| /* -*- Mode: C; indent-tabs-mode:nil -*- */ |
| /* |
| * darwin backend for libusb 1.0 |
| * Copyright © 2008-2021 Nathan Hjelm <hjelmn@cs.unm.edu> |
| * Copyright © 2019-2021 Google LLC. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <config.h> |
| #include <assert.h> |
| #include <time.h> |
| #include <ctype.h> |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/sysctl.h> |
| |
| #include <mach/clock.h> |
| #include <mach/clock_types.h> |
| #include <mach/mach_host.h> |
| #include <mach/mach_port.h> |
| |
| /* Suppress warnings about the use of the deprecated objc_registerThreadWithCollector |
| * function. Its use is also conditionalized to only older deployment targets. */ |
| #define OBJC_SILENCE_GC_DEPRECATIONS 1 |
| |
| /* Default timeout to 10s for reenumerate. This is needed because USBDeviceReEnumerate |
| * does not return error status on macOS. */ |
| #define DARWIN_REENUMERATE_TIMEOUT_US 10000000 |
| |
| #include <AvailabilityMacros.h> |
| #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200 |
| #include <objc/objc-auto.h> |
| #endif |
| |
| #include "darwin_usb.h" |
| |
| static int init_count = 0; |
| |
| /* Both kIOMasterPortDefault or kIOMainPortDefault are synonyms for 0. */ |
| static const mach_port_t darwin_default_master_port = 0; |
| |
| /* async event thread */ |
| static pthread_mutex_t libusb_darwin_at_mutex = PTHREAD_MUTEX_INITIALIZER; |
| static pthread_cond_t libusb_darwin_at_cond = PTHREAD_COND_INITIALIZER; |
| |
| #if !defined(HAVE_CLOCK_GETTIME) |
| static clock_serv_t clock_realtime; |
| static clock_serv_t clock_monotonic; |
| #endif |
| |
| #define LIBUSB_DARWIN_STARTUP_FAILURE ((CFRunLoopRef) -1) |
| |
| static CFRunLoopRef libusb_darwin_acfl = NULL; /* event cf loop */ |
| static CFRunLoopSourceRef libusb_darwin_acfls = NULL; /* shutdown signal for event cf loop */ |
| |
| static usbi_mutex_t darwin_cached_devices_lock = PTHREAD_MUTEX_INITIALIZER; |
| static struct list_head darwin_cached_devices; |
| static const char *darwin_device_class = "IOUSBDevice"; |
| |
| #define DARWIN_CACHED_DEVICE(a) (((struct darwin_device_priv *)usbi_get_device_priv((a)))->dev) |
| |
| /* async event thread */ |
| static pthread_t libusb_darwin_at; |
| |
| static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, void *buffer, size_t len); |
| static int darwin_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface); |
| static int darwin_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface); |
| static int darwin_reenumerate_device(struct libusb_device_handle *dev_handle, bool capture); |
| static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint); |
| static int darwin_reset_device(struct libusb_device_handle *dev_handle); |
| static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0); |
| |
| static enum libusb_error darwin_scan_devices(struct libusb_context *ctx); |
| static enum libusb_error process_new_device (struct libusb_context *ctx, struct darwin_cached_device *cached_device, |
| UInt64 old_session_id); |
| |
| static enum libusb_error darwin_get_cached_device(struct libusb_context *ctx, io_service_t service, struct darwin_cached_device **cached_out, |
| UInt64 *old_session_id); |
| |
| #if defined(ENABLE_LOGGING) |
| static const char *darwin_error_str (IOReturn result) { |
| static char string_buffer[50]; |
| switch (result) { |
| case kIOReturnSuccess: |
| return "no error"; |
| case kIOReturnNotOpen: |
| return "device not opened for exclusive access"; |
| case kIOReturnNoDevice: |
| return "no connection to an IOService"; |
| case kIOUSBNoAsyncPortErr: |
| return "no async port has been opened for interface"; |
| case kIOReturnExclusiveAccess: |
| return "another process has device opened for exclusive access"; |
| case kIOUSBPipeStalled: |
| #if defined(kUSBHostReturnPipeStalled) |
| case kUSBHostReturnPipeStalled: |
| #endif |
| return "pipe is stalled"; |
| case kIOReturnError: |
| return "could not establish a connection to the Darwin kernel"; |
| case kIOUSBTransactionTimeout: |
| return "transaction timed out"; |
| case kIOReturnBadArgument: |
| return "invalid argument"; |
| case kIOReturnAborted: |
| return "transaction aborted"; |
| case kIOReturnNotResponding: |
| return "device not responding"; |
| case kIOReturnOverrun: |
| return "data overrun"; |
| case kIOReturnCannotWire: |
| return "physical memory can not be wired down"; |
| case kIOReturnNoResources: |
| return "out of resources"; |
| case kIOUSBHighSpeedSplitError: |
| return "high speed split error"; |
| case kIOUSBUnknownPipeErr: |
| return "pipe ref not recognized"; |
| default: |
| snprintf(string_buffer, sizeof(string_buffer), "unknown error (0x%x)", result); |
| return string_buffer; |
| } |
| } |
| #endif |
| |
| static enum libusb_error darwin_to_libusb (IOReturn result) { |
| switch (result) { |
| case kIOReturnUnderrun: |
| case kIOReturnSuccess: |
| return LIBUSB_SUCCESS; |
| case kIOReturnNotOpen: |
| case kIOReturnNoDevice: |
| return LIBUSB_ERROR_NO_DEVICE; |
| case kIOReturnExclusiveAccess: |
| return LIBUSB_ERROR_ACCESS; |
| case kIOUSBPipeStalled: |
| #if defined(kUSBHostReturnPipeStalled) |
| case kUSBHostReturnPipeStalled: |
| #endif |
| return LIBUSB_ERROR_PIPE; |
| case kIOReturnBadArgument: |
| return LIBUSB_ERROR_INVALID_PARAM; |
| case kIOUSBTransactionTimeout: |
| return LIBUSB_ERROR_TIMEOUT; |
| case kIOUSBUnknownPipeErr: |
| return LIBUSB_ERROR_NOT_FOUND; |
| case kIOReturnNotResponding: |
| case kIOReturnAborted: |
| case kIOReturnError: |
| case kIOUSBNoAsyncPortErr: |
| default: |
| return LIBUSB_ERROR_OTHER; |
| } |
| } |
| |
| /* this function must be called with the darwin_cached_devices_lock held */ |
| static void darwin_deref_cached_device(struct darwin_cached_device *cached_dev) { |
| cached_dev->refcount--; |
| /* free the device and remove it from the cache */ |
| if (0 == cached_dev->refcount) { |
| list_del(&cached_dev->list); |
| |
| if (cached_dev->device) { |
| (*(cached_dev->device))->Release(cached_dev->device); |
| cached_dev->device = NULL; |
| } |
| IOObjectRelease (cached_dev->service); |
| free (cached_dev); |
| } |
| } |
| |
| static void darwin_ref_cached_device(struct darwin_cached_device *cached_dev) { |
| cached_dev->refcount++; |
| } |
| |
| static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp, struct darwin_interface **interface_out) { |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| |
| /* current interface */ |
| struct darwin_interface *cInterface; |
| |
| uint8_t i, iface; |
| |
| struct libusb_context *ctx = HANDLE_CTX(dev_handle); |
| |
| usbi_dbg (ctx, "converting ep address 0x%02x to pipeRef and interface", ep); |
| |
| for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) { |
| cInterface = &priv->interfaces[iface]; |
| |
| if (dev_handle->claimed_interfaces & (1U << iface)) { |
| for (i = 0 ; i < cInterface->num_endpoints ; i++) { |
| if (cInterface->endpoint_addrs[i] == ep) { |
| *pipep = i + 1; |
| |
| if (ifcp) |
| *ifcp = iface; |
| |
| if (interface_out) |
| *interface_out = cInterface; |
| |
| usbi_dbg (ctx, "pipe %d on interface %d matches", *pipep, iface); |
| return LIBUSB_SUCCESS; |
| } |
| } |
| } |
| } |
| |
| /* No pipe found with the correct endpoint address */ |
| usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| static IOReturn usb_setup_device_iterator (io_iterator_t *deviceIterator, UInt32 location) { |
| CFMutableDictionaryRef matchingDict = IOServiceMatching(darwin_device_class); |
| |
| if (!matchingDict) |
| return kIOReturnError; |
| |
| if (location) { |
| CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, |
| &kCFTypeDictionaryKeyCallBacks, |
| &kCFTypeDictionaryValueCallBacks); |
| |
| /* there are no unsigned CFNumber types so treat the value as signed. the OS seems to do this |
| internally (CFNumberType of locationID is kCFNumberSInt32Type) */ |
| CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberSInt32Type, &location); |
| |
| if (propertyMatchDict && locationCF) { |
| CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF); |
| CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict); |
| } |
| /* else we can still proceed as long as the caller accounts for the possibility of other devices in the iterator */ |
| |
| /* release our references as per the Create Rule */ |
| if (propertyMatchDict) |
| CFRelease (propertyMatchDict); |
| if (locationCF) |
| CFRelease (locationCF); |
| } |
| |
| return IOServiceGetMatchingServices(darwin_default_master_port, matchingDict, deviceIterator); |
| } |
| |
| /* Returns 1 on success, 0 on failure. */ |
| static bool get_ioregistry_value_number (io_service_t service, CFStringRef property, CFNumberType type, void *p) { |
| CFTypeRef cfNumber = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0); |
| Boolean success = 0; |
| |
| if (cfNumber) { |
| if (CFGetTypeID(cfNumber) == CFNumberGetTypeID()) { |
| success = CFNumberGetValue(cfNumber, type, p); |
| } |
| |
| CFRelease (cfNumber); |
| } |
| |
| return (success != 0); |
| } |
| |
| /* Returns 1 on success, 0 on failure. */ |
| static bool get_ioregistry_value_data (io_service_t service, CFStringRef property, ssize_t size, void *p) { |
| CFTypeRef cfData = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0); |
| bool success = false; |
| |
| if (cfData) { |
| if (CFGetTypeID (cfData) == CFDataGetTypeID ()) { |
| CFIndex length = CFDataGetLength (cfData); |
| if (length < size) { |
| size = length; |
| } |
| |
| CFDataGetBytes (cfData, CFRangeMake(0, size), p); |
| success = true; |
| } |
| |
| CFRelease (cfData); |
| } |
| |
| return success; |
| } |
| |
| static usb_device_t **darwin_device_from_service (struct libusb_context *ctx, io_service_t service) |
| { |
| io_cf_plugin_ref_t *plugInInterface = NULL; |
| usb_device_t **device; |
| IOReturn kresult; |
| SInt32 score; |
| const int max_retries = 5; |
| |
| /* The IOCreatePlugInInterfaceForService function might consistently return |
| an "out of resources" error with certain USB devices the first time we run |
| it. The reason is still unclear, but retrying fixes the problem */ |
| for (int count = 0; count < max_retries; count++) { |
| kresult = IOCreatePlugInInterfaceForService(service, kIOUSBDeviceUserClientTypeID, |
| kIOCFPlugInInterfaceID, &plugInInterface, |
| &score); |
| if (kIOReturnSuccess == kresult && plugInInterface) { |
| break; |
| } |
| |
| usbi_dbg (ctx, "set up plugin for service retry: %s", darwin_error_str (kresult)); |
| |
| /* sleep for a little while before trying again */ |
| nanosleep(&(struct timespec){.tv_sec = 0, .tv_nsec = 1000}, NULL); |
| } |
| |
| if (kIOReturnSuccess != kresult || !plugInInterface) { |
| usbi_dbg (ctx, "could not set up plugin for service: %s", darwin_error_str (kresult)); |
| return NULL; |
| } |
| |
| (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID), |
| (LPVOID)&device); |
| /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */ |
| (*plugInInterface)->Release (plugInInterface); |
| |
| return device; |
| } |
| |
| static void darwin_devices_attached (void *ptr, io_iterator_t add_devices) { |
| UNUSED(ptr); |
| struct darwin_cached_device *cached_device; |
| UInt64 old_session_id; |
