]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/acl.c
fix previous commit
[openldap] / servers / slapd / acl.c
index 3bcd3065c6a12a872b2fef38156fa1b2db76c748..e71d14fcca2ef5059df69accce86e1d2bcaa2b4a 100644 (file)
@@ -155,6 +155,340 @@ static int aci_match_set ( struct berval *subj, Operation *op,
  * - can be legally called with op->o_bd == NULL
  */
 
+#ifdef SLAP_OVERLAY_ACCESS
+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 );
+
+       ACL_PRIV_SET( *maskp, ACL_ACCESS2PRIV( access ) );
+
+       return 1;
+}
+
+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 = NULL;
+
+#ifdef LDAP_DEBUG
+       char                            accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif
+       slap_mask_t                     mask;
+       slap_control_t                  control;
+       slap_access_t                   access_level;
+       const char                      *attr;
+       regmatch_t                      matches[MAXREMATCHES];
+       int                             st_same_attr = 0;
+
+       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 );
+
+#ifdef LDAP_SLAPI
+       if ( op->o_pb != NULL ) {
+               ret = slapi_int_access_allowed( op, e, desc, val, access, state );
+               if ( ret == 0 ) {
+                       /* ACL plugin denied access */
+                       goto done;
+               }
+       }
+#endif /* LDAP_SLAPI */
+
+       /* 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
+        */
+       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 ) {
+               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 ( st_same_attr ) {
+               assert( state->as_vd_acl != NULL );
+
+               a = state->as_vd_acl;
+               count = state->as_vd_acl_count;
+               if ( !ACL_IS_INVALID( state->as_vd_acl_mask ) ) {
+                       mask = state->as_vd_acl_mask;
+                       AC_MEMCPY( matches, state->as_vd_acl_matches, sizeof(matches) );
+                       goto vd_access;
+               }
+
+       } else {
+               if ( state ) state->as_vi_acl = NULL;
+               a = NULL;
+               ACL_PRIV_ASSIGN( mask, *maskp );
+               count = 0;
+               memset( matches, '\0', sizeof( matches ) );
+       }
+
+       while ( ( a = acl_get( a, &count, op, e, desc, val,
+               MAXREMATCHES, matches, state ) ) != NULL )
+       {
+               int i;
+
+               for ( i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++ ) {
+                       Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
+                               (int)matches[i].rm_so, (int)matches[i].rm_eo );
+                       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_ACL, "%c", e->e_ndn[n], 0, 0 );
+                               }
+                       }
+                       Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
+               }
+
+               if ( state ) {
+                       if ( state->as_vi_acl == a &&
+                               ( state->as_recorded & ACL_STATE_RECORDED_NV ) )
+                       {
+                               Debug( LDAP_DEBUG_ACL,
+                                       "=> slap_access_allowed: result from state (%s)\n",
+                                       attr, 0, 0 );
+                               ret = state->as_result;
+                               goto done;
+                       } else {
+                               Debug( LDAP_DEBUG_ACL,
+                                       "=> slap_access_allowed: no res from state (%s)\n",
+                                       attr, 0, 0 );
+                       }
+               }
+
+vd_access:
+               control = acl_mask( a, &mask, op,
+                       e, desc, val, MAXREMATCHES, matches, count, state );
+
+               if ( control != ACL_BREAK ) {
+                       break;
+               }
+
+               memset( matches, '\0', sizeof( matches ) );
+       }
+
+       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
+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;
+       AccessControl                   *a = NULL;
+       int                             be_null = 0;
+
+#ifdef LDAP_DEBUG
+       char                            accessmaskbuf[ACCESSMASK_MAXLEN];
+#endif
+       slap_mask_t                     mask;
+       slap_control_t                  control;
+       slap_access_t                   access_level;
+       const char                      *attr;
+       int                             st_same_attr = 0;
+       static AccessControlState       state_init = ACL_STATE_INIT;
+       BI_access_allowed               *bi_access_allowed = NULL;
+
+       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 && op->o_is_auth_check &&
+               ( access_level == ACL_SEARCH || access_level == ACL_READ ) )
+       {
+               access = ACL_AUTH;
+       }
+
+       if ( state ) {
+               if ( state->as_vd_ad == desc ) {
+                       if ( state->as_recorded ) {
+                               if ( ( state->as_recorded & ACL_STATE_RECORDED_NV ) &&
+                                       val == NULL )
+                               {
+                                       return state->as_result;
+
+                               } else if ( ( state->as_recorded & ACL_STATE_RECORDED_VD ) &&
+                                       val != NULL && state->as_vd_acl == NULL )
+                               {
+                                       return state->as_result;
+                               }
+                       }
+                       st_same_attr = 1;
+               } else {
+                       *state = state_init;
+               }
+
+               state->as_vd_ad = desc;
+       }
+
+       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;
+
+#ifdef LDAP_DEVEL
+               /*
+                * FIXME: experimental; use first backend rules
+                * iff there is no global_acl (ITS#3100) */
+               if ( frontendDB->be_acl != NULL ) {
+                       op->o_bd = frontendDB;
+               }
+#endif /* LDAP_DEVEL */
+       }
+       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 */
+               ret = slap_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 if ( control == ACL_BREAK ) {
+                       Debug( LDAP_DEBUG_ACL,
+                               "=> access_allowed: no more rules\n", 0, 0, 0 );
+
+                       goto done;
+               }
+
+               ret = ACL_GRANT( mask, access );
+       }
+
+       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 ) {
+               /* If not value-dependent, save ACL in case of more attrs */
+               if ( !( state->as_recorded & ACL_STATE_RECORDED_VD ) ) {
+                       state->as_vi_acl = a;
+                       state->as_result = ret;
+               }
+               state->as_recorded |= ACL_STATE_RECORDED;
+       }
+       if ( be_null ) op->o_bd = NULL;
+       if ( maskp ) ACL_PRIV_ASSIGN( *maskp, mask );
+       return ret;
+}
+
+#else /* !SLAP_OVERLAY_ACCESS */
+
 int
 access_allowed_mask(
        Operation               *op,
@@ -194,20 +528,21 @@ access_allowed_mask(
 
