/**
* Main message (infinite) loop.
*/
void loop_loop(int8_t once)
{
do {
message_t lmsg;
if (g_message_buffer.rdpos == g_message_buffer.wrpos) {
/* no message in the buffer: Run NOP message */
lmsg.cmd = Cmd_Nop;
lmsg.arg1i = 0;
} else {
/* a message in the buffer: retrieve and process */
lmsg = g_message_buffer.msg_buf[g_message_buffer.rdpos];
g_message_buffer.rdpos = iwrap(g_message_buffer.rdpos + 1);
if (lmsg.cmd != Cmd_ClockTick) {
usart_sendstr_P(PSTR("[Msg:0x"));
usart_sendhexb(lmsg.cmd);
usart_sendstr_P(PSTR("]"));
}
}
int8_t used = 0;
used |= voice_process(&lmsg);
used |= vfs_process(&lmsg);
used |= sound_process(&lmsg);
used |= ir_process(&lmsg);
used |= debug_process(&lmsg);
used |= btn_process(&lmsg);
used |= clock_process(&lmsg);
if (!used && (lmsg.cmd != Cmd_Nop)) {
usart_sendstr_P(PSTR("[Msg not recognized!]\n"));
}
/* reset watchdog timer */
wdt_reset();
} while (!once);
}
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();
}
int main(int argc, char **argv)
{
static VSTREAM *lock_fp;
static VSTREAM *data_lock_fp;
VSTRING *lock_path;
VSTRING *data_lock_path;
off_t inherited_limit;
int debug_me = 0;
int ch;
int fd;
int n;
int test_lock = 0;
VSTRING *why;
WATCHDOG *watchdog;
ARGV *import_env;
/*
* Fingerprint executables and core dumps.
*/
MAIL_VERSION_STAMP_ALLOCATE;
/*
* Initialize.
*/
umask(077); /* never fails! */
/*
* 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);
/*
* Strip and save the process name for diagnostics etc.
*/
var_procname = mystrdup(basename(argv[0]));
/*
* When running a child process, don't leak any open files that were
* leaked to us by our own (privileged) parent process. Descriptors 0-2
* are taken care of after we have initialized error logging.
*
* Some systems such as AIX have a huge per-process open file limit. In
* those cases, limit the search for potential file descriptor leaks to
* just the first couple hundred.
*
* The Debian post-installation script passes an open file descriptor into
* the master process and waits forever for someone to close it. Because
* of this we have to close descriptors > 2, and pray that doing so does
* not break things.
*/
closefrom(3);
/*
* Initialize logging and exit handler.
*/
msg_syslog_init(mail_task(var_procname), LOG_PID, LOG_FACILITY);
/*
* Check the Postfix library version as soon as we enable logging.
*/
MAIL_VERSION_CHECK;
/*
* The mail system must be run by the superuser so it can revoke
* privileges for selected operations. That's right - it takes privileges
* to toss privileges.
*/
if (getuid() != 0)
msg_fatal("the master command is reserved for the superuser");
if (unsafe() != 0)
msg_fatal("the master command must not run as a set-uid process");
/*
* Process JCL.
*/
while ((ch = GETOPT(argc, argv, "c:Dde:tv")) > 0) {
switch (ch) {
case 'c':
if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
msg_fatal("out of memory");
break;
case 'd':
master_detach = 0;
break;
case 'e':
event_request_timer(master_exit_event, (char *) 0, atoi(optarg));
break;
case 'D':
debug_me = 1;
break;
case 't':
test_lock = 1;
break;
case 'v':
msg_verbose++;
break;
default:
usage(argv[0]);
/* NOTREACHED */
}
}
/*
* This program takes no other arguments.
*/
if (argc > optind)
usage(argv[0]);
/*
* If started from a terminal, get rid of any tty association. This also
* means that all errors and warnings must go to the syslog daemon.
*/
if (master_detach)
for (fd = 0; fd < 3; fd++) {
(void) close(fd);
if (open("/dev/null", O_RDWR, 0) != fd)
msg_fatal("open /dev/null: %m");
}
/*
* Run in a separate process group, so that "postfix stop" can terminate
* all MTA processes cleanly. Give up if we can't separate from our
* parent process. We're not supposed to blow away the parent.
