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.
15 # * switching users without wiping the environment will result in paths and
16 # variables intended for the old user being used for the new user. while
17 # this may be considered an edge-case that should not be supported, there
18 # are legitimate reasons to want to do this, and in any case the shell
19 # should not choke or cause unexpected problems should it happen anyway.
22 # XXX: only call after relevant vars have been set up, defined early so that
23 # below code can utilize it after they do so
24 function _sev_zcleanup {
26 if [[ -d $_sev_gpg_forward_dir && ( -z $1 || $1 == 'gpg-forward' ) ]] {
27 # clean up forward dirs if its session is dead or we ask for it
28 find $_sev_gpg_forward_dir -mindepth 1 -maxdepth 1 -type d |
30 # NOTE: the only way we can get here is if we have not been
31 # forwarded before, if the user asks for it, or during
32 # logout. if our own pid already has a dir, it is most likely
33 # stale, the user wants it removed, or something is very
34 # broken—in all 3 of these cases the best choice is remove it.
36 if {[[ -v _sev_gpg_forward_clean || $$ == $p ]] ||
37 ! kill -0 $p 2>/dev/null} {
38 find $x -mindepth 1 -maxdepth 1 | while {read -r y} {
39 # XXX: real dirs will stop unlink, consider it a feature
42 # don't force in case something important is still there
46 # reset GNUPGHOME if we removed our own dir
47 if [[ $GNUPGHOME =~ '/.ssh_forward/\d+/*$' && ! -e $GNUPGHOME ]]
48 GNUPGHOME=${GNUPGHOME%$MATCH}
52 # NOTE: _sev_tmp is not unset so session dirs will not be recreated
53 # NOTE: XDG dirs that use our tmp are not unset here, they are in zlogout
54 if [[ -d $_sev_tmp && ( -z $1 || $1 == 'tmp' ) ]] {
55 # clean up tmp dirs if its session is dead or we ask for it
56 find $_sev_tmp -mindepth 1 -maxdepth 1 -name '.session.*' -type d |
58 # NOTE: same rationale as above
59 p=${$(basename $x)#.session.}
60 if {[[ -v _sev_tmp_clean || $$ == $p ]] ||
61 ! kill -0 $p 2>/dev/null} {
71 export CHARSET=${CHARSET:-UTF-8}
72 export LANG=${LANG:-en_US.UTF-8}
75 # NOTE: we utilize the fact that unique arrays keep the first occurrence and
76 # remove any further occurences to capture elements from the old PATH
77 # that we did not anticipate and shift them to the front, since they are
78 # probably important to the system
79 if [[ ! -v _sev_setup_path || -o login ]] {
81 # add as many generic paths as possible to keep the order we want
82 # NOTE: /usr/{local,pkg,games} are unix/bsdisms
83 # XXX: PREFIX not validated, non-posix but Termux uses it, maybe others
84 # XXX: XDG specifies ~/.local/bin as the only user-writable dir for
85 # executables, but we specify more; technically this is against spec
87 path=(~/{.local/,}{s,}bin
88 {~/.local,{$PREFIX,}{,/opt,/usr{,/local,pkg}}}/sbin
89 {~/.local,{$PREFIX,}{,/opt,/usr{,/local,pkg}}}/bin
90 /usr/{X11R{7,6}/bin,games})
92 path=("$path[@]" "$syspath[@]")
93 # remove nonexistent and duplicate paths
94 for (( i = 1; i <= $#path; i++ )) {
95 if [[ ! -e $path[$i] ]] {
97 ((i <= len)) && ((len--))
102 # shift valid system paths to the front if there are any left
103 ((len > 0 && len < $#path)) && path=("${(@)path[len + 1, -1]}" "${(@)path[1, len]}")
105 # include our zsh dir in fpath. unlike above, we always prefer our paths
106 fpath=(${ZDOTDIR:-~/.zsh}/functions/{*,Completions/*}(N) "$fpath[@]")
107 # FPATH is not exported by default
109 typeset +U path fpath
110 export _sev_setup_path=
114 # NOTE: need this for tmp, so confirm it exists.
115 # XXX: perms are not specified for XDG dirs except runtime, but I think 760
116 # makes the most sense. shouldn't break anything since no one else should
117 # be poking around in our dir.
118 [[ -e ~/.local ]] || mkdir -m760 ~/.local
121 # NOTE: specs say that POSIX tmp and XDG runtime directories should exist
122 # until the last session is logged out (POSIX can exist for longer).
123 # since we can't reliably keep track of sessions in a cross-platform
124 # manner, the current implementation should use a separate directory per
125 # toplevel session (i.e. SHLVL=1). this should placate most applications,
126 # though it is not expressly spec compliant.
