コード例 #1
0
ファイル: multi_server.c プロジェクト: LMDB/postfix
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();
}
コード例 #2
0
int     main(int argc, char **argv)
{
    int     ch;
    int     fd;
    struct stat st;
    int     junk;
    ARGV   *ext_argv = 0;
    int     param_class = PC_PARAM_MASK_CLASS;
    static const NAME_MASK param_class_table[] = {
	"builtin", PC_PARAM_FLAG_BUILTIN,
	"service", PC_PARAM_FLAG_SERVICE,
	"user", PC_PARAM_FLAG_USER,
	"all", PC_PARAM_MASK_CLASS,
	0,
    };

    /*
     * Fingerprint executables and core dumps.
     */
    MAIL_VERSION_STAMP_ALLOCATE;

    /*
     * Be consistent with file permissions.
     */
    umask(022);

    /*
     * To minimize confusion, make sure that the standard file descriptors
     * are open before opening anything else. XXX Work around for 44BSD where
     * fstat can return EBADF on an open file descriptor.
     */
    for (fd = 0; fd < 3; fd++)
	if (fstat(fd, &st) == -1
	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
	    msg_fatal("open /dev/null: %m");

    /*
     * Set up logging.
     */
    msg_vstream_init(argv[0], VSTREAM_ERR);

    /*
     * Parse JCL.
     */
    while ((ch = GETOPT(argc, argv, "aAbc:C:deEf#hlmMntv")) > 0) {
	switch (ch) {
	case 'a':
	    cmd_mode |= SHOW_SASL_SERV;
	    break;
	case 'A':
	    cmd_mode |= SHOW_SASL_CLNT;
	    break;
	case 'b':
	    if (ext_argv)
		msg_fatal("specify one of -b and -t");
	    ext_argv = argv_alloc(2);
	    argv_add(ext_argv, "bounce", "-SVnexpand_templates", (char *) 0);
	    break;
	case 'c':
	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
		msg_fatal("out of memory");
	    break;
	case 'C':
	    param_class = name_mask_opt("-C option", param_class_table,
				    optarg, NAME_MASK_ANY_CASE | NAME_MASK_FATAL);
	    break;
	case 'd':
	    cmd_mode |= SHOW_DEFS;
	    break;
	case 'e':
	    cmd_mode |= EDIT_MAIN;
	    break;
	case 'f':
	    cmd_mode |= FOLD_LINE;
	    break;

	    /*
	     * People, this does not work unless you properly handle default
	     * settings. For example, fast_flush_domains = $relay_domains
	     * must not evaluate to the empty string when relay_domains is
	     * left at its default setting of $mydestination.
	     */
#if 0
	case 'E':
	    cmd_mode |= SHOW_EVAL;
	    break;
#endif
	case '#':
	    cmd_mode = COMMENT_OUT;
	    break;

	case 'h':
	    cmd_mode &= ~SHOW_NAME;
	    break;
	case 'l':
	    cmd_mode |= SHOW_LOCKS;
	    break;
	case 'm':
	    cmd_mode |= SHOW_MAPS;
	    break;
	case 'M':
	    cmd_mode |= SHOW_MASTER;
	    break;
	case 'n':
	    cmd_mode |= SHOW_NONDEF;
	    break;
	case 't':
	    if (ext_argv)
		msg_fatal("specify one of -b and -t");
	    ext_argv = argv_alloc(2);
	    argv_add(ext_argv, "bounce", "-SVndump_templates", (char *) 0);
	    break;
	case 'v':
	    msg_verbose++;
	    break;
	default:
	    msg_fatal("usage: %s [-a (server SASL types)] [-A (client SASL types)] [-b (bounce templates)] [-c config_dir] [-C param_class] [-d (defaults)] [-e (edit)] [-f (fold lines)] [-# (comment-out)] [-h (no names)] [-l (lock types)] [-m (map types)] [-M (master.cf)] [-n (non-defaults)] [-v] [name...]", argv[0]);
	}
    }

    /*
     * Sanity check.
     */
    junk = (cmd_mode & (SHOW_DEFS | SHOW_NONDEF | SHOW_MAPS | SHOW_LOCKS | EDIT_MAIN | SHOW_SASL_SERV | SHOW_SASL_CLNT | COMMENT_OUT | SHOW_MASTER));
    if (junk != 0 && ((junk != SHOW_DEFS && junk != SHOW_NONDEF
	     && junk != SHOW_MAPS && junk != SHOW_LOCKS && junk != EDIT_MAIN
		       && junk != SHOW_SASL_SERV && junk != SHOW_SASL_CLNT
		       && junk != COMMENT_OUT && junk != SHOW_MASTER)
		      || ext_argv != 0))
	msg_fatal("specify one of -a, -A, -b, -d, -e, -#, -l, -m, -M and -n");

    /*
     * Display bounce template information and exit.
     */
    if (ext_argv) {
	if (argv[optind]) {
	    if (argv[optind + 1])
		msg_fatal("options -b and -t require at most one template file");
	    argv_add(ext_argv, "-o",
		     concatenate(VAR_BOUNCE_TMPL, "=",
				 argv[optind], (char *) 0),
		     (char *) 0);
	}
	/* Grr... */
	argv_add(ext_argv, "-o",
		 concatenate(VAR_QUEUE_DIR, "=", ".", (char *) 0),
		 (char *) 0);
	mail_conf_read();
	mail_run_replace(var_daemon_dir, ext_argv->argv);
	/* NOTREACHED */
    }

    /*
     * If showing map types, show them and exit
     */
    if (cmd_mode & SHOW_MAPS) {
	mail_dict_init();
	show_maps();
    }

    /*
     * If showing locking methods, show them and exit
     */
    else if (cmd_mode & SHOW_LOCKS) {
	show_locks();
    }

    /*
     * If showing master.cf entries, show them and exit
     */
    else if (cmd_mode & SHOW_MASTER) {
	read_master(FAIL_ON_OPEN_ERROR);
	show_master(cmd_mode, argv + optind);
    }

    /*
     * If showing SASL plug-in types, show them and exit
     */
    else if (cmd_mode & SHOW_SASL_SERV) {
	show_sasl(SHOW_SASL_SERV);
    } else if (cmd_mode & SHOW_SASL_CLNT) {
	show_sasl(SHOW_SASL_CLNT);
    }

