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windows-nt/Source/XPSP1/NT/base/fs/ntfs/tests/bshell/tnotify.c

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2020-09-26 03:20:57 -05:00
#include "brian.h"
typedef struct _ASYNC_NOTIFY {
USHORT FileIndex;
BOOLEAN UseEvent;
PIO_APC_ROUTINE ApcRoutine;
PVOID ApcContext;
PUSHORT BufferIndexPtr;
USHORT BufferIndex;
ULONG Length;
ULONG CompletionFilter;
BOOLEAN WatchTree;
BOOLEAN DisplayParms;
BOOLEAN VerboseResults;
USHORT AsyncIndex;
} ASYNC_NOTIFY, *PASYNC_NOTIFY;
#define USE_EVENT_DEFAULT TRUE
#define APC_ROUTINE_DEFAULT NULL
#define APC_CONTEXT_DEFAULT NULL
#define LENGTH_DEFAULT 0
#define FILTER_DEFAULT FILE_NOTIFY_CHANGE_FILE_NAME
#define WATCH_TREE_DEFAULT FALSE
#define DISPLAY_PARMS_DEFAULT FALSE
#define VERBOSE_RESULTS_DEFAULT FALSE
VOID
FullNotify(
IN OUT PASYNC_NOTIFY AsyncNotify
);
VOID
InputNotifyChange(
IN PCHAR ParamBuffer
)
{
ULONG FileIndex;
BOOLEAN UseEvent;
PIO_APC_ROUTINE ApcRoutine;
PVOID ApcContext;
PUSHORT BufferIndexPtr;
USHORT BufferIndex;
ULONG Length;
ULONG CompletionFilter;
BOOLEAN WatchTree;
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 = LENGTH_DEFAULT;
CompletionFilter = FILTER_DEFAULT;
WatchTree = WATCH_TREE_DEFAULT;
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')) {
BOOLEAN SwitchBool;
//
// Switch on the next character.
//
switch (*ParamBuffer) {
//
// 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;
//
// 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;
//
// Check whether we should watch the tree.
//
case 'w' :
case 'W' :
//
// Legal values for use event are T/t or F/f.
//
ParamBuffer++;
if (*ParamBuffer == 'T'
|| *ParamBuffer == 't') {
WatchTree = TRUE;
ParamBuffer++;
} else if (*ParamBuffer == 'F'
|| *ParamBuffer == 'f') {
WatchTree = FALSE;
ParamBuffer++;
}
break;
//
// 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;
Length = Buffers[BufferIndex].Length;
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 completion filter.
//
case 'f' :
case 'F' :
//
// 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++;
SwitchBool = TRUE;
while (*ParamBuffer
&& *ParamBuffer != ' '
&& *ParamBuffer != '\t') {
//
// Perform switch on character.
//
switch (*ParamBuffer) {
case 'a' :
case 'A' :
CompletionFilter |= FILE_NOTIFY_CHANGE_FILE_NAME;
break;
case 'b' :
case 'B' :
CompletionFilter |= FILE_NOTIFY_CHANGE_DIR_NAME;
break;
case 'c' :
case 'C' :
CompletionFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
break;
case 'd' :
case 'D' :
CompletionFilter |= FILE_NOTIFY_CHANGE_SIZE;
break;
case 'e' :
case 'E' :
CompletionFilter |= FILE_NOTIFY_CHANGE_LAST_WRITE;
break;
case 'f' :
case 'F' :
CompletionFilter |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
break;
case 'g' :
case 'G' :
CompletionFilter |= FILE_NOTIFY_CHANGE_CREATION;
break;
case 'h' :
case 'H' :
CompletionFilter |= FILE_NOTIFY_CHANGE_EA;
break;
case 'i' :
case 'I' :
CompletionFilter |= FILE_NOTIFY_CHANGE_SECURITY;
break;
case 'j' :
case 'J' :
CompletionFilter |= FILE_NOTIFY_CHANGE_STREAM_NAME;
break;
case 'k' :
case 'K' :
CompletionFilter |= FILE_NOTIFY_CHANGE_STREAM_SIZE;
break;
case 'l' :
case 'L' :
CompletionFilter |= FILE_NOTIFY_CHANGE_STREAM_WRITE;
break;
case 'y' :
case 'Y' :
CompletionFilter = FILE_NOTIFY_VALID_MASK;
break;
case 'z' :
case 'Z' :
CompletionFilter = 0;
break;
default :
ParamBuffer = SwallowNonWhite( ParamBuffer, &DummyCount );
SwitchBool = FALSE;
}
if (!SwitchBool) {
break;
}
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: ncd [options]* -i<index> [options]*\n" );
printf( "\n Options:" );
printf( "\n -i<digits> File index" );
printf( "\n -b<digits> Buffer to store results" );
printf( "\n -l<digits> Stated length of buffer" );
printf( "\n -f<chars> Completion filter" );
printf( "\n -w[t|f] Watch directory tree" );
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 notify routine.
