Ejemplo n.º 1
0
void remoteServer::OnInterest (Ccnx::Name name, Ccnx::Selectors selectors){
    Ccnx::Name dataName;
    clog<<"on interest data name    "<<name<<endl;
    std::string consumer = name.getCompAsString(2); //consumer
    std::string producer = name.getCompAsString(1); //producer
    std::string endPoint = name.getCompAsString(3); //endpoint
    std::string action = name.getCompAsString(4); //action
    std::string prefix = name.getCompAsString(0);
    std::string app;
    std::string session;
    vector <string> app_session;
    boost::split(app_session, prefix,boost::is_any_of("_"));        	
    app = app_session[0];
    session = app_session[1];	
    OrganizerSession *oSession;
    ParticipantSession *pSession;
    Context::instance()->retrieveSession(app, session, &oSession, &pSession);    	
    std::string msg("");
    //resolving name
    if (endPoint.compare("shared-key") == 0){
        dataName = parseSharedKey(name,msg,oSession,pSession);
    }
    if (endPoint.compare("membership") == 0){
        dataName = parseMembership(name,oSession,pSession);
    }
    if (endPoint.compare("public-key") == 0){
        dataName = parsePublicKey(name, msg,oSession,pSession);
    }
    std::clog<<"dataname back to consumer  "<<dataName<<std::endl;
    std::clog<<"sent data msg" <<msg<<std::endl;
    
    handler.publishData (dataName, msg, 5);
}
Ejemplo n.º 2
0
Ccnx::Name remoteServer::parseMembership(Ccnx::Name name,	 OrganizerSession *oSession,	ParticipantSession *pSession){
    std::string action = name.getCompAsString(4); //action
    std::string consumer = name.getCompAsString(2); //consumer
    Ccnx::Name dataName = name;
    if (action.compare("join") == 0 ||
        action.compare("accept") == 0 ||
        action.compare("reject") == 0){
        dataName.appendComp("code=0");
    }
    std::clog<<"action:  "<<action<<endl;
    if (action.compare("join") == 0){
//     	  std::string consumer = name.getCompAsString(1); //consumer
     	  if (oSession){
              std::clog<<"consumer   "<<consumer<<endl;
    			oSession->recvJoinRemote(consumer);
    		}
    }
    if (action.compare("accept") == 0){
    	if (pSession){
    		pSession->recvAcceptJoinRemote();
    	}
    }
    if (action.compare("reject") == 0){
    	if (pSession){
				pSession->recvRejectJoinRemote();
			}
    }
    return dataName;
};
Ejemplo n.º 3
0
Ccnx::Name remote::getBaseName(Ccnx::Name name)
{
    Ccnx::Name base = Ccnx::Name();
	  for (int i = 0; i <=4 ;i++)
	  {
	  	base.appendComp(name.getCompAsString(i));
	  }
	  return base;
}
Ejemplo n.º 4
0
int  remoteServer::init(std::string app, std::string session, std::string consumer){
	std::string prefix(app);
	prefix.append("_");
	prefix.append(session);
	Ccnx::Name interestBaseName = Ccnx::Name();
    interestBaseName.appendComp(prefix);
    interestBaseName.appendComp(consumer);
	handler.setInterestFilter (interestBaseName, boost::bind (&remoteServer::OnInterest, this, _1, _2));

    return 0;
}
Ejemplo n.º 5
0
Ccnx::BytesPtr
ObjectDb::fetchSegment(const Ccnx::Name& deviceName, sqlite3_int64 segment)
{
  sqlite3_stmt* stmt;
  sqlite3_prepare_v2(m_db, "SELECT content_object FROM File WHERE device_name=? AND segment=?", -1,
                     &stmt, 0);

  CcnxCharbufPtr buf = deviceName.toCcnxCharbuf();
  sqlite3_bind_blob(stmt, 1, buf->buf(), buf->length(), SQLITE_TRANSIENT);
  sqlite3_bind_int64(stmt, 2, segment);

