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-rw-r--r--daemon/usb-linux.c598
1 files changed, 0 insertions, 598 deletions
diff --git a/daemon/usb-linux.c b/daemon/usb-linux.c
deleted file mode 100644
index 334d967..0000000
--- a/daemon/usb-linux.c
+++ /dev/null
@@ -1,598 +0,0 @@
-/*
- usbmuxd - iPhone/iPod Touch USB multiplex server daemon
-
-Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
-Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
-Copyright (C) 2009 Martin Szulecki <opensuse@sukimashita.com>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 or version 3.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-
-#include <libusb.h>
-
-#include "usb.h"
-#include "log.h"
-#include "device.h"
-
-// interval for device connection/disconnection polling, in milliseconds
-// we need this because there is currently no asynchronous device discovery mechanism in libusb
-#define DEVICE_POLL_TIME 1000
-
-struct usb_device {
- libusb_device_handle *dev;
- uint8_t bus, address;
- uint16_t vid, pid;
- char serial[256];
- int alive;
- uint8_t interface, ep_in, ep_out;
- struct libusb_transfer *rx_xfer;
- struct collection tx_xfers;
- int wMaxPacketSize;
-};
-
-static struct collection device_list;
-
-static struct timeval next_dev_poll_time;
-
-static int devlist_failures;
-static int device_polling;
-
-static void usb_disconnect(struct usb_device *dev)
-{
- if(!dev->dev) {
- return;
- }
-
- // kill the rx xfer and tx xfers and try to make sure the callbacks get called before we free the device
- if(dev->rx_xfer) {
- usbmuxd_log(LL_DEBUG, "usb_disconnect: cancelling RX xfer");
- libusb_cancel_transfer(dev->rx_xfer);
- }
- FOREACH(struct libusb_transfer *xfer, &dev->tx_xfers) {
- usbmuxd_log(LL_DEBUG, "usb_disconnect: cancelling TX xfer %p", xfer);
- libusb_cancel_transfer(xfer);
- } ENDFOREACH
-
- while(dev->rx_xfer || collection_count(&dev->tx_xfers)) {
- struct timeval tv;
- int res;
-
- tv.tv_sec = 0;
- tv.tv_usec = 1000;
- if((res = libusb_handle_events_timeout(NULL, &tv)) < 0) {
- usbmuxd_log(LL_ERROR, "libusb_handle_events_timeout for usb_disconnect failed: %d", res);
- break;
- }
- }
- collection_free(&dev->tx_xfers);
- libusb_release_interface(dev->dev, dev->interface);
- libusb_close(dev->dev);
- dev->dev = NULL;
- collection_remove(&device_list, dev);
- free(dev);
-}
-
-static void tx_callback(struct libusb_transfer *xfer)
-{
- struct usb_device *dev = xfer->user_data;
- usbmuxd_log(LL_SPEW, "TX callback dev %d-%d len %d -> %d status %d", dev->bus, dev->address, xfer->length, xfer->actual_length, xfer->status);
- if(xfer->status != LIBUSB_TRANSFER_COMPLETED) {
- switch(xfer->status) {
- case LIBUSB_TRANSFER_COMPLETED: //shut up compiler
- case LIBUSB_TRANSFER_ERROR:
- // funny, this happens when we disconnect the device while waiting for a transfer, sometimes
- usbmuxd_log(LL_INFO, "Device %d-%d TX aborted due to error or disconnect", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_TIMED_OUT:
- usbmuxd_log(LL_ERROR, "TX transfer timed out for device %d-%d", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_CANCELLED:
- usbmuxd_log(LL_DEBUG, "Device %d-%d TX transfer cancelled", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_STALL:
