Exemple #1
0
int     main(int argc, char **argv)
{
    VSTRING *buf = vstring_alloc(100);
    MAPS   *maps;

    msg_vstream_init(basename(argv[0]), VSTREAM_ERR);
    if (argc < 3)
	msg_fatal("usage: %s maptype:mapname address...", argv[0]);

    maps = maps_create(argv[1], argv[1], DICT_FLAG_FOLD_FIX);
    mail_params_init();
    if (chdir(var_queue_dir) < 0)
	msg_fatal("chdir(%s): %m", var_queue_dir);
    argv += 1;

    msg_verbose = 1;
    while (--argc && *++argv) {
	msg_info("-- start %s --", *argv);
	smtp_map11_external(vstring_strcpy(buf, *argv), maps, 1);
	msg_info("-- end %s --", *argv);
    }
    vstring_free(buf);
    maps_free(maps);
    return (0);
}
Exemple #2
0
NORETURN multi_server_main(int argc, char **argv, MULTI_SERVER_FN service,...)
{
    const char *myname = "multi_server_main";
    VSTREAM *stream = 0;
    char   *root_dir = 0;
    char   *user_name = 0;
    int     debug_me = 0;
    int     daemon_mode = 1;
    char   *service_name = basename(argv[0]);
    int     delay;
    int     c;
    int     fd;
    va_list ap;
    MAIL_SERVER_INIT_FN pre_init = 0;
    MAIL_SERVER_INIT_FN post_init = 0;
    MAIL_SERVER_LOOP_FN loop = 0;
    int     key;
    char   *transport = 0;

#if 0
    char   *lock_path;
    VSTRING *why;

#endif
    int     alone = 0;
    int     zerolimit = 0;
    WATCHDOG *watchdog;
    char   *oname_val;
    char   *oname;
    char   *oval;
    const char *err;
    char   *generation;
    int     msg_vstream_needed = 0;
    int     redo_syslog_init = 0;

    /*
     * Process environment options as early as we can.
     */
    if (getenv(CONF_ENV_VERB))
	msg_verbose = 1;
    if (getenv(CONF_ENV_DEBUG))
	debug_me = 1;

    /*
     * Don't die when a process goes away unexpectedly.
     */
    signal(SIGPIPE, SIG_IGN);

    /*
     * Don't die for frivolous reasons.
     */
#ifdef SIGXFSZ
    signal(SIGXFSZ, SIG_IGN);
#endif

    /*
     * May need this every now and then.
     */
    var_procname = mystrdup(basename(argv[0]));
    set_mail_conf_str(VAR_PROCNAME, var_procname);

    /*
     * Initialize logging and exit handler. Do the syslog first, so that its
     * initialization completes before we enter the optional chroot jail.
     */
    msg_syslog_init(mail_task(var_procname), LOG_PID, LOG_FACILITY);
    if (msg_verbose)
	msg_info("daemon started");

    /*
     * Check the Postfix library version as soon as we enable logging.
     */
    MAIL_VERSION_CHECK;

    /*
     * Initialize from the configuration file. Allow command-line options to
     * override compiled-in defaults or configured parameter values.
     */
    mail_conf_suck();

    /*
     * Register dictionaries that use higher-level interfaces and protocols.
     */
    mail_dict_init();
 
    /*
     * After database open error, continue execution with reduced
     * functionality.
     */
    dict_allow_surrogate = 1;

