wpa_supplicant/ctrl_iface.c

   1 /*
   2  * WPA Supplicant / Control interface (shared code for all backends)
   3  * Copyright (c) 2004-2008, 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 "ctrl_iface.h"
  24 #include "l2_packet/l2_packet.h"
  25 #include "preauth.h"
  26 #include "pmksa_cache.h"
  27 #include "wpa_ctrl.h"
  28 #include "eap_peer/eap.h"
  29 #include "ieee802_11_defs.h"
  30 #include "wps_supplicant.h"
  31 #include "wps/wps.h"
  32
  33 extern struct wpa_driver_ops *wpa_supplicant_drivers[];
  34
  35 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
  36                                             char *buf, int len);
  37 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
  38                                                   char *buf, int len);
  39
  40
  41 static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
  42                                          char *cmd)
  43 {
  44         char *value;
  45         int ret = 0;
  46
  47         value = os_strchr(cmd, ' ');
  48         if (value == NULL)
  49                 return -1;
  50         *value++ = '\0';
  51
  52         wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
  53         if (os_strcasecmp(cmd, "EAPOL::heldPeriod") == 0) {
  54                 eapol_sm_configure(wpa_s->eapol,
  55                                    atoi(value), -1, -1, -1);
  56         } else if (os_strcasecmp(cmd, "EAPOL::authPeriod") == 0) {
  57                 eapol_sm_configure(wpa_s->eapol,
  58                                    -1, atoi(value), -1, -1);
  59         } else if (os_strcasecmp(cmd, "EAPOL::startPeriod") == 0) {
  60                 eapol_sm_configure(wpa_s->eapol,
  61                                    -1, -1, atoi(value), -1);
  62         } else if (os_strcasecmp(cmd, "EAPOL::maxStart") == 0) {
  63                 eapol_sm_configure(wpa_s->eapol,
  64                                    -1, -1, -1, atoi(value));
  65         } else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKLifetime") == 0) {
  66                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
  67                                      atoi(value)))
  68                         ret = -1;
  69         } else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKReauthThreshold") ==
  70                    0) {
  71                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
  72                                      atoi(value)))
  73                         ret = -1;
  74         } else if (os_strcasecmp(cmd, "dot11RSNAConfigSATimeout") == 0) {
  75                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, atoi(value)))
  76                         ret = -1;
  77         } else
  78                 ret = -1;
  79
  80         return ret;
  81 }
  82
  83
  84 #ifdef IEEE8021X_EAPOL
  85 static int wpa_supplicant_ctrl_iface_preauth(struct wpa_supplicant *wpa_s,
  86                                              char *addr)
  87 {
  88         u8 bssid[ETH_ALEN];
  89         struct wpa_ssid *ssid = wpa_s->current_ssid;
  90
  91         if (hwaddr_aton(addr, bssid)) {
  92                 wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH: invalid address "
  93                            "'%s'", addr);
  94                 return -1;
  95         }
  96
  97         wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH " MACSTR, MAC2STR(bssid));
  98         rsn_preauth_deinit(wpa_s->wpa);
  99         if (rsn_preauth_init(wpa_s->wpa, bssid, ssid ? &ssid->eap : NULL))
 100                 return -1;
 101
 102         return 0;
 103 }
 104 #endif /* IEEE8021X_EAPOL */
 105
 106
 107 #ifdef CONFIG_PEERKEY
 108 /* MLME-STKSTART.request(peer) */
 109 static int wpa_supplicant_ctrl_iface_stkstart(
 110         struct wpa_supplicant *wpa_s, char *addr)
 111 {
 112         u8 peer[ETH_ALEN];
 113
 114         if (hwaddr_aton(addr, peer)) {
 115                 wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART: invalid "
 116                            "address '%s'", peer);
 117                 return -1;
 118         }
 119
 120         wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART " MACSTR,
 121                    MAC2STR(peer));
 122
 123         return wpa_sm_stkstart(wpa_s->wpa, peer);
 124 }
 125 #endif /* CONFIG_PEERKEY */
 126
 127
 128 #ifdef CONFIG_IEEE80211R
 129 static int wpa_supplicant_ctrl_iface_ft_ds(
 130         struct wpa_supplicant *wpa_s, char *addr)
 131 {
 132         u8 target_ap[ETH_ALEN];
 133
 134         if (hwaddr_aton(addr, target_ap)) {
 135                 wpa_printf(MSG_DEBUG, "CTRL_IFACE FT_DS: invalid "
 136                            "address '%s'", target_ap);
 137                 return -1;
 138         }
 139
 140         wpa_printf(MSG_DEBUG, "CTRL_IFACE FT_DS " MACSTR, MAC2STR(target_ap));
 141
 142         return wpa_ft_start_over_ds(wpa_s->wpa, target_ap);
 143 }
 144 #endif /* CONFIG_IEEE80211R */
 145
 146
 147 #ifdef CONFIG_WPS
 148 static int wpa_supplicant_ctrl_iface_wps_pbc(struct wpa_supplicant *wpa_s,
 149                                              char *cmd)
 150 {
 151         u8 bssid[ETH_ALEN];
 152
 153         if (cmd == NULL || os_strcmp(cmd, "any") == 0)
 154                 return wpas_wps_start_pbc(wpa_s, NULL);
 155
 156         if (hwaddr_aton(cmd, bssid)) {
 157                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_PBC: invalid BSSID '%s'",
 158                            cmd);
 159                 return -1;
 160         }
 161
 162         return wpas_wps_start_pbc(wpa_s, bssid);
 163 }
 164
 165
 166 static int wpa_supplicant_ctrl_iface_wps_pin(struct wpa_supplicant *wpa_s,
 167                                              char *cmd, char *buf,
 168                                              size_t buflen)
 169 {
 170         u8 bssid[ETH_ALEN], *_bssid = bssid;
 171         char *pin;
 172         int ret;
 173
 174         pin = os_strchr(cmd, ' ');
 175         if (pin)
 176                 *pin++ = '\0';
 177
 178         if (os_strcmp(cmd, "any") == 0)
 179                 _bssid = NULL;
 180         else if (hwaddr_aton(cmd, bssid)) {
 181                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_PIN: invalid BSSID '%s'",
 182                            cmd);
 183                 return -1;
 184         }
 185
 186         if (pin) {
 187                 ret = wpas_wps_start_pin(wpa_s, _bssid, pin);
 188                 if (ret < 0)
 189                         return -1;
 190                 ret = os_snprintf(buf, buflen, "%s", pin);
 191                 if (ret < 0 || (size_t) ret >= buflen)
 192                         return -1;
 193                 return ret;
 194         }
 195
 196         ret = wpas_wps_start_pin(wpa_s, _bssid, NULL);
 197         if (ret < 0)
 198                 return -1;
 199
 200         /* Return the generated PIN */
 201         ret = os_snprintf(buf, buflen, "%08d", ret);
 202         if (ret < 0 || (size_t) ret >= buflen)
 203                 return -1;
 204         return ret;
 205 }
 206
 207
 208 static int wpa_supplicant_ctrl_iface_wps_reg(struct wpa_supplicant *wpa_s,
 209                                              char *cmd)
 210 {
 211         u8 bssid[ETH_ALEN], *_bssid = bssid;
 212         char *pin;
 213
 214         pin = os_strchr(cmd, ' ');
 215         if (pin == NULL)
 216                 return -1;
 217         *pin++ = '\0';
 218
 219         if (os_strcmp(cmd, "any") == 0)
 220                 _bssid = NULL;
 221         else if (hwaddr_aton(cmd, bssid)) {
 222                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_REG: invalid BSSID '%s'",
 223                            cmd);
 224                 return -1;
 225         }
 226
 227         return wpas_wps_start_reg(wpa_s, _bssid, pin);
 228 }
 229 #endif /* CONFIG_WPS */
 230
 231
 232 static int wpa_supplicant_ctrl_iface_ctrl_rsp(struct wpa_supplicant *wpa_s,
 233                                               char *rsp)
 234 {
 235 #ifdef IEEE8021X_EAPOL
 236         char *pos, *id_pos;
 237         int id;
 238         struct wpa_ssid *ssid;
 239         struct eap_peer_config *eap;
 240
 241         pos = os_strchr(rsp, '-');
 242         if (pos == NULL)
 243                 return -1;
 244         *pos++ = '\0';
 245         id_pos = pos;
 246         pos = os_strchr(pos, ':');
 247         if (pos == NULL)
 248                 return -1;
 249         *pos++ = '\0';
 250         id = atoi(id_pos);
 251         wpa_printf(MSG_DEBUG, "CTRL_IFACE: field=%s id=%d", rsp, id);
 252         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
 253                               (u8 *) pos, os_strlen(pos));
 254
 255         ssid = wpa_config_get_network(wpa_s->conf, id);
 256         if (ssid == NULL) {
 257                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
