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%%	options


%%	module

/**	@file wprclean.c	Cleanup Windows print queues.
*/

#include "dk4conf.h"

#include <stdio.h>

#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define WINDOWS_H_INCLUDED
#endif
#endif

#if DK4_HAVE_STDLIB_H
#ifndef STDLIB_H_INCLUDED
#include <stdlib.h>
#define	STDLIB_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_UNISTD_H
#ifndef UNISTD_H_INCLUDED
#include <unistd.h>
#define	UNISTD_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_PROCESS_H
#ifndef PROCESS_H_INCLUDED
#include <process.h>
#define	PROCESS_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_IO_H
#ifndef IO_H_INCLUDED
#include <io.h>
#define IO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_FCNTL_H
#ifndef FCNTL_H_INCLUDED
#include <fcntl.h>
#define FCNTL_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_SYS_TYPES_H
#ifndef SYS_TYPES_H_INCLUDED
#include <sys/types.h>
#define SYS_TYPES_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_SIGNAL_H
#ifndef SIGNAL_H_INCLUDED
#include <signal.h>
#define SIGNAL_H_INCLUDED 1
#endif
#endif

#include "dk4types.h"
#include "dk4const.h"
#include "dk4error.h"
#include "dk4mem.h"
#include "dk4mema.h"
#include "dk4strd.h"
#include "dk4app.h"
#include "dk4aopt.h"
#include "dk4vers.h"
#include "dk4hnamed.h"
#include "dk4user.h"



$!trace-include



/**	Information required to delete a print job.
*/
typedef struct {
  DWORD			position;	/**< Position in queue. */
  DWORD			jobid;		/**< Job ID. */
} wprclean_printjob_t;



/**	Constant text strings used by program, not localized.
*/
static	const dkChar * const	wprclean_kwnl[] = {
$!string-table	macro=dkT
#
#	0	Program group name
#
dktools
#
#	1	Help text file name
#
wprclean.txt
#
#	2	String table file name
#
wprclean.str
$!end
};



/**	Constant texts used by the program, replaced by localized versions.
*/
static	const dkChar * const	wprclean_kw_def[] = {
$!string-table	macro=dkT
#
#	0	ERROR: Only for Windows
#
This program is only available for the Windows platform!
#
#	1	ERROR: Unnamed printer found in enumeration!
#
Unnamed printer found in enumeration!
#
#	2	ERROR: Failed to enumerate print queues!
#
Failed to enumerate print queues!
#
#	3 4	ERROR: Failed to open print queue "..."!
#
Failed to open print queue "
"!
#
#	5 6	ERROR: Failed to obtain size for print queue information!
#
Failed to obtain size for print queue information "
"!
#
#	7 8	ERROR: Failed to enumerate jobs for print queue!
#
Failed to enumerate jobs for print queue "
"!
#
#	9 10	ERROR: Failed to obtain number of jobs
#
Failed to obtain number of jobs for queue "
"!
#
#	11 12	ERROR: Failed to remove job from queue
#
Failed to remove job from queue "
"!
$!end
};



static	const dkChar * const	wprclean_help_text[] = {
$!string-table	macro=dkT

Windows print queue cleanup

wprclean [-c]

Options:
-c	--computer	Delete print jobs submitted from this computer only.

	--help		Show this short help text.
	--manual	*** SHOW FULL MANUAL ***
	--version	Show version information.
	--license	Show license information.
$!end
};




/**	License conditions.
*/
static const dkChar * const	wprclean_license_text[] = {
$!text	macro=dkT,preprocessor

This software uses code from the following projects, either directly or as
a library:

dktools		Dirk Krause's tools and libraries.
		See http://dktools.sourceforge.net/ for more information.
#if DK4_HAVE_ZLIB_H

zlib		Data compression library.
		See http://www.zlib.net/ for more information.
#endif
#if DK4_HAVE_BZLIB_H

bzip2		Data compression program and library.
		See http://www.bzip.org/ for more information.
#endif

All the licenses below apply to the program.
Licenses for used libraries are shown as found on my Scientific Linux 6.x
computer in the /usr/share/doc directory on 2015-04-01. Check the project
homepages of the used libraries for additional information and/or updated
license terms.


