samba-mirror/source/printing/nt_printing.c

/* 
 *  Unix SMB/Netbios implementation.
 *  Version 1.9.
 *  RPC Pipe client / server routines
 *  Copyright (C) Andrew Tridgell              1992-2000,
 *  Copyright (C) Jean François Micouleau      1998-2000.
 *  
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  
 *  This program 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 General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "includes.h"

extern int DEBUGLEVEL;

static TDB_CONTEXT *tdb; /* used for driver files */

#define FORMS_PREFIX "FORMS/"
#define DRIVERS_PREFIX "DRIVERS/"
#define PRINTERS_PREFIX "PRINTERS/"

#define DATABASE_VERSION 1

/****************************************************************************
open the NT printing tdb
****************************************************************************/
int nt_printing_init(void)
{
	static pid_t local_pid;

	if (tdb && local_pid == sys_getpid()) return True;
	tdb = tdb_open(lock_path("ntdrivers.tdb"), 0, 0, O_RDWR|O_CREAT, 0600);
		DEBUG(0,("Failed to open nt drivers database\n"));

	local_pid = sys_getpid();

	/* handle a Samba upgrade */
	tdb_writelock(tdb);
	if (tdb_fetch_int(tdb, "INFO/version") != DATABASE_VERSION) {
		tdb_traverse(tdb, (tdb_traverse_func)tdb_delete, NULL);
		tdb_store_int(tdb, "INFO/version", DATABASE_VERSION);
	}
	tdb_writeunlock(tdb);

	return True;
}

  
/****************************************************************************
get a form struct list
****************************************************************************/
int get_ntforms(nt_forms_struct **list)
{
	TDB_DATA kbuf, dbuf;
	nt_forms_struct form;
	int ret;
	int n = 0;

	for (kbuf = tdb_firstkey(tdb); 
	     kbuf.dptr; 
	     free(kbuf.dptr), kbuf = tdb_nextkey(tdb, kbuf)) {
		if (strncmp(kbuf.dptr, FORMS_PREFIX, strlen(FORMS_PREFIX)) != 0) continue;
		
		dbuf = tdb_fetch(tdb, kbuf);
		if (!dbuf.dptr) continue;

		fstrcpy(form.name, kbuf.dptr+strlen(FORMS_PREFIX));
		ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddddddd",
				 &form.flag, &form.width, &form.length, &form.left,
				 &form.top, &form.right, &form.bottom);
		free(dbuf.dptr);
		if (ret != dbuf.dsize) continue;

		*list = Realloc(*list, sizeof(nt_forms_struct)*(n+1));
		(*list)[n] = form;
		n++;
	}

	return n;
}

/****************************************************************************
write a form struct list
****************************************************************************/
int write_ntforms(nt_forms_struct **list, int number)
{
	pstring buf, key;
	int len;
	TDB_DATA kbuf,dbuf;
	int i;

	for (i=0;i<number;i++) {
		len = tdb_pack(buf, sizeof(buf), "ddddddd", 
			       (*list)[i].flag, (*list)[i].width, (*list)[i].length,
			       (*list)[i].left, (*list)[i].top, (*list)[i].right, 
			       (*list)[i].bottom);
		if (len > sizeof(buf)) break;
		slprintf(key, sizeof(key), "%s/%s", FORMS_PREFIX, (*list)[i].name);
		kbuf.dsize = strlen(key)+1;
		kbuf.dptr = key;
		dbuf.dsize = len;
		dbuf.dptr = buf;
		if (tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) != 0) break;
       }

       return i;
}

/****************************************************************************
add a form struct at the end of the list
****************************************************************************/
BOOL add_a_form(nt_forms_struct **list, const FORM *form, int *count)
{
	int n=0;
	BOOL update;
	fstring form_name;

	/* 
	 * NT tries to add forms even when 
	 * they are already in the base
	 * only update the values if already present
	 */

	update=False;
	
	unistr2_to_ascii(form_name, &(form->name), sizeof(form_name)-1);
	for (n=0; n<*count && update==False; n++)
	{
		if (!strncmp((*list)[n].name, form_name, strlen(form_name)))
		{
			DEBUG(103, ("NT workaround, [%s] already exists\n", form_name));
			update=True;
		}
	}

	if (update==False)
	{
		if((*list=Realloc(*list, (n+1)*sizeof(nt_forms_struct))) == NULL)
			return False;
		unistr2_to_ascii((*list)[n].name, &(form->name), sizeof((*list)[n].name)-1);
		(*count)++;
	}
	
	(*list)[n].flag=form->flags;
	(*list)[n].width=form->size_x;
	(*list)[n].length=form->size_y;
	(*list)[n].left=form->left;
	(*list)[n].top=form->top;
	(*list)[n].right=form->right;
	(*list)[n].bottom=form->bottom;

	return True;
}

/****************************************************************************
update a form struct 
****************************************************************************/
void update_a_form(nt_forms_struct **list, const FORM *form, int count)
{
	int n=0;
	fstring form_name;
	unistr2_to_ascii(form_name, &(form->name), sizeof(form_name)-1);