    /*
     * Edit main.cf.
     */
    else if (cmd_mode & (EDIT_MAIN | COMMENT_OUT)) {
	edit_parameters(cmd_mode, argc - optind, argv + optind);
    } else if (cmd_mode == DEF_MODE
	       && argv[optind] && strchr(argv[optind], '=')) {
	edit_parameters(cmd_mode | EDIT_MAIN, argc - optind, argv + optind);
    }

    /*
     * If showing non-default values, read main.cf.
     */
    else {
	if ((cmd_mode & SHOW_DEFS) == 0) {
	    read_parameters();
	    set_parameters();
	}
	register_builtin_parameters();

	/*
	 * Add service-dependent parameters (service names from master.cf)
	 * and user-defined parameters ($name macros in parameter values in
	 * main.cf and master.cf, but only if those names have a name=value
	 * in main.cf or master.cf).
	 */
	read_master(WARN_ON_OPEN_ERROR);
	register_service_parameters();
	if ((cmd_mode & SHOW_DEFS) == 0)
	    register_user_parameters();

	/*
	 * Show the requested values.
	 */
	show_parameters(cmd_mode, param_class, argv + optind);

	/*
	 * Flag unused parameters. This makes no sense with "postconf -d",
	 * because that ignores all the user-specified parameters and
	 * user-specified macro expansions in main.cf.
	 */
	if ((cmd_mode & SHOW_DEFS) == 0) {
	    flag_unused_main_parameters();
	    flag_unused_master_parameters();
	}
    }
    vstream_fflush(VSTREAM_OUT);
    exit(0);
}
コード例 #3
0
ファイル: postqueue.c プロジェクト: Jingeun/tongsu_smtp
int     main(int argc, char **argv)
{
    struct stat st;
    char   *slash;
    int     c;
    int     fd;
    int     mode = PQ_MODE_DEFAULT;
    char   *site_to_flush = 0;
    char   *id_to_flush = 0;
    ARGV   *import_env;
    int     bad_site;

    /*
     * Fingerprint executables and core dumps.
     */
    MAIL_VERSION_STAMP_ALLOCATE;

    /*
     * Be consistent with file permissions.
     */
    umask(022);

    /*
     * To minimize confusion, make sure that the standard file descriptors
     * are open before opening anything else. XXX Work around for 44BSD where
     * fstat can return EBADF on an open file descriptor.
     */
    for (fd = 0; fd < 3; fd++)
	if (fstat(fd, &st) == -1
	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
	    msg_fatal_status(EX_UNAVAILABLE, "open /dev/null: %m");

    /*
     * Initialize. Set up logging, read the global configuration file and
     * extract configuration information. Set up signal handlers so that we
     * can clean up incomplete output.
     */
    if ((slash = strrchr(argv[0], '/')) != 0 && slash[1])
	argv[0] = slash + 1;
    msg_vstream_init(argv[0], VSTREAM_ERR);
    msg_cleanup(unavailable);
    msg_syslog_init(mail_task("postqueue"), LOG_PID, LOG_FACILITY);
    set_mail_conf_str(VAR_PROCNAME, var_procname = mystrdup(argv[0]));

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

    /*
     * Parse JCL. This program is set-gid and must sanitize all command-line
     * parameters. The configuration directory argument is validated by the
     * mail configuration read routine. Don't do complex things until we have
     * completed initializations.
     */
    while ((c = GETOPT(argc, argv, "c:fi:ps:v")) > 0) {
	switch (c) {
	case 'c':				/* non-default configuration */
	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
		msg_fatal_status(EX_UNAVAILABLE, "out of memory");
	    break;
	case 'f':				/* flush queue */
	    if (mode != PQ_MODE_DEFAULT)
		usage();
	    mode = PQ_MODE_FLUSH_QUEUE;
	    break;
	case 'i':				/* flush queue file */
	    if (mode != PQ_MODE_DEFAULT)
		usage();
	    mode = PQ_MODE_FLUSH_FILE;
	    id_to_flush = optarg;
	    break;
	case 'p':				/* traditional mailq */
	    if (mode != PQ_MODE_DEFAULT)
		usage();
	    mode = PQ_MODE_MAILQ_LIST;
	    break;
	case 's':				/* flush site */
	    if (mode != PQ_MODE_DEFAULT)
		usage();
	    mode = PQ_MODE_FLUSH_SITE;
	    site_to_flush = optarg;
	    break;
	case 'v':
	    if (geteuid() == 0)
		msg_verbose++;
	    break;
	default:
	    usage();
	}
    }
    if (argc > optind)
	usage();

    /*
     * Further initialization...
     */
    mail_conf_read();
    /* Re-evaluate mail_task() after reading main.cf. */
    msg_syslog_init(mail_task("postqueue"), LOG_PID, LOG_FACILITY);
    mail_dict_init();				/* proxy, sql, ldap */
    get_mail_conf_str_table(str_table);

    /*
     * This program is designed to be set-gid, which makes it a potential
     * target for attack. If not running as root, strip the environment so we
     * don't have to trust the C library. If running as root, don't strip the
     * environment so that showq can receive non-default configuration
     * directory info when the mail system is down.
     */
    if (geteuid() != 0) {
	import_env = mail_parm_split(VAR_IMPORT_ENVIRON, var_import_environ);
	clean_env(import_env->argv);
	argv_free(import_env);
    }
    if (chdir(var_queue_dir))
	msg_fatal_status(EX_UNAVAILABLE, "chdir %s: %m", var_queue_dir);

    signal(SIGPIPE, SIG_IGN);

    /* End of initializations. */

    /*
     * Further input validation.
     */
    if (site_to_flush != 0) {
	bad_site = 0;
	if (*site_to_flush == '[') {
	    bad_site = !valid_mailhost_literal(site_to_flush, DONT_GRIPE);
	} else {
	    bad_site = !valid_hostname(site_to_flush, DONT_GRIPE);
	}
	if (bad_site)
	    msg_fatal_status(EX_USAGE,
	      "Cannot flush mail queue - invalid destination: \"%.100s%s\"",
		   site_to_flush, strlen(site_to_flush) > 100 ? "..." : "");
    }
    if (id_to_flush != 0) {
	if (!mail_queue_id_ok(id_to_flush))
	    msg_fatal_status(EX_USAGE,
		       "Cannot flush queue ID - invalid name: \"%.100s%s\"",
		       id_to_flush, strlen(id_to_flush) > 100 ? "..." : "");
    }

