tools/bvncrelay.cc

   1 ///
   2 /// \file       bvncrelay.cc
   3 ///
   4 ///
   5
   6 /*
   7     Copyright (C) 2010, RealVNC Ltd.
   8
   9         Some parts are inspired from bjavaloader.cc
  10
  11     This program is free software; you can redistribute it and/or modify
  12     it under the terms of the GNU General Public License as published by
  13     the Free Software Foundation; either version 2 of the License, or
  14     (at your option) any later version.
  15
  16     This program is distributed in the hope that it will be useful,
  17     but WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19
  20     See the GNU General Public License in the COPYING file at the
  21     root directory of this project for more details.
  22 */
  23
  24
  25 #include <barry/barry.h>
  26 #include <iostream>
  27 #include <vector>
  28 #include <string>
  29 #include <cstring>
  30 #include <algorithm>
  31 #include <getopt.h>
  32 #include <fstream>
  33 #include <string.h>
  34 #include <sys/types.h>
  35 #include <sys/socket.h>
  36 #include <netinet/in.h>
  37 #include <arpa/inet.h>
  38
  39 #include "i18n.h"
  40
  41 using namespace std;
  42 using namespace Barry;
  43
  44 class TCPWriter : public Barry::Mode::VNCServerDataCallback
  45 {
  46 public:
  47     void SetSocket(int socket, bool& keepGoing)
  48     {
  49         cfd = socket;
  50         continuePtr = &keepGoing;
  51     }
  52
  53     void DataReceived(Data& data)
  54     {
  55         std::cerr << "From BB: ";
  56         data.DumpHex(std::cerr);
  57         std::cerr << "\n";
  58
  59         size_t toWrite = data.GetSize();
  60         size_t written = 0;
  61
  62         while (written < toWrite)
  63         {
  64             ssize_t writtenThisTime = write(cfd, &(data.GetData()[written]), toWrite - written);
  65             if (writtenThisTime < 0)
  66             {
  67                 *continuePtr = false;
  68             }
  69             else
  70             {
  71                 written += writtenThisTime;
  72             }
  73         }
  74     }
  75
  76 private:
  77     bool* continuePtr;
  78     int cfd;
  79 };
  80
  81 void Usage()
  82 {
  83    int major, minor;
  84    const char *Version = Barry::Version(major, minor);
  85
  86    cerr
  87    << "bvncrelay - Command line USB Blackberry VNC Relay\n"
  88    << "        Copyright 2010, RealVNC Ltd.\n"
  89    << "        Using: " << Version << "\n"
  90    << "\n"
  91    << "   -h        This help\n"
  92    << "   -s        List sibling in module list\n"
  93    << "   -p pin    PIN of device to talk with\n"
  94    << "             If only one device is plugged in, this flag is optional\n"
  95    << "   -P pass   Simplistic method to specify device password\n"
  96    << "   -v        Dump protocol data during operation\n"
  97    << "\n"
  98    << endl;
  99 }
 100
 101 static void handle_error(const char* text)
 102 {
 103     throw new std::runtime_error(text);
 104 }
 105
 106
 107 int main(int argc, char *argv[])
 108 {
 109         INIT_I18N(PACKAGE);
 110
 111         cout.sync_with_stdio(true);     // leave this on, since libusb uses
 112                                         // stdio for debug messages
 113
 114         try {
 115
 116                 uint32_t pin = 0;
 117                 bool list_siblings = false,
 118                         data_dump = false;
 119                 string password;
 120                 vector<string> params;
 121                 string busname;
 122                 string devname;
 123                 string iconvCharset;
 124                 Usb::EndpointPair epOverride;
 125
 126                 // process command line options
 127                 for(;;) {
 128                         int cmd = getopt(argc, argv, "hsp:P:v");
 129                         if( cmd == -1 )
 130                                 break;
 131
 132                         switch( cmd )
 133                         {
 134                         case 'p':       // Blackberry PIN
 135                                 pin = strtoul(optarg, NULL, 16);
 136                                 break;
 137
 138                         case 'P':       // Device password
 139                                 password = optarg;
 140                                 break;
 141
 142                         case 's':       // turn on listing of sibling modules
 143                                 list_siblings = true;
 144                                 break;
 145
 146                         case 'v':       // data dump on
 147                                 data_dump = true;
 148                                 break;
 149
 150                         case 'h':       // help
 151                         default:
 152                                 Usage();
 153                                 return 0;
 154                         }
 155                 }
 156
 157                 argc -= optind;
 158                 argv += optind;
 159
 160                 if( argc < 1 ) {
 161                         cerr << "missing command" << endl;
 162                         Usage();
 163                         return 1;
 164                 }
 165
 166                 // Fetch command from remaining arguments
 167                 string cmd = argv[0];
 168                 argc --;
 169                 argv ++;
 170
 171                 // Put the remaining arguments into an array
 172                 for (; argc > 0; argc --, argv ++) {
 173                         params.push_back(string(argv[0]));
 174                 }
 175
 176                 // Initialize the barry library.  Must be called before
 177                 // anything else.
