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 88int wps_build_serial_number(struct wps_device_data *dev, struct wpabuf *msg) 89{ 90 size_t len; 91 wpa_printf(MSG_DEBUG, "WPS: * Serial Number"); 92 wpabuf_put_be16(msg, ATTR_SERIAL_NUMBER); 93 len = dev->serial_number ? os_strlen(dev->serial_number) : 0; 94#ifndef CONFIG_WPS_STRICT 95 if (len == 0) { 96 /* 97 * Some deployed WPS implementations fail to parse zero-length 98 * attributes. As a workaround, send a space character if the 99 * device attribute string is empty. 100 */ 101 wpabuf_put_be16(msg, 1); 102 wpabuf_put_u8(msg, ' '); 103 return 0; 104 } 105#endif /* CONFIG_WPS_STRICT */ 106 wpabuf_put_be16(msg, len); 107 wpabuf_put_data(msg, dev->serial_number, len); 108 return 0; 109} 110 111 112int wps_build_primary_dev_type(struct wps_device_data *dev, struct wpabuf *msg) 113{ 114 wpa_printf(MSG_DEBUG, "WPS: * Primary Device Type"); 115 wpabuf_put_be16(msg, ATTR_PRIMARY_DEV_TYPE); 116 wpabuf_put_be16(msg, WPS_DEV_TYPE_LEN); 117 wpabuf_put_data(msg, dev->pri_dev_type, WPS_DEV_TYPE_LEN); 118 return 0; 119} 120 121 122int wps_build_secondary_dev_type(struct wps_device_data *dev, 123 struct wpabuf *msg) 124{ 125 if (!dev->num_sec_dev_types) 126 return 0; 127 128 wpa_printf(MSG_DEBUG, "WPS: * Secondary Device Type"); 129 wpabuf_put_be16(msg, ATTR_SECONDARY_DEV_TYPE_LIST); 130 wpabuf_put_be16(msg, WPS_DEV_TYPE_LEN * dev->num_sec_dev_types); 131 wpabuf_put_data(msg, dev->sec_dev_type, 132 WPS_DEV_TYPE_LEN * dev->num_sec_dev_types); 133 134 return 0; 135} 136 137 138int wps_build_req_dev_type(struct wps_device_data *dev, struct wpabuf *msg, 139 unsigned int num_req_dev_types, 140 const u8 *req_dev_types) 141{ 142 unsigned int i; 143 144 for (i = 0; i < num_req_dev_types; i++) { 145 wpa_hexdump(MSG_DEBUG, "WPS: * Requested Device Type", 146 req_dev_types + i * WPS_DEV_TYPE_LEN, 147 WPS_DEV_TYPE_LEN); 148 wpabuf_put_be16(msg, ATTR_REQUESTED_DEV_TYPE); 149 wpabuf_put_be16(msg, WPS_DEV_TYPE_LEN); 150 wpabuf_put_data(msg, req_dev_types + i * WPS_DEV_TYPE_LEN, 151 WPS_DEV_TYPE_LEN); 152 } 153 154 return 0; 155} 156 157 158int wps_build_dev_name(struct wps_device_data *dev, struct wpabuf *msg) 159{ 160 size_t len; 161 wpa_printf(MSG_DEBUG, "WPS: * Device Name"); 162 wpabuf_put_be16(msg, ATTR_DEV_NAME); 163 len = dev->device_name ? os_strlen(dev->device_name) : 0; 164#ifndef CONFIG_WPS_STRICT 165 if (len == 0) { 166 /* 167 * Some deployed WPS implementations fail to parse zero-length 168 * attributes. As a workaround, send a space character if the 169 * device attribute string is empty. 170 */ 171 wpabuf_put_be16(msg, 1); 172 wpabuf_put_u8(msg, ' '); 173 return 0; 174 } 175#endif /* CONFIG_WPS_STRICT */ 176 wpabuf_put_be16(msg, len); 177 wpabuf_put_data(msg, dev->device_name, len); 178 return 0; 179} 180 181 182int wps_build_device_attrs(struct wps_device_data *dev, struct wpabuf *msg) 183{ 184 if (wps_build_manufacturer(dev, msg) || 185 wps_build_model_name(dev, msg) || 186 wps_build_model_number(dev, msg) || 187 wps_build_serial_number(dev, msg) || 188 wps_build_primary_dev_type(dev, msg) || 189 wps_build_dev_name(dev, msg)) 190 return -1; 191 return 0; 192} 193 194 195int wps_build_os_version(struct wps_device_data *dev, struct wpabuf *msg) 196{ 197 