diff options
Diffstat (limited to 'security/nss/lib/util/mac_rand.c')
| -rw-r--r-- | security/nss/lib/util/mac_rand.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/security/nss/lib/util/mac_rand.c b/security/nss/lib/util/mac_rand.c new file mode 100644 index 000000000..c8596a9f0 --- /dev/null +++ b/security/nss/lib/util/mac_rand.c @@ -0,0 +1,280 @@ +/* + * 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. + */ + +#ifdef notdef +#include "xp_core.h" +#include "xp_file.h" +#endif +#include "secrng.h" +#include "mcom_db.h" +#ifdef XP_MAC +#include <Events.h> +#include <OSUtils.h> +#include <QDOffscreen.h> +#include <PPCToolbox.h> +#include <Processes.h> +#include <LowMem.h> + +/* Static prototypes */ +static size_t CopyLowBits(void *dst, size_t dstlen, void *src, size_t srclen); +void FE_ReadScreen(); + +static size_t CopyLowBits(void *dst, size_t dstlen, void *src, size_t srclen) +{ + union endianness { + int32 i; + char c[4]; + } u; + + if (srclen <= dstlen) { + memcpy(dst, src, srclen); + return srclen; + } + u.i = 0x01020304; + if (u.c[0] == 0x01) { + /* big-endian case */ + memcpy(dst, (char*)src + (srclen - dstlen), dstlen); + } else { + /* little-endian case */ + memcpy(dst, src, dstlen); + } + return dstlen; +} + +size_t RNG_GetNoise(void *buf, size_t maxbytes) +{ + uint32 c = TickCount(); + return CopyLowBits(buf, maxbytes, &c, sizeof(c)); +} + +void RNG_FileForRNG(char *filename) +{ + unsigned char buffer[BUFSIZ]; + size_t bytes; +#ifdef notdef /*sigh*/ + XP_File file; + unsigned long totalFileBytes = 0; + + if (filename == NULL) /* For now, read in global history if filename is null */ + file = XP_FileOpen(NULL, xpGlobalHistory,XP_FILE_READ_BIN); + else + file = XP_FileOpen(NULL, xpURL,XP_FILE_READ_BIN); + if (file != NULL) { + for (;;) { + bytes = XP_FileRead(buffer, sizeof(buffer), file); + if (bytes == 0) break; + RNG_RandomUpdate( buffer, bytes); + totalFileBytes += bytes; + if (totalFileBytes > 100*1024) break; /* No more than 100 K */ + } + XP_FileClose(file); + } +#endif + /* + * Pass yet another snapshot of our highest resolution clock into + * the hash function. + */ + bytes = RNG_GetNoise(buffer, sizeof(buffer)); + RNG_RandomUpdate(buffer, sizeof(buffer)); +} + +void RNG_SystemInfoForRNG() +{ +/* Time */ + { + unsigned long sec; + size_t bytes; + GetDateTime(&sec); /* Current time since 1970 */ + RNG_RandomUpdate( &sec, sizeof(sec)); + bytes = RNG_GetNoise(&sec, sizeof(sec)); + RNG_RandomUpdate(&sec, bytes); + } +/* User specific variables */ + { + MachineLocation loc; + ReadLocation(&loc); + RNG_RandomUpdate( &loc, sizeof(loc)); + } +/* User name */ + { + unsigned long userRef; + Str32 userName; + GetDefaultUser(&userRef, userName); + RNG_RandomUpdate( &userRef, sizeof(userRef)); + RNG_RandomUpdate( userName, sizeof(userName)); + } +/* Mouse location */ + { + Point mouseLoc; + GetMouse(&mouseLoc); + RNG_RandomUpdate( &mouseLoc, sizeof(mouseLoc)); + } +/* Keyboard time threshold */ + { + SInt16 keyTresh = LMGetKeyThresh(); + RNG_RandomUpdate( &keyTresh, sizeof(keyTresh)); + } +/* Last key pressed */ + { + SInt8 keyLast; + keyLast = LMGetKbdLast(); + RNG_RandomUpdate( &keyLast, sizeof(keyLast)); + } +/* Volume */ + { + UInt8 volume = LMGetSdVolume(); + RNG_RandomUpdate( &volume, sizeof(volume)); + } +/* Current directory */ + { + SInt32 dir = LMGetCurDirStore(); + RNG_RandomUpdate( &dir, sizeof(dir)); + } +/* Process information about all the processes in the machine */ + { + ProcessSerialNumber process; + ProcessInfoRec pi; + + process.highLongOfPSN = process.lowLongOfPSN = kNoProcess; + + while (GetNextProcess(&process) == noErr) + { + FSSpec fileSpec; + pi.processInfoLength = sizeof(ProcessInfoRec); + pi.processName = NULL; + pi.processAppSpec = &fileSpec; + GetProcessInformation(&process, &pi); + RNG_RandomUpdate( &pi, sizeof(pi)); + RNG_RandomUpdate( &fileSpec, sizeof(fileSpec)); + } + } + +/* Heap */ + { + THz zone = LMGetTheZone(); + RNG_RandomUpdate( &zone, sizeof(zone)); + } + +/* Screen */ + { + GDHandle h = LMGetMainDevice(); /* GDHandle is **GDevice */ + RNG_RandomUpdate( *h, sizeof(GDevice)); + } +/* Scrap size */ + { + SInt32 scrapSize = LMGetScrapSize(); + RNG_RandomUpdate( &scrapSize, sizeof(scrapSize)); + } +/* Scrap count */ + { + SInt16 scrapCount = LMGetScrapCount(); + RNG_RandomUpdate( &scrapCount, sizeof(scrapCount)); + } +/* File stuff, last modified, etc. */ + { + HParamBlockRec pb; + GetVolParmsInfoBuffer volInfo; + pb.ioParam.ioVRefNum = 0; + pb.ioParam.ioNamePtr = nil; + pb.ioParam.ioBuffer = (Ptr) &volInfo; + pb.ioParam.ioReqCount = sizeof(volInfo); + PBHGetVolParmsSync(&pb); + RNG_RandomUpdate( &volInfo, sizeof(volInfo)); + } +/* Event queue */ + { + EvQElPtr eventQ; + for (eventQ = (EvQElPtr) LMGetEventQueue()->qHead; + eventQ; + eventQ = (EvQElPtr)eventQ->qLink) + RNG_RandomUpdate( &eventQ->evtQWhat, sizeof(EventRecord)); + } + FE_ReadScreen(); + RNG_FileForRNG(NULL); +} + +void FE_ReadScreen() +{ + UInt16 coords[4]; + PixMapHandle pmap; + GDHandle gh; + UInt16 screenHeight; + UInt16 screenWidth; /* just what they say */ + UInt32 bytesToRead; /* number of bytes we're giving */ + UInt32 offset; /* offset into the graphics buffer */ + UInt16 rowBytes; + UInt32 rowsToRead; + float bytesPerPixel; /* dependent on buffer depth */ + Ptr p; /* temporary */ + UInt16 x, y, w, h; + + gh = LMGetMainDevice(); + if ( !gh ) + return; + pmap = (**gh).gdPMap; + if ( !pmap ) + return; + + RNG_GenerateGlobalRandomBytes( coords, sizeof( coords ) ); + + /* make x and y inside the screen rect */ + screenHeight = (**pmap).bounds.bottom - (**pmap).bounds.top; + screenWidth = (**pmap).bounds.right - (**pmap).bounds.left; + x = coords[0] % screenWidth; + y = coords[1] % screenHeight; + w = ( coords[2] & 0x7F ) | 0x40; /* Make sure that w is in the range 64..128 */ + h = ( coords[3] & 0x7F ) | 0x40; /* same for h */ + + bytesPerPixel = (**pmap).pixelSize / 8; + rowBytes = (**pmap).rowBytes & 0x7FFF; + + /* starting address */ + offset = ( rowBytes * y ) + (UInt32)( (float)x * bytesPerPixel ); + + /* don't read past the end of the pixmap's rowbytes */ + bytesToRead = MIN( (UInt32)( w * bytesPerPixel ), + (UInt32)( rowBytes - ( x * bytesPerPixel ) ) ); + + /* don't read past the end of the graphics device pixmap */ + rowsToRead = MIN( h, + ( screenHeight - y ) ); + + p = GetPixBaseAddr( pmap ) + offset; + + while ( rowsToRead-- ) + { + RNG_RandomUpdate( p, bytesToRead ); + p += rowBytes; + } +} +#endif |