/* bind.c - ldap backend bind function */
-
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+/* 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,
+ struct berval *dn,
+ struct berval *ndn,
int method,
- char *mech,
struct berval *cred,
- char **edn
+ struct berval *edn
)
{
struct ldapinfo *li = (struct ldapinfo *) be->be_private;
struct ldapconn *lc;
- *edn = NULL;
+ struct berval mdn = { 0, NULL };
+ int rc = 0;
lc = ldap_back_getconn(li, conn, op);
- if (!lc)
+ if ( !lc ) {
+ return( -1 );
+ }
+
+ /*
+ * Rewrite the bind dn if needed
+ */
+#ifdef ENABLE_REWRITE
+ switch ( rewrite_session( li->rwinfo, "bindDn", dn->bv_val, conn, &mdn.bv_val ) ) {
+ case REWRITE_REGEXEC_OK:
+ if ( mdn.bv_val == NULL ) {
+ mdn.bv_val = ( char * )dn->bv_val;
+ }
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_LDAP, DETAIL1,
+ "[rw] bindDn: \"%s\" -> \"%s\"\n", dn->bv_val, mdn.bv_val, 0 );
+#else /* !NEW_LOGGING */
+ Debug( LDAP_DEBUG_ARGS, "rw> bindDn: \"%s\" -> \"%s\"\n%s",
+ dn->bv_val, mdn.bv_val, "" );
+#endif /* !NEW_LOGGING */
+ break;
+
+ case REWRITE_REGEXEC_UNWILLING:
+ send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
+ NULL, "Unwilling to perform", NULL, NULL );
return( -1 );
- if (ldap_bind_s(lc->ld, dn, cred->bv_val, method) != LDAP_SUCCESS)
- return( ldap_back_op_result(lc, op) );
+ case REWRITE_REGEXEC_ERR:
+ send_ldap_result( conn, op, LDAP_OTHER,
+ NULL, "Operations error", NULL, NULL );
+ return( -1 );
+ }
+#else /* !ENABLE_REWRITE */
+ ldap_back_dn_massage( li, dn, &mdn, 0, 1 );
+#endif /* !ENABLE_REWRITE */
+
+ rc = ldap_bind_s(lc->ld, mdn.bv_val, cred->bv_val, method);
+ if (rc != LDAP_SUCCESS) {
+ rc = ldap_back_op_result( lc, op );
+ } else {
+ lc->bound = 1;
+ }
+
+ if ( li->savecred ) {
+ if ( lc->cred.bv_val )
+ ch_free( lc->cred.bv_val );
+ ber_dupbv( &lc->cred, cred );
+ ldap_set_rebind_proc( lc->ld, ldap_back_rebind, lc );
+ }
+
+ if ( lc->bound_dn.bv_val )
+ ch_free( lc->bound_dn.bv_val );
+ if ( mdn.bv_val != dn->bv_val ) {
+ lc->bound_dn = mdn;
+ } else {
+ ber_dupbv( &lc->bound_dn, dn );
+ }
+
+ return( rc );
+}
+
+/*
+ * 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;
+
+ return ( ( lc1->conn < lc2->conn ) ? -1 : ( ( lc1->conn > lc2-> conn ) ? 1 : 0 ) );
+}
+
+/*
+ * 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;
+
+ return( ( lc1->conn == lc2->conn ) ? -1 : 0 );
+}
+
+#if PRINT_CONNTREE > 0
+static void ravl_print( Avlnode *root, int depth )
+{
+ int i;
+
+ if ( root == 0 )
+ return;
+
+ ravl_print( root->avl_right, depth+1 );
+
+ for ( i = 0; i < depth; i++ )
+ printf( " " );
+
+ printf( "c(%ld) %d\n", ((struct ldapconn *) root->avl_data)->conn->c_connid, root->avl_bf );
+
+ ravl_print( root->avl_left, depth+1 );
+}
+
+static void myprint( Avlnode *root )
+{
+ printf( "********\n" );
+
+ if ( root == 0 )
+ printf( "\tNULL\n" );
- lc->bound = 1;
- return( 0 );
+ else
+ ravl_print( root, 0 );
+
+ printf( "********\n" );
}
+#endif /* PRINT_CONNTREE */
struct ldapconn *
ldap_back_getconn(struct ldapinfo *li, Connection *conn, Operation *op)
{
- struct ldapconn *lc;
+ struct ldapconn *lc, lc_curr;
LDAP *ld;
+ /* Searches for a ldapconn in the avl tree */
+ lc_curr.conn = conn;
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,
+ int vers = conn->c_protocol;
+ int err = ldap_initialize(&ld, li->url);
+
+ if (err != LDAP_SUCCESS) {
+ err = ldap_back_map_result(err);
+ send_ldap_result( conn, op, err,
NULL, "ldap_init failed", NULL, 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, &vers);
+
lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
lc->conn = conn;
lc->ld = ld;
+
+ lc->cred.bv_len = 0;
+ lc->cred.bv_val = NULL;
+
+#ifdef ENABLE_REWRITE
+ /*
+ * Sets a cookie for the rewrite session
+ */
+ ( void )rewrite_session_init( li->rwinfo, conn );
+#endif /* ENABLE_REWRITE */
+
+ if ( lc->conn->c_dn.bv_len != 0 ) {
+
+ /*
+ * Rewrite the bind dn if needed
+ */
+#ifdef ENABLE_REWRITE
+ lc->bound_dn.bv_val = NULL;
