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windows-nt/Source/XPSP1/NT/net/snmp/subagent/hostmib/hrprinte.c

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/*
* HrPrinterEntry.c v0.10
* Generated in conjunction with Management Factory scripts:
* script version: SNMPv1, 0.16, Apr 25, 1996
* project: D:\TEMP\EXAMPLE\HOSTMIB
****************************************************************************
* *
* (C) Copyright 1995 DIGITAL EQUIPMENT CORPORATION *
* *
* This software is an unpublished work protected under the *
* the copyright laws of the United States of America, all *
* rights reserved. *
* *
* In the event this software is licensed for use by the United *
* States Government, all use, duplication or disclosure by the *
* United States Government is subject to restrictions as set *
* forth in either subparagraph (c)(1)(ii) of the Rights in *
* Technical Data And Computer Software Clause at DFARS *
* 252.227-7013, or the Commercial Computer Software Restricted *
* Rights Clause at FAR 52.221-19, whichever is applicable. *
* *
****************************************************************************
*
* Facility:
*
* Windows NT SNMP Extension Agent
*
* Abstract:
*
* This module contains the code for dealing with the get, set, and
* instance name routines for the HrPrinterEntry. Actual instrumentation code is
* supplied by the developer.
*
* Functions:
*
* A get and set routine for each attribute in the class.
*
* The routines for instances within the class.
*
* Author:
*
* D. D. Burns @ Webenable Inc
*
* Revision History:
*
* V1.00 - 04/27/97 D. D. Burns Genned: Thu Nov 07 16:42:50 1996
*
*/
#include <windows.h>
#include <malloc.h>
#include <snmp.h>
#include "mib.h"
#include "smint.h"
#include "hostmsmi.h"
#include "user.h" /* Developer supplied include file */
#include "HMCACHE.H" /* Cache-related definitions */
#include "HRDEVENT.H" /* HrDevice Table related definitions */
#include <winspool.h> /* Needed to acquire printer-status*/
/*
* GetHrPrinterStatus
* The current status of this printer device.
*
* Gets the value for HrPrinterStatus.
*
* Arguments:
*
* outvalue address to return variable value
* accesss Reserved for future security use
* instance address of instance name as ordered native
* data type(s)
*
* Return Codes:
*
* Standard PDU error codes.
*
* SNMP_ERRORSTATUS_NOERROR Successful get
* SNMP_ERRORSTATUS_GENERR Catch-all failure code
* mibtget.c v0.10
*
| =============== From WebEnable Design Spec Rev 3 04/11/97==================
| hrPrinterStatus
|
| ACCESS SYNTAX
| read-only INTEGER {other(1),unknown(2),idle(3),printing(4),warmup(5)}
|
| "The current status of this printer device. When in the idle(1), printing(2),
| or warmup(3) state, the corresponding hrDeviceStatus should be running(2) or
| warning(3). When in the unknown state, the corresponding hrDeviceStatus
| should be unknown(1)."
|
| DISCUSSION:
|
| <POA-14> The actual status and error state of a hardware printer is deeply
| buried with respect to the application level. Given that we can acquire
| the name of the printer driver for a printer, some input on how best to
| report the hardware status and error state would be appreciated.
|
| LIMITED RESOLUTION >>>>>>>>
| <POA-14> We report logical printers as though they were hardware printers.
| This results in certain "undercount" and "overcount" situations when using
| Host MIB values for inventory purposes. For status purposes, the status
| of the logical printers is returned.
| LIMITED RESOLUTION >>>>>>>>
|
|============================================================================
| 1.3.6.1.2.1.25.3.5.1.1.<instance>
| | | | |
| | | | *hrPrinterStatus
| | | *hrPrinterEntry
| | *hrPrinterTable
| *-hrDevice
*/
UINT
GetHrPrinterStatus(
OUT INThrPrinterStatus *outvalue ,
IN Access_Credential *access ,
IN InstanceName *instance )
{
ULONG index; /* As fetched from instance structure */
CACHEROW *row; /* Row entry fetched from cache */
/*
| Grab the instance information
*/
index = GET_INSTANCE(0);
/*
| Use it to find the right entry in the cache
*/
if ((row = FindTableRow(index, &hrDevice_cache)) == NULL) {
return SNMP_ERRORSTATUS_GENERR;
}
/*
| Ok, here's the skinny: Just about all the status information that can
| be acquired about a printer under NT is acquired by
| "COMPUTE_hrPrinter_status()" that was written to service the need of
| reporting general status for printer devices out of "hrDeviceStatus".
|
| Since we can't gather any more information reliably than this function
| does, we simply call it and map the return codes it provides as values
| for "hrDeviceStatus" into codes appropriate for this attribute variable.
|
*/
if (COMPUTE_hrPrinter_status(row, (UINT *) outvalue) != TRUE) {
return SNMP_ERRORSTATUS_GENERR;
}
/* We get back:
| "unknown" = 1 If we can't open the printer at all.
|
| "running" = 2 If we can open the printer and no status is
| showing on it.
| "warning" = 3 If we can open the printer but PAUSED or
| PENDING_DELETION is showing on it.
