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File: sendmail.class
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Description: The Main Class
Class: sendmail_class
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Date: 12 years ago
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<?php

/*
  Class to manage the users of a sendmail installation
  Version : 0.1a
  Date : 09.30.2001
  Author : Oliver Schlag <cjcs@ipfb.net>

  This class only handles the flatfile style tables. If you have
  dbm files or other then this class is the wrong one. Perhaps you
  like to port this class to another data storage ;-) If you port
  it please drop me a line im intrested in every port.

  If you find an error please send me a message and i will try to
  fix it. Please send me as many informations as possible in your
  error message so i can try to reproduce and fix it.

  You can use this class without any restrictions, you can modify
  it and you can do what ever you want to do with it, BUT you're
  not allowed to sell this class or use it in a product you sell.

  Please note that this class is not for use in a webserver enviroment,
  this class is only for the cgi version of php. This class is
  to be used in PHP Scripts which will be run from shell or cron like
  bash scripts.

  Any other comments, except flames ;-), are welcome.

  Functiontable :

  sendmail_flat_class($aliastablepath,$virtusertablepath,$debuglevel,$log)
                      This is the constructor, the constructor will open
                      the files, create the array's.

                      Arguments :
                      $aliastablepath : Path to the alias file (normal /etc/mail/aliases)
                      $virtusertablepath : Path to the virtusertable file (normal /etc/mail/virtusertable)
                      $debuglevel : 0 = no Debug Output, 1 = Debug Output
                      $log : 1 = Log to the syslog, 0 = no logging

                      If you specify a log then the debug output will be
                      written into this log and there's no output on the
                      console.

  sendmail_flat_close()
                      This is the destructor, you need to call it on the
                      end of your work or nothing will be written into the
                      files and all your changes will be work for nothing.

                      Arguments :
                      This function did not take any arguments.

  add_virtual($address,$domain,$user)
                      This function will create a new entry in the virtual user
                      table.

                      If an error occurs the function returns -1 if all went
                      ok the function will return a 0.

                      Arguments :
                      $address : The part before the @ in the mail address
                      $domain : The part after the @ in the new mail address
                      $user : The user which should receive the mail to this address

  del_virtual($address,$domain)
                      This function will delete an entry in the virtual user
                      table.

                      If an error occurs the function returns -1 if all went
                      ok the function will return a 0.

                      Arguments :
                      $address : The part before the @ in the mail address
                      $domain : The part after the @ in the mail address

  add_route($source,$dest)
                      This function will create a virtual host route.

                      If an error occurs the function returns -1 if all went
                      ok the function will return a 0.

                      Arguments :
                      $source : The source domain
                      $dest : The destination domain

  del_route($source,$dest)
                      This function will delete a virtual host route

                      If an error occurs the function returns -1 if all went
                      ok the function will return a 0.

                      Arguments :
                      $source : The source domain
                      $dest : The destination domain

  add_alias($source,$dest)
                      This function will add an alias to the alias map

                      If an error occurs the function returns -1 if all went
                      ok the function will return a 0.

                      Arguments :
                      $source : The user which should be forwarded
                      $dest : The destination of the mails

  del_alias($source,$dest)
                      This function will delete an alias from the alias map

                      If an error occurs the function returns -1 if all went
                      ok the function will return a 0.

                      Arguments :
                      $source : The user which should be forwarded
                      $dest : The destination of the mails



  function template (only for me so i don't have to type so much :-) )

  function name ()
  {

    if ( $error != 0 )
    {
      return -1;
    }
    else
    {
      return 0;
    }
  }

*/

class sendmail
{

  var $ALIAS;
  var $VIRTUAL;
  var $ALIASPATH;
  var $VIRTUSERPATH;
  var $DEBUG;
  var $LOG;

