+++ /dev/null
-/*
- * citserver's main() function lives here.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <grp.h>
-#include <sys/file.h>
-#include <libcitadel.h>
-
-#include "citserver.h"
-#include "svn_revision.h"
-#include "modules_init.h"
-#include "config.h"
-#include "control.h"
-#include "serv_extensions.h"
-#include "citadel_dirs.h"
-#include "user_ops.h"
-#include "ecrash.h"
-
-uid_t ctdluid = 0;
-const char *CitadelServiceUDS="citadel-UDS";
-const char *CitadelServiceTCP="citadel-TCP";
-void go_threading(void);
-
-
-/*
- * Create or remove a lock file, so we only have one Citadel Server running at a time.
- */
-void ctdl_lockfile(int yo) {
- static char lockfilename[SIZ];
- static FILE *fp;
-
- if (yo) {
- syslog(LOG_DEBUG, "main: creating lockfile");
- snprintf(lockfilename, sizeof lockfilename, "%s/citadel.lock", ctdl_run_dir);
- fp = fopen(lockfilename, "w");
- if (!fp) {
- syslog(LOG_ERR, "%s: %s", lockfilename, strerror(errno));
- exit(CTDLEXIT_DB);
- }
- if (flock(fileno(fp), (LOCK_EX|LOCK_NB)) != 0) {
- syslog(LOG_ERR, "main: cannot lock %s , is another citserver running?", lockfilename);
- exit(CTDLEXIT_DB);
- }
- return;
- }
-
- syslog(LOG_DEBUG, "main: removing lockfile");
- unlink(lockfilename);
- flock(fileno(fp), LOCK_UN);
- fclose(fp);
-}
-
-
-/*
- * Here's where it all begins.
- */
-int main(int argc, char **argv)
-{
- size_t basesize = 64;
- char facility[32];
- int a; /* General-purpose variables */
- struct passwd pw, *pwp = NULL;
- char pwbuf[SIZ];
- int drop_root_perms = 1;
- int relh=0;
- int home=0;
- int dbg=0;
- char relhome[PATH_MAX]="";
- char ctdldir[PATH_MAX]=CTDLDIR;
- int syslog_facility = LOG_DAEMON;
- const char *eDebuglist[] = {NULL, NULL};
- uid_t u = 0;
- struct passwd *p = NULL;
-#ifdef HAVE_RUN_DIR
- struct stat filestats;
-#endif
-#ifdef HAVE_BACKTRACE
- eCrashParameters params;
-// eCrashSymbolTable symbol_table;
-#endif
-
- /* initialize the master context */
- InitializeMasterCC();
- InitializeMasterTSD();
-
- /* parse command-line arguments */
- while ((a=getopt(argc, argv, "l:dh:x:t:B:Dru:")) != EOF) switch(a) {
-
- case 'l':
- safestrncpy(facility, optarg, sizeof(facility));
- syslog_facility = SyslogFacility(facility);
- break;
-
- /* run in the background if -d was specified */
- case 'd':
- running_as_daemon = 1;
- break;
-
- case 'h':
- relh = optarg[0] != '/';
- if (!relh) {
- safestrncpy(ctdl_home_directory, optarg, sizeof ctdl_home_directory);
- }
- else {
- safestrncpy(relhome, optarg, sizeof relhome);
- }
- home=1;
- break;
-
- case 'x':
- eDebuglist [0] = optarg;
- break;
-
- case 't': /* deprecated */
- break;
- case 'B': /* Basesize */
- basesize = atoi(optarg);
- break;
-
- case 'D':
- dbg = 1;
- break;
-
- /* -r tells the server not to drop root permissions.
- * Don't use this unless you know what you're doing.
- */
- case 'r':
- drop_root_perms = 0;
- break;
-
- /* -u tells the server what uid to run under... */
- case 'u':
- u = atoi(optarg);
- if (u > 0) {
- ctdluid = u;
- }
- else {
- p = getpwnam(optarg);
- if (p) {
- u = p->pw_uid;
- }
- }
- if (u > 0) {
- ctdluid = u;
- }
- break;
-
- default:
- /* any other parameter makes it crash and burn */
- fprintf(stderr, "citserver: usage: "
- "citserver "
- "[-l LogFacility] "
- "[-d] [-D] [-r] "
- "[-u user] "
- "[-h HomeDir]\n"
- );
- exit(1);
- }
-
- /* Last ditch effort to determine the user name ... if there's a user called "citadel" then use that */
- if (ctdluid == 0) {
- p = getpwnam("citadel");
- if (!p) {
- p = getpwnam("bbs");
- }
- if (!p) {
- p = getpwnam("guest");
- }
- if (p) {
- u = p->pw_uid;
- }
- if (u > 0) {
- ctdluid = u;
- }
- }
-
- if ((ctdluid == 0) && (drop_root_perms == 0)) {
- fprintf(stderr, "citserver: cannot determine user to run as; please specify -r or -u options\n");
- exit(CTDLEXIT_UNUSER);
- }
-
- StartLibCitadel(basesize);
- openlog("citserver",
- ( running_as_daemon ? (LOG_PID) : (LOG_PID | LOG_PERROR) ),
- syslog_facility
- );
-
- calc_dirs_n_files(relh, home, relhome, ctdldir, dbg);
- /* daemonize, if we were asked to */
- if (running_as_daemon) {
- start_daemon(0);
- drop_root_perms = 1;
- }
-
- /* Tell 'em who's in da house */
- syslog(LOG_INFO, " ");
- syslog(LOG_INFO, " ");
- syslog(LOG_INFO, "*** Citadel server engine ***\n");
- syslog(LOG_INFO, "Version %d (build %s) ***", REV_LEVEL, svn_revision());
- syslog(LOG_INFO, "Copyright (C) 1987-2017 by the Citadel development team.");
- syslog(LOG_INFO, "This program is distributed under the terms of the GNU General Public License.");
- syslog(LOG_INFO, " ");
- syslog(LOG_INFO, "%s", libcitadel_version_string());
-
-#ifdef HAVE_RUN_DIR
- /* on some dists rundir gets purged on startup. so we need to recreate it. */
-
- if (stat(ctdl_run_dir, &filestats)==-1){
-#ifdef HAVE_GETPWUID_R
-#ifdef SOLARIS_GETPWUID
- pwp = getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf));
-#else // SOLARIS_GETPWUID
- getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf), &pwp);
-#endif // SOLARIS_GETPWUID
-#else // HAVE_GETPWUID_R
- pwp = NULL;
-#endif // HAVE_GETPWUID_R
-
- if ((mkdir(ctdl_run_dir, 0755) != 0) && (errno != EEXIST)) {
- syslog(LOG_ERR, "main: unable to create run directory [%s]: %s", ctdl_run_dir, strerror(errno));
- }
-
- if (chown(ctdl_run_dir, ctdluid, (pwp==NULL)?-1:pw.pw_gid) != 0) {
- syslog(LOG_ERR, "main: unable to set the access rights for [%s]: %s", ctdl_run_dir, strerror(errno));
- }
- }
-#endif
-
- ctdl_lockfile(1);
-
- /* Initialize... */
- init_sysdep();
-
- /*
- * Do non system dependent startup functions.
