X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=secnet.git;a=blobdiff_plain;f=util.h;h=33b2b2bd865e0cb81c3e2d2d5c4a2a4706da7296;hp=1f43c5ea5caf34dbcf9a7da2e11cab8d5464b8f6;hb=0e646750a699f6dac806c7752c81d160c4f78987;hpb=ceb05e5ddbc5f140b1320c29a8b5841e61bc8250

diff --git a/util.h b/util.h
index 1f43c5e..33b2b2b 100644
--- a/util.h
+++ b/util.h
@@ -29,6 +29,36 @@ 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);
 
+/*
+ * 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.
@@ -51,6 +81,12 @@ extern void send_nak(const struct comm_addr *dest, uint32_t our_index,
 
 extern int consttime_memeq(const void *s1, const void *s2, size_t n);
 
+const char *iaddr_to_string(const union iaddr *ia);
+int iaddr_socklen(const union iaddr *ia);
+
+void string_item_to_iaddr(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);			\