1 /* 2 * iwinfo - Wireless Information Library - NL80211 Backend 3 * 4 * Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org> 5 * 6 * The iwinfo library is free software: you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License version 2 8 * as published by the Free Software Foundation. 9 * 10 * The iwinfo library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 13 * See the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with the iwinfo library. If not, see http://www.gnu.org/licenses/. 17 * 18 * The signal handling code is derived from the official madwifi tools, 19 * wlanconfig.c in particular. The encryption property handling was 20 * inspired by the hostapd madwifi driver. 21 * 22 * Parts of this code are derived from the Linux iw utility. 23 */ 24 25 #include <limits.h> 26 #include <glob.h> 27 #include <fnmatch.h> 28 #include <stdarg.h> 29 #include <stdlib.h> 30 31 #include "iwinfo_nl80211.h" 32 33 #define min(x, y) ((x) < (y)) ? (x) : (y) 34 35 #define BIT(x) (1ULL<<(x)) 36 37 static struct nl80211_state *nls = NULL; 38 39 static void nl80211_close(void) 40 { 41 if (nls) 42 { 43 if (nls->nlctrl) 44 genl_family_put(nls->nlctrl); 45 46 if (nls->nl80211) 47 genl_family_put(nls->nl80211); 48 49 if (nls->nl_sock) 50 nl_socket_free(nls->nl_sock); 51 52 if (nls->nl_cache) 53 nl_cache_free(nls->nl_cache); 54 55 free(nls); 56 nls = NULL; 57 } 58 } 59 60 static int nl80211_init(void) 61 { 62 int err, fd; 63 64 if (!nls) 65 { 66 nls = malloc(sizeof(struct nl80211_state)); 67 if (!nls) { 68 err = -ENOMEM; 69 goto err; 70 } 71 72 memset(nls, 0, sizeof(*nls)); 73 74 nls->nl_sock = nl_socket_alloc(); 75 if (!nls->nl_sock) { 76 err = -ENOMEM; 77 goto err; 78 } 79 80 if (genl_connect(nls->nl_sock)) { 81 err = -ENOLINK; 82 goto err; 83 } 84 85 fd = nl_socket_get_fd(nls->nl_sock); 86 if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) < 0) { 87 err = -EINVAL; 88 goto err; 89 } 90 91 if (genl_ctrl_alloc_cache(nls->nl_sock, &nls->nl_cache)) { 92 err = -ENOMEM; 93 goto err; 94 } 95 96 nls->nl80211 = genl_ctrl_search_by_name(nls->nl_cache, "nl80211"); 97 if (!nls->nl80211) { 98 err = -ENOENT; 99 goto err; 100 } 101 102 nls->nlctrl = genl_ctrl_search_by_name(nls->nl_cache, "nlctrl"); 103 if (!nls->nlctrl) { 104 err = -ENOENT; 105 goto err; 106 } 107 } 108 109 return 0; 110 111 112 err: 113 nl80211_close(); 114 return err; 115 } 116 117 static int nl80211_readint(const char *path) 118 { 119 int fd; 120 int rv = -1; 121 char buffer[16]; 122 123 if ((fd = open(path, O_RDONLY)) > -1) 124 { 125 if (read(fd, buffer, sizeof(buffer)) > 0) 126 rv = atoi(buffer); 127 128 close(fd); 129 } 130 131 return rv; 132 } 133 134 static int nl80211_readstr(const char *path, char *buffer, int length) 135 { 136 int fd; 137 int rv = -1; 138 139 if ((fd = open(path, O_RDONLY)) > -1) 140 { 141 if ((rv = read(fd, buffer, length - 1)) > 0) 142 { 143 if (buffer[rv - 1] == '\n') 144 rv--; 145 146 buffer[rv] = 0; 147 } 148 149 close(fd); 150 } 151 152 return rv; 153 } 154 155 156 static int nl80211_msg_error(struct sockaddr_nl *nla, 157 struct nlmsgerr *err, void *arg) 158 { 159 int *ret = arg; 160 *ret = err->error; 161 return NL_STOP; 162 } 163 164 static int nl80211_msg_finish(struct nl_msg *msg, void *arg) 165 { 166 int *ret = arg; 167 *ret = 0; 168 return NL_SKIP; 169 } 170 171 static int nl80211_msg_ack(struct nl_msg *msg, void *arg) 172 { 173 int *ret = arg; 174 *ret = 0; 175 return NL_STOP; 176 } 177 178 static int nl80211_msg_response(struct nl_msg *msg, void *arg) 179 { 180 return NL_SKIP; 181 } 182 183 static void nl80211_free(struct nl80211_msg_conveyor *cv) 184 { 185 if (cv) 186 { 187 if (cv->cb) 188 nl_cb_put(cv->cb); 189 190 if (cv->msg) 191 nlmsg_free(cv->msg); 192 193 cv->cb = NULL; 194 cv->msg = NULL; 195 } 196 } 197 198 static struct nl80211_msg_conveyor * nl80211_new(struct genl_family *family, 199 int cmd, int flags) 200 { 201 static struct nl80211_msg_conveyor cv; 202 203 struct nl_msg *req = NULL; 204 struct nl_cb *cb = NULL; 205 206 req = nlmsg_alloc(); 207 if (!req) 208 goto err; 209 210 cb = nl_cb_alloc(NL_CB_DEFAULT); 211 if (!cb) 212 goto err; 213 214 genlmsg_put(req, 0, 0, genl_family_get_id(family), 0, flags, cmd, 0); 215 216 cv.msg = req; 217 cv.cb = cb; 218 219 return &cv; 220 221 err: 222 if (req) 223 nlmsg_free(req); 224 225 return NULL; 226 } 227 228 static struct nl80211_msg_conveyor * nl80211_ctl(int cmd, int flags) 229 { 230 if (nl80211_init() < 0) 231 return NULL; 232 233 return nl80211_new(nls->nlctrl, cmd, flags); 234 } 235 236 static int nl80211_phy_idx_from_uci_path(struct uci_section *s) 237 { 238 size_t linklen, pathlen; 239 char buf[128], *link; 240 struct dirent *e; 241 const char *path; 242 int idx = -1; 243 DIR *d; 244 245 path = uci_lookup_option_string(uci_ctx, s, "path"); 246 if (!path) 247 return -1; 248 249 if ((d = opendir("/sys/class/ieee80211")) != NULL) 250 { 251 while ((e = readdir(d)) != NULL) 252 { 253 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/device", e->d_name); 254 255 link = realpath(buf, NULL); 256 257 if (link == NULL) 258 continue; 259 260 linklen = strlen(link); 261 pathlen = strlen(path); 262 263 if (pathlen >= linklen || strcmp(link + (linklen - pathlen), path)) 264 linklen = 0; 265 266 free(link); 267 268 if (linklen == 0) 269 continue; 270 271 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", e->d_name); 272 273 idx = nl80211_readint(buf); 274 275 if (idx >= 0) 276 break; 277 } 278 279 closedir(d); 280 } 281 282 return idx; 283 } 284 285 static int nl80211_phy_idx_from_uci_macaddr(struct uci_section *s) 286 { 287 const char *opt; 288 char buf[128]; 289 int i, idx = -1; 290 glob_t gl; 291 292 opt = uci_lookup_option_string(uci_ctx, s, "macaddr"); 293 if (!opt) 294 return -1; 295 296 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/*"); /**/ 297 if (glob(buf, 0, NULL, &gl)) 298 return -1; 299 300 for (i = 0; i < gl.gl_pathc; i++) 301 { 302 snprintf(buf, sizeof(buf), "%s/macaddress", gl.gl_pathv[i]); 303 if (nl80211_readstr(buf, buf, sizeof(buf)) <= 0) 304 continue; 305 306 if (fnmatch(opt, buf, FNM_CASEFOLD)) 307 continue; 308 309 snprintf(buf, sizeof(buf), "%s/index", gl.gl_pathv[i]); 310 if ((idx = nl80211_readint(buf)) > -1) 311 break; 312 } 313 314 globfree(&gl); 315 316 return idx; 317 } 318 319 static int nl80211_phy_idx_from_uci_phy(struct uci_section *s) 320 { 321 const char *opt; 322 char buf[128]; 323 324 opt = uci_lookup_option_string(uci_ctx, s, "phy"); 325 if (!opt) 326 return -1; 327 328 snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", opt); 329 return nl80211_readint(buf); 330 } 331 332 static int nl80211_phy_idx_from_uci(const char *name) 333 { 334 struct uci_section *s; 335 int idx = -1; 336 337 s = iwinfo_uci_get_radio(name, "mac80211"); 338 if (!s) 339 goto free; 340 341 idx = nl80211_phy_idx_from_uci_path(s); 342 343 if (idx < 0) 344 idx = nl80211_phy_idx_from_uci_macaddr(s); 345 346 if (idx < 0) 347 idx = nl80211_phy_idx_from_uci_phy(s); 348 349 free: 350 iwinfo_uci_free(); 351 return idx; 352 } 353 354 static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname, 355 int cmd, int flags) 356 { 357 int ifidx = -1, phyidx = -1; 358 struct nl80211_msg_conveyor *cv; 359 360 if (ifname == NULL) 361 return NULL; 362 363 if (nl80211_init() < 0) 364 return NULL; 365 366 if (!strncmp(ifname, "phy", 3)) 367 phyidx = atoi(&ifname[3]); 368 else if (!strncmp(ifname, "radio", 5)) 369 phyidx = nl80211_phy_idx_from_uci(ifname); 370 371 if (!strncmp(ifname, "mon.", 4)) 372 ifidx = if_nametoindex(&ifname[4]); 373 else 374 ifidx = if_nametoindex(ifname); 375 376 /* Valid ifidx must be greater than 0 */ 377 if ((ifidx <= 0) && (phyidx < 0)) 378 return NULL; 379 380 cv = nl80211_new(nls->nl80211, cmd, flags); 381 if (!cv) 382 return NULL; 383 384 if (ifidx > 0) 385 NLA_PUT_U32(cv->msg, NL80211_ATTR_IFINDEX, ifidx); 386 else if (phyidx > -1) 387 NLA_PUT_U32(cv->msg, NL80211_ATTR_WIPHY, phyidx); 388 389 return cv; 390 391 nla_put_failure: 392 nl80211_free(cv); 393 return NULL; 394 } 395 396 static int nl80211_send(struct nl80211_msg_conveyor *cv, 397 int (*cb_func)(struct nl_msg *, void *), 398 void *cb_arg) 399 { 400 static struct nl80211_msg_conveyor rcv; 401 int err; 402 403 if (cb_func) 404 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg); 405 else 406 nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv); 407 408 err = nl_send_auto_complete(nls->nl_sock, cv->msg); 409 410 if (err < 0) 411 goto out; 412 413 err = 1; 414 415 nl_cb_err(cv->cb, NL_CB_CUSTOM, nl80211_msg_error, &err); 416 nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err); 417 nl_cb_set(cv->cb, NL_CB_ACK, NL_CB_CUSTOM, nl80211_msg_ack, &err); 418 419 while (err > 0) 420 nl_recvmsgs(nls->nl_sock, cv->cb); 421 422 out: 423 nl80211_free(cv); 424 return err; 425 } 426 427 static int nl80211_request(const char *ifname, int cmd, int flags, 428 int (*cb_func)(struct nl_msg *, void *), 429 void *cb_arg) 430 { 431 struct nl80211_msg_conveyor *cv; 432 433 cv = nl80211_msg(ifname, cmd, flags); 434 435 if (!cv) 436 return -ENOMEM; 437 438 return nl80211_send(cv, cb_func, cb_arg); 439 } 440 441 static struct nlattr ** nl80211_parse(struct nl_msg *msg) 442 { 443 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 444 static struct nlattr *attr[NL80211_ATTR_MAX + 1]; 445 446 nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 447 genlmsg_attrlen(gnlh, 0), NULL); 448 449 return attr; 450 } 451 452 static int nl80211_get_protocol_features_cb(struct nl_msg *msg, void *arg) 453 { 454 uint32_t *features = arg; 455 struct nlattr **attr = nl80211_parse(msg); 456 457 if (attr[NL80211_ATTR_PROTOCOL_FEATURES]) 458 *features = nla_get_u32(attr[NL80211_ATTR_PROTOCOL_FEATURES]); 459 460 return NL_SKIP; 461 } 462 463 static int nl80211_get_protocol_features(const char *ifname) 464 { 465 struct nl80211_msg_conveyor *req; 466 uint32_t features = 0; 467 468 req = nl80211_msg(ifname, NL80211_CMD_GET_PROTOCOL_FEATURES, 0); 469 if (req) { 470 nl80211_send(req, nl80211_get_protocol_features_cb, &features); 471 nl80211_free(req); 472 } 473 474 return features; 475 } 476 477 static int nl80211_subscribe_cb(struct nl_msg *msg, void *arg) 478 { 479 struct nl80211_group_conveyor *cv = arg; 480 481 struct nlattr **attr = nl80211_parse(msg); 482 struct nlattr *mgrpinfo[CTRL_ATTR_MCAST_GRP_MAX + 1]; 483 struct nlattr *mgrp; 484 int mgrpidx; 485 486 if (!attr[CTRL_ATTR_MCAST_GROUPS]) 487 return NL_SKIP; 488 489 nla_for_each_nested(mgrp, attr[CTRL_ATTR_MCAST_GROUPS], mgrpidx) 490 { 491 nla_parse(mgrpinfo, CTRL_ATTR_MCAST_GRP_MAX, 492 nla_data(mgrp), nla_len(mgrp), NULL); 493 494 if (mgrpinfo[CTRL_ATTR_MCAST_GRP_ID] && 495 mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME] && 496 !strncmp(nla_data(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]), 497 cv->name, nla_len(mgrpinfo[CTRL_ATTR_MCAST_GRP_NAME]))) 498 { 499 cv->id = nla_get_u32(mgrpinfo[CTRL_ATTR_MCAST_GRP_ID]); 500 break; 501 } 502 } 503 504 return NL_SKIP; 505 } 506 507 static int nl80211_subscribe(const char *family, const char *group) 508 { 509 struct nl80211_group_conveyor cv = { .name = group, .id = -ENOENT }; 510 struct nl80211_msg_conveyor *req; 511 int err; 512 513 req = nl80211_ctl(CTRL_CMD_GETFAMILY, 0); 514 if (req) 515 { 516 NLA_PUT_STRING(req->msg, CTRL_ATTR_FAMILY_NAME, family); 517 err = nl80211_send(req, nl80211_subscribe_cb, &cv); 518 519 if (err) 520 return err; 521 522 return nl_socket_add_membership(nls->nl_sock, cv.id); 523 524 nla_put_failure: 525 nl80211_free(req); 526 } 527 528 return -ENOMEM; 529 } 530 531 532 static int nl80211_wait_cb(struct nl_msg *msg, void *arg) 533 { 534 struct nl80211_event_conveyor *cv = arg; 535 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 536 537 if (cv->wait[gnlh->cmd / 32] & (1 << (gnlh->cmd % 32))) 538 cv->recv = gnlh->cmd; 539 540 return NL_SKIP; 541 } 542 543 static int nl80211_wait_seq_check(struct nl_msg *msg, void *arg) 544 { 545 return NL_OK; 546 } 547 548 static int __nl80211_wait(const char *family, const char *group, ...) 