- */
- master_startup();
-
- /*
- * Check that the control record is correct and place sensible values if it isn't
- */
- check_control();
-
- /*
- * Run any upgrade entry points
- */
- syslog(LOG_INFO, "main: upgrading modules");
- upgrade_modules();
-
-/*
- * Load the user for the masterCC or create them if they don't exist
- */
- if (CtdlGetUser(&masterCC.user, "SYS_Citadel"))
- {
- /* User doesn't exist. We can't use create user here as the user number needs to be 0 */
- strcpy (masterCC.user.fullname, "SYS_Citadel") ;
- CtdlPutUser(&masterCC.user);
- CtdlGetUser(&masterCC.user, "SYS_Citadel"); /* Just to be safe */
- }
-
- /*
- * Bind the server to a Unix-domain socket (user client access)
- */
- CtdlRegisterServiceHook(0,
- file_citadel_socket,
- citproto_begin_session,
- do_command_loop,
- do_async_loop,
- CitadelServiceUDS);
-
- /*
- * Bind the server to a Unix-domain socket (admin client access)
- */
- CtdlRegisterServiceHook(0,
- file_citadel_admin_socket,
- citproto_begin_admin_session,
- do_command_loop,
- do_async_loop,
- CitadelServiceUDS);
- chmod(file_citadel_admin_socket, S_IRWXU); /* for your eyes only */
-
- /*
- * Bind the server to our favorite TCP port (usually 504).
- */
- CtdlRegisterServiceHook(CtdlGetConfigInt("c_port_number"),
- NULL,
- citproto_begin_session,
- do_command_loop,
- do_async_loop,
- CitadelServiceTCP);
-
-
-
-
- /*
- * Load any server-side extensions available here.
- */
- syslog(LOG_INFO, "main: initializing server extensions");
-
- initialise_modules(0);
-
- eDebuglist[1] = getenv("CITADEL_LOGDEBUG");
- CtdlSetDebugLogFacilities(eDebuglist, 2);
-
- /*
- * If we need host auth, start our chkpwd daemon.
- */
- if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
- start_chkpwd_daemon();
- }
-
-
- /*
- * check, whether we're fired up another time after a crash.
- * if, post an aide message, so the admin has a chance to react.
- */
- checkcrash ();
-
-
- /*
- * Now that we've bound the sockets, change to the Citadel user id and its
- * corresponding group ids
- */
- if (drop_root_perms) {
- cdb_chmod_data(); /* make sure we own our data files */
-
-#ifdef HAVE_GETPWUID_R
-#ifdef SOLARIS_GETPWUID
- pwp = getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf));
-#else // SOLARIS_GETPWUID
- getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf), &pwp);
-#endif // SOLARIS_GETPWUID
-#else // HAVE_GETPWUID_R
- pwp = NULL;
-#endif // HAVE_GETPWUID_R
-
- if (pwp == NULL)
- syslog(LOG_ERR, "main: WARNING, getpwuid(%ld): %s" "Group IDs will be incorrect.", (long)CTDLUID, strerror(errno));
- else {
- initgroups(pw.pw_name, pw.pw_gid);
- if (setgid(pw.pw_gid))
- syslog(LOG_ERR, "main: setgid(%ld): %s", (long)pw.pw_gid, strerror(errno));
- }
- syslog(LOG_INFO, "main: changing uid to %ld", (long)CTDLUID);
- if (setuid(CTDLUID) != 0) {
- syslog(LOG_ERR, "main: setuid() failed: %s", strerror(errno));
- }
-#if defined (HAVE_SYS_PRCTL_H) && defined (PR_SET_DUMPABLE)
- prctl(PR_SET_DUMPABLE, 1);
-#endif
- }
-
- /* We want to check for idle sessions once per minute */
- CtdlRegisterSessionHook(terminate_idle_sessions, EVT_TIMER, PRIO_CLEANUP + 1);
-
- go_threading();
-
- int exit_code = master_cleanup(exit_signal);
- ctdl_lockfile(0);
- return(exit_code);
-}
projects / citadel.git / blobdiff