hostapd/ctrl_iface.c

   1 /*
   2  * hostapd / UNIX domain socket -based control interface
   3  * Copyright (c) 2004-2014, 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 "utils/includes.h"
  10
  11 #ifndef CONFIG_NATIVE_WINDOWS
  12
  13 #ifdef CONFIG_TESTING_OPTIONS
  14 #include <net/ethernet.h>
  15 #include <netinet/ip.h>
  16 #endif /* CONFIG_TESTING_OPTIONS */
  17
  18 #include <sys/un.h>
  19 #include <sys/stat.h>
  20 #include <stddef.h>
  21
  22 #include "utils/common.h"
  23 #include "utils/eloop.h"
  24 #include "common/version.h"
  25 #include "common/ieee802_11_defs.h"
  26 #include "drivers/driver.h"
  27 #include "radius/radius_client.h"
  28 #include "radius/radius_server.h"
  29 #include "l2_packet/l2_packet.h"
  30 #include "ap/hostapd.h"
  31 #include "ap/ap_config.h"
  32 #include "ap/ieee802_1x.h"
  33 #include "ap/wpa_auth.h"
  34 #include "ap/ieee802_11.h"
  35 #include "ap/sta_info.h"
  36 #include "ap/wps_hostapd.h"
  37 #include "ap/ctrl_iface_ap.h"
  38 #include "ap/ap_drv_ops.h"
  39 #include "ap/hs20.h"
  40 #include "ap/wnm_ap.h"
  41 #include "ap/wpa_auth.h"
  42 #include "wps/wps_defs.h"
  43 #include "wps/wps.h"
  44 #include "config_file.h"
  45 #include "ctrl_iface.h"
  46
  47
  48 struct wpa_ctrl_dst {
  49         struct wpa_ctrl_dst *next;
  50         struct sockaddr_un addr;
  51         socklen_t addrlen;
  52         int debug_level;
  53         int errors;
  54 };
  55
  56
  57 static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
  58                                     const char *buf, size_t len);
  59
  60
  61 static int hostapd_ctrl_iface_attach(struct hostapd_data *hapd,
  62                                      struct sockaddr_un *from,
  63                                      socklen_t fromlen)
  64 {
  65         struct wpa_ctrl_dst *dst;
  66
  67         dst = os_zalloc(sizeof(*dst));
  68         if (dst == NULL)
  69                 return -1;
  70         os_memcpy(&dst->addr, from, sizeof(struct sockaddr_un));
  71         dst->addrlen = fromlen;
  72         dst->debug_level = MSG_INFO;
  73         dst->next = hapd->ctrl_dst;
  74         hapd->ctrl_dst = dst;
  75         wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor attached",
  76                     (u8 *) from->sun_path,
  77                     fromlen - offsetof(struct sockaddr_un, sun_path));
  78         return 0;
  79 }
  80
  81
  82 static int hostapd_ctrl_iface_detach(struct hostapd_data *hapd,
  83                                      struct sockaddr_un *from,
  84                                      socklen_t fromlen)
  85 {
  86         struct wpa_ctrl_dst *dst, *prev = NULL;
  87
  88         dst = hapd->ctrl_dst;
  89         while (dst) {
  90                 if (fromlen == dst->addrlen &&
  91                     os_memcmp(from->sun_path, dst->addr.sun_path,
  92                               fromlen - offsetof(struct sockaddr_un, sun_path))
  93                     == 0) {
  94                         wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor detached",
  95                                     (u8 *) from->sun_path,
  96                                     fromlen -
  97                                     offsetof(struct sockaddr_un, sun_path));
  98                         if (prev == NULL)
  99                                 hapd->ctrl_dst = dst->next;
 100                         else
 101                                 prev->next = dst->next;
 102                         os_free(dst);
 103                         return 0;
 104                 }
 105                 prev = dst;
 106                 dst = dst->next;
 107         }
 108         return -1;
 109 }
 110
 111
 112 static int hostapd_ctrl_iface_level(struct hostapd_data *hapd,
 113                                     struct sockaddr_un *from,
 114                                     socklen_t fromlen,
 115                                     char *level)
 116 {
 117         struct wpa_ctrl_dst *dst;
 118
 119         wpa_printf(MSG_DEBUG, "CTRL_IFACE LEVEL %s", level);
 120
 121         dst = hapd->ctrl_dst;
 122         while (dst) {
 123                 if (fromlen == dst->addrlen &&
 124                     os_memcmp(from->sun_path, dst->addr.sun_path,
 125                               fromlen - offsetof(struct sockaddr_un, sun_path))
 126                     == 0) {
 127                         wpa_hexdump(MSG_DEBUG, "CTRL_IFACE changed monitor "
 128                                     "level", (u8 *) from->sun_path, fromlen -
 129                                     offsetof(struct sockaddr_un, sun_path));
 130                         dst->debug_level = atoi(level);
 131                         return 0;
 132                 }
 133                 dst = dst->next;
 134         }
 135
 136         return -1;
 137 }
 138
 139
 140 static int hostapd_ctrl_iface_new_sta(struct hostapd_data *hapd,
 141                                       const char *txtaddr)
 142 {
 143         u8 addr[ETH_ALEN];
 144         struct sta_info *sta;
 145
 146         wpa_printf(MSG_DEBUG, "CTRL_IFACE NEW_STA %s", txtaddr);
 147
 148         if (hwaddr_aton(txtaddr, addr))
 149                 return -1;
 150
 151         sta = ap_get_sta(hapd, addr);
 152         if (sta)
 153                 return 0;
 154
 155         wpa_printf(MSG_DEBUG, "Add new STA " MACSTR " based on ctrl_iface "
 156                    "notification", MAC2STR(addr));
 157         sta = ap_sta_add(hapd, addr);
 158         if (sta == NULL)
 159                 return -1;
 160
 161         hostapd_new_assoc_sta(hapd, sta, 0);
 162         return 0;
 163 }
 164
 165
 166 #ifdef CONFIG_IEEE80211W
 167 #ifdef NEED_AP_MLME
 168 static int hostapd_ctrl_iface_sa_query(struct hostapd_data *hapd,
 169                                        const char *txtaddr)
 170 {
 171         u8 addr[ETH_ALEN];
 172         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 173
 174         wpa_printf(MSG_DEBUG, "CTRL_IFACE SA_QUERY %s", txtaddr);
 175
 176         if (hwaddr_aton(txtaddr, addr) ||
 177             os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0)
 178                 return -1;
 179
 180         ieee802_11_send_sa_query_req(hapd, addr, trans_id);
 181
 182         return 0;
 183 }
 184 #endif /* NEED_AP_MLME */
 185 #endif /* CONFIG_IEEE80211W */
 186
 187
 188 #ifdef CONFIG_WPS
 189 static int hostapd_ctrl_iface_wps_pin(struct hostapd_data *hapd, char *txt)
 190 {
 191         char *pin = os_strchr(txt, ' ');
 192         char *timeout_txt;
 193         int timeout;
 194         u8 addr_buf[ETH_ALEN], *addr = NULL;
 195         char *pos;
 196
 197         if (pin == NULL)
 198                 return -1;
 199         *pin++ = '\0';
 200
 201         timeout_txt = os_strchr(pin, ' ');
 202         if (timeout_txt) {
 203                 *timeout_txt++ = '\0';
 204                 timeout = atoi(timeout_txt);
 205                 pos = os_strchr(timeout_txt, ' ');
 206                 if (pos) {
 207                         *pos++ = '\0';
 208                         if (hwaddr_aton(pos, addr_buf) == 0)
 209                                 addr = addr_buf;
 210                 }
 211         } else
 212                 timeout = 0;
 213
 214         return hostapd_wps_add_pin(hapd, addr, txt, pin, timeout);
 215 }
 216
 217
 218 static int hostapd_ctrl_iface_wps_check_pin(
 219         struct hostapd_data *hapd, char *cmd, char *buf, size_t buflen)
 220 {
 221         char pin[9];
 222         size_t len;
 223         char *pos;
 224         int ret;
 225
 226         wpa_hexdump_ascii_key(MSG_DEBUG, "WPS_CHECK_PIN",
 227                               (u8 *) cmd, os_strlen(cmd));
 228         for (pos = cmd, len = 0; *pos != '\0'; pos++) {
 229                 if (*pos < '0' || *pos > '9')
 230                         continue;
 231                 pin[len++] = *pos;
 232                 if (len == 9) {
 233                         wpa_printf(MSG_DEBUG, "WPS: Too long PIN");
 234                         return -1;
 235                 }
 236         }
 237         if (len != 4 && len != 8) {
 238                 wpa_printf(MSG_DEBUG, "WPS: Invalid PIN length %d", (int) len);
 239                 return -1;
 240         }
 241         pin[len] = '\0';
 242
 243         if (len == 8) {
 244                 unsigned int pin_val;
 245                 pin_val = atoi(pin);
 246                 if (!wps_pin_valid(pin_val)) {
 247                         wpa_printf(MSG_DEBUG, "WPS: Invalid checksum digit");
 248                         ret = os_snprintf(buf, buflen, "FAIL-CHECKSUM\n");
 249                         if (ret < 0 || (size_t) ret >= buflen)
 250                                 return -1;
 251                         return ret;
 252                 }
 253         }
 254
 255         ret = os_snprintf(buf, buflen, "%s", pin);
 256         if (ret < 0 || (size_t) ret >= buflen)
 257                 return -1;
 258
 259         return ret;
 260 }
 261
 262
 263 #ifdef CONFIG_WPS_NFC
 264 static int hostapd_ctrl_iface_wps_nfc_tag_read(struct hostapd_data *hapd,
 265                                                char *pos)
 266 {
 267         size_t len;
 268         struct wpabuf *buf;
 269         int ret;
 270
 271         len = os_strlen(pos);
 272         if (len & 0x01)
 273                 return -1;
 274         len /= 2;
 275
 276         buf = wpabuf_alloc(len);
 277         if (buf == NULL)
 278                 return -1;
 279         if (hexstr2bin(pos, wpabuf_put(buf, len), len) < 0) {
 280                 wpabuf_free(buf);
 281                 return -1;
 282         }
 283
 284         ret = hostapd_wps_nfc_tag_read(hapd, buf);
 285         wpabuf_free(buf);
 286
 287         return ret;
 288 }
 289
 290
 291 static int hostapd_ctrl_iface_wps_nfc_config_token(struct hostapd_data *hapd,
 292                                                    char *cmd, char *reply,