*/
switch (*outvalue) {
case 1: // "unknown" for hrDeviceStatus
*outvalue = 2; // goes to-> "unknown" for hrPrinterStatus
break;
case 2: // "running" for hrDeviceStatus
case 3: // "warning" for hrDeviceStatus
default:
*outvalue = 1; // goes to-> "other" for hrPrinterStatus
break;
}
return SNMP_ERRORSTATUS_NOERROR ;
} /* end of GetHrPrinterStatus() */
/*
* GetHrPrinterDetectedErrorState
* The error conditions as detected by the printer.
*
* Gets the value for HrPrinterDetectedErrorState.
*
* Arguments:
*
* outvalue address to return variable value
* accesss Reserved for future security use
* instance address of instance name as ordered native
* data type(s)
*
* Return Codes:
*
* Standard PDU error codes.
*
* SNMP_ERRORSTATUS_NOERROR Successful get
* SNMP_ERRORSTATUS_GENERR Catch-all failure code
* mibtget.c v0.10
*
| =============== From WebEnable Design Spec Rev 3 04/11/97==================
| hrPrinterDetectedErrorState
|
| ACCESS SYNTAX
| read-only OCTET STRING
|
| "This object represents any error conditions detected by the printer. The
| error conditions are encoded as bits in an octet string, with the following
| definitions:
|
| Condition Bit # hrDeviceStatus
|
| lowPaper 0 warning(3)
| noPaper 1 down(5)
| lowToner 2 warning(3)
| noToner 3 down(5)
| doorOpen 4 down(5)
| jammed 5 down(5)
| offline 6 down(5)
| serviceRequested 7 warning(3)
|
| If multiple conditions are currently detected and the hrDeviceStatus would not
| otherwise be unknown(1) or testing(4), the hrDeviceStatus shall correspond to
| the worst state of those indicated, where down(5) is worse than warning(3)
| which is worse than running(2).
|
| Bits are numbered starting with the most significant bit of the first byte
| being bit 0, the least significant bit of the first byte being bit 7, the most
| significant bit of the second byte being bit 8, and so on. A one bit encodes
| that the condition was detected, while a zero bit encodes that the condition
| was not detected.
|
| This object is useful for alerting an operator to specific warning or error
| conditions that may occur, especially those requiring human intervention."
|
| DISCUSSION:
|
| (See discussion above for "hrPrinterStatus").
|
|============================================================================
| 1.3.6.1.2.1.25.3.5.1.2.<instance>
| | | | |
| | | | *hrPrinterDetectedErrorState
| | | *hrPrinterEntry
| | *hrPrinterTable
| *-hrDevice
*/
UINT
GetHrPrinterDetectedErrorState(
OUT OctetString *outvalue ,
IN Access_Credential *access ,
IN InstanceName *instance )
{
/*
| The deal on this attribute is that under NT, you can barely tell
| if the printer is on, unlike 95, where you can tell if it is on its
| second bottle of toner for the day.
|
| Consequently we return a single all-bits zero octet regardless of
| the instance value (which by now in the calling sequence of things
| has been validated anyway).
*/
outvalue->length = 1;
outvalue->string = "\0";
return SNMP_ERRORSTATUS_NOERROR ;
} /* end of GetHrPrinterDetectedErrorState() */
/*
* HrPrinterEntryFindInstance
*
* This routine is used to verify that the specified instance is
* valid.
*
* Arguments:
*
* FullOid Address for the full oid - group, variable,
* and instance information
* instance Address for instance specification as an oid
*
* Return Codes:
*
* SNMP_ERRORSTATUS_NOERROR Instance found and valid
* SNMP_ERRORSTATUS_NOSUCHNAME Invalid instance
*
*/
UINT
HrPrinterEntryFindInstance( IN ObjectIdentifier *FullOid ,
IN OUT ObjectIdentifier *instance )
{
UINT tmp_instance; /* Instance arc value */
CACHEROW *row; /* Row entry fetched from cache */
//
// Developer instrumentation code to find appropriate instance goes here.