    /*
     * Pick up policy settings from master process. Shut up error messages to
     * stderr, because no-one is going to see them.
     */
    opterr = 0;
    while ((c = GETOPT(argc, argv, "cdDi:lm:n:o:s:St:uvVz")) > 0) {
	switch (c) {
	case 'c':
	    root_dir = "setme";
	    break;
	case 'd':
	    daemon_mode = 0;
	    break;
	case 'D':
	    debug_me = 1;
	    break;
	case 'i':
	    mail_conf_update(VAR_MAX_IDLE, optarg);
	    break;
	case 'l':
	    alone = 1;
	    break;
	case 'm':
	    mail_conf_update(VAR_MAX_USE, optarg);
	    break;
	case 'n':
	    service_name = optarg;
	    break;
	case 'o':
	    oname_val = mystrdup(optarg);
	    if ((err = split_nameval(oname_val, &oname, &oval)) != 0)
		msg_fatal("invalid \"-o %s\" option value: %s", optarg, err);
	    mail_conf_update(oname, oval);
	    if (strcmp(oname, VAR_SYSLOG_NAME) == 0)
		redo_syslog_init = 1;
	    myfree(oname_val);
	    break;
	case 's':
	    if ((socket_count = atoi(optarg)) <= 0)
		msg_fatal("invalid socket_count: %s", optarg);
	    break;
	case 'S':
	    stream = VSTREAM_IN;
	    break;
	case 'u':
	    user_name = "setme";
	    break;
	case 't':
	    transport = optarg;
	    break;
	case 'v':
	    msg_verbose++;
	    break;
	case 'V':
	    if (++msg_vstream_needed == 1)
		msg_vstream_init(mail_task(var_procname), VSTREAM_ERR);
	    break;
	case 'z':
	    zerolimit = 1;
	    break;
	default:
	    msg_fatal("invalid option: %c", c);
	    break;
	}
    }

    /*
     * Initialize generic parameters.
     */
    mail_params_init();
    if (redo_syslog_init)
	msg_syslog_init(mail_task(var_procname), LOG_PID, LOG_FACILITY);

    /*
     * If not connected to stdin, stdin must not be a terminal.
     */
    if (daemon_mode && stream == 0 && isatty(STDIN_FILENO)) {
	msg_vstream_init(var_procname, VSTREAM_ERR);
	msg_fatal("do not run this command by hand");
    }

    /*
     * Application-specific initialization.
     */
    va_start(ap, service);
    while ((key = va_arg(ap, int)) != 0) {
	switch (key) {
	case MAIL_SERVER_INT_TABLE:
	    get_mail_conf_int_table(va_arg(ap, CONFIG_INT_TABLE *));
	    break;
	case MAIL_SERVER_LONG_TABLE:
	    get_mail_conf_long_table(va_arg(ap, CONFIG_LONG_TABLE *));
	    break;
	case MAIL_SERVER_STR_TABLE:
	    get_mail_conf_str_table(va_arg(ap, CONFIG_STR_TABLE *));
	    break;
	case MAIL_SERVER_BOOL_TABLE:
	    get_mail_conf_bool_table(va_arg(ap, CONFIG_BOOL_TABLE *));
	    break;
	case MAIL_SERVER_TIME_TABLE:
	    get_mail_conf_time_table(va_arg(ap, CONFIG_TIME_TABLE *));
	    break;
	case MAIL_SERVER_RAW_TABLE:
	    get_mail_conf_raw_table(va_arg(ap, CONFIG_RAW_TABLE *));
	    break;
	case MAIL_SERVER_NINT_TABLE:
	    get_mail_conf_nint_table(va_arg(ap, CONFIG_NINT_TABLE *));
	    break;
	case MAIL_SERVER_NBOOL_TABLE:
	    get_mail_conf_nbool_table(va_arg(ap, CONFIG_NBOOL_TABLE *));
	    break;
	case MAIL_SERVER_PRE_INIT:
	    pre_init = va_arg(ap, MAIL_SERVER_INIT_FN);
	    break;
	case MAIL_SERVER_POST_INIT:
	    post_init = va_arg(ap, MAIL_SERVER_INIT_FN);
	    break;
	case MAIL_SERVER_LOOP:
	    loop = va_arg(ap, MAIL_SERVER_LOOP_FN);
	    break;
	case MAIL_SERVER_EXIT:
	    multi_server_onexit = va_arg(ap, MAIL_SERVER_EXIT_FN);
	    break;
	case MAIL_SERVER_PRE_ACCEPT:
	    multi_server_pre_accept = va_arg(ap, MAIL_SERVER_ACCEPT_FN);
	    break;
	case MAIL_SERVER_PRE_DISCONN:
	    multi_server_pre_disconn = va_arg(ap, MAIL_SERVER_DISCONN_FN);
	    break;
	case MAIL_SERVER_IN_FLOW_DELAY:
	    multi_server_in_flow_delay = 1;
	    break;
	case MAIL_SERVER_SOLITARY:
	    if (stream == 0 && !alone)
		msg_fatal("service %s requires a process limit of 1",
			  service_name);
	    break;
	case MAIL_SERVER_UNLIMITED:
	    if (stream == 0 && !zerolimit)
		msg_fatal("service %s requires a process limit of 0",
			  service_name);
	    break;
	case MAIL_SERVER_PRIVILEGED:
	    if (user_name)
		msg_fatal("service %s requires privileged operation",
			  service_name);
	    break;
	default:
	    msg_panic("%s: unknown argument type: %d", myname, key);
	}
    }
    va_end(ap);

