src/Device/Driver/CAI302/Logger.cpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #include "Internal.hpp"
  25 #include "Protocol.hpp"
  26 #include "Device/Port/Port.hpp"
  27 #include "Operation/Operation.hpp"
  28 #include "OS/ByteOrder.hpp"
  29 #include "IO/BinaryWriter.hpp"
  30
  31 #include <stdlib.h>
  32
  33 static void
  34 Copy(BrokenDate &dest, const CAI302::DateTime &src)
  35 {
  36   dest.year = src.year + 2000; /* Y2100 problem! */
  37   dest.month = src.month;
  38   dest.day = src.day;
  39 }
  40
  41 static void
  42 Copy(BrokenTime &dest, const CAI302::DateTime &src)
  43 {
  44   dest.hour = src.hour;
  45   dest.minute = src.minute;
  46   dest.second = src.second;
  47 }
  48
  49 static void
  50 Copy(RecordedFlightInfo &dest, unsigned index,
  51      const CAI302::FileList::FileInfo &src)
  52 {
  53   Copy(dest.date, src.start_utc);
  54   Copy(dest.start_time, src.start_utc);
  55   Copy(dest.end_time, src.end_utc);
  56
  57   dest.internal.cai302 = index;
  58 }
  59
  60 static bool
  61 ReadFlightListInner(Port &port, RecordedFlightList &flight_list,
  62                     OperationEnvironment &env)
  63 {
  64   env.SetProgressRange(8);
  65
  66   for (unsigned i = 0; i < 8 && !flight_list.full(); ++i) {
  67     CAI302::FileList file_list;
  68     if (!CAI302::UploadFileList(port, i, file_list, env))
  69       break;
  70
  71     for (unsigned j = 0; j < 8 && !flight_list.full(); ++j) {
  72       const CAI302::FileList::FileInfo &file = file_list.files[j];
  73       if (file.start_utc.month > 0)
  74         Copy(flight_list.append(), i * 8 + j, file);
  75     }
  76
  77     env.SetProgressPosition(i);
  78   }
  79
  80   return !flight_list.empty() && !env.IsCancelled();
  81 }
  82
  83 bool
  84 CAI302Device::ReadFlightList(RecordedFlightList &flight_list,
  85                              OperationEnvironment &env)
  86 {
  87   if (!EnableBulkMode(env))
  88     return false;
  89
  90   if (!UploadMode(env)) {
  91     DisableBulkMode(env);
  92     return false;
  93   }
  94
  95   if (!ReadFlightListInner(port, flight_list, env)) {
  96     mode = Mode::UNKNOWN;
  97     DisableBulkMode(env);
  98     return false;
  99   }
 100
 101   DisableBulkMode(env);
 102   return true;
 103 }
 104
 105 static bool
 106 DownloadFlightInner(Port &port, const RecordedFlightInfo &flight,
 107                     const TCHAR *path, OperationEnvironment &env)
 108 {
 109   assert(flight.internal.cai302 < 64);
 110
 111   BinaryWriter writer(path);
 112   if (writer.HasError())
 113     return false;
 114
 115   CAI302::FileASCII file_ascii;
 116   if (!UploadFileASCII(port, flight.internal.cai302, file_ascii, env) ||
 117       env.IsCancelled())
 118     return false;
 119
 120   unsigned bytes_per_block = ReadUnalignedBE16(&file_ascii.bytes_per_block);
 121   unsigned num_blocks = ReadUnalignedBE16(&file_ascii.num_blocks);
 122   env.SetProgressRange(num_blocks);
 123
 124   unsigned allocated_size = sizeof(CAI302::FileData) + bytes_per_block;
 125   void *allocated = malloc(allocated_size);
 126   CAI302::FileData *header = (CAI302::FileData *)allocated;
 127   void *data = header + 1;
 128
 129   unsigned current_block = 0;
 130   unsigned valid_bytes;
 131   do {
 132     int i = UploadFileData(port, true, header, allocated_size, env);
 133     if (i < (int)sizeof(*header)) {
 134       free(allocated);
 135       return false;
 136     }
 137
 138     i -= sizeof(*header);
 139
 140     valid_bytes = FromBE16(header->valid_bytes);
 141     if ((unsigned)i < valid_bytes) {
 142       free(allocated);
 143       return false;
 144     }
 145
 146     if (!writer.Write(data, 1, valid_bytes)) {
 147       free(allocated);
 148       return false;
 149     }
 150
 151     env.SetProgressPosition(current_block++);
 152   } while (valid_bytes == bytes_per_block);
 153
 154   free(allocated);
 155
 156   CAI302::FileSignatureASCII signature;
 157   if (!CAI302::UploadFileSignatureASCII(port, signature, env))
 158     return false;
 159
 160   valid_bytes = FromBE16(signature.size);
 161   if (valid_bytes > sizeof(signature.signature))
 162     return false;
 163
 164   if (!writer.Write(signature.signature, 1, valid_bytes))
 165     return false;
 166
 167   return true;
 168 }
 169
 170 bool
 171 CAI302Device::DownloadFlight(const RecordedFlightInfo &flight,
 172                              const TCHAR *path,
 173                              OperationEnvironment &env)
 174 {
 175   assert(flight.internal.cai302 < 64);
 176
 177   if (!EnableBulkMode(env))
 178     return false;
 179
 180   if (!UploadMode(env)) {
 181     DisableBulkMode(env);
 182     return false;
 183   }
 184
 185   if (!DownloadFlightInner(port, flight, path, env)) {
 186     mode = Mode::UNKNOWN;
 187     DisableBulkMode(env);
 188     return false;
 189   }
 190
 191   DisableBulkMode(env);
 192   return true;
 193 }