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* Reducing the size of the ndpi_detection_module_struct structure. (#1490)Vitaly Lavrov2022-03-27
| | | | | | | | | | | | | | The ndpi_detection_module_struct structure contains 5 arrays "struct ndpi_call_function_struct" size 286*144=41 kB size, which are occupied by a small number of elements. At the moment we have callback_buffer_size = 172, tcp_with_payload=114, tcp_no_payload=8, udp=93, other 8. NDPI_MAX_SUPPORTED_PROTOCOLS = 285. Size of struct ndpi_detection_module_struct is 253136 bytes. Size of all structs ndpi_call_function_struct 5*286*144=205920 bytes. Real use memory size for struct ndpi_call_function_struct is (173+224)*144=57168 bytes.
* Trying to improve QUIC reassembler (#1195) (#1489)Vinicius Silva Nogueira2022-03-24
| | | | | | | | | | | * handling QUIC out-of-order fragments * minor fix * updated quic_frags_ch_out_of_order_same_packet_craziness.pcapng.out * quic test: buf_len + last_pos * QUIC: comment update in __reassemble function and minor change is_ch_complete function
* Complete rework of nDPI Python bindings (cffi API, automatic generation, ↵aouinizied2022-03-22
| | | | packaging and CI integration)
* Extend tests coverage (#1476)Ivan Nardi2022-03-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now there is at least one flow under `tests/pcap` for 249 protocols out of the 284 ones supported by nDPI. The 35 protocols without any tests are: * P2P/sharing protocols: DIRECT_DOWNLOAD_LINK, OPENFT, FASTTRACK, EDONKEY, SOPCAST, THUNDER, APPLEJUICE, DIRECTCONNECT, STEALTHNET * games: CSGO, HALFLIFE2, ARMAGETRON, CROSSFIRE, DOFUS, FIESTA, FLORENSIA, GUILDWARS, MAPLESTORY, WORLD_OF_KUNG_FU * voip/streaming: VHUA, ICECAST, SHOUTCAST, TVUPLAYER, TRUPHONE * other: AYIYA, SOAP, TARGUS_GETDATA, RPC, ZMQ, REDIS, VMWARE, NOE, LOTUS_NOTES, EGP, SAP Most of these protocols (expecially the P2P and games ones) have been inherited by OpenDPI and have not been updated since then: even if they are still used, the detection rules might be outdated. However code coverage (of `lib/protocols`) only increases from 65.6% to 68.9%. Improve Citrix, Corba, Fix, Aimini, Megaco, PPStream, SNMP and Some/IP dissection. Treat IPP as a HTTP sub protocol. Fix Cassandra false positives. Remove `NDPI_PROTOCOL_QQLIVE` and `NDPI_PROTOCOL_REMOTE_SCAN`: these protocol ids are defined but they are never used. Remove Collectd support: its code has never been called. If someone is really interested in this protocol, we can re-add it later, updating the dissector. Add decoding of PPI (Per-Packet Information) data link type.
* Added autoconf option `--enable-tls-sigs'. (#1471)Toni2022-03-03
| | | | | | * Testing more code in CI environments. * Added strict option checking for `./configure' in CI environments. Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Add ICMP checksum check and set risk if mismatch detected. (#1464)Toni2022-03-02
| | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Added configureable ndpi packet processing limit. (#1466)Toni2022-03-02
| | | | | | | | | * The current behaviour ignores any user preferences and was also incorrectly implemented, because the flow->num_processed_pkts wraps every 65535 and nDPI will process packets again until NDPI_MAX_NUM_PKTS_PER_FLOW_TO_DISSECT reached. Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Add a new flow risk `NDPI_ANONYMOUS_SUBSCRIBER` (#1462)Ivan Nardi2022-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The main goal of a DPI engine is usually to determine "what", i.e. which types of traffic flow on the network. However the applications using DPI are often interested also in "who", i.e. which "user/subscriber" generated that traffic. The association between a flow and a subscriber is usually done via some kind of DHCP/GTP/RADIUS/NAT mappings. In all these cases the key element of the flow used to identify the user is the source ip address. That usually happens for the vast majority of the traffic. However, depending on the protocols involved and on the position on the net where the traffic is captured, the source ip address might have been changed/anonymized. In that case, that address is useless for any flow-username association. Example: iCloud Private Relay traffic captured between the exit relay and the server. See the picture at page 5 on: https://www.apple.com/privacy/docs/iCloud_Private_Relay_Overview_Dec2021.PDF This commit adds new generic flow risk `NDPI_ANONYMOUS_SUBSCRIBER` hinting that the ip addresses shouldn't be used to identify the user associated with the flow. As a first example of this new feature, the entire list of the relay ip addresses used by Private Relay is added. A key point to note is that list is NOT used for flow classification (unlike all the other ip lists present in nDPI) but only for setting this new flow risk. TODO: IPv6
* Removed some unused fields (#1461)Ivan Nardi2022-02-28
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* Bug fixing. (#1459)Vitaly Lavrov2022-02-28
| | | | | The '--enable-debug-messages' option works again. Fixed warning in ahocorasick.c Fixed integer overflow in ndpiReader.c for 32bit systems.