    if (root_dir)
	root_dir = var_queue_dir;
    if (user_name)
	user_name = var_mail_owner;

    /*
     * Can options be required?
     */
    if (stream == 0) {
	if (transport == 0)
	    msg_fatal("no transport type specified");
	if (strcasecmp(transport, MASTER_XPORT_NAME_INET) == 0)
	    multi_server_accept = multi_server_accept_inet;
	else if (strcasecmp(transport, MASTER_XPORT_NAME_UNIX) == 0)
	    multi_server_accept = multi_server_accept_local;
#ifdef MASTER_XPORT_NAME_PASS
	else if (strcasecmp(transport, MASTER_XPORT_NAME_PASS) == 0)
	    multi_server_accept = multi_server_accept_pass;
#endif
	else
	    msg_fatal("unsupported transport type: %s", transport);
    }

    /*
     * Retrieve process generation from environment.
     */
    if ((generation = getenv(MASTER_GEN_NAME)) != 0) {
	if (!alldig(generation))
	    msg_fatal("bad generation: %s", generation);
	OCTAL_TO_UNSIGNED(multi_server_generation, generation);
	if (msg_verbose)
	    msg_info("process generation: %s (%o)",
		     generation, multi_server_generation);
    }

    /*
     * Optionally start the debugger on ourself.
     */
    if (debug_me)
	debug_process();

    /*
     * Traditionally, BSD select() can't handle multiple processes selecting
     * on the same socket, and wakes up every process in select(). See TCP/IP
     * Illustrated volume 2 page 532. We avoid select() collisions with an
     * external lock file.
     */

    /*
     * XXX Can't compete for exclusive access to the listen socket because we
     * also have to monitor existing client connections for service requests.
     */
#if 0
    if (stream == 0 && !alone) {
	lock_path = concatenate(DEF_PID_DIR, "/", transport,
				".", service_name, (char *) 0);
	why = vstring_alloc(1);
	if ((multi_server_lock = safe_open(lock_path, O_CREAT | O_RDWR, 0600,
				      (struct stat *) 0, -1, -1, why)) == 0)
	    msg_fatal("open lock file %s: %s", lock_path, vstring_str(why));
	close_on_exec(vstream_fileno(multi_server_lock), CLOSE_ON_EXEC);
	myfree(lock_path);
	vstring_free(why);
    }
#endif

    /*
     * Set up call-back info.
     */
    multi_server_service = service;
    multi_server_name = service_name;
    multi_server_argv = argv + optind;

    /*
     * Run pre-jail initialization.
     */
    if (chdir(var_queue_dir) < 0)
	msg_fatal("chdir(\"%s\"): %m", var_queue_dir);
    if (pre_init)
	pre_init(multi_server_name, multi_server_argv);

