mirror of
https://github.com/MiSTer-devel/Scripts_MiSTer.git
synced 2026-04-19 03:05:34 +00:00
18bed41c66
* Initial implementation of mac_address.sh * Added manual MAC address entry. * Fixed wrong variable in update_mac() function. * Added clear commands before exiting. * Spelling and grammar. * Added some comments. * Added shebang. * Corrected terminal output of dialog commands. * Allow startup dialogs to show on any console. * Corrected valid MAC addresses being marked as invalid. Improved manual MAC address entry. * Replaced hardcoded redirects to '/dev/tty2' with redirects to scripts stderr and swap where applicable * Make MAC address discovery optional. * Modified sed regex to improve finding and replacing ethaddr variable in update_uboot() * Code cleanup. * Check important commands exist before running the script. * Generate locally administered, unicast addresses in a smarter way. * Simplify script * Code cleanup and minor experence changes * Moved mac_address.sh from other_authors to repository root
115 lines
2.4 KiB
Bash
Executable File
115 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Hardcoded for MiSTer
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iface="eth0"
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file="/media/fat/linux/u-boot.txt"
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update_uboot() {
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if [ -n "$1" ]; then
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if [ ! -e "$file" ]; then
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echo "ethaddr=${1^^}" > "$file"
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elif grep -q 'ethaddr=' "$file"; then
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sed -i "s/\(ethaddr=\)[0-9A-Fa-f:]\+/\1${1^^}/" "$file"
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else
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echo "ethaddr=${1^^}" >> "$file"
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fi
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fi
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}
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valid() {
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# Convert to a locally administistored unicast MAC address
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local byte=$(( 16#${1:0:2} ))
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byte=$(( (byte & ~1) | 2 ))
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byte=$(printf "%02x" $byte)
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local mac="${byte}${1:2}"
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echo "${mac^^}"
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if [[ "${1^^}" != "${mac^^}" ]]; then
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return 0 # Input was not valid
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fi
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return 1 # Input was already valid
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}
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finished() {
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if dialog --yesno "The MAC address has been changed to '$1'.\nYou will need to do a cold reboot for this to take effect.\n\nWould you like to cold reboot now?" 10 38 1>&2; then
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dialog --infobox "Rebooting please wait..." 3 28 1>&2
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reboot
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else
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dialog --clear
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fi
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exit 0
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}
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auto() {
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local mac
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mac=$(tr -dc '0-9a-f' </dev/urandom | head -c 12 | sed 's/../&:/g; s/:$//')
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mac=$(valid "$mac")
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update_uboot "$mac"
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finished "$mac"
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}
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manual() {
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local current input
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current=$(cat "/sys/class/net/$iface/address")
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current="${current^^}"
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input=$current
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while true; do
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if ! input=$(dialog --inputbox "The MAC address for $iface is currently '$current'\n\nPlease enter a new MAC address..." 11 42 "$input" 3>&1 1>&2 2>&3); then
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return
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fi
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# Format MAC address
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input=${input^^}
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input=${input//-/:}
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# Validate user input is a MAC address
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if [[ ! "$input" =~ ^([0-9A-F]{2}([-:])){5}([0-9A-Fa-f]{2})$ ]]; then
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dialog --msgbox "Not a valid MAC address." 5 52 1>&2
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continue
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fi
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local mac sta
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mac=$(valid "$input")
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sta=$?
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if [ $sta -eq 0 ]; then
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if dialog --yesno "'${input^^}' is not a suitable MAC address.\n\nWould you like to use '$mac' instead?" 7 64 1>&2; then
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input="$mac"
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break
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fi
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else
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if [ "$input" = "$current" ]; then
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dialog --msgbox "'$input' is the current MAC address." 5 52 1>&2
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continue
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fi
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break
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fi
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done
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update_uboot "$mac"
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finished "$mac"
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}
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while true; do
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local addr
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local choice
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addr=$(cat "/sys/class/net/$iface/address")
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choice=$(dialog --menu "The current MAC address for $iface is '${addr^^}'.\n\nWhat do you want to do?" 12 44 3 \
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A "Automatically generate MAC address" M "Manually set MAC address..." 3>&1 1>&2 2>&3)
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case $choice in
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A)
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auto
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;;
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M)
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manual
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;;
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*)
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exit 0
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;;
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esac
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done
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