openldap-technical

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9802 discussions

ldap_get_values(..) returns decoding error only during stress test.
by Mangesh Sawant 09 Jun '13

09 Jun '13

Stress test parameters are as follows. TPS : 1000 Users in LDAP DB : 50K LDAP operation performed during stress : ldapsearch. Problem is, user is fetched from LDAP server(verified this with tcpdump), but ldap_get_values returns 'DECODING ERROR'. This happens randomly during stress for 8 or 9 users out of 50K, during stress. If ldap search is performed for a single user, there is no issue. Is this a known issue in OpenLDAP client library ? Is any fix available for this issue. -- Thanks And Regards , Mangesh Sawant .

2 3

olcAuthzRegexp and SASL
by Brendan Kearney 08 Jun '13

08 Jun '13

all, i am working on getting SASL, Kerberos 5, and LDAP working together. i buggered an olcAuthzRegexp and need to correct it. i need to remove the one in place, and replace it with the corrected version. below is what i am trying: ldapmodify -QY EXTERNAL -H ldapi:/// dn: cn=config changetype: delete olcAuthzRegexp: uid=([^,]+),cn=bpk2.com,cn=gssapi,cn=auth uid= $1,ou=Users,dc=bpk2,dc=com - changetype: modify add: olcAuthzRegexp olcAuthzRegexp: {0}uid=([^,]*),cn=bpk2.com,cn=gssapi,cn=auth olcAuthzRegexp: {1}uid=$1,ou=Users,dc=bpk2,dc=com (note, the first olcAuthzRegexp that is to be deleted should be all on one line, and that is why it is wrong. formatting in this message may change the way it looks.) the error i get is:

2 4

[lmdb] mdb_stat with named databases
by JK 08 Jun '13

08 Jun '13

Hi, should using 'mdb_stat' in c work with named databases? In my test, when using 'mdb_dbi_open' with a string name and inserting some data, 'mdb_stat' sets all 'MDB_stat' values to zero. Using an unnamed database or the 'mdb_stat' command-line utility returns expected values. I'm using the gitorius mdb version, commit e7f6767, on linux 3.9.4. Thanks for any insights. relevant code (generated) ---- #include <stdio.h> #include <lmdb.h> #define s(arg) status=arg;if(!(MDB_SUCCESS==status)){puts(mdb_strerror(status));return(status);} int status; MDB_env* env; int main() { MDB_stat stat; int data; MDB_val val; MDB_txn* txn; MDB_dbi dbi; s(mdb_env_create(&env)); s(mdb_env_set_maxdbs(env,10u)); s(mdb_env_set_maxreaders(env,3u)); s(mdb_env_open(env,"/tmp/mdb",0u,384u)); s(mdb_txn_begin(env,0u,0u,&txn)); s(mdb_dbi_open(txn,"testdb",MDB_CREATE,&dbi)); val.mv_size=sizeof(int); val.mv_data=&data; data=123u; s(mdb_put(txn,dbi,&val,&val,0u)); data=124u; s(mdb_put(txn,dbi,&val,&val,0u)); data=125u; s(mdb_put(txn,dbi,&val,&val,0u)); s(mdb_txn_commit(txn)); s(mdb_txn_begin(env,0u,MDB_RDONLY,&txn)); s(mdb_stat(txn,dbi,&stat)); mdb_txn_abort(txn); printf("ms-entries: %lu\nms-depth: %lu\n",stat.ms_entries,stat.ms_depth); mdb_env_close(env); return(0); } ----

1 0

How to build OpenLDAP in Windows?
by Ashwin Kumar 07 Jun '13

07 Jun '13

Can someone point out how to build OpenLDAP windows library using Visual Studio compiler? Compiling in Cygwin or MinGW is not the option now. -- Ashwin kumar (http://ashwinkumar.me)

1 0

Openldap
by Caldwell, Carmela 07 Jun '13

07 Jun '13

We are trying to install Open LDAP, but we are not sure if it will work with z/OS 1.13 mainframe. Does anyone have experience with z/OS mainframe? Thank you, Carmela C. Caldwell Data Security Analyst Bexar ccaldwell(a)bexar.org<mailto:ccaldwell@bexar.org>

2 1

Building 32-bit libraries on 64-bit machine
by Ashwin Kumar 07 Jun '13

07 Jun '13

I am using a 64 bit machine to build OpenLDAP libraries. Building 64-bit libraries works fine. Is there any switch for the configure script to build the 32-bit libraries. Is this documented anywhere? -- Ashwin kumar (http://ashwinkumar.me)

