mirror of
https://github.com/rootzoll/raspiblitz.git
synced 2025-02-25 15:10:38 +01:00
85 lines
No EOL
3.1 KiB
Bash
Executable file
85 lines
No EOL
3.1 KiB
Bash
Executable file
#!/bin/bash
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# command info
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if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ]; then
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echo "config script to set a the DNS server that should be used"
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echo "internet.dns.sh [DNS-SERVER|test]"
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exit 1
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fi
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# 1. parameter
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DNSSERVER="$1"
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# 2. parameter
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NODIALOG="$2"
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# just if auto reboot is needed after dialog
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autoreboot=0
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# run test if DNS is working (assuming that internet is working)
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if [ "${DNSSERVER}" = "test" ]; then
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dnsworking=$(host w3c.org | grep -c "w3c.org has address")
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# when no dialog just return result of test and exit
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if [ "${NODIALOG}" = "nodialog" ] || [ ${dnsworking} -eq 1 ]; then
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echo "dnsworking=${dnsworking}"
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exit 0
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fi
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# dns is not working --> ask in dialog to set a preset DNS
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whiptail --title ' DNS Test Failed ' --yes-button='Set DNS 1.1.1.1' --no-button='Ignore' --yesno "It looks like your DNS within local network is not working.\n
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Do you want to set the fixed DNS 1.1.1.1 by Cloudflare (they claim they provide privacy) for your RaspiBlitz and reboot?\n
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" 10 64
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if [ $? -eq 0 ]; then
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echo "# SETTING 1.1.1.1"
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DNSSERVER="1.1.1.1"
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autoreboot=1
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else
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echo "# Ignoring DNS-Test fail"
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fi
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fi
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echo "The DNS server you want to set is: ${DNSSERVER}"
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# checking parameter
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if [[ $DNSSERVER =~ ^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$ ]]; then
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echo "# OK IPv6"
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elif [[ $DNSSERVER =~ ^([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.([0-9]{1,2}|1[0-9][0-9]|2[0-4][0-9]|25[0-5])$ ]]; then
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echo "# OK IPv4"
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else
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echo "error='not an IPv4 or IPv6 address'"
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exit 1
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fi
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echo ""
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dnsconfFile="/etc/dhcpcd.conf"
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isUbuntu=$(cat /etc/os-release 2>/dev/null | grep -c 'Ubuntu')
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if [ ${isUbuntu} -gt 0 ]; then
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echo "# adapting dhcpd.conf path for ubuntu"
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dnsconfFile="/etc/dhcp/dhcpd.conf"
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fi
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# setting DNS address
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echo "# Setting DNS server in /etc/dhcpcd.conf ..."
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sudo sed -i "s/^static domain_name_servers=.*/static domain_name_servers=${DNSSERVER}/g" /etc/dhcpcd.conf
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echo "# OK"
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echo ""
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# make sure entry in raspiblitz.conf exists
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source /mnt/hdd/raspiblitz.conf
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if [ ${#dnsServer} -eq 0 ]; then
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echo "# Adding value to /mnt/hdd/raspiblitz.conf"
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echo "dnsServer=${DNSSERVER}" >> /mnt/hdd/raspiblitz.conf
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else
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echo "# Updating value in /mnt/hdd/raspiblitz.conf"
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sudo sed -i "s/^dnsServer=.*/dnsServer=${DNSSERVER}/g" /mnt/hdd/raspiblitz.conf
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fi
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echo "# OK"
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echo ""
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echo "# DNS Server is set - needs reboot to get active"
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if [ ${autoreboot} -eq 1 ]; then
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sudo shutdown -r now
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fi |