wpa_supplicant/ctrl_iface.c

   1 /*
   2  * WPA Supplicant / Control interface (shared code for all backends)
   3  * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "wpa.h"
  20 #include "config.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "wpa_supplicant_i.h"
  23 #include "driver_i.h"
  24 #include "ctrl_iface.h"
  25 #include "l2_packet/l2_packet.h"
  26 #include "preauth.h"
  27 #include "pmksa_cache.h"
  28 #include "wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "ieee802_11_defs.h"
  31 #include "wps_supplicant.h"
  32 #include "wps/wps.h"
  33 #include "ibss_rsn.h"
  34 #include "ap.h"
  35 #include "notify.h"
  36
  37 extern struct wpa_driver_ops *wpa_drivers[];
  38
  39 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
  40                                             char *buf, int len);
  41 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
  42                                                   char *buf, int len);
  43
  44
  45 static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
  46                                          char *cmd)
  47 {
  48         char *value;
  49         int ret = 0;
  50
  51         value = os_strchr(cmd, ' ');
  52         if (value == NULL)
  53                 return -1;
  54         *value++ = '\0';
  55
  56         wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
  57         if (os_strcasecmp(cmd, "EAPOL::heldPeriod") == 0) {
  58                 eapol_sm_configure(wpa_s->eapol,
  59                                    atoi(value), -1, -1, -1);
  60         } else if (os_strcasecmp(cmd, "EAPOL::authPeriod") == 0) {
  61                 eapol_sm_configure(wpa_s->eapol,
  62                                    -1, atoi(value), -1, -1);
  63         } else if (os_strcasecmp(cmd, "EAPOL::startPeriod") == 0) {
  64                 eapol_sm_configure(wpa_s->eapol,
  65                                    -1, -1, atoi(value), -1);
  66         } else if (os_strcasecmp(cmd, "EAPOL::maxStart") == 0) {
  67                 eapol_sm_configure(wpa_s->eapol,
  68                                    -1, -1, -1, atoi(value));
  69         } else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKLifetime") == 0) {
  70                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
  71                                      atoi(value)))
  72                         ret = -1;
  73         } else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKReauthThreshold") ==
  74                    0) {
  75                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
  76                                      atoi(value)))
  77                         ret = -1;
  78         } else if (os_strcasecmp(cmd, "dot11RSNAConfigSATimeout") == 0) {
  79                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, atoi(value)))
  80                         ret = -1;
  81         } else
  82                 ret = -1;
  83
  84         return ret;
  85 }
  86
  87
  88 #ifdef IEEE8021X_EAPOL
  89 static int wpa_supplicant_ctrl_iface_preauth(struct wpa_supplicant *wpa_s,
  90                                              char *addr)
  91 {
  92         u8 bssid[ETH_ALEN];
  93         struct wpa_ssid *ssid = wpa_s->current_ssid;
  94
  95         if (hwaddr_aton(addr, bssid)) {
  96                 wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH: invalid address "
  97                            "'%s'", addr);
  98                 return -1;
  99         }
 100
 101         wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH " MACSTR, MAC2STR(bssid));
 102         rsn_preauth_deinit(wpa_s->wpa);
 103         if (rsn_preauth_init(wpa_s->wpa, bssid, ssid ? &ssid->eap : NULL))
 104                 return -1;
 105
 106         return 0;
 107 }
 108 #endif /* IEEE8021X_EAPOL */
 109
 110
 111 #ifdef CONFIG_PEERKEY
 112 /* MLME-STKSTART.request(peer) */
 113 static int wpa_supplicant_ctrl_iface_stkstart(
 114         struct wpa_supplicant *wpa_s, char *addr)
 115 {
 116         u8 peer[ETH_ALEN];
 117
 118         if (hwaddr_aton(addr, peer)) {
 119                 wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART: invalid "
 120                            "address '%s'", peer);
 121                 return -1;
 122         }
 123
 124         wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART " MACSTR,
 125                    MAC2STR(peer));
 126
 127         return wpa_sm_stkstart(wpa_s->wpa, peer);
 128 }
 129 #endif /* CONFIG_PEERKEY */
 130
 131
 132 #ifdef CONFIG_IEEE80211R
 133 static int wpa_supplicant_ctrl_iface_ft_ds(
 134         struct wpa_supplicant *wpa_s, char *addr)
 135 {
 136         u8 target_ap[ETH_ALEN];
 137
 138         if (hwaddr_aton(addr, target_ap)) {
 139                 wpa_printf(MSG_DEBUG, "CTRL_IFACE FT_DS: invalid "
 140                            "address '%s'", target_ap);
 141                 return -1;
 142         }
 143
 144         wpa_printf(MSG_DEBUG, "CTRL_IFACE FT_DS " MACSTR, MAC2STR(target_ap));
 145
 146         return wpa_ft_start_over_ds(wpa_s->wpa, target_ap);
 147 }
 148 #endif /* CONFIG_IEEE80211R */
 149
 150
 151 #ifdef CONFIG_WPS
 152 static int wpa_supplicant_ctrl_iface_wps_pbc(struct wpa_supplicant *wpa_s,
 153                                              char *cmd)
 154 {
 155         u8 bssid[ETH_ALEN], *_bssid = bssid;
 156
 157         if (cmd == NULL || os_strcmp(cmd, "any") == 0)
 158                 _bssid = NULL;
 159         else if (hwaddr_aton(cmd, bssid)) {
 160                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_PBC: invalid BSSID '%s'",
 161                            cmd);
 162                 return -1;
 163         }
 164
 165 #ifdef CONFIG_AP
 166         if (wpa_s->ap_iface)
 167                 return wpa_supplicant_ap_wps_pbc(wpa_s, _bssid);
 168 #endif /* CONFIG_AP */
 169
 170         return wpas_wps_start_pbc(wpa_s, _bssid);
 171 }
 172
 173
 174 static int wpa_supplicant_ctrl_iface_wps_pin(struct wpa_supplicant *wpa_s,
 175                                              char *cmd, char *buf,
 176                                              size_t buflen)
 177 {
 178         u8 bssid[ETH_ALEN], *_bssid = bssid;
 179         char *pin;
 180         int ret;
 181
 182         pin = os_strchr(cmd, ' ');
 183         if (pin)
 184                 *pin++ = '\0';
 185
 186         if (os_strcmp(cmd, "any") == 0)
 187                 _bssid = NULL;
 188         else if (hwaddr_aton(cmd, bssid)) {
 189                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_PIN: invalid BSSID '%s'",
 190                            cmd);
 191                 return -1;
 192         }
 193
 194 #ifdef CONFIG_AP
 195         if (wpa_s->ap_iface)
 196                 return wpa_supplicant_ap_wps_pin(wpa_s, _bssid, pin,
 197                                                  buf, buflen);
 198 #endif /* CONFIG_AP */
 199
 200         if (pin) {
 201                 ret = wpas_wps_start_pin(wpa_s, _bssid, pin);
 202                 if (ret < 0)
 203                         return -1;
 204                 ret = os_snprintf(buf, buflen, "%s", pin);
 205                 if (ret < 0 || (size_t) ret >= buflen)
 206                         return -1;
 207                 return ret;
 208         }
 209
 210         ret = wpas_wps_start_pin(wpa_s, _bssid, NULL);
 211         if (ret < 0)
 212                 return -1;
 213
 214         /* Return the generated PIN */
 215         ret = os_snprintf(buf, buflen, "%08d", ret);
 216         if (ret < 0 || (size_t) ret >= buflen)
 217                 return -1;
 218         return ret;
 219 }
 220
 221
 222 #ifdef CONFIG_WPS_OOB
 223 static int wpa_supplicant_ctrl_iface_wps_oob(struct wpa_supplicant *wpa_s,
 224                                              char *cmd)
 225 {
 226         char *path, *method, *name;
 227
 228         path = os_strchr(cmd, ' ');
 229         if (path == NULL)
 230                 return -1;
 231         *path++ = '\0';
 232
 233         method = os_strchr(path, ' ');
 234         if (method == NULL)
 235                 return -1;
 236         *method++ = '\0';
 237
 238         name = os_strchr(method, ' ');
 239         if (name != NULL)
 240                 *name++ = '\0';
 241
 242         return wpas_wps_start_oob(wpa_s, cmd, path, method, name);
 243 }
 244 #endif /* CONFIG_WPS_OOB */
 245
 246
 247 static int wpa_supplicant_ctrl_iface_wps_reg(struct wpa_supplicant *wpa_s,
 248                                              char *cmd)
 249 {
 250         u8 bssid[ETH_ALEN], *_bssid = bssid;
 251         char *pin;
 252         char *new_ssid;
 253         char *new_auth;
 254         char *new_encr;
 255         char *new_key;
 256         struct wps_new_ap_settings ap;
 257
 258         pin = os_strchr(cmd, ' ');
 259         if (pin == NULL)
 260                 return -1;
 261         *pin++ = '\0';
 262
 263         if (os_strcmp(cmd, "any") == 0)
 264                 _bssid = NULL;
 265         else if (hwaddr_aton(cmd, bssid)) {
 266                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_REG: invalid BSSID '%s'",
 267                            cmd);
 268                 return -1;
 269         }
 270
 271         new_ssid = os_strchr(pin, ' ');
 272         if (new_ssid == NULL)
 273                 return wpas_wps_start_reg(wpa_s, _bssid, pin, NULL);
 274         *new_ssid++ = '\0';
 275
 276         new_auth = os_strchr(new_ssid, ' ');
 277         if (new_auth == NULL)
 278                 return -1;
 279         *new_auth++ = '\0';
 280
 281         new_encr = os_strchr(new_auth, ' ');
 282         if (new_encr == NULL)
 283                 return -1;
 284         *new_encr++ = '\0';
 285
 286         new_key = os_strchr(new_encr, ' ');
 287         if (new_key == NULL)
 288                 return -1;
 289         *new_key++ = '\0';
 290
 291         os_memset(&ap, 0, sizeof(ap));
 292         ap.ssid_hex = new_ssid;
 293         ap.auth = new_auth;
 294         ap.encr = new_encr;
 295         ap.key_hex = new_key;
 296         return wpas_wps_start_reg(wpa_s, _bssid, pin, &ap);
 297 }
 298 #endif /* CONFIG_WPS */
 299
 300
 301 #ifdef CONFIG_IBSS_RSN
 302 static int wpa_supplicant_ctrl_iface_ibss_rsn(
 303         struct wpa_supplicant *wpa_s, char *addr)
 304 {
 305         u8 peer[ETH_ALEN];
 306
 307         if (hwaddr_aton(addr, peer)) {
 308                 wpa_printf(MSG_DEBUG, "CTRL_IFACE IBSS_RSN: invalid "
 309                            "address '%s'", peer);
