printers.c

ipp打印机服务器原代码 注意：请将ipp.gz改为ipp.tar.gz 然后使用tar zxvf ipp.tar.gz解压 站长注意

      for (i = 0; i < NumBanners; i ++)
	attr->values[i + 1].string.text = strdup(Banners[i].name);
    }
  }
#endif

  DEBUG_printf(("Function CreateCommonData() \n")); 
}

#if	0
/*
 * 'DeleteAllPrinters()' - Delete all printers from the system.
 */

void
DeleteAllPrinters(void)
{
  printer_t	*p,	/* Pointer to current printer/class */
		*next;	/* Pointer to next printer in list */


  for (p = Printers; p != NULL; p = next)
  {
    next = p->next;

    if (!(p->type & CUPS_PRINTER_CLASS))
      DeletePrinter(p, 0);
  }
}


/*
 * 'DeletePrinter()' - Delete a printer from the system.
 */

void
DeletePrinter(printer_t *p,		/* I - Printer to delete */
	      int       update)		/* I - Update printers.conf? */
{
  int		i;			/* Looping var */
  printer_t	*current,		/* Current printer in list */
		*prev;			/* Previous printer in list */
#ifdef __sgi
  char		filename[1024];		/* Interface script filename */
#endif /* __sgi */


  DEBUG_printf(("DeletePrinter(%08x): p->name = \"%s\"...\n", p, p->name));

 /*
  * Range check input...
  */

  if (p == NULL)
    return;

 /*
  * Find the printer in the list...
  */

  for (prev = NULL, current = Printers;
       current != NULL;
       prev = current, current = current->next)
    if (p == current)
      break;

  if (current == NULL)
  {
    LogMessage(L_ERROR, "Tried to delete a non-existent printer %s!\n",
               p->name);
    return;
  }

 /*
  * Remove the printer from the list...
  */

  if (prev == NULL)
    Printers = p->next;
  else
    prev->next = p->next;

  NumPrinters --;

 /*
  * Stop printing on this printer...
  */

  StopPrinter(p, update);

 /*
  * If this printer is the next for browsing, point to the next one...
  */

  if (p == BrowseNext)
    BrowseNext = p->next;

 /*
  * Remove the dummy interface/icon/option files under IRIX...
  */

#ifdef __sgi
  snprintf(filename, sizeof(filename), "/var/spool/lp/interface/%s", p->name);
  unlink(filename);

  snprintf(filename, sizeof(filename), "/var/spool/lp/gui_interface/ELF/%s.gui",
           p->name);
  unlink(filename);

  snprintf(filename, sizeof(filename), "/var/spool/lp/activeicons/%s", p->name);
  unlink(filename);

  snprintf(filename, sizeof(filename), "/var/spool/lp/pod/%s.config", p->name);
  unlink(filename);

  snprintf(filename, sizeof(filename), "/var/spool/lp/pod/%s.status", p->name);
  unlink(filename);

  snprintf(filename, sizeof(filename), "/var/spool/lp/member/%s", p->name);
  unlink(filename);
#endif /* __sgi */

 /*
  * If p is the default printer, assign the next one...
  */

  if (p == DefaultPrinter)
  {
    DefaultPrinter = Printers;

    WritePrintcap();
  }

 /*
  * Remove this printer from any classes...
  */

  if (!(p->type & CUPS_PRINTER_IMPLICIT))
    DeletePrinterFromClasses(p);

 /*
  * Free all memory used by the printer...
  */

  if (p->printers != NULL)
    free(p->printers);

  if (MaxPrinterHistory)
  {
    for (i = 0; i < p->num_history; i ++)
      ippDelete(p->history[i]);

    free(p->history);
  }

  for (i = 0; i < p->num_reasons; i ++)
    free(p->reasons[i]);

  ippDelete(p->attrs);

  DeletePrinterFilters(p);

  FreePrinterUsers(p);
  FreeQuotas(p);

