static int
gp_libusb1_clear_halt_lib(GPPort *port, int ep)
{
unsigned char internal_ep;
C_PARAMS (port && port->pl->dh);
switch (ep) {
case GP_PORT_USB_ENDPOINT_IN :
internal_ep = port->settings.usb.inep;
break;
case GP_PORT_USB_ENDPOINT_OUT :
internal_ep = port->settings.usb.outep;
break;
case GP_PORT_USB_ENDPOINT_INT :
internal_ep = port->settings.usb.intep;
break;
default:
gp_port_set_error (port, "bad EndPoint argument 0x%x", ep);
return GP_ERROR_BAD_PARAMETERS;
}
C_LIBUSB (libusb_clear_halt(port->pl->dh, internal_ep), GP_ERROR_IO_USB_CLEAR_HALT);
return GP_OK;
}
static int
gp_libusb1_msg(GPPort *port, int request, int value, int index, char *bytes, int size, int flags, int default_error)
{
int handled = 0;
C_PARAMS (port && port->pl->dh);
C_LIBUSB (handled = libusb_control_transfer (port->pl->dh, flags, request, value, index,
(unsigned char*)bytes, size, port->timeout),
default_error);
return handled;
}
static int
gp_libusb1_reset(GPPort *port)
{
C_PARAMS (port && port->pl->dh);
/* earlier libusb 1 versions get crashes otherwise */
_close_async_interrupts(port);
C_LIBUSB (libusb_reset_device (port->pl->dh), GP_ERROR_IO);
return GP_OK;
}
static int
gp_libusb1_read(GPPort *port, char *bytes, int size)
{
int curread;
C_PARAMS (port && port->pl->dh);
C_LIBUSB (libusb_bulk_transfer (port->pl->dh, port->settings.usb.inep,
(unsigned char*)bytes, size, &curread, port->timeout),
GP_ERROR_IO_READ );
return curread;
}
static int
gp_libusb1_write (GPPort *port, const char *bytes, int size)
{
int curwritten;
C_PARAMS (port && port->pl->dh);
C_LIBUSB (libusb_bulk_transfer (port->pl->dh, port->settings.usb.outep,
(unsigned char*)bytes, size, &curwritten, port->timeout),
GP_ERROR_IO_WRITE);
return curwritten;
}
static int
gp_libusb1_read(GPPort *port, char *bytes, int size)
{
int curread;
C_PARAMS (port && port->pl->dh);
C_LIBUSB (libusb_bulk_transfer (port->pl->dh, port->settings.usb.inep,
(unsigned char*)bytes, size, &curread, port->timeout),
GP_ERROR_IO_READ );
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
write(port->pl->logfd, bytes, curread);
#endif
return curread;
}
/*
* This function applys changes to the device.
*
* New settings are in port->settings_pending and the old ones
* are in port->settings. Compare them first and only call
* usb_set_configuration() and usb_set_altinterface() if needed
* since some USB devices does not like it if this is done
* more than necessary (Canon Digital IXUS 300 for one).
*
*/
static int
gp_libusb1_update (GPPort *port)
{
int ifacereleased = FALSE, changedone = FALSE;
C_PARAMS (port && port->pl && port->pl->ctx);
GP_LOG_D ("(old int=%d, conf=%d, alt=%d) port %s, (new int=%d, conf=%d, alt=%d) port %s",
port->settings.usb.interface,
port->settings.usb.config,
port->settings.usb.altsetting,
port->settings.usb.port,
port->settings_pending.usb.interface,
port->settings_pending.usb.config,
port->settings_pending.usb.altsetting,
port->settings_pending.usb.port
);
/* do not overwrite it ... we need to set it.