| struct libusb_context *ctx; |
| io_service_t service; |
| int ret; |
| |
| usbi_mutex_lock(&active_contexts_lock); |
| |
| while ((service = IOIteratorNext(add_devices))) { |
| ret = darwin_get_cached_device (NULL, service, &cached_device, &old_session_id); |
| if (ret < 0 || !cached_device->can_enumerate) { |
| continue; |
| } |
| |
| /* add this device to each active context's device list */ |
| for_each_context(ctx) { |
| process_new_device (ctx, cached_device, old_session_id); |
| } |
| |
| if (cached_device->in_reenumerate) { |
| usbi_dbg (NULL, "cached device in reset state. reset complete..."); |
| cached_device->in_reenumerate = false; |
| } |
| |
| IOObjectRelease(service); |
| } |
| |
| usbi_mutex_unlock(&active_contexts_lock); |
| } |
| |
| static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) { |
| UNUSED(ptr); |
| struct libusb_device *dev = NULL; |
| struct libusb_context *ctx; |
| struct darwin_cached_device *old_device; |
| |
| io_service_t device; |
| UInt64 session, locationID; |
| int ret; |
| |
| usbi_mutex_lock(&active_contexts_lock); |
| |
| while ((device = IOIteratorNext (rem_devices)) != 0) { |
| bool is_reenumerating = false; |
| |
| /* get the location from the i/o registry */ |
| ret = get_ioregistry_value_number (device, CFSTR("sessionID"), kCFNumberSInt64Type, &session); |
| (void) get_ioregistry_value_number (device, CFSTR("locationID"), kCFNumberSInt32Type, &locationID); |
| IOObjectRelease (device); |
| if (!ret) |
| continue; |
| |
| /* we need to match darwin_ref_cached_device call made in darwin_get_cached_device function |
| otherwise no cached device will ever get freed */ |
| usbi_mutex_lock(&darwin_cached_devices_lock); |
| list_for_each_entry(old_device, &darwin_cached_devices, list, struct darwin_cached_device) { |
| if (old_device->session == session) { |
| if (old_device->in_reenumerate) { |
| /* device is re-enumerating. do not dereference the device at this time. libusb_reset_device() |
| * will deref if needed. */ |
| usbi_dbg (NULL, "detected device detached due to re-enumeration. sessionID: 0x%" PRIx64 ", locationID: 0x%" PRIx64, |
| session, locationID); |
| |
| /* the device object is no longer usable so go ahead and release it */ |
| if (old_device->device) { |
| (*(old_device->device))->Release(old_device->device); |
| old_device->device = NULL; |
| } |
| |
| is_reenumerating = true; |
| } else { |
| darwin_deref_cached_device (old_device); |
| } |
| |
| break; |
| } |
| } |
| |
| usbi_mutex_unlock(&darwin_cached_devices_lock); |
| if (is_reenumerating) { |
| continue; |
| } |
| |
| for_each_context(ctx) { |
| usbi_dbg (ctx, "notifying context %p of device disconnect", ctx); |
| |
| dev = usbi_get_device_by_session_id(ctx, (unsigned long) session); |
| if (dev) { |
| /* signal the core that this device has been disconnected. the core will tear down this device |
| when the reference count reaches 0 */ |
| usbi_disconnect_device(dev); |
| libusb_unref_device(dev); |
| } |
| } |
| } |
| |
| usbi_mutex_unlock(&active_contexts_lock); |
| } |
| |
| static void darwin_hotplug_poll (void) |
| { |
| /* not sure if 1 ms will be too long/short but it should work ok */ |
| mach_timespec_t timeout = {.tv_sec = 0, .tv_nsec = 1000000ul}; |
| |
| /* since a kernel thread may notify the IOIterators used for |
| * hotplug notification we can't just clear the iterators. |
| * instead just wait until all IOService providers are quiet */ |
| (void) IOKitWaitQuiet (darwin_default_master_port, &timeout); |
| } |
| |
| static void darwin_clear_iterator (io_iterator_t iter) { |
| io_service_t device; |
| |
| while ((device = IOIteratorNext (iter)) != 0) |
| IOObjectRelease (device); |
| } |
| |
| static void darwin_fail_startup(void) { |
| pthread_mutex_lock (&libusb_darwin_at_mutex); |
| libusb_darwin_acfl = LIBUSB_DARWIN_STARTUP_FAILURE; |
| pthread_cond_signal (&libusb_darwin_at_cond); |
| pthread_mutex_unlock (&libusb_darwin_at_mutex); |
| pthread_exit (NULL); |
| } |
| |
| static void *darwin_event_thread_main (void *arg0) { |
| IOReturn kresult; |
| struct libusb_context *ctx = (struct libusb_context *)arg0; |
| CFRunLoopRef runloop; |
| CFRunLoopSourceRef libusb_shutdown_cfsource; |
| CFRunLoopSourceContext libusb_shutdown_cfsourcectx; |
| |
| #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 |
| /* Set this thread's name, so it can be seen in the debugger |
| and crash reports. */ |
| pthread_setname_np ("org.libusb.device-hotplug"); |
| #endif |
| |
| #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200 |
| /* Tell the Objective-C garbage collector about this thread. |
| This is required because, unlike NSThreads, pthreads are |
| not automatically registered. Although we don't use |
| Objective-C, we use CoreFoundation, which does. |
| Garbage collection support was entirely removed in 10.12, |
| so don't bother there. */ |
| objc_registerThreadWithCollector(); |
| #endif |
| |
| /* hotplug (device arrival/removal) sources */ |
| CFRunLoopSourceRef libusb_notification_cfsource; |
| io_notification_port_t libusb_notification_port; |
| io_iterator_t libusb_rem_device_iterator; |
| io_iterator_t libusb_add_device_iterator; |
| |
| usbi_dbg (ctx, "creating hotplug event source"); |
| |
| runloop = CFRunLoopGetCurrent (); |
| CFRetain (runloop); |
| |
| /* add the shutdown cfsource to the run loop */ |
| memset(&libusb_shutdown_cfsourcectx, 0, sizeof(libusb_shutdown_cfsourcectx)); |
| libusb_shutdown_cfsourcectx.info = runloop; |
| libusb_shutdown_cfsourcectx.perform = (void (*)(void *))CFRunLoopStop; |
| libusb_shutdown_cfsource = CFRunLoopSourceCreate(NULL, 0, &libusb_shutdown_cfsourcectx); |
| CFRunLoopAddSource(runloop, libusb_shutdown_cfsource, kCFRunLoopDefaultMode); |
| |
| /* add the notification port to the run loop */ |
| libusb_notification_port = IONotificationPortCreate (darwin_default_master_port); |
| libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port); |
| CFRunLoopAddSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode); |
| |
| /* create notifications for removed devices */ |
| kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification, |
| IOServiceMatching(darwin_device_class), |
| darwin_devices_detached, |
| ctx, &libusb_rem_device_iterator); |
| |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult)); |
| CFRelease (libusb_shutdown_cfsource); |
| CFRelease (runloop); |
| darwin_fail_startup (); |
| } |
| |
| /* create notifications for attached devices */ |
| kresult = IOServiceAddMatchingNotification(libusb_notification_port, kIOFirstMatchNotification, |
| IOServiceMatching(darwin_device_class), |
| darwin_devices_attached, |
| ctx, &libusb_add_device_iterator); |
| |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult)); |
| CFRelease (libusb_shutdown_cfsource); |
| CFRelease (runloop); |
| darwin_fail_startup (); |
| } |
| |
| /* arm notifiers */ |
| darwin_clear_iterator (libusb_rem_device_iterator); |
| darwin_clear_iterator (libusb_add_device_iterator); |
| |
| usbi_dbg (ctx, "darwin event thread ready to receive events"); |
| |
| /* signal the main thread that the hotplug runloop has been created. */ |
| pthread_mutex_lock (&libusb_darwin_at_mutex); |
| libusb_darwin_acfl = runloop; |
| libusb_darwin_acfls = libusb_shutdown_cfsource; |
| pthread_cond_signal (&libusb_darwin_at_cond); |
| pthread_mutex_unlock (&libusb_darwin_at_mutex); |
| |
| /* run the runloop */ |
| CFRunLoopRun(); |
| |
| usbi_dbg (ctx, "darwin event thread exiting"); |
| |
| /* signal the main thread that the hotplug runloop has finished. */ |
| pthread_mutex_lock (&libusb_darwin_at_mutex); |
| libusb_darwin_acfls = NULL; |
| libusb_darwin_acfl = NULL; |
| pthread_cond_signal (&libusb_darwin_at_cond); |
| pthread_mutex_unlock (&libusb_darwin_at_mutex); |
| |
| /* remove the notification cfsource */ |
| CFRunLoopRemoveSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode); |
| |
| /* remove the shutdown cfsource */ |
| CFRunLoopRemoveSource(runloop, libusb_shutdown_cfsource, kCFRunLoopDefaultMode); |
| |
| /* delete notification port */ |
| IONotificationPortDestroy (libusb_notification_port); |
| |
| /* delete iterators */ |
| IOObjectRelease (libusb_rem_device_iterator); |
| IOObjectRelease (libusb_add_device_iterator); |
| |
| CFRelease (libusb_shutdown_cfsource); |
| CFRelease (runloop); |
| |
| pthread_exit (NULL); |
| } |
| |
| /* cleanup function to destroy cached devices */ |
| static void darwin_cleanup_devices(void) { |
| struct darwin_cached_device *dev, *next; |
| |
| list_for_each_entry_safe(dev, next, &darwin_cached_devices, list, struct darwin_cached_device) { |
| darwin_deref_cached_device(dev); |
| } |
| } |
| |
| static int darwin_init(struct libusb_context *ctx) { |
| bool first_init; |
| int rc; |
| |
| first_init = (1 == ++init_count); |
| |
| do { |
| if (first_init) { |
| if (NULL == darwin_cached_devices.next) { |
| list_init (&darwin_cached_devices); |
| } |
| assert(list_empty(&darwin_cached_devices)); |
| #if !defined(HAVE_CLOCK_GETTIME) |
| /* create the clocks that will be used if clock_gettime() is not available */ |
| host_name_port_t host_self; |
| |
| host_self = mach_host_self(); |
| host_get_clock_service(host_self, CALENDAR_CLOCK, &clock_realtime); |
| host_get_clock_service(host_self, SYSTEM_CLOCK, &clock_monotonic); |
| mach_port_deallocate(mach_task_self(), host_self); |
| #endif |
| } |
| |
| rc = darwin_scan_devices (ctx); |
| if (LIBUSB_SUCCESS != rc) |
| break; |
| |
| if (first_init) { |
| rc = pthread_create (&libusb_darwin_at, NULL, darwin_event_thread_main, ctx); |
| if (0 != rc) { |
| usbi_err (ctx, "could not create event thread, error %d", rc); |
| rc = LIBUSB_ERROR_OTHER; |
| break; |
| } |
| |
| pthread_mutex_lock (&libusb_darwin_at_mutex); |
| while (!libusb_darwin_acfl) |
| pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex); |
| if (libusb_darwin_acfl == LIBUSB_DARWIN_STARTUP_FAILURE) { |
| libusb_darwin_acfl = NULL; |
| rc = LIBUSB_ERROR_OTHER; |
| } |
| pthread_mutex_unlock (&libusb_darwin_at_mutex); |
| |
| if (0 != rc) |
| pthread_join (libusb_darwin_at, NULL); |
| } |
| } while (0); |
| |
| if (LIBUSB_SUCCESS != rc) { |
| if (first_init) { |
| darwin_cleanup_devices (); |
| #if !defined(HAVE_CLOCK_GETTIME) |
| mach_port_deallocate(mach_task_self(), clock_realtime); |
| mach_port_deallocate(mach_task_self(), clock_monotonic); |
| #endif |
| } |
| --init_count; |
| } |
| |
| return rc; |
| } |
| |
| static void darwin_exit (struct libusb_context *ctx) { |
| UNUSED(ctx); |
| |
| if (0 == --init_count) { |
| /* stop the event runloop and wait for the thread to terminate. */ |
| pthread_mutex_lock (&libusb_darwin_at_mutex); |
| CFRunLoopSourceSignal (libusb_darwin_acfls); |
| CFRunLoopWakeUp (libusb_darwin_acfl); |
| while (libusb_darwin_acfl) |
| pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex); |
| pthread_mutex_unlock (&libusb_darwin_at_mutex); |
| pthread_join (libusb_darwin_at, NULL); |
| |
| darwin_cleanup_devices (); |
| |
| #if !defined(HAVE_CLOCK_GETTIME) |
| mach_port_deallocate(mach_task_self(), clock_realtime); |
| mach_port_deallocate(mach_task_self(), clock_monotonic); |
| #endif |
| } |
| } |
| |