        assert( attr != NULL );
 
-       if( op && op->o_is_auth_check &&
-               ( access_level == ACL_SEARCH || access_level == ACL_READ ))
+       if ( op && op->o_is_auth_check &&
+               ( access_level == ACL_SEARCH || access_level == ACL_READ ) )
        {
                access = ACL_AUTH;
        }
 
-       if( state ) {
-               if ( state->as_vd_ad==desc) {
+       if ( state ) {
+               if ( state->as_vd_ad == desc ) {
                        if ( state->as_recorded ) {
-                               if( state->as_recorded & ACL_STATE_RECORDED_NV &&
+                               if ( ( state->as_recorded & ACL_STATE_RECORDED_NV ) &&
                                        val == NULL )
                                {
                                        return state->as_result;
-                               } else if ( state->as_recorded & ACL_STATE_RECORDED_VD &&
+
+                               } else if ( ( state->as_recorded & ACL_STATE_RECORDED_VD ) &&
                                        val != NULL && state->as_vd_acl == NULL )
                                {
                                        return state->as_result;
@@ -223,7 +558,7 @@ access_allowed_mask(
 
        Debug( LDAP_DEBUG_ACL,
                "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
-           access2str( access ), e->e_dn, attr );
+               access2str( access ), e->e_dn, attr );
 
        if ( op == NULL ) {
                /* no-op call */
@@ -257,10 +592,8 @@ access_allowed_mask(
 #endif /* LDAP_SLAPI */
 
        /* grant database root access */
-       if ( /* be != NULL && */ be_isroot( op ) ) {
-               Debug( LDAP_DEBUG_ACL,
-                   "<= root access granted\n",
-                       0, 0, 0 );
+       if ( be_isroot( op ) ) {
+               Debug( LDAP_DEBUG_ACL, "<= root access granted\n", 0, 0, 0 );
                if ( maskp ) {
                        mask = ACL_LVL_MANAGE;
                }
@@ -284,9 +617,10 @@ access_allowed_mask(
        }
 
        /* use backend default access if no backend acls */
-       if ( /* be != NULL && */ be->be_acl == NULL ) {
+       if ( be->be_acl == NULL ) {
                Debug( LDAP_DEBUG_ACL,
-                       "=> access_allowed: backend default %s access %s to \"%s\"\n",
+                       "=> access_allowed: backend default %s "
+                       "access %s to \"%s\"\n",
                        access2str( access ),
                        be->be_dfltaccess >= access_level ? "granted" : "denied",
                        op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
@@ -310,7 +644,8 @@ access_allowed_mask(
                Debug( LDAP_DEBUG_ACL,
                        "=> access_allowed: global default %s access %s to \"%s\"\n",
                        access2str( access ),
-                       frontendDB->be_dfltaccess >= access_level ? "granted" : "denied", op->o_dn.bv_val );
+                       frontendDB->be_dfltaccess >= access_level ?
+                               "granted" : "denied", op->o_dn.bv_val );
                ret = frontendDB->be_dfltaccess >= access_level;
 
                if ( maskp ) {
@@ -329,12 +664,12 @@ access_allowed_mask(
        ret = 0;
        control = ACL_BREAK;
 
-       if( st_same_attr ) {
+       if ( st_same_attr ) {
                assert( state->as_vd_acl != NULL );
 
                a = state->as_vd_acl;
                count = state->as_vd_acl_count;
-               if ( !ACL_IS_INVALID( state->as_vd_acl_mask )) {
+               if ( !ACL_IS_INVALID( state->as_vd_acl_mask ) ) {
                        mask = state->as_vd_acl_mask;
                        AC_MEMCPY( matches, state->as_vd_acl_matches, sizeof(matches) );
                        goto vd_access;
@@ -345,33 +680,39 @@ access_allowed_mask(
                a = NULL;
                ACL_INIT(mask);
                count = 0;
-               memset(matches, '\0', sizeof(matches));
+               memset( matches, '\0', sizeof(matches) );
        }
 
