/* acl.c - routines to parse and check acl's */
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
#include "portable.h"
#include <ac/string.h>
#include "slap.h"
-
-static int regex_matches(char *pat, char *str, char *buf, regmatch_t *matches);
-static void string_expand(char *newbuf, int bufsiz, char *pattern,
- char *match, regmatch_t *matches);
-
+#include "sets.h"
+
+static AccessControl * acl_get(
+ AccessControl *ac, int *count,
+ Backend *be, Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ int nmatches, regmatch_t *matches );
+
+static slap_control_t acl_mask(
+ AccessControl *ac, slap_mask_t *mask,
+ Backend *be, Connection *conn, Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ regmatch_t *matches );
+
+#ifdef SLAPD_ACI_ENABLED
+static int aci_mask(
+ Backend *be,
+ Connection *conn,
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ struct berval *aci,
+ regmatch_t *matches,
+ slap_access_t *grant,
+ slap_access_t *deny );
+#endif
+
+static int regex_matches(
+ char *pat, char *str, char *buf, regmatch_t *matches);
+static void string_expand(
+ char *newbuf, int bufsiz, char *pattern,
+ char *match, regmatch_t *matches);
+
+char **aci_set_gather (void *cookie, char *name, char *attr);
+static int aci_match_set ( struct berval *subj, Backend *be,
+ Entry *e, Connection *conn, Operation *op, int setref );
/*
* 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 finds
- * the applicable acl and calls acl_access_allowed() to make the
- * decision.
+ * the whole attribute is assumed (all values).
*
- * returns 0 access NOT allowed
- * 1 access allowed
+ * This routine loops through all access controls and calls
+ * 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
*/
int
Connection *conn,
Operation *op,
Entry *e,
- char *attr,
+ AttributeDescription *desc,
struct berval *val,
- int access
-)
+ slap_access_t access )
{
- int rc;
- struct acl *a;
- char *edn;
-
- regmatch_t matches[MAXREMATCHES];
- int i;
- int n;
+ int count;
+ AccessControl *a;
+#ifdef LDAP_DEBUG
+ char accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif
+ slap_mask_t mask;
+ slap_control_t control;
+ const char *attr;
+ regmatch_t matches[MAXREMATCHES];
+
+ assert( e != NULL );
+ assert( desc != NULL );
+ assert( access > ACL_NONE );
+
+ attr = desc->ad_cname->bv_val;
+
+ assert( attr != NULL );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_ENTRY,
+ "access_allowed: conn %d %s access to \"%s\" \"%s\" requested\n",
+ conn->c_connid, access2str( access ), e->e_dn, attr ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
+ access2str( access ),
+ e->e_dn, attr );
+#endif
- if ( be == NULL ) {
- return( 0 );
+ if ( op == NULL ) {
+ /* no-op call */
+ return 1;
}
- edn = e->e_ndn;
+ if ( be == NULL ) be = &backends[0];
+ assert( be != NULL );
- Debug( LDAP_DEBUG_ACL, "\n=> access_allowed: entry (%s) attr (%s)\n",
- e->e_dn, attr, 0 );
+ /* grant database root access */
+ if ( be != NULL && be_isroot( be, op->o_ndn ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_INFO,
+ "access_allowed: conn %d root access granted\n",
+ conn->c_connid));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= root access granted\n",
+ 0, 0, 0 );
+#endif
+ return 1;
+ }
- /* the lastmod attributes are ignored by ACL checking */
- if ( oc_check_no_usermod_attr( attr ) ) {
- Debug( LDAP_DEBUG_ACL, "Operational attribute: %s access allowed\n",
+ /*
+ * no-user-modification operational attributes are ignored
+ * by ACL_WRITE checking as any found here are not provided
+ * by the user
+ */
+ if ( access >= ACL_WRITE && is_at_no_user_mod( desc->ad_type )
+ && desc != slap_schema.si_ad_entry
+ && desc != slap_schema.si_ad_children )
+ {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "access_allowed: conn %d NoUserMod Operational attribute: %s access granted\n",
+ conn->c_connid, attr ));
+#else
+ Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
+ " %s access granted\n",
attr, 0, 0 );
- return(1);
+#endif
+ return 1;
+ }
+
+ /* use backend default access if no backend acls */
+ if( be != NULL && be->be_acl == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "access_allowed: conn %d backend default %s access %s to \"%s\"\n",
+ conn->c_connid, access2str( access ),
+ be->be_dfltaccess >= access ? "granted" : "denied", op->o_dn ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: backend default %s access %s to \"%s\"\n",
+ access2str( access ),
+ be->be_dfltaccess >= access ? "granted" : "denied", op->o_dn );
+#endif
+ return be->be_dfltaccess >= access;
+
+#ifdef notdef
+ /* be is always non-NULL */
+ /* use global default access if no global acls */
+ } else if ( be == NULL && global_acl == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "access_allowed: conn %d global default %s access %s to \"%s\"\n",
+ conn->c_connid, access2str( access ),
+ global_default_access >= access ? "granted" : "denied", op->o_dn ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: global default %s access %s to \"%s\"\n",
+ access2str( access ),
+ global_default_access >= access ? "granted" : "denied", op->o_dn );
+#endif
+ return global_default_access >= access;
+#endif
}
- memset(matches, 0, sizeof(matches));
+ ACL_INIT(mask);
+ memset(matches, '\0', sizeof(matches));
+
+ control = ACL_BREAK;
+ a = NULL;
+ count = 0;
- a = acl_get_applicable( be, op, e, attr, MAXREMATCHES, matches );
+ while((a = acl_get( a, &count, be, op, e, desc, MAXREMATCHES, matches )) != NULL)
+ {
+ int i;
- if (a) {
for (i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++) {
- Debug( LDAP_DEBUG_ARGS, "=> match[%d]: %d %d ", i,
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "access_allowed: conn %d match[%d]: %d %d ",
+ conn->c_connid, i, (int)matches[i].rm_so, (int)matches[i].rm_eo ));
+#else
+ Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
(int)matches[i].rm_so, (int)matches[i].rm_eo );
-
+#endif
if( matches[i].rm_so <= matches[0].rm_eo ) {
+ int n;
for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++) {
- Debug( LDAP_DEBUG_ARGS, "%c", edn[n], 0, 0 );
+ Debug( LDAP_DEBUG_ACL, "%c", e->e_ndn[n], 0, 0 );
}
}
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_ARGS, "\n" ));
+#else
Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
+#endif
}
- }
- rc = acl_access_allowed( a, be, conn, e, val, op, access, edn, matches );
+ control = acl_mask( a, &mask, be, conn, op,
+ e, desc, val, matches );
- Debug( LDAP_DEBUG_ACL, "\n=> access_allowed: exit (%s) attr (%s)\n",
- e->e_dn, attr, 0);
+ if ( control != ACL_BREAK ) {
+ break;
+ }
- return( rc );
+ memset(matches, '\0', sizeof(matches));
+ }
+
+ if ( ACL_IS_INVALID( mask ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "access_allowed: conn %d \"%s\" (%s) invalid!\n",
+ conn->c_connid, e->e_dn, attr ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: \"%s\" (%s) invalid!\n",
+ e->e_dn, attr, 0 );
+#endif
+ ACL_INIT( mask );
+
+ } else if ( control == ACL_BREAK ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "access_allowed: conn %d no more rules\n", conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: no more rules\n", 0, 0, 0);
+#endif
+ ACL_INIT( mask );
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_ENTRY,
+ "access_allowed: conn %d %s access %s by %s\n",
+ conn->c_connid,
+ access2str( access ),
+ ACL_GRANT( mask, access ) ? "granted" : "denied",
+ accessmask2str( mask, accessmaskbuf ) ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: %s access %s by %s\n",
+ access2str( access ),
+ ACL_GRANT(mask, access) ? "granted" : "denied",
+ accessmask2str( mask, accessmaskbuf ) );
+#endif
+ return ACL_GRANT(mask, access);
}
/*
- * acl_get_applicable - return the acl applicable to entry e, attribute
+ * 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().
