar_cmd." -".g:tar_writeoptions." ".shellescape(tarfile,0).g:tar_secure.shellescape(fname,0))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Write', 'error', $"sorry, unable to update {fnameescape(tarfile)} with {fnameescape(fname)}")
|
|
elseif exists("compress")
|
|
call system(compress)
|
|
if exists("tgz")
|
|
call rename(tarfile.".gz",substitute(tarfile,'\.tar$','.tgz','e'))
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
" support writing tarfiles across a network
|
|
if s:tblfile_{winnr()} =~ '^\a\+://'
|
|
let tblfile= s:tblfile_{winnr()}
|
|
1split|noswapfile enew
|
|
let binkeep= &l:binary
|
|
let eikeep = &ei
|
|
set binary ei=all
|
|
exe "noswapfile e! ".fnameescape(tarfile)
|
|
call netrw#NetWrite(tblfile)
|
|
let &ei = eikeep
|
|
let &l:binary = binkeep
|
|
q!
|
|
unlet s:tblfile_{winnr()}
|
|
endif
|
|
endif
|
|
|
|
" cleanup and restore current directory
|
|
lcd ..
|
|
call s:Rmdir("_ZIPVIM_")
|
|
exe "lcd ".fnameescape(pwdkeep)
|
|
setlocal nomod
|
|
|
|
let &report= repkeep
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" tar#Diff: {{{2
|
|
fun! tar#Diff(userfname,fname)
|
|
let fname= a:fname
|
|
if a:userfname != ""
|
|
let fname= a:userfname
|
|
endif
|
|
exe "lcd ".fnameescape(b:tmpdir). '/_ZIPVIM_'
|
|
if filereadable(fname)
|
|
" sets current file (from tarball) for diff'ing
|
|
" splits window vertically
|
|
" opens original file, sets it for diff'ing
|
|
" sets up b:tardiff_otherbuf variables so each buffer knows about the other (for closing purposes)
|
|
diffthis
|
|
wincmd v
|
|
exe "noswapfile e ".fnameescape(fname)
|
|
diffthis
|
|
else
|
|
redraw!
|
|
echo "***warning*** unable to read file<".fname.">"
|
|
endif
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" tar#Extract: extract a file from a (possibly compressed) tar archive {{{2
|
|
fun! tar#Extract()
|
|
|
|
let repkeep= &report
|
|
set report=10
|
|
let fname= getline(".")
|
|
|
|
" sanity check
|
|
if fname =~ '^"'
|
|
let &report= repkeep
|
|
return
|
|
endif
|
|
|
|
let tarball = expand("%")
|
|
let tarbase = substitute(tarball,'\..*$','','')
|
|
|
|
let extractcmd= s:WinPath(g:tar_extractcmd)
|
|
if filereadable(tarbase.".tar")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ". fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tgz")
|
|
let extractcmd= substitute(extractcmd,"-","-z","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tgz ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tgz {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tar.gz")
|
|
let extractcmd= substitute(extractcmd,"-","-z","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar.gz ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar.gz {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tbz")
|
|
let extractcmd= substitute(extractcmd,"-","-j","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tbz ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tbz {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tar.bz2")
|
|
let extractcmd= substitute(extractcmd,"-","-j","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar.bz2 ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar.bz2 {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tar.bz3")
|
|
let extractcmd= substitute(extractcmd,"-","-j","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar.bz3 ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar.bz3 {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".txz")
|
|
let extractcmd= substitute(extractcmd,"-","-J","")
|
|
call system(extractcmd." ".shellescape(tarbase).".txz ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.txz {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tar.xz")
|
|
let extractcmd= substitute(extractcmd,"-","-J","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar.xz ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar.xz {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tzst")
|
|
let extractcmd= substitute(extractcmd,"-","--zstd","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tzst ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tzst {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tar.zst")
|
|
let extractcmd= substitute(extractcmd,"-","--zstd","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar.zst ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar.zst {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tlz4")
|
|
let extractcmd= substitute(extractcmd,"-","-I lz4","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tlz4 ".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tlz4 {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
|
|
elseif filereadable(tarbase.".tar.lz4")
|
|
let extractcmd= substitute(extractcmd,"-","-I lz4","")
|
|
call system(extractcmd." ".shellescape(tarbase).".tar.lz4".shellescape(fname))
|
|
if v:shell_error != 0
|
|
call s:Msg('tar#Extract', 'error', $"{extractcmd} {tarbase}.tar.lz4 {fname}: failed!")
|
|
else
|
|
echo "***note*** successfully extracted ".fname
|
|
endif
|
|
endif
|
|
|
|
" restore option
|
|
let &report= repkeep
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" s:Rmdir: {{{2
|
|
fun! s:Rmdir(fname)
|
|
call delete(a:fname, 'rf')
|
|
endfun
|
|
|
|
" s:FileHeader: {{{2
|
|
fun! s:Header(fname)
|
|
let header= readblob(a:fname, 0, 6)
|
|
" Nvim: see https://github.com/neovim/neovim/pull/34968
|
|
if header[0:2] == 0z425A68 " bzip2 header
|
|
return "bzip2"
|
|
elseif header[0:2] == 0z425A33 " bzip3 header
|
|
return "bzip3"
|
|
elseif header == 0zFD377A58.5A00 " xz header
|
|
return "xz"
|
|
elseif header[0:3] == 0z28B52FFD " zstd header
|
|
return "zstd"
|
|
elseif header[0:3] == 0z04224D18 " lz4 header
|
|
return "lz4"
|
|
elseif (header[0:1] == 0z1F9D ||
|
|
\ header[0:1] == 0z1F8B ||
|
|
\ header[0:1] == 0z1F9E ||
|
|
\ header[0:1] == 0z1FA0 ||
|
|
\ header[0:1] == 0z1F1E)
|
|
return "gzip"
|
|
endif
|
|
return "unknown"
|
|
endfun
|
|
|
|
" ---------------------------------------------------------------------
|
|
" s:WinPath: {{{2
|
|
fun! s:WinPath(path)
|
|
if (!g:netrw_cygwin || &shell !~ '\%(\<bash\>\|\<zsh\>\)\%(\.exe\)\=$') && has("win32")
|
|
" remove cygdrive prefix, if present
|
|
let path = substitute(a:path, '/cygdrive/\(.\)', '\1:', '')
|
|
" remove trailing slash (Win95)
|
|
let path = substitute(path, '\(\\\|/\)$', '', 'g')
|
|
" remove escaped spaces
|
|
let path = substitute(path, '\ ', ' ', 'g')
|
|
" convert slashes to backslashes
|
|
let path = substitute(path, '/', '\', 'g')
|
|
else
|
|
let path = a:path
|
|
endif
|
|
|
|
return path
|
|
endfun
|
|
|
|
" =====================================================================
|
|
" Modelines And Restoration: {{{1
|
|
let &cpo= s:keepcpo
|
|
unlet s:keepcpo
|
|
" vim:ts=8 fdm=marker
|