/root/usr/share/nethesis/NethServer/Tool/phpprintipp/ExtendedPrintIPP.php

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
/* @(#) $Header: /sources/phpprintipp/phpprintipp/php_classes/ExtendedPrintIPP.php,v 1.1 2008/06/21 00:30:57 harding Exp $
 *
 * Class PrintIPP - Send extended IPP requests.
 *
 *   Copyright (C) 2005-2006  Thomas HARDING
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Library General Public
 *   License as published by the Free Software Foundation; either
 *   version 2 of the License, or (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *   mailto:thomas.harding@laposte.net
 *   Thomas Harding, 56 rue de la bourie rouge, 45 000 ORLEANS -- FRANCE
 *   
 */
    
/*

    This class is intended to implement non required operations of 
    Internet Printing Protocol on client side.

    References needed to debug / add functionnalities:
        - RFC 2910
        - RFC 2911
        - RFC 3380
        - RFC 3995
        - RFC 3996
        - RFC 3997
        - RFC 3998
        - ...
*/

require_once("PrintIPP.php");

class ExtendedPrintIPP extends PrintIPP {


    // {{{ constructor
    public function __construct() {
        parent::__construct();
    }
    // }}}


/******************
*
* PUBLIC FUNCTIONS
*
*******************/


// OPERATIONS

    // {{{ printURI ($uri)
    public function printURI ($uri) {

        self::_putDebug( sprintf("*************************\nDate: %s\n*************************\n\n",date('Y-m-d H:i:s')));

        if (!empty($uri)) {
            $this->document_uri = $uri;
            $this->setup->uri = 1;
        }
        
        if(!$this->_stringUri())
            return FALSE;
                       
        $this->output = $this->stringjob;
           
        $post_values = array( "Content-Type" => "application/ipp",
                              "Data" => $this->output);
            
            
        if (self::_sendHttp ($post_values,$this->paths['printers'])) {
            
            if(self::_parseServerOutput()) {
                $this->_parseJobAttributes();
                $this->_getJobId();
                //$this->_getPrinterUri();
                $this->_getJobUri();
                }
            }
        
        $this->attributes = &$this->job_attributes;
        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf("printing uri %s, job %s: ",$uri,$this->last_job)
                            .$this->serveroutput->status,3);
            else {    
                $this->jobs = array_merge($this->jobs,array(""));
                $this->jobs_uri = array_merge($this->jobs_uri,array(""));
                self::_errorLog(sprintf("printing uri %s: ",$uri,$this->last_job)
                            .$this->serveroutput->status,1);
                }
            return $this->serveroutput->status; 
            }
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog("printing uri $uri : OPERATION FAILED",1);
            
    return false;
    }
    // }}}

    // {{{ purgeJobs()
    public function purgeJobs() {
        
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(""));

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
        
        if (!isset($this->setup->uri)) {
            $this->getPrinters();
            unset($this->jobs[count($this->jobs) - 1]);
            unset($this->jobs_uri[count($this->jobs_uri) - 1]);
            unset($this->status[count($this->status) - 1]);
            
            if (array_key_exists(0,$this->available_printers))
               self::setPrinterURI($this->available_printers[0]);
            else {
                trigger_error(_("purgeJobs: Printer URI is not set: die"),E_USER_WARNING);
                self::_putDebug( _("purgeJobs: Printer URI is not set: die\n"));
                self::_errorLog("purgeJobs: Printer URI is not set, die",2);
                return FALSE;
                }
            }
            
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
       
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x12) // purge-Jobs | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->printer_uri
                         . $this->meta->username
                         . chr(0x22)
                         . self::_giveMeStringLength("purge-jobs")
                         . "purge-jobs"
                         . self::_giveMeStringLength(chr(0x01))
                         . chr(0x01)
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("purging jobs of %s\n"),$this->printer_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['admin'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }

        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("purging jobs of %s: "),$this->printer_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("purging jobs of %s: "),$this->printer_uri)
                                             .$this->serveroutput->status,1);
                                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("purging jobs of %s : OPERATION FAILED"),
                                     $this->printer_uri),3);
            
    return false;
    }

    // }}}

    // {{{ createJob()
    public function createJob() {
        

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
        
        if (!isset($this->setup->uri)) {
            $this->getPrinters();
            unset($this->jobs[count($this->jobs) - 1]);
            unset($this->jobs_uri[count($this->jobs_uri) - 1]);
            unset($this->status[count($this->status) - 1]);
            
            if (array_key_exists(0,$this->available_printers))
               self::setPrinterURI($this->available_printers[0]);
            else {
                trigger_error(_("createJob: Printer URI is not set: die"),E_USER_WARNING);
                self::_putDebug( _("createJob: Printer URI is not set: die\n"));
                self::_errorLog("createJob: Printer URI is not set, die",2);
                return FALSE;
                }
            }
            