    /*
     * Optionally, restrict the damage that this process can do.
     */
    resolve_local_init();
    tzset();
    chroot_uid(root_dir, user_name);

    /*
     * Run post-jail initialization.
     */
    if (post_init)
	post_init(multi_server_name, multi_server_argv);

    /*
     * Are we running as a one-shot server with the client connection on
     * standard input? If so, make sure the output is written to stdout so as
     * to satisfy common expectation.
     */
    if (stream != 0) {
	vstream_control(stream,
			VSTREAM_CTL_DOUBLE,
			VSTREAM_CTL_WRITE_FD, STDOUT_FILENO,
			VSTREAM_CTL_END);
	service(stream, multi_server_name, multi_server_argv);
	vstream_fflush(stream);
	multi_server_exit();
    }

    /*
     * Running as a semi-resident server. Service connection requests.
     * Terminate when we have serviced a sufficient number of clients, when
     * no-one has been talking to us for a configurable amount of time, or
     * when the master process terminated abnormally.
     */
    if (var_idle_limit > 0)
	event_request_timer(multi_server_timeout, (char *) 0, var_idle_limit);
    for (fd = MASTER_LISTEN_FD; fd < MASTER_LISTEN_FD + socket_count; fd++) {
	event_enable_read(fd, multi_server_accept, CAST_INT_TO_CHAR_PTR(fd));
	close_on_exec(fd, CLOSE_ON_EXEC);
    }
    event_enable_read(MASTER_STATUS_FD, multi_server_abort, (char *) 0);
    close_on_exec(MASTER_STATUS_FD, CLOSE_ON_EXEC);
    close_on_exec(MASTER_FLOW_READ, CLOSE_ON_EXEC);
    close_on_exec(MASTER_FLOW_WRITE, CLOSE_ON_EXEC);
    watchdog = watchdog_create(var_daemon_timeout, (WATCHDOG_FN) 0, (char *) 0);

    /*
     * The event loop, at last.
     */
    while (var_use_limit == 0 || use_count < var_use_limit || client_count > 0) {
	if (multi_server_lock != 0) {
	    watchdog_stop(watchdog);
	    if (myflock(vstream_fileno(multi_server_lock), INTERNAL_LOCK,
			MYFLOCK_OP_EXCLUSIVE) < 0)
		msg_fatal("select lock: %m");
	}
	watchdog_start(watchdog);
	delay = loop ? loop(multi_server_name, multi_server_argv) : -1;
	event_loop(delay);
    }
    multi_server_exit();
}
Exemple #3
0
void    mail_conf_read(void)
{
    mail_conf_suck();
    mail_params_init();
}
Exemple #4
0
int     main(int argc, char **argv)
{
    VSTRING *buffer = vstring_alloc(100);
    char   *bp;
    MAPS   *path = 0;
    const char *result;
    char   *extent;
    char   *cmd;
    char   *in_field;
    char   *query_field;
    char   *out_field;
    char   *strategy_field;
    char   *key_field;
    char   *expect_res;
    char   *expect_ext;
    int     in_form;
    int     query_form;
    int     out_form;
    int     strategy_flags;
    int     ch;
    int     errs = 0;

    /*
     * Parse JCL.
     */
    while ((ch = GETOPT(argc, argv, "v")) > 0) {
	switch (ch) {
	case 'v':
	    msg_verbose++;
	    break;
	default:
	    usage(argv[0]);
	}
    }
    if (argc != optind)
	usage(argv[0]);

    /*
     * Initialize.
     */
#define UPDATE(var, val) do { myfree(var); var = mystrdup(val); } while (0)

    mail_params_init();