 310                 return -1;
 311         }
 312
 313         wpa_printf(MSG_DEBUG, "CTRL_IFACE IBSS_RSN " MACSTR,
 314                    MAC2STR(peer));
 315
 316         return ibss_rsn_start(wpa_s->ibss_rsn, peer);
 317 }
 318 #endif /* CONFIG_IBSS_RSN */
 319
 320
 321 static int wpa_supplicant_ctrl_iface_ctrl_rsp(struct wpa_supplicant *wpa_s,
 322                                               char *rsp)
 323 {
 324 #ifdef IEEE8021X_EAPOL
 325         char *pos, *id_pos;
 326         int id;
 327         struct wpa_ssid *ssid;
 328         struct eap_peer_config *eap;
 329
 330         pos = os_strchr(rsp, '-');
 331         if (pos == NULL)
 332                 return -1;
 333         *pos++ = '\0';
 334         id_pos = pos;
 335         pos = os_strchr(pos, ':');
 336         if (pos == NULL)
 337                 return -1;
 338         *pos++ = '\0';
 339         id = atoi(id_pos);
 340         wpa_printf(MSG_DEBUG, "CTRL_IFACE: field=%s id=%d", rsp, id);
 341         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
 342                               (u8 *) pos, os_strlen(pos));
 343
 344         ssid = wpa_config_get_network(wpa_s->conf, id);
 345         if (ssid == NULL) {
 346                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
 347                            "to update", id);
 348                 return -1;
 349         }
 350         eap = &ssid->eap;
 351
 352         if (os_strcmp(rsp, "IDENTITY") == 0) {
 353                 os_free(eap->identity);
 354                 eap->identity = (u8 *) os_strdup(pos);
 355                 eap->identity_len = os_strlen(pos);
 356                 eap->pending_req_identity = 0;
 357                 if (ssid == wpa_s->current_ssid)
 358                         wpa_s->reassociate = 1;
 359         } else if (os_strcmp(rsp, "PASSWORD") == 0) {
 360                 os_free(eap->password);
 361                 eap->password = (u8 *) os_strdup(pos);
 362                 eap->password_len = os_strlen(pos);
 363                 eap->pending_req_password = 0;
 364                 if (ssid == wpa_s->current_ssid)
 365                         wpa_s->reassociate = 1;
 366         } else if (os_strcmp(rsp, "NEW_PASSWORD") == 0) {
 367                 os_free(eap->new_password);
 368                 eap->new_password = (u8 *) os_strdup(pos);
 369                 eap->new_password_len = os_strlen(pos);
 370                 eap->pending_req_new_password = 0;
 371                 if (ssid == wpa_s->current_ssid)
 372                         wpa_s->reassociate = 1;
 373         } else if (os_strcmp(rsp, "PIN") == 0) {
 374                 os_free(eap->pin);
 375                 eap->pin = os_strdup(pos);
 376                 eap->pending_req_pin = 0;
 377                 if (ssid == wpa_s->current_ssid)
 378                         wpa_s->reassociate = 1;
 379         } else if (os_strcmp(rsp, "OTP") == 0) {
 380                 os_free(eap->otp);
 381                 eap->otp = (u8 *) os_strdup(pos);
 382                 eap->otp_len = os_strlen(pos);
 383                 os_free(eap->pending_req_otp);
 384                 eap->pending_req_otp = NULL;
 385                 eap->pending_req_otp_len = 0;
 386         } else if (os_strcmp(rsp, "PASSPHRASE") == 0) {
 387                 os_free(eap->private_key_passwd);
 388                 eap->private_key_passwd = (u8 *) os_strdup(pos);
 389                 eap->pending_req_passphrase = 0;
 390                 if (ssid == wpa_s->current_ssid)
 391                         wpa_s->reassociate = 1;
 392         } else {
 393                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", rsp);
 394                 return -1;
 395         }
 396
 397         return 0;
 398 #else /* IEEE8021X_EAPOL */
 399         wpa_printf(MSG_DEBUG, "CTRL_IFACE: 802.1X not included");
 400         return -1;
 401 #endif /* IEEE8021X_EAPOL */
 402 }
 403
 404
 405 static int wpa_supplicant_ctrl_iface_status(struct wpa_supplicant *wpa_s,
 406                                             const char *params,
 407                                             char *buf, size_t buflen)
 408 {
 409         char *pos, *end, tmp[30];
 410         int res, verbose, ret;
 411
 412         verbose = os_strcmp(params, "-VERBOSE") == 0;
 413         pos = buf;
 414         end = buf + buflen;
 415         if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 416                 struct wpa_ssid *ssid = wpa_s->current_ssid;
 417                 ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n",
 418                                   MAC2STR(wpa_s->bssid));
 419                 if (ret < 0 || ret >= end - pos)
 420                         return pos - buf;
 421                 pos += ret;
 422                 if (ssid) {
 423                         u8 *_ssid = ssid->ssid;
 424                         size_t ssid_len = ssid->ssid_len;
 425                         u8 ssid_buf[MAX_SSID_LEN];
 426                         if (ssid_len == 0) {
 427                                 int _res = wpa_drv_get_ssid(wpa_s, ssid_buf);
 428                                 if (_res < 0)
 429                                         ssid_len = 0;
 430                                 else
 431                                         ssid_len = _res;
 432                                 _ssid = ssid_buf;
 433                         }
 434                         ret = os_snprintf(pos, end - pos, "ssid=%s\nid=%d\n",
 435                                           wpa_ssid_txt(_ssid, ssid_len),
 436                                           ssid->id);
 437                         if (ret < 0 || ret >= end - pos)
 438                                 return pos - buf;
 439                         pos += ret;
 440
 441                         if (ssid->id_str) {
 442                                 ret = os_snprintf(pos, end - pos,
 443                                                   "id_str=%s\n",
 444                                                   ssid->id_str);
 445                                 if (ret < 0 || ret >= end - pos)
 446                                         return pos - buf;
 447                                 pos += ret;
 448                         }
 449                 }
 450
 451 #ifdef CONFIG_AP
 452                 if (wpa_s->ap_iface) {
 453                         pos += ap_ctrl_iface_wpa_get_status(wpa_s, pos,
 454                                                             end - pos,
 455                                                             verbose);
 456                 } else
 457 #endif /* CONFIG_AP */
 458                 pos += wpa_sm_get_status(wpa_s->wpa, pos, end - pos, verbose);
 459         }
 460         ret = os_snprintf(pos, end - pos, "wpa_state=%s\n",
 461                           wpa_supplicant_state_txt(wpa_s->wpa_state));
 462         if (ret < 0 || ret >= end - pos)
 463                 return pos - buf;
 464         pos += ret;
 465
 466         if (wpa_s->l2 &&
 467             l2_packet_get_ip_addr(wpa_s->l2, tmp, sizeof(tmp)) >= 0) {
 468                 ret = os_snprintf(pos, end - pos, "ip_address=%s\n", tmp);
 469                 if (ret < 0 || ret >= end - pos)
 470                         return pos - buf;
 471                 pos += ret;
 472         }
 473
 474         if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
 475             wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 476                 res = eapol_sm_get_status(wpa_s->eapol, pos, end - pos,
 477                                           verbose);
 478                 if (res >= 0)
 479                         pos += res;
 480         }
 481
 482         res = rsn_preauth_get_status(wpa_s->wpa, pos, end - pos, verbose);
 483         if (res >= 0)
 484                 pos += res;
 485
 486         return pos - buf;
 487 }
 488
 489
 490 static int wpa_supplicant_ctrl_iface_bssid(struct wpa_supplicant *wpa_s,
 491                                            char *cmd)
 492 {
 493         char *pos;
 494         int id;
 495         struct wpa_ssid *ssid;
 496         u8 bssid[ETH_ALEN];
 497
 498         /* cmd: "<network id> <BSSID>" */
 499         pos = os_strchr(cmd, ' ');
 500         if (pos == NULL)
 501                 return -1;
 502         *pos++ = '\0';
 503         id = atoi(cmd);
 504         wpa_printf(MSG_DEBUG, "CTRL_IFACE: id=%d bssid='%s'", id, pos);
 505         if (hwaddr_aton(pos, bssid)) {
 506                 wpa_printf(MSG_DEBUG ,"CTRL_IFACE: invalid BSSID '%s'", pos);
 507                 return -1;
 508         }
 509
 510         ssid = wpa_config_get_network(wpa_s->conf, id);
 511         if (ssid == NULL) {
 512                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
 513                            "to update", id);
 514                 return -1;
 515         }
 516
 517         os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 518         ssid->bssid_set = !is_zero_ether_addr(bssid);
 519
 520         return 0;
 521 }
 522
 523
 524 static int wpa_supplicant_ctrl_iface_list_networks(
 525         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 526 {
 527         char *pos, *end;
 528         struct wpa_ssid *ssid;
 529         int ret;
 530
 531         pos = buf;
 532         end = buf + buflen;
 533         ret = os_snprintf(pos, end - pos,
 534                           "network id / ssid / bssid / flags\n");
 535         if (ret < 0 || ret >= end - pos)
 536                 return pos - buf;
 537         pos += ret;
 538
 539         ssid = wpa_s->conf->ssid;
 540         while (ssid) {
 541                 ret = os_snprintf(pos, end - pos, "%d\t%s",
 542                                   ssid->id,
 543                                   wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 544                 if (ret < 0 || ret >= end - pos)
 545                         return pos - buf;
 546                 pos += ret;
 547                 if (ssid->bssid_set) {
 548                         ret = os_snprintf(pos, end - pos, "\t" MACSTR,
 549                                           MAC2STR(ssid->bssid));
 550                 } else {
 551                         ret = os_snprintf(pos, end - pos, "\tany");
 552                 }
 553                 if (ret < 0 || ret >= end - pos)
 554                         return pos - buf;
 555                 pos += ret;
 556                 ret = os_snprintf(pos, end - pos, "\t%s%s",
 557                                   ssid == wpa_s->current_ssid ?
