/* bind.c - ldap backend bind function */
/* $OpenLDAP$ */
-
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1999-2003 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by the Howard Chu for inclusion
+ * in OpenLDAP Software and subsequently enhanced by Pierangelo
+ * Masarati.
+ */
+/* This is an altered version */
/*
* Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
*
* ever read sources, credits should appear in the documentation.
*
* 4. This notice may not be removed or altered.
+ *
+ *
+ *
+ * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
+ *
+ * This software is being modified by Pierangelo Masarati.
+ * The previously reported conditions apply to the modified code as well.
+ * Changes in the original code are highlighted where required.
+ * Credits for the original code go to the author, Howard Chu.
*/
#include "portable.h"
#include <ac/socket.h>
#include <ac/string.h>
+
+#define AVL_INTERNAL
#include "slap.h"
#include "back-ldap.h"
+#define PRINT_CONNTREE 0
+
+static LDAP_REBIND_PROC ldap_back_rebind;
+
int
ldap_back_bind(
- Backend *be,
- Connection *conn,
Operation *op,
- char *dn,
- int method,
- char *mech,
- struct berval *cred,
- char **edn
-)
+ SlapReply *rs )
{
- struct ldapinfo *li = (struct ldapinfo *) be->be_private;
+ struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
struct ldapconn *lc;
- *edn = NULL;
+ struct berval mdn = { 0, NULL };
+ int rc = 0;
+ ber_int_t msgid;
+ dncookie dc;
- lc = ldap_back_getconn(li, conn, op);
- if (!lc)
+ lc = ldap_back_getconn(op, rs);
+ if ( !lc ) {
return( -1 );
+ }
+
+ /*
+ * Rewrite the bind dn if needed
+ */
+ dc.rwmap = &li->rwmap;
+#ifdef ENABLE_REWRITE
+ dc.conn = op->o_conn;
+ dc.rs = rs;
+ dc.ctx = "bindDn";
+#else
+ dc.tofrom = 1;
+ dc.normalized = 0;
+#endif
+ if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
+ send_ldap_result( op, rs );
+ return -1;
+ }
+
+ if ( lc->bound_dn.bv_val ) {
+ ch_free( lc->bound_dn.bv_val );
+ lc->bound_dn.bv_len = 0;
+ lc->bound_dn.bv_val = NULL;
+ }
+ lc->bound = 0;
+ /* method is always LDAP_AUTH_SIMPLE if we got here */
+ rs->sr_err = ldap_sasl_bind(lc->ld, mdn.bv_val, LDAP_SASL_SIMPLE,
+ &op->oq_bind.rb_cred, op->o_ctrls, NULL, &msgid);
+ rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
+ if (rc == LDAP_SUCCESS) {
+ lc->bound = 1;
+ if ( mdn.bv_val != op->o_req_dn.bv_val ) {
+ lc->bound_dn = mdn;
+ } else {
+ ber_dupbv( &lc->bound_dn, &op->o_req_dn );
+ }
+ mdn.bv_val = NULL;
+
+ if ( li->savecred ) {
+ if ( lc->cred.bv_val ) {
+ memset( lc->cred.bv_val, 0, lc->cred.bv_len );
+ ch_free( lc->cred.bv_val );
+ }
+ ber_dupbv( &lc->cred, &op->oq_bind.rb_cred );
+ ldap_set_rebind_proc( lc->ld, ldap_back_rebind, lc );
+ }
+ }
- if (ldap_bind_s(lc->ld, dn, cred->bv_val, method) != LDAP_SUCCESS)
- return( ldap_back_op_result(lc, op) );
+ /* must re-insert if local DN changed as result of bind */
+ if ( lc->bound && !bvmatch(&op->o_req_ndn, &lc->local_dn ) ) {
+ int lerr;
- lc->bound = 1;
- return( 0 );
+ ldap_pvt_thread_mutex_lock( &li->conn_mutex );
+ lc = avl_delete( &li->conntree, (caddr_t)lc,
+ ldap_back_conn_cmp );
+ if ( lc->local_dn.bv_val )
+ ch_free( lc->local_dn.bv_val );
+ ber_dupbv( &lc->local_dn, &op->o_req_ndn );
+ lerr = avl_insert( &li->conntree, (caddr_t)lc,
+ ldap_back_conn_cmp, ldap_back_conn_dup );
+ ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
+ if ( lerr == -1 ) {
+ ldap_back_conn_free( lc );
+ }
+ }
+
