609 lines
16 KiB
C
609 lines
16 KiB
C
#include "brian.h"
|
||
|
||
typedef struct _ASYNC_READ {
|
||
|
||
USHORT FileIndex;
|
||
BOOLEAN UseEvent;
|
||
PIO_APC_ROUTINE ApcRoutine;
|
||
PVOID ApcContext;
|
||
PUSHORT BufferIndexPtr;
|
||
USHORT BufferIndex;
|
||
ULONG Length;
|
||
PLARGE_INTEGER ByteOffsetPtr;
|
||
LARGE_INTEGER ByteOffset;
|
||
PULONG KeyPtr;
|
||
ULONG Key;
|
||
BOOLEAN DisplayParms;
|
||
BOOLEAN VerboseResults;
|
||
USHORT AsyncIndex;
|
||
|
||
} ASYNC_READ, *PASYNC_READ;
|
||
|
||
#define USE_EVENT_DEFAULT TRUE
|
||
#define APC_ROUTINE_DEFAULT NULL
|
||
#define APC_CONTEXT_DEFAULT NULL
|
||
#define READ_LENGTH_DEFAULT 100L
|
||
#define DISPLAY_PARMS_DEFAULT FALSE
|
||
#define VERBOSE_RESULTS_DEFAULT FALSE
|
||
|
||
VOID
|
||
FullRead(
|
||
IN OUT PASYNC_READ AsyncRead
|
||
);
|
||
|
||
|
||
VOID
|
||
InputRead(
|
||
IN PCHAR ParamBuffer
|
||
)
|
||
{
|
||
ULONG FileIndex;
|
||
BOOLEAN UseEvent;
|
||
PIO_APC_ROUTINE ApcRoutine;
|
||
PVOID ApcContext;
|
||
PUSHORT BufferIndexPtr;
|
||
USHORT BufferIndex;
|
||
ULONG Length;
|
||
PLARGE_INTEGER ByteOffsetPtr;
|
||
LARGE_INTEGER ByteOffset;
|
||
PULONG KeyPtr;
|
||
ULONG Key;
|
||
BOOLEAN DisplayParms;
|
||
BOOLEAN VerboseResults;
|
||
USHORT AsyncIndex;
|
||
|
||
BOOLEAN ParamReceived;
|
||
BOOLEAN LastInput;
|
||
|
||
//
|
||
// Set the defaults.
|
||
//
|
||
|
||
UseEvent = USE_EVENT_DEFAULT;
|
||
ApcRoutine = APC_ROUTINE_DEFAULT;
|
||
ApcContext = APC_CONTEXT_DEFAULT;
|
||
BufferIndexPtr = NULL;
|
||
BufferIndex = 0;
|
||
Length = READ_LENGTH_DEFAULT;
|
||
ByteOffsetPtr = NULL;
|
||
ByteOffset = RtlConvertUlongToLargeInteger( 0L );
|
||
KeyPtr = NULL;
|
||
Key = 0;
|
||
DisplayParms = DISPLAY_PARMS_DEFAULT;
|
||
VerboseResults = VERBOSE_RESULTS_DEFAULT;
|
||
AsyncIndex = 0;
|
||
|
||
ParamReceived = FALSE;
|
||
LastInput = TRUE;
|
||
|
||
//
|
||
// While there is more input, analyze the parameter and update the
|
||
// query flags.
|
||
//
|
||
|
||
while (TRUE) {
|
||
|
||
ULONG DummyCount;
|
||
ULONG TempIndex;
|
||
|
||
//
|
||
// Swallow leading white spaces.
|
||
//
|
||
ParamBuffer = SwallowWhite( ParamBuffer, &DummyCount );
|
||
|
||
if (*ParamBuffer) {
|
||
|
||
//
|
||
// If the next parameter is legal then check the paramter value.
|
||
// Update the parameter value.
|
||
//
|
||
if ((*ParamBuffer == '-'
|
||
|| *ParamBuffer == '/')
|
||
&& (ParamBuffer++, *ParamBuffer != '\0')) {
|
||
|
||
//
|
||
// Switch on the next character.
|
||
//
|
||
|
||
switch (*ParamBuffer) {
|
||
|
||
//
|
||
// Update the buffer index.
|
||
//
|
||
case 'b' :
|
||
case 'B' :
|
||
|
||
//
|
||
// Move to the next character, as long as there
|
||
// are no white spaces continue analyzing letters.
|
||
// On the first bad letter, skip to the next
|
||
// parameter.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
TempIndex = AsciiToInteger( ParamBuffer );
|
||
BufferIndex = (USHORT) TempIndex;
|
||
BufferIndexPtr = &BufferIndex;
|
||
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
break;
|
||
|
||
//
|
||
// Update the byte count.