 558                                   "[CURRENT]" : "",
 559                                   ssid->disabled ? "[DISABLED]" : "");
 560                 if (ret < 0 || ret >= end - pos)
 561                         return pos - buf;
 562                 pos += ret;
 563                 ret = os_snprintf(pos, end - pos, "\n");
 564                 if (ret < 0 || ret >= end - pos)
 565                         return pos - buf;
 566                 pos += ret;
 567
 568                 ssid = ssid->next;
 569         }
 570
 571         return pos - buf;
 572 }
 573
 574
 575 static char * wpa_supplicant_cipher_txt(char *pos, char *end, int cipher)
 576 {
 577         int first = 1, ret;
 578         ret = os_snprintf(pos, end - pos, "-");
 579         if (ret < 0 || ret >= end - pos)
 580                 return pos;
 581         pos += ret;
 582         if (cipher & WPA_CIPHER_NONE) {
 583                 ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : "+");
 584                 if (ret < 0 || ret >= end - pos)
 585                         return pos;
 586                 pos += ret;
 587                 first = 0;
 588         }
 589         if (cipher & WPA_CIPHER_WEP40) {
 590                 ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : "+");
 591                 if (ret < 0 || ret >= end - pos)
 592                         return pos;
 593                 pos += ret;
 594                 first = 0;
 595         }
 596         if (cipher & WPA_CIPHER_WEP104) {
 597                 ret = os_snprintf(pos, end - pos, "%sWEP104",
 598                                   first ? "" : "+");
 599                 if (ret < 0 || ret >= end - pos)
 600                         return pos;
 601                 pos += ret;
 602                 first = 0;
 603         }
 604         if (cipher & WPA_CIPHER_TKIP) {
 605                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : "+");
 606                 if (ret < 0 || ret >= end - pos)
 607                         return pos;
 608                 pos += ret;
 609                 first = 0;
 610         }
 611         if (cipher & WPA_CIPHER_CCMP) {
 612                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : "+");
 613                 if (ret < 0 || ret >= end - pos)
 614                         return pos;
 615                 pos += ret;
 616                 first = 0;
 617         }
 618         return pos;
 619 }
 620
 621
 622 static char * wpa_supplicant_ie_txt(char *pos, char *end, const char *proto,
 623                                     const u8 *ie, size_t ie_len)
 624 {
 625         struct wpa_ie_data data;
 626         int first, ret;
 627
 628         ret = os_snprintf(pos, end - pos, "[%s-", proto);
 629         if (ret < 0 || ret >= end - pos)
 630                 return pos;
 631         pos += ret;
 632
 633         if (wpa_parse_wpa_ie(ie, ie_len, &data) < 0) {
 634                 ret = os_snprintf(pos, end - pos, "?]");
 635                 if (ret < 0 || ret >= end - pos)
 636                         return pos;
 637                 pos += ret;
 638                 return pos;
 639         }
 640
 641         first = 1;
 642         if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 643                 ret = os_snprintf(pos, end - pos, "%sEAP", first ? "" : "+");
 644                 if (ret < 0 || ret >= end - pos)
 645                         return pos;
 646                 pos += ret;
 647                 first = 0;
 648         }
 649         if (data.key_mgmt & WPA_KEY_MGMT_PSK) {
 650                 ret = os_snprintf(pos, end - pos, "%sPSK", first ? "" : "+");
 651                 if (ret < 0 || ret >= end - pos)
 652                         return pos;
 653                 pos += ret;
 654                 first = 0;
 655         }
 656         if (data.key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 657                 ret = os_snprintf(pos, end - pos, "%sNone", first ? "" : "+");
 658                 if (ret < 0 || ret >= end - pos)
 659                         return pos;
 660                 pos += ret;
 661                 first = 0;
 662         }
 663 #ifdef CONFIG_IEEE80211R
 664         if (data.key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 665                 ret = os_snprintf(pos, end - pos, "%sFT/EAP",
 666                                   first ? "" : "+");
 667                 if (ret < 0 || ret >= end - pos)
 668                         return pos;
 669                 pos += ret;
 670                 first = 0;
 671         }
 672         if (data.key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 673                 ret = os_snprintf(pos, end - pos, "%sFT/PSK",
 674                                   first ? "" : "+");
 675                 if (ret < 0 || ret >= end - pos)
 676                         return pos;
 677                 pos += ret;
 678                 first = 0;
 679         }
 680 #endif /* CONFIG_IEEE80211R */
 681 #ifdef CONFIG_IEEE80211W
 682         if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 683                 ret = os_snprintf(pos, end - pos, "%sEAP-SHA256",
 684                                   first ? "" : "+");
 685                 if (ret < 0 || ret >= end - pos)
 686                         return pos;
 687                 pos += ret;
 688                 first = 0;
 689         }
 690         if (data.key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 691                 ret = os_snprintf(pos, end - pos, "%sPSK-SHA256",
 692                                   first ? "" : "+");
 693                 if (ret < 0 || ret >= end - pos)
 694                         return pos;
 695                 pos += ret;
 696                 first = 0;
 697         }
 698 #endif /* CONFIG_IEEE80211W */
 699
 700         pos = wpa_supplicant_cipher_txt(pos, end, data.pairwise_cipher);
 701
 702         if (data.capabilities & WPA_CAPABILITY_PREAUTH) {
 703                 ret = os_snprintf(pos, end - pos, "-preauth");
 704                 if (ret < 0 || ret >= end - pos)
 705                         return pos;
 706                 pos += ret;
 707         }
 708
 709         ret = os_snprintf(pos, end - pos, "]");
 710         if (ret < 0 || ret >= end - pos)
 711                 return pos;
 712         pos += ret;
 713
 714         return pos;
 715 }
 716
 717 static char * wpa_supplicant_wps_ie_txt(char *pos, char *end,
 718                                         const struct wpa_scan_res *res)
 719 {
 720 #ifdef CONFIG_WPS
 721         struct wpabuf *wps_ie;
 722         int ret;
 723         const char *txt;
 724
 725         wps_ie = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
 726         if (wps_ie == NULL)
 727                 return pos;
 728
 729         if (wps_is_selected_pbc_registrar(wps_ie))
 730                 txt = "[WPS-PBC]";
 731         else if (wps_is_selected_pin_registrar(wps_ie))
 732                 txt = "[WPS-PIN]";
 733         else
 734                 txt = "[WPS]";
 735
 736         ret = os_snprintf(pos, end - pos, "%s", txt);
 737         if (ret >= 0 && ret < end - pos)
 738                 pos += ret;
 739         wpabuf_free(wps_ie);
 740 #endif /* CONFIG_WPS */
 741
 742         return pos;
 743 }
 744
 745
 746 /* Format one result on one text line into a buffer. */
 747 static int wpa_supplicant_ctrl_iface_scan_result(
 748         const struct wpa_scan_res *res, char *buf, size_t buflen)
 749 {
 750         char *pos, *end;
 751         int ret;
 752         const u8 *ie, *ie2;
 753
 754         pos = buf;
 755         end = buf + buflen;
 756
 757         ret = os_snprintf(pos, end - pos, MACSTR "\t%d\t%d\t",
 758                           MAC2STR(res->bssid), res->freq, res->level);
 759         if (ret < 0 || ret >= end - pos)
 760                 return pos - buf;
 761         pos += ret;
 762         ie = wpa_scan_get_vendor_ie(res, WPA_IE_VENDOR_TYPE);
 763         if (ie)
 764                 pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
 765         ie2 = wpa_scan_get_ie(res, WLAN_EID_RSN);
 766         if (ie2)
 767                 pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
 768         pos = wpa_supplicant_wps_ie_txt(pos, end, res);
 769         if (!ie && !ie2 && res->caps & IEEE80211_CAP_PRIVACY) {
 770                 ret = os_snprintf(pos, end - pos, "[WEP]");
 771                 if (ret < 0 || ret >= end - pos)
 772                         return pos - buf;
 773                 pos += ret;
 774         }
 775         if (res->caps & IEEE80211_CAP_IBSS) {
 776                 ret = os_snprintf(pos, end - pos, "[IBSS]");
 777                 if (ret < 0 || ret >= end - pos)
 778                         return pos - buf;
 779                 pos += ret;
 780         }
 781
 782         ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 783         ret = os_snprintf(pos, end - pos, "\t%s",
