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Commit Graph

231 Commits (f03278d13255e41b649cfe631c1aa1a7d9ffab15)

Author SHA1 Message Date
Victor Julien 54610cb4a4 rule parsing cleanups 
Clean up usage of array of pointers to the various parts of a rule.
 12 years ago
Victor Julien 67989e7e4e rule parsing: reduce mallocs and clean up 
Reduce mallocs during rule parsing. Also, no longer recursively
call the option parse function.
 12 years ago
Victor Julien e7f6107e79 signature address parsing improvements and tests 
Fix sigatures not supporting [10.0.0.0/24, !10.1.1.1] notation when
used directly in a rule instead of through a variable.

Add tests for Bugs #815 and #920.
 12 years ago
Anoop Saldanha d0c5f51293 Update rule engine relationship with regard to setting ip protocol between specifying protocol after action, ip_proto and app-layer-protocol. 
Now we can specify alproto, ip_proto combinations this way

alert dns (ip_proto:[tcp/udp];)
alert ip (app-layer-protocol:dns;)
alert ip (app-layer-protocol:dns; ip_proto:tcp;)
alert tcp (app-layer-protocol:dns:)

so on.  Neater than using dnstcp/dnsudp.

This is related to feature #424.
 12 years ago
Anoop Saldanha f592c481dc Introduce a separate inspection engine for app events. 12 years ago
Anoop Saldanha b1dffdfbe0 Add app layer protocol packet event detection support. 12 years ago
Anoop Saldanha 1077acecd7 validate dns sigs that are reported as plain dns and not dnsudp or dnstcp. 12 years ago
Anoop Saldanha 94e40907e2 feature #727 - Add support for app-layer-protocol:<protocol> keyword 12 years ago
Anoop Saldanha ddde572fba Introduce new options into the conf file to enable/disable - 
1. Proto detection
2. Parsers

For app layer protocols.

libhtp has now been moved to the section under app-layer.protocols.http,
but we still provide backward compatibility with older conf files.
 12 years ago
Anoop Saldanha d9686fae57 Now supports accepting port addresses as strings, like the ones accepted in our rules. As a consequence we now accept port range, and other such combination. Support PP for ports based on ipproto as well. 12 years ago
Victor Julien 4827a4dcef Coverity 400477: pcre_get_substring retval 
Add missing return code check to pcre_get_substring call.
 12 years ago
Eric Leblond c5bd04f102 unittest: recycle packet before exit 
To avoid an issue with flow validation, we need to recycle the packet
before cleaning the flow.
 12 years ago
Anoop Saldanha 48cf0585fb Suricata upgrade to libhtp 0.5.x. 
Remove the support for now unsupported personalities from libhtp -
TOMCAT_6_0, APACHE and APACHE_2_2.  We instead use the APACHE_2
personality.
 12 years ago
Victor Julien 73e27c1fb7 Generate proper errors if sid,gid,rev values are out of range. Bug #779. 12 years ago
Victor Julien 7292998a58 Content: set up sticky buffers like file_data and dce_stub_data w/o flags, but with a list variable 12 years ago
Victor Julien f10dd603ff DNS: adding dns_request content modifier 12 years ago
Victor Julien 59780ca770 Hacks to enable alert dns even though we have dnstcp and dnsudp parsers. Needs proper solution later. 12 years ago
Anoop Saldanha d4d18e3136 Transaction engine redesigned. 
Improved accuracy, improved performance.  Performance improvement
noticeable with http heavy traffic and ruleset.

A lot of other cosmetic changes carried out as well.  Wrappers introduced
for a lot of app layer functions.

Failing dce unittests disabled.  Will be reintroduced in the updated dce
engine.

Cross transaction matching taken care of.  FPs emanating from these
matches have now disappeared.  Double inspection of transactions taken
care of as well.
 12 years ago
Victor Julien 19511cda97 Remove obsolete DetectParseContentString function, it has been replaced by DetectContentDataParse 12 years ago
Victor Julien 4165de4771 Minor SigValidate cleanup 12 years ago
Anoop Saldanha 0d7305dfc7 Update the way we handle http_host keywords. 
Previously we would have forced all users to use nocase with http_host
keywords(since the hostname buffer is lowercase).