    /*
     * Start processing.
     */
    switch (mode) {
    default:
	msg_panic("unknown operation mode: %d", mode);
	/* NOTREACHED */
    case PQ_MODE_MAILQ_LIST:
	show_queue();
	exit(0);
	break;
    case PQ_MODE_FLUSH_SITE:
	flush_site(site_to_flush);
	exit(0);
	break;
    case PQ_MODE_FLUSH_FILE:
	flush_file(id_to_flush);
	exit(0);
	break;
    case PQ_MODE_FLUSH_QUEUE:
	flush_queue();
	exit(0);
	break;
    case PQ_MODE_DEFAULT:
	usage();
	/* NOTREACHED */
    }
}
コード例 #4
0
ファイル: postmap.c プロジェクト: jsarenik/postfix-musl
int     main(int argc, char **argv)
{
    char   *path_name;
    int     ch;
    int     fd;
    char   *slash;
    struct stat st;
    int     postmap_flags = POSTMAP_FLAG_AS_OWNER | POSTMAP_FLAG_SAVE_PERM;
    int     open_flags = O_RDWR | O_CREAT | O_TRUNC;
    int     dict_flags = (DICT_FLAG_DUP_WARN | DICT_FLAG_FOLD_FIX
			  | DICT_FLAG_UTF8_REQUEST);
    char   *query = 0;
    char   *delkey = 0;
    int     sequence = 0;
    int     found;
    int     force_utf8 = 0;

    /*
     * Fingerprint executables and core dumps.
     */
    MAIL_VERSION_STAMP_ALLOCATE;

    /*
     * Be consistent with file permissions.
     */
    umask(022);

    /*
     * To minimize confusion, make sure that the standard file descriptors
     * are open before opening anything else. XXX Work around for 44BSD where
     * fstat can return EBADF on an open file descriptor.
     */
    for (fd = 0; fd < 3; fd++)
	if (fstat(fd, &st) == -1
	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
	    msg_fatal("open /dev/null: %m");

    /*
     * Process environment options as early as we can. We are not set-uid,
     * and we are supposed to be running in a controlled environment.
     */
    if (getenv(CONF_ENV_VERB))
	msg_verbose = 1;

    /*
     * Initialize. Set up logging, read the global configuration file and
     * extract configuration information.
     */
    if ((slash = strrchr(argv[0], '/')) != 0 && slash[1])
	argv[0] = slash + 1;
    msg_vstream_init(argv[0], VSTREAM_ERR);
    msg_syslog_init(mail_task(argv[0]), LOG_PID, LOG_FACILITY);

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

    /*
     * Parse JCL.
     */
    while ((ch = GETOPT(argc, argv, "Nbc:d:fhimnopq:rsuUvw")) > 0) {
	switch (ch) {
	default:
	    usage(argv[0]);
	    break;
	case 'N':
	    dict_flags |= DICT_FLAG_TRY1NULL;
	    dict_flags &= ~DICT_FLAG_TRY0NULL;
	    break;
	case 'b':
	    postmap_flags |= POSTMAP_FLAG_BODY_KEY;
	    break;
	case 'c':
	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
		msg_fatal("out of memory");
	    break;
	case 'd':
	    if (sequence || query || delkey)
		msg_fatal("specify only one of -s -q or -d");
	    delkey = optarg;
	    break;
	case 'f':
	    dict_flags &= ~DICT_FLAG_FOLD_FIX;
	    break;
	case 'h':
	    postmap_flags |= POSTMAP_FLAG_HEADER_KEY;
	    break;
	case 'i':
	    open_flags &= ~O_TRUNC;
	    break;
	case 'm':
	    postmap_flags |= POSTMAP_FLAG_MIME_KEY;
	    break;
	case 'n':
	    dict_flags |= DICT_FLAG_TRY0NULL;
	    dict_flags &= ~DICT_FLAG_TRY1NULL;
	    break;
	case 'o':
	    postmap_flags &= ~POSTMAP_FLAG_AS_OWNER;
	    break;
	case 'p':
	    postmap_flags &= ~POSTMAP_FLAG_SAVE_PERM;
	    break;
	case 'q':
	    if (sequence || query || delkey)
		msg_fatal("specify only one of -s -q or -d");
	    query = optarg;
	    break;
	case 'r':
	    dict_flags &= ~(DICT_FLAG_DUP_WARN | DICT_FLAG_DUP_IGNORE);
	    dict_flags |= DICT_FLAG_DUP_REPLACE;
	    break;
	case 's':
	    if (query || delkey)
		msg_fatal("specify only one of -s or -q or -d");
	    sequence = 1;
	    break;
	case 'u':
	    dict_flags &= ~DICT_FLAG_UTF8_REQUEST;
	    break;
	case 'U':
	    force_utf8 = 1;
	    break;
	case 'v':
	    msg_verbose++;
	    break;
	case 'w':
	    dict_flags &= ~(DICT_FLAG_DUP_WARN | DICT_FLAG_DUP_REPLACE);
	    dict_flags |= DICT_FLAG_DUP_IGNORE;
	    break;
	}
    }
    mail_conf_read();
    if (strcmp(var_syslog_name, DEF_SYSLOG_NAME) != 0)
	msg_syslog_init(mail_task(argv[0]), LOG_PID, LOG_FACILITY);
    mail_dict_init();
    if ((query == 0 || strcmp(query, "-") != 0)
	&& (postmap_flags & POSTMAP_FLAG_ANY_KEY))
	msg_fatal("specify -b -h or -m only with \"-q -\"");
    if ((postmap_flags & POSTMAP_FLAG_ANY_KEY) != 0
	&& (postmap_flags & POSTMAP_FLAG_ANY_KEY)
	== (postmap_flags & POSTMAP_FLAG_MIME_KEY))
	msg_warn("ignoring -m option without -b or -h");
    if ((postmap_flags & (POSTMAP_FLAG_ANY_KEY & ~POSTMAP_FLAG_MIME_KEY))
	&& force_utf8 == 0)
	dict_flags &= ~DICT_FLAG_UTF8_MASK;