- usbmuxd_log(LL_ERROR, "TX transfer stalled for device %d-%d", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_NO_DEVICE:
- // other times, this happens, and also even when we abort the transfer after device removal
- usbmuxd_log(LL_INFO, "Device %d-%d TX aborted due to disconnect", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_OVERFLOW:
- usbmuxd_log(LL_ERROR, "TX transfer overflow for device %d-%d", dev->bus, dev->address);
- break;
- // and nothing happens (this never gets called) if the device is freed after a disconnect! (bad)
- }
- // we can't usb_disconnect here due to a deadlock, so instead mark it as dead and reap it after processing events
- // we'll do device_remove there too
- dev->alive = 0;
- }
- if(xfer->buffer)
- free(xfer->buffer);
- collection_remove(&dev->tx_xfers, xfer);
- libusb_free_transfer(xfer);
-}
-
-int usb_send(struct usb_device *dev, const unsigned char *buf, int length)
-{
- int res;
- struct libusb_transfer *xfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(xfer, dev->dev, dev->ep_out, (void*)buf, length, tx_callback, dev, 0);
- if((res = libusb_submit_transfer(xfer)) < 0) {
- usbmuxd_log(LL_ERROR, "Failed to submit TX transfer %p len %d to device %d-%d: %d", buf, length, dev->bus, dev->address, res);
- libusb_free_transfer(xfer);
- return res;
- }
- collection_add(&dev->tx_xfers, xfer);
- if (length % dev->wMaxPacketSize == 0) {
- usbmuxd_log(LL_DEBUG, "Send ZLP");
- // Send Zero Length Packet
- xfer = libusb_alloc_transfer(0);
- void *buffer = malloc(1);
- libusb_fill_bulk_transfer(xfer, dev->dev, dev->ep_out, buffer, 0, tx_callback, dev, 0);
- if((res = libusb_submit_transfer(xfer)) < 0) {
- usbmuxd_log(LL_ERROR, "Failed to submit TX ZLP transfer to device %d-%d: %d", dev->bus, dev->address, res);
- libusb_free_transfer(xfer);
- return res;
- }
- collection_add(&dev->tx_xfers, xfer);
- }
- return 0;
-}
-
-static void rx_callback(struct libusb_transfer *xfer)
-{
- struct usb_device *dev = xfer->user_data;
- usbmuxd_log(LL_SPEW, "RX callback dev %d-%d len %d status %d", dev->bus, dev->address, xfer->actual_length, xfer->status);
- if(xfer->status == LIBUSB_TRANSFER_COMPLETED) {
- device_data_input(dev, xfer->buffer, xfer->actual_length);
- libusb_submit_transfer(xfer);
- } else {
- switch(xfer->status) {
- case LIBUSB_TRANSFER_COMPLETED: //shut up compiler
- case LIBUSB_TRANSFER_ERROR:
- // funny, this happens when we disconnect the device while waiting for a transfer, sometimes
- usbmuxd_log(LL_INFO, "Device %d-%d RX aborted due to error or disconnect", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_TIMED_OUT:
- usbmuxd_log(LL_ERROR, "RX transfer timed out for device %d-%d", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_CANCELLED:
- usbmuxd_log(LL_DEBUG, "Device %d-%d RX transfer cancelled", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_STALL:
- usbmuxd_log(LL_ERROR, "RX transfer stalled for device %d-%d", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_NO_DEVICE:
- // other times, this happens, and also even when we abort the transfer after device removal
- usbmuxd_log(LL_INFO, "Device %d-%d RX aborted due to disconnect", dev->bus, dev->address);
