openldap-bugs January 2017

openldap-bugs@openldap.org

22 participants
55 discussions

Re: (ITS#8569) manpage for autogroup
by ebackes＠symas.com 16 Jan '17

16 Jan '17

This is a multi-part message in MIME format. --Multipart=_Mon__16_Jan_2017_13_04_30_-0800_xqWAijQoRs30vwBy Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Patch attached -- Emily Backes Symas Corporation ebackes(a)symas.com desk +1 650 963 7603 mobile +1 818 620 9879 --Multipart=_Mon__16_Jan_2017_13_04_30_-0800_xqWAijQoRs30vwBy Content-Type: text/x-diff; name="0001-Add-a-manpage-for-slapo-autogroup.patch" Content-Disposition: attachment; filename="0001-Add-a-manpage-for-slapo-autogroup.patch" Content-Transfer-Encoding: quoted-printable >From b5599bce0189aaae4631b196720b69e9d8b54639 Mon Sep 17 00:00:00 2001 From: Emily Backes <ebackes(a)symas.com> Date: Mon, 16 Jan 2017 12:59:52 -0800 Subject: [PATCH] Add a manpage for slapo-autogroup --- contrib/slapd-modules/autogroup/slapo-autogroup.5 | 102 ++++++++++++++++++= ++++ 1 file changed, 102 insertions(+) create mode 100644 contrib/slapd-modules/autogroup/slapo-autogroup.5 diff --git a/contrib/slapd-modules/autogroup/slapo-autogroup.5 b/contrib/sl= apd-modules/autogroup/slapo-autogroup.5 new file mode 100644 index 0000000000..1d68a55d8a --- /dev/null +++ b/contrib/slapd-modules/autogroup/slapo-autogroup.5 @@ -0,0 +1,102 @@ +.TH SLAPO-AUTOGROUP 5 "RELEASEDATE" "OpenLDAP LDVERSION" +.\" Copyright 1998-2017 \[u00A9] The OpenLDAP Foundation, All Rights Reser= ved. +.\" Portions Copyright \[u00A9] 2007 Micha=C5=82 Szulczy=C5=84ski. +.\" Copying restrictions apply. See the COPYRIGHT file. +.\" $OpenLDAP$ +.SH NAME +\FCslapo-autogroup\FT \- automatic updates of group memberships which meet= the +requirements of any filter contained in the group definition. +.SH SYNOPSIS +In \FCslapd.conf\FT: + ... + \FCinclude ETCDIR/schema/dyngroup.schema\FT + ... + \FCmoduleload autogroup.so\FT + ... + \FCdatabase\FT ... + ... + \FCoverlay autogroup\FT + \FCautogroup-attrset groupOfURLs memberURL member\FT +.SH DESCRIPTION +The +.B autogroup +overlay to +.BR slapd (8) +allows automated updates of group memberships which meet the requirements +of any filter contained in the group definition. The filters are built from +LDAP URI-valued attributes. Any time an object is added/deleted/updated, i= t is +tested for compliance with the filters, and its membership is accordingly +updated. For searches and compares, it behaves like a static group. +If the attribute part of the URI is filled, the group entry is populated by +the values of this attribute in the entries resulting from the search. +.SH CONFIGURATION +Either +.BR \FCslapd.conf\FT (5) +or the \FCcn=3Dconfig\FT methodology of +.BR \FCslapd-config\FT (5) +may be used for configuring autogroup. Both syntaxes are provided +here for convenience: +.TP +.B \FCautogroup-attrset\FT <group-oc> <URL-ad> <member-ad> +.TP +.B \FColcAGattrSet:\FT <group-oc> <URL-ad> <member-ad> +This defines the objectclass-attribute-URI mappings defining the +automatically managed groups, and may appear multiple times. + +The value <group-oc> is the name of the objectClass that represents +the group. + +The value <URL-ad> is the name of the attributeDescription that +contains the URI that is converted to the filters. If no URI is +present, there will be no members in that group. It must be a subtype +of labeledURI. + +The value <member-ad> is the name of the attributeDescription that +specifies the member attribute. User modification of this attribute is +disabled for consistency. +.TP +.B \FCautogroup-memberof-ad\FT <memberof-ad> +.TP +.B \FColcAGmemberOfAd\FT <memberof-ad> +This defines the attribute that is used by the memberOf overlay to +store the names of groups that an entry is member of; it must be +DN-valued. It should be set to the same value as +memberof-memberof-ad. It defaults to 'memberOf'. +.SH EXAMPLES +As above in SYNOPSIS, or with memberof: + + ... + \FCinclude ETCDIR/schema/dyngroup.schema\FT + \FCinclude ETCDIR/schema/memberof.schema\FT + ... + \FCmoduleload autogroup.so\FT + \FCmoduleload memberof.so\FT + ... + \FCdatabase\FT ... + ... + \FCoverlay memberof\FT + \FCmemberof-memberof-ad\FT foo + ... + \FCoverlay autogroup\FT + \FCautogroup-attrset groupOfURLs memberURL member\FT + \FCautogroup-memberof-ad\FT foo +.SH CAVEATS +As with static groups, update operations on groups with a large number +of members may be slow. If the attribute part of the URI is specified, +modify and delete operations are more difficult to handle. In these +cases the overlay will try to detect if groups have been modified and +then simply refresh them. This can cause performance hits if the +search specified by the URI deals with a significant number of +entries. +.SH ACKNOWLEDGEMENTS +This module was originally written in 2007 by Micha=C5=82 +Szulczy=C5=84ski. Further enhancements were contributed by Howard +Chu, Raphael Ouazana, Norbert Pueschel, and Christian Manal. Manpage +updates provided by Emily Backes. +.SH SEE ALSO +.BR slapd.conf (5), +.BR slapd (8). +.SH Copyrights +Copyright \[u00A9] 1998-2017 The OpenLDAP Foundation. +Portions Copyright \[u00A9] 2007 Micha=C5=82 Szulczy=C5=84ski. +All rights reserved. --=20 2.11.0 --Multipart=_Mon__16_Jan_2017_13_04_30_-0800_xqWAijQoRs30vwBy--

