mirror of
https://github.com/zeek/zeek.git
synced 2025-10-06 16:48:19 +00:00
Merge remote-tracking branch 'origin/topic/jsiwek/file-analysis' into topic/seth/file-analysis-exe-analyzer
Conflicts: src/CMakeLists.txt src/file_analysis.bif src/file_analysis/Info.cc
This commit is contained in:
commit
e0276384e7
318 changed files with 8499 additions and 2109 deletions
123
CHANGES
123
CHANGES
|
@ -1,4 +1,127 @@
|
|||
|
||||
2.1-386 | 2013-03-22 12:41:50 -0700
|
||||
|
||||
* Added reverse() function to strings.bif. (Yun Zheng Hu)
|
||||
|
||||
2.1-384 | 2013-03-22 12:10:14 -0700
|
||||
|
||||
* Fix record constructors in table initializer indices. Addresses
|
||||
#660. (Jon Siwek)
|
||||
|
||||
2.1-382 | 2013-03-22 12:01:34 -0700
|
||||
|
||||
* Add support for 802.1ah (Q-in-Q). Addresses #641. (Seth Hall)
|
||||
|
||||
2.1-380 | 2013-03-18 12:18:10 -0700
|
||||
|
||||
* Fix gcc compile warnings in base64 encoder and benchmark reader.
|
||||
(Bernhard Amann)
|
||||
|
||||
2.1-377 | 2013-03-17 17:36:09 -0700
|
||||
|
||||
* Fixing potential leak in DNS error case. (Vlad Grigorescu)
|
||||
|
||||
2.1-375 | 2013-03-17 13:14:26 -0700
|
||||
|
||||
* Add base64 encoding functionality, including new BiFs
|
||||
encode_base64() and encode_base64_custom(). (Bernhard Amann)
|
||||
|
||||
* Replace call to external "openssl" in extract-certs-pem.bro with
|
||||
that encode_base64(). (Bernhard Amann)
|
||||
|
||||
* Adding a test for extract-certs-pem.pem. (Robin Sommer)
|
||||
|
||||
* Renaming Base64Decoder to Base64Converter. (Robin Sommer)
|
||||
|
||||
2.1-366 | 2013-03-17 12:35:59 -0700
|
||||
|
||||
* Correctly handle DNS lookups for software version ranges. (Seth
|
||||
Hall)
|
||||
|
||||
* Improvements to vulnerable software detection. (Seth Hall)
|
||||
|
||||
- Add a DNS based updating method. This needs to be tested
|
||||
still.
|
||||
|
||||
- Vulnerable version ranges are used now instead of only single
|
||||
versions. This can deal with software with multiple stable
|
||||
major versions.
|
||||
|
||||
* Update software version parsing and comparison to account for a
|
||||
third numeric subversion. Also, $addl is now compared numerically
|
||||
if the value is actually numeric. (Seth Hall)
|
||||
|
||||
2.1-361 | 2013-03-13 07:18:22 -0700
|
||||
|
||||
* Add check for truncated link frames. Addresses #962. (Jacob
|
||||
Baines)
|
||||
|
||||
* Fix large memory allocation in IP fragment reassembly. Addresses
|
||||
#961. (Jacob Baines)
|
||||
|
||||
2.1-357 | 2013-03-08 09:18:35 -0800
|
||||
|
||||
* Fix race-condition in table-event test. (Bernhard Amann)
|
||||
|
||||
* s/bro-ids.org/bro.org/g. (Robin Sommer)
|
||||
|
||||
2.1-353 | 2013-03-07 13:31:37 -0800
|
||||
|
||||
* Fix function type-equivalence requiring same parameter names.
|
||||
Addresses #957. (Jon Siwek)
|
||||
|
||||
2.1-351 | 2013-03-07 13:27:29 -0800
|
||||
|
||||
* Fix new/delete mismatch. Addresses #958. (Jacob Baines)
|
||||
|
||||
* Fix compiler warnings. (Jon Siwek)
|
||||
|
||||
2.1-347 | 2013-03-06 16:48:44 -0800
|
||||
|
||||
* Remove unused parameter from vector assignment method. (Bernhard Amann)
|
||||
|
||||
* Remove the byte_len() and length() bifs. (Bernhard Amann)
|
||||
|
||||
2.1-342 | 2013-03-06 15:42:52 -0800
|
||||
|
||||
* Moved the Notice::notice event and Notice::policy table to both be
|
||||
hooks. See documentation and NEWS for information. (Seth Hall).
|
||||
|
||||
2.1-338 | 2013-03-06 15:10:43 -0800
|
||||
|
||||
* Fix init of local sets/vectors via curly brace initializer lists.
|
||||
(Jon Siwek)
|
||||
|
||||
2.1-336 | 2013-03-06 15:08:06 -0800
|
||||
|
||||
* Fix memory leaks resulting from 'when' and 'return when'
|
||||
statements. Addresses #946. (Jon Siwek)
|
||||
|
||||
* Fix three bugs with 'when' and 'return when' statements. Addresses
|
||||
#946. (Jon Siwek)
|
||||
|
||||
2.1-333 | 2013-03-06 14:59:47 -0800
|
||||
|
||||
* Add parsing for GTPv1 extension headers and control messages. (Jon Siwek)
|
||||
|
||||
This includes:
|
||||
|
||||
- A new generic gtpv1_message() event generated for any GTP
|
||||
message type.
|
||||
|
||||
- Specific events for the create/update/delete PDP context
|
||||
request/response messages.
|
||||
|
||||
Addresses #934.
|
||||
|
||||
2.1-331 | 2013-03-06 14:54:33 -0800
|
||||
|
||||
* Fix possible null pointer dereference in identify_data BIF. Also
|
||||
centralized libmagic calls for consistent error handling/output.
|
||||
(Jon Siwek)
|
||||
|
||||
* Fix build on OpenBSD 5.2. (Jon Siwek)
|
||||
|
||||
2.1-328 | 2013-02-05 01:34:29 -0500
|
||||
|
||||
* New script to query the ICSI Certificate Notary
|
||||
|
|
12
INSTALL
12
INSTALL
|
@ -4,7 +4,7 @@
|
|||
.. _MacPorts: http://www.macports.org
|
||||
.. _Fink: http://www.finkproject.org
|
||||
.. _Homebrew: http://mxcl.github.com/homebrew
|
||||
.. _bro downloads page: http://bro-ids.org/download/index.html
|
||||
.. _bro downloads page: http://bro.org/download/index.html
|
||||
|
||||
==============
|
||||
Installing Bro
|
||||
|
@ -189,15 +189,15 @@ Bro releases are bundled into source packages for convenience and
|
|||
available from the `bro downloads page`_.
|
||||
|
||||
Alternatively, the latest Bro development version can be obtained through git
|
||||
repositories hosted at `git.bro-ids.org <http://git.bro-ids.org>`_. See
|
||||
repositories hosted at `git.bro.org <http://git.bro.org>`_. See
|
||||
our `git development documentation
|
||||
<http://bro-ids.org/development/process.html>`_ for comprehensive
|
||||
<http://bro.org/development/process.html>`_ for comprehensive
|
||||
information on Bro's use of git revision control, but the short story
|
||||
for downloading the full source code experience for Bro via git is:
|
||||
|
||||
.. console::
|
||||
|
||||
git clone --recursive git://git.bro-ids.org/bro
|
||||
git clone --recursive git://git.bro.org/bro
|
||||
|
||||
.. note:: If you choose to clone the ``bro`` repository non-recursively for
|
||||
a "minimal Bro experience", be aware that compiling it depends on
|
||||
|
@ -230,7 +230,7 @@ automatically. Finally, use ``make install-aux`` to install some of
|
|||
the other programs that are in the ``aux/bro-aux`` directory.
|
||||
|
||||
OpenBSD users, please see our FAQ at
|
||||
http://www.bro-ids.org/documentation/faq.html if you are having
|
||||
http://www.bro.org/documentation/faq.html if you are having
|
||||
problems installing Bro.
|
||||
|
||||
|
||||
|
@ -298,7 +298,7 @@ Running Bro
|
|||
|
||||
Bro is a complex program and it takes a bit of time to get familiar
|
||||
with it. A good place for newcomers to start is the Quick Start Guide
|
||||
at http://www.bro-ids.org/documentation/quickstart.html.
|
||||
at http://www.bro.org/documentation/quickstart.html.
|
||||
|
||||
For developers that wish to run Bro directly from the ``build/``
|
||||
directory (i.e., without performing ``make install``), they will have
|
||||
|
|
49
NEWS
49
NEWS
|
@ -67,6 +67,7 @@ Changed Functionality
|
|||
- md5_*, sha1_*, sha256_*, and entropy_* have all changed
|
||||
their signatures to work with opaque types (see above).
|
||||
|
||||
|
||||
- Removed a now unused argument from "do_split" helper function.
|
||||
|
||||
- "this" is no longer a reserved keyword.
|
||||
|
@ -81,6 +82,50 @@ Changed Functionality
|
|||
value can now be set with the new broctl.cfg option
|
||||
"MailAlarmsInterval".
|
||||
|
||||
- We have completely reworded the "notice_policy" mechanism. It now no
|
||||
linger uses a record of policy items but a "hook", a new language
|
||||
element that's roughly equivalent to a function with multiple
|
||||
bodies. The documentation [TODO: insert link] describes how to use
|
||||
the new notice policy. For existing code, the two main changes are:
|
||||
|
||||
- What used to be a "redef" of "Notice::policy" now becomes a hook
|
||||
implementation. Example:
|
||||
|
||||
Old:
|
||||
|
||||
redef Notice::policy += {
|
||||
[$pred(n: Notice::Info) = {
|
||||
return n$note == SSH::Login && n$id$resp_h == 10.0.0.1;
|
||||
},
|
||||
$action = Notice::ACTION_EMAIL]
|
||||
};
|
||||
|
||||
New:
|
||||
|
||||
hook Notice::policy(n: Notice::Info)
|
||||
{
|
||||
if ( n$note == SSH::Login && n$id$resp_h == 10.0.0.1 )
|
||||
add n$actions[Notice::ACTION_EMAIL];
|
||||
}
|
||||
|
||||
- notice() is now likewise a hook, no longer an event. If you have
|
||||
handlers for that event, you'll likely just need to change the
|
||||
type accordingly. Example:
|
||||
|
||||
Old:
|
||||
|
||||
event notice(n: Notice::Info) { ... }
|
||||
|
||||
New:
|
||||
|
||||
hook notice(n: Notice::Info) { ... }
|
||||
|
||||
- The notice_policy.log is gone. That's a result of the new notice
|
||||
policy setup.
|
||||
|
||||
- Removed the byte_len() and length() bif functions. Use the "|...|"
|
||||
operator instead.
|
||||
|
||||
Bro 2.1
|
||||
-------
|
||||
|
||||
|
@ -247,7 +292,7 @@ Bro 2.0
|
|||
As the version number jump suggests, Bro 2.0 is a major upgrade and
|
||||
lots of things have changed. We have assembled a separate upgrade
|
||||
guide with the most important changes compared to Bro 1.5 at
|
||||
http://www.bro-ids.org/documentation/upgrade.html. You can find
|
||||
http://www.bro.org/documentation/upgrade.html. You can find
|
||||
the offline version of that document in ``doc/upgrade.rst.``.
|
||||
|
||||
Compared to the earlier 2.0 Beta version, the major changes in the
|
||||
|
@ -255,7 +300,7 @@ final release are:
|
|||
|
||||
* The default scripts now come with complete reference
|
||||
documentation. See
|
||||
http://www.bro-ids.org/documentation/index.html.
|
||||
http://www.bro.org/documentation/index.html.
|
||||
|
||||
* libz and libmagic are now required dependencies.
|
||||
|
||||
|
|
2
README
2
README
|
@ -11,7 +11,7 @@ Please see COPYING for licensing information.
|
|||
For more documentation, research publications, and community contact
|
||||
information, please see Bro's home page:
|
||||
|
||||
http://www.bro-ids.org
|
||||
http://www.bro.org
|
||||
|
||||
On behalf of the Bro Development Team,
|
||||
|
||||
|
|
2
VERSION
2
VERSION
|
@ -1 +1 @@
|
|||
2.1-328
|
||||
2.1-386
|
||||
|
|
|
@ -1 +1 @@
|
|||
Subproject commit 2fd9086c9dc0e76f6ff1ae04a60cbbce60507aab
|
||||
Subproject commit 72d121ade5a37df83d3252646de51cb77ce69a89
|
|
@ -1 +1 @@
|
|||
Subproject commit bea556198b69d30d64c0cf1b594e6de71176df6f
|
||||
Subproject commit 70681007546aad6e5648494e882b71adb9165105
|
|
@ -1 +1 @@
|
|||
Subproject commit c1ba9b44c4815c61c54c968f462ec5b0865e5990
|
||||
Subproject commit e64204fec55759c614a276c1933bbff2069a63db
|
|
@ -1 +1 @@
|
|||
Subproject commit 2bf6b37177b895329173acac2bb98f38a8783bc1
|
||||
Subproject commit 2b35d0331366865fbf0119919cc9692d55c4538c
|
|
@ -1 +1 @@
|
|||
Subproject commit ba0700fe448895b654b90d50f389f6f1341234cb
|
||||
Subproject commit d5b8df42cb9c398142e02d4bf8ede835fd0227f4
|
2
cmake
2
cmake
|
@ -1 +1 @@
|
|||
Subproject commit 14537f56d66b18ab9d5024f798caf4d1f356fc67
|
||||
Subproject commit 94e72a3075bb0b9550ad05758963afda394bfb2c
|
4
doc/_templates/layout.html
vendored
4
doc/_templates/layout.html
vendored
|
@ -10,7 +10,7 @@
|
|||
{% endblock %}
|
||||
|
||||
{% block header %}
|
||||
<iframe src="http://www.bro-ids.org/frames/header-no-logo.html" width="100%" height="100px" frameborder="0" marginheight="0" scrolling="no" marginwidth="0">
|
||||
<iframe src="http://www.bro.org/frames/header-no-logo.html" width="100%" height="100px" frameborder="0" marginheight="0" scrolling="no" marginwidth="0">
|
||||
</iframe>
|
||||
{% endblock %}
|
||||
|
||||
|
@ -108,6 +108,6 @@
|
|||
{% endblock %}
|
||||
|
||||
{% block footer %}
|
||||
<iframe src="http://www.bro-ids.org/frames/footer.html" width="100%" height="420px" frameborder="0" marginheight="0" scrolling="no" marginwidth="0">
|
||||
<iframe src="http://www.bro.org/frames/footer.html" width="100%" height="420px" frameborder="0" marginheight="0" scrolling="no" marginwidth="0">
|
||||
</iframe>
|
||||
{% endblock %}
|
||||
|
|
|
@ -53,7 +53,7 @@ Other Bro Components
|
|||
The following are snapshots of documentation for components that come
|
||||
with this version of Bro (|version|). Since they can also be used
|
||||
independently, see the `download page
|
||||
<http://bro-ids.org/download/index.html>`_ for documentation of any
|
||||
<http://bro.org/download/index.html>`_ for documentation of any
|
||||
current, independent component releases.
|
||||
|
||||
.. toctree::
|
||||
|
|
155
doc/notice.rst
155
doc/notice.rst
|
@ -6,7 +6,7 @@ Notice Framework
|
|||
|
||||
One of the easiest ways to customize Bro is writing a local notice
|
||||
policy. Bro can detect a large number of potentially interesting
|
||||
situations, and the notice policy tells which of them the user wants to be
|
||||
situations, and the notice policy hook which of them the user wants to be
|
||||
acted upon in some manner. In particular, the notice policy can specify
|
||||
actions to be taken, such as sending an email or compiling regular
|
||||
alarm emails. This page gives an introduction into writing such a notice
|
||||
|
@ -24,8 +24,8 @@ of interest for the user. However, none of these scripts determines the
|
|||
importance of what it finds itself. Instead, the scripts only flag situations
|
||||
as *potentially* interesting, leaving it to the local configuration to define
|
||||
which of them are in fact actionable. This decoupling of detection and
|
||||
reporting allows Bro to address the different needs that sites have:
|
||||
definitions of what constitutes an attack or even a compromise differ quite a
|
||||
reporting allows Bro to address the different needs that sites have.
|
||||
Definitions of what constitutes an attack or even a compromise differ quite a
|
||||
bit between environments, and activity deemed malicious at one site might be
|
||||
fully acceptable at another.
|
||||
|
||||
|
@ -40,7 +40,7 @@ More information about raising notices can be found in the `Raising Notices`_
|
|||
section.
|
||||
|
||||
Once a notice is raised, it can have any number of actions applied to it by
|
||||
the :bro:see:`Notice::policy` set which is described in the `Notice Policy`_
|
||||
writing :bro:see:`Notice::policy` hooks which is described in the `Notice Policy`_
|
||||
section below. Such actions can be to send a mail to the configured
|
||||
address(es) or to simply ignore the notice. Currently, the following actions
|
||||
are defined:
|
||||
|
@ -68,12 +68,6 @@ are defined:
|
|||
- Send an email to the email address or addresses given in the
|
||||
:bro:see:`Notice::mail_page_dest` variable.
|
||||
|
||||
* - Notice::ACTION_NO_SUPPRESS
|
||||
- This action will disable the built in notice suppression for the
|
||||
notice. Keep in mind that this action will need to be applied to
|
||||
every notice that shouldn't be suppressed including each of the future
|
||||
notices that would have normally been suppressed.
|
||||
|
||||
How these notice actions are applied to notices is discussed in the
|
||||
`Notice Policy`_ and `Notice Policy Shortcuts`_ sections.
|
||||
|
||||
|
@ -83,26 +77,24 @@ Processing Notices
|
|||
Notice Policy
|
||||
*************
|
||||
|
||||
The predefined set :bro:see:`Notice::policy` provides the mechanism for
|
||||
applying actions and other behavior modifications to notices. Each entry
|
||||
of :bro:see:`Notice::policy` is a record of the type
|
||||
:bro:see:`Notice::PolicyItem` which defines a condition to be matched
|
||||
against all raised notices and one or more of a variety of behavior
|
||||
modifiers. The notice policy is defined by adding any number of
|
||||
:bro:see:`Notice::PolicyItem` records to the :bro:see:`Notice::policy`
|
||||
set.
|
||||
The hook :bro:see:`Notice::policy` provides the mechanism for applying
|
||||
actions and generally modifying the notice before it's sent onward to
|
||||
the action plugins. Hooks can be thought of as multi-bodied functions
|
||||
and using them looks very similar to handling events. The difference
|
||||
is that they don't go through the event queue like events. Users should
|
||||
directly make modifications to the :bro:see:`Notice::Info` record
|
||||
given as the argument to the hook.
|
||||
|
||||
Here's a simple example which tells Bro to send an email for all notices of
|
||||
type :bro:see:`SSH::Login` if the server is 10.0.0.1:
|
||||
|
||||
.. code:: bro
|
||||
|
||||
redef Notice::policy += {
|
||||
[$pred(n: Notice::Info) = {
|
||||
return n$note == SSH::Login && n$id$resp_h == 10.0.0.1;
|
||||
},
|
||||
$action = Notice::ACTION_EMAIL]
|
||||
};
|
||||
hook Notice::policy(n: Notice::Info)
|
||||
{
|
||||
if ( n$note == SSH::Login && n$id$resp_h == 10.0.0.1 )
|
||||
add n$actions[Notice::ACTION_EMAIL];
|
||||
}
|
||||
|
||||
.. note::
|
||||
|
||||
|
@ -110,78 +102,21 @@ type :bro:see:`SSH::Login` if the server is 10.0.0.1:
|
|||
such that it is only raised when Bro heuristically detects a successful
|
||||
login. No apparently failed logins will raise this notice.
|
||||
|
||||
While the syntax might look a bit convoluted at first, it provides a lot of
|
||||
flexibility due to having access to Bro's full programming language.
|
||||
|
||||
Predicate Field
|
||||
^^^^^^^^^^^^^^^
|
||||
|
||||
The :bro:see:`Notice::PolicyItem` record type has a field name ``$pred``
|
||||
which defines the entry's condition in the form of a predicate written
|
||||
as a Bro function. The function is passed the notice as a
|
||||
:bro:see:`Notice::Info` record and it returns a boolean value indicating
|
||||
if the entry is applicable to that particular notice.
|
||||
|
||||
.. note::
|
||||
|
||||
The lack of a predicate in a ``Notice::PolicyItem`` is implicitly true
|
||||
(``T``) since an implicit false (``F``) value would never be used.
|
||||
|
||||
Bro evaluates the predicates of each entry in the order defined by the
|
||||
``$priority`` field in :bro:see:`Notice::PolicyItem` records. The valid
|
||||
values are 0-10 with 10 being earliest evaluated. If ``$priority`` is
|
||||
omitted, the default priority is 5.
|
||||
|
||||
Behavior Modification Fields
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
There are a set of fields in the :bro:see:`Notice::PolicyItem` record type that
|
||||
indicate ways that either the notice or notice processing should be modified
|
||||
if the predicate field (``$pred``) evaluated to true (``T``). Those fields are
|
||||
explained in more detail in the following table.
|
||||
|
||||
.. list-table::
|
||||
:widths: 20 30 20
|
||||
:header-rows: 1
|
||||
|
||||
* - Field
|
||||
- Description
|
||||
- Example
|
||||
|
||||
* - ``$action=<Notice::Action>``
|
||||
- Each :bro:see:`Notice::PolicyItem` can have a single action
|
||||
applied to the notice with this field.
|
||||
- ``$action = Notice::ACTION_EMAIL``
|
||||
|
||||
* - ``$suppress_for=<interval>``
|
||||
- This field makes it possible for a user to modify the behavior of the
|
||||
notice framework's automated suppression of intrinsically similar
|
||||
notices. More information about the notice framework's automated
|
||||
suppression can be found in the `Automated Suppression`_ section of
|
||||
this document.
|
||||
- ``$suppress_for = 10mins``
|
||||
|
||||
* - ``$halt=<bool>``
|
||||
- This field can be used for modification of the notice policy
|
||||
evaluation. To stop processing of notice policy items before
|
||||
evaluating all of them, set this field to ``T`` and make the ``$pred``
|
||||
field return ``T``. :bro:see:`Notice::PolicyItem` records defined at
|
||||
a higher priority as defined by the ``$priority`` field will still be
|
||||
evaluated but those at a lower priority won't.
|
||||
- ``$halt = T``
|
||||
|
||||
|
||||
Hooks can also have priorities applied to order their execution like events
|
||||
with a default priority of 0. Greater values are executed first. Setting
|
||||
a hook body to run before default hook bodies might look like this:
|
||||
|
||||
.. code:: bro
|
||||
|
||||
redef Notice::policy += {
|
||||
[$pred(n: Notice::Info) = {
|
||||
return n$note == SSH::Login && n$id$resp_h == 10.0.0.1;
|
||||
},
|
||||
$action = Notice::ACTION_EMAIL,
|
||||
$priority=5]
|
||||
};
|
||||
hook Notice::policy(n: Notice::Info) &priority=5
|
||||
{
|
||||
if ( n$note == SSH::Login && n$id$resp_h == 10.0.0.1 )
|
||||
add n$actions[Notice::ACTION_EMAIL];
|
||||
}
|
||||
|
||||
Hooks can also abort later hook bodies with the ``break`` keyword. This
|
||||
is primarily useful if one wants to completely preempt processing by
|
||||
lower priority :bro:see:`Notice::policy` hooks.
|
||||
|
||||
Notice Policy Shortcuts
|
||||
***********************
|
||||
|
@ -189,7 +124,7 @@ Notice Policy Shortcuts
|
|||
Although the notice framework provides a great deal of flexibility and
|
||||
configurability there are many times that the full expressiveness isn't needed
|
||||
and actually becomes a hindrance to achieving results. The framework provides
|
||||
a default :bro:see:`Notice::policy` suite as a way of giving users the
|
||||
a default :bro:see:`Notice::policy` hook body as a way of giving users the
|
||||
shortcuts to easily apply many common actions to notices.
|
||||
|
||||
These are implemented as sets and tables indexed with a
|
||||
|
@ -377,19 +312,45 @@ Setting the ``$identifier`` field is left to those raising notices because
|
|||
it's assumed that the script author who is raising the notice understands the
|
||||
full problem set and edge cases of the notice which may not be readily
|
||||
apparent to users. If users don't want the suppression to take place or simply
|
||||
want a different interval, they can always modify it with the
|
||||
:bro:see:`Notice::policy`.
|
||||
want a different interval, they can set a notice's suppression
|
||||
interval to ``0secs`` or delete the value from the ``$identifier`` field in
|
||||
a :bro:see:`Notice::policy` hook.
|
||||
|
||||
|
||||
Extending Notice Framework
|
||||
--------------------------
|
||||
|
||||
Adding Custom Notice Actions
|
||||
****************************
|
||||
There are a couple of mechanism currently for extending the notice framework
|
||||
and adding new capability.
|
||||
|
||||
Extending Notice Emails
|
||||
***********************
|
||||
|
||||
If there is extra information that you would like to add to emails, that is
|
||||
possible to add by writing :bro:see:`Notice::policy` hooks.
|
||||
|
||||
There is a field in the :bro:see:`Notice::Info` record named
|
||||
``$email_body_sections`` which will be included verbatim when email is being
|
||||
sent. An example of including some information from an HTTP request is
|
||||
included below.
|
||||
|
||||
.. code:: bro
|
||||
|
||||
hook Notice::policy(n: Notice::Info)
|
||||
{
|
||||
if ( n?$conn && n$conn?$http && n$conn$http?$host )
|
||||
n$email_body_sections[|email_body_sections|] = fmt("HTTP host header: %s", n$conn$http$host);
|
||||
}
|
||||
|
||||
|
||||
Cluster Considerations
|
||||
----------------------
|
||||
|
||||
As a user/developer of Bro, the main cluster concern with the notice framework
|
||||
is understanding what runs where. When a notice is generated on a worker, the
|
||||
worker checks to see if the notice shoudl be suppressed based on information
|
||||
locally maintained in the worker process. If it's not being
|
||||
suppressed, the worker forwards the notice directly to the manager and does no more
|
||||
local processing. The manager then runs the :bro:see:`Notice::policy` hook and
|
||||
executes all of the actions determined to be run.
