pidscan.sh for minisatip boxes

#!/bin/bash
OLDIFS="${IFS}"
TIMEOUT=10
HOST="192.168.11.77"
SRC=1
FREQ=12000
POL="V"
SYS="DVBS"
RATE=20000
DEFAULT_PIDS="1,16,17,18,20,21,8191"

if [ ! -z "${*}" ]; then
    while [ "${1:0:1}" == "-" ]; do
        case "${1}" in
            "-t"|"--timeout")
                TIMEOUT="${2}"
                shift 2;
                ;;
            "-h"|"--host")
                HOST="${2}"
                shift 2;
                ;;
            "-s"|"--src"|"--source")
                SRC="${2}"
                shift 2;
                ;;
            "-f"|"--freq"|"--frequency")
                FREQ="${2}"
                shift 2;
                ;;
            "-p"|"--pol"|"--polarity")
                POL="${2}"
                shift 2;
                ;;
            "-sys"|"--sys"|"--system")
                SYS="${2}"
                shift 2;
                ;;
            "-sr"|"--symbol-rate")
                RATE="${2}"
                shift 2;
                ;;
            *)
                echo "Help for ${0}:"
                echo ""
                echo "-t    --timeout       .. (int) Seconds to wait for data from a PID (Def: ${TIMEOUT})"
                echo "-s    --src, --source     .. (int) DiSEqC Source"
                echo "-f    --freq, --frequency     .. (int) Transponder Frequency"
                echo "-p    --pol, --polarity   .. [H,V,L,R] LNB Polarization"
                echo "-s    --sys, --system     .. [DVBS,DVBS2] DVB System Type"
                echo "-sr   --symbol-rate       .. (int) Transponder Symbol Rate"
                echo ""
                echo "By default, the tool will search for the following PIDS:"
                echo "${DEFAULT_PIDS}"
                echo "You can specify a set of PIDs like above, or a range"
                echo "such as 7400-7600. To scan a generated range of PIDs"
                echo "you can specify a PID with a + sign, eg +7500, and the tool"
                echo "will search for 7500-7530"
                exit 1;
                ;;
        esac
    done
fi



FOUNDPIDS=();


URL="http://${HOST}:8080/?src=1${SRC}&freq=${FREQ}&pol=${POL}&msys=${SYS}&sr=${RATE}&pids="
TESTFILE="/mnt/d/test.ts"

scanpid() {
    if [ -f "${TESTFILE}" ]; then
        rm "${TESTFILE}"
        touch "${TESTFILE}"
    fi
    echo "Scanning PID(s) on ${FREQ}${POL} @ ${RATE}sym/s (waiting up to ${TIMEOUT} seconds): ${1}... "
    #curl --silent "${URL}${1}" --connect-timeout ${TIMEOUT} --max-time ${TIMEOUT} --max-filesize 1k -o "${TESTFILE}"
    wget -q --show-progress --tries=1 --timeout ${TIMEOUT} -O - "${URL}${1}" | dd of=${TESTFILE} iflag=fullblock bs=512 count=1 2>/dev/null
    RES=$?
    return ${RES}
}

runmain() {
    scanpid "${1}"
    local RES=$?
    if [ ${RES} -eq 0 ]; then
        local SIZE=$(stat --printf "%s" "${TESTFILE}");
        if [ ${SIZE} -gt 0 ]; then
            if [ $(echo "${1}" | grep -c "\,") -eq 0 ]; then
                FOUNDPIDS+=(${1})
                echo "Data detected on PID ${1}!"
            else
                local PIDA=($(echo "${1}" | tr ',' ' '));
                local PIDC=${#PIDA[@]};
                local PIDL=$(echo ${PIDC} | awk '{print int($1/2)}')
                local PID1=""
                local PID2=""
                for f in $(seq 0 $((PIDL - 1))); do
                    PID1+="${PIDA[${f}]},"
                done
                for f in $(seq ${PIDL} $((PIDC - 1))); do
                    PID2+="${PIDA[${f}]},"
                done
                echo ""
                runmain "${PID1::-1}"
                runmain "${PID2::-1}"
#               OLDIFS="${IFS}"
#               IFS=$'\n'
#               for f in $(echo "${PIDS}" | tr ',' '\n'); do
#                   runmain "${f}";
#               done
#               IFS="${OLDIFS}"
            fi
        else
            echo ""
        fi
    else
        echo ""
    fi
}

if [ ! -z "${1}" ]; then
    if [ $(echo "${1}" | grep "\," -c) -gt 0 ]; then
        PIDS="${1}"
    else
        MINPID=${1}
        if [ "${MINPID:0:1}" == "+" ]; then
            PIDS=$(seq -s"," ${MINPID} $((MINPID+30)))
        elif [ $(echo "${MINPID}" | grep -c "\-") -gt 0 ]; then
            MAXPID=$(echo "${MINPID}" | cut -d'-' -f2)
            MINPID=$(echo "${MINPID}" | cut -d'-' -f1)
            RANGE="${MINPID} - ${MAXPID}"
            echo "Scanning range: ${RANGE}"
            MAX30PID=${MINPID}
            while [ ${MINPID} -le ${MAXPID} ]; do
                MAX30PID=$((MINPID + 30))
                if [ ${MAX30PID} -gt ${MAXPID} ]; then
                        MAX30PID=${MAXPID}
                fi
                PIDS=$(seq -s"," ${MINPID} ${MAX30PID})
                MINPID=$((MAX30PID + 1))
                runmain "${PIDS}"
            done
            unset PIDS
        elif [ ${MINPID} -gt 0 ]; then
            PIDS="$(echo "${MINPID}" | sed "s|+||")"
        else
            echo "Usage: ${0} [pid|pids]"
            exit 1;
        fi
    fi
else
    PIDS="${DEFAULT_PIDS}"
fi

if [ ! -z "${PIDS}" ]; then
    runmain "${PIDS}"
fi

if [ ${#FOUNDPIDS[@]} -gt 0 ]; then
    echo "Found PIDS: ${FOUNDPIDS[*]}"
else
    if [ -z "${RANGE}" ]; then
        echo "Did not find any PIDs (Searched: ${PIDS})"
    else
        echo "Did not find any PIDs (Searched PID range: ${RANGE})"
    fi
fi