    /*
     * Use the map type specified by the user, or fall back to a default
     * database type.
     */
    if (delkey) {				/* remove entry */
	if (optind + 1 > argc)
	    usage(argv[0]);
	if (strcmp(delkey, "-") == 0)
	    exit(postmap_deletes(VSTREAM_IN, argv + optind, argc - optind,
				 dict_flags | DICT_FLAG_LOCK) == 0);
	found = 0;
	while (optind < argc) {
	    if ((path_name = split_at(argv[optind], ':')) != 0) {
		found |= postmap_delete(argv[optind], path_name, delkey,
					dict_flags | DICT_FLAG_LOCK);
	    } else {
		found |= postmap_delete(var_db_type, argv[optind], delkey,
					dict_flags | DICT_FLAG_LOCK);
	    }
	    optind++;
	}
	exit(found ? 0 : 1);
    } else if (query) {				/* query map(s) */
	if (optind + 1 > argc)
	    usage(argv[0]);
	if (strcmp(query, "-") == 0)
	    exit(postmap_queries(VSTREAM_IN, argv + optind, argc - optind,
			  postmap_flags, dict_flags | DICT_FLAG_LOCK) == 0);
	while (optind < argc) {
	    if ((path_name = split_at(argv[optind], ':')) != 0) {
		found = postmap_query(argv[optind], path_name, query,
				      dict_flags | DICT_FLAG_LOCK);
	    } else {
		found = postmap_query(var_db_type, argv[optind], query,
				      dict_flags | DICT_FLAG_LOCK);
	    }
	    if (found)
		exit(0);
	    optind++;
	}
	exit(1);
    } else if (sequence) {
	while (optind < argc) {
	    if ((path_name = split_at(argv[optind], ':')) != 0) {
		postmap_seq(argv[optind], path_name,
			    dict_flags | DICT_FLAG_LOCK);
	    } else {
		postmap_seq(var_db_type, argv[optind],
			    dict_flags | DICT_FLAG_LOCK);
	    }
	    exit(0);
	}
	exit(1);
    } else {					/* create/update map(s) */
	if (optind + 1 > argc)
	    usage(argv[0]);
	while (optind < argc) {
	    if ((path_name = split_at(argv[optind], ':')) != 0) {
		postmap(argv[optind], path_name, postmap_flags,
			open_flags, dict_flags);
	    } else {
		postmap(var_db_type, argv[optind], postmap_flags,
			open_flags, dict_flags);
	    }
	    optind++;
	}
	exit(0);
    }
}
コード例 #5
0
ファイル: postconf.c プロジェクト: aosm/postfix
int     main(int argc, char **argv)
{
    int     ch;
    int     fd;
    struct stat st;
    ARGV   *ext_argv = 0;
    int     param_class = PCF_PARAM_MASK_CLASS;
    static const NAME_MASK param_class_table[] = {
	"builtin", PCF_PARAM_FLAG_BUILTIN,
	"service", PCF_PARAM_FLAG_SERVICE,
	"user", PCF_PARAM_FLAG_USER,
	"all", PCF_PARAM_MASK_CLASS,
	0,
    };
    ARGV   *override_params = 0;

    /*
     * Fingerprint executables and core dumps.
     */
    MAIL_VERSION_STAMP_ALLOCATE;

    /*
     * Be consistent with file permissions.
     */
    umask(022);

    /*
     * To minimize confusion, make sure that the standard file descriptors
     * are open before opening anything else. XXX Work around for 44BSD where
     * fstat can return EBADF on an open file descriptor.
     */
    for (fd = 0; fd < 3; fd++)
	if (fstat(fd, &st) == -1
	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
	    msg_fatal("open /dev/null: %m");

    /*
     * Set up logging.
     */
    msg_vstream_init(argv[0], VSTREAM_ERR);

    /*
     * Parse JCL.
     */
    while ((ch = GETOPT(argc, argv, "aAbc:C:deEfFhlmMno:pPtvxX#")) > 0) {
	switch (ch) {
	case 'a':
	    pcf_cmd_mode |= PCF_SHOW_SASL_SERV;
	    break;
	case 'A':
	    pcf_cmd_mode |= PCF_SHOW_SASL_CLNT;
	    break;
	case 'b':
	    pcf_cmd_mode |= PCF_EXP_DSN_TEMPL;
	    if (ext_argv)
		msg_fatal("specify one of -b and -t");
	    ext_argv = argv_alloc(2);
	    argv_add(ext_argv, "bounce", "-SVnexpand_templates", (char *) 0);
	    break;
	case 'c':
	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
		msg_fatal("out of memory");
	    break;
	case 'C':
	    param_class = name_mask_opt("-C option", param_class_table,
			      optarg, NAME_MASK_ANY_CASE | NAME_MASK_FATAL);
	    break;
	case 'd':
	    pcf_cmd_mode |= PCF_SHOW_DEFS;
	    break;
	case 'e':
	    pcf_cmd_mode |= PCF_EDIT_CONF;
	    break;
	case 'f':
	    pcf_cmd_mode |= PCF_FOLD_LINE;
	    break;
	case 'F':
	    pcf_cmd_mode |= PCF_MASTER_FLD;
	    break;
	case '#':
	    pcf_cmd_mode |= PCF_COMMENT_OUT;
	    break;
	case 'h':
	    pcf_cmd_mode |= PCF_HIDE_NAME;
	    break;
	case 'l':
	    pcf_cmd_mode |= PCF_SHOW_LOCKS;
	    break;
	case 'm':
	    pcf_cmd_mode |= PCF_SHOW_MAPS;
	    break;
	case 'M':
	    pcf_cmd_mode |= PCF_MASTER_ENTRY;
	    break;
	case 'n':
	    pcf_cmd_mode |= PCF_SHOW_NONDEF;
	    break;
	case 'o':
	    pcf_cmd_mode |= PCF_MAIN_OVER;
	    if (override_params == 0)
		override_params = argv_alloc(2);
	    argv_add(override_params, optarg, (char *) 0);
	    break;
	case 'p':
	    pcf_cmd_mode |= PCF_MAIN_PARAM;
	    break;
	case 'P':
	    pcf_cmd_mode |= PCF_MASTER_PARAM;
	    break;
	case 't':
	    pcf_cmd_mode |= PCF_DUMP_DSN_TEMPL;
	    if (ext_argv)
		msg_fatal("specify one of -b and -t");
	    ext_argv = argv_alloc(2);
	    argv_add(ext_argv, "bounce", "-SVndump_templates", (char *) 0);
	    break;
	case 'x':
	    pcf_cmd_mode |= PCF_SHOW_EVAL;
	    break;
	case 'X':
	    /* This is irreversible, therefore require two-finger action. */
	    pcf_cmd_mode |= PCF_EDIT_EXCL;
	    break;
	case 'v':
	    msg_verbose++;
	    break;
	default:
	    usage(argv[0]);
	}
    }

