1 files changed, 24 insertions, 0 deletions
diff --git a/src/libtipidee/tipidee_response_header_date_fmt.c b/src/libtipidee/tipidee_response_header_date_fmt.c
new file mode 100644
index 0000000..df19673
--- /dev/null
+++ b/src/libtipidee/tipidee_response_header_date_fmt.c
@@ -0,0 +1,24 @@
+/* ISC license. */
+
+#include <string.h>
+#include <time.h>
+
+#include <skalibs/tai.h>
+#include <skalibs/djbtime.h>
+
+#include <tipidee/response.h>
+
+size_t tipidee_response_header_date_fmt (char *s, size_t max, tain const *stamp)
+{
+  size_t m = 0, l ;
+  struct tm tm ;
+  if (m + 6 > max) return 0 ;
+  if (!localtm_from_tai(&tm, tain_secp(stamp), 0)) return 0 ;
+  memcpy(s, "Date: ", 6) ; m += 6 ;
+  l = strftime(s + m, max - m, "%a, %d %b %Y %T GMT", &tm) ;
+  if (!l) return 0 ;
+  m += l ;
+  if (m + 2 > max) return 0 ;
+  s[m++] = '\r' ; s[m++] = '\n' ;
+  return m ;
+}