2 # our .zprofile can be expensive, so we keep track of what has been run
3 # already, and only set up what is necessary. additionally, we want to ensure
4 # that our environment is set up as early as possible, so we also source
5 # .zprofile in .zshenv for new non-login shells.
7 # these issues are handled by using these methods:
8 # * the parent shell that starts the user's session after logging in to some
9 # graphical environments may not be a login shell—due to misconfiguration
10 # or otherwise—which means .zprofile is not ran and the environment is not
11 # properly configured for any child processes.
12 # * some desktop environments/graphical terminal emulators will start new
13 # terminal windows with login shells, which runs .zprofile every time and
14 # leads to noticably slow startup times if we have not already ran it.
17 # XXX: only call after relevant vars have been set up, defined early so that
18 # below code can utilize it after they do so
19 function _sev_zcleanup {
21 if [[ -d $_sev_gpg_forward_dir && ( -z $1 || $1 == 'gpg-forward' ) ]] {
22 # clean up forward dirs if its session is dead or we ask for it
23 find $_sev_gpg_forward_dir -mindepth 1 -maxdepth 1 -type d |
25 # NOTE: the only way we can get here is if we have not been
26 # forwarded before, if the user asks for it, or during
27 # logout. if our own pid already has a dir, it is most likely
28 # stale, the user wants it removed, or something is very
29 # broken—in all 3 of these cases the best choice is remove it.
31 if {[[ -v _sev_gpg_forward_clean || $$ == $p ]] ||
32 ! kill -0 $p 2>/dev/null} {
33 find $x -mindepth 1 -maxdepth 1 | while {read -r y} {
34 # XXX: real dirs will stop unlink, consider it a feature
37 # don't force in case something important is still there
41 # reset GNUPGHOME if we removed our own dir
42 if [[ $GNUPGHOME =~ '/.ssh_forward/\d+/*$' && ! -e $GNUPGHOME ]]
43 GNUPGHOME=${GNUPGHOME%$MATCH}
47 # NOTE: _sev_tmp is not unset so session dirs will not be recreated
48 # NOTE: XDG dirs that use our tmp are not unset here, they are in zlogout
49 if [[ -d $_sev_tmp && ( -z $1 || $1 == 'tmp' ) ]] {
50 # clean up tmp dirs if its session is dead or we ask for it
51 find $_sev_tmp -mindepth 1 -maxdepth 1 -name '.session.*' -type d |
53 # NOTE: same rationale as above
54 p=${$(basename $x)#.session.}
55 if {[[ -v _sev_tmp_clean || $$ == $p ]] ||
56 ! kill -0 $p 2>/dev/null} {
66 export CHARSET=${CHARSET:-UTF-8}
67 export LANG=${LANG:-en_US.UTF-8}
70 # NOTE: we utilize the fact that unique arrays keep the first occurrence and
71 # remove any further occurences to capture elements from the old PATH
72 # that we did not anticipate and shift them to the front, since they are
73 # probably important to the system
74 if [[ ! -v _sev_setup_path || -o login ]] {
76 # add as many generic paths as possible to keep the order we want
77 # NOTE: /usr/{local,pkg,games} are unix/bsdisms
78 # XXX: PREFIX not validated, non-posix but Termux uses it, maybe others
79 # XXX: XDG specifies ~/.local/bin as the only user-writable dir for
80 # executables, but we specify more; technically this is against spec
82 path=({{${_sev_home:-~},~}{/.local,},{$PREFIX,}{,/opt,/usr{,/local,/pkg}}}/{s,}bin
83 /usr/{X11R{7,6}/bin,games})
85 path=("$path[@]" "$syspath[@]")
86 # remove nonexistent and duplicate paths
87 for (( i = 1; i <= $#path; i++ )) {
88 if [[ ! -e $path[$i] ]] {
90 ((i <= len)) && ((len--))
95 # shift valid system paths to the front if there are any left
96 ((len > 0 && len < $#path)) && path=("${(@)path[len + 1, -1]}" "${(@)path[1, len]}")
98 # include our zsh dir in fpath. unlike above, we always prefer our paths
99 fpath=(${ZDOTDIR:-~/.zsh}/functions/{*,Completions/*}(N) "$fpath[@]")
100 # FPATH is not exported by default
102 typeset +U path fpath
103 export _sev_setup_path=
107 # NOTE: need this for tmp, so confirm it exists.
