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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2012-xxxx
license		=	bsd



%%	module

/**	No warnings from WinSock about deprecated functions.
*/
#define	_WINSOCK_DEPRECATED_NO_WARNINGS	1

#include "dk3all.h"
#include "dkt.h"
#include "dkwt.h"



$!trace-include


/**	Buffer size to enumerate printers.
*/
#define	DKWT_PRINTER_ENUM_BUFFER_SIZE	1024

/**	Buffer size to enumerate print jobs.
*/
#define DKWT_PRINTER_ENUM_JOBS_SIZE	8192

/**	Number of print jobs to show in one request.
*/
#define	DKWT_PRINTER_NUMBER_OF_JOBS	64


/**	Local print queue.
*/
typedef struct {
  dkChar 		*qn;	/**< Queue name. */
} DKWT_CP_QUEUE;



/**	Print job.
*/
typedef struct {
  DWORD		 jobId;		/**< Job ID. */
  DWORD		 pos;		/**< Position in queue. */
  dkChar const	*docName;	/**< Print job name. */
} DKWT_CP_JOB;



/**	Compare two print queues by name.
	@param	l	Left object.
	@param	r	Right object.
	@param	cr	Comparison criteria (0=queue/queue, 1=queue/name)
	@return	Comparison result.
*/
static
int
dkwt_cp_queue_comp(void const *l, void const *r, int cr)
{
  DKWT_CP_QUEUE	const *ql;
  DKWT_CP_QUEUE const *qr;
  int		 back = 0;
  if(l) {
    if(r) {
      ql = (DKWT_CP_QUEUE const *)l;
      switch(cr) {
        case 1: {
	  if(ql->qn) {
	    back = dk3str_casecmp(ql->qn, (dkChar const *)r);
	    if(back < -1) back = -1;
	    if(back >  1) back =  1;
	  } else back = -1;
	} break;
	default: {
	  qr = (DKWT_CP_QUEUE const *)r;
	  if(ql->qn) {
	    if(qr->qn) {
	      back = dk3str_casecmp(ql->qn, qr->qn);
	      if(back < -1) back = -1;
	      if(back >  1) back =  1;
	    } else back = 1;
	  } else {
	    if(qr->qn) back = -1;
	  }
	} break;
      }
    } else back = 1;
  } else {
    if(r) back = -1;
  }
  return back;
}



/**	Destroy queue structure, release memory.
	@param	q	Queue structure to destroy.
*/
static
void
dkwt_cp_queue_del(DKWT_CP_QUEUE *q)
{
  if(q) {
    dk3_release(q->qn);
    dk3_delete(q);
  }
}



/**	Create queue structure, allocate memory.
	@param	app	Application structure for diagnostics, may be NULL.
	@param	n	Queue name.
	@return	Pointer to new structure on success, NULL on error.
*/
static
DKWT_CP_QUEUE *
dkwt_cp_queue_new(dk3_app_t *app, dkChar const *n)
{
  DKWT_CP_QUEUE	*back = NULL;
  if(n) {
    back = dk3_new_app(DKWT_CP_QUEUE,1,app);
    if(back) {
      back->qn = NULL;
      back->qn = dk3str_dup_app(n, app);
      if(!(back->qn)) {
        dkwt_cp_queue_del(back);
	back = NULL;
      }
    }
  }
  return back;
}



/**	Destroy job structure, release memory.
	@param	j	Job structure to delete.
*/
static
void
dkwt_cp_job_del(DKWT_CP_JOB *j)
{
   if(j) {
     dk3_release(j->docName);
     j->jobId = 0;
     j->pos = 0;
     dk3_delete(j);
   }
}