 258                            "to update", id);
 259                 return -1;
 260         }
 261         eap = &ssid->eap;
 262
 263         if (os_strcmp(rsp, "IDENTITY") == 0) {
 264                 os_free(eap->identity);
 265                 eap->identity = (u8 *) os_strdup(pos);
 266                 eap->identity_len = os_strlen(pos);
 267                 eap->pending_req_identity = 0;
 268                 if (ssid == wpa_s->current_ssid)
 269                         wpa_s->reassociate = 1;
 270         } else if (os_strcmp(rsp, "PASSWORD") == 0) {
 271                 os_free(eap->password);
 272                 eap->password = (u8 *) os_strdup(pos);
 273                 eap->password_len = os_strlen(pos);
 274                 eap->pending_req_password = 0;
 275                 if (ssid == wpa_s->current_ssid)
 276                         wpa_s->reassociate = 1;
 277         } else if (os_strcmp(rsp, "NEW_PASSWORD") == 0) {
 278                 os_free(eap->new_password);
 279                 eap->new_password = (u8 *) os_strdup(pos);
 280                 eap->new_password_len = os_strlen(pos);
 281                 eap->pending_req_new_password = 0;
 282                 if (ssid == wpa_s->current_ssid)
 283                         wpa_s->reassociate = 1;
 284         } else if (os_strcmp(rsp, "PIN") == 0) {
 285                 os_free(eap->pin);
 286                 eap->pin = os_strdup(pos);
 287                 eap->pending_req_pin = 0;
 288                 if (ssid == wpa_s->current_ssid)
 289                         wpa_s->reassociate = 1;
 290         } else if (os_strcmp(rsp, "OTP") == 0) {
 291                 os_free(eap->otp);
 292                 eap->otp = (u8 *) os_strdup(pos);
 293                 eap->otp_len = os_strlen(pos);
 294                 os_free(eap->pending_req_otp);
 295                 eap->pending_req_otp = NULL;
 296                 eap->pending_req_otp_len = 0;
 297         } else if (os_strcmp(rsp, "PASSPHRASE") == 0) {
 298                 os_free(eap->private_key_passwd);
 299                 eap->private_key_passwd = (u8 *) os_strdup(pos);
 300                 eap->pending_req_passphrase = 0;
 301                 if (ssid == wpa_s->current_ssid)
 302                         wpa_s->reassociate = 1;
 303         } else {
 304                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", rsp);
 305                 return -1;
 306         }
 307
 308         return 0;
 309 #else /* IEEE8021X_EAPOL */
 310         wpa_printf(MSG_DEBUG, "CTRL_IFACE: 802.1X not included");
 311         return -1;
 312 #endif /* IEEE8021X_EAPOL */
 313 }
 314
 315
 316 static int wpa_supplicant_ctrl_iface_status(struct wpa_supplicant *wpa_s,
 317                                             const char *params,
 318                                             char *buf, size_t buflen)
 319 {
 320         char *pos, *end, tmp[30];
 321         int res, verbose, ret;
 322
 323         verbose = os_strcmp(params, "-VERBOSE") == 0;
 324         pos = buf;
 325         end = buf + buflen;
 326         if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 327                 struct wpa_ssid *ssid = wpa_s->current_ssid;
 328                 ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n",
 329                                   MAC2STR(wpa_s->bssid));
 330                 if (ret < 0 || ret >= end - pos)
 331                         return pos - buf;
 332                 pos += ret;
 333                 if (ssid) {
 334                         u8 *_ssid = ssid->ssid;
 335                         size_t ssid_len = ssid->ssid_len;
 336                         u8 ssid_buf[MAX_SSID_LEN];
 337                         if (ssid_len == 0) {
 338                                 int _res = wpa_drv_get_ssid(wpa_s, ssid_buf);
 339                                 if (_res < 0)
 340                                         ssid_len = 0;
 341                                 else
 342                                         ssid_len = _res;
 343                                 _ssid = ssid_buf;
 344                         }
 345                         ret = os_snprintf(pos, end - pos, "ssid=%s\nid=%d\n",
 346                                           wpa_ssid_txt(_ssid, ssid_len),
 347                                           ssid->id);
 348                         if (ret < 0 || ret >= end - pos)
 349                                 return pos - buf;
 350                         pos += ret;
 351
 352                         if (ssid->id_str) {
 353                                 ret = os_snprintf(pos, end - pos,
 354                                                   "id_str=%s\n",
 355                                                   ssid->id_str);
 356                                 if (ret < 0 || ret >= end - pos)
 357                                         return pos - buf;
 358                                 pos += ret;
 359                         }
 360                 }
 361
 362                 pos += wpa_sm_get_status(wpa_s->wpa, pos, end - pos, verbose);
 363         }
 364         ret = os_snprintf(pos, end - pos, "wpa_state=%s\n",
 365                           wpa_supplicant_state_txt(wpa_s->wpa_state));
 366         if (ret < 0 || ret >= end - pos)
 367                 return pos - buf;
 368         pos += ret;
 369
 370         if (wpa_s->l2 &&
 371             l2_packet_get_ip_addr(wpa_s->l2, tmp, sizeof(tmp)) >= 0) {
 372                 ret = os_snprintf(pos, end - pos, "ip_address=%s\n", tmp);
 373                 if (ret < 0 || ret >= end - pos)
 374                         return pos - buf;
 375                 pos += ret;
 376         }
 377
 378         if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
 379             wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 380                 res = eapol_sm_get_status(wpa_s->eapol, pos, end - pos,
 381                                           verbose);
 382                 if (res >= 0)
 383                         pos += res;
 384         }
 385
 386         res = rsn_preauth_get_status(wpa_s->wpa, pos, end - pos, verbose);
 387         if (res >= 0)
 388                 pos += res;
 389
 390         return pos - buf;
 391 }
 392
 393
 394 static int wpa_supplicant_ctrl_iface_bssid(struct wpa_supplicant *wpa_s,
 395                                            char *cmd)
 396 {
 397         char *pos;
 398         int id;
 399         struct wpa_ssid *ssid;
 400         u8 bssid[ETH_ALEN];
 401
 402         /* cmd: "<network id> <BSSID>" */
 403         pos = os_strchr(cmd, ' ');
 404         if (pos == NULL)
 405                 return -1;
 406         *pos++ = '\0';
 407         id = atoi(cmd);
 408         wpa_printf(MSG_DEBUG, "CTRL_IFACE: id=%d bssid='%s'", id, pos);
 409         if (hwaddr_aton(pos, bssid)) {
 410                 wpa_printf(MSG_DEBUG ,"CTRL_IFACE: invalid BSSID '%s'", pos);
 411                 return -1;
 412         }
 413
 414         ssid = wpa_config_get_network(wpa_s->conf, id);
 415         if (ssid == NULL) {
 416                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
 417                            "to update", id);
 418                 return -1;
 419         }
 420
 421         os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 422         ssid->bssid_set = !is_zero_ether_addr(bssid);
 423
 424         return 0;
 425 }
 426
 427
 428 static int wpa_supplicant_ctrl_iface_list_networks(
 429         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 430 {
 431         char *pos, *end;
 432         struct wpa_ssid *ssid;
 433         int ret;
 434
 435         pos = buf;
 436         end = buf + buflen;
 437         ret = os_snprintf(pos, end - pos,
 438                           "network id / ssid / bssid / flags\n");
 439         if (ret < 0 || ret >= end - pos)
 440                 return pos - buf;
 441         pos += ret;
 442
 443         ssid = wpa_s->conf->ssid;
 444         while (ssid) {
 445                 ret = os_snprintf(pos, end - pos, "%d\t%s",
 446                                   ssid->id,
 447                                   wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 448                 if (ret < 0 || ret >= end - pos)
 449                         return pos - buf;
 450                 pos += ret;
 451                 if (ssid->bssid_set) {
 452                         ret = os_snprintf(pos, end - pos, "\t" MACSTR,
 453                                           MAC2STR(ssid->bssid));
 454                 } else {
 455                         ret = os_snprintf(pos, end - pos, "\tany");
 456                 }
 457                 if (ret < 0 || ret >= end - pos)
 458                         return pos - buf;
 459                 pos += ret;
 460                 ret = os_snprintf(pos, end - pos, "\t%s%s",
 461                                   ssid == wpa_s->current_ssid ?