549 { 550 struct nl80211_event_conveyor cv = { }; 551 struct nl_cb *cb; 552 int err = 0; 553 int cmd; 554 va_list ap; 555 556 if (nl80211_subscribe(family, group)) 557 return -ENOENT; 558 559 cb = nl_cb_alloc(NL_CB_DEFAULT); 560 561 if (!cb) 562 return -ENOMEM; 563 564 nl_cb_err(cb, NL_CB_CUSTOM, nl80211_msg_error, &err); 565 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, nl80211_wait_seq_check, NULL); 566 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_wait_cb, &cv ); 567 568 va_start(ap, group); 569 570 for (cmd = va_arg(ap, int); cmd != 0; cmd = va_arg(ap, int)) 571 cv.wait[cmd / 32] |= (1 << (cmd % 32)); 572 573 va_end(ap); 574 575 while (!cv.recv && !err) 576 nl_recvmsgs(nls->nl_sock, cb); 577 578 nl_cb_put(cb); 579 580 return err; 581 } 582 583 #define nl80211_wait(family, group, ...) \ 584 __nl80211_wait(family, group, __VA_ARGS__, 0) 585 586 587 static int nl80211_freq2channel(int freq) 588 { 589 if (freq == 2484) 590 return 14; 591 else if (freq < 2484) 592 return (freq - 2407) / 5; 593 else if (freq >= 4910 && freq <= 4980) 594 return (freq - 4000) / 5; 595 else if(freq >= 56160 + 2160 * 1 && freq <= 56160 + 2160 * 6) 596 return (freq - 56160) / 2160; 597 else 598 return (freq - 5000) / 5; 599 } 600 601 static int nl80211_channel2freq(int channel, const char *band) 602 { 603 if (!band || band[0] != 'a') 604 { 605 if (channel == 14) 606 return 2484; 607 else if (channel < 14) 608 return (channel * 5) + 2407; 609 } 610 else if ( strcmp(band, "ad") == 0) 611 { 612 return 56160 + 2160 * channel; 613 } 614 else 615 { 616 if (channel >= 182 && channel <= 196) 617 return (channel * 5) + 4000; 618 else 619 return (channel * 5) + 5000; 620 } 621 622 return 0; 623 } 624 625 static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg) 626 { 627 char *buf = arg; 628 struct nlattr **attr = nl80211_parse(msg); 629 630 if (attr[NL80211_ATTR_WIPHY_NAME]) 631 memcpy(buf, nla_data(attr[NL80211_ATTR_WIPHY_NAME]), 632 nla_len(attr[NL80211_ATTR_WIPHY_NAME])); 633 else 634 buf[0] = 0; 635 636 return NL_SKIP; 637 } 638 639 static char * nl80211_ifname2phy(const char *ifname) 640 { 641 static char phy[32] = { 0 }; 642 643 memset(phy, 0, sizeof(phy)); 644 645 nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0, 646 nl80211_ifname2phy_cb, phy); 647 648 return phy[0] ? phy : NULL; 649 } 650 651 static char * nl80211_phy2ifname(const char *ifname) 652 { 653 int ifidx = -1, cifidx = -1, phyidx = -1; 654 char buffer[64]; 655 static char nif[IFNAMSIZ] = { 0 }; 656 657 DIR *d; 658 struct dirent *e; 659 660 /* Only accept phy name of the form phy%d or radio%d */ 661 if (!ifname) 662 return NULL; 663 else if (!strncmp(ifname, "phy", 3)) 664 phyidx = atoi(&ifname[3]); 665 else if (!strncmp(ifname, "radio", 5)) 666 phyidx = nl80211_phy_idx_from_uci(ifname); 667 else 668 return NULL; 669 670 memset(nif, 0, sizeof(nif)); 671 672 if (phyidx > -1) 673 { 674 if ((d = opendir("/sys/class/net")) != NULL) 675 { 676 while ((e = readdir(d)) != NULL) 677 { 678 snprintf(buffer, sizeof(buffer), 679 "/sys/class/net/%s/phy80211/index", e->d_name); 680 681 if (nl80211_readint(buffer) == phyidx) 682 { 683 snprintf(buffer, sizeof(buffer), 684 "/sys/class/net/%s/ifindex", e->d_name); 685 686 if ((cifidx = nl80211_readint(buffer)) >= 0 && 687 ((ifidx < 0) || (cifidx < ifidx))) 688 { 689 ifidx = cifidx; 690 strncpy(nif, e->d_name, sizeof(nif) - 1); 691 } 692 } 693 } 694 695 closedir(d); 696 } 697 } 698 699 return nif[0] ? nif : NULL; 700 } 701 702 static int nl80211_get_mode_cb(struct nl_msg *msg, void *arg) 703 { 704 int *mode = arg; 705 struct nlattr **tb = nl80211_parse(msg); 706 const int ifmodes[NL80211_IFTYPE_MAX + 1] = { 707 IWINFO_OPMODE_UNKNOWN, /* unspecified */ 708 IWINFO_OPMODE_ADHOC, /* IBSS */ 709 IWINFO_OPMODE_CLIENT, /* managed */ 710 IWINFO_OPMODE_MASTER, /* AP */ 711 IWINFO_OPMODE_AP_VLAN, /* AP/VLAN */ 712 IWINFO_OPMODE_WDS, /* WDS */ 713 IWINFO_OPMODE_MONITOR, /* monitor */ 714 IWINFO_OPMODE_MESHPOINT, /* mesh point */ 715 IWINFO_OPMODE_P2P_CLIENT, /* P2P-client */ 716 IWINFO_OPMODE_P2P_GO, /* P2P-GO */ 717 }; 718 719 if (tb[NL80211_ATTR_IFTYPE]) 720 *mode = ifmodes[nla_get_u32(tb[NL80211_ATTR_IFTYPE])]; 721 722 return NL_SKIP; 723 } 724 725 726 static int nl80211_get_mode(const char *ifname, int *buf) 727 { 728 char *res; 729 730 *buf = IWINFO_OPMODE_UNKNOWN; 731 732 res = nl80211_phy2ifname(ifname); 733 734 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0, 735 nl80211_get_mode_cb, buf); 736 737 return (*buf == IWINFO_OPMODE_UNKNOWN) ? -1 : 0; 738 } 739 740 static int __nl80211_hostapd_query(const char *ifname, ...) 741 { 742 va_list ap, ap_cur; 743 char *phy, *search, *dest, *key, *val, buf[128]; 744 int len, mode, found = 0, match = 1; 745 FILE *fp; 746 747 if (nl80211_get_mode(ifname, &mode)) 748 return 0; 749 750 if (mode != IWINFO_OPMODE_MASTER && mode != IWINFO_OPMODE_AP_VLAN) 751 return 0; 752 753 phy = nl80211_ifname2phy(ifname); 754 755 if (!phy) 756 return 0; 757 758 snprintf(buf, sizeof(buf), "/var/run/hostapd-%s.conf", phy); 759 fp = fopen(buf, "r"); 760 761 if (!fp) 762 return 0; 763 764 va_start(ap, ifname); 765 766 /* clear all destination buffers */ 767 va_copy(ap_cur, ap); 768 769 while ((search = va_arg(ap_cur, char *)) != NULL) 770 { 771 dest = va_arg(ap_cur, char *); 772 len = va_arg(ap_cur, int); 773 774 memset(dest, 0, len); 775 } 776 777 va_end(ap_cur); 778 779 /* iterate applicable lines and copy found values into dest buffers */ 780 while (fgets(buf, sizeof(buf), fp)) 781 { 782 key = strtok(buf, " =\t\n"); 783 val = strtok(NULL, "\n"); 784 785 if (!key || !val || !*key || *key == '#') 786 continue; 787 788 if (!strcmp(key, "interface") || !strcmp(key, "bss")) 789 match = !strcmp(ifname, val); 790 791 if (!match) 792 continue; 793 794 va_copy(ap_cur, ap); 795 796 while ((search = va_arg(ap_cur, char *)) != NULL) 797 { 798 dest = va_arg(ap_cur, char *); 799 len = va_arg(ap_cur, int); 800 801 if (!strcmp(search, key)) 802 { 803 strncpy(dest, val, len - 1); 804 found++; 805 break; 806 } 807 } 808 809 va_end(ap_cur); 810 } 811 812 fclose(fp); 813 814 va_end(ap); 815 816 return found; 817 } 818 819 #define nl80211_hostapd_query(ifname, ...) \ 820 __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL) 821 822 823 static inline int nl80211_wpactl_recv(int sock, char *buf, int blen) 824 { 825 fd_set rfds; 826 struct timeval tv = { 0, 256000 }; 827 828 FD_ZERO(&rfds); 829 FD_SET(sock, &rfds); 830 831 memset(buf, 0, blen); 832 833 if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0) 834 return -1; 835 836 if (!FD_ISSET(sock, &rfds)) 837 return -1; 838 839 return recv(sock, buf, blen - 1, 0); 840 } 841 842 static int nl80211_wpactl_connect(const char *ifname, struct sockaddr_un *local) 843 { 844 struct sockaddr_un remote = { 0 }; 845 size_t remote_length, local_length; 846 847 int sock = socket(PF_UNIX, SOCK_DGRAM, 0); 848 if (sock < 0) 849 return sock; 850 851 remote.sun_family = AF_UNIX; 852 remote_length = sizeof(remote.sun_family) + 853 sprintf(remote.sun_path, "/var/run/wpa_supplicant-%s/%s", 854 ifname, ifname); 855 856 if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0) 857 { 858 close(sock); 859 return -1; 860 } 861 862 if (connect(sock, (struct sockaddr *)&remote, remote_length)) 863 { 864 remote_length = sizeof(remote.sun_family) + 865 sprintf(remote.sun_path, "/var/run/wpa_supplicant/%s", ifname); 866 867 if (connect(sock, (struct sockaddr *)&remote, remote_length)) 868 { 869 close(sock); 870 return -1; 871 } 872 } 873 874 local->sun_family = AF_UNIX; 875 local_length = sizeof(local->sun_family) + 876 sprintf(local->sun_path, "/var/run/iwinfo-%s-%d", ifname, getpid()); 877 878 if (bind(sock, (struct sockaddr *)local, local_length) < 0) 879 { 880 close(sock); 881 return -1; 882 } 883 884 return sock; 885 } 886 887 static int __nl80211_wpactl_query(const char *ifname, ...) 888 { 889 va_list ap, ap_cur; 890 struct sockaddr_un local = { 0 }; 891 int len, mode, found = 0, sock = -1; 892 char *search, *dest, *key, *val, *line, *pos, buf[512]; 893 894 if (nl80211_get_mode(ifname, &mode)) 895 return 0; 896 897 if (mode != IWINFO_OPMODE_CLIENT && 898 mode != IWINFO_OPMODE_ADHOC && 899 mode != IWINFO_OPMODE_MESHPOINT) 900 return 0; 901 902 sock = nl80211_wpactl_connect(ifname, &local); 903 904 if (sock < 0) 905 return 0; 906 907 va_start(ap, ifname); 908 909 /* clear all destination buffers */ 910 va_copy(ap_cur, ap); 911 912 while ((search = va_arg(ap_cur, char *)) != NULL) 913 { 914 dest = va_arg(ap_cur, char *); 915 len = va_arg(ap_cur, int); 916 917 memset(dest, 0, len); 918 } 919 920 va_end(ap_cur); 921 922 send(sock, "STATUS", 6, 0); 923 924 while (true) 925 { 926 if (nl80211_wpactl_recv(sock, buf, sizeof(buf)) <= 0) 927 break; 928 929 if (buf[0] == '<') 930 continue; 931 932 for (line = strtok_r(buf, "\n", &pos); 933 line != NULL; 934 line = strtok_r(NULL, "\n", &pos)) 935 { 936 key = strtok(line, "="); 937 val = strtok(NULL, "\n"); 938 939 if (!key || !val) 940 continue; 941 942 va_copy(ap_cur, ap); 943 944 while ((search = va_arg(ap_cur, char *)) != NULL) 945 { 946 dest = va_arg(ap_cur, char *); 947 len = va_arg(ap_cur, int); 948 949 if (!strcmp(search, key)) 950 { 951 strncpy(dest, val, len - 1); 952 found++; 953 break; 954 } 955 } 956 957 va_end(ap_cur); 958 } 959 960 break; 961 } 962 963 va_end(ap); 964 965 close(sock); 966 unlink(local.sun_path); 967 968 return found; 969 } 970 971 #define nl80211_wpactl_query(ifname, ...) \ 972 __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL) 973 974 975 static char * nl80211_ifadd(const char *ifname) 976 { 977 char path[PATH_MAX]; 978 static char nif[IFNAMSIZ] = { 0 }; 979 struct nl80211_msg_conveyor *req; 980 FILE *sysfs; 981 982 req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0); 983 if (req) 984 { 985 snprintf(nif, sizeof(nif), "tmp.