|
||||
|
||||
|
|
|
@ -111,7 +111,7 @@ protocol-dependent activity that's occurring. E.g. ``http.log``'s next few
|
|||
columns (shortened for brevity) show a request to the root of Bro website::
|
||||
|
||||
# method host uri referrer user_agent
|
||||
GET bro-ids.org / - <...>Chrome/12.0.742.122<...>
|
||||
GET bro.org / - <...>Chrome/12.0.742.122<...>
|
||||
|
||||
Some logs are worth explicit mention:
|
||||
|
||||
|
|
|
@ -19,7 +19,7 @@ Reporting Problems
|
|||
|
||||
Generally, when you encounter a problem with Bro, the best thing to do
|
||||
is opening a new ticket in `Bro's issue tracker
|
||||
<http://tracker.bro-ids.org/>`__ and include information on how to
|
||||
<http://tracker.bro.org/>`__ and include information on how to
|
||||
reproduce the issue. Ideally, your ticket should come with the
|
||||
following:
|
||||
|
||||
|
|
|
@ -37,6 +37,7 @@ rest_target(${psd} base/frameworks/file-analysis/main.bro)
|
|||
rest_target(${psd} base/frameworks/input/main.bro)
|
||||
rest_target(${psd} base/frameworks/input/readers/ascii.bro)
|
||||
rest_target(${psd} base/frameworks/input/readers/benchmark.bro)
|
||||
rest_target(${psd} base/frameworks/input/readers/binary.bro)
|
||||
rest_target(${psd} base/frameworks/input/readers/raw.bro)
|
||||
rest_target(${psd} base/frameworks/intel/cluster.bro)
|
||||
rest_target(${psd} base/frameworks/intel/input.bro)
|
||||
|
@ -59,6 +60,7 @@ rest_target(${psd} base/frameworks/notice/actions/pp-alarms.bro)
|
|||
rest_target(${psd} base/frameworks/notice/cluster.bro)
|
||||
rest_target(${psd} base/frameworks/notice/extend-email/hostnames.bro)
|
||||
rest_target(${psd} base/frameworks/notice/main.bro)
|
||||
rest_target(${psd} base/frameworks/notice/non-cluster.bro)
|
||||
rest_target(${psd} base/frameworks/notice/weird.bro)
|
||||
rest_target(${psd} base/frameworks/packet-filter/main.bro)
|
||||
rest_target(${psd} base/frameworks/packet-filter/netstats.bro)
|
||||
|
@ -73,21 +75,25 @@ rest_target(${psd} base/protocols/conn/main.bro)
|
|||
rest_target(${psd} base/protocols/conn/polling.bro)
|
||||
rest_target(${psd} base/protocols/dns/consts.bro)
|
||||
rest_target(${psd} base/protocols/dns/main.bro)
|
||||
rest_target(${psd} base/protocols/ftp/file-analysis.bro)
|
||||
rest_target(${psd} base/protocols/ftp/file-extract.bro)
|
||||
rest_target(${psd} base/protocols/ftp/gridftp.bro)
|
||||
rest_target(${psd} base/protocols/ftp/main.bro)
|
||||
rest_target(${psd} base/protocols/ftp/utils-commands.bro)
|
||||
rest_target(${psd} base/protocols/http/file-analysis.bro)
|
||||
rest_target(${psd} base/protocols/http/file-extract.bro)
|
||||
rest_target(${psd} base/protocols/http/file-hash.bro)
|
||||
rest_target(${psd} base/protocols/http/file-ident.bro)
|
||||
rest_target(${psd} base/protocols/http/main.bro)
|
||||
rest_target(${psd} base/protocols/http/utils.bro)
|
||||
rest_target(${psd} base/protocols/irc/dcc-send.bro)
|
||||
rest_target(${psd} base/protocols/irc/file-analysis.bro)
|
||||
rest_target(${psd} base/protocols/irc/main.bro)
|
||||
rest_target(${psd} base/protocols/modbus/consts.bro)
|
||||
rest_target(${psd} base/protocols/modbus/main.bro)
|
||||
rest_target(${psd} base/protocols/smtp/entities-excerpt.bro)
|
||||
rest_target(${psd} base/protocols/smtp/entities.bro)
|
||||
rest_target(${psd} base/protocols/smtp/file-analysis.bro)
|
||||
rest_target(${psd} base/protocols/smtp/main.bro)
|
||||
rest_target(${psd} base/protocols/socks/consts.bro)
|
||||
rest_target(${psd} base/protocols/socks/main.bro)
|
||||
|
|
|
@ -254,7 +254,7 @@ Variable Naming
|
|||
|
||||
- Identifiers may have been renamed to conform to new `scripting
|
||||
conventions
|
||||
<http://www.bro-ids.org/development/script-conventions.html>`_
|
||||
<http://www.bro.org/development/script-conventions.html>`_
|
||||
|
||||
|
||||
BroControl
|
||||
|
@ -296,7 +296,7 @@ Development Infrastructure
|
|||
Bro development has moved from using SVN to Git for revision control.
|
||||
Users that want to use the latest Bro development snapshot by checking it out
|
||||
from the source repositories should see the `development process
|
||||
<http://www.bro-ids.org/development/process.html>`_. Note that all the various
|
||||
<http://www.bro.org/development/process.html>`_. Note that all the various
|
||||
sub-components now reside in their own repositories. However, the
|
||||
top-level Bro repository includes them as git submodules so it's easy
|
||||
to check them all out simultaneously.
|
||||
|
|
|
@ -39,7 +39,7 @@ export {
|
|||
## The node type doing all the actual traffic analysis.
|
||||
WORKER,
|
||||
## A node acting as a traffic recorder using the
|
||||
## `Time Machine <http://tracker.bro-ids.org/time-machine>`_ software.
|
||||
## `Time Machine <http://tracker.bro.org/time-machine>`_ software.
|
||||
TIME_MACHINE,
|
||||
};
|
||||
|
||||
|
|
|
@ -18,23 +18,20 @@ export {
|
|||
const default_reassembly_buffer_size: count = 1024*1024 &redef;
|
||||
|
||||
## The default buffer size used for storing the beginning of files.
|
||||
# TODO: what's a reasonable default?
|
||||
const default_bof_buffer_size: count = 256 &redef;
|
||||
const default_bof_buffer_size: count = 1024 &redef;
|
||||
|
||||
## The default amount of time file analysis will wait for new file data
|
||||
## before giving up.
|
||||
## TODO: what's a reasonable default?
|
||||
#const default_timeout_interval: interval = 2 mins &redef;
|
||||
const default_timeout_interval: interval = 10 sec &redef;
|
||||
const default_timeout_interval: interval = 2 mins &redef;
|
||||
|
||||
## The default amount of data that a user is allowed to extract
|
||||
## from a file to an event with the
|
||||
## :bro:see:`FileAnalysis::ACTION_DATA_EVENT` action.
|
||||
## TODO: what's a reasonable default?
|
||||
const default_data_event_len: count = 1024*1024 &redef;
|
||||
# Needed a forward declaration for event parameters...
|
||||
type Info: record {};
|
||||
|
||||
type ActionArgs: record {
|
||||
act: Action;
|
||||
extract_filename: string &optional;
|
||||
chunk_event: event(info: Info, data: string, off: count) &optional;
|
||||
stream_event: event(info: Info, data: string) &optional;
|
||||
};
|
||||
|
||||
type ActionResults: record {
|
||||
|
@ -52,15 +49,16 @@ export {
|
|||
## from a container file as part of the analysis.
|
||||
parent_file_id: string &log &optional;
|
||||
|
||||
## The network protocol over which the file was transferred.
|
||||
protocol: string &log &optional;
|
||||
## An identification of the source of the file data. E.g. it may be
|
||||
## a network protocol over which it was transferred, or a local file
|
||||
## path which was read, or some other input source.
|
||||
source: string &log &optional;
|
||||
|
||||
## The set of connections over which the file was transferred,
|
||||
## indicated by UID strings.
|
||||
conn_uids: set[string] &log &optional;
|
||||
## The set of connections over which the file was transferred,
|
||||
## indicated by 5-tuples.
|
||||
conn_ids: set[conn_id] &optional;
|
||||
## The set of connections over which the file was transferred.
|
||||
conns: table[conn_id] of connection &optional;
|
||||
|
||||
## The time at which the last activity for the file was seen.
|
||||
last_active: time &log;
|
||||
|
||||
## Number of bytes provided to the file analysis engine for the file.
|
||||
seen_bytes: count &log &default=0;
|
||||
|
@ -82,18 +80,100 @@ export {
|
|||
## the analysis engine will wait before giving up on it.
|
||||
timeout_interval: interval &log &default=default_timeout_interval;
|
||||
|
||||
## The number of bytes at the beginning of a file to save for later
|
||||
## inspection in *bof_buffer* field of
|
||||
## :bro:see:`FileAnalysis::ActionResults`.
|
||||
bof_buffer_size: count &log &default=default_bof_buffer_size;
|
||||
|
||||
## The content of the beginning of a file up to *bof_buffer_size* bytes.
|
||||
## This is also the buffer that's used for file/mime type detection.
|
||||
bof_buffer: string &optional;
|
||||
|
||||
## An initial guess at file type.
|
||||
file_type: string &log &optional;
|
||||
## An initial guess at mime type.
|
||||
mime_type: string &log &optional;
|
||||
|
||||
## Actions that have been added to the analysis of this file.
|
||||
actions: vector of Action &default=vector();
|
||||
|
||||
## The corresponding arguments supplied to each element of *actions*.
|
||||
action_args: vector of ActionArgs &default=vector();
|
||||
|
||||
## Some actions may directly yield results in this record.
|
||||
action_results: ActionResults;
|
||||
## Not meant to be modified directly by scripts.
|
||||
actions: table[ActionArgs] of ActionResults;
|
||||
} &redef;
|
||||
|
||||
## TODO: document
|
||||
global policy: hook(trig: Trigger, info: Info);
|
||||
|
||||
const disable: table[AnalyzerTag] of bool = table() &redef;
|
||||
|
||||
# TODO: wrapper functions for BiFs ?
|
||||
|
||||
## Event that can be handled to access the Info record as it is sent on
|
||||
## to the logging framework.
|
||||
global log_file_analysis: event(rec: Info);
|
||||
|
||||
## The salt concatenated to unique file handle strings generated by
|
||||
## :bro:see:`FileAnalysis::handle_callbacks` before hashing them
|
||||
## in to a file id (the *file_id* field of :bro:see:`FileAnalysis::Info`).
|
||||
## Provided to help mitigate the possiblility of manipulating parts of
|
||||
## network connections that factor in to the file handle in order to
|
||||
## generate two handles that would hash to the same file id.
|
||||
const salt = "I recommend changing this." &redef;
|
||||
}
|
||||
|
||||
event bro_init() &priority=5
|
||||
{
|
||||
Log::create_stream(FileAnalysis::LOG,
|
||||
[$columns=Info, $ev=log_file_analysis]);
|
||||
}
|
||||
|
||||
redef record FileAnalysis::Info += {
|
||||
conn_uids: set[string] &log &optional;
|
||||
actions_taken: set[Action] &log &optional;
|
||||
extracted_files: set[string] &log &optional;
|
||||
md5: string &log &optional;
|
||||
sha1: string &log &optional;
|
||||
sha256: string &log &optional;
|
||||
};
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=-10
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_EOF &&
|
||||
trig != FileAnalysis::TRIGGER_DONE ) return;
|
||||
|
||||
info$conn_uids = set();
|
||||
if ( info?$conns )
|
||||
for ( cid in info$conns )
|
||||
add info$conn_uids[info$conns[cid]$uid];
|
||||
|
||||
info$actions_taken = set();
|
||||
info$extracted_files = set();
|
||||
|
||||
for ( act in info$actions )
|
||||
{
|
||||
add info$actions_taken[act$act];
|
||||
local result: FileAnalysis::ActionResults = info$actions[act];
|
||||
|
||||
switch ( act$act ) {
|
||||
case FileAnalysis::ACTION_EXTRACT:
|
||||
add info$extracted_files[act$extract_filename];
|
||||
break;
|
||||
case FileAnalysis::ACTION_MD5:
|
||||
if ( result?$md5 )
|
||||
info$md5 = result$md5;
|
||||
break;
|
||||
case FileAnalysis::ACTION_SHA1:
|
||||
if ( result?$sha1 )
|
||||
info$sha1 = result$sha1;
|
||||
break;
|
||||
case FileAnalysis::ACTION_SHA256:
|
||||
if ( result?$sha256 )
|
||||
info$sha256 = result$sha256;
|
||||
break;
|
||||
case FileAnalysis::ACTION_DATA_EVENT:
|
||||
# no direct result
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
Log::write(FileAnalysis::LOG, info);
|
||||
}
|
||||
|
|
|
@ -2,4 +2,5 @@
|
|||
@load ./readers/ascii
|
||||
@load ./readers/raw
|
||||
@load ./readers/benchmark
|
||||
@load ./readers/binary
|
||||
|
||||
|
|
8
scripts/base/frameworks/input/readers/binary.bro
Normal file
8
scripts/base/frameworks/input/readers/binary.bro
Normal file
|
@ -0,0 +1,8 @@
|
|||
##! Interface for the binary input reader.
|
||||
|
||||
module InputBinary;
|
||||
|
||||
export {
|
||||
## Size of data chunks to read from the input file at a time.
|
||||
const chunk_size = 1024 &redef;
|
||||
}
|
|
@ -17,6 +17,8 @@
|
|||
|
||||
@if ( Cluster::is_enabled() )
|
||||
@load ./cluster
|
||||
@else
|
||||
@load ./non-cluster
|
||||
@endif
|
||||
|
||||
# Load here so that it can check whether clustering is enabled.
|
||||
|
|
|
@ -27,18 +27,17 @@ export {
|
|||
## Notice types which should have the "remote" location looked up.
|
||||
## If GeoIP support is not built in, this does nothing.
|
||||
const lookup_location_types: set[Notice::Type] = {} &redef;
|
||||
|
||||
## Add a helper to the notice policy for looking up GeoIP data.
|
||||
redef Notice::policy += {
|
||||
[$pred(n: Notice::Info) = { return (n$note in Notice::lookup_location_types); },
|
||||
$action = ACTION_ADD_GEODATA,
|
||||
$priority = 10],
|
||||
};
|
||||
}
|
||||
|
||||
hook policy(n: Notice::Info) &priority=10
|
||||
{
|
||||
if ( n$note in Notice::lookup_location_types )
|
||||
add n$actions[ACTION_ADD_GEODATA];
|
||||
}
|
||||
|
||||
# This is handled at a high priority in case other notice handlers
|
||||
# want to use the data.
|
||||
event notice(n: Notice::Info) &priority=10
|
||||
hook notice(n: Notice::Info) &priority=10
|
||||
{
|
||||
if ( ACTION_ADD_GEODATA in n$actions &&
|
||||
|Site::local_nets| > 0 &&
|
||||
|
|
|
@ -17,20 +17,13 @@ export {
|
|||
};
|
||||
}
|
||||
|
||||
# This is a little awkward because we want to inject drop along with the
|
||||
# synchronous functions.
|
||||
event bro_init()
|
||||
hook notice(n: Notice::Info)
|
||||
{
|
||||
local drop_func = function(n: Notice::Info)
|
||||
if ( ACTION_DROP in n$actions )
|
||||
{
|
||||
if ( ACTION_DROP in n$actions )
|
||||
{
|
||||
#local drop = React::drop_address(n$src, "");
|
||||
#local addl = drop?$sub ? fmt(" %s", drop$sub) : "";
|
||||
#n$dropped = drop$note != Drop::AddressDropIgnored;
|
||||
#n$msg += fmt(" [%s%s]", drop$note, addl);
|
||||
}
|
||||
};
|
||||
|
||||
add Notice::sync_functions[drop_func];
|
||||
#local drop = React::drop_address(n$src, "");
|
||||
#local addl = drop?$sub ? fmt(" %s", drop$sub) : "";
|
||||
#n$dropped = drop$note != Drop::AddressDropIgnored;
|
||||
#n$msg += fmt(" [%s%s]", drop$note, addl);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -18,7 +18,7 @@ export {
|
|||
};
|
||||
}
|
||||
|
||||
event notice(n: Notice::Info) &priority=-5
|
||||
hook notice(n: Notice::Info) &priority=-5
|
||||
{
|
||||
if ( |Site::local_admins| > 0 &&
|
||||
ACTION_EMAIL_ADMIN in n$actions )
|
||||
|
|
|
@ -15,7 +15,7 @@ export {
|
|||
const mail_page_dest = "" &redef;
|
||||
}
|
||||
|
||||
event notice(n: Notice::Info) &priority=-5
|
||||
hook notice(n: Notice::Info) &priority=-5
|
||||
{
|
||||
if ( ACTION_PAGE in n$actions )
|
||||
email_notice_to(n, mail_page_dest, F);
|
||||
|
|
|
@ -105,7 +105,7 @@ event bro_init()
|
|||
$postprocessor=pp_postprocessor]);
|
||||
}
|
||||
|
||||
event notice(n: Notice::Info) &priority=-5
|
||||
hook notice(n: Notice::Info) &priority=-5
|
||||
{
|
||||
if ( ! want_pp() )
|
||||
return;
|
||||
|
|
|
@ -21,30 +21,10 @@ redef Cluster::manager2worker_events += /Notice::begin_suppression/;
|
|||
redef Cluster::worker2manager_events += /Notice::cluster_notice/;
|
||||
|
||||
@if ( Cluster::local_node_type() != Cluster::MANAGER )
|
||||
|
||||
# The notice policy is completely handled by the manager and shouldn't be
|
||||
# done by workers or proxies to save time for packet processing.
|
||||
redef Notice::policy = table();
|
||||
|
||||
event Notice::begin_suppression(n: Notice::Info)
|
||||
{
|
||||
suppressing[n$note, n$identifier] = n;
|
||||
}
|
||||
|
||||
event Notice::notice(n: Notice::Info)
|
||||
{
|
||||
# Send the locally generated notice on to the manager.
|
||||
event Notice::cluster_notice(n);
|
||||
}
|
||||
|
||||
event bro_init() &priority=-3
|
||||
{
|
||||
# Workers and proxies need to disable the notice streams because notice
|
||||
# events are forwarded directly instead of being logged remotely.
|
||||
Log::disable_stream(Notice::LOG);
|
||||
Log::disable_stream(Notice::POLICY_LOG);
|
||||
Log::disable_stream(Notice::ALARM_LOG);
|
||||
}
|
||||
@endif
|
||||
|
||||
@if ( Cluster::local_node_type() == Cluster::MANAGER )
|
||||
|
@ -54,3 +34,19 @@ event Notice::cluster_notice(n: Notice::Info)
|
|||
NOTICE(n);
|
||||
}
|
||||
@endif
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
## This is the entry point in the global namespace for the notice framework.
|
||||
function NOTICE(n: Notice::Info)
|
||||
{
|
||||
# Suppress this notice if necessary.
|
||||
if ( Notice::is_being_suppressed(n) )
|
||||
return;
|
||||
|
||||
if ( Cluster::local_node_type() == Cluster::MANAGER )
|
||||
Notice::internal_NOTICE(n);
|
||||
else
|
||||
# For non-managers, send the notice on to the manager.
|
||||
event Notice::cluster_notice(n);
|
||||
}
|
||||
|
|
|
@ -13,7 +13,7 @@ module Notice;
|
|||
# reference to the original notice)
|
||||
global tmp_notice_storage: table[string] of Notice::Info &create_expire=max_email_delay+10secs;
|
||||
|
||||
event Notice::notice(n: Notice::Info) &priority=10
|
||||
hook notice(n: Notice::Info) &priority=10
|
||||
{
|
||||
if ( ! n?$src && ! n?$dst )
|
||||
return;
|
||||
|
|
|
@ -10,9 +10,6 @@ export {
|
|||
redef enum Log::ID += {
|
||||
## This is the primary logging stream for notices.
|
||||
LOG,
|
||||
## This is the notice policy auditing log. It records what the current
|
||||
## notice policy is at Bro init time.
|
||||
POLICY_LOG,
|
||||
## This is the alarm stream.
|
||||
ALARM_LOG,
|
||||
};
|
||||
|
@ -42,9 +39,6 @@ export {
|
|||
## version of the alarm log is emailed in bulk to the address(es)
|
||||
## configured in :bro:id:`Notice::mail_dest`.
|
||||
ACTION_ALARM,
|
||||
## Indicates that the notice should not be supressed by the normal
|
||||
## duplicate notice suppression that the notice framework does.
|
||||
ACTION_NO_SUPPRESS,
|
||||
};
|
||||
|
||||
## The notice framework is able to do automatic notice supression by
|
||||
|
@ -102,10 +96,6 @@ export {
|
|||
## The actions which have been applied to this notice.
|
||||
actions: set[Notice::Action] &log &optional;
|
||||
|
||||
## These are policy items that returned T and applied their action
|
||||
## to the notice.
|
||||
policy_items: set[count] &log &optional;
|
||||
|
||||
## By adding chunks of text into this element, other scripts can
|
||||
## expand on notices that are being emailed. The normal way to add text
|
||||
## is to extend the vector by handling the :bro:id:`Notice::notice`
|
||||
|
@ -142,9 +132,8 @@ export {
|
|||
identifier: string &optional;
|
||||
|
||||
## This field indicates the length of time that this
|
||||
## unique notice should be suppressed. This field is automatically
|
||||
## filled out and should not be written to by any other script.
|
||||
suppress_for: interval &log &optional;
|
||||
## unique notice should be suppressed.
|
||||
suppress_for: interval &log &default=default_suppression_interval;
|
||||
};
|
||||
|
||||
## Ignored notice types.
|
||||
|
@ -159,58 +148,8 @@ export {
|
|||
## intervals for entire notice types.
|
||||
const type_suppression_intervals: table[Notice::Type] of interval = {} &redef;
|
||||
|
||||
## This is the record that defines the items that make up the notice policy.
|
||||
type PolicyItem: record {
|
||||
## This is the exact positional order in which the
|
||||
## :bro:type:`Notice::PolicyItem` records are checked.
|
||||
## This is set internally by the notice framework.
|
||||
position: count &log &optional;
|
||||
## Define the priority for this check. Items are checked in ordered
|
||||
## from highest value (10) to lowest value (0).
|
||||
priority: count &log &default=5;
|
||||
## An action given to the notice if the predicate return true.
|
||||
action: Notice::Action &log &default=ACTION_NONE;
|
||||
## The pred (predicate) field is a function that returns a boolean T
|
||||
## or F value. If the predicate function return true, the action in
|
||||
## this record is applied to the notice that is given as an argument
|
||||
## to the predicate function. If no predicate is supplied, it's
|
||||
## assumed that the PolicyItem always applies.
|
||||
pred: function(n: Notice::Info): bool &log &optional;
|
||||
## Indicates this item should terminate policy processing if the
|
||||
## predicate returns T.
|
||||
halt: bool &log &default=F;
|
||||
## This defines the length of time that this particular notice should
|
||||
## be supressed.
|
||||
suppress_for: interval &log &optional;
|
||||
};
|
||||
|
||||
## Defines a notice policy that is extensible on a per-site basis.
|
||||
## All notice processing is done through this variable.
|
||||
const policy: set[PolicyItem] = {
|
||||
[$pred(n: Notice::Info) = { return (n$note in Notice::ignored_types); },
|
||||
$halt=T, $priority = 9],
|
||||
[$pred(n: Notice::Info) = { return (n$note in Notice::not_suppressed_types); },
|
||||
$action = ACTION_NO_SUPPRESS,
|
||||
$priority = 9],
|
||||
[$pred(n: Notice::Info) = { return (n$note in Notice::alarmed_types); },
|
||||
$action = ACTION_ALARM,
|
||||
$priority = 8],
|
||||
[$pred(n: Notice::Info) = { return (n$note in Notice::emailed_types); },
|
||||
$action = ACTION_EMAIL,
|
||||
$priority = 8],
|
||||
[$pred(n: Notice::Info) = {
|
||||
if (n$note in Notice::type_suppression_intervals)
|
||||
{
|
||||
n$suppress_for=Notice::type_suppression_intervals[n$note];
|
||||
return T;
|
||||
}
|
||||
return F;
|
||||
},
|
||||
$action = ACTION_NONE,
|
||||
$priority = 8],
|
||||
[$action = ACTION_LOG,
|
||||
$priority = 0],
|
||||
} &redef;
|
||||
## The hook to modify notice handling.
|
||||
global policy: hook(n: Notice::Info);
|
||||
|
||||
## Local system sendmail program.
|
||||
const sendmail = "/usr/sbin/sendmail" &redef;
|
||||
|
@ -240,25 +179,11 @@ export {
|
|||
## This is the event that is called as the entry point to the
|
||||
## notice framework by the global :bro:id:`NOTICE` function. By the time
|
||||
## this event is generated, default values have already been filled out in
|
||||
## the :bro:type:`Notice::Info` record and synchronous functions in the
|
||||
## :bro:id:`Notice::sync_functions` have already been called. The notice
|
||||
## the :bro:type:`Notice::Info` record and the notice
|
||||
## policy has also been applied.
|
||||
##
|
||||
## n: The record containing notice data.
|
||||
global notice: event(n: Info);
|
||||
|
||||
## This is a set of functions that provide a synchronous way for scripts
|
||||
## extending the notice framework to run before the normal event based
|
||||
## notice pathway that most of the notice framework takes. This is helpful
|
||||
## in cases where an action against a notice needs to happen immediately
|
||||
## and can't wait the short time for the event to bubble up to the top of
|
||||
## the event queue. An example is the IP address dropping script that
|
||||
## can block IP addresses that have notices generated because it
|
||||
## needs to operate closer to real time than the event queue allows it to.
|
||||
## Normally the event based extension model using the
|
||||
## :bro:id:`Notice::notice` event will work fine if there aren't harder
|
||||
## real time constraints.
|
||||
const sync_functions: set[function(n: Notice::Info)] = set() &redef;
|
||||
global notice: hook(n: Info);
