keyd.c

   1 /*
   2  * keyd.c - key retrieval daemon
   3  *
   4  * Copyright 2004,2011 Jonathan McDowell <noodles@earth.li>
   5  *
   6  * This program is free software: you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc., 51
  17  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <getopt.h>
  23 #include <signal.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <sys/select.h>
  28 #include <sys/socket.h>
  29 #include <sys/types.h>
  30 #include <sys/un.h>
  31 #include <time.h>
  32 #include <unistd.h>
  33
  34 #include "config.h"
  35
  36 #ifdef HAVE_SYSTEMD
  37 #include <systemd/sd-daemon.h>
  38 #endif
  39
  40 #include "charfuncs.h"
  41 #include "cleanup.h"
  42 #include "keyd.h"
  43 #include "keydb.h"
  44 #include "keyid.h"
  45 #include "keystructs.h"
  46 #include "log.h"
  47 #include "mem.h"
  48 #include "onak-conf.h"
  49 #include "parsekey.h"
  50 #include "version.h"
  51
  52 /* Maximum number of clients we're prepared to accept at once */
  53 #define MAX_CLIENTS 16
  54
  55 #ifdef HAVE_SYSTEMD
  56 static bool using_socket_activation = false;
  57 #endif
  58
  59 static struct keyd_stats *stats;
  60
  61 static void daemonize(void)
  62 {
  63         pid_t pid;
  64
  65         pid = fork();
  66
  67         if (pid < 0) {
  68                 logthing(LOGTHING_CRITICAL,
  69                         "Failed to fork into background: %d (%s)",
  70                         errno,
  71                         strerror(errno));
  72                 exit(EXIT_FAILURE);
  73         } else if (pid > 0) {
  74                 logthing(LOGTHING_INFO, "Backgrounded as pid %d.", pid);
  75                 exit(EXIT_SUCCESS);
  76         }
  77
  78         if (setsid() == -1) {
  79                 logthing(LOGTHING_CRITICAL,
  80                         "Couldn't set process group leader: %d (%s)",
  81                         errno,
  82                         strerror(errno));
  83                 exit(EXIT_FAILURE);
  84         }
  85
  86         if (!freopen("/dev/null", "r", stdin)) {
  87                 logthing(LOGTHING_CRITICAL,
  88                         "Couldn't reopen stdin to NULL: %d (%s)",
  89                         errno,
  90                         strerror(errno));
  91                 exit(EXIT_FAILURE);
  92         }
  93         if (!freopen("/dev/null", "w", stdout)) {
  94                 logthing(LOGTHING_CRITICAL,
  95                         "Couldn't reopen stdout to NULL: %d (%s)",
  96                         errno,
  97                         strerror(errno));
  98                 exit(EXIT_FAILURE);
  99         }
 100         if (!freopen("/dev/null", "w", stderr)) {
 101                 logthing(LOGTHING_CRITICAL,
 102                         "Couldn't reopen stderr to NULL: %d (%s)",
 103                         errno,
 104                         strerror(errno));
 105                 exit(EXIT_FAILURE);
 106         }
 107
 108         return;
 109 }
 110
 111 static bool keyd_write_key(int fd, struct openpgp_publickey *key)
 112 {
 113         struct openpgp_packet_list *packets = NULL;
 114         struct openpgp_packet_list *list_end = NULL;
 115         struct buffer_ctx           storebuf;
 116         ssize_t written;
 117         bool    ok = true;
 118
 119         storebuf.offset = 0;
 120         storebuf.size = 8192;
 121         storebuf.buffer = malloc(8192);
 122
 123         flatten_publickey(key,
 124                                 &packets,
 125                                 &list_end);
 126         write_openpgp_stream(buffer_putchar,
 127                                 &storebuf,
 128                                 packets);
 129         logthing(LOGTHING_TRACE,
 130                                 "Sending %d bytes.",
 131                                 storebuf.offset);
 132         written = write(fd, &storebuf.offset,
 133                         sizeof(storebuf.offset));
 134         if (written == 0) {
 135                 ok = false;
 136         } else {
 137                 written = write(fd, storebuf.buffer,
