4 * Citadel "system dependent" stuff.
5 * See copyright.txt for copyright information.
7 * Here's where we (hopefully) have most parts of the Citadel server that
8 * would need to be altered to run the server in a non-POSIX environment.
10 * If we ever port to a different platform and either have multiple
11 * variants of this file or simply load it up with #ifdefs.
26 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <sys/syslog.h>
32 #if TIME_WITH_SYS_TIME
33 # include <sys/time.h>
37 # include <sys/time.h>
44 #include <sys/resource.h>
45 #include <netinet/in.h>
46 #include <arpa/inet.h>
59 #include "serv_extensions.h"
60 #include "sysdep_decls.h"
61 #include "citserver.h"
65 #include "housekeeping.h"
67 #include "serv_crypto.h"
69 #ifdef HAVE_SYS_SELECT_H
70 #include <sys/select.h>
78 #ifdef DEBUG_MEMORY_LEAKS
86 struct igheap *igheap = NULL;
90 pthread_mutex_t Critters[MAX_SEMAPHORES]; /* Things needing locking */
91 pthread_key_t MyConKey; /* TSD key for MyContext() */
93 int verbosity = DEFAULT_VERBOSITY; /* Logging level */
95 struct CitContext masterCC;
96 time_t last_purge = 0; /* Last dead session purge */
97 static int num_threads = 0; /* Current number of threads */
98 int num_sessions = 0; /* Current number of sessions */
100 int syslog_facility = (-1);
104 * lprintf() ... Write logging information
106 * Note: the variable "buf" below needs to be large enough to handle any
107 * log data sent through this function. BE CAREFUL!
109 void lprintf(enum LogLevel loglevel, const char *format, ...) {
113 va_start(arg_ptr, format);
114 vsnprintf(buf, sizeof(buf), format, arg_ptr);
117 if (syslog_facility >= 0) {
118 if (loglevel <= verbosity) {
120 if (CC && CC->cs_pid) {
121 memmove(buf + 6, buf, sizeof(buf) - 6);
122 snprintf(buf, 6, "[%3d]", CC->cs_pid);
125 syslog(loglevel, "%s", buf);
128 else if (loglevel <= verbosity) {
133 gettimeofday(&tv, NULL);
134 /* Promote to time_t; types differ on some OSes (like darwin) */
135 unixtime = tv.tv_sec;
136 localtime_r(&unixtime, &tim);
138 * Log provides millisecond accuracy. If you need
139 * microsecond accuracy and your OS supports it, change
140 * %03ld to %06ld and remove " / 1000" after tv.tv_usec.
142 if (CC && CC->cs_pid) {
144 /* Millisecond display */
146 "%04d/%02d/%02d %2d:%02d:%02d.%03ld [%3d] %s",
147 tim.tm_year + 1900, tim.tm_mon + 1,
148 tim.tm_mday, tim.tm_hour, tim.tm_min,
149 tim.tm_sec, (long)tv.tv_usec / 1000,
152 /* Microsecond display */
154 "%04d/%02d/%02d %2d:%02d:%02d.%06ld [%3d] %s",
155 tim.tm_year + 1900, tim.tm_mon + 1,
156 tim.tm_mday, tim.tm_hour, tim.tm_min,
157 tim.tm_sec, (long)tv.tv_usec,
161 /* Millisecond display */
163 "%04d/%02d/%02d %2d:%02d:%02d.%03ld %s",
164 tim.tm_year + 1900, tim.tm_mon + 1,
165 tim.tm_mday, tim.tm_hour, tim.tm_min,
166 tim.tm_sec, (long)tv.tv_usec / 1000, buf);
168 /* Microsecond display */
170 "%04d/%02d/%02d %2d:%02d:%02d.%06ld %s",
171 tim.tm_year + 1900, tim.tm_mon + 1,
172 tim.tm_mday, tim.tm_hour, tim.tm_min,
173 tim.tm_sec, (long)tv.tv_usec, buf);
178 PerformLogHooks(loglevel, buf);
184 * We used to use master_cleanup() as a signal handler to shut down the server.