 462                                   "[CURRENT]" : "",
 463                                   ssid->disabled ? "[DISABLED]" : "");
 464                 if (ret < 0 || ret >= end - pos)
 465                         return pos - buf;
 466                 pos += ret;
 467                 ret = os_snprintf(pos, end - pos, "\n");
 468                 if (ret < 0 || ret >= end - pos)
 469                         return pos - buf;
 470                 pos += ret;
 471
 472                 ssid = ssid->next;
 473         }
 474
 475         return pos - buf;
 476 }
 477
 478
 479 static char * wpa_supplicant_cipher_txt(char *pos, char *end, int cipher)
 480 {
 481         int first = 1, ret;
 482         ret = os_snprintf(pos, end - pos, "-");
 483         if (ret < 0 || ret >= end - pos)
 484                 return pos;
 485         pos += ret;
 486         if (cipher & WPA_CIPHER_NONE) {
 487                 ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : "+");
 488                 if (ret < 0 || ret >= end - pos)
 489                         return pos;
 490                 pos += ret;
 491                 first = 0;
 492         }
 493         if (cipher & WPA_CIPHER_WEP40) {
 494                 ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : "+");
 495                 if (ret < 0 || ret >= end - pos)
 496                         return pos;
 497                 pos += ret;
 498                 first = 0;
 499         }
 500         if (cipher & WPA_CIPHER_WEP104) {
 501                 ret = os_snprintf(pos, end - pos, "%sWEP104",
 502                                   first ? "" : "+");
 503                 if (ret < 0 || ret >= end - pos)
 504                         return pos;
 505                 pos += ret;
 506                 first = 0;
 507         }
 508         if (cipher & WPA_CIPHER_TKIP) {
 509                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : "+");
 510                 if (ret < 0 || ret >= end - pos)
 511                         return pos;
 512                 pos += ret;
 513                 first = 0;
 514         }
 515         if (cipher & WPA_CIPHER_CCMP) {
 516                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : "+");
 517                 if (ret < 0 || ret >= end - pos)
 518                         return pos;
 519                 pos += ret;
 520                 first = 0;
 521         }
 522         return pos;
 523 }
 524
 525
 526 static char * wpa_supplicant_ie_txt(char *pos, char *end, const char *proto,
 527                                     const u8 *ie, size_t ie_len)
 528 {
 529         struct wpa_ie_data data;
 530         int first, ret;
 531
 532         ret = os_snprintf(pos, end - pos, "[%s-", proto);
 533         if (ret < 0 || ret >= end - pos)
 534                 return pos;
 535         pos += ret;
 536
 537         if (wpa_parse_wpa_ie(ie, ie_len, &data) < 0) {
 538                 ret = os_snprintf(pos, end - pos, "?]");
 539                 if (ret < 0 || ret >= end - pos)
 540                         return pos;
 541                 pos += ret;
 542                 return pos;
 543         }
 544
 545         first = 1;
 546         if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 547                 ret = os_snprintf(pos, end - pos, "%sEAP", first ? "" : "+");
 548                 if (ret < 0 || ret >= end - pos)
 549                         return pos;
 550                 pos += ret;
 551                 first = 0;
 552         }
 553         if (data.key_mgmt & WPA_KEY_MGMT_PSK) {
 554                 ret = os_snprintf(pos, end - pos, "%sPSK", first ? "" : "+");
 555                 if (ret < 0 || ret >= end - pos)
 556                         return pos;
 557                 pos += ret;
 558                 first = 0;
 559         }
 560         if (data.key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 561                 ret = os_snprintf(pos, end - pos, "%sNone", first ? "" : "+");
 562                 if (ret < 0 || ret >= end - pos)
 563                         return pos;
 564                 pos += ret;
 565                 first = 0;
 566         }
 567 #ifdef CONFIG_IEEE80211R
 568         if (data.key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 569                 ret = os_snprintf(pos, end - pos, "%sFT/EAP",
 570                                   first ? "" : "+");
 571                 if (ret < 0 || ret >= end - pos)
 572                         return pos;
 573                 pos += ret;
 574                 first = 0;
 575         }
 576         if (data.key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 577                 ret = os_snprintf(pos, end - pos, "%sFT/PSK",
 578                                   first ? "" : "+");
 579                 if (ret < 0 || ret >= end - pos)
 580                         return pos;
 581                 pos += ret;
 582                 first = 0;
 583         }
 584 #endif /* CONFIG_IEEE80211R */
 585 #ifdef CONFIG_IEEE80211W
 586         if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 587                 ret = os_snprintf(pos, end - pos, "%sEAP-SHA256",
 588                                   first ? "" : "+");
 589                 if (ret < 0 || ret >= end - pos)
 590                         return pos;
 591                 pos += ret;
 592                 first = 0;
 593         }
 594         if (data.key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 595                 ret = os_snprintf(pos, end - pos, "%sPSK-SHA256",
 596                                   first ? "" : "+");
 597                 if (ret < 0 || ret >= end - pos)
 598                         return pos;
 599                 pos += ret;
 600                 first = 0;
 601         }
 602 #endif /* CONFIG_IEEE80211W */
 603
 604         pos = wpa_supplicant_cipher_txt(pos, end, data.pairwise_cipher);
 605
 606         if (data.capabilities & WPA_CAPABILITY_PREAUTH) {
 607                 ret = os_snprintf(pos, end - pos, "-preauth");
 608                 if (ret < 0 || ret >= end - pos)
 609                         return pos;
 610                 pos += ret;
 611         }
 612
 613         ret = os_snprintf(pos, end - pos, "]");
 614         if (ret < 0 || ret >= end - pos)
 615                 return pos;
 616         pos += ret;
 617
 618         return pos;
 619 }
 620
 621 static char * wpa_supplicant_wps_ie_txt(char *pos, char *end,
 622                                         const struct wpa_scan_res *res)
 623 {
 624 #ifdef CONFIG_WPS
 625         struct wpabuf *wps_ie;
 626         int ret;
 627         const char *txt;
 628
 629         wps_ie = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
 630         if (wps_ie == NULL)
 631                 return pos;
 632
 633         if (wps_is_selected_pbc_registrar(wps_ie))
 634                 txt = "[WPS-PBC]";
 635         else if (wps_is_selected_pin_registrar(wps_ie))
 636                 txt = "[WPS-PIN]";
 637         else
 638                 txt = "[WPS]";
 639
 640         ret = os_snprintf(pos, end - pos, "%s", txt);
 641         if (ret >= 0 && ret < end - pos)
 642                 pos += ret;
 643         wpabuf_free(wps_ie);
 644 #endif /* CONFIG_WPS */
 645
 646         return pos;
 647 }
 648
 649
 650 /* Format one result on one text line into a buffer. */
 651 static int wpa_supplicant_ctrl_iface_scan_result(
 652         const struct wpa_scan_res *res, char *buf, size_t buflen)
 653 {
 654         char *pos, *end;
 655         int ret;
 656         const u8 *ie, *ie2;
 657
 658         pos = buf;
 659         end = buf + buflen;
 660
 661         ret = os_snprintf(pos, end - pos, MACSTR "\t%d\t%d\t",
 662                           MAC2STR(res->bssid), res->freq, res->level);
 663         if (ret < 0 || ret >= end - pos)
 664                 return pos - buf;
 665         pos += ret;
 666         ie = wpa_scan_get_vendor_ie(res, WPA_IE_VENDOR_TYPE);
 667         if (ie)
 668                 pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
 669         ie2 = wpa_scan_get_ie(res, WLAN_EID_RSN);
 670         if (ie2)
 671                 pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
 672         pos = wpa_supplicant_wps_ie_txt(pos, end, res);
 673         if (!ie && !ie2 && res->caps & IEEE80211_CAP_PRIVACY) {
 674                 ret = os_snprintf(pos, end - pos, "[WEP]");
 675                 if (ret < 0 || ret >= end - pos)
 676                         return pos - buf;
 677                 pos += ret;
 678         }
 679         if (res->caps & IEEE80211_CAP_IBSS) {
 680                 ret = os_snprintf(pos, end - pos, "[IBSS]");
 681                 if (ret < 0 || ret >= end - pos)
 682                         return pos - buf;
 683                 pos += ret;
 684         }
 685
 686         ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 687         ret = os_snprintf(pos, end - pos, "\t%s",
 688                           ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
 689         if (ret < 0 || ret >= end - pos)
 690                 return pos - buf;
 691         pos += ret;
 692
 693         ret = os_snprintf(pos, end - pos, "\n");
 694         if (ret < 0 || ret >= end - pos)
 695                 return pos - buf;
 696         pos += ret;
 697
 698         return pos - buf;
 699 }
 700
 701
 702 static int wpa_supplicant_ctrl_iface_scan_results(
 703         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 704 {
 705         char *pos, *end;
 706         struct wpa_scan_res *res;
 707         int ret;
 708         size_t i;
 709
 710         if (wpa_s->scan_res == NULL &&
 711             wpa_supplicant_get_scan_results(wpa_s) < 0)
