new check: check http via curl

check_http_curl

@@ -0,0 +1,105 @@
+#!/bin/bash
+
+# nagios exit codes
+STATE_OK=0
+STATE_WARNING=1
+STATE_CRITICAL=2
+
+# initicial curl parameters
+CURL_PARAM=""
+
+# http code expected for return code 0
+CURL_EXPECTED="200"
+
+# little help function
+show_help() {
+  cat >&2 << EOF
+check_http_curl v0.0.1
+Copyright (c) 2013 Moritz Rudert <helios@planetcyborg.de>
+
+Usage:
+$0 -u <uri> [-a auth] [-t <timeout>] [-e <expect>] [-4|-6]
+
+Options:
+ -h
+  Print detailed help screen
+ -4
+  Use IPv4 connection
+ -6
+  Use IPv6 connection
+ -e STRING
+  expected statuscode for exit 0
+ -u <uri>
+  URL to GET
+ -a AUTH_PAIR
+  Username:password on sites with authentication
+ -A STRING
+  String to be sent in http header as "User Agent"
+EOF
+
+  [ -n "$1" ] && { echo >&2; echo "$1" >&2; }
+
+  exit 1
+}
+
+# parsing commandline parameters
+while getopts ":a:u:e:h46A:" opt; do
+  case $opt in
+    a)
+      CURL_PARAM="$CURL_PARAM --anyauth -u $OPTARG"
+    ;;
+    u)
+      CURL_URL="$OPTARG"
+    ;;
+    e)
+      CURL_EXPECTED="$OPTARG"
+    ;;
+    h)
+      show_help
+    ;;
+    4)
+      CURL_PARAM="$CURL_PARAM -4"
+    ;;
+    6)
+      CURL_PARAM="$CURL_PARAM -6"
+    ;;
+    A)
+      CURL_PARAM="$CURL_PARAM -A $OPTARG"
+    ;;
+    \?)
+      show_help "Invalid option: -$OPTARG"
+    ;;
+    :)
+      show_help "Option -$OPTARG requires an argument."
+    ;;
+  esac
+done
+
+# if no URL to test specified, show help and exit
+[ -z "$CURL_URL" ] && show_help "No URL defined!"
+[ -x "$(which curl)" ] || show_help "curl not found!"
+
+# curl magic
+CURL_OUTPUT=($(curl -sSqm 10 -w "%{http_code}\\n%{size_download}\\n%{time_total}\\n" $CURL_PARAM "$CURL_URL" -o /dev/null --stderr -))
+
+# if curl exited unexpected
+if [ $? -ne 0 ]; then
+  # unset unneeded elements of array
+  for i in $(seq 0 3); do
+    unset -v CURL_OUTPUT[$i]
+  done
+
+  echo "${CURL_OUTPUT[@]}"
+  exit $STATE_CRITICAL
+fi
+
+# output
+echo "${CURL_OUTPUT[0]} - ${CURL_OUTPUT[1]} bytes in ${CURL_OUTPUT[2]} seconds response time"
+# HTTP WARNING: HTTP/1.1 401 Authorization Required - 734 bytes in 0.034 second response time |time=0.034063s;;;0.000000 size=734B;;;0
+
+# ...and exit code
+if [ "${CURL_OUTPUT[0]}" = "$CURL_EXPECTED" ]; then
+  exit $STATE_OK
+else
+  exit $STATE_WARNING
+fi