  BytesPtr ret;

  int res = sqlite3_step(stmt);
  if (res == SQLITE_ROW) {
    const unsigned char* buf = reinterpret_cast<const unsigned char*>(sqlite3_column_blob(stmt, 0));
    int bufBytes = sqlite3_column_bytes(stmt, 0);

    ret = make_shared<Bytes>(buf, buf + bufBytes);
  }

  sqlite3_finalize(stmt);

  // update last used time
  m_lastUsed = time(NULL);

  return ret;
}
Ejemplo n.º 6
0
void
Dispatcher::Did_FetchManager_FileSegmentFetch_Execute(Ccnx::Name deviceName,
                                                      Ccnx::Name fileSegmentBaseName,
                                                      uint32_t segment, Ccnx::PcoPtr fileSegmentPco)
{
  // fileSegmentBaseName:  /<device_name>/<appname>/file/<hash>

  const Bytes& hashBytes = fileSegmentBaseName.getCompFromBack(0);
  Hash hash(head(hashBytes), hashBytes.size());

  _LOG_DEBUG("Received segment deviceName: " << deviceName << ", segmentBaseName: " << fileSegmentBaseName
                                             << ", segment: "
                                             << segment);

  // _LOG_DEBUG ("Looking up objectdb for " << hash);

  map<Hash, ObjectDbPtr>::iterator db = m_objectDbMap.find(hash);
  if (db != m_objectDbMap.end()) {
    db->second->saveContentObject(deviceName, segment, fileSegmentPco->buf());
  }
  else {
    _LOG_ERROR("no db available for this content object: " << fileSegmentBaseName << ", size: "
                                                           << fileSegmentPco->buf().size());
  }

  // ObjectDb objectDb (m_rootDir / ".chronoshare", lexical_cast<string> (hash));
  // objectDb.saveContentObject(deviceName, segment, fileSegmentPco->buf ());
}
Ejemplo n.º 7
0
void
Dispatcher::Did_LocalPrefix_Updated(const Ccnx::Name& forwardingHint)
{
  Name effectiveForwardingHint;
  if (m_localUserName.size() >= forwardingHint.size() &&
      m_localUserName.getPartialName(0, forwardingHint.size()) == forwardingHint) {
    effectiveForwardingHint = Name("/"); // "directly" accesible
  }
  else {
    effectiveForwardingHint = forwardingHint;
  }

  Name oldLocalPrefix = m_syncLog->LookupLocalLocator();

  if (oldLocalPrefix == effectiveForwardingHint) {
    _LOG_DEBUG(
      "Got notification about prefix change from " << oldLocalPrefix << " to: " << forwardingHint
                                                   << ", but effective prefix didn't change");
    return;
  }

  if (effectiveForwardingHint == Name("/") || effectiveForwardingHint == Name(BROADCAST_DOMAIN)) {
    _LOG_DEBUG("Basic effective prefix [" << effectiveForwardingHint
                                          << "]. Updating local prefix, but don't reregister");
    m_syncLog->UpdateLocalLocator(effectiveForwardingHint);
    return;
  }

  _LOG_DEBUG("LocalPrefix changed from: " << oldLocalPrefix << " to: " << effectiveForwardingHint);

  m_server->registerPrefix(effectiveForwardingHint);
  m_syncLog->UpdateLocalLocator(effectiveForwardingHint);

  if (oldLocalPrefix == Name("/") || oldLocalPrefix == Name(BROADCAST_DOMAIN)) {
    _LOG_DEBUG("Don't deregister basic prefix: " << oldLocalPrefix);
    return;
  }
  m_server->deregisterPrefix(oldLocalPrefix);
}
Ejemplo n.º 8
0
bool
ObjectDb::DoesExist(const boost::filesystem::path& folder, const Ccnx::Name& deviceName,
                    const std::string& hash)
{
  fs::path actualFolder = folder / "objects" / hash.substr(0, 2);
  bool retval = false;

  sqlite3* db;
  int res = sqlite3_open((actualFolder / hash.substr(2, hash.size() - 2)).c_str(), &db);
  if (res == SQLITE_OK) {
    sqlite3_stmt* stmt;
    sqlite3_prepare_v2(db,
                       "SELECT count(*), count(nullif(content_object,0)) FROM File WHERE device_name=?",
                       -1, &stmt, 0);

