X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/b766f543866d39111ac8e50f2d7972f8f58822c7..02e3b0f5531da86339e8da86b1f78a9b6aba7f50:/package/base-files/files/lib/network/config.sh?ds=inline diff --git a/package/base-files/files/lib/network/config.sh b/package/base-files/files/lib/network/config.sh index 96890acac..cf5b197b5 100755 --- a/package/base-files/files/lib/network/config.sh +++ b/package/base-files/files/lib/network/config.sh @@ -3,6 +3,29 @@ # DEBUG="echo" +do_sysctl() { + [ -n "$2" ] && \ + sysctl -n -e -w "$1=$2" >/dev/null || \ + sysctl -n -e "$1" +} + +map_sysctls() { + local cfg="$1" + local ifn="$2" + + local fam + for fam in ipv4 ipv6; do + if [ -d /proc/sys/net/$fam ]; then + local key + for key in /proc/sys/net/$fam/*/$ifn/*; do + local val + config_get val "$cfg" "${fam}_${key##*/}" + [ -n "$val" ] && echo -n "$val" > "$key" + done + fi + done +} + find_config() { local iftype device iface ifaces ifn for ifn in $interfaces; do @@ -13,7 +36,7 @@ find_config() { esac config_get device "$ifn" device for ifc in $device $iface $ifaces; do - [ "$ifc" = "$1" ] && { + [ ."$ifc" = ."$1" ] && { echo "$ifn" return 0 } @@ -24,7 +47,7 @@ find_config() { } scan_interfaces() { - local mode iftype iface ifname device + local cfgfile="${1:-network}" interfaces= config_cb() { case "$1" in @@ -32,17 +55,19 @@ scan_interfaces() { config_set "$2" auto 1 ;; esac + local iftype ifname device proto config_get iftype "$CONFIG_SECTION" TYPE case "$iftype" in interface) - config_get proto "$CONFIG_SECTION" proto append interfaces "$CONFIG_SECTION" + config_get proto "$CONFIG_SECTION" proto config_get iftype "$CONFIG_SECTION" type config_get ifname "$CONFIG_SECTION" ifname - config_set "$CONFIG_SECTION" device "$ifname" + config_get device "$CONFIG_SECTION" device "$ifname" + config_set "$CONFIG_SECTION" device "$device" case "$iftype" in bridge) - config_set "$CONFIG_SECTION" ifnames "$ifname" + config_set "$CONFIG_SECTION" ifnames "$device" config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION" ;; esac @@ -50,109 +75,338 @@ scan_interfaces() { ;; esac } - config_load network + config_load "${cfgfile}" } add_vlan() { local vif="${1%\.*}" - + [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || { ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif" $DEBUG vconfig add "$vif" "${1##*\.}" + return 0 } + return 1 } -setup_interface() { +# add dns entries if they are not in resolv.conf yet +add_dns() { + local cfg="$1"; shift + + remove_dns "$cfg" + + # We may be called by pppd's ip-up which has a nonstandard umask set. + # Create an empty file here and force its permission to 0644, otherwise + # dnsmasq will not be able to re-read the resolv.conf.auto . + [ ! -f /tmp/resolv.conf.auto ] && { + touch /tmp/resolv.conf.auto + chmod 0644 /tmp/resolv.conf.auto + } + + local dns + local add + for dns in "$@"; do + grep -qsF "nameserver $dns" /tmp/resolv.conf.auto || { + add="${add:+$add }$dns" + echo "nameserver $dns" >> /tmp/resolv.conf.auto + } + done + + [ -n "$cfg" ] && { + uci_toggle_state network "$cfg" dns "$add" + uci_toggle_state network "$cfg" resolv_dns "$add" + } +} + +# remove dns entries of the given iface +remove_dns() { + local cfg="$1" + + [ -n "$cfg" ] && { + [ -f /tmp/resolv.conf.auto ] && { + local dns=$(uci_get_state network "$cfg" resolv_dns) + for dns in $dns; do + sed -i -e "/^nameserver $dns$/d" /tmp/resolv.conf.auto + done + } + + uci_revert_state network "$cfg" dns + uci_revert_state network "$cfg" resolv_dns + } +} + +# sort the device list, drop duplicates +sort_list() { + local arg="$*" + ( + for item in $arg; do + echo "$item" + done + ) | sort -u +} + +# Create the interface, if necessary. +# Return status 0 indicates that the setup_interface() call should continue +# Return status 1 means that everything is set up already. + +prepare_interface() { local iface="$1" local config="$2" - local proto - local macaddr + local vifmac="$3" - [ -n "$config" ] || { - config=$(find_config "$iface") - [ "$?" = 0 ] || return 1 - } + # if we're called for the bridge interface itself, don't bother trying + # to create any interfaces here. The scripts have already done that, otherwise + # the bridge interface wouldn't exist. + [ "br-$config" = "$iface" -o -e "$iface" ] && return 0; - proto="${3:-$(config_get "$config" proto)}" - config_get iftype "$config" type - ifconfig "$iface" 2>/dev/null >/dev/null && { - # make sure the interface is removed from any existing bridge and brought down - ifconfig "$iface" down + local proto + config_get proto "$config" proto + + # make sure the interface is removed