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base-files: various enhancements to network.sh
- support reading inactive gateways and DNS information in network_get_gateway(), network_get_dnsserver() and network_get_dnssearch() by passing "true" as optional last argument - internally cache fetched values to speed up subsequent accesses to the same data, introduce network_flush_cache() to clear them - add some inline function documentation SVN-Revision: 34722
This commit is contained in:
Jo-Philipp Wich
parent
595b48be55
commit
1600ba99e4
@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
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include $(INCLUDE_DIR)/version.mk
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PKG_NAME:=base-files
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PKG_RELEASE:=120
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PKG_RELEASE:=121
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PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/
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PKG_BUILD_DEPENDS:=opkg/host
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@ -1,11 +1,40 @@
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. /usr/share/libubox/jshn.sh
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__network_switch_inactive()
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{
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local __tmp
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if [ "$1" = 0 ] || [ "$1" = false ]; then
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return 1
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fi
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json_get_type __tmp "inactive"
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if [ "$__tmp" = object ]; then
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json_select "inactive"
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fi
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}
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__network_set_cache()
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{
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__NETWORK_CACHE="${__NETWORK_CACHE:+$__NETWORK_CACHE }__NETWORK_CV_$1"
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eval "__NETWORK_CV_$1='\$$2'"
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}
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__network_get_cache()
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{
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eval "[ -n \"\${__NETWORK_CV_$1+x}\" ] && export -- \"$2=\$__NETWORK_CV_$1\""
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}
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__network_ipaddr()
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{
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local __var="$1"
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local __iface="$2"
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local __family="$3"
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local __prefix="${4:-0}"
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local __prefix="$4"
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local __key="ipaddr_${2}_${3}_${4}"
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__network_get_cache "$__key" "$__var" && return 0
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local __tmp="$(ubus call network.interface."$__iface" status 2>/dev/null)"
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@ -27,6 +56,7 @@ __network_ipaddr()
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eval "export -- \"$__var=\${$__var}/$__tmp\""
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}
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__network_set_cache "$__key" "$__var"
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return 0
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fi
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fi
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@ -34,10 +64,24 @@ __network_ipaddr()
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return 1
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}
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# determine IPv4 address of given logical interface
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# 1: destination variable
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# 2: interface
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network_get_ipaddr() { __network_ipaddr "$1" "$2" 4 0; }
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# determine IPv6 address of given logical interface
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# 1: destination variable
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# 2: interface
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network_get_ipaddr6() { __network_ipaddr "$1" "$2" 6 0; }
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# determine IPv4 subnet of given logical interface
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# 1: destination variable
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# 2: interface
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network_get_subnet() { __network_ipaddr "$1" "$2" 4 1; }
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# determine IPv6 subnet of given logical interface
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# 1: destination variable
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# 2: interface
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network_get_subnet6() { __network_ipaddr "$1" "$2" 6 1; }
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@ -46,16 +90,21 @@ __network_gateway()
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local __var="$1"
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local __iface="$2"
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local __family="$3"
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local __key="gateway_${2}_${3}"
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__network_get_cache "$__key" "$__var" && return 0
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local __tmp="$(ubus call network.interface."$__iface" status 2>/dev/null)"
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local __idx=1
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json_load "${__tmp:-{}}"
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for __tmp in 0 1; do
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if json_get_type __tmp route && [ "$__tmp" = array ]; then
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json_select route
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local __idx=1
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while json_get_type __tmp "$__idx" && [ "$__tmp" = object ]; do
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json_select "$((__idx++))"
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@ -64,6 +113,7 @@ __network_gateway()
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case "${__family}/${__tmp}" in
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4/0.0.0.0|6/::)
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json_get_var "$__var" nexthop
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__network_set_cache "$__key" "$__var"
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return $?
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;;
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esac
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@ -71,54 +121,96 @@ __network_gateway()
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json_select ".."
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done
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json_select ".."