| static int get_configuration_index (struct libusb_device *dev, UInt8 config_value) { |
| struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); |
| UInt8 i, numConfig; |
| IOUSBConfigurationDescriptorPtr desc; |
| IOReturn kresult; |
| |
| /* is there a simpler way to determine the index? */ |
| kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig); |
| if (kresult != kIOReturnSuccess) |
| return darwin_to_libusb (kresult); |
| |
| for (i = 0 ; i < numConfig ; i++) { |
| (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc); |
| |
| if (desc->bConfigurationValue == config_value) |
| return i; |
| } |
| |
| /* configuration not found */ |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| static int darwin_get_active_config_descriptor(struct libusb_device *dev, void *buffer, size_t len) { |
| struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); |
| int config_index; |
| |
| if (0 == priv->active_config) |
| return LIBUSB_ERROR_NOT_FOUND; |
| |
| config_index = get_configuration_index (dev, priv->active_config); |
| if (config_index < 0) |
| return config_index; |
| |
| assert(config_index >= 0 && config_index <= UINT8_MAX); |
| return darwin_get_config_descriptor (dev, (UInt8)config_index, buffer, len); |
| } |
| |
| static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, void *buffer, size_t len) { |
| struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); |
| IOUSBConfigurationDescriptorPtr desc; |
| IOReturn kresult; |
| int ret; |
| |
| if (!priv || !priv->device) |
| return LIBUSB_ERROR_OTHER; |
| |
| kresult = (*priv->device)->GetConfigurationDescriptorPtr (priv->device, config_index, &desc); |
| if (kresult == kIOReturnSuccess) { |
| /* copy descriptor */ |
| if (libusb_le16_to_cpu(desc->wTotalLength) < len) |
| len = libusb_le16_to_cpu(desc->wTotalLength); |
| |
| memmove (buffer, desc, len); |
| } |
| |
| ret = darwin_to_libusb (kresult); |
| if (ret != LIBUSB_SUCCESS) |
| return ret; |
| |
| return (int) len; |
| } |
| |
| /* check whether the os has configured the device */ |
| static enum libusb_error darwin_check_configuration (struct libusb_context *ctx, struct darwin_cached_device *dev) { |
| usb_device_t **darwin_device = dev->device; |
| |
| IOUSBConfigurationDescriptorPtr configDesc; |
| IOUSBFindInterfaceRequest request; |
| IOReturn kresult; |
| io_iterator_t interface_iterator; |
| io_service_t firstInterface; |
| |
| if (dev->dev_descriptor.bNumConfigurations < 1) { |
| usbi_err (ctx, "device has no configurations"); |
| return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */ |
| } |
| |
| /* checking the configuration of a root hub simulation takes ~1 s in 10.11. the device is |
| not usable anyway */ |
| if (0x05ac == libusb_le16_to_cpu (dev->dev_descriptor.idVendor) && |
| 0x8005 == libusb_le16_to_cpu (dev->dev_descriptor.idProduct)) { |
| usbi_dbg (ctx, "ignoring configuration on root hub simulation"); |
| dev->active_config = 0; |
| return LIBUSB_SUCCESS; |
| } |
| |
| /* find the first configuration */ |
| kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc); |
| dev->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1; |
| |
| /* check if the device is already configured. there is probably a better way than iterating over the |
| to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices |
| might lock up on the device request) */ |
| |
| /* Setup the Interface Request */ |
| request.bInterfaceClass = kIOUSBFindInterfaceDontCare; |
| request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; |
| request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; |
| request.bAlternateSetting = kIOUSBFindInterfaceDontCare; |
| |
| kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator); |
| if (kresult != kIOReturnSuccess) |
| return darwin_to_libusb (kresult); |
| |
| /* iterate once */ |
| firstInterface = IOIteratorNext(interface_iterator); |
| |
| /* done with the interface iterator */ |
| IOObjectRelease(interface_iterator); |
| |
| if (firstInterface) { |
| IOObjectRelease (firstInterface); |
| |
| /* device is configured */ |
| if (dev->dev_descriptor.bNumConfigurations == 1) |
| /* to avoid problems with some devices get the configurations value from the configuration descriptor */ |
| dev->active_config = dev->first_config; |
| else |
| /* devices with more than one configuration should work with GetConfiguration */ |
| (*darwin_device)->GetConfiguration (darwin_device, &dev->active_config); |
| } else |
| /* not configured */ |
| dev->active_config = 0; |
| |
| usbi_dbg (ctx, "active config: %u, first config: %u", dev->active_config, dev->first_config); |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static IOReturn darwin_request_descriptor (usb_device_t **device, UInt8 desc, UInt8 desc_index, void *buffer, size_t buffer_size) { |
| IOUSBDevRequestTO req; |
| |
| assert(buffer_size <= UINT16_MAX); |
| |
| memset (buffer, 0, buffer_size); |
| |
| /* Set up request for descriptor/ */ |
| req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice); |
| req.bRequest = kUSBRqGetDescriptor; |
| req.wValue = (UInt16)(desc << 8); |
| req.wIndex = desc_index; |
| req.wLength = (UInt16)buffer_size; |
| req.pData = buffer; |
| req.noDataTimeout = 20; |
| req.completionTimeout = 100; |
| |
| return (*device)->DeviceRequestTO (device, &req); |
| } |
| |
| static enum libusb_error darwin_cache_device_descriptor (struct libusb_context *ctx, struct darwin_cached_device *dev) { |
| usb_device_t **device = dev->device; |
| int retries = 1; |
| long delay = 30000; // microseconds |
| int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1; |
| int is_open = 0; |
| IOReturn ret = 0, ret2; |
| UInt8 bDeviceClass; |
| UInt16 idProduct, idVendor; |
| |
| dev->can_enumerate = 0; |
| |
| (*device)->GetDeviceClass (device, &bDeviceClass); |
| (*device)->GetDeviceProduct (device, &idProduct); |
| (*device)->GetDeviceVendor (device, &idVendor); |
| |
| /* According to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some |
| * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still, |
| * to follow the spec as closely as possible, try opening the device */ |
| is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess); |
| |
| do { |
| /**** retrieve device descriptor ****/ |
| ret = darwin_request_descriptor (device, kUSBDeviceDesc, 0, &dev->dev_descriptor, sizeof(dev->dev_descriptor)); |
| |
| if (kIOReturnOverrun == ret && kUSBDeviceDesc == dev->dev_descriptor.bDescriptorType) |
| /* received an overrun error but we still received a device descriptor */ |
| ret = kIOReturnSuccess; |
| |
| if (kIOUSBVendorIDAppleComputer == idVendor) { |
| /* NTH: don't bother retrying or unsuspending Apple devices */ |
| break; |
| } |
| |
| if (kIOReturnSuccess == ret && (0 == dev->dev_descriptor.bNumConfigurations || |
| 0 == dev->dev_descriptor.bcdUSB)) { |
| /* work around for incorrectly configured devices */ |
| if (try_reconfigure && is_open) { |
| usbi_dbg(ctx, "descriptor appears to be invalid. resetting configuration before trying again..."); |
| |
| /* set the first configuration */ |
| (*device)->SetConfiguration(device, 1); |
| |
| /* don't try to reconfigure again */ |
| try_reconfigure = 0; |
| } |
| |
| ret = kIOUSBPipeStalled; |
| } |
| |
| if (kIOReturnSuccess != ret && is_open && try_unsuspend) { |
| /* device may be suspended. unsuspend it and try again */ |
| #if DeviceVersion >= 320 |
| UInt32 info = 0; |
| |
| /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */ |
| (void)(*device)->GetUSBDeviceInformation (device, &info); |
| |
| /* note that the device was suspended */ |
| if (info & (1U << kUSBInformationDeviceIsSuspendedBit) || 0 == info) |
| try_unsuspend = 1; |
| #endif |
| |
| if (try_unsuspend) { |
| /* try to unsuspend the device */ |
| ret2 = (*device)->USBDeviceSuspend (device, 0); |
| if (kIOReturnSuccess != ret2) { |
| /* prevent log spew from poorly behaving devices. this indicates the |
| os actually had trouble communicating with the device */ |
| usbi_dbg(ctx, "could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2)); |
| } else |
| unsuspended = 1; |
| |
| try_unsuspend = 0; |
| } |
| } |
| |
| if (kIOReturnSuccess != ret) { |
| usbi_dbg(ctx, "kernel responded with code: 0x%08x. sleeping for %ld ms before trying again", ret, delay/1000); |
| /* sleep for a little while before trying again */ |
| nanosleep(&(struct timespec){delay / 1000000, (delay * 1000) % 1000000000}, NULL); |
| } |
| } while (kIOReturnSuccess != ret && retries--); |
| |
| if (unsuspended) |
| /* resuspend the device */ |
| (void)(*device)->USBDeviceSuspend (device, 1); |
| |
| if (is_open) |
| (void) (*device)->USBDeviceClose (device); |
| |
| if (ret != kIOReturnSuccess) { |
| /* a debug message was already printed out for this error */ |
| if (LIBUSB_CLASS_HUB == bDeviceClass) |
| usbi_dbg (ctx, "could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device", |
| idVendor, idProduct, darwin_error_str (ret), ret); |
| else |
| usbi_warn (ctx, "could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device", |
| idVendor, idProduct, darwin_error_str (ret), ret); |
| return darwin_to_libusb (ret); |
| } |
| |
| /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */ |
| if (libusb_le16_to_cpu (dev->dev_descriptor.idProduct) != idProduct) { |
| /* not a valid device */ |
| usbi_warn (NULL, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device", |
| idProduct, libusb_le16_to_cpu (dev->dev_descriptor.idProduct)); |
| return LIBUSB_ERROR_NO_DEVICE; |
| } |
| |
| usbi_dbg (ctx, "cached device descriptor:"); |
| usbi_dbg (ctx, " bDescriptorType: 0x%02x", dev->dev_descriptor.bDescriptorType); |
| usbi_dbg (ctx, " bcdUSB: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.bcdUSB)); |
| usbi_dbg (ctx, " bDeviceClass: 0x%02x", dev->dev_descriptor.bDeviceClass); |
| usbi_dbg (ctx, " bDeviceSubClass: 0x%02x", dev->dev_descriptor.bDeviceSubClass); |
| usbi_dbg (ctx, " bDeviceProtocol: 0x%02x", dev->dev_descriptor.bDeviceProtocol); |
| usbi_dbg (ctx, " bMaxPacketSize0: 0x%02x", dev->dev_descriptor.bMaxPacketSize0); |
| usbi_dbg (ctx, " idVendor: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.idVendor)); |
| usbi_dbg (ctx, " idProduct: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.idProduct)); |
| usbi_dbg (ctx, " bcdDevice: 0x%04x", libusb_le16_to_cpu (dev->dev_descriptor.bcdDevice)); |
| usbi_dbg (ctx, " iManufacturer: 0x%02x", dev->dev_descriptor.iManufacturer); |
| usbi_dbg (ctx, " iProduct: 0x%02x", dev->dev_descriptor.iProduct); |
| usbi_dbg (ctx, " iSerialNumber: 0x%02x", dev->dev_descriptor.iSerialNumber); |
| usbi_dbg (ctx, " bNumConfigurations: 0x%02x", dev->dev_descriptor.bNumConfigurations); |
| |
| dev->can_enumerate = 1; |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| /* Returns 1 on success, 0 on failure. */ |
| static bool get_device_port (io_service_t service, UInt8 *port) { |
| IOReturn kresult; |
| io_service_t parent; |
| bool ret = false; |
| |
| if (get_ioregistry_value_number (service, CFSTR("PortNum"), kCFNumberSInt8Type, port)) { |
| return true; |
| } |
| |
| kresult = IORegistryEntryGetParentEntry (service, kIOServicePlane, &parent); |
| if (kIOReturnSuccess == kresult) { |
