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Commit Graph

152 Commits (ab22385083fc8e52ba5115ce153dce796a6e3812)

Author SHA1 Message Date
Anoop Saldanha 603d4a719a remove det_ctx->payload_offset and use det_ctx->buffer_offset. Update hscd and hsmd to use the new generic content inspection engine 14 years ago
Anoop Saldanha 35f1f7e8d9 unify payload detection engines + fix other bugs in pcre init 14 years ago
Anoop Saldanha 09313cf9bd Support http stat code detection engine, fast pattern(mpm engine included). Fix http stat code setup function. Fix pcre option for stat msg keyword. With this the pcre options for server_body is Q, for stat_msg is Y and for stat_code is S 14 years ago
Anoop Saldanha 2007c2711c Support http stat msg detection engine, fast pattern(mpm engine included). Fix http stat msg setup function. Fix pcre option for stat msg keyword 14 years ago
Victor Julien 6aa0ad1c5f Remove unused definitions in pcre code. 14 years ago
Victor Julien bb6f93e675 Fix unittest missing a flow direction in the rule. 14 years ago
Eileen Donlon 39b8cc2f8b fixed relative handling for pcre cookie and method 14 years ago
Victor Julien 2d9449d060 Make code default for pcre match limit match the suricata.yaml default. 14 years ago
Victor Julien 28e15be526 Clean up default output. Use simpler output format for releases. 14 years ago
Victor Julien 077970051e file-data: implement relative pcre support. 14 years ago
Victor Julien 89f83e714c Introduce http_server_body keyword. 
The http_server_body content modifier modifies the previous content to inspect
the normalized (dechunked, unzipped) http_server_body. The workings are similar
to http_client_body. Additionally, a new pcre flag was introduced "/S".

To facilitate this change the signature flags field was changed to be 64 bit.
 14 years ago
Victor Julien 3009429e3c HTTP transaction handling improvement 
In some cases AppLayerTransactionGetInspectId can return -1, which is
now handled by all it's callers.

Improve logic of selecting which transactions are inspected by the various
HTTP keywords.
 14 years ago
Victor Julien 66a3cd96a8 Prepare HTTP response body tracking. 14 years ago
Anoop Saldanha 9a6aef459e modify all relevant app layer API calls to accomodate passing parser local storage argument 14 years ago
Victor Julien 262a7300d7 flow: shrink Flow datatype 
Introduce a separate FlowAddress structure for holding the ipv4 or ipv6 address
that doesn't have the family in it like the Address structure. Instead, the
family is stored in the flow as a flag: FLOW_IPV4 and FLOW_IPV6.

Add macro's to check the family, copy the address, etc.

Update many unittests to reflect these changes. Introduce unittest helper
functions for creating and initializing a flow and freeing it again.