    /*
     * TODO: move these assignments into the read/eval loop.
     */
    UPDATE(var_rcpt_delim, "+");
    UPDATE(var_mydomain, "localdomain");
    UPDATE(var_myorigin, "localdomain");
    UPDATE(var_mydest, "localhost.localdomain");
    while (vstring_fgets_nonl(buffer, VSTREAM_IN)) {
	bp = STR(buffer);
	if (msg_verbose)
	    msg_info("> %s", bp);
	if ((cmd = mystrtok(&bp, CHARS_SPACE)) == 0 || *cmd == '#')
	    continue;
	while (ISSPACE(*bp))
	    bp++;

	/*
	 * Visible comment.
	 */
	if (strcmp(cmd, "echo") == 0) {
	    vstream_printf("%s\n", bp);
	}

	/*
	 * Open maps.
	 */
	else if (strcmp(cmd, "maps") == 0) {
	    if (path)
		maps_free(path);
	    path = maps_create(argv[0], bp, DICT_FLAG_LOCK
			     | DICT_FLAG_FOLD_FIX | DICT_FLAG_UTF8_REQUEST);
	    vstream_printf("%s\n", bp);
	    continue;
	}

	/*
	 * Lookup and verify.
	 */
	else if (path && strcmp(cmd, "test") == 0) {

	    /*
	     * Parse the input and expectations.
	     */
	    /* internal, external. */
	    if ((in_field = mystrtok(&bp, ":")) == 0)
		msg_fatal("no input form");
	    if ((in_form = mail_addr_form_from_string(in_field)) < 0)
		msg_fatal("bad input form: '%s'", in_field);
	    if ((query_field = mystrtok(&bp, ":")) == 0)
		msg_fatal("no query form");
	    /* internal, external, external-first. */
	    if ((query_form = mail_addr_form_from_string(query_field)) < 0)
		msg_fatal("bad query form: '%s'", query_field);
	    if ((out_field = mystrtok(&bp, ":")) == 0)
		msg_fatal("no output form");
	    /* internal, external. */
	    if ((out_form = mail_addr_form_from_string(out_field)) < 0)
		msg_fatal("bad output form: '%s'", out_field);
	    if ((strategy_field = mystrtok(&bp, ":")) == 0)
		msg_fatal("no strategy field");
	    if ((strategy_flags = strategy_from_string(strategy_field)) < 0)
		msg_fatal("bad strategy field: '%s'", strategy_field);
	    if ((key_field = mystrtok(&bp, ":")) == 0)
		msg_fatal("no search key");
	    expect_res = mystrtok(&bp, ":");
	    expect_ext = mystrtok(&bp, ":");
	    if (mystrtok(&bp, ":") != 0)
		msg_fatal("garbage after extension field");

	    /*
	     * Lookups.
	     */
	    extent = 0;
	    result = mail_addr_find_opt(path, key_field, &extent,
					in_form, query_form, out_form,
					strategy_flags);
	    vstream_printf("%s:%s -%s-> %s:%s (%s)\n",
	      in_field, key_field, query_field, out_field, result ? result :
			   path->error ? "(try again)" :
			 "(not found)", extent ? extent : "null extension");
	    vstream_fflush(VSTREAM_OUT);

	    /*
	     * Enforce expectations.
	     */
	    if (expect_res && result) {
		if (strcmp(expect_res, result) != 0) {
		    msg_warn("expect result '%s' but got '%s'", expect_res, result);
		    errs = 1;
		    if (expect_ext && extent) {
			if (strcmp(expect_ext, extent) != 0)
			    msg_warn("expect extension '%s' but got '%s'",
				     expect_ext, extent);
			errs = 1;
		    } else if (expect_ext && !extent) {
			msg_warn("expect extension '%s' but got none", expect_ext);
			errs = 1;
		    } else if (!expect_ext && extent) {
			msg_warn("expect no extension but got '%s'", extent);
			errs = 1;
		    }
		}
	    } else if (expect_res && !result) {
		msg_warn("expect result '%s' but got none", expect_res);
		errs = 1;
	    } else if (!expect_res && result) {
		msg_warn("expected no result but got '%s'", result);
		errs = 1;
	    }
	    vstream_fflush(VSTREAM_OUT);
	    if (extent)
		myfree(extent);
	}