*/
if (debug_me == 0 && master_detach != 0 && setsid() == -1 && getsid(0) != getpid())
msg_fatal("unable to set session and process group ID: %m");
/*
* Make some room for plumbing with file descriptors. XXX This breaks
* when a service listens on many ports. In order to do this right we
* must change the master-child interface so that descriptors do not need
* to have fixed numbers.
*
* In a child we need two descriptors for the flow control pipe, one for
* child->master status updates and at least one for listening.
*/
for (n = 0; n < 5; n++) {
if (close_on_exec(dup(0), CLOSE_ON_EXEC) < 0)
msg_fatal("dup(0): %m");
}
/*
* Final initializations. Unfortunately, we must read the global Postfix
* configuration file after doing command-line processing, so that we get
* consistent results when we SIGHUP the server to reload configuration
* files.
*/
master_vars_init();
/*
* In case of multi-protocol support. This needs to be done because
* master does not invoke mail_params_init() (it was written before that
* code existed).
*/
(void) inet_proto_init(VAR_INET_PROTOCOLS, var_inet_protocols);
/*
* Environment import filter, to enforce consistent behavior whether
* Postfix is started by hand, or at system boot time.
*/
import_env = argv_split(var_import_environ, ", \t\r\n");
clean_env(import_env->argv);
argv_free(import_env);
if ((inherited_limit = get_file_limit()) < 0)
set_file_limit(OFF_T_MAX);
if (chdir(var_queue_dir))
msg_fatal("chdir %s: %m", var_queue_dir);
/*
* Lock down the master.pid file. In test mode, no file means that it
* isn't locked.
*/
lock_path = vstring_alloc(10);
data_lock_path = vstring_alloc(10);
why = vstring_alloc(10);
vstring_sprintf(lock_path, "%s/%s.pid", DEF_PID_DIR, var_procname);
if (test_lock && access(vstring_str(lock_path), F_OK) < 0)
exit(0);
lock_fp = open_lock(vstring_str(lock_path), O_RDWR | O_CREAT, 0644, why);
if (test_lock)
exit(lock_fp ? 0 : 1);
if (lock_fp == 0)
msg_fatal("open lock file %s: %s",
vstring_str(lock_path), vstring_str(why));
vstream_fprintf(lock_fp, "%*lu\n", (int) sizeof(unsigned long) * 4,
(unsigned long) var_pid);
if (vstream_fflush(lock_fp))
msg_fatal("cannot update lock file %s: %m", vstring_str(lock_path));
close_on_exec(vstream_fileno(lock_fp), CLOSE_ON_EXEC);
/*
* Lock down the Postfix-writable data directory.
*/
vstring_sprintf(data_lock_path, "%s/%s.lock", var_data_dir, var_procname);
set_eugid(var_owner_uid, var_owner_gid);
data_lock_fp =
open_lock(vstring_str(data_lock_path), O_RDWR | O_CREAT, 0644, why);
set_ugid(getuid(), getgid());
if (data_lock_fp == 0)
msg_fatal("open lock file %s: %s",
vstring_str(data_lock_path), vstring_str(why));
vstream_fprintf(data_lock_fp, "%*lu\n", (int) sizeof(unsigned long) * 4,
(unsigned long) var_pid);
if (vstream_fflush(data_lock_fp))
msg_fatal("cannot update lock file %s: %m", vstring_str(data_lock_path));
close_on_exec(vstream_fileno(data_lock_fp), CLOSE_ON_EXEC);
/*
* Clean up.
*/
vstring_free(why);
vstring_free(lock_path);
vstring_free(data_lock_path);
/*
* Optionally start the debugger on ourself.
*/
if (debug_me)
debug_process();
/*
* Finish initialization, last part. We must process configuration files
* after processing command-line parameters, so that we get consistent
* results when we SIGHUP the server to reload configuration files.
*/
master_config();
master_sigsetup();
master_flow_init();
msg_info("daemon started -- version %s, configuration %s",
var_mail_version, var_config_dir);
/*
* Process events. The event handler will execute the read/write/timer
* action routines. Whenever something has happened, see if we received
* any signal in the mean time. Although the master process appears to do
* multiple things at the same time, it really is all a single thread, so
* that there are no concurrency conflicts within the master process.
