X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fserver_main.c;h=53be18071451bba5ee7777c367b60755c83f4ba1;hb=0c9cb3fbc797de34635bc6748937b710a4d37bcb;hp=0dc52a0e4667cd6d320be7f7562cfbf4615bd66a;hpb=e85aa196b15dae29036b46a28412ce57961c85f9;p=citadel.git diff --git a/citadel/server_main.c b/citadel/server_main.c index 0dc52a0e4..53be18071 100644 --- a/citadel/server_main.c +++ b/citadel/server_main.c @@ -1,7 +1,7 @@ /* * citserver's main() function lives here. * - * Copyright (c) 1987-2012 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. @@ -11,72 +11,23 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ - -#include "sysdep.h" -#include -#include #include -#include -#include -#include #include -#include -#include -#include -#include - -#if TIME_WITH_SYS_TIME -# include -# include -#else -# if HAVE_SYS_TIME_H -# include -# else -# include -# endif -#endif - -#include -#include -#include -#include -#include -#include -#include -#include #include -#include -#ifdef HAVE_SYS_PRCTL_H -#include -#endif +#include #include -#include "citadel.h" -#include "server.h" -#include "serv_extensions.h" -#include "sysdep_decls.h" -#include "threads.h" + #include "citserver.h" -#include "support.h" +#include "svn_revision.h" +#include "modules_init.h" #include "config.h" #include "control.h" -#include "database.h" -#include "user_ops.h" -#include "housekeeping.h" -#include "svn_revision.h" +#include "serv_extensions.h" #include "citadel_dirs.h" - -#include "context.h" - -#include "modules_init.h" +#include "user_ops.h" #include "ecrash.h" -#ifdef HAVE_SYS_SELECT_H -#include -#endif - -#ifndef HAVE_SNPRINTF -#include "snprintf.h" -#endif +uid_t ctdluid = 0; const char *CitadelServiceUDS="citadel-UDS"; const char *CitadelServiceTCP="citadel-TCP"; @@ -84,11 +35,48 @@ 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; @@ -101,6 +89,8 @@ int main(int argc, char **argv) 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 @@ -114,7 +104,7 @@ int main(int argc, char **argv) InitializeMasterTSD(); /* parse command-line arguments */ - while ((a=getopt(argc, argv, "l:dh:x:t:Dr")) != EOF) switch(a) { + while ((a=getopt(argc, argv, "l:dh:x:t:B:Dru:")) != EOF) switch(a) { case 'l': safestrncpy(facility, optarg, sizeof(facility)); @@ -143,6 +133,9 @@ int main(int argc, char **argv) case 't': /* deprecated */ break; + case 'B': /* Basesize */ + basesize = atoi(optarg); + break; case 'D': dbg = 1; @@ -155,17 +148,58 @@ int main(int argc, char **argv) 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 @@ -178,7 +212,8 @@ int main(int argc, char **argv) drop_root_perms = 1; } -#ifdef HAVE_BACKTRACE +#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); @@ -197,54 +232,41 @@ int main(int argc, char **argv) /* 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) 1987-2012 by the Citadel development team."); + syslog(LOG_NOTICE, "*** Citadel server engine ***\n"); + syslog(LOG_NOTICE, "Version %d (build %s) ***", REV_LEVEL, svn_revision()); + syslog(LOG_NOTICE, "Copyright (C) 1987-2017 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, "%s", libcitadel_version_string()); - /* Load site-specific configuration */ - syslog(LOG_INFO, "Loading citadel.config"); - get_config(); - - /* get_control() MUST MUST MUST be called BEFORE the databases are opened!! */ - syslog(LOG_INFO, "Acquiring control record"); - get_control(); - - put_config(); - #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(config.c_ctdluid, &pw, pwbuf, sizeof(pwbuf)); + pwp = getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf)); #else // SOLARIS_GETPWUID - getpwuid_r(config.c_ctdluid, &pw, pwbuf, sizeof(pwbuf), &pwp); + 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_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]: %s", ctdl_run_dir, strerror(errno)); + } - if (chown(ctdl_run_dir, config.c_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]: %s", ctdl_run_dir, strerror(errno)); + } } - - #endif + ctdl_lockfile(1); + /* Initialize... */ init_sysdep(); @@ -261,7 +283,7 @@ int main(int argc, char **argv) /* * Run any upgrade entry points */ - syslog(LOG_INFO, "Upgrading modules."); + syslog(LOG_INFO, "main: upgrading modules"); upgrade_modules(); /* @@ -299,7 +321,7 @@ int main(int argc, char **argv) /* * Bind the server to our favorite TCP port (usually 504). */ - CtdlRegisterServiceHook(config.c_port_number, + CtdlRegisterServiceHook(CtdlGetConfigInt("c_port_number"), NULL, citproto_begin_session, do_command_loop, @@ -312,7 +334,7 @@ int main(int argc, char **argv) /* * Load any server-side extensions available here. */ - syslog(LOG_INFO, "Initializing server extensions"); + syslog(LOG_INFO, "main: initializing server extensions"); initialise_modules(0); @@ -322,7 +344,7 @@ int main(int argc, char **argv) /* * If we need host auth, start our chkpwd daemon. */ - if (config.c_auth_mode == AUTHMODE_HOST) { + if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) { start_chkpwd_daemon(); } @@ -343,27 +365,24 @@ int main(int argc, char **argv) #ifdef HAVE_GETPWUID_R #ifdef SOLARIS_GETPWUID - pwp = getpwuid_r(config.c_ctdluid, &pw, pwbuf, sizeof(pwbuf)); + pwp = getpwuid_r(ctdluid, &pw, pwbuf, sizeof(pwbuf)); #else // SOLARIS_GETPWUID - getpwuid_r(config.c_ctdluid, &pw, pwbuf, sizeof(pwbuf), &pwp); + 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_CRIT, "WARNING: getpwuid(%ld): %s" - "Group IDs will be incorrect.\n", (long)CTDLUID, - strerror(errno)); + 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_CRIT, "setgid(%ld): %s", (long)pw.pw_gid, - strerror(errno)); + syslog(LOG_ERR, "main: setgid(%ld): %s", (long)pw.pw_gid, strerror(errno)); } - 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: %s", strerror(errno)); } #if defined (HAVE_SYS_PRCTL_H) && defined (PR_SET_DUMPABLE) prctl(PR_SET_DUMPABLE, 1); @@ -371,10 +390,11 @@ int main(int argc, char **argv) } /* We want to check for idle sessions once per minute */ - CtdlRegisterSessionHook(terminate_idle_sessions, EVT_TIMER); + CtdlRegisterSessionHook(terminate_idle_sessions, EVT_TIMER, PRIO_CLEANUP + 1); go_threading(); - master_cleanup(exit_signal); - return(0); + int exit_code = master_cleanup(exit_signal); + ctdl_lockfile(0); + return(exit_code); }