/usr/share/vim-scripts/plugin/gnupg.vim is in vim-scripts 20130814ubuntu1.
This file is owned by root:root, with mode 0o644.
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 | " Name: gnupg.vim
" Last Change: 2012 May 31
" Maintainer: James McCoy <vega.james@gmail.com>
" Original Author: Markus Braun <markus.braun@krawel.de>
" Summary: Vim plugin for transparent editing of gpg encrypted files.
" License: This program is free software; you can redistribute it and/or
" modify it under the terms of the GNU General Public License
" as published by the Free Software Foundation; either version
" 2 of the License, or (at your option) any later version.
" See http://www.gnu.org/copyleft/gpl-2.0.txt
"
" Section: Documentation {{{1
"
" Description: {{{2
"
" This script implements transparent editing of gpg encrypted files. The
" filename must have a ".gpg", ".pgp" or ".asc" suffix. When opening such
" a file the content is decrypted, when opening a new file the script will
" ask for the recipients of the encrypted file. The file content will be
" encrypted to all recipients before it is written. The script turns off
" viminfo, swapfile, and undofile to increase security.
"
" Installation: {{{2
"
" Copy the gnupg.vim file to the $HOME/.vim/plugin directory.
" Refer to ':help add-plugin', ':help add-global-plugin' and ':help
" runtimepath' for more details about Vim plugins.
"
" From "man 1 gpg-agent":
"
" ...
" You should always add the following lines to your .bashrc or whatever
" initialization file is used for all shell invocations:
"
" GPG_TTY=`tty`
" export GPG_TTY
"
" It is important that this environment variable always reflects the out‐
" put of the tty command. For W32 systems this option is not required.
" ...
"
" Most distributions provide software to ease handling of gpg and gpg-agent.
" Examples are keychain or seahorse.
"
" Commands: {{{2
"
" :GPGEditRecipients
" Opens a scratch buffer to change the list of recipients. Recipients that
" are unknown (not in your public key) are highlighted and have
" a prepended "!". Closing the buffer makes the changes permanent.
"
" :GPGViewRecipients
" Prints the list of recipients.
"
" :GPGEditOptions
" Opens a scratch buffer to change the options for encryption (symmetric,
" asymmetric, signing). Closing the buffer makes the changes permanent.
" WARNING: There is no check of the entered options, so you need to know
" what you are doing.
"
" :GPGViewOptions
" Prints the list of options.
"
" Variables: {{{2
"
" g:GPGExecutable
" If set used as gpg executable, otherwise the system chooses what is run
" when "gpg" is called. Defaults to "gpg".
"
" g:GPGUseAgent
" If set to 0 a possible available gpg-agent won't be used. Defaults to 1.
"
" g:GPGPreferSymmetric
" If set to 1 symmetric encryption is preferred for new files. Defaults to 0.
"
" g:GPGPreferArmor
" If set to 1 armored data is preferred for new files. Defaults to 0
" unless a "*.asc" file is being edited.
"
" g:GPGPreferSign
" If set to 1 signed data is preferred for new files. Defaults to 0.
"
" g:GPGDefaultRecipients
" If set, these recipients are used as defaults when no other recipient is
" defined. This variable is a Vim list. Default is unset.
"
" g:GPGUsePipes
" If set to 1, use pipes instead of temporary files when interacting with
" gnupg. When set to 1, this can cause terminal-based gpg agents to not
" display correctly when prompting for passwords. Defaults to 0.
"
" g:GPGHomedir
" If set, specifies the directory that will be used for GPG's homedir.
" This corresponds to gpg's --homedir option. This variable is a Vim
" string.
"
" Known Issues: {{{2
"
" In some cases gvim can't decrypt files
" This is caused by the fact that a running gvim has no TTY and thus gpg is
" not able to ask for the passphrase by itself. This is a problem for Windows
" and Linux versions of gvim and could not be solved unless a "terminal
" emulation" is implemented for gvim. To circumvent this you have to use any
" combination of gpg-agent and a graphical pinentry program:
"
" - gpg-agent only:
" you need to provide the passphrase for the needed key to gpg-agent
" in a terminal before you open files with gvim which require this key.
"
" - pinentry only:
" you will get a popup window every time you open a file that needs to
" be decrypted.
"
" - gpgagent and pinentry:
" you will get a popup window the first time you open a file that
" needs to be decrypted.
"
" Credits: {{{2
"
" - Mathieu Clabaut for inspirations through his vimspell.vim script.
" - Richard Bronosky for patch to enable ".pgp" suffix.
" - Erik Remmelzwaal for patch to enable windows support and patient beta
" testing.
" - Lars Becker for patch to make gpg2 working.
" - Thomas Arendsen Hein for patch to convert encoding of gpg output.
" - Karl-Heinz Ruskowski for patch to fix unknown recipients and trust model
" and patient beta testing.
" - Giel van Schijndel for patch to get GPG_TTY dynamically.
" - Sebastian Luettich for patch to fix issue with symmetric encryption an set
" recipients.
" - Tim Swast for patch to generate signed files.
" - James Vega for patches for better '*.asc' handling, better filename
" escaping and better handling of multiple keyrings.
