test-example: Provide a fuzzer for the slip decoder

[secnet.git] / util.h

diff --git a/util.h b/util.h
index af19363ff33f34739be501f5bc112e86279926b8..5866e5784481376e9c2897ecabdb16b5c1f9c818 100644 (file)
--- a/util.h
+++ b/util.h
@@ -29,6 +29,17 @@ 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);
 
+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.
+   * New buffer state (in n) before this can be undefined.  After use,
+   * it must NOT be freed. */
+
 extern void buf_append_string(struct buffer_if *buf, cstring_t s);
 
 extern void read_mpbin(MP_INT *a, uint8_t *bin, int binsize);
@@ -39,4 +50,18 @@ extern int32_t write_mpbin(MP_INT *a, uint8_t *buffer, int32_t buflen);
 
 extern struct log_if *init_log(list_t *loglist);
 
+extern void send_nak(const struct comm_addr *dest, uint32_t our_index,
+                    uint32_t their_index, uint32_t msgtype,
+                    struct buffer_if *buf, const char *logwhy);
+
+extern int consttime_memeq(const void *s1, const void *s2, size_t n);
+
+#define MINMAX(ae,be,op) ({                    \
+       typeof((ae)) a=(ae);                    \
+       typeof((be)) b=(be);                    \
+       a op b ? a : b;                         \
+    })
+#define MAX(a,b) MINMAX((a),(b),>)
+#define MIN(a,b) MINMAX((a),(b),<)
+
 #endif /* util_h */