    CcnxCharbufPtr buf = deviceName.toCcnxCharbuf();
    sqlite3_bind_blob(stmt, 1, buf->buf(), buf->length(), SQLITE_TRANSIENT);

    int res = sqlite3_step(stmt);
    if (res == SQLITE_ROW) {
      int countAll = sqlite3_column_int(stmt, 0);
      int countNonNull = sqlite3_column_int(stmt, 1);

      _LOG_TRACE("Total segments: " << countAll << ", non-empty segments: " << countNonNull);

      if (countAll > 0 && countAll == countNonNull) {
        retval = true;
      }
    }

    sqlite3_finalize(stmt);
  }

  sqlite3_close(db);
  return retval;
}
Ejemplo n.º 9
0
void
ObjectDb::saveContentObject(const Ccnx::Name& deviceName, sqlite3_int64 segment,
                            const Ccnx::Bytes& data)
{
  sqlite3_stmt* stmt;
  sqlite3_prepare_v2(m_db, "INSERT INTO File "
                           "(device_name, segment, content_object) "
                           "VALUES (?, ?, ?)",
                     -1, &stmt, 0);

  //_LOG_DEBUG ("Saving content object for [" << deviceName << ", seqno: " << segment << ", size: " << data.size () << "]");

  CcnxCharbufPtr buf = deviceName.toCcnxCharbuf();
  sqlite3_bind_blob(stmt, 1, buf->buf(), buf->length(), SQLITE_STATIC);
  sqlite3_bind_int64(stmt, 2, segment);
  sqlite3_bind_blob(stmt, 3, &data[0], data.size(), SQLITE_STATIC);

  sqlite3_step(stmt);
  //_LOG_DEBUG ("After saving object: " << sqlite3_errmsg (m_db));
  sqlite3_finalize(stmt);

  // update last used time
  m_lastUsed = time(NULL);
}
Ejemplo n.º 10
0
int remote::init(std::string prefix,std::string producer,
                 std::string consumer,std::string
                 endpoint,std::string action){
    
    Ccnx::Name interestBaseName = Ccnx::Name();
    interestBaseName.appendComp(prefix);
    interestBaseName.appendComp(producer);
    interestBaseName.appendComp(consumer);
    interestBaseName.appendComp(endpoint);
    interestBaseName.appendComp(action); //action
    interestBaseName.appendComp("xxx"); //rand+auth_token/
    //    InterestBaseName = Ccnx::Name (interestName);
//    Ccnx::Wrapper handler;
    std::clog<<interestBaseName<<std::endl;
    handler.sendInterest (interestBaseName,
                          Ccnx::Closure (boost::bind (&remote::runDataCallback, this, _1, _2),
                                         boost::bind (&remote::runTimeoutCallback, this, _1, _2, _3)),
                          Ccnx::Selectors ().scope (Ccnx::Selectors::SCOPE_LOCAL_HOST));
    
 //   sleep (3);
    return 0;
    