*/
#define MASTER_WATCHDOG_TIME 1000
watchdog = watchdog_create(MASTER_WATCHDOG_TIME, (WATCHDOG_FN) 0, (char *) 0);
for (;;) {
#ifdef HAS_VOLATILE_LOCKS
if (myflock(vstream_fileno(lock_fp), INTERNAL_LOCK,
MYFLOCK_OP_EXCLUSIVE) < 0)
msg_fatal("refresh exclusive lock: %m");
if (myflock(vstream_fileno(data_lock_fp), INTERNAL_LOCK,
MYFLOCK_OP_EXCLUSIVE) < 0)
msg_fatal("refresh exclusive lock: %m");
#endif
watchdog_start(watchdog); /* same as trigger servers */
event_loop(MASTER_WATCHDOG_TIME / 2);
if (master_gotsighup) {
msg_info("reload -- version %s, configuration %s",
var_mail_version, var_config_dir);
master_gotsighup = 0; /* this first */
master_vars_init(); /* then this */
master_refresh(); /* then this */
}
if (master_gotsigchld) {
if (msg_verbose)
msg_info("got sigchld");
master_gotsigchld = 0; /* this first */
master_reap_child(); /* then this */
}
}
}
int main(int argc, char **argv)
{
static char *full_name = 0; /* sendmail -F */
struct stat st;
char *slash;
char *sender = 0; /* sendmail -f */
int c;
int fd;
int mode;
ARGV *ext_argv;
int debug_me = 0;
int err;
int n;
int flags = SM_FLAG_DEFAULT;
char *site_to_flush = 0;
char *id_to_flush = 0;
char *encoding = 0;
char *qtime = 0;
const char *errstr;
uid_t uid;
const char *rewrite_context = MAIL_ATTR_RWR_LOCAL;
int dsn_notify = 0;
int dsn_ret = 0;
const char *dsn_envid = 0;
int saved_optind;
/*
* 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_OSERR, "open /dev/null: %m");
/*
* The CDE desktop calendar manager leaks a parent file descriptor into
* the child process. For the sake of sendmail compatibility we have to
* close the file descriptor otherwise mail notification will hang.
*/
for ( /* void */ ; fd < 100; fd++)
(void) close(fd);
/*
* Process environment options as early as we can. We might be called
* from a set-uid (set-gid) program, so be careful with importing
* environment variables.
*/
if (safe_getenv(CONF_ENV_VERB))
msg_verbose = 1;
if (safe_getenv(CONF_ENV_DEBUG))
debug_me = 1;
/*
* 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(tempfail);
msg_syslog_init(mail_task("sendmail"), 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;
/*
* Some sites mistakenly install Postfix sendmail as set-uid root. Drop
* set-uid privileges only when root, otherwise some systems will not
* reset the saved set-userid, which would be a security vulnerability.
*/
if (geteuid() == 0 && getuid() != 0) {
msg_warn("the Postfix sendmail command has set-uid root file permissions");
msg_warn("or the command is run from a set-uid root process");
msg_warn("the Postfix sendmail command must be installed without set-uid root file permissions");
set_ugid(getuid(), getgid());
}
/*
* Further initialization. Load main.cf first, so that command-line
* options can override main.cf settings. Pre-scan the argument list so
* that we load the right main.cf file.
*/
#define GETOPT_LIST "A:B:C:F:GIL:N:O:R:UV:X:b:ce:f:h:imno:p:r:q:tvx"
saved_optind = optind;
while (argv[OPTIND] != 0) {
if (strcmp(argv[OPTIND], "-q") == 0) { /* not getopt compatible */
optind++;
continue;
}
if ((c = GETOPT(argc, argv, GETOPT_LIST)) <= 0)
break;
if (c == 'C') {
VSTRING *buf = vstring_alloc(1);
if (setenv(CONF_ENV_PATH,
strcmp(sane_basename(buf, optarg), MAIN_CONF_FILE) == 0 ?
sane_dirname(buf, optarg) : optarg, 1) < 0)
msg_fatal_status(EX_UNAVAILABLE, "out of memory");
vstring_free(buf);
}
}
optind = saved_optind;
mail_conf_read();
/* Re-evaluate mail_task() after reading main.cf. */
msg_syslog_init(mail_task("sendmail"), LOG_PID, LOG_FACILITY);
get_mail_conf_str_table(str_table);
if (chdir(var_queue_dir))
msg_fatal_status(EX_UNAVAILABLE, "chdir %s: %m", var_queue_dir);
signal(SIGPIPE, SIG_IGN);
/*
* Optionally start the debugger on ourself. This must be done after
* reading the global configuration file, because that file specifies
* what debugger command to execute.