 784                           ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
 785         if (ret < 0 || ret >= end - pos)
 786                 return pos - buf;
 787         pos += ret;
 788
 789         ret = os_snprintf(pos, end - pos, "\n");
 790         if (ret < 0 || ret >= end - pos)
 791                 return pos - buf;
 792         pos += ret;
 793
 794         return pos - buf;
 795 }
 796
 797
 798 static int wpa_supplicant_ctrl_iface_scan_results(
 799         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 800 {
 801         char *pos, *end;
 802         struct wpa_scan_res *res;
 803         int ret;
 804         size_t i;
 805
 806         if (wpa_s->scan_res == NULL &&
 807             wpa_supplicant_get_scan_results(wpa_s) < 0)
 808                 return 0;
 809
 810         pos = buf;
 811         end = buf + buflen;
 812         ret = os_snprintf(pos, end - pos, "bssid / frequency / signal level / "
 813                           "flags / ssid\n");
 814         if (ret < 0 || ret >= end - pos)
 815                 return pos - buf;
 816         pos += ret;
 817
 818         for (i = 0; i < wpa_s->scan_res->num; i++) {
 819                 res = wpa_s->scan_res->res[i];
 820                 ret = wpa_supplicant_ctrl_iface_scan_result(res, pos,
 821                                                             end - pos);
 822                 if (ret < 0 || ret >= end - pos)
 823                         return pos - buf;
 824                 pos += ret;
 825         }
 826
 827         return pos - buf;
 828 }
 829
 830
 831 static int wpa_supplicant_ctrl_iface_select_network(
 832         struct wpa_supplicant *wpa_s, char *cmd)
 833 {
 834         int id;
 835         struct wpa_ssid *ssid;
 836
 837         /* cmd: "<network id>" or "any" */
 838         if (os_strcmp(cmd, "any") == 0) {
 839                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SELECT_NETWORK any");
 840                 ssid = NULL;
 841         } else {
 842                 id = atoi(cmd);
 843                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SELECT_NETWORK id=%d", id);
 844
 845                 ssid = wpa_config_get_network(wpa_s->conf, id);
 846                 if (ssid == NULL) {
 847                         wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find "
 848                                    "network id=%d", id);
 849                         return -1;
 850                 }
 851         }
 852
 853         wpa_supplicant_select_network(wpa_s, ssid);
 854
 855         return 0;
 856 }
 857
 858
 859 static int wpa_supplicant_ctrl_iface_enable_network(
 860         struct wpa_supplicant *wpa_s, char *cmd)
 861 {
 862         int id;
 863         struct wpa_ssid *ssid;
 864
 865         /* cmd: "<network id>" or "all" */
 866         if (os_strcmp(cmd, "all") == 0) {
 867                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: ENABLE_NETWORK all");
 868                 ssid = NULL;
 869         } else {
 870                 id = atoi(cmd);
 871                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: ENABLE_NETWORK id=%d", id);
 872
 873                 ssid = wpa_config_get_network(wpa_s->conf, id);
 874                 if (ssid == NULL) {
 875                         wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find "
 876                                    "network id=%d", id);
 877                         return -1;
 878                 }
 879         }
 880         wpa_supplicant_enable_network(wpa_s, ssid);
 881
 882         return 0;
 883 }
 884
 885
 886 static int wpa_supplicant_ctrl_iface_disable_network(
 887         struct wpa_supplicant *wpa_s, char *cmd)
 888 {
 889         int id;
 890         struct wpa_ssid *ssid;
 891
 892         /* cmd: "<network id>" or "all" */
 893         if (os_strcmp(cmd, "all") == 0) {
 894                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: DISABLE_NETWORK all");
 895                 ssid = NULL;
 896         } else {
 897                 id = atoi(cmd);
 898                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: DISABLE_NETWORK id=%d", id);
 899
 900                 ssid = wpa_config_get_network(wpa_s->conf, id);
 901                 if (ssid == NULL) {
 902                         wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find "
 903                                    "network id=%d", id);
 904                         return -1;
 905                 }
 906         }
 907         wpa_supplicant_disable_network(wpa_s, ssid);
 908
 909         return 0;
 910 }
 911
 912
 913 static int wpa_supplicant_ctrl_iface_add_network(
 914         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 915 {
 916         struct wpa_ssid *ssid;
 917         int ret;
 918
 919         wpa_printf(MSG_DEBUG, "CTRL_IFACE: ADD_NETWORK");
 920
 921         ssid = wpa_config_add_network(wpa_s->conf);
 922         if (ssid == NULL)
 923                 return -1;
 924
 925         wpas_notify_network_added(wpa_s, ssid);
 926
 927         ssid->disabled = 1;
 928         wpa_config_set_network_defaults(ssid);
 929
 930         ret = os_snprintf(buf, buflen, "%d\n", ssid->id);
 931         if (ret < 0 || (size_t) ret >= buflen)
 932                 return -1;
 933         return ret;
 934 }
 935
 936
 937 static int wpa_supplicant_ctrl_iface_remove_network(
 938         struct wpa_supplicant *wpa_s, char *cmd)
 939 {
 940         int id;
 941         struct wpa_ssid *ssid;
 942
 943         /* cmd: "<network id>" or "all" */
 944         if (os_strcmp(cmd, "all") == 0) {
 945                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: REMOVE_NETWORK all");
 946                 ssid = wpa_s->conf->ssid;
 947                 while (ssid) {
 948                         struct wpa_ssid *remove_ssid = ssid;
 949                         id = ssid->id;
 950                         ssid = ssid->next;
 951                         wpas_notify_network_removed(wpa_s, remove_ssid);
 952                         wpa_config_remove_network(wpa_s->conf, id);
 953                 }
 954                 if (wpa_s->current_ssid) {
 955                         eapol_sm_invalidate_cached_session(wpa_s->eapol);
 956                         wpa_supplicant_disassociate(wpa_s,
 957                                                     WLAN_REASON_DEAUTH_LEAVING);
 958                 }
 959                 return 0;
 960         }
 961
 962         id = atoi(cmd);
 963         wpa_printf(MSG_DEBUG, "CTRL_IFACE: REMOVE_NETWORK id=%d", id);
 964
 965         ssid = wpa_config_get_network(wpa_s->conf, id);
 966         if (ssid == NULL ||
 967             wpa_config_remove_network(wpa_s->conf, id) < 0) {
 968                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 969                            "id=%d", id);
 970                 return -1;
 971         }
 972
 973         if (ssid == wpa_s->current_ssid) {
 974                 /*
 975                  * Invalidate the EAP session cache if the current network is
 976                  * removed.
 977                  */
 978                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 979
 980                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 981         }
 982
 983         return 0;
 984 }
 985
 986
 987 static int wpa_supplicant_ctrl_iface_set_network(
 988         struct wpa_supplicant *wpa_s, char *cmd)
 989 {
 990         int id;
 991         struct wpa_ssid *ssid;
 992         char *name, *value;
 993
 994         /* cmd: "<network id> <variable name> <value>" */
 995         name = os_strchr(cmd, ' ');
 996         if (name == NULL)
 997                 return -1;
 998         *name++ = '\0';
 999
1000         value = os_strchr(name, ' ');
1001         if (value == NULL)
1002                 return -1;
1003         *value++ = '\0';
1004
1005         id = atoi(cmd);
1006         wpa_printf(MSG_DEBUG, "CTRL_IFACE: SET_NETWORK id=%d name='%s'",
1007                    id, name);
1008         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
1009                               (u8 *) value, os_strlen(value));
1010
1011         ssid = wpa_config_get_network(wpa_s->conf, id);
1012         if (ssid == NULL) {
1013                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
1014                            "id=%d", id);
1015                 return -1;
1016         }
1017
1018         if (wpa_config_set(ssid, name, value, 0) < 0) {
1019                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Failed to set network "
1020                            "variable '%s'", name);
1021                 return -1;
1022         }
1023
1024         if (wpa_s->current_ssid == ssid) {
1025                 /*
1026                  * Invalidate the EAP session cache if anything in the current
1027                  * configuration changes.
