+typedef struct tr_filter_set TR_FILTER_SET;
+struct tr_filter_set {
+ TR_FILTER *this;
+ TR_FILTER_SET *next;
+};
+
+/**
+ * Structure to hold information needed to filter different targets.
+ */
+typedef struct tr_filter_target {
+ /* An inforec also needs realm and community information */
+ TRP_INFOREC *trp_inforec;
+ TRP_UPD *trp_upd;
+
+ /* a TID request has all the data it needs to be filtered */
+ TID_REQ *tid_req;
+} TR_FILTER_TARGET;
+
+TR_FILTER_SET *tr_filter_set_new(TALLOC_CTX *mem_ctx);
+void tr_filter_set_free(TR_FILTER_SET *fs);
+int tr_filter_set_add(TR_FILTER_SET *set, TR_FILTER *new);
+TR_FILTER *tr_filter_set_get(TR_FILTER_SET *set, TR_FILTER_TYPE type);
+
+TR_FILTER *tr_filter_new(TALLOC_CTX *mem_ctx);
+void tr_filter_free(TR_FILTER *filt);
+
+void tr_filter_set_type(TR_FILTER *filt, TR_FILTER_TYPE type);
+TR_FILTER_TYPE tr_filter_get_type(TR_FILTER *filt);
+TR_FLINE *tr_filter_add_line(TR_FILTER *filt, TR_FLINE *line);
+
+TR_FLINE *tr_fline_new(TALLOC_CTX *mem_ctx);
+void tr_fline_free(TR_FLINE *fline);
+TR_FSPEC *tr_fline_add_spec(TR_FLINE *fline, TR_FSPEC *spec);
+
+TR_FSPEC *tr_fspec_new(TALLOC_CTX *mem_ctx);
+void tr_fspec_free(TR_FSPEC *fspec);
+TR_NAME *tr_fspec_add_match(TR_FSPEC *fspec, TR_NAME *match);
+
+int tr_fspec_matches(TR_FSPEC *fspec, TR_FILTER_TYPE ftype, TR_FILTER_TARGET *target);
+
+/* Iterator for TR_FILTER lines */
+typedef TR_LIST_ITER TR_FILTER_ITER;
+#define tr_filter_iter_new(CTX) (tr_list_iter_new(CTX))
+#define tr_filter_iter_free(ITER) (tr_list_iter_free(ITER))
+#define tr_filter_iter_first(ITER, FILT) ((TR_FLINE *) tr_list_iter_first((ITER), (FILT)->lines))
+#define tr_filter_iter_next(ITER) ((TR_FLINE *) tr_list_iter_next(ITER))
+#define tr_filter_add_line(FILT, LINE) ((TR_FLINE *) tr_list_add((FILT)->lines, (LINE), 1))
+
+/* Iterator for TR_FSPEC matches */
+typedef TR_LIST_ITER TR_FSPEC_ITER;
+#define tr_fspec_iter_new(CTX) (tr_list_iter_new(CTX))
+#define tr_fspec_iter_free(ITER) (tr_list_iter_free(ITER))
+#define tr_fspec_iter_first(ITER, SPEC) (tr_list_iter_first((ITER), (SPEC)->match))
+#define tr_fspec_iter_next(ITER) (tr_list_iter_next(ITER))
+#define tr_fspec_add_match(SPEC, MATCH) ((TR_NAME *) tr_list_add((SPEC)->match, (MATCH), 0))
+
+/* Iterator for TR_FLINE specs */
+typedef TR_LIST_ITER TR_FLINE_ITER;
+#define tr_fline_iter_new(CTX) (tr_list_iter_new(CTX))
+#define tr_fline_iter_free(ITER) (tr_list_iter_free(ITER))
+#define tr_fline_iter_first(ITER, LINE) (tr_list_iter_first((ITER), (LINE)->specs))
+#define tr_fline_iter_next(ITER) (tr_list_iter_next(ITER))
+#define tr_fline_add_spec(LINE, SPEC) ((TR_NAME *) tr_list_add((LINE)->specs, (SPEC), 1))
+
+/*In tr_constraint.c and exported, but not really a public symbol; needed by tr_filter.c and by tr_constraint.c*/
+int TR_EXPORT tr_prefix_wildcard_match(const char *str, const char *wc_str);
+
+int tr_filter_apply(TR_FILTER_TARGET *target, TR_FILTER *filt, TR_CONSTRAINT_SET **constraints, TR_FILTER_ACTION *out_action);
+void tr_filter_target_free(TR_FILTER_TARGET *target);
+TR_FILTER_TARGET *tr_filter_target_tid_req(TALLOC_CTX *mem_ctx, TID_REQ *req);
+TR_FILTER_TARGET *tr_filter_target_trp_inforec(TALLOC_CTX *mem_ctx, TRP_UPD *upd, TRP_INFOREC *inforec);
+
+TR_CONSTRAINT_SET *tr_constraint_set_from_fline(TR_FLINE *fline);
+
+int tr_filter_validate(TR_FILTER *filt);
+int tr_filter_validate_spec_field(TR_FILTER_TYPE ftype, TR_FSPEC *fspec);
+const char *tr_filter_type_to_string(TR_FILTER_TYPE ftype);
+TR_FILTER_TYPE tr_filter_type_from_string(const char *s);
+
+/* tr_filter_encoders.c */
+json_t *tr_filter_set_to_json(TR_FILTER_SET *filter_set);
+