	/*
	 * Unknown request.
	 */
	else {
	    msg_warn("bad request: %s", cmd);
	}
    }
    vstring_free(buffer);

    maps_free(path);
    return (errs != 0);
}
Exemple #5
0
NORETURN trigger_server_main(int argc, char **argv, TRIGGER_SERVER_FN service,...)
{
    char   *myname = "trigger_server_main";
    char   *root_dir = 0;
    char   *user_name = 0;
    int     debug_me = 0;
    char   *service_name = basename(argv[0]);
    VSTREAM *stream = 0;
    int     delay;
    int     c;
    int     socket_count = 1;
    int     fd;
    va_list ap;
    MAIL_SERVER_INIT_FN pre_init = 0;
    MAIL_SERVER_INIT_FN post_init = 0;
    MAIL_SERVER_LOOP_FN loop = 0;
    int     key;
    char    buf[TRIGGER_BUF_SIZE];
    int     len;
    char   *transport = 0;
    char   *lock_path;
    VSTRING *why;
    int     alone = 0;
    int     zerolimit = 0;
    WATCHDOG *watchdog;
    char   *oval;

    /*
     * Process environment options as early as we can.
     */
    if (getenv(CONF_ENV_VERB))
	msg_verbose = 1;
    if (getenv(CONF_ENV_DEBUG))
	debug_me = 1;

    /*
     * Don't die when a process goes away unexpectedly.
     */
    signal(SIGPIPE, SIG_IGN);

    /*
     * Don't die for frivolous reasons.
     */
#ifdef SIGXFSZ
    signal(SIGXFSZ, SIG_IGN);
#endif

    /*
     * May need this every now and then.
     */
    var_procname = mystrdup(basename(argv[0]));
    set_mail_conf_str(VAR_PROCNAME, var_procname);

    /*
     * Initialize logging and exit handler. Do the syslog first, so that its
     * initialization completes before we enter the optional chroot jail.
     */
    msg_syslog_init(mail_task(var_procname), LOG_PID, LOG_FACILITY);
    if (msg_verbose)
	msg_info("daemon started");

    /*
     * Initialize from the configuration file. Allow command-line options to
     * override compiled-in defaults or configured parameter values.
     */
    mail_conf_suck();

    /*
     * Register dictionaries that use higher-level interfaces and protocols.
     */
    mail_dict_init();

    /*
     * Pick up policy settings from master process. Shut up error messages to
     * stderr, because no-one is going to see them.
     */
    opterr = 0;
    while ((c = GETOPT(argc, argv, "cDi:lm:n:o:s:St:uvzZ")) > 0) {
	switch (c) {
	case 'c':
	    root_dir = "setme";
	    break;
	case 'D':
	    debug_me = 1;
	    break;
	case 'i':
	    mail_conf_update(VAR_MAX_IDLE, optarg);
	    break;
	case 'l':
	    alone = 1;
	    break;
	case 'm':
	    mail_conf_update(VAR_MAX_USE, optarg);
	    break;
	case 'n':
	    service_name = optarg;
	    break;
	case 'o':
	    if ((oval = split_at(optarg, '=')) == 0)
		oval = "";
	    mail_conf_update(optarg, oval);
	    break;
	case 's':
	    if ((socket_count = atoi(optarg)) <= 0)
		msg_fatal("invalid socket_count: %s", optarg);
	    break;
	case 'S':
	    stream = VSTREAM_IN;
	    break;
	case 't':
	    transport = optarg;
	    break;
	case 'u':
	    user_name = "setme";
	    break;
	case 'v':
	    msg_verbose++;
	    break;
	case 'z':
	    zerolimit = 1;
	    break;
	case 'Z':
	    msg_debug++;
	    break;
	default:
	    msg_fatal("invalid option: %c", c);
	    break;
	}
    }