"
" Section: Plugin header {{{1
" guard against multiple loads {{{2
if (exists("g:loaded_gnupg") || &cp || exists("#GnuPG"))
finish
endif
let g:loaded_gnupg = '2.5'
let s:GPGInitRun = 0
" check for correct vim version {{{2
if (v:version < 702)
echohl ErrorMsg | echo 'plugin gnupg.vim requires Vim version >= 7.2' | echohl None
finish
endif
" Section: Autocmd setup {{{1
augroup GnuPG
autocmd!
" do the decryption
autocmd BufReadCmd *.\(gpg\|asc\|pgp\) call s:GPGInit(1)
autocmd BufReadCmd *.\(gpg\|asc\|pgp\) call s:GPGDecrypt(1)
autocmd BufReadCmd *.\(gpg\|asc\|pgp\) call s:GPGBufReadPost()
autocmd FileReadCmd *.\(gpg\|asc\|pgp\) call s:GPGInit(0)
autocmd FileReadCmd *.\(gpg\|asc\|pgp\) call s:GPGDecrypt(0)
" convert all text to encrypted text before writing
autocmd BufWriteCmd *.\(gpg\|asc\|pgp\) call s:GPGBufWritePre()
autocmd BufWriteCmd,FileWriteCmd *.\(gpg\|asc\|pgp\) call s:GPGInit(0)
autocmd BufWriteCmd,FileWriteCmd *.\(gpg\|asc\|pgp\) call s:GPGEncrypt()
" cleanup on leaving vim
autocmd VimLeave *.\(gpg\|asc\|pgp\) call s:GPGCleanup()
augroup END
" Section: Constants {{{1
let s:GPGMagicString = "\t \t"
let s:keyPattern = '\%(0x\)\=[[:xdigit:]]\{8,16}'
" Section: Highlight setup {{{1
highlight default link GPGWarning WarningMsg
highlight default link GPGError ErrorMsg
highlight default link GPGHighlightUnknownRecipient ErrorMsg
" Section: Functions {{{1
" Function: s:GPGInit(bufread) {{{2
"
" initialize the plugin
" The bufread argument specifies whether this was called due to BufReadCmd
"
function s:GPGInit(bufread)
call s:GPGDebug(3, printf(">>>>>>>> Entering s:GPGInit(%d)", a:bufread))
" For FileReadCmd, we're reading the contents into another buffer. If that
" buffer is also destined to be encrypted, then these settings will have
" already been set, otherwise don't set them since it limits the
" functionality of the cleartext buffer.
if a:bufread
" we don't want a swap file, as it writes unencrypted data to disk
setl noswapfile
" if persistent undo is present, disable it for this buffer
if exists('+undofile')
setl noundofile
endif
" first make sure nothing is written to ~/.viminfo while editing
" an encrypted file.
set viminfo=
endif
" the rest only has to be run once
if s:GPGInitRun
return
endif
" check what gpg command to use
if (!exists("g:GPGExecutable"))
let g:GPGExecutable = "gpg --trust-model always"
endif
" check if gpg-agent is allowed
if (!exists("g:GPGUseAgent"))
let g:GPGUseAgent = 1
endif
" check if symmetric encryption is preferred
if (!exists("g:GPGPreferSymmetric"))
let g:GPGPreferSymmetric = 0
endif
" check if armored files are preferred
if (!exists("g:GPGPreferArmor"))
" .asc files should be armored as that's what the extension is used for
if expand('<afile>') =~ '\.asc$'
let g:GPGPreferArmor = 1
else
let g:GPGPreferArmor = 0
endif
endif
" check if signed files are preferred
if (!exists("g:GPGPreferSign"))
let g:GPGPreferSign = 0
endif
" start with empty default recipients if none is defined so far
if (!exists("g:GPGDefaultRecipients"))
let g:GPGDefaultRecipients = []
endif
" prefer not to use pipes since it can garble gpg agent display
if (!exists("g:GPGUsePipes"))
let g:GPGUsePipes = 0
endif
" allow alternate gnupg homedir
if (!exists('g:GPGHomedir'))
let g:GPGHomedir = ''
endif
" print version
call s:GPGDebug(1, "gnupg.vim ". g:loaded_gnupg)
" determine if gnupg can use the gpg-agent
if (exists("$GPG_AGENT_INFO") && g:GPGUseAgent == 1)
if (!exists("$GPG_TTY") && !has("gui_running"))
let $GPG_TTY = system("tty")
if (v:shell_error)
let $GPG_TTY = ""
echohl GPGError
echom "The GPG_TTY is not set and no TTY could be found using the `tty` command!"
echom "gpg-agent might not work."
echohl None
endif
endif
let s:GPGCommand = g:GPGExecutable . " --use-agent"
else
let s:GPGCommand = g:GPGExecutable . " --no-use-agent"
endif
" don't use tty in gvim except for windows: we get their a tty for free.
" FIXME find a better way to avoid an error.