On 64 bit this shrinks the flow with 8 bytes.
 14 years ago
Victor Julien 06904c9024 App Layer cleanup 
Removal of per flow 'aldata' array. It contained a ptr for each ALPROTO. Instead now we have 2 ptrs in the flow: alparser and alstate.
Various cleanups and dead code removal from the app layer API.
Should safe 100+ bytes memory per flow on 64 bit.
Updated lots of unittests to reflect these changes.
 14 years ago
Anoop Saldanha ed3b44b3b5 fix parsing content keywords. We are more strict now. All content keywords need to be enclosed in double quotes. Better validation for sid, priority and rev keywords 14 years ago
pilcrow f5017e0d1a Always try PCRE_NO_AUTO_CAPTURE first for signature regexes. 
Many, many pcre: signatures specify (...) when the more efficient
(?:...) is all that is needed.  This change attempts to force
PCRE_NO_AUTO_CAPTURE on all unnamed capture groups, reverting to
capturing when necessary, e.g., when \1 is referenced.
 14 years ago
Victor Julien 3d396e8b1e Update PCRE JIT code to support official JIT implementation in pcre-8.20-RC1. 14 years ago
William 6730c3ace1 Actually limit recursion and backtracking and stack usage by PCRE. Logic was broken, no example was provided in suricata.yaml even though it could be set from there. 14 years ago
William d74fe520e5 Experimental support for PCRE-sljit enable via --enable-pcre-sljit 14 years ago
Anoop Saldanha 966119b6aa support for http_raw_uri keyword + mpm engine 15 years ago
Victor Julien 1d971b53a6 Update all unittests 15 years ago
Anoop Saldanha ceb7fd748e support /D option for pcre - http raw header. Also support relative pcre for http raw header. All pcre processing for http header moved to hrhd engine 15 years ago
Victor Julien 39a5348d2b Remove dead pcre code. 15 years ago
Anoop Saldanha 8bd6a38318 support relative pcre for http header. All pcre processing for http header moved to hhd engine 15 years ago
Anoop Saldanha 2b781f00d7 support relative pcre for client body. All pcre processing for client body moved to hcbd engine 15 years ago
Anoop Saldanha 4883efd0f6 unifying content structure - uricontent now uses DetectContentData 15 years ago
Anoop Saldanha 3d2f81d978 replace all Signature->dmatch instances in the engine with Signature->sm_lists[DETECT_SM_LIST_DMATCH] 15 years ago
Anoop Saldanha e54358a9e1 replace all Signature->pmatch instances in the engine with Signature->sm_lists[DETECT_SM_LIST_PMATCH] 15 years ago
Victor Julien 66340be072 Fix pcre compilation with debug enabled. 15 years ago
Victor Julien fc248ca7a1 Many small performance updates. 15 years ago
Pablo Rincon 06a65cb460 moving http_client_body logic to use it per transactions. Adding unittests 15 years ago
Anoop Saldanha f094523eb1 clang fix - some minor fixes for unittests 15 years ago
Pablo Rincon f225bd1428 Adding modifiers /C /H and /M to pcre (http cookie, header and method) 15 years ago
Victor Julien 1071a53210 Fix unittests after ip_proto keyword change. 15 years ago
Anoop Saldanha ead29dc691 make detection engine use dce alstate(if present), on seeing smb traffic 15 years ago
Victor Julien 37ca07b687 Fix segv on loading signatures with unsupported combinations of pcre and the relative flag. 15 years ago
Anoop Saldanha b94eaec7c2 implement relative pcre matching in detect-engine-(payload|uri|dcepayload).c. Also fix within/distance handling of RELATIVE_NEXT flag for uricontent 15 years ago
Anoop Saldanha ce8d27425d fix signature parsing to how snort does it for content based keywords along with dce_stub_data 15 years ago
Pablo Rincon eedafa3a17 Adding unittests for anchored pcres for anchored 15 years ago
Anoop Saldanha 36e4b1830e add pcre with U modifiers to the umatch sigmatch list. fix for bug 155 15 years ago
Gurvinder Singh 8852b83fa7 flowbits, flowvars, pktvars, flow flags and app layer info added to alert-debug.log 15 years ago
William Metcalf 0e4235cc94 FLOW_DESTROY added to clean-up UT's that init flow 15 years ago
Victor Julien 2f29b8a724 Improve detection of app layer, making sure we only handle app layer on 'established' packets. Should really fix #166. 15 years ago
Anoop Saldanha 015385c6bd changes to the dce parser stub data processed var. changed to stub data fresh var to indicate if the stub is fresh or not 15 years ago
Anoop Saldanha 45ea0d914e dce stub content keywords support using dcepayload.c support for all dce related content keywords 15 years ago
Pablo Rincon 8cc525c939 UDP support at AppLayer message handling 15 years ago
William Metcalf cc76aa4bc6 properly init flows inside of unit-tests caused lock-up when falling back to using mutex locks 15 years ago
Victor Julien a0c1209a44 Inspect the reassembled stream together with the packet payload in the same direction. 15 years ago
Victor Julien 70b32f7380 First stab at creating a stateful detection engine. 
Stateful detection for app layer detection keywords, except uricontent. Stores it's partial results in the flow structure. Other modifications:

- Generalize transaction tracking, logging and inspection.
- Adapt http and dcerpc to use the new transaction handling.
- Stream engine now always notifies app layer of a stream eof.

This commit fixes bug #124.
 15 years ago
Gerardo Iglesias Galvan 9f4fae5b1a Fix inconsistent use of dynamic memory allocation 15 years ago
Gurvinder Singh fdc3f728af set the isdataat keyword when previous sigmatch is either content or pcre (bug 144) 15 years ago
William Metcalf ce01927515 Import of GPLv2 Header 050410 16 years ago
Gurvinder Singh 7330bcd12c fixed the regex in bug 136 16 years ago
Gurvinder Singh 0c4687f768 correct the typos (but 135) 16 years ago
Victor Julien 78e15ea7fa Explicitly test for ipv6 in the htp personalities code. Update all affected unittests to set addr family to the flow. 16 years ago
Pablo Rincon 720f46642f Fix redmine issue 49 (allow pcre to end a pattern with an escaped slash, '\') 16 years ago
Anoop Saldanha 97d49d8f5e support for http_client_body keyword 16 years ago
Victor Julien 7a8cd61fdf Cleanups. 16 years ago
Victor Julien 8b30226914 Detection keyword cleanup 16 years ago
Victor Julien b259e362cd Convert uricontent to use new scanning methods as well. Move http_method and http_cookie keywords out of pmatch list for now. 16 years ago
Victor Julien bef70a04ce First stage of detect engine redesign: equal patterns share id's, search phase no longer used, new match verification phase. 16 years ago
Pablo Rincon 25a3a5c6d8 Adding mem wrapper to debug runtime alloc()/free() functions. Fixing some memory leaks. 16 years ago
Victor Julien 963691387a Disable unused uri scanning code. 16 years ago
Pablo Rincon 0165b3f0d8 pcre P modifier support (pcre match over http body requests) 16 years ago
Gerardo Iglesias Galvan ba6d807a6e Improve information about errors on signature failure 16 years ago
Jason Ish 9e4da4f8e7 supply pcre_get_substring with the proper start of the string. 16 years ago
Gurvinder Singh 356a8bf385 applayer uri match and modified http handling 16 years ago
Victor Julien 0d3da34f64 remove unused variables 16 years ago
Steve Grubb 60ad9d29c5 Memory leak cleanup in detectors 
Hello,

I ran the code through an analysis program and found several leaks that
should be cleaned up.

