extern void *buf_unappend(struct buffer_if *buf, int32_t amount);
extern void *buf_unprepend(struct buffer_if *buf, int32_t amount);
+/*
+ * void BUF_ADD_BYTES(append, struct buffer_if*, const void*, int32_t size);
+ * void BUF_ADD_BYTES(prepend, struct buffer_if*, const void*, int32_t size);
+ * void BUF_GET_BYTES(unappend, struct buffer_if*, void*, int32_t size);
+ * void BUF_GET_BYTES(unprepend, struct buffer_if*, void*, int32_t size);
+ * // all of these evaluate size twice
+ *
+ * void BUF_ADD_OBJ(append, struct_buffer_if*, const OBJECT& something);
+ * void BUF_ADD_OBJ(prepend, struct_buffer_if*, const OBJECT& something);
+ * void BUF_GET_OBJ(unappend, struct_buffer_if*, OBJECT& something);
+ * void BUF_GET_OBJ(unprepend, struct_buffer_if*, OBJECT& something);
+ */
+#define BUF_ADD_BYTES(appendprepend, bufp, datap, size) \
+ (buf_un##appendprepend /* ensures we have correct direction */, \
+ memcpy(buf_##appendprepend((bufp),(size)),(datap),(size)))
+#define BUF_ADD_OBJ(appendprepend, bufp, obj) \
+ BUF_ADD_BYTES(appendprepend,(bufp),&(obj),sizeof((obj)))
+#define BUF_GET_BYTES(unappendunprepend, bufp, datap, size) \
+ (BUF_GET__DOESNOTEXIST__buf_un##unappendunprepend, \
+ memcpy((datap),buf_##unappendunprepend((bufp),(size)),(size)))
+#define BUF_GET_OBJ(unappendunprepend, bufp, obj) \
+ BUF_ADD_BYTES(unappendunprepend,&(obj),(bufp),sizeof((obj)))
+#define BUF_GET__DOESNOTEXIST__buf_ununappend 0
+#define BUF_GET__DOESNOTEXIST__buf_ununprepend 0
+
+static inline int32_t buf_remaining_space(const struct buffer_if *buf)
+{
+ return (buf->base + buf->alloclen) - (buf->start + buf->size);
+}
+
+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);
+
+const char *iaddr_to_string(const union iaddr *ia);
+bool_t iaddr_equal(const union iaddr *ia, const union iaddr *ib);
+int iaddr_socklen(const union iaddr *ia);
+
+void text2iaddr(const item_t *item, uint16_t port, union iaddr *ia,
+ const char *desc);
+
+#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 */