    /*
     * Initialize generic parameters.
     */
    mail_params_init();

    /*
     * Application-specific initialization.
     */
    va_start(ap, service);
    while ((key = va_arg(ap, int)) != 0) {
	switch (key) {
	case MAIL_SERVER_INT_TABLE:
	    get_mail_conf_int_table(va_arg(ap, CONFIG_INT_TABLE *));
	    break;
	case MAIL_SERVER_STR_TABLE:
	    get_mail_conf_str_table(va_arg(ap, CONFIG_STR_TABLE *));
	    break;
	case MAIL_SERVER_BOOL_TABLE:
	    get_mail_conf_bool_table(va_arg(ap, CONFIG_BOOL_TABLE *));
	    break;
	case MAIL_SERVER_TIME_TABLE:
	    get_mail_conf_time_table(va_arg(ap, CONFIG_TIME_TABLE *));
	    break;
	case MAIL_SERVER_RAW_TABLE:
	    get_mail_conf_raw_table(va_arg(ap, CONFIG_RAW_TABLE *));
	    break;
	case MAIL_SERVER_PRE_INIT:
	    pre_init = va_arg(ap, MAIL_SERVER_INIT_FN);
	    break;
	case MAIL_SERVER_POST_INIT:
	    post_init = va_arg(ap, MAIL_SERVER_INIT_FN);
	    break;
	case MAIL_SERVER_LOOP:
	    loop = va_arg(ap, MAIL_SERVER_LOOP_FN);
	    break;
	case MAIL_SERVER_EXIT:
	    trigger_server_onexit = va_arg(ap, MAIL_SERVER_EXIT_FN);
	    break;
	case MAIL_SERVER_PRE_ACCEPT:
	    trigger_server_pre_accept = va_arg(ap, MAIL_SERVER_ACCEPT_FN);
	    break;
	case MAIL_SERVER_IN_FLOW_DELAY:
	    trigger_server_in_flow_delay = 1;
	    break;
	case MAIL_SERVER_SOLITARY:
	    if (!alone)
		msg_fatal("service %s requires a process limit of 1",
			  service_name);
	    break;
	case MAIL_SERVER_UNLIMITED:
	    if (!zerolimit)
		msg_fatal("service %s requires a process limit of 0",
			  service_name);
	    break;
	default:
	    msg_panic("%s: unknown argument type: %d", myname, key);
	}
    }
    va_end(ap);

    if (root_dir)
	root_dir = var_queue_dir;
    if (user_name)
	user_name = var_mail_owner;

    /*
     * If not connected to stdin, stdin must not be a terminal.
     */
    if (stream == 0 && isatty(STDIN_FILENO)) {
	msg_vstream_init(var_procname, VSTREAM_ERR);
	msg_fatal("do not run this command by hand");
    }

    /*
     * Can options be required?
     * 
     * XXX Initially this code was implemented with UNIX-domain sockets, but
     * Solaris <= 2.5 UNIX-domain sockets misbehave hopelessly when the
     * client disconnects before the server has accepted the connection.
     * Symptom: the server accept() fails with EPIPE or EPROTO, but the
     * socket stays readable, so that the program goes into a wasteful loop.
     * 
     * The initial fix was to use FIFOs, but those turn out to have their own
     * problems, witness the workarounds in the fifo_listen() routine.
     * Therefore we support both FIFOs and UNIX-domain sockets, so that the
     * user can choose whatever works best.
     * 
     * Well, I give up. Solaris UNIX-domain sockets still don't work properly,
     * so it will have to limp along with a streams-specific alternative.
     */
    if (stream == 0) {
	if (transport == 0)
	    msg_fatal("no transport type specified");
	if (strcasecmp(transport, MASTER_XPORT_NAME_UNIX) == 0)
	    trigger_server_accept = trigger_server_accept_local;
	else if (strcasecmp(transport, MASTER_XPORT_NAME_FIFO) == 0)
	    trigger_server_accept = trigger_server_accept_fifo;
	else
	    msg_fatal("unsupported transport type: %s", transport);
    }

