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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* gphoto2-port-usb.c
*
* Copyright 2001 Lutz Mller <lutz@users.sf.net>
* Copyright 1999-2000 Johannes Erdfelt <johannes@erdfelt.com>
* Copyright 2011 Marcus Meissner <marcus@jet.franken.de>
*
* 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 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 <gphoto2/gphoto2-port-library.h>
/* Workaround for GNU/kFreeBSD */
#if defined(__FreeBSD_kernel__)
#ifndef ENODATA
#define ENODATA ENOATTR
#endif
#endif
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/param.h>
#include <dirent.h>
#include <string.h>
#include <libusb.h>
#include <gphoto2/gphoto2-port.h>
#include <gphoto2/gphoto2-port-result.h>
#include <gphoto2/gphoto2-port-log.h>
#ifdef ENABLE_NLS
# include <libintl.h>
# undef _
# define _(String) dgettext (GETTEXT_PACKAGE, String)
# ifdef gettext_noop
# define N_(String) gettext_noop (String)
# else
# define N_(String) (String)
# endif
#else
# define textdomain(String) (String)
# define gettext(String) (String)
# define dgettext(Domain,Message) (Message)
# define dcgettext(Domain,Message,Type) (Message)
# define bindtextdomain(Domain,Directory) (Domain)
# define _(String) (String)
# define N_(String) (String)
#endif
#define CHECK(result) {int r=(result); if (r<0) return (r);}
struct _GPPortPrivateLibrary {
libusb_context *ctx;
libusb_device *d;
libusb_device_handle *dh;
int config;
int interface;
int altsetting;
int detached;
time_t devslastchecked;
int nrofdevs;
struct libusb_device_descriptor *descs;
libusb_device **devs;
};
GPPortType
gp_port_library_type (void)
{
return (GP_PORT_USB);
}
static ssize_t
load_devicelist (GPPortPrivateLibrary *pl) {
time_t xtime;
time(&xtime);
if (xtime != pl->devslastchecked) {
if (pl->nrofdevs)
libusb_free_device_list (pl->devs, 1);
free (pl->descs);
pl->nrofdevs = 0;
pl->devs = NULL;
pl->descs = NULL;
}
if (!pl->nrofdevs) {
int i;
pl->nrofdevs = libusb_get_device_list (pl->ctx, &pl->devs);
pl->descs = malloc (sizeof(pl->descs[0])*pl->nrofdevs);
for (i=0;i<pl->nrofdevs;i++) {
int ret;
ret = libusb_get_device_descriptor(pl->devs[i], &pl->descs[i]);
if (ret)
gp_log (GP_LOG_ERROR, "libusb1", "libusb_get_device_descriptor(%d) returned %d", i, ret);
}
}
time (&pl->devslastchecked);
return pl->nrofdevs;
}
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;
/* generic matcher. This will catch passed XXX,YYY entries for instance. */
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:");
CHECK (gp_port_info_list_append (list, info));
if (libusb_init (&ctx) != 0) {
gp_log (GP_LOG_ERROR, "libusb1", "libusb_init failed.");
return GP_ERROR_IO;
}
nrofdevs = libusb_get_device_list (ctx, &devs);
descs = malloc (sizeof(descs[0])*nrofdevs);
for (i=0;i<nrofdevs;i++) {
int ret;
ret = libusb_get_device_descriptor(devs[i], &descs[i]);
if (ret)
gp_log (GP_LOG_ERROR, "libusb1", "libusb_get_device_descriptor(%d) returned %d", i, ret);
}
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;
int ret;
ret = libusb_get_config_descriptor (devs[d], i, &config);
if (ret) {
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;
int ret;
ret = libusb_get_config_descriptor (devs[d], i, &config);
if (ret) {
gp_log (GP_LOG_ERROR, "libusb1", "libusb_get_config_descriptor(%d) returned %d", d, ret);
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.
