citadel/sysdep.c

   1 /*
   2  * Citadel "system dependent" stuff.
   3  *
   4  * Here's where we (hopefully) have most parts of the Citadel server that
   5  * would need to be altered to run the server in a non-POSIX environment.
   6  *
   7  * If we ever port to a different platform and either have multiple
   8  * variants of this file or simply load it up with #ifdefs.
   9  *
  10  * Copyright (c) 1987-2011 by the citadel.org team
  11  *
  12  * This program is open source software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License, version 3.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  */
  20
  21 #include "sysdep.h"
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <stdio.h>
  25 #include <fcntl.h>
  26 #include <ctype.h>
  27 #include <signal.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <sys/wait.h>
  31 #include <sys/socket.h>
  32 #include <syslog.h>
  33 #include <sys/syslog.h>
  34
  35 #if TIME_WITH_SYS_TIME
  36 # include <sys/time.h>
  37 # include <time.h>
  38 #else
  39 # if HAVE_SYS_TIME_H
  40 #  include <sys/time.h>
  41 # else
  42 #  include <time.h>
  43 # endif
  44 #endif
  45
  46 #include <limits.h>
  47 #include <sys/resource.h>
  48 #include <netinet/in.h>
  49 #include <netinet/tcp.h>
  50 #include <arpa/inet.h>
  51 #include <netdb.h>
  52 #include <sys/un.h>
  53 #include <string.h>
  54 #include <pwd.h>
  55 #include <errno.h>
  56 #include <stdarg.h>
  57 #include <grp.h>
  58 #define SHOW_ME_VAPPEND_PRINTF
  59 #include <libcitadel.h>
  60 #include "citadel.h"
  61 #include "server.h"
  62 #include "sysdep_decls.h"
  63 #include "citserver.h"
  64 #include "support.h"
  65 #include "config.h"
  66 #include "database.h"
  67 #include "housekeeping.h"
  68 #include "modules/crypto/serv_crypto.h" /* Needed for init_ssl, client_write_ssl, client_read_ssl, destruct_ssl */
  69 #include "ecrash.h"
  70 #include "context.h"
  71
  72 #ifdef HAVE_SYS_SELECT_H
  73 #include <sys/select.h>
  74 #endif
  75
  76 #ifndef HAVE_SNPRINTF
  77 #include "snprintf.h"
  78 #endif
  79
  80 #include "ctdl_module.h"
  81 #include "threads.h"
  82 #include "user_ops.h"
  83 #include "control.h"
  84
  85
  86 /*
  87  * Signal handler to shut down the server.
  88  */
  89
  90 volatile int exit_signal = 0;
  91 volatile int shutdown_and_halt = 0;
  92 volatile int restart_server = 0;
  93 volatile int running_as_daemon = 0;
  94
  95 static RETSIGTYPE signal_cleanup(int signum) {
  96         syslog(LOG_DEBUG, "Caught signal %d; shutting down.", signum);
  97         exit_signal = signum;
  98         server_shutting_down = 1;
  99 }
 100
 101 static RETSIGTYPE signal_exit(int signum) {
 102         exit(1);
 103 }
 104
 105
 106
 107 /*
 108  * Some initialization stuff...
 109  */
 110 void init_sysdep(void) {
 111         sigset_t set;
 112
 113         /* Avoid vulnerabilities related to FD_SETSIZE if we can. */
 114 #ifdef FD_SETSIZE
 115 #ifdef RLIMIT_NOFILE
 116         struct rlimit rl;
 117         getrlimit(RLIMIT_NOFILE, &rl);
 118         rl.rlim_cur = FD_SETSIZE;
 119         rl.rlim_max = FD_SETSIZE;
 120         setrlimit(RLIMIT_NOFILE, &rl);
 121 #endif
 122 #endif
 123
 124         /* If we've got OpenSSL, we're going to use it. */
 125 #ifdef HAVE_OPENSSL
 126         init_ssl();
 127 #endif
 128
 129         /*
 130          * Set up a place to put thread-specific data.
 131          * We only need a single pointer per thread - it points to the
 132          * CitContext structure (in the ContextList linked list) of the
 133          * session to which the calling thread is currently bound.
 134          */
 135         if (pthread_key_create(&MyConKey, NULL) != 0) {
 136                 syslog(LOG_CRIT, "Can't create TSD key: %s", strerror(errno));
 137         }
 138
 139         /*
 140          * Interript, hangup, and terminate signals should cause the server
 141          * to gracefully clean up and shut down.
 142          */
 143         sigemptyset(&set);
 144         sigaddset(&set, SIGINT);
 145         sigaddset(&set, SIGHUP);
 146         sigaddset(&set, SIGTERM);
 147         sigprocmask(SIG_UNBLOCK, &set, NULL);
 148
 149         signal(SIGINT, signal_cleanup);
 150         signal(SIGHUP, signal_cleanup);
 151         signal(SIGTERM, signal_cleanup);
 152         signal(SIGUSR2, signal_exit);
 153
 154         /*
 155          * Do not shut down the server on broken pipe signals, otherwise the
 156          * whole Citadel service would come down whenever a single client
 157          * socket breaks.
