X-Git-Url: https://git.distorted.org.uk/~mdw/secnet/blobdiff_plain/1caa23ff879cec7f8f36b32a987f0610291ef177..92a7d254975db245c3320855515bffc1aebda9e4:/util.h

diff --git a/util.h b/util.h
index e40fb54..cbe9f52 100644
--- a/util.h
+++ b/util.h
@@ -23,11 +23,18 @@ extern void buffer_assert_used(struct buffer_if *buffer, cstring_t file,
 			       int line);
 extern void buffer_new(struct buffer_if *buffer, int32_t len);
 extern void buffer_init(struct buffer_if *buffer, int32_t max_start_pad);
+extern void buffer_copy(struct buffer_if *dst, const struct buffer_if *src);
 extern void *buf_append(struct buffer_if *buf, int32_t amount);
 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);
 
+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);
@@ -38,4 +45,6 @@ extern int32_t write_mpbin(MP_INT *a, uint8_t *buffer, int32_t buflen);
 
 extern struct log_if *init_log(list_t *loglist);
 
+extern int consttime_memeq(const void *s1, const void *s2, size_t n);
+
 #endif /* util_h */