summaryrefslogtreecommitdiffstats
path: root/servers/lloadd/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'servers/lloadd/main.c')
-rw-r--r--servers/lloadd/main.c955
1 files changed, 955 insertions, 0 deletions
diff --git a/servers/lloadd/main.c b/servers/lloadd/main.c
new file mode 100644
index 0000000..b117726
--- /dev/null
+++ b/servers/lloadd/main.c
@@ -0,0 +1,955 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+#include <ac/wait.h>
+#include <ac/errno.h>
+
+#include <event2/event.h>
+
+#include "lload.h"
+#include "lutil.h"
+#include "ldif.h"
+
+#ifdef LDAP_SIGCHLD
+static void wait4child( evutil_socket_t sig, short what, void *arg );
+#endif
+
+#ifdef SIGPIPE
+static void sigpipe( evutil_socket_t sig, short what, void *arg );
+#endif
+
+#ifdef HAVE_NT_SERVICE_MANAGER
+#define MAIN_RETURN(x) return
+static struct sockaddr_in bind_addr;
+
+#define SERVICE_EXIT( e, n ) \
+ do { \
+ if ( is_NT_Service ) { \
+ lutil_ServiceStatus.dwWin32ExitCode = (e); \
+ lutil_ServiceStatus.dwServiceSpecificExitCode = (n); \
+ } \
+ } while (0)
+
+#else
+#define SERVICE_EXIT( e, n )
+#define MAIN_RETURN(x) return (x)
+#endif
+
+struct signal_handler {
+ int signal;
+ event_callback_fn handler;
+ struct event *event;
+} signal_handlers[] = {
+ { LDAP_SIGUSR2, lload_sig_shutdown },
+
+#ifdef SIGPIPE
+ { SIGPIPE, sigpipe },
+#endif
+#ifdef SIGHUP
+ { SIGHUP, lload_sig_shutdown },
+#endif
+ { SIGINT, lload_sig_shutdown },
+ { SIGTERM, lload_sig_shutdown },
+#ifdef SIGTRAP
+ { SIGTRAP, lload_sig_shutdown },
+#endif
+#ifdef LDAP_SIGCHLD
+ { LDAP_SIGCHLD, wait4child },
+#endif
+#ifdef SIGBREAK
+ /* SIGBREAK is generated when Ctrl-Break is pressed. */
+ { SIGBREAK, lload_sig_shutdown },
+#endif
+ { 0, NULL }
+};
+
+/* in logging.c */
+extern char *serverName;
+extern int slap_debug_orig;
+
+/*
+ * when more than one lloadd is running on one machine, each one might have
+ * it's own LOCAL for syslogging and must have its own pid/args files
+ */
+
+#ifndef HAVE_MKVERSION
+const char Versionstr[] = OPENLDAP_PACKAGE
+ " " OPENLDAP_VERSION " LDAP Load Balancer Server (lloadd)";
+#endif
+
+#define CHECK_NONE 0x00
+#define CHECK_CONFIG 0x01
+#define CHECK_LOGLEVEL 0x02
+static int check = CHECK_NONE;
+static int version = 0;
+
+static int
+slapd_opt_slp( const char *val, void *arg )
+{
+#ifdef HAVE_SLP
+ /* NULL is default */
+ if ( val == NULL || *val == '(' || strcasecmp( val, "on" ) == 0 ) {
+ slapd_register_slp = 1;
+ slapd_slp_attrs = ( val != NULL && *val == '(' ) ? val : NULL;
+
+ } else if ( strcasecmp( val, "off" ) == 0 ) {
+ slapd_register_slp = 0;
+
+ /* NOTE: add support for URL specification? */
+
+ } else {
+ fprintf( stderr, "unrecognized value \"%s\" for SLP option\n", val );
+ return -1;
+ }
+
+ return 0;
+
+#else
+ fputs( "lloadd: SLP support is not available\n", stderr );
+ return 0;
+#endif
+}
+
+/*
+ * Option helper structure:
+ *
+ * oh_nam is left-hand part of <option>[=<value>]
+ * oh_fnc is handler function
+ * oh_arg is an optional arg to oh_fnc
+ * oh_usage is the one-line usage string related to the option,
+ * which is assumed to start with <option>[=<value>]
+ *
+ * please leave valid options in the structure, and optionally #ifdef
+ * their processing inside the helper, so that reasonable and helpful
+ * error messages can be generated if a disabled option is requested.
