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platform_system_core/adb/usb_osx.cpp

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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define TRACE_TAG USB
#include "sysdeps.h"
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOCFPlugIn.h>
#include <IOKit/usb/IOUSBLib.h>
#include <IOKit/IOMessage.h>
#include <mach/mach_port.h>
#include <inttypes.h>
#include <stdio.h>
#include <android-base/logging.h>
#include <android-base/stringprintf.h>
#include "adb.h"
#include "transport.h"
#define DBG D
// There's no strerror equivalent for the errors returned by IOKit.
// https://developer.apple.com/library/mac/documentation/DeviceDrivers/Conceptual/AccessingHardware/AH_Handling_Errors/AH_Handling_Errors.html
// Search the web for "IOReturn.h" to find a complete up to date list.
static IONotificationPortRef notificationPort = 0;
static io_iterator_t notificationIterator;
struct usb_handle
{
UInt8 bulkIn;
UInt8 bulkOut;
IOUSBInterfaceInterface190** interface;
io_object_t usbNotification;
unsigned int zero_mask;
};
static CFRunLoopRef currentRunLoop = 0;
static pthread_mutex_t start_lock;
static pthread_cond_t start_cond;
static void AndroidInterfaceAdded(void *refCon, io_iterator_t iterator);
static void AndroidInterfaceNotify(void *refCon, io_iterator_t iterator,
natural_t messageType,
void *messageArgument);
static usb_handle* CheckInterface(IOUSBInterfaceInterface190 **iface,
UInt16 vendor, UInt16 product);
static int
InitUSB()
{
CFMutableDictionaryRef matchingDict;
CFRunLoopSourceRef runLoopSource;
//* To set up asynchronous notifications, create a notification port and
//* add its run loop event source to the program's run loop
notificationPort = IONotificationPortCreate(kIOMasterPortDefault);
runLoopSource = IONotificationPortGetRunLoopSource(notificationPort);
CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopDefaultMode);
//* Create our matching dictionary to find the Android device's
//* adb interface
//* IOServiceAddMatchingNotification consumes the reference, so we do
//* not need to release this
matchingDict = IOServiceMatching(kIOUSBInterfaceClassName);
if (!matchingDict) {
LOG(ERROR) << "Couldn't create USB matching dictionary.";
return -1;
}
//* We have to get notifications for all potential candidates and test them
//* at connection time because the matching rules don't allow for a
//* USB interface class of 0xff for class+subclass+protocol matches
//* See https://developer.apple.com/library/mac/qa/qa1076/_index.html
IOServiceAddMatchingNotification(
notificationPort,
kIOFirstMatchNotification,
matchingDict,
AndroidInterfaceAdded,
NULL,
&notificationIterator);
//* Iterate over set of matching interfaces to access already-present
//* devices and to arm the notification
AndroidInterfaceAdded(NULL, notificationIterator);
return 0;
}
static void
AndroidInterfaceAdded(void *refCon, io_iterator_t iterator)
{
kern_return_t kr;
io_service_t usbDevice;
io_service_t usbInterface;
IOCFPlugInInterface **plugInInterface = NULL;
IOUSBInterfaceInterface220 **iface = NULL;
IOUSBDeviceInterface197 **dev = NULL;
HRESULT result;
SInt32 score;
uint32_t locationId;
UInt8 if_class, subclass, protocol;
UInt16 vendor;
UInt16 product;
UInt8 serialIndex;
char serial[256];
char devpathBuf[64];
char *devpath = NULL;
while ((usbInterface = IOIteratorNext(iterator))) {
//* Create an intermediate interface plugin
kr = IOCreatePlugInInterfaceForService(usbInterface,
kIOUSBInterfaceUserClientTypeID,
kIOCFPlugInInterfaceID,
&plugInInterface, &score);
IOObjectRelease(usbInterface);
if ((kIOReturnSuccess != kr) || (!plugInInterface)) {
LOG(ERROR) << "Unable to create an interface plug-in (" << std::hex << kr << ")";
continue;
}
//* This gets us the interface object
result = (*plugInInterface)->QueryInterface(
plugInInterface,
CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID), (LPVOID*)&iface);
//* We only needed the plugin to get the interface, so discard it
(*plugInInterface)->Release(plugInInterface);
if (result || !iface) {
LOG(ERROR) << "Couldn't query the interface (" << std::hex << result << ")";
continue;
}
kr = (*iface)->GetInterfaceClass(iface, &if_class);
kr = (*iface)->GetInterfaceSubClass(iface, &subclass);
kr = (*iface)->GetInterfaceProtocol(iface, &protocol);
if(if_class != ADB_CLASS || subclass != ADB_SUBCLASS || protocol != ADB_PROTOCOL) {
// Ignore non-ADB devices.