 178                 Barry::Init(data_dump);
 179
 180                 // Probe the USB bus for Blackberry devices and display.
 181                 // If user has specified a PIN, search for it in the
 182                 // available device list here as well
 183                 Barry::Probe probe;
 184                 int activeDevice = probe.FindActive(pin);
 185                 if( activeDevice == -1 ) {
 186                         cerr << "No device selected, or PIN not found" << endl;
 187                         return 1;
 188                 }
 189
 190         // Create the thing which will write onto TCP
 191         TCPWriter tcpwriter;
 192
 193         // Start a thread to handle any data arriving from
 194         // the BlackBerry.
 195         auto_ptr<SocketRoutingQueue> router;
 196         router.reset(new SocketRoutingQueue);
 197         router->SpinoffSimpleReadThread();
 198
 199                 // Create our controller object
 200                 Barry::Controller con(probe.Get(activeDevice), *router);
 201                 Barry::Mode::VNCServer vncrelay(con, tcpwriter);
 202
 203                 //
 204                 // execute each mode that was turned on
 205                 //
 206                 vncrelay.Open(password.c_str());
 207
 208         // Now start to read from TCP and get ready to write
 209         // to the BlackBerry.
 210         int sfd = socket(AF_INET, SOCK_STREAM, 0);
 211         if (sfd == -1)
 212             handle_error("socket");
 213
 214         sockaddr_in my_addr;
 215         memset(&my_addr, 0, sizeof(struct sockaddr_in));
 216                                /* Clear structure */
 217         my_addr.sin_family = AF_INET;
 218         my_addr.sin_port = 2000;
 219         my_addr.sin_addr.s_addr = INADDR_ANY;
 220
 221         if (bind(sfd, (struct sockaddr *) &my_addr,
 222                 sizeof(struct sockaddr_in)) == -1)
 223             handle_error("bind");
 224
 225         if (listen(sfd, 1) == -1)
 226             handle_error("listen");
 227
 228         /* Now we can accept incoming connections one
 229            at a time using accept(2) */
 230
 231         sockaddr_in peer_addr;
 232         socklen_t peer_addr_size = sizeof(struct sockaddr_in);
 233         int cfd = accept(sfd, (struct sockaddr *) &peer_addr,
 234                      &peer_addr_size);
 235         if (cfd == -1)
 236             handle_error("accept");
 237
 238
 239         std::cerr << "Accepted\n";
 240
 241         bool running = true;
 242         tcpwriter.SetSocket(cfd, running);
 243
 244         unsigned char buf[2000];
 245         while (running)
 246         {
 247             size_t haveRead = read(cfd, buf, 2000);
 248             if (haveRead > 0)
 249             {
 250                 Data toWrite(buf, haveRead);
 251                 vncrelay.Send(toWrite);
 252             }
 253             else if (haveRead < 0)
 254             {
 255                 running = false;
 256             }
 257         }
 258         }
 259         catch( Usb::Error &ue) {
 260                 std::cout << endl;      // flush any normal output first
 261                 std::cerr << "Usb::Error caught: " << ue.what() << endl;
 262                 return 1;
 263         }
 264         catch( Barry::Error &se ) {
 265                 std::cout << endl;
 266                 std::cerr << "Barry::Error caught: " << se.what() << endl;
 267                 return 1;
 268         }
 269         catch( std::exception &e ) {
 270                 std::cout << endl;
 271                 std::cerr << "std::exception caught: " << e.what() << endl;
 272                 return 1;
 273         }
 274
 275         return 0;
 276 }
 277