185 * however, master_cleanup() and the functions it calls do some things that
186 * aren't such a good idea to do from a signal handler: acquiring mutexes,
187 * playing with signal masks on BSDI systems, etc. so instead we install the
188 * following signal handler to set a global variable to inform the main loop
189 * that it's time to call master_cleanup() and exit.
192 volatile int time_to_die = 0;
194 static RETSIGTYPE signal_cleanup(int signum) {
200 * Some initialization stuff...
202 void init_sysdep(void) {
205 /* Avoid vulnerabilities related to FD_SETSIZE if we can. */
209 getrlimit(RLIMIT_NOFILE, &rl);
210 rl.rlim_cur = FD_SETSIZE;
211 rl.rlim_max = FD_SETSIZE;
212 setrlimit(RLIMIT_NOFILE, &rl);
216 /* If we've got OpenSSL, we're going to use it. */
221 /* Set up a bunch of semaphores to be used for critical sections */
222 for (i=0; i<MAX_SEMAPHORES; ++i) {
223 pthread_mutex_init(&Critters[i], NULL);
227 * Set up a place to put thread-specific data.
228 * We only need a single pointer per thread - it points to the
229 * CitContext structure (in the ContextList linked list) of the
230 * session to which the calling thread is currently bound.
232 if (pthread_key_create(&MyConKey, NULL) != 0) {
233 lprintf(CTDL_CRIT, "Can't create TSD key!! %s\n", strerror(errno));
237 * The action for unexpected signals and exceptions should be to
238 * call signal_cleanup() to gracefully shut down the server.
240 signal(SIGINT, signal_cleanup);
241 signal(SIGQUIT, signal_cleanup);
242 signal(SIGHUP, signal_cleanup);
243 signal(SIGTERM, signal_cleanup);
246 * Do not shut down the server on broken pipe signals, otherwise the
247 * whole Citadel service would come down whenever a single client
250 signal(SIGPIPE, SIG_IGN);
255 * Obtain a semaphore lock to begin a critical section.
257 void begin_critical_section(int which_one)
259 /* lprintf(CTDL_DEBUG, "begin_critical_section(%d)\n", which_one); */
261 /* For all types of critical sections except those listed here,
262 * ensure nobody ever tries to do a critical section within a
263 * transaction; this could lead to deadlock.
265 if ( (which_one != S_FLOORCACHE)
266 #ifdef DEBUG_MEMORY_LEAKS
267 && (which_one != S_DEBUGMEMLEAKS)
272 pthread_mutex_lock(&Critters[which_one]);
276 * Release a semaphore lock to end a critical section.
278 void end_critical_section(int which_one)
280 pthread_mutex_unlock(&Critters[which_one]);
286 * This is a generic function to set up a master socket for listening on
287 * a TCP port. The server shuts down if the bind fails.
290 int ig_tcp_server(char *ip_addr, int port_number, int queue_len)
292 struct sockaddr_in sin;
294 int actual_queue_len;
296 actual_queue_len = queue_len;
297 if (actual_queue_len < 5) actual_queue_len = 5;
299 memset(&sin, 0, sizeof(sin));
300 sin.sin_family = AF_INET;
301 sin.sin_port = htons((u_short)port_number);
302 if (ip_addr == NULL) {
303 sin.sin_addr.s_addr = INADDR_ANY;
306 sin.sin_addr.s_addr = inet_addr(ip_addr);
309 if (sin.sin_addr.s_addr == INADDR_NONE) {
310 sin.sin_addr.s_addr = INADDR_ANY;
313 s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
316 lprintf(CTDL_EMERG, "citserver: Can't create a socket: %s\n",
322 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
324 if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
325 lprintf(CTDL_EMERG, "citserver: Can't bind: %s\n",
331 if (listen(s, actual_queue_len) < 0) {
332 lprintf(CTDL_EMERG, "citserver: Can't listen: %s\n", strerror(errno));
343 * Create a Unix domain socket and listen on it
345 int ig_uds_server(char *sockpath, int queue_len)
347 struct sockaddr_un addr;
350 int actual_queue_len;
352 actual_queue_len = queue_len;
353 if (actual_queue_len < 5) actual_queue_len = 5;
355 i = unlink(sockpath);
356 if (i != 0) if (errno != ENOENT) {
357 lprintf(CTDL_EMERG, "citserver: can't unlink %s: %s\n",
358 sockpath, strerror(errno));
362 memset(&addr, 0, sizeof(addr));
363 addr.sun_family = AF_UNIX;
364 safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
366 s = socket(AF_UNIX, SOCK_STREAM, 0);
368 lprintf(CTDL_EMERG, "citserver: Can't create a socket: %s\n",
373 if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
374 lprintf(CTDL_EMERG, "citserver: Can't bind: %s\n",
379 if (listen(s, actual_queue_len) < 0) {
380 lprintf(CTDL_EMERG, "citserver: Can't listen: %s\n", strerror(errno));
384 chmod(sockpath, 0777);
391 * Return a pointer to the CitContext structure bound to the thread which
392 * called this function. If there's no such binding (for example, if it's
393 * called by the housekeeper thread) then a generic 'master' CC is returned.