|
||||
|
||||
## This event is generated when a notice begins to be suppressed.
|
||||
##
|
||||
|
@ -266,6 +191,11 @@ export {
|
|||
## about to be suppressed.
|
||||
global begin_suppression: event(n: Notice::Info);
|
||||
|
||||
## A function to determine if an event is supposed to be suppressed.
|
||||
##
|
||||
## n: The record containing the notice in question.
|
||||
global is_being_suppressed: function(n: Notice::Info): bool;
|
||||
|
||||
## This event is generated on each occurence of an event being suppressed.
|
||||
##
|
||||
## n: The record containing notice data regarding the notice type
|
||||
|
@ -338,10 +268,6 @@ global suppressing: table[Type, string] of Notice::Info = {}
|
|||
&create_expire=0secs
|
||||
&expire_func=per_notice_suppression_interval;
|
||||
|
||||
# This is an internal variable used to store the notice policy ordered by
|
||||
# priority.
|
||||
global ordered_policy: vector of PolicyItem = vector();
|
||||
|
||||
function log_mailing_postprocessor(info: Log::RotationInfo): bool
|
||||
{
|
||||
if ( ! reading_traces() && mail_dest != "" )
|
||||
|
@ -424,9 +350,7 @@ function email_notice_to(n: Notice::Info, dest: string, extend: bool)
|
|||
}
|
||||
else
|
||||
{
|
||||
event reporter_info(network_time(),
|
||||
fmt("Notice email delay tokens weren't released in time (%s).", n$email_delay_tokens),
|
||||
"");
|
||||
Reporter::info(fmt("Notice email delay tokens weren't released in time (%s).", n$email_delay_tokens));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -468,7 +392,26 @@ function email_notice_to(n: Notice::Info, dest: string, extend: bool)
|
|||
piped_exec(fmt("%s -t -oi", sendmail), email_text);
|
||||
}
|
||||
|
||||
event notice(n: Notice::Info) &priority=-5
|
||||
hook Notice::policy(n: Notice::Info) &priority=10
|
||||
{
|
||||
if ( n$note in Notice::ignored_types )
|
||||
break;
|
||||
|
||||
if ( n$note in Notice::not_suppressed_types )
|
||||
n$suppress_for=0secs;
|
||||
if ( n$note in Notice::alarmed_types )
|
||||
add n$actions[ACTION_ALARM];
|
||||
if ( n$note in Notice::emailed_types )
|
||||
add n$actions[ACTION_EMAIL];
|
||||
|
||||
if ( n$note in Notice::type_suppression_intervals )
|
||||
n$suppress_for=Notice::type_suppression_intervals[n$note];
|
||||
|
||||
# Logging is a default action. It can be removed in a later hook if desired.
|
||||
add n$actions[ACTION_LOG];
|
||||
}
|
||||
|
||||
hook Notice::notice(n: Notice::Info) &priority=-5
|
||||
{
|
||||
if ( ACTION_EMAIL in n$actions )
|
||||
email_notice_to(n, mail_dest, T);
|
||||
|
@ -480,7 +423,6 @@ event notice(n: Notice::Info) &priority=-5
|
|||
# Normally suppress further notices like this one unless directed not to.
|
||||
# n$identifier *must* be specified for suppression to function at all.
|
||||
if ( n?$identifier &&
|
||||
ACTION_NO_SUPPRESS !in n$actions &&
|
||||
[n$note, n$identifier] !in suppressing &&
|
||||
n$suppress_for != 0secs )
|
||||
{
|
||||
|
@ -565,27 +507,8 @@ function apply_policy(n: Notice::Info)
|
|||
if ( ! n?$email_delay_tokens )
|
||||
n$email_delay_tokens = set();
|
||||
|
||||
if ( ! n?$policy_items )
|
||||
n$policy_items = set();
|
||||
|
||||
for ( i in ordered_policy )
|
||||
{
|
||||
# If there's no predicate or the predicate returns F.
|
||||
if ( ! ordered_policy[i]?$pred || ordered_policy[i]$pred(n) )
|
||||
{
|
||||
add n$actions[ordered_policy[i]$action];
|
||||
add n$policy_items[int_to_count(i)];
|
||||
|
||||
# If the predicate matched and there was a suppression interval,
|
||||
# apply it to the notice now.
|
||||
if ( ordered_policy[i]?$suppress_for )
|
||||
n$suppress_for = ordered_policy[i]$suppress_for;
|
||||
|
||||
# If the policy item wants to halt policy processing, do it now!
|
||||
if ( ordered_policy[i]$halt )
|
||||
break;
|
||||
}
|
||||
}
|
||||
# Apply the hook based policy.
|
||||
hook Notice::policy(n);
|
||||
|
||||
# Apply the suppression time after applying the policy so that policy
|
||||
# items can give custom suppression intervals. If there is no
|
||||
|
@ -602,61 +525,15 @@ function apply_policy(n: Notice::Info)
|
|||
delete n$iconn;
|
||||
}
|
||||
|
||||
# Create the ordered notice policy automatically which will be used at runtime
|
||||
# for prioritized matching of the notice policy.
|
||||
event bro_init() &priority=10
|
||||
{
|
||||
# Create the policy log here because it's only written to in this handler.
|
||||
Log::create_stream(Notice::POLICY_LOG, [$columns=PolicyItem]);
|
||||
|
||||
local tmp: table[count] of set[PolicyItem] = table();
|
||||
for ( pi in policy )
|
||||
{
|
||||
if ( pi$priority < 0 || pi$priority > 10 )
|
||||
Reporter::fatal("All Notice::PolicyItem priorities must be within 0 and 10");
|
||||
|
||||
if ( pi$priority !in tmp )
|
||||
tmp[pi$priority] = set();
|
||||
add tmp[pi$priority][pi];
|
||||
}
|
||||
|
||||
local rev_count = vector(10,9,8,7,6,5,4,3,2,1,0);
|
||||
for ( i in rev_count )
|
||||
{
|
||||
local j = rev_count[i];
|
||||
if ( j in tmp )
|
||||
{
|
||||
for ( pi in tmp[j] )
|
||||
{
|
||||
pi$position = |ordered_policy|;
|
||||
ordered_policy[|ordered_policy|] = pi;
|
||||
Log::write(Notice::POLICY_LOG, pi);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function internal_NOTICE(n: Notice::Info)
|
||||
{
|
||||
# Suppress this notice if necessary.
|
||||
if ( is_being_suppressed(n) )
|
||||
return;
|
||||
|
||||
# Fill out fields that might be empty and do the policy processing.
|
||||
apply_policy(n);
|
||||
|
||||
# Run the synchronous functions with the notice.
|
||||
for ( func in sync_functions )
|
||||
func(n);
|
||||
|
||||
# Generate the notice event with the notice.
|
||||
event Notice::notice(n);
|
||||
hook Notice::notice(n);
|
||||
}
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
## This is the entry point in the global namespace for notice framework.
|
||||
function NOTICE(n: Notice::Info)
|
||||
{
|
||||
Notice::internal_NOTICE(n);
|
||||
}
|
||||
global NOTICE: function(n: Notice::Info);
|
||||
|
|
14
scripts/base/frameworks/notice/non-cluster.bro
Normal file
14
scripts/base/frameworks/notice/non-cluster.bro
Normal file
|
@ -0,0 +1,14 @@
|
|||
|
||||
@load ./main
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
## This is the entry point in the global namespace for notice framework.
|
||||
function NOTICE(n: Notice::Info)
|
||||
{
|
||||
# Suppress this notice if necessary.
|
||||
if ( Notice::is_being_suppressed(n) )
|
||||
return;
|
||||
|
||||
Notice::internal_NOTICE(n);
|
||||
}
|
|
@ -161,7 +161,7 @@ event signature_match(state: signature_state, msg: string, data: string)
|
|||
return;
|
||||
|
||||
# Trim the matched data down to something reasonable
|
||||
if ( byte_len(data) > 140 )
|
||||
if ( |data| > 140 )
|
||||
data = fmt("%s...", sub_bytes(data, 0, 140));
|
||||
|
||||
local src_addr: addr;
|
||||
|
@ -259,8 +259,8 @@ event signature_match(state: signature_state, msg: string, data: string)
|
|||
|
||||
add vert_table[orig, resp][sig_id];
|
||||
|
||||
local hcount = length(horiz_table[orig, sig_id]);
|
||||
local vcount = length(vert_table[orig, resp]);
|
||||
local hcount = |horiz_table[orig, sig_id]|;
|
||||
local vcount = |vert_table[orig, resp]|;
|
||||
|
||||
if ( hcount in horiz_scan_thresholds && hcount != last_hthresh[orig] )
|
||||
{
|
||||
|
|
|
@ -29,6 +29,8 @@ export {
|
|||
minor: count &optional;
|
||||
## Minor subversion number
|
||||
minor2: count &optional;
|
||||
## Minor updates number
|
||||
minor3: count &optional;
|
||||
## Additional version string (e.g. "beta42")
|
||||
addl: string &optional;
|
||||
} &log;
|
||||
|
@ -146,10 +148,10 @@ function parse(unparsed_version: string): Description
|
|||
if ( /^[\/\-\._v\(]/ in sv )
|
||||
sv = strip(sub(version_parts[2], /^\(?[\/\-\._v\(]/, ""));
|
||||
local version_numbers = split_n(sv, /[\-\._,\[\(\{ ]/, F, 3);
|
||||
if ( 4 in version_numbers && version_numbers[4] != "" )
|
||||
v$addl = strip(version_numbers[4]);
|
||||
if ( 5 in version_numbers && version_numbers[5] != "" )
|
||||
v$addl = strip(version_numbers[5]);
|
||||
else if ( 3 in version_parts && version_parts[3] != "" &&
|
||||
version_parts[3] != ")" )
|
||||
version_parts[3] != ")" )
|
||||
{
|
||||
if ( /^[[:blank:]]*\([a-zA-Z0-9\-\._[:blank:]]*\)/ in version_parts[3] )
|
||||
{
|
||||
|
@ -178,6 +180,8 @@ function parse(unparsed_version: string): Description
|
|||
}
|
||||
}
|
||||
|
||||
if ( 4 in version_numbers && version_numbers[4] != "" )
|
||||
v$minor3 = extract_count(version_numbers[4]);
|
||||
if ( 3 in version_numbers && version_numbers[3] != "" )
|
||||
v$minor2 = extract_count(version_numbers[3]);
|
||||
if ( 2 in version_numbers && version_numbers[2] != "" )
|
||||
|
@ -332,8 +336,25 @@ function cmp_versions(v1: Version, v2: Version): int
|
|||
return v1?$minor2 ? 1 : -1;
|
||||
}
|
||||
|
||||
if ( v1?$minor3 && v2?$minor3 )
|
||||
{
|
||||
if ( v1$minor3 < v2$minor3 )
|
||||
return -1;
|
||||
if ( v1$minor3 > v2$minor3 )
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
if ( !v1?$minor3 && !v2?$minor3 )
|
||||
{ }
|
||||
else
|
||||
return v1?$minor3 ? 1 : -1;
|
||||
}
|
||||
|
||||
if ( v1?$addl && v2?$addl )
|
||||
{
|
||||
return strcmp(v1$addl, v2$addl);
|
||||
}
|
||||
else
|
||||
{
|
||||
if ( !v1?$addl && !v2?$addl )
|
||||
|
@ -341,6 +362,9 @@ function cmp_versions(v1: Version, v2: Version): int
|
|||
else
|
||||
return v1?$addl ? 1 : -1;
|
||||
}
|
||||
|
||||
# A catcher return that should never be reached...hopefully
|
||||
return 0;
|
||||
}
|
||||
|
||||
function software_endpoint_name(id: conn_id, host: addr): string
|
||||
|
@ -351,10 +375,11 @@ function software_endpoint_name(id: conn_id, host: addr): string
|
|||
# Convert a version into a string "a.b.c-x".
|
||||
function software_fmt_version(v: Version): string
|
||||
{
|
||||
return fmt("%d.%d.%d%s",
|
||||
v?$major ? v$major : 0,
|
||||
v?$minor ? v$minor : 0,
|
||||
v?$minor2 ? v$minor2 : 0,
|
||||
return fmt("%s%s%s%s%s",
|
||||
v?$major ? fmt("%d", v$major) : "0",
|
||||
v?$minor ? fmt(".%d", v$minor) : "",
|
||||
v?$minor2 ? fmt(".%d", v$minor2) : "",
|
||||
v?$minor3 ? fmt(".%d", v$minor3) : "",
|
||||
v?$addl ? fmt("-%s", v$addl) : "");
|
||||
}
|
||||
|
||||
|
|
|
@ -88,10 +88,10 @@ redef dpd_config += { [ANALYZER_AYIYA] = [$ports = ayiya_ports] };
|
|||
const teredo_ports = { 3544/udp };
|
||||
redef dpd_config += { [ANALYZER_TEREDO] = [$ports = teredo_ports] };
|
||||
|
||||
const gtpv1u_ports = { 2152/udp };
|
||||
redef dpd_config += { [ANALYZER_GTPV1] = [$ports = gtpv1u_ports] };
|
||||
const gtpv1_ports = { 2152/udp, 2123/udp };
|
||||
redef dpd_config += { [ANALYZER_GTPV1] = [$ports = gtpv1_ports] };
|
||||
|
||||
redef likely_server_ports += { ayiya_ports, teredo_ports, gtpv1u_ports };
|
||||
redef likely_server_ports += { ayiya_ports, teredo_ports, gtpv1_ports };
|
||||
|
||||
event bro_init() &priority=5
|
||||
{
|
||||
|
|
|
@ -300,7 +300,7 @@ type connection: record {
|
|||
## one protocol analyzer is able to parse the same data. If so, all will
|
||||
## be recorded. Also note that the recorced services are independent of any
|
||||
## transport-level protocols.
|
||||
service: set[string];
|
||||
service: set[string];
|
||||
addl: string; ##< Deprecated.
|
||||
hot: count; ##< Deprecated.
|
||||
history: string; ##< State history of connections. See *history* in :bro:see:`Conn::Info`.
|
||||
|
@ -1488,6 +1488,146 @@ type gtpv1_hdr: record {
|
|||
next_type: count &optional;
|
||||
};
|
||||
|
||||
type gtp_cause: count;
|
||||
type gtp_imsi: count;
|
||||
type gtp_teardown_ind: bool;
|
||||
type gtp_nsapi: count;
|
||||
type gtp_recovery: count;
|
||||
type gtp_teid1: count;
|
||||
type gtp_teid_control_plane: count;
|
||||
type gtp_charging_id: count;
|
||||
type gtp_charging_gateway_addr: addr;
|
||||
type gtp_trace_reference: count;
|
||||
type gtp_trace_type: count;
|
||||
type gtp_tft: string;
|
||||
type gtp_trigger_id: string;
|
||||
type gtp_omc_id: string;
|
||||
type gtp_reordering_required: bool;
|
||||
type gtp_proto_config_options: string;
|
||||
type gtp_charging_characteristics: count;
|
||||
type gtp_selection_mode: count;
|
||||
type gtp_access_point_name: string;
|
||||
type gtp_msisdn: string;
|
||||
|
||||
type gtp_gsn_addr: record {
|
||||
## If the GSN Address information element has length 4 or 16, then this
|
||||
## field is set to be the informational element's value interpreted as
|
||||
## an IPv4 or IPv6 address, respectively.
|
||||
ip: addr &optional;
|
||||
## This field is set if it's not an IPv4 or IPv6 address.
|
||||
other: string &optional;
|
||||
};
|
||||
|
||||
type gtp_end_user_addr: record {
|
||||
pdp_type_org: count;
|
||||
pdp_type_num: count;
|
||||
## Set if the End User Address information element is IPv4/IPv6.
|
||||
pdp_ip: addr &optional;
|
||||
## Set if the End User Address information element isn't IPv4/IPv6.
|
||||
pdp_other_addr: string &optional;
|
||||
};
|
||||
|
||||
type gtp_rai: record {
|
||||
mcc: count;
|
||||
mnc: count;
|
||||
lac: count;
|
||||
rac: count;
|
||||
};
|
||||
|
||||
type gtp_qos_profile: record {
|
||||
priority: count;
|
||||
data: string;
|
||||
};
|
||||
|
||||
type gtp_private_extension: record {
|
||||
id: count;
|
||||
value: string;
|
||||
};
|
||||
|
||||
type gtp_create_pdp_ctx_request_elements: record {
|
||||
imsi: gtp_imsi &optional;
|
||||
rai: gtp_rai &optional;
|
||||
recovery: gtp_recovery &optional;
|
||||
select_mode: gtp_selection_mode &optional;
|
||||
data1: gtp_teid1;
|
||||
cp: gtp_teid_control_plane &optional;
|
||||
nsapi: gtp_nsapi;
|
||||
linked_nsapi: gtp_nsapi &optional;
|
||||
charge_character: gtp_charging_characteristics &optional;
|
||||
trace_ref: gtp_trace_reference &optional;
|
||||
trace_type: gtp_trace_type &optional;
|
||||
end_user_addr: gtp_end_user_addr &optional;
|
||||
ap_name: gtp_access_point_name &optional;
|
||||
opts: gtp_proto_config_options &optional;
|
||||
signal_addr: gtp_gsn_addr;
|
||||
user_addr: gtp_gsn_addr;
|
||||
msisdn: gtp_msisdn &optional;
|
||||
qos_prof: gtp_qos_profile;
|
||||
tft: gtp_tft &optional;
|
||||
trigger_id: gtp_trigger_id &optional;
|
||||
omc_id: gtp_omc_id &optional;
|
||||
ext: gtp_private_extension &optional;
|
||||
};
|
||||
|
||||
type gtp_create_pdp_ctx_response_elements: record {
|
||||
cause: gtp_cause;
|
||||
reorder_req: gtp_reordering_required &optional;
|
||||
recovery: gtp_recovery &optional;
|
||||
data1: gtp_teid1 &optional;
|
||||
cp: gtp_teid_control_plane &optional;
|
||||
charging_id: gtp_charging_id &optional;
|
||||
end_user_addr: gtp_end_user_addr &optional;
|
||||
opts: gtp_proto_config_options &optional;
|
||||
cp_addr: gtp_gsn_addr &optional;
|
||||
user_addr: gtp_gsn_addr &optional;
|
||||
qos_prof: gtp_qos_profile &optional;
|
||||
charge_gateway: gtp_charging_gateway_addr &optional;
|
||||
ext: gtp_private_extension &optional;
|
||||
};
|
||||
|
||||
type gtp_update_pdp_ctx_request_elements: record {
|
||||
imsi: gtp_imsi &optional;
|
||||
rai: gtp_rai &optional;
|
||||
recovery: gtp_recovery &optional;
|
||||
data1: gtp_teid1;
|
||||
cp: gtp_teid_control_plane &optional;
|
||||
nsapi: gtp_nsapi;
|
||||
trace_ref: gtp_trace_reference &optional;
|
||||
trace_type: gtp_trace_type &optional;
|
||||
cp_addr: gtp_gsn_addr;
|
||||
user_addr: gtp_gsn_addr;
|
||||
qos_prof: gtp_qos_profile;
|
||||
tft: gtp_tft &optional;
|
||||
trigger_id: gtp_trigger_id &optional;
|
||||
omc_id: gtp_omc_id &optional;
|
||||
ext: gtp_private_extension &optional;
|
||||
end_user_addr: gtp_end_user_addr &optional;
|
||||
};
|
||||
|
||||
type gtp_update_pdp_ctx_response_elements: record {
|
||||
cause: gtp_cause;
|
||||
recovery: gtp_recovery &optional;
|
||||
data1: gtp_teid1 &optional;
|
||||
cp: gtp_teid_control_plane &optional;
|
||||
charging_id: gtp_charging_id &optional;
|
||||
cp_addr: gtp_gsn_addr &optional;
|
||||
user_addr: gtp_gsn_addr &optional;
|
||||
qos_prof: gtp_qos_profile &optional;
|
||||
charge_gateway: gtp_charging_gateway_addr &optional;
|
||||
ext: gtp_private_extension &optional;
|
||||
};
|
||||
|
||||
type gtp_delete_pdp_ctx_request_elements: record {
|
||||
teardown_ind: gtp_teardown_ind &optional;
|
||||
nsapi: gtp_nsapi;
|
||||
ext: gtp_private_extension &optional;
|
||||
};
|
||||
|
||||
type gtp_delete_pdp_ctx_response_elements: record {
|
||||
cause: gtp_cause;
|
||||
ext: gtp_private_extension &optional;
|
||||
};
|
||||
|
||||
## Definition of "secondary filters". A secondary filter is a BPF filter given as
|
||||
## index in this table. For each such filter, the corresponding event is raised for
|
||||
## all matching packets.
|
||||
|
|
|
@ -1,4 +1,5 @@
|
|||
@load ./utils-commands
|
||||
@load ./main
|
||||
@load ./file-analysis
|
||||
@load ./file-extract
|
||||
@load ./gridftp
|
||||
|
|
50
scripts/base/protocols/ftp/file-analysis.bro
Normal file
50
scripts/base/protocols/ftp/file-analysis.bro
Normal file
|
@ -0,0 +1,50 @@
|
|||
@load ./main
|
||||
@load base/utils/conn-ids
|
||||
@load base/frameworks/file-analysis/main
|
||||
|
||||
module FTP;
|
||||
|
||||
export {
|
||||
## Determines whether the default :bro:see:`get_file_handle` handler
|
||||
## is used to return file handles to the file analysis framework.
|
||||
## Redefine to true in order to provide a custom handler which overrides
|
||||
## the default for FTP.
|
||||
const disable_default_file_handle_provider: bool = F &redef;
|
||||
|
||||
## Default file handle provider for FTP.
|
||||
function get_file_handle(c: connection, is_orig: bool): string
|
||||
{
|
||||
if ( [c$id$resp_h, c$id$resp_p] !in ftp_data_expected ) return "";
|
||||
|
||||
local info: FTP::Info = ftp_data_expected[c$id$resp_h, c$id$resp_p];
|
||||
|
||||
local rval = fmt("%s %s %s", ANALYZER_FTP_DATA, c$start_time,
|
||||
id_string(c$id));
|
||||
|
||||
if ( info$passive )
|
||||
# FTP client initiates data channel.
|
||||
if ( is_orig )
|
||||
# Don't care about FTP client data.
|
||||
return "";
|
||||
else
|
||||
# Do care about FTP server data.
|
||||
return rval;
|
||||
else
|
||||
# FTP server initiates dta channel.
|
||||
if ( is_orig )
|
||||
# Do care about FTP server data.
|
||||
return rval;
|
||||
else
|
||||
# Don't care about FTP client data.
|
||||
return "";
|
||||
}
|
||||
}
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
event get_file_handle(tag: AnalyzerTag, c: connection, is_orig: bool)
|
||||
{
|
||||
if ( tag != ANALYZER_FTP_DATA ) return;
|
||||
if ( FTP::disable_default_file_handle_provider ) return;
|
||||
return_file_handle(FTP::get_file_handle(c, is_orig));
|
||||
}
|
|
@ -13,54 +13,96 @@ export {
|
|||
const extraction_prefix = "ftp-item" &redef;
|
||||
}
|
||||
|
||||
global extract_count: count = 0;
|
||||
|
||||
redef record Info += {
|
||||
## On disk file where it was extracted to.
|
||||
extraction_file: file &log &optional;
|
||||
extraction_file: string &log &optional;
|
||||
|
||||
## Indicates if the current command/response pair should attempt to
|
||||
## extract the file if a file was transferred.
|
||||
extract_file: bool &default=F;
|
||||
|
||||
## Internal tracking of the total number of files extracted during this
|
||||
## session.
|
||||
num_extracted_files: count &default=0;
|
||||
};
|
||||
|
||||
event file_transferred(c: connection, prefix: string, descr: string,
|
||||
mime_type: string) &priority=3
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
local id = c$id;
|
||||
if ( [id$resp_h, id$resp_p] !in ftp_data_expected )
|
||||
return;
|
||||
if ( trig != FileAnalysis::TRIGGER_NEW ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "FTP_DATA" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
local s = ftp_data_expected[id$resp_h, id$resp_p];
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
local extracting: bool = F;
|
||||
|
||||
if ( extract_file_types in s$mime_type )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
s$extract_file = T;
|
||||
++s$num_extracted_files;
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( [cid$resp_h, cid$resp_p] !in ftp_data_expected ) next;
|
||||
|
||||
local s = ftp_data_expected[cid$resp_h, cid$resp_p];
|
||||
|
||||
if ( ! s$extract_file ) next;
|
||||
|
||||
if ( ! extracting )
|
||||
{
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
extracting = T;
|
||||
++extract_count;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
event file_transferred(c: connection, prefix: string, descr: string,
|
||||
mime_type: string) &priority=-4
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
local id = c$id;
|
||||
if ( [id$resp_h, id$resp_p] !in ftp_data_expected )
|
||||
return;
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$mime_type ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "FTP_DATA" ) return;
|
||||
if ( extract_file_types !in info$mime_type ) return;
|
||||
|
||||
local s = ftp_data_expected[id$resp_h, id$resp_p];
|
||||
for ( act in info$actions )
|
||||
if ( act$act == FileAnalysis::ACTION_EXTRACT ) return;
|
||||
|
||||
if ( s$extract_file )
|
||||
{
|
||||
local suffix = fmt("%d.dat", s$num_extracted_files);
|
||||
local fname = generate_extraction_filename(extraction_prefix, c, suffix);
|
||||
s$extraction_file = open(fname);
|
||||
if ( s$passive )
|
||||
set_contents_file(id, CONTENTS_RESP, s$extraction_file);
|
||||
else
|
||||
set_contents_file(id, CONTENTS_ORIG, s$extraction_file);
|
||||
}
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
++extract_count;
|
||||
FileAnalysis::add_action(info$file_id, [$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=-5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_EOF &&
|
||||
trig != FileAnalysis::TRIGGER_DONE ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "FTP_DATA" ) return;
|
||||
|
||||
for ( act in info$actions )
|
||||
if ( act$act == FileAnalysis::ACTION_EXTRACT )
|
||||
{
|
||||
local s: FTP::Info;
|
||||
s$ts = network_time();
|
||||
s$tags = set();
|
||||
s$user = "<ftp-data>";
|
||||
s$extraction_file = act$extract_filename;
|
||||
|
||||
if ( info?$conns )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
s$uid = info$conns[cid]$uid;
|
||||
s$id = cid;
|
||||
break;
|
||||
}
|
||||
|
||||
Log::write(FTP::LOG, s);
