-/* backglue.c - backend glue routines */
+/* backglue.c - backend glue */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2001-2004 The OpenLDAP Foundation.
+ * Copyright 2001-2007 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* All of the glued backends must share a common suffix. E.g., you
* can glue o=foo and ou=bar,o=foo but you can't glue o=foo and o=bar.
*
- * This uses the backend structures and routines extensively, but is
- * not an actual backend of its own. To use it you must add a "subordinate"
- * keyword to the configuration of other backends. Subordinates will
- * automatically be connected to their parent backend.
- *
* The purpose of these functions is to allow you to split a single database
* into pieces (for load balancing purposes, whatever) but still be able
* to treat it as a single database after it's been split. As such, each
- * of the glued backends should have identical rootdn and rootpw.
- *
- * If you need more elaborate configuration, you probably should be using
- * back-meta instead.
+ * of the glued backends should have identical rootdn.
* -- Howard Chu
*/
#include "slap.h"
typedef struct gluenode {
- BackendDB *be;
- struct berval pdn;
+ BackendDB *gn_be;
+ struct berval gn_pdn;
} gluenode;
typedef struct glueinfo {
- BackendInfo bi;
- BackendDB bd;
- int nodes;
- gluenode n[1];
+ int gi_nodes;
+ struct berval gi_pdn;
+ gluenode gi_n[1];
} glueinfo;
+static slap_overinst glue;
+
static int glueMode;
static BackendDB *glueBack;
-static slap_response glue_back_response;
+static slap_response glue_op_response;
/* Just like select_backend, but only for our backends */
static BackendDB *
glue_back_select (
BackendDB *be,
- const char *dn
+ struct berval *dn
)
{
- glueinfo *gi = (glueinfo *) be->bd_info;
- struct berval bv;
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ glueinfo *gi = (glueinfo *)on->on_bi.bi_private;
int i;
- bv.bv_len = strlen(dn);
- bv.bv_val = (char *) dn;
-
- for (i = 0; i<gi->nodes; i++) {
- assert( gi->n[i].be->be_nsuffix );
+ for (i = gi->gi_nodes-1; i >= 0; i--) {
+ assert( gi->gi_n[i].gn_be->be_nsuffix != NULL );
- if (dnIsSuffix(&bv, &gi->n[i].be->be_nsuffix[0])) {
- return gi->n[i].be;
+ if (dnIsSuffix(dn, &gi->gi_n[i].gn_be->be_nsuffix[0])) {
+ return gi->gi_n[i].gn_be;
}
}
- return NULL;
-}
-
-/* This function will only be called in tool mode */
-static int
-glue_back_open (
- BackendInfo *bi
-)
-{
- int rc = 0;
- static int glueOpened = 0;
-
- if (glueOpened) return 0;
-
- glueOpened = 1;
-
- /* If we were invoked in tool mode, open all the underlying backends */
- if (slapMode & SLAP_TOOL_MODE) {
- rc = backend_startup (NULL);
- } /* other case is impossible */
- return rc;
-}
-
-/* This function will only be called in tool mode */
-static int
-glue_back_close (
- BackendInfo *bi
-)
-{
- static int glueClosed = 0;
- int rc = 0;
-
- if (glueClosed) return 0;
-
- glueClosed = 1;
-
- if (slapMode & SLAP_TOOL_MODE) {
- rc = backend_shutdown (NULL);
- }
- return rc;
-}
-
-static int
-glue_back_db_open (
- BackendDB *be
-)
-{
- glueinfo *gi = (glueinfo *) be->bd_info;
- static int glueOpened = 0;
- int rc = 0;
-
- if (glueOpened) return 0;
-
- glueOpened = 1;
-
- gi->bd.be_acl = be->be_acl;
-
- if (gi->bd.bd_info->bi_db_open)
- rc = gi->bd.bd_info->bi_db_open(&gi->bd);
-
- return rc;
-}
-
-static int
-glue_back_db_close (
- BackendDB *be
-)
-{
- glueinfo *gi = (glueinfo *) be->bd_info;
- static int glueClosed = 0;
-
- if (glueClosed) return 0;
-
- glueClosed = 1;
-
- /* Close the master */
- if (gi->bd.bd_info->bi_db_close)
- gi->bd.bd_info->bi_db_close( &gi->bd );
-
- return 0;
+ be->bd_info = on->on_info->oi_orig;
+ return be;
}
-static int
-glue_back_db_destroy (
- BackendDB *be
-)
-{
- glueinfo *gi = (glueinfo *) be->bd_info;
-
- if (gi->bd.bd_info->bi_db_destroy)
- gi->bd.bd_info->bi_db_destroy( &gi->bd );
- free (gi);
- return 0;
-}
typedef struct glue_state {
+ char *matched;
+ BerVarray refs;
+ LDAPControl **ctrls;
int err;
- int slimit;
int matchlen;
- char *matched;
int nrefs;
- BerVarray refs;
+ int nctrls;
} glue_state;
static int
-glue_back_response ( Operation *op, SlapReply *rs )
+glue_op_cleanup( Operation *op, SlapReply *rs )
+{
+ /* This is not a final result */
+ if (rs->sr_type == REP_RESULT )
+ rs->sr_type = REP_GLUE_RESULT;