395 * This function is used *VERY* frequently and must be kept small.
397 struct CitContext *MyContext(void) {
399 register struct CitContext *c;
401 return ((c = (struct CitContext *) pthread_getspecific(MyConKey),
402 c == NULL) ? &masterCC : c
408 * Initialize a new context and place it in the list. The session number
409 * used to be the PID (which is why it's called cs_pid), but that was when we
410 * had one process per session. Now we just assign them sequentially, starting
411 * at 1 (don't change it to 0 because masterCC uses 0) and re-using them when
412 * sessions terminate.
414 struct CitContext *CreateNewContext(void) {
415 struct CitContext *me, *ptr;
417 me = (struct CitContext *) malloc(sizeof(struct CitContext));
419 lprintf(CTDL_ALERT, "citserver: can't allocate memory!!\n");
422 memset(me, 0, sizeof(struct CitContext));
424 /* The new context will be created already in the CON_EXECUTING state
425 * in order to prevent another thread from grabbing it while it's
428 me->state = CON_EXECUTING;
432 * Generate a unique session number and insert this context into
435 begin_critical_section(S_SESSION_TABLE);
437 if (ContextList == NULL) {
443 else if (ContextList->cs_pid > 1) {
444 me->next = ContextList;
450 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
451 if (ptr->next == NULL) {
453 me->cs_pid = ptr->cs_pid + 1;
457 else if (ptr->next->cs_pid > (ptr->cs_pid+1)) {
458 me->next = ptr->next;
460 me->cs_pid = ptr->cs_pid + 1;
466 DONE: ++num_sessions;
467 end_critical_section(S_SESSION_TABLE);
473 * buffer_output() ... tell client_write to buffer all output until
474 * instructed to dump it all out later
476 void buffer_output(void) {
477 if (CC->buffering == 0) {
480 CC->output_buffer = malloc(SIZ);
485 * flush_output() ... dump out all that output we've been buffering.
487 void flush_output(void) {
488 if (CC->buffering == 1) {
489 client_write(CC->output_buffer, CC->buffer_len);
495 * unbuffer_output() ... stop buffering output.
497 void unbuffer_output(void) {
498 if (CC->buffering == 1) {
500 /* We don't call flush_output because we can't. */
501 client_write(CC->output_buffer, CC->buffer_len);
503 free(CC->output_buffer);
504 CC->output_buffer = NULL;
511 * client_write() ... Send binary data to the client.
