WebSVN – Games.Chess Giants – Diff – /dialog/dialog_registration.cpp

 // dialog template
 #define THIS_DIALOG DIALOG_REGISTER
 // global variables used in this module only
-static wchar_t candidate_email[128] = L"";
+static wchar_t transaction_uuid[128] = L"";
-static unsigned __int32 candidate_code = 0; // 32 bits
 static bool was_donatebutton_clicked = false;
+static HWND hThisDialogWnd = NULL;
 // prototypes of local functions
+static void RegistrationCheckThread (void *thread_parms);
 static int CALLBACK DialogProc_ThisDialog (HWND hWnd, unsigned int message, WPARAM wParam, LPARAM lParam);
-static unsigned __int32 RetrieveActivationCode (wchar_t *candidate_email, wchar_t **failure_reason);
+static bool RetrieveActivationCode (wchar_t *candidate_email_or_uuid, unsigned int *returned_code, wchar_t **returned_email, wchar_t **failure_reason);
 void DialogBox_Registration (void)
+{
    // helper function to fire up the modal dialog box
+   // first, test if our server is reachable. We DO NOT want the user to donate if our server isn't here to receive the donation!
+   if (!RetrieveActivationCode (NULL, NULL, NULL, NULL))
+      return; // if it's not, don't display anything
+   // generate a random transaction UUID for this session
+   srand ((unsigned int) time (NULL));
+   swprintf_s (transaction_uuid, sizeof (transaction_uuid), L"%04x%04x-%04x-%04x-%04x-%04x%04x%04x", rand (), rand (), rand (), (rand () & 0x0fff) | 0x4000, (rand () & 0x3fff) | 0x8000, rand (), rand (), rand ());
+   // start a new thread that will ask every 10 seconds if our transaction ID has donated
+   _beginthread (RegistrationCheckThread, 0, NULL); // fire up the thread
    // display the dialog box (set the parent to be the desktop)
    DialogBox (hAppInstance, MAKEINTRESOURCE (THIS_DIALOG), NULL, DialogProc_ThisDialog);
    return; // finished processing this dialog
+}
+static void RegistrationCheckThread (void *thread_parms)
+{
+   // thread entrypoint for the thread that periodically checks whether transaction_uuid has just donated
+   unsigned int returned_code; // 32 bits minimum
+   wchar_t *returned_email;
+   // loop endlessly
+   for (;;)
+   {
+      // query the remote server for the code associated with this transaction UUID
+      if (RetrieveActivationCode (transaction_uuid, &returned_code, &returned_email, NULL) && IsRegistrationCorrect (returned_email, returned_code))
+         break; // stop looping as soon as we get correct values
+      Sleep (10 * 1000); // next check in 10 seconds
+   }
+   // the user just registered, save activation email and activation code
+   wcscpy_s (options.registration.user_email, WCHAR_SIZEOF (options.registration.user_email), returned_email);
+   options.registration.activation_code = returned_code;
+   if (IsWindow (hThisDialogWnd))
+      ShowWindow (hThisDialogWnd, SW_HIDE); // make the dialog box disappear
+   MessageBox (NULL, LOCALIZE (L"Registration_ThankYou"), PROGRAM_NAME, MB_ICONINFORMATION | MB_OK); // display a "thank you" message
+   was_donatebutton_clicked = false; // prevent the reminder dialog box to open
+   if (IsWindow (hThisDialogWnd))
+      PostMessage (hThisDialogWnd, WM_CLOSE, 0, 0); // then close the dialog box
+   return; // _endthread() implied
+}
 static int CALLBACK DialogProc_ThisDialog (HWND hWnd, unsigned int message, WPARAM wParam, LPARAM lParam)
+{
    static wchar_t temp_string[1024];
    unsigned short wParam_hiword;
    unsigned short wParam_loword;
+   unsigned int returned_code; // 32 bits minimum
    wchar_t *failure_reason;
    int write_index;
    int read_index;
    int length;
    wParam_loword = LOWORD (wParam);
    // have we just fired up this window ?
    if (message == WM_INITDIALOG)
+   {
+      hThisDialogWnd = hWnd; // save the dialog handle
       // center the window
       CenterWindow (hWnd, hMainWnd);
       // set dialog icons (small one for title bar & big one for task manager)
       SendMessage (hWnd, WM_SETICON, ICON_SMALL, (LPARAM) LoadIcon (hAppInstance, MAKEINTRESOURCE (ICON_MAIN)));
          was_donatebutton_clicked = false; // once is enough
          return (true); // prevent window close this time
+      }
       else
          EndDialog (hWnd, 0); // close the dialog box
+      hThisDialogWnd = NULL; // this window is about to no longer have a handle, so remember it
+   }
    // else did we take action on one of the controls ?
