creport.c File Reference

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <ddk/ntddk.h>
#include "dumpinfo.h"

Include dependency graph for creport.c:

Go to the source code of this file.

Macros
#define	PROTO_LPC
#define	LPC_CONNECT_FLAG1   0x00000001
#define	LPC_CONNECT_FLAG2   0x00000010
#define	LPC_CONNECT_FLAG3   0x00000100
#define	LPC_CONNECT_FLAG4   0x00001000
#define	LPC_CONNECT_FLAG5   0x00010000
#define	BUF_SIZE   1024
#define	MAXARG   5000000

Functions
	NTSTATUS (WINAPI *CreatePort)(PVOID Buffer
VOID	TryCreatePort (char *port_name)
	main (int argc, char *argv[])

Variables
IN POBJECT_ATTRIBUTES PortAttributes	OPTIONAL
IN POBJECT_ATTRIBUTES PortAttributes IN ACCESS_MASK	DesiredAccess
IN POBJECT_ATTRIBUTES PortAttributes IN ACCESS_MASK IN DWORD	Unknown3
IN POBJECT_ATTRIBUTES PortAttributes IN ACCESS_MASK IN DWORD IN ULONG	Flags
IN CINT	ObjectInformationClass
IN CINT OUT PVOID	ObjectInformation
IN CINT OUT PVOID IN ULONG	Length
IN CINT OUT PVOID IN ULONG OUT PULONG	ResultLength

Macro Definition Documentation

BUF_SIZE

#define BUF_SIZE   1024

Definition at line 46 of file creport.c.

LPC_CONNECT_FLAG1

#define LPC_CONNECT_FLAG1   0x00000001

Definition at line 18 of file creport.c.

LPC_CONNECT_FLAG2

#define LPC_CONNECT_FLAG2   0x00000010

Definition at line 19 of file creport.c.

LPC_CONNECT_FLAG3

#define LPC_CONNECT_FLAG3   0x00000100

Definition at line 20 of file creport.c.

LPC_CONNECT_FLAG4

#define LPC_CONNECT_FLAG4   0x00001000

Definition at line 21 of file creport.c.

LPC_CONNECT_FLAG5

#define LPC_CONNECT_FLAG5   0x00010000

Definition at line 22 of file creport.c.

MAXARG

#define MAXARG   5000000

Definition at line 47 of file creport.c.

PROTO_LPC

#define PROTO_LPC

Definition at line 14 of file creport.c.

Function Documentation

main()

main	(	int argc	,
		char *	argv[]
	)

Definition at line 135 of file creport.c.

{
    HINSTANCE ntdll;
 
    if (argc != 2)
    {
        printf("WNT LPC Port Creator\n");
        printf("Usage: %s [port_name]\n",argv[0]);
        exit(EXIT_FAILURE);
    }
    printf("LoadLibrary(NTDLL)\n");
    ntdll = LoadLibrary("NTDLL");
    if (ntdll == NULL)
    {
        printf("Could not load NTDLL\n");
        return EXIT_FAILURE;
    }
    printf("GetProcAddress(NTDLL.NtCreatePort)\n");
    CreatePort = (VOID*) GetProcAddress(
                    ntdll,
                    "NtCreatePort"
                    );
    if (CreatePort == NULL)
    {
        FreeLibrary(ntdll);
        printf("Could not find NTDLL.NtCreatePort\n");
        return EXIT_FAILURE;
    }
    printf("GetProcAddress(NTDLL.NtQueryObject)\n");
    QueryObject = (VOID*) GetProcAddress(
                    ntdll,
                    "NtQueryObject"
                    );
    if (QueryObject == NULL)
    {
        FreeLibrary(ntdll);
        printf("Could not find NTDLL.NtQueryObject\n");
        return EXIT_FAILURE;
    }
    printf("GetProcAddress(NTDLL.NtYieldExecution)\n");
    YieldExecution = (VOID*) GetProcAddress(
                    ntdll,
                    "NtYieldExecution"
                    );
    if (YieldExecution == NULL)
    {
        FreeLibrary(ntdll);
        printf("Could not find NTDLL.NtYieldExecution\n");
        return EXIT_FAILURE;
    }
    printf("TryCreatePort(%s)\n",argv[1]);
    TryCreatePort(argv[1]);
    printf("Done\n");
    return EXIT_SUCCESS;
}

