-### exports
-## reset PATH to prevent /etc/zprofile from changing it
-# some distros put non-interactive PATH in env and interactive PATH in profile;
-# we want to make sure to always use ours regardless
-if [[ -v _sev_backup_path ]] {
- path=("${_backup_path[@]}" "${path[@]}")
- export PATH
- unset _sev_backup_path
+# NOTE:
+# our .zprofile is 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.
+#
+# 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.
+# * switching users without wiping the environment will result in paths and
+# variables intended for the old user being used for the new user. while
+# this may be considered an edge-case that should not be supported, there
+# are legitimate reasons to want to do this, and in any case the shell
+# should not choke or cause unexpected problems should it happen anyway.
+
+### lang
+export CHARSET=UTF-8
+export LANG=en_US.UTF-8
+export LC_CTYPE=$LANG
+### path
+# NOTE: we utilize the fact that unique arrays keep the first occurrence and
+# remove any further occurences to capture elements from the old PATH
+# that we did not anticipate and shift them to the front, since they are
+# probably important to the system
+if [[ ! -v _sev_setup_path || -o login ]] {
+ typeset -U path fpath
+ # add as many generic paths as possible to keep the order we want
+ # NOTE: /usr/{local,pkg,games} are unix/bsdisms
+ syspath=("$path[@]")
+ path=({~/,/,/usr/}sbin /opt/{s,}bin /usr/local/{s,}bin /usr/pkg/{s,}bin
+ /usr/X11R{7,6}/bin /usr/games {~/,/,/usr/}bin)
+ ((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]}" "${(@)path[1, len]}")
+ unset syspath len i j
+ # include our zsh dir in fpath. unlike above, we always prefer our paths
+ fpath=(${ZDOTDIR:-~/.zsh}/functions/{*,Completions/*}(N) "$fpath[@]")
+ # FPATH is not exported by default
+ export FPATH
+ typeset +U path fpath
+ export _sev_setup_path=
}
-## common
-export EDITOR=vim
-export PAGER=less
-## grep
-# XXX: deprecated in GNU
-export GREP_OPTIONS=--color=auto
-## histfile
-export HISTFILE=~/.histfile
-export HISTSIZE=1000
-export SAVEHIST=1000
-## python
-export PYTHONSTARTUP=~/.pythonrc
-## perl
-[[ -v commands[perl] ]] && eval $(perl -I $XDG_DATA_HOME/perl5/lib/perl5 -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
-### ssh agents
-# NOTE: preferred order of agents to check: okcagent, gnupg, openssh
-# first block takes care of okcagent and openssh, second handles gnupg
-if [[ ! -v SSH_AUTH_SOCK && ( -v commands[okc-ssh-agent] ||
- ( -v commands[ssh-agent] && ! -v commands[gpg] ) ) ]] {
- okc=${commands[okc-ssh-agent]:+okc-}
- agentfile=~/tmp/${okc}ssh-agent-exports
- typeset sock=
- typeset -i pid=
- if [[ -f "$agentfile" ]] {
- IFS=$'\0' read -r sock pid <"$agentfile"
+### temp
+# NOTE: it's intentional to separate POSIX tmp for each session (spec says
+# programs should not expect data there to be long-lived) and to keep the
+# same runtime dir and not create a new one if a new login shell is
+# spawned, since the XDG spec calls for the same dir to be utilized for
+# each "session".
+if [[ ! -v _sev_setup_tmp ]] {
+ t=${TMPDIR:-${TEMP:-${TMP:-/tmp}}}/.home-$LOGNAME
+ h=~/tmp
+ [[ ! -e $t ]] && mkdir -pm700 $t 2>/dev/null
+ if [[ ! -d $t ]] {
+ [[ -o interactive ]] &&
+ print -P "%F{red}!!! Can't create temp dir $t%f"
+ # fallback bare directories
+ [[ -h $h ]] && unlink $h 2>/dev/null
+ [[ ! -e $h ]] && mkdir -m700 $h 2>/dev/null
+ }
+ # [re-]create link to our tmp
+ [[ -h $h || ! -e $h ]] && ln -sfn $t $h 2>/dev/null
+ # finally create our subdir for this session
+ export _sev_tmp=$h/.session.$$
+ # ensure dir doesn't exist. if there is already something there it is
+ # likely a stale directory or something is very broken—assume the former.
