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-rw-r--r--servers/slapd/acl.c2689
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diff --git a/servers/slapd/acl.c b/servers/slapd/acl.c
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+++ b/servers/slapd/acl.c
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+/* acl.c - routines to parse and check acl's */
+/* $OpenLDAP$ */
+/* 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>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/regex.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+
+#include "slap.h"
+#include "sets.h"
+#include "lber_pvt.h"
+#include "lutil.h"
+
+#define ACL_BUF_SIZE 1024 /* use most appropriate size */
+
+static const struct berval acl_bv_ip_eq = BER_BVC( "IP=" );
+#ifdef LDAP_PF_INET6
+static const struct berval acl_bv_ipv6_eq = BER_BVC( "IP=[" );
+#endif /* LDAP_PF_INET6 */
+#ifdef LDAP_PF_LOCAL
+static const struct berval acl_bv_path_eq = BER_BVC("PATH=");
+#endif /* LDAP_PF_LOCAL */
+
+static AccessControl * slap_acl_get(
+ AccessControl *ac, int *count,
+ Operation *op, Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ AclRegexMatches *matches,
+ slap_mask_t *mask,
+ AccessControlState *state );
+
+static slap_control_t slap_acl_mask(
+ AccessControl *ac,
+ AccessControl *prev,
+ slap_mask_t *mask,
+ Operation *op, Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ AclRegexMatches *matches,
+ int count,
+ AccessControlState *state,
+ slap_access_t access );
+
+static int regex_matches(
+ struct berval *pat, char *str,
+ struct berval *dn_matches, struct berval *val_matches,
+ AclRegexMatches *matches);
+
+typedef struct AclSetCookie {
+ SetCookie asc_cookie;
+#define asc_op asc_cookie.set_op
+ Entry *asc_e;
+} AclSetCookie;
+
+
+SLAP_SET_GATHER acl_set_gather;
+SLAP_SET_GATHER acl_set_gather2;
+
+/*
+ * access_allowed - check whether op->o_ndn is allowed the requested access
+ * to entry e, attribute attr, value val. if val is null, access to
+ * the whole attribute is assumed (all values).
+ *
+ * This routine loops through all access controls and calls
+ * slap_acl_mask() on each applicable access control.
+ * The loop exits when a definitive answer is reached or
+ * or no more controls remain.
+ *
+ * returns:
+ * 0 access denied
+ * 1 access granted
+ *
+ * Notes:
+ * - can be legally called with op == NULL
+ * - can be legally called with op->o_bd == NULL
+ */
+
+int
+slap_access_always_allowed(
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ slap_access_t access,
+ AccessControlState *state,
+ slap_mask_t *maskp )
+{
+ assert( maskp != NULL );
+
+ /* assign all */
+ ACL_LVL_ASSIGN_MANAGE( *maskp );
+
+ return 1;
+}
+
+#define MATCHES_DNMAXCOUNT(m) \
+ ( sizeof ( (m)->dn_data ) / sizeof( *(m)->dn_data ) )
+#define MATCHES_VALMAXCOUNT(m) \
+ ( sizeof ( (m)->val_data ) / sizeof( *(m)->val_data ) )
+#define MATCHES_MEMSET(m) do { \
+ memset( (m)->dn_data, '\0', sizeof( (m)->dn_data ) ); \
+ memset( (m)->val_data, '\0', sizeof( (m)->val_data ) ); \
+ (m)->dn_count = MATCHES_DNMAXCOUNT( (m) ); \
+ (m)->val_count = MATCHES_VALMAXCOUNT( (m) ); \
+} while ( 0 /* CONSTCOND */ )
+
+int
+slap_access_allowed(
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ slap_access_t access,
+ AccessControlState *state,
+ slap_mask_t *maskp )
+{
+ int ret = 1;
+ int count;
+ AccessControl *a, *prev;
+
+#ifdef LDAP_DEBUG
+ char accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif
+ slap_mask_t mask;
+ slap_control_t control;
+ slap_access_t access_level;
+ const char *attr;
+ AclRegexMatches matches;
+ AccessControlState acl_state = ACL_STATE_INIT;
+ static AccessControlState state_init = ACL_STATE_INIT;
+
+ assert( op != NULL );
+ assert( e != NULL );
+ assert( desc != NULL );
+ assert( maskp != NULL );
+
+ access_level = ACL_LEVEL( access );
+ attr = desc->ad_cname.bv_val;
+
+ assert( attr != NULL );
+
+ ACL_INIT( mask );
+
+ /* grant database root access */
+ if ( be_isroot( op ) ) {
+ Debug( LDAP_DEBUG_ACL, "<= root access granted\n", 0, 0, 0 );
+ mask = ACL_LVL_MANAGE;
+ goto done;
+ }
+
+ /*
+ * no-user-modification operational attributes are ignored
+ * by ACL_WRITE checking as any found here are not provided
+ * by the user
+ *
+ * NOTE: but they are not ignored for ACL_MANAGE, because
+ * if we get here it means a non-root user is trying to
+ * manage data, so we need to check its privileges.
+ */
+ if ( access_level == ACL_WRITE_
+ && is_at_no_user_mod( desc->ad_type )
+ && desc != slap_schema.si_ad_entry
+ && desc != slap_schema.si_ad_children )
+ {
+ Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
+ " %s access granted\n",
+ attr, 0, 0 );
+ goto done;
+ }
+
+ /* use backend default access if no backend acls */
+ if ( op->o_bd->be_acl == NULL && frontendDB->be_acl == NULL ) {
+ int i;
+
+ Debug( LDAP_DEBUG_ACL,
+ "=> slap_access_allowed: backend default %s "
+ "access %s to \"%s\"\n",
+ access2str( access ),
+ op->o_bd->be_dfltaccess >= access_level ? "granted" : "denied",
+ op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
+ ret = op->o_bd->be_dfltaccess >= access_level;
+
+ mask = ACL_PRIV_LEVEL;
+ for ( i = ACL_NONE; i <= op->o_bd->be_dfltaccess; i++ ) {
+ ACL_PRIV_SET( mask, ACL_ACCESS2PRIV( i ) );
+ }
+
+ goto done;
+ }
+
+ ret = 0;
+ control = ACL_BREAK;
+
+ if ( state == NULL )
+ state = &acl_state;
+ if ( state->as_desc == desc &&
+ state->as_access == access &&
+ state->as_vd_acl_present )
+ {
+ a = state->as_vd_acl;
+ count = state->as_vd_acl_count;
+ if ( state->as_fe_done )
+ state->as_fe_done--;
+ ACL_PRIV_ASSIGN( mask, state->as_vd_mask );
+ } else {
+ *state = state_init;
+
+ a = NULL;
+ count = 0;
+ ACL_PRIV_ASSIGN( mask, *maskp );
+ }
+
+ MATCHES_MEMSET( &matches );
+ prev = a;
+
+ while ( ( a = slap_acl_get( a, &count, op, e, desc, val,
+ &matches, &mask, state ) ) != NULL )
+ {
+ int i;
+ int dnmaxcount = MATCHES_DNMAXCOUNT( &matches );
+ int valmaxcount = MATCHES_VALMAXCOUNT( &matches );
+ regmatch_t *dn_data = matches.dn_data;
+ regmatch_t *val_data = matches.val_data;
+
+ /* DN matches */
+ for ( i = 0; i < dnmaxcount && dn_data[i].rm_eo > 0; i++ ) {
+ char *data = e->e_ndn;
+
+ Debug( LDAP_DEBUG_ACL, "=> match[dn%d]: %d %d ", i,
+ (int)dn_data[i].rm_so,
+ (int)dn_data[i].rm_eo );
+ if ( dn_data[i].rm_so <= dn_data[0].rm_eo ) {
+ int n;
+ for ( n = dn_data[i].rm_so;
+ n < dn_data[i].rm_eo; n++ ) {
+ Debug( LDAP_DEBUG_ACL, "%c",
+ data[n], 0, 0 );
+ }
+ }
+ Debug( LDAP_DEBUG_ACL, "\n", 0, 0, 0 );
+ }
+
+ /* val matches */
+ for ( i = 0; i < valmaxcount && val_data[i].rm_eo > 0; i++ ) {
+ char *data = val->bv_val;
+
+ Debug( LDAP_DEBUG_ACL, "=> match[val%d]: %d %d ", i,
+ (int)val_data[i].rm_so,
+ (int)val_data[i].rm_eo );
+ if ( val_data[i].rm_so <= val_data[0].rm_eo ) {
+ int n;
+ for ( n = val_data[i].rm_so;
+ n < val_data[i].rm_eo; n++ ) {
+ Debug( LDAP_DEBUG_ACL, "%c",
+ data[n], 0, 0 );
+ }
+ }
+ Debug( LDAP_DEBUG_ACL, "\n", 0, 0, 0 );
+ }
+
+ control = slap_acl_mask( a, prev, &mask, op,
+ e, desc, val, &matches, count, state, access );
+
+ if ( control != ACL_BREAK ) {
+ break;
+ }
+
+ MATCHES_MEMSET( &matches );
+ prev = a;
+ }
+
+ if ( ACL_IS_INVALID( mask ) ) {
+ Debug( LDAP_DEBUG_ACL,
+ "=> slap_access_allowed: \"%s\" (%s) invalid!\n",
+ e->e_dn, attr, 0 );
+ ACL_PRIV_ASSIGN( mask, *maskp );
+
+ } else if ( control == ACL_BREAK ) {
+ Debug( LDAP_DEBUG_ACL,
+ "=> slap_access_allowed: no more rules\n", 0, 0, 0 );
+
+ goto done;
+ }
+
+ ret = ACL_GRANT( mask, access );
+
+ Debug( LDAP_DEBUG_ACL,
+ "=> slap_access_allowed: %s access %s by %s\n",
+ access2str( access ), ret ? "granted" : "denied",
+ accessmask2str( mask, accessmaskbuf, 1 ) );
+
+done:
+ ACL_PRIV_ASSIGN( *maskp, mask );
+ return ret;
+}
+
+int
+fe_access_allowed(
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ slap_access_t access,
+ AccessControlState *state,
+ slap_mask_t *maskp )
+{
+ BackendDB *be_orig;
+ int rc;
+
+ /*
+ * NOTE: control gets here if FIXME
+ * if an appropriate backend cannot be selected for the operation,
+ * we assume that the frontend should handle this
+ * FIXME: should select_backend() take care of this,
+ * and return frontendDB instead of NULL? maybe for some value
+ * of the flags?