NTSTATUS()

NTSTATUS

(

WINAPI *

CreatePort

)

TryCreatePort()

VOID TryCreatePort

(

char *

port_name

)

Definition at line 51 of file creport.c.

{
    DWORD           Status = 0;
    HANDLE          Port = 0;
    int         i;
    UNICODE_STRING      PortName;
    OBJECT_ATTRIBUTES   ObjectAttributes;
    WORD            Name [BUF_SIZE] = {0};
    int         dwx = 0;
    char            * port_name_save = port_name;
 
    /*
     * Convert the port's name to Unicode.
     */
    for (
        PortName.Length = 0;
        (   *port_name
            && (PortName.Length < BUF_SIZE)
            );
        )
    {
        Name[PortName.Length++] = (WORD) *port_name++;
    }
    Name[PortName.Length] = 0;
 
    PortName.Length = PortName.Length * sizeof (WORD);
    PortName.MaximumLength = PortName.Length + sizeof (WORD);
    PortName.Buffer = (PWSTR) Name;
    /*
     * Prepare the port object attributes.
     */
    ObjectAttributes.Length =
        sizeof (OBJECT_ATTRIBUTES);
    ObjectAttributes.RootDirectory =
        NULL;
    ObjectAttributes.ObjectName =
        & PortName;
    ObjectAttributes.Attributes =
        0; //OBJ_CASE_INSENSITIVE --> STATUS_INVALID_PARAMETER ==> case sensitive!;
    ObjectAttributes.SecurityDescriptor =
        NULL;
    ObjectAttributes.SecurityQualityOfService =
        NULL;
    /*
     * Try to issue a connection request.
     */
    Port = 0;
    Status = CreatePort(
            & Port,
            & ObjectAttributes,
            0, /* ACCESS_MASK? */
            0, /* Unknown3 */
            LPC_CONNECT_FLAG5
            );
    if (Status == STATUS_SUCCESS)
    {
        DumpInfo(
            Name,
            Status,
            "created",
            Port
            );
        /* Hot waiting */
        for (dwx=0; dwx<MAXARG; ++dwx)
        {
            YieldExecution();
        }
        if (FALSE == CloseHandle(Port))
        {
            printf(
                "Could not close the port handle %08X.\n",
                Port
                );
        }
        return;
    }
    printf(
        "Creating port \"%s\" failed (Status = %08X).\n",
        port_name_save,
        Status
        );
}

Referenced by main().

Variable Documentation

DesiredAccess

IN POBJECT_ATTRIBUTES PortAttributes IN ACCESS_MASK DesiredAccess

Definition at line 29 of file creport.c.

Flags

IN POBJECT_ATTRIBUTES PortAttributes IN ACCESS_MASK IN DWORD IN ULONG Flags

Definition at line 31 of file creport.c.

Length

IN CINT OUT PVOID IN ULONG Length

Definition at line 39 of file creport.c.

ObjectInformation

IN CINT OUT PVOID ObjectInformation

Definition at line 38 of file creport.c.

ObjectInformationClass

IN CINT ObjectInformationClass

Definition at line 37 of file creport.c.

OPTIONAL

IN POBJECT_ATTRIBUTES PortAttributes OPTIONAL

Definition at line 28 of file creport.c.

ResultLength

IN CINT OUT PVOID IN ULONG OUT PULONG ResultLength

Definition at line 40 of file creport.c.

Unknown3

IN POBJECT_ATTRIBUTES PortAttributes IN ACCESS_MASK IN DWORD Unknown3

Definition at line 30 of file creport.c.