}
Ejemplo n.º 11
0
void remote::runDataCallback(Name name, Ccnx::PcoPtr pco)
{
    std::clog<<"data callback name:  "<<name<<std::endl;
    Ccnx::BytesPtr content = pco->contentPtr ();
    std::clog<<"data callback content:  "<<content<<std::endl;
    std::string action = name.getCompAsString(4); //action
    std::string consumer = name.getCompAsString(2); //consumer
    std::string producer = name.getCompAsString(1); //producer
    std::string endPoint = name.getCompAsString(3); //endpoint
    std::string prefix = name.getCompAsString(0);
    std::string app;
    std::string session;
    vector <string> app_session;
    split(prefix, app_session, "_");        	
    app = app_session[0];
    session = app_session[1];
    
    int size = name.size();    
    std::string lastComponent =name.getCompAsString(size-1);
    vector <string> splitPara;
    split(lastComponent, splitPara, ",");
    if (splitPara.size() == 1 && splitPara[0].compare("code=0") == 0)
        return;
    
    int code;
    int version =0;
   	int flag; //1: first packet 0:later packets
    int seqnum = 0;
    int chunkSize = 0;
    if (splitPara.size() == 3){
        flag = 1;
        vector <string> tmp1,tmp2,tmp3;
        split(splitPara[0], tmp1, "=");
        code = atoi(tmp1[1].c_str());
        split(splitPara[1], tmp2, "=");
        version = atoi(tmp2[1].c_str());
        split(splitPara[2], tmp3, "=");
        chunkSize = atoi(tmp3[1].c_str());
        seqnum = 1;
    }
    else{
        flag = 0;
        std::string tmp = name.getCompFromBackAsString(1);
        vector <string> chunkTmp;
        split(tmp, chunkTmp, "=");
        seqnum = atoi(chunkTmp[1].c_str());
//        cout<<"seqnum chunk"<<seqnum<<"  "<<chunk<<endl;
    }

    OrganizerSession *oSession;
    ParticipantSession *pSession;
    Context::instance()->retrieveSession(app, session, &oSession, &pSession);

    if (action.compare("fetch") == 0)
    {
    	if (endPoint.compare("public-key") == 0)
    	{
            if (pSession)
            {
    			pSession->recvPublicKeyRemote(producer, version, seqnum, chunkSize,
        	string ((char*)Ccnx::head (*content), content->size ()));    			
            }
            if (oSession)
            {
    			oSession->recvPublicKeyRemote(producer, version, seqnum, chunkSize,
        	string ((char*)Ccnx::head (*content), content->size ()));    			
            }		  		
    	}
    	 
      if (endPoint.compare("shared-key") == 0)
      {
          //decrypt
          std::string privateKey;
          privateKey = KeyDB::instance().getPriKey();
          EVP_PKEY *pri_key = KeyDB::instance().str2priKey(privateKey);
          RSA *decrypt_key;
          /*for test*/
          FILE *rsa_pkey_file;
          rsa_pkey_file = fopen("../db/pri1.pem", "r");
          
          if (!PEM_read_RSAPrivateKey(rsa_pkey_file, &decrypt_key, NULL, NULL))
          {
              fprintf(stderr, "Error loading RSA Private Key File.\n");
              ERR_print_errors_fp(stderr);
          }
          /*test end*/
          