*In src/detect-engine-address-ipv4.c at line 472, the test for ag == NULL
will never be true since that is the loop entry test.
*In src/detect-engine-port.c at line 1133, the test for p == NULL will
never be true since that is the loop entry test.
*In src/detect-engine-mpm.c at line 263 is a return without freeing
fast_pattern
*In src/detect-ack.c at line 80 and 85, data catches the return from malloc.
One of them should be deleted.
*In src/detect-seq.c at line 81 and 86, data catches the return from malloc.
One of them should be deleted.
*In src/detect-content.c at line 749, many of the paths that lead to the error
exit still has temp pointing to allocated memory. To clean this up, temp
should be set to NULL if not immediately assigning and new value.
*In src/detect-uricontent.c at line 319, both cd and str needto be freed. At
lines 344, str needs to be freed. And at line 347 str and temp need to be
freed.
*In src/detect-flowbits.c at line 231 and 235, str was not being freed. cd was
not being freed at line 235.
*In src/detect-flowvar.c at line 127, str was not being freed. At line 194, cd
and str were not being freed.
*In src/detect-flowint.c at line 277, sfd was not being freed. At line 315, str
was not being freed.
*In src/detect-pktvar.c at line 121, str was not being freed. At line 188, str
and cd was not being freed.
*In src/detect-pcre.c at line 389, there is an extra free of "re" that should
be deleted.
*In src/detect-depth.c at line 42 & 48, str has not been freed.
*In src/detect-distance.c at line 49 and 55, str has not been freed
*In src/detect-offset.c at line 45, str has not been freed.

The patch below fixes these issues.

-Steve
 16 years ago
Victor Julien 42e8a01221 Make sure pcre PCRE_EXTRA_MATCH_LIMIT_RECURSION check works with strict compiler settings. 16 years ago
William Metcalf 5bde121754 --enable-gccprofile sets -pg flag detect presence of pcre recursion 16 years ago
Victor Julien ef6ab4efa0 Add pcre negate support. 16 years ago
William Metcalf 1d553c940b failing unit test showing negated pcre treated as nonnegated match 16 years ago
Pablo Rincon 0e83759ed4 Small fix 16 years ago
Victor Julien ecf86f9c23 Rename to Suricata. 16 years ago
Pablo Rincon a8d7b71490 First version of flowints 16 years ago
Breno Silva c552ccbd93 PCRE O Modifier 16 years ago
Victor Julien 2d0e9658f8 Speed up per sgh content maxlen calc. Remove mpm ptrs from mpm ctx. Add unittests testing the detection engine internals. 16 years ago
Victor Julien 7a7bb7a390 Get rid of global mpm_ctx. 16 years ago
Victor Julien d4733e3a76 Move pcre test out of detect.c 16 years ago
William Metcalf 86380b9d45 split out pcre parsing fixed some errors 16 years ago
Gurvinder Singh a991ab0a19 added sigmatch payload flag 16 years ago
Victor Julien 91bc83e5c6 More logging API usage changes. 16 years ago
Victor Julien 0d0ffb9963 Reorganize header inclusions. 16 years ago
Victor Julien 1132ab635a Rename all pmt->det_ctx. 16 years ago
Victor Julien b9972a9d2c Cleanups 16 years ago
Victor Julien 97854cf4bb Fixup some rule parser memleaks 16 years ago
Victor Julien 451adaff34 Small name support code update for flowbits, flowvars and pktvars. 16 years ago
Brian Rectanus fa5939ca91 64 bit cleanup part2 16 years ago
Victor Julien ff4b5a5db7 Add support for flowbits. 16 years ago
Victor Julien 657be002d1 Big detection engine update: scan improvements, b2g/b3g updates, bloom fixes, iponly detection implementation, dsize/flow grouping. 16 years ago
Victor Julien 5df5b35e90 Put all globals in the detection engine ctx. Add HashList type, a hash that also stores the items ina list to it can be traversed. Many cleanups. 16 years ago
Victor Julien efb10fc0d6 big update 16 years ago
Victor Julien c4f2fe4bd7 Implement per packet variables and switch the http stuff to it. 16 years ago
Victor Julien 54ffe2053e Large detection engine update. 16 years ago
Victor Julien b1a13c89bd Improve memory handling of the pcre rule keyword. 16 years ago
Victor Julien 69162f9cd0 Fix issue with log-httplog where it logged uri's of previous packets because of a broken uri check. 16 years ago
Victor Julien dc224cb2d2 Large update containing the first step to making the detection engine use rule groups. Address based rule groups are now implemented. 16 years ago