4 * This contains a simple multithreaded TCP server manager. It sits around
5 * waiting on the specified port for incoming HTTP connections. When a
6 * connection is established, it calls context_loop() from context_loop.c.
8 * Copyright (c) 1996-2009 by the citadel.org developers.
9 * This program is released under the terms of the GNU General Public License v3.
14 #include "webserver.h"
19 #include "modules_init.h"
21 int vsnprintf(char *buf, size_t max, const char *fmt, va_list argp);
24 int verbosity = 9; /* Logging level */
25 int msock; /* master listening socket */
26 int is_https = 0; /* Nonzero if I am an HTTPS service */
27 int follow_xff = 0; /* Follow X-Forwarded-For: header */
28 int home_specified = 0; /* did the user specify a homedir? */
29 int time_to_die = 0; /* Nonzero if server is shutting down */
31 extern void *context_loop(int*);
32 extern void *housekeeping_loop(void);
33 extern pthread_mutex_t SessionListMutex;
34 extern pthread_key_t MyConKey;
37 char ctdl_key_dir[PATH_MAX]=SSL_DIR;
38 char file_crpt_file_key[PATH_MAX]="";
39 char file_crpt_file_csr[PATH_MAX]="";
40 char file_crpt_file_cer[PATH_MAX]="";
42 char socket_dir[PATH_MAX]; /* where to talk to our citadel server */
43 static const char editor_absolut_dir[PATH_MAX]=EDITORDIR; /* nailed to what configure gives us. */
44 static char static_dir[PATH_MAX]; /* calculated on startup */
45 static char static_local_dir[PATH_MAX]; /* calculated on startup */
46 static char static_icon_dir[PATH_MAX]; /* where should we find our mime icons? */
47 char *static_dirs[]={ /* needs same sort order as the web mapping */
48 (char*)static_dir, /* our templates on disk */
49 (char*)static_local_dir, /* user provided templates disk */
50 (char*)editor_absolut_dir, /* the editor on disk */
51 (char*)static_icon_dir /* our icons... */
55 * Subdirectories from which the client may request static content
57 * (If you add more, remember to increment 'ndirs' below)
59 char *static_content_dirs[] = {
60 "static", /* static templates */
61 "static.local", /* site local static templates */
62 "tiny_mce" /* rich text editor */
68 char *server_cookie = NULL; /* our Cookie connection to the client */
69 int http_port = PORT_NUM; /* Port to listen on */
70 char *ctdlhost = DEFAULT_HOST; /* our name */
71 char *ctdlport = DEFAULT_PORT; /* our Port */
72 int setup_wizard = 0; /* should we run the setup wizard? \todo */
73 char wizard_filename[PATH_MAX]; /* where's the setup wizard? */
74 int running_as_daemon = 0; /* should we deamonize on startup? */
78 * This is a generic function to set up a master socket for listening on
79 * a TCP port. The server shuts down if the bind fails.
