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Commit Graph

21 Commits (3fa818d08731461e33779a48ac4657ac17bb68ea)

Author SHA1 Message Date
Victor Julien 59327e0fd4 Various style fixes 12 years ago
Anoop Saldanha 429c6388f6 App layer API rewritten. The main files in question are: 
app-layer.[ch], app-layer-detect-proto.[ch] and app-layer-parser.[ch].

Things addressed in this commit:
- Brings out a proper separation between protocol detection phase and the
  parser phase.
- The dns app layer now is registered such that we don't use "dnstcp" and
  "dnsudp" in the rules.  A user who previously wrote a rule like this -

  "alert dnstcp....." or
  "alert dnsudp....."

  would now have to use,

  alert dns (ipproto:tcp;) or
  alert udp (app-layer-protocol:dns;) or
  alert ip (ipproto:udp; app-layer-protocol:dns;)

  The same rules extend to other another such protocol, dcerpc.
- The app layer parser api now takes in the ipproto while registering
  callbacks.
- The app inspection/detection engine also takes an ipproto.
- All app layer parser functions now take direction as STREAM_TOSERVER or
  STREAM_TOCLIENT, as opposed to 0 or 1, which was taken by some of the
  functions.
- FlowInitialize() and FlowRecycle() now resets proto to 0.  This is
  needed by unittests, which would try to clean the flow, and that would
  call the api, AppLayerParserCleanupParserState(), which would try to
  clean the app state, but the app layer now needs an ipproto to figure
  out which api to internally call to clean the state, and if the ipproto
  is 0, it would return without trying to clean the state.
- A lot of unittests are now updated where if they are using a flow and
  they need to use the app layer, we would set a flow ipproto.
- The "app-layer" section in the yaml conf has also been updated as well.
 12 years ago
Anoop Saldanha 127ef8f903 Use a typdef AppProto <-> uint16_t for representing app layer protocol. 
Some minor refactoring/cleanup, including renaming functions.
 12 years ago
Anoop Saldanha 6f8cfd999f Allow detection ports for alproto to be specified via the conf file. 
To understand the option have a look at the option

app-layer.protocols.tls.detection-ports
 12 years ago
Victor Julien f10dd603ff DNS: adding dns_request content modifier 13 years ago
Victor Julien 8e01cba85d DNS TCP and UDP parser and DNS response logger 13 years ago
Anoop Saldanha b99f9fe890 New app inspection engine introduced. Moved existing inspecting engines to use it. 13 years ago
Anoop Saldanha d3989e7cee probing parser updated to always accept u32 buflens. Update all probing parser functions to accomodate this change 14 years ago
Anoop Saldanha 432c3317d2 app layer probing parser updates 14 years ago
Victor Julien fca541f40e Add per app layer parser profiling 
Per packet per app layer parser profiling. Example summary output:

Per App layer parser stats:

App Layer              IP ver   Proto   cnt        min      max          avg
--------------------   ------   -----   ------     ------   ----------   -------
ALPROTO_HTTP            IPv4       6    163394        126     38560320     42814
ALPROTO_FTP             IPv4       6       644        117        26100      2566
ALPROTO_TLS             IPv4       6       670        117         7137       799
ALPROTO_SMB             IPv4       6    114794        126       225270       957
ALPROTO_DCERPC          IPv4       6      5207        126        25596      1266

Also added to the csv out.

In the csv out there is a new column "stream (no app)" that removes the
app layer parsers from the stream tracking. So raw stream engine performance
becomes visible.
 14 years ago
Victor Julien 0cc9f39200 Move TlsConfig structure out of app-layer-protos.h and rename it to SslConfig. 14 years ago
Gurvinder Singh 8f8b1212af support for ssl_version keyword 15 years ago
Kirby Kuehl c3b9305259 dcerpc udp support 16 years ago
William Metcalf ce01927515 Import of GPLv2 Header 050410 16 years ago
Kirby Kuehl 57331ea2a2 add smb2 proto and smb, smb2, dcerpc unit tests 16 years ago
Gurvinder Singh c1e485cc44 app layer error handling 16 years ago
Gurvinder Singh a16e7b7455 tls no reassembly support 16 years ago
Kirby Kuehl ecaa701bdf smb and dcerpc work 16 years ago
Victor Julien 086ba5f49b Add 'BySize' field parser. Add stub tls parser. 16 years ago
Victor Julien 4369816cdd Improvements to content keyword memory handling. 
First version of a simple pattern based L7 proto detection engine. Currently just works by matching a single pattern in the initial data. Implemented HTTP, SSL, MSN, JABBER, SMTP and a few more.

Couple of pattern matcher cleanups.
 16 years ago
Victor Julien 8e10844f95 Initial code of Application Layer parsing framework. Rename of L7* to AppLayer*. 16 years ago