/*
* Main source module for the Citadel server
*
- * Copyright (c) 1987-2011 by the citadel.org team
+ * Copyright (c) 1987-2017 by the citadel.org team
*
* This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 3.
* GNU General Public License for more details.
*/
-#include "sysdep.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/types.h>
#include <sys/stat.h>
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
+#include "sysdep.h"
+#include <time.h>
#if HAVE_BACKTRACE
#include <execinfo.h>
#endif
-
-#include <ctype.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <netdb.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "sysdep_decls.h"
-#include "threads.h"
-#include "citserver.h"
-#include "config.h"
-#include "database.h"
+
+#include "ctdl_module.h"
#include "housekeeping.h"
-#include "user_ops.h"
-#include "msgbase.h"
-#include "support.h"
#include "locate_host.h"
-#include "room_ops.h"
+#include "citserver.h"
+#include "user_ops.h"
#include "control.h"
-#include "euidindex.h"
-#include "context.h"
-#include "svn_revision.h"
-#include "ctdl_module.h"
+#include "config.h"
char *unique_session_numbers;
int ScheduledShutdown = 0;
size_t size, i;
char **strings;
-
+ const char *p = IOSTR;
+ if (p == NULL) p = "";
size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
strings = backtrace_symbols(stack_frames, size);
for (i = 0; i < size; i++) {
- if (strings != NULL)
- syslog(LOG_ALERT, "%s\n", strings[i]);
- else
- syslog(LOG_ALERT, "%p\n", stack_frames[i]);
+ if (strings != NULL) {
+ syslog(LOG_DEBUG, "citserver: %s %s", p, strings[i]);
+ }
+ else {
+ syslog(LOG_DEBUG, "citserver: %s %p", p, stack_frames[i]);
+ }
}
free(strings);
#endif
StrBufAppendPrintf(Buf, "%p : ", stack_frames[i]);
}
free(strings);
- syslog(LOG_ALERT, "%s\n", ChrPtr(Buf));
+ syslog(LOG_DEBUG, "citserver: %s %s", IOSTR, ChrPtr(Buf));
FreeStrBuf(&Buf);
}
#endif
}
+
/*
* print the actual stack frame.
*/
size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
strings = backtrace_symbols(stack_frames, size);
for (i = 0; i < size; i++) {
- if (strings != NULL)
- syslog(LOG_ALERT, "%s\n", strings[i]);
- else
- syslog(LOG_ALERT, "%p\n", stack_frames[i]);
+ if (strings != NULL) {
+ syslog(LOG_DEBUG, "%s", strings[i]);
+ }
+ else {
+ syslog(LOG_DEBUG, "%p", stack_frames[i]);
+ }
}
free(strings);
#endif
FILE *urandom;
struct ctdlroom qrbuf;
int rv;
+ struct passwd *pw;
+ gid_t gid;
- syslog(LOG_DEBUG, "master_startup() started\n");
+ syslog(LOG_DEBUG, "master_startup() started");
time(&server_startup_time);
- get_config();
- syslog(LOG_INFO, "Opening databases\n");
+ syslog(LOG_INFO, "Checking directory access");
+ if ((pw = getpwuid(ctdluid)) == NULL) {
+ gid = getgid();
+ } else {
+ gid = pw->pw_gid;
+ }
+
+ if (create_run_directories(CTDLUID, gid) != 0) {
+ syslog(LOG_EMERG, "failed to access & create directories");
+ exit(1);
+ }
+ syslog(LOG_INFO, "Opening databases");
open_databases();
+
+ /* Load site-specific configuration */
+ syslog(LOG_INFO, "Initializing configuration system");
+ initialize_config_system();
+ validate_config();
+ migrate_legacy_control_record();
+
+ /* Check floor reference counts */
check_ref_counts();
- syslog(LOG_INFO, "Creating base rooms (if necessary)\n");
- CtdlCreateRoom(config.c_baseroom, 0, "", 0, 1, 0, VIEW_BBS);
- CtdlCreateRoom(AIDEROOM, 3, "", 0, 1, 0, VIEW_BBS);
- CtdlCreateRoom(SYSCONFIGROOM, 3, "", 0, 1, 0, VIEW_BBS);
- CtdlCreateRoom(config.c_twitroom, 0, "", 0, 1, 0, VIEW_BBS);
+ syslog(LOG_INFO, "Creating base rooms (if necessary)");
+ CtdlCreateRoom(CtdlGetConfigStr("c_baseroom"), 0, "", 0, 1, 0, VIEW_BBS);
+ CtdlCreateRoom(AIDEROOM, 3, "", 0, 1, 0, VIEW_BBS);