-       while((a = acl_get( a, &count, op, e, desc, val,
-               MAXREMATCHES, matches, state )) != NULL)
+       while ( ( a = acl_get( a, &count, op, e, desc, val,
+               MAXREMATCHES, matches, state ) ) != NULL )
        {
                int i;
 
-               for (i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++) {
+               for ( i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++ ) {
                        Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
-                           (int)matches[i].rm_so, (int)matches[i].rm_eo );
-                       if( matches[i].rm_so <= matches[0].rm_eo ) {
+                               (int)matches[i].rm_so, (int)matches[i].rm_eo );
+                       if ( matches[i].rm_so <= matches[0].rm_eo ) {
                                int n;
-                               for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++) {
+                               for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++ ) {
                                        Debug( LDAP_DEBUG_ACL, "%c", e->e_ndn[n], 0, 0 );
                                }
                        }
                        Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
                }
 
-               if (state) {
-                       if (state->as_vi_acl == a && (state->as_recorded & ACL_STATE_RECORDED_NV)) {
-                               Debug( LDAP_DEBUG_ACL, "access_allowed: result from state (%s)\n", attr, 0, 0 );
+               if ( state ) {
+                       if ( state->as_vi_acl == a &&
+                               ( state->as_recorded & ACL_STATE_RECORDED_NV ) )
+                       {
+                               Debug( LDAP_DEBUG_ACL,
+                                       "access_allowed: result from state (%s)\n",
+                                       attr, 0, 0 );
                                ret = state->as_result;
                                goto done;
                        } else {
-                               Debug( LDAP_DEBUG_ACL, "access_allowed: no res from state (%s)\n", attr, 0, 0);
+                               Debug( LDAP_DEBUG_ACL,
+                                       "access_allowed: no res from state (%s)\n",
+                                       attr, 0, 0 );
                        }
                }
 
@@ -383,7 +724,7 @@ vd_access:
                        break;
                }
 
-               memset(matches, '\0', sizeof(matches));
+               memset( matches, '\0', sizeof(matches) );
        }
 
        if ( ACL_IS_INVALID( mask ) ) {
@@ -394,7 +735,7 @@ vd_access:
 
        } else if ( control == ACL_BREAK ) {
                Debug( LDAP_DEBUG_ACL,
-                       "=> access_allowed: no more rules\n", 0, 0, 0);
+                       "=> access_allowed: no more rules\n", 0, 0, 0 );
 
                goto done;
        }
@@ -408,19 +749,20 @@ vd_access:
        ret = ACL_GRANT(mask, access);
 
 done:
-       if( state != NULL ) {
+       if ( state != NULL ) {
                /* If not value-dependent, save ACL in case of more attrs */
-               if ( !(state->as_recorded & ACL_STATE_RECORDED_VD) ) {
+               if ( !( state->as_recorded & ACL_STATE_RECORDED_VD ) ) {
                        state->as_vi_acl = a;
                        state->as_result = ret;
                }
                state->as_recorded |= ACL_STATE_RECORDED;
        }
-       if (be_null) op->o_bd = NULL;
+       if ( be_null ) op->o_bd = NULL;
        if ( maskp ) *maskp = mask;
        return ret;
 }
 
+#endif /* SLAP_OVERLAY_ACCESS */
 
 /*
  * acl_get - return the acl applicable to entry e, attribute
@@ -578,11 +920,11 @@ acl_get(
                                        if ( vdnlen < patlen )
                                                continue;
        
-                                       if ( a->acl_dn_style == ACL_STYLE_BASE ) {
+                                       if ( a->acl_attrval_style == ACL_STYLE_BASE ) {
                                                if ( vdnlen > patlen )
                                                        continue;
        
-                                       } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
+                                       } else if ( a->acl_attrval_style == ACL_STYLE_ONE ) {
                                                int rdnlen = -1;
        
                                                if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
@@ -592,11 +934,11 @@ acl_get(
                                                if ( rdnlen != vdnlen - patlen - 1 )
                                                        continue;
        
-                                       } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
+                                       } 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_dn_style == ACL_STYLE_CHILDREN ) {
+                                       } else if ( a->acl_attrval_style == ACL_STYLE_CHILDREN ) {
                                                if ( vdnlen <= patlen )
                                                        continue;
        
@@ -1058,7 +1400,7 @@ acl_mask(
                "=> 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) );
+               accessmask2str( *mask, accessmaskbuf, 1 ) );
 
 
        if( state && ( state->as_recorded & ACL_STATE_RECORDED_VD )