LOG(DEBUG) << "Ignoring interface with incorrect class/subclass/protocol - " << if_class
<< ", " << subclass << ", " << protocol;
(*iface)->Release(iface);
continue;
}
//* this gets us an ioservice, with which we will find the actual
//* device; after getting a plugin, and querying the interface, of
//* course.
//* Gotta love OS X
kr = (*iface)->GetDevice(iface, &usbDevice);
if (kIOReturnSuccess != kr || !usbDevice) {
LOG(ERROR) << "Couldn't grab device from interface (" << std::hex << kr << ")";
continue;
}
plugInInterface = NULL;
score = 0;
//* create an intermediate device plugin
kr = IOCreatePlugInInterfaceForService(usbDevice,
kIOUSBDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&plugInInterface, &score);
//* only needed this to find the plugin
(void)IOObjectRelease(usbDevice);
if ((kIOReturnSuccess != kr) || (!plugInInterface)) {
LOG(ERROR) << "Unable to create a device plug-in (" << std::hex << kr << ")";
continue;
}
result = (*plugInInterface)->QueryInterface(plugInInterface,
CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID), (LPVOID*)&dev);
//* only needed this to query the plugin
(*plugInInterface)->Release(plugInInterface);
if (result || !dev) {
LOG(ERROR) << "Couldn't create a device interface (" << std::hex << result << ")";
continue;
}
//* Now after all that, we actually have a ref to the device and
//* the interface that matched our criteria
kr = (*dev)->GetDeviceVendor(dev, &vendor);
kr = (*dev)->GetDeviceProduct(dev, &product);
kr = (*dev)->GetLocationID(dev, &locationId);
if (kr == 0) {
snprintf(devpathBuf, sizeof(devpathBuf), "usb:%" PRIu32 "X", locationId);
devpath = devpathBuf;
}
kr = (*dev)->USBGetSerialNumberStringIndex(dev, &serialIndex);
if (serialIndex > 0) {
IOUSBDevRequest req;
UInt16 buffer[256];
UInt16 languages[128];
memset(languages, 0, sizeof(languages));
req.bmRequestType =
USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
req.bRequest = kUSBRqGetDescriptor;
req.wValue = (kUSBStringDesc << 8) | 0;
req.wIndex = 0;
req.pData = languages;
req.wLength = sizeof(languages);
kr = (*dev)->DeviceRequest(dev, &req);
if (kr == kIOReturnSuccess && req.wLenDone > 0) {
int langCount = (req.wLenDone - 2) / 2, lang;
for (lang = 1; lang <= langCount; lang++) {
memset(buffer, 0, sizeof(buffer));
memset(&req, 0, sizeof(req));
req.bmRequestType =
USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
req.bRequest = kUSBRqGetDescriptor;
req.wValue = (kUSBStringDesc << 8) | serialIndex;
req.wIndex = languages[lang];
req.pData = buffer;
req.wLength = sizeof(buffer);
kr = (*dev)->DeviceRequest(dev, &req);
if (kr == kIOReturnSuccess && req.wLenDone > 0) {
int i, count;
// skip first word, and copy the rest to the serial string,
// changing shorts to bytes.
count = (req.wLenDone - 1) / 2;
for (i = 0; i < count; i++)
serial[i] = buffer[i + 1];
serial[i] = 0;
break;
}
}
}
}
(*dev)->Release(dev);
LOG(INFO) << android::base::StringPrintf("Found vid=%04x pid=%04x serial=%s\n",
vendor, product, serial);
usb_handle* handle = CheckInterface((IOUSBInterfaceInterface190**)iface,
vendor, product);
if (handle == NULL) {
LOG(ERROR) << "Could not find device interface";
(*iface)->Release(iface);
continue;
}
LOG(DEBUG) << "AndroidDeviceAdded calling register_usb_transport";
register_usb_transport(handle, (serial[0] ? serial : NULL), devpath, 1);
// Register for an interest notification of this device being removed.