%s", ifname); 986 987 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif); 988 NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION); 989 990 nl80211_send(req, NULL, NULL); 991 992 snprintf(path, sizeof(path) - 1, 993 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif); 994 995 if ((sysfs = fopen(path, "w")) != NULL) 996 { 997 fwrite("\n", 1, 2, sysfs); 998 fclose(sysfs); 999 } 1000 1001 return nif; 1002 1003 nla_put_failure: 1004 nl80211_free(req); 1005 } 1006 1007 return NULL; 1008 } 1009 1010 static void nl80211_ifdel(const char *ifname) 1011 { 1012 struct nl80211_msg_conveyor *req; 1013 int err; 1014 1015 req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0); 1016 if (req) 1017 { 1018 NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname); 1019 1020 nl80211_send(req, NULL, NULL); 1021 return; 1022 1023 nla_put_failure: 1024 nl80211_free(req); 1025 } 1026 } 1027 1028 static void nl80211_hostapd_hup(const char *ifname) 1029 { 1030 int fd, pid = 0; 1031 char buf[32]; 1032 char *phy = nl80211_ifname2phy(ifname); 1033 1034 if (phy) 1035 { 1036 snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy); 1037 if ((fd = open(buf, O_RDONLY)) >= 0) 1038 { 1039 if (read(fd, buf, sizeof(buf)) > 0) 1040 pid = atoi(buf); 1041 1042 close(fd); 1043 } 1044 1045 if (pid > 0) 1046 kill(pid, 1); 1047 } 1048 } 1049 1050 1051 static int nl80211_probe(const char *ifname) 1052 { 1053 return !!nl80211_ifname2phy(ifname); 1054 } 1055 1056 struct nl80211_ssid_bssid { 1057 unsigned char *ssid; 1058 unsigned char bssid[7]; 1059 }; 1060 1061 static int nl80211_get_macaddr_cb(struct nl_msg *msg, void *arg) 1062 { 1063 struct nl80211_ssid_bssid *sb = arg; 1064 struct nlattr **tb = nl80211_parse(msg); 1065 1066 if (tb[NL80211_ATTR_MAC]) { 1067 sb->bssid[0] = 1; 1068 memcpy(sb->bssid + 1, nla_data(tb[NL80211_ATTR_MAC]), 1069 sizeof(sb->bssid) - 1); 1070 } 1071 1072 return NL_SKIP; 1073 } 1074 1075 static int nl80211_get_ssid_bssid_cb(struct nl_msg *msg, void *arg) 1076 { 1077 int ielen; 1078 unsigned char *ie; 1079 struct nl80211_ssid_bssid *sb = arg; 1080 struct nlattr **tb = nl80211_parse(msg); 1081 struct nlattr *bss[NL80211_BSS_MAX + 1]; 1082 1083 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 1084 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 }, 1085 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 1086 }; 1087 1088 if (!tb[NL80211_ATTR_BSS] || 1089 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 1090 bss_policy) || 1091 !bss[NL80211_BSS_BSSID] || 1092 !bss[NL80211_BSS_STATUS] || 1093 !bss[NL80211_BSS_INFORMATION_ELEMENTS]) 1094 { 1095 return NL_SKIP; 1096 } 1097 1098 switch (nla_get_u32(bss[NL80211_BSS_STATUS])) 1099 { 1100 case NL80211_BSS_STATUS_ASSOCIATED: 1101 case NL80211_BSS_STATUS_AUTHENTICATED: 1102 case NL80211_BSS_STATUS_IBSS_JOINED: 1103 1104 if (sb->ssid) 1105 { 1106 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 1107 ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 1108 1109 while (ielen >= 2 && ielen >= ie[1]) 1110 { 1111 if (ie[0] == 0) 1112 { 1113 memcpy(sb->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE)); 1114 return NL_SKIP; 1115 } 1116 1117 ielen -= ie[1] + 2; 1118 ie += ie[1] + 2; 1119 } 1120 } 1121 else 1122 { 1123 sb->bssid[0] = 1; 1124 memcpy(sb->bssid + 1, nla_data(bss[NL80211_BSS_BSSID]), 6); 1125 return NL_SKIP; 1126 } 1127 1128 default: 1129 return NL_SKIP; 1130 } 1131 } 1132 1133 static int nl80211_get_ssid(const char *ifname, char *buf) 1134 { 1135 char *res; 1136 struct nl80211_ssid_bssid sb = { .ssid = (unsigned char *)buf }; 1137 1138 /* try to find ssid from scan dump results */ 1139 res = nl80211_phy2ifname(ifname); 1140 sb.ssid[0] = 0; 1141 1142 nl80211_request(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP, 1143 nl80211_get_ssid_bssid_cb, &sb); 1144 1145 /* failed, try to find from hostapd info */ 1146 if (sb.ssid[0] == 0) 1147 nl80211_hostapd_query(ifname, "ssid", sb.ssid, 1148 IWINFO_ESSID_MAX_SIZE + 1); 1149 1150 /* failed, try to obtain Mesh ID */ 1151 if (sb.ssid[0] == 0) 1152 iwinfo_ubus_query(res ? res : ifname, "mesh_id", 1153 sb.ssid, IWINFO_ESSID_MAX_SIZE + 1); 1154 1155 return (sb.ssid[0] == 0) ? -1 : 0; 1156 } 1157 1158 static int nl80211_get_bssid(const char *ifname, char *buf) 1159 { 1160 char *res, bssid[sizeof("FF:FF:FF:FF:FF:FF\0")]; 1161 struct nl80211_ssid_bssid sb = { }; 1162 1163 res = nl80211_phy2ifname(ifname); 1164 1165 /* try to obtain mac address via NL80211_CMD_GET_INTERFACE */ 1166 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0, 1167 nl80211_get_macaddr_cb, &sb); 1168 1169 /* failed, try to find bssid from scan dump results */ 1170 if (sb.bssid[0] == 0) 1171 nl80211_request(res ? res : ifname, 1172 NL80211_CMD_GET_SCAN, NLM_F_DUMP, 1173 nl80211_get_ssid_bssid_cb, &sb); 1174 1175 /* failed, try to find mac from hostapd info */ 1176 if ((sb.bssid[0] == 0) && 1177 nl80211_hostapd_query(ifname, "bssid", bssid, sizeof(bssid))) 1178 { 1179 sb.bssid[0] = 1; 1180 sb.bssid[1] = strtol(&bssid[0], NULL, 16); 1181 sb.bssid[2] = strtol(&bssid[3], NULL, 16); 1182 sb.bssid[3] = strtol(&bssid[6], NULL, 16); 1183 sb.bssid[4] = strtol(&bssid[9], NULL, 16); 1184 sb.bssid[5] = strtol(&bssid[12], NULL, 16); 1185 sb.bssid[6] = strtol(&bssid[15], NULL, 16); 1186 } 1187 1188 if (sb.bssid[0]) 1189 { 1190 sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", 1191 sb.bssid[1], sb.bssid[2], sb.bssid[3], 1192 sb.bssid[4], sb.bssid[5], sb.bssid[6]); 1193 1194 return 0; 1195 } 1196 1197 return -1; 1198 } 1199 1200 1201 static int nl80211_get_frequency_scan_cb(struct nl_msg *msg, void *arg) 1202 { 1203 int *freq = arg; 1204 struct nlattr **attr = nl80211_parse(msg); 1205 struct nlattr *binfo[NL80211_BSS_MAX + 1]; 1206 1207 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 1208 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 1209 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 1210 }; 1211 1212 if (attr[NL80211_ATTR_BSS] && 1213 !nla_parse_nested(binfo, NL80211_BSS_MAX, 1214 attr[NL80211_ATTR_BSS], bss_policy)) 1215 { 1216 if (binfo[NL80211_BSS_STATUS] && binfo[NL80211_BSS_FREQUENCY]) 1217 *freq = nla_get_u32(binfo[NL80211_BSS_FREQUENCY]); 1218 } 1219 1220 return NL_SKIP; 1221 } 1222 1223 static int nl80211_get_frequency_info_cb(struct nl_msg *msg, void *arg) 1224 { 1225 int *freq = arg; 1226 struct nlattr **tb = nl80211_parse(msg); 1227 1228 if (tb[NL80211_ATTR_WIPHY_FREQ]) 1229 *freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 1230 1231 return NL_SKIP; 1232 } 1233 1234 static int nl80211_get_frequency(const char *ifname, int *buf) 1235 { 1236 char *res, channel[4], hwmode[3]; 1237 1238 /* try to find frequency from interface info */ 1239 res = nl80211_phy2ifname(ifname); 1240 *buf = 0; 1241 1242 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0, 1243 nl80211_get_frequency_info_cb, buf); 1244 1245 /* failed, try to find frequency from hostapd info */ 1246 if ((*buf == 0) && 1247 nl80211_hostapd_query(ifname, "hw_mode", hwmode, sizeof(hwmode), 1248 "channel", channel, sizeof(channel)) == 2) 1249 { 1250 *buf = nl80211_channel2freq(atoi(channel), hwmode); 1251 } 1252 1253 /* failed, try to find frequency from scan results */ 1254 if (*buf == 0) 1255 { 1256 res = nl80211_phy2ifname(ifname); 1257 1258 nl80211_request(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP, 1259 nl80211_get_frequency_scan_cb, buf); 1260 } 1261 1262 return (*buf == 0) ? -1 : 0; 1263 } 1264 1265 static int nl80211_get_center_freq1_cb(struct nl_msg *msg, void *arg) 1266 { 1267 int *freq = arg; 1268 struct nlattr **tb = nl80211_parse(msg); 1269 1270 if (tb[NL80211_ATTR_CENTER_FREQ1]) 1271 *freq = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]); 1272 1273 return NL_SKIP; 1274 } 1275 1276 static int nl80211_get_center_freq1(const char *ifname, int *buf) 1277 { 1278 char *res; 1279 1280 /* try to find frequency from interface info */ 1281 res = nl80211_phy2ifname(ifname); 1282 *buf = 0; 1283 1284 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0, 1285 nl80211_get_center_freq1_cb, buf); 1286 1287 return (*buf == 0) ? -1 : 0; 1288 } 1289 1290 static int nl80211_get_center_freq2_cb(struct nl_msg *msg, void *arg) 1291 { 1292 int *freq = arg; 1293 struct nlattr **tb = nl80211_parse(msg); 1294 1295 if (tb[NL80211_ATTR_CENTER_FREQ2]) 1296 *freq = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]); 1297 1298 return NL_SKIP; 1299 } 1300 1301 static int nl80211_get_center_freq2(const char *ifname, int *buf) 1302 { 1303 char *res; 1304 1305 /* try to find frequency from interface info */ 1306 res = nl80211_phy2ifname(ifname); 1307 *buf = 0; 1308 1309 nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0, 1310 nl80211_get_center_freq2_cb, buf); 1311 1312 return (*buf == 0) ? -1 : 0; 1313 } 1314 1315 static int nl80211_get_channel(const char *ifname, int *buf) 1316 { 1317 if (!nl80211_get_frequency(ifname, buf)) 1318 { 1319 *buf = nl80211_freq2channel(*buf); 1320 return 0; 1321 } 1322 1323 return -1; 1324 } 1325 1326 static int nl80211_get_center_chan1(const char *ifname, int *buf) 1327 { 1328 if (!nl80211_get_center_freq1(ifname, buf)) 1329 { 1330 *buf = nl80211_freq2channel(*buf); 1331 return 0; 1332 } 1333 1334 return -1; 1335 } 1336 1337 static int nl80211_get_center_chan2(const char *ifname, int *buf) 1338 { 1339 if (!nl80211_get_center_freq2(ifname, buf)) 1340 { 1341 *buf = nl80211_freq2channel(*buf); 1342 return 0; 1343 } 1344 1345 return -1; 1346 } 1347 1348 static int nl80211_get_txpower_cb(struct nl_msg *msg, void *arg) 1349 { 1350 int *buf = arg; 1351 struct nlattr **tb = nl80211_parse(msg); 1352 1353 if (tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL]) 1354 *buf = iwinfo_mbm2dbm(nla_get_u32(tb[NL80211_ATTR_WIPHY_TX_POWER_LEVEL])); 1355 1356 return NL_SKIP; 1357 } 1358 1359 static int nl80211_get_txpower(const char *ifname, int *buf) 1360 { 1361 char *res; 1362 1363 res = nl80211_phy2ifname(ifname); 1364 *buf = 0; 1365 1366 if (nl80211_request(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0, 1367 nl80211_get_txpower_cb, buf)) 1368 return -1; 1369 1370 return 0; 1371 } 1372 1373 1374 static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg) 1375 { 1376 int8_t dbm; 1377 int16_t mbit; 1378 struct nl80211_rssi_rate *rr = arg; 1379 struct nlattr **attr = nl80211_parse(msg); 1380 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 1381 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 1382 1383 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 1384 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 1385 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 1386 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 1387 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 1388 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 1389 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 1390 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED }, 1391 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 }, 1392 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 }, 1393 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 }, 1394 }; 1395 1396 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 1397 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 1398 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 1399 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 1400 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 1401 }; 1402 1403 if (attr[NL80211_ATTR_STA_INFO]) 1404 { 1405 if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 1406 attr[NL80211_ATTR_STA_INFO], stats_policy)) 1407 { 1408 if (sinfo[NL80211_STA_INFO_SIGNAL]) 1409 { 1410 dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 1411 rr->rssi = (rr->rssi * rr->rssi_samples + dbm) / (rr->rssi_samples + 1); 1412 rr->rssi_samples++; 1413 } 1414 1415 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) 1416 { 1417 if (!nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 1418 sinfo[NL80211_STA_INFO_TX_BITRATE], 1419 rate_policy)) 1420 { 1421 if (rinfo[NL80211_RATE_INFO_BITRATE]) 1422 { 1423 mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]); 1424 rr->rate = (rr->rate * rr->rate_samples + mbit) / (rr->rate_samples + 1); 1425 rr->rate_samples++; 1426 } 1427 } 1428 } 1429 } 1430 } 1431 1432 return NL_SKIP; 1433 } 1434 1435 static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r) 1436 { 1437 DIR *d; 1438 struct dirent *de; 1439 1440 memset(r, 0, sizeof(*r)); 1441 1442 if ((d = opendir("/sys/class/net")) != NULL) 1443 { 1444 while ((de = readdir(d)) != NULL) 1445 { 1446 if (!strncmp(de->d_name, ifname, strlen(ifname)) && 1447 (!de->d_name[strlen(ifname)] || 1448 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4))) 1449 { 1450 nl80211_request(de->d_name, NL80211_CMD_GET_STATION, 1451 NLM_F_DUMP, nl80211_fill_signal_cb, r); 1452 } 1453 } 1454 1455 closedir(d); 1456 } 1457 } 1458 1459 static int nl80211_get_bitrate(const char *ifname, int *buf) 1460 { 1461 struct nl80211_rssi_rate rr; 1462 1463 nl80211_fill_signal(ifname, &rr); 1464 1465 if (rr.rate_samples) 1466 { 1467 *buf = (rr.rate * 100); 1468 return 0; 1469 } 1470 1471 return -1; 1472 } 1473 1474 static int nl80211_get_signal(const char *ifname, int *buf) 1475 { 1476 struct nl80211_rssi_rate rr; 1477 1478 nl80211_fill_signal(ifname, &rr); 1479 1480 if (rr.rssi_samples) 1481 { 1482 *buf = rr.rssi; 1483 return 0; 1484 } 1485 1486 return -1; 1487 } 1488 1489 static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg) 1490 { 1491 int8_t *noise = arg; 1492 struct nlattr **tb = nl80211_parse(msg); 1493 struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1]; 1494 1495 static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = { 1496 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1497 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1498 }; 1499 1500 if (!tb[NL80211_ATTR_SURVEY_INFO]) 1501 return NL_SKIP; 1502 1503 if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX, 1504 tb[NL80211_ATTR_SURVEY_INFO], sp)) 1505 return NL_SKIP; 1506 1507 if (!si[NL80211_SURVEY_INFO_NOISE]) 1508 return NL_SKIP; 1509 1510 if (!*noise || si[NL80211_SURVEY_INFO_IN_USE]) 1511 *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]); 1512 1513 return NL_SKIP; 1514 } 1515 1516 1517 static int nl80211_get_noise(const char *ifname, int *buf) 1518 { 1519 int8_t noise = 0; 1520 1521 if (nl80211_request(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP, 1522 nl80211_get_noise_cb, &noise)) 1523 goto out; 1524 1525 *buf = noise; 1526 return 0; 1527 1528 out: 1529 *buf = 0; 1530 return -1; 1531 } 1532 1533 static int nl80211_get_quality(const char *ifname, int *buf) 1534 { 1535 int signal; 1536 1537 if (!nl80211_get_signal(ifname, &signal)) 1538 { 1539 /* A positive signal level is usually just a quality 1540 * value, pass through as-is */ 1541 if (signal >= 0) 1542 { 1543 *buf = signal; 1544 } 1545 1546 /* The cfg80211 wext compat layer assumes a signal range 1547 * of -110 dBm to -40 dBm, the quality value is derived 1548 * by adding 110 to the signal level */ 1549 else 1550 { 1551 if (signal < -110) 1552 signal = -110; 1553 else if (signal > -40) 1554 signal = -40; 1555 1556 *buf = (signal + 110); 1557 } 1558 1559 return 0; 1560 } 1561 1562 return -1; 1563 } 1564 1565 static int nl80211_get_quality_max(const char *ifname, int *buf) 1566 { 1567 /* The cfg80211 wext compat layer assumes a maximum 1568 * quality of 70 */ 1569 *buf = 70; 1570 1571 return 0; 1572 } 1573 1574 static int nl80211_check_wepkey(const char *key) 1575 { 1576 if (key && *key) 1577 { 1578 switch (strlen(key)) 1579 { 1580 case 5: 1581 case 10: 1582 return IWINFO_CIPHER_WEP40; 1583 1584 case 13: 1585 case 26: 1586 return IWINFO_CIPHER_WEP104; 1587 } 1588 } 1589 1590 return 0; 1591 } 1592 1593 static struct { 1594 const char *match; 1595 int version; 1596 int suite; 1597 } wpa_key_mgmt_strings[] = { 1598 { "IEEE 802.1X/EAP", 0, IWINFO_KMGMT_8021x }, 1599 { "EAP-SUITE-B-192", 4, IWINFO_KMGMT_8021x }, 1600 { "EAP-SUITE-B", 4, IWINFO_KMGMT_8021x }, 1601 { "EAP-SHA256", 0, IWINFO_KMGMT_8021x }, 1602 { "PSK-SHA256", 0, IWINFO_KMGMT_PSK }, 1603 { "NONE", 0, IWINFO_KMGMT_NONE }, 1604 { "None", 0, IWINFO_KMGMT_NONE }, 1605 { "PSK", 0, IWINFO_KMGMT_PSK }, 1606 { "EAP", 0, IWINFO_KMGMT_8021x }, 1607 { "SAE", 4, IWINFO_KMGMT_SAE }, 1608 { "OWE", 4, IWINFO_KMGMT_OWE } 1609 }; 1610 1611 static void parse_wpa_suites(const char *str, int defversion, 1612 uint8_t *versions, uint8_t *suites) 1613 { 1614 size_t l; 1615 int i, version; 1616 const char *p, *q, *m, *sep = " \t\n,-+/"; 1617 1618 for (p = str; *p; ) 1619 { 1620 q = p; 1621 1622 for (i = 0; i < ARRAY_SIZE(wpa_key_mgmt_strings); i++) 1623 { 1624 m = wpa_key_mgmt_strings[i].match; 1625 l = strlen(m); 1626 1627 if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l]))) 1628 { 1629 if (wpa_key_mgmt_strings[i].version != 0) 1630 version = wpa_key_mgmt_strings[i].version; 1631 else 1632 version = defversion; 1633 1634 *versions |= version; 1635 *suites |= wpa_key_mgmt_strings[i].suite; 1636 1637 q += l; 1638 break; 1639 } 1640 } 1641 1642 if (q == p) 1643 q += strcspn(q, sep); 1644 1645 p = q + strspn(q, sep); 1646 } 1647 } 1648 1649 static struct { 1650 const char *match; 1651 int cipher; 1652 } wpa_cipher_strings[] = { 1653 { "WEP-104", IWINFO_CIPHER_WEP104 }, 1654 { "WEP-40", IWINFO_CIPHER_WEP40 }, 1655 { "NONE", IWINFO_CIPHER_NONE }, 1656 { "TKIP", IWINFO_CIPHER_TKIP }, 1657 { "CCMP", IWINFO_CIPHER_CCMP }, 1658 { "GCMP", IWINFO_CIPHER_GCMP } 1659 }; 1660 1661 static void parse_wpa_ciphers(const char *str, uint16_t *ciphers) 1662 { 1663 int i; 1664 size_t l; 1665 const char *m, *p, *q, *sep = " \t\n,-+/"; 1666 1667 for (p = str; *p; ) 1668 { 1669 q = p; 1670 1671 for (i = 0; i < ARRAY_SIZE(wpa_cipher_strings); i++) 1672 { 1673 m = wpa_cipher_strings[i].match; 1674 l = strlen(m); 1675 1676 if (!strncmp(q, m, l) && (!q[l] || strchr(sep, q[l]))) 1677 { 1678 *ciphers |= wpa_cipher_strings[i].cipher; 1679 1680 q += l; 1681 break; 1682 } 1683 } 1684 1685 if (q == p) 1686 q += strcspn(q, sep); 1687 1688 p = q + strspn(q, sep); 1689 } 1690 } 1691 1692 static int nl80211_get_encryption(const char *ifname, char *buf) 1693 { 1694 char *p; 1695 int opmode; 1696 uint8_t wpa_version = 0; 1697 char wpa[2], wpa_key_mgmt[64], wpa_pairwise[16], wpa_groupwise[16]; 1698 char auth_algs[2], wep_key0[27], wep_key1[27], wep_key2[27], wep_key3[27]; 1699 char mode[16]; 1700 1701 struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf; 1702 1703 /* WPA supplicant */ 1704 if (nl80211_wpactl_query(ifname, 1705 "pairwise_cipher", wpa_pairwise, sizeof(wpa_pairwise), 1706 "group_cipher", wpa_groupwise, sizeof(wpa_groupwise), 1707 "key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt), 1708 "mode", mode, sizeof(mode))) 1709 { 1710 /* WEP or Open */ 1711 if (!strcmp(wpa_key_mgmt, "NONE")) 1712 { 1713 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers); 1714 parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers); 1715 1716 if (c->pair_ciphers != 0 && c->pair_ciphers != IWINFO_CIPHER_NONE) { 1717 c->enabled = 1; 1718 c->auth_suites = IWINFO_KMGMT_NONE; 1719 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED; 1720 } 1721 else { 1722 c->pair_ciphers = 0; 1723 c->group_ciphers = 0; 1724 } 1725 } 1726 1727 /* MESH with SAE */ 1728 else if (!strcmp(mode, "mesh") && !strcmp(wpa_key_mgmt, "UNKNOWN")) 1729 { 1730 c->enabled = 1; 1731 c->wpa_version = 4; 1732 c->auth_suites = IWINFO_KMGMT_SAE; 1733 c->pair_ciphers = IWINFO_CIPHER_CCMP; 1734 c->group_ciphers = IWINFO_CIPHER_CCMP; 1735 } 1736 1737 /* WPA */ 1738 else 1739 { 1740 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers); 1741 parse_wpa_ciphers(wpa_groupwise, &c->group_ciphers); 1742 1743 p = wpa_key_mgmt; 1744 1745 if (!strncmp(p, "WPA2-", 5) || !strncmp(p, "WPA2/", 5)) 1746 { 1747 p += 5; 1748 wpa_version = 2; 1749 } 1750 else if (!strncmp(p, "WPA-", 4)) 1751 { 1752 p += 4; 1753 wpa_version = 1; 1754 } 1755 1756 parse_wpa_suites(p, wpa_version, &c->wpa_version, &c->auth_suites); 1757 1758 c->enabled = !!(c->wpa_version && c->auth_suites); 1759 } 1760 1761 return 0; 1762 } 1763 1764 /* Hostapd */ 1765 else if (nl80211_hostapd_query(ifname, 1766 "wpa", wpa, sizeof(wpa), 1767 "wpa_key_mgmt", wpa_key_mgmt, sizeof(wpa_key_mgmt), 1768 "wpa_pairwise", wpa_pairwise, sizeof(wpa_pairwise), 1769 "auth_algs", auth_algs, sizeof(auth_algs), 1770 "wep_key0", wep_key0, sizeof(wep_key0), 1771 "wep_key1", wep_key1, sizeof(wep_key1), 1772 "wep_key2", wep_key2, sizeof(wep_key2), 1773 "wep_key3", wep_key3, sizeof(wep_key3))) 1774 { 1775 c->wpa_version = 0; 1776 1777 if (wpa_key_mgmt[0]) 1778 { 1779 for (p = strtok(wpa_key_mgmt, " \t"); p != NULL; p = strtok(NULL, " \t")) 1780 { 1781 if (!strncmp(p, "WPA-", 4)) 1782 p += 4; 1783 1784 parse_wpa_suites(p, atoi(wpa), &c->wpa_version, &c->auth_suites); 1785 } 1786 1787 c->enabled = c->wpa_version ? 1 : 0; 1788 } 1789 1790 if (wpa_pairwise[0]) 1791 parse_wpa_ciphers(wpa_pairwise, &c->pair_ciphers); 1792 1793 if (auth_algs[0]) 1794 { 1795 switch (atoi(auth_algs)) 1796 { 1797 case 1: 1798 c->auth_algs |= IWINFO_AUTH_OPEN; 1799 break; 1800 1801 case 2: 1802 c->auth_algs |= IWINFO_AUTH_SHARED; 1803 break; 1804 1805 case 3: 1806 c->auth_algs |= IWINFO_AUTH_OPEN; 1807 c->auth_algs |= IWINFO_AUTH_SHARED; 1808 break; 1809 } 1810 1811 c->pair_ciphers |= nl80211_check_wepkey(wep_key0); 1812 c->pair_ciphers |= nl80211_check_wepkey(wep_key1); 1813 c->pair_ciphers |= nl80211_check_wepkey(wep_key2); 1814 c->pair_ciphers |= nl80211_check_wepkey(wep_key3); 1815 1816 c->enabled = (c->auth_algs && c->pair_ciphers) ? 