int ScheduledShutdown = 0;
int do_defrag = 0;
time_t server_startup_time;
+char pid_file_name[PATH_MAX];
/*
* Various things that need to be initialized at startup
unsigned int seed;
FILE *urandom;
struct ctdlroom qrbuf;
+ FILE *pidfile_fp;
lprintf(CTDL_DEBUG, "master_startup() started\n");
time(&server_startup_time);
+ /* pid file. If we go FSSTND this should end up in 'localstatedir' */
+ snprintf(pid_file_name, sizeof pid_file_name, "./citadel.pid");
+ pidfile_fp = fopen(pid_file_name, "w");
+ if (pidfile_fp != NULL) {
+ fprintf(pidfile_fp, "%d\n", (int)getpid());
+ fclose(pidfile_fp);
+ }
+
lprintf(CTDL_INFO, "Opening databases\n");
open_databases();
check_ref_counts();
lprintf(CTDL_INFO, "Creating base rooms (if necessary)\n");
- create_room(BASEROOM, 0, "", 0, 1, 0);
- create_room(AIDEROOM, 3, "", 0, 1, 0);
- create_room(SYSCONFIGROOM, 3, "", 0, 1, 0);
- create_room(config.c_twitroom, 0, "", 0, 1, 0);
+ create_room(BASEROOM, 0, "", 0, 1, 0, VIEW_BBS);
+ create_room(AIDEROOM, 3, "", 0, 1, 0, VIEW_BBS);
+ create_room(SYSCONFIGROOM, 3, "", 0, 1, 0, VIEW_BBS);
+ create_room(config.c_twitroom, 0, "", 0, 1, 0, VIEW_BBS);
/* The "Local System Configuration" room doesn't need to be visible */
if (lgetroom(&qrbuf, SYSCONFIGROOM) == 0) {
/*
* Cleanup routine to be called when the server is shutting down.
- * WARNING: It's no longer safe to call this function to force a shutdown.
- * Instead, set time_to_die = 1.
*/
-void master_cleanup(void) {
+void master_cleanup(int exitcode) {
struct CleanupFunctionHook *fcn;
+ static int already_cleaning_up = 0;
+
+ if (already_cleaning_up) while(1) sleep(1);
+ already_cleaning_up = 1;
/* Run any cleanup routines registered by loadable modules */
for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
#endif
/* Now go away. */
- lprintf(CTDL_NOTICE, "citserver: exiting.\n");
+ lprintf(CTDL_NOTICE, "citserver: Exiting with status %d\n", exitcode);
fflush(stdout); fflush(stderr);
- exit(0);
-}
-
-/*
- * Free any per-session data allocated by modules or whatever
- */
-void deallocate_user_data(struct CitContext *con)
-{
- struct CtdlSessData *ptr;
-
- begin_critical_section(S_SESSION_TABLE);
- while (con->FirstSessData != NULL) {
- lprintf(CTDL_DEBUG, "Deallocating user data symbol %ld\n",
- con->FirstSessData->sym_id);
- if (con->FirstSessData->sym_data != NULL)
- free(con->FirstSessData->sym_data);
- ptr = con->FirstSessData->next;
- free(con->FirstSessData);
- con->FirstSessData = ptr;
- }
- end_critical_section(S_SESSION_TABLE);
+ unlink(pid_file_name);
+ exit(exitcode);
}
-
/*
- * Terminate a session and remove its context data structure.
+ * Terminate a session.
*/
void RemoveContext (struct CitContext *con)
{
- struct CitContext *ptr = NULL;
- struct CitContext *ToFree = NULL;
-
if (con==NULL) {
- lprintf(CTDL_ERR, "WARNING: RemoveContext() called with NULL!\n");
- return;
- }
- lprintf(CTDL_DEBUG, "RemoveContext() called\n");
-
- /* Remove the context from the global context list. This needs
- * to get done FIRST to avoid concurrency problems. It is *vitally*
- * important to keep num_sessions accurate!!