if (port->pl->interface == -1) port->pl->interface = port->settings.usb.interface;
if (port->pl->config == -1) port->pl->config = port->settings.usb.config;
if (port->pl->altsetting == -1) port->pl->altsetting = port->settings.usb.altsetting;
*/
/* The portname can also be changed with the device still fully closed. */
memcpy(&port->settings.usb.port, &port->settings_pending.usb.port,
sizeof(port->settings.usb.port));
if (!port->pl->dh) {
GP_LOG_D("lowlevel libusb1 port not yet opened, no need for libusb changes");
return GP_OK; /* the port might not be opened, yet. that is ok */
}
memcpy(&port->settings.usb, &port->settings_pending.usb,
sizeof(port->settings.usb));
/* The interface changed. release the old, claim the new ... */
if (port->settings.usb.interface != port->pl->interface) {
GP_LOG_D ("changing interface %d -> %d", port->pl->interface, port->settings.usb.interface);
if (LOG_ON_LIBUSB_E (libusb_release_interface (port->pl->dh, port->pl->interface))) {
/* Not a hard error for now. -Marcus */
} else {
GP_LOG_D ("claiming interface %d", port->settings.usb.interface);
C_LIBUSB (libusb_claim_interface (port->pl->dh, port->settings.usb.interface),
GP_ERROR_IO_USB_CLAIM);
port->pl->interface = port->settings.usb.interface;
}
changedone = TRUE;
}
if (port->settings.usb.config != port->pl->config) {
GP_LOG_D ("changing config %d -> %d", port->pl->config, port->settings.usb.config);
/* This can only be changed with the interface released.
* This is a hard requirement since 2.6.12.
*/
if (LOG_ON_LIBUSB_E (libusb_release_interface (port->pl->dh, port->settings.usb.interface))) {
ifacereleased = FALSE;
} else {
ifacereleased = TRUE;
}
if (LOG_ON_LIBUSB_E (libusb_set_configuration(port->pl->dh, port->settings.usb.config))) {
#if 0 /* setting the configuration failure is not fatal */
int saved_errno = errno;
gp_port_set_error (port,
_("Could not set config %d/%d (%s)"),
port->settings.usb.interface,
port->settings.usb.config,
strerror(saved_errno));
return GP_ERROR_IO_UPDATE;
#endif
GP_LOG_E ("setting configuration from %d to %d failed, but continuing...", port->pl->config, port->settings.usb.config);
}
GP_LOG_D ("Changed usb.config from %d to %d", port->pl->config, port->settings.usb.config);
if (ifacereleased) {
GP_LOG_D ("claiming interface %d", port->settings.usb.interface);
LOG_ON_LIBUSB_E (libusb_claim_interface (port->pl->dh, port->settings.usb.interface));
}
/*
* Copy at once if something else fails so that this
* does not get re-applied
*/
port->pl->config = port->settings.usb.config;
changedone = TRUE;
}
/* This can be changed with interface claimed. (And I think it must be claimed.) */
if (port->settings.usb.altsetting != port->pl->altsetting) {
if (LOG_ON_LIBUSB_E (libusb_set_interface_alt_setting (port->pl->dh,
port->settings.usb.interface, port->settings.usb.altsetting))) {
int saved_errno = errno;
gp_port_set_error (port,
_("Could not set altsetting from %d "
"to %d (%s)"),
port->pl->altsetting,
port->settings.usb.altsetting,
strerror(saved_errno));
return GP_ERROR_IO_UPDATE;
}
GP_LOG_D ("Changed usb.altsetting from %d to %d", port->pl->altsetting, port->settings.usb.altsetting);
port->pl->altsetting = port->settings.usb.altsetting;
changedone = TRUE;
}
/* requeue the interrupts */
if (changedone)
gp_libusb1_queue_interrupt_urbs (port);
return GP_OK;
}
static int
gp_libusb1_open (GPPort *port)
{
int ret;
GP_LOG_D ("()");
C_PARAMS (port);
if (!port->pl->d) {
gp_libusb1_find_path_lib(port);
C_PARAMS (port->pl->d);
}
C_LIBUSB (libusb_open (port->pl->d, &port->pl->dh), GP_ERROR_IO);
if (!port->pl->dh) {
int saved_errno = errno;
gp_port_set_error (port, _("Could not open USB device (%s)."),
