# NOTE:
# our .zprofile can be expensive, so we keep track of what has been run
-# already, and only set up what is necessary. additionally, we want to ensure
-# that our environment is set up as early as possible, so we also source
-# .zprofile in .zshenv for new non-login shells.
+# already, and only set up what is necessary. this also allows us to re-source
+# the file to reinitialize specific parts when desired.
#
-# these issues are handled by using these methods:
-# * the parent shell that starts the user's session after logging in to some
-# graphical environments may not be a login shell—due to misconfiguration
-# or otherwise—which means .zprofile is not ran and the environment is not
-# properly configured for any child processes.
-# * some desktop environments/graphical terminal emulators will start new
-# terminal windows with login shells, which runs .zprofile every time and
-# leads to noticably slow startup times if we have not already ran it.
+# in order to ensure future interactive environments are set up as early as
+# possible, we source this file from .zshenv for non-login shells, under some
+# specific conditions outlined there.
+#
+# this file respects non-interactive sessions and will not intentionally emit
+# output.
### cleanup
# XXX: only call after relevant vars have been set up, defined early so that
unset x p y
}
-### path
-# NOTE: we utilize the fact that unique arrays keep the first occurrence and
-# remove any further occurences to capture elements from the old PATH
-# that we did not anticipate and shift them to the front, since they are
-# probably important to the system
-if [[ ! -v _sev_setup_path || -o login ]] {
- typeset -U path fpath
- # add as many generic paths as possible to keep the order we want
- # NOTE: /usr/{local,pkg,games} are unix/bsdisms
- # XXX: PREFIX not validated, non-posix but Termux uses it, maybe others
- # XXX: XDG specifies ~/.local/bin as the only user-writable dir for
- # executables, but we specify more; technically this is against spec
- syspath=("$path[@]")
- path=({{${_sev_home:-~},~}{/.local,},{$PREFIX,}{,/opt,/usr{,/local,/pkg}}}/{s,}bin
- /usr/{X11R{7,6}/bin,games})
- ((len=$#path))
- path=("$path[@]" "$syspath[@]")
- # remove nonexistent and duplicate paths
- for (( i = 1; i <= $#path; i++ )) {
- if [[ ! -e $path[$i] ]] {
- path[$i]=()
- ((i <= len)) && ((len--))
- ((i--))
- continue
- }
- }
- # shift valid system paths to the front if there are any left
- ((len > 0 && len < $#path)) && path=("${(@)path[len + 1, -1]}" "${(@)path[1, len]}")
- unset syspath len i
- # include our zsh dir in fpath. unlike above, we always prefer our paths
- fpath=(${ZDOTDIR:-~/.zsh}/functions/{*,Completions/*}(N) "$fpath[@]")
- # FPATH is not exported by default
- export FPATH
- typeset +U path fpath
- export _sev_setup_path=
-}
-
-### autoload to load site specific dotfiles now that fpath is set
-autoload -Uz load-site-dotfile
-
-### load zshenv site-specific
-# NOTE: this has to be here since fpath isn't set in .zshenv
-load-site-dotfile zshenv
-
-### lang
-export CHARSET=${CHARSET:-UTF-8}
-export LANG=${LANG:-en_US.UTF-8}
-
### xdg local dir
# NOTE: need this for tmp, so confirm it exists.
# XXX: perms are not specified for XDG dirs except runtime, but I think 760
# makes the most sense. shouldn't break anything since no one else should
# be poking around in our dir.
-[[ -e ${_sev_home:-~}/.local ]] || mkdir -m760 ${_sev_home:-~}/.local
+[[ -e ~/.local ]] || mkdir -m760 ~/.local
### tmp
# NOTE: specs say that POSIX tmp and XDG runtime directories should exist
# since we can't reliably keep track of sessions in a cross-platform
# manner, the current implementation should use a separate directory per
# toplevel session (i.e. SHLVL=1). this should placate most applications,
-# though it is not expressly spec compliant.