+ # the user could also want dirs recreated by unsetting the var.
+ if [[ -h $_sev_tmp ]] {
+ unlink $_sev_tmp 2>/dev/null
+ } elif [[ -e $_sev_tmp ]] {
+ rm -rf $_sev_tmp 2>/dev/null
}
- if [[ -S "$sock" && $pid > 0 ]] && kill -0 $pid; then
- echo "Reusing agent pid $pid"
- export SSH_AUTH_SOCK="$sock"
- export SSH_AGENT_PID=$pid
- else
- # TODO: ensure ssh-agent path looks legit
- # to avoid unsafe eval?
- eval `${okc}ssh-agent`
- echo -n "$SSH_AUTH_SOCK"$'\0'$SSH_AGENT_PID >!$agentfile
- fi
- unset okc agentfile sock pid
-} elif [[ -v commands[gpg] && ! -S $_GNUPG_SOCK_DEST && \
- ( ! -v SSH_AUTH_SOCK || -v DISPLAY ) ]] {
- export GPG_TTY=$(tty)
- export PINENTRY_USER_DATA=USE_TTY=$((!${+DISPLAY}))
- gpg-connect-agent UPDATESTARTUPTTY /bye >/dev/null 2>&1
- gpg-connect-agent /subst /serverpid \
- '/echo GPG agent pid ${get serverpid}' /bye
- [[ ! -v SSH_AUTH_SOCK ]] && \
- export SSH_AUTH_SOCK=$(gpgconf --list-dirs agent-ssh-socket)
+ mkdir -m700 $_sev_tmp 2>/dev/null
+ export TMPDIR=$_sev_tmp TEMP=$_sev_tmp TMP=$_sev_tmp
+ unset t h
+ export _sev_setup_tmp=
}
-### gpg socket
-if [[ -v _GNUPG_SOCK_SRC && -v _GNUPG_SOCK_DEST && -S $_GNUPG_SOCK_DEST ]] {
- unlink $_GNUPG_SOCK_SRC >/dev/null 2>&1
- mv $_GNUPG_SOCK_DEST $_GNUPG_SOCK_SRC >/dev/null
+### xdg
+if [[ ! -v _sev_setup_xdg ]] {
+ # merge with any existing dirs and remove duplicates using unique arrays
+ # 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
+ typeset -UT XDG_CONFIG_DIRS xdg_config_dirs
+ typeset -UT XDG_DATA_DIRS xdg_data_dirs
+ export XDG_CONFIG_HOME=$HOME/etc
+ xdg_config_dirs=($XDG_CONFIG_HOME $HOME/.config
+ {/opt,/usr/local,/usr/pkg,}/etc/xdg
+ "${XDG_CONFIG_DIRS:+${xdg_config_dirs[@]}}")
+ export XDG_CONFIG_DIRS=${XDG_CONFIG_DIRS#$XDG_CONFIG_HOME}
+ export XDG_DATA_HOME=$HOME/share
+ xdg_data_dirs=($XDG_DATA_HOME $HOME/.local/share
+ /{opt,usr/local,usr/pkg,usr}/share
+ "${XDG_DATA_DIRS:+${xdg_data_dirs[@]}}")
+ export XDG_DATA_DIRS=${XDG_DATA_DIRS#$XDG_DATA_HOME}
+ # use our custom tmp for cache and runtime
+ export XDG_CACHE_HOME=$_sev_tmp/.xdg.cache
+ export XDG_RUNTIME_DIR=$_sev_tmp/.xdg.runtime
+ # create xdg tmp dirs
+ for x in $XDG_CACHE_HOME $XDG_RUNTIME_DIR; do
+ # same as in temp creation, ensure it doesn't exist
+ if [[ -h $x ]]; then
+ unlink $x 2>/dev/null
+ elif [[ -e $x ]]; then
+ rm -rf $x 2>/dev/null
+ fi
+ mkdir -m700 $x 2>/dev/null
+ done
+ # 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 + ssh + 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: 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
+# 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 clunky
+# (e.g. asking for password twice) to make it worth it.
