X-Git-Url: http://47.100.26.94:8080/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjni%2Flibusb-1.0.22%2Flibusb%2Fdescriptor.c;fp=app%2Fsrc%2Fmain%2Fjni%2Flibusb-1.0.22%2Flibusb%2Fdescriptor.c;h=0000000000000000000000000000000000000000;hb=dd394951609bc6647111ca8246429543c378ba7b;hp=74d6de557eabdb2f6bbd97702cf27fff7834da8c;hpb=d0d496554f96cebf84db3e9b3cf507577272ef8c;p=rtmpclient.git diff --git a/app/src/main/jni/libusb-1.0.22/libusb/descriptor.c b/app/src/main/jni/libusb-1.0.22/libusb/descriptor.c deleted file mode 100644 index 74d6de5..0000000 --- a/app/src/main/jni/libusb-1.0.22/libusb/descriptor.c +++ /dev/null @@ -1,1192 +0,0 @@ -/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */ -/* - * USB descriptor handling functions for libusb - * Copyright © 2007 Daniel Drake - * Copyright © 2001 Johannes Erdfelt - * - * 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 - -#include -#include -#include -#include - -#include "libusbi.h" - -#define DESC_HEADER_LENGTH 2 -#define DEVICE_DESC_LENGTH 18 -#define CONFIG_DESC_LENGTH 9 -#define INTERFACE_DESC_LENGTH 9 -#define ENDPOINT_DESC_LENGTH 7 -#define ENDPOINT_AUDIO_DESC_LENGTH 9 - -/** @defgroup libusb_desc USB descriptors - * This page details how to examine the various standard USB descriptors - * for detected devices - */ - -/* set host_endian if the w values are already in host endian format, - * as opposed to bus endian. */ -int usbi_parse_descriptor(const unsigned char *source, const char *descriptor, - void *dest, int host_endian) -{ - const unsigned char *sp = source; - unsigned char *dp = dest; - uint16_t w; - const char *cp; - uint32_t d; - - for (cp = descriptor; *cp; cp++) { - switch (*cp) { - case 'b': /* 8-bit byte */ - *dp++ = *sp++; - break; - case 'w': /* 16-bit word, convert from little endian to CPU */ - dp += ((uintptr_t)dp & 1); /* Align to word boundary */ - - if (host_endian) { - memcpy(dp, sp, 2); - } else { - w = (sp[1] << 8) | sp[0]; - *((uint16_t *)dp) = w; - } - sp += 2; - dp += 2; - break; - case 'd': /* 32-bit word, convert from little endian to CPU */ - dp += ((uintptr_t)dp & 1); /* Align to word boundary */ - - if (host_endian) { - memcpy(dp, sp, 4); - } else { - d = (sp[3] << 24) | (sp[2] << 16) | - (sp[1] << 8) | sp[0]; - *((uint32_t *)dp) = d; - } - sp += 4; - dp += 4; - break; - case 'u': /* 16 byte UUID */ - memcpy(dp, sp, 16); - sp += 16; - dp += 16; - break; - } - } - - return (int) (sp - source); -} - -static void clear_endpoint(struct libusb_endpoint_descriptor *endpoint) -{ - free((void *) endpoint->extra); -} - -static int parse_endpoint(struct libusb_context *ctx, - struct libusb_endpoint_descriptor *endpoint, unsigned char *buffer, - int size, int host_endian) -{ - struct usb_descriptor_header header; - unsigned char *extra; - unsigned char *begin; - int parsed = 0; - int len; - - if (size < DESC_HEADER_LENGTH) { - usbi_err(ctx, "short endpoint descriptor read %d/%d", - size, DESC_HEADER_LENGTH); - return LIBUSB_ERROR_IO; - } - - usbi_parse_descriptor(buffer, "bb", &header, 0); - if (header.bDescriptorType != LIBUSB_DT_ENDPOINT) { - usbi_err(ctx, "unexpected descriptor %x (expected %x)", - header.bDescriptorType, LIBUSB_DT_ENDPOINT); - return parsed; - } - if (header.bLength > size) { - usbi_warn(ctx, "short endpoint descriptor read %d/%d", - size, header.bLength); - return parsed; - } - if (header.bLength >= ENDPOINT_AUDIO_DESC_LENGTH) - usbi_parse_descriptor(buffer, "bbbbwbbb", endpoint, host_endian); - else if (header.bLength >= ENDPOINT_DESC_LENGTH) - usbi_parse_descriptor(buffer, "bbbbwb", endpoint, host_endian); - else { - usbi_err(ctx, "invalid endpoint bLength (%d)", header.bLength); - return LIBUSB_ERROR_IO; - } - - buffer += header.bLength; - size -= header.bLength; - parsed += header.bLength; - - /* Skip over the rest of the Class Specific or Vendor Specific */ - /* descriptors */ - begin = buffer; - while (size >= DESC_HEADER_LENGTH) { - usbi_parse_descriptor(buffer, "bb", &header, 0); - if (header.bLength < DESC_HEADER_LENGTH) { - usbi_err(ctx, "invalid extra ep desc len (%d)", - header.bLength); - return LIBUSB_ERROR_IO; - } else if (header.bLength > size) { - usbi_warn(ctx, "short extra ep desc read %d/%d", - size, header.bLength); - return parsed; - } - - /* If we find another "proper" descriptor then we're done */ - if ((header.bDescriptorType == LIBUSB_DT_ENDPOINT) || - (header.bDescriptorType == LIBUSB_DT_INTERFACE) || - (header.bDescriptorType == LIBUSB_DT_CONFIG) || - (header.bDescriptorType == LIBUSB_DT_DEVICE)) - break; - - usbi_dbg("skipping descriptor %x", header.bDescriptorType); - buffer += header.bLength; - size -= header.bLength; - parsed += header.bLength; - } - - /* Copy any unknown descriptors into a storage area for drivers */ - /* to later parse */ - len = (int)(buffer - begin); - if (!len) { - endpoint->extra = NULL; - endpoint->extra_length = 0; - return parsed; - } - - extra = malloc(len); - endpoint->extra = extra; - if (!extra) { - endpoint->extra_length = 0; - return LIBUSB_ERROR_NO_MEM; - } - - memcpy(extra, begin, len); - endpoint->extra_length = len; - - return parsed; -} - -static void clear_interface(struct libusb_interface *usb_interface) -{ - int i; - int j; - - if (usb_interface->altsetting) { - for (i = 0; i < usb_interface->num_altsetting; i++) { - struct libusb_interface_descriptor *ifp = - (struct libusb_interface_descriptor *) - usb_interface->altsetting + i; - free((void *) ifp->extra); - if (ifp->endpoint) { - for (j = 0; j < ifp->bNumEndpoints; j++) - clear_endpoint((struct libusb_endpoint_descriptor *) - ifp->endpoint + j); - } - free((void *) ifp->endpoint); - } - } - free((void *) usb_interface->altsetting); - usb_interface->altsetting = NULL; -} - -static int parse_interface(libusb_context *ctx, - struct libusb_interface *usb_interface, unsigned char *buffer, int size, - int host_endian) -{ - int i; - int len; - int r; - int parsed = 0; - int interface_number = -1; - struct usb_descriptor_header header; - struct libusb_interface_descriptor *ifp; - unsigned char *begin; - - usb_interface->num_altsetting = 0; - - while (size >= INTERFACE_DESC_LENGTH) { - struct libusb_interface_descriptor *altsetting = - (struct libusb_interface_descriptor *) usb_interface->altsetting; - altsetting = usbi_reallocf(altsetting, - sizeof(struct libusb_interface_descriptor) * - (usb_interface->num_altsetting + 1)); - if (!altsetting) { - r = LIBUSB_ERROR_NO_MEM; - goto err; - } - usb_interface->altsetting = altsetting; - - ifp = altsetting + usb_interface->num_altsetting; - usbi_parse_descriptor(buffer, "bbbbbbbbb", ifp, 0); - if (ifp->bDescriptorType != LIBUSB_DT_INTERFACE) { - usbi_err(ctx, "unexpected descriptor %x (expected %x)", - ifp->bDescriptorType, LIBUSB_DT_INTERFACE); - return parsed; - } - if (ifp->bLength < INTERFACE_DESC_LENGTH) { - usbi_err(ctx, "invalid interface bLength (%d)", - ifp->bLength); - r = LIBUSB_ERROR_IO; - goto err; - } - if (ifp->bLength > size) { - usbi_warn(ctx, "short intf descriptor read %d/%d", - size, ifp->bLength); - return parsed; - } - if (ifp->bNumEndpoints > USB_MAXENDPOINTS) { - usbi_err(ctx, "too many endpoints (%d)", ifp->bNumEndpoints); - r = LIBUSB_ERROR_IO; - goto err; - } - - usb_interface->num_altsetting++; - ifp->extra = NULL; - ifp->extra_length = 0; - ifp->endpoint = NULL; - - if (interface_number == -1) - interface_number = ifp->bInterfaceNumber; - - /* Skip over the interface */ - buffer += ifp->bLength; - parsed += ifp->bLength; - size -= ifp->bLength; - - begin = buffer; - - /* Skip over any interface, class or vendor descriptors */ - while (size >= DESC_HEADER_LENGTH) { - usbi_parse_descriptor(buffer, "bb", &header, 0); - if (header.bLength < DESC_HEADER_LENGTH) { - usbi_err(ctx, - "invalid extra intf desc len (%d)", - header.bLength); - r = LIBUSB_ERROR_IO; - goto err; - } else if (header.bLength > size) { - usbi_warn(ctx, - "short extra intf desc read %d/%d", - size, header.bLength); - return parsed; - } - - /* If we find another "proper" descriptor then we're done */ - if ((header.bDescriptorType == LIBUSB_DT_INTERFACE) || - (header.bDescriptorType == LIBUSB_DT_ENDPOINT) || - (header.bDescriptorType == LIBUSB_DT_CONFIG) || - (header.bDescriptorType == LIBUSB_DT_DEVICE)) - break; - - buffer += header.bLength; - parsed += header.bLength; - size -= header.bLength; - } - - /* Copy any unknown descriptors into a storage area for */ - /* drivers to later parse */ - len = (int)(buffer - begin); - if (len) { - ifp->extra = malloc(len); - if (!ifp->extra) { - r = LIBUSB_ERROR_NO_MEM; - goto err; - } - memcpy((unsigned char *) ifp->extra, begin, len); - ifp->extra_length = len; - } - - if (ifp->bNumEndpoints > 0) { - struct libusb_endpoint_descriptor *endpoint; - endpoint = calloc(ifp->bNumEndpoints, sizeof(struct libusb_endpoint_descriptor)); - ifp->endpoint = endpoint; - if (!endpoint) { - r = LIBUSB_ERROR_NO_MEM; - goto err; - } - - for (i = 0; i < ifp->bNumEndpoints; i++) { - r = parse_endpoint(ctx, endpoint + i, buffer, size, - host_endian); - if (r < 0) - goto err; - if (r == 0) { - ifp->bNumEndpoints = (uint8_t)i; - break; - } - - buffer += r; - parsed += r; - size -= r; - } - } - - /* We check to see if it's an alternate to this one */ - ifp = (struct libusb_interface_descriptor *) buffer; - if (size < LIBUSB_DT_INTERFACE_SIZE || - ifp->bDescriptorType != LIBUSB_DT_INTERFACE || - ifp->bInterfaceNumber != interface_number) - return parsed; - } - - return parsed; -err: - clear_interface(usb_interface); - return r; -} - -static void clear_configuration(struct libusb_config_descriptor *config) -{ - int i; - if (config->interface) { - for (i = 0; i < config->bNumInterfaces; i++) - clear_interface((struct libusb_interface *) - config->interface + i); - } - free((void *) config->interface); - free((void *) config->extra); -} - -static int parse_configuration(struct libusb_context *ctx, - struct libusb_config_descriptor *config, unsigned char *buffer, - int size, int host_endian) -{ - int i; - int r; - struct usb_descriptor_header header; - struct libusb_interface *usb_interface; - - if (size < LIBUSB_DT_CONFIG_SIZE) { - usbi_err(ctx, "short config descriptor read %d/%d", - size, LIBUSB_DT_CONFIG_SIZE); - return LIBUSB_ERROR_IO; - } - - usbi_parse_descriptor(buffer, "bbwbbbbb", config, host_endian); - if (config->bDescriptorType != LIBUSB_DT_CONFIG) { - usbi_err(ctx, "unexpected descriptor %x (expected %x)", - config->bDescriptorType, LIBUSB_DT_CONFIG); - return LIBUSB_ERROR_IO; - } - if (config->bLength < LIBUSB_DT_CONFIG_SIZE) { - usbi_err(ctx, "invalid config bLength (%d)", config->bLength); - return LIBUSB_ERROR_IO; - } - if (config->bLength > size) { - usbi_err(ctx, "short config descriptor read %d/%d", - size, config->bLength); - return LIBUSB_ERROR_IO; - } - if (config->bNumInterfaces > USB_MAXINTERFACES) { - usbi_err(ctx, "too many interfaces (%d)", config->bNumInterfaces); - return LIBUSB_ERROR_IO; - } - - usb_interface = calloc(config->bNumInterfaces, sizeof(struct libusb_interface)); - config->interface = usb_interface; - if (!usb_interface) - return LIBUSB_ERROR_NO_MEM; - - buffer += config->bLength; - size -= config->bLength; - - config->extra = NULL; - config->extra_length = 0; - - for (i = 0; i < config->bNumInterfaces; i++) { - int len; - unsigned char *begin; - - /* Skip over the rest of the Class Specific or Vendor */ - /* Specific descriptors */ - begin = buffer; - while (size >= DESC_HEADER_LENGTH) { - usbi_parse_descriptor(buffer, "bb", &header, 0); - - if (header.bLength < DESC_HEADER_LENGTH) { - usbi_err(ctx, - "invalid extra config desc len (%d)", - header.bLength); - r = LIBUSB_ERROR_IO; - goto err; - } else if (header.bLength > size) { - usbi_warn(ctx, - "short extra config desc read %d/%d", - size, header.bLength); - config->bNumInterfaces = (uint8_t)i; - return size; - } - - /* If we find another "proper" descriptor then we're done */ - if ((header.bDescriptorType == LIBUSB_DT_ENDPOINT) || - (header.bDescriptorType == LIBUSB_DT_INTERFACE) || - (header.bDescriptorType == LIBUSB_DT_CONFIG) || - (header.bDescriptorType == LIBUSB_DT_DEVICE)) - break; - - usbi_dbg("skipping descriptor 0x%x", header.bDescriptorType); - buffer += header.bLength; - size -= header.bLength; - } - - /* Copy any unknown descriptors into a storage area for */ - /* drivers to later parse */ - len = (int)(buffer - begin); - if (len) { - /* FIXME: We should realloc and append here */ - if (!config->extra_length) { - config->extra = malloc(len); - if (!config->extra) { - r = LIBUSB_ERROR_NO_MEM; - goto err; - } - - memcpy((unsigned char *) config->extra, begin, len); - config->extra_length = len; - } - } - - r = parse_interface(ctx, usb_interface + i, buffer, size, host_endian); - if (r < 0) - goto err; - if (r == 0) { - config->bNumInterfaces = (uint8_t)i; - break; - } - - buffer += r; - size -= r; - } - - return size; - -err: - clear_configuration(config); - return r; -} - -static int raw_desc_to_config(struct libusb_context *ctx, - unsigned char *buf, int size, int host_endian, - struct libusb_config_descriptor **config) -{ - struct libusb_config_descriptor *_config = malloc(sizeof(*_config)); - int r; - - if (!