	DEBUG(106, ("[%s]\n", form_name));
	for (n=0; n<count; n++)
	{
		DEBUGADD(106, ("n [%d]:[%s]\n", n, (*list)[n].name));
		if (!strncmp((*list)[n].name, form_name, strlen(form_name)))
			break;
	}

	if (n==count) return;

	(*list)[n].flag=form->flags;
	(*list)[n].width=form->size_x;
	(*list)[n].length=form->size_y;
	(*list)[n].left=form->left;
	(*list)[n].top=form->top;
	(*list)[n].right=form->right;
	(*list)[n].bottom=form->bottom;
}
 
/****************************************************************************
get the nt drivers list

traverse the database and look-up the matching names
****************************************************************************/
int get_ntdrivers(fstring **list, char *architecture)
{
	int total=0;
	fstring short_archi;
	pstring key;
	TDB_DATA kbuf;

	get_short_archi(short_archi, architecture);
	slprintf(key, sizeof(key), "%s/%s/", DRIVERS_PREFIX, short_archi);

	for (kbuf = tdb_firstkey(tdb); 
	     kbuf.dptr; 
	     free(kbuf.dptr), kbuf = tdb_nextkey(tdb, kbuf)) {
		if (strncmp(kbuf.dptr, key, strlen(key)) != 0) continue;
		
		if((*list = Realloc(*list, sizeof(fstring)*(total+1))) == NULL)
			return -1;

		fstrcpy((*list)[total], kbuf.dptr+strlen(key));
		total++;
	}

	return(total);
}

/****************************************************************************
function to do the mapping between the long architecture name and
the short one.
****************************************************************************/
void get_short_archi(char *short_archi, char *long_archi)
{
	struct table {
		char *long_archi;
		char *short_archi;
	};
	
	struct table archi_table[]=
	{
		{"Windows 4.0",          "WIN40"    },
		{"Windows NT x86",       "W32X86"   },
		{"Windows NT R4000",     "W32mips"  },
		{"Windows NT Alpha_AXP", "W32alpha" },
		{"Windows NT PowerPC",   "W32ppc"   },
		{NULL,                   ""         }
	};
	
	int i=-1;

	DEBUG(107,("Getting architecture dependant directory\n"));
	do {
		i++;
	} while ( (archi_table[i].long_archi!=NULL ) && strncmp(long_archi, archi_table[i].long_archi, strlen(long_archi)) );

	if (archi_table[i].long_archi==NULL)
	{
		DEBUGADD(107,("Unknown architecture [%s] !\n", long_archi));
	}
	StrnCpy (short_archi, archi_table[i].short_archi, strlen(archi_table[i].short_archi));

	DEBUGADD(108,("index: [%d]\n", i));
	DEBUGADD(108,("long architecture: [%s]\n", long_archi));
	DEBUGADD(108,("short architecture: [%s]\n", short_archi));
}

/****************************************************************************
****************************************************************************/
static uint32 add_a_printer_driver_3(NT_PRINTER_DRIVER_INFO_LEVEL_3 *driver)
{
	int len, buflen;
	fstring architecture;
	pstring key;
	char *buf;
	int i, ret;
	TDB_DATA kbuf, dbuf;

	get_short_archi(architecture, driver->environment);
	slprintf(key, sizeof(key), "%s/%s/%s", DRIVERS_PREFIX, architecture, driver->name);

	/*
	 * cversion must be 2.
	 * when adding a printer ON the SERVER
	 * rpcAddPrinterDriver defines it to zero
	 * which is wrong !!!
	 *
	 * JFM, 4/14/99
	 */
	driver->cversion=2;
	
	buf = NULL;
	len = buflen = 0;

 again:
	len = 0;
	len += tdb_pack(buf+len, buflen-len, "dffffffff", 
			driver->cversion,
			driver->name,
			driver->environment,
			driver->driverpath,
			driver->datafile,
			driver->configfile,
			driver->helpfile,
			driver->monitorname,
			driver->defaultdatatype);
	
	if (driver->dependentfiles) {
		for (i=0; *driver->dependentfiles[i]; i++) {
			len += tdb_pack(buf+len, buflen-len, "f", 
					driver->dependentfiles[i]);
		}
	}

	if (len != buflen) {
		buf = (char *)Realloc(buf, len);
		buflen = len;
		goto again;
	}


	kbuf.dptr = key;
	kbuf.dsize = strlen(key)+1;
	dbuf.dptr = buf;
	dbuf.dsize = len;
	
	ret = tdb_store(tdb, kbuf, dbuf, TDB_REPLACE);

