Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 501 insertions, 0 deletions

diff --git a/servers/slapd/cr.c b/servers/slapd/cr.c
new file mode 100644
index 0000000..11f0719
--- /dev/null
+++ b/servers/slapd/cr.c
@@ -0,0 +1,501 @@
+/* cr.c - content rule routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 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/ctype.h>
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+
+struct cindexrec {
+	struct berval	cir_name;
+	ContentRule	*cir_cr;
+};
+
+static Avlnode	*cr_index = NULL;
+static LDAP_STAILQ_HEAD(CRList, ContentRule) cr_list
+	= LDAP_STAILQ_HEAD_INITIALIZER(cr_list);
+
+static int
+cr_index_cmp(
+    const void	*v_cir1,
+    const void	*v_cir2 )
+{
+	const struct cindexrec	*cir1 = v_cir1;
+	const struct cindexrec	*cir2 = v_cir2;
+	int i = cir1->cir_name.bv_len - cir2->cir_name.bv_len;
+	if (i) return i;
+	return strcasecmp( cir1->cir_name.bv_val, cir2->cir_name.bv_val );
+}
+
+static int
+cr_index_name_cmp(
+    const void	*v_name,
+    const void	*v_cir )
+{
+	const struct berval    *name = v_name;
+	const struct cindexrec *cir  = v_cir;
+	int i = name->bv_len - cir->cir_name.bv_len;
+	if (i) return i;
+	return strncasecmp( name->bv_val, cir->cir_name.bv_val, name->bv_len );
+}
+
+ContentRule *
+cr_find( const char *crname )
+{
+	struct berval bv;
+
+	bv.bv_val = (char *)crname;
+	bv.bv_len = strlen( crname );
+
+	return( cr_bvfind( &bv ) );
+}
+
+ContentRule *
+cr_bvfind( struct berval *crname )
+{
+	struct cindexrec	*cir;
+
+	cir = avl_find( cr_index, crname, cr_index_name_cmp );
+
+	if ( cir != NULL ) {
+		return( cir->cir_cr );
+	}
+
+	return( NULL );
+}
+
+static int
+cr_destroy_one( ContentRule *c )
+{
+	assert( c != NULL );
+
+	if (c->scr_auxiliaries) ldap_memfree(c->scr_auxiliaries);
+	if (c->scr_required) ldap_memfree(c->scr_required);
+	if (c->scr_allowed) ldap_memfree(c->scr_allowed);
+	if (c->scr_precluded) ldap_memfree(c->scr_precluded);
+	ldap_contentrule_free((LDAPContentRule *)c);
+
+	return 0;
+}
+
+void
+cr_destroy( void )
+{
+	ContentRule *c;
+
+	avl_free(cr_index, ldap_memfree);
+
+	while( !LDAP_STAILQ_EMPTY(&cr_list) ) {
+		c = LDAP_STAILQ_FIRST(&cr_list);
+		LDAP_STAILQ_REMOVE_HEAD(&cr_list, scr_next);
+
+		cr_destroy_one( c );
+	}
+}
+
+static int
+cr_insert(
+    ContentRule		*scr,
+    const char		**err
+)
+{
+	struct cindexrec	*cir;
+	char			**names;
+
+	assert( scr != NULL );
+
+	if ( scr->scr_oid ) {
+		cir = (struct cindexrec *)
+			ch_calloc( 1, sizeof(struct cindexrec) );
+		cir->cir_name.bv_val = scr->scr_oid;
+		cir->cir_name.bv_len = strlen( scr->scr_oid );
+		cir->cir_cr = scr;
+