*/
-struct acl *
-acl_get_applicable(
+static AccessControl *
+acl_get(
+ AccessControl *a,
+ int *count,
Backend *be,
- Operation *op,
+ Operation *op,
Entry *e,
- char *attr,
+ AttributeDescription *desc,
int nmatch,
- regmatch_t *matches
-)
+ regmatch_t *matches )
{
- int i;
- struct acl *a;
- char *edn;
-
- Debug( LDAP_DEBUG_ACL, "\n=> acl_get: entry (%s) attr (%s)\n",
- e->e_dn, attr, 0 );
+ const char *attr;
+ int dnlen, patlen;
- if ( be_isroot( be, op->o_ndn ) ) {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_get: no acl applicable to database root\n", 0, 0,
- 0 );
- return( NULL );
- }
+ assert( e != NULL );
+ assert( count != NULL );
+ assert( desc != NULL );
- edn = e->e_ndn;
+ attr = desc->ad_cname->bv_val;
- Debug( LDAP_DEBUG_ARGS, "=> acl_get: edn %s\n", edn, 0, 0 );
-
- /* check for a backend-specific acl that matches the entry */
- for ( i = 1, a = be->be_acl; a != NULL; a = a->acl_next, i++ ) {
- if (a->acl_dnpat != NULL) {
- Debug( LDAP_DEBUG_TRACE, "=> dnpat: [%d] %s nsub: %d\n",
- i, a->acl_dnpat, (int) a->acl_dnre.re_nsub);
-
- if (regexec(&a->acl_dnre, edn, nmatch, matches, 0))
- continue;
- else
- Debug( LDAP_DEBUG_TRACE, "=> acl_get:[%d] backend ACL match\n",
- i, 0, 0);
- }
+ assert( attr != NULL );
- if ( a->acl_filter != NULL ) {
- if ( test_filter( NULL, NULL, NULL, e, a->acl_filter ) != 0 ) {
- continue;
- }
+ if( a == NULL ) {
+ if( be == NULL ) {
+ a = global_acl;
+ } else {
+ a = be->be_acl;
}
- Debug( LDAP_DEBUG_ARGS, "=> acl_get: [%d] check attr %s\n", i, attr, 0);
+ assert( a != NULL );
- if ( attr == NULL || a->acl_attrs == NULL ||
- charray_inlist( a->acl_attrs, attr ) )
- {
- Debug( LDAP_DEBUG_ACL, "<= acl_get: [%d] backend acl %s attr: %s\n",
- i, e->e_dn, attr );
- return( a );
- }
- matches[0].rm_so = matches[0].rm_eo = -1;
+ } else {
+ a = a->acl_next;
}
- /* check for a global acl that matches the entry */
- for ( i = 1, a = global_acl; a != NULL; a = a->acl_next, i++ ) {
- if (a->acl_dnpat != NULL) {
- Debug( LDAP_DEBUG_TRACE, "=> dnpat: [%d] %s nsub: %d\n",
- i, a->acl_dnpat, (int) a->acl_dnre.re_nsub);
+ dnlen = strlen(e->e_ndn);
+
+ for ( ; a != NULL; a = a->acl_next ) {
+ (*count) ++;
+
+ if (a->acl_dn_pat != NULL) {
+ if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_get: dnpat [%d] %s nsub: %d\n",
+ *count, a->acl_dn_pat, (int) a->acl_dn_re.re_nsub ));
+#else
+ Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n",
+ *count, a->acl_dn_pat, (int) a->acl_dn_re.re_nsub );
+#endif
+ if (regexec(&a->acl_dn_re, e->e_ndn, nmatch, matches, 0))
+ continue;
- if (regexec(&a->acl_dnre, edn, nmatch, matches, 0)) {
- continue;
} else {
- Debug( LDAP_DEBUG_TRACE, "=> acl_get: [%d] global ACL match\n",
- i, 0, 0);
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_get: dn [%d] %s\n",
+ *count, a->acl_dn_pat ));
+#else
+ Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n",
+ *count, a->acl_dn_pat, 0 );
+#endif
+ patlen = strlen( a->acl_dn_pat );
+ 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 ) {
+ char *rdn;
+ int rdnlen = -1;
+
+ if ( dnlen <= patlen )
+ continue;
+
+ if ( e->e_ndn[dnlen - patlen - 1] != ',' )
+ continue;
+
+ rdn = dn_rdn( NULL, e->e_ndn );
+ if ( rdn != NULL ) {
+ rdnlen = strlen( rdn );
+ ch_free( rdn );
+ }
+ if ( rdnlen != dnlen - patlen - 1 )
+ continue;
+
+ } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
+ if ( dnlen > patlen && e->e_ndn[dnlen - patlen - 1] != ',' )
+ continue;
+
+ } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
+ if ( dnlen <= patlen )
+ continue;
+ if ( e->e_ndn[dnlen - patlen - 1] != ',' )
+ continue;
+ }
+
+ if ( strcmp( a->acl_dn_pat, e->e_ndn + dnlen - patlen ) != 0 )
+ continue;
}
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_get: [%d] matched\n",
+ *count ));
+#else
+ Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
+ *count, 0, 0 );
+#endif
}
if ( a->acl_filter != NULL ) {
- if ( test_filter( NULL, NULL, NULL, e, a->acl_filter ) != 0 ) {
+ ber_int_t rc = test_filter( NULL, NULL, NULL, e, a->acl_filter );
+ if ( rc != LDAP_COMPARE_TRUE ) {
continue;
}
}
- Debug( LDAP_DEBUG_ARGS, "=> acl_get: [%d] check attr\n", i, 0, 0);
-
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_get: [%d] check attr %s\n",
+ *count, attr ));
+#else
+ Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] check attr %s\n",
+ *count, attr, 0);
+#endif
if ( attr == NULL || a->acl_attrs == NULL ||
- charray_inlist( a->acl_attrs, attr ) )
+ ad_inlist( desc, a->acl_attrs ) )
{
- Debug( LDAP_DEBUG_ACL, "<= acl_get: [%d] global acl %s attr: %s\n",
- i, e->e_dn, attr );
- return( a );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_get: [%d] acl %s attr: %s\n",
+ *count, e->e_dn, attr ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_get: [%d] acl %s attr: %s\n",
+ *count, e->e_dn, attr );
+#endif
+ return a;
}
-
matches[0].rm_so = matches[0].rm_eo = -1;
}
- Debug( LDAP_DEBUG_ACL, "<= acl_get: no match\n", 0, 0, 0 );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_ENTRY,
+ "acl_get: done.\n" ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
+#endif
return( NULL );
}
+
/*
- * acl_access_allowed - check whether the given acl allows dn the
+ * 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).
