net: More accurate IP address validation and IPv6 dotted notation.
* Added isIP method to make use of inet_pton to cares_wrap.cc * Modified net.isIP() to make use of new C++ isIP method. * Added new tests to test-net-isip.js. This is a back-port of commit fb6377e from the master branch.
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23
lib/net.js
23
lib/net.js
@ -24,6 +24,7 @@ var Stream = require('stream');
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var timers = require('timers');
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var util = require('util');
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var assert = require('assert');
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var cares = process.binding('cares_wrap');
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var cluster;
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function noop() {}
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@ -1091,27 +1092,7 @@ Server.prototype._setupSlave = function(socketList) {
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// TODO: isIP should be moved to the DNS code. Putting it here now because
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// this is what the legacy system did.
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// NOTE: This does not accept IPv6 with an IPv4 dotted address at the end,
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// and it does not detect more than one double : in a string.
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exports.isIP = function(input) {
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if (!input) {
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return 0;
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} else if (/^(\d?\d?\d)\.(\d?\d?\d)\.(\d?\d?\d)\.(\d?\d?\d)$/.test(input)) {
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var parts = input.split('.');
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for (var i = 0; i < parts.length; i++) {
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var part = parseInt(parts[i]);
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if (part < 0 || 255 < part) {
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return 0;
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}
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}
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return 4;
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} else if (/^::|^::1|^([a-fA-F0-9]{1,4}::?){1,7}([a-fA-F0-9]{1,4})$/.test(
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input)) {
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return 6;
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} else {
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return 0;
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}
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};
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exports.isIP = cares.isIP;
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exports.isIPv4 = function(input) {
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@ -685,6 +685,24 @@ void AfterGetAddrInfo(uv_getaddrinfo_t* req, int status, struct addrinfo* res) {
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}
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static Handle<Value> IsIP(const Arguments& args) {
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HandleScope scope;
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String::AsciiValue ip(args[0]);
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char address_buffer[sizeof(struct in6_addr)];
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if (uv_inet_pton(AF_INET, *ip, &address_buffer) == 1) {
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return scope.Close(v8::Integer::New(4));
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}
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if (uv_inet_pton(AF_INET6, *ip, &address_buffer) == 1) {
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return scope.Close(v8::Integer::New(6));
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}
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return scope.Close(v8::Integer::New(0));
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}
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static Handle<Value> GetAddrInfo(const Arguments& args) {
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HandleScope scope;
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@ -750,6 +768,7 @@ static void Initialize(Handle<Object> target) {
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NODE_SET_METHOD(target, "getHostByName", QueryWithFamily<GetHostByNameWrap>);
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NODE_SET_METHOD(target, "getaddrinfo", GetAddrInfo);
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NODE_SET_METHOD(target, "isIP", IsIP);
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target->Set(String::NewSymbol("AF_INET"), Integer::New(AF_INET));
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target->Set(String::NewSymbol("AF_INET6"), Integer::New(AF_INET6));
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@ -31,7 +31,20 @@ assert.equal(net.isIP('0000:0000:0000:0000:0000:0000:0000:0000::0000'), 0);
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assert.equal(net.isIP('1050:0:0:0:5:600:300c:326b'), 6);
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assert.equal(net.isIP('2001:252:0:1::2008:6'), 6);
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assert.equal(net.isIP('2001:dead:beef:1::2008:6'), 6);
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assert.equal(net.isIP('2001::'), 6);
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assert.equal(net.isIP('2001:dead::'), 6);
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assert.equal(net.isIP('2001:dead:beef::'), 6);
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assert.equal(net.isIP('2001:dead:beef:1::'), 6);
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assert.equal(net.isIP('ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff'), 6);
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assert.equal(net.isIP(':2001:252:0:1::2008:6:'), 0);
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assert.equal(net.isIP(':2001:252:0:1::2008:6'), 0);
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assert.equal(net.isIP('2001:252:0:1::2008:6:'), 0);
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assert.equal(net.isIP('2001:252::1::2008:6'), 0);
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assert.equal(net.isIP('::2001:252:1:2008:6'), 6);
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assert.equal(net.isIP('::2001:252:1:1.1.1.1'), 6);
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assert.equal(net.isIP('::2001:252:1:255.255.255.255'), 6);
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assert.equal(net.isIP('::2001:252:1:255.255.255.255.76'), 0);
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assert.equal(net.isIP('::anything'), 0);
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assert.equal(net.isIP('::1'), 6);
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assert.equal(net.isIP('::'), 6);
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assert.equal(net.isIP('0000:0000:0000:0000:0000:0000:12345:0000'), 0);
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