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151 lines
5.4 KiB
Bash
151 lines
5.4 KiB
Bash
#!/bin/bash
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[ "$1" = "set.txt" ] && . set.txt 2> /dev/null
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varName="servicedesc"
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varDefault=""
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myDelim="[ :]"
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myField=""
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myHost=""
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myService=""
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myContact=""
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myString=""
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doNumber=""
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doPipe=""
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doLower=""
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doUpper=""
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doVerbose=""
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doNCPA=""
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do_help() {
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cat << HELP_EOF
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This utility is designed to be called by the ARGx parameters of a Nagios configuration as one of the following:
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\$\$(\$USER1\$/env [-n <var>] [-t <default>] [-f|-F <field>] [-d <delim>] [-s <val>] [-u|-l] [-H|-S|-C <suffix>] [-v]
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\$\$(\$USER1\$/env -N [-NP] [-H suffix]
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Where:
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var the name of a case-insensitive NAGIOS_variable (defaults to "servicedesc")
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default a default value if \$NAGIOS_var\$ is blank (case sensitive)
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field an awk-compatible field number (potentially to use with <delim>) (see below)
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delim an awk-compatible field delimiter (defaults to space and colon)
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-u Convert the output to uppercase
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-l Convert the output to lowercase
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-p Convert / to | (mainly for disk names in NCPA checks)
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suffix Take var result and use the it to get NAGIOS__[HOST|SERVICE|CONTACT]<result><suffix>
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-v Be verbose (only for debugging)
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-s The result must match this value or else it will return blank
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--num The result will have all non-numbers stripped from it
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-NP Returns NAGIOS__HOSTNCPAPORT (implied default of 5693)
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-N Look for NAGIOS__HOSTNCPA<suffix> (defaults to TOKEN)
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Can do double lookup if -H is specified directly: -H TOKEN will find NAGIOS__HOSTNCPATOKEN=Level1 which then finds NAGIOS__HOSTLEVEL1TOKEN=Secret
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Or -H PASS will find NAGIOS__HOSTNCPAPASS=Level2 which will then find NAGIOS__HOSTLEVEL2PASS=SuperSecret
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The value will always be trimmed of leading and/or trailing spaces/tabs.
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If -f is used, then the result will be as if the request were as follows, unless the field starts with a negative, in which case it will read from the last word forward:
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echo \$NAGIOS_var\$ | awk -F <delim> '{print $<field>}'
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If -F is used, -d is forced to " " and the field number reflects is the first, second, or third of the last three fields
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Ex: Disk check on / 80 90 With -F 1=/, -F 2=80, -F 3=90
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Examples (service_description is assumed to be "MySQL Check: myDatabase performance"):
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.../env Return: "MySQL Check: myDatabase performance"
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.../env -n hostName Return: "localhost" (or whatever the name of the host is that ran the check)
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.../env -n SERVICESTATE -t 0 Return: current state of the service (0, 1, 2) or 0 if the state is not defined
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.../env -n servicedesc -f 2 Return: "Check" (watch out for defaults!)
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.../env -n servicedesc -f 4 Return: "myDatabase" (watch out for defaults!)
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.../env -n servicedesc -d : -f 2 Return: "myDatabase performance"
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.../env -n servicedesc -d : -f -2 Return: "MySQL Check" (2nd field from right, split by :)*
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.../env -n servicedesc -f -2 -H pass Return: the value of \$NAGIOS__HOSTNAGIOSXIPASS\$
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see https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/4/en/macrolist.html for possible macro names.
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*0 for this field will print the entire line
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HELP_EOF
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exit
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}
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while [ -n "$1" ]; do
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case "$1" in
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-h|--help) do_help;;
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-n) varName="$2"; shift 2;;
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-t) varDefault="$2"; shift 2;;
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-d) myDelim="$2"; shift 2;;
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-f) myField="$2"; shift 2;;
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-F) myDelim=" "; myField=$(($2-4)); shift 2;;
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-H) myHost="$2"; shift 2;;
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-S) myService="$2"; shift 2;;
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-C) myContact="$2"; shift 2;;
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-s) myString="$2"; shift 2;;
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--num) doNumber="true"; shift 1;;
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-N) doNCPA="true"; shift 1;;
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-NP) varName="NAGIOS__HOSTNCPAPORT"; varDefault="5693"; shift 1;;
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-p) doPipe="true"; shift 1;;
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-u) doUpper="true"; shift 1;;
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-l) doLower="true"; shift 1;;
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-v) doVerbose="true"; shift 1;;
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*) shift 1;;
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esac
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done
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do_debug() {
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[ -n "$doVerbose" ] && echo "DEBUG: $*"
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}
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if [ -n "$doNCPA" ]; then
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do_debug "NCPA mode active. myHost=$myHost"
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varName=`echo "NAGIOS__HOSTNCPA${myHost:-token}" | tr "a-z" "A-Z"`
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else
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do_debug "NCPA mode NOT active."
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varName=`echo "NAGIOS_$varName" | tr "a-z" "A-Z"`
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fi
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do_debug "Looking for $varName..."
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varValue="${!varName}"
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do_debug "Got varValue=$varValue"
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if [ -n "$myField" ]; then
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do_debug "myField=$myField"
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if [ "$myField" -lt 0 ]; then
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varValue=`echo "$varValue" | rev | awk -F "$myDelim" -v f="${myField:1}" '{print $f}' | rev`
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else
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varValue=`echo "$varValue" | awk -F "$myDelim" -v f="$myField" '{print $(f)}'`
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fi
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fi
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varValue=`echo $varValue | sed -e "s/^[ \t]*//" -e "s/[ \t]*$//"`
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do_debug "After processing varValue=$varValue"
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[ -n "$doUpper" ] && varValue=`echo "$varValue" | tr "a-z" "A-Z"`
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[ -n "$doLower" ] && varValue=`echo "$varValue" | tr "A-Z" "a-z"`
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# Check for myHost
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if [ -n "$myHost" ]; then
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myHost=`echo "NAGIOS__HOST${varValue}${myHost}" | tr "a-z" "A-Z"`
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do_debug "myHost=$myHost"
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varValue=${!myHost}
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fi
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# Check for myService
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if [ -n "$myService" ]; then
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myService=`echo "NAGIOS__SERVICE${varValue}${myService}" | tr "a-z" "A-Z"`
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do_debug "myService=$myService"
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varValue=${!myService}
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fi
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# Check for myContact
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if [ -n "$myContact" ]; then
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myContact=`echo "NAGIOS__CONTACT${varValue}${myContact}" | tr "a-z" "A-Z"`
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do_debug "myContact=$myContact"
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varValue=${!myContact}
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fi
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[ -n "$myString" -a "$myString" != "$varValue" ] && varValue=""
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[ -n "$doNumber" ] && varValue=`echo $varValue | tr -d -c "0-9"`
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[ -n "$doPipe" ] && varValue=`echo $varValue | tr "/" "|"`
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[ -z "$varValue" ] && varValue="$varDefault"
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echo "$varValue"
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exit 0
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