*/
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);
CHECK (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) {
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:");
CHECK (gp_port_info_list_append (list, info));
}
libusb_exit (ctx); /* should free all stuff above */
free (descs);
return (GP_OK);
}
static int gp_port_usb_init (GPPort *port)
{
port->pl = malloc (sizeof (GPPortPrivateLibrary));
if (!port->pl)
return (GP_ERROR_NO_MEMORY);
memset (port->pl, 0, sizeof (GPPortPrivateLibrary));
port->pl->config = port->pl->interface = port->pl->altsetting = -1;
if (libusb_init (&port->pl->ctx) != 0) {
gp_log (GP_LOG_ERROR, "libusb1", "libusb_init failed.");
free (port->pl);
port->pl = NULL;
return GP_ERROR_IO;
}
#if 0
libusb_set_debug (port->pl->ctx, 255);
#endif
return GP_OK;
}
static int
gp_port_usb_exit (GPPort *port)
{
if (port->pl) {
free (port->pl->descs);
libusb_exit (port->pl->ctx);
free (port->pl);
port->pl = NULL;
}
return (GP_OK);
}
static int gp_port_usb_find_path_lib(GPPort *port);
static int
gp_port_usb_open (GPPort *port)
{
int ret;
gp_log (GP_LOG_DEBUG,"libusb1","gp_port_usb_open()");
if (!port)
return GP_ERROR_BAD_PARAMETERS;
if (!port->pl->d) {
gp_port_usb_find_path_lib(port);
if (!port->pl->d)
return GP_ERROR_BAD_PARAMETERS;
}
ret = libusb_open (port->pl->d, &port->pl->dh);
if (ret) {
gp_log (GP_LOG_ERROR, "libusb1", "libusb_open returned %d", ret);
return 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 (GP_LOG_DEBUG,"libusb1",_("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:
if (errno != ENODATA) /* ENODATA - just no driver there */
gp_port_set_error (port, _("Could not query kernel driver of device."));
}
gp_log (GP_LOG_DEBUG,"libusb1","claiming interface %d", port->settings.usb.interface);
ret = libusb_claim_interface (port->pl->dh,
port->settings.usb.interface);
if (ret < 0) {
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;
}
return GP_OK;
}
static int
gp_port_usb_close (GPPort *port)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
if (libusb_release_interface (port->pl->dh,
port->settings.usb.interface) < 0) {
int saved_errno = errno;
gp_port_set_error (port, _("Could not release "
"interface %d (%s)."),
port->settings.usb.interface,
strerror(saved_errno));
return (GP_ERROR_IO);
}
#if 0
/* This confuses the EOS 5d camera and possible other EOSs. *sigh* */
/* This is only for our very special Canon cameras which need a good
* whack after close, otherwise they get timeouts on reconnect.
*/
if (port->pl->d->descriptor.idVendor == 0x04a9) {
if (usb_reset (port->pl->dh) < 0) {
int saved_errno = errno;
gp_port_set_error (port, _("Could not reset "
"USB port (%s)."),
strerror(saved_errno));
return (GP_ERROR_IO);
}
}
#endif
if (port->pl->detached) {
int ret;
ret = libusb_attach_kernel_driver (port->pl->dh, port->settings.usb.interface);
if (ret < 0)
gp_port_set_error (port, _("Could not reattach kernel driver of camera device."));
}
libusb_close (port->pl->dh);
port->pl->dh = NULL;
return GP_OK;
}
static int
gp_port_usb_clear_halt_lib(GPPort *port, int ep)
{
int ret=0;
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
switch (ep) {
case GP_PORT_USB_ENDPOINT_IN :
ret=libusb_clear_halt(port->pl->dh, port->settings.usb.inep);
break;
case GP_PORT_USB_ENDPOINT_OUT :
ret=libusb_clear_halt(port->pl->dh, port->settings.usb.outep);
break;
case GP_PORT_USB_ENDPOINT_INT :
ret=libusb_clear_halt(port->pl->dh, port->settings.usb.intep);
break;
default:
gp_port_set_error (port, "gp_port_usb_clear_halt: "
"bad EndPoint argument");
return GP_ERROR_BAD_PARAMETERS;
}
return (ret ? GP_ERROR_IO_USB_CLEAR_HALT : GP_OK);
}
static int
gp_port_usb_write (GPPort *port, const char *bytes, int size)
{
int ret, curwritten;
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
ret = libusb_bulk_transfer (port->pl->dh, port->settings.usb.outep,
(unsigned char*)bytes, size, &curwritten, port->timeout);
if (ret < 0)
return (GP_ERROR_IO_WRITE);
return curwritten;
}
static int
gp_port_usb_read(GPPort *port, char *bytes, int size)
{
int ret, curread;
if (!port || !port->pl->dh) {
