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;
}
// 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);
}
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;
}
