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luci-base: properly handle undefined IPv6 local-address information

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If IPv6 prefix assignment is disabled, the "local-address" structure
might exist, but be empty which causes the adress formatting in the
network model class to bail out.

Verify the completeness of the "local-address" structure before using
it in order to avoid runtime errors.

Fixes #1657.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2018-03-02 14:42:52 +01:00
parent 852ec6e28b
commit bf49505ea0
1 changed files with 4 additions and 1 deletions
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5
modules/luci-base/luasrc/model/network.lua
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@ -1001,7 +1001,10 @@ function protocol.ip6addrs(self)
if type(addrs) == "table" then
for n, addr in ipairs(addrs) do
if type(addr["local-address"]) == "table" then
if type(addr["local-address"]) == "table" and
type(addr["local-address"].mask) == "number" and
type(addr["local-address"].address) == "string"
then
rv[#rv+1] = "%s/%d" %{
addr["local-address"].address,
addr["local-address"].mask