static ACE_THR_FUNC_RETURN process(void* arg){ ACE_INET_Addr addr; ACE_SOCK_Stream stream; ACE_HANDLE handle = (ACE_HANDLE) (intptr_t) arg; stream.set_handle(handle); /*make sure we're not in non-blocking mode.*/ if(stream.disable(ACE_NONBLOCK) == -1){ ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "disable"), 0); } else if(stream.get_remote_addr(addr) == -1){ ACE_ERROR_RETURN ((LM_ERROR, "%p\n", "get_remote_addr"), 0); } ACE_DEBUG ((LM_INFO, "(%P|%t:%l) client %s connected from %d\n", addr.get_host_name (), addr.get_port_number ())); int r_bytes = 0; char buf[SIZE]; ACE_CString cs; do{ r_bytes = stream.recv(buf, SIZE); if(r_bytes == 0 || r_bytes == -1){ ACE_DEBUG((LM_INFO, "(%P|%t:%l) r_bytes = %d, exit from the loop\n", r_bytes)); break; } for(int i=0; i< r_bytes; i++){ cs += buf[i]; } }while(true); stream.close_reader(); /* ACE_DEBUG((LM_INFO, "%s\n", cs.c_str())); */ /*the layout of the message would be: * ^^pq||step1$$ * 1st step: get the d by pq * 2nd calculate * 3rd send back the digest */ int p0, p1; int len = cs.length(); p0 = 2; p1 = cs.find("||"); ACE_CString pq = cs.substr(2, p1 - 2); ACE_CString step1 = cs.substr(p1 + 2, len - p1 -4); /* ACE_DEBUG((LM_INFO, "pq = %s\n step1 = %s\n", pq.c_str(), step1.c_str())); */ //get the d ACE_CString sql = "select d,textid from player0 where pq='"; sql += pq; sql += "'"; /* ACE_DEBUG((LM_INFO, "sql = %s\n", sql.c_str())); */ PGconn* con; con = PQconnectdb("host=45.33.3.188 port=5432 dbname=nv user=dec"); PGresult* res; if(PQstatus(con)!= CONNECTION_OK){ ACE_DEBUG((LM_INFO, "Connection to database failed:%s\n", PQerrorMessage(con))); reclaim_conn(con); } res = PQexec(con, sql.c_str()); int n = PQntuples(res); if(n != 1){ ACE_ERROR((LM_ERROR, "there is significant error: %d\n", n)); // return 0; } ACE_CString d = ""; d += PQgetvalue(res, 0, 0); /* ACE_DEBUG((LM_INFO, "d = %s\n", d.c_str())); */ bn* pq_ = from_hex(&pq); bn* d_ = from_hex(&d); bn* step1_ = from_hex(&step1); bn* step2_ = npmod(step1_ , d_ , pq_ ); ACE_CString* step2 = step2_->to_hex(); //check if the pq is taking the ownnership? /* if pq is 'centralbank', bypass the check, otherwise check the payer whether has the ownnership of the note; * select count(*) from ownership0 o, player0 p where o.owner = p.textid and o.note='0x12345678' and p.pq='0x12345678'; */ bn* e_ = new bn(1); e_->addat(0,0x10001); bn* step3_ = npmod(step2_ , e_ , pq_ ); ACE_CString* rawMsg = encode(step3_); ACE_DEBUG((LM_INFO, "%T :%l step3 = %s\n", rawMsg->c_str())); if(verify_ownership(rawMsg, pq)){ //update the ownership; int pos1 = rawMsg->find("->"); ACE_CString note = rawMsg->substr(2, pos1 -2); int rawlen = rawMsg->length(); ACE_CString id = rawMsg->substr(pos1 + 2, rawlen - pos1 - 6); update_ownership(note, id); /*insert the log entry*/ insert_logentry(pq, *step2, *rawMsg, note, id); stream.send( step2->c_str(), step2->length()); /* ACE_DEBUG((LM_INFO, "%T :%l the step2 message is:\n%s\n", step2->c_str())); */ }else{ ACE_DEBUG((LM_INFO, "%T :%l invalid transfer\n")); ACE_CString reply ="invalid transfer\n"; stream.send( reply.c_str(), reply.length()); } delete step2 ; delete pq_; delete d_; delete step1_; delete step2_; delete e_; delete step3_; delete rawMsg; /* stream.close_writer(); */ stream.close(); ACE_DEBUG((LM_INFO, "%T :%l closed the stream\n")); }