127 if [[ ! -v _sev_tmp ]] {
128 _sev_tmp=~/.local/tmp
129 # NOTE: race condition/remove in use files
130 [[ -h $_sev_tmp ]] && unlink $_sev_tmp 2>/dev/null
131 t=${TMPDIR:-${TEMP:-${TMP:-/tmp}}}/.home-$LOGNAME
132 # create personal tmp dir under system tmp
133 [[ -e $t ]] || mkdir -m700 $t 2>/dev/null
135 [[ -o interactive ]] &&
136 print -P "%F{orange}*** Can't create TMPDIR $t, using $_sev_tmp%f"
137 # fallback bare directory
138 [[ -e $_sev_tmp ]] || mkdir -m700 $_sev_tmp 2>/dev/null
139 if [[ ! -d $_sev_tmp ]] {
140 [[ -o interactive ]] &&
141 print -P "%F{red}!!! No usable TMPDIR%f"
146 } elif [[ -e $_sev_tmp ]] {
147 [[ -o interactive ]] &&
148 print -P "%F{orange}*** $_sev_tmp occluded, can't link to TMPDIR $t%f"
151 ln -s $t $_sev_tmp 2>/dev/null
153 if [[ -v _sev_tmp ]] {
154 # ensure dir is clean
156 # finally create our subdir for this session
157 t=$_sev_tmp/.session.$$
158 if ! mkdir -m700 $t 2>/dev/null; then
159 [[ -o interactive ]] &&
160 print -P "%F{red}!!! Can't create session subdir $t, using $_sev_tmp%f"
163 export _sev_tmp TMPDIR=$t TEMP=$t TMP=$t
169 if [[ ! -v _sev_setup_xdg ]] {
170 ## merge with any existing dirs and remove duplicates using unique arrays
171 # NOTE: we are accepting whatever value might be set for CONFIG and DATA;
172 # if it wasn't set, we just use default and leave it unset
173 # NOTE: include and then remove CONFIG_HOME and DATA_HOME to ensure they
174 # are not present in the array if it was added before we got to it
175 typeset -UT XDG_DATA_DIRS xdg_data_dirs
176 if [[ -v XDG_DATA_HOME ]] {
178 } elif [[ ! -e ~/.local/share ]] {
179 mkdir -m760 ~/.local/share
181 xdg_data_dirs=($XDG_DATA_HOME /{opt,usr/local,usr/pkg,usr}/share
182 "${XDG_DATA_DIRS:+${xdg_data_dirs[@]}}")
183 # XXX: if colons are not escaped, could remove unintended part of string
184 export XDG_DATA_DIRS=${XDG_DATA_DIRS#$XDG_DATA_HOME:}
186 typeset -UT XDG_CONFIG_DIRS xdg_config_dirs
187 if [[ -v XDG_CONFIG_HOME ]] {
188 export XDG_CONFIG_HOME
189 } elif [[ ! -e ~/.config ]] {
190 mkdir -m760 ~/.config
192 # I am of the belief .local should follow FHS /usr/local...
193 [[ -e ~/.local/etc ]] || ln -s ~/.config ~/.local/etc
194 xdg_config_dirs=($XDG_CONFIG_HOME ${XDG_CONFIG_DIRS:+"$xdg_config_dirs[@]"}
195 {/opt,/usr/local,/usr/pkg,}/etc/xdg)
196 # XXX: if colons are not escaped, could remove unintended part of string
197 export XDG_CONFIG_DIRS=${XDG_CONFIG_DIRS#$XDG_CONFIG_HOME:}
199 if [[ -v XDG_STATE_HOME ]] {
200 export XDG_STATE_HOME
201 } elif [[ ! -e ~/.local/state ]] {
202 mkdir -m760 ~/.local/state
205 if [[ ! -v XDG_CACHE_HOME ]] {
206 if [[ -v _sev_tmp ]] {
207 export XDG_CACHE_HOME=$_sev_tmp/.xdg.cache
208 [[ -e $XDG_CACHE_HOME ]] || mkdir -m700 $XDG_CACHE_HOME
209 } elif [[ ! -e ~/.cache ]] {
214 # make runtime dir in our session-specific tmpdir
215 export XDG_RUNTIME_DIR=$TMPDIR/.xdg.runtime
216 # same as in tmpdir creation, ensure dir doesn't exist
217 if [[ -h $XDG_RUNTIME_DIR ]] {
218 unlink $XDG_RUNTIME_DIR 2>/dev/null
219 } elif [[ -e $XDG_RUNTIME_DIR ]] {
220 rm -rf $XDG_RUNTIME_DIR 2>/dev/null
222 mkdir -m700 $XDG_RUNTIME_DIR 2>/dev/null
224 # source user dirs after other vars
225 [[ -e $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
226 emulate sh -c "source $XDG_CONFIG_HOME/user-dirs.dirs"
227 export _sev_setup_xdg=
231 if [[ ! -v DBUS_SESSION_BUS_ADDRESS && -v commands[dbus-launch] ]] {
233 export DBUS_SESSION_BUS_ADDRESS DBUS_SESSION_BUS_PID
237 if [[ ! -v GNUPGHOME ]] {
238 export GNUPGHOME=${XDG_CONFIG_HOME:-~/.config}/gnupg
239 if [[ -d ~/.gnupg ]] {
240 mv ~/.gnupg ${XDG_CONFIG_HOME:-~/.config}/gnupg
244 ### gpg agent + forwarding
245 # NOTE: while ssh manages its auth sock in its protocol when ForwardSsh is
246 # enabled, GPG must be forwarded manually over Unix socket. to support
247 # this, we forward the restricted gpg-agent extra socket to the remote
248 # host with a RemoteForward rule in ~/.ssh/config that uses the
249 # _GNUPG_SOCK_* env vars. to avoid conflicts with other ssh sessions
250 # where the same user is connecting to the same host from different
251 # machines, gpg in each environment should utilize its own forwarded
252 # socket, rather than replace the sockets in GNUPGHOME which will be
253 # overridden on the next connection. previously, you could provide a path
254 # to the agent socket in GPG_AGENT_INFO, but that was deprecated in GPG
255 # v2.1. instead, we must clone GNUPGHOME with links and replace the agent
256 # sockets there with the forwarded one.
