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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:27:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:27:07 +0000
commite2e1a00b1595b4930b86e3ba3ea2e9b771a79653 (patch)
treeba77e3ac3992e0dbf8f751513b9015d37122a2b1 /usbhid-dump/src/iface.c
parentInitial commit. (diff)
downloadusbutils-e2e1a00b1595b4930b86e3ba3ea2e9b771a79653.tar.xz
usbutils-e2e1a00b1595b4930b86e3ba3ea2e9b771a79653.zip
Adding upstream version 1:014.upstream/1%014upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'usbhid-dump/src/iface.c')
-rw-r--r--usbhid-dump/src/iface.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/usbhid-dump/src/iface.c b/usbhid-dump/src/iface.c
new file mode 100644
index 0000000..7bcf28b
--- /dev/null
+++ b/usbhid-dump/src/iface.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * usbhid-dump - interface
+ *
+ * Copyright (C) 2010 Nikolai Kondrashov <spbnick@gmail.com>
+ */
+
+#include "config.h"
+
+#include "iface.h"
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+bool
+uhd_iface_valid(const uhd_iface *iface)
+{
+ return iface != NULL &&
+ uhd_dev_valid(iface->dev) &&
+ iface->number < UINT8_MAX &&
+ strlen(iface->addr_str) == (sizeof(iface->addr_str) - 1);
+}
+
+uhd_iface *
+uhd_iface_new(const uhd_dev *dev,
+ uint8_t number,
+ uint8_t int_in_ep_addr,
+ uint16_t int_in_ep_maxp,
+ uint16_t rd_len)
+{
+ uhd_iface *iface;
+ libusb_device *lusb_dev;
+ int rc;
+
+ iface = malloc(sizeof(*iface));
+ if (iface == NULL)
+ return NULL;
+
+ iface->next = NULL;
+ iface->dev = dev;
+ iface->number = number;
+ iface->int_in_ep_addr = int_in_ep_addr;
+ iface->int_in_ep_maxp = int_in_ep_maxp;
+ iface->rd_len = rd_len;
+ iface->detached = false;
+ iface->claimed = false;
+ iface->submitted = false;
+
+ /* Format address string */
+ lusb_dev = libusb_get_device(dev->handle);
+ rc = snprintf(iface->addr_str, sizeof(iface->addr_str),
+ "%.3hhu:%.3hhu:%.3hhu",
+ libusb_get_bus_number(lusb_dev),
+ libusb_get_device_address(lusb_dev),
+ number);
+ (void)rc;
+ assert(rc == (sizeof(iface->addr_str) - 1));
+
+ assert(uhd_iface_valid(iface));
+
+ return iface;
+}
+
+
+void
+uhd_iface_free(uhd_iface *iface)
+{
+ if (iface == NULL)
+ return;
+
+ assert(uhd_iface_valid(iface));
+
+ free(iface);
+}
+
+
+enum libusb_error
+uhd_iface_detach(uhd_iface *iface)
+{
+ enum libusb_error err;
+
+ assert(uhd_iface_valid(iface));
+
+ err = libusb_detach_kernel_driver(iface->dev->handle, iface->number);
+ if (err == LIBUSB_SUCCESS)
+ iface->detached = true;
+ else if (err != LIBUSB_ERROR_NOT_FOUND)
+ return err;
+
+ return LIBUSB_SUCCESS;
+}
+
+
+enum libusb_error
+uhd_iface_attach(uhd_iface *iface)
+{
+ enum libusb_error err;
+
+ assert(uhd_iface_valid(iface));
+
+ if (iface->detached)
+ {
+ err = libusb_attach_kernel_driver(iface->dev->handle,
+ iface->number);
+ if (err != LIBUSB_SUCCESS)
+ return err;
+ iface->detached = false;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+
+enum libusb_error
+uhd_iface_claim(uhd_iface *iface)
+{
+ enum libusb_error err;
+
+ assert(uhd_iface_valid(iface));
+
+ err = libusb_claim_interface(iface->dev->handle, iface->number);
+ if (err != LIBUSB_SUCCESS)
+ return err;
+
+ iface->claimed = true;
+
+ return LIBUSB_SUCCESS;
+}
+
+
+enum libusb_error
+uhd_iface_release(uhd_iface *iface)
+{
+ enum libusb_error err;
+
+ assert(uhd_iface_valid(iface));
+
+ err = libusb_release_interface(iface->dev->handle, iface->number);
+ if (err != LIBUSB_SUCCESS)
+ return err;
+
+ iface->claimed = false;
+
+ return LIBUSB_SUCCESS;
+}
+
+
+enum libusb_error
+uhd_iface_clear_halt(uhd_iface *iface)
+{
+ enum libusb_error err;
+
+ assert(uhd_iface_valid(iface));
+
+ err = libusb_clear_halt(iface->dev->handle, iface->int_in_ep_addr);
+ if (err != LIBUSB_SUCCESS)
+ return err;
+
+ return LIBUSB_SUCCESS;
+}
+
+
+enum libusb_error
+uhd_iface_set_idle(const uhd_iface *iface,
+ uint8_t duration,
+ unsigned int timeout)
+{
+ int rc;
+
+ assert(uhd_iface_valid(iface));
+
+ rc = libusb_control_transfer(iface->dev->handle,
+ /* host->device, class, interface */
+ 0x21,
+ /* Set_Idle */
+ 0x0A,
+ /* duration for all report IDs */
+ duration << 8,
+ /* interface */
+ iface->number,
+ NULL, 0,
+ timeout);
+ /*
+ * Ignoring EPIPE, which means a STALL handshake, which is OK on
+ * control pipes and indicates request is not supported.
+ * See USB 2.0 spec, 8.4.5 Handshake Packets
+ */
+ if (rc < 0 && rc != LIBUSB_ERROR_PIPE)
+ return rc;
+
+ return LIBUSB_SUCCESS;
+}
+
+
+enum libusb_error
+uhd_iface_set_protocol(const uhd_iface *iface,
+ bool report,
+ unsigned int timeout)
+{
+ int rc;
+
+ assert(uhd_iface_valid(iface));
+
+ rc = libusb_control_transfer(iface->dev->handle,
+ /* host->device, class, interface */
+ 0x21,
+ /* Set_Protocol */
+ 0x0B,
+ /* 0 - boot, 1 - report */
+ report ? 1 : 0,
+ /* interface */
+ iface->number,
+ NULL, 0,
+ timeout);
+ /*
+ * Ignoring EPIPE, which means a STALL handshake, which is OK on
+ * control pipes and indicates request is not supported.
+ * See USB 2.0 spec, 8.4.5 Handshake Packets
+ */
+ if (rc < 0 && rc != LIBUSB_ERROR_PIPE)
+ return rc;
+
+ return LIBUSB_SUCCESS;
+}
+
+