| ret = get_ioregistry_value_data (parent, CFSTR("port"), 1, port); |
| IOObjectRelease (parent); |
| } |
| |
| return ret; |
| } |
| |
| /* Returns 1 on success, 0 on failure. */ |
| static bool get_device_parent_sessionID(io_service_t service, UInt64 *parent_sessionID) { |
| IOReturn kresult; |
| io_service_t parent; |
| |
| /* Walk up the tree in the IOService plane until we find a parent that has a sessionID */ |
| parent = service; |
| while((kresult = IORegistryEntryGetParentEntry (parent, kIOUSBPlane, &parent)) == kIOReturnSuccess) { |
| if (get_ioregistry_value_number (parent, CFSTR("sessionID"), kCFNumberSInt64Type, parent_sessionID)) { |
| /* Success */ |
| return true; |
| } |
| } |
| |
| /* We ran out of parents */ |
| return false; |
| } |
| |
| static enum libusb_error darwin_get_cached_device(struct libusb_context *ctx, io_service_t service, struct darwin_cached_device **cached_out, |
| UInt64 *old_session_id) { |
| struct darwin_cached_device *new_device; |
| UInt64 sessionID = 0, parent_sessionID = 0; |
| UInt32 locationID = 0; |
| enum libusb_error ret = LIBUSB_SUCCESS; |
| usb_device_t **device; |
| UInt8 port = 0; |
| |
| /* assuming sessionID != 0 normally (never seen it be 0) */ |
| *old_session_id = 0; |
| *cached_out = NULL; |
| |
| /* get some info from the io registry */ |
| (void) get_ioregistry_value_number (service, CFSTR("sessionID"), kCFNumberSInt64Type, &sessionID); |
| (void) get_ioregistry_value_number (service, CFSTR("locationID"), kCFNumberSInt32Type, &locationID); |
| if (!get_device_port (service, &port)) { |
| usbi_dbg(ctx, "could not get connected port number"); |
| } |
| |
| usbi_dbg(ctx, "finding cached device for sessionID 0x%" PRIx64, sessionID); |
| |
| if (get_device_parent_sessionID(service, &parent_sessionID)) { |
| usbi_dbg(ctx, "parent sessionID: 0x%" PRIx64, parent_sessionID); |
| } |
| |
| usbi_mutex_lock(&darwin_cached_devices_lock); |
| do { |
| list_for_each_entry(new_device, &darwin_cached_devices, list, struct darwin_cached_device) { |
| usbi_dbg(ctx, "matching sessionID/locationID 0x%" PRIx64 "/0x%x against cached device with sessionID/locationID 0x%" PRIx64 "/0x%x", |
| sessionID, locationID, new_device->session, new_device->location); |
| if (new_device->location == locationID && new_device->in_reenumerate) { |
| usbi_dbg (ctx, "found cached device with matching location that is being re-enumerated"); |
| *old_session_id = new_device->session; |
| break; |
| } |
| |
| if (new_device->session == sessionID) { |
| usbi_dbg(ctx, "using cached device for device"); |
| *cached_out = new_device; |
| break; |
| } |
| } |
| |
| if (*cached_out) |
| break; |
| |
| usbi_dbg(ctx, "caching new device with sessionID 0x%" PRIx64, sessionID); |
| |
| device = darwin_device_from_service (ctx, service); |
| if (!device) { |
| ret = LIBUSB_ERROR_NO_DEVICE; |
| break; |
| } |
| |
| if (!(*old_session_id)) { |
| new_device = calloc (1, sizeof (*new_device)); |
| if (!new_device) { |
| ret = LIBUSB_ERROR_NO_MEM; |
| break; |
| } |
| |
| /* add this device to the cached device list */ |
| list_add(&new_device->list, &darwin_cached_devices); |
| |
| (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&new_device->address); |
| |
| /* keep a reference to this device */ |
| darwin_ref_cached_device(new_device); |
| |
| (*device)->GetLocationID (device, &new_device->location); |
| new_device->port = port; |
| new_device->parent_session = parent_sessionID; |
| } else { |
| /* release the ref to old device's service */ |
| IOObjectRelease (new_device->service); |
| } |
| |
| /* keep track of devices regardless of if we successfully enumerate them to |
| prevent them from being enumerated multiple times */ |
| *cached_out = new_device; |
| |
| new_device->session = sessionID; |
| new_device->device = device; |
| new_device->service = service; |
| |
| /* retain the service */ |
| IOObjectRetain (service); |
| |
| /* cache the device descriptor */ |
| ret = darwin_cache_device_descriptor(ctx, new_device); |
| if (ret) |
| break; |
| |
| if (new_device->can_enumerate) { |
| snprintf(new_device->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", new_device->address, |
| libusb_le16_to_cpu (new_device->dev_descriptor.idVendor), |
| libusb_le16_to_cpu (new_device->dev_descriptor.idProduct), |
| new_device->dev_descriptor.bDeviceClass, new_device->dev_descriptor.bDeviceSubClass); |
| } |
| } while (0); |
| |
| usbi_mutex_unlock(&darwin_cached_devices_lock); |
| |
| return ret; |
| } |
| |
| static enum libusb_error process_new_device (struct libusb_context *ctx, struct darwin_cached_device *cached_device, |
| UInt64 old_session_id) { |
| struct darwin_device_priv *priv; |
| struct libusb_device *dev = NULL; |
| UInt8 devSpeed; |
| enum libusb_error ret = LIBUSB_SUCCESS; |
| |
| do { |
| /* check current active configuration (and cache the first configuration value-- |
| which may be used by claim_interface) */ |
| ret = darwin_check_configuration (ctx, cached_device); |
| if (ret) |
| break; |
| |
| if (0 != old_session_id) { |
| usbi_dbg (ctx, "re-using existing device from context %p for with session 0x%" PRIx64 " new session 0x%" PRIx64, |
| ctx, old_session_id, cached_device->session); |
| /* save the libusb device before the session id is updated */ |
| dev = usbi_get_device_by_session_id (ctx, (unsigned long) old_session_id); |
| } |
| |
| if (!dev) { |
| usbi_dbg (ctx, "allocating new device in context %p for with session 0x%" PRIx64, |
| ctx, cached_device->session); |
| |
| dev = usbi_alloc_device(ctx, (unsigned long) cached_device->session); |
| if (!dev) { |
| return LIBUSB_ERROR_NO_MEM; |
| } |
| |
| priv = usbi_get_device_priv(dev); |
| |
| priv->dev = cached_device; |
| darwin_ref_cached_device (priv->dev); |
| dev->port_number = cached_device->port; |
| /* the location ID encodes the path to the device. the top byte of the location ID contains the bus number |
| (numbered from 0). the remaining bytes can be used to construct the device tree for that bus. */ |
| dev->bus_number = cached_device->location >> 24; |
| assert(cached_device->address <= UINT8_MAX); |
| dev->device_address = (uint8_t)cached_device->address; |
| } else { |
| priv = usbi_get_device_priv(dev); |
| } |
| |
| static_assert(sizeof(dev->device_descriptor) == sizeof(cached_device->dev_descriptor), |
| "mismatch between libusb and IOKit device descriptor sizes"); |
| memcpy(&dev->device_descriptor, &cached_device->dev_descriptor, LIBUSB_DT_DEVICE_SIZE); |
| usbi_localize_device_descriptor(&dev->device_descriptor); |
| dev->session_data = cached_device->session; |
| |
| if (NULL != dev->parent_dev) { |
| libusb_unref_device(dev->parent_dev); |
| dev->parent_dev = NULL; |
| } |
| |
| if (cached_device->parent_session > 0) { |
| dev->parent_dev = usbi_get_device_by_session_id (ctx, (unsigned long) cached_device->parent_session); |
| } |
| |
| (*(priv->dev->device))->GetDeviceSpeed (priv->dev->device, &devSpeed); |
| |
| switch (devSpeed) { |
| case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break; |
| case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break; |
| case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break; |
| #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080 |
| case kUSBDeviceSpeedSuper: dev->speed = LIBUSB_SPEED_SUPER; break; |
| #endif |
| #if MAC_OS_X_VERSION_MAX_ALLOWED >= 101200 |
| case kUSBDeviceSpeedSuperPlus: dev->speed = LIBUSB_SPEED_SUPER_PLUS; break; |
| #endif |
| default: |
| usbi_warn (ctx, "Got unknown device speed %d", devSpeed); |
| } |
| |
| ret = usbi_sanitize_device (dev); |
| if (ret < 0) |
| break; |
| |
| usbi_dbg (ctx, "found device with address %d port = %d parent = %p at %p", dev->device_address, |
| dev->port_number, (void *) dev->parent_dev, priv->dev->sys_path); |
| |
| } while (0); |
| |
| if (!cached_device->in_reenumerate && 0 == ret) { |
| usbi_connect_device (dev); |
| } else { |
| libusb_unref_device (dev); |
| } |
| |
| return ret; |
| } |
| |
| static enum libusb_error darwin_scan_devices(struct libusb_context *ctx) { |
| struct darwin_cached_device *cached_device; |
| UInt64 old_session_id; |
| io_iterator_t deviceIterator; |
| io_service_t service; |
| IOReturn kresult; |
| int ret; |
| |
| kresult = usb_setup_device_iterator (&deviceIterator, 0); |
| if (kresult != kIOReturnSuccess) |
| return darwin_to_libusb (kresult); |
| |
| while ((service = IOIteratorNext (deviceIterator))) { |
| ret = darwin_get_cached_device (ctx, service, &cached_device, &old_session_id); |
| if (ret < 0 || !cached_device->can_enumerate) { |
| continue; |
| } |
| |
| (void) process_new_device (ctx, cached_device, old_session_id); |
| |
| IOObjectRelease(service); |
| } |
| |
| IOObjectRelease(deviceIterator); |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static int darwin_open (struct libusb_device_handle *dev_handle) { |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| IOReturn kresult; |
| |
| if (0 == dpriv->open_count) { |
| /* try to open the device */ |
| kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device); |
| if (kresult != kIOReturnSuccess) { |
| usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult)); |
| |
| if (kIOReturnExclusiveAccess != kresult) { |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* it is possible to perform some actions on a device that is not open so do not return an error */ |
| priv->is_open = false; |
| } else { |
| priv->is_open = true; |
| } |
| |
| /* create async event source */ |
| kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult)); |
| |
| if (priv->is_open) { |
| (*(dpriv->device))->USBDeviceClose (dpriv->device); |
| } |
| |
| priv->is_open = false; |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| CFRetain (libusb_darwin_acfl); |
| |
| /* add the cfSource to the async run loop */ |
| CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes); |
| } |
| |
| /* device opened successfully */ |
| dpriv->open_count++; |
| |
| usbi_dbg (HANDLE_CTX(dev_handle), "device open for access"); |
| |
| return 0; |
| } |
| |
| static void darwin_close (struct libusb_device_handle *dev_handle) { |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| IOReturn kresult; |
| int i; |
| |
| if (dpriv->open_count == 0) { |
| /* something is probably very wrong if this is the case */ |
| usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!"); |
| return; |
| } |
| |
| dpriv->open_count--; |
| if (NULL == dpriv->device) { |
| usbi_warn (HANDLE_CTX (dev_handle), "darwin_close device missing IOService"); |
| return; |
| } |
| |
| /* make sure all interfaces are released */ |
| for (i = 0 ; i < USB_MAXINTERFACES ; i++) |
| if (dev_handle->claimed_interfaces & (1U << i)) |
| libusb_release_interface (dev_handle, i); |
| |
| if (0 == dpriv->open_count) { |
| /* delete the device's async event source */ |
| if (priv->cfSource) { |
| CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode); |
| CFRelease (priv->cfSource); |
| priv->cfSource = NULL; |
| CFRelease (libusb_darwin_acfl); |
| } |
| |
| if (priv->is_open) { |
| /* close the device */ |
| kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device); |
| if (kresult != kIOReturnSuccess) { |