+ */
+struct option_helper {
+ struct berval oh_name;
+ int (*oh_fnc)( const char *val, void *arg );
+ void *oh_arg;
+ const char *oh_usage;
+} option_helpers[] = {
+ { BER_BVC("slp"), slapd_opt_slp, NULL,
+ "slp[={on|off|(attrs)}] enable/disable SLP using (attrs)" },
+ { BER_BVNULL, 0, NULL, NULL }
+};
+
+#if defined(LDAP_DEBUG) && defined(LDAP_SYSLOG)
+#ifdef LOG_LOCAL4
+int
+parse_syslog_user( const char *arg, int *syslogUser )
+{
+ static slap_verbmasks syslogUsers[] = {
+ { BER_BVC("LOCAL0"), LOG_LOCAL0 },
+ { BER_BVC("LOCAL1"), LOG_LOCAL1 },
+ { BER_BVC("LOCAL2"), LOG_LOCAL2 },
+ { BER_BVC("LOCAL3"), LOG_LOCAL3 },
+ { BER_BVC("LOCAL4"), LOG_LOCAL4 },
+ { BER_BVC("LOCAL5"), LOG_LOCAL5 },
+ { BER_BVC("LOCAL6"), LOG_LOCAL6 },
+ { BER_BVC("LOCAL7"), LOG_LOCAL7 },
+#ifdef LOG_USER
+ { BER_BVC("USER"), LOG_USER },
+#endif /* LOG_USER */
+#ifdef LOG_DAEMON
+ { BER_BVC("DAEMON"), LOG_DAEMON },
+#endif /* LOG_DAEMON */
+ { BER_BVNULL, 0 }
+};
+ int i = verb_to_mask( arg, syslogUsers );
+
+ if ( BER_BVISNULL( &syslogUsers[i].word ) ) {
+ Debug( LDAP_DEBUG_ANY, "unrecognized syslog user \"%s\".\n", arg );
+ return 1;
+ }
+
+ *syslogUser = syslogUsers[i].mask;
+
+ return 0;
+}
+#endif /* LOG_LOCAL4 */
+
+int
+parse_syslog_level( const char *arg, int *levelp )
+{
+ static slap_verbmasks str2syslog_level[] = {
+ { BER_BVC("EMERG"), LOG_EMERG },
+ { BER_BVC("ALERT"), LOG_ALERT },
+ { BER_BVC("CRIT"), LOG_CRIT },
+ { BER_BVC("ERR"), LOG_ERR },
+ { BER_BVC("WARNING"), LOG_WARNING },
+ { BER_BVC("NOTICE"), LOG_NOTICE },
+ { BER_BVC("INFO"), LOG_INFO },
+ { BER_BVC("DEBUG"), LOG_DEBUG },
+ { BER_BVNULL, 0 }
+};
+ int i = verb_to_mask( arg, str2syslog_level );
+ if ( BER_BVISNULL( &str2syslog_level[i].word ) ) {
+ Debug( LDAP_DEBUG_ANY, "unknown syslog level \"%s\".\n", arg );
+ return 1;
+ }
+
+ *levelp = str2syslog_level[i].mask;
+
+ return 0;
+}
+#endif /* LDAP_DEBUG && LDAP_SYSLOG */
+
+int
+parse_debug_unknowns( char **unknowns, int *levelp )
+{
+ int i, level, rc = 0;
+
+ for ( i = 0; unknowns[i] != NULL; i++ ) {
+ level = 0;
+ if ( str2loglevel( unknowns[i], &level ) ) {
+ fprintf( stderr, "unrecognized log level \"%s\"\n", unknowns[i] );
+ rc = 1;
+ } else {
+ *levelp |= level;
+ }
+ }
+ return rc;
+}
+
+int
+parse_debug_level( const char *arg, int *levelp, char ***unknowns )
+{
+ int level;
+
+ if ( arg && arg[0] != '-' && !isdigit( (unsigned char)arg[0] ) ) {
+ int i;
+ char **levels;
+
+ levels = ldap_str2charray( arg, "," );
+
+ for ( i = 0; levels[i] != NULL; i++ ) {
+ level = 0;
+
+ if ( str2loglevel( levels[i], &level ) ) {
+ /* remember this for later */
+ ldap_charray_add( unknowns, levels[i] );
+ fprintf( stderr, "unrecognized log level \"%s\" (deferred)\n",
+ levels[i] );
+ } else {
+ *levelp |= level;
+ }
+ }
+
+ ldap_charray_free( levels );
+
+ } else {
+ int rc;
+
+ if ( arg[0] == '-' ) {
+ rc = lutil_atoix( &level, arg, 0 );