DK tools and libraries license
==============================
Copyright (c) 2015-2016, Dirk Krause
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.
* Neither the name of the Dirk Krause nor the names of contributors may be
  used to endorse or promote products derived from this software without
  specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.

IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#if DK4_HAVE_ZLIB_H


Zlib license
============
(C) 1995-2004 Jean-loup Gailly and Mark Adler

This software is provided 'as-is', without any express or implied
warranty.  In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.

Jean-loup Gailly        Mark Adler
jloup@gzip.org          madler@alumni.caltech.edu
#endif
#if DK4_HAVE_BZLIB_H


Bzip2 and libbzip2 library license
==================================
This program, "bzip2", the associated library "libbzip2", and all
documentation, are copyright (C) 1996-2007 Julian R Seward.  All
rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. The origin of this software must not be misrepresented; you must 
   not claim that you wrote the original software.  If you use this 
   software in a product, an acknowledgment in the product 
   documentation would be appreciated but is not required.

3. Altered source versions must be plainly marked as such, and must
   not be misrepresented as being the original software.

4. The name of the author may not be used to endorse or promote 
   products derived from this software without specific prior written 
   permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Julian Seward, jseward@bzip.org
bzip2/libbzip2 version 1.0.5 of 10 December 2007
#endif

$!end
};



/**	Full computer name (including domain).
*/
static	dkChar	host_long[256];



/**	Short computer name (just host name).
*/
static	dkChar	host_short[256];



/**	User name.
*/
static	dkChar	user_name[256];



/**	Options used by the program.
*/
static const dk4_option_specification_t wprclean_options[] = {

  /*	Delete jobs submitted from local computer only.
  */
  { dkT('c'),	dkT("computer"),		DK4_OPT_ARG_NONE },

  /*	Produce verbose output.
  */
  { dkT('v'),	dkT("verbose"),			DK4_OPT_ARG_NONE }
};



/**	Application structure.
*/
static	dk4_app_t	*app	= NULL;



/**	Queue storage.
*/
static	dk4_sto_t	*s_q	= NULL;



/**	Iterator for queue storage.
*/
static	dk4_sto_it_t	*i_q	= NULL;



/**	Message texts, replaced by localized version if available.
*/
static	const dkChar * const	*msg	=	wprclean_kw_def;


/**	Number of elements in the wprclean_options array.
*/
static	const size_t	wprclean_sz_options =
sizeof(wprclean_options)/sizeof(dk4_option_specification_t);



/**	Size of user_name buffer.
*/
static	const size_t	sz_user_name =	DK4_SIZEOF(user_name,dkChar);



/**	Number of elements in the wprclean_kw_def array.
*/
static	size_t		sz_msg =
(sizeof(wprclean_kw_def)/sizeof(DK4_PDKCHAR) - 1);



/**	Size of short host name buffer.
*/
static	const size_t	sz_host_short	= DK4_SIZEOF(host_short,dkChar);



/**	Flag: Use separated short host name.
*/
static	int	have_short_host	= 0;



/**	Flag: Delete jobs submitted from current host only.
*/
static	int	only_this_host	= 0;



/**	Exit status code returned by the program.
*/
static	int	exval		= EXIT_FAILURE;



/**	Flag: Verbose output.
*/
static	int	verbose		= 0;



/*	This program is only available for the Windows platform!
*/
#if DK4_ON_WINDOWS