 158          */
 159         signal(SIGPIPE, SIG_IGN);
 160 }
 161
 162
 163 /*
 164  * This is a generic function to set up a master socket for listening on
 165  * a TCP port.  The server shuts down if the bind fails.  (IPv4/IPv6 version)
 166  *
 167  * ip_addr      IP address to bind
 168  * port_number  port number to bind
 169  * queue_len    number of incoming connections to allow in the queue
 170  */
 171 int ctdl_tcp_server(char *ip_addr, int port_number, int queue_len, char *errormessage)
 172 {
 173         struct protoent *p;
 174         struct sockaddr_in6 sin6;
 175         struct sockaddr_in sin4;
 176         int s, i, b;
 177         int ip_version = 6;
 178
 179         memset(&sin6, 0, sizeof(sin6));
 180         memset(&sin4, 0, sizeof(sin4));
 181         sin6.sin6_family = AF_INET6;
 182         sin4.sin_family = AF_INET;
 183
 184         if (    (ip_addr == NULL)                                                       /* any IPv6 */
 185                 || (IsEmptyStr(ip_addr))
 186                 || (!strcmp(ip_addr, "*"))
 187         ) {
 188                 ip_version = 6;
 189                 sin6.sin6_addr = in6addr_any;
 190         }
 191         else if (!strcmp(ip_addr, "0.0.0.0"))                                           /* any IPv4 */
 192         {
 193                 ip_version = 4;
 194                 sin4.sin_addr.s_addr = INADDR_ANY;
 195         }
 196         else if ((strchr(ip_addr, '.')) && (!strchr(ip_addr, ':')))                     /* specific IPv4 */
 197         {
 198                 ip_version = 4;
 199                 if (inet_pton(AF_INET, ip_addr, &sin4.sin_addr) <= 0) {
 200                         snprintf(errormessage, SIZ,
 201                                  "Error binding to [%s] : %s", ip_addr, strerror(errno)
 202                         );
 203                         syslog(LOG_ALERT, "%s", errormessage);
 204                         return (-1);
 205                 }
 206         }
 207         else                                                                            /* specific IPv6 */
 208         {
 209                 ip_version = 6;
 210                 if (inet_pton(AF_INET6, ip_addr, &sin6.sin6_addr) <= 0) {
 211                         snprintf(errormessage, SIZ,
 212                                  "Error binding to [%s] : %s", ip_addr, strerror(errno)
 213                         );
 214                         syslog(LOG_ALERT, "%s", errormessage);
 215                         return (-1);
 216                 }
 217         }
 218
 219         if (port_number == 0) {
 220                 snprintf(errormessage, SIZ, "Can't start: no port number specified.");
 221                 syslog(LOG_ALERT, "%s", errormessage);
 222                 return (-1);
 223         }
 224         sin6.sin6_port = htons((u_short) port_number);
 225         sin4.sin_port = htons((u_short) port_number);
 226
 227         p = getprotobyname("tcp");
 228
 229         s = socket( ((ip_version == 6) ? PF_INET6 : PF_INET), SOCK_STREAM, (p->p_proto));
 230         if (s < 0) {
 231                 snprintf(errormessage, SIZ,
 232                          "Can't create a listening socket: %s", strerror(errno)
 233                 );
 234                 syslog(LOG_ALERT, "%s", errormessage);
 235                 return (-1);
 236         }
 237         /* Set some socket options that make sense. */
 238         i = 1;
 239         setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
 240
 241         if (ip_version == 6) {
 242                 b = bind(s, (struct sockaddr *) &sin6, sizeof(sin6));
 243         }
 244         else {
 245                 b = bind(s, (struct sockaddr *) &sin4, sizeof(sin4));
 246         }
 247
 248         if (b < 0) {
 249                 snprintf(errormessage, SIZ,
 250                          "Can't bind: %s", strerror(errno)
 251                 );
 252                 syslog(LOG_ALERT, "%s", errormessage);
 253                 return (-1);
 254         }
 255
 256         fcntl(s, F_SETFL, O_NONBLOCK);
 257
 258         if (listen(s, ((queue_len >= 5) ? queue_len : 5) ) < 0) {
 259                 snprintf(errormessage, SIZ,
 260                          "Can't listen: %s", strerror(errno)
 261                 );
 262                 syslog(LOG_ALERT, "%s", errormessage);
 263                 return (-1);
 264         }
 265         return (s);
 266 }
 267
 268
 269
 270
 271
 272 /*
 273  * Create a Unix domain socket and listen on it
 274  */
 275 int ctdl_uds_server(char *sockpath, int queue_len, char *errormessage)
 276 {
 277         struct sockaddr_un addr;
 278         int s;
 279         int i;
 280         int actual_queue_len;
 281 #ifdef HAVE_STRUCT_UCRED
 282         int passcred = 1;
 283 #endif
 284
 285         actual_queue_len = queue_len;
 286         if (actual_queue_len < 5) actual_queue_len = 5;
 287
 288         i = unlink(sockpath);
 289         if ((i != 0) && (errno != ENOENT)) {
 290                 snprintf(errormessage, SIZ, "citserver: can't unlink %s: %s",
 291                         sockpath, strerror(errno)
 292                 );
 293                 syslog(LOG_EMERG, "%s", errormessage);
 294                 return(-1);
 295         }
 296
 297         memset(&addr, 0, sizeof(addr));
 298         addr.sun_family = AF_UNIX;
 299         safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
 300
 301         s = socket(AF_UNIX, SOCK_STREAM, 0);
 302         if (s < 0) {
 303                 snprintf(errormessage, SIZ,
 304                          "citserver: Can't create a socket: %s",
 305                          strerror(errno));
 306                 syslog(LOG_EMERG, "%s", errormessage);
 307                 return(-1);
 308         }
 309
 310         if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
 311                 snprintf(errormessage, SIZ,
 312                          "citserver: Can't bind: %s",
 313                          strerror(errno));
 314                 syslog(LOG_EMERG, "%s", errormessage);
 315                 return(-1);
 316         }
 317
 318         /* set to nonblock - we need this for some obscure situations */
 319         if (fcntl(s, F_SETFL, O_NONBLOCK) < 0) {
 320                 snprintf(errormessage, SIZ,
 321                          "citserver: Can't set socket to non-blocking: %s",
 322                          strerror(errno));
 323                 syslog(LOG_EMERG, "%s", errormessage);
 324                 close(s);
 325                 return(-1);
 326         }
 327
 328         if (listen(s, actual_queue_len) < 0) {
 329                 snprintf(errormessage, SIZ,
 330                          "citserver: Can't listen: %s",
 331                          strerror(errno));
 332                 syslog(LOG_EMERG, "%s", errormessage);
 333                 return(-1);
 334         }
 335
 336 #ifdef HAVE_STRUCT_UCRED
 337         setsockopt(s, SOL_SOCKET, SO_PASSCRED, &passcred, sizeof(passcred));
 338 #endif
 339
 340         chmod(sockpath, S_ISGID|S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IROTH|S_IWOTH|S_IXOTH);
 341         return(s);
 342 }
 343
 344
 345
 346 /*
 347  * The following functions implement output buffering on operating systems which
 348  * support it (such as Linux and various BSD flavors).
