OpenWrt – Rev 3
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# 1: destination variable
# 2: interface
# 3: path
# 4: separator
# 5: limit
__network_ifstatus() {
local __tmp
[ -z "$__NETWORK_CACHE" ] && {
__tmp="$(ubus call network.interface dump 2>&1)"
case "$?" in
4) : ;;
0) export __NETWORK_CACHE="$__tmp" ;;
*) echo "$__tmp" >&2 ;;
esac
}
__tmp="$(jsonfilter ${4:+-F "$4"} ${5:+-l "$5"} -s "${__NETWORK_CACHE:-{}}" -e "$1=@.interface${2:+[@.interface='$2']}$3")"
[ -z "$__tmp" ] && \
unset "$1" && \
return 1
eval "$__tmp"
}
# determine first IPv4 address of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddr() {
__network_ifstatus "$1" "$2" "['ipv4-address'][0].address";
}
# determine first IPv6 address of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddr6() {
__network_ifstatus "$1" "$2" "['ipv6-address'][0].address" || \
__network_ifstatus "$1" "$2" "['ipv6-prefix-assignment'][0]['local-address'].address" || \
return 1
}
# determine first IPv4 subnet of given logical interface
# 1: destination variable
# 2: interface
network_get_subnet() {
__network_ifstatus "$1" "$2" "['ipv4-address'][0]['address','mask']" "/"
}
# determine first IPv6 subnet of given logical interface
# 1: destination variable
# 2: interface
network_get_subnet6() {
local __nets __addr
if network_get_subnets6 __nets "$2"; then
# Attempt to return first non-fe80::/10, non-fc::/7 range
for __addr in $__nets; do
case "$__addr" in fe[8ab]?:*|f[cd]??:*)
continue
esac
export "$1=$__addr"
return 0
done
# Attempt to return first non-fe80::/10 range
for __addr in $__nets; do
case "$__addr" in fe[8ab]?:*)
continue
esac
export "$1=$__addr"
return 0
done
# Return first item
for __addr in $__nets; do
export "$1=$__addr"
return 0
done
fi
unset "$1"
return 1
}
# determine first IPv6 prefix of given logical interface
# 1: destination variable
# 2: interface
network_get_prefix6() {
__network_ifstatus "$1" "$2" "['ipv6-prefix'][0]['address','mask']" "/"
}
# determine all IPv4 addresses of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddrs() {
__network_ifstatus "$1" "$2" "['ipv4-address'][*].address"
}
# determine all IPv6 addresses of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddrs6() {
local __addr
local __list=""
if __network_ifstatus "__addr" "$2" "['ipv6-address'][*].address"; then
for __addr in $__addr; do
__list="${__list:+$__list }${__addr}"
done
fi
if __network_ifstatus "__addr" "$2" "['ipv6-prefix-assignment'][*]['local-address'].address"; then
for __addr in $__addr; do
__list="${__list:+$__list }${__addr}"
done
fi
if [ -n "$__list" ]; then
export "$1=$__list"
return 0
fi
unset "$1"
return 1
}
# determine all IP addresses of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddrs_all() {
local __addr __addr6
network_get_ipaddrs __addr "$2"
network_get_ipaddrs6 __addr6 "$2"
if [ -n "$__addr" -o -n "$__addr6" ]; then
export "$1=${__addr:+$__addr }$__addr6"
return 0
fi
unset "$1"
return 1
}
# determine all IPv4 subnets of given logical interface
# 1: destination variable
# 2: interface
network_get_subnets() {
__network_ifstatus "$1" "$2" "['ipv4-address'][*]['address','mask']" "/ "
}
# determine all IPv6 subnets of given logical interface
# 1: destination variable
# 2: interface
network_get_subnets6() {
local __addr __mask
local __list=""
if __network_ifstatus "__addr" "$2" "['ipv6-address'][*]['address','mask']" "/ "; then
for __addr in $__addr; do
__list="${__list:+$__list }${__addr}"
done
fi
if __network_ifstatus "__addr" "$2" "['ipv6-prefix-assignment'][*]['local-address'].address" && \
__network_ifstatus "__mask" "$2" "['ipv6-prefix-assignment'][*].mask"; then
for __addr in $__addr; do