 138                         storebuf.offset);
 139                 if (written != storebuf.offset) {
 140                         ok = false;
 141                 }
 142         }
 143
 144         free(storebuf.buffer);
 145         storebuf.buffer = NULL;
 146         storebuf.size = storebuf.offset = 0;
 147         free_packet_list(packets);
 148         packets = list_end = NULL;
 149
 150         return (ok);
 151 }
 152
 153 static bool keyd_write_reply(int fd, enum keyd_reply _reply)
 154 {
 155         uint32_t reply = _reply;
 156         ssize_t written;
 157         bool ok = true;
 158
 159         written = write(fd, &reply, sizeof(reply));
 160         if (written != sizeof(reply)) {
 161                 ok = false;
 162         }
 163
 164         return (ok);
 165 }
 166
 167 static bool keyd_write_size(int fd, size_t size)
 168 {
 169         ssize_t written;
 170         bool ok = true;
 171
 172         written = write(fd, &size, sizeof(size));
 173         if (written != sizeof(size)) {
 174                 ok = false;
 175         }
 176
 177         return (ok);
 178 }
 179
 180 static void iteratefunc(void *ctx, struct openpgp_publickey *key)
 181 {
 182         int      *fd = (int *) ctx;
 183         uint64_t  keyid;
 184
 185         if (key != NULL) {
 186                 get_keyid(key, &keyid);
 187                 logthing(LOGTHING_TRACE,
 188                                 "Iterating over 0x%016" PRIX64 ".",
 189                                 keyid);
 190
 191                 keyd_write_key(*fd, key);
 192         }
 193
 194         return;
 195 }
 196
 197 static int sock_init(const char *sockname)
 198 {
 199         struct sockaddr_un sock;
 200         int                fd = -1;
 201         int                ret = -1;
 202 #ifdef HAVE_SYSTEMD
 203         int                n;
 204
 205         n = sd_listen_fds(0);
 206         if (n > 1) {
 207                 logthing(LOGTHING_ERROR,
 208                         "Too many file descriptors received from systemd.");
 209         } else if (n == 1) {
 210                 fd = SD_LISTEN_FDS_START + 0;
 211                 if (sd_is_socket_unix(fd, SOCK_STREAM, 1, NULL, 0) <= 0) {
 212                         logthing(LOGTHING_ERROR,
 213                                 "systemd passed an invalid socket.");
 214                         fd = -1;
 215                 }
 216                 using_socket_activation = true;
 217         } else {
 218 #endif
 219                 fd = socket(PF_UNIX, SOCK_STREAM, 0);
 220                 if (fd != -1) {
 221                         ret = fcntl(fd, F_SETFD, FD_CLOEXEC);
 222                 }
 223
 224                 if (ret != -1) {
 225                         sock.sun_family = AF_UNIX;
 226                         strncpy(sock.sun_path, sockname,
 227                                         sizeof(sock.sun_path) - 1);
 228                         unlink(sockname);
 229                         ret = bind(fd, (struct sockaddr *) &sock,
 230                                         sizeof(sock));
 231                 }
 232
 233                 if (ret != -1) {
 234                         ret = listen(fd, 5);
 235                         if (ret == -1) {
 236                                 close(fd);
 237                                 fd = -1;
 238                         }
 239                 }
 240 #ifdef HAVE_SYSTEMD
 241         }
 242 #endif
 243
 244         return fd;
 245 }
 246
 247 static int sock_do(struct onak_dbctx *dbctx, int fd)
 248 {
 249         uint32_t cmd = KEYD_CMD_UNKNOWN;
 250         ssize_t  bytes = 0;
 251         ssize_t  count = 0;
 252         int      ret = 0;
 253         uint64_t keyid = 0;
 254         char     *search = NULL;
 255         struct openpgp_publickey *key = NULL;
 256         struct openpgp_packet_list *packets = NULL;
 257         struct buffer_ctx storebuf;
 258         struct skshash hash;
 259         struct openpgp_fingerprint fingerprint;
 260
 261         /*
 262          * Get the command from the client.