+		if ( avl_insert( &cr_index, (caddr_t) cir,
+		                 cr_index_cmp, avl_dup_error ) )
+		{
+			*err = scr->scr_oid;
+			ldap_memfree(cir);
+			return SLAP_SCHERR_CR_DUP;
+		}
+
+		/* FIX: temporal consistency check */
+		assert( cr_bvfind(&cir->cir_name) != NULL );
+	}
+
+	if ( (names = scr->scr_names) ) {
+		while ( *names ) {
+			cir = (struct cindexrec *)
+				ch_calloc( 1, sizeof(struct cindexrec) );
+			cir->cir_name.bv_val = *names;
+			cir->cir_name.bv_len = strlen( *names );
+			cir->cir_cr = scr;
+
+			if ( avl_insert( &cr_index, (caddr_t) cir,
+			                 cr_index_cmp, avl_dup_error ) )
+			{
+				*err = *names;
+				ldap_memfree(cir);
+				return SLAP_SCHERR_CR_DUP;
+			}
+
+			/* FIX: temporal consistency check */
+			assert( cr_bvfind(&cir->cir_name) != NULL );
+
+			names++;
+		}
+	}
+
+	LDAP_STAILQ_INSERT_TAIL(&cr_list, scr, scr_next);
+
+	return 0;
+}
+
+static int
+cr_add_auxiliaries(
+    ContentRule		*scr,
+	int			*op,
+    const char		**err )
+{
+	int naux;
+
+	if( scr->scr_oc_oids_aux == NULL ) return 0;
+	
+	for( naux=0; scr->scr_oc_oids_aux[naux]; naux++ ) {
+		/* count them */ ;
+	}
+
+	scr->scr_auxiliaries = ch_calloc( naux+1, sizeof(ObjectClass *));
+
+	for( naux=0; scr->scr_oc_oids_aux[naux]; naux++ ) {
+		ObjectClass *soc = scr->scr_auxiliaries[naux]
+			= oc_find(scr->scr_oc_oids_aux[naux]);
+		if ( !soc ) {
+			*err = scr->scr_oc_oids_aux[naux];
+			return SLAP_SCHERR_CLASS_NOT_FOUND;
+		}
+
+		if( soc->soc_flags & SLAP_OC_OPERATIONAL &&
+			soc != slap_schema.si_oc_extensibleObject )
+		{
+			(*op)++;
+		}
+
+		if( soc->soc_kind != LDAP_SCHEMA_AUXILIARY ) {
+			*err = scr->scr_oc_oids_aux[naux];
+			return SLAP_SCHERR_CR_BAD_AUX;
+		}
+	}
+
+	scr->scr_auxiliaries[naux] = NULL;
+	return 0;
+}
+
+static int
+cr_create_required(
+    ContentRule		*scr,
+	int			*op,
+    const char		**err )
+{
+    char		**attrs = scr->scr_at_oids_must;
+	char		**attrs1;
+	AttributeType	*sat;
+
+	if ( attrs ) {
+		attrs1 = attrs;
+		while ( *attrs1 ) {
+			sat = at_find(*attrs1);
+			if ( !sat ) {
+				*err = *attrs1;
+				return SLAP_SCHERR_ATTR_NOT_FOUND;
+			}
+
+			if( is_at_operational( sat )) (*op)++;
+
+			if ( at_find_in_list(sat, scr->scr_required) < 0) {
+				if ( at_append_to_list(sat, &scr->scr_required) ) {
+					*err = *attrs1;
+					return SLAP_SCHERR_OUTOFMEM;
+				}
+			} else {
+				*err = *attrs1;
+				return SLAP_SCHERR_CR_BAD_AT;
+			}
+			attrs1++;
+		}
+	}
+	return 0;
+}
+
+static int
+cr_create_allowed(
+    ContentRule		*scr,
+	int			*op,
+    const char		**err )
+{
+    char		**attrs = scr->scr_at_oids_may;
+	char		**attrs1;
+	AttributeType	*sat;
+