|
||||
}
|
||||
}
|
||||
|
||||
event log_ftp(rec: Info) &priority=-10
|
||||
|
|
|
@ -16,7 +16,8 @@ export {
|
|||
|
||||
## List of commands that should have their command/response pairs logged.
|
||||
const logged_commands = {
|
||||
"APPE", "DELE", "RETR", "STOR", "STOU", "ACCT"
|
||||
"APPE", "DELE", "RETR", "STOR", "STOU", "ACCT", "PORT", "PASV", "EPRT",
|
||||
"EPSV"
|
||||
} &redef;
|
||||
|
||||
## This setting changes if passwords used in FTP sessions are captured or not.
|
||||
|
@ -25,6 +26,18 @@ export {
|
|||
## User IDs that can be considered "anonymous".
|
||||
const guest_ids = { "anonymous", "ftp", "ftpuser", "guest" } &redef;
|
||||
|
||||
## The expected endpoints of an FTP data channel.
|
||||
type ExpectedDataChannel: record {
|
||||
## Whether PASV mode is toggled for control channel.
|
||||
passive: bool &log;
|
||||
## The host that will be initiating the data connection.
|
||||
orig_h: addr &log;
|
||||
## The host that will be accepting the data connection.
|
||||
resp_h: addr &log;
|
||||
## The port at which the acceptor is listening for the data connection.
|
||||
resp_p: port &log;
|
||||
};
|
||||
|
||||
type Info: record {
|
||||
## Time when the command was sent.
|
||||
ts: time &log;
|
||||
|
@ -55,6 +68,9 @@ export {
|
|||
## Arbitrary tags that may indicate a particular attribute of this command.
|
||||
tags: set[string] &log &default=set();
|
||||
|
||||
## Expected FTP data channel.
|
||||
data_channel: ExpectedDataChannel &log &optional;
|
||||
|
||||
## Current working directory that this session is in. By making
|
||||
## the default value '/.', we can indicate that unless something
|
||||
## more concrete is discovered that the existing but unknown
|
||||
|
@ -103,7 +119,7 @@ redef dpd_config += { [ANALYZER_FTP] = [$ports = ports] };
|
|||
redef likely_server_ports += { 21/tcp, 2811/tcp };
|
||||
|
||||
# Establish the variable for tracking expected connections.
|
||||
global ftp_data_expected: table[addr, port] of Info &create_expire=5mins;
|
||||
global ftp_data_expected: table[addr, port] of Info &read_expire=5mins;
|
||||
|
||||
event bro_init() &priority=5
|
||||
{
|
||||
|
@ -190,8 +206,19 @@ function ftp_message(s: Info)
|
|||
delete s$mime_type;
|
||||
delete s$mime_desc;
|
||||
delete s$file_size;
|
||||
# Same with data channel.
|
||||
delete s$data_channel;
|
||||
# Tags are cleared everytime too.
|
||||
delete s$tags;
|
||||
s$tags = set();
|
||||
}
|
||||
|
||||
function add_expected_data_channel(s: Info, chan: ExpectedDataChannel)
|
||||
{
|
||||
s$passive = chan$passive;
|
||||
s$data_channel = chan;
|
||||
ftp_data_expected[chan$resp_h, chan$resp_p] = s;
|
||||
expect_connection(chan$orig_h, chan$resp_h, chan$resp_p, ANALYZER_FTP_DATA,
|
||||
5mins);
|
||||
}
|
||||
|
||||
event ftp_request(c: connection, command: string, arg: string) &priority=5
|
||||
|
@ -226,9 +253,8 @@ event ftp_request(c: connection, command: string, arg: string) &priority=5
|
|||
|
||||
if ( data$valid )
|
||||
{
|
||||
c$ftp$passive=F;
|
||||
ftp_data_expected[data$h, data$p] = c$ftp;
|
||||
expect_connection(id$resp_h, data$h, data$p, ANALYZER_FILE, 5mins);
|
||||
add_expected_data_channel(c$ftp, [$passive=F, $orig_h=id$resp_h,
|
||||
$resp_h=data$h, $resp_p=data$p]);
|
||||
}
|
||||
else
|
||||
{
|
||||
|
@ -280,8 +306,8 @@ event ftp_reply(c: connection, code: count, msg: string, cont_resp: bool) &prior
|
|||
if ( code == 229 && data$h == [::] )
|
||||
data$h = id$resp_h;
|
||||
|
||||
ftp_data_expected[data$h, data$p] = c$ftp;
|
||||
expect_connection(id$orig_h, data$h, data$p, ANALYZER_FILE, 5mins);
|
||||
add_expected_data_channel(c$ftp, [$passive=T, $orig_h=id$orig_h,
|
||||
$resp_h=data$h, $resp_p=data$p]);
|
||||
}
|
||||
else
|
||||
{
|
||||
|
@ -331,12 +357,9 @@ event file_transferred(c: connection, prefix: string, descr: string,
|
|||
}
|
||||
}
|
||||
|
||||
event file_transferred(c: connection, prefix: string, descr: string,
|
||||
mime_type: string) &priority=-5
|
||||
event connection_state_remove(c: connection) &priority=-5
|
||||
{
|
||||
local id = c$id;
|
||||
if ( [id$resp_h, id$resp_p] in ftp_data_expected )
|
||||
delete ftp_data_expected[id$resp_h, id$resp_p];
|
||||
delete ftp_data_expected[c$id$resp_h, c$id$resp_p];
|
||||
}
|
||||
|
||||
# Use state remove event to cover connections terminated by RST.
|
||||
|
|
|
@ -1,5 +1,6 @@
|
|||
@load ./main
|
||||
@load ./utils
|
||||
@load ./file-analysis
|
||||
@load ./file-ident
|
||||
@load ./file-hash
|
||||
@load ./file-extract
|
||||
|
|
36
scripts/base/protocols/http/file-analysis.bro
Normal file
36
scripts/base/protocols/http/file-analysis.bro
Normal file
|
@ -0,0 +1,36 @@
|
|||
@load ./main
|
||||
@load ./utils
|
||||
@load base/utils/conn-ids
|
||||
@load base/frameworks/file-analysis/main
|
||||
|
||||
module HTTP;
|
||||
|
||||
export {
|
||||
## Determines whether the default :bro:see:`get_file_handle` handler
|
||||
## is used to return file handles to the file analysis framework.
|
||||
## Redefine to true in order to provide a custom handler which overrides
|
||||
## the default HTTP.
|
||||
const disable_default_file_handle_provider: bool = F &redef;
|
||||
|
||||
## Default file handle provider for HTTP.
|
||||
function get_file_handle(c: connection, is_orig: bool): string
|
||||
{
|
||||
if ( ! c?$http ) return "";
|
||||
|
||||
if ( c$http$range_request )
|
||||
return fmt("%s %s %s %s", ANALYZER_HTTP, is_orig, c$id$orig_h,
|
||||
build_url(c$http));
|
||||
|
||||
return fmt("%s %s %s %s %s", ANALYZER_HTTP, c$start_time, is_orig,
|
||||
c$http$trans_depth, id_string(c$id));
|
||||
}
|
||||
}
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
event get_file_handle(tag: AnalyzerTag, c: connection, is_orig: bool)
|
||||
{
|
||||
if ( tag != ANALYZER_HTTP ) return;
|
||||
if ( HTTP::disable_default_file_handle_provider ) return;
|
||||
return_file_handle(HTTP::get_file_handle(c, is_orig));
|
||||
}
|
|
@ -2,8 +2,7 @@
|
|||
##! the message body from the server can be extracted with this script.
|
||||
|
||||
@load ./main
|
||||
@load ./file-ident
|
||||
@load base/utils/files
|
||||
@load ./file-analysis
|
||||
|
||||
module HTTP;
|
||||
|
||||
|
@ -16,45 +15,77 @@ export {
|
|||
|
||||
redef record Info += {
|
||||
## On-disk file where the response body was extracted to.
|
||||
extraction_file: file &log &optional;
|
||||
extraction_file: string &log &optional;
|
||||
|
||||
## Indicates if the response body is to be extracted or not. Must be
|
||||
## set before or by the first :bro:id:`http_entity_data` event for the
|
||||
## content.
|
||||
## set before or by the first :bro:enum:`FileAnalysis::TRIGGER_NEW`
|
||||
## for the file content.
|
||||
extract_file: bool &default=F;
|
||||
};
|
||||
}
|
||||
|
||||
event http_entity_data(c: connection, is_orig: bool, length: count, data: string) &priority=-5
|
||||
{
|
||||
# Client body extraction is not currently supported in this script.
|
||||
if ( is_orig )
|
||||
return;
|
||||
global extract_count: count = 0;
|
||||
|
||||
if ( c$http$first_chunk )
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$mime_type ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "HTTP" ) return;
|
||||
if ( extract_file_types !in info$mime_type ) return;
|
||||
|
||||
for ( act in info$actions )
|
||||
if ( act$act == FileAnalysis::ACTION_EXTRACT ) return;
|
||||
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
++extract_count;
|
||||
FileAnalysis::add_action(info$file_id, [$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
if ( c$http?$mime_type &&
|
||||
extract_file_types in c$http$mime_type )
|
||||
{
|
||||
c$http$extract_file = T;
|
||||
}
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$http ) next;
|
||||
|
||||
c$http$extraction_file = fname;
|
||||
}
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_NEW ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "HTTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
local extracting: bool = F;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$http ) next;
|
||||
|
||||
if ( c$http$extract_file )
|
||||
{
|
||||
local suffix = fmt("%s_%d.dat", is_orig ? "orig" : "resp", c$http_state$current_response);
|
||||
local fname = generate_extraction_filename(extraction_prefix, c, suffix);
|
||||
if ( ! extracting )
|
||||
{
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
extracting = T;
|
||||
++extract_count;
|
||||
}
|
||||
|
||||
c$http$extraction_file = open(fname);
|
||||
enable_raw_output(c$http$extraction_file);
|
||||
c$http$extraction_file = fname;
|
||||
}
|
||||
}
|
||||
|
||||
if ( c$http?$extraction_file )
|
||||
print c$http$extraction_file, data;
|
||||
}
|
||||
|
||||
event http_end_entity(c: connection, is_orig: bool)
|
||||
{
|
||||
if ( c$http?$extraction_file )
|
||||
close(c$http$extraction_file);
|
||||
}
|
||||
|
|
|
@ -1,15 +1,11 @@
|
|||
##! Calculate hashes for HTTP body transfers.
|
||||
|
||||
@load ./file-ident
|
||||
@load ./main
|
||||
@load ./file-analysis
|
||||
|
||||
module HTTP;
|
||||
|
||||
export {
|
||||
redef enum Notice::Type += {
|
||||
## Indicates that an MD5 sum was calculated for an HTTP response body.
|
||||
MD5,
|
||||
};
|
||||
|
||||
redef record Info += {
|
||||
## MD5 sum for a file transferred over HTTP calculated from the
|
||||
## response body.
|
||||
|
@ -19,10 +15,6 @@ export {
|
|||
## if a file should have an MD5 sum generated. It must be
|
||||
## set to T at the time of or before the first chunk of body data.
|
||||
calc_md5: bool &default=F;
|
||||
|
||||
## Indicates if an MD5 sum is being calculated for the current
|
||||
## request/response pair.
|
||||
md5_handle: opaque of md5 &optional;
|
||||
};
|
||||
|
||||
## Generate MD5 sums for these filetypes.
|
||||
|
@ -31,62 +23,67 @@ export {
|
|||
&redef;
|
||||
}
|
||||
|
||||
## Initialize and calculate the hash.
|
||||
event http_entity_data(c: connection, is_orig: bool, length: count, data: string) &priority=5
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( is_orig || ! c?$http ) return;
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$mime_type ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "HTTP" ) return;
|
||||
|
||||
if ( c$http$first_chunk )
|
||||
if ( generate_md5 in info$mime_type )
|
||||
FileAnalysis::add_action(info$file_id, [$act=FileAnalysis::ACTION_MD5]);
|
||||
else if ( info?$conns )
|
||||
{
|
||||
if ( c$http$calc_md5 ||
|
||||
(c$http?$mime_type && generate_md5 in c$http$mime_type) )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
c$http$md5_handle = md5_hash_init();
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$http ) next;
|
||||
|
||||
if ( c$http$calc_md5 )
|
||||
{
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_MD5]);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ( c$http?$md5_handle )
|
||||
md5_hash_update(c$http$md5_handle, data);
|
||||
}
|
||||
|
||||
## In the event of a content gap during a file transfer, detect the state for
|
||||
## the MD5 sum calculation and stop calculating the MD5 since it would be
|
||||
## incorrect anyway.
|
||||
event content_gap(c: connection, is_orig: bool, seq: count, length: count) &priority=5
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( is_orig || ! c?$http || ! c$http?$md5_handle ) return;
|
||||
if ( trig != FileAnalysis::TRIGGER_DONE &&
|
||||
trig != FileAnalysis::TRIGGER_EOF ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "HTTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
set_state(c, F, is_orig);
|
||||
md5_hash_finish(c$http$md5_handle); # Ignore return value.
|
||||
delete c$http$md5_handle;
|
||||
}
|
||||
local act: FileAnalysis::ActionArgs = [$act=FileAnalysis::ACTION_MD5];
|
||||
|
||||
## When the file finishes downloading, finish the hash and generate a notice.
|
||||
event http_message_done(c: connection, is_orig: bool, stat: http_message_stat) &priority=-3
|
||||
{
|
||||
if ( is_orig || ! c?$http ) return;
|
||||
if ( act !in info$actions ) return;
|
||||
|
||||
if ( c$http?$md5_handle )
|
||||
local result = info$actions[act];
|
||||
|
||||
if ( ! result?$md5 ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local url = build_url_http(c$http);
|
||||
c$http$md5 = md5_hash_finish(c$http$md5_handle);
|
||||
delete c$http$md5_handle;
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
NOTICE([$note=MD5, $msg=fmt("%s %s %s", c$id$orig_h, c$http$md5, url),
|
||||
$sub=c$http$md5, $conn=c]);
|
||||
if ( ! c?$http ) next;
|
||||
|
||||
c$http$md5 = result$md5;
|
||||
}
|
||||
}
|
||||
|
||||
event connection_state_remove(c: connection) &priority=-5
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( c?$http_state &&
|
||||
c$http_state$current_response in c$http_state$pending &&
|
||||
c$http_state$pending[c$http_state$current_response]?$md5_handle )
|
||||
{
|
||||
# The MD5 sum isn't going to be saved anywhere since the entire
|
||||
# body wouldn't have been seen anyway and we'd just be giving an
|
||||
# incorrect MD5 sum.
|
||||
md5_hash_finish(c$http$md5_handle);
|
||||
delete c$http$md5_handle;
|
||||
}
|
||||
if ( trig != FileAnalysis::TRIGGER_GAP ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "HTTP" ) return;
|
||||
|
||||
FileAnalysis::remove_action(info$file_id, [$act=FileAnalysis::ACTION_MD5]);
|
||||
}
|
||||
|
|
|
@ -1,15 +1,9 @@
|
|||
##! Identification of file types in HTTP response bodies with file content sniffing.
|
||||
|
||||
@load base/frameworks/signatures
|
||||
@load base/frameworks/notice
|
||||
@load ./main
|
||||
@load ./utils
|
||||
|
||||
# Add the magic number signatures to the core signature set.
|
||||
@load-sigs ./file-ident.sig
|
||||
|
||||
# Ignore the signatures used to match files
|
||||
redef Signatures::ignored_ids += /^matchfile-/;
|
||||
@load ./file-analysis
|
||||
|
||||
module HTTP;
|
||||
|
||||
|
@ -22,11 +16,6 @@ export {
|
|||
redef record Info += {
|
||||
## Mime type of response body identified by content sniffing.
|
||||
mime_type: string &log &optional;
|
||||
|
||||
## Indicates that no data of the current file transfer has been
|
||||
## seen yet. After the first :bro:id:`http_entity_data` event, it
|
||||
## will be set to F.
|
||||
first_chunk: bool &default=T;
|
||||
};
|
||||
|
||||
## Mapping between mime types and regular expressions for URLs
|
||||
|
@ -43,43 +32,34 @@ export {
|
|||
const ignored_incorrect_file_type_urls = /^$/ &redef;
|
||||
}
|
||||
|
||||
event signature_match(state: signature_state, msg: string, data: string) &priority=5
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
# Only signatures matching file types are dealt with here.
|
||||
if ( /^matchfile-/ !in state$sig_id ) return;
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$mime_type ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "HTTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
local c = state$conn;
|
||||
set_state(c, F, F);
|
||||
|
||||
# Not much point in any of this if we don't know about the HTTP session.
|
||||
if ( ! c?$http ) return;
|
||||
|
||||
# Set the mime type that was detected.
|
||||
c$http$mime_type = msg;
|
||||
|
||||
if ( msg in mime_types_extensions &&
|
||||
c$http?$uri && mime_types_extensions[msg] !in c$http$uri )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$http ) next;
|
||||
|
||||
c$http$mime_type = info$mime_type;
|
||||
|
||||
if ( info$mime_type !in mime_types_extensions ) next;
|
||||
if ( ! c$http?$uri ) next;
|
||||
if ( mime_types_extensions[info$mime_type] in c$http$uri ) next;
|
||||
|
||||
local url = build_url_http(c$http);
|
||||
|
||||
if ( url == ignored_incorrect_file_type_urls )
|
||||
return;
|
||||
if ( url == ignored_incorrect_file_type_urls ) next;
|
||||
|
||||
local message = fmt("%s %s %s", msg, c$http$method, url);
|
||||
local message = fmt("%s %s %s", info$mime_type, c$http$method, url);
|
||||
NOTICE([$note=Incorrect_File_Type,
|
||||
$msg=message,
|
||||
$conn=c]);
|
||||
}
|
||||
}
|
||||
|
||||
event http_entity_data(c: connection, is_orig: bool, length: count, data: string) &priority=5
|
||||
{
|
||||
if ( c$http$first_chunk && ! c$http?$mime_type )
|
||||
c$http$mime_type = split1(identify_data(data, T), /;/)[1];
|
||||
}
|
||||
|
||||
event http_entity_data(c: connection, is_orig: bool, length: count, data: string) &priority=-10
|
||||
{
|
||||
if ( c$http$first_chunk )
|
||||
c$http$first_chunk=F;
|
||||
}
|
||||
|
|
|
@ -1,144 +0,0 @@
|
|||
# These signatures are used as a replacement for libmagic. The signature
|
||||
# name needs to start with "matchfile" and the "event" directive takes
|
||||
# the mime type of the file matched by the http-reply-body pattern.
|
||||
#
|
||||
# Signatures from: http://www.garykessler.net/library/file_sigs.html
|
||||
|
||||
signature matchfile-exe {
|
||||
http-reply-body /\x4D\x5A/
|
||||
event "application/x-dosexec"
|
||||
}
|
||||
|
||||
signature matchfile-elf {
|
||||
http-reply-body /\x7F\x45\x4C\x46/
|
||||
event "application/x-executable"
|
||||
}
|
||||
|
||||
signature matchfile-script {
|
||||
# This is meant to match the interpreter declaration at the top of many
|
||||
# interpreted scripts.
|
||||
http-reply-body /\#\![[:blank:]]?\//
|
||||
event "application/x-script"
|
||||
}
|
||||
|
||||
signature matchfile-wmv {
|
||||
http-reply-body /\x30\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C/
|
||||
event "video/x-ms-wmv"
|
||||
}
|
||||
|
||||
signature matchfile-flv {
|
||||
http-reply-body /\x46\x4C\x56\x01/
|
||||
event "video/x-flv"
|
||||
}
|
||||
|
||||
signature matchfile-swf {
|
||||
http-reply-body /[\x46\x43]\x57\x53/
|
||||
event "application/x-shockwave-flash"
|
||||
}
|
||||
|
||||
signature matchfile-jar {
|
||||
http-reply-body /\x5F\x27\xA8\x89/
|
||||
event "application/java-archive"
|
||||
}
|
||||
|
||||
signature matchfile-class {
|
||||
http-reply-body /\xCA\xFE\xBA\xBE/
|
||||
event "application/java-byte-code"
|
||||
}
|
||||
|
||||
signature matchfile-msoffice-2007 {
|
||||
# MS Office 2007 XML documents
|
||||
http-reply-body /\x50\x4B\x03\x04\x14\x00\x06\x00/
|
||||
event "application/msoffice"
|
||||
}
|
||||
|
||||
signature matchfile-msoffice {
|
||||
# Older MS Office files
|
||||
http-reply-body /\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1/
|
||||
event "application/msoffice"
|
||||
}
|
||||
|
||||
signature matchfile-rtf {
|
||||
http-reply-body /\x7B\x5C\x72\x74\x66\x31/
|
||||
event "application/rtf"
|
||||
}
|
||||
|
||||
signature matchfile-lnk {
|
||||
http-reply-body /\x4C\x00\x00\x00\x01\x14\x02\x00\x00\x00\x00\x00\xC0\x00\x00\x00\x00\x00\x00\x46/
|
||||
event "application/x-ms-shortcut"
|
||||
}
|
||||
|
||||
signature matchfile-torrent {
|
||||
http-reply-body /\x64\x38\x3A\x61\x6E\x6E\x6F\x75\x6E\x63\x65/
|
||||
event "application/x-bittorrent"
|
||||
}
|
||||
|
||||
signature matchfile-pdf {
|
||||
http-reply-body /\x25\x50\x44\x46/
|
||||
event "application/pdf"
|
||||
}
|
||||
|
||||
signature matchfile-html {
|
||||
http-reply-body /<[hH][tT][mM][lL]/
|
||||
event "text/html"
|
||||
}
|
||||
|
||||
signature matchfile-html2 {
|
||||
http-reply-body /<![dD][oO][cC][tT][yY][pP][eE][[:blank:]][hH][tT][mM][lL]/
|
||||
event "text/html"
|
||||
}
|
||||
|
||||
signature matchfile-xml {
|
||||
http-reply-body /<\??[xX][mM][lL]/
|
||||
event "text/xml"
|
||||
}
|
||||
|
||||
signature matchfile-gif {
|
||||
http-reply-body /\x47\x49\x46\x38[\x37\x39]\x61/
|
||||
event "image/gif"
|
||||
}
|
||||
|
||||
signature matchfile-jpg {
|
||||
http-reply-body /\xFF\xD8\xFF[\xDB\xE0\xE1\xE2\xE3\xE8]..[\x4A\x45\x53][\x46\x78\x50][\x49\x69][\x46\x66]/
|
||||
event "image/jpeg"
|
||||
}
|
||||
|
||||
signature matchfile-tiff {
|
||||
http-reply-body /\x4D\x4D\x00[\x2A\x2B]/
|
||||
event "image/tiff"
|
||||
}
|
||||
|
||||
signature matchfile-png {
|
||||
http-reply-body /\x89\x50\x4e\x47/
|
||||
event "image/png"
|
||||
}
|
||||
|
||||
signature matchfile-zip {
|
||||
http-reply-body /\x50\x4B\x03\x04/
|
||||
event "application/zip"
|
||||
}
|
||||
|
||||
signature matchfile-bzip {
|
||||
http-reply-body /\x42\x5A\x68/
|
||||
event "application/bzip2"
|
||||
}
|
||||
|
||||
signature matchfile-gzip {
|
||||
http-reply-body /\x1F\x8B\x08/
|
||||
event "application/x-gzip"
|
||||
}
|
||||
|
||||
signature matchfile-cab {
|
||||
http-reply-body /\x4D\x53\x43\x46/
|
||||
event "application/vnd.ms-cab-compressed"
|
||||
}
|
||||
|
||||
signature matchfile-rar {
|
||||
http-reply-body /\x52\x61\x72\x21\x1A\x07\x00/
|
||||
event "application/x-rar-compressed"
|
||||
}
|
||||
|
||||
signature matchfile-7z {
|
||||
http-reply-body /\x37\x7A\xBC\xAF\x27\x1C/
|
||||
event "application/x-7z-compressed"
|
||||
}
|
|
@ -71,6 +71,10 @@ export {
|
|||
|
||||
## All of the headers that may indicate if the request was proxied.
|
||||
proxied: set[string] &log &optional;
|
||||
|
||||
## Indicates if this request can assume 206 partial content in
|
||||
## response.
|
||||
range_request: bool &default=F;
|
||||
};
|
||||
|
||||
## Structure to maintain state for an HTTP connection with multiple
|
||||
|
@ -236,6 +240,9 @@ event http_header(c: connection, is_orig: bool, name: string, value: string) &pr
|
|||
# The split is done to remove the occasional port value that shows up here.
|
||||
c$http$host = split1(value, /:/)[1];
|
||||
|
||||
else if ( name == "RANGE" )
|
||||
c$http$range_request = T;
|
||||
|
||||
else if ( name == "USER-AGENT" )
|
||||
c$http$user_agent = value;
|
||||
|
||||
|
|
|
@ -1,2 +1,3 @@
|
|||
@load ./main
|
||||
@load ./dcc-send
|
||||
@load ./file-analysis
|
||||
|
|
|
@ -30,67 +30,144 @@ export {
|
|||
dcc_mime_type: string &log &optional;
|
||||
|
||||
## The file handle for the file to be extracted
|
||||
extraction_file: file &log &optional;
|
||||
extraction_file: string &log &optional;
|
||||
|
||||
## A boolean to indicate if the current file transfer should be extracted.
|
||||
extract_file: bool &default=F;
