wps_dev_attr.c revision c5ec7f57ead87efa365800228aa0b09a12d9e6c4
1/* 2 * Wi-Fi Protected Setup - device attributes 3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "includes.h" 10 11#include "common.h" 12#include "wps_i.h" 13#include "wps_dev_attr.h" 14 15 16int wps_build_manufacturer(struct wps_device_data *dev, struct wpabuf *msg) 17{ 18 size_t len; 19 wpa_printf(MSG_DEBUG, "WPS: * Manufacturer"); 20 wpabuf_put_be16(msg, ATTR_MANUFACTURER); 21 len = dev->manufacturer ? os_strlen(dev->manufacturer) : 0; 22#ifndef CONFIG_WPS_STRICT 23 if (len == 0) { 24 /* 25 * Some deployed WPS implementations fail to parse zero-length 26 * attributes. As a workaround, send a space character if the 27 * device attribute string is empty. 28 */ 29 wpabuf_put_be16(msg, 1); 30 wpabuf_put_u8(msg, ' '); 31 return 0; 32 } 33#endif /* CONFIG_WPS_STRICT */ 34 wpabuf_put_be16(msg, len); 35 wpabuf_put_data(msg, dev->manufacturer, len); 36 return 0; 37} 38 39 40int wps_build_model_name(struct wps_device_data *dev, struct wpabuf *msg) 41{ 42 size_t len; 43 wpa_printf(MSG_DEBUG, "WPS: * Model Name"); 44 wpabuf_put_be16(msg, ATTR_MODEL_NAME); 45 len = dev->model_name ? os_strlen(dev->model_name) : 0; 46#ifndef CONFIG_WPS_STRICT 47 if (len == 0) { 48 /* 49 * Some deployed WPS implementations fail to parse zero-length 50 * attributes. As a workaround, send a space character if the 51 * device attribute string is empty. 52 */ 53 wpabuf_put_be16(msg, 1); 54 wpabuf_put_u8(msg, ' '); 55 return 0; 56 } 57#endif /* CONFIG_WPS_STRICT */ 58 wpabuf_put_be16(msg, len); 59 wpabuf_put_data(msg, dev->model_name, len); 60 return 0; 61} 62 63 64int wps_build_model_number(struct wps_device_data *dev, struct wpabuf *msg) 65{ 66 size_t len; 67 wpa_printf(MSG_DEBUG, "WPS: * Model Number"); 68 wpabuf_put_be16(msg, ATTR_MODEL_NUMBER); 69 len = dev->model_number ? os_strlen(dev->model_number) : 0; 70#ifndef CONFIG_WPS_STRICT 71 if (len == 0) { 72 /* 73 * Some deployed WPS implementations fail to parse zero-length 74 * attributes. As a workaround, send a space character if the 75 * device attribute string is empty. 76 */ 77 wpabuf_put_be16(msg, 1); 78 wpabuf_put_u8(msg, ' '); 79 return 0; 80 } 81#endif /* CONFIG_WPS_STRICT */ 82 wpabuf_put_be16(msg, len); 83 wpabuf_put_data(msg, dev->model_number, len); 84 return 0; 85} 86 87 88static int wps_build_serial_number(struct wps_device_data *dev, 89 struct wpabuf *msg) 90{ 91 size_t len; 92 wpa_printf(MSG_DEBUG, "WPS: * Serial Number"); 93 wpabuf_put_be16(msg, ATTR_SERIAL_NUMBER); 94 len = dev->serial_number ? os_strlen(dev->serial_number) : 0; 95#ifndef CONFIG_WPS_STRICT 96 if (len == 0) { 97 /* 98 * Some deployed WPS implementations fail to parse zero-length 99 * attributes. As a workaround, send a space character if the 100 * device attribute string is empty. 