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+---
+-- This module is designed to parse the <code>PERF_DATA_BLOCK</code> structure, which is
+-- stored in the registry under HKEY_PERFORMANCE_DATA. By querying this structure, you can
+-- get a whole lot of information about what's going on.
+--
+-- To use this from a script, see <code>get_performance_data</code>, it is the only
+-- "public" function in this module.
+--
+-- My primary sources of information were:
+-- * This 1996 journal by Matt Pietrek: <http://www.microsoft.com/msj/archive/S271.aspx>
+-- * The followup article: <http://www.microsoft.com/msj/archive/S2A9.aspx>
+-- * The WinPerf.h header file
+--
+-- And my primary inspiration was PsTools, specifically, <code>pstasklist.exe</code>.
+--
+--@author Ron Bowes <ron@skullsecurity.net>
+--@copyright Same as Nmap--See https://nmap.org/book/man-legal.html
+-----------------------------------------------------------------------
+
+local msrpc = require "msrpc"
+local msrpctypes = require "msrpctypes"
+local stdnse = require "stdnse"
+local string = require "string"
+_ENV = stdnse.module("msrpcperformance", stdnse.seeall)
+
+---Parses the title database, which is a series of null-terminated string pairs.
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_title_database(data, pos)
+ local result = {}
+ local i = 1
+
+ repeat
+ local number, name
+ number, name, pos = string.unpack("<zz", data, pos)
+
+ if(number == nil) then
+ return false, "Couldn't parse the title database: end of string encountered early"
+ elseif(tonumber(number) == nil) then -- Not sure if this actually happens, but it doesn't hurt to check
+ stdnse.debug1("MSRPC: ERROR: Couldn't parse the title database: string found where number expected (%d: '%s')", i, number)
+ return false, "Couldn't parse the title database"
+ end
+
+ result[tonumber(number)] = name
+ i = i + 1
+ until pos >= #data
+
+ return true, pos, result
+end
+
+---Parses a PERF_DATA_BLOCK, which has the following definition (from "WinPerf.h" on Visual Studio 8):
+--
+--<code>
+-- typedef struct _PERF_DATA_BLOCK {
+-- WCHAR Signature[4]; // Signature: Unicode "PERF"
+-- DWORD LittleEndian; // 0 = Big Endian, 1 = Little Endian
+-- DWORD Version; // Version of these data structures
+-- // starting at 1
+-- DWORD Revision; // Revision of these data structures
+-- // starting at 0 for each Version
+-- DWORD TotalByteLength; // Total length of data block
+-- DWORD HeaderLength; // Length of this structure
+-- DWORD NumObjectTypes; // Number of types of objects
+-- // being reported
+-- LONG DefaultObject; // Object Title Index of default
+-- // object to display when data from
+-- // this system is retrieved (-1 =
+-- // none, but this is not expected to
+-- // be used)
+-- SYSTEMTIME SystemTime; // Time at the system under
+-- // measurement
+-- LARGE_INTEGER PerfTime; // Performance counter value
+-- // at the system under measurement
+-- LARGE_INTEGER PerfFreq; // Performance counter frequency
+-- // at the system under measurement
+-- LARGE_INTEGER PerfTime100nSec; // Performance counter time in 100 nsec
+-- // units at the system under measurement
+-- DWORD SystemNameLength; // Length of the system name
+-- DWORD SystemNameOffset; // Offset, from beginning of this
+-- // structure, to name of system
+-- // being measured
+-- } PERF_DATA_BLOCK, *PPERF_DATA_BLOCK;
+--</code>
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_data_block(data, pos)
+ local result = {}
+
+ pos, result['Signature'] = msrpctypes.unicode_to_string(data, pos, 4, false)
+ if(result['Signature'] ~= "PERF") then
+ return false, "MSRPC: PERF_DATA_BLOCK signature is missing or incorrect"
+ end
+
+ pos, result['LittleEndian'] = msrpctypes.unmarshall_int32(data, pos)
+ if(result['LittleEndian'] ~= 1) then
+ return false, "MSRPC: PERF_DATA_BLOCK returned a non-understood endianness"
+ end
+
+ -- Parse the header
