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https://github.com/pi-hole/pi-hole
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break dhcpcd and ifcfg network configurations into separate functions
- move some logic from setStaticIPv4 to setDHCPCD - breakout ifcfg configuration into separate function which takes a config path as an argument - setStaticIPv4 now checks for configs and calls the appropriate function accordingly - add logic to check ifcfg file by _connection name_ if file is not found by _interface name_ Signed-off-by: bcambl <blayne@blaynecampbell.com>
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bcambl
parent
1f596eb2bc
commit
c0bc93c7c4
@ -776,77 +776,98 @@ It is also possible to use a DHCP reservation, but if you are going to do that,
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fi
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}
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# dhcpcd is very annoying,
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# configure networking via dhcpcd
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setDHCPCD() {
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# but we can append these lines to dhcpcd.conf to enable a static IP
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echo "interface ${PIHOLE_INTERFACE}
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static ip_address=${IPV4_ADDRESS}
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static routers=${IPv4gw}
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static domain_name_servers=127.0.0.1" | tee -a /etc/dhcpcd.conf >/dev/null
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# check if the IP is already in the file
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if grep -q "${IPV4_ADDRESS}" /etc/dhcpcd.conf; then
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printf " %b Static IP already configured\\n" "${INFO}"
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# If it's not,
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else
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# we can append these lines to dhcpcd.conf to enable a static IP
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echo "interface ${PIHOLE_INTERFACE}
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static ip_address=${IPV4_ADDRESS}
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static routers=${IPv4gw}
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static domain_name_servers=127.0.0.1" | tee -a /etc/dhcpcd.conf >/dev/null
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# Then use the ip command to immediately set the new address
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ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
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# Also give a warning that the user may need to reboot their system
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printf " %b Set IP address to %s \\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%/*}"
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fi
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}
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# configure networking ifcfg-xxxx file found at /etc/sysconfig/network-scripts/
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# this function requires the full path of an ifcfg file passed as an argument
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setIFCFG() {
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# Local, named variables
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local IFCFG_FILE
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local IPADDR
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local CIDR
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IFCFG_FILE=$1
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printf -v IPADDR "%s" "${IPV4_ADDRESS%%/*}"
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# check if the desired IP is already set
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if grep -Eq "${IPADDR}(\\b|\\/)" "${IFCFG_FILE}"; then
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printf " %b Static IP already configured\\n" "${INFO}"
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# Otherwise,
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else
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# Put the IP in variables without the CIDR notation
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printf -v CIDR "%s" "${IPV4_ADDRESS##*/}"
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# Backup existing interface configuration:
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cp "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
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# Build Interface configuration file using the GLOBAL variables we have
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{
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echo "# Configured via Pi-hole installer"
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echo "DEVICE=$PIHOLE_INTERFACE"
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echo "BOOTPROTO=none"
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echo "ONBOOT=yes"
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echo "IPADDR=$IPADDR"
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echo "PREFIX=$CIDR"
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echo "GATEWAY=$IPv4gw"
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echo "DNS1=$PIHOLE_DNS_1"
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echo "DNS2=$PIHOLE_DNS_2"
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echo "USERCTL=no"
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}> "${IFCFG_FILE}"
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# Use ip to immediately set the new address
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ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
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# If NetworkMangler command line interface exists and ready to mangle,
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if is_command nmcli && nmcli general status &> /dev/null; then
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# Tell NetworkManagler to read our new sysconfig file
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nmcli con load "${IFCFG_FILE}" > /dev/null
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fi
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# Show a warning that the user may need to restart
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printf " %b Set IP address to %s\\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%%/*}"
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fi
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}
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setStaticIPv4() {
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# Local, named variables
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local IFCFG_FILE
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local IPADDR
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local CIDR
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local CONNECTION_NAME
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# For the Debian family, if dhcpcd.conf exists,
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if [[ -f "/etc/dhcpcd.conf" ]]; then
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# check if the IP is already in the file
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if grep -q "${IPV4_ADDRESS}" /etc/dhcpcd.conf; then
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printf " %b Static IP already configured\\n" "${INFO}"
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# If it's not,
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else
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# set it using our function
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setDHCPCD
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# Then use the ip command to immediately set the new address
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ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
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# Also give a warning that the user may need to reboot their system
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printf " %b Set IP address to %s \\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%/*}"
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fi
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# If it's not Debian, check if it's the Fedora family by checking for the file below
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elif [[ -f "/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}" ]];then
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# configure networking via dhcpcd
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setDHCPCD
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return 0
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fi
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# If a DHCPCD config file was not found, check for an ifcfg config file based on interface name
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if [[ -f "/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}" ]];then
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# If it exists,
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IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}
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printf -v IPADDR "%s" "${IPV4_ADDRESS%%/*}"
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# check if the desired IP is already set
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if grep -Eq "${IPADDR}(\\b|\\/)" "${IFCFG_FILE}"; then
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printf " %b Static IP already configured\\n" "${INFO}"
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# Otherwise,
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else
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# Put the IP in variables without the CIDR notation
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printf -v CIDR "%s" "${IPV4_ADDRESS##*/}"
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# Backup existing interface configuration:
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cp "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
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# Build Interface configuration file using the GLOBAL variables we have
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{
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echo "# Configured via Pi-hole installer"
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echo "DEVICE=$PIHOLE_INTERFACE"
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echo "BOOTPROTO=none"
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echo "ONBOOT=yes"
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echo "IPADDR=$IPADDR"
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echo "PREFIX=$CIDR"
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echo "GATEWAY=$IPv4gw"
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echo "DNS1=$PIHOLE_DNS_1"
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echo "DNS2=$PIHOLE_DNS_2"
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echo "USERCTL=no"
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}> "${IFCFG_FILE}"
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# Use ip to immediately set the new address
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ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
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# If NetworkMangler command line interface exists and ready to mangle,
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if is_command nmcli && nmcli general status &> /dev/null; then
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# Tell NetworkManagler to read our new sysconfig file
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nmcli con load "${IFCFG_FILE}" > /dev/null
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fi
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# Show a warning that the user may need to restart
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printf " %b Set IP address to %s\\n You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%%/*}"
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fi
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# If all that fails,
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else
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# show an error and exit
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printf " %b Warning: Unable to locate configuration file to set static IPv4 address\\n" "${INFO}"
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exit 1
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setIFCFG "${IFCFG_FILE}"
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return 0
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fi
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# if an ifcfg config does not exists for the interface name, try the connection name via network manager
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if is_command nmcli && nmcli general status &> /dev/null; then
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CONNECTION_NAME=$(nmcli dev show ${PIHOLE_INTERFACE} | grep 'GENERAL.CONNECTION' | cut -d: -f2 | xargs | tr ' ' '_')
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if [[ -f "/etc/sysconfig/network-scripts/ifcfg-${CONNECTION_NAME}" ]];then
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# If it exists,
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IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${CONNECTION_NAME}
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setIFCFG "${IFCFG_FILE}"
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return 0
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fi
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fi
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# If previous conditions failed, show an error and exit
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printf " %b Warning: Unable to locate configuration file to set static IPv4 address\\n" "${INFO}"
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exit 1
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}
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# Check an IP address to see if it is a valid one
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