+ if ( mdn.bv_val && mdn.bv_val != op->o_req_dn.bv_val ) {
+ free( mdn.bv_val );
+ }
+
+ return( rc );
}
-struct ldapconn *
-ldap_back_getconn(struct ldapinfo *li, Connection *conn, Operation *op)
+/*
+ * ldap_back_conn_cmp
+ *
+ * compares two struct ldapconn based on the value of the conn pointer;
+ * used by avl stuff
+ */
+int
+ldap_back_conn_cmp(
+ const void *c1,
+ const void *c2
+ )
+{
+ const struct ldapconn *lc1 = (const struct ldapconn *)c1;
+ const struct ldapconn *lc2 = (const struct ldapconn *)c2;
+ int rc;
+
+ /* If local DNs don't match, it is definitely not a match */
+ if ( ( rc = ber_bvcmp( &lc1->local_dn, &lc2->local_dn )) )
+ return rc;
+
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
+ return SLAP_PTRCMP(lc1->conn, lc2->conn);
+}
+
+/*
+ * ldap_back_conn_dup
+ *
+ * returns -1 in case a duplicate struct ldapconn has been inserted;
+ * used by avl stuff
+ */
+int
+ldap_back_conn_dup(
+ void *c1,
+ void *c2
+ )
+{
+ struct ldapconn *lc1 = (struct ldapconn *)c1;
+ struct ldapconn *lc2 = (struct ldapconn *)c2;
+
+ /* Cannot have more than one shared session with same DN */
+ if ( dn_match( &lc1->local_dn, &lc2->local_dn ) &&
+ lc1->conn == lc2->conn ) return -1;
+
+ return 0;
+}
+
+#if PRINT_CONNTREE > 0
+static void ravl_print( Avlnode *root, int depth )
{
+ int i;
struct ldapconn *lc;
+
+ if ( root == 0 )
+ return;
+
+ ravl_print( root->avl_right, depth+1 );
+
+ for ( i = 0; i < depth; i++ )
+ printf( " " );
+
+ lc = root->avl_data;
+ printf( "lc(%lx) local(%s) conn(%lx) %d\n",
+ lc, lc->local_dn.bv_val, lc->conn, root->avl_bf );
+
+ ravl_print( root->avl_left, depth+1 );
+}
+
+static void myprint( Avlnode *root )
+{
+ printf( "********\n" );
+
+ if ( root == 0 )
+ printf( "\tNULL\n" );
+
+ else
+ ravl_print( root, 0 );
+
+ printf( "********\n" );
+}
+#endif /* PRINT_CONNTREE */
+
+struct ldapconn *
+ldap_back_getconn(Operation *op, SlapReply *rs)
+{
+ struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
+ struct ldapconn *lc, lc_curr;
LDAP *ld;
+ int is_priv = 0;
+
+ /* Searches for a ldapconn in the avl tree */
+
+ /* Explicit binds must not be shared */
+ if ( op->o_tag == LDAP_REQ_BIND
+ || (op->o_conn
+ && (op->o_bd == op->o_conn->c_authz_backend ))) {
+ lc_curr.conn = op->o_conn;
+ } else {
+ lc_curr.conn = NULL;
+ }
+
+ /* Internal searches are privileged and shared. So is root. */
+ if ( op->o_do_not_cache || be_isroot( li->be, &op->o_ndn ) ) {
+ lc_curr.local_dn = li->be->be_rootndn;
+ lc_curr.conn = NULL;
+ is_priv = 1;
+ } else {
+ lc_curr.local_dn = op->o_ndn;
+ }
ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- for (lc = li->lcs; lc; lc=lc->next)
- if (lc->conn == conn)
- break;
+ lc = (struct ldapconn *)avl_find( li->conntree,
+ (caddr_t)&lc_curr, ldap_back_conn_cmp );
ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
/* Looks like we didn't get a bind. Open a new session... */
if (!lc) {
- ld = ldap_init(li->host, li->port);
- if (!ld) {
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
- NULL, "ldap_init failed", NULL, NULL );
+ int vers = op->o_protocol;
+ rs->sr_err = ldap_initialize(&ld, li->url);
+
+ if (rs->sr_err != LDAP_SUCCESS) {
+ rs->sr_err = ldap_back_map_result(rs);
+ if (rs->sr_text == NULL) {
+ rs->sr_text = "ldap_initialize() failed";
+ }
+ if (op->o_conn) send_ldap_result( op, rs );
+ rs->sr_text = NULL;
return( NULL );
}
+ /* Set LDAP version. This will always succeed: If the client
+ * bound with a particular version, then so can we.