+ } else {
+ unsigned ulevel;
+
+ rc = lutil_atoux( &ulevel, arg, 0 );
+ level = (int)ulevel;
+ }
+
+ if ( rc ) {
+ fprintf( stderr,
+ "unrecognized log level "
+ "\"%s\"\n",
+ arg );
+ return 1;
+ }
+
+ if ( level == 0 ) {
+ *levelp = 0;
+
+ } else {
+ *levelp |= level;
+ }
+ }
+
+ return 0;
+}
+
+static void
+usage( char *name )
+{
+ fprintf( stderr, "usage: %s options\n", name );
+ fprintf( stderr,
+ "\t-4\t\tIPv4 only\n"
+ "\t-6\t\tIPv6 only\n"
+ "\t-d level\tDebug level"
+ "\n"
+ "\t-f filename\tConfiguration file\n"
+#if defined(HAVE_SETUID) && defined(HAVE_SETGID)
+ "\t-g group\tGroup (id or name) to run as\n"
+#endif
+ "\t-h URLs\t\tList of URLs to serve\n"
+#ifdef SLAP_DEFAULT_SYSLOG_USER
+ "\t-l facility\tSyslog facility (default: LOCAL4)\n"
+#endif
+ "\t-n serverName\tService name\n"
+ "\t-o <opt>[=val] generic means to specify options" );
+ if ( !BER_BVISNULL( &option_helpers[0].oh_name ) ) {
+ int i;
+
+ fprintf( stderr, "; supported options:\n" );
+ for ( i = 0; !BER_BVISNULL( &option_helpers[i].oh_name ); i++ ) {
+ fprintf( stderr, "\t\t%s\n", option_helpers[i].oh_usage );
+ }
+ } else {
+ fprintf( stderr, "\n" );
+ }
+ fprintf( stderr,
+#ifdef HAVE_CHROOT
+ "\t-r directory\tSandbox directory to chroot to\n"
+#endif
+ "\t-s level\tSyslog level\n"
+ "\t-t\t\tCheck configuration file\n"
+#if defined(HAVE_SETUID) && defined(HAVE_SETGID)
+ "\t-u user\t\tUser (id or name) to run as\n"
+#endif
+ "\t-V\t\tprint version info (-VV exit afterwards)\n" );
+}
+
+#ifdef HAVE_NT_SERVICE_MANAGER
+void WINAPI
+ServiceMain( DWORD argc, LPTSTR *argv )
+#else
+int
+main( int argc, char **argv )
+#endif
+{
+ int i, no_detach = 0;
+ int rc = 1;
+ char *urls = NULL;
+#if defined(HAVE_SETUID) && defined(HAVE_SETGID)
+ char *username = NULL;
+ char *groupname = NULL;
+#endif
+#if defined(HAVE_CHROOT)
+ char *sandbox = NULL;
+#endif
+#ifdef SLAP_DEFAULT_SYSLOG_USER
+ int syslogUser = SLAP_DEFAULT_SYSLOG_USER;
+#endif
+
+#ifndef HAVE_WINSOCK
+ int pid, waitfds[2];
+#endif
+ int g_argc = argc;
+ char **g_argv = argv;
+
+ char *configfile = NULL;
+ char *configdir = NULL;
+ int serverMode = SLAP_SERVER_MODE;
+
+ char **debug_unknowns = NULL;
+ char **syslog_unknowns = NULL;
+
+ int slapd_pid_file_unlink = 0, slapd_args_file_unlink = 0;
+ int firstopt = 1;
+
+ slap_sl_mem_init();
+
+ (void) ldap_pvt_thread_initialize();
+ ldap_pvt_thread_mutex_init( &logfile_mutex );
+
+ serverName = lutil_progname( "lloadd", argc, argv );
+
+#ifdef HAVE_NT_SERVICE_MANAGER
+ {
+ int *ip;
+ char *newConfigFile;
+ char *newConfigDir;
+ char *newUrls;
+ char *regService = NULL;
+
+ if ( is_NT_Service ) {
+ lutil_CommenceStartupProcessing( serverName, lload_sig_shutdown );
+ if ( strcmp( serverName, SERVICE_NAME ) ) regService = serverName;
+ }
+
+ ip = (int *)lutil_getRegParam( regService, "DebugLevel" );
+ if ( ip != NULL ) {
+ slap_debug = *ip;