gp_log (GP_LOG_ERROR, "libusb1", "gp_port_usb_read: bad parameters");
return GP_ERROR_BAD_PARAMETERS;
}
gp_log (GP_LOG_DEBUG, "libusb1", "reading with timeout %d", port->timeout);
ret = libusb_bulk_transfer (port->pl->dh, port->settings.usb.inep,
(unsigned char*)bytes, size, &curread, port->timeout);
gp_log (GP_LOG_DEBUG, "libusb1", "ret = %d", ret);
if (ret < 0)
return GP_ERROR_IO_READ;
return curread;
}
static int
gp_port_usb_reset(GPPort *port)
{
int ret;
if (!port || !port->pl->dh) {
gp_log (GP_LOG_ERROR, "libusb1", "gp_port_usb_reset: bad parameters");
return GP_ERROR_BAD_PARAMETERS;
}
gp_log (GP_LOG_DEBUG, "libusb1", "reseting");
ret = libusb_reset_device (port->pl->dh);
gp_log (GP_LOG_DEBUG, "libusb1", "ret = %d", ret);
if (ret < 0)
return GP_ERROR_IO_READ;
return GP_OK;
}
static int
gp_port_usb_check_int (GPPort *port, char *bytes, int size, int timeout)
{
int ret, curread;
if (!port || !port->pl->dh || timeout < 0)
return GP_ERROR_BAD_PARAMETERS;
ret = libusb_interrupt_transfer (port->pl->dh, port->settings.usb.intep,
(unsigned char*)bytes, size, &curread, timeout);
if (ret < 0) {
if (ret == LIBUSB_TRANSFER_TIMED_OUT)
return GP_ERROR_TIMEOUT;
if (ret == LIBUSB_ERROR_TIMEOUT)
return GP_ERROR_TIMEOUT;
return GP_ERROR_IO_READ;
}
return curread;
}
static int
gp_port_usb_msg_write_lib(GPPort *port, int request, int value, int index,
char *bytes, int size)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
return libusb_control_transfer (port->pl->dh,
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
request, value, index, (unsigned char*)bytes, size, port->timeout);
}
static int
gp_port_usb_msg_read_lib(GPPort *port, int request, int value, int index,
char *bytes, int size)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
return libusb_control_transfer (port->pl->dh,
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_IN,
request, value, index, (unsigned char*)bytes, size, port->timeout);
}
/* The next two functions support the nonstandard request types 0x41 (write)
* and 0xc1 (read), which are occasionally needed.
*/
static int
gp_port_usb_msg_interface_write_lib(GPPort *port, int request,
int value, int index, char *bytes, int size)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
return libusb_control_transfer (port->pl->dh,
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_INTERFACE,
request, value, index, (unsigned char*)bytes, size, port->timeout);
}
static int
gp_port_usb_msg_interface_read_lib(GPPort *port, int request,
int value, int index, char *bytes, int size)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
return libusb_control_transfer (port->pl->dh,
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_IN,
request, value, index, (unsigned char*)bytes, size, port->timeout);
}
/* The next two functions support the nonstandard request types 0x21 (write)
* and 0xa1 (read), which are occasionally needed.
*/
static int
gp_port_usb_msg_class_write_lib(GPPort *port, int request,
int value, int index, char *bytes, int size)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
return libusb_control_transfer (port->pl->dh,
LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE,
request, value, index, (unsigned char*)bytes, size, port->timeout);
}
static int
gp_port_usb_msg_class_read_lib(GPPort *port, int request,
int value, int index, char *bytes, int size)
{
if (!port || !port->pl->dh)
return GP_ERROR_BAD_PARAMETERS;
return libusb_control_transfer (port->pl->dh,
LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_IN,
request, value, index, (unsigned char*)bytes, size, port->timeout);
}
/*
* 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_port_usb_update (GPPort *port)
{
int ret, ifacereleased = FALSE;
if (!port)
return GP_ERROR_BAD_PARAMETERS;
gp_log (GP_LOG_DEBUG, "libusb1", "gp_port_usb_update(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)
return GP_ERROR_BAD_PARAMETERS;
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 (GP_LOG_DEBUG, "libusb1", "changing interface %d -> %d",
port->pl->interface,
port->settings.usb.interface
);