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+glue_op_response ( Operation *op, SlapReply *rs )
{
glue_state *gs = op->o_callback->sc_private;
switch(rs->sr_type) {
case REP_SEARCH:
- if ( gs->slimit && rs->sr_nentries >= gs->slimit ) {
- rs->sr_err = gs->err = LDAP_SIZELIMIT_EXCEEDED;
- return -1;
- }
- /* fallthru */
case REP_SEARCHREF:
+ case REP_INTERMEDIATE:
return SLAP_CB_CONTINUE;
default:
rs->sr_err == LDAP_SIZELIMIT_EXCEEDED ||
rs->sr_err == LDAP_TIMELIMIT_EXCEEDED ||
rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
- gs->err != LDAP_SUCCESS)
+ rs->sr_err == LDAP_NO_SUCH_OBJECT ||
+ gs->err != LDAP_SUCCESS)
gs->err = rs->sr_err;
if (gs->err == LDAP_SUCCESS && gs->matched) {
ch_free (gs->matched);
gs->nrefs = j;
gs->refs = new;
}
+ if (rs->sr_ctrls) {
+ int i, j, k;
+ LDAPControl **newctrls;
+
+ for (i=0; rs->sr_ctrls[i]; i++);
+
+ j = gs->nctrls;
+ if (!j) {
+ newctrls = ch_malloc((i+1)*sizeof(LDAPControl *));
+ } else {
+ newctrls = ch_realloc(gs->ctrls,
+ (j+i+1)*sizeof(LDAPControl *));
+ }
+ for (k=0; k<i; j++,k++) {
+ newctrls[j] = ch_malloc(sizeof(LDAPControl));
+ *newctrls[j] = *rs->sr_ctrls[k];
+ if ( !BER_BVISNULL( &rs->sr_ctrls[k]->ldctl_value ))
+ ber_dupbv( &newctrls[j]->ldctl_value,
+ &rs->sr_ctrls[k]->ldctl_value );
+ }
+ newctrls[j] = NULL;
+ gs->nctrls = j;
+ gs->ctrls = newctrls;
+ }
}
return 0;
}
static int
-glue_back_search ( Operation *op, SlapReply *rs )
+glue_op_func ( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ BackendDB *b0 = op->o_bd;
+ BackendInfo *bi0 = op->o_bd->bd_info;
+ BI_op_modify **func;
+ slap_operation_t which = op_bind;
+ int rc;
+
+ op->o_bd = glue_back_select (b0, &op->o_req_ndn);
+
+ /* If we're on the master backend, let overlay framework handle it */
+ if ( op->o_bd == b0 )
+ return SLAP_CB_CONTINUE;
+
+ b0->bd_info = on->on_info->oi_orig;
+
+ switch(op->o_tag) {
+ case LDAP_REQ_ADD: which = op_add; break;
+ case LDAP_REQ_DELETE: which = op_delete; break;
+ case LDAP_REQ_MODIFY: which = op_modify; break;
+ case LDAP_REQ_MODRDN: which = op_modrdn; break;
+ case LDAP_REQ_EXTENDED: which = op_extended; break;
+ default: assert( 0 ); break;
+ }
+
+ func = &op->o_bd->bd_info->bi_op_bind;
+ if ( func[which] )
+ rc = func[which]( op, rs );
+ else
+ rc = SLAP_CB_BYPASS;
+
+ op->o_bd = b0;
+ op->o_bd->bd_info = bi0;
+ return rc;
+}
+
+static int
+glue_response ( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ BackendDB *be = op->o_bd;
+ be = glue_back_select (op->o_bd, &op->o_req_ndn);
+
+ /* If we're on the master backend, let overlay framework handle it.
+ * Otherwise, bail out.
+ */
+ return ( op->o_bd == be ) ? SLAP_CB_CONTINUE : SLAP_CB_BYPASS;
+}
+
+static int
+glue_chk_referrals ( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ BackendDB *b0 = op->o_bd;
+ BackendInfo *bi0 = op->o_bd->bd_info;
+ int rc;
+
+ op->o_bd = glue_back_select (b0, &op->o_req_ndn);
+ if ( op->o_bd == b0 )
+ return SLAP_CB_CONTINUE;
+
+ b0->bd_info = on->on_info->oi_orig;
+
+ if ( op->o_bd->bd_info->bi_chk_referrals )
+ rc = ( *op->o_bd->bd_info->bi_chk_referrals )( op, rs );
+ else
+ rc = SLAP_CB_CONTINUE;
+
+ op->o_bd = b0;
+ op->o_bd->bd_info = bi0;
+ return rc;
+}
+
+static int
+glue_chk_controls ( Operation *op, SlapReply *rs )
{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
BackendDB *b0 = op->o_bd;
- glueinfo *gi = (glueinfo *) b0->bd_info;
+ BackendInfo *bi0 = op->o_bd->bd_info;
+ int rc = SLAP_CB_CONTINUE;
+
+ op->o_bd = glue_back_select (b0, &op->o_req_ndn);
+ if ( op->o_bd == b0 )
+ return SLAP_CB_CONTINUE;
+
+ b0->bd_info = on->on_info->oi_orig;
+
+ /* if the subordinate database has overlays, the bi_chk_controls()
+ * hook is actually over_aux_chk_controls(); in case it actually
+ * wraps a missing hok, we need to mimic the behavior
+ * of the frontend applied to that database */
+ if ( op->o_bd->bd_info->bi_chk_controls ) {
+ rc = ( *op->o_bd->bd_info->bi_chk_controls )( op, rs );
+ }
+
+
+ if ( rc == SLAP_CB_CONTINUE ) {
+ rc = backend_check_controls( op, rs );
+ }
+
+ op->o_bd = b0;
+ op->o_bd->bd_info = bi0;
+ return rc;
+}
+
+/* ITS#4615 - overlays configured above the glue overlay should be
+ * invoked for the entire glued tree. Overlays configured below the
+ * glue overlay should only be invoked on the master backend.