1 : 0; 1817 } 1818 1819 c->group_ciphers = c->pair_ciphers; 1820 1821 return 0; 1822 } 1823 1824 /* Ad-Hoc or Mesh interfaces without wpa_supplicant are open */ 1825 else if (!nl80211_get_mode(ifname, &opmode) && 1826 (opmode == IWINFO_OPMODE_ADHOC || 1827 opmode == IWINFO_OPMODE_MESHPOINT)) 1828 { 1829 c->enabled = 0; 1830 1831 return 0; 1832 } 1833 1834 1835 return -1; 1836 } 1837 1838 static int nl80211_get_phyname(const char *ifname, char *buf) 1839 { 1840 const char *name; 1841 1842 name = nl80211_ifname2phy(ifname); 1843 1844 if (name) 1845 { 1846 strcpy(buf, name); 1847 return 0; 1848 } 1849 else if ((name = nl80211_phy2ifname(ifname)) != NULL) 1850 { 1851 name = nl80211_ifname2phy(name); 1852 1853 if (name) 1854 { 1855 strcpy(buf, ifname); 1856 return 0; 1857 } 1858 } 1859 1860 return -1; 1861 } 1862 1863 1864 static void nl80211_parse_rateinfo(struct nlattr **ri, 1865 struct iwinfo_rate_entry *re) 1866 { 1867 if (ri[NL80211_RATE_INFO_BITRATE32]) 1868 re->rate = nla_get_u32(ri[NL80211_RATE_INFO_BITRATE32]) * 100; 1869 else if (ri[NL80211_RATE_INFO_BITRATE]) 1870 re->rate = nla_get_u16(ri[NL80211_RATE_INFO_BITRATE]) * 100; 1871 1872 if (ri[NL80211_RATE_INFO_VHT_MCS]) 1873 { 1874 re->is_vht = 1; 1875 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_VHT_MCS]); 1876 1877 if (ri[NL80211_RATE_INFO_VHT_NSS]) 1878 re->nss = nla_get_u8(ri[NL80211_RATE_INFO_VHT_NSS]); 1879 } 1880 else if (ri[NL80211_RATE_INFO_MCS]) 1881 { 1882 re->is_ht = 1; 1883 re->mcs = nla_get_u8(ri[NL80211_RATE_INFO_MCS]); 1884 } 1885 1886 if (ri[NL80211_RATE_INFO_5_MHZ_WIDTH]) 1887 re->mhz = 5; 1888 else if (ri[NL80211_RATE_INFO_10_MHZ_WIDTH]) 1889 re->mhz = 10; 1890 else if (ri[NL80211_RATE_INFO_40_MHZ_WIDTH]) 1891 re->mhz = 40; 1892 else if (ri[NL80211_RATE_INFO_80_MHZ_WIDTH]) 1893 re->mhz = 80; 1894 else if (ri[NL80211_RATE_INFO_80P80_MHZ_WIDTH] || 1895 ri[NL80211_RATE_INFO_160_MHZ_WIDTH]) 1896 re->mhz = 160; 1897 else 1898 re->mhz = 20; 1899 1900 if (ri[NL80211_RATE_INFO_SHORT_GI]) 1901 re->is_short_gi = 1; 1902 1903 re->is_40mhz = (re->mhz == 40); 1904 } 1905 1906 static int nl80211_get_survey_cb(struct nl_msg *msg, void *arg) 1907 { 1908 struct nl80211_array_buf *arr = arg; 1909 struct iwinfo_survey_entry *e = arr->buf; 1910 struct nlattr **attr = nl80211_parse(msg); 1911 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 1912 int rc; 1913 1914 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 1915 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 1916 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 1917 [NL80211_SURVEY_INFO_TIME] = { .type = NLA_U64 }, 1918 [NL80211_SURVEY_INFO_TIME_BUSY] = { .type = NLA_U64 }, 1919 [NL80211_SURVEY_INFO_TIME_EXT_BUSY] = { .type = NLA_U64 }, 1920 [NL80211_SURVEY_INFO_TIME_RX] = { .type = NLA_U64 }, 1921 [NL80211_SURVEY_INFO_TIME_TX] = { .type = NLA_U64 }, 1922 }; 1923 1924 rc = nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 1925 attr[NL80211_ATTR_SURVEY_INFO], 1926 survey_policy); 1927 if (rc) 1928 return NL_SKIP; 1929 1930 /* advance to end of array */ 1931 e += arr->count; 1932 memset(e, 0, sizeof(*e)); 1933 1934 if (sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 1935 e->mhz = nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]); 1936 1937 if (sinfo[NL80211_SURVEY_INFO_NOISE]) 1938 e->noise = nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 1939 1940 if (sinfo[NL80211_SURVEY_INFO_TIME]) 1941 e->active_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME]); 1942 1943 if (sinfo[NL80211_SURVEY_INFO_TIME_BUSY]) 1944 e->busy_time = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_BUSY]); 1945 1946 if (sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY]) 1947 e->busy_time_ext = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_EXT_BUSY]); 1948 1949 if (sinfo[NL80211_SURVEY_INFO_TIME_RX]) 1950 e->rxtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_RX]); 1951 1952 if (sinfo[NL80211_SURVEY_INFO_TIME_TX]) 1953 e->txtime = nla_get_u64(sinfo[NL80211_SURVEY_INFO_TIME_TX]); 1954 1955 arr->count++; 1956 return NL_SKIP; 1957 } 1958 1959 1960 static void plink_state_to_str(char *dst, unsigned state) 1961 { 1962 switch (state) { 1963 case NL80211_PLINK_LISTEN: 1964 strcpy(dst, "LISTEN"); 1965 break; 1966 case NL80211_PLINK_OPN_SNT: 1967 strcpy(dst, "OPN_SNT"); 1968 break; 1969 case NL80211_PLINK_OPN_RCVD: 1970 strcpy(dst, "OPN_RCVD"); 1971 break; 1972 case NL80211_PLINK_CNF_RCVD: 1973 strcpy(dst, "CNF_RCVD"); 1974 break; 1975 case NL80211_PLINK_ESTAB: 1976 strcpy(dst, "ESTAB"); 1977 break; 1978 case NL80211_PLINK_HOLDING: 1979 strcpy(dst, "HOLDING"); 1980 break; 1981 case NL80211_PLINK_BLOCKED: 1982 strcpy(dst, "BLOCKED"); 1983 break; 1984 default: 1985 strcpy(dst, "UNKNOWN"); 1986 break; 1987 } 1988 } 1989 1990 static void power_mode_to_str(char *dst, struct nlattr *a) 1991 { 1992 enum nl80211_mesh_power_mode pm = nla_get_u32(a); 1993 1994 switch (pm) { 1995 case NL80211_MESH_POWER_ACTIVE: 1996 strcpy(dst, "ACTIVE"); 1997 break; 1998 case NL80211_MESH_POWER_LIGHT_SLEEP: 1999 strcpy(dst, "LIGHT SLEEP"); 2000 break; 2001 case NL80211_MESH_POWER_DEEP_SLEEP: 2002 strcpy(dst, "DEEP SLEEP"); 2003 break; 2004 default: 2005 strcpy(dst, "UNKNOWN"); 2006 break; 2007 } 2008 } 2009 2010 static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg) 2011 { 2012 struct nl80211_array_buf *arr = arg; 2013 struct iwinfo_assoclist_entry *e = arr->buf; 2014 struct nlattr **attr = nl80211_parse(msg); 2015 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 2016 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 2017 struct nl80211_sta_flag_update *sta_flags; 2018 2019 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { 2020 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, 2021 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, 2022 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, 2023 [NL80211_STA_INFO_RX_BITRATE] = { .type = NLA_NESTED }, 2024 [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED }, 2025 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 2026 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 }, 2027 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, 2028 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, 2029 [NL80211_STA_INFO_TX_RETRIES] = { .type = NLA_U32 }, 2030 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 }, 2031 [NL80211_STA_INFO_CONNECTED_TIME]= { .type = NLA_U32 }, 2032 [NL80211_STA_INFO_RX_DROP_MISC] = { .type = NLA_U64 }, 2033 [NL80211_STA_INFO_T_OFFSET] = { .type = NLA_U64 }, 2034 [NL80211_STA_INFO_STA_FLAGS] = 2035 { .minlen = sizeof(struct nl80211_sta_flag_update) }, 2036 [NL80211_STA_INFO_EXPECTED_THROUGHPUT] = { .type = NLA_U32 }, 2037 /* mesh */ 2038 [NL80211_STA_INFO_LLID] = { .type = NLA_U16 }, 2039 [NL80211_STA_INFO_PLID] = { .type = NLA_U16 }, 2040 [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 }, 2041 [NL80211_STA_INFO_LOCAL_PM] = { .type = NLA_U32 }, 2042 [NL80211_STA_INFO_PEER_PM] = { .type = NLA_U32 }, 2043 [NL80211_STA_INFO_NONPEER_PM] = { .type = NLA_U32 }, 2044 }; 2045 2046 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 2047 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 2048 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 2049 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 2050 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 2051 }; 2052 2053 /* advance to end of array */ 2054 e += arr->count; 2055 memset(e, 0, sizeof(*e)); 2056 2057 if (attr[NL80211_ATTR_MAC]) 2058 memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6); 2059 2060 if (attr[NL80211_ATTR_STA_INFO] && 2061 !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 2062 attr[NL80211_ATTR_STA_INFO], stats_policy)) 2063 { 2064 if (sinfo[NL80211_STA_INFO_SIGNAL]) 2065 e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 2066 2067 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG]) 2068 e->signal_avg = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]); 2069 2070 if (sinfo[NL80211_STA_INFO_INACTIVE_TIME]) 2071 e->inactive = nla_get_u32(sinfo[NL80211_STA_INFO_INACTIVE_TIME]); 2072 2073 if (sinfo[NL80211_STA_INFO_CONNECTED_TIME]) 2074 e->connected_time = nla_get_u32(sinfo[NL80211_STA_INFO_CONNECTED_TIME]); 2075 2076 if (sinfo[NL80211_STA_INFO_RX_PACKETS]) 2077 e->rx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS]); 2078 2079 if (sinfo[NL80211_STA_INFO_TX_PACKETS]) 2080 e->tx_packets = nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS]); 2081 2082 if (sinfo[NL80211_STA_INFO_RX_BITRATE] && 2083 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 2084 sinfo[NL80211_STA_INFO_RX_BITRATE], rate_policy)) 2085 nl80211_parse_rateinfo(rinfo, &e->rx_rate); 2086 2087 if (sinfo[NL80211_STA_INFO_TX_BITRATE] && 2088 !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 2089 sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy)) 2090 nl80211_parse_rateinfo(rinfo, &e->tx_rate); 2091 2092 if (sinfo[NL80211_STA_INFO_RX_BYTES]) 2093 e->rx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]); 2094 2095 if (sinfo[NL80211_STA_INFO_TX_BYTES]) 2096 e->tx_bytes = nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]); 2097 2098 if (sinfo[NL80211_STA_INFO_TX_RETRIES]) 2099 e->tx_retries = nla_get_u32(sinfo[NL80211_STA_INFO_TX_RETRIES]); 2100 2101 if (sinfo[NL80211_STA_INFO_TX_FAILED]) 2102 e->tx_failed = nla_get_u32(sinfo[NL80211_STA_INFO_TX_FAILED]); 2103 2104 if (sinfo[NL80211_STA_INFO_T_OFFSET]) 2105 e->t_offset = nla_get_u64(sinfo[NL80211_STA_INFO_T_OFFSET]); 2106 2107 if (sinfo[NL80211_STA_INFO_RX_DROP_MISC]) 2108 e->rx_drop_misc = nla_get_u64(sinfo[NL80211_STA_INFO_RX_DROP_MISC]); 2109 2110 if (sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT]) 2111 e->thr = nla_get_u32(sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT]); 2112 2113 /* mesh */ 2114 if (sinfo[NL80211_STA_INFO_LLID]) 2115 e->llid = nla_get_u16(sinfo[NL80211_STA_INFO_LLID]); 2116 2117 if (sinfo[NL80211_STA_INFO_PLID]) 2118 e->plid = nla_get_u16(sinfo[NL80211_STA_INFO_PLID]); 2119 2120 if (sinfo[NL80211_STA_INFO_PLINK_STATE]) 2121 plink_state_to_str(e->plink_state, 2122 nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE])); 2123 2124 if (sinfo[NL80211_STA_INFO_LOCAL_PM]) 2125 power_mode_to_str(e->local_ps, sinfo[NL80211_STA_INFO_LOCAL_PM]); 2126 if (sinfo[NL80211_STA_INFO_PEER_PM]) 2127 power_mode_to_str(e->peer_ps, sinfo[NL80211_STA_INFO_PEER_PM]); 2128 if (sinfo[NL80211_STA_INFO_NONPEER_PM]) 2129 power_mode_to_str(e->nonpeer_ps, sinfo[NL80211_STA_INFO_NONPEER_PM]); 2130 2131 /* Station flags */ 2132 if (sinfo[NL80211_STA_INFO_STA_FLAGS]) 2133 { 2134 sta_flags = (struct nl80211_sta_flag_update *) 2135 nla_data(sinfo[NL80211_STA_INFO_STA_FLAGS]); 2136 2137 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHORIZED) && 2138 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 2139 e->is_authorized = 1; 2140 2141 if (sta_flags->mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 2142 sta_flags->set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 2143 e->is_authenticated = 1; 2144 2145 if (sta_flags->mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) && 2146 sta_flags->set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 2147 e->is_preamble_short = 1; 2148 2149 if (sta_flags->mask & BIT(NL80211_STA_FLAG_WME) && 2150 sta_flags->set & BIT(NL80211_STA_FLAG_WME)) 2151 e->is_wme = 1; 2152 2153 if (sta_flags->mask & BIT(NL80211_STA_FLAG_MFP) && 2154 sta_flags->set & BIT(NL80211_STA_FLAG_MFP)) 2155 e->is_mfp = 1; 2156 2157 if (sta_flags->mask & BIT(NL80211_STA_FLAG_TDLS_PEER) && 2158 sta_flags->set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 2159 e->is_tdls = 1; 2160 } 2161 } 2162 2163 e->noise = 0; /* filled in by caller */ 2164 arr->count++; 2165 2166 return NL_SKIP; 2167 } 2168 2169 static int nl80211_get_survey(const char *ifname, char *buf, int *len) 2170 { 2171 struct nl80211_array_buf arr = { .buf = buf, .count = 0 }; 2172 int rc; 2173 2174 rc = nl80211_request(ifname, NL80211_CMD_GET_SURVEY, 2175 NLM_F_DUMP, nl80211_get_survey_cb, &arr); 2176 if (!rc) 2177 *len = (arr.count * sizeof(struct iwinfo_survey_entry)); 2178 else 2179 *len = 0; 2180 2181 return 0; 2182 } 2183 2184 static int nl80211_get_assoclist(const char *ifname, char *buf, int *len) 2185 { 2186 DIR *d; 2187 int i, noise = 0; 2188 struct dirent *de; 2189 struct nl80211_array_buf arr = { .buf = buf, .count = 0 }; 2190 struct iwinfo_assoclist_entry *e; 2191 2192 if ((d = opendir("/sys/class/net")) != NULL) 2193 { 2194 while ((de = readdir(d)) != NULL) 2195 { 2196 if (!strncmp(de->d_name, ifname, strlen(ifname)) && 2197 (!de->d_name[strlen(ifname)] || 2198 !strncmp(&de->d_name[strlen(ifname)], ".sta", 4))) 2199 { 2200 nl80211_request(de->d_name, NL80211_CMD_GET_STATION, 2201 NLM_F_DUMP, nl80211_get_assoclist_cb, &arr); 2202 } 2203 } 2204 2205 closedir(d); 2206 2207 if (!nl80211_get_noise(ifname, &noise)) 2208 for (i = 0, e = arr.buf; i < arr.count; i++, e++) 2209 e->noise = noise; 2210 2211 *len = (arr.count * sizeof(struct iwinfo_assoclist_entry)); 2212 return 0; 2213 } 2214 2215 return -1; 2216 } 2217 2218 static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg) 2219 { 2220 int *dbm_max = arg; 2221 int ch_cur, ch_cmp, bands_remain, freqs_remain; 2222 2223 struct nlattr **attr = nl80211_parse(msg); 2224 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1]; 2225 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1]; 2226 struct nlattr *band, *freq; 2227 2228 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { 2229 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, 2230 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, 2231 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, 2232 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, 2233 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, 2234 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, 2235 }; 2236 2237 ch_cur = *dbm_max; /* value int* is initialized with channel by caller */ 2238 *dbm_max = -1; 2239 2240 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) 2241 { 2242 nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band), 2243 nla_len(band), NULL); 2244 2245 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain) 2246 { 2247 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX, 2248 nla_data(freq), nla_len(freq), freq_policy); 2249 2250 ch_cmp = nl80211_freq2channel(nla_get_u32( 2251 freqs[NL80211_FREQUENCY_ATTR_FREQ])); 2252 2253 if ((!ch_cur || (ch_cmp == ch_cur)) && 2254 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) 2255 { 2256 *dbm_max = (int)(0.01 * nla_get_u32( 2257 freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])); 2258 2259 break; 2260 } 2261 } 2262 } 2263 2264 return NL_SKIP; 2265 } 2266 2267 static int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len) 2268 { 2269 int err, ch_cur; 2270 int dbm_max = -1, dbm_cur, dbm_cnt; 2271 struct nl80211_msg_conveyor *req; 2272 struct iwinfo_txpwrlist_entry entry; 2273 2274 if (nl80211_get_channel(ifname, &ch_cur)) 2275 ch_cur = 0; 2276 2277 /* initialize the value pointer with channel for callback */ 2278 dbm_max = ch_cur; 2279 2280 err = nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0, 2281 nl80211_get_txpwrlist_cb, &dbm_max); 2282 2283 if (!err) 2284 { 2285 for (dbm_cur = 0, dbm_cnt = 0; 2286 dbm_cur < dbm_max; 2287 dbm_cur++, dbm_cnt++) 2288 { 2289 entry.dbm = dbm_cur; 2290 entry.mw = iwinfo_dbm2mw(dbm_cur); 2291 2292 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry)); 2293 } 2294 2295 entry.dbm = dbm_max; 2296 entry.mw = iwinfo_dbm2mw(dbm_max); 2297 2298 memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry)); 2299 dbm_cnt++; 2300 2301 *len = dbm_cnt * sizeof(entry); 2302 return 0; 2303 } 2304 2305 return -1; 2306 } 2307 2308 static void nl80211_get_scancrypto(char *spec, struct iwinfo_crypto_entry *c) 2309 { 2310 int wpa_version = 0; 2311 char *p, *q, *proto, *suites; 2312 2313 c->enabled = 0; 2314 2315 for (p = strtok_r(spec, "[]", &q); p; p = strtok_r(NULL, "[]", &q)) { 2316 if (!strcmp(p, "WEP")) { 2317 c->enabled = 1; 2318 c->auth_suites = IWINFO_KMGMT_NONE; 2319 c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED; 2320 c->pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104; 2321 break; 2322 } 2323 2324 proto = strtok(p, "-"); 2325 suites = strtok(NULL, "]"); 2326 2327 if (!proto || !suites) 2328 continue; 2329 2330 if (!strcmp(proto, "WPA2") || !strcmp(proto, "RSN")) 2331 wpa_version = 2; 2332 else if (!strcmp(proto, "WPA")) 2333 wpa_version = 1; 2334 else 2335 continue; 2336 2337 c->enabled = 1; 2338 2339 parse_wpa_suites(suites, wpa_version, &c->wpa_version, &c->auth_suites); 2340 parse_wpa_ciphers(suites, &c->pair_ciphers); 2341 } 2342 } 2343 2344 2345 struct nl80211_scanlist { 2346 struct iwinfo_scanlist_entry *e; 2347 int len; 2348 }; 2349 2350 2351 static void nl80211_get_scanlist_ie(struct nlattr **bss, 2352 struct iwinfo_scanlist_entry *e) 2353 { 2354 int ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 2355 unsigned char *ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 2356 static unsigned char ms_oui[3] = { 0x00, 0x50, 0xf2 }; 2357 int len; 2358 2359 while (ielen >= 2 && ielen >= ie[1]) 2360 { 2361 switch (ie[0]) 2362 { 2363 case 0: /* SSID */ 2364 case 114: /* Mesh ID */ 2365 if (e->ssid[0] == 0) { 2366 len = min(ie[1], IWINFO_ESSID_MAX_SIZE); 2367 memcpy(e->ssid, ie + 2, len); 2368 e->ssid[len] = 0; 2369 } 2370 break; 2371 2372 case 48: /* RSN */ 2373 iwinfo_parse_rsn(&e->crypto, ie + 2, ie[1], 2374 IWINFO_CIPHER_CCMP, IWINFO_KMGMT_8021x); 2375 break; 2376 2377 case 221: /* Vendor */ 2378 if (ie[1] >= 4 && !memcmp(ie + 2, ms_oui, 3) && ie[5] == 1) 2379 iwinfo_parse_rsn(&e->crypto, ie + 6, ie[1] - 4, 2380 IWINFO_CIPHER_TKIP, IWINFO_KMGMT_PSK); 2381 break; 2382 case 61: /* HT oeration */ 2383 if (ie[1] >= 3) { 2384 e->ht_chan_info.primary_chan = ie[2]; 2385 e->ht_chan_info.secondary_chan_off = ie[3] & 0x3; 2386 e->ht_chan_info.chan_width = (ie[4] & 0x4)>>2; 2387 } 2388 break; 2389 case 192: /* VHT operation */ 2390 if (ie[1] >= 3) { 2391 e->vht_chan_info.chan_width = ie[2]; 2392 e->vht_chan_info.center_chan_1 = ie[3]; 2393 e->vht_chan_info.center_chan_2 = ie[4]; 2394 } 2395 break; 2396 } 2397 2398 ielen -= ie[1] + 2; 2399 ie += ie[1] + 2; 2400 } 2401 } 2402 2403 static int nl80211_get_scanlist_cb(struct nl_msg *msg, void *arg) 2404 { 2405 int8_t rssi; 2406 uint16_t caps; 2407 2408 struct nl80211_scanlist *sl = arg; 2409 struct nlattr **tb = nl80211_parse(msg); 2410 struct nlattr *bss[NL80211_BSS_MAX + 1]; 2411 2412 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 2413 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 2414 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 2415 [NL80211_BSS_BSSID] = { 0 }, 2416 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 2417 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 2418 [NL80211_BSS_INFORMATION_ELEMENTS] = { 0 }, 2419 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 2420 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 2421 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 2422 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 2423 [NL80211_BSS_BEACON_IES] = { 0 }, 2424 }; 2425 2426 if (!tb[NL80211_ATTR_BSS] || 2427 nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 2428 bss_policy) || 2429 !bss[NL80211_BSS_BSSID]) 2430 { 2431 return NL_SKIP; 2432 } 2433 2434 if (bss[NL80211_BSS_CAPABILITY]) 2435 caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 2436 else 2437 caps = 0; 2438 2439 memset(sl->e, 0, sizeof(*sl->e)); 2440 memcpy(sl->e->mac, nla_data(bss[NL80211_BSS_BSSID]), 6); 2441 2442 if (caps & (1<<1)) 2443 sl->e->mode = IWINFO_OPMODE_ADHOC; 2444 else if (caps & (1<<0)) 2445 sl->e->mode = IWINFO_OPMODE_MASTER; 2446 else 2447 sl->e->mode = IWINFO_OPMODE_MESHPOINT; 2448 2449 if (caps & (1<<4)) 2450 sl->e->crypto.enabled = 1; 2451 2452 if (bss[NL80211_BSS_FREQUENCY]) 2453 sl->e->channel = nl80211_freq2channel(nla_get_u32( 2454 bss[NL80211_BSS_FREQUENCY])); 2455 2456 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) 2457 nl80211_get_scanlist_ie(bss, sl->e); 2458 2459 if (bss[NL80211_BSS_SIGNAL_MBM]) 2460 { 2461 sl->e->signal = 2462 (uint8_t)((int32_t)nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]) / 100); 2463 2464 rssi = sl->e->signal - 0x100; 2465 2466 if (rssi < -110) 2467 rssi = -110; 2468 else if (rssi > -40) 2469 rssi = -40; 2470 2471 sl->e->quality = (rssi + 110); 2472 sl->e->quality_max = 70; 2473 } 2474 2475 if (sl->e->crypto.enabled && !sl->e->crypto.wpa_version) 2476 { 2477 sl->e->crypto.auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED; 2478 sl->e->crypto.pair_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104; 2479 } 2480 2481 sl->e++; 2482 sl->len++; 2483 2484 return NL_SKIP; 2485 } 2486 2487 static int nl80211_get_scanlist_nl(const char *ifname, char *buf, int *len) 2488 { 2489 struct nl80211_scanlist sl = { .e = (struct iwinfo_scanlist_entry *)buf }; 2490 2491 if (nl80211_request(ifname, NL80211_CMD_TRIGGER_SCAN, 0, NULL, NULL)) 2492 goto out; 2493 2494 if (nl80211_wait("nl80211", "scan", 2495 NL80211_CMD_NEW_SCAN_RESULTS, NL80211_CMD_SCAN_ABORTED)) 2496 goto out; 2497 2498 if (nl80211_request(ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP, 2499 nl80211_get_scanlist_cb, &sl)) 2500 goto out; 2501 2502 *len = sl.len * sizeof(struct iwinfo_scanlist_entry); 2503 return 0; 2504 2505 out: 2506 *len = 0; 2507 return -1; 2508 } 2509 2510 static int wpasupp_ssid_decode(const char *in, char *out, int outlen) 2511 { 2512 #define hex(x) \ 2513 (((x) >= 'a') ? ((x) - 'a' + 10) : \ 2514 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - ''))) 2515 2516 int len = 0; 2517 2518 while (*in) 2519 { 2520 if (len + 1 >= outlen) 2521 break; 2522 2523 switch (*in) 2524 { 2525 case '\\': 2526 in++; 2527 switch (*in) 2528 { 2529 case 'n': 2530 out[len++] = '\n'; in++; 2531 break; 2532 2533 case 'r': 2534 out[len++] = '\r'; in++; 2535 break; 2536 2537 case 't': 2538 out[len++] = '\t'; in++; 2539 break; 2540 2541 case 'e': 2542 out[len++] = '\033'; in++; 2543 break; 2544 2545 case 'x': 2546 if (isxdigit(*(in+1)) && isxdigit(*(in+2))) 2547 out[len++] = hex(*(in+1)) * 16 + hex(*(in+2)); 2548 in += 3; 2549 break; 2550 2551 default: 2552 out[len++] = *in++; 2553 break; 2554 } 2555 break; 2556 2557 default: 2558 out[len++] = *in++; 2559 break; 2560 } 2561 } 2562 2563 if (outlen > len) 2564 out[len] = '\0'; 2565 2566 return len; 2567 } 2568 2569 static int nl80211_get_scanlist_wpactl(const char *ifname, char *buf, int *len) 2570 { 2571 int sock, qmax, rssi, tries, count = -1, ready = 0; 2572 char *pos, *line, *bssid, *freq, *signal, *flags, *ssid, reply[4096]; 2573 struct sockaddr_un local = { 0 }; 2574 struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf; 2575 2576 sock = nl80211_wpactl_connect(ifname, &local); 2577 2578 if (sock < 0) 2579 return sock; 2580 2581 send(sock, "ATTACH", 6, 0); 2582 send(sock, "SCAN", 4, 0); 2583 2584 /* 2585 * wait for scan results: 2586 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan 2587 * 72 channels at most. We'll also receive two "OK" messages acknowledging 2588 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra 2589 * time to process the results, so try 72 + 2 + 1 times. 