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
        
        if (!isset($this->setup->copies))
            self::setCopies(1);

        if (!isset($this->meta->fidelity))
            $this->meta->fidelity = '';
 
        if (!isset($this->meta->sides))
            $this->meta->sides = '';
        
        if (!isset($this->meta->page_ranges))
            $this->meta->page_ranges = '';
                    
        if (!isset($this->setup->jobname))
            if (is_readable($this->data))
                self::setJobName(basename($this->data),true);
            else
                self::setJobName();
        unset($this->setup->jobname);

        if (!isset($this->timeout))
            $this->timeout = 60;
        
        $timeout = self::_integerBuild($this->timeout);
        

        $this->meta->timeout = chr(0x21) // integer
                             . self::_giveMeStringLength("multiple-operation-time-out")
                             . "multiple-operation-time-out"
                             . self::_giveMeStringLength($timeout)
                             . $timeout;
                             
        $jobattributes = '';
        $operationattributes = '';
        $printerattributes = '';
        self::_buildValues($operationattributes,$jobattributes,$printerattributes);
        
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x05) // Create-Job | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->printer_uri
                         . $this->meta->username
                         . $this->meta->jobname
                         . $this->meta->fidelity
                         . $this->meta->timeout
                         . $operationattributes
                         . chr(0x02) // start job-attributes | job-attributes-tag
                         . $this->meta->copies
                         . $this->meta->sides
                         . $this->meta->page_ranges
                         . $jobattributes
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        unset ($this->meta->copies,$this->meta->sides,$this->meta->page_ranges);

        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("creating job %s, printer %s\n"),$this->last_job,$this->printer_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['printers']))
            if(self::_parseServerOutput()) {
                $this->_getJobId();
                $this->_getJobUri();
                $this->_parseJobAttributes();
            } else {
                $this->jobs = array_merge($this->jobs,array(''));
                $this->jobs_uri = array_merge($this->jobs_uri,array(''));
                }


        

        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("Create job: job %s"),$this->last_job)
                            .$this->serveroutput->status,3);
            else {

                $this->jobs = array_merge($this->jobs,array(""));
                $this->jobs_uri = array_merge($this->jobs_uri,array(""));
                self::_errorLog(sprintf(_("Create-Job: %s"),$this->serveroutput->status),1);
                }                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("Creating job on %s : OPERATION FAILED"),
                                     $this->printer_uri),3);
            
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(""));
    return false;
    }

    // }}}
    
    // {{{ sendDocument($job)
    public function sendDocument($job,$is_last=false){
        
        self::_putDebug( sprintf("*************************\nDate: %s\n*************************\n\n",date('Y-m-d H:i:s')));

        if (!$this->_stringDocument($job,$is_last))
            return FALSE;
                       
        if (is_readable($this->data)){
            self::_putDebug( _("sending Document\n")); 
                
            $this->output = $this->stringjob;
           
            if ($this->setup->datatype == "TEXT")
                $this->output .= chr(0x16); // ASCII "SYN"
            
             
            $post_values = array( "Content-Type" => "application/ipp",
                                  "Data" => $this->output,
                                  "File" => $this->data);
            
            if ($this->setup->datatype == "TEXT" && !isset($this->setup->noFormFeed))
                $post_values = array_merge($post_values,array("Filetype"=>"TEXT"));
            
        } else {                      
            self::_putDebug( _("sending DATA as document\n")); 
            
            $this->output = $this->stringjob;
            $this->output .= $this->datahead;    
            $this->output .= $this->data;
            $this->output .= $this->datatail;
            
            $post_values = array( "Content-Type" => "application/ipp",
                                  "Data" => $this->output);
             
            
            }
            
        if (self::_sendHttp ($post_values,$this->paths['printers'])) {
        
            if(self::_parseServerOutput()) {
                $this->_getJobId();
                //$this->_getPrinterUri();
                $this->_getJobUri();
                $this->_parseJobAttributes();
            } else {
                $this->jobs = array_merge($this->jobs,array($job));
                $this->jobs_uri = array_merge($this->jobs_uri,array($job));
                }