1028                  */
1029                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1030         }
1031
1032         if ((os_strcmp(name, "psk") == 0 &&
1033              value[0] == '"' && ssid->ssid_len) ||
1034             (os_strcmp(name, "ssid") == 0 && ssid->passphrase))
1035                 wpa_config_update_psk(ssid);
1036
1037         return 0;
1038 }
1039
1040
1041 static int wpa_supplicant_ctrl_iface_get_network(
1042         struct wpa_supplicant *wpa_s, char *cmd, char *buf, size_t buflen)
1043 {
1044         int id;
1045         size_t res;
1046         struct wpa_ssid *ssid;
1047         char *name, *value;
1048
1049         /* cmd: "<network id> <variable name>" */
1050         name = os_strchr(cmd, ' ');
1051         if (name == NULL || buflen == 0)
1052                 return -1;
1053         *name++ = '\0';
1054
1055         id = atoi(cmd);
1056         wpa_printf(MSG_DEBUG, "CTRL_IFACE: GET_NETWORK id=%d name='%s'",
1057                    id, name);
1058
1059         ssid = wpa_config_get_network(wpa_s->conf, id);
1060         if (ssid == NULL) {
1061                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
1062                            "id=%d", id);
1063                 return -1;
1064         }
1065
1066         value = wpa_config_get_no_key(ssid, name);
1067         if (value == NULL) {
1068                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Failed to get network "
1069                            "variable '%s'", name);
1070                 return -1;
1071         }
1072
1073         res = os_strlcpy(buf, value, buflen);
1074         if (res >= buflen) {
1075                 os_free(value);
1076                 return -1;
1077         }
1078
1079         os_free(value);
1080
1081         return res;
1082 }
1083
1084
1085 #ifndef CONFIG_NO_CONFIG_WRITE
1086 static int wpa_supplicant_ctrl_iface_save_config(struct wpa_supplicant *wpa_s)
1087 {
1088         int ret;
1089
1090         if (!wpa_s->conf->update_config) {
1091                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Not allowed "
1092                            "to update configuration (update_config=0)");
1093                 return -1;
1094         }
1095
1096         ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
1097         if (ret) {
1098                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Failed to "
1099                            "update configuration");
1100         } else {
1101                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Configuration"
1102                            " updated");
1103         }
1104
1105         return ret;
1106 }
1107 #endif /* CONFIG_NO_CONFIG_WRITE */
1108
1109
1110 static int ctrl_iface_get_capability_pairwise(int res, char *strict,
1111                                               struct wpa_driver_capa *capa,
1112                                               char *buf, size_t buflen)
1113 {
1114         int ret, first = 1;
1115         char *pos, *end;
1116         size_t len;
1117
1118         pos = buf;
1119         end = pos + buflen;
1120
1121         if (res < 0) {
1122                 if (strict)
1123                         return 0;
1124                 len = os_strlcpy(buf, "CCMP TKIP NONE", buflen);
1125                 if (len >= buflen)
1126                         return -1;
1127                 return len;
1128         }
1129
1130         if (capa->enc & WPA_DRIVER_CAPA_ENC_CCMP) {
1131                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : " ");
1132                 if (ret < 0 || ret >= end - pos)
1133                         return pos - buf;
1134                 pos += ret;
1135                 first = 0;
1136         }
1137
1138         if (capa->enc & WPA_DRIVER_CAPA_ENC_TKIP) {
1139                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : " ");
1140                 if (ret < 0 || ret >= end - pos)
1141                         return pos - buf;
1142                 pos += ret;
1143                 first = 0;
1144         }
1145
1146         if (capa->key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
1147                 ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : " ");
1148                 if (ret < 0 || ret >= end - pos)
1149                         return pos - buf;
1150                 pos += ret;
1151                 first = 0;
1152         }
1153
1154         return pos - buf;
1155 }
1156
1157
1158 static int ctrl_iface_get_capability_group(int res, char *strict,
1159                                            struct wpa_driver_capa *capa,
1160                                            char *buf, size_t buflen)
1161 {
1162         int ret, first = 1;
1163         char *pos, *end;
1164         size_t len;
1165
1166         pos = buf;
1167         end = pos + buflen;
1168
1169         if (res < 0) {
1170                 if (strict)
1171                         return 0;
1172                 len = os_strlcpy(buf, "CCMP TKIP WEP104 WEP40", buflen);
1173                 if (len >= buflen)
1174                         return -1;
1175                 return len;
1176         }
1177
1178         if (capa->enc & WPA_DRIVER_CAPA_ENC_CCMP) {
1179                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : " ");
1180                 if (ret < 0 || ret >= end - pos)
1181                         return pos - buf;
1182                 pos += ret;
1183                 first = 0;
1184         }
1185
1186         if (capa->enc & WPA_DRIVER_CAPA_ENC_TKIP) {
1187                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : " ");
1188                 if (ret < 0 || ret >= end - pos)
1189                         return pos - buf;
1190                 pos += ret;
1191                 first = 0;
1192         }
1193
1194         if (capa->enc & WPA_DRIVER_CAPA_ENC_WEP104) {
1195                 ret = os_snprintf(pos, end - pos, "%sWEP104",
1196                                   first ? "" : " ");
1197                 if (ret < 0 || ret >= end - pos)
1198                         return pos - buf;
1199                 pos += ret;
1200                 first = 0;
1201         }
1202
1203         if (capa->enc & WPA_DRIVER_CAPA_ENC_WEP40) {
1204                 ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : " ");
1205                 if (ret < 0 || ret >= end - pos)
1206                         return pos - buf;
1207                 pos += ret;
1208                 first = 0;
1209         }
1210
1211         return pos - buf;
1212 }
1213
1214
1215 static int ctrl_iface_get_capability_key_mgmt(int res, char *strict,
1216                                               struct wpa_driver_capa *capa,
1217                                               char *buf, size_t buflen)
1218 {
1219         int ret;
1220         char *pos, *end;
1221         size_t len;
1222
1223         pos = buf;
1224         end = pos + buflen;
1225
1226         if (res < 0) {
1227                 if (strict)
1228                         return 0;
1229                 len = os_strlcpy(buf, "WPA-PSK WPA-EAP IEEE8021X WPA-NONE "
1230                                  "NONE", buflen);
1231                 if (len >= buflen)
1232                         return -1;
1233                 return len;
1234         }
1235
1236         ret = os_snprintf(pos, end - pos, "NONE IEEE8021X");
1237         if (ret < 0 || ret >= end - pos)
1238                 return pos - buf;
1239         pos += ret;
1240
1241         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1242                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2)) {
1243                 ret = os_snprintf(pos, end - pos, " WPA-EAP");
1244                 if (ret < 0 || ret >= end - pos)
1245                         return pos - buf;
1246                 pos += ret;
1247         }
1248
1249         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1250                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
1251                 ret = os_snprintf(pos, end - pos, " WPA-PSK");
1252                 if (ret < 0 || ret >= end - pos)
1253                         return pos - buf;
1254                 pos += ret;
1255         }
1256
1257         if (capa->key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
1258                 ret = os_snprintf(pos, end - pos, " WPA-NONE");
1259                 if (ret < 0 || ret >= end - pos)
1260                         return pos - buf;
1261                 pos += ret;
1262         }
1263
1264         return pos - buf;
1265 }
1266
1267
1268 static int ctrl_iface_get_capability_proto(int res, char *strict,
1269                                            struct wpa_driver_capa *capa,
1270                                            char *buf, size_t buflen)
1271 {
1272         int ret, first = 1;
1273         char *pos, *end;
1274         size_t len;
1275
1276         pos = buf;
1277         end = pos + buflen;
1278
1279         if (res < 0) {
1280                 if (strict)
1281                         return 0;
1282                 len = os_strlcpy(buf, "RSN WPA", buflen);
1283                 if (len >= buflen)
1284                         return -1;
1285                 return len;
1286         }
1287
1288         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1289                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