	free(buf);
	return ret;
}

/****************************************************************************
****************************************************************************/
static uint32 add_a_printer_driver_6(NT_PRINTER_DRIVER_INFO_LEVEL_6 *driver)
{
	NT_PRINTER_DRIVER_INFO_LEVEL_3 info3;

	info3.cversion = driver->version;
	fstrcpy(info3.environment,driver->environment);
	fstrcpy(info3.driverpath,driver->driverpath);
	fstrcpy(info3.datafile,driver->datafile);
	fstrcpy(info3.configfile,driver->configfile);
	fstrcpy(info3.helpfile,driver->helpfile);
	fstrcpy(info3.monitorname,driver->monitorname);
	fstrcpy(info3.defaultdatatype,driver->defaultdatatype);
	info3.dependentfiles = driver->dependentfiles;

	return add_a_printer_driver_3(&info3);
}


/****************************************************************************
****************************************************************************/
static uint32 get_a_printer_driver_3_default(NT_PRINTER_DRIVER_INFO_LEVEL_3 **info_ptr, fstring in_prt, fstring in_arch)
{
	NT_PRINTER_DRIVER_INFO_LEVEL_3 info;
	int snum;

	ZERO_STRUCT(info);

	snum = lp_servicenumber(in_prt);

	fstrcpy(info.name, lp_printerdriver(snum));
	fstrcpy(info.defaultdatatype, "RAW");
	
	info.dependentfiles=(fstring *)malloc(sizeof(fstring));
	fstrcpy(info.dependentfiles[0], "");

	*info_ptr = memdup(&info, sizeof(info));
	
	return 0;	
}

/****************************************************************************
****************************************************************************/
static uint32 get_a_printer_driver_3(NT_PRINTER_DRIVER_INFO_LEVEL_3 **info_ptr, fstring in_prt, fstring in_arch)
{
	NT_PRINTER_DRIVER_INFO_LEVEL_3 driver;
	TDB_DATA kbuf, dbuf;
	fstring architecture;
	int len = 0;
	int i;
	pstring key;

	ZERO_STRUCT(driver);

	get_short_archi(architecture, in_arch);
	slprintf(key, sizeof(key), "%s/%s/%s", DRIVERS_PREFIX, architecture, in_prt);

	kbuf.dptr = key;
	kbuf.dsize = strlen(key)+1;
	
	dbuf = tdb_fetch(tdb, kbuf);
	if (!dbuf.dptr) return get_a_printer_driver_3_default(info_ptr, in_prt, in_arch);

	len += tdb_unpack(dbuf.dptr, dbuf.dsize, "dffffffff", 
			  &driver.cversion,
			  driver.name,
			  driver.environment,
			  driver.driverpath,
			  driver.datafile,
			  driver.configfile,
			  driver.helpfile,
			  driver.monitorname,
			  driver.defaultdatatype);

	i=0;
	while (len < dbuf.dsize) {
		driver.dependentfiles = (fstring *)Realloc(driver.dependentfiles,
							 sizeof(fstring)*(i+2));
		len += tdb_unpack(dbuf.dptr+len, dbuf.dsize-len, "f", 
				  driver.dependentfiles[i]);
		i++;
	}
	fstrcpy(driver.dependentfiles[i], "");

	free(dbuf.dptr);
	return 0;
}

/****************************************************************************
debugging function, dump at level 6 the struct in the logs
****************************************************************************/
static uint32 dump_a_printer_driver(NT_PRINTER_DRIVER_INFO_LEVEL driver, uint32 level)
{
	uint32 success;
	NT_PRINTER_DRIVER_INFO_LEVEL_3 *info3;
	int i;
	
	DEBUG(106,("Dumping printer driver at level [%d]\n", level));
	
	switch (level)
	{
		case 3: 
		{
			if (driver.info_3 == NULL)
				success=5;
			else {
				info3=driver.info_3;
			
				DEBUGADD(106,("version:[%d]\n",         info3->cversion));
				DEBUGADD(106,("name:[%s]\n",            info3->name));
				DEBUGADD(106,("environment:[%s]\n",     info3->environment));
				DEBUGADD(106,("driverpath:[%s]\n",      info3->driverpath));
				DEBUGADD(106,("datafile:[%s]\n",        info3->datafile));
				DEBUGADD(106,("configfile:[%s]\n",      info3->configfile));
				DEBUGADD(106,("helpfile:[%s]\n",        info3->helpfile));
				DEBUGADD(106,("monitorname:[%s]\n",     info3->monitorname));
				DEBUGADD(106,("defaultdatatype:[%s]\n", info3->defaultdatatype));
				
				for (i=0; *info3->dependentfiles[i]; i++) {
					DEBUGADD(106,("dependentfile:[%s]\n", 
						      info3->dependentfiles[i]));
				}
				success=0;
			}
			break;
		}
		default:
			DEBUGADD(1,("Level not implemented\n"));
			success=1;
			break;
	}
	