108 # XXX: perms are not specified for XDG dirs except runtime, but I think 760
109 # makes the most sense. shouldn't break anything since no one else should
110 # be poking around in our dir.
111 [[ -e ${_sev_home:-~}/.local ]] || mkdir -m760 ${_sev_home:-~}/.local
114 # NOTE: specs say that POSIX tmp and XDG runtime directories should exist
115 # until the last session is logged out (POSIX can exist for longer).
116 # since we can't reliably keep track of sessions in a cross-platform
117 # manner, the current implementation should use a separate directory per
118 # toplevel session (i.e. SHLVL=1). this should placate most applications,
119 # though it is not expressly spec compliant.
120 if [[ ! -v _sev_tmp ]] {
121 _sev_tmp=${_sev_home:-~}/.local/tmp
122 # NOTE: race condition/remove in use files
123 [[ -h $_sev_tmp ]] && unlink $_sev_tmp 2>/dev/null
124 t=${TMPDIR:-${TEMP:-${TMP:-/tmp}}}/.home-$LOGNAME
125 # create personal tmp dir under system tmp
126 [[ -e $t ]] || mkdir -m700 $t 2>/dev/null
128 [[ -o interactive ]] &&
129 print -P "%F{orange}*** Can't create TMPDIR $t, using $_sev_tmp%f"
130 # fallback bare directory
131 [[ -e $_sev_tmp ]] || mkdir -m700 $_sev_tmp 2>/dev/null
132 if [[ ! -d $_sev_tmp ]] {
133 [[ -o interactive ]] &&
134 print -P "%F{red}!!! No usable TMPDIR%f"
139 } elif [[ -e $_sev_tmp ]] {
140 [[ -o interactive ]] &&
141 print -P "%F{orange}*** $_sev_tmp occluded, can't link to TMPDIR $t%f"
144 ln -s $t $_sev_tmp 2>/dev/null
146 if [[ -v _sev_tmp ]] {
147 # ensure dir is clean
149 # finally create our subdir for this session
150 t=$_sev_tmp/.session.$$
151 if ! mkdir -m700 $t 2>/dev/null; then
152 [[ -o interactive ]] &&
153 print -P "%F{red}!!! Can't create session subdir $t, using $_sev_tmp%f"
156 export _sev_tmp TMPDIR=$t TEMP=$t TMP=$t
162 if [[ ! -v _sev_setup_xdg ]] {
163 ## merge with any existing dirs and remove duplicates using unique arrays
164 # NOTE: we are accepting whatever value might be set for CONFIG and DATA;
165 # if it wasn't set, we just use default and leave it unset
166 # NOTE: include and then remove CONFIG_HOME and DATA_HOME to ensure they
167 # are not present in the array if it was added before we got to it
168 typeset -UT XDG_DATA_DIRS xdg_data_dirs
169 if [[ -v XDG_DATA_HOME ]] {
171 } elif [[ ! -e ~/.local/share ]] {
172 mkdir -m760 ~/.local/share
174 xdg_data_dirs=($XDG_DATA_HOME /{opt,usr/local,usr/pkg,usr}/share
175 "${XDG_DATA_DIRS:+${xdg_data_dirs[@]}}")
176 # XXX: if colons are not escaped, could remove unintended part of string
177 export XDG_DATA_DIRS=${XDG_DATA_DIRS#$XDG_DATA_HOME:}
179 typeset -UT XDG_CONFIG_DIRS xdg_config_dirs
180 if [[ -v XDG_CONFIG_HOME ]] {
181 export XDG_CONFIG_HOME
182 } elif [[ ! -e ~/.config ]] {
183 mkdir -m760 ~/.config
185 # I am of the belief .local should follow FHS /usr/local...