// Pass the reference to our private data as the refCon for the
// notification.
kr = IOServiceAddInterestNotification(notificationPort,
usbInterface,
kIOGeneralInterest,
AndroidInterfaceNotify,
handle,
&handle->usbNotification);
if (kIOReturnSuccess != kr) {
LOG(ERROR) << "Unable to create interest notification (" << std::hex << kr << ")";
}
}
}
static void
AndroidInterfaceNotify(void *refCon, io_service_t service, natural_t messageType, void *messageArgument)
{
usb_handle *handle = (usb_handle *)refCon;
if (messageType == kIOMessageServiceIsTerminated) {
if (!handle) {
LOG(ERROR) << "NULL handle";
return;
}
LOG(DEBUG) << "AndroidInterfaceNotify";
IOObjectRelease(handle->usbNotification);
usb_kick(handle);
}
}
// Used to clear both the endpoints before starting.
// When adb quits, we might clear the host endpoint but not the device.
// So we make sure both sides are clear before starting up.
static bool ClearPipeStallBothEnds(IOUSBInterfaceInterface190** interface, UInt8 bulkEp) {
IOReturn rc = (*interface)->ClearPipeStallBothEnds(interface, bulkEp);
if (rc != kIOReturnSuccess) {
LOG(ERROR) << "Could not clear pipe stall both ends: " << std::hex << rc;
return false;
}
return true;
}
//* TODO: simplify this further since we only register to get ADB interface
//* subclass+protocol events
static usb_handle*
CheckInterface(IOUSBInterfaceInterface190 **interface, UInt16 vendor, UInt16 product)
{
usb_handle* handle;
IOReturn kr;
UInt8 interfaceNumEndpoints, interfaceClass, interfaceSubClass, interfaceProtocol;
UInt8 endpoint;
//* Now open the interface. This will cause the pipes associated with
//* the endpoints in the interface descriptor to be instantiated
kr = (*interface)->USBInterfaceOpen(interface);
if (kr != kIOReturnSuccess) {
LOG(ERROR) << "Could not open interface: " << std::hex << kr;
return NULL;
}
//* Get the number of endpoints associated with this interface
kr = (*interface)->GetNumEndpoints(interface, &interfaceNumEndpoints);
if (kr != kIOReturnSuccess) {
LOG(ERROR) << "Unable to get number of endpoints: " << std::hex << kr;
goto err_get_num_ep;
}
//* Get interface class, subclass and protocol
if ((*interface)->GetInterfaceClass(interface, &interfaceClass) != kIOReturnSuccess ||
(*interface)->GetInterfaceSubClass(interface, &interfaceSubClass) != kIOReturnSuccess ||
(*interface)->GetInterfaceProtocol(interface, &interfaceProtocol) != kIOReturnSuccess) {
LOG(ERROR) << "Unable to get interface class, subclass and protocol";
goto err_get_interface_class;
}
//* check to make sure interface class, subclass and protocol match ADB
//* avoid opening mass storage endpoints
if (!is_adb_interface(vendor, product, interfaceClass, interfaceSubClass, interfaceProtocol)) {
goto err_bad_adb_interface;
}
handle = reinterpret_cast<usb_handle*>(calloc(1, sizeof(usb_handle)));
if (handle == nullptr) goto err_bad_adb_interface;
//* Iterate over the endpoints for this interface and find the first
//* bulk in/out pipes available. These will be our read/write pipes.
