[macOS] Yota Mobile Access Full v1.0

#!/bin/sh
#by Lizard, from osxpc.ru team
#Yota Mobile Access.sh
#Version: "1.0 full"

#Value for you edit:
macttl=64  #macOS     (recovery default value)
iosttl=65  #iOS       (for Instant hotspot, Wi-Fi hotspot and USB connection)
andttl=65  #Android   (for Wi-Fi hotspot and USB connection)
wphttl=129 #Win Phone (for Wi-Fi hotspot)
#All done.

#Dosen't change code below this comment.
sw0=$(sw_vers -productName)
sw1=$(sw_vers -productVersion)
sw2=$(sw_vers -buildVersion)
reset
echo =========================================================
echo Yota Mobile Access.sh
echo =========================================================
echo
echo Version     : "1.0 full"
echo Supported   : "macOS, iOS, Android, Windows Phone, and custom value."
echo System      : "$sw0 $sw1 $sw2"
echo
echo Description : "If your provider blocked Wi-Fi or USB hotspot on device, you can try this soliution."
echo "This script increase TTL value for your device, and Internet provider doesn't understand that connection is going outside the device."
echo
echo =======================================================
echo
ttl0=$(sysctl net.inet.ip.ttl | cut -c 18-)
if [ $ttl0 = '64' ]; then
        echo "Current TTL = 64. This TTL value is default value for macOS."
fi
if [ $ttl0 = '65' ]; then
        echo "Current TTL = 65. This TTL value is a good choice for iOS and Android."
        echo "Do you want continue anyway? [y/n]: \c"
        read anyway
        if [ $anyway = 'n' ]; then
            echo
            echo Aborting...
            echo
            sleep 1.5
            echo =========================================================
            echo All done. Have a nice day!
            echo
            echo Always for you, osxpc.ru team.
            echo =========================================================
            echo
            echo "Close this session in 10 seconds..."
            sleep 10
            echo
            exit
        fi
fi
if [ $ttl0 = '129' ]; then
        echo "Current TTL = 129. This TTL value is a good choice for Windows Phone."
        echo "Do you want continue anyway? [y/n]: \c"
        read anyway
        if [ $anyway = 'n' ]; then
            echo
            echo Aborting...
            echo
            sleep 1.5
            echo =========================================================
            echo All done. Have a nice day!
            echo
            echo Always for you, osxpc.ru team.
            echo =========================================================
            echo
            echo "Close this session in 10 seconds..."
            sleep 10
            echo
            exit
        fi
fi
if [ $ttl0 != '64' ]; then
    if [ $ttl0 != '65' ]; then
        if [ $ttl0 != '129' ]; then
            if [ $ttl0 -lt 64 ]; then
                echo "!!!"
                echo "Current TTL = $ttl0. This TTL value has nothing to do with anything, but it needs to be increased minimal to 64 (and greater)."
                echo "!!!"
            fi
            if [ $ttl0 -gt 64 ]; then
                echo "Current TTL = $ttl0. This TTL value has nothing to do with anything, but it does not require any changes."
                echo "Do you want continue anyway? [y/n]: \c"
                read anyway
                if [ $anyway = 'n' ]; then
                    echo
                    echo Aborting...
                    echo
                    sleep 1.5
                    echo =========================================================
                    echo All done. Have a nice day!
                    echo
                    echo Always for you, osxpc.ru team.
                    echo =========================================================
                    echo
                    echo "Close this session in 10 seconds..."
                    sleep 10
                    echo
                    exit
                fi
            fi

        fi
    fi
fi
echo
echo =======================================================
echo
echo "Supported Platforms:"
echo
echo "0 — macOS       (recovery default value)"
echo "1 — iOS         (for Instant hotspot, Wi-Fi hotspot and USB connection)"
echo "2 — Android     (for Wi-Fi hotspot and USB connection)"
echo "3 — Win Phone   (for Wi-Fi hotspot)"
echo "4 — Custom TTL  (for technical specialists or test)"
echo "5 — Abort       (just aborted executing this script)"
echo
echo "Enter number platform: \c"
read platform
if [ $platform = '0' ]; then
    echo Changed platform: macOS
fi
if [ $platform = '1' ]; then
    echo Changed platform: iOS
fi
if [ $platform = '2' ]; then
    echo Changed platform: Android
fi
if [ $platform = '3' ]; then
    echo Changed platform: Windows Phone
fi
if [ $platform = '4' ]; then
    echo Changed platform: Custom TTL
fi
if [ $platform = '5' ]; then
    echo
    echo Aborting...
    echo
    sleep 1.5
    echo =========================================================
    echo All done. Have a nice day!
    echo Reconnect your device and get Internet!
    echo
    echo Always for you, osxpc.ru team.
    echo =========================================================
    echo
    echo "Close this session in 10 seconds..."
    sleep 10
    echo
    exit
fi
echo
echo =========================================================
echo
if [ $platform = '0' ]; then
    echo "Set TTL value for macOS"
    sudo sysctl net.inet.ip.ttl=$macttl | cut -c 30-
    ttl1=$(sysctl net.inet.ip.ttl | cut -c 18-)
    if [ $ttl1 = $macttl ]; then
            echo "Success! Now TTL = $ttl1"
        else
            echo "Error. TTL doesn't changed."
    fi
fi
if [ $platform = '1' ]; then
    echo "Set TTL value for iOS"
    sudo sysctl net.inet.ip.ttl=$iosttl | cut -c 30-
    ttl1=$(sysctl net.inet.ip.ttl | cut -c 18-)
    if [ $ttl1 = $iosttl ];
        then
            echo "Success! Now TTL = $ttl1"
        else
            echo "Error. TTL doesn't changed."
    fi
fi
if [ $platform = '2' ]; then
    echo "Set TTL value for Android"
    sudo sysctl net.inet.ip.ttl=$andttl | cut -c 30-
    ttl1=$(sysctl net.inet.ip.ttl | cut -c 18-)
    if [ $ttl1 = $andttl ];
        then
            echo "Success! Now TTL = $ttl1"
        else
            echo "Error. TTL doesn't changed."
    fi
fi
if [ $platform = '3' ]; then
    echo "Set TTL value for Windows Phone"
    sudo sysctl net.inet.ip.ttl=$wphttl | cut -c 30-
    ttl1=$(sysctl net.inet.ip.ttl | cut -c 18-)
    if [ $ttl1 = $wphttl ];
        then
            echo "Success! Now TTL = $ttl1"
        else
            echo "Error. TTL doesn't changed."
    fi
fi
if [ $platform = '4' ]; then
    echo "What TTL value need assigning?"
    echo "Set TTL value = \c"
    read customttl
    sudo sysctl net.inet.ip.ttl=$customttl | cut -c 30-
    ttl1=$(sysctl net.inet.ip.ttl | cut -c 18-)
    if [ $ttl1 = $customttl ];
        then
            echo "Success! Now TTL = $ttl1"
        else
            echo "Error. TTL doesn't changed."
    fi
fi
echo
echo =========================================================
echo All done. Have a nice day!
echo Reconnect your device and get Internet!
echo
echo Always for you, osxpc.ru team.
echo =========================================================
echo
echo "Close this session in 10 seconds..."
sleep 10
echo
exit