1290                 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
1291                 if (ret < 0 || ret >= end - pos)
1292                         return pos - buf;
1293                 pos += ret;
1294                 first = 0;
1295         }
1296
1297         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1298                               WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK)) {
1299                 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
1300                 if (ret < 0 || ret >= end - pos)
1301                         return pos - buf;
1302                 pos += ret;
1303                 first = 0;
1304         }
1305
1306         return pos - buf;
1307 }
1308
1309
1310 static int ctrl_iface_get_capability_auth_alg(int res, char *strict,
1311                                               struct wpa_driver_capa *capa,
1312                                               char *buf, size_t buflen)
1313 {
1314         int ret, first = 1;
1315         char *pos, *end;
1316         size_t len;
1317
1318         pos = buf;
1319         end = pos + buflen;
1320
1321         if (res < 0) {
1322                 if (strict)
1323                         return 0;
1324                 len = os_strlcpy(buf, "OPEN SHARED LEAP", buflen);
1325                 if (len >= buflen)
1326                         return -1;
1327                 return len;
1328         }
1329
1330         if (capa->auth & (WPA_DRIVER_AUTH_OPEN)) {
1331                 ret = os_snprintf(pos, end - pos, "%sOPEN", first ? "" : " ");
1332                 if (ret < 0 || ret >= end - pos)
1333                         return pos - buf;
1334                 pos += ret;
1335                 first = 0;
1336         }
1337
1338         if (capa->auth & (WPA_DRIVER_AUTH_SHARED)) {
1339                 ret = os_snprintf(pos, end - pos, "%sSHARED",
1340                                   first ? "" : " ");
1341                 if (ret < 0 || ret >= end - pos)
1342                         return pos - buf;
1343                 pos += ret;
1344                 first = 0;
1345         }
1346
1347         if (capa->auth & (WPA_DRIVER_AUTH_LEAP)) {
1348                 ret = os_snprintf(pos, end - pos, "%sLEAP", first ? "" : " ");
1349                 if (ret < 0 || ret >= end - pos)
1350                         return pos - buf;
1351                 pos += ret;
1352                 first = 0;
1353         }
1354
1355         return pos - buf;
1356 }
1357
1358
1359 static int wpa_supplicant_ctrl_iface_get_capability(
1360         struct wpa_supplicant *wpa_s, const char *_field, char *buf,
1361         size_t buflen)
1362 {
1363         struct wpa_driver_capa capa;
1364         int res;
1365         char *strict;
1366         char field[30];
1367         size_t len;
1368
1369         /* Determine whether or not strict checking was requested */
1370         len = os_strlcpy(field, _field, sizeof(field));
1371         if (len >= sizeof(field))
1372                 return -1;
1373         strict = os_strchr(field, ' ');
1374         if (strict != NULL) {
1375                 *strict++ = '\0';
1376                 if (os_strcmp(strict, "strict") != 0)
1377                         return -1;
1378         }
1379
1380         wpa_printf(MSG_DEBUG, "CTRL_IFACE: GET_CAPABILITY '%s' %s",
1381                 field, strict ? strict : "");
1382
1383         if (os_strcmp(field, "eap") == 0) {
1384                 return eap_get_names(buf, buflen);
1385         }
1386
1387         res = wpa_drv_get_capa(wpa_s, &capa);
1388
1389         if (os_strcmp(field, "pairwise") == 0)
1390                 return ctrl_iface_get_capability_pairwise(res, strict, &capa,
1391                                                           buf, buflen);
1392
1393         if (os_strcmp(field, "group") == 0)
1394                 return ctrl_iface_get_capability_group(res, strict, &capa,
1395                                                        buf, buflen);
1396
1397         if (os_strcmp(field, "key_mgmt") == 0)
1398                 return ctrl_iface_get_capability_key_mgmt(res, strict, &capa,
1399                                                           buf, buflen);
1400
1401         if (os_strcmp(field, "proto") == 0)
1402                 return ctrl_iface_get_capability_proto(res, strict, &capa,
1403                                                        buf, buflen);
1404
1405         if (os_strcmp(field, "auth_alg") == 0)
1406                 return ctrl_iface_get_capability_auth_alg(res, strict, &capa,
1407                                                           buf, buflen);
1408
1409         wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown GET_CAPABILITY field '%s'",
1410                    field);
1411
1412         return -1;
1413 }
1414
1415
1416 static int wpa_supplicant_ctrl_iface_bss(struct wpa_supplicant *wpa_s,
1417                                          const char *cmd, char *buf,
1418                                          size_t buflen)
1419 {
1420         u8 bssid[ETH_ALEN];
1421         size_t i;
1422         struct wpa_scan_results *results;
1423         struct wpa_scan_res *bss;
1424         int ret;
1425         char *pos, *end;
1426         const u8 *ie, *ie2;
1427
1428         if (wpa_s->scan_res == NULL &&
1429             wpa_supplicant_get_scan_results(wpa_s) < 0)
1430                 return 0;
1431
1432         results = wpa_s->scan_res;
1433         if (results == NULL)
1434                 return 0;
1435
1436         if (hwaddr_aton(cmd, bssid) == 0) {
1437                 for (i = 0; i < results->num; i++) {
1438                         if (os_memcmp(bssid, results->res[i]->bssid, ETH_ALEN)
1439                             == 0)
1440                                 break;
1441                 }
1442         } else
1443                 i = atoi(cmd);
1444
1445         if (i >= results->num || results->res[i] == NULL)
1446                 return 0; /* no match found */
1447
1448         bss = results->res[i];
1449         pos = buf;
1450         end = buf + buflen;
1451         ret = os_snprintf(pos, end - pos,
1452                           "bssid=" MACSTR "\n"
1453                           "freq=%d\n"
1454                           "beacon_int=%d\n"
1455                           "capabilities=0x%04x\n"
1456                           "qual=%d\n"
1457                           "noise=%d\n"
1458                           "level=%d\n"
1459                           "tsf=%016llu\n"
1460                           "ie=",
1461                           MAC2STR(bss->bssid), bss->freq, bss->beacon_int,
1462                           bss->caps, bss->qual, bss->noise, bss->level,
1463                           (unsigned long long) bss->tsf);
1464         if (ret < 0 || ret >= end - pos)
1465                 return pos - buf;
1466         pos += ret;
1467
1468         ie = (const u8 *) (bss + 1);
1469         for (i = 0; i < bss->ie_len; i++) {
1470                 ret = os_snprintf(pos, end - pos, "%02x", *ie++);
1471                 if (ret < 0 || ret >= end - pos)
1472                         return pos - buf;
1473                 pos += ret;
1474         }
1475
1476         ret = os_snprintf(pos, end - pos, "\n");
1477         if (ret < 0 || ret >= end - pos)
1478                 return pos - buf;
1479         pos += ret;
1480
1481         ret = os_snprintf(pos, end - pos, "flags=");
1482         if (ret < 0 || ret >= end - pos)
1483                 return pos - buf;
1484         pos += ret;
1485
1486         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
1487         if (ie)
1488                 pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
1489         ie2 = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1490         if (ie2)
1491                 pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
1492         pos = wpa_supplicant_wps_ie_txt(pos, end, bss);
1493         if (!ie && !ie2 && bss->caps & IEEE80211_CAP_PRIVACY) {
1494                 ret = os_snprintf(pos, end - pos, "[WEP]");
1495                 if (ret < 0 || ret >= end - pos)
1496                         return pos - buf;
1497                 pos += ret;
1498         }
1499         if (bss->caps & IEEE80211_CAP_IBSS) {
1500                 ret = os_snprintf(pos, end - pos, "[IBSS]");
1501                 if (ret < 0 || ret >= end - pos)
1502                         return pos - buf;
1503                 pos += ret;
1504         }
1505
1506         ret = os_snprintf(pos, end - pos, "\n");
1507         if (ret < 0 || ret >= end - pos)
1508                 return pos - buf;
1509         pos += ret;
1510
1511         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1512         ret = os_snprintf(pos, end - pos, "ssid=%s\n",
1513                           ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
1514         if (ret < 0 || ret >= end - pos)
1515                 return pos - buf;
1516         pos += ret;
1517
1518 #ifdef CONFIG_WPS
1519         ie = (const u8 *) (bss + 1);
1520         ret = wpas_wps_scan_result_text(ie, bss->ie_len, pos, end);
1521         if (ret < 0 || ret >= end - pos)
1522                 return pos - buf;
1523         pos += ret;
1524 #endif /* CONFIG_WPS */
1525
1526         return pos - buf;
1527 }
1528