_config) - return LIBUSB_ERROR_NO_MEM; - - r = parse_configuration(ctx, _config, buf, size, host_endian); - if (r < 0) { - usbi_err(ctx, "parse_configuration failed with error %d", r); - free(_config); - return r; - } else if (r > 0) { - usbi_warn(ctx, "still %d bytes of descriptor data left", r); - } - - *config = _config; - return LIBUSB_SUCCESS; -} - -int usbi_device_cache_descriptor(libusb_device *dev) -{ - int r, host_endian = 0; - - r = usbi_backend.get_device_descriptor(dev, (unsigned char *) &dev->device_descriptor, - &host_endian); - if (r < 0) - return r; - - if (!host_endian) { - dev->device_descriptor.bcdUSB = libusb_le16_to_cpu(dev->device_descriptor.bcdUSB); - dev->device_descriptor.idVendor = libusb_le16_to_cpu(dev->device_descriptor.idVendor); - dev->device_descriptor.idProduct = libusb_le16_to_cpu(dev->device_descriptor.idProduct); - dev->device_descriptor.bcdDevice = libusb_le16_to_cpu(dev->device_descriptor.bcdDevice); - } - - return LIBUSB_SUCCESS; -} - -/** \ingroup libusb_desc - * Get the USB device descriptor for a given device. - * - * This is a non-blocking function; the device descriptor is cached in memory. - * - * Note since libusb-1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102, this - * function always succeeds. - * - * \param dev the device - * \param desc output location for the descriptor data - * \returns 0 on success or a LIBUSB_ERROR code on failure - */ -int API_EXPORTED libusb_get_device_descriptor(libusb_device *dev, - struct libusb_device_descriptor *desc) -{ - usbi_dbg(""); - memcpy((unsigned char *) desc, (unsigned char *) &dev->device_descriptor, - sizeof (dev->device_descriptor)); - return 0; -} - -/** \ingroup libusb_desc - * Get the USB configuration descriptor for the currently active configuration. - * This is a non-blocking function which does not involve any requests being - * sent to the device. - * - * \param dev a device - * \param config output location for the USB configuration descriptor. Only - * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() - * after use. - * \returns 0 on success - * \returns LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state - * \returns another LIBUSB_ERROR code on error - * \see libusb_get_config_descriptor - */ -int API_EXPORTED libusb_get_active_config_descriptor(libusb_device *dev, - struct libusb_config_descriptor **config) -{ - struct libusb_config_descriptor _config; - unsigned char tmp[LIBUSB_DT_CONFIG_SIZE]; - unsigned char *buf = NULL; - int host_endian = 0; - int r; - - r = usbi_backend.get_active_config_descriptor(dev, tmp, - LIBUSB_DT_CONFIG_SIZE, &host_endian); - if (r < 0) - return r; - if (r < LIBUSB_DT_CONFIG_SIZE) { - usbi_err(dev->ctx, "short config descriptor read %d/%d", - r, LIBUSB_DT_CONFIG_SIZE); - return LIBUSB_ERROR_IO; - } - - usbi_parse_descriptor(tmp, "bbw", &_config, host_endian); - buf = malloc(_config.wTotalLength); - if (!buf) - return LIBUSB_ERROR_NO_MEM; - - r = usbi_backend.get_active_config_descriptor(dev, buf, - _config.wTotalLength, &host_endian); - if (r >= 0) - r = raw_desc_to_config(dev->ctx, buf, r, host_endian, config); - - free(buf); - return r; -} - -/** \ingroup libusb_desc - * Get a USB configuration descriptor based on its index. - * This is a non-blocking function which does not involve any requests being - * sent to the device. - * - * \param dev a device - * \param config_index the index of the configuration you wish to retrieve - * \param config output location for the USB configuration descriptor. Only - * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() - * after use. - * \returns 0 on success - * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist - * \returns another LIBUSB_ERROR code on error - * \see libusb_get_active_config_descriptor() - * \see libusb_get_config_descriptor_by_value() - */ -int API_EXPORTED libusb_get_config_descriptor(libusb_device *dev, - uint8_t config_index, struct libusb_config_descriptor **config) -{ - struct libusb_config_descriptor _config; - unsigned char tmp[LIBUSB_DT_CONFIG_SIZE]; - unsigned char *buf = NULL; - int host_endian = 0; - int r; - - usbi_dbg("index %d", config_index); - if (config_index >= dev->num_configurations) - return LIBUSB_ERROR_NOT_FOUND; - - r = usbi_backend.get_config_descriptor(dev, config_index, tmp, - LIBUSB_DT_CONFIG_SIZE, &host_endian); - if (r < 0) - return r; - if (r < LIBUSB_DT_CONFIG_SIZE) { - usbi_err(dev->ctx, "short config descriptor read %d/%d", - r, LIBUSB_DT_CONFIG_SIZE); - return LIBUSB_ERROR_IO; - } - - usbi_parse_descriptor(tmp, "bbw", &_config, host_endian); - buf = malloc(_config.wTotalLength); - if (!buf) - return LIBUSB_ERROR_NO_MEM; - - r = usbi_backend.get_config_descriptor(dev, config_index, buf, - _config.wTotalLength, &host_endian); - if (r >= 0) - r = raw_desc_to_config(dev->ctx, buf, r, host_endian, config); - - free(buf); - return r; -} - -/* iterate through all configurations, returning the index of the configuration - * matching a specific bConfigurationValue in the idx output parameter, or -1 - * if the config was not found. - * returns 0 on success or a LIBUSB_ERROR code - */ -int usbi_get_config_index_by_value(struct libusb_device *dev, - uint8_t bConfigurationValue, int *idx) -{ - uint8_t i; - - usbi_dbg("value %d", bConfigurationValue); - for (i = 0; i < dev->num_configurations; i++) { - unsigned char tmp[6]; - int host_endian; - int r = usbi_backend.get_config_descriptor(dev, i, tmp, sizeof(tmp), - &host_endian); - if (r < 0) { - *idx = -1; - return r; - } - if (tmp[5] == bConfigurationValue) { - *idx = i; - return 0; - } - } - - *idx = -1; - return 0; -} - -/** \ingroup libusb_desc - * Get a USB configuration descriptor with a specific bConfigurationValue. - * This is a non-blocking function which does not involve any requests being - * sent to the device. - * - * \param dev a device - * \param bConfigurationValue the bConfigurationValue of the configuration you - * wish to retrieve - * \param config output location for the USB configuration descriptor. Only - * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() - * after use. - * \returns 0 on success - * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist - * \returns another LIBUSB_ERROR code on error - * \see libusb_get_active_config_descriptor() - * \see libusb_get_config_descriptor() - */ -int API_EXPORTED libusb_get_config_descriptor_by_value(libusb_device *dev, - uint8_t bConfigurationValue, struct libusb_config_descriptor **config) -{ - int r, idx, host_endian; - unsigned char *buf = NULL; - - if (usbi_backend.get_config_descriptor_by_value) { - r = usbi_backend.get_config_descriptor_by_value(dev, - bConfigurationValue, &buf, &host_endian); - if (r < 0) - return r; - return raw_desc_to_config(dev->ctx, buf, r, host_endian, config); - } - - r = usbi_get_config_index_by_value(dev, bConfigurationValue, &idx); - if (r < 0) - return r; - else if (idx == -1) - return LIBUSB_ERROR_NOT_FOUND; - else - return libusb_get_config_descriptor(dev, (uint8_t) idx, config); -} - -/** \ingroup libusb_desc - * Free a configuration descriptor obtained from - * libusb_get_active_config_descriptor() or libusb_get_config_descriptor(). - * It is safe to call this function with a NULL config parameter, in which - * case the function simply returns. - * - * \param config the configuration descriptor to free - */ -void API_EXPORTED libusb_free_config_descriptor( - struct libusb_config_descriptor *config) -{ - if (!config) - return; - - clear_configuration(config); - free(config); -} - -/** \ingroup libusb_desc - * Get an endpoints superspeed endpoint companion descriptor (if any) - * - * \param ctx the context to operate on, or NULL for the default context - * \param endpoint endpoint descriptor from which to get the superspeed - * endpoint companion descriptor - * \param ep_comp output location for the superspeed endpoint companion - * descriptor. Only valid if 0 was returned. Must be freed with - * libusb_free_ss_endpoint_companion_descriptor() after use. - * \returns 0 on success - * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist - * \returns another LIBUSB_ERROR code on error - */ -int API_EXPORTED libusb_get_ss_endpoint_companion_descriptor( - struct libusb_context *ctx, - const struct libusb_endpoint_descriptor *endpoint, - struct libusb_ss_endpoint_companion_descriptor **ep_comp) -{ - struct usb_descriptor_header header; - int size = endpoint->extra_length; - const unsigned char *buffer = endpoint->extra; - - *ep_comp = NULL; - - while (size >= DESC_HEADER_LENGTH) { - usbi_parse_descriptor(buffer, "bb", &header, 0); - if (header.bLength < 2 || header.bLength > size) { - usbi_err(ctx, "invalid descriptor length %d", - header.bLength); - return LIBUSB_ERROR_IO; - } - if (header.bDescriptorType != LIBUSB_DT_SS_ENDPOINT_COMPANION) { - buffer += header.bLength; - size -= header.bLength; - continue; - } - if (header.bLength < LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE) { - usbi_err(ctx, "invalid ss-ep-comp-desc length %d", - header.bLength); - return LIBUSB_ERROR_IO; - } - *ep_comp = malloc(sizeof(**ep_comp)); - if (*ep_comp == NULL) - return LIBUSB_ERROR_NO_MEM; - usbi_parse_descriptor(buffer, "bbbbw", *ep_comp, 0); - return LIBUSB_SUCCESS; - } - return