src/main/detail.c

   1 /*
   2  * detail.c     Process the detail file
   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 2007  The FreeRADIUS server project
  21  * Copyright 2007  Alan DeKok <aland@deployingradius.com>
  22  */
  23
  24 #include <freeradius-devel/ident.h>
  25 RCSID("$Id$")
  26
  27 #include <freeradius-devel/radiusd.h>
  28 #include <freeradius-devel/modules.h>
  29 #include <freeradius-devel/detail.h>
  30 #include <freeradius-devel/process.h>
  31 #include <freeradius-devel/rad_assert.h>
  32
  33 #ifdef HAVE_SYS_STAT_H
  34 #include <sys/stat.h>
  35 #endif
  36
  37 #ifdef HAVE_GLOB_H
  38 #include <glob.h>
  39 #endif
  40
  41 #include <fcntl.h>
  42
  43 #ifdef WITH_DETAIL
  44
  45 #define USEC (1000000)
  46
  47 static FR_NAME_NUMBER state_names[] = {
  48         { "unopened", STATE_UNOPENED },
  49         { "unlocked", STATE_UNLOCKED },
  50         { "header", STATE_HEADER },
  51         { "reading", STATE_READING },
  52         { "queued", STATE_QUEUED },
  53         { "running", STATE_RUNNING },
  54         { "no-reply", STATE_NO_REPLY },
  55         { "replied", STATE_REPLIED },
  56
  57         { NULL, 0 }
  58 };
  59
  60 /*
  61  *      If we're limiting outstanding packets, then mark the response
  62  *      as being sent.
  63  */
  64 int detail_send(rad_listen_t *listener, REQUEST *request)
  65 {
  66         int rtt;
  67         struct timeval now;
  68         listen_detail_t *data = listener->data;
  69
  70         rad_assert(request->listener == listener);
  71         rad_assert(listener->send == detail_send);
  72
  73         /*
  74          *      This request timed out.  Remember that, and tell the
  75          *      caller it's OK to read more "detail" file stuff.
  76          */
  77         if (request->reply->code == 0) {
  78                 data->delay_time = data->retry_interval * USEC;
  79                 data->signal = 1;
  80                 data->state = STATE_NO_REPLY;
  81
  82                 RDEBUG("Detail - No response configured for request %d.  Will retry in %d seconds",
  83                        request->number, data->retry_interval);
  84
  85                 radius_signal_self(RADIUS_SIGNAL_SELF_DETAIL);
  86                 return 0;
  87         }
  88
  89         /*
  90          *      We call gettimeofday a lot.  But it should be OK,
  91          *      because there's nothing else to do.
  92          */
  93         gettimeofday(&now, NULL);
  94
  95         /*
  96          *      If we haven't sent a packet in the last second, reset
  97          *      the RTT.
  98          */
  99         now.tv_sec -= 1;
 100         if (timercmp(&data->last_packet, &now, <)) {
 101                 data->has_rtt = FALSE;
 102         }
 103         now.tv_sec += 1;
 104
 105         /*
 106          *      Only one detail packet may be outstanding at a time,
 107          *      so it's safe to update some entries in the detail
 108          *      structure.
 109          *
 110          *      We keep smoothed round trip time (SRTT), but not round
 111          *      trip timeout (RTO).  We use SRTT to calculate a rough
 112          *      load factor.
 113          */
 114         rtt = now.tv_sec - request->packet->timestamp.tv_sec;
 115         rtt *= USEC;
 116         rtt += now.tv_usec;
 117         rtt -= request->packet->timestamp.tv_usec;
 118
 119         /*
 120          *      If we're proxying, the RTT is our processing time,
 121          *      plus the network delay there and back, plus the time
 122          *      on the other end to process the packet.  Ideally, we
 123          *      should remove the network delays from the RTT, but we
 124          *      don't know what they are.
 125          *
 126          *      So, to be safe, we over-estimate the total cost of
 127          *      processing the packet.
