net.server_epoll: Add support for systemd socket activation
Allows creating listening sockets and accepting client connections
before Prosody starts.
This is unlike normal Prosody dynamic resource management, where ports
may added and removed at any time, and the ports defined by the config.
Weird things happen if these are closed (e.g. due to reload) so here we
prevent closing and ensure sockets are reused when opened again.
local ip = require "util.ip";
local new_ip = ip.new_ip;
local match = ip.match;
local parse_cidr = ip.parse_cidr;
local commonPrefixLength = ip.commonPrefixLength;
describe("util.ip", function()
describe("#match()", function()
it("should work", function()
local _ = new_ip;
local ip = _"10.20.30.40";
assert.are.equal(match(ip, _"10.0.0.0", 8), true);
assert.are.equal(match(ip, _"10.0.0.0", 16), false);
assert.are.equal(match(ip, _"10.0.0.0", 24), false);
assert.are.equal(match(ip, _"10.0.0.0", 32), false);
assert.are.equal(match(ip, _"10.20.0.0", 8), true);
assert.are.equal(match(ip, _"10.20.0.0", 16), true);
assert.are.equal(match(ip, _"10.20.0.0", 24), false);
assert.are.equal(match(ip, _"10.20.0.0", 32), false);
assert.are.equal(match(ip, _"0.0.0.0", 32), false);
assert.are.equal(match(ip, _"0.0.0.0", 0), true);
assert.are.equal(match(ip, _"0.0.0.0"), false);
assert.are.equal(match(ip, _"10.0.0.0", 255), false, "excessive number of bits");
assert.are.equal(match(ip, _"10.0.0.0", -8), true, "negative number of bits");
assert.are.equal(match(ip, _"10.0.0.0", -32), true, "negative number of bits");
assert.are.equal(match(ip, _"10.0.0.0", 0), true, "zero bits");
assert.are.equal(match(ip, _"10.0.0.0"), false, "no specified number of bits (differing ip)");
assert.are.equal(match(ip, _"10.20.30.40"), true, "no specified number of bits (same ip)");
assert.are.equal(match(_"127.0.0.1", _"127.0.0.1"), true, "simple ip");
assert.are.equal(match(_"8.8.8.8", _"8.8.0.0", 16), true);
assert.are.equal(match(_"8.8.4.4", _"8.8.0.0", 16), true);
assert.are.equal(match(_"fe80::1", _"fec0::", 10), false);
end);
end);
describe("#parse_cidr()", function()
it("should work", function()
assert.are.equal(new_ip"0.0.0.0", new_ip"0.0.0.0")
local function assert_cidr(cidr, ip, bits)
local parsed_ip, parsed_bits = parse_cidr(cidr);
assert.are.equal(new_ip(ip), parsed_ip, cidr.." parsed ip is "..ip);
assert.are.equal(bits, parsed_bits, cidr.." parsed bits is "..tostring(bits));
end
assert_cidr("0.0.0.0", "0.0.0.0", nil);
assert_cidr("127.0.0.1", "127.0.0.1", nil);
assert_cidr("127.0.0.1/0", "127.0.0.1", 0);
assert_cidr("127.0.0.1/8", "127.0.0.1", 8);
assert_cidr("127.0.0.1/32", "127.0.0.1", 32);
assert_cidr("127.0.0.1/256", "127.0.0.1", 256);
assert_cidr("::/48", "::", 48);
end);
end);
describe("#new_ip()", function()
it("should work", function()
local v4, v6 = "IPv4", "IPv6";
local function assert_proto(s, proto)
local ip = new_ip(s);
if proto then
assert.are.equal(ip and ip.proto, proto, "protocol is correct for "..("%q"):format(s));
else
assert.are.equal(ip, nil, "address is invalid");
end
end
assert_proto("127.0.0.1", v4);
assert_proto("::1", v6);
assert_proto("", nil);
assert_proto("abc", nil);
assert_proto(" ", nil);
end);
end);
describe("#commonPrefixLength()", function()
it("should work", function()
local function assert_cpl6(a, b, len, v4)
local ipa, ipb = new_ip(a), new_ip(b);
if v4 then len = len+96; end
assert.are.equal(commonPrefixLength(ipa, ipb), len, "common prefix length of "..a.." and "..b.." is "..len);
assert.are.equal(commonPrefixLength(ipb, ipa), len, "common prefix length of "..b.." and "..a.." is "..len);
end
local function assert_cpl4(a, b, len)
return assert_cpl6(a, b, len, "IPv4");
end
assert_cpl4("0.0.0.0", "0.0.0.0", 32);
assert_cpl4("255.255.255.255", "0.0.0.0", 0);
assert_cpl4("255.255.255.255", "255.255.0.0", 16);
assert_cpl4("255.255.255.255", "255.255.255.255", 32);
assert_cpl4("255.255.255.255", "255.255.255.255", 32);
assert_cpl6("::1", "::1", 128);
assert_cpl6("abcd::1", "abcd::1", 128);
assert_cpl6("abcd::abcd", "abcd::", 112);
assert_cpl6("abcd::abcd", "abcd::abcd:abcd", 96);
assert_cpl6("fe80::1", "fec0::", 9);
end);
end);
describe("#truncate()", function ()
it("should work for IPv4", function ()
local ip1 = ip.new_ip("192.168.0.1");
local ip2 = ip.truncate(ip1, 16);
assert.truthy(ip.is_ip(ip2));
assert.equal("192.168.0.0", ip2.normal);
assert.equal("192.168.0.1", ip1.normal); -- original unmodified
end);
it("should work for IPv6", function ()
local ip1 = ip.new_ip("2001:db8::ff00:42:8329");
local ip2 = ip.truncate(ip1, 24);
assert.truthy(ip.is_ip(ip2));
assert.equal("2001:d00::", ip2.normal);
assert.equal("2001:db8::ff00:42:8329", ip1.normal); -- original unmodified
end);
it("accepts a string", function ()
assert.equal("127.0.0.0", ip.truncate("127.0.0.1", 8).normal);
end);
end);
end);