*
* 1 access allowed
*/
-int
-acl_access_allowed(
- struct acl *a,
+static slap_control_t
+acl_mask(
+ AccessControl *a,
+ slap_mask_t *mask,
Backend *be,
- Connection *conn,
+ Connection *conn,
+ Operation *op,
Entry *e,
+ AttributeDescription *desc,
struct berval *val,
- Operation *op,
- int access,
- char *edn,
regmatch_t *matches
)
{
- int i;
- struct access *b;
- Attribute *at;
- struct berval bv;
- int default_access;
-
+ int i, odnlen, patlen;
+ Access *b;
+#ifdef LDAP_DEBUG
+ char accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif
+ const char *attr;
+
+ assert( a != NULL );
+ assert( mask != NULL );
+ assert( desc != NULL );
+
+ attr = desc->ad_cname->bv_val;
+
+ assert( attr != NULL );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_ENTRY,
+ "acl_mask: conn %d access to entry \"%s\", attr \"%s\" requested\n",
+ conn->c_connid, e->e_dn, attr ));
+
+ LDAP_LOG(( "acl", LDAP_LEVEL_ARGS,
+ " to %s by \"%s\", (%s) \n",
+ val ? "value" : "all values",
+ op->o_ndn ? op->o_ndn : "",
+ accessmask2str( *mask, accessmaskbuf ) ));
+#else
Debug( LDAP_DEBUG_ACL,
- "\n=> acl_access_allowed: %s access to entry \"%s\"\n",
- access2str( access ), e->e_dn, 0 );
+ "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
+ e->e_dn, attr, 0 );
Debug( LDAP_DEBUG_ACL,
- "\n=> acl_access_allowed: %s access to value \"%s\" by \"%s\"\n",
- access2str( access ),
- val ? val->bv_val : "any",
- op->o_ndn ? op->o_ndn : "" );
-
- if ( be_isroot( be, op->o_ndn ) ) {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: granted to database root\n",
- 0, 0, 0 );
- return( 1 );
- }
-
- default_access = be->be_dfltaccess ? be->be_dfltaccess : global_default_access;
-
- if ( a == NULL ) {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: %s by default (no matching to)\n",
- default_access >= access ? "granted" : "denied", 0, 0 );
- return( default_access >= access );
- }
-
- if ( op->o_ndn != NULL ) {
- bv.bv_val = op->o_ndn;
- bv.bv_len = strlen( bv.bv_val );
- }
+ "=> acl_mask: to %s by \"%s\", (%s) \n",
+ val ? "value" : "all values",
+ op->o_ndn ? op->o_ndn : "",
+ accessmask2str( *mask, accessmaskbuf ) );
+#endif
for ( i = 1, b = a->acl_access; b != NULL; b = b->a_next, i++ ) {
- if ( b->a_dnpat != NULL ) {
- Debug( LDAP_DEBUG_TRACE, "<= check a_dnpat: %s\n",
- b->a_dnpat, 0, 0);
+ slap_mask_t oldmask, modmask;
+
+ ACL_INVALIDATE( modmask );
+
+ /* AND <who> clauses */
+ if ( b->a_dn_pat != NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_dn_pat: %s\n",
+ conn->c_connid, b->a_dn_pat ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
+ b->a_dn_pat, 0, 0);
+#endif
/*
* 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
*/
- if ( strcasecmp( b->a_dnpat, "anonymous" ) == 0 &&
- (op->o_ndn == NULL || *(op->o_ndn) == '\0' ) )
- {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
+ if ( strcmp( b->a_dn_pat, "anonymous" ) == 0 ) {
+ if (op->o_ndn != NULL && op->o_ndn[0] != '\0' ) {
+ continue;
+ }
- return ACL_GRANT(b->a_access, access );
+ } else if ( strcmp( b->a_dn_pat, "users" ) == 0 ) {
+ if (op->o_ndn == NULL || op->o_ndn[0] == '\0' ) {
+ continue;
+ }
- } else if ( strcasecmp( b->a_dnpat, "self" ) == 0 &&
- op->o_ndn != NULL && *(op->o_ndn) && e->e_dn != NULL )
- {
- if ( strcmp( edn, op->o_ndn ) == 0 ) {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
+ } else if ( strcmp( b->a_dn_pat, "self" ) == 0 ) {
+ if( op->o_ndn == NULL || op->o_ndn[0] == '\0' ) {
+ continue;
+ }
+
+ if ( e->e_dn == NULL || strcmp( e->e_ndn, op->o_ndn ) != 0 ) {
+ continue;
+ }
- return ACL_GRANT(b->a_access, access );
+ } else if ( b->a_dn_style == ACL_STYLE_REGEX ) {
+ if ( strcmp( b->a_dn_pat, "*" ) != 0 ) {
+ int ret = regex_matches( b->a_dn_pat,
+ op->o_ndn, e->e_ndn, matches );
+
+ if( ret == 0 ) {
+ continue;
+ }
}
+
} else {
- if ( regex_matches( b->a_dnpat, op->o_ndn, edn, matches ) ) {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
+ if ( e->e_dn == NULL )
+ continue;
- return ACL_GRANT(b->a_access, access );
+ patlen = strlen( b->a_dn_pat );
+ odnlen = strlen( op->o_ndn );
+ if ( odnlen < patlen )
+ continue;
+
+ if ( b->a_dn_style == ACL_STYLE_BASE ) {
+ /* base dn -- entire object DN must match */
+ if ( odnlen != patlen )
+ continue;
+
+ } else if ( b->a_dn_style == ACL_STYLE_ONE ) {
+ char *rdn;
+ int rdnlen = -1;
+
+ if ( odnlen <= patlen )
+ continue;
+
+ if ( op->o_ndn[odnlen - patlen - 1] != ',' )
+ continue;
+
+ rdn = dn_rdn( NULL, op->o_ndn );
+ if ( rdn != NULL ) {
+ rdnlen = strlen( rdn );
+ ch_free( rdn );
+ }
+ if ( rdnlen != odnlen - patlen - 1 )
+ continue;
+
+ } else if ( b->a_dn_style == ACL_STYLE_SUBTREE ) {
+ if ( odnlen > patlen && op->o_ndn[odnlen - patlen - 1] != ',' )
+ continue;
+
+ } else if ( b->a_dn_style == ACL_STYLE_CHILDREN ) {
+ if ( odnlen <= patlen )
+ continue;
+ if ( op->o_ndn[odnlen - patlen - 1] != ',' )
+ continue;
}
+
+ if ( strcmp( b->a_dn_pat, op->o_ndn + odnlen - patlen ) != 0 )
+ continue;
+
}
}