 293                                                    size_t max_len)
 294 {
 295         int ndef;
 296         struct wpabuf *buf;
 297         int res;
 298
 299         if (os_strcmp(cmd, "WPS") == 0)
 300                 ndef = 0;
 301         else if (os_strcmp(cmd, "NDEF") == 0)
 302                 ndef = 1;
 303         else
 304                 return -1;
 305
 306         buf = hostapd_wps_nfc_config_token(hapd, ndef);
 307         if (buf == NULL)
 308                 return -1;
 309
 310         res = wpa_snprintf_hex_uppercase(reply, max_len, wpabuf_head(buf),
 311                                          wpabuf_len(buf));
 312         reply[res++] = '\n';
 313         reply[res] = '\0';
 314
 315         wpabuf_free(buf);
 316
 317         return res;
 318 }
 319
 320
 321 static int hostapd_ctrl_iface_wps_nfc_token_gen(struct hostapd_data *hapd,
 322                                                 char *reply, size_t max_len,
 323                                                 int ndef)
 324 {
 325         struct wpabuf *buf;
 326         int res;
 327
 328         buf = hostapd_wps_nfc_token_gen(hapd, ndef);
 329         if (buf == NULL)
 330                 return -1;
 331
 332         res = wpa_snprintf_hex_uppercase(reply, max_len, wpabuf_head(buf),
 333                                          wpabuf_len(buf));
 334         reply[res++] = '\n';
 335         reply[res] = '\0';
 336
 337         wpabuf_free(buf);
 338
 339         return res;
 340 }
 341
 342
 343 static int hostapd_ctrl_iface_wps_nfc_token(struct hostapd_data *hapd,
 344                                             char *cmd, char *reply,
 345                                             size_t max_len)
 346 {
 347         if (os_strcmp(cmd, "WPS") == 0)
 348                 return hostapd_ctrl_iface_wps_nfc_token_gen(hapd, reply,
 349                                                             max_len, 0);
 350
 351         if (os_strcmp(cmd, "NDEF") == 0)
 352                 return hostapd_ctrl_iface_wps_nfc_token_gen(hapd, reply,
 353                                                             max_len, 1);
 354
 355         if (os_strcmp(cmd, "enable") == 0)
 356                 return hostapd_wps_nfc_token_enable(hapd);
 357
 358         if (os_strcmp(cmd, "disable") == 0) {
 359                 hostapd_wps_nfc_token_disable(hapd);
 360                 return 0;
 361         }
 362
 363         return -1;
 364 }
 365
 366
 367 static int hostapd_ctrl_iface_nfc_get_handover_sel(struct hostapd_data *hapd,
 368                                                    char *cmd, char *reply,
 369                                                    size_t max_len)
 370 {
 371         struct wpabuf *buf;
 372         int res;
 373         char *pos;
 374         int ndef;
 375
 376         pos = os_strchr(cmd, ' ');
 377         if (pos == NULL)
 378                 return -1;
 379         *pos++ = '\0';
 380
 381         if (os_strcmp(cmd, "WPS") == 0)
 382                 ndef = 0;
 383         else if (os_strcmp(cmd, "NDEF") == 0)
 384                 ndef = 1;
 385         else
 386                 return -1;
 387
 388         if (os_strcmp(pos, "WPS-CR") == 0)
 389                 buf = hostapd_wps_nfc_hs_cr(hapd, ndef);
 390         else
 391                 buf = NULL;
 392         if (buf == NULL)
 393                 return -1;
 394
 395         res = wpa_snprintf_hex_uppercase(reply, max_len, wpabuf_head(buf),
 396                                          wpabuf_len(buf));
 397         reply[res++] = '\n';
 398         reply[res] = '\0';
 399
 400         wpabuf_free(buf);
 401
 402         return res;
 403 }
 404
 405
 406 static int hostapd_ctrl_iface_nfc_report_handover(struct hostapd_data *hapd,
 407                                                   char *cmd)
 408 {
 409         size_t len;
 410         struct wpabuf *req, *sel;
 411         int ret;
 412         char *pos, *role, *type, *pos2;
 413
 414         role = cmd;
 415         pos = os_strchr(role, ' ');
 416         if (pos == NULL)
 417                 return -1;
 418         *pos++ = '\0';
 419
 420         type = pos;
 421         pos = os_strchr(type, ' ');
 422         if (pos == NULL)
 423                 return -1;
 424         *pos++ = '\0';
 425
 426         pos2 = os_strchr(pos, ' ');
 427         if (pos2 == NULL)
 428                 return -1;
 429         *pos2++ = '\0';
 430
 431         len = os_strlen(pos);
 432         if (len & 0x01)
 433                 return -1;
 434         len /= 2;
 435
 436         req = wpabuf_alloc(len);
 437         if (req == NULL)
 438                 return -1;
 439         if (hexstr2bin(pos, wpabuf_put(req, len), len) < 0) {
 440                 wpabuf_free(req);
 441                 return -1;
 442         }
 443
 444         len = os_strlen(pos2);
 445         if (len & 0x01) {
 446                 wpabuf_free(req);
 447                 return -1;
 448         }
 449         len /= 2;
 450
 451         sel = wpabuf_alloc(len);
 452         if (sel == NULL) {
 453                 wpabuf_free(req);
 454                 return -1;
 455         }
 456         if (hexstr2bin(pos2, wpabuf_put(sel, len), len) < 0) {
 457                 wpabuf_free(req);
 458                 wpabuf_free(sel);
 459                 return -1;
 460         }
 461
 462         if (os_strcmp(role, "RESP") == 0 && os_strcmp(type, "WPS") == 0) {
 463                 ret = hostapd_wps_nfc_report_handover(hapd, req, sel);
 464         } else {
 465                 wpa_printf(MSG_DEBUG, "NFC: Unsupported connection handover "
 466                            "reported: role=%s type=%s", role, type);
 467                 ret = -1;
 468         }
 469         wpabuf_free(req);
 470         wpabuf_free(sel);
 471
 472         return ret;
 473 }
 474
 475 #endif /* CONFIG_WPS_NFC */
 476
 477
 478 static int hostapd_ctrl_iface_wps_ap_pin(struct hostapd_data *hapd, char *txt,
 479                                          char *buf, size_t buflen)
 480 {
 481         int timeout = 300;
 482         char *pos;
 483         const char *pin_txt;
 484
 485         pos = os_strchr(txt, ' ');
 486         if (pos)
 487                 *pos++ = '\0';
 488
 489         if (os_strcmp(txt, "disable") == 0) {
 490                 hostapd_wps_ap_pin_disable(hapd);
 491                 return os_snprintf(buf, buflen, "OK\n");
 492         }
 493
 494         if (os_strcmp(txt, "random") == 0) {
 495                 if (pos)
 496                         timeout = atoi(pos);
 497                 pin_txt = hostapd_wps_ap_pin_random(hapd, timeout);
 498                 if (pin_txt == NULL)
 499                         return -1;
 500                 return os_snprintf(buf, buflen, "%s", pin_txt);
 501         }
 502
 503         if (os_strcmp(txt, "get") == 0) {
 504                 pin_txt = hostapd_wps_ap_pin_get(hapd);
 505                 if (pin_txt == NULL)
 506                         return -1;
 507                 return os_snprintf(buf, buflen, "%s", pin_txt);
 508         }
 509
 510         if (os_strcmp(txt, "set") == 0) {
 511                 char *pin;
 512                 if (pos == NULL)
 513                         return -1;
 514                 pin = pos;
 515                 pos = os_strchr(pos, ' ');
 516                 if (pos) {
 517                         *pos++ = '\0';
 518                         timeout = atoi(pos);
 519                 }
 520                 if (os_strlen(pin) > buflen)
 521                         return -1;
 522                 if (hostapd_wps_ap_pin_set(hapd, pin, timeout) < 0)
 523                         return -1;
 524                 return os_snprintf(buf, buflen, "%s", pin);
 525         }
 526
 527         return -1;
 528 }
 529
 530
 531 static int hostapd_ctrl_iface_wps_config(struct hostapd_data *hapd, char *txt)
 532 {
 533         char *pos;
 534         char *ssid, *auth, *encr = NULL, *key = NULL;
 535
 536         ssid = txt;
 537         pos = os_strchr(txt, ' ');
 538         if (!pos)
 539                 return -1;
 540         *pos++ = '\0';
 541
 542         auth = pos;
 543         pos = os_strchr(pos, ' ');
 544         if (pos) {
 545                 *pos++ = '\0';
 546                 encr = pos;
 547                 pos = os_strchr(pos, ' ');
 548                 if (pos) {
 549                         *pos++ = '\0';
 550                         key = pos;
 551                 }
 552         }
 553
 554         return hostapd_wps_config_ap(hapd, ssid, auth, encr, key);
 555 }
 556
 557
 558 static const char * pbc_status_str(enum pbc_status status)
 559 {
 560         switch (status) {
 561         case WPS_PBC_STATUS_DISABLE:
 562                 return "Disabled";
 563         case WPS_PBC_STATUS_ACTIVE:
 564                 return "Active";
 565         case WPS_PBC_STATUS_TIMEOUT:
 566                 return "Timed-out";
 567         case WPS_PBC_STATUS_OVERLAP:
 568                 return "Overlap";
 569         default:
 570                 return "Unknown";
 571         }
 572 }
 573
 574
 575 static int hostapd_ctrl_iface_wps_get_status(struct hostapd_data *hapd,
 576                                              char *buf, size_t buflen)
 577 {
 578         int ret;
 579         char *pos, *end;
 580
 581         pos = buf;
 582         end = buf + buflen;
 583
 584         ret = os_snprintf(pos, end - pos, "PBC Status: %s\n",
 585                           pbc_status_str(hapd->wps_stats.pbc_status));
 586
 587         if (ret < 0 || ret >= end - pos)
 588                 return pos - buf;
 589         pos += ret;
 590
 591         ret = os_snprintf(pos, end - pos, "Last WPS result: %s\n",
 592                           (hapd->wps_stats.status == WPS_STATUS_SUCCESS ?
 593                            "Success":
 594                            (hapd->wps_stats.status == WPS_STATUS_FAILURE ?