 128          */
 129         if (!data->has_rtt) {
 130                 data->has_rtt = TRUE;
 131                 data->srtt = rtt;
 132                 data->rttvar = rtt / 2;
 133
 134         } else {
 135                 data->rttvar -= data->rttvar >> 2;
 136                 data->rttvar += (data->srtt - rtt);
 137                 data->srtt -= data->srtt >> 3;
 138                 data->srtt += rtt >> 3;
 139         }
 140
 141         /*
 142          *      Calculate the time we wait before sending the next
 143          *      packet.
 144          *
 145          *      rtt / (rtt + delay) = load_factor / 100
 146          */
 147         data->delay_time = (data->srtt * (100 - data->load_factor)) / (data->load_factor);
 148
 149         /*
 150          *      Cap delay at 4 packets/s.  If the end system can't
 151          *      handle this, then it's very broken.
 152          */
 153         if (data->delay_time > (USEC / 4)) data->delay_time= USEC / 4;
 154
 155         RDEBUG3("Received response for request %d.  Will read the next packet in %d seconds",
 156                 request->number, data->delay_time / USEC);
 157
 158         data->last_packet = now;
 159         data->signal = 1;
 160         data->state = STATE_REPLIED;
 161         data->counter++;
 162         radius_signal_self(RADIUS_SIGNAL_SELF_DETAIL);
 163
 164         return 0;
 165 }
 166
 167
 168 /*
 169  *      Open the detail file, if we can.
 170  *
 171  *      FIXME: create it, if it's not already there, so that the main
 172  *      server select() will wake us up if there's anything to read.
 173  */
 174 static int detail_open(rad_listen_t *this)
 175 {
 176         struct stat st;
 177         listen_detail_t *data = this->data;
 178         char *filename = data->filename;
 179
 180         rad_assert(data->state == STATE_UNOPENED);
 181         data->delay_time = USEC;
 182
 183         /*
 184          *      Open detail.work first, so we don't lose
 185          *      accounting packets.  It's probably better to
 186          *      duplicate them than to lose them.
 187          *
 188          *      Note that we're not writing to the file, but
 189          *      we've got to open it for writing in order to
 190          *      establish the lock, to prevent rlm_detail from
 191          *      writing to it.
 192          *
 193          *      This also means that if we're doing globbing,
 194          *      this file will be read && processed before the
 195          *      file globbing is done.
 196          */
 197         this->fd = open(data->filename_work, O_RDWR);
 198         if (this->fd < 0) {
 199                 DEBUG2("Polling for detail file %s", filename);
 200
 201                 /*
 202                  *      Try reading the detail file.  If it
 203                  *      doesn't exist, we can't do anything.
 204                  *
 205                  *      Doing the stat will tell us if the file
 206                  *      exists, even if we don't have permissions
 207                  *      to read it.
 208                  */
 209                 if (stat(filename, &st) < 0) {
 210 #ifdef HAVE_GLOB_H
 211                         unsigned int i;
 212                         int found;
 213                         time_t chtime;
 214                         glob_t files;
 215
 216                         memset(&files, 0, sizeof(files));
 217                         if (glob(filename, 0, NULL, &files) != 0) {
 218                                 return 0;
 219                         }
 220
 221                         chtime = 0;
 222                         found = -1;
 223                         for (i = 0; i < files.gl_pathc; i++) {
 224                                 if (stat(files.gl_pathv[i], &st) < 0) continue;
 225
 226                                 if ((i == 0) ||
 227                                     (st.st_ctime < chtime)) {
 228                                         chtime = st.st_ctime;
 229                                         found = i;
 230                                 }
 231                         }
 232
 233                         if (found < 0) {
 234                                 globfree(&files);
 235                                 return 0;
 236                         }
 237
 238                         filename = strdup(files.gl_pathv[found]);
 239                         globfree(&files);
 240 #else
 241                         return 0;
 242 #endif
 243                 }
 244
 245                 /*
 246                  *      Open it BEFORE we rename it, just to
 247                  *      be safe...
