From 2990ce9b390ec1e2bfa1c043c406878e8aff86dd Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 21 Dec 2017 11:18:28 +0000
Subject:  Big 2.6.3.0 reorganization

 - Add libposixplz, update headers
 - Add memmem and friends
 - Add textmessage to libunixonacid
 - Update some sysdeps tests
---
 .../textmessage_receiver_hasmsginbuf.c              | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/libunixonacid/textmessage_receiver_hasmsginbuf.c

(limited to 'src/libunixonacid/textmessage_receiver_hasmsginbuf.c')

diff --git a/src/libunixonacid/textmessage_receiver_hasmsginbuf.c b/src/libunixonacid/textmessage_receiver_hasmsginbuf.c
new file mode 100644
index 0000000..d0cdcc3
--- /dev/null
+++ b/src/libunixonacid/textmessage_receiver_hasmsginbuf.c
@@ -0,0 +1,21 @@
+/* ISC license. */
+
+#include <stdint.h>
+#include <sys/uio.h>
+#include <skalibs/uint32.h>
+#include <skalibs/siovec.h>
+#include <skalibs/buffer.h>
+#include <skalibs/textmessage.h>
+
+int textmessage_receiver_hasmsginbuf (textmessage_receiver_t const *tr)
+{
+  size_t len = buffer_len(&tr->in) ;
+  uint32_t n ;
+  char pack[4] ;
+  struct iovec v[2] ;
+  if (len < 4) return 0 ;
+  buffer_rpeek(&tr->in, v) ;
+  siovec_gather(v, 2, pack, 4) ;
+  uint32_unpack_big(pack, &n) ;
+  return len - 4 >= n ;
+}
-- 
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