+# though it is not expressly spec compliant. this may also cause problems
+# with disowned applications that still try to use the directories after
+# the toplevel shell has already logged out and the dirs removed, but the
+# chances of that are slim.
if [[ ! -v _sev_tmp ]] {
- _sev_tmp=${_sev_home:-~}/.local/tmp
- # NOTE: race condition/remove in use files
- [[ -h $_sev_tmp ]] && unlink $_sev_tmp 2>/dev/null
- t=${TMPDIR:-${TEMP:-${TMP:-/tmp}}}/.home-$LOGNAME
- # create personal tmp dir under system tmp
+ # create personal TMPDIR under system tmp
+ t=${TMPDIR:-${TEMPDIR:-${TEMP:-${TMP:-/tmp}}}}/.home-$LOGNAME
[[ -e $t ]] || mkdir -m700 $t 2>/dev/null
+ _sev_tmp=~/.local/tmp
if [[ ! -d $t ]] {
+ # fallback TMPDIR to bare local directory or existing softlink
[[ -o interactive ]] &&
- print -P "%F{orange}*** Can't create TMPDIR $t, using $_sev_tmp%f"
- # fallback bare directory
- [[ -e $_sev_tmp ]] || mkdir -m700 $_sev_tmp 2>/dev/null
+ print -P "%F{orange}*** Can't create tmp dir $t, using $_sev_tmp%f"
+ [[ -h $_sev_tmp && ! -d _sev_tmp ]] && unlink $_sev_tmp 2>/dev/null
+ [[ ! -e $_sev_tmp ]] && mkdir -m700 $_sev_tmp 2>/dev/null
if [[ ! -d $_sev_tmp ]] {
+ _sev_tmp=${$(mktemp 2>/dev/null):/tmp}
[[ -o interactive ]] &&
- print -P "%F{red}!!! No usable TMPDIR%f"
- unset _sev_tmp
- } else {
- t=$_sev_tmp
+ print -P "%F{red}!!! Can't create tmp dir, using $_sev_tmp%f"
}
- } elif [[ -e $_sev_tmp ]] {
+ } elif [[ -f $_sev_tmp || ( -d $_sev_tmp && ! -h $_sev_tmp ) ]] {
+ # file or non-softlink directory is on our local dir
[[ -o interactive ]] &&
- print -P "%F{orange}*** $_sev_tmp occluded, can't link to TMPDIR $t%f"
+ print -P "%F{orange}*** $_sev_tmp exists, can't link to tmp dir $t, ignoring it%f"
_sev_tmp=$t
} else {
+ # link local dir to tmp dir
+ if [[ -h $_sev_tmp && $_sev_tmp:P != $t:P ]] {
+ [[ -o interactive ]] &&
+ print -P "%F{orange}*** $_sev_tmp links to ${_sev_tmp:P} and not ${t:P}, unlinking it%f"
+ # XXX: race condition for existing sessions still using this dir
+ unlink $_sev_tmp 2>/dev/null
+ }
ln -s $t $_sev_tmp 2>/dev/null
}
if [[ -v _sev_tmp ]] {
t=$_sev_tmp/.session.$$
if ! mkdir -m700 $t 2>/dev/null; then
[[ -o interactive ]] &&
- print -P "%F{red}!!! Can't create session subdir $t, using $_sev_tmp%f"
+ print -P "%F{red}!!! Can't create session tmp subdir $t, using $_sev_tmp%f"
t=$_sev_tmp
fi
- export _sev_tmp TMPDIR=$t TEMP=$t TMP=$t
- unset t
+ export _sev_tmp TMPDIR=$t TEMPDIR=$t TEMP=$t TMP=$t
}
+ unset t
}
### xdg
# if it wasn't set, we just use default and leave it unset
# NOTE: include and then remove CONFIG_HOME and DATA_HOME to ensure they
# are not present in the array if it was added before we got to it
+
+ # source user dirs before other vars; technically it is against spec to
+ # include any of the below dirs there, but you never know what crazy shit
+ # people will do. I rather handle them sanely with our own code than let
+ # them override after the fact.