// For non-tables, it is not necessary to modify this routine. However, if
// there is any context that needs to be set, it can be done here.
//
if ( FullOid->idLength <= HRPRINTERENTRY_VAR_INDEX )
// No instance was specified
return SNMP_ERRORSTATUS_NOSUCHNAME ;
else if ( FullOid->idLength != HRPRINTERENTRY_VAR_INDEX + 1 )
// Instance length is more than 1
return SNMP_ERRORSTATUS_NOSUCHNAME ;
else
// The only valid instance for a non-table are instance 0. If this
// is a non-table, the following code validates the instances. If this
// is a table, developer modification is necessary below.
tmp_instance = FullOid->ids[ HRPRINTERENTRY_VAR_INDEX ] ;
/*
| For hrPrinterTable, the instance arc(s) is a single arc, and it must
| correctly select an entry in the hrDeviceTable cache.
|
| Check that here.
*/
if ( (row = FindTableRow(tmp_instance, &hrDevice_cache)) == NULL ) {
return SNMP_ERRORSTATUS_NOSUCHNAME ;
}
else
{
/*
| The instance arc selects an hrDeviceTable row entry, but is that
| entry actually for a device of type "Printer"?
|
| (We examine the last arc of the OID that specifies the device
| type in the row entry selected by the instance arc).
*/
if (row->attrib_list[HRDV_TYPE].u.unumber_value !=
HRDV_TYPE_LASTARC_PRINTER) {
return SNMP_ERRORSTATUS_NOSUCHNAME;
}
// the instance is valid. Create the instance portion of the OID
// to be returned from this call.
instance->ids[ 0 ] = tmp_instance ;
instance->idLength = 1 ;
}
return SNMP_ERRORSTATUS_NOERROR ;
} /* end of HrPrinterEntryFindInstance() */
/*
* HrPrinterEntryFindNextInstance
*
* This routine is called to get the next instance. If no instance
* was passed than return the first instance (1).
*
* Arguments:
*
* FullOid Address for the full oid - group, variable,
* and instance information
* instance Address for instance specification as an oid
*
* Return Codes:
*
* SNMP_ERRORSTATUS_NOERROR Instance found and valid
* SNMP_ERRORSTATUS_NOSUCHNAME Invalid instance
*
*/
UINT
HrPrinterEntryFindNextInstance( IN ObjectIdentifier *FullOid ,
IN OUT ObjectIdentifier *instance )
{
//
// Developer supplied code to find the next instance of class goes here.
// If this is a class with cardinality 1, no modification of this routine
// is necessary unless additional context needs to be set.
// If the FullOid does not specify an instance, then the only instance
// of the class is returned. If this is a table, the first row of the
// table is returned.
//
// If an instance is specified and this is a non-table class, then NOSUCHNAME
// is returned so that correct MIB rollover processing occurs. If this is
// a table, then the next instance is the one following the current instance.
// If there are no more instances in the table, return NOSUCHNAME.
//
CACHEROW *row;
ULONG tmp_instance;
if ( FullOid->idLength <= HRPRINTERENTRY_VAR_INDEX )
{
/*
| Too short: must return the instance arc that selects the first
| entry in the table if there is one.
*/
tmp_instance = 0;
}
else {
/*
| There is at least one instance arc. Even if it is the only arc
| we use it as the "index" in a request for the "NEXT" one.
*/
tmp_instance = FullOid->ids[ HRPRINTERENTRY_VAR_INDEX ] ;
}
/* Now go off and try to find the next instance in the table */
if ((row = FindNextTableRow(tmp_instance, &hrDevice_cache)) == NULL) {
return SNMP_ERRORSTATUS_NOSUCHNAME ;
}
/*
| The instance arc selects an hrDeviceTable row entry, but is that
| entry actually for a device of type "Printer"?
|
| (We examine the last arc of the OID that specifies the device
| type in the row entry selected by the instance arc).
*/
do {
if (row->attrib_list[HRDV_TYPE].u.unumber_value ==
HRDV_TYPE_LASTARC_PRINTER) {
/* Found an hrDeviceTable entry for the right device type */
break;
}
/* Step to the next row in the table */
row = GetNextTableRow( row );
}
while ( row != NULL );
/* If we found a proper device-type row . . . */
if ( row != NULL) {
instance->ids[ 0 ] = row->index ;
instance->idLength = 1 ;
}
else {
/*
| Fell off the end of the hrDeviceTable without finding a row
| entry that had the right device type.