+ */
+ be_orig = op->o_bd;
+
+ if ( op->o_bd == NULL ) {
+ op->o_bd = select_backend( &op->o_req_ndn, 0 );
+ if ( op->o_bd == NULL )
+ op->o_bd = frontendDB;
+ }
+ rc = slap_access_allowed( op, e, desc, val, access, state, maskp );
+ op->o_bd = be_orig;
+
+ return rc;
+}
+
+int
+access_allowed_mask(
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ slap_access_t access,
+ AccessControlState *state,
+ slap_mask_t *maskp )
+{
+ int ret = 1;
+ int be_null = 0;
+
+#ifdef LDAP_DEBUG
+ char accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif
+ slap_mask_t mask;
+ slap_access_t access_level;
+ const char *attr;
+
+ assert( e != NULL );
+ assert( desc != NULL );
+
+ access_level = ACL_LEVEL( access );
+
+ assert( access_level > ACL_NONE );
+
+ ACL_INIT( mask );
+ if ( maskp ) ACL_INVALIDATE( *maskp );
+
+ attr = desc->ad_cname.bv_val;
+
+ assert( attr != NULL );
+
+ if ( op ) {
+ if ( op->o_acl_priv != ACL_NONE ) {
+ access = op->o_acl_priv;
+
+ } else if ( op->o_is_auth_check &&
+ ( access_level == ACL_SEARCH || access_level == ACL_READ ) )
+ {
+ access = ACL_AUTH;
+
+ } else if ( get_relax( op ) && access_level == ACL_WRITE_ &&
+ desc == slap_schema.si_ad_entry )
+ {
+ access = ACL_MANAGE;
+ }
+ }
+
+ if ( state != NULL ) {
+ if ( state->as_desc == desc &&
+ state->as_access == access &&
+ state->as_result != -1 &&
+ !state->as_vd_acl_present )
+ {
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: result was in cache (%s)\n",
+ attr, 0, 0 );
+ return state->as_result;
+ } else {
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: result not in cache (%s)\n",
+ attr, 0, 0 );
+ }
+ }
+
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
+ access2str( access ), e->e_dn, attr );
+
+ if ( op == NULL ) {
+ /* no-op call */
+ goto done;
+ }
+
+ if ( op->o_bd == NULL ) {
+ op->o_bd = LDAP_STAILQ_FIRST( &backendDB );
+ be_null = 1;
+
+ /* FIXME: experimental; use first backend rules
+ * iff there is no global_acl (ITS#3100)
+ */
+ if ( frontendDB->be_acl != NULL ) {
+ op->o_bd = frontendDB;
+ }
+ }
+ assert( op->o_bd != NULL );
+
+ /* this is enforced in backend_add() */
+ if ( op->o_bd->bd_info->bi_access_allowed ) {
+ /* delegate to backend */
+ ret = op->o_bd->bd_info->bi_access_allowed( op, e,
+ desc, val, access, state, &mask );
+
+ } else {
+ /* use default (but pass through frontend
+ * for global ACL overlays) */
+ ret = frontendDB->bd_info->bi_access_allowed( op, e,
+ desc, val, access, state, &mask );
+ }
+
+ if ( !ret ) {
+ if ( ACL_IS_INVALID( mask ) ) {
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: \"%s\" (%s) invalid!\n",
+ e->e_dn, attr, 0 );
+ ACL_INIT( mask );
+
+ } else {
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: no more rules\n", 0, 0, 0 );
+
+ goto done;
+ }
+ }
+
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: %s access %s by %s\n",
+ access2str( access ), ret ? "granted" : "denied",
+ accessmask2str( mask, accessmaskbuf, 1 ) );
+
+done:
+ if ( state != NULL ) {
+ state->as_access = access;
+ state->as_result = ret;
+ state->as_desc = desc;
+ }
+ if ( be_null ) op->o_bd = NULL;
+ if ( maskp ) ACL_PRIV_ASSIGN( *maskp, mask );
+ return ret;
+}
+
+
+/*
+ * slap_acl_get - return the acl applicable to entry e, attribute
+ * attr. the acl returned is suitable for use in subsequent calls to
+ * acl_access_allowed().
+ */
+
+static AccessControl *
+slap_acl_get(
+ AccessControl *a,
+ int *count,
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ AclRegexMatches *matches,
+ slap_mask_t *mask,
+ AccessControlState *state )
+{
+ const char *attr;
+ ber_len_t dnlen;
+ AccessControl *prev;
+
+ assert( e != NULL );
+ assert( count != NULL );
+ assert( desc != NULL );
+ assert( state != NULL );
+
+ attr = desc->ad_cname.bv_val;
+
+ assert( attr != NULL );
+
+ if( a == NULL ) {
+ if( op->o_bd == NULL || op->o_bd->be_acl == NULL ) {
+ a = frontendDB->be_acl;
+ } else {
+ a = op->o_bd->be_acl;
+ }
+ prev = NULL;
+
+ assert( a != NULL );
+ if ( a == frontendDB->be_acl )
+ state->as_fe_done = 1;
+ } else {
+ prev = a;
+ a = a->acl_next;
+ }
+
+ dnlen = e->e_nname.bv_len;
+
+ retry:
+ for ( ; a != NULL; prev = a, a = a->acl_next ) {
+ (*count) ++;
+
+ if ( a != frontendDB->be_acl && state->as_fe_done )
+ state->as_fe_done++;
+
+ if ( a->acl_dn_pat.bv_len || ( a->acl_dn_style != ACL_STYLE_REGEX )) {
+ if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
+ Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n",
+ *count, a->acl_dn_pat.bv_val, (int) a->acl_dn_re.re_nsub );
+ if ( regexec ( &a->acl_dn_re,
+ e->e_ndn,
+ matches->dn_count,
+ matches->dn_data, 0 ) )
+ continue;
+
+ } else {
+ ber_len_t patlen;
+
+ Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n",
+ *count, a->acl_dn_pat.bv_val, 0 );
+ patlen = a->acl_dn_pat.bv_len;
+ if ( dnlen < patlen )
+ continue;
+
+ if ( a->acl_dn_style == ACL_STYLE_BASE ) {
+ /* base dn -- entire object DN must match */
+ if ( dnlen != patlen )
+ continue;
+
+ } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
+ ber_len_t rdnlen = 0;
+ ber_len_t sep = 0;
+
+ if ( dnlen <= patlen )
+ continue;
+
+ if ( patlen > 0 ) {
+ if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
+ continue;
+ sep = 1;
+ }
+
+ rdnlen = dn_rdnlen( NULL, &e->e_nname );
+ if ( rdnlen + patlen + sep != dnlen )
+ continue;
+
+ } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
+ if ( dnlen > patlen && !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
+ continue;
+
+ } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
+ if ( dnlen <= patlen )
+ continue;
+ if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
+ continue;
+ }
+
+ if ( strcmp( a->acl_dn_pat.bv_val, e->e_ndn + dnlen - patlen ) != 0 )
+ continue;
+ }
+
+ Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
+ *count, 0, 0 );
+ }
+
+ if ( a->acl_attrs && !ad_inlist( desc, a->acl_attrs ) ) {
+ matches->dn_data[0].rm_so = -1;
+ matches->dn_data[0].rm_eo = -1;
+ matches->val_data[0].rm_so = -1;
+ matches->val_data[0].rm_eo = -1;
+ continue;
+ }
+
+ /* Is this ACL only for a specific value? */
+ if ( a->acl_attrval.bv_val ) {
+ if ( val == NULL ) {
+ continue;
+ }
+
+ if ( !state->as_vd_acl_present ) {
+ state->as_vd_acl_present = 1;
+ state->as_vd_acl = prev;
+ state->as_vd_acl_count = *count - 1;
+ ACL_PRIV_ASSIGN ( state->as_vd_mask, *mask );
+ }
+
+ if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
+ Debug( LDAP_DEBUG_ACL,
+ "acl_get: valpat %s\n",
+ a->acl_attrval.bv_val, 0, 0 );
+ if ( regexec ( &a->acl_attrval_re,
+ val->bv_val,
+ matches->val_count,
+ matches->val_data, 0 ) )
+ {
+ continue;
+ }
+
+ } else {
+ int match = 0;
+ const char *text;
+ Debug( LDAP_DEBUG_ACL,
+ "acl_get: val %s\n",
+ a->acl_attrval.bv_val, 0, 0 );
+
+ if ( a->acl_attrs[0].an_desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName ) {
+ if (value_match( &match, desc,
+ a->acl_attrval_mr, 0,
+ val, &a->acl_attrval, &text ) != LDAP_SUCCESS ||
+ match )
+ continue;
+
+ } else {
+ ber_len_t patlen, vdnlen;
+
+ patlen = a->acl_attrval.bv_len;
+ vdnlen = val->bv_len;
+
+ if ( vdnlen < patlen )
+ continue;
+
+ if ( a->acl_attrval_style == ACL_STYLE_BASE ) {
+ if ( vdnlen > patlen )
+ continue;
+
+ } else if ( a->acl_attrval_style == ACL_STYLE_ONE ) {
+ ber_len_t rdnlen = 0;
+
+ if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
+ continue;
+
+ rdnlen = dn_rdnlen( NULL, val );
+ if ( rdnlen + patlen + 1 != vdnlen )
+ continue;
+
+ } else if ( a->acl_attrval_style == ACL_STYLE_SUBTREE ) {
+ if ( vdnlen > patlen && !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
+ continue;
+
+ } else if ( a->acl_attrval_style == ACL_STYLE_CHILDREN ) {
+ if ( vdnlen <= patlen )
+ continue;
+
+ if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
+ continue;
+ }
+
+ if ( strcmp( a->acl_attrval.bv_val, val->bv_val + vdnlen - patlen ) )
+ continue;
+ }
+ }
+ }
+
+ if ( a->acl_filter != NULL ) {
+ ber_int_t rc = test_filter( NULL, e, a->acl_filter );
+ if ( rc != LDAP_COMPARE_TRUE ) {
+ continue;
+ }
+ }
+
+ Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] attr %s\n",
+ *count, attr, 0);
+ return a;
+ }
+
+ if ( !state->as_fe_done ) {
+ state->as_fe_done = 1;
+ a = frontendDB->be_acl;
+ goto retry;
+ }
+
+ Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
+ return( NULL );
+}
+
+/*
+ * Record value-dependent access control state
+ */
+#define ACL_RECORD_VALUE_STATE do { \
+ if( state && !state->as_vd_acl_present ) { \
+ state->as_vd_acl_present = 1; \
+ state->as_vd_acl = prev; \
+ state->as_vd_acl_count = count - 1; \
+ ACL_PRIV_ASSIGN( state->as_vd_mask, *mask ); \
+ } \
+ } while( 0 )
+
+static int
+acl_mask_dn(
+ Operation *op,
+ Entry *e,
+ struct berval *val,
+ AccessControl *a,
+ AclRegexMatches *matches,
+ slap_dn_access *bdn,
+ struct berval *opndn )
+{
+ /*
+ * if access applies to the entry itself, and the
+ * user is bound as somebody in the same namespace as
+ * the entry, OR the given dn matches the dn pattern
+ */
+ /*
+ * NOTE: styles "anonymous", "users" and "self"
+ * have been moved to enum slap_style_t, whose
+ * value is set in a_dn_style; however, the string
+ * is maintained in a_dn_pat.