 248                  */
 249                 this->fd = open(filename, O_RDWR);
 250                 if (this->fd < 0) {
 251                         radlog(L_ERR, "Detail - Failed to open %s: %s",
 252                                filename, strerror(errno));
 253                         if (filename != data->filename) free(filename);
 254                         return 0;
 255                 }
 256
 257                 /*
 258                  *      Rename detail to detail.work
 259                  */
 260                 DEBUG("Detail - Renaming %s -> %s", filename, data->filename_work);
 261                 if (rename(filename, data->filename_work) < 0) {
 262                         if (filename != data->filename) free(filename);
 263                         close(this->fd);
 264                         this->fd = -1;
 265                         return 0;
 266                 }
 267                 if (filename != data->filename) free(filename);
 268         } /* else detail.work existed, and we opened it */
 269
 270         rad_assert(data->vps == NULL);
 271         rad_assert(data->fp == NULL);
 272
 273         data->state = STATE_UNLOCKED;
 274
 275         data->client_ip.af = AF_UNSPEC;
 276         data->timestamp = 0;
 277         data->offset = 0;
 278         data->packets = 0;
 279         data->tries = 0;
 280
 281         return 1;
 282 }
 283
 284
 285 /*
 286  *      FIXME: add a configuration "exit when done" so that the detail
 287  *      file reader can be used as a one-off tool to update stuff.
 288  *
 289  *      The time sequence for reading from the detail file is:
 290  *
 291  *      t_0             signalled that the server is idle, and we
 292  *                      can read from the detail file.
 293  *
 294  *      t_rtt           the packet has been processed successfully,
 295  *                      wait for t_delay to enforce load factor.
 296  *
 297  *      t_rtt + t_delay wait for signal that the server is idle.
 298  *
 299  */
 300 int detail_recv(rad_listen_t *listener)
 301 {
 302         char            key[256], op[8], value[1024];
 303         VALUE_PAIR      *vp, **tail;
 304         RADIUS_PACKET   *packet;
 305         char            buffer[2048];
 306         listen_detail_t *data = listener->data;
 307         struct timeval  now;
 308
 309         /*
 310          *      We may be in the main thread.  It needs to update the
 311          *      timers before we try to read from the file again.
 312          */
 313         if (data->signal) return 0;
 314
 315         switch (data->state) {
 316                 case STATE_UNOPENED:
 317         open_file:
 318                         rad_assert(listener->fd < 0);
 319
 320                         if (!detail_open(listener)) return 0;
 321
 322                         rad_assert(data->state == STATE_UNLOCKED);
 323                         rad_assert(listener->fd >= 0);
 324
 325                         /* FALL-THROUGH */
 326
 327                         /*
 328                          *      Try to lock fd.  If we can't, return.
 329                          *      If we can, continue.  This means that
 330                          *      the server doesn't block while waiting
 331                          *      for the lock to open...
 332                          */
 333                 case STATE_UNLOCKED:
 334                         /*
 335                          *      Note that we do NOT block waiting for
 336                          *      the lock.  We've re-named the file
 337                          *      above, so we've already guaranteed
 338                          *      that any *new* detail writer will not
 339                          *      be opening this file.  The only
 340                          *      purpose of the lock is to catch a race
 341                          *      condition where the execution
 342                          *      "ping-pongs" between radiusd &
 343                          *      radrelay.
 344                          */
 345                         if (rad_lockfd_nonblock(listener->fd, 0) < 0) {
 346                                 /*
 347                                  *      Close the FD.  The main loop
 348                                  *      will wake up in a second and
 349                                  *      try again.
 350                                  */
 351                                 close(listener->fd);
 352                                 listener->fd = -1;
 353                                 data->state = STATE_UNOPENED;
 354                                 return 0;
 355                         }
 356
 357                         data->fp = fdopen(listener->fd, "r");
 358                         if (!data->fp) {
 359                                 radlog(L_ERR, "FATAL: Failed to re-open detail file %s: %s",
 360                                        data->filename, strerror(errno));
 361                                 exit(1);
 362                         }
 363
 364                         /*
 365                          *      Look for the header
 366                          */
 367                         data->state = STATE_HEADER;
 368                         data->delay_time = USEC;
 369                         data->vps = NULL;
 370
 371                         /* FALL-THROUGH */
 372
 373                 case STATE_HEADER:
 374                 do_header:
 375                         data->tries = 0;
 376                         if (!data->fp) {
 377                                 data->state = STATE_UNOPENED;
 378                                 goto open_file;
 379                         }
 380
 381                         {
 382                                 struct stat buf;
 383
 384                                 fstat(listener->fd, &buf);
 385                                 if (((off_t) ftell(data->fp)) == buf.st_size) {
 386                                         goto cleanup;
 387                                 }
 388                         }
 389
 390                         /*
 391                          *      End of file.  Delete it, and re-set
 392                          *      everything.
