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* Test multiple `ndpiReader` configurations (#1931)Ivan Nardi2023-04-06
| | | | | | | | | Extend internal unit tests to handle multiple configurations. As some examples, add tests about: * disabling some protocols * disabling Ookla aggressiveness Every configurations data is stored in a dedicated directory under `tests\cfgs`
* Add a new flow risk about literal IP addresses used as SNI (#1892)Ivan Nardi2023-03-02
| | | | | | | | | | RFC 6066 3: "Literal IPv4 and IPv6 addresses are not permitted in "HostName"." Don't set this risk if we have a valid sub-classification (example: via certificate) Since a similar risk already exists for HTTP hostnames, reuse it, with a more generic name.
* ndpiReader: print how many packets (per flow) were needed to perform full ↵Ivan Nardi2023-03-01
| | | | | | DPI (#1891) Average values are already printed, but this change should ease to identify regressions/improvements.
* Fix detection of packet direction and NDPI_UNIDIRECTIONAL_TRAFFIC risk (#1883)Ivan Nardi2023-02-13
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* Further reduction of the size of some traces used as unit test (#1879)Ivan Nardi2023-01-30
| | | See a944514d. No flow/classification/metadata have been removed.
* Shrinked symbolic flow risks labelsLuca Deri2023-01-19
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* Add detection of Tailscale (#1857)Ivan Nardi2023-01-17
| | | Extend the example of wireguard traffic
* Add Meraki Cloud protocol and improve other protocols (#1854)Ivan Nardi2023-01-17
| | | | | Avoid some LineCall and Jabber false positives. Detect Discord mid flows. Fix Bittorrent detection.
* Fix classification "by-port" (#1851)Ivan Nardi2023-01-17
| | | | | | | | | | | Classification "by-port" should be the last possible effort, *after* having test all the LRU caches. Remove some dead code from `ndpi_detection_giveup()`: `flow->guessed_protocol_id` is never set to any od those voip protocols and at that point in this function we never have both a master *and* a application protocols. Coverage reports (both from unit tests and from fuzzing) confirms that was dead code.
* Fix missing bracket at ppstream (#1843)Ege Çetin2023-01-03
| | | | | | | * add missing bracket * Sync unit test results Co-authored-by: Nardi Ivan <nardi.ivan@gmail.com>
* Remove some old protocols (#1832)Ivan Nardi2022-12-23
| | | | | | | | | | | | | | | | | | | | | These protocols: * have been addeded in the OpenDPI era * have never been updated since then * we don't have any pcap examples [*] If (and it is a big if...) some of these protocols are still somehow used and if someone is still interested in them, we can probably re-add them starting from scratch (because the current detection rules are probably outdated) Protocols removed: DIRECT_DOWNLOAD_LINK, APPLEJUICE, DIRECTCONNECT, OPENFT, FASTTRACK, SHOUTCAST, THUNDER, AYIYA, STEALTHNET, FIESTA, FLORENSIA, AIMINI, SOPCAST PPSTREAM dissector works (...) only on UDP. [*]: with do have an AIMINI test pcap but it was some trivial http traffic detected only by hostname matching, on domains no more available...
* Added TP-LINK Smart Home Protocol dissector. (#1841)Darryl Sokoloski2022-12-20
| | | | | Signed-off-by: Darryl Sokoloski <darryl@sokoloski.ca> Signed-off-by: Darryl Sokoloski <darryl@sokoloski.ca>
* Added TUYA LAN Protocol dissector. (#1838)Darryl Sokoloski2022-12-19
| | | | | | | | Tuya IoTOS Embedded Wi-Fi and BLE SDK for bk7231n. Used by many "smart" devices such as LED light strips, bulbs, etc. Signed-off-by: Darryl Sokoloski <darryl@sokoloski.ca> Signed-off-by: Darryl Sokoloski <darryl@sokoloski.ca>
* STUN: add detection of ZOOM peer-to-peer flows (#1825)Ivan Nardi2022-12-11
| | | | See: "Enabling Passive Measurement of Zoom Performance in Production Networks" https://dl.acm.org/doi/pdf/10.1145/3517745.3561414
* Updated tests resultsLuca Deri2022-12-03
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* Hangout: avoid useless lookups in the protocol tree (#1755)Ivan Nardi2022-10-25
| | | | | | | We already performed exactly these lookups in the generic code to populate `flow->guessed_protocol_id_by_ip`: use it! This code probably needs a deeper review, since it is basicaly a simple matching on ip + port.
* Reworked severities adding critical and emergency, thus shifting values downLuca Deri2022-10-19
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* LINE_CALL: add detection of LINE voip calls (#1761)Ivan Nardi2022-10-06
| | | | | | | | These flows are classifed as `LINE_CALL`; another option was `RTP/LINE_CALL`. No sure about the best solution... Extend LINE domains list. Remove RTP dead code.
* Added new flow risk NDPI_HTTP_OBSOLETE_SERVER. Currently Apache and nginx ↵Luca2022-10-04
| | | | are supported
* Sizes of LRU caches are now configurableNardi Ivan2022-09-23
| | | | | | | | 0 as size value disable the cache. The diffs in unit tests are due to the fact that some lookups are performed before the first insert: before this change these lookups weren't counted because the cache was not yet initialized, now they are.
