OpenWrt – Rev 4

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#!/bin/sh

[ -n "$INCLUDE_ONLY" ] || {
        . /lib/functions.sh
        . ../netifd-proto.sh
        init_proto "$@"
}
#DBG=-v

proto_mbim_init_config() {
        available=1
        no_device=1
        proto_config_add_string "device:device"
        proto_config_add_string apn
        proto_config_add_string pincode
        proto_config_add_string delay
        proto_config_add_string auth
        proto_config_add_string username
        proto_config_add_string password
        proto_config_add_defaults
}

_proto_mbim_setup() {
        local interface="$1"
        local tid=2
        local ret

        local device apn pincode delay $PROTO_DEFAULT_OPTIONS
        json_get_vars device apn pincode delay auth username password $PROTO_DEFAULT_OPTIONS

        [ -n "$ctl_device" ] && device=$ctl_device

        [ -n "$device" ] || {
                echo "mbim[$$]" "No control device specified"
                proto_notify_error "$interface" NO_DEVICE
                proto_set_available "$interface" 0
                return 1
        }
        [ -c "$device" ] || {
                echo "mbim[$$]" "The specified control device does not exist"
                proto_notify_error "$interface" NO_DEVICE
                proto_set_available "$interface" 0
                return 1
        }

        devname="$(basename "$device")"
        devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
        ifname="$( ls "$devpath"/net )"

        [ -n "$ifname" ] || {
                echo "mbim[$$]" "Failed to find matching interface"
                proto_notify_error "$interface" NO_IFNAME
                proto_set_available "$interface" 0
                return 1
        }

        [ -n "$apn" ] || {
                echo "mbim[$$]" "No APN specified"
                proto_notify_error "$interface" NO_APN
                return 1
        }

        [ -n "$delay" ] && sleep "$delay"

        echo "mbim[$$]" "Reading capabilities"
        umbim $DBG -n -d $device caps || {
                echo "mbim[$$]" "Failed to read modem caps"
                proto_notify_error "$interface" PIN_FAILED
                return 1
        }
        tid=$((tid + 1))

        [ "$pincode" ] && {
                echo "mbim[$$]" "Sending pin"
                umbim $DBG -n -t $tid -d $device unlock "$pincode" || {
                        echo "mbim[$$]" "Unable to verify PIN"
                        proto_notify_error "$interface" PIN_FAILED
                        proto_block_restart "$interface"
                        return 1
                }
        }
        tid=$((tid + 1))

        echo "mbim[$$]" "Checking pin"
        umbim $DBG -n -t $tid -d $device pinstate || {
                echo "mbim[$$]" "PIN required"
                proto_notify_error "$interface" PIN_FAILED
                proto_block_restart "$interface"
                return 1
        }
        tid=$((tid + 1))

        echo "mbim[$$]" "Checking subscriber"
        umbim $DBG -n -t $tid -d $device subscriber || {
                echo "mbim[$$]" "Subscriber init failed"
                proto_notify_error "$interface" NO_SUBSCRIBER
                return 1
        }
        tid=$((tid + 1))

        echo "mbim[$$]" "Register with network"
        umbim $DBG -n -t $tid -d $device registration || {
                echo "mbim[$$]" "Subscriber registration failed"
                proto_notify_error "$interface" NO_REGISTRATION
                return 1
        }
        tid=$((tid + 1))

        echo "mbim[$$]" "Attach to network"
        umbim $DBG -n -t $tid -d $device attach || {
                echo "mbim[$$]" "Failed to attach to network"
                proto_notify_error "$interface" ATTACH_FAILED
                return 1
        }
        tid=$((tid + 1))
 
        echo "mbim[$$]" "Connect to network"
        while ! umbim $DBG -n -t $tid -d $device connect "$apn" "$auth" "$username" "$password"; do
                tid=$((tid + 1))
                sleep 1;
        done
        tid=$((tid + 1))

        uci_set_state network $interface tid "$tid"

        echo "mbim[$$]" "Connected, starting DHCP"
        proto_init_update "$ifname" 1
        proto_send_update "$interface"

        json_init
        json_add_string name "${interface}_4"
        json_add_string ifname "@$interface"
        json_add_string proto "dhcp"
        proto_add_dynamic_defaults
        json_close_object
        ubus call network add_dynamic "$(json_dump)"

        json_init
        json_add_string name "${interface}_6"
        json_add_string ifname "@$interface"
        json_add_string proto "dhcpv6"
        json_add_string extendprefix 1
        proto_add_dynamic_defaults
        ubus call network add_dynamic "$(json_dump)"
}

proto_mbim_setup() {
        local ret

        _proto_mbim_setup $@
        ret=$?

        [ "$ret" = 0 ] || {
                logger "mbim bringup failed, retry in 15s"
                sleep 15
        }

        return $rt
}

proto_mbim_teardown() {
        local interface="$1"

        local device
        json_get_vars device
        local tid=$(uci_get_state network $interface tid)

        [ -n "$ctl_device" ] && device=$ctl_device

        echo "mbim[$$]" "Stopping network"
        [ -n "$tid" ] && {
                umbim $DBG -t$tid -d "$device" disconnect
                uci_revert_state network $interface tid
        }

        proto_init_update "*" 0
        proto_send_update "$interface"
}

[ -n "$INCLUDE_ONLY" ] || add_protocol mbim