129 lines
2.6 KiB
Bash
Executable File
129 lines
2.6 KiB
Bash
Executable File
#!/bin/sh -e
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#
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# 2020 Dennis Camera (dennis.camera@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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state_should=$(cat "${__object}/parameter/state")
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case $state_should
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in
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(present)
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if cmp "${__object}/explorer/aliases" "${__object}/parameter/alias"
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then
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# all good!
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exit 0
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fi
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echo "set aliases" >>"$__messages_out"
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mode=1
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;;
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(absent)
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# nothing to do if no aliases found.
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test -s "${__object}/explorer/aliases" || exit 0
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echo "delete aliases" >>"$__messages_out"
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mode=0
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;;
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(*)
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printf 'Invalid --state given: %s\n' "$state_should" >&2
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exit 1
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esac
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aliases_file=$(cat "${__object}/explorer/aliases_file")
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if test -z "${aliases_file}"
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then
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echo 'Could not determine aliases file path.' >&2
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exit 1
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fi
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# "export" variables to remote
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printf 'mode=%u\n' "${mode}"
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printf "aliases_file='%s'\n" "${aliases_file}"
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cat <<'EOF'
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awk -F ':[[:blank:]]*' -v mode="${mode}" '
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function sepafter(f, default, _) {
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_ = substr($0, length($f) + 1, index(substr($0, length($f)+1), $(f+1)) - 1)
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if (_) return _
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else return default
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}
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function write_aliases() {
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if (aliases_written) return
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printf "%s%s", ENVIRON["__object_id"], sepafter(1, ": ")
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while ((getline < aliases_should_file) > 0) {
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if (aliases_written) printf ", "
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printf "%s", $0
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aliases_written = 1
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}
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printf "\n"
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close(aliases_should_file)
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}
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BEGIN {
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aliases_should_file = (ENVIRON["__object"] "/parameter/alias")
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}
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/^#/ {
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# comment
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select = 0; cont = 0
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print
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next
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}
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{
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cont = ($0 ~ /\\$/)
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if (cont) sub(/[[:blank:]]*\\$/, "", $0)
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}
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/^[[:blank:]]/ || cont {
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# continuation line
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if (select) next
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}
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$1 == ENVIRON["__object_id"] {
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in_list = 1
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if (mode) write_aliases()
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next
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}
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{
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in_list = 0
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print
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}
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END {
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# if the last line as an alias definition, the separator will be reused
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if (mode && !aliases_written) write_aliases()
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}
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' <"${aliases_file}" >"${aliases_file}.tmp" || {
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echo 'Generating new aliases file failed!' >&2
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exit 1
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}
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if ! cmp "${aliases_file}" "${aliases_file}.tmp"
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then
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mv "${aliases_file}.tmp" "${aliases_file}"
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newaliases
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else
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rm "${aliases_file}.tmp"
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fi
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EOF
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