+ */
+ ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION,
+ (const void *)&vers);
+ /* FIXME: configurable? */
+ ldap_set_option(ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON);
+
lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
- lc->conn = conn;
+ lc->conn = lc_curr.conn;
lc->ld = ld;
+ ber_dupbv( &lc->local_dn, &lc_curr.local_dn );
+
+#ifdef ENABLE_REWRITE
+ /*
+ * Sets a cookie for the rewrite session
+ *
+ * FIXME: the o_conn might be no longer valid,
+ * since we may have different entries
+ * for the same connection
+ */
+ ( void )rewrite_session_init( li->rwmap.rwm_rw, op->o_conn );
+#endif /* ENABLE_REWRITE */
+
+ ldap_pvt_thread_mutex_init( &lc->lc_mutex );
+
+ if ( is_priv ) {
+ ber_dupbv( &lc->cred, &li->bindpw );
+ ber_dupbv( &lc->bound_dn, &li->binddn );
+ } else {
+ lc->cred.bv_len = 0;
+ lc->cred.bv_val = NULL;
+ lc->bound_dn.bv_val = NULL;
+ lc->bound_dn.bv_len = 0;
+ if ( op->o_conn && op->o_conn->c_dn.bv_len != 0
+ && ( op->o_bd == op->o_conn->c_authz_backend ) ) {
+
+ dncookie dc;
+ struct berval bv;
+
+ /*
+ * Rewrite the bind dn if needed
+ */
+ dc.rwmap = &li->rwmap;
+#ifdef ENABLE_REWRITE
+ dc.conn = op->o_conn;
+ dc.rs = rs;
+ dc.ctx = "bindDn";
+#else
+ dc.tofrom = 1;
+ dc.normalized = 0;
+#endif
+
+ if ( ldap_back_dn_massage( &dc, &op->o_conn->c_dn, &bv ) ) {
+ send_ldap_result( op, rs );
+ return NULL;
+ }
+
+ if ( bv.bv_val == op->o_conn->c_dn.bv_val ) {
+ ber_dupbv( &lc->bound_dn, &bv );
+ } else {
+ lc->bound_dn = bv;
+ }
+ }
+ }
+
lc->bound = 0;
+
+ /* Inserts the newly created ldapconn in the avl tree */
ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- lc->next = li->lcs;
- li->lcs = lc;
+ rs->sr_err = avl_insert( &li->conntree, (caddr_t)lc,
+ ldap_back_conn_cmp, ldap_back_conn_dup );
+
+#if PRINT_CONNTREE > 0
+ myprint( li->conntree );
+#endif /* PRINT_CONNTREE */
+
ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_LDAP, INFO,
+ "ldap_back_getconn: conn %p inserted\n", (void *) lc, 0, 0);
+#else /* !NEW_LOGGING */
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_getconn: conn %p inserted\n", (void *) lc, 0, 0 );
+#endif /* !NEW_LOGGING */
+
+ /* Err could be -1 in case a duplicate ldapconn is inserted */
+ if ( rs->sr_err != 0 ) {
+ ldap_back_conn_free( lc );
+ if (op->o_conn) {
+ send_ldap_error( op, rs, LDAP_OTHER,
+ "internal server error" );
+ }
+ return( NULL );
+ }
+ } else {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_LDAP, INFO,
+ "ldap_back_getconn: conn %p fetched\n",
+ (void *) lc, 0, 0 );
+#else /* !NEW_LOGGING */
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_getconn: conn %p fetched\n", (void *) lc, 0, 0 );
+#endif /* !NEW_LOGGING */
}
+
return( lc );
}
-void
-ldap_back_dobind(struct ldapconn *lc, Operation *op)
+/*
+ * ldap_back_dobind
+ *
+ * Note: as the check for the value of lc->bound was already here, I removed
+ * it from all the callers, and I made the function return the flag, so
+ * it can be used to simplify the check.
+ */
+int
+ldap_back_dobind( struct ldapconn *lc, Operation *op, SlapReply *rs )
+{
+ int rc;
+ ber_int_t msgid;
+
+ ldap_pvt_thread_mutex_lock( &lc->lc_mutex );
+ if ( !lc->bound ) {
+ rs->sr_err = ldap_sasl_bind(lc->ld, lc->bound_dn.bv_val,
+ LDAP_SASL_SIMPLE, &lc->cred, NULL, NULL, &msgid);
+ rc = ldap_back_op_result( lc, op, rs, msgid, 0 );
+ if (rc == LDAP_SUCCESS) {
+ lc->bound = 1;
+ }
+ }
+ rc = lc->bound;
+ ldap_pvt_thread_mutex_unlock( &lc->lc_mutex );
+ return rc;
+}
+
+/*
+ * ldap_back_rebind
+ *
+ * This is a callback used for chasing referrals using the same
+ * credentials as the original user on this session.