	return (success);
}

/****************************************************************************
****************************************************************************/
static int pack_devicemode(NT_DEVICEMODE *nt_devmode, char *buf, int buflen)
{
	int len = 0;

	len += tdb_pack(buf+len, buflen-len, "p", nt_devmode);

	if (!nt_devmode) return len;

	len += tdb_pack(buf+len, buflen-len, "fddddddddddddddddddddddp",
		       nt_devmode->formname,
		       nt_devmode->specversion,
		       nt_devmode->driverversion,
		       nt_devmode->size,
		       nt_devmode->driverextra,
		       nt_devmode->fields,
		       nt_devmode->orientation,
		       nt_devmode->papersize,
		       nt_devmode->paperlength,
		       nt_devmode->paperwidth,
		       nt_devmode->scale,
		       nt_devmode->copies,
		       nt_devmode->defaultsource,
		       nt_devmode->printquality,
		       nt_devmode->color,
		       nt_devmode->duplex,
		       nt_devmode->yresolution,
		       nt_devmode->ttoption,
		       nt_devmode->collate,
		       nt_devmode->icmmethod,
		       nt_devmode->icmintent,
		       nt_devmode->mediatype,
		       nt_devmode->dithertype,
		       nt_devmode->private);
	
	if (nt_devmode->private) {
		len += tdb_pack(buf+len, buflen-len, "B",
				nt_devmode->driverextra,
				nt_devmode->private);
	}

	return len;
}

/****************************************************************************
****************************************************************************/
static int pack_specifics(NT_PRINTER_PARAM *param, char *buf, int buflen)
{
	int len = 0;

	while (param != NULL) {
		len += tdb_pack(buf+len, buflen-len, "pfdB",
				param,
				param->value, 
				param->type, 
				param->data_len,
				param->data);
		param=param->next;	
	}

	len += tdb_pack(buf+len, buflen-len, "p", param);

	return len;
}


/****************************************************************************
delete a printer - this just deletes the printer info file, any open
handles are not affected
****************************************************************************/
uint32 del_a_printer(char *portname)
{
	pstring key;
	TDB_DATA kbuf;

	slprintf(key, sizeof(key), "%s/%s",
		 PRINTERS_PREFIX, portname);

	kbuf.dptr=key;
	kbuf.dsize=strlen(key)+1;

	tdb_delete(tdb, kbuf);
	return 0;
}

/****************************************************************************
****************************************************************************/
static uint32 add_a_printer_2(NT_PRINTER_INFO_LEVEL_2 *info)
{
	pstring key;
	char *buf;
	int buflen, len, ret;
	TDB_DATA kbuf, dbuf;
	
	/* 
	 * in addprinter: no servername and the printer is the name
	 * in setprinter: servername is \\server
	 *                and printer is \\server\\printer
	 *
	 * Samba manages only local printers.
	 * we currently don't support things like path=\\other_server\printer
	 */
	if (info->servername[0]!='\0')
	{
		trim_string(info->printername, info->servername, NULL);
		trim_string(info->printername, "\\", NULL);
		info->servername[0]='\0';
	}

	/*
	 * JFM: one day I'll forget.
	 * below that's info->portname because that's the SAMBA sharename
	 * and I made NT 'thinks' it's the portname
	 * the info->sharename is the thing you can name when you add a printer
	 * that's the short-name when you create shared printer for 95/98
	 * So I've made a limitation in SAMBA: you can only have 1 printer model
	 * behind a SAMBA share.
	 */


	buf = NULL;
	buflen = 0;

 again:	
	len = 0;
	len += tdb_pack(buf+len, buflen-len, "dddddddddddffffffffff",
			info->attributes,
			info->priority,
			info->default_priority,
			info->starttime,
			info->untiltime,
			info->status,
			info->cjobs,
			info->averageppm,
			info->changeid,
			info->c_setprinter,
			info->setuptime,
			info->servername,
			info->printername,
			info->sharename,
			info->portname,
			info->drivername,
			info->location,
			info->sepfile,
			info->printprocessor,
			info->datatype,
			info->parameters);

	len += pack_devicemode(info->devmode, buf+len, buflen-len);
	len += pack_specifics(info->specific, buf+len, buflen-len);

	if (buflen != len) {
		buf = (char *)Realloc(buf, len);
		buflen = len;
		goto again;
	}
	

	slprintf(key, sizeof(key), "%s/%s",
		 PRINTERS_PREFIX, info->portname);

	kbuf.dptr = key;
	kbuf.dsize = strlen(key)+1;
	dbuf.dptr = buf;
	dbuf.dsize = len;

	ret = tdb_store(tdb, kbuf, dbuf, TDB_REPLACE);

	free(buf);

	return ret;
}


/****************************************************************************
****************************************************************************/
BOOL add_a_specific_param(NT_PRINTER_INFO_LEVEL_2 *info_2, NT_PRINTER_PARAM *param)
{
	NT_PRINTER_PARAM *current;
	
