2012-11-27 21:40:46 -08:00
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/*
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Data generators for fuzzing test data in a reproducible way.
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*/
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#include "SDL_config.h"
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <float.h>
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#include "SDL_test.h"
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/**
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*Counter for fuzzer invocations
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*/
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2012-12-15 21:50:17 -08:00
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static int fuzzerInvocationCounter = 0;
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2012-11-27 21:40:46 -08:00
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/**
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* Context for shared random number generator
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*/
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static SDLTest_RandomContext rndContext;
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/*
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* Note: doxygen documentation markup for functions is in the header file.
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*/
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void
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SDLTest_FuzzerInit(Uint64 execKey)
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{
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2012-12-15 21:50:17 -08:00
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Uint32 a = (execKey >> 32) & 0x00000000FFFFFFFF;
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2012-11-27 21:40:46 -08:00
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Uint32 b = execKey & 0x00000000FFFFFFFF;
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2012-12-15 21:50:17 -08:00
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SDL_memset((void *)&rndContext, 0, sizeof(SDLTest_RandomContext));
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2012-11-27 21:40:46 -08:00
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SDLTest_RandomInit(&rndContext, a, b);
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2012-12-15 21:50:17 -08:00
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fuzzerInvocationCounter = 0;
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2012-11-27 21:40:46 -08:00
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}
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int
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2012-12-14 23:05:34 -08:00
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SDLTest_GetFuzzerInvocationCount()
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2012-11-27 21:40:46 -08:00
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{
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return fuzzerInvocationCounter;
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}
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Uint8
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SDLTest_RandomUint8()
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{
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fuzzerInvocationCounter++;
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return (Uint8) SDLTest_RandomInt(&rndContext) & 0x000000FF;
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}
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Sint8
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SDLTest_RandomSint8()
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{
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fuzzerInvocationCounter++;
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return (Sint8) SDLTest_RandomInt(&rndContext) & 0x000000FF;
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}
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Uint16
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SDLTest_RandomUint16()
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{
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fuzzerInvocationCounter++;
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return (Uint16) SDLTest_RandomInt(&rndContext) & 0x0000FFFF;
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}
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Sint16
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SDLTest_RandomSint16()
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{
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fuzzerInvocationCounter++;
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return (Sint16) SDLTest_RandomInt(&rndContext) & 0x0000FFFF;
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}
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Sint32
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SDLTest_RandomSint32()
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{
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fuzzerInvocationCounter++;
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return (Sint32) SDLTest_RandomInt(&rndContext);
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}
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Uint32
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SDLTest_RandomUint32()
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{
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fuzzerInvocationCounter++;
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return (Uint32) SDLTest_RandomInt(&rndContext);
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}
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Uint64
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SDLTest_RandomUint64()
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{
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2012-12-22 16:06:55 -08:00
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Uint64 value = 0;
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Uint32 *vp = (void *)&value;
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2012-11-27 21:40:46 -08:00
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fuzzerInvocationCounter++;
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vp[0] = SDLTest_RandomSint32();
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vp[1] = SDLTest_RandomSint32();
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return value;
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}
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Sint64
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SDLTest_RandomSint64()
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{
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2012-12-22 16:06:55 -08:00
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Uint64 value = 0;
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Uint32 *vp = (void *)&value;
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2012-11-27 21:40:46 -08:00
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fuzzerInvocationCounter++;
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vp[0] = SDLTest_RandomSint32();
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vp[1] = SDLTest_RandomSint32();
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return value;
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}
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Sint32
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SDLTest_RandomIntegerInRange(Sint32 pMin, Sint32 pMax)
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{
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Sint64 min = pMin;
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Sint64 max = pMax;
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Sint64 temp;
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Sint64 number;
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if(pMin > pMax) {
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temp = min;
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min = max;
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max = temp;
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} else if(pMin == pMax) {
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return (Sint32)min;
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}
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number = SDLTest_RandomUint32(); // invocation count increment in there
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return (Sint32)((number % ((max + 1) - min)) + min);
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}
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/*!
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* Generates boundary values between the given boundaries.
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* Boundary values are inclusive. See the examples below.
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* If boundary2 < boundary1, the values are swapped.
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* If boundary1 == boundary2, value of boundary1 will be returned
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*
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* Generating boundary values for Uint8:
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* BoundaryValues(sizeof(Uint8), 10, 20, True) -> [10,11,19,20]
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* BoundaryValues(sizeof(Uint8), 10, 20, False) -> [9,21]
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* BoundaryValues(sizeof(Uint8), 0, 15, True) -> [0, 1, 14, 15]
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* BoundaryValues(sizeof(Uint8), 0, 15, False) -> [16]
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* BoundaryValues(sizeof(Uint8), 0, 255, False) -> NULL
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*
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* Generator works the same for other types of unsigned integers.
