OpenWrt – Rev 1

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#!/bin/sh

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

proto_ncm_init_config() {
        no_device=1
        available=1
        proto_config_add_string "device:device"
        proto_config_add_string apn
        proto_config_add_string auth
        proto_config_add_string username
        proto_config_add_string password
        proto_config_add_string pincode
        proto_config_add_string delay
        proto_config_add_string mode
        proto_config_add_string pdptype
        proto_config_add_int profile
        proto_config_add_defaults
}

proto_ncm_setup() {
        local interface="$1"

        local manufacturer initialize setmode connect finalize ifname devname devpath

        local device apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
        json_get_vars device apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS

        [ "$metric" = "" ] && metric="0"

        [ -n "$profile" ] || profile=1

        pdptype=`echo "$pdptype" | awk '{print toupper($0)}'`
        [ "$pdptype" = "IP" -o "$pdptype" = "IPV6" -o "$pdptype" = "IPV4V6" ] || pdptype="IP"

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

        [ -n "$device" ] || {
                echo "No control device specified"
                proto_notify_error "$interface" NO_DEVICE
                proto_set_available "$interface" 0
                return 1
        }

        device="$(readlink -f $device)"
        [ -e "$device" ] || {
                echo "Control device not valid"
                proto_set_available "$interface" 0
                return 1
        }

        devname="$(basename "$device")"
        case "$devname" in
        'tty'*)
                devpath="$(readlink -f /sys/class/tty/$devname/device)"
                ifname="$( ls "$devpath"/../../*/net )"
                ;;
        *)
                devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
                ifname="$( ls "$devpath"/net )"
                ;;
        esac
        [ -n "$ifname" ] || {
                echo "The interface could not be found."
                proto_notify_error "$interface" NO_IFACE
                proto_set_available "$interface" 0
                return 1
        }

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

        manufacturer=`gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk 'NF && $0 !~ /AT\+CGMI/ { sub(/\+CGMI: /,""); print tolower($1); exit; }'`
        [ $? -ne 0 ] && {
                echo "Failed to get modem information"
                proto_notify_error "$interface" GETINFO_FAILED
                return 1
        }

        json_load "$(cat /etc/gcom/ncm.json)"
        json_select "$manufacturer"
        [ $? -ne 0 ] && {
                echo "Unsupported modem"
                proto_notify_error "$interface" UNSUPPORTED_MODEM
                proto_set_available "$interface" 0
                return 1
        }
        json_get_values initialize initialize
        for i in $initialize; do
                eval COMMAND="$i" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
                        echo "Failed to initialize modem"
                        proto_notify_error "$interface" INITIALIZE_FAILED
                        return 1
                }
        done

        [ -n "$pincode" ] && {
                PINCODE="$pincode" gcom -d "$device" -s /etc/gcom/setpin.gcom || {
                        echo "Unable to verify PIN"
                        proto_notify_error "$interface" PIN_FAILED
                        proto_block_restart "$interface"
                        return 1
                }
        }

        json_get_values configure configure
        echo "Configuring modem"
        for i in $configure; do
                eval COMMAND="$i" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
                        echo "Failed to configure modem"
                        proto_notify_error "$interface" CONFIGURE_FAILED
                        return 1
                }
        done

        [ -n "$mode" ] && {
                json_select modes
                json_get_var setmode "$mode"
                echo "Setting mode"
                eval COMMAND="$setmode" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
                        echo "Failed to set operating mode"
                        proto_notify_error "$interface" SETMODE_FAILED
                        return 1
                }
                json_select ..
        }

        echo "Starting network $interface"
        json_get_vars connect
        echo "Connecting modem"
        eval COMMAND="$connect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
                echo "Failed to connect"
                proto_notify_error "$interface" CONNECT_FAILED
                return 1
        }

        json_get_vars finalize

        echo "Setting up $ifname"
        proto_init_update "$ifname" 1
        proto_add_data
        json_add_string "manufacturer" "$manufacturer"
        proto_close_data
        proto_send_update "$interface"

        [ "$pdptype" = "IP" -o "$pdptype" = "IPV4V6" ] && {
                json_init
                json_add_string name "${interface}_4"
                json_add_string ifname "@$interface"
                json_add_string proto "dhcp"
                proto_add_dynamic_defaults
                ubus call network add_dynamic "$(json_dump)"
        }

        [ "$pdptype" = "IPV6" -o "$pdptype" = "IPV4V6" ] && {
                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)"
        }

        [ -n "$finalize" ] && {
                eval COMMAND="$finalize" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
                        echo "Failed to configure modem"
                        proto_notify_error "$interface" FINALIZE_FAILED
                        return 1
                }
        }

}

proto_ncm_teardown() {
        local interface="$1"

        local manufacturer disconnect

        local device profile
        json_get_vars device profile

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

        [ -n "$profile" ] || profile=1

        echo "Stopping network $interface"

        json_load "$(ubus call network.interface.$interface status)"
        json_select data
        json_get_vars manufacturer

        json_load "$(cat /etc/gcom/ncm.json)"
        json_select "$manufacturer" || {
                echo "Unsupported modem"
                proto_notify_error "$interface" UNSUPPORTED_MODEM
                return 1
        }

        json_get_vars disconnect
        eval COMMAND="$disconnect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
                echo "Failed to disconnect"
                proto_notify_error "$interface" DISCONNECT_FAILED
                return 1
        }

        proto_init_update "*" 0
        proto_send_update "$interface"
}
[ -n "$INCLUDE_ONLY" ] || {
        add_protocol ncm
}