+ * So, if we're searching on any subordinates, we need to force the
+ * current overlay chain to stop processing, without stopping the
+ * overall callback flow.
+ */
+static int
+glue_sub_search( Operation *op, SlapReply *rs, BackendDB *b0,
+ slap_overinst *on )
+{
+ /* Process any overlays on the master backend */
+ if ( op->o_bd == b0 && on->on_next ) {
+ BackendInfo *bi = op->o_bd->bd_info;
+ int rc = SLAP_CB_CONTINUE;
+ for ( on=on->on_next; on; on=on->on_next ) {
+ op->o_bd->bd_info = (BackendInfo *)on;
+ if ( on->on_bi.bi_op_search ) {
+ rc = on->on_bi.bi_op_search( op, rs );
+ if ( rc != SLAP_CB_CONTINUE )
+ break;
+ }
+ }
+ op->o_bd->bd_info = bi;
+ if ( rc != SLAP_CB_CONTINUE )
+ return rc;
+ }
+ return op->o_bd->be_search( op, rs );
+}
+
+static int
+glue_op_search ( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ glueinfo *gi = (glueinfo *)on->on_bi.bi_private;
+ BackendDB *b0 = op->o_bd;
+ BackendDB *b1 = NULL, *btmp;
+ BackendInfo *bi0 = op->o_bd->bd_info;
int i;
- long stoptime = 0;
- glue_state gs = {0, 0, 0, NULL, 0, NULL};
- slap_callback cb = { NULL, glue_back_response, NULL, NULL };
- int scope0, slimit0, tlimit0;
- struct berval dn, ndn;
+ long stoptime = 0, starttime;
+ glue_state gs = {NULL, NULL, NULL, 0, 0, 0, 0};
+ slap_callback cb = { NULL, glue_op_response, glue_op_cleanup, NULL };
+ int scope0, tlimit0;
+ struct berval dn, ndn, *pdn;
cb.sc_private = &gs;
cb.sc_next = op->o_callback;
- if (op->ors_tlimit) {
- stoptime = slap_get_time () + op->ors_tlimit;
- }
+ starttime = op->o_time;
+ stoptime = slap_get_time () + op->ors_tlimit;
+
+ op->o_bd = glue_back_select (b0, &op->o_req_ndn);
+ b0->bd_info = on->on_info->oi_orig;
switch (op->ors_scope) {
case LDAP_SCOPE_BASE:
- op->o_bd = glue_back_select (b0, op->o_req_ndn.bv_val);
+ if ( op->o_bd == b0 )
+ return SLAP_CB_CONTINUE;
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
if (op->o_bd && op->o_bd->be_search) {
rs->sr_err = op->o_bd->be_search( op, rs );
- } else {
- send_ldap_error(op, rs, LDAP_UNWILLING_TO_PERFORM,
- "No search target found");
}
return rs->sr_err;
op->o_callback = &cb;
rs->sr_err = gs.err = LDAP_UNWILLING_TO_PERFORM;
scope0 = op->ors_scope;
- slimit0 = gs.slimit = op->ors_slimit;
tlimit0 = op->ors_tlimit;
dn = op->o_req_dn;
ndn = op->o_req_ndn;
+ b1 = op->o_bd;
/*
- * Execute in reverse order, most general first
+ * Execute in reverse order, most specific first
*/
- for (i = gi->nodes-1; i >= 0; i--) {
- if (!gi->n[i].be || !gi->n[i].be->be_search)
+ for (i = gi->gi_nodes; i >= 0; i--) {
+ if ( i == gi->gi_nodes ) {
+ btmp = b0;
+ pdn = &gi->gi_pdn;
+ } else {
+ btmp = gi->gi_n[i].gn_be;
+ pdn = &gi->gi_n[i].gn_pdn;
+ }
+ if (!btmp || !btmp->be_search)
+ continue;
+ if (!dnIsSuffix(&btmp->be_nsuffix[0], &b1->be_nsuffix[0]))
continue;
- if (tlimit0) {
- op->ors_tlimit = stoptime - slap_get_time ();
+ if (tlimit0 != SLAP_NO_LIMIT) {
+ op->o_time = slap_get_time();
+ op->ors_tlimit = stoptime - op->o_time;
if (op->ors_tlimit <= 0) {
rs->sr_err = gs.err = LDAP_TIMELIMIT_EXCEEDED;
break;