+ */
+
+ if ( bdn->a_style == ACL_STYLE_ANONYMOUS ) {
+ if ( !BER_BVISEMPTY( opndn ) ) {
+ return 1;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_USERS ) {
+ if ( BER_BVISEMPTY( opndn ) ) {
+ return 1;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_SELF ) {
+ struct berval ndn, selfndn;
+ int level;
+
+ if ( BER_BVISEMPTY( opndn ) || BER_BVISNULL( &e->e_nname ) ) {
+ return 1;
+ }
+
+ level = bdn->a_self_level;
+ if ( level < 0 ) {
+ selfndn = *opndn;
+ ndn = e->e_nname;
+ level = -level;
+
+ } else {
+ ndn = *opndn;
+ selfndn = e->e_nname;
+ }
+
+ for ( ; level > 0; level-- ) {
+ if ( BER_BVISEMPTY( &ndn ) ) {
+ break;
+ }
+ dnParent( &ndn, &ndn );
+ }
+
+ if ( BER_BVISEMPTY( &ndn ) || !dn_match( &ndn, &selfndn ) )
+ {
+ return 1;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_REGEX ) {
+ if ( !ber_bvccmp( &bdn->a_pat, '*' ) ) {
+ AclRegexMatches tmp_matches,
+ *tmp_matchesp = &tmp_matches;
+ int rc = 0;
+ regmatch_t *tmp_data;
+
+ MATCHES_MEMSET( &tmp_matches );
+ tmp_data = &tmp_matches.dn_data[0];
+
+ if ( a->acl_attrval_style == ACL_STYLE_REGEX )
+ tmp_matchesp = matches;
+ else switch ( a->acl_dn_style ) {
+ case ACL_STYLE_REGEX:
+ if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
+ tmp_matchesp = matches;
+ break;
+ }
+ /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
+
+ case ACL_STYLE_BASE:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 1;
+ break;
+
+ case ACL_STYLE_ONE:
+ case ACL_STYLE_SUBTREE:
+ case ACL_STYLE_CHILDREN:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
+ tmp_data[1].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 2;
+ break;
+
+ default:
+ /* error */
+ rc = 1;
+ break;
+ }
+
+ if ( rc ) {
+ return 1;
+ }
+
+ if ( !regex_matches( &bdn->a_pat, opndn->bv_val,
+ &e->e_nname, NULL, tmp_matchesp ) )
+ {
+ return 1;
+ }
+ }
+
+ } else {
+ struct berval pat;
+ ber_len_t patlen, odnlen;
+ int got_match = 0;
+
+ if ( e->e_dn == NULL )
+ return 1;
+
+ if ( bdn->a_expand ) {
+ struct berval bv;
+ char buf[ACL_BUF_SIZE];
+
+ AclRegexMatches tmp_matches,
+ *tmp_matchesp = &tmp_matches;
+ int rc = 0;
+ regmatch_t *tmp_data;
+
+ MATCHES_MEMSET( &tmp_matches );
+ tmp_data = &tmp_matches.dn_data[0];
+
+ bv.bv_len = sizeof( buf ) - 1;
+ bv.bv_val = buf;
+
+ /* Expand value regex */
+ if ( a->acl_attrval_style == ACL_STYLE_REGEX )
+ tmp_matchesp = matches;
+ else switch ( a->acl_dn_style ) {
+ case ACL_STYLE_REGEX:
+ if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
+ tmp_matchesp = matches;
+ break;
+ }
+ /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
+
+ case ACL_STYLE_BASE:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 1;
+ break;
+
+ case ACL_STYLE_ONE:
+ case ACL_STYLE_SUBTREE:
+ case ACL_STYLE_CHILDREN:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
+ tmp_data[1].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 2;
+ break;
+
+ default:
+ /* error */
+ rc = 1;
+ break;
+ }
+
+ if ( rc ) {
+ return 1;
+ }
+
+ if ( acl_string_expand( &bv, &bdn->a_pat,
+ &e->e_nname,
+ val, tmp_matchesp ) )
+ {
+ return 1;
+ }
+
+ if ( dnNormalize(0, NULL, NULL, &bv,
+ &pat, op->o_tmpmemctx )
+ != LDAP_SUCCESS )
+ {
+ /* did not expand to a valid dn */
+ return 1;
+ }
+
+ } else {
+ pat = bdn->a_pat;
+ }
+
+ patlen = pat.bv_len;
+ odnlen = opndn->bv_len;
+ if ( odnlen < patlen ) {
+ goto dn_match_cleanup;
+
+ }
+
+ if ( bdn->a_style == ACL_STYLE_BASE ) {
+ /* base dn -- entire object DN must match */
+ if ( odnlen != patlen ) {
+ goto dn_match_cleanup;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_ONE ) {
+ ber_len_t rdnlen = 0;
+
+ if ( odnlen <= patlen ) {
+ goto dn_match_cleanup;
+ }
+
+ if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
+ goto dn_match_cleanup;
+ }
+
+ rdnlen = dn_rdnlen( NULL, opndn );
+ if ( rdnlen - ( odnlen - patlen - 1 ) != 0 ) {
+ goto dn_match_cleanup;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_SUBTREE ) {
+ if ( odnlen > patlen && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
+ goto dn_match_cleanup;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_CHILDREN ) {
+ if ( odnlen <= patlen ) {
+ goto dn_match_cleanup;
+ }
+
+ if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
+ goto dn_match_cleanup;
+ }
+
+ } else if ( bdn->a_style == ACL_STYLE_LEVEL ) {
+ int level = bdn->a_level;
+ struct berval ndn;
+
+ if ( odnlen <= patlen ) {
+ goto dn_match_cleanup;
+ }
+
+ if ( level > 0 && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) )
+ {
+ goto dn_match_cleanup;
+ }
+
+ ndn = *opndn;
+ for ( ; level > 0; level-- ) {
+ if ( BER_BVISEMPTY( &ndn ) ) {
+ goto dn_match_cleanup;
+ }
+ dnParent( &ndn, &ndn );
+ if ( ndn.bv_len < patlen ) {
+ goto dn_match_cleanup;
+ }
+ }
+
+ if ( ndn.bv_len != patlen ) {
+ goto dn_match_cleanup;
+ }
+ }
+
+ got_match = !strcmp( pat.bv_val, &opndn->bv_val[ odnlen - patlen ] );
+
+dn_match_cleanup:;
+ if ( pat.bv_val != bdn->a_pat.bv_val ) {
+ slap_sl_free( pat.bv_val, op->o_tmpmemctx );
+ }
+
+ if ( !got_match ) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int
+acl_mask_dnattr(
+ Operation *op,
+ Entry *e,
+ struct berval *val,
+ AccessControl *a,
+ int count,
+ AccessControlState *state,
+ slap_mask_t *mask,
+ slap_dn_access *bdn,
+ struct berval *opndn )
+{
+ Attribute *at;
+ struct berval bv;
+ int rc, match = 0;
+ const char *text;
+ const char *attr = bdn->a_at->ad_cname.bv_val;
+
+ assert( attr != NULL );
+
+ if ( BER_BVISEMPTY( opndn ) ) {
+ return 1;
+ }
+
+ Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n", attr, 0, 0 );
+ bv = *opndn;
+
+ /* see if asker is listed in dnattr */
+ for ( at = attrs_find( e->e_attrs, bdn->a_at );
+ at != NULL;
+ at = attrs_find( at->a_next, bdn->a_at ) )
+ {
+ if ( attr_valfind( at,
+ SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+ SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+ &bv, NULL, op->o_tmpmemctx ) == 0 )
+ {
+ /* found it */
+ match = 1;
+ break;
+ }
+ }
+
+ if ( match ) {
+ /* have a dnattr match. if this is a self clause then
+ * the target must also match the op dn.
+ */
+ if ( bdn->a_self ) {
+ /* check if the target is an attribute. */
+ if ( val == NULL ) return 1;
+
+ /* target is attribute, check if the attribute value
+ * is the op dn.