 393                          */
 394                         if (feof(data->fp)) {
 395                         cleanup:
 396                                 DEBUG("Detail - unlinking %s",
 397                                       data->filename_work);
 398                                 unlink(data->filename_work);
 399                                 if (data->fp) fclose(data->fp);
 400                                 data->fp = NULL;
 401                                 listener->fd = -1;
 402                                 data->state = STATE_UNOPENED;
 403                                 rad_assert(data->vps == NULL);
 404
 405                                 if (data->one_shot) {
 406                                         radlog(L_INFO, "Finished reading \"one shot\" detail file - Exiting");
 407                                         radius_signal_self(RADIUS_SIGNAL_SELF_EXIT);
 408                                 }
 409
 410                                 return 0;
 411                         }
 412
 413                         /*
 414                          *      Else go read something.
 415                          */
 416                         break;
 417
 418                         /*
 419                          *      Read more value-pair's, unless we're
 420                          *      at EOF.  In that case, queue whatever
 421                          *      we have.
 422                          */
 423                 case STATE_READING:
 424                         if (data->fp && !feof(data->fp)) break;
 425                         data->state = STATE_QUEUED;
 426
 427                         /* FALL-THROUGH */
 428
 429                 case STATE_QUEUED:
 430                         goto alloc_packet;
 431
 432                         /*
 433                          *      Periodically check what's going on.
 434                          *      If the request is taking too long,
 435                          *      retry it.
 436                          */
 437                 case STATE_RUNNING:
 438                         if (time(NULL) < (data->running + data->retry_interval)) {
 439                                 return 0;
 440                         }
 441
 442                         DEBUG("No response to detail request.  Retrying");
 443                         data->state = STATE_NO_REPLY;
 444                         /* FALL-THROUGH */
 445
 446                         /*
 447                          *      If there's no reply, keep
 448                          *      retransmitting the current packet
 449                          *      forever.
 450                          */
 451                 case STATE_NO_REPLY:
 452                         data->state = STATE_QUEUED;
 453                         goto alloc_packet;
 454
 455                         /*
 456                          *      We have a reply.  Clean up the old
 457                          *      request, and go read another one.
 458                          */
 459                 case STATE_REPLIED:
 460                         pairfree(&data->vps);
 461                         data->state = STATE_HEADER;
 462                         goto do_header;
 463         }
 464
 465         tail = &data->vps;
 466         while (*tail) tail = &(*tail)->next;
 467
 468         /*
 469          *      Read a header, OR a value-pair.
 470          */
 471         while (fgets(buffer, sizeof(buffer), data->fp)) {
 472                 data->offset = ftell(data->fp); /* for statistics */
 473
 474                 /*
 475                  *      Badly formatted file: delete it.
 476                  *
 477                  *      FIXME: Maybe flag an error?
 478                  */
 479                 if (!strchr(buffer, '\n')) {
 480                         pairfree(&data->vps);
 481                         goto cleanup;
 482                 }
 483
 484                 /*
 485                  *      We're reading VP's, and got a blank line.
 486                  *      Queue the packet.
 487                  */
 488                 if ((data->state == STATE_READING) &&
 489                     (buffer[0] == '\n')) {
 490                         data->state = STATE_QUEUED;
 491                         break;
 492                 }
 493
 494                 /*
 495                  *      Look for date/time header, and read VP's if
 496                  *      found.  If not, keep reading lines until we
 497                  *      find one.