  # Start of initalize function
  function sendmail_flat_class($aliastablepath,$virtusertablepath,$debuglevel,$log)
  {
    if ( $aliastablepath != "")
    {
      $this->ALIASPATH = $aliastablepath;
    }
    else
    {
      return -1;
    }

    if ( $virtusertablepath != "")
    {
      $this->VIRTUSERPATH = $virtusertablepath;
    }
    else
    {
      return -1;
    }

    if ( $debuglevel != "")
    {
      $this->DEBUG = 1;
    }
    else
    {
      $this->DEBUG = 0;
    }

    if ($log != "0")
    {
      $this->LOG = 1;
    }
    else
    {
      $this->LOG = 0;
    }


    # Open the alias file and create the array
    $ap = fopen($this->ALIASPATH,"r");

    if(!$ap)
    {
      # Output the Debug informations
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error opening alias file : $this->ALIASPATH");
      }
      return -1;
    }

    # Output the Debug informations
    if ($this->DEBUG)
    {
      syslog(LOG_DEBUG,"Aliastable opened");
    }

    while(!feof($ap))
    {
      $data = trim(fgets($ap,4096));
      if($data[0] != '#' && $data[0] != '')
      {
        $alias_temp = explode(":",$data);
        $key = trim($alias_temp[0]);
        $value = trim($alias_temp[1]);
        $this->ALIAS[$key] = $value;
      }
    }
    fclose($ap);

    # Output the Debug informations
    if ($this->DEBUG)
    {
      $cnr = count($this->ALIAS);
      syslog(LOG_DEBUG,"$cnr aliases read");
      syslog(LOG_DEBUG,"Aliastable closed");
    }

    # Open the virtusertable file and create the array
    $vp = fopen($this->VIRTUSERPATH,"r");

    if(!$vp)
    {
      # Output the Debug informations
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error opening virtusertable file : $this->VIRTUSERPATH");
      }
      return -1;
    }

    # Output the Debug informations
    if ($this->DEBUG)
    {
      syslog(LOG_DEBUG,"Virtusertable opened");
    }

    while(!feof($vp))
    {
      $data = trim(fgets($vp,4096));
      if($data[0] != '#' && $data[0] != '')
      {
        $virt_temp = explode("\t",$data);
        $key = trim($virt_temp[0]);
        $value = trim($virt_temp[1]);
        $this->VIRTUAL[$key] = $value;
      }
    }
    fclose($vp);

    # Output the Debug informations
    if ($this->DEBUG)
    {
      $cnr = count($this->VIRTUAL);
      syslog(LOG_DEBUG,"$cnr virtusers read");
      syslog(LOG_DEBUG,"Virtusertable closed");
    }

  }
  # End of initalize function

  # Start of destructor function
  function sendmail_flat_close()
  {

    # Write new alias Database (we copy the .new file later onto the original file)
    $new_alias = $this->ALIASPATH.".new";

    # Check if the .new file aread exist and delete it
    if (file_exists($new_alias))
    {
      unlink($new_alias);
    }
    $ap = fopen($new_alias,"w");
    if (!$ap)
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"New aliastable create error");
        return -1;
      }
    }

    foreach ($this->ALIAS as $key => $value)
    {
      $temp_alias = $key.":\t".$value."\n";
      fputs($ap,$temp_alias);
    }

    fclose($ap);
    if ($this->DEBUG)
    {
      syslog(LOG_DEBUG,"New Aliastable File created");
    }

    # Write a new virtualuser file
    $new_virtual = $this->VIRTUSERPATH.".new";

    # Check if the .new file aread exist and delete it
    if (file_exists($new_virtual))
    {
      unlink($new_virtual);
    }

    $vp = fopen($new_virtual,"w");
    if (!$vp)
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"New virtusertable create error");
        return -1;
      }
    }
    foreach ($this->VIRTUAL as $key => $value)
    {
      $temp_virtual = $key."\t".$value."\n";
      fputs($vp,$temp_virtual);
    }

    fclose($vp);
    if ($this->DEBUG)
    {
      syslog(LOG_DEBUG,"New virtusertable created");
    }

    # Now we need to copy the .new files onver the old files. To do this we first
    # rename the original files to .old and then rename the .new to the correct
    # filename. If this went ok we remove the .old files

