1 files changed, 110 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/src/md/os2/os2rng.c b/mozilla/nsprpub/pr/src/md/os2/os2rng.c
new file mode 100644
index 0000000..1c3a7b7
--- /dev/null
+++ b/mozilla/nsprpub/pr/src/md/os2/os2rng.c
@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1999-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+#define INCL_DOS
+#define INCL_DOSERRORS
+#include <os2.h>
+#include <stdlib.h>
+#include <time.h>
+#include "primpl.h"
+
+static BOOL clockTickTime(unsigned long *phigh, unsigned long *plow)
+{
+    APIRET rc = NO_ERROR;
+    QWORD qword = {0,0};
+
+    rc = DosTmrQueryTime(&qword);
+    if (rc != NO_ERROR)
+       return FALSE;
+
+    *phigh = qword.ulHi;
+    *plow  = qword.ulLo;
+
+    return TRUE;
+}
+
+extern PRSize _PR_MD_GetRandomNoise(void *buf, PRSize size )
+{
+    unsigned long high = 0;
+    unsigned long low  = 0;
+    clock_t val = 0;
+    int n = 0;
+    int nBytes = 0;
+    time_t sTime;
+
+    if (size <= 0)
+       return 0;
+
+    clockTickTime(&high, &low);
+
+    /* get the maximally changing bits first */
+    nBytes = sizeof(low) > size ? size : sizeof(low);
+    memcpy(buf, &low, nBytes);
+    n += nBytes;
+    size -= nBytes;
+
+    if (size <= 0)
+       return n;
+
+    nBytes = sizeof(high) > size ? size : sizeof(high);
+    memcpy(((char *)buf) + n, &high, nBytes);
+    n += nBytes;
+    size -= nBytes;
+
+    if (size <= 0)
+       return n;
+
+    /* get the number of milliseconds that have elapsed since application started */
+    val = clock();
+
+    nBytes = sizeof(val) > size ? size : sizeof(val);
+    memcpy(((char *)buf) + n, &val, nBytes);
+    n += nBytes;
+    size -= nBytes;
+
+    if (size <= 0)
+       return n;
+
+    /* get the time in seconds since midnight Jan 1, 1970 */
+    time(&sTime);
+    nBytes = sizeof(sTime) > size ? size : sizeof(sTime);
+    memcpy(((char *)buf) + n, &sTime, nBytes);
+    n += nBytes;
+
+    return n;
+}