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 <netinet/tcp.h>
47 #include <arpa/inet.h>
60 #include "serv_extensions.h"
61 #include "sysdep_decls.h"
62 #include "citserver.h"
66 #include "housekeeping.h"
68 #include "serv_crypto.h"
70 #ifdef HAVE_SYS_SELECT_H
71 #include <sys/select.h>
79 #ifdef DEBUG_MEMORY_LEAKS
87 struct igheap *igheap = NULL;
91 pthread_mutex_t Critters[MAX_SEMAPHORES]; /* Things needing locking */
92 pthread_key_t MyConKey; /* TSD key for MyContext() */
94 int verbosity = DEFAULT_VERBOSITY; /* Logging level */
96 struct CitContext masterCC;
97 time_t last_purge = 0; /* Last dead session purge */
98 static int num_threads = 0; /* Current number of threads */
99 int num_sessions = 0; /* Current number of sessions */
101 int syslog_facility = (-1);
105 * lprintf() ... Write logging information
107 extern int running_as_daemon;
108 static int enable_syslog = 1;
109 void lprintf(enum LogLevel loglevel, const char *format, ...) {
113 va_start(arg_ptr, format);
114 vsyslog(loglevel, format, arg_ptr);
118 /* stderr output code */
119 if (enable_syslog || running_as_daemon) return;
121 /* if we run in forground and syslog is disabled, log to terminal */
122 if (loglevel <= verbosity) {
127 gettimeofday(&tv, NULL);
128 /* Promote to time_t; types differ on some OSes (like darwin) */
129 unixtime = tv.tv_sec;
130 localtime_r(&unixtime, &tim);
131 if (CC->cs_pid != 0) {
133 "%04d/%02d/%02d %2d:%02d:%02d.%06ld [%3d] ",
134 tim.tm_year + 1900, tim.tm_mon + 1,
135 tim.tm_mday, tim.tm_hour, tim.tm_min,
136 tim.tm_sec, (long)tv.tv_usec,
140 "%04d/%02d/%02d %2d:%02d:%02d.%06ld ",
141 tim.tm_year + 1900, tim.tm_mon + 1,
142 tim.tm_mday, tim.tm_hour, tim.tm_min,
143 tim.tm_sec, (long)tv.tv_usec);
145 va_start(arg_ptr, format);
146 vfprintf(stderr, format, arg_ptr);
155 * Signal handler to shut down the server.
158 volatile int time_to_die = 0;
160 static RETSIGTYPE signal_cleanup(int signum) {
161 lprintf(CTDL_DEBUG, "Caught signal %d; shutting down.\n", signum);
163 master_cleanup(signum);
168 * Some initialization stuff...
170 void init_sysdep(void) {
174 /* Avoid vulnerabilities related to FD_SETSIZE if we can. */
178 getrlimit(RLIMIT_NOFILE, &rl);
179 rl.rlim_cur = FD_SETSIZE;
180 rl.rlim_max = FD_SETSIZE;
181 setrlimit(RLIMIT_NOFILE, &rl);
185 /* If we've got OpenSSL, we're going to use it. */
190 /* Set up a bunch of semaphores to be used for critical sections */
191 for (i=0; i<MAX_SEMAPHORES; ++i) {
192 pthread_mutex_init(&Critters[i], NULL);
196 * Set up a place to put thread-specific data.
197 * We only need a single pointer per thread - it points to the
198 * CitContext structure (in the ContextList linked list) of the
199 * session to which the calling thread is currently bound.
201 if (pthread_key_create(&MyConKey, NULL) != 0) {
202 lprintf(CTDL_CRIT, "Can't create TSD key!! %s\n", strerror(errno));
206 * The action for unexpected signals and exceptions should be to
207 * call signal_cleanup() to gracefully shut down the server.