 349  */
 350 #ifndef HAVE_DARWIN
 351 #ifdef TCP_CORK
 352 #       define HAVE_TCP_BUFFERING
 353 #else
 354 #       ifdef TCP_NOPUSH
 355 #               define HAVE_TCP_BUFFERING
 356 #               define TCP_CORK TCP_NOPUSH
 357 #       endif
 358 #endif /* TCP_CORK */
 359 #endif /* HAVE_DARWIN */
 360
 361 static unsigned on = 1, off = 0;
 362
 363 void buffer_output(void) {
 364 #ifdef HAVE_TCP_BUFFERING
 365 #ifdef HAVE_OPENSSL
 366         if (!CC->redirect_ssl)
 367 #endif
 368                 setsockopt(CC->client_socket, IPPROTO_TCP, TCP_CORK, &on, 4);
 369 #endif
 370 }
 371
 372 void unbuffer_output(void) {
 373 #ifdef HAVE_TCP_BUFFERING
 374 #ifdef HAVE_OPENSSL
 375         if (!CC->redirect_ssl)
 376 #endif
 377                 setsockopt(CC->client_socket, IPPROTO_TCP, TCP_CORK, &off, 4);
 378 #endif
 379 }
 380
 381 void flush_output(void) {
 382 #ifdef HAVE_TCP_BUFFERING
 383         struct CitContext *CCC = CC;
 384         setsockopt(CCC->client_socket, IPPROTO_TCP, TCP_CORK, &off, 4);
 385         setsockopt(CCC->client_socket, IPPROTO_TCP, TCP_CORK, &on, 4);
 386 #endif
 387 }
 388
 389 /*
 390 static void flush_client_inbuf(void)
 391 {
 392         CitContext *CCC=CC;
 393
 394         FlushStrBuf(CCC->ReadBuf);
 395         CCC->RecvBuf->ReadWritePointer = NULL;
 396
 397 }
 398 */
 399
 400
 401 /*
 402  * client_close()       ...     close the client socket
 403  */
 404 void client_close(void) {
 405         CitContext *CCC = CC;
 406
 407         if (!CCC) return;
 408         if (CCC->client_socket <= 0) return;
 409         syslog(LOG_DEBUG, "Closing socket %d", CCC->client_socket);
 410
 411         close(CCC->client_socket);
 412         CCC->client_socket = -1 ;
 413 }
 414
 415
 416
 417
 418 /*
 419  * client_write()   ...    Send binary data to the client.
 420  */
 421 int client_write(const char *buf, int nbytes)
 422 {
 423         int bytes_written = 0;
 424         int retval;
 425 #ifndef HAVE_TCP_BUFFERING
 426         int old_buffer_len = 0;
 427 #endif
 428         fd_set wset;
 429         CitContext *Ctx;
 430         int fdflags;
 431
 432         if (nbytes < 1) return(0);
 433
 434         Ctx = CC;
 435
 436 #ifdef BIGBAD_IODBG
 437         {
 438                 int rv = 0;
 439                 char fn [SIZ];
 440                 FILE *fd;
 441
 442                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", Ctx->ServiceName, Ctx->cs_pid);
 443
 444                 fd = fopen(fn, "a+");
 445                 if (fd)
 446                 {
 447                     fprintf(fd, "Sending: BufSize: %d BufContent: [",
 448                             nbytes);
 449                     rv = fwrite(buf, nbytes, 1, fd);
 450                     fprintf(fd, "]\n");
 451                     fclose(fd);
 452                 }
 453         }
 454 #endif
 455 //      flush_client_inbuf();
 456         if (Ctx->redirect_buffer != NULL) {
 457                 StrBufAppendBufPlain(Ctx->redirect_buffer,
 458                                      buf, nbytes, 0);
 459                 return 0;
 460         }
 461
 462 #ifdef HAVE_OPENSSL
 463         if (Ctx->redirect_ssl) {
 464                 client_write_ssl(buf, nbytes);
 465                 return 0;
 466         }
 467 #endif
 468         if (Ctx->client_socket == -1) return -1;
 469
 470         fdflags = fcntl(Ctx->client_socket, F_GETFL);
 471
 472         while ((bytes_written < nbytes) && (Ctx->client_socket != -1)){
 473                 if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
 474                         FD_ZERO(&wset);
 475                         FD_SET(Ctx->client_socket, &wset);
 476                         if (select(1, NULL, &wset, NULL, NULL) == -1) {
 477                                 if (errno == EINTR)
 478                                 {
 479                                         syslog(LOG_DEBUG, "client_write(%d bytes) select() interrupted.",
 480                                                 nbytes-bytes_written
 481                                         );
 482                                         if (server_shutting_down) {
 483                                                 CC->kill_me = KILLME_SELECT_INTERRUPTED;
 484                                                 return (-1);
 485                                         } else {
 486                                                 /* can't trust fd's and stuff so we need to re-create them */
 487                                                 continue;
 488                                         }
 489                                 } else {
 490                                         syslog(LOG_ERR,
 491                                                 "client_write(%d bytes) select failed: %s (%d)",
 492                                                 nbytes - bytes_written,
 493                                                 strerror(errno), errno
 494                                         );
 495                                         cit_backtrace();
 496                                         client_close();
 497                                         Ctx->kill_me = KILLME_SELECT_FAILED;
 498                                         return -1;
 499                                 }
 500                         }
 501                 }
 502
 503                 retval = write(Ctx->client_socket, &buf[bytes_written], nbytes - bytes_written);
 504                 if (retval < 1) {
 505                         syslog(LOG_ERR,
 506                                 "client_write(%d bytes) failed: %s (%d)",
 507                                 nbytes - bytes_written,
 508                                 strerror(errno), errno
 509                         );
 510                         cit_backtrace();
 511                         client_close();
 512                         Ctx->kill_me = KILLME_WRITE_FAILED;
 513                         return -1;
 514                 }
 515                 bytes_written = bytes_written + retval;
 516         }
 517         return 0;
 518 }
 519
 520 void cputbuf(const StrBuf *Buf) {
 521         client_write(ChrPtr(Buf), StrLength(Buf));
 522 }
 523
 524
 525 /*
 526  * cprintf()    Send formatted printable data to the client.
 527  *              Implemented in terms of client_write() so it's technically not sysdep...
 528  */
 529 void cprintf(const char *format, ...) {
 530         va_list arg_ptr;
 531         char buf[1024];
 532
 533         va_start(arg_ptr, format);
 534         if (vsnprintf(buf, sizeof buf, format, arg_ptr) == -1)
 535                 buf[sizeof buf - 2] = '\n';
 536         client_write(buf, strlen(buf));
 537         va_end(arg_ptr);
 538 }
 539
 540
 541 /*
 542  * Read data from the client socket.