 498                  */
 499                 if (data->state == STATE_HEADER) {
 500                         int y;
 501
 502                         if (sscanf(buffer, "%*s %*s %*d %*d:%*d:%*d %d", &y)) {
 503                                 data->state = STATE_READING;
 504                         }
 505                         continue;
 506                 }
 507
 508                 /*
 509                  *      We have a full "attribute = value" line.
 510                  *      If it doesn't look reasonable, skip it.
 511                  *
 512                  *      FIXME: print an error for badly formatted attributes?
 513                  */
 514                 if (sscanf(buffer, "%255s %8s %1023s", key, op, value) != 3) {
 515                         DEBUG2("WARNING: Skipping badly formatted line %s",
 516                                buffer);
 517                         continue;
 518                 }
 519
 520                 /*
 521                  *      Should be =, :=, +=, ...
 522                  */
 523                 if (!strchr(op, '=')) continue;
 524
 525                 /*
 526                  *      Skip non-protocol attributes.
 527                  */
 528                 if (!strcasecmp(key, "Request-Authenticator")) continue;
 529
 530                 /*
 531                  *      Set the original client IP address, based on
 532                  *      what's in the detail file.
 533                  *
 534                  *      Hmm... we don't set the server IP address.
 535                  *      or port.  Oh well.
 536                  */
 537                 if (!strcasecmp(key, "Client-IP-Address")) {
 538                         data->client_ip.af = AF_INET;
 539                         ip_hton(value, AF_INET, &data->client_ip);
 540                         continue;
 541                 }
 542
 543                 /*
 544                  *      The original time at which we received the
 545                  *      packet.  We need this to properly calculate
 546                  *      Acct-Delay-Time.
 547                  */
 548                 if (!strcasecmp(key, "Timestamp")) {
 549                         data->timestamp = atoi(value);
 550
 551                         vp = paircreate(PW_PACKET_ORIGINAL_TIMESTAMP, 0,
 552                                         PW_TYPE_DATE);
 553                         if (vp) {
 554                                 vp->vp_date = (uint32_t) data->timestamp;
 555                                 *tail = vp;
 556                                 tail = &(vp->next);
 557                         }
 558                         continue;
 559                 }
 560
 561                 /*
 562                  *      Read one VP.
 563                  *
 564                  *      FIXME: do we want to check for non-protocol
 565                  *      attributes like radsqlrelay does?
 566                  */
 567                 vp = NULL;
 568                 if ((userparse(buffer, &vp) > 0) &&
 569                     (vp != NULL)) {
 570                         *tail = vp;
 571                         tail = &(vp->next);
 572                 }
 573         }
 574
 575         /*
 576          *      Some kind of error.
 577          *
 578          *      FIXME: Leave the file in-place, and warn the
 579          *      administrator?
 580          */
 581         if (ferror(data->fp)) goto cleanup;
 582
 583         data->tries = 0;
 584         data->packets++;
 585
 586         /*
 587          *      Process the packet.
 588          */
 589  alloc_packet:
 590         data->tries++;
 591
 592         /*
 593          *      The writer doesn't check that the record was
 594          *      completely written.  If the disk is full, this can
 595          *      result in a truncated record.  When that happens,
 596          *      treat it as EOF.
 597          */
 598         if (data->state != STATE_QUEUED) {
 599                 radlog(L_ERR, "Truncated record: treating it as EOF for detail file %s", data->filename_work);
 600                 goto cleanup;
 601         }
 602
 603         /*
 604          *      We're done reading the file, but we didn't read
 605          *      anything.  Clean up, and don't return anything.
 606          */
 607         if (!data->vps) {
 608                 data->state = STATE_HEADER;
 609                 if (!data->fp || feof(data->fp)) goto cleanup;
 610                 return 0;
 611         }
 612
 613         /*
 614          *      Allocate the packet.  If we fail, it's a serious
 615          *      problem.