	DEBUG(108,("add_a_specific_param\n"));	

	param->next=NULL;
	
	if (info_2->specific == NULL)
	{
		info_2->specific=param;
	}
	else
	{
		current=info_2->specific;		
		while (current->next != NULL) {
			current=current->next;
		}		
		current->next=param;
	}
	return (True);
}

/****************************************************************************
****************************************************************************/
BOOL unlink_specific_param_if_exist(NT_PRINTER_INFO_LEVEL_2 *info_2, NT_PRINTER_PARAM *param)
{
	NT_PRINTER_PARAM *current;
	NT_PRINTER_PARAM *previous;
	
	current=info_2->specific;
	previous=current;
	
	if (current==NULL) return (False);
	
	if ( !strcmp(current->value, param->value) && 
	    (strlen(current->value)==strlen(param->value)) )
	{
		DEBUG(109,("deleting first value\n"));
		info_2->specific=current->next;
		safe_free(current->data);
		free(current);
		DEBUG(109,("deleted first value\n"));
		return (True);
	}

	current=previous->next;
		
	while ( current!=NULL )
	{
		if (!strcmp(current->value, param->value) &&
		    strlen(current->value)==strlen(param->value) )
		{
			DEBUG(109,("deleting current value\n"));
			previous->next=current->next;
			free(current);
			DEBUG(109,("deleted current value\n"));
			return(True);
		}
		
		previous=previous->next;
		current=current->next;
	}
	return (False);
}

/****************************************************************************
 Clean up and deallocate a (maybe partially) allocated NT_PRINTER_PARAM.
****************************************************************************/
static void free_nt_printer_param(NT_PRINTER_PARAM **param_ptr)
{
	NT_PRINTER_PARAM *param = *param_ptr;

	if(param == NULL)
		return;

	DEBUG(106,("free_nt_printer_param: deleting param [%s]\n", param->value));

	if(param->data)
		free(param->data);

	free(param);
	*param_ptr = NULL;
}

/****************************************************************************
 Clean up and deallocate a (maybe partially) allocated NT_DEVICEMODE.
****************************************************************************/
static void free_nt_devicemode(NT_DEVICEMODE **devmode_ptr)
{
	NT_DEVICEMODE *nt_devmode = *devmode_ptr;

	if(nt_devmode == NULL)
		return;

	DEBUG(106,("free_nt_devicemode: deleting DEVMODE\n"));

	if(nt_devmode->private)
		free(nt_devmode->private);

	free(nt_devmode);
	*devmode_ptr = NULL;
}

/****************************************************************************
 Clean up and deallocate a (maybe partially) allocated NT_PRINTER_INFO_LEVEL_2.
****************************************************************************/
static void free_nt_printer_info_level_2(NT_PRINTER_INFO_LEVEL_2 **info_ptr)
{
	NT_PRINTER_INFO_LEVEL_2 *info = *info_ptr;
	NT_PRINTER_PARAM *param_ptr;

	if(info == NULL)
		return;

	DEBUG(106,("free_nt_printer_info_level_2: deleting info\n"));

	free_nt_devicemode(&info->devmode);
	free_sec_desc_buf(&info->secdesc);

	for(param_ptr = info->specific; param_ptr; ) {
		NT_PRINTER_PARAM *tofree = param_ptr;

		param_ptr = param_ptr->next;
		free_nt_printer_param(&tofree);
	}

	free(info);
	*info_ptr = NULL;
}


/****************************************************************************
****************************************************************************/
static int unpack_devicemode(NT_DEVICEMODE **nt_devmode, char *buf, int buflen)
{
	int len = 0;
	NT_DEVICEMODE devmode;

	ZERO_STRUCT(devmode);

	len += tdb_unpack(buf+len, buflen-len, "p", *nt_devmode);

	if (!*nt_devmode) return len;

	len += tdb_unpack(buf+len, buflen-len, "fddddddddddddddddddddddp",
		       devmode.formname,
		       &devmode.specversion,
		       &devmode.driverversion,
		       &devmode.size,
		       &devmode.driverextra,
		       &devmode.fields,
		       &devmode.orientation,
		       &devmode.papersize,
		       &devmode.paperlength,
		       &devmode.paperwidth,
		       &devmode.scale,
		       &devmode.copies,
		       &devmode.defaultsource,
		       &devmode.printquality,
		       &devmode.color,
		       &devmode.duplex,
		       &devmode.yresolution,
		       &devmode.ttoption,
		       &devmode.collate,
		       &devmode.icmmethod,
		       &devmode.icmintent,
		       &devmode.mediatype,
		       &devmode.dithertype,
		       &devmode.private);
	
	if (devmode.private) {
		devmode.private = (uint8 *)malloc(devmode.driverextra);
		if (!devmode.private) return 2;
		len += tdb_unpack(buf+len, buflen-len, "B",
				  devmode.driverextra,
				  devmode.private);
	}