- */
- lprintf(CTDL_DEBUG, "Removing context for session %d\n", con->cs_pid);
- begin_critical_section(S_SESSION_TABLE);
- if (ContextList == con) {
- ToFree = ContextList;
- ContextList = ContextList->next;
- --num_sessions;
- }
- else {
- for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
- if (ptr->next == con) {
- /* See fair scheduling in sysdep.c */
- if (next_session == ptr->next)
- next_session = ptr->next->next;
- ToFree = ptr->next;
- ptr->next = ptr->next->next;
- --num_sessions;
- }
- }
- }
- end_critical_section(S_SESSION_TABLE);
-
- if (ToFree == NULL) {
- lprintf(CTDL_DEBUG, "RemoveContext() found nothing to remove\n");
+ lprintf(CTDL_ERR,
+ "WARNING: RemoveContext() called with NULL!\n");
return;
}
+ lprintf(CTDL_DEBUG, "RemoveContext() session %d\n", con->cs_pid);
/* Run any cleanup routines registered by loadable modules.
- * Note 1: This must occur *before* deallocate_user_data() because the
- * cleanup functions might touch dynamic session data.
- * Note 2: We have to "become_session()" because the cleanup functions
- * might make references to "CC" assuming it's the right one.
+ * Note: We have to "become_session()" because the cleanup functions
+ * might make references to "CC" assuming it's the right one.
*/
become_session(con);
PerformSessionHooks(EVT_STOP);
logout(con);
unlink(con->temp);
- lprintf(CTDL_NOTICE, "Session %d: ended.\n", con->cs_pid);
-
- /* Deallocate any user-data attached to this session */
- deallocate_user_data(con);
+ lprintf(CTDL_NOTICE, "[%3d] Session ended.\n", con->cs_pid);
/* If the client is still connected, blow 'em away. */
lprintf(CTDL_DEBUG, "Closing socket %d\n", con->client_socket);
close(con->client_socket);
- /* This is where we used to check for scheduled shutdowns. */
-
- /* Free up the memory used by this context */
- free(con);
-
lprintf(CTDL_DEBUG, "Done with RemoveContext()\n");
}
-/*
- * Return a pointer to some generic per-session user data.
- * (This function returns NULL if the requested symbol is not allocated.)
- *
- * NOTE: we use critical sections for allocating and de-allocating these,
- * but not for locating one.
- */
-void *CtdlGetUserData(unsigned long requested_sym)
-{
- struct CtdlSessData *ptr;
-
- for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next)
- if (ptr->sym_id == requested_sym)
- return(ptr->sym_data);
-
- lprintf(CTDL_ERR, "ERROR! CtdlGetUserData(%ld) symbol not allocated\n",
- requested_sym);
- return NULL;
-}
-
-
-/*
- * Allocate some generic per-session user data.
- */
-void CtdlAllocUserData(unsigned long requested_sym, size_t num_bytes)
-{
- struct CtdlSessData *ptr;
-
- lprintf(CTDL_DEBUG, "CtdlAllocUserData(%ld) called\n", requested_sym);
-
- /* Fail silently if the symbol is already registered. */
- for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next) {
- if (ptr->sym_id == requested_sym) {
- return;
- }
- }
-
- /* Grab us some memory! Dem's good eatin' !! */
- ptr = malloc(sizeof(struct CtdlSessData));
- ptr->sym_id = requested_sym;
- ptr->sym_data = malloc(num_bytes);
- memset(ptr->sym_data, 0, num_bytes);
-
- begin_critical_section(S_SESSION_TABLE);
- ptr->next = CC->FirstSessData;
- CC->FirstSessData = ptr;
- end_critical_section(S_SESSION_TABLE);
-
- lprintf(CTDL_DEBUG, "CtdlAllocUserData(%ld) finished\n", requested_sym);
