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Domain Classification Improvements (#2396)

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* Added
size_t ndpi_compress_str(const char * in, size_t len, char * out, size_t bufsize);
size_t ndpi_decompress_str(const char * in, size_t len, char * out, size_t bufsize);

used to compress short strings such as domain names. This code is based on
https://github.com/Ed-von-Schleck/shoco

* Major code rewrite for ndpi_hash and ndpi_domain_classify

* Improvements to make sure custom categories are loaded and enabled

* Fixed string encoding

* Extended SalesForce/Cloudflare domains list
This commit is contained in:
Luca Deri 2024-04-18 23:21:40 +02:00 • committed by GitHub
parent 108b8331d5
commit ad117bfaab
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65 changed files with 1194 additions and 612 deletions
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tests/cfgs/default/result/dns-exf.pcap.out
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@ -25,4 +25,4 @@ DNS 2 342 1
Acceptable 2 342 1
1 UDP 192.168.2.225:45290 <-> 192.168.2.134:53 [proto: 5/DNS][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/163 bytes <-> 1 pkts/179 bytes][Goodput ratio: 74/76][0.00 sec][Hostname/SNI: 4sicn03_2qaa3rlc3qudhh0aavjycxwakjehelu5klueow0zjxulgage-.4s2fgaaaa__-.test.txt][::][Risk: ** Susp DNS Traffic **** Non-Printable/Invalid Chars Detected **** Minor Issues **][Risk Score: 160][Risk Info: Long DNS host name / DNS Record with zero TTL][PLAIN TEXT (sICN03)][Plen Bins: 0,0,0,50,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
1 UDP 192.168.2.225:45290 <-> 192.168.2.134:53 [proto: 5/DNS][IP: 0/Unknown][ClearText][Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/163 bytes <-> 1 pkts/179 bytes][Goodput ratio: 74/76][0.00 sec][Hostname/SNI: 4sicn03_2qaa3rlc3qudhh0aavjycxwakjehelu5klueow0zjxulgage-.4s2fgaaaa__-.test.txt][::][Risk: ** Susp DNS Traffic **** Non-Printable/Invalid Chars Detected **** Minor Issues **][Risk Score: 160][Risk Info: Invalid chars detected in domain name / Long DNS host name / DNS Record with zero TTL][PLAIN TEXT (sICN03)][Plen Bins: 0,0,0,50,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]