* Add some scripts to easily update some IPs lists (#1449)Ivan Nardi2022-02-25
| | | | | | | | | | | While the lists in a6ff0dd0 and 2f5f445f are somehow provided by the companies themselves (or by some interested parties), these new lists are directly extracted from BGP information, via AS prefixes. *Usually*, these new lists are far more stable than the previous ones. TODO: * add some other ASNs (see `src/lib/ndpi_content_match.c.inc`) * IPv6, as usual :-(
* Provide some API functions for convenience. (#1456)Toni2022-02-25
| | | | | * Extended JSON serializsation: risk, risk score, confidence Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* EthernetIP: add missing initialization (#1448)Ivan Nardi2022-02-20
| | | Fix:1e1cfb89
* Add support for Google Cloud (#1447)Ivan Nardi2022-02-20
| | | | Differentiate between Google its own apps/services and Google Cloud. We already do something similar for Amazon vs AWS and Microsoft vs Azure.
* Added newflow risk NDPI_HTTP_CRAWLER_BOTLuca Deri2022-02-17
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* Invalid prototupe fixLuca Deri2022-02-10
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* Added cybersecurity protocol and category that groups traffic towards ↵Luca Deri2022-02-10
| | | | leading cybersecurity companies and CDNs, useful to make destinations that should be marked as trusted in firewalls and security gateways
* Added VXLAN dissector (#1439)Dmytrii Vitman2022-02-09
| | | * RFC 7348
* Add few scripts to easily update some IPs lists (#1436)Ivan Nardi2022-02-09
| | | | | | | | | | | | | | | | | | | | | | | | * Add few scripts to easily update some IPs lists Some IPs lists should be updated frequently: try to easy the process. The basic idea is taken from d59fefd0 and a8fe74e5 (for Azure addresses): one specific .c.inc file and one script for each protocol. Add the possibility to don't load a specific list. Rename the old NDPI_PROTOCOL_HOTMAIL id to NDPI_PROTOCOL_MS_OUTLOOK, to identify Hotmail/Outlook/Exchange flows. TODO: ipv6 Remove the 9 addresses associated to BitTorrent: they have been added in e2f21116 but it is not clear why all the traffic to/from these ips should be classified as BitTorrent. * Added quotes * Added quotes Co-authored-by: Luca Deri <lucaderi@users.noreply.github.com>
* Added ndpi_serialize_string_string_len() APi callLuca Deri2022-02-08
| | | | Fixed CSV string serialization
* Added HSRP protocol detectionLuca Deri2022-02-08
| | | | Removed attic directory now obsolete
* Add commentAlfredo Cardigliano2022-02-03
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* Added NDPI_ERROR_CODE_DETECTED riskLuca Deri2022-02-03
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* Renamed DCERPC to more generic RPC protocol so we can use also for other ↵Luca Deri2022-02-03
| | | | | | | types of RPCs (not limited to DCE) Extended HTTP plugin to support RPC Improved HTTP crear text detection to limit it to Basic and Digest
* Added new IDN/Punycode risk for spotting internationalized domain namesLuca2022-02-03
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* Added missing __sync_fetch_and_add() definition in WindowsLuca Deri2022-02-02
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* Remove `struct ndpi_id_struct` (#1427)Ivan Nardi2022-01-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the last uses of `struct ndpi_id_struct`. That code is not really used and it has not been updated for a very long time: see #1279 for details. Correlation among flows is achieved via LRU caches. This change allows to further reduce memory consumption (see also 91bb77a8). At nDPI 4.0 (more precisly, at a6b10cf, because memory stats were wrong until that commit): ``` nDPI Memory statistics: nDPI Memory (once): 221.15 KB Flow Memory (per flow): 2.94 KB ``` Now: ``` nDPI Memory statistics: nDPI Memory (once): 235.27 KB Flow Memory (per flow): 688 B <-------- ``` i.e. memory usage per flow has been reduced by 77%. Close #1279
* Remove Playstation VUE protocol (#1426)Ivan Nardi2022-01-30
| | | | PS VUE service has been discontinued on January 30, 2020 https://en.wikipedia.org/wiki/PlayStation_Vue
* Extend protocols support (#1422)Ivan Nardi2022-01-29
| | | | | | | | | | | | | | | | | | Add detection of AccuWeather site/app and Google Classroom. Improve detection of Azure, Zattoo, Whatsapp, MQTT and LDAP. Fix some RX false positives. Fix some "Uncommon TLS ALPN"-risk false positives. Fix "confidence" value for some Zoom/Torrent classifications. Minor fix in Lua script for Wireshark extcap. Update .gitignore file. Let GitHub correctly detect the language type of *.inc files. Zattoo example has been provided by @subhajit-cdot in #1148.
