contrib/hostapd/driver_test.c

   1 /*
   2  * hostapd / Driver interface for development testing
   3  * Copyright (c) 2004-2007, 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 #include <sys/ioctl.h>
  17 #include <sys/un.h>
  18 #include <dirent.h>
  19
  20 #include "hostapd.h"
  21 #include "driver.h"
  22 #include "sha1.h"
  23 #include "eloop.h"
  24 #include "ieee802_1x.h"
  25 #include "sta_info.h"
  26 #include "eapol_sm.h"
  27 #include "wpa.h"
  28 #include "accounting.h"
  29 #include "radius.h"
  30 #include "l2_packet.h"
  31 #include "ieee802_11.h"
  32 #include "hw_features.h"
  33
  34
  35 struct test_client_socket {
  36         struct test_client_socket *next;
  37         u8 addr[ETH_ALEN];
  38         struct sockaddr_un un;
  39         socklen_t unlen;
  40         struct test_driver_bss *bss;
  41 };
  42
  43 struct test_driver_bss {
  44         struct test_driver_bss *next;
  45         char ifname[IFNAMSIZ + 1];
  46         u8 bssid[ETH_ALEN];
  47         u8 *ie;
  48         size_t ielen;
  49         u8 ssid[32];
  50         size_t ssid_len;
  51         int privacy;
  52 };
  53
  54 struct test_driver_data {
  55         struct driver_ops ops;
  56         struct hostapd_data *hapd;
  57         struct test_client_socket *cli;
  58         int test_socket;
  59         struct test_driver_bss *bss;
  60         char *socket_dir;
  61         char *own_socket_path;
  62 };
  63
  64 static const struct driver_ops test_driver_ops;
  65
  66
  67 static void test_driver_free_bss(struct test_driver_bss *bss)
  68 {
  69         free(bss->ie);
  70         free(bss);
  71 }
  72
  73
  74 static void test_driver_free_priv(struct test_driver_data *drv)
  75 {
  76         struct test_driver_bss *bss, *prev;
  77
  78         if (drv == NULL)
  79                 return;
  80
  81         bss = drv->bss;
  82         while (bss) {
  83                 prev = bss;
  84                 bss = bss->next;
  85                 test_driver_free_bss(prev);
  86         }
  87         free(drv->own_socket_path);
  88         free(drv->socket_dir);
  89         free(drv);
  90 }
  91
  92
  93 static struct test_client_socket *
  94 test_driver_get_cli(struct test_driver_data *drv, struct sockaddr_un *from,
  95                     socklen_t fromlen)
  96 {
  97         struct test_client_socket *cli = drv->cli;
  98
  99         while (cli) {
 100                 if (cli->unlen == fromlen &&
 101                     strncmp(cli->un.sun_path, from->sun_path,
 102                             fromlen - sizeof(cli->un.sun_family)) == 0)
 103                         return cli;
 104                 cli = cli->next;
 105         }
 106
 107         return NULL;
 108 }
 109
 110
 111 static int test_driver_send_eapol(void *priv, const u8 *addr, const u8 *data,
 112                                   size_t data_len, int encrypt,
 113                                   const u8 *own_addr)
 114 {
 115         struct test_driver_data *drv = priv;
 116         struct test_client_socket *cli;
 117         struct msghdr msg;
 118         struct iovec io[3];
 119         struct l2_ethhdr eth;
 120
 121         if (drv->test_socket < 0)
 122                 return -1;
 123
 124         cli = drv->cli;
 125         while (cli) {
 126                 if (memcmp(cli->addr, addr, ETH_ALEN) == 0)
 127                         break;
 128                 cli = cli->next;
 129         }
 130
 131         if (!cli) {
 132                 wpa_printf(MSG_DEBUG, "%s: no destination client entry",
 133                            __func__);
 134                 return -1;
 135         }
 136
 137         memcpy(eth.h_dest, addr, ETH_ALEN);
 138         memcpy(eth.h_source, own_addr, ETH_ALEN);
 139         eth.h_proto = htons(ETH_P_EAPOL);
 140
 141         io[0].iov_base = "EAPOL ";
 142         io[0].iov_len = 6;
 143         io[1].iov_base = &eth;
 144         io[1].iov_len = sizeof(eth);
 145         io[2].iov_base = (u8 *) data;
 146         io[2].iov_len = data_len;
 147
 148         memset(&msg, 0, sizeof(msg));
 149         msg.msg_iov = io;
 150         msg.msg_iovlen = 3;
 151         msg.msg_name = &cli->un;
 152         msg.msg_namelen = cli->unlen;
 153         return sendmsg(drv->test_socket, &msg, 0);
 154 }
 155
 156
 157 static int test_driver_send_mgmt_frame(void *priv, const void *buf,
 158                                        size_t len, int flags)
 159 {
 160         struct test_driver_data *drv = priv;
 161         struct msghdr msg;
 162         struct iovec io[2];
 163         const u8 *dest;
 164         int ret = 0, broadcast = 0;
 165         char desttxt[30];
 166         struct sockaddr_un addr;
 167         struct dirent *dent;
 168         DIR *dir;
 169         struct ieee80211_hdr *hdr;
 170         u16 fc;
 171
 172         if (drv->test_socket < 0 || len < 10 || drv->socket_dir == NULL) {
 173                 wpa_printf(MSG_DEBUG, "%s: invalid parameters (sock=%d len=%d "
 174                            "socket_dir=%p)",
 175                            __func__, drv->test_socket, len, drv->socket_dir);
 176                 return -1;
 177         }
 178
 179         dest = buf;
 180         dest += 4;
 181         broadcast = memcmp(dest, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0;
 182         snprintf(desttxt, sizeof(desttxt), MACSTR, MAC2STR(dest));
 183
 184         io[0].iov_base = "MLME ";
 185         io[0].iov_len = 5;
 186         io[1].iov_base = (void *) buf;
 187         io[1].iov_len = len;
 188
 189         memset(&msg, 0, sizeof(msg));
 190         msg.msg_iov = io;
 191         msg.msg_iovlen = 2;
 192
 193         dir = opendir(drv->socket_dir);
 194         if (dir == NULL) {
 195                 perror("test_driver: opendir");
 196                 return -1;
 197         }
 198         while ((dent = readdir(dir))) {
 199 #ifdef _DIRENT_HAVE_D_TYPE
 200                 /* Skip the file if it is not a socket. Also accept
 201                  * DT_UNKNOWN (0) in case the C library or underlying file
 202                  * system does not support d_type. */
 203                 if (dent->d_type != DT_SOCK && dent->d_type != DT_UNKNOWN)
 204                         continue;
 205 #endif /* _DIRENT_HAVE_D_TYPE */
 206                 if (strcmp(dent->d_name, ".") == 0 ||
 207                     strcmp(dent->d_name, "..") == 0)
 208                         continue;
 209
 210                 memset(&addr, 0, sizeof(addr));
 211                 addr.sun_family = AF_UNIX;
 212                 snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s",
 213                          drv->socket_dir, dent->d_name);
 214
 215                 if (strcmp(addr.sun_path, drv->own_socket_path) == 0)
 216                         continue;
 217                 if (!broadcast && strstr(dent->d_name, desttxt) == NULL)
 218                         continue;
 219
 220                 wpa_printf(MSG_DEBUG, "%s: Send management frame to %s",
 221                            __func__, dent->d_name);
 222
 223                 msg.msg_name = &addr;
 224                 msg.msg_namelen = sizeof(addr);
 225                 ret = sendmsg(drv->test_socket, &msg, 0);
 226                 if (ret < 0)
 227                         perror("driver_test: sendmsg");
 228         }
 229         closedir(dir);
 230
 231         hdr = (struct ieee80211_hdr *) buf;
 232         fc = le_to_host16(hdr->frame_control);
 233         ieee802_11_mgmt_cb(drv->hapd, (u8 *) buf, len, WLAN_FC_GET_STYPE(fc),
 234                            ret >= 0);
 235
 236         return ret;
 237 }
 238
 239
 240 static void test_driver_scan(struct test_driver_data *drv,
 241                              struct sockaddr_un *from, socklen_t fromlen)
 242 {
 243         char buf[512], *pos, *end;
 244         int ret;
 245         struct test_driver_bss *bss;
 246
 247         wpa_printf(MSG_DEBUG, "test_driver: SCAN");
 248
 249         for (bss = drv->bss; bss; bss = bss->next) {
 250                 pos = buf;
 251                 end = buf + sizeof(buf);
 252
 253                 /* reply: SCANRESP BSSID SSID IEs */
 254                 ret = snprintf(pos, end - pos, "SCANRESP " MACSTR " ",
 255                                MAC2STR(bss->bssid));
 256                 if (ret < 0 || ret >= end - pos)
 257                         return;
 258                 pos += ret;
 259                 pos += wpa_snprintf_hex(pos, end - pos,
 260                                         bss->ssid, bss->ssid_len);
 261                 ret = snprintf(pos, end - pos, " ");
 262                 if (ret < 0 || ret >= end - pos)
 263                         return;
 264                 pos += ret;
 265                 pos += wpa_snprintf_hex(pos, end - pos, bss->ie, bss->ielen);
 266
 267                 if (bss->privacy) {
 268                         ret = snprintf(pos, end - pos, " PRIVACY");
 269                         if (ret < 0 || ret >= end - pos)
 270                                 return;
 271                         pos += ret;
 272                 }
 273
 274                 sendto(drv->test_socket, buf, pos - buf, 0,
 275                        (struct sockaddr *) from, fromlen);
 276         }
 277 }
 278
 279
 280 static struct hostapd_data * test_driver_get_hapd(struct test_driver_data *drv,
 281                                                   struct test_driver_bss *bss)
 282 {
 283         struct hostapd_iface *iface = drv->hapd->iface;
 284         struct hostapd_data *hapd = NULL;
 285         size_t i;
 286
 287         if (bss == NULL) {
 288                 wpa_printf(MSG_DEBUG, "%s: bss == NULL", __func__);
 289                 return NULL;
 290         }
 291
 292         for (i = 0; i < iface->num_bss; i++) {
 293                 hapd = iface->bss[i];
 294                 if (memcmp(hapd->own_addr, bss->bssid, ETH_ALEN) == 0)
 295                         break;
 296         }
 297         if (i == iface->num_bss) {
 298                 wpa_printf(MSG_DEBUG, "%s: no matching interface entry found "
 299                            "for BSSID " MACSTR, __func__, MAC2STR(bss->bssid));
 300                 return NULL;
 301         }
 302
 303         return hapd;
 304 }
 305
 306
 307 static int test_driver_new_sta(struct test_driver_data *drv,
 308                                struct test_driver_bss *bss, const u8 *addr,
 309                                const u8 *ie, size_t ielen)
 310 {
 311         struct hostapd_data *hapd;
 312         struct sta_info *sta;
 313         int new_assoc, res;
 314
 315         hapd = test_driver_get_hapd(drv, bss);
 316         if (hapd == NULL)
 317                 return -1;
 318
 319         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 320                 HOSTAPD_LEVEL_INFO, "associated");
 321
 322         sta = ap_get_sta(hapd, addr);
 323         if (sta) {
 324                 accounting_sta_stop(hapd, sta);
 325         } else {
 326                 sta = ap_sta_add(hapd, addr);
 327                 if (sta == NULL)
 328                         return -1;
 329         }
 330         accounting_sta_get_id(hapd, sta);
 331
 332         if (hapd->conf->wpa) {
 333                 if (ie == NULL || ielen == 0) {
 334                         printf("test_driver: no IE from STA\n");
 335                         return -1;
 336                 }
 337                 if (sta->wpa_sm == NULL)
 338                         sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
 339                                                         sta->addr);
 340                 if (sta->wpa_sm == NULL) {
 341                         printf("test_driver: Failed to initialize WPA state "
 342                                "machine\n");
 343                         return -1;
 344                 }
 345                 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 346                                           ie, ielen);
 347                 if (res != WPA_IE_OK) {
 348                         printf("WPA/RSN information element rejected? "
 349                                "(res %u)\n", res);
 350                         return -1;
 351                 }
 352         }
 353
 354         new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
 355         sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
 356         wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
 357
 358         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
 359
 360         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
 361
 362         return 0;
 363 }
 364
 365
 366 static void test_driver_assoc(struct test_driver_data *drv,
 367                               struct sockaddr_un *from, socklen_t fromlen,
 368                               char *data)
 369 {
 370         struct test_client_socket *cli;
 371         u8 ie[256], ssid[32];
 372         size_t ielen, ssid_len = 0;
 373         char *pos, *pos2, cmd[50];
 374         struct test_driver_bss *bss;
 375
 376         /* data: STA-addr SSID(hex) IEs(hex) */
 377
 378         cli = wpa_zalloc(sizeof(*cli));
 379         if (cli == NULL)
 380                 return;
 381
 382         if (hwaddr_aton(data, cli->addr)) {
 383                 printf("test_socket: Invalid MAC address '%s' in ASSOC\n",
 384                        data);
 385                 free(cli);
 386                 return;
 387         }
 388         pos = data + 17;
 389         while (*pos == ' ')
 390                 pos++;
 391         pos2 = strchr(pos, ' ');
 392         ielen = 0;
 393         if (pos2) {
 394                 ssid_len = (pos2 - pos) / 2;
 395                 if (hexstr2bin(pos, ssid, ssid_len) < 0) {
 396                         wpa_printf(MSG_DEBUG, "%s: Invalid SSID", __func__);
 397                         free(cli);
 398                         return;
 399                 }
 400                 wpa_hexdump_ascii(MSG_DEBUG, "test_driver_assoc: SSID",
 401                                   ssid, ssid_len);
 402
 403                 pos = pos2 + 1;
 404                 ielen = strlen(pos) / 2;
 405                 if (ielen > sizeof(ie))
 406                         ielen = sizeof(ie);
 407                 if (hexstr2bin(pos, ie, ielen) < 0)
 408                         ielen = 0;
 409         }
 410
 411         for (bss = drv->bss; bss; bss = bss->next) {
 412                 if (bss->ssid_len == ssid_len &&
 413                     memcmp(bss->ssid, ssid, ssid_len) == 0)
 414                         break;
 415         }
 416         if (bss == NULL) {
 417                 wpa_printf(MSG_DEBUG, "%s: No matching SSID found from "
 418                            "configured BSSes", __func__);
 419                 free(cli);
 420                 return;
 421         }
 422
 423         cli->bss = bss;
 424         memcpy(&cli->un, from, sizeof(cli->un));
 425         cli->unlen = fromlen;
 426         cli->next = drv->cli;
 427         drv->cli = cli;
 428         wpa_hexdump_ascii(MSG_DEBUG, "test_socket: ASSOC sun_path",
 429                           (const u8 *) cli->un.sun_path,
 430                           cli->unlen - sizeof(cli->un.sun_family));
 431
 432         snprintf(cmd, sizeof(cmd), "ASSOCRESP " MACSTR " 0",
 433                  MAC2STR(bss->bssid));
 434         sendto(drv->test_socket, cmd, strlen(cmd), 0,
 435                (struct sockaddr *) from, fromlen);
 436
 437         if (test_driver_new_sta(drv, bss, cli->addr, ie, ielen) < 0) {
 438                 wpa_printf(MSG_DEBUG, "test_driver: failed to add new STA");
 439         }
 440 }
 441
 442
 443 static void test_driver_disassoc(struct test_driver_data *drv,
 444                                  struct sockaddr_un *from, socklen_t fromlen)
 445 {
 446         struct test_client_socket *cli;
 447         struct sta_info *sta;
 448
 449         cli = test_driver_get_cli(drv, from, fromlen);
 450         if (!cli)
 451                 return;
 452
 453         hostapd_logger(drv->hapd, cli->addr, HOSTAPD_MODULE_IEEE80211,
 454                        HOSTAPD_LEVEL_INFO, "disassociated");
 455
 456         sta = ap_get_sta(drv->hapd, cli->addr);
 457         if (sta != NULL) {
 458                 sta->flags &= ~WLAN_STA_ASSOC;
 459                 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
 460                 sta->acct_terminate_cause =
 461                         RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
 462                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 463                 ap_free_sta(drv->hapd, sta);
 464         }
 465 }
 466
 467
 468 static void test_driver_eapol(struct test_driver_data *drv,
 469                               struct sockaddr_un *from, socklen_t fromlen,
 470                               u8 *data, size_t datalen)
 471 {
 472         struct test_client_socket *cli;
 473         if (datalen > 14) {
 474                 u8 *proto = data + 2 * ETH_ALEN;
 475                 /* Skip Ethernet header */
 476                 wpa_printf(MSG_DEBUG, "test_driver: dst=" MACSTR " src="
 477                            MACSTR " proto=%04x",
 478                            MAC2STR(data), MAC2STR(data + ETH_ALEN),
 479                            (proto[0] << 8) | proto[1]);
 480                 data += 14;
 481                 datalen -= 14;
 482         }
 483         cli = test_driver_get_cli(drv, from, fromlen);
 484         if (cli) {
 485                 struct hostapd_data *hapd;
 486                 hapd = test_driver_get_hapd(drv, cli->bss);
 487                 if (hapd == NULL)
 488                         return;
 489                 ieee802_1x_receive(hapd, cli->addr, data, datalen);
 490         } else {
 491                 wpa_printf(MSG_DEBUG, "test_socket: EAPOL from unknown "
 492                            "client");
 493         }
 494 }
 495
 496
 497 static void test_driver_mlme(struct test_driver_data *drv,
 498                              struct sockaddr_un *from, socklen_t fromlen,
 499                              u8 *data, size_t datalen)
 500 {
 501         struct ieee80211_hdr *hdr;
 502         u16 fc;
 503
 504         hdr = (struct ieee80211_hdr *) data;
 505
 506         if (test_driver_get_cli(drv, from, fromlen) == NULL && datalen >= 16) {
 507                 struct test_client_socket *cli;
 508                 cli = wpa_zalloc(sizeof(*cli));
 509                 if (cli == NULL)
 510                         return;
 511                 wpa_printf(MSG_DEBUG, "Adding client entry for " MACSTR,
 512                            MAC2STR(hdr->addr2));
 513                 memcpy(cli->addr, hdr->addr2, ETH_ALEN);
 514                 memcpy(&cli->un, from, sizeof(cli->un));
 515                 cli->unlen = fromlen;
 516                 cli->next = drv->cli;
 517                 drv->cli = cli;
 518         }
 519
 520         wpa_hexdump(MSG_MSGDUMP, "test_driver_mlme: received frame",
 521                     data, datalen);
 522         fc = le_to_host16(hdr->frame_control);
 523         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT) {
 524                 wpa_printf(MSG_ERROR, "%s: received non-mgmt frame",
 525                            __func__);
 526                 return;
 527         }
 528         ieee802_11_mgmt(drv->hapd, data, datalen, WLAN_FC_GET_STYPE(fc), NULL);
 529 }
 530
 531
 532 static void test_driver_receive_unix(int sock, void *eloop_ctx, void *sock_ctx)
 533 {
 534         struct test_driver_data *drv = eloop_ctx;
 535         char buf[2000];
 536         int res;
 537         struct sockaddr_un from;
 538         socklen_t fromlen = sizeof(from);
 539
 540         res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
 541                        (struct sockaddr *) &from, &fromlen);
 542         if (res < 0) {
 543                 perror("recvfrom(test_socket)");
 544                 return;
 545         }
 546         buf[res] = '\0';
 547
 548         wpa_printf(MSG_DEBUG, "test_driver: received %u bytes", res);
 549
 550         if (strcmp(buf, "SCAN") == 0) {
 551                 test_driver_scan(drv, &from, fromlen);
 552         } else if (strncmp(buf, "ASSOC ", 6) == 0) {
 553                 test_driver_assoc(drv, &from, fromlen, buf + 6);
 554         } else if (strcmp(buf, "DISASSOC") == 0) {
 555                 test_driver_disassoc(drv, &from, fromlen);
 556         } else if (strncmp(buf, "EAPOL ", 6) == 0) {
 557                 test_driver_eapol(drv, &from, fromlen, (u8 *) buf + 6,
 558                                   res - 6);
 559         } else if (strncmp(buf, "MLME ", 5) == 0) {
 560                 test_driver_mlme(drv, &from, fromlen, (u8 *) buf + 5, res - 5);
 561         } else {
 562                 wpa_hexdump_ascii(MSG_DEBUG, "Unknown test_socket command",
 563                                   (u8 *) buf, res);
 564         }
 565 }
 566
 567
 568 static int test_driver_set_generic_elem(const char *ifname, void *priv,
 569                                         const u8 *elem, size_t elem_len)
 570 {
 571         struct test_driver_data *drv = priv;
 572         struct test_driver_bss *bss;
 573
 574         for (bss = drv->bss; bss; bss = bss->next) {
 575                 if (strcmp(bss->ifname, ifname) != 0)
 576                         continue;
 577
 578                 free(bss->ie);
 579
 580                 if (elem == NULL) {
 581                         bss->ie = NULL;
 582                         bss->ielen = 0;
 583                         return 0;
 584                 }
 585
 586                 bss->ie = malloc(elem_len);
 587                 if (bss->ie) {
 588                         memcpy(bss->ie, elem, elem_len);
 589                         bss->ielen = elem_len;
 590                         return 0;
 591                 } else {
 592                         bss->ielen = 0;
 593                         return -1;
 594                 }
 595         }
 596
 597         return -1;
 598 }
 599
 600
 601 static int test_driver_sta_deauth(void *priv, const u8 *addr, int reason)
 602 {
 603         struct test_driver_data *drv = priv;
 604         struct test_client_socket *cli;
 605
 606         if (drv->test_socket < 0)
 607                 return -1;
 608
 609         cli = drv->cli;
 610         while (cli) {
 611                 if (memcmp(cli->addr, addr, ETH_ALEN) == 0)
 612                         break;
 613                 cli = cli->next;
 614         }
 615
 616         if (!cli)
 617                 return -1;
 618
 619         return sendto(drv->test_socket, "DEAUTH", 6, 0,
 620                       (struct sockaddr *) &cli->un, cli->unlen);
 621 }
 622
 623
 624 static int test_driver_sta_disassoc(void *priv, const u8 *addr, int reason)
 625 {
 626         struct test_driver_data *drv = priv;
 627         struct test_client_socket *cli;
 628
 629         if (drv->test_socket < 0)
 630                 return -1;
 631
 632         cli = drv->cli;
 633         while (cli) {
 634                 if (memcmp(cli->addr, addr, ETH_ALEN) == 0)
 635                         break;
 636                 cli = cli->next;
 637         }
 638
 639         if (!cli)
 640                 return -1;
 641
 642         return sendto(drv->test_socket, "DISASSOC", 8, 0,
 643                       (struct sockaddr *) &cli->un, cli->unlen);
 644 }
 645
 646
 647 static struct hostapd_hw_modes *
 648 test_driver_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
 649 {
 650         struct hostapd_hw_modes *modes;
 651
 652         *num_modes = 3;
 653         *flags = 0;
 654         modes = wpa_zalloc(*num_modes * sizeof(struct hostapd_hw_modes));
 655         if (modes == NULL)
 656                 return NULL;
 657         modes[0].mode = HOSTAPD_MODE_IEEE80211G;
 658         modes[0].num_channels = 1;
 659         modes[0].num_rates = 1;
 660         modes[0].channels = wpa_zalloc(sizeof(struct hostapd_channel_data));
 661         modes[0].rates = wpa_zalloc(sizeof(struct hostapd_rate_data));
 662         if (modes[0].channels == NULL || modes[0].rates == NULL) {
 663                 hostapd_free_hw_features(modes, *num_modes);
 664                 return NULL;
 665         }
 666         modes[0].channels[0].chan = 1;
 667         modes[0].channels[0].freq = 2412;
 668         modes[0].channels[0].flag = HOSTAPD_CHAN_W_SCAN |
 669                 HOSTAPD_CHAN_W_ACTIVE_SCAN;
 670         modes[0].rates[0].rate = 10;
 671         modes[0].rates[0].flags = HOSTAPD_RATE_BASIC | HOSTAPD_RATE_SUPPORTED |
 672                 HOSTAPD_RATE_CCK | HOSTAPD_RATE_MANDATORY;
 673
 674         modes[1].mode = HOSTAPD_MODE_IEEE80211B;
 675         modes[1].num_channels = 1;
 676         modes[1].num_rates = 1;
 677         modes[1].channels = wpa_zalloc(sizeof(struct hostapd_channel_data));
 678         modes[1].rates = wpa_zalloc(sizeof(struct hostapd_rate_data));
 679         if (modes[1].channels == NULL || modes[1].rates == NULL) {
 680                 hostapd_free_hw_features(modes, *num_modes);
 681                 return NULL;
 682         }
 683         modes[1].channels[0].chan = 1;
 684         modes[1].channels[0].freq = 2412;
 685         modes[1].channels[0].flag = HOSTAPD_CHAN_W_SCAN |
 686                 HOSTAPD_CHAN_W_ACTIVE_SCAN;
 687         modes[1].rates[0].rate = 10;
 688         modes[1].rates[0].flags = HOSTAPD_RATE_BASIC | HOSTAPD_RATE_SUPPORTED |
 689                 HOSTAPD_RATE_CCK | HOSTAPD_RATE_MANDATORY;
 690
 691         modes[2].mode = HOSTAPD_MODE_IEEE80211A;
 692         modes[2].num_channels = 1;
 693         modes[2].num_rates = 1;
 694         modes[2].channels = wpa_zalloc(sizeof(struct hostapd_channel_data));
 695         modes[2].rates = wpa_zalloc(sizeof(struct hostapd_rate_data));
 696         if (modes[2].channels == NULL || modes[2].rates == NULL) {
 697                 hostapd_free_hw_features(modes, *num_modes);
 698                 return NULL;
 699         }
 700         modes[2].channels[0].chan = 60;
 701         modes[2].channels[0].freq = 5300;
 702         modes[2].channels[0].flag = HOSTAPD_CHAN_W_SCAN |
 703                 HOSTAPD_CHAN_W_ACTIVE_SCAN;
 704         modes[2].rates[0].rate = 60;
 705         modes[2].rates[0].flags = HOSTAPD_RATE_BASIC | HOSTAPD_RATE_SUPPORTED |
 706                 HOSTAPD_RATE_MANDATORY;
 707
 708         return modes;
 709 }
 710
 711
 712 static int test_driver_bss_add(void *priv, const char *ifname, const u8 *bssid)
 713 {
 714         struct test_driver_data *drv = priv;
 715         struct test_driver_bss *bss;
 716
 717         wpa_printf(MSG_DEBUG, "%s(ifname=%s bssid=" MACSTR ")",
 718                    __func__, ifname, MAC2STR(bssid));
 719
 720         bss = wpa_zalloc(sizeof(*bss));
 721         if (bss == NULL)
 722                 return -1;
 723
 724         strncpy(bss->ifname, ifname, IFNAMSIZ);
 725         memcpy(bss->bssid, bssid, ETH_ALEN);
 726
 727         bss->next = drv->bss;
 728         drv->bss = bss;
 729
 730         return 0;
 731 }
 732
 733
 734 static int test_driver_bss_remove(void *priv, const char *ifname)
 735 {
 736         struct test_driver_data *drv = priv;
 737         struct test_driver_bss *bss, *prev;
 738         struct test_client_socket *cli, *prev_c;
 739
 740         wpa_printf(MSG_DEBUG, "%s(ifname=%s)", __func__, ifname);
 741
 742         for (prev = NULL, bss = drv->bss; bss; prev = bss, bss = bss->next) {
 743                 if (strcmp(bss->ifname, ifname) != 0)
 744                         continue;
 745
 746                 if (prev)
 747                         prev->next = bss->next;
 748                 else
 749                         drv->bss = bss->next;
 750
 751                 for (prev_c = NULL, cli = drv->cli; cli;
 752                      prev_c = cli, cli = cli->next) {
 753                         if (cli->bss != bss)
 754                                 continue;
 755                         if (prev_c)
 756                                 prev_c->next = cli->next;
 757                         else
 758                                 drv->cli = cli->next;
 759                         free(cli);
 760                         break;
 761                 }
 762
 763                 test_driver_free_bss(bss);
 764                 return 0;
 765         }
 766
 767         return -1;
 768 }
 769
 770
 771 static int test_driver_if_add(const char *iface, void *priv,
 772                               enum hostapd_driver_if_type type, char *ifname,
 773                               const u8 *addr)
 774 {
 775         wpa_printf(MSG_DEBUG, "%s(iface=%s type=%d ifname=%s)",
 776                    __func__, iface, type, ifname);
 777         return 0;
 778 }
 779
 780
 781 static int test_driver_if_update(void *priv, enum hostapd_driver_if_type type,
 782                                  char *ifname, const u8 *addr)
 783 {
 784         wpa_printf(MSG_DEBUG, "%s(type=%d ifname=%s)", __func__, type, ifname);
 785         return 0;
 786 }
 787
 788
 789 static int test_driver_if_remove(void *priv, enum hostapd_driver_if_type type,
 790                                  const char *ifname, const u8 *addr)
 791 {
 792         wpa_printf(MSG_DEBUG, "%s(type=%d ifname=%s)", __func__, type, ifname);
 793         return 0;
 794 }
 795
 796
 797 static int test_driver_valid_bss_mask(void *priv, const u8 *addr,
 798                                       const u8 *mask)
 799 {
 800         return 0;
 801 }
 802
 803
 804 static int test_driver_set_ssid(const char *ifname, void *priv, const u8 *buf,
 805                                 int len)
 806 {
 807         struct test_driver_data *drv = priv;
 808         struct test_driver_bss *bss;
 809
 810         wpa_printf(MSG_DEBUG, "%s(ifname=%s)", __func__, ifname);
 811         wpa_hexdump_ascii(MSG_DEBUG, "test_driver_set_ssid: SSID", buf, len);
 812
 813         for (bss = drv->bss; bss; bss = bss->next) {
 814                 if (strcmp(bss->ifname, ifname) != 0)
 815                         continue;
 816
 817                 if (len < 0 || (size_t) len > sizeof(bss->ssid))
 818                         return -1;
 819
 820                 memcpy(bss->ssid, buf, len);
 821                 bss->ssid_len = len;
 822
 823                 return 0;
 824         }
 825
 826         return -1;
 827 }
 828
 829
 830 static int test_driver_set_privacy(const char *ifname, void *priv, int enabled)
 831 {
 832         struct test_driver_data *drv = priv;
 833         struct test_driver_bss *bss;
 834
 835         wpa_printf(MSG_DEBUG, "%s(ifname=%s enabled=%d)",
 836                    __func__, ifname, enabled);
 837
 838         for (bss = drv->bss; bss; bss = bss->next) {
 839                 if (strcmp(bss->ifname, ifname) != 0)
 840                         continue;
 841
 842                 bss->privacy = enabled;
 843
 844                 return 0;
 845         }
 846
 847         return -1;
 848 }
 849
 850
 851 static int test_driver_set_encryption(const char *iface, void *priv,
 852                                       const char *alg, const u8 *addr, int idx,
 853                                       const u8 *key, size_t key_len, int txkey)
 854 {
 855         wpa_printf(MSG_DEBUG, "%s(iface=%s alg=%s idx=%d txkey=%d)",
 856                    __func__, iface, alg, idx, txkey);
 857         if (addr)
 858                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
 859         if (key)
 860                 wpa_hexdump_key(MSG_DEBUG, "   key", key, key_len);
 861         return 0;
 862 }
 863
 864
 865 static int test_driver_set_sta_vlan(void *priv, const u8 *addr,
 866                                     const char *ifname, int vlan_id)
 867 {
 868         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " ifname=%s vlan_id=%d)",
 869                    __func__, MAC2STR(addr), ifname, vlan_id);
 870         return 0;
 871 }
 872
 873
 874 static int test_driver_sta_add(const char *ifname, void *priv, const u8 *addr,
 875                                u16 aid, u16 capability, u8 *supp_rates,
 876                                size_t supp_rates_len, int flags)
 877 {
 878         struct test_driver_data *drv = priv;
 879         struct test_client_socket *cli;
 880         struct test_driver_bss *bss;
 881
 882         wpa_printf(MSG_DEBUG, "%s(ifname=%s addr=" MACSTR " aid=%d "
 883                    "capability=0x%x flags=0x%x",
 884                    __func__, ifname, MAC2STR(addr), aid, capability, flags);
 885         wpa_hexdump(MSG_DEBUG, "test_driver_sta_add - supp_rates",
 886                     supp_rates, supp_rates_len);
 887
 888         cli = drv->cli;
 889         while (cli) {
 890                 if (memcmp(cli->addr, addr, ETH_ALEN) == 0)
 891                         break;
 892                 cli = cli->next;
 893         }
 894         if (!cli) {
 895                 wpa_printf(MSG_DEBUG, "%s: no matching client entry",
 896                            __func__);
 897                 return -1;
 898         }
 899
 900         for (bss = drv->bss; bss; bss = bss->next) {
 901                 if (strcmp(ifname, bss->ifname) == 0)
 902                         break;
 903         }
 904         if (bss == NULL) {
 905                 wpa_printf(MSG_DEBUG, "%s: No matching interface found from "
 906                            "configured BSSes", __func__);
 907                 return -1;
 908         }
 909
 910         cli->bss = bss;
 911
 912         return 0;
 913 }
 914
 915
 916 static int test_driver_init(struct hostapd_data *hapd)
 917 {
 918         struct test_driver_data *drv;
 919         struct sockaddr_un addr;
 920
 921         drv = wpa_zalloc(sizeof(struct test_driver_data));
 922         if (drv == NULL) {
 923                 printf("Could not allocate memory for test driver data\n");
 924                 return -1;
 925         }
 926         drv->bss = wpa_zalloc(sizeof(*drv->bss));
 927         if (drv->bss == NULL) {
 928                 printf("Could not allocate memory for test driver BSS data\n");
 929                 free(drv);
 930                 return -1;
 931         }
 932
 933         drv->ops = test_driver_ops;
 934         drv->hapd = hapd;
 935
 936         /* Generate a MAC address to help testing with multiple APs */
 937         hapd->own_addr[0] = 0x02; /* locally administered */
 938         sha1_prf((const u8 *) hapd->conf->iface, strlen(hapd->conf->iface),
 939                  "hostapd test bssid generation",
 940                  (const u8 *) hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len,
 941                  hapd->own_addr + 1, ETH_ALEN - 1);
 942
 943         strncpy(drv->bss->ifname, hapd->conf->iface, IFNAMSIZ);
 944         memcpy(drv->bss->bssid, hapd->own_addr, ETH_ALEN);
 945
 946         if (hapd->conf->test_socket) {
 947                 if (strlen(hapd->conf->test_socket) >= sizeof(addr.sun_path)) {
 948                         printf("Too long test_socket path\n");
 949                         test_driver_free_priv(drv);
 950                         return -1;
 951                 }
 952                 if (strncmp(hapd->conf->test_socket, "DIR:", 4) == 0) {
 953                         size_t len = strlen(hapd->conf->test_socket) + 30;
 954                         drv->socket_dir = strdup(hapd->conf->test_socket + 4);
 955                         drv->own_socket_path = malloc(len);
 956                         if (drv->own_socket_path) {
 957                                 snprintf(drv->own_socket_path, len,
 958                                          "%s/AP-" MACSTR,
 959                                          hapd->conf->test_socket + 4,
 960                                          MAC2STR(hapd->own_addr));
 961                         }
 962                 } else {
 963                         drv->own_socket_path = strdup(hapd->conf->test_socket);
 964                 }
 965                 if (drv->own_socket_path == NULL) {
 966                         test_driver_free_priv(drv);
 967                         return -1;
 968                 }
 969
 970                 drv->test_socket = socket(PF_UNIX, SOCK_DGRAM, 0);
 971                 if (drv->test_socket < 0) {
 972                         perror("socket(PF_UNIX)");
 973                         test_driver_free_priv(drv);
 974                         return -1;
 975                 }
 976
 977                 memset(&addr, 0, sizeof(addr));
 978                 addr.sun_family = AF_UNIX;
 979                 strncpy(addr.sun_path, drv->own_socket_path,
 980                         sizeof(addr.sun_path));
 981                 if (bind(drv->test_socket, (struct sockaddr *) &addr,
 982                          sizeof(addr)) < 0) {
 983                         perror("bind(PF_UNIX)");
 984                         close(drv->test_socket);
 985                         unlink(drv->own_socket_path);
 986                         test_driver_free_priv(drv);
 987                         return -1;
 988                 }
 989                 eloop_register_read_sock(drv->test_socket,
 990                                          test_driver_receive_unix, drv, NULL);
 991         } else
 992                 drv->test_socket = -1;
 993
 994         hapd->driver = &drv->ops;
 995         return 0;
 996 }
 997
 998
 999 static void test_driver_deinit(void *priv)
1000 {
1001         struct test_driver_data *drv = priv;
1002         struct test_client_socket *cli, *prev;
1003
1004         cli = drv->cli;
1005         while (cli) {
1006                 prev = cli;
1007                 cli = cli->next;
1008                 free(prev);
1009         }
1010
1011         if (drv->test_socket >= 0) {
1012                 eloop_unregister_read_sock(drv->test_socket);
1013                 close(drv->test_socket);
1014                 unlink(drv->own_socket_path);
1015         }
1016
1017         drv->hapd->driver = NULL;
1018
1019         /* There should be only one BSS remaining at this point. */
1020         if (drv->bss == NULL)
1021                 wpa_printf(MSG_ERROR, "%s: drv->bss == NULL", __func__);
1022         else if (drv->bss->next)
1023                 wpa_printf(MSG_ERROR, "%s: drv->bss->next != NULL", __func__);
1024
1025         test_driver_free_priv(drv);
1026 }
1027
1028
1029 static const struct driver_ops test_driver_ops = {
1030         .name = "test",
1031         .init = test_driver_init,
1032         .deinit = test_driver_deinit,
1033         .send_eapol = test_driver_send_eapol,
1034         .send_mgmt_frame = test_driver_send_mgmt_frame,
1035         .set_generic_elem = test_driver_set_generic_elem,
1036         .sta_deauth = test_driver_sta_deauth,
1037         .sta_disassoc = test_driver_sta_disassoc,
1038         .get_hw_feature_data = test_driver_get_hw_feature_data,
1039         .bss_add = test_driver_bss_add,
1040         .bss_remove = test_driver_bss_remove,
1041         .if_add = test_driver_if_add,
1042         .if_update = test_driver_if_update,
1043         .if_remove = test_driver_if_remove,
1044         .valid_bss_mask = test_driver_valid_bss_mask,
1045         .set_ssid = test_driver_set_ssid,
1046         .set_privacy = test_driver_set_privacy,
1047         .set_encryption = test_driver_set_encryption,
1048         .set_sta_vlan = test_driver_set_sta_vlan,
1049         .sta_add = test_driver_sta_add,
1050 };
1051
1052
1053 void test_driver_register(void)
1054 {
1055         driver_register(test_driver_ops.name, &test_driver_ops);
1056 }