513 void client_write(char *buf, int nbytes)
515 int bytes_written = 0;
518 int old_buffer_len = 0;
520 if (CC->redirect_fp != NULL) {
521 fwrite(buf, nbytes, 1, CC->redirect_fp);
525 if (CC->redirect_sock > 0) {
526 sock = CC->redirect_sock; /* and continue below... */
529 sock = CC->client_socket;
532 /* If we're buffering for later, do that now. */
534 old_buffer_len = CC->buffer_len;
535 CC->buffer_len += nbytes;
536 CC->output_buffer = realloc(CC->output_buffer, CC->buffer_len);
537 memcpy(&CC->output_buffer[old_buffer_len], buf, nbytes);
541 /* Ok, at this point we're not buffering. Go ahead and write. */
544 if (CC->redirect_ssl) {
545 client_write_ssl(buf, nbytes);
550 while (bytes_written < nbytes) {
551 retval = write(sock, &buf[bytes_written],
552 nbytes - bytes_written);
554 lprintf(CTDL_ERR, "client_write() failed: %s\n",
556 if (sock == CC->client_socket) CC->kill_me = 1;
559 bytes_written = bytes_written + retval;
565 * cprintf() ... Send formatted printable data to the client. It is
566 * implemented in terms of client_write() but remains in
567 * sysdep.c in case we port to somewhere without va_args...
569 void cprintf(const char *format, ...) {
573 va_start(arg_ptr, format);
574 if (vsnprintf(buf, sizeof buf, format, arg_ptr) == -1)
575 buf[sizeof buf - 2] = '\n';
576 client_write(buf, strlen(buf));
582 * Read data from the client socket.
584 * 1 Requested number of bytes has been read.
585 * 0 Request timed out.
586 * -1 The socket is broken.
587 * If the socket breaks, the session will be terminated.
589 int client_read_to(char *buf, int bytes, int timeout)
597 if (CC->redirect_ssl) {
598 return (client_read_ssl(buf, bytes, timeout));
604 FD_SET(CC->client_socket, &rfds);
608 retval = select( (CC->client_socket)+1,
609 &rfds, NULL, NULL, &tv);
611 if (FD_ISSET(CC->client_socket, &rfds) == 0) {
615 rlen = read(CC->client_socket, &buf[len], bytes-len);
617 lprintf(CTDL_ERR, "client_read() failed: %s\n",
628 * Read data from the client socket with default timeout.
629 * (This is implemented in terms of client_read_to() and could be
630 * justifiably moved out of sysdep.c)
632 INLINE int client_read(char *buf, int bytes)
634 return(client_read_to(buf, bytes, config.c_sleeping));
639 * client_gets() ... Get a LF-terminated line of text from the client.
640 * (This is implemented in terms of client_read() and could be
641 * justifiably moved out of sysdep.c)
643 int client_gets(char *buf)
647 /* Read one character at a time.
650 retval = client_read(&buf[i], 1);
651 if (retval != 1 || buf[i] == '\n' || i == (SIZ-1))
655 /* If we got a long line, discard characters until the newline.
658 while (buf[i] != '\n' && retval == 1)
659 retval = client_read(&buf[i], 1);
661 /* Strip the trailing newline and any trailing nonprintables (cr's)
664 while ((strlen(buf)>0)&&(!isprint(buf[strlen(buf)-1])))
665 buf[strlen(buf)-1] = 0;
666 if (retval < 0) strcpy(buf, "000");
673 * The system-dependent part of master_cleanup() - close the master socket.
675 void sysdep_master_cleanup(void) {
676 struct ServiceFunctionHook *serviceptr;
679 * close all protocol master sockets
681 for (serviceptr = ServiceHookTable; serviceptr != NULL;
682 serviceptr = serviceptr->next ) {
684 if (serviceptr->tcp_port > 0)
685 lprintf(CTDL_INFO, "Closing listener on port %d\n",
686 serviceptr->tcp_port);
688 if (serviceptr->sockpath != NULL)
689 lprintf(CTDL_INFO, "Closing listener on '%s'\n",
690 serviceptr->sockpath);
692 close(serviceptr->msock);
694 /* If it's a Unix domain socket, remove the file. */
695 if (serviceptr->sockpath != NULL) {
696 unlink(serviceptr->sockpath);
703 * Terminate another session.
704 * (This could justifiably be moved out of sysdep.c because it
705 * no longer does anything that is system-dependent.)
707 void kill_session(int session_to_kill) {
708 struct CitContext *ptr;
710 begin_critical_section(S_SESSION_TABLE);
711 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
712 if (ptr->cs_pid == session_to_kill) {
716 end_critical_section(S_SESSION_TABLE);
723 * Start running as a daemon. Only close stdio if do_close_stdio is set.
