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zsh: clean up echo usage
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8a92a2c0 1### functions
2## cleanup
3# XXX: only call after relevant vars have been set up, defined early so that
4# below code can utilize it after they do so
5function _sev_zcleanup {
6d4ce4aa 6 local x p y
7
8a92a2c0 8 # gpg forwarding
9 if [[ -d $_sev_gpg_forward_dir && ( -z $1 || $1 == 'gpg-forward' ) ]] {
10 # clean up forward dirs if its session is dead or we ask for it
11 find $_sev_gpg_forward_dir -mindepth 1 -maxdepth 1 -type d |
12 while {read -r x} {
13 # NOTE: the only way we can get here is if we have not been
14 # forwarded before, if the user asks for it, or during
15 # logout. if our own pid already has a dir, it is most likely
16 # stale, the user wants it removed, or something is very
17 # broken—in all 3 of these cases the best choice is remove it.
18 p=$(basename $x)
19 if {[[ -v _sev_gpg_forward_clean || $$ == $p ]] ||
20 ! kill -0 $p 2>/dev/null} {
21 find $x -mindepth 1 -maxdepth 1 | while {read -r y} {
22 # XXX: real dirs will stop unlink, consider it a feature
23 unlink $y
24 }
25 # don't force in case something important is still there
26 rmdir $x
27 }
28 }
29 # reset GNUPGHOME if we removed our own dir
6d4ce4aa 30 if [[ $GNUPGHOME =~ '/.ssh_forward/\d+/*$' && ! -d $GNUPGHOME ]]
8a92a2c0 31 GNUPGHOME=${GNUPGHOME%$MATCH}
32 }
b31a3fb1 33
8a92a2c0 34 # custom tmp
35 # NOTE: _sev_tmp is not unset so session dirs will not be recreated if
36 # called during runtime; unset _sev_tmp and re-source to fix
37 # NOTE: XDG dirs that use our tmp are not unset here, they are in zlogout
38 # after this function is called
39 if [[ -d $_sev_tmp && ( -z $1 || $1 == 'tmp' ) ]] {
40 # clean up tmp dirs if its session is dead or we ask for it
41 find $_sev_tmp -mindepth 1 -maxdepth 1 -name '.session.*' -type d |
42 while {read -r x} {
43 # NOTE: same rationale as above
44 p=${$(basename $x)#.session.}
45 if {[[ -v _sev_tmp_clean || $$ == $p ]] ||
46 ! kill -0 $p 2>/dev/null} {
47 rm -rf $x
48 }
49 }
b31a3fb1 50 }
51}
52
8a92a2c0 53function _sev_setpath {
54 # NOTE: we utilize the fact that unique arrays keep the first occurrence and
55 # remove any further occurences to capture elements from the old PATH
56 # that we did not anticipate and shift them to the front, since they are
57 # probably important to the system
6d4ce4aa 58 # NOTE: tied arrays path and fpath already exist
10d5d9ba 59 typeset -gU path fpath
b31a3fb1 60 # add as many generic paths as possible to keep the order we want
61 # NOTE: /usr/{local,pkg,games} are unix/bsdisms
62 # XXX: PREFIX not validated, non-posix but Termux uses it, maybe others
63 # XXX: XDG specifies ~/.local/bin as the only user-writable dir for
64 # executables, but we specify more; technically this is against spec
6d4ce4aa 65 local -a syspath=("$path[@]")
66 path=({{${_sev_home:-~},~}{/.local,},{$PREFIX,}{,/opt,/opt/*{/*,},/usr{,/local,/pkg}}}/{s,}bin(N)
8a92a2c0 67 {$PREFIX,}/usr/{X11R{7,6}/bin,games}
68 # emulate Arch Linux flatpak-bindir.sh for use on other systems
69 {${XDG_DATA_HOME:-~/.local/share},{$PREFIX,}/var/lib}/flatpak/exports/bin)
