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
 981                 ret = os_snprintf(pos, end - pos, "\n");
 982                 if (ret < 0 || ret >= end - pos)
 983                         return pos - buf;
 984                 pos += ret;
 985         }
 986
 987         if (hapd->conf->wpa) {
 988                 ret = os_snprintf(pos, end - pos, "group_cipher=%s\n",
 989                                   wpa_cipher_txt(hapd->conf->wpa_group));
 990                 if (ret < 0 || ret >= end - pos)
 991                         return pos - buf;
 992                 pos += ret;
 993         }
 994
 995         if ((hapd->conf->wpa & WPA_PROTO_RSN) && hapd->conf->rsn_pairwise) {
 996                 ret = os_snprintf(pos, end - pos, "rsn_pairwise_cipher=");
 997                 if (ret < 0 || ret >= end - pos)
 998                         return pos - buf;
 999                 pos += ret;
1000
1001                 ret = wpa_write_ciphers(pos, end, hapd->conf->rsn_pairwise,
1002                                         " ");
1003                 if (ret < 0)
1004                         return pos - buf;
1005                 pos += ret;
1006
1007                 ret = os_snprintf(pos, end - pos, "\n");
1008                 if (ret < 0 || ret >= end - pos)
1009                         return pos - buf;
1010                 pos += ret;
1011         }
1012
1013         if ((hapd->conf->wpa & WPA_PROTO_WPA) && hapd->conf->wpa_pairwise) {
1014                 ret = os_snprintf(pos, end - pos, "wpa_pairwise_cipher=");
1015                 if (ret < 0 || ret >= end - pos)
1016                         return pos - buf;
1017                 pos += ret;
1018
1019                 ret = wpa_write_ciphers(pos, end, hapd->conf->wpa_pairwise,
1020                                         " ");
1021                 if (ret < 0)
1022                         return pos - buf;
1023                 pos += ret;
1024
1025                 ret = os_snprintf(pos, end - pos, "\n");
1026                 if (ret < 0 || ret >= end - pos)
1027                         return pos - buf;
1028                 pos += ret;
1029         }
1030
1031         return pos - buf;
1032 }
1033
1034
1035 static int hostapd_ctrl_iface_set(struct hostapd_data *hapd, char *cmd)
1036 {
1037         char *value;
1038         int ret = 0;
1039
1040         value = os_strchr(cmd, ' ');
1041         if (value == NULL)
1042                 return -1;
1043         *value++ = '\0';
1044
1045         wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
1046         if (0) {
1047 #ifdef CONFIG_WPS_TESTING
1048         } else if (os_strcasecmp(cmd, "wps_version_number") == 0) {
1049                 long int val;
1050                 val = strtol(value, NULL, 0);
1051                 if (val < 0 || val > 0xff) {
1052                         ret = -1;
1053                         wpa_printf(MSG_DEBUG, "WPS: Invalid "
1054                                    "wps_version_number %ld", val);
1055                 } else {
1056                         wps_version_number = val;
1057                         wpa_printf(MSG_DEBUG, "WPS: Testing - force WPS "
1058                                    "version %u.%u",
1059                                    (wps_version_number & 0xf0) >> 4,
1060                                    wps_version_number & 0x0f);
1061                         hostapd_wps_update_ie(hapd);
1062                 }
1063         } else if (os_strcasecmp(cmd, "wps_testing_dummy_cred") == 0) {
1064                 wps_testing_dummy_cred = atoi(value);
1065                 wpa_printf(MSG_DEBUG, "WPS: Testing - dummy_cred=%d",
1066                            wps_testing_dummy_cred);
1067         } else if (os_strcasecmp(cmd, "wps_corrupt_pkhash") == 0) {
1068                 wps_corrupt_pkhash = atoi(value);
1069                 wpa_printf(MSG_DEBUG, "WPS: Testing - wps_corrupt_pkhash=%d",
1070                            wps_corrupt_pkhash);
1071 #endif /* CONFIG_WPS_TESTING */
1072 #ifdef CONFIG_INTERWORKING
1073         } else if (os_strcasecmp(cmd, "gas_frag_limit") == 0) {
1074                 int val = atoi(value);
1075                 if (val <= 0)
1076                         ret = -1;
1077                 else
1078                         hapd->gas_frag_limit = val;
1079 #endif /* CONFIG_INTERWORKING */
1080 #ifdef CONFIG_TESTING_OPTIONS
1081         } else if (os_strcasecmp(cmd, "ext_mgmt_frame_handling") == 0) {
1082                 hapd->ext_mgmt_frame_handling = atoi(value);
1083         } else if (os_strcasecmp(cmd, "ext_eapol_frame_io") == 0) {
1084                 hapd->ext_eapol_frame_io = atoi(value);
1085 #endif /* CONFIG_TESTING_OPTIONS */
1086         } else {
1087                 struct sta_info *sta;
1088                 int vlan_id;
1089
1090                 ret = hostapd_set_iface(hapd->iconf, hapd->conf, cmd, value);
1091                 if (ret)
1092                         return ret;
1093
1094                 if (os_strcasecmp(cmd, "deny_mac_file") == 0) {
1095                         for (sta = hapd->sta_list; sta; sta = sta->next) {
1096                                 if (hostapd_maclist_found(
1097                                             hapd->conf->deny_mac,
1098                                             hapd->conf->num_deny_mac, sta->addr,
1099                                             &vlan_id) &&
1100                                     (!vlan_id || vlan_id == sta->vlan_id))
1101                                         ap_sta_disconnect(
1102                                                 hapd, sta, sta->addr,
1103                                                 WLAN_REASON_UNSPECIFIED);
1104                         }
1105                 } else if (hapd->conf->macaddr_acl == DENY_UNLESS_ACCEPTED &&
1106                            os_strcasecmp(cmd, "accept_mac_file") == 0) {
1107                         for (sta = hapd->sta_list; sta; sta = sta->next) {
1108                                 if (!hostapd_maclist_found(
1109                                             hapd->conf->accept_mac,
1110                                             hapd->conf->num_accept_mac,
1111                                             sta->addr, &vlan_id) ||
1112                                     (vlan_id && vlan_id != sta->vlan_id))
1113                                         ap_sta_disconnect(
1114                                                 hapd, sta, sta->addr,
1115                                                 WLAN_REASON_UNSPECIFIED);
1116                         }
1117                 }
1118         }
1119
1120         return ret;
1121 }
1122
1123
1124 static int hostapd_ctrl_iface_get(struct hostapd_data *hapd, char *cmd,