* Remove classification "by-ip" from protocol stack (#1743)Ivan Nardi2022-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Basically: * "classification by-ip" (i.e. `flow->guessed_protocol_id_by_ip` is NEVER returned in the protocol stack (i.e. `flow->detected_protocol_stack[]`); * if the application is interested into such information, it can access `ndpi_protocol->protocol_by_ip` itself. There are mainly 4 points in the code that set the "classification by-ip" in the protocol stack: the generic `ndpi_set_detected_protocol()`/ `ndpi_detection_giveup()` functions and the HTTP/STUN dissectors. In the unit tests output, a print about `ndpi_protocol->protocol_by_ip` has been added for each flow: the huge diff of this commit is mainly due to that. Strictly speaking, this change is NOT an API/ABI breakage, but there are important differences in the classification results. For examples: * TLS flows without the initial handshake (or without a matching SNI/certificate) are simply classified as `TLS`; * similar for HTTP or QUIC flows; * DNS flows without a matching request domain are simply classified as `DNS`; we don't have `DNS/Google` anymore just because the server is 8.8.8.8 (that was an outrageous behaviour...); * flows previusoly classified only "by-ip" are now classified as `NDPI_PROTOCOL_UNKNOWN`. See #1425 for other examples of why adding the "classification by-ip" in the protocol stack is a bad idea. Please, note that IPV6 is not supported :( (long standing issue in nDPI) i.e. `ndpi_protocol->protocol_by_ip` wil be always `NDPI_PROTOCOL_UNKNOWN` for IPv6 flows. Define `NDPI_CONFIDENCE_MATCH_BY_IP` has been removed. Close #1687
* Add CryNetwork dissector.Toni Uhlig2022-09-16
| | | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Add Syncthing dissector.Toni Uhlig2022-09-16
| | | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Add NATPMP dissector. (#1738)Toni2022-09-16
| | | | | | | Signed-off-by: lns <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com> Signed-off-by: lns <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Fix `ndpi_do_guess()` (#1731)Ivan Nardi2022-09-12
| | | | | Avoid a double call of `ndpi_guess_host_protocol_id()`. Some code paths work for ipv4/6 both Remove some never used code.
* Avoid useless host automa lookup (#1724)Ivan Nardi2022-09-05
| | | | | | | | | | | | | | | | | | | The host automa is used for two tasks: * protocol sub-classification (obviously); * DGA evaluation: the idea is that if a domain is present in this automa, it can't be a DGA, regardless of its format/name. In most dissectors both checks are executed, i.e. the code is something like: ``` ndpi_match_host_subprotocol(..., flow->host_server_name, ...); ndpi_check_dga_name(..., flow->host_server_name,...); ``` In that common case, we can perform only one automa lookup: if we check the sub-classification before the DGA, we can avoid the second lookup in the DGA function itself.
* Add TiVoConnect dissector. Fixes #1697. (#1699)Toni2022-08-08
| | | | | * added static assert if supported, to complain if the flow struct changes Signed-off-by: lns <matzeton@googlemail.com>
* Add Discord dissector. (#1694)Toni2022-08-03
| | | | | * fixed RiotGames false positive Signed-off-by: lns <matzeton@googlemail.com>
* Add Activision dissector. (#1693)Toni2022-08-02
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Add Softether dissector. (#1679)Toni2022-07-29
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Patricia tree, Ahocarasick automa, LRU cache: add statistics (#1683)Ivan Nardi2022-07-29
| | | | | | | | | | Add (basic) internal stats to the main data structures used by the library; they might be usefull to check how effective these structures are. Add an option to `ndpiReader` to dump them; enabled by default in the unit tests. This new option enables/disables dumping of "num dissectors calls" values, too (see b4cb14ec).
* TINC: avoid processing SYN packets (#1676)Ivan Nardi2022-07-28
| | | | | | | | | | | Since e6b332aa, we have proper support for detecting client/server direction. So Tinc dissector is now able to properly initialize the cache entry only when needed and not anymore at the SYN time; initializing that entry for **every** SYN packets was a complete waste of resources. Since 4896dabb, the various `struct ndpi_call_function_struct` structures are not more separate objects and therefore comparing them using only their pointers is bogus: this bug was triggered by this change because `ndpi_str->callback_buffer_size_tcp_no_payload` is now 0.
* Update the protocol bitmask for some protocols (#1675)Ivan Nardi2022-07-27
| | | | | | | Tcp retransmissions should be ignored. Remove some unused protocol bitmasks. Update script to download Whatsapp IP list.
* Add AVAST dissector. (#1674)Toni2022-07-25
| | | Signed-off-by: lns <matzeton@googlemail.com>
* DTLS: fix exclusion of DTLS protocolNardi Ivan2022-07-20
| | | | Add an helper to exclude a generic protocol
* Improved Jabber/XMPP detection. (#1661)Toni2022-07-13
| | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Keep track of how many dissectors calls we made for each flow (#1657)Ivan Nardi2022-07-11
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* Avoid spurious calls to extra dissection (#1648)Ivan Nardi2022-07-07
| | | | If the extra callabck is not set, calling the extra dissection is only a waste of resources...
* Fix handling of NDPI_UNIDIRECTIONAL_TRAFFIC risk (#1636)Ivan Nardi2022-07-05
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* Added unidirectional traffic flow riskLuca Deri2022-06-20
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* Dissect host line if SSDP contains such. (#1586)Toni2022-06-07
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Updated tests resultsLuca Deri2022-05-30
| | | | Code cleanup
* Added MPEG-DASH dissector. Fixes #1223. (#1555)Toni2022-05-29
| | | | | | * Improved HTTP POST detection * Refactored subprotocol detection Signed-off-by: lns <matzeton@googlemail.com>
* Modified risk labelsLuca Deri2022-05-04
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* Sync unit tests results (#1533)Ivan Nardi2022-04-27
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* 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 cybersecurity category mapping to stringLuca 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
* Sync unit tests results (#1423)Ivan Nardi2022-01-28
| | | Fix: 7a3aa41a
* 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.
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