+ Debug( LDAP_DEBUG_ANY, "new debug level from registry is: %d\n",
+ slap_debug );
+ }
+
+ newUrls = (char *)lutil_getRegParam( regService, "Urls" );
+ if ( newUrls ) {
+ if ( urls ) ch_free( urls );
+
+ urls = ch_strdup( newUrls );
+ Debug( LDAP_DEBUG_ANY, "new urls from registry: %s\n", urls );
+ }
+
+ newConfigFile = (char *)lutil_getRegParam( regService, "ConfigFile" );
+ if ( newConfigFile != NULL ) {
+ configfile = ch_strdup( newConfigFile );
+ Debug( LDAP_DEBUG_ANY, "new config file from registry is: %s\n",
+ configfile );
+ }
+
+ newConfigDir = (char *)lutil_getRegParam( regService, "ConfigDir" );
+ if ( newConfigDir != NULL ) {
+ configdir = ch_strdup( newConfigDir );
+ Debug( LDAP_DEBUG_ANY, "new config dir from registry is: %s\n",
+ configdir );
+ }
+ }
+#endif
+
+ epoch_init();
+
+ while ( (i = getopt( argc, argv,
+ "c:d:f:F:h:n:o:s:tV"
+#ifdef LDAP_PF_INET6
+ "46"
+#endif
+#ifdef HAVE_CHROOT
+ "r:"
+#endif
+#if defined(LDAP_DEBUG) && defined(LDAP_SYSLOG)
+ "S:"
+#ifdef LOG_LOCAL4
+ "l:"
+#endif
+#endif
+#if defined(HAVE_SETUID) && defined(HAVE_SETGID)
+ "u:g:"
+#endif
+ )) != EOF ) {
+ switch ( i ) {
+#ifdef LDAP_PF_INET6
+ case '4':
+ slap_inet4or6 = AF_INET;
+ break;
+ case '6':
+ slap_inet4or6 = AF_INET6;
+ break;
+#endif
+
+ case 'h': /* listen URLs */
+ if ( urls != NULL ) free( urls );
+ urls = ch_strdup( optarg );
+ break;
+
+ case 'd': { /* set debug level and 'do not detach' flag */
+ int level = 0;
+
+ if ( strcmp( optarg, "?" ) == 0 ) {
+ check |= CHECK_LOGLEVEL;
+ break;
+ }
+
+ no_detach = 1;
+ if ( parse_debug_level( optarg, &level, &debug_unknowns ) ) {
+ goto destroy;
+ }
+#ifdef LDAP_DEBUG
+ slap_debug |= level;
+#else
+ if ( level != 0 )
+ fputs( "must compile with LDAP_DEBUG for debugging\n",
+ stderr );
+#endif
+ } break;
+
+ case 'f': /* read config file */
+ configfile = ch_strdup( optarg );
+ break;
+
+ case 'o': {
+ char *val = strchr( optarg, '=' );
+ struct berval opt;
+
+ opt.bv_val = optarg;
+
+ if ( val ) {
+ opt.bv_len = ( val - optarg );
+ val++;
+
+ } else {
+ opt.bv_len = strlen( optarg );
+ }
+
+ for ( i = 0; !BER_BVISNULL( &option_helpers[i].oh_name );
+ i++ ) {
+ if ( ber_bvstrcasecmp( &option_helpers[i].oh_name, &opt ) ==
+ 0 ) {
+ assert( option_helpers[i].oh_fnc != NULL );
+ if ( (*option_helpers[i].oh_fnc)(
+ val, option_helpers[i].oh_arg ) == -1 ) {
+ /* we assume the option parsing helper
+ * issues appropriate and self-explanatory
+ * error messages... */
+ goto stop;
+ }
+ break;
+ }
+ }
+
+ if ( BER_BVISNULL( &option_helpers[i].oh_name ) ) {
+ goto unhandled_option;
+ }
+ break;
+ }
+
+ case 's': /* set syslog level */
+ if ( strcmp( optarg, "?" ) == 0 ) {
+ check |= CHECK_LOGLEVEL;
+ break;
+ }
+
+ if ( parse_debug_level(
+ optarg, &ldap_syslog, &syslog_unknowns ) ) {
+ goto destroy;
+ }
+ break;
+
+#if defined(LDAP_DEBUG) && defined(LDAP_SYSLOG)
+ case 'S':
