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94 lines
2.1 KiB
Bash
94 lines
2.1 KiB
Bash
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# relay.sh - Abstract relayd protocol backend
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# Copyright (c) 2011 OpenWrt.org
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# Hook into scan_interfaces() to synthesize a .device option
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# This is needed for /sbin/ifup to properly dispatch control
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# to setup_interface_relay() even if no .ifname is set in
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# the configuration.
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scan_relay() {
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config_set "$1" device "relay-$1"
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}
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# No coldplugging needed, relayd will be restarted if one of
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# the member interfaces goes up or down
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#coldplug_interface_relay() {
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# setup_interface_relay "relay-$1" "$1"
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#}
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setup_interface_relay() {
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local iface="$1"
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local cfg="$2"
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local link="relay-$cfg"
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local args=""
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local ifaces=""
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resolve_ifname() {
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grep -qs "^ *$1:" /proc/net/dev && {
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append args "-I $1"
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append ifaces "$1"
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}
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}
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resolve_network() {
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local ifn
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config_get ifn "$1" ifname
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resolve_ifname "$ifn"
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}
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local net networks
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config_get networks "$cfg" network
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for net in $networks; do
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resolve_network "$net"
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done
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local ifn ifnames
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config_get ifnames "$cfg" ifname
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for ifn in $ifnames; do
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resolve_ifname "$ifn"
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done
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local gateway
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config_get gateway "$cfg" gateway
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[ -n "$gateway" ] && append args "-G $gateway"
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local expiry # = 30
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config_get expiry "$cfg" expiry
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[ -n "$expiry" ] && append args "-t $expiry"
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local retry # = 5
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config_get retry "$cfg" retry
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[ -n "$retry" ] && append args "-p $retry"
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local table # = 16800
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config_get table "$cfg" table
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[ -n "$table" ] && append args "-T $table"
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local fwd_bcast # = 1
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config_get_bool fwd_bcast "$cfg" forward_bcast 1
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[ $fwd_bcast -eq 1 ] && append args "-B"
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local fwd_dhcp # = 1
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config_get_bool fwd_dhcp "$cfg" forward_dhcp 1
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[ $fwd_dhcp -eq 1 ] && append args "-D"
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start-stop-daemon -b -S -m -p /var/run/$link.pid \
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-x /usr/sbin/relayd -- $args
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uci_set_state network "$cfg" device "$ifaces"
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env -i ACTION="ifup" DEVICE="$link" INTERFACE="$cfg" PROTO="relay" \
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/sbin/hotplug-call iface
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}
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stop_interface_relay() {
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local cfg="$1"
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local link="relay-$cfg"
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env -i ACTION="ifdown" DEVICE="$link" INTERFACE="$cfg" PROTO="relay" \
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/sbin/hotplug-call iface
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service_kill relayd "/var/run/$link.pid"
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}
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