210 sigaddset(&set, SIGINT);
211 sigaddset(&set, SIGQUIT);
212 sigaddset(&set, SIGHUP);
213 sigaddset(&set, SIGTERM);
214 sigaddset(&set, SIGSEGV);
215 sigprocmask(SIG_UNBLOCK, &set, NULL);
216 signal(SIGINT, signal_cleanup);
217 signal(SIGQUIT, signal_cleanup);
218 signal(SIGHUP, signal_cleanup);
219 signal(SIGTERM, signal_cleanup);
220 signal(SIGSEGV, signal_cleanup);
223 * Do not shut down the server on broken pipe signals, otherwise the
224 * whole Citadel service would come down whenever a single client
227 signal(SIGPIPE, SIG_IGN);
232 * Obtain a semaphore lock to begin a critical section.
234 void begin_critical_section(int which_one)
236 /* lprintf(CTDL_DEBUG, "begin_critical_section(%d)\n", which_one); */
238 /* For all types of critical sections except those listed here,
239 * ensure nobody ever tries to do a critical section within a
240 * transaction; this could lead to deadlock.
242 if ( (which_one != S_FLOORCACHE)
243 #ifdef DEBUG_MEMORY_LEAKS
244 && (which_one != S_DEBUGMEMLEAKS)
249 pthread_mutex_lock(&Critters[which_one]);
253 * Release a semaphore lock to end a critical section.
255 void end_critical_section(int which_one)
257 pthread_mutex_unlock(&Critters[which_one]);
263 * This is a generic function to set up a master socket for listening on
264 * a TCP port. The server shuts down if the bind fails.
267 int ig_tcp_server(char *ip_addr, int port_number, int queue_len)
269 struct sockaddr_in sin;
271 int actual_queue_len;
273 actual_queue_len = queue_len;
274 if (actual_queue_len < 5) actual_queue_len = 5;
276 memset(&sin, 0, sizeof(sin));
277 sin.sin_family = AF_INET;
278 sin.sin_port = htons((u_short)port_number);
279 if (ip_addr == NULL) {
280 sin.sin_addr.s_addr = INADDR_ANY;
283 sin.sin_addr.s_addr = inet_addr(ip_addr);
286 if (sin.sin_addr.s_addr == INADDR_NONE) {
287 sin.sin_addr.s_addr = INADDR_ANY;
290 s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
293 lprintf(CTDL_EMERG, "citserver: Can't create a socket: %s\n",
299 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
301 if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
302 lprintf(CTDL_EMERG, "citserver: Can't bind: %s\n",
308 if (listen(s, actual_queue_len) < 0) {
309 lprintf(CTDL_EMERG, "citserver: Can't listen: %s\n", strerror(errno));
320 * Create a Unix domain socket and listen on it
322 int ig_uds_server(char *sockpath, int queue_len)
324 struct sockaddr_un addr;
327 int actual_queue_len;
329 actual_queue_len = queue_len;
330 if (actual_queue_len < 5) actual_queue_len = 5;
332 i = unlink(sockpath);
333 if (i != 0) if (errno != ENOENT) {
334 lprintf(CTDL_EMERG, "citserver: can't unlink %s: %s\n",
335 sockpath, strerror(errno));
339 memset(&addr, 0, sizeof(addr));
340 addr.sun_family = AF_UNIX;
341 safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
343 s = socket(AF_UNIX, SOCK_STREAM, 0);
345 lprintf(CTDL_EMERG, "citserver: Can't create a socket: %s\n",
350 if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
351 lprintf(CTDL_EMERG, "citserver: Can't bind: %s\n",
356 if (listen(s, actual_queue_len) < 0) {
357 lprintf(CTDL_EMERG, "citserver: Can't listen: %s\n", strerror(errno));
361 chmod(sockpath, 0777);
368 * Return a pointer to the CitContext structure bound to the thread which
369 * called this function. If there's no such binding (for example, if it's
370 * called by the housekeeper thread) then a generic 'master' CC is returned.
372 * This function is used *VERY* frequently and must be kept small.
374 struct CitContext *MyContext(void) {
376 register struct CitContext *c;
378 return ((c = (struct CitContext *) pthread_getspecific(MyConKey),
379 c == NULL) ? &masterCC : c
385 * Initialize a new context and place it in the list. The session number
386 * used to be the PID (which is why it's called cs_pid), but that was when we
387 * had one process per session. Now we just assign them sequentially, starting
388 * at 1 (don't change it to 0 because masterCC uses 0) and re-using them when
389 * sessions terminate.
