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-rw-r--r--src/nt_path_converter/device.c61
-rw-r--r--src/nt_path_converter/main.c5
-rw-r--r--src/nt_path_converter/nt2dos.c77
3 files changed, 80 insertions, 63 deletions
diff --git a/src/nt_path_converter/device.c b/src/nt_path_converter/device.c
index fbffd27..5ee0d3e 100644
--- a/src/nt_path_converter/device.c
+++ b/src/nt_path_converter/device.c
@@ -22,15 +22,17 @@ static NTSTATUS device_open(DEVICE_OBJECT *device_object, IRP *irp)
return status;
}
-typedef NTSTATUS (*ioctl_handler)(void *, unsigned long,
- void *, unsigned long,
- ULONG_PTR *);
-
-static NTSTATUS handle_convert_nt_path(void *in_buf,
- unsigned long in_buf_size,
- void *out_buf,
- unsigned long out_buf_size,
- ULONG_PTR *nbwritten)
+typedef NTSTATUS (*ioctl_handler)(
+ void *, unsigned long,
+ void *, unsigned long,
+ ULONG_PTR *);
+
+static NTSTATUS handle_convert_nt_path(
+ void *in_buf,
+ unsigned long in_buf_size,
+ void *out_buf,
+ unsigned long out_buf_size,
+ ULONG_PTR *nbwritten)
{
UNICODE_STRING uUnresolved, uResolved;
NTSTATUS status = STATUS_SUCCESS;
@@ -52,13 +54,13 @@ static NTSTATUS handle_convert_nt_path(void *in_buf,
if (out_buf_size < *nbwritten)
{
status = STATUS_BUFFER_OVERFLOW;
- goto FREE_RESOLVED;
+ goto free_resolved;
}
RtlFillMemory(out_buf, *nbwritten, L'\0');
RtlCopyMemory(out_buf, uResolved.Buffer, uResolved.Length);
-FREE_RESOLVED:
+free_resolved:
ExFreePool(uResolved.Buffer);
return status;
@@ -85,14 +87,16 @@ static NTSTATUS device_ioctl(DEVICE_OBJECT *device_object, IRP *irp)
case CONVERT_NT_PATH:
handler = handle_convert_nt_path;
break;
+
default:
status = irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
goto complete_request;
}
- status = irp->IoStatus.Status = handler(in_buf, in_buf_size,
- out_buf, out_buf_size,
- &irp->IoStatus.Information);
+ status = irp->IoStatus.Status = handler(
+ in_buf, in_buf_size,
+ out_buf, out_buf_size,
+ &irp->IoStatus.Information);
complete_request:
IoCompleteRequest(irp, IO_NO_INCREMENT);
@@ -104,18 +108,20 @@ typedef struct
{
const wchar_t *path;
const wchar_t *symlink;
-} device_info;
+}
+DeviceInfo;
typedef struct
{
DEVICE_OBJECT *object;
UNICODE_STRING path;
UNICODE_STRING symlink;
-} device;
+}
+Device;
#define NUMOF_DEVICES 1
-static device_info devices_info[NUMOF_DEVICES] =
+static DeviceInfo devices_info[NUMOF_DEVICES] =
{
{
L"\\Device\\nt_path_converter",
@@ -123,7 +129,7 @@ static device_info devices_info[NUMOF_DEVICES] =
},
};
-static device devices[NUMOF_DEVICES];
+static Device devices[NUMOF_DEVICES];
static void destroy_device(int i)
{
@@ -145,13 +151,14 @@ static NTSTATUS set_up_device(DRIVER_OBJECT *driver_object, int i)
RtlInitUnicodeString(&devices[i].path, devices_info[i].path);
RtlInitUnicodeString(&devices[i].symlink, devices_info[i].symlink);
- status = IoCreateDevice(driver_object,
- 0,
- &devices[i].path,
- FILE_DEVICE_UNKNOWN,
- FILE_DEVICE_SECURE_OPEN,
- FALSE,
- &devices[i].object);
+ status = IoCreateDevice(
+ driver_object,
+ 0,
+ &devices[i].path,
+ FILE_DEVICE_UNKNOWN,
+ FILE_DEVICE_SECURE_OPEN,
+ FALSE,
+ &devices[i].object);
if (!NT_SUCCESS(status))
return status;
@@ -159,8 +166,8 @@ static NTSTATUS set_up_device(DRIVER_OBJECT *driver_object, int i)
devices[i].object->Flags |= DO_BUFFERED_IO;
devices[i].object->Flags &= ~DO_DEVICE_INITIALIZING;
- if (!NT_SUCCESS(status = IoCreateSymbolicLink(&devices[i].symlink,
- &devices[i].path)))
+ if (!NT_SUCCESS(status = IoCreateSymbolicLink(
+ &devices[i].symlink, &devices[i].path)))
goto delete_device;
return status;
diff --git a/src/nt_path_converter/main.c b/src/nt_path_converter/main.c
index 0dac5c9..7d12e54 100644
--- a/src/nt_path_converter/main.c
+++ b/src/nt_path_converter/main.c
@@ -15,8 +15,9 @@ static void on_driver_unload(DRIVER_OBJECT *driver_object)
destroy_devices();
}
-NTSTATUS DriverEntry(DRIVER_OBJECT *driver_object,
- UNICODE_STRING *registry_path)
+NTSTATUS DriverEntry(
+ DRIVER_OBJECT *driver_object,
