summaryrefslogtreecommitdiff
path: root/lib/curl_rand.c
diff options
context:
space:
mode:
authorYang Tse <yangsita@gmail.com>2009-09-17 14:23:27 +0000
committerYang Tse <yangsita@gmail.com>2009-09-17 14:23:27 +0000
commitf2f45339dc378ed4d15b19ebf8d16e9f58d776e8 (patch)
treea9656262c646f1d8e35084d8bad29f0ec4db3f73 /lib/curl_rand.c
parentbe5c815f630f47fb9d9d520f526c24a902862db5 (diff)
downloadcurl-f2f45339dc378ed4d15b19ebf8d16e9f58d776e8.tar.gz
Moved Curl_rand() and Curl_srand() code from formdata.c and formdata.h
into curl_rand.c and curl_rand.h
Diffstat (limited to 'lib/curl_rand.c')
-rw-r--r--lib/curl_rand.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/lib/curl_rand.c b/lib/curl_rand.c
new file mode 100644
index 000000000..7719e0f08
--- /dev/null
+++ b/lib/curl_rand.c
@@ -0,0 +1,62 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+
+#include "setup.h"
+
+#include <curl/curl.h>
+
+#include "curl_rand.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/* Private pseudo-random number seed. Unsigned integer >= 32bit. Threads
+ mutual exclusion is not implemented to acess it since we do not require
+ high quality random numbers (only used in form boudary generation). */
+
+static unsigned int randseed;
+
+/* Pseudo-random number support. */
+
+unsigned int Curl_rand(void)
+{
+ unsigned int r;
+ /* Return an unsigned 32-bit pseudo-random number. */
+ r = randseed = randseed * 1103515245 + 12345;
+ return (r << 16) | ((r >> 16) & 0xFFFF);
+}
+
+void Curl_srand(void)
+{
+ /* Randomize pseudo-random number sequence. */
+
+ randseed = (unsigned int) time(NULL);
+ Curl_rand();
+ Curl_rand();
+ Curl_rand();
+}
+