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*
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* Note: outBuffer will be allocated and needs to be freed later.
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* If outbuffer != NULL, it'll be freed.
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*
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* \param maxValue The biggest value that is acceptable for this data type.
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* For instance, for Uint8 -> 255, Uint16 -> 65536 etc.
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* \param pBoundary1 defines lower boundary
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* \param pBoundary2 defines upper boundary
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* \param validDomain Generate only for valid domain (for the data type)
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*
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* \param outBuffer The generated boundary values are put here
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*
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* \returns Returns the number of elements in outBuffer or -1 in case of error
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*/
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Uint32
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SDLTest_GenerateUnsignedBoundaryValues(const Uint64 maxValue,
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Uint64 pBoundary1, Uint64 pBoundary2, SDL_bool validDomain,
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Uint64 *outBuffer)
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{
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Uint64 boundary1 = pBoundary1, boundary2 = pBoundary2;
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Uint64 temp;
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Uint64 tempBuf[4];
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int index;
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if(outBuffer != NULL) {
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SDL_free(outBuffer);
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}
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if(boundary1 > boundary2) {
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temp = boundary1;
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boundary1 = boundary2;
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boundary2 = temp;
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}
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index = 0;
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if(boundary1 == boundary2) {
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tempBuf[index++] = boundary1;
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}
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else if(validDomain) {
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tempBuf[index++] = boundary1;
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if(boundary1 < UINT64_MAX)
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tempBuf[index++] = boundary1 + 1;
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tempBuf[index++] = boundary2 - 1;
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tempBuf[index++] = boundary2;
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}
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else {
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if(boundary1 > 0) {
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tempBuf[index++] = boundary1 - 1;
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}
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if(boundary2 < maxValue && boundary2 < UINT64_MAX) {
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tempBuf[index++] = boundary2 + 1;
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}
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}
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if(index == 0) {
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// There are no valid boundaries
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return 0;
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}
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// Create the return buffer
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outBuffer = (Uint64 *)SDL_malloc(index * sizeof(Uint64));
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if(outBuffer == NULL) {
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return 0;
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}
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SDL_memcpy(outBuffer, tempBuf, index * sizeof(Uint64));
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return index;
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}
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Uint8
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SDLTest_RandomUint8BoundaryValue(Uint8 boundary1, Uint8 boundary2, SDL_bool validDomain)
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{
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Uint64 *buffer = NULL;
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Uint32 size;
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Uint32 index;
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Uint8 retVal;
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// max value for Uint8