+ [[ -e $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
+ emulate sh -c "source $XDG_CONFIG_HOME/user-dirs.dirs"
+
typeset -UT XDG_DATA_DIRS xdg_data_dirs
if [[ -v XDG_DATA_HOME ]] {
export XDG_DATA_HOME
xdg_data_dirs=($XDG_DATA_HOME /{opt,usr/local,usr/pkg,usr}/share
"${XDG_DATA_DIRS:+${xdg_data_dirs[@]}}")
# XXX: if colons are not escaped, could remove unintended part of string
+ # TODO: remove empty element via array not scalar
export XDG_DATA_DIRS=${XDG_DATA_DIRS#$XDG_DATA_HOME:}
typeset -UT XDG_CONFIG_DIRS xdg_config_dirs
xdg_config_dirs=($XDG_CONFIG_HOME ${XDG_CONFIG_DIRS:+"$xdg_config_dirs[@]"}
{/opt,/usr/local,/usr/pkg,}/etc/xdg)
# XXX: if colons are not escaped, could remove unintended part of string
+ # TODO: remove empty element via array not scalar
export XDG_CONFIG_DIRS=${XDG_CONFIG_DIRS#$XDG_CONFIG_HOME:}
if [[ -v XDG_STATE_HOME ]] {
if [[ -v XDG_RUNTIME_DIR ]] {
export XDG_RUNTIME_DIR
- } else {
+ } elif [[ -v TMPDIR ]] {
# make runtime dir in our session-specific tmpdir
export XDG_RUNTIME_DIR=$TMPDIR/.xdg.runtime
# same as in tmpdir creation, ensure dir doesn't exist
mkdir -m700 $XDG_RUNTIME_DIR 2>/dev/null
}
- # source user dirs after other vars
- [[ -e $XDG_CONFIG_HOME/user-dirs.dirs ]] &&
- emulate sh -c "source $XDG_CONFIG_HOME/user-dirs.dirs"
export _sev_setup_xdg=
}
### gpg home
if [[ ! -v GNUPGHOME ]] {
export GNUPGHOME=${XDG_CONFIG_HOME:-~/.config}/gnupg
- if [[ -d ~/.gnupg ]] {
- mv ~/.gnupg ${XDG_CONFIG_HOME:-~/.config}/gnupg
+ # move existing gnupg dir to our new home
+ if [[ -d ~/.gnupg && ! -d $GNUPGHOME ]] {
+ mv ~/.gnupg $GNUPGHOME
}
}
### gpg agent + forwarding
-# NOTE: while ssh manages its auth sock in its protocol when ForwardSsh is
-# enabled, GPG must be forwarded manually over Unix socket. to support
-# this, we forward the restricted gpg-agent extra socket to the remote
-# host with a RemoteForward rule in ~/.ssh/config that uses the
-# _GNUPG_SOCK_* env vars. to avoid conflicts with other ssh sessions
-# where the same user is connecting to the same host from different
-# machines, gpg in each environment should utilize its own forwarded
-# socket, rather than replace the sockets in GNUPGHOME which will be
-# overridden on the next connection. previously, you could provide a path
-# to the agent socket in GPG_AGENT_INFO, but that was deprecated in GPG
-# v2.1. instead, we must clone GNUPGHOME with links and replace the agent
-# sockets there with the forwarded one.
+# NOTE: while ssh manages its auth sock in-protocol when ForwardSsh is enabled,
+# GPG must be forwarded manually over Unix socket. to support this, we
+# forward the restricted gpg-agent extra socket to the remote host with a
+# RemoteForward rule in ~/.ssh/config that uses the _GNUPG_SOCK_* vars.
+#
+# to avoid conflicts with other ssh sessions where the same user is
+# connecting to the same host from different machines, gpg should utilize
+# its own forwarded socket for each session. previously, you could
+# provide a path to the agent socket in GPG_AGENT_INFO, but that was
+# deprecated in GPG v2.1; instead, we must replace the socket in gpg's
+# socket dir.
+#
+# gnupg commits fb88f37–aab8a0b moved sockets from GNUPGHOME by default
+# to directories under /run. aab8a0b in particular solidifies the
+# functionality shift to utilize systemd-logind's user runtime
+# directories. if the dir isn't found, gpg will fall back to the homedir.
+# since previous functionality allowed multiple homedirs with multiple
+# sockets, a provision was added where changing GNUPGHOME will also
+# change the socket dir to a hashed dir under the usual runtime dir.
+#
+# utilizing this information, we can conclude:
+# - on systems with user runtime dirs, changing GNUPGHOME will also
+# give us a unique socket dir under the user runtime dir;
+# - on other systems, the socket dir follows GNUPGHOME.