" with this solution only --use-agent will work
if (has("gui_running") && !has("gui_win32"))
let s:GPGCommand = s:GPGCommand . " --no-tty"
endif
" setup shell environment for unix and windows
let s:shellredirsave = &shellredir
let s:shellsave = &shell
let s:shelltempsave = &shelltemp
" noshelltemp isn't currently supported on Windows, but it doesn't cause any
" errors and this future proofs us against requiring changes if Windows
" gains noshelltemp functionality
let s:shelltemp = !g:GPGUsePipes
if (has("unix"))
" unix specific settings
let s:shellredir = ">%s 2>&1"
let s:shell = '/bin/sh'
let s:stderrredirnull = '2>/dev/null'
let s:GPGCommand = "LANG=C LC_ALL=C " . s:GPGCommand
else
" windows specific settings
let s:shellredir = '>%s'
let s:shell = &shell
let s:stderrredirnull = '2>nul'
endif
call s:GPGDebug(3, "shellredirsave: " . s:shellredirsave)
call s:GPGDebug(3, "shellsave: " . s:shellsave)
call s:GPGDebug(3, "shelltempsave: " . s:shelltempsave)
call s:GPGDebug(3, "shell: " . s:shell)
call s:GPGDebug(3, "shellcmdflag: " . &shellcmdflag)
call s:GPGDebug(3, "shellxquote: " . &shellxquote)
call s:GPGDebug(3, "shellredir: " . s:shellredir)
call s:GPGDebug(3, "stderrredirnull: " . s:stderrredirnull)
call s:GPGDebug(3, "shell implementation: " . resolve(s:shell))
" find the supported algorithms
let output = s:GPGSystem({ 'level': 2, 'args': '--version' })
let s:GPGPubkey = substitute(output, ".*Pubkey: \\(.\\{-}\\)\n.*", "\\1", "")
let s:GPGCipher = substitute(output, ".*Cipher: \\(.\\{-}\\)\n.*", "\\1", "")
let s:GPGHash = substitute(output, ".*Hash: \\(.\\{-}\\)\n.*", "\\1", "")
let s:GPGCompress = substitute(output, ".*Compress.\\{-}: \\(.\\{-}\\)\n.*", "\\1", "")
call s:GPGDebug(2, "public key algorithms: " . s:GPGPubkey)
call s:GPGDebug(2, "cipher algorithms: " . s:GPGCipher)
call s:GPGDebug(2, "hashing algorithms: " . s:GPGHash)
call s:GPGDebug(2, "compression algorithms: " . s:GPGCompress)
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGInit()")
let s:GPGInitRun = 1
endfunction
" Function: s:GPGCleanup() {{{2
"
" cleanup on leaving vim
"
function s:GPGCleanup()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGCleanup()")
" wipe out screen
new +only
redraw!
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGCleanup()")
endfunction
" Function: s:GPGDecrypt(bufread) {{{2
"
" decrypt the buffer and find all recipients of the encrypted file
" The bufread argument specifies whether this was called due to BufReadCmd
"
function s:GPGDecrypt(bufread)
call s:GPGDebug(3, printf(">>>>>>>> Entering s:GPGDecrypt(%d)", a:bufread))
" get the filename of the current buffer
let filename = expand("<afile>:p")
" clear GPGRecipients and GPGOptions
let b:GPGRecipients = g:GPGDefaultRecipients
let b:GPGOptions = []
" File doesn't exist yet, so nothing to decrypt
if empty(glob(filename))
return
endif
" Only let this if the file actually exists, otherwise GPG functionality
" will be disabled when editing a buffer that doesn't yet have a backing
" file
let b:GPGEncrypted = 0
" find the recipients of the file
let cmd = { 'level': 3 }
let cmd.args = '--verbose --decrypt --list-only --dry-run --batch --no-use-agent --logger-fd 1 ' . shellescape(filename)
let output = s:GPGSystem(cmd)
" Suppress the "N more lines" message when editing a file, not when reading
" the contents of a file into a buffer
let silent = a:bufread ? 'silent ' : ''
let asymmPattern = 'gpg: public key is ' . s:keyPattern
" check if the file is symmetric/asymmetric encrypted
if (match(output, "gpg: encrypted with [[:digit:]]\\+ passphrase") >= 0)
" file is symmetric encrypted
let b:GPGEncrypted = 1
call s:GPGDebug(1, "this file is symmetric encrypted")
let b:GPGOptions += ["symmetric"]
" find the used cipher algorithm
let cipher = substitute(output, ".*gpg: \\([^ ]\\+\\) encrypted data.*", "\\1", "")
if (match(s:GPGCipher, "\\<" . cipher . "\\>") >= 0)
let b:GPGOptions += ["cipher-algo " . cipher]
call s:GPGDebug(1, "cipher-algo is " . cipher)
else
echohl GPGWarning
echom "The cipher " . cipher . " is not known by the local gpg command. Using default!"