/**	Create new job structure, allocate memory.
	@param	app	Application structure for diagnostics.
	@param	jobid	Job ID.
	@param	pos	Job position in the queue.
	@param	dn	Document name.
	@return	Pointer to new structure on success, NULL on error.
*/
static
DKWT_CP_JOB *
dkwt_cp_job_new(dk3_app_t *app, DWORD jobid, DWORD pos, dkChar const *dn)
{
  DKWT_CP_JOB	*back = NULL;
  back = dk3_new_app(DKWT_CP_JOB,1,app);
  if(back) {
    back->docName = NULL;
    back->jobId = jobid;
    back->pos   = pos;
    if(dn) {
      back->docName = dk3str_dup_app(dn, app);
      if(!(back->docName)) {
        dkwt_cp_job_del(back);
	back = NULL;
      }
    }
  }
  return back;
}



/**	Compare 2 jobs to find which one to delete first.
	@param	l	Left job.
	@param	r	Right job.
	@param	cr	Comparison criteria (ignored).
	@return	Comparison result, jobs with higher position are deleted first.
*/
static
int
dkwt_cp_job_comp(void const *l, void const *r, int cr)
{
  DKWT_CP_JOB const	*jl;
  DKWT_CP_JOB const	*jr;
  int		 back = 0;
  if(l) {
    if(r) {
      jl = (DKWT_CP_JOB const *)l;
      jr = (DKWT_CP_JOB const *)r;
      if(jl->pos < jr->pos) {
        back = 1;
      } else {
        if(jl->pos > jr->pos) {
	  back = -1;
	}
      }
    } else back = 1;
  } else {
    if(r) back = -1;
  }
  return back;
}