    else if (message == WM_COMMAND)
+   {
       // else did the user enter something in the edit boxes ?
       else if (wParam_hiword == EN_CHANGE)
+      {
          // enable the validation button only if the PayPal email field has data
-         GetDlgItemText (hWnd, EDITBOX_REGISTRATION_EMAILADDRESS, candidate_email, WCHAR_SIZEOF (candidate_email));
+         GetDlgItemText (hWnd, EDITBOX_REGISTRATION_EMAILADDRESS, temp_string, WCHAR_SIZEOF (temp_string));
          // strip spaces and unprintable characters from candidate email, and bring it lowercase
-         length = wcslen (candidate_email);
+         length = wcslen (temp_string);
          write_index = 0;
          for (read_index = 0; read_index < length; read_index++)
-            if (!iswspace (candidate_email[read_index]))
+            if (!iswspace (temp_string[read_index]))
+            {
-               candidate_email[write_index] = tolower (candidate_email[read_index]); // force lowercase
+               temp_string[write_index] = tolower (temp_string[read_index]); // force lowercase
                write_index++; // keep only valid signs and discard spaces
+            }
-         candidate_email[write_index] = 0; // ensure string is correctly terminated
+         temp_string[write_index] = 0; // ensure string is correctly terminated
-         EnableWindow (GetDlgItem (hWnd, BUTTON_VALIDATECODE), ((candidate_email[0] != 0) && (wcslen (candidate_email) > 5) && (wcscmp (candidate_email, LOCALIZE (L"Registration_YourEmailHere")) != 0)
+         EnableWindow (GetDlgItem (hWnd, BUTTON_VALIDATECODE), ((temp_string[0] != 0) && (wcslen (temp_string) > 5) && (wcscmp (temp_string, LOCALIZE (L"Registration_YourEmailHere")) != 0)
-                                                                && (wcschr (candidate_email, L'@') != NULL) && (wcschr (candidate_email, L'.') != NULL)));
+                                                                && (wcschr (temp_string, L'@') != NULL) && (wcschr (temp_string, L'.') != NULL)));
+      }
       // else was it the validation button ?
       else if (wParam_loword == BUTTON_VALIDATECODE)
+      {
-         // query the remote server for the code associated with this email. If it fails, ask why.
+         // enable the validation button only if the PayPal email field has data
-         candidate_code = RetrieveActivationCode (candidate_email, &failure_reason);
+         GetDlgItemText (hWnd, EDITBOX_REGISTRATION_EMAILADDRESS, temp_string, WCHAR_SIZEOF (temp_string));
+         // query the remote server for the code associated with this email. If it fails, ask why.
-         // was there a problem retrieving the code ?
+         if (!RetrieveActivationCode (temp_string, &returned_code, NULL, &failure_reason)
-         if ((failure_reason != NULL) && (failure_reason[0] != 0))
+             || ((failure_reason != NULL) && (failure_reason[0] != 0)))
             MessageBox (hWnd, failure_reason, PROGRAM_NAME, MB_ICONERROR | MB_OK); // registration failed. Display an error and DON'T make the dialog box disappear
          // else is the retrieved data correct ?
-         else if (IsRegistrationCorrect (candidate_email, candidate_code))
+         else if (IsRegistrationCorrect (temp_string, returned_code))
+         {
             // if so, save activation email and activation code
-            wcscpy_s (options.registration.user_email, WCHAR_SIZEOF (options.registration.user_email), candidate_email);
+            wcscpy_s (options.registration.user_email, WCHAR_SIZEOF (options.registration.user_email), temp_string);
-            options.registration.activation_code = candidate_code;
+            options.registration.activation_code = returned_code;
             MessageBox (hWnd, LOCALIZE (L"Registration_ThankYou"), PROGRAM_NAME, MB_ICONINFORMATION | MB_OK);
             EndDialog (hWnd, 0); // then display a thank you dialog box and make the dialog box disappear
+         }
          // else the supplied data is wrong
       else if (wParam_loword == BUTTON_DONATE)
+      {
          MessageBox (hWnd, LOCALIZE (L"Registration_DontForget"), PROGRAM_NAME, MB_ICONWARNING | MB_OK); // users need to be reminded that they MUST write their email in the activation form
          if (wcscmp (languages[language_id].name, L"French") == 0)
-            ShellExecute (NULL, L"open", PAYPAL_URL_FR, NULL, NULL, SW_MAXIMIZE); // open PayPal in French in the default browser, maximized
+            wcscpy_s (temp_string, sizeof (temp_string), PAYPAL_URL_FR); // select the French PayPal page
          else
-            ShellExecute (NULL, L"open", PAYPAL_URL_XX, NULL, NULL, SW_MAXIMIZE); // open PayPal in English (default) the default browser, maximized
+            wcscpy_s (temp_string, sizeof (temp_string), PAYPAL_URL_XX); // select the international (English) PayPal page
+         wcscat_s (temp_string, sizeof (temp_string), transaction_uuid); // in all cases, append the transaction UUID that our server generated for us
+         ShellExecute (NULL, L"open", temp_string, NULL, NULL, SW_MAXIMIZE); // open PayPal in the default browser, maximized
          was_donatebutton_clicked = true; // remember the user clicked the Donate button
+      }
       // else was it the status bar hyperlink ?