 543  *
 544  * sock         socket fd to read from
 545  * buf          buffer to read into
 546  * bytes        number of bytes to read
 547  * timeout      Number of seconds to wait before timing out
 548  *
 549  * Possible return values:
 550  *      1       Requested number of bytes has been read.
 551  *      0       Request timed out.
 552  *      -1      Connection is broken, or other error.
 553  */
 554 int client_read_blob(StrBuf *Target, int bytes, int timeout)
 555 {
 556         CitContext *CCC=CC;
 557         const char *Error;
 558         int retval = 0;
 559
 560 #ifdef HAVE_OPENSSL
 561         if (CCC->redirect_ssl) {
 562 #ifdef BIGBAD_IODBG
 563                 int rv = 0;
 564                 char fn [SIZ];
 565                 FILE *fd;
 566
 567                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 568
 569                 fd = fopen(fn, "a+");
 570                 fprintf(fd, "Reading BLOB: BufSize: %d ",
 571                         bytes);
 572                 rv = fwrite(ChrPtr(Target), StrLength(Target), 1, fd);
 573                 fprintf(fd, "]\n");
 574
 575
 576                 fclose(fd);
 577 #endif
 578                 retval = client_read_sslblob(Target, bytes, timeout);
 579                 if (retval < 0) {
 580                         syslog(LOG_CRIT, "client_read_blob() failed");
 581                 }
 582 #ifdef BIGBAD_IODBG
 583                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 584
 585                 fd = fopen(fn, "a+");
 586                 fprintf(fd, "Read: %d BufContent: [",
 587                         StrLength(Target));
 588                 rv = fwrite(ChrPtr(Target), StrLength(Target), 1, fd);
 589                 fprintf(fd, "]\n");
 590
 591
 592                 fclose(fd);
 593 #endif
 594         }
 595         else
 596 #endif
 597         {
 598 #ifdef BIGBAD_IODBG
 599                 int rv = 0;
 600                 char fn [SIZ];
 601                 FILE *fd;
 602
 603                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 604
 605                 fd = fopen(fn, "a+");
 606                 fprintf(fd, "Reading BLOB: BufSize: %d ",
 607                         bytes);
 608                 rv = fwrite(ChrPtr(Target), StrLength(Target), 1, fd);
 609                 fprintf(fd, "]\n");
 610
 611
 612                 fclose(fd);
 613 #endif
 614                 retval = StrBufReadBLOBBuffered(Target,
 615                                                 CCC->RecvBuf.Buf,
 616                                                 &CCC->RecvBuf.ReadWritePointer,
 617                                                 &CCC->client_socket,
 618                                                 1,
 619                                                 bytes,
 620                                                 O_TERM,
 621                                                 &Error);
 622                 if (retval < 0) {
 623                         syslog(LOG_CRIT, "client_read_blob() failed: %s", Error);
 624                         client_close();
 625                         return retval;
 626                 }
 627 #ifdef BIGBAD_IODBG
 628                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 629
 630                 fd = fopen(fn, "a+");
 631                 fprintf(fd, "Read: %d BufContent: [",
 632                         StrLength(Target));
 633                 rv = fwrite(ChrPtr(Target), StrLength(Target), 1, fd);
 634                 fprintf(fd, "]\n");
 635                 fclose(fd);
 636 #endif
 637         }
 638         return retval;
 639 }
 640
 641
 642 /*
 643  * to make client_read_random_blob() more efficient, increase buffer size.
 644  * just use in greeting function, else your buffer may be flushed
 645  */
 646 void client_set_inbound_buf(long N)
 647 {
 648         CitContext *CCC=CC;
 649         FlushStrBuf(CCC->RecvBuf.Buf);
 650         ReAdjustEmptyBuf(CCC->RecvBuf.Buf, N * SIZ, N * SIZ);
 651 }
 652
 653 int client_read_random_blob(StrBuf *Target, int timeout)
 654 {
 655         CitContext *CCC=CC;
 656         int rc;
 657
 658         rc =  client_read_blob(Target, 1, timeout);
 659         if (rc > 0)
 660         {
 661                 long len;
 662                 const char *pch;
 663
 664                 len = StrLength(CCC->RecvBuf.Buf);
 665                 pch = ChrPtr(CCC->RecvBuf.Buf);
 666
 667                 if (len > 0)
 668                 {
 669                         if (CCC->RecvBuf.ReadWritePointer != NULL) {
 670                                 len -= CCC->RecvBuf.ReadWritePointer - pch;
 671                                 pch = CCC->RecvBuf.ReadWritePointer;
 672                         }
 673                         StrBufAppendBufPlain(Target, pch, len, 0);
 674                         FlushStrBuf(CCC->RecvBuf.Buf);
 675                         CCC->RecvBuf.ReadWritePointer = NULL;
 676 #ifdef BIGBAD_IODBG
 677                         {
 678                                 int rv = 0;
 679                                 char fn [SIZ];
 680                                 FILE *fd;
 681
 682                                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 683
 684                                 fd = fopen(fn, "a+");
 685                                 fprintf(fd, "Read: BufSize: %d BufContent: [",
 686                                         StrLength(Target));
 687                                 rv = fwrite(ChrPtr(Target), StrLength(Target), 1, fd);
 688                                 fprintf(fd, "]\n");
 689
 690
 691                                 fclose(fd);
 692                         }
 693 #endif
 694
 695                         return StrLength(Target);
 696                 }
 697                 return rc;
 698         }
 699         else
 700                 return rc;
 701 }
 702
 703 int client_read_to(char *buf, int bytes, int timeout)
 704 {
 705         CitContext *CCC=CC;
 706         int rc;
 707
 708         rc = client_read_blob(CCC->MigrateBuf, bytes, timeout);
 709         if (rc < 0)
 710         {
 711                 *buf = '\0';
 712                 return rc;
 713         }
 714         else
 715         {
 716                 memcpy(buf,
 717                        ChrPtr(CCC->MigrateBuf),
 718                        StrLength(CCC->MigrateBuf) + 1);
 719                 FlushStrBuf(CCC->MigrateBuf);
 720                 return rc;
 721         }
 722 }
 723
 724
 725 int HaveMoreLinesWaiting(CitContext *CCC)
 726 {
 727         if ((CCC->kill_me != 0) ||
 728             ( (CCC->RecvBuf.ReadWritePointer == NULL) &&
 729               (StrLength(CCC->RecvBuf.Buf) == 0) &&
 730               (CCC->client_socket != -1)) )
 731                 return 0;
 732         else
 733                 return 1;
 734 }
 735
 736
 737 /*
 738  * Read data from the client socket with default timeout.