1125                                   char *buf, size_t buflen)
1126 {
1127         int res;
1128
1129         wpa_printf(MSG_DEBUG, "CTRL_IFACE GET '%s'", cmd);
1130
1131         if (os_strcmp(cmd, "version") == 0) {
1132                 res = os_snprintf(buf, buflen, "%s", VERSION_STR);
1133                 if (res < 0 || (unsigned int) res >= buflen)
1134                         return -1;
1135                 return res;
1136         }
1137
1138         return -1;
1139 }
1140
1141
1142 static int hostapd_ctrl_iface_enable(struct hostapd_iface *iface)
1143 {
1144         if (hostapd_enable_iface(iface) < 0) {
1145                 wpa_printf(MSG_ERROR, "Enabling of interface failed");
1146                 return -1;
1147         }
1148         return 0;
1149 }
1150
1151
1152 static int hostapd_ctrl_iface_reload(struct hostapd_iface *iface)
1153 {
1154         if (hostapd_reload_iface(iface) < 0) {
1155                 wpa_printf(MSG_ERROR, "Reloading of interface failed");
1156                 return -1;
1157         }
1158         return 0;
1159 }
1160
1161
1162 static int hostapd_ctrl_iface_disable(struct hostapd_iface *iface)
1163 {
1164         if (hostapd_disable_iface(iface) < 0) {
1165                 wpa_printf(MSG_ERROR, "Disabling of interface failed");
1166                 return -1;
1167         }
1168         return 0;
1169 }
1170
1171
1172 #ifdef CONFIG_TESTING_OPTIONS
1173
1174 static int hostapd_ctrl_iface_radar(struct hostapd_data *hapd, char *cmd)
1175 {
1176         union wpa_event_data data;
1177         char *pos, *param;
1178         enum wpa_event_type event;
1179
1180         wpa_printf(MSG_DEBUG, "RADAR TEST: %s", cmd);
1181
1182         os_memset(&data, 0, sizeof(data));
1183
1184         param = os_strchr(cmd, ' ');
1185         if (param == NULL)
1186                 return -1;
1187         *param++ = '\0';
1188
1189         if (os_strcmp(cmd, "DETECTED") == 0)
1190                 event = EVENT_DFS_RADAR_DETECTED;
1191         else if (os_strcmp(cmd, "CAC-FINISHED") == 0)
1192                 event = EVENT_DFS_CAC_FINISHED;
1193         else if (os_strcmp(cmd, "CAC-ABORTED") == 0)
1194                 event = EVENT_DFS_CAC_ABORTED;
1195         else if (os_strcmp(cmd, "NOP-FINISHED") == 0)
1196                 event = EVENT_DFS_NOP_FINISHED;
1197         else {
1198                 wpa_printf(MSG_DEBUG, "Unsupported RADAR test command: %s",
1199                            cmd);
1200                 return -1;
1201         }
1202
1203         pos = os_strstr(param, "freq=");
1204         if (pos)
1205                 data.dfs_event.freq = atoi(pos + 5);
1206
1207         pos = os_strstr(param, "ht_enabled=1");
1208         if (pos)
1209                 data.dfs_event.ht_enabled = 1;
1210
1211         pos = os_strstr(param, "chan_offset=");
1212         if (pos)
1213                 data.dfs_event.chan_offset = atoi(pos + 12);
1214
1215         pos = os_strstr(param, "chan_width=");
1216         if (pos)
1217                 data.dfs_event.chan_width = atoi(pos + 11);
1218
1219         pos = os_strstr(param, "cf1=");
1220         if (pos)
1221                 data.dfs_event.cf1 = atoi(pos + 4);
1222
1223         pos = os_strstr(param, "cf2=");
1224         if (pos)
1225                 data.dfs_event.cf2 = atoi(pos + 4);
1226
1227         wpa_supplicant_event(hapd, event, &data);
1228
1229         return 0;
1230 }
1231
1232
1233 static int hostapd_ctrl_iface_mgmt_tx(struct hostapd_data *hapd, char *cmd)
1234 {
1235         size_t len;
1236         u8 *buf;
1237         int res;
1238
1239         wpa_printf(MSG_DEBUG, "External MGMT TX: %s", cmd);
1240
1241         len = os_strlen(cmd);
1242         if (len & 1)
1243                 return -1;
1244         len /= 2;
1245
1246         buf = os_malloc(len);
1247         if (buf == NULL)
1248                 return -1;
1249
1250         if (hexstr2bin(cmd, buf, len) < 0) {
1251                 os_free(buf);
1252                 return -1;
1253         }
1254
1255         res = hostapd_drv_send_mlme(hapd, buf, len, 0);
1256         os_free(buf);
1257         return res;
1258 }
1259
1260
1261 static int hostapd_ctrl_iface_eapol_rx(struct hostapd_data *hapd, char *cmd)
1262 {
1263         char *pos;
1264         u8 src[ETH_ALEN], *buf;
1265         int used;
1266         size_t len;
1267
1268         wpa_printf(MSG_DEBUG, "External EAPOL RX: %s", cmd);
1269
1270         pos = cmd;
1271         used = hwaddr_aton2(pos, src);
1272         if (used < 0)
1273                 return -1;
1274         pos += used;
1275         while (*pos == ' ')
1276                 pos++;
1277
1278         len = os_strlen(pos);
1279         if (len & 1)
1280                 return -1;
1281         len /= 2;
1282
1283         buf = os_malloc(len);
1284         if (buf == NULL)
1285                 return -1;
1286
1287         if (hexstr2bin(pos, buf, len) < 0) {
1288                 os_free(buf);
1289                 return -1;
1290         }
1291
1292         ieee802_1x_receive(hapd, src, buf, len);
1293         os_free(buf);
1294
1295         return 0;
1296 }
1297
1298
1299 static u16 ipv4_hdr_checksum(const void *buf, size_t len)
1300 {
1301         size_t i;
1302         u32 sum = 0;
1303         const u16 *pos = buf;
1304
1305         for (i = 0; i < len / 2; i++)
1306                 sum += *pos++;
1307
1308         while (sum >> 16)
1309                 sum = (sum & 0xffff) + (sum >> 16);
1310
1311         return sum ^ 0xffff;
1312 }
1313
1314
1315 #define HWSIM_PACKETLEN 1500
1316 #define HWSIM_IP_LEN (HWSIM_PACKETLEN - sizeof(struct ether_header))
1317
1318 void hostapd_data_test_rx(void *ctx, const u8 *src_addr, const u8 *buf,
1319                           size_t len)
1320 {
1321         struct hostapd_data *hapd = ctx;
1322         const struct ether_header *eth;
1323         const struct iphdr *ip;
1324         const u8 *pos;
1325         unsigned int i;
1326
1327         if (len != HWSIM_PACKETLEN)
1328                 return;
1329
1330         eth = (const struct ether_header *) buf;
1331         ip = (const struct iphdr *) (eth + 1);
1332         pos = (const u8 *) (ip + 1);
1333
1334         if (ip->ihl != 5 || ip->version != 4 ||
1335             ntohs(ip->tot_len) != HWSIM_IP_LEN)
1336                 return;
1337
1338         for (i = 0; i < HWSIM_IP_LEN - sizeof(*ip); i++) {
1339                 if (*pos != (u8) i)
1340                         return;
1341                 pos++;
1342         }
1343
1344         wpa_msg(hapd->msg_ctx, MSG_INFO, "DATA-TEST-RX " MACSTR " " MACSTR,
1345                 MAC2STR(eth->ether_dhost), MAC2STR(eth->ether_shost));
1346 }
1347
1348
1349 static int hostapd_ctrl_iface_data_test_config(struct hostapd_data *hapd,
1350                                                char *cmd)