+ */
+ rc = value_match( &match, bdn->a_at,
+ bdn->a_at->ad_type->sat_equality, 0,
+ val, &bv, &text );
+ /* on match error or no match, fail the ACL clause */
+ if ( rc != LDAP_SUCCESS || match != 0 )
+ return 1;
+ }
+
+ } else {
+ /* no dnattr match, check if this is a self clause */
+ if ( ! bdn->a_self )
+ return 1;
+
+ /* this is a self clause, check if the target is an
+ * attribute.
+ */
+ if ( val == NULL )
+ return 1;
+
+ /* target is attribute, check if the attribute value
+ * is the op dn.
+ */
+ rc = value_match( &match, bdn->a_at,
+ bdn->a_at->ad_type->sat_equality, 0,
+ val, &bv, &text );
+
+ /* on match error or no match, fail the ACL clause */
+ if ( rc != LDAP_SUCCESS || match != 0 )
+ return 1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * slap_acl_mask - modifies mask based upon the given acl and the
+ * requested access to entry e, attribute attr, value val. if val
+ * is null, access to the whole attribute is assumed (all values).
+ *
+ * returns 0 access NOT allowed
+ * 1 access allowed
+ */
+
+static slap_control_t
+slap_acl_mask(
+ AccessControl *a,
+ AccessControl *prev,
+ slap_mask_t *mask,
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ AclRegexMatches *matches,
+ int count,
+ AccessControlState *state,
+ slap_access_t access )
+{
+ int i;
+ Access *b;
+#ifdef LDAP_DEBUG
+ char accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif /* DEBUG */
+ const char *attr;
+#ifdef SLAP_DYNACL
+ slap_mask_t a2pmask = ACL_ACCESS2PRIV( access );
+#endif /* SLAP_DYNACL */
+
+ assert( a != NULL );
+ assert( mask != NULL );
+ assert( desc != NULL );
+
+ attr = desc->ad_cname.bv_val;
+
+ assert( attr != NULL );
+
+ Debug( LDAP_DEBUG_ACL,
+ "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
+ e->e_dn, attr, 0 );
+
+ Debug( LDAP_DEBUG_ACL,
+ "=> acl_mask: to %s by \"%s\", (%s) \n",
+ val ? "value" : "all values",
+ op->o_ndn.bv_val ? op->o_ndn.bv_val : "",
+ accessmask2str( *mask, accessmaskbuf, 1 ) );
+
+
+ b = a->acl_access;
+ i = 1;
+
+ for ( ; b != NULL; b = b->a_next, i++ ) {
+ slap_mask_t oldmask, modmask;
+
+ ACL_INVALIDATE( modmask );
+
+ /* check for the "self" modifier in the <access> field */
+ if ( b->a_dn.a_self ) {
+ const char *dummy;
+ int rc, match = 0;
+
+ ACL_RECORD_VALUE_STATE;
+
+ /* must have DN syntax */
+ if ( desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName &&
+ !is_at_syntax( desc->ad_type, SLAPD_NAMEUID_SYNTAX )) continue;
+
+ /* check if the target is an attribute. */
+ if ( val == NULL ) continue;
+
+ /* a DN must be present */
+ if ( BER_BVISEMPTY( &op->o_ndn ) ) {
+ continue;
+ }
+
+ /* target is attribute, check if the attribute value
+ * is the op dn.
+ */
+ rc = value_match( &match, desc,
+ desc->ad_type->sat_equality, 0,
+ val, &op->o_ndn, &dummy );
+ /* on match error or no match, fail the ACL clause */
+ if ( rc != LDAP_SUCCESS || match != 0 )
+ continue;
+ }
+
+ /* AND <who> clauses */
+ if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
+ Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
+ b->a_dn_pat.bv_val, 0, 0);
+ /*
+ * if access applies to the entry itself, and the
+ * user is bound as somebody in the same namespace as
+ * the entry, OR the given dn matches the dn pattern
+ */
+ /*
+ * NOTE: styles "anonymous", "users" and "self"
+ * have been moved to enum slap_style_t, whose
+ * value is set in a_dn_style; however, the string
+ * is maintained in a_dn_pat.
+ */
+
+ if ( acl_mask_dn( op, e, val, a, matches,
+ &b->a_dn, &op->o_ndn ) )
+ {
+ continue;
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
+ struct berval ndn;
+
+ Debug( LDAP_DEBUG_ACL, "<= check a_realdn_pat: %s\n",
+ b->a_realdn_pat.bv_val, 0, 0);
+ /*
+ * if access applies to the entry itself, and the
+ * user is bound as somebody in the same namespace as
+ * the entry, OR the given dn matches the dn pattern
+ */
+ /*
+ * NOTE: styles "anonymous", "users" and "self"
+ * have been moved to enum slap_style_t, whose
+ * value is set in a_dn_style; however, the string
+ * is maintained in a_dn_pat.
+ */
+
+ if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
+ {
+ ndn = op->o_conn->c_ndn;
+ } else {
+ ndn = op->o_ndn;
+ }
+
+ if ( acl_mask_dn( op, e, val, a, matches,
+ &b->a_realdn, &ndn ) )
+ {
+ continue;
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
+ if ( ! op->o_conn->c_listener ) {
+ continue;
+ }
+ Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
+ b->a_sockurl_pat.bv_val, 0, 0 );
+
+ if ( !ber_bvccmp( &b->a_sockurl_pat, '*' ) ) {
+ if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
+ if ( !regex_matches( &b->a_sockurl_pat, op->o_conn->c_listener_url.bv_val,
+ &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+
+ } else if ( b->a_sockurl_style == ACL_STYLE_EXPAND ) {
+ struct berval bv;
+ char buf[ACL_BUF_SIZE];
+
+ bv.bv_len = sizeof( buf ) - 1;
+ bv.bv_val = buf;
+ if ( acl_string_expand( &bv, &b->a_sockurl_pat, &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+
+ if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_listener_url ) != 0 )
+ {
+ continue;
+ }
+
+ } else {
+ if ( ber_bvstrcasecmp( &b->a_sockurl_pat, &op->o_conn->c_listener_url ) != 0 )
+ {
+ continue;
+ }
+ }
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
+ if ( !op->o_conn->c_peer_domain.bv_val ) {
+ continue;
+ }
+ Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
+ b->a_domain_pat.bv_val, 0, 0 );
+ if ( !ber_bvccmp( &b->a_domain_pat, '*' ) ) {
+ if ( b->a_domain_style == ACL_STYLE_REGEX) {
+ if ( !regex_matches( &b->a_domain_pat, op->o_conn->c_peer_domain.bv_val,
+ &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+ } else {
+ char buf[ACL_BUF_SIZE];
+
+ struct berval cmp = op->o_conn->c_peer_domain;
+ struct berval pat = b->a_domain_pat;
+
+ if ( b->a_domain_expand ) {
+ struct berval bv;
+
+ bv.bv_len = sizeof(buf) - 1;
+ bv.bv_val = buf;
+
+ if ( acl_string_expand(&bv, &b->a_domain_pat, &e->e_nname, val, matches) )
+ {
+ continue;
+ }
+ pat = bv;
+ }
+
+ if ( b->a_domain_style == ACL_STYLE_SUBTREE ) {
+ int offset = cmp.bv_len - pat.bv_len;
+ if ( offset < 0 ) {
+ continue;
+ }
+
+ if ( offset == 1 || ( offset > 1 && cmp.bv_val[ offset - 1 ] != '.' ) ) {
+ continue;
+ }
+
+ /* trim the domain */
+ cmp.bv_val = &cmp.bv_val[ offset ];
+ cmp.bv_len -= offset;
+ }
+
+ if ( ber_bvstrcasecmp( &pat, &cmp ) != 0 ) {
+ continue;
+ }
+ }
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
+ if ( !op->o_conn->c_peer_name.bv_val ) {
+ continue;
+ }
+ Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
+ b->a_peername_pat.bv_val, 0, 0 );
+ if ( !ber_bvccmp( &b->a_peername_pat, '*' ) ) {
+ if ( b->a_peername_style == ACL_STYLE_REGEX ) {
+ if ( !regex_matches( &b->a_peername_pat, op->o_conn->c_peer_name.bv_val,
+ &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+
+ } else {
+ /* try exact match */
+ if ( b->a_peername_style == ACL_STYLE_BASE ) {
+ if ( ber_bvstrcasecmp( &b->a_peername_pat, &op->o_conn->c_peer_name ) != 0 ) {
+ continue;
+ }
+
+ } else if ( b->a_peername_style == ACL_STYLE_EXPAND ) {
+ struct berval bv;
+ char buf[ACL_BUF_SIZE];
+
+ bv.bv_len = sizeof( buf ) - 1;
+ bv.bv_val = buf;
+ if ( acl_string_expand( &bv, &b->a_peername_pat, &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+
+ if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_peer_name ) != 0 ) {
+ continue;
+ }
+
+ /* extract IP and try exact match */
+ } else if ( b->a_peername_style == ACL_STYLE_IP ) {
+ char *port;
+ char buf[STRLENOF("255.255.255.255") + 1];
+ struct berval ip;
+ unsigned long addr;
+ int port_number = -1;
+
+ if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
+ acl_bv_ip_eq.bv_val,
+ acl_bv_ip_eq.bv_len ) != 0 )
+ continue;
+
+ ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ip_eq.bv_len;
+ ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ip_eq.bv_len;
+
+ port = strrchr( ip.bv_val, ':' );
+ if ( port ) {
+ ip.bv_len = port - ip.bv_val;
+ ++port;
+ if ( lutil_atoi( &port_number, port ) != 0 )
+ continue;
+ }
+
+ /* the port check can be anticipated here */
+ if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
+ continue;
+
+ /* address longer than expected? */
+ if ( ip.bv_len >= sizeof(buf) )
+ continue;
+
+ AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
+ buf[ ip.bv_len ] = '\0';
+
+ addr = inet_addr( buf );
+
+ /* unable to convert? */
+ if ( addr == (unsigned long)(-1) )
+ continue;
+
+ if ( (addr & b->a_peername_mask) != b->a_peername_addr )
+ continue;
+
+#ifdef LDAP_PF_INET6
+ /* extract IPv6 and try exact match */
+ } else if ( b->a_peername_style == ACL_STYLE_IPV6 ) {
+ char *port;
+ char buf[STRLENOF("FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF") + 1];
+ struct berval ip;
+ struct in6_addr addr;
+ int port_number = -1;
+
+ if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
+ acl_bv_ipv6_eq.bv_val,
+ acl_bv_ipv6_eq.bv_len ) != 0 )
+ continue;
+
+ ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ipv6_eq.bv_len;
+ ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ipv6_eq.bv_len;
+
+ port = strrchr( ip.bv_val, ']' );
+ if ( port ) {
+ ip.bv_len = port - ip.bv_val;
+ ++port;
+ if ( port[0] == ':' && lutil_atoi( &port_number, ++port ) != 0 )
+ continue;
+ }
+
+ /* the port check can be anticipated here */
+ if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
+ continue;
+
+ /* address longer than expected? */
+ if ( ip.bv_len >= sizeof(buf) )
+ continue;
+
+ AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
+ buf[ ip.bv_len ] = '\0';
+
+ if ( inet_pton( AF_INET6, buf, &addr ) != 1 )
+ continue;
+
+ /* check mask */
+ if ( !slap_addr6_mask( &addr, &b->a_peername_mask6, &b->a_peername_addr6 ) )
+ continue;
+#endif /* LDAP_PF_INET6 */
+
+#ifdef LDAP_PF_LOCAL
+ /* extract path and try exact match */
+ } else if ( b->a_peername_style == ACL_STYLE_PATH ) {
+ struct berval path;
+
+ if ( strncmp( op->o_conn->c_peer_name.bv_val,
+ acl_bv_path_eq.bv_val,
+ acl_bv_path_eq.bv_len ) != 0 )
+ continue;
+
+ path.bv_val = op->o_conn->c_peer_name.bv_val
+ + acl_bv_path_eq.bv_len;
+ path.bv_len = op->o_conn->c_peer_name.bv_len
+ - acl_bv_path_eq.bv_len;
+
+ if ( ber_bvcmp( &b->a_peername_pat, &path ) != 0 )
+ continue;
+
+#endif /* LDAP_PF_LOCAL */
+
+ /* exact match (very unlikely...) */
+ } else if ( ber_bvcmp( &op->o_conn->c_peer_name, &b->a_peername_pat ) != 0 ) {
+ continue;
+ }
+ }
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
+ if ( BER_BVISNULL( &op->o_conn->c_sock_name ) ) {
+ continue;
+ }
+ Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
+ b->a_sockname_pat.bv_val, 0, 0 );
+ if ( !ber_bvccmp( &b->a_sockname_pat, '*' ) ) {
+ if ( b->a_sockname_style == ACL_STYLE_REGEX) {
+ if ( !regex_matches( &b->a_sockname_pat, op->o_conn->c_sock_name.bv_val,
+ &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+
+ } else if ( b->a_sockname_style == ACL_STYLE_EXPAND ) {
+ struct berval bv;
+ char buf[ACL_BUF_SIZE];
+
+ bv.bv_len = sizeof( buf ) - 1;
+ bv.bv_val = buf;
+ if ( acl_string_expand( &bv, &b->a_sockname_pat, &e->e_nname, val, matches ) )
+ {
+ continue;
+ }
+
+ if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_sock_name ) != 0 ) {
+ continue;
+ }
+
+ } else {
+ if ( ber_bvstrcasecmp( &b->a_sockname_pat, &op->o_conn->c_sock_name ) != 0 ) {
+ continue;
+ }
+ }
+ }
+ }
+
+ if ( b->a_dn_at != NULL ) {
+ if ( acl_mask_dnattr( op, e, val, a,
+ count, state, mask,
+ &b->a_dn, &op->o_ndn ) )
+ {
+ continue;
+ }
+ }
+
+ if ( b->a_realdn_at != NULL ) {
+ struct berval ndn;
+
+ if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
+ {
+ ndn = op->o_conn->c_ndn;
+ } else {
+ ndn = op->o_ndn;
+ }
+
+ if ( acl_mask_dnattr( op, e, val, a,
+ count, state, mask,
+ &b->a_realdn, &ndn ) )
+ {
+ continue;
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
+ struct berval bv;
+ struct berval ndn = BER_BVNULL;
+ int rc;
+
+ if ( op->o_ndn.bv_len == 0 ) {
+ continue;
+ }
+
+ Debug( LDAP_DEBUG_ACL, "<= check a_group_pat: %s\n",
+ b->a_group_pat.bv_val, 0, 0 );
+
+ /* b->a_group is an unexpanded entry name, expanded it should be an
+ * entry with objectclass group* and we test to see if odn is one of
+ * the values in the attribute group
+ */
+ /* see if asker is listed in dnattr */
+ if ( b->a_group_style == ACL_STYLE_EXPAND ) {
+ char buf[ACL_BUF_SIZE];
+ AclRegexMatches tmp_matches,
+ *tmp_matchesp = &tmp_matches;
+ regmatch_t *tmp_data;
+
+ MATCHES_MEMSET( &tmp_matches );
+ tmp_data = &tmp_matches.dn_data[0];
+
+ bv.bv_len = sizeof(buf) - 1;
+ bv.bv_val = buf;
+
+ rc = 0;
+
+ if ( a->acl_attrval_style == ACL_STYLE_REGEX )
+ tmp_matchesp = matches;
+ else switch ( a->acl_dn_style ) {
+ case ACL_STYLE_REGEX:
+ if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
+ tmp_matchesp = matches;
+ break;
+ }
+
+ /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
+ case ACL_STYLE_BASE:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 1;
+ break;
+
+ case ACL_STYLE_ONE:
+ case ACL_STYLE_SUBTREE:
+ case ACL_STYLE_CHILDREN:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+
+ tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
+ tmp_data[1].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 2;
+ break;
+
+ default:
+ /* error */
+ rc = 1;
+ break;
+ }
+
+ if ( rc ) {
+ continue;
+ }
+
+ if ( acl_string_expand( &bv, &b->a_group_pat,
+ &e->e_nname, val,
+ tmp_matchesp ) )
+ {
+ continue;
+ }
+
+ if ( dnNormalize( 0, NULL, NULL, &bv, &ndn,
+ op->o_tmpmemctx ) != LDAP_SUCCESS )
+ {
+ /* did not expand to a valid dn */
+ continue;
+ }
+
+ bv = ndn;
+
+ } else {
+ bv = b->a_group_pat;
+ }
+
+ rc = backend_group( op, e, &bv, &op->o_ndn,
+ b->a_group_oc, b->a_group_at );
+
+ if ( ndn.bv_val ) {
+ slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
+ }
+
+ if ( rc != 0 ) {
+ continue;
+ }
+ }
+
+ if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
+ struct berval bv;
+ char buf[ACL_BUF_SIZE];
+
+ Debug( LDAP_DEBUG_ACL, "<= check a_set_pat: %s\n",
+ b->a_set_pat.bv_val, 0, 0 );
+
+ if ( b->a_set_style == ACL_STYLE_EXPAND ) {
+ AclRegexMatches tmp_matches,
+ *tmp_matchesp = &tmp_matches;
+ int rc = 0;
+ regmatch_t *tmp_data;
+
+ MATCHES_MEMSET( &tmp_matches );
+ tmp_data = &tmp_matches.dn_data[0];
+
+ bv.bv_len = sizeof( buf ) - 1;
+ bv.bv_val = buf;
+
+ rc = 0;
+
+ if ( a->acl_attrval_style == ACL_STYLE_REGEX )
+ tmp_matchesp = matches;
+ else switch ( a->acl_dn_style ) {
+ case ACL_STYLE_REGEX:
+ if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
+ tmp_matchesp = matches;
+ break;
+ }
+
+ /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
+ case ACL_STYLE_BASE:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_matches.dn_count = 1;
+ break;
+
+ case ACL_STYLE_ONE:
+ case ACL_STYLE_SUBTREE:
+ case ACL_STYLE_CHILDREN:
+ tmp_data[0].rm_so = 0;
+ tmp_data[0].rm_eo = e->e_nname.bv_len;
+ tmp_data[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
+ tmp_data[1].rm_eo = e->e_nname.bv_len; tmp_matches.dn_count = 2;
+ break;
+
+ default:
+ /* error */
+ rc = 1;
+ break;
+ }
+
+ if ( rc ) {
+ continue;
+ }
+
+ if ( acl_string_expand( &bv, &b->a_set_pat,
+ &e->e_nname, val,
+ tmp_matchesp ) )
+ {
+ continue;
+ }
+
+ } else {
+ bv = b->a_set_pat;
+ }
+
+ if ( acl_match_set( &bv, op, e, NULL ) == 0 ) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_ssf ) {
+ Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
+ b->a_authz.sai_ssf, op->o_ssf, 0 );
+ if ( b->a_authz.sai_ssf > op->o_ssf ) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_transport_ssf ) {
+ Debug( LDAP_DEBUG_ACL,
+ "<= check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
+ b->a_authz.sai_transport_ssf, op->o_transport_ssf, 0 );
+ if ( b->a_authz.sai_transport_ssf > op->o_transport_ssf ) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_tls_ssf ) {
+ Debug( LDAP_DEBUG_ACL,
+ "<= check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
+ b->a_authz.sai_tls_ssf, op->o_tls_ssf, 0 );
+ if ( b->a_authz.sai_tls_ssf > op->o_tls_ssf ) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_sasl_ssf ) {
+ Debug( LDAP_DEBUG_ACL,
+ "<= check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
+ b->a_authz.sai_sasl_ssf, op->o_sasl_ssf, 0 );
+ if ( b->a_authz.sai_sasl_ssf > op->o_sasl_ssf ) {
+ continue;
+ }
+ }
+
+#ifdef SLAP_DYNACL
+ if ( b->a_dynacl ) {
+ slap_dynacl_t *da;
+ slap_access_t tgrant, tdeny;
+
+ Debug( LDAP_DEBUG_ACL, "<= check a_dynacl\n",
+ 0, 0, 0 );
+
+ /* this case works different from the others above.