/**	Remove all print jobs for one user from a single queue.
	@param	app		Application structure for  diagnostics.
	@param	msg		Localized message texts.
	@param	kwnl		Keywords, not localized.
	@param	userName	User name.
	@param	hostName	Host name.
	@param	queue		Queue to modify.
*/
static
void
dkwt_cp_remove_all_jobs(
  dk3_app_t		*app,
  dkChar const * const	*msg,
  dkChar const * const	*kwnl,
  dkChar const		*userName,
  dkChar const		*hostName,
  DKWT_CP_QUEUE		*queue
)
{
  char			jeb[DKWT_PRINTER_ENUM_JOBS_SIZE]; /* Enum buffer. */
  dkChar		idbuf[64];
  dk3_sto_t		*s_j;		/* Jobs storage. */
  dk3_sto_it_t		*i_j;		/* Iterator for jobs storage. */
  JOB_INFO_1		*ji1;		/* Job information pointer. */
  DKWT_CP_JOB		*job;		/* Current job. */
  HANDLE		hPrinter;	/* Handle for printer. */
  DWORD			szjeb;		/* Size of jeb buffer. */
  DWORD			bneed;		/* Bytes needed. */
  DWORD			nj;		/* Number of jobs found. */
  DWORD			i;		/* Index of current job to process. */
  int			rmj;		/* Flag: Remove this job. */
  BOOL			res;		/* Operation result. */
  $? "+ dkwt_cp_remove_all_jobs"
  s_j = NULL; i_j = NULL;
  s_j = dk3sto_open_app(app);
  if(s_j) {
    dk3sto_set_comp(s_j, dkwt_cp_job_comp, 0);
    i_j = dk3sto_it_open(s_j);
  }
  if((s_j) && (i_j)) {
    /* PROGRESS: Cleaning up local queue... */
    dk3app_log_3(app, DK3_LL_PROGRESS, msg, 83, 84, queue->qn);
#if DK3_CHAR_SIZE > 1
    res = OpenPrinterW(queue->qn, &hPrinter, NULL);
#else
    res = OpenPrinterA(queue->qn, &hPrinter, NULL);
#endif
    if(res) {
      /*	Enumerate print jobs, save jobs to delete.
      */
      szjeb = sizeof(jeb); bneed = 0; nj = 0;
#if DK3_CHAR_SIZE > 1
      res = EnumJobsW(
        hPrinter, 0, DKWT_PRINTER_NUMBER_OF_JOBS, 1, (LPBYTE)jeb, szjeb,
        &bneed, &nj
      );
#else
      res = EnumJobsA(
        hPrinter, 0, DKWT_PRINTER_NUMBER_OF_JOBS, 1, (LPBYTE)jeb, szjeb,
        &bneed, &nj
      );
#endif
      if(res) {					$? ". EnumJobs"
        if(nj > 0) {				$? ". nj=%d", (int)nj
	  ji1 = (JOB_INFO_1 *)jeb;
	  for(i = 0; i < nj; i++) {
	    rmj = 0;
	    if(ji1[i].pUserName) {	$? ". job user \"%!ds\" / user \"%!ds\"", ji1[i].pUserName, userName
	      if(0 == dk3str_casecmp(ji1[i].pUserName, userName)) {	$? ". equal"
	        rmj = 1;
		if(hostName) {		$? ". have host name \"%!ds\"", hostName
		  rmj = 0;
		  if(ji1[i].pMachineName) {	$? ". job host \"%!ds\"", ji1[i].pMachineName
		    if(0 == dk3str_casecmp(ji1[i].pMachineName, hostName)) { $? ". ok"
		      rmj = 1;
		    } else {
		      if(dkT('\\') == (ji1[i].pMachineName)[0]) {
		        if(dkT('\\') == (ji1[i].pMachineName)[1]) {
			  if(0 == dk3str_casecmp(&((ji1[i].pMachineName)[2]), hostName)) {
			    rmj = 1;
			  }
		        }
		      }
		    }
		  } else {	$? ". no job host name"
		    rmj = 1;
		  }
		} else {	$? ". host name not found"
		}
	      } else {		$? ". other user name"
	      }
	    }
	    if(rmj) {		$? ". must remove job"
	      job = dkwt_cp_job_new(app, ji1[i].JobId, ji1[i].Position, ji1[i].pDocument);
	      if(job) {
	        if(!dk3sto_add(s_j, (void *)job)) {	$? "! memory"
		  dkwt_cp_job_del(job);
		} else {
		}
	      } else {		$? "! memory"
	      }
	    }
	  }
	} else {		$? ". no jobs in queue"
	}
      } else {			$? "! EnumJobs"
      }
      /*	Delete saved print jobs if any.
      */
      dk3sto_it_reset(i_j);
      while(NULL != (job = (DKWT_CP_JOB *)dk3sto_it_next(i_j))) {
        $? ". deleting print job %lu", (unsigned long)(job->jobId)
#if VERSION_20140716
        dk3sf_sprintf3(idbuf, dkT("%lu"), (unsigned long)(job->jobId));
#else
	if (!(dk3ma_um_to_string(idbuf, DK3_SIZEOF(idbuf,dkChar), (dk3_um_t)(job->jobId)))) {
	  idbuf[0] = dkT('\0');
	}
#endif
        if(SetJob(hPrinter, job->jobId, 0, NULL, JOB_CONTROL_DELETE)) {
	  /* PROGRESS: Print job deleted. */	$? ". deleted"
	  dk3app_log_5(
	    app, DK3_LL_PROGRESS, msg, 85, 86, 87, idbuf,
	    ((job->docName) ? (job->docName) : msg[88])
	  );
	} else {				$? "! failed to delete"
	  /* ERROR: Failed to delete print job! */
	  dk3app_log_5(
	    app, DK3_LL_ERROR, msg, 89, 90, 91, idbuf,
	    ((job->docName) ? (job->docName) : msg[88])
	  );
	}
      }
      ClosePrinter(hPrinter);
    } else {			$? "! failed to open printer"
      /* ERROR: Failed to open printer! */
      dk3app_log_3(app, DK3_LL_ERROR, msg, 92, 93, queue->qn);
    }
  } else {			$? "! arguments"
  }
  /*	Release memory.
  */
  if(s_j) {
    if(i_j) {
      dk3sto_it_reset(i_j);
      while(NULL !=(job = (DKWT_CP_JOB *)dk3sto_it_next(i_j))) {
        dkwt_cp_job_del(job);
      }
      dk3sto_it_close(i_j);
    }
    dk3sto_close(s_j);
  } $? "- dkwt_cp_remove_all_jobs"
}