+ if ( parse_syslog_level( optarg, &ldap_syslog_level ) ) {
+ goto destroy;
+ }
+ break;
+
+#ifdef LOG_LOCAL4
+ case 'l': /* set syslog local user */
+ if ( parse_syslog_user( optarg, &syslogUser ) ) {
+ goto destroy;
+ }
+ break;
+#endif
+#endif /* LDAP_DEBUG && LDAP_SYSLOG */
+
+#ifdef HAVE_CHROOT
+ case 'r':
+ if ( sandbox ) free( sandbox );
+ sandbox = ch_strdup( optarg );
+ break;
+#endif
+
+#if defined(HAVE_SETUID) && defined(HAVE_SETGID)
+ case 'u': /* user name */
+ if ( username ) free( username );
+ username = ch_strdup( optarg );
+ break;
+
+ case 'g': /* group name */
+ if ( groupname ) free( groupname );
+ groupname = ch_strdup( optarg );
+ break;
+#endif /* SETUID && GETUID */
+
+ case 'n': /* NT service name */
+ serverName = ch_strdup( optarg );
+ break;
+
+ case 't':
+ check |= CHECK_CONFIG;
+ break;
+
+ case 'V':
+ version++;
+ break;
+
+ default:
+unhandled_option:;
+ usage( argv[0] );
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 15 );
+ goto stop;
+ }
+
+ if ( firstopt ) {
+ firstopt = 0;
+ }
+ }
+
+ if ( optind != argc ) goto unhandled_option;
+
+ ber_set_option( NULL, LBER_OPT_LOG_PRINT_FN, slap_debug_print );
+ ber_set_option( NULL, LBER_OPT_DEBUG_LEVEL, &slap_debug );
+ ldap_set_option( NULL, LDAP_OPT_DEBUG_LEVEL, &slap_debug );
+ ldif_debug = slap_debug;
+ slap_debug_orig = slap_debug;
+
+ if ( version ) {
+ fprintf( stderr, "%s\n", Versionstr );
+
+ if ( version > 1 ) goto stop;
+ }
+
+#if defined(LDAP_DEBUG) && defined(LDAP_SYSLOG)
+ {
+ char *logName;
+#ifdef HAVE_EBCDIC
+ logName = ch_strdup( serverName );
+ __atoe( logName );
+#else
+ logName = serverName;
+#endif
+
+#ifdef LOG_LOCAL4
+ openlog( logName, OPENLOG_OPTIONS, syslogUser );
+#elif defined LOG_DEBUG
+ openlog( logName, OPENLOG_OPTIONS );
+#endif
+#ifdef HAVE_EBCDIC
+ free( logName );
+#endif
+ }
+#endif /* LDAP_DEBUG && LDAP_SYSLOG */
+
+ Debug( LDAP_DEBUG_ANY, "%s", Versionstr );
+
+ global_host = ldap_pvt_get_fqdn( NULL );
+
+ if ( check == CHECK_NONE && lloadd_listeners_init( urls ) != 0 ) {
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 16 );
+ goto stop;
+ }
+
+#if defined(HAVE_CHROOT)
+ if ( sandbox ) {
+ if ( chdir( sandbox ) ) {
+ perror( "chdir" );
+ rc = 1;
+ goto stop;
+ }
+ if ( chroot( sandbox ) ) {
+ perror( "chroot" );
+ rc = 1;
+ goto stop;
+ }
+ if ( chdir( "/" ) ) {
+ perror( "chdir" );
+ rc = 1;
+ goto stop;
+ }
+ }
+#endif
+
+#if defined(HAVE_SETUID) && defined(HAVE_SETGID)
+ if ( username != NULL || groupname != NULL ) {
+ slap_init_user( username, groupname );
+ }
+#endif
+
+ rc = lload_init( serverMode, serverName );
+ if ( rc ) {
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 18 );
+ goto destroy;
+ }
+
+ if ( lload_read_config( configfile, configdir ) != 0 ) {
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 19 );
+
+ if ( check & CHECK_CONFIG ) {
+ fprintf( stderr, "config check failed\n" );
+ }
