on-configure-network

gehe zur Dokumentation dieser Datei

#!/bin/sh
#
# Konfiguriere uebliche Opennet-Interfaces sowie ein lokales Interface.
#
# Dieses Skript wird nur ein einziges Mal nach einem Upgrade oder der Erstinstallation ausgefuehrt:
#   http://wiki.openwrt.org/doc/uci#defaults
#


# shellcheck source=opennet/packages/on-core/files/usr/lib/opennet/on-helper.sh
. "${IPKG_INSTROOT:-}/usr/lib/opennet/on-helper.sh"


OPENWRT_DEFAULT_LOCAL_IP=192.168.1.1


configure_local_network() {
    local uci_prefix="network.$NETWORK_LOCAL"
    # wurde die Standard-IP bereits veraendert?
    [ "$(uci_get "${uci_prefix}.ipaddr")" !=  "$OPENWRT_DEFAULT_LOCAL_IP" ] && return 0
    uci set "${uci_prefix}.ipaddr=$(get_on_core_default lan_ipaddr)"
    uci set "${uci_prefix}.netmask=$(get_on_core_default lan_netmask)"
}


configure_opennet_zone() {
    local uci_prefix
    # Forwarding (die letzte Aktion dieses Ablaufs) existiert? Keine Aenderungen ...
    [ -n "$(find_first_uci_section "firewall" "forwarding" "src=$ZONE_MESH" "dest=$ZONE_MESH")" ] && return 0
    uci_prefix=$(find_first_uci_section "firewall" "zone" "name=$ZONE_MESH")
    # Zone anlegen, falls leer
    [ -z "$uci_prefix" ] && uci_prefix=firewall.$(uci add firewall zone)
    uci set "$uci_prefix=zone"
    uci set "$uci_prefix.name=$ZONE_MESH"
    # Opennet-APs bieten ueblicherweise keine privaten Dienste an
    uci set "$uci_prefix.input=ACCEPT"
    # ausgehende Pakete sind OK
    uci set "$uci_prefix.output=ACCEPT"
    # Verkehr aus dem opennet-Netz darf nicht in lokale oder tunnel-Netze
    uci set "$uci_prefix.forward=REJECT"
    # via "masq_src" ersetzen wir die ehemalige "/etc/firewall.opennet" fuer Quell-basiertes Masquerading
    add_zone_forward "$ZONE_LOCAL" "$ZONE_MESH"
    # intra-Zone-Verkehr muss explizit erlaubt werden
    add_zone_forward "$ZONE_MESH" "$ZONE_MESH"
}


configure_olsr_radio() {
    trap 'error_trap configure_olsr_radio "$*"' EXIT
    local iface_index="$1"
    local iface_logical="$2"
    local iface_phys="$3"

    local uci_wifi="wireless.@wifi-iface[$iface_index]"
    local uci_radio
    local radio_hwmode
    local bssid
    uci_radio="wireless.$(uci_get "${uci_wifi}.device")"
    radio_hwmode=$(uci_get "${uci_radio}.hwmode")
    bssid=$(get_on_core_default wifi_bssid)

    uci set "${uci_wifi}.network=$iface_logical"
    uci set "${uci_wifi}.ifname=$iface_phys"

    uci set "wireless.radio${iface_index}.country=$(get_on_core_default wifi_country)"
    uci_delete "wireless.radio${iface_index}.disabled"

    # typ-spezifische Attribute
    if echo "$radio_hwmode" | grep -q "a"; then
        # 5 GHz: kein Mesh-Modus verfuegbar
        uci set "${uci_wifi}.ssid=$(get_on_core_default wifi_ssid_5ghz)"
        uci set "${uci_wifi}.mode=$(get_on_core_default wifi_mode_5ghz)"
        uci set "${uci_radio}.channel=$(get_on_core_default wifi_channel_5ghz)"
        uci set "${uci_wifi}.isolate=1"
    else
        # 2,4 GHz: Ad-hoc-Modus
        uci set "${uci_wifi}.ssid=$(get_on_core_default wifi_ssid)"
        uci set "${uci_wifi}.mode=$(get_on_core_default wifi_mode)"
        [ -n "$bssid" ] && uci set "${uci_wifi}.bssid=$bssid"
        uci set "${uci_radio}.channel=$(get_on_core_default wifi_channel)"
    fi
    return
}


configure_olsr_single_interface() {
    trap 'error_trap configure_olsr_single_interface "$*"' EXIT
    local iface_logical="$1"
    local iface_addr="$2"
    local iface_netmask="$3"
    local iface_phys="$4"

    # configure on_wifi
    uci set "network.${iface_logical}=interface"
    uci set "network.${iface_logical}.proto=static"
    uci set "network.${iface_logical}.ifname=$iface_phys"
    uci set "network.${iface_logical}.netmask=$iface_netmask"
    uci set "network.${iface_logical}.defaultroute=0"
    uci set "network.${iface_logical}.peerdns=0"
    uci set "network.${iface_logical}.ipaddr=$iface_addr"

    # disable dhcp on on_wifi
    uci set "dhcp.${iface_logical}=dhcp"
    uci set "dhcp.${iface_logical}.interface=${iface_logical}"
    uci set "dhcp.${iface_logical}.dynamicdhcp=0"
    uci set "dhcp.${iface_logical}.ignore=1"
}


configure_olsr_interfaces() {
    trap 'error_trap configure_olsr_interfaces "$*"' EXIT

    # diese Aktion ist bereits abgeschlossen
    uci -q show "network" | grep -q '^network\.on_eth_0\.' && return 0

    local on_id
    local on_ipschema
    local on_netmask
    on_id=$(uci_get on-core.settings.on_id "$(get_on_core_default on_id_preset)")
    on_ipschema=$(get_on_core_default on_ipschema)
    on_netmask=$(get_on_core_default on_netmask)
    local on_ipaddr
    local iface_phys
    local iface_logical

    # Erstelle wifi config in uci, falls noch keine vorhanden ist
    /sbin/wifi config

    local iface_index=0
    while [ -n "$(uci_get "wireless.@wifi-iface[${iface_index}]")" ]; do
        on_ipaddr=$(get_on_ip "$on_id" "$on_ipschema" "$iface_index")
        iface_phys=wlan$iface_index
        iface_logical=on_wifi_$iface_index

        configure_olsr_single_interface "$iface_logical" "$on_ipaddr" "$on_netmask" "$iface_phys"
        configure_olsr_radio "$iface_index" "$iface_logical" "$iface_phys"

        add_interface_to_zone "$ZONE_MESH" "$iface_logical"

        iface_index=$((iface_index + 1))
    done

    for iface_logical in "on_eth_0" "on_eth_1"; do
        on_ipaddr=$(get_on_ip "$on_id" "$on_ipschema" "$iface_index")
        iface_phys=none
        configure_olsr_single_interface "$iface_logical" "$on_ipaddr" "$on_netmask" "$iface_phys"
        add_interface_to_zone "$ZONE_MESH" "$iface_logical"
        iface_index=$((iface_index + 1))
    done
}


# jede Funktion sollte selbst pruefen, ob ihre Aktion bereits abgeschlossen ist
configure_local_network
configure_opennet_zone
configure_olsr_interfaces

apply_changes network wireless dhcp firewall