 263          */
 264         bytes = read(fd, &cmd, sizeof(cmd));
 265
 266         logthing(LOGTHING_DEBUG, "Read %d bytes, command: %d", bytes, cmd);
 267
 268         if (bytes != sizeof(cmd)) {
 269                 ret = 1;
 270         }
 271
 272         if (ret == 0) {
 273                 if (cmd < KEYD_CMD_LAST) {
 274                         stats->command_stats[cmd]++;
 275                 } else {
 276                         stats->command_stats[KEYD_CMD_UNKNOWN]++;
 277                 }
 278                 switch (cmd) {
 279                 case KEYD_CMD_VERSION:
 280                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 281                                 ret = 1;
 282                         }
 283                         if (ret == 0) {
 284                                 cmd = sizeof(keyd_version);
 285                                 bytes = write(fd, &cmd, sizeof(cmd));
 286                                 if (bytes != sizeof(cmd)) {
 287                                         ret = 1;
 288                                 }
 289                         }
 290                         if (ret == 0) {
 291                                 bytes = write(fd, &keyd_version,
 292                                         sizeof(keyd_version));
 293                                 if (bytes != sizeof(keyd_version)) {
 294                                         ret = 1;
 295                                 }
 296                         }
 297                         break;
 298                 case KEYD_CMD_GET_ID:
 299                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 300                                 ret = 1;
 301                         }
 302                         if (ret == 0) {
 303                                 bytes = read(fd, &keyid, sizeof(keyid));
 304                                 if (bytes != sizeof(keyid)) {
 305                                         ret = 1;
 306                                 }
 307                         }
 308                         if (ret == 0) {
 309                                 logthing(LOGTHING_INFO,
 310                                                 "Fetching 0x%" PRIX64
 311                                                 ", result: %d",
 312                                                 keyid,
 313                                                 dbctx->fetch_key_id(dbctx,
 314                                                         keyid,
 315                                                         &key, false));
 316                                 if (key != NULL) {
 317                                         keyd_write_key(fd, key);
 318                                         free_publickey(key);
 319                                         key = NULL;
 320                                 } else {
 321                                         if (!keyd_write_size(fd, 0)) {
 322                                                 ret = 1;
 323                                         }
 324                                 }
 325                         }
 326                         break;
 327                 case KEYD_CMD_GET_FP:
 328                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 329                                 ret = 1;
 330                         }
 331                         if (ret == 0) {
 332                                 if ((read(fd, &bytes, 1) != 1) ||
 333                                                 (bytes > MAX_FINGERPRINT_LEN)) {
 334                                         ret = 1;
 335                                 } else {
 336                                         fingerprint.length = bytes;
 337                                         bytes = read(fd, fingerprint.fp,
 338                                                 fingerprint.length);
 339                                         if (bytes != fingerprint.length) {
 340                                                 ret = 1;
 341                                         }
 342                                 }
 343                         }
 344                         if (ret == 0) {
 345                                 logthing(LOGTHING_INFO,
 346                                                 "Fetching by fingerprint"
 347                                                 ", result: %d",
 348                                                 dbctx->fetch_key_fp(dbctx,
 349                                                         &fingerprint,
 350                                                         &key, false));
 351                                 if (key != NULL) {
 352                                         keyd_write_key(fd, key);
 353                                         free_publickey(key);
 354                                         key = NULL;
 355                                 } else {
 356                                         if (!keyd_write_size(fd, 0)) {
 357                                                 ret = 1;
 358                                         }
 359                                 }
 360                         }
 361                         break;
 362
 363                 case KEYD_CMD_GET_TEXT:
 364                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 365                                 ret = 1;
 366                         }
 367                         if (ret == 0) {
 368                                 bytes = read(fd, &count, sizeof(count));
 369                                 if (bytes != sizeof(count)) {
 370                                         ret = 1;