1529
1530 static int wpa_supplicant_ctrl_iface_ap_scan(
1531         struct wpa_supplicant *wpa_s, char *cmd)
1532 {
1533         int ap_scan = atoi(cmd);
1534         return wpa_supplicant_set_ap_scan(wpa_s, ap_scan);
1535 }
1536
1537
1538 char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
1539                                          char *buf, size_t *resp_len)
1540 {
1541         char *reply;
1542         const int reply_size = 2048;
1543         int ctrl_rsp = 0;
1544         int reply_len;
1545
1546         if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0 ||
1547             os_strncmp(buf, "SET_NETWORK ", 12) == 0) {
1548                 wpa_hexdump_ascii_key(MSG_DEBUG, "RX ctrl_iface",
1549                                       (const u8 *) buf, os_strlen(buf));
1550         } else {
1551                 wpa_hexdump_ascii(MSG_DEBUG, "RX ctrl_iface",
1552                                   (const u8 *) buf, os_strlen(buf));
1553         }
1554
1555         reply = os_malloc(reply_size);
1556         if (reply == NULL) {
1557                 *resp_len = 1;
1558                 return NULL;
1559         }
1560
1561         os_memcpy(reply, "OK\n", 3);
1562         reply_len = 3;
1563
1564         if (os_strcmp(buf, "PING") == 0) {
1565                 os_memcpy(reply, "PONG\n", 5);
1566                 reply_len = 5;
1567         } else if (os_strcmp(buf, "MIB") == 0) {
1568                 reply_len = wpa_sm_get_mib(wpa_s->wpa, reply, reply_size);
1569                 if (reply_len >= 0) {
1570                         int res;
1571                         res = eapol_sm_get_mib(wpa_s->eapol, reply + reply_len,
1572                                                reply_size - reply_len);
1573                         if (res < 0)
1574                                 reply_len = -1;
1575                         else
1576                                 reply_len += res;
1577                 }
1578         } else if (os_strncmp(buf, "STATUS", 6) == 0) {
1579                 reply_len = wpa_supplicant_ctrl_iface_status(
1580                         wpa_s, buf + 6, reply, reply_size);
1581         } else if (os_strcmp(buf, "PMKSA") == 0) {
1582                 reply_len = wpa_sm_pmksa_cache_list(wpa_s->wpa, reply,
1583                                                     reply_size);
1584         } else if (os_strncmp(buf, "SET ", 4) == 0) {
1585                 if (wpa_supplicant_ctrl_iface_set(wpa_s, buf + 4))
1586                         reply_len = -1;
1587         } else if (os_strcmp(buf, "LOGON") == 0) {
1588                 eapol_sm_notify_logoff(wpa_s->eapol, FALSE);
1589         } else if (os_strcmp(buf, "LOGOFF") == 0) {
1590                 eapol_sm_notify_logoff(wpa_s->eapol, TRUE);
1591         } else if (os_strcmp(buf, "REASSOCIATE") == 0) {
1592                 wpa_s->disconnected = 0;
1593                 wpa_s->reassociate = 1;
1594                 wpa_supplicant_req_scan(wpa_s, 0, 0);
1595         } else if (os_strcmp(buf, "RECONNECT") == 0) {
1596                 if (wpa_s->disconnected) {
1597                         wpa_s->disconnected = 0;
1598                         wpa_s->reassociate = 1;
1599                         wpa_supplicant_req_scan(wpa_s, 0, 0);
1600                 }
1601 #ifdef IEEE8021X_EAPOL
1602         } else if (os_strncmp(buf, "PREAUTH ", 8) == 0) {
1603                 if (wpa_supplicant_ctrl_iface_preauth(wpa_s, buf + 8))
1604                         reply_len = -1;
1605 #endif /* IEEE8021X_EAPOL */
1606 #ifdef CONFIG_PEERKEY
1607         } else if (os_strncmp(buf, "STKSTART ", 9) == 0) {
1608                 if (wpa_supplicant_ctrl_iface_stkstart(wpa_s, buf + 9))
1609                         reply_len = -1;
1610 #endif /* CONFIG_PEERKEY */
1611 #ifdef CONFIG_IEEE80211R
1612         } else if (os_strncmp(buf, "FT_DS ", 6) == 0) {
1613                 if (wpa_supplicant_ctrl_iface_ft_ds(wpa_s, buf + 6))
1614                         reply_len = -1;
1615 #endif /* CONFIG_IEEE80211R */
1616 #ifdef CONFIG_WPS
1617         } else if (os_strcmp(buf, "WPS_PBC") == 0) {
1618                 if (wpa_supplicant_ctrl_iface_wps_pbc(wpa_s, NULL))
1619                         reply_len = -1;
1620         } else if (os_strncmp(buf, "WPS_PBC ", 8) == 0) {
1621                 if (wpa_supplicant_ctrl_iface_wps_pbc(wpa_s, buf + 8))
1622                         reply_len = -1;
1623         } else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
1624                 reply_len = wpa_supplicant_ctrl_iface_wps_pin(wpa_s, buf + 8,
1625                                                               reply,
1626                                                               reply_size);
1627 #ifdef CONFIG_WPS_OOB
1628         } else if (os_strncmp(buf, "WPS_OOB ", 8) == 0) {
1629                 if (wpa_supplicant_ctrl_iface_wps_oob(wpa_s, buf + 8))
1630                         reply_len = -1;
1631 #endif /* CONFIG_WPS_OOB */
1632         } else if (os_strncmp(buf, "WPS_REG ", 8) == 0) {
1633                 if (wpa_supplicant_ctrl_iface_wps_reg(wpa_s, buf + 8))
1634                         reply_len = -1;
1635 #endif /* CONFIG_WPS */
1636 #ifdef CONFIG_IBSS_RSN
1637         } else if (os_strncmp(buf, "IBSS_RSN ", 9) == 0) {
1638                 if (wpa_supplicant_ctrl_iface_ibss_rsn(wpa_s, buf + 9))
1639                         reply_len = -1;
1640 #endif /* CONFIG_IBSS_RSN */
1641         } else if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0)
1642         {
1643                 if (wpa_supplicant_ctrl_iface_ctrl_rsp(
1644                             wpa_s, buf + os_strlen(WPA_CTRL_RSP)))
1645                         reply_len = -1;
1646                 else
1647                         ctrl_rsp = 1;
1648         } else if (os_strcmp(buf, "RECONFIGURE") == 0) {
1649                 if (wpa_supplicant_reload_configuration(wpa_s))
1650                         reply_len = -1;
1651         } else if (os_strcmp(buf, "TERMINATE") == 0) {
1652                 eloop_terminate();
1653         } else if (os_strncmp(buf, "BSSID ", 6) == 0) {
1654                 if (wpa_supplicant_ctrl_iface_bssid(wpa_s, buf + 6))
1655                         reply_len = -1;
1656         } else if (os_strcmp(buf, "LIST_NETWORKS") == 0) {
1657                 reply_len = wpa_supplicant_ctrl_iface_list_networks(
1658                         wpa_s, reply, reply_size);
1659         } else if (os_strcmp(buf, "DISCONNECT") == 0) {
1660                 wpa_s->reassociate = 0;
1661                 wpa_s->disconnected = 1;
1662                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1663         } else if (os_strcmp(buf, "SCAN") == 0) {
1664                 wpa_s->scan_req = 2;
1665                 wpa_supplicant_req_scan(wpa_s, 0, 0);
1666         } else if (os_strcmp(buf, "SCAN_RESULTS") == 0) {
1667                 reply_len = wpa_supplicant_ctrl_iface_scan_results(
1668                         wpa_s, reply, reply_size);
1669         } else if (os_strncmp(buf, "SELECT_NETWORK ", 15) == 0) {
1670                 if (wpa_supplicant_ctrl_iface_select_network(wpa_s, buf + 15))
1671                         reply_len = -1;
1672         } else if (os_strncmp(buf, "ENABLE_NETWORK ", 15) == 0) {
1673                 if (wpa_supplicant_ctrl_iface_enable_network(wpa_s, buf + 15))
1674                         reply_len = -1;
1675         } else if (os_strncmp(buf, "DISABLE_NETWORK ", 16) == 0) {
1676                 if (wpa_supplicant_ctrl_iface_disable_network(wpa_s, buf + 16))
1677                         reply_len = -1;
1678         } else if (os_strcmp(buf, "ADD_NETWORK") == 0) {
1679                 reply_len = wpa_supplicant_ctrl_iface_add_network(
1680                         wpa_s, reply, reply_size);
1681         } else if (os_strncmp(buf, "REMOVE_NETWORK ", 15) == 0) {
1682                 if (wpa_supplicant_ctrl_iface_remove_network(wpa_s, buf + 15))
1683                         reply_len = -1;
1684         } else if (os_strncmp(buf, "SET_NETWORK ", 12) == 0) {
1685                 if (wpa_supplicant_ctrl_iface_set_network(wpa_s, buf + 12))
1686                         reply_len = -1;
1687         } else if (os_strncmp(buf, "GET_NETWORK ", 12) == 0) {
1688                 reply_len = wpa_supplicant_ctrl_iface_get_network(
1689                         wpa_s, buf + 12, reply, reply_size);
1690 #ifndef CONFIG_NO_CONFIG_WRITE
1691         } else if (os_strcmp(buf, "SAVE_CONFIG") == 0) {
1692                 if (wpa_supplicant_ctrl_iface_save_config(wpa_s))
1693                         reply_len = -1;
1694 #endif /* CONFIG_NO_CONFIG_WRITE */
1695         } else if (os_strncmp(buf, "GET_CAPABILITY ", 15) == 0) {
1696                 reply_len = wpa_supplicant_ctrl_iface_get_capability(
1697                         wpa_s, buf + 15, reply, reply_size);
1698         } else if (os_strncmp(buf, "AP_SCAN ", 8) == 0) {
1699                 if (wpa_supplicant_ctrl_iface_ap_scan(wpa_s, buf + 8))
1700                         reply_len = -1;
1701         } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
1702                 reply_len = wpa_supplicant_global_iface_list(
1703                         wpa_s->global, reply, reply_size);
1704         } else if (os_strcmp(buf, "INTERFACES") == 0) {
1705                 reply_len = wpa_supplicant_global_iface_interfaces(