|
||
//
|
||
|
||
case 'l' :
|
||
case 'L' :
|
||
|
||
//
|
||
// Move to the next character, as long as there
|
||
// are no white spaces continue analyzing letters.
|
||
// On the first bad letter, skip to the next
|
||
// parameter.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
Length = AsciiToInteger( ParamBuffer );
|
||
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
break;
|
||
|
||
//
|
||
// Update the file handle index.
|
||
//
|
||
|
||
case 'i' :
|
||
case 'I' :
|
||
|
||
//
|
||
// Move to the next character, as long as there
|
||
// are no white spaces continue analyzing letters.
|
||
// On the first bad letter, skip to the next
|
||
// parameter.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
FileIndex = AsciiToInteger( ParamBuffer );
|
||
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
ParamReceived = TRUE;
|
||
|
||
break;
|
||
|
||
//
|
||
// Update the key value.
|
||
//
|
||
|
||
case 'k' :
|
||
case 'K' :
|
||
|
||
//
|
||
// Move to the next character, as long as there
|
||
// are no white spaces continue analyzing letters.
|
||
// On the first bad letter, skip to the next
|
||
// parameter.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
Key = AsciiToInteger( ParamBuffer );
|
||
KeyPtr = &Key;
|
||
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
break;
|
||
|
||
//
|
||
// Update the offset of the read.
|
||
//
|
||
|
||
case 'o' :
|
||
case 'O' :
|
||
|
||
//
|
||
// Move to the next character, as long as there
|
||
// are no white spaces continue analyzing letters.
|
||
// On the first bad letter, skip to the next
|
||
// parameter.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
ByteOffset.QuadPart = AsciiToLargeInteger( ParamBuffer );
|
||
ByteOffsetPtr = &ByteOffset;
|
||
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
break;
|
||
|
||
//
|
||
// Check whether we should use an event to signal
|
||
// completion.
|
||
//
|
||
|
||
case 'e' :
|
||
case 'E' :
|
||
|
||
//
|
||
// Legal values for use event are T/t or F/f.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
if (*ParamBuffer == 'T'
|
||
|| *ParamBuffer == 't') {
|
||
|
||
UseEvent = TRUE;
|
||
ParamBuffer++;
|
||
|
||
} else if (*ParamBuffer == 'F'
|
||
|| *ParamBuffer == 'f') {
|
||
|
||
UseEvent = FALSE;
|
||
ParamBuffer++;
|
||
}
|
||
|
||
break;
|
||
|
||
case 'v' :
|
||
case 'V' :
|
||
|
||
//
|
||
// Legal values for params are T/t or F/f.
|
||
//
|
||
ParamBuffer++;
|
||
|
||
if( *ParamBuffer == 'T'
|
||
|| *ParamBuffer == 't' ) {
|
||
|
||
VerboseResults = TRUE;
|
||
ParamBuffer++;
|
||
|
||
} else if( *ParamBuffer == 'F'
|
||
|| *ParamBuffer == 'f' ) {
|
||
|
||
VerboseResults = FALSE;
|
||
ParamBuffer++;
|
||
|
||
}
|
||
|
||
break;
|
||
|
||
case 'y' :
|
||
case 'Y' :
|
||
|
||
//
|
||
// Set the display parms flag and jump over this
|
||
// character.
|
||
//
|
||
DisplayParms = TRUE;
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
break;
|
||
|
||
case 'z' :
|
||
case 'Z' :
|
||
|
||
//
|
||
// Set flag for more input and jump over this char.
|
||
//
|
||
LastInput = FALSE;
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
break;
|
||
|
||
default :
|
||
|
||
//
|
||
// Swallow to the next white space and continue the
|
||
// loop.
|
||
//
|
||
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
|
||
|
||
}
|
||
|
||
}
|
||
|
||
//
|
||
// Else the text is invalid, skip the entire block.
|
||
//
|
||
//
|
||
|
||
//
|
||
// Else if there is no input then exit.
|
||
//
|
||
} else if( LastInput ) {
|
||
|
||
break;
|
||
|
||
//
|
||
// Else try to read another line for open parameters.
|
||
//
|
||
} else {
|
||
|
||
|
||
|
||
}
|
||
|
||
}
|
||
|
||
//
|
||
// If no parameters were received then display the syntax message.
|
||
//
|
||
if (!ParamReceived) {
|
||
|
||
printf( "\n Usage: rd [options]* -i<index> [options]*\n" );
|
||
printf( "\n Options:" );
|
||
printf( "\n -i<digits> File index" );
|
||
printf( "\n -l<digits> Read length" );
|
||
printf( "\n -b<digits> Buffer index" );
|
||
printf( "\n -k<digits> Locked bytes key value" );
|
||
printf( "\n -o<digits> Read offset" );
|
||
printf( "\n -e[t|f] Use event on completion" );
|
||
printf( "\n -v[t|f] Verbose results" );
|
||
printf( "\n -y Display parameters to query" );
|
||
printf( "\n -z Additional input line" );
|
||
printf( "\n\n" );
|
||
|
||
//
|
||
// Else call our read routine.