	*nt_devmode = (NT_DEVICEMODE *)memdup(&devmode, sizeof(devmode));

	return len;
}

/****************************************************************************
****************************************************************************/
static int unpack_specifics(NT_PRINTER_PARAM **list, char *buf, int buflen)
{
	int len = 0;
	NT_PRINTER_PARAM param, *p;

	*list = NULL;

	while (1) {
		len += tdb_unpack(buf+len, buflen-len, "p", p);
		if (!p) break;

		len += tdb_unpack(buf+len, buflen-len, "fdB",
				  param.value, 
				  &param.type, 
				  &param.data_len,
				  &param.data);
		param.next = *list;
		*list = memdup(&param, sizeof(param));
	}

	return len;
}


/****************************************************************************
get a default printer info 2 struct
****************************************************************************/
static uint32 get_a_printer_2_default(NT_PRINTER_INFO_LEVEL_2 **info_ptr, fstring sharename)
{
	extern pstring global_myname;
	int snum;
	NT_PRINTER_INFO_LEVEL_2 info;
	NT_DEVICEMODE devmode;

	ZERO_STRUCT(info);
	ZERO_STRUCT(devmode);

	init_devicemode(&devmode);
	
	snum = lp_servicenumber(sharename);

	fstrcpy(info.servername, global_myname);
	fstrcpy(info.printername, sharename);
	fstrcpy(info.portname, sharename);
	fstrcpy(info.drivername, lp_printerdriver(snum));
	fstrcpy(info.printprocessor, "winprint");
	fstrcpy(info.datatype, "RAW");

	info.devmode = (NT_DEVICEMODE *)memdup(&devmode, sizeof(devmode));

	*info_ptr = (NT_PRINTER_INFO_LEVEL_2 *)memdup(&info, sizeof(info));
	if (! *info_ptr) return 2;

	return (0);	
}

/****************************************************************************
****************************************************************************/
static uint32 get_a_printer_2(NT_PRINTER_INFO_LEVEL_2 **info_ptr, fstring sharename)
{
	pstring key;
	NT_PRINTER_INFO_LEVEL_2 info;
	int len = 0;
	TDB_DATA kbuf, dbuf;
		
	ZERO_STRUCT(info);

	slprintf(key, sizeof(key), "%s/%s",
		 PRINTERS_PREFIX, sharename);

	kbuf.dptr = key;
	kbuf.dsize = strlen(key)+1;

	dbuf = tdb_fetch(tdb, kbuf);
	if (!dbuf.dptr) return get_a_printer_2_default(info_ptr, sharename);

	len += tdb_unpack(dbuf.dptr+len, dbuf.dsize-len, "dddddddddddffffffffff",
			&info.attributes,
			&info.priority,
			&info.default_priority,
			&info.starttime,
			&info.untiltime,
			&info.status,
			&info.cjobs,
			&info.averageppm,
			&info.changeid,
			&info.c_setprinter,
			&info.setuptime,
			info.servername,
			info.printername,
			info.sharename,
			info.portname,
			info.drivername,
			info.location,
			info.sepfile,
			info.printprocessor,
			info.datatype,
			info.parameters);

	len += unpack_devicemode(&info.devmode,dbuf.dptr+len, dbuf.dsize-len);
	len += unpack_specifics(&info.specific,dbuf.dptr+len, dbuf.dsize-len);

	*info_ptr=memdup(&info, sizeof(info));
	
	return 0;	
}

/****************************************************************************
debugging function, dump at level 6 the struct in the logs
****************************************************************************/
static uint32 dump_a_printer(NT_PRINTER_INFO_LEVEL printer, uint32 level)
{
	uint32 success;
	NT_PRINTER_INFO_LEVEL_2	*info2;
	
	DEBUG(106,("Dumping printer at level [%d]\n", level));
	
	switch (level)
	{
		case 2: 
		{
			if (printer.info_2 == NULL)
				success=5;
			else
			{
				info2=printer.info_2;
			
				DEBUGADD(106,("attributes:[%d]\n", info2->attributes));
				DEBUGADD(106,("priority:[%d]\n", info2->priority));
				DEBUGADD(106,("default_priority:[%d]\n", info2->default_priority));
				DEBUGADD(106,("starttime:[%d]\n", info2->starttime));
				DEBUGADD(106,("untiltime:[%d]\n", info2->untiltime));
				DEBUGADD(106,("status:[%d]\n", info2->status));
				DEBUGADD(106,("cjobs:[%d]\n", info2->cjobs));
				DEBUGADD(106,("averageppm:[%d]\n", info2->averageppm));
				DEBUGADD(106,("changeid:[%d]\n", info2->changeid));
				DEBUGADD(106,("c_setprinter:[%d]\n", info2->c_setprinter));
				DEBUGADD(106,("setuptime:[%d]\n", info2->setuptime));