186 [[ -e ~/.local/etc ]] || ln -s ~/.config ~/.local/etc
187 xdg_config_dirs=($XDG_CONFIG_HOME ${XDG_CONFIG_DIRS:+"$xdg_config_dirs[@]"}
188 {/opt,/usr/local,/usr/pkg,}/etc/xdg)
189 # XXX: if colons are not escaped, could remove unintended part of string
190 export XDG_CONFIG_DIRS=${XDG_CONFIG_DIRS#$XDG_CONFIG_HOME:}
192 if [[ -v XDG_STATE_HOME ]] {
193 export XDG_STATE_HOME
194 } elif [[ ! -e ~/.local/state ]] {
195 mkdir -m760 ~/.local/state
198 if [[ ! -v XDG_CACHE_HOME ]] {
199 if [[ -v _sev_tmp ]] {
200 export XDG_CACHE_HOME=$_sev_tmp/.xdg.cache
201 [[ -e $XDG_CACHE_HOME ]] || mkdir -m700 $XDG_CACHE_HOME
202 } elif [[ ! -e ~/.cache ]] {
207 if [[ -v XDG_RUNTIME_DIR ]] {
208 export XDG_RUNTIME_DIR
210 # make runtime dir in our session-specific tmpdir
211 export XDG_RUNTIME_DIR=$TMPDIR/.xdg.runtime
212 # same as in tmpdir creation, ensure dir doesn't exist
213 if [[ -h $XDG_RUNTIME_DIR ]] {
214 unlink $XDG_RUNTIME_DIR 2>/dev/null
215 } elif [[ -e $XDG_RUNTIME_DIR ]] {
216 rm -rf $XDG_RUNTIME_DIR 2>/dev/null
218 mkdir -m700 $XDG_RUNTIME_DIR 2>/dev/null
221 # source user dirs after other vars
222 [[ -e $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
223 emulate sh -c "source $XDG_CONFIG_HOME/user-dirs.dirs"
224 export _sev_setup_xdg=
228 if [[ ! -v DBUS_SESSION_BUS_ADDRESS && -v commands[dbus-launch] ]] {
230 export DBUS_SESSION_BUS_ADDRESS DBUS_SESSION_BUS_PID
234 if [[ ! -v GNUPGHOME ]] {
235 export GNUPGHOME=${XDG_CONFIG_HOME:-~/.config}/gnupg
236 if [[ -d ~/.gnupg ]] {
237 mv ~/.gnupg ${XDG_CONFIG_HOME:-~/.config}/gnupg
241 ### gpg agent + forwarding
242 # NOTE: while ssh manages its auth sock in its protocol when ForwardSsh is
243 # enabled, GPG must be forwarded manually over Unix socket. to support
244 # this, we forward the restricted gpg-agent extra socket to the remote
245 # host with a RemoteForward rule in ~/.ssh/config that uses the
246 # _GNUPG_SOCK_* env vars. to avoid conflicts with other ssh sessions
247 # where the same user is connecting to the same host from different
248 # machines, gpg in each environment should utilize its own forwarded
249 # socket, rather than replace the sockets in GNUPGHOME which will be
250 # overridden on the next connection. previously, you could provide a path
251 # to the agent socket in GPG_AGENT_INFO, but that was deprecated in GPG
252 # v2.1. instead, we must clone GNUPGHOME with links and replace the agent
253 # sockets there with the forwarded one.
254 # NOTE: since Unix sockets are not supported under Windows, this will not work
255 # under msys, cygwin, mingw, etc., but may work under wsl2.