/**	Check presence of -c option, retrieve host name and short
	host name if necessary.
*/
static
void
check_options(void)
{
  dkChar	*ptr;
  $? "+ check_options"
  host_long[0] = dkT('\0');
  host_short[0] = dkT('\0');
  user_name[0] = dkT('\0');
  if (0 != dk4app_opt_is_set_short(app, dkT('v'), NULL)) {
    verbose = 1;				$? ". verbose"
  }
  if (0 != dk4app_opt_is_set_short(app, dkT('c'), NULL)) {	$? ". -c"
    if (0 != dk4hostname(host_long, DK4_SIZEOF(host_long,dkChar), NULL)) {
      only_this_host = 1;			$? ". -c have host"
      if (0 != dk4str_cpy_s(host_short, sz_host_short, host_long, NULL)) {
        ptr = dk4str_chr(host_short, dkT('.'));	$? ". -c host copied"
	if (NULL != ptr) {			$? ". -c short host"
	  *ptr = dkT('\0');
	  have_short_host = 1;
	}
#if TRACE_DEBUG
	else {					$? ". host name is short"
	}
#endif
      }
#if TRACE_DEBUG
      else {					$? "! buffer too short"
      }
#endif
    }
#if TRACE_DEBUG
    else {					$? "! host name"
    }
#endif
  }
  $? "- check_options"
}



/**	Compare two queue names.
	@param	l	Left queue name.
	@param	r	Right queue name.
	@param	cr	Comparison criteria, unused.
	@return	Comparison result.
*/
static
int
compare_queues(const void *l, const void *r, int cr)
{
  int		 back	= 0;
  if (NULL != l) {
    if (NULL != r) {
      back = dk4str_cmp((const dkChar *)l, (const dkChar *)r);
      if (-1 > back) back = -1;
      if ( 1 < back) back =  1;
    } else back = 1;
  } else {
    if (NULL != r) back = -1;
  }
  return back;
}



/**	Compare two print jobs within the same queue.
	@param	l	Left job.
	@param	r	Right job.
	@param	cr	Comparison criteria (ignored).
	@return	Comparison result (inverted sort order).
*/
static
int
compare_print_jobs(const void *l, const void *r, int cr)
{
  const wprclean_printjob_t	*jl	= NULL;
  const wprclean_printjob_t	*jr	= NULL;
  int				 back	= 0;
  if (NULL != l) {
    if (NULL != r) {
      jl = (const wprclean_printjob_t *)l;
      jr = (const wprclean_printjob_t *)r;
      if (jl->position > jr->position) {
        back = -1;
      } else {
        if (jr->position > jl->position) {
	  back = 1;
	} else {
	  if (jl->jobid > jr->jobid) {
	    back = -1;
	  } else {
	    if (jr->jobid > jl->jobid) {
	      back = 1;
	    }
	  }
	}
      }
    } else back = 1;
  } else {
    if (NULL != r) back = -1;
  }
  return back;
}


/**	Allocate resources for list of print queues and iterator.
	@return	1 on success, 0 on error.
*/
static
int
setup_for_queue_list(void)
{
  int		 back	= 0;
  $? "+ setup_for_queue_list"
  s_q = dk4sto_open(NULL);
  if (NULL != s_q) {				$? ". s_q"
    dk4sto_set_comp(s_q, compare_queues, 0);
    i_q = dk4sto_it_open(s_q, NULL);
    if (NULL != i_q) {				$? ". i_q"
      back = 1;
    }
#if TRACE_DEBUG
    else {					$? "! i_q"
    }
#endif
  }
#if TRACE_DEBUG
  else {					$? "! s_q"
  }
#endif
  $? "- setup_for_queue_list %d", back
  return back;
}



/**	Clean up print queues storage and iterator.
*/
static
void
cleanup_for_queue_list(void)
{
  dkChar *p;
  $? "+ cleanup_for_queue_list"
  /*	Release all queue names saved, close iterator.
  */
  if (NULL != i_q) {				$? ". clean up list contents"
    dk4sto_it_reset(i_q);
    do {
      p = (dkChar *)dk4sto_it_next(i_q);
      if (NULL != p) {
        dk4mem_free(p);
      }
    } while (NULL != p);			$? ". clean up iterator"
    dk4sto_it_close(i_q); i_q = NULL;
  }
  /*	Close storage.
  */
  if (NULL != s_q) {				$? ". clean up container"
    dk4sto_close(s_q); s_q = NULL;
  }
  $? "- cleanup_for_queue_list"
}