echo
echohl None
endif
elseif (match(output, asymmPattern) >= 0)
" file is asymmetric encrypted
let b:GPGEncrypted = 1
call s:GPGDebug(1, "this file is asymmetric encrypted")
let b:GPGOptions += ["encrypt"]
" find the used public keys
let start = match(output, asymmPattern)
while (start >= 0)
let start = start + strlen("gpg: public key is ")
let recipient = matchstr(output, s:keyPattern, start)
call s:GPGDebug(1, "recipient is " . recipient)
let name = s:GPGNameToID(recipient)
if (strlen(name) > 0)
let b:GPGRecipients += [name]
call s:GPGDebug(1, "name of recipient is " . name)
else
let b:GPGRecipients += [recipient]
echohl GPGWarning
echom "The recipient \"" . recipient . "\" is not in your public keyring!"
echohl None
end
let start = match(output, asymmPattern, start)
endwhile
else
" file is not encrypted
let b:GPGEncrypted = 0
call s:GPGDebug(1, "this file is not encrypted")
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
exe printf('%sr %s', silent, fnameescape(filename))
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGDecrypt()")
return
endif
" check if the message is armored
if (match(output, "gpg: armor header") >= 0)
call s:GPGDebug(1, "this file is armored")
let b:GPGOptions += ["armor"]
endif
" finally decrypt the buffer content
" since even with the --quiet option passphrase typos will be reported,
" we must redirect stderr (using shell temporarily)
call s:GPGDebug(1, "decrypting file")
let cmd = { 'level': 1, 'ex': silent . 'r !' }
let cmd.args = '--quiet --decrypt ' . shellescape(filename, 1)
call s:GPGExecute(cmd)
if (v:shell_error) " message could not be decrypted
echohl GPGError
let blackhole = input("Message could not be decrypted! (Press ENTER)")
echohl None
" Only wipeout the buffer if we were creating one to start with.
" FileReadCmd just reads the content into the existing buffer
if a:bufread
silent bwipeout!
endif
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGDecrypt()")
return
endif
" refresh screen
redraw!
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGDecrypt()")
endfunction
" Function: s:GPGBufReadPost() {{{2
"
" Handle functionality specific to opening a file for reading rather than
" reading the contents of a file into a buffer
"
function s:GPGBufReadPost()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGBufReadPost()")
" In order to make :undo a no-op immediately after the buffer is read,
" we need to do this dance with 'undolevels'. Actually discarding the undo
" history requires performing a change after setting 'undolevels' to -1 and,
" luckily, we have one we need to do (delete the extra line from the :r
" command)
let levels = &undolevels
set undolevels=-1
silent 1delete
let &undolevels = levels
" call the autocommand for the file minus .gpg$
silent execute ':doautocmd BufReadPost ' . fnameescape(expand('<afile>:r'))
call s:GPGDebug(2, 'called autocommand for ' . fnameescape(expand('<afile>:r')))
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGBufReadPost()")
endfunction
" Function: s:GPGBufWritePre() {{{2
"
" Handle functionality specific to saving an entire buffer to a file rather
" than saving a partial buffer
"
function s:GPGBufWritePre()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGBufWritePre()")
" call the autocommand for the file minus .gpg$
silent execute ':doautocmd BufWritePre ' . fnameescape(expand('<afile>:r'))
call s:GPGDebug(2, 'called autocommand for ' . fnameescape(expand('<afile>:r')))
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGBufWritePre()")
endfunction
" Function: s:GPGEncrypt() {{{2
"
" encrypts the buffer to all previous recipients
"
function s:GPGEncrypt()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGEncrypt()")
" store encoding and switch to a safe one
if (&fileencoding != &encoding)
let s:GPGEncoding = &encoding
let &encoding = &fileencoding
call s:GPGDebug(2, "encoding was \"" . s:GPGEncoding . "\", switched to \"" . &encoding . "\"")
else
let s:GPGEncoding = ""
call s:GPGDebug(2, "encoding and fileencoding are the same (\"" . &encoding . "\"), not switching")
endif
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGError
let blackhole = input("Message could not be encrypted! (Press ENTER)")
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEncrypt()")
return
endif
" initialize GPGOptions if not happened before
if (!exists("b:GPGOptions") || len(b:GPGOptions) == 0)
let b:GPGOptions = []
if (exists("g:GPGPreferSymmetric") && g:GPGPreferSymmetric == 1)
let b:GPGOptions += ["symmetric"]
let b:GPGRecipients = []
else
let b:GPGOptions += ["encrypt"]
endif
if (exists("g:GPGPreferArmor") && g:GPGPreferArmor == 1)
let b:GPGOptions += ["armor"]
endif
if (exists("g:GPGPreferSign") && g:GPGPreferSign == 1)
let b:GPGOptions += ["sign"]
endif
call s:GPGDebug(1, "no options set, so using default options: " . string(b:GPGOptions))
endif
" built list of options
let options = ""
for option in b:GPGOptions
let options = options . " --" . option . " "
endfor
if (!exists('b:GPGRecipients'))
let b:GPGRecipients = []
endif
" check here again if all recipients are available in the keyring
let [ recipients, unknownrecipients ] = s:GPGCheckRecipients(b:GPGRecipients)
" check if there are unknown recipients and warn
if (len(unknownrecipients) > 0)
echohl GPGWarning
echom "Please use GPGEditRecipients to correct!!"