if (libusb_release_interface (port->pl->dh,
port->pl->interface) < 0) {
gp_log (GP_LOG_DEBUG, "libusb1","releasing the iface for config failed.");
/* Not a hard error for now. -Marcus */
} else {
gp_log (GP_LOG_DEBUG,"libusb1","claiming interface %d", port->settings.usb.interface);
ret = libusb_claim_interface (port->pl->dh,
port->settings.usb.interface);
if (ret < 0) {
gp_log (GP_LOG_DEBUG, "libusb1","reclaiming the iface for config failed.");
return GP_ERROR_IO_UPDATE;
}
port->pl->interface = port->settings.usb.interface;
}
}
if (port->settings.usb.config != port->pl->config) {
gp_log (GP_LOG_DEBUG, "libusb1", "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 (libusb_release_interface (port->pl->dh,
port->settings.usb.interface) < 0) {
gp_log (GP_LOG_DEBUG, "libusb1","releasing the iface for config failed.");
ifacereleased = FALSE;
} else {
ifacereleased = TRUE;
}
ret = libusb_set_configuration(port->pl->dh,
port->settings.usb.config);
if (ret < 0) {
#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 (GP_LOG_ERROR, "libusb1","setting configuration from %d to %d failed with ret = %d, but continue...", port->pl->config, port->settings.usb.config, ret);
}
gp_log (GP_LOG_DEBUG, "libusb1",
"Changed usb.config from %d to %d",
port->pl->config,
port->settings.usb.config);
if (ifacereleased) {
gp_log (GP_LOG_DEBUG,"libusb1","claiming interface %d", port->settings.usb.interface);
ret = libusb_claim_interface (port->pl->dh,
port->settings.usb.interface);
if (ret < 0) {
gp_log (GP_LOG_DEBUG, "libusb1","reclaiming the iface for config failed.");
}
}
/*
* Copy at once if something else fails so that this
* does not get re-applied
*/
port->pl->config = port->settings.usb.config;
}
/* This can be changed with interface claimed. (And I think it must be claimed.) */
if (port->settings.usb.altsetting != port->pl->altsetting) {
ret = libusb_set_interface_alt_setting (
port->pl->dh,
port->settings.usb.interface,
port->settings.usb.altsetting
);
if (ret < 0) {
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 (GP_LOG_DEBUG, "libusb1",
"Changed usb.altsetting from %d to %d",
port->pl->altsetting,
port->settings.usb.altsetting);
port->pl->altsetting = port->settings.usb.altsetting;
}
return GP_OK;
}
static int
gp_port_usb_find_ep(libusb_device *dev, int config, int interface, int altsetting, int direction, int type)
{
const struct libusb_interface_descriptor *intf;
struct libusb_config_descriptor *confdesc;
int i, ret;
ret = libusb_get_config_descriptor (dev, config, &confdesc);
if (ret) return -1;
intf = &confdesc->interface[interface].altsetting[altsetting];
for (i = 0; i < intf->bNumEndpoints; i++) {
if (((intf->endpoint[i].bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK) == direction) &&
((intf->endpoint[i].bmAttributes & LIBUSB_TRANSFER_TYPE_MASK) == type)) {
unsigned char ret;
ret = intf->endpoint[i].bEndpointAddress; /* intf is cleared after next line, copy epaddr! */
libusb_free_config_descriptor (confdesc);
return ret;
}
}
libusb_free_config_descriptor (confdesc);
return -1;
}
static int
gp_port_usb_find_first_altsetting(struct libusb_device *dev, int *config, int *interface, int *altsetting)
{
int i, i1, i2, ret;
struct libusb_device_descriptor desc;
ret = libusb_get_device_descriptor (dev, &desc);
if (ret) {
gp_log (GP_LOG_ERROR, "libusb1", "libusb_get_device_descriptor ret %d", ret);
return -1;
}
for (i = 0; i < desc.bNumConfigurations; i++) {
struct libusb_config_descriptor *confdesc;
ret = libusb_get_config_descriptor (dev, i, &confdesc);
if (ret) return -1;
for (i1 = 0; i1 < confdesc->bNumInterfaces; i1++)
for (i2 = 0; i2 < confdesc->interface[i1].num_altsetting; i2++)
if (confdesc->interface[i1].altsetting[i2].bNumEndpoints) {
*config = i;
*interface = i1;
*altsetting = i2;
libusb_free_config_descriptor (confdesc);
return 0;
}
libusb_free_config_descriptor (confdesc);
}
return -1;
}
static int
gp_port_usb_find_path_lib(GPPort *port)
{
char *s;
int d, busnr = 0, devnr = 0;
GPPortPrivateLibrary *pl;
if (!port)
return (GP_ERROR_BAD_PARAMETERS);
pl = port->pl;
s = strchr (port->settings.usb.port,':');