-}
-
-
-/*
- * Change the size of a buffer allocated with CtdlAllocUserData()
- */
-void CtdlReallocUserData(unsigned long requested_sym, size_t num_bytes)
-{
- struct CtdlSessData *ptr;
-
- for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next) {
- if (ptr->sym_id == requested_sym) {
- ptr->sym_data = realloc(ptr->sym_data, num_bytes);
- return;
- }
- }
-
- lprintf(CTDL_ERR, "CtdlReallocUserData() ERROR: symbol %ld not found!\n",
- requested_sym);
-}
-
-
-
-
-
-
/*
* cmd_info() - tell the client about this server
*/
cprintf("%s\n", config.c_fqdn);
cprintf("%s\n", CITADEL);
cprintf("%d\n", REV_LEVEL);
- cprintf("%s\n", config.c_bbs_city);
+ cprintf("%s\n", config.c_site_location);
cprintf("%s\n", config.c_sysadm);
cprintf("%d\n", SERVER_TYPE);
cprintf("%s\n", config.c_moreprompt);
void cmd_time(void)
{
time_t tv;
- struct tm *tmp;
+ struct tm tmp;
tv = time(NULL);
- tmp = localtime(&tv);
+ localtime_r(&tv, &tmp);
/* timezone and daylight global variables are not portable. */
#ifdef HAVE_STRUCT_TM_TM_GMTOFF
- cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, tmp->tm_gmtoff, tmp->tm_isdst);
+ cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, tmp.tm_gmtoff, tmp.tm_isdst);
#else
- cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, timezone, tmp->tm_isdst);
+ cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, timezone, tmp.tm_isdst);
#endif
}
*/
int is_public_client(void)
{
- char buf[SIZ];
- char addrbuf[SIZ];
+ char buf[1024];
+ char addrbuf[1024];
FILE *fp;
int i;
struct stat statbuf;
begin_critical_section(S_PUBLIC_CLIENTS);
lprintf(CTDL_INFO, "Loading %s\n", PUBLIC_CLIENTS);
- strcpy(public_clients, "127.0.0.1");
+ safestrncpy(public_clients, "127.0.0.1", sizeof public_clients);
if (hostname_to_dotted_quad(addrbuf, config.c_fqdn) == 0) {
strcat(public_clients, "|");
strcat(public_clients, addrbuf);
lprintf(CTDL_DEBUG, "Checking whether %s is a local or public client\n",
CC->cs_addr);
for (i=0; i<num_parms(public_clients); ++i) {
- extract(addrbuf, public_clients, i);
+ extract_token(addrbuf, public_clients, i, '|', sizeof addrbuf);
if (!strcasecmp(CC->cs_addr, addrbuf)) {
lprintf(CTDL_DEBUG, "... yes it is.\n");
return(1);
int dev_code;
int cli_code;
int rev_level;
- char desc[SIZ];
- char from_host[SIZ];
+ char desc[128];
+ char from_host[128];
struct in_addr addr;
int do_lookup = 0;
dev_code = extract_int(argbuf,0);
cli_code = extract_int(argbuf,1);
rev_level = extract_int(argbuf,2);
- extract(desc,argbuf,3);
+ extract_token(desc, argbuf, 3, '|', sizeof desc);
safestrncpy(from_host, config.c_fqdn, sizeof from_host);
from_host[sizeof from_host - 1] = 0;
- if (num_parms(argbuf)>=5) extract(from_host,argbuf,4);
+ if (num_parms(argbuf)>=5) extract_token(from_host, argbuf, 4, '|', sizeof from_host);
CC->cs_clientdev = dev_code;
CC->cs_clienttyp = cli_code;
void cmd_mesg(char *mname)
{
FILE *mfp;
- char targ[SIZ];
- char buf[SIZ];
- char buf2[SIZ];
+ char targ[256];
+ char buf[256];
+ char buf2[256];
char *dirs[2];
- extract(buf,mname,0);
+ extract_token(buf, mname, 0, '|', sizeof buf);
- dirs[0]=malloc(64);
- dirs[1]=malloc(64);
- strcpy(dirs[0],"messages");
- strcpy(dirs[1],"help");
+ dirs[0] = strdup("messages");
+ dirs[1] = strdup("help");
snprintf(buf2, sizeof buf2, "%s.%d.%d", buf, CC->cs_clientdev, CC->cs_clienttyp);