- break;
- case LIBUSB_TRANSFER_OVERFLOW:
- usbmuxd_log(LL_ERROR, "RX transfer overflow for device %d-%d", dev->bus, dev->address);
- break;
- // and nothing happens (this never gets called) if the device is freed after a disconnect! (bad)
- }
- free(xfer->buffer);
- dev->rx_xfer = NULL;
- libusb_free_transfer(xfer);
- // we can't usb_disconnect here due to a deadlock, so instead mark it as dead and reap it after processing events
- // we'll do device_remove there too
- dev->alive = 0;
- }
-}
-
-static int start_rx(struct usb_device *dev)
-{
- int res;
- void *buf;
- dev->rx_xfer = libusb_alloc_transfer(0);
- buf = malloc(USB_MRU);
- libusb_fill_bulk_transfer(dev->rx_xfer, dev->dev, dev->ep_in, buf, USB_MRU, rx_callback, dev, 0);
- if((res = libusb_submit_transfer(dev->rx_xfer)) != 0) {
- usbmuxd_log(LL_ERROR, "Failed to submit RX transfer to device %d-%d: %d", dev->bus, dev->address, res);
- libusb_free_transfer(dev->rx_xfer);
- dev->rx_xfer = NULL;
- return res;
- }
- return 0;
-}
-
-int usb_discover(void)
-{
- int cnt, i, j, res;
- int valid_count = 0;
- libusb_device **devs;
-
- cnt = libusb_get_device_list(NULL, &devs);
- if(cnt < 0) {
- usbmuxd_log(LL_WARNING, "Could not get device list: %d", cnt);
- devlist_failures++;
- // sometimes libusb fails getting the device list if you've just removed something
- if(devlist_failures > 5) {
- usbmuxd_log(LL_FATAL, "Too many errors getting device list\n");
- return cnt;
- } else {
- gettimeofday(&next_dev_poll_time, NULL);
- next_dev_poll_time.tv_usec += DEVICE_POLL_TIME * 1000;
- next_dev_poll_time.tv_sec += next_dev_poll_time.tv_usec / 1000000;
- next_dev_poll_time.tv_usec = next_dev_poll_time.tv_usec % 1000000;
- return 0;
- }
- }
- devlist_failures = 0;
-
- usbmuxd_log(LL_SPEW, "usb_discover: scanning %d devices", cnt);
-
- FOREACH(struct usb_device *usbdev, &device_list) {
- usbdev->alive = 0;
- } ENDFOREACH
-
- for(i=0; i<cnt; i++) {
- // the following are non-blocking operations on the device list
- libusb_device *dev = devs[i];
- uint8_t bus = libusb_get_bus_number(dev);
- uint8_t address = libusb_get_device_address(dev);
- struct libusb_device_descriptor devdesc;
- int found = 0;
- FOREACH(struct usb_device *usbdev, &device_list) {
- if(usbdev->bus == bus && usbdev->address == address) {
- valid_count++;
- usbdev->alive = 1;
- found = 1;
- break;
- }
- } ENDFOREACH
- if(found)
- continue; //device already found
- if((res = libusb_get_device_descriptor(dev, &devdesc)) != 0) {
- usbmuxd_log(LL_WARNING, "Could not get device descriptor for device %d-%d: %d", bus, address, res);
- continue;
- }
- if(devdesc.idVendor != VID_APPLE)
- continue;
- if((devdesc.idProduct < PID_RANGE_LOW) ||
- (devdesc.idProduct > PID_RANGE_MAX))
- continue;
- libusb_device_handle *handle;
- usbmuxd_log(LL_INFO, "Found new device with v/p %04x:%04x at %d-%d", devdesc.idVendor, devdesc.idProduct, bus, address);
- // potentially blocking operations follow; they will only run when new devices are detected, which is acceptable
- if((res = libusb_open(dev, &handle)) != 0) {
- usbmuxd_log(LL_WARNING, "Could not open device %d-%d: %d", bus, address, res);
- continue;