            }
        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));

            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf("sending document, job %s: %s",$job,$this->serveroutput->status),3);
            else {
                $this->jobs = array_merge($this->jobs,array(""));
                $this->jobs_uri = array_merge($this->jobs_uri,array(""));
                self::_errorLog(sprintf("sending document, job %s: %s",$job,$this->serveroutput->status),1);
                }
            return $this->serveroutput->status; 
            
            }

        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        $this->jobs = array_merge($this->jobs,array($job));
        $this->jobs_uri = array_merge($this->jobs_uri,array($job));
        self::_errorLog(sprintf("sending document, job %s : OPERATION FAILED",$job),1);
    
    return false;
    }
    // }}}

    // {{{ sendURI ($uri,$job,$is_last=false) 
    public function sendURI ($uri,$job,$is_last=false){     

        self::_putDebug( sprintf("*************************\nDate: %s\n*************************\n\n",date('Y-m-d H:i:s')));

        if (!$this->_stringSendUri($uri,$job,$is_last))
            return FALSE;
                       
            self::_putDebug( _("sending URI $uri\n")); 
                
            $this->output = $this->stringjob;
             
            $post_values = array( "Content-Type" => "application/ipp",
                                  "Data" => $this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['printers'])) {
        
            if(self::_parseServerOutput()) {
                $this->_getJobId();
                //$this->_getPrinterUri();
                $this->_getJobUri();
                $this->_parseJobAttributes();
            } else {
                $this->jobs = array_merge($this->jobs,array($job));
                $this->jobs_uri = array_merge($this->jobs_uri,array($job));
                }

            }
        
        $this->attributes = &$this->job_attributes;

        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));

            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf("sending uri %s, job %s: %s",$uri,$job,$this->serveroutput->status),3);
            else {
                $this->jobs = array_merge($this->jobs,array(""));
                $this->jobs_uri = array_merge($this->jobs_uri,array(""));
                self::_errorLog(sprintf("sending uri, job %s: %s",$uri,$job,$this->serveroutput->status),1);
                }
            return $this->serveroutput->status; 
            
            }

        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        $this->jobs = array_merge($this->jobs,array($job));
        $this->jobs_uri = array_merge($this->jobs_uri,array($job));
        self::_errorLog(sprintf("sending uri %s, job %s : OPERATION FAILED",$uri,$job),1);
    
    return false;
    }
    // }}}

    // {{{ pausePrinter ()
     public function pausePrinter() {
        
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(""));

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
        
        if (!isset($this->setup->uri)) {
            $this->getPrinters();
            unset($this->jobs[count($this->jobs) - 1]);
            unset($this->jobs_uri[count($this->jobs_uri) - 1]);
            unset($this->status[count($this->status) - 1]);
            
            if (array_key_exists(0,$this->available_printers))
               self::setPrinterURI($this->available_printers[0]);
            else {
                trigger_error(_("pausePrinter: Printer URI is not set: die"),E_USER_WARNING);
                self::_putDebug( _("pausePrinter: Printer URI is not set: die\n"));
                self::_errorLog("pausePrinter: Printer URI is not set, die",2);
                return FALSE;
                }
            }
            
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
       
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x10) // Pause-Printer | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->printer_uri
                         . $this->meta->username
                         /* . chr(0x22)
                         . self::_giveMeStringLength("purge-jobs")
                         . "purge-jobs"
                         . self::_giveMeStringLength(chr(0x01))
                         . chr(0x01) */
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("pause printer %s\n"),$this->printer_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['admin'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }

        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("Pause printer %s: "),$this->printer_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("pause printer %s: "),$this->printer_uri)
                                             .$this->serveroutput->status,1);
                                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("pause printer %s : OPERATION FAILED"),
                                     $this->printer_uri),3);
            
    return false;
    }
    // }}}

    // {{{ resumePrinter ()
     public function resumePrinter() {
        
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(""));

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
        
        if (!isset($this->setup->uri)) {
            $this->getPrinters();
            unset($this->jobs[count($this->jobs) - 1]);
            unset($this->jobs_uri[count($this->jobs_uri) - 1]);
            unset($this->status[count($this->status) - 1]);
            
            if (array_key_exists(0,$this->available_printers))
               self::setPrinterURI($this->available_printers[0]);
            else {
                trigger_error(_("resumePrinter: Printer URI is not set: die"),E_USER_WARNING);
                self::_putDebug( _("resumePrinter: Printer URI is not set: die\n"));
                self::_errorLog(" Printer URI is not set, die",2);
                return FALSE;
                }
            }
            
