Add mud_get_bad()

Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>

mud.c

@@ -154,12 +154,7 @@ struct mud {
         int set;
         struct sockaddr_storage addr;
     } peer;
-    struct {
-        struct {
-            struct sockaddr_storage addr;
-            uint64_t time;
-        } decrypt, difftime, keyx;
-    } bad;
+    struct mud_bad bad;
     uint64_t window;
     uint64_t base_time;
 };
@@ -675,6 +670,19 @@ mud_peer(struct mud *mud, struct sockaddr *peer)
     return 0;
 }
 
+int
+mud_get_bad(struct mud *mud, struct mud_bad *bad)
+{
+    if (!bad) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    memcpy(bad, &mud->bad, sizeof(struct mud_bad));
+
+    return 0;
+}
+
 int
 mud_get_key(struct mud *mud, unsigned char *key, size_t *size)
 {
@@ -1303,6 +1311,7 @@ mud_recv_msg(struct mud *mud, struct mud_path *path,
         if (mud_keyx(mud, msg->pk, msg->aes)) {
             mud->bad.keyx.addr = path->addr;
             mud->bad.keyx.time = now;
+            mud->bad.keyx.count++;
             return;
         }
 
@@ -1373,6 +1382,7 @@ mud_recv(struct mud *mud, void *data, size_t size)
         (MUD_TIME_MASK(send_time - now) > mud->time_tolerance)) {
         mud->bad.difftime.addr = addr;
         mud->bad.difftime.time = now;
+        mud->bad.difftime.count++;
         return 0;
     }
 
@@ -1383,6 +1393,7 @@ mud_recv(struct mud *mud, void *data, size_t size)
     if (ret <= 0) {
         mud->bad.decrypt.addr = addr;
         mud->bad.decrypt.time = now;
+        mud->bad.decrypt.count++;
         return 0;
     }
 

mud.h

@@ -53,6 +53,14 @@ struct mud_path {
     unsigned msg_sent;
 };
 
+struct mud_bad {
+    struct {
+        struct sockaddr_storage addr;
+        uint64_t time;
+        uint64_t count;
+    } decrypt, difftime, keyx;
+};
+
 struct mud *mud_create (struct sockaddr *);
 void        mud_delete (struct mud *);
 
@@ -64,6 +72,8 @@ int mud_get_key (struct mud *, unsigned char *, size_t *);
 void   mud_set_mtu (struct mud *, size_t);
 size_t mud_get_mtu (struct mud *);
 
+int mud_get_bad (struct mud *, struct mud_bad *);
+
 long mud_send_wait (struct mud *);
 
 int mud_set_time_tolerance (struct mud *, unsigned long);