81 * ip_addr IP address to bind
82 * port_number port number to bind
83 * queue_len number of incoming connections to allow in the queue
85 int ig_tcp_server(char *ip_addr, int port_number, int queue_len)
87 struct sockaddr_in sin;
90 memset(&sin, 0, sizeof(sin));
91 sin.sin_family = AF_INET;
92 if (ip_addr == NULL) {
93 sin.sin_addr.s_addr = INADDR_ANY;
95 sin.sin_addr.s_addr = inet_addr(ip_addr);
98 if (sin.sin_addr.s_addr == INADDR_NONE) {
99 sin.sin_addr.s_addr = INADDR_ANY;
102 if (port_number == 0) {
103 lprintf(1, "Cannot start: no port number specified.\n");
106 sin.sin_port = htons((u_short) port_number);
108 s = socket(PF_INET, SOCK_STREAM, (getprotobyname("tcp")->p_proto));
110 lprintf(1, "Can't create a socket: %s\n", strerror(errno));
113 /* Set some socket options that make sense. */
115 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
118 fcntl(s, F_SETFL, O_NONBLOCK); /* maide: this statement is incorrect
119 there should be a preceding F_GETFL
120 and a bitwise OR with the previous
124 if (bind(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
125 lprintf(1, "Can't bind: %s\n", strerror(errno));
128 if (listen(s, queue_len) < 0) {
129 lprintf(1, "Can't listen: %s\n", strerror(errno));
138 * Create a Unix domain socket and listen on it
139 * sockpath - file name of the unix domain socket
140 * queue_len - Number of incoming connections to allow in the queue
142 int ig_uds_server(char *sockpath, int queue_len)
144 struct sockaddr_un addr;
147 int actual_queue_len;
149 actual_queue_len = queue_len;
150 if (actual_queue_len < 5) actual_queue_len = 5;
152 i = unlink(sockpath);
153 if ((i != 0) && (errno != ENOENT)) {
154 lprintf(1, "webcit: can't unlink %s: %s\n",
155 sockpath, strerror(errno));
159 memset(&addr, 0, sizeof(addr));
160 addr.sun_family = AF_UNIX;
161 safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
163 s = socket(AF_UNIX, SOCK_STREAM, 0);
165 lprintf(1, "webcit: Can't create a socket: %s\n",
170 if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
171 lprintf(1, "webcit: Can't bind: %s\n",
176 if (listen(s, actual_queue_len) < 0) {
177 lprintf(1, "webcit: Can't listen: %s\n",
182 chmod(sockpath, 0777);
190 * Read data from the client socket.
192 * sock socket fd to read from
193 * buf buffer to read into
194 * bytes number of bytes to read
195 * timeout Number of seconds to wait before timing out
197 * Possible return values:
198 * 1 Requested number of bytes has been read.
199 * 0 Request timed out.
200 * -1 Connection is broken, or other error.
202 int client_read_to(int *sock, StrBuf *Target, StrBuf *Buf, const char **Pos, int bytes, int timeout)
209 long bufremain = StrLength(Buf) - (*Pos - ChrPtr(Buf));
210 StrBufAppendBufPlain(Target, *Pos, bufremain, 0);
214 while ((StrLength(Buf) + StrLength(Target) < bytes) &&
216 retval = client_read_sslbuffer(Buf, timeout);
218 StrBufAppendBuf(Target, Buf, 0); /* todo: Buf > bytes? */
220 write(2, "\033[32m", 5);
221 write(2, buf, bytes);
222 write(2, "\033[30m", 5);
227 lprintf(2, "client_read_ssl() failed\n");
233 retval = StrBufReadBLOBBuffered(Target,
240 lprintf(2, "client_read() failed: %s\n",
246 write(2, "\033[32m", 5);
247 write(2, buf, bytes);
248 write(2, "\033[30m", 5);
255 * Begin buffering HTTP output so we can transmit it all in one write operation later.
257 void begin_burst(void)
259 if (WC->WBuf == NULL) {
260 WC->WBuf = NewStrBufPlain(NULL, 32768);
266 * Finish buffering HTTP output. [Compress using zlib and] output with a Content-Length: header.
271 const char *ptr, *eptr;
278 /* Perform gzip compression, if enabled and supported by client */
279 if (!DisableGzip && (WCC->gzip_ok) && CompressBuffer(WCC->WBuf))
281 hprintf("Content-encoding: gzip\r\n");
283 //#endif /* HAVE_ZLIB */
285 hprintf("Content-length: %d\r\n\r\n", StrLength(WCC->WBuf));
287 ptr = ChrPtr(WCC->HBuf);
288 count = StrLength(WCC->HBuf);
293 client_write_ssl(WCC->HBuf);
294 client_write_ssl(WCC->WBuf);
302 write(2, "\033[34m", 5);
303 write(2, ptr, StrLength(WCC->WBuf));
304 write(2, "\033[30m", 5);
306 fdflags = fcntl(WC->http_sock, F_GETFL);
309 if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
311 FD_SET(WCC->http_sock, &wset);
312 if (select(WCC->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
313 lprintf(2, "client_write: Socket select failed (%s)\n", strerror(errno));
318 if ((res = write(WCC->http_sock,
321 lprintf(2, "client_write: Socket write failed (%s)\n", strerror(errno));
329 ptr = ChrPtr(WCC->WBuf);
330 count = StrLength(WCC->WBuf);
335 write(2, "\033[34m", 5);
336 write(2, ptr, StrLength(WCC->WBuf));
337 write(2, "\033[30m", 5);
341 if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
343 FD_SET(WCC->http_sock, &wset);
344 if (select(WCC->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
345 lprintf(2, "client_write: Socket select failed (%s)\n", strerror(errno));
350 if ((res = write(WCC->http_sock,
353 lprintf(2, "client_write: Socket write failed (%s)\n", strerror(errno));
361 return StrLength(WCC->WBuf);
366 * Shut us down the regular way.