1706                         wpa_s->global, reply, reply_size);
1707         } else if (os_strncmp(buf, "BSS ", 4) == 0) {
1708                 reply_len = wpa_supplicant_ctrl_iface_bss(
1709                         wpa_s, buf + 4, reply, reply_size);
1710 #ifdef CONFIG_AP
1711         } else if (os_strcmp(buf, "STA-FIRST") == 0) {
1712                 reply_len = ap_ctrl_iface_sta_first(wpa_s, reply, reply_size);
1713         } else if (os_strncmp(buf, "STA ", 4) == 0) {
1714                 reply_len = ap_ctrl_iface_sta(wpa_s, buf + 4, reply,
1715                                               reply_size);
1716         } else if (os_strncmp(buf, "STA-NEXT ", 9) == 0) {
1717                 reply_len = ap_ctrl_iface_sta_next(wpa_s, buf + 9, reply,
1718                                                    reply_size);
1719 #endif /* CONFIG_AP */
1720         } else {
1721                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1722                 reply_len = 16;
1723         }
1724
1725         if (reply_len < 0) {
1726                 os_memcpy(reply, "FAIL\n", 5);
1727                 reply_len = 5;
1728         }
1729
1730         if (ctrl_rsp)
1731                 eapol_sm_notify_ctrl_response(wpa_s->eapol);
1732
1733         *resp_len = reply_len;
1734         return reply;
1735 }
1736
1737
1738 static int wpa_supplicant_global_iface_add(struct wpa_global *global,
1739                                            char *cmd)
1740 {
1741         struct wpa_interface iface;
1742         char *pos;
1743
1744         /*
1745          * <ifname>TAB<confname>TAB<driver>TAB<ctrl_interface>TAB<driver_param>
1746          * TAB<bridge_ifname>
1747          */
1748         wpa_printf(MSG_DEBUG, "CTRL_IFACE GLOBAL INTERFACE_ADD '%s'", cmd);
1749
1750         os_memset(&iface, 0, sizeof(iface));
1751
1752         do {
1753                 iface.ifname = pos = cmd;
1754                 pos = os_strchr(pos, '\t');
1755                 if (pos)
1756                         *pos++ = '\0';
1757                 if (iface.ifname[0] == '\0')
1758                         return -1;
1759                 if (pos == NULL)
1760                         break;
1761
1762                 iface.confname = pos;
1763                 pos = os_strchr(pos, '\t');
1764                 if (pos)
1765                         *pos++ = '\0';
1766                 if (iface.confname[0] == '\0')
1767                         iface.confname = NULL;
1768                 if (pos == NULL)
1769                         break;
1770
1771                 iface.driver = pos;
1772                 pos = os_strchr(pos, '\t');
1773                 if (pos)
1774                         *pos++ = '\0';
1775                 if (iface.driver[0] == '\0')
1776                         iface.driver = NULL;
1777                 if (pos == NULL)
1778                         break;
1779
1780                 iface.ctrl_interface = pos;
1781                 pos = os_strchr(pos, '\t');
1782                 if (pos)
1783                         *pos++ = '\0';
1784                 if (iface.ctrl_interface[0] == '\0')
1785                         iface.ctrl_interface = NULL;
1786                 if (pos == NULL)
1787                         break;
1788
1789                 iface.driver_param = pos;
1790                 pos = os_strchr(pos, '\t');
1791                 if (pos)
1792                         *pos++ = '\0';
1793                 if (iface.driver_param[0] == '\0')
1794                         iface.driver_param = NULL;
1795                 if (pos == NULL)
1796                         break;
1797
1798                 iface.bridge_ifname = pos;
1799                 pos = os_strchr(pos, '\t');
1800                 if (pos)
1801                         *pos++ = '\0';
1802                 if (iface.bridge_ifname[0] == '\0')
1803                         iface.bridge_ifname = NULL;
1804                 if (pos == NULL)
1805                         break;
1806         } while (0);
1807
1808         if (wpa_supplicant_get_iface(global, iface.ifname))
1809                 return -1;
1810
1811         return wpa_supplicant_add_iface(global, &iface) ? 0 : -1;
1812 }
1813
1814
1815 static int wpa_supplicant_global_iface_remove(struct wpa_global *global,
1816                                               char *cmd)
1817 {
1818         struct wpa_supplicant *wpa_s;
1819
1820         wpa_printf(MSG_DEBUG, "CTRL_IFACE GLOBAL INTERFACE_REMOVE '%s'", cmd);
1821
1822         wpa_s = wpa_supplicant_get_iface(global, cmd);
1823         if (wpa_s == NULL)
1824                 return -1;
1825         return wpa_supplicant_remove_iface(global, wpa_s);
1826 }
1827
1828
1829 static void wpa_free_iface_info(struct wpa_interface_info *iface)
1830 {
1831         struct wpa_interface_info *prev;
1832
1833         while (iface) {
1834                 prev = iface;
1835                 iface = iface->next;
1836
1837                 os_free(prev->ifname);
1838                 os_free(prev->desc);
1839                 os_free(prev);
1840         }
1841 }
1842
1843
1844 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
1845                                             char *buf, int len)
1846 {
1847         int i, res;
1848         struct wpa_interface_info *iface = NULL, *last = NULL, *tmp;
1849         char *pos, *end;
1850
1851         for (i = 0; wpa_drivers[i]; i++) {
1852                 struct wpa_driver_ops *drv = wpa_drivers[i];
1853                 if (drv->get_interfaces == NULL)
1854                         continue;
1855                 tmp = drv->get_interfaces(global->drv_priv);
1856                 if (tmp == NULL)
1857                         continue;
1858
1859                 if (last == NULL)
1860                         iface = last = tmp;
1861                 else
1862                         last->next = tmp;
1863                 while (last->next)
1864                         last = last->next;
1865         }
1866
1867         pos = buf;
1868         end = buf + len;
1869         for (tmp = iface; tmp; tmp = tmp->next) {
1870                 res = os_snprintf(pos, end - pos, "%s\t%s\t%s\n",
1871                                   tmp->drv_name, tmp->ifname,
1872                                   tmp->desc ? tmp->desc : "");
1873                 if (res < 0 || res >= end - pos) {
1874                         *pos = '\0';
1875                         break;
1876                 }
1877                 pos += res;
1878         }
1879
1880         wpa_free_iface_info(iface);
1881
1882         return pos - buf;
1883 }
1884
1885
1886 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
1887                                                   char *buf, int len)
1888 {
1889         int res;
1890         char *pos, *end;
1891         struct wpa_supplicant *wpa_s;
1892
1893         wpa_s = global->ifaces;
1894         pos = buf;
1895         end = buf + len;
1896
1897         while (wpa_s) {
1898                 res = os_snprintf(pos, end - pos, "%s\n", wpa_s->ifname);
1899                 if (res < 0 || res >= end - pos) {
1900                         *pos = '\0';
1901                         break;
1902                 }
1903                 pos += res;
1904                 wpa_s = wpa_s->next;
1905         }
1906         return pos - buf;
1907 }
1908
1909
1910 char * wpa_supplicant_global_ctrl_iface_process(struct wpa_global *global,
1911                                                 char *buf, size_t *resp_len)
1912 {
1913         char *reply;
1914         const int reply_size = 2048;
1915         int reply_len;
1916
1917         wpa_hexdump_ascii(MSG_DEBUG, "RX global ctrl_iface",
1918                           (const u8 *) buf, os_strlen(buf));
1919
1920         reply = os_malloc(reply_size);
1921         if (reply == NULL) {
1922                 *resp_len = 1;
1923                 return NULL;
1924         }
1925
1926         os_memcpy(reply, "OK\n", 3);
1927         reply_len = 3;
1928
1929         if (os_strcmp(buf, "PING") == 0) {
1930                 os_memcpy(reply, "PONG\n", 5);
1931                 reply_len = 5;
1932         } else if (os_strncmp(buf, "INTERFACE_ADD ", 14) == 0) {
1933                 if (wpa_supplicant_global_iface_add(global, buf + 14))
1934                         reply_len = -1;
1935         } else if (os_strncmp(buf, "INTERFACE_REMOVE ", 17) == 0) {
1936                 if (wpa_supplicant_global_iface_remove(global, buf + 17))
1937                         reply_len = -1;
1938         } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
1939                 reply_len = wpa_supplicant_global_iface_list(
1940                         global, reply, reply_size);
1941         } else if (os_strcmp(buf, "INTERFACES") == 0) {
1942                 reply_len = wpa_supplicant_global_iface_interfaces(
1943                         global, reply, reply_size);
1944         } else if (os_strcmp(buf, "TERMINATE") == 0) {
1945                 eloop_terminate();
1946         } else {
1947                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1948                 reply_len = 16;
1949         }
1950
1951         if (reply_len < 0) {
1952                 os_memcpy(reply, "FAIL\n", 5);
1953                 reply_len = 5;
1954         }
1955
1956         *resp_len = reply_len;
1957         return reply;
1958 }