}
}
- if (slimit0) {
- op->ors_slimit = slimit0 - rs->sr_nentries;
- if (op->ors_slimit < 0) {
- rs->sr_err = gs.err = LDAP_SIZELIMIT_EXCEEDED;
- break;
- }
- }
rs->sr_err = 0;
/*
* check for abandon
*/
if (op->o_abandon) {
- /* FIXME: see right after end_of_loop: */
- op->o_req_dn = dn;
- op->o_req_ndn = ndn;
- goto done;
+ goto end_of_loop;
}
- op->o_bd = gi->n[i].be;
+ op->o_bd = btmp;
- assert( op->o_bd->be_suffix );
- assert( op->o_bd->be_nsuffix );
+ assert( op->o_bd->be_suffix != NULL );
+ assert( op->o_bd->be_nsuffix != NULL );
if (scope0 == LDAP_SCOPE_ONELEVEL &&
- dn_match(&gi->n[i].pdn, &ndn))
+ dn_match(pdn, &ndn))
{
op->ors_scope = LDAP_SCOPE_BASE;
op->o_req_dn = op->o_bd->be_suffix[0];
op->o_req_ndn = op->o_bd->be_nsuffix[0];
rs->sr_err = op->o_bd->be_search(op, rs);
+ if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
+ gs.err = LDAP_SUCCESS;
+ }
+ op->ors_scope = LDAP_SCOPE_ONELEVEL;
+ op->o_req_dn = dn;
+ op->o_req_ndn = ndn;
+
+ } else if (scope0 == LDAP_SCOPE_SUBTREE &&
+ dn_match(&op->o_bd->be_nsuffix[0], &ndn))
+ {
+ rs->sr_err = glue_sub_search( op, rs, b0, on );
} else if (scope0 == LDAP_SCOPE_SUBTREE &&
dnIsSuffix(&op->o_bd->be_nsuffix[0], &ndn))
{
op->o_req_dn = op->o_bd->be_suffix[0];
op->o_req_ndn = op->o_bd->be_nsuffix[0];
- rs->sr_err = op->o_bd->be_search( op, rs );
+ rs->sr_err = glue_sub_search( op, rs, b0, on );
+ if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
+ gs.err = LDAP_SUCCESS;
+ }
+ op->o_req_dn = dn;
+ op->o_req_ndn = ndn;
} else if (dnIsSuffix(&ndn, &op->o_bd->be_nsuffix[0])) {
- rs->sr_err = op->o_bd->be_search( op, rs );
+ rs->sr_err = glue_sub_search( op, rs, b0, on );
}
switch ( gs.err ) {
case LDAP_SIZELIMIT_EXCEEDED:
case LDAP_TIMELIMIT_EXCEEDED:
case LDAP_ADMINLIMIT_EXCEEDED:
+ case LDAP_NO_SUCH_OBJECT:
+#ifdef LDAP_CONTROL_X_CHAINING_BEHAVIOR
+ case LDAP_X_CANNOT_CHAIN:
+#endif /* LDAP_CONTROL_X_CHAINING_BEHAVIOR */
goto end_of_loop;
default:
}
end_of_loop:;
op->ors_scope = scope0;
- op->ors_slimit = slimit0;
op->ors_tlimit = tlimit0;
+ op->o_time = starttime;
op->o_req_dn = dn;
op->o_req_ndn = ndn;
break;
}
- op->o_callback = cb.sc_next;
- rs->sr_err = gs.err;
- rs->sr_matched = gs.matched;
- rs->sr_ref = gs.refs;
-
- send_ldap_result( op, rs );
+ if ( op->o_abandon ) {
+ rs->sr_err = SLAPD_ABANDON;
+ } else {
+ op->o_callback = cb.sc_next;
+ rs->sr_err = gs.err;
+ rs->sr_matched = gs.matched;
+ rs->sr_ref = gs.refs;
+ rs->sr_ctrls = gs.ctrls;
+
+ send_ldap_result( op, rs );
+ }
-done:
op->o_bd = b0;
+ op->o_bd->bd_info = bi0;
if (gs.matched)
free (gs.matched);
if (gs.refs)
ber_bvarray_free(gs.refs);
+ if (gs.ctrls) {
+ for (i = gs.nctrls; --i >= 0; ) {
+ if (!BER_BVISNULL( &gs.ctrls[i]->ldctl_value ))
+ free(gs.ctrls[i]->ldctl_value.bv_val);
+ free(gs.ctrls[i]);
+ }
+ free(gs.ctrls);
+ }
return rs->sr_err;
}
+static BackendDB toolDB;
static int
glue_tool_entry_open (
int mode
)
{
+ slap_overinfo *oi = (slap_overinfo *)b0->bd_info;
+
/* We don't know which backend to talk to yet, so just
* remember the mode and move on...