1351 {
1352         int enabled = atoi(cmd);
1353
1354         if (!enabled) {
1355                 if (hapd->l2_test) {
1356                         l2_packet_deinit(hapd->l2_test);
1357                         hapd->l2_test = NULL;
1358                         wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
1359                                 "test data: Disabled");
1360                 }
1361                 return 0;
1362         }
1363
1364         if (hapd->l2_test)
1365                 return 0;
1366
1367         hapd->l2_test = l2_packet_init(hapd->conf->iface, hapd->own_addr,
1368                                         ETHERTYPE_IP, hostapd_data_test_rx,
1369                                         hapd, 1);
1370         if (hapd->l2_test == NULL)
1371                 return -1;
1372
1373         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: Enabled");
1374
1375         return 0;
1376 }
1377
1378
1379 static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd)
1380 {
1381         u8 dst[ETH_ALEN], src[ETH_ALEN];
1382         char *pos;
1383         int used;
1384         long int val;
1385         u8 tos;
1386         u8 buf[HWSIM_PACKETLEN];
1387         struct ether_header *eth;
1388         struct iphdr *ip;
1389         u8 *dpos;
1390         unsigned int i;
1391
1392         if (hapd->l2_test == NULL)
1393                 return -1;
1394
1395         /* format: <dst> <src> <tos> */
1396
1397         pos = cmd;
1398         used = hwaddr_aton2(pos, dst);
1399         if (used < 0)
1400                 return -1;
1401         pos += used;
1402         while (*pos == ' ')
1403                 pos++;
1404         used = hwaddr_aton2(pos, src);
1405         if (used < 0)
1406                 return -1;
1407         pos += used;
1408
1409         val = strtol(pos, NULL, 0);
1410         if (val < 0 || val > 0xff)
1411                 return -1;
1412         tos = val;
1413
1414         eth = (struct ether_header *) buf;
1415         os_memcpy(eth->ether_dhost, dst, ETH_ALEN);
1416         os_memcpy(eth->ether_shost, src, ETH_ALEN);
1417         eth->ether_type = htons(ETHERTYPE_IP);
1418         ip = (struct iphdr *) (eth + 1);
1419         os_memset(ip, 0, sizeof(*ip));
1420         ip->ihl = 5;
1421         ip->version = 4;
1422         ip->ttl = 64;
1423         ip->tos = tos;
1424         ip->tot_len = htons(HWSIM_IP_LEN);
1425         ip->protocol = 1;
1426         ip->saddr = htonl(192 << 24 | 168 << 16 | 1 << 8 | 1);
1427         ip->daddr = htonl(192 << 24 | 168 << 16 | 1 << 8 | 2);
1428         ip->check = ipv4_hdr_checksum(ip, sizeof(*ip));
1429         dpos = (u8 *) (ip + 1);
1430         for (i = 0; i < HWSIM_IP_LEN - sizeof(*ip); i++)
1431                 *dpos++ = i;
1432
1433         if (l2_packet_send(hapd->l2_test, dst, ETHERTYPE_IP, buf,
1434                            HWSIM_PACKETLEN) < 0)
1435                 return -1;
1436
1437         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: TX dst=" MACSTR
1438                 " src=" MACSTR " tos=0x%x", MAC2STR(dst), MAC2STR(src), tos);
1439
1440         return 0;
1441 }
1442
1443 #endif /* CONFIG_TESTING_OPTIONS */
1444
1445
1446 static int hostapd_ctrl_iface_chan_switch(struct hostapd_iface *iface,
1447                                           char *pos)
1448 {
1449 #ifdef NEED_AP_MLME
1450         struct csa_settings settings;
1451         int ret;
1452         unsigned int i;
1453
1454         ret = hostapd_parse_csa_settings(pos, &settings);
1455         if (ret)
1456                 return ret;
1457
1458         for (i = 0; i < iface->num_bss; i++) {
1459                 ret = hostapd_switch_channel(iface->bss[i], &settings);
1460                 if (ret) {
1461                         /* FIX: What do we do if CSA fails in the middle of
1462                          * submitting multi-BSS CSA requests? */
1463                         return ret;
1464                 }
1465         }
1466
1467         return 0;
1468 #else /* NEED_AP_MLME */
1469         return -1;
1470 #endif /* NEED_AP_MLME */
1471 }
1472
1473
1474 static int hostapd_ctrl_iface_mib(struct hostapd_data *hapd, char *reply,
1475                                   int reply_size, const char *param)
1476 {
1477 #ifdef RADIUS_SERVER
1478         if (os_strcmp(param, "radius_server") == 0) {
1479                 return radius_server_get_mib(hapd->radius_srv, reply,
1480                                              reply_size);
1481         }
1482 #endif /* RADIUS_SERVER */
1483         return -1;
1484 }
1485
1486
1487 static int hostapd_ctrl_iface_vendor(struct hostapd_data *hapd, char *cmd,
1488                                      char *buf, size_t buflen)
1489 {
1490         int ret;
1491         char *pos;
1492         u8 *data = NULL;
1493         unsigned int vendor_id, subcmd;
1494         struct wpabuf *reply;
1495         size_t data_len = 0;
1496
1497         /* cmd: <vendor id> <subcommand id> [<hex formatted data>] */
1498         vendor_id = strtoul(cmd, &pos, 16);
1499         if (!isblank(*pos))
1500                 return -EINVAL;
1501
1502         subcmd = strtoul(pos, &pos, 10);
1503
1504         if (*pos != '\0') {
1505                 if (!isblank(*pos++))
1506                         return -EINVAL;
1507                 data_len = os_strlen(pos);
1508         }
1509
1510         if (data_len) {
1511                 data_len /= 2;
1512                 data = os_malloc(data_len);
1513                 if (!data)
1514                         return -ENOBUFS;
1515
1516                 if (hexstr2bin(pos, data, data_len)) {
1517                         wpa_printf(MSG_DEBUG,
1518                                    "Vendor command: wrong parameter format");
1519                         os_free(data);
1520                         return -EINVAL;
1521                 }
1522         }
1523
1524         reply = wpabuf_alloc((buflen - 1) / 2);
1525         if (!reply) {
1526                 os_free(data);
1527                 return -ENOBUFS;
1528         }
1529
1530         ret = hostapd_drv_vendor_cmd(hapd, vendor_id, subcmd, data, data_len,
1531                                      reply);
1532
1533         if (ret == 0)
1534                 ret = wpa_snprintf_hex(buf, buflen, wpabuf_head_u8(reply),
1535                                        wpabuf_len(reply));
1536
1537         wpabuf_free(reply);
1538         os_free(data);
1539
1540         return ret;
1541 }
1542
1543
1544 static void hostapd_ctrl_iface_receive(int sock, void *eloop_ctx,
1545                                        void *sock_ctx)
1546 {
1547         struct hostapd_data *hapd = eloop_ctx;
1548         char buf[4096];
1549         int res;
1550         struct sockaddr_un from;
