/*
* citserver's main() function lives here.
*
- * Copyright (c) 1987-2015 by the citadel.org team
+ * Copyright (c) 1987-2020 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.
* 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 "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);
+int sanity_diag_mode = 0;
+
+
+/*
+ * 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[PATH_MAX];
+ 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: %m", lockfilename);
+ 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 relh=0;
int home=0;
int dbg=0;
+ int max_log_level = LOG_INFO;
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 */
InitializeMasterTSD();
/* parse command-line arguments */
- while ((a=getopt(argc, argv, "l:dh:x:t:B:Dru:")) != EOF) switch(a) {
+ while ((a=getopt(argc, argv, "l:dh:x:t:B:Dru:s:")) != EOF) switch(a) {
case 'l':
safestrncpy(facility, optarg, sizeof(facility));
break;
case 'x':
- eDebuglist [0] = optarg;
+ max_log_level = atoi(optarg);
break;
case 't': /* deprecated */
}
break;
+ /* -s tells the server to behave differently during sanity checks */
+ case 's':
+ sanity_diag_mode = atoi(optarg);
+ break;
+
default:
/* any other parameter makes it crash and burn */
fprintf(stderr, "citserver: usage: "
"citserver "
"[-l LogFacility] "
+ "[-x MaxLogLevel] "
"[-d] [-D] [-r] "
"[-u user] "
"[-h HomeDir]\n"
}
StartLibCitadel(basesize);
+ setlogmask(LOG_UPTO(max_log_level));
openlog("citserver",
( running_as_daemon ? (LOG_PID) : (LOG_PID | LOG_PERROR) ),
syslog_facility
drop_root_perms = 1;
}
-#if 0
- def HAVE_BACKTRACE
- bzero(¶ms, sizeof(params));
- params.filename = file_pid_paniclog;
- panic_fd=open(file_pid_paniclog, O_APPEND|O_CREAT|O_DIRECT);
- params.filep = fopen(file_pid_paniclog, "a+");
- params.debugLevel = ECRASH_DEBUG_VERBOSE;
- params.dumpAllThreads = TRUE;
- params.useBacktraceSymbols = 1;
- params.signals[0]=SIGSEGV;
- params.signals[1]=SIGILL;
- params.signals[2]=SIGBUS;
- params.signals[3]=SIGABRT;
- eCrash_Init(¶ms);
- eCrash_RegisterThread("MasterThread", 0);
-#endif
-
/* Tell 'em who's in da house */
- syslog(LOG_NOTICE, " ");
- syslog(LOG_NOTICE, " ");
- syslog(LOG_NOTICE,
- "*** Citadel server engine v%d.%02d (build %s) ***",
- (REV_LEVEL/100), (REV_LEVEL%100), svn_revision());
- syslog(LOG_NOTICE, "Copyright (C) 1987-2015 by the Citadel development team.");
- syslog(LOG_NOTICE, "This program is distributed under the terms of the GNU "
- "General Public License.");
- syslog(LOG_NOTICE, " ");
- syslog(LOG_DEBUG, "Called as: %s", argv[0]);
+ 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) 1987-2020 by the Citadel development team.");
+ syslog(LOG_INFO, " ");
+ syslog(LOG_INFO, "This program is open source software: you can redistribute it and/or");
+ syslog(LOG_INFO, "modify it under the terms of the GNU General Public License, version 3.");
+ syslog(LOG_INFO, " ");
+ syslog(LOG_INFO, "This program is distributed in the hope that it will be useful,");
+ syslog(LOG_INFO, "but WITHOUT ANY WARRANTY; without even the implied warranty of");
+ syslog(LOG_INFO, "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the");
+ syslog(LOG_INFO, "GNU General Public License for more details.");
+ 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){
+ if (stat(ctdl_run_dir, &filestats) == -1) {
#ifdef HAVE_GETPWUID_R
#ifdef SOLARIS_GETPWUID
pwp = getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf));
pwp = NULL;
#endif // HAVE_GETPWUID_R
- if ((mkdir(ctdl_run_dir, 0755) != 0) && (errno != EEXIST))
- syslog(LOG_EMERG,
- "unable to create run directory [%s]: %s",
- ctdl_run_dir, strerror(errno));
+ if ((mkdir(ctdl_run_dir, 0755) != 0) && (errno != EEXIST)) {
+ syslog(LOG_ERR, "main: unable to create run directory [%s]: %m", ctdl_run_dir);
+ }
- if (chown(ctdl_run_dir, ctdluid, (pwp==NULL)?-1:pw.pw_gid) != 0)
- syslog(LOG_EMERG,
- "unable to set the access rights for [%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]: %m", ctdl_run_dir);
+ }
}
-
-
#endif
- /* 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, "Upgrading modules.");
+ ctdl_lockfile(1);
+ init_sysdep(); // Initialize...
+ master_startup(); // Do non system dependent startup functions
+ check_control(); // Check/sanitize/initialize control record, fix user indexes
+ syslog(LOG_INFO, "main: upgrading modules"); // Run any upgrade entry points
upgrade_modules();
-
+
/*
* Load the user for the masterCC or create them if they don't exist
*/
do_async_loop,
CitadelServiceTCP);
-
-
-
/*
* Load any server-side extensions available here.
*/
- syslog(LOG_INFO, "Initializing server extensions");
+ 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.
*/
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 ();
-
+ checkcrash();
/*
* Now that we've bound the sockets, change to the Citadel user id and its
#endif // HAVE_GETPWUID_R
if (pwp == NULL)
- syslog(LOG_CRIT, "WARNING: getpwuid(%ld): %s"
- "Group IDs will be incorrect.\n", (long)CTDLUID,
- strerror(errno));
+ syslog(LOG_ERR, "main: WARNING, getpwuid(%ld): %m Group IDs will be incorrect.", (long)CTDLUID);
else {
initgroups(pw.pw_name, pw.pw_gid);
if (setgid(pw.pw_gid))
- syslog(LOG_CRIT, "setgid(%ld): %s", (long)pw.pw_gid,
- strerror(errno));
+ syslog(LOG_ERR, "main: setgid(%ld): %m", (long)pw.pw_gid);
}
- syslog(LOG_INFO, "Changing uid to %ld", (long)CTDLUID);
+ syslog(LOG_INFO, "main: changing uid to %ld", (long)CTDLUID);
if (setuid(CTDLUID) != 0) {
- syslog(LOG_CRIT, "setuid() failed: %s", strerror(errno));
+ syslog(LOG_ERR, "main: setuid() failed: %m");
}
#if defined (HAVE_SYS_PRCTL_H) && defined (PR_SET_DUMPABLE)
prctl(PR_SET_DUMPABLE, 1);
go_threading();
- master_cleanup(exit_signal);
- return(0);
+ int exit_code = master_cleanup(exit_signal);
+ ctdl_lockfile(0);
+ if (restart_server) {
+ execv(argv[0], argv);
+ }
+ return(exit_code);
}
projects / citadel.git / blobdiff