- }
- int current_config = 0;
- if((res = libusb_get_configuration(handle, &current_config)) != 0) {
- usbmuxd_log(LL_WARNING, "Could not get configuration for device %d-%d: %d", bus, address, res);
- libusb_close(handle);
- continue;
- }
- if (current_config != devdesc.bNumConfigurations) {
- struct libusb_config_descriptor *config;
- if((res = libusb_get_active_config_descriptor(dev, &config)) != 0) {
- usbmuxd_log(LL_NOTICE, "Could not get old configuration descriptor for device %d-%d: %d", bus, address, res);
- } else {
- for(j=0; j<config->bNumInterfaces; j++) {
- const struct libusb_interface_descriptor *intf = &config->interface[j].altsetting[0];
- if((res = libusb_kernel_driver_active(handle, intf->bInterfaceNumber)) < 0) {
- usbmuxd_log(LL_NOTICE, "Could not check kernel ownership of interface %d for device %d-%d: %d", intf->bInterfaceNumber, bus, address, res);
- continue;
- }
- if(res == 1) {
- usbmuxd_log(LL_INFO, "Detaching kernel driver for device %d-%d, interface %d", bus, address, intf->bInterfaceNumber);
- if((res = libusb_detach_kernel_driver(handle, intf->bInterfaceNumber)) < 0) {
- usbmuxd_log(LL_WARNING, "Could not detach kernel driver (%d), configuration change will probably fail!", res);
- continue;
- }
- }
- }
- libusb_free_config_descriptor(config);
- }
- if((res = libusb_set_configuration(handle, devdesc.bNumConfigurations)) != 0) {
- usbmuxd_log(LL_WARNING, "Could not set configuration %d for device %d-%d: %d", devdesc.bNumConfigurations, bus, address, res);
- libusb_close(handle);
- continue;
- }
- }
-
- struct libusb_config_descriptor *config;
- if((res = libusb_get_active_config_descriptor(dev, &config)) != 0) {
- usbmuxd_log(LL_WARNING, "Could not get configuration descriptor for device %d-%d: %d", bus, address, res);
- libusb_close(handle);
- continue;
- }
-
- struct usb_device *usbdev;
- usbdev = malloc(sizeof(struct usb_device));
- memset(usbdev, 0, sizeof(*usbdev));
-
- for(j=0; j<config->bNumInterfaces; j++) {
- const struct libusb_interface_descriptor *intf = &config->interface[j].altsetting[0];
- if(intf->bInterfaceClass != INTERFACE_CLASS ||
- intf->bInterfaceSubClass != INTERFACE_SUBCLASS ||
- intf->bInterfaceProtocol != INTERFACE_PROTOCOL)
- continue;
- if(intf->bNumEndpoints != 2) {
- usbmuxd_log(LL_WARNING, "Endpoint count mismatch for interface %d of device %d-%d", intf->bInterfaceNumber, bus, address);
- continue;
- }
- if((intf->endpoint[0].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_OUT &&
- (intf->endpoint[1].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_IN) {
- usbdev->interface = intf->bInterfaceNumber;
- usbdev->ep_out = intf->endpoint[0].bEndpointAddress;
- usbdev->ep_in = intf->endpoint[1].bEndpointAddress;
- usbmuxd_log(LL_INFO, "Found interface %d with endpoints %02x/%02x for device %d-%d", usbdev->interface, usbdev->ep_out, usbdev->ep_in, bus, address);
- break;
- } else if((intf->endpoint[1].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_OUT &&
- (intf->endpoint[0].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_IN) {
- usbdev->interface = intf->bInterfaceNumber;
- usbdev->ep_out = intf->endpoint[1].bEndpointAddress;