 739  * (This is implemented in terms of client_read_to() and could be
 740  * justifiably moved out of sysdep.c)
 741  */
 742 INLINE int client_read(char *buf, int bytes)
 743 {
 744         return(client_read_to(buf, bytes, config.c_sleeping));
 745 }
 746
 747 int CtdlClientGetLine(StrBuf *Target)
 748 {
 749         CitContext *CCC=CC;
 750         const char *Error;
 751         int rc;
 752
 753         FlushStrBuf(Target);
 754 #ifdef HAVE_OPENSSL
 755         if (CCC->redirect_ssl) {
 756 #ifdef BIGBAD_IODBG
 757                 char fn [SIZ];
 758                 FILE *fd;
 759                 int len = 0;
 760                 int rlen = 0;
 761                 int  nlen = 0;
 762                 int nrlen = 0;
 763                 const char *pch;
 764
 765                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 766
 767                 fd = fopen(fn, "a+");
 768                 pch = ChrPtr(CCC->RecvBuf.Buf);
 769                 len = StrLength(CCC->RecvBuf.Buf);
 770                 if (CCC->RecvBuf.ReadWritePointer != NULL)
 771                         rlen = CCC->RecvBuf.ReadWritePointer - pch;
 772                 else
 773                         rlen = 0;
 774
 775 /*              fprintf(fd, "\n\n\nBufSize: %d BufPos: %d \nBufContent: [%s]\n\n_____________________\n",
 776                         len, rlen, pch);
 777 */
 778                 fprintf(fd, "\n\n\nSSL1: BufSize: %d BufPos: %d \n_____________________\n",
 779                         len, rlen);
 780 #endif
 781                 rc = client_readline_sslbuffer(Target,
 782                                                CCC->RecvBuf.Buf,
 783                                                &CCC->RecvBuf.ReadWritePointer,
 784                                                1);
 785 #ifdef BIGBAD_IODBG
 786                 pch = ChrPtr(CCC->RecvBuf.Buf);
 787                 nlen = StrLength(CCC->RecvBuf.Buf);
 788                 if (CCC->RecvBuf.ReadWritePointer != NULL)
 789                         nrlen = CCC->RecvBuf.ReadWritePointer - pch;
 790                 else
 791                         nrlen = 0;
 792 /*
 793                 fprintf(fd, "\n\n\nBufSize: was: %d is: %d BufPos: was: %d is: %d \nBufContent: [%s]\n\n_____________________\n",
 794                         len, nlen, rlen, nrlen, pch);
 795 */
 796                 fprintf(fd, "\n\n\nSSL2: BufSize: was: %d is: %d BufPos: was: %d is: %d \n",
 797                         len, nlen, rlen, nrlen);
 798
 799                 fprintf(fd, "SSL3: Read: BufSize: %d BufContent: [%s]\n\n*************\n",
 800                         StrLength(Target), ChrPtr(Target));
 801                 fclose(fd);
 802
 803                 if (rc < 0) {
 804                         syslog(LOG_CRIT, "CtdlClientGetLine() failed");
 805                 }
 806 #endif
 807                 return rc;
 808         }
 809         else
 810 #endif
 811         {
 812 #ifdef BIGBAD_IODBG
 813                 char fn [SIZ];
 814                 FILE *fd;
 815                 int len, rlen, nlen, nrlen;
 816                 const char *pch;
 817
 818                 snprintf(fn, SIZ, "/tmp/foolog_%s.%d", CCC->ServiceName, CCC->cs_pid);
 819
 820                 fd = fopen(fn, "a+");
 821                 pch = ChrPtr(CCC->RecvBuf.Buf);
 822                 len = StrLength(CCC->RecvBuf.Buf);
 823                 if (CCC->RecvBuf.ReadWritePointer != NULL)
 824                         rlen = CCC->RecvBuf.ReadWritePointer - pch;
 825                 else
 826                         rlen = 0;
 827
 828 /*              fprintf(fd, "\n\n\nBufSize: %d BufPos: %d \nBufContent: [%s]\n\n_____________________\n",
 829                         len, rlen, pch);
 830 */
 831                 fprintf(fd, "\n\n\nBufSize: %d BufPos: %d \n_____________________\n",
 832                         len, rlen);
 833 #endif
 834                 rc = StrBufTCP_read_buffered_line_fast(Target,
 835                                                        CCC->RecvBuf.Buf,
 836                                                        &CCC->RecvBuf.ReadWritePointer,
 837                                                        &CCC->client_socket,
 838                                                        5,
 839                                                        1,
 840                                                        &Error);
 841
 842 #ifdef BIGBAD_IODBG
 843                 pch = ChrPtr(CCC->RecvBuf.Buf);
 844                 nlen = StrLength(CCC->RecvBuf.Buf);
 845                 if (CCC->RecvBuf.ReadWritePointer != NULL)
 846                         nrlen = CCC->RecvBuf.ReadWritePointer - pch;
 847                 else
 848                         nrlen = 0;
 849 /*
 850                 fprintf(fd, "\n\n\nBufSize: was: %d is: %d BufPos: was: %d is: %d \nBufContent: [%s]\n\n_____________________\n",
 851                         len, nlen, rlen, nrlen, pch);
 852 */
 853                 fprintf(fd, "\n\n\nBufSize: was: %d is: %d BufPos: was: %d is: %d \n",
 854                         len, nlen, rlen, nrlen);
 855
 856                 fprintf(fd, "Read: BufSize: %d BufContent: [%s]\n\n*************\n",
 857                         StrLength(Target), ChrPtr(Target));
 858                 fclose(fd);
 859
 860                 if ((rc < 0) && (Error != NULL)) {
 861                         syslog(LOG_CRIT, "CtdlClientGetLine() failed: %s", Error);
 862                 }
 863 #endif
 864                 return rc;
 865         }
 866 }
 867
 868
 869 /*
 870  * client_getln()   ...   Get a LF-terminated line of text from the client.