+
+ goto destroy;
+ }
+
+ if ( debug_unknowns ) {
+ rc = parse_debug_unknowns( debug_unknowns, &slap_debug );
+ ldap_charray_free( debug_unknowns );
+ debug_unknowns = NULL;
+ if ( rc ) goto destroy;
+ }
+ if ( syslog_unknowns ) {
+ rc = parse_debug_unknowns( syslog_unknowns, &ldap_syslog );
+ ldap_charray_free( syslog_unknowns );
+ syslog_unknowns = NULL;
+ if ( rc ) goto destroy;
+ }
+
+ if ( check & CHECK_LOGLEVEL ) {
+ rc = 0;
+ goto destroy;
+ }
+
+ if ( check & CHECK_CONFIG ) {
+ fprintf( stderr, "config check succeeded\n" );
+
+ check &= ~CHECK_CONFIG;
+ if ( check == CHECK_NONE ) {
+ rc = 0;
+ goto destroy;
+ }
+ }
+
+#ifdef HAVE_TLS
+ rc = ldap_pvt_tls_init( 1 );
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY, "main: "
+ "TLS init failed: %d\n",
+ rc );
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 20 );
+ goto destroy;
+ }
+
+ if ( lload_tls_init() ) {
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 20 );
+ goto destroy;
+ }
+#endif
+
+ daemon_base = event_base_new();
+ if ( !daemon_base ) {
+ Debug( LDAP_DEBUG_ANY, "main: "
+ "main event base allocation failed\n" );
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 21 );
+ goto destroy;
+ }
+
+ for ( i = 0; signal_handlers[i].signal; i++ ) {
+ struct event *event;
+ event = evsignal_new( daemon_base, signal_handlers[i].signal,
+ signal_handlers[i].handler, daemon_base );
+ if ( !event || event_add( event, NULL ) ) {
+ Debug( LDAP_DEBUG_ANY, "main: "
+ "failed to register a handler for signal %d\n",
+ signal_handlers[i].signal );
+ rc = 1;
+ SERVICE_EXIT( ERROR_SERVICE_SPECIFIC_ERROR, 21 );
+ goto destroy;
+ }
+ signal_handlers[i].event = event;
+ }
+
+#ifndef HAVE_WINSOCK
+ if ( !no_detach ) {
+ if ( lutil_pair( waitfds ) < 0 ) {
+ Debug( LDAP_DEBUG_ANY, "main: "
+ "lutil_pair failed\n" );
+ rc = 1;
+ goto destroy;
+ }
+ pid = lutil_detach( no_detach, 0 );
+ if ( pid ) {
+ char buf[4];
+ rc = EXIT_SUCCESS;
+ close( waitfds[1] );
+ if ( read( waitfds[0], buf, 1 ) != 1 ) rc = EXIT_FAILURE;
+ _exit( rc );
+ } else {
+ close( waitfds[0] );
+ }
+ }
+#endif /* HAVE_WINSOCK */
+
+ if ( slapd_pid_file != NULL ) {
+ FILE *fp = fopen( slapd_pid_file, "w" );
+
+ if ( fp == NULL ) {
+ char ebuf[128];
+ int save_errno = errno;
+
+ Debug( LDAP_DEBUG_ANY, "unable to open pid file "
+ "\"%s\": %d (%s)\n",
+ slapd_pid_file, save_errno,
+ AC_STRERROR_R( save_errno, ebuf, sizeof(ebuf) ) );
+
+ free( slapd_pid_file );
+ slapd_pid_file = NULL;
+
+ rc = 1;
+ goto destroy;
+ }
+ fprintf( fp, "%d\n", (int)getpid() );
+ fclose( fp );
+ slapd_pid_file_unlink = 1;
+ }
+
+ if ( slapd_args_file != NULL ) {
+ FILE *fp = fopen( slapd_args_file, "w" );
+
+ if ( fp == NULL ) {
+ char ebuf[128];
+ int save_errno = errno;
+
+ Debug( LDAP_DEBUG_ANY, "unable to open args file "
+ "\"%s\": %d (%s)\n",
+ slapd_args_file, save_errno,
+ AC_STRERROR_R( save_errno, ebuf, sizeof(ebuf) ) );