  ClearString(&p->uri);
  ClearString(&p->hostname);
  ClearString(&p->name);
  ClearString(&p->location);
  ClearString(&p->make_model);
  ClearString(&p->info);
  ClearString(&p->job_sheets[0]);
  ClearString(&p->job_sheets[1]);
  ClearString(&p->device_uri);

  free(p);

 /*
  * Write a new /etc/printcap file...
  */

  WritePrintcap();
}


/*
 * 'DeletePrinterFilters()' - Delete all MIME filters for a printer.
 */

void
DeletePrinterFilters(printer_t *p)	/* I - Printer to remove from */
{
  int		i;			/* Looping var */
  mime_filter_t	*filter;		/* MIME filter looping var */


 /*
  * Range check input...
  */

  if (p == NULL)
    return;

 /*
  * Remove all filters from the MIME database that have a destination
  * type == printer...
  */

  for (filter = MimeDatabase->filters, i = MimeDatabase->num_filters;
       i > 0;
       i --, filter ++)
    if (filter->dst == p->filetype)
    {
     /*
      * Delete the current filter...
      */

      MimeDatabase->num_filters --;

      if (i > 1)
        memmove(filter, filter + 1, sizeof(mime_filter_t) * (i - 1));

      filter --;
    }
}
#endif

/*
 * 'FindDest()' - Find a destination in the list.
 */

printer_t *			/* O - Destination in list */
FindDest(const char *name)	/* I - Name of printer or class to find */
{
  printer_t	*p;		/* Current destination */
  int		diff;		/* Difference */


  for (p = Printers; p != NULL; p = p->next)
    if ((diff = strcasecmp(name, p->name)) == 0)/* name == p->name */
      return (p);
    else if (diff < 0)				/* name < p->name */
      return (NULL);

  return (NULL);
}


/*
 * 'FindPrinter()' - Find a printer in the list.
 */

printer_t *			/* O - Printer in list */
FindPrinter(const char *name)	/* I - Name of printer to find */
{
  printer_t	*p;		/* Current printer */
  int		diff;		/* Difference */


  for (p = Printers; p != NULL; p = p->next)
    if ((diff = strcasecmp(name, p->name)) == 0 )/* &&
        !(p->type & CUPS_PRINTER_CLASS))	name == p->name */
      return (p);
    else if (diff < 0)				/* name < p->name */
      return (NULL);

  return (NULL);
}

#if	0
/*
 * 'FreePrinterUsers()' - Free allow/deny users.
 */

void
FreePrinterUsers(printer_t *p)	/* I - Printer */
{
  int	i;			/* Looping var */


  if (!p || !p->num_users)
    return;

  for (i = 0; i < p->num_users; i ++)
    free((void *)p->users[i]);

  free(p->users);

  p->num_users = 0;
  p->users     = NULL;
}
#endif

/*
 * 'LoadAllPrinters()' - Load printers from the printers.conf file.
 */

void
LoadAllPrinters(void)
{
  cups_file_t	*fp;			/* printers.conf file */
  int		linenum;		/* Current line number */
  int		len;			/* Length of line */
  char		line[1024],		/* Line from file */
		name[256],		/* Parameter name */
		*nameptr,		/* Pointer into name */
		*value,			/* Pointer to value */
		*valueptr;		/* Pointer into value */
  printer_t	*p;			/* Current printer */


 /*
  * Open the printers.conf file...
  */

  snprintf(line, sizeof(line), "%s/printers.conf", ServerRoot);

  DEBUG_printf(("open(%s)\n",line)); 
  if ((fp = cupsFileOpen(line, "r")) == NULL)
  {
    LogMessage(L_ERROR, "LoadAllPrinters: Unable to open %s - %s", line,
               strerror(errno));
    return;
  }

 /*
  * Read printer configurations until we hit EOF...
  */

  linenum = 0;
  p       = NULL;

  while (cupsFileGets(fp, line, sizeof(line)) != NULL)
  {
    linenum ++;

   /*
    * Skip comment lines...
    */

    if (line[0] == '#')
      continue;