 871  * (This is implemented in terms of client_read() and could be
 872  * justifiably moved out of sysdep.c)
 873  */
 874 int client_getln(char *buf, int bufsize)
 875 {
 876         int i, retval;
 877         CitContext *CCC=CC;
 878         const char *pCh;
 879
 880         retval = CtdlClientGetLine(CCC->MigrateBuf);
 881         if (retval < 0)
 882           return(retval >= 0);
 883
 884
 885         i = StrLength(CCC->MigrateBuf);
 886         pCh = ChrPtr(CCC->MigrateBuf);
 887         /* Strip the trailing LF, and the trailing CR if present.
 888          */
 889         if (bufsize <= i)
 890                 i = bufsize - 1;
 891         while ( (i > 0)
 892                 && ( (pCh[i - 1]==13)
 893                      || ( pCh[i - 1]==10)) ) {
 894                 i--;
 895         }
 896         memcpy(buf, pCh, i);
 897         buf[i] = 0;
 898
 899         FlushStrBuf(CCC->MigrateBuf);
 900         if (retval < 0) {
 901                 safestrncpy(&buf[i], "000", bufsize - i);
 902         }
 903         return(retval >= 0);
 904 }
 905
 906
 907 /*
 908  * Cleanup any contexts that are left lying around
 909  */
 910
 911
 912 void close_masters (void)
 913 {
 914         struct ServiceFunctionHook *serviceptr;
 915
 916         /*
 917          * close all protocol master sockets
 918          */
 919         for (serviceptr = ServiceHookTable; serviceptr != NULL;
 920             serviceptr = serviceptr->next ) {
 921
 922                 if (serviceptr->tcp_port > 0)
 923                 {
 924                         syslog(LOG_INFO, "Closing %d listener on port %d\n",
 925                                serviceptr->msock,
 926                                serviceptr->tcp_port);
 927                         serviceptr->tcp_port = 0;
 928                 }
 929
 930                 if (serviceptr->sockpath != NULL)
 931                         syslog(LOG_INFO, "Closing %d listener on '%s'\n",
 932                                serviceptr->msock,
 933                                serviceptr->sockpath);
 934                 if (serviceptr->msock != -1)
 935                         close(serviceptr->msock);
 936                 /* If it's a Unix domain socket, remove the file. */
 937                 if (serviceptr->sockpath != NULL) {
 938                         unlink(serviceptr->sockpath);
 939                         serviceptr->sockpath = NULL;
 940                 }
 941         }
 942 }
 943
 944
 945 /*
 946  * The system-dependent part of master_cleanup() - close the master socket.
 947  */
 948 void sysdep_master_cleanup(void) {
 949
 950         close_masters();
 951
 952         context_cleanup();
 953
 954 #ifdef HAVE_OPENSSL
 955         destruct_ssl();
 956 #endif
 957         CtdlDestroyProtoHooks();
 958         CtdlDestroyDeleteHooks();
 959         CtdlDestroyXmsgHooks();
 960         CtdlDestroyNetprocHooks();
 961         CtdlDestroyUserHooks();
 962         CtdlDestroyMessageHook();
 963         CtdlDestroyCleanupHooks();
 964         CtdlDestroyFixedOutputHooks();
 965         CtdlDestroySessionHooks();
 966         CtdlDestroyServiceHook();
 967         CtdlDestroyRoomHooks();
 968         CtdlDestroySearchHooks();
 969         CtdlDestroyDebugTable();
 970         #ifdef HAVE_BACKTRACE
 971 ///     eCrash_Uninit();
 972         #endif
 973 }
 974
 975
 976
 977 pid_t current_child;
 978 void graceful_shutdown(int signum) {
 979         kill(current_child, signum);
 980         unlink(file_pid_file);
 981         exit(0);
 982 }
 983
 984 int nFireUps = 0;
 985 int nFireUpsNonRestart = 0;
 986 pid_t ForkedPid = 1;
 987
 988 /*
 989  * Start running as a daemon.
 990  */
 991 void start_daemon(int unused) {
 992         int status = 0;
 993         pid_t child = 0;
 994         FILE *fp;
 995         int do_restart = 0;
 996
 997         current_child = 0;
 998
 999         /* Close stdin/stdout/stderr and replace them with /dev/null.
1000          * We don't just call close() because we don't want these fd's
1001          * to be reused for other files.
1002          */
1003         if (chdir(ctdl_run_dir) != 0)
1004                 syslog(LOG_EMERG,
1005                               "unable to change into directory [%s]: %s",
1006                               ctdl_run_dir, strerror(errno));
1007
1008         child = fork();
1009         if (child != 0) {
1010                 exit(0);
1011         }
1012
1013         signal(SIGHUP, SIG_IGN);
1014         signal(SIGINT, SIG_IGN);
1015         signal(SIGQUIT, SIG_IGN);
1016
1017         setsid();
1018         umask(0);
1019         if ((freopen("/dev/null", "r", stdin) != stdin) ||
1020             (freopen("/dev/null", "w", stdout) != stdout) ||
1021             (freopen("/dev/null", "w", stderr) != stderr))
1022                 syslog(LOG_EMERG,
1023                               "unable to reopen stdin/out/err %s",
1024                               strerror(errno));
1025
1026
1027         do {
1028                 current_child = fork();
1029
1030                 signal(SIGTERM, graceful_shutdown);
1031
1032                 if (current_child < 0) {
1033                         perror("fork");
1034                         exit(errno);
1035                 }
1036
1037                 else if (current_child == 0) {
1038                         return; /* continue starting citadel. */
1039                 }
1040
1041                 else {
1042                         fp = fopen(file_pid_file, "w");
1043                         if (fp != NULL) {
1044                                 fprintf(fp, ""F_PID_T"\n", getpid());
1045                                 fclose(fp);
1046                         }
1047                         waitpid(current_child, &status, 0);
1048                 }
1049
1050                 nFireUpsNonRestart = nFireUps;
1051
1052                 /* Exit code 0 means the watcher should exit */
1053                 if (WIFEXITED(status) && (WEXITSTATUS(status) == CTDLEXIT_SHUTDOWN)) {
1054                         do_restart = 0;
1055                 }
1056
1057                 /* Exit code 101-109 means the watcher should exit */
1058                 else if (WIFEXITED(status) && (WEXITSTATUS(status) >= 101) && (WEXITSTATUS(status) <= 109)) {
1059                         do_restart = 0;
1060                 }
1061
1062                 /* Any other exit code, or no exit code, means we should restart. */
1063                 else {
1064                         do_restart = 1;
1065                         nFireUps++;
1066                         ForkedPid = current_child;
1067                 }
1068
1069         } while (do_restart);
1070
1071         unlink(file_pid_file);
1072         exit(WEXITSTATUS(status));
1073 }
1074
1075
1076
1077 void checkcrash(void)
1078 {
1079         if (nFireUpsNonRestart != nFireUps)
1080         {
1081                 StrBuf *CrashMail;
1082
1083                 CrashMail = NewStrBuf();
1084                 syslog(LOG_ALERT, "Posting crash message\n");
1085                 StrBufPrintf(CrashMail,
1086                         " \n"
1087                         " The Citadel server process (citserver) terminated unexpectedly."