- mesg_locate(targ,sizeof targ,buf2,2,(const char **)dirs);
+ mesg_locate(targ, sizeof targ, buf2, 2, (const char **)dirs);
if (strlen(targ) == 0) {
snprintf(buf2, sizeof buf2, "%s.%d", buf, CC->cs_clientdev);
- mesg_locate(targ,sizeof targ,buf2,2,(const char **)dirs);
+ mesg_locate(targ, sizeof targ, buf2, 2, (const char **)dirs);
if (strlen(targ) == 0) {
- mesg_locate(targ,sizeof targ,buf,2,(const char **)dirs);
+ mesg_locate(targ, sizeof targ, buf, 2, (const char **)dirs);
}
}
free(dirs[0]);
}
cprintf("%d %s\n",LISTING_FOLLOWS,buf);
- while (fgets(buf, (SIZ-1), mfp)!=NULL) {
+ while (fgets(buf, (sizeof buf - 1), mfp) != NULL) {
buf[strlen(buf)-1] = 0;
do_help_subst(buf);
cprintf("%s\n",buf);
void cmd_emsg(char *mname)
{
FILE *mfp;
- char targ[SIZ];
- char buf[SIZ];
+ char targ[256];
+ char buf[256];
char *dirs[2];
int a;
+ unbuffer_output();
+
if (CtdlAccessCheck(ac_aide)) return;
- extract(buf,mname,0);
+ extract_token(buf, mname, 0, '|', sizeof buf);
for (a=0; a<strlen(buf); ++a) { /* security measure */
if (buf[a] == '/') buf[a] = '.';
}
- dirs[0]=malloc(64);
- dirs[1]=malloc(64);
- strcpy(dirs[0],"messages");
- strcpy(dirs[1],"help");
- mesg_locate(targ,sizeof targ,buf,2,(const char**)dirs);
+ dirs[0] = strdup("messages");
+ dirs[1] = strdup("help");
+ mesg_locate(targ, sizeof targ, buf, 2, (const char**)dirs);
free(dirs[0]);
free(dirs[1]);
}
cprintf("%d %s\n", SEND_LISTING, targ);
- while (client_gets(buf), strcmp(buf, "000")) {
+ while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
fprintf(mfp, "%s\n", buf);
}
struct CitContext *viewed,
struct CitContext *viewer) {
+ int ra;
+
strcpy(real_room, viewed->room.QRname);
if (viewed->room.QRflags & QR_MAILBOX) {
strcpy(real_room, &real_room[11]);
}
if (viewed->room.QRflags & QR_PRIVATE) {
- if ( (CtdlRoomAccess(&viewed->room, &viewer->user)
- & UA_KNOWN) == 0) {
+ CtdlRoomAccess(&viewed->room, &viewer->user, &ra, NULL);
+ if ( (ra & UA_KNOWN) == 0) {
strcpy(real_room, "<private room>");
}
}
return(-1);
}
+ if ((required_level >= ac_logged_in) && (CC->logged_in == 0)) {
+ cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
+ return(-1);
+ }
+
if (CC->user.axlevel >= 6) return(0);
if (required_level >= ac_aide) {
cprintf("%d This command requires Aide access.\n",
return(-1);
}
- if (CC->logged_in) return(0);
- if (required_level >= ac_logged_in) {
- cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
- return(-1);
- }
-
/* shhh ... succeed quietly */
return(0);
}
*/
if (!CC->is_local_socket) {
sleep(5);
- cprintf("%d Authentication failed.\n", ERROR + PASSWORD_REQUIRED);
+ cprintf("%d Authentication failed.\n",
+ ERROR + PASSWORD_REQUIRED);
}
else if (secret == config.c_ipgm_secret) {
CC->internal_pgm = 1;
}
else {
sleep(5);
- cprintf("%d Authentication failed.\n", ERROR + PASSWORD_REQUIRED);
+ cprintf("%d Authentication failed.\n",
+ ERROR + PASSWORD_REQUIRED);
lprintf(CTDL_ERR, "Warning: ipgm authentication failed.\n");
CC->kill_me = 1;
}
- /* Now change the ipgm secret for the next round. */
+ /* Now change the ipgm secret for the next round.
+ * (Disabled because it breaks concurrent scripts. The fact that
+ * we no longer accept IPGM over the network should be sufficient
+ * to prevent brute-force attacks. If you don't agree, uncomment
+ * this block.)