| /* Log the fact that we had a problem closing the file, however failing a |
| * close isn't really an error, so return success anyway */ |
| usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult)); |
| } |
| } |
| } |
| } |
| |
| static int darwin_get_configuration(struct libusb_device_handle *dev_handle, uint8_t *config) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| |
| *config = dpriv->active_config; |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static enum libusb_error darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| IOReturn kresult; |
| uint8_t i; |
| |
| if (config == -1) |
| config = 0; |
| |
| /* Setting configuration will invalidate the interface, so we need |
| to reclaim it. First, dispose of existing interfaces, if any. */ |
| for (i = 0 ; i < USB_MAXINTERFACES ; i++) |
| if (dev_handle->claimed_interfaces & (1U << i)) |
| darwin_release_interface (dev_handle, i); |
| |
| kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, (UInt8)config); |
| if (kresult != kIOReturnSuccess) |
| return darwin_to_libusb (kresult); |
| |
| /* Reclaim any interfaces. */ |
| for (i = 0 ; i < USB_MAXINTERFACES ; i++) |
| if (dev_handle->claimed_interfaces & (1U << i)) |
| darwin_claim_interface (dev_handle, i); |
| |
| dpriv->active_config = (UInt8)config; |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static IOReturn darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) { |
| IOUSBFindInterfaceRequest request; |
| IOReturn kresult; |
| io_iterator_t interface_iterator; |
| UInt8 bInterfaceNumber; |
| bool ret; |
| |
| *usbInterfacep = IO_OBJECT_NULL; |
| |
| /* Setup the Interface Request */ |
| request.bInterfaceClass = kIOUSBFindInterfaceDontCare; |
| request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; |
| request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; |
| request.bAlternateSetting = kIOUSBFindInterfaceDontCare; |
| |
| kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator); |
| if (kresult != kIOReturnSuccess) |
| return kresult; |
| |
| while ((*usbInterfacep = IOIteratorNext(interface_iterator))) { |
| /* find the interface number */ |
| ret = get_ioregistry_value_number (*usbInterfacep, CFSTR("bInterfaceNumber"), kCFNumberSInt8Type, |
| &bInterfaceNumber); |
| |
| if (ret && bInterfaceNumber == ifc) { |
| break; |
| } |
| |
| (void) IOObjectRelease (*usbInterfacep); |
| } |
| |
| /* done with the interface iterator */ |
| IOObjectRelease(interface_iterator); |
| |
| return kIOReturnSuccess; |
| } |
| |
| static enum libusb_error get_endpoints (struct libusb_device_handle *dev_handle, uint8_t iface) { |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| |
| /* current interface */ |
| struct darwin_interface *cInterface = &priv->interfaces[iface]; |
| |
| IOReturn kresult; |
| |
| UInt8 numep, direction, number; |
| UInt8 dont_care1, dont_care3; |
| UInt16 dont_care2; |
| int rc; |
| struct libusb_context *ctx = HANDLE_CTX (dev_handle); |
| |
| |
| usbi_dbg (ctx, "building table of endpoints."); |
| |
| /* retrieve the total number of endpoints on this interface */ |
| kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "can't get number of endpoints for interface: %s", darwin_error_str(kresult)); |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* iterate through pipe references */ |
| for (UInt8 i = 1 ; i <= numep ; i++) { |
| kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1, |
| &dont_care2, &dont_care3); |
| |
| if (kresult != kIOReturnSuccess) { |
| /* probably a buggy device. try to get the endpoint address from the descriptors */ |
| struct libusb_config_descriptor *config; |
| const struct libusb_endpoint_descriptor *endpoint_desc; |
| UInt8 alt_setting; |
| |
| kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, &alt_setting); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (HANDLE_CTX (dev_handle), "can't get alternate setting for interface"); |
| return darwin_to_libusb (kresult); |
| } |
| |
| rc = libusb_get_active_config_descriptor (dev_handle->dev, &config); |
| if (LIBUSB_SUCCESS != rc) { |
| return rc; |
| } |
| |
| endpoint_desc = config->interface[iface].altsetting[alt_setting].endpoint + i - 1; |
| |
| cInterface->endpoint_addrs[i - 1] = endpoint_desc->bEndpointAddress; |
| } else { |
| cInterface->endpoint_addrs[i - 1] = (UInt8)(((kUSBIn == direction) << kUSBRqDirnShift) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK)); |
| } |
| |
| usbi_dbg (ctx, "interface: %i pipe %i: dir: %i number: %i", iface, i, cInterface->endpoint_addrs[i - 1] >> kUSBRqDirnShift, |
| cInterface->endpoint_addrs[i - 1] & LIBUSB_ENDPOINT_ADDRESS_MASK); |
| } |
| |
| cInterface->num_endpoints = numep; |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static int darwin_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| io_service_t usbInterface = IO_OBJECT_NULL; |
| IOReturn kresult; |
| enum libusb_error ret; |
| IOCFPlugInInterface **plugInInterface = NULL; |
| SInt32 score; |
| |
| /* current interface */ |
| struct darwin_interface *cInterface = &priv->interfaces[iface]; |
| |
| struct libusb_context *ctx = HANDLE_CTX (dev_handle); |
| |
| kresult = darwin_get_interface (dpriv->device, iface, &usbInterface); |
| if (kresult != kIOReturnSuccess) |
| return darwin_to_libusb (kresult); |
| |
| /* make sure we have an interface */ |
| if (!usbInterface && dpriv->first_config != 0) { |
| usbi_info (ctx, "no interface found; setting configuration: %d", dpriv->first_config); |
| |
| /* set the configuration */ |
| ret = darwin_set_configuration (dev_handle, (int) dpriv->first_config); |
| if (ret != LIBUSB_SUCCESS) { |
| usbi_err (ctx, "could not set configuration"); |
| return ret; |
| } |
| |
| kresult = darwin_get_interface (dpriv->device, iface, &usbInterface); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "darwin_get_interface: %s", darwin_error_str(kresult)); |
| return darwin_to_libusb (kresult); |
| } |
| } |
| |
| if (!usbInterface) { |
| usbi_info (ctx, "interface not found"); |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| /* get an interface to the device's interface */ |
| kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID, |
| kIOCFPlugInInterfaceID, &plugInInterface, &score); |
| |
| /* ignore release error */ |
| (void)IOObjectRelease (usbInterface); |
| |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult)); |
| return darwin_to_libusb (kresult); |
| } |
| |
| if (!plugInInterface) { |
| usbi_err (ctx, "plugin interface not found"); |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| /* Do the actual claim */ |
| kresult = (*plugInInterface)->QueryInterface(plugInInterface, |
| CFUUIDGetUUIDBytes(InterfaceInterfaceID), |
| (LPVOID)&cInterface->interface); |
| /* We no longer need the intermediate plug-in */ |
| /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */ |
| (*plugInInterface)->Release (plugInInterface); |
| if (kresult != kIOReturnSuccess || !cInterface->interface) { |
| usbi_err (ctx, "QueryInterface: %s", darwin_error_str(kresult)); |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* claim the interface */ |
| kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface); |
| if (kresult != kIOReturnSuccess) { |
| usbi_info (ctx, "USBInterfaceOpen: %s", darwin_error_str(kresult)); |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* update list of endpoints */ |
| ret = get_endpoints (dev_handle, iface); |
| if (ret) { |
| /* this should not happen */ |
| darwin_release_interface (dev_handle, iface); |
| usbi_err (ctx, "could not build endpoint table"); |
| return ret; |
| } |
| |
| cInterface->cfSource = NULL; |
| |
| /* create async event source */ |
| kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "could not create async event source"); |
| |
| /* can't continue without an async event source */ |
| (void)darwin_release_interface (dev_handle, iface); |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* add the cfSource to the async thread's run loop */ |
| CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode); |
| |
| usbi_dbg (ctx, "interface opened"); |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static int darwin_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface) { |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| IOReturn kresult; |
| |
| /* current interface */ |
| struct darwin_interface *cInterface = &priv->interfaces[iface]; |
| |
| /* Check to see if an interface is open */ |
| if (!cInterface->interface) |
| return LIBUSB_SUCCESS; |
| |
| /* clean up endpoint data */ |
| cInterface->num_endpoints = 0; |
| |
| /* delete the interface's async event source */ |
| if (cInterface->cfSource) { |
| CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode); |
| CFRelease (cInterface->cfSource); |
| cInterface->cfSource = NULL; |
| } |
| |
| kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface); |
| if (kresult != kIOReturnSuccess) |
| usbi_warn (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult)); |
| |
| kresult = (*(cInterface->interface))->Release(cInterface->interface); |
| if (kresult != kIOReturnSuccess) |
| usbi_warn (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult)); |
| |
| cInterface->interface = (usb_interface_t **) IO_OBJECT_NULL; |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| static int check_alt_setting_and_clear_halt(struct libusb_device_handle *dev_handle, uint8_t altsetting, struct darwin_interface *cInterface) { |
| enum libusb_error ret; |
| IOReturn kresult; |
| uint8_t current_alt_setting; |
| |
| kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, ¤t_alt_setting); |
| if (kresult == kIOReturnSuccess && altsetting != current_alt_setting) { |
| return LIBUSB_ERROR_PIPE; |
| } |
| |
| for (int i = 0 ; i < cInterface->num_endpoints ; i++) { |
| ret = darwin_clear_halt(dev_handle, cInterface->endpoint_addrs[i]); |
| if (LIBUSB_SUCCESS != ret) { |
| usbi_warn(HANDLE_CTX (dev_handle), "error clearing pipe halt for endpoint %d", i); |
| if (LIBUSB_ERROR_NOT_FOUND == ret) { |
| /* may need to re-open the interface */ |
| return ret; |
| } |
| } |
| } |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) { |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| IOReturn kresult; |
| enum libusb_error ret; |
| |
| /* current interface */ |
| struct darwin_interface *cInterface = &priv->interfaces[iface]; |
| |
| if (!cInterface->interface) |
| return LIBUSB_ERROR_NO_DEVICE; |
| |
| kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting); |
| if (kresult == kIOReturnSuccess) { |
| /* update the list of endpoints */ |
| ret = get_endpoints (dev_handle, iface); |
| if (ret) { |
| /* this should not happen */ |
| darwin_release_interface (dev_handle, iface); |
| usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table"); |
| } |
| return ret; |
| } |
| |
| usbi_warn (HANDLE_CTX (dev_handle), "SetAlternateInterface: %s", darwin_error_str(kresult)); |
| |
| ret = darwin_to_libusb(kresult); |
| if (ret != LIBUSB_ERROR_PIPE) { |
| return ret; |
| } |
| |
| /* If a device only supports a default setting for the specified interface, then a STALL |
| (kIOUSBPipeStalled) may be returned. Ref: USB 2.0 specs 9.4.10. |
