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* 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.
* Improved NATPMP dissection. (#1745)Toni2022-09-21
| | | | | Signed-off-by: Toni Uhlig <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* 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.
* STUN: several improvementsNardi Ivan2022-09-11
| | | | | | | | | Add detection over TCP and fix detection over IPv6. Rename some variables since Stun dissector is no more "udp-centric". Stun dissector should always classified the flow as `STUN` or `STUN/Something`. Don't touch `flow->guessed_host_protocol_id` field, which should be always be related to "ip-classification" only.
* 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>
* HTTP: improve sub-classification (#1696)Ivan Nardi2022-08-05
| | | | | | | | | | Content-matched sub-protocols (DASH, IPP, MPEGDASH...) shouldn't ovewrite the previous master protocol (if any; usually HTTP). Furthermore. the HTTP dissector shouldn't update the classification (in the extra-dissection code path) if a content-matched sub-protocols has already been found. This commit should address the first part of the changes described in #1687.
* 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.
* 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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* 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 test resultsLuca Deri2022-06-05
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* Updated risk resultsLuca Deri2022-05-30
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* Certificate timestamps should be printed in UTC (#1563)Ivan Nardi2022-05-30
| | | This way, the CI results are consistent
* Updated tests resultsLuca Deri2022-05-30
| | | | Code cleanup
* Added ndpi_get_flow_error_code() API callLuca Deri2022-05-02
| | | | Fixed typo
* Sync unit tests results (#1533)Ivan Nardi2022-04-27
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* Added generic user agent setter. (#1530)Toni2022-04-25
| | | | | * ndpiReader: Print user agent if one was set and not just for certain protocols. Signed-off-by: lns <matzeton@googlemail.com>
* Tiny gnutella improvement if gtk-gnutella used. (#1525)Toni2022-04-22
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Updated `utils/whatsapp_ip_addresses_download.sh' to scrape the required IP ↵Toni2022-04-22
| | | | | | | | addresses/ranges. (#1524) * Replaced return statements in `utils/*.sh' with exit's (such scripts should never source'd) * Ran `utils/update_every_lists.sh' Signed-off-by: lns <matzeton@googlemail.com>
* reader_util: add support for userAgent in SSDP (#1502)Ivan Nardi2022-03-28
| | | | Update unit tests results Follow-up of d668ab4b
* 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.
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