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
       
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x11) // suse-Printer | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->printer_uri
                         . $this->meta->username
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("resume printer %s\n"),$this->printer_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['admin'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }

        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("resume printer %s: "),$this->printer_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("resume printer %s: "),$this->printer_uri)
                                             .$this->serveroutput->status,1);
                                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("resume printer %s : OPERATION FAILED"),
                                     $this->printer_uri),3);
            
    return false;
    }
    // }}}

    // {{{ holdJob ($job_uri)
    public function holdJob ($job_uri,$until='indefinite') {
    
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(trim($job_uri)));

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
           
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
        
        if (!isset($this->meta->message))
            $this->meta->message = '';

        self::_setJobUri($job_uri);
        
        $until_strings = array('no-hold','day-time','evening','night','weekend','second-shift','third-shift');
        if (in_array($until,$until_strings))
            true;
        else 
            $until = 'indefinite';

        $this->meta->job_hold_until = chr(0x42) // keyword
                                    . self::_giveMeStringLength('job-hold-until')
                                    . 'job-hold-until'
                                    . self::_giveMeStringLength($until)
                                    . $until;
        
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x0C) // Hold-Job | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->username
                         . $this->meta->job_uri
                         . $this->meta->message
                         . $this->meta->job_hold_until
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("hold job %s until %s\n"),$job_uri,$until)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['jobs'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("hold job %s until %s: "),$job_uri,$until)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("hold job %s until %s: "),$job_uri,$until)
                                             .$this->serveroutput->status,1);
                                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("hold job %s until %s : OPERATION FAILED"),
                                     $job_uri,$until),3);
            
    return false;
    }
    // }}}
    
    // {{{ releaseJob ($job_uri)
    public function releaseJob ($job_uri) {
    
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(trim($job_uri)));

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
           
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
        
        if (!isset($this->meta->message))
            $this->meta->message = '';

        self::_setJobUri($job_uri);
        
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x0D) // Hold-Job | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->job_uri
                         . $this->meta->username
                         . $this->meta->message
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("release job %s\n"),$job_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['jobs'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("release job %s: "),$job_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("release job %s: "),$job_uri)
                                             .$this->serveroutput->status,1);
                                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("release job %s: OPERATION FAILED"),
                                     $job_uri),3);
            
    return false;
    }
    // }}}
    
    // {{{ restartJob ($job_uri)
    public function restartJob ($job_uri) {
    
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(trim($job_uri)));

        self::_setOperationId();
        $this->parsed = array();
        unset($this->printer_attributes);
           
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
        
        if (!isset($this->meta->message))
            $this->meta->message = '';

        self::_setJobUri($job_uri);
        
       
        $jobattributes = '';
        $operationattributes = '';
        $printerattributes = '';
        self::_buildValues ($operationattributes,$jobattributes,$printerattributes); 
 
        
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x0E) // Hold-Job | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->job_uri
                         . $this->meta->username
                         . $this->meta->message
                         . $jobattributes // job-hold-until is set by setAttribute($attribute,$value)
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("release job %s\n"),$job_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['jobs'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }
        
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("release job %s: "),$job_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("release job %s: "),$job_uri)
                                             .$this->serveroutput->status,1);
                                             
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("release job %s: OPERATION FAILED"),
                                     $job_uri),3);
            
    return false;
    }
    // }}}
    
    // {{{ setJobAttributes ($job_uri,$deleted_attributes=array())
    public function setJobAttributes ($job_uri,$deleted_attributes=array()) {
    
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(trim($job_uri)));

        self::_setOperationId();
        $this->parsed = array();
        unset ($this->attributes);
           
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
        
        if (!isset($this->meta->message))
            $this->meta->message = '';

            
        if (!isset($this->meta->copies))
            $this->meta->copies = '';

        if (!isset($this->meta->sides))
            $this->meta->sides = '';
        
        if (!isset($this->meta->page_ranges))
            $this->meta->page_ranges = '';
  
        self::_setJobUri($job_uri);
        
        $operationattributes = '';
        $jobattributes = '';
        $printerattributes = '';
        self::_buildValues ($operationattributes,$jobattributes,$printerattributes); 
        