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const Uint64 maxValue = UINT8_MAX;
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size = SDLTest_GenerateUnsignedBoundaryValues(maxValue,
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(Uint64) boundary1, (Uint64) boundary2,
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validDomain, buffer);
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2012-12-01 23:30:53 -08:00
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if (buffer == NULL || size == 0) {
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2012-11-27 21:40:46 -08:00
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return 0;
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}
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index = SDLTest_RandomSint32() % size;
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retVal = (Uint8)buffer[index];
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SDL_free(buffer);
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fuzzerInvocationCounter++;
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return retVal;
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}
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Uint16
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SDLTest_RandomUint16BoundaryValue(Uint16 boundary1, Uint16 boundary2, SDL_bool validDomain)
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{
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Uint64 *buffer = NULL;
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Uint32 size;
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Uint32 index;
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Uint16 retVal;
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// max value for Uint16
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const Uint64 maxValue = UINT16_MAX;
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size = SDLTest_GenerateUnsignedBoundaryValues(maxValue,
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(Uint64) boundary1, (Uint64) boundary2,
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validDomain, buffer);
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2012-12-01 23:30:53 -08:00
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if (buffer == NULL || size == 0) {
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2012-11-27 21:40:46 -08:00
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return 0;
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}
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index = SDLTest_RandomSint32() % size;
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retVal = (Uint16) buffer[index];
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SDL_free(buffer);
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fuzzerInvocationCounter++;
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return retVal;
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}
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Uint32
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SDLTest_RandomUint32BoundaryValue(Uint32 boundary1, Uint32 boundary2, SDL_bool validDomain)
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{
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Uint64 *buffer = NULL;
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Uint32 size;
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Uint32 index;
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Uint32 retVal;
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// max value for Uint32
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const Uint64 maxValue = UINT32_MAX;
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size = SDLTest_GenerateUnsignedBoundaryValues(maxValue,
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(Uint64) boundary1, (Uint64) boundary2,
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validDomain, buffer);
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2012-12-01 23:30:53 -08:00
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if (buffer == NULL || size == 0) {
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2012-11-27 21:40:46 -08:00
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return 0;
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}
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index = SDLTest_RandomSint32() % size;
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retVal = (Uint32) buffer[index];
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SDL_free(buffer);
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fuzzerInvocationCounter++;
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return retVal;
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}
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Uint64
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SDLTest_RandomUint64BoundaryValue(Uint64 boundary1, Uint64 boundary2, SDL_bool validDomain)
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{
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Uint64 *buffer = NULL;
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Uint32 size;
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Uint32 index;
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Uint64 retVal;
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// max value for Uint64