367 * signum is the signal we want to forward
370 void graceful_shutdown_watcher(int signum) {
371 lprintf (1, "bye; shutting down watcher.");
372 kill(current_child, signum);
373 if (signum != SIGHUP)
378 int ClientGetLine(int *sock, StrBuf *Target, StrBuf *CLineBuf, const char **Pos)
380 const char *Error, *pch, *pchs;
381 int rlen, len, retval = 0;
386 if (StrLength(CLineBuf) > 0) {
387 pchs = ChrPtr(CLineBuf);
388 pch = strchr(pchs, '\n');
392 if (len > 0 && (*(pch - 1) == '\r') )
394 StrBufSub(Target, CLineBuf, 0, len - rlen);
395 StrBufCutLeft(CLineBuf, len + 1);
400 while (retval == 0) {
402 pchs = ChrPtr(CLineBuf);
404 pch = strchr(pchs, '\n');
406 retval = client_read_sslbuffer(CLineBuf, SLEEPING);
407 pchs = ChrPtr(CLineBuf);
408 pch = strchr(pchs, '\n');
417 if ((retval > 0) && (pch != NULL)) {
420 if (len > 0 && (*(pch - 1) == '\r') )
422 StrBufSub(Target, CLineBuf, 0, len - rlen);
423 StrBufCutLeft(CLineBuf, len + 1);
432 return StrBufTCP_read_buffered_line_fast(Target,
444 * Shut us down the regular way.
445 * signum is the signal we want to forward
448 void graceful_shutdown(int signum) {
453 lprintf (1, "bye going down gracefull.[%d][%s]\n", signum, wd);
465 * Start running as a daemon.
467 void start_daemon(char *pid_file)
476 /* Close stdin/stdout/stderr and replace them with /dev/null.
477 * We don't just call close() because we don't want these fd's
478 * to be reused for other files.
482 signal(SIGHUP, SIG_IGN);
483 signal(SIGINT, SIG_IGN);
484 signal(SIGQUIT, SIG_IGN);
493 freopen("/dev/null", "r", stdin);
494 freopen("/dev/null", "w", stdout);
495 freopen("/dev/null", "w", stderr);
496 signal(SIGTERM, graceful_shutdown_watcher);
497 signal(SIGHUP, graceful_shutdown_watcher);
500 current_child = fork();
503 if (current_child < 0) {
505 ShutDownLibCitadel ();
509 else if (current_child == 0) { /* child process */
510 signal(SIGHUP, graceful_shutdown);
512 return; /* continue starting webcit. */
514 else { /* watcher process */
516 fp = fopen(pid_file, "w");
518 fprintf(fp, "%d\n", getpid());
522 waitpid(current_child, &status, 0);
527 /* Did the main process exit with an actual exit code? */
528 if (WIFEXITED(status)) {
530 /* Exit code 0 means the watcher should exit */
531 if (WEXITSTATUS(status) == 0) {
535 /* Exit code 101-109 means the watcher should exit */
536 else if ( (WEXITSTATUS(status) >= 101) && (WEXITSTATUS(status) <= 109) ) {
540 /* Any other exit code means we should restart. */
546 /* Any other type of termination (signals, etc.) should also restart. */
551 } while (do_restart);
556 ShutDownLibCitadel ();
557 exit(WEXITSTATUS(status));
561 * Spawn an additional worker thread into the pool.