 371                                 }
 372                         }
 373                         if (ret == 0) {
 374                                 search = malloc(count+1);
 375                                 bytes = read(fd, search, count);
 376                                 if (bytes != count) {
 377                                         ret = 1;
 378                                         free(search);
 379                                         break;
 380                                 }
 381                                 search[count] = 0;
 382                                 logthing(LOGTHING_INFO,
 383                                                 "Fetching %s, result: %d",
 384                                                 search,
 385                                                 dbctx->fetch_key_text(dbctx,
 386                                                         search, &key));
 387                                 if (key != NULL) {
 388                                         keyd_write_key(fd, key);
 389                                         free_publickey(key);
 390                                         key = NULL;
 391                                 } else {
 392                                         if (!keyd_write_size(fd, 0)) {
 393                                                 ret = 1;
 394                                         }
 395                                 }
 396                                 free(search);
 397                         }
 398                         break;
 399                 case KEYD_CMD_STORE:
 400                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 401                                 ret = 1;
 402                         }
 403                         if (ret == 0) {
 404                                 bytes = read(fd, &storebuf.size,
 405                                         sizeof(storebuf.size));
 406                                 logthing(LOGTHING_TRACE, "Reading %d bytes.",
 407                                         storebuf.size);
 408                                 if (bytes != sizeof(storebuf.size)) {
 409                                         ret = 1;
 410                                 }
 411                         }
 412                         if (ret == 0 && storebuf.size > 0) {
 413                                 storebuf.buffer = malloc(storebuf.size);
 414                                 storebuf.offset = 0;
 415                                 bytes = count = 0;
 416                                 while (bytes >= 0 && count < storebuf.size) {
 417                                         bytes = read(fd,
 418                                                 &storebuf.buffer[count],
 419                                                 storebuf.size - count);
 420                                         logthing(LOGTHING_TRACE,
 421                                                         "Read %d bytes.",
 422                                                         bytes);
 423                                         count += bytes;
 424                                 }
 425                                 read_openpgp_stream(buffer_fetchchar,
 426                                                 &storebuf,
 427                                                 &packets,
 428                                                 0);
 429                                 parse_keys(packets, &key);
 430                                 dbctx->store_key(dbctx, key, false, false);
 431                                 free_packet_list(packets);
 432                                 packets = NULL;
 433                                 free_publickey(key);
 434                                 key = NULL;
 435                                 free(storebuf.buffer);
 436                                 storebuf.buffer = NULL;
 437                                 storebuf.size = storebuf.offset = 0;
 438                         }
 439                         break;
 440                 case KEYD_CMD_DELETE:
 441                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 442                                 ret = 1;
 443                         }
 444                         if (ret == 0) {
 445                                 bytes = read(fd, &keyid, sizeof(keyid));
 446                                 if (bytes != sizeof(keyid)) {
 447                                         ret = 1;
 448                                 }
 449                         }
 450                         if (ret == 0) {
 451                                 logthing(LOGTHING_INFO,
 452                                                 "Deleting 0x%" PRIX64
 453                                                 ", result: %d",
 454                                                 keyid,
 455                                                 dbctx->delete_key(dbctx,
 456                                                         keyid, false));
 457                         }
 458                         break;
 459                 case KEYD_CMD_GETFULLKEYID:
 460                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 461                                 ret = 1;
 462                         }
 463                         if (ret == 0) {
 464                                 bytes = read(fd, &keyid, sizeof(keyid));
 465                                 if (bytes != sizeof(keyid)) {
 466                                         ret = 1;
 467                                 }
 468                         }
 469                         if (ret == 0) {