*/
return SNMP_ERRORSTATUS_NOSUCHNAME ;
}
return SNMP_ERRORSTATUS_NOERROR ;
} /* end of HrPrinterEntryFindNextInstance() */
/*
* HrPrinterEntryConvertInstance
*
* This routine is used to convert the object id specification of an
* instance into an ordered native representation. The object id format
* is that object identifier that is returned from the Find Instance
* or Find Next Instance routines. It is NOT the full object identifier
* that contains the group and variable object ids as well. The native
* representation is an argc/argv-like structure that contains the
* ordered variables that define the instance. This is specified by
* the MIB's INDEX clause. See RFC 1212 for information about the INDEX
* clause.
*
*
* Arguments:
*
* oid_spec Address of the object id instance specification
* native_spec Address to return the ordered native instance
* specification
*
* Return Codes:
*
* SUCCESS Conversion complete successfully
* FAILURE Unable to convert object id into native format
*
*/
UINT
HrPrinterEntryConvertInstance( IN ObjectIdentifier *oid_spec ,
IN OUT InstanceName *native_spec )
{
static char *array; /* The address of this (char *) is passed back */
/* as though it were an array of length 1 of these */
/* types. */
static ULONG inst; /* The address of this ULONG is passed back */
/* (Obviously, no "free()" action is needed) */
/* We only expect the one arc in "oid_spec" */
inst = oid_spec->ids[0];
array = (char *) &inst;
native_spec->count = 1;
native_spec->array = &array;
return SUCCESS ;
} /* end of HrPrinterEntryConvertInstance() */
/*
* HrPrinterEntryFreeInstance
*
* This routine is used to free an ordered native representation of an
* instance name.
*
* Arguments:
*
* instance Address to return the ordered native instance
* specification
*
* Return Codes:
*
*
*/
void
HrPrinterEntryFreeInstance( IN OUT InstanceName *instance )
{
/* No action needed for hrPrinter Table */
} /* end of HrPrinterEntryFreeInstance() */
/*
| End of Generated Code
*/
/* Gen_HrPrinter_Cache - Generate a initial cache for HrDevice PRINTER Table */
/* Gen_HrPrinter_Cache - Generate a initial cache for HrDevice PRINTER Table */
/* Gen_HrPrinter_Cache - Generate a initial cache for HrDevice PRINTER Table */
BOOL
Gen_HrPrinter_Cache(
ULONG type_arc
)
/*
| EXPLICIT INPUTS:
|
| "type_arc" is the number "n" to be used as the last arc in the
| device-type OID:
|
| 1.3.6.1.2.1.25.3.1.n
| | | |
| | | * Identifying arc for type
| | *-hrDeviceTypes (OIDs specifying device types)
| *-hrDevice
|
| for devices created by this cache-population routine.
|
| IMPLICIT INPUTS:
|
| None.
|
| OUTPUTS:
|
| On Success:
| Function returns TRUE indicating that the HrDevice cache has been fully
| populated with all rows required for Printer devices.
|
| On any Failure:
| Function returns FALSE (indicating "not enough storage" or other
| internal logic error).
|
| THE BIG PICTURE:
|
| At subagent startup time, the cache for each table in the MIB is
| populated with rows for each row in the table. This function is
| invoked by the start-up code in "Gen_HrDevice_Cache()" to
| populate the cache for the HrDevice table with printer-specific
| entries.
|
| OTHER THINGS TO KNOW:
|
| Since all the attributes in the HrPrinter "sub" table are computed
| upon request (based on cached information in a selected row in the
| HrDevice table) there is no need to build a cache specifically for
| this sub-table. (This routine is loading the HrDevice cache despite
| it's name). --------
|
| This function holds a convention with the GET routines earlier in
| this module that the "HIDDEN_CTX" attribute for printers contains
| a string that can be used in OpenPrinter to get a handle to that
| printer.
|============================================================================
| 1.3.6.1.2.1.25.3.5.1...
| | | |
| | | *hrPrinterEntry
| | *hrPrinterTable
| *-hrDevice
|
*/
{
CHAR temp[8]; /* Temporary buffer for first call */
DWORD PI_request_len; /* Printer Info: Storage actually needed */
DWORD PI_current_len; /* Printer Info: Storage used on 2nd call */
DWORD PI_count; /* Count of Printer Infos returned */
UINT i; /* Handy-Dandy loop index */
PRINTER_INFO_4
*PrinterInfo; /* --> allocated storage for drive strings */
/*
| We're going to call EnumPrinters() twice, once to get the proper
| buffer size, and the second time to actually get the printer info.
