From d73ccbc126145f965cc2999bb939d370f5cc1e33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Thu, 7 Nov 2002 09:27:30 +0100
Subject: [PATCH] (sexp_transport_format, sexp_transport_vformat): New file,
new functions.
Rev: src/nettle/sexp-transport-format.c:1.1
---
sexp-transport-format.c | 84 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
create mode 100644 sexp-transport-format.c
diff --git a/sexp-transport-format.c b/sexp-transport-format.c
new file mode 100644
index 00000000..feb685dc
--- /dev/null
+++ b/sexp-transport-format.c
@@ -0,0 +1,84 @@
+/* sexp-transport-format.c
+ *
+ * Writing s-expressions in transport format.
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2002 Niels Möller
+ *
+ * The nettle library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ *
+ * The nettle library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the nettle library; see the file COPYING.LIB. If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#include "sexp.h"
+
+#include "base64.h"
+#include "buffer.h"
+
+unsigned
+sexp_transport_vformat(struct nettle_buffer *buffer,
+ const char *format, va_list args)
+{
+ unsigned start = 0;
+ unsigned length;
+ unsigned base64_length;
+
+ if (buffer)
+ {
+ if (!NETTLE_BUFFER_PUTC(buffer, '{'))
+ return 0;
+
+ start = buffer->size;
+ }
+
+ length = sexp_vformat(buffer, format, args);
+
+ if (!length)
+ return 0;
+
+ base64_length = BASE64_ENCODE_RAW_LENGTH(length);
+
+ if (buffer)
+ {
+ /* FIXME: This assumes that data is never removed from the
+ * buffer. That works for the current buffer, but it would be
+ * nice to get rid of this restriction. */
+ if (!nettle_buffer_space(buffer, base64_length - length))
+ return 0;
+
+ base64_encode_raw(buffer->contents + start,
+ length, buffer->contents + start);
+
+ if (!NETTLE_BUFFER_PUTC(buffer, '}'))
+ return 0;
+ }
+
+ return base64_length + 2;
+}
+
+unsigned
+sexp_transport_format(struct nettle_buffer *buffer,
+ const char *format, ...)
+{
+ unsigned done;
+ va_list args;
+
+ va_start(args, format);
+ done = sexp_transport_vformat(buffer, format, args);
+ va_end(args);
+
+ return done;
+}
--
GitLab