 470                                 keyid = dbctx->getfullkeyid(dbctx, keyid);
 471                                 cmd = sizeof(keyid);
 472                                 bytes = write(fd, &cmd, sizeof(cmd));
 473                                 if (bytes != sizeof(cmd)) {
 474                                         ret = 1;
 475                                 }
 476                         }
 477                         if (ret == 0) {
 478                                 bytes = write(fd, &keyid, sizeof(keyid));
 479                                 if (bytes != sizeof(keyid)) {
 480                                         ret = 1;
 481                                 }
 482                         }
 483                         break;
 484                 case KEYD_CMD_KEYITER:
 485                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 486                                 ret = 1;
 487                         }
 488                         if (ret == 0) {
 489                                 dbctx->iterate_keys(dbctx, iteratefunc,
 490                                         &fd);
 491                                 if (!keyd_write_size(fd, 0)) {
 492                                         ret = 1;
 493                                 }
 494                         }
 495                         break;
 496                 case KEYD_CMD_CLOSE:
 497                         /* We're going to close the FD even if this fails */
 498                         (void) keyd_write_reply(fd, KEYD_REPLY_OK);
 499                         ret = 1;
 500                         break;
 501                 case KEYD_CMD_QUIT:
 502                         /* We're going to quit even if this fails */
 503                         (void) keyd_write_reply(fd, KEYD_REPLY_OK);
 504                         logthing(LOGTHING_NOTICE,
 505                                 "Exiting due to quit request.");
 506                         ret = 1;
 507                         trytocleanup();
 508                         break;
 509                 case KEYD_CMD_STATS:
 510                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 511                                 ret = 1;
 512                         }
 513                         if (ret == 0) {
 514                                 cmd = sizeof(*stats);
 515                                 bytes = write(fd, &cmd, sizeof(cmd));
 516                                 if (bytes != sizeof(cmd)) {
 517                                         ret = 1;
 518                                 }
 519                         }
 520                         if (ret == 0) {
 521                                 bytes = write(fd, stats, sizeof(*stats));
 522                                 if (bytes != sizeof(*stats)) {
 523                                         ret = 1;
 524                                 }
 525                         }
 526                         break;
 527                 case KEYD_CMD_GET_SKSHASH:
 528                         if (!keyd_write_reply(fd, KEYD_REPLY_OK)) {
 529                                 ret = 1;
 530                         }
 531                         if (ret == 0) {
 532                                 bytes = read(fd, hash.hash, sizeof(hash.hash));
 533                                 if (bytes != sizeof(hash.hash)) {
 534                                         ret = 1;
 535                                 }
 536                         }
 537                         if (ret == 0) {
 538                                 logthing(LOGTHING_INFO,
 539                                                 "Fetching by hash"
 540                                                 ", result: %d",
 541                                                 dbctx->fetch_key_skshash(dbctx,
 542                                                         &hash, &key));
 543                                 if (key != NULL) {
 544                                         keyd_write_key(fd, key);
 545                                         free_publickey(key);
 546                                         key = NULL;
 547                                 } else {
 548                                         if (!keyd_write_size(fd, 0)) {
 549                                                 ret = 1;
 550                                         }
 551                                 }
 552                         }
 553                         break;
 554
 555                 default:
 556                         logthing(LOGTHING_ERROR, "Got unknown command: %d",
 557                                         cmd);
 558                         if (!keyd_write_reply(fd, KEYD_REPLY_UNKNOWN_CMD)) {
 559                                 ret = 1;
 560                         }
 561                 }
 562         }
 563
 564         return(ret);
 565 }
 566
 567 static int sock_close(int fd)
 568 {
 569         shutdown(fd, SHUT_RDWR);
 570         return close(fd);
 571 }
 572
 573 static int sock_accept(int fd)
 574 {
 575         struct sockaddr_un sock;
 576         socklen_t          socklen;
 577         int    srv = -1;
 578         int    ret = -1;
 579
 580         socklen = sizeof(sock);
 581         srv = accept(fd, (struct sockaddr *) &sock, &socklen);
 582         if (srv != -1) {
 583                 ret = fcntl(srv, F_SETFD, FD_CLOEXEC);
 584         }
 585
 586         if (ret != -1) {
 587                 stats->connects++;
 588         }
 589
 590         return (srv);
 591 }
 592
 593 static void usage(void)
 594 {
 595         puts("keyd " ONAK_VERSION " - backend key serving daemon for the "