*/
if (debug_me)
debug_process();
/*
* The default mode of operation is determined by the process name. It
* can, however, be changed via command-line options (for example,
* "newaliases -bp" will show the mail queue).
*/
if (strcmp(argv[0], "mailq") == 0) {
mode = SM_MODE_MAILQ;
} else if (strcmp(argv[0], "newaliases") == 0) {
mode = SM_MODE_NEWALIAS;
} else if (strcmp(argv[0], "smtpd") == 0) {
mode = SM_MODE_DAEMON;
} else {
mode = SM_MODE_ENQUEUE;
}
/*
* Parse JCL. Sendmail has been around for a long time, and has acquired
* a large number of options in the course of time. Some options such as
* -q are not parsable with GETOPT() and get special treatment.
*/
#define OPTIND (optind > 0 ? optind : 1)
while (argv[OPTIND] != 0) {
if (strcmp(argv[OPTIND], "-q") == 0) {
if (mode == SM_MODE_DAEMON)
msg_warn("ignoring -q option in daemon mode");
else
mode = SM_MODE_FLUSHQ;
optind++;
continue;
}
if (strcmp(argv[OPTIND], "-V") == 0
&& argv[OPTIND + 1] != 0 && strlen(argv[OPTIND + 1]) == 2) {
msg_warn("option -V is deprecated with Postfix 2.3; "
"specify -XV instead");
argv[OPTIND] = "-XV";
}
if (strncmp(argv[OPTIND], "-V", 2) == 0 && strlen(argv[OPTIND]) == 4) {
msg_warn("option %s is deprecated with Postfix 2.3; "
"specify -X%s instead",
argv[OPTIND], argv[OPTIND] + 1);
argv[OPTIND] = concatenate("-X", argv[OPTIND] + 1, (char *) 0);
}
if (strcmp(argv[OPTIND], "-XV") == 0) {
verp_delims = var_verp_delims;
optind++;
continue;
}
if ((c = GETOPT(argc, argv, GETOPT_LIST)) <= 0)
break;
switch (c) {
default:
if (msg_verbose)
msg_info("-%c option ignored", c);
break;
case 'n':
msg_fatal_status(EX_USAGE, "-%c option not supported", c);
case 'B':
if (strcmp(optarg, "8BITMIME") == 0)/* RFC 1652 */
encoding = MAIL_ATTR_ENC_8BIT;
else if (strcmp(optarg, "7BIT") == 0) /* RFC 1652 */
encoding = MAIL_ATTR_ENC_7BIT;
else
msg_fatal_status(EX_USAGE, "-B option needs 8BITMIME or 7BIT");
break;
case 'F': /* full name */
full_name = optarg;
break;
case 'G': /* gateway submission */
rewrite_context = MAIL_ATTR_RWR_REMOTE;
break;
case 'I': /* newaliases */
mode = SM_MODE_NEWALIAS;
break;
case 'N':
if ((dsn_notify = dsn_notify_mask(optarg)) == 0)
msg_warn("bad -N option value -- ignored");
break;
case 'R':
if ((dsn_ret = dsn_ret_code(optarg)) == 0)
msg_warn("bad -R option value -- ignored");
break;
case 'V': /* DSN, was: VERP */
if (strlen(optarg) > 100)
msg_warn("too long -V option value -- ignored");
else if (!allprint(optarg))
msg_warn("bad syntax in -V option value -- ignored");
else
dsn_envid = optarg;
break;
case 'X':
switch (*optarg) {
default:
msg_fatal_status(EX_USAGE, "unsupported: -%c%c", c, *optarg);
case 'V': /* VERP */
if (verp_delims_verify(optarg + 1) != 0)
msg_fatal_status(EX_USAGE, "-V requires two characters from %s",
var_verp_filter);
verp_delims = optarg + 1;
break;
}
break;
case 'b':