- usbdev->ep_in = intf->endpoint[0].bEndpointAddress;
- usbmuxd_log(LL_INFO, "Found interface %d with swapped endpoints %02x/%02x for device %d-%d", usbdev->interface, usbdev->ep_out, usbdev->ep_in, bus, address);
- break;
- } else {
- usbmuxd_log(LL_WARNING, "Endpoint type mismatch for interface %d of device %d-%d", intf->bInterfaceNumber, bus, address);
- }
- }
-
- if(j == config->bNumInterfaces) {
- usbmuxd_log(LL_WARNING, "Could not find a suitable USB interface for device %d-%d", bus, address);
- libusb_free_config_descriptor(config);
- libusb_close(handle);
- free(usbdev);
- continue;
- }
-
- libusb_free_config_descriptor(config);
-
- if((res = libusb_claim_interface(handle, usbdev->interface)) != 0) {
- usbmuxd_log(LL_WARNING, "Could not claim interface %d for device %d-%d: %d", usbdev->interface, bus, address, res);
- libusb_close(handle);
- free(usbdev);
- continue;
- }
-
- if((res = libusb_get_string_descriptor_ascii(handle, devdesc.iSerialNumber, (uint8_t *)usbdev->serial, 256)) <= 0) {
- usbmuxd_log(LL_WARNING, "Could not get serial number for device %d-%d: %d", bus, address, res);
- libusb_release_interface(handle, usbdev->interface);
- libusb_close(handle);
- free(usbdev);
- continue;
- }
- usbdev->serial[res] = 0;
- usbdev->bus = bus;
- usbdev->address = address;
- usbdev->vid = devdesc.idVendor;
- usbdev->pid = devdesc.idProduct;
- usbdev->dev = handle;
- usbdev->alive = 1;
- usbdev->wMaxPacketSize = libusb_get_max_packet_size(dev, usbdev->ep_out);
- if (usbdev->wMaxPacketSize <= 0) {
- usbmuxd_log(LL_ERROR, "Could not determine wMaxPacketSize for device %d-%d, setting to 64", usbdev->bus, usbdev->address);
- usbdev->wMaxPacketSize = 64;
- } else {
- usbmuxd_log(LL_INFO, "Using wMaxPacketSize=%d for device %d-%d", usbdev->wMaxPacketSize, usbdev->bus, usbdev->address);
- }
-
- collection_init(&usbdev->tx_xfers);
-
- collection_add(&device_list, usbdev);
-
- if(device_add(usbdev) < 0) {
- usb_disconnect(usbdev);
- continue;
- }
- if(start_rx(usbdev) < 0) {
- device_remove(usbdev);
- usb_disconnect(usbdev);
- continue;
- }
- valid_count++;
- }
- FOREACH(struct usb_device *usbdev, &device_list) {
- if(!usbdev->alive) {
- device_remove(usbdev);
- usb_disconnect(usbdev);
- }
- } ENDFOREACH
-
- libusb_free_device_list(devs, 1);
-
- gettimeofday(&next_dev_poll_time, NULL);
- next_dev_poll_time.tv_usec += DEVICE_POLL_TIME * 1000;
- next_dev_poll_time.tv_sec += next_dev_poll_time.tv_usec / 1000000;
- next_dev_poll_time.tv_usec = next_dev_poll_time.tv_usec % 1000000;
-
- return valid_count;
-}
-
-const char *usb_get_serial(struct usb_device *dev)
-{
- if(!dev->dev) {
- return NULL;
- }
- return dev->serial;
-}
-
-uint32_t usb_get_location(struct usb_device *dev)
-{
- if(!dev->dev) {
- return 0;
- }
- return (dev->bus << 16) | dev->address;
-}
-
-uint16_t usb_get_pid(struct usb_device *dev)
-{
- if(!dev->dev) {
- return 0;
- }
- return dev->pid;
-}
-
-void usb_get_fds(struct fdlist *list)
-{
- const struct libusb_pollfd **usbfds;
- const struct libusb_pollfd **p;
- usbfds = libusb_get_pollfds(NULL);
- if(!usbfds) {
- usbmuxd_log(LL_ERROR, "libusb_get_pollfds failed");
- return;
- }
- p = usbfds;
- while(*p) {
- fdlist_add(list, FD_USB, (*p)->fd, (*p)->events);
