--- /dev/null
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2005 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 <ac/string.h>
+#include <slap.h>
+#include <lutil.h>
+
+/* Need dynacl... */
+
+#ifdef SLAP_DYNACL
+
+typedef struct pg_t {
+ slap_style_t pg_style;
+ struct berval pg_pat;
+} pg_t;
+
+static ObjectClass *pg_posixGroup;
+static AttributeDescription *pg_memberUid;
+static ObjectClass *pg_posixAccount;
+static AttributeDescription *pg_uidNumber;
+
+static int pg_dynacl_destroy( void *priv );
+
+static int
+pg_dynacl_parse(
+ const char *fname,
+ int lineno,
+ slap_style_t style,
+ const char *pattern,
+ void **privp )
+{
+ pg_t *pg;
+ int rc;
+ const char *text = NULL;
+ struct berval pat;
+
+ ber_str2bv( pattern, 0, 0, &pat );
+
+ pg = ch_calloc( 1, sizeof( pg_t ) );
+
+ pg->pg_style = style;
+
+ switch ( pg->pg_style ) {
+ case ACL_STYLE_BASE:
+ rc = dnNormalize( 0, NULL, NULL, &pat, &pg->pg_pat, NULL );
+ if ( rc != LDAP_SUCCESS ) {
+ fprintf( stderr, "%s line %d: posixGroup ACL: "
+ "unable to normalize DN \"%s\".\n",
+ fname, lineno, pattern );
+ goto cleanup;
+ }
+ break;
+
+ case ACL_STYLE_EXPAND:
+ ber_dupbv( &pg->pg_pat, &pat );
+ break;
+
+ default:
+ fprintf( stderr, "%s line %d: posixGroup ACL: "
+ "unsupported style \"%s\".\n",
+ fname, lineno, style_strings[ pg->pg_style ] );
+ goto cleanup;
+ }
+
+ if ( pg_posixGroup == NULL ) {
+ pg_posixGroup = oc_find( "posixGroup" );
+ if ( pg_posixGroup == NULL ) {
+ fprintf( stderr, "%s line %d: posixGroup ACL: "
+ "unable to lookup \"posixGroup\" "
+ "objectClass.\n",
+ fname, lineno );
+ goto cleanup;
+ }
+
+ pg_posixAccount = oc_find( "posixAccount" );
+ if ( pg_posixGroup == NULL ) {
+ fprintf( stderr, "%s line %d: posixGroup ACL: "
+ "unable to lookup \"posixAccount\" "
+ "objectClass.\n",
+ fname, lineno );
+ goto cleanup;
+ }
+
+ rc = slap_str2ad( "memberUid", &pg_memberUid, &text );
+ if ( rc != LDAP_SUCCESS ) {
+ fprintf( stderr, "%s line %d: posixGroup ACL: "
+ "unable to lookup \"memberUid\" "
+ "attributeDescription (%d: %s).\n",
+ fname, lineno, rc, text );
+ goto cleanup;
+ }
+
+ rc = slap_str2ad( "uidNumber", &pg_uidNumber, &text );
+ if ( rc != LDAP_SUCCESS ) {
+ fprintf( stderr, "%s line %d: posixGroup ACL: "
+ "unable to lookup \"uidNumber\" "
+ "attributeDescription (%d: %s).\n",
+ fname, lineno, rc, text );
+ goto cleanup;
+ }
+ }
+
+ *privp = (void *)pg;
+ return 0;
+
+cleanup:
+ (void)pg_dynacl_destroy( (void *)pg );
+
+ return 1;
+}
+
+static int
+pg_dynacl_unparse(
+ void *priv,
+ struct berval *bv )
+{
+ pg_t *pg = (pg_t *)priv;
+ char *ptr;
+
+ bv->bv_len = STRLENOF( " dynacl/posixGroup.expand=" ) + pg->pg_pat.bv_len;
+ bv->bv_val = ch_malloc( bv->bv_len + 1 );
+
+ ptr = lutil_strcopy( bv->bv_val, " dynacl/posixGroup" );
+
+ switch ( pg->pg_style ) {
+ case ACL_STYLE_BASE:
+ ptr = lutil_strcopy( ptr, ".exact=" );
+ break;
+
+ case ACL_STYLE_EXPAND:
+ ptr = lutil_strcopy( ptr, ".expand=" );
+ break;
+
+ default:
+ assert( 0 );
+ }
+
+ ptr = lutil_strncopy( ptr, pg->pg_pat.bv_val, pg->pg_pat.bv_len );
+ ptr[ 0 ] = '\0';
+
+ bv->bv_len = ptr - bv->bv_val;
+
+ return 0;
+}
+
+static int
+pg_dynacl_mask(
+ void *priv,
+ struct slap_op *op,
