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Adresses problems desciribed in
http://erlang.org/pipermail/erlang-bugs/2015-April/004891.html
http://erlang.org/pipermail/erlang-patches/2015-April/004766.html
The original patch also suggested the following fix.
However we need more information to be able to understand if
this is correct or not, and it does not have priority at the moment
for us to investigate.
@@ -816,7 +816,7 @@ next_node(D, {tree, Tree, {table_entry, _MibName}},
"~n RevOidSoFar: ~p"
"~n MibView: ~p", [size(Tree), Oid, RevOidSoFar, MibView]),
OidSoFar = lists:reverse(RevOidSoFar),
- case snmpa_acm:is_definitely_not_in_mib_view(OidSoFar, MibView) of
+ case snmpa_acm:is_definitely_not_in_mib_view(OidSoFar ++ Oid, MibView) of
true ->
?vdebug("next_node(tree,table_entry) -> not in mib view",[]),
false;
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Conflicts:
OTP_VERSION
erts/vsn.mk
lib/test_server/src/erl2html2.erl
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when snmpa_net_if gets externally killed
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snmpa_network_interface_filter functions
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bmk/snmp/snmp425_integration
Conflicts:
lib/snmp/src/app/snmp.erl
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Changed the default value for the Audit Trail Log
conversion to true. Also some cleanup.
OTP-11396
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bmk/snmp/snmp425_integration
Conflicts:
lib/snmp/doc/src/notes.xml
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When performing the AES encryption, invalid values for the
EngineBoots and EngineTime was used. The values of the local
agent was used, which would have produced some values if an
agent was actually running. If not it would have caused a crash.
OTP-11413
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bmk/snmp/snmp425_integration
Conflicts:
lib/snmp/doc/src/notes.xml
lib/snmp/src/app/snmp.erl
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It is now possible to request that the Audit Trail Log should
be blocked during conversion (log_to_txt or log_to_io). This
could be usefull when coverting a large log (when there is
a chance it may otherwise wrap during conversion).
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Also fixed copyright end date.
OTP-11352
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Add {db_init_error, create_db_and_dir} option to SNMP manager and
agent. This allows them to create any missing parent directories for
db_dir, rather than treating any missing directories as a fatal error.
The default for db_init_error, which is terminate, is unchanged.
Add create_db_and_dir to the documentation.
Add new tests to verify that using create_db_and_dir results in missing
parent directories being created.
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Improved the documentation of the loading and unloading
of MIBs (plural). also added functions for loading and
unloading a single mib.
OTP-11216
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bmk/snmp/snmp4241_integration/r16
Conflicts:
lib/snmp/doc/src/notes.xml
lib/snmp/src/app/snmp.appup.src
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Add utility functions for checking view masks.
Code cleanup, function renaming and comment fix (%% instead of %).
Also updated the mask check in the vacm config file check function.
Finally, release notes and some cosmetic changes to the agent
config-file(s) user guide chapter.
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The counter increment function in the local-db was incorrect.
It did not handle counter wrap correctly.
OTP-11192
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Dear all,
it's almost a year since I sent the patch attached to this e-mail, and I
just found out that I have not yet gotten a response to it.
I would consider this patch important because it fixes an issue with the
interpretation of data that might be critical for SNMPv3 operation. I
confirmed at that time that erlangs interpretation of
vacmViewTreeFamilyMask is indeed not interoperable with other SNMP
stacks.
Kind regards,
> > > the implementation of SNMP-VIEW-BASED-ACM.mib assumes that the input for
> > > vacmViewTreeFamilyMask is an OID consisting of 1's and 0's only to form
> > > the mask. However, the MIB states that the input should be a bitstring.
> > >
> > > The OID representation of the mask is useful in the code as it speeds up
> > > time-critical code paths when checking access permissions for EACH SNMP
> > > access. Reading/writing the view mask objects is less time-critical.
> > >
> > > Therefore, to fix the issue, convert between OID representation and
> > > bitstring when the vacmViewTreeFamilyMask objects are accessed. This is
> > > done by the patch attached to this e-mail.
>
>
> I'm very sorry for the troubles that I am causing but it seems that the
> previous version of the patch did more than it should: the OID-bitstring
> conversion was also applied to other tables in the same MIB on
> get/get-next requests.
>
> The version of the patch that is attached to this e-mail restricts the
> OID-bitstring conversion to vacmViewTreeFamilyMask alone.
--
Dr. Stefan Zegenhagen
arcutronix GmbH
Garbsener Landstr. 10
30419 Hannover
Germany
Tel: +49 511 277-2734
Fax: +49 511 277-2709
Email: [email protected]
Web: www.arcutronix.com
*Synchronize the Ethernet*
General Managers: Dipl. Ing. Juergen Schroeder, Dr. Josef Gfrerer -
Legal Form: GmbH, Registered office: Hannover, HRB 202442, Amtsgericht
Hannover; Ust-Id: DE257551767.
Please consider the environment before printing this message.
>From aa2acfb8a0b5ae05fc5ba982d78ee5607384a2be Mon Sep 17 00:00:00 2001
From: Stefan Zegenhagen <[email protected]>
Date: Wed, 1 Aug 2012 09:56:15 +0200
Subject: [PATCH] bugfix for vacmViewTreeFamilyMask
The vacmViewTreeFamilyMask is defined to be a bit string in the MIB, not
an OID. However, the MIB implementation assumed the latter, effectively
rendering all attempts to read/set masks via SNMP unsuccessful.
Since the mask is used in hot paths (e.g. access permission checks for
each SNMP operation, the OID representation of the mask has benefits
(e.g. faster processing). Therefore, convert the bitstring to/from its
OID representation when reading/setting any mask object.
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bmk/snmp/snmp424_integration/r16
Conflicts:
lib/snmp/doc/src/notes.xml
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