101 */ 102 wpabuf_put_be16(msg, 1); 103 wpabuf_put_u8(msg, ' '); 104 return 0; 105 } 106#endif /* CONFIG_WPS_STRICT */ 107 wpabuf_put_be16(msg, len); 108 wpabuf_put_data(msg, dev->serial_number, len); 109 return 0; 110} 111 112 113int wps_build_primary_dev_type(struct wps_device_data *dev, struct wpabuf *msg) 114{ 115 wpa_printf(MSG_DEBUG, "WPS: * Primary Device Type"); 116 wpabuf_put_be16(msg, ATTR_PRIMARY_DEV_TYPE); 117 wpabuf_put_be16(msg, WPS_DEV_TYPE_LEN); 118 wpabuf_put_data(msg, dev->pri_dev_type, WPS_DEV_TYPE_LEN); 119 return 0; 120} 121 122 123int wps_build_secondary_dev_type(struct wps_device_data *dev, 124 struct wpabuf *msg) 125{ 126 if (!dev->num_sec_dev_types) 127 return 0; 128 129 wpa_printf(MSG_DEBUG, "WPS: * Secondary Device Type"); 130 wpabuf_put_be16(msg, ATTR_SECONDARY_DEV_TYPE_LIST); 131 wpabuf_put_be16(msg, WPS_DEV_TYPE_LEN * dev->num_sec_dev_types); 132 wpabuf_put_data(msg, dev->sec_dev_type, 133 WPS_DEV_TYPE_LEN * dev->num_sec_dev_types); 134 135 return 0; 136} 137 138 139int wps_build_req_dev_type(struct wps_device_data *dev, struct wpabuf *msg, 140 unsigned int num_req_dev_types, 141 const u8 *req_dev_types) 142{ 143 unsigned int i; 144 145 for (i = 0; i < num_req_dev_types; i++) { 146 wpa_hexdump(MSG_DEBUG, "WPS: * Requested Device Type", 147 req_dev_types + i * WPS_DEV_TYPE_LEN, 148 WPS_DEV_TYPE_LEN); 149 wpabuf_put_be16(msg, ATTR_REQUESTED_DEV_TYPE); 150 wpabuf_put_be16(msg, WPS_DEV_TYPE_LEN); 151 wpabuf_put_data(msg, req_dev_types + i * WPS_DEV_TYPE_LEN, 152 WPS_DEV_TYPE_LEN); 153 } 154 155 return 0; 156} 157 158 159int wps_build_dev_name(struct wps_device_data *dev, struct wpabuf *msg) 160{ 161 size_t len; 162 wpa_printf(MSG_DEBUG, "WPS: * Device Name"); 163 wpabuf_put_be16(msg, ATTR_DEV_NAME); 164 len = dev->device_name ? os_strlen(dev->device_name) : 0; 165#ifndef CONFIG_WPS_STRICT 166 if (len == 0) { 167 /* 168 * Some deployed WPS implementations fail to parse zero-length 169 * attributes. As a workaround, send a space character if the 170 * device attribute string is empty. 171 */ 172 wpabuf_put_be16(msg, 1); 173 wpabuf_put_u8(msg, ' '); 174 return 0; 175 } 176#endif /* CONFIG_WPS_STRICT */ 177 wpabuf_put_be16(msg, len); 178 wpabuf_put_data(msg, dev->device_name, len); 179 return 0; 180} 181 182 183int wps_build_device_attrs(struct wps_device_data *dev, struct wpabuf *msg) 184{ 185 if (wps_build_manufacturer(dev, msg) || 186 wps_build_model_name(dev, msg) || 187 wps_build_model_number(dev, msg) || 188 wps_build_serial_number(dev, msg) || 189 wps_build_primary_dev_type(dev, msg) || 190 wps_build_dev_name(dev, msg)) 191 return -1; 192 return 0; 193} 194 195 196int wps_build_os_version(struct wps_device_data *dev, struct wpabuf *msg) 197{ 198 wpa_printf(MSG_DEBUG, "WPS: * OS Version"); 199 wpabuf_put_be16(msg, ATTR_OS_VERSION); 200 wpabuf_put_be16(msg, 4); 201 wpabuf_put_be32(msg, 0x80000000 | dev->os_version); 202 return 0; 203} 204 205 206int wps_build_rf_bands(struct wps_device_data *dev, struct wpabuf *msg) 207{ 208 wpa_printf(MSG_DEBUG, "WPS: * RF Bands (%x)", dev->rf_bands); 209 wpabuf_put_be16(msg, ATTR_RF_BANDS); 210 wpabuf_put_be16(msg, 1); 211 wpabuf_put_u8(msg, dev->rf_bands); 212 return 0; 213} 214 215 216int wps_build_vendor_ext(struct wps_device_data *dev, struct wpabuf *msg) 217{ 218 int i; 219 220 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 221 if (dev->vendor_ext[i] == NULL) 222 continue; 223 wpa_hexdump(MSG_DEBUG, "WPS: * Vendor Extension", 224 wpabuf_head_u8(dev->vendor_ext[i]), 225 wpabuf_len(dev->vendor_ext[i])); 226 wpabuf_put_be16(msg, ATTR_VENDOR_EXT); 227 wpabuf_put_be16(msg, wpabuf_len(dev->vendor_ext[i])); 228 wpabuf_put_buf(msg, dev->vendor_ext[i]); 229 } 230 231 return 0; 232} 233 234 235static int wps_process_manufacturer(struct wps_device_data *dev, const u8 *str, 236 size_t str_len) 237{ 238 if (str == NULL) { 239 wpa_printf(MSG_DEBUG, "WPS: No Manufacturer received"); 240 return -1; 241 } 242 243 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer", str, str_len); 244 245 os_free(dev->manufacturer); 246 dev->manufacturer = os_malloc(str_len + 1); 247 if (dev->manufacturer == NULL) 248 return -1; 249 os_memcpy(dev->manufacturer, str, str_len); 250 dev->manufacturer[str_len] = '\0'; 251 252 return 0; 253} 254 255 256static int wps_process_model_name(struct wps_device_data *dev, const u8 *str, 257 size_t str_len) 258{ 259 if (str == NULL) { 260 wpa_printf(MSG_DEBUG, "WPS: No Model Name received"); 261 return -1; 262 } 263 264 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name", str, str_len); 265 266 os_free(dev->model_name); 267 dev->model_name = os_malloc(str_len + 1); 268 if (dev->model_name == NULL) 269 return -1; 270 os_memcpy(dev->model_name, str, str_len); 271 dev->model_name[str_len] = '\0'; 272 273 return 0; 274} 275 276 277static int wps_process_model_number(struct wps_device_data *dev, const u8 *str, 278 size_t str_len) 279{ 280 if (str == NULL) { 281 wpa_printf(MSG_DEBUG, "WPS: No Model Number received"); 282 return -1; 283 } 284 285 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number", str, str_len); 286 287 os_free(dev->model_number); 288 dev->model_number = os_malloc(str_len + 1); 289 if (dev->model_number == NULL) 290 return -1; 291 os_memcpy(dev->model_number, str, str_len); 292 dev->model_number[str_len] = '\0'; 293 294 return 0; 295} 296 297 298static int wps_process_serial_number(struct wps_device_data *dev, 299 const u8 *str, size_t str_len) 300{ 301 if (str == NULL) { 302 wpa_printf(MSG_DEBUG, "WPS: No Serial Number received"); 303 return -1; 304 } 305 306 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number", str, str_len); 307 308 os_free(dev->serial_number); 309 dev->serial_number = os_malloc(str_len + 1); 310 if (dev->serial_number == NULL) 311 return -1; 312 os_memcpy(dev->serial_number, str, str_len); 313 dev->serial_number[str_len] = '\0'; 314 315 return 0; 316} 317 318 319static int wps_process_dev_name(struct wps_device_data *dev, const u8 *str, 320 size_t str_len) 321{ 322 if (str == NULL) { 323 wpa_printf(MSG_DEBUG, "WPS: No Device Name received"); 324 return -1; 325 } 326 327 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name", str, str_len); 328 329 os_free(dev->device_name); 330 dev->device_name = os_malloc(str_len + 1); 