6d4ce4aa 70 local -i i len=$#path
b31a3fb1 71 path=("$path[@]" "$syspath[@]")
72 # remove bad paths
73 for (( i = 1; i <= $#path; i++ )) {
74 if [[ ! -d $path[$i] ]] {
75 path[$i]=()
76 ((i <= len)) && ((len--))
77 ((i--))
78 continue
79 }
80 }
81 # shift valid system paths to the front if there are any left
82 ((len > 0 && len < $#path)) && path=("${(@)path[len + 1, -1]}" "${(@)path[1, len]}")
b31a3fb1 83 # include our zsh dir in fpath. unlike above, we always prefer our paths
84 fpath=({${ZDOTDIR:-~/.zsh},{${_sev_home:-~},~}/.zsh}/functions/**/*(/N) "$fpath[@]")
8a92a2c0 85 # remove bad paths
86 for (( i = 1; i <= $#fpath; i++ )) {
87 if [[ ! -d $fpath[$i] ]] {
88 fpath[$i]=()
89 ((i--))
90 continue
91 }
92 }
b31a3fb1 93 # FPATH is not exported by default
94 export FPATH
95 typeset +U path fpath
8a92a2c0 96}
97
98### common exports
99export CHARSET=${CHARSET:-UTF-8}
100export LANG=${LANG:-en_US.UTF-8}
101
102## alternative home for pulling in bin & config, used for zsu
103[[ -v _sev_home ]] || export _sev_home=$HOME
104
105## fix broken term
294ed44e 106# NOTE: we do this here instead of .zshrc since we might print stuff
8a92a2c0 107if [[ -t 1 ]] { # only if stdout is tty
108 [[ ! -v TERM ]] && export TERM=xterm-256color >/dev/null 2>&1
109 if [[ $#terminfo -eq 0 ]] {
110 _oldterm=$TERM
111 export TERM=xterm >/dev/null 2>&1
112 [[ -o interactive ]] &&
113 print -P "%F{red}!!! Can't find terminfo for $_oldterm, using $TERM%f"
114 unset _oldterm
115 }
116}
117
118## path
119if [[ ! -v _sev_setup_path || -o login ]] {
120 _sev_setpath
121 # NOTE: do not set _sev_setup_path, it is set in zprofile
122}
123
124### home dir setup & exports
125# XXX: traditionally, zshenv should just contain exports, and not touch the
126# filesystem. however, some system profile scripts that are sourced in the
127# system zprofile may attempt to do things that rely on some of these
128# vars. for example, `flatpak-bindir.sh` in the Arch Linux flatpak package
129# references $XDG_DATA_HOME with no fallback. since we do special handling
130# for these vars before we export them, we're forced to do it all here
131# instead of zprofile.
132
133## xdg local dir
134# NOTE: need this for tmp, so confirm it exists.
135# XXX: perms are not specified for XDG dirs except runtime, but I think 760
136# makes the most sense. shouldn't break anything since no one else should
137# be poking around in our dir.
138[[ -e ~/.local ]] || mkdir -m760 ~/.local
139
140## tmp
141# NOTE: specs say that POSIX tmp and XDG runtime directories should exist
142# until the last session is logged out (POSIX can exist for longer).
143# since we can't reliably keep track of sessions in a cross-platform
144# manner, the current implementation should use a separate directory per
145# toplevel session (i.e. SHLVL=1). this should placate most applications,
146# though it is not expressly spec compliant. this may also cause problems
147# with disowned applications that still try to use the directories after
148# the toplevel shell has already logged out and the dirs removed, but the
149# chances of that are slim.
