C++ (Cpp) HashMD5 Examples

Example #1

File: HttpDownloader.cpp Project: jamerlan/pr-downloader

int CHttpDownloader::verifyAndGetNextPiece(CFile& file, IDownload* download)
{
	//verify file by md5 if pieces.size == 0
	if((download->pieces.empty()) && (download->hash!=NULL) && (download->hash->isSet())) {
		HashMD5 md5=HashMD5();
		file.Hash(md5);
		if (md5.compare(download->hash)) {
			LOG_INFO("md5 correct: %s", md5.toString().c_str());
			download->state=IDownload::STATE_FINISHED;
			showProcess(download, true);
			return -1;
		} else {
			LOG_ERROR("md5 sum missmatch %s %s", download->hash->toString().c_str(), md5.toString().c_str());
		}
	}

	HashSHA1 sha1=HashSHA1();
	unsigned alreadyDl=0;
	for(unsigned i=0; i<download->pieces.size(); i++ ) { //find first not downloaded piece
		showProcess(download, false);
		if (download->pieces[i].state==IDownload::STATE_FINISHED) {
			alreadyDl++;
			continue;
		} else if (download->pieces[i].state==IDownload::STATE_NONE) {
			if ((download->pieces[i].sha->isSet()) && (!file.IsNewFile())) { //reuse piece, if checksum is fine
				file.Hash(sha1, i);
//	LOG("bla %s %s", sha1.toString().c_str(), download.pieces[i].sha->toString().c_str());
				if (sha1.compare(download->pieces[i].sha)) {
//					LOG_DEBUG("piece %d has already correct checksum, reusing", i);
					download->pieces[i].state=IDownload::STATE_FINISHED;
					showProcess(download, true);
					alreadyDl++;
					continue;
				}
			}
			return i;
		}
	}
	if (!download->pieces.empty()) {
		download->state=IDownload::STATE_FINISHED;
		showProcess(download, true);
	}
	return -1;
}

Example #2

File: Contexte.cpp Project: jackcat13/TPCrypto

// fonction de hachage
// In: Clair c ----> Out: Empreinte
void Contexte::h(string c, unsigned char *d) {
    unsigned char *toCrypt = (unsigned char *) c.c_str();
    HashMD5(toCrypt, c.length(), d);
}

Example #3

File: Sdp.cpp Project: jamerlan/pr-downloader

bool CSdp::download()
{
	if (downloaded) //allow download only once of the same sdp
		return true;
	filename=fileSystem->getSpringDir() + PATH_DELIMITER+"packages"+PATH_DELIMITER;
	LOG_DEBUG("%s",filename.c_str());
	if (!fileSystem->directoryExists(filename)) {
		fileSystem->createSubdirs(filename);
	}
	int count=0;
	filename  += this->md5 + ".sdp";
	const std::string tmpFile = filename + ".tmp";
	std::list<FileData*> files;

	bool rename = false;
	if (!fileSystem->fileExists(filename)) { //.sdp isn't avaiable, download it
		IDownload dl(tmpFile);
		dl.addMirror(url + "/packages/" + this->md5 + ".sdp");
		httpDownload->download(&dl);
		fileSystem->parseSdp(tmpFile,files); //parse downloaded file
		rename = true;
	} else {
		fileSystem->parseSdp(filename,files); //parse downloaded file
	}

	std::list<FileData*>::iterator it;

	HashMD5 md5= HashMD5();
	FileData tmp=FileData();
	int i=0;
	for(it = files.begin(); it!=files.end(); ++it) { //check which file are available on local disk -> create list of files to download
		i++;
		md5.Set((*it)->md5, sizeof((*it)->md5));
		std::string file;
		fileSystem->getPoolFilename(md5.toString(), file);
		if (!fileSystem->fileExists(file)) { //add non-existing files to download list
			count++;
			(*it)->download=true;
		} else {
			(*it)->download=false;
		}
		if (i%10==0) {
			LOG_DEBUG("\r%d/%d checked",i,(int)files.size());
		}
	}
	LOG_DEBUG("\r%d/%d need to download %d files",i,(unsigned int)files.size(),count);

	std::string root = fileSystem->getSpringDir();
	root += PATH_DELIMITER;
	root += "pool";
	root += PATH_DELIMITER;
	if (!createPoolDirs(root)) {
		LOG_ERROR("Creating pool directories failed");
		count = 0;
	}
	if (count>0) {
		downloaded=downloadStream(this->url+"/streamer.cgi?"+this->md5,files);
		LOG_DEBUG("Sucessfully downloaded %d files: %s %s",count,shortname.c_str(),name.c_str());
	} else {
		LOG_DEBUG("Already downloaded: %s", shortname.c_str());
		downloaded=true;
	}

	for(it = files.begin(); it!=files.end(); ++it) { //free memory
		delete *it;
	}
	if ((rename) && (!fileSystem->Rename(tmpFile, filename))) {
		LOG_ERROR("Couldn't rename %s to %s", tmpFile.c_str(), filename.c_str());
	}
	return downloaded;
}