+ * since dynamic ACL's themselves give permissions, we need
+ * to first check b->a_access_mask, the ACL's access level.
+ */
+ /* first check if the right being requested
+ * is allowed by the ACL clause.
+ */
+ if ( ! ACL_PRIV_ISSET( b->a_access_mask, a2pmask ) ) {
+ continue;
+ }
+
+ /* start out with nothing granted, nothing denied */
+ ACL_INVALIDATE(tgrant);
+ ACL_INVALIDATE(tdeny);
+
+ for ( da = b->a_dynacl; da; da = da->da_next ) {
+ slap_access_t grant,
+ deny;
+
+ ACL_INVALIDATE(grant);
+ ACL_INVALIDATE(deny);
+
+ Debug( LDAP_DEBUG_ACL, " <= check a_dynacl: %s\n",
+ da->da_name, 0, 0 );
+
+ /*
+ * XXXmanu Only DN matches are supplied
+ * sending attribute values matches require
+ * an API update
+ */
+ (void)da->da_mask( da->da_private, op, e, desc,
+ val, matches->dn_count, matches->dn_data,
+ &grant, &deny );
+
+ tgrant |= grant;
+ tdeny |= deny;
+ }
+
+ /* remove anything that the ACL clause does not allow */
+ tgrant &= b->a_access_mask & ACL_PRIV_MASK;
+ tdeny &= ACL_PRIV_MASK;
+
+ /* see if we have anything to contribute */
+ if( ACL_IS_INVALID(tgrant) && ACL_IS_INVALID(tdeny) ) {
+ continue;
+ }
+
+ /* this could be improved by changing slap_acl_mask so that it can deal with
+ * by clauses that return grant/deny pairs. Right now, it does either
+ * additive or subtractive rights, but not both at the same time. So,
+ * we need to combine the grant/deny pair into a single rights mask in
+ * a smart way: if either grant or deny is "empty", then we use the
+ * opposite as is, otherwise we remove any denied rights from the grant
+ * rights mask and construct an additive mask.
+ */
+ if (ACL_IS_INVALID(tdeny)) {
+ modmask = tgrant | ACL_PRIV_ADDITIVE;
+
+ } else if (ACL_IS_INVALID(tgrant)) {
+ modmask = tdeny | ACL_PRIV_SUBSTRACTIVE;
+
+ } else {
+ modmask = (tgrant & ~tdeny) | ACL_PRIV_ADDITIVE;
+ }
+
+ } else
+#endif /* SLAP_DYNACL */
+ {
+ modmask = b->a_access_mask;
+ }
+
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_mask: [%d] applying %s (%s)\n",
+ i, accessmask2str( modmask, accessmaskbuf, 1 ),
+ b->a_type == ACL_CONTINUE
+ ? "continue"
+ : b->a_type == ACL_BREAK
+ ? "break"
+ : "stop" );
+ /* save old mask */
+ oldmask = *mask;
+
+ if( ACL_IS_ADDITIVE(modmask) ) {
+ /* add privs */
+ ACL_PRIV_SET( *mask, modmask );
+
+ /* cleanup */
+ ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
+
+ } else if( ACL_IS_SUBTRACTIVE(modmask) ) {
+ /* substract privs */
+ ACL_PRIV_CLR( *mask, modmask );
+
+ /* cleanup */
+ ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
+
+ } else {
+ /* assign privs */
+ *mask = modmask;
+ }
+
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_mask: [%d] mask: %s\n",
+ i, accessmask2str(*mask, accessmaskbuf, 1), 0 );
+
+ if( b->a_type == ACL_CONTINUE ) {
+ continue;
+
+ } else if ( b->a_type == ACL_BREAK ) {
+ return ACL_BREAK;
+
+ } else {
+ return ACL_STOP;
+ }
+ }
+
+ /* implicit "by * none" clause */
+ ACL_INIT(*mask);
+
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
+ accessmask2str(*mask, accessmaskbuf, 1), 0, 0 );
+ return ACL_STOP;
+}
+
+/*
+ * acl_check_modlist - check access control on the given entry to see if
+ * it allows the given modifications by the user associated with op.
+ * returns 1 if mods allowed ok
+ * 0 mods not allowed
+ */
+
+int
+acl_check_modlist(
+ Operation *op,
+ Entry *e,
+ Modifications *mlist )
+{
+ struct berval *bv;
+ AccessControlState state = ACL_STATE_INIT;
+ Backend *be;
+ int be_null = 0;
+ int ret = 1; /* default is access allowed */
+
+ be = op->o_bd;
+ if ( be == NULL ) {
+ be = LDAP_STAILQ_FIRST(&backendDB);
+ be_null = 1;
+ op->o_bd = be;
+ }
+ assert( be != NULL );
+
+ /* If ADD attribute checking is not enabled, just allow it */
+ if ( op->o_tag == LDAP_REQ_ADD && !SLAP_DBACL_ADD( be ))
+ return 1;
+
+ /* short circuit root database access */
+ if ( be_isroot( op ) ) {
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_access_allowed: granted to database root\n",
+ 0, 0, 0 );
+ goto done;
+ }
+
+ /* use backend default access if no backend acls */
+ if( op->o_bd != NULL && op->o_bd->be_acl == NULL && frontendDB->be_acl == NULL ) {
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: backend default %s access %s to \"%s\"\n",
+ access2str( ACL_WRITE ),
+ op->o_bd->be_dfltaccess >= ACL_WRITE
+ ? "granted" : "denied",
+ op->o_dn.bv_val );
+ ret = (op->o_bd->be_dfltaccess >= ACL_WRITE);
+ goto done;
+ }
+
+ for ( ; mlist != NULL; mlist = mlist->sml_next ) {
+ /*
+ * Internal mods are ignored by ACL_WRITE checking
+ */
+ if ( mlist->sml_flags & SLAP_MOD_INTERNAL ) {
+ Debug( LDAP_DEBUG_ACL, "acl: internal mod %s:"
+ " modify access granted\n",
+ mlist->sml_desc->ad_cname.bv_val, 0, 0 );
+ continue;
+ }
+
+ /*
+ * no-user-modification operational attributes are ignored
+ * by ACL_WRITE checking as any found here are not provided
+ * by the user
+ */
+ if ( is_at_no_user_mod( mlist->sml_desc->ad_type )
+ && ! ( mlist->sml_flags & SLAP_MOD_MANAGING ) )
+ {
+ Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
+ " modify access granted\n",
+ mlist->sml_desc->ad_cname.bv_val, 0, 0 );
+ continue;
+ }
+
+ switch ( mlist->sml_op ) {
+ case LDAP_MOD_REPLACE:
+ case LDAP_MOD_INCREMENT:
+ /*
+ * We must check both permission to delete the whole
+ * attribute and permission to add the specific attributes.
+ * This prevents abuse from selfwriters.
+ */
+ if ( ! access_allowed( op, e,
+ mlist->sml_desc, NULL,
+ ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
+ &state ) )
+ {
+ ret = 0;
+ goto done;
+ }
+
+ if ( mlist->sml_values == NULL ) break;
+
+ /* fall thru to check value to add */
+
+ case LDAP_MOD_ADD:
+ case SLAP_MOD_ADD_IF_NOT_PRESENT:
+ assert( mlist->sml_values != NULL );
+
+ if ( mlist->sml_op == SLAP_MOD_ADD_IF_NOT_PRESENT
+ && attr_find( e->e_attrs, mlist->sml_desc ) )
+ {
+ break;
+ }
+
+ for ( bv = mlist->sml_nvalues
+ ? mlist->sml_nvalues : mlist->sml_values;
+ bv->bv_val != NULL; bv++ )
+ {
+ if ( ! access_allowed( op, e,
+ mlist->sml_desc, bv,
+ ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WADD,
+ &state ) )
+ {
+ ret = 0;
+ goto done;
+ }
+ }
+ break;
+
+ case LDAP_MOD_DELETE:
+ case SLAP_MOD_SOFTDEL:
+ if ( mlist->sml_values == NULL ) {
+ if ( ! access_allowed( op, e,
+ mlist->sml_desc, NULL,
+ ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
+ &state ) )
+ {
+ ret = 0;
+ goto done;
+ }
+ break;
+ }
+ for ( bv = mlist->sml_nvalues
+ ? mlist->sml_nvalues : mlist->sml_values;
+ bv->bv_val != NULL; bv++ )
+ {
+ if ( ! access_allowed( op, e,
+ mlist->sml_desc, bv,
+ ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
+ &state ) )
+ {
+ ret = 0;
+ goto done;
+ }
+ }
+ break;
+
+ case SLAP_MOD_SOFTADD:
+ /* allow adding attribute via modrdn thru */
+ break;
+
+ default:
+ assert( 0 );
+ /* not reached */
+ ret = 0;
+ break;
+ }
+ }
+
+done:
+ if (be_null) op->o_bd = NULL;
+ return( ret );
+}
+
+int
+acl_get_part(
+ struct berval *list,
+ int ix,
+ char sep,
+ struct berval *bv )
+{
+ int len;
+ char *p;
+
+ if ( bv ) {
+ BER_BVZERO( bv );
+ }
+ len = list->bv_len;
+ p = list->bv_val;
+ while ( len >= 0 && --ix >= 0 ) {
+ while ( --len >= 0 && *p++ != sep )
+ ;
+ }
+ while ( len >= 0 && *p == ' ' ) {
+ len--;
+ p++;
+ }
+ if ( len < 0 ) {
+ return -1;
+ }
+
+ if ( !bv ) {
+ return 0;
+ }
+
+ bv->bv_val = p;
+ while ( --len >= 0 && *p != sep ) {
+ bv->bv_len++;
+ p++;
+ }
+ while ( bv->bv_len > 0 && *--p == ' ' ) {
+ bv->bv_len--;
+ }
+
+ return bv->bv_len;
+}
+
+typedef struct acl_set_gather_t {
+ SetCookie *cookie;
+ BerVarray bvals;
+} acl_set_gather_t;
+
+static int
+acl_set_cb_gather( Operation *op, SlapReply *rs )
+{
+ acl_set_gather_t *p = (acl_set_gather_t *)op->o_callback->sc_private;
+
+ if ( rs->sr_type == REP_SEARCH ) {
+ BerValue bvals[ 2 ];
+ BerVarray bvalsp = NULL;
+ int j;
+
+ for ( j = 0; !BER_BVISNULL( &rs->sr_attrs[ j ].an_name ); j++ ) {
+ AttributeDescription *desc = rs->sr_attrs[ j ].an_desc;
+
+ if ( desc == NULL ) {
+ continue;
+ }
+
+ if ( desc == slap_schema.si_ad_entryDN ) {
+ bvalsp = bvals;
+ bvals[ 0 ] = rs->sr_entry->e_nname;
+ BER_BVZERO( &bvals[ 1 ] );
+
+ } else {
+ Attribute *a;
+
+ a = attr_find( rs->sr_entry->e_attrs, desc );
+ if ( a != NULL ) {
+ bvalsp = a->a_nvals;
+ }
+ }
+
+ if ( bvalsp ) {
+ p->bvals = slap_set_join( p->cookie, p->bvals,
+ ( '|' | SLAP_SET_RREF ), bvalsp );
+ }
+ }
+
+ } else {
+ switch ( rs->sr_type ) {
+ case REP_SEARCHREF:
+ case REP_INTERMEDIATE:
+ /* ignore */
+ break;
+
+ default:
+ assert( rs->sr_type == REP_RESULT );
+ break;
+ }
+ }
+
+ return 0;
+}
+
+BerVarray
+acl_set_gather( SetCookie *cookie, struct berval *name, AttributeDescription *desc )
+{
+ AclSetCookie *cp = (AclSetCookie *)cookie;
+ int rc = 0;
+ LDAPURLDesc *ludp = NULL;
+ Operation op2 = { 0 };
+ SlapReply rs = {REP_RESULT};
+ AttributeName anlist[ 2 ], *anlistp = NULL;
+ int nattrs = 0;
+ slap_callback cb = { NULL, acl_set_cb_gather, NULL, NULL };
+ acl_set_gather_t p = { 0 };
+
+ /* this routine needs to return the bervals instead of
+ * plain strings, since syntax is not known. It should
+ * also return the syntax or some "comparison cookie".
