diff options
Diffstat (limited to 'libs/core/luasrc/ip.lua')
| -rw-r--r-- | libs/core/luasrc/ip.lua | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/libs/core/luasrc/ip.lua b/libs/core/luasrc/ip.lua index 68ac384dc..e6de08f1b 100644 --- a/libs/core/luasrc/ip.lua +++ b/libs/core/luasrc/ip.lua @@ -322,17 +322,20 @@ function cidr.prefix( self, mask ) return prefix end -function cidr.network( self ) +function cidr.network( self, bits ) local data = { } + bits = bits or self[3] - for i = 1, math.floor( self[3] / 16 ) do + for i = 1, math.floor( bits / 16 ) do table.insert( data, self[2][i] ) end - table.insert( data, bit.band( self[2][1+#data], __mask16(self[3]) ) ) + if #data < #self[2] then + table.insert( data, bit.band( self[2][1+#data], __mask16(bits) ) ) - for i = #data, #self[2] do - table.insert( data, 0 ) + for i = #data, #self[2] do + table.insert( data, 0 ) + end end return __bless({ self[1], data, __length(self[1]) }) @@ -350,10 +353,12 @@ function cidr.mask( self, bits ) table.insert( data, 0xFFFF ) end - table.insert( data, __mask16(bits) ) + if #data < #self[2] then + table.insert( data, __mask16(bits) ) - for i = #data + 1, #self[2] do - table.insert( data, 0 ) + for i = #data + 1, #self[2] do + table.insert( data, 0 ) + end end return __bless({ self[1], data, __length(self[1]) }) @@ -361,10 +366,9 @@ end function cidr.contains( self, addr ) assert( self[1] == addr[1], "Can't compare IPv4 and IPv6 addresses" ) - local mask1 = self:prefix() - local mask2 = addr:prefix() - if mask1 <= mask2 then - return self:mask(addr:prefix()) == mask2 + + if self:prefix() <= addr:prefix() then + return self:network() == addr:network(self:prefix()) end return false |