 595                             "Failed" : "None")));
 596
 597         if (ret < 0 || ret >= end - pos)
 598                 return pos - buf;
 599         pos += ret;
 600
 601         /* If status == Failure - Add possible Reasons */
 602         if(hapd->wps_stats.status == WPS_STATUS_FAILURE &&
 603            hapd->wps_stats.failure_reason > 0) {
 604                 ret = os_snprintf(pos, end - pos,
 605                                   "Failure Reason: %s\n",
 606                                   wps_ei_str(hapd->wps_stats.failure_reason));
 607
 608                 if (ret < 0 || ret >= end - pos)
 609                         return pos - buf;
 610                 pos += ret;
 611         }
 612
 613         if (hapd->wps_stats.status) {
 614                 ret = os_snprintf(pos, end - pos, "Peer Address: " MACSTR "\n",
 615                                   MAC2STR(hapd->wps_stats.peer_addr));
 616
 617                 if (ret < 0 || ret >= end - pos)
 618                         return pos - buf;
 619                 pos += ret;
 620         }
 621
 622         return pos - buf;
 623 }
 624
 625 #endif /* CONFIG_WPS */
 626
 627 #ifdef CONFIG_HS20
 628
 629 static int hostapd_ctrl_iface_hs20_wnm_notif(struct hostapd_data *hapd,
 630                                              const char *cmd)
 631 {
 632         u8 addr[ETH_ALEN];
 633         const char *url;
 634
 635         if (hwaddr_aton(cmd, addr))
 636                 return -1;
 637         url = cmd + 17;
 638         if (*url == '\0') {
 639                 url = NULL;
 640         } else {
 641                 if (*url != ' ')
 642                         return -1;
 643                 url++;
 644                 if (*url == '\0')
 645                         url = NULL;
 646         }
 647
 648         return hs20_send_wnm_notification(hapd, addr, 1, url);
 649 }
 650
 651
 652 static int hostapd_ctrl_iface_hs20_deauth_req(struct hostapd_data *hapd,
 653                                               const char *cmd)
 654 {
 655         u8 addr[ETH_ALEN];
 656         int code, reauth_delay, ret;
 657         const char *pos;
 658         size_t url_len;
 659         struct wpabuf *req;
 660
 661         /* <STA MAC Addr> <Code(0/1)> <Re-auth-Delay(sec)> [URL] */
 662         if (hwaddr_aton(cmd, addr))
 663                 return -1;
 664
 665         pos = os_strchr(cmd, ' ');
 666         if (pos == NULL)
 667                 return -1;
 668         pos++;
 669         code = atoi(pos);
 670
 671         pos = os_strchr(pos, ' ');
 672         if (pos == NULL)
 673                 return -1;
 674         pos++;
 675         reauth_delay = atoi(pos);
 676
 677         url_len = 0;
 678         pos = os_strchr(pos, ' ');
 679         if (pos) {
 680                 pos++;
 681                 url_len = os_strlen(pos);
 682         }
 683
 684         req = wpabuf_alloc(4 + url_len);
 685         if (req == NULL)
 686                 return -1;
 687         wpabuf_put_u8(req, code);
 688         wpabuf_put_le16(req, reauth_delay);
 689         wpabuf_put_u8(req, url_len);
 690         if (pos)
 691                 wpabuf_put_data(req, pos, url_len);
 692
 693         wpa_printf(MSG_DEBUG, "HS 2.0: Send WNM-Notification to " MACSTR
 694                    " to indicate imminent deauthentication (code=%d "
 695                    "reauth_delay=%d)", MAC2STR(addr), code, reauth_delay);
 696         ret = hs20_send_wnm_notification_deauth_req(hapd, addr, req);
 697         wpabuf_free(req);
 698         return ret;
 699 }
 700
 701 #endif /* CONFIG_HS20 */
 702
 703
 704 #ifdef CONFIG_INTERWORKING
 705
 706 static int hostapd_ctrl_iface_set_qos_map_set(struct hostapd_data *hapd,
 707                                               const char *cmd)
 708 {
 709         u8 qos_map_set[16 + 2 * 21], count = 0;
 710         const char *pos = cmd;
 711         int val, ret;
 712
 713         for (;;) {
 714                 if (count == sizeof(qos_map_set)) {
 715                         wpa_printf(MSG_ERROR, "Too many qos_map_set parameters");
 716                         return -1;
 717                 }
 718
 719                 val = atoi(pos);
 720                 if (val < 0 || val > 255) {
 721                         wpa_printf(MSG_INFO, "Invalid QoS Map Set");
 722                         return -1;
 723                 }
 724
 725                 qos_map_set[count++] = val;
 726                 pos = os_strchr(pos, ',');
 727                 if (!pos)
 728                         break;
 729                 pos++;
 730         }
 731
 732         if (count < 16 || count & 1) {
 733                 wpa_printf(MSG_INFO, "Invalid QoS Map Set");
 734                 return -1;
 735         }
 736
 737         ret = hostapd_drv_set_qos_map(hapd, qos_map_set, count);
 738         if (ret) {
 739                 wpa_printf(MSG_INFO, "Failed to set QoS Map Set");
 740                 return -1;
 741         }
 742
 743         os_memcpy(hapd->conf->qos_map_set, qos_map_set, count);
 744         hapd->conf->qos_map_set_len = count;
 745
 746         return 0;
 747 }
 748
 749
 750 static int hostapd_ctrl_iface_send_qos_map_conf(struct hostapd_data *hapd,
 751                                                 const char *cmd)
 752 {
 753         u8 addr[ETH_ALEN];
 754         struct sta_info *sta;
 755         struct wpabuf *buf;
 756         u8 *qos_map_set = hapd->conf->qos_map_set;
 757         u8 qos_map_set_len = hapd->conf->qos_map_set_len;
 758         int ret;
 759
 760         if (!qos_map_set_len) {
 761                 wpa_printf(MSG_INFO, "QoS Map Set is not set");
 762                 return -1;
 763         }
 764
 765         if (hwaddr_aton(cmd, addr))
 766                 return -1;
 767
 768         sta = ap_get_sta(hapd, addr);
 769         if (sta == NULL) {
 770                 wpa_printf(MSG_DEBUG, "Station " MACSTR " not found "
 771                            "for QoS Map Configuration message",
 772                            MAC2STR(addr));
 773                 return -1;
 774         }
 775
 776         if (!sta->qos_map_enabled) {
 777                 wpa_printf(MSG_DEBUG, "Station " MACSTR " did not indicate "
 778                            "support for QoS Map", MAC2STR(addr));
 779                 return -1;
 780         }
 781
 782         buf = wpabuf_alloc(2 + 2 + qos_map_set_len);
 783         if (buf == NULL)
 784                 return -1;
 785
 786         wpabuf_put_u8(buf, WLAN_ACTION_QOS);
 787         wpabuf_put_u8(buf, QOS_QOS_MAP_CONFIG);
 788
 789         /* QoS Map Set Element */
 790         wpabuf_put_u8(buf, WLAN_EID_QOS_MAP_SET);
 791         wpabuf_put_u8(buf, qos_map_set_len);
 792         wpabuf_put_data(buf, qos_map_set, qos_map_set_len);
 793
 794         ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
 795                                       wpabuf_head(buf), wpabuf_len(buf));
 796         wpabuf_free(buf);
 797
 798         return ret;
 799 }
 800
 801 #endif /* CONFIG_INTERWORKING */
 802
 803
 804 #ifdef CONFIG_WNM
 805
 806 static int hostapd_ctrl_iface_disassoc_imminent(struct hostapd_data *hapd,
 807                                                 const char *cmd)
 808 {
 809         u8 addr[ETH_ALEN];
 810         int disassoc_timer;
 811         struct sta_info *sta;
 812
 813         if (hwaddr_aton(cmd, addr))
 814                 return -1;
 815         if (cmd[17] != ' ')
 816                 return -1;
 817         disassoc_timer = atoi(cmd + 17);
 818
 819         sta = ap_get_sta(hapd, addr);
 820         if (sta == NULL) {
 821                 wpa_printf(MSG_DEBUG, "Station " MACSTR
 822                            " not found for disassociation imminent message",
 823                            MAC2STR(addr));
 824                 return -1;
 825         }
 826
 827         return wnm_send_disassoc_imminent(hapd, sta, disassoc_timer);
 828 }
 829
 830
 831 static int hostapd_ctrl_iface_ess_disassoc(struct hostapd_data *hapd,
 832                                            const char *cmd)
 833 {
 834         u8 addr[ETH_ALEN];
 835         const char *url, *timerstr;
 836         int disassoc_timer;
 837         struct sta_info *sta;
 838
 839         if (hwaddr_aton(cmd, addr))
 840                 return -1;
 841
 842         sta = ap_get_sta(hapd, addr);
 843         if (sta == NULL) {
 844                 wpa_printf(MSG_DEBUG, "Station " MACSTR
 845                            " not found for ESS disassociation imminent message",
 846                            MAC2STR(addr));
 847                 return -1;
 848         }
 849
 850         timerstr = cmd + 17;
 851         if (*timerstr != ' ')
 852                 return -1;
 853         timerstr++;
 854         disassoc_timer = atoi(timerstr);
 855         if (disassoc_timer < 0 || disassoc_timer > 65535)
 856                 return -1;
 857
 858         url = os_strchr(timerstr, ' ');
 859         if (url == NULL)
 860                 return -1;
 861         url++;
 862
 863         return wnm_send_ess_disassoc_imminent(hapd, sta, url, disassoc_timer);
 864 }
 865
 866 #endif /* CONFIG_WNM */
 867
 868
 869 static int hostapd_ctrl_iface_get_config(struct hostapd_data *hapd,
 870                                          char *buf, size_t buflen)
 871 {
 872         int ret;
 873         char *pos, *end;
 874
 875         pos = buf;
 876         end = buf + buflen;
 877
 878         ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n"
 879                           "ssid=%s\n",
 880                           MAC2STR(hapd->own_addr),
 881                           wpa_ssid_txt(hapd->conf->ssid.ssid,
 882                                        hapd->conf->ssid.ssid_len));
 883         if (ret < 0 || ret >= end - pos)
 884                 return pos - buf;
 885         pos += ret;
 886
 887 #ifdef CONFIG_WPS
 888         ret = os_snprintf(pos, end - pos, "wps_state=%s\n",
 889                           hapd->conf->wps_state == 0 ? "disabled" :
 890                           (hapd->conf->wps_state == 1 ? "not configured" :
 891                            "configured"));
 892         if (ret < 0 || ret >= end - pos)
 893                 return pos - buf;
 894         pos += ret;
 895
 896         if (hapd->conf->wps_state && hapd->conf->wpa &&
 897             hapd->conf->ssid.wpa_passphrase) {
 898                 ret = os_snprintf(pos, end - pos, "passphrase=%s\n",
 899                                   hapd->conf->ssid.wpa_passphrase);
 900                 if (ret < 0 || ret >= end - pos)
 901                         return pos - buf;
 902                 pos += ret;
 903         }
 904
 905         if (hapd->conf->wps_state && hapd->conf->wpa &&
 906             hapd->conf->ssid.wpa_psk &&
 907             hapd->conf->ssid.wpa_psk->group) {
 908                 char hex[PMK_LEN * 2 + 1];
 909                 wpa_snprintf_hex(hex, sizeof(hex),
 910                                  hapd->conf->ssid.wpa_psk->psk, PMK_LEN);
 911                 ret = os_snprintf(pos, end - pos, "psk=%s\n", hex);
 912                 if (ret < 0 || ret >= end - pos)
 913                         return pos - buf;
 914                 pos += ret;
 915         }
 916 #endif /* CONFIG_WPS */
 917
 918         if (hapd->conf->wpa && hapd->conf->wpa_key_mgmt) {
 919                 ret = os_snprintf(pos, end - pos, "key_mgmt=");
 920                 if (ret < 0 || ret >= end - pos)
