1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define APR_WANT_MEMFUNC
18 #include "apr_want.h"
19 #include "apr_general.h"
20 #include "apr_private.h"
21
22 #if APR_HAS_RANDOM
23
24 #include <nks/plat.h>
25
NXSeedRandomInternal(size_t width,void * seed)26 static int NXSeedRandomInternal( size_t width, void *seed )
27 {
28 static int init = 0;
29 int *s = (int *) seed;
30 union { int x; char y[4]; } u;
31
32 if (!init) {
33 srand(NXGetSystemTick());
34 init = 1;
35 }
36
37 if (width > 3)
38 {
39 do
40 {
41 *s++ = rand();
42 }
43 while ((width -= 4) > 3);
44 }
45
46 if (width > 0)
47 {
48 char *p = (char *) s;
49
50 u.x = rand();
51
52 while (width > 0)
53 *p++ = u.y[width--];
54 }
55
56 return APR_SUCCESS;
57 }
58
apr_generate_random_bytes(unsigned char * buf,apr_size_t length)59 APR_DECLARE(apr_status_t) apr_generate_random_bytes(unsigned char *buf,
60 apr_size_t length)
61 {
62 if (NXSeedRandom(length, buf) != 0) {
63 return NXSeedRandomInternal (length, buf);
64 }
65 return APR_SUCCESS;
66 }
67
68
69
70 #endif /* APR_HAS_RANDOM */
71