+ */
+ if ( strncasecmp( name->bv_val, "ldap:///", STRLENOF( "ldap:///" ) ) != 0 ) {
+ return acl_set_gather2( cookie, name, desc );
+ }
+
+ rc = ldap_url_parse( name->bv_val, &ludp );
+ if ( rc != LDAP_URL_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "%s acl_set_gather: unable to parse URL=\"%s\"\n",
+ cp->asc_op->o_log_prefix, name->bv_val, 0 );
+
+ rc = LDAP_PROTOCOL_ERROR;
+ goto url_done;
+ }
+
+ if ( ( ludp->lud_host && ludp->lud_host[0] ) || ludp->lud_exts )
+ {
+ /* host part must be empty */
+ /* extensions parts must be empty */
+ Debug( LDAP_DEBUG_TRACE,
+ "%s acl_set_gather: host/exts must be absent in URL=\"%s\"\n",
+ cp->asc_op->o_log_prefix, name->bv_val, 0 );
+
+ rc = LDAP_PROTOCOL_ERROR;
+ goto url_done;
+ }
+
+ /* Grab the searchbase and see if an appropriate database can be found */
+ ber_str2bv( ludp->lud_dn, 0, 0, &op2.o_req_dn );
+ rc = dnNormalize( 0, NULL, NULL, &op2.o_req_dn,
+ &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
+ BER_BVZERO( &op2.o_req_dn );
+ if ( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "%s acl_set_gather: DN=\"%s\" normalize failed\n",
+ cp->asc_op->o_log_prefix, ludp->lud_dn, 0 );
+
+ goto url_done;
+ }
+
+ op2.o_bd = select_backend( &op2.o_req_ndn, 1 );
+ if ( ( op2.o_bd == NULL ) || ( op2.o_bd->be_search == NULL ) ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "%s acl_set_gather: no database could be selected for DN=\"%s\"\n",
+ cp->asc_op->o_log_prefix, op2.o_req_ndn.bv_val, 0 );
+
+ rc = LDAP_NO_SUCH_OBJECT;
+ goto url_done;
+ }
+
+ /* Grab the filter */
+ if ( ludp->lud_filter ) {
+ ber_str2bv_x( ludp->lud_filter, 0, 0, &op2.ors_filterstr,
+ cp->asc_op->o_tmpmemctx );
+ op2.ors_filter = str2filter_x( cp->asc_op, op2.ors_filterstr.bv_val );
+ if ( op2.ors_filter == NULL ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "%s acl_set_gather: unable to parse filter=\"%s\"\n",
+ cp->asc_op->o_log_prefix, op2.ors_filterstr.bv_val, 0 );
+
+ rc = LDAP_PROTOCOL_ERROR;
+ goto url_done;
+ }
+
+ } else {
+ op2.ors_filterstr = *slap_filterstr_objectClass_pres;
+ op2.ors_filter = (Filter *)slap_filter_objectClass_pres;
+ }
+
+
+ /* Grab the scope */
+ op2.ors_scope = ludp->lud_scope;
+
+ /* Grap the attributes */
+ if ( ludp->lud_attrs ) {
+ int i;
+
+ for ( ; ludp->lud_attrs[ nattrs ]; nattrs++ )
+ ;
+
+ anlistp = slap_sl_calloc( sizeof( AttributeName ), nattrs + 2,
+ cp->asc_op->o_tmpmemctx );
+
+ for ( i = 0, nattrs = 0; ludp->lud_attrs[ i ]; i++ ) {
+ struct berval name;
+ AttributeDescription *desc = NULL;
+ const char *text = NULL;
+
+ ber_str2bv( ludp->lud_attrs[ i ], 0, 0, &name );
+ rc = slap_bv2ad( &name, &desc, &text );
+ if ( rc == LDAP_SUCCESS ) {
+ anlistp[ nattrs ].an_name = name;
+ anlistp[ nattrs ].an_desc = desc;
+ nattrs++;
+ }
+ }
+
+ } else {
+ anlistp = anlist;
+ }
+
+ anlistp[ nattrs ].an_name = desc->ad_cname;
+ anlistp[ nattrs ].an_desc = desc;
+
+ BER_BVZERO( &anlistp[ nattrs + 1 ].an_name );
+
+ p.cookie = cookie;
+
+ op2.o_hdr = cp->asc_op->o_hdr;
+ op2.o_tag = LDAP_REQ_SEARCH;
+ op2.o_ndn = op2.o_bd->be_rootndn;
+ op2.o_callback = &cb;
+ slap_op_time( &op2.o_time, &op2.o_tincr );
+ op2.o_do_not_cache = 1;
+ op2.o_is_auth_check = 0;
+ ber_dupbv_x( &op2.o_req_dn, &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
+ op2.ors_slimit = SLAP_NO_LIMIT;
+ op2.ors_tlimit = SLAP_NO_LIMIT;
+ op2.ors_attrs = anlistp;
+ op2.ors_attrsonly = 0;
+ op2.o_private = cp->asc_op->o_private;
+ op2.o_extra = cp->asc_op->o_extra;
+
+ cb.sc_private = &p;
+
+ rc = op2.o_bd->be_search( &op2, &rs );
+ if ( rc != 0 ) {
+ goto url_done;
+ }
+
+url_done:;
+ if ( op2.ors_filter && op2.ors_filter != slap_filter_objectClass_pres ) {
+ filter_free_x( cp->asc_op, op2.ors_filter, 1 );
+ }
+ if ( !BER_BVISNULL( &op2.o_req_ndn ) ) {
+ slap_sl_free( op2.o_req_ndn.bv_val, cp->asc_op->o_tmpmemctx );
+ }
+ if ( !BER_BVISNULL( &op2.o_req_dn ) ) {
+ slap_sl_free( op2.o_req_dn.bv_val, cp->asc_op->o_tmpmemctx );
+ }
+ if ( ludp ) {
+ ldap_free_urldesc( ludp );
+ }
+ if ( anlistp && anlistp != anlist ) {
+ slap_sl_free( anlistp, cp->asc_op->o_tmpmemctx );
+ }
+
+ return p.bvals;
+}
+
+BerVarray
+acl_set_gather2( SetCookie *cookie, struct berval *name, AttributeDescription *desc )
+{
+ AclSetCookie *cp = (AclSetCookie *)cookie;
+ BerVarray bvals = NULL;
+ struct berval ndn;
+ int rc = 0;
+
+ /* this routine needs to return the bervals instead of
+ * plain strings, since syntax is not known. It should
+ * also return the syntax or some "comparison cookie".