 712                 return 0;
 713
 714         pos = buf;
 715         end = buf + buflen;
 716         ret = os_snprintf(pos, end - pos, "bssid / frequency / signal level / "
 717                           "flags / ssid\n");
 718         if (ret < 0 || ret >= end - pos)
 719                 return pos - buf;
 720         pos += ret;
 721
 722         for (i = 0; i < wpa_s->scan_res->num; i++) {
 723                 res = wpa_s->scan_res->res[i];
 724                 ret = wpa_supplicant_ctrl_iface_scan_result(res, pos,
 725                                                             end - pos);
 726                 if (ret < 0 || ret >= end - pos)
 727                         return pos - buf;
 728                 pos += ret;
 729         }
 730
 731         return pos - buf;
 732 }
 733
 734
 735 static int wpa_supplicant_ctrl_iface_select_network(
 736         struct wpa_supplicant *wpa_s, char *cmd)
 737 {
 738         int id;
 739         struct wpa_ssid *ssid;
 740
 741         /* cmd: "<network id>" or "any" */
 742         if (os_strcmp(cmd, "any") == 0) {
 743                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SELECT_NETWORK any");
 744                 ssid = wpa_s->conf->ssid;
 745                 while (ssid) {
 746                         ssid->disabled = 0;
 747                         ssid = ssid->next;
 748                 }
 749                 wpa_s->reassociate = 1;
 750                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 751                 return 0;
 752         }
 753
 754         id = atoi(cmd);
 755         wpa_printf(MSG_DEBUG, "CTRL_IFACE: SELECT_NETWORK id=%d", id);
 756
 757         ssid = wpa_config_get_network(wpa_s->conf, id);
 758         if (ssid == NULL) {
 759                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 760                            "id=%d", id);
 761                 return -1;
 762         }
 763
 764         if (ssid != wpa_s->current_ssid && wpa_s->current_ssid)
 765                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 766
 767         /* Mark all other networks disabled and trigger reassociation */
 768         ssid = wpa_s->conf->ssid;
 769         while (ssid) {
 770                 ssid->disabled = id != ssid->id;
 771                 ssid = ssid->next;
 772         }
 773         wpa_s->reassociate = 1;
 774         wpa_supplicant_req_scan(wpa_s, 0, 0);
 775
 776         return 0;
 777 }
 778
 779
 780 static int wpa_supplicant_ctrl_iface_enable_network(
 781         struct wpa_supplicant *wpa_s, char *cmd)
 782 {
 783         int id;
 784         struct wpa_ssid *ssid;
 785
 786         /* cmd: "<network id>" or "all" */
 787         if (os_strcmp(cmd, "all") == 0) {
 788                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: ENABLE_NETWORK all");
 789                 ssid = wpa_s->conf->ssid;
 790                 while (ssid) {
 791                         if (ssid == wpa_s->current_ssid && ssid->disabled)
 792                                 wpa_s->reassociate = 1;
 793                         ssid->disabled = 0;
 794                         ssid = ssid->next;
 795                 }
 796                 if (wpa_s->reassociate)
 797                         wpa_supplicant_req_scan(wpa_s, 0, 0);
 798                 return 0;
 799         }
 800
 801         id = atoi(cmd);
 802         wpa_printf(MSG_DEBUG, "CTRL_IFACE: ENABLE_NETWORK id=%d", id);
 803
 804         ssid = wpa_config_get_network(wpa_s->conf, id);
 805         if (ssid == NULL) {
 806                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 807                            "id=%d", id);
 808                 return -1;
 809         }
 810
 811         if (wpa_s->current_ssid == NULL && ssid->disabled) {
 812                 /*
 813                  * Try to reassociate since there is no current configuration
 814                  * and a new network was made available. */
 815                 wpa_s->reassociate = 1;
 816                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 817         }
 818         ssid->disabled = 0;
 819
 820         return 0;
 821 }
 822
 823
 824 static int wpa_supplicant_ctrl_iface_disable_network(
 825         struct wpa_supplicant *wpa_s, char *cmd)
 826 {
 827         int id;
 828         struct wpa_ssid *ssid;
 829
 830         /* cmd: "<network id>" or "all" */
 831         if (os_strcmp(cmd, "all") == 0) {
 832                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: DISABLE_NETWORK all");
 833                 ssid = wpa_s->conf->ssid;
 834                 while (ssid) {
 835                         ssid->disabled = 1;
 836                         ssid = ssid->next;
 837                 }
 838                 if (wpa_s->current_ssid)
 839                         wpa_supplicant_disassociate(wpa_s,
 840                                                     WLAN_REASON_DEAUTH_LEAVING);
 841                 return 0;
 842         }
 843
 844         id = atoi(cmd);
 845         wpa_printf(MSG_DEBUG, "CTRL_IFACE: DISABLE_NETWORK id=%d", id);
 846
 847         ssid = wpa_config_get_network(wpa_s->conf, id);
 848         if (ssid == NULL) {
 849                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 850                            "id=%d", id);
 851                 return -1;
 852         }
 853
 854         if (ssid == wpa_s->current_ssid)
 855                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 856         ssid->disabled = 1;
 857
 858         return 0;
 859 }
 860
 861
 862 static int wpa_supplicant_ctrl_iface_add_network(
 863         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 864 {
 865         struct wpa_ssid *ssid;
 866         int ret;
 867
 868         wpa_printf(MSG_DEBUG, "CTRL_IFACE: ADD_NETWORK");
 869
 870         ssid = wpa_config_add_network(wpa_s->conf);
 871         if (ssid == NULL)
 872                 return -1;
 873         ssid->disabled = 1;
 874         wpa_config_set_network_defaults(ssid);
 875
 876         ret = os_snprintf(buf, buflen, "%d\n", ssid->id);
 877         if (ret < 0 || (size_t) ret >= buflen)
 878                 return -1;
 879         return ret;
 880 }
 881
 882
 883 static int wpa_supplicant_ctrl_iface_remove_network(
 884         struct wpa_supplicant *wpa_s, char *cmd)
 885 {
 886         int id;
 887         struct wpa_ssid *ssid;
 888
 889         /* cmd: "<network id>" or "all" */
 890         if (os_strcmp(cmd, "all") == 0) {
 891                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: REMOVE_NETWORK all");
 892                 ssid = wpa_s->conf->ssid;
 893                 while (ssid) {
 894                         id = ssid->id;
 895                         ssid = ssid->next;
 896                         wpa_config_remove_network(wpa_s->conf, id);
 897                 }
 898                 if (wpa_s->current_ssid) {
 899                         eapol_sm_invalidate_cached_session(wpa_s->eapol);
 900                         wpa_supplicant_disassociate(wpa_s,
 901                                                     WLAN_REASON_DEAUTH_LEAVING);
 902                 }
 903                 return 0;
 904         }
 905
 906         id = atoi(cmd);
 907         wpa_printf(MSG_DEBUG, "CTRL_IFACE: REMOVE_NETWORK id=%d", id);
 908
 909         ssid = wpa_config_get_network(wpa_s->conf, id);
 910         if (ssid == NULL ||
 911             wpa_config_remove_network(wpa_s->conf, id) < 0) {
 912                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 913                            "id=%d", id);
 914                 return -1;
 915         }
 916
 917         if (ssid == wpa_s->current_ssid) {
 918                 /*
 919                  * Invalidate the EAP session cache if the current network is
 920                  * removed.
 921                  */
 922                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 923
 924                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 925         }
 926
 927         return 0;
 928 }
 929
 930
 931 static int wpa_supplicant_ctrl_iface_set_network(
 932         struct wpa_supplicant *wpa_s, char *cmd)
 933 {
 934         int id;
 935         struct wpa_ssid *ssid;
 936         char *name, *value;
 937
 938         /* cmd: "<network id> <variable name> <value>" */
 939         name = os_strchr(cmd, ' ');
 940         if (name == NULL)
 941                 return -1;
 942         *name++ = '\0';
 943
 944         value = os_strchr(name, ' ');
 945         if (value == NULL)
 946                 return -1;
 947         *value++ = '\0';
 948
 949         id = atoi(cmd);
 950         wpa_printf(MSG_DEBUG, "CTRL_IFACE: SET_NETWORK id=%d name='%s'",
 951                    id, name);
 952         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
 953                               (u8 *) value, os_strlen(value));
 954
 955         ssid = wpa_config_get_network(wpa_s->conf, id);
 956         if (ssid == NULL) {
 957                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 958                            "id=%d", id);
 959                 return -1;
 960         }
 961
 962         if (wpa_config_set(ssid, name, value, 0) < 0) {
 963                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Failed to set network "
 964                            "variable '%s'", name);
 965                 return -1;
 966         }
 967
 968         if (wpa_s->current_ssid == ssid) {
 969                 /*
 970                  * Invalidate the EAP session cache if anything in the current
 971                  * configuration changes.