3 5

Per User Search Limits
by Jason Brandt 07 Jun '13

07 Jun '13

I have done some searching, and have been unable to come up with a solution/answer... I'm looking for a way to change the server side search limits on a per user basis. Currently, if we want to maintain global search result limit, it appears that we are required to use the administrator account to bypass the search result limit. Is there any way to enable a user to bypass the search limit? We have a few service accounts that we have created, which we would like to be able to bypass this limit, while still enforcing it for standard users and anonymous. Any suggestions would be greatly appreciated. We're using the olc configuration file format as well, if that matters. -- Jason K. Brandt Systems Administrator Bradley University

3 3

Unable to bind sample program to LDAP server via SSL (ldaps://)
by Ashwin Kumar 06 Jun '13

06 Jun '13

I have a sample program here that is trying to connect to LDAP server on the secured port (ldaps://) However, the sample program is not able to bind to the server. #define LDAP_DEPRECATED 1 #include <stdio.h> #include <ldap.h> #define HOSTNAME "192.168.1.51" #define PORTNUMBER 10389 #define BIND_DN "dc=example,dc=com" #define BIND_PW "secret" int main() { LDAP *ld; int rc; int reqcert = LDAP_OPT_X_TLS_NEVER; int version = LDAP_VERSION3; int ret(0); if (ldap_initialize (&ld, "ldaps://192.168.1.51:10636")) { perror("ldap_init"); /* no error here */ return(1); } ldap_set_option (ld, LDAP_OPT_PROTOCOL_VERSION, &version); ldap_set_option (ld, LDAP_OPT_X_TLS_REQUIRE_CERT, &reqcert); rc = ldap_bind_s(ld, BIND_DN, BIND_PW, LDAP_AUTH_SIMPLE); if( rc != LDAP_SUCCESS ) { fprintf(stderr, "ldap_simple_bind_s: %s\n", ldap_err2string(rc) ); return( 1 ); } printf("Initial Authentication successful\n"); ldap_unbind(ld); } However, with START_TLS the sample program successfully binds to LDAP server running on port 10389. ldapsearch client is able to connect to the server ans search the user base tree. But the sample program above does not. To get it working with START_TLS: Here is what I have added: ldap_set_option (ld, LDAP_OPT_X_TLS_REQUIRE_CERT, &reqcert); rc = ldap_start_tls_s(ld, NULL, NULL); if (rc != LDAP_SUCCESS) { printf("ldap_start_tls() %s",ldap_err2string(ret)); } *Can someone point out what I am missing here for binding to LDAP server via ldaps://??* -- Ashwin kumar (http://ashwinkumar.me)

1 0

Possible ppolicy override for other than rootDN
by Christian Kratzer 05 Jun '13

05 Jun '13

Hi, We have a customer setup where the corporate identity management applications provisions users to the directory, resets their passwords etc... The tool binds as a specific user and we permit write access to appropriate subtress via an acl. The customer also uses password policy to enforce policy in ldap. The problem we have is that the idm tool is obivously also subject to the pwdMinAge and pwdSafeModify policies. The tool never stores a users password so when pwdSafeModify is in effect it cannot provide the old password to satisfy the policy. It obviously also cannot reset the password until pwdMinAge has elapsed. Giving the rootDN credentials to the tool is also not an option as we would like to keep audit logs clean and have the acl in place to stop the tool from writing all over the place. So we would like to override password policy for the idm tools bind user similarly as the rootDN is already able to bypass policy. I found following section in ppolicy.c 1197 static int 1198 ppolicy_bind( Operation *op, SlapReply *rs ) 1199 { 1200 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info; 1201 1202 /* Reset lockout status on all Bind requests */ 1203 if ( !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) { 1204 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val); 1205 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn ); 1206 } 1207 1208 /* Root bypasses policy */ 1209 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn )) { 1210 Entry *e; 1211 int rc; I would think hacking line 1205 one could hardcode additional dn but I am searching for a cleaner more general solution. I was thinking on the lines of having a configurable olcPPolicyOverride with a list of dn that override password policy like the rootDN already does. If I attempted such a patch would it have changes of being accepted from the architectural point of view ? Any other ideas on how to solve above problem ? Greetings Christian -- Christian Kratzer CK Software GmbH Email: ck(a)cksoft.de Wildberger Weg 24/2 Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart Web: http://www.cksoft.de/ Geschaeftsfuehrer: Christian Kratzer

3 5

SSHA as default password-hash in next password change
by cbulist＠gmail.com 05 Jun '13

05 Jun '13

Hi, All our users in LDAP database are under MD5 encryption. We want to change this to SSHA in the next user password change. We tried using: password-hash {SSHA} option in slapd.conf and restart the ldap service but it didn't work. The user password are still under MD5 encryption. We are using openldap 2.4.23-26 version. Any clue about this problem?. Thanks in advance! CBU

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openldap-technical