    $old_alias = $this->ALIASPATH.".old";
    $old_virtual = $this->VIRTUSERPATH.".old";

    if (!rename($this->ALIASPATH,$old_alias))
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error renaming $this->ALIASPATH");
        return -1;
      }
    }
    else
    {
      if ($this->DEBUG)
      {
        syslog(LOG_DEBUG,"$this->ALIASPATH renamed to $old_alias");
      }
    }

    # Create the new alias table
    if (!rename($new_alias, $this->ALIASPATH))
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error renaming $new_alias");
        return -1;
      }
    }
    else
    {
      if ($this->DEBUG)
      {
        syslog(LOG_DEBUG,"$new_alias renamed to $this->ALIASPATH");
      }
    }

    # Create backup copy of the original virtusertable
    if (!rename($this->VIRTUSERPATH,$old_virtual))
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error renaming $this->VIRTUSERPATH");
        return -1;
      }
    }
    else
    {
      if ($this->DEBUG)
      {
        syslog(LOG_DEBUG,"$this->VIRTUSERPATH renamed to $old_virtual");
      }
    }

    # Create the new virtuser table
    if (!rename($new_virtual, $this->VIRTUSERPATH))
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error renaming $new_virtual");
        return -1;
      }
    }
    else
    {
      if ($this->DEBUG)
      {
        syslog(LOG_DEBUG,"$new_virtual renamed to $this->VIRTUSERPATH");
      }
    }

   # Now delete the .old files

   unlink($old_alias);
   unlink($old_virtual);

   return 0;
   # End of destructor function
  }

  function add_virtual($address,$domain,$user)
  {
    $email = $address."@".$domain;

    if($this->VIRTUAL[$email] == "")
    {
      $this->VIRTUAL[$email] = $user;
      if ($this->LOG)
      {
        syslog(LOG_INFO,"New virtual user created : $email => $user");
      }
    }
    else
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error creating virtual user : $email => $user");
        return -1;
      }
    }
  return 0;
  }
  #End of add_virtual function

  function del_virtual($address,$domain)
  {
    $email = $address."@".$domain;

    if($this->VIRTUAL[$email] != "")
    {
      unset($this->VIRTUAL[$email]);
      if ($this->LOG)
      {
        syslog(LOG_INFO,"Virtual user deleted : $email");
      }
    }
    else
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error deleting virtual user : $email");
        return -1;
      }
    }
  return 0;
  }
  #End of del_virtual function

  function add_route($source,$dest)
  {
    $source = "@".$source;
    $dest = "%1@".$dest;

    if($this->VIRTUAL[$source] == "")
    {
      $this->VIRTUAL[$source] = $dest;
      if ($this->LOG)
      {
        syslog(LOG_INFO,"New domain route created : $source => $dest");
      }
    }
    else
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error creating new domain route : $source => $dest");
        return -1;
      }
    }
  return 0;
  }
  # End of add route function

  function del_route($source,$dest)
  {
    $source = "@".$source;
    $dest = "%1@".$dest;

    if($this->VIRTUAL[$source] != "")
    {
      unset($this->VIRTUAL[$source]);
      if ($this->LOG)
      {
        syslog(LOG_INFO,"Domain route deleted : $source");
      }
    }
    else
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error deleting domain route : $source");
        return -1;
      }
    }
  return 0;
  }
  #End of del_route function


  function add_alias($source,$dest)
  {
    if($this->ALIAS[$source] == "")
    {
      $this->ALIAS[$source] = $dest;
      if ($this->LOG)
      {
        syslog(LOG_INFO,"New alias created : $source => $dest");
      }
    }
    else
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error creating new alias : $source => $dest");
        return -1;
      }
    }
  return 0;
  }
  # End of add alias function


  function del_alias($source,$dest)
  {
    if($this->ALIAS[$source] != "")
    {
      unset($this->ALIAS[$source]);
      if ($this->LOG)
      {
        syslog(LOG_INFO,"Alias deleted : $source");
      }
    }
    else
    {
      if ($this->LOG)
      {
        syslog(LOG_ERR,"Error deleting alias : $source");
        return -1;
      }
    }
  return 0;
  }
  #End of del_alias function

}
# End of class
?>