echo
echohl None
" Let user know whats happend and copy known_recipients back to buffer
let dummy = input("Press ENTER to quit")
endif
" built list of recipients
if (len(recipients) > 0)
for gpgid in recipients
let options = options . " -r " . gpgid
endfor
endif
" encrypt the buffer
let destfile = tempname()
let cmd = { 'level': 1, 'ex': "'[,']w !" }
let cmd.args = '--quiet --no-encrypt-to ' . options
let cmd.redirect = '>' . shellescape(destfile, 1)
call s:GPGExecute(cmd)
" restore encoding
if (s:GPGEncoding != "")
let &encoding = s:GPGEncoding
call s:GPGDebug(2, "restored encoding \"" . &encoding . "\"")
endif
if (v:shell_error) " message could not be encrypted
" Command failed, so clean up the tempfile
call delete(destfile)
echohl GPGError
let blackhole = input("Message could not be encrypted! (Press ENTER)")
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEncrypt()")
return
endif
call rename(destfile, resolve(expand('<afile>')))
setl nomodified
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEncrypt()")
endfunction
" Function: s:GPGViewRecipients() {{{2
"
" echo the recipients
"
function s:GPGViewRecipients()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGViewRecipients()")
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGViewRecipients()")
return
endif
let [ recipients, unknownrecipients ] = s:GPGCheckRecipients(b:GPGRecipients)
echo 'This file has following recipients (Unknown recipients have a prepended "!"):'
" echo the recipients
for name in recipients
let name = s:GPGIDToName(name)
echo name
endfor
" echo the unknown recipients
echohl GPGWarning
for name in unknownrecipients
let name = "!" . name
echo name
endfor
echohl None
" check if there is any known recipient
if (len(recipients) == 0)
echohl GPGError
echom 'There are no known recipients!'
echohl None
endif
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGViewRecipients()")
endfunction
" Function: s:GPGEditRecipients() {{{2
"
" create a scratch buffer with all recipients to add/remove recipients
"
function s:GPGEditRecipients()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGEditRecipients()")
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEditRecipients()")
return
endif
" only do this if it isn't already a GPGRecipients_* buffer
if (match(bufname("%"), "^\\(GPGRecipients_\\|GPGOptions_\\)") != 0 && match(bufname("%"), "\.\\(gpg\\|asc\\|pgp\\)$") >= 0)
" save buffer name
let buffername = bufname("%")
let editbuffername = "GPGRecipients_" . buffername
" check if this buffer exists
if (!bufexists(editbuffername))
" create scratch buffer
execute 'silent! split ' . fnameescape(editbuffername)
" add a autocommand to regenerate the recipients after a write
autocmd BufHidden,BufUnload,BufWriteCmd <buffer> call s:GPGFinishRecipientsBuffer()
else
if (bufwinnr(editbuffername) >= 0)
" switch to scratch buffer window
execute 'silent! ' . bufwinnr(editbuffername) . "wincmd w"
else
" split scratch buffer window
execute 'silent! sbuffer ' . fnameescape(editbuffername)
" add a autocommand to regenerate the recipients after a write
autocmd BufHidden,BufUnload,BufWriteCmd <buffer> call s:GPGFinishRecipientsBuffer()
endif
" empty the buffer
silent %delete
endif
" Mark the buffer as a scratch buffer
setlocal buftype=acwrite
setlocal bufhidden=hide
setlocal noswapfile
setlocal nowrap
setlocal nobuflisted
setlocal nonumber
" so we know for which other buffer this edit buffer is
let b:GPGCorrespondingTo = buffername
" put some comments to the scratch buffer
silent put ='GPG: ----------------------------------------------------------------------'
silent put ='GPG: Please edit the list of recipients, one recipient per line.'
silent put ='GPG: Unknown recipients have a prepended \"!\".'
silent put ='GPG: Lines beginning with \"GPG:\" are removed automatically.'
silent put ='GPG: Data after recipients between and including \"(\" and \")\" is ignored.'
silent put ='GPG: Closing this buffer commits changes.'
silent put ='GPG: ----------------------------------------------------------------------'
" get the recipients
let [ recipients, unknownrecipients ] = s:GPGCheckRecipients(getbufvar(b:GPGCorrespondingTo, "GPGRecipients"))
" if there are no known or unknown recipients, use the default ones
if (len(recipients) == 0 && len(unknownrecipients) == 0)
if (type(g:GPGDefaultRecipients) == type([]))
let [ recipients, unknownrecipients ] = s:GPGCheckRecipients(g:GPGDefaultRecipients)
else
echohl GPGWarning
echom "g:GPGDefaultRecipients is not a Vim list, please correct this in your vimrc!"