strerror(saved_errno));
return GP_ERROR_IO;
}
ret = libusb_kernel_driver_active (port->pl->dh, port->settings.usb.interface);
#if 0
if (strstr(name,"usbfs") || strstr(name,"storage")) {
/* other gphoto instance most likely */
gp_port_set_error (port, _("Camera is already in use."));
return GP_ERROR_IO_LOCK;
}
#endif
switch (ret) {
case 1: GP_LOG_D ("Device has a kernel driver attached (%d), detaching it now.", ret);
ret = libusb_detach_kernel_driver (port->pl->dh, port->settings.usb.interface);
if (ret < 0)
gp_port_set_error (port, _("Could not detach kernel driver of camera device."));
else
port->pl->detached = 1;
case 0: /* not detached */
break;
default:
gp_port_set_error (port, _("Could not query kernel driver of device."));
break;
}
GP_LOG_D ("claiming interface %d", port->settings.usb.interface);
if (LOG_ON_LIBUSB_E (libusb_claim_interface (port->pl->dh, port->settings.usb.interface))) {
int saved_errno = errno;
gp_port_set_error (port, _("Could not claim interface %d (%s). "
"Make sure no other program (%s) "
"or kernel module (such as %s) "
"is using the device and you have "
"read/write access to the device."),
port->settings.usb.interface,
strerror(saved_errno),
#ifdef __linux__
"gvfs-gphoto2-volume-monitor",
#else
#if defined(__APPLE__)
_("MacOS PTPCamera service"),
#else
_("unknown libgphoto2 using program"),
#endif
#endif
"sdc2xx, stv680, spca50x");
return GP_ERROR_IO_USB_CLAIM;
}
gp_libusb1_queue_interrupt_urbs (port);
return GP_OK;
}
int
gp_port_library_list (GPPortInfoList *list)
{
GPPortInfo info;
int nrofdevices = 0;
int d, i, i1, i2, unknownint;
libusb_context *ctx;
libusb_device **devs = NULL;
int nrofdevs = 0;
struct libusb_device_descriptor *descs;
C_LIBUSB (libusb_init (&ctx), GP_ERROR_IO);
/* TODO: make sure libusb_exit gets called in all error paths inside this function */
/* generic matcher. This will catch passed XXX,YYY entries for instance. */
C_GP (gp_port_info_new (&info));
gp_port_info_set_type (info, GP_PORT_USB);
gp_port_info_set_name (info, "");
gp_port_info_set_path (info, "^usb:");
C_GP (gp_port_info_list_append (list, info));
nrofdevs = libusb_get_device_list (ctx, &devs);
C_MEM (descs = calloc (nrofdevs, sizeof(descs[0])));
for (i=0;i<nrofdevs;i++)
LOG_ON_LIBUSB_E (libusb_get_device_descriptor(devs[i], &descs[i]));
for (d = 0; d < nrofdevs; d++) {
/* Devices which are definitely not cameras. */
if ( (descs[d].bDeviceClass == LIBUSB_CLASS_HUB) ||
(descs[d].bDeviceClass == LIBUSB_CLASS_HID) ||
(descs[d].bDeviceClass == LIBUSB_CLASS_PRINTER) ||
(descs[d].bDeviceClass == LIBUSB_CLASS_COMM) ||
(descs[d].bDeviceClass == 0xe0) /* wireless / bluetooth */
)
continue;
/* excepts HUBs, usually the interfaces have the classes, not
* the device */
unknownint = 0;
for (i = 0; i < descs[d].bNumConfigurations; i++) {
struct libusb_config_descriptor *config;
if (LOG_ON_LIBUSB_E (libusb_get_config_descriptor (devs[d], i, &config))) {
unknownint++;
continue;
}
for (i1 = 0; i1 < config->bNumInterfaces; i1++)
for (i2 = 0; i2 < config->interface[i1].num_altsetting; i2++) {
const struct libusb_interface_descriptor *intf = &config->interface[i1].altsetting[i2];
if ( (intf->bInterfaceClass == LIBUSB_CLASS_HID) ||
(intf->bInterfaceClass == LIBUSB_CLASS_PRINTER) ||
(intf->bInterfaceClass == LIBUSB_CLASS_COMM) ||
(intf->bInterfaceClass == 0xe0) /* wireless/bluetooth*/
)
continue;
unknownint++;
}
libusb_free_config_descriptor (config);
}
/* when we find only hids, printer or comm ifaces ... skip this */
if (!unknownint)
continue;
/* Note: We do not skip USB storage. Some devices can support both,
* and the Ricoh erronously reports it.