       else if (wParam_loword == STATICTEXT_REGISTRATION_STATUSBAR)
    // call the default dialog message processing function to keep things going
    return (false);
+}
-static unsigned __int32 RetrieveActivationCode (wchar_t *candidate_email, wchar_t **failure_reason)
+static bool RetrieveActivationCode (wchar_t *candidate_email_or_uuid, unsigned int *returned_code, wchar_t **returned_email, wchar_t **failure_reason)
+{
-   // this function queries the remote server for registration status. If OK, the received code is returned.
+   // this function queries the remote server for registration status. If OK, the function returns TRUE and
+   // the code and email are returned in the returned_code and returned_email pointers, and failure_reason
-   // On error, 0 is returned and error_string points to the cause of the error (as reported by the server)
+   // is set to point to a NULL string. On error, FALSE is returned and failure_reason points to the cause
+   // of the error (localized). If candidate_email_or_uuid is a NULL string, only a server reachability test
+   // is performed.
+   #define REGISTRATION_HOST "pmbaty.com"
-   // which is stored in a static buffer in this very function.
+   #define REGISTRATION_SCRIPT "/chess/whatsmycode.php"
    static char http_buffer[1024]; // used both for request and reply
+   static char ascii_email_or_uuid[128];
-   static char ascii_email[128];
+   static wchar_t wide_email[128];
    struct sockaddr_in service;
    struct hostent *hostinfo;
    char *data_start;
    int write_index;
    int read_index;
    int length;
    SOCKET s;
    // get our distribution server's IP address from the host name
-   hostinfo = gethostbyname ("pmbaty.com");
+   hostinfo = gethostbyname (REGISTRATION_HOST);
    if (hostinfo == NULL)
+   {
+      if (failure_reason != NULL)
-      *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
+         *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
-      return (0); // couldn't resolve hostname, return an error condition
+      return (false); // couldn't resolve hostname, return an error condition
+   }
    // fill in the sockaddr server structure with the server hostinfo data
    service.sin_family = AF_INET;
    service.sin_addr.s_addr = inet_addr (inet_ntoa (*(struct in_addr *) hostinfo->h_addr_list[0]));
    service.sin_port = htons (80); // connect to webserver there (port 80)
    // create our socket
    if ((s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET)
+   {
+      if (failure_reason != NULL)
-      *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
+         *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
       return (0); // couldn't create socket, return an error condition
+   }
    // connect to the distributor's webserver using that socket
    if (connect (s, (struct sockaddr *) &service, sizeof (service)) == -1)
+   {
+      closesocket (s);
+      if (failure_reason != NULL)
-      *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
+         *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
       return (0); // unable to connect to webserver, return an error condition
+   }
    // build the HTTP query and send it
+   if (candidate_email_or_uuid != NULL)
-   ConvertTo7BitASCII (ascii_email, sizeof (ascii_email), candidate_email);
+      ConvertTo7BitASCII (ascii_email_or_uuid, sizeof (ascii_email_or_uuid), candidate_email_or_uuid);
    sprintf_s (http_buffer, sizeof (http_buffer),
-      "GET /chess/whatsmycode.php?email=%s HTTP/1.1\r\n"
+              "GET " REGISTRATION_SCRIPT "?%s=%s HTTP/1.1\r\n"
-      "Host: pmbaty.com\r\n"
+              "Host: " REGISTRATION_HOST "\r\n"
-      "Connection: close\r\n"
+              "Connection: close\r\n"
-      "\r\n", ascii_email);
+              "\r\n",
+              (candidate_email_or_uuid != NULL ? (wcschr (candidate_email_or_uuid, '@') != NULL ? "email" : "uuid") : "test"),
+              (candidate_email_or_uuid != NULL ? ascii_email_or_uuid : "1"));
    length = strlen (http_buffer);
    write_index = send (s, http_buffer, length, 0); // send the HTTP query
    if (write_index != length)
+   {
+      closesocket (s);
+      if (failure_reason != NULL)
-      *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
+         *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