from any existing bridge and deconfigured, + # (deconfigured only if the interface is not set to proto=none) unbridge "$iface" + [ "$proto" = none ] || ifconfig "$iface" 0.0.0.0 + + # Change interface MAC address if requested + [ -n "$vifmac" ] && { + ifconfig "$iface" down + ifconfig "$iface" hw ether "$vifmac" up + } + + # Apply sysctl settings + map_sysctls "$config" "$iface" } # Setup VLAN interfaces - add_vlan "$iface" + add_vlan "$iface" && return 1 + ifconfig "$iface" 2>/dev/null >/dev/null || return 0 # Setup bridging + local iftype + config_get iftype "$config" type case "$iftype" in bridge) - ifconfig "$iface" up 2>/dev/null >/dev/null - ifconfig "br-$config" 2>/dev/null >/dev/null && { - $DEBUG brctl addif "br-$config" "$iface" - return 0 - } || { - $DEBUG brctl addbr "br-$config" - $DEBUG brctl setfd "br-$config" 0 - $DEBUG brctl addif "br-$config" "$iface" - iface="br-$config" + local macaddr + config_get macaddr "$config" macaddr + [ -x /usr/sbin/brctl ] && { + ifconfig "br-$config" 2>/dev/null >/dev/null && { + local newdevs devices + config_get devices "$config" device + for dev in $(sort_list "$devices" "$iface"); do + append newdevs "$dev" + done + uci_toggle_state network "$config" device "$newdevs" + $DEBUG ifconfig "$iface" 0.0.0.0 + $DEBUG do_sysctl "net.ipv6.conf.$iface.disable_ipv6" 1 + $DEBUG brctl addif "br-$config" "$iface" + # Bridge existed already. No further processing necesary + } || { + local stp + config_get_bool stp "$config" stp 0 + $DEBUG brctl addbr "br-$config" + $DEBUG brctl setfd "br-$config" 0 + $DEBUG ifconfig "$iface" 0.0.0.0 + $DEBUG do_sysctl "net.ipv6.conf.$iface.disable_ipv6" 1 + $DEBUG brctl addif "br-$config" "$iface" + $DEBUG brctl stp "br-$config" $stp + [ -z "$macaddr" ] && macaddr="$(cat /sys/class/net/$iface/address)" + $DEBUG ifconfig "br-$config" hw ether $macaddr up + # Creating the bridge here will have triggered a hotplug event, which will + # result in another setup_interface() call, so we simply stop processing + # the current event at this point. + } + ifconfig "$iface" ${macaddr:+hw ether "${macaddr}"} up 2>/dev/null >/dev/null + return 1 } ;; esac - + return 0 +} + +set_interface_ifname() { + local config="$1" + local ifname="$2" + + local device + config_get device "$1" device + uci_toggle_state network "$config" ifname "$ifname" + uci_toggle_state network "$config" device "$device" +} + +setup_interface_none() { + env -i ACTION="ifup" INTERFACE="$2" DEVICE="$1" PROTO=none /sbin/hotplug-call "iface" & +} + +setup_interface_static() { + local iface="$1" + local config="$2" + + local ipaddr netmask ip6addr + config_get ipaddr "$config" ipaddr + config_get netmask "$config" netmask + config_get ip6addr "$config" ip6addr + [ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1 + + local gateway ip6gw dns bcast metric + config_get gateway "$config" gateway + config_get ip6gw "$config" ip6gw + config_get dns "$config" dns + config_get bcast "$config" broadcast + config_get metric "$config" metric + + case "$ip6addr" in + */*) ;; + *:*) ip6addr="$ip6addr/64" ;; + esac + + [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}" + [ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" add "$ip6addr" + [ -z "$gateway" ] || $DEBUG route add default gw "$gateway" ${metric:+metric $metric} dev "$iface" + [ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" ${metric:+metric $metric} dev "$iface" + [ -z "$dns" ] || add_dns "$config" $dns + + config_get type "$config" TYPE + [ "$type" = "alias" ] && return 0 + + env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" & +} + +setup_interface_alias() { + local config="$1" + local parent="$2" + local iface="$3" + + local cfg + config_get cfg "$config" interface + [ "$parent" == "$cfg" ] || return 0 + + # parent device and ifname + local p_device p_type + config_get p_device "$cfg" device + config_get p_type "$cfg" type + + # select alias ifname + local layer use_iface + config_get layer "$config" layer 2 + case "$layer:$p_type" in + # layer 3: e.g. pppoe-wan or pptp-vpn + 3:*) use_iface="$iface" ;; + + # layer 2 and parent is bridge: e.g. br-wan + 2:bridge) use_iface="br-$cfg" ;; + + # layer 1: e.g. eth0 or ath0 + *) use_iface="$p_device" ;; + esac + + # alias counter + local ctr + config_get ctr "$parent" alias_count 0 + ctr="$(($ctr + 1))" + config_set "$parent" alias_count "$ctr" + + # alias list + local list + config_get list "$parent" aliases + append list "$config" + config_set "$parent" aliases "$list" + + use_iface="$use_iface:$ctr" + set_interface_ifname "$config" "$use_iface" + + local proto + config_get proto "$config" proto "static" + case "${proto}" in + static) + setup_interface_static "$use_iface" "$config" + ;; + *) + echo "Unsupported type '$proto' for alias config '$config'" + return 1 + ;; + esac +} + +setup_interface() { + local iface="$1" + local config="$2" + local proto="$3" + local vifmac="$4" + + [ -n "$config" ] || { + config=$(find_config "$iface") + [ "$?" = 0 ] || return 1 + } + + prepare_interface "$iface" "$config" "$vifmac" || return 0 + + [ "$iface" = "br-$config" ] && { + # need to bring up the bridge and wait a second for + # it to switch to the 'forwarding' state, otherwise + # it will lose its routes... + ifconfig "$iface" up + sleep 1 + } + # Interface settings - config_get mtu "$config" mtu - config_get macaddr "$config" macaddr - $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up + grep -qE "^ *$iface:" /proc/net/dev && { + local mtu macaddr txqueuelen + config_get mtu "$config" mtu + config_get macaddr "$config" macaddr + config_get txqueuelen "$config" txqueuelen + [ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down + $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} ${txqueuelen:+txqueuelen $txqueuelen} up + } + set_interface_ifname "$config" "$iface" - pidfile="/var/run/$iface.pid" + [ -n "$proto" ] || config_get proto "$config" proto case "$proto" in static) - config_get ipaddr "$config" ipaddr - config_get netmask "$config" netmask - [ -z "$ipaddr" -o -z "$netmask" ] && return 1 - - config_get ip6addr "$config" ip6addr - config_get gateway "$config" gateway - config_get dns "$config" dns - - [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" - [ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" inet6 add "$ip6addr" - [ -z "$gateway" ] || route add default gw "$gateway" - [ -z "$dns" -o -f /tmp/resolv.conf.auto ] || { - for ns in $dns; do - echo "nameserver $ns" >> /tmp/resolv.conf.auto - done - } - - env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug "iface" & + setup_interface_static "$iface" "$config" ;; dhcp) - # prevent udhcpc from starting more than once - lock "/var/lock/dhcp-$iface" - pid="$(cat "$pidfile" 2>/dev/null)" - [ -d "/proc/$pid" ] && grep udhcpc "/proc/${pid}/cmdline" >/dev/null 2>/dev/null && { - lock -u "/var/lock/dhcp-$iface" - return 0 - } + # kill running udhcpc instance + local pidfile="/var/run/dhcp-${iface}.pid" + service_kill udhcpc "$pidfile" + local ipaddr netmask hostname proto1 clientid vendorid broadcast reqopts config_get ipaddr "$config" ipaddr config_get netmask "$config" netmask config_get hostname "$config" hostname config_get proto1 "$config" proto + config_get clientid "$config" clientid + config_get vendorid "$config" vendorid + config_get_bool broadcast "$config" broadcast 0 + config_get reqopts "$config" reqopts [ -z "$ipaddr" ] || \ $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"} + # additional request options + local opt dhcpopts + for opt in $reqopts; do + append dhcpopts "-O $opt" + done + # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp) - [ "$proto1" != "$proto" ] && dhcpopts="-n -q" - $DEBUG eval udhcpc -t 0 -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} -b -p "$pidfile" ${dhcpopts:- -R &} - lock -u "/var/lock/dhcp-$iface" + [ "$proto1" != "$proto" ] && append dhcpopts "-n -q" || append dhcpopts "-O rootpath -R &" + [ "$broadcast" = 1 ] && broadcast="-O broadcast" || broadcast= + + $DEBUG eval udhcpc -t 0 -i "$iface" \ + ${ipaddr:+-r $ipaddr} \ + ${hostname:+-H $hostname} \ + ${clientid:+-c $clientid} \ + ${vendorid:+-V $vendorid} \ + -b -p "$pidfile" $broadcast \ + ${dhcpopts} + ;; + none) + setup_interface_none "$iface" "$config" ;; *) if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then - eval "setup_interface_$proto '$iface' '$config' '$proto'" + eval "setup_interface_$proto '$iface' '$config' '$proto'" else echo "Interface type $proto not supported." return 1 @@ -161,15 +415,34 @@ setup_interface() { esac } +stop_interface_dhcp() { + local config="$1" + + local ifname + config_get ifname "$config" ifname + + local lock="/var/lock/dhcp-${ifname}" + [ -f "$lock" ] && lock -u "$lock" + + remove_dns "$config" + + local pidfile="/var/run/dhcp-${ifname}.pid" + service_kill udhcpc "$pidfile" + + uci -P /var/state revert "network.$config" +} + unbridge() { local dev="$1" local brdev - brctl show | grep "$dev" >/dev/null && { + [ -x /usr/sbin/brctl ] || return 0 + brctl show 2>/dev/null | grep "$dev" >/dev/null && { # interface is still part of a bridge, correct that for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null + do_sysctl "net.ipv6.conf.$dev.disable_ipv6" 0 done } }