- p++;
- }
- free(usbfds);
-}
-
-void usb_autodiscover(int enable)
-{
- usbmuxd_log(LL_DEBUG, "usb polling enable: %d", enable);
- device_polling = enable;
-}
-
-static int dev_poll_remain_ms(void)
-{
- int msecs;
- struct timeval tv;
- if(!device_polling)
- return 100000; // devices will never be polled if this is > 0
- gettimeofday(&tv, NULL);
- msecs = (next_dev_poll_time.tv_sec - tv.tv_sec) * 1000;
- msecs += (next_dev_poll_time.tv_usec - tv.tv_usec) / 1000;
- if(msecs < 0)
- return 0;
- return msecs;
-}
-
-int usb_get_timeout(void)
-{
- struct timeval tv;
- int msec;
- int res;
- int pollrem;
- pollrem = dev_poll_remain_ms();
- res = libusb_get_next_timeout(NULL, &tv);
- if(res == 0)
- return pollrem;
- if(res < 0) {
- usbmuxd_log(LL_ERROR, "libusb_get_next_timeout failed: %d", res);
- return pollrem;
- }
- msec = tv.tv_sec * 1000;
- msec += tv.tv_usec / 1000;
- if(msec > pollrem)
- return pollrem;
- return msec;
-}
-
-int usb_process(void)
-{
- int res;
- struct timeval tv;
- tv.tv_sec = tv.tv_usec = 0;
- res = libusb_handle_events_timeout(NULL, &tv);
- if(res < 0) {
- usbmuxd_log(LL_ERROR, "libusb_handle_events_timeout failed: %d", res);
- return res;
- }
- // reap devices marked dead due to an RX error
- FOREACH(struct usb_device *usbdev, &device_list) {
- if(!usbdev->alive) {
- device_remove(usbdev);
- usb_disconnect(usbdev);
- }
- } ENDFOREACH
-
- if(dev_poll_remain_ms() <= 0) {
- res = usb_discover();
- if(res < 0) {
- usbmuxd_log(LL_ERROR, "usb_discover failed: %d", res);
- return res;
- }
- }
- return 0;
-}
-
-int usb_process_timeout(int msec)
-{
- int res;
- struct timeval tleft, tcur, tfin;
- gettimeofday(&tcur, NULL);
- tfin.tv_sec = tcur.tv_sec + (msec / 1000);
- tfin.tv_usec = tcur.tv_usec + (msec % 1000) * 1000;
- tfin.tv_sec += tfin.tv_usec / 1000000;
- tfin.tv_usec %= 1000000;
- while((tfin.tv_sec > tcur.tv_sec) || ((tfin.tv_sec == tcur.tv_sec) && (tfin.tv_usec > tcur.tv_usec))) {
- tleft.tv_sec = tfin.tv_sec - tcur.tv_sec;
- tleft.tv_usec = tfin.tv_usec - tcur.tv_usec;
- if(tleft.tv_usec < 0) {
- tleft.tv_usec += 1000000;
- tleft.tv_sec -= 1;
- }
- res = libusb_handle_events_timeout(NULL, &tleft);
- if(res < 0) {
- usbmuxd_log(LL_ERROR, "libusb_handle_events_timeout failed: %d", res);
- return res;
- }
- // reap devices marked dead due to an RX error
- FOREACH(struct usb_device *usbdev, &device_list) {
- if(!usbdev->alive) {
- device_remove(usbdev);
- usb_disconnect(usbdev);
- }
- } ENDFOREACH
- gettimeofday(&tcur, NULL);
- }
- return 0;
-}
-
-int usb_init(void)
-{
- int res;
- usbmuxd_log(LL_DEBUG, "usb_init for linux / libusb 1.0");
-
- devlist_failures = 0;
- device_polling = 1;
- res = libusb_init(NULL);
- //libusb_set_debug(NULL, 3);
- if(res != 0) {
- usbmuxd_log(LL_FATAL, "libusb_init failed: %d", res);
- return -1;
- }
-
- collection_init(&device_list);
-
- return usb_discover();
-}
-
-void usb_shutdown(void)
-{
- usbmuxd_log(LL_DEBUG, "usb_shutdown");
- FOREACH(struct usb_device *usbdev, &device_list) {
- device_remove(usbdev);
- usb_disconnect(usbdev);
- } ENDFOREACH
- collection_free(&device_list);
- libusb_exit(NULL);
-}
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