Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | |
| 70 | typedef 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 | |
| 81 | #ifndef __KLIBC__ |
| 82 | APIRET APIENTRY(*DosPerfSysCall) (ULONG ulCommand, ULONG ulParm1, ULONG ulParm2, ULONG ulParm3) = NULL; |
| 83 | APIRET APIENTRY(*DosQuerySysState) (ULONG func, ULONG arg1, ULONG pid, ULONG _res_, PVOID buf, ULONG bufsz) = NULL; |
| 84 | #endif |
| 85 | HMODULE hDoscalls = 0; |
| 86 | |
| 87 | int RAND_poll(void) |
| 88 | { |
| 89 | char failed_module[20]; |
| 90 | QWORD qwTime; |
| 91 | ULONG SysVars[QSV_FOREGROUND_PROCESS]; |
| 92 | |
| 93 | if (hDoscalls == 0) { |
| 94 | ULONG rc = DosLoadModule(failed_module, sizeof(failed_module), "DOSCALLS", &hDoscalls); |
| 95 | |
| 96 | #ifndef __KLIBC__ |
| 97 | if (rc == 0) { |
| 98 | rc = DosQueryProcAddr(hDoscalls, 976, NULL, (PFN *)&DosPerfSysCall); |
| 99 | |
| 100 | if (rc) |
| 101 | DosPerfSysCall = NULL; |
| 102 | |
| 103 | rc = DosQueryProcAddr(hDoscalls, 368, NULL, (PFN *)&DosQuerySysState); |
| 104 | |
| 105 | if (rc) |
| 106 | DosQuerySysState = NULL; |
| 107 | } |
| 108 | #endif |
| 109 | } |
| 110 | |
| 111 | /* Sample the hi-res timer, runs at around 1.1 MHz */ |
| 112 | DosTmrQueryTime(&qwTime); |
| 113 | RAND_add(&qwTime, sizeof(qwTime), 2); |
| 114 | |
| 115 | /* Sample a bunch of system variables, includes various process & memory statistics */ |
| 116 | DosQuerySysInfo(1, QSV_FOREGROUND_PROCESS, SysVars, sizeof(SysVars)); |
| 117 | RAND_add(SysVars, sizeof(SysVars), 4); |
| 118 | |
| 119 | /* If available, sample CPU registers that count at CPU MHz |
| 120 | * Only fairly new CPUs (PPro & K6 onwards) & OS/2 versions support this |
| 121 | */ |
| 122 | if (DosPerfSysCall) { |
| 123 | CPUUTIL util; |
| 124 | |
| 125 | if (DosPerfSysCall(CMD_KI_RDCNT, (ULONG)&util, 0, 0) == 0) { |
| 126 | RAND_add(&util, sizeof(util), 10); |
| 127 | } |
| 128 | else { |
| 129 | #ifndef __KLIBC__ |
| 130 | DosPerfSysCall = NULL; |
| 131 | #endif |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | /* DosQuerySysState() gives us a huge quantity of process, thread, memory & handle stats */ |
| 136 | if (DosQuerySysState) { |
| 137 | char *buffer = OPENSSL_malloc(256 * 1024); |
| 138 | |
| 139 | if (DosQuerySysState(0x1F, 0, 0, 0, buffer, 256 * 1024) == 0) { |
| 140 | /* First 4 bytes in buffer is a pointer to the thread count |
| 141 | * there should be at least 1 byte of entropy per thread |
| 142 | */ |
| 143 | RAND_add(buffer, 256 * 1024, **(ULONG **)buffer); |
| 144 | } |
| 145 | |
| 146 | OPENSSL_free(buffer); |
| 147 | return 1; |
| 148 | } |
| 149 | |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | #endif /* OPENSSL_SYS_OS2 */ |