Add checks for DR channel

channels/drive/client/drive_file.c

@@ -561,6 +561,9 @@ BOOL drive_file_set_information(DRIVE_FILE* file, UINT32 FsInformationClass, UIN
 	switch (FsInformationClass)
 	{
 		case FileBasicInformation:
+			if (Stream_GetRemainingLength(input) < 36)
+				return FALSE;
+
 			/* http://msdn.microsoft.com/en-us/library/cc232094.aspx */
 			Stream_Read_UINT64(input, liCreationTime.QuadPart);
 			Stream_Read_UINT64(input, liLastAccessTime.QuadPart);
@@ -620,6 +623,9 @@ BOOL drive_file_set_information(DRIVE_FILE* file, UINT32 FsInformationClass, UIN
 
 		/* http://msdn.microsoft.com/en-us/library/cc232067.aspx */
 		case FileAllocationInformation:
+			if (Stream_GetRemainingLength(input) < 8)
+				return FALSE;
+
 			/* http://msdn.microsoft.com/en-us/library/cc232076.aspx */
 			Stream_Read_INT64(input, size);
 
@@ -656,7 +662,12 @@ BOOL drive_file_set_information(DRIVE_FILE* file, UINT32 FsInformationClass, UIN
 				break; /* TODO: SetLastError ??? */
 
 			if (Length)
+			{
+				if (Stream_GetRemainingLength(input) < 1)
+					return FALSE;
+
 				Stream_Read_UINT8(input, delete_pending);
+			}
 			else
 				delete_pending = 1;
 
@@ -676,13 +687,19 @@ BOOL drive_file_set_information(DRIVE_FILE* file, UINT32 FsInformationClass, UIN
 			break;
 
 		case FileRenameInformation:
+			if (Stream_GetRemainingLength(input) < 6)
+				return FALSE;
+
 			/* http://msdn.microsoft.com/en-us/library/cc232085.aspx */
 			Stream_Read_UINT8(input, ReplaceIfExists);
 			Stream_Seek_UINT8(input); /* RootDirectory */
 			Stream_Read_UINT32(input, FileNameLength);
+
+			if (Stream_GetRemainingLength(input) < FileNameLength)
+				return FALSE;
+
 			fullpath = drive_file_combine_fullpath(file->basepath, (WCHAR*)Stream_Pointer(input),
 			                                       FileNameLength);
-
 			if (!fullpath)
 			{
 				WLog_ERR(TAG, "drive_file_combine_fullpath failed!");

channels/drive/client/drive_main.c

@@ -274,10 +274,13 @@ static UINT drive_process_irp_read(DRIVE_DEVICE* drive, IRP* irp)
 	if (!drive || !irp || !irp->output || !irp->Complete)
 		return ERROR_INVALID_PARAMETER;
 
+	if (Stream_GetRemainingLength(irp->input) < 12)
+		return ERROR_INVALID_DATA;
+
 	Stream_Read_UINT32(irp->input, Length);
 	Stream_Read_UINT64(irp->input, Offset);
-	file = drive_get_file_by_id(drive, irp->FileId);
 
+	file = drive_get_file_by_id(drive, irp->FileId);
 	if (!file)
 	{
 		irp->IoStatus = STATUS_UNSUCCESSFUL;
@@ -328,11 +331,14 @@ static UINT drive_process_irp_write(DRIVE_DEVICE* drive, IRP* irp)
 	if (!drive || !irp || !irp->input || !irp->output || !irp->Complete)
 		return ERROR_INVALID_PARAMETER;
 
+	if (Stream_GetRemainingLength(irp->input) < 32)
+		return ERROR_INVALID_DATA;
+
 	Stream_Read_UINT32(irp->input, Length);
 	Stream_Read_UINT64(irp->input, Offset);
 	Stream_Seek(irp->input, 20); /* Padding */
-	file = drive_get_file_by_id(drive, irp->FileId);
 
+	file = drive_get_file_by_id(drive, irp->FileId);
 	if (!file)
 	{
 		irp->IoStatus = STATUS_UNSUCCESSFUL;
@@ -367,9 +373,12 @@ static UINT drive_process_irp_query_information(DRIVE_DEVICE* drive, IRP* irp)
 	if (!drive || !irp || !irp->Complete)
 		return ERROR_INVALID_PARAMETER;
 
-	Stream_Read_UINT32(irp->input, FsInformationClass);
+	if (Stream_GetRemainingLength(irp->input) < 4)
-	file = drive_get_file_by_id(drive, irp->FileId);
+		return ERROR_INVALID_DATA;
 
+	Stream_Read_UINT32(irp->input, FsInformationClass);
+
+	file = drive_get_file_by_id(drive, irp->FileId);
 	if (!file)
 	{
 		irp->IoStatus = STATUS_UNSUCCESSFUL;
@@ -396,11 +405,14 @@ static UINT drive_process_irp_set_information(DRIVE_DEVICE* drive, IRP* irp)
 	if (!drive || !irp || !irp->Complete || !irp->input || !irp->output)
 		return ERROR_INVALID_PARAMETER;
 
+	if (Stream_GetRemainingLength(irp->input) < 32)
+		return ERROR_INVALID_DATA;
+
 	Stream_Read_UINT32(irp->input, FsInformationClass);
 	Stream_Read_UINT32(irp->input, Length);
 	Stream_Seek(irp->input, 24); /* Padding */
-	file = drive_get_file_by_id(drive, irp->FileId);
 