				DEBUGADD(106,("servername:[%s]\n", info2->servername));
				DEBUGADD(106,("printername:[%s]\n", info2->printername));
				DEBUGADD(106,("sharename:[%s]\n", info2->sharename));
				DEBUGADD(106,("portname:[%s]\n", info2->portname));
				DEBUGADD(106,("drivername:[%s]\n", info2->drivername));
				DEBUGADD(106,("location:[%s]\n", info2->location));
				DEBUGADD(106,("sepfile:[%s]\n", info2->sepfile));
				DEBUGADD(106,("printprocessor:[%s]\n", info2->printprocessor));
				DEBUGADD(106,("datatype:[%s]\n", info2->datatype));
				DEBUGADD(106,("parameters:[%s]\n", info2->parameters));
				success=0;
			}
			break;
		}
		default:
			DEBUGADD(1,("Level not implemented\n"));
			success=1;
			break;
	}
	
	return (success);
}

/*
 * The function below are the high level ones.
 * only those ones must be called from the spoolss code.
 * JFM.
 */


/****************************************************************************
****************************************************************************/
uint32 add_a_printer(NT_PRINTER_INFO_LEVEL printer, uint32 level)
{
	uint32 success;
	
	dump_a_printer(printer, level);	
	
	switch (level)
	{
		case 2: 
		{
			success=add_a_printer_2(printer.info_2);
			break;
		}
		default:
			success=1;
			break;
	}
	
	return (success);
}

/****************************************************************************
****************************************************************************/
uint32 get_a_printer(NT_PRINTER_INFO_LEVEL *printer, uint32 level, fstring sharename)
{
	uint32 success;
	
	DEBUG(10,("get_a_printer: [%s] level %u\n", sharename, (unsigned int)level));

	switch (level)
	{
		case 2: 
		{
			printer->info_2=NULL;
			success=get_a_printer_2(&(printer->info_2), sharename);
			break;
		}
		default:
			success=1;
			break;
	}
	
	dump_a_printer(*printer, level);

	DEBUG(10,("get_a_printer: [%s] level %u returning %u\n", sharename, (unsigned int)level, (unsigned int)success));

	return (success);
}

/****************************************************************************
****************************************************************************/
uint32 free_a_printer(NT_PRINTER_INFO_LEVEL printer, uint32 level)
{
	uint32 success;
	DEBUG(104,("freeing a printer at level [%d]\n", level));
	
	switch (level)
	{
		case 2: 
		{
			if (printer.info_2 != NULL)
			{
				free_nt_printer_info_level_2(&printer.info_2);
				success=0;
			}
			else
			{
				success=4;
			}
			break;
		}
		default:
			success=1;
			break;
	}
	return (success);
}

/****************************************************************************
****************************************************************************/
uint32 add_a_printer_driver(NT_PRINTER_DRIVER_INFO_LEVEL driver, uint32 level)
{
	uint32 success;
	DEBUG(104,("adding a printer at level [%d]\n", level));
	dump_a_printer_driver(driver, level);
	
	switch (level)
	{
		case 3: 
		{
			success=add_a_printer_driver_3(driver.info_3);
			break;
		}

		case 6: 
		{
			success=add_a_printer_driver_6(driver.info_6);
			break;
		}
		default:
			success=1;
			break;
	}
	
	return (success);
}
/****************************************************************************
****************************************************************************/
uint32 get_a_printer_driver(NT_PRINTER_DRIVER_INFO_LEVEL *driver, uint32 level, 
                            fstring printername, fstring architecture)
{
	uint32 success;
	
	switch (level)
	{
		case 3: 
		{
			success=get_a_printer_driver_3(&(driver->info_3), 
			                               printername,
						       architecture);
			break;
		}
		default:
			success=1;
			break;
	}
	
	if (success == 0) dump_a_printer_driver(*driver, level);
	return (success);
}

/****************************************************************************
****************************************************************************/
uint32 free_a_printer_driver(NT_PRINTER_DRIVER_INFO_LEVEL driver, uint32 level)
{
	uint32 success;
	NT_PRINTER_DRIVER_INFO_LEVEL_3 *info3;
	
	switch (level)
	{
		case 3: 
		{
			if (driver.info_3 != NULL)
			{
				info3=driver.info_3;
				if (info3->dependentfiles)
					free(info3->dependentfiles);
				free(info3);
				ZERO_STRUCTP(info3);
				success=0;
			}
			else
			{
				success=4;
			}
			break;
		}
		default:
			success=1;
			break;
	}
	return (success);
}

/****************************************************************************
****************************************************************************/
BOOL get_specific_param_by_index(NT_PRINTER_INFO_LEVEL printer, uint32 level, uint32 param_index,
                                 fstring value, uint8 **data, uint32 *type, uint32 *len)
{
	/* right now that's enough ! */	
	NT_PRINTER_PARAM *param;
	int i=0;
	
	param=printer.info_2->specific;
	
	while (param != NULL && i <= param_index)
	{
		param=param->next;
		i++;
	}
	
	if (param == NULL)
		return False;