    /*
     * Make all options explicit, before checking their compatibility.
     */
#define PCF_MAIN_OR_MASTER \
	(PCF_MAIN_PARAM | PCF_MASTER_ENTRY | PCF_MASTER_FLD | PCF_MASTER_PARAM)

    if ((pcf_cmd_mode & pcf_incompat_options[0]) == 0)
	pcf_cmd_mode |= PCF_MAIN_PARAM;
    if ((pcf_cmd_mode & PCF_MAIN_OR_MASTER)
	&& argv[optind] && strchr(argv[optind], '='))
	pcf_cmd_mode |= PCF_EDIT_CONF;

    /*
     * Sanity check.
     */
    pcf_check_exclusive_options(pcf_cmd_mode);
    pcf_check_compat_options(pcf_cmd_mode);

    if ((pcf_cmd_mode & PCF_EDIT_CONF) && argc == optind)
	msg_fatal("-e requires name=value argument");

    /*
     * Display bounce template information and exit.
     */
    if (ext_argv) {
	if (argv[optind]) {
	    if (argv[optind + 1])
		msg_fatal("options -b and -t require at most one template file");
	    argv_add(ext_argv, "-o",
		     concatenate(VAR_BOUNCE_TMPL, "=",
				 argv[optind], (char *) 0),
		     (char *) 0);
	}
	/* Grr... */
	argv_add(ext_argv, "-o",
		 concatenate(VAR_QUEUE_DIR, "=", ".", (char *) 0),
		 (char *) 0);
	mail_conf_read();
	mail_run_replace(var_daemon_dir, ext_argv->argv);
	/* NOTREACHED */
    }

    /*
     * If showing map types, show them and exit
     */
    if (pcf_cmd_mode & PCF_SHOW_MAPS) {
	mail_dict_init();
	pcf_show_maps();
    }

    /*
     * If showing locking methods, show them and exit
     */
    else if (pcf_cmd_mode & PCF_SHOW_LOCKS) {
	pcf_show_locks();
    }

    /*
     * If showing master.cf entries, show them and exit
     */
    else if ((pcf_cmd_mode & (PCF_MASTER_ENTRY | PCF_MASTER_FLD | PCF_MASTER_PARAM))
    && !(pcf_cmd_mode & (PCF_EDIT_CONF | PCF_EDIT_EXCL | PCF_COMMENT_OUT))) {
	pcf_read_master(PCF_FAIL_ON_OPEN_ERROR);
	pcf_read_parameters();
	if (override_params)
	    pcf_set_parameters(override_params->argv);
	pcf_register_builtin_parameters(basename(argv[0]), getpid());
	pcf_register_service_parameters();
	pcf_register_user_parameters();
	if (pcf_cmd_mode & PCF_MASTER_FLD)
	    pcf_show_master_fields(VSTREAM_OUT, pcf_cmd_mode, argc - optind,
				   argv + optind);
	else if (pcf_cmd_mode & PCF_MASTER_PARAM)
	    pcf_show_master_params(VSTREAM_OUT, pcf_cmd_mode, argc - optind,
				   argv + optind);
	else
	    pcf_show_master_entries(VSTREAM_OUT, pcf_cmd_mode, argc - optind,
				    argv + optind);
    }

    /*
     * If showing SASL plug-in types, show them and exit
     */
    else if (pcf_cmd_mode & PCF_SHOW_SASL_SERV) {
	pcf_show_sasl(PCF_SHOW_SASL_SERV);
    } else if (pcf_cmd_mode & PCF_SHOW_SASL_CLNT) {
	pcf_show_sasl(PCF_SHOW_SASL_CLNT);
    }

    /*
     * Edit main.cf or master.cf.
     */
    else if (pcf_cmd_mode & (PCF_EDIT_CONF | PCF_COMMENT_OUT | PCF_EDIT_EXCL)) {
	if (optind == argc)
	    msg_fatal("missing service argument");
	if (pcf_cmd_mode & (PCF_MASTER_ENTRY | PCF_MASTER_FLD | PCF_MASTER_PARAM)) {
	    pcf_edit_master(pcf_cmd_mode, argc - optind, argv + optind);
	} else {
	    pcf_edit_main(pcf_cmd_mode, argc - optind, argv + optind);
	}
    }

    /*
     * If showing non-default values, read main.cf.
     */
    else {
	if ((pcf_cmd_mode & PCF_SHOW_DEFS) == 0) {
	    pcf_read_parameters();
	    if (override_params)
		pcf_set_parameters(override_params->argv);
	}
	pcf_register_builtin_parameters(basename(argv[0]), getpid());

	/*
	 * Add service-dependent parameters (service names from master.cf)
	 * and user-defined parameters ($name macros in parameter values in
	 * main.cf and master.cf, but only if those names have a name=value
	 * in main.cf or master.cf).
	 */
	pcf_read_master(PCF_WARN_ON_OPEN_ERROR);
	pcf_register_service_parameters();
	if ((pcf_cmd_mode & PCF_SHOW_DEFS) == 0)
	    pcf_register_user_parameters();

	/*
	 * Show the requested values.
	 */
	pcf_show_parameters(VSTREAM_OUT, pcf_cmd_mode, param_class,
			    argv + optind);