|
||||
|
||||
## The count of the number of file that have been extracted during the session.
|
||||
num_extracted_files: count &default=0;
|
||||
};
|
||||
}
|
||||
|
||||
global dcc_expected_transfers: table[addr, port] of Info = table();
|
||||
global dcc_expected_transfers: table[addr, port] of Info &read_expire=5mins;
|
||||
|
||||
event file_transferred(c: connection, prefix: string, descr: string,
|
||||
mime_type: string) &priority=3
|
||||
global extract_count: count = 0;
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
local id = c$id;
|
||||
if ( [id$resp_h, id$resp_p] !in dcc_expected_transfers )
|
||||
return;
|
||||
if ( trig != FileAnalysis::TRIGGER_NEW ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "IRC_DATA" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
local irc = dcc_expected_transfers[id$resp_h, id$resp_p];
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
local extracting: bool = F;
|
||||
|
||||
irc$dcc_mime_type = split1(mime_type, /;/)[1];
|
||||
|
||||
if ( extract_file_types == irc$dcc_mime_type )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
irc$extract_file = T;
|
||||
}
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( irc$extract_file )
|
||||
{
|
||||
local suffix = fmt("%d.dat", ++irc$num_extracted_files);
|
||||
local fname = generate_extraction_filename(extraction_prefix, c, suffix);
|
||||
irc$extraction_file = open(fname);
|
||||
if ( [cid$resp_h, cid$resp_p] !in dcc_expected_transfers ) next;
|
||||
|
||||
local s = dcc_expected_transfers[cid$resp_h, cid$resp_p];
|
||||
|
||||
if ( ! s$extract_file ) next;
|
||||
|
||||
if ( ! extracting )
|
||||
{
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
extracting = T;
|
||||
++extract_count;
|
||||
}
|
||||
|
||||
s$extraction_file = fname;
|
||||
}
|
||||
}
|
||||
|
||||
event file_transferred(c: connection, prefix: string, descr: string,
|
||||
mime_type: string) &priority=-4
|
||||
function set_dcc_mime(info: FileAnalysis::Info)
|
||||
{
|
||||
local id = c$id;
|
||||
if ( [id$resp_h, id$resp_p] !in dcc_expected_transfers )
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( [cid$resp_h, cid$resp_p] !in dcc_expected_transfers ) next;
|
||||
|
||||
local s = dcc_expected_transfers[cid$resp_h, cid$resp_p];
|
||||
|
||||
s$dcc_mime_type = info$mime_type;
|
||||
}
|
||||
}
|
||||
|
||||
function set_dcc_extraction_file(info: FileAnalysis::Info, filename: string)
|
||||
{
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( [cid$resp_h, cid$resp_p] !in dcc_expected_transfers ) next;
|
||||
|
||||
local s = dcc_expected_transfers[cid$resp_h, cid$resp_p];
|
||||
|
||||
s$extraction_file = filename;
|
||||
}
|
||||
}
|
||||
|
||||
function log_dcc(info: FileAnalysis::Info)
|
||||
{
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( [cid$resp_h, cid$resp_p] !in dcc_expected_transfers ) next;
|
||||
|
||||
local irc = dcc_expected_transfers[cid$resp_h, cid$resp_p];
|
||||
|
||||
local tmp = irc$command;
|
||||
irc$command = "DCC";
|
||||
Log::write(IRC::LOG, irc);
|
||||
irc$command = tmp;
|
||||
|
||||
# Delete these values in case another DCC transfer
|
||||
# happens during the IRC session.
|
||||
delete irc$extract_file;
|
||||
delete irc$extraction_file;
|
||||
delete irc$dcc_file_name;
|
||||
delete irc$dcc_file_size;
|
||||
delete irc$dcc_mime_type;
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
local irc = dcc_expected_transfers[id$resp_h, id$resp_p];
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$mime_type ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "IRC_DATA" ) return;
|
||||
|
||||
local tmp = irc$command;
|
||||
irc$command = "DCC";
|
||||
Log::write(IRC::LOG, irc);
|
||||
irc$command = tmp;
|
||||
set_dcc_mime(info);
|
||||
|
||||
if ( irc?$extraction_file )
|
||||
set_contents_file(id, CONTENTS_RESP, irc$extraction_file);
|
||||
if ( extract_file_types !in info$mime_type ) return;
|
||||
|
||||
# Delete these values in case another DCC transfer
|
||||
# happens during the IRC session.
|
||||
delete irc$extract_file;
|
||||
delete irc$extraction_file;
|
||||
delete irc$dcc_file_name;
|
||||
delete irc$dcc_file_size;
|
||||
delete irc$dcc_mime_type;
|
||||
delete dcc_expected_transfers[id$resp_h, id$resp_p];
|
||||
for ( act in info$actions )
|
||||
if ( act$act == FileAnalysis::ACTION_EXTRACT ) return;
|
||||
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
++extract_count;
|
||||
FileAnalysis::add_action(info$file_id, [$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
set_dcc_extraction_file(info, fname);
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=-5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "IRC_DATA" ) return;
|
||||
|
||||
log_dcc(info);
|
||||
}
|
||||
|
||||
event irc_dcc_message(c: connection, is_orig: bool,
|
||||
|
@ -100,11 +177,11 @@ event irc_dcc_message(c: connection, is_orig: bool,
|
|||
{
|
||||
set_session(c);
|
||||
if ( dcc_type != "SEND" )
|
||||
return;
|
||||
return;
|
||||
c$irc$dcc_file_name = argument;
|
||||
c$irc$dcc_file_size = size;
|
||||
local p = count_to_port(dest_port, tcp);
|
||||
expect_connection(to_addr("0.0.0.0"), address, p, ANALYZER_FILE, 5 min);
|
||||
expect_connection(to_addr("0.0.0.0"), address, p, ANALYZER_IRC_DATA, 5 min);
|
||||
dcc_expected_transfers[address, p] = c$irc;
|
||||
}
|
||||
|
||||
|
@ -114,3 +191,8 @@ event expected_connection_seen(c: connection, a: count) &priority=10
|
|||
if ( [id$resp_h, id$resp_p] in dcc_expected_transfers )
|
||||
add c$service["irc-dcc-data"];
|
||||
}
|
||||
|
||||
event connection_state_remove(c: connection) &priority=-5
|
||||
{
|
||||
delete dcc_expected_transfers[c$id$resp_h, c$id$resp_p];
|
||||
}
|
||||
|
|
30
scripts/base/protocols/irc/file-analysis.bro
Normal file
30
scripts/base/protocols/irc/file-analysis.bro
Normal file
|
@ -0,0 +1,30 @@
|
|||
@load ./dcc-send.bro
|
||||
@load base/utils/conn-ids
|
||||
@load base/frameworks/file-analysis/main
|
||||
|
||||
module IRC;
|
||||
|
||||
export {
|
||||
## Determines whether the default :bro:see:`get_file_handle` handler
|
||||
## is used to return file handles to the file analysis framework.
|
||||
## Redefine to true in order to provide a custom handler which overrides
|
||||
## the default for IRC.
|
||||
const disable_default_file_handle_provider: bool = F &redef;
|
||||
|
||||
## Default file handle provider for IRC.
|
||||
function get_file_handle(c: connection, is_orig: bool): string
|
||||
{
|
||||
if ( is_orig ) return "";
|
||||
return fmt("%s %s %s", ANALYZER_IRC_DATA, c$start_time,
|
||||
id_string(c$id));
|
||||
}
|
||||
}
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
event get_file_handle(tag: AnalyzerTag, c: connection, is_orig: bool)
|
||||
{
|
||||
if ( tag != ANALYZER_IRC_DATA ) return;
|
||||
if ( IRC::disable_default_file_handle_provider ) return;
|
||||
return_file_handle(IRC::get_file_handle(c, is_orig));
|
||||
}
|
|
@ -1,3 +1,4 @@
|
|||
@load ./main
|
||||
@load ./entities
|
||||
@load ./entities-excerpt
|
||||
@load ./file-analysis
|
||||
|
|
|
@ -9,44 +9,41 @@ export {
|
|||
redef record SMTP::EntityInfo += {
|
||||
## The entity body excerpt.
|
||||
excerpt: string &log &default="";
|
||||
|
||||
## Internal tracking to know how much of the body should be included
|
||||
## in the excerpt.
|
||||
excerpt_len: count &optional;
|
||||
};
|
||||
|
||||
## This is the default value for how much of the entity body should be
|
||||
## included for all MIME entities.
|
||||
const default_entity_excerpt_len = 0 &redef;
|
||||
|
||||
## This table defines how much of various entity bodies should be
|
||||
## included in excerpts.
|
||||
const entity_excerpt_len: table[string] of count = {}
|
||||
&redef
|
||||
&default = default_entity_excerpt_len;
|
||||
}
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=-1
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
if ( trig != FileAnalysis::TRIGGER_NEW ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
|
||||
if ( c$smtp$current_entity$content_len == 0 )
|
||||
c$smtp$current_entity$excerpt_len = entity_excerpt_len[c$smtp$current_entity$mime_type];
|
||||
if ( default_entity_excerpt_len > info$bof_buffer_size )
|
||||
info$bof_buffer_size = default_entity_excerpt_len;
|
||||
}
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=-2
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
if ( trig != FileAnalysis::TRIGGER_BOF_BUFFER ) return;
|
||||
if ( ! info?$bof_buffer ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
local ent = c$smtp$current_entity;
|
||||
if ( ent$content_len < ent$excerpt_len )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
if ( ent$content_len + length < ent$excerpt_len )
|
||||
ent$excerpt = cat(ent$excerpt, data);
|
||||
else
|
||||
{
|
||||
local x_bytes = ent$excerpt_len - ent$content_len;
|
||||
ent$excerpt = cat(ent$excerpt, sub_bytes(data, 1, x_bytes));
|
||||
}
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$smtp ) next;
|
||||
|
||||
if ( default_entity_excerpt_len > 0 )
|
||||
c$smtp$current_entity$excerpt =
|
||||
info$bof_buffer[0:default_entity_excerpt_len];
|
||||
}
|
||||
}
|
||||
|
|
|
@ -7,11 +7,6 @@
|
|||
module SMTP;
|
||||
|
||||
export {
|
||||
redef enum Notice::Type += {
|
||||
## Indicates that an MD5 sum was calculated for a MIME message.
|
||||
MD5,
|
||||
};
|
||||
|
||||
redef enum Log::ID += { ENTITIES_LOG };
|
||||
|
||||
type EntityInfo: record {
|
||||
|
@ -34,15 +29,12 @@ export {
|
|||
## Optionally calculate the file's MD5 sum. Must be set prior to the
|
||||
## first data chunk being see in an event.
|
||||
calc_md5: bool &default=F;
|
||||
## This boolean value indicates if an MD5 sum is being calculated
|
||||
## for the current file transfer.
|
||||
md5_handle: opaque of md5 &optional;
|
||||
|
||||
## Optionally write the file to disk. Must be set prior to first
|
||||
## data chunk being seen in an event.
|
||||
extract_file: bool &default=F;
|
||||
## Store the file handle here for the file currently being extracted.
|
||||
extraction_file: file &log &optional;
|
||||
extraction_file: string &log &optional;
|
||||
};
|
||||
|
||||
redef record Info += {
|
||||
|
@ -51,9 +43,6 @@ export {
|
|||
};
|
||||
|
||||
redef record State += {
|
||||
## Store a count of the number of files that have been transferred in
|
||||
## a conversation to create unique file names on disk.
|
||||
num_extracted_files: count &default=0;
|
||||
## Track the number of MIME encoded files transferred during a session.
|
||||
mime_level: count &default=0;
|
||||
};
|
||||
|
@ -77,6 +66,8 @@ export {
|
|||
global log_mime: event(rec: EntityInfo);
|
||||
}
|
||||
|
||||
global extract_count: count = 0;
|
||||
|
||||
event bro_init() &priority=5
|
||||
{
|
||||
Log::create_stream(SMTP::ENTITIES_LOG, [$columns=EntityInfo, $ev=log_mime]);
|
||||
|
@ -104,70 +95,151 @@ event mime_begin_entity(c: connection) &priority=10
|
|||
set_session(c, T);
|
||||
}
|
||||
|
||||
# This has priority -10 because other handlers need to know the current
|
||||
# content_len before it's updated by this handler.
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=-10
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
if ( trig != FileAnalysis::TRIGGER_NEW ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
c$smtp$current_entity$content_len = c$smtp$current_entity$content_len + length;
|
||||
}
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
local extracting: bool = F;
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=7
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
if ( c$smtp$current_entity$content_len == 0 )
|
||||
c$smtp$current_entity$mime_type = split1(identify_data(data, T), /;/)[1];
|
||||
}
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=-5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
|
||||
if ( c$smtp$current_entity$content_len == 0 )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local entity = c$smtp$current_entity;
|
||||
if ( generate_md5 in entity$mime_type && ! never_calc_md5 )
|
||||
entity$calc_md5 = T;
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( entity$calc_md5 )
|
||||
entity$md5_handle = md5_hash_init();
|
||||
}
|
||||
if ( ! c?$smtp ) next;
|
||||
|
||||
if ( c$smtp$current_entity?$md5_handle )
|
||||
md5_hash_update(entity$md5_handle, data);
|
||||
}
|
||||
if ( c$smtp$current_entity$extract_file )
|
||||
{
|
||||
if ( ! extracting )
|
||||
{
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
extracting = T;
|
||||
++extract_count;
|
||||
}
|
||||
|
||||
## In the event of a content gap during the MIME transfer, detect the state for
|
||||
## the MD5 sum calculation and stop calculating the MD5 since it would be
|
||||
## incorrect anyway.
|
||||
event content_gap(c: connection, is_orig: bool, seq: count, length: count) &priority=5
|
||||
{
|
||||
if ( is_orig || ! c?$smtp || ! c$smtp?$current_entity ) return;
|
||||
c$smtp$current_entity$extraction_file = fname;
|
||||
}
|
||||
|
||||
local entity = c$smtp$current_entity;
|
||||
if ( entity?$md5_handle )
|
||||
{
|
||||
md5_hash_finish(entity$md5_handle);
|
||||
delete entity$md5_handle;
|
||||
if ( c$smtp$current_entity$calc_md5 )
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_MD5]);
|
||||
}
|
||||
}
|
||||
|
||||
event mime_end_entity(c: connection) &priority=-3
|
||||
{
|
||||
# TODO: this check is only due to a bug in mime_end_entity that
|
||||
# causes the event to be generated twice for the same real event.
|
||||
if ( ! c?$smtp || ! c$smtp?$current_entity )
|
||||
function check_extract_by_type(info: FileAnalysis::Info)
|
||||
{
|
||||
if ( extract_file_types !in info$mime_type ) return;
|
||||
|
||||
for ( act in info$actions )
|
||||
if ( act$act == FileAnalysis::ACTION_EXTRACT ) return;
|
||||
|
||||
local fname: string = fmt("%s-%s-%d.dat", extraction_prefix, info$file_id,
|
||||
extract_count);
|
||||
++extract_count;
|
||||
FileAnalysis::add_action(info$file_id, [$act=FileAnalysis::ACTION_EXTRACT,
|
||||
$extract_filename=fname]);
|
||||
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$smtp ) next;
|
||||
|
||||
c$smtp$current_entity$extraction_file = fname;
|
||||
}
|
||||
}
|
||||
|
||||
function check_md5_by_type(info: FileAnalysis::Info)
|
||||
{
|
||||
if ( never_calc_md5 ) return;
|
||||
if ( generate_md5 !in info$mime_type ) return;
|
||||
|
||||
FileAnalysis::add_action(info$file_id, [$act=FileAnalysis::ACTION_MD5]);
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_TYPE ) return;
|
||||
if ( ! info?$mime_type ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
|
||||
if ( info?$conns )
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$smtp ) next;
|
||||
|
||||
c$smtp$current_entity$mime_type = info$mime_type;
|
||||
}
|
||||
|
||||
check_extract_by_type(info);
|
||||
check_md5_by_type(info);
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_GAP ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$smtp ) next;
|
||||
if ( ! c$smtp?$current_entity ) next;
|
||||
|
||||
FileAnalysis::remove_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_MD5]);
|
||||
}
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_EOF &&
|
||||
trig != FileAnalysis::TRIGGER_DONE ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
local c: connection = info$conns[cid];
|
||||
|
||||
if ( ! c?$smtp ) next;
|
||||
if ( ! c$smtp?$current_entity ) next;
|
||||
# Only log is there was some content.
|
||||
if ( info$seen_bytes == 0 ) next;
|
||||
|
||||
local act: FileAnalysis::ActionArgs = [$act=FileAnalysis::ACTION_MD5];
|
||||
|
||||
if ( act in info$actions )
|
||||
{
|
||||
local result = info$actions[act];
|
||||
if ( result?$md5 )
|
||||
c$smtp$current_entity$md5 = result$md5;
|
||||
}
|
||||
|
||||
c$smtp$current_entity$content_len = info$seen_bytes;
|
||||
|
||||
Log::write(SMTP::ENTITIES_LOG, c$smtp$current_entity);
|
||||
delete c$smtp$current_entity;
|
||||
return;
|
||||
|
||||
local entity = c$smtp$current_entity;
|
||||
if ( entity?$md5_handle )
|
||||
{
|
||||
entity$md5 = md5_hash_finish(entity$md5_handle);
|
||||
delete entity$md5_handle;
|
||||
|
||||
NOTICE([$note=MD5, $msg=fmt("Calculated a hash for a MIME entity from %s", c$id$orig_h),
|
||||
$sub=entity$md5, $conn=c]);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -183,62 +255,3 @@ event mime_one_header(c: connection, h: mime_header_rec)
|
|||
/[nN][aA][mM][eE][:blank:]*=/ in h$value )
|
||||
c$smtp$current_entity$filename = extract_filename_from_content_disposition(h$value);
|
||||
}
|
||||
|
||||
event mime_end_entity(c: connection) &priority=-5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
|
||||
# This check and the delete below are just to cope with a bug where
|
||||
# mime_end_entity can be generated multiple times for the same event.
|
||||
if ( ! c$smtp?$current_entity )
|
||||
return;
|
||||
|
||||
# Only log is there was some content.
|
||||
if ( c$smtp$current_entity$content_len > 0 )
|
||||
Log::write(SMTP::ENTITIES_LOG, c$smtp$current_entity);
|
||||
|
||||
delete c$smtp$current_entity;
|
||||
}
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
|
||||
if ( extract_file_types in c$smtp$current_entity$mime_type )
|
||||
c$smtp$current_entity$extract_file = T;
|
||||
}
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=3
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
|
||||
if ( c$smtp$current_entity$extract_file &&
|
||||
c$smtp$current_entity$content_len == 0 )
|
||||
{
|
||||
local suffix = fmt("%d.dat", ++c$smtp_state$num_extracted_files);
|
||||
local fname = generate_extraction_filename(extraction_prefix, c, suffix);
|
||||
c$smtp$current_entity$extraction_file = open(fname);
|
||||
enable_raw_output(c$smtp$current_entity$extraction_file);
|
||||
}
|
||||
}
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=-5
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
|
||||
if ( c$smtp$current_entity$extract_file && c$smtp$current_entity?$extraction_file )
|
||||
print c$smtp$current_entity$extraction_file, data;
|
||||
}
|
||||
|
||||
event mime_end_entity(c: connection) &priority=-3
|
||||
{
|
||||
if ( ! c?$smtp ) return;
|
||||
|
||||
# TODO: this check is only due to a bug in mime_end_entity that
|
||||
# causes the event to be generated twice for the same real event.
|
||||
if ( ! c$smtp?$current_entity )
|
||||
return;
|
||||
|
||||
if ( c$smtp$current_entity?$extraction_file )
|
||||
close(c$smtp$current_entity$extraction_file);
|
||||
}
|
||||
|
|
32
scripts/base/protocols/smtp/file-analysis.bro
Normal file
32
scripts/base/protocols/smtp/file-analysis.bro
Normal file
|
@ -0,0 +1,32 @@
|
|||
@load ./main
|
||||
@load ./entities
|
||||
@load base/utils/conn-ids
|
||||
@load base/frameworks/file-analysis/main
|
||||
|
||||
module SMTP;
|
||||
|
||||
export {
|
||||
## Determines whether the default :bro:see:`get_file_handle` handler
|
||||
## is used to return file handles to the file analysis framework.
|
||||
## Redefine to true in order to provide a custom handler which overrides
|
||||
## the default for SMTP.
|
||||
const disable_default_file_handle_provider: bool = F &redef;
|
||||
|
||||
## Default file handle provider for SMTP.
|
||||
function get_file_handle(c: connection, is_orig: bool): string
|
||||
{
|
||||
if ( ! c?$smtp ) return "";
|
||||
|
||||
return fmt("%s %s %s %s", ANALYZER_SMTP, c$start_time,
|
||||
c$smtp$trans_depth, c$smtp_state$mime_level);
|
||||
}
|
||||
}
|
||||
|
||||
module GLOBAL;
|
||||
|
||||
event get_file_handle(tag: AnalyzerTag, c: connection, is_orig: bool)
|
||||
{
|
||||
if ( tag != ANALYZER_SMTP ) return;
|
||||
if ( SMTP::disable_default_file_handle_provider ) return;
|
||||
return_file_handle(SMTP::get_file_handle(c, is_orig));
|
||||
}
|
|
@ -67,11 +67,6 @@ export {
|
|||
## (especially with large file transfers).
|
||||
const disable_analyzer_after_detection = T &redef;
|
||||
|
||||
## The openssl command line utility. If it's in the path the default
|
||||
## value will work, otherwise a full path string can be supplied for the
|
||||
## utility.
|
||||
const openssl_util = "openssl" &redef;
|
||||
|
||||
## The maximum amount of time a script can delay records from being logged.
|
||||
const max_log_delay = 15secs &redef;
|
||||
|
||||
|
|
|
@ -27,7 +27,7 @@ function compress_path(dir: string): string
|
|||
const cdup_sep = /((\/)*([^\/]|\\\/)+)?((\/)+\.\.(\/)*)/;
|
||||
|
||||
local parts = split_n(dir, cdup_sep, T, 1);
|
||||
if ( length(parts) > 1 )
|
||||
if ( |parts| > 1 )
|
||||
{
|
||||
# reaching a point with two parent dir references back-to-back means
|
||||
# we don't know about anything higher in the tree to pop off
|
||||
|
|
|
@ -6,7 +6,7 @@
|
|||
## characters.
|
||||
function is_string_binary(s: string): bool
|
||||
{
|
||||
return byte_len(gsub(s, /[\x00-\x7f]/, "")) * 100 / |s| >= 25;
|
||||
return |gsub(s, /[\x00-\x7f]/, "")| * 100 / |s| >= 25;
|
||||
}
|
||||
|
||||
## Joins a set of string together, with elements delimited by a constant string.
|
||||
|
|
|
@ -1,15 +1,34 @@
|
|||
@load base/frameworks/intel
|
||||
@load base/protocols/smtp/file-analysis
|
||||
@load base/utils/urls
|
||||
@load ./where-locations
|
||||
|
||||
event mime_segment_data(c: connection, length: count, data: string) &priority=3
|
||||
event intel_mime_data(info: FileAnalysis::Info, data: string)
|
||||
{
|
||||
local urls = find_all_urls_without_scheme(data);
|
||||
for ( url in urls )
|
||||
if ( ! info?$conns ) return;
|
||||
|
||||
for ( cid in info$conns )
|
||||
{
|
||||
Intel::seen([$str=url,
|
||||
$str_type=Intel::URL,
|
||||
$conn=c,
|
||||
$where=SMTP::IN_MESSAGE]);
|
||||
local c: connection = info$conns[cid];
|
||||
local urls = find_all_urls_without_scheme(data);
|
||||
for ( url in urls )
|
||||
{
|
||||
Intel::seen([$str=url,
|
||||
$str_type=Intel::URL,
|
||||
$conn=c,
|
||||
$where=SMTP::IN_MESSAGE]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
hook FileAnalysis::policy(trig: FileAnalysis::Trigger, info: FileAnalysis::Info)
|
||||
&priority=5
|
||||
{
|
||||
if ( trig != FileAnalysis::TRIGGER_NEW ) return;
|
||||
if ( ! info?$source ) return;
|
||||
if ( info$source != "SMTP" ) return;
|
||||
|
||||
FileAnalysis::add_action(info$file_id,
|
||||
[$act=FileAnalysis::ACTION_DATA_EVENT,
|
||||
$stream_event=intel_mime_data]);
|
||||
}
|
||||
|
|
|
@ -2,6 +2,7 @@
|
|||
##! a version of that software as old or older than the defined version a
|
||||
##! notice will be generated.
|
||||
|
||||
@load base/frameworks/control
|
||||
@load base/frameworks/notice
|
||||
@load base/frameworks/software
|
||||
|
||||
|
@ -13,17 +14,126 @@ export {
|
|||
Vulnerable_Version,
|
||||
};
|
||||
|
||||
type VulnerableVersionRange: record {
|
||||
## The minimal version of a vulnerable version range. This
|
||||
## field can be undefined if all previous versions of a piece
|
||||
## of software are vulnerable.
|
||||
min: Software::Version &optional;
|
||||
## The maximum vulnerable version. This field is deliberately
|
||||
## not optional because a maximum vulnerable version must
|
||||
## always be defined. This assumption may become incorrent
|
||||
## if all future versions of some software are to be considered
|
||||
## vulnerable. :)
|
||||
max: Software::Version;
|
||||
};
|
||||
|
||||
## The DNS zone where runtime vulnerable software updates will
|
||||
## be loaded from.
|
||||
const vulnerable_versions_update_endpoint = "" &redef;
|
||||
|
||||
## The interval at which vulnerable versions should grab updates
|
||||
## over DNS.
|
||||
const vulnerable_versions_update_interval = 1hr &redef;
|
||||
|
||||
## This is a table of software versions indexed by the name of the
|
||||
## software and yielding the latest version that is vulnerable.
|
||||
const vulnerable_versions: table[string] of Version &redef;
|
||||
## software and a set of version ranges that are declared to be
|
||||
## vulnerable for that software.
|
||||
const vulnerable_versions: table[string] of set[VulnerableVersionRange] = table() &redef;
|
||||
}
|
||||
|
||||
global internal_vulnerable_versions: table[string] of set[VulnerableVersionRange] = table();
|
||||
|
||||
event Control::configuration_update()
|
||||
{
|
||||
internal_vulnerable_versions = table();
|
||||
|
||||
# Copy the const vulnerable versions into the global modifiable one.
|
||||
for ( sw in vulnerable_versions )
|
||||
internal_vulnerable_versions[sw] = vulnerable_versions[sw];
|
||||
}
|
||||
|
||||
function decode_vulnerable_version_range(vuln_sw: string): VulnerableVersionRange
|
||||
{
|
||||
# Create a max value with a dunce value only because the $max field
|
||||
# is not optional.
|
||||
local vvr: Software::VulnerableVersionRange = [$max=[$major=0]];
|
||||
|
||||
if ( /max=/ !in vuln_sw )
|
||||
{
|
||||
Reporter::warning(fmt("The vulnerable software detection script encountered a version with no max value (which is required). %s", vuln_sw));
|
||||
return vvr;
|
||||
}
|
||||
|
||||
local versions = split1(vuln_sw, /\x09/);
|
||||
|
||||
for ( i in versions )
|
||||
{
|
||||
local field_and_ver = split1(versions[i], /=/);
|
||||
if ( |field_and_ver| != 2 )
|
||||
return vvr; #failure!