256 # HACK: without SendEnv, which is disabled by default in most sshd configs,
257 # there is no foolproof way to prevent race conditions via filename
258 # collisions or to pass the desired forward path to the remote host
259 # environment. we just have to guess the path we choose is good on the
260 # desination, and assume the newest matching socket is the correct one
261 # after connecting. in theory, we could occlude the ssh binary on PATH
262 # with an alias or script that would allow us to communicate with the
263 # remote host before opening a shell, so that we can have the host
264 # communicate back to the client where it wants a socket created or ask
265 # the host if the path the client wants to use is writable. however, this
266 # would open up too many edge cases where it wouldn't work or be too
267 # clunky (e.g. asking for password twice) to make it worth it.
268 function _gpg_socketpath {
269 # dirs are percent-encoded: https://stackoverflow.com/a/64312099
270 echo ${1//(#b)%([[:xdigit:]](#c2))/${(#):-0x$match[1]}}
272 if [[ ! -v _sev_setup_gpg_forward && -v commands[gpg] ]] {
273 # XXX: assuming /tmo exists and is writable on destination
274 export _GNUPG_SOCK_DEST_BASE=/tmp/.gpg-agent-forward
275 export _GNUPG_SOCK_DEST_EXT=$(date +%s).$RANDOM
276 export _GNUPG_SOCK_DEST=$_GNUPG_SOCK_DEST_BASE.$_GNUPG_SOCK_DEST_EXT
277 export _sev_gpg_forward_dir=${GNUPGHOME:-~/.gnupg}/.ssh_forward
278 _sev_zcleanup gpg-forward
280 # find our forwarded socket
281 s=($_GNUPG_SOCK_DEST_BASE*(N=oc[1]))
282 if [[ -n $s && -v SSH_CLIENT ]] {
283 # create new forward dir
284 export _sev_setup_gpg_forward=
285 h=$_sev_gpg_forward_dir/$$
287 # XXX: is it safe to link scdaemon socket? can its name be changed?
288 for x (S.scdaemon gpg.conf gpg-agent.conf sshcontrol random_seed
289 pubring.kbx{,~} trustdb.gpg private-keys-v1.d crls.d) {
290 ln -s ${GNUPGHOME:-~/.gnupg}/$x $h
294 for x in $(gpgconf --list-dirs | grep 'agent-.*-\?socket:'); do
295 x=$(_gpg_socketpath ${x/#agent-*socket:})
297 # move forwarded socket to first valid agent socket path
298 # XXX: if tmp is on different filesystem this may not work
302 # make links to forwarded socket for any others
310 # what we will forward if we start a new ssh connection
311 # NOTE: do this after setting up GNUPGHOME to pick up new socket path;
312 # if already connected over SSH, extra should be the remote one
313 export _GNUPG_SOCK_SRC=$(_gpg_socketpath \
314 $(gpgconf --list-dirs agent-extra-socket))
315 } elif [[ ! -v _sev_setup_gpg_forward ]] {
316 # required for RemoteForward to not error out if the vars are unset
317 [[ ! -v _GNUPG_SOCK_SRC ]] && export _GNUPG_SOCK_SRC=/nonexistent
318 [[ ! -v _GNUPG_SOCK_DEST ]] && export _GNUPG_SOCK_DEST=/nonexistent
322 if [[ -v commands[gpg-connect-agent] &&
323 ( ! -v _sev_setup_gpgagent || -v _sev_refresh_gpgagent ) ]] {
324 # avoid printing if we have already set up tty before
325 [[ ! -v _sev_setup_gpgagent && -o interactive ]] && p=true || p=false
327 print -nP '%F{blue}>>>%f GPG: '
328 if [[ -v _sev_setup_gpg_forward ]] {
329 print -nP '%F{yellow}Forwarded agent '
331 print -nP '%F{green}Agent '
