aboutsummaryrefslogtreecommitdiff
path: root/src/lib/ndpi_analyze.c
Commit message (Collapse)AuthorAge
* Added printf/fprintf replacement for some internal modules. (#1974)Toni2023-09-26
| | | | | | * logging is instead redirected to `ndpi_debug_printf` Signed-off-by: lns <matzeton@googlemail.com> Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Fix compilation on Windows (#2072)Ivan Nardi2023-08-14
|
* Reworked ndpi_filter_xxx implementation using compressed bitmapsLuca Deri2023-08-14
|
* Add an heuristic to detect fully encrypted flows (#2058)Ivan Nardi2023-07-26
| | | | | | | | A fully encrypted session is a flow where every bytes of the payload is encrypted in an attempt to “look like nothing”. The heuristic needs only the very first packet of the flow. See: https://www.usenix.org/system/files/sec23fall-prepub-234-wu-mingshi.pdf A basic, but generic, inplementation of the popcpunt alg has been added
* fuzz: extend fuzzing coverage (#2052)Ivan Nardi2023-07-18
| | | | Added/merged some traces. Improved Socks identification
* Implemented Count-Min Sketch [count how many times a value has been observed]Luca Deri2023-07-13
| | | | | | | - ndpi_cm_sketch_init() - ndpi_cm_sketch_add() - ndpi_cm_sketch_count() - ndpi_cm_sketch_destroy()
* Numeric truncation at `ndpi_analyze.c` at lines 101, 104, 107, 110 (#1999)headshog2023-05-30
| | | | | | | | | | | * fixed numeric truncation error in ndpi_analyze.c * fixed numeric truncation error in ndpi_analyze.c x2 * fixed numeric truncation error in ndpi_analyze.c x3 * fixed numeric truncation error in ndpi_analyze.c and printf format * fixed tests
* fixed numeric truncation errorheadshog2023-05-20
|
* Implemented ndpi_predict_linear() for predicting a timeseries value overtimeLuca Deri2023-05-19
|
* Added missing checkLuca Deri2023-04-28
|
* fuzz: extend fuzzers coverage (#1952)Ivan Nardi2023-04-25
|
* Implemented ndpi_XXX_reset() API calls whre XXX is ses, des, hwLuca Deri2023-04-08
|
* fuzz: some improvements and add two new fuzzers (#1881)Ivan Nardi2023-02-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove `FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION` define from `fuzz/Makefile.am`; it is already included by the main configure script (when fuzzing). Add a knob to force disabling of AESNI optimizations: this way we can fuzz also no-aesni crypto code. Move CRC32 algorithm into the library. Add some fake traces to extend fuzzing coverage. Note that these traces are hand-made (via scapy/curl) and must not be used as "proof" that the dissectors are really able to identify this kind of traffic. Some small updates to some dissectors: CSGO: remove a wrong rule (never triggered, BTW). Any UDP packet starting with "VS01" will be classified as STEAM (see steam.c around line 111). Googling it, it seems right so. XBOX: XBOX only analyses UDP flows while HTTP only TCP ones; therefore that condition is false. RTP, STUN: removed useless "break"s Zattoo: `flow->zattoo_stage` is never set to any values greater or equal to 5, so these checks are never true. PPStream: `flow->l4.udp.ppstream_stage` is never read. Delete it. TeamSpeak: we check for `flow->packet_counter == 3` just above, so the following check `flow->packet_counter >= 3` is always false.
* Add some fuzzers to test other data structures. (#1870)Ivan Nardi2023-01-25
| | | | | | | Start using a dictionary for fuzzing (see: https://llvm.org/docs/LibFuzzer.html#dictionaries). Remove some dead code. Fuzzing with debug enabled is not usually a great idea (from performance POV). Keep the code since it might be useful while debugging.
