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153 lines
5.6 KiB
153 lines
5.6 KiB
/* crypto/rand/rand_os2.c */
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/* ====================================================================
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* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include "cryptlib.h"
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#include <openssl/rand.h>
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#include "rand_lcl.h"
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#ifdef OPENSSL_SYS_OS2
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#define INCL_DOSPROCESS
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#define INCL_DOSPROFILE
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#define INCL_DOSMISC
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#define INCL_DOSMODULEMGR
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#include <os2.h>
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#define CMD_KI_RDCNT (0x63)
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typedef struct _CPUUTIL {
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ULONG ulTimeLow; /* Low 32 bits of time stamp */
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ULONG ulTimeHigh; /* High 32 bits of time stamp */
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ULONG ulIdleLow; /* Low 32 bits of idle time */
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ULONG ulIdleHigh; /* High 32 bits of idle time */
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ULONG ulBusyLow; /* Low 32 bits of busy time */
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ULONG ulBusyHigh; /* High 32 bits of busy time */
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ULONG ulIntrLow; /* Low 32 bits of interrupt time */
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ULONG ulIntrHigh; /* High 32 bits of interrupt time */
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} CPUUTIL;
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#ifndef __KLIBC__
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APIRET APIENTRY(*DosPerfSysCall) (ULONG ulCommand, ULONG ulParm1, ULONG ulParm2, ULONG ulParm3) = NULL;
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APIRET APIENTRY(*DosQuerySysState) (ULONG func, ULONG arg1, ULONG pid, ULONG _res_, PVOID buf, ULONG bufsz) = NULL;
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#endif
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HMODULE hDoscalls = 0;
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int RAND_poll(void)
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{
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char failed_module[20];
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QWORD qwTime;
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ULONG SysVars[QSV_FOREGROUND_PROCESS];
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if (hDoscalls == 0) {
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ULONG rc = DosLoadModule(failed_module, sizeof(failed_module), "DOSCALLS", &hDoscalls);
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#ifndef __KLIBC__
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if (rc == 0) {
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rc = DosQueryProcAddr(hDoscalls, 976, NULL, (PFN *)&DosPerfSysCall);
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if (rc)
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DosPerfSysCall = NULL;
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rc = DosQueryProcAddr(hDoscalls, 368, NULL, (PFN *)&DosQuerySysState);
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if (rc)
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DosQuerySysState = NULL;
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}
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#endif
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}
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/* Sample the hi-res timer, runs at around 1.1 MHz */
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DosTmrQueryTime(&qwTime);
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RAND_add(&qwTime, sizeof(qwTime), 2);
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/* Sample a bunch of system variables, includes various process & memory statistics */
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DosQuerySysInfo(1, QSV_FOREGROUND_PROCESS, SysVars, sizeof(SysVars));
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RAND_add(SysVars, sizeof(SysVars), 4);
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/* If available, sample CPU registers that count at CPU MHz
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* Only fairly new CPUs (PPro & K6 onwards) & OS/2 versions support this
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*/
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if (DosPerfSysCall) {
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CPUUTIL util;
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if (DosPerfSysCall(CMD_KI_RDCNT, (ULONG)&util, 0, 0) == 0) {
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RAND_add(&util, sizeof(util), 10);
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}
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else {
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#ifndef __KLIBC__
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DosPerfSysCall = NULL;
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#endif
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}
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}
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/* DosQuerySysState() gives us a huge quantity of process, thread, memory & handle stats */
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if (DosQuerySysState) {
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char *buffer = OPENSSL_malloc(256 * 1024);
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if (DosQuerySysState(0x1F, 0, 0, 0, buffer, 256 * 1024) == 0) {
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/* First 4 bytes in buffer is a pointer to the thread count
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* there should be at least 1 byte of entropy per thread
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*/
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RAND_add(buffer, 256 * 1024, **(ULONG **)buffer);
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}
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OPENSSL_free(buffer);
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return 1;
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}
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return 0;
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}
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#endif /* OPENSSL_SYS_OS2 */
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