openldap/servers/slapd/back-ldbm/add.c

403 lines
9.5 KiB
C

/* add.c - ldap ldbm back-end add routine */
/* $OpenLDAP$ */
/*
* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
int
ldbm_back_add(
Backend *be,
Connection *conn,
Operation *op,
Entry *e
)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
struct berval pdn;
Entry *p = NULL;
int rc;
ID id = NOID;
const char *text = NULL;
AttributeDescription *children = slap_schema.si_ad_children;
AttributeDescription *entry = slap_schema.si_ad_entry;
char textbuf[SLAP_TEXT_BUFLEN];
size_t textlen = sizeof textbuf;
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ENTRY, "ldbm_back_add: %s\n", e->e_dn, 0, 0 );
#else
Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n", e->e_dn, 0, 0);
#endif
rc = entry_schema_check( be, e, NULL, &text, textbuf, textlen );
if ( rc != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: entry (%s) failed schema check.\n", e->e_dn, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "entry failed schema check: %s\n",
text, 0, 0 );
#endif
send_ldap_result( conn, op, rc,
NULL, text, NULL, NULL );
return( -1 );
}
if ( ! access_allowed( be, conn, op, e,
entry, NULL, ACL_WRITE, NULL ) )
{
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: No write access to entry (%s).\n",
e->e_dn, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "no write access to entry\n", 0,
0, 0 );
#endif
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
NULL, "no write access to entry", NULL, NULL );
return -1;
}
/* grab giant lock for writing */
ldap_pvt_thread_rdwr_wlock(&li->li_giant_rwlock);
if ( ( rc = dn2id( be, &e->e_nname, &id ) ) || id != NOID ) {
/* if (rc) something bad happened to ldbm cache */
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
send_ldap_result( conn, op,
rc ? LDAP_OTHER : LDAP_ALREADY_EXISTS,
NULL, NULL, NULL, NULL );
return( -1 );
}
/*
* Get the parent dn and see if the corresponding entry exists.
* If the parent does not exist, only allow the "root" user to
* add the entry.
*/
if ( be_issuffix( be, &e->e_nname ) ) {
pdn = slap_empty_bv;
} else {
dnParent( &e->e_nname, &pdn );
}
if( pdn.bv_len ) {
Entry *matched = NULL;
/* get parent with writer lock */
if ( (p = dn2entry_w( be, &pdn, &matched )) == NULL ) {
char *matched_dn = NULL;
BerVarray refs;
if ( matched != NULL ) {
matched_dn = ch_strdup( matched->e_dn );
refs = is_entry_referral( matched )
? get_entry_referrals( be, conn, op, matched )
: NULL;
cache_return_entry_r( &li->li_cache, matched );
} else {
refs = referral_rewrite( default_referral,
NULL, &e->e_name, LDAP_SCOPE_DEFAULT );
}
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: Parent of (%s) does not exist.\n",
e->e_dn, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op, LDAP_REFERRAL, matched_dn,
refs == NULL ? "parent does not exist" : "parent is referral",
refs, NULL );
ber_bvarray_free( refs );
free( matched_dn );
return -1;
}
if ( ! access_allowed( be, conn, op, p,
children, NULL, ACL_WRITE, NULL ) )
{
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: No write access to parent (%s).\n",
e->e_dn, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "no write access to parent\n", 0,
0, 0 );
#endif
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
NULL, "no write access to parent", NULL, NULL );
return -1;
}
if ( is_entry_alias( p ) ) {
/* parent is an alias, don't allow add */
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG(BACK_LDBM, ERR,
"ldbm_back_add: Parent is an alias.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
0, 0 );
#endif
send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
NULL, "parent is an alias", NULL, NULL );
return -1;
}
if ( is_entry_referral( p ) ) {
/* parent is a referral, don't allow add */
char *matched_dn = ch_strdup( p->e_dn );
BerVarray refs = is_entry_referral( p )
? get_entry_referrals( be, conn, op, p )
: NULL;
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: Parent is referral.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
0, 0 );
#endif
send_ldap_result( conn, op, LDAP_REFERRAL,
matched_dn, NULL, refs, NULL );
ber_bvarray_free( refs );
free( matched_dn );
return -1;
}
} else {
if(pdn.bv_val != NULL) {
assert( *pdn.bv_val == '\0' );
}
/* no parent, must be adding entry to root */
if ( !be_isroot( be, &op->o_ndn ) ) {
if ( be_issuffix( be, (struct berval *)&slap_empty_bv ) || be_isupdate( be, &op->o_ndn ) ) {
p = (Entry *)&slap_entry_root;
rc = access_allowed( be, conn, op, p,
children, NULL, ACL_WRITE, NULL );
p = NULL;
if ( ! rc ) {
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: No write "
"access to parent (\"\").\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"no write access to parent\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op,
LDAP_INSUFFICIENT_ACCESS,
NULL,
"no write access to parent",
NULL, NULL );
return -1;
}
} else {
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: %s add denied.\n",
pdn.bv_val == NULL ? "suffix"
: "entry at root", 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
pdn.bv_val == NULL ? "suffix"
: "entry at root", 0, 0 );
#endif
send_ldap_result( conn, op,
LDAP_INSUFFICIENT_ACCESS,
NULL, NULL, NULL, NULL );
return -1;
}
}
}
if ( next_id( be, &e->e_id ) ) {
if( p != NULL) {
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
}
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: next_id failed.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "ldbm_add: next_id failed\n",
0, 0, 0 );
#endif
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "next_id add failed", NULL, NULL );
return( -1 );
}
/*
* Try to add the entry to the cache, assign it a new dnid.
*/
rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
if ( rc != 0 ) {
if( p != NULL) {
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
}
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: cache_add_entry_lock failed.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
0 );
#endif
send_ldap_result( conn, op,
rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OTHER,
NULL, rc > 0 ? NULL : "cache add failed", NULL, NULL );
return( -1 );
}
rc = -1;
/* attribute indexes */
if ( index_entry_add( be, e, e->e_attrs ) != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: index_entry_add failed.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "index_entry_add failed\n", 0,
0, 0 );
#endif
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "index generation failed", NULL, NULL );
goto return_results;
}
/* dn2id index */
if ( dn2id_add( be, &e->e_nname, e->e_id ) != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: dn2id_add failed.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
0, 0 );
#endif
/* FIXME: delete attr indices? */
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "DN index generation failed", NULL, NULL );
goto return_results;
}
/* id2entry index */
if ( id2entry_add( be, e ) != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDBM, ERR,
"ldbm_back_add: id2entry_add failed.\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
0, 0 );
#endif
/* FIXME: delete attr indices? */
(void) dn2id_delete( be, &e->e_nname, e->e_id );
send_ldap_result( conn, op, LDAP_OTHER,
NULL, "entry store failed", NULL, NULL );
goto return_results;
}
send_ldap_result( conn, op, LDAP_SUCCESS,
NULL, NULL, NULL, NULL );
/* marks the entry as committed, so it is added to the cache;
* otherwise it is removed from the cache, but not destroyed;
* it will be destroyed by the caller */
rc = 0;
cache_entry_commit( e );
return_results:;
if (p != NULL) {
/* free parent and writer lock */
cache_return_entry_w( &li->li_cache, p );
}
if ( rc ) {
/*
* in case of error, writer lock is freed
* and entry's private data is destroyed.
* otherwise, this is done when entry is released
*/
cache_return_entry_w( &li->li_cache, e );
ldap_pvt_thread_rdwr_wunlock(&li->li_giant_rwlock);
}
return( rc );
}