257 # NOTE: since Unix sockets are not supported under Windows, this will not work
258 # under msys, cygwin, mingw, etc., but may work under wsl2.
259 # HACK: without SendEnv, which is disabled by default in most sshd configs,
260 # there is no foolproof way to prevent race conditions via filename
261 # collisions or to pass the desired forward path to the remote host
262 # environment. we just have to guess the path we choose is good on the
263 # desination, and assume the newest matching socket is the correct one
264 # after connecting. in theory, we could occlude the ssh binary on PATH
265 # with an alias or script that would allow us to communicate with the
266 # remote host before opening a shell, so that we can have the host
267 # communicate back to the client where it wants a socket created or ask
268 # the host if the path the client wants to use is writable. however, this
269 # would open up too many edge cases where it wouldn't work or be too
270 # clunky (e.g. asking for password twice) to make it worth it.
271 function _gpg_socketpath {
272 # dirs are percent-encoded: https://stackoverflow.com/a/64312099
273 echo ${1//(#b)%([[:xdigit:]](#c2))/${(#):-0x$match[1]}}
275 if [[ ! -v _sev_setup_gpg_forward && -v commands[gpg] ]] {
276 # XXX: assuming /tmo exists and is writable on destination
277 export _GNUPG_SOCK_DEST_BASE=/tmp/.gpg-agent-forward
278 export _GNUPG_SOCK_DEST_EXT=$(date +%s).$RANDOM
279 export _GNUPG_SOCK_DEST=$_GNUPG_SOCK_DEST_BASE.$_GNUPG_SOCK_DEST_EXT
280 export _sev_gpg_forward_dir=${GNUPGHOME:-~/.gnupg}/.ssh_forward
281 _sev_zcleanup gpg-forward
283 # find our forwarded socket
284 s=($_GNUPG_SOCK_DEST_BASE*(N=oc[1]))
285 if [[ -n $s && -v SSH_CLIENT ]] {
286 # create new forward dir
287 export _sev_setup_gpg_forward=
288 h=$_sev_gpg_forward_dir/$$
290 # XXX: is it safe to link scdaemon socket? can its name be changed?
