102 lines
2.7 KiB
Plaintext
102 lines
2.7 KiB
Plaintext
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#!/bin/bash
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PARAMROOT=/var/disco/parameters
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function check_names_regex() {
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echo "$1" | grep -E '^[a-zA-Z0-9_-\./]*$' >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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echo "error: Invalid characters in pathname '$1'. Valid pathname characters are [a-zA-Z0-9_-\.\/]*." >&2
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exit 1
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fi
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echo "$1" | grep "^/" >/dev/null 2>&1
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if [ $? -eq 0 ]; then
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echo "error: Pathnames cannot start with /" >&2
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exit 1
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fi
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}
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function disco_delete() {
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if [ "$1" == "--help" ] || [ "$1" == "" ]; then
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echo "info: disco-param delete [PATH_NAME] [optarg]... deletes parameter trees (recursively, if optarg is '-r'). PATH_NAME must not be empty." >&2
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exit 1
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fi
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check_names_regex "$1" || exit 1
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cd ${PARAMROOT}
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if [ "$2" == "-r" ]; then
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OUT=$(rm -rf ${1} 2>&1)
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elif [ -d ${PARAMROOT}/${1} ]; then
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# We want the error message from rmdir to have just the key path, not the param root in it
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OUT=$(rmdir ${1} 2>&1)
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else
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OUT=$(rm -f ${1} 2>&1)
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fi
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if [ "$OUT" != "" ]; then
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echo "error: $OUT" >&2
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exit 1
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fi
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exit 0
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}
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function disco_set() {
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if [ "$1" == "--help" ]; then
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echo "info: disco-param set [PATH_NAME] [optarg] ... reads from stdin and sets PATH_NAME, unless [optarg] is {}, in which case a new hierarchy is made" >&2
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exit 1
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fi
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check_names_regex "$1" || exit 1
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mkdir -p $(dirname ${PARAMROOT}/${1})
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if [ "$2" == "" ]; then
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cat > ${PARAMROOT}/${1}
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elif [ "$2" == "{}" ]; then
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if [ -e ${PARAMROOT}/${1} ] && [ ! -d ${PARAMROOT}/${1} ]; then
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echo "error: ${1} : existing type '$(stat -c '%F' ${PARAMROOT}/${1})' cannot be overriden with type 'directory'." >&2
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exit 1
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fi
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mkdir -p ${PARAMROOT}/${1}
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else
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echo "error: Unknown optarg '$2'." >&2
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exit 1
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fi
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}
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function disco_get() {
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if [ "$1" == "--help" ]; then
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echo "info: disco-param get [PATH_NAME]" >&2
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exit 1
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fi
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VARPATH=$(echo $1 | sed s/"^\/*"//g)
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check_names_regex "$VARPATH" || exit 1
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if [ -d ${PARAMROOT}/${VARPATH} ]; then
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if [ "$RECURSING" == "" ]; then
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echo "${VARPATH} = {}"
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else
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echo '{}'
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fi
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# Iterate over the path like a key/value dictionary
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cd ${PARAMROOT}/${VARPATH}
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for file in $(ls 2>/dev/null);
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do
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echo "${VARPATH}/${file} = $(RECURSING='true' disco_get ${VARPATH}/${file})" | sed s/"^\/*"//g
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done
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exit 0
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elif [ -e ${PARAMROOT}/${VARPATH} ]; then
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cat ${PARAMROOT}/${VARPATH}
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exit 0
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else
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echo "error: ${VARPATH} is undefined."
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exit 1
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fi
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}
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if [ "$1" == "--help" ]; then
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echo "info: disco-param [CMD] [OPTIONS] ... execute the given command with the given options, and return zero on success."
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echo
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$0 set --help
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$0 get --help
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$0 delete --help
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exit 0
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fi
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disco_$1 "$2" "$3" "$4" "$5" "$6"
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exit $?
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# LocalWords: regex
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