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(ITS#8569) manpage for autogroup
by ebackes＠symas.com 16 Jan '17

16 Jan '17

Full_Name: Emily K Backes Version: anything in the last decade OS: URL: Submission from: (NULL) (50.113.67.84) Quanah squawked at me to add the manpage for autogroup, so here it is. This is largely based on the contents of the existing README, cleaned up for ROFF as appropriate, with slapd.d style names added. I expect we'll need to add more details on delta-syncrepl compatibility after further testing is done with that. Note that default ROFF configs may not be unicode clean, but the original author's name appears to require it. For text review I recommend something like groff -mandocDutftf8 -Tutf8 slapo-autogroup.5 | less As the attached patch is directly derived from the existing README and standard OpenLDAP structures, it has the same copyright and distribution terms. Symas Corporation and myself (Emily Backes) make no further claims beyond the existing OpenLDAP Public License.

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Re: (ITS#8567) Adding our Support services at your site
by quanah＠symas.com 16 Jan '17

16 Jan '17

--On Saturday, January 14, 2017 2:07 PM +0000 nickreiner(a)thishosting.rocks wrote: > Full_Name: Nick Reiner > Version: Latest > OS: Linux-based distros. > URL: http://www.openldap.org/support/ > Submission from: (NULL) (92.53.50.107) Entry added, it will show up on the website the next time it is updated. Regards, Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>

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Re: (ITS#8568) slapd SASL EXTERNAL bind getprop SSF bug; can provoke SEGFAULT
by quanah＠symas.com 15 Jan '17