if (s && (s[1] != '\0')) { /* usb:%d,%d */
if (sscanf (s+1, "%d,%d", &busnr, &devnr) != 2)
return GP_ERROR_BAD_PARAMETERS;
} else {
return GP_ERROR_BAD_PARAMETERS;
}
pl->nrofdevs = load_devicelist (port->pl);
for (d = 0; d < pl->nrofdevs; d++) {
struct libusb_config_descriptor *confdesc;
int ret;
int config = -1, interface = -1, altsetting = -1;
if (busnr != libusb_get_bus_number (pl->devs[d]))
continue;
if (devnr != libusb_get_device_address (pl->devs[d]))
continue;
port->pl->d = pl->devs[d];
gp_log (GP_LOG_VERBOSE, "libusb1", "Found path %s", port->settings.usb.port);
/* Use the first config, interface and altsetting we find */
gp_port_usb_find_first_altsetting(pl->devs[d], &config, &interface, &altsetting);
ret = libusb_get_config_descriptor (pl->devs[d], config, &confdesc);
if (ret)
continue;
/* Set the defaults */
port->settings.usb.config = confdesc->bConfigurationValue;
port->settings.usb.interface = confdesc->interface[interface].altsetting[altsetting].bInterfaceNumber;
port->settings.usb.altsetting = confdesc->interface[interface].altsetting[altsetting].bAlternateSetting;
port->settings.usb.inep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_IN, LIBUSB_TRANSFER_TYPE_BULK);
port->settings.usb.outep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_OUT, LIBUSB_TRANSFER_TYPE_BULK);
port->settings.usb.intep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_IN, LIBUSB_TRANSFER_TYPE_INTERRUPT);
port->settings.usb.maxpacketsize = libusb_get_max_packet_size (pl->devs[d], port->settings.usb.inep);
gp_log (GP_LOG_VERBOSE, "libusb1",
"Detected defaults: config %d, "
"interface %d, altsetting %d, "
"inep %02x, outep %02x, intep %02x, "
"class %02x, subclass %02x",
port->settings.usb.config,
port->settings.usb.interface,
port->settings.usb.altsetting,
port->settings.usb.inep,
port->settings.usb.outep,
port->settings.usb.intep,
confdesc->interface[interface].altsetting[altsetting].bInterfaceClass,
confdesc->interface[interface].altsetting[altsetting].bInterfaceSubClass
);
libusb_free_config_descriptor (confdesc);
return GP_OK;
}
#if 0
gp_port_set_error (port, _("Could not find USB device "
"(vendor 0x%x, product 0x%x). Make sure this device "
"is connected to the computer."), idvendor, idproduct);
#endif
return GP_ERROR_IO_USB_FIND;
}
static int
gp_port_usb_find_device_lib(GPPort *port, int idvendor, int idproduct)
{
char *s;
int d, busnr = 0, devnr = 0;
GPPortPrivateLibrary *pl;
if (!port)
return (GP_ERROR_BAD_PARAMETERS);
pl = port->pl;
s = strchr (port->settings.usb.port,':');
if (s && (s[1] != '\0')) { /* usb:%d,%d */
if (sscanf (s+1, "%d,%d", &busnr, &devnr) != 2) {
devnr = 0;
sscanf (s+1, "%d", &busnr);
}
}
/*
* 0x0000 idvendor is not valid.
* 0x0000 idproduct is ok.
* Should the USB layer report that ? I don't know.
* Better to check here.
*/
if (!idvendor) {
gp_port_set_error (port, _("The supplied vendor or product "
"id (0x%x,0x%x) is not valid."), idvendor, idproduct);
return GP_ERROR_BAD_PARAMETERS;
}
pl->nrofdevs = load_devicelist (port->pl);
for (d = 0; d < pl->nrofdevs; d++) {
struct libusb_config_descriptor *confdesc;
int ret;
int config = -1, interface = -1, altsetting = -1;
if ((pl->descs[d].idVendor != idvendor) ||
(pl->descs[d].idProduct != idproduct))
continue;
if (busnr && (busnr != libusb_get_bus_number (pl->devs[d])))
continue;
if (devnr && (devnr != libusb_get_device_address (pl->devs[d])))
continue;
port->pl->d = pl->devs[d];
gp_log (GP_LOG_VERBOSE, "libusb1",
"Looking for USB device "
"(vendor 0x%x, product 0x%x)... found.",
idvendor, idproduct);
/* Use the first config, interface and altsetting we find */
gp_port_usb_find_first_altsetting(pl->devs[d], &config, &interface, &altsetting);
ret = libusb_get_config_descriptor (pl->devs[d], config, &confdesc);
if (ret)
continue;
/* Set the defaults */
if (confdesc->interface[interface].altsetting[altsetting].bInterfaceClass
== LIBUSB_CLASS_MASS_STORAGE) {
gp_log (GP_LOG_VERBOSE, "libusb1",
_("USB device (vendor 0x%x, product 0x%x) is a mass"
" storage device, and might not function with gphoto2."