wpa_printf(MSG_DEBUG, "WPS: * OS Version"); 198 wpabuf_put_be16(msg, ATTR_OS_VERSION); 199 wpabuf_put_be16(msg, 4); 200 wpabuf_put_be32(msg, 0x80000000 | dev->os_version); 201 return 0; 202} 203 204 205int wps_build_vendor_ext_m1(struct wps_device_data *dev, struct wpabuf *msg) 206{ 207 if (dev->vendor_ext_m1 != NULL) { 208 wpa_hexdump(MSG_DEBUG, "WPS: * Vendor Extension M1", 209 wpabuf_head_u8(dev->vendor_ext_m1), 210 wpabuf_len(dev->vendor_ext_m1)); 211 wpabuf_put_be16(msg, ATTR_VENDOR_EXT); 212 wpabuf_put_be16(msg, wpabuf_len(dev->vendor_ext_m1)); 213 wpabuf_put_buf(msg, dev->vendor_ext_m1); 214 } 215 return 0; 216} 217 218 219int wps_build_rf_bands(struct wps_device_data *dev, struct wpabuf *msg, 220 u8 rf_band) 221{ 222 return wps_build_rf_bands_attr(msg, rf_band ? rf_band : dev->rf_bands); 223} 224 225 226int wps_build_vendor_ext(struct wps_device_data *dev, struct wpabuf *msg) 227{ 228 int i; 229 230 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 231 if (dev->vendor_ext[i] == NULL) 232 continue; 233 wpa_hexdump(MSG_DEBUG, "WPS: * Vendor Extension", 234 wpabuf_head_u8(dev->vendor_ext[i]), 235 wpabuf_len(dev->vendor_ext[i])); 236 wpabuf_put_be16(msg, ATTR_VENDOR_EXT); 237 wpabuf_put_be16(msg, wpabuf_len(dev->vendor_ext[i])); 238 wpabuf_put_buf(msg, dev->vendor_ext[i]); 239 } 240 241 return 0; 242} 243 244 245int wps_build_application_ext(struct wps_device_data *dev, struct wpabuf *msg) 246{ 247 if (!dev->application_ext) 248 return 0; 249 250 wpa_hexdump_buf(MSG_DEBUG, "WPS: * Application Extension", 251 dev->application_ext); 252 wpabuf_put_be16(msg, ATTR_APPLICATION_EXT); 253 wpabuf_put_be16(msg, wpabuf_len(dev->application_ext)); 254 wpabuf_put_buf(msg, dev->application_ext); 255 256 return 0; 257} 258 259 260static int wps_process_manufacturer(struct wps_device_data *dev, const u8 *str, 261 size_t str_len) 262{ 263 if (str == NULL) { 264 wpa_printf(MSG_DEBUG, "WPS: No Manufacturer received"); 265 return -1; 266 } 267 268 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer", str, str_len); 269 270 os_free(dev->manufacturer); 271 dev->manufacturer = dup_binstr(str, str_len); 272 if (dev->manufacturer == NULL) 273 return -1; 274 275 return 0; 276} 277 278 279static int wps_process_model_name(struct wps_device_data *dev, const u8 *str, 280 size_t str_len) 281{ 282 if (str == NULL) { 283 wpa_printf(MSG_DEBUG, "WPS: No Model Name received"); 284 return -1; 285 } 286 287 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name", str, str_len); 288 289 os_free(dev->model_name); 290 dev->model_name = dup_binstr(str, str_len); 291 if (dev->model_name == NULL) 292 return -1; 293 294 return 0; 295} 296 297 298static int wps_process_model_number(struct wps_device_data *dev, const u8 *str, 299 size_t str_len) 300{ 301 if (str == NULL) { 302 wpa_printf(MSG_DEBUG, "WPS: No Model Number received"); 303 return -1; 304 } 305 306 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number", str, str_len); 307 308 os_free(dev->model_number); 309 dev->model_number = dup_binstr(str, str_len); 310 if (dev->model_number == NULL) 311 return -1; 312 313 return 0; 314} 315 316 317static int wps_process_serial_number(struct wps_device_data *dev, 318 const u8 *str, size_t str_len) 319{ 320 if (str == NULL) { 321 