*/
glueMode = mode;
glueBack = NULL;
+ toolDB = *b0;
+ toolDB.bd_info = oi->oi_orig;
return 0;
}
return rc;
}
+static slap_overinst *
+glue_tool_inst(
+ BackendInfo *bi
+)
+{
+ slap_overinfo *oi = (slap_overinfo *)bi;
+ slap_overinst *on;
+
+ for ( on = oi->oi_list; on; on=on->on_next ) {
+ if ( !strcmp( on->on_bi.bi_type, glue.on_bi.bi_type ))
+ return on;
+ }
+ return NULL;
+}
+
+/* This function will only be called in tool mode */
+static int
+glue_open (
+ BackendInfo *bi
+)
+{
+ slap_overinst *on = glue_tool_inst( bi );
+ glueinfo *gi = on->on_bi.bi_private;
+ static int glueOpened = 0;
+ int i, j, same, bsame = 0, rc = 0;
+
+ if (glueOpened) return 0;
+
+ glueOpened = 1;
+
+ /* If we were invoked in tool mode, open all the underlying backends */
+ if (slapMode & SLAP_TOOL_MODE) {
+ for (i = 0; i<gi->gi_nodes; i++) {
+ same = 0;
+ /* Same bi_open as our main backend? */
+ if ( gi->gi_n[i].gn_be->bd_info->bi_open ==
+ on->on_info->oi_orig->bi_open )
+ bsame = 1;
+
+ /* Loop thru the bd_info's and make sure we only
+ * invoke their bi_open functions once each.
+ */
+ for ( j = 0; j<i; j++ ) {
+ if ( gi->gi_n[i].gn_be->bd_info->bi_open ==
+ gi->gi_n[j].gn_be->bd_info->bi_open ) {
+ same = 1;
+ break;
+ }
+ }
+ /* OK, it's unique and non-NULL, call it. */
+ if ( !same && gi->gi_n[i].gn_be->bd_info->bi_open )
+ rc = gi->gi_n[i].gn_be->bd_info->bi_open(
+ gi->gi_n[i].gn_be->bd_info );
+ /* Let backend.c take care of the rest of startup */
+ if ( !rc )
+ rc = backend_startup_one( gi->gi_n[i].gn_be );
+ if ( rc ) break;
+ }
+ if ( !rc && !bsame && on->on_info->oi_orig->bi_open )
+ rc = on->on_info->oi_orig->bi_open( on->on_info->oi_orig );
+
+ } /* other case is impossible */
+ return rc;
+}
+
+/* This function will only be called in tool mode */
+static int
+glue_close (
+ BackendInfo *bi
+)
+{
+ static int glueClosed = 0;
+ int rc = 0;
+
+ if (glueClosed) return 0;
+
+ glueClosed = 1;
+
+ if (slapMode & SLAP_TOOL_MODE) {
+ rc = backend_shutdown( NULL );
+ }
+ return rc;
+}
+
+static int
+glue_entry_get_rw (
+ Operation *op,
+ struct berval *dn,
+ ObjectClass *oc,
+ AttributeDescription *ad,
+ int rw,
+ Entry **e )
+{
+ BackendDB *b0 = op->o_bd;
+ int rc;
+
+ op->o_bd = glue_back_select( b0, dn );
+
+ if ( op->o_bd->be_fetch ) {
+ rc = op->o_bd->be_fetch( op, dn, oc, ad, rw, e );
+ } else {
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ }
+ op->o_bd =b0;
+ return rc;
+}
+
+static int
+glue_entry_release_rw (
+ Operation *op,
+ Entry *e,
+ int rw
+)
+{
+ BackendDB *b0 = op->o_bd;
+ int rc = -1;
+
+ op->o_bd = glue_back_select (b0, &e->e_nname);
+
+ if ( op->o_bd->be_release ) {
+ rc = op->o_bd->be_release( op, e, rw );
+
+ } else {
+ /* FIXME: mimic be_entry_release_rw
+ * when no be_release() available */
+ /* free entry */
+ entry_free( e );
+ rc = 0;
+ }
+ op->o_bd = b0;
+ return rc;
+}
+
static ID
glue_tool_entry_first (
BackendDB *b0
)
{
- glueinfo *gi = (glueinfo *) b0->bd_info;
+ slap_overinst *on = glue_tool_inst( b0->bd_info );
+ glueinfo *gi = on->on_bi.bi_private;
int i;
/* If we're starting from scratch, start at the most general */
if (!glueBack) {
- for (i = gi->nodes-1; i >= 0; i--) {
- if (gi->n[i].be->be_entry_open &&
- gi->n[i].be->be_entry_first) {
- glueBack = gi->n[i].be;
- break;
