Add support for ICloud Private Relay (#1390)

See:
https://www.apple.com/privacy/docs/iCloud_Private_Relay_Overview_Dec2021.PDF

TODO: an up-to-date list of egress IP ranges is publicly available. Can
we use it somehow?

3 files changed, 7 insertions, 2 deletions

diff --git a/src/include/ndpi_protocol_ids.h b/src/include/ndpi_protocol_ids.h
index 2bd3a25f0..55ea4fff3 100644
--- a/src/include/ndpi_protocol_ids.h
+++ b/src/include/ndpi_protocol_ids.h
@@ -305,6 +305,7 @@ typedef enum {
   NDPI_PROTOCOL_ALIBABA               = 274,
   NDPI_PROTOCOL_CRASHLYSTICS          = 275,
   NDPI_PROTOCOL_MICROSOFT_AZURE       = 276,
+  NDPI_PROTOCOL_ICLOUD_PRIVATE_RELAY  = 277,
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_protocol_ids.h"
diff --git a/src/lib/ndpi_content_match.c.inc b/src/lib/ndpi_content_match.c.inc
index 3edef2ab3..8d82632cb 100644
--- a/src/lib/ndpi_content_match.c.inc
+++ b/src/lib/ndpi_content_match.c.inc
@@ -10078,6 +10078,10 @@ static ndpi_protocol_match host_match[] =
    { ".aliyuncs.com",                 "Alibaba", NDPI_PROTOCOL_ALIBABA, NDPI_PROTOCOL_CATEGORY_WEB, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
    { ".mmstat.com",                   "Alibaba", NDPI_PROTOCOL_ALIBABA, NDPI_PROTOCOL_CATEGORY_WEB, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
 
+   { "mask.icloud.com",               "iCloudPrivateRelay", NDPI_PROTOCOL_ICLOUD_PRIVATE_RELAY, NDPI_PROTOCOL_CATEGORY_VPN, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
+   { "mask-h2.icloud.com",            "iCloudPrivateRelay", NDPI_PROTOCOL_ICLOUD_PRIVATE_RELAY, NDPI_PROTOCOL_CATEGORY_VPN, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
+   { "mask-api.icloud.com",           "iCloudPrivateRelay", NDPI_PROTOCOL_ICLOUD_PRIVATE_RELAY, NDPI_PROTOCOL_CATEGORY_VPN, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_DEFAULT_LEVEL },
+
    { NULL, NULL, NDPI_PROTOCOL_UNKNOWN, NDPI_PROTOCOL_CATEGORY_UNSPECIFIED, NDPI_PROTOCOL_SAFE, NDPI_PROTOCOL_DEFAULT_LEVEL }
   };
 
diff --git a/tests/result/synscan.pcap.out b/tests/result/synscan.pcap.out
index 4ffaa04ed..c55647379 100644
--- a/tests/result/synscan.pcap.out
+++ b/tests/result/synscan.pcap.out
@@ -101,7 +101,7 @@ iSCSI	2	116	2
 	43	TCP 172.16.0.8:36050 -> 64.13.134.52:2605 [proto: 13/BGP][ClearText][cat: Network/14][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	44	TCP 172.16.0.8:36050 -> 64.13.134.52:3000 [proto: 26/ntop][ClearText][cat: Network/14][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	45	TCP 172.16.0.8:36050 -> 64.13.134.52:3128 [proto: 131/HTTP_Proxy][ClearText][cat: Web/5][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
-	46	TCP 172.16.0.8:36050 -> 64.13.134.52:3260 [proto: 277/iSCSI][ClearText][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+	46	TCP 172.16.0.8:36050 -> 64.13.134.52:3260 [proto: 278/iSCSI][ClearText][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	47	TCP 172.16.0.8:36050 -> 64.13.134.52:3306 [proto: 20/MySQL][ClearText][cat: Database/11][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	48	TCP 172.16.0.8:36050 -> 64.13.134.52:3389 [proto: 88/RDP][ClearText][cat: RemoteAccess/12][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Desktop/File Sharing Session **][Risk Score: 10][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	49	TCP 172.16.0.8:36050 -> 64.13.134.52:4343 [proto: 170/Whois-DAS][ClearText][cat: Network/14][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
@@ -162,7 +162,7 @@ iSCSI	2	116	2
 	104	TCP 172.16.0.8:36051 -> 64.13.134.52:2605 [proto: 13/BGP][ClearText][cat: Network/14][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	105	TCP 172.16.0.8:36051 -> 64.13.134.52:3000 [proto: 26/ntop][ClearText][cat: Network/14][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	106	TCP 172.16.0.8:36051 -> 64.13.134.52:3128 [proto: 131/HTTP_Proxy][ClearText][cat: Web/5][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
-	107	TCP 172.16.0.8:36051 -> 64.13.134.52:3260 [proto: 277/iSCSI][ClearText][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+	107	TCP 172.16.0.8:36051 -> 64.13.134.52:3260 [proto: 278/iSCSI][ClearText][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	108	TCP 172.16.0.8:36051 -> 64.13.134.52:3306 [proto: 20/MySQL][ClearText][cat: Database/11][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	109	TCP 172.16.0.8:36051 -> 64.13.134.52:3389 [proto: 88/RDP][ClearText][cat: RemoteAccess/12][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Desktop/File Sharing Session **][Risk Score: 10][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	110	TCP 172.16.0.8:36051 -> 64.13.134.52:4343 [proto: 170/Whois-DAS][ClearText][cat: Network/14][1 pkts/58 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]