C portability from HEAD

libraries/liblunicode/ucstr.c

@@ -12,13 +12,12 @@
 
 #include <lber.h>
 
-#define	malloc(x)	ber_memalloc(x)
-#define	realloc(x,y)	ber_memrealloc(x,y)
-#define	free(x)		ber_memfree(x)
-
 #include <ldap_utf8.h>
 #include <ldap_pvt_uc.h>
 
+#define	malloc(x)	ber_memalloc(x)
+#define	realloc(x,y)	ber_memrealloc(x,y)
+#define	free(x)		ber_memfree(x)
 
 int ucstrncmp(
 	const ldap_unicode_t *u1,

servers/slapd/backglue.c

+/* backglue.c - backend glue routines */
+/* $OpenLDAP$ */
+/*
+ * Copyright 2001-2002 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+
+/*
+ * Functions to glue a bunch of other backends into a single tree.
+ * 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.
+ *  -- Howard Chu
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/socket.h>
+
+#define SLAPD_TOOLS
+#include "slap.h"
+
+typedef struct gluenode {
+	BackendDB *be;
+	struct berval pdn;
+} gluenode;
+
+typedef struct glueinfo {
+	BackendDB *be;
+	int nodes;
+	gluenode n[1];
+} glueinfo;
+
+static int glueMode;
+static BackendDB *glueBack;
+
+/* Just like select_backend, but only for our backends */
+static BackendDB *
+glue_back_select (
+	BackendDB *be,
+	const char *dn
+)
+{
+	glueinfo *gi = (glueinfo *) be->be_private;
+	struct berval bv;
+	int i;
+
+	bv.bv_len = strlen(dn);
+	bv.bv_val = (char *) dn;
+
+	for (i = 0; i<gi->nodes; i++) {
+		if (dnIsSuffix(&bv, gi->n[i].be->be_nsuffix[0])) {
+			return gi->n[i].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;
+
+	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->be_private;
+	static int glueOpened = 0;
+	int rc = 0;
+
+	if (glueOpened) return 0;
+
+	glueOpened = 1;
+
+	gi->be->be_acl = be->be_acl;
+
+	if (gi->be->bd_info->bi_db_open)
+		rc = gi->be->bd_info->bi_db_open(gi->be);
+
+	return rc;
+}
+
+static int
+glue_back_db_close (
+	BackendDB *be
+)
+{
+	glueinfo *gi = (glueinfo *)be->be_private;
+	static int glueClosed = 0;
+
+	if (glueClosed) return 0;
+
+	glueClosed = 1;
+
+	/* Close the master */
+	if (gi->be->bd_info->bi_db_close)
+		gi->be->bd_info->bi_db_close( gi->be );
+
+	return 0;
+}
+
+static int
+glue_back_db_destroy (
+	BackendDB *be
+)
+{
+	glueinfo *gi = (glueinfo *)be->be_private;
+
+	if (gi->be->bd_info->bi_db_destroy)
+		gi->be->bd_info->bi_db_destroy( gi->be );
+	free (gi->be);
+	free (gi);
+	return 0;
+}
+
+typedef struct glue_state {
+	int err;
+	int nentries;
+	int matchlen;
+	char *matched;
+	int nrefs;
+	BerVarray refs;
+	slap_callback *prevcb;
+} glue_state;
+
+static void
+glue_back_response (
+	Connection *conn,
+	Operation *op,
+	ber_tag_t tag,
+	ber_int_t msgid,
+	ber_int_t err,
+	const char *matched,
+	const char *text,
+	BerVarray ref,
+	const char *resoid,
+	struct berval *resdata,
+	struct berval *sasldata,
+	LDAPControl **ctrls
+)
+{
+	glue_state *gs = op->o_callback->sc_private;
+
+	if (err == LDAP_SUCCESS || gs->err != LDAP_SUCCESS)
+		gs->err = err;
+	if (gs->err == LDAP_SUCCESS && gs->matched) {
+		free (gs->matched);
+		gs->matchlen = 0;
+	}
+	if (gs->err != LDAP_SUCCESS && matched) {
+		int len;
+		len = strlen (matched);
+		if (len > gs->matchlen) {
+			if (gs->matched)
+				free (gs->matched);
+			gs->matched = ch_strdup (matched);
+			gs->matchlen = len;
+		}
+	}
+	if (ref) {
+		int i, j, k;
+		BerVarray new;
+
+		for (i=0; ref[i].bv_val; i++);
+
+		j = gs->nrefs;
+		if (!j) {
+			new = ch_malloc ((i+1)*sizeof(struct berval));
+		} else {
+			new = ch_realloc(gs->refs,
+				(j+i+1)*sizeof(struct berval));
+		}
+		for (k=0; k<i; j++,k++) {
+			ber_dupbv( &new[j], &ref[k] );
+		}
+		new[j].bv_val = NULL;
+		gs->nrefs = j;
+		gs->refs = new;
+	}
+}
+
+static void
+glue_back_sresult (
