openldap/servers/slapd/back-bdb/passwd.c

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/* passwd.c - bdb backend password routines */
/* $OpenLDAP$ */
/*
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* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"
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#include "external.h"
#include "lber_pvt.h"
int
bdb_exop_passwd( Operation *op, SlapReply *rs )
{
struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
int rc;
Entry *e = NULL;
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struct berval hash = { 0, NULL };
DB_TXN *ltid = NULL;
struct bdb_op_info opinfo;
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char textbuf[SLAP_TEXT_BUFLEN];
size_t textlen = sizeof textbuf;
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struct berval id = { 0, NULL };
struct berval new = { 0, NULL };
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struct berval dn = { 0, NULL };
struct berval ndn = { 0, NULL };
u_int32_t locker = 0;
DB_LOCK lock;
assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->oq_extended.rs_reqoid ) == 0 );
rc = slap_passwd_parse( op->oq_extended.rs_reqdata,
&id, NULL, &new, &rs->sr_text );
#ifdef NEW_LOGGING
LDAP_LOG ( ACL, ENTRY,
"==>bdb_exop_passwd: \"%s\"\n", id.bv_val ? id.bv_val : "", 0, 0 );
#else
Debug( LDAP_DEBUG_ARGS, "==> bdb_exop_passwd: \"%s\"\n",
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id.bv_val ? id.bv_val : "", 0, 0 );
#endif
if( rc != LDAP_SUCCESS ) {
goto done;
}
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if( new.bv_len == 0 ) {
slap_passwd_generate(&new);
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if( new.bv_len == 0 ) {
rs->sr_text = "password generation failed.";
rc = LDAP_OTHER;
goto done;
}
rs->sr_rspdata = slap_passwd_return( &new );
}
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slap_passwd_hash( &new, &hash );
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if( hash.bv_len == 0 ) {
rs->sr_text = "password hash failed";
rc = LDAP_OTHER;
goto done;
}
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if( id.bv_len ) {
dn = id;
} else {
dn = op->o_dn;
}
#ifdef NEW_LOGGING
LDAP_LOG ( ACL, DETAIL1, "bdb_exop_passwd: \"%s\"%s\"\n",
dn.bv_val, id.bv_len ? " (proxy)" : "", 0 );
#else
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Debug( LDAP_DEBUG_TRACE, "bdb_exop_passwd: \"%s\"%s\n",
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dn.bv_val, id.bv_len ? " (proxy)" : "", 0 );
#endif
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if( dn.bv_len == 0 ) {
rs->sr_text = "No password is associated with the Root DSE";
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
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rc = dnNormalize2( NULL, &dn, &ndn );
if( rc != LDAP_SUCCESS ) {
rs->sr_text = "Invalid DN";
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goto done;
}
if( 0 ) {
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retry: /* transaction retry */
if ( e != NULL ) {
bdb_cache_delete_entry(&bdb->bi_cache, e);
bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
}
#ifdef NEW_LOGGING
LDAP_LOG ( ACL, DETAIL1, "bdb_exop_passwd: retrying...\n", 0, 0, 0 );
#else
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Debug( LDAP_DEBUG_TRACE, "bdb_exop_passwd: retrying...\n", 0, 0, 0 );
#endif
rc = TXN_ABORT( ltid );
ltid = NULL;
op->o_private = NULL;
op->o_do_not_cache = opinfo.boi_acl_cache;
if( rc != 0 ) {
rc = LDAP_OTHER;
rs->sr_text = "internal error";
goto done;
}
ldap_pvt_thread_yield();
}
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/* begin transaction */
rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid,
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bdb->bi_db_opflags );
rs->sr_text = NULL;
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if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG ( ACL, ERR,
"bdb_exop_passwd: txn_begin failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
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Debug( LDAP_DEBUG_TRACE,
"bdb_exop_passwd: txn_begin failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
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rc = LDAP_OTHER;
rs->sr_text = "internal error";
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goto done;
}
locker = TXN_ID ( ltid );
opinfo.boi_bdb = op->o_bd;
opinfo.boi_txn = ltid;
opinfo.boi_locker = locker;
opinfo.boi_err = 0;
opinfo.boi_acl_cache = op->o_do_not_cache;
op->o_private = &opinfo;
/* get entry */
rc = bdb_dn2entry_w( op->o_bd, ltid, &ndn, &e, NULL, 0 , locker, &lock);
switch(rc) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
case DB_NOTFOUND:
case 0:
break;
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case LDAP_BUSY:
rs->sr_text = "ldap server busy";
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goto done;
default:
rc = LDAP_OTHER;
rs->sr_text = "internal error";
goto done;
}
if( e == NULL ) {
rs->sr_text = "could not locate authorization entry";
rc = LDAP_NO_SUCH_OBJECT;
goto done;
}
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#ifdef BDB_SUBENTRIES
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if( is_entry_subentry( e ) ) {
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/* entry is an alias, don't allow operation */
rs->sr_text = "authorization entry is subentry";
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rc = LDAP_OTHER;
goto done;
}
#endif
#ifdef BDB_ALIASES
if( is_entry_alias( e ) ) {
/* entry is an alias, don't allow operation */
rs->sr_text = "authorization entry is alias";
rc = LDAP_ALIAS_PROBLEM;
goto done;
}
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#endif
if( is_entry_referral( e ) ) {
/* entry is an referral, don't allow operation */
rs->sr_text = "authorization entry is referral";
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rc = LDAP_OTHER;
goto done;
}
{
Modifications ml;
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struct berval vals[2];
vals[0] = hash;
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vals[1].bv_val = NULL;
ml.sml_desc = slap_schema.si_ad_userPassword;
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ml.sml_values = vals;
#ifdef SLAP_NVALUES
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ml.sml_nvalues = NULL;
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#endif
ml.sml_op = LDAP_MOD_REPLACE;
ml.sml_next = NULL;
rc = bdb_modify_internal( op, ltid,
&ml, e, &rs->sr_text, textbuf, textlen );
if ( (rc == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
rc = opinfo.boi_err;
}
switch(rc) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
rs->sr_text = NULL;
goto retry;
case 0:
rs->sr_text = NULL;
break;
default:
rc = LDAP_OTHER;
rs->sr_text = "entry modify failed";
goto done;
}
/* change the entry itself */
rc = bdb_id2entry_update( op->o_bd, ltid, e );
if( rc != 0 ) {
switch(rc) {
case DB_LOCK_DEADLOCK:
case DB_LOCK_NOTGRANTED:
goto retry;
}
rs->sr_text = "entry update failed";
rc = LDAP_OTHER;
}
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if( rc == 0 ) {
if( op->o_noop ) {
rc = TXN_ABORT( ltid );
} else {
rc = TXN_COMMIT( ltid, 0 );
}
ltid = NULL;
}
op->o_private = NULL;
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if( rc == LDAP_SUCCESS ) {
op->o_req_dn = e->e_name;
op->o_req_ndn = e->e_nname;
op->oq_modify.rs_modlist = &ml;
replog( op );
op->oq_extended.rs_reqoid = slap_EXOP_MODIFY_PASSWD;
}
}
done:
if( e != NULL ) {
bdb_unlocked_cache_return_entry_w( &bdb->bi_cache, e );
}
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if( hash.bv_val != NULL ) {
free( hash.bv_val );
}
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if( ndn.bv_val != NULL ) {
free( ndn.bv_val );
}
if( ltid != NULL ) {
TXN_ABORT( ltid );
op->o_private = NULL;
}
return rc;
}