	/* exited because it exist */
	*type=param->type;		
	StrnCpy(value, param->value, sizeof(fstring)-1);
	*data=(uint8 *)malloc(param->data_len*sizeof(uint8));
	if(*data == NULL)
		return False;
	memcpy(*data, param->data, param->data_len);
	*len=param->data_len;
	return True;
}

/****************************************************************************
****************************************************************************/
BOOL get_specific_param(NT_PRINTER_INFO_LEVEL printer, uint32 level, 
                        fstring value, uint8 **data, uint32 *type, uint32 *len)
{
	/* right now that's enough ! */	
	NT_PRINTER_PARAM *param;
	
	DEBUG(105, ("get_specific_param\n"));
	
	param=printer.info_2->specific;
		
	while (param != NULL)
	{
		if ( !strcmp(value, param->value) 
		    && strlen(value)==strlen(param->value))
			break;
			
		param=param->next;
	}
	
	DEBUG(106, ("found one param\n"));
	if (param != NULL)
	{
		/* exited because it exist */
		*type=param->type;	
		
		*data=(uint8 *)malloc(param->data_len*sizeof(uint8));
		if(*data == NULL)
			return False;
		memcpy(*data, param->data, param->data_len);
		*len=param->data_len;

		DEBUG(106, ("exit of get_specific_param:true\n"));
		return (True);
	}
	DEBUG(106, ("exit of get_specific_param:false\n"));
	return (False);
}

/****************************************************************************
****************************************************************************/
void init_devicemode(NT_DEVICEMODE *nt_devmode)
{
/*
 * should I init this ones ???
	nt_devmode->devicename
*/
	fstrcpy(nt_devmode->formname, "A4");

	nt_devmode->specversion      = 0x0401;
	nt_devmode->driverversion    = 0x0400;
	nt_devmode->size             = 0x00DC;
	nt_devmode->driverextra      = 0x0000;
	nt_devmode->fields           = FORMNAME | TTOPTION | PRINTQUALITY | 
				       DEFAULTSOURCE | COPIES | SCALE | 
				       PAPERSIZE | ORIENTATION;
	nt_devmode->orientation      = 1;
	nt_devmode->papersize        = PAPER_A4;
	nt_devmode->paperlength      = 0;
	nt_devmode->paperwidth       = 0;
	nt_devmode->scale            = 0x64;
	nt_devmode->copies           = 01;
	nt_devmode->defaultsource    = BIN_FORMSOURCE;
	nt_devmode->printquality     = 0x0258;
	nt_devmode->color            = COLOR_MONOCHROME;
	nt_devmode->duplex           = DUP_SIMPLEX;
	nt_devmode->yresolution      = 0;
	nt_devmode->ttoption         = TT_SUBDEV;
	nt_devmode->collate          = COLLATE_FALSE;
	nt_devmode->icmmethod        = 0;
	nt_devmode->icmintent        = 0;
	nt_devmode->mediatype        = 0;
	nt_devmode->dithertype       = 0;

	/* non utilisés par un driver d'imprimante */
	nt_devmode->logpixels        = 0;
	nt_devmode->bitsperpel       = 0;
	nt_devmode->pelswidth        = 0;
	nt_devmode->pelsheight       = 0;
	nt_devmode->displayflags     = 0;
	nt_devmode->displayfrequency = 0;
	nt_devmode->reserved1        = 0;
	nt_devmode->reserved2        = 0;
	nt_devmode->panningwidth     = 0;
	nt_devmode->panningheight    = 0;
	
	nt_devmode->private=NULL;
}


/* error code:
	0: everything OK
	1: level not implemented
	2: file doesn't exist
	3: can't allocate memory
	4: can't free memory
	5: non existant struct
*/

/*
	A printer and a printer driver are 2 different things.
	NT manages them separatelly, Samba does the same.
	Why ? Simply because it's easier and it makes sense !
	
	Now explanation: You have 3 printers behind your samba server,
	2 of them are the same make and model (laser A and B). But laser B 
	has an 3000 sheet feeder and laser A doesn't such an option.
	Your third printer is an old dot-matrix model for the accounting :-).
	
	If the /usr/local/samba/lib directory (default dir), you will have
	5 files to describe all of this.
	
	3 files for the printers (1 by printer):
		NTprinter_laser A
		NTprinter_laser B
		NTprinter_accounting
	2 files for the drivers (1 for the laser and 1 for the dot matrix)
		NTdriver_printer model X
		NTdriver_printer model Y

jfm: I should use this comment for the text file to explain 
	same thing for the forms BTW.
	Je devrais mettre mes commentaires en francais, ca serait mieux :-)

*/