+
+ free( slapd_args_file );
+ slapd_args_file = NULL;
+
+ rc = 1;
+ goto destroy;
+ }
+
+ for ( i = 0; i < g_argc; i++ ) {
+ fprintf( fp, "%s ", g_argv[i] );
+ }
+ fprintf( fp, "\n" );
+ fclose( fp );
+ slapd_args_file_unlink = 1;
+ }
+
+ /*
+ * FIXME: moved here from lloadd_daemon_task()
+ * because back-monitor db_open() needs it
+ */
+ time( &starttime );
+
+ Debug( LDAP_DEBUG_ANY, "lloadd starting\n" );
+
+#ifndef HAVE_WINSOCK
+ if ( !no_detach ) {
+ (void)!write( waitfds[1], "1", 1 );
+ close( waitfds[1] );
+ }
+#endif
+
+#ifdef HAVE_NT_EVENT_LOG
+ if ( is_NT_Service )
+ lutil_LogStartedEvent( serverName, slap_debug,
+ configfile ? configfile : LLOADD_DEFAULT_CONFIGFILE, urls );
+#endif
+
+ rc = lloadd_daemon( daemon_base );
+
+#ifdef HAVE_NT_SERVICE_MANAGER
+ /* Throw away the event that we used during the startup process. */
+ if ( is_NT_Service ) ldap_pvt_thread_cond_destroy( &started_event );
+#endif
+
+destroy:
+ if ( daemon_base ) {
+ for ( i = 0; signal_handlers[i].signal; i++ ) {
+ if ( signal_handlers[i].event ) {
+ event_del( signal_handlers[i].event );
+ event_free( signal_handlers[i].event );
+ }
+ }
+ event_base_free( daemon_base );
+ }
+
+ if ( check & CHECK_LOGLEVEL ) {
+ (void)loglevel_print( stdout );
+ }
+ /* remember an error during destroy */
+ rc |= lload_global_destroy();
+ rc |= lload_destroy();
+
+stop:
+#ifdef HAVE_NT_EVENT_LOG
+ if ( is_NT_Service ) lutil_LogStoppedEvent( serverName );
+#endif
+
+ Debug( LDAP_DEBUG_ANY, "lloadd stopped.\n" );
+
+#ifdef HAVE_NT_SERVICE_MANAGER
+ lutil_ReportShutdownComplete();
+#endif
+
+#ifdef LOG_DEBUG
+ closelog();
+#endif
+ lloadd_daemon_destroy();
+
+#ifdef HAVE_TLS
+ ldap_pvt_tls_destroy();
+#endif
+
+ if ( slapd_pid_file_unlink ) {
+ unlink( slapd_pid_file );
+ }
+ if ( slapd_args_file_unlink ) {
+ unlink( slapd_args_file );
+ }
+
+ lload_config_destroy();
+
+ if ( configfile ) ch_free( configfile );
+ if ( configdir ) ch_free( configdir );
+ if ( urls ) ch_free( urls );
+ if ( global_host ) ch_free( global_host );
+
+ /* kludge, get symbols referenced */
+ ldap_tavl_free( NULL, NULL );
+
+ ldap_pvt_thread_mutex_destroy( &logfile_mutex );
+ MAIN_RETURN(rc);
+}
+
+#ifdef SIGPIPE
+
+/*
+ * Catch and discard terminated child processes, to avoid zombies.
+ */
+
+static void
+sigpipe( evutil_socket_t sig, short what, void *arg )
+{
+}
+
+#endif /* SIGPIPE */
+
+#ifdef LDAP_SIGCHLD
+
+/*
+ * Catch and discard terminated child processes, to avoid zombies.
+ */
+
+static void
+wait4child( evutil_socket_t sig, short what, void *arg )
+{
+ int save_errno = errno;
+
+#ifdef WNOHANG
+ do
+ errno = 0;
+#ifdef HAVE_WAITPID
+ while ( waitpid( (pid_t)-1, NULL, WNOHANG ) > 0 || errno == EINTR );
+#else
+ while ( wait3( NULL, WNOHANG, NULL ) > 0 || errno == EINTR );
+#endif
+#else
+ (void)wait( NULL );
+#endif
+ errno = save_errno;
+}
+
+#endif /* LDAP_SIGCHLD */