Delete curl.sh

agents/plugins/curl.sh

-#!/bin/bash
-#
-# Author: thl-cmk[at]outlook[dot]com
-# URL   : https://thl-cmk.hopto.org
-# Date  : 2022-02-20
-#
-# Wrapper around: https://curl.se/
-#
-# curl plugin for the check_mk linux agent
-#
-# 2022-02-21: added curl_option to the output
-# 2022-02-24: changed to use -w %{json} instead of -w @$curl.format
-#             extended search for curl executable to agent dir
-# 2022-02-25: removed separate url and error_level from output
-# 2022-02-27: added support to search for strings in cURL output
-# 2022-03-03: fixed handling of spaces in options string
-# 2022-03-05: added support for search in header strings
-# 2022-03-06: added support for ssl/tls session info
-# 2022-03-11: added --verbose --stderr $TEMP_DIR/curl_session to CURL_OPTIONS
-# 2022-03-13: moved curl_item files to curl sub directory under $MK_CONFDIR
-# 2022-03-15: moved curl options from curl.cfg to curl_item_#.options
-# 2022-03-17: added regex pattern match
-#
-
-# ToDo: add plugin timeout enforcement
-
-CONF_DIR="/etc/check_mk"
-LIB_DIR="/usr/lib/check_mk_agent"
-TEMP_DIR="/var/tmp"
-
-CURL_OPTIONS="--disable --write-out %{json} --silent --verbose --include --stderr $TEMP_DIR/curl_session"
-CURL_CONFIG=curl.cfg
-CURL_RUN="FIRST"
-CURL_OUTPUT="$TEMP_DIR/curl_output"
-CURL_HEADER="$TEMP_DIR/curl_header"
-CURL_SESSION_FILE="$TEMP_DIR/curl_session"
-CURL_RESULT=""
-
-function find_curl_strings {
-    # usage: search_strings file_to_search_in extension_for_file_with_search_strings json_key
-    # check for expected strings in response
-    if [ -f "$1" ]; then
-      if [ -f "$CONF_DIR/curl/$CURL_ITEM.$2" ]; then
-        local ROUND="FIRST"
-        CURL_RESULT=$CURL_RESULT$(printf '{"%s":{"%s":[' "$SERVICE_NAME" "$3")
-        while read -r LINE; do
-          if [ "$ROUND" = "SECOND" ]; then
-            CURL_RESULT=$CURL_RESULT$(printf ',')
-          else
-            ROUND="SECOND"
-          fi
-          # ToDo: remove grep, read $CURL_OUTPUT to $CURL_FILE and search in there
-          grep -q -s "$LINE" "$1"
-          CURL_RESULT=$CURL_RESULT$(printf '["%s", %s]' "$LINE" $?)
-        done <"$CONF_DIR/curl/$CURL_ITEM.$2"
-        CURL_RESULT=$CURL_RESULT$(printf ']}}')
-      fi
-      # rm "$1"
-    fi
-}
-
-function find_curl_session_info {
-    # usage:  search_marker json_key replace_new_line
-    if [ -f "$CURL_SESSION_FILE" ]; then
-        CURL_RESULT="$CURL_RESULT"$(printf '{"%s":{"%s":[' "$SERVICE_NAME" "$2")
-        local ROUND="FIRST"
-        while read -r LINE; do
-          if [ "${LINE:0:1}" = "$1" ]; then
-            if [ "$ROUND" = "SECOND" ]; then
-              CURL_RESULT=$CURL_RESULT$(printf ',')
-            else
-              ROUND="SECOND"
-            fi
-            LINE=${LINE//"\""/"\\\""}
-            if [ "$3" = "YES" ]; then
-              local NEW_LINE
-              NEW_LINE=$(printf '"%s"' "${LINE:1:${#LINE}-2}")
-              CURL_RESULT="$CURL_RESULT$NEW_LINE"
-            else
-              CURL_RESULT=$CURL_RESULT$(printf '"%s"' "${LINE:1}")
-            fi
-          fi
-        done <"$CURL_SESSION_FILE"
-        CURL_RESULT="$CURL_RESULT]}}"
-        # rm "$CURL_SESSION_FILE"
-    fi
-}
-
-
-function find_curl_regex {
-    local GREP_OPTIONS="-q -s -o -z -P"
-    if [ -f "$CURL_OUTPUT" ]; then
-        if [ -f "$CONF_DIR/curl/$CURL_ITEM.regex" ]; then
-          if [ "$CURL_REG_MULTI" = "multiline" ]; then
-            CURL_REG_MULTI="(?sm)"
-          else
-            CURL_REG_MULTI=""
-          fi
-          while read -r LINE; do
-            if [ "$CURL_REG_CASE" = "case" ]; then
-              LINE="'$CURL_REG_MULTI$LINE'"
-              eval grep $GREP_OPTIONS $LINE "$CURL_OUTPUT"
-              CURL_REG_RESULT=$?
