115 lines
2.4 KiB
Bash
115 lines
2.4 KiB
Bash
#!/bin/bash
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# Define the usage message
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usage() {
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echo "Usage: $0 -u <url> [-w <warning>] [-c <critical>]"
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exit 3
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}
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# Parse the command-line arguments
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while getopts "u:w:c:C:H:R:LhIp" opt; do
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case $opt in
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u)
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URL=$OPTARG
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;;
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w)
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WARNING_LEVEL=$OPTARG
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;;
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c)
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CRITICAL_LEVEL=$OPTARG
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;;
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L)
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FOLLOW_REDIRECTS="-L"
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;;
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C)
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CONTAINS=$OPTARG
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;;
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I)
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INSECURE="--insecure"
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;;
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H)
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HEADERS=$OPTARG
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;;
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p)
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PRINT_ONLY=true
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;;
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R)
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RESOLVE="--resolve $OPTARG"
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;;
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h)
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usage
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;;
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*)
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usage
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;;
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esac
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done
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WARNING_LEVEL=${WARNING_LEVEL:-1}
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CRITICAL_LEVEL=${CRITICAL_LEVEL:-2}
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#FOLLOW_REDIRECTS=${FOLLOW_REDIRECTS:-""}
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if [ -z "$URL" ]; then
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usage
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fi
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HEADER_ARGS=""
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IFS=',' read -ra values <<<"$HEADERS"
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for value in "${values[@]}"; do
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HEADER_ARGS+="-H '$value'"
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done
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CURL_CMD="-s -w '%{http_code}\n%{time_total}' $HEADER_ARGS $FOLLOW_REDIRECTS $INSECURE $RESOLVE $URL"
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if $PRINT_ONLY; then
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echo "curl $CURL_CMD"
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exit 3
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fi
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TMP_ERROR_LOG=$(mktemp)
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TMP_RESPONSE=$(mktemp)
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RESPONSE=$(curl -v -o "$TMP_RESPONSE" "$CURL_CMD" 2>"$TMP_ERROR_LOG")
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# shellcheck disable=SC2181
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if [ $? -ne 0 ]; then
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echo "CRITICAL: curl failed!"
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echo "Error log:"
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cat "$TMP_ERROR_LOG"
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exit 2
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fi
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rm -rf "$TMP_ERROR_LOG"
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RESPONSE_CODE=$(echo "$RESPONSE" | head -n 1)
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RESPONSE_TIME=$(printf "%.2f" "$(echo "$RESPONSE" | tail -n 1)")
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OUTPUT_MSG=""
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OUTPUT_CODE=0
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if [ $RESPONSE_CODE -eq 200 ] && [ "$(echo "$RESPONSE_TIME < $CRITICAL_LEVEL" | bc -l)" -eq 1 ]; then
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OUTPUT_MSG="OK: website is up and responded in $RESPONSE_TIME seconds."
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elif [ $RESPONSE_CODE -eq 200 ] && [ "$(echo "$RESPONSE_TIME < $WARNING_LEVEL" | bc -l)" -eq 1 ]; then
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OUTPUT_MSG="WARNING: response time is slow ($RESPONSE_TIME seconds)."
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OUTPUT_CODE=1
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elif [ $RESPONSE_CODE -eq 200 ]; then
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OUTPUT_MSG"CRITICAL: response time is very slow ($RESPONSE_TIME seconds)."
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OUTPUT_CODE=2
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else
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OUTPUT_MSG="CRITICAL: website is not responding, returned $RESPONSE_CODE code."
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OUTPUT_CODE=2
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fi
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if [ ! -z ${CONTAINS+x} ]; then
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if ! grep -q "$CONTAINS" "$TMP_RESPONSE"; then
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OUTPUT_MSG+="\nCRITICAL: response did not contain required string!\nFound: $(cat "$TMP_RESPONSE")"
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OUTPUT_CODE=2
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else
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OUTPUT_MSG+="\nOK: response contained required string."
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fi
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fi
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rm -rf "$TMP_RESPONSE"
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OUTPUT_MSG+=" | response_time=${RESPONSE_TIME}s;$WARNING_LEVEL;$CRITICAL_LEVEL;0"
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echo -e "$OUTPUT_MSG"
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exit $OUTPUT_CODE
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