#define BUF_FREE(buf) do { (buf)->free=True; } while(0)
extern void buffer_assert_free(struct buffer_if *buffer, cstring_t file,
- uint32_t line);
+ int line);
extern void buffer_assert_used(struct buffer_if *buffer, cstring_t file,
- uint32_t line);
-extern void buffer_new(struct buffer_if *buffer, uint32_t len);
-extern void buffer_init(struct buffer_if *buffer, uint32_t max_start_pad);
-extern void *buf_append(struct buffer_if *buf, uint32_t amount);
-extern void *buf_prepend(struct buffer_if *buf, uint32_t amount);
-extern void *buf_unappend(struct buffer_if *buf, uint32_t amount);
-extern void *buf_unprepend(struct buffer_if *buf, uint32_t amount);
+ int line);
+extern void buffer_new(struct buffer_if *buffer, int32_t len);
+extern void buffer_init(struct buffer_if *buffer, int32_t max_start_pad);
+extern void buffer_copy(struct buffer_if *dst, const struct buffer_if *src);
+extern void *buf_append(struct buffer_if *buf, int32_t amount);
+extern void *buf_prepend(struct buffer_if *buf, int32_t amount);
+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 char *write_mpstring(MP_INT *a);
-extern uint32_t write_mpbin(MP_INT *a, uint8_t *buffer, uint32_t buflen);
+extern int32_t write_mpbin(MP_INT *a, uint8_t *buffer, int32_t buflen);
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);
+
+#define MINMAX(ae,be,op) ({ \
+ typeof((ae)) a=(ae); \
+ typeof((be)) b=(be); \
+ a op b ? a : b; \
+ })
+#define MAX(a,b) MINMAX((a),(b),>)
+#define MIN(a,b) MINMAX((a),(b),<)
+
#endif /* util_h */