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Member "netxms-3.8.166/src/server/tools/nxadm/comm.cpp" (23 Feb 2021, 2423 Bytes) of package /linux/misc/netxms-3.8.166.tar.gz:


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    1 /* 
    2 ** NetXMS - Network Management System
    3 ** Local administration tool
    4 ** Copyright (C) 2003-2015 Victor Kirhenshtein
    5 **
    6 ** This program is free software; you can redistribute it and/or modify
    7 ** it under the terms of the GNU General Public License as published by
    8 ** the Free Software Foundation; either version 2 of the License, or
    9 ** (at your option) any later version.
   10 **
   11 ** This program is distributed in the hope that it will be useful,
   12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
   13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   14 ** GNU General Public License for more details.
   15 **
   16 ** You should have received a copy of the GNU General Public License
   17 ** along with this program; if not, write to the Free Software
   18 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   19 **
   20 ** $module: comm.cpp
   21 **
   22 **/
   23 
   24 #include "nxadm.h"
   25 
   26 /**
   27  * Max message size
   28  */
   29 #define MAX_MSG_SIZE    4194304
   30 
   31 /**
   32  * Global data
   33  */
   34 SOCKET g_hSocket = -1;
   35 DWORD g_dwRqId = 1;
   36 
   37 /**
   38  * Message receiver
   39  */
   40 static SocketMessageReceiver *s_receiver = NULL;
   41 
   42 /**
   43  * Connect to server
   44  */
   45 BOOL Connect()
   46 {
   47    struct sockaddr_in sa;
   48 
   49    // Create socket
   50    g_hSocket = CreateSocket(AF_INET, SOCK_STREAM, 0);
   51    if (g_hSocket == INVALID_SOCKET)
   52    {
   53       printf("Error creating socket\n");
   54       return FALSE;
   55    }
   56 
   57    // Fill in address structure
   58    memset(&sa, 0, sizeof(sa));
   59    sa.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
   60    sa.sin_family = AF_INET;
   61    sa.sin_port = htons(LOCAL_ADMIN_PORT);
   62 
   63    // Connect to server
   64    if (connect(g_hSocket, (struct sockaddr *)&sa, sizeof(sa)) == -1)
   65    {
   66       printf("Cannot establish connection with server\n");
   67       closesocket(g_hSocket);
   68       g_hSocket = -1;
   69       return FALSE;
   70    }
   71 
   72    // Initialize receiver
   73    s_receiver = new SocketMessageReceiver(g_hSocket, 4096, MAX_MSG_SIZE);
   74    return TRUE;
   75 }
   76 
   77 /**
   78  * Disconnect from server
   79  */
   80 void Disconnect()
   81 {
   82    delete_and_null(s_receiver);
   83    if (g_hSocket != -1)
   84    {
   85       shutdown(g_hSocket, 2);
   86       closesocket(g_hSocket);
   87       g_hSocket = -1;
   88    }
   89 }
   90 
   91 /**
   92  * Send message to server
   93  */
   94 void SendMsg(NXCPMessage *pMsg)
   95 {
   96    NXCP_MESSAGE *pRawMsg;
   97 
   98    pRawMsg = pMsg->serialize();
   99    SendEx(g_hSocket, pRawMsg, ntohl(pRawMsg->size), 0, NULL);
  100    free(pRawMsg);
  101 }
  102 
  103 /**
  104  * Receive message
  105  */
  106 NXCPMessage *RecvMsg()
  107 {
  108    MessageReceiverResult result;
  109    return s_receiver->readMessage(INFINITE, &result);
  110 }