15 Jan '17

--On Sunday, January 15, 2017 9:15 PM +0000 william.b.clay(a)acm.org wrote: > The following patch seems to correct this issue. I have tested it only on > a Debian Linux amd64 system, OpenLDAP 2.4.44 build from source, running > with Cyrus SASL 2.1.25 as distributed in Debian Wheezy. > > bill@fuji:/usr/local/src/openldap-2.4.44/servers/slapd$ diff sasl.c.orig > sasl.c 1501c1501 > < sasl_ssf_t ssf = 0; > --- >> sasl_ssf_t *ssf = NULL; > 1514c1514 > < sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf ); > --- >> sasl_setprop( ctx, SASL_SSF_EXTERNAL, ssf ); > bill@fuji:/usr/local/src/openldap-2.4.44/servers/slapd$ Hi Bill, Thanks very much for the report! It looks like this was introduced in OpenLDAP 2.2. It's definitely not a common case. In the future, please follow the contribution guidelines documented at <http://www.openldap.org/devel/contributing.html> Regards, Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>

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(ITS#8568) slapd SASL EXTERNAL bind getprop SSF bug; can provoke SEGFAULT
by william.b.clay＠acm.org 15 Jan '17

15 Jan '17

Full_Name: Bill Clay Version: 2.4.44 OS: Debian/GNU Linux 7.8 (Wheezy) URL: Submission from: (NULL) (79.12.44.250) In sasl.c 2.4.44 slap_sasl_bind() the target variable for "sasl_getprop( ctx, SASL_SSF_EXTERNAL, (void *)&ssf );" is declared "sasl_ssf_t ssf" but sasl_getprop() needs "sasl_ssf_t *ssf". This also necessitates adjustment of the last argument of the corresponding sasl_setprop() later in the same proc. In certain circumstances (e.g., two successive localhost EXTERNAL binds with on the same LDAP connection on a Debian Linux amd64 system), this provokes a fatal slapd SIGSEGV at sasl.c:1504 due to pointer ctx corruption (low-order 4 bytes of ctx overwritten by the high-order 4 bytes of &op->o_hdr->oh_conn->c_sasl_authctx.external.ssf): (gdb) bt #0 sasl_getprop (conn=0x7f1f00007f1f, propnum=propnum@entry=102, pvalue=pvalue@entry=0x7f1faed42948) at ../../lib/common.c:1042 #1 0x000000000047105c in slap_sasl_bind (op=op@entry=0x7f1fa0002930, rs=rs@entry=0x7f1faed42a60) at sasl.c:1504 #2 0x000000000043ecf7 in fe_op_bind (op=0x7f1fa0002930, rs=0x7f1faed42a60) at bind.c:280 #3 0x000000000043e591 in do_bind (op=0x7f1fa0002930, rs=0x7f1faed42a60) at bind.c:205 #4 0x0000000000422145 in connection_operation (ctx=ctx@entry=0x7f1faed42b90, arg_v=arg_v@entry=0x7f1fa0002930) at connection.c:1158 #5 0x000000000042242e in connection_read_thread (ctx=0x7f1faed42b90, argv=<optimized out>) at connection.c:1294 #6 0x00000000004dc978 in ldap_int_thread_pool_wrapper (xpool=0x124a010) at tpool.c:696 #7 0x00007f1f5c3030a4 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #8 0x00007f1ff22f862d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 (gdb) Usually, there is no obvious impact; I have not been able to provoke the SIGSEGV except with localhost LDAP connections. The following patch seems to correct this issue. I have tested it only on a Debian Linux amd64 system, OpenLDAP 2.4.44 build from source, running with Cyrus SASL 2.1.25 as distributed in Debian Wheezy. bill@fuji:/usr/local/src/openldap-2.4.44/servers/slapd$ diff sasl.c.orig sasl.c 1501c1501 < sasl_ssf_t ssf = 0; --- > sasl_ssf_t *ssf = NULL; 1514c1514 < sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf ); --- > sasl_setprop( ctx, SASL_SSF_EXTERNAL, ssf ); bill@fuji:/usr/local/src/openldap-2.4.44/servers/slapd$

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(ITS#8567) Adding our Support services at your site
by nickreiner＠thishosting.rocks 14 Jan '17