	/*
	 * Flag unused parameters. This makes no sense with "postconf -d",
	 * because that ignores all the user-specified parameters and
	 * user-specified macro expansions in main.cf.
	 */
	if ((pcf_cmd_mode & PCF_SHOW_DEFS) == 0) {
	    pcf_flag_unused_main_parameters();
	    pcf_flag_unused_master_parameters();
	}
    }
    vstream_fflush(VSTREAM_OUT);
    exit(0);
}
コード例 #6
0
ファイル: postdrop.c プロジェクト: DabeDotCom/postfix
int     main(int argc, char **argv)
{
    struct stat st;
    int     fd;
    int     c;
    VSTRING *buf;
    int     status;
    MAIL_STREAM *dst;
    int     rec_type;
    static char *segment_info[] = {
	REC_TYPE_POST_ENVELOPE, REC_TYPE_POST_CONTENT, REC_TYPE_POST_EXTRACT, ""
    };
    char  **expected;
    uid_t   uid = getuid();
    ARGV   *import_env;
    const char *error_text;
    char   *attr_name;
    char   *attr_value;
    const char *errstr;
    char   *junk;
    struct timeval start;
    int     saved_errno;
    int     from_count = 0;
    int     rcpt_count = 0;
    int     validate_input = 1;

    /*
     * Fingerprint executables and core dumps.
     */
    MAIL_VERSION_STAMP_ALLOCATE;

    /*
     * Be consistent with file permissions.
     */
    umask(022);

    /*
     * To minimize confusion, make sure that the standard file descriptors
     * are open before opening anything else. XXX Work around for 44BSD where
     * fstat can return EBADF on an open file descriptor.
     */
    for (fd = 0; fd < 3; fd++)
	if (fstat(fd, &st) == -1
	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
	    msg_fatal("open /dev/null: %m");

    /*
     * Set up logging. Censor the process name: it is provided by the user.
     */
    argv[0] = "postdrop";
    msg_vstream_init(argv[0], VSTREAM_ERR);
    msg_syslog_init(mail_task("postdrop"), LOG_PID, LOG_FACILITY);
    set_mail_conf_str(VAR_PROCNAME, var_procname = mystrdup(argv[0]));

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

    /*
     * Parse JCL. This program is set-gid and must sanitize all command-line
     * arguments. The configuration directory argument is validated by the
     * mail configuration read routine. Don't do complex things until we have
     * completed initializations.
     */
    while ((c = GETOPT(argc, argv, "c:rv")) > 0) {
	switch (c) {
	case 'c':
	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
		msg_fatal("out of memory");
	    break;
	case 'r':				/* forward compatibility */
	    break;
	case 'v':
	    if (geteuid() == 0)
		msg_verbose++;
	    break;
	default:
	    msg_fatal("usage: %s [-c config_dir] [-v]", argv[0]);
	}
    }

    /*
     * Read the global configuration file and extract configuration
     * information. Some claim that the user should supply the working
     * directory instead. That might be OK, given that this command needs
     * write permission in a subdirectory called "maildrop". However we still
     * need to reliably detect incomplete input, and so we must perform
     * record-level I/O. With that, we should also take the opportunity to
     * perform some sanity checks on the input.
     */
    mail_conf_read();
    /* Re-evaluate mail_task() after reading main.cf. */
    msg_syslog_init(mail_task("postdrop"), LOG_PID, LOG_FACILITY);
    get_mail_conf_str_table(str_table);

    /*
     * Mail submission access control. Should this be in the user-land gate,
     * or in the daemon process?
     */
    mail_dict_init();
    if ((errstr = check_user_acl_byuid(VAR_SUBMIT_ACL, var_submit_acl,
				       uid)) != 0)
	msg_fatal("User %s(%ld) is not allowed to submit mail",
		  errstr, (long) uid);

    /*
     * Stop run-away process accidents by limiting the queue file size. This
     * is not a defense against DOS attack.
     */
    if (var_message_limit > 0 && get_file_limit() > var_message_limit)
	set_file_limit((off_t) var_message_limit);

    /*
     * This program is installed with setgid privileges. Strip the process
     * environment so that we don't have to trust the C library.
     */
    import_env = mail_parm_split(VAR_IMPORT_ENVIRON, var_import_environ);
    clean_env(import_env->argv);
    argv_free(import_env);

    if (chdir(var_queue_dir))
	msg_fatal("chdir %s: %m", var_queue_dir);
    if (msg_verbose)
	msg_info("chdir %s", var_queue_dir);

    /*
     * Set up signal handlers and a runtime error handler so that we can
     * clean up incomplete output.
     * 
     * postdrop_sig() uses the in-kernel SIGINT handler address as an atomic
     * variable to prevent nested postdrop_sig() calls. For this reason, the
     * SIGINT handler must be configured before other signal handlers are
     * allowed to invoke postdrop_sig().
     */
    signal(SIGPIPE, SIG_IGN);
    signal(SIGXFSZ, SIG_IGN);

    signal(SIGINT, postdrop_sig);
    signal(SIGQUIT, postdrop_sig);
    if (signal(SIGTERM, SIG_IGN) == SIG_DFL)
	signal(SIGTERM, postdrop_sig);
    if (signal(SIGHUP, SIG_IGN) == SIG_DFL)
	signal(SIGHUP, postdrop_sig);
    msg_cleanup(postdrop_cleanup);

    /* End of initializations. */

    /*
     * Don't trust the caller's time information.
     */
    GETTIMEOFDAY(&start);

    /*
     * Create queue file. mail_stream_file() never fails. Send the queue ID
     * to the caller. Stash away a copy of the queue file name so we can
     * clean up in case of a fatal error or an interrupt.
     */
    dst = mail_stream_file(MAIL_QUEUE_MAILDROP, MAIL_CLASS_PUBLIC,
			   var_pickup_service, 0444);
    attr_print(VSTREAM_OUT, ATTR_FLAG_NONE,
	       SEND_ATTR_STR(MAIL_ATTR_QUEUEID, dst->id),
	       ATTR_TYPE_END);
    vstream_fflush(VSTREAM_OUT);
    postdrop_path = mystrdup(VSTREAM_PATH(dst->stream));