1551         socklen_t fromlen = sizeof(from);
1552         char *reply;
1553         const int reply_size = 4096;
1554         int reply_len;
1555         int level = MSG_DEBUG;
1556
1557         res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
1558                        (struct sockaddr *) &from, &fromlen);
1559         if (res < 0) {
1560                 perror("recvfrom(ctrl_iface)");
1561                 return;
1562         }
1563         buf[res] = '\0';
1564         if (os_strcmp(buf, "PING") == 0)
1565                 level = MSG_EXCESSIVE;
1566         wpa_hexdump_ascii(level, "RX ctrl_iface", (u8 *) buf, res);
1567
1568         reply = os_malloc(reply_size);
1569         if (reply == NULL) {
1570                 if (sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from,
1571                            fromlen) < 0) {
1572                         wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s",
1573                                    strerror(errno));
1574                 }
1575                 return;
1576         }
1577
1578         os_memcpy(reply, "OK\n", 3);
1579         reply_len = 3;
1580
1581         if (os_strcmp(buf, "PING") == 0) {
1582                 os_memcpy(reply, "PONG\n", 5);
1583                 reply_len = 5;
1584         } else if (os_strncmp(buf, "RELOG", 5) == 0) {
1585                 if (wpa_debug_reopen_file() < 0)
1586                         reply_len = -1;
1587         } else if (os_strcmp(buf, "STATUS") == 0) {
1588                 reply_len = hostapd_ctrl_iface_status(hapd, reply,
1589                                                       reply_size);
1590         } else if (os_strcmp(buf, "STATUS-DRIVER") == 0) {
1591                 reply_len = hostapd_drv_status(hapd, reply, reply_size);
1592         } else if (os_strcmp(buf, "MIB") == 0) {
1593                 reply_len = ieee802_11_get_mib(hapd, reply, reply_size);
1594                 if (reply_len >= 0) {
1595                         res = wpa_get_mib(hapd->wpa_auth, reply + reply_len,
1596                                           reply_size - reply_len);
1597                         if (res < 0)
1598                                 reply_len = -1;
1599                         else
1600                                 reply_len += res;
1601                 }
1602                 if (reply_len >= 0) {
1603                         res = ieee802_1x_get_mib(hapd, reply + reply_len,
1604                                                  reply_size - reply_len);
1605                         if (res < 0)
1606                                 reply_len = -1;
1607                         else
1608                                 reply_len += res;
1609                 }
1610 #ifndef CONFIG_NO_RADIUS
1611                 if (reply_len >= 0) {
1612                         res = radius_client_get_mib(hapd->radius,
1613                                                     reply + reply_len,
1614                                                     reply_size - reply_len);
1615                         if (res < 0)
1616                                 reply_len = -1;
1617                         else
1618                                 reply_len += res;
1619                 }
1620 #endif /* CONFIG_NO_RADIUS */
1621         } else if (os_strncmp(buf, "MIB ", 4) == 0) {
1622                 reply_len = hostapd_ctrl_iface_mib(hapd, reply, reply_size,
1623                                                    buf + 4);
1624         } else if (os_strcmp(buf, "STA-FIRST") == 0) {
1625                 reply_len = hostapd_ctrl_iface_sta_first(hapd, reply,
1626                                                          reply_size);
1627         } else if (os_strncmp(buf, "STA ", 4) == 0) {
1628                 reply_len = hostapd_ctrl_iface_sta(hapd, buf + 4, reply,
1629                                                    reply_size);
1630         } else if (os_strncmp(buf, "STA-NEXT ", 9) == 0) {
1631                 reply_len = hostapd_ctrl_iface_sta_next(hapd, buf + 9, reply,
1632                                                         reply_size);
1633         } else if (os_strcmp(buf, "ATTACH") == 0) {
1634                 if (hostapd_ctrl_iface_attach(hapd, &from, fromlen))
1635                         reply_len = -1;
1636         } else if (os_strcmp(buf, "DETACH") == 0) {
1637                 if (hostapd_ctrl_iface_detach(hapd, &from, fromlen))
1638                         reply_len = -1;
1639         } else if (os_strncmp(buf, "LEVEL ", 6) == 0) {
1640                 if (hostapd_ctrl_iface_level(hapd, &from, fromlen,
1641                                                     buf + 6))
1642                         reply_len = -1;
1643         } else if (os_strncmp(buf, "NEW_STA ", 8) == 0) {
1644                 if (hostapd_ctrl_iface_new_sta(hapd, buf + 8))
1645                         reply_len = -1;
1646         } else if (os_strncmp(buf, "DEAUTHENTICATE ", 15) == 0) {
1647                 if (hostapd_ctrl_iface_deauthenticate(hapd, buf + 15))
1648                         reply_len = -1;
1649         } else if (os_strncmp(buf, "DISASSOCIATE ", 13) == 0) {
1650                 if (hostapd_ctrl_iface_disassociate(hapd, buf + 13))
1651                         reply_len = -1;
1652 #ifdef CONFIG_IEEE80211W
1653 #ifdef NEED_AP_MLME
1654         } else if (os_strncmp(buf, "SA_QUERY ", 9) == 0) {
1655                 if (hostapd_ctrl_iface_sa_query(hapd, buf + 9))
1656                         reply_len = -1;
1657 #endif /* NEED_AP_MLME */
1658 #endif /* CONFIG_IEEE80211W */
1659 #ifdef CONFIG_WPS
1660         } else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
1661                 if (hostapd_ctrl_iface_wps_pin(hapd, buf + 8))
1662                         reply_len = -1;
1663         } else if (os_strncmp(buf, "WPS_CHECK_PIN ", 14) == 0) {
1664                 reply_len = hostapd_ctrl_iface_wps_check_pin(
1665                         hapd, buf + 14, reply, reply_size);
1666         } else if (os_strcmp(buf, "WPS_PBC") == 0) {
1667                 if (hostapd_wps_button_pushed(hapd, NULL))
1668                         reply_len = -1;
1669         } else if (os_strcmp(buf, "WPS_CANCEL") == 0) {
1670                 if (hostapd_wps_cancel(hapd))
1671                         reply_len = -1;
1672         } else if (os_strncmp(buf, "WPS_AP_PIN ", 11) == 0) {
1673                 reply_len = hostapd_ctrl_iface_wps_ap_pin(hapd, buf + 11,
1674                                                           reply, reply_size);
1675         } else if (os_strncmp(buf, "WPS_CONFIG ", 11) == 0) {
1676                 if (hostapd_ctrl_iface_wps_config(hapd, buf + 11) < 0)
1677                         reply_len = -1;
1678         } else if (os_strncmp(buf, "WPS_GET_STATUS", 13) == 0) {