 921                         return pos - buf;
 922                 pos += ret;
 923
 924                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) {
 925                         ret = os_snprintf(pos, end - pos, "WPA-PSK ");
 926                         if (ret < 0 || ret >= end - pos)
 927                                 return pos - buf;
 928                         pos += ret;
 929                 }
 930                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 931                         ret = os_snprintf(pos, end - pos, "WPA-EAP ");
 932                         if (ret < 0 || ret >= end - pos)
 933                                 return pos - buf;
 934                         pos += ret;
 935                 }
 936 #ifdef CONFIG_IEEE80211R
 937                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 938                         ret = os_snprintf(pos, end - pos, "FT-PSK ");
 939                         if (ret < 0 || ret >= end - pos)
 940                                 return pos - buf;
 941                         pos += ret;
 942                 }
 943                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 944                         ret = os_snprintf(pos, end - pos, "FT-EAP ");
 945                         if (ret < 0 || ret >= end - pos)
 946                                 return pos - buf;
 947                         pos += ret;
 948                 }
 949 #ifdef CONFIG_SAE
 950                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_SAE) {
 951                         ret = os_snprintf(pos, end - pos, "FT-SAE ");
 952                         if (ret < 0 || ret >= end - pos)
 953                                 return pos - buf;
 954                         pos += ret;
 955                 }
 956 #endif /* CONFIG_SAE */
 957 #endif /* CONFIG_IEEE80211R */
 958 #ifdef CONFIG_IEEE80211W
 959                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 960                         ret = os_snprintf(pos, end - pos, "WPA-PSK-SHA256 ");
 961                         if (ret < 0 || ret >= end - pos)
 962                                 return pos - buf;
 963                         pos += ret;
 964                 }
 965                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 966                         ret = os_snprintf(pos, end - pos, "WPA-EAP-SHA256 ");
 967                         if (ret < 0 || ret >= end - pos)
 968                                 return pos - buf;
 969                         pos += ret;
 970                 }
 971 #endif /* CONFIG_IEEE80211W */
 972 #ifdef CONFIG_SAE
 973                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_SAE) {
 974                         ret = os_snprintf(pos, end - pos, "SAE ");
 975                         if (ret < 0 || ret >= end - pos)
 976                                 return pos - buf;
 977                         pos += ret;
 978                 }
 979 #endif /* CONFIG_SAE */
 980                 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
 981                         ret = os_snprintf(pos, end - pos, "WPA-EAP-SUITE-B ");
 982                         if (ret < 0 || ret >= end - pos)
 983                                 return pos - buf;
 984                         pos += ret;
 985                 }
 986
 987                 ret = os_snprintf(pos, end - pos, "\n");
 988                 if (ret < 0 || ret >= end - pos)
 989                         return pos - buf;
 990                 pos += ret;
 991         }
 992
 993         if (hapd->conf->wpa) {
 994                 ret = os_snprintf(pos, end - pos, "group_cipher=%s\n",
 995                                   wpa_cipher_txt(hapd->conf->wpa_group));
 996                 if (ret < 0 || ret >= end - pos)
 997                         return pos - buf;
 998                 pos += ret;
 999         }
1000
1001         if ((hapd->conf->wpa & WPA_PROTO_RSN) && hapd->conf->rsn_pairwise) {
1002                 ret = os_snprintf(pos, end - pos, "rsn_pairwise_cipher=");
1003                 if (ret < 0 || ret >= end - pos)
1004                         return pos - buf;
1005                 pos += ret;
1006
1007                 ret = wpa_write_ciphers(pos, end, hapd->conf->rsn_pairwise,
1008                                         " ");
1009                 if (ret < 0)
1010                         return pos - buf;
1011                 pos += ret;
1012
1013                 ret = os_snprintf(pos, end - pos, "\n");
1014                 if (ret < 0 || ret >= end - pos)
1015                         return pos - buf;
1016                 pos += ret;
1017         }
1018
1019         if ((hapd->conf->wpa & WPA_PROTO_WPA) && hapd->conf->wpa_pairwise) {
1020                 ret = os_snprintf(pos, end - pos, "wpa_pairwise_cipher=");
1021                 if (ret < 0 || ret >= end - pos)
1022                         return pos - buf;
1023                 pos += ret;
1024
1025                 ret = wpa_write_ciphers(pos, end, hapd->conf->wpa_pairwise,
1026                                         " ");
1027                 if (ret < 0)
1028                         return pos - buf;
1029                 pos += ret;
1030
1031                 ret = os_snprintf(pos, end - pos, "\n");
1032                 if (ret < 0 || ret >= end - pos)
1033                         return pos - buf;
1034                 pos += ret;
1035         }
1036
1037         return pos - buf;
1038 }
1039
1040
1041 static int hostapd_ctrl_iface_set(struct hostapd_data *hapd, char *cmd)
1042 {
1043         char *value;
1044         int ret = 0;
1045
1046         value = os_strchr(cmd, ' ');
1047         if (value == NULL)
1048                 return -1;
1049         *value++ = '\0';
1050
1051         wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
1052         if (0) {
1053 #ifdef CONFIG_WPS_TESTING
1054         } else if (os_strcasecmp(cmd, "wps_version_number") == 0) {
1055                 long int val;
1056                 val = strtol(value, NULL, 0);
1057                 if (val < 0 || val > 0xff) {
1058                         ret = -1;
1059                         wpa_printf(MSG_DEBUG, "WPS: Invalid "
1060                                    "wps_version_number %ld", val);
1061                 } else {
1062                         wps_version_number = val;
1063                         wpa_printf(MSG_DEBUG, "WPS: Testing - force WPS "
1064                                    "version %u.%u",
1065                                    (wps_version_number & 0xf0) >> 4,
1066                                    wps_version_number & 0x0f);
1067                         hostapd_wps_update_ie(hapd);
1068                 }
1069         } else if (os_strcasecmp(cmd, "wps_testing_dummy_cred") == 0) {
1070                 wps_testing_dummy_cred = atoi(value);
1071                 wpa_printf(MSG_DEBUG, "WPS: Testing - dummy_cred=%d",
1072                            wps_testing_dummy_cred);
1073         } else if (os_strcasecmp(cmd, "wps_corrupt_pkhash") == 0) {
1074                 wps_corrupt_pkhash = atoi(value);
1075                 wpa_printf(MSG_DEBUG, "WPS: Testing - wps_corrupt_pkhash=%d",
1076                            wps_corrupt_pkhash);
1077 #endif /* CONFIG_WPS_TESTING */
1078 #ifdef CONFIG_INTERWORKING
1079         } else if (os_strcasecmp(cmd, "gas_frag_limit") == 0) {
1080                 int val = atoi(value);
1081                 if (val <= 0)
1082                         ret = -1;
1083                 else
1084                         hapd->gas_frag_limit = val;
1085 #endif /* CONFIG_INTERWORKING */
1086 #ifdef CONFIG_TESTING_OPTIONS
1087         } else if (os_strcasecmp(cmd, "ext_mgmt_frame_handling") == 0) {
1088                 hapd->ext_mgmt_frame_handling = atoi(value);
1089         } else if (os_strcasecmp(cmd, "ext_eapol_frame_io") == 0) {
1090                 hapd->ext_eapol_frame_io = atoi(value);
1091 #endif /* CONFIG_TESTING_OPTIONS */
1092         } else {
1093                 struct sta_info *sta;
1094                 int vlan_id;
1095
1096                 ret = hostapd_set_iface(hapd->iconf, hapd->conf, cmd, value);
1097                 if (ret)
1098                         return ret;
1099
1100                 if (os_strcasecmp(cmd, "deny_mac_file") == 0) {
1101                         for (sta = hapd->sta_list; sta; sta = sta->next) {
1102                                 if (hostapd_maclist_found(
1103                                             hapd->conf->deny_mac,
1104                                             hapd->conf->num_deny_mac, sta->addr,
1105                                             &vlan_id) &&
1106                                     (!vlan_id || vlan_id == sta->vlan_id))
1107                                         ap_sta_disconnect(
1108                                                 hapd, sta, sta->addr,
1109                                                 WLAN_REASON_UNSPECIFIED);
1110                         }
1111                 } else if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED &&
1112                            os_strcasecmp(cmd, "accept_mac_file") == 0) {
1113                         for (sta = hapd->sta_list; sta; sta = sta->next) {
1114                                 if (!hostapd_maclist_found(
1115                                             hapd->conf->accept_mac,
1116                                             hapd->conf->num_accept_mac,
1117                                             sta->addr, &vlan_id) ||
1118                                     (vlan_id && vlan_id != sta->vlan_id))
1119                                         ap_sta_disconnect(
1120                                                 hapd, sta, sta->addr,
1121                                                 WLAN_REASON_UNSPECIFIED);
1122                         }
1123                 }
1124         }
1125
1126         return ret;
1127 }
1128
1129
1130 static int hostapd_ctrl_iface_get(struct hostapd_data *hapd, char *cmd,
1131                                   char *buf, size_t buflen)
1132 {
1133         int res;
1134
1135         wpa_printf(MSG_DEBUG, "CTRL_IFACE GET '%s'", cmd);
1136
1137         if (os_strcmp(cmd, "version") == 0) {
1138                 res = os_snprintf(buf, buflen, "%s", VERSION_STR);
1139                 if (res < 0 || (unsigned int) res >= buflen)
1140                         return -1;
1141                 return res;
1142         }
1143
1144         return -1;
1145 }
1146
1147
1148 static int hostapd_ctrl_iface_enable(struct hostapd_iface *iface)
1149 {
1150         if (hostapd_enable_iface(iface) < 0) {
1151                 wpa_printf(MSG_ERROR, "Enabling of interface failed");
1152                 return -1;
1153         }
1154         return 0;
1155 }
1156
1157
1158 static int hostapd_ctrl_iface_reload(struct hostapd_iface *iface)
1159 {
1160         if (hostapd_reload_iface(iface) < 0) {
1161                 wpa_printf(MSG_ERROR, "Reloading of interface failed");
1162                 return -1;
1163         }
1164         return 0;
1165 }
1166
1167
1168 static int hostapd_ctrl_iface_disable(struct hostapd_iface *iface)
1169 {
1170         if (hostapd_disable_iface(iface) < 0) {
1171                 wpa_printf(MSG_ERROR, "Disabling of interface failed");
1172                 return -1;
1173         }
1174         return 0;
1175 }
1176
1177
1178 #ifdef CONFIG_TESTING_OPTIONS
1179
1180 static int hostapd_ctrl_iface_radar(struct hostapd_data *hapd, char *cmd)
