98 lines
2.3 KiB
Bash
98 lines
2.3 KiB
Bash
#!/bin/sh
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#
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# 2020 Dennis Camera (dennis.camera at ssrq-sds-fds.ch)
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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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# This explorer retrieves the current state of the configuration option
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# The output of this explorer is one of these values:
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# present
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# The configuration option is present and has the value of the
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# parameter --value.
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# absent
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# The configuration option is not defined.
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# different
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# The configuration option is present but has a different value than the
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# parameter --value.
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# rearranged
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# The configuration option is present (a list) and has the same values as
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# the parameter --value, but in a different order.
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RS=$(printf '\036')
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option=${__object_id:?}
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values_is=$(uci -s -N -d "${RS}" get "${option}" 2>/dev/null) || {
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echo absent
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exit 0
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}
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if test -f "${__object:?}/parameter/value"
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then
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should_file="${__object:?}/parameter/value"
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else
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should_file='/dev/null'
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fi
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# strip off trailing newline
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printf '%s' "${values_is}" \
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| awk '
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BEGIN {
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state = "present" # assume all is fine
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}
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NR == FNR {
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# memoize "should" state
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should[FNR] = $0
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# go to next line (important!)
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next
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}
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# compare "is" state
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$0 == should[FNR] { next }
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FNR > length(should) {
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# there are more "is" records than "should" -> definitely different
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state = "different"
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exit
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}
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{
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# see if we can find the value somewhere in should
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for (i in should) {
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if ($0 == should[i]) {
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# ... value found -> rearranged
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# FIXME: Duplicate values are not properly handled here. Do they matter?
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state = "rearranged"
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next
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}
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}
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state = "different"
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exit
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}
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END {
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if (FNR < length(should)) {
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# "is" was shorter than "should" -> different
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state = "different"
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}
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print state
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}
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' "${should_file}" RS="${RS}" -
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