391 struct CitContext *CreateNewContext(void) {
392 struct CitContext *me, *ptr;
394 me = (struct CitContext *) malloc(sizeof(struct CitContext));
396 lprintf(CTDL_ALERT, "citserver: can't allocate memory!!\n");
399 memset(me, 0, sizeof(struct CitContext));
401 /* The new context will be created already in the CON_EXECUTING state
402 * in order to prevent another thread from grabbing it while it's
405 me->state = CON_EXECUTING;
409 * Generate a unique session number and insert this context into
412 begin_critical_section(S_SESSION_TABLE);
414 if (ContextList == NULL) {
421 else if (ContextList->cs_pid > 1) {
423 me->next = ContextList;
429 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
430 if (ptr->next == NULL) {
432 me->cs_pid = ptr->cs_pid + 1;
437 else if (ptr->next->cs_pid > (ptr->cs_pid+1)) {
439 me->next = ptr->next;
440 ptr->next->prev = me;
442 me->cs_pid = ptr->cs_pid + 1;
448 DONE: ++num_sessions;
449 end_critical_section(S_SESSION_TABLE);
455 * The following functions implement output buffering. If the kernel supplies
456 * native TCP buffering (Linux & *BSD), use that; otherwise, emulate it with
457 * user-space buffering.
460 # define HAVE_TCP_BUFFERING
463 # define HAVE_TCP_BUFFERING
464 # define TCP_CORK TCP_NOPUSH
469 #ifdef HAVE_TCP_BUFFERING
470 static unsigned on = 1, off = 0;
471 void buffer_output(void) {
472 struct CitContext *ctx = MyContext();
473 setsockopt(ctx->client_socket, IPPROTO_TCP, TCP_CORK, &on, 4);
477 void unbuffer_output(void) {
478 struct CitContext *ctx = MyContext();
479 setsockopt(ctx->client_socket, IPPROTO_TCP, TCP_CORK, &off, 4);
483 void flush_output(void) {
484 struct CitContext *ctx = MyContext();
485 setsockopt(ctx->client_socket, IPPROTO_TCP, TCP_CORK, &off, 4);
486 setsockopt(ctx->client_socket, IPPROTO_TCP, TCP_CORK, &on, 4);
489 void buffer_output(void) {
490 if (CC->buffering == 0) {
493 CC->output_buffer = malloc(SIZ);
497 void flush_output(void) {
498 if (CC->buffering == 1) {
499 client_write(CC->output_buffer, CC->buffer_len);
504 void unbuffer_output(void) {
505 if (CC->buffering == 1) {
507 /* We don't call flush_output because we can't. */
508 client_write(CC->output_buffer, CC->buffer_len);
510 free(CC->output_buffer);
511 CC->output_buffer = NULL;
519 * client_write() ... Send binary data to the client.
521 void client_write(char *buf, int nbytes)
523 int bytes_written = 0;
526 #ifndef HAVE_TCP_BUFFERING
527 int old_buffer_len = 0;
530 if (CC->redirect_fp != NULL) {
531 fwrite(buf, (size_t)nbytes, (size_t)1, CC->redirect_fp);
535 if (CC->redirect_sock > 0) {
536 sock = CC->redirect_sock; /* and continue below... */
539 sock = CC->client_socket;
542 #ifndef HAVE_TCP_BUFFERING
543 /* If we're buffering for later, do that now. */
545 old_buffer_len = CC->buffer_len;
546 CC->buffer_len += nbytes;
547 CC->output_buffer = realloc(CC->output_buffer, CC->buffer_len);
548 memcpy(&CC->output_buffer[old_buffer_len], buf, nbytes);
553 /* Ok, at this point we're not buffering. Go ahead and write. */
556 if (CC->redirect_ssl) {
557 client_write_ssl(buf, nbytes);
562 while (bytes_written < nbytes) {
563 retval = write(sock, &buf[bytes_written],
564 nbytes - bytes_written);
566 lprintf(CTDL_ERR, "client_write() failed: %s\n",
568 if (sock == CC->client_socket) CC->kill_me = 1;
571 bytes_written = bytes_written + retval;
577 * cprintf() ... Send formatted printable data to the client. It is
578 * implemented in terms of client_write() but remains in
579 * sysdep.c in case we port to somewhere without va_args...