+ */
+static int
+ldap_back_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
+ ber_int_t msgid, void *params )
{
- if (lc->bound)
- return;
+ struct ldapconn *lc = params;
- if (ldap_bind_s(lc->ld, lc->conn->c_cdn, NULL, LDAP_AUTH_SIMPLE) !=
- LDAP_SUCCESS)
- ldap_back_op_result(lc, op);
- else
- lc->bound = 1;
+ return ldap_bind_s( ld, lc->bound_dn.bv_val, lc->cred.bv_val, LDAP_AUTH_SIMPLE );
}
+/* Map API errors to protocol errors... */
+
int
-ldap_back_op_result(struct ldapconn *lc, Operation *op)
+ldap_back_map_result(SlapReply *rs)
{
- int err;
- char *msg;
- char *match;
-
- ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER, &err);
- ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &msg);
- ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
- send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
- free(match);
- free(msg);
- return( (err==LDAP_SUCCESS) ? 0 : -1 );
+ switch(rs->sr_err)
+ {
+ case LDAP_SERVER_DOWN:
+ return LDAP_UNAVAILABLE;
+ case LDAP_LOCAL_ERROR:
+ return LDAP_OTHER;
+ case LDAP_ENCODING_ERROR:
+ case LDAP_DECODING_ERROR:
+ return LDAP_PROTOCOL_ERROR;
+ case LDAP_TIMEOUT:
+ return LDAP_UNAVAILABLE;
+ case LDAP_AUTH_UNKNOWN:
+ return LDAP_AUTH_METHOD_NOT_SUPPORTED;
+ case LDAP_FILTER_ERROR:
+ rs->sr_text = "Filter error";
+ return LDAP_OTHER;
+ case LDAP_USER_CANCELLED:
+ rs->sr_text = "User cancelled";
+ return LDAP_OTHER;
+ case LDAP_PARAM_ERROR:
+ return LDAP_PROTOCOL_ERROR;
+ case LDAP_NO_MEMORY:
+ return LDAP_OTHER;
+ case LDAP_CONNECT_ERROR:
+ return LDAP_UNAVAILABLE;
+ case LDAP_NOT_SUPPORTED:
+ return LDAP_UNWILLING_TO_PERFORM;
+ case LDAP_CONTROL_NOT_FOUND:
+ return LDAP_PROTOCOL_ERROR;
+ case LDAP_NO_RESULTS_RETURNED:
+ return LDAP_NO_SUCH_OBJECT;
+ case LDAP_MORE_RESULTS_TO_RETURN:
+ rs->sr_text = "More results to return";
+ return LDAP_OTHER;
+ case LDAP_CLIENT_LOOP:
+ case LDAP_REFERRAL_LIMIT_EXCEEDED:
+ return LDAP_LOOP_DETECT;
+ default:
+ if LDAP_API_ERROR(rs->sr_err)
+ return LDAP_OTHER;
+ else
+ return rs->sr_err;
+ }
}
+
+int
+ldap_back_op_result(struct ldapconn *lc, Operation *op, SlapReply *rs,
+ ber_int_t msgid, int sendok)
+{
+ struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
+ char *match = NULL;
+ LDAPMessage *res;
+ char *text = NULL;
+
+ rs->sr_text = NULL;
+ rs->sr_matched = NULL;
+
+ if (rs->sr_err == LDAP_SUCCESS) {
+ if (ldap_result(lc->ld, msgid, 1, NULL, &res) == -1) {
+ ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER,
+ &rs->sr_err);
+ } else {
+ int rc = ldap_parse_result(lc->ld, res, &rs->sr_err,
+ &match, &text, NULL, NULL, 1);
+ rs->sr_text = text;
+ if (rc != LDAP_SUCCESS) rs->sr_err = rc;
+ }
+ }
+
+ if (rs->sr_err != LDAP_SUCCESS) {
+ rs->sr_err = ldap_back_map_result(rs);
+
+ /* internal ops must not reply to client */
+ if ( op->o_conn && !op->o_do_not_cache && match ) {
+ struct berval dn, mdn;
+ dncookie dc;
+
+ dc.rwmap = &li->rwmap;
+#ifdef ENABLE_REWRITE
+ dc.conn = op->o_conn;
+ dc.rs = rs;
+ dc.ctx = "matchedDn";
+#else
+ dc.tofrom = 0;
+ dc.normalized = 0;
+#endif
+ ber_str2bv(match, 0, 0, &dn);
+ ldap_back_dn_massage(&dc, &dn, &mdn);
+ rs->sr_matched = mdn.bv_val;
+
+ }
+ }
+ if (op->o_conn && (sendok || rs->sr_err != LDAP_SUCCESS)) {
+ send_ldap_result( op, rs );
+ }
+ if ( match ) {
+ if ( rs->sr_matched != match ) {
+ free( (char *)rs->sr_matched );
+ }
+ rs->sr_matched = NULL;
+ ldap_memfree( match );
+ }
+ if ( text ) {
+ ldap_memfree( text );
+ }
+ rs->sr_text = NULL;
+ return( (rs->sr_err == LDAP_SUCCESS) ? 0 : -1 );
+}
+
projects / openldap / blobdiff