+	if ( attrs ) {
+		attrs1 = attrs;
+		while ( *attrs1 ) {
+			sat = at_find(*attrs1);
+			if ( !sat ) {
+				*err = *attrs1;
+				return SLAP_SCHERR_ATTR_NOT_FOUND;
+			}
+
+			if( is_at_operational( sat )) (*op)++;
+
+			if ( at_find_in_list(sat, scr->scr_required) < 0 &&
+				at_find_in_list(sat, scr->scr_allowed) < 0 )
+			{
+				if ( at_append_to_list(sat, &scr->scr_allowed) ) {
+					*err = *attrs1;
+					return SLAP_SCHERR_OUTOFMEM;
+				}
+			} else {
+				*err = *attrs1;
+				return SLAP_SCHERR_CR_BAD_AT;
+			}
+			attrs1++;
+		}
+	}
+	return 0;
+}
+
+static int
+cr_create_precluded(
+    ContentRule		*scr,
+	int			*op,
+    const char		**err )
+{
+    char		**attrs = scr->scr_at_oids_not;
+	char		**attrs1;
+	AttributeType	*sat;
+
+	if ( attrs ) {
+		attrs1 = attrs;
+		while ( *attrs1 ) {
+			sat = at_find(*attrs1);
+			if ( !sat ) {
+				*err = *attrs1;
+				return SLAP_SCHERR_ATTR_NOT_FOUND;
+			}
+
+			if( is_at_operational( sat )) (*op)++;
+
+			/* FIXME: should also make sure attribute type is not
+				a required attribute of the structural class or
+				any auxiliary class */
+			if ( at_find_in_list(sat, scr->scr_required) < 0 &&
+				at_find_in_list(sat, scr->scr_allowed) < 0 &&
+				at_find_in_list(sat, scr->scr_precluded) < 0 )
+			{
+				if ( at_append_to_list(sat, &scr->scr_precluded) ) {
+					*err = *attrs1;
+					return SLAP_SCHERR_OUTOFMEM;
+				}
+			} else {
+				*err = *attrs1;
+				return SLAP_SCHERR_CR_BAD_AT;
+			}
+			attrs1++;
+		}
+	}
+	return 0;
+}
+
+int
+cr_add(
+    LDAPContentRule	*cr,
+	int user,
+	ContentRule **rscr,
+    const char		**err
+)
+{
+	ContentRule	*scr;
+	int		code;
+	int		op = 0;
+	char	*oidm = NULL;
+
+	if ( cr->cr_names != NULL ) {
+		int i;
+
+		for( i=0; cr->cr_names[i]; i++ ) {
+			if( !slap_valid_descr( cr->cr_names[i] ) ) {
+				return SLAP_SCHERR_BAD_DESCR;
+			}
+		}
+	}
+
+	if ( !OID_LEADCHAR( cr->cr_oid[0] )) {
+		/* Expand OID macros */
+		char *oid = oidm_find( cr->cr_oid );
+		if ( !oid ) {
+			*err = cr->cr_oid;
+			return SLAP_SCHERR_OIDM;
+		}
+		if ( oid != cr->cr_oid ) {
+			oidm = cr->cr_oid;
+			cr->cr_oid = oid;
+		}
+	}
+
+	scr = (ContentRule *) ch_calloc( 1, sizeof(ContentRule) );
+	AC_MEMCPY( &scr->scr_crule, cr, sizeof(LDAPContentRule) );
+
+	scr->scr_oidmacro = oidm;
+	scr->scr_sclass = oc_find(cr->cr_oid);
+	if ( !scr->scr_sclass ) {
+		*err = cr->cr_oid;
+		code = SLAP_SCHERR_CLASS_NOT_FOUND;
+		goto fail;
+	}
+
+	/* check object class usage */
+	if( scr->scr_sclass->soc_kind != LDAP_SCHEMA_STRUCTURAL )
+	{
+		*err = cr->cr_oid;
+		code = SLAP_SCHERR_CR_BAD_STRUCT;
+		goto fail;
+	}
+
+	if( scr->scr_sclass->soc_flags & SLAP_OC_OPERATIONAL ) op++;