echohl None
endif
endif
" put the recipients in the scratch buffer
for name in recipients
let name = s:GPGIDToName(name)
silent put =name
endfor
" put the unknown recipients in the scratch buffer
let syntaxPattern = "\\(nonexxistinwordinthisbuffer"
for name in unknownrecipients
let name = "!" . name
let syntaxPattern = syntaxPattern . "\\|" . fnameescape(name)
silent put =name
endfor
let syntaxPattern = syntaxPattern . "\\)"
" define highlight
if (has("syntax") && exists("g:syntax_on"))
execute 'syntax match GPGUnknownRecipient "' . syntaxPattern . '"'
highlight clear GPGUnknownRecipient
highlight link GPGUnknownRecipient GPGHighlightUnknownRecipient
syntax match GPGComment "^GPG:.*$"
execute 'syntax match GPGComment "' . s:GPGMagicString . '.*$"'
highlight clear GPGComment
highlight link GPGComment Comment
endif
" delete the empty first line
silent 1delete
" jump to the first recipient
silent $
endif
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEditRecipients()")
endfunction
" Function: s:GPGFinishRecipientsBuffer() {{{2
"
" create a new recipient list from RecipientsBuffer
"
function s:GPGFinishRecipientsBuffer()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGFinishRecipientsBuffer()")
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGFinishRecipientsBuffer()")
return
endif
" go to buffer before doing work
if (bufnr("%") != expand("<abuf>"))
" switch to scratch buffer window
execute 'silent! ' . bufwinnr(expand("<afile>")) . "wincmd w"
endif
" delete the autocommand
autocmd! * <buffer>
" get the recipients from the scratch buffer
let recipients = []
let lines = getline(1,"$")
for recipient in lines
let matches = matchlist(recipient, '^\(.\{-}\)\%(' . s:GPGMagicString . '(ID:\s\+\(' . s:keyPattern . '\)\s\+.*\)\=$')
let recipient = matches[2] ? matches[2] : matches[1]
" delete all spaces at beginning and end of the recipient
" also delete a '!' at the beginning of the recipient
let recipient = substitute(recipient, "^[[:space:]!]*\\(.\\{-}\\)[[:space:]]*$", "\\1", "")
" delete comment lines
let recipient = substitute(recipient, "^GPG:.*$", "", "")
" only do this if the line is not empty
if (strlen(recipient) > 0)
let gpgid = s:GPGNameToID(recipient)
if (strlen(gpgid) > 0)
if (match(recipients, gpgid) < 0)
let recipients += [gpgid]
endif
else
if (match(recipients, recipient) < 0)
let recipients += [recipient]
echohl GPGWarning
echom "The recipient \"" . recipient . "\" is not in your public keyring!"
echohl None
endif
endif
endif
endfor
" write back the new recipient list to the corresponding buffer and mark it
" as modified. Buffer is now for sure a encrypted buffer.
call setbufvar(b:GPGCorrespondingTo, "GPGRecipients", recipients)
call setbufvar(b:GPGCorrespondingTo, "&mod", 1)
call setbufvar(b:GPGCorrespondingTo, "GPGEncrypted", 1)
" check if there is any known recipient
if (len(recipients) == 0)
echohl GPGError
echom 'There are no known recipients!'
echohl None
endif
" reset modified flag
setl nomodified
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGFinishRecipientsBuffer()")
endfunction
" Function: s:GPGViewOptions() {{{2
"
" echo the recipients
"
function s:GPGViewOptions()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGViewOptions()")
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGViewOptions()")
return
endif
if (exists("b:GPGOptions"))
echo 'This file has following options:'
" echo the options
for option in b:GPGOptions
echo option
endfor
endif
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGViewOptions()")
endfunction
" Function: s:GPGEditOptions() {{{2
"
" create a scratch buffer with all recipients to add/remove recipients
"
function s:GPGEditOptions()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGEditOptions()")
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEditOptions()")
return
endif
" only do this if it isn't already a GPGOptions_* buffer
if (match(bufname("%"), "^\\(GPGRecipients_\\|GPGOptions_\\)") != 0 && match(bufname("%"), "\.\\(gpg\\|asc\\|pgp\\)$") >= 0)
" save buffer name
let buffername = bufname("%")
let editbuffername = "GPGOptions_" . buffername
" check if this buffer exists
if (!bufexists(editbuffername))
" create scratch buffer
execute 'silent! split ' . fnameescape(editbuffername)
" add a autocommand to regenerate the options after a write
autocmd BufHidden,BufUnload,BufWriteCmd <buffer> call s:GPGFinishOptionsBuffer()
else
if (bufwinnr(editbuffername) >= 0)
" switch to scratch buffer window
execute 'silent! ' . bufwinnr(editbuffername) . "wincmd w"
else
" split scratch buffer window
execute 'silent! sbuffer ' . fnameescape(editbuffername)
" add a autocommand to regenerate the options after a write
autocmd BufHidden,BufUnload,BufWriteCmd <buffer> call s:GPGFinishOptionsBuffer()
endif
" empty the buffer
silent %delete
endif
" Mark the buffer as a scratch buffer
setlocal buftype=nofile
setlocal noswapfile
setlocal nowrap
setlocal nobuflisted
setlocal nonumber
" so we know for which other buffer this edit buffer is
let b:GPGCorrespondingTo = buffername
" put some comments to the scratch buffer
silent put ='GPG: ----------------------------------------------------------------------'
silent put ='GPG: THERE IS NO CHECK OF THE ENTERED OPTIONS!'
silent put ='GPG: YOU NEED TO KNOW WHAT YOU ARE DOING!'
silent put ='GPG: IF IN DOUBT, QUICKLY EXIT USING :x OR :bd.'
