| Commit message (Collapse) | Author | Age |
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Added ndpi_dump_risks_score() API score
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Added ndpi_get_upper_proto() API call
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```
In file included from protocols/fasttrack.c:29:
../include/ndpi_api.h:1504:3: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
1504 | const ndpi_risk_severity ndpi_risk2severity(ndpi_risk_enum risk);
| ^~~~~
In file included from protocols/amazon_video.c:28:
../include/ndpi_api.h:1504:3: warning: type qualifiers ignored on function return type [-Wignored-qualifiers]
1504 | const ndpi_risk_severity ndpi_risk2severity(ndpi_risk_enum risk);
| ^~~~~
...
ndpi_utils.c: In function ‘ndpi_risk2severity’:
ndpi_utils.c:1834:1: warning: control reaches end of non-void function [-Wreturn-type]
1834 | }
| ^
```
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int ndpi_get_geoip_asn(struct ndpi_detection_module_struct *ndpi_str,
char *ip, u_int32_t *asn);
int ndpi_get_geoip_country_continent(struct ndpi_detection_module_struct *ndpi_str, char *ip,
char *country_code, u_int8_t country_code_len,
char *continent, u_int8_t continent_len);
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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);
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the value of the function pointer ndpi_dga_function curently set to NULL
(that means the nDPI internal DGA function will be used)
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* An external file which contains known malicious SSL certificate SHA-1 hashes
can be loaded via ndpi_load_malicious_sha1_file(...)
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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utility functions.
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Added ndpi_load_malicious_ja3_file() API call
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Improved AnyDesk detection
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- ndpi_jitter_init()
- ndpi_jitter_free()
- ndpi_jitter_add_value()
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confidence interval
New API calls added
- ndpi_hw_init()
- ndpi_hw_add_value()
- ndpi_hw_free()
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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);
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ndpi_flow_struct but not the struct itself. (#1101)
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
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Warning fix
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https://github.com/veggiedefender/browsertunnel
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To support QUIC payload and header decryption, it is necessary to choose an
external crypto library to handle the low-level crypto stuff. Since we will
use some Wireshark code, it is quite natural to choose the same library used
by Wireshark itself: libgcrypt.
More precisely, we will use libgcrypt and libgpg-error.
Both libraries have LGPL license, so there should be no issue from this point
of view.
These libraries are not required to build nDPI, and their usage is optional:
nDPI will keep working (and compiling) even if they are not available.
However, without them, QUIC sub-classification is next to impossible.
The configure flag "--disable-gcrypt" forces the build system to ignore these
libraries.
libgpg-error is only used for debug to have meaningful error messages and its
usage is trivial.
The same cannot be said for libgcrypt because its initialization is a significant
issue.
The rest of this commit message try explaining how libgcrypt is
initialized.
According to the documentation
https://gnupg.org/documentation/manuals/gcrypt/Initializing-the-library.html
https://gnupg.org/documentation/manuals/gcrypt/Multi_002dThreading.html#Multi_002dThreading
libgcrypt must be initialized before using it, but such initialization should
be performed by the actual application and not by any library.
Forcing the users to proper initialize libgcrypt in their own code seems
unreasonable: most people using nDPI might be complete unaware of any crypto
stuff and update each and every one application linking to nDPI with specific
libgcrypt code should be out of question, anyway.
Fortunately, it seems a workaround exists to initialize libgcrypt in a library
https://lists.gnupg.org/pipermail/gcrypt-devel/2003-August/000458.html
Therefore, we could provide a wrapper to this initialization stuff in a nDPI
function. Unfortunately nDPI API lacks a global init function that must be
called only once, before any other functions. We could add it, but that would
be a major API break.
AFAIK, ndpi_init_detection_module() might be called multiple times, for example
to create multiple independent dpi engines in the same program.
The proposed solution is to (optionally) initialize libgcrypt in
ndpi_init_detection_module() anyway:
* if the actual application doesn't directly use libgcrypt and only calls
ndpi_init_detection_module() once, everything is formally correct and it
should work out of the box [by far the most common user case];
* if the actual application already uses libgcrypt directly, it already
performs the required initialization. In this case the ndpi_prefs.ndpi_dont_init_libgcrypt
flag should be passed to ndpi_init_detection_module() to avoid further
initializations.
The only scenario not supported by this solution is when the application is
unaware of libgcrypt and calls ndpi_init_detection_module() multiple times
concurrently. But this scenario should be uncommon.
A completely different option should be to switch to another crypto library,
with a huge impact on the QUIC dissector code.
Bottom line: crypto is hard, using libgcrypt is complex and the proposed
initialization, even if not perfect, should cover the most frequent user
cases and should work, for the time being.
If anyone has some suggestions...
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Improve support for GQUIC (up to Q046) and add support for Q050 and (IETF-)QUIC
Still no sub-classification for Q050 and QUIC
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