| Mimic the behaviour in e.g. the Linux kernel: in such case, reset all endpoints |
| of the interface (as would have been done per 9.1.1.5) and return success. */ |
| |
| ret = check_alt_setting_and_clear_halt(dev_handle, altsetting, cInterface); |
| if (LIBUSB_ERROR_NOT_FOUND == ret) { |
| /* For some reason we need to reclaim the interface after the pipe error with some versions of macOS */ |
| ret = darwin_claim_interface (dev_handle, iface); |
| if (LIBUSB_SUCCESS != ret) { |
| darwin_release_interface (dev_handle, iface); |
| usbi_err (HANDLE_CTX (dev_handle), "could not reclaim interface: %s", darwin_error_str(kresult)); |
| } |
| ret = check_alt_setting_and_clear_halt(dev_handle, altsetting, cInterface); |
| } |
| |
| return ret; |
| } |
| |
| static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) { |
| /* current interface */ |
| struct darwin_interface *cInterface; |
| IOReturn kresult; |
| uint8_t pipeRef; |
| |
| /* determine the interface/endpoint to use */ |
| if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, NULL, &cInterface) != 0) { |
| usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface"); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| /* newer versions of darwin support clearing additional bits on the device's endpoint */ |
| kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef); |
| if (kresult != kIOReturnSuccess) |
| usbi_warn (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult)); |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| static int darwin_restore_state (struct libusb_device_handle *dev_handle, int8_t active_config, |
| unsigned long claimed_interfaces) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| struct darwin_device_handle_priv *priv = usbi_get_device_handle_priv(dev_handle); |
| int open_count = dpriv->open_count; |
| int ret; |
| |
| struct libusb_context *ctx = HANDLE_CTX (dev_handle); |
| |
| /* clear claimed interfaces temporarily */ |
| dev_handle->claimed_interfaces = 0; |
| |
| /* close and re-open the device */ |
| priv->is_open = false; |
| dpriv->open_count = 1; |
| |
| /* clean up open interfaces */ |
| (void) darwin_close (dev_handle); |
| |
| /* re-open the device */ |
| ret = darwin_open (dev_handle); |
| dpriv->open_count = open_count; |
| if (LIBUSB_SUCCESS != ret) { |
| /* could not restore configuration */ |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| if (dpriv->active_config != active_config) { |
| usbi_dbg (ctx, "darwin/restore_state: restoring configuration %d...", active_config); |
| |
| ret = darwin_set_configuration (dev_handle, active_config); |
| if (LIBUSB_SUCCESS != ret) { |
| usbi_dbg (ctx, "darwin/restore_state: could not restore configuration"); |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| } |
| |
| usbi_dbg (ctx, "darwin/restore_state: reclaiming interfaces"); |
| |
| if (claimed_interfaces) { |
| for (uint8_t iface = 0 ; iface < USB_MAXINTERFACES ; ++iface) { |
| if (!(claimed_interfaces & (1U << iface))) { |
| continue; |
| } |
| |
| usbi_dbg (ctx, "darwin/restore_state: re-claiming interface %u", iface); |
| |
| ret = darwin_claim_interface (dev_handle, iface); |
| if (LIBUSB_SUCCESS != ret) { |
| usbi_dbg (ctx, "darwin/restore_state: could not claim interface %u", iface); |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| dev_handle->claimed_interfaces |= 1U << iface; |
| } |
| } |
| |
| usbi_dbg (ctx, "darwin/restore_state: device state restored"); |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| static int darwin_reenumerate_device (struct libusb_device_handle *dev_handle, bool capture) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| unsigned long claimed_interfaces = dev_handle->claimed_interfaces; |
| int8_t active_config = dpriv->active_config; |
| UInt32 options = 0; |
| IOUSBDeviceDescriptor descriptor; |
| IOUSBConfigurationDescriptorPtr cached_configuration; |
| IOUSBConfigurationDescriptor *cached_configurations; |
| IOReturn kresult; |
| UInt8 i; |
| |
| struct libusb_context *ctx = HANDLE_CTX (dev_handle); |
| |
| if (dpriv->in_reenumerate) { |
| /* ack, two (or more) threads are trying to reset the device! abort! */ |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| dpriv->in_reenumerate = true; |
| |
| /* store copies of descriptors so they can be compared after the reset */ |
| memcpy (&descriptor, &dpriv->dev_descriptor, sizeof (descriptor)); |
| cached_configurations = alloca (sizeof (*cached_configurations) * descriptor.bNumConfigurations); |
| |
| for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) { |
| (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration); |
| memcpy (cached_configurations + i, cached_configuration, sizeof (cached_configurations[i])); |
| } |
| |
| /* if we need to release capture */ |
| if (HAS_CAPTURE_DEVICE()) { |
| if (capture) { |
| #if MAC_OS_X_VERSION_MAX_ALLOWED >= 101000 |
| options |= kUSBReEnumerateCaptureDeviceMask; |
| #endif |
| } |
| } else { |
| capture = false; |
| } |
| |
| /* from macOS 10.11 ResetDevice no longer does anything so just use USBDeviceReEnumerate */ |
| kresult = (*(dpriv->device))->USBDeviceReEnumerate (dpriv->device, options); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (ctx, "USBDeviceReEnumerate: %s", darwin_error_str (kresult)); |
| dpriv->in_reenumerate = false; |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* capture mode does not re-enumerate but it does require re-open */ |
| if (capture) { |
| usbi_dbg (ctx, "darwin/reenumerate_device: restoring state..."); |
| dpriv->in_reenumerate = false; |
| return darwin_restore_state (dev_handle, active_config, claimed_interfaces); |
| } |
| |
| usbi_dbg (ctx, "darwin/reenumerate_device: waiting for re-enumeration to complete..."); |
| |
| struct timespec start; |
| usbi_get_monotonic_time(&start); |
| |
| while (dpriv->in_reenumerate) { |
| struct timespec delay = {.tv_sec = 0, .tv_nsec = 1000}; |
| nanosleep (&delay, NULL); |
| |
| struct timespec now; |
| usbi_get_monotonic_time(&now); |
| UInt32 elapsed = (now.tv_sec - start.tv_sec) * 1000000 + (now.tv_nsec - start.tv_nsec) / 1000; |
| |
| if (elapsed >= DARWIN_REENUMERATE_TIMEOUT_US) { |
| usbi_err (ctx, "darwin/reenumerate_device: timeout waiting for reenumerate"); |
| dpriv->in_reenumerate = false; |
| return LIBUSB_ERROR_TIMEOUT; |
| } |
| } |
| |
| /* compare descriptors */ |
| usbi_dbg (ctx, "darwin/reenumerate_device: checking whether descriptors changed"); |
| |
| if (memcmp (&descriptor, &dpriv->dev_descriptor, sizeof (descriptor))) { |
| /* device descriptor changed. need to return not found. */ |
| usbi_dbg (ctx, "darwin/reenumerate_device: device descriptor changed"); |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) { |
| (void) (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration); |
| if (memcmp (cached_configuration, cached_configurations + i, sizeof (cached_configurations[i]))) { |
| usbi_dbg (ctx, "darwin/reenumerate_device: configuration descriptor %d changed", i); |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| } |
| |
| usbi_dbg (ctx, "darwin/reenumerate_device: device reset complete. restoring state..."); |
| |
| return darwin_restore_state (dev_handle, active_config, claimed_interfaces); |
| } |
| |
| static int darwin_reset_device (struct libusb_device_handle *dev_handle) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| IOReturn kresult; |
| |
| if (dpriv->capture_count > 0) { |
| /* we have to use ResetDevice as USBDeviceReEnumerate() loses the authorization for capture */ |
| kresult = (*(dpriv->device))->ResetDevice (dpriv->device); |
| return darwin_to_libusb (kresult); |
| } else { |
| return darwin_reenumerate_device (dev_handle, false); |
| } |
| } |
| |
| static io_service_t usb_find_interface_matching_location (const io_name_t class_name, UInt8 interface_number, UInt32 location) { |
| CFMutableDictionaryRef matchingDict = IOServiceMatching (class_name); |
| CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable (kCFAllocatorDefault, 0, |
| &kCFTypeDictionaryKeyCallBacks, |
| &kCFTypeDictionaryValueCallBacks); |
| CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberSInt32Type, &location); |
| CFTypeRef interfaceCF = CFNumberCreate (NULL, kCFNumberSInt8Type, &interface_number); |
| |
| CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict); |
| CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF); |
| CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBHostMatchingPropertyInterfaceNumber), interfaceCF); |
| |
| CFRelease (interfaceCF); |
| CFRelease (locationCF); |
| CFRelease (propertyMatchDict); |
| |
| return IOServiceGetMatchingService (darwin_default_master_port, matchingDict); |
| } |
| |
| static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, uint8_t interface) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| io_service_t usb_interface, child = IO_OBJECT_NULL; |
| |
| /* locate the IO registry entry for this interface */ |
| usb_interface = usb_find_interface_matching_location (kIOUSBHostInterfaceClassName, interface, dpriv->location); |
| if (0 == usb_interface) { |
| /* check for the legacy class entry */ |
| usb_interface = usb_find_interface_matching_location (kIOUSBInterfaceClassName, interface, dpriv->location); |
| if (0 == usb_interface) { |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| } |
| |
| /* if the IO object has a child entry in the IO Registry it has a kernel driver attached */ |
| (void) IORegistryEntryGetChildEntry (usb_interface, kIOServicePlane, &child); |
| IOObjectRelease (usb_interface); |
| if (IO_OBJECT_NULL != child) { |
| IOObjectRelease (child); |
| return 1; |
| } |
| |
| /* no driver */ |
| return 0; |
| } |
| |
| static void darwin_destroy_device(struct libusb_device *dev) { |
| struct darwin_device_priv *dpriv = usbi_get_device_priv(dev); |
| |
| if (dpriv->dev) { |
| /* need to hold the lock in case this is the last reference to the device */ |
| usbi_mutex_lock(&darwin_cached_devices_lock); |
| darwin_deref_cached_device (dpriv->dev); |
| dpriv->dev = NULL; |
| usbi_mutex_unlock(&darwin_cached_devices_lock); |
| } |
| } |
| |
| static int submit_bulk_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| |
| IOReturn ret; |
| uint8_t transferType; |
| uint8_t pipeRef; |
| uint16_t maxPacketSize; |
| |
| struct darwin_interface *cInterface; |
| #if InterfaceVersion >= 550 |
| IOUSBEndpointProperties pipeProperties = {.bVersion = kUSBEndpointPropertiesVersion3}; |
| #else |
| /* None of the values below are used in libusb for bulk transfers */ |
| uint8_t direction, number, interval; |
| #endif |
| |
| if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { |
| usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| #if InterfaceVersion >= 550 |
| ret = (*(cInterface->interface))->GetPipePropertiesV3 (cInterface->interface, pipeRef, &pipeProperties); |
| |
| transferType = pipeProperties.bTransferType; |
| maxPacketSize = pipeProperties.wMaxPacketSize; |
| #else |
| ret = (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, |
| &transferType, &maxPacketSize, &interval); |
| #endif |
| |
| if (ret) { |
| usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", |
| darwin_error_str(ret), ret); |
| return darwin_to_libusb (ret); |
