mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-08-11 05:29:00 +00:00
342 lines
7.8 KiB
C
342 lines
7.8 KiB
C
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#define INCL_DOS
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#define INCL_DOSERRORS
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#include <os2.h>
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#include "secrng.h"
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#include "prerror.h"
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#include <stdlib.h>
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#include <time.h>
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#include <stdio.h>
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#include <sys/stat.h>
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static BOOL clockTickTime(unsigned long *phigh, unsigned long *plow)
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{
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APIRET rc = NO_ERROR;
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QWORD qword = {0,0};
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rc = DosTmrQueryTime(&qword);
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if (rc != NO_ERROR)
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return FALSE;
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*phigh = qword.ulHi;
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*plow = qword.ulLo;
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return TRUE;
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}
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size_t RNG_GetNoise(void *buf, size_t maxbuf)
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{
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unsigned long high = 0;
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unsigned long low = 0;
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clock_t val = 0;
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int n = 0;
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int nBytes = 0;
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time_t sTime;
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if (maxbuf <= 0)
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return 0;
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clockTickTime(&high, &low);
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/* get the maximally changing bits first */
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nBytes = sizeof(low) > maxbuf ? maxbuf : sizeof(low);
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memcpy(buf, &low, nBytes);
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n += nBytes;
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maxbuf -= nBytes;
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if (maxbuf <= 0)
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return n;
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nBytes = sizeof(high) > maxbuf ? maxbuf : sizeof(high);
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memcpy(((char *)buf) + n, &high, nBytes);
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n += nBytes;
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maxbuf -= nBytes;
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if (maxbuf <= 0)
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return n;
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/* get the number of milliseconds that have elapsed since application started */
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val = clock();
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nBytes = sizeof(val) > maxbuf ? maxbuf : sizeof(val);
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memcpy(((char *)buf) + n, &val, nBytes);
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n += nBytes;
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maxbuf -= nBytes;
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if (maxbuf <= 0)
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return n;
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/* get the time in seconds since midnight Jan 1, 1970 */
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time(&sTime);
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nBytes = sizeof(sTime) > maxbuf ? maxbuf : sizeof(sTime);
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memcpy(((char *)buf) + n, &sTime, nBytes);
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n += nBytes;
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return n;
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}
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static BOOL
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EnumSystemFiles(void (*func)(const char *))
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{
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APIRET rc;
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ULONG sysInfo = 0;
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char bootLetter[2];
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char sysDir[_MAX_PATH] = "";
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char filename[_MAX_PATH];
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HDIR hdir = HDIR_CREATE;
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ULONG numFiles = 1;
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FILEFINDBUF3 fileBuf = {0};
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ULONG buflen = sizeof(FILEFINDBUF3);
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if (DosQuerySysInfo(QSV_BOOT_DRIVE, QSV_BOOT_DRIVE, (PVOID)&sysInfo,
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sizeof(ULONG)) == NO_ERROR)
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{
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bootLetter[0] = sysInfo + 'A' -1;
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bootLetter[1] = '\0';
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strcpy(sysDir, bootLetter);
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strcpy(sysDir+1, ":\\OS2\\");
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strcpy( filename, sysDir );
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strcat( filename, "*.*" );
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}
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rc =DosFindFirst( filename, &hdir, FILE_NORMAL, &fileBuf, buflen,
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&numFiles, FIL_STANDARD );
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if( rc == NO_ERROR )
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{
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do {
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// pass the full pathname to the callback
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sprintf( filename, "%s%s", sysDir, fileBuf.achName );
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(*func)(filename);
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numFiles = 1;
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rc = DosFindNext( hdir, &fileBuf, buflen, &numFiles );
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if( rc != NO_ERROR && rc != ERROR_NO_MORE_FILES )
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printf( "DosFindNext errod code = %d\n", rc );
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} while ( rc == NO_ERROR );
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rc = DosFindClose(hdir);
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if( rc != NO_ERROR )
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printf( "DosFindClose error code = %d", rc );
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}
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else
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printf( "DosFindFirst error code = %d", rc );
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return TRUE;
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}
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static int dwNumFiles, dwReadEvery, dwFileToRead=0;
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static void
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CountFiles(const char *file)
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{
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dwNumFiles++;
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}
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static void
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ReadFiles(const char *file)
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{
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if ((dwNumFiles % dwReadEvery) == 0)
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RNG_FileForRNG(file);
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dwNumFiles++;
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}
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static void
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ReadSingleFile(const char *filename)
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{
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unsigned char buffer[1024];
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FILE *file;
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file = fopen((char *)filename, "rb");
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if (file != NULL) {
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while (fread(buffer, 1, sizeof(buffer), file) > 0)
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;
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fclose(file);
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}
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}
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static void
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ReadOneFile(const char *file)
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{
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if (dwNumFiles == dwFileToRead) {
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ReadSingleFile(file);
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}
