145 lines
3 KiB
C
145 lines
3 KiB
C
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#include "../SDL_test.h"
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#include "fuzzer.h"
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//! context for test-specific random number generator
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RND_CTX rndContext3;
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int
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GenerateExecKey(CRC32_CTX crcContext, char *runSeed, char *suiteName,
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char *testName, int iterationNumber)
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{
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if(runSeed == NULL || suiteName == NULL ||
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testName == NULL || iterationNumber < 0) {
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fprintf(stderr, "Incorrect parameter given to GenerateExecKey function\n");
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return -1;
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}
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char iterationString[256];
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memset(iterationString, 0, sizeof(iterationString));
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snprintf(iterationString, sizeof(iterationString), "%d", iterationNumber);
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// combine the parameters
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const int runSeedLength = strlen(runSeed);
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const int suiteNameLength = strlen(suiteName);
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const int testNameLength = strlen(testName);
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const int iterationStringLength = strlen(iterationString);
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// size of the entire + 3 for slashes and + 1 for '\0'
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const int entireString = runSeedLength + suiteNameLength +
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testNameLength + iterationString + 3 + 1;
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int result = 0;
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/* Let's take a hash from the strings separately because
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* it's really slow to calculate md5 or crc32 for a really long string
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* like 'runSeed/testSuiteName/testName/iteration'
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*/
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MD5_CTX md5Context;
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utl_md5Init(&md5Context);
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utl_md5Update(&md5Context, runSeed, runSeedLength);
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utl_md5Update(&md5Context, suiteName, suiteNameLength);
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utl_md5Update(&md5Context, testName, testNameLength);
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utl_md5Update(&md5Context, iterationString, iterationStringLength);
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utl_md5Final(&md5Context);
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utl_crc32Calc(&crcContext, md5Context.digest, sizeof(md5Context.digest), &result);
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return abs(result); // makes sure that the key is positive
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}
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void
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InitFuzzer(const int execKey)
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{
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utl_randomInit(&rndContext3, globalExecKey, globalExecKey / 0xfafafafa);
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}
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void
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DeinitFuzzer()
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{
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}
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int
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RandomInteger()
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{
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return utl_randomInt(&rndContext3);
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}
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int
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RandomPositiveInteger()
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{
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return abs(utl_randomInt(&rndContext3));
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}
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int
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RandomIntegerInRange(int min, int max)
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{
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if(min > max || (min - max) == 0) {
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return -1; // Doesn't really make sense to return -1 on error?
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}
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int number = utl_randomInt(&rndContext3);
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number = abs(number);
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return (number % ((max + 1) - min)) + min;
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}
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int
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GenerateBoundaryValueForSize(const int size)
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{
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if(size < 0) {
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return -1;
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}
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const int adjustment = RandomIntegerInRange(-1, 1);
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int retValue = (1 << (RandomPositiveInteger() % size)) + adjustment;
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return retValue;
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}
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int
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RandomUint8BoundaryValue()
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{
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return GenerateBoundaryValueForSize(8);
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}
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int
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RandomInt8BoundaryValue()
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{
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int value = GenerateBoundaryValueForSize(8);
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return (RandomPositiveInteger() % 2 == 0 ? value : -value);
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}
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char *
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RandomAsciiString()
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{
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return RandomAsciiStringWithMaximumLength(255);
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}
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char *
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RandomAsciiStringWithMaximumLength(int maxSize)
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{
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if(maxSize < 0) {
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return NULL;
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}
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const int size = abs(RandomInteger) % maxSize;
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char *string = SDL_malloc(size * sizeof(size));
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int counter = 0;
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for( ; counter < size; ++counter) {
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char character = (char) RandomIntegerInRange(1, 127);
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string[counter] = character;
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}
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string[counter] = '\0';
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return string;
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}
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