 972                  */
 973                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 974         }
 975
 976         if ((os_strcmp(name, "psk") == 0 &&
 977              value[0] == '"' && ssid->ssid_len) ||
 978             (os_strcmp(name, "ssid") == 0 && ssid->passphrase))
 979                 wpa_config_update_psk(ssid);
 980
 981         return 0;
 982 }
 983
 984
 985 static int wpa_supplicant_ctrl_iface_get_network(
 986         struct wpa_supplicant *wpa_s, char *cmd, char *buf, size_t buflen)
 987 {
 988         int id;
 989         size_t res;
 990         struct wpa_ssid *ssid;
 991         char *name, *value;
 992
 993         /* cmd: "<network id> <variable name>" */
 994         name = os_strchr(cmd, ' ');
 995         if (name == NULL || buflen == 0)
 996                 return -1;
 997         *name++ = '\0';
 998
 999         id = atoi(cmd);
1000         wpa_printf(MSG_DEBUG, "CTRL_IFACE: GET_NETWORK id=%d name='%s'",
1001                    id, name);
1002
1003         ssid = wpa_config_get_network(wpa_s->conf, id);
1004         if (ssid == NULL) {
1005                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
1006                            "id=%d", id);
1007                 return -1;
1008         }
1009
1010         value = wpa_config_get_no_key(ssid, name);
1011         if (value == NULL) {
1012                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Failed to get network "
1013                            "variable '%s'", name);
1014                 return -1;
1015         }
1016
1017         res = os_strlcpy(buf, value, buflen);
1018         if (res >= buflen) {
1019                 os_free(value);
1020                 return -1;
1021         }
1022
1023         os_free(value);
1024
1025         return res;
1026 }
1027
1028
1029 #ifndef CONFIG_NO_CONFIG_WRITE
1030 static int wpa_supplicant_ctrl_iface_save_config(struct wpa_supplicant *wpa_s)
1031 {
1032         int ret;
1033
1034         if (!wpa_s->conf->update_config) {
1035                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Not allowed "
1036                            "to update configuration (update_config=0)");
1037                 return -1;
1038         }
1039
1040         ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
1041         if (ret) {
1042                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Failed to "
1043                            "update configuration");
1044         } else {
1045                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Configuration"
1046                            " updated");
1047         }
1048
1049         return ret;
1050 }
1051 #endif /* CONFIG_NO_CONFIG_WRITE */
1052
1053
1054 static int ctrl_iface_get_capability_pairwise(int res, char *strict,
1055                                               struct wpa_driver_capa *capa,
1056                                               char *buf, size_t buflen)
1057 {
1058         int ret, first = 1;
1059         char *pos, *end;
1060         size_t len;
1061
1062         pos = buf;
1063         end = pos + buflen;
1064
1065         if (res < 0) {
1066                 if (strict)
1067                         return 0;
1068                 len = os_strlcpy(buf, "CCMP TKIP NONE", buflen);
1069                 if (len >= buflen)
1070                         return -1;
1071                 return len;
1072         }
1073
1074         if (capa->enc & WPA_DRIVER_CAPA_ENC_CCMP) {
1075                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : " ");
1076                 if (ret < 0 || ret >= end - pos)
1077                         return pos - buf;
1078                 pos += ret;
1079                 first = 0;
1080         }
1081
1082         if (capa->enc & WPA_DRIVER_CAPA_ENC_TKIP) {
1083                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : " ");
1084                 if (ret < 0 || ret >= end - pos)
1085                         return pos - buf;
1086                 pos += ret;
1087                 first = 0;
1088         }
1089
1090         if (capa->key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
1091                 ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : " ");
1092                 if (ret < 0 || ret >= end - pos)
1093                         return pos - buf;
1094                 pos += ret;
1095                 first = 0;
1096         }
1097
1098         return pos - buf;
1099 }
1100
1101
1102 static int ctrl_iface_get_capability_group(int res, char *strict,
1103                                            struct wpa_driver_capa *capa,
1104                                            char *buf, size_t buflen)
1105 {
1106         int ret, first = 1;
1107         char *pos, *end;
1108         size_t len;
1109
1110         pos = buf;
1111         end = pos + buflen;
1112
1113         if (res < 0) {
1114                 if (strict)
1115                         return 0;
1116                 len = os_strlcpy(buf, "CCMP TKIP WEP104 WEP40", buflen);
1117                 if (len >= buflen)
1118                         return -1;
1119                 return len;
1120         }
1121
1122         if (capa->enc & WPA_DRIVER_CAPA_ENC_CCMP) {
1123                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : " ");
1124                 if (ret < 0 || ret >= end - pos)
1125                         return pos - buf;
1126                 pos += ret;
1127                 first = 0;
1128         }
1129
1130         if (capa->enc & WPA_DRIVER_CAPA_ENC_TKIP) {
1131                 ret = os_snprintf(pos, end - pos, "%sTKIP", 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_WEP104) {
1139                 ret = os_snprintf(pos, end - pos, "%sWEP104",
1140                                   first ? "" : " ");
1141                 if (ret < 0 || ret >= end - pos)
1142                         return pos - buf;
1143                 pos += ret;
1144                 first = 0;
1145         }
1146
1147         if (capa->enc & WPA_DRIVER_CAPA_ENC_WEP40) {
1148                 ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : " ");
1149                 if (ret < 0 || ret >= end - pos)
1150                         return pos - buf;
1151                 pos += ret;
1152                 first = 0;
1153         }
1154
1155         return pos - buf;
1156 }
1157
1158
1159 static int ctrl_iface_get_capability_key_mgmt(int res, char *strict,
1160                                               struct wpa_driver_capa *capa,
1161                                               char *buf, size_t buflen)
1162 {
1163         int ret;
1164         char *pos, *end;
1165         size_t len;
1166
1167         pos = buf;
1168         end = pos + buflen;
1169
1170         if (res < 0) {
1171                 if (strict)
1172                         return 0;
1173                 len = os_strlcpy(buf, "WPA-PSK WPA-EAP IEEE8021X WPA-NONE "
1174                                  "NONE", buflen);
1175                 if (len >= buflen)
1176                         return -1;
1177                 return len;
1178         }
1179
1180         ret = os_snprintf(pos, end - pos, "NONE IEEE8021X");
1181         if (ret < 0 || ret >= end - pos)
1182                 return pos - buf;
1183         pos += ret;
1184
1185         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1186                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2)) {
1187                 ret = os_snprintf(pos, end - pos, " WPA-EAP");
1188                 if (ret < 0 || ret >= end - pos)
1189                         return pos - buf;
1190                 pos += ret;
1191         }
1192
1193         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1194                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
1195                 ret = os_snprintf(pos, end - pos, " WPA-PSK");
1196                 if (ret < 0 || ret >= end - pos)
1197                         return pos - buf;
1198                 pos += ret;
1199         }
1200
1201         if (capa->key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
1202                 ret = os_snprintf(pos, end - pos, " WPA-NONE");
1203                 if (ret < 0 || ret >= end - pos)
1204                         return pos - buf;
1205                 pos += ret;
1206         }
1207
1208         return pos - buf;
1209 }
1210
1211
1212 static int ctrl_iface_get_capability_proto(int res, char *strict,
1213                                            struct wpa_driver_capa *capa,
1214                                            char *buf, size_t buflen)
1215 {
1216         int ret, first = 1;
1217         char *pos, *end;
1218         size_t len;
1219
1220         pos = buf;
1221         end = pos + buflen;
1222
1223         if (res < 0) {
1224                 if (strict)
1225                         return 0;
1226                 len = os_strlcpy(buf, "RSN WPA", buflen);
1227                 if (len >= buflen)
