client.cpp

crypt_service源码,很值得研究!下来看看就知道!

// Codeproject: A simple C++ client/server application with CORBA
// Module: client.cpp
// Description: Client implementation


#include <iostream>
#include <string>
#include "OB/CORBA.h"
#include "OB/Cosnaming.h"
#include "crypt.h"


using namespace std;

int main(int argc, char** argv)
{
	
	try {
		// Initialize the ORB
		CORBA::ORB_var orb = CORBA::ORB_init(argc, argv);

		// Get a reference to the Naming Service
		CORBA::Object_var rootContextObj = orb->resolve_initial_references("NameService");
		CosNaming::NamingContext_var nc = 
				CosNaming::NamingContext::_narrow(rootContextObj.in());
	       
		CosNaming::Name name;
		name.length(1);
		name[0].id = (const char *) "CryptographicService";
		name[0].kind = (const char *) "";
		// Invoke the root context to retrieve the object reference
		CORBA::Object_var managerObj = nc->resolve(name);
		// Narrow the previous object to obtain the correct type
		::CaesarAlgorithm_ptr manager = 
		::CaesarAlgorithm::_narrow(managerObj.in());

		string info_in,info_out,exit,dummy; 
		::CaesarAlgorithm::charsequence* inseq;
		unsigned long key,shift;
		
		try{

			do{
				cout << "\nCryptographic service client" << endl;
				cout << "----------------------------" << endl;
		
				do{ // Get the cryptographic key
					if (cin.fail())
					{
						cin.clear();
						cin >> dummy;
					}
					cout << "Enter encryption key: ";	
					cin >> key;

				} while (cin.fail());
				
				do{ // Get the shift
					if (cin.fail())
					{
						cin.clear();
						cin >> dummy;
					}
					cout << "Enter a shift: ";	
					cin >> shift;

				} while (cin.fail());
				
				// Used for debug pourposes
				//key = 9876453;
				//shift = 938372;
				getline(cin,dummy); // Get the text to encrypt
				cout << "Enter a plain text to encrypt: ";
				getline(cin,info_in);
		
				// Invoke first remote method
				inseq = manager->encrypt(info_in.c_str(),key,shift);
				cout << "----------------------------------------------" << endl;
				cout << "Encrypted text is: " << inseq->get_buffer() << endl;
				// Invoke second remote method
				info_out = manager->decrypt(*inseq,key,shift);
				cout << "Decrypted text is: " << info_out << endl;
				cout << "----------------------------------------------" << endl;
				cout << "Exit? (y/n): "; 
				cin >> exit;
			} while (exit!="y");
		} catch(const std::exception& std_e){
			cerr << std_e.what() << endl;
			return 1;
			}
	}catch(const CORBA::Exception& e) {
		// Handles CORBA exceptions
		cerr << e << endl;
    return 1;
   }
  return 0;
}