563 void spawn_another_worker_thread()
565 pthread_t SessThread; /* Thread descriptor */
566 pthread_attr_t attr; /* Thread attributes */
569 lprintf(3, "Creating a new thread\n");
571 /* set attributes for the new thread */
572 pthread_attr_init(&attr);
573 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
576 * Our per-thread stacks need to be bigger than the default size, otherwise
577 * the MIME parser crashes on FreeBSD, and the IMAP service crashes on
580 if ((ret = pthread_attr_setstacksize(&attr, 1024 * 1024))) {
581 lprintf(1, "pthread_attr_setstacksize: %s\n",
583 pthread_attr_destroy(&attr);
586 /* now create the thread */
587 if (pthread_create(&SessThread, &attr,
588 (void *(*)(void *)) worker_entry, NULL)
590 lprintf(1, "Can't create thread: %s\n", strerror(errno));
593 /* free up the attributes */
594 pthread_attr_destroy(&attr);
597 /* #define DBG_PRINNT_HOOKS_AT_START */
598 #ifdef DBG_PRINNT_HOOKS_AT_START
599 const char foobuf[32];
600 const char *nix(void *vptr) {snprintf(foobuf, 32, "%0x", (long) vptr); return foobuf;}
602 extern int dbg_analyze_msg;
603 extern int dbg_bactrace_template_errors;
604 extern int DumpTemplateI18NStrings;
605 extern StrBuf *I18nDump;
606 void InitTemplateCache(void);
607 extern int LoadTemplates;
608 extern void LoadZoneFiles(void);
609 StrBuf *csslocal = NULL;
611 * Here's where it all begins.
613 int main(int argc, char **argv)
615 pthread_t SessThread; /* Thread descriptor */
616 pthread_attr_t attr; /* Thread attributes */
617 int a, i; /* General-purpose variables */
618 char tracefile[PATH_MAX];
619 char ip_addr[256]="0.0.0.0";
620 char dirbuffer[PATH_MAX]="";
623 int home_specified=0;
624 char relhome[PATH_MAX]="";
625 char webcitdir[PATH_MAX] = DATADIR;
626 char *pidfile = NULL;
632 #endif /* ENABLE_NLS */
633 char uds_listen_path[PATH_MAX]; /* listen on a unix domain socket? */
634 const char *I18nDumpFile = NULL;
636 WildFireInitBacktrace(argv[0], 2);
638 HandlerHash = NewHash(1, NULL);
639 PreferenceHooks = NewHash(1, NULL);
640 WirelessTemplateCache = NewHash(1, NULL);
641 WirelessLocalTemplateCache = NewHash(1, NULL);
642 LocalTemplateCache = NewHash(1, NULL);
643 TemplateCache = NewHash(1, NULL);
644 GlobalNS = NewHash(1, NULL);
645 Iterators = NewHash(1, NULL);
646 Conditionals = NewHash(1, NULL);
647 MsgHeaderHandler = NewHash(1, NULL);
648 MimeRenderHandler = NewHash(1, NULL);
649 SortHash = NewHash(1, NULL);
653 #ifdef DBG_PRINNT_HOOKS_AT_START
654 dbg_PrintHash(HandlerHash, nix, NULL);
657 /* Ensure that we are linked to the correct version of libcitadel */
658 if (libcitadel_version_number() < LIBCITADEL_VERSION_NUMBER) {
659 fprintf(stderr, " You are running libcitadel version %d.%02d\n",
660 (libcitadel_version_number() / 100), (libcitadel_version_number() % 100));
661 fprintf(stderr, "WebCit was compiled against version %d.%02d\n",
662 (LIBCITADEL_VERSION_NUMBER / 100), (LIBCITADEL_VERSION_NUMBER % 100));
666 strcpy(uds_listen_path, "");
668 /* Parse command line */
670 while ((a = getopt(argc, argv, "h:i:p:t:T:x:dD:G:cfsZ")) != EOF)
672 while ((a = getopt(argc, argv, "h:i:p:t:T:x:dD:G:cfZ")) != EOF)
676 hdir = strdup(optarg);
678 if (!relh) safestrncpy(webcitdir, hdir,
681 safestrncpy(relhome, relhome,