1228                         return -1;
1229                 return len;
1230         }
1231
1232         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1233                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
1234                 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
1235                 if (ret < 0 || ret >= end - pos)
1236                         return pos - buf;
1237                 pos += ret;
1238                 first = 0;
1239         }
1240
1241         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1242                               WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK)) {
1243                 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
1244                 if (ret < 0 || ret >= end - pos)
1245                         return pos - buf;
1246                 pos += ret;
1247                 first = 0;
1248         }
1249
1250         return pos - buf;
1251 }
1252
1253
1254 static int ctrl_iface_get_capability_auth_alg(int res, char *strict,
1255                                               struct wpa_driver_capa *capa,
1256                                               char *buf, size_t buflen)
1257 {
1258         int ret, first = 1;
1259         char *pos, *end;
1260         size_t len;
1261
1262         pos = buf;
1263         end = pos + buflen;
1264
1265         if (res < 0) {
1266                 if (strict)
1267                         return 0;
1268                 len = os_strlcpy(buf, "OPEN SHARED LEAP", buflen);
1269                 if (len >= buflen)
1270                         return -1;
1271                 return len;
1272         }
1273
1274         if (capa->auth & (WPA_DRIVER_AUTH_OPEN)) {
1275                 ret = os_snprintf(pos, end - pos, "%sOPEN", first ? "" : " ");
1276                 if (ret < 0 || ret >= end - pos)
1277                         return pos - buf;
1278                 pos += ret;
1279                 first = 0;
1280         }
1281
1282         if (capa->auth & (WPA_DRIVER_AUTH_SHARED)) {
1283                 ret = os_snprintf(pos, end - pos, "%sSHARED",
1284                                   first ? "" : " ");
1285                 if (ret < 0 || ret >= end - pos)
1286                         return pos - buf;
1287                 pos += ret;
1288                 first = 0;
1289         }
1290
1291         if (capa->auth & (WPA_DRIVER_AUTH_LEAP)) {
1292                 ret = os_snprintf(pos, end - pos, "%sLEAP", first ? "" : " ");
1293                 if (ret < 0 || ret >= end - pos)
1294                         return pos - buf;
1295                 pos += ret;
1296                 first = 0;
1297         }
1298
1299         return pos - buf;
1300 }
1301
1302
1303 static int wpa_supplicant_ctrl_iface_get_capability(
1304         struct wpa_supplicant *wpa_s, const char *_field, char *buf,
1305         size_t buflen)
1306 {
1307         struct wpa_driver_capa capa;
1308         int res;
1309         char *strict;
1310         char field[30];
1311         size_t len;
1312
1313         /* Determine whether or not strict checking was requested */
1314         len = os_strlcpy(field, _field, sizeof(field));
1315         if (len >= sizeof(field))
1316                 return -1;
1317         strict = os_strchr(field, ' ');
1318         if (strict != NULL) {
1319                 *strict++ = '\0';
1320                 if (os_strcmp(strict, "strict") != 0)
1321                         return -1;
1322         }
1323
1324         wpa_printf(MSG_DEBUG, "CTRL_IFACE: GET_CAPABILITY '%s' %s",
1325                 field, strict ? strict : "");
1326
1327         if (os_strcmp(field, "eap") == 0) {
1328                 return eap_get_names(buf, buflen);
1329         }
1330
1331         res = wpa_drv_get_capa(wpa_s, &capa);
1332
1333         if (os_strcmp(field, "pairwise") == 0)
1334                 return ctrl_iface_get_capability_pairwise(res, strict, &capa,
1335                                                           buf, buflen);
1336
1337         if (os_strcmp(field, "group") == 0)
1338                 return ctrl_iface_get_capability_group(res, strict, &capa,
1339                                                        buf, buflen);
1340
1341         if (os_strcmp(field, "key_mgmt") == 0)
1342                 return ctrl_iface_get_capability_key_mgmt(res, strict, &capa,
1343                                                           buf, buflen);
1344
1345         if (os_strcmp(field, "proto") == 0)
1346                 return ctrl_iface_get_capability_proto(res, strict, &capa,
1347                                                        buf, buflen);
1348
1349         if (os_strcmp(field, "auth_alg") == 0)
1350                 return ctrl_iface_get_capability_auth_alg(res, strict, &capa,
1351                                                           buf, buflen);
1352
1353         wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown GET_CAPABILITY field '%s'",
1354                    field);
1355
1356         return -1;
1357 }
1358
1359
1360 static int wpa_supplicant_ctrl_iface_bss(struct wpa_supplicant *wpa_s,
1361                                          const char *cmd, char *buf,
1362                                          size_t buflen)
1363 {
1364         u8 bssid[ETH_ALEN];
1365         size_t i;
1366         struct wpa_scan_results *results;
1367         struct wpa_scan_res *bss;
1368         int ret;
1369         char *pos, *end;
1370         const u8 *ie, *ie2;
1371
1372         if (wpa_s->scan_res == NULL &&
1373             wpa_supplicant_get_scan_results(wpa_s) < 0)
1374                 return 0;
1375
1376         results = wpa_s->scan_res;
1377         if (results == NULL)
1378                 return 0;
1379
1380         if (hwaddr_aton(cmd, bssid) == 0) {
1381                 for (i = 0; i < results->num; i++) {
1382                         if (os_memcmp(bssid, results->res[i]->bssid, ETH_ALEN)
1383                             == 0)
1384                                 break;
1385                 }
1386         } else
1387                 i = atoi(cmd);
1388
1389         if (i >= results->num || results->res[i] == NULL)
1390                 return 0; /* no match found */
1391
1392         bss = results->res[i];
1393         pos = buf;
1394         end = buf + buflen;
1395         ret = os_snprintf(pos, end - pos,
1396                           "bssid=" MACSTR "\n"
1397                           "freq=%d\n"
1398                           "beacon_int=%d\n"
1399                           "capabilities=0x%04x\n"
1400                           "qual=%d\n"
1401                           "noise=%d\n"
1402                           "level=%d\n"
1403                           "tsf=%016llu\n"
1404                           "ie=",
1405                           MAC2STR(bss->bssid), bss->freq, bss->beacon_int,
1406                           bss->caps, bss->qual, bss->noise, bss->level,
1407                           (unsigned long long) bss->tsf);
1408         if (ret < 0 || ret >= end - pos)
1409                 return pos - buf;
1410         pos += ret;
1411
1412         ie = (const u8 *) (bss + 1);
1413         for (i = 0; i < bss->ie_len; i++) {
1414                 ret = os_snprintf(pos, end - pos, "%02x", *ie++);
1415                 if (ret < 0 || ret >= end - pos)
1416                         return pos - buf;
1417                 pos += ret;
1418         }
1419
1420         ret = os_snprintf(pos, end - pos, "\n");
1421         if (ret < 0 || ret >= end - pos)
1422                 return pos - buf;
1423         pos += ret;
1424
1425         ret = os_snprintf(pos, end - pos, "flags=");
1426         if (ret < 0 || ret >= end - pos)
1427                 return pos - buf;
1428         pos += ret;
1429
1430         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
1431         if (ie)
1432                 pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
1433         ie2 = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1434         if (ie2)
1435                 pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
1436         pos = wpa_supplicant_wps_ie_txt(pos, end, bss);
1437         if (!ie && !ie2 && bss->caps & IEEE80211_CAP_PRIVACY) {
1438                 ret = os_snprintf(pos, end - pos, "[WEP]");
1439                 if (ret < 0 || ret >= end - pos)
1440                         return pos - buf;
1441                 pos += ret;
1442         }
1443         if (bss->caps & IEEE80211_CAP_IBSS) {
1444                 ret = os_snprintf(pos, end - pos, "[IBSS]");
1445                 if (ret < 0 || ret >= end - pos)
1446                         return pos - buf;
1447                 pos += ret;
1448         }
1449
1450         ret = os_snprintf(pos, end - pos, "\n");
1451         if (ret < 0 || ret >= end - pos)
1452                 return pos - buf;
1453         pos += ret;
1454
1455         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1456         ret = os_snprintf(pos, end - pos, "ssid=%s\n",
