DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * 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 the Initial Developer are Copyright (C) 1994-2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#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>
#include <Scrap.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)
{
    UnsignedWide microTickCount;
    Microseconds(&microTickCount);
    return CopyLowBits(buf, maxbytes,  &microTickCount, sizeof(microTickCount));
}

void RNG_FileForRNG(const 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));
	}
#if !TARGET_CARBON
/* User name */
	{
		unsigned long userRef;
		Str32 userName;
		GetDefaultUser(&userRef, userName);
		RNG_RandomUpdate( &userRef, sizeof(userRef));
		RNG_RandomUpdate( userName, sizeof(userName));
	}
#endif
/* 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));
	}
#if !TARGET_CARBON
/* Current directory */
	{
		SInt32 dir = LMGetCurDirStore();
		RNG_RandomUpdate( &dir, sizeof(dir));
	}
#endif
/* 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));
		}
	}
	
#if !TARGET_CARBON
/* Heap */
	{
		THz zone = LMGetTheZone();
		RNG_RandomUpdate( &zone, sizeof(zone));
	}
#endif
	
/* Screen */
	{
		GDHandle h = GetMainDevice();		/* GDHandle is **GDevice */
		RNG_RandomUpdate( *h, sizeof(GDevice));
	}

#if !TARGET_CARBON
/* Scrap size */
	{
		SInt32 scrapSize = LMGetScrapSize();
		RNG_RandomUpdate( &scrapSize, sizeof(scrapSize));
	}
/* Scrap count */
	{
		SInt16 scrapCount = LMGetScrapCount();
		RNG_RandomUpdate( &scrapCount, sizeof(scrapCount));
	}
#else
	{
	    ScrapRef scrap;
        if (GetCurrentScrap(&scrap) == noErr) {
            UInt32 flavorCount;
            if (GetScrapFlavorCount(scrap, &flavorCount) == noErr) {
                ScrapFlavorInfo* flavorInfo = (ScrapFlavorInfo*) malloc(flavorCount * sizeof(ScrapFlavorInfo));
                if (flavorInfo != NULL) {
                    if (GetScrapFlavorInfoList(scrap, &flavorCount, flavorInfo) == noErr) {
                        UInt32 i;
                        RNG_RandomUpdate(&flavorCount, sizeof(flavorCount));
                        for (i = 0; i < flavorCount; ++i) {
                            Size flavorSize;
                            if (GetScrapFlavorSize(scrap, flavorInfo[i].flavorType, &flavorSize) == noErr)
                                RNG_RandomUpdate(&flavorSize, sizeof(flavorSize));
                        }
                    }
                    free(flavorInfo);
                }
            }
        }
    }
#endif
/*  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));
	}
#if !TARGET_CARBON
/* Event queue */
	{
		EvQElPtr		eventQ;
		for (eventQ = (EvQElPtr) LMGetEventQueue()->qHead; 
				eventQ; 
				eventQ = (EvQElPtr)eventQ->qLink)
			RNG_RandomUpdate( &eventQ->evtQWhat, sizeof(EventRecord));
	}
#endif
	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 = PR_MIN(	(UInt32)( w * bytesPerPixel ),
						(UInt32)( rowBytes - ( x * bytesPerPixel ) ) );

	/* don't read past the end of the graphics device pixmap */
	rowsToRead = PR_MIN(	h, 
						( screenHeight - y ) );
	
	p = GetPixBaseAddr( pmap ) + offset;
	
	while ( rowsToRead-- )
	{
		RNG_RandomUpdate( p, bytesToRead );
		p += rowBytes;
	}
}
#endif