void
dkwt_clear_printers_local(
  dk3_app_t		*app,
  dkChar const * const	*msg,
  dkChar const * const	*kwnl,
  dkChar const		*userName
)
{
  char			 peb[DKWT_PRINTER_ENUM_BUFFER_SIZE];
  dkChar		 hn[256];	/* Host name. */
  dk3_sto_t		*s_q;	/* Storage for print queues. */
  dk3_sto_it_t		*i_q;	/* Iterator for print queues storage. */
  DKWT_CP_QUEUE		*q;	/* Current queue to process. */
  PRINTER_INFO_4	*pi4;	/* Printer information array. */
  DWORD			 szpeb;	/* Size of peb buffer. */
  DWORD			 bneed;	/* Needed bytes. */
  DWORD			 np;	/* Number of printers found. */
  DWORD			 i;	/* Index of current printer. */
  DWORD			 szhn;	/* Size of host name. */
  BOOL			 res;	/* Result from printer enumeration. */
  s_q = NULL; i_q = NULL;
  if(userName) {
    hn[0] = dkT('\0');
    szhn = DK3_SIZEOF(hn,dkChar);
#if DK3_CHAR_SIZE > 1
    res = GetComputerNameExW(ComputerNameNetBIOS, hn, &szhn);
#else
    res = GetComputerNameExA(ComputerNameNetBIOS, hn, &szhn);
#endif
    if(res) {
      hn[(szhn < (DK3_SIZEOF(hn,dkChar)-1)) ? szhn : (DK3_SIZEOF(hn,dkChar)-1)] = dkT('\0');
    } else {
      szhn = 0; 
    }
    s_q = dk3sto_open_app(app);
    if(s_q) {
      dk3sto_set_comp(s_q, dkwt_cp_queue_comp, 0);
      i_q = dk3sto_it_open(s_q);
    }
    if((s_q) && (i_q)) {
      /*	Enumerate printers, fill s_q
      */
      szpeb = sizeof(peb);
      bneed = 0;
      np = 0;
#if DK3_CHAR_SIZE > 1
      res = EnumPrintersW(
        PRINTER_ENUM_LOCAL,
        NULL,
        4,
        (LPBYTE)peb,
        szpeb,
        &bneed,
        &np
      );
#else
      res = EnumPrintersA(
        PRINTER_ENUM_LOCAL,
        NULL,
        4,
        (LPBYTE)peb,
        szpeb,
        &bneed,
        &np
      );
#endif
      if(res) {
        pi4 = (PRINTER_INFO_4 *)peb;
        if(np > 0) {
          for(i = 0; i < np; i++) {
	    if(pi4[i].pPrinterName) {
	      q = dkwt_cp_queue_new(app, pi4[i].pPrinterName);
	      if(q) {
	        if(!dk3sto_add(s_q, (void *)q)) {
	          dkwt_cp_queue_del(q);
	        }
	      }
	    }
	  }
        }
      } else {
        /* ERROR: Failed to enumerate local printers */
	dk3app_log_1(app, DK3_LL_ERROR, msg, 94);
      }
      /*	Handle all the queues in i_q.
      */
      dk3sto_it_reset(i_q);
      while(NULL != (q = (DKWT_CP_QUEUE *)dk3sto_it_next(i_q))) {
        dkwt_cp_remove_all_jobs(app, msg, kwnl, userName, ((szhn > 0) ? hn : NULL), q);
      }
    }
    /*	Release memory.
    */
    if(s_q) {
      if(i_q) {
        dk3sto_it_reset(i_q);
        while(NULL != (q = (DKWT_CP_QUEUE *)dk3sto_it_next(i_q))) {
          dkwt_cp_queue_del(q);
        }
        dk3sto_it_close(i_q);
      }
      dk3sto_close(s_q);
    }
  } else {
    /* ERROR: Missing user name! */
    dk3app_log_1(app, DK3_LL_ERROR, msg, 95);
  }
}



