#!/bin/sh -e # # 2012 Steven Armstrong (steven-cdist at armstrong.cc) # # This file is part of cdist. # # cdist is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # cdist is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with cdist. If not, see <http://www.gnu.org/licenses/>. # # # __remote_{exec,copy} script to run cdist against a schroot target uri # # Usage: # cdist config \ # --remote-exec "/path/to/this/script exec" \ # --remote-copy "/path/to/this/script copy" \ # target_uri # # # target_uri examples: # schroot:///chroot-name # schroot://foo.ethz.ch/chroot-name # schroot://user-name@foo.ethz.ch/chroot-name # # # and how to match them in .../manifest/init # case "$target_host" in # schroot://*) # # any schroot # ;; # schroot://foo.ethz.ch/*) # # any schroot on specific host # ;; # schroot://foo.ethz.ch/chroot-name) # # specific schroot on specific host # ;; # schroot:///chroot-name) # # specific schroot on localhost # ;; # esac my_name="${0##*/}" mode="$1"; shift log() { # uncomment me for debugging #echo "$@" | logger -t "cdist-$my_name-$mode" : } die() { echo "$@" >&2 exit 1 } uri="$__target_host" scheme="${uri%%:*}"; rest="${uri#$scheme:}"; rest="${rest#//}" authority="${rest%%/*}"; rest="${rest#$authority}" path="${rest%\?*}"; rest="${rest#$path}" schroot_name="${path#/}" [ "$scheme" = "schroot" ] || die "Failed to parse scheme from __target_host ($__target_host). Expected 'schroot', got '$scheme'" [ -n "$schroot_name" ] || die "Failed to parse schroot name from __target_host: $__target_host" case "$authority" in '') # authority is empty, neither user nor host given user="" host="" ;; *@*) # authority contains @, take user from authority user="${authority%@*}" host="${authority#*@}" ;; *) # no user in authority, default to root user="root" host="$authority" ;; esac log "mode: $mode" log "@: $@" log "uri: $uri" log "scheme: $scheme" log "authority: $authority" log "user: $user" log "host: $host" log "path: $path" log "schroot_name: $schroot_name" exec_prefix="" copy_prefix="" if [ -n "$host" ]; then # we are working on a remote host exec_prefix="ssh -o User=$user -q $host" copy_prefix="scp -o User=$user -q" copy_destination_prefix="$host:" else # working on local machine copy_prefix="cp" copy_destination_prefix="" fi log "exec_prefix: $exec_prefix" log "copy_prefix: $copy_prefix" log "copy_destination_prefix: $copy_destination_prefix" case "$mode" in exec) # In exec mode the first argument is the __target_host which we already got from env. Get rid of it. shift code="$exec_prefix schroot -c $schroot_name -- sh -c '$@'" ;; copy) # get directory for given chroot_name schroot_directory="$($exec_prefix schroot -c $schroot_name --config | awk -F = '/directory=/ {print $2}')" [ -n "$schroot_directory" ] || die "Failed to retreive schroot directory for schroot: $schroot_name" log "schroot_directory: $schroot_directory" # prefix destination with chroot code="$copy_prefix $(echo "$@" | sed "s|$uri:|${copy_destination_prefix}${schroot_directory}|g")" ;; *) die "Unknown mode: $mode";; esac log "code: $code" # Run the code $code log "-----"