Daniel Barlow
7e2b0068e6
There is nothing in this commit except for the changes made by nix-shell -p nixfmt-rfc-style --run "nixfmt ." If this has mucked up your open branches then sorry about that. You can probably nixfmt them to match before merging
90 lines
2.2 KiB
Nix
90 lines
2.2 KiB
Nix
{
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liminix,
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usb-modeswitch,
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ppp,
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lib,
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svc,
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uevent-watch,
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}:
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{
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apn,
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username,
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password,
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authType,
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}:
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let
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inherit (liminix.services) oneshot;
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authTypeNum = if authType == "pap" then "1" else "2";
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chat = lib.escapeShellArgs [
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# Your usb modem thing might present as a tty that you run PPP
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# over, or as a network device ("ndis" or "ncm"). The latter
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# kind is to be preferred, at least in principle, because it's
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# faster. This initialization sequence works for the Huawei
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# E3372, and took much swearing: the error messages are *awful*
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""
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"AT"
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"OK"
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"ATZ"
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# create PDP context
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"OK"
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"AT+CGDCONT=1,\"IP\",\"${apn}\""
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# activate PDP context
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"OK"
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"AT+CGACT=1,1"
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# setup username and password per requirements of sim provider.
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# (caret is special to chat, so needs escaping in AT commands)
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"OK"
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"AT\\^AUTHDATA=1,${authTypeNum},\"\",\"${password}\",\"${username}\""
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# start the thing (I am choosing to read this as "NDIS DialUP")
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"OK"
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"AT\\^NDISDUP=1,1"
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"OK"
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];
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modeswitch = oneshot rec {
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name = "modem-modeswitch";
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controller = (
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svc.uevent-rule.build {
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serviceName = name;
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terms = {
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devtype = "usb_device";
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product = "12d1/14fe/102";
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};
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}
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);
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up = ''
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${usb-modeswitch}/bin/usb_modeswitch -v 12d1 -p 14fe --huawei-new-mode
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'';
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};
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atz = oneshot rec {
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name = "modem-atz";
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# atz does not depend on modeswitch because modeswitch service
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# is only running when the stick is in the wrong mode
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dependencies = [ modeswitch.controller ];
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buildInputs = [ modeswitch ];
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controller = (
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svc.uevent-rule.build {
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serviceName = name;
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terms = {
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subsystem = "tty";
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attrs = {
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idVendor = "12d1";
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idProduct = "1506";
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};
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};
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symlink = "/dev/modem";
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}
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);
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up = ''
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ls -l /dev/modem
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test -L /dev/modem || exit 1
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${ppp}/bin/chat -s -v ${chat} 0<>/dev/modem 1>&0
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'';
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down = "${ppp}/bin/chat -v '' ATZ OK 0<>/dev/modem 1>&0";
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};
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in
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svc.network.link.build {
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ifname = "wwan0";
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dependencies = [ atz ];
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}
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