get_config();
config.c_ipgm_secret = rand();
put_config();
+ */
}
*/
void begin_session(struct CitContext *con)
{
- int len; /* should be socklen_t but doesn't work on Macintosh */
+ int len;
struct sockaddr_in sin;
/*
strcpy(con->fake_hostname, "");
strcpy(con->fake_roomname, "");
generate_nonce(con);
- snprintf(con->temp, sizeof con->temp, tmpnam(NULL));
+ safestrncpy(con->temp, tmpnam(NULL), sizeof con->temp);
safestrncpy(con->cs_host, config.c_fqdn, sizeof con->cs_host);
safestrncpy(con->cs_addr, "", sizeof con->cs_addr);
con->cs_host[sizeof con->cs_host - 1] = 0;
len = sizeof sin;
if (!CC->is_local_socket) {
if (!getpeername(con->client_socket,
- (struct sockaddr *) &sin, &len))
+ (struct sockaddr *) &sin, &len)) /* should be socklen_t but doesn't work on Macintosh */
locate_host(con->cs_host, sizeof con->cs_host,
con->cs_addr, sizeof con->cs_addr,
&sin.sin_addr);
con->cs_flags = 0;
con->upload_type = UPL_FILE;
con->dl_is_net = 0;
- con->FirstSessData = NULL;
con->nologin = 0;
if ((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions))
config.c_nodename, config.c_maxsessions);
}
else {
- cprintf("%d %s Citadel/UX server ready.\n",
+ cprintf("%d %s Citadel server ready.\n",
CIT_OK, config.c_nodename);
}
}
* This loop recognizes all server commands.
*/
void do_command_loop(void) {
- char cmdbuf[SIZ];
+ char cmdbuf[1024];
time(&CC->lastcmd);
memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
- if (client_gets(cmdbuf) < 1) {
- lprintf(CTDL_ERR, "Client socket is broken. Ending session.\n");
+ if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
+ lprintf(CTDL_ERR, "Client socket is broken; ending session\n");
CC->kill_me = 1;
return;
}
- lprintf(CTDL_INFO, "Citadel: %s\n", cmdbuf);
+
+ /* Log the server command, but don't show passwords... */
+ if ( (strncasecmp(cmdbuf, "PASS", 4))
+ && (strncasecmp(cmdbuf, "SETP", 4)) ) {
+ lprintf(CTDL_INFO, "%s\n", cmdbuf);
+ }
+ else {
+ lprintf(CTDL_INFO, "<password command sent>\n");
+ }
+
+ buffer_output();
/*
* Let other clients see the last command we executed, and
&& (strncasecmp(cmdbuf, "PEXP", 4))
&& (strncasecmp(cmdbuf, "GEXP", 4)) ) {
strcpy(CC->lastcmdname, " ");
- safestrncpy(CC->lastcmdname, cmdbuf,
- sizeof(CC->lastcmdname) );
+ safestrncpy(CC->lastcmdname, cmdbuf, sizeof(CC->lastcmdname));
time(&CC->lastidle);
}
CC->cs_flags &= ~CS_POSTING;
}
- if (!strncasecmp(cmdbuf,"NOOP",4)) {
- cprintf("%d%cok\n",CIT_OK,CtdlCheckExpress());
+ if (!strncasecmp(cmdbuf, "NOOP", 4)) {
+ cprintf("%d%cok\n", CIT_OK, CtdlCheckExpress() );
}
- else if (!strncasecmp(cmdbuf,"QNOP",4)) {
+ else if (!strncasecmp(cmdbuf, "QNOP", 4)) {
/* do nothing, this command returns no response */
}
else if (!strncasecmp(cmdbuf,"QUIT",4)) {
- cprintf("%d Goodbye.\n",CIT_OK);
+ cprintf("%d Goodbye.\n", CIT_OK);
CC->kill_me = 1;
}
else if (!strncasecmp(cmdbuf,"LOUT",4)) {
if (CC->logged_in) logout(CC);
- cprintf("%d logged out.\n",CIT_OK);
+ cprintf("%d logged out.\n", CIT_OK);
}
else if (!strncasecmp(cmdbuf,"USER",4)) {
}
else if (!DLoader_Exec_Cmd(cmdbuf)) {
- cprintf("%d Unrecognized or unsupported command.\n", ERROR + CMD_NOT_SUPPORTED);
+ cprintf("%d Unrecognized or unsupported command.\n",
+ ERROR + CMD_NOT_SUPPORTED);
}
- /* Run any after-each-command outines registered by modules */
+ unbuffer_output();
+
+ /* Run any after-each-command routines registered by modules */
PerformSessionHooks(EVT_CMD);
}
+
+
+/*
+ * This loop performs all asynchronous functions.
+ */
+void do_async_loop(void) {
+ PerformSessionHooks(EVT_ASYNC);
+}
projects / citadel.git / blobdiff