switch (*optarg) {
default:
msg_fatal_status(EX_USAGE, "unsupported: -%c%c", c, *optarg);
case 'd': /* daemon mode */
case 'l': /* daemon mode */
if (mode == SM_MODE_FLUSHQ)
msg_warn("ignoring -q option in daemon mode");
mode = SM_MODE_DAEMON;
break;
case 'h': /* print host status */
case 'H': /* flush host status */
mode = SM_MODE_IGNORE;
break;
case 'i': /* newaliases */
mode = SM_MODE_NEWALIAS;
break;
case 'm': /* deliver mail */
mode = SM_MODE_ENQUEUE;
break;
case 'p': /* mailq */
mode = SM_MODE_MAILQ;
break;
case 's': /* stand-alone mode */
mode = SM_MODE_USER;
break;
case 'v': /* expand recipients */
flags |= DEL_REQ_FLAG_USR_VRFY;
break;
}
break;
case 'f':
sender = optarg;
break;
case 'i':
flags &= ~SM_FLAG_AEOF;
break;
case 'o':
switch (*optarg) {
default:
if (msg_verbose)
msg_info("-%c%c option ignored", c, *optarg);
break;
case 'A':
if (optarg[1] == 0)
msg_fatal_status(EX_USAGE, "-oA requires pathname");
myfree(var_alias_db_map);
var_alias_db_map = mystrdup(optarg + 1);
set_mail_conf_str(VAR_ALIAS_DB_MAP, var_alias_db_map);
break;
case '7':
case '8':
break;
case 'i':
flags &= ~SM_FLAG_AEOF;
break;
case 'm':
break;
}
break;
case 'r': /* obsoleted by -f */
sender = optarg;
break;
case 'q':
if (ISDIGIT(optarg[0])) {
qtime = optarg;
} else if (optarg[0] == 'R') {
site_to_flush = optarg + 1;
if (*site_to_flush == 0)
msg_fatal_status(EX_USAGE, "specify: -qRsitename");
} else if (optarg[0] == 'I') {
id_to_flush = optarg + 1;
if (*id_to_flush == 0)
msg_fatal_status(EX_USAGE, "specify: -qIqueueid");
} else {
msg_fatal_status(EX_USAGE, "-q%c is not implemented",
optarg[0]);
}
break;
case 't':
flags |= SM_FLAG_XRCPT;
break;
case 'v':
msg_verbose++;
break;
case '?':
msg_fatal_status(EX_USAGE, "usage: %s [options]", argv[0]);
}
}
/*
* Look for conflicting options and arguments.
*/
if ((flags & SM_FLAG_XRCPT) && mode != SM_MODE_ENQUEUE)
msg_fatal_status(EX_USAGE, "-t can be used only in delivery mode");
if (site_to_flush && mode != SM_MODE_ENQUEUE)
msg_fatal_status(EX_USAGE, "-qR can be used only in delivery mode");
if (id_to_flush && mode != SM_MODE_ENQUEUE)
msg_fatal_status(EX_USAGE, "-qI can be used only in delivery mode");
if (flags & DEL_REQ_FLAG_USR_VRFY) {
if (flags & SM_FLAG_XRCPT)
msg_fatal_status(EX_USAGE, "-t option cannot be used with -bv");
if (dsn_notify)
msg_fatal_status(EX_USAGE, "-N option cannot be used with -bv");
if (dsn_ret)
msg_fatal_status(EX_USAGE, "-R option cannot be used with -bv");
if (msg_verbose == 1)
msg_fatal_status(EX_USAGE, "-v option cannot be used with -bv");
}
/*
* The -v option plays double duty. One requests verbose delivery, more
* than one requests verbose logging.
*/
if (msg_verbose == 1 && mode == SM_MODE_ENQUEUE) {
msg_verbose = 0;
flags |= DEL_REQ_FLAG_RECORD;
}
/*
* Start processing. Everything is delegated to external commands.