2590 */ 2591 for (tries = 0; tries < 75; tries++) 2592 { 2593 if (nl80211_wpactl_recv(sock, reply, sizeof(reply)) <= 0) 2594 continue; 2595 2596 /* got an event notification */ 2597 if (reply[0] == '<') 2598 { 2599 /* scan results are ready */ 2600 if (strstr(reply, "CTRL-EVENT-SCAN-RESULTS")) 2601 { 2602 /* send "SCAN_RESULTS" command */ 2603 ready = (send(sock, "SCAN_RESULTS", 12, 0) == 12); 2604 break; 2605 } 2606 2607 /* is another unrelated event, retry */ 2608 tries--; 2609 } 2610 2611 /* scanning already in progress, keep awaiting results */ 2612 else if (!strcmp(reply, "FAIL-BUSY\n")) 2613 { 2614 tries--; 2615 } 2616 2617 /* another failure, abort */ 2618 else if (!strncmp(reply, "FAIL-", 5)) 2619 { 2620 break; 2621 } 2622 } 2623 2624 /* receive and parse scan results if the wait above didn't time out */ 2625 while (ready && nl80211_wpactl_recv(sock, reply, sizeof(reply)) > 0) 2626 { 2627 /* received an event notification, receive again */ 2628 if (reply[0] == '<') 2629 continue; 2630 2631 nl80211_get_quality_max(ifname, &qmax); 2632 2633 for (line = strtok_r(reply, "\n", &pos); 2634 line != NULL; 2635 line = strtok_r(NULL, "\n", &pos)) 2636 { 2637 /* skip header line */ 2638 if (count < 0) 2639 { 2640 count++; 2641 continue; 2642 } 2643 2644 bssid = strtok(line, "\t"); 2645 freq = strtok(NULL, "\t"); 2646 signal = strtok(NULL, "\t"); 2647 flags = strtok(NULL, "\t"); 2648 ssid = strtok(NULL, "\n"); 2649 2650 if (!bssid || !freq || !signal || !flags) 2651 continue; 2652 2653 /* BSSID */ 2654 e->mac[0] = strtol(&bssid[0], NULL, 16); 2655 e->mac[1] = strtol(&bssid[3], NULL, 16); 2656 e->mac[2] = strtol(&bssid[6], NULL, 16); 2657 e->mac[3] = strtol(&bssid[9], NULL, 16); 2658 e->mac[4] = strtol(&bssid[12], NULL, 16); 2659 e->mac[5] = strtol(&bssid[15], NULL, 16); 2660 2661 /* SSID */ 2662 if (ssid) 2663 wpasupp_ssid_decode(ssid, e->ssid, sizeof(e->ssid)); 2664 else 2665 e->ssid[0] = 0; 2666 2667 /* Mode */ 2668 if (strstr(flags, "[MESH]")) 2669 e->mode = IWINFO_OPMODE_MESHPOINT; 2670 else if (strstr(flags, "[IBSS]")) 2671 e->mode = IWINFO_OPMODE_ADHOC; 2672 else 2673 e->mode = IWINFO_OPMODE_MASTER; 2674 2675 /* Channel */ 2676 e->channel = nl80211_freq2channel(atoi(freq)); 2677 2678 /* Signal */ 2679 rssi = atoi(signal); 2680 e->signal = rssi; 2681 2682 /* Quality */ 2683 if (rssi < 0) 2684 { 2685 /* The cfg80211 wext compat layer assumes a signal range 2686 * of -110 dBm to -40 dBm, the quality value is derived 2687 * by adding 110 to the signal level */ 2688 if (rssi < -110) 2689 rssi = -110; 2690 else if (rssi > -40) 2691 rssi = -40; 2692 2693 e->quality = (rssi + 110); 2694 } 2695 else 2696 { 2697 e->quality = rssi; 2698 } 2699 2700 /* Max. Quality */ 2701 e->quality_max = qmax; 2702 2703 /* Crypto */ 2704 nl80211_get_scancrypto(flags, &e->crypto); 2705 2706 count++; 2707 e++; 2708 } 2709 2710 *len = count * sizeof(struct iwinfo_scanlist_entry); 2711 break; 2712 } 2713 2714 close(sock); 2715 unlink(local.sun_path); 2716 2717 return (count >= 0) ? 0 : -1; 2718 } 2719 2720 static int nl80211_get_scanlist(const char *ifname, char *buf, int *len) 2721 { 2722 char *res; 2723 int rv, mode; 2724 2725 *len = 0; 2726 2727 /* Got a radioX pseudo interface, find some interface on it or create one */ 2728 if (!strncmp(ifname, "radio", 5)) 2729 { 2730 /* Reuse existing interface */ 2731 if ((res = nl80211_phy2ifname(ifname)) != NULL) 2732 { 2733 return nl80211_get_scanlist(res, buf, len); 2734 } 2735 2736 /* Need to spawn a temporary iface for scanning */ 2737 else if ((res = nl80211_ifadd(ifname)) != NULL) 2738 { 2739 rv = nl80211_get_scanlist(res, buf, len); 2740 nl80211_ifdel(res); 2741 return rv; 2742 } 2743 } 2744 2745 /* WPA supplicant */ 2746 if (!nl80211_get_scanlist_wpactl(ifname, buf, len)) 2747 { 2748 return 0; 2749 } 2750 2751 /* station / ad-hoc / monitor scan */ 2752 else if (!nl80211_get_mode(ifname, &mode) && 2753 (mode == IWINFO_OPMODE_ADHOC || 2754 mode == IWINFO_OPMODE_MASTER || 2755 mode == IWINFO_OPMODE_CLIENT || 2756 mode == IWINFO_OPMODE_MONITOR) && 2757 iwinfo_ifup(ifname)) 2758 { 2759 return nl80211_get_scanlist_nl(ifname, buf, len); 2760 } 2761 2762 /* AP scan */ 2763 else 2764 { 2765 /* Got a temp interface, don't create yet another one */ 2766 if (!strncmp(ifname, "tmp.", 4)) 2767 { 2768 if (!iwinfo_ifup(ifname)) 2769 return -1; 2770 2771 rv = nl80211_get_scanlist_nl(ifname, buf, len); 2772 iwinfo_ifdown(ifname); 2773 return rv; 2774 } 2775 2776 /* Spawn a new scan interface */ 2777 else 2778 { 2779 if (!(res = nl80211_ifadd(ifname))) 2780 return -1; 2781 2782 iwinfo_ifmac(res); 2783 2784 /* if we can take the new interface up, the driver supports an 2785 * additional interface and there's no need to tear down the ap */ 2786 if (iwinfo_ifup(res)) 2787 { 2788 rv = nl80211_get_scanlist_nl(res, buf, len); 2789 iwinfo_ifdown(res); 2790 } 2791 2792 /* driver cannot create secondary interface, take down ap 2793 * during scan */ 2794 else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res)) 2795 { 2796 rv = nl80211_get_scanlist_nl(res, buf, len); 2797 iwinfo_ifdown(res); 2798 iwinfo_ifup(ifname); 2799 nl80211_hostapd_hup(ifname); 2800 } 2801 2802 nl80211_ifdel(res); 2803 return rv; 2804 } 2805 } 2806 2807 return -1; 2808 } 2809 2810 static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg) 2811 { 2812 int bands_remain, freqs_remain; 2813 2814 struct nl80211_array_buf *arr = arg; 2815 struct iwinfo_freqlist_entry *e; 2816 2817 struct nlattr **attr = nl80211_parse(msg); 2818 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1]; 2819 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1]; 2820 struct nlattr *band, *freq; 2821 2822 e = arr->buf; 2823 e += arr->count; 2824 2825 if (attr[NL80211_ATTR_WIPHY_BANDS]) { 2826 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) 2827 { 2828 nla_parse(bands, NL80211_BAND_ATTR_MAX, 2829 nla_data(band), nla_len(band), NULL); 2830 2831 if (bands[NL80211_BAND_ATTR_FREQS]) { 2832 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], freqs_remain) 2833 { 2834 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX, 2835 nla_data(freq), nla_len(freq), NULL); 2836 2837 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ] || 2838 freqs[NL80211_FREQUENCY_ATTR_DISABLED]) 2839 continue; 2840 2841 e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]); 2842 e->channel = nl80211_freq2channel(e->mhz); 2843 2844 e->restricted = ( 2845 freqs[NL80211_FREQUENCY_ATTR_NO_IR] && 2846 !freqs[NL80211_FREQUENCY_ATTR_RADAR] 2847 ) ? 1 : 0; 2848 2849 if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_MINUS]) 2850 e->flags |= IWINFO_FREQ_NO_HT40MINUS; 2851 if (freqs[NL80211_FREQUENCY_ATTR_NO_HT40_PLUS]) 2852 e->flags |= IWINFO_FREQ_NO_HT40PLUS; 2853 if (freqs[NL80211_FREQUENCY_ATTR_NO_80MHZ]) 2854 e->flags |= IWINFO_FREQ_NO_80MHZ; 2855 if (freqs[NL80211_FREQUENCY_ATTR_NO_160MHZ]) 2856 e->flags |= IWINFO_FREQ_NO_160MHZ; 2857 if (freqs[NL80211_FREQUENCY_ATTR_NO_20MHZ]) 2858 e->flags |= IWINFO_FREQ_NO_20MHZ; 2859 if (freqs[NL80211_FREQUENCY_ATTR_NO_10MHZ]) 2860 e->flags |= IWINFO_FREQ_NO_10MHZ; 2861 2862 e++; 2863 arr->count++; 2864 } 2865 } 2866 } 2867 } 2868 2869 return NL_SKIP; 2870 } 2871 2872 static int nl80211_get_freqlist(const char *ifname, char *buf, int *len) 2873 { 2874 struct nl80211_msg_conveyor *cv; 2875 struct nl80211_array_buf arr = { .buf = buf, .count = 0 }; 2876 uint32_t features = nl80211_get_protocol_features(ifname); 2877 int flags; 2878 2879 flags = features & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP ? NLM_F_DUMP : 0; 2880 cv = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, flags); 2881 if (!cv) 2882 goto out; 2883 2884 NLA_PUT_FLAG(cv->msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 2885 if (nl80211_send(cv, nl80211_get_freqlist_cb, &arr)) 2886 goto out; 2887 2888 *len = arr.count * sizeof(struct iwinfo_freqlist_entry); 2889 return 0; 2890 2891 nla_put_failure: 2892 nl80211_free(cv); 2893 out: 2894 *len = 0; 2895 return -1; 2896 } 2897 2898 static int nl80211_get_country_cb(struct nl_msg *msg, void *arg) 2899 { 2900 char *buf = arg; 2901 struct nlattr **attr = nl80211_parse(msg); 2902 2903 if (attr[NL80211_ATTR_REG_ALPHA2]) 2904 memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2); 2905 else 2906 buf[0] = 0; 2907 2908 return NL_SKIP; 2909 } 2910 2911 static int nl80211_get_country(const char *ifname, char *buf) 2912 { 2913 if (nl80211_request(ifname, NL80211_CMD_GET_REG, 0, 2914 nl80211_get_country_cb, buf)) 2915 return -1; 2916 2917 return 0; 2918 } 2919 2920 static int nl80211_get_countrylist(const char *ifname, char *buf, int *len) 2921 { 2922 int count; 2923 struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf; 2924 const struct iwinfo_iso3166_label *l; 2925 2926 for (l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++) 2927 { 2928 e->iso3166 = l->iso3166; 2929 e->ccode[0] = (l->iso3166 / 256); 2930 e->ccode[1] = (l->iso3166 % 256); 2931 e->ccode[2] = 0; 2932 } 2933 2934 *len = (count * sizeof(struct iwinfo_country_entry)); 2935 return 0; 2936 } 2937 2938 2939 struct nl80211_modes 2940 { 2941 bool ok; 2942 uint32_t hw; 2943 uint32_t ht; 2944 }; 2945 2946 static int nl80211_get_modelist_cb(struct nl_msg *msg, void *arg) 2947 { 2948 struct nl80211_modes *m = arg; 2949 int bands_remain, freqs_remain; 2950 uint16_t caps = 0; 2951 uint32_t vht_caps = 0; 2952 struct nlattr **attr = nl80211_parse(msg); 2953 struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1]; 2954 struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1]; 2955 struct nlattr *band, *freq; 2956 2957 if (attr[NL80211_ATTR_WIPHY_BANDS]) 2958 { 2959 nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) 2960 { 2961 nla_parse(bands, NL80211_BAND_ATTR_MAX, 2962 nla_data(band), nla_len(band), NULL); 2963 2964 if (bands[NL80211_BAND_ATTR_HT_CAPA]) 2965 caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]); 2966 2967 /* Treat any nonzero capability as 11n */ 2968 if (caps > 0) 2969 { 2970 m->hw |= IWINFO_80211_N; 2971 m->ht |= IWINFO_HTMODE_HT20; 2972 2973 if (caps & (1 << 1)) 2974 m->ht |= IWINFO_HTMODE_HT40; 2975 } 2976 2977 if (bands[NL80211_BAND_ATTR_IFTYPE_DATA]) { 2978 struct nlattr *tb[NL80211_BAND_IFTYPE_ATTR_MAX + 1]; 2979 uint16_t phy_cap[6] = { 0 }; 2980 struct nlattr *nl_iftype; 2981 int rem_band; 2982 int len; 2983 2984 m->hw |= IWINFO_80211_AX; 2985 m->ht |= IWINFO_HTMODE_HE20; 2986 2987 nla_for_each_nested(nl_iftype, bands[NL80211_BAND_ATTR_IFTYPE_DATA], rem_band) { 2988 nla_parse(tb, NL80211_BAND_IFTYPE_ATTR_MAX, 2989 nla_data(nl_iftype), nla_len(nl_iftype), NULL); 2990 if (tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]) { 2991 len = nla_len(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]); 2992 2993 if (len > sizeof(phy_cap) - 1) 2994 len = sizeof(phy_cap) - 1; 2995 memcpy(&((__u8 *)phy_cap)[1], 2996 nla_data(tb[NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY]), 2997 len); 2998 } 2999 3000 if (phy_cap[0] & BIT(9)) 3001 m->ht |= IWINFO_HTMODE_HE40; 3002 if (phy_cap[0] & BIT(10)) 3003 m->ht |= IWINFO_HTMODE_HE40 | IWINFO_HTMODE_HE80; 3004 if (phy_cap[0] & BIT(11)) 3005 m->ht |= IWINFO_HTMODE_HE160; 3006 if (phy_cap[0] & BIT(12)) 3007 m->ht |= IWINFO_HTMODE_HE160 | IWINFO_HTMODE_HE80_80; 3008 } 3009 } 3010 3011 nla_for_each_nested(freq, bands[NL80211_BAND_ATTR_FREQS], 3012 freqs_remain) 3013 { 3014 nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX, 3015 nla_data(freq), nla_len(freq), NULL); 3016 3017 if (!freqs[NL80211_FREQUENCY_ATTR_FREQ]) 3018 continue; 3019 3020 if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485) 3021 { 3022 m->hw |= IWINFO_80211_B; 3023 m->hw |= IWINFO_80211_G; 3024 } 3025 else if (bands[NL80211_BAND_ATTR_VHT_CAPA]) 3026 { 3027 vht_caps = nla_get_u32(bands[NL80211_BAND_ATTR_VHT_CAPA]); 3028 3029 /* Treat any nonzero capability as 11ac */ 3030 if (vht_caps > 0) 3031 { 3032 m->hw |= IWINFO_80211_AC; 3033 m->ht |= IWINFO_HTMODE_VHT20 | IWINFO_HTMODE_VHT40 | IWINFO_HTMODE_VHT80; 3034 3035 switch ((vht_caps >> 2) & 3) 3036 { 3037 case 2: 3038 m->ht |= IWINFO_HTMODE_VHT80_80; 3039 /* fall through */ 3040 3041 case 1: 3042 m->ht |= IWINFO_HTMODE_VHT160; 3043 } 3044 } 3045 } 3046 else if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) >= 56160) 3047 { 3048 m->hw |= IWINFO_80211_AD; 3049 } 3050 else if (!