diff options
Diffstat (limited to 'openssl/crypto/rand/rand_os2.c')
| -rw-r--r-- | openssl/crypto/rand/rand_os2.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/openssl/crypto/rand/rand_os2.c b/openssl/crypto/rand/rand_os2.c new file mode 100644 index 000000000..c3e36d4e5 --- /dev/null +++ b/openssl/crypto/rand/rand_os2.c @@ -0,0 +1,147 @@ +/* crypto/rand/rand_os2.c */ +/* ==================================================================== + * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include "cryptlib.h" +#include <openssl/rand.h> +#include "rand_lcl.h" + +#ifdef OPENSSL_SYS_OS2 + +#define INCL_DOSPROCESS +#define INCL_DOSPROFILE +#define INCL_DOSMISC +#define INCL_DOSMODULEMGR +#include <os2.h> + +#define CMD_KI_RDCNT (0x63) + +typedef struct _CPUUTIL { + ULONG ulTimeLow; /* Low 32 bits of time stamp */ + ULONG ulTimeHigh; /* High 32 bits of time stamp */ + ULONG ulIdleLow; /* Low 32 bits of idle time */ + ULONG ulIdleHigh; /* High 32 bits of idle time */ + ULONG ulBusyLow; /* Low 32 bits of busy time */ + ULONG ulBusyHigh; /* High 32 bits of busy time */ + ULONG ulIntrLow; /* Low 32 bits of interrupt time */ + ULONG ulIntrHigh; /* High 32 bits of interrupt time */ +} CPUUTIL; + +APIRET APIENTRY(*DosPerfSysCall) (ULONG ulCommand, ULONG ulParm1, ULONG ulParm2, ULONG ulParm3) = NULL; +APIRET APIENTRY(*DosQuerySysState) (ULONG func, ULONG arg1, ULONG pid, ULONG _res_, PVOID buf, ULONG bufsz) = NULL; +HMODULE hDoscalls = 0; + +int RAND_poll(void) +{ + char failed_module[20]; + QWORD qwTime; + ULONG SysVars[QSV_FOREGROUND_PROCESS]; + + if (hDoscalls == 0) { + ULONG rc = DosLoadModule(failed_module, sizeof(failed_module), "DOSCALLS", &hDoscalls); + + if (rc == 0) { + rc = DosQueryProcAddr(hDoscalls, 976, NULL, (PFN *)&DosPerfSysCall); + + if (rc) + DosPerfSysCall = NULL; + + rc = DosQueryProcAddr(hDoscalls, 368, NULL, (PFN *)&DosQuerySysState); + + if (rc) + DosQuerySysState = NULL; + } + } + + /* Sample the hi-res timer, runs at around 1.1 MHz */ + DosTmrQueryTime(&qwTime); + RAND_add(&qwTime, sizeof(qwTime), 2); + + /* Sample a bunch of system variables, includes various process & memory statistics */ + DosQuerySysInfo(1, QSV_FOREGROUND_PROCESS, SysVars, sizeof(SysVars)); + RAND_add(SysVars, sizeof(SysVars), 4); + + /* If available, sample CPU registers that count at CPU MHz + * Only fairly new CPUs (PPro & K6 onwards) & OS/2 versions support this + */ + if (DosPerfSysCall) { + CPUUTIL util; + + if (DosPerfSysCall(CMD_KI_RDCNT, (ULONG)&util, 0, 0) == 0) { + RAND_add(&util, sizeof(util), 10); + } + else { + DosPerfSysCall = NULL; + } + } + + /* DosQuerySysState() gives us a huge quantity of process, thread, memory & handle stats */ + if (DosQuerySysState) { + char *buffer = OPENSSL_malloc(256 * 1024); + + if (DosQuerySysState(0x1F, 0, 0, 0, buffer, 256 * 1024) == 0) { + /* First 4 bytes in buffer is a pointer to the thread count + * there should be at least 1 byte of entropy per thread + */ + RAND_add(buffer, 256 * 1024, **(ULONG **)buffer); + } + + OPENSSL_free(buffer); + return 1; + } + + return 0; +} + +#endif /* OPENSSL_SYS_OS2 */ |