725 void start_daemon(int do_close_stdio) {
726 if (do_close_stdio) {
731 signal(SIGHUP,SIG_IGN);
732 signal(SIGINT,SIG_IGN);
733 signal(SIGQUIT,SIG_IGN);
734 if (fork()!=0) exit(0);
740 * Generic routine to convert a login name to a full name (gecos)
741 * Returns nonzero if a conversion took place
743 int convert_login(char NameToConvert[]) {
747 pw = getpwnam(NameToConvert);
752 strcpy(NameToConvert, pw->pw_gecos);
753 for (a=0; a<strlen(NameToConvert); ++a) {
754 if (NameToConvert[a] == ',') NameToConvert[a] = 0;
760 struct worker_node *worker_list = NULL;
764 * create a worker thread. this function must always be called from within
765 * an S_WORKER_LIST critical section!
767 void create_worker(void) {
769 struct worker_node *n;
772 n = malloc(sizeof(struct worker_node));
774 lprintf(CTDL_EMERG, "can't allocate worker_node, exiting\n");
779 if ((ret = pthread_attr_init(&attr))) {
780 lprintf(CTDL_EMERG, "pthread_attr_init: %s\n", strerror(ret));
785 /* we seem to need something bigger than FreeBSD's default 64k stack */
787 if ((ret = pthread_attr_setstacksize(&attr, 128 * 1024))) {
788 lprintf(CTDL_EMERG, "pthread_attr_setstacksize: %s\n", strerror(ret));
790 pthread_attr_destroy(&attr);
794 if ((ret = pthread_create(&n->tid, &attr, worker_thread, NULL) != 0))
797 lprintf(CTDL_ALERT, "Can't create worker thread: %s\n",
801 n->next = worker_list;
803 pthread_attr_destroy(&attr);
809 * Purge all sessions which have the 'kill_me' flag set.
810 * This function has code to prevent it from running more than once every
811 * few seconds, because running it after every single unbind would waste a lot
812 * of CPU time and keep the context list locked too much. To force it to run
813 * anyway, set "force" to nonzero.
816 * After that's done, we raise the size of the worker thread pool
817 * if such an action is appropriate.
819 void dead_session_purge(int force) {
820 struct CitContext *ptr, *rem;
823 if ( (time(NULL) - last_purge) < 5 ) {
824 return; /* Too soon, go away */
831 begin_critical_section(S_SESSION_TABLE);
832 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
833 if ( (ptr->state == CON_IDLE) && (ptr->kill_me) ) {
837 end_critical_section(S_SESSION_TABLE);
839 /* RemoveContext() enters its own S_SESSION_TABLE critical
840 * section, so we have to do it like this.
843 lprintf(CTDL_DEBUG, "Purging session %d\n", rem->cs_pid);
847 } while (rem != NULL);
849 /* Raise the size of the worker thread pool if necessary. */
851 if ( (num_sessions > num_threads)
852 && (num_threads < config.c_max_workers) ) {
853 begin_critical_section(S_WORKER_LIST);
855 end_critical_section(S_WORKER_LIST);
864 * Redirect a session's output to a file or socket.
865 * This function may be called with a file handle *or* a socket (but not
866 * both). Call with neither to return output to its normal client socket.
868 void CtdlRedirectOutput(FILE *fp, int sock) {
870 if (fp != NULL) CC->redirect_fp = fp;
871 else CC->redirect_fp = NULL;
873 if (sock > 0) CC->redirect_sock = sock;
874 else CC->redirect_sock = (-1);
880 * masterCC is the context we use when not attached to a session. This
881 * function initializes it.
883 void InitializeMasterCC(void) {
884 memset(&masterCC, 0, sizeof(struct CitContext));
885 masterCC.internal_pgm = 1;
895 * Bind a thread to a context. (It's inline merely to speed things up.)
897 INLINE void become_session(struct CitContext *which_con) {
898 pthread_setspecific(MyConKey, (void *)which_con );
904 * This loop just keeps going and going and going...
