pirds_webcgi.script.obs

#! /bin/bash

#####################
# bash based cig script to generate json data for viewing
#
# Written by Geoff Mulligan @2020
#####################


if [[ $REQUEST_URI == / ]] ;then
    echo "Content-type: text/html"
    echo "Access-Control-Allow-Origin: *"
    echo ""
    ls 0Logfile.* | sed 's/0Logfile.//' | while read line ;do
	echo "$line -- <a href=/$line>raw</a> / <a href=/$line/json>json</a> / <a href=/breath_plot?i=$line>Breath Plot</a><br>"
    done
    exit
fi

uri=${REQUEST_URI%\?*}
uri=${uri#*/}
ipaddr=${uri%/*}
json=${uri##*/}

if [[ $json != json && $json != $ipaddr ]] ;then
    echo "Content-type: text/plain"
    echo "Access-Control-Allow-Origin: *"
    echo ""
    echo "Bad Request"
fi

if test -s 0Logfile.$ipaddr ;then
:
else
    echo "Content-type: text/plain"
    echo "Access-Control-Allow-Origin: *"
    echo ""
    echo "No such record"
    exit
fi

if [[ $json == json ]] ;then
    echo "Content-type: application/json"
else
    echo "Content-type: text/plain"
fi
echo "Access-Control-Allow-Origin: *"
echo ""

nlines=$(cat 0Logfile.$ipaddr | wc -l)

# This is now obsolete...it doesn't support the full PIRDS standard  (such as E/M Event/Message types)
if [[ $QUERY_STRING ]] ;then
    if [[ $QUERY_STRING =~ "n=" ]] ;then
	num=${QUERY_STRING#*n=}
	if [[ $json == json ]] ;then
	    [[ $num -gt 1 && $nlines -gt 1 ]] && echo "["
	    IFS=:
	    first=1
	    tail -n $num 0Logfile.$ipaddr | while read t a b c d e ;do
		[[ $first ]] || echo ","
		first=""
		echo -n "{ \"event\": \"M\", \"type\": \"$a\", \"loc\": \"$b\", \"num\": $c, \"ms\": $d, \"val\": $e }"
	    done
	    echo ""
	    [[ $num -gt 1 && $nlines -gt 1 ]] && echo "]"
	else
	    tail -n $num 0Logfile.$ipaddr | cut -d: -f2-
	fi
    else
	echo bad query
    fi
else
    if [[ $json == json ]] ;then
	[[ $nlines -gt 1 ]] && echo "["
	IFS=:
	first=1
	cat 0Logfile.$ipaddr | while read t a b c d e ;do
	    [[ $first ]] || echo ","
	    first=""
	    echo -n "{ \"event\": \"M\", \"type\": \"$a\", \"loc\": \"$b\", \"num\": $c, \"ms\": $d, \"val\": $e }"
	done
	echo ""
	[[ $nlines -gt 1 ]] && echo "]"
    else
	cat 0Logfile.$ipaddr | cut -d: -f2-
    fi
fi
exit

printenv
echo ----
set