+ if ( toolDB.be_entry_open && toolDB.be_entry_first ) {
+ glueBack = &toolDB;
+ } else {
+ for (i = gi->gi_nodes-1; i >= 0; i--) {
+ if (gi->gi_n[i].gn_be->be_entry_open &&
+ gi->gi_n[i].gn_be->be_entry_first) {
+ glueBack = gi->gi_n[i].gn_be;
+ break;
+ }
}
}
-
}
if (!glueBack || !glueBack->be_entry_open || !glueBack->be_entry_first ||
glueBack->be_entry_open (glueBack, glueMode) != 0)
BackendDB *b0
)
{
- glueinfo *gi = (glueinfo *) b0->bd_info;
+ slap_overinst *on = glue_tool_inst( b0->bd_info );
+ glueinfo *gi = on->on_bi.bi_private;
int i;
ID rc;
while (rc == NOID) {
if ( glueBack && glueBack->be_entry_close )
glueBack->be_entry_close (glueBack);
- for (i=0; i<gi->nodes; i++) {
- if (gi->n[i].be == glueBack)
+ for (i=0; i<gi->gi_nodes; i++) {
+ if (gi->gi_n[i].gn_be == glueBack)
break;
}
if (i == 0) {
glueBack = NULL;
break;
} else {
- glueBack = gi->n[i-1].be;
+ glueBack = gi->gi_n[i-1].gn_be;
rc = glue_tool_entry_first (b0);
}
}
struct berval *text
)
{
- BackendDB *be;
- int rc;
+ BackendDB *be, b2;
+ int rc = -1;
+
+ b2 = *b0;
+ b2.bd_info = (BackendInfo *)glue_tool_inst( b0->bd_info );
+ be = glue_back_select (&b2, &e->e_nname);
+ if ( be == &b2 ) be = &toolDB;
- be = glue_back_select (b0, e->e_ndn);
if (!be->be_entry_put)
return NOID;
if (!glueBack) {
- rc = be->be_entry_open (be, glueMode);
- if (rc != 0)
+ if ( be->be_entry_open ) {
+ rc = be->be_entry_open (be, glueMode);
+ }
+ if (rc != 0) {
return NOID;
+ }
} else if (be != glueBack) {
/* If this entry belongs in a different branch than the
* previous one, close the current database and open the
* new one.
*/
- glueBack->be_entry_close (glueBack);
- rc = be->be_entry_open (be, glueMode);
- if (rc != 0)
+ if ( glueBack->be_entry_close ) {
+ glueBack->be_entry_close (glueBack);
+ }
+ if ( be->be_entry_open ) {
+ rc = be->be_entry_open (be, glueMode);
+ }
+ if (rc != 0) {
return NOID;
+ }
}
glueBack = be;
return be->be_entry_put (be, e, text);
BackendDB *b0
)
{
- glueinfo *gi = (glueinfo *) b0->bd_info;
+ slap_overinst *on = glue_tool_inst( b0->bd_info );
+ glueinfo *gi = on->on_bi.bi_private;
+ BackendInfo *bi = b0->bd_info;
int i;
/* just sync everyone */
- for (i = 0; i<gi->nodes; i++)
- if (gi->n[i].be->be_sync)
- gi->n[i].be->be_sync (gi->n[i].be);
+ for (i = 0; i<gi->gi_nodes; i++)
+ if (gi->gi_n[i].gn_be->be_sync)
+ gi->gi_n[i].gn_be->be_sync (gi->gi_n[i].gn_be);
+ b0->bd_info = on->on_info->oi_orig;
+ if ( b0->be_sync )
+ b0->be_sync( b0 );
+ b0->bd_info = bi;
return 0;
}
-int
-glue_sub_init( )
+static int
+glue_db_init(
+ BackendDB *be
+)
{
- int i, j;
- int cont = num_subordinates;
- BackendDB *b1, *be;
- BackendInfo *bi = NULL;
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ slap_overinfo *oi = on->on_info;
+ BackendInfo *bi = oi->oi_orig;
glueinfo *gi;
- /* While there are subordinate backends, search backwards through the
- * backends and connect them to their superior.
+ if ( SLAP_GLUE_SUBORDINATE( be )) {
+ Debug( LDAP_DEBUG_ANY, "glue: backend %s is already subordinate, "
+ "cannot have glue overlay!\n",
+ be->be_suffix[0].bv_val, 0, 0 );
+ return LDAP_OTHER;
+ }
+
+ gi = ch_calloc( 1, sizeof(glueinfo));
+ on->on_bi.bi_private = gi;
+ dnParent( be->be_nsuffix, &gi->gi_pdn );
+
+ /* Currently the overlay framework doesn't handle these entry points
+ * but we need them....