silent put ='GPG: Please edit the list of options, one option per line.'
silent put ='GPG: Please refer to the gpg documentation for valid options.'
silent put ='GPG: Lines beginning with \"GPG:\" are removed automatically.'
silent put ='GPG: Closing this buffer commits changes.'
silent put ='GPG: ----------------------------------------------------------------------'
" put the options in the scratch buffer
let options = getbufvar(b:GPGCorrespondingTo, "GPGOptions")
for option in options
silent put =option
endfor
" delete the empty first line
silent 1delete
" jump to the first option
silent $
" define highlight
if (has("syntax") && exists("g:syntax_on"))
syntax match GPGComment "^GPG:.*$"
highlight clear GPGComment
highlight link GPGComment Comment
endif
endif
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGEditOptions()")
endfunction
" Function: s:GPGFinishOptionsBuffer() {{{2
"
" create a new option list from OptionsBuffer
"
function s:GPGFinishOptionsBuffer()
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGFinishOptionsBuffer()")
" guard for unencrypted files
if (exists("b:GPGEncrypted") && b:GPGEncrypted == 0)
echohl GPGWarning
echom "File is not encrypted, all GPG functions disabled!"
echohl None
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGFinishOptionsBuffer()")
return
endif
" go to buffer before doing work
if (bufnr("%") != expand("<abuf>"))
" switch to scratch buffer window
execute 'silent! ' . bufwinnr(expand("<afile>")) . "wincmd w"
endif
" clear options and unknownOptions
let options = []
let unknownOptions = []
" delete the autocommand
autocmd! * <buffer>
" get the options from the scratch buffer
let lines = getline(1, "$")
for option in lines
" delete all spaces at beginning and end of the option
" also delete a '!' at the beginning of the option
let option = substitute(option, "^[[:space:]!]*\\(.\\{-}\\)[[:space:]]*$", "\\1", "")
" delete comment lines
let option = substitute(option, "^GPG:.*$", "", "")
" only do this if the line is not empty
if (strlen(option) > 0 && match(options, option) < 0)
let options += [option]
endif
endfor
" write back the new option list to the corresponding buffer and mark it
" as modified
call setbufvar(b:GPGCorrespondingTo, "GPGOptions", options)
call setbufvar(b:GPGCorrespondingTo, "&mod", 1)
" reset modified flag
setl nomodified
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGFinishOptionsBuffer()")
endfunction
" Function: s:GPGCheckRecipients(tocheck) {{{2
"
" check if recipients are known
" Returns: two lists recipients and unknownrecipients
"
function s:GPGCheckRecipients(tocheck)
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGCheckRecipients()")
let recipients = []
let unknownrecipients = []
if (type(a:tocheck) == type([]))
for recipient in a:tocheck
let gpgid = s:GPGNameToID(recipient)
if (strlen(gpgid) > 0)
if (match(recipients, gpgid) < 0)
let recipients += [gpgid]
endif
else
if (match(unknownrecipients, recipient) < 0)
let unknownrecipients += [recipient]
echohl GPGWarning
echom "The recipient \"" . recipient . "\" is not in your public keyring!"
echohl None
endif
end
endfor
endif
call s:GPGDebug(2, "recipients are: " . string(recipients))
call s:GPGDebug(2, "unknown recipients are: " . string(unknownrecipients))
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGCheckRecipients()")
return [ recipients, unknownrecipients ]
endfunction
" Function: s:GPGNameToID(name) {{{2
"
" find GPG key ID corresponding to a name
" Returns: ID for the given name
"
function s:GPGNameToID(name)
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGNameToID()")
" ask gpg for the id for a name
let cmd = { 'level': 2 }
let cmd.args = '--quiet --with-colons --fixed-list-mode --list-keys ' . shellescape(a:name)
let output = s:GPGSystem(cmd)
" when called with "--with-colons" gpg encodes its output _ALWAYS_ as UTF-8,
" so convert it, if necessary
if (&encoding != "utf-8")
let output = iconv(output, "utf-8", &encoding)
endif
let lines = split(output, "\n")
" parse the output of gpg
let pubseen = 0
let counter = 0
let gpgids = []
let duplicates = {}
let choices = "The name \"" . a:name . "\" is ambiguous. Please select the correct key:\n"
for line in lines
" check if this line has already been processed
if !has_key(duplicates, line)
let duplicates[line] = 1
let fields = split(line, ":")
" search for the next uid
if pubseen
if (fields[0] == "uid")
let choices = choices . " " . fields[9] . "\n"
else
let pubseen = 0
endif
" search for the next pub
else
if (fields[0] == "pub")
" Ignore keys which are not usable for encryption
if fields[11] !~? 'e'
continue
endif
let identity = fields[4]
let gpgids += [identity]
if exists("*strftime")
let choices = choices . counter . ": ID: 0x" . identity . " created at " . strftime("%c", fields[5]) . "\n"
else
let choices = choices . counter . ": ID: 0x" . identity . "\n"
endif
let counter = counter+1
let pubseen = 1
endif
endif
endif
endfor
" counter > 1 means we have more than one results
let answer = 0
if (counter > 1)
let choices = choices . "Enter number: "
let answer = input(choices, "0")
while (answer == "")
let answer = input("Enter number: ", "0")
endwhile
endif
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGNameToID()")
return get(gpgids, answer, "")
endfunction
" Function: s:GPGIDToName(identity) {{{2
"
" find name corresponding to a GPG key ID
" Returns: Name for the given ID
"
function s:GPGIDToName(identity)
call s:GPGDebug(3, ">>>>>>>> Entering s:GPGIDToName()")
" TODO is the encryption subkey really unique?
