tools/bktrans.cc

   1 //
   2 // ktrans.cc - print human readable version of usbfs_snoop kernel log
   3 //
   4
   5 /*
   6     Copyright (C) 2005-2013, Net Direct Inc. (http://www.netdirect.ca/)
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License as published by
  10     the Free Software Foundation; either version 2 of the License, or
  11     (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.
  16
  17     See the GNU General Public License in the COPYING file at the
  18     root directory of this project for more details.
  19 */
  20
  21 #include <iostream>
  22 #include <iomanip>
  23 #include <sstream>
  24 #include <string>
  25 #include <string.h>
  26 #include <barry/data.h>
  27 #include "i18n.h"
  28
  29 using namespace std;
  30
  31 void Usage()
  32 {
  33         cout << "ktrans - usbfs_snoop kernel log translator\n"
  34                 "\n"
  35                 "\tUsage:   ktrans logmarker < log\n"
  36                 "\n"
  37                 "\tExample:  ktrans \"kernel: \" < /var/log/kern.log\n"
  38                 "\n";
  39 }
  40
  41 bool IsHexData(const char *logmarker, const char *str)
  42 {
  43         str = strstr(str, logmarker);
  44         if( !str )
  45                 return false;
  46         str += strlen(logmarker);
  47
  48         if( strstr(str, "data ") || strstr(str, "data: ") ) {
  49                 // looks like a data line, make sure data from there on out
  50                 // is hex data
  51
  52                 // skip "data"
  53                 str = strstr(str, "data") + 4;
  54                 for( ; *str == ':' || *str == ' '; str++ )
  55                         ;
  56
  57                 while( *str ) {
  58                         if( !( isdigit(*str) || *str == ' ' ||
  59                             (*str >= 'a' && *str <= 'f')) )
  60                                 return false;
  61                         str++;
  62                 }
  63
  64                 return true;
  65         }
  66         else {
  67                 while( *str ) {
  68                         if( !( isdigit(*str) || *str == ' ' ||
  69                             (*str >= 'a' && *str <= 'f')) )
  70                                 return false;
  71                         str++;
  72                 }
  73                 return true;    // all data is numeric, so this is a continuation line
  74         }
  75 }
  76
  77 void SplitHex(const char *logmarker, const char *str, Barry::Data &data)
  78 {
  79         const char *hexptr = strstr(str, logmarker);
  80         if( !hexptr ) {
  81                 cout << str << endl;
  82                 return;
  83         }
  84         hexptr += strlen(logmarker);
  85         std::string readable(str, hexptr - str);
  86
  87         str = hexptr;
  88
  89         hexptr = strstr(str, "data ");
  90         if( hexptr ) {
  91                 hexptr += 5;
  92         }
  93         else {
  94                 hexptr = strstr(str, "data: ");
  95                 if( hexptr )
  96                         hexptr += 6;
  97         }
  98
  99         if( !hexptr )
 100                 hexptr = str;
 101
 102         for( ; *hexptr == ':' || *hexptr == ' '; hexptr++ )
 103                 ;
 104
 105         readable.append(str, hexptr - str);
 106         cout << readable << endl;
 107
 108         data.AppendHexString(hexptr);
 109 }
 110
 111 int main(int argc, char *argv[])
 112 {
 113         INIT_I18N(PACKAGE);
 114
 115         cout.sync_with_stdio(false);
 116
 117         if( argc < 2 ) {
 118                 Usage();
 119                 return 0;
 120         }
 121
 122         Barry::Data data;
 123         while( cin ) {
 124                 std::string buff;
 125                 getline(cin, buff);
 126                 if( IsHexData(argv[1], buff.c_str()) ) {
 127                         SplitHex(argv[1], buff.c_str(), data);
 128                 }
 129                 else {
 130                         if( data.GetSize() ) {
 131                                 cout << data;
 132                                 data.Zap();
 133                         }
 134                         cout << buff << "\n";
 135                 }
 136         }
 137
 138         if( data.GetSize() ) {
 139                 cout << data;
 140         }
 141 }
 142