*/
if (qtime && mode != SM_MODE_DAEMON)
exit(0);
switch (mode) {
default:
msg_panic("unknown operation mode: %d", mode);
/* NOTREACHED */
case SM_MODE_ENQUEUE:
if (site_to_flush) {
if (argv[OPTIND])
msg_fatal_status(EX_USAGE, "flush site requires no recipient");
ext_argv = argv_alloc(2);
argv_add(ext_argv, "postqueue", "-s", site_to_flush, (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_terminate(ext_argv);
mail_run_replace(var_command_dir, ext_argv->argv);
/* NOTREACHED */
} else if (id_to_flush) {
if (argv[OPTIND])
msg_fatal_status(EX_USAGE, "flush queue_id requires no recipient");
ext_argv = argv_alloc(2);
argv_add(ext_argv, "postqueue", "-i", id_to_flush, (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_terminate(ext_argv);
mail_run_replace(var_command_dir, ext_argv->argv);
/* NOTREACHED */
} else {
enqueue(flags, encoding, dsn_envid, dsn_ret, dsn_notify,
rewrite_context, sender, full_name, argv + OPTIND);
exit(0);
/* NOTREACHED */
}
break;
case SM_MODE_MAILQ:
if (argv[OPTIND])
msg_fatal_status(EX_USAGE,
"display queue mode requires no recipient");
ext_argv = argv_alloc(2);
argv_add(ext_argv, "postqueue", "-p", (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_terminate(ext_argv);
mail_run_replace(var_command_dir, ext_argv->argv);
/* NOTREACHED */
case SM_MODE_FLUSHQ:
if (argv[OPTIND])
msg_fatal_status(EX_USAGE,
"flush queue mode requires no recipient");
ext_argv = argv_alloc(2);
argv_add(ext_argv, "postqueue", "-f", (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_terminate(ext_argv);
mail_run_replace(var_command_dir, ext_argv->argv);
/* NOTREACHED */
case SM_MODE_DAEMON:
if (argv[OPTIND])
msg_fatal_status(EX_USAGE, "daemon mode requires no recipient");
ext_argv = argv_alloc(2);
argv_add(ext_argv, "postfix", (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_add(ext_argv, "start", (char *) 0);
argv_terminate(ext_argv);
err = (mail_run_background(var_command_dir, ext_argv->argv) < 0);
argv_free(ext_argv);
exit(err);
break;
case SM_MODE_NEWALIAS:
if (argv[OPTIND])
msg_fatal_status(EX_USAGE,
"alias initialization mode requires no recipient");
if (*var_alias_db_map == 0)
return (0);
ext_argv = argv_alloc(2);
argv_add(ext_argv, "postalias", (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_split_append(ext_argv, var_alias_db_map, CHARS_COMMA_SP);
argv_terminate(ext_argv);
mail_run_replace(var_command_dir, ext_argv->argv);
/* NOTREACHED */
case SM_MODE_USER:
if (argv[OPTIND])
msg_fatal_status(EX_USAGE,
"stand-alone mode requires no recipient");
/* The actual enforcement happens in the postdrop command. */
if ((errstr = check_user_acl_byuid(VAR_SUBMIT_ACL, var_submit_acl,
uid = getuid())) != 0)
msg_fatal_status(EX_NOPERM,
"User %s(%ld) is not allowed to submit mail",
errstr, (long) uid);
ext_argv = argv_alloc(2);
argv_add(ext_argv, "smtpd", "-S", (char *) 0);
for (n = 0; n < msg_verbose; n++)
argv_add(ext_argv, "-v", (char *) 0);
argv_terminate(ext_argv);
mail_run_replace(var_daemon_dir, ext_argv->argv);
/* NOTREACHED */
case SM_MODE_IGNORE:
exit(0);
/* NOTREACHED */
}
}
int main(void){
uint16_t curMotorL = 0x00;
uint16_t curMotorR = 0x00;
uint8_t speedMotorL = 0x00;
uint8_t speedMotorR = 0x00;
// initiate system
sys_init();
// main loop
while(1){
// suspend system
sys_sleep();
// check for changed motor values
if( ctrl_flag_motorL ){
motor_set_speed(
MOTOR_ADDR_L,
control_getMotorSpeed(MOTOR_ADDR_L),
control_getMotorCommand(MOTOR_ADDR_L));
}
if( ctrl_flag_motorR ){
motor_set_speed(
MOTOR_ADDR_R,
control_getMotorSpeed(MOTOR_ADDR_R),
control_getMotorCommand(MOTOR_ADDR_R));
}
// check for changed robot id
if( ctrl_flag_id ){
sys_ee_set_robotID( control_getRobotID() );
#ifdef CFG_EXTERNAL_MARKER
marker_set_id(sys_robotID);
#endif
}
// read motor currents and speeds
#if !defined(CFG_CODE_LEVEL_MIN)
curMotorL = monitor_read_current(MONITOR_ADDR_1, MONITOR_I1);
curMotorR = monitor_read_current(MONITOR_ADDR_1, MONITOR_I2);
#endif
speedMotorL = control_getMotorSpeed(MOTOR_ADDR_L);
speedMotorR = control_getMotorSpeed(MOTOR_ADDR_R);
// adjust motor speed
// tries to decrease speed of faster motor,
// or if that fails because motor is already speed minimum
// increases the speed of the slower motor.