LIBUSB_ERROR_NOT_FOUND; -} - -/** \ingroup libusb_desc - * Free a superspeed endpoint companion descriptor obtained from - * libusb_get_ss_endpoint_companion_descriptor(). - * It is safe to call this function with a NULL ep_comp parameter, in which - * case the function simply returns. - * - * \param ep_comp the superspeed endpoint companion descriptor to free - */ -void API_EXPORTED libusb_free_ss_endpoint_companion_descriptor( - struct libusb_ss_endpoint_companion_descriptor *ep_comp) -{ - free(ep_comp); -} - -static int parse_bos(struct libusb_context *ctx, - struct libusb_bos_descriptor **bos, - unsigned char *buffer, int size, int host_endian) -{ - struct libusb_bos_descriptor bos_header, *_bos; - struct libusb_bos_dev_capability_descriptor dev_cap; - int i; - - if (size < LIBUSB_DT_BOS_SIZE) { - usbi_err(ctx, "short bos descriptor read %d/%d", - size, LIBUSB_DT_BOS_SIZE); - return LIBUSB_ERROR_IO; - } - - usbi_parse_descriptor(buffer, "bbwb", &bos_header, host_endian); - if (bos_header.bDescriptorType != LIBUSB_DT_BOS) { - usbi_err(ctx, "unexpected descriptor %x (expected %x)", - bos_header.bDescriptorType, LIBUSB_DT_BOS); - return LIBUSB_ERROR_IO; - } - if (bos_header.bLength < LIBUSB_DT_BOS_SIZE) { - usbi_err(ctx, "invalid bos bLength (%d)", bos_header.bLength); - return LIBUSB_ERROR_IO; - } - if (bos_header.bLength > size) { - usbi_err(ctx, "short bos descriptor read %d/%d", - size, bos_header.bLength); - return LIBUSB_ERROR_IO; - } - - _bos = calloc (1, - sizeof(*_bos) + bos_header.bNumDeviceCaps * sizeof(void *)); - if (!_bos) - return LIBUSB_ERROR_NO_MEM; - - usbi_parse_descriptor(buffer, "bbwb", _bos, host_endian); - buffer += bos_header.bLength; - size -= bos_header.bLength; - - /* Get the device capability descriptors */ - for (i = 0; i < bos_header.bNumDeviceCaps; i++) { - if (size < LIBUSB_DT_DEVICE_CAPABILITY_SIZE) { - usbi_warn(ctx, "short dev-cap descriptor read %d/%d", - size, LIBUSB_DT_DEVICE_CAPABILITY_SIZE); - break; - } - usbi_parse_descriptor(buffer, "bbb", &dev_cap, host_endian); - if (dev_cap.bDescriptorType != LIBUSB_DT_DEVICE_CAPABILITY) { - usbi_warn(ctx, "unexpected descriptor %x (expected %x)", - dev_cap.bDescriptorType, LIBUSB_DT_DEVICE_CAPABILITY); - break; - } - if (dev_cap.bLength < LIBUSB_DT_DEVICE_CAPABILITY_SIZE) { - usbi_err(ctx, "invalid dev-cap bLength (%d)", - dev_cap.bLength); - libusb_free_bos_descriptor(_bos); - return LIBUSB_ERROR_IO; - } - if (dev_cap.bLength > size) { - usbi_warn(ctx, "short dev-cap descriptor read %d/%d", - size, dev_cap.bLength); - break; - } - - _bos->dev_capability[i] = malloc(dev_cap.bLength); - if (!_bos->dev_capability[i]) { - libusb_free_bos_descriptor(_bos); - return LIBUSB_ERROR_NO_MEM; - } - memcpy(_bos->dev_capability[i], buffer, dev_cap.bLength); - buffer += dev_cap.bLength; - size -= dev_cap.bLength; - } - _bos->bNumDeviceCaps = (uint8_t)i; - *bos = _bos; - - return LIBUSB_SUCCESS; -} - -/** \ingroup libusb_desc - * Get a Binary Object Store (BOS) descriptor - * This is a BLOCKING function, which will send requests to the device. - * - * \param dev_handle the handle of an open libusb device - * \param bos output location for the BOS descriptor. Only valid if 0 was returned. - * Must be freed with \ref libusb_free_bos_descriptor() after use. - * \returns 0 on success - * \returns LIBUSB_ERROR_NOT_FOUND if the device doesn't have a BOS descriptor - * \returns another LIBUSB_ERROR code on error - */ -int API_EXPORTED libusb_get_bos_descriptor(libusb_device_handle *dev_handle, - struct libusb_bos_descriptor **bos) -{ - struct libusb_bos_descriptor _bos; - uint8_t bos_header[LIBUSB_DT_BOS_SIZE] = {0}; - unsigned char *bos_data = NULL; - const int host_endian = 0; - int r; - - /* Read the BOS. This generates 2 requests on the bus, - * one for the header, and one for the full BOS */ - r = libusb_get_descriptor(dev_handle, LIBUSB_DT_BOS, 0, bos_header, - LIBUSB_DT_BOS_SIZE); - if (r < 0) { - if (r != LIBUSB_ERROR_PIPE) - usbi_err(HANDLE_CTX(dev_handle), "failed to read BOS (%d)", r); - return r; - } - if (r < LIBUSB_DT_BOS_SIZE) { - usbi_err(HANDLE_CTX(dev_handle), "short BOS read %d/%d", - r, LIBUSB_DT_BOS_SIZE); - return LIBUSB_ERROR_IO; - } - - usbi_parse_descriptor(bos_header, "bbwb", &_bos, host_endian); - usbi_dbg("found BOS descriptor: size %d bytes, %d capabilities", - _bos.wTotalLength, _bos.bNumDeviceCaps); - bos_data = calloc(_bos.wTotalLength, 1); - if (bos_data == NULL) - return LIBUSB_ERROR_NO_MEM; - - r = libusb_get_descriptor(dev_handle, LIBUSB_DT_BOS, 0, bos_data, - _bos.wTotalLength); - if (r >= 0) - r = parse_bos(HANDLE_CTX(dev_handle), bos, bos_data, r, host_endian); - else - usbi_err(HANDLE_CTX(dev_handle), "failed to read BOS (%d)", r); - - free(bos_data); - return r; -} - -/** \ingroup libusb_desc - * Free a BOS descriptor obtained from libusb_get_bos_descriptor(). - * It is safe to call this function with a NULL bos parameter, in which - * case the function simply returns. - * - * \param bos the BOS descriptor to free - */ -void API_EXPORTED libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos) -{ - int i; - - if (!bos) - return; - - for (i = 0; i < bos->bNumDeviceCaps; i++) - free(bos->dev_capability[i]); - free(bos); -} - -/** \ingroup libusb_desc - * Get an USB 2.0 Extension descriptor - * - * \param ctx the context to operate on, or NULL for the default context - * \param dev_cap Device Capability descriptor with a bDevCapabilityType of - * \ref libusb_capability_type::LIBUSB_BT_USB_2_0_EXTENSION - * LIBUSB_BT_USB_2_0_EXTENSION - * \param usb_2_0_extension output location for the USB 2.0 Extension - * descriptor. Only valid if 0 was returned. Must be freed with - * libusb_free_usb_2_0_extension_descriptor() after use. - * \returns 0 on success - * \returns a LIBUSB_ERROR code on error - */ -int API_EXPORTED libusb_get_usb_2_0_extension_descriptor( - struct libusb_context *ctx, - struct libusb_bos_dev_capability_descriptor *dev_cap, - struct libusb_usb_2_0_extension_descriptor **usb_2_0_extension) -{ - struct libusb_usb_2_0_extension_descriptor *_usb_2_0_extension; - const int host_endian = 0; - - if (dev_cap->bDevCapabilityType != LIBUSB_BT_USB_2_0_EXTENSION) { - usbi_err(ctx, "unexpected bDevCapabilityType %x (expected %x)", - dev_cap->bDevCapabilityType, - LIBUSB_BT_USB_2_0_EXTENSION); - return LIBUSB_ERROR_INVALID_PARAM; - } - if (dev_cap->bLength < LIBUSB_BT_USB_2_0_EXTENSION_SIZE) { - usbi_err(ctx, "short dev-cap descriptor read %d/%d", - dev_cap->bLength, LIBUSB_BT_USB_2_0_EXTENSION_SIZE); - return LIBUSB_ERROR_IO; - } - - _usb_2_0_extension = malloc(sizeof(*_usb_2_0_extension)); - if (!_usb_2_0_extension) - return LIBUSB_ERROR_NO_MEM; - - usbi_parse_descriptor((unsigned char *)dev_cap, "bbbd", - _usb_2_0_extension, host_endian); - - *usb_2_0_extension = _usb_2_0_extension; - return LIBUSB_SUCCESS; -} - -/** \ingroup libusb_desc - * Free a USB 2.0 Extension descriptor obtained from - * libusb_get_usb_2_0_extension_descriptor(). - * It is safe to call this function with a NULL usb_2_0_extension parameter, - * in which case the function simply returns. - * - * \param usb_2_0_extension the USB 2.0 Extension descriptor to free - */ -void API_EXPORTED libusb_free_usb_2_0_extension_descriptor( - struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension) -{ - free(usb_2_0_extension); -} - -/** \ingroup libusb_desc - * Get a SuperSpeed USB Device Capability descriptor - * - * \param ctx the context to operate on, or NULL for the default context - * \param dev_cap Device Capability descriptor with a bDevCapabilityType of - * \ref libusb_capability_type::LIBUSB_BT_SS_USB_DEVICE_CAPABILITY - * LIBUSB_BT_SS_USB_DEVICE_CAPABILITY - * \param ss_usb_device_cap output location for the SuperSpeed USB Device - * Capability descriptor. Only valid if 0 was returned. Must be freed with - * libusb_free_ss_usb_device_capability_descriptor() after use. - * \returns 0 on success - * \returns a LIBUSB_ERROR code on error - */ -int API_EXPORTED libusb_get_ss_usb_device_capability_descriptor( - struct libusb_context *ctx, - struct libusb_bos_dev_capability_descriptor *dev_cap, - struct libusb_ss_usb_device_capability_descriptor **ss_usb_device_cap) -{ - struct libusb_ss_usb_device_capability_descriptor *_ss_usb_device_cap; - const int host_endian = 0; - - if (dev_cap->bDevCapabilityType != LIBUSB_BT_SS_USB_DEVICE_CAPABILITY) { - usbi_err(ctx, "unexpected bDevCapabilityType %x (expected %x)", - dev_cap->bDevCapabilityType, - LIBUSB_BT_SS_USB_DEVICE_CAPABILITY); - return LIBUSB_ERROR_INVALID_PARAM; - } - if (dev_cap->bLength < LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE) { - usbi_err(ctx, "short dev-cap descriptor read %d/%d", - dev_cap->bLength, LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE); - return LIBUSB_ERROR_IO; - } - - _ss_usb_device_cap = malloc(sizeof(*_ss_usb_device_cap)); - if (!