1679                 reply_len = hostapd_ctrl_iface_wps_get_status(hapd, reply,
1680                                                               reply_size);
1681 #ifdef CONFIG_WPS_NFC
1682         } else if (os_strncmp(buf, "WPS_NFC_TAG_READ ", 17) == 0) {
1683                 if (hostapd_ctrl_iface_wps_nfc_tag_read(hapd, buf + 17))
1684                         reply_len = -1;
1685         } else if (os_strncmp(buf, "WPS_NFC_CONFIG_TOKEN ", 21) == 0) {
1686                 reply_len = hostapd_ctrl_iface_wps_nfc_config_token(
1687                         hapd, buf + 21, reply, reply_size);
1688         } else if (os_strncmp(buf, "WPS_NFC_TOKEN ", 14) == 0) {
1689                 reply_len = hostapd_ctrl_iface_wps_nfc_token(
1690                         hapd, buf + 14, reply, reply_size);
1691         } else if (os_strncmp(buf, "NFC_GET_HANDOVER_SEL ", 21) == 0) {
1692                 reply_len = hostapd_ctrl_iface_nfc_get_handover_sel(
1693                         hapd, buf + 21, reply, reply_size);
1694         } else if (os_strncmp(buf, "NFC_REPORT_HANDOVER ", 20) == 0) {
1695                 if (hostapd_ctrl_iface_nfc_report_handover(hapd, buf + 20))
1696                         reply_len = -1;
1697 #endif /* CONFIG_WPS_NFC */
1698 #endif /* CONFIG_WPS */
1699 #ifdef CONFIG_INTERWORKING
1700         } else if (os_strncmp(buf, "SET_QOS_MAP_SET ", 16) == 0) {
1701                 if (hostapd_ctrl_iface_set_qos_map_set(hapd, buf + 16))
1702                         reply_len = -1;
1703         } else if (os_strncmp(buf, "SEND_QOS_MAP_CONF ", 18) == 0) {
1704                 if (hostapd_ctrl_iface_send_qos_map_conf(hapd, buf + 18))
1705                         reply_len = -1;
1706 #endif /* CONFIG_INTERWORKING */
1707 #ifdef CONFIG_HS20
1708         } else if (os_strncmp(buf, "HS20_WNM_NOTIF ", 15) == 0) {
1709                 if (hostapd_ctrl_iface_hs20_wnm_notif(hapd, buf + 15))
1710                         reply_len = -1;
1711         } else if (os_strncmp(buf, "HS20_DEAUTH_REQ ", 16) == 0) {
1712                 if (hostapd_ctrl_iface_hs20_deauth_req(hapd, buf + 16))
1713                         reply_len = -1;
1714 #endif /* CONFIG_HS20 */
1715 #ifdef CONFIG_WNM
1716         } else if (os_strncmp(buf, "DISASSOC_IMMINENT ", 18) == 0) {
1717                 if (hostapd_ctrl_iface_disassoc_imminent(hapd, buf + 18))
1718                         reply_len = -1;
1719         } else if (os_strncmp(buf, "ESS_DISASSOC ", 13) == 0) {
1720                 if (hostapd_ctrl_iface_ess_disassoc(hapd, buf + 13))
1721                         reply_len = -1;
1722 #endif /* CONFIG_WNM */
1723         } else if (os_strcmp(buf, "GET_CONFIG") == 0) {
1724                 reply_len = hostapd_ctrl_iface_get_config(hapd, reply,
1725                                                           reply_size);
1726         } else if (os_strncmp(buf, "SET ", 4) == 0) {
1727                 if (hostapd_ctrl_iface_set(hapd, buf + 4))
1728                         reply_len = -1;
1729         } else if (os_strncmp(buf, "GET ", 4) == 0) {
1730                 reply_len = hostapd_ctrl_iface_get(hapd, buf + 4, reply,
1731                                                    reply_size);
1732         } else if (os_strncmp(buf, "ENABLE", 6) == 0) {
1733                 if (hostapd_ctrl_iface_enable(hapd->iface))
1734                         reply_len = -1;
1735         } else if (os_strncmp(buf, "RELOAD", 6) == 0) {
1736                 if (hostapd_ctrl_iface_reload(hapd->iface))
1737                         reply_len = -1;
1738         } else if (os_strncmp(buf, "DISABLE", 7) == 0) {
1739                 if (hostapd_ctrl_iface_disable(hapd->iface))
1740                         reply_len = -1;
1741 #ifdef CONFIG_TESTING_OPTIONS
1742         } else if (os_strncmp(buf, "RADAR ", 6) == 0) {
1743                 if (hostapd_ctrl_iface_radar(hapd, buf + 6))
1744                         reply_len = -1;
1745         } else if (os_strncmp(buf, "MGMT_TX ", 8) == 0) {
1746                 if (hostapd_ctrl_iface_mgmt_tx(hapd, buf + 8))
1747                         reply_len = -1;
1748         } else if (os_strncmp(buf, "EAPOL_RX ", 9) == 0) {
1749                 if (hostapd_ctrl_iface_eapol_rx(hapd, buf + 9) < 0)
1750                         reply_len = -1;
1751         } else if (os_strncmp(buf, "DATA_TEST_CONFIG ", 17) == 0) {
1752                 if (hostapd_ctrl_iface_data_test_config(hapd, buf + 17) < 0)
1753                         reply_len = -1;
1754         } else if (os_strncmp(buf, "DATA_TEST_TX ", 13) == 0) {
1755                 if (hostapd_ctrl_iface_data_test_tx(hapd, buf + 13) < 0)
1756                         reply_len = -1;
1757 #endif /* CONFIG_TESTING_OPTIONS */
1758         } else if (os_strncmp(buf, "CHAN_SWITCH ", 12) == 0) {
1759                 if (hostapd_ctrl_iface_chan_switch(hapd->iface, buf + 12))
1760                         reply_len = -1;
1761         } else if (os_strncmp(buf, "VENDOR ", 7) == 0) {
1762                 reply_len = hostapd_ctrl_iface_vendor(hapd, buf + 7, reply,
1763                                                       reply_size);
1764
1765         } else {
1766                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1767                 reply_len = 16;
1768         }
1769
1770         if (reply_len < 0) {
1771                 os_memcpy(reply, "FAIL\n", 5);
1772                 reply_len = 5;
1773         }
1774         if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
1775                    fromlen) < 0) {
1776                 wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s",
1777                            strerror(errno));
1778         }
1779         os_free(reply);
1780 }
1781
1782
1783 static char * hostapd_ctrl_iface_path(struct hostapd_data *hapd)
1784 {
1785         char *buf;
1786         size_t len;
1787
1788         if (hapd->conf->ctrl_interface == NULL)
1789                 return NULL;
1790
1791         len = os_strlen(hapd->conf->ctrl_interface) +
1792                 os_strlen(hapd->conf->iface) + 2;
1793         buf = os_malloc(len);
1794         if (buf == NULL)
1795                 return NULL;
1796
1797         os_snprintf(buf, len, "%s/%s",
1798                     hapd->conf->ctrl_interface, hapd->conf->iface);
1799         buf[len - 1] = '\0';
1800         return buf;
1801 }
1802
1803
1804 static void hostapd_ctrl_iface_msg_cb(void *ctx, int level, int global,
1805                                       const char *txt, size_t len)
1806 {
1807         struct hostapd_data *hapd = ctx;
1808         if (hapd == NULL)
1809                 return;
1810         hostapd_ctrl_iface_send(hapd, level, txt, len);
1811 }
1812
1813
1814 int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