+if [[ ! -v _sev_setup_agents ]] {
+ function _socketpath {
+ # dirs are percent-encoded: https://stackoverflow.com/a/64312099
+ echo ${1//(#b)%([[:xdigit:]](#c2))/${(#):-0x$match[1]}}
+ }
+
+ ## gpg forwarding
+ if [[ ! -v _sev_gpg_forwarded && -v commands[gpg] ]] {
+ 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
+ # clean up forward dirs if its session is dead or we ask for it
+ if [[ -d $_sev_gpg_forward_dir ]] {
+ find $_sev_gpg_forward_dir -type d -mindepth 1 -maxdepth 1 |
+ while read -r x; do
+ # NOTE: the only way we can get here is if we have not been
+ # forwarded before or if the user asks for it. if our own
+ # pid already has a dir, it is most likely stale, or
+ # something is very broken—assume the former.
+ p=$(basename $x)
+ if [[ -v _sev_gpg_forward_clean || $$ == $p ]] ||
+ ! kill -0 $p 2>/dev/null; then
+ find $x -mindepth 1 -maxdepth 1 | while read -r y; do
+ unlink $y
+ done
+ rmdir $x
+ fi
+ done
+ unset x p y
+ }
+
+ # find our forwarded socket
+ s=($_GNUPG_SOCK_DEST_BASE*(N=oc[1]))
+ if [[ -n $s && -v SSH_CLIENT ]] {
+ # create new forward dir
+ export _sev_gpg_forwarded=
+ mkdir -pm700 $_sev_gpg_forward_dir
+ h=$_sev_gpg_forward_dir/$$
+ mkdir -pm700 $h
+ # XXX: is it safe to link scdaemon socket? can its name be changed?
+ for x in S.scdaemon gpg.conf gpg-agent.conf sshcontrol \
+ pubring.kbx trustdb.gpg private-keys-v1.d crls.d; do
+ ln -s ${GNUPGHOME:-~/.gnupg}/$x $h
+ done
+ export GNUPGHOME=$h
+ unset h
+ for x in $(gpgconf --list-dirs | grep 'agent-.*-\?socket:'); do
+ x=$(_socketpath ${x/#agent-*socket:})
+ if [[ ! -v orig ]] {
+ # 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
+ } else {
+ # make links to forwarded socket for any others
+ ln -s $orig $x
+ }
+ done
+ unset x orig
+ }
+ unset s
+
+ # what we will forward if we start a new ssh connection
+ # NOTE: do this after setting up GNUPGHOME to pick up new socket path;
+ # if already connected over SSH, extra should be the remote one
+ export _GNUPG_SOCK_SRC=$(_socketpath \
+ $(gpgconf --list-dirs agent-extra-socket))
+ } else {
+ # required for RemoteForward to not error out if the vars are unset
+ [[ ! -v _GNUPG_SOCK_SRC ]] && export _GNUPG_SOCK_SRC=/nonexistent
+ [[ ! -v _GNUPG_SOCK_DEST ]] && export _GNUPG_SOCK_DEST=/nonexistent
+ }
+
+ ## gpg agent
+ if [[ -v commands[gpg-connect-agent] ]] {
+ [[ -o interactive ]] && print -nP '%F{blue}>>>%f GPG agent: %F{green}'
+ gpg-connect-agent /bye >/dev/null 2>&1
+ if [[ $? -ne 0 ]] {
+ [[ -o interactive ]] &&
+ print -P '%F{red}Error communicating with GPG agent%f'
+ } elif [[ ! -v _sev_gpg_forward && ! -v GPG_TTY &&