for (endpoint = 1; endpoint <= interfaceNumEndpoints; endpoint++) {
UInt8 transferType;
UInt16 maxPacketSize;
UInt8 interval;
UInt8 number;
UInt8 direction;
kr = (*interface)->GetPipeProperties(interface, endpoint, &direction,
&number, &transferType, &maxPacketSize, &interval);
if (kr != kIOReturnSuccess) {
LOG(ERROR) << "FindDeviceInterface - could not get pipe properties: "
<< std::hex << kr;
goto err_get_pipe_props;
}
if (kUSBBulk != transferType) continue;
if (kUSBIn == direction) {
handle->bulkIn = endpoint;
if (!ClearPipeStallBothEnds(interface, handle->bulkIn)) goto err_get_pipe_props;
}
if (kUSBOut == direction) {
handle->bulkOut = endpoint;
if (!ClearPipeStallBothEnds(interface, handle->bulkOut)) goto err_get_pipe_props;
}
handle->zero_mask = maxPacketSize - 1;
}
handle->interface = interface;
return handle;
err_get_pipe_props:
free(handle);
err_bad_adb_interface:
err_get_interface_class:
err_get_num_ep:
(*interface)->USBInterfaceClose(interface);
return NULL;
}
static void RunLoopThread(void* unused) {
adb_thread_setname("RunLoop");
InitUSB();
currentRunLoop = CFRunLoopGetCurrent();
// Signal the parent that we are running
adb_mutex_lock(&start_lock);
adb_cond_signal(&start_cond);
adb_mutex_unlock(&start_lock);
CFRunLoopRun();
currentRunLoop = 0;
IOObjectRelease(notificationIterator);
IONotificationPortDestroy(notificationPort);
LOG(DEBUG) << "RunLoopThread done";
}
static void usb_cleanup() {
LOG(DEBUG) << "usb_cleanup";
close_usb_devices();
if (currentRunLoop)
CFRunLoopStop(currentRunLoop);
}
void usb_init() {
static bool initialized = false;
if (!initialized) {
atexit(usb_cleanup);
adb_mutex_init(&start_lock, NULL);
adb_cond_init(&start_cond, NULL);
if (!adb_thread_create(RunLoopThread, nullptr)) {
fatal_errno("cannot create RunLoop thread");
}
// Wait for initialization to finish
adb_mutex_lock(&start_lock);
adb_cond_wait(&start_cond, &start_lock);
adb_mutex_unlock(&start_lock);
adb_mutex_destroy(&start_lock);
adb_cond_destroy(&start_cond);
initialized = true;
}
}
int usb_write(usb_handle *handle, const void *buf, int len)
{
IOReturn result;
if (!len)
return 0;
if (!handle)
return -1;
if (NULL == handle->interface) {
LOG(ERROR) << "usb_write interface was null";
return -1;
}
if (0 == handle->bulkOut) {
LOG(ERROR) << "bulkOut endpoint not assigned";
return -1;
}
result =
(*handle->interface)->WritePipe(handle->interface, handle->bulkOut, (void *)buf, len);
if ((result == 0) && (handle->zero_mask)) {
/* we need 0-markers and our transfer */
if(!(len & handle->zero_mask)) {
result =
(*handle->interface)->WritePipe(
handle->interface, handle->bulkOut, (void *)buf, 0);
}
}
if (0 == result)
return 0;
LOG(ERROR) << "usb_write failed with status: " << std::hex << result;
return -1;
}
int usb_read(usb_handle *handle, void *buf, int len)
{
IOReturn result;
UInt32 numBytes = len;
if (!len) {
return 0;
}
if (!handle) {
return -1;
}
if (NULL == handle->interface) {
LOG(ERROR) << "usb_read interface was null";
return -1;
}
if (0 == handle->bulkIn) {
LOG(ERROR) << "bulkIn endpoint not assigned";
return -1;
}
result = (*handle->interface)->ReadPipe(handle->interface, handle->bulkIn, buf, &numBytes);
if (kIOUSBPipeStalled == result) {
LOG(ERROR) << "Pipe stalled, clearing stall.\n";
(*handle->interface)->ClearPipeStall(handle->interface, handle->bulkIn);
result = (*handle->interface)->ReadPipe(handle->interface, handle->bulkIn, buf, &numBytes);
}
if (kIOReturnSuccess == result)
return 0;
else {
LOG(ERROR) << "usb_read failed with status: " << std::hex << result;
}
return -1;
}
int usb_close(usb_handle *handle)
{
return 0;
}
void usb_kick(usb_handle *handle)
{
LOG(INFO) << "Kicking handle";
/* release the interface */
if (!handle)
return;
if (handle->interface)
{
(*handle->interface)->USBInterfaceClose(handle->interface);
(*handle->interface)->Release(handle->interface);
handle->interface = 0;
}
}
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