+ Entry *target,
+ AttributeDescription *desc,
+ struct berval *val,
+ int nmatch,
+ regmatch_t *matches,
+ slap_access_t *grant,
+ slap_access_t *deny )
+{
+ pg_t *pg = (pg_t *)priv;
+ Entry *group = NULL,
+ *user = NULL;
+ int rc;
+ Backend *be = op->o_bd,
+ *group_be = NULL,
+ *user_be = NULL;
+ struct berval group_ndn;
+
+ ACL_INVALIDATE( *deny );
+
+ /* get user */
+ if ( target && dn_match( &target->e_nname, &op->o_ndn ) ) {
+ user = target;
+ rc = LDAP_SUCCESS;
+
+ } else {
+ user_be = op->o_bd = select_backend( &op->o_ndn, 0, 0 );
+ if ( op->o_bd == NULL ) {
+ op->o_bd = be;
+ return 0;
+ }
+ rc = be_entry_get_rw( op, &op->o_ndn, pg_posixAccount, pg_uidNumber, 0, &user );
+ }
+
+ if ( rc != LDAP_SUCCESS || user == NULL ) {
+ op->o_bd = be;
+ return 0;
+ }
+
+ /* get target */
+ if ( pg->pg_style == ACL_STYLE_EXPAND ) {
+ char buf[ 1024 ];
+ struct berval bv;
+
+ bv.bv_len = sizeof( buf ) - 1;
+ bv.bv_val = buf;
+
+ if ( acl_string_expand( &bv, &pg->pg_pat,
+ target->e_nname.bv_val,
+ nmatch, matches ) )
+ {
+ goto cleanup;
+ }
+
+ if ( dnNormalize( 0, NULL, NULL, &bv, &group_ndn,
+ op->o_tmpmemctx ) != LDAP_SUCCESS )
+ {
+ /* did not expand to a valid dn */
+ goto cleanup;
+ }
+
+ } else {
+ group_ndn = pg->pg_pat;
+ }
+
+ if ( target && dn_match( &target->e_nname, &group_ndn ) ) {
+ group = target;
+ rc = LDAP_SUCCESS;
+
+ } else {
+ group_be = op->o_bd = select_backend( &group_ndn, 0, 0 );
+ if ( op->o_bd == NULL ) {
+ goto cleanup;
+ }
+ rc = be_entry_get_rw( op, &group_ndn, pg_posixGroup, pg_memberUid, 0, &group );
+ }
+
+ if ( group_ndn.bv_val != pg->pg_pat.bv_val ) {
+ op->o_tmpfree( group_ndn.bv_val, op->o_tmpmemctx );
+ }
+
+ if ( rc == LDAP_SUCCESS && group != NULL ) {
+ Attribute *a_uid,
+ *a_member;
+
+ a_uid = attr_find( user->e_attrs, pg_uidNumber);
+ if ( !a_uid || !BER_BVISNULL( &a_uid->a_nvals[ 1 ] ) ) {
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+
+ } else {
+ a_member = attr_find( group->e_attrs, pg_memberUid );
+ if ( !a_member ) {
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+
+ } else {
+ rc = value_find_ex( pg_memberUid,
+ SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+ SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+ a_member->a_nvals, &a_uid->a_nvals[ 0 ],
+ op->o_tmpmemctx );
+ }
+ }
+
+ } else {
+ rc = LDAP_NO_SUCH_OBJECT;
+ }
+
+
+ if ( rc == LDAP_SUCCESS ) {
+ ACL_LVL_ASSIGN_WRITE( *grant );
+ }
+
+cleanup:;
+ if ( group != NULL && group != target ) {
+ op->o_bd = group_be;
+ be_entry_release_r( op, group );
+ op->o_bd = be;
+ }
+
+ if ( user != NULL && user != target ) {
+ op->o_bd = user_be;
+ be_entry_release_r( op, group );
+ op->o_bd = be;
+ }
+
+ return 0;
+}
+
+static int
+pg_dynacl_destroy(
+ void *priv )
+{
+ pg_t *pg = (pg_t *)priv;
+
+ if ( pg != NULL ) {
+ if ( !BER_BVISNULL( &pg->pg_pat ) ) {
+ ber_memfree( pg->pg_pat.bv_val );
+ }
+ ch_free( pg );
+ }
+
+ return 0;
+}
+
+static struct slap_dynacl_t pg_dynacl = {
+ "posixGroup",
+ pg_dynacl_parse,
+ pg_dynacl_unparse,
+ pg_dynacl_mask,
+ pg_dynacl_destroy
+};
+
+int
+init_module( int argc, char *argv[] )
+{
+ return slap_dynacl_register( &pg_dynacl );
+}
+
+#endif /* SLAP_DYNACL */
projects / openldap / commitdiff