       return (0); // unable to send HTTP query, return an error condition
+   }
    // read the reply (10 seconds timeout)
    http_buffer[0] = 0;
    read_index = RecvWithTimeout (s, 10.0f, http_buffer, sizeof (http_buffer), 0);
    if (read_index < 1)
+   {
+      closesocket (s);
+      if (failure_reason != NULL)
-      *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
+         *failure_reason = LOCALIZE (L"Registration_NetworkFailure");
       return (0); // empty or erroneous HTTP reply, return an error condition
+   }
    closesocket (s); // finished communicating, close TCP socket
    // terminate recv buffer and see where the useful data starts
    http_buffer[read_index] = 0;
    //MessageBoxA (NULL, http_buffer, "HTTP response", MB_OK);
-   if ((data_start = strstr (http_buffer, "Success=")) != NULL)
+   if (candidate_email_or_uuid == NULL)
+   {
+      if (failure_reason != NULL)
-      *failure_reason = L""; // no error, set an empty string as the failure reason
+         *failure_reason = L""; // no error, set an empty string as the failure reason
+      if ((data_start = strchr (http_buffer, '\n')) != NULL)
+         *data_start = 0; // see where the first reply line ends and break the string there
+      return ((strncmp (http_buffer, "HTTP/", 5) == 0) && (strstr (http_buffer, " 200 ") != NULL)); // reachability test only
+   }
+   else if ((data_start = strstr (http_buffer, "Success=")) != NULL)
+   {
+      if (failure_reason != NULL)
+         *failure_reason = L""; // no error, set an empty string as the failure reason
+      if (returned_code != NULL)
-      return ((unsigned __int32) _atoi64 (&data_start[strlen ("Success=")])); // and return the candidate code we got
+         *returned_code = (unsigned int) _atoi64 (&data_start[strlen ("Success=")]);
+      if (returned_email != NULL)
+      {
+         data_start = strchr (data_start, ',');
+         if (data_start != NULL)
+         {
+            if (strchr (data_start, '\r') != 0)
+               *strchr (data_start, '\r') = 0; // don't report the newline
+            ConvertToWideChar (wide_email, WCHAR_SIZEOF (wide_email), data_start + 1);
+            *returned_email = wide_email;
+         }
+         else
+            *returned_email = L"";
+      }
+      return (true); // and return the candidate code we got
+   }
    else if ((data_start = strstr (http_buffer, "Error=")) != NULL)
+   {
+      if (failure_reason != NULL)
+      {
-      data_start += strlen ("Error=");
+         data_start += strlen ("Error=");
-      if (strchr (data_start, '\r') != NULL) *strchr (data_start, '\r') = 0;
+         if (strchr (data_start, '\r') != NULL) *strchr (data_start, '\r') = 0;
-      if (strchr (data_start, '\n') != NULL) *strchr (data_start, '\n') = 0;
+         if (strchr (data_start, '\n') != NULL) *strchr (data_start, '\n') = 0;
-      if      (_stricmp (data_start, "WrongEmail") == 0)         *failure_reason = LOCALIZE (L"Registration_WrongEmail");
+         if      (_stricmp (data_start, "WrongEmail") == 0)         *failure_reason = LOCALIZE (L"Registration_WrongEmail");
-      else if (_stricmp (data_start, "UnknownEmail") == 0)       *failure_reason = LOCALIZE (L"Registration_UnknownEmail");
+         else if (_stricmp (data_start, "UnknownEmail") == 0)       *failure_reason = LOCALIZE (L"Registration_UnknownEmail");
-      else if (_stricmp (data_start, "TooManyActivations") == 0) *failure_reason = LOCALIZE (L"Registration_TooManyActivations");;
+         else if (_stricmp (data_start, "TooManyActivations") == 0) *failure_reason = LOCALIZE (L"Registration_TooManyActivations");;
+      }
-      return (0); // server returned an error, return an error condition
+      return (false); // server returned an error, return an error condition
+   }
+   if (failure_reason != NULL)
-   *failure_reason = LOCALIZE (L"Registration_NetworkFailure"); // this should never happen
+      *failure_reason = LOCALIZE (L"Registration_NetworkFailure"); // this should never happen
-   return (0); // server returned an error, return an error condition
+   return (false); // server returned an error, return an error condition
+   #undef REGISTRATION_SCRIPT
+   #undef REGISTRATION_HOST
+}

Subversion Repositories Games.Chess Giants

Games.Chess Giants/dialog/dialog_registration.cpp – Rev 179 → 185