1 files changed, 124 insertions, 0 deletions
diff --git a/usb/driver/set_interface.c b/usb/driver/set_interface.c
new file mode 100644
index 0000000..840600e
--- /dev/null
+++ b/usb/driver/set_interface.c
@@ -0,0 +1,124 @@
+/* libusb-win32, Generic Windows USB Library
+ * Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "libusb_driver.h"
+
+
+NTSTATUS set_interface(libusb_device_t *dev,
+					   int interface_number, 
+					   int alt_interface_number,
+                       int timeout)
+{
+    NTSTATUS status = STATUS_SUCCESS;
+    URB *urb;
+    int i, tmp_size;
+
+    USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
+    USBD_INTERFACE_INFORMATION *interface_information = NULL;
+
+
+	USBMSG("interface-number=%d alt-number=%d timeout=%d\n", 
+		interface_number,alt_interface_number,timeout);
+
+	if (!dev->config.value || !dev->config.descriptor)
+    {
+        USBERR0("device is not configured\n");
+        return STATUS_INVALID_DEVICE_STATE;
+    }
+
+	interface_descriptor = find_interface_desc(dev->config.descriptor, dev->config.total_size, interface_number, alt_interface_number);
+
+	if (!interface_descriptor)
+    {
+		USBERR("interface-number=%d alt-number=%d does not exists.\n", 
+			interface_number,alt_interface_number,timeout);
+		
+		return STATUS_NO_MORE_ENTRIES;
+    }
+
+    tmp_size = sizeof(struct _URB_SELECT_INTERFACE) + interface_descriptor->bNumEndpoints * sizeof(USBD_PIPE_INFORMATION);
+
+    urb = ExAllocatePool(NonPagedPool, tmp_size);
+
+    if (!urb)
+    {
+        USBERR0("memory_allocation error\n");
+        return STATUS_NO_MEMORY;
+    }
+
+    memset(urb, 0, tmp_size);
+
+    urb->UrbHeader.Function = URB_FUNCTION_SELECT_INTERFACE;
+    urb->UrbHeader.Length = (USHORT)tmp_size;
+
+    urb->UrbSelectInterface.ConfigurationHandle = dev->config.handle;
+    urb->UrbSelectInterface.Interface.Length = sizeof(struct _USBD_INTERFACE_INFORMATION);
+    urb->UrbSelectInterface.Interface.NumberOfPipes = interface_descriptor->bNumEndpoints;
+    urb->UrbSelectInterface.Interface.Length += interface_descriptor->bNumEndpoints * sizeof(struct _USBD_PIPE_INFORMATION);
+
+    urb->UrbSelectInterface.Interface.InterfaceNumber = (UCHAR)interface_descriptor->bInterfaceNumber;
+    urb->UrbSelectInterface.Interface.AlternateSetting = (UCHAR)interface_descriptor->bAlternateSetting;
+
+    interface_information = &urb->UrbSelectInterface.Interface;
+
+    for (i = 0; i < interface_descriptor->bNumEndpoints; i++)
+    {
+        interface_information->Pipes[i].MaximumTransferSize = LIBUSB_MAX_READ_WRITE;
+    }
+
+    status = call_usbd(dev, urb, IOCTL_INTERNAL_USB_SUBMIT_URB, timeout);
+
+
+    if (!NT_SUCCESS(status) || !USBD_SUCCESS(urb->UrbHeader.Status))
+    {
+        USBERR("setting interface failed: status: 0x%x, urb-status: 0x%x\n", status, urb->UrbHeader.Status);
+        ExFreePool(urb);
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    update_pipe_info(dev, interface_information);
+
+    ExFreePool(urb);
+
+    return status;
+}
+
+NTSTATUS set_interface_ex(libusb_device_t *dev, 
+					   interface_request_t* interface_request, 
+                       int timeout)
+{
+    NTSTATUS status = STATUS_SUCCESS;
+
+    USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
+
+	USBMSG("interface-%s=%d alt-%s=%d timeout=%d\n",
+		interface_request->intf_use_index ? "index" : "number",
+		interface_request->intf_use_index ? interface_request->interface_index : interface_request->interface_number,
+		interface_request->altf_use_index ? "index" : "number",
+		interface_request->altf_use_index ? interface_request->altsetting_index : interface_request->altsetting_number,
+		timeout);
+
+	interface_descriptor = find_interface_desc_ex(dev->config.descriptor,dev->config.total_size,interface_request,NULL);
+	if (!interface_descriptor)
+	{
+        return STATUS_NO_MORE_ENTRIES;
+	}
+
+	return set_interface(dev,interface_descriptor->bInterfaceNumber, interface_descriptor->bAlternateSetting, timeout);
+}