1181 {
1182         union wpa_event_data data;
1183         char *pos, *param;
1184         enum wpa_event_type event;
1185
1186         wpa_printf(MSG_DEBUG, "RADAR TEST: %s", cmd);
1187
1188         os_memset(&data, 0, sizeof(data));
1189
1190         param = os_strchr(cmd, ' ');
1191         if (param == NULL)
1192                 return -1;
1193         *param++ = '\0';
1194
1195         if (os_strcmp(cmd, "DETECTED") == 0)
1196                 event = EVENT_DFS_RADAR_DETECTED;
1197         else if (os_strcmp(cmd, "CAC-FINISHED") == 0)
1198                 event = EVENT_DFS_CAC_FINISHED;
1199         else if (os_strcmp(cmd, "CAC-ABORTED") == 0)
1200                 event = EVENT_DFS_CAC_ABORTED;
1201         else if (os_strcmp(cmd, "NOP-FINISHED") == 0)
1202                 event = EVENT_DFS_NOP_FINISHED;
1203         else {
1204                 wpa_printf(MSG_DEBUG, "Unsupported RADAR test command: %s",
1205                            cmd);
1206                 return -1;
1207         }
1208
1209         pos = os_strstr(param, "freq=");
1210         if (pos)
1211                 data.dfs_event.freq = atoi(pos + 5);
1212
1213         pos = os_strstr(param, "ht_enabled=1");
1214         if (pos)
1215                 data.dfs_event.ht_enabled = 1;
1216
1217         pos = os_strstr(param, "chan_offset=");
1218         if (pos)
1219                 data.dfs_event.chan_offset = atoi(pos + 12);
1220
1221         pos = os_strstr(param, "chan_width=");
1222         if (pos)
1223                 data.dfs_event.chan_width = atoi(pos + 11);
1224
1225         pos = os_strstr(param, "cf1=");
1226         if (pos)
1227                 data.dfs_event.cf1 = atoi(pos + 4);
1228
1229         pos = os_strstr(param, "cf2=");
1230         if (pos)
1231                 data.dfs_event.cf2 = atoi(pos + 4);
1232
1233         wpa_supplicant_event(hapd, event, &data);
1234
1235         return 0;
1236 }
1237
1238
1239 static int hostapd_ctrl_iface_mgmt_tx(struct hostapd_data *hapd, char *cmd)
1240 {
1241         size_t len;
1242         u8 *buf;
1243         int res;
1244
1245         wpa_printf(MSG_DEBUG, "External MGMT TX: %s", cmd);
1246
1247         len = os_strlen(cmd);
1248         if (len & 1)
1249                 return -1;
1250         len /= 2;
1251
1252         buf = os_malloc(len);
1253         if (buf == NULL)
1254                 return -1;
1255
1256         if (hexstr2bin(cmd, buf, len) < 0) {
1257                 os_free(buf);
1258                 return -1;
1259         }
1260
1261         res = hostapd_drv_send_mlme(hapd, buf, len, 0);
1262         os_free(buf);
1263         return res;
1264 }
1265
1266
1267 static int hostapd_ctrl_iface_eapol_rx(struct hostapd_data *hapd, char *cmd)
1268 {
1269         char *pos;
1270         u8 src[ETH_ALEN], *buf;
1271         int used;
1272         size_t len;
1273
1274         wpa_printf(MSG_DEBUG, "External EAPOL RX: %s", cmd);
1275
1276         pos = cmd;
1277         used = hwaddr_aton2(pos, src);
1278         if (used < 0)
1279                 return -1;
1280         pos += used;
1281         while (*pos == ' ')
1282                 pos++;
1283
1284         len = os_strlen(pos);
1285         if (len & 1)
1286                 return -1;
1287         len /= 2;
1288
1289         buf = os_malloc(len);
1290         if (buf == NULL)
1291                 return -1;
1292
1293         if (hexstr2bin(pos, buf, len) < 0) {
1294                 os_free(buf);
1295                 return -1;
1296         }
1297
1298         ieee802_1x_receive(hapd, src, buf, len);
1299         os_free(buf);
1300
1301         return 0;
1302 }
1303
1304
1305 static u16 ipv4_hdr_checksum(const void *buf, size_t len)
1306 {
1307         size_t i;
1308         u32 sum = 0;
1309         const u16 *pos = buf;
1310
1311         for (i = 0; i < len / 2; i++)
1312                 sum += *pos++;
1313
1314         while (sum >> 16)
1315                 sum = (sum & 0xffff) + (sum >> 16);
1316
1317         return sum ^ 0xffff;
1318 }
1319
1320
1321 #define HWSIM_PACKETLEN 1500
1322 #define HWSIM_IP_LEN (HWSIM_PACKETLEN - sizeof(struct ether_header))
1323
1324 void hostapd_data_test_rx(void *ctx, const u8 *src_addr, const u8 *buf,
1325                           size_t len)
1326 {
1327         struct hostapd_data *hapd = ctx;
1328         const struct ether_header *eth;
1329         const struct iphdr *ip;
1330         const u8 *pos;
1331         unsigned int i;
1332
1333         if (len != HWSIM_PACKETLEN)
1334                 return;
1335
1336         eth = (const struct ether_header *) buf;
1337         ip = (const struct iphdr *) (eth + 1);
1338         pos = (const u8 *) (ip + 1);
1339
1340         if (ip->ihl != 5 || ip->version != 4 ||
1341             ntohs(ip->tot_len) != HWSIM_IP_LEN)
1342                 return;
1343
1344         for (i = 0; i < HWSIM_IP_LEN - sizeof(*ip); i++) {
1345                 if (*pos != (u8) i)
1346                         return;
1347                 pos++;
1348         }
1349
1350         wpa_msg(hapd->msg_ctx, MSG_INFO, "DATA-TEST-RX " MACSTR " " MACSTR,
1351                 MAC2STR(eth->ether_dhost), MAC2STR(eth->ether_shost));
1352 }
1353
1354
1355 static int hostapd_ctrl_iface_data_test_config(struct hostapd_data *hapd,
1356                                                char *cmd)
1357 {
1358         int enabled = atoi(cmd);
1359
1360         if (!enabled) {
1361                 if (hapd->l2_test) {
1362                         l2_packet_deinit(hapd->l2_test);
1363                         hapd->l2_test = NULL;
1364                         wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1365                                 "test data: Disabled");
1366                 }
1367                 return 0;
1368         }
1369
1370         if (hapd->l2_test)
1371                 return 0;
1372
1373         hapd->l2_test = l2_packet_init(hapd->conf->iface, hapd->own_addr,
1374                                         ETHERTYPE_IP, hostapd_data_test_rx,
1375                                         hapd, 1);
1376         if (hapd->l2_test == NULL)
1377                 return -1;
1378
1379         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: Enabled");
1380
1381         return 0;
1382 }
1383
1384
1385 static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd)
1386 {
1387         u8 dst[ETH_ALEN], src[ETH_ALEN];
1388         char *pos;
1389         int used;
1390         long int val;
1391         u8 tos;
1392         u8 buf[HWSIM_PACKETLEN];
1393         struct ether_header *eth;
1394         struct iphdr *ip;
1395         u8 *dpos;
1396         unsigned int i;
1397
1398         if (hapd->l2_test == NULL)
1399                 return -1;
1400
1401         /* format: <dst> <src> <tos> */
1402
1403         pos = cmd;
1404         used = hwaddr_aton2(pos, dst);
1405         if (used < 0)
1406                 return -1;
1407         pos += used;
1408         while (*pos == ' ')
1409                 pos++;
1410         used = hwaddr_aton2(pos, src);
1411         if (used < 0)
1412                 return -1;
1413         pos += used;
1414
1415         val = strtol(pos, NULL, 0);
1416         if (val < 0 || val > 0xff)
1417                 return -1;
1418         tos = val;
1419
1420         eth = (struct ether_header *) buf;
1421         os_memcpy(eth->ether_dhost, dst, ETH_ALEN);
1422         os_memcpy(eth->ether_shost, src, ETH_ALEN);
1423         eth->ether_type = htons(ETHERTYPE_IP);
1424         ip = (struct iphdr *) (eth + 1);
1425         os_memset(ip, 0, sizeof(*ip));
1426         ip->ihl = 5;
1427         ip->version = 4;
1428         ip->ttl = 64;
1429         ip->tos = tos;
1430         ip->tot_len = htons(HWSIM_IP_LEN);
1431         ip->protocol = 1;
1432         ip->saddr = htonl(192 << 24 | 168 << 16 | 1 << 8 | 1);
1433         ip->daddr = htonl(192 << 24 | 168 << 16 | 1 << 8 | 2);
1434         ip->check = ipv4_hdr_checksum(ip, sizeof(*ip));
1435         dpos = (u8 *) (ip + 1);
1436         for (i = 0; i < HWSIM_IP_LEN - sizeof(*ip); i++)
1437                 *dpos++ = i;
1438
1439         if (l2_packet_send(hapd->l2_test, dst, ETHERTYPE_IP, buf,
1440                            HWSIM_PACKETLEN) < 0)
1441                 return -1;
1442
1443         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: TX dst=" MACSTR
1444                 " src=" MACSTR " tos=0x%x", MAC2STR(dst), MAC2STR(src), tos);
1445
1446         return 0;
1447 }
1448
1449 #endif /* CONFIG_TESTING_OPTIONS */
1450
1451
1452 static int hostapd_ctrl_iface_chan_switch(struct hostapd_iface *iface,
1453                                           char *pos)
1454 {
1455 #ifdef NEED_AP_MLME
1456         struct csa_settings settings;
1457         int ret;
1458         unsigned int i;
1459
1460         ret = hostapd_parse_csa_settings(pos, &settings);
1461         if (ret)
1462                 return ret;
1463
1464         for (i = 0; i < iface->num_bss; i++) {
1465                 ret = hostapd_switch_channel(iface->bss[i], &settings);
1466                 if (ret) {
1467                         /* FIX: What do we do if CSA fails in the middle of
1468                          * submitting multi-BSS CSA requests? */
1469                         return ret;
1470                 }
1471         }
1472
1473         return 0;
1474 #else /* NEED_AP_MLME */
1475         return -1;
1476 #endif /* NEED_AP_MLME */
1477 }
1478
1479
1480 static int hostapd_ctrl_iface_mib(struct hostapd_data *hapd, char *reply,
1481                                   int reply_size, const char *param)
1482 {
1483 #ifdef RADIUS_SERVER
1484         if (os_strcmp(param, "radius_server") == 0) {
1485                 return radius_server_get_mib(hapd->radius_srv, reply,
1486                                              reply_size);
1487         }
1488 #endif /* RADIUS_SERVER */
1489         return -1;
1490 }
1491
1492
1493 static int hostapd_ctrl_iface_vendor(struct hostapd_data *hapd, char *cmd,
1494                                      char *buf, size_t buflen)
1495 {
1496         int ret;
1497         char *pos;
1498         u8 *data = NULL;
1499         unsigned int vendor_id, subcmd;
1500         struct wpabuf *reply;
1501         size_t data_len = 0;
1502
1503         /* cmd: <vendor id> <subcommand id> [<hex formatted data>] */
1504         vendor_id = strtoul(cmd, &pos, 16);
1505         if (!isblank(*pos))
1506                 return -EINVAL;
1507
1508         subcmd = strtoul(pos, &pos, 10);
1509
1510         if (*pos != '\0') {
1511                 if (!isblank(*pos++))
1512                         return -EINVAL;
1513                 data_len = os_strlen(pos);
1514         }
1515
1516         if (data_len) {
1517                 data_len /= 2;
1518                 data = os_malloc(data_len);
1519                 if (!data)
1520                         return -ENOBUFS;
1521
1522                 if (hexstr2bin(pos, data, data_len)) {
1523                         wpa_printf(MSG_DEBUG,
1524                                    "Vendor command: wrong parameter format");
1525                         os_free(data);
1526                         return -EINVAL;
1527                 }
1528         }
1529
1530         reply = wpabuf_alloc((buflen - 1) / 2);
1531         if (!reply) {
1532                 os_free(data);
1533                 return -ENOBUFS;
1534         }
1535
1536         ret = hostapd_drv_vendor_cmd(hapd, vendor_id, subcmd, data, data_len,