*/
EnumPrinters(PRINTER_ENUM_LOCAL, // Flags
NULL, // Name (ignored)
4, // Level
temp, // Buffer
1, // "Too Small" Buffer size
&PI_request_len, // Required length... comes back.
&PI_count
);
/*
| Grab enough storage for the enumeration structures
*/
if ( (PrinterInfo = malloc(PI_request_len)) == NULL) {
/* Storage Request failed altogether, can't initialize */
return ( FALSE );
}
/* Now get the real stuff */
if (!EnumPrinters(PRINTER_ENUM_LOCAL, // Flags
NULL, // Name (ignored)
4, // Level
(unsigned char *) PrinterInfo, // Buffer to receive enumeration
PI_request_len, // Actual buffer size
&PI_request_len, // Required length... comes back.
&PI_count
)) {
/* Failed for some reason */
free( PrinterInfo );
return ( FALSE );
}
/*
| Now swing down the list, and for every LOCAL printer,
|
| + Fetch the description
| + Make an hrDevice table row entry with the printer name & description
*/
for (i = 0; i < PI_count; i += 1) {
/* If it is a Local printer ... */
if (PrinterInfo[i].Attributes & PRINTER_ATTRIBUTE_LOCAL) {
HANDLE hprinter; /* Handle to a printer */
/* Open it to get a handle */
if (OpenPrinter(PrinterInfo[i].pPrinterName, // Printer Name
&hprinter, // Receive handle here
NULL // Security
) == TRUE ) {
PRINTER_INFO_2 *p2;
DWORD P2_request_len; /* Bytes-needed by GetPrinter */
/*
| Printer is Open, get a PRINTER_INFO_2 "slug-o-data"
|
| 1st call: Fails, but gets buffer size needed.
*/
GetPrinter(hprinter, // printer handle
2, // Level 2
temp, // Buffer for INFO_2
1, // Buffer-too-small
&P2_request_len // What we really need
);
/*
| Grab enough storage for the PRINTER_INFO_2 structure
*/
if ( (p2 = malloc(P2_request_len)) == NULL) {
/* Storage Request failed altogether, can't initialize */
free( PrinterInfo );
ClosePrinter( hprinter );
return ( FALSE );
}
/*
| 2nd call: Should succeed.
*/
if (GetPrinter(hprinter, // printer handle
2, // Level 2
(unsigned char *) p2, // Buffer for INFO_2
P2_request_len, // Buffer-just-right
&P2_request_len // What we really need
) == TRUE) {
/* Add a row to HrDevice Table
|
| We're using the printer-driver name as a "Poor Man's"
| description: the driver "names" are quite descriptive with
| version numbers yet!.
|
| The Hidden Context is the name needed to open the printer
| to gain information about its status.
*/
if (AddHrDeviceRow(type_arc, // DeviceType OID Last-Arc
p2->pDriverName, // Used as description
PrinterInfo[i].pPrinterName, // Hidden Ctx
CA_STRING // Hidden Ctx type
) == NULL ) {
/* Failure at a lower level: drop everything */
free( p2 );
free( PrinterInfo );
ClosePrinter( hprinter );
return ( FALSE );
}
}
/* Close up shop on this printer*/
free( p2 );
ClosePrinter( hprinter );
}
}
}
free( PrinterInfo );
return ( TRUE );
}
/* COMPUTE_hrPrinter_errors - Compute "hrDeviceErrors" for a Printer device */
/* COMPUTE_hrPrinter_errors - Compute "hrDeviceErrors" for a Printer device */
/* COMPUTE_hrPrinter_errors - Compute "hrDeviceErrors" for a Printer device */
BOOL
COMPUTE_hrPrinter_errors(
CACHEROW *row,
UINT *outvalue
)
/*
| EXPLICIT INPUTS:
|
| "row" points to the hrDevice cache row for the printer whose error
| count is to be returned.
|
| Attribute "HIDDEN_CTX" has a string value that is the name of the
| printer by convention with "Gen_HrPrinter_Cache()" above.
|
| "outvalue" is a pointer to an integer to receive the error count.
|
| IMPLICIT INPUTS:
|
| None.
|
| OUTPUTS:
|
| On Success:
| Function returns TRUE and an error count for the specified printer.
|
| On any Failure:
| Function returns FALSE.
|
| THE BIG PICTURE:
|
| For an hrDevice attribute whose value is "computed", at the time of
| the request to see it is received, we dispatch to a "COMPUTE_" function
| to get the value. This is such a routine for printers.
|
| OTHER THINGS TO KNOW:
|
| This function holds a convention with the Gen_cache routines earlier in
| this module that the "HIDDEN_CTX" attribute for printers contains
| a string that can be used in OpenPrinter to get a handle to that
| printer.