| } |
| |
| if (0 != (transfer->length % maxPacketSize)) { |
| /* do not need a zero packet */ |
| transfer->flags &= ~LIBUSB_TRANSFER_ADD_ZERO_PACKET; |
| } |
| |
| /* submit the request */ |
| /* timeouts are unavailable on interrupt endpoints */ |
| if (transferType == kUSBInterrupt) { |
| if (IS_XFERIN(transfer)) |
| ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer, |
| (UInt32)transfer->length, darwin_async_io_callback, itransfer); |
| else |
| ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer, |
| (UInt32)transfer->length, darwin_async_io_callback, itransfer); |
| } else { |
| itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; |
| |
| if (IS_XFERIN(transfer)) |
| ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer, |
| (UInt32)transfer->length, transfer->timeout, transfer->timeout, |
| darwin_async_io_callback, itransfer); |
| else |
| ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer, |
| (UInt32)transfer->length, transfer->timeout, transfer->timeout, |
| darwin_async_io_callback, itransfer); |
| } |
| |
| if (ret) |
| usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", |
| darwin_error_str(ret), ret); |
| |
| return darwin_to_libusb (ret); |
| } |
| |
| #if InterfaceVersion >= 550 |
| static int submit_stream_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct darwin_interface *cInterface; |
| uint8_t pipeRef; |
| IOReturn ret; |
| |
| if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { |
| usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; |
| |
| if (IS_XFERIN(transfer)) |
| ret = (*(cInterface->interface))->ReadStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id, |
| transfer->buffer, (UInt32)transfer->length, transfer->timeout, |
| transfer->timeout, darwin_async_io_callback, itransfer); |
| else |
| ret = (*(cInterface->interface))->WriteStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id, |
| transfer->buffer, (UInt32)transfer->length, transfer->timeout, |
| transfer->timeout, darwin_async_io_callback, itransfer); |
| |
| if (ret) |
| usbi_err (TRANSFER_CTX (transfer), "bulk stream transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", |
| darwin_error_str(ret), ret); |
| |
| return darwin_to_libusb (ret); |
| } |
| #endif |
| |
| static int submit_iso_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer); |
| |
| IOReturn kresult; |
| uint8_t direction, number, interval, pipeRef, transferType; |
| uint16_t maxPacketSize; |
| UInt64 frame; |
| AbsoluteTime atTime; |
| int i; |
| |
| struct darwin_interface *cInterface; |
| |
| /* construct an array of IOUSBIsocFrames, reuse the old one if the sizes are the same */ |
| if (tpriv->num_iso_packets != transfer->num_iso_packets) { |
| free(tpriv->isoc_framelist); |
| tpriv->isoc_framelist = NULL; |
| } |
| |
| if (!tpriv->isoc_framelist) { |
| tpriv->num_iso_packets = transfer->num_iso_packets; |
| tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc ((size_t)transfer->num_iso_packets, sizeof(IOUSBIsocFrame)); |
| if (!tpriv->isoc_framelist) |
| return LIBUSB_ERROR_NO_MEM; |
| } |
| |
| /* copy the frame list from the libusb descriptor (the structures differ only is member order) */ |
| for (i = 0 ; i < transfer->num_iso_packets ; i++) { |
| unsigned int length = transfer->iso_packet_desc[i].length; |
| assert(length <= UINT16_MAX); |
| tpriv->isoc_framelist[i].frReqCount = (UInt16)length; |
| } |
| |
| /* determine the interface/endpoint to use */ |
| if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { |
| usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| /* determine the properties of this endpoint and the speed of the device */ |
| (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, |
| &transferType, &maxPacketSize, &interval); |
| |
| /* Last but not least we need the bus frame number */ |
| kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime); |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult); |
| free(tpriv->isoc_framelist); |
| tpriv->isoc_framelist = NULL; |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, |
| &transferType, &maxPacketSize, &interval); |
| |
| /* schedule for a frame a little in the future */ |
| frame += 4; |
| |
| if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint]) |
| frame = cInterface->frames[transfer->endpoint]; |
| |
| /* submit the request */ |
| if (IS_XFERIN(transfer)) |
| kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame, |
| (UInt32)transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback, |
| itransfer); |
| else |
| kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame, |
| (UInt32)transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback, |
| itransfer); |
| |
| if (LIBUSB_SPEED_FULL == transfer->dev_handle->dev->speed) |
| /* Full speed */ |
| cInterface->frames[transfer->endpoint] = frame + (UInt32)transfer->num_iso_packets * (1U << (interval - 1)); |
| else |
| /* High/super speed */ |
| cInterface->frames[transfer->endpoint] = frame + (UInt32)transfer->num_iso_packets * (1U << (interval - 1)) / 8; |
| |
| if (kresult != kIOReturnSuccess) { |
| usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out", |
| darwin_error_str(kresult)); |
| free (tpriv->isoc_framelist); |
| tpriv->isoc_framelist = NULL; |
| } |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| static int submit_control_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer; |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev); |
| struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer); |
| |
| IOReturn kresult; |
| |
| memset(&tpriv->req, 0, sizeof(tpriv->req)); |
| |
| /* IOUSBDeviceInterface expects the request in cpu endianness */ |
| tpriv->req.bmRequestType = setup->bmRequestType; |
| tpriv->req.bRequest = setup->bRequest; |
| /* these values should be in bus order from libusb_fill_control_setup */ |
| tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue); |
| tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex); |
| tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength); |
| /* data is stored after the libusb control block */ |
| tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; |
| tpriv->req.completionTimeout = transfer->timeout; |
| tpriv->req.noDataTimeout = transfer->timeout; |
| |
| itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; |
| |
| /* all transfers in libusb-1.0 are async */ |
| |
| if (transfer->endpoint) { |
| struct darwin_interface *cInterface; |
| uint8_t pipeRef; |
| |
| if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { |
| usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer); |
| } else |
| /* control request on endpoint 0 */ |
| kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer); |
| |
| if (kresult != kIOReturnSuccess) |
| usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult)); |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| static int darwin_submit_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| |
| switch (transfer->type) { |
| case LIBUSB_TRANSFER_TYPE_CONTROL: |
| return submit_control_transfer(itransfer); |
| case LIBUSB_TRANSFER_TYPE_BULK: |
| case LIBUSB_TRANSFER_TYPE_INTERRUPT: |
| return submit_bulk_transfer(itransfer); |
| case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: |
| return submit_iso_transfer(itransfer); |
| case LIBUSB_TRANSFER_TYPE_BULK_STREAM: |
| #if InterfaceVersion >= 550 |
| return submit_stream_transfer(itransfer); |
| #else |
| usbi_err (TRANSFER_CTX(transfer), "IOUSBFamily version does not support bulk stream transfers"); |
| return LIBUSB_ERROR_NOT_SUPPORTED; |
| #endif |
| default: |
| usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); |
| return LIBUSB_ERROR_INVALID_PARAM; |
| } |
| } |
| |
| static int cancel_control_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev); |
| IOReturn kresult; |
| |
| usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions control pipe"); |
| |
| if (!dpriv->device) |
| return LIBUSB_ERROR_NO_DEVICE; |
| |
| kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device); |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| static int darwin_abort_transfers (struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev); |
| struct darwin_interface *cInterface; |
| uint8_t pipeRef, iface; |
| IOReturn kresult; |
| |
| struct libusb_context *ctx = ITRANSFER_CTX (itransfer); |
| |
| if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface, &cInterface) != 0) { |
| usbi_err (ctx, "endpoint not found on any open interface"); |
| |
| return LIBUSB_ERROR_NOT_FOUND; |
| } |
| |
| if (!dpriv->device) |
| return LIBUSB_ERROR_NO_DEVICE; |
| |
| usbi_warn (ctx, "aborting all transactions on interface %d pipe %d", iface, pipeRef); |
| |
| /* abort transactions */ |
| #if InterfaceVersion >= 550 |
| if (LIBUSB_TRANSFER_TYPE_BULK_STREAM == transfer->type) |
| (*(cInterface->interface))->AbortStreamsPipe (cInterface->interface, pipeRef, itransfer->stream_id); |
| else |
| #endif |
| (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef); |
| |
| usbi_dbg (ctx, "calling clear pipe stall to clear the data toggle bit"); |
| |
| /* newer versions of darwin support clearing additional bits on the device's endpoint */ |
| kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef); |
| |
| return darwin_to_libusb (kresult); |
| } |
| |
| static int darwin_cancel_transfer(struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| |
| switch (transfer->type) { |
| case LIBUSB_TRANSFER_TYPE_CONTROL: |
| return cancel_control_transfer(itransfer); |
| case LIBUSB_TRANSFER_TYPE_BULK: |
| case LIBUSB_TRANSFER_TYPE_INTERRUPT: |
| case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: |
| return darwin_abort_transfers (itransfer); |
| default: |
| usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); |
| return LIBUSB_ERROR_INVALID_PARAM; |
| } |
| } |
| |
| static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) { |
| struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon; |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer); |
| |
| usbi_dbg (TRANSFER_CTX(transfer), "an async io operation has completed"); |
| |
| /* if requested write a zero packet */ |
| if (kIOReturnSuccess == result && IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) { |
| struct darwin_interface *cInterface; |
| uint8_t pipeRef; |
| |
| (void) ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface); |
| |
| (*(cInterface->interface))->WritePipe (cInterface->interface, pipeRef, transfer->buffer, 0); |
| } |
| |
| tpriv->result = result; |
| tpriv->size = (UInt32) (uintptr_t) arg0; |
| |
| /* signal the core that this transfer is complete */ |
| usbi_signal_transfer_completion(itransfer); |
| } |
| |
| static enum libusb_transfer_status darwin_transfer_status (struct usbi_transfer *itransfer, IOReturn result) { |
| if (itransfer->timeout_flags & USBI_TRANSFER_TIMED_OUT) |
| result = kIOUSBTransactionTimeout; |
| |
| struct libusb_context *ctx = ITRANSFER_CTX (itransfer); |
| |
| switch (result) { |
| case kIOReturnUnderrun: |
| case kIOReturnSuccess: |
| return LIBUSB_TRANSFER_COMPLETED; |
| case kIOReturnAborted: |
| return LIBUSB_TRANSFER_CANCELLED; |
| case kIOUSBPipeStalled: |