 616          */
 617         packet = rad_alloc(1);
 618         if (!packet) {
 619                 radlog(L_ERR, "FATAL: Failed allocating memory for detail");
 620                 exit(1);
 621         }
 622
 623         memset(packet, 0, sizeof(*packet));
 624         packet->sockfd = -1;
 625         packet->src_ipaddr.af = AF_INET;
 626         packet->src_ipaddr.ipaddr.ip4addr.s_addr = htonl(INADDR_NONE);
 627         packet->code = PW_ACCOUNTING_REQUEST;
 628         gettimeofday(&packet->timestamp, NULL);
 629
 630         /*
 631          *      Remember where it came from, so that we don't
 632          *      proxy it to the place it came from...
 633          */
 634         if (data->client_ip.af != AF_UNSPEC) {
 635                 packet->src_ipaddr = data->client_ip;
 636         }
 637
 638         vp = pairfind(packet->vps, PW_PACKET_SRC_IP_ADDRESS, 0);
 639         if (vp) {
 640                 packet->src_ipaddr.af = AF_INET;
 641                 packet->src_ipaddr.ipaddr.ip4addr.s_addr = vp->vp_ipaddr;
 642         } else {
 643                 vp = pairfind(packet->vps, PW_PACKET_SRC_IPV6_ADDRESS, 0);
 644                 if (vp) {
 645                         packet->src_ipaddr.af = AF_INET6;
 646                         memcpy(&packet->src_ipaddr.ipaddr.ip6addr,
 647                                &vp->vp_ipv6addr, sizeof(vp->vp_ipv6addr));
 648                 }
 649         }
 650
 651         vp = pairfind(packet->vps, PW_PACKET_DST_IP_ADDRESS, 0);
 652         if (vp) {
 653                 packet->dst_ipaddr.af = AF_INET;
 654                 packet->dst_ipaddr.ipaddr.ip4addr.s_addr = vp->vp_ipaddr;
 655         } else {
 656                 vp = pairfind(packet->vps, PW_PACKET_DST_IPV6_ADDRESS, 0);
 657                 if (vp) {
 658                         packet->dst_ipaddr.af = AF_INET6;
 659                         memcpy(&packet->dst_ipaddr.ipaddr.ip6addr,
 660                                &vp->vp_ipv6addr, sizeof(vp->vp_ipv6addr));
 661                 }
 662         }
 663
 664         /*
 665          *      Generate packet ID, ports, IP via a counter.
 666          */
 667         packet->id = data->counter & 0xff;
 668         packet->src_port = 1024 + ((data->counter >> 8) & 0xff);
 669         packet->dst_port = 1024 + ((data->counter >> 16) & 0xff);
 670
 671         packet->dst_ipaddr.af = AF_INET;
 672         packet->dst_ipaddr.ipaddr.ip4addr.s_addr = htonl((INADDR_LOOPBACK & ~0xffffff) | ((data->counter >> 24) & 0xff));
 673
 674         /*
 675          *      If everything's OK, this is a waste of memory.
 676          *      Otherwise, it lets us re-send the original packet
 677          *      contents, unmolested.
 678          */
 679         packet->vps = paircopy(data->vps);
 680
 681         /*
 682          *      Prefer the Event-Timestamp in the packet, if it
 683          *      exists.  That is when the event occurred, whereas the
 684          *      "Timestamp" field is when we wrote the packet to the
 685          *      detail file, which could have been much later.
 686          */
 687         vp = pairfind(packet->vps, PW_EVENT_TIMESTAMP, 0);
 688         if (vp) {
 689                 data->timestamp = vp->vp_integer;
 690         }
 691
 692         /*
 693          *      Look for Acct-Delay-Time, and update
 694          *      based on Acct-Delay-Time += (time(NULL) - timestamp)
 695          */
 696         vp = pairfind(packet->vps, PW_ACCT_DELAY_TIME, 0);
 697         if (!vp) {
 698                 vp = paircreate(PW_ACCT_DELAY_TIME, 0, PW_TYPE_INTEGER);
 699                 rad_assert(vp != NULL);
 700                 pairadd(&packet->vps, vp);
 701         }
 702         if (data->timestamp != 0) {
 703                 vp->vp_integer += time(NULL) - data->timestamp;
 704         }
 705
 706         /*
 707          *      Set the transmission count.