    /*
     * Optionally start the debugger on ourself.
     */
    if (debug_me)
	debug_process();

    /*
     * Traditionally, BSD select() can't handle multiple processes selecting
     * on the same socket, and wakes up every process in select(). See TCP/IP
     * Illustrated volume 2 page 532. We avoid select() collisions with an
     * external lock file.
     */
    if (stream == 0 && !alone) {
	lock_path = concatenate(DEF_PID_DIR, "/", transport,
				".", service_name, (char *) 0);
	why = vstring_alloc(1);
	if ((trigger_server_lock = safe_open(lock_path, O_CREAT | O_RDWR, 0600,
				      (struct stat *) 0, -1, -1, why)) == 0)
	    msg_fatal("open lock file %s: %s", lock_path, vstring_str(why));
	close_on_exec(vstream_fileno(trigger_server_lock), CLOSE_ON_EXEC);
	myfree(lock_path);
	vstring_free(why);
    }

    /*
     * Set up call-back info.
     */
    trigger_server_service = service;
    trigger_server_name = service_name;
    trigger_server_argv = argv + optind;

    /*
     * Run pre-jail initialization.
     */
    if (chdir(var_queue_dir) < 0)
	msg_fatal("chdir(\"%s\"): %m", var_queue_dir);
    if (pre_init)
	pre_init(trigger_server_name, trigger_server_argv);

    /*
     * Optionally, restrict the damage that this process can do.
     */
    resolve_local_init();
    chroot_uid(root_dir, user_name);

    /*
     * Run post-jail initialization.
     */
    if (post_init)
	post_init(trigger_server_name, trigger_server_argv);

    /*
     * Are we running as a one-shot server with the client connection on
     * standard input?
     */
    if (stream != 0) {
	if ((len = read(vstream_fileno(stream), buf, sizeof(buf))) <= 0)
	    msg_fatal("read: %m");
	service(buf, len, trigger_server_name, trigger_server_argv);
	vstream_fflush(stream);
	trigger_server_exit();
    }

    /*
     * Running as a semi-resident server. Service connection requests.
     * Terminate when we have serviced a sufficient number of clients, when
     * no-one has been talking to us for a configurable amount of time, or
     * when the master process terminated abnormally.
     */
    if (var_idle_limit > 0)
	event_request_timer(trigger_server_timeout, (char *) 0, var_idle_limit);
    for (fd = MASTER_LISTEN_FD; fd < MASTER_LISTEN_FD + socket_count; fd++) {
	event_enable_read(fd, trigger_server_accept, CAST_INT_TO_CHAR_PTR(fd));
	close_on_exec(fd, CLOSE_ON_EXEC);
    }
    event_enable_read(MASTER_STATUS_FD, trigger_server_abort, (char *) 0);
    close_on_exec(MASTER_STATUS_FD, CLOSE_ON_EXEC);
    close_on_exec(MASTER_FLOW_READ, CLOSE_ON_EXEC);
    close_on_exec(MASTER_FLOW_WRITE, CLOSE_ON_EXEC);
    watchdog = watchdog_create(1000, (WATCHDOG_FN) 0, (char *) 0);

    /*
     * The event loop, at last.
     */
    while (var_use_limit == 0 || use_count < var_use_limit) {
	if (trigger_server_lock != 0) {
	    watchdog_stop(watchdog);
	    if (myflock(vstream_fileno(trigger_server_lock), INTERNAL_LOCK,
			MYFLOCK_OP_EXCLUSIVE) < 0)
		msg_fatal("select lock: %m");
	}
	watchdog_start(watchdog);
	delay = loop ? loop(trigger_server_name, trigger_server_argv) : -1;
	event_loop(delay);
    }
    trigger_server_exit();
}