*/
- for (i = nBackendDB - 1, b1=&backendDB[i]; cont && i>=0; b1--,i--) {
- if (SLAP_GLUE_SUBORDINATE ( b1 ) ) {
- /* The last database cannot be a subordinate of noone */
- if (i == nBackendDB - 1) {
- b1->be_flags ^= SLAP_BFLAG_GLUE_SUBORDINATE;
- }
+ oi->oi_bi.bi_open = glue_open;
+ oi->oi_bi.bi_close = glue_close;
+
+ /* Only advertise these if the root DB supports them */
+ if ( bi->bi_tool_entry_open )
+ oi->oi_bi.bi_tool_entry_open = glue_tool_entry_open;
+ if ( bi->bi_tool_entry_close )
+ oi->oi_bi.bi_tool_entry_close = glue_tool_entry_close;
+ if ( bi->bi_tool_entry_first )
+ oi->oi_bi.bi_tool_entry_first = glue_tool_entry_first;
+ if ( bi->bi_tool_entry_next )
+ oi->oi_bi.bi_tool_entry_next = glue_tool_entry_next;
+ if ( bi->bi_tool_entry_get )
+ oi->oi_bi.bi_tool_entry_get = glue_tool_entry_get;
+ if ( bi->bi_tool_entry_put )
+ oi->oi_bi.bi_tool_entry_put = glue_tool_entry_put;
+ if ( bi->bi_tool_entry_reindex )
+ oi->oi_bi.bi_tool_entry_reindex = glue_tool_entry_reindex;
+ if ( bi->bi_tool_sync )
+ oi->oi_bi.bi_tool_sync = glue_tool_sync;
+
+ /*FIXME : need to add support */
+ oi->oi_bi.bi_tool_dn2id_get = 0;
+ oi->oi_bi.bi_tool_id2entry_get = 0;
+ oi->oi_bi.bi_tool_entry_modify = 0;
+
+ SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_GLUE_INSTANCE;
+
+ return 0;
+}
+
+static int
+glue_db_destroy (
+ BackendDB *be
+)
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ glueinfo *gi = (glueinfo *)on->on_bi.bi_private;
+
+ free (gi);
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+glue_db_close(
+ BackendDB *be
+)
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+
+ on->on_info->oi_bi.bi_db_close = 0;
+ return 0;
+}
+
+int
+glue_sub_del( BackendDB *b0 )
+{
+ BackendDB *be;
+ int rc = 0;
+
+ /* Find the top backend for this subordinate */
+ be = b0;
+ while ( (be=LDAP_STAILQ_NEXT( be, be_next )) != NULL ) {
+ slap_overinfo *oi;
+ slap_overinst *on;
+ glueinfo *gi;
+ int i;
+
+ if ( SLAP_GLUE_SUBORDINATE( be ))
+ continue;
+ if ( !SLAP_GLUE_INSTANCE( be ))
+ continue;
+ if ( !dnIsSuffix( &b0->be_nsuffix[0], &be->be_nsuffix[0] ))
continue;
+
+ /* OK, got the right backend, find the overlay */
+ oi = (slap_overinfo *)be->bd_info;
+ for ( on=oi->oi_list; on; on=on->on_next ) {
+ if ( on->on_bi.bi_type == glue.on_bi.bi_type )
+ break;
}
- gi = NULL;
- for (j = i-1, be=&backendDB[j]; j>=0; be--,j--) {
- if ( ! SLAP_GLUE_SUBORDINATE( be ) ) {
- continue;
+ assert( on != NULL );
+ gi = on->on_bi.bi_private;
+ for ( i=0; i < gi->gi_nodes; i++ ) {
+ if ( gi->gi_n[i].gn_be == b0 ) {
+ int j;
+
+ for (j=i+1; j < gi->gi_nodes; j++)
+ gi->gi_n[j-1] = gi->gi_n[j];
+
+ gi->gi_nodes--;
}
- /* We will only link it once */
- if ( SLAP_GLUE_LINKED( be ) ) {
+ }
+ }
+ if ( be == NULL )
+ rc = LDAP_NO_SUCH_OBJECT;
+
+ return rc;
+}
+
+typedef struct glue_Addrec {
+ struct glue_Addrec *ga_next;
+ BackendDB *ga_be;
+} glue_Addrec;
+
+/* List of added subordinates */
+static glue_Addrec *ga_list;
+
+/* Attach all the subordinate backends to their superior */
+int
+glue_sub_attach()
+{
+ glue_Addrec *ga, *gnext = NULL;
+ int rc = 0;
+
+ /* For all the subordinate backends */
+ for ( ga=ga_list; ga != NULL; ga = gnext ) {
+ BackendDB *be;
+
+ gnext = ga->ga_next;
+
+ /* Find the top backend for this subordinate */
+ be = ga->ga_be;
+ while ( (be=LDAP_STAILQ_NEXT( be, be_next )) != NULL ) {
+ slap_overinfo *oi;
+ slap_overinst *on;
+ glueinfo *gi;
+
+ if ( SLAP_GLUE_SUBORDINATE( be ))
continue;
- }
- assert( be->be_nsuffix );
- assert( b1->be_nsuffix );
- if (!dnIsSuffix(&be->be_nsuffix[0], &b1->be_nsuffix[0])) {
+ if ( !dnIsSuffix( &ga->ga_be->be_nsuffix[0], &be->be_nsuffix[0] ))
continue;
+
+ /* If it's not already configured, set up the overlay */
+ if ( !SLAP_GLUE_INSTANCE( be )) {
+ rc = overlay_config( be, glue.on_bi.bi_type );
+ if ( rc )
+ break;
}
- cont--;
- be->be_flags |= SLAP_BFLAG_GLUE_LINKED;
- if (gi == NULL) {
- /* We create a copy of the superior's be
- * structure, pointing to all of its original
- * information. Then we replace elements of
- * the superior's info with our own. The copy
- * is used whenever we have operations to pass
- * down to the real database.