1537                                      reply);
1538
1539         if (ret == 0)
1540                 ret = wpa_snprintf_hex(buf, buflen, wpabuf_head_u8(reply),
1541                                        wpabuf_len(reply));
1542
1543         wpabuf_free(reply);
1544         os_free(data);
1545
1546         return ret;
1547 }
1548
1549
1550 static void hostapd_ctrl_iface_receive(int sock, void *eloop_ctx,
1551                                        void *sock_ctx)
1552 {
1553         struct hostapd_data *hapd = eloop_ctx;
1554         char buf[4096];
1555         int res;
1556         struct sockaddr_un from;
1557         socklen_t fromlen = sizeof(from);
1558         char *reply;
1559         const int reply_size = 4096;
1560         int reply_len;
1561         int level = MSG_DEBUG;
1562
1563         res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
1564                        (struct sockaddr *) &from, &fromlen);
1565         if (res < 0) {
1566                 perror("recvfrom(ctrl_iface)");
1567                 return;
1568         }
1569         buf[res] = '\0';
1570         if (os_strcmp(buf, "PING") == 0)
1571                 level = MSG_EXCESSIVE;
1572         wpa_hexdump_ascii(level, "RX ctrl_iface", (u8 *) buf, res);
1573
1574         reply = os_malloc(reply_size);
1575         if (reply == NULL) {
1576                 if (sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from,
1577                            fromlen) < 0) {
1578                         wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s",
1579                                    strerror(errno));
1580                 }
1581                 return;
1582         }
1583
1584         os_memcpy(reply, "OK\n", 3);
1585         reply_len = 3;
1586
1587         if (os_strcmp(buf, "PING") == 0) {
1588                 os_memcpy(reply, "PONG\n", 5);
1589                 reply_len = 5;
1590         } else if (os_strncmp(buf, "RELOG", 5) == 0) {
1591                 if (wpa_debug_reopen_file() < 0)
1592                         reply_len = -1;
1593         } else if (os_strcmp(buf, "STATUS") == 0) {
1594                 reply_len = hostapd_ctrl_iface_status(hapd, reply,
1595                                                       reply_size);
1596         } else if (os_strcmp(buf, "STATUS-DRIVER") == 0) {
1597                 reply_len = hostapd_drv_status(hapd, reply, reply_size);
1598         } else if (os_strcmp(buf, "MIB") == 0) {
1599                 reply_len = ieee802_11_get_mib(hapd, reply, reply_size);
1600                 if (reply_len >= 0) {
1601                         res = wpa_get_mib(hapd->wpa_auth, reply + reply_len,
1602                                           reply_size - reply_len);
1603                         if (res < 0)
1604                                 reply_len = -1;
1605                         else
1606                                 reply_len += res;
1607                 }
1608                 if (reply_len >= 0) {
1609                         res = ieee802_1x_get_mib(hapd, reply + reply_len,
1610                                                  reply_size - reply_len);
1611                         if (res < 0)
1612                                 reply_len = -1;
1613                         else
1614                                 reply_len += res;
1615                 }
1616 #ifndef CONFIG_NO_RADIUS
1617                 if (reply_len >= 0) {
1618                         res = radius_client_get_mib(hapd->radius,
1619                                                     reply + reply_len,
1620                                                     reply_size - reply_len);
1621                         if (res < 0)
1622                                 reply_len = -1;
1623                         else
1624                                 reply_len += res;
1625                 }
1626 #endif /* CONFIG_NO_RADIUS */
1627         } else if (os_strncmp(buf, "MIB ", 4) == 0) {
1628                 reply_len = hostapd_ctrl_iface_mib(hapd, reply, reply_size,
1629                                                    buf + 4);
1630         } else if (os_strcmp(buf, "STA-FIRST") == 0) {
1631                 reply_len = hostapd_ctrl_iface_sta_first(hapd, reply,
1632                                                          reply_size);
1633         } else if (os_strncmp(buf, "STA ", 4) == 0) {
1634                 reply_len = hostapd_ctrl_iface_sta(hapd, buf + 4, reply,
1635                                                    reply_size);
1636         } else if (os_strncmp(buf, "STA-NEXT ", 9) == 0) {
1637                 reply_len = hostapd_ctrl_iface_sta_next(hapd, buf + 9, reply,
1638                                                         reply_size);
1639         } else if (os_strcmp(buf, "ATTACH") == 0) {
1640                 if (hostapd_ctrl_iface_attach(hapd, &from, fromlen))
1641                         reply_len = -1;
1642         } else if (os_strcmp(buf, "DETACH") == 0) {
1643                 if (hostapd_ctrl_iface_detach(hapd, &from, fromlen))
1644                         reply_len = -1;
1645         } else if (os_strncmp(buf, "LEVEL ", 6) == 0) {
1646                 if (hostapd_ctrl_iface_level(hapd, &from, fromlen,
1647                                                     buf + 6))
1648                         reply_len = -1;
1649         } else if (os_strncmp(buf, "NEW_STA ", 8) == 0) {
1650                 if (hostapd_ctrl_iface_new_sta(hapd, buf + 8))
1651                         reply_len = -1;
1652         } else if (os_strncmp(buf, "DEAUTHENTICATE ", 15) == 0) {
1653                 if (hostapd_ctrl_iface_deauthenticate(hapd, buf + 15))
1654                         reply_len = -1;
1655         } else if (os_strncmp(buf, "DISASSOCIATE ", 13) == 0) {
1656                 if (hostapd_ctrl_iface_disassociate(hapd, buf + 13))
1657                         reply_len = -1;
1658 #ifdef CONFIG_IEEE80211W
1659 #ifdef NEED_AP_MLME
1660         } else if (os_strncmp(buf, "SA_QUERY ", 9) == 0) {
1661                 if (hostapd_ctrl_iface_sa_query(hapd, buf + 9))
1662                         reply_len = -1;
1663 #endif /* NEED_AP_MLME */
1664 #endif /* CONFIG_IEEE80211W */
1665 #ifdef CONFIG_WPS
1666         } else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
1667                 if (hostapd_ctrl_iface_wps_pin(hapd, buf + 8))
1668                         reply_len = -1;
1669         } else if (os_strncmp(buf, "WPS_CHECK_PIN ", 14) == 0) {
1670                 reply_len = hostapd_ctrl_iface_wps_check_pin(
1671                         hapd, buf + 14, reply, reply_size);
1672         } else if (os_strcmp(buf, "WPS_PBC") == 0) {
1673                 if (hostapd_wps_button_pushed(hapd, NULL))
1674                         reply_len = -1;
1675         } else if (os_strcmp(buf, "WPS_CANCEL") == 0) {
1676                 if (hostapd_wps_cancel(hapd))
1677                         reply_len = -1;
1678         } else if (os_strncmp(buf, "WPS_AP_PIN ", 11) == 0) {
1679                 reply_len = hostapd_ctrl_iface_wps_ap_pin(hapd, buf + 11,
1680                                                           reply, reply_size);
1681         } else if (os_strncmp(buf, "WPS_CONFIG ", 11) == 0) {
1682                 if (hostapd_ctrl_iface_wps_config(hapd, buf + 11) < 0)
1683                         reply_len = -1;
1684         } else if (os_strncmp(buf, "WPS_GET_STATUS", 13) == 0) {
1685                 reply_len = hostapd_ctrl_iface_wps_get_status(hapd, reply,
1686                                                               reply_size);
1687 #ifdef CONFIG_WPS_NFC
1688         } else if (os_strncmp(buf, "WPS_NFC_TAG_READ ", 17) == 0) {
1689                 if (hostapd_ctrl_iface_wps_nfc_tag_read(hapd, buf + 17))
1690                         reply_len = -1;
1691         } else if (os_strncmp(buf, "WPS_NFC_CONFIG_TOKEN ", 21) == 0) {
1692                 reply_len = hostapd_ctrl_iface_wps_nfc_config_token(
1693                         hapd, buf + 21, reply, reply_size);
1694         } else if (os_strncmp(buf, "WPS_NFC_TOKEN ", 14) == 0) {
1695                 reply_len = hostapd_ctrl_iface_wps_nfc_token(
1696                         hapd, buf + 14, reply, reply_size);
1697         } else if (os_strncmp(buf, "NFC_GET_HANDOVER_SEL ", 21) == 0) {
1698                 reply_len = hostapd_ctrl_iface_nfc_get_handover_sel(
1699                         hapd, buf + 21, reply, reply_size);
1700         } else if (os_strncmp(buf, "NFC_REPORT_HANDOVER ", 20) == 0) {
1701                 if (hostapd_ctrl_iface_nfc_report_handover(hapd, buf + 20))
1702                         reply_len = -1;
1703 #endif /* CONFIG_WPS_NFC */
1704 #endif /* CONFIG_WPS */
1705 #ifdef CONFIG_INTERWORKING
1706         } else if (os_strncmp(buf, "SET_QOS_MAP_SET ", 16) == 0) {
1707                 if (hostapd_ctrl_iface_set_qos_map_set(hapd, buf + 16))
1708                         reply_len = -1;
1709         } else if (os_strncmp(buf, "SEND_QOS_MAP_CONF ", 18) == 0) {
1710                 if (hostapd_ctrl_iface_send_qos_map_conf(hapd, buf + 18))
1711                         reply_len = -1;
1712 #endif /* CONFIG_INTERWORKING */
1713 #ifdef CONFIG_HS20
1714         } else if (os_strncmp(buf, "HS20_WNM_NOTIF ", 15) == 0) {
1715                 if (hostapd_ctrl_iface_hs20_wnm_notif(hapd, buf + 15))
1716                         reply_len = -1;
1717         } else if (os_strncmp(buf, "HS20_DEAUTH_REQ ", 16) == 0) {
1718                 if (hostapd_ctrl_iface_hs20_deauth_req(hapd, buf + 16))
1719                         reply_len = -1;
1720 #endif /* CONFIG_HS20 */
1721 #ifdef CONFIG_WNM
1722         } else if (os_strncmp(buf, "DISASSOC_IMMINENT ", 18) == 0) {
1723                 if (hostapd_ctrl_iface_disassoc_imminent(hapd, buf + 18))
1724                         reply_len = -1;
1725         } else if (os_strncmp(buf, "ESS_DISASSOC ", 13) == 0) {
1726                 if (hostapd_ctrl_iface_ess_disassoc(hapd, buf + 13))
1727                         reply_len = -1;
1728 #endif /* CONFIG_WNM */
1729         } else if (os_strcmp(buf, "GET_CONFIG") == 0) {
1730                 reply_len = hostapd_ctrl_iface_get_config(hapd, reply,
1731                                                           reply_size);
1732         } else if (os_strncmp(buf, "SET ", 4) == 0) {
1733                 if (hostapd_ctrl_iface_set(hapd, buf + 4))
1734                         reply_len = -1;
1735         } else if (os_strncmp(buf, "GET ", 4) == 0) {
1736                 reply_len = hostapd_ctrl_iface_get(hapd, buf + 4, reply,
1737                                                    reply_size);
1738         } else if (os_strncmp(buf, "ENABLE", 6) == 0) {
1739                 if (hostapd_ctrl_iface_enable(hapd->iface))
1740                         reply_len = -1;
1741         } else if (os_strncmp(buf, "RELOAD", 6) == 0) {
1742                 if (hostapd_ctrl_iface_reload(hapd->iface))
1743                         reply_len = -1;
1744         } else if (os_strncmp(buf, "DISABLE", 7) == 0) {
1745                 if (hostapd_ctrl_iface_disable(hapd->iface))
1746                         reply_len = -1;
1747 #ifdef CONFIG_TESTING_OPTIONS
1748         } else if (os_strncmp(buf, "RADAR ", 6) == 0) {
1749                 if (hostapd_ctrl_iface_radar(hapd, buf + 6))
1750                         reply_len = -1;
1751         } else if (os_strncmp(buf, "MGMT_TX ", 8) == 0) {
1752                 if (hostapd_ctrl_iface_mgmt_tx(hapd, buf + 8))