" ask gpg for the id for a name
let cmd = { 'level': 2 }
let cmd.args = '--quiet --with-colons --fixed-list-mode --list-keys ' . a:identity
let output = s:GPGSystem(cmd)
" when called with "--with-colons" gpg encodes its output _ALWAYS_ as UTF-8,
" so convert it, if necessary
if (&encoding != "utf-8")
let output = iconv(output, "utf-8", &encoding)
endif
let lines = split(output, "\n")
" parse the output of gpg
let pubseen = 0
let uid = ""
for line in lines
let fields = split(line, ":")
if !pubseen " search for the next pub
if (fields[0] == "pub")
" Ignore keys which are not usable for encryption
if fields[11] !~? 'e'
continue
endif
let pubseen = 1
endif
else " search for the next uid
if (fields[0] == "uid")
let pubseen = 0
if exists("*strftime")
let uid = fields[9] . s:GPGMagicString . "(ID: 0x" . a:identity . " created at " . strftime("%c", fields[5]) . ")"
else
let uid = fields[9] . s:GPGMagicString . "(ID: 0x" . a:identity . ")"
endif
break
endif
endif
endfor
call s:GPGDebug(3, "<<<<<<<< Leaving s:GPGIDToName()")
return uid
endfunction
function s:GPGPreCmd()
let &shellredir = s:shellredir
let &shell = s:shell
let &shelltemp = s:shelltemp
endfunction
function s:GPGPostCmd()
let &shellredir = s:shellredirsave
let &shell = s:shellsave
let &shelltemp = s:shelltempsave
endfunction
" Function: s:GPGSystem(dict) {{{2
"
" run g:GPGCommand using system(), logging the commandline and output
" Recognized keys are:
" level - Debug level at which the commandline and output will be logged
" args - Arguments to be given to g:GPGCommand
"
" Returns: command output
"
function s:GPGSystem(dict)
let commandline = printf('%s %s', s:GPGCommand, a:dict.args)
if (!empty(g:GPGHomedir))
let commandline .= ' --homedir ' . shellescape(g:GPGHomedir)
endif
let commandline .= ' ' . s:stderrredirnull
call s:GPGDebug(a:dict.level, "command: ". commandline)
call s:GPGPreCmd()
let output = system(commandline)
call s:GPGPostCmd()
call s:GPGDebug(a:dict.level, "output: ". output)
return output
endfunction
" Function: s:GPGExecute(dict) {{{2
"
" run g:GPGCommand using :execute, logging the commandline
" Recognized keys are:
" level - Debug level at which the commandline will be logged
" args - Arguments to be given to g:GPGCommand
" ex - Ex command which will be :executed
" redirect - Shell redirect to use, if needed
"
function s:GPGExecute(dict)
let commandline = printf('%s%s %s', a:dict.ex, s:GPGCommand, a:dict.args)
if (!empty(g:GPGHomedir))
let commandline .= ' --homedir ' . shellescape(g:GPGHomedir, 1)
endif
if (has_key(a:dict, 'redirect'))
let commandline .= ' ' . a:dict.redirect
endif
let commandline .= ' ' . s:stderrredirnull
call s:GPGDebug(a:dict.level, "command: " . commandline)
call s:GPGPreCmd()
execute commandline
call s:GPGPostCmd()
endfunction
" Function: s:GPGDebug(level, text) {{{2
"
" output debug message, if this message has high enough importance
" only define function if GPGDebugLevel set at all
"
function s:GPGDebug(level, text)
if exists("g:GPGDebugLevel") && g:GPGDebugLevel >= a:level
if exists("g:GPGDebugLog")
execute "redir >> " . g:GPGDebugLog
silent echom "GnuPG: " . a:text
redir END
else
echom "GnuPG: " . a:text
endif
endif
endfunction
" Section: Commands {{{1
command! GPGViewRecipients call s:GPGViewRecipients()
command! GPGEditRecipients call s:GPGEditRecipients()
command! GPGViewOptions call s:GPGViewOptions()
command! GPGEditOptions call s:GPGEditOptions()
" Section: Menu {{{1
if (has("menu"))
amenu <silent> Plugin.GnuPG.View\ Recipients :GPGViewRecipients<CR>
amenu <silent> Plugin.GnuPG.Edit\ Recipients :GPGEditRecipients<CR>
amenu <silent> Plugin.GnuPG.View\ Options :GPGViewOptions<CR>
amenu <silent> Plugin.GnuPG.Edit\ Options :GPGEditOptions<CR>
endif
" vim600: set foldmethod=marker foldlevel=0 :
|