1088                         "\n \n"
1089                         " This could be the result of a bug in the server program, or some external "
1090                         "factor.\n \n"
1091                         " You can obtain more information about this by enabling core dumps.\n \n"
1092                         " For more information, please see:\n \n"
1093                         " http://citadel.org/doku.php?id=faq:mastering_your_os:gdb#how.do.i.make.my.system.produce.core-files"
1094                         "\n \n"
1095
1096                         " If you have already done this, the core dump is likely to be found at %score.%d\n"
1097                         ,
1098                         ctdl_run_dir, ForkedPid);
1099                 CtdlAideMessage(ChrPtr(CrashMail), "Citadel server process terminated unexpectedly");
1100                 FreeStrBuf(&CrashMail);
1101         }
1102 }
1103
1104
1105 /*
1106  * Generic routine to convert a login name to a full name (gecos)
1107  * Returns nonzero if a conversion took place
1108  */
1109 int convert_login(char NameToConvert[]) {
1110         struct passwd *pw;
1111         int a;
1112
1113         pw = getpwnam(NameToConvert);
1114         if (pw == NULL) {
1115                 return(0);
1116         }
1117         else {
1118                 strcpy(NameToConvert, pw->pw_gecos);
1119                 for (a=0; a<strlen(NameToConvert); ++a) {
1120                         if (NameToConvert[a] == ',') NameToConvert[a] = 0;
1121                 }
1122                 return(1);
1123         }
1124 }
1125
1126
1127
1128 /*
1129  * This loop just keeps going and going and going...
1130  */
1131 void *worker_thread(void *blah) {
1132         int highest;
1133         CitContext *ptr;
1134         CitContext *bind_me = NULL;
1135         fd_set readfds;
1136         int retval = 0;
1137         struct timeval tv;
1138         int force_purge = 0;
1139         struct ServiceFunctionHook *serviceptr;
1140         int ssock;                      /* Descriptor for client socket */
1141         CitContext *con = NULL;         /* Temporary context pointer */
1142         int i;
1143
1144         ++num_workers;
1145
1146         while (!server_shutting_down) {
1147
1148                 /* make doubly sure we're not holding any stale db handles
1149                  * which might cause a deadlock.
1150                  */
1151                 cdb_check_handles();
1152 do_select:      force_purge = 0;
1153                 bind_me = NULL;         /* Which session shall we handle? */
1154
1155                 /* Initialize the fdset. */
1156                 FD_ZERO(&readfds);
1157                 highest = 0;
1158
1159                 /* First, add the various master sockets to the fdset. */
1160                 for (serviceptr = ServiceHookTable; serviceptr != NULL; serviceptr = serviceptr->next ) {
1161                         FD_SET(serviceptr->msock, &readfds);
1162                         if (serviceptr->msock > highest) {
1163                                 highest = serviceptr->msock;
1164                         }
1165                 }
1166
1167                 /* Next, add all of the client sockets. */
1168                 begin_critical_section(S_SESSION_TABLE);
1169                 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
1170                         if ((ptr->state == CON_SYS) && (ptr->client_socket == 0))
1171                             continue;
1172
1173                         /* Don't select on dead sessions, only truly idle ones */
1174                         if (    (ptr->state == CON_IDLE)
1175                                 && (ptr->kill_me == 0)
1176                                 && (ptr->client_socket > 0)
1177                         ) {
1178                                 FD_SET(ptr->client_socket, &readfds);
1179                                 if (ptr->client_socket > highest)
1180                                         highest = ptr->client_socket;
1181                         }
1182                         if ((bind_me == NULL) && (ptr->state == CON_READY)) {
1183                                 bind_me = ptr;
1184                                 ptr->state = CON_EXECUTING;
1185                                 break;
1186                         }
1187                         if ((bind_me == NULL) && (ptr->state == CON_GREETING)) {
1188                                 bind_me = ptr;
1189                                 ptr->state = CON_STARTING;
1190                                 break;
1191                         }
1192                 }
1193                 end_critical_section(S_SESSION_TABLE);
1194
1195                 if (bind_me) {
1196                         goto SKIP_SELECT;
1197                 }
1198
1199                 /* If we got this far, it means that there are no sessions
1200                  * which a previous thread marked for attention, so we go
1201                  * ahead and get ready to select().
1202                  */
1203
1204                 if (!server_shutting_down) {
1205                         tv.tv_sec = 1;          /* wake up every second if no input */
1206                         tv.tv_usec = 0;
1207                         retval = select(highest + 1, &readfds, NULL, NULL, &tv);
1208                 }
1209                 else {
1210                         --num_workers;
1211                         return NULL;
1212                 }
1213
1214                 /* Now figure out who made this select() unblock.
1215                  * First, check for an error or exit condition.
1216                  */
1217                 if (retval < 0) {
1218                         if (errno == EBADF) {
1219                                 syslog(LOG_NOTICE, "select() failed: (%s)\n", strerror(errno));
1220                                 goto do_select;
1221                         }
1222                         if (errno != EINTR) {
1223                                 syslog(LOG_EMERG, "Exiting (%s)\n", strerror(errno));
1224                                 server_shutting_down = 1;
1225                                 continue;
1226                         } else {
1227 #if 0
1228                                 syslog(LOG_DEBUG, "Interrupted select()\n");
1229 #endif
1230                                 if (server_shutting_down) {
1231                                         --num_workers;
1232                                         return(NULL);
1233                                 }
1234                                 goto do_select;
1235                         }
1236                 }
1237                 else if (retval == 0) {
1238                         if (server_shutting_down) {
1239                                 --num_workers;
1240                                 return(NULL);
1241                         }
1242                 }
1243
1244                 /* Next, check to see if it's a new client connecting * on a master socket. */
1245
1246                 else if ((retval > 0) && (!server_shutting_down)) for (serviceptr = ServiceHookTable; serviceptr != NULL; serviceptr = serviceptr->next) {
1247
1248                         if (FD_ISSET(serviceptr->msock, &readfds)) {
1249                                 ssock = accept(serviceptr->msock, NULL, 0);
1250                                 if (ssock >= 0) {
1251                                         syslog(LOG_DEBUG, "New client socket %d", ssock);
1252
1253                                         /* The master socket is non-blocking but the client
1254                                          * sockets need to be blocking, otherwise certain
1255                                          * operations barf on FreeBSD.  Not a fatal error.