|
||||
|
||||
local ver = Software::parse(field_and_ver[2])$version;
|
||||
if ( field_and_ver[1] == "min" )
|
||||
vvr$min = ver;
|
||||
else if ( field_and_ver[1] == "max" )
|
||||
vvr$max = ver;
|
||||
}
|
||||
|
||||
return vvr;
|
||||
}
|
||||
|
||||
event grab_vulnerable_versions(i: count)
|
||||
{
|
||||
if ( vulnerable_versions_update_endpoint == "" )
|
||||
{
|
||||
# Reschedule this event in case the user updates the setting at runtime.
|
||||
schedule vulnerable_versions_update_interval { grab_vulnerable_versions(1) };
|
||||
return;
|
||||
}
|
||||
|
||||
when ( local result = lookup_hostname_txt(cat(i,".",vulnerable_versions_update_endpoint)) )
|
||||
{
|
||||
local parts = split1(result, /\x09/);
|
||||
if ( |parts| != 2 ) #failure or end of list!
|
||||
{
|
||||
schedule vulnerable_versions_update_interval { grab_vulnerable_versions(1) };
|
||||
return;
|
||||
}
|
||||
|
||||
local sw = parts[1];
|
||||
local vvr = decode_vulnerable_version_range(parts[2]);
|
||||
if ( sw !in internal_vulnerable_versions )
|
||||
internal_vulnerable_versions[sw] = set();
|
||||
add internal_vulnerable_versions[sw][vvr];
|
||||
|
||||
event grab_vulnerable_versions(i+1);
|
||||
}
|
||||
timeout 5secs
|
||||
{
|
||||
# In case a lookup fails, try starting over in one minute.
|
||||
schedule 1min { grab_vulnerable_versions(1) };
|
||||
}
|
||||
}
|
||||
|
||||
event bro_init()
|
||||
{
|
||||
event grab_vulnerable_versions(1);
|
||||
}
|
||||
|
||||
event log_software(rec: Info)
|
||||
{
|
||||
if ( rec$name in vulnerable_versions &&
|
||||
cmp_versions(rec$version, vulnerable_versions[rec$name]) <= 0 )
|
||||
if ( rec$name !in internal_vulnerable_versions )
|
||||
return;
|
||||
|
||||
for ( version_range in internal_vulnerable_versions[rec$name] )
|
||||
{
|
||||
NOTICE([$note=Vulnerable_Version, $src=rec$host,
|
||||
$msg=fmt("A vulnerable version of software was detected: %s", software_fmt(rec))]);
|
||||
if ( cmp_versions(rec$version, version_range$max) <= 0 &&
|
||||
(!version_range?$min || cmp_versions(rec$version, version_range$min) >= 0) )
|
||||
{
|
||||
# The software is inside a vulnerable version range.
|
||||
NOTICE([$note=Vulnerable_Version, $src=rec$host,
|
||||
$msg=fmt("%s is running %s which is vulnerable.", rec$host, software_fmt(rec)),
|
||||
$sub=software_fmt(rec)]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
@ -32,7 +32,7 @@ event log_http(rec: HTTP::Info)
|
|||
{
|
||||
# Data is returned as "<dateFirstDetected> <detectionRate>"
|
||||
local MHR_answer = split1(MHR_result, / /);
|
||||
if ( length(MHR_answer) == 2 && to_count(MHR_answer[2]) >= MHR_threshold )
|
||||
if ( |MHR_answer| == 2 && to_count(MHR_answer[2]) >= MHR_threshold )
|
||||
{
|
||||
local url = HTTP::build_url_http(rec);
|
||||
local message = fmt("%s %s %s", rec$id$orig_h, rec$md5, url);
|
||||
|
|
|
@ -8,10 +8,6 @@
|
|||
##! own certificate files and no duplicate checking is done across
|
||||
##! clusters so each node would log each certificate.
|
||||
##!
|
||||
##! - If there is a certificate input based vulnerability found in the
|
||||
##! openssl command line utility, you could be in trouble because this
|
||||
##! script uses that utility to convert from DER to PEM certificates.
|
||||
##!
|
||||
|
||||
@load base/protocols/ssl
|
||||
@load base/utils/directions-and-hosts
|
||||
|
@ -35,6 +31,7 @@ event ssl_established(c: connection) &priority=5
|
|||
{
|
||||
if ( ! c$ssl?$cert )
|
||||
return;
|
||||
|
||||
if ( ! addr_matches_host(c$id$resp_h, extract_certs_pem) )
|
||||
return;
|
||||
|
||||
|
@ -43,7 +40,24 @@ event ssl_established(c: connection) &priority=5
|
|||
return;
|
||||
|
||||
add extracted_certs[c$ssl$cert_hash];
|
||||
local side = Site::is_local_addr(c$id$resp_h) ? "local" : "remote";
|
||||
local cmd = fmt("%s x509 -inform DER -outform PEM >> certs-%s.pem", openssl_util, side);
|
||||
piped_exec(cmd, c$ssl$cert);
|
||||
local filename = Site::is_local_addr(c$id$resp_h) ? "certs-local.pem" : "certs-remote.pem";
|
||||
local outfile = open_for_append(filename);
|
||||
|
||||
print outfile, "-----BEGIN CERTIFICATE-----";
|
||||
|
||||
# Encode to base64 and format to fit 50 lines. Otherwise openssl won't like it later.
|
||||
local lines = split_all(encode_base64(c$ssl$cert), /.{50}/);
|
||||
local i = 1;
|
||||
for ( line in lines )
|
||||
{
|
||||
if ( |lines[i]| > 0 )
|
||||
{
|
||||
print outfile, lines[i];
|
||||
}
|
||||
i+=1;
|
||||
}
|
||||
|
||||
print outfile, "-----END CERTIFICATE-----";
|
||||
print outfile, "";
|
||||
close(outfile);
|
||||
}
|
||||
|
|
|
@ -14,13 +14,6 @@
|
|||
# information.
|
||||
@load frameworks/software/vulnerable
|
||||
|
||||
# Example vulnerable software. This needs to be updated and maintained over
|
||||
# time as new vulnerabilities are discovered.
|
||||
redef Software::vulnerable_versions += {
|
||||
["Flash"] = [$major=10,$minor=2,$minor2=153,$addl="1"],
|
||||
["Java"] = [$major=1,$minor=6,$minor2=0,$addl="22"],
|
||||
};
|
||||
|
||||
# Detect software changing (e.g. attacker installing hacked SSHD).
|
||||
@load frameworks/software/version-changes
|
||||
|
||||
|
|
|
@ -150,6 +150,10 @@ const Analyzer::Config Analyzer::analyzer_configs[] = {
|
|||
|
||||
{ AnalyzerTag::File, "FILE", File_Analyzer::InstantiateAnalyzer,
|
||||
File_Analyzer::Available, 0, false },
|
||||
{ AnalyzerTag::IRC_Data, "IRC_DATA", IRC_Data::InstantiateAnalyzer,
|
||||
IRC_Data::Available, 0, false },
|
||||
{ AnalyzerTag::FTP_Data, "FTP_DATA", FTP_Data::InstantiateAnalyzer,
|
||||
FTP_Data::Available, 0, false },
|
||||
{ AnalyzerTag::Backdoor, "BACKDOOR",
|
||||
BackDoor_Analyzer::InstantiateAnalyzer,
|
||||
BackDoor_Analyzer::Available, 0, false },
|
||||
|
|
|
@ -41,7 +41,7 @@ namespace AnalyzerTag {
|
|||
GTPv1,
|
||||
|
||||
// Other
|
||||
File, Backdoor, InterConn, SteppingStone, TCPStats,
|
||||
File, IRC_Data, FTP_Data, Backdoor, InterConn, SteppingStone, TCPStats,
|
||||
ConnSize,
|
||||
|
||||
// Support-analyzers
|
||||
|
|
|
@ -1,10 +1,48 @@
|
|||
#include "config.h"
|
||||
#include "Base64.h"
|
||||
#include <math.h>
|
||||
|
||||
int Base64Decoder::default_base64_table[256];
|
||||
const string Base64Decoder::default_alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
||||
int Base64Converter::default_base64_table[256];
|
||||
const string Base64Converter::default_alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
||||
|
||||
int* Base64Decoder::InitBase64Table(const string& alphabet)
|
||||
void Base64Converter::Encode(int len, const unsigned char* data, int* pblen, char** pbuf)
|
||||
{
|
||||
int blen;
|
||||
char *buf;
|
||||
|
||||
if ( ! pbuf )
|
||||
reporter->InternalError("nil pointer to encoding result buffer");
|
||||
|
||||
if ( *pbuf && (*pblen % 4 != 0) )
|
||||
reporter->InternalError("Base64 encode buffer not a multiple of 4");
|
||||
|
||||
if ( *pbuf )
|
||||
{
|
||||
buf = *pbuf;
|
||||
blen = *pblen;
|
||||
}
|
||||
else
|
||||
{
|
||||
blen = (int)(4 * ceil((double)len / 3));
|
||||
*pbuf = buf = new char[blen];
|
||||
*pblen = blen;
|
||||
}
|
||||
|
||||
for ( int i = 0, j = 0; (i < len) && ( j < blen ); )
|
||||
{
|
||||
uint32_t bit32 = data[i++] << 16;
|
||||
bit32 += (i++ < len ? data[i-1] : 0) << 8;
|
||||
bit32 += i++ < len ? data[i-1] : 0;
|
||||
|
||||
buf[j++] = alphabet[(bit32 >> 18) & 0x3f];
|
||||
buf[j++] = alphabet[(bit32 >> 12) & 0x3f];
|
||||
buf[j++] = (i == (len+2)) ? '=' : alphabet[(bit32 >> 6) & 0x3f];
|
||||
buf[j++] = (i >= (len+1)) ? '=' : alphabet[bit32 & 0x3f];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int* Base64Converter::InitBase64Table(const string& alphabet)
|
||||
{
|
||||
assert(alphabet.size() == 64);
|
||||
|
||||
|
@ -44,26 +82,42 @@ int* Base64Decoder::InitBase64Table(const string& alphabet)
|
|||
return base64_table;
|
||||
}
|
||||
|
||||
Base64Decoder::Base64Decoder(Analyzer* arg_analyzer, const string& alphabet)
|
||||
|
||||
|
||||
Base64Converter::Base64Converter(Analyzer* arg_analyzer, const string& arg_alphabet)
|
||||
{
|
||||
base64_table = InitBase64Table(alphabet.size() ? alphabet : default_alphabet);
|
||||
if ( arg_alphabet.size() > 0 )
|
||||
{
|
||||
assert(arg_alphabet.size() == 64);
|
||||
alphabet = arg_alphabet;
|
||||
}
|
||||
else
|
||||
{
|
||||
alphabet = default_alphabet;
|
||||
}
|
||||
|
||||
base64_table = 0;
|
||||
base64_group_next = 0;
|
||||
base64_padding = base64_after_padding = 0;
|
||||
errored = 0;
|
||||
analyzer = arg_analyzer;
|
||||
}
|
||||
|
||||
Base64Decoder::~Base64Decoder()
|
||||
Base64Converter::~Base64Converter()
|
||||
{
|
||||
if ( base64_table != default_base64_table )
|
||||
delete base64_table;
|
||||
}
|
||||
|
||||
int Base64Decoder::Decode(int len, const char* data, int* pblen, char** pbuf)
|
||||
int Base64Converter::Decode(int len, const char* data, int* pblen, char** pbuf)
|
||||
{
|
||||
int blen;
|
||||
char* buf;
|
||||
|
||||
// Initialization of table on first_time call of Decode.
|
||||
if ( ! base64_table )
|
||||
base64_table = InitBase64Table(alphabet);
|
||||
|
||||
if ( ! pbuf )
|
||||
reporter->InternalError("nil pointer to decoding result buffer");
|
||||
|
||||
|
@ -145,7 +199,7 @@ int Base64Decoder::Decode(int len, const char* data, int* pblen, char** pbuf)
|
|||
return dlen;
|
||||
}
|
||||
|
||||
int Base64Decoder::Done(int* pblen, char** pbuf)
|
||||
int Base64Converter::Done(int* pblen, char** pbuf)
|
||||
{
|
||||
const char* padding = "===";
|
||||
|
||||
|
@ -177,7 +231,7 @@ BroString* decode_base64(const BroString* s, const BroString* a)
|
|||
int rlen2, rlen = buf_len;
|
||||
char* rbuf2, *rbuf = new char[rlen];
|
||||
|
||||
Base64Decoder dec(0, a ? a->CheckString() : "");
|
||||
Base64Converter dec(0, a ? a->CheckString() : "");
|
||||
if ( dec.Decode(s->Len(), (const char*) s->Bytes(), &rlen, &rbuf) == -1 )
|
||||
goto err;
|
||||
|
||||
|
@ -195,3 +249,21 @@ err:
|
|||
delete [] rbuf;
|
||||
return 0;
|
||||
}
|
||||
|
||||
BroString* encode_base64(const BroString* s, const BroString* a)
|
||||
{
|
||||
if ( a && a->Len() != 64 )
|
||||
{
|
||||
reporter->Error("base64 alphabet is not 64 characters: %s",
|
||||
a->CheckString());
|
||||
return 0;
|
||||
}
|
||||
|
||||
char* outbuf = 0;
|
||||
int outlen = 0;
|
||||
Base64Converter enc(0, a ? a->CheckString() : "");
|
||||
enc.Encode(s->Len(), (const unsigned char*) s->Bytes(), &outlen, &outbuf);
|
||||
|
||||
return new BroString(1, (u_char*)outbuf, outlen);
|
||||
}
|
||||
|
||||
|
|
21
src/Base64.h
21
src/Base64.h
|
@ -10,14 +10,13 @@
|
|||
#include "Analyzer.h"
|
||||
|
||||
// Maybe we should have a base class for generic decoders?
|
||||
|
||||
class Base64Decoder {
|
||||
class Base64Converter {
|
||||
public:
|
||||
// <analyzer> is used for error reporting, and it should be zero when
|
||||
// the decoder is called by the built-in function decode_base64().
|
||||
// the decoder is called by the built-in function decode_base64() or encode_base64().
|
||||
// Empty alphabet indicates the default base64 alphabet.
|
||||
Base64Decoder(Analyzer* analyzer, const string& alphabet = "");
|
||||
~Base64Decoder();
|
||||
Base64Converter(Analyzer* analyzer, const string& alphabet = "");
|
||||
~Base64Converter();
|
||||
|
||||
// A note on Decode():
|
||||
//
|
||||
|
@ -30,6 +29,7 @@ public:
|
|||
// is not enough output buffer space.
|
||||
|
||||
int Decode(int len, const char* data, int* blen, char** buf);
|
||||
void Encode(int len, const unsigned char* data, int* blen, char** buf);
|
||||
|
||||
int Done(int* pblen, char** pbuf);
|
||||
int HasData() const { return base64_group_next != 0; }
|
||||
|
@ -51,19 +51,22 @@ protected:
|
|||
char error_msg[256];
|
||||
|
||||
protected:
|
||||
static const string default_alphabet;
|
||||
string alphabet;
|
||||
|
||||
static int* InitBase64Table(const string& alphabet);
|
||||
static int default_base64_table[256];
|
||||
char base64_group[4];
|
||||
int base64_group_next;
|
||||
int base64_padding;
|
||||
int base64_after_padding;
|
||||
int* base64_table;
|
||||
int errored; // if true, we encountered an error - skip further processing
|
||||
Analyzer* analyzer;
|
||||
int* base64_table;
|
||||
|
||||
static int* InitBase64Table(const string& alphabet);
|
||||
static int default_base64_table[256];
|
||||
static const string default_alphabet;
|
||||
};
|
||||
|
||||
BroString* decode_base64(const BroString* s, const BroString* a = 0);
|
||||
BroString* encode_base64(const BroString* s, const BroString* a = 0);
|
||||
|
||||
#endif /* base64_h */
|
||||
|
|
|
@ -369,7 +369,7 @@ VectorVal* BroString:: VecToPolicy(Vec* vec)
|
|||
BroString* string = (*vec)[i];
|
||||
StringVal* val = new StringVal(string->Len(),
|
||||
(const char*) string->Bytes());
|
||||
result->Assign(i+1, val, 0);
|
||||
result->Assign(i+1, val);
|
||||
}
|
||||
|
||||
return result;
|
||||
|
|
|
@ -451,14 +451,18 @@ set(bro_SRCS
|
|||
input/readers/Ascii.cc
|
||||
input/readers/Raw.cc
|
||||
input/readers/Benchmark.cc
|
||||
input/readers/Binary.cc
|
||||
|
||||
file_analysis/Manager.cc
|
||||
file_analysis/Info.cc
|
||||
file_analysis/InfoTimer.cc
|
||||
file_analysis/PendingFile.cc
|
||||
file_analysis/FileID.h
|
||||
file_analysis/Action.h
|
||||
file_analysis/ActionSet.cc
|
||||
file_analysis/Extract.cc
|
||||
file_analysis/Hash.cc
|
||||
file_analysis/DataEvent.cc
|
||||
file_analysis/analyzers/PE.cc
|
||||
|
||||
nb_dns.c
|
||||
|
|
|
@ -856,7 +856,7 @@ const char* CompositeHash::RecoverOneVal(const HashKey* k, const char* kp0,
|
|||
if ( have_val )
|
||||
kp1 = RecoverOneVal(k, kp1, k_end, vt->YieldType(), value,
|
||||
false);
|
||||
vv->Assign(index, value, 0);
|
||||
vv->Assign(index, value);
|
||||
}
|
||||
|
||||
pval = vv;
|
||||
|
|
|
@ -763,7 +763,7 @@ int dbg_handle_debug_input()
|
|||
Frame* curr_frame = g_frame_stack.back();
|
||||
const BroFunc* func = curr_frame->GetFunction();
|
||||
if ( func )
|
||||
current_module = func->GetID()->ModuleName();
|
||||
current_module = extract_module_name(func->Name());
|
||||
else
|
||||
current_module = GLOBAL_MODULE_NAME;
|
||||
|
||||
|
|
|
@ -6,6 +6,7 @@
|
|||
#include "Func.h"
|
||||
#include "NetVar.h"
|
||||
#include "Trigger.h"
|
||||
#include "file_analysis/Manager.h"
|
||||
|
||||
EventMgr mgr;
|
||||
|
||||
|
@ -124,6 +125,8 @@ void EventMgr::Drain()
|
|||
// processing, we ensure that it's done at a regular basis by checking
|
||||
// them here.
|
||||
Trigger::EvaluatePending();
|
||||
|
||||
file_mgr->EventDrainDone();
|
||||
}
|
||||
|
||||
void EventMgr::Describe(ODesc* d) const
|
||||
|
|
81
src/Expr.cc
81
src/Expr.cc
|
@ -485,7 +485,7 @@ Val* UnaryExpr::Eval(Frame* f) const
|
|||
for ( unsigned int i = 0; i < v_op->Size(); ++i )
|
||||
{
|
||||
Val* v_i = v_op->Lookup(i);
|
||||
result->Assign(i, v_i ? Fold(v_i) : 0, this);
|
||||
result->Assign(i, v_i ? Fold(v_i) : 0);
|
||||
}
|
||||
|
||||
Unref(v);
|
||||
|
@ -625,10 +625,9 @@ Val* BinaryExpr::Eval(Frame* f) const
|
|||
if ( v_op1->Lookup(i) && v_op2->Lookup(i) )
|
||||
v_result->Assign(i,
|
||||
Fold(v_op1->Lookup(i),
|
||||
v_op2->Lookup(i)),
|
||||
this);
|
||||
v_op2->Lookup(i)));
|
||||
else
|
||||
v_result->Assign(i, 0, this);
|
||||
v_result->Assign(i, 0);
|
||||
// SetError("undefined element in vector operation");
|
||||
}
|
||||
|
||||
|
@ -648,10 +647,9 @@ Val* BinaryExpr::Eval(Frame* f) const
|
|||
if ( vv_i )
|
||||
v_result->Assign(i,
|
||||
is_vec1 ?
|
||||
Fold(vv_i, v2) : Fold(v1, vv_i),
|
||||
this);
|
||||
Fold(vv_i, v2) : Fold(v1, vv_i));
|
||||
else
|
||||
v_result->Assign(i, 0, this);
|
||||
v_result->Assign(i, 0);
|
||||
|
||||
// SetError("Undefined element in vector operation");
|
||||
}
|
||||
|
@ -1049,10 +1047,10 @@ Val* IncrExpr::Eval(Frame* f) const
|
|||
if ( elt )
|
||||
{
|
||||
Val* new_elt = DoSingleEval(f, elt);
|
||||
v_vec->Assign(i, new_elt, this, OP_INCR);
|
||||
v_vec->Assign(i, new_elt, OP_INCR);
|
||||
}
|
||||
else
|
||||
v_vec->Assign(i, 0, this, OP_INCR);
|
||||
v_vec->Assign(i, 0, OP_INCR);
|
||||
}
|
||||
op->Assign(f, v_vec, OP_INCR);
|
||||
}
|
||||
|
@ -1919,7 +1917,7 @@ Val* BoolExpr::Eval(Frame* f) const
|
|||
result = new VectorVal(Type()->AsVectorType());
|
||||
result->Resize(vector_v->Size());
|
||||
result->AssignRepeat(0, result->Size(),
|
||||
scalar_v, this);
|
||||
scalar_v);
|
||||
}
|
||||
else
|
||||
result = vector_v->Ref()->AsVectorVal();
|
||||
|
@ -1957,10 +1955,10 @@ Val* BoolExpr::Eval(Frame* f) const
|
|||
(! op1->IsZero() && ! op2->IsZero()) :
|
||||
(! op1->IsZero() || ! op2->IsZero());
|
||||
|
||||
result->Assign(i, new Val(local_result, TYPE_BOOL), this);
|
||||
result->Assign(i, new Val(local_result, TYPE_BOOL));
|
||||
}
|
||||
else
|
||||
result->Assign(i, 0, this);
|
||||
result->Assign(i, 0);
|
||||
}
|
||||
|
||||
Unref(v1);
|
||||
|
@ -2334,10 +2332,9 @@ Val* CondExpr::Eval(Frame* f) const
|
|||
if ( local_cond )
|
||||
result->Assign(i,
|
||||
local_cond->IsZero() ?
|
||||
b->Lookup(i) : a->Lookup(i),
|
||||
this);
|
||||
b->Lookup(i) : a->Lookup(i));
|
||||
else
|
||||
result->Assign(i, 0, this);
|
||||
result->Assign(i, 0);
|
||||
}
|
||||
|
||||
return result;
|
||||
|
@ -2507,15 +2504,27 @@ bool AssignExpr::TypeCheck(attr_list* attrs)
|
|||
attr_copy->append((*attrs)[i]);
|
||||
}
|
||||
|
||||
op2 = new TableConstructorExpr(op2->AsListExpr(), attr_copy);
|
||||
if ( op1->Type()->IsSet() )
|
||||
op2 = new SetConstructorExpr(op2->AsListExpr(), attr_copy);
|
||||
else
|
||||
op2 = new TableConstructorExpr(op2->AsListExpr(), attr_copy);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
if ( bt1 == TYPE_VECTOR && bt2 == bt1 &&
|
||||
op2->Type()->AsVectorType()->IsUnspecifiedVector() )
|
||||
if ( bt1 == TYPE_VECTOR )
|
||||
{
|
||||
op2 = new VectorCoerceExpr(op2, op1->Type()->AsVectorType());
|
||||
return true;
|
||||
if ( bt2 == bt1 && op2->Type()->AsVectorType()->IsUnspecifiedVector() )
|
||||
{
|
||||
op2 = new VectorCoerceExpr(op2, op1->Type()->AsVectorType());
|
||||
return true;
|
||||
}
|
||||
|
||||
if ( op2->Tag() == EXPR_LIST )
|
||||
{
|
||||
op2 = new VectorConstructorExpr(op2->AsListExpr());
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
if ( op1->Type()->Tag() == TYPE_RECORD &&
|
||||
|
@ -2961,7 +2970,7 @@ Val* IndexExpr::Eval(Frame* f) const
|
|||
for ( unsigned int i = 0; i < v_v2->Size(); ++i )
|
||||
{
|
||||
if ( v_v2->Lookup(i)->AsBool() )
|
||||
v_result->Assign(v_result->Size() + 1, v_v1->Lookup(i), this);
|
||||
v_result->Assign(v_result->Size() + 1, v_v1->Lookup(i));
|
||||
}
|
||||
}
|
||||
else
|
||||
|
@ -2971,7 +2980,7 @@ Val* IndexExpr::Eval(Frame* f) const
|
|||
// Probably only do this if *all* are negative.
