1 files changed, 73 insertions, 0 deletions
diff --git a/v3/contrib/libwebsock/src/util.c b/v3/contrib/libwebsock/src/util.c
new file mode 100644
index 0000000..2de1de2
--- /dev/null
+++ b/v3/contrib/libwebsock/src/util.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of libwebsock
+ *
+ * Copyright (C) 2012 Payden Sutherland
+ *
+ * libwebsock is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 3 of the License.
+ *
+ * libwebsock 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libwebsock; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+ */
+
+#include "websock.h"
+
+#define UTF8_ACCEPT 0
+#define UTF8_REJECT 1
+
+//these functions assume little endian machine as they're only used on windows
+uint16_t
+lws_htobe16(uint16_t x)
+{
+  return ((x & 0x00ff) << 8) | ((x & 0xff00) >> 8);
+}
+
+uint16_t lws_be16toh(uint16_t x)
+{
+  return ((x & 0x00ff) << 8) | ((x & 0xff00) >> 8);
+}
+
+uint64_t lws_htobe64(uint64_t x)
+{
+	return (x >> 56) |
+  	((x << 40) & 0x00ff000000000000LL) |
+  	((x << 24) & 0x0000ff0000000000LL) |
+  	((x << 8) & 0x000000ff00000000LL) |
+  	((x >> 8) & 0x00000000ff000000LL) |
+  	((x >> 24) & 0x0000000000ff0000LL) |
+  	((x >> 40) & 0x000000000000ff00LL) |
+  	(x << 56);
+}
+
+uint64_t lws_be64toh(uint64_t x)
+{
+	return (x >> 56) |
+		((x << 40) & 0x00ff000000000000LL) |
+		((x << 24) & 0x0000ff0000000000LL) |
+		((x << 8) & 0x000000ff00000000LL) |
+		((x >> 8) & 0x00000000ff000000LL) |
+		((x >> 24) & 0x0000000000ff0000LL) |
+		((x >> 40) & 0x000000000000ff00LL) |
+		(x << 56);
+}
+
+int
+validate_utf8_sequence(uint8_t *s)
+{
+  uint32_t codepoint;
+  uint32_t state = 0;
+
+  for(; *s; ++s) {
+    decode(&state, &codepoint, *s);
+  }
+
+
+  return state == UTF8_ACCEPT;
+}