+ pos, result['Version'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['Revision'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['TotalByteLength'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['HeaderLength'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['NumObjectTypes'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['DefaultObject'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['SystemTime'] = msrpctypes.unmarshall_SYSTEMTIME(data, pos)
+ pos, result['PerfTime'] = msrpctypes.unmarshall_int64(data, pos)
+ pos, result['PerfFreq'] = msrpctypes.unmarshall_int64(data, pos)
+ pos, result['PerfTime100nSec'] = msrpctypes.unmarshall_int64(data, pos)
+ pos = pos + 4 -- This value doesn't seem to line up, so add 4
+
+ pos, result['SystemNameLength'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['SystemNameOffset'] = msrpctypes.unmarshall_int32(data, pos)
+
+ -- Ensure that the system name is directly after the header. This technically shouldn't matter, but Microsoft's documentation
+ -- (in WinPref.h) says that the actual object comes "after the PERF_DATA_BLOCK", so it doesn't make sense that the SystemName
+ -- could be anywhere else.
+ if(pos ~= result['SystemNameOffset'] + 1) then
+ return false, "MSRPC: PERF_DATA_BLOCK has SystemName in the wrong location"
+ end
+
+ -- Read the system name from the next location (which happens to be identical to SystemNameOffset, on a proper system)
+ pos, result['SystemName'] = msrpctypes.unicode_to_string(data, pos, result['SystemNameLength'] / 2, true)
+
+ pos = pos + 4 -- Again, we end up not lined up so here we fix it
+
+ return true, pos, result
+end
+
+
+---Parse a PERF_OBJECT_TYPE structure. From Microsoft's documentation:
+--
+--<code>
+-- //
+-- // The _PERF_DATA_BLOCK structure is followed by NumObjectTypes of
+-- // data sections, one for each type of object measured. Each object
+-- // type section begins with a _PERF_OBJECT_TYPE structure.
+-- //
+-- typedef struct _PERF_OBJECT_TYPE {
+-- DWORD TotalByteLength; // Length of this object definition
+-- // including this structure, the
+-- // counter definitions, and the
+-- // instance definitions and the
+-- // counter blocks for each instance:
+-- // This is the offset from this
+-- // structure to the next object, if
+-- // any
+-- DWORD DefinitionLength; // Length of object definition,
+-- // which includes this structure
+-- // and the counter definition
+-- // structures for this object: this
+-- // is the offset of the first
+-- // instance or of the counters
+-- // for this object if there is
+-- // no instance
+-- DWORD HeaderLength; // Length of this structure: this
+-- // is the offset to the first
+-- // counter definition for this
+-- // object
+-- DWORD ObjectNameTitleIndex;
+-- // Index to name in Title Database
+-- #ifdef _WIN64
+-- DWORD ObjectNameTitle; // Should use this as an offset
+-- #else
+-- LPWSTR ObjectNameTitle; // Initially NULL, for use by
+-- // analysis program to point to
+-- // retrieved title string
+-- #endif
+-- DWORD ObjectHelpTitleIndex;
+-- // Index to Help in Title Database
+-- #ifdef _WIN64
+-- DWORD ObjectHelpTitle; // Should use this as an offset
+-- #else
+-- LPWSTR ObjectHelpTitle; // Initially NULL, for use by
+-- // analysis program to point to
+-- // retrieved title string
+-- #endif
+-- DWORD DetailLevel; // Object level of detail (for
+-- // controlling display complexity);
+-- // will be min of detail levels
+-- // for all this object's counters
+-- DWORD NumCounters; // Number of counters in each
+-- // counter block (one counter
+-- // block per instance)
+-- LONG DefaultCounter; // Default counter to display when
+-- // this object is selected, index
+-- // starting at 0 (-1 = none, but
+-- // this is not expected to be used)
+-- LONG NumInstances; // Number of object instances
+-- // for which counters are being
+-- // returned from the system under
+-- // measurement. If the object defined
+-- // will never have any instance data
+-- // structures (PERF_INSTANCE_DEFINITION)
+-- // then this value should be -1, if the
+-- // object can have 0 or more instances,
+-- // but has none present, then this
+-- // should be 0, otherwise this field
+-- // contains the number of instances of
+-- // this counter.