" Reference: %s"),
idvendor, idproduct, URL_USB_MASSSTORAGE);
}
port->settings.usb.config = confdesc->bConfigurationValue;
port->settings.usb.interface = confdesc->interface[interface].altsetting[altsetting].bInterfaceNumber;
port->settings.usb.altsetting = confdesc->interface[interface].altsetting[altsetting].bAlternateSetting;
port->settings.usb.inep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_IN, LIBUSB_TRANSFER_TYPE_BULK);
port->settings.usb.outep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_OUT, LIBUSB_TRANSFER_TYPE_BULK);
port->settings.usb.intep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_IN, LIBUSB_TRANSFER_TYPE_INTERRUPT);
port->settings.usb.maxpacketsize = libusb_get_max_packet_size (pl->devs[d], port->settings.usb.inep);
gp_log (GP_LOG_VERBOSE, "libusb1",
"Detected defaults: config %d, "
"interface %d, altsetting %d, "
"inep %02x, outep %02x, intep %02x, "
"class %02x, subclass %02x",
port->settings.usb.config,
port->settings.usb.interface,
port->settings.usb.altsetting,
port->settings.usb.inep,
port->settings.usb.outep,
port->settings.usb.intep,
confdesc->interface[interface].altsetting[altsetting].bInterfaceClass,
confdesc->interface[interface].altsetting[altsetting].bInterfaceSubClass
);
libusb_free_config_descriptor (confdesc);
return GP_OK;
}
#if 0
gp_port_set_error (port, _("Could not find USB device "
"(vendor 0x%x, product 0x%x). Make sure this device "
"is connected to the computer."), idvendor, idproduct);
#endif
return GP_ERROR_IO_USB_FIND;
}
/* This function reads the Microsoft OS Descriptor and looks inside to
* find if it is a MTP device. This is the similar to the way that
* Windows Media Player 10 uses.
* It is documented to some degree on various internet pages.
*/
static int
gp_port_usb_match_mtp_device(struct libusb_device *dev,int *configno, int *interfaceno, int *altsettingno)
{
/* Marcus: Avoid this probing altogether, its too unstable on some devices */
return 0;
#if 0
char buf[1000], cmd;
int ret,i,i1,i2, xifaces,xnocamifaces;
usb_dev_handle *devh;
/* All of them are "vendor specific" device class */
#if 0
if ((desc.bDeviceClass!=0xff) && (desc.bDeviceClass!=0))
return 0;
#endif
if (dev->config) {
xifaces = xnocamifaces = 0;
for (i = 0; i < desc.bNumConfigurations; i++) {
unsigned int j;
for (j = 0; j < dev->config[i].bNumInterfaces; j++) {
int k;
xifaces++;
for (k = 0; k < dev->config[i].interface[j].num_altsetting; k++) {
struct usb_interface_descriptor *intf = &dev->config[i].interface[j].altsetting[k];
if ( (intf->bInterfaceClass == LIBUSB_CLASS_HID) ||
(intf->bInterfaceClass == LIBUSB_CLASS_PRINTER) ||
(intf->bInterfaceClass == LIBUSB_CLASS_AUDIO) ||
(intf->bInterfaceClass == LIBUSB_CLASS_HUB) ||
(intf->bInterfaceClass == LIBUSB_CLASS_COMM) ||
(intf->bInterfaceClass == 0xe0) /* wireless/bluetooth*/
)
xnocamifaces++;
}
}
}
}
if (xifaces == xnocamifaces) /* only non-camera ifaces */
return 0;
devh = usb_open (dev);
if (!devh)
return 0;
/*
* Loop over the device configurations and interfaces. Nokia MTP-capable
* handsets (possibly others) typically have the string "MTP" in their
* MTP interface descriptions, that's how they can be detected, before
* we try the more esoteric "OS descriptors" (below).
*/
if (dev->config) {
for (i = 0; i < desc.bNumConfigurations; i++) {
unsigned int j;
for (j = 0; j < dev->config[i].bNumInterfaces; j++) {
int k;
for (k = 0; k < dev->config[i].interface[j].num_altsetting; k++) {
buf[0] = '\0';
ret = usb_get_string_simple(devh,
dev->config[i].interface[j].altsetting[k].iInterface,
(char *) buf,
1024);
if (ret < 3)
continue;
if (strcmp((char *) buf, "MTP") == 0) {
gp_log (GP_LOG_DEBUG, "mtp matcher", "Configuration %d, interface %d, altsetting %d:\n", i, j, k);
gp_log (GP_LOG_DEBUG, "mtp matcher", " Interface description contains the string \"MTP\"\n");
gp_log (GP_LOG_DEBUG, "mtp matcher", " Device recognized as MTP, no further probing.\n");
goto found;
}
}
}
}
}
/* get string descriptor at 0xEE */
ret = usb_get_descriptor (devh, 0x03, 0xee, buf, sizeof(buf));