    /*
     * Copy stdin to file. The format is checked so that we can recognize
     * incomplete input and cancel the operation. With the sanity checks
     * applied here, the pickup daemon could skip format checks and pass a
     * file descriptor to the cleanup daemon. These are by no means all
     * sanity checks - the cleanup service and queue manager services will
     * reject messages that lack required information.
     * 
     * If something goes wrong, slurp up the input before responding to the
     * client, otherwise the client will give up after detecting SIGPIPE.
     * 
     * Allow attribute records if the attribute specifies the MIME body type
     * (sendmail -B).
     */
    vstream_control(VSTREAM_IN, CA_VSTREAM_CTL_PATH("stdin"), CA_VSTREAM_CTL_END);
    buf = vstring_alloc(100);
    expected = segment_info;
    /* Override time information from the untrusted caller. */
    rec_fprintf(dst->stream, REC_TYPE_TIME, REC_TYPE_TIME_FORMAT,
		REC_TYPE_TIME_ARG(start));
    for (;;) {
	/* Don't allow PTR records. */
	rec_type = rec_get_raw(VSTREAM_IN, buf, var_line_limit, REC_FLAG_NONE);
	if (rec_type == REC_TYPE_EOF) {		/* request cancelled */
	    mail_stream_cleanup(dst);
	    if (remove(postdrop_path))
		msg_warn("uid=%ld: remove %s: %m", (long) uid, postdrop_path);
	    else if (msg_verbose)
		msg_info("remove %s", postdrop_path);
	    myfree(postdrop_path);
	    postdrop_path = 0;
	    exit(0);
	}
	if (rec_type == REC_TYPE_ERROR)
	    msg_fatal("uid=%ld: malformed input", (long) uid);
	if (strchr(*expected, rec_type) == 0)
	    msg_fatal("uid=%ld: unexpected record type: %d", (long) uid, rec_type);
	if (rec_type == **expected)
	    expected++;
	/* Override time information from the untrusted caller. */
	if (rec_type == REC_TYPE_TIME)
	    continue;
	/* Check these at submission time instead of pickup time. */
	if (rec_type == REC_TYPE_FROM)
	    from_count++;
	if (rec_type == REC_TYPE_RCPT)
	    rcpt_count++;
	/* Limit the attribute types that users may specify. */
	if (rec_type == REC_TYPE_ATTR) {
	    if ((error_text = split_nameval(vstring_str(buf), &attr_name,
					    &attr_value)) != 0) {
		msg_warn("uid=%ld: ignoring malformed record: %s: %.200s",
			 (long) uid, error_text, vstring_str(buf));
		continue;
	    }
#define STREQ(x,y) (strcmp(x,y) == 0)

	    if ((STREQ(attr_name, MAIL_ATTR_ENCODING)
		 && (STREQ(attr_value, MAIL_ATTR_ENC_7BIT)
		     || STREQ(attr_value, MAIL_ATTR_ENC_8BIT)
		     || STREQ(attr_value, MAIL_ATTR_ENC_NONE)))
		|| STREQ(attr_name, MAIL_ATTR_DSN_ENVID)
		|| STREQ(attr_name, MAIL_ATTR_DSN_NOTIFY)
		|| rec_attr_map(attr_name)
		|| (STREQ(attr_name, MAIL_ATTR_RWR_CONTEXT)
		    && (STREQ(attr_value, MAIL_ATTR_RWR_LOCAL)
			|| STREQ(attr_value, MAIL_ATTR_RWR_REMOTE)))
		|| STREQ(attr_name, MAIL_ATTR_TRACE_FLAGS)) {	/* XXX */
		rec_fprintf(dst->stream, REC_TYPE_ATTR, "%s=%s",
			    attr_name, attr_value);
	    } else {
		msg_warn("uid=%ld: ignoring attribute record: %.200s=%.200s",
			 (long) uid, attr_name, attr_value);
	    }
	    continue;
	}
	if (REC_PUT_BUF(dst->stream, rec_type, buf) < 0) {
	    /* rec_get() errors must not clobber errno. */
	    saved_errno = errno;
	    while ((rec_type = rec_get_raw(VSTREAM_IN, buf, var_line_limit,
					   REC_FLAG_NONE)) != REC_TYPE_END
		   && rec_type != REC_TYPE_EOF)
		if (rec_type == REC_TYPE_ERROR)
		    msg_fatal("uid=%ld: malformed input", (long) uid);
	    validate_input = 0;
	    errno = saved_errno;
	    break;
	}
	if (rec_type == REC_TYPE_END)
	    break;
    }
    vstring_free(buf);

    /*
     * As of Postfix 2.7 the pickup daemon discards mail without recipients.
     * Such mail may enter the maildrop queue when "postsuper -r" is invoked
     * before the queue manager deletes an already delivered message. Looking
     * at file ownership is not a good way to make decisions on what mail to
     * discard. Instead, the pickup server now requires that new submissions
     * always have at least one recipient record.
     * 
     * The Postfix sendmail command already rejects mail without recipients.
     * However, in the future postdrop may receive mail via other programs,
     * so we add a redundant recipient check here for future proofing.
     * 
     * The test for the sender address is just for consistency of error
     * reporting (report at submission time instead of pickup time). Besides
     * the segment terminator records, there aren't any other mandatory
     * records in a Postfix submission queue file.
     */
    if (validate_input && (from_count == 0 || rcpt_count == 0)) {
	status = CLEANUP_STAT_BAD;
	mail_stream_cleanup(dst);
    }

    /*
     * Finish the file.
     */
    else if ((status = mail_stream_finish(dst, (VSTRING *) 0)) != 0) {
	msg_warn("uid=%ld: %m", (long) uid);
	postdrop_cleanup();
    }

    /*
     * Disable deletion on fatal error before reporting success, so the file
     * will not be deleted after we have taken responsibility for delivery.
     */
    if (postdrop_path) {
	junk = postdrop_path;
	postdrop_path = 0;
	myfree(junk);
    }