wpa_printf(MSG_DEBUG, "WPS: No Serial Number received"); 322 return -1; 323 } 324 325 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number", str, str_len); 326 327 os_free(dev->serial_number); 328 dev->serial_number = dup_binstr(str, str_len); 329 if (dev->serial_number == NULL) 330 return -1; 331 332 return 0; 333} 334 335 336static int wps_process_dev_name(struct wps_device_data *dev, const u8 *str, 337 size_t str_len) 338{ 339 if (str == NULL) { 340 wpa_printf(MSG_DEBUG, "WPS: No Device Name received"); 341 return -1; 342 } 343 344 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name", str, str_len); 345 346 os_free(dev->device_name); 347 dev->device_name = dup_binstr(str, str_len); 348 if (dev->device_name == NULL) 349 return -1; 350 351 return 0; 352} 353 354 355static int wps_process_primary_dev_type(struct wps_device_data *dev, 356 const u8 *dev_type) 357{ 358#ifndef CONFIG_NO_STDOUT_DEBUG 359 char devtype[WPS_DEV_TYPE_BUFSIZE]; 360#endif /* CONFIG_NO_STDOUT_DEBUG */ 361 362 if (dev_type == NULL) { 363 wpa_printf(MSG_DEBUG, "WPS: No Primary Device Type received"); 364 return -1; 365 } 366 367 os_memcpy(dev->pri_dev_type, dev_type, WPS_DEV_TYPE_LEN); 368 wpa_printf(MSG_DEBUG, "WPS: Primary Device Type: %s", 369 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 370 sizeof(devtype))); 371 372 return 0; 373} 374 375 376int wps_process_device_attrs(struct wps_device_data *dev, 377 struct wps_parse_attr *attr) 378{ 379 if (wps_process_manufacturer(dev, attr->manufacturer, 380 attr->manufacturer_len) || 381 wps_process_model_name(dev, attr->model_name, 382 attr->model_name_len) || 383 wps_process_model_number(dev, attr->model_number, 384 attr->model_number_len) || 385 wps_process_serial_number(dev, attr->serial_number, 386 attr->serial_number_len) || 387 wps_process_primary_dev_type(dev, attr->primary_dev_type) || 388 wps_process_dev_name(dev, attr->dev_name, attr->dev_name_len)) 389 return -1; 390 return 0; 391} 392 393 394int wps_process_os_version(struct wps_device_data *dev, const u8 *ver) 395{ 396 if (ver == NULL) { 397 wpa_printf(MSG_DEBUG, "WPS: No OS Version received"); 398 return -1; 399 } 400 401 dev->os_version = WPA_GET_BE32(ver); 402 wpa_printf(MSG_DEBUG, "WPS: OS Version %08x", dev->os_version); 403 404 return 0; 405} 406 407 408void wps_process_vendor_ext_m1(struct wps_device_data *dev, const u8 ext) 409{ 410 dev->multi_ap_ext = ext; 411 wpa_printf(MSG_DEBUG, "WPS: Multi-AP extension value %02x", 412 dev->multi_ap_ext); 413} 414 415 416int wps_process_rf_bands(struct wps_device_data *dev, const u8 *bands) 417{ 418 if (bands == NULL) { 419 wpa_printf(MSG_DEBUG, "WPS: No RF Bands received"); 420 return -1; 421 } 422 423 dev->rf_bands = *bands; 424 wpa_printf(MSG_DEBUG, "WPS: Enrollee RF Bands 0x%x", dev->rf_bands); 425 426 return 0; 427} 428 429 430void wps_device_data_free(struct wps_device_data *dev) 431{ 432 os_free(dev->device_name); 433 dev->device_name = NULL; 434 os_free(dev->manufacturer); 435 dev->manufacturer = NULL; 436 os_free(dev->model_name); 437 dev->model_name = NULL; 438 os_free(dev->model_number); 439 dev->model_number = NULL; 440 os_free(dev->serial_number); 441 dev->serial_number = NULL; 442 wpabuf_free(dev->application_ext); 443 dev->application_ext = NULL; 444} 445