- if ( b->a_addrpat != NULL ) {
- if ( regex_matches( b->a_addrpat, conn->c_client_addr,
- edn, matches ) )
- {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
- return ACL_GRANT(b->a_access, access );
+ if ( b->a_sockurl_pat != NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_sockurl_pat: %s\n",
+ conn->c_connid, b->a_sockurl_pat ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
+ b->a_sockurl_pat, 0, 0 );
+#endif
+
+ if ( strcmp( b->a_sockurl_pat, "*" ) != 0) {
+ if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
+ if (!regex_matches( b->a_sockurl_pat, conn->c_listener_url,
+ e->e_ndn, matches ) )
+ {
+ continue;
+ }
+ } else {
+ if ( strcasecmp( b->a_sockurl_pat, conn->c_listener_url ) == 0 )
+ continue;
+ }
}
}
- if ( b->a_domainpat != NULL ) {
- Debug( LDAP_DEBUG_ARGS, "<= check a_domainpath: %s\n",
- b->a_domainpat, 0, 0 );
- if ( regex_matches( b->a_domainpat, conn->c_client_name,
- edn, matches ) )
- {
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
- return ACL_GRANT(b->a_access, access );
+ if ( b->a_domain_pat != NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_domain_pat: %s\n",
+ conn->c_connid, b->a_domain_pat ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
+ b->a_domain_pat, 0, 0 );
+#endif
+ if ( strcmp( b->a_domain_pat, "*" ) != 0) {
+ if ( b->a_domain_style == ACL_STYLE_REGEX) {
+ if (!regex_matches( b->a_domain_pat, conn->c_peer_domain,
+ e->e_ndn, matches ) )
+ {
+ continue;
+ }
+ } else {
+ if ( strcasecmp( b->a_domain_pat, conn->c_peer_domain ) == 0 )
+ continue;
+ }
}
}
- if ( b->a_dnattr != NULL && op->o_ndn != NULL ) {
- Debug( LDAP_DEBUG_ARGS, "<= check a_dnattr: %s\n",
- b->a_dnattr, 0, 0);
- /* see if asker is listed in dnattr */
- if ( (at = attr_find( e->e_attrs, b->a_dnattr )) != NULL &&
- value_find( at->a_vals, &bv, at->a_syntax, 3 ) == 0 )
- {
- if ( ACL_IS_SELF(b->a_access) &&
- (val == NULL || value_cmp( &bv, val, at->a_syntax, 2 )) )
- {
- continue;
- }
- Debug( LDAP_DEBUG_ACL,
- "<= acl_acces_allowed: matched by clause #%d access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
+ if ( b->a_peername_pat != NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_perrname_path: %s\n",
+ conn->c_connid, b->a_peername_pat ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
+ b->a_peername_pat, 0, 0 );
+#endif
+ if ( strcmp( b->a_peername_pat, "*" ) != 0) {
+ if ( b->a_peername_style == ACL_STYLE_REGEX) {
+ if (!regex_matches( b->a_peername_pat, conn->c_peer_name,
+ e->e_ndn, matches ) )
+ {
+ continue;
+ }
+ } else {
+ if ( strcasecmp( b->a_peername_pat, conn->c_peer_name ) == 0 )
+ continue;
+ }
+ }
+ }
- return ACL_GRANT(b->a_access, access );
+ if ( b->a_sockname_pat != NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_sockname_path: %s\n",
+ conn->c_connid, b->a_sockname_pat ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
+ b->a_sockname_pat, 0, 0 );
+#endif
+ if ( strcmp( b->a_sockname_pat, "*" ) != 0) {
+ if ( b->a_sockname_style == ACL_STYLE_REGEX) {
+ if (!regex_matches( b->a_sockname_pat, conn->c_sock_name,
+ e->e_ndn, matches ) )
+ {
+ continue;
+ }
+ } else {
+ if ( strcasecmp( b->a_sockname_pat, conn->c_sock_name ) == 0 )
+ continue;
+ }
}
+ }
+
+ if ( b->a_dn_at != NULL && op->o_ndn != NULL ) {
+ Attribute *at;
+ struct berval bv;
+ int rc, match = 0;
+ const char *text;
+ const char *attr = b->a_dn_at->ad_cname->bv_val;
+
+ assert( attr != NULL );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_dn_pat: %s\n",
+ conn->c_connid, attr ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n",
+ attr, 0, 0);
+#endif
+ bv.bv_val = op->o_ndn;
+ bv.bv_len = strlen( bv.bv_val );
- /* asker not listed in dnattr - check for self access */
- if ( ! ACL_IS_SELF(b->a_access) || val == NULL ||
- value_cmp( &bv, val, at->a_syntax, 2 ) != 0 )
+ /* see if asker is listed in dnattr */
+ for( at = attrs_find( e->e_attrs, b->a_dn_at );
+ at != NULL;
+ at = attrs_find( at->a_next, b->a_dn_at ) )
{
- continue;
+ if( value_find( b->a_dn_at, at->a_vals, &bv ) == 0 ) {
+ /* found it */
+ match = 1;
+ break;
+ }
}
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d (self) access %s\n",
- i, ACL_GRANT(b->a_access, access)
- ? "granted" : "denied", 0 );
-
- return ACL_GRANT(b->a_access, access );
+ if( match ) {
+ /* have a dnattr match. if this is a self clause then
+ * the target must also match the op dn.
+ */
+ if ( b->a_dn_self ) {
+ /* check if the target is an attribute. */
+ if ( val == NULL )
+ continue;
+ /* target is attribute, check if the attribute value
+ * is the op dn.
+ */
+ rc = value_match( &match, b->a_dn_at,
+ b->a_dn_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 )
+ continue;
+ }
+ } else {
+ /* no dnattr match, check if this is a self clause */
+ if ( ! b->a_dn_self )
+ continue;
+ /* this is a self clause, check if the target is an
+ * attribute.
+ */
+ if ( val == NULL )
+ continue;
+ /* target is attribute, check if the attribute value
+ * is the op dn.