+ lc->bound_dn.bv_len = 0;
+ switch ( rewrite_session( li->rwinfo, "bindDn",
+ lc->conn->c_dn.bv_val, conn,
+ &lc->bound_dn.bv_val ) ) {
+ case REWRITE_REGEXEC_OK:
+ if ( lc->bound_dn.bv_val == NULL ) {
+ ber_dupbv( &lc->bound_dn, &lc->conn->c_dn );
+ }
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_LDAP, DETAIL1,
+ "[rw] bindDn: \"%s\" ->"
+ " \"%s\"\n%s",
+ lc->conn->c_dn.bv_val,
+ lc->bound_dn.bv_val, "" );
+#else /* !NEW_LOGGING */
+ Debug( LDAP_DEBUG_ARGS,
+ "rw> bindDn: \"%s\" ->"
+ " \"%s\"\n%s",
+ lc->conn->c_dn.bv_val,
+ lc->bound_dn.bv_val, "" );
+#endif /* !NEW_LOGGING */
+ break;
+
+ case REWRITE_REGEXEC_UNWILLING:
+ send_ldap_result( conn, op,
+ LDAP_UNWILLING_TO_PERFORM,
+ NULL, "Unwilling to perform",
+ NULL, NULL );
+ return( NULL );
+
+ case REWRITE_REGEXEC_ERR:
+ send_ldap_result( conn, op,
+ LDAP_OTHER,
+ NULL, "Operations error",
+ NULL, NULL );
+ return( NULL );
+ }
+#else /* !ENABLE_REWRITE */
+ struct berval bv;
+ ldap_back_dn_massage( li, &lc->conn->c_dn, &bv, 0, 1 );
+ if ( bv.bv_val == lc->conn->c_dn.bv_val )
+ ber_dupbv( &lc->bound_dn, &bv );
+ else
+ lc->bound_dn = bv;
+#endif /* !ENABLE_REWRITE */
+ } else {
+ lc->bound_dn.bv_val = NULL;
+ lc->bound_dn.bv_len = 0;
+ }
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;
+ 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 %ld inserted\n", lc->conn->c_connid, 0, 0);
+#else /* !NEW_LOGGING */
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_getconn: conn %ld inserted\n%s%s",
+ lc->conn->c_connid, "", "" );
+#endif /* !NEW_LOGGING */
+
+ /* Err could be -1 in case a duplicate ldapconn is inserted */
+ if ( err != 0 ) {
+ send_ldap_result( conn, op, LDAP_OTHER,
+ NULL, "internal server error", NULL, NULL );
+ /* better destroy the ldapconn struct? */
+ return( NULL );
+ }
+ } else {
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACK_LDAP, INFO,
+ "ldap_back_getconn: conn %ld inserted\n",
+ lc->conn->c_connid, 0, 0 );
+#else /* !NEW_LOGGING */
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_getconn: conn %ld fetched%s%s\n",
+ lc->conn->c_connid, "", "" );
+#endif /* !NEW_LOGGING */
}
+
return( lc );
}
+/*
+ * 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)
{
- if (lc->bound)
- return;
+ if (lc->bound) {
+ return( lc->bound );
+ }
- if (ldap_bind_s(lc->ld, lc->conn->c_cdn, NULL, LDAP_AUTH_SIMPLE) !=
- LDAP_SUCCESS)
+ if (ldap_bind_s(lc->ld, lc->bound_dn.bv_val, lc->cred.bv_val, LDAP_AUTH_SIMPLE) !=
+ LDAP_SUCCESS) {
ldap_back_op_result(lc, op);
- else
- lc->bound = 1;
+ return( 0 );
+ } /* else */
+ return( lc->bound = 1 );
}
+/*
+ * 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 )
+{
+ struct ldapconn *lc = params;
+
+ 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_map_result(int err)
+{
+ switch(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:
+ return LDAP_OTHER;
+ case LDAP_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:
+ return LDAP_OTHER;
+ case LDAP_CLIENT_LOOP:
+ case LDAP_REFERRAL_LIMIT_EXCEEDED:
+ return LDAP_LOOP_DETECT;
+ default:
+ if LDAP_API_ERROR(err)
+ return LDAP_OTHER;
+ else
+ return err;
+ }
+}
+
+int
ldap_back_op_result(struct ldapconn *lc, Operation *op)
{
- int err;
- char *msg;
- char *match;
+ int err = LDAP_SUCCESS;
+ char *msg = NULL;
+ char *match = NULL;
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);
+ err = ldap_back_map_result(err);
+
+#ifdef ENABLE_REWRITE
+
+ /*
+ * FIXME: need rewrite info for match; mmmh ...
+ */
+ send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
+ /* better test the pointers before freeing? */
+ if ( match ) {
+ free( match );
+ }
+
+#else /* !ENABLE_REWRITE */
+
send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
- free(match);
- free(msg);
+ /* better test the pointers before freeing? */
+ if ( match ) {
+ free( match );
+ }
+
+#endif /* !ENABLE_REWRITE */
+
+ if ( msg ) free( msg );
return( (err==LDAP_SUCCESS) ? 0 : -1 );
}
+
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