fix: add ipv6Check regex for private address

Author: Marcus Pousette

packages/utils/src/private-ip.ts

@@ -41,6 +41,11 @@ function ipv4Check (ipAddr: string): boolean {
 function ipv6Check (ipAddr: string): boolean {
   return /^::$/.test(ipAddr) ||
     /^::1$/.test(ipAddr) ||
+    /^::f{4}:(0?a[0-9a-fA-F]{2}):([0-9a-fA-F]{1,4})$/.test(ipAddr) || // 10.0.0.0/8
+    /^::f{4}:(7f[0-9a-fA-F]{2}):([0-9a-fA-F]{1,4})$/.test(ipAddr) || // 127.0.0.0/8
+    /^::f{4}:(a9fe):([0-9a-fA-F]{1,4})$/.test(ipAddr) || // 169.254.0.0/16
+    /^::f{4}:(ac1[0-9a-fA-F]{1}|ac2[0-9a-fA-F]{1}|ac3[0-1a-fA-F]{1}):([0-9a-fA-F]{1,4})$/.test(ipAddr) || // 172.16.0.0/12
+    /^::f{4}:(c0a8):([0-9a-fA-F]{1,4})$/.test(ipAddr) || // 192.168.0.0/16
     /^::f{4}:([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/.test(ipAddr) ||
     /^::f{4}:0.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/.test(ipAddr) ||
     /^64:ff9b::([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/.test(ipAddr) ||

packages/utils/test/multiaddr/is-private.spec.ts

@@ -30,16 +30,28 @@ describe('multiaddr isPrivate', () => {
   it('identifies private ip6 multiaddrs', () => {
     [
       multiaddr('/ip6/fd52:8342:fc46:6c91:3ac9:86ff:fe31:7095/tcp/1000'),
-      multiaddr('/ip6/fd52:8342:fc46:6c91:3ac9:86ff:fe31:1/tcp/1000')
+      multiaddr('/ip6/fd52:8342:fc46:6c91:3ac9:86ff:fe31:1/tcp/1000'),
+      multiaddr('/ip6/::ffff:0a00:0001/tcp/1000'), // 10.0.0.1
+      multiaddr('/ip6/::ffff:ac10:0001/tcp/1000'), // 172.16.0.1
+      multiaddr('/ip6/::ffff:c0a8:0001/tcp/1000'), // 192.168.0.1
+      multiaddr('/ip6/::ffff:7f00:0001/tcp/1000') // 127.0.0.1
     ].forEach(ma => {
-      expect(isPrivate(ma)).to.eql(true)
+      try {
+        expect(isPrivate(ma)).to.eql(true)
+      } catch (error) {
+        throw new Error(`Failed for ${ma.toString()}`)
+      }
     })
   })
 
   it('identifies public ip6 multiaddrs', () => {
     [
       multiaddr('/ip6/2001:8a0:7ac5:4201:3ac9:86ff:fe31:7095/tcp/1000'),
-      multiaddr('/ip6/2000:8a0:7ac5:4201:3ac9:86ff:fe31:7095/tcp/1000')
+      multiaddr('/ip6/2000:8a0:7ac5:4201:3ac9:86ff:fe31:7095/tcp/1000'),
+      multiaddr('/ip6/::ffff:6500:1a5a/tcp/1000'), // 101.0.26.90
+      multiaddr('/ip6/::ffff:2801:1409/tcp/1000'), // 40.1.20.9
+      multiaddr('/ip6/::ffff:5ca8:0001/tcp/1000'), // 92.168.0.1 (not a private range)
+      multiaddr('/ip6/::ffff:0200:0010/tcp/1000') // 2.16.0.1 (not a private range)
     ].forEach(ma => {
       expect(isPrivate(ma)).to.eql(false)
     })