          std::string encrypt_string = string ((char*)Ccnx::head (*content), content->size ());
          cout<<encrypt_string<<endl;
          char *encrypt = (char *)(encrypt_string.c_str());
          char *decrypt = NULL;
          int encrypt_len  = content->size();
          cout<<"encrypt_len"<<encrypt_len<<endl;
//          decrypt_key = EVP_PKEY_get1_RSA(pri_key);  //important line
          decrypt = (char *)malloc(encrypt_len);
          memset(decrypt,0,(encrypt_len));
          char *err = (char *)malloc(130);
          if(RSA_private_decrypt(encrypt_len, (unsigned char*)encrypt, (unsigned char*)decrypt, decrypt_key, RSA_PKCS1_OAEP_PADDING) == -1)
          {
              ERR_load_crypto_strings();
     			   ERR_error_string(ERR_get_error(), err);
       			 fprintf(stderr, "Error encrypting message: %s\n", err);
          }
          cout<<decrypt<<endl;
          std::string decrypt_string = string(decrypt);
          cout<<decrypt_string<<endl;
          if (pSession)
          {
            pSession->recvSharedKeyRemote(version, seqnum, chunkSize,
              decrypt_string);
          }
      }
    }
    if (flag == 1)
    {
	    for (seqnum = 1; seqnum < chunkSize; seqnum++)
  	  {
  	  	Ccnx::Name interestName = Ccnx::Name();
        interestName = getBaseName(name);
        interestName.appendComp("v="+boost::lexical_cast <string>(version));
    	  interestName.appendComp("chunk="+(boost::lexical_cast <string>(seqnum+1)));
    	  interestName.appendComp("xxx");
        handler.sendInterest (interestName,
                          Ccnx::Closure (boost::bind (&remote::runDataCallback, this, _1, _2),
                                         boost::bind (&remote::runTimeoutCallback, this, _1, _2, _3)),
                          Ccnx::Selectors ().scope (Ccnx::Selectors::SCOPE_LOCAL_HOST));  
    	}
    }
}
Ejemplo n.º 12
0
void
Dispatcher::Did_FetchManager_FileFetchComplete_Execute(Ccnx::Name deviceName, Ccnx::Name fileBaseName)
{
  // fileBaseName:  /<device_name>/<appname>/file/<hash>

  _LOG_DEBUG("Finished fetching " << deviceName << ", fileBaseName: " << fileBaseName);

  const Bytes& hashBytes = fileBaseName.getCompFromBack(0);
  Hash hash(head(hashBytes), hashBytes.size());
  _LOG_DEBUG("Extracted hash: " << hash.shortHash());

  if (m_objectDbMap.find(hash) != m_objectDbMap.end()) {
    // remove the db handle
    m_objectDbMap.erase(hash); // to commit write
  }
  else {
    _LOG_ERROR("no db available for this file: " << hash);
  }

  FileItemsPtr filesToAssemble = m_fileState->LookupFilesForHash(hash);

  for (FileItems::iterator file = filesToAssemble->begin(); file != filesToAssemble->end(); file++) {
    boost::filesystem::path filePath = m_rootDir / file->filename();

    try {
      if (filesystem::exists(filePath) && filesystem::last_write_time(filePath) == file->mtime() &&
#if BOOST_VERSION >= 104900
          filesystem::status(filePath).permissions() == static_cast<filesystem::perms>(file->mode()) &&
#endif
          *Hash::FromFileContent(filePath) == hash) {
        _LOG_DEBUG("Asking to assemble a file, but file already exists on a filesystem");
        continue;
      }
    }
    catch (filesystem::filesystem_error& error) {
      _LOG_ERROR("File operations failed on [" << filePath << "] (ignoring)");
    }

    if (ObjectDb::DoesExist(m_rootDir / ".chronoshare", deviceName,
                            boost::lexical_cast<string>(hash))) {
      bool ok = m_objectManager.objectsToLocalFile(deviceName, hash, filePath);
      if (ok) {
        last_write_time(filePath, file->mtime());
#if BOOST_VERSION >= 104900
        permissions(filePath, static_cast<filesystem::perms>(file->mode()));
#endif

        m_fileState->SetFileComplete(file->filename());
      }
      else {
        _LOG_ERROR("Notified about complete fetch, but file cannot be restored from the database: ["
                   << filePath
                   << "]");
      }
    }
    else {
      _LOG_ERROR(filePath << " supposed to have all segments, but not");
      // should abort for debugging
    }
  }
}
Ejemplo n.º 13
0
Ccnx::Name remoteServer::parseSharedKey(Ccnx::Name name, std::string &ret,
	    OrganizerSession *oSession,	ParticipantSession *pSession){
    int flag;

     std::string consumer = name.getCompAsString(2); //consumer
    std::string producer = name.getCompAsString(1); //producer
    std::string endPoint = name.getCompAsString(3); //endpoint
    std::string action = name.getCompAsString(4); //action
    std::string prefix = name.getCompAsString(0); //prefix