+-- DWORD CodePage; // 0 if instance strings are in
+-- // UNICODE, else the Code Page of
+-- // the instance names
+-- LARGE_INTEGER PerfTime; // Sample Time in "Object" units
+-- //
+-- LARGE_INTEGER PerfFreq; // Frequency of "Object" units in
+-- // counts per second.
+-- } PERF_OBJECT_TYPE, *PPERF_OBJECT_TYPE;
+--</code>
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_object_type(data, pos)
+ local result = {}
+
+ pos, result['TotalByteLength'] = msrpctypes.unmarshall_int32(data, pos) -- Offset to the next object
+ pos, result['DefinitionLength'] = msrpctypes.unmarshall_int32(data, pos) -- Offset to the first instance (or counter, if no instances)
+ pos, result['HeaderLength'] = msrpctypes.unmarshall_int32(data, pos) -- Offset to the first counter definition
+ pos, result['ObjectNameTitleIndex'] = msrpctypes.unmarshall_int32(data, pos) -- Index in the Title Database
+ pos, result['ObjectNameTitle'] = msrpctypes.unmarshall_int32(data, pos) -- TODO: will this work with 64-bit?
+ pos, result['ObjectHelpTitleIndex'] = msrpctypes.unmarshall_int32(data, pos) -- Index in the Help Database
+ pos, result['ObjectHelpTitle'] = msrpctypes.unmarshall_int32(data, pos) -- TODO: will this workw ith 64-bit?
+ pos, result['DetailLevel'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['NumCounters'] = msrpctypes.unmarshall_int32(data, pos) -- The number of counters in each counter block
+ pos, result['DefaultCounter'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['NumInstances'] = msrpctypes.unmarshall_int32(data, pos) -- Numer of object instances for which counters are being returned
+ pos, result['CodePage'] = msrpctypes.unmarshall_int32(data, pos) -- 0 if strings are in UNICODE, otherwise the Code Page
+ -- if(result['CodePage'] ~= 0) then
+ -- return false, string.format("Unknown Code Page for data: %d\n", result['CodePage'])
+ -- end
+ pos, result['PerfTime'] = msrpctypes.unmarshall_int64(data, pos) -- Sample time in "Object" units
+ pos, result['PerfFreq'] = msrpctypes.unmarshall_int64(data, pos) -- Frequency of "Object" units in counts/second
+
+ return true, pos, result
+end
+
+
+---Parse a PERF_COUNTER_DEFINITION structure. From Microsoft's documentation:
+--
+--<code>
+-- // There is one of the following for each of the
+-- // PERF_OBJECT_TYPE.NumCounters. The Unicode names in this structure MUST
+-- // come from a message file.
+-- typedef struct _PERF_COUNTER_DEFINITION {
+-- DWORD ByteLength; // Length in bytes of this structure
+-- DWORD CounterNameTitleIndex;
+-- // Index of Counter name into
+-- // Title Database
+-- #ifdef _WIN64
+-- DWORD CounterNameTitle;
+-- #else
+-- LPWSTR CounterNameTitle; // Initially NULL, for use by
+-- // analysis program to point to
+-- // retrieved title string
+-- #endif
+-- DWORD CounterHelpTitleIndex;
+-- // Index of Counter Help into
+-- // Title Database
+-- #ifdef _WIN64
+-- DWORD CounterHelpTitle;
+-- #else
+-- LPWSTR CounterHelpTitle; // Initially NULL, for use by
+-- // analysis program to point to
+-- // retrieved title string
+-- #endif
+-- LONG DefaultScale; // Power of 10 by which to scale
+-- // chart line if vertical axis is 100
+-- // 0 ==> 1, 1 ==> 10, -1 ==>1/10, etc.
