87 lines
2.0 KiB
Bash
87 lines
2.0 KiB
Bash
#!/bin/sh
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#
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# v0.2 - 19/09/2023
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# Dependencias sdhcp, wpa_supplicant, dzen2, sudo, doas (opcional)
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#
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# Shell: POSIX compliant
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# Autor: O. Sánchez <o-sanchez@linuxmail.org> 2023
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script="${0##*/}"
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deps() {
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if ! command -v sdhcp; then
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printf '%b\n' "Dependencias no satisfecha:\n\tsdhcp\n"
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exit 1
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elif ! command wpa_supplicant; then
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printf '%b' "Dependencia no satisfecha:\n\twpa_supplicant\n"
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exit 1
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elif ! command -v dzen2; then
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printf '%b' "Dependencia no satisfecha:\n\tdzen2\n"
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exit 1
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fi
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}
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ayuda(){
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printf %s "\
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Script para asignar ip dinámicamente usando sdhcp para establecer conexión a internet.
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Uso: $script [interface]
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Ejemplo:
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$script eth0
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$script wlan0
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"
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}
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admin() {
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if command -v sudo >/dev/null && sudo -l | grep -q -e ' ALL$' -e xbps-install; then
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echo sudo
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elif command -v doas >/dev/null && [ -f /etc/doas.conf ]; then
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echo doas
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elif [ "$(id -u)" != 0 ]; then
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echo su
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fi
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}
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msg() {
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dzen2 -p 5 -fn 'Inconsolata:size=10:style=bold' -ta 5 \
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-w 260 -x 1100 -y 25
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}
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_sudo=$(admin)
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deps
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case $1 in
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eth0)
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read -r state < /sys/class/net/"$1"/operstate
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if [ "$state" = "down" ]; then
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"$_sudo" ip link set "$1" up
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"$_sudo" sdhcp "$1"
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printf '%s\n' "Ethernet activado" | msg &
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elif [ "$state" = "up" ]; then
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"$_sudo" kill "$(pgrep --list-full sdhcp | awk '/eth0/ {print $1}')"
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"$_sudo" ip link set eth0 down
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printf '%s\n' "Ethernet desactivado" | msg &
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fi
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;;
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wlan0|wlan1)
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read -r state < /sys/class/net/"$1"/operstate
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if [ "$(pgrep wpa_supplicant)" ]; then
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"$_sudo" pkill -f wpa_supplicant
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"$_sudo" ip link set "$1" down
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"$_sudo" kill "$(pgrep --list-full sdhcp | awk '/wlan/ {print $1}')"
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printf '%s\n' "Wifi desactivado" | msg &
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elif [ "$state" = "down" ]; then
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echo Activando interfaz
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"$_sudo" ip link set "$1" up
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echo Iniciando wpa_supplicant...
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"$_sudo" wpa_supplicant -B -D nl80211,wext -c /etc/wpa_supplicant/wpa_supplicant-wlan0.conf -i "$1"
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echo Asignando ip dinámica...
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printf '%s\n' "Activando wifi..." | msg &
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"$_sudo" sdhcp "$1"
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fi
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;;
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--help|-h|*)
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ayuda
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esac
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