+ */
+ rc = dnNormalize( 0, NULL, NULL, name, &ndn, cp->asc_op->o_tmpmemctx );
+ if ( rc == LDAP_SUCCESS ) {
+ if ( desc == slap_schema.si_ad_entryDN ) {
+ bvals = (BerVarray)slap_sl_malloc( sizeof( BerValue ) * 2,
+ cp->asc_op->o_tmpmemctx );
+ bvals[ 0 ] = ndn;
+ BER_BVZERO( &bvals[ 1 ] );
+ BER_BVZERO( &ndn );
+
+ } else {
+ backend_attribute( cp->asc_op,
+ cp->asc_e, &ndn, desc, &bvals, ACL_NONE );
+ }
+
+ if ( !BER_BVISNULL( &ndn ) ) {
+ slap_sl_free( ndn.bv_val, cp->asc_op->o_tmpmemctx );
+ }
+ }
+
+ return bvals;
+}
+
+int
+acl_match_set (
+ struct berval *subj,
+ Operation *op,
+ Entry *e,
+ struct berval *default_set_attribute )
+{
+ struct berval set = BER_BVNULL;
+ int rc = 0;
+ AclSetCookie cookie;
+
+ if ( default_set_attribute == NULL ) {
+ set = *subj;
+
+ } else {
+ struct berval subjdn, ndn = BER_BVNULL;
+ struct berval setat;
+ BerVarray bvals = NULL;
+ const char *text;
+ AttributeDescription *desc = NULL;
+
+ /* format of string is "entry/setAttrName" */
+ if ( acl_get_part( subj, 0, '/', &subjdn ) < 0 ) {
+ return 0;
+ }
+
+ if ( acl_get_part( subj, 1, '/', &setat ) < 0 ) {
+ setat = *default_set_attribute;
+ }
+
+ /*
+ * NOTE: dnNormalize honors the ber_len field
+ * as the length of the dn to be normalized
+ */
+ if ( slap_bv2ad( &setat, &desc, &text ) == LDAP_SUCCESS ) {
+ if ( dnNormalize( 0, NULL, NULL, &subjdn, &ndn, op->o_tmpmemctx ) == LDAP_SUCCESS )
+ {
+ backend_attribute( op, e, &ndn, desc, &bvals, ACL_NONE );
+ if ( bvals != NULL && !BER_BVISNULL( &bvals[0] ) ) {
+ int i;
+
+ set = bvals[0];
+ BER_BVZERO( &bvals[0] );
+ for ( i = 1; !BER_BVISNULL( &bvals[i] ); i++ )
+ /* count */ ;
+ bvals[0].bv_val = bvals[i-1].bv_val;
+ BER_BVZERO( &bvals[i-1] );
+ }
+ ber_bvarray_free_x( bvals, op->o_tmpmemctx );
+ slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
+ }
+ }
+ }
+
+ if ( !BER_BVISNULL( &set ) ) {
+ cookie.asc_op = op;
+ cookie.asc_e = e;
+ rc = ( slap_set_filter(
+ acl_set_gather,
+ (SetCookie *)&cookie, &set,
+ &op->o_ndn, &e->e_nname, NULL ) > 0 );
+ if ( set.bv_val != subj->bv_val ) {
+ slap_sl_free( set.bv_val, op->o_tmpmemctx );
+ }
+ }
+
+ return(rc);
+}
+
+#ifdef SLAP_DYNACL
+
+/*
+ * dynamic ACL infrastructure
+ */
+static slap_dynacl_t *da_list = NULL;
+
+int
+slap_dynacl_register( slap_dynacl_t *da )
+{
+ slap_dynacl_t *tmp;
+
+ for ( tmp = da_list; tmp; tmp = tmp->da_next ) {
+ if ( strcasecmp( da->da_name, tmp->da_name ) == 0 ) {
+ break;
+ }
+ }
+
+ if ( tmp != NULL ) {
+ return -1;
+ }
+
+ if ( da->da_mask == NULL ) {
+ return -1;
+ }
+
+ da->da_private = NULL;
+ da->da_next = da_list;
+ da_list = da;
+
+ return 0;
+}
+
+static slap_dynacl_t *
+slap_dynacl_next( slap_dynacl_t *da )
+{
+ if ( da ) {
+ return da->da_next;
+ }
+ return da_list;
+}
+
+slap_dynacl_t *
+slap_dynacl_get( const char *name )
+{
+ slap_dynacl_t *da;
+
+ for ( da = slap_dynacl_next( NULL ); da; da = slap_dynacl_next( da ) ) {
+ if ( strcasecmp( da->da_name, name ) == 0 ) {
+ break;
+ }
+ }
+
+ return da;
+}
+#endif /* SLAP_DYNACL */
+
+/*
+ * statically built-in dynamic ACL initialization
+ */
+static int (*acl_init_func[])( void ) = {
+#ifdef SLAP_DYNACL
+ /* TODO: remove when ACI will only be dynamic */
+#if SLAPD_ACI_ENABLED == SLAPD_MOD_STATIC
+ dynacl_aci_init,
+#endif /* SLAPD_ACI_ENABLED */
+#endif /* SLAP_DYNACL */
+
+ NULL
+};
+
+int
+acl_init( void )
+{
+ int i, rc;
+
+ for ( i = 0; acl_init_func[ i ] != NULL; i++ ) {
+ rc = (*(acl_init_func[ i ]))();
+ if ( rc != 0 ) {
+ return rc;
+ }
+ }
+
+ return 0;
+}
+
+int
+acl_string_expand(
+ struct berval *bv,
+ struct berval *pat,
+ struct berval *dn_matches,
+ struct berval *val_matches,
+ AclRegexMatches *matches)
+{
+ ber_len_t size;
+ char *sp;
+ char *dp;
+ int flag;
+ enum { DN_FLAG, VAL_FLAG } tflag;
+
+ size = 0;
+ bv->bv_val[0] = '\0';
+ bv->bv_len--; /* leave space for lone $ */
+
+ flag = 0;
+ tflag = DN_FLAG;
+ for ( dp = bv->bv_val, sp = pat->bv_val; size < bv->bv_len &&
+ sp < pat->bv_val + pat->bv_len ; sp++ )
+ {
+ /* did we previously see a $ */
+ if ( flag ) {
+ if ( flag == 1 && *sp == '$' ) {
+ *dp++ = '$';
+ size++;
+ flag = 0;
+ tflag = DN_FLAG;
+
+ } else if ( flag == 2 && *sp == 'v' /*'}'*/) {
+ tflag = VAL_FLAG;
+
+ } else if ( flag == 2 && *sp == 'd' /*'}'*/) {
+ tflag = DN_FLAG;
+
+ } else if ( flag == 1 && *sp == '{' /*'}'*/) {
+ flag = 2;
+
+ } else if ( *sp >= '0' && *sp <= '9' ) {
+ int nm;
+ regmatch_t *m;
+ char *data;
+ int n;
+ int i;
+ int l;
+
+ n = *sp - '0';
+
+ if ( flag == 2 ) {
+ for ( sp++; *sp != '\0' && *sp != /*'{'*/ '}'; sp++ ) {
+ if ( *sp >= '0' && *sp <= '9' ) {
+ n = 10*n + ( *sp - '0' );
+ }
+ }
+
+ if ( *sp != /*'{'*/ '}' ) {
+ /* FIXME: error */
+ return 1;
+ }
+ }
+
+ switch (tflag) {
+ case DN_FLAG:
+ nm = matches->dn_count;
+ m = matches->dn_data;
+ data = dn_matches ? dn_matches->bv_val : NULL;
+ break;
+ case VAL_FLAG:
+ nm = matches->val_count;
+ m = matches->val_data;
+ data = val_matches ? val_matches->bv_val : NULL;
+ break;
+ default:
+ assert( 0 );
+ }
+ if ( n >= nm ) {
+ /* FIXME: error */
+ return 1;
+ }
+ if ( data == NULL ) {
+ /* FIXME: error */
+ return 1;
+ }
+
+ *dp = '\0';
+ i = m[n].rm_so;
+ l = m[n].rm_eo;
+
+ for ( ; size < bv->bv_len && i < l; size++, i++ ) {
+ *dp++ = data[i];
+ }
+ *dp = '\0';
+
+ flag = 0;
+ tflag = DN_FLAG;
+ }
+ } else {
+ if (*sp == '$') {
+ flag = 1;
+ } else {
+ *dp++ = *sp;
+ size++;
+ }
+ }
+ }
+
+ if ( flag ) {
+ /* must have ended with a single $ */
+ *dp++ = '$';
+ size++;
+ }
+
+ *dp = '\0';
+ bv->bv_len = size;
+
+ Debug( LDAP_DEBUG_ACL, "=> acl_string_expand: pattern: %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
+ Debug( LDAP_DEBUG_ACL, "=> acl_string_expand: expanded: %s\n", bv->bv_val, 0, 0 );
+
+ return 0;
+}
+
+static int
+regex_matches(
+ struct berval *pat, /* pattern to expand and match against */
+ char *str, /* string to match against pattern */
+ struct berval *dn_matches, /* buffer with $N expansion variables from DN */
+ struct berval *val_matches, /* buffer with $N expansion variables from val */
+ AclRegexMatches *matches /* offsets in buffer for $N expansion variables */
+)
+{
+ regex_t re;
+ char newbuf[ACL_BUF_SIZE];
+ struct berval bv;
+ int rc;
+
+ bv.bv_len = sizeof( newbuf ) - 1;
+ bv.bv_val = newbuf;
+
+ if (str == NULL) {
+ str = "";
+ };
+
+ if ( acl_string_expand( &bv, pat, dn_matches, val_matches, matches )) {
+ Debug( LDAP_DEBUG_TRACE,
+ "expand( \"%s\", \"%s\") failed\n",
+ pat->bv_val, str, 0 );
+ return( 0 );
+ }
+ rc = regcomp( &re, newbuf, REG_EXTENDED|REG_ICASE );
+ if ( rc ) {
+ char error[ACL_BUF_SIZE];
+ regerror( rc, &re, error, sizeof( error ) );
+
+ Debug( LDAP_DEBUG_TRACE,
+ "compile( \"%s\", \"%s\") failed %s\n",
+ pat->bv_val, str, error );
+ return( 0 );
+ }
+
+ rc = regexec( &re, str, 0, NULL, 0 );
+ regfree( &re );
+
+ Debug( LDAP_DEBUG_TRACE,
+ "=> regex_matches: string: %s\n", str, 0, 0 );
+ Debug( LDAP_DEBUG_TRACE,
+ "=> regex_matches: rc: %d %s\n",
+ rc, !rc ? "matches" : "no matches", 0 );
+ return( !rc );
+}
+