source: trunk/sys/libcrypto/others/rand_os2.c @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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1/* crypto/rand/rand_os2.c */
2/* ====================================================================
3 * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in
14 *    the documentation and/or other materials provided with the
15 *    distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 *    software must display the following acknowledgment:
19 *    "This product includes software developed by the OpenSSL Project
20 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 *    endorse or promote products derived from this software without
24 *    prior written permission. For written permission, please contact
25 *    openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 *    nor may "OpenSSL" appear in their names without prior written
29 *    permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 *    acknowledgment:
33 *    "This product includes software developed by the OpenSSL Project
34 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com).  This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56#include "cryptlib.h"
57#include <openssl/rand.h>
58#include "rand_lcl.h"
59
60#ifdef OPENSSL_SYS_OS2
61
62#define INCL_DOSPROCESS
63#define INCL_DOSPROFILE
64#define INCL_DOSMISC
65#define INCL_DOSMODULEMGR
66#include <os2.h>
67
68#define   CMD_KI_RDCNT    (0x63)
69
70typedef struct _CPUUTIL {
71    ULONG ulTimeLow;            /* Low 32 bits of time stamp      */
72    ULONG ulTimeHigh;           /* High 32 bits of time stamp     */
73    ULONG ulIdleLow;            /* Low 32 bits of idle time       */
74    ULONG ulIdleHigh;           /* High 32 bits of idle time      */
75    ULONG ulBusyLow;            /* Low 32 bits of busy time       */
76    ULONG ulBusyHigh;           /* High 32 bits of busy time      */
77    ULONG ulIntrLow;            /* Low 32 bits of interrupt time  */
78    ULONG ulIntrHigh;           /* High 32 bits of interrupt time */
79} CPUUTIL;
80
81APIRET APIENTRY(*DosPerfSysCall) (ULONG ulCommand, ULONG ulParm1, ULONG ulParm2, ULONG ulParm3) = NULL;
82APIRET APIENTRY(*DosQuerySysState) (ULONG func, ULONG arg1, ULONG pid, ULONG _res_, PVOID buf, ULONG bufsz) = NULL;
83HMODULE hDoscalls = 0;
84
85int RAND_poll(void)
86{
87    char failed_module[20];
88    QWORD qwTime;
89    ULONG SysVars[QSV_FOREGROUND_PROCESS];
90
91    if (hDoscalls == 0) {
92        ULONG rc = DosLoadModule(failed_module, sizeof(failed_module), "DOSCALLS", &hDoscalls);
93
94        if (rc == 0) {
95            rc = DosQueryProcAddr(hDoscalls, 976, NULL, (PFN *)&DosPerfSysCall);
96
97            if (rc)
98                DosPerfSysCall = NULL;
99
100            rc = DosQueryProcAddr(hDoscalls, 368, NULL, (PFN *)&DosQuerySysState);
101
102            if (rc)
103                DosQuerySysState = NULL;
104        }
105    }
106
107    /* Sample the hi-res timer, runs at around 1.1 MHz */
108    DosTmrQueryTime(&qwTime);
109    RAND_add(&qwTime, sizeof(qwTime), 2);
110
111    /* Sample a bunch of system variables, includes various process & memory statistics */
112    DosQuerySysInfo(1, QSV_FOREGROUND_PROCESS, SysVars, sizeof(SysVars));
113    RAND_add(SysVars, sizeof(SysVars), 4);
114
115    /* If available, sample CPU registers that count at CPU MHz
116     * Only fairly new CPUs (PPro & K6 onwards) & OS/2 versions support this
117     */
118    if (DosPerfSysCall) {
119        CPUUTIL util;
120
121        if (DosPerfSysCall(CMD_KI_RDCNT, (ULONG)&util, 0, 0) == 0) {
122            RAND_add(&util, sizeof(util), 10);
123        }
124        else {
125            DosPerfSysCall = NULL;
126        }
127    }
128
129    /* DosQuerySysState() gives us a huge quantity of process, thread, memory & handle stats */
130    if (DosQuerySysState) {
131        char *buffer = OPENSSL_malloc(256 * 1024);
132
133        if (DosQuerySysState(0x1F, 0, 0, 0, buffer, 256 * 1024) == 0) {
134            /* First 4 bytes in buffer is a pointer to the thread count
135             * there should be at least 1 byte of entropy per thread
136             */
137            RAND_add(buffer, 256 * 1024, **(ULONG **)buffer);
138        }
139
140        OPENSSL_free(buffer);
141        return 1;
142    }
143
144    return 0;
145}
146
147#endif /* OPENSSL_SYS_OS2 */
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