discoverDevice.bsh

#!/bin/bash
# -------------------------------------------------
#
#   discoverDevice.bsh - Performs some checks of
#   the system to see what has been preinstalled
#   what's currently configured.
#
#           Written: James Varoutsos
#       Date: 20-Sep-2021        Version: 1.0
#
#   1.0 - Initial
#
#   Useage:
#		buildInitial.bsh
#
# -------------------------------------------------

export ifc="\033[1;33m"     # Information color
export clc="\033[0m"        # Clear color

# Load the standard buildFunctions
source scriptFunctions || { echo -e "\033[1;31m[ERROR]\033[0m Cannot load buildFunctions"; exit 1; }
checkDependency swapon curl dig || { echo -e "${er} Dependancies not met"; exit 1; }

# CPU Details
if command -v lscpu &> /dev/null; then
    echo -e "${nt} CPU details" && lscpu | head -n -1  # The better method
else
    cat /proc/cpuinfo # The fallback method
fi

# Memory
function memInfo { free -hm | tail -n +2 | grep ^"$1" | tr -s ' ' | cut -d ' ' -f "$2"; }

# Swap Details
if ! swapon --noheadings &> /dev/null; then
    echo -e "${wn} No swap is currently active"
else
    echo -ne "${gd} Swap is active \033[1;33m$(memInfo Swap 3)\033[0m"
    echo -ne " in use of \033[1;33m$(memInfo Swap 2)\033[0m at path ${ifc}"
    swapon --noheadings | tail -n +1 | cut -d ' ' -f 1
fi

# RAM summary
echo -ne "${nt} Device has \033[1;33m$(memInfo Mem 2)\033[0m total"
echo -e " physical memory with \033[1;33m$(memInfo Mem 7)\033[0m free"

# Storage check -- Rewrite the below
# echo -e "${nt} Displaying physical drive locations" && lsblk -Sl
# echo -e "${nt} Displaying drive & partition paths & mappings" && lsblk -p

echo -e "${nt} Show fileystem capacities" && df -hx tmpfs -x devtmpfs

# OS listing
function infoDate { uptime -s | date +"${dfmt}"; }
source /etc/os-release
echo -ne "${nt} Running operating system \033[${ANSI_COLOR}m$PRETTY_NAME\033[0m"
echo -e " and online since ${ifc}$(infoDate)${clc}"

# Network checks
function ipRoute { ip route show | head -n 1 | cut -d ' ' -f "$1"; }
echo -e "${nt} Default route will use interface ${ifc}$(ipRoute 5)${clc} using address ${ifc}$(ipRoute 3)${clc}"
checkDependency ifconfig && \
    { echo -e "${nt} Listing all available network interfaces below"; ifconfig | head -n -1; }

checkUrl="http://checkip.dyndns.com/"
checkIp="1.1.1.1"

if ping -c 5 "$checkIp" &> /dev/null; then  # Ping Test
    dnsCheck="$(dig -x $checkIp +short)"
    echo -e "${gd} Internet accessible, ICMP response from $checkIp"
    if [ -z $dnsCheck ]; then   # DNS Test
        echo -e "${er} DNS does not resolve (Queried: $checkIp)"
    else
        echo -e "${gd} DNS accessible, DNS resolved $checkIp ($dnsCheck)"
        wanIP=$(curl -s $checkUrl | grep -oE "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}")
        wanZone=$(dig -x $wanIP +short | sed 's/.$//')
        echo -e "${wn} WAN address \033[1;33m$wanIP ($wanZone)\033[0m"
    fi
else
    echo -e "${er} No internet, No ICMP response from $checkIp"
fi

# Systemd resolvd warning / cautionary tale
nameServ=$(grep nameserver /etc/resolv.conf | cut -d ' ' -f 2)
if [ "$nameServ" == "127.0.0.53" ]; then
    echo -e "${wn} Systemd resolvd is running"
fi

# Firewall status
if ! checkDependency firewalld && command -v systemctl is-active firewalld &> /dev/null; then
    echo -e "${wn} firewalld is inactive"
    if command -v systemctl is-active iptables &> /dev/null; then
        echo -e "${wn} Iptables is inactive - No active local firewall"
    else
        echo -e "${wn} Iptables is active - Displaying current ruleset"
        # iptables
    fi
else
    echo -e "${gd} firewalld is active - Displaying current ruleset"
    # firewalld
fi

# SELinux check -- Needs to be cleaned up
if checkDependency sestatus; then
    seStatus="$(sestatus | sed -n '1p' | tr -s ' ' | cut -d ' ' -f 2)"
    seMode="$(sestatus | sed -n '5p' | tr -s ' ' | cut -d ' ' -f 3)"

    if [ "$seStatus" == "disabled" ]; then
        echo -e "${wn} SELinux is currently disabled"
    else
        if [ "$seMode" == "enforcing" ]; then
            echo -e "${gd} SELinux is active & in enforcing mode"
        else
            echo -e "${wn} SELinux is active but not enforcing"
        fi
    fi
fi