*/
{
/*
| No way to get any error counts under NT
*/
*outvalue = 0;
return ( TRUE );
}
/* COMPUTE_hrPrinter_status - Compute "hrDeviceStatus" for a Printer device */
/* COMPUTE_hrPrinter_status - Compute "hrDeviceStatus" for a Printer device */
/* COMPUTE_hrPrinter_status - Compute "hrDeviceStatus" for a Printer device */
BOOL
COMPUTE_hrPrinter_status(
CACHEROW *row,
UINT *outvalue
)
/*
| EXPLICIT INPUTS:
|
| "row" points to the hrDevice cache row for the printer whose status
| is to be returned.
|
| Attribute "HIDDEN_CTX" has a string value that is the name of the
| printer by convention with "Gen_HrPrinter_Cache()" above.
|
| "outvalue" is a pointer to an integer to receive the status.
|
| IMPLICIT INPUTS:
|
| None.
|
| OUTPUTS:
|
| On Success:
| Function returns TRUE and a status for the specified printer:
|
| "unknown" = 1 If we can't open the printer at all.
|
| "running" = 2 If we can open the printer and no status is
| showing on it.
| "warning" = 3 If we can open the printer but PAUSED or
| PENDING_DELETION is showing on it.
|
|
| On any Failure:
| Function returns FALSE.
|
| THE BIG PICTURE:
|
| For an hrDevice attribute whose value is "computed", at the time of
| the request to see it is received, we dispatch to a "COMPUTE_" function
| to get the value. This is such a routine for printers.
|
| OTHER THINGS TO KNOW:
|
| This function holds a convention with the Gen_cache routines earlier in
| this module that the "HIDDEN_CTX" attribute for printers contains
| a string that can be used in OpenPrinter to get a handle to that
| printer.
*/
{
CHAR temp[8]; /* Temporary buffer for first call */
HANDLE hprinter; /* Handle to a printer */
/* Open Printer whose name is in "Hidden Context" to get a handle */
if (OpenPrinter(row->attrib_list[HIDDEN_CTX].u.string_value, // Printer Name
&hprinter, // Receive handle here
NULL // Security
) == TRUE ) {
PRINTER_INFO_2 *p2;
DWORD P2_request_len; /* Bytes-needed by GetPrinter */
/*
| Printer is Open, get a PRINTER_INFO_2 "slug-o-data"
|
| 1st call: Fails, get buffer size needed.
*/
GetPrinter(hprinter, // printer handle
2, // Level 2
temp, // Buffer for INFO_2
1, // Buffer-too-small
&P2_request_len // What we really need
);
/*
| Grab enough storage for the PRINTER_INFO_2 structure
*/
if ( (p2 = malloc(P2_request_len)) == NULL) {
/* Storage Request failed altogether */
ClosePrinter( hprinter );
return ( FALSE );
}
/*
| 2nd call: Should succeed.
*/
if (GetPrinter(hprinter, // printer handle
2, // Level 2
(unsigned char *) p2, // Buffer for INFO_2
P2_request_len, // Buffer-just-right
&P2_request_len // What we really need
) == TRUE) {
/*
| As of this writing, only two status values are available
| under NT:
|
| PRINTER_STATUS_PAUSED
| PRINTER_STATUS_PENDING_DELETION
|
| Basically, if either of these is TRUE, we'll signal "warning".
| If neither are TRUE, we'll signal "running" (on the basis that
| we've managed to open the printer OK and it shows no status).
*/
if ( (p2->Status & PRINTER_STATUS_PAUSED)
|| (p2->Status & PRINTER_STATUS_PENDING_DELETION)) {
*outvalue = 3; // "warning"
}
else {
*outvalue = 2; // "running"
}
}
/* Free up and return */
ClosePrinter( hprinter );
free( p2 );
}
else {
*outvalue = 1; // "unknown"
}
return ( TRUE );
}
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