* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
*/
+/** @file
+ * @brief Entry