581 void cprintf(const char *format, ...) {
585 va_start(arg_ptr, format);
586 if (vsnprintf(buf, sizeof buf, format, arg_ptr) == -1)
587 buf[sizeof buf - 2] = '\n';
588 client_write(buf, strlen(buf));
594 * Read data from the client socket.
596 * 1 Requested number of bytes has been read.
597 * 0 Request timed out.
598 * -1 The socket is broken.
599 * If the socket breaks, the session will be terminated.
601 int client_read_to(char *buf, int bytes, int timeout)
609 if (CC->redirect_ssl) {
610 return (client_read_ssl(buf, bytes, timeout));
616 FD_SET(CC->client_socket, &rfds);
620 retval = select( (CC->client_socket)+1,
621 &rfds, NULL, NULL, &tv);
623 if (FD_ISSET(CC->client_socket, &rfds) == 0) {
627 rlen = read(CC->client_socket, &buf[len], bytes-len);
629 lprintf(CTDL_ERR, "client_read() failed: %s\n",
640 * Read data from the client socket with default timeout.
641 * (This is implemented in terms of client_read_to() and could be
642 * justifiably moved out of sysdep.c)
644 INLINE int client_read(char *buf, int bytes)
646 return(client_read_to(buf, bytes, config.c_sleeping));
651 * client_getln() ... Get a LF-terminated line of text from the client.
652 * (This is implemented in terms of client_read() and could be
653 * justifiably moved out of sysdep.c)
655 int client_getln(char *buf, int bufsize)
659 /* Read one character at a time.
662 retval = client_read(&buf[i], 1);
663 if (retval != 1 || buf[i] == '\n' || i == (bufsize-1))
667 /* If we got a long line, discard characters until the newline.
669 if (i == (bufsize-1))
670 while (buf[i] != '\n' && retval == 1)
671 retval = client_read(&buf[i], 1);
673 /* Strip the trailing newline and any trailing nonprintables (cr's)
676 while ((strlen(buf)>0)&&(!isprint(buf[strlen(buf)-1])))
677 buf[strlen(buf)-1] = 0;
678 if (retval < 0) strcpy(buf, "000");
685 * The system-dependent part of master_cleanup() - close the master socket.
687 void sysdep_master_cleanup(void) {
688 struct ServiceFunctionHook *serviceptr;
691 * close all protocol master sockets
693 for (serviceptr = ServiceHookTable; serviceptr != NULL;
694 serviceptr = serviceptr->next ) {
696 if (serviceptr->tcp_port > 0)
697 lprintf(CTDL_INFO, "Closing listener on port %d\n",
698 serviceptr->tcp_port);
700 if (serviceptr->sockpath != NULL)
701 lprintf(CTDL_INFO, "Closing listener on '%s'\n",
702 serviceptr->sockpath);
704 close(serviceptr->msock);
706 /* If it's a Unix domain socket, remove the file. */
707 if (serviceptr->sockpath != NULL) {
708 unlink(serviceptr->sockpath);
715 * Terminate another session.
716 * (This could justifiably be moved out of sysdep.c because it
717 * no longer does anything that is system-dependent.)
719 void kill_session(int session_to_kill) {
720 struct CitContext *ptr;
722 begin_critical_section(S_SESSION_TABLE);
723 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
724 if (ptr->cs_pid == session_to_kill) {
728 end_critical_section(S_SESSION_TABLE);
735 * Start running as a daemon.