We now error out on sigs that has nocase set with http_host set.  Also if
the http_host pattern or http_host pcre has an uppercase character set, we
invalidate such sigs.  Unittests also updated to reflect the above change.
 12 years ago
Anoop Saldanha 4c6efa2d40 Update content id assignment. 
All fp id assignment now happens in one go.
Also noticing a slight perf increase, probably emanating from improved cache
perf.
Removed irrelevant unittests as well.
 12 years ago
Anoop Saldanha 60be1751d5 Figure out sig fp during validation stage, instead of staging stage. 12 years ago
Anoop Saldanha f8ae53ac02 Further customize content modifier buffer registration. 
Allow modifier setups functions to have CustomCallbacks to enable their
internal conditions.
 12 years ago
Anoop Saldanha a304a98d1d http_* setup unified. 12 years ago
Anoop Saldanha 0b5d277254 code cleanup for all content based keywords. 12 years ago
Anoop Saldanha a308d718ae Allow the use of relative without the presence of a related previous keyword. 12 years ago
Anoop Saldanha 3511f91bba Add support for the new keyword - http_raw_host header. 
The corresponding pcre modifier would be 'Z'.
 13 years ago
Anoop Saldanha c4ce19a1be Add support for a new keyword to inspect http_host header. 
The corresponding content keyword would now be - http_host.
The corresponding pcre modifier would be W.
 13 years ago
Last G 8ae11f73b2 Added parentheses to fix Eclipse static code analysis 
Fixed bug in action priority (REJECT_DST had lowest prio)
 13 years ago
Victor Julien 84bad6db77 Silence compiler warnings found by clang 13 years ago
Eric Leblond e176be6fcc Use unlikely for error treatment. 
When handling error case on SCMallog, SCCalloc or SCStrdup
we are in an unlikely case. This patch adds the unlikely()
expression to indicate this to gcc.

This patch has been obtained via coccinelle. The transformation
is the following:

@istested@
identifier x;
statement S1;
identifier func =~ "(SCMalloc|SCStrdup|SCCalloc)";
@@

x = func(...)
... when != x
- if (x == NULL) S1
+ if (unlikely(x == NULL)) S1
 13 years ago
pi-rho 0df4c5838d spelling corrections documented in redmine bug#533 13 years ago
Victor Julien e0bfcb7dde Only set SIG_FLAG_REQUIRE_STREAM if signature inspects TCP. 13 years ago
Anoop Saldanha bf6cd48259 if a sig's set as stream sig only, don't updated it as both stream and pkt sig if offset/depth's present 
bug #495 - update rule analyzer to not warn on offset_depth-tcp_pkt update if sig is stream only

bug #497 - rule_warnings fixed
 13 years ago
Anoop Saldanha 960d421f9d Update SigValidate() to allow http keywords to be specified in the right flow direction 13 years ago
Victor Julien ab421978f0 Free all sig match structs when freeing a signature. 13 years ago
Victor Julien af97c36c08 Properly clean signature's ip only data. 13 years ago
Victor Julien 19e3348cae Fix a reload memleak in the duplicate sig detection hash. 13 years ago
Anoop Saldanha 0d602d9cde we now support offset, depth inspection against all packet payloads and stream messages 13 years ago
Anoop Saldanha a34f91358d tests to highlight that 
- suricata treates sigs with offset/depth without any packet keywords as stream sigs
- as a consequence suricata will FN on such sigs

The tests introduced here will fail, displaying the issues.  The
next patch in the series would fix the said issues.
 13 years ago
Anoop Saldanha 988c92f71c http user agent keyword + mpm + inspection + fast pattern support added 13 years ago
Victor Julien 073ce64786 Fix parsing of tcp-pkt and tcp-stream sigs, add unittest. 13 years ago
Eileen Donlon da633d490b fix misleading comment 13 years ago
Victor Julien da3c5bf84d Minor error message cleanups 13 years ago
Victor Julien cdba2f50d1 Various fixes and improvements based on feedback by Coverity analyzer. 14 years ago
Anoop Saldanha 4810ee9c5f All uricontent modified patterns now are DETECT_CONTENT and not DETECT_URICONTENT. Step towards unifying all content based patterns. Makes way for easier management of patterns 14 years ago
Anoop Saldanha 93d7a6e671 code cleanup. Remove unused functions 14 years ago
Anoop Saldanha eb07c345b8 code cleanup - replace SigMatchAppendThreshold with SigMatchAppendSMToList 14 years ago
Anoop Saldanha dd7e710f35 code cleanup - replace SigMatchAppendPostMatch with SigMatchAppendSMToList 14 years ago