683 /* free(hdir); TODO: SHOULD WE DO THIS? */
688 running_as_daemon = 1;
691 pidfile = strdup(optarg);
692 running_as_daemon = 1;
695 safestrncpy(ip_addr, optarg, sizeof ip_addr);
698 http_port = atoi(optarg);
699 if (http_port == 0) {
700 safestrncpy(uds_listen_path, optarg, sizeof uds_listen_path);
704 safestrncpy(tracefile, optarg, sizeof tracefile);
705 freopen(tracefile, "w", stdout);
706 freopen(tracefile, "w", stderr);
707 freopen(tracefile, "r", stdin);
710 LoadTemplates = atoi(optarg);
711 dbg_analyze_msg = (LoadTemplates && (1<<1)) != 0;
712 dbg_bactrace_template_errors = (LoadTemplates && (1<<2)) != 0;
718 verbosity = atoi(optarg);
724 server_cookie = malloc(256);
725 if (server_cookie != NULL) {
726 safestrncpy(server_cookie,
727 "Set-cookie: wcserver=",
730 (&server_cookie[strlen(server_cookie)],
732 lprintf(2, "gethostname: %s\n",
742 DumpTemplateI18NStrings = 1;
743 I18nDump = NewStrBufPlain(HKEY("int templatestrings(void)\n{\n"));
744 I18nDumpFile = optarg;
747 fprintf(stderr, "usage: webcit "
748 "[-i ip_addr] [-p http_port] "
749 "[-t tracefile] [-c] [-f] "
750 "[-T Templatedebuglevel] "
751 "[-d] [-Z] [-G i18ndumpfile] "
755 "[remotehost [remoteport]]\n");
760 ctdlhost = argv[optind];
762 ctdlport = argv[optind];
765 /* daemonize, if we were asked to */
766 if (!DumpTemplateI18NStrings && running_as_daemon) {
767 start_daemon(pidfile);
770 signal(SIGHUP, graceful_shutdown);
773 /* Tell 'em who's in da house */
774 lprintf(1, PACKAGE_STRING "\n");
775 lprintf(1, "Copyright (C) 1996-2009 by the Citadel development team.\n"
776 "This software is distributed under the terms of the "
777 "GNU General Public License.\n\n"
781 /* initialize the International Bright Young Thing */
783 initialize_locales();
786 locale = setlocale(LC_ALL, "");
788 mo = malloc(strlen(webcitdir) + 20);
789 lprintf(9, "Message catalog directory: %s\n", bindtextdomain("webcit", LOCALEDIR"/locale"));
791 lprintf(9, "Text domain: %s\n", textdomain("webcit"));
792 lprintf(9, "Text domain Charset: %s\n", bind_textdomain_codeset("webcit","UTF8"));
796 /* calculate all our path on a central place */
797 /* where to keep our config */
799 #define COMPUTE_DIRECTORY(SUBDIR) memcpy(dirbuffer,SUBDIR, sizeof dirbuffer);\
800 snprintf(SUBDIR,sizeof SUBDIR, "%s%s%s%s%s%s%s", \
801 (home&!relh)?webcitdir:basedir, \
802 ((basedir!=webcitdir)&(home&!relh))?basedir:"/", \
803 ((basedir!=webcitdir)&(home&!relh))?"/":"", \
805 (relhome[0]!='\0')?"/":"",\
807 (dirbuffer[0]!='\0')?"/":"");
809 COMPUTE_DIRECTORY(socket_dir);
810 basedir=WWWDIR "/static";
811 COMPUTE_DIRECTORY(static_dir);
812 basedir=WWWDIR "/static/icons";
813 COMPUTE_DIRECTORY(static_icon_dir);
814 basedir=WWWDIR "/static.local";
815 COMPUTE_DIRECTORY(static_local_dir);
817 snprintf(file_crpt_file_key,
818 sizeof file_crpt_file_key,
821 snprintf(file_crpt_file_csr,
822 sizeof file_crpt_file_csr,
825 snprintf(file_crpt_file_cer,
826 sizeof file_crpt_file_cer,
830 /* we should go somewhere we can leave our coredump, if enabled... */
831 lprintf(9, "Changing directory to %s\n", socket_dir);
832 if (chdir(webcitdir) != 0) {
835 LoadIconDir(static_icon_dir);
837 initialise_modules();
838 initialize_viewdefs();
842 if (DumpTemplateI18NStrings) {
