128 lines
3 KiB
Bash
Executable file
128 lines
3 KiB
Bash
Executable file
#!/bin/sh -e
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#
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# 2018 Steven Armstrong (steven-cdist at armstrong.cc)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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if [ -f "$__object/parameter/before" ] && [ -f "$__object/parameter/after" ]; then
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echo "Use either --before OR --after but not both." >&2
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exit 1
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fi
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state_should="$(cat "$__object/parameter/state")"
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state_is="$(cat "$__object/explorer/state")"
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if [ "$state_should" = "$state_is" ]; then
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# nothing to do
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exit 0
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fi
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if [ -f "$__object/parameter/before" ]; then
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position="before"
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elif [ -f "$__object/parameter/after" ]; then
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position="after"
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else
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# By default we append to the end of the file.
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position="end"
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fi
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if [ -f "$__object/parameter/regex" ]; then
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needle="regex"
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else
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needle="line"
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fi
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if [ -f "$__object/parameter/file" ]; then
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file="$(cat "$__object/parameter/file")"
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else
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file="/$__object_id"
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fi
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add=0
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remove=0
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case "$state_should" in
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present)
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if [ "$state_is" = "wrongposition" ]; then
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echo updated >> "$__messages_out"
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remove=1
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else
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echo added >> "$__messages_out"
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fi
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add=1
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;;
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absent)
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echo removed >> "$__messages_out"
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remove=1
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;;
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esac
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cat << DONE
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tmpfile=\$(mktemp ${file}.cdist.XXXXXXXXXX)
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# preserve ownership and permissions of existing file
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if [ -f "$file" ]; then
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cp -p "$file" "\$tmpfile"
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fi
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awk -v position="$position" -v needle="$needle" -v remove=$remove -v add=$add '
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function _find(_text, _pattern) {
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if (needle == "regex") {
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return match(_text, _pattern)
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} else {
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return index(_text, _pattern)
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}
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}
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BEGIN {
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line_file = ENVIRON["__object"] "/parameter/line"
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getline line < line_file
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# Need to close line file as it may be re-read as pattern below.
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close(line_file)
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getline pattern < (ENVIRON["__object"] "/parameter/" needle)
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getline anchor < (ENVIRON["__object"] "/parameter/" position)
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}
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{
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if (remove) {
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if (_find(\$0, pattern)) {
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# skip over this line -> remove it
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next
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}
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}
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if (add) {
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if (anchor && match(\$0, anchor)) {
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if (position == "before") {
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print line
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print
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} else if (position == "after") {
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print
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print line
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}
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next
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}
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}
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print
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}
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END {
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if (add && position == "end") {
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print line
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}
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}
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' "$file" > "\$tmpfile"
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mv -f "\$tmpfile" "$file"
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DONE
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if [ -f "$__object/parameter/onchange" ]; then
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cat "$__object/parameter/onchange"
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fi
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