14 Jan '17

Full_Name: Nick Reiner Version: Latest OS: Linux-based distros. URL: http://www.openldap.org/support/ Submission from: (NULL) (92.53.50.107) We'd really appreciate it if you add our support services (https://thishosting.rocks/support/) to http://www.openldap.org/support/ THR Support offers different support services, including OpenLDAP 24/7 technical support - which includes installation, maintenance, and optimization. You can use this info for our listing if you choose to add us: <a href="https://thishosting.rocks/support/">ThisHosting.Rocks Support</a> - USA THR Support offers 24/7 OpenLDAP technical support, including, but not limited to: installation, maintenance, and optimization

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Re: (ITS#8566) underlying Cyrus SASL libdigestmd5 bug reportedly fixed
by hyc＠symas.com 13 Jan '17

13 Jan '17

william.b.clay(a)acm.org wrote: > Per the following, reportedly fixed in cyrus-sasl versions post-2.1.25. > > https://github.com/cyrusimap/cyrus-sasl/issues/370 > > > > Great, closing this ITS. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/

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(ITS#8566) underlying Cyrus SASL libdigestmd5 bug reportedly fixed
by william.b.clay＠acm.org 13 Jan '17

13 Jan '17

Per the following, reportedly fixed in cyrus-sasl versions post-2.1.25. https://github.com/cyrusimap/cyrus-sasl/issues/370

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SASL 2.0.25 libdigestmd5 memory leak [OpenLDAP (ITS#8566)]
by william.b.clay＠acm.org 12 Jan '17

12 Jan '17

Greetings, SASL developers. I recognize the version of SASL2 I'm using is long in tooth, but looking at the code, I believe a memory leak I've encountered is still present in 2.1.26 (latest source I've seen). The problem from an OpenLDAP client viewpoint is described in detail at: http://www.OpenLDAP.org/its/index.cgi?findid=8566 digestmd5.c sasl_client_start()/sasl_client_step(), when called for a new SASL DIGEST-MD5 authentication each time after the first such case, appear to abandon and re-allocate from scratch (without freeing) a [con]text->out_buf allocated and expanded during the previous authentication cycle by _plug_buf_alloc() on behalf of add_to_challenge(). In my case, each DIGEST-MD5 authentication after the first leaks 500-600 bytes, regardless of whether sasl_dispose() is called between successive authentications. I suspect, but have not proven, that this is because "text->out_buf=NULL" appears twice in digestmd5.c, in both make_client_response() and digestmd5_server_mech_step1(). If both instances were executed for one authentication cycle, it could produce the memory leak in question. The latter instance (in digestmd5_server_mech_step1()) might need to free any block addressed by the pointer before nullifying it. Sorry I can't provide a patch or stronger evidence, but the logic here is a bit complex for a casual onlooker to tackle. Thanks for your efforts, Bill Clay

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Re: (ITS#8561) ppolicy overlay and MMR delta-sync lost sync on switching to REFRESH
by bhalsema＠purdue.edu 12 Jan '17

12 Jan '17

We have determined that our initial patch resulted in an undesirable side effect (a race condition due to the "drop" code now being executed). We are uploading a different patch. In short, the modification is limited to the replica handling in the ppolicy_modify() function in which we have changed from the use of LDAP_MOD_DELETE to SLAP_MOD_SOFTDEL. If this is a potentially "dangerous" choice, then, please, let us know. We would prefer to wait for your official modifications, but we understand that the discussion and resolution may take a while. We needed to address the the constant syncrepl REFRESH of our large directory as it was causing operational issues. Thank you! ------------------------------------------------------------------------- Beth A. Halsema - GSEC, GSSP-Java email:bhalsema@purdue.edu Sofware Engineer, Identity & Access Management OVPIT - IT Security and Policy 3495 Kent Avenue, Suite 100 Fax : (765) 464-2233 West Lafayette, IN 47906 Campus Mail: ROSS

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openldap-bugs January 2017