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dwNumFiles++;
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}
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static void
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ReadSystemFiles(void)
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{
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// first count the number of files
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dwNumFiles = 0;
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if (!EnumSystemFiles(CountFiles))
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return;
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RNG_RandomUpdate(&dwNumFiles, sizeof(dwNumFiles));
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// now read 10 files
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if (dwNumFiles == 0)
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return;
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dwReadEvery = dwNumFiles / 10;
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if (dwReadEvery == 0)
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dwReadEvery = 1; // less than 10 files
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dwNumFiles = 0;
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EnumSystemFiles(ReadFiles);
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}
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void RNG_SystemInfoForRNG(void)
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{
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unsigned long *plong = 0;
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PTIB ptib;
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PPIB ppib;
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APIRET rc = NO_ERROR;
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DATETIME dt;
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COUNTRYCODE cc = {0};
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COUNTRYINFO ci = {0};
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unsigned long actual = 0;
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char path[_MAX_PATH]="";
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char fullpath[_MAX_PATH]="";
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unsigned long pathlength = sizeof(path);
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FSALLOCATE fsallocate;
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FILESTATUS3 fstatus;
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unsigned long defaultdrive = 0;
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unsigned long logicaldrives = 0;
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unsigned long sysInfo[QSV_MAX] = {0};
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char buffer[20];
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int nBytes = 0;
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nBytes = RNG_GetNoise(buffer, sizeof(buffer));
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RNG_RandomUpdate(buffer, nBytes);
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/* allocate memory and use address and memory */
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plong = (unsigned long *)malloc(sizeof(*plong));
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RNG_RandomUpdate(&plong, sizeof(plong));
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RNG_RandomUpdate(plong, sizeof(*plong));
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free(plong);
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/* process info */
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rc = DosGetInfoBlocks(&ptib, &ppib);
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(ptib, sizeof(*ptib));
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RNG_RandomUpdate(ppib, sizeof(*ppib));
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}
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/* time */
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rc = DosGetDateTime(&dt);
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(&dt, sizeof(dt));
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}
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/* country */
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rc = DosQueryCtryInfo(sizeof(ci), &cc, &ci, &actual);
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(&cc, sizeof(cc));
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RNG_RandomUpdate(&ci, sizeof(ci));
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RNG_RandomUpdate(&actual, sizeof(actual));
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}
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/* current directory */
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rc = DosQueryCurrentDir(0, path, &pathlength);
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strcat(fullpath, "\\");
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strcat(fullpath, path);
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(fullpath, strlen(fullpath));
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// path info
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rc = DosQueryPathInfo(fullpath, FIL_STANDARD, &fstatus, sizeof(fstatus));
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(&fstatus, sizeof(fstatus));
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}
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}
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/* file system info */
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rc = DosQueryFSInfo(0, FSIL_ALLOC, &fsallocate, sizeof(fsallocate));
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(&fsallocate, sizeof(fsallocate));
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}
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/* drive info */
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rc = DosQueryCurrentDisk(&defaultdrive, &logicaldrives);
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(&defaultdrive, sizeof(defaultdrive));
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RNG_RandomUpdate(&logicaldrives, sizeof(logicaldrives));
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}
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/* system info */
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rc = DosQuerySysInfo(1L, QSV_MAX, (PVOID)&sysInfo, sizeof(ULONG)*QSV_MAX);
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if (rc == NO_ERROR)
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{
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RNG_RandomUpdate(&sysInfo, sizeof(sysInfo));
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}
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// now let's do some files
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ReadSystemFiles();
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/* more noise */
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nBytes = RNG_GetNoise(buffer, sizeof(buffer));
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RNG_RandomUpdate(buffer, nBytes);
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}
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void RNG_FileForRNG(const char *filename)
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{
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struct stat stat_buf;
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unsigned char buffer[1024];
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FILE *file = 0;
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int nBytes = 0;
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static int totalFileBytes = 0;
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if (stat((char *)filename, &stat_buf) < 0)
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return;
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RNG_RandomUpdate((unsigned char*)&stat_buf, sizeof(stat_buf));
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file = fopen((char *)filename, "r");
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if (file != NULL)
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{
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for (;;)
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{
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size_t bytes = fread(buffer, 1, sizeof(buffer), file);
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if (bytes == 0)
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break;
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RNG_RandomUpdate(buffer, bytes);
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totalFileBytes += bytes;
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if (totalFileBytes > 250000)
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break;
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}
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fclose(file);
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}
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nBytes = RNG_GetNoise(buffer, 20);
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RNG_RandomUpdate(buffer, nBytes);
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}
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static void rng_systemJitter(void)
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{
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dwNumFiles = 0;
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EnumSystemFiles(ReadOneFile);
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dwFileToRead++;
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if (dwFileToRead >= dwNumFiles) {
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dwFileToRead = 0;
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}
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}
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size_t RNG_SystemRNG(void *dest, size_t maxLen)
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{
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return rng_systemFromNoise(dest,maxLen);
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}
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