(m->hw & IWINFO_80211_AC)) 3051 { 3052 m->hw |= IWINFO_80211_A; 3053 } 3054 } 3055 } 3056 3057 m->ok = 1; 3058 } 3059 3060 return NL_SKIP; 3061 } 3062 3063 static int nl80211_get_hwmodelist(const char *ifname, int *buf) 3064 { 3065 struct nl80211_modes m = { 0 }; 3066 3067 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0, 3068 nl80211_get_modelist_cb, &m)) 3069 goto out; 3070 3071 if (!m.ok) 3072 goto out; 3073 3074 *buf = m.hw; 3075 return 0; 3076 3077 out: 3078 *buf = 0; 3079 return -1; 3080 } 3081 3082 struct chan_info { 3083 int width; 3084 int mode; 3085 }; 3086 3087 static int nl80211_get_htmode_cb(struct nl_msg *msg, void *arg) 3088 { 3089 struct nlattr **tb = nl80211_parse(msg); 3090 struct nlattr *cur; 3091 struct chan_info *chn = arg; 3092 3093 if ((cur = tb[NL80211_ATTR_CHANNEL_WIDTH])) 3094 chn->width = nla_get_u32(cur); 3095 3096 if ((cur = tb[NL80211_ATTR_BSS_HT_OPMODE])) 3097 chn->mode = nla_get_u32(cur); 3098 3099 return NL_SKIP; 3100 } 3101 3102 static int nl80211_get_htmode(const char *ifname, int *buf) 3103 { 3104 struct chan_info chn = { .width = 0, .mode = 0 }; 3105 char *res; 3106 int err; 3107 3108 res = nl80211_phy2ifname(ifname); 3109 *buf = 0; 3110 3111 err = nl80211_request(res ? res : ifname, 3112 NL80211_CMD_GET_INTERFACE, 0, 3113 nl80211_get_htmode_cb, &chn); 3114 if (err) 3115 return -1; 3116 3117 switch (chn.width) { 3118 case NL80211_CHAN_WIDTH_20: 3119 if (chn.mode == -1) 3120 *buf = IWINFO_HTMODE_VHT20; 3121 else 3122 *buf = IWINFO_HTMODE_HT20; 3123 break; 3124 case NL80211_CHAN_WIDTH_40: 3125 if (chn.mode == -1) 3126 *buf = IWINFO_HTMODE_VHT40; 3127 else 3128 *buf = IWINFO_HTMODE_HT40; 3129 break; 3130 case NL80211_CHAN_WIDTH_80: 3131 *buf = IWINFO_HTMODE_VHT80; 3132 break; 3133 case NL80211_CHAN_WIDTH_80P80: 3134 *buf = IWINFO_HTMODE_VHT80_80; 3135 break; 3136 case NL80211_CHAN_WIDTH_160: 3137 *buf = IWINFO_HTMODE_VHT160; 3138 break; 3139 case NL80211_CHAN_WIDTH_5: 3140 case NL80211_CHAN_WIDTH_10: 3141 case NL80211_CHAN_WIDTH_20_NOHT: 3142 *buf = IWINFO_HTMODE_NOHT; 3143 break; 3144 default: 3145 return -1; 3146 } 3147 3148 return 0; 3149 } 3150 3151 static int nl80211_get_htmodelist(const char *ifname, int *buf) 3152 { 3153 struct nl80211_modes m = { 0 }; 3154 3155 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0, 3156 nl80211_get_modelist_cb, &m)) 3157 goto out; 3158 3159 if (!m.ok) 3160 goto out; 3161 3162 *buf = m.ht; 3163 return 0; 3164 3165 out: 3166 *buf = 0; 3167 return -1; 3168 } 3169 3170 3171 static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg) 3172 { 3173 struct nlattr **attr = nl80211_parse(msg); 3174 struct nlattr *comb; 3175 int *ret = arg; 3176 int comb_rem, limit_rem, mode_rem; 3177 3178 *ret = 0; 3179 if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS]) 3180 return NL_SKIP; 3181 3182 nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem) 3183 { 3184 static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 3185 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 3186 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 3187 }; 3188 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB+1]; 3189 static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 3190 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 3191 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 3192 }; 3193 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT+1]; 3194 struct nlattr *limit; 3195 3196 nla_parse_nested(tb_comb, NUM_NL80211_IFACE_COMB, comb, iface_combination_policy); 3197 3198 if (!tb_comb[NL80211_IFACE_COMB_LIMITS]) 3199 continue; 3200 3201 nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem) 3202 { 3203 struct nlattr *mode; 3204 3205 nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy); 3206 3207 if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] || 3208 !tb_limit[NL80211_IFACE_LIMIT_MAX]) 3209 continue; 3210 3211 if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2) 3212 continue; 3213 3214 nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) { 3215 if (nla_type(mode) == NL80211_IFTYPE_AP) 3216 *ret = 1; 3217 } 3218 } 3219 } 3220 3221 return NL_SKIP; 3222 } 3223 3224 static int nl80211_get_mbssid_support(const char *ifname, int *buf) 3225 { 3226 if (nl80211_request(ifname, NL80211_CMD_GET_WIPHY, 0, 3227 nl80211_get_ifcomb_cb, buf)) 3228 return -1; 3229 3230 return 0; 3231 } 3232 3233 static int nl80211_hardware_id_from_fdt(struct iwinfo_hardware_id *id, const char *ifname) 3234 { 3235 char *phy, compat[64], path[PATH_MAX]; 3236 int i; 3237 3238 /* Try to determine the phy name from the given interface */ 3239 phy = nl80211_ifname2phy(ifname); 3240 3241 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/of_node/compatible", 3242 phy ? "ieee80211" : "net", phy ? phy : ifname); 3243 3244 if (nl80211_readstr(path, compat, sizeof(compat)) <= 0) 3245 return -1; 3246 3247 if (!strcmp(compat, "qca,ar9130-wmac")) { 3248 id->vendor_id = 0x168c; 3249 id->device_id = 0x0029; 3250 id->subsystem_vendor_id = 0x168c; 3251 id->subsystem_device_id = 0x9130; 3252 } else if (!strcmp(compat, "qca,ar9330-wmac")) { 3253 id->vendor_id = 0x168c; 3254 id->device_id = 0x0030; 3255 id->subsystem_vendor_id = 0x168c; 3256 id->subsystem_device_id = 0x9330; 3257 } else if (!strcmp(compat, "qca,ar9340-wmac")) { 3258 id->vendor_id = 0x168c; 3259 id->device_id = 0x0030; 3260 id->subsystem_vendor_id = 0x168c; 3261 id->subsystem_device_id = 0x9340; 3262 } else if (!strcmp(compat, "qca,qca9530-wmac")) { 3263 id->vendor_id = 0x168c; 3264 id->device_id = 0x0033; 3265 id->subsystem_vendor_id = 0x168c; 3266 id->subsystem_device_id = 0x9530; 3267 } else if (!strcmp(compat, "qca,qca9550-wmac")) { 3268 id->vendor_id = 0x168c; 3269 id->device_id = 0x0033; 3270 id->subsystem_vendor_id = 0x168c; 3271 id->subsystem_device_id = 0x9550; 3272 } else if (!strcmp(compat, "qca,qca9560-wmac")) { 3273 id->vendor_id = 0x168c; 3274 id->device_id = 0x0033; 3275 id->subsystem_vendor_id = 0x168c; 3276 id->subsystem_device_id = 0x9560; 3277 } else if (!strcmp(compat, "qcom,ipq4019-wifi")) { 3278 id->vendor_id = 0x168c; 3279 id->device_id = 0x003c; 3280 id->subsystem_vendor_id = 0x168c; 3281 id->subsystem_device_id = 0x4019; 3282 } else if (!strcmp(compat, "mediatek,mt7622-wmac")) { 3283 id->vendor_id = 0x14c3; 3284 id->device_id = 0x7622; 3285 id->subsystem_vendor_id = 0x14c3; 3286 id->subsystem_device_id = 0x7622; 3287 } 3288 return (id->vendor_id && id->device_id) ? 0 : -1; 3289 } 3290 3291 3292 static int nl80211_get_hardware_id(const char *ifname, char *buf) 3293 { 3294 struct iwinfo_hardware_id *id = (struct iwinfo_hardware_id *)buf; 3295 char *phy, num[8], path[PATH_MAX]; 3296 int i; 3297 3298 struct { const char *path; uint16_t *dest; } lookup[] = { 3299 { "vendor", &id->vendor_id }, 3300 { "device", &id->device_id }, 3301 { "subsystem_vendor", &id->subsystem_vendor_id }, 3302 { "subsystem_device", &id->subsystem_device_id } 3303 }; 3304 3305 memset(id, 0, sizeof(*id)); 3306 3307 /* Try to determine the phy name from the given interface */ 3308 phy = nl80211_ifname2phy(ifname); 3309 3310 for (i = 0; i < ARRAY_SIZE(lookup); i++) 3311 { 3312 snprintf(path, sizeof(path), "/sys/class/%s/%s/device/%s", 3313 phy ? "ieee80211" : "net", 3314 phy ? phy : ifname, lookup[i].path); 3315 3316 if (nl80211_readstr(path, num, sizeof(num)) > 0) 3317 *lookup[i].dest = strtoul(num, NULL, 16); 3318 } 3319 3320 /* Failed to obtain hardware IDs, try FDT */ 3321 if (id->vendor_id == 0 || id->device_id == 0) 3322 if (!nl80211_hardware_id_from_fdt(id, ifname)) 3323 return 0; 3324 3325 /* Failed to obtain hardware IDs, search board config */ 3326 if (id->vendor_id == 0 || id->device_id == 0) 3327 return iwinfo_hardware_id_from_mtd(id); 3328 3329 return 0; 3330 } 3331 3332 static const struct iwinfo_hardware_entry * 3333 nl80211_get_hardware_entry(const char *ifname) 3334 { 3335 struct iwinfo_hardware_id id; 3336 3337 if (nl80211_get_hardware_id(ifname, (char *)&id)) 3338 return NULL; 3339 3340 return iwinfo_hardware(&id); 3341 } 3342 3343 static int nl80211_get_hardware_name(const char *ifname, char *buf) 3344 { 3345 const struct iwinfo_hardware_entry *hw; 3346 3347 if (!(hw = nl80211_get_hardware_entry(ifname))) 3348 sprintf(buf, "Generic MAC80211"); 3349 else 3350 sprintf(buf, "%s %s", hw->vendor_name, hw->device_name); 3351 3352 return 0; 3353 } 3354 3355 static int nl80211_get_txpower_offset(const char *ifname, int *buf) 3356 { 3357 const struct iwinfo_hardware_entry *hw; 3358 3359 if (!(hw = nl80211_get_hardware_entry(ifname))) 3360 return -1; 3361 3362 *buf = hw->txpower_offset; 3363 return 0; 3364 } 3365 3366 static int nl80211_get_frequency_offset(const char *ifname, int *buf) 3367 { 3368 const struct iwinfo_hardware_entry *hw; 3369 3370 if (!(hw = nl80211_get_hardware_entry(ifname))) 3371 return -1; 3372 3373 *buf = hw->frequency_offset; 3374 return 0; 3375 } 3376 3377 static int nl80211_lookup_phyname(const char *section, char *buf) 3378 { 3379 int idx; 3380 3381 if ((idx = nl80211_phy_idx_from_uci(section)) < 0) 3382 return -1; 3383 3384 sprintf(buf, "phy%d", idx); 3385 return 0; 3386 } 3387 3388 const struct iwinfo_ops nl80211_ops = { 3389 .name = "nl80211", 3390 .probe = nl80211_probe, 3391 .channel = nl80211_get_channel, 3392 .center_chan1 = nl80211_get_center_chan1, 3393 .center_chan2 = nl80211_get_center_chan2, 3394 .frequency = nl80211_get_frequency, 3395 .frequency_offset = nl80211_get_frequency_offset, 3396 .txpower = nl80211_get_txpower, 3397 .txpower_offset = nl80211_get_txpower_offset, 3398 .bitrate = nl80211_get_bitrate, 3399 .signal = nl80211_get_signal, 3400 .noise = nl80211_get_noise, 3401 .quality = nl80211_get_quality, 3402 .quality_max = nl80211_get_quality_max, 3403 .mbssid_support = nl80211_get_mbssid_support, 3404 .hwmodelist = nl80211_get_hwmodelist, 3405 .htmodelist = nl80211_get_htmodelist, 3406 .htmode = nl80211_get_htmode, 3407 .mode = nl80211_get_mode, 3408 .ssid = nl80211_get_ssid, 3409 .bssid = nl80211_get_bssid, 3410 .country = nl80211_get_country, 3411 .hardware_id = nl80211_get_hardware_id, 3412 .hardware_name = nl80211_get_hardware_name, 3413 .encryption = nl80211_get_encryption, 3414 .phyname = nl80211_get_phyname, 3415 .assoclist = nl80211_get_assoclist, 3416 .txpwrlist = nl80211_get_txpwrlist, 3417 .scanlist = nl80211_get_scanlist, 3418 .freqlist = nl80211_get_freqlist, 3419 .countrylist = nl80211_get_countrylist, 3420 .survey = nl80211_get_survey, 3421 .lookup_phy = nl80211_lookup_phyname, 3422 .close = nl80211_close 3423 }; 3424
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