// if( curMotorL > curMotorR ){
//
// if( speedMotorL > MOTOR_SPEED_MIN ){
// motor_decrease_speed(MOTOR_ADDR_L, 1);
// } else if( speedMotorR < MOTOR_SPEED_MAX ){
// motor_increase_speed(MOTOR_ADDR_R, 1);
// }
//
// } else if( curMotorR > curMotorL ){
//
// if( speedMotorR > MOTOR_SPEED_MIN ){
// motor_decrease_speed(MOTOR_ADDR_R, 1);
// } else if( speedMotorL < MOTOR_SPEED_MAX ){
// motor_increase_speed(MOTOR_ADDR_L, 1);
// }
//
// }
#ifndef CFG_CODE_LEVEL_MIN
// process debugging module
debug_process();
#endif
}
}
static void
kerext_debug_process(void *args) {
PROCESS *prp;
THREAD *thp, *act = actives[KERNCPU];
DEBUG *dep;
struct kerargs_debug_process *kap = args;
int status;
int stopped;
int tid;
if(!(prp = lookup_pid(kap->pid))) {
kererr(act, ESRCH);
return;
}
dep = prp->debugger;
if(kap->request == NTO_DEBUG_PROCESS_INFO || (prp->flags & _NTO_PF_TERMING)) {
tid = 0;
} else if(dep && kap->tid == 0) {
tid = dep->tid + 1;
} else {
tid = kap->tid;
}
thp = 0;
if(tid > 0 && !(thp = vector_search(&prp->threads, tid - 1,
(kap->request == NTO_DEBUG_THREAD_INFO ||
kap->request == NTO_DEBUG_STOP) ? (unsigned *)&tid : 0))) {
kererr(act, ESRCH);
return;
}
stopped = 0;
if(thp && ((thp->flags & _NTO_TF_TO_BE_STOPPED) ||
(thp->state != STATE_RUNNING && thp->state != STATE_READY))) {
stopped = 1;
}
status = EINVAL;
switch(kap->request) {
case NTO_DEBUG_PROCESS_INFO: // pid:na:debug_process_t
status = debug_process(prp, &kap->data->process);
break;
case NTO_DEBUG_THREAD_INFO: // pid:tid:debug_thread_t
status = debug_thread(prp, thp, &kap->data->thread);
break;
case NTO_DEBUG_GET_GREG: // pid:tid:debug_greg_t
if(thp) {
memcpy(&kap->data->greg, &thp->reg, sizeof thp->reg);
status = EOK;
}
break;
case NTO_DEBUG_SET_GREG: // pid:tid:debug_greg_t
if(stopped) {
lock_kernel();
cpu_greg_load(thp, (CPU_REGISTERS *)&kap->data->greg);
status = EOK;
}
break;
case NTO_DEBUG_GET_FPREG: // pid:tid:debug_fpreg_t
if(thp) {
FPU_REGISTERS *fpudata = FPUDATA_PTR(thp->fpudata);
int cpu = FPUDATA_CPU(thp->fpudata);
status = ENXIO;
if(fpudata) {
if(FPUDATA_INUSE(thp->fpudata) && cpu != KERNCPU) {
// In use on another CPU; send ipi, restart kernel call
SENDIPI(cpu, IPI_CONTEXT_SAVE);
KERCALL_RESTART(act);
return;
}
if(actives_fpu[thp->runcpu] == thp) {
if(KERNCPU == thp->runcpu) {
cpu_force_fpu_save(thp);
actives_fpu[KERNCPU] = NULL;
} else {
// We should not get here
crash();
}
}
memcpy(&kap->data->fpreg, fpudata, sizeof *fpudata);
status = EOK;
} else if(thp->un.lcl.tls && thp->un.lcl.tls->__fpuemu_data) {
// @@@ NEED TO FIND PROPER SIZE OF EMULATOR DATA
memcpy(&kap->data->fpreg, thp->un.lcl.tls->__fpuemu_data, sizeof(*fpudata) + 256);
status = EOK;
}
}
break;
case NTO_DEBUG_SET_FPREG: // pid:tid:debug_fpreg_t