150if [[ ! -v _sev_tmp ]] {
151 # create personal TMPDIR under system tmp
7108dbef 152 t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-${${TMPPREFIX%/zsh}:-/tmp}}}}}/.home-$LOGNAME
8a92a2c0 153 [[ -e $t ]] || mkdir -m700 $t 2>/dev/null
154 _sev_tmp=~/.local/tmp
155 if [[ ! -d $t ]] {
156 # fallback TMPDIR to bare local directory or existing softlink
157 [[ -o interactive ]] &&
158 print -P "%F{orange}*** Can't create tmp dir $t, using $_sev_tmp%f"
159 [[ -h $_sev_tmp && ! -d _sev_tmp ]] && unlink $_sev_tmp 2>/dev/null
160 [[ ! -e $_sev_tmp ]] && mkdir -m700 $_sev_tmp 2>/dev/null
161 if [[ ! -d $_sev_tmp ]] {
162 _sev_tmp=${$(mktemp 2>/dev/null):/tmp}
163 [[ -o interactive ]] &&
164 print -P "%F{red}!!! Can't create tmp dir, using $_sev_tmp%f"
165 }
166 } elif [[ -f $_sev_tmp || ( -d $_sev_tmp && ! -h $_sev_tmp ) ]] {
167 # file or non-softlink directory is on our local dir
168 [[ -o interactive ]] &&
169 print -P "%F{orange}*** $_sev_tmp exists, can't link to tmp dir $t, ignoring it%f"
170 _sev_tmp=$t
171 } else {
172 # link local dir to tmp dir
173 if [[ -h $_sev_tmp && $_sev_tmp:P != $t:P ]] {
174 [[ -o interactive ]] &&
175 print -P "%F{orange}*** $_sev_tmp links to ${_sev_tmp:P} and not ${t:P}, unlinking it%f"
176 # XXX: race condition for existing sessions still using this dir
177 unlink $_sev_tmp 2>/dev/null
178 }
179 ln -s $t $_sev_tmp 2>/dev/null
180 }
181 if [[ -v _sev_tmp ]] {
182 # ensure dir is clean
183 _sev_zcleanup tmp
184 # finally create our subdir for this session
185 t=$_sev_tmp/.session.$$
186 if ! mkdir -m700 $t 2>/dev/null; then
187 [[ -o interactive ]] &&
188 print -P "%F{red}!!! Can't create session tmp subdir $t, using $_sev_tmp%f"
189 t=$_sev_tmp
190 fi
7108dbef 191 export _sev_tmp TMPDIR=$t TEMPDIR=$t TEMP=$t TMP=$t TMPPREFIX=$t/zsh
8a92a2c0 192 }
193 unset t
b31a3fb1 194}
195
8a92a2c0 196## xdg
197if [[ ! -v _sev_setup_xdg ]] {
198 ## merge with any existing dirs and remove duplicates using unique arrays
199 # NOTE: we are accepting whatever value might be set for CONFIG and DATA;
200 # if it wasn't set, we just use default and leave it unset
201 # NOTE: include and then remove CONFIG_HOME and DATA_HOME to ensure they
202 # are not present in the array if it was added before we got to it
203
204 # source user dirs before other vars; technically it is against spec to
205 # include any of the below dirs there, but you never know what crazy shit
206 # people will do. I rather handle them sanely with our own code than let
207 # them override after the fact.
208 [[ -e $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
209 emulate sh -c "source $XDG_CONFIG_HOME/user-dirs.dirs"
210
211 typeset -UT XDG_DATA_DIRS xdg_data_dirs
212 if [[ -v XDG_DATA_HOME ]] {
213 export XDG_DATA_HOME
214 } elif [[ ! -e ~/.local/share ]] {
215 mkdir -m760 ~/.local/share
216 }
217 xdg_data_dirs=($XDG_DATA_HOME /{opt,usr/local,usr/pkg,usr}/share
754df23b 218 ${XDG_DATA_DIRS:+${xdg_data_dirs%%/}})
8a92a2c0 219 export XDG_DATA_DIRS
220
221 typeset -UT XDG_CONFIG_DIRS xdg_config_dirs
222 if [[ -v XDG_CONFIG_HOME ]] {
223 export XDG_CONFIG_HOME
224 } elif [[ ! -e ~/.config ]] {
225 mkdir -m760 ~/.config
226 }
227 # I am of the belief .local should follow FHS /usr/local...