/**	Send request to host.
	@param	app	Application structure.
	@param	msg	Localized message texts.
	@param	kwnl	Keywords, not localized.
	@param	rq	Request to send.
	@param	hn	Host name to send the request to.
*/
static
void
dkwt_cp_send_request(
  dk3_app_t		*app,
  dkChar const * const	*msg,
  dkChar const * const	*kwnl,
  char const		*rq,
  dkChar const		*hn
)
{
  char			 buf[512];
  dkChar		 eb[64];
  struct sockaddr_in	 in;
  struct hostent	*he;
  unsigned long		 ip;
  unsigned long		*ptr;
  unsigned long		**pptr;
  size_t		 lgt;
  SOCKET		 sock;
  int			 res;
  int			 cc;
  int			 ie;

  ip = 0UL;
  dk3enc_ipaddr_to_ul_app(hn, &ip, app);
  if(ip) {
    ip = dk3enc_htonl(ip);
  } else {
    ie = dk3app_get_encoding(app);
    if(dk3str_to_c8u_app(buf, sizeof(buf), hn, ie, app)) {
      he = gethostbyname(buf);
      if(he) {
        if(he->h_addr_list) {
          pptr = (unsigned long **)he->h_addr_list;
	  ptr = *pptr;
	  if(ptr) {
	    ip = *ptr;
	  }
        }
      }
    } else {
      /* ERROR: Failed to convert host name to UTF-8! */
    }
  }
  if(ip) {
    sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if(INVALID_SOCKET != sock) {
      in.sin_family = AF_INET;
      in.sin_addr.s_addr = ip;	/* already in network byte order */
      in.sin_port = dk3enc_htons(515);
      ip = dk3enc_ntohl(ip);
      sprintf(
        buf, "%lu.%lu.%lu.%lu",
        ((ip >> 24) & 0x000000FFUL),
        ((ip >> 16) & 0x000000FFUL),
        ((ip >>  8) & 0x000000FFUL),
        ( ip        & 0x000000FFUL)
      );
      if(dk3str_c8_to_str_simple_app(eb, DK3_SIZEOF(eb,dkChar), buf, app))
      {
        dk3app_log_3(app, DK3_LL_DEBUG, msg, 115, 116, eb);
      }
      res = connect(
        sock,
        (const struct sockaddr *)(&in),
        sizeof(struct sockaddr_in)
      );
      if(0 == res) {
        lgt = strlen(rq);
        res = send(sock, rq, (int)lgt, 0);
        if(res == lgt) {
          shutdown(sock, SD_SEND);
          cc = 1;
          while(cc) {
            cc = 0;
            res = recv(sock, buf, sizeof(buf), 0);
            if(res > 0) {
              cc = 1;
            }
          }
	  /* PROGRESS: Print queue cleaned up successfully. */
	  dk3app_log_1(app, DK3_LL_PROGRESS, msg, 96);
        } else {
          /* ERROR: Failed to send request! */
	  dk3app_log_1(app, DK3_LL_ERROR, msg, 97);
#if VERSION_BEFORE_20140716
	  dk3sf_sprintf3(eb, dkT("%d"), WSAGetLastError());
	  dk3app_log_3(app, DK3_LL_ERROR, msg, 113, 114, eb);
#else
	  if (dk3ma_im_to_string(eb, DK3_SIZEOF(eb,dkChar), (dk3_im_t)WSAGetLastError())) {
	    dk3app_log_3(app, DK3_LL_ERROR, msg, 113, 114, eb);
	  }
#endif
        }
      } else {
        /* ERROR: Failed to connect! */
	dk3app_log_1(app, DK3_LL_ERROR, msg, 98);
#if VERSION_BEFORE_20140716
	dk3sf_sprintf3(eb, dkT("%d"), WSAGetLastError());
	dk3app_log_3(app, DK3_LL_ERROR, msg, 113, 114, eb);
#else
	if (dk3ma_im_to_string(eb, DK3_SIZEOF(eb,dkChar), (dk3_im_t)WSAGetLastError())) {
	  dk3app_log_3(app, DK3_LL_ERROR, msg, 113, 114, eb);
	}
#endif
      }
      closesocket(sock);
    } else {
      /* ERROR: Failed to obtain socket! */
      dk3app_log_1(app, DK3_LL_ERROR, msg, 99);
    }
  } else {
    /* ERROR: Failed to find IP address for host! */
    dk3app_log_1(app, DK3_LL_ERROR, msg, 100);
  }
}