906 void *worker_thread(void *arg) {
909 struct CitContext *ptr;
910 struct CitContext *bind_me = NULL;
913 struct CitContext *con= NULL; /* Temporary context pointer */
914 struct ServiceFunctionHook *serviceptr;
915 int ssock; /* Descriptor for client socket */
924 while (!time_to_die) {
926 /* make doubly sure we're not holding any stale db handles
927 * which might cause a deadlock.
930 do_select: force_purge = 0;
931 bind_me = NULL; /* Which session shall we handle? */
933 /* Initialize the fdset. */
937 begin_critical_section(S_SESSION_TABLE);
938 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
939 if (ptr->state == CON_IDLE) {
940 FD_SET(ptr->client_socket, &readfds);
941 if (ptr->client_socket > highest)
942 highest = ptr->client_socket;
944 if ((bind_me == NULL) && (ptr->state == CON_READY)) {
946 ptr->state = CON_EXECUTING;
949 end_critical_section(S_SESSION_TABLE);
951 if (bind_me) goto SKIP_SELECT;
953 /* If we got this far, it means that there are no sessions
954 * which a previous thread marked for attention, so we go
955 * ahead and get ready to select().
958 /* First, add the various master sockets to the fdset. */
959 for (serviceptr = ServiceHookTable; serviceptr != NULL;
960 serviceptr = serviceptr->next ) {
961 m = serviceptr->msock;
969 tv.tv_sec = 1; /* wake up every second if no input */
971 retval = select(highest + 1, &readfds, NULL, NULL, &tv);
974 if (time_to_die) return(NULL);
976 /* Now figure out who made this select() unblock.
977 * First, check for an error or exit condition.
980 if (errno == EBADF) {
981 lprintf(CTDL_NOTICE, "select() failed: (%s)\n",
985 if (errno != EINTR) {
986 lprintf(CTDL_EMERG, "Exiting (%s)\n", strerror(errno));
988 } else if (!time_to_die)
992 /* Next, check to see if it's a new client connecting
993 * on a master socket.
995 else for (serviceptr = ServiceHookTable; serviceptr != NULL;
996 serviceptr = serviceptr->next ) {
998 if (FD_ISSET(serviceptr->msock, &readfds)) {
999 ssock = accept(serviceptr->msock, NULL, 0);
1002 "citserver: accept(): %s\n",
1007 "New client socket %d\n",
1010 /* New context will be created already
1011 * set up in the CON_EXECUTING state.
1013 con = CreateNewContext();
1015 /* Assign new socket number to it. */
1016 con->client_socket = ssock;
1017 con->h_command_function =
1018 serviceptr->h_command_function;
1019 con->h_async_function =
1020 serviceptr->h_async_function;
1022 /* Determine whether local socket */
1023 if (serviceptr->sockpath != NULL)
1024 con->is_local_socket = 1;
1026 /* Set the SO_REUSEADDR socket option */
1028 setsockopt(ssock, SOL_SOCKET,
1032 become_session(con);
1034 serviceptr->h_greeting_function();
1035 become_session(NULL);
1036 con->state = CON_IDLE;
1042 /* It must be a client socket. Find a context that has data
1043 * waiting on its socket *and* is in the CON_IDLE state. Any
1044 * active sockets other than our chosen one are marked as
1045 * CON_READY so the next thread that comes around can just bind
1046 * to one without having to select() again.
1048 begin_critical_section(S_SESSION_TABLE);
1049 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
1050 if ( (FD_ISSET(ptr->client_socket, &readfds))
1051 && (ptr->state != CON_EXECUTING) ) {
1052 ptr->input_waiting = 1;
1054 bind_me = ptr; /* I choose you! */
1055 bind_me->state = CON_EXECUTING;
1058 ptr->state = CON_READY;
1062 end_critical_section(S_SESSION_TABLE);
1065 /* We're bound to a session */
1066 if (bind_me != NULL) {
1067 become_session(bind_me);
1069 /* If the client has sent a command, execute it. */
1070 if (CC->input_waiting) {
1071 CC->h_command_function();
1072 CC->input_waiting = 0;
1075 /* If there are asynchronous messages waiting and the
1076 * client supports it, do those now */
1077 if ((CC->is_async) && (CC->async_waiting)
1078 && (CC->h_async_function != NULL)) {
1079 CC->h_async_function();
1080 CC->async_waiting = 0;
1083 force_purge = CC->kill_me;
1084 become_session(NULL);
1085 bind_me->state = CON_IDLE;
1088 dead_session_purge(force_purge);
1090 check_sched_shutdown();
1093 /* If control reaches this point, the server is shutting down */
1102 * Translate text facility name to syslog.h defined value.
