tools/pppob.cc

   1 ///
   2 /// \file       pppob.cc
   3 ///             In the same vein as pppoe, used with pppd to create a
   4 ///             pty tunnel and GPRS modem link.
   5 ///
   6
   7 /*
   8     Copyright (C) 2007-2008, Net Direct Inc. (http://www.netdirect.ca/)
   9
  10     This program is free software; you can redistribute it and/or modify
  11     it under the terms of the GNU General Public License as published by
  12     the Free Software Foundation; either version 2 of the License, or
  13     (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  18
  19     See the GNU General Public License in the COPYING file at the
  20     root directory of this project for more details.
  21 */
  22
  23 #include <barry/barry.h>
  24 #include <iomanip>
  25 #include <iostream>
  26 #include <fstream>
  27 #include <vector>
  28 #include <string>
  29 #include <getopt.h>
  30 #include <sys/select.h>
  31 #include <sys/time.h>
  32 #include <sys/types.h>
  33 #include <unistd.h>
  34
  35
  36 using namespace std;
  37 using namespace Barry;
  38
  39 bool data_dump = false;
  40
  41 void Usage()
  42 {
  43    int major, minor;
  44    const char *Version = Barry::Version(major, minor);
  45
  46    cerr
  47    << "pppob - PPP over Barry\n"
  48    << "        Copyright 2007-2008, Net Direct Inc. (http://www.netdirect.ca/)\n"
  49    << "        Using: " << Version << "\n"
  50    << "\n"
  51    << "   -p pin    PIN of device to talk with\n"
  52    << "             If only one device plugged in, this flag is optional\n"
  53    << "   -v        Dump protocol data during operation (debugging only!)\n"
  54    << endl;
  55 }
  56
  57 void SerialDataCallback(void *context, const unsigned char *data, int len)
  58 {
  59         if( len && data_dump )
  60                 barryverbose("ReadThread:\n" << Data(data, len));
  61
  62         while( len ) {
  63                 int written = write(1, data, len);
  64                 if( written > 0 ) {
  65                         len -= written;
  66                         data += written;
  67                 }
  68                 else {
  69                         barryverbose("Error in write()");
  70                 }
  71         }
  72 }
  73
  74 int main(int argc, char *argv[])
  75 {
  76         cout.sync_with_stdio(true);     // leave this on, since libusb uses
  77                                         // stdio for debug messages
  78
  79         try {
  80
  81                 uint32_t pin = 0;
  82
  83                 // process command line options
  84                 for(;;) {
  85                         int cmd = getopt(argc, argv, "p:v");
  86                         if( cmd == -1 )
  87                                 break;
  88
  89                         switch( cmd )
  90                         {
  91                         case 'p':       // Blackberry PIN
  92                                 pin = strtoul(optarg, NULL, 16);
  93                                 break;
  94
  95                         case 'v':       // data dump on
  96                                 data_dump = true;
  97                                 break;
  98
  99                         case 'h':       // help
 100                         default:
 101                                 Usage();
 102                                 return 0;
 103                         }
 104                 }
 105
 106                 // Initialize the barry library.  Must be called before
 107                 // anything else.
 108                 // Log to stderr, since stdout is for data in this program.
 109 //              std::ofstream log("/tmp/log", ios::app);
 110 //              Barry::Init(data_dump, &log);
 111                 Barry::Init(data_dump, &std::cerr);
 112
 113                 // Probe the USB bus for Blackberry devices and display.
 114                 // If user has specified a PIN, search for it in the
 115                 // available device list here as well
 116                 Barry::Probe probe;
 117                 int activeDevice = probe.FindActive(pin);
 118                 if( activeDevice == -1 ) {
 119                         if( pin )
 120                                 cerr << "PIN " << setbase(16) << pin
 121                                         << " not found" << endl;
 122                         cerr << "No device selected" << endl;
 123                         return 1;
 124                 }
 125
 126 /*
 127 // for serial mode, not yet supported
 128                 // Create our socket router and start thread to handle
 129                 // the USB reading, instead of creating our own thread.
 130                 SocketRoutingQueue router;
 131                 router.SpinoffSimpleReadThread();
 132
 133                 // Create our controller object using our threaded router.
 134                 Controller con(probe.Get(activeDevice), router);
 135
 136                 // Open desktop mode... this handles the password side
 137                 // of things
 138 //              Mode::Desktop desktop(con);
 139 //              desktop.Open(); // FIXME - support password here?
 140
 141 */
 142
 143                 // Create our controller object using our threaded router.
 144                 Controller con(probe.Get(activeDevice));
 145
 146                 // Open serial mode... the callback handles reading from
 147                 // USB and writing to stdout
 148                 Mode::IpModem modem(con, SerialDataCallback, 0);
 149                 modem.Open();
 150
 151                 // Read from stdin and write to USB, until
 152                 // stdin is closed
 153                 Data data;
 154                 int bytes_read;
 155                 fd_set rfds;
 156                 struct timeval tv;
 157                 int ret;
 158
 159                 FD_ZERO(&rfds);
 160
 161                 for(;;) {
 162                         // Need to use select() here, so that pppd doesn't
 163                         // hang when it tries to set the line discipline
 164                         // on our stdin.
 165
 166                         FD_SET(0, &rfds);
 167                         tv.tv_sec = 30;
 168                         tv.tv_usec = 0;
 169
 170                         ret = select(1, &rfds, NULL, NULL, &tv);
 171                         if( ret == -1 ) {
 172                                 perror("select()");
 173                         }
 174                         else if( ret && FD_ISSET(0, &rfds) ) {
 175                                 bytes_read = read(0, data.GetBuffer(), data.GetBufSize());
 176                                 if( bytes_read == 0 )
 177                                         break;
 178
 179                                 if( bytes_read > 0 ) {
 180                                         data.ReleaseBuffer(bytes_read);
 181                                         modem.Write(data);
 182                                 }
 183                         }
 184                 }
 185
 186                 barryverbose("Exiting");
 187
 188         }
 189         catch( std::exception &e ) {
 190                 cerr << "exception caught in main(): " << e.what() << endl;
 191                 return 1;
 192         }
 193
 194         return 0;
 195 }
 196