* fuzz: fix memory allocation failure logic (#1867)Ivan Nardi2023-01-20
| | | | | We *do* want to have some allocation errors. Fix some related bugs Fix: 29be01ef
* Add some fuzzers to test algorithms and data structures (#1852)Ivan Nardi2023-01-17
| | | Fix some issues found with these new fuzzers
* fuzz: add a new fuzzer testing memory allocation failures (#1818)Ivan Nardi2022-12-06
| | | | | | | | | Try to fuzz error paths triggered by allocation errors. Fix some errors already found by this new fuzzer. Basic idea taken from: https://github.com/harfbuzz/harfbuzz/pull/2566/files `FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION` is a standard define used to (not)compile specific code in fuzzing builds. See: https://llvm.org/docs/LibFuzzer.html
* Fixes on hw calculationLuca Deri2022-09-01
|
* Modified definition of hll_addLuca Deri2022-08-17
|
* bins: add support for 64bit bins (#1626)Ivan Nardi2022-07-03
|
* Removed superfluous ifdef'd includes. (#1519)Toni2022-04-19
| | | Signed-off-by: lns <matzeton@googlemail.com>
* Fixed msys2 build warnings and re-activated CI Mingw64 build.fix/windows-msys2Toni Uhlig2022-04-14
| | | | | | | * Removed Visual Studio leftovers. Maintaining an autotools project with VS integration requires some additional overhead. Signed-off-by: Toni Uhlig <matzeton@googlemail.com> Signed-off-by: lns <matzeton@googlemail.com>
* Added ndpi_find_outliers() API call using Z-ScoreLuca Deri2022-04-04
|
* Update copyrightAlfredo Cardigliano2022-01-03
|
* Added example for finding similarities in RRDs using nDPI statistical APIsLuca Deri2021-12-04
|
* Demo tool for finding anomalies in RRD filesLuca Deri2021-12-03
|
* Implemented ndpi_ses_fitting() and ndpi_des_fitting()Luca Deri2021-10-12
| | | | for comuting the best alpha/beta values for exponential smoothing
* Fixed DES initialisationLuca Deri2021-10-12
|
* Fix some ndpi_malloc/ndpi_free pairs (#1298)Ivan Nardi2021-09-13
|
* Fix possible segfault/leakAlfredo Cardigliano2021-07-05
|
* Upgraded exponential smoothing to 64 bit valuesLuca Deri2021-06-18
|
* Refactored nDPI subprotocol handling and aimini protocol detection. (#1156)Toni2021-03-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Refactored and merged callback buffer routines for non-udp-tcp / udp / tcp / tcp-wo-payload. Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Try to detect one subprotocol if a detected protocol can have one. * This adds a performance overhead due to much more protocol detection routine calls. See #1148 for more information. Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Refactor subprotocol handling (1/2). Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Refactor subprotocol handling (2/2). Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Prevent some code duplication by using macros for ndpi_int_one_line_struct string comparision. Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Refactored aimini HTTP detection parts (somehow related to #1148). Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Added aimini client/server test pcap. Signed-off-by: Toni Uhlig <matzeton@googlemail.com> * Removed master protocol as it was only used for STUN and via also removed API function ndpi_get_protocol_id_master_proto * Adjusted Python code to conform to the changes made during the refactoring process. Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
* Implemented square erro rollup to avoid overflowLuca Deri2021-03-14
|
* Added double exponential smoothing implementationLuca2021-03-11
|
* Added single exponential smoothing APILuca Deri2021-03-11
| | | | | int ndpi_ses_init(struct ndpi_ses_struct *ses, double alpha, float significance); int ndpi_ses_add_value(struct ndpi_ses_struct *ses, const u_int32_t _value, double *forecast, double *confidence_band);
* Added HW checksLuca Deri2021-03-01
|
* Added further HW checksLuca Deri2021-03-01
|
* Holt-Winters calculation improvementLuca Deri2021-02-27
|
* Fixes #1136Luca Deri2021-02-19
|
* Fix small memory leak (#1133)Ivan Nardi2021-02-10
| | | Now function definition matches the prototype in ndpi_api.h.in
* Extended the API to calculate jitterLuca Deri2021-02-09
| | | | | | - ndpi_jitter_init() - ndpi_jitter_free() - ndpi_jitter_add_value()
* Minor code improvementsLuca Deri2021-02-09
|
* Added timeseries forecasting support implementing Holt-Winters with ↵Luca Deri2021-02-08
| | | | | | | | | confidence interval New API calls added - ndpi_hw_init() - ndpi_hw_add_value() - ndpi_hw_free()
* Implemented more efficient and memory savvy RSILuca Deri2021-02-05
|
* RSI enhancementsLuca Deri2021-02-05
|
* Implemented API for computing RSI (Relative Strenght Index)Luca Deri2021-02-04
| | | | | | void ndpi_init_rsi(struct ndpi_rsi_struct *s, u_int16_t num_learning_values); void ndpi_free_rsi(struct ndpi_rsi_struct *s); float ndpi_rsi_add_value(struct ndpi_rsi_struct *s, const u_int32_t value);
* Fixes #1029Luca Deri2020-11-27
|
* Fixes #1032Luca Deri2020-11-27
|
* Added -D flag for detecting DoH in the wildLuca Deri2020-10-26
| | | | Removed heuristic from CiscoVPN as it leads to false positives
* Stddev calculation changesLuca Deri2020-08-30
|
Powered by cgit, Themed by Ted Yin.