- */
- b1->be_flags |= SLAP_BFLAG_GLUE_INSTANCE;
- gi = (glueinfo *)ch_malloc(sizeof(glueinfo));
- gi->nodes = 0;
- gi->bd = *b1;
- gi->bi = *b1->bd_info;
- bi = (BackendInfo *)gi;
- bi->bi_open = glue_back_open;
- bi->bi_close = glue_back_close;
- bi->bi_db_open = glue_back_db_open;
- bi->bi_db_close = glue_back_db_close;
- bi->bi_db_destroy = glue_back_db_destroy;
-
- bi->bi_op_search = glue_back_search;
-
- /*
- * hooks for slap tools
- */
- bi->bi_tool_entry_open = glue_tool_entry_open;
- bi->bi_tool_entry_close = glue_tool_entry_close;
- bi->bi_tool_entry_first = glue_tool_entry_first;
- bi->bi_tool_entry_next = glue_tool_entry_next;
- bi->bi_tool_entry_get = glue_tool_entry_get;
- bi->bi_tool_entry_put = glue_tool_entry_put;
- bi->bi_tool_entry_reindex = glue_tool_entry_reindex;
- bi->bi_tool_sync = glue_tool_sync;
- /* FIXME : will support later */
- bi->bi_tool_dn2id_get = 0;
- bi->bi_tool_id2entry_get = 0;
- bi->bi_tool_entry_modify = 0;
- } else {
- gi = (glueinfo *)ch_realloc(gi,
- sizeof(glueinfo) +
- gi->nodes * sizeof(gluenode));
+ /* Find the overlay instance */
+ oi = (slap_overinfo *)be->bd_info;
+ for ( on=oi->oi_list; on; on=on->on_next ) {
+ if ( on->on_bi.bi_type == glue.on_bi.bi_type )
+ break;
}
- gi->n[gi->nodes].be = be;
- dnParent( &be->be_nsuffix[0], &gi->n[gi->nodes].pdn );
- gi->nodes++;
+ assert( on != NULL );
+ gi = on->on_bi.bi_private;
+ gi = (glueinfo *)ch_realloc( gi, sizeof(glueinfo) +
+ gi->gi_nodes * sizeof(gluenode));
+ gi->gi_n[gi->gi_nodes].gn_be = ga->ga_be;
+ dnParent( &ga->ga_be->be_nsuffix[0],
+ &gi->gi_n[gi->gi_nodes].gn_pdn );
+ gi->gi_nodes++;
+ on->on_bi.bi_private = gi;
+ break;
}
- if (gi) {
- /* One more node for the master */
- gi = (glueinfo *)ch_realloc(gi,
- sizeof(glueinfo) + gi->nodes * sizeof(gluenode));
- gi->n[gi->nodes].be = &gi->bd;
- dnParent( &b1->be_nsuffix[0], &gi->n[gi->nodes].pdn );
- gi->nodes++;
- b1->bd_info = (BackendInfo *)gi;
+ if ( !be ) {
+ Debug( LDAP_DEBUG_ANY, "glue: no superior found for sub %s!\n",
+ ga->ga_be->be_suffix[0].bv_val, 0, 0 );
+ rc = LDAP_NO_SUCH_OBJECT;
}
+ ch_free( ga );
+ if ( rc ) break;
+ }
+
+ ga_list = gnext;
+
+ return rc;
+}
+
+int
+glue_sub_add( BackendDB *be, int advert, int online )
+{
+ glue_Addrec *ga;
+ int rc = 0;
+
+ if ( overlay_is_inst( be, "glue" )) {
+ Debug( LDAP_DEBUG_ANY, "glue: backend %s already has glue overlay, "
+ "cannot be a subordinate!\n",
+ be->be_suffix[0].bv_val, 0, 0 );
+ return LDAP_OTHER;
}
- /* If there are any unresolved subordinates left, something is wrong */
- return cont;
+ SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_GLUE_SUBORDINATE;
+ if ( advert )
+ SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_GLUE_ADVERTISE;
+
+ ga = ch_malloc( sizeof( glue_Addrec ));
+ ga->ga_next = ga_list;
+ ga->ga_be = be;
+ ga_list = ga;
+
+ if ( online )
+ rc = glue_sub_attach();
+
+ return rc;
+}
+
+int
+glue_sub_init()
+{
+ glue.on_bi.bi_type = "glue";
+
+ glue.on_bi.bi_db_init = glue_db_init;
+ glue.on_bi.bi_db_close = glue_db_close;
+ glue.on_bi.bi_db_destroy = glue_db_destroy;
+
+ glue.on_bi.bi_op_search = glue_op_search;
+ glue.on_bi.bi_op_modify = glue_op_func;
+ glue.on_bi.bi_op_modrdn = glue_op_func;
+ glue.on_bi.bi_op_add = glue_op_func;
+ glue.on_bi.bi_op_delete = glue_op_func;
+ glue.on_bi.bi_extended = glue_op_func;
+
+ glue.on_bi.bi_chk_referrals = glue_chk_referrals;
+ glue.on_bi.bi_chk_controls = glue_chk_controls;
+ glue.on_bi.bi_entry_get_rw = glue_entry_get_rw;
+ glue.on_bi.bi_entry_release_rw = glue_entry_release_rw;
+
+ glue.on_response = glue_response;
+
+ return overlay_register( &glue );
}
projects / openldap / blobdiff