   /*
    * Strip trailing whitespace, if any...
    */

    len = strlen(line);

    while (len > 0 && isspace(line[len - 1] & 255))
    {
      len --;
      line[len] = '\0';
    }

   /*
    * Extract the name from the beginning of the line...
    */

    for (value = line; isspace(*value & 255); value ++);

    for (nameptr = name; *value != '\0' && !isspace(*value & 255) &&
                             nameptr < (name + sizeof(name) - 1);)
      *nameptr++ = *value++;
    *nameptr = '\0';

    while (isspace(*value & 255))
      value ++;

    if (name[0] == '\0')
      continue;

   /*
    * Decode the directive...
    */

    if (strcmp(name, "<Printer") == 0 ||
        strcmp(name, "<DefaultPrinter") == 0)
    {
     /*
      * <Printer name> or <DefaultPrinter name>
      */

      if (line[len - 1] == '>' && p == NULL)
      {
       /*
        * Add the printer and a base file type...
	*/

        line[len - 1] = '\0';

        LogMessage(L_DEBUG, "LoadAllPrinters: Loading printer %s...", value);

        p = AddPrinter(value);
	p->accepting = 1;
	p->state     = IPP_PRINTER_IDLE;

       /*
        * Set the default printer as needed...
	*/

        if (strcmp(name, "<DefaultPrinter") == 0)
	  DefaultPrinter = p;
      }
      else
      {
        LogMessage(L_ERROR, "Syntax error on line %d of printers.conf.",
	           linenum);
        return;
      }
    }
    else if (strcmp(name, "</Printer>") == 0)
    {
      if (p != NULL)
      {
        SetPrinterAttrs(p);
	AddPrinterHistory(p);
        p = NULL;
      }
      else
      {
        LogMessage(L_ERROR, "Syntax error on line %d of printers.conf.",
	           linenum);
        return;
      }
    }
    else if (p == NULL)
    {
      LogMessage(L_ERROR, "Syntax error on line %d of printers.conf.",
	         linenum);
      return;
    }
    else if (strcmp(name, "Info") == 0)
      SetString(&p->info, value);
    else if (strcmp(name, "Location") == 0)
      SetString(&p->location, value);
    else if (strcmp(name, "DeviceURI") == 0)
      SetString(&p->device_uri, value);
    else if (strcmp(name, "State") == 0)
    {
     /*
      * Set the initial queue state...
      */

      if (strcasecmp(value, "idle") == 0)
        p->state = IPP_PRINTER_IDLE;
      else if (strcasecmp(value, "stopped") == 0)
        p->state = IPP_PRINTER_STOPPED;
    }
    else if (strcmp(name, "StateMessage") == 0)
    {
     /*
      * Set the initial queue state message...
      */

      while (isspace(*value & 255))
        value ++;

      strlcpy(p->state_message, value, sizeof(p->state_message));
    }
    else if (strcmp(name, "Accepting") == 0)
    {
     /*
      * Set the initial accepting state...
      */

      if (strcasecmp(value, "yes") == 0)
        p->accepting = 1;
      else
        p->accepting = 0;
    }
	

    else if (strcmp(name, "JobSheets") == 0)
    {
     /*
      * Set the initial job sheets...
      */

      for (valueptr = value; *valueptr && !isspace(*valueptr & 255); valueptr ++);

      if (*valueptr)
        *valueptr++ = '\0';

      SetString(&p->job_sheets[0], value);

      while (isspace(*valueptr & 255))
        valueptr ++;

      if (*valueptr)
      {
        for (value = valueptr; *valueptr && !isspace(*valueptr & 255); valueptr ++);

	if (*valueptr)
          *valueptr++ = '\0';

	SetString(&p->job_sheets[1], value);
      }
    }


    else if (strcmp(name, "AllowUser") == 0)
    {
      p->deny_users = 0;
      AddPrinterUser(p, value);
    }
    else if (strcmp(name, "DenyUser") == 0)