    /*
     * Send the completion status to the caller and terminate.
     */
    attr_print(VSTREAM_OUT, ATTR_FLAG_NONE,
	       SEND_ATTR_INT(MAIL_ATTR_STATUS, status),
	       SEND_ATTR_STR(MAIL_ATTR_WHY, ""),
	       ATTR_TYPE_END);
    vstream_fflush(VSTREAM_OUT);
    exit(status);
}
コード例 #7
0
ファイル: trigger_server.c プロジェクト: TonyChengTW/Rmail
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();
}
コード例 #8
0
ファイル: postconf.c プロジェクト: ystk/debian-postfix
int     main(int argc, char **argv)
{
    int     ch;
    int     fd;
    struct stat st;
    int     junk;
    ARGV   *ext_argv = 0;

    /*
     * Fingerprint executables and core dumps.
     */
    MAIL_VERSION_STAMP_ALLOCATE;

    /*
     * Be consistent with file permissions.
     */
    umask(022);

    /*
     * To minimize confusion, make sure that the standard file descriptors
     * are open before opening anything else. XXX Work around for 44BSD where
     * fstat can return EBADF on an open file descriptor.
     */
    for (fd = 0; fd < 3; fd++)
	if (fstat(fd, &st) == -1
	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
	    msg_fatal("open /dev/null: %m");

    /*
     * Set up logging.
     */
    msg_vstream_init(argv[0], VSTREAM_ERR);

    /*
     * Parse JCL.
     */
    while ((ch = GETOPT(argc, argv, "aAbc:deE#hmlntv")) > 0) {
	switch (ch) {
	case 'a':
	    cmd_mode |= SHOW_SASL_SERV;
	    break;
	case 'A':
	    cmd_mode |= SHOW_SASL_CLNT;
	    break;
	case 'b':
	    if (ext_argv)
		msg_fatal("specify one of -b and -t");
	    ext_argv = argv_alloc(2);
	    argv_add(ext_argv, "bounce", "-SVnexpand_templates", (char *) 0);
	    break;
	case 'c':
	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
		msg_fatal("out of memory");
	    break;
	case 'd':
	    cmd_mode |= SHOW_DEFS;
	    break;
	case 'e':
	    cmd_mode |= EDIT_MAIN;
	    break;

	    /*
	     * People, this does not work unless you properly handle default
	     * settings. For example, fast_flush_domains = $relay_domains
	     * must not evaluate to the empty string when relay_domains is
	     * left at its default setting of $mydestination.
	     */
#if 0
	case 'E':
	    cmd_mode |= SHOW_EVAL;
	    break;
#endif
	case '#':
	    cmd_mode = COMMENT_OUT;
	    break;

	case 'h':
	    cmd_mode &= ~SHOW_NAME;
	    break;
	case 'l':
	    cmd_mode |= SHOW_LOCKS;
	    break;
	case 'm':
	    cmd_mode |= SHOW_MAPS;
	    break;
	case 'n':
	    cmd_mode |= SHOW_NONDEF;
	    break;
	case 't':
	    if (ext_argv)
		msg_fatal("specify one of -b and -t");
	    ext_argv = argv_alloc(2);
	    argv_add(ext_argv, "bounce", "-SVndump_templates", (char *) 0);
	    break;
	case 'v':
	    msg_verbose++;
	    break;
	default:
	    msg_fatal("usage: %s [-a (server SASL types)] [-A (client SASL types)] [-b (bounce templates)] [-c config_dir] [-d (defaults)] [-e (edit)] [-# (comment-out)] [-h (no names)] [-l (lock types)] [-m (map types)] [-n (non-defaults)] [-v] [name...]", argv[0]);
	}
    }

    /*
     * Sanity check.
     */
    junk = (cmd_mode & (SHOW_DEFS | SHOW_NONDEF | SHOW_MAPS | SHOW_LOCKS | EDIT_MAIN | SHOW_SASL_SERV | SHOW_SASL_CLNT | COMMENT_OUT));
    if (junk != 0 && ((junk != SHOW_DEFS && junk != SHOW_NONDEF
	     && junk != SHOW_MAPS && junk != SHOW_LOCKS && junk != EDIT_MAIN
		       && junk != SHOW_SASL_SERV && junk != SHOW_SASL_CLNT
		       && junk != COMMENT_OUT)
		      || ext_argv != 0))
	msg_fatal("specify one of -a, -A, -b, -d, -e, -#, -m, -l and -n");

    /*
     * Display bounce template information and exit.
     */
    if (ext_argv) {
	if (argv[optind]) {
	    if (argv[optind + 1])
		msg_fatal("options -b and -t require at most one template file");
	    argv_add(ext_argv, "-o",
		     concatenate(VAR_BOUNCE_TMPL, "=",
				 argv[optind], (char *) 0),
		     (char *) 0);
	}
	/* Grr... */
	argv_add(ext_argv, "-o",
		 concatenate(VAR_QUEUE_DIR, "=", ".", (char *) 0),
		 (char *) 0);
	mail_conf_read();
	mail_run_replace(var_daemon_dir, ext_argv->argv);
	/* NOTREACHED */
    }

    /*
     * If showing map types, show them and exit
     */
    if (cmd_mode & SHOW_MAPS) {
	mail_dict_init();
	show_maps();
    }

    /*
     * If showing locking methods, show them and exit
     */
    else if (cmd_mode & SHOW_LOCKS) {
	show_locks();
    }

    /*
     * If showing SASL plug-in types, show them and exit
     */
    else if (cmd_mode & SHOW_SASL_SERV) {
	show_sasl(SHOW_SASL_SERV);
    } else if (cmd_mode & SHOW_SASL_CLNT) {
	show_sasl(SHOW_SASL_CLNT);
    }

    /*
     * Edit main.cf.
     */
    else if (cmd_mode & (EDIT_MAIN | COMMENT_OUT)) {
	edit_parameters(cmd_mode, argc - optind, argv + optind);
    }

    /*
     * If showing non-default values, read main.cf.
     */
    else {
	if ((cmd_mode & SHOW_DEFS) == 0) {
	    read_parameters();
	    set_parameters();
	}

	/*
	 * Throw together all parameters and show the asked values.
	 */
	hash_parameters();
	show_parameters(cmd_mode, argv + optind);
    }
    vstream_fflush(VSTREAM_OUT);
    exit(0);
}