1815 {
1816         struct sockaddr_un addr;
1817         int s = -1;
1818         char *fname = NULL;
1819
1820         if (hapd->ctrl_sock > -1) {
1821                 wpa_printf(MSG_DEBUG, "ctrl_iface already exists!");
1822                 return 0;
1823         }
1824
1825         if (hapd->conf->ctrl_interface == NULL)
1826                 return 0;
1827
1828         if (mkdir(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
1829                 if (errno == EEXIST) {
1830                         wpa_printf(MSG_DEBUG, "Using existing control "
1831                                    "interface directory.");
1832                 } else {
1833                         perror("mkdir[ctrl_interface]");
1834                         goto fail;
1835                 }
1836         }
1837
1838         if (hapd->conf->ctrl_interface_gid_set &&
1839             chown(hapd->conf->ctrl_interface, -1,
1840                   hapd->conf->ctrl_interface_gid) < 0) {
1841                 perror("chown[ctrl_interface]");
1842                 return -1;
1843         }
1844
1845         if (!hapd->conf->ctrl_interface_gid_set &&
1846             hapd->iface->interfaces->ctrl_iface_group &&
1847             chown(hapd->conf->ctrl_interface, -1,
1848                   hapd->iface->interfaces->ctrl_iface_group) < 0) {
1849                 perror("chown[ctrl_interface]");
1850                 return -1;
1851         }
1852
1853 #ifdef ANDROID
1854         /*
1855          * Android is using umask 0077 which would leave the control interface
1856          * directory without group access. This breaks things since Wi-Fi
1857          * framework assumes that this directory can be accessed by other
1858          * applications in the wifi group. Fix this by adding group access even
1859          * if umask value would prevent this.
1860          */
1861         if (chmod(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
1862                 wpa_printf(MSG_ERROR, "CTRL: Could not chmod directory: %s",
1863                            strerror(errno));
1864                 /* Try to continue anyway */
1865         }
1866 #endif /* ANDROID */
1867
1868         if (os_strlen(hapd->conf->ctrl_interface) + 1 +
1869             os_strlen(hapd->conf->iface) >= sizeof(addr.sun_path))
1870                 goto fail;
1871
1872         s = socket(PF_UNIX, SOCK_DGRAM, 0);
1873         if (s < 0) {
1874                 perror("socket(PF_UNIX)");
1875                 goto fail;
1876         }
1877
1878         os_memset(&addr, 0, sizeof(addr));
1879 #ifdef __FreeBSD__
1880         addr.sun_len = sizeof(addr);
1881 #endif /* __FreeBSD__ */
1882         addr.sun_family = AF_UNIX;
1883         fname = hostapd_ctrl_iface_path(hapd);
1884         if (fname == NULL)
1885                 goto fail;
1886         os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
1887         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1888                 wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
1889                            strerror(errno));
1890                 if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1891                         wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
1892                                    " allow connections - assuming it was left"
1893                                    "over from forced program termination");
1894                         if (unlink(fname) < 0) {
1895                                 perror("unlink[ctrl_iface]");
1896                                 wpa_printf(MSG_ERROR, "Could not unlink "
1897                                            "existing ctrl_iface socket '%s'",
1898                                            fname);
1899                                 goto fail;
1900                         }
1901                         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
1902                             0) {
1903                                 perror("hostapd-ctrl-iface: bind(PF_UNIX)");
1904                                 goto fail;
1905                         }
1906                         wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
1907                                    "ctrl_iface socket '%s'", fname);
1908                 } else {
1909                         wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
1910                                    "be in use - cannot override it");
1911                         wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
1912                                    "not used anymore", fname);
1913                         os_free(fname);
1914                         fname = NULL;
1915                         goto fail;
1916                 }
1917         }
1918
1919         if (hapd->conf->ctrl_interface_gid_set &&
1920             chown(fname, -1, hapd->conf->ctrl_interface_gid) < 0) {
1921                 perror("chown[ctrl_interface/ifname]");
1922                 goto fail;
1923         }
1924
1925         if (!hapd->conf->ctrl_interface_gid_set &&
1926             hapd->iface->interfaces->ctrl_iface_group &&
1927             chown(fname, -1, hapd->iface->interfaces->ctrl_iface_group) < 0) {
1928                 perror("chown[ctrl_interface/ifname]");
1929                 goto fail;
1930         }
1931
1932         if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
1933                 perror("chmod[ctrl_interface/ifname]");
1934                 goto fail;
1935         }
1936         os_free(fname);
1937
1938         hapd->ctrl_sock = s;
1939         eloop_register_read_sock(s, hostapd_ctrl_iface_receive, hapd,
1940                                  NULL);
1941         hapd->msg_ctx = hapd;
1942         wpa_msg_register_cb(hostapd_ctrl_iface_msg_cb);
1943
1944         return 0;
1945
1946 fail:
1947         if (s >= 0)
1948                 close(s);
1949         if (fname) {
1950                 unlink(fname);
1951                 os_free(fname);
1952         }
1953         return -1;
1954 }
1955
1956
1957 void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
1958 {
1959         struct wpa_ctrl_dst *dst, *prev;
1960
1961         if (hapd->ctrl_sock > -1) {
1962                 char *fname;
1963                 eloop_unregister_read_sock(hapd->ctrl_sock);
1964                 close(hapd->ctrl_sock);
1965                 hapd->ctrl_sock = -1;
1966                 fname = hostapd_ctrl_iface_path(hapd);
1967                 if (fname)
1968                         unlink(fname);
1969                 os_free(fname);
1970
1971                 if (hapd->conf->ctrl_interface &&
1972                     rmdir(hapd->conf->ctrl_interface) < 0) {
1973                         if (errno == ENOTEMPTY) {