/**	Retrieve list of print queue names.
	@return	1 on success, 0 on error
*/
static
int
retrieve_queue_list(void)
{
#if DK4_ON_WINDOWS
  char			*peb;		/* Result buffer */
  dkChar		*pn;		/* Printer name */
#if DK4_CHAR_SIZE > 1
  PRINTER_INFO_2W	*pi2;		/* Printer information array */
#else
  PRINTER_INFO_2A	*pi2;		/* Printer information array */
#endif
  DWORD			 cbNeeded;	/* Bytes needed */
  DWORD			 cbReturned;	/* Bytes returned */
  DWORD			 szPeb;		/* Size of peb */
  DWORD			 i;		/* Index current print queue */
  BOOL			 res;		/* Operation result */
  int		 	 back	= 0;
  $? "+ retrieve_queue_list (Windows)"
  cbNeeded = cbReturned = szPeb = (DWORD)0UL;
#if DK4_CHAR_SIZE > 1
  EnumPrintersW(PRINTER_ENUM_LOCAL,NULL,2,NULL,szPeb,&cbNeeded,&cbReturned);
#else
  EnumPrintersA(PRINTER_ENUM_LOCAL,NULL,2,NULL,szPeb,&cbNeeded,&cbReturned);
#endif
  if ((DWORD)0UL < cbNeeded) {
    szPeb = cbNeeded;
    peb = dk4mem_new_app(char, (size_t)cbNeeded, app);
    if (NULL != peb) {
      cbNeeded = cbReturned = (DWORD)0UL;
#if DK4_CHAR_SIZE > 1
      res = EnumPrintersW(
        PRINTER_ENUM_LOCAL,NULL,2,(LPBYTE)peb,szPeb,&cbNeeded,&cbReturned
      );
#else
      res = EnumPrintersA(
        PRINTER_ENUM_LOCAL,NULL,2,(LPBYTE)peb,szPeb,&cbNeeded,&cbReturned
      );
#endif
      if (res) {
        if ((DWORD)0UL < cbReturned) {
	  pi2 = (PRINTER_INFO_2 *)peb;
	  back = 1;
	  for (i = (DWORD)0UL; i < cbReturned; i++) {
	    if (NULL != pi2->pPrinterName) {
	      pn = dk4str_dup(pi2->pPrinterName, NULL);
	      if (NULL != pn) {
	        if (0 == dk4sto_add(s_q, pn, NULL)) {
		  dk4mem_free(pn);		$? "! sto add"
		  back = 0;
		  exval = EXIT_FAILURE;
		  /* ERROR: Memory */
		  dk4app_log_base1(app, DK4_LL_ERROR, 90);
		}
	      } else {				$? "! strdup"
	        back = 0;
		exval = EXIT_FAILURE;
		/* ERROR: Memory */
		dk4app_log_base1(app, DK4_LL_ERROR, 90);
	      }
	    } else {				$? "! missing printer name"
	      back = 0;
	      exval = EXIT_FAILURE;
	      /* ERROR: Invalid printer configuration */
	      dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 1);
	    }
	    pi2++;
	  }
	} else {				$? ". no printers found"
	}
      } else {					$? "! enumeration"
        exval = EXIT_FAILURE;
	/* ERROR: Printer enumeration failed */
	dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 2);
      }
      dk4mem_release(peb);
    } else {					$? "! memory"
      exval = EXIT_FAILURE;
    }
  } else {					$? ". no local printers"
  }
  $? "- retrieve_queue_list %d (Windows)", back
  return back;
#else
  return 1;
#endif
}