737 void start_daemon(int unused) {
738 close(0); close(1); close(2);
741 signal(SIGHUP,SIG_IGN);
742 signal(SIGINT,SIG_IGN);
743 signal(SIGQUIT,SIG_IGN);
749 * Generic routine to convert a login name to a full name (gecos)
750 * Returns nonzero if a conversion took place
752 int convert_login(char NameToConvert[]) {
756 pw = getpwnam(NameToConvert);
761 strcpy(NameToConvert, pw->pw_gecos);
762 for (a=0; a<strlen(NameToConvert); ++a) {
763 if (NameToConvert[a] == ',') NameToConvert[a] = 0;
769 struct worker_node *worker_list = NULL;
773 * create a worker thread. this function must always be called from within
774 * an S_WORKER_LIST critical section!
776 void create_worker(void) {
778 struct worker_node *n;
781 n = malloc(sizeof(struct worker_node));
783 lprintf(CTDL_EMERG, "can't allocate worker_node, exiting\n");
788 if ((ret = pthread_attr_init(&attr))) {
789 lprintf(CTDL_EMERG, "pthread_attr_init: %s\n", strerror(ret));
794 /* Our per-thread stacks need to be bigger than the default size, otherwise
795 * the MIME parser crashes on FreeBSD, and the IMAP service crashes on
798 if ((ret = pthread_attr_setstacksize(&attr, 1024 * 1024))) {
799 lprintf(CTDL_EMERG, "pthread_attr_setstacksize: %s\n", strerror(ret));
801 pthread_attr_destroy(&attr);
805 if ((ret = pthread_create(&n->tid, &attr, worker_thread, NULL) != 0))
808 lprintf(CTDL_ALERT, "Can't create worker thread: %s\n",
812 n->next = worker_list;
814 pthread_attr_destroy(&attr);
820 * Purge all sessions which have the 'kill_me' flag set.
821 * This function has code to prevent it from running more than once every
822 * few seconds, because running it after every single unbind would waste a lot
823 * of CPU time and keep the context list locked too much. To force it to run
824 * anyway, set "force" to nonzero.
827 * After that's done, we raise the size of the worker thread pool
828 * if such an action is appropriate.
830 void dead_session_purge(int force) {
831 struct CitContext *ptr, *rem;
834 if ( (time(NULL) - last_purge) < 5 ) {
835 return; /* Too soon, go away */
842 begin_critical_section(S_SESSION_TABLE);
843 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
844 if ( (ptr->state == CON_IDLE) && (ptr->kill_me) ) {
848 end_critical_section(S_SESSION_TABLE);
850 /* RemoveContext() enters its own S_SESSION_TABLE critical
851 * section, so we have to do it like this.
854 lprintf(CTDL_DEBUG, "Purging session %d\n", rem->cs_pid);
858 } while (rem != NULL);
860 /* Raise the size of the worker thread pool if necessary. */
862 if ( (num_sessions > num_threads)
863 && (num_threads < config.c_max_workers) ) {
864 begin_critical_section(S_WORKER_LIST);
866 end_critical_section(S_WORKER_LIST);
875 * Redirect a session's output to a file or socket.
876 * This function may be called with a file handle *or* a socket (but not
877 * both). Call with neither to return output to its normal client socket.
879 void CtdlRedirectOutput(FILE *fp, int sock) {
881 if (fp != NULL) CC->redirect_fp = fp;
882 else CC->redirect_fp = NULL;
884 if (sock > 0) CC->redirect_sock = sock;
885 else CC->redirect_sock = (-1);
891 * masterCC is the context we use when not attached to a session. This
892 * function initializes it.
894 void InitializeMasterCC(void) {
895 memset(&masterCC, 0, sizeof(struct CitContext));
896 masterCC.internal_pgm = 1;
906 * Bind a thread to a context. (It's inline merely to speed things up.)
908 INLINE void become_session(struct CitContext *which_con) {
909 pthread_setspecific(MyConKey, (void *)which_con );
915 * This loop just keeps going and going and going...