331 if (dev->device_name == NULL) 332 return -1; 333 os_memcpy(dev->device_name, str, str_len); 334 dev->device_name[str_len] = '\0'; 335 336 return 0; 337} 338 339 340static int wps_process_primary_dev_type(struct wps_device_data *dev, 341 const u8 *dev_type) 342{ 343#ifndef CONFIG_NO_STDOUT_DEBUG 344 char devtype[WPS_DEV_TYPE_BUFSIZE]; 345#endif /* CONFIG_NO_STDOUT_DEBUG */ 346 347 if (dev_type == NULL) { 348 wpa_printf(MSG_DEBUG, "WPS: No Primary Device Type received"); 349 return -1; 350 } 351 352 os_memcpy(dev->pri_dev_type, dev_type, WPS_DEV_TYPE_LEN); 353 wpa_printf(MSG_DEBUG, "WPS: Primary Device Type: %s", 354 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 355 sizeof(devtype))); 356 357 return 0; 358} 359 360 361int wps_process_device_attrs(struct wps_device_data *dev, 362 struct wps_parse_attr *attr) 363{ 364 if (wps_process_manufacturer(dev, attr->manufacturer, 365 attr->manufacturer_len) || 366 wps_process_model_name(dev, attr->model_name, 367 attr->model_name_len) || 368 wps_process_model_number(dev, attr->model_number, 369 attr->model_number_len) || 370 wps_process_serial_number(dev, attr->serial_number, 371 attr->serial_number_len) || 372 wps_process_primary_dev_type(dev, attr->primary_dev_type) || 373 wps_process_dev_name(dev, attr->dev_name, attr->dev_name_len)) 374 return -1; 375 return 0; 376} 377 378 379int wps_process_os_version(struct wps_device_data *dev, const u8 *ver) 380{ 381 if (ver == NULL) { 382 wpa_printf(MSG_DEBUG, "WPS: No OS Version received"); 383 return -1; 384 } 385 386 dev->os_version = WPA_GET_BE32(ver); 387 wpa_printf(MSG_DEBUG, "WPS: OS Version %08x", dev->os_version); 388 389 return 0; 390} 391 392 393int wps_process_rf_bands(struct wps_device_data *dev, const u8 *bands) 394{ 395 if (bands == NULL) { 396 wpa_printf(MSG_DEBUG, "WPS: No RF Bands received"); 397 return -1; 398 } 399 400 dev->rf_bands = *bands; 401 wpa_printf(MSG_DEBUG, "WPS: Enrollee RF Bands 0x%x", dev->rf_bands); 402 403 return 0; 404} 405 406 407void wps_device_data_dup(struct wps_device_data *dst, 408 const struct wps_device_data *src) 409{ 410 if (src->device_name) 411 dst->device_name = os_strdup(src->device_name); 412 if (src->manufacturer) 413 dst->manufacturer = os_strdup(src->manufacturer); 414 if (src->model_name) 415 dst->model_name = os_strdup(src->model_name); 416 if (src->model_number) 417 dst->model_number = os_strdup(src->model_number); 418 if (src->serial_number) 419 dst->serial_number = os_strdup(src->serial_number); 420 os_memcpy(dst->pri_dev_type, src->pri_dev_type, WPS_DEV_TYPE_LEN); 421 dst->os_version = src->os_version; 422 dst->rf_bands = src->rf_bands; 423} 424 425 426void wps_device_data_free(struct wps_device_data *dev) 427{ 428 os_free(dev->device_name); 429 dev->device_name = NULL; 430 os_free(dev->manufacturer); 431 dev->manufacturer = NULL; 432 os_free(dev->model_name); 433 dev->model_name = NULL; 434 os_free(dev->model_number); 435 dev->model_number = NULL; 436 os_free(dev->serial_number); 437 dev->serial_number = NULL; 438} 439