        $this->meta->deleted_attributes = "";
        for ($i = 0 ; $i < count($deleted_attributes) ; $i++)
                $this->meta->deleted_attributes .= chr(0x16) // out-of-band value
                                                . self::_giveMeStringLength($deleted_attributes[$i])
                                                . $deleted_attributes[$i]
                                                . chr(0x0).chr(0x0); // value-length = 0;
                
        
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x14) // Set-Job-Attributes | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->job_uri
                         . $this->meta->username
                         . $this->meta->message
                         . chr(0x02) // start job-attributes
                         . $jobattributes // setteds by setAttribute($attribute,$value)
                         . $this->meta->copies
                         . $this->meta->sides
                         . $this->meta->page_ranges
                         . $this->meta->deleted_attributes
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("set job attributes for job %s\n"),$job_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['jobs'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("set job attributes for job %s: "),$job_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("set job attributes for job %s: "),$job_uri)
                                             .$this->serveroutput->status,1);
            $this->last_job = $job_uri;
            $this->jobs_uri[count($this->jobs_uri) - 1] = $job_uri;
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("set job attributes for job %s: OPERATION FAILED"),
                                     $job_uri),3);
            
    return false;
    }
    // }}}
    
    // {{{ setPrinterAttributes ()
    public function setPrinterAttributes ($document_format='',$deleted_attributes=array()) {
        /* $document_format (RFC 3380)
         If the client includes this attribute, the Printer MUST change
         the supplied attributes for the document format specified by
         this attribute.  If a supplied attribute is a member of the
         "document-format-varying-attributes" (i.e., the attribute
         varies by document format, see section 6.3), the Printer MUST
         change the supplied attribute for the document format specified
         by this attribute, but not for other document formats.  If a
         supplied attribute isn't a member of the "document-format-
         varying-attributes" (i.e., it doesn't vary by document format),
         the Printer MUST change the supplied attribute for all document
         formats.

         If the client omits this attribute, the Printer MUST change the
         supplied attributes for all document formats, whether or not
         they vary by document-format.
         */
 
        $this->jobs = array_merge($this->jobs,array(""));
        $this->jobs_uri = array_merge($this->jobs_uri,array(""));
        unset ($this->attributes);
        
        self::_setOperationId();
        $this->parsed = array();
           
        if (!isset($this->setup->charset))
            self::setCharset('us-ascii');
            
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->meta->username))
            self::setUserName();
        
        if (!isset($this->meta->message))
            $this->meta->message = '';
            
        if (!isset($this->meta->copies))
            $this->meta->copies = '';

        if (!isset($this->meta->sides))
            $this->meta->sides = '';
        
        if (!isset($this->meta->page_ranges))
            $this->meta->page_ranges = '';
  
        if ($document_format)
        $document_format = chr(0x49) // document-format tag
                                . self::_giveMeStringLength('document-format')
                                . 'document-format' // 
                                . self::_giveMeStringLength($document_format)
                                . $document_format; // value

        $operationattributes = '';
        $jobattributes = '';
        $printerattributes = '';
        self::_buildValues ($operationattributes,$jobattributes,$printerattributes); 
        
        $this->meta->deleted_attributes = "";
        for ($i = 0 ; $i < count($deleted_attributes) ; $i++)
                $this->meta->deleted_attributes .= chr(0x16) // out-of-band "deleted" value
                                                . self::_giveMeStringLength($deleted_attributes[$i])
                                                . $deleted_attributes[$i]
                                                . chr(0x0).chr(0x0); // value-length = 0;
                
        
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         . chr(0x00) . chr (0x13) // Set-Printer-Attributes | operation-id
                         . $this->meta->operation_id //           request-id
                         . chr(0x01) // start operation-attributes | operation-attributes-tag
                         . $this->meta->charset
                         . $this->meta->language
                         . $this->meta->printer_uri
                         . $this->meta->username
                         . $this->meta->message
                         . $operationattributes
                         . chr(0x02) // start job-attributes
                         . $jobattributes // setteds by setAttribute($attribute,$value)
                         . $this->meta->copies
                         . $this->meta->sides
                         . $this->meta->page_ranges
                         . $this->meta->deleted_attributes
                         . chr(0x03); // end-of-attributes | end-of-attributes-tag
                         
        self::_putDebug(sprintf(_("String sent to the server is:\n%s\n"), $this->stringjob));
        
        self::_putDebug(sprintf(_("set printer attributes for job %s\n"),$this->printer_uri)); 
            
        $this->output = $this->stringjob;
          