_ss_usb_device_cap) - return LIBUSB_ERROR_NO_MEM; - - usbi_parse_descriptor((unsigned char *)dev_cap, "bbbbwbbw", - _ss_usb_device_cap, host_endian); - - *ss_usb_device_cap = _ss_usb_device_cap; - return LIBUSB_SUCCESS; -} - -/** \ingroup libusb_desc - * Free a SuperSpeed USB Device Capability descriptor obtained from - * libusb_get_ss_usb_device_capability_descriptor(). - * It is safe to call this function with a NULL ss_usb_device_cap - * parameter, in which case the function simply returns. - * - * \param ss_usb_device_cap the USB 2.0 Extension descriptor to free - */ -void API_EXPORTED libusb_free_ss_usb_device_capability_descriptor( - struct libusb_ss_usb_device_capability_descriptor *ss_usb_device_cap) -{ - free(ss_usb_device_cap); -} - -/** \ingroup libusb_desc - * Get a Container ID descriptor - * - * \param ctx the context to operate on, or NULL for the default context - * \param dev_cap Device Capability descriptor with a bDevCapabilityType of - * \ref libusb_capability_type::LIBUSB_BT_CONTAINER_ID - * LIBUSB_BT_CONTAINER_ID - * \param container_id output location for the Container ID descriptor. - * Only valid if 0 was returned. Must be freed with - * libusb_free_container_id_descriptor() after use. - * \returns 0 on success - * \returns a LIBUSB_ERROR code on error - */ -int API_EXPORTED libusb_get_container_id_descriptor(struct libusb_context *ctx, - struct libusb_bos_dev_capability_descriptor *dev_cap, - struct libusb_container_id_descriptor **container_id) -{ - struct libusb_container_id_descriptor *_container_id; - const int host_endian = 0; - - if (dev_cap->bDevCapabilityType != LIBUSB_BT_CONTAINER_ID) { - usbi_err(ctx, "unexpected bDevCapabilityType %x (expected %x)", - dev_cap->bDevCapabilityType, - LIBUSB_BT_CONTAINER_ID); - return LIBUSB_ERROR_INVALID_PARAM; - } - if (dev_cap->bLength < LIBUSB_BT_CONTAINER_ID_SIZE) { - usbi_err(ctx, "short dev-cap descriptor read %d/%d", - dev_cap->bLength, LIBUSB_BT_CONTAINER_ID_SIZE); - return LIBUSB_ERROR_IO; - } - - _container_id = malloc(sizeof(*_container_id)); - if (!_container_id) - return LIBUSB_ERROR_NO_MEM; - - usbi_parse_descriptor((unsigned char *)dev_cap, "bbbbu", - _container_id, host_endian); - - *container_id = _container_id; - return LIBUSB_SUCCESS; -} - -/** \ingroup libusb_desc - * Free a Container ID descriptor obtained from - * libusb_get_container_id_descriptor(). - * It is safe to call this function with a NULL container_id parameter, - * in which case the function simply returns. - * - * \param container_id the USB 2.0 Extension descriptor to free - */ -void API_EXPORTED libusb_free_container_id_descriptor( - struct libusb_container_id_descriptor *container_id) -{ - free(container_id); -} - -/** \ingroup libusb_desc - * Retrieve a string descriptor in C style ASCII. - * - * Wrapper around libusb_get_string_descriptor(). Uses the first language - * supported by the device. - * - * \param dev_handle a device handle - * \param desc_index the index of the descriptor to retrieve - * \param data output buffer for ASCII string descriptor - * \param length size of data buffer - * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure - */ -int API_EXPORTED libusb_get_string_descriptor_ascii(libusb_device_handle *dev_handle, - uint8_t desc_index, unsigned char *data, int length) -{ - unsigned char tbuf[255]; /* Some devices choke on size > 255 */ - int r, si, di; - uint16_t langid; - - /* Asking for the zero'th index is special - it returns a string - * descriptor that contains all the language IDs supported by the - * device. Typically there aren't many - often only one. Language - * IDs are 16 bit numbers, and they start at the third byte in the - * descriptor. There's also no point in trying to read descriptor 0 - * with this function. See USB 2.0 specification section 9.6.7 for - * more information. - */ - - if (desc_index == 0) - return LIBUSB_ERROR_INVALID_PARAM; - - r = libusb_get_string_descriptor(dev_handle, 0, 0, tbuf, sizeof(tbuf)); - if (r < 0) - return r; - - if (r < 4) - return LIBUSB_ERROR_IO; - - langid = tbuf[2] | (tbuf[3] << 8); - - r = libusb_get_string_descriptor(dev_handle, desc_index, langid, tbuf, - sizeof(tbuf)); - if (r < 0) - return r; - - if (tbuf[1] != LIBUSB_DT_STRING) - return LIBUSB_ERROR_IO; - - if (tbuf[0] > r) - return LIBUSB_ERROR_IO; - - di = 0; - for (si = 2; si < tbuf[0]; si += 2) { - if (di >= (length - 1)) - break; - - if ((tbuf[si] & 0x80) || (tbuf[si + 1])) /* non-ASCII */ - data[di++] = '?'; - else - data[di++] = tbuf[si]; - } - - data[di] = 0; - return di; -}