if(thp && stopped) {
FPU_REGISTERS *fpudata = FPUDATA_PTR(thp->fpudata);
int cpu = FPUDATA_CPU(thp->fpudata);
status = ENXIO;
if(thp->fpudata) {
if(FPUDATA_INUSE(thp->fpudata) && cpu != KERNCPU) {
// In use on another CPU; send ipi, restart kernel call
SENDIPI(cpu, IPI_CONTEXT_SAVE);
KERCALL_RESTART(act);
return;
}
if(actives_fpu[thp->runcpu] == thp) {
if(KERNCPU == thp->runcpu) {
cpu_force_fpu_save(thp);
actives_fpu[KERNCPU] = NULL;
} else {
// We should not get here
crash();
}
}
memcpy(fpudata, &kap->data->fpreg, sizeof *fpudata);
status = EOK;
} else if(thp->un.lcl.tls && thp->un.lcl.tls->__fpuemu_data) {
// @@@ NEED TO FIND PROPER SIZE OF EMULATOR DATA
memcpy(thp->un.lcl.tls->__fpuemu_data, &kap->data->fpreg, sizeof(*fpudata) + 256);
status = EOK;
}
}
break;
case NTO_DEBUG_STOP: // pid:na:na
if(dep) {
status = debug_stop(prp);
}
break;
case NTO_DEBUG_RUN: // pid:tid:debug_run_t
if(dep && stopped) {
status = debug_run(prp, &kap->data->run);
}
break;
case NTO_DEBUG_CURTHREAD: // pid:tid:NULL
if(dep) {
lock_kernel();
SETKSTATUS(act, dep->tid + 1);
if(thp) {
dep->tid = thp->tid;
}
return;
}
break;
case NTO_DEBUG_FREEZE: // pid:tid:NULL
if(thp == NULL){
status = EINVAL;
break;
}
if(stopped) {
lock_kernel();
thp->flags |= _NTO_TF_FROZEN;
}
break;
case NTO_DEBUG_THAW: // pid:tid:NULL
if(thp == NULL){
status = EINVAL;
break;
}
if(stopped) {
lock_kernel();
thp->flags &= ~_NTO_TF_FROZEN;
}
break;
case NTO_DEBUG_BREAK: // pid:na:debug_break_t
if(dep && stopped) {
status = debug_break(prp, &kap->data->brk);
}
break;
case NTO_DEBUG_GET_BREAKLIST: // pid:na:debug_breaklist_t
status = debug_break_list(prp, &kap->data->brklist);
break;
case NTO_DEBUG_SET_FLAG: // pid:na:uint32_t
if(dep && !(kap->data->flags & ~_DEBUG_FLAG_MASK)) {
lock_kernel();
dep->flags |= kap->data->flags;
}
break;
case NTO_DEBUG_CLEAR_FLAG: // pid:na:uint32_t
if(dep && !(kap->data->flags & ~_DEBUG_FLAG_MASK)) {
lock_kernel();
dep->flags &= ~kap->data->flags;
}
break;
case NTO_DEBUG_GET_ALTREG: // pid:tid:debug_altreg_t
if(thp) {
status = cpu_debug_get_altregs(thp, &kap->data->altreg);
}
break;
case NTO_DEBUG_SET_ALTREG: // pid:tid:debug_altreg_t
if(thp) {
status = cpu_debug_set_altregs(thp, &kap->data->altreg);
}
break;
case NTO_DEBUG_GET_PERFREG:
if ( thp ) {
status = cpu_debug_get_perfregs(thp, &kap->data->perfreg);
}
break;
case NTO_DEBUG_SET_PERFREG:
if ( thp && !stopped )
status = EINVAL;
else {
if ( (kap->data->flags & ~PERFREGS_ENABLED_FLAG) == cpu_perfreg_id() ) {
status = cpu_debug_set_perfregs(thp, &kap->data->perfreg);
}
else
status = ENODEV;
}
break;
}
if(status != EOK) {
kererr(act, status);
} else {
lock_kernel();
SETKSTATUS(act, 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();
}