+ */
+ rc = value_match( &match, b->a_dn_at,
+ b->a_dn_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 )
+ continue;
+ }
}
- if ( b->a_group != NULL && op->o_ndn != NULL ) {
+ if ( b->a_group_pat != NULL && op->o_ndn != NULL ) {
char buf[1024];
/* b->a_group is an unexpanded entry name, expanded it should be an
* the values in the attribute group
*/
/* see if asker is listed in dnattr */
- string_expand(buf, sizeof(buf), b->a_group, edn, matches);
- (void) dn_normalize_case(buf);
+ if ( b->a_group_style == ACL_STYLE_REGEX ) {
+ string_expand(buf, sizeof(buf), b->a_group_pat, e->e_ndn, matches);
+ if ( dn_normalize(buf) == NULL ) {
+ /* did not expand to a valid dn */
+ continue;
+ }
+ } else {
+ strncpy( buf, b->a_group_pat, sizeof(buf) - 1 );
+ buf[sizeof(buf) - 1] = 0;
+ }
- if (backend_group(be, e, buf, op->o_ndn,
- b->a_group_oc, b->a_group_at) == 0)
+ if (backend_group(be, conn, op, e, buf, op->o_ndn,
+ b->a_group_oc, b->a_group_at) != 0)
{
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: matched by clause #%d (group) access granted\n",
- i, 0, 0 );
- return ACL_GRANT(b->a_access, access );
+ continue;
+ }
+ }
+
+ if ( b->a_set_pat != NULL ) {
+ struct berval bv;
+
+ bv.bv_val = b->a_set_pat;
+ bv.bv_len = strlen(b->a_set_pat);
+ if (aci_match_set( &bv, be, e, conn, op, 0 ) == 0) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_ssf ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_authz.sai_ssf: ACL %u > OP %u\n",
+ conn->c_connid, b->a_authz.sai_ssf, op->o_ssf ));
+#else
+ Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
+ b->a_authz.sai_ssf, op->o_ssf, 0 );
+#endif
+ if ( b->a_authz.sai_ssf > op->o_ssf ) {
+ continue;
}
}
+
+ if ( b->a_authz.sai_transport_ssf ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
+ conn->c_connid, b->a_authz.sai_transport_ssf, op->o_transport_ssf ));
+#else
+ 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 );
+#endif
+ if ( b->a_authz.sai_transport_ssf > op->o_transport_ssf ) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_tls_ssf ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
+ conn->c_connid, b->a_authz.sai_tls_ssf, op->o_tls_ssf ));
+#else
+ 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 );
+#endif
+ if ( b->a_authz.sai_tls_ssf > op->o_tls_ssf ) {
+ continue;
+ }
+ }
+
+ if ( b->a_authz.sai_sasl_ssf ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
+ conn->c_connid, b->a_authz.sai_sasl_ssf, op->o_sasl_ssf ));
+#else
+ 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 );
+#endif
+ if ( b->a_authz.sai_sasl_ssf > op->o_sasl_ssf ) {
+ continue;
+ }
+ }
+
+#ifdef SLAPD_ACI_ENABLED
+ if ( b->a_aci_at != NULL ) {
+ Attribute *at;
+ slap_access_t grant, deny, tgrant, tdeny;
+
+ /* this case works different from the others above.
+ * since aci's themselves give permissions, we need
+ * to first check b->a_access_mask, the ACL's access level.
+ */
+
+ if( op->o_ndn == NULL || op->o_ndn[0] == '\0' ) {
+ continue;
+ }
+
+ if ( e->e_dn == NULL ) {
+ continue;
+ }
+
+ /* first check if the right being requested
+ * is allowed by the ACL clause.
+ */
+ if ( ! ACL_GRANT( b->a_access_mask, *mask ) ) {
+ continue;
+ }
+
+ /* get the aci attribute */
+ at = attr_find( e->e_attrs, b->a_aci_at );
+ if ( at == NULL ) {
+ continue;
+ }
+
+ /* start out with nothing granted, nothing denied */
+ ACL_INIT(tgrant);
+ ACL_INIT(tdeny);
+
+ /* the aci is an multi-valued attribute. The
+ * rights are determined by OR'ing the individual
+ * rights given by the acis.
+ */
+ for ( i = 0; at->a_vals[i] != NULL; i++ ) {
+ if (aci_mask( be, conn, op,
+ e, desc, val, at->a_vals[i],
+ matches, &grant, &deny ) != 0)
+ {
+ 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 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
+ {
+ modmask = b->a_access_mask;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_RESULTS,
+ "acl_mask: conn %d [%d] applying %s (%s)\n",
+ conn->c_connid, i, accessmask2str( modmask, accessmaskbuf),
+ b->a_type == ACL_CONTINUE ? "continue" : b->a_type == ACL_BREAK
+ ? "break" : "stop" ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_mask: [%d] applying %s (%s)\n",
+ i, accessmask2str( modmask, accessmaskbuf ),
+ b->a_type == ACL_CONTINUE
+ ? "continue"
+ : b->a_type == ACL_BREAK
+ ? "break"
+ : "stop" );
+#endif
+ /* 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;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL1,
+ "acl_mask: conn %d [%d] mask: %s\n",
+ conn->c_connid, i, accessmask2str( *mask, accessmaskbuf) ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_mask: [%d] mask: %s\n",
+ i, accessmask2str(*mask, accessmaskbuf), 0 );
+#endif
+
+ if( b->a_type == ACL_CONTINUE ) {
+ continue;
+
+ } else if ( b->a_type == ACL_BREAK ) {
+ return ACL_BREAK;
+
+ } else {
+ return ACL_STOP;
+ }
}
- Debug( LDAP_DEBUG_ACL,
- "<= acl_access_allowed: %s by default (no matching by)\n",
- default_access >= access ? "granted" : "denied", 0, 0 );
+ /* implicit "by * none" clause */
+ ACL_INIT(*mask);
- return( default_access >= access );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_RESULTS,
+ "acl_mask: conn %d no more <who> clauses, returning %d (stop)\n",
+ conn->c_connid, accessmask2str( *mask, accessmaskbuf) ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
+ accessmask2str(*mask, accessmaskbuf), 0, 0 );
+#endif
+ 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 LDAP_SUCCESS mods allowed ok
- * anything else mods not allowed - return is an error
- * code indicating the problem
+ * returns 1 if mods allowed ok
+ * 0 mods not allowed
*/
int
Connection *conn,
Operation *op,
Entry *e,
- LDAPModList *mlist
+ Modifications *mlist
)
{
int i;
- struct acl *a;
- char *edn = e->e_ndn;
- for ( ; mlist != NULL; mlist = mlist->ml_next ) {
- regmatch_t matches[MAXREMATCHES];
+ assert( be != NULL );
+
+ /* short circuit root database access */
+ if ( be_isroot( be, op->o_ndn ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "acl", LDAP_LEVEL_DETAIL1,
+ "acl_check_modlist: conn %d access granted to root user\n",
+ conn->c_connid ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_access_allowed: granted to database root\n",
+ 0, 0, 0 );
+#endif
+ return 1;
+ }
+
+ /* use backend default access if no backend acls */
+ if( be != NULL && be->be_acl == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL1,
+ "acl_check_modlist: conn %d backend default %s access %s to \"%s\"\n",
+ conn->c_connid, access2str( ACL_WRITE ),