1974                                 wpa_printf(MSG_DEBUG, "Control interface "
1975                                            "directory not empty - leaving it "
1976                                            "behind");
1977                         } else {
1978                                 wpa_printf(MSG_ERROR,
1979                                            "rmdir[ctrl_interface=%s]: %s",
1980                                            hapd->conf->ctrl_interface,
1981                                            strerror(errno));
1982                         }
1983                 }
1984         }
1985
1986         dst = hapd->ctrl_dst;
1987         while (dst) {
1988                 prev = dst;
1989                 dst = dst->next;
1990                 os_free(prev);
1991         }
1992
1993 #ifdef CONFIG_TESTING_OPTIONS
1994         l2_packet_deinit(hapd->l2_test);
1995         hapd->l2_test = NULL;
1996 #endif /* CONFIG_TESTING_OPTIONS */
1997 }
1998
1999
2000 static int hostapd_ctrl_iface_add(struct hapd_interfaces *interfaces,
2001                                   char *buf)
2002 {
2003         if (hostapd_add_iface(interfaces, buf) < 0) {
2004                 wpa_printf(MSG_ERROR, "Adding interface %s failed", buf);
2005                 return -1;
2006         }
2007         return 0;
2008 }
2009
2010
2011 static int hostapd_ctrl_iface_remove(struct hapd_interfaces *interfaces,
2012                                      char *buf)
2013 {
2014         if (hostapd_remove_iface(interfaces, buf) < 0) {
2015                 wpa_printf(MSG_ERROR, "Removing interface %s failed", buf);
2016                 return -1;
2017         }
2018         return 0;
2019 }
2020
2021
2022 static void hostapd_ctrl_iface_flush(struct hapd_interfaces *interfaces)
2023 {
2024 #ifdef CONFIG_WPS_TESTING
2025         wps_version_number = 0x20;
2026         wps_testing_dummy_cred = 0;
2027         wps_corrupt_pkhash = 0;
2028 #endif /* CONFIG_WPS_TESTING */
2029 }
2030
2031
2032 static void hostapd_global_ctrl_iface_receive(int sock, void *eloop_ctx,
2033                                               void *sock_ctx)
2034 {
2035         void *interfaces = eloop_ctx;
2036         char buf[256];
2037         int res;
2038         struct sockaddr_un from;
2039         socklen_t fromlen = sizeof(from);
2040         char reply[24];
2041         int reply_len;
2042
2043         res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
2044                        (struct sockaddr *) &from, &fromlen);
2045         if (res < 0) {
2046                 perror("recvfrom(ctrl_iface)");
2047                 return;
2048         }
2049         buf[res] = '\0';
2050         wpa_printf(MSG_DEBUG, "Global ctrl_iface command: %s", buf);
2051
2052         os_memcpy(reply, "OK\n", 3);
2053         reply_len = 3;
2054
2055         if (os_strcmp(buf, "PING") == 0) {
2056                 os_memcpy(reply, "PONG\n", 5);
2057                 reply_len = 5;
2058         } else if (os_strncmp(buf, "RELOG", 5) == 0) {
2059                 if (wpa_debug_reopen_file() < 0)
2060                         reply_len = -1;
2061         } else if (os_strcmp(buf, "FLUSH") == 0) {
2062                 hostapd_ctrl_iface_flush(interfaces);
2063         } else if (os_strncmp(buf, "ADD ", 4) == 0) {
2064                 if (hostapd_ctrl_iface_add(interfaces, buf + 4) < 0)
2065                         reply_len = -1;
2066         } else if (os_strncmp(buf, "REMOVE ", 7) == 0) {
2067                 if (hostapd_ctrl_iface_remove(interfaces, buf + 7) < 0)
2068                         reply_len = -1;
2069 #ifdef CONFIG_MODULE_TESTS
2070         } else if (os_strcmp(buf, "MODULE_TESTS") == 0) {
2071                 int hapd_module_tests(void);
2072                 if (hapd_module_tests() < 0)
2073                         reply_len = -1;
2074 #endif /* CONFIG_MODULE_TESTS */
2075         } else {
2076                 wpa_printf(MSG_DEBUG, "Unrecognized global ctrl_iface command "
2077                            "ignored");
2078                 reply_len = -1;
2079         }
2080
2081         if (reply_len < 0) {
2082                 os_memcpy(reply, "FAIL\n", 5);
2083                 reply_len = 5;
2084         }
2085
2086         if (sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from,
2087                    fromlen) < 0) {
2088                 wpa_printf(MSG_DEBUG, "CTRL: sendto failed: %s",
2089                            strerror(errno));
2090         }
2091 }
2092
2093
2094 static char * hostapd_global_ctrl_iface_path(struct hapd_interfaces *interface)
2095 {
2096         char *buf;
2097         size_t len;
2098
2099         if (interface->global_iface_path == NULL)
2100                 return NULL;
2101
2102         len = os_strlen(interface->global_iface_path) +
2103                 os_strlen(interface->global_iface_name) + 2;
2104         buf = os_malloc(len);
2105         if (buf == NULL)
2106                 return NULL;
2107
2108         os_snprintf(buf, len, "%s/%s", interface->global_iface_path,
2109                     interface->global_iface_name);
2110         buf[len - 1] = '\0';
2111         return buf;
2112 }
2113
2114
2115 int hostapd_global_ctrl_iface_init(struct hapd_interfaces *interface)
2116 {
2117         struct sockaddr_un addr;
2118         int s = -1;
2119         char *fname = NULL;
2120
2121         if (interface->global_iface_path == NULL) {
2122                 wpa_printf(MSG_DEBUG, "ctrl_iface not configured!");
2123                 return 0;
2124         }
2125
2126         if (mkdir(interface->global_iface_path, S_IRWXU | S_IRWXG) < 0) {
2127                 if (errno == EEXIST) {
2128                         wpa_printf(MSG_DEBUG, "Using existing control "
2129                                    "interface directory.");
2130                 } else {
2131                         perror("mkdir[ctrl_interface]");
2132                         goto fail;
2133                 }
2134         } else if (interface->ctrl_iface_group &&
2135                    chown(interface->global_iface_path, -1,
2136                          interface->ctrl_iface_group) < 0) {
2137                 perror("chown[ctrl_interface]");
2138                 goto fail;
2139         }
2140
2141         if (os_strlen(interface->global_iface_path) + 1 +
2142             os_strlen(interface->global_iface_name) >= sizeof(addr.sun_path))
2143                 goto fail;
2144
2145         s = socket(PF_UNIX, SOCK_DGRAM, 0);
2146         if (s < 0) {
2147                 perror("socket(PF_UNIX)");
2148                 goto fail;
2149         }
2150
2151         os_memset(&addr, 0, sizeof(addr));
2152 #ifdef __FreeBSD__
2153         addr.sun_len = sizeof(addr);
2154 #endif /* __FreeBSD__ */
2155         addr.sun_family = AF_UNIX;
2156         fname = hostapd_global_ctrl_iface_path(interface);
2157         if (fname == NULL)
2158                 goto fail;
2159         os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
2160         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2161                 wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
2162                            strerror(errno));
2163                 if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
2164                         wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
2165                                    " allow connections - assuming it was left"
2166                                    "over from forced program termination");
2167                         if (unlink(fname) < 0) {
2168                                 perror("unlink[ctrl_iface]");
2169                                 wpa_printf(MSG_ERROR, "Could not unlink "
2170                                            "existing ctrl_iface socket '%s'",
2171                                            fname);
2172                                 goto fail;
2173                         }
2174                         if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
2175                             0) {
2176                                 perror("bind(PF_UNIX)");
2177                                 goto fail;
2178                         }
2179                         wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
2180                                    "ctrl_iface socket '%s'", fname);
2181                 } else {
2182                         wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
2183                                    "be in use - cannot override it");
2184                         wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
2185                                    "not used anymore", fname);
2186                         os_free(fname);
2187                         fname = NULL;
2188                         goto fail;
2189                 }
2190         }
2191
2192         if (interface->ctrl_iface_group &&
2193             chown(fname, -1, interface->ctrl_iface_group) < 0) {
2194                 perror("chown[ctrl_interface]");
2195                 goto fail;
2196         }
2197
2198         if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
2199                 perror("chmod[ctrl_interface/ifname]");
2200                 goto fail;
2201         }
2202         os_free(fname);
2203
2204         interface->global_ctrl_sock = s;
2205         eloop_register_read_sock(s, hostapd_global_ctrl_iface_receive,
2206                                  interface, NULL);
2207
2208         return 0;
2209
2210 fail:
2211         if (s >= 0)
2212                 close(s);
2213         if (fname) {
2214                 unlink(fname);
2215                 os_free(fname);
2216         }
2217         return -1;
2218 }
2219
2220
2221 void hostapd_global_ctrl_iface_deinit(struct hapd_interfaces *interfaces)
2222 {
2223         char *fname = NULL;
2224
2225         if (interfaces->global_ctrl_sock > -1) {
2226                 eloop_unregister_read_sock(interfaces->global_ctrl_sock);
2227                 close(interfaces->global_ctrl_sock);
2228                 interfaces->global_ctrl_sock = -1;
2229                 fname = hostapd_global_ctrl_iface_path(interfaces);
2230                 if (fname) {
2231                         unlink(fname);
2232                         os_free(fname);
2233                 }
2234
2235                 if (interfaces->global_iface_path &&
2236                     rmdir(interfaces->global_iface_path) < 0) {
2237                         if (errno == ENOTEMPTY) {
2238                                 wpa_printf(MSG_DEBUG, "Control interface "
2239                                            "directory not empty - leaving it "
2240                                            "behind");
2241                         } else {
2242                                 wpa_printf(MSG_ERROR,
2243                                            "rmdir[ctrl_interface=%s]: %s",
2244                                            interfaces->global_iface_path,
2245                                            strerror(errno));
2246                         }
2247                 }
2248                 os_free(interfaces->global_iface_path);
2249                 interfaces->global_iface_path = NULL;
2250         }
2251 }
2252
2253
2254 static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
2255                                     const char *buf, size_t len)
2256 {
2257         struct wpa_ctrl_dst *dst, *next;
2258         struct msghdr msg;
2259         int idx;
2260         struct iovec io[2];
2261         char levelstr[10];
2262
2263         dst = hapd->ctrl_dst;
2264         if (hapd->ctrl_sock < 0 || dst == NULL)
2265                 return;
2266
2267         os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
2268         io[0].iov_base = levelstr;
2269         io[0].iov_len = os_strlen(levelstr);
2270         io[1].iov_base = (char *) buf;
2271         io[1].iov_len = len;
2272         os_memset(&msg, 0, sizeof(msg));
2273         msg.msg_iov = io;
2274         msg.msg_iovlen = 2;
2275
2276         idx = 0;
2277         while (dst) {
2278                 next = dst->next;
2279                 if (level >= dst->debug_level) {
2280                         wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor send",
2281                                     (u8 *) dst->addr.sun_path, dst->addrlen -
2282                                     offsetof(struct sockaddr_un, sun_path));
2283                         msg.msg_name = &dst->addr;
2284                         msg.msg_namelen = dst->addrlen;
2285                         if (sendmsg(hapd->ctrl_sock, &msg, 0) < 0) {
2286                                 int _errno = errno;
2287                                 wpa_printf(MSG_INFO, "CTRL_IFACE monitor[%d]: "
2288                                            "%d - %s",
2289                                            idx, errno, strerror(errno));
2290                                 dst->errors++;
2291                                 if (dst->errors > 10 || _errno == ENOENT) {
2292                                         hostapd_ctrl_iface_detach(
2293                                                 hapd, &dst->addr,
2294                                                 dst->addrlen);
2295                                 }
2296                         } else
2297                                 dst->errors = 0;
2298                 }
2299                 idx++;
2300                 dst = next;
2301         }
2302 }
2303
2304 #endif /* CONFIG_NATIVE_WINDOWS */