+-- DWORD DetailLevel; // Counter level of detail (for
+-- // controlling display complexity)
+-- DWORD CounterType; // Type of counter
+-- DWORD CounterSize; // Size of counter in bytes
+-- DWORD CounterOffset; // Offset from the start of the
+-- // PERF_COUNTER_BLOCK to the first
+-- // byte of this counter
+-- } PERF_COUNTER_DEFINITION, *PPERF_COUNTER_DEFINITION;
+--</code>
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_counter_definition(data, pos)
+ local result = {}
+ local initial_pos = pos
+
+ pos, result['ByteLength'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterNameTitleIndex'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterNameTitle'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterHelpTitleIndex'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterHelpTitle'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['DefaultScale'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['DetailLevel'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterType'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterSize'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['CounterOffset'] = msrpctypes.unmarshall_int32(data, pos)
+
+ pos = initial_pos + result['ByteLength']
+
+ return true, pos, result
+end
+
+---Parse the actual counter value. This is a fairly simple function, it takes a counter
+-- definition and pulls out data based on it.
+--
+-- Note: I don't think this is doing the 8-byte values right, I suspect that they're supposed
+-- to be doubles.
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@param counter_definition The matching counter_definition.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_counter(data, pos, counter_definition)
+ local result
+
+ if(counter_definition['CounterSize'] == 4) then
+ pos, result = msrpctypes.unmarshall_int32(data, pos)
+ elseif(counter_definition['CounterSize'] == 8) then
+ pos, result = msrpctypes.unmarshall_int64(data, pos)
+ else
+ pos, result = msrpctypes.unmarshall_raw(data, pos, counter_definition['CounterSize'])
+ end
+
+ return true, pos, result
+end
+
+---Parse a PERF_INSTANCE_DEFINITION structure. From Microsoft's documentation:
+--
+--<code>
+-- // If (PERF_DATA_BLOCK.NumInstances >= 0) then there will be
+-- // PERF_DATA_BLOCK.NumInstances of a (PERF_INSTANCE_DEFINITION
+-- // followed by a PERF_COUNTER_BLOCK followed by the counter data fields)
+-- // for each instance.
+-- //
+-- // If (PERF_DATA_BLOCK.NumInstances < 0) then the counter definition
+-- // structure above will be followed by only a PERF_COUNTER_BLOCK and the
+-- // counter data for that COUNTER.
+-- typedef struct _PERF_INSTANCE_DEFINITION {
+-- DWORD ByteLength; // Length in bytes of this structure,
+-- // including the subsequent name
+-- DWORD ParentObjectTitleIndex;
+-- // Title Index to name of "parent"
+-- // object (e.g., if thread, then
+-- // process is parent object type);
+-- // if logical drive, the physical
+-- // drive is parent object type
+-- DWORD ParentObjectInstance;
+-- // Index to instance of parent object
+-- // type which is the parent of this
+-- // instance.