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const Uint64 maxValue = UINT64_MAX;
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size = SDLTest_GenerateUnsignedBoundaryValues(maxValue,
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(Uint64) boundary1, (Uint64) boundary2,
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validDomain, buffer);
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2012-12-01 23:30:53 -08:00
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if (buffer == NULL || size == 0) {
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2012-11-27 21:40:46 -08:00
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return 0;
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}
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index = SDLTest_RandomSint32() % size;
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retVal = (Uint64) buffer[index];
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SDL_free(buffer);
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fuzzerInvocationCounter++;
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return retVal;
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}
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/*!
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* Generates boundary values between the given boundaries.
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* Boundary values are inclusive. See the examples below.
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* If boundary2 < boundary1, the values are swapped.
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* If boundary1 == boundary2, value of boundary1 will be returned
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*
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* Generating boundary values for Sint8:
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* SignedBoundaryValues(sizeof(Sint8), -10, 20, True) -> [-11,-10,19,20]
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* SignedBoundaryValues(sizeof(Sint8), -10, 20, False) -> [-11,21]
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* SignedBoundaryValues(sizeof(Sint8), -30, -15, True) -> [-30, -29, -16, -15]
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* SignedBoundaryValues(sizeof(Sint8), -128, 15, False) -> [16]
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* SignedBoundaryValues(sizeof(Sint8), -128, 127, False) -> NULL
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*
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* Generator works the same for other types of signed integers.
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*
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* Note: outBuffer will be allocated and needs to be freed later.
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* If outbuffer != NULL, it'll be freed.
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*
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*
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* \param minValue The smallest value that is acceptable for this data type.
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* For instance, for Uint8 -> -128, Uint16 -> -32,768 etc.
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* \param maxValue The biggest value that is acceptable for this data type.
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* For instance, for Uint8 -> 127, Uint16 -> 32767 etc.
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* \param pBoundary1 defines lower boundary
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|
* \param pBoundary2 defines upper boundary
|
|
|
|
* \param validDomain Generate only for valid domain (for the data type)
|
|
|
|
*
|
|
|
|
* \param outBuffer The generated boundary values are put here
|
|
|
|
*
|
|
|
|
* \returns Returns the number of elements in outBuffer or -1 in case of error
|
|
|
|
*/
|
|
|
|
Uint32
|
|
|
|
SDLTest_GenerateSignedBoundaryValues(const Sint64 minValue, const Sint64 maxValue,
|
|
|
|
Sint64 pBoundary1, Sint64 pBoundary2, SDL_bool validDomain,
|
|
|
|
Sint64 *outBuffer)
|
|
|
|
{
|
|
|
|
int index;
|
|
|
|
Sint64 tempBuf[4];
|
|
|
|
Sint64 boundary1 = pBoundary1, boundary2 = pBoundary2;
|
|
|
|
|
|
|
|
if(outBuffer != NULL) {
|
|
|
|
SDL_free(outBuffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
if(boundary1 > boundary2) {
|
|
|
|
Sint64 temp = boundary1;
|
|
|
|
boundary1 = boundary2;
|
|
|
|
boundary2 = temp;
|
|
|
|
}
|
|
|
|
|
|
|
|
index = 0;
|
|
|
|
if(boundary1 == boundary2) {
|
|
|
|
tempBuf[index++] = boundary1;
|
|
|
|
}
|
|
|
|
else if(validDomain) {
|
|
|
|
tempBuf[index++] = boundary1;
|
|
|
|
|
|
|
|
if(boundary1 < LLONG_MAX)
|
|
|
|
tempBuf[index++] = boundary1 + 1;
|
|
|
|
|
|
|
|
if(boundary2 > LLONG_MIN)
|
|
|
|
tempBuf[index++] = boundary2 - 1;
|
|
|
|
|
|
|
|
tempBuf[index++] = boundary2;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if(boundary1 > minValue && boundary1 > LLONG_MIN) {
|
|
|
|
tempBuf[index++] = boundary1 - 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(boundary2 < maxValue && boundary2 < UINT64_MAX) {
|
|
|
|
tempBuf[index++] = boundary2 + 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(index == 0) {
|
|
|
|
// There are no valid boundaries
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Create the return buffer
|
|
|
|
outBuffer = (Sint64 *)SDL_malloc(index * sizeof(Sint64));
|
|
|
|