/**	Remove jobs from one print queue.
*/
static
void
handle_one_queue(const dkChar *pn)
{
  char			*pc1	= NULL;			/* First buffer */
  char			*pc2	= NULL;			/* Second buffer */
  dk4_sto_t		*s_j	= NULL;			/* Jobs container */
  dk4_sto_it_t		*i_j	= NULL;			/* Jobs iterator */
#if DK4_CHAR_SIZE > 1
  PRINTER_INFO_2W	*pi2	= NULL;			/* Printer info */
  JOB_INFO_1W		*ji1	= NULL;			/* Print job info */
#else
  PRINTER_INFO_2A	*pi2	= NULL;			/* Printer info */
  JOB_INFO_1A		*ji1	= NULL;			/* Print job info */
#endif
  wprclean_printjob_t	*pj	= NULL;			/* New print job */
  HANDLE		 h_pr	= INVALID_HANDLE_VALUE;	/* Printer handle */
  DWORD			 sz1	= (DWORD)0UL;		/* Size provided */
  DWORD			 sz2	= (DWORD)0UL;		/* Size needed */
  DWORD			 sz3	= (DWORD)0UL;		/* Size provided */
  DWORD			 sz4	= (DWORD)0UL;		/* Size needed */
  DWORD			 sz5	= (DWORD)0UL;		/* No print jobs */
  DWORD			 nJobs	= (DWORD)0UL;		/* Number of jobs */
  DWORD			 i	= (DWORD)0UL;		/* Current job index */
  int			 mm	= 0;			/* Machine matches */
  int			 um	= 0;			/* User matches */
  BOOL			 bres	= FALSE;		/* Printer open res */
  BOOL			 br1	= FALSE;		/* GetPrinter res */
  BOOL			 br2	= FALSE;		/* GetPrinter res */
  BOOL			 br3	= FALSE;		/* EnumJobs res */
  BOOL			 br4	= FALSE;		/* EnumJobs res */
  BOOL			 br5	= FALSE;		/* SetJob res */
  $? "+ handle_one_queue"
  /*	Prepare data structures.
  */
  s_j = dk4sto_open(NULL);
  if (NULL == s_j) {					$? "! memory"
    exval = EXIT_FAILURE;
    /* ERROR: Memory */
    dk4app_log_base1(app, DK4_LL_ERROR, 90);
    goto finished;
  }
  dk4sto_set_comp(s_j, compare_print_jobs, 0);
  i_j = dk4sto_it_open(s_j, NULL);
  if (NULL == i_j) {					$? "! memory"
    exval = EXIT_FAILURE;
    /* ERROR: Memory */
    dk4app_log_base1(app, DK4_LL_ERROR, 90);
    goto finished;
  }
  /*	Open printer
  */
#if DK4_CHAR_SIZE > 1
  bres = OpenPrinterW(pn, &h_pr, NULL);
#else
  bres = OpenPrinterA(pn, &h_pr, NULL);
#endif
  if (!(bres)) {					$? "! OpenPrinter"
    h_pr = INVALID_HANDLE_VALUE;
    exval = EXIT_FAILURE;
    /* ERROR: Failed to open printer */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 3, 4, pn);
    goto finished;
  }
  /*	Retrieve number of jobs
  */
#if DK4_CHAR_SIZE > 1
  br1 = GetPrinterW(h_pr, 2, NULL, (DWORD)0UL, &sz1);
#else
  br1 = GetPrinterA(h_pr, 2, NULL, (DWORD)0UL, &sz1);
#endif
  if ((DWORD)0UL == sz1) {		$? "! GetPrinter (1)"
    $? ". br1 = %d", ((br1) ? 1 : 0)
    $? ". sz1 = %lu", (unsigned long)sz1
    exval = EXIT_FAILURE;
    /* ERROR: Failed to request print queue */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 5, 6, pn);
    goto finished;
  }
  if ((DWORD)0UL == sz1) {				$? "! mem size"
    exval = EXIT_FAILURE;
    /* ERROR: Failed to request print queue */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 5, 6, pn);
    goto finished;
  }
  pc1 = dk4mem_new_app(char,(size_t)sz1,app);
  if (NULL == pc1) {					$? "! memory"
    exval = EXIT_FAILURE;
    goto finished;
  }
#if DK4_CHAR_SIZE > 1
  br2 = GetPrinterW(h_pr, 2, pc1, sz1, &sz2);
#else
  br2 = GetPrinterA(h_pr, 2, pc1, sz1, &sz2);
#endif
  if (!(br2)) {						$? "! GetPrinter (2)"
    exval = EXIT_FAILURE;
    /* ERROR: GetPrinter failed */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 9, 10, pn);
    goto finished;
  }
  if (sz2 > sz1) {					$? "! size mismatch"
