tools/rtlogger/logcnv/LogInfo.h

   1 /******************************************************************************
   2
   3                                Copyright (c) 2012
   4                             Lantiq Deutschland GmbH
   5
   6   For licensing information, see the file 'LICENSE' in the root folder of
   7   this software module.
   8
   9 ******************************************************************************/
  10 #ifndef __LOG_INFO_H__
  11 #define __LOG_INFO_H__
  12
  13 #include <string>
  14 #include <istream>
  15 #include <sstream>
  16 #include <iomanip>
  17
  18 #include "logdefs.h"
  19
  20 using namespace std;
  21
  22 #include "aux_utils.h"
  23 #include "logsrv_protocol.h"
  24
  25 class CLogInfo
  26 {
  27   friend istream &operator>> (istream &is, CLogInfo &info);
  28
  29   class exc_bad_info_magic : public exc_basic
  30   {
  31   public:
  32     exc_bad_info_magic (uint32 magic) {
  33       ostringstream ss;
  34       ss << "Incorrect Log Info magic:" << hex << showbase << setfill('0') << setw(8) << magic ;
  35       m_str = ss.str();
  36     }
  37   };
  38   class exc_bad_info_size : public exc_basic
  39   {
  40   public:
  41     exc_bad_info_size (uint32 size) {
  42       ostringstream ss;
  43       ss << "Incorrect Log Info size:" << hex << showbase << setfill('0') << setw(8) << size ;
  44       m_str = ss.str();
  45     }
  46   };
  47   class exc_bad_info_ver_major : public exc_basic
  48   {
  49   public:
  50     exc_bad_info_ver_major (uint16 major, uint16 supported) {
  51       ostringstream ss;
  52       ss << "Incorrect Log Info major: " << major << " (required: " << supported <<")";
  53       m_str = ss.str();
  54     }
  55   };
  56
  57 public:
  58   CLogInfo(void)
  59   {
  60     memset(&m_info, 0, sizeof(m_info));
  61   }
  62
  63   ~CLogInfo()
  64   { }
  65
  66 protected:
  67   void Read (istream &in_s) {
  68     try {
  69       in_s.read((char *)&m_info, sizeof(m_info));
  70     }
  71     catch (const ios_base::failure &/*ex*/) {
  72       if (in_s.eof()) {
  73         /* EOF is not an error in our case */
  74         return;
  75       }
  76       /* Other stream error */
  77       throw; /* throw this exception up */
  78     }
  79
  80     m_info.magic = ntohl(m_info.magic);
  81     if (m_info.magic != LOGSRV_INFO_MAGIC) {
  82       throw exc_bad_info_magic(m_info.magic);
  83     }
  84
  85     m_info.size = ntohl(m_info.size);
  86     if (m_info.size != sizeof(m_info)) {
  87       throw exc_bad_info_size(m_info.size);
  88     }
  89
  90     m_info.log_ver_major = ntohs(m_info.log_ver_major);
  91     if (m_info.log_ver_major != RTLOGGER_VER_MAJOR) {
  92       throw exc_bad_info_ver_major(m_info.log_ver_major, RTLOGGER_VER_MAJOR);
  93     }
  94
  95     m_info.log_ver_minor = ntohs(m_info.log_ver_minor);
  96   }
  97
  98   struct logsrv_info m_info;
  99 };
 100
 101 istream &operator>> (istream &is, CLogInfo &info)
 102 {
 103   info.Read(is);
 104   return is;
 105 }
 106
 107 #endif /* __LOG_INFO_H__ */