src/main/radclient.c

   1 /*
   2  * radclient.c  General radius packet debug tool.
   3  *
   4  * Version:     $Id$
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * Copyright 2000  The FreeRADIUS server project
  21  * Copyright 2000  Miquel van Smoorenburg <miquels@cistron.nl>
  22  * Copyright 2000  Alan DeKok <aland@ox.org>
  23  */
  24 static const char rcsid[] = "$Id$";
  25
  26 #include <freeradius-devel/autoconf.h>
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30
  31 #ifdef HAVE_UNISTD_H
  32 #       include <unistd.h>
  33 #endif
  34
  35 #include <string.h>
  36 #include <ctype.h>
  37 #include <netdb.h>
  38
  39 #ifdef HAVE_SYS_SELECT_H
  40 #       include <sys/select.h>
  41 #endif
  42
  43 #ifdef HAVE_GETOPT_H
  44 #       include <getopt.h>
  45 #endif
  46
  47 #include <assert.h>
  48
  49 #include <freeradius-devel/conf.h>
  50 #include <freeradius-devel/radpaths.h>
  51 #include <freeradius-devel/missing.h>
  52 #include <freeradius-devel/libradius.h>
  53
  54 static int retries = 10;
  55 static float timeout = 3;
  56 static const char *secret = NULL;
  57 static int do_output = 1;
  58 static int totalapp = 0;
  59 static int totaldeny = 0;
  60 static int totallost = 0;
  61
  62 static int server_port = 0;
  63 static int packet_code = 0;
  64 static lrad_ipaddr_t server_ipaddr;
  65 static int resend_count = 1;
  66 static int done = 1;
  67
  68 static lrad_ipaddr_t client_ipaddr;
  69 static int client_port = 0;
  70
  71 static int sockfd;
  72 static int last_used_id = -1;
  73
  74 static rbtree_t *filename_tree = NULL;
  75 static lrad_packet_list_t *pl = NULL;
  76
  77 static int sleep_time = -1;
  78
  79 typedef struct radclient_t {
  80         struct          radclient_t *prev;
  81         struct          radclient_t *next;
  82
  83         const char      *filename;
  84         int             packet_number; /* in the file */
  85         char            password[256];
  86         time_t          timestamp;
  87         RADIUS_PACKET   *request;
  88         RADIUS_PACKET   *reply;
  89         int             resend;
  90         int             tries;
  91         int             done;
  92 } radclient_t;
  93
  94 static radclient_t *radclient_head = NULL;
  95 static radclient_t *radclient_tail = NULL;
  96
  97
  98 static void NEVER_RETURNS usage(void)
  99 {
 100         fprintf(stderr, "Usage: radclient [options] server[:port] <command> [<secret>]\n");
 101
 102         fprintf(stderr, "  <command>    One of auth, acct, status, coa, or disconnect.\n");
 103         fprintf(stderr, "  -c count    Send each packet 'count' times.\n");
 104         fprintf(stderr, "  -d raddb    Set dictionary directory.\n");
 105         fprintf(stderr, "  -f file     Read packets from file, not stdin.\n");
 106         fprintf(stderr, "  -i id       Set request id to 'id'.  Values may be 0..255\n");
 107         fprintf(stderr, "  -n num      Send N requests/s\n");
 108         fprintf(stderr, "  -p num      Send 'num' packets from a file in parallel.\n");
 109         fprintf(stderr, "  -q          Do not print anything out.\n");
 110         fprintf(stderr, "  -r retries  If timeout, retry sending the packet 'retries' times.\n");
 111         fprintf(stderr, "  -s          Print out summary information of auth results.\n");
 112         fprintf(stderr, "  -S file     read secret from file, not command line.\n");
 113         fprintf(stderr, "  -t timeout  Wait 'timeout' seconds before retrying (may be a floating point number).\n");
 114         fprintf(stderr, "  -v          Show program version information.\n");
 115         fprintf(stderr, "  -x          Debugging mode.\n");
 116         fprintf(stderr, "  -4          Use IPv4 address of server\n");
 117         fprintf(stderr, "  -6          Use IPv6 address of server.\n");
 118
 119         exit(1);
 120 }
 121
 122 /*
 123  *      Free a radclient struct, which may (or may not)
 124  *      already be in the list.
 125  */
 126 static void radclient_free(radclient_t *radclient)
 127 {
 128         radclient_t *prev, *next;
 129
 130         if (radclient->request) rad_free(&radclient->request);
 131         if (radclient->reply) rad_free(&radclient->reply);
 132
 133         prev = radclient->prev;
 134         next = radclient->next;
 135
 136         if (prev) {
 137                 assert(radclient_head != radclient);
 138                 prev->next = next;
 139         } else if (radclient_head) {
 140                 assert(radclient_head == radclient);
 141                 radclient_head = next;
 142         }
 143
 144         if (next) {
 145                 assert(radclient_tail != radclient);
 146                 next->prev = prev;
 147         } else if (radclient_tail) {
 148                 assert(radclient_tail == radclient);
 149                 radclient_tail = prev;
 150         }
 151
 152         free(radclient);
 153 }
 154
 155 /*
 156  *      Initialize a radclient data structure
 157  */
 158 static radclient_t *radclient_init(const char *filename)
 159 {
 160         FILE *fp;
 161         VALUE_PAIR *vp;
 162         radclient_t *start, *radclient, *prev = NULL;
 163         int filedone = 0;
 164         int packet_number = 1;
 165
 166         start = NULL;
 167         assert(filename != NULL);
 168
 169         /*
 170          *      Determine where to read the VP's from.
 171          */
 172         if (strcmp(filename, "-") != 0) {
 173                 fp = fopen(filename, "r");
 174                 if (!fp) {
 175                         fprintf(stderr, "radclient: Error opening %s: %s\n",
 176                                 filename, strerror(errno));
 177                         return NULL;
 178                 }
 179         } else {
 180                 fp = stdin;
 181         }
 182
 183         /*
 184          *      Loop until the file is done.
 185          */
 186         do {
 187                 /*
 188                  *      Allocate it.
 189                  */
 190                 radclient = malloc(sizeof(*radclient));
 191                 if (!radclient) {
 192                         perror("radclient: X");
 193                         return NULL; /* memory leak "start" */
 194                 }
 195                 memset(radclient, 0, sizeof(*radclient));
 196
 197                 radclient->request = rad_alloc(1);
 198                 if (!radclient->request) {
 199                         librad_perror("radclient: Y");
 200                         radclient_free(radclient);
 201                         return NULL; /* memory leak "start" */
 202                 }
 203
 204                 radclient->filename = filename;
 205                 radclient->request->id = -1; /* allocate when sending */
 206                 radclient->packet_number = packet_number++;
 207
 208                 /*
 209                  *      Read the VP's.
 210                  */
 211                 radclient->request->vps = readvp2(fp, &filedone, "radclient:");
 212                 if (!radclient->request->vps) {
 213                         radclient_free(radclient);
 214                         return start; /* done: return the list */
 215                 }
 216
 217                 /*
 218                  *      Keep a copy of the the User-Password attribute.
 219                  */
 220                 if ((vp = pairfind(radclient->request->vps, PW_PASSWORD)) != NULL) {
 221                         strNcpy(radclient->password, vp->vp_strvalue,
 222                                 sizeof(radclient->password));
 223                         /*
 224                          *      Otherwise keep a copy of the CHAP-Password attribute.
 225                          */
 226                 } else if ((vp = pairfind(radclient->request->vps, PW_CHAP_PASSWORD)) != NULL) {
 227                         strNcpy(radclient->password, vp->vp_strvalue,
 228                                 sizeof(radclient->password));
 229                 } else {
 230                         radclient->password[0] = '\0';
 231                 }
 232
 233                 /*
 234                  *  Fix up Digest-Attributes issues
 235                  */
 236                 for (vp = radclient->request->vps; vp != NULL; vp = vp->next) {
 237                         switch (vp->attribute) {
 238                         default:
 239                                 break;
 240
 241                                 /*
 242                                  *      Allow it to set the packet type in
 243                                  *      the attributes read from the file.
 244                                  */
 245                         case PW_PACKET_TYPE:
 246                                 radclient->request->code = vp->lvalue;
 247                                 break;
 248
 249                         case PW_PACKET_DST_PORT:
 250                                 radclient->request->dst_port = (vp->lvalue & 0xffff);
 251                                 break;
 252
 253                         case PW_PACKET_DST_IP_ADDRESS:
 254                                 radclient->request->dst_ipaddr.af = AF_INET;
 255                                 radclient->request->dst_ipaddr.ipaddr.ip4addr.s_addr = vp->lvalue;
 256                                 break;
 257
 258                         case PW_PACKET_DST_IPV6_ADDRESS:
 259                                 radclient->request->dst_ipaddr.af = AF_INET6;
 260                                 radclient->request->dst_ipaddr.ipaddr.ip6addr = vp->vp_ipv6addr;
 261                                 break;
 262
 263                         case PW_PACKET_SRC_PORT:
 264                                 radclient->request->src_port = (vp->lvalue & 0xffff);
 265                                 break;
 266
 267                         case PW_PACKET_SRC_IP_ADDRESS:
 268                                 radclient->request->src_ipaddr.af = AF_INET;
 269                                 radclient->request->src_ipaddr.ipaddr.ip4addr.s_addr = vp->lvalue;
 270                                 break;
 271
 272                         case PW_PACKET_SRC_IPV6_ADDRESS:
 273                                 radclient->request->src_ipaddr.af = AF_INET6;
 274                                 radclient->request->src_ipaddr.ipaddr.ip6addr = vp->vp_ipv6addr;
 275                                 break;
 276
 277                         case PW_DIGEST_REALM:
 278                         case PW_DIGEST_NONCE:
 279                         case PW_DIGEST_METHOD:
 280                         case PW_DIGEST_URI:
 281                         case PW_DIGEST_QOP:
 282                         case PW_DIGEST_ALGORITHM:
 283                         case PW_DIGEST_BODY_DIGEST:
 284                         case PW_DIGEST_CNONCE:
 285                         case PW_DIGEST_NONCE_COUNT:
 286                         case PW_DIGEST_USER_NAME:
 287                                 /* overlapping! */
 288                                 memmove(&vp->vp_octets[2], &vp->vp_octets[0],
 289                                         vp->length);
 290                                 vp->vp_octets[0] = vp->attribute - PW_DIGEST_REALM + 1;
 291                                 vp->length += 2;
 292                                 vp->vp_octets[1] = vp->length;
 293                                 vp->attribute = PW_DIGEST_ATTRIBUTES;
 294                                 break;
 295                         }
 296                 } /* loop over the VP's we read in */
 297
 298                 if (!start) {
 299                         start = radclient;
 300                         prev = start;
 301                 } else {
 302                         prev->next = radclient;
 303                         radclient->prev = prev;
 304                         prev = radclient;
 305                 }
 306         } while (!filedone); /* loop until the file is done. */
 307
 308         if (fp != stdin) fclose(fp);
 309
 310         /*
 311          *      And we're done.
 312          */
 313         return start;
 314 }
 315
 316
 317 /*
 318  *      Sanity check each argument.
 319  */
 320 static int radclient_sane(radclient_t *radclient)
 321 {
 322         if (radclient->request->dst_port == 0) {
 323                 radclient->request->dst_port = server_port;
 324         }
 325         if (radclient->request->dst_ipaddr.af == AF_UNSPEC) {
 326                 if (server_ipaddr.af == AF_UNSPEC) {
 327                         fprintf(stderr, "radclient: No server was given, but request %d in file %s did not contain Packet-Dst-IP-Address\n",
 328                                 radclient->packet_number, radclient->filename);
 329                         return -1;
 330                 }
 331                 radclient->request->dst_ipaddr = server_ipaddr;
 332         }
 333         if (radclient->request->code == 0) {
 334                 if (packet_code == -1) {
 335                         fprintf(stderr, "radclient: Request was \"auto\", but request %d in file %s did not contain Packet-Type\n",
 336                                 radclient->packet_number, radclient->filename);
 337                         return -1;
 338                 }
 339
 340                 radclient->request->code = packet_code;
 341         }
 342         radclient->request->sockfd = -1;
 343
 344         return 0;
 345 }
 346
 347
 348 /*
 349  *      For request handline.
 350  */
 351 static int filename_cmp(const void *one, const void *two)
 352 {
 353         return strcmp((const char *) one, (const char *) two);
 354 }
 355
 356 static int filename_walk(void *context, void *data)
 357 {
 358         const char      *filename = data;
 359         radclient_t     *radclient;
 360
 361         context = context;      /* -Wunused */
 362
 363         /*
 364          *      Initialize the request we're about
 365          *      to send.
 366          */
 367         radclient = radclient_init(filename);
 368         if (!radclient) {
 369                 exit(1);
 370         }
 371
 372         if (!radclient_head) {
 373                 assert(radclient_tail == NULL);
 374                 radclient_head = radclient;
 375         } else {
 376                 assert(radclient_tail->next == NULL);
 377                 radclient_tail->next = radclient;
 378                 radclient->prev = radclient_tail;
 379         }
 380
 381         /*
 382          *      We may have had a list of "radclient" structures
 383          *      returned to us.
 384          */
 385         while (radclient->next) radclient = radclient->next;
 386         radclient_tail = radclient;
 387
 388         return 0;
 389 }
 390
 391
 392 /*
 393  *      Deallocate packet ID, etc.
 394  */
 395 static void deallocate_id(radclient_t *radclient)
 396 {
 397         if (!radclient || !radclient->request ||
 398             (radclient->request->id < 0)) {
 399                 return;
 400         }
 401
 402         /*
 403          *      One more unused RADIUS ID.
 404          */
 405         lrad_packet_list_id_free(pl, radclient->request);
 406         radclient->request->id = -1;
 407
 408         /*
 409          *      If we've already sent a packet, free up the old one,
 410          *      and ensure that the next packet has a unique
 411          *      authentication vector.
 412          */
 413         if (radclient->request->data) {
 414                 free(radclient->request->data);
 415                 radclient->request->data = NULL;
 416         }
 417
 418         if (radclient->reply) rad_free(&radclient->reply);
 419 }
 420
 421
 422 static void print_hex(RADIUS_PACKET *packet)
 423 {
 424         int i;
 425
 426         if (!packet->data) return;
 427
 428         printf("  Code:\t\t%u\n", packet->data[0]);
 429         printf("  Id:\t\t%u\n", packet->data[1]);
 430         printf("  Length:\t%u\n", ((packet->data[2] << 8) |
 431                                    (packet->data[3])));
 432         printf("  Vector:\t");
 433         for (i = 4; i < 20; i++) {
 434                 printf("%02x", packet->data[i]);
 435         }
 436         printf("\n");
 437
 438         if (packet->data_len > 20) {
 439                 int total;
 440                 const uint8_t *ptr;
 441                 printf("  Data:");
 442
 443                 total = packet->data_len - 20;
 444                 ptr = packet->data + 20;
 445
 446                 while (total > 0) {
 447                         int attrlen;
 448
 449                         printf("\t\t");
 450                         if (total < 2) { /* too short */
 451                                 printf("%02x\n", *ptr);
 452                                 break;
 453                         }
 454
 455                         if (ptr[1] > total) { /* too long */
 456                                 for (i = 0; i < total; i++) {
 457                                         printf("%02x ", ptr[i]);
 458                                 }
 459                                 break;
 460                         }
 461
 462                         printf("%02x  %02x  ", ptr[0], ptr[1]);
 463                         attrlen = ptr[1] - 2;
 464                         ptr += 2;
 465                         total -= 2;
 466
 467                         for (i = 0; i < attrlen; i++) {
 468                                 if ((i > 0) && ((i & 0x0f) == 0x00))
 469                                         printf("\t\t\t");
 470                                 printf("%02x ", ptr[i]);
 471                                 if ((i & 0x0f) == 0x0f) printf("\n");
 472                         }
 473
 474                         if ((attrlen & 0x0f) != 0x00) printf("\n");
 475
 476                         ptr += attrlen;
 477                         total -= attrlen;
 478                 }
 479         }
 480         fflush(stdout);
 481 }
 482
 483 /*
 484  *      Send one packet.
 485  */
 486 static int send_one_packet(radclient_t *radclient)
 487 {
 488         assert(radclient->done == 0);
 489
 490         /*
 491          *      Remember when we have to wake up, to re-send the
 492          *      request, of we didn't receive a response.
 493          */
 494         if ((sleep_time == -1) ||
 495             (sleep_time > (int) timeout)) {
 496                 sleep_time = (int) timeout;
 497         }
 498
 499         /*
 500          *      Haven't sent the packet yet.  Initialize it.
 501          */
 502         if (radclient->request->id == -1) {
 503                 int i, rcode;
 504
 505                 assert(radclient->reply == NULL);
 506
 507                 /*
 508                  *      Didn't find a free packet ID, we're not done,
 509                  *      we don't sleep, and we stop trying to process
 510                  *      this packet.
 511                  */
 512         retry:
 513                 rcode = lrad_packet_list_id_alloc(pl, radclient->request);
 514                 if (rcode < 0) {
 515                         int mysockfd;
 516
 517                         mysockfd = lrad_socket(&client_ipaddr, 0);
 518                         if (!mysockfd) {
 519                                 fprintf(stderr, "radclient: Can't open new socket\n");
 520                                 exit(1);
 521                         }
 522                         if (!lrad_packet_list_socket_add(pl, mysockfd)) {
 523                                 fprintf(stderr, "radclient: Can't add new socket\n");
 524                                 exit(1);
 525                         }
 526                         goto retry;
 527                 }
 528
 529                 if (rcode == 0) {
 530                         done = 0;
 531                         sleep_time = 0;
 532                         return 0;
 533                 }
 534
 535                 assert(radclient->request->id != -1);
 536                 assert(radclient->request->data == NULL);
 537
 538                 for (i = 0; i < 4; i++) {
 539                         *((uint32_t *) radclient->request->vector) = lrad_rand();
 540                 }
 541
 542                 /*
 543                  *      Update the password, so it can be encrypted with the
 544                  *      new authentication vector.
 545                  */
 546                 if (radclient->password[0] != '\0') {
 547                         VALUE_PAIR *vp;
 548
 549                         if ((vp = pairfind(radclient->request->vps, PW_PASSWORD)) != NULL) {
 550                                 strNcpy(vp->vp_strvalue, radclient->password,
 551                                         sizeof(vp->vp_strvalue));
 552                                 vp->length = strlen(vp->vp_strvalue);
 553
 554                         } else if ((vp = pairfind(radclient->request->vps, PW_CHAP_PASSWORD)) != NULL) {
 555                           /*
 556                            *    FIXME: AND there's no CHAP-Challenge,
 557                            *           AND vp->length != 17
 558                            *           AND rad_chap_encode() != vp->vp_octets
 559                            */
 560                                 strNcpy(vp->vp_strvalue, radclient->password,
 561                                         sizeof(vp->vp_strvalue));
 562                                 vp->length = strlen(vp->vp_strvalue);
 563
 564                                 rad_chap_encode(radclient->request,
 565                                                 vp->vp_octets,
 566                                                 radclient->request->id, vp);
 567                                 vp->length = 17;
 568                         }
 569                 }
 570
 571                 radclient->timestamp = time(NULL);
 572                 radclient->tries = 1;
 573                 radclient->resend++;
 574
 575                 /*
 576                  *      Duplicate found.  Serious error!
 577                  */
 578                 if (!lrad_packet_list_insert(pl, &radclient->request)) {
 579                         assert(0 == 1);
 580                 }
 581
 582
 583         } else {                /* radclient->request->id >= 0 */
 584                 time_t now = time(NULL);
 585
 586                 /*
 587                  *      FIXME: Accounting packets are never retried!
 588                  *      The Acct-Delay-Time attribute is updated to
 589                  *      reflect the delay, and the packet is re-sent
 590                  *      from scratch!
 591                  */
 592
 593                 /*
 594                  *      Not time for a retry, do so.
 595                  */
 596                 if ((now - radclient->timestamp) < timeout) {
 597                         /*
 598                          *      When we walk over the tree sending
 599                          *      packets, we update the minimum time
 600                          *      required to sleep.
 601                          */
 602                         if ((sleep_time == -1) ||
 603                             (sleep_time > (now - radclient->timestamp))) {
 604                                 sleep_time = now - radclient->timestamp;
 605                         }
 606                         return 0;
 607                 }
 608
 609                 /*
 610                  *      We're not trying later, maybe the packet is done.
 611                  */
 612                 if (radclient->tries == retries) {
 613                         assert(radclient->request->id >= 0);
 614
 615                         /*
 616                          *      Delete the request from the tree of
 617                          *      outstanding requests.
 618                          */
 619                         lrad_packet_list_yank(pl, radclient->request);
 620
 621                         fprintf(stderr, "radclient: no response from server for ID %d socket %d\n", radclient->request->id, radclient->request->sockfd);
 622                         deallocate_id(radclient);
 623
 624                         /*
 625                          *      Normally we mark it "done" when we've received
 626                          *      the response, but this is a special case.
 627                          */
 628                         if (radclient->resend == resend_count) {
 629                                 radclient->done = 1;
 630                         }
 631                         totallost++;
 632                         return -1;
 633                 }
 634
 635                 /*
 636                  *      We are trying later.
 637                  */
 638                 radclient->timestamp = now;
 639                 radclient->tries++;
 640         }
 641
 642
 643         /*
 644          *      Send the packet.
 645          */
 646         if (rad_send(radclient->request, NULL, secret) < 0) {
 647                 fprintf(stderr, "radclient: Failed to send packet for ID %d: %s\n",
 648                         radclient->request->id, librad_errstr);
 649         }
 650
 651         if (librad_debug > 2) print_hex(radclient->request);
 652
 653         return 0;
 654 }
 655
 656 /*
 657  *      Receive one packet, maybe.
 658  */
 659 static int recv_one_packet(int wait_time)
 660 {
 661         fd_set          set;
 662         struct timeval  tv;
 663         radclient_t     *radclient;
 664         RADIUS_PACKET   *reply, **request_p;
 665         volatile int max_fd;
 666
 667         /* And wait for reply, timing out as necessary */
 668         FD_ZERO(&set);
 669
 670         max_fd = lrad_packet_list_fd_set(pl, &set);
 671         if (max_fd < 0) exit(1); /* no sockets to listen on! */
 672
 673         if (wait_time <= 0) {
 674                 tv.tv_sec = 0;
 675         } else {
 676                 tv.tv_sec = wait_time;
 677         }
 678         tv.tv_usec = 0;
 679
 680         /*
 681          *      No packet was received.
 682          */
 683         if (select(max_fd, &set, NULL, NULL, &tv) <= 0) {
 684                 return 0;
 685         }
 686
 687         /*
 688          *      Look for the packet.
 689          */
 690         reply = lrad_packet_list_recv(pl, &set);
 691         if (!reply) {
 692                 fprintf(stderr, "radclient: received bad packet: %s\n",
 693                         librad_errstr);
 694                 return -1;      /* bad packet */
 695         }
 696
 697         if (librad_debug > 2) print_hex(reply);
 698
 699         request_p = lrad_packet_list_find_byreply(pl, reply);
 700         if (!request_p) {
 701                 fprintf(stderr, "radclient: received response to request we did not send. (id=%d socket %d)\n", reply->id, reply->sockfd);
 702                 rad_free(&reply);
 703                 return -1;      /* got reply to packet we didn't send */
 704         }
 705         radclient = lrad_packet2myptr(radclient_t, request, request_p);
 706         lrad_packet_list_yank(pl, radclient->request);
 707         deallocate_id(radclient);
 708         radclient->reply = reply;
 709
 710         /*
 711          *      Fails the signature validation: not a real reply.
 712          *      FIXME: Silently drop it and listen for another packet.
 713          */
 714         if (rad_verify(reply, radclient->request, secret) < 0) {
 715                 librad_perror("rad_verify");
 716                 totallost++;
 717                 goto packet_done; /* shared secret is incorrect */
 718         }
 719
 720         /*
 721          *      If this fails, we're out of memory.
 722          */
 723         if (rad_decode(reply, radclient->request, secret) != 0) {
 724                 librad_perror("rad_decode");
 725                 totallost++;
 726                 goto packet_done;
 727         }
 728
 729         /* libradius debug already prints out the value pairs for us */
 730         if (!librad_debug && do_output) {
 731                 printf("Received response ID %d, code %d, length = %d\n",
 732                        reply->id, reply->code, reply->data_len);
 733                 vp_printlist(stdout, reply->vps);
 734         }
 735         if (reply->code != PW_AUTHENTICATION_REJECT) {
 736                 totalapp++;
 737         } else {
 738                 totaldeny++;
 739         }
 740
 741 packet_done:
 742         rad_free(&radclient->reply);
 743
 744         /*
 745          *      Once we've sent the packet as many times as requested,
 746          *      mark it done.
 747          */
 748         if (radclient->resend == resend_count) {
 749                 assert(lrad_packet_list_find(pl, radclient->request) == NULL);
 750                 radclient->done = 1;
 751         }
 752
 753         return 0;
 754 }
 755
 756
 757 static int getport(const char *name)
 758 {
 759         struct  servent         *svp;
 760
 761         svp = getservbyname (name, "udp");
 762         if (!svp) {
 763                 return 0;
 764         }
 765
 766         return ntohs(svp->s_port);
 767 }
 768
 769 int main(int argc, char **argv)
 770 {
 771         char *p;
 772         int c;
 773         const char *radius_dir = RADDBDIR;
 774         char filesecret[256];
 775         FILE *fp;
 776         int do_summary = 0;
 777         int persec = 0;
 778         int parallel = 1;
 779         radclient_t     *this;
 780         int force_af = AF_UNSPEC;
 781
 782         librad_debug = 0;
 783
 784         filename_tree = rbtree_create(filename_cmp, NULL, 0);
 785         if (!filename_tree) {
 786                 fprintf(stderr, "radclient: Out of memory\n");
 787                 exit(1);
 788         }
 789
 790         while ((c = getopt(argc, argv, "46c:d:f:hi:n:p:qr:sS:t:vx")) != EOF) switch(c) {
 791                 case '4':
 792                         force_af = AF_INET;
 793                         break;
 794                 case '6':
 795                         force_af = AF_INET6;
 796                         break;
 797                 case 'c':
 798                         if (!isdigit((int) *optarg))
 799                                 usage();
 800                         resend_count = atoi(optarg);
 801                         break;
 802                 case 'd':
 803                         radius_dir = optarg;
 804                         break;
 805                 case 'f':
 806                         rbtree_insert(filename_tree, optarg);
 807                         break;
 808                 case 'i':       /* currently broken */
 809                         if (!isdigit((int) *optarg))
 810                                 usage();
 811                         last_used_id = atoi(optarg);
 812                         if ((last_used_id < 0) || (last_used_id > 255)) {
 813                                 usage();
 814                         }
 815                         break;
 816
 817                 case 'n':
 818                         persec = atoi(optarg);
 819                         if (persec <= 0) usage();
 820                         break;
 821
 822                         /*
 823                          *      Note that sending MANY requests in
 824                          *      parallel can over-run the kernel
 825                          *      queues, and Linux will happily discard
 826                          *      packets.  So even if the server responds,
 827                          *      the client may not see the response.
 828                          */
 829                 case 'p':
 830                         parallel = atoi(optarg);
 831                         if (parallel <= 0) usage();
 832                         break;
 833
 834                 case 'q':
 835                         do_output = 0;
 836                         break;
 837                 case 'r':
 838                         if (!isdigit((int) *optarg))
 839                                 usage();
 840                         retries = atoi(optarg);
 841                         if ((retries == 0) || (retries > 1000)) usage();
 842                         break;
 843                 case 's':
 844                         do_summary = 1;
 845                         break;
 846                case 'S':
 847                        fp = fopen(optarg, "r");
 848                        if (!fp) {
 849                                fprintf(stderr, "radclient: Error opening %s: %s\n",
 850                                        optarg, strerror(errno));
 851                                exit(1);
 852                        }
 853                        if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
 854                                fprintf(stderr, "radclient: Error reading %s: %s\n",
 855                                        optarg, strerror(errno));
 856                                exit(1);
 857                        }
 858                        fclose(fp);
 859
 860                        /* truncate newline */
 861                        p = filesecret + strlen(filesecret) - 1;
 862                        while ((p >= filesecret) &&
 863                               (*p < ' ')) {
 864                                *p = '\0';
 865                                --p;
 866                        }
 867
 868                        if (strlen(filesecret) < 2) {
 869                                fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
 870                                exit(1);
 871                        }
 872                        secret = filesecret;
 873                        break;
 874                 case 't':
 875                         if (!isdigit((int) *optarg))
 876                                 usage();
 877                         timeout = atof(optarg);
 878                         break;
 879                 case 'v':
 880                         printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
 881                         exit(0);
 882                         break;
 883                 case 'x':
 884                         librad_debug++;
 885                         break;
 886                 case 'h':
 887                 default:
 888                         usage();
 889                         break;
 890         }
 891         argc -= (optind - 1);
 892         argv += (optind - 1);
 893
 894         if ((argc < 3)  ||
 895             ((secret == NULL) && (argc < 4))) {
 896                 usage();
 897         }
 898
 899         if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
 900                 librad_perror("radclient");
 901                 return 1;
 902         }
 903
 904         /*
 905          *      Resolve hostname.
 906          */
 907         server_ipaddr.af = force_af;
 908         if (strcmp(argv[1], "-") != 0) {
 909                 const char *hostname = argv[1];
 910                 const char *portname = argv[1];
 911                 char buffer[256];
 912
 913                 if (*argv[1] == '[') { /* IPv6 URL encoded */
 914                         p = strchr(argv[1], ']');
 915                         if ((p - argv[1]) >= sizeof(buffer)) {
 916                                 usage();
 917                         }
 918
 919                         memcpy(buffer, argv[1] + 1, p - argv[1] - 1);
 920                         buffer[p - argv[1] - 1] = '\0';
 921
 922                         hostname = buffer;
 923                         portname = p + 1;
 924
 925                 }
 926                 p = strchr(portname, ':');
 927                 if (p && (strchr(p + 1, ':') == NULL)) {
 928                         *p = '\0';
 929                         portname = p + 1;
 930                 } else {
 931                         portname = NULL;
 932                 }
 933
 934                 if (ip_hton(hostname, force_af, &server_ipaddr) < 0) {
 935                         fprintf(stderr, "radclient: Failed to find IP address for host %s: %s\n", hostname, strerror(errno));
 936                         exit(1);
 937                 }
 938
 939                 /*
 940                  *      Strip port from hostname if needed.
 941                  */
 942                 if (portname) server_port = atoi(portname);
 943         }
 944
 945         /*
 946          *      See what kind of request we want to send.
 947          */
 948         if (strcmp(argv[2], "auth") == 0) {
 949                 if (server_port == 0) server_port = getport("radius");
 950                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 951                 packet_code = PW_AUTHENTICATION_REQUEST;
 952
 953         } else if (strcmp(argv[2], "challenge") == 0) {
 954                 if (server_port == 0) server_port = getport("radius");
 955                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 956                 packet_code = PW_ACCESS_CHALLENGE;
 957
 958         } else if (strcmp(argv[2], "acct") == 0) {
 959                 if (server_port == 0) server_port = getport("radacct");
 960                 if (server_port == 0) server_port = PW_ACCT_UDP_PORT;
 961                 packet_code = PW_ACCOUNTING_REQUEST;
 962                 do_summary = 0;
 963
 964         } else if (strcmp(argv[2], "status") == 0) {
 965                 if (server_port == 0) server_port = getport("radius");
 966                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 967                 packet_code = PW_STATUS_SERVER;
 968
 969         } else if (strcmp(argv[2], "disconnect") == 0) {
 970                 if (server_port == 0) server_port = PW_POD_UDP_PORT;
 971                 packet_code = PW_DISCONNECT_REQUEST;
 972
 973         } else if (strcmp(argv[2], "coa") == 0) {
 974                 if (server_port == 0) server_port = PW_POD_UDP_PORT;
 975                 packet_code = PW_COA_REQUEST;
 976
 977         } else if (strcmp(argv[2], "auto") == 0) {
 978                 packet_code = -1;
 979
 980         } else if (isdigit((int) argv[2][0])) {
 981                 if (server_port == 0) server_port = getport("radius");
 982                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 983                 packet_code = atoi(argv[2]);
 984         } else {
 985                 usage();
 986         }
 987
 988         /*
 989          *      Add the secret.
 990          */
 991         if (argv[3]) secret = argv[3];
 992
 993         /*
 994          *      If no '-f' is specified, we're reading from stdin.
 995          */
 996         if (rbtree_num_elements(filename_tree) == 0) {
 997                 rbtree_insert(filename_tree, "-");
 998         }
 999
1000         /*
1001          *      Walk over the list of filenames, creating the requests.
1002          */
1003         if (rbtree_walk(filename_tree, InOrder, filename_walk, NULL) != 0) {
1004                 exit(1);
1005         }
1006
1007         /*
1008          *      No packets read.  Die.
1009          */
1010         if (!radclient_head) {
1011                 fprintf(stderr, "radclient: Nothing to send.\n");
1012                 exit(1);
1013         }
1014
1015         /*
1016          *      Bind to the first specified IP address and port.
1017          *      This means we ignore later ones.
1018          */
1019         if (radclient_head->request->src_ipaddr.af == AF_UNSPEC) {
1020                 memset(&client_ipaddr, 0, sizeof(client_ipaddr));
1021                 client_ipaddr.af = server_ipaddr.af;
1022                 client_port = 0;
1023         } else {
1024                 client_ipaddr = radclient_head->request->src_ipaddr;
1025                 client_port = radclient_head->request->src_port;
1026         }
1027         sockfd = lrad_socket(&client_ipaddr, client_port);
1028         if (sockfd < 0) {
1029                 fprintf(stderr, "radclient: socket: %s\n", librad_errstr);
1030                 exit(1);
1031         }
1032
1033         pl = lrad_packet_list_create(1);
1034         if (!pl) {
1035                 fprintf(stderr, "radclient: Out of memory\n");
1036                 exit(1);
1037         }
1038
1039         if (!lrad_packet_list_socket_add(pl, sockfd)) {
1040                 fprintf(stderr, "radclient: Out of memory\n");
1041                 exit(1);
1042         }
1043
1044         /*
1045          *      Walk over the list of packets, sanity checking
1046          *      everything.
1047          */
1048         for (this = radclient_head; this != NULL; this = this->next) {
1049                 this->request->src_ipaddr = client_ipaddr;
1050                 this->request->src_port = client_port;
1051                 if (radclient_sane(this) != 0) {
1052                         exit(1);
1053                 }
1054         }
1055
1056         /*
1057          *      Walk over the packets to send, until
1058          *      we're all done.
1059          *
1060          *      FIXME: This currently busy-loops until it receives
1061          *      all of the packets.  It should really have some sort of
1062          *      send packet, get time to wait, select for time, etc.
1063          *      loop.
1064          */
1065         do {
1066                 int n = parallel;
1067                 radclient_t *next;
1068                 const char *filename = NULL;
1069
1070                 done = 1;
1071                 sleep_time = -1;
1072
1073                 /*
1074                  *      Walk over the packets, sending them.
1075                  */
1076
1077                 for (this = radclient_head; this != NULL; this = next) {
1078                         next = this->next;
1079
1080                         /*
1081                          *      If there's a packet to receive,
1082                          *      receive it, but don't wait for a
1083                          *      packet.
1084                          */
1085                         recv_one_packet(0);
1086
1087                         /*
1088                          *      This packet is done.  Delete it.
1089                          */
1090                         if (this->done) {
1091                                 radclient_free(this);
1092                                 continue;
1093                         }
1094
1095                         /*
1096                          *      Packets from multiple '-f' are sent
1097                          *      in parallel.
1098                          *
1099                          *      Packets from one file are sent in
1100                          *      series, unless '-p' is specified, in
1101                          *      which case N packets from each file
1102                          *      are sent in parallel.
1103                          */
1104                         if (this->filename != filename) {
1105                                 filename = this->filename;
1106                                 n = parallel;
1107                         }
1108
1109                         if (n > 0) {
1110                                 n--;
1111
1112                                 /*
1113                                  *      Send the current packet.
1114                                  */
1115                                 send_one_packet(this);
1116
1117                                 /*
1118                                  *      Wait a little before sending
1119                                  *      the next packet, if told to.
1120                                  */
1121                                 if (persec) {
1122                                         struct timeval tv;
1123
1124                                         /*
1125                                          *      Don't sleep elsewhere.
1126                                          */
1127                                         sleep_time = 0;
1128
1129                                         if (persec == 1) {
1130                                                 tv.tv_sec = 1;
1131                                                 tv.tv_usec = 0;
1132                                         } else {
1133                                                 tv.tv_sec = 0;
1134                                                 tv.tv_usec = 1000000/persec;
1135                                         }
1136
1137                                         /*
1138                                          *      Sleep for milliseconds,
1139                                          *      portably.
1140                                          *
1141                                          *      If we get an error or
1142                                          *      a signal, treat it like
1143                                          *      a normal timeout.
1144                                          */
1145                                         select(0, NULL, NULL, NULL, &tv);
1146                                 }
1147
1148                                 /*
1149                                  *      If we haven't sent this packet
1150                                  *      often enough, we're not done,
1151                                  *      and we shouldn't sleep.
1152                                  */
1153                                 if (this->resend < resend_count) {
1154                                         done = 0;
1155                                         sleep_time = 0;
1156                                 }
1157                         } else { /* haven't sent this packet, we're not done */
1158                                 assert(this->done == 0);
1159                                 assert(this->reply == NULL);
1160                                 done = 0;
1161                         }
1162                 }
1163
1164                 /*
1165                  *      Still have outstanding requests.
1166                  */
1167                 if (lrad_packet_list_num_elements(pl) > 0) {
1168                         done = 0;
1169                 } else {
1170                         sleep_time = 0;
1171                 }
1172
1173                 /*
1174                  *      Nothing to do until we receive a request, so
1175                  *      sleep until then.  Once we receive one packet,
1176                  *      we go back, and walk through the whole list again,
1177                  *      sending more packets (if necessary), and updating
1178                  *      the sleep time.
1179                  */
1180                 if (!done && (sleep_time > 0)) {
1181                         recv_one_packet(sleep_time);
1182                 }
1183         } while (!done);
1184
1185         rbtree_free(filename_tree);
1186         lrad_packet_list_free(pl);
1187
1188         if (do_summary) {
1189                 printf("\n\t   Total approved auths:  %d\n", totalapp);
1190                 printf("\t     Total denied auths:  %d\n", totaldeny);
1191                 printf("\t       Total lost auths:  %d\n", totallost);
1192         }
1193
1194         return 0;
1195 }