+-- LONG UniqueID; // A unique ID used instead of
+-- // matching the name to identify
+-- // this instance, -1 = none
+-- DWORD NameOffset; // Offset from beginning of
+-- // this struct to the Unicode name
+-- // of this instance
+-- DWORD NameLength; // Length in bytes of name; 0 = none
+-- // this length includes the characters
+-- // in the string plus the size of the
+-- // terminating NULL char. It does not
+-- // include any additional pad bytes to
+-- // correct structure alignment
+-- } PERF_INSTANCE_DEFINITION, *PPERF_INSTANCE_DEFINITION;
+--</code>
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_instance_definition(data, pos)
+ local result = {}
+
+ -- Remember where we started. I noticed that where the counter part starts can move around, so we have to
+ -- determine it by adding ByteLength to the initial position
+ local initial_pos = pos
+
+ pos, result['ByteLength'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['ParentObjectTitleIndex'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['ParentObjectInstance'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['UniqueID'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['NameOffset'] = msrpctypes.unmarshall_int32(data, pos)
+ pos, result['NameLength'] = msrpctypes.unmarshall_int32(data, pos)
+
+ pos, result['InstanceName'] = msrpctypes.unicode_to_string(data, pos, result['NameLength'] / 2, true)
+
+ pos = initial_pos + result['ByteLength']
+
+ return true, pos, result
+end
+
+---Parse a PERF_COUNTER_BLOCK structure. From Microsoft's documentation:
+--
+--<code>
+-- typedef struct _PERF_COUNTER_BLOCK {
+-- DWORD ByteLength; // Length in bytes of this structure,
+-- // including the following counters
+-- } PERF_COUNTER_BLOCK, *PPERF_COUNTER_BLOCK;
+--
+--</code>
+--
+--@param data The data being processed.
+--@param pos The position within <code>data</code>.
+--@return (status, pos, result) The status (true if successful), the new position in <code>data</code> (or an error
+-- message), and a table representing the datatype, if any.
+local function parse_perf_counter_block(data, pos)
+ local result = {}
+
+ pos, result['ByteLength'] = msrpctypes.unmarshall_int32(data, pos)
+
+ return true, pos, result
+end
+
+---Retrieve the parsed performance data from the given host for the requested
+-- object values.
+--
+-- To get a list of possible object values, leave 'objects' blank and look at
+-- <code>result['title_database']</code> -- it'll contain a list of indexes
+-- that can be looked up. These indexes are passed as a string or as a series
+-- of space-separated strings (eg, "230" for "Process" and "238" for "Process"
+-- and "Processor").
+--
+--@param host The host object
+--@param objects [optional] The space-separated list of object numbers to
+-- retrieve. Default: only retrieve the database.
+function get_performance_data(host, objects)
+
+ -- Create the SMB session
+ local status, smbstate = msrpc.start_smb(host, msrpc.WINREG_PATH)
+ if(status == false) then
+ return false, smbstate
+ end
+
+ -- Bind to WINREG service
+ local status, bind_result = msrpc.bind(smbstate, msrpc.WINREG_UUID, msrpc.WINREG_VERSION, nil)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, bind_result
+ end
+
+ -- Open HKEY_PERFORMANCE_DATA
+ local status, openhkpd_result = msrpc.winreg_openhkpd(smbstate)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, openhkpd_result
+ end
+
+ local status, queryvalue_result = msrpc.winreg_queryvalue(smbstate, openhkpd_result['handle'], "Counter 009")
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, queryvalue_result
+ end
+
+ -- Parse the title database
+ local pos = 1
+ local status
+ local result = {}
+ status, pos, result['title_database'] = parse_perf_title_database(queryvalue_result['value'], pos)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+ result['title_database'][0] = "<null>"
+
+
+ if(objects ~= nil and #objects > 0) then
+ -- Query for the objects
+ local status, queryvalue_result = msrpc.winreg_queryvalue(smbstate, openhkpd_result['handle'], objects)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, queryvalue_result
+ end
+
+ -- Parse the header
+ pos = 1
+ local status, data_block
+ status, pos, data_block = parse_perf_data_block(queryvalue_result['value'], pos)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+
