X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=secnet.h;h=7da7c2d5a9935a7cd6bbb8285c8921faa7506594;hb=4a6ee8b677fd7addc97fc0d245f95ddde3b5f8e4;hp=5fafdcb5040556e355d809ed766fe2ed6b8d138e;hpb=9fcd759f42a3df955982a753162837d2034e26a8;p=secnet.git

diff --git a/secnet.h b/secnet.h
index 5fafdcb..7da7c2d 100644
--- a/secnet.h
+++ b/secnet.h
@@ -46,8 +46,12 @@
 #define MAX_PEER_ADDRS 5
 /* send at most this many copies; honour at most that many addresses */
 
+#define MAX_NAK_MSG 80
+
+struct hash_if;
 struct comm_if;
 struct comm_addr;
+struct priomsg;
 
 typedef char *string_t;
 typedef const char *cstring_t;
@@ -378,8 +382,8 @@ extern init_module log_module;
 struct buffer_if;
 
 struct alg_msg_data {
-    uint8_t *sigstart;
-    int32_t siglen;
+    uint8_t *start;
+    int32_t len;
 };
 
 /* PURE closure requires no interface */
@@ -418,12 +422,14 @@ 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 +442,7 @@ 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;
 };
 
@@ -458,10 +465,18 @@ typedef struct comm_clientinfo *comm_clientinfo_fn(void *state, dict_t*,
  * The semantics depend on the dict and defined by the comm, and
  * should be documented in README. */
 
+enum {
+    comm_notify_whynot_general,
+    comm_notify_whynot_unpick,
+    comm_notify_whynot_name_local,
+    comm_notify_whynot_name_remote,
+};
+
 /* Return True if the packet was processed, and shouldn't be passed to
    any other potential receivers. (buf is freed iff True returned.) */
 typedef bool_t comm_notify_fn(void *state, struct buffer_if *buf,
-			      const struct comm_addr *source);
+			      const struct comm_addr *source,
+			      struct priomsg *whynot);
 typedef void comm_request_notify_fn(void *commst, void *nst,
 				    comm_notify_fn *fn);
 typedef void comm_release_notify_fn(void *commst, void *nst,
@@ -639,11 +654,12 @@ struct dh_if {
 
 /* HASH interface */
 
-typedef void *hash_init_fn(void);
+typedef void hash_init_fn(void *st /* slen bytes alloc'd by caller */);
 typedef void hash_update_fn(void *st, const void *buf, int32_t len);
-typedef void hash_final_fn(void *st, uint8_t *digest);
+typedef void hash_final_fn(void *st, uint8_t *digest /* hlen bytes */);
 struct hash_if {
-    int32_t len; /* Hash output length in bytes */
+    int32_t slen; /* State length in bytes */
+    int32_t hlen; /* Hash output length in bytes */
     hash_init_fn *init;
     hash_update_fn *update;
     hash_final_fn *final;
@@ -654,7 +670,6 @@ struct hash_if {
 struct buffer_if {
     bool_t free;
     cstring_t owner; /* Set to constant string */
-    uint32_t flags; /* How paranoid should we be? */
     struct cloc loc; /* Where we were defined */
     uint8_t *base;
     uint8_t *start;
@@ -724,7 +739,7 @@ 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).
  */