1104 int SyslogFacility(char *name)
1113 { LOG_KERN, "kern" },
1114 { LOG_USER, "user" },
1115 { LOG_MAIL, "mail" },
1116 { LOG_DAEMON, "daemon" },
1117 { LOG_AUTH, "auth" },
1118 { LOG_SYSLOG, "syslog" },
1120 { LOG_NEWS, "news" },
1121 { LOG_UUCP, "uucp" },
1122 { LOG_LOCAL0, "local0" },
1123 { LOG_LOCAL1, "local1" },
1124 { LOG_LOCAL2, "local2" },
1125 { LOG_LOCAL3, "local3" },
1126 { LOG_LOCAL4, "local4" },
1127 { LOG_LOCAL5, "local5" },
1128 { LOG_LOCAL6, "local6" },
1129 { LOG_LOCAL7, "local7" },
1132 for(i = 0; facTbl[i].name != NULL; i++) {
1133 if(!strcasecmp(name, facTbl[i].name))
1134 return facTbl[i].facility;
1140 /********** MEM CHEQQER ***********/
1142 #ifdef DEBUG_MEMORY_LEAKS
1149 void *tracked_malloc(size_t size, char *file, int line) {
1150 struct igheap *thisheap;
1153 block = malloc(size);
1154 if (block == NULL) return(block);
1156 thisheap = malloc(sizeof(struct igheap));
1157 if (thisheap == NULL) {
1162 thisheap->block = block;
1163 strcpy(thisheap->file, file);
1164 thisheap->line = line;
1166 begin_critical_section(S_DEBUGMEMLEAKS);
1167 thisheap->next = igheap;
1169 end_critical_section(S_DEBUGMEMLEAKS);
1175 void *tracked_realloc(void *ptr, size_t size, char *file, int line) {
1176 struct igheap *thisheap;
1179 block = realloc(ptr, size);
1180 if (block == NULL) return(block);
1182 thisheap = malloc(sizeof(struct igheap));
1183 if (thisheap == NULL) {
1188 thisheap->block = block;
1189 strcpy(thisheap->file, file);
1190 thisheap->line = line;
1192 begin_critical_section(S_DEBUGMEMLEAKS);
1193 thisheap->next = igheap;
1195 end_critical_section(S_DEBUGMEMLEAKS);
1202 void tracked_free(void *ptr) {
1203 struct igheap *thisheap;
1204 struct igheap *trash;
1208 if (igheap == NULL) return;
1209 begin_critical_section(S_DEBUGMEMLEAKS);
1210 for (thisheap = igheap; thisheap != NULL; thisheap = thisheap->next) {
1211 if (thisheap->next != NULL) {
1212 if (thisheap->next->block == ptr) {
1213 trash = thisheap->next;
1214 thisheap->next = thisheap->next->next;
1219 if (igheap->block == ptr) {
1221 igheap = igheap->next;
1224 end_critical_section(S_DEBUGMEMLEAKS);
1227 char *tracked_strdup(const char *s, char *file, int line) {
1230 if (s == NULL) return(NULL);
1231 ptr = tracked_malloc(strlen(s) + 1, file, line);
1232 if (ptr == NULL) return(NULL);
1233 strncpy(ptr, s, strlen(s));
1237 void dump_heap(void) {
1238 struct igheap *thisheap;
1240 for (thisheap = igheap; thisheap != NULL; thisheap = thisheap->next) {
1241 lprintf(CTDL_CRIT, "UNFREED: %30s : %d\n",
1242 thisheap->file, thisheap->line);
1246 #endif /* DEBUG_MEMORY_LEAKS */