1457                           ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
1458         if (ret < 0 || ret >= end - pos)
1459                 return pos - buf;
1460         pos += ret;
1461
1462         return pos - buf;
1463 }
1464
1465
1466 static int wpa_supplicant_ctrl_iface_ap_scan(
1467         struct wpa_supplicant *wpa_s, char *cmd)
1468 {
1469         int ap_scan = atoi(cmd);
1470
1471         if (ap_scan < 0 || ap_scan > 2)
1472                 return -1;
1473         wpa_s->conf->ap_scan = ap_scan;
1474         return 0;
1475 }
1476
1477
1478 char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
1479                                          char *buf, size_t *resp_len)
1480 {
1481         char *reply;
1482         const int reply_size = 2048;
1483         int ctrl_rsp = 0;
1484         int reply_len;
1485
1486         if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0 ||
1487             os_strncmp(buf, "SET_NETWORK ", 12) == 0) {
1488                 wpa_hexdump_ascii_key(MSG_DEBUG, "RX ctrl_iface",
1489                                       (const u8 *) buf, os_strlen(buf));
1490         } else {
1491                 wpa_hexdump_ascii(MSG_DEBUG, "RX ctrl_iface",
1492                                   (const u8 *) buf, os_strlen(buf));
1493         }
1494
1495         reply = os_malloc(reply_size);
1496         if (reply == NULL) {
1497                 *resp_len = 1;
1498                 return NULL;
1499         }
1500
1501         os_memcpy(reply, "OK\n", 3);
1502         reply_len = 3;
1503
1504         if (os_strcmp(buf, "PING") == 0) {
1505                 os_memcpy(reply, "PONG\n", 5);
1506                 reply_len = 5;
1507         } else if (os_strcmp(buf, "MIB") == 0) {
1508                 reply_len = wpa_sm_get_mib(wpa_s->wpa, reply, reply_size);
1509                 if (reply_len >= 0) {
1510                         int res;
1511                         res = eapol_sm_get_mib(wpa_s->eapol, reply + reply_len,
1512                                                reply_size - reply_len);
1513                         if (res < 0)
1514                                 reply_len = -1;
1515                         else
1516                                 reply_len += res;
1517                 }
1518         } else if (os_strncmp(buf, "STATUS", 6) == 0) {
1519                 reply_len = wpa_supplicant_ctrl_iface_status(
1520                         wpa_s, buf + 6, reply, reply_size);
1521         } else if (os_strcmp(buf, "PMKSA") == 0) {
1522                 reply_len = pmksa_cache_list(wpa_s->wpa, reply, reply_size);
1523         } else if (os_strncmp(buf, "SET ", 4) == 0) {
1524                 if (wpa_supplicant_ctrl_iface_set(wpa_s, buf + 4))
1525                         reply_len = -1;
1526         } else if (os_strcmp(buf, "LOGON") == 0) {
1527                 eapol_sm_notify_logoff(wpa_s->eapol, FALSE);
1528         } else if (os_strcmp(buf, "LOGOFF") == 0) {
1529                 eapol_sm_notify_logoff(wpa_s->eapol, TRUE);
1530         } else if (os_strcmp(buf, "REASSOCIATE") == 0) {
1531                 wpa_s->disconnected = 0;
1532                 wpa_s->reassociate = 1;
1533                 wpa_supplicant_req_scan(wpa_s, 0, 0);
1534         } else if (os_strcmp(buf, "RECONNECT") == 0) {
1535                 if (wpa_s->disconnected) {
1536                         wpa_s->disconnected = 0;
1537                         wpa_s->reassociate = 1;
1538                         wpa_supplicant_req_scan(wpa_s, 0, 0);
1539                 }
1540 #ifdef IEEE8021X_EAPOL
1541         } else if (os_strncmp(buf, "PREAUTH ", 8) == 0) {
1542                 if (wpa_supplicant_ctrl_iface_preauth(wpa_s, buf + 8))
1543                         reply_len = -1;
1544 #endif /* IEEE8021X_EAPOL */
1545 #ifdef CONFIG_PEERKEY
1546         } else if (os_strncmp(buf, "STKSTART ", 9) == 0) {
1547                 if (wpa_supplicant_ctrl_iface_stkstart(wpa_s, buf + 9))
1548                         reply_len = -1;
1549 #endif /* CONFIG_PEERKEY */
1550 #ifdef CONFIG_IEEE80211R
1551         } else if (os_strncmp(buf, "FT_DS ", 6) == 0) {
1552                 if (wpa_supplicant_ctrl_iface_ft_ds(wpa_s, buf + 6))
1553                         reply_len = -1;
1554 #endif /* CONFIG_IEEE80211R */
1555 #ifdef CONFIG_WPS
1556         } else if (os_strcmp(buf, "WPS_PBC") == 0) {
1557                 if (wpa_supplicant_ctrl_iface_wps_pbc(wpa_s, NULL))
1558                         reply_len = -1;
1559         } else if (os_strncmp(buf, "WPS_PBC ", 8) == 0) {
1560                 if (wpa_supplicant_ctrl_iface_wps_pbc(wpa_s, buf + 8))
1561                         reply_len = -1;
1562         } else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
1563                 reply_len = wpa_supplicant_ctrl_iface_wps_pin(wpa_s, buf + 8,
1564                                                               reply,
1565                                                               reply_size);
1566         } else if (os_strncmp(buf, "WPS_REG ", 8) == 0) {
1567                 if (wpa_supplicant_ctrl_iface_wps_reg(wpa_s, buf + 8))
1568                         reply_len = -1;
1569 #endif /* CONFIG_WPS */
1570         } else if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0)
1571         {
1572                 if (wpa_supplicant_ctrl_iface_ctrl_rsp(
1573                             wpa_s, buf + os_strlen(WPA_CTRL_RSP)))
1574                         reply_len = -1;
1575                 else
1576                         ctrl_rsp = 1;
1577         } else if (os_strcmp(buf, "RECONFIGURE") == 0) {
1578                 if (wpa_supplicant_reload_configuration(wpa_s))
1579                         reply_len = -1;
1580         } else if (os_strcmp(buf, "TERMINATE") == 0) {
1581                 eloop_terminate();
1582         } else if (os_strncmp(buf, "BSSID ", 6) == 0) {
1583                 if (wpa_supplicant_ctrl_iface_bssid(wpa_s, buf + 6))
1584                         reply_len = -1;
1585         } else if (os_strcmp(buf, "LIST_NETWORKS") == 0) {
1586                 reply_len = wpa_supplicant_ctrl_iface_list_networks(
1587                         wpa_s, reply, reply_size);
1588         } else if (os_strcmp(buf, "DISCONNECT") == 0) {
1589                 wpa_s->reassociate = 0;
1590                 wpa_s->disconnected = 1;
1591                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1592         } else if (os_strcmp(buf, "SCAN") == 0) {
1593                 wpa_s->scan_req = 2;
1594                 wpa_supplicant_req_scan(wpa_s, 0, 0);
1595         } else if (os_strcmp(buf, "SCAN_RESULTS") == 0) {
1596                 reply_len = wpa_supplicant_ctrl_iface_scan_results(
1597                         wpa_s, reply, reply_size);
1598         } else if (os_strncmp(buf, "SELECT_NETWORK ", 15) == 0) {
1599                 if (wpa_supplicant_ctrl_iface_select_network(wpa_s, buf + 15))
1600                         reply_len = -1;
1601         } else if (os_strncmp(buf, "ENABLE_NETWORK ", 15) == 0) {
1602                 if (wpa_supplicant_ctrl_iface_enable_network(wpa_s, buf + 15))
1603                         reply_len = -1;
1604         } else if (os_strncmp(buf, "DISABLE_NETWORK ", 16) == 0) {
1605                 if (wpa_supplicant_ctrl_iface_disable_network(wpa_s, buf + 16))
1606                         reply_len = -1;
1607         } else if (os_strcmp(buf, "ADD_NETWORK") == 0) {
1608                 reply_len = wpa_supplicant_ctrl_iface_add_network(
1609                         wpa_s, reply, reply_size);
1610         } else if (os_strncmp(buf, "REMOVE_NETWORK ", 15) == 0) {
1611                 if (wpa_supplicant_ctrl_iface_remove_network(wpa_s, buf + 15))
1612                         reply_len = -1;
1613         } else if (os_strncmp(buf, "SET_NETWORK ", 12) == 0) {
1614                 if (wpa_supplicant_ctrl_iface_set_network(wpa_s, buf + 12))
1615                         reply_len = -1;
1616         } else if (os_strncmp(buf, "GET_NETWORK ", 12) == 0) {
1617                 reply_len = wpa_supplicant_ctrl_iface_get_network(
1618                         wpa_s, buf + 12, reply, reply_size);
1619 #ifndef CONFIG_NO_CONFIG_WRITE
1620         } else if (os_strcmp(buf, "SAVE_CONFIG") == 0) {
1621                 if (wpa_supplicant_ctrl_iface_save_config(wpa_s))
1622                         reply_len = -1;
1623 #endif /* CONFIG_NO_CONFIG_WRITE */
1624         } else if (os_strncmp(buf, "GET_CAPABILITY ", 15) == 0) {
1625                 reply_len = wpa_supplicant_ctrl_iface_get_capability(
1626                         wpa_s, buf + 15, reply, reply_size);
1627         } else if (os_strncmp(buf, "AP_SCAN ", 8) == 0) {
1628                 if (wpa_supplicant_ctrl_iface_ap_scan(wpa_s, buf + 8))
1629                         reply_len = -1;
1630         } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
1631                 reply_len = wpa_supplicant_global_iface_list(