    int size = name.size();
    int version = 0;
    int chunkNum = 0;
    int chunkSize = 0;
    Ccnx::Name dataName = name;
    if (action.compare("fetch") == 0){
        std::string lastComponent = name.getCompAsString(size-2);
        if (boost::starts_with(lastComponent,"chunk="))
        {
            flag = 1;  //later packet
        }
        else{
            flag = 0;  //para
        }
        //  
        if (flag == 0){
        	  chunkSize = 0;
        	  chunkNum = 0;        	  
        	  if (oSession)
        	  {
                  oSession->recvFetchSharedKeyRemote(consumer, version, chunkNum,chunkSize, ret);
              }

//encrypt
            vector<std::string> tmp2;
            boost::split(tmp2,prefix,boost::is_any_of("_"));
            std::string app = tmp2[0];
            std::string publicKey[3];
            KeyDB::instance().getKeyFromUser(app,(KeyDB::global), publicKey,consumer);
      //      cout<<"after fetch"<<endl;
            cout<<"key content"<<endl;
            cout<<publicKey[1]<<endl;
            EVP_PKEY *pub_key = KeyDB::instance().str2Key(publicKey[1]);
     //       std::string plain_string = ret;
   //         cout<<"plain "<<plain_string<<endl;
 //           char *plain2 = (char *)(plain_string.c_str());
	//					cout<<pub_key->type<<endl;
	//					cout<<pub_key->pkey.ptr<<endl;
            char plain[128];
            sprintf(plain,"%s",ret.c_str());
//            cout<<"aaaaa"<<endl;
//            cout<<plain<<endl;
//            plain[3]='\0';
//            plain[plain_string.size()] = '\0';
    
      //      cout<<"sadfsf"<<endl;
    /*for test*/
/*            RSA *encrypt_key;
            FILE *rsa_pkey_file;
            rsa_pkey_file = fopen("../db/pub1.pub", "r");
            if (rsa_pkey_file == NULL)
            {
                cout<<"no pointer"<<endl;
            }
            cout<<"before bbbbb"<<endl;
				    if (!PEM_read_RSA_PUBKEY(rsa_pkey_file, &encrypt_key, NULL, NULL))
    				{
        			fprintf(stderr, "Error loading RSA Public Key File.\n");
        			ERR_print_errors_fp(stderr);
    				}
            fclose(rsa_pkey_file);
  */  				/*test end*/
  