+	Connection *c,
+	Operation *op,
+	ber_int_t err,
+	const char *matched,
+	const char *text,
+	BerVarray refs,
+	LDAPControl **ctrls,
+	int nentries
+)
+{
+	glue_state *gs = op->o_callback->sc_private;
+
+	gs->nentries += nentries;
+	glue_back_response (c, op, 0, 0, err, matched, text, refs,
+			    NULL, NULL, NULL, ctrls);
+}
+
+static int
+glue_back_sendentry (
+	BackendDB *be,
+	Connection *c,
+	Operation *op,
+	Entry *e,
+	AttributeName *an,
+	int ao,
+	LDAPControl **ctrls
+)
+{
+	slap_callback *tmp = op->o_callback;
+	glue_state *gs = tmp->sc_private;
+	int rc;
+
+	op->o_callback = gs->prevcb;
+	if (op->o_callback && op->o_callback->sc_sendentry) {
+		rc = op->o_callback->sc_sendentry(be, c, op, e, an, ao, ctrls);
+	} else {
+		rc = send_search_entry(be, c, op, e, an, ao, ctrls);
+	}
+	op->o_callback = tmp;
+	return rc;
+}
+
+static int
+glue_back_search (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	struct berval *dn,
+	struct berval *ndn,
+	int scope,
+	int deref,
+	int slimit,
+	int tlimit,
+	Filter *filter,
+	struct berval *filterstr,
+	AttributeName *attrs,
+	int attrsonly
+)
+{
+	glueinfo *gi = (glueinfo *)b0->be_private;
+	BackendDB *be;
+	int i, rc, t2limit = 0, s2limit = 0;
+	long stoptime = 0;
+	struct berval bv;
+	glue_state gs = {0};
+	slap_callback cb;
+
+	cb.sc_response = glue_back_response;
+	cb.sc_sresult = glue_back_sresult;
+	cb.sc_sendentry = glue_back_sendentry;
+	cb.sc_private = &gs;
+
+	gs.prevcb = op->o_callback;
+
+	if (tlimit) {
+		stoptime = slap_get_time () + tlimit;
+	}
+
+	switch (scope) {
+	case LDAP_SCOPE_BASE:
+		be = glue_back_select (b0, ndn->bv_val);
+
+		if (be && be->be_search) {
+			rc = be->be_search (be, conn, op, dn, ndn, scope,
+				   deref, slimit, tlimit, filter, filterstr,
+					    attrs, attrsonly);
+		} else {
+			rc = LDAP_UNWILLING_TO_PERFORM;
+			send_ldap_result (conn, op, rc, NULL,
+				      "No search target found", NULL, NULL);
+		}
+		return rc;
+
+	case LDAP_SCOPE_ONELEVEL:
+	case LDAP_SCOPE_SUBTREE:
+		op->o_callback = &cb;
+
+		/*
+		 * Execute in reverse order, most general first 
+		 */
+		for (i = gi->nodes-1; i >= 0; i--) {
+			if (!gi->n[i].be || !gi->n[i].be->be_search)
+				continue;
+			if (tlimit) {
+				t2limit = stoptime - slap_get_time ();
+				if (t2limit <= 0)
+					break;
+			}
+			if (slimit) {
+				s2limit = slimit - gs.nentries;
+				if (s2limit <= 0)
+					break;
+			}
+			/*
+			 * check for abandon 
+			 */
+			ldap_pvt_thread_mutex_lock (&op->o_abandonmutex);
+			rc = op->o_abandon;
+			ldap_pvt_thread_mutex_unlock (&op->o_abandonmutex);
+			if (rc) {
+				rc = 0;
+				goto done;
+			}
+			be = gi->n[i].be;
+			if (scope == LDAP_SCOPE_ONELEVEL && 
+				dn_match(&gi->n[i].pdn, ndn)) {
+				rc = be->be_search (be, conn, op,
+					be->be_suffix[0], be->be_nsuffix[0],
+					LDAP_SCOPE_BASE, deref,
+					s2limit, t2limit, filter, filterstr,
+					attrs, attrsonly);
+
+			} else if (scope == LDAP_SCOPE_SUBTREE &&
+				dnIsSuffix(be->be_nsuffix[0], ndn)) {
+				rc = be->be_search (be, conn, op,
+					be->be_suffix[0], be->be_nsuffix[0],
+					scope, deref,
+					s2limit, t2limit, filter, filterstr,
+					attrs, attrsonly);
+
+			} else if (dnIsSuffix(&bv, be->be_nsuffix[0])) {
+				rc = be->be_search (be, conn, op, dn, ndn,
+					scope, deref,
+					s2limit, t2limit, filter, filterstr,
+					attrs, attrsonly);
+			}
+		}
+		break;
+	}
+	op->o_callback = gs.prevcb;
+
+	send_search_result (conn, op, gs.err, gs.matched, NULL,
+		gs.refs, NULL, gs.nentries);
+
+done:
+	if (gs.matched)
+		free (gs.matched);
+	if (gs.refs)
+		ber_bvarray_free(gs.refs);
+	return rc;
+}
+
+static int
