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/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1994-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#define INCL_DOS
#define INCL_DOSERRORS
#include <os2.h>
#include <secrng.h>
#include <stdlib.h>
static BOOL clockTickTime(unsigned long *phigh, unsigned long *plow)
{
APIRET rc = NO_ERROR;
QWORD qword = {0,0};
rc = DosTmrQueryTime(&qword);
if (rc != NO_ERROR)
return FALSE;
*phigh = qword.ulHi;
*plow = qword.ulLo;
return TRUE;
}
size_t RNG_GetNoise(void *buf, size_t maxbuf)
{
unsigned long high = 0;
unsigned long low = 0;
clock_t val = 0;
int n = 0;
int nBytes = 0;
time_t sTime;
if (maxbuf <= 0)
return 0;
clockTickTime(&high, &low);
/* get the maximally changing bits first */
nBytes = sizeof(low) > maxbuf ? maxbuf : sizeof(low);
memcpy(buf, &low, nBytes);
n += nBytes;
maxbuf -= nBytes;
if (maxbuf <= 0)
return n;
nBytes = sizeof(high) > maxbuf ? maxbuf : sizeof(high);
memcpy(((char *)buf) + n, &high, nBytes);
n += nBytes;
maxbuf -= nBytes;
if (maxbuf <= 0)
return n;
/* get the number of milliseconds that have elapsed since application started */
val = clock();
nBytes = sizeof(val) > maxbuf ? maxbuf : sizeof(val);
memcpy(((char *)buf) + n, &val, nBytes);
n += nBytes;
maxbuf -= nBytes;
if (maxbuf <= 0)
return n;
/* get the time in seconds since midnight Jan 1, 1970 */
time(&sTime);
nBytes = sizeof(sTime) > maxbuf ? maxbuf : sizeof(sTime);
memcpy(((char *)buf) + n, &sTime, nBytes);
n += nBytes;
return n;
}
void RNG_SystemInfoForRNG(void)
{
unsigned long *plong = 0;
PTIB ptib;
PPIB ppib;
APIRET rc = NO_ERROR;
DATETIME dt;
COUNTRYCODE cc;
COUNTRYINFO ci;
unsigned long actual;
char path[_MAX_PATH]="";
unsigned long pathlength = sizeof(path);
FSALLOCATE fsallocate;
FILESTATUS3 fstatus;
unsigned long defaultdrive = 0;
unsigned long logicaldrives = 0;
unsigned long counter = 0;
char buffer[20];
int nBytes = 0;
nBytes = RNG_GetNoise(buffer, sizeof(buffer));
RNG_RandomUpdate(buffer, nBytes);
/* allocate memory and use address and memory */
plong = (unsigned long *)malloc(sizeof(*plong));
RNG_RandomUpdate(&plong, sizeof(plong));
RNG_RandomUpdate(plong, sizeof(*plong));
free(plong);
/* process info */
rc = DosGetInfoBlocks(&ptib, &ppib);
if (rc == NO_ERROR)
{
RNG_RandomUpdate(ptib, sizeof(*ptib));
RNG_RandomUpdate(ppib, sizeof(*ppib));
}
/* time */
rc = DosGetDateTime(&dt);
if (rc == NO_ERROR)
{
RNG_RandomUpdate(&dt, sizeof(dt));
}
/* country */
rc = DosQueryCtryInfo(sizeof(ci), &cc, &ci, &actual);
if (rc == NO_ERROR)
{
RNG_RandomUpdate(&cc, sizeof(cc));
RNG_RandomUpdate(&ci, sizeof(ci));
RNG_RandomUpdate(&actual, sizeof(actual));
}
/* current directory */
rc = DosQueryCurrentDir(0, path, &pathlength);
if (rc == NO_ERROR)
{
RNG_RandomUpdate(path, strlen(path));
// path info
rc = DosQueryPathInfo(path, FIL_STANDARD, &fstatus, sizeof(fstatus));
if (rc == NO_ERROR)
{
RNG_RandomUpdate(&fstatus, sizeof(fstatus));
}
}
/* file system info */
rc = DosQueryFSInfo(0, FSIL_ALLOC, &fsallocate, sizeof(fsallocate));
if (rc == NO_ERROR)
{
RNG_RandomUpdate(&fsallocate, sizeof(fsallocate));
}
/* drive info */
rc = DosQueryCurrentDisk(&defaultdrive, &logicaldrives);
if (rc == NO_ERROR)
{
RNG_RandomUpdate(&defaultdrive, sizeof(defaultdrive));
RNG_RandomUpdate(&logicaldrives, sizeof(logicaldrives));
}
/* system info */
rc = DosQuerySysInfo(QSV_MS_COUNT, QSV_MS_COUNT, &counter, sizeof(counter));
if (rc == NO_ERROR)
{
RNG_RandomUpdate(&counter, sizeof(counter));
}
/* more noise */
nBytes = RNG_GetNoise(buffer, sizeof(buffer));
RNG_RandomUpdate(buffer, nBytes);
}
void RNG_FileForRNG(char *filename)
{
struct stat stat_buf;
unsigned char buffer[1024];
FILE *file = 0;
int nBytes = 0;
static int totalFileBytes = 0;
if (stat((char *)filename, &stat_buf) < 0)
return;
RNG_RandomUpdate((unsigned char*)&stat_buf, sizeof(stat_buf));
file = fopen((char *)filename, "r");
if (file != NULL)
{
for (;;)
{
size_t bytes = fread(buffer, 1, sizeof(buffer), file);
if (bytes == 0)
break;
RNG_RandomUpdate(buffer, bytes);
totalFileBytes += bytes;
if (totalFileBytes > 250000)
break;
}
fclose(file);
}
nBytes = RNG_GetNoise(buffer, 20);
RNG_RandomUpdate(buffer, nBytes);
}
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