//
} else {
NTSTATUS Status;
SIZE_T RegionSize;
ULONG TempIndex;
PASYNC_NOTIFY AsyncNotify;
HANDLE ThreadHandle;
ULONG ThreadId;
RegionSize = sizeof( ASYNC_NOTIFY );
Status = AllocateBuffer( 0, &RegionSize, &TempIndex );
AsyncIndex = (USHORT) TempIndex;
if (!NT_SUCCESS( Status )) {
printf("\n\tInputRead: Unable to allocate async structure" );
} else {
AsyncNotify = (PASYNC_NOTIFY) Buffers[AsyncIndex].Buffer;
AsyncNotify->FileIndex = (USHORT) FileIndex;
AsyncNotify->UseEvent = UseEvent;
AsyncNotify->ApcRoutine = ApcRoutine;
AsyncNotify->ApcContext = ApcContext;
AsyncNotify->BufferIndex = BufferIndex;
AsyncNotify->BufferIndexPtr = BufferIndexPtr
? &AsyncNotify->BufferIndex
: BufferIndexPtr;
AsyncNotify->Length = Length;
AsyncNotify->CompletionFilter = CompletionFilter;
AsyncNotify->WatchTree = WatchTree;
AsyncNotify->DisplayParms = DisplayParms;
AsyncNotify->VerboseResults = VerboseResults;
AsyncNotify->AsyncIndex = AsyncIndex;
if (!SynchronousCmds) {
ThreadHandle = CreateThread( NULL,
0,
FullNotify,
AsyncNotify,
0,
&ThreadId );
if (ThreadHandle == 0) {
printf( "\nInputNotify: Spawning thread fails -> %d\n", GetLastError() );
return;
}
} else {
FullNotify( AsyncNotify );
}
}
}
return;
}
VOID
FullNotify(
IN OUT PASYNC_NOTIFY AsyncNotify
)
{
NTSTATUS Status;
IO_STATUS_BLOCK Iosb;
HANDLE ThisEvent;
USHORT ThisEventIndex;
USHORT ThisBufferIndex;
BOOLEAN UnwindNotifyBuffer = FALSE;
BOOLEAN UnwindEvent = FALSE;
Status = STATUS_SUCCESS;
if (AsyncNotify->DisplayParms) {
bprint "\nNotify Parameters" );
bprint "\n File Handle Index -> %d", AsyncNotify->FileIndex );
bprint "\n Buffer Index Ptr -> %08lx", AsyncNotify->BufferIndexPtr );
if (AsyncNotify->BufferIndexPtr) {
bprint "\n BufferIndex value -> %04x", AsyncNotify->BufferIndex );
}
bprint "\n Length -> %08lx", AsyncNotify->Length );
bprint "\n CompletionFilter -> %08lx", AsyncNotify->CompletionFilter );
bprint "\n WatchTree -> %d", AsyncNotify->WatchTree );
bprint "\n UseEvent -> %d", AsyncNotify->UseEvent );
bprint "\n ApcRoutine -> %08lx", AsyncNotify->ApcRoutine );
bprint "\n ApcContext -> %08lx", AsyncNotify->ApcContext );
bprint "\n\n" );
}
try {
SIZE_T ThisLength;
//
// If we need a buffer, allocate it now.
//
if (AsyncNotify->BufferIndexPtr == NULL ) {
ULONG TempIndex;
ThisLength = 4096;
Status = AllocateBuffer( 0L, &ThisLength, &TempIndex );
ThisBufferIndex = (USHORT) TempIndex;
if (!NT_SUCCESS( Status )) {
bprint "\n\tFullNotify: Unable to allocate a notify buffer" );
try_return( Status );
}
bprint "\n\tFullNotify: Reading into buffer -> %04x\n", ThisBufferIndex );
bprint "\n" );
UnwindNotifyBuffer = TRUE;
AsyncNotify->Length = (ULONG) ThisLength;
} else {
ThisBufferIndex = AsyncNotify->BufferIndex;
}
//
// Check that the buffer index is valid.
//
if (ThisBufferIndex >= MAX_BUFFERS) {
bprint "\n\tFullNotify: The read buffer index is invalid" );
try_return( Status = STATUS_INVALID_HANDLE );
}
//
// Check that the file index is valid.
//
if (AsyncNotify->FileIndex >= MAX_HANDLES) {
bprint "\n\tFullNotify: The file index is invalid" );
try_return( Status = STATUS_INVALID_HANDLE );
}
//
// If we need an event, allocate and set it now.
//
if (AsyncNotify->UseEvent == TRUE) {
Status = ObtainEvent( &ThisEventIndex );
if (!NT_SUCCESS( Status )) {
bprint "\n\tFullNotify: Unable to allocate an event" );
try_return( Status );
}
UnwindEvent = TRUE;
ThisEvent = Events[ThisEventIndex].Handle;
} else {
ThisEvent = 0;
}
//
// Call the read routine.
//
Status = NtNotifyChangeDirectoryFile( Handles[AsyncNotify->FileIndex].Handle,
ThisEvent,
AsyncNotify->ApcRoutine,
AsyncNotify->ApcContext,
&Iosb,
Buffers[ThisBufferIndex].Buffer,
AsyncNotify->Length,
AsyncNotify->CompletionFilter,
AsyncNotify->WatchTree );
if (AsyncNotify->VerboseResults) {
bprint "\nNotifyChangeDir: Status -> %08lx\n", Status );
if (AsyncNotify->UseEvent && NT_SUCCESS( Status )) {
if ((Status = NtWaitForSingleObject( ThisEvent,
FALSE,
NULL )) != STATUS_SUCCESS) {
bprint "\n\tNotifyChangeDir: Wait for event failed -> %08lx\n", Status );
try_return( Status );
}
}
if (NT_SUCCESS( Status )) {
bprint "\nNotifyChangeDir: Iosb.Information -> %08lx", Iosb.Information );
bprint "\nNotifyChangeDir: Iosb.Status -> %08lx", Iosb.Status );
}
bprint "\n" );
}
try_return( Status );
try_exit: NOTHING;
} finally {
if (UnwindEvent) {
FreeEvent( ThisEventIndex );
}
DeallocateBuffer( AsyncNotify->AsyncIndex );
}
NtTerminateThread( 0, STATUS_SUCCESS );
}
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