844 StrBufAppendBufPlain(I18nDump, HKEY("}\n"), 0);
845 if (StrLength(I18nDump) < 50) {
846 lprintf(1, "********************************************************************************\n");
847 lprintf(1, "* No strings found in templates! are you shure they're there? *\n");
848 lprintf(1, "********************************************************************************\n");
851 fd = fopen(I18nDumpFile, "w");
853 lprintf(1, "********************************************************************************\n");
854 lprintf(1, "* unable to open I18N dumpfile [%s] *\n", I18nDumpFile);
855 lprintf(1, "********************************************************************************\n");
858 fwrite(ChrPtr(I18nDump), 1, StrLength(I18nDump), fd);
863 if (!access("static.local/webcit.css", R_OK)) {
864 csslocal = NewStrBufPlain(HKEY("<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"));
867 /* Tell libical to return an error instead of aborting if it sees badly formed iCalendar data. */
868 icalerror_errors_are_fatal = 0;
870 /* Use our own prefix on tzid's generated from system tzdata */
871 icaltimezone_set_tzid_prefix("/citadel.org/");
874 * Set up a place to put thread-specific data.
875 * We only need a single pointer per thread - it points to the
876 * wcsession struct to which the thread is currently bound.
878 if (pthread_key_create(&MyConKey, NULL) != 0) {
879 lprintf(1, "Can't create TSD key: %s\n", strerror(errno));
881 InitialiseSemaphores ();
884 * Set up a place to put thread-specific SSL data.
885 * We don't stick this in the wcsession struct because SSL starts
886 * up before the session is bound, and it gets torn down between
890 if (pthread_key_create(&ThreadSSL, NULL) != 0) {
891 lprintf(1, "Can't create TSD key: %s\n", strerror(errno));
896 * Bind the server to our favorite port.
897 * There is no need to check for errors, because ig_tcp_server()
898 * exits if it doesn't succeed.
901 if (!IsEmptyStr(uds_listen_path)) {
902 lprintf(2, "Attempting to create listener socket at %s...\n", uds_listen_path);
903 msock = ig_uds_server(uds_listen_path, LISTEN_QUEUE_LENGTH);
906 lprintf(2, "Attempting to bind to port %d...\n", http_port);
907 msock = ig_tcp_server(ip_addr, http_port, LISTEN_QUEUE_LENGTH);
910 lprintf(2, "Listening on socket %d\n", msock);
911 signal(SIGPIPE, SIG_IGN);
913 pthread_mutex_init(&SessionListMutex, NULL);
916 * Start up the housekeeping thread
918 pthread_attr_init(&attr);
919 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
920 pthread_create(&SessThread, &attr,
921 (void *(*)(void *)) housekeeping_loop, NULL);
925 * If this is an HTTPS server, fire up SSL
933 /* Start a few initial worker threads */
934 for (i = 0; i < (MIN_WORKER_THREADS); ++i) {
935 spawn_another_worker_thread();
938 /* now the original thread becomes another worker */
940 ShutDownLibCitadel ();
941 DeleteHash(&HandlerHash);
942 DeleteHash(&PreferenceHooks);
947 void ShutDownWebcit(void)
949 DeleteHash(&ZoneHash);
950 free_zone_directory ();
951 icaltimezone_release_zone_tab ();
952 icalmemory_free_ring ();
953 ShutDownLibCitadel ();
954 DeleteHash(&HandlerHash);
955 DeleteHash(&PreferenceHooks);
956 DeleteHash(&GlobalNS);
957 DeleteHash(&WirelessTemplateCache);