__list="${__list:+$__list }${__addr}/${__mask%% *}"
__mask="${__mask#* }"
done
fi
if [ -n "$__list" ]; then
export "$1=$__list"
return 0
fi
unset "$1"
return 1
}
# determine all IPv6 prefixes of given logical interface
# 1: destination variable
# 2: interface
network_get_prefixes6() {
__network_ifstatus "$1" "$2" "['ipv6-prefix'][*]['address','mask']" "/ "
}
# determine IPv4 gateway of given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive gateway if "true" (optional)
network_get_gateway() {
__network_ifstatus "$1" "$2" ".route[@.target='0.0.0.0' && !@.table].nexthop" "" 1 && \
return 0
[ "$3" = 1 -o "$3" = "true" ] && \
__network_ifstatus "$1" "$2" ".inactive.route[@.target='0.0.0.0' && !@.table].nexthop" "" 1
}
# determine IPv6 gateway of given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive gateway if "true" (optional)
network_get_gateway6() {
__network_ifstatus "$1" "$2" ".route[@.target='::' && !@.table].nexthop" "" 1 && \
return 0
[ "$3" = 1 -o "$3" = "true" ] && \
__network_ifstatus "$1" "$2" ".inactive.route[@.target='::' && !@.table].nexthop" "" 1
}
# determine the DNS servers of the given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive servers if "true" (optional)
network_get_dnsserver() {
__network_ifstatus "$1" "$2" "['dns-server'][*]" && return 0
[ "$3" = 1 -o "$3" = "true" ] && \
__network_ifstatus "$1" "$2" ".inactive['dns-server'][*]"
}
# determine the domains of the given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive domains if "true" (optional)
network_get_dnssearch() {
__network_ifstatus "$1" "$2" "['dns-search'][*]" && return 0
[ "$3" = 1 -o "$3" = "true" ] && \
__network_ifstatus "$1" "$2" ".inactive['dns-search'][*]"
}
# 1: destination variable
# 2: addr
# 3: inactive
__network_wan()
{
__network_ifstatus "$1" "" \
"[@.route[@.target='$2' && !@.table]].interface" "" 1 && \
return 0
[ "$3" = 1 -o "$3" = "true" ] && \
__network_ifstatus "$1" "" \
"[@.inactive.route[@.target='$2' && !@.table]].interface" "" 1
}
# find the logical interface which holds the current IPv4 default route
# 1: destination variable
# 2: consider inactive default routes if "true" (optional)
network_find_wan() { __network_wan "$1" "0.0.0.0" "$2"; }
# find the logical interface which holds the current IPv6 default route
# 1: destination variable
# 2: consider inactive dafault routes if "true" (optional)
network_find_wan6() { __network_wan "$1" "::" "$2"; }
# test whether the given logical interface is running
# 1: interface
network_is_up()
{
local __up
__network_ifstatus "__up" "$1" ".up" && [ "$__up" = 1 ]
}
# determine the protocol of the given logical interface
# 1: destination variable
# 2: interface
network_get_protocol() { __network_ifstatus "$1" "$2" ".proto"; }
# determine the layer 3 linux network device of the given logical interface
# 1: destination variable
# 2: interface
network_get_device() { __network_ifstatus "$1" "$2" ".l3_device"; }
# determine the layer 2 linux network device of the given logical interface
# 1: destination variable
# 2: interface
network_get_physdev() { __network_ifstatus "$1" "$2" ".device"; }
# defer netifd actions on the given linux network device
# 1: device name
network_defer_device()
{
ubus call network.device set_state \
"$(printf '{ "name": "%s", "defer": true }' "$1")" 2>/dev/null
}
# continue netifd actions on the given linux network device
# 1: device name
network_ready_device()
{
ubus call network.device set_state \
"$(printf '{ "name": "%s", "defer": false }' "$1")" 2>/dev/null
}
# flush the internal value cache to force re-reading values from ubus
network_flush_cache() { unset __NETWORK_CACHE; }