 708          */
 709         vp = pairfind(packet->vps, PW_PACKET_TRANSMIT_COUNTER, 0);
 710         if (!vp) {
 711                 vp = paircreate(PW_PACKET_TRANSMIT_COUNTER, 0, PW_TYPE_INTEGER);
 712                 rad_assert(vp != NULL);
 713                 pairadd(&packet->vps, vp);
 714         }
 715         vp->vp_integer = data->tries;
 716
 717         if (debug_flag) {
 718                 fr_printf_log("detail_recv: Read packet from %s\n", data->filename_work);
 719                 for (vp = packet->vps; vp; vp = vp->next) {
 720                         debug_pair(vp);
 721                 }
 722         }
 723
 724         /*
 725          *      Don't bother doing limit checks, etc.
 726          */
 727         gettimeofday(&now, NULL);
 728         if (!request_insert(listener, packet, &data->detail_client,
 729                             rad_accounting, &now)) {
 730                 rad_free(&packet);
 731                 data->state = STATE_NO_REPLY;   /* try again later */
 732                 return 0;
 733         }
 734
 735         data->state = STATE_RUNNING;
 736         data->running = packet->timestamp.tv_sec;
 737
 738         return 1;
 739 }
 740
 741
 742 /*
 743  *      Free detail-specific stuff.
 744  */
 745 void detail_free(rad_listen_t *this)
 746 {
 747         listen_detail_t *data = this->data;
 748
 749         free(data->filename);
 750         data->filename = NULL;
 751         pairfree(&data->vps);
 752
 753         if (data->fp != NULL) {
 754                 fclose(data->fp);
 755                 data->fp = NULL;
 756         }
 757 }
 758
 759
 760 int detail_print(const rad_listen_t *this, char *buffer, size_t bufsize)
 761 {
 762         if (!this->server) {
 763                 return snprintf(buffer, bufsize, "%s",
 764                                 ((listen_detail_t *)(this->data))->filename);
 765         }
 766
 767         return snprintf(buffer, bufsize, "detail file %s as server %s",
 768                         ((listen_detail_t *)(this->data))->filename,
 769                         this->server);
 770 }
 771
 772 /*
 773  *      Overloaded to return delay times.
 774  */
 775 int detail_encode(rad_listen_t *this, UNUSED REQUEST *request)
 776 {
 777         listen_detail_t *data = this->data;
 778
 779         /*
 780          *      We haven't sent a packet... delay things a bit.
 781          */
 782         if (!data->signal) {
 783                 int delay = (data->poll_interval - 1) * USEC;
 784
 785                 /*
 786                  *      Add +/- 0.25s of jitter
 787                  */
 788                 delay += (USEC * 3) / 4;
 789                 delay += fr_rand() % (USEC / 2);
 790
 791                 DEBUG2("Detail listener %s state %s signalled %d waiting %d.%06d sec",
 792                        data->filename,
 793                        fr_int2str(state_names, data->state, "?"), data->signal,
 794                        (delay / USEC), delay % USEC);
 795
 796                 return delay;
 797         }
 798
 799         data->signal = 0;
 800
 801         DEBUG2("Detail listener %s state %s signalled %d waiting %d.%06d sec",
 802                data->filename, fr_int2str(state_names, data->state, "?"),
 803                data->signal,
 804                data->delay_time / USEC,
 805                data->delay_time % USEC);
 806
 807         return data->delay_time;
 808 }
 809
 810
 811 /*
 812  *      Overloaded to return "should we fix delay times"
 813  */
 814 int detail_decode(rad_listen_t *this, UNUSED REQUEST *request)
 815 {
 816         listen_detail_t *data = this->data;
 817
 818         return data->signal;
 819 }
 820
 821
 822 static const CONF_PARSER detail_config[] = {
 823         { "filename",   PW_TYPE_STRING_PTR,
 824           offsetof(listen_detail_t, filename), NULL,  NULL },
 825         { "load_factor",   PW_TYPE_INTEGER,
 826           offsetof(listen_detail_t, load_factor), NULL, Stringify(10)},
 827         { "poll_interval",   PW_TYPE_INTEGER,
 828           offsetof(listen_detail_t, poll_interval), NULL, Stringify(1)},
 829         { "retry_interval",   PW_TYPE_INTEGER,
 830           offsetof(listen_detail_t, retry_interval), NULL, Stringify(30)},
 831         { "one_shot",   PW_TYPE_BOOLEAN,
 832           offsetof(listen_detail_t, one_shot), NULL, NULL},
 833         { "max_outstanding",   PW_TYPE_INTEGER,
 834           offsetof(listen_detail_t, load_factor), NULL, NULL},
 835
 836         { NULL, -1, 0, NULL, NULL }             /* end the list */
 837 };
 838
 839 extern int check_config;
 840
 841 /*
 842  *      Parse a detail section.