-            else
-              GREP_OPTIONS="$GREP_OPTIONS"" -i"
-              LINE="'$CURL_REG_MULTI$LINE'"
-              eval grep $GREP_OPTIONS $LINE $CURL_OUTPUT
-              CURL_REG_RESULT=$?
-            fi
-            CURL_RESULT=$CURL_RESULT$(printf '{"%s":{"regex":%s}}' "$SERVICE_NAME" "$CURL_REG_RESULT")
-          done < "$CONF_DIR/curl/$CURL_ITEM.regex"
-        fi
-    fi
-}
-
-function cleanup {
-    if [ -f "$CURL_OUTPUT" ]; then
-        rm "$CURL_OUTPUT"
-    fi
-
-    if [ -f "$CURL_HEADER" ]; then
-        rm "$CURL_HEADER"
-    fi
-
-    if [ -f "$CURL_SESSION_FILE" ]; then
-        rm "$CURL_SESSION_FILE"
-    fi
-}
-
-printf "<<<curl:sep(0)>>>\n"
-
-if [ -f "$MK_LIBDIR/bin/curl" ]; then
-    CURL_EXECUTABLE=$MK_LIBDIR/bin/curl
-elif [ -f "$LIB_DIR/bin/curl" ]; then
-    CURL_EXECUTABLE=$LIB_DIR/bin/curl
-elif [ -f "$(which curl)" ]; then
-    CURL_EXECUTABLE=$(which curl)
-else
-    printf '{"ERROR":"executable file curl not found"}\n'
-    exit
-fi
-
-if [ -f "$MK_CONFDIR/$CURL_CONFIG" ]; then
-    CURL_CONFIG=$MK_CONFDIR/$CURL_CONFIG
-    CONF_DIR="$MK_CONFDIR"
-elif [ -f "$CONF_DIR/$CURL_CONFIG"   ]; then
-    CURL_CONFIG=$CONF_DIR/$CURL_CONFIG
-else
-  printf '{"ERROR":"config file %s not found"}\n' "$CURL_CONFIG"
-  exit
-fi
-
-# start JSON
-printf "{"
-
-while read -r LINE; do
-    SERVICE_NAME=$(echo "$LINE" | awk -F'|' '{print $1}')
-    CURL_ITEM=$(echo "$LINE" | awk -F'|' '{print $2}')
-    CURL_REGEX=$(echo "$LINE" | awk -F'|' '{print $3}')
-    CURL_REG_CASE=$(echo "$CURL_REGEX" | awk -F'_' '{print $1}')
-    CURL_REG_MULTI=$(echo "$CURL_REGEX" | awk -F'_' '{print $2}')
-
-    # FIELDS=($(awk -F"|" '{$1=$1} 1' <<<"${LINE}"))
-
-    if [ "$CURL_RUN" = "SECOND" ]; then
-      printf ','
-    else
-      CURL_RUN="SECOND"
-    fi
-
-    cleanup
-
-    printf '"%s":{"data":' "$SERVICE_NAME"
-    eval "$CURL_EXECUTABLE" "$CURL_OPTIONS" --config "$CONF_DIR/curl/$CURL_ITEM.options"
-    printf '}'
-
-    # check for expected strings in response
-    find_curl_strings "$CURL_OUTPUT" "search_response" "expected_response"
-    # check for expected strings in headers
-    find_curl_strings "$CURL_HEADER" "search_header" "expected_header"
-
-    # retrieve SSL/TLS session info
-    find_curl_session_info "*" "TLS_INFO" "NO"
-
-    # retrieve request header
-    find_curl_session_info ">" "REQUEST_HEADER" "YES"
-
-    # retrieve response header
-    find_curl_session_info "<" "RESPONSE_HEADER" "YES"
-
-    # check for regex match
-    find_curl_regex
-
-done <"$CURL_CONFIG"
-
-printf "}\n"
-# end JSON
-
-echo "$CURL_RESULT"
-
-# clean up
-cleanup
-
-unset CONF_DIR
-unset LIB_DIR
-unset CURL_EXECUTABLE
-unset CURL_FORMAT
-unset CURL_CONFIG
-unset CURL_OPTIONS
-unset CURL_RUN
-unset CURL_OUTPUT
-unset CURL_HEADER
-unset CURL_SESSION_FILE
-unset SERVICE_NAME
-unset URL
-unset CURL_REG_CASE
-unset CURL_REG_MULTI
-
-exit 0