+ UNICODE_STRING *registry_path)
{
driver_object->DriverUnload = on_driver_unload;
return set_up_devices(driver_object);
diff --git a/src/nt_path_converter/nt2dos.c b/src/nt_path_converter/nt2dos.c
index 5a21a14..e001fda 100644
--- a/src/nt_path_converter/nt2dos.c
+++ b/src/nt_path_converter/nt2dos.c
@@ -18,14 +18,20 @@ static NTSTATUS get_object_name_info(
NTSTATUS status = STATUS_SUCCESS;
status = ObQueryNameString(object, NULL, 0, &nbneeded);
+
if (status != STATUS_INFO_LENGTH_MISMATCH)
return status;
+
*object_name_info = ExAllocatePoolWithTag(PagedPool, nbneeded, '1l');
+
if (*object_name_info == NULL)
return STATUS_INSUFFICIENT_RESOURCES;
+
status = ObQueryNameString(object, *object_name_info, nbneeded, &nbneeded);
+
if (!NT_SUCCESS(status))
goto free_object_name_info;
+
return status;
free_object_name_info:
@@ -46,36 +52,42 @@ NTSTATUS nt2dos(UNICODE_STRING *u_resolved, UNICODE_STRING *u_unresolved)
USHORT u_resolved_size;
NTSTATUS status = STATUS_SUCCESS;
- InitializeObjectAttributes(&file_attrs,
- u_unresolved,
- OBJ_CASE_INSENSITIVE | OBJ_OPENIF,
- NULL,
- NULL);
-
- status = ZwCreateFile(&file,
- FILE_READ_ATTRIBUTES,
- &file_attrs,
- &io_status_block,
- NULL,
- FILE_ATTRIBUTE_NORMAL,
- FILE_SHARE_READ | FILE_SHARE_WRITE,
- FILE_OPEN,
- FILE_SYNCHRONOUS_IO_NONALERT,
- NULL, 0);
+ InitializeObjectAttributes(
+ &file_attrs,
+ u_unresolved,
+ OBJ_CASE_INSENSITIVE | OBJ_OPENIF,
+ NULL,
+ NULL);
+
+ status = ZwCreateFile(
+ &file,
+ FILE_READ_ATTRIBUTES,
+ &file_attrs,
+ &io_status_block,
+ NULL,
+ FILE_ATTRIBUTE_NORMAL,
+ FILE_SHARE_READ | FILE_SHARE_WRITE,
+ FILE_OPEN,
+ FILE_SYNCHRONOUS_IO_NONALERT,
+ NULL,
+ 0);
if (!NT_SUCCESS(status))
return status;
- status = ObReferenceObjectByHandle(file,
- FILE_READ_ATTRIBUTES,
- *IoFileObjectType,
- KernelMode,
- &file_object,
- NULL);
+ status = ObReferenceObjectByHandle(
+ file,
+ FILE_READ_ATTRIBUTES,
+ *IoFileObjectType,
+ KernelMode,
+ &file_object,
+ NULL);
+
if (!NT_SUCCESS(status))
goto close_file;
status = get_object_name_info(file_object, &file_name_info);
+
if (!NT_SUCCESS(status))
goto close_file;
@@ -83,15 +95,15 @@ NTSTATUS nt2dos(UNICODE_STRING *u_resolved, UNICODE_STRING *u_unresolved)
{
u_resolved->Buffer = ExAllocatePoolWithTag(
PagedPool, file_name_info->Name.Length, '1l');
+
if (u_resolved->Buffer == NULL)
{
status = STATUS_INSUFFICIENT_RESOURCES;
goto free_file_name_info;
}
- RtlInitEmptyUnicodeString(u_resolved,
- u_resolved->Buffer,
- file_name_info->Name.Length);
+ RtlInitEmptyUnicodeString(
+ u_resolved, u_resolved->Buffer, file_name_info->Name.Length);
RtlCopyUnicodeString(u_resolved, &file_name_info->Name);
goto free_file_name_info;
}
@@ -103,15 +115,14 @@ NTSTATUS nt2dos(UNICODE_STRING *u_resolved, UNICODE_STRING *u_unresolved)
goto free_file_name_info;
status = IoVolumeDeviceToDosName(volume_object, &u_dos_name);
+
if (!NT_SUCCESS(status))
goto free_volume_name_info;
- u_resolved_size = file_name_info->Name.Length
- - volume_name_info->Name.Length
- + u_dos_name.Length;
+ u_resolved_size = file_name_info->Name.Length - volume_name_info->Name.Length + u_dos_name.Length;
+
+ u_resolved->Buffer = ExAllocatePoolWithTag(PagedPool, u_resolved_size, '1l');
- u_resolved->Buffer = ExAllocatePoolWithTag(
- PagedPool, u_resolved_size, '1l');
if (u_resolved->Buffer == NULL)
{
status = STATUS_INSUFFICIENT_RESOURCES;
@@ -121,10 +132,8 @@ NTSTATUS nt2dos(UNICODE_STRING *u_resolved, UNICODE_STRING *u_unresolved)
RtlInitEmptyUnicodeString(u_resolved, u_resolved->Buffer, u_resolved_size);
RtlCopyUnicodeString(u_resolved, &u_dos_name);
- file_name_info->Name.Buffer +=
- volume_name_info->Name.Length / sizeof(wchar_t);
- file_name_info->Name.Length -=
- volume_name_info->Name.Length;
+ file_name_info->Name.Buffer += volume_name_info->Name.Length / sizeof(wchar_t);
+ file_name_info->Name.Length -= volume_name_info->Name.Length;
RtlUnicodeStringCat(u_resolved, &file_name_info->Name);
free_dos_name:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 17:40:43 +0000