net: allow net.BlockList to use net.SocketAddress objects

Signed-off-by: James M Snell <jasnell@gmail.com>

PR-URL: nodejs#37917
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

doc/api/net.md

@@ -69,8 +69,8 @@ IP subnets.
 added: REPLACEME
 -->
 
-* `address` {string} An IPv4 or IPv6 address.
-* `type` {string} Either `'ipv4'` or `'ipv6'`. **Default**: `'ipv4'`.
+* `address` {string|net.SocketAddress} An IPv4 or IPv6 address.
+* `type` {string} Either `'ipv4'` or `'ipv6'`. **Default:** `'ipv4'`.
 
 Adds a rule to block the given IP address.
 
@@ -79,9 +79,10 @@ Adds a rule to block the given IP address.
 added: REPLACEME
 -->
 
-* `start` {string} The starting IPv4 or IPv6 address in the range.
-* `end` {string} The ending IPv4 or IPv6 address in the range.
-* `type` {string} Either `'ipv4'` or `'ipv6'`. **Default**: `'ipv4'`.
+* `start` {string|net.SocketAddress} The starting IPv4 or IPv6 address in the
+  range.
+* `end` {string|net.SocketAddress} The ending IPv4 or IPv6 address in the range.
+* `type` {string} Either `'ipv4'` or `'ipv6'`. **Default:** `'ipv4'`.
 
 Adds a rule to block a range of IP addresses from `start` (inclusive) to
 `end` (inclusive).
@@ -91,7 +92,7 @@ Adds a rule to block a range of IP addresses from `start` (inclusive) to
 added: REPLACEME
 -->
 
-* `net` {string} The network IPv4 or IPv6 address.
+* `net` {string|net.SocketAddress} The network IPv4 or IPv6 address.
 * `prefix` {number} The number of CIDR prefix bits. For IPv4, this
   must be a value between `0` and `32`. For IPv6, this must be between
   `0` and `128`.
@@ -104,8 +105,8 @@ Adds a rule to block a range of IP addresses specified as a subnet mask.
 added: REPLACEME
 -->
 
-* `address` {string} The IP address to check
-* `type` {string} Either `'ipv4'` or `'ipv6'`. **Default**: `'ipv4'`.
+* `address` {string|net.SocketAddress} The IP address to check
+* `type` {string} Either `'ipv4'` or `'ipv6'`. **Default:** `'ipv4'`.
 * Returns: {boolean}
 
 Returns `true` if the given IP address matches any of the rules added to the

lib/internal/blocklist.js

@@ -8,14 +8,17 @@ const {
 
 const {
   BlockList: BlockListHandle,
-  AF_INET,
-  AF_INET6,
 } = internalBinding('block_list');
 
 const {
   customInspectSymbol: kInspect,
 } = require('internal/util');
 
+const {
+  SocketAddress,
+  kHandle: kSocketAddressHandle,
+} = require('internal/socketaddress');
+
 const {
   JSTransferable,
   kClone,
@@ -55,56 +58,76 @@ class BlockList extends JSTransferable {
   }
 
   addAddress(address, family = 'ipv4') {
-    validateString(address, 'address');
-    validateString(family, 'family');
-    family = family.toLowerCase();
-    if (family !== 'ipv4' && family !== 'ipv6')
-      throw new ERR_INVALID_ARG_VALUE('family', family);
-    const type = family === 'ipv4' ? AF_INET : AF_INET6;
-    this[kHandle].addAddress(address, type);
+    if (!SocketAddress.isSocketAddress(address)) {
+      validateString(address, 'address');
+      validateString(family, 'family');
+      address = new SocketAddress({
+        address,
+        family,
+      });
+    }
+    this[kHandle].addAddress(address[kSocketAddressHandle]);
   }
 
