diff options
Diffstat (limited to 'servers/slapd/root_dse.c')
| -rw-r--r-- | servers/slapd/root_dse.c | 542 |
1 files changed, 542 insertions, 0 deletions
diff --git a/servers/slapd/root_dse.c b/servers/slapd/root_dse.c new file mode 100644 index 0000000..368bd9b --- /dev/null +++ b/servers/slapd/root_dse.c @@ -0,0 +1,542 @@ +/* root_dse.c - Provides the Root DSA-Specific Entry */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1999-2022 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>. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/string.h> + +#include "slap.h" +#include <ldif.h> +#include "lber_pvt.h" + +#ifdef LDAP_SLAPI +#include "slapi/slapi.h" +#endif + +static struct berval builtin_supportedFeatures[] = { + BER_BVC(LDAP_FEATURE_MODIFY_INCREMENT), /* Modify/increment */ + BER_BVC(LDAP_FEATURE_ALL_OP_ATTRS), /* All Op Attrs (+) */ + BER_BVC(LDAP_FEATURE_OBJECTCLASS_ATTRS), /* OCs in Attrs List (@class) */ + BER_BVC(LDAP_FEATURE_ABSOLUTE_FILTERS), /* (&) and (|) search filters */ + BER_BVC(LDAP_FEATURE_LANGUAGE_TAG_OPTIONS), /* Language Tag Options */ + BER_BVC(LDAP_FEATURE_LANGUAGE_RANGE_OPTIONS), /* Language Range Options */ +#ifdef LDAP_DEVEL + BER_BVC(LDAP_FEATURE_SUBORDINATE_SCOPE), /* "children" search scope */ +#endif + BER_BVNULL +}; +static struct berval *supportedFeatures; + +static Entry *usr_attr = NULL; + +/* + * allow modules to register functions that muck with the root DSE entry + */ + +typedef struct entry_info_t { + SLAP_ENTRY_INFO_FN func; + void *arg; + struct entry_info_t *next; +} entry_info_t; + +static entry_info_t *extra_info; + +int +entry_info_register( SLAP_ENTRY_INFO_FN func, void *arg ) +{ + entry_info_t *ei = ch_calloc( 1, sizeof( entry_info_t ) ); + + ei->func = func; + ei->arg = arg; + + ei->next = extra_info; + extra_info = ei; + + return 0; +} + +int +entry_info_unregister( SLAP_ENTRY_INFO_FN func, void *arg ) +{ + entry_info_t **eip; + + for ( eip = &extra_info; *eip != NULL; eip = &(*eip)->next ) { + if ( (*eip)->func == func && (*eip)->arg == arg ) { + entry_info_t *ei = *eip; + + *eip = ei->next; + + ch_free( ei ); + + return 0; + } + } + + return -1; +} + +void +entry_info_destroy( void ) +{ + entry_info_t **eip; + + for ( eip = &extra_info; *eip != NULL; ) { + entry_info_t *ei = *eip; + + eip = &(*eip)->next; + + ch_free( ei ); + } +} + +/* + * Allow modules to register supported features + */ + +static int +supported_feature_init( void ) +{ + int i; + + if ( supportedFeatures != NULL ) { + return 0; + } + + for ( i = 0; !BER_BVISNULL( &builtin_supportedFeatures[ i ] ); i++ ) + ; + + supportedFeatures = ch_calloc( sizeof( struct berval ), i + 1 ); + if ( supportedFeatures == NULL ) { + return -1; + } + + for ( i = 0; !BER_BVISNULL( &builtin_supportedFeatures[ i ] ); i++ ) { + ber_dupbv( &supportedFeatures[ i ], &builtin_supportedFeatures[ i ] ); + } + BER_BVZERO( &supportedFeatures[ i ] ); + + return 0; +} + +int +supported_feature_destroy( void ) +{ + int i; + + if ( supportedFeatures == NULL ) { + return 0; + } + + for ( i = 0; !BER_BVISNULL( &supportedFeatures[ i ] ); i++ ) { + ch_free( supportedFeatures[ i ].bv_val ); + } + + ch_free( supportedFeatures ); + supportedFeatures = NULL; + + return 0; +} + +int +supported_feature_load( struct berval *f ) +{ + struct berval *tmp; + int i; + + supported_feature_init(); + + for ( i = 0; !BER_BVISNULL( &supportedFeatures[ i ] ); i++ ) + ; + + tmp = ch_realloc( supportedFeatures, sizeof( struct berval ) * ( i + 2 ) ); + if ( tmp == NULL ) { + return -1; + } + supportedFeatures = tmp; + + ber_dupbv( &supportedFeatures[ i ], f ); + BER_BVZERO( &supportedFeatures[ i + 1 ] ); + + return 0; +} + +int +root_dse_info( + Connection *conn, + Entry **entry, + const char **text ) +{ + Entry *e; + struct berval val; +#ifdef LDAP_SLAPI + struct berval *bv; +#endif + int i, j; + char ** supportedSASLMechanisms; + BackendDB *be; + + AttributeDescription *ad_structuralObjectClass + = slap_schema.si_ad_structuralObjectClass; + AttributeDescription *ad_objectClass + = slap_schema.si_ad_objectClass; + AttributeDescription *ad_namingContexts + = slap_schema.si_ad_namingContexts; +#ifdef LDAP_SLAPI + AttributeDescription *ad_supportedExtension + = slap_schema.si_ad_supportedExtension; +#endif + AttributeDescription *ad_supportedLDAPVersion + = slap_schema.si_ad_supportedLDAPVersion; + AttributeDescription *ad_supportedSASLMechanisms + = slap_schema.si_ad_supportedSASLMechanisms; + AttributeDescription *ad_supportedFeatures + = slap_schema.si_ad_supportedFeatures; + AttributeDescription *ad_monitorContext + = slap_schema.si_ad_monitorContext; + AttributeDescription *ad_configContext + = slap_schema.si_ad_configContext; + AttributeDescription *ad_ref + = slap_schema.si_ad_ref; + + e = entry_alloc(); + if( e == NULL ) { + Debug( LDAP_DEBUG_ANY, + "root_dse_info: entry_alloc failed" ); + return LDAP_OTHER; + } + + e->e_attrs = NULL; + e->e_name.bv_val = ch_strdup( LDAP_ROOT_DSE ); + e->e_name.bv_len = sizeof( LDAP_ROOT_DSE )-1; + e->e_nname.bv_val = ch_strdup( LDAP_ROOT_DSE ); + e->e_nname.bv_len = sizeof( LDAP_ROOT_DSE )-1; + + /* the DN is an empty string so no pretty/normalization is needed */ + assert( !e->e_name.bv_len ); + assert( !e->e_nname.bv_len ); + + e->e_private = NULL; + + /* FIXME: is this really needed? */ + BER_BVSTR( &val, "top" ); + if( attr_merge_one( e, ad_objectClass, &val, NULL ) ) { +fail: + entry_free( e ); + return LDAP_OTHER; + } + + BER_BVSTR( &val, "OpenLDAProotDSE" ); + if( attr_merge_one( e, ad_objectClass, &val, NULL ) ) { + goto fail; + } + if( attr_merge_one( e, ad_structuralObjectClass, &val, NULL ) ) { + goto fail; + } + + LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) { + if ( be->be_suffix == NULL + || be->be_nsuffix == NULL ) { + /* no suffix! */ + continue; + } + if ( SLAP_DBHIDDEN( be )) { + continue; + } + if ( SLAP_MONITOR( be )) { + if( attr_merge_one( e, ad_monitorContext, + &be->be_suffix[0], + &be->be_nsuffix[0] ) ) + { + goto fail; + } + continue; + } + if ( SLAP_CONFIG( be )) { + if( attr_merge_one( e, ad_configContext, + &be->be_suffix[0], + & be->be_nsuffix[0] ) ) + { + goto fail; + } + continue; + } + if ( SLAP_GLUE_SUBORDINATE( be ) && !SLAP_GLUE_ADVERTISE( be ) ) { + continue; + } + if ( attr_merge( e, ad_namingContexts, + be->be_suffix, be->be_nsuffix ) ) { + goto fail; + } + } + + /* altServer unsupported */ + + /* supportedControl */ + if ( controls_root_dse_info( e ) != 0 ) { + goto fail; + } + + /* supportedExtension */ + if ( exop_root_dse_info( e ) != 0 ) { + goto fail; + } + +#ifdef LDAP_SLAPI + /* netscape supportedExtension */ + for ( i = 0; (bv = slapi_int_get_supported_extop(i)) != NULL; i++ ) { + if( attr_merge_one( e, ad_supportedExtension, bv, NULL ) ) { + goto fail; + } + } +#endif /* LDAP_SLAPI */ + + /* supportedFeatures */ + if ( supportedFeatures == NULL ) { + supported_feature_init(); + } + + if( attr_merge( e, ad_supportedFeatures, supportedFeatures, NULL ) ) { + goto fail; + } + + /* supportedLDAPVersion */ + /* don't publish version 2 as we don't really support it + * (even when configured to accept version 2 Bind requests) + * and the value would never be used by true LDAPv2 (or LDAPv3) + * clients. + */ + for ( i=LDAP_VERSION3; i<=LDAP_VERSION_MAX; i++ ) { + char buf[sizeof("255")]; + snprintf(buf, sizeof buf, "%d", i); + val.bv_val = buf; + val.bv_len = strlen( val.bv_val ); + if( attr_merge_one( e, ad_supportedLDAPVersion, &val, NULL ) ) { + goto fail; + } + } + + /* supportedSASLMechanism */ + supportedSASLMechanisms = slap_sasl_mechs( conn ); + + if( supportedSASLMechanisms != NULL ) { + for ( i=0; supportedSASLMechanisms[i] != NULL; i++ ) { + val.bv_val = supportedSASLMechanisms[i]; + val.bv_len = strlen( val.bv_val ); + if( attr_merge_one( e, ad_supportedSASLMechanisms, &val, NULL ) ) { + ldap_charray_free( supportedSASLMechanisms ); + goto fail; + } + } + ldap_charray_free( supportedSASLMechanisms ); + } + + if ( default_referral != NULL ) { + if( attr_merge( e, ad_ref, default_referral, NULL /* FIXME */ ) ) { + goto fail; + } + } + + if( usr_attr != NULL) { + Attribute *a; + for( a = usr_attr->e_attrs; a != NULL; a = a->a_next ) { + if( attr_merge( e, a->a_desc, a->a_vals, + (a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) ) + { + goto fail; + } + } + } + + if ( extra_info ) { + entry_info_t *ei = extra_info; + + for ( ; ei; ei = ei->next ) { + ei->func( ei->arg, e ); + } + } + + *entry = e; + return LDAP_SUCCESS; +} + +int +root_dse_init( void ) +{ + return 0; +} + +int +root_dse_destroy( void ) +{ + if ( usr_attr ) { + entry_free( usr_attr ); + usr_attr = NULL; + } + + return 0; +} + +/* + * Read the entries specified in fname and merge the attributes + * to the user defined rootDSE. Note thaat if we find any errors + * what so ever, we will discard the entire entries, print an + * error message and return. + */ +int +root_dse_read_file( const char *fname ) +{ + struct LDIFFP *fp; + int rc = 0, lmax = 0, ldifrc; + unsigned long lineno = 0; + char *buf = NULL; + + if ( (fp = ldif_open( fname, "r" )) == NULL ) { + Debug( LDAP_DEBUG_ANY, + "root_dse_read_file: could not open rootdse attr file \"%s\" - absolute path?\n", + fname ); + perror( fname ); + return EXIT_FAILURE; + } + + usr_attr = entry_alloc(); + if( usr_attr == NULL ) { + Debug( LDAP_DEBUG_ANY, + "root_dse_read_file: entry_alloc failed" ); + ldif_close( fp ); + return LDAP_OTHER; + } + usr_attr->e_attrs = NULL; + + while(( ldifrc = ldif_read_record( fp, &lineno, &buf, &lmax )) > 0 ) { + Entry *e = str2entry( buf ); + Attribute *a; + + if( e == NULL ) { + Debug( LDAP_DEBUG_ANY, "root_dse_read_file: " + "could not parse entry (file=\"%s\" line=%lu)\n", + fname, lineno ); + rc = LDAP_OTHER; + break; + } + + /* make sure the DN is the empty DN */ + if( e->e_nname.bv_len ) { + Debug( LDAP_DEBUG_ANY, + "root_dse_read_file: invalid rootDSE " + "- dn=\"%s\" (file=\"%s\" line=%lu)\n", + e->e_dn, fname, lineno ); + entry_free( e ); + rc = LDAP_OTHER; + break; + } + + /* + * we found a valid entry, so walk thru all the attributes in the + * entry, and add each attribute type and description to the + * usr_attr entry + */ + + for(a = e->e_attrs; a != NULL; a = a->a_next) { + if( attr_merge( usr_attr, a->a_desc, a->a_vals, + (a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) ) + { + rc = LDAP_OTHER; + break; + } + } + + entry_free( e ); + if (rc) break; + } + + if ( ldifrc < 0 ) + rc = LDAP_OTHER; + + if (rc) { + entry_free( usr_attr ); + usr_attr = NULL; + } + + ch_free( buf ); + + ldif_close( fp ); + + Debug(LDAP_DEBUG_CONFIG, "rootDSE file=\"%s\" read.\n", fname ); + return rc; +} + +int +slap_discover_feature( + slap_bindconf *sb, + const char *attr, + const char *val ) +{ + LDAP *ld = NULL; + LDAPMessage *res = NULL, *entry; + int rc, i; + struct berval bv_val, + **values = NULL; + char *attrs[ 2 ] = { NULL, NULL }; + + rc = slap_client_connect( &ld, sb ); + if ( rc != LDAP_SUCCESS ) { + goto done; + } + + attrs[ 0 ] = (char *) attr; + rc = ldap_search_ext_s( ld, "", LDAP_SCOPE_BASE, "(objectClass=*)", + attrs, 0, NULL, NULL, NULL, 0, &res ); + if ( rc != LDAP_SUCCESS ) { + goto done; + } + + entry = ldap_first_entry( ld, res ); + if ( entry == NULL ) { + goto done; + } + + values = ldap_get_values_len( ld, entry, attrs[ 0 ] ); + if ( values == NULL ) { + rc = LDAP_NO_SUCH_ATTRIBUTE; + goto done; + } + + ber_str2bv( val, 0, 0, &bv_val ); + for ( i = 0; values[ i ] != NULL; i++ ) { + if ( bvmatch( &bv_val, values[ i ] ) ) { + rc = LDAP_COMPARE_TRUE; + goto done; + } + } + + rc = LDAP_COMPARE_FALSE; + +done:; + if ( values != NULL ) { + ldap_value_free_len( values ); + } + + if ( res != NULL ) { + ldap_msgfree( res ); + } + + ldap_unbind_ext( ld, NULL, NULL ); + + return rc; +} + |