1632                         wpa_s->global, reply, reply_size);
1633         } else if (os_strcmp(buf, "INTERFACES") == 0) {
1634                 reply_len = wpa_supplicant_global_iface_interfaces(
1635                         wpa_s->global, reply, reply_size);
1636         } else if (os_strncmp(buf, "BSS ", 4) == 0) {
1637                 reply_len = wpa_supplicant_ctrl_iface_bss(
1638                         wpa_s, buf + 4, reply, reply_size);
1639         } else {
1640                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1641                 reply_len = 16;
1642         }
1643
1644         if (reply_len < 0) {
1645                 os_memcpy(reply, "FAIL\n", 5);
1646                 reply_len = 5;
1647         }
1648
1649         if (ctrl_rsp)
1650                 eapol_sm_notify_ctrl_response(wpa_s->eapol);
1651
1652         *resp_len = reply_len;
1653         return reply;
1654 }
1655
1656
1657 static int wpa_supplicant_global_iface_add(struct wpa_global *global,
1658                                            char *cmd)
1659 {
1660         struct wpa_interface iface;
1661         char *pos;
1662
1663         /*
1664          * <ifname>TAB<confname>TAB<driver>TAB<ctrl_interface>TAB<driver_param>
1665          * TAB<bridge_ifname>
1666          */
1667         wpa_printf(MSG_DEBUG, "CTRL_IFACE GLOBAL INTERFACE_ADD '%s'", cmd);
1668
1669         os_memset(&iface, 0, sizeof(iface));
1670
1671         do {
1672                 iface.ifname = pos = cmd;
1673                 pos = os_strchr(pos, '\t');
1674                 if (pos)
1675                         *pos++ = '\0';
1676                 if (iface.ifname[0] == '\0')
1677                         return -1;
1678                 if (pos == NULL)
1679                         break;
1680
1681                 iface.confname = pos;
1682                 pos = os_strchr(pos, '\t');
1683                 if (pos)
1684                         *pos++ = '\0';
1685                 if (iface.confname[0] == '\0')
1686                         iface.confname = NULL;
1687                 if (pos == NULL)
1688                         break;
1689
1690                 iface.driver = pos;
1691                 pos = os_strchr(pos, '\t');
1692                 if (pos)
1693                         *pos++ = '\0';
1694                 if (iface.driver[0] == '\0')
1695                         iface.driver = NULL;
1696                 if (pos == NULL)
1697                         break;
1698
1699                 iface.ctrl_interface = pos;
1700                 pos = os_strchr(pos, '\t');
1701                 if (pos)
1702                         *pos++ = '\0';
1703                 if (iface.ctrl_interface[0] == '\0')
1704                         iface.ctrl_interface = NULL;
1705                 if (pos == NULL)
1706                         break;
1707
1708                 iface.driver_param = pos;
1709                 pos = os_strchr(pos, '\t');
1710                 if (pos)
1711                         *pos++ = '\0';
1712                 if (iface.driver_param[0] == '\0')
1713                         iface.driver_param = NULL;
1714                 if (pos == NULL)
1715                         break;
1716
1717                 iface.bridge_ifname = pos;
1718                 pos = os_strchr(pos, '\t');
1719                 if (pos)
1720                         *pos++ = '\0';
1721                 if (iface.bridge_ifname[0] == '\0')
1722                         iface.bridge_ifname = NULL;
1723                 if (pos == NULL)
1724                         break;
1725         } while (0);
1726
1727         if (wpa_supplicant_get_iface(global, iface.ifname))
1728                 return -1;
1729
1730         return wpa_supplicant_add_iface(global, &iface) ? 0 : -1;
1731 }
1732
1733
1734 static int wpa_supplicant_global_iface_remove(struct wpa_global *global,
1735                                               char *cmd)
1736 {
1737         struct wpa_supplicant *wpa_s;
1738
1739         wpa_printf(MSG_DEBUG, "CTRL_IFACE GLOBAL INTERFACE_REMOVE '%s'", cmd);
1740
1741         wpa_s = wpa_supplicant_get_iface(global, cmd);
1742         if (wpa_s == NULL)
1743                 return -1;
1744         return wpa_supplicant_remove_iface(global, wpa_s);
1745 }
1746
1747
1748 static void wpa_free_iface_info(struct wpa_interface_info *iface)
1749 {
1750         struct wpa_interface_info *prev;
1751
1752         while (iface) {
1753                 prev = iface;
1754                 iface = iface->next;
1755
1756                 os_free(prev->ifname);
1757                 os_free(prev->desc);
1758                 os_free(prev);
1759         }
1760 }
1761
1762
1763 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
1764                                             char *buf, int len)
1765 {
1766         int i, res;
1767         struct wpa_interface_info *iface = NULL, *last = NULL, *tmp;
1768         char *pos, *end;
1769
1770         for (i = 0; wpa_supplicant_drivers[i]; i++) {
1771                 struct wpa_driver_ops *drv = wpa_supplicant_drivers[i];
1772                 if (drv->get_interfaces == NULL)
1773                         continue;
1774                 tmp = drv->get_interfaces(global->drv_priv);
1775                 if (tmp == NULL)
1776                         continue;
1777
1778                 if (last == NULL)
1779                         iface = last = tmp;
1780                 else
1781                         last->next = tmp;
1782                 while (last->next)
1783                         last = last->next;
1784         }
1785
1786         pos = buf;
1787         end = buf + len;
1788         for (tmp = iface; tmp; tmp = tmp->next) {
1789                 res = os_snprintf(pos, end - pos, "%s\t%s\t%s\n",
1790                                   tmp->drv_name, tmp->ifname,
1791                                   tmp->desc ? tmp->desc : "");
1792                 if (res < 0 || res >= end - pos) {
1793                         *pos = '\0';
1794                         break;
1795                 }
1796                 pos += res;
1797         }
1798
1799         wpa_free_iface_info(iface);
1800
1801         return pos - buf;
1802 }
1803
1804
1805 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
1806                                                   char *buf, int len)
1807 {
1808         int res;
1809         char *pos, *end;
1810         struct wpa_supplicant *wpa_s;
1811
1812         wpa_s = global->ifaces;
1813         pos = buf;
1814         end = buf + len;
1815
1816         while (wpa_s) {
1817                 res = os_snprintf(pos, end - pos, "%s\n", wpa_s->ifname);
1818                 if (res < 0 || res >= end - pos) {
1819                         *pos = '\0';
1820                         break;
1821                 }
1822                 pos += res;
1823                 wpa_s = wpa_s->next;
1824         }
1825         return pos - buf;
1826 }
1827
1828
1829 char * wpa_supplicant_global_ctrl_iface_process(struct wpa_global *global,
1830                                                 char *buf, size_t *resp_len)
1831 {
1832         char *reply;
1833         const int reply_size = 2048;
1834         int reply_len;
1835
1836         wpa_hexdump_ascii(MSG_DEBUG, "RX global ctrl_iface",
1837                           (const u8 *) buf, os_strlen(buf));
1838
1839         reply = os_malloc(reply_size);
1840         if (reply == NULL) {
1841                 *resp_len = 1;
1842                 return NULL;
1843         }
1844
1845         os_memcpy(reply, "OK\n", 3);
1846         reply_len = 3;
1847
1848         if (os_strcmp(buf, "PING") == 0) {
1849                 os_memcpy(reply, "PONG\n", 5);
1850                 reply_len = 5;
1851         } else if (os_strncmp(buf, "INTERFACE_ADD ", 14) == 0) {
1852                 if (wpa_supplicant_global_iface_add(global, buf + 14))
1853                         reply_len = -1;
1854         } else if (os_strncmp(buf, "INTERFACE_REMOVE ", 17) == 0) {
1855                 if (wpa_supplicant_global_iface_remove(global, buf + 17))
1856                         reply_len = -1;
1857         } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
1858                 reply_len = wpa_supplicant_global_iface_list(
1859                         global, reply, reply_size);
1860         } else if (os_strcmp(buf, "INTERFACES") == 0) {
1861                 reply_len = wpa_supplicant_global_iface_interfaces(
1862                         global, reply, reply_size);
1863         } else if (os_strcmp(buf, "TERMINATE") == 0) {
1864                 eloop_terminate();
1865         } else {
1866                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1867                 reply_len = 16;
1868         }
1869
1870         if (reply_len < 0) {
1871                 os_memcpy(reply, "FAIL\n", 5);
1872                 reply_len = 5;
1873         }
1874
1875         *resp_len = reply_len;
1876         return reply;
1877 }