+
+	code = cr_add_auxiliaries( scr, &op, err );
+	if ( code != 0 ) goto fail;
+
+	code = cr_create_required( scr, &op, err );
+	if ( code != 0 ) goto fail;
+
+	code = cr_create_allowed( scr, &op, err );
+	if ( code != 0 ) goto fail;
+
+	code = cr_create_precluded( scr, &op, err );
+	if ( code != 0 ) goto fail;
+
+	if( user && op ) {
+		code = SLAP_SCHERR_CR_BAD_AUX;
+		goto fail;
+	}
+
+	code = cr_insert(scr,err);
+	if ( code == 0 && rscr )
+		*rscr = scr;
+	return code;
+fail:
+	ch_free( scr );
+	return code;
+}
+
+void
+cr_unparse( BerVarray *res, ContentRule *start, ContentRule *end, int sys )
+{
+	ContentRule *cr;
+	int i, num;
+	struct berval bv, *bva = NULL, idx;
+	char ibuf[32];
+
+	if ( !start )
+		start = LDAP_STAILQ_FIRST( &cr_list );
+
+	/* count the result size */
+	i = 0;
+	for ( cr=start; cr; cr=LDAP_STAILQ_NEXT(cr, scr_next)) {
+		if ( sys && !(cr->scr_flags & SLAP_CR_HARDCODE)) continue;
+		i++;
+		if ( cr == end ) break;
+	}
+	if (!i) return;
+
+	num = i;
+	bva = ch_malloc( (num+1) * sizeof(struct berval) );
+	BER_BVZERO( bva );
+	idx.bv_val = ibuf;
+	if ( sys ) {
+		idx.bv_len = 0;
+		ibuf[0] = '\0';
+	}
+	i = 0;
+	for ( cr=start; cr; cr=LDAP_STAILQ_NEXT(cr, scr_next)) {
+		LDAPContentRule lcr, *lcrp;
+		if ( sys && !(cr->scr_flags & SLAP_CR_HARDCODE)) continue;
+		if ( cr->scr_oidmacro ) {
+			lcr = cr->scr_crule;
+			lcr.cr_oid = cr->scr_oidmacro;
+			lcrp = &lcr;
+		} else {
+			lcrp = &cr->scr_crule;
+		}
+		if ( ldap_contentrule2bv( lcrp, &bv ) == NULL ) {
+			ber_bvarray_free( bva );
+		}
+		if ( !sys ) {
+			idx.bv_len = sprintf(idx.bv_val, "{%d}", i);
+		}
+		bva[i].bv_len = idx.bv_len + bv.bv_len;
+		bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
+		strcpy( bva[i].bv_val, ibuf );
+		strcpy( bva[i].bv_val + idx.bv_len, bv.bv_val );
+		i++;
+		bva[i].bv_val = NULL;
+		ldap_memfree( bv.bv_val );
+		if ( cr == end ) break;
+	}
+	*res = bva;
+}
+
+int
+cr_schema_info( Entry *e )
+{
+	AttributeDescription *ad_ditContentRules
+		= slap_schema.si_ad_ditContentRules;
+	ContentRule	*cr;
+
+	struct berval	val;
+	struct berval	nval;
+
+	LDAP_STAILQ_FOREACH(cr, &cr_list, scr_next) {
+		if ( ldap_contentrule2bv( &cr->scr_crule, &val ) == NULL ) {
+			return -1;
+		}
+
+#if 0
+		if( cr->scr_flags & SLAP_CR_HIDE ) continue;
+#endif
+#if 0
+		Debug( LDAP_DEBUG_TRACE, "Merging cr [%ld] %s\n",
+	       (long) val.bv_len, val.bv_val, 0 );
+#endif
+
+		nval.bv_val = cr->scr_oid;
+		nval.bv_len = strlen(cr->scr_oid);
+
+		if( attr_merge_one( e, ad_ditContentRules, &val, &nval ) )
+		{
+			return -1;
+		}
+		ldap_memfree( val.bv_val );
+	}
+	return 0;
+}