+# therefore, the safest way to ensure unique sockets while not having to
+# write specific logic for both scenarios is to simply change GNUPGHOME.
+# the easiest way to do this is to create a new dir and link the contents
+# of GNUPGHOME to the new home. we can then replace the agent sockets
+# there with the forwarded one.
+#
# NOTE: since Unix sockets are not supported under Windows, this will not work
# under msys, cygwin, mingw, etc., but may work under wsl2.
+#
# HACK: without SendEnv, which is disabled by default in most sshd configs,
-# there is no foolproof way to prevent race conditions via filename
-# collisions or to pass the desired forward path to the remote host
-# environment. we just have to guess the path we choose is good on the
-# desination, and assume the newest matching socket is the correct one
-# after connecting. in theory, we could occlude the ssh binary on PATH
-# with an alias or script that would allow us to communicate with the
-# remote host before opening a shell, so that we can have the host
+# there is no foolproof way to prevent race conditions via socket
+# filename collisions or to pass the desired forward path to the remote
+# host environment. we just have to guess the path we choose is good on
+# the desination, and assume the newest matching socket is the correct
+# one after connecting. in theory, we could occlude the ssh binary on
+# PATH with an alias or script that would allow us to communicate with
+# the remote host before opening a shell, so that we can have the host
# communicate back to the client where it wants a socket created or ask
# the host if the path the client wants to use is writable. however, this
# would open up too many edge cases where it wouldn't work or be too
echo ${1//(#b)%([[:xdigit:]](#c2))/${(#):-0x$match[1]}}
}
if [[ ! -v _sev_setup_gpg_forward && -v commands[gpg] ]] {
- # XXX: assuming /tmo exists and is writable on destination
+ # XXX: assuming /tmp exists and is writable on destination
export _GNUPG_SOCK_DEST_BASE=/tmp/.gpg-agent-forward
export _GNUPG_SOCK_DEST_EXT=$(date +%s).$RANDOM
export _GNUPG_SOCK_DEST=$_GNUPG_SOCK_DEST_BASE.$_GNUPG_SOCK_DEST_EXT
- export _sev_gpg_forward_dir=${GNUPGHOME:-~/.gnupg}/.ssh_forward
+ export _sev_gpg_forward_dir=$XDG_RUNTIME_DIR/gnupg/.ssh_forward
_sev_zcleanup gpg-forward
# find our forwarded socket
export _sev_setup_gpg_forward=
h=$_sev_gpg_forward_dir/$$
mkdir -pm700 $h
- # XXX: is it safe to link scdaemon socket? can its name be changed?
- for x (S.scdaemon gpg.conf gpg-agent.conf sshcontrol random_seed
+ for x (gpg{,-agent}.conf sshcontrol random_seed
pubring.kbx{,~} trustdb.gpg private-keys-v1.d crls.d) {
ln -s ${GNUPGHOME:-~/.gnupg}/$x $h
}
unset h
for x in $(gpgconf --list-dirs | grep 'agent-.*-\?socket:'); do
x=$(_gpg_socketpath ${x/#agent-*socket:})
- if [[ ! -v orig ]] {
+ if [[ ! -v primary ]] {
# move forwarded socket to first valid agent socket path
# XXX: if tmp is on different filesystem this may not work
mv $s $x
- orig=$x
+ primary=$x
} else {
# make links to forwarded socket for any others
- ln -s $orig $x
+ ln -s $primary $x
}
done
- unset x orig
+ unset x primary
}
unset s
# XXX: don't know if gpg-agent supports comments after directives
# XXX: path could have #
# XXX: we are assuming this is our pinentry from .local/bin
- sed -Ei 's#^([[:space:]]*pinentry-program[[:space:]]).*$#\1'${commands[pinentry]:-/dev/null}'#' \
+ sed -Ei 's#^([[:space:]]*pinentry-program[[:space:]]).*$#\1'$HOME'/.local/bin/pinentry#' \
${GNUPGHOME:-~/.gnupg}/gpg-agent.conf 2>/dev/null
# XXX: could check for changes before doing this to save perf
gpg-connect-agent RELOADAGENT UPDATESTARTUPTTY /bye >/dev/null 2>&1
eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5 \
-Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
-
### load site-specific
load-site-dotfile zprofile
projects / sev's projects / dotfiles.git / blobdiff