        $post_values = array( "Content-Type"=>"application/ipp",
                              "Data"=>$this->output);
            
        if (self::_sendHttp ($post_values,$this->paths['printers'])) {
            self::_parseServerOutput();
            self::_parseAttributes();
            }
        if (isset($this->serveroutput) && isset($this->serveroutput->status)) {
            
            $this->status = array_merge($this->status,array($this->serveroutput->status));
            
            if ($this->serveroutput->status == "successfull-ok")
                self::_errorLog(sprintf(_("set printer attributes for printer %s: "),$this->printer_uri)
                            .$this->serveroutput->status,3);
            else
                 self::_errorLog(sprintf(_("set printer attributes for printer %s: "),$this->printer_uri)
                                             .$this->serveroutput->status,1);
            
            return $this->serveroutput->status; 
            }    
            
        $this->status = array_merge($this->status,array("OPERATION FAILED"));
        self::_errorLog(date("Y-m-d H:i:s : ")
                        .basename($_SERVER['PHP_SELF'])
                        .sprintf(_("set printer attributes for printer %s: OPERATION FAILED"),
                                     $this->printer_uri),1);
            
    return false;
 
    }
    // }}}

// REQUEST BUILDING

    // {{{ _setDocumentUri ($job_uri) 
    protected function _setDocumentUri () {
       
        $this->meta->document_uri = chr(0x45) // type uri
                                . chr(0x00).chr(0x0c) // name-length
                                . "document-uri"
                                . self::_giveMeStringLength($this->document_uri)
                                . $this->document_uri;
        
        self::_putDebug( "document uri is: ".$this->document_uri."\n");
        $this->setup->document_uri = 1;

    }
    // }}}

    // {{{ _stringUri ()
    protected function _stringUri () {
    
        self::_setDocumentUri();
        
        if (!isset($this->setup->document_uri)) {
            trigger_error(_("_stringUri: Document URI is not set: die"),E_USER_WARNING);
            self::_putDebug( _("_stringUri: Document URI is not set: die\n"));
            self::_errorLog("Document URI is not set, die",2);
            return FALSE;
        }
        unset ($this->setup->document_uri);
               
        if (!isset($this->setup->uri)) {
            $this->getPrinters();
            unset($this->jobs[count($this->jobs) - 1]);
            unset($this->jobs_uri[count($this->jobs) - 1]);
            unset($this->status[count($this->status) - 1]);
            
            if (array_key_exists(0,$this->available_printers))
               self::setPrinterURI($this->available_printers[0]);
            else {
                trigger_error(_("_stringUri: Printer URI is not set: die"),E_USER_WARNING);
                self::_putDebug( _("_stringUri: Printer URI is not set: die\n"));
                self::_errorLog("_stringUri: Printer URI is not set, die",2);
                return FALSE;
                }
            }
  
        if (!isset($this->setup->charset))
            $this->meta->charset = "";
        //    self::setCharset('us-ascii');
        if (!isset($this->setup->datatype))
            self::setBinary();
        if (!isset($this->setup->uri)) {
            trigger_error(_("_stringUri: Printer URI is not set: die"),E_USER_WARNING);
            self::_putDebug( _("_stringUri: Printer URI is not set: die\n"));
            self::_errorLog("Printer URI is not set, die",2);
            return FALSE;
            }
        if (!isset($this->setup->copies))
            self::setCopies(1);
        
        if (!isset($this->setup->language))
            self::setLanguage('en_us');

        if (!isset($this->setup->mime_media_type))
            self::setMimeMediaType();
        unset ($this->setup->mime_media_type);
            
        if (!isset($this->setup->jobname))
            if (is_readable($this->data))
                self::setJobName(basename($this->data),true);
            else
                self::setJobName();
        unset($this->setup->jobname);

        if (!isset($this->meta->username))
            self::setUserName();

        if (!isset($this->meta->fidelity))
            $this->meta->fidelity = '';
        
        if (!isset($this->meta->document_name))
            $this->meta->document_name = '';

        if (!isset($this->meta->sides))
            $this->meta->sides = '';
        
        if (!isset($this->meta->page_ranges))
            $this->meta->page_ranges = '';
         
        $jobattributes = '';
        $operationattributes = '';
        $printerattributes = '';
        self::_buildValues($operationattributes,$jobattributes,$printerattributes);
         
        self::_setOperationId();
       
        if (!isset($this->error_generation->request_body_malformed))
            $this->error_generation->request_body_malformed = "";
       
        $this->stringjob = chr(0x01) . chr(0x01) // 1.1  | version-number
                         .…