1753                         reply_len = -1;
1754         } else if (os_strncmp(buf, "EAPOL_RX ", 9) == 0) {
1755                 if (hostapd_ctrl_iface_eapol_rx(hapd, buf + 9) < 0)
1756                         reply_len = -1;
1757         } else if (os_strncmp(buf, "DATA_TEST_CONFIG ", 17) == 0) {
1758                 if (hostapd_ctrl_iface_data_test_config(hapd, buf + 17) < 0)
1759                         reply_len = -1;
1760         } else if (os_strncmp(buf, "DATA_TEST_TX ", 13) == 0) {
1761                 if (hostapd_ctrl_iface_data_test_tx(hapd, buf + 13) < 0)
1762                         reply_len = -1;
1763 #endif /* CONFIG_TESTING_OPTIONS */
1764         } else if (os_strncmp(buf, "CHAN_SWITCH ", 12) == 0) {
1765                 if (hostapd_ctrl_iface_chan_switch(hapd->iface, buf + 12))
1766                         reply_len = -1;
1767         } else if (os_strncmp(buf, "VENDOR ", 7) == 0) {
1768                 reply_len = hostapd_ctrl_iface_vendor(hapd, buf + 7, reply,
1769                                                       reply_size);
1770
1771         } else {
1772                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1773                 reply_len = 16;
1774         }
1775
1776         if (reply_len < 0) {
1777                 os_memcpy(reply, "FAIL\n", 5);
1778                 reply_len = 5;
1779         }
1780         if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
1781                    fromlen) < 0) {
1782                 wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s",
1783                            strerror(errno));
1784         }
1785         os_free(reply);
1786 }
1787
1788
1789 static char * hostapd_ctrl_iface_path(struct hostapd_data *hapd)
1790 {
1791         char *buf;
1792         size_t len;
1793
1794         if (hapd->conf->ctrl_interface == NULL)
1795                 return NULL;
1796
1797         len = os_strlen(hapd->conf->ctrl_interface) +
1798                 os_strlen(hapd->conf->iface) + 2;
1799         buf = os_malloc(len);
1800         if (buf == NULL)
1801                 return NULL;
1802
1803         os_snprintf(buf, len, "%s/%s",
1804                     hapd->conf->ctrl_interface, hapd->conf->iface);
1805         buf[len - 1] = '\0';
1806         return buf;
1807 }
1808
1809
1810 static void hostapd_ctrl_iface_msg_cb(void *ctx, int level, int global,
1811                                       const char *txt, size_t len)
1812 {
1813         struct hostapd_data *hapd = ctx;
1814         if (hapd == NULL)
1815                 return;
1816         hostapd_ctrl_iface_send(hapd, level, txt, len);
1817 }
1818
1819
1820 int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
1821 {
1822         struct sockaddr_un addr;
1823         int s = -1;
1824         char *fname = NULL;
1825
1826         if (hapd->ctrl_sock > -1) {
1827                 wpa_printf(MSG_DEBUG, "ctrl_iface already exists!");
1828                 return 0;
1829         }
1830
1831         if (hapd->conf->ctrl_interface == NULL)
1832                 return 0;
1833
1834         if (mkdir(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
1835                 if (errno == EEXIST) {
1836                         wpa_printf(MSG_DEBUG, "Using existing control "
1837                                    "interface directory.");
1838                 } else {
1839                         perror("mkdir[ctrl_interface]");
1840                         goto fail;
1841                 }
1842         }
1843
1844         if (hapd->conf->ctrl_interface_gid_set &&
1845             chown(hapd->conf->ctrl_interface, -1,
1846                   hapd->conf->ctrl_interface_gid) < 0) {
1847                 perror("chown[ctrl_interface]");
1848                 return -1;
1849         }
1850
1851         if (!hapd->conf->ctrl_interface_gid_set &&
1852             hapd->iface->interfaces->ctrl_iface_group &&
1853             chown(hapd->conf->ctrl_interface, -1,
1854                   hapd->iface->interfaces->ctrl_iface_group) < 0) {
1855                 perror("chown[ctrl_interface]");
1856                 return -1;
1857         }
1858
1859 #ifdef ANDROID
1860         /*
1861          * Android is using umask 0077 which would leave the control interface
1862          * directory without group access. This breaks things since Wi-Fi
1863          * framework assumes that this directory can be accessed by other
1864          * applications in the wifi group. Fix this by adding group access even
1865          * if umask value would prevent this.
1866          */
1867         if (chmod(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
1868                 wpa_printf(MSG_ERROR, "CTRL: Could not chmod directory: %s",
1869                            strerror(errno));
1870                 /* Try to continue anyway */
1871         }
1872 #endif /* ANDROID */
1873
1874         if (os_strlen(hapd->conf->ctrl_interface) + 1 +
1875             os_strlen(hapd->conf->iface) >= sizeof(addr.sun_path))
1876                 goto fail;
1877
1878         s = socket(PF_UNIX, SOCK_DGRAM, 0);
1879         if (s < 0) {
1880                 perror("socket(PF_UNIX)");
1881                 goto fail;
1882         }
1883
1884         os_memset(&addr, 0, sizeof(addr));
1885 #ifdef __FreeBSD__
1886         addr.sun_len = sizeof(addr);
1887 #endif /* __FreeBSD__ */
1888         addr.sun_family = AF_UNIX;
1889         fname = hostapd_ctrl_iface_path(hapd);
1890         if (fname == NULL)
1891                 goto fail;
1892         os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
1893         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1894                 wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
1895                            strerror(errno));
1896                 if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1897                         wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
1898                                    " allow connections - assuming it was left"
1899                                    "over from forced program termination");
1900                         if (unlink(fname) < 0) {
1901                                 perror("unlink[ctrl_iface]");
1902                                 wpa_printf(MSG_ERROR, "Could not unlink "
1903                                            "existing ctrl_iface socket '%s'",
1904                                            fname);
1905                                 goto fail;
1906                         }
1907                         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
1908                             0) {
1909                                 perror("hostapd-ctrl-iface: bind(PF_UNIX)");
1910                                 goto fail;
1911                         }
1912                         wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
1913                                    "ctrl_iface socket '%s'", fname);
1914                 } else {
1915                         wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
1916                                    "be in use - cannot override it");
1917                         wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
1918                                    "not used anymore", fname);
1919                         os_free(fname);
1920                         fname = NULL;
1921                         goto fail;
1922                 }
1923         }
1924
1925         if (hapd->conf->ctrl_interface_gid_set &&
1926             chown(fname, -1, hapd->conf->ctrl_interface_gid) < 0) {
1927                 perror("chown[ctrl_interface/ifname]");
1928                 goto fail;
1929         }
1930
1931         if (!hapd->conf->ctrl_interface_gid_set &&
1932             hapd->iface->interfaces->ctrl_iface_group &&
1933             chown(fname, -1, hapd->iface->interfaces->ctrl_iface_group) < 0) {
1934                 perror("chown[ctrl_interface/ifname]");
1935                 goto fail;
1936         }
1937
1938         if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
1939                 perror("chmod[ctrl_interface/ifname]");
1940                 goto fail;
1941         }
1942         os_free(fname);
1943
1944         hapd->ctrl_sock = s;
1945         eloop_register_read_sock(s, hostapd_ctrl_iface_receive, hapd,
1946                                  NULL);
1947         hapd->msg_ctx = hapd;
1948         wpa_msg_register_cb(hostapd_ctrl_iface_msg_cb);
1949
1950         return 0;
1951
1952 fail:
1953         if (s >= 0)
1954                 close(s);
1955         if (fname) {
1956                 unlink(fname);
1957                 os_free(fname);
1958         }
1959         return -1;
1960 }
1961
1962
1963 void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
1964 {
1965         struct wpa_ctrl_dst *dst, *prev;
1966
1967         if (hapd->ctrl_sock > -1) {
1968                 char *fname;
1969                 eloop_unregister_read_sock(hapd->ctrl_sock);
1970                 close(hapd->ctrl_sock);
1971                 hapd->ctrl_sock = -1;
1972                 fname = hostapd_ctrl_iface_path(hapd);
1973                 if (fname)
1974                         unlink(fname);
1975                 os_free(fname);
1976
1977                 if (hapd->conf->ctrl_interface &&
1978                     rmdir(hapd->conf->ctrl_interface) < 0) {
1979                         if (errno == ENOTEMPTY) {
1980                                 wpa_printf(MSG_DEBUG, "Control interface "
1981                                            "directory not empty - leaving it "
1982                                            "behind");
1983                         } else {
1984                                 wpa_printf(MSG_ERROR,
1985                                            "rmdir[ctrl_interface=%s]: %s",
1986                                            hapd->conf->ctrl_interface,
1987                                            strerror(errno));
1988                         }
1989                 }
1990         }
1991
1992         dst = hapd->ctrl_dst;
1993         while (dst) {
1994                 prev = dst;
1995                 dst = dst->next;
1996                 os_free(prev);
1997         }
1998
1999 #ifdef CONFIG_TESTING_OPTIONS
2000         l2_packet_deinit(hapd->l2_test);
2001         hapd->l2_test = NULL;
2002 #endif /* CONFIG_TESTING_OPTIONS */
2003 }
2004
2005
2006 static int hostapd_ctrl_iface_add(struct hapd_interfaces *interfaces,
2007                                   char *buf)
2008 {
2009         if (hostapd_add_iface(interfaces, buf) < 0) {
2010                 wpa_printf(MSG_ERROR, "Adding interface %s failed", buf);
2011                 return -1;
2012         }
2013         return 0;
2014 }
2015
2016
2017 static int hostapd_ctrl_iface_remove(struct hapd_interfaces *interfaces,
2018                                      char *buf)
2019 {
2020         if (hostapd_remove_iface(interfaces, buf) < 0) {
2021                 wpa_printf(MSG_ERROR, "Removing interface %s failed", buf);
2022                 return -1;
2023         }
2024         return 0;
2025 }
2026
2027
2028 static void hostapd_ctrl_iface_flush(struct hapd_interfaces *interfaces)
2029 {
2030 #ifdef CONFIG_WPS_TESTING
2031         wps_version_number = 0x20;
2032         wps_testing_dummy_cred = 0;
2033         wps_corrupt_pkhash = 0;
2034 #endif /* CONFIG_WPS_TESTING */
2035 }
2036
2037
2038 static void hostapd_global_ctrl_iface_receive(int sock, void *eloop_ctx,
