sigkey handling: Introduce serialt type

[secnet.git] / secnet.h

diff --git a/secnet.h b/secnet.h
index 4a42b43c9fbdac105ad92d5ed0ddf85a66330d7e..24894f2759579a7b8410cfc332a4e7cdb070e531 100644 (file)
--- a/secnet.h
+++ b/secnet.h
@@ -49,6 +49,7 @@
 /* send at most this many copies; honour at most that many addresses */
 
 #define MAX_NAK_MSG 80
+#define MAX_SIG_KEYS 4
 
 struct hash_if;
 struct comm_if;
@@ -70,6 +71,31 @@ union iaddr {
 #endif
 };
 
+#define GRPIDSZ 4
+#define ALGIDSZ 1
+#define KEYIDSZ (GRPIDSZ+ALGIDSZ)
+  /* Changing these is complex: this is the group id plus algo id */
+  /* They are costructed by pubkeys.fl.pl.  Also hardcoded in _PR_ */
+struct sigkeyid { uint8_t b[KEYIDSZ]; };
+
+#define SIGKEYID_PR_FMT "%02x%02x%02x%02x%02x"
+#define SIGKEYID_PR_VAL(id) /* SIGKEYID_PR_VAL(const sigkeyid *id) */  \
+    ((id) == (const struct sigkeyid*)0, (id)->b[0]),                   \
+    (id)->b[1],(id)->b[2],(id)->b[3],(id)->b[4]
+static inline bool_t sigkeyid_equal(const struct sigkeyid *a,
+                                   const struct sigkeyid *b) {
+    return !memcmp(a->b, b->b, KEYIDSZ);
+}
+
+#define SERIALSZ 4
+typedef uint32_t serialt;
+static inline int serial_cmp(serialt a, serialt b) {
+    if (a==b) return 0;
+    if (!a) return -1;
+    if (!b) return +1;
+    return b-a <= (serialt)0x7fffffffUL ? +1 : -1;
+}
+
 #define ASSERT(x) do { if (!(x)) { fatal("assertion failed line %d file " \
                                         __FILE__,__LINE__); } } while(0)