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-rw-r--r--usb/driver/set_configuration.c205
1 files changed, 205 insertions, 0 deletions
diff --git a/usb/driver/set_configuration.c b/usb/driver/set_configuration.c
new file mode 100644
index 0000000..9f2fac1
--- /dev/null
+++ b/usb/driver/set_configuration.c
@@ -0,0 +1,205 @@
+/* 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"
+#include <stdlib.h>
+
+
+NTSTATUS set_configuration(libusb_device_t *dev,
+ int configuration,
+ int timeout)
+{
+ NTSTATUS status = STATUS_SUCCESS;
+ URB urb, *urb_ptr = NULL;
+ USB_CONFIGURATION_DESCRIPTOR *configuration_descriptor = NULL;
+ USB_INTERFACE_DESCRIPTOR *interface_descriptor = NULL;
+ USBD_INTERFACE_LIST_ENTRY *interfaces = NULL;
+ int i, j, interface_number, desc_size, config_index, ret;
+
+ // check if this config value is already set
+ if ((configuration > 0) && dev->config.value == configuration)
+ {
+ return STATUS_SUCCESS;
+ }
+
+ // check if this config index is already set
+ if ((configuration < 0) && dev->config.value && dev->config.index == (abs(configuration)-1))
+ {
+ return STATUS_SUCCESS;
+ }
+
+ memset(&urb, 0, sizeof(URB));
+
+ if (configuration == 0)
+ {
+ urb.UrbHeader.Function = URB_FUNCTION_SELECT_CONFIGURATION;
+ urb.UrbHeader.Length = sizeof(struct _URB_SELECT_CONFIGURATION);
+
+ status = call_usbd(dev, &urb, IOCTL_INTERNAL_USB_SUBMIT_URB, timeout);
+
+ if (!NT_SUCCESS(status) || !USBD_SUCCESS(urb.UrbHeader.Status))
+ {
+ USBERR("setting configuration %d failed: status: 0x%x, urb-status: 0x%x\n",
+ configuration, status, urb.UrbHeader.Status);
+ return status;
+ }
+
+ dev->config.handle = urb.UrbSelectConfiguration.ConfigurationHandle;
+ dev->config.value = 0;
+
+ clear_pipe_info(dev);
+
+ return status;
+ }
+
+ if (configuration <= SET_CONFIG_ACTIVE_CONFIG)
+ {
+ // note: as of v1.2.4.0, the active/default configuration is
+ // always the first configuration the device returns. (index 0)
+ configuration=-1;
+ }
+
+ USBMSG("setting configuration %s %d timeout=%d",
+ (configuration < 0) ? "index" : "value",
+ (configuration < 0) ? abs(configuration) - 1 : configuration,
+ timeout);
+
+
+ // If configuration is negative, it is retrieved by index.
+ //
+ configuration_descriptor = get_config_descriptor(dev, configuration,
+ &desc_size, &config_index);
+ if (!configuration_descriptor)
+ {
+ USBERR0("getting configuration descriptor failed");
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ // if we passed an index in we can check here to see
+ // if the device is already configured with this value
+ if (dev->config.value == configuration_descriptor->bConfigurationValue)
+ {
+ UpdateContextConfigDescriptor(
+ dev,
+ configuration_descriptor,
+ desc_size,
+ configuration_descriptor->bConfigurationValue,
+ config_index);
+
+ status = STATUS_SUCCESS;
+ goto SetConfigurationDone;
+ }
+
+ // MEMORY ALLOCATION BEGINS
+ interfaces =
+ ExAllocatePool(NonPagedPool,(configuration_descriptor->bNumInterfaces + 1)
+ * sizeof(USBD_INTERFACE_LIST_ENTRY));
+
+ if (!interfaces)
+ {
+ USBERR0("memory allocation failed\n");
+ status = STATUS_NO_MEMORY;
+ ExFreePool(configuration_descriptor);
+ goto SetConfigurationDone;
+ }
+
+ memset(interfaces, 0, (configuration_descriptor->bNumInterfaces + 1)
+ * sizeof(USBD_INTERFACE_LIST_ENTRY));
+
+ interface_number = 0;
+
+ for (i = 0; i < configuration_descriptor->bNumInterfaces; i++)
+ {
+ for (j = interface_number; j < LIBUSB_MAX_NUMBER_OF_INTERFACES; j++)
+ {
+ interface_descriptor =
+ find_interface_desc(configuration_descriptor, desc_size, j, 0);
+ if (interface_descriptor)
+ {
+ interface_number = ++j;
+ break;
+ }
+ }
+
+ if (!interface_descriptor)
+ {
+ USBERR("unable to find interface descriptor at index %d\n", i);
+ status = STATUS_INVALID_PARAMETER;
+ ExFreePool(configuration_descriptor);
+ goto SetConfigurationDone;
+ }
+ else
+ {
+ USBMSG("found interface %d\n",
+ interface_descriptor->bInterfaceNumber);
+ interfaces[i].InterfaceDescriptor = interface_descriptor;
+ }
+ }
+
+ urb_ptr = USBD_CreateConfigurationRequestEx(configuration_descriptor, interfaces);
+ if (!urb_ptr)
+ {
+ USBERR0("memory allocation failed\n");
+ status = STATUS_NO_MEMORY;
+ ExFreePool(configuration_descriptor);
+ goto SetConfigurationDone;
+ }
+
+ for (i = 0; i < configuration_descriptor->bNumInterfaces; i++)
+ {
+ for (j = 0; j < (int)interfaces[i].Interface->NumberOfPipes; j++)
+ {
+ interfaces[i].Interface->Pipes[j].MaximumTransferSize = LIBUSB_MAX_READ_WRITE;
+ }
+ }
+
+ USBDBG("#%d %s passing configuration request to target-device.",
+ dev->id, dev->device_id);
+
+ status = call_usbd(dev, urb_ptr, IOCTL_INTERNAL_USB_SUBMIT_URB, timeout);
+
+ if (!NT_SUCCESS(status) || !USBD_SUCCESS(urb_ptr->UrbHeader.Status))
+ {
+ USBERR("setting configuration %d failed: status: 0x%x, urb-status: 0x%x\n",
+ configuration, status, urb_ptr->UrbHeader.Status);
+ if (NT_SUCCESS(status)) status = urb_ptr->UrbHeader.Status;
+
+ ExFreePool(configuration_descriptor);
+ goto SetConfigurationDone;
+ }
+
+ dev->config.handle = urb_ptr->UrbSelectConfiguration.ConfigurationHandle;
+
+ clear_pipe_info(dev);
+
+ for (i = 0; i < configuration_descriptor->bNumInterfaces; i++)
+ {
+ update_pipe_info(dev, interfaces[i].Interface);
+ }
+ UpdateContextConfigDescriptor(dev, configuration_descriptor, desc_size, configuration_descriptor->bConfigurationValue, config_index);
+
+SetConfigurationDone:
+ if (interfaces)
+ ExFreePool(interfaces);
+
+ if (urb_ptr)
+ ExFreePool(urb_ptr);
+
+ return status;
+}