+ CtdlCreateRoom(SYSCONFIGROOM, 3, "", 0, 1, 0, VIEW_BBS);
+ CtdlCreateRoom(CtdlGetConfigStr("c_twitroom"), 0, "", 0, 1, 0, VIEW_BBS);
/* The "Local System Configuration" room doesn't need to be visible */
if (CtdlGetRoomLock(&qrbuf, SYSCONFIGROOM) == 0) {
CtdlPutRoomLock(&qrbuf);
}
- syslog(LOG_INFO, "Seeding the pseudo-random number generator...\n");
+ syslog(LOG_INFO, "Seeding the pseudo-random number generator...");
urandom = fopen("/dev/urandom", "r");
if (urandom != NULL) {
rv = fread(&seed, sizeof seed, 1, urandom);
- if (rv == -1)
- syslog(LOG_EMERG, "failed to read random seed: %s\n",
- strerror(errno));
+ if (rv == -1) {
+ syslog(LOG_ERR, "citserver: failed to read random seed: %m");
+ }
fclose(urandom);
}
else {
srand(seed);
srandom(seed);
- put_config();
-
- syslog(LOG_DEBUG, "master_startup() finished\n");
+ syslog(LOG_DEBUG, "master_startup() finished");
}
/*
- * Cleanup routine to be called when the server is shutting down.
+ * Cleanup routine to be called when the server is shutting down. Returns the needed exit code.
*/
-void master_cleanup(int exitcode) {
+int master_cleanup(int exitcode) {
struct CleanupFunctionHook *fcn;
static int already_cleaning_up = 0;
/* Do system-dependent stuff */
sysdep_master_cleanup();
+
+ /* Close the configuration system */
+ shutdown_config_system();
/* Close databases */
syslog(LOG_INFO, "Closing databases\n");
/* If the operator requested a halt but not an exit, halt here. */
if (shutdown_and_halt) {
- syslog(LOG_NOTICE, "citserver: Halting server without exiting.\n");
+ syslog(LOG_ERR, "citserver: Halting server without exiting.");
fflush(stdout); fflush(stderr);
while(1) {
sleep(32767);
}
}
- release_control();
-
/* Now go away. */
- syslog(LOG_NOTICE, "citserver: Exiting with status %d\n", exitcode);
+ syslog(LOG_ERR, "citserver: Exiting with status %d", exitcode);
fflush(stdout); fflush(stderr);
- if (restart_server != 0)
- exit(1);
- if ((running_as_daemon != 0) && ((exitcode == 0) ))
+ if (restart_server != 0) {
+ exitcode = 1;
+ }
+ else if ((running_as_daemon != 0) && ((exitcode == 0) )) {
exitcode = CTDLEXIT_SHUTDOWN;
- exit(exitcode);
+ }
+ return(exitcode);
}
*/
if (stat(public_clients_file, &statbuf) != 0) {
/* No public_clients file exists, so bail out */
- syslog(LOG_WARNING, "Warning: '%s' does not exist\n",
- public_clients_file);
+ syslog(LOG_WARNING, "Warning: '%s' does not exist", public_clients_file);
return(0);
}
if (statbuf.st_mtime > pc_timestamp) {
begin_critical_section(S_PUBLIC_CLIENTS);
- syslog(LOG_INFO, "Loading %s\n", public_clients_file);
+ syslog(LOG_INFO, "Loading %s", public_clients_file);
public_clientspos = &public_clients[0];
public_clientsend = public_clientspos + SIZ;
safestrncpy(public_clientspos, LOCALHOSTSTR, sizeof public_clients);
public_clientspos += sizeof(LOCALHOSTSTR) - 1;
- if (hostname_to_dotted_quad(addrbuf, config.c_fqdn) == 0) {
+ if (hostname_to_dotted_quad(addrbuf, CtdlGetConfigStr("c_fqdn")) == 0) {
*(public_clientspos++) = '|';
paddr = &addrbuf[0];
while (!IsEmptyStr (paddr) &&
end_critical_section(S_PUBLIC_CLIENTS);
}
- syslog(LOG_DEBUG, "Checking whether %s is a local or public client\n",
- CC->cs_addr);
+ syslog(LOG_DEBUG, "Checking whether %s is a local or public client", CC->cs_addr);
for (i=0; i<num_parms(public_clients); ++i) {
extract_token(addrbuf, public_clients, i, '|', sizeof addrbuf);
if (!strcasecmp(CC->cs_addr, addrbuf)) {
- syslog(LOG_DEBUG, "... yes its local.\n");
+ syslog(LOG_DEBUG, "... yes its local.");
return(1);
}
}
/* No hits. This is not a public client. */
- syslog(LOG_DEBUG, "... no it isn't.\n");
+ syslog(LOG_DEBUG, "... no it isn't.");
return(0);
}
-/*
- * Convenience function.