1256                                          */
1257                                         if (fcntl(ssock, F_SETFL, 0) < 0) {
1258                                                 syslog(LOG_EMERG,
1259                                                         "citserver: Can't set socket to blocking: %s\n",
1260                                                         strerror(errno));
1261                                         }
1262
1263                                         /* New context will be created already
1264                                          * set up in the CON_EXECUTING state.
1265                                          */
1266                                         con = CreateNewContext();
1267
1268                                         /* Assign our new socket number to it. */
1269                                         con->tcp_port = serviceptr->tcp_port;
1270                                         con->client_socket = ssock;
1271                                         con->h_command_function = serviceptr->h_command_function;
1272                                         con->h_async_function = serviceptr->h_async_function;
1273                                         con->h_greeting_function = serviceptr->h_greeting_function;
1274                                         con->ServiceName = serviceptr->ServiceName;
1275
1276                                         /* Determine whether it's a local socket */
1277                                         if (serviceptr->sockpath != NULL) {
1278                                                 con->is_local_socket = 1;
1279                                         }
1280
1281                                         /* Set the SO_REUSEADDR socket option */
1282                                         i = 1;
1283                                         setsockopt(ssock, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
1284                                         con->state = CON_GREETING;
1285                                         retval--;
1286                                         if (retval == 0)
1287                                                 break;
1288                                 }
1289                         }
1290                 }
1291
1292                 /* It must be a client socket.  Find a context that has data
1293                  * waiting on its socket *and* is in the CON_IDLE state.  Any
1294                  * active sockets other than our chosen one are marked as
1295                  * CON_READY so the next thread that comes around can just bind
1296                  * to one without having to select() again.
1297                  */
1298                 begin_critical_section(S_SESSION_TABLE);
1299                 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
1300                         int checkfd = ptr->client_socket;
1301                         if ((checkfd != -1) && (ptr->state == CON_IDLE) ){
1302                                 if (FD_ISSET(checkfd, &readfds)) {
1303                                         ptr->input_waiting = 1;
1304                                         if (!bind_me) {
1305                                                 bind_me = ptr;  /* I choose you! */
1306                                                 bind_me->state = CON_EXECUTING;
1307                                         }
1308                                         else {
1309                                                 ptr->state = CON_READY;
1310                                         }
1311                                 } else if ((ptr->is_async) && (ptr->async_waiting) && (ptr->h_async_function)) {
1312                                         if (!bind_me) {
1313                                                 bind_me = ptr;  /* I choose you! */
1314                                                 bind_me->state = CON_EXECUTING;
1315                                         }
1316                                         else {
1317                                                 ptr->state = CON_READY;
1318                                         }
1319                                 }
1320                         }
1321                 }
1322                 end_critical_section(S_SESSION_TABLE);
1323
1324 SKIP_SELECT:
1325                 /* We're bound to a session */
1326                 ++active_workers;
1327                 if (bind_me != NULL) {
1328                         become_session(bind_me);
1329
1330                         if (bind_me->state == CON_STARTING) {
1331                                 bind_me->state = CON_EXECUTING;
1332                                 begin_session(bind_me);
1333                                 bind_me->h_greeting_function();
1334                         }
1335                         /* If the client has sent a command, execute it. */
1336                         if (CC->input_waiting) {
1337                                 CC->h_command_function();
1338
1339                                 while (HaveMoreLinesWaiting(CC))
1340                                        CC->h_command_function();
1341
1342                                 CC->input_waiting = 0;
1343                         }
1344
1345                         /* If there are asynchronous messages waiting and the
1346                          * client supports it, do those now */
1347                         if ((CC->is_async) && (CC->async_waiting)
1348                            && (CC->h_async_function != NULL)) {
1349                                 CC->h_async_function();
1350                                 CC->async_waiting = 0;
1351                         }
1352
1353                         force_purge = CC->kill_me;
1354                         become_session(NULL);
1355                         bind_me->state = CON_IDLE;
1356                 }
1357
1358                 dead_session_purge(force_purge);
1359                 do_housekeeping();
1360                 --active_workers;
1361         }
1362
1363         /* If control reaches this point, the server is shutting down */
1364         --num_workers;
1365         return(NULL);
1366 }
1367
1368
1369
1370 /*
1371  * SyslogFacility()
1372  * Translate text facility name to syslog.h defined value.
1373  */
1374 int SyslogFacility(char *name)
1375 {
1376         int i;
1377         struct
1378         {
1379                 int facility;
1380                 char *name;
1381         }   facTbl[] =
1382         {
1383                 {   LOG_KERN,   "kern"          },
1384                 {   LOG_USER,   "user"          },
1385                 {   LOG_MAIL,   "mail"          },
1386                 {   LOG_DAEMON, "daemon"        },
1387                 {   LOG_AUTH,   "auth"          },
1388                 {   LOG_SYSLOG, "syslog"        },
1389                 {   LOG_LPR,    "lpr"           },
1390                 {   LOG_NEWS,   "news"          },
1391                 {   LOG_UUCP,   "uucp"          },
1392                 {   LOG_LOCAL0, "local0"        },
1393                 {   LOG_LOCAL1, "local1"        },
1394                 {   LOG_LOCAL2, "local2"        },
1395                 {   LOG_LOCAL3, "local3"        },
1396                 {   LOG_LOCAL4, "local4"        },
1397                 {   LOG_LOCAL5, "local5"        },
1398                 {   LOG_LOCAL6, "local6"        },
1399                 {   LOG_LOCAL7, "local7"        },
1400                 {   0,            NULL          }
1401         };
1402         for(i = 0; facTbl[i].name != NULL; i++) {
1403                 if(!strcasecmp(name, facTbl[i].name))
1404                         return facTbl[i].facility;
1405         }
1406         return LOG_DAEMON;
1407 }