Function writeFileIfNeeded

keyhunt_legacy.cpp:6826–6916

}

void writeFileIfNeeded(const char *fileName)	{
	//printf("[D] FLAGSAVEREADFILE %i, FLAGREADEDFILE1 %i\n",FLAGSAVEREADFILE,FLAGREADEDFILE1);
	if(FLAGSAVEREADFILE && !FLAGREADEDFILE1)	{
		FILE *fileDescriptor;
		char fileBloomName[30];
		uint8_t checksum[32],hexPrefix[9];
		char dataChecksum[32],bloomChecksum[32];
		size_t bytesWrite;
		uint64_t dataSize;
		if(!sha256_file((const char*)fileName,checksum)){
			fprintf(stderr,"[E] sha256_file error line %i\n",__LINE__ - 1);
			exit(EXIT_FAILURE);
		}
		tohex_dst((char*)checksum,4,(char*)hexPrefix); // we save the prefix (last fourt bytes) hexadecimal value
		snprintf(fileBloomName,30,"data_%s.dat",hexPrefix);
		fileDescriptor = fopen(fileBloomName,"wb");
		dataSize = N * (sizeof(struct address_value));
		printf("[D] size data %li\n",dataSize);
		if(fileDescriptor != NULL)	{
			printf("[+] Writing file %s ",fileBloomName);
			

			//calculate bloom checksum
			//write bloom checksum (expected value to be checked)
			//write bloom filter structure
			//write bloom filter data


			//calculate dataChecksum
			//write data checksum (expected value to be checked)
			//write data size
			//write data
			
			
			

			sha256((uint8_t*)bloom.bf,bloom.bytes,(uint8_t*)bloomChecksum);
			printf(".");
			bytesWrite = fwrite(bloomChecksum,1,32,fileDescriptor);
			if(bytesWrite != 32)	{
				fprintf(stderr,"[E] Errore writing file, code line %i\n",__LINE__ - 2);
				exit(EXIT_FAILURE);
			}
			printf(".");
			
			bytesWrite = fwrite(&bloom,1,sizeof(struct bloom),fileDescriptor);
			if(bytesWrite != sizeof(struct bloom))	{
				fprintf(stderr,"[E] Error writing file, code line %i\n",__LINE__ - 2);
				exit(EXIT_FAILURE);
			}
			printf(".");
			
			bytesWrite = fwrite(bloom.bf,1,bloom.bytes,fileDescriptor);
			if(bytesWrite != bloom.bytes)	{
				fprintf(stderr,"[E] Error writing file, code line %i\n",__LINE__ - 2);
				fclose(fileDescriptor);
				exit(EXIT_FAILURE);
			}