* Added NDPI_TLS_CERTIFICATE_ABOUT_TO_EXPIRE flow riskLuca Deri2022-01-26
| | | | Added ndpi_set_tls_cert_expire_days() API call to modify the number of days for triggering the above alert that by default is set to 30 days
* Improved Zoom protocol detectionLuca Deri2022-01-23
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* Updated confidence typeLuca Deri2022-01-18
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* H323: fix a use-after-poison error (#1412)Ivan Nardi2022-01-17
| | | | | | | Detected by oss-fuzz See: https://oss-fuzz.com/testcase-detail/6730505580576768 Fix a function prototype Update a unit test results
* Added Badoo detectionLuca Deri2022-01-17
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* Added performance tests toolsLuca Deri2022-01-16
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* Reduced Patricia tree bucket memory footprintLuca Deri2022-01-16
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* FreeBSD fixesLuca Deri2022-01-13
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* Added the ability to specify trusted issueDN often used in companies to ↵Luca Deri2022-01-13
| | | | | | | | | | | self-signed certificates This allows to avoid triggering alerts for trusted albeit private certificate issuers. Extended the example/protos.txt with the new syntax for specifying trusted issueDN. Example: trusted_issuer_dn:"CN=813845657003339838, O=Code42, OU=TEST, ST=MN, C=US"
* Added EthernetIP dissectorLuca Deri2022-01-12
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* Add a "confidence" field about the reliability of the classification. (#1395)Ivan Nardi2022-01-11
| | | | | | | | | | | | | As a general rule, the higher the confidence value, the higher the "reliability/precision" of the classification. In other words, this new field provides an hint about "how" the flow classification has been obtained. For example, the application may want to ignore classification "by-port" (they are not real DPI classifications, after all) or give a second glance at flows classified via LRU caches (because of false positives). Setting only one value for the confidence field is a bit tricky: more work is probably needed in the next future to tweak/fix/improve the logic.
* Remove some unused fields (#1393)Ivan Nardi2022-01-08
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* Update copyrightAlfredo Cardigliano2022-01-03
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* Added support for Log4J/Log4Shell detection in nDPI via a new flow risk ↵Luca Deri2021-12-23
| | | | named NDPI_POSSIBLE_EXPLOIT
* Add support for ICloud Private Relay (#1390)Ivan Nardi2021-12-22
| | | | | | | 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?
* A final(?) effort to reduce memory usage per flow (#1389)Ivan Nardi2021-12-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove some unused fields and re-organize other ones. In particular: * Update the parameters of `ndpi_ssl_version2str()` function * Zattoo, Thunder: these timestamps aren't really used. * Ftp/mail: these protocols are dissected only over TCP. * Attention must be paid to TLS.Bittorrent flows to avoid invalid read/write to `flow->protos.bittorrent.hash` field. This is the last(?) commit of a long series (see 22241a1d, 227e586e, 730c2360, a8ffcd8b) aiming to reduce library memory consumption. Before, at nDPI 4.0 (more precisly, at a6b10cf7, because memory stats were wrong until that commit): ``` nDPI Memory statistics: nDPI Memory (once): 221.15 KB Flow Memory (per flow): 2.94 KB ``` Now: ``` nDPI Memory statistics: nDPI Memory (once): 231.71 KB Flow Memory (per flow): 1008 B <--------- ``` i.e. memory usage per flow has been reduced by 66%, dropping below the psychological threshold of 1 KB. To further reduce this value, we probably need to look into #1279: let's fight this battle another day.
* Added Microsoft Azure supportLuca Deri2021-12-19
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* Improve/add several protocols (#1383)Ivan Nardi2021-12-18
| | | | | | | | | | | | | | | | | | | Improve Microsoft, GMail, Likee, Whatsapp, DisneyPlus and Tiktok detection. Add Vimeo, Fuze, Alibaba and Firebase Crashlytics detection. Try to differentiate between Messenger/Signal standard flows (i.e chat) and their VOIP (video)calls (like we already do for Whatsapp and Snapchat). Add a partial list of some ADS/Tracking stuff. Fix Cassandra, Radius and GTP false positives. Fix DNS, Syslog and SIP false negatives. Improve GTP (sub)classification: differentiate among GTP-U, GTP_C and GTP_PRIME. Fix 3 LGTM warnings.
* Improved BitTorrent classificationLuca Deri2021-12-07
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* Improve IPv6 support, enabling IPv6 traffic on (almost) all dissectors. (#1380)Ivan Nardi2021-12-04
| | | | | | | | | | | There are no valid reasons for a (generic) protocol to ignore IPv6 traffic. Note that: * I have not found the specifications of "CheckPoint High Availability Protocol", so I don't know how/if it supports IPv6 * all LRU caches are still IPv4 only Even if src_id/dst_id stuff is probably useless (see #1279), the right way to update the protocol classification is via `ndpi_set_detected_protocol()`
* Make serialize risk and proto not dependant on any flow. (#1377)Toni2021-12-04
| | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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