if(outBuffer == NULL) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
SDL_memcpy((void *)outBuffer, (void *)tempBuf, index * sizeof(Sint64));
|
|
|
|
|
|
|
|
return (Uint32)index;
|
|
|
|
}
|
|
|
|
|
|
|
|
Sint8
|
|
|
|
SDLTest_RandomSint8BoundaryValue(Sint8 boundary1, Sint8 boundary2, SDL_bool validDomain)
|
|
|
|
{
|
|
|
|
// min & max values for Sint8
|
|
|
|
const Sint64 maxValue = CHAR_MAX;
|
|
|
|
const Sint64 minValue = CHAR_MIN;
|
|
|
|
|
|
|
|
Sint64 *buffer = NULL;
|
|
|
|
Uint32 size;
|
|
|
|
Uint32 index;
|
|
|
|
Sint8 retVal;
|
|
|
|
|
|
|
|
size = SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
|
|
|
|
(Sint64) boundary1, (Sint64) boundary2,
|
|
|
|
validDomain, buffer);
|
2012-12-01 23:30:53 -08:00
|
|
|
if (buffer == NULL || size == 0) {
|
2012-11-27 21:40:46 -08:00
|
|
|
return CHAR_MIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
index = SDLTest_RandomSint32() % size;
|
|
|
|
retVal = (Sint8) buffer[index];
|
|
|
|
|
|
|
|
SDL_free(buffer);
|
|
|
|
|
|
|
|
fuzzerInvocationCounter++;
|
|
|
|
|
|
|
|
return retVal;
|
|
|
|
}
|
|
|
|
|
|
|
|
Sint16
|
|
|
|
SDLTest_RandomSint16BoundaryValue(Sint16 boundary1, Sint16 boundary2, SDL_bool validDomain)
|
|
|
|
{
|
|
|
|
// min & max values for Sint16
|
|
|
|
const Sint64 maxValue = SHRT_MAX;
|
|
|
|
const Sint64 minValue = SHRT_MIN;
|
|
|
|
Sint64 *buffer = NULL;
|
|
|
|
Uint32 size;
|
|
|
|
Uint32 index;
|
|
|
|
Sint16 retVal;
|
|
|
|
|
|
|
|
size = SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
|
|
|
|
(Sint64) boundary1, (Sint64) boundary2,
|
|
|
|
validDomain, buffer);
|
2012-12-01 23:30:53 -08:00
|
|
|
if (buffer == NULL || size == 0) {
|
2012-11-27 21:40:46 -08:00
|
|
|
return SHRT_MIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
index = SDLTest_RandomSint32() % size;
|
|
|
|
retVal = (Sint16) buffer[index];
|
|
|
|
|
|
|
|
SDL_free(buffer);
|
|
|
|
|
|
|
|
fuzzerInvocationCounter++;
|
|
|
|
|
|
|
|
return retVal;
|
|
|
|
}
|
|
|
|
|
|
|
|
Sint32
|
|
|
|
SDLTest_RandomSint32BoundaryValue(Sint32 boundary1, Sint32 boundary2, SDL_bool validDomain)
|
|
|
|
{
|
|
|
|
// min & max values for Sint32
|
|
|
|
const Sint64 maxValue = INT_MAX;
|
|
|
|
const Sint64 minValue = INT_MIN;
|
|
|
|
|
|
|
|
Sint64 *buffer = NULL;
|
|
|
|
Uint32 size;
|
|
|
|
Uint32 index;
|
|
|
|
Sint32 retVal;
|
|
|
|
|
|
|
|
size = SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
|
|
|
|
(Sint64) boundary1, (Sint64) boundary2,
|
|
|
|
validDomain, buffer);
|
2012-12-01 23:30:53 -08:00
|
|
|
if (buffer == NULL || size == 0) {
|
2012-11-27 21:40:46 -08:00
|
|
|
return INT_MIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
index = SDLTest_RandomSint32() % size;
|
|
|
|
retVal = (Sint32) buffer[index];
|
|
|
|
|
|
|
|
SDL_free(buffer);
|
|
|
|
|
|
|
|
fuzzerInvocationCounter++;
|
|
|
|
|
|
|
|
return retVal;
|
|
|
|
}
|
|
|
|
|
|
|
|
Sint64
|
|
|
|
SDLTest_RandomSint64BoundaryValue(Sint64 boundary1, Sint64 boundary2, SDL_bool validDomain)
|
|
|
|
{
|
|
|
|
Sint64 *buffer = NULL;
|
|
|
|
Uint32 size;
|
|
|
|
Uint32 index;
|
|
|
|
Sint64 retVal;
|
|
|
|
|
|
|
|
// min & max values for Sint64
|
|
|
|
const Sint64 maxValue = LLONG_MAX;
|
|
|
|
const Sint64 minValue = LLONG_MIN;
|
|
|
|
|
|
|
|
size = SDLTest_GenerateSignedBoundaryValues(minValue, maxValue,
|
|
|
|
(Sint64) boundary1, (Sint64) boundary2,
|
|
|
|
validDomain, buffer);
|
2012-12-01 23:30:53 -08:00
|
|
|
if (buffer == NULL || size == 0) {
|
2012-11-27 21:40:46 -08:00
|
|
|
return LLONG_MIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
index = SDLTest_RandomSint32() % size;
|
|
|
|
retVal = (Sint64) buffer[index];
|
|
|
|
|
|
|
|
SDL_free(buffer);
|
|
|
|
|
|
|
|
fuzzerInvocationCounter++;
|
|
|
|
|
|
|
|
return retVal;
|
|
|
|
}
|
|
|
|
|
|
|
|
float
|
|
|
|
SDLTest_RandomUnitFloat()
|
|
|
|
{
|
|
|
|
return (float) SDLTest_RandomUint32() / UINT_MAX;
|
|
|
|
}
|
|
|
|
|
|
|
|
float
|
|
|
|
SDLTest_RandomFloat()
|
|
|
|
{
|
|
|
|
return (float) (FLT_MIN + SDLTest_RandomUnitDouble() * (FLT_MAX - FLT_MIN));
|
|
|
|
}
|
|
|
|
|
|
|
|
double
|
|
|
|
SDLTest_RandomUnitDouble()
|
|
|
|
{
|
|
|
|
return (double) (SDLTest_RandomUint64() >> 11) * (1.0/9007199254740992.0);
|
|
|
|
}
|
|
|
|
|
|
|
|
double
|
|
|
|
SDLTest_RandomDouble()
|
|
|
|
{
|
|
|
|
double r = 0.0;
|
|
|
|
double s = 1.0;
|
|
|
|
do {
|
|
|
|
s /= UINT_MAX + 1.0;
|
|
|
|
r += (double)SDLTest_RandomInt(&rndContext) * s;
|
|
|
|
} while (s > DBL_EPSILON);
|
|
|
|
|
|
|
|
fuzzerInvocationCounter++;
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
char *
|
|
|
|
SDLTest_RandomAsciiString()
|
|
|
|
{
|
|
|
|
// note: fuzzerInvocationCounter is increment in the RandomAsciiStringWithMaximumLenght
|
|
|
|
return SDLTest_RandomAsciiStringWithMaximumLength(255);
|
|
|
|
}
|
|
|
|
|
|
|
|
char *
|
|
|
|
SDLTest_RandomAsciiStringWithMaximumLength(int maxSize)
|
|
|
|
{
|
|
|
|
int size;
|
|
|
|
char *string;
|
|
|
|
int counter;
|
|
|
|
|
|
|
|
fuzzerInvocationCounter++;
|
|
|
|
|
|
|
|
if(maxSize < 1) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = (SDLTest_RandomUint32() % (maxSize + 1)) + 1;
|
|
|
|
string = (char *)SDL_malloc(size * sizeof(char));
|
|
|
|
if (string==NULL) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
for(counter = 0; counter < size; ++counter) {
|
2012-12-16 21:59:29 -08:00
|
|
|
string[counter] = (char)SDLTest_RandomIntegerInRange(32, 126);
|
2012-11-27 21:40:46 -08:00
|
|
|
}
|
|
|
|
|
|
|
|
string[counter] = '\0';
|
|
|
|
|
|
|
|
return string;
|
|
|
|
}
|