apps/kdepasswd/kcm/chfnprocess.cpp

   1 /***************************************************************************
   2  *   Copyright 2003 Braden MacDonald <bradenm_k@shaw.ca>                   *
   3  *   Copyright 2003 Ravikiran Rajagopal <ravi@ee.eng.ohio-state.edu>       *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License (version 2) as   *
   7  *   published by the Free Software Foundation.                            *
   8  *                                                                         *
   9  ***************************************************************************/
  10
  11 /**
  12  * @file Change a user's 'finger' information, specifically their full name.
  13  * derived from kdepasswd.
  14  */
  15
  16 #include "chfnprocess.h"
  17
  18 #include <unistd.h>
  19 #include <stdlib.h>
  20
  21 #include <kdesu/process.h>
  22 #include <kdebug.h>
  23
  24 int ChfnProcess::exec(const char *pass, const char *name)
  25 {
  26   // Try to set the default locale to make the parsing of the output
  27   // of `chfn' easier.
  28   putenv((char*)"LC_ALL=C");
  29
  30   QList<QByteArray> args;
  31       args += "-f";
  32       args += name;
  33   int ret = KDESu::PtyProcess::exec("chfn", args);
  34   if (ret < 0)
  35       return ChfnNotFound;
  36
  37   ret = ConverseChfn(pass);
  38
  39   waitForChild();
  40   return ret;
  41 }
  42
  43
  44 /*
  45  * The actual work.
  46  * Return values: -1 = unknown error, 0 = ok, >0 = error code.
  47  */
  48 int ChfnProcess::ConverseChfn(const char *pass)
  49 {
  50   int status=-1;
  51
  52   QByteArray line;
  53   while(1)
  54   {
  55     line = readLine();
  56
  57     if ( line.isEmpty() )
  58       continue;// discard line
  59     else if ( line.contains( "Permission denied" ) )
  60     {
  61       status=MiscError;
  62       m_Error=line;
  63       break;
  64     }
  65
  66     if ( line.contains( "Password: " )/*isPrompt( line, "password" )*/ )
  67     {
  68       WaitSlave();
  69       write(fd(), pass, strlen(pass));
  70       write(fd(), "\n", 1);
  71     }
  72
  73     line = readLine(); // Let's see what the outcome was
  74
  75     if ( line.contains( "Changing finger info" ) )
  76     {
  77       // do nothing
  78     }
  79     else if ( line.contains( "information changed" ) )
  80     {
  81       status=0;
  82       break;
  83     }
  84     else if ( line.isEmpty() )
  85     {
  86       status=0;
  87       break;
  88     }
  89     else if ( line.contains( "Password error" ) || line.contains("Incorrect password") )
  90     {
  91       status=PasswordError;
  92       break;
  93     }
  94     else
  95     {
  96       status=MiscError;
  97       m_Error=line;
  98       break;
  99     }
 100   }
 101   return status;
 102 }
 103