if (ret > 0) gp_log_data("get_MS_OSD",buf, ret);
if (ret < 10) goto errout;
if (!((buf[2] == 'M') && (buf[4]=='S') && (buf[6]=='F') && (buf[8]=='T')))
goto errout;
cmd = buf[16];
ret = usb_control_msg (devh, USB_ENDPOINT_IN|USB_RECIP_DEVICE|LIBUSB_REQUEST_TYPE_VENDOR, cmd, 0, 4, buf, sizeof(buf), 1000);
if (ret == -1) {
gp_log (GP_LOG_ERROR, "mtp matcher", "control message says %d\n", ret);
goto errout;
}
if (buf[0] != 0x28) {
gp_log (GP_LOG_ERROR, "mtp matcher", "ret is %d, buf[0] is %x\n", ret, buf[0]);
goto errout;
}
if (ret > 0) gp_log_data("get_MS_ExtDesc",buf, ret);
if ((buf[0x12] != 'M') || (buf[0x13] != 'T') || (buf[0x14] != 'P')) {
gp_log (GP_LOG_ERROR, "mtp matcher", "buf at 0x12 is %02x%02x%02x\n", buf[0x12], buf[0x13], buf[0x14]);
goto errout;
}
ret = usb_control_msg (devh, USB_ENDPOINT_IN|USB_RECIP_DEVICE|LIBUSB_REQUEST_TYPE_VENDOR, cmd, 0, 5, buf, sizeof(buf), 1000);
if (ret == -1) goto errout;
if (buf[0] != 0x28) {
gp_log (GP_LOG_ERROR, "mtp matcher", "ret is %d, buf[0] is %x\n", ret, buf[0]);
goto errout;
}
if (ret > 0) gp_log_data("get_MS_ExtProp",buf, ret);
if ((buf[0x12] != 'M') || (buf[0x13] != 'T') || (buf[0x14] != 'P')) {
gp_log (GP_LOG_ERROR, "mtp matcher", "buf at 0x12 is %02x%02x%02x\n", buf[0x12], buf[0x13], buf[0x14]);
goto errout;
}
found:
usb_close (devh);
/* Now chose a nice interface for us to use ... Just take the first. */
if (desc.bNumConfigurations > 1)
gp_log (GP_LOG_ERROR, "mtp matcher", "The device has %d configurations!\n", desc.bNumConfigurations);
for (i = 0; i < desc.bNumConfigurations; i++) {
struct usb_config_descriptor *config =
&dev->config[i];
if (config->bNumInterfaces > 1)
gp_log (GP_LOG_ERROR, "mtp matcher", "The configuration has %d interfaces!\n", config->bNumInterfaces);
for (i1 = 0; i1 < config->bNumInterfaces; i1++) {
struct usb_interface *interface =
&config->interface[i1];
if (interface->num_altsetting > 1)
gp_log (GP_LOG_ERROR, "mtp matcher", "The interface has %d altsettings!\n", interface->num_altsetting);
for (i2 = 0; i2 < interface->num_altsetting; i2++) {
*configno = i;
*interfaceno = i1;
*altsettingno = i2;
return 1;
}
}
}
return 1;
errout:
usb_close (devh);
return 0;
#endif
}
static int
gp_port_usb_match_device_by_class(struct libusb_device *dev, int class, int subclass, int protocol, int *configno, int *interfaceno, int *altsettingno)
{
int i, i1, i2;
struct libusb_device_descriptor desc;
int ret;
if (class == 666) /* Special hack for MTP devices with MS OS descriptors. */
return gp_port_usb_match_mtp_device (dev, configno, interfaceno, altsettingno);
ret = libusb_get_device_descriptor(dev, &desc);
if (desc.bDeviceClass == class &&
(subclass == -1 ||
desc.bDeviceSubClass == subclass) &&
(protocol == -1 ||
desc.bDeviceProtocol == protocol))
return 1;
for (i = 0; i < desc.bNumConfigurations; i++) {
struct libusb_config_descriptor *config;
ret = libusb_get_config_descriptor (dev, i, &config);
if (ret != LIBUSB_SUCCESS) continue;
for (i1 = 0; i1 < config->bNumInterfaces; i1++) {
const struct libusb_interface *interface =
&config->interface[i1];
for (i2 = 0; i2 < interface->num_altsetting; i2++) {
const struct libusb_interface_descriptor *altsetting =
&interface->altsetting[i2];
if (altsetting->bInterfaceClass == class &&
(subclass == -1 ||
altsetting->bInterfaceSubClass == subclass) &&
(protocol == -1 ||
altsetting->bInterfaceProtocol == protocol)) {
*configno = i;
*interfaceno = i1;
*altsettingno = i2;
libusb_free_config_descriptor (config);
return 2;
}
}
}
libusb_free_config_descriptor (config);
}
return 0;
}
static int
gp_port_usb_find_device_by_class_lib(GPPort *port, int class, int subclass, int protocol)
{
char *s;
int d, busnr = 0, devnr = 0;
GPPortPrivateLibrary *pl;
if (!port)
return (GP_ERROR_BAD_PARAMETERS);
pl = port->pl;
s = strchr (port->settings.usb.port,':');
if (s && (s[1] != '\0')) { /* usb:%d,%d */
if (sscanf (s+1, "%d,%d", &busnr, &devnr) != 2) {
devnr = 0;
sscanf (s+1, "%d", &busnr);
}
}
/*
* 0x00 class is not valid.
