extern void *buf_unappend(struct buffer_if *buf, int32_t amount);
extern void *buf_unprepend(struct buffer_if *buf, int32_t amount);
+extern void buffer_readonly_view(struct buffer_if *n, const void*, int32_t len);
+extern void buffer_readonly_clone(struct buffer_if *n, const struct buffer_if*);
+ /* Caller must only use unappend, unprepend et al. on n.
+ * New buffer state (in n) before this can be undefined. After use,
+ * it must NOT be freed. */
+
extern void buf_append_string(struct buffer_if *buf, cstring_t s);
extern void read_mpbin(MP_INT *a, uint8_t *bin, int binsize);
extern struct log_if *init_log(list_t *loglist);
+extern void send_nak(const struct comm_addr *dest, uint32_t our_index,
+ uint32_t their_index, uint32_t msgtype,
+ struct buffer_if *buf, const char *logwhy);
+
+extern int consttime_memeq(const void *s1, const void *s2, size_t n);
+
#endif /* util_h */