+	file = drive_get_file_by_id(drive, irp->FileId);
 	if (!file)
 	{
 		irp->IoStatus = STATUS_UNSUCCESSFUL;
@@ -442,6 +454,9 @@ static UINT drive_process_irp_query_volume_information(DRIVE_DEVICE* drive,
 	if (!drive || !irp)
 		return ERROR_INVALID_PARAMETER;
 
+	if (Stream_GetRemainingLength(irp->input) < 4)
+		return ERROR_INVALID_DATA;
+
 	Stream_Read_UINT32(irp->input, FsInformationClass);
 	GetDiskFreeSpaceW(drive->path, &lpSectorsPerCluster, &lpBytesPerSector, &lpNumberOfFreeClusters,
 	                  &lpTotalNumberOfClusters);
@@ -574,7 +589,11 @@ static UINT drive_process_irp_silent_ignore(DRIVE_DEVICE* drive, IRP* irp)
 	if (!drive || !irp || !irp->output || !irp->Complete)
 		return ERROR_INVALID_PARAMETER;
 
+	if (Stream_GetRemainingLength(irp->input) < 4)
+		return ERROR_INVALID_DATA;
+
 	Stream_Read_UINT32(irp->input, FsInformationClass);
+
 	Stream_Write_UINT32(irp->output, 0); /* Length */
 	return irp->Complete(irp);
 }
@@ -595,13 +614,16 @@ static UINT drive_process_irp_query_directory(DRIVE_DEVICE* drive, IRP* irp)
 	if (!drive || !irp || !irp->Complete)
 		return ERROR_INVALID_PARAMETER;
 
+	if (Stream_GetRemainingLength(irp->input) < 32)
+		return ERROR_INVALID_DATA;
+
 	Stream_Read_UINT32(irp->input, FsInformationClass);
 	Stream_Read_UINT8(irp->input, InitialQuery);
 	Stream_Read_UINT32(irp->input, PathLength);
 	Stream_Seek(irp->input, 23); /* Padding */
 	path = (WCHAR*) Stream_Pointer(irp->input);
-	file = drive_get_file_by_id(drive, irp->FileId);
 
+	file = drive_get_file_by_id(drive, irp->FileId);
 	if (file == NULL)
 	{
 		irp->IoStatus = STATUS_UNSUCCESSFUL;
@@ -756,12 +778,14 @@ static void* drive_thread_func(void* arg)
 		irp = (IRP*) message.wParam;
 
 		if (irp)
+		{
 			if ((error = drive_process_irp(drive, irp)))
 			{
 				WLog_ERR(TAG, "drive_process_irp failed with error %"PRIu32"!", error);
 				break;
 			}
 		}
+	}
 
 fail:
 	if (error && drive->rdpcontext)

libfreerdp/core/channels.c

@@ -110,6 +110,7 @@ BOOL freerdp_channel_send(rdpRdp* rdp, UINT16 channelId, BYTE* data, int size)
 
 		Stream_Write(s, data, chunkSize);
 
+		WLog_DBG(TAG, "%s: sending data (flags=0x%x size=%d)", __FUNCTION__, flags, size);
 		if (!rdp_send(rdp, s, channelId))
 		{
 			Stream_Release(s);

libfreerdp/core/rdp.c

@@ -604,6 +604,7 @@ BOOL rdp_send_data_pdu(rdpRdp* rdp, wStream* s, BYTE type, UINT16 channel_id)
 	Stream_SetPosition(s, length);
 	Stream_SealLength(s);
 
+	WLog_DBG(TAG, "%s: sending data (type=0x%x size=%d channelId)", __FUNCTION__, type, Stream_Length(s), channel_id);
 	if (transport_write(rdp->transport, s) < 0)
 		return FALSE;
 
@@ -1224,6 +1225,7 @@ static int rdp_recv_tpkt_pdu(rdpRdp* rdp, wStream* s)
 				case PDU_TYPE_FLOW_RESPONSE:
 				case PDU_TYPE_FLOW_STOP:
 				case PDU_TYPE_FLOW_TEST:
+					WLog_DBG(TAG, "flow message 0x%04"PRIX16"", pduType);
 					break;
 
 				default:

libfreerdp/core/security.c

@@ -592,6 +592,7 @@ BOOL security_key_update(BYTE* key, BYTE* update_key, int key_len, rdpRdp* rdp)
 	BYTE salt[] = { 0xD1, 0x26, 0x9E }; /* 40 bits: 3 bytes, 56 bits: 1 byte */
 	BOOL result = FALSE;
 
+	WLog_DBG(TAG, "updating RDP key");
 	if (!(sha1 = winpr_Digest_New()))
 		goto out;
 	if (!winpr_Digest_Init(sha1, WINPR_MD_SHA1))

libfreerdp/core/update.c

@@ -562,6 +562,10 @@ BOOL update_recv(rdpUpdate* update, wStream* s)
 			update_read_synchronize(update, s);
 			IFCALL(update->Synchronize, context);
 			break;
+
+		default:
+			WLog_ERR(TAG, "unknown update type %"PRIu16"", updateType);
+			break;
 	}
 
 	IFCALL(update->EndPaint, context);