334 gpg-connect-agent /bye >/dev/null 2>&1
336 $p && print -P '%F{red}communication error'
338 if [[ ! -v _sev_setup_gpg_forward ]] {
339 if [[ ${+GPG_TTY} -eq 0 && -o interactive ]]
340 export GPG_TTY=$(tty)
341 if [[ ( -v DISPLAY || -v WAYLAND_DISPLAY ) &&
342 ${PINENTRY_USER_DATA/USE_TTY=0} == $PINENTRY_USER_DATA ]]
343 export PINENTRY_USER_DATA=USE_TTY=$((
344 ${+DISPLAY} + ${+WAYLAND_DISPLAY} == 0))
345 # XXX: don't know if gpg-agent supports comments after directives
346 # XXX: path could have #
347 # XXX: we are assuming this is our pinentry from .local/bin
348 sed -Ei 's#^([[:space:]]*pinentry-program[[:space:]]).*$#\1'${commands[pinentry]:-/dev/null}'#' \
349 ${GNUPGHOME:-~/.gnupg}/gpg-agent.conf 2>/dev/null
350 # XXX: could check for changes before doing this to save perf
351 gpg-connect-agent RELOADAGENT UPDATESTARTUPTTY /bye >/dev/null 2>&1
353 gpg-connect-agent /subst /serverpid \
354 "/echo pid \${get serverpid} on $GPG_TTY" /bye 2>/dev/null
360 export _sev_setup_gpgagent=
362 unset p _sev_refresh_gpgagent
366 if [[ ! -v _sev_setup_ssh ]] {
367 # NOTE: preferred order of agents to check: okcagent, gnupg, openssh
368 # first block takes care of okcagent and openssh, second gnupg
369 # XXX: doesn't actually check if ssh is enabled in gpg
370 [[ -o interactive ]] && print -nP '%F{blue}>>>%f SSH: %F{green}'
371 if [[ ! -v SSH_AUTH_SOCK && ( -v commands[okc-ssh-agent] ||
372 ( -v commands[ssh-agent] && ! -v commands[gpg] ) ) ]] {
373 okc=${commands[okc-ssh-agent]:+okc-}
374 e=$_sev_tmp/${okc}ssh-agent-exports
378 IFS=$'\0' read -r sock pid <$e
380 if [[ -S $sock && $pid > 0 ]] && kill -0 $pid; then
381 [[ -o interactive ]] && print -P "Reusing agent PID $pid%f"
382 export SSH_AUTH_SOCK=$sock
383 export SSH_AGENT_PID=$pid
385 # TODO: ensure ssh-agent path looks legit to avoid unsafe eval?
386 # XXX: doesn't appear to be any other way to handle redirection.
387 # because eval needs to write to current scope environment
388 # subshells can't be used to capture output and print.
389 c='TMPDIR=$_sev_tmp ${okc}ssh-agent'
390 if [[ -o interactive ]] {
394 eval $(eval $=c) >/dev/null 2>&1
396 echo -n $SSH_AUTH_SOCK$'\0'$SSH_AGENT_PID >!$e
400 } elif [[ ! -v SSH_AUTH_SOCK && -v commands[gpg] ]] {
401 # since gpg should have been started above, just export and notify
402 if [[ -o interactive ]] {
403 if [[ -v _sev_setup_gpg_forward ]] {
404 echo 'Forwarded GPG agent'
406 gpg-connect-agent /subst /serverpid \
407 '/echo GPG agent pid ${get serverpid}' /bye
411 export SSH_AUTH_SOCK=$(_gpg_socketpath \
412 $(gpgconf --list-dirs agent-ssh-socket))
413 } elif [[ -v SSH_AUTH_SOCK ]] {
414 [[ -o interactive ]] && print -P 'Preconfigured agent%f'
416 [[ -o interactive ]] && print -P '%F{red}No agent available%f'
419 export _sev_setup_ssh=
421 unfunction _gpg_socketpath
424 [[ -v commands[perl] && -d $XDG_DATA_HOME/perl5/lib/perl5 &&
425 ! -v PERL_LOCAL_LIB_ROOT ]] &&
426 eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5 \
427 -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
430 ### load site-specific
431 if [[ -f ${ZDOTDIR:-~}/.zprofile.local ]] { source ${ZDOTDIR:-~}/.zprofile.local }