917 void *worker_thread(void *arg) {
920 struct CitContext *ptr;
921 struct CitContext *bind_me = NULL;
924 struct CitContext *con= NULL; /* Temporary context pointer */
925 struct ServiceFunctionHook *serviceptr;
926 int ssock; /* Descriptor for client socket */
935 while (!time_to_die) {
937 /* make doubly sure we're not holding any stale db handles
938 * which might cause a deadlock.
941 do_select: force_purge = 0;
942 bind_me = NULL; /* Which session shall we handle? */
944 /* Initialize the fdset. */
948 begin_critical_section(S_SESSION_TABLE);
949 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
950 if (ptr->state == CON_IDLE) {
951 FD_SET(ptr->client_socket, &readfds);
952 if (ptr->client_socket > highest)
953 highest = ptr->client_socket;
955 if ((bind_me == NULL) && (ptr->state == CON_READY)) {
957 ptr->state = CON_EXECUTING;
960 end_critical_section(S_SESSION_TABLE);
962 if (bind_me) goto SKIP_SELECT;
964 /* If we got this far, it means that there are no sessions
965 * which a previous thread marked for attention, so we go
966 * ahead and get ready to select().
969 /* First, add the various master sockets to the fdset. */
970 for (serviceptr = ServiceHookTable; serviceptr != NULL;
971 serviceptr = serviceptr->next ) {
972 m = serviceptr->msock;
980 tv.tv_sec = 1; /* wake up every second if no input */
982 retval = select(highest + 1, &readfds, NULL, NULL, &tv);
985 if (time_to_die) return(NULL);
987 /* Now figure out who made this select() unblock.
988 * First, check for an error or exit condition.
991 if (errno == EBADF) {
992 lprintf(CTDL_NOTICE, "select() failed: (%s)\n",
996 if (errno != EINTR) {
997 lprintf(CTDL_EMERG, "Exiting (%s)\n", strerror(errno));
999 } else if (!time_to_die)
1003 /* Next, check to see if it's a new client connecting
1004 * on a master socket.
1006 else for (serviceptr = ServiceHookTable; serviceptr != NULL;
1007 serviceptr = serviceptr->next ) {
1009 if (FD_ISSET(serviceptr->msock, &readfds)) {
1010 ssock = accept(serviceptr->msock, NULL, 0);
1013 "citserver: accept(): %s\n",
1018 "New client socket %d\n",
1021 /* New context will be created already
1022 * set up in the CON_EXECUTING state.
1024 con = CreateNewContext();
1026 /* Assign new socket number to it. */
1027 con->client_socket = ssock;
1028 con->h_command_function =
1029 serviceptr->h_command_function;
1030 con->h_async_function =
1031 serviceptr->h_async_function;
1033 /* Determine whether local socket */
1034 if (serviceptr->sockpath != NULL)
1035 con->is_local_socket = 1;
1037 /* Set the SO_REUSEADDR socket option */
1039 setsockopt(ssock, SOL_SOCKET,
1043 become_session(con);
1045 serviceptr->h_greeting_function();
1046 become_session(NULL);
1047 con->state = CON_IDLE;
1053 /* It must be a client socket. Find a context that has data
1054 * waiting on its socket *and* is in the CON_IDLE state. Any
1055 * active sockets other than our chosen one are marked as
1056 * CON_READY so the next thread that comes around can just bind
1057 * to one without having to select() again.
1059 begin_critical_section(S_SESSION_TABLE);
1060 for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
1061 if ( (FD_ISSET(ptr->client_socket, &readfds))
1062 && (ptr->state != CON_EXECUTING) ) {
1063 ptr->input_waiting = 1;
1065 bind_me = ptr; /* I choose you! */
1066 bind_me->state = CON_EXECUTING;
1069 ptr->state = CON_READY;
1073 end_critical_section(S_SESSION_TABLE);
1076 /* We're bound to a session */
1077 if (bind_me != NULL) {
1078 become_session(bind_me);
1080 /* If the client has sent a command, execute it. */
1081 if (CC->input_waiting) {
1082 CC->h_command_function();
1083 CC->input_waiting = 0;
1086 /* If there are asynchronous messages waiting and the
1087 * client supports it, do those now */
1088 if ((CC->is_async) && (CC->async_waiting)
1089 && (CC->h_async_function != NULL)) {
1090 CC->h_async_function();
1091 CC->async_waiting = 0;
1094 force_purge = CC->kill_me;
1095 become_session(NULL);
1096 bind_me->state = CON_IDLE;
1099 dead_session_purge(force_purge);
1101 check_sched_shutdown();
1104 /* If control reaches this point, the server is shutting down */
1113 * Translate text facility name to syslog.h defined value.