- */
-int CtdlAccessCheck(int required_level) {
-
- if (CC->internal_pgm) return(0);
- if (required_level >= ac_internal) {
- cprintf("%d This is not a user-level command.\n",
- ERROR + HIGHER_ACCESS_REQUIRED);
- return(-1);
- }
-
- if ((required_level >= ac_logged_in_or_guest) && (CC->logged_in == 0) && (!config.c_guest_logins)) {
- cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
- 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 >= AxAideU) return(0);
- if (required_level >= ac_aide) {
- cprintf("%d This command requires Admin access.\n",
- ERROR + HIGHER_ACCESS_REQUIRED);
- return(-1);
- }
-
- if (is_room_aide()) return(0);
- if (required_level >= ac_room_aide) {
- cprintf("%d This command requires Admin or Room Admin access.\n",
- ERROR + HIGHER_ACCESS_REQUIRED);
- return(-1);
- }
-
- /* shhh ... succeed quietly */
- return(0);
-}
-
-
-
-
-
-
-
-
-/*
- * Back-end function for starting a session
- */
-void begin_session(CitContext *con)
-{
- /*
- * Initialize some variables specific to our context.
- */
- con->logged_in = 0;
- con->internal_pgm = 0;
- con->download_fp = NULL;
- con->upload_fp = NULL;
- con->cached_msglist = NULL;
- con->cached_num_msgs = 0;
- con->FirstExpressMessage = NULL;
- time(&con->lastcmd);
- time(&con->lastidle);
- strcpy(con->lastcmdname, " ");
- strcpy(con->cs_clientname, "(unknown)");
- strcpy(con->curr_user, NLI);
- *con->net_node = '\0';
- *con->fake_username = '\0';
- *con->fake_hostname = '\0';
- *con->fake_roomname = '\0';
- *con->cs_clientinfo = '\0';
- safestrncpy(con->cs_host, config.c_fqdn, sizeof con->cs_host);
- safestrncpy(con->cs_addr, "", sizeof con->cs_addr);
- con->cs_UDSclientUID = -1;
- con->cs_host[sizeof con->cs_host - 1] = 0;
- if (!CC->is_local_socket) {
- locate_host(con->cs_host, sizeof con->cs_host,
- con->cs_addr, sizeof con->cs_addr,
- con->client_socket
- );
- }
- else {
- con->cs_host[0] = 0;
- con->cs_addr[0] = 0;
-#ifdef HAVE_STRUCT_UCRED
- {
- /* as http://www.wsinnovations.com/softeng/articles/uds.html told us... */
- struct ucred credentials;
- socklen_t ucred_length = sizeof(struct ucred);
-
- /*fill in the user data structure */
- if(getsockopt(con->client_socket, SOL_SOCKET, SO_PEERCRED, &credentials, &ucred_length)) {
- syslog(LOG_NOTICE, "could obtain credentials from unix domain socket");
-
- }
- else {
- /* the process ID of the process on the other side of the socket */
- /* credentials.pid; */
-
- /* the effective UID of the process on the other side of the socket */
- con->cs_UDSclientUID = credentials.uid;
-
- /* the effective primary GID of the process on the other side of the socket */
- /* credentials.gid; */
-
- /* To get supplemental groups, we will have to look them up in our account
- database, after a reverse lookup on the UID to get the account name.
- We can take this opportunity to check to see if this is a legit account.