2039                                               void *sock_ctx)
2040 {
2041         void *interfaces = eloop_ctx;
2042         char buf[256];
2043         int res;
2044         struct sockaddr_un from;
2045         socklen_t fromlen = sizeof(from);
2046         char reply[24];
2047         int reply_len;
2048
2049         res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
2050                        (struct sockaddr *) &from, &fromlen);
2051         if (res < 0) {
2052                 perror("recvfrom(ctrl_iface)");
2053                 return;
2054         }
2055         buf[res] = '\0';
2056         wpa_printf(MSG_DEBUG, "Global ctrl_iface command: %s", buf);
2057
2058         os_memcpy(reply, "OK\n", 3);
2059         reply_len = 3;
2060
2061         if (os_strcmp(buf, "PING") == 0) {
2062                 os_memcpy(reply, "PONG\n", 5);
2063                 reply_len = 5;
2064         } else if (os_strncmp(buf, "RELOG", 5) == 0) {
2065                 if (wpa_debug_reopen_file() < 0)
2066                         reply_len = -1;
2067         } else if (os_strcmp(buf, "FLUSH") == 0) {
2068                 hostapd_ctrl_iface_flush(interfaces);
2069         } else if (os_strncmp(buf, "ADD ", 4) == 0) {
2070                 if (hostapd_ctrl_iface_add(interfaces, buf + 4) < 0)
2071                         reply_len = -1;
2072         } else if (os_strncmp(buf, "REMOVE ", 7) == 0) {
2073                 if (hostapd_ctrl_iface_remove(interfaces, buf + 7) < 0)
2074                         reply_len = -1;
2075 #ifdef CONFIG_MODULE_TESTS
2076         } else if (os_strcmp(buf, "MODULE_TESTS") == 0) {
2077                 int hapd_module_tests(void);
2078                 if (hapd_module_tests() < 0)
2079                         reply_len = -1;
2080 #endif /* CONFIG_MODULE_TESTS */
2081         } else {
2082                 wpa_printf(MSG_DEBUG, "Unrecognized global ctrl_iface command "
2083                            "ignored");
2084                 reply_len = -1;
2085         }
2086
2087         if (reply_len < 0) {
2088                 os_memcpy(reply, "FAIL\n", 5);
2089                 reply_len = 5;
2090         }
2091
2092         if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
2093                    fromlen) < 0) {
2094                 wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s",
2095                            strerror(errno));
2096         }
2097 }
2098
2099
2100 static char * hostapd_global_ctrl_iface_path(struct hapd_interfaces *interface)
2101 {
2102         char *buf;
2103         size_t len;
2104
2105         if (interface->global_iface_path == NULL)
2106                 return NULL;
2107
2108         len = os_strlen(interface->global_iface_path) +
2109                 os_strlen(interface->global_iface_name) + 2;
2110         buf = os_malloc(len);
2111         if (buf == NULL)
2112                 return NULL;
2113
2114         os_snprintf(buf, len, "%s/%s", interface->global_iface_path,
2115                     interface->global_iface_name);
2116         buf[len - 1] = '\0';
2117         return buf;
2118 }
2119
2120
2121 int hostapd_global_ctrl_iface_init(struct hapd_interfaces *interface)
2122 {
2123         struct sockaddr_un addr;
2124         int s = -1;
2125         char *fname = NULL;
2126
2127         if (interface->global_iface_path == NULL) {
2128                 wpa_printf(MSG_DEBUG, "ctrl_iface not configured!");
2129                 return 0;
2130         }
2131
2132         if (mkdir(interface->global_iface_path, S_IRWXU | S_IRWXG) < 0) {
2133                 if (errno == EEXIST) {
2134                         wpa_printf(MSG_DEBUG, "Using existing control "
2135                                    "interface directory.");
2136                 } else {
2137                         perror("mkdir[ctrl_interface]");
2138                         goto fail;
2139                 }
2140         } else if (interface->ctrl_iface_group &&
2141                    chown(interface->global_iface_path, -1,
2142                          interface->ctrl_iface_group) < 0) {
2143                 perror("chown[ctrl_interface]");
2144                 goto fail;
2145         }
2146
2147         if (os_strlen(interface->global_iface_path) + 1 +
2148             os_strlen(interface->global_iface_name) >= sizeof(addr.sun_path))
2149                 goto fail;
2150
2151         s = socket(PF_UNIX, SOCK_DGRAM, 0);
2152         if (s < 0) {
2153                 perror("socket(PF_UNIX)");
2154                 goto fail;
2155         }
2156
2157         os_memset(&addr, 0, sizeof(addr));
2158 #ifdef __FreeBSD__
2159         addr.sun_len = sizeof(addr);
2160 #endif /* __FreeBSD__ */
2161         addr.sun_family = AF_UNIX;
2162         fname = hostapd_global_ctrl_iface_path(interface);
2163         if (fname == NULL)
2164                 goto fail;
2165         os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
2166         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2167                 wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
2168                            strerror(errno));
2169                 if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2170                         wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
2171                                    " allow connections - assuming it was left"
2172                                    "over from forced program termination");
2173                         if (unlink(fname) < 0) {
2174                                 perror("unlink[ctrl_iface]");
2175                                 wpa_printf(MSG_ERROR, "Could not unlink "
2176                                            "existing ctrl_iface socket '%s'",
2177                                            fname);
2178                                 goto fail;
2179                         }
2180                         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
2181                             0) {
2182                                 perror("bind(PF_UNIX)");
2183                                 goto fail;
2184                         }
2185                         wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
2186                                    "ctrl_iface socket '%s'", fname);
2187                 } else {
2188                         wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
2189                                    "be in use - cannot override it");
2190                         wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
2191                                    "not used anymore", fname);
2192                         os_free(fname);
2193                         fname = NULL;
2194                         goto fail;
2195                 }
2196         }
2197
2198         if (interface->ctrl_iface_group &&
2199             chown(fname, -1, interface->ctrl_iface_group) < 0) {
2200                 perror("chown[ctrl_interface]");
2201                 goto fail;
2202         }
2203
2204         if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
2205                 perror("chmod[ctrl_interface/ifname]");
2206                 goto fail;
2207         }
2208         os_free(fname);
2209
2210         interface->global_ctrl_sock = s;
2211         eloop_register_read_sock(s, hostapd_global_ctrl_iface_receive,
2212                                  interface, NULL);
2213
2214         return 0;
2215
2216 fail:
2217         if (s >= 0)
2218                 close(s);
2219         if (fname) {
2220                 unlink(fname);
2221                 os_free(fname);
2222         }
2223         return -1;
2224 }
2225
2226
2227 void hostapd_global_ctrl_iface_deinit(struct hapd_interfaces *interfaces)
2228 {
2229         char *fname = NULL;
2230
2231         if (interfaces->global_ctrl_sock > -1) {
2232                 eloop_unregister_read_sock(interfaces->global_ctrl_sock);
2233                 close(interfaces->global_ctrl_sock);
2234                 interfaces->global_ctrl_sock = -1;
2235                 fname = hostapd_global_ctrl_iface_path(interfaces);
2236                 if (fname) {
2237                         unlink(fname);
2238                         os_free(fname);
2239                 }
2240
2241                 if (interfaces->global_iface_path &&
2242                     rmdir(interfaces->global_iface_path) < 0) {
2243                         if (errno == ENOTEMPTY) {
2244                                 wpa_printf(MSG_DEBUG, "Control interface "
2245                                            "directory not empty - leaving it "
2246                                            "behind");
2247                         } else {
2248                                 wpa_printf(MSG_ERROR,
2249                                            "rmdir[ctrl_interface=%s]: %s",
2250                                            interfaces->global_iface_path,
2251                                            strerror(errno));
2252                         }
2253                 }
2254                 os_free(interfaces->global_iface_path);
2255                 interfaces->global_iface_path = NULL;
2256         }
2257 }
2258
2259
2260 static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
2261                                     const char *buf, size_t len)
2262 {
2263         struct wpa_ctrl_dst *dst, *next;
2264         struct msghdr msg;
2265         int idx;
2266         struct iovec io[2];
2267         char levelstr[10];
2268
2269         dst = hapd->ctrl_dst;
2270         if (hapd->ctrl_sock < 0 || dst == NULL)
2271                 return;
2272
2273         os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
2274         io[0].iov_base = levelstr;
2275         io[0].iov_len = os_strlen(levelstr);
2276         io[1].iov_base = (char *) buf;
2277         io[1].iov_len = len;
2278         os_memset(&msg, 0, sizeof(msg));
2279         msg.msg_iov = io;
2280         msg.msg_iovlen = 2;
2281
2282         idx = 0;
2283         while (dst) {
2284                 next = dst->next;
2285                 if (level >= dst->debug_level) {
2286                         wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor send",
2287                                     (u8 *) dst->addr.sun_path, dst->addrlen -
2288                                     offsetof(struct sockaddr_un, sun_path));
2289                         msg.msg_name = &dst->addr;
2290                         msg.msg_namelen = dst->addrlen;
2291                         if (sendmsg(hapd->ctrl_sock, &msg, 0) < 0) {
2292                                 int _errno = errno;
2293                                 wpa_printf(MSG_INFO, "CTRL_IFACE monitor[%d]: "
2294                                            "%d - %s",
2295                                            idx, errno, strerror(errno));
2296                                 dst->errors++;
2297                                 if (dst->errors > 10 || _errno == ENOENT) {
2298                                         hostapd_ctrl_iface_detach(
2299                                                 hapd, &dst->addr,
2300                                                 dst->addrlen);
2301                                 }
2302                         } else
2303                                 dst->errors = 0;
2304                 }
2305                 idx++;
2306                 dst = next;
2307         }
2308 }
2309
2310 #endif /* CONFIG_NATIVE_WINDOWS */