+ ( -o interactive || -v DISPLAY ) ]] {
+ # if we aren't forwarded, set up tty if it isn't and we're
+ # in an interactive session
+ export GPG_TTY=$(tty)
+ export PINENTRY_USER_DATA=USE_TTY=$((!${+DISPLAY}))
+ gpg-connect-agent UPDATESTARTUPTTY /bye >/dev/null 2>&1
+ [[ -o interactive ]] &&
+ print -P "Updated TTY%f"
+ } else {
+ [[ -o interactive ]] &&
+ print -P 'Ready%f'
+ }
+ }
+
+ ## ssh agent
+ # NOTE: preferred order of agents to check: okcagent, gnupg, openssh
+ # first block takes care of okcagent and openssh, second gnupg
+ [[ -o interactive ]] && print -nP '%F{blue}>>>%f SSH: %F{green}'
+ if [[ ! -v SSH_AUTH_SOCK && ( -v commands[okc-ssh-agent] ||
+ ( -v commands[ssh-agent] && ! -v commands[gpg] ) ) ]] {
+ okc=${commands[okc-ssh-agent]:+okc-}
+ agentfile=~/tmp/${okc}ssh-agent-exports
+ typeset sock=
+ typeset -i pid=
+ if [[ -f $agentfile ]] {
+ IFS=$'\0' read -r sock pid <$agentfile
+ }
+ if [[ -S $sock && $pid > 0 ]] && kill -0 $pid; then
+ [[ -o interactive ]] && print -P "Reusing agent PID $pid%f"
+ export SSH_AUTH_SOCK=$sock
+ export SSH_AGENT_PID=$pid
+ else
+ e=${okc}ssh-agent
+ # TODO: ensure ssh-agent path looks legit to avoid unsafe eval?
+ # XXX: doesn't appear to be any other way to handle redirection.
+ # because eval needs to write to current scope environment
+ # subshells can't be used to capture output and print.
+ if [[ -o interactive ]] {
+ eval `$e`
+ print -nP '%f'
+ } else {
+ eval `$e` >/dev/null 2>&1
+ }
+ echo -n $SSH_AUTH_SOCK$'\0'$SSH_AGENT_PID >!$agentfile
+ fi
+ unset okc agentfile sock pid
+ } elif [[ ! -v SSH_AUTH_SOCK && -v commands[gpg] ]] {
+ # since gpg agent was started above, we just have to export and notify
+ if [[ -o interactive ]] {
+ if [[ -v _sev_gpg_forwarded ]] {
+ echo 'Remote GPG agent'
+ } else {
+ gpg-connect-agent /subst /serverpid \
+ '/echo GPG agent PID ${get serverpid}' /bye
+ }
+ print -nP '%f'
+ }
+ export SSH_AUTH_SOCK=$(_socketpath \
+ $(gpgconf --list-dirs agent-ssh-socket))
+ } elif [[ -v SSH_AUTH_SOCK ]] {
+ [[ -o interactive ]] && print -P 'Preconfigured agent%f'
+ } else {
+ [[ -o interactive ]] && print -P '%F{red}No agent available%f'
+ }
+
+ ## cleanup
+ unfunction _socketpath
+
+ export _sev_setup_agents=
+}
+
+## perl local lib
+# TODO: debounce this
+[[ -v commands[perl] && -d $XDG_DATA_HOME/perl5/lib/perl5 ]] &&
+ eval $(perl -I$XDG_DATA_HOME/perl5/lib/perl5
+ -Mlocal::lib=$XDG_DATA_HOME/perl5 2>/dev/null)
+
### load site-specific
if [[ -f ~/.zprofile.local ]] { source ~/.zprofile.local }
-# vim: set et sts=4 sw=4 ts=8 tw=79 :
+# vim: et sts=4 sw=4 ts=8 tw=79
projects / sev's projects / dotfiles.git / blobdiff