|
||
//
|
||
|
||
} else {
|
||
|
||
NTSTATUS Status;
|
||
SIZE_T RegionSize;
|
||
ULONG TempIndex;
|
||
|
||
PASYNC_READ AsyncRead;
|
||
|
||
HANDLE ThreadHandle;
|
||
ULONG ThreadId;
|
||
|
||
RegionSize = sizeof( ASYNC_READ );
|
||
|
||
Status = AllocateBuffer( 0, &RegionSize, &TempIndex );
|
||
AsyncIndex = (USHORT) TempIndex;
|
||
|
||
if (!NT_SUCCESS( Status )) {
|
||
|
||
printf("\n\tInputRead: Unable to allocate async structure" );
|
||
|
||
} else {
|
||
|
||
AsyncRead = (PASYNC_READ) Buffers[AsyncIndex].Buffer;
|
||
|
||
AsyncRead->FileIndex = (USHORT) FileIndex;
|
||
AsyncRead->UseEvent = UseEvent;
|
||
AsyncRead->ApcRoutine = ApcRoutine;
|
||
AsyncRead->ApcContext = ApcContext;
|
||
|
||
AsyncRead->BufferIndex = BufferIndex;
|
||
AsyncRead->BufferIndexPtr = BufferIndexPtr
|
||
? &AsyncRead->BufferIndex
|
||
: BufferIndexPtr;
|
||
AsyncRead->Length = Length;
|
||
AsyncRead->ByteOffset = ByteOffset;
|
||
AsyncRead->ByteOffsetPtr = ByteOffsetPtr
|
||
? &AsyncRead->ByteOffset
|
||
: ByteOffsetPtr;
|
||
AsyncRead->Key = Key;
|
||
AsyncRead->KeyPtr = KeyPtr
|
||
? &AsyncRead->Key
|
||
: KeyPtr;
|
||
|
||
AsyncRead->DisplayParms = DisplayParms;
|
||
AsyncRead->VerboseResults = VerboseResults;
|
||
AsyncRead->AsyncIndex = AsyncIndex;
|
||
|
||
if (!SynchronousCmds) {
|
||
|
||
ThreadHandle = CreateThread( NULL,
|
||
0,
|
||
FullRead,
|
||
AsyncRead,
|
||
0,
|
||
&ThreadId );
|
||
|
||
if (ThreadHandle == 0) {
|
||
|
||
printf( "\nInputRead: Spawning thread fails -> %d\n", GetLastError() );
|
||
return;
|
||
}
|
||
|
||
} else {
|
||
|
||
FullRead( AsyncRead );
|
||
}
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
|
||
|
||
VOID
|
||
FullRead(
|
||
IN OUT PASYNC_READ AsyncRead
|
||
)
|
||
{
|
||
NTSTATUS Status;
|
||
IO_STATUS_BLOCK Iosb;
|
||
|
||
HANDLE ThisEvent;
|
||
USHORT ThisEventIndex;
|
||
USHORT ThisBufferIndex;
|
||
|
||
BOOLEAN UnwindReadBuffer = FALSE;
|
||
BOOLEAN UnwindEvent = FALSE;
|
||
|
||
Status = STATUS_SUCCESS;
|
||
|
||
if (AsyncRead->DisplayParms) {
|
||
|
||
bprint "\nRead Parameters" );
|
||
bprint "\n File Handle Index -> %d", AsyncRead->FileIndex );
|
||
bprint "\n UseEvent -> %d", AsyncRead->UseEvent );
|
||
bprint "\n ApcRoutine -> %08lx", AsyncRead->ApcRoutine );
|
||
bprint "\n ApcContext -> %08lx", AsyncRead->ApcContext );
|
||
bprint "\n Buffer Index Ptr -> %08lx", AsyncRead->BufferIndexPtr );
|
||
if (AsyncRead->BufferIndexPtr) {
|
||
|
||
bprint "\n BufferIndex value -> %04x", AsyncRead->BufferIndex );
|
||
}
|
||
|
||
bprint "\n Length -> %08lx", AsyncRead->Length );
|
||
|
||
bprint "\n Byte Offset Ptr -> %08lx", AsyncRead->ByteOffsetPtr );
|
||
if (AsyncRead->ByteOffsetPtr) {
|
||
|
||
bprint "\n Byte Offset High -> %08lx", AsyncRead->ByteOffset.HighPart );
|
||
bprint "\n Byte Offset Low -> %08lx", AsyncRead->ByteOffset.LowPart );
|
||
}
|
||
|
||
bprint "\n Key Ptr -> %08lx", AsyncRead->KeyPtr );
|
||
|
||
if (AsyncRead->KeyPtr) {
|
||
|
||
bprint "\n Key -> %ul", AsyncRead->Key );
|
||
}
|
||
|
||
bprint "\n\n" );
|
||
}
|
||
|
||
try {
|
||
|
||
SIZE_T ThisLength;
|
||
|
||
//
|
||
// If we need a buffer, allocate it now.