1115 int SyslogFacility(char *name)
1124 { LOG_KERN, "kern" },
1125 { LOG_USER, "user" },
1126 { LOG_MAIL, "mail" },
1127 { LOG_DAEMON, "daemon" },
1128 { LOG_AUTH, "auth" },
1129 { LOG_SYSLOG, "syslog" },
1131 { LOG_NEWS, "news" },
1132 { LOG_UUCP, "uucp" },
1133 { LOG_LOCAL0, "local0" },
1134 { LOG_LOCAL1, "local1" },
1135 { LOG_LOCAL2, "local2" },
1136 { LOG_LOCAL3, "local3" },
1137 { LOG_LOCAL4, "local4" },
1138 { LOG_LOCAL5, "local5" },
1139 { LOG_LOCAL6, "local6" },
1140 { LOG_LOCAL7, "local7" },
1143 for(i = 0; facTbl[i].name != NULL; i++) {
1144 if(!strcasecmp(name, facTbl[i].name))
1145 return facTbl[i].facility;
1152 /********** MEM CHEQQER ***********/
1154 #ifdef DEBUG_MEMORY_LEAKS
1161 void *tracked_malloc(size_t size, char *file, int line) {
1162 struct igheap *thisheap;
1165 block = malloc(size);
1166 if (block == NULL) return(block);
1168 thisheap = malloc(sizeof(struct igheap));
1169 if (thisheap == NULL) {
1174 thisheap->block = block;
1175 strcpy(thisheap->file, file);
1176 thisheap->line = line;
1178 begin_critical_section(S_DEBUGMEMLEAKS);
1179 thisheap->next = igheap;
1181 end_critical_section(S_DEBUGMEMLEAKS);
1187 void *tracked_realloc(void *ptr, size_t size, char *file, int line) {
1188 struct igheap *thisheap;
1191 block = realloc(ptr, size);
1192 if (block == NULL) return(block);
1194 thisheap = malloc(sizeof(struct igheap));
1195 if (thisheap == NULL) {
1200 thisheap->block = block;
1201 strcpy(thisheap->file, file);
1202 thisheap->line = line;
1204 begin_critical_section(S_DEBUGMEMLEAKS);
1205 thisheap->next = igheap;
1207 end_critical_section(S_DEBUGMEMLEAKS);
1214 void tracked_free(void *ptr) {
1215 struct igheap *thisheap;
1216 struct igheap *trash;
1220 if (igheap == NULL) return;
1221 begin_critical_section(S_DEBUGMEMLEAKS);
1222 for (thisheap = igheap; thisheap != NULL; thisheap = thisheap->next) {
1223 if (thisheap->next != NULL) {
1224 if (thisheap->next->block == ptr) {
1225 trash = thisheap->next;
1226 thisheap->next = thisheap->next->next;
1231 if (igheap->block == ptr) {
1233 igheap = igheap->next;
1236 end_critical_section(S_DEBUGMEMLEAKS);
1239 char *tracked_strdup(const char *s, char *file, int line) {
1242 if (s == NULL) return(NULL);
1243 ptr = tracked_malloc(strlen(s) + 1, file, line);
1244 if (ptr == NULL) return(NULL);
1245 strncpy(ptr, s, strlen(s));
1249 void dump_heap(void) {
1250 struct igheap *thisheap;
1252 for (thisheap = igheap; thisheap != NULL; thisheap = thisheap->next) {
1253 lprintf(CTDL_CRIT, "UNFREED: %30s : %d\n",
1254 thisheap->file, thisheap->line);
1258 #endif /* DEBUG_MEMORY_LEAKS */