|
||||
v_result->Resize(v_v2->Size());
|
||||
for ( unsigned int i = 0; i < v_v2->Size(); ++i )
|
||||
v_result->Assign(i, v_v1->Lookup(v_v2->Lookup(i)->CoerceToInt()), this);
|
||||
v_result->Assign(i, v_v1->Lookup(v_v2->Lookup(i)->CoerceToInt()));
|
||||
}
|
||||
}
|
||||
else
|
||||
|
@ -3048,7 +3057,7 @@ void IndexExpr::Assign(Frame* f, Val* v, Opcode op)
|
|||
|
||||
switch ( v1->Type()->Tag() ) {
|
||||
case TYPE_VECTOR:
|
||||
if ( ! v1->AsVectorVal()->Assign(v2, v, this, op) )
|
||||
if ( ! v1->AsVectorVal()->Assign(v2, v, op) )
|
||||
Internal("assignment failed");
|
||||
break;
|
||||
|
||||
|
@ -3620,7 +3629,7 @@ Val* VectorConstructorExpr::Eval(Frame* f) const
|
|||
{
|
||||
Expr* e = exprs[i];
|
||||
Val* v = e->Eval(f);
|
||||
if ( ! vec->Assign(i, v, e) )
|
||||
if ( ! vec->Assign(i, v) )
|
||||
{
|
||||
Error(fmt("type mismatch at index %d", i), e);
|
||||
return 0;
|
||||
|
@ -3644,7 +3653,7 @@ Val* VectorConstructorExpr::InitVal(const BroType* t, Val* aggr) const
|
|||
Expr* e = exprs[i];
|
||||
Val* v = check_and_promote(e->Eval(0), t->YieldType(), 1);
|
||||
|
||||
if ( ! v || ! vec->Assign(i, v, e) )
|
||||
if ( ! v || ! vec->Assign(i, v) )
|
||||
{
|
||||
Error(fmt("initialization type mismatch at index %d", i), e);
|
||||
return 0;
|
||||
|
@ -3865,9 +3874,9 @@ Val* ArithCoerceExpr::Fold(Val* v) const
|
|||
{
|
||||
Val* elt = vv->Lookup(i);
|
||||
if ( elt )
|
||||
result->Assign(i, FoldSingleVal(elt, t), this);
|
||||
result->Assign(i, FoldSingleVal(elt, t));
|
||||
else
|
||||
result->Assign(i, 0, this);
|
||||
result->Assign(i, 0);
|
||||
}
|
||||
|
||||
return result;
|
||||
|
@ -4639,12 +4648,16 @@ Val* CallExpr::Eval(Frame* f) const
|
|||
{
|
||||
const ::Func* func = func_val->AsFunc();
|
||||
calling_expr = this;
|
||||
const CallExpr* current_call = f ? f->GetCall() : 0;
|
||||
|
||||
if ( f )
|
||||
f->SetCall(this);
|
||||
|
||||
ret = func->Call(v, f); // No try/catch here; we pass exceptions upstream.
|
||||
|
||||
if ( f )
|
||||
f->ClearCall();
|
||||
f->SetCall(current_call);
|
||||
|
||||
// Don't Unref() the arguments, as Func::Call already did that.
|
||||
delete v;
|
||||
|
||||
|
@ -4971,14 +4984,22 @@ Val* ListExpr::InitVal(const BroType* t, Val* aggr) const
|
|||
{
|
||||
ListVal* v = new ListVal(TYPE_ANY);
|
||||
|
||||
const type_list* tl = type->AsTypeList()->Types();
|
||||
if ( exprs.length() != tl->length() )
|
||||
{
|
||||
Error("index mismatch", t);
|
||||
return 0;
|
||||
}
|
||||
|
||||
loop_over_list(exprs, i)
|
||||
{
|
||||
Val* vi = exprs[i]->InitVal(t, 0);
|
||||
Val* vi = exprs[i]->InitVal((*tl)[i], 0);
|
||||
if ( ! vi )
|
||||
{
|
||||
Unref(v);
|
||||
return 0;
|
||||
}
|
||||
|
||||
v->Append(vi);
|
||||
}
|
||||
return v;
|
||||
|
@ -5042,7 +5063,7 @@ Val* ListExpr::InitVal(const BroType* t, Val* aggr) const
|
|||
Expr* e = exprs[i];
|
||||
check_and_promote_expr(e, vec->Type()->AsVectorType()->YieldType());
|
||||
Val* v = e->Eval(0);
|
||||
if ( ! vec->Assign(i, v, e) )
|
||||
if ( ! vec->Assign(i, v) )
|
||||
{
|
||||
e->Error(fmt("type mismatch at index %d", i));
|
||||
return 0;
|
||||
|
|
|
@ -3,34 +3,24 @@
|
|||
#include "file_analysis/Manager.h"
|
||||
#include "FileAnalyzer.h"
|
||||
#include "Reporter.h"
|
||||
#include "util.h"
|
||||
|
||||
magic_t File_Analyzer::magic = 0;
|
||||
magic_t File_Analyzer::magic_mime = 0;
|
||||
|
||||
File_Analyzer::File_Analyzer(Connection* conn)
|
||||
: TCP_ApplicationAnalyzer(AnalyzerTag::File, conn)
|
||||
File_Analyzer::File_Analyzer(AnalyzerTag::Tag tag, Connection* conn)
|
||||
: TCP_ApplicationAnalyzer(tag, conn)
|
||||
{
|
||||
buffer_len = 0;
|
||||
|
||||
if ( ! magic )
|
||||
{
|
||||
InitMagic(&magic, MAGIC_NONE);
|
||||
InitMagic(&magic_mime, MAGIC_MIME);
|
||||
}
|
||||
|
||||
char op[256], rp[256];
|
||||
modp_ulitoa10(ntohs(conn->OrigPort()), op);
|
||||
modp_ulitoa10(ntohs(conn->RespPort()), rp);
|
||||
unique_file = "TCPFile " + conn->OrigAddr().AsString() + ":" + op + "->" +
|
||||
conn->RespAddr().AsString() + ":" + rp;
|
||||
bro_init_magic(&magic, MAGIC_NONE);
|
||||
bro_init_magic(&magic_mime, MAGIC_MIME);
|
||||
}
|
||||
|
||||
void File_Analyzer::DeliverStream(int len, const u_char* data, bool orig)
|
||||
{
|
||||
TCP_ApplicationAnalyzer::DeliverStream(len, data, orig);
|
||||
|
||||
file_mgr->DataIn(unique_file, data, len, Conn());
|
||||
|
||||
int n = min(len, BUFFER_SIZE - buffer_len);
|
||||
|
||||
if ( n )
|
||||
|
@ -47,16 +37,12 @@ void File_Analyzer::DeliverStream(int len, const u_char* data, bool orig)
|
|||
void File_Analyzer::Undelivered(int seq, int len, bool orig)
|
||||
{
|
||||
TCP_ApplicationAnalyzer::Undelivered(seq, len, orig);
|
||||
|
||||
file_mgr->Gap(unique_file, seq, len);
|
||||
}
|
||||
|
||||
void File_Analyzer::Done()
|
||||
{
|
||||
TCP_ApplicationAnalyzer::Done();
|
||||
|
||||
file_mgr->EndOfFile(unique_file, Conn());
|
||||
|
||||
if ( buffer_len && buffer_len != BUFFER_SIZE )
|
||||
Identify();
|
||||
}
|
||||
|
@ -67,10 +53,10 @@ void File_Analyzer::Identify()
|
|||
const char* mime = 0;
|
||||
|
||||
if ( magic )
|
||||
descr = magic_buffer(magic, buffer, buffer_len);
|
||||
descr = bro_magic_buffer(magic, buffer, buffer_len);
|
||||
|
||||
if ( magic_mime )
|
||||
mime = magic_buffer(magic_mime, buffer, buffer_len);
|
||||
mime = bro_magic_buffer(magic_mime, buffer, buffer_len);
|
||||
|
||||
val_list* vl = new val_list;
|
||||
vl->append(BuildConnVal());
|
||||
|
@ -80,17 +66,48 @@ void File_Analyzer::Identify()
|
|||
ConnectionEvent(file_transferred, vl);
|
||||
}
|
||||
|
||||
void File_Analyzer::InitMagic(magic_t* magic, int flags)
|
||||
IRC_Data::IRC_Data(Connection* conn)
|
||||
: File_Analyzer(AnalyzerTag::IRC_Data, conn)
|
||||
{
|
||||
*magic = magic_open(flags);
|
||||
|
||||
if ( ! *magic )
|
||||
reporter->Error("can't init libmagic: %s", magic_error(*magic));
|
||||
|
||||
else if ( magic_load(*magic, 0) < 0 )
|
||||
{
|
||||
reporter->Error("can't load magic file: %s", magic_error(*magic));
|
||||
magic_close(*magic);
|
||||
*magic = 0;
|
||||
}
|
||||
}
|
||||
|
||||
void IRC_Data::Done()
|
||||
{
|
||||
File_Analyzer::Done();
|
||||
file_mgr->EndOfFile(GetTag(), Conn());
|
||||
}
|
||||
|
||||
void IRC_Data::DeliverStream(int len, const u_char* data, bool orig)
|
||||
{
|
||||
File_Analyzer::DeliverStream(len, data, orig);
|
||||
file_mgr->DataIn(data, len, GetTag(), Conn(), orig);
|
||||
}
|
||||
|
||||
void IRC_Data::Undelivered(int seq, int len, bool orig)
|
||||
{
|
||||
File_Analyzer::Undelivered(seq, len, orig);
|
||||
file_mgr->Gap(seq, len, GetTag(), Conn(), orig);
|
||||
}
|
||||
|
||||
FTP_Data::FTP_Data(Connection* conn)
|
||||
: File_Analyzer(AnalyzerTag::FTP_Data, conn)
|
||||
{
|
||||
}
|
||||
|
||||
void FTP_Data::Done()
|
||||
{
|
||||
File_Analyzer::Done();
|
||||
file_mgr->EndOfFile(GetTag(), Conn());
|
||||
}
|
||||
|
||||
void FTP_Data::DeliverStream(int len, const u_char* data, bool orig)
|
||||
{
|
||||
File_Analyzer::DeliverStream(len, data, orig);
|
||||
file_mgr->DataIn(data, len, GetTag(), Conn(), orig);
|
||||
}
|
||||
|
||||
void FTP_Data::Undelivered(int seq, int len, bool orig)
|
||||
{
|
||||
File_Analyzer::Undelivered(seq, len, orig);
|
||||
file_mgr->Gap(seq, len, GetTag(), Conn(), orig);
|
||||
}
|
||||
|
|
|
@ -10,7 +10,7 @@
|
|||
|
||||
class File_Analyzer : public TCP_ApplicationAnalyzer {
|
||||
public:
|
||||
File_Analyzer(Connection* conn);
|
||||
File_Analyzer(AnalyzerTag::Tag tag, Connection* conn);
|
||||
|
||||
virtual void Done();
|
||||
|
||||
|
@ -19,7 +19,7 @@ public:
|
|||
void Undelivered(int seq, int len, bool orig);
|
||||
|
||||
static Analyzer* InstantiateAnalyzer(Connection* conn)
|
||||
{ return new File_Analyzer(conn); }
|
||||
{ return new File_Analyzer(AnalyzerTag::File, conn); }
|
||||
|
||||
static bool Available() { return file_transferred; }
|
||||
|
||||
|
@ -32,12 +32,42 @@ protected:
|
|||
char buffer[BUFFER_SIZE];
|
||||
int buffer_len;
|
||||
|
||||
static void InitMagic(magic_t* magic, int flags);
|
||||
|
||||
static magic_t magic;
|
||||
static magic_t magic_mime;
|
||||
};
|
||||
|
||||
string unique_file;
|
||||
class IRC_Data : public File_Analyzer {
|
||||
public:
|
||||
|
||||
IRC_Data(Connection* conn);
|
||||
|
||||
virtual void Done();
|
||||
|
||||
virtual void DeliverStream(int len, const u_char* data, bool orig);
|
||||
|
||||
void Undelivered(int seq, int len, bool orig);
|
||||
|
||||
static Analyzer* InstantiateAnalyzer(Connection* conn)
|
||||
{ return new IRC_Data(conn); }
|
||||
|
||||
static bool Available() { return true; }
|
||||
};
|
||||
|
||||
class FTP_Data : public File_Analyzer {
|
||||
public:
|
||||
|
||||
FTP_Data(Connection* conn);
|
||||
|
||||
virtual void Done();
|
||||
|
||||
virtual void DeliverStream(int len, const u_char* data, bool orig);
|
||||
|
||||
void Undelivered(int seq, int len, bool orig);
|
||||
|
||||
static Analyzer* InstantiateAnalyzer(Connection* conn)
|
||||
{ return new FTP_Data(conn); }
|
||||
|
||||
static bool Available() { return true; }
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
|
@ -100,6 +100,13 @@ void FragReassembler::AddFragment(double t, const IP_Hdr* ip, const u_char* pkt)
|
|||
int offset = ip->FragOffset();
|
||||
int len = ip->TotalLen();
|
||||
int hdr_len = ip->HdrLen();
|
||||
|
||||
if ( len < hdr_len )
|
||||
{
|
||||
s->Weird("fragment_protocol_inconsistency", ip);
|
||||
return;
|
||||
}
|
||||
|
||||
int upper_seq = offset + len - hdr_len;
|
||||
|
||||
if ( ! offset )
|
||||
|
|
|
@ -87,8 +87,11 @@ Frame* Frame::Clone()
|
|||
|
||||
void Frame::SetTrigger(Trigger* arg_trigger)
|
||||
{
|
||||
ClearTrigger();
|
||||
|
||||
if ( arg_trigger )
|
||||
Ref(arg_trigger);
|
||||
|
||||
trigger = arg_trigger;
|
||||
}
|
||||
|
||||
|
|
84
src/Func.cc
84
src/Func.cc
|
@ -54,13 +54,13 @@ bool did_builtin_init = false;
|
|||
|
||||
vector<Func*> Func::unique_ids;
|
||||
|
||||
Func::Func() : scope(0), id(0), return_value(0)
|
||||
Func::Func() : scope(0), type(0)
|
||||
{
|
||||
unique_id = unique_ids.size();
|
||||
unique_ids.push_back(this);
|
||||
}
|
||||
|
||||
Func::Func(Kind arg_kind) : scope(0), kind(arg_kind), id(0), return_value(0)
|
||||
Func::Func(Kind arg_kind) : scope(0), kind(arg_kind), type(0)
|
||||
{
|
||||
unique_id = unique_ids.size();
|
||||
unique_ids.push_back(this);
|
||||
|
@ -68,6 +68,7 @@ Func::Func(Kind arg_kind) : scope(0), kind(arg_kind), id(0), return_value(0)
|
|||
|
||||
Func::~Func()
|
||||
{
|
||||
Unref(type);
|
||||
}
|
||||
|
||||
void Func::AddBody(Stmt* /* new_body */, id_list* /* new_inits */,
|
||||
|
@ -129,6 +130,12 @@ bool Func::DoSerialize(SerialInfo* info) const
|
|||
if ( ! SERIALIZE(char(kind) ) )
|
||||
return false;
|
||||
|
||||
if ( ! type->Serialize(info) )
|
||||
return false;
|
||||
|
||||
if ( ! SERIALIZE(Name()) )
|
||||
return false;
|
||||
|
||||
// We don't serialize scope as only global functions are considered here
|
||||
// anyway.
|
||||
return true;
|
||||
|
@ -160,12 +167,25 @@ bool Func::DoUnserialize(UnserialInfo* info)
|
|||
return false;
|
||||
|
||||
kind = (Kind) c;
|
||||
|
||||
type = BroType::Unserialize(info);
|
||||
if ( ! type )
|
||||
return false;
|
||||
|
||||
const char* n;
|
||||
if ( ! UNSERIALIZE_STR(&n, 0) )
|
||||
return false;
|
||||
|
||||
name = n;
|
||||
delete [] n;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void Func::DescribeDebug(ODesc* d, const val_list* args) const
|
||||
{
|
||||
id->Describe(d);
|
||||
d->Add(Name());
|
||||
|
||||
RecordType* func_args = FType()->Args();
|
||||
|
||||
if ( args )
|
||||
|
@ -196,21 +216,6 @@ void Func::DescribeDebug(ODesc* d, const val_list* args) const
|
|||
}
|
||||
}
|
||||
|
||||
void Func::SetID(ID *arg_id)
|
||||
{
|
||||
id = arg_id;
|
||||
|
||||
return_value =
|
||||
new ID(string(string(id->Name()) + "_returnvalue").c_str(),
|
||||
SCOPE_FUNCTION, false);
|
||||
return_value->SetType(FType()->YieldType()->Ref());
|
||||
}
|
||||
|
||||
ID* Func::GetReturnValueID() const
|
||||
{
|
||||
return return_value;
|
||||
}
|
||||
|
||||
TraversalCode Func::Traverse(TraversalCallback* cb) const
|
||||
{
|
||||
// FIXME: Make a fake scope for builtins?
|
||||
|
@ -226,12 +231,6 @@ TraversalCode Func::Traverse(TraversalCallback* cb) const
|
|||
tc = scope->Traverse(cb);
|
||||
HANDLE_TC_STMT_PRE(tc);
|
||||
|
||||
if ( GetReturnValueID() )
|
||||
{
|
||||
tc = GetReturnValueID()->Traverse(cb);
|
||||
HANDLE_TC_STMT_PRE(tc);
|
||||
}
|
||||
|
||||
for ( unsigned int i = 0; i < bodies.size(); ++i )
|
||||
{
|
||||
tc = bodies[i].stmts->Traverse(cb);
|
||||
|
@ -249,7 +248,8 @@ BroFunc::BroFunc(ID* arg_id, Stmt* arg_body, id_list* aggr_inits,
|
|||
int arg_frame_size, int priority)
|
||||
: Func(BRO_FUNC)
|
||||
{
|
||||
id = arg_id;
|
||||
name = arg_id->Name();
|
||||
type = arg_id->Type()->Ref();
|
||||
frame_size = arg_frame_size;
|
||||
|
||||
if ( arg_body )
|
||||
|
@ -263,7 +263,6 @@ BroFunc::BroFunc(ID* arg_id, Stmt* arg_body, id_list* aggr_inits,
|
|||
|
||||
BroFunc::~BroFunc()
|
||||
{
|
||||
Unref(id);
|
||||
for ( unsigned int i = 0; i < bodies.size(); ++i )
|
||||
Unref(bodies[i].stmts);
|
||||
}
|
||||
|
@ -378,7 +377,8 @@ Val* BroFunc::Call(val_list* args, Frame* parent) const
|
|||
(flow != FLOW_RETURN /* we fell off the end */ ||
|
||||
! result /* explicit return with no result */) &&
|
||||
! f->HasDelayed() )
|
||||
reporter->Warning("non-void function returns without a value: %s", id->Name());
|
||||
reporter->Warning("non-void function returns without a value: %s",
|
||||
Name());
|
||||
|
||||
if ( result && g_trace_state.DoTrace() )
|
||||
{
|
||||
|
@ -421,8 +421,7 @@ void BroFunc::AddBody(Stmt* new_body, id_list* new_inits, int new_frame_size,
|
|||
|
||||
void BroFunc::Describe(ODesc* d) const
|
||||
{
|
||||
if ( id )
|
||||
id->Describe(d);
|
||||
d->Add(Name());
|
||||
|
||||
d->NL();
|
||||
d->AddCount(frame_size);
|
||||
|
@ -450,14 +449,14 @@ IMPLEMENT_SERIAL(BroFunc, SER_BRO_FUNC);
|
|||
bool BroFunc::DoSerialize(SerialInfo* info) const
|
||||
{
|
||||
DO_SERIALIZE(SER_BRO_FUNC, Func);
|
||||
return id->Serialize(info) && SERIALIZE(frame_size);
|
||||
return SERIALIZE(frame_size);
|
||||
}
|
||||
|
||||
bool BroFunc::DoUnserialize(UnserialInfo* info)
|
||||
{
|
||||
DO_UNSERIALIZE(Func);
|
||||
id = ID::Unserialize(info);
|
||||
return id && UNSERIALIZE(&frame_size);
|
||||
|
||||
return UNSERIALIZE(&frame_size);
|
||||
}
|
||||
|
||||
BuiltinFunc::BuiltinFunc(built_in_func arg_func, const char* arg_name,
|
||||
|
@ -465,15 +464,16 @@ BuiltinFunc::BuiltinFunc(built_in_func arg_func, const char* arg_name,
|
|||
: Func(BUILTIN_FUNC)
|
||||
{
|
||||
func = arg_func;
|
||||
name = copy_string(make_full_var_name(GLOBAL_MODULE_NAME, arg_name).c_str());
|
||||
name = make_full_var_name(GLOBAL_MODULE_NAME, arg_name);
|
||||
is_pure = arg_is_pure;
|
||||
|
||||
id = lookup_ID(name, GLOBAL_MODULE_NAME, false);
|
||||
ID* id = lookup_ID(Name(), GLOBAL_MODULE_NAME, false);
|
||||
if ( ! id )
|
||||
reporter->InternalError("built-in function %s missing", name);
|
||||
reporter->InternalError("built-in function %s missing", Name());
|
||||
if ( id->HasVal() )
|
||||
reporter->InternalError("built-in function %s multiply defined", name);
|
||||
reporter->InternalError("built-in function %s multiply defined", Name());
|
||||
|
||||
type = id->Type()->Ref();
|
||||
id->SetVal(new Val(this));
|
||||
}
|
||||
|
||||
|
@ -491,7 +491,7 @@ Val* BuiltinFunc::Call(val_list* args, Frame* parent) const
|
|||
#ifdef PROFILE_BRO_FUNCTIONS
|
||||
DEBUG_MSG("Function: %s\n", Name());
|
||||
#endif
|
||||
SegmentProfiler(segment_logger, name);
|
||||
SegmentProfiler(segment_logger, Name());
|
||||
|
||||
if ( sample_logger )
|
||||
sample_logger->FunctionSeen(this);
|
||||
|
@ -522,8 +522,7 @@ Val* BuiltinFunc::Call(val_list* args, Frame* parent) const
|
|||
|
||||
void BuiltinFunc::Describe(ODesc* d) const
|
||||
{
|
||||
if ( id )
|
||||
id->Describe(d);
|
||||
d->Add(Name());
|
||||
d->AddCount(is_pure);
|
||||
}
|
||||
|
||||
|
@ -532,16 +531,13 @@ IMPLEMENT_SERIAL(BuiltinFunc, SER_BUILTIN_FUNC);
|
|||
bool BuiltinFunc::DoSerialize(SerialInfo* info) const
|
||||
{
|
||||
DO_SERIALIZE(SER_BUILTIN_FUNC, Func);
|
||||
|
||||
// We ignore the ID. Func::Serialize() will rebind us anyway.
|
||||
return SERIALIZE(name);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool BuiltinFunc::DoUnserialize(UnserialInfo* info)
|
||||
{
|
||||
DO_UNSERIALIZE(Func);
|
||||
id = 0;
|
||||
return UNSERIALIZE_STR(&name, 0);
|
||||
return true;
|
||||
}
|
||||
|
||||
void builtin_error(const char* msg, BroObj* arg)
|
||||
|
|
17
src/Func.h
17
src/Func.h
|
@ -47,15 +47,11 @@ public:
|
|||
virtual void SetScope(Scope* newscope) { scope = newscope; }
|
||||
virtual Scope* GetScope() const { return scope; }
|
||||
|
||||
virtual FuncType* FType() const
|
||||
{
|
||||
return (FuncType*) id->Type()->AsFuncType();
|
||||
}
|
||||
virtual FuncType* FType() const { return type->AsFuncType(); }
|
||||
|
||||
Kind GetKind() const { return kind; }
|
||||
|
||||
const ID* GetID() const { return id; }
|
||||
void SetID(ID *arg_id);
|
||||
const char* Name() const { return name.c_str(); }
|
||||
|
||||
virtual void Describe(ODesc* d) const = 0;
|
||||
virtual void DescribeDebug(ODesc* d, const val_list* args) const;
|
||||
|
@ -64,7 +60,6 @@ public:
|
|||
bool Serialize(SerialInfo* info) const;
|
||||
static Func* Unserialize(UnserialInfo* info);
|
||||
|
||||
ID* GetReturnValueID() const;
|
||||
virtual TraversalCode Traverse(TraversalCallback* cb) const;
|
||||
|
||||
uint32 GetUniqueFuncID() const { return unique_id; }
|
||||
|
@ -79,8 +74,8 @@ protected:
|
|||
vector<Body> bodies;
|
||||
Scope* scope;
|
||||
Kind kind;
|
||||
ID* id;
|
||||
ID* return_value;
|
||||
BroType* type;
|
||||
string name;
|
||||
uint32 unique_id;
|
||||
static vector<Func*> unique_ids;
|
||||
};
|
||||
|
@ -119,18 +114,16 @@ public:
|
|||
|
||||
int IsPure() const;
|
||||
Val* Call(val_list* args, Frame* parent) const;
|
||||
const char* Name() const { return name; }
|
||||
built_in_func TheFunc() const { return func; }
|
||||
|
||||
void Describe(ODesc* d) const;
|
||||
|
||||
protected:
|
||||
BuiltinFunc() { func = 0; name = 0; is_pure = 0; }
|
||||
BuiltinFunc() { func = 0; is_pure = 0; }
|
||||
|
||||
DECLARE_SERIAL(BuiltinFunc);
|
||||
|
||||
built_in_func func;
|
||||
const char* name;
|
||||
int is_pure;
|
||||
};
|
||||
|
||||
|
|
81
src/HTTP.cc
81
src/HTTP.cc
|
@ -12,6 +12,7 @@
|
|||
#include "HTTP.h"
|
||||
#include "Event.h"
|
||||
#include "MIME.h"
|
||||
#include "file_analysis/Manager.h"
|
||||
|
||||
const bool DEBUG_http = false;
|
||||
|
||||
|
@ -41,9 +42,13 @@ HTTP_Entity::HTTP_Entity(HTTP_Message *arg_message, MIME_Entity* parent_entity,
|
|||
expect_data_length = 0;
|
||||
body_length = 0;
|
||||
header_length = 0;
|
||||
deliver_body = (http_entity_data != 0);
|
||||
deliver_body = true;
|
||||
encoding = IDENTITY;
|
||||
zip = 0;
|
||||
is_partial_content = false;
|
||||
offset = 0;
|
||||
instance_length = -1; // unspecified
|
||||
send_size = true;
|
||||
}
|
||||
|
||||
void HTTP_Entity::EndOfData()
|
||||
|
@ -233,6 +238,11 @@ int HTTP_Entity::Undelivered(int64_t len)
|
|||
if ( end_of_data && in_header )
|
||||
return 0;
|
||||
|
||||
file_mgr->Gap(body_length, len,
|
||||
http_message->MyHTTP_Analyzer()->GetTag(),
|
||||
http_message->MyHTTP_Analyzer()->Conn(),
|
||||
http_message->IsOrig());
|
||||
|
||||
if ( chunked_transfer_state != NON_CHUNKED_TRANSFER )
|
||||
{
|
||||
if ( chunked_transfer_state == EXPECT_CHUNK_DATA &&
|
||||
|
@ -277,6 +287,38 @@ void HTTP_Entity::SubmitData(int len, const char* buf)
|
|||
{
|
||||
if ( deliver_body )
|
||||
MIME_Entity::SubmitData(len, buf);
|
||||
|
||||
if ( send_size && ( encoding == GZIP || encoding == DEFLATE ) )
|
||||
// Auto-decompress in DeliverBody invalidates sizes derived from headers
|
||||
send_size = false;
|
||||
|
||||
if ( is_partial_content )
|
||||
{
|
||||
if ( send_size && instance_length > 0 )
|
||||
file_mgr->SetSize(instance_length,
|
||||
http_message->MyHTTP_Analyzer()->GetTag(),
|
||||
http_message->MyHTTP_Analyzer()->Conn(),
|
||||
http_message->IsOrig());
|
||||
file_mgr->DataIn(reinterpret_cast<const u_char*>(buf), len, offset,
|
||||
http_message->MyHTTP_Analyzer()->GetTag(),
|
||||
http_message->MyHTTP_Analyzer()->Conn(),
|
||||
http_message->IsOrig());
|
||||
offset += len;
|
||||
}
|
||||
else
|
||||
{
|
||||
if ( send_size && content_length > 0 )
|
||||
file_mgr->SetSize(content_length,
|
||||
http_message->MyHTTP_Analyzer()->GetTag(),
|
||||
http_message->MyHTTP_Analyzer()->Conn(),
|
||||
http_message->IsOrig());
|
||||
file_mgr->DataIn(reinterpret_cast<const u_char*>(buf), len,
|
||||
http_message->MyHTTP_Analyzer()->GetTag(),
|
||||
http_message->MyHTTP_Analyzer()->Conn(),
|
||||
http_message->IsOrig());
|
||||
}
|
||||
|
||||
send_size = false;
|
||||
}
|
||||
|
||||
void HTTP_Entity::SetPlainDelivery(int64_t length)
|
||||
|
@ -307,9 +349,7 @@ void HTTP_Entity::SubmitHeader(MIME_Header* h)
|
|||
}
|
||||
|
||||
// Figure out content-length for HTTP 206 Partial Content response
|
||||
// that uses multipart/byteranges content-type.