    exval = EXIT_FAILURE;
    /* ERROR: Number of bytes increased. */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 9, 10, pn);
    goto finished;
  }
  pi2 = (PRINTER_INFO_2 *)pc1;
  nJobs = pi2->cJobs;
  if ((DWORD)0UL == nJobs) {				$? ". no jobs in queue"
    goto finished;
  }
  /*	Retrieve job data and build sorted storage
  */
#if DK4_CHAR_SIZE > 1
  br3 = EnumJobsW(
    h_pr, (DWORD)0UL, nJobs, 1, NULL, (DWORD)0UL, &sz3, &sz4
  );
#else
  br3 = EnumJobsW(
    h_pr, (DWORD)0UL, nJobs, 1, NULL, (DWORD)0UL, &sz3, &sz4
  );
#endif
  if ((!(br3)) || ((DWORD)0UL == sz3)) {		$? "! EnumJobs (1)"
    exval = EXIT_FAILURE;
    /* ERROR: Failed to find required byte number */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 7, 8, pn);
    goto finished;
  }
  pc2 = dk4mem_new_app(char,(size_t)sz3,app);
  if (NULL == pc2) {					$? "! memory"
    exval = EXIT_FAILURE;
    goto finished;
  }
  sz4 = (DWORD)0UL;
#if DK4_CHAR_SIZE > 1
  br4 = EnumJobsW(
    h_pr, (DWORD)0UL, nJobs, 1, pc2, sz3, &sz4, &sz5
  );
#else
  br4 = EnumJobsW(
    h_pr, (DWORD)0UL, nJobs, 1, pc2, sz3, &sz4, &sz5
  );
#endif
  if (!(br4)) {						$? "! EnumJobs (2)"
    exval = EXIT_FAILURE;
    /* ERROR: EnumJobs */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 7, 8, pn);
    goto finished;
  }
  if (sz4 > sz3) {					$? "! EnumJobs (3)"
    exval = EXIT_FAILURE;
    /* ERROR: Number of bytes changed */
    dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 7, 8, pn);
    goto finished;
  }
#if DK4_CHAR_SIZE > 1
  ji1 = (JOB_INFO_1W *)pc2;
#else
  ji1 = (JOB_INFO_1A *)pc2;
#endif
  for (i = (DWORD)0UL; i < sz5; i++) {
    mm = 1;
    um = 1;
    if (0 != only_this_host) {				$? ". must check host"
      if (NULL != ji1->pMachineName) {			$? ". mismatch"
        if (0 != dk4str_casecmp(host_long, ji1->pMachineName)) {
	  mm = 0;
	  if (0 != have_short_host) {			$? ". also short name"
	    if (0 == dk4str_casecmp(host_short, ji1->pMachineName)) {
	      mm = 1;					$? ". short name match"
	    }
	  }
	}
      }
    }
    if (NULL != ji1->pUserName) {
      if (0 != dk4str_casecmp(user_name, ji1->pUserName)) {
        um = 0;
      }
    }
    else {						$? ". no user name job"
      um = 0;
    }
    if ((0 != mm) && (0 != um)) {			$? ". match"
      pj = dk4mem_new_app(wprclean_printjob_t,1,app);
      if (NULL != pj) {
        pj->position = i;
	pj->jobid    = ji1->JobId;
	$? ". schedule for deletion %lu %lu", (unsigned long)i, (unsigned long)(ji1->JobId)
	if (0 == dk4sto_add(s_j, pj, NULL)) {		$? "! memory (add)"
	  dk4mem_free(pj);
	  exval = EXIT_FAILURE;
	  /* ERROR: Memory */
	  dk4app_log_base1(app, DK4_LL_ERROR, 90);
	}
      } else {						$? "! memory"
        exval = EXIT_FAILURE;
      }
    }
    ji1++;
  }
  /*	Remove print jobs from queue
  */
  dk4sto_it_reset(i_j);
  do {
    pj = (wprclean_printjob_t *)dk4sto_it_next(i_j);
    if (NULL != pj) {	$? ". delete job %lu", (unsigned long)(pj->jobid)
#if DK4_CHAR_SIZE > 1
      br5 = SetJobW(h_pr, pj->jobid, 0, NULL, JOB_CONTROL_DELETE);
#else
      br5 = SetJobA(h_pr, pj->jobid, 0, NULL, JOB_CONTROL_DELETE);
#endif
      if (!(br5)) {	$? "! failed to delete job"
        exval = EXIT_FAILURE;
	/* ERROR: Failed to remove job */
	dk4app_log_3(app, msg, sz_msg, DK4_LL_ERROR, 11, 12, pn);
      }
      else {		$? ". job deleted"
      }
    }
  } while(NULL != pj);

