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#!/bin/bash -e
## Copyright (c) 2005 David B. Harris <dbharris@eelf.ddts.net>
## Copyright (c) 2005,2016 Peter Palfrader <peter@palfrader.org>
## This text is released under the "three-clause BSD license".
## The full text of the license is available at the end of this file.
set -e
set -u
printf "\nrecvconf on %s processing:\n" "$(hostname -s)"
FILELIST=/etc/NOREPLY/recvconf.files
while [ "$#" -gt 0 ]; do
case "$1" in
-f)
shift;
FILELIST="$1"; shift
;;
*)
echo >&2 "Usage: $0 [-f <recvconf.files>"
exit 1
;;
esac
done
temptar=""
tempscript=""
tempoutput=""
tempdir=""
cleanup() {
cd /
if [ -n "$temptar" ]; then
rm -f "$temptar"
fi
if [ -n "$tempscript" ]; then
rm -f "$tempscript"
fi
if [ -n "$tempoutput" ]; then
rm -f "$tempoutput"
fi
if [ -n "$tempdir" ]; then
rm -rf "$tempdir"
fi
}
trap 'cleanup' EXIT
temptar="$(mktemp)"
chmod 0600 "$temptar"
tempscript="$(mktemp)"
chmod 0600 "$tempscript"
tempdir="$(mktemp -d)"
# Read tarball from STDIN
gzip -dc > "$temptar"
cd "$tempdir"
tar xf "$temptar"
copy_and_runcommands() {
local file perms user group precommand postcommand
file="$1"; perms="$2"; user="$3"; group="$4"; precommand="$5"; postcommand="$6"
if [ -f "$file" ]; then
if [ -h "$file" ]; then # File should NOT be a symlink
printf "\`%s' is a symlink, aborting.\n" "$file" >&2
return 1
fi
if ! [ "$file" -nt "/$file" ]; then
rm -f "$file"
return 0
fi
if [ -n "$precommand" ]; then
printf "Running precommand \`%s' for %s\n" "$precommand" "$file" >&2
eval -- $precommand >&2
fi
if [ -n "$perms" ]; then
chmod -- "$perms" "$file"
else
printf "Warning, no perms defined for \`%s', assuming 0640.\n" "$file" >&2
chmod 0640 "$file"
fi
if [ -n "$user" ]; then
chown -- "$user" "$file"
else
printf "Warning, no user defined for \`%s', assuming root.\n" "$file" >&2
chown root "$file"
fi
if [ -n "$group" ]; then
chgrp -- "$group" "$file"
else
printf "Warning, no group defined for \`%s', assuming root.\n" "$file" >&2
chgrp root "$file"
fi
if [ ! -d "/$(dirname "$file")" ]; then
printf "Directory \`%s' does not exist, aborting.\n" "$(dirname "$file")" >&2
exit 1
fi
cp -a -- "$file" "/$(dirname "$file")" >&2
ls -l "/$(dirname "$file")/$(basename "$file")" >&2
if [ -n "$postcommand" ]; then
if ! grep -F -- "$postcommand" "$tempscript" > /dev/null 2>&1; then
printf "%s\n" "$postcommand" >> "$tempscript"
fi
fi
rm -f -- "$file"
fi
}
IN=0
linenum=0
nextfile=""
while read line; do
linenum="$(($linenum + 1))"
if printf "%s\n" "$line" | grep -E '^[[:space:]]*$' > /dev/null 2>&1; then
## This line is an empty line; skip it
continue
elif printf "%s" "$line" | grep -E '^[[:space:]]*#' > /dev/null 2>&1; then
## This line is a comment; skip it
continue
fi
## IN=0, so we're out of a stanza: better get a file declaration next
if [ "$IN" = "0" ] && ! printf "%s" "$line" | grep -E '^[[:space:]]*file[[:space:]]' > /dev/null 2>&1; then
printf "Error on line %s, file declaration expected. Got\n\t%s\n" "$linenum" "$line" >&2
exit 1
elif [ "$IN" = 0 ] && printf "%s" "$line" | grep -E '^[[:space:]]*file[[:space:]]' > /dev/null 2>&1; then
## Okay, we're just starting out; set $file and move on
file="$(printf "%s" "$line" | sed -e 's/[[:space:]]*file[[:space:]]\+\([^[:space:]#]*\).*/\1/')"
IN=1
continue
elif [ "$IN" = 1 ] && printf "%s" "$line" | grep -E '^[[:space:]]*file[[:space:]]' > /dev/null 2>&1; then