+ be->be_dfltaccess >= ACL_WRITE ? "granted" : "denied", op->o_dn ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: backend default %s access %s to \"%s\"\n",
+ access2str( ACL_WRITE ),
+ be->be_dfltaccess >= ACL_WRITE ? "granted" : "denied", op->o_dn );
+#endif
+ return be->be_dfltaccess >= ACL_WRITE;
+
+#ifdef notdef
+ /* be is always non-NULL */
+ /* use global default access if no global acls */
+ } else if ( be == NULL && global_acl == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL1,
+ "acl_check_modlist: conn %d global default %s access %s to \"%s\"\n",
+ conn->c_connid, access2str( ACL_WRITE ),
+ global_default_access >= ACL_WRITE ? "granted" : "denied", op->o_dn ));
+#else
+ Debug( LDAP_DEBUG_ACL,
+ "=> access_allowed: global default %s access %s to \"%s\"\n",
+ access2str( ACL_WRITE ),
+ global_default_access >= ACL_WRITE ? "granted" : "denied", op->o_dn );
+#endif
+ return global_default_access >= ACL_WRITE;
+#endif
+ }
- /* the lastmod attributes are ignored by ACL checking */
- if ( oc_check_no_usermod_attr( mlist->ml_type ) ) {
- Debug( LDAP_DEBUG_ACL, "Operational attribute: %s access allowed\n",
- mlist->ml_type, 0, 0 );
+ for ( ; mlist != NULL; mlist = mlist->sml_next ) {
+ /*
+ * 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 ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL1,
+ "acl_check_modlist: conn %d no-user-mod %s: modify access granted\n",
+ conn->c_connid, mlist->sml_desc->ad_cname->bv_val ));
+#else
+ Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
+ " modify access granted\n",
+ mlist->sml_desc->ad_cname->bv_val, 0, 0 );
+#endif
continue;
}
- a = acl_get_applicable( be, op, e, mlist->ml_type,
- MAXREMATCHES, matches );
-
- switch ( mlist->ml_op & ~LDAP_MOD_BVALUES ) {
+ switch ( mlist->sml_op ) {
case LDAP_MOD_REPLACE:
case LDAP_MOD_ADD:
- if ( mlist->ml_bvalues == NULL ) {
+ if ( mlist->sml_bvalues == NULL ) {
break;
}
- for ( i = 0; mlist->ml_bvalues[i] != NULL; i++ ) {
- if ( ! acl_access_allowed( a, be, conn, e, mlist->ml_bvalues[i],
- op, ACL_WRITE, edn, matches) )
+ for ( i = 0; mlist->sml_bvalues[i] != NULL; i++ ) {
+ if ( ! access_allowed( be, conn, op, e,
+ mlist->sml_desc, mlist->sml_bvalues[i], ACL_WRITE ) )
{
- return( LDAP_INSUFFICIENT_ACCESS );
+ return( 0 );
}
}
break;
case LDAP_MOD_DELETE:
- if ( mlist->ml_bvalues == NULL ) {
- if ( ! acl_access_allowed( a, be, conn, e,
- NULL, op, ACL_WRITE, edn, matches) )
+ if ( mlist->sml_bvalues == NULL ) {
+ if ( ! access_allowed( be, conn, op, e,
+ mlist->sml_desc, NULL, ACL_WRITE ) )
{
- return( LDAP_INSUFFICIENT_ACCESS );
+ return( 0 );
}
break;
}
- for ( i = 0; mlist->ml_bvalues[i] != NULL; i++ ) {
- if ( ! acl_access_allowed( a, be, conn, e, mlist->ml_bvalues[i],
- op, ACL_WRITE, edn, matches) )
+ for ( i = 0; mlist->sml_bvalues[i] != NULL; i++ ) {
+ if ( ! access_allowed( be, conn, op, e,
+ mlist->sml_desc, mlist->sml_bvalues[i], ACL_WRITE ) )
{
- return( LDAP_INSUFFICIENT_ACCESS );
+ return( 0 );
+ }
+ }
+ break;
+ }
+ }
+
+ return( 1 );
+}
+
+static char *
+aci_bvstrdup( struct berval *bv )
+{
+ char *s;
+
+ s = (char *)ch_malloc(bv->bv_len + 1);
+ if (s != NULL) {
+ AC_MEMCPY(s, bv->bv_val, bv->bv_len);
+ s[bv->bv_len] = 0;
+ }
+ return(s);
+}
+
+static int
+aci_strbvcmp(
+ const char *s,
+ struct berval *bv )
+{
+ int res, len;
+
+ res = strncasecmp( s, bv->bv_val, bv->bv_len );
+ if (res)
+ return(res);
+ len = strlen(s);
+ if (len > (int)bv->bv_len)
+ return(1);
+ if (len < (int)bv->bv_len)
+ return(-1);
+ return(0);
+}
+
+static int
+aci_get_part(
+ struct berval *list,
+ int ix,
+ char sep,
+ struct berval *bv )
+{
+ int len;
+ char *p;
+
+ if (bv) {
+ bv->bv_len = 0;
+ bv->bv_val = NULL;
+ }
+ 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);
+}
+
+char **
+aci_set_gather (void *cookie, char *name, char *attr)
+{
+ struct {
+ Backend *be;
+ Entry *e;
+ Connection *conn;
+ Operation *op;
+ } *cp = (void *)cookie;
+ struct berval **bvals = NULL;
+ char **vals = NULL;
+ char *ndn;
+ int i;
+
+ /* 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 ((ndn = ch_strdup(name)) != NULL) {
+ if (dn_normalize(ndn) != NULL) {
+ const char *text;
+ AttributeDescription *desc = NULL;
+ if (slap_str2ad(attr, &desc, &text) == LDAP_SUCCESS) {
+ backend_attribute(cp->be, NULL /*cp->conn*/,
+ NULL /*cp->op*/, cp->e,
+ ndn, desc, &bvals);
+ if (bvals != NULL) {
+ for (i = 0; bvals[i] != NULL; i++) { }
+ vals = ch_calloc(i + 1, sizeof(char *));
+ if (vals != NULL) {
+ while (--i >= 0) {
+ vals[i] = bvals[i]->bv_val;
+ bvals[i]->bv_val = NULL;
+ }
+ }
+ ber_bvecfree(bvals);
+ }
+ ad_free(desc, 1);
+ }
+ }
+ ch_free(ndn);
+ }
+ return(vals);
+}
+
+static int
+aci_match_set (
+ struct berval *subj,
+ Backend *be,
+ Entry *e,
+ Connection *conn,
+ Operation *op,
+ int setref
+)
+{
+ char *set = NULL;
+ int rc = 0;
+ struct {
+ Backend *be;
+ Entry *e;
+ Connection *conn;
+ Operation *op;
+ } cookie;
+
+ if (setref == 0) {
+ set = aci_bvstrdup(subj);
+ } else {
+ struct berval bv;
+ char *subjdn;
+ char *setat;
+ struct berval **bvals;
+ const char *text;
+ AttributeDescription *desc = NULL;
+
+ /* format of string is "entry/setAttrName" */
+ if (aci_get_part(subj, 0, '/', &bv) < 0) {
+ return(0);
+ }
+
+ subjdn = aci_bvstrdup(&bv);
+ if ( subjdn == NULL ) {
+ return(0);
+ }
+
+ if ( aci_get_part(subj, 1, '/', &bv) < 0 ) {
+ setat = ch_strdup( SLAPD_ACI_SET_ATTR );
+ } else {
+ setat = aci_bvstrdup(&bv);
+ }
+ if ( setat != NULL ) {
+ if ( dn_normalize(subjdn) != NULL
+ && slap_str2ad(setat, &desc, &text) == LDAP_SUCCESS )
+ {
+ backend_attribute(be, NULL, NULL, e,
+ subjdn, desc, &bvals);
+ ad_free(desc, 1);
+ if ( bvals != NULL ) {
+ if ( bvals[0] != NULL )
+ set = ch_strdup(bvals[0]->bv_val);
+ ber_bvecfree(bvals);
}
}
+ ch_free(setat);
+ }
+ ch_free(subjdn);
+ }
+
+ if (set != NULL) {
+ cookie.be = be;
+ cookie.e = e;
+ cookie.conn = conn;
+ cookie.op = op;
+ rc = (set_filter(aci_set_gather, &cookie, set, op->o_ndn, e->e_ndn, NULL) > 0);
+ ch_free(set);
+ }
+ return(rc);
+}
+
+#ifdef SLAPD_ACI_ENABLED
+static int
+aci_list_map_rights(
+ struct berval *list )
+{
+ struct berval bv;
+ slap_access_t mask;
+ int i;
+
+ ACL_INIT(mask);
+ for (i = 0; aci_get_part(list, i, ',', &bv) >= 0; i++) {
+ if (bv.bv_len <= 0)
+ continue;
+ switch (*bv.bv_val) {
+ case 'c':
+ ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
+ break;
+ case 's':
+ /* **** NOTE: draft-ietf-ldapext-aci-model-0.3.txt defines
+ * the right 's' to mean "set", but in the examples states
+ * that the right 's' means "search". The latter definition
+ * is used here.
