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openwrt-xburst/package/base-files/files/lib/functions/network.sh
2012-12-16 20:17:18 +00:00

324 lines
7.3 KiB
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. /usr/share/libubox/jshn.sh
__network_set_cache()
{
if [ -n "$3" ]; then
eval "export -- __NETWORK_CV_$1='$3'"
__NETWORK_CACHE="${__NETWORK_CACHE:+$__NETWORK_CACHE }__NETWORK_CV_$1"
elif json_get_var "__NETWORK_CV_$1" "$2"; then
__NETWORK_CACHE="${__NETWORK_CACHE:+$__NETWORK_CACHE }__NETWORK_CV_$1"
fi
}
__network_export()
{
local __v="__NETWORK_CV_$2"
eval "export -- \"$1=\${$__v:+\$$__v$3}\"; [ -n \"\${$__v+x}\" ]"
}
__network_parse_ifstatus()
{
local __iface="$1"
local __key="${__iface}"
local __tmp
local __old_ns
__network_export __tmp "${__key}__parsed" && return 0
__tmp="$(ubus call network.interface."$__iface" status 2>/dev/null)"
[ -n "$__tmp" ] || return 1
json_set_namespace "network" __old_ns
json_load "$__tmp"
__network_set_cache "${__key}__parsed" "" "1"
for __tmp in "" "_inactive"; do
__key="${__key}${__tmp}"
# parse addresses
local __family
for __family in 4 6; do
if json_get_type __tmp "ipv${__family}_address" && [ "$__tmp" = array ]; then
json_select "ipv${__family}_address"
if json_get_type __tmp 1 && [ "$__tmp" = object ]; then
json_select 1
__network_set_cache "${__key}_address${__family}" address
__network_set_cache "${__key}_mask${__family}" mask
json_select ".."
fi
json_select ".."
fi
done
# parse routes
if json_get_type __tmp route && [ "$__tmp" = array ]; then
json_select "route"
local __idx=1
while json_get_type __tmp "$__idx" && [ "$__tmp" = object ]; do
json_select "$((__idx++))"
json_get_var __tmp target
case "${__tmp}" in
0.0.0.0)
__network_set_cache "${__key}_gateway4" nexthop
;;
::)
__network_set_cache "${__key}_gateway6" nexthop
;;
esac
json_select ".."
done
json_select ".."
fi
# parse dns info
local __field
for __field in "dns_server" "dns_search"; do
if json_get_type __tmp "$__field" && [ "$__tmp" = array ]; then
json_select "$__field"
local __idx=1
local __dns=""
while json_get_type __tmp "$__idx" && [ "$__tmp" = string ]; do
json_get_var __tmp "$((__idx++))"
__dns="${__dns:+$__dns }$__tmp"
done
json_select ".."
if [ -n "$__dns" ]; then
__network_set_cache "${__key}_${__field}" "" "$__dns"
fi
fi
done
# parse up state, device and physdev
for __field in "up" "l3_device" "device"; do
if json_get_type __tmp "$__field"; then
__network_set_cache "${__key}_${__field}" "$__field"
fi
done
# descend into inactive table
json_get_type __tmp "inactive" && [ "$__tmp" = object ] && json_select "inactive"
done
json_cleanup
json_set_namespace "$__old_ns"
return 0
}
__network_ipaddr()
{
local __var="$1"
local __iface="$2"
local __family="$3"
local __prefix="$4"
local __tmp
__network_parse_ifstatus "$__iface" || return 1
if [ $__prefix -eq 1 ]; then
__network_export __tmp "${__iface}_mask${__family}" && \
__network_export "$__var" "${__iface}_address${__family}" "/$__tmp"
return $?
fi
__network_export "$__var" "${__iface}_address${__family}"
return $?
}
# determine IPv4 address of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddr() { __network_ipaddr "$1" "$2" 4 0; }
# determine IPv6 address of given logical interface
# 1: destination variable
# 2: interface
network_get_ipaddr6() { __network_ipaddr "$1" "$2" 6 0; }
# determine IPv4 subnet of given logical interface
# 1: destination variable
# 2: interface
network_get_subnet() { __network_ipaddr "$1" "$2" 4 1; }
# determine IPv6 subnet of given logical interface
# 1: destination variable
# 2: interface
network_get_subnet6() { __network_ipaddr "$1" "$2" 6 1; }
__network_gateway()
{
local __var="$1"
local __iface="$2"
local __family="$3"
local __inactive="$4"
__network_parse_ifstatus "$__iface" || return 1
if [ "$__inactive" = 1 -o "$__inactive" = "true" ]; then
__network_export "$__var" "${__iface}_inactive_gateway${__family}" && \
return 0
fi
__network_export "$__var" "${__iface}_gateway${__family}"
return $?
}
# determine IPv4 gateway of given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive gateway if "true" (optional)
network_get_gateway() { __network_gateway "$1" "$2" 4 "${3:-0}"; }
# determine IPv6 gateway of given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive gateway if "true" (optional)
network_get_gateway6() { __network_gateway "$1" "$2" 6 "${3:-0}"; }
__network_dns() {
local __var="$1"
local __iface="$2"
local __field="$3"
local __inactive="$4"
__network_parse_ifstatus "$__iface" || return 1
if [ "$__inactive" = 1 -o "$__inactive" = "true" ]; then
__network_export "$__var" "${__iface}_inactive_${__field}" && \
return 0
fi
__network_export "$__var" "${__iface}_${__field}"
return $?
}
# 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_dns "$1" "$2" dns_server "${3:-0}"; }
# determine the domains of the given logical interface
# 1: destination variable
# 2: interface
# 3: consider inactive domains if "true" (optional)
network_get_dnssearch() { __network_dns "$1" "$2" dns_search "${3:-0}"; }
__network_wan()
{
local __var="$1"
local __family="$2"
local __inactive="$3"
local __iface
for __iface in $(ubus list | sed -ne 's/^network\.interface\.//p'); do
if [ "$__iface" != loopback ]; then
if __network_gateway "$__var" "$__iface" "$__family" "$__inactive"; then
eval "export -- \"$__var=$__iface\""
return 0
fi
fi
done
eval "export -- \"$__var=\""
return 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 "$1" 4 "${2:-0}"; }
# 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 "$1" 6 "${2:-0}"; }
__network_device()
{
local __var="$1"
local __iface="$2"
local __field="$3"
__network_parse_ifstatus "$__iface" || return 1
__network_export "$__var" "${__iface}_${__field}"
return $?
}
# test whether the given logical interface is running
# 1: interface
network_is_up()
{
local __up
__network_device __up "$1" up && [ $__up -eq 1 ]
}
# determine the layer 3 linux network device of the given logical interface
# 1: destination variable
# 2: interface
network_get_device() { __network_device "$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_device "$1" "$2" device; }
__network_defer()
{
local __device="$1"
local __defer="$2"
json_init
json_add_string name "$__device"
json_add_boolean defer "$__defer"
ubus call network.device set_state "$(json_dump)" 2>/dev/null
}
# defer netifd actions on the given linux network device
# 1: device name
network_defer_device() { __network_defer "$1" 1; }
# continue netifd actions on the given linux network device
# 1: device name
network_ready_device() { __network_defer "$1" 0; }
# flush the internal value cache to force re-reading values from ubus
network_flush_cache()
{
local __tmp
for __tmp in $__NETWORK_CACHE __NETWORK_CACHE; do
unset "$__tmp"
done
}