## Okay, not only are we at a file declaration, but this isn't our first one. Run the commands to process
## the file, then set a $file to the new value and continue parsing.
[ -n "$file" ] && copy_and_runcommands "$file" "$perms" "$user" "$group" "$precommand" "$postcommand"
file="$(printf "%s" "$line" | sed -e 's/[[:space:]]*file[[:space:]]\+\([^[:space:]#]*\).*/\1/')"
perms=""; user=""; group=""; precommand=""; postcommand=""
continue
fi
## The last two if blocks weren't processed; thus this isn't a comment, a blank line, and we're in the middle of a stanza
if printf "%s" "$line" | grep -E '^[[:space:]]*perms[[:space:]]' > /dev/null 2>&1; then
perms="$(printf "%s" "$line" | sed -e 's/[[:space:]]*perms[[:space:]]\+\([^[:space:]#]*\).*/\1/')"
continue
elif printf "%s" "$line" | grep -E '^[[:space:]]*user[[:space:]]' > /dev/null 2>&1; then
user="$(printf "%s" "$line" | sed -e 's/[[:space:]]*user[[:space:]]\+\([^[:space:]#]*\).*/\1/')"
continue
elif printf "%s" "$line" | grep -E '^[[:space:]]*group[[:space:]]' > /dev/null 2>&1; then
group="$(printf "%s" "$line" | sed -e 's/[[:space:]]*group[[:space:]]\+\([^[:space:]#]*\).*/\1/')"
continue
elif printf "%s" "$line" | grep -E '^[[:space:]]*precommand[[:space:]]' > /dev/null 2>&1; then
precommand="$(printf "%s" "$line" | sed -e 's/[[:space:]]*precommand[[:space:]]\+\([^[:space:]#]*\)/\1/')"
continue
elif printf "%s" "$line" | grep -E '^[[:space:]]*postcommand[[:space:]]' > /dev/null 2>&1; then
postcommand="$(printf "%s" "$line" | sed -e 's/[[:space:]]*postcommand[[:space:]]\+\([^[:space:]#]*\)/\1/')"
continue
else
printf "Unknown token at line %s:\n\t%s\n" "$linenum" "$line"
fi
done < "$FILELIST"
## This is the last stanza and the above loop has set the variables, but hasn't yet processed the file
[ -n "$file" ] && copy_and_runcommands "$file" "$perms" "$user" "$group" "$precommand" "$postcommand"
if [ -s "$tempscript" ]; then
tempoutput="$(mktemp)"
## Post-copying commands to be run, run them here. Only display output if they exit with $? > 0
while read command; do
printf "Running postcommand \`%s' on %s.\n" "$command" "$(hostname -s)" >&2
if ! eval -- "(cd / && env -i $command)" > "$tempoutput" 2>&1; then
printf "Error, postcommand \`%s' on %s failed. Output follows:\n" "$command" "$(hostname -s)" >&2
cat -- "$tempoutput" >&2
exit 1
fi
done < "$tempscript"
fi
# Check for any leftover files here; if there are any, exit with an error and print the list
if [ ! -z "$(find . -type f)" ]; then
printf "The following files were not listed in $FILELIST:\n%s\n" "$(find . -type f)" >&2
exit 1
fi
printf "recvconf on %s finished.\n" "$(hostname -s)"
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
##
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
##
## * Redistributions in binary form must reproduce the above
## copyright notice, this list of conditions and the following disclaimer
## in the documentation and/or other materials provided with the
## distribution.
##
## * Neither the names of the copyright owners nor the names of its
## contributors may be used to endorse or promote products derived from
## this software without specific prior written permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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