wvdial/pppmon.cc

   1
   2
   3 // not finished
   4 // author: arvin@suse.de
   5
   6
   7 #include <stdio.h>
   8 #include <unistd.h>
   9 #include <stdlib.h>
  10 #include <errno.h>
  11 #include <string.h>
  12 #include <wvstream.h>
  13
  14 #include "wvdialmon.h"
  15 #include "wvfork.h"
  16 #include "wvfdstream.h"
  17
  18
  19 WvStream *pppd_log = NULL;      // to read messages of pppd
  20
  21 WvDialMon pppd_mon;
  22
  23
  24 int main( int argc, char ** argv )
  25 {
  26   int argc_ppp = 0;
  27   char *argv_ppp[ argc+10 ];
  28
  29   argv_ppp[argc_ppp++] = "/usr/sbin/pppd";
  30
  31   for( int i = 1; i < argc; i++ )
  32     argv_ppp[argc_ppp++] = argv[i];
  33
  34
  35   // open a pipe to access the messages of pppd
  36   int pppd_msgfd[2];
  37   if( pipe( pppd_msgfd ) == -1 ) {
  38     fprintf( stderr, "pipe failed: %s\n", strerror(errno) );
  39     exit( EXIT_FAILURE );
  40   }
  41
  42   char buffer[20];
  43   sprintf( buffer, "%d", pppd_msgfd[1] );
  44   argv_ppp[argc_ppp++] = "logfd";
  45   argv_ppp[argc_ppp++] = buffer;
  46
  47   pppd_log = new WvFDStream( pppd_msgfd[0] );
  48
  49   pppd_mon.setconnectmsg( "Connected..." );
  50
  51
  52   /*
  53   for( int i = 0; i < argc_ppp; i++ )
  54     printf( "%s\n", argv_ppp[i] );
  55   */
  56
  57
  58   // fork and exec pppd
  59   pid_t pid = wvfork();
  60
  61   if( pid == (pid_t) 0 ) {      // we are the child
  62     argv_ppp[argc_ppp] = NULL;
  63     execv( argv_ppp[0], argv_ppp );
  64     fprintf( stderr, "exec failed: %s\n", strerror(errno) );
  65     exit( EXIT_FAILURE );
  66   }
  67
  68   if( pid < (pid_t) 0 ) {       // the fork failed
  69     fprintf( stderr, "error: can't fork child process\n" );
  70     exit( EXIT_FAILURE );
  71   }
  72
  73
  74   /*
  75   ppp_pipe = new WvPipe( argv_ppp[0], argv_ppp, false, false, false );
  76   */
  77
  78
  79   // install signals
  80
  81
  82
  83   for( ;; ) {
  84
  85     // see if pppd is still alive
  86
  87
  88
  89
  90     // now watch for messages and output to stdout
  91
  92     if( pppd_log != NULL && pppd_log->isok() ) {
  93
  94       char *line;
  95
  96       do {
  97
  98         line = pppd_log->blocking_getline( 100 );
  99         if( line != NULL ) {
 100           char *buffer1 = pppd_mon.analyse_line( line );
 101           if( buffer1 != NULL && buffer1[0] != '\0' ) {
 102             char buffer2[ strlen( buffer1 ) + 10 ];
 103             sprintf( buffer2, "pppd: %s", buffer1 );
 104             fprintf( stdout, "%s", buffer2 );
 105           }
 106         }
 107       } while( line != NULL );
 108
 109     }
 110
 111   }
 112
 113   exit( EXIT_SUCCESS );
 114 }