228 [[ -e ~/.local/etc ]] || ln -s ~/.config ~/.local/etc
754df23b 229 xdg_config_dirs=($XDG_CONFIG_HOME
230 ${XDG_CONFIG_DIRS:+${xdg_config_dirs%%/}}
8a92a2c0 231 {/opt,/usr/local,/usr/pkg,}/etc/xdg)
8a92a2c0 232 export XDG_CONFIG_DIRS
233
234 if [[ -v XDG_STATE_HOME ]] {
235 export XDG_STATE_HOME
236 } elif [[ ! -e ~/.local/state ]] {
237 mkdir -m760 ~/.local/state
238 }
239
240 if [[ -v XDG_CACHE_HOME ]] {
241 export XDG_CACHE_HOME
242 } else {
243 if [[ -v _sev_tmp ]] {
244 export XDG_CACHE_HOME=$_sev_tmp/.xdg.cache
245 [[ -e $XDG_CACHE_HOME ]] || mkdir -m700 $XDG_CACHE_HOME
246 } elif [[ ! -e ~/.cache ]] {
247 mkdir -m700 ~/.cache
248 }
249 }
250
251 if [[ -v XDG_RUNTIME_DIR ]] {
252 # NOTE: this can be set by systemd or other pre-shell supervisor, and
253 # if any services were started such as pipewire, we need to use
254 # the existing runtime dir so that we can get any existing
255 # program sockets or other data
256 export XDG_RUNTIME_DIR
257 } elif [[ -v TMPDIR ]] {
258 # make runtime dir in our session-specific tmpdir
259 export XDG_RUNTIME_DIR=$TMPDIR/.xdg.runtime
260 # same as in tmpdir creation, ensure dir doesn't exist
261 if [[ -h $XDG_RUNTIME_DIR ]] {
262 unlink $XDG_RUNTIME_DIR 2>/dev/null
263 } elif [[ -e $XDG_RUNTIME_DIR ]] {
264 rm -rf $XDG_RUNTIME_DIR 2>/dev/null
265 }
266 mkdir -m700 $XDG_RUNTIME_DIR 2>/dev/null
267 }
268
269 export _sev_setup_xdg=
270}
271
272### app setup & exports
273# NOTE: we set these up here since some scripts might need them
274## gpg home
275if [[ ! -v GNUPGHOME ]] {
276 export GNUPGHOME=${XDG_CONFIG_HOME:-~/.config}/gnupg
277 # move existing gnupg dir to our new home
278 if [[ -d ~/.gnupg && ! -d $GNUPGHOME ]] {
279 mv ~/.gnupg $GNUPGHOME
280 }
281}
282
283## perl local lib
284[[ ! -v PERL_LOCAL_LIB_ROOT && -v commands[perl] &&
285 -d $XDG_DATA_HOME/perl5/lib/perl5 ]] &&
286 eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5 \
287 -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
288
b31a3fb1 289### load zshenv site-specific
290autoload -Uz load-site-dotfile
291load-site-dotfile zshenv
292
8a92a2c0 293### source .zprofile early for non-login shells that should be
b31a3fb1 294if [[ ! -v _sev_first_display && ( -v DISPLAY || -v WAYLAND_DISPLAY ) ]] {
295 # most graphical login/session managers will spawn the user's shell as a
296 # parent of all child processes for that session. however, if the parent shell
297 # isn't a login shell for some reason, our .zprofile won't be run, and the
298 # environment won't be configured for child processes.
299 #
300 # XXX: .zprofile will be sourced by every new child shell if zsh is not
301 # used to start the graphical session and the _sev_first_display var
302 # isn't exported; for example, this previously happened when using
303 # sway without a display manager in front of it to run a login shell.
304 #
305 # this issue is not mitigated by .zprofile only loading what has not
306 # already been loaded if the env vars preventing the load are not set;
307 # in that case, every shell will think it is a fresh login shell.
308
309 # update gpgagent to use graphical pinentry
310 # XXX: will steal display from any other logged in graphical sessions, but
311 # I consider this to be an unlikely scenario
312 _sev_refresh_gpgagent=
313
314 export _sev_first_display=
315 [[ ! -o login ]] && source ${ZDOTDIR:-~}/.zprofile
316} elif [[ ${+TERMUX_VERSION} -eq 0 && ! -o login && $SHLVL -eq 1 ]] {
8a92a2c0 317 # Termux first process isn't login shell, so source early
b31a3fb1 318 source ${ZDOTDIR:-~}/.zprofile
319}
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