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fi
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__network_switch_inactive "$4" || break
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done
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return 1
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}
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network_get_gateway() { __network_gateway "$1" "$2" 4; }
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network_get_gateway6() { __network_gateway "$1" "$2" 6; }
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# determine IPv4 gateway of given logical interface
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# 1: destination variable
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# 2: interface
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# 3: consider inactive gateway if "true" (optional)
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network_get_gateway() { __network_gateway "$1" "$2" 4 "${3:-0}"; }
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# determine IPv6 gateway of given logical interface
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# 1: destination variable
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# 2: interface
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# 3: consider inactive gateway if "true" (optional)
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network_get_gateway6() { __network_gateway "$1" "$2" 6 "${3:-0}"; }
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__network_dns() {
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local __var="$1"
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local __iface="$2"
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local __field="$3"
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local __key="dns_${2}_${3}"
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__network_get_cache "$__key" "$__var" && return 0
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local __tmp="$(ubus call network.interface."$__iface" status 2>/dev/null)"
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local __dns=""
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local __idx=1
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json_load "${__tmp:-{}}"
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for __tmp in 0 1; do
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if json_get_type __tmp "$__field" && [ "$__tmp" = array ]; then
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json_select "$__field"
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local __idx=1
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while json_get_type __tmp "$__idx" && [ "$__tmp" = string ]; do
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json_get_var __tmp "$((__idx++))"
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__dns="${__dns:+$__dns }$__tmp"
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done
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json_select ".."
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fi
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__network_switch_inactive "$4" || break
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done
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if [ -n "$__dns" ]; then
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eval "export -- \"$__var=$__dns\""
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[ -n "$__dns" ]
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__network_set_cache "$__key" "$__var"
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fi
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}
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network_get_dnsserver() { __network_dns "$1" "$2" dns_server; }
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network_get_dnssearch() { __network_dns "$1" "$2" dns_search; }
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# determine the DNS servers of the given logical interface
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# 1: destination variable
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# 2: interface
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# 3: consider inactive servers if "true" (optional)
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network_get_dnsserver() { __network_dns "$1" "$2" dns_server "${3:-0}"; }
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# determine the domains of the given logical interface
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# 1: destination variable
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# 2: interface
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# 3: consider inactive servers if "true" (optional)
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network_get_dnssearch() { __network_dns "$1" "$2" dns_search "${3:-0}"; }
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__network_wan() {
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local __var="$1"
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local __family="$2"
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local __key="wan_${2}"
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local __iface
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__network_get_cache "$__key" "$__var" && return 0
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for __iface in $(ubus list | sed -ne 's/^network\.interface\.//p'); do
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if __network_gateway "$__var" "$__iface" "$__family"; then
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eval "export -- \"$__var=$__iface\""
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__network_set_cache "$__key" "$__var"
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return 0
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fi
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done
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@ -127,7 +219,12 @@ __network_wan() {
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return 1
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}
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# find the logical interface which holds the current IPv4 default route
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# 1: destination variable
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network_find_wan() { __network_wan "$1" 4; }
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# find the logical interface which holds the current IPv6 default route
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# 1: destination variable
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network_find_wan6() { __network_wan "$1" 6; }
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@ -136,21 +233,33 @@ __network_device()
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local __var="$1"
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local __iface="$2"
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local __field="$3"
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local __key="device_${2}_${3}"
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__network_get_cache "$__key" "$__var" && return 0
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local __tmp="$(ubus call network.interface."$__iface" status 2>/dev/null)"
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[ -n "$__tmp" ] || return 1
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json_load "$__tmp"
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json_get_var "$__var" "$__field"
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json_get_var "$__var" "$__field" && __network_set_cache "$__key" "$__var"
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}
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# test whether the given logical interface is running
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# 1: interface
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network_is_up()
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{
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local __up
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__network_device __up "$1" up && [ $__up -eq 1 ]
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}
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# determine the layer 3 linux network device of the given logical interface
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# 1: destination variable
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# 2: interface
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network_get_device() { __network_device "$1" "$2" l3_device; }
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# determine the layer 2 linux network device of the given logical interface
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# 1: destination variable
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# 2: interface
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network_get_physdev() { __network_device "$1" "$2" device; }
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@ -166,5 +275,19 @@ __network_defer()
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ubus call network.device set_state "$(json_dump)" 2>/dev/null
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}
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# defer netifd actions on the given linux network device
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# 1: device name
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network_defer_device() { __network_defer "$1" 1; }
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# continue netifd actions on the given linux network device
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# 1: device name
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network_ready_device() { __network_defer "$1" 0; }
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# flush the internal value cache to force re-reading values from ubus
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network_flush_cache()
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{
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local __tmp
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for __tmp in $__NETWORK_CACHE __NETWORK_CACHE; do
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unset "$__tmp"
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done
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}
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