COPY_OBJ: we use sizeof(dst) so relax restriction on src

[secnet.git] / secnet.h

diff --git a/secnet.h b/secnet.h
index 5fafdcb5040556e355d809ed766fe2ed6b8d138e..d2575f17ae9a2d71e3fca8b037b75504e1b10760 100644 (file)
--- a/secnet.h
+++ b/secnet.h
@@ -46,6 +46,7 @@
 #define MAX_PEER_ADDRS 5
 /* send at most this many copies; honour at most that many addresses */
 
+struct hash_if;
 struct comm_if;
 struct comm_addr;
 
@@ -418,12 +419,14 @@ struct random_if {
 
 /* SIGPUBKEY interface */
 
+typedef void sig_sethash_fn(void *st, struct hash_if *hash);
 typedef bool_t sig_unpick_fn(void *sst, struct buffer_if *msg,
                             struct alg_msg_data *sig);
 typedef bool_t sig_checksig_fn(void *st, uint8_t *data, int32_t datalen,
                               const struct alg_msg_data *sig);
 struct sigpubkey_if {
     void *st;
+    sig_sethash_fn *sethash; /* must be called before check, if non-0 */
     sig_unpick_fn *unpick;
     sig_checksig_fn *check;
 };
@@ -436,6 +439,7 @@ typedef bool_t sig_makesig_fn(void *st, uint8_t *data, int32_t datalen,
                              struct buffer_if *msg);
 struct sigprivkey_if {
     void *st;
+    sig_sethash_fn *sethash; /* must be called before sign, if non-0 */
     sig_makesig_fn *sign;
 };
 
@@ -724,7 +728,7 @@ extern void log_from_fd(int fd, cstring_t prefix, struct log_if *log);
  * void COPY_OBJ(  OBJECT& dst, const OBJECT& src);
  * void COPY_ARRAY(OBJECT *dst, const OBJECT *src, INTEGER count);
  *   // Typesafe: we check that the type OBJECT is the same in both cases.
- *   // It is OK to use COPY_OBJ on an array object, provided it's
+ *   // It is OK to use COPY_OBJ on an array object, provided dst is
  *   // _actually_ the whole array object and not decayed into a
  *   // pointer (e.g. a formal parameter).
  */