 843  */
 844 int detail_parse(CONF_SECTION *cs, rad_listen_t *this)
 845 {
 846         int             rcode;
 847         listen_detail_t *data;
 848         RADCLIENT       *client;
 849         char buffer[2048];
 850
 851         if (check_config) return 0;
 852
 853         if (!this->data) {
 854                 this->data = rad_malloc(sizeof(*data));
 855                 memset(this->data, 0, sizeof(*data));
 856         }
 857
 858         data = this->data;
 859
 860         rcode = cf_section_parse(cs, data, detail_config);
 861         if (rcode < 0) {
 862                 cf_log_err(cf_sectiontoitem(cs), "Failed parsing listen section");
 863                 return -1;
 864         }
 865
 866         if (!data->filename) {
 867                 cf_log_err(cf_sectiontoitem(cs), "No detail file specified in listen section");
 868                 return -1;
 869         }
 870
 871         if ((data->load_factor < 1) || (data->load_factor > 100)) {
 872                 cf_log_err(cf_sectiontoitem(cs), "Load factor must be between 1 and 100");
 873                 return -1;
 874         }
 875
 876         if ((data->poll_interval < 1) || (data->poll_interval > 20)) {
 877                 cf_log_err(cf_sectiontoitem(cs), "poll_interval must be between 1 and 20");
 878                 return -1;
 879         }
 880
 881         if (data->max_outstanding == 0) data->max_outstanding = 1;
 882
 883         /*
 884          *      If the filename is a glob, use "detail.work" as the
 885          *      work file name.
 886          */
 887         if ((strchr(data->filename, '*') != NULL) ||
 888             (strchr(data->filename, '[') != NULL)) {
 889                 char *p;
 890
 891 #ifndef HAVE_GLOB_H
 892                 radlog(L_INFO, "WARNING: Detail file \"%s\" appears to use file globbing, but it is not supported on this system.", data->filename);
 893 #endif
 894                 strlcpy(buffer, data->filename, sizeof(buffer));
 895                 p = strrchr(buffer, FR_DIR_SEP);
 896                 if (p) {
 897                         p[1] = '\0';
 898                 } else {
 899                         buffer[0] = '\0';
 900                 }
 901                 strlcat(buffer, "detail.work",
 902                         sizeof(buffer) - strlen(buffer));
 903
 904         } else {
 905                 snprintf(buffer, sizeof(buffer), "%s.work", data->filename);
 906         }
 907
 908         free(data->filename_work);
 909         data->filename_work = strdup(buffer); /* FIXME: leaked */
 910
 911         data->vps = NULL;
 912         data->fp = NULL;
 913         data->state = STATE_UNOPENED;
 914         data->delay_time = data->poll_interval * USEC;
 915         data->signal = 1;
 916
 917         /*
 918          *      Initialize the fake client.
 919          */
 920         client = &data->detail_client;
 921         memset(client, 0, sizeof(*client));
 922         client->ipaddr.af = AF_INET;
 923         client->ipaddr.ipaddr.ip4addr.s_addr = INADDR_NONE;
 924         client->prefix = 0;
 925         client->longname = client->shortname = data->filename;
 926         client->secret = client->shortname;
 927         client->nastype = strdup("none");
 928
 929         return 0;
 930 }
 931 #endif