+glue_back_bind (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	struct berval *dn,
+	struct berval *ndn,
+	int method,
+	struct berval *cred,
+	struct berval *edn
+)
+{
+	BackendDB *be;
+	int rc;
+ 
+	be = glue_back_select (b0, ndn->bv_val);
+
+	if (be && be->be_bind) {
+		conn->c_authz_backend = be;
+		rc = be->be_bind (be, conn, op, dn, ndn, method, cred, edn);
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		send_ldap_result (conn, op, rc, NULL, "No bind target found",
+				  NULL, NULL);
+	}
+	return rc;
+}
+
+static int
+glue_back_compare (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	struct berval *dn,
+	struct berval *ndn,
+	AttributeAssertion *ava
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, ndn->bv_val);
+
+	if (be && be->be_compare) {
+		rc = be->be_compare (be, conn, op, dn, ndn, ava);
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		send_ldap_result (conn, op, rc, NULL, "No compare target found",
+			NULL, NULL);
+	}
+	return rc;
+}
+
+static int
+glue_back_modify (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	struct berval *dn,
+	struct berval *ndn,
+	Modifications *mod
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, ndn->bv_val);
+
+	if (be && be->be_modify) {
+		rc = be->be_modify (be, conn, op, dn, ndn, mod);
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		send_ldap_result (conn, op, rc, NULL,
+			"No modify target found", NULL, NULL);
+	}
+	return rc;
+}
+
+static int
+glue_back_modrdn (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	struct berval *dn,
+	struct berval *ndn,
+	struct berval *newrdn,
+	struct berval *nnewrdn,
+	int del,
+	struct berval *newsup,
+	struct berval *nnewsup
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, ndn->bv_val);
+
+	if (be && be->be_modrdn) {
+		rc = be->be_modrdn (be, conn, op, dn, ndn,
+			newrdn, nnewrdn, del, newsup, nnewsup );
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		send_ldap_result (conn, op, rc, NULL,
+			"No modrdn target found", NULL, NULL);
+	}
+	return rc;
+}
+
+static int
+glue_back_add (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	Entry *e
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, e->e_ndn);
+
+	if (be && be->be_add) {
+		rc = be->be_add (be, conn, op, e);
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		send_ldap_result (conn, op, rc, NULL, "No add target found",
+				  NULL, NULL);
+	}
+	return rc;
+}
+
+static int
+glue_back_delete (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	struct berval *dn,
+	struct berval *ndn
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, ndn->bv_val);
+
+	if (be && be->be_delete) {
+		rc = be->be_delete (be, conn, op, dn, ndn);
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+		send_ldap_result (conn, op, rc, NULL, "No delete target found",
+				  NULL, NULL);
+	}
+	return rc;
+}
+
+static int
+glue_back_release_rw (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	Entry *e,
+	int rw
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, e->e_ndn);
+
+	if (be && be->be_release) {
+		rc = be->be_release (be, conn, op, e, rw);
+	} else {
+		entry_free (e);
+		rc = 0;
+	}
+	return rc;
+}
+
+static int
+glue_back_group (
+	BackendDB *b0,
+	Connection *conn,
+	Operation *op,
+	Entry *target,
+	struct berval *ndn,
+	struct berval *ondn,
+	ObjectClass *oc,
+	AttributeDescription * ad
+)
+{
+	BackendDB *be;
+	int rc;
+
+	be = glue_back_select (b0, ndn->bv_val);
+
+	if (be && be->be_group) {
+		rc = be->be_group (be, conn, op, target, ndn, ondn, oc, ad);
+	} else {
+		rc = LDAP_UNWILLING_TO_PERFORM;
+	}
+	return rc;
+}
+
+static int
+glue_back_attribute (
+	BackendDB *b0,
+	Connection *