|
||
//
|
||
|
||
if (AsyncRead->BufferIndexPtr == NULL) {
|
||
|
||
ULONG TempIndex;
|
||
|
||
ThisLength = AsyncRead->Length;
|
||
|
||
Status = AllocateBuffer( 0L, &ThisLength, &TempIndex );
|
||
|
||
ThisBufferIndex = (USHORT) TempIndex;
|
||
|
||
if (!NT_SUCCESS( Status )) {
|
||
|
||
bprint "\n\tFullRead: Unable to allocate a read buffer" );
|
||
try_return( Status );
|
||
}
|
||
|
||
bprint "\n\tFullRead: Reading into buffer -> %04x", ThisBufferIndex );
|
||
bprint "\n" );
|
||
|
||
UnwindReadBuffer = TRUE;
|
||
|
||
} else {
|
||
|
||
ThisBufferIndex = AsyncRead->BufferIndex;
|
||
}
|
||
|
||
//
|
||
// Check that the buffer index is valid.
|
||
//
|
||
|
||
if (ThisBufferIndex >= MAX_BUFFERS) {
|
||
|
||
bprint "\n\tFullRead: The read buffer index is invalid" );
|
||
try_return( Status = STATUS_INVALID_HANDLE );
|
||
}
|
||
|
||
//
|
||
// Check that the file index is valid.
|
||
//
|
||
|
||
if (AsyncRead->FileIndex >= MAX_HANDLES) {
|
||
|
||
bprint "\n\tFullRead: The file index is invalid" );
|
||
try_return( Status = STATUS_INVALID_HANDLE );
|
||
}
|
||
|
||
//
|
||
// If we need an event, allocate and set it now.
|
||
//
|
||
|
||
if (AsyncRead->UseEvent == TRUE) {
|
||
|
||
Status = ObtainEvent( &ThisEventIndex );
|
||
|
||
if (!NT_SUCCESS( Status )) {
|
||
|
||
bprint "\n\tFullRead: Unable to allocate an event" );
|
||
try_return( Status );
|
||
}
|
||
|
||
UnwindEvent = TRUE;
|
||
ThisEvent = Events[ThisEventIndex].Handle;
|
||
|
||
} else {
|
||
|
||
ThisEvent = 0;
|
||
}
|
||
|
||
//
|
||
// Call the read routine.
|
||
//
|
||
|
||
Status = NtReadFile( Handles[AsyncRead->FileIndex].Handle,
|
||
ThisEvent,
|
||
AsyncRead->ApcRoutine,
|
||
AsyncRead->ApcContext,
|
||
&Iosb,
|
||
Buffers[ThisBufferIndex].Buffer,
|
||
AsyncRead->Length,
|
||
AsyncRead->ByteOffsetPtr,
|
||
AsyncRead->KeyPtr );
|
||
|
||
UnwindReadBuffer = FALSE;
|
||
|
||
if (AsyncRead->VerboseResults) {
|
||
|
||
bprint "\nReadFile: Status -> %08lx", Status );
|
||
|
||
if (AsyncRead->UseEvent && NT_SUCCESS( Status )) {
|
||
|
||
if ((Status = NtWaitForSingleObject( ThisEvent,
|
||
FALSE,
|
||
NULL )) != STATUS_SUCCESS) {
|
||
|
||
bprint "\n\tReadFile: Wait for event failed -> %08lx", Status );
|
||
bprint "\n" );
|
||
try_return( Status );
|
||
}
|
||
}
|
||
|
||
if (NT_SUCCESS( Status )) {
|
||
|
||
bprint "\n Iosb.Information -> %08lx", Iosb.Information );
|
||
bprint "\n Iosb.Status -> %08lx", Iosb.Status );
|
||
}
|
||
bprint "\n" );
|
||
}
|
||
|
||
try_return( Status );
|
||
|
||
try_exit: NOTHING;
|
||
} finally {
|
||
|
||
if (UnwindReadBuffer) {
|
||
|
||
DeallocateBuffer( ThisBufferIndex );
|
||
}
|
||
|
||
if (UnwindEvent) {
|
||
|
||
FreeEvent( ThisEventIndex );
|
||
}
|
||
|
||
DeallocateBuffer( AsyncRead->AsyncIndex );
|
||
}
|
||
|
||
NtTerminateThread( 0, STATUS_SUCCESS );
|
||
}
|