 596                 "onak PGP keyserver.\n");
 597         puts("Usage:\n");
 598         puts("\tkeyd [options]\n");
 599         puts("\tOptions:\n:");
 600         puts("-c <file> - use <file> as the config file");
 601         puts("-f        - run in the foreground");
 602         puts("-h        - show this help text");
 603         exit(EXIT_FAILURE);
 604 }
 605
 606 int main(int argc, char *argv[])
 607 {
 608         int fd = -1, maxfd, i, clients[MAX_CLIENTS];
 609         fd_set rfds;
 610         char sockname[1024];
 611         char *configfile = NULL;
 612         bool foreground = false;
 613         int optchar;
 614         struct onak_dbctx *dbctx;
 615
 616         while ((optchar = getopt(argc, argv, "c:fh")) != -1 ) {
 617                 switch (optchar) {
 618                 case 'c':
 619                         if (configfile != NULL) {
 620                                 free(configfile);
 621                         }
 622                         configfile = strdup(optarg);
 623                         break;
 624                 case 'f':
 625                         foreground = true;
 626                         break;
 627                 case 'h':
 628                 default:
 629                         usage();
 630                         break;
 631                 }
 632         }
 633
 634         readconfig(configfile);
 635         free(configfile);
 636         configfile = NULL;
 637         initlogthing("keyd", config.logfile);
 638         config.use_keyd = false;
 639
 640         if (!foreground) {
 641                 daemonize();
 642         }
 643
 644         catchsignals();
 645         signal(SIGPIPE, SIG_IGN);
 646
 647
 648         stats = calloc(1, sizeof(*stats));
 649         if (!stats) {
 650                 logthing(LOGTHING_ERROR,
 651                         "Couldn't allocate memory for stats structure.");
 652                 exit(EXIT_FAILURE);
 653         }
 654         stats->started = time(NULL);
 655
 656         snprintf(sockname, 1023, "%s/%s", config.sock_dir, KEYD_SOCKET);
 657         fd = sock_init(sockname);
 658
 659         if (fd != -1) {
 660                 FD_ZERO(&rfds);
 661                 FD_SET(fd, &rfds);
 662                 maxfd = fd;
 663                 memset(clients, -1, sizeof (clients));
 664
 665                 dbctx = config.dbinit(config.backend, false);
 666
 667                 logthing(LOGTHING_NOTICE, "Accepting connections.");
 668                 while (!cleanup() && select(maxfd + 1, &rfds, NULL, NULL, NULL) != -1) {
 669                         /*
 670                          * Deal with existing clients first; if we're at our
 671                          * connection limit then processing them might free
 672                          * things up and let us accept the next client below.
 673                          */
 674                         for (i = 0; i < MAX_CLIENTS; i++) {
 675                                 if (clients[i] != -1 &&
 676                                                 FD_ISSET(clients[i], &rfds)) {
 677                                         logthing(LOGTHING_DEBUG,
 678                                                 "Handling connection for client %d.", i);
 679                                         if (sock_do(dbctx, clients[i])) {
 680                                                 sock_close(clients[i]);
 681                                                 clients[i] = -1;
 682                                                 logthing(LOGTHING_DEBUG,
 683                                                         "Closed connection for client %d.", i);
 684                                         }
 685                                 }
 686                         }
 687                         /*
 688                          * Check if we have a new incoming connection to accept.
 689                          */
 690                         if (FD_ISSET(fd, &rfds)) {
 691                                 for (i = 0; i < MAX_CLIENTS; i++) {
 692                                         if (clients[i] == -1) {
 693                                                 break;
 694                                         }
 695                                 }
 696                                 if (i < MAX_CLIENTS) {
 697                                         logthing(LOGTHING_INFO,
 698                                                 "Accepted connection %d.", i);
 699                                         clients[i] = sock_accept(fd);
 700                                 }
 701                         }
 702                         FD_ZERO(&rfds);
 703                         FD_SET(fd, &rfds);
 704                         maxfd = fd;
 705                         for (i = 0; i < MAX_CLIENTS; i++) {
 706                                 if (clients[i] != -1) {
 707                                         FD_SET(clients[i], &rfds);
 708                                         maxfd = (maxfd > clients[i]) ?
 709                                                         maxfd : clients[i];
 710                                 }
 711                         }
 712                 }
 713                 dbctx->cleanupdb(dbctx);
 714 #ifdef HAVE_SYSTEMD
 715                 if (!using_socket_activation) {
 716 #endif
 717                         sock_close(fd);
 718                         unlink(sockname);
 719 #ifdef HAVE_SYSTEMD
 720                 }
 721 #endif
 722         }
 723
 724         free(stats);
 725
 726         cleanuplogthing();
 727         cleanupconfig();
 728
 729         return(EXIT_SUCCESS);
 730 }