DTLS: handle (certificate) fragments (#1811)

Keep using the existing function to handle reassembling buffer: rename
it from `ndpi_search_tls_tcp_memory` to
`ndpi_search_tls_memory` and make it "transport" agnostic

2 files changed, 14 insertions, 11 deletions

diff --git a/tests/pcap/dtls_certificate_fragments.pcap b/tests/pcap/dtls_certificate_fragments.pcap
index 5551b5cab..869c60229 100644
--- a/tests/pcap/dtls_certificate_fragments.pcap
+++ b/tests/pcap/dtls_certificate_fragments.pcap
diff --git a/tests/result/dtls_certificate_fragments.pcap.out b/tests/result/dtls_certificate_fragments.pcap.out
index 970818d21..ed275fa88 100644
--- a/tests/result/dtls_certificate_fragments.pcap.out
+++ b/tests/result/dtls_certificate_fragments.pcap.out
@@ -1,29 +1,32 @@
 Guessed flow protos:	0
 
-DPI Packets (UDP):	4	(4.00 pkts/flow)
-Confidence DPI              : 1 (flows)
-Num dissector calls: 2 (2.00 diss/flow)
+DPI Packets (UDP):	9	(4.50 pkts/flow)
+Confidence DPI              : 2 (flows)
+Num dissector calls: 4 (2.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)
 LRU cache stun:       0/0/0 (insert/search/found)
-LRU cache tls_cert:   0/3/0 (insert/search/found)
+LRU cache tls_cert:   0/6/0 (insert/search/found)
 LRU cache mining:     0/0/0 (insert/search/found)
 LRU cache msteams:    0/0/0 (insert/search/found)
-Automa host:          0/0 (search/found)
-Automa domain:        0/0 (search/found)
-Automa tls cert:      0/0 (search/found)
+Automa host:          3/1 (search/found)
+Automa domain:        3/0 (search/found)
+Automa tls cert:      1/0 (search/found)
 Automa risk mask:     0/0 (search/found)
 Automa common alpns:  0/0 (search/found)
-Patricia risk mask:   2/0 (search/found)
+Patricia risk mask:   4/0 (search/found)
 Patricia risk:        0/0 (search/found)
-Patricia protocols:   1/1 (search/found)
+Patricia protocols:   2/2 (search/found)
 
 DTLS	20	5978	1
+Discord	6	4215	1
 
 JA3 Host Stats: 
 		 IP Address                  	 # JA3C     
-	1	 10.186.198.149           	 1      
+	1	 192.168.1.26             	 1      
+	2	 10.186.198.149           	 1      
 
 
-	1	UDP 10.186.198.149:39347 <-> 35.210.59.134:44443 [proto: 30/DTLS][IP: 284/GoogleCloud][Encrypted][Confidence: DPI][cat: Web/5][11 pkts/2624 bytes <-> 9 pkts/3354 bytes][Goodput ratio: 82/89][2.92 sec][bytes ratio: -0.122 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 0/0 324/76 2179/186 659/75][Pkt Len c2s/s2c min/avg/max/stddev: 167/90 239/373 416/1454 97/388][Risk: ** Weak TLS Cipher **** TLS (probably) Not Carrying HTTPS **** Missing SNI TLS Extn **][Risk Score: 160][Risk Info: No ALPN / Cipher TLS_RSA_WITH_AES_256_CBC_SHA][DTLSv1.2][JA3C: 3c3d129780d0066cd8936a6291a8d44f][JA3S: d45798bc098cd930de7eb2f5f866e994 (WEAK)][Firefox][Cipher: TLS_RSA_WITH_AES_256_CBC_SHA][PLAIN TEXT (Opera Software ASA1)][Plen Bins: 0,5,0,35,5,10,10,0,10,10,5,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0]
+	1	UDP 10.186.198.149:39347 <-> 35.210.59.134:44443 [proto: 30/DTLS][IP: 284/GoogleCloud][Encrypted][Confidence: DPI][cat: Web/5][11 pkts/2624 bytes <-> 9 pkts/3354 bytes][Goodput ratio: 82/89][2.92 sec][bytes ratio: -0.122 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 0/0 324/76 2179/186 659/75][Pkt Len c2s/s2c min/avg/max/stddev: 167/90 239/373 416/1454 97/388][Risk: ** Weak TLS Cipher **** TLS (probably) Not Carrying HTTPS **** Missing SNI TLS Extn **** TLS Cert About To Expire **][Risk Score: 210][Risk Info: No ALPN / Cipher TLS_RSA_WITH_AES_256_CBC_SHA / 25/Apr/2019 09:58:06 - 25/May/2019 09:58:06][DTLSv1.2][JA3C: 3c3d129780d0066cd8936a6291a8d44f][ServerNames: *.samsungmax.com,*.opera-mini.net][JA3S: d45798bc098cd930de7eb2f5f866e994 (WEAK)][Issuer: C=NO, ST=Oslo, L=Oslo, O=Opera Software ASA, OU=Opera Max, CN=Opera Max CA][Subject: C=NO, ST=Oslo, L=Oslo, O=Opera Software ASA, OU=Opera Max, CN=*.opera-mini.net, C=NO, ST=Oslo, L=Oslo, O=Opera Software ASA, OU=Opera Max, CN=Opera Max CA][Certificate SHA-1: 2F:5F:33:93:DE:4E:8B:EA:87:19:43:1A:7A:28:C2:33:FB:10:B3:A0][Firefox][Validity: 2019-04-25 09:58:06 - 2019-05-25 09:58:06][Cipher: TLS_RSA_WITH_AES_256_CBC_SHA][PLAIN TEXT (Opera Software ASA1)][Plen Bins: 0,5,0,35,5,10,10,0,10,10,5,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0]
+	2	UDP 192.168.1.26:43594 <-> 104.153.87.149:50001 [proto: 30.58/DTLS.Discord][IP: 58/Discord][Encrypted][Confidence: DPI][cat: Collaborative/15][3 pkts/1015 bytes <-> 3 pkts/3200 bytes][Goodput ratio: 88/96][0.13 sec][bytes ratio: -0.518 (Download)][IAT c2s/s2c min/avg/max/stddev: 29/44 44/22 59/44 15/22][Pkt Len c2s/s2c min/avg/max/stddev: 197/621 338/1067 621/1322 200/316][Risk: ** TLS (probably) Not Carrying HTTPS **** Missing SNI TLS Extn **][Risk Score: 60][Risk Info: No ALPN][DTLSv1.2][JA3C: 681eb4fb79ccb6d60d35fa502c279d42][ServerNames: *.discord.gg,discord.gg][JA3S: 201fdaa63db9a086f36651aa4cfd0819][Issuer: C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA][Subject: CN=*.discord.gg][Certificate SHA-1: 0C:A2:45:E6:4A:06:B0:31:C6:BF:B6:C5:1B:AE:A0:A3:8E:41:B2:3C][Validity: 2020-03-26 00:00:00 - 2022-06-28 00:00:00][Cipher: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256][PLAIN TEXT (Greater Manchester1)][Plen Bins: 0,0,0,0,33,0,0,0,0,0,0,0,0,0,0,0,0,0,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,0,0,16,0,0,0,0,0,0,0]