|
||||
else if ( strcasecmp_n(h->get_name(), "content-range") == 0 && Parent() &&
|
||||
Parent()->MIMEContentType() == CONTENT_TYPE_MULTIPART &&
|
||||
else if ( strcasecmp_n(h->get_name(), "content-range") == 0 &&
|
||||
http_message->MyHTTP_Analyzer()->HTTP_ReplyCode() == 206 )
|
||||
{
|
||||
data_chunk_t vt = h->get_value_token();
|
||||
|
@ -333,7 +373,7 @@ void HTTP_Entity::SubmitHeader(MIME_Header* h)
|
|||
}
|
||||
|
||||
string byte_range_resp_spec = byte_range.substr(0, p);
|
||||
string instance_length = byte_range.substr(p + 1);
|
||||
string instance_length_str = byte_range.substr(p + 1);
|
||||
|
||||
p = byte_range_resp_spec.find("-");
|
||||
if ( p == string::npos )
|
||||
|
@ -348,7 +388,7 @@ void HTTP_Entity::SubmitHeader(MIME_Header* h)
|
|||
if ( DEBUG_http )
|
||||
DEBUG_MSG("Parsed Content-Range: %s %s-%s/%s\n", byte_unit.c_str(),
|
||||
first_byte_pos.c_str(), last_byte_pos.c_str(),
|
||||
instance_length.c_str());
|
||||
instance_length_str.c_str());
|
||||
|
||||
int64_t f, l;
|
||||
atoi_n(first_byte_pos.size(), first_byte_pos.c_str(), 0, 10, f);
|
||||
|
@ -359,7 +399,18 @@ void HTTP_Entity::SubmitHeader(MIME_Header* h)
|
|||
DEBUG_MSG("Content-Range length = %"PRId64"\n", len);
|
||||
|
||||
if ( len > 0 )
|
||||
{
|
||||
if ( instance_length_str != "*" )
|
||||
{
|
||||
if ( ! atoi_n(instance_length_str.size(),
|
||||
instance_length_str.c_str(), 0, 10,
|
||||
instance_length) )
|
||||
instance_length = 0;
|
||||
}
|
||||
is_partial_content = true;
|
||||
offset = f;
|
||||
content_length = len;
|
||||
}
|
||||
else
|
||||
{
|
||||
http_message->Weird("HTTP_non_positive_content_range");
|
||||
|
@ -512,6 +563,11 @@ void HTTP_Message::Done(const int interrupted, const char* detail)
|
|||
// DEBUG_MSG("%.6f HTTP message done.\n", network_time);
|
||||
top_level->EndOfData();
|
||||
|
||||
if ( is_orig || MyHTTP_Analyzer()->HTTP_ReplyCode() != 206 )
|
||||
// multipart/byteranges may span multiple connections
|
||||
file_mgr->EndOfFile(MyHTTP_Analyzer()->GetTag(),
|
||||
MyHTTP_Analyzer()->Conn(), is_orig);
|
||||
|
||||
if ( http_message_done )
|
||||
{
|
||||
val_list* vl = new val_list;
|
||||
|
@ -586,6 +642,9 @@ void HTTP_Message::EndEntity(MIME_Entity* entity)
|
|||
// SubmitAllHeaders (through EndOfData).
|
||||
if ( entity == top_level )
|
||||
Done();
|
||||
else if ( is_orig || MyHTTP_Analyzer()->HTTP_ReplyCode() != 206 )
|
||||
file_mgr->EndOfFile(MyHTTP_Analyzer()->GetTag(),
|
||||
MyHTTP_Analyzer()->Conn(), is_orig);
|
||||
}
|
||||
|
||||
void HTTP_Message::SubmitHeader(MIME_Header* h)
|
||||
|
@ -641,9 +700,6 @@ void HTTP_Message::SubmitData(int len, const char* buf)
|
|||
|
||||
int HTTP_Message::RequestBuffer(int* plen, char** pbuf)
|
||||
{
|
||||
if ( ! http_entity_data )
|
||||
return 0;
|
||||
|
||||
if ( ! data_buffer )
|
||||
if ( ! InitBuffer(mime_segment_length) )
|
||||
return 0;
|
||||
|
@ -846,6 +902,13 @@ void HTTP_Analyzer::Done()
|
|||
Unref(unanswered_requests.front());
|
||||
unanswered_requests.pop();
|
||||
}
|
||||
|
||||
file_mgr->EndOfFile(GetTag(), Conn(), true);
|
||||
/* TODO: this might be nice to have, but reply code is cleared by now.
|
||||
if ( HTTP_ReplyCode() != 206 )
|
||||
// multipart/byteranges may span multiple connections
|
||||
file_mgr->EndOfFile(GetTag(), Conn(), false);
|
||||
*/
|
||||
}
|
||||
|
||||
void HTTP_Analyzer::DeliverStream(int len, const u_char* data, bool is_orig)
|
||||
|
|
|
@ -55,6 +55,10 @@ protected:
|
|||
int deliver_body;
|
||||
enum { IDENTITY, GZIP, COMPRESS, DEFLATE } encoding;
|
||||
ZIP_Analyzer* zip;
|
||||
bool is_partial_content;
|
||||
uint64_t offset;
|
||||
int64_t instance_length; // total length indicated by content-range
|
||||
bool send_size; // whether to send size indication to FAF
|
||||
|
||||
MIME_Entity* NewChildEntity() { return new HTTP_Entity(http_message, this, 1); }
|
||||
|
||||
|
|
|
@ -829,7 +829,7 @@ VectorVal* ICMP_Analyzer::BuildNDOptionsVal(int caplen, const u_char* data)
|
|||
data += length;
|
||||
caplen -= length;
|
||||
|
||||
vv->Assign(vv->Size(), rv, 0);
|
||||
vv->Assign(vv->Size(), rv);
|
||||
}
|
||||
|
||||
return vv;
|
||||
|
|
|
@ -63,7 +63,7 @@ static VectorVal* BuildOptionsVal(const u_char* data, int len)
|
|||
len -= opt->ip6o_len + off;
|
||||
}
|
||||
|
||||
vv->Assign(vv->Size(), rv, 0);
|
||||
vv->Assign(vv->Size(), rv);
|
||||
}
|
||||
|
||||
return vv;
|
||||
|
@ -626,7 +626,7 @@ VectorVal* IPv6_Hdr_Chain::BuildVal() const
|
|||
reporter->InternalError("IPv6_Hdr_Chain bad header %d", type);
|
||||
break;
|
||||
}
|
||||
rval->Assign(rval->Size(), ext_hdr, 0);
|
||||
rval->Assign(rval->Size(), ext_hdr);
|
||||
}
|
||||
|
||||
return rval;
|
||||
|
|
19
src/MIME.cc
19
src/MIME.cc
|
@ -5,6 +5,7 @@
|
|||
#include "Event.h"
|
||||
#include "Reporter.h"
|
||||
#include "digest.h"
|
||||
#include "file_analysis/Manager.h"
|
||||
|
||||
// Here are a few things to do:
|
||||
//
|
||||
|
@ -810,7 +811,7 @@ void MIME_Entity::StartDecodeBase64()
|
|||
if ( base64_decoder )
|
||||
reporter->InternalError("previous Base64 decoder not released!");
|
||||
|
||||
base64_decoder = new Base64Decoder(message->GetAnalyzer());
|
||||
base64_decoder = new Base64Converter(message->GetAnalyzer());
|
||||
}
|
||||
|
||||
void MIME_Entity::FinishDecodeBase64()
|
||||
|
@ -1019,6 +1020,8 @@ void MIME_Mail::Done()
|
|||
}
|
||||
|
||||
MIME_Message::Done();
|
||||
|
||||
file_mgr->EndOfFile(analyzer->GetTag(), analyzer->Conn());
|
||||
}
|
||||
|
||||
MIME_Mail::~MIME_Mail()
|
||||
|
@ -1030,6 +1033,7 @@ MIME_Mail::~MIME_Mail()
|
|||
|
||||
void MIME_Mail::BeginEntity(MIME_Entity* /* entity */)
|
||||
{
|
||||
cur_entity_len = 0;
|
||||
if ( mime_begin_entity )
|
||||
{
|
||||
val_list* vl = new val_list;
|
||||
|
@ -1065,6 +1069,8 @@ void MIME_Mail::EndEntity(MIME_Entity* /* entity */)
|
|||
vl->append(analyzer->BuildConnVal());
|
||||
analyzer->ConnectionEvent(mime_end_entity, vl);
|
||||
}
|
||||
|
||||
file_mgr->EndOfFile(analyzer->GetTag(), analyzer->Conn());
|
||||
}
|
||||
|
||||
void MIME_Mail::SubmitHeader(MIME_Header* h)
|
||||
|
@ -1122,6 +1128,11 @@ void MIME_Mail::SubmitData(int len, const char* buf)
|
|||
analyzer->ConnectionEvent(mime_segment_data, vl);
|
||||
}
|
||||
|
||||
// is_orig param not available, doesn't matter as long as it's consistent
|
||||
file_mgr->DataIn(reinterpret_cast<const u_char*>(buf), len,
|
||||
analyzer->GetTag(), analyzer->Conn(), false);
|
||||
cur_entity_len += len;
|
||||
|
||||
buffer_start = (buf + len) - (char*)data_buffer->Bytes();
|
||||
}
|
||||
|
||||
|
@ -1193,6 +1204,12 @@ void MIME_Mail::SubmitEvent(int event_type, const char* detail)
|
|||
}
|
||||
}
|
||||
|
||||
void MIME_Mail::Undelivered(int len)
|
||||
{
|
||||
// is_orig param not available, doesn't matter as long as it's consistent
|
||||
file_mgr->Gap(cur_entity_len, len, analyzer->GetTag(), analyzer->Conn(),
|
||||
false);
|
||||
}
|
||||
|
||||
int strcasecmp_n(data_chunk_t s, const char* t)
|
||||
{
|
||||
|
|
|
@ -131,7 +131,7 @@ protected:
|
|||
int GetDataBuffer();
|
||||
void DataOctet(char ch);
|
||||
void DataOctets(int len, const char* data);
|
||||
void SubmitData(int len, const char* buf);
|
||||
virtual void SubmitData(int len, const char* buf);
|
||||
|
||||
virtual void SubmitHeader(MIME_Header* h);
|
||||
// Submit all headers in member "headers".
|
||||
|
@ -163,7 +163,7 @@ protected:
|
|||
MIME_Entity* parent;
|
||||
MIME_Entity* current_child_entity;
|
||||
|
||||
Base64Decoder* base64_decoder;
|
||||
Base64Converter* base64_decoder;
|
||||
|
||||
int data_buf_length;
|
||||
char* data_buf_data;
|
||||
|
@ -238,6 +238,7 @@ public:
|
|||
int RequestBuffer(int* plen, char** pbuf);
|
||||
void SubmitAllData();
|
||||
void SubmitEvent(int event_type, const char* detail);
|
||||
void Undelivered(int len);
|
||||
|
||||
protected:
|
||||
int min_overlap_length;
|
||||
|
@ -252,6 +253,8 @@ protected:
|
|||
vector<const BroString*> all_content;
|
||||
|
||||
BroString* data_buffer;
|
||||
|
||||
uint64 cur_entity_len;
|
||||
};
|
||||
|
||||
|
||||
|
|
|
@ -599,7 +599,7 @@ RecordVal* NFS_Interp::nfs3_readdir_reply(bool isplus, const u_char*& buf,
|
|||
entry->Assign(4, nfs3_post_op_fh(buf,n));
|
||||
}
|
||||
|
||||
entries->Assign(pos, entry, 0);
|
||||
entries->Assign(pos, entry);
|
||||
pos++;
|
||||
}
|
||||
|
||||
|
|
|
@ -5,7 +5,6 @@
|
|||
#include "Var.h"
|
||||
#include "NetVar.h"
|
||||
|
||||
RecordType* gtpv1_hdr_type;
|
||||
RecordType* conn_id;
|
||||
RecordType* endpoint;
|
||||
RecordType* endpoint_stats;
|
||||
|
@ -311,7 +310,6 @@ void init_net_var()
|
|||
#include "reporter.bif.netvar_init"
|
||||
#include "file_analysis.bif.netvar_init"
|
||||
|
||||
gtpv1_hdr_type = internal_type("gtpv1_hdr")->AsRecordType();
|
||||
conn_id = internal_type("conn_id")->AsRecordType();
|
||||
endpoint = internal_type("endpoint")->AsRecordType();
|
||||
endpoint_stats = internal_type("endpoint_stats")->AsRecordType();
|
||||
|
|
|
@ -8,7 +8,6 @@
|
|||
#include "EventRegistry.h"
|
||||
#include "Stats.h"
|
||||
|
||||
extern RecordType* gtpv1_hdr_type;
|
||||
extern RecordType* conn_id;
|
||||
extern RecordType* endpoint;
|
||||
extern RecordType* endpoint_stats;
|
||||
|
|
|
@ -36,7 +36,7 @@ public:
|
|||
u_char key[MD5_DIGEST_LENGTH],
|
||||
u_char result[MD5_DIGEST_LENGTH]);
|
||||
|
||||
MD5Val() : HashVal(new OpaqueType("md5")) { }
|
||||
MD5Val() : HashVal(new OpaqueType("md5")) { Unref(Type()); }
|
||||
|
||||
protected:
|
||||
friend class Val;
|
||||
|
@ -55,7 +55,7 @@ class SHA1Val : public HashVal {
|
|||
public:
|
||||
static void digest(val_list& vlist, u_char result[SHA_DIGEST_LENGTH]);
|
||||
|
||||
SHA1Val() : HashVal(new OpaqueType("sha1")) { }
|
||||
SHA1Val() : HashVal(new OpaqueType("sha1")) { Unref(Type()); }
|
||||
|
||||
protected:
|
||||
friend class Val;
|
||||
|
@ -74,7 +74,7 @@ class SHA256Val : public HashVal {
|
|||
public:
|
||||
static void digest(val_list& vlist, u_char result[SHA256_DIGEST_LENGTH]);
|
||||
|
||||
SHA256Val() : HashVal(new OpaqueType("sha256")) { }
|
||||
SHA256Val() : HashVal(new OpaqueType("sha256")) { Unref(Type()); }
|
||||
|
||||
protected:
|
||||
friend class Val;
|
||||
|
|
|
@ -231,6 +231,15 @@ void PktSrc::Process()
|
|||
data += get_link_header_size(datalink);
|
||||
data += 4; // Skip the vlan header
|
||||
pkt_hdr_size = 0;
|
||||
|
||||
// Check for 802.1ah (Q-in-Q) containing IP.
|
||||
// Only do a second layer of vlan tag
|
||||
// stripping because there is no
|
||||
// specification that allows for deeper
|
||||
// nesting.
|
||||
if ( ((data[2] << 8) + data[3]) == 0x0800 )
|
||||
data += 4;
|
||||
|
||||
break;
|
||||
|
||||
// PPPoE carried over the ethernet frame.
|
||||
|
|
|
@ -496,7 +496,7 @@ static RE_Matcher* matcher_merge(const RE_Matcher* re1, const RE_Matcher* re2,
|
|||
safe_snprintf(merge_text, n, "(%s)%s(%s)", text1, merge_op, text2);
|
||||
|
||||
RE_Matcher* merge = new RE_Matcher(merge_text);
|
||||
delete merge_text;
|
||||
delete [] merge_text;
|
||||
|
||||
merge->Compile();
|
||||
|
||||
|
|
|
@ -85,9 +85,13 @@ void SMTP_Analyzer::Undelivered(int seq, int len, bool is_orig)
|
|||
Unexpected(is_orig, "content gap", buf_len, buf);
|
||||
|
||||
if ( state == SMTP_IN_DATA )
|
||||
{
|
||||
// Record the SMTP data gap and terminate the
|
||||
// ongoing mail transaction.
|
||||
if ( mail )
|
||||
mail->Undelivered(len);
|
||||
EndData();
|
||||
}
|
||||
|
||||
if ( line_after_gap )
|
||||
{
|
||||
|
|
|
@ -155,7 +155,7 @@ SerialObj* SerialObj::Unserialize(UnserialInfo* info, SerialType type)
|
|||
else
|
||||
{
|
||||
// Broccoli compatibility mode with 32bit pids.
|
||||
uint32 tmp;
|
||||
uint32 tmp = 0;
|
||||
result = UNSERIALIZE(&full_obj) && UNSERIALIZE(&tmp);
|
||||
pid = tmp;
|
||||
}
|
||||
|
|
|
@ -223,6 +223,12 @@ void NetSessions::NextPacket(double t, const struct pcap_pkthdr* hdr,
|
|||
// we look to see if what we have is consistent with an
|
||||
// IPv4 packet. If not, it's either ARP or IPv6 or weird.
|
||||
|
||||
if ( hdr_size > static_cast<int>(hdr->caplen) )
|
||||
{
|
||||
Weird("truncated_link_frame", hdr, pkt);
|
||||
return;
|
||||
}
|
||||
|
||||
uint32 caplen = hdr->caplen - hdr_size;
|
||||
if ( caplen < sizeof(struct ip) )
|
||||
{
|
||||
|
|
|
@ -96,12 +96,12 @@ VectorVal* BroSubstring::VecToPolicy(Vec* vec)
|
|||
align_val->Assign(0, new StringVal(new BroString(*align.string)));
|
||||
align_val->Assign(1, new Val(align.index, TYPE_COUNT));
|
||||
|
||||
aligns->Assign(j+1, align_val, 0);
|
||||
aligns->Assign(j+1, align_val);
|
||||
}
|
||||
|
||||
st_val->Assign(1, aligns);
|
||||
st_val->Assign(2, new Val(bst->IsNewAlignment(), TYPE_BOOL));
|
||||
result->Assign(i+1, st_val, 0);
|
||||
result->Assign(i+1, st_val);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
@ -371,7 +371,7 @@ void StateAccess::Replay()
|
|||
|
||||
CheckOld("index assign", target.id, op1.val, op3,
|
||||
v->AsVectorVal()->Lookup(index));
|
||||
v->AsVectorVal()->Assign(index, op2 ? op2->Ref() : 0, 0);
|
||||
v->AsVectorVal()->Assign(index, op2 ? op2->Ref() : 0);
|
||||
}
|
||||
|
||||
else
|
||||
|
@ -421,7 +421,7 @@ void StateAccess::Replay()
|
|||
Val* lookup_op1 = v->AsVectorVal()->Lookup(index);
|
||||
int delta = lookup_op1->CoerceToInt() + amount;
|
||||
Val* new_val = new Val(delta, t);
|
||||
v->AsVectorVal()->Assign(index, new_val, 0);
|
||||
v->AsVectorVal()->Assign(index, new_val);
|
||||
}
|
||||
|
||||
else
|
||||
|
@ -926,17 +926,22 @@ void NotifierRegistry::Register(ID* id, NotifierRegistry::Notifier* notifier)
|
|||
DBG_LOG(DBG_NOTIFIERS, "registering ID %s for notifier %s",
|
||||
id->Name(), notifier->Name());
|
||||
|
||||
Attr* attr = new Attr(ATTR_TRACKED);
|
||||
|
||||
if ( id->Attrs() )
|
||||
id->Attrs()->AddAttr(new Attr(ATTR_TRACKED));
|
||||
{
|
||||
if ( ! id->Attrs()->FindAttr(ATTR_TRACKED) )
|
||||
id->Attrs()->AddAttr(attr);
|
||||
}
|
||||
else
|
||||
{
|
||||
attr_list* a = new attr_list;
|
||||
Attr* attr = new Attr(ATTR_TRACKED);
|
||||
a->append(attr);
|
||||
id->SetAttrs(new Attributes(a, id->Type(), false));
|
||||
Unref(attr);
|
||||
}
|
||||
|
||||
Unref(attr);
|
||||
|
||||
NotifierMap::iterator i = ids.find(id->Name());
|
||||
|
||||
if ( i != ids.end() )
|
||||
|
@ -967,7 +972,9 @@ void NotifierRegistry::Unregister(ID* id, NotifierRegistry::Notifier* notifier)
|
|||
if ( i == ids.end() )
|
||||
return;
|
||||
|
||||
Attr* attr = id->Attrs()->FindAttr(ATTR_TRACKED);
|
||||
id->Attrs()->RemoveAttr(ATTR_TRACKED);
|
||||
Unref(attr);
|
||||
|
||||
NotifierSet* s = i->second;
|
||||
s->erase(notifier);
|
||||
|
|
|
@ -338,7 +338,7 @@ SampleLogger::~SampleLogger()
|
|||
|
||||
void SampleLogger::FunctionSeen(const Func* func)
|
||||
{
|
||||
load_samples->Assign(new StringVal(func->GetID()->Name()), 0);
|
||||
load_samples->Assign(new StringVal(func->Name()), 0);
|
||||
}
|
||||
|
||||
void SampleLogger::LocationSeen(const Location* loc)
|
||||
|
|
|
@ -23,6 +23,7 @@ enum TimerType {
|
|||
TIMER_CONN_STATUS_UPDATE,
|
||||
TIMER_DNS_EXPIRE,
|
||||
TIMER_FILE_ANALYSIS_INACTIVITY,
|
||||
TIMER_FILE_ANALYSIS_DRAIN,
|
||||
TIMER_FRAG,
|
||||
TIMER_INCREMENTAL_SEND,
|
||||
TIMER_INCREMENTAL_WRITE,
|
||||
|
|
|
@ -242,6 +242,7 @@ bool Trigger::Eval()
|
|||
|
||||
trigger->Cache(frame->GetCall(), v);
|
||||
trigger->Release();
|
||||
frame->ClearTrigger();
|
||||
}
|
||||
|
||||
Unref(v);
|
||||
|
@ -330,6 +331,7 @@ void Trigger::Timeout()
|
|||
#endif
|
||||
trigger->Cache(frame->GetCall(), v);
|
||||
trigger->Release();
|
||||
frame->ClearTrigger();
|
||||
}
|
||||
|
||||
Unref(v);
|
||||
|
@ -424,6 +426,12 @@ Val* Trigger::Lookup(const CallExpr* expr)
|
|||
return (i != cache.end()) ? i->second : 0;
|
||||
}
|
||||
|
||||
void Trigger::Disable()
|
||||
{
|
||||
UnregisterAll();
|
||||
disabled = true;
|
||||
}
|
||||
|
||||
const char* Trigger::Name() const
|
||||
{
|
||||
assert(location);
|
||||
|
|
|
@ -49,7 +49,7 @@ public:
|
|||
|
||||
// Disable this trigger completely. Needed because Unref'ing the trigger
|
||||
// may not immediately delete it as other references may still exist.
|
||||
void Disable() { disabled = true; }
|
||||
void Disable();
|
||||
|
||||
virtual void Describe(ODesc* d) const { d->Add("<trigger>"); }
|
||||
|
||||
|
@ -79,7 +79,6 @@ private:
|
|||
friend class TriggerTimer;
|
||||
|
||||
void Init();
|
||||
void DeleteTrigger();
|
||||
void Register(ID* id);
|
||||
void Register(Val* val);
|
||||
void UnregisterAll();
|
||||
|
|
|
@ -186,7 +186,7 @@ public:
|
|||
if ( conns )
|
||||
{
|
||||
for ( size_t i = 0; i < conns->size(); ++i )
|
||||
vv->Assign(i, (*conns)[i].GetRecordVal(), 0);
|
||||
vv->Assign(i, (*conns)[i].GetRecordVal());
|
||||
}
|
||||
|
||||
return vv;
|
||||
|
|
Some files were not shown because too many files have changed in this diff Show more
Loading…
Add table
Add a link
Reference in a new issue