291 for x (S.scdaemon gpg.conf gpg-agent.conf sshcontrol random_seed
292 pubring.kbx{,~} trustdb.gpg private-keys-v1.d crls.d) {
293 ln -s ${GNUPGHOME:-~/.gnupg}/$x $h
297 for x in $(gpgconf --list-dirs | grep 'agent-.*-\?socket:'); do
298 x=$(_gpg_socketpath ${x/#agent-*socket:})
300 # move forwarded socket to first valid agent socket path
301 # XXX: if tmp is on different filesystem this may not work
305 # make links to forwarded socket for any others
313 # what we will forward if we start a new ssh connection
314 # NOTE: do this after setting up GNUPGHOME to pick up new socket path;
315 # if already connected over SSH, extra should be the remote one
316 export _GNUPG_SOCK_SRC=$(_gpg_socketpath \
317 $(gpgconf --list-dirs agent-extra-socket))
318 } elif [[ ! -v _sev_setup_gpg_forward ]] {
319 # required for RemoteForward to not error out if the vars are unset
320 [[ ! -v _GNUPG_SOCK_SRC ]] && export _GNUPG_SOCK_SRC=/nonexistent
321 [[ ! -v _GNUPG_SOCK_DEST ]] && export _GNUPG_SOCK_DEST=/nonexistent
325 if [[ -v commands[gpg-connect-agent] &&
326 ( ! -v _sev_setup_gpgagent || -v _sev_refresh_gpgagent ) ]] {
327 # avoid printing if we have already set up tty before
328 [[ ! -v _sev_setup_gpgagent && -o interactive ]] && p=true || p=false
330 print -nP '%F{blue}>>>%f GPG: '
331 if [[ -v _sev_setup_gpg_forward ]] {
332 print -nP '%F{yellow}Forwarded agent '
334 print -nP '%F{green}Agent '
337 gpg-connect-agent /bye >/dev/null 2>&1
339 $p && print -P '%F{red}communication error'
341 if [[ ! -v _sev_setup_gpg_forward ]] {
342 if [[ ${+GPG_TTY} -eq 0 && -o interactive ]]
343 export GPG_TTY=$(tty)
344 if [[ ( -v DISPLAY || -v WAYLAND_DISPLAY ) &&
345 ${PINENTRY_USER_DATA/USE_TTY=0} == $PINENTRY_USER_DATA ]]
346 export PINENTRY_USER_DATA=USE_TTY=$((
347 ${+DISPLAY} + ${+WAYLAND_DISPLAY} == 0))
348 # XXX: don't know if gpg-agent supports comments after directives
349 # XXX: path could have #
350 sed -Ei 's#^([[:space:]]*pinentry-program[[:space:]]).*$#\1'${commands[pinentry]:-/dev/null}'#' \
351 ${GNUPGHOME:-~/.gnupg}/gpg-agent.conf
352 # XXX: could check for changes before doing this to save perf
353 gpg-connect-agent RELOADAGENT UPDATESTARTUPTTY /bye >/dev/null 2>&1
355 gpg-connect-agent /subst /serverpid \
356 "/echo pid \${get serverpid} on $GPG_TTY" /bye 2>/dev/null
362 export _sev_setup_gpgagent=
364 unset p _sev_refresh_gpgagent
368 if [[ ! -v _sev_setup_ssh ]] {
369 # NOTE: preferred order of agents to check: okcagent, gnupg, openssh
370 # first block takes care of okcagent and openssh, second gnupg
371 # XXX: doesn't actually check if ssh is enabled in gpg
372 [[ -o interactive ]] && print -nP '%F{blue}>>>%f SSH: %F{green}'
373 if [[ ! -v SSH_AUTH_SOCK && ( -v commands[okc-ssh-agent] ||
374 ( -v commands[ssh-agent] && ! -v commands[gpg] ) ) ]] {
375 okc=${commands[okc-ssh-agent]:+okc-}
376 e=$_sev_tmp/${okc}ssh-agent-exports
380 IFS=$'\0' read -r sock pid <$e
382 if [[ -S $sock && $pid > 0 ]] && kill -0 $pid; then
383 [[ -o interactive ]] && print -P "Reusing agent PID $pid%f"
384 export SSH_AUTH_SOCK=$sock
385 export SSH_AGENT_PID=$pid
387 # TODO: ensure ssh-agent path looks legit to avoid unsafe eval?
388 # XXX: doesn't appear to be any other way to handle redirection.
389 # because eval needs to write to current scope environment
390 # subshells can't be used to capture output and print.
391 c='TMPDIR=$_sev_tmp ${okc}ssh-agent'
392 if [[ -o interactive ]] {
396 eval $(eval $=c) >/dev/null 2>&1
398 echo -n $SSH_AUTH_SOCK$'\0'$SSH_AGENT_PID >!$e
402 } elif [[ ! -v SSH_AUTH_SOCK && -v commands[gpg] ]] {
403 # since gpg should have been started above, just export and notify
404 if [[ -o interactive ]] {
405 if [[ -v _sev_setup_gpg_forward ]] {
406 echo 'Forwarded GPG agent'
408 gpg-connect-agent /subst /serverpid \
409 '/echo GPG agent pid ${get serverpid}' /bye
413 export SSH_AUTH_SOCK=$(_gpg_socketpath \
414 $(gpgconf --list-dirs agent-ssh-socket))
415 } elif [[ -v SSH_AUTH_SOCK ]] {
416 [[ -o interactive ]] && print -P 'Preconfigured agent%f'
418 [[ -o interactive ]] && print -P '%F{red}No agent available%f'
421 export _sev_setup_ssh=
423 unfunction _gpg_socketpath
426 [[ -v commands[perl] && -d $XDG_DATA_HOME/perl5/lib/perl5 &&
427 ! -v PERL_LOCAL_LIB_ROOT ]] &&
428 eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5 \
429 -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
432 ### load site-specific
433 if [[ -f ${ZDOTDIR:-~}/.zprofile.local ]] { source ${ZDOTDIR:-~}/.zprofile.local }
435 # vim: et sts=4 sw=4 ts=8 tw=79