* 0x00 subclass and protocol is ok.
* Should the USB layer report that ? I don't know.
* Better to check here.
*/
if (!class)
return GP_ERROR_BAD_PARAMETERS;
pl->nrofdevs = load_devicelist (port->pl);
for (d = 0; d < pl->nrofdevs; d++) {
struct libusb_config_descriptor *confdesc;
int i, ret, config = -1, interface = -1, altsetting = -1;
if (busnr && (busnr != libusb_get_bus_number (pl->devs[d])))
continue;
if (devnr && (devnr != libusb_get_device_address (pl->devs[d])))
continue;
gp_log (GP_LOG_VERBOSE, "gphoto2-port-usb",
"Looking for USB device "
"(class 0x%x, subclass, 0x%x, protocol 0x%x)...",
class, subclass, protocol);
ret = gp_port_usb_match_device_by_class(pl->devs[d], class, subclass, protocol, &config, &interface, &altsetting);
if (!ret)
continue;
port->pl->d = pl->devs[d];
gp_log (GP_LOG_VERBOSE, "libusb1",
"Found USB class device "
"(class 0x%x, subclass, 0x%x, protocol 0x%x)",
class, subclass, protocol);
ret = libusb_get_config_descriptor (pl->devs[d], config, &confdesc);
if (ret) continue;
/* Set the defaults */
port->settings.usb.config = confdesc->bConfigurationValue;
port->settings.usb.interface = confdesc->interface[interface].altsetting[altsetting].bInterfaceNumber;
port->settings.usb.altsetting = confdesc->interface[interface].altsetting[altsetting].bAlternateSetting;
port->settings.usb.inep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_IN, LIBUSB_TRANSFER_TYPE_BULK);
port->settings.usb.outep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_OUT, LIBUSB_TRANSFER_TYPE_BULK);
port->settings.usb.intep = gp_port_usb_find_ep(pl->devs[d], config, interface, altsetting, LIBUSB_ENDPOINT_IN, LIBUSB_TRANSFER_TYPE_INTERRUPT);
port->settings.usb.maxpacketsize = 0;
gp_log (GP_LOG_DEBUG, "libusb1", "inep to look for is %02x", port->settings.usb.inep);
for (i=0;i<confdesc->interface[interface].altsetting[altsetting].bNumEndpoints;i++) {
if (port->settings.usb.inep == confdesc->interface[interface].altsetting[altsetting].endpoint[i].bEndpointAddress) {
port->settings.usb.maxpacketsize = confdesc->interface[interface].altsetting[altsetting].endpoint[i].wMaxPacketSize;
break;
}
}
gp_log (GP_LOG_VERBOSE, "libusb1",
"Detected defaults: config %d, "
"interface %d, altsetting %d, "
"idVendor ID %04x, idProduct %04x, "
"inep %02x, outep %02x, intep %02x",
port->settings.usb.config,
port->settings.usb.interface,
port->settings.usb.altsetting,
pl->descs[d].idVendor,
pl->descs[d].idProduct,
port->settings.usb.inep,
port->settings.usb.outep,
port->settings.usb.intep
);
libusb_free_config_descriptor (confdesc);
return GP_OK;
}
#if 0
gp_port_set_error (port, _("Could not find USB device "
"(class 0x%x, subclass 0x%x, protocol 0x%x). Make sure this device "
"is connected to the computer."), class, subclass, protocol);
#endif
return GP_ERROR_IO_USB_FIND;
}
GPPortOperations *
gp_port_library_operations (void)
{
GPPortOperations *ops;
ops = malloc (sizeof (GPPortOperations));
if (!ops)
return (NULL);
memset (ops, 0, sizeof (GPPortOperations));
ops->init = gp_port_usb_init;
ops->exit = gp_port_usb_exit;
ops->open = gp_port_usb_open;
ops->close = gp_port_usb_close;
ops->read = gp_port_usb_read;
ops->reset = gp_port_usb_reset;
ops->write = gp_port_usb_write;
ops->check_int = gp_port_usb_check_int;
ops->update = gp_port_usb_update;
ops->clear_halt = gp_port_usb_clear_halt_lib;
ops->msg_write = gp_port_usb_msg_write_lib;
ops->msg_read = gp_port_usb_msg_read_lib;
ops->msg_interface_write = gp_port_usb_msg_interface_write_lib;
ops->msg_interface_read = gp_port_usb_msg_interface_read_lib;
ops->msg_class_write = gp_port_usb_msg_class_write_lib;
ops->msg_class_read = gp_port_usb_msg_class_read_lib;
ops->find_device = gp_port_usb_find_device_lib;
ops->find_device_by_class = gp_port_usb_find_device_by_class_lib;
return (ops);
}
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