  /*	Final cleanup.
  */
  finished:
  if (NULL != pc2) {
    dk4mem_free(pc2);
  }
  if (NULL != pc1) {
    dk4mem_free(pc1);
  }
  if (bres) {
    ClosePrinter(h_pr);
  }
  if (NULL != i_j) {
    dk4sto_it_reset(i_j);
    do {
      pj = (wprclean_printjob_t *)dk4sto_it_next(i_j);
      if (NULL != pj) {
        dk4mem_free(pj);
      }
    } while(NULL != pj);
    dk4sto_it_close(i_j);
  }
  if (NULL != s_j) {
    dk4sto_close(s_j);
  }
  $? "- handle_one_queue"
}



/**	Remove all print jobs from local queues.
*/
static
void
remove_all_print_jobs(void)
{
  dkChar	*pn;

  check_options();
  if (0 != dk4user_get_logname(user_name, sz_user_name, 1, NULL)) {
    if (setup_for_queue_list()) {
      exval = EXIT_SUCCESS;
      if (retrieve_queue_list()) {
        dk4sto_it_reset(i_q);
        do {
          pn = (dkChar *)dk4sto_it_next(i_q);
	  if (NULL != pn) {
	    handle_one_queue(pn);
	  }
        } while (NULL != pn);
      }
    }
    cleanup_for_queue_list();
  } else {
  }
}

#endif



/**	Main function.
	@param	argc	Number of command line arguments.
	@param	argv	Command line arguments array.
	@return	0 on success, all other values indicate errors.
*/
#if DK4_CHAR_SIZE > 1
int wmain(int argc, wchar_t *argv[])
#else
int main(int argc, char *argv[])
#endif
{
  $!trace-init wprclean.deb
  $? "+ main"
  app = dk4app_open_cmd(
    argc, argv, wprclean_options, wprclean_sz_options,
    wprclean_kwnl[0], DKT_VERSION_DK,
    wprclean_kwnl[1], wprclean_help_text, wprclean_license_text
  );
  if (NULL != app) {
    sz_msg = dk4app_string_table_size(wprclean_kw_def);
    msg	   = dk4app_string_table(app, wprclean_kwnl[2], wprclean_kw_def);
    if (0 != dk4app_can_run_normally(app)) {
#if DK4_ON_WINDOWS
      remove_all_print_jobs();
#else
      dk4app_log_1(app, msg, sz_msg, DK4_LL_ERROR, 0);
#endif
    } else {
      if (0 != dk4app_help_version_license(app)) {
        exval = EXIT_SUCCESS;
      }
    }
    dk4app_close(app);
  }
  $? "- main %d", exval
  $!trace-end
  exit(exval); return exval;
}