958 DeleteHash(&WirelessLocalTemplateCache);
959 DeleteHash(&TemplateCache);
960 DeleteHash(&LocalTemplateCache);
961 DeleteHash(&Iterators);
962 DeleteHash(&MimeRenderHandler);
963 DeleteHash(&Conditionals);
964 DeleteHash(&MsgHeaderHandler);
965 DeleteHash(&SortHash);
977 * Entry point for worker threads
979 void worker_entry(void)
983 int fail_this_transaction = 0;
986 fd_set readset, tempset;
991 FD_SET(msock, &readset);
994 /* Only one thread can accept at a time */
995 fail_this_transaction = 0;
999 ret = -1; /* just one at once should select... */
1000 begin_critical_section(S_SELECT);
1003 if (msock > 0) FD_SET(msock, &tempset);
1006 if (msock > 0) ret = select(msock+1, &tempset, NULL, NULL, &tv);
1007 end_critical_section(S_SELECT);
1008 if ((ret < 0) && (errno != EINTR) && (errno != EAGAIN))
1009 {/* EINTR and EAGAIN are thrown but not of interest. */
1010 lprintf(2, "accept() failed:%d %s\n",
1011 errno, strerror(errno));
1013 else if ((ret > 0) && (msock > 0) && FD_ISSET(msock, &tempset))
1014 {/* Successfully selected, and still not shutting down? Accept! */
1015 ssock = accept(msock, NULL, 0);
1018 } while ((msock > 0) && (ssock < 0) && (time_to_die == 0));
1020 if ((msock == -1)||(time_to_die))
1021 {/* ok, we're going down. */
1024 /* the first to come here will have to do the cleanup.
1025 * make shure its realy just one.
1027 begin_critical_section(S_SHUTDOWN);
1033 end_critical_section(S_SHUTDOWN);
1035 {/* we're the one to cleanup the mess. */
1036 lprintf(2, "I'm master shutdown: tagging sessions to be killed.\n");
1037 shutdown_sessions();
1038 lprintf(2, "master shutdown: waiting for others\n");
1039 sleeeeeeeeeep(1); /* wait so some others might finish... */
1040 lprintf(2, "master shutdown: cleaning up sessions\n");
1042 lprintf(2, "master shutdown: cleaning up libical\n");
1046 lprintf(2, "master shutdown exiting!.\n");
1051 if (ssock < 0 ) continue;
1054 if (ssock > 0) close (ssock);
1055 lprintf(2, "inbetween.");
1057 } else { /* Got it? do some real work! */
1058 /* Set the SO_REUSEADDR socket option */
1060 setsockopt(ssock, SOL_SOCKET, SO_REUSEADDR,
1063 /* If we are an HTTPS server, go crypto now. */
1066 if (starttls(ssock) != 0) {
1067 fail_this_transaction = 1;
1073 if (fail_this_transaction == 0) {
1075 /* Perform an HTTP transaction... */
1076 context_loop(&ssock);
1078 /* Shut down SSL/TLS if required... */
1085 /* ...and close the socket. */
1087 lingering_close(ssock);
1092 } while (!time_to_die);
1094 lprintf (1, "bye\n");
1099 * print log messages
1100 * logs to stderr if loglevel is lower than the verbosity set at startup
1102 * loglevel level of the message
1103 * format the printf like format string
1104 * ... the strings to put into format
1106 int lprintf(int loglevel, const char *format, ...)
1110 if (loglevel <= verbosity) {
1111 va_start(ap, format);
1112 vfprintf(stderr, format, ap);
1121 * print the actual stack frame.
1123 void wc_backtrace(void)
1125 #ifdef HAVE_BACKTRACE
1126 void *stack_frames[50];
1131 size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
1132 strings = backtrace_symbols(stack_frames, size);
1133 for (i = 0; i < size; i++) {
1134 if (strings != NULL)
1135 lprintf(1, "%s\n", strings[i]);
1137 lprintf(1, "%p\n", stack_frames[i]);