1 /* $FreeBSD$ */ 2 /*- 3 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/queue.h> 28 29 #include <stdio.h> 30 #include <stdlib.h> 31 32 #include "libusb20.h" 33 #include "libusb20_desc.h" 34 #include "libusb20_int.h" 35 #include "libusb.h" 36 #include "libusb10.h" 37 38 #define N_ALIGN(n) (-((-(n)) & (-8UL))) 39 40 /* USB descriptors */ 41 42 int 43 libusb_get_device_descriptor(libusb_device *dev, 44 struct libusb_device_descriptor *desc) 45 { 46 struct LIBUSB20_DEVICE_DESC_DECODED *pdesc; 47 struct libusb20_device *pdev; 48 49 if ((dev == NULL) || (desc == NULL)) 50 return (LIBUSB_ERROR_INVALID_PARAM); 51 52 pdev = dev->os_priv; 53 pdesc = libusb20_dev_get_device_desc(pdev); 54 55 desc->bLength = pdesc->bLength; 56 desc->bDescriptorType = pdesc->bDescriptorType; 57 desc->bcdUSB = pdesc->bcdUSB; 58 desc->bDeviceClass = pdesc->bDeviceClass; 59 desc->bDeviceSubClass = pdesc->bDeviceSubClass; 60 desc->bDeviceProtocol = pdesc->bDeviceProtocol; 61 desc->bMaxPacketSize0 = pdesc->bMaxPacketSize0; 62 desc->idVendor = pdesc->idVendor; 63 desc->idProduct = pdesc->idProduct; 64 desc->bcdDevice = pdesc->bcdDevice; 65 desc->iManufacturer = pdesc->iManufacturer; 66 desc->iProduct = pdesc->iProduct; 67 desc->iSerialNumber = pdesc->iSerialNumber; 68 desc->bNumConfigurations = pdesc->bNumConfigurations; 69 70 return (0); 71 } 72 73 int 74 libusb_get_active_config_descriptor(libusb_device *dev, 75 struct libusb_config_descriptor **config) 76 { 77 struct libusb20_device *pdev; 78 uint8_t config_index; 79 80 pdev = dev->os_priv; 81 config_index = libusb20_dev_get_config_index(pdev); 82 83 return (libusb_get_config_descriptor(dev, config_index, config)); 84 } 85 86 int 87 libusb_get_config_descriptor(libusb_device *dev, uint8_t config_index, 88 struct libusb_config_descriptor **config) 89 { 90 struct libusb20_device *pdev; 91 struct libusb20_config *pconf; 92 struct libusb20_interface *pinf; 93 struct libusb20_endpoint *pend; 94 struct libusb_config_descriptor *pconfd; 95 struct libusb_interface_descriptor *ifd; 96 struct libusb_endpoint_descriptor *endd; 97 uint8_t *pextra; 98 uint16_t nextra; 99 uint8_t nif; 100 uint8_t nep; 101 uint8_t nalt; 102 uint8_t i; 103 uint8_t j; 104 uint8_t k; 105 106 if (dev == NULL || config == NULL) 107 return (LIBUSB_ERROR_INVALID_PARAM); 108 109 *config = NULL; 110 111 pdev = dev->os_priv; 112 pconf = libusb20_dev_alloc_config(pdev, config_index); 113 114 if (pconf == NULL) 115 return (LIBUSB_ERROR_NOT_FOUND); 116 117 nalt = nif = pconf->num_interface; 118 nep = 0; 119 nextra = N_ALIGN(pconf->extra.len); 120 121 for (i = 0; i < nif; i++) { 122 123 pinf = pconf->interface + i; 124 nextra += N_ALIGN(pinf->extra.len); 125 nep += pinf->num_endpoints; 126 k = pinf->num_endpoints; 127 pend = pinf->endpoints; 128 while (k--) { 129 nextra += N_ALIGN(pend->extra.len); 130 pend++; 131 } 132 133 j = pinf->num_altsetting; 134 nalt += pinf->num_altsetting; 135 pinf = pinf->altsetting; 136 while (j--) { 137 nextra += N_ALIGN(pinf->extra.len); 138 nep += pinf->num_endpoints; 139 k = pinf->num_endpoints; 140 pend = pinf->endpoints; 141 while (k--) { 142 nextra += N_ALIGN(pend->extra.len); 143 pend++; 144 } 145 pinf++; 146 } 147 } 148 149 nextra = nextra + 150 (1 * sizeof(libusb_config_descriptor)) + 151 (nif * sizeof(libusb_interface)) + 152 (nalt * sizeof(libusb_interface_descriptor)) + 153 (nep * sizeof(libusb_endpoint_descriptor)); 154 155 nextra = N_ALIGN(nextra); 156 157 pconfd = malloc(nextra); 158 159 if (pconfd == NULL) { 160 free(pconf); 161 return (LIBUSB_ERROR_NO_MEM); 162 } 163 /* make sure memory is initialised */ 164 memset(pconfd, 0, nextra); 165 166 pconfd->interface = (libusb_interface *) (pconfd + 1); 167 168 ifd = (libusb_interface_descriptor *) (pconfd->interface + nif); 169 endd = (libusb_endpoint_descriptor *) (ifd + nalt); 170 pextra = (uint8_t *)(endd + nep); 171 172 /* fill in config descriptor */ 173 174 pconfd->bLength = pconf->desc.bLength; 175 pconfd->bDescriptorType = pconf->desc.bDescriptorType; 176 pconfd->wTotalLength = pconf->desc.wTotalLength; 177 pconfd->bNumInterfaces = pconf->desc.bNumInterfaces; 178 pconfd->bConfigurationValue = pconf->desc.bConfigurationValue; 179 pconfd->iConfiguration = pconf->desc.iConfiguration; 180 pconfd->bmAttributes = pconf->desc.bmAttributes; 181 pconfd->MaxPower = pconf->desc.bMaxPower; 182 183 if (pconf->extra.len != 0) { 184 pconfd->extra_length = pconf->extra.len; 185 pconfd->extra = pextra; 186 memcpy(pextra, pconf->extra.ptr, pconfd->extra_length); 187 pextra += N_ALIGN(pconfd->extra_length); 188 } 189 /* setup all interface and endpoint pointers */ 190 191 for (i = 0; i < nif; i++) { 192 193 pconfd->interface[i].altsetting = ifd; 194 ifd->endpoint = endd; 195 endd += pconf->interface[i].num_endpoints; 196 ifd++; 197 198 for (j = 0; j < pconf->interface[i].num_altsetting; j++) { 199 ifd->endpoint = endd; 200 endd += pconf->interface[i].altsetting[j].num_endpoints; 201 ifd++; 202 } 203 } 204 205 /* fill in all interface and endpoint data */ 206 207 for (i = 0; i < nif; i++) { 208 pinf = &pconf->interface[i]; 209 pconfd->interface[i].num_altsetting = pinf->num_altsetting + 1; 210 for (j = 0; j < pconfd->interface[i].num_altsetting; j++) { 211 if (j != 0) 212 pinf = &pconf->interface[i].altsetting[j - 1]; 213 ifd = &pconfd->interface[i].altsetting[j]; 214 ifd->bLength = pinf->desc.bLength; 215 ifd->bDescriptorType = pinf->desc.bDescriptorType; 216 ifd->bInterfaceNumber = pinf->desc.bInterfaceNumber; 217 ifd->bAlternateSetting = pinf->desc.bAlternateSetting; 218 ifd->bNumEndpoints = pinf->desc.bNumEndpoints; 219 ifd->bInterfaceClass = pinf->desc.bInterfaceClass; 220 ifd->bInterfaceSubClass = pinf->desc.bInterfaceSubClass; 221 ifd->bInterfaceProtocol = pinf->desc.bInterfaceProtocol; 222 ifd->iInterface = pinf->desc.iInterface; 223 if (pinf->extra.len != 0) { 224 ifd->extra_length = pinf->extra.len; 225 ifd->extra = pextra; 226 memcpy(pextra, pinf->extra.ptr, pinf->extra.len); 227 pextra += N_ALIGN(pinf->extra.len); 228 } 229 for (k = 0; k < pinf->num_endpoints; k++) { 230 pend = &pinf->endpoints[k]; 231 endd = &ifd->endpoint[k]; 232 endd->bLength = pend->desc.bLength; 233 endd->bDescriptorType = pend->desc.bDescriptorType; 234 endd->bEndpointAddress = pend->desc.bEndpointAddress; 235 endd->bmAttributes = pend->desc.bmAttributes; 236 endd->wMaxPacketSize = pend->desc.wMaxPacketSize; 237 endd->bInterval = pend->desc.bInterval; 238 endd->bRefresh = pend->desc.bRefresh; 239 endd->bSynchAddress = pend->desc.bSynchAddress; 240 if (pend->extra.len != 0) { 241 endd->extra_length = pend->extra.len; 242 endd->extra = pextra; 243 memcpy(pextra, pend->extra.ptr, pend->extra.len); 244 pextra += N_ALIGN(pend->extra.len); 245 } 246 } 247 } 248 } 249 250 free(pconf); 251 252 *config = pconfd; 253 254 return (0); /* success */ 255 } 256 257 int 258 libusb_get_config_descriptor_by_value(libusb_device *dev, 259 uint8_t bConfigurationValue, struct libusb_config_descriptor **config) 260 { 261 struct LIBUSB20_DEVICE_DESC_DECODED *pdesc; 262 struct libusb20_device *pdev; 263 int i; 264 int err; 265 266 if (dev == NULL || config == NULL) 267 return (LIBUSB_ERROR_INVALID_PARAM); 268 269 pdev = dev->os_priv; 270 pdesc = libusb20_dev_get_device_desc(pdev); 271 272 for (i = 0; i < pdesc->bNumConfigurations; i++) { 273 err = libusb_get_config_descriptor(dev, i, config); 274 if (err) 275 return (err); 276 277 if ((*config)->bConfigurationValue == bConfigurationValue) 278 return (0); /* success */ 279 280 libusb_free_config_descriptor(*config); 281 } 282 283 *config = NULL; 284 285 return (LIBUSB_ERROR_NOT_FOUND); 286 } 287 288 void 289 libusb_free_config_descriptor(struct libusb_config_descriptor *config) 290 { 291 free(config); 292 } 293 294 int 295 libusb_get_string_descriptor_ascii(libusb_device_handle *pdev, 296 uint8_t desc_index, unsigned char *data, int length) 297 { 298 if (pdev == NULL || data == NULL || length < 1) 299 return (LIBUSB20_ERROR_INVALID_PARAM); 300 301 /* put some default data into the destination buffer */ 302 data[0] = 0; 303 304 if (libusb20_dev_req_string_simple_sync(pdev, desc_index, 305 data, length) == 0) 306 return (strlen(data)); 307 308 return (LIBUSB_ERROR_OTHER); 309 } 310 311 int 312 libusb_get_descriptor(libusb_device_handle * devh, uint8_t desc_type, 313 uint8_t desc_index, uint8_t *data, int length) 314 { 315 return (libusb_control_transfer(devh, LIBUSB_ENDPOINT_IN, 316 LIBUSB_REQUEST_GET_DESCRIPTOR, (desc_type << 8) | desc_index, 0, data, 317 length, 1000)); 318 } 319