- */
- snprintf(con->cs_clientinfo, sizeof(con->cs_clientinfo),
- "PID: "F_PID_T"; UID: "F_UID_T"; GID: "F_XPID_T" ",
- credentials.pid,
- credentials.uid,
- credentials.gid);
- }
- }
-#endif
- }
- con->cs_flags = 0;
- con->upload_type = UPL_FILE;
- con->dl_is_net = 0;
-
- con->nologin = 0;
- if (((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions)) || CtdlWantSingleUser()) {
- con->nologin = 1;
- }
-
- if (!CC->is_local_socket) {
- syslog(LOG_NOTICE, "Session (%s) started from %s (%s).\n", con->ServiceName, con->cs_host, con->cs_addr);
- }
- else {
- syslog(LOG_NOTICE, "Session (%s) started via local socket UID:%d.\n", con->ServiceName, con->cs_UDSclientUID);
- }
-
- /* Run any session startup routines registered by loadable modules */
- PerformSessionHooks(EVT_START);
-}
-
void citproto_begin_session() {
if (CC->nologin==1) {
cprintf("%d %s: Too many users are already online (maximum is %d)\n",
ERROR + MAX_SESSIONS_EXCEEDED,
- config.c_nodename, config.c_maxsessions
+ CtdlGetConfigStr("c_nodename"), CtdlGetConfigInt("c_maxsessions")
);
CC->kill_me = KILLME_MAX_SESSIONS_EXCEEDED;
}
else {
- cprintf("%d %s Citadel server ready.\n", CIT_OK, config.c_nodename);
+ cprintf("%d %s Citadel server ready.\n", CIT_OK, CtdlGetConfigStr("c_nodename"));
CC->can_receive_im = 1;
}
}
void citproto_begin_admin_session() {
CC->internal_pgm = 1;
- cprintf("%d %s Citadel server ADMIN CONNECTION ready.\n", CIT_OK, config.c_nodename);
-}
-
-
-
-
-/*
- * This loop recognizes all server commands.
- */
-void do_command_loop(void) {
- char cmdbuf[SIZ];
-
- time(&CC->lastcmd);
- memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
- if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
- syslog(LOG_ERR, "Citadel client disconnected: ending session.\n");
- CC->kill_me = KILLME_CLIENT_DISCONNECTED;
- return;
- }
-
- /* Log the server command, but don't show passwords... */
- if ( (strncasecmp(cmdbuf, "PASS", 4)) && (strncasecmp(cmdbuf, "SETP", 4)) ) {
- syslog(LOG_INFO, "[%d][%s(%ld)] %s",
- CC->cs_pid, CC->curr_user, CC->user.usernum, cmdbuf
- );
- }
- else {
- syslog(LOG_INFO, "[%d][%s(%ld)] <password command hidden from log>",
- CC->cs_pid, CC->curr_user, CC->user.usernum
- );
- }
-
- buffer_output();
-
- /*
- * Let other clients see the last command we executed, and
- * update the idle time, but not NOOP, QNOP, PEXP, GEXP, RWHO, or TIME.
- */
- if ( (strncasecmp(cmdbuf, "NOOP", 4))
- && (strncasecmp(cmdbuf, "QNOP", 4))
- && (strncasecmp(cmdbuf, "PEXP", 4))
- && (strncasecmp(cmdbuf, "GEXP", 4))
- && (strncasecmp(cmdbuf, "RWHO", 4))
- && (strncasecmp(cmdbuf, "TIME", 4)) ) {
- strcpy(CC->lastcmdname, " ");
- safestrncpy(CC->lastcmdname, cmdbuf, sizeof(CC->lastcmdname));
- time(&CC->lastidle);
- }
-
- if ((strncasecmp(cmdbuf, "ENT0", 4))
- && (strncasecmp(cmdbuf, "MESG", 4))
- && (strncasecmp(cmdbuf, "MSGS", 4)))
- {
- CC->cs_flags &= ~CS_POSTING;
- }
-
- if (!DLoader_Exec_Cmd(cmdbuf)) {
- cprintf("%d Unrecognized or unsupported command.\n", ERROR + CMD_NOT_SUPPORTED);
- }
-
- unbuffer_output();
-
- /* Run any after-each-command routines registered by modules */
- PerformSessionHooks(EVT_CMD);
+ cprintf("%d %s Citadel server ADMIN CONNECTION ready.\n", CIT_OK, CtdlGetConfigStr("c_nodename"));
}