/**	Clean up one remote print queue.
	@param	app		Application structure.
	@param	msg		Localized message texts.
	@param	kwnl		Keywords, not localized.
	@param	userName	User name.
	@param	queueName	Print queue name.
*/
static
void
dkwt_clear_one_remote_queue(
  dk3_app_t		*app,
  dkChar const * const	*msg,
  dkChar const * const	*kwnl,
  dkChar const		*userName,
  dkChar const		*queueName
)
{
  dkChar		 qnb[256];	/* Copy of queue name. */
  char			 qnc[256];	/* Queue name as char. */
  char			 unc[256];	/* User name as char. */
  char			 rqc[512];	/* Request. */
  dkChar		*p1;		/* Host name part. */
  size_t		 sz;
  int			 ie;		/* Used encoding. */
  ie = dk3app_get_encoding(app);
  if(dk3str_len(queueName) < DK3_SIZEOF(qnb,dkChar)) {
    dk3str_cpy_not_overlapped(qnb, queueName);
    p1 = dk3str_chr(qnb, dkT('@'));
    if(p1) {
      *(p1++) = dkT('\0');
      p1 = dk3str_start(p1, NULL);
      if(p1) {
        dk3str_normalize(qnb, NULL, dkT(' '));
	if(dk3str_len(qnb) > 0) {
	  if(dk3str_to_c8u_app(qnc, sizeof(qnc), qnb, ie, app)) {
	    if(dk3str_to_c8u_app(unc, sizeof(unc), userName, ie, app)) {
	      sz = strlen(qnc) + strlen(unc) + 8;
	      if(sz < sizeof(rqc)) {
	        sprintf(rqc, "%c%s %s all\n", 0x05, qnc, unc);
		/* PROGRESS: Cleaning up remote print queue ... */
		dk3app_log_3(app, DK3_LL_PROGRESS, msg, 101, 102, queueName);
		dkwt_cp_send_request(app, msg, kwnl, rqc, p1);
	      } else {
	        /* ERROR: Reqeust becomes too long!  */
		dk3app_log_1(app, DK3_LL_ERROR, msg, 103);
	      }
	    } else {
	      /* ERROR: Failed to re-encode user name to UTF-8! */
	    }
	  } else {
	    /* ERROR: Failed to re-encode the queue name to UTF-8! */
	  }
	} else {
	  /* ERROR: Empty queue name! */
	  dk3app_log_3(app, DK3_LL_ERROR, msg, 104, 105, queueName);
	}
      } else {
        /* ERROR: Empty host name! */
	dk3app_log_3(app, DK3_LL_ERROR, msg, 106, 107, queueName);
      }
    } else {
      /* ERROR: Not a queue@host name! */
      dk3app_log_3(app, DK3_LL_ERROR, msg, 108, 109, queueName);
    }
  } else {
    /* ERROR: Queue name too long! */
    dk3app_log_3(app, DK3_LL_ERROR, msg, 110, 111, queueName);
  }
}



void
dkwt_clear_printers_remote(
  dk3_app_t		*app,
  dkChar const * const	*msg,
  dkChar const * const	*kwnl,
  dkChar const		*userName,
  dk3_sto_it_t		*iterator
)
{
  WORD		 vrq;
  WSADATA	 wsa;
  dkChar const	*qn;
  vrq = MAKEWORD(2,0);
  if(0 == WSAStartup(vrq, &wsa)) {
    dk3sto_it_reset(iterator);
    while(NULL != (qn = (dkChar const *)dk3sto_it_next(iterator))) {
      dkwt_clear_one_remote_queue(app, msg, kwnl, userName, qn);
    }
    (void)WSACleanup();
  } else {
    /* ERROR: Failed to initialize Windows socket! */
    dk3app_log_1(app, DK3_LL_ERROR, msg, 112);
  }
}



/* vim: set ai sw=2 : */