  
            RSA *encrypt_key;
        //    EVP_PKEY_set1_RSA(pub_key,encrypt_key);
            encrypt_key = EVP_PKEY_get1_RSA(pub_key);
            int encrypt_len;
            cout<<RSA_size(encrypt_key)<<endl;
            char *encrypt = (char *)malloc(RSA_size(encrypt_key));
//            memset(encrypt,0,RSA_size(encrypt_key));
        //    cout<<"before encrpyt"<<endl;
            if((encrypt_len = RSA_public_encrypt(strlen(plain), (unsigned char*)plain, 
    					(unsigned char*)encrypt, encrypt_key, RSA_PKCS1_OAEP_PADDING)) == -1) {
					        ERR_load_crypto_strings();
    				}
/*            char *encrypt_test = (char *)malloc(RSA_size(encrypt_key));
            //            memset(encrypt,0,RSA_size(encrypt_key));
            cout<<"before encrpyt"<<endl;
            if((encrypt_len = RSA_public_encrypt(strlen(plain), (unsigned char*)plain,
                                                 (unsigned char*)encrypt_test, encrypt_key_test, RSA_PKCS1_OAEP_PADDING)) == -1) {
                ERR_load_crypto_strings();
            }
            cout<<"test   "<<encrypt_test<<endl;
  */
    //        cout<<"encrypt text:"<<endl;
     //       cout<<encrypt<<endl;
            ret = string(encrypt,encrypt_len);
            std::string tmp = "code=0,version=";
            std::string v = boost::lexical_cast <string>(version);
            tmp.append(v);
            tmp.append(",chunk=");
            std::string ch = boost::lexical_cast <string>(chunkSize);
            tmp.append(ch);
            dataName.appendComp(tmp);
        }
        else{
            dataName= name;
            vector<std::string> str1;
            boost::split(str1,lastComponent,boost::is_any_of("="));
            std::string versionComponent = name.getCompAsString(size-3);
            vector<std::string> str2;
            boost::split(str2,versionComponent,boost::is_any_of("="));
            version = atoi(str2[1].c_str());
            chunkNum = atoi(str1[1].c_str());
            if (oSession)
            {
                oSession->recvFetchSharedKeyRemote(consumer, version, chunkNum, chunkSize, ret);
            }
            char *from = (char *)ret.c_str();
            char *to = NULL ;
            //          get public key
            //           do_encrypt(&to, from,key,len);
        }
    }
    else{
        if (boost::starts_with(action,"update")){
            dataName.appendComp("code=0");
            vector<std::string> tmp;
            boost::split(tmp,action,boost::is_any_of("_"));            
            version = atoi(tmp[1].c_str());
            if (pSession)
            {
            	 pSession->recvRenewSharedKeyRemote(version);
            }
//           
//						orgsession->recvRenewSharedKeyRemote(version);
        }
    }
    return dataName;
};
Ejemplo n.º 14
0
Ccnx::Name remoteServer::parsePublicKey(Ccnx::Name name, std::string &ret,
	 OrganizerSession *oSession,	ParticipantSession *pSession){
    int flag;
//    std::string consumer = name.getCompAsString(1); //consumer
//    std::string producer = name.getCompAsString(2); //producer
 //   std::string endPoint = name.getCompAsString(3); //endpoint
  //  std::string action = name.getCompAsString(4); //action
    std::string consumer = name.getCompAsString(2); //consumer
    std::string producer = name.getCompAsString(1); //producer
    std::string endPoint = name.getCompAsString(3); //endpoint
    std::string action = name.getCompAsString(4); //action

    int size = name.size();
    int version = 0;
    int chunkNum = 0;
    int chunkSize = 0;
    Ccnx::Name dataName = name;
    if (action.compare("fetch") == 0){
        std::string lastComponent = name.getCompAsString(size-2);
        if (boost::starts_with(lastComponent,"chunk="))
        {
            flag = 1;
        }
        else{
            flag = 0;  //para
        }
        //  
        if (flag == 0){
        	  chunkSize = 0;
        	  chunkNum = 0;        	  
        	  if (oSession)
        	  {
						  oSession->recvFetchPublicKeyRemote(consumer, version, chunkNum,chunkSize, ret);
            }
            if (pSession)
        	  {
						  pSession->recvFetchPublicKeyRemote(consumer, version, chunkNum,chunkSize, ret);
            }
            std::string tmp = "code=0,version=";
            std::string v = boost::lexical_cast <string>(version);
            tmp.append(v);
            tmp.append(",chunk=");
            std::string ch = boost::lexical_cast <string>(chunkNum);
            tmp.append(ch);
            dataName.appendComp(tmp);
        }
        else{
            dataName= name;
            vector<std::string> str1;
            boost::split(str1,lastComponent,boost::is_any_of("="));
            std::string versionComponent = name.getCompAsString(size-3);
            vector<std::string> str2;
            boost::split(str2,versionComponent,boost::is_any_of("="));
            version = atoi(str2[1].c_str());
            chunkNum = atoi(str1[1].c_str());
            if (oSession)
        	  {
						  oSession->recvFetchPublicKeyRemote(consumer, version, chunkNum,chunkSize, ret);
            }
            if (pSession)
        	  {
						  pSession->recvFetchPublicKeyRemote(consumer, version, chunkNum,chunkSize, ret);
            }
        }
    }
    return dataName;
};