87 lines
2.2 KiB
Nix
87 lines
2.2 KiB
Nix
with import ./lib;
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{ config, pkgs, ... }: let
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cfg = {
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pin = "@${config.krebs.secret.directory}/o2.pin";
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ttys.ppp = "/dev/ttyACM0";
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ttys.com = "/dev/ttyACM1";
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};
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in {
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assertions = [
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{
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assertion =
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config.networking.resolvconf.enable ||
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config.networking.useNetworkd;
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message = "ppp configuration needs resolvconf or networkd";
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}
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];
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environment.etc."ppp/ip-up".source = pkgs.writeDash "ppp.ip-up" ''
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${pkgs.openresolv}/bin/resolvconf -a "$IFNAME" < /etc/ppp/resolv.conf
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'';
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environment.etc."ppp/ip-down".source = pkgs.writeDash "ppp.ip-down" ''
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${pkgs.openresolv}/bin/resolvconf -fd "$IFNAME"
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'';
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environment.etc."ppp/peers/o2".text = /* sh */ ''
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${cfg.ttys.ppp}
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921600
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crtscts
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defaultroute
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holdoff 10
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lock
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maxfail 0
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noauth
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nodetach
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noipdefault
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passive
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persist
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usepeerdns
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connect "${pkgs.ppp}/bin/chat ''${DEBUG+-v} -Ss -f ${pkgs.writeText "o2.chat" /* sh */ ''
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ABORT "BUSY"
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ABORT "NO CARRIER"
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REPORT CONNECT
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"*EMRDY: 1"
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ATZ OK
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AT+CFUN=1 OK
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${cfg.pin} TIMEOUT 2 ERROR-AT-OK
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AT+CGDCONT=1,\042IP\042,\042internet\042 OK
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ATDT*99***1# CONNECT
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''}"
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'';
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users.users.root.packages = [
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(pkgs.writeDashBin "connect" ''
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# usage:
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# connect wlan
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# connect wwan [PEERNAME]
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set -efu
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rfkill_wlan=/sys/class/rfkill/rfkill2
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rfkill_wwan=/sys/class/rfkill/rfkill1
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case $1 in
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wlan)
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${pkgs.procps}/bin/pkill pppd || :
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echo 0 > "$rfkill_wwan"/state
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echo 1 > "$rfkill_wlan"/state
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;;
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wwan)
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name=''${2-o2}
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echo 0 > "$rfkill_wlan"/state
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echo 1 > "$rfkill_wwan"/state
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${pkgs.ppp}/bin/pppd call "$name" updetach
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;;
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*)
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echo "$0: error: bad arguments: $*" >&2
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exit 1
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esac
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'')
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(pkgs.writeDashBin "modem-send" ''
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# usage: modem-send ATCOMMAND
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set -efu
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tty=${lib.shell.escape cfg.ttys.com}
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exec <"$tty"
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printf '%s\r\n' "$1" >"$tty"
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${pkgs.gnused}/bin/sed -E '
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/^OK\r?$/q
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/^ERROR\r?$/q
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'
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'')
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];
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}
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