| usbi_dbg (ctx, "transfer error: pipe is stalled"); |
| return LIBUSB_TRANSFER_STALL; |
| case kIOReturnOverrun: |
| usbi_warn (ctx, "transfer error: data overrun"); |
| return LIBUSB_TRANSFER_OVERFLOW; |
| case kIOUSBTransactionTimeout: |
| usbi_warn (ctx, "transfer error: timed out"); |
| itransfer->timeout_flags |= USBI_TRANSFER_TIMED_OUT; |
| return LIBUSB_TRANSFER_TIMED_OUT; |
| default: |
| usbi_warn (ctx, "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result); |
| return LIBUSB_TRANSFER_ERROR; |
| } |
| } |
| |
| static int darwin_handle_transfer_completion (struct usbi_transfer *itransfer) { |
| struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); |
| struct darwin_transfer_priv *tpriv = usbi_get_transfer_priv(itransfer); |
| const unsigned char max_transfer_type = LIBUSB_TRANSFER_TYPE_BULK_STREAM; |
| const char *transfer_types[] = {"control", "isoc", "bulk", "interrupt", "bulk-stream", NULL}; |
| bool is_isoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type; |
| struct libusb_context *ctx = ITRANSFER_CTX (itransfer); |
| |
| if (transfer->type > max_transfer_type) { |
| usbi_err (ctx, "unknown endpoint type %d", transfer->type); |
| return LIBUSB_ERROR_INVALID_PARAM; |
| } |
| |
| if (NULL == tpriv) { |
| usbi_err (ctx, "malformed request is missing transfer priv"); |
| return LIBUSB_ERROR_INVALID_PARAM; |
| } |
| |
| usbi_dbg (ctx, "handling transfer completion type %s with kernel status %d", transfer_types[transfer->type], tpriv->result); |
| |
| if (kIOReturnSuccess == tpriv->result || kIOReturnUnderrun == tpriv->result || kIOUSBTransactionTimeout == tpriv->result) { |
| if (is_isoc && tpriv->isoc_framelist) { |
| /* copy isochronous results back */ |
| |
| for (int i = 0; i < transfer->num_iso_packets ; i++) { |
| struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i]; |
| lib_desc->status = darwin_transfer_status (itransfer, tpriv->isoc_framelist[i].frStatus); |
| lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount; |
| } |
| } else if (!is_isoc) { |
| itransfer->transferred += tpriv->size; |
| } |
| } |
| |
| /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */ |
| return usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, tpriv->result)); |
| } |
| |
| #if !defined(HAVE_CLOCK_GETTIME) |
| void usbi_get_monotonic_time(struct timespec *tp) { |
| mach_timespec_t sys_time; |
| |
| /* use system boot time as reference for the monotonic clock */ |
| clock_get_time (clock_monotonic, &sys_time); |
| |
| tp->tv_sec = sys_time.tv_sec; |
| tp->tv_nsec = sys_time.tv_nsec; |
| } |
| |
| void usbi_get_real_time(struct timespec *tp) { |
| mach_timespec_t sys_time; |
| |
| /* CLOCK_REALTIME represents time since the epoch */ |
| clock_get_time (clock_realtime, &sys_time); |
| |
| tp->tv_sec = sys_time.tv_sec; |
| tp->tv_nsec = sys_time.tv_nsec; |
| } |
| #endif |
| |
| #if InterfaceVersion >= 550 |
| static int darwin_alloc_streams (struct libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints, |
| int num_endpoints) { |
| struct darwin_interface *cInterface; |
| UInt32 supportsStreams; |
| uint8_t pipeRef; |
| int rc, i; |
| |
| /* find the minimum number of supported streams on the endpoint list */ |
| for (i = 0 ; i < num_endpoints ; ++i) { |
| if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) { |
| return rc; |
| } |
| |
| (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams); |
| if (num_streams > supportsStreams) |
| num_streams = supportsStreams; |
| } |
| |
| /* it is an error if any endpoint in endpoints does not support streams */ |
| if (0 == num_streams) |
| return LIBUSB_ERROR_INVALID_PARAM; |
| |
| /* create the streams */ |
| for (i = 0 ; i < num_endpoints ; ++i) { |
| (void) ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface); |
| |
| rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, num_streams); |
| if (kIOReturnSuccess != rc) |
| return darwin_to_libusb(rc); |
| } |
| |
| assert(num_streams <= INT_MAX); |
| return (int)num_streams; |
| } |
| |
| static int darwin_free_streams (struct libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) { |
| struct darwin_interface *cInterface; |
| UInt32 supportsStreams; |
| uint8_t pipeRef; |
| int rc; |
| |
| for (int i = 0 ; i < num_endpoints ; ++i) { |
| if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) |
| return rc; |
| |
| (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams); |
| if (0 == supportsStreams) |
| return LIBUSB_ERROR_INVALID_PARAM; |
| |
| rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, 0); |
| if (kIOReturnSuccess != rc) |
| return darwin_to_libusb(rc); |
| } |
| |
| return LIBUSB_SUCCESS; |
| } |
| #endif |
| |
| #if InterfaceVersion >= 700 |
| |
| /* macOS APIs for getting entitlement values */ |
| |
| #if TARGET_OS_OSX |
| #include <Security/Security.h> |
| #else |
| typedef struct __SecTask *SecTaskRef; |
| extern SecTaskRef SecTaskCreateFromSelf(CFAllocatorRef allocator); |
| extern CFTypeRef SecTaskCopyValueForEntitlement(SecTaskRef task, CFStringRef entitlement, CFErrorRef *error); |
| #endif |
| |
| static bool darwin_has_capture_entitlements (void) { |
| SecTaskRef task; |
| CFTypeRef value; |
| bool entitled; |
| |
| task = SecTaskCreateFromSelf (kCFAllocatorDefault); |
| if (task == NULL) { |
| return false; |
| } |
| value = SecTaskCopyValueForEntitlement(task, CFSTR("com.apple.vm.device-access"), NULL); |
| CFRelease (task); |
| entitled = value && (CFGetTypeID (value) == CFBooleanGetTypeID ()) && CFBooleanGetValue (value); |
| if (value) { |
| CFRelease (value); |
| } |
| return entitled; |
| } |
| |
| static int darwin_reload_device (struct libusb_device_handle *dev_handle) { |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| enum libusb_error err; |
| |
| usbi_mutex_lock(&darwin_cached_devices_lock); |
| (*(dpriv->device))->Release(dpriv->device); |
| dpriv->device = darwin_device_from_service (HANDLE_CTX (dev_handle), dpriv->service); |
| if (!dpriv->device) { |
| err = LIBUSB_ERROR_NO_DEVICE; |
| } else { |
| err = LIBUSB_SUCCESS; |
| } |
| usbi_mutex_unlock(&darwin_cached_devices_lock); |
| |
| return err; |
| } |
| |
| /* On macOS, we capture an entire device at once, not individual interfaces. */ |
| |
| static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, uint8_t interface) { |
| UNUSED(interface); |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| IOReturn kresult; |
| enum libusb_error err; |
| struct libusb_context *ctx = HANDLE_CTX (dev_handle); |
| |
| if (HAS_CAPTURE_DEVICE()) { |
| } else { |
| return LIBUSB_ERROR_NOT_SUPPORTED; |
| } |
| |
| if (dpriv->capture_count == 0) { |
| usbi_dbg (ctx, "attempting to detach kernel driver from device"); |
| |
| if (darwin_has_capture_entitlements ()) { |
| /* request authorization */ |
| kresult = IOServiceAuthorize (dpriv->service, kIOServiceInteractionAllowed); |
| if (kresult != kIOReturnSuccess) { |
| usbi_warn (ctx, "IOServiceAuthorize: %s", darwin_error_str(kresult)); |
| return darwin_to_libusb (kresult); |
| } |
| |
| /* we need start() to be called again for authorization status to refresh */ |
| err = darwin_reload_device (dev_handle); |
| if (err != LIBUSB_SUCCESS) { |
| return err; |
| } |
| } else { |
| usbi_info (ctx, "no capture entitlements. may not be able to detach the kernel driver for this device"); |
| if (0 != geteuid()) { |
| usbi_warn (ctx, "USB device capture requires either an entitlement (com.apple.vm.device-access) or root privilege"); |
| return LIBUSB_ERROR_ACCESS; |
| } |
| } |
| |
| /* reset device to release existing drivers */ |
| err = darwin_reenumerate_device (dev_handle, true); |
| if (err != LIBUSB_SUCCESS) { |
| return err; |
| } |
| } |
| dpriv->capture_count++; |
| return LIBUSB_SUCCESS; |
| } |
| |
| |
| static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, uint8_t interface) { |
| UNUSED(interface); |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| |
| if (HAS_CAPTURE_DEVICE()) { |
| } else { |
| return LIBUSB_ERROR_NOT_SUPPORTED; |
| } |
| |
| dpriv->capture_count--; |
| if (dpriv->capture_count > 0) { |
| return LIBUSB_SUCCESS; |
| } |
| |
| usbi_dbg (HANDLE_CTX (dev_handle), "reenumerating device for kernel driver attach"); |
| |
| /* reset device to attach kernel drivers */ |
| return darwin_reenumerate_device (dev_handle, false); |
| } |
| |
| static int darwin_capture_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface) { |
| enum libusb_error ret; |
| if (dev_handle->auto_detach_kernel_driver && darwin_kernel_driver_active(dev_handle, iface)) { |
| ret = darwin_detach_kernel_driver (dev_handle, iface); |
| if (ret != LIBUSB_SUCCESS) { |
| usbi_info (HANDLE_CTX (dev_handle), "failed to auto-detach the kernel driver for this device, ret=%d", ret); |
| } |
| } |
| |
| return darwin_claim_interface (dev_handle, iface); |
| } |
| |
| static int darwin_capture_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface) { |
| enum libusb_error ret; |
| struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); |
| |
| ret = darwin_release_interface (dev_handle, iface); |
| if (ret != LIBUSB_SUCCESS) { |
| return ret; |
| } |
| |
| if (dev_handle->auto_detach_kernel_driver && dpriv->capture_count > 0) { |
| ret = darwin_attach_kernel_driver (dev_handle, iface); |
| if (LIBUSB_SUCCESS != ret) { |
| usbi_info (HANDLE_CTX (dev_handle), "on attempt to reattach the kernel driver got ret=%d", ret); |
| } |
| /* ignore the error as the interface was successfully released */ |
| } |
| |
| return LIBUSB_SUCCESS; |
| } |
| |
| #endif |
| |
| const struct usbi_os_backend usbi_backend = { |
| .name = "Darwin", |
| .caps = USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER, |
| .init = darwin_init, |
| .exit = darwin_exit, |
| .get_active_config_descriptor = darwin_get_active_config_descriptor, |
| .get_config_descriptor = darwin_get_config_descriptor, |
| .hotplug_poll = darwin_hotplug_poll, |
| |
| .open = darwin_open, |
| .close = darwin_close, |
| .get_configuration = darwin_get_configuration, |
| .set_configuration = darwin_set_configuration, |
| |
| .set_interface_altsetting = darwin_set_interface_altsetting, |
| .clear_halt = darwin_clear_halt, |
| .reset_device = darwin_reset_device, |
| |
| #if InterfaceVersion >= 550 |
| .alloc_streams = darwin_alloc_streams, |
| .free_streams = darwin_free_streams, |
| #endif |
| |
| .kernel_driver_active = darwin_kernel_driver_active, |
| |
| #if InterfaceVersion >= 700 |
| .detach_kernel_driver = darwin_detach_kernel_driver, |
| .attach_kernel_driver = darwin_attach_kernel_driver, |
| .claim_interface = darwin_capture_claim_interface, |
| .release_interface = darwin_capture_release_interface, |
| #else |
| .claim_interface = darwin_claim_interface, |
| .release_interface = darwin_release_interface, |
| #endif |
| |
| .destroy_device = darwin_destroy_device, |
| |
| .submit_transfer = darwin_submit_transfer, |
| .cancel_transfer = darwin_cancel_transfer, |
| |
| .handle_transfer_completion = darwin_handle_transfer_completion, |
| |
| .device_priv_size = sizeof(struct darwin_device_priv), |
| .device_handle_priv_size = sizeof(struct darwin_device_handle_priv), |
| .transfer_priv_size = sizeof(struct darwin_transfer_priv), |
| }; |