X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=servers%2Fslapd%2Fbind.c;h=6480cf7fb82b5fcaa375e44e08ab3e2a9737df07;hb=0f30fb0d8f0adbbb7b41fd455c57aa56d64c9853;hp=3be31a9ad39820a85e8eb43c24929a641548f2aa;hpb=2395c6c23cf352c9b8dbedb9cf474be7f8bc64fe;p=openldap diff --git a/servers/slapd/bind.c b/servers/slapd/bind.c index 3be31a9ad3..6480cf7fb8 100644 --- a/servers/slapd/bind.c +++ b/servers/slapd/bind.c @@ -1,7 +1,7 @@ /* bind.c - decode an ldap bind operation and pass it to a backend db */ /* $OpenLDAP$ */ /* - * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved. + * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved. * COPYING RESTRICTIONS APPLY, see COPYRIGHT file */ @@ -41,33 +41,26 @@ do_bind( char *ndn; ber_tag_t tag; int rc = LDAP_SUCCESS; + const char *text; struct berval cred; Backend *be; +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY, "do_bind: conn %d\n", conn->c_connid )); +#else Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 ); +#endif dn = NULL; ndn = NULL; mech = NULL; cred.bv_val = NULL; - ldap_pvt_thread_mutex_lock( &conn->c_mutex ); - - /* Force to connection to "anonymous" until bind succeeds. - * This may need to be relocated or done on a case by case basis - * to handle certain SASL mechanisms. + /* + * Force to connection to "anonymous" until bind succeeds. */ - - if ( conn->c_cdn != NULL ) { - free( conn->c_cdn ); - conn->c_cdn = NULL; - } - - if ( conn->c_dn != NULL ) { - free( conn->c_dn ); - conn->c_dn = NULL; - } - + ldap_pvt_thread_mutex_lock( &conn->c_mutex ); + connection2anonymous( conn ); ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); if ( op->o_dn != NULL ) { @@ -95,30 +88,26 @@ do_bind( * } * * SaslCredentials ::= SEQUENCE { - * mechanism LDAPString, - * credentials OCTET STRING OPTIONAL + * mechanism LDAPString, + * credentials OCTET STRING OPTIONAL * } */ tag = ber_scanf( ber, "{iat" /*}*/, &version, &dn, &method ); if ( tag == LBER_ERROR ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_ERR, + "do_bind: conn %d ber_scanf failed\n", conn->c_connid )); +#else Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 ); +#endif send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, "decoding error" ); rc = -1; goto cleanup; } - ndn = ch_strdup( dn ); - - if ( dn_normalize( ndn ) == NULL ) { - Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n", dn, 0, 0 ); - send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL, - "invalid DN", NULL, NULL ); - goto cleanup; - } - op->o_protocol = version; if( method != LDAP_AUTH_SASL ) { @@ -133,6 +122,10 @@ do_bind( if ( tag == LDAP_TAG_LDAPCRED ) { tag = ber_scanf( ber, "o", &cred ); + } else { + tag = LDAP_TAG_LDAPCRED; + cred.bv_val = NULL; + cred.bv_len = 0; } if ( tag != LBER_ERROR ) { @@ -144,116 +137,288 @@ do_bind( if ( tag == LBER_ERROR ) { send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, - "decoding error" ); - rc = -1; + "decoding error" ); + rc = SLAPD_DISCONNECT; goto cleanup; } if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d get_ctrls failed\n", conn->c_connid )); +#else Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 ); +#endif goto cleanup; } + ndn = ch_strdup( dn ); + + if ( dn_normalize( ndn ) == NULL ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d invalid dn (%s)\n", conn->c_connid, dn )); +#else + Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n", dn, 0, 0 ); +#endif + send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL, + "invalid DN", NULL, NULL ); + goto cleanup; + } + if( method == LDAP_AUTH_SASL ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1, + "do_sasl_bind: conn %d dn (%s) mech %s\n", conn->c_connid, + dn, mech )); +#else Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n", dn, mech, NULL ); +#endif } else { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1, + "do_bind: conn %d version=%ld dn=\"%s\" method=%ld\n", + conn->c_connid, (unsigned long) version, dn, (unsigned long)method )); +#else Debug( LDAP_DEBUG_TRACE, "do_bind: version=%ld dn=\"%s\" method=%ld\n", (unsigned long) version, dn, (unsigned long) method ); +#endif } Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d BIND dn=\"%s\" method=%ld\n", op->o_connid, op->o_opid, ndn, (unsigned long) method, 0 ); if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d unknown version = %ld\n", + conn->c_connid, (unsigned long)version )); +#else Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n", (unsigned long) version, 0, 0 ); +#endif send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, - NULL, "version not supported", NULL, NULL ); + NULL, "requested protocol version not supported", NULL, NULL ); + goto cleanup; + + } else if (( global_disallows & SLAP_DISALLOW_BIND_V2 ) && + version < LDAP_VERSION3 ) + { + send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, + NULL, "requested protocol version not allowed", NULL, NULL ); goto cleanup; } + /* we set connection version regardless of whether bind succeeds + * or not. + */ + ldap_pvt_thread_mutex_lock( &conn->c_mutex ); + conn->c_protocol = version; + ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); + if ( method == LDAP_AUTH_SASL ) { + char *edn; + slap_ssf_t ssf = 0; + if ( version < LDAP_VERSION3 ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d sasl with LDAPv%ld\n", + conn->c_connid, (unsigned long)version )); +#else Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n", (unsigned long) version, 0, 0 ); +#endif send_ldap_disconnect( conn, op, - LDAP_PROTOCOL_ERROR, "sasl bind requires LDAPv3" ); - rc = -1; + LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" ); + rc = SLAPD_DISCONNECT; goto cleanup; } if( mech == NULL || *mech == '\0' ) { +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d no SASL mechanism provided\n", + conn->c_connid )); +#else Debug( LDAP_DEBUG_ANY, "do_bind: no sasl mechanism provided\n", 0, 0, 0 ); +#endif send_ldap_result( conn, op, rc = LDAP_AUTH_METHOD_NOT_SUPPORTED, - NULL, "no sasl mechanism provided", NULL, NULL ); + NULL, "no SASL mechanism provided", NULL, NULL ); goto cleanup; } - if( !charray_inlist( supportedSASLMechanisms, mech ) ) { - Debug( LDAP_DEBUG_ANY, - "do_bind: sasl mechanism=\"%s\" not supported.\n", - mech, 0, 0 ); - send_ldap_result( conn, op, rc = LDAP_AUTH_METHOD_NOT_SUPPORTED, - NULL, "sasl mechanism not supported", NULL, NULL ); + /* check restrictions */ + rc = backend_check_restrictions( NULL, conn, op, mech, &text ); + if( rc != LDAP_SUCCESS ) { + send_ldap_result( conn, op, rc, + NULL, text, NULL, NULL ); goto cleanup; } ldap_pvt_thread_mutex_lock( &conn->c_mutex ); + if ( conn->c_sasl_bind_in_progress ) { + if((strcmp(conn->c_sasl_bind_mech, mech) != 0)) { + /* mechanism changed between bind steps */ + slap_sasl_reset(conn); + } + } else { + conn->c_sasl_bind_mech = mech; + mech = NULL; + } + ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); + + edn = NULL; + rc = slap_sasl_bind( conn, op, dn, ndn, &cred, &edn, &ssf ); + + ldap_pvt_thread_mutex_lock( &conn->c_mutex ); + if( rc == LDAP_SUCCESS ) { + conn->c_dn = edn; + conn->c_authmech = conn->c_sasl_bind_mech; + conn->c_sasl_bind_mech = NULL; + conn->c_sasl_bind_in_progress = 0; + + conn->c_sasl_ssf = ssf; + if( ssf > conn->c_ssf ) { + conn->c_ssf = ssf; + } - if ( conn->c_authmech != NULL ) { - assert( conn->c_bind_in_progress ); - - if((strcmp(conn->c_authmech, mech) != 0)) { - /* mechanism changed, cancel in progress bind */ - conn->c_bind_in_progress = 0; - if( conn->c_authstate != NULL ) { - free(conn->c_authstate); - conn->c_authstate = NULL; - } - free(conn->c_authmech); - conn->c_authmech = NULL; + if( conn->c_dn != NULL ) { + ber_len_t max = sockbuf_max_incoming; + ber_sockbuf_ctrl( conn->c_sb, + LBER_SB_OPT_SET_MAX_INCOMING, &max ); } -#ifdef LDAP_DEBUG + } else if ( rc == LDAP_SASL_BIND_IN_PROGRESS ) { + conn->c_sasl_bind_in_progress = 1; + } else { - assert( !conn->c_bind_in_progress ); - assert( conn->c_authmech == NULL ); - assert( conn->c_authstate == NULL ); -#endif + if ( conn->c_sasl_bind_mech ) { + free( conn->c_sasl_bind_mech ); + conn->c_sasl_bind_mech = NULL; + } + conn->c_sasl_bind_in_progress = 0; } + ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); + + goto cleanup; } else { + /* Not SASL, cancel any in-progress bind */ ldap_pvt_thread_mutex_lock( &conn->c_mutex ); - if ( conn->c_authmech != NULL ) { - assert( conn->c_bind_in_progress ); + if ( conn->c_sasl_bind_mech != NULL ) { + free(conn->c_sasl_bind_mech); + conn->c_sasl_bind_mech = NULL; + } + conn->c_sasl_bind_in_progress = 0; + + slap_sasl_reset( conn ); + ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); + } - /* cancel in progress bind */ - conn->c_bind_in_progress = 0; + if ( method == LDAP_AUTH_SIMPLE ) { + /* accept "anonymous" binds */ + if ( cred.bv_len == 0 || ndn == NULL || *ndn == '\0' ) { + rc = LDAP_SUCCESS; + text = NULL; + + if( cred.bv_len && + ( global_disallows & SLAP_DISALLOW_BIND_ANON_CRED )) + { + /* cred is not empty, disallow */ + rc = LDAP_INVALID_CREDENTIALS; + + } else if ( ndn != NULL && *ndn != '\0' && + ( global_disallows & SLAP_DISALLOW_BIND_ANON_DN )) + { + /* DN is not empty, disallow */ + rc = LDAP_UNWILLING_TO_PERFORM; + text = "unwilling to allow anonymous bind with non-empty DN"; + + } else if ( global_disallows & SLAP_DISALLOW_BIND_ANON ) { + /* disallow */ + rc = LDAP_INAPPROPRIATE_AUTH; + text = "anonymous bind disallowed"; - if( conn->c_authstate != NULL ) { - free(conn->c_authstate); - conn->c_authstate = NULL; + } else { + rc = backend_check_restrictions( NULL, conn, op, mech, &text ); } - free(conn->c_authmech); - conn->c_authmech = NULL; + + /* + * we already forced connection to "anonymous", + * just need to send success + */ + send_ldap_result( conn, op, rc, + NULL, text, NULL, NULL ); +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1, + "do_bind: conn %d v%d anonymous bind\n", + conn->c_connid, version )); +#else + Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n", + version, 0, 0 ); +#endif + goto cleanup; + + } else if ( global_disallows & SLAP_DISALLOW_BIND_SIMPLE ) { + /* disallow simple authentication */ + rc = LDAP_UNWILLING_TO_PERFORM; + text = "unwilling to perform simple authentication"; + + send_ldap_result( conn, op, rc, + NULL, text, NULL, NULL ); +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d v%d simple bind(%s) disallowed\n", + conn->c_connid, version, ndn )); +#else + Debug( LDAP_DEBUG_TRACE, + "do_bind: v%d simple bind(%s) disallowed\n", + version, ndn, 0 ); +#endif + goto cleanup; } - } - conn->c_protocol = version; - ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); +#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND + } else if ( method == LDAP_AUTH_KRBV41 || method == LDAP_AUTH_KRBV42 ) { + if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) { + /* disallow simple authentication */ + rc = LDAP_UNWILLING_TO_PERFORM; + text = "unwilling to perform Kerberos V4 bind"; + + send_ldap_result( conn, op, rc, + NULL, text, NULL, NULL ); +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1, + "do_bind: conn %d v%d Kerberos V4 bind\n", + conn->c_connid, version )); +#else + Debug( LDAP_DEBUG_TRACE, "do_bind: v%d Kerberos V4 bind\n", + version, 0, 0 ); +#endif + goto cleanup; + } +#endif - /* accept null binds */ - if ( ndn == NULL || *ndn == '\0' ) { - /* - * we already forced connection to "anonymous", we just - * need to send success - */ - send_ldap_result( conn, op, LDAP_SUCCESS, - NULL, NULL, NULL, NULL ); + } else { + rc = LDAP_AUTH_METHOD_NOT_SUPPORTED; + text = "unknown authentication method"; + + send_ldap_result( conn, op, rc, + NULL, text, NULL, NULL ); +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_INFO, + "do_bind: conn %d v%d unknown authentication method (%d)\n", + conn->c_connid, version, method )); +#else + Debug( LDAP_DEBUG_TRACE, + "do_bind: v%d unknown authentication method (%d)\n", + version, method, 0 ); +#endif goto cleanup; } @@ -263,14 +428,15 @@ do_bind( * if we don't hold it. */ - if ( (be = select_backend( ndn )) == NULL ) { - if ( cred.bv_len == 0 ) { - send_ldap_result( conn, op, LDAP_SUCCESS, - NULL, NULL, NULL, NULL ); + if ( (be = select_backend( ndn, 0 )) == NULL ) { + if ( default_referral ) { + struct berval **ref = referral_rewrite( default_referral, + NULL, dn, LDAP_SCOPE_DEFAULT ); - } else if ( default_referral ) { send_ldap_result( conn, op, rc = LDAP_REFERRAL, - NULL, NULL, default_referral, NULL ); + NULL, NULL, ref ? ref : default_referral, NULL ); + + ber_bvecfree( ref ); } else { /* noSuchObject is not allowed to be returned by bind */ @@ -281,14 +447,28 @@ do_bind( goto cleanup; } + /* check restrictions */ + rc = backend_check_restrictions( be, conn, op, NULL, &text ); + if( rc != LDAP_SUCCESS ) { + send_ldap_result( conn, op, rc, + NULL, text, NULL, NULL ); + goto cleanup; + } + + conn->c_authz_backend = be; + if ( be->be_bind ) { + int ret; /* alias suffix */ - char *edn; + char *edn = NULL; /* deref suffix alias if appropriate */ ndn = suffix_alias( be, ndn ); - if ( (*be->be_bind)( be, conn, op, dn, ndn, method, mech, &cred, &edn ) == 0 ) { + ret = (*be->be_bind)( be, conn, op, dn, ndn, + method, &cred, &edn ); + + if ( ret == 0 ) { ldap_pvt_thread_mutex_lock( &conn->c_mutex ); conn->c_cdn = dn; @@ -301,8 +481,20 @@ do_bind( ndn = NULL; } - Debug( LDAP_DEBUG_TRACE, "do_bind: bound \"%s\" to \"%s\"\n", - conn->c_cdn, conn->c_dn, method ); + if( conn->c_dn != NULL ) { + ber_len_t max = sockbuf_max_incoming; + ber_sockbuf_ctrl( conn->c_sb, + LBER_SB_OPT_SET_MAX_INCOMING, &max ); + } + +#ifdef NEW_LOGGING + LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1, + "do_bind: conn %d v%d bind: \"%s\" to \"%s\" \n", + conn->c_connid, version, conn->c_cdn, conn->c_dn )); +#else + Debug( LDAP_DEBUG_TRACE, "do_bind: v%d bind: \"%s\" to \"%s\"\n", + version, conn->c_cdn, conn->c_dn ); +#endif ldap_pvt_thread_mutex_unlock( &conn->c_mutex ); @@ -316,7 +508,7 @@ do_bind( } else { send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM, - NULL, "Function not implemented", NULL, NULL ); + NULL, "operation not supported within namingContext", NULL, NULL ); } cleanup: