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 2000,2006  The FreeRADIUS server project
  21  * Copyright 2000  Miquel van Smoorenburg <miquels@cistron.nl>
  22  * Copyright 2000  Alan DeKok <aland@ox.org>
  23  */
  24
  25 #include <freeradius-devel/ident.h>
  26 RCSID("$Id$")
  27
  28 #include <freeradius-devel/libradius.h>
  29 #include <freeradius-devel/conf.h>
  30 #include <freeradius-devel/radpaths.h>
  31
  32 #include <ctype.h>
  33
  34 #ifdef HAVE_GETOPT_H
  35 #       include <getopt.h>
  36 #endif
  37
  38 #include <assert.h>
  39
  40 static int retries = 10;
  41 static float timeout = 3;
  42 static const char *secret = NULL;
  43 static int do_output = 1;
  44 static int totalapp = 0;
  45 static int totaldeny = 0;
  46 static int totallost = 0;
  47
  48 static int server_port = 0;
  49 static int packet_code = 0;
  50 static fr_ipaddr_t server_ipaddr;
  51 static int resend_count = 1;
  52 static int done = 1;
  53 static int print_filename = 0;
  54
  55 static fr_ipaddr_t client_ipaddr;
  56 static int client_port = 0;
  57
  58 static int sockfd;
  59 static int last_used_id = -1;
  60
  61 static rbtree_t *filename_tree = NULL;
  62 static fr_packet_list_t *pl = NULL;
  63
  64 static int sleep_time = -1;
  65
  66 typedef struct radclient_t {
  67         struct          radclient_t *prev;
  68         struct          radclient_t *next;
  69
  70         const char      *filename;
  71         int             packet_number; /* in the file */
  72         char            password[256];
  73         time_t          timestamp;
  74         RADIUS_PACKET   *request;
  75         RADIUS_PACKET   *reply;
  76         int             resend;
  77         int             tries;
  78         int             done;
  79 } radclient_t;
  80
  81 static radclient_t *radclient_head = NULL;
  82 static radclient_t *radclient_tail = NULL;
  83
  84
  85 static void NEVER_RETURNS usage(void)
  86 {
  87         fprintf(stderr, "Usage: radclient [options] server[:port] <command> [<secret>]\n");
  88
  89         fprintf(stderr, "  <command>    One of auth, acct, status, coa, or disconnect.\n");
  90         fprintf(stderr, "  -c count    Send each packet 'count' times.\n");
  91         fprintf(stderr, "  -d raddb    Set dictionary directory.\n");
  92         fprintf(stderr, "  -f file     Read packets from file, not stdin.\n");
  93         fprintf(stderr, "  -i id       Set request id to 'id'.  Values may be 0..255\n");
  94         fprintf(stderr, "  -n num      Send N requests/s\n");
  95         fprintf(stderr, "  -p num      Send 'num' packets from a file in parallel.\n");
  96         fprintf(stderr, "  -q          Do not print anything out.\n");
  97         fprintf(stderr, "  -r retries  If timeout, retry sending the packet 'retries' times.\n");
  98         fprintf(stderr, "  -s          Print out summary information of auth results.\n");
  99         fprintf(stderr, "  -S file     read secret from file, not command line.\n");
 100         fprintf(stderr, "  -t timeout  Wait 'timeout' seconds before retrying (may be a floating point number).\n");
 101         fprintf(stderr, "  -v          Show program version information.\n");
 102         fprintf(stderr, "  -x          Debugging mode.\n");
 103         fprintf(stderr, "  -4          Use IPv4 address of server\n");
 104         fprintf(stderr, "  -6          Use IPv6 address of server.\n");
 105
 106         exit(1);
 107 }
 108
 109 /*
 110  *      Free a radclient struct, which may (or may not)
 111  *      already be in the list.
 112  */
 113 static void radclient_free(radclient_t *radclient)
 114 {
 115         radclient_t *prev, *next;
 116
 117         if (radclient->request) rad_free(&radclient->request);
 118         if (radclient->reply) rad_free(&radclient->reply);
 119
 120         prev = radclient->prev;
 121         next = radclient->next;
 122
 123         if (prev) {
 124                 assert(radclient_head != radclient);
 125                 prev->next = next;
 126         } else if (radclient_head) {
 127                 assert(radclient_head == radclient);
 128                 radclient_head = next;
 129         }
 130
 131         if (next) {
 132                 assert(radclient_tail != radclient);
 133                 next->prev = prev;
 134         } else if (radclient_tail) {
 135                 assert(radclient_tail == radclient);
 136                 radclient_tail = prev;
 137         }
 138
 139         free(radclient);
 140 }
 141
 142 /*
 143  *      Initialize a radclient data structure
 144  */
 145 static radclient_t *radclient_init(const char *filename)
 146 {
 147         FILE *fp;
 148         VALUE_PAIR *vp;
 149         radclient_t *start, *radclient, *prev = NULL;
 150         int filedone = 0;
 151         int packet_number = 1;
 152
 153         start = NULL;
 154         assert(filename != NULL);
 155
 156         /*
 157          *      Determine where to read the VP's from.
 158          */
 159         if (strcmp(filename, "-") != 0) {
 160                 fp = fopen(filename, "r");
 161                 if (!fp) {
 162                         fprintf(stderr, "radclient: Error opening %s: %s\n",
 163                                 filename, strerror(errno));
 164                         return NULL;
 165                 }
 166         } else {
 167                 fp = stdin;
 168         }
 169
 170         /*
 171          *      Loop until the file is done.
 172          */
 173         do {
 174                 /*
 175                  *      Allocate it.
 176                  */
 177                 radclient = malloc(sizeof(*radclient));
 178                 if (!radclient) {
 179                         perror("radclient: X");
 180                         if (fp != stdin) fclose(fp);
 181                         return NULL; /* memory leak "start" */
 182                 }
 183                 memset(radclient, 0, sizeof(*radclient));
 184
 185                 radclient->request = rad_alloc(1);
 186                 if (!radclient->request) {
 187                         librad_perror("radclient: Y");
 188                         radclient_free(radclient);
 189                         if (fp != stdin) fclose(fp);
 190                         return NULL; /* memory leak "start" */
 191                 }
 192
 193                 radclient->filename = filename;
 194                 radclient->request->id = -1; /* allocate when sending */
 195                 radclient->packet_number = packet_number++;
 196
 197                 /*
 198                  *      Read the VP's.
 199                  */
 200                 radclient->request->vps = readvp2(fp, &filedone, "radclient:");
 201                 if (!radclient->request->vps) {
 202                         radclient_free(radclient);
 203                         if (fp != stdin) fclose(fp);
 204                         return start; /* done: return the list */
 205                 }
 206
 207                 /*
 208                  *      Keep a copy of the the User-Password attribute.
 209                  */
 210                 if ((vp = pairfind(radclient->request->vps, PW_USER_PASSWORD)) != NULL) {
 211                         strlcpy(radclient->password, vp->vp_strvalue,
 212                                 sizeof(radclient->password));
 213                         /*
 214                          *      Otherwise keep a copy of the CHAP-Password attribute.
 215                          */
 216                 } else if ((vp = pairfind(radclient->request->vps, PW_CHAP_PASSWORD)) != NULL) {
 217                         strlcpy(radclient->password, vp->vp_strvalue,
 218                                 sizeof(radclient->password));
 219                 } else {
 220                         radclient->password[0] = '\0';
 221                 }
 222
 223                 /*
 224                  *  Fix up Digest-Attributes issues
 225                  */
 226                 for (vp = radclient->request->vps; vp != NULL; vp = vp->next) {
 227                         switch (vp->attribute) {
 228                         default:
 229                                 break;
 230
 231                                 /*
 232                                  *      Allow it to set the packet type in
 233                                  *      the attributes read from the file.
 234                                  */
 235                         case PW_PACKET_TYPE:
 236                                 radclient->request->code = vp->vp_integer;
 237                                 break;
 238
 239                         case PW_PACKET_DST_PORT:
 240                                 radclient->request->dst_port = (vp->vp_integer & 0xffff);
 241                                 break;
 242
 243                         case PW_PACKET_DST_IP_ADDRESS:
 244                                 radclient->request->dst_ipaddr.af = AF_INET;
 245                                 radclient->request->dst_ipaddr.ipaddr.ip4addr.s_addr = vp->vp_ipaddr;
 246                                 break;
 247
 248                         case PW_PACKET_DST_IPV6_ADDRESS:
 249                                 radclient->request->dst_ipaddr.af = AF_INET6;
 250                                 radclient->request->dst_ipaddr.ipaddr.ip6addr = vp->vp_ipv6addr;
 251                                 break;
 252
 253                         case PW_PACKET_SRC_PORT:
 254                                 radclient->request->src_port = (vp->vp_integer & 0xffff);
 255                                 break;
 256
 257                         case PW_PACKET_SRC_IP_ADDRESS:
 258                                 radclient->request->src_ipaddr.af = AF_INET;
 259                                 radclient->request->src_ipaddr.ipaddr.ip4addr.s_addr = vp->vp_ipaddr;
 260                                 break;
 261
 262                         case PW_PACKET_SRC_IPV6_ADDRESS:
 263                                 radclient->request->src_ipaddr.af = AF_INET6;
 264                                 radclient->request->src_ipaddr.ipaddr.ip6addr = vp->vp_ipv6addr;
 265                                 break;
 266
 267                         case PW_DIGEST_REALM:
 268                         case PW_DIGEST_NONCE:
 269                         case PW_DIGEST_METHOD:
 270                         case PW_DIGEST_URI:
 271                         case PW_DIGEST_QOP:
 272                         case PW_DIGEST_ALGORITHM:
 273                         case PW_DIGEST_BODY_DIGEST:
 274                         case PW_DIGEST_CNONCE:
 275                         case PW_DIGEST_NONCE_COUNT:
 276                         case PW_DIGEST_USER_NAME:
 277                                 /* overlapping! */
 278                                 memmove(&vp->vp_octets[2], &vp->vp_octets[0],
 279                                         vp->length);
 280                                 vp->vp_octets[0] = vp->attribute - PW_DIGEST_REALM + 1;
 281                                 vp->length += 2;
 282                                 vp->vp_octets[1] = vp->length;
 283                                 vp->attribute = PW_DIGEST_ATTRIBUTES;
 284                                 break;
 285                         }
 286                 } /* loop over the VP's we read in */
 287
 288                 if (!start) {
 289                         start = radclient;
 290                         prev = start;
 291                 } else {
 292                         prev->next = radclient;
 293                         radclient->prev = prev;
 294                         prev = radclient;
 295                 }
 296         } while (!filedone); /* loop until the file is done. */
 297
 298         if (fp != stdin) fclose(fp);
 299
 300         /*
 301          *      And we're done.
 302          */
 303         return start;
 304 }
 305
 306
 307 /*
 308  *      Sanity check each argument.
 309  */
 310 static int radclient_sane(radclient_t *radclient)
 311 {
 312         if (radclient->request->dst_port == 0) {
 313                 radclient->request->dst_port = server_port;
 314         }
 315         if (radclient->request->dst_ipaddr.af == AF_UNSPEC) {
 316                 if (server_ipaddr.af == AF_UNSPEC) {
 317                         fprintf(stderr, "radclient: No server was given, but request %d in file %s did not contain Packet-Dst-IP-Address\n",
 318                                 radclient->packet_number, radclient->filename);
 319                         return -1;
 320                 }
 321                 radclient->request->dst_ipaddr = server_ipaddr;
 322         }
 323         if (radclient->request->code == 0) {
 324                 if (packet_code == -1) {
 325                         fprintf(stderr, "radclient: Request was \"auto\", but request %d in file %s did not contain Packet-Type\n",
 326                                 radclient->packet_number, radclient->filename);
 327                         return -1;
 328                 }
 329
 330                 radclient->request->code = packet_code;
 331         }
 332         radclient->request->sockfd = -1;
 333
 334         return 0;
 335 }
 336
 337
 338 /*
 339  *      For request handline.
 340  */
 341 static int filename_cmp(const void *one, const void *two)
 342 {
 343         return strcmp((const char *) one, (const char *) two);
 344 }
 345
 346 static int filename_walk(void *context, void *data)
 347 {
 348         const char      *filename = data;
 349         radclient_t     *radclient;
 350
 351         context = context;      /* -Wunused */
 352
 353         /*
 354          *      Initialize the request we're about
 355          *      to send.
 356          */
 357         radclient = radclient_init(filename);
 358         if (!radclient) {
 359                 exit(1);
 360         }
 361
 362         if (!radclient_head) {
 363                 assert(radclient_tail == NULL);
 364                 radclient_head = radclient;
 365         } else {
 366                 assert(radclient_tail->next == NULL);
 367                 radclient_tail->next = radclient;
 368                 radclient->prev = radclient_tail;
 369         }
 370
 371         /*
 372          *      We may have had a list of "radclient" structures
 373          *      returned to us.
 374          */
 375         while (radclient->next) radclient = radclient->next;
 376         radclient_tail = radclient;
 377
 378         return 0;
 379 }
 380
 381
 382 /*
 383  *      Deallocate packet ID, etc.
 384  */
 385 static void deallocate_id(radclient_t *radclient)
 386 {
 387         if (!radclient || !radclient->request ||
 388             (radclient->request->id < 0)) {
 389                 return;
 390         }
 391
 392         /*
 393          *      One more unused RADIUS ID.
 394          */
 395         fr_packet_list_id_free(pl, radclient->request);
 396         radclient->request->id = -1;
 397
 398         /*
 399          *      If we've already sent a packet, free up the old one,
 400          *      and ensure that the next packet has a unique
 401          *      authentication vector.
 402          */
 403         if (radclient->request->data) {
 404                 free(radclient->request->data);
 405                 radclient->request->data = NULL;
 406         }
 407
 408         if (radclient->reply) rad_free(&radclient->reply);
 409 }
 410
 411
 412 static void print_hex(RADIUS_PACKET *packet)
 413 {
 414         int i;
 415
 416         if (!packet->data) return;
 417
 418         printf("  Code:\t\t%u\n", packet->data[0]);
 419         printf("  Id:\t\t%u\n", packet->data[1]);
 420         printf("  Length:\t%u\n", ((packet->data[2] << 8) |
 421                                    (packet->data[3])));
 422         printf("  Vector:\t");
 423         for (i = 4; i < 20; i++) {
 424                 printf("%02x", packet->data[i]);
 425         }
 426         printf("\n");
 427
 428         if (packet->data_len > 20) {
 429                 int total;
 430                 const uint8_t *ptr;
 431                 printf("  Data:");
 432
 433                 total = packet->data_len - 20;
 434                 ptr = packet->data + 20;
 435
 436                 while (total > 0) {
 437                         int attrlen;
 438
 439                         printf("\t\t");
 440                         if (total < 2) { /* too short */
 441                                 printf("%02x\n", *ptr);
 442                                 break;
 443                         }
 444
 445                         if (ptr[1] > total) { /* too long */
 446                                 for (i = 0; i < total; i++) {
 447                                         printf("%02x ", ptr[i]);
 448                                 }
 449                                 break;
 450                         }
 451
 452                         printf("%02x  %02x  ", ptr[0], ptr[1]);
 453                         attrlen = ptr[1] - 2;
 454                         ptr += 2;
 455                         total -= 2;
 456
 457                         for (i = 0; i < attrlen; i++) {
 458                                 if ((i > 0) && ((i & 0x0f) == 0x00))
 459                                         printf("\t\t\t");
 460                                 printf("%02x ", ptr[i]);
 461                                 if ((i & 0x0f) == 0x0f) printf("\n");
 462                         }
 463
 464                         if ((attrlen & 0x0f) != 0x00) printf("\n");
 465
 466                         ptr += attrlen;
 467                         total -= attrlen;
 468                 }
 469         }
 470         fflush(stdout);
 471 }
 472
 473 /*
 474  *      Send one packet.
 475  */
 476 static int send_one_packet(radclient_t *radclient)
 477 {
 478         assert(radclient->done == 0);
 479
 480         /*
 481          *      Remember when we have to wake up, to re-send the
 482          *      request, of we didn't receive a response.
 483          */
 484         if ((sleep_time == -1) ||
 485             (sleep_time > (int) timeout)) {
 486                 sleep_time = (int) timeout;
 487         }
 488
 489         /*
 490          *      Haven't sent the packet yet.  Initialize it.
 491          */
 492         if (radclient->request->id == -1) {
 493                 int i, rcode;
 494
 495                 assert(radclient->reply == NULL);
 496
 497                 /*
 498                  *      Didn't find a free packet ID, we're not done,
 499                  *      we don't sleep, and we stop trying to process
 500                  *      this packet.
 501                  */
 502         retry:
 503                 rcode = fr_packet_list_id_alloc(pl, radclient->request);
 504                 if (rcode < 0) {
 505                         int mysockfd;
 506
 507                         mysockfd = fr_socket(&client_ipaddr, 0);
 508                         if (!mysockfd) {
 509                                 fprintf(stderr, "radclient: Can't open new socket\n");
 510                                 exit(1);
 511                         }
 512                         if (!fr_packet_list_socket_add(pl, mysockfd)) {
 513                                 fprintf(stderr, "radclient: Can't add new socket\n");
 514                                 exit(1);
 515                         }
 516                         goto retry;
 517                 }
 518
 519                 if (rcode == 0) {
 520                         done = 0;
 521                         sleep_time = 0;
 522                         return 0;
 523                 }
 524
 525                 assert(radclient->request->id != -1);
 526                 assert(radclient->request->data == NULL);
 527
 528                 for (i = 0; i < 4; i++) {
 529                         *((uint32_t *) radclient->request->vector) = fr_rand();
 530                 }
 531
 532                 /*
 533                  *      Update the password, so it can be encrypted with the
 534                  *      new authentication vector.
 535                  */
 536                 if (radclient->password[0] != '\0') {
 537                         VALUE_PAIR *vp;
 538
 539                         if ((vp = pairfind(radclient->request->vps, PW_USER_PASSWORD)) != NULL) {
 540                                 strlcpy(vp->vp_strvalue, radclient->password,
 541                                         sizeof(vp->vp_strvalue));
 542                                 vp->length = strlen(vp->vp_strvalue);
 543
 544                         } else if ((vp = pairfind(radclient->request->vps, PW_CHAP_PASSWORD)) != NULL) {
 545                           /*
 546                            *    FIXME: AND there's no CHAP-Challenge,
 547                            *           AND vp->length != 17
 548                            *           AND rad_chap_encode() != vp->vp_octets
 549                            */
 550                                 strlcpy(vp->vp_strvalue, radclient->password,
 551                                         sizeof(vp->vp_strvalue));
 552                                 vp->length = strlen(vp->vp_strvalue);
 553
 554                                 rad_chap_encode(radclient->request,
 555                                                 vp->vp_octets,
 556                                                 radclient->request->id, vp);
 557                                 vp->length = 17;
 558                         }
 559                 }
 560
 561                 radclient->timestamp = time(NULL);
 562                 radclient->tries = 1;
 563                 radclient->resend++;
 564
 565                 /*
 566                  *      Duplicate found.  Serious error!
 567                  */
 568                 if (!fr_packet_list_insert(pl, &radclient->request)) {
 569                         assert(0 == 1);
 570                 }
 571
 572         } else {                /* radclient->request->id >= 0 */
 573                 time_t now = time(NULL);
 574
 575                 /*
 576                  *      FIXME: Accounting packets are never retried!
 577                  *      The Acct-Delay-Time attribute is updated to
 578                  *      reflect the delay, and the packet is re-sent
 579                  *      from scratch!
 580                  */
 581
 582                 /*
 583                  *      Not time for a retry, do so.
 584                  */
 585                 if ((now - radclient->timestamp) < timeout) {
 586                         /*
 587                          *      When we walk over the tree sending
 588                          *      packets, we update the minimum time
 589                          *      required to sleep.
 590                          */
 591                         if ((sleep_time == -1) ||
 592                             (sleep_time > (now - radclient->timestamp))) {
 593                                 sleep_time = now - radclient->timestamp;
 594                         }
 595                         return 0;
 596                 }
 597
 598                 /*
 599                  *      We're not trying later, maybe the packet is done.
 600                  */
 601                 if (radclient->tries == retries) {
 602                         assert(radclient->request->id >= 0);
 603
 604                         /*
 605                          *      Delete the request from the tree of
 606                          *      outstanding requests.
 607                          */
 608                         fr_packet_list_yank(pl, radclient->request);
 609
 610                         fprintf(stderr, "radclient: no response from server for ID %d socket %d\n", radclient->request->id, radclient->request->sockfd);
 611                         deallocate_id(radclient);
 612
 613                         /*
 614                          *      Normally we mark it "done" when we've received
 615                          *      the response, but this is a special case.
 616                          */
 617                         if (radclient->resend == resend_count) {
 618                                 radclient->done = 1;
 619                         }
 620                         totallost++;
 621                         return -1;
 622                 }
 623
 624                 /*
 625                  *      We are trying later.
 626                  */
 627                 radclient->timestamp = now;
 628                 radclient->tries++;
 629         }
 630
 631
 632         /*
 633          *      Send the packet.
 634          */
 635         if (rad_send(radclient->request, NULL, secret) < 0) {
 636                 fprintf(stderr, "radclient: Failed to send packet for ID %d: %s\n",
 637                         radclient->request->id, librad_errstr);
 638         }
 639
 640         if (librad_debug > 2) print_hex(radclient->request);
 641
 642         return 0;
 643 }
 644
 645 /*
 646  *      Receive one packet, maybe.
 647  */
 648 static int recv_one_packet(int wait_time)
 649 {
 650         fd_set          set;
 651         struct timeval  tv;
 652         radclient_t     *radclient;
 653         RADIUS_PACKET   *reply, **request_p;
 654         volatile int max_fd;
 655
 656         /* And wait for reply, timing out as necessary */
 657         FD_ZERO(&set);
 658
 659         max_fd = fr_packet_list_fd_set(pl, &set);
 660         if (max_fd < 0) exit(1); /* no sockets to listen on! */
 661
 662         if (wait_time <= 0) {
 663                 tv.tv_sec = 0;
 664         } else {
 665                 tv.tv_sec = wait_time;
 666         }
 667         tv.tv_usec = 0;
 668
 669         /*
 670          *      No packet was received.
 671          */
 672         if (select(max_fd, &set, NULL, NULL, &tv) <= 0) {
 673                 return 0;
 674         }
 675
 676         /*
 677          *      Look for the packet.
 678          */
 679         reply = fr_packet_list_recv(pl, &set);
 680         if (!reply) {
 681                 fprintf(stderr, "radclient: received bad packet: %s\n",
 682                         librad_errstr);
 683                 return -1;      /* bad packet */
 684         }
 685
 686         /*
 687          *      udpfromto issues.  We may have bound to "*",
 688          *      and we want to find the replies that are sent to
 689          *      (say) 127.0.0.1.
 690          */
 691         reply->dst_ipaddr = client_ipaddr;
 692
 693         if (librad_debug > 2) print_hex(reply);
 694
 695         request_p = fr_packet_list_find_byreply(pl, reply);
 696         if (!request_p) {
 697                 fprintf(stderr, "radclient: received response to request we did not send. (id=%d socket %d)\n", reply->id, reply->sockfd);
 698                 rad_free(&reply);
 699                 return -1;      /* got reply to packet we didn't send */
 700         }
 701         radclient = fr_packet2myptr(radclient_t, request, request_p);
 702
 703         /*
 704          *      Fails the signature validation: not a real reply.
 705          *      FIXME: Silently drop it and listen for another packet.
 706          */
 707         if (rad_verify(reply, radclient->request, secret) < 0) {
 708                 librad_perror("rad_verify");
 709                 totallost++;
 710                 goto packet_done; /* shared secret is incorrect */
 711         }
 712
 713         fr_packet_list_yank(pl, radclient->request);
 714         if (print_filename) printf("%s:%d %d\n",
 715                                    radclient->filename,
 716                                    radclient->packet_number,
 717                                    reply->code);
 718         deallocate_id(radclient);
 719         radclient->reply = reply;
 720
 721         /*
 722          *      If this fails, we're out of memory.
 723          */
 724         if (rad_decode(reply, radclient->request, secret) != 0) {
 725                 librad_perror("rad_decode");
 726                 totallost++;
 727                 goto packet_done;
 728         }
 729
 730         /* libradius debug already prints out the value pairs for us */
 731         if (!librad_debug && do_output) {
 732                 printf("Received response ID %d, code %d, length = %d\n",
 733                        reply->id, reply->code, reply->data_len);
 734                 vp_printlist(stdout, reply->vps);
 735         }
 736         if (reply->code != PW_AUTHENTICATION_REJECT) {
 737                 totalapp++;
 738         } else {
 739                 totaldeny++;
 740         }
 741
 742         if (radclient->resend == resend_count) {
 743                 radclient->done = 1;
 744         }
 745
 746  packet_done:
 747         rad_free(&radclient->reply);
 748
 749         return 0;
 750 }
 751
 752
 753 static int getport(const char *name)
 754 {
 755         struct  servent         *svp;
 756
 757         svp = getservbyname (name, "udp");
 758         if (!svp) {
 759                 return 0;
 760         }
 761
 762         return ntohs(svp->s_port);
 763 }
 764
 765 int main(int argc, char **argv)
 766 {
 767         char *p;
 768         int c;
 769         const char *radius_dir = RADDBDIR;
 770         char filesecret[256];
 771         FILE *fp;
 772         int do_summary = 0;
 773         int persec = 0;
 774         int parallel = 1;
 775         radclient_t     *this;
 776         int force_af = AF_UNSPEC;
 777
 778         librad_debug = 0;
 779
 780         filename_tree = rbtree_create(filename_cmp, NULL, 0);
 781         if (!filename_tree) {
 782                 fprintf(stderr, "radclient: Out of memory\n");
 783                 exit(1);
 784         }
 785
 786         while ((c = getopt(argc, argv, "46c:d:f:Fhi:n:p:qr:sS:t:vx")) != EOF) switch(c) {
 787                 case '4':
 788                         force_af = AF_INET;
 789                         break;
 790                 case '6':
 791                         force_af = AF_INET6;
 792                         break;
 793                 case 'c':
 794                         if (!isdigit((int) *optarg))
 795                                 usage();
 796                         resend_count = atoi(optarg);
 797                         break;
 798                 case 'd':
 799                         radius_dir = optarg;
 800                         break;
 801                 case 'f':
 802                         rbtree_insert(filename_tree, optarg);
 803                         break;
 804                 case 'F':
 805                         print_filename = 1;
 806                         break;
 807                 case 'i':       /* currently broken */
 808                         if (!isdigit((int) *optarg))
 809                                 usage();
 810                         last_used_id = atoi(optarg);
 811                         if ((last_used_id < 0) || (last_used_id > 255)) {
 812                                 usage();
 813                         }
 814                         break;
 815
 816                 case 'n':
 817                         persec = atoi(optarg);
 818                         if (persec <= 0) usage();
 819                         break;
 820
 821                         /*
 822                          *      Note that sending MANY requests in
 823                          *      parallel can over-run the kernel
 824                          *      queues, and Linux will happily discard
 825                          *      packets.  So even if the server responds,
 826                          *      the client may not see the response.
 827                          */
 828                 case 'p':
 829                         parallel = atoi(optarg);
 830                         if (parallel <= 0) usage();
 831                         break;
 832
 833                 case 'q':
 834                         do_output = 0;
 835                         break;
 836                 case 'r':
 837                         if (!isdigit((int) *optarg))
 838                                 usage();
 839                         retries = atoi(optarg);
 840                         if ((retries == 0) || (retries > 1000)) usage();
 841                         break;
 842                 case 's':
 843                         do_summary = 1;
 844                         break;
 845                case 'S':
 846                        fp = fopen(optarg, "r");
 847                        if (!fp) {
 848                                fprintf(stderr, "radclient: Error opening %s: %s\n",
 849                                        optarg, strerror(errno));
 850                                exit(1);
 851                        }
 852                        if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
 853                                fprintf(stderr, "radclient: Error reading %s: %s\n",
 854                                        optarg, strerror(errno));
 855                                exit(1);
 856                        }
 857                        fclose(fp);
 858
 859                        /* truncate newline */
 860                        p = filesecret + strlen(filesecret) - 1;
 861                        while ((p >= filesecret) &&
 862                               (*p < ' ')) {
 863                                *p = '\0';
 864                                --p;
 865                        }
 866
 867                        if (strlen(filesecret) < 2) {
 868                                fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
 869                                exit(1);
 870                        }
 871                        secret = filesecret;
 872                        break;
 873                 case 't':
 874                         if (!isdigit((int) *optarg))
 875                                 usage();
 876                         timeout = atof(optarg);
 877                         break;
 878                 case 'v':
 879                         printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
 880                         exit(0);
 881                         break;
 882                 case 'x':
 883                         librad_debug++;
 884                         break;
 885                 case 'h':
 886                 default:
 887                         usage();
 888                         break;
 889         }
 890         argc -= (optind - 1);
 891         argv += (optind - 1);
 892
 893         if ((argc < 3)  ||
 894             ((secret == NULL) && (argc < 4))) {
 895                 usage();
 896         }
 897
 898         if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
 899                 librad_perror("radclient");
 900                 return 1;
 901         }
 902
 903         /*
 904          *      Resolve hostname.
 905          */
 906         server_ipaddr.af = force_af;
 907         if (strcmp(argv[1], "-") != 0) {
 908                 const char *hostname = argv[1];
 909                 const char *portname = argv[1];
 910                 char buffer[256];
 911
 912                 if (*argv[1] == '[') { /* IPv6 URL encoded */
 913                         p = strchr(argv[1], ']');
 914                         if ((p - argv[1]) >= sizeof(buffer)) {
 915                                 usage();
 916                         }
 917
 918                         memcpy(buffer, argv[1] + 1, p - argv[1] - 1);
 919                         buffer[p - argv[1] - 1] = '\0';
 920
 921                         hostname = buffer;
 922                         portname = p + 1;
 923
 924                 }
 925                 p = strchr(portname, ':');
 926                 if (p && (strchr(p + 1, ':') == NULL)) {
 927                         *p = '\0';
 928                         portname = p + 1;
 929                 } else {
 930                         portname = NULL;
 931                 }
 932
 933                 if (ip_hton(hostname, force_af, &server_ipaddr) < 0) {
 934                         fprintf(stderr, "radclient: Failed to find IP address for host %s: %s\n", hostname, strerror(errno));
 935                         exit(1);
 936                 }
 937
 938                 /*
 939                  *      Strip port from hostname if needed.
 940                  */
 941                 if (portname) server_port = atoi(portname);
 942         }
 943
 944         /*
 945          *      See what kind of request we want to send.
 946          */
 947         if (strcmp(argv[2], "auth") == 0) {
 948                 if (server_port == 0) server_port = getport("radius");
 949                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 950                 packet_code = PW_AUTHENTICATION_REQUEST;
 951
 952         } else if (strcmp(argv[2], "challenge") == 0) {
 953                 if (server_port == 0) server_port = getport("radius");
 954                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 955                 packet_code = PW_ACCESS_CHALLENGE;
 956
 957         } else if (strcmp(argv[2], "acct") == 0) {
 958                 if (server_port == 0) server_port = getport("radacct");
 959                 if (server_port == 0) server_port = PW_ACCT_UDP_PORT;
 960                 packet_code = PW_ACCOUNTING_REQUEST;
 961                 do_summary = 0;
 962
 963         } else if (strcmp(argv[2], "status") == 0) {
 964                 if (server_port == 0) server_port = getport("radius");
 965                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 966                 packet_code = PW_STATUS_SERVER;
 967
 968         } else if (strcmp(argv[2], "disconnect") == 0) {
 969                 if (server_port == 0) server_port = PW_POD_UDP_PORT;
 970                 packet_code = PW_DISCONNECT_REQUEST;
 971
 972         } else if (strcmp(argv[2], "coa") == 0) {
 973                 if (server_port == 0) server_port = PW_POD_UDP_PORT;
 974                 packet_code = PW_COA_REQUEST;
 975
 976         } else if (strcmp(argv[2], "auto") == 0) {
 977                 packet_code = -1;
 978
 979         } else if (isdigit((int) argv[2][0])) {
 980                 if (server_port == 0) server_port = getport("radius");
 981                 if (server_port == 0) server_port = PW_AUTH_UDP_PORT;
 982                 packet_code = atoi(argv[2]);
 983         } else {
 984                 usage();
 985         }
 986
 987         /*
 988          *      Add the secret.
 989          */
 990         if (argv[3]) secret = argv[3];
 991
 992         /*
 993          *      If no '-f' is specified, we're reading from stdin.
 994          */
 995         if (rbtree_num_elements(filename_tree) == 0) {
 996                 rbtree_insert(filename_tree, "-");
 997         }
 998
 999         /*
1000          *      Walk over the list of filenames, creating the requests.
1001          */
1002         if (rbtree_walk(filename_tree, InOrder, filename_walk, NULL) != 0) {
1003                 exit(1);
1004         }
1005
1006         /*
1007          *      No packets read.  Die.
1008          */
1009         if (!radclient_head) {
1010                 fprintf(stderr, "radclient: Nothing to send.\n");
1011                 exit(1);
1012         }
1013
1014         /*
1015          *      Bind to the first specified IP address and port.
1016          *      This means we ignore later ones.
1017          */
1018         if (radclient_head->request->src_ipaddr.af == AF_UNSPEC) {
1019                 memset(&client_ipaddr, 0, sizeof(client_ipaddr));
1020                 client_ipaddr.af = server_ipaddr.af;
1021                 client_port = 0;
1022         } else {
1023                 client_ipaddr = radclient_head->request->src_ipaddr;
1024                 client_port = radclient_head->request->src_port;
1025         }
1026         sockfd = fr_socket(&client_ipaddr, client_port);
1027         if (sockfd < 0) {
1028                 fprintf(stderr, "radclient: socket: %s\n", librad_errstr);
1029                 exit(1);
1030         }
1031
1032         pl = fr_packet_list_create(1);
1033         if (!pl) {
1034                 fprintf(stderr, "radclient: Out of memory\n");
1035                 exit(1);
1036         }
1037
1038         if (!fr_packet_list_socket_add(pl, sockfd)) {
1039                 fprintf(stderr, "radclient: Out of memory\n");
1040                 exit(1);
1041         }
1042
1043         /*
1044          *      Walk over the list of packets, sanity checking
1045          *      everything.
1046          */
1047         for (this = radclient_head; this != NULL; this = this->next) {
1048                 this->request->src_ipaddr = client_ipaddr;
1049                 this->request->src_port = client_port;
1050                 if (radclient_sane(this) != 0) {
1051                         exit(1);
1052                 }
1053         }
1054
1055         /*
1056          *      Walk over the packets to send, until
1057          *      we're all done.
1058          *
1059          *      FIXME: This currently busy-loops until it receives
1060          *      all of the packets.  It should really have some sort of
1061          *      send packet, get time to wait, select for time, etc.
1062          *      loop.
1063          */
1064         do {
1065                 int n = parallel;
1066                 radclient_t *next;
1067                 const char *filename = NULL;
1068
1069                 done = 1;
1070                 sleep_time = -1;
1071
1072                 /*
1073                  *      Walk over the packets, sending them.
1074                  */
1075
1076                 for (this = radclient_head; this != NULL; this = next) {
1077                         next = this->next;
1078
1079                         /*
1080                          *      If there's a packet to receive,
1081                          *      receive it, but don't wait for a
1082                          *      packet.
1083                          */
1084                         recv_one_packet(0);
1085
1086                         /*
1087                          *      This packet is done.  Delete it.
1088                          */
1089                         if (this->done) {
1090                                 radclient_free(this);
1091                                 continue;
1092                         }
1093
1094                         /*
1095                          *      Packets from multiple '-f' are sent
1096                          *      in parallel.
1097                          *
1098                          *      Packets from one file are sent in
1099                          *      series, unless '-p' is specified, in
1100                          *      which case N packets from each file
1101                          *      are sent in parallel.
1102                          */
1103                         if (this->filename != filename) {
1104                                 filename = this->filename;
1105                                 n = parallel;
1106                         }
1107
1108                         if (n > 0) {
1109                                 n--;
1110
1111                                 /*
1112                                  *      Send the current packet.
1113                                  */
1114                                 send_one_packet(this);
1115
1116                                 /*
1117                                  *      Wait a little before sending
1118                                  *      the next packet, if told to.
1119                                  */
1120                                 if (persec) {
1121                                         struct timeval tv;
1122
1123                                         /*
1124                                          *      Don't sleep elsewhere.
1125                                          */
1126                                         sleep_time = 0;
1127
1128                                         if (persec == 1) {
1129                                                 tv.tv_sec = 1;
1130                                                 tv.tv_usec = 0;
1131                                         } else {
1132                                                 tv.tv_sec = 0;
1133                                                 tv.tv_usec = 1000000/persec;
1134                                         }
1135
1136                                         /*
1137                                          *      Sleep for milliseconds,
1138                                          *      portably.
1139                                          *
1140                                          *      If we get an error or
1141                                          *      a signal, treat it like
1142                                          *      a normal timeout.
1143                                          */
1144                                         select(0, NULL, NULL, NULL, &tv);
1145                                 }
1146
1147                                 /*
1148                                  *      If we haven't sent this packet
1149                                  *      often enough, we're not done,
1150                                  *      and we shouldn't sleep.
1151                                  */
1152                                 if (this->resend < resend_count) {
1153                                         done = 0;
1154                                         sleep_time = 0;
1155                                 }
1156                         } else { /* haven't sent this packet, we're not done */
1157                                 assert(this->done == 0);
1158                                 assert(this->reply == NULL);
1159                                 done = 0;
1160                         }
1161                 }
1162
1163                 /*
1164                  *      Still have outstanding requests.
1165                  */
1166                 if (fr_packet_list_num_elements(pl) > 0) {
1167                         done = 0;
1168                 } else {
1169                         sleep_time = 0;
1170                 }
1171
1172                 /*
1173                  *      Nothing to do until we receive a request, so
1174                  *      sleep until then.  Once we receive one packet,
1175                  *      we go back, and walk through the whole list again,
1176                  *      sending more packets (if necessary), and updating
1177                  *      the sleep time.
1178                  */
1179                 if (!done && (sleep_time > 0)) {
1180                         recv_one_packet(sleep_time);
1181                 }
1182         } while (!done);
1183
1184         rbtree_free(filename_tree);
1185         fr_packet_list_free(pl);
1186         dict_free();
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 }