+ -- Move past the header
+ pos = 1 + data_block['HeaderLength']
+
+ -- Parse the data sections
+ for i = 1, data_block['NumObjectTypes'], 1 do
+ local object_start = pos
+
+ local counter_definitions = {}
+ local object_instances = {}
+ local counter_definitions = {}
+
+ -- Get the type of the object (this is basically the class definition -- info about the object instances)
+ local status, object_type
+ status, pos, object_type = parse_perf_object_type(queryvalue_result['value'], pos)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+
+ -- Start setting up the result object
+ --stdnse.debug1("Index = %d\n", object_type['ObjectNameTitleIndex'])
+ local object_name = result['title_database'][object_type['ObjectNameTitleIndex']]
+ result[object_name] = {}
+
+ --stdnse.debug1("\n\nOBJECT: %s\n", object_name)
+ --stdnse.debug1(" Counters: %d\n", object_type['NumCounters'])
+ --stdnse.debug1(" Instances: %d\n", object_type['NumInstances'])
+ --stdnse.debug1("-----------------\n")
+
+ -- Bring the position to the beginning of the counter definitions
+ pos = object_start + object_type['HeaderLength']
+
+ -- Parse the counter definitions
+ for j = 1, object_type['NumCounters'], 1 do
+ status, pos, counter_definitions[j] = parse_perf_counter_definition(queryvalue_result['value'], pos)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+ --stdnse.debug1(" Counter definition #%2d: [%d bytes] %s\n", j, counter_definitions[j]['CounterSize'], result['title_database'][counter_definitions[j]['CounterNameTitleIndex']])
+ end
+
+ -- Bring the position to the beginning of the instances (or counters)
+ pos = object_start + object_type['DefinitionLength']
+
+ -- Check if we have any instances (sometimes we don't -- if we don't, the value returned is a negative)
+ if (object_type['NumInstances'] & 0x80000000) == 0 then
+ -- Parse the object instances and counters
+ for j = 1, object_type['NumInstances'], 1 do
+ local instance_start = pos
+
+ -- Instance definition
+ local status
+ status, pos, object_instances[j] = parse_perf_instance_definition(queryvalue_result['value'], pos)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+
+ -- Set up the instance array
+ local instance_name = object_instances[j]['InstanceName']
+ result[object_name][instance_name] = {}
+
+ -- Bring the pos to the start of the counter block
+ pos = instance_start + object_instances[j]['ByteLength']
+
+ --stdnse.debug1("\n INSTANCE: %s\n", instance_name)
+ --stdnse.debug1(" Length: %d\n", object_instances[j]['ByteLength'])
+ --stdnse.debug1(" NameOffset: %d\n", object_instances[j]['NameOffset'])
+ --stdnse.debug1(" NameLength: %d\n", object_instances[j]['NameLength'])
+ --stdnse.debug1(" --------------\n")
+
+ -- The counter block
+ local status, counter_block
+ status, pos, counter_block = parse_perf_counter_block(queryvalue_result['value'], pos)
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+
+ for k = 1, object_type['NumCounters'], 1 do
+ -- Each individual counter
+ local status, counter_result
+ status, pos, counter_result = parse_perf_counter(queryvalue_result['value'], pos, counter_definitions[k])
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+
+ local counter_name = result['title_database'][counter_definitions[k]['CounterNameTitleIndex']]
+ --stdnse.debug1(" %s: %s\n", counter_name, counter_result)
+
+ -- Save it in the result
+ result[object_name][instance_name][counter_name] = counter_result
+ end
+
+ -- Bring the pos to the end of the next section
+ pos = instance_start + object_instances[j]['ByteLength'] + counter_block['ByteLength']
+ end
+ else
+ for k = 1, object_type['NumCounters'], 1 do
+ -- Each individual counter
+ local status, counter_result
+ status, pos, counter_result = parse_perf_counter(queryvalue_result['value'], pos, counter_definitions[k])
+ if(status == false) then
+ msrpc.stop_smb(smbstate)
+ return false, pos
+ end
+
+ local counter_name = result['title_database'][counter_definitions[k]['CounterNameTitleIndex']]
+ --stdnse.debug1(" %s: %s\n", counter_name, counter_result)
+
+ -- Save it in the result
+ result[object_name][counter_name] = counter_result
+ end
+ end
+ end
+
+ -- Blank out the database
+ result['title_database'] = nil
+ end
+
+ msrpc.stop_smb(smbstate)
+
+ return true, result
+end
+
+
+
+return _ENV;