   addRange(start, end, family = 'ipv4') {
-    validateString(start, 'start');
-    validateString(end, 'end');
-    validateString(family, 'family');
-    family = family.toLowerCase();
-    if (family !== 'ipv4' && family !== 'ipv6')
-      throw new ERR_INVALID_ARG_VALUE('family', family);
-    const type = family === 'ipv4' ? AF_INET : AF_INET6;
-    const ret = this[kHandle].addRange(start, end, type);
+    if (!SocketAddress.isSocketAddress(start)) {
+      validateString(start, 'start');
+      validateString(family, 'family');
+      start = new SocketAddress({
+        address: start,
+        family,
+      });
+    }
+    if (!SocketAddress.isSocketAddress(end)) {
+      validateString(end, 'end');
+      validateString(family, 'family');
+      end = new SocketAddress({
+        address: end,
+        family,
+      });
+    }
+    const ret = this[kHandle].addRange(
+      start[kSocketAddressHandle],
+      end[kSocketAddressHandle]);
     if (ret === false)
       throw new ERR_INVALID_ARG_VALUE('start', start, 'must come before end');
   }
 
   addSubnet(network, prefix, family = 'ipv4') {
-    validateString(network, 'network');
-    validateString(family, 'family');
-    family = family.toLowerCase();
-    let type;
-    switch (family) {
+    if (!SocketAddress.isSocketAddress(network)) {
+      validateString(network, 'network');
+      validateString(family, 'family');
+      network = new SocketAddress({
+        address: network,
+        family,
+      });
+    }
+    switch (network.family) {
       case 'ipv4':
-        type = AF_INET;
         validateInt32(prefix, 'prefix', 0, 32);
         break;
       case 'ipv6':
-        type = AF_INET6;
         validateInt32(prefix, 'prefix', 0, 128);
         break;
-      default:
-        throw new ERR_INVALID_ARG_VALUE('family', family);
     }
-    this[kHandle].addSubnet(network, type, prefix);
+    this[kHandle].addSubnet(network[kSocketAddressHandle], prefix);
   }
 
   check(address, family = 'ipv4') {
-    validateString(address, 'address');
-    validateString(family, 'family');
-    family = family.toLowerCase();
-    if (family !== 'ipv4' && family !== 'ipv6')
-      throw new ERR_INVALID_ARG_VALUE('family', family);
-    const type = family === 'ipv4' ? AF_INET : AF_INET6;
-    return Boolean(this[kHandle].check(address, type));
+    if (!SocketAddress.isSocketAddress(address)) {
+      validateString(address, 'address');
+      validateString(family, 'family');
+      try {
+        address = new SocketAddress({
+          address,
+          family,
+        });
+      } catch {
+        // Ignore the error. If it's not a valid address, return false.
+        return false;
+      }
+    }
+    return Boolean(this[kHandle].check(address[kSocketAddressHandle]));
   }
 
   get rules() {

lib/internal/socketaddress.js

@@ -47,14 +47,16 @@ class SocketAddress extends JSTransferable {
   constructor(options = {}) {
     super();
     validateObject(options, 'options');
+    let { family = 'ipv4' } = options;
     const {
-      family = 'ipv4',
       address = (family === 'ipv4' ? '127.0.0.1' : '::'),
       port = 0,
       flowlabel = 0,
     } = options;
 
     let type;
+    if (typeof family?.toLowerCase === 'function')
+      family = family.toLowerCase();
     switch (family) {
       case 'ipv4':
         type = AF_INET;
@@ -63,7 +65,7 @@ class SocketAddress extends JSTransferable {
         type = AF_INET6;
         break;
       default:
-        throw new ERR_INVALID_ARG_VALUE('options.family', family);
+        throw new ERR_INVALID_ARG_VALUE('options.family', options.family);
     }
 
     validateString(address, 'options.address');
@@ -150,4 +152,5 @@ ObjectSetPrototypeOf(InternalSocketAddress.prototype, SocketAddress.prototype);
 module.exports = {
   SocketAddress,
   InternalSocketAddress,
+  kHandle,
 };