net: Script para asignar IP dinámicas (wireless y wired)

varios/net

@@ -0,0 +1,69 @@
+#!/bin/sh
+
+## Script para asignar ip dinámicamente usando sdhcp para establecer conexión a internet
+## Dependencias sdhcp, wpa_supplicant, dzen2 
+
+if ! command -v sdhcp wpa_supplicant dzen2; then
+	printf '%b\n' "Dependencias no satisfechas. Dependencias necesarias:\n\tsdhcp, wpa_supplicant, dzen2"
+fi
+
+
+ayuda(){
+	cat << EOF
+Uso: $(basename "$0") [interface]
+	Ejemplo: $(basename "$0") eth0
+	Ejemplo: $(basename "$0") wlan0
+EOF
+}
+
+admin() {
+	if command -v sudo >/dev/null && sudo -l | grep -q -e ' ALL$' -e xbps-install; then
+		echo sudo
+	elif command -v doas >/dev/null && [ -f /etc/doas.conf ]; then
+		echo doas
+	elif [ "$(id -u)" != 0 ]; then
+		echo su
+	fi
+}
+
+msg() {
+	dzen2 -p 5 -fn 'JetBrains Mono:size=8:style=bold' -ta 5 \
+		-w 260 -x 1100 -y 25
+}
+
+SUDO=$(admin)
+
+case $1 in
+	eth0)
+		read -r state < /sys/class/net/"$1"/operstate
+		if [ "$state" = "down" ]; then
+			"$SUDO" ip link set "$1" up
+			"$SUDO" sdhcp "$1"
+			printf '%s\n' "Ethernet activado" | msg
+		elif [  "$state" = "up" ]; then
+			"$SUDO" kill "$(pgrep --list-full sdhcp | awk '/eth0/ {print $1}')"
+			"$SUDO" ip link set eth0 down
+			printf '%s\n' "Ethernet desactivado" | msg
+		fi
+		;;
+	wlan0)
+		read -r state < /sys/class/net/"$1"/operstate
+		if [ "$(pgrep wpa_supplicant)" ]; then
+			"$SUDO" pkill -f wpa_supplicant
+			"$SUDO" ip link set wlan0 down
+			"$SUDO" kill "$(pgrep --list-full sdhcp | awk '/wlan0/ {print $1}')"
+			printf '%s\n' "Wifi desactivado" | msg
+		elif [ "$state" = "down" ]; then
+			echo Activando interfaz
+			"$SUDO" ip link set "$1" up
+			echo Iniciando wpa_supplicant...
+			"$SUDO" wpa_supplicant -B -D wext -c /etc/wpa_supplicant/wpa_supplicant-wlan0.conf -i "$1"
+#			"$SUDO" wpa_supplicant -B -D nl80211,wext -c /etc/wpa_supplicant/wpa_supplicant-wlan0.conf -i "$1"
+			echo Asignando ip dinámica...
+			printf '%s\n' "Activando wifi..." | msg
+			"$SUDO" sdhcp "$1"
+		fi
+		;;
+	--help|-h|*)
+		ayuda
+esac