*/
nrofdevices++;
}
#if 0
/* If we already added usb:, and have 0 or 1 devices we have nothing to do.
* This should be the standard use case.
*/
/* We never want to return just "usb:" ... also return "usb:XXX,YYY", and
* let upper layers filter out the usb: */
if (nrofdevices <= 1)
return (GP_OK);
#endif
/* Redo the same bus/device walk, but now add the ports with usb:x,y notation,
* so we can address all USB devices.
*/
for (d = 0; d < nrofdevs; d++) {
char path[200];
/* Devices which are definitely not cameras. */
if ( (descs[d].bDeviceClass == LIBUSB_CLASS_HUB) ||
(descs[d].bDeviceClass == LIBUSB_CLASS_HID) ||
(descs[d].bDeviceClass == LIBUSB_CLASS_PRINTER) ||
(descs[d].bDeviceClass == LIBUSB_CLASS_COMM)
)
continue;
/* excepts HUBs, usually the interfaces have the classes, not
* the device */
unknownint = 0;
for (i = 0; i < descs[d].bNumConfigurations; i++) {
struct libusb_config_descriptor *config;
if (LOG_ON_LIBUSB_E (libusb_get_config_descriptor (devs[d], i, &config))) {
unknownint++;
continue;
}
for (i1 = 0; i1 < config->bNumInterfaces; i1++)
for (i2 = 0; i2 < config->interface[i1].num_altsetting; i2++) {
const struct libusb_interface_descriptor *intf = &config->interface[i1].altsetting[i2];
if ( (intf->bInterfaceClass == LIBUSB_CLASS_HID) ||
(intf->bInterfaceClass == LIBUSB_CLASS_PRINTER) ||
(intf->bInterfaceClass == LIBUSB_CLASS_COMM))
continue;
unknownint++;
}
libusb_free_config_descriptor (config);
}
/* when we find only hids, printer or comm ifaces ... skip this */
if (!unknownint)
continue;
/* Note: We do not skip USB storage. Some devices can support both,
* and the Ricoh erronously reports it.
*/
C_GP (gp_port_info_new (&info));
gp_port_info_set_type (info, GP_PORT_USB);
gp_port_info_set_name (info, "Universal Serial Bus");
snprintf (path,sizeof(path), "usb:%03d,%03d",
libusb_get_bus_number (devs[d]),
libusb_get_device_address (devs[d])
);
gp_port_info_set_path (info, path);
C_GP (gp_port_info_list_append (list, info));
}
/* This will only be added if no other device was ever added.
* Users doing "usb:" usage will enter the regular expression matcher case. */
if (nrofdevices == 0) {
C_GP (gp_port_info_new (&info));
gp_port_info_set_type (info, GP_PORT_USB);
gp_port_info_set_name (info, "Universal Serial Bus");
gp_port_info_set_path (info, "usb:");
C_GP (gp_port_info_list_append (list, info));
}
libusb_free_device_list (devs, 1);
libusb_exit (ctx); /* should free all stuff above */
free (descs);
return (GP_OK);
}