+ */
+ ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
+ break;
+ case 'r':
+ ACL_PRIV_SET(mask, ACL_PRIV_READ);
+ break;
+ case 'w':
+ ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
+ break;
+ case 'x':
+ /* **** NOTE: draft-ietf-ldapext-aci-model-0.3.txt does not
+ * define any equivalent to the AUTH right, so I've just used
+ * 'x' for now.
+ */
+ ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
+ break;
+ default:
break;
}
+
+ }
+ return(mask);
+}
+
+static int
+aci_list_has_attr(
+ struct berval *list,
+ const char *attr,
+ struct berval *val )
+{
+ struct berval bv, left, right;
+ int i;
+
+ for (i = 0; aci_get_part(list, i, ',', &bv) >= 0; i++) {
+ if (aci_get_part(&bv, 0, '=', &left) < 0
+ || aci_get_part(&bv, 1, '=', &right) < 0)
+ {
+ if (aci_strbvcmp(attr, &bv) == 0)
+ return(1);
+ } else if (val == NULL) {
+ if (aci_strbvcmp(attr, &left) == 0)
+ return(1);
+ } else {
+ if (aci_strbvcmp(attr, &left) == 0) {
+ /* this is experimental code that implements a
+ * simple (prefix) match of the attribute value.
+ * the ACI draft does not provide for aci's that
+ * apply to specific values, but it would be
+ * nice to have. If the <attr> part of an aci's
+ * rights list is of the form <attr>=<value>,
+ * that means the aci applies only to attrs with
+ * the given value. Furthermore, if the attr is
+ * of the form <attr>=<value>*, then <value> is
+ * treated as a prefix, and the aci applies to
+ * any value with that prefix.
+ *
+ * Ideally, this would allow r.e. matches.
+ */
+ if (aci_get_part(&right, 0, '*', &left) < 0
+ || right.bv_len <= left.bv_len)
+ {
+ if (aci_strbvcmp(val->bv_val, &right) == 0)
+ return(1);
+ } else if (val->bv_len >= left.bv_len) {
+ if (strncasecmp( val->bv_val, left.bv_val, left.bv_len ) == 0)
+ return(1);
+ }
+ }
+ }
+ }
+ return(0);
+}
+
+static slap_access_t
+aci_list_get_attr_rights(
+ struct berval *list,
+ const char *attr,
+ struct berval *val )
+{
+ struct berval bv;
+ slap_access_t mask;
+ int i;
+
+ /* loop through each rights/attr pair, skip first part (action) */
+ ACL_INIT(mask);
+ for (i = 1; aci_get_part(list, i + 1, ';', &bv) >= 0; i += 2) {
+ if (aci_list_has_attr(&bv, attr, val) == 0)
+ continue;
+ if (aci_get_part(list, i, ';', &bv) < 0)
+ continue;
+ mask |= aci_list_map_rights(&bv);
+ }
+ return(mask);
+}
+
+static int
+aci_list_get_rights(
+ struct berval *list,
+ const char *attr,
+ struct berval *val,
+ slap_access_t *grant,
+ slap_access_t *deny )
+{
+ struct berval perm, actn;
+ slap_access_t *mask;
+ int i, found;
+
+ if (attr == NULL || *attr == 0 || strcasecmp(attr, "entry") == 0) {
+ attr = "[entry]";
+ }
+
+ found = 0;
+ ACL_INIT(*grant);
+ ACL_INIT(*deny);
+ /* loop through each permissions clause */
+ for (i = 0; aci_get_part(list, i, '$', &perm) >= 0; i++) {
+ if (aci_get_part(&perm, 0, ';', &actn) < 0)
+ continue;
+ if (aci_strbvcmp( "grant", &actn ) == 0) {
+ mask = grant;
+ } else if (aci_strbvcmp( "deny", &actn ) == 0) {
+ mask = deny;
+ } else {
+ continue;
+ }
+
+ found = 1;
+ *mask |= aci_list_get_attr_rights(&perm, attr, val);
+ *mask |= aci_list_get_attr_rights(&perm, "[all]", NULL);
+ }
+ return(found);
+}
+
+static int
+aci_group_member (
+ struct berval *subj,
+ const char *defgrpoc,
+ const char *defgrpat,
+ Backend *be,
+ Entry *e,
+ Connection *conn,
+ Operation *op,
+ regmatch_t *matches
+)
+{
+ struct berval bv;
+ char *subjdn, *grpdn = NULL;
+ char *grpoc;
+ char *grpat;
+ ObjectClass *grp_oc = NULL;
+ AttributeDescription *grp_ad = NULL;
+ char *text;
+ int rc;
+
+ /* format of string is "group/objectClassValue/groupAttrName" */
+ if (aci_get_part(subj, 0, '/', &bv) < 0) {
+ return(0);
+ }
+
+ subjdn = aci_bvstrdup(&bv);
+ if (subjdn == NULL) {
+ return(0);
+ }
+
+ if (aci_get_part(subj, 1, '/', &bv) < 0) {
+ grpoc = ch_strdup( defgrpoc );
+ } else {
+ grpoc = aci_bvstrdup(&bv);
+ }
+
+ if (aci_get_part(subj, 2, '/', &bv) < 0) {
+ grpat = ch_strdup( defgrpat );
+ } else {
+ grpat = aci_bvstrdup(&bv);
+ }
+
+ rc = slap_str2ad( grpat, &grp_ad, &text );
+ if( rc != LDAP_SUCCESS ) {
+ rc = 0;
+ goto done;
+ }
+ rc = 0;
+
+ grp_oc = oc_find( grpoc );
+ grpdn = (char *)ch_malloc(1024);
+
+ if (grp_oc != NULL && grp_ad != NULL && grpdn != NULL) {
+ string_expand(grpdn, 1024, subjdn, e->e_ndn, matches);
+ if ( dn_normalize(grpdn) != NULL ) {
+ rc = (backend_group(be, conn, op, e, grpdn, op->o_ndn, grp_oc, grp_ad) == 0);
+ }
+ }
+
+done:
+ if( grp_ad != NULL ) ad_free( grp_ad, 1 );
+ ch_free(grpdn);
+ ch_free(grpat);
+ ch_free(grpoc);
+ ch_free(subjdn);
+ return(rc);
+}
+
+static int
+aci_mask(
+ Backend *be,
+ Connection *conn,
+ Operation *op,
+ Entry *e,
+ AttributeDescription *desc,
+ struct berval *val,
+ struct berval *aci,
+ regmatch_t *matches,
+ slap_access_t *grant,
+ slap_access_t *deny
+)
+{
+ struct berval bv, perms, sdn;
+ char *subjdn;
+ int rc;
+ char *attr = desc->ad_cname->bv_val;
+
+ assert( attr != NULL );
+
+ /* parse an aci of the form:
+ oid#scope#action;rights;attr;rights;attr$action;rights;attr;rights;attr#dnType#subjectDN
+
+ See draft-ietf-ldapext-aci-model-04.txt section 9.1 for
+ a full description of the format for this attribute.
+
+ For now, this routine only supports scope=entry.
+ */
+
+ /* check that the aci has all 5 components */
+ if (aci_get_part(aci, 4, '#', NULL) < 0)
+ return(0);
+
+ /* check that the aci family is supported */
+ if (aci_get_part(aci, 0, '#', &bv) < 0)
+ return(0);
+
+ /* check that the scope is "entry" */
+ if (aci_get_part(aci, 1, '#', &bv) < 0
+ || aci_strbvcmp( "entry", &bv ) != 0)
+ {
+ return(0);
+ }
+
+ /* get the list of permissions clauses, bail if empty */
+ if (aci_get_part(aci, 2, '#', &perms) <= 0)
+ return(0);
+
+ /* check if any permissions allow desired access */
+ if (aci_list_get_rights(&perms, attr, val, grant, deny) == 0)
+ return(0);
+
+ /* see if we have a DN match */
+ if (aci_get_part(aci, 3, '#', &bv) < 0)
+ return(0);
+
+ if (aci_get_part(aci, 4, '#', &sdn) < 0)
+ return(0);
+
+ if (aci_strbvcmp( "access-id", &bv ) == 0) {
+ subjdn = aci_bvstrdup(&sdn);
+ if (subjdn == NULL)
+ return(0);
+ rc = 1;
+ if ( dn_normalize(subjdn) != NULL )
+ if (strcasecmp(op->o_ndn, subjdn) != 0)
+ rc = 0;
+ ch_free(subjdn);
+ return(rc);
+ }
+
+ if (aci_strbvcmp( "self", &bv ) == 0) {
+ if (strcasecmp(op->o_ndn, e->e_ndn) == 0)
+ return(1);
+
+ } else if (aci_strbvcmp( "dnattr", &bv ) == 0) {
+ char *dnattr = aci_bvstrdup(&sdn);
+ Attribute *at;
+ AttributeDescription *ad = NULL;
+ const char *text;
+
+ rc = slap_str2ad( dnattr, &ad, &text );
+ ch_free( dnattr );
+
+ if( rc != LDAP_SUCCESS ) {
+ return 0;
+ }
+
+ rc = 0;
+
+ bv.bv_val = op->o_ndn;
+ bv.bv_len = strlen( bv.bv_val );
+
+ for(at = attrs_find( e->e_attrs, ad );
+ at != NULL;
+ at = attrs_find( at->a_next, ad ) )
+ {
+ if (value_find( ad, at->a_vals, &bv) == 0 ) {
+ rc = 1;
+ break;
+ }
+ }
+
+ ad_free( ad, 1 );
+ return rc;
+
+
+ } else if (aci_strbvcmp( "group", &bv ) == 0) {
+ if (aci_group_member(&sdn, SLAPD_GROUP_CLASS, SLAPD_GROUP_ATTR, be, e, conn, op, matches))
+ return(1);
+
+ } else if (aci_strbvcmp( "role", &bv ) == 0) {
+ if (aci_group_member(&sdn, SLAPD_ROLE_CLASS, SLAPD_ROLE_ATTR, be, e, conn, op, matches))
+ return(1);
+
+ } else if (aci_strbvcmp( "set", &bv ) == 0) {
+ if (aci_match_set(&sdn, be, e, conn, op, 0))
+ return(1);
+
+ } else if (aci_strbvcmp( "set-ref", &bv ) == 0) {
+ if (aci_match_set(&sdn, be, e, conn, op, 1))
+ return(1);
+
}
- return( LDAP_SUCCESS );
+ return(0);
}
+#endif /* SLAPD_ACI_ENABLED */
+
static void
string_expand(
char *newbuf,
char *match,
regmatch_t *matches)
{
- int size;
+ int size;
char *sp;
char *dp;
- int flag;
+ int flag;
size = 0;
newbuf[0] = '\0';
+ bufsiz--; /* leave space for lone $ */
flag = 0;
for ( dp = newbuf, sp = pat; size < bufsiz && *sp ; sp++) {
*dp++ = '$';
size++;
} else if (*sp >= '0' && *sp <= '9' ) {
- int n;
- int i;
- int l;
+ int n;
+ int i;
+ int l;
n = *sp - '0';
*dp = '\0';
}
}
}
+
+ if (flag) {
+ /* must have ended with a single $ */
+ *dp++ = '$';
+ size++;
+ }
+
*dp = '\0';
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL1,
+ "string_expand: pattern = %s\n", pat ));
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL1,
+ "string_expand: expanded = %s\n", newbuf ));
+#else
Debug( LDAP_DEBUG_TRACE, "=> string_expand: pattern: %s\n", pat, 0, 0 );
Debug( LDAP_DEBUG_TRACE, "=> string_expand: expanded: %s\n", newbuf, 0, 0 );
+#endif
}
static int
char error[512];
regerror(rc, &re, error, sizeof(error));
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_ERR,
+ "regex_matches: compile( \"%s\", \"%s\") failed %s\n",
+ pat, str, error ));
+#else
Debug( LDAP_DEBUG_TRACE,
"compile( \"%s\", \"%s\") failed %s\n",
pat, str, error );
+#endif
return( 0 );
}
rc = regexec(&re, str, 0, NULL, 0);
regfree( &re );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL2,
+ "regex_matches: string: %s\n", str ));
+ LDAP_LOG(( "aci", LDAP_LEVEL_DETAIL2,
+ "regex_matches: rc: %d %s\n",
+ rc, rc ? "matches" : "no matches" ));
+#else
Debug( LDAP_DEBUG_TRACE,
- "=> regex_matches: string: %s\n", str, 0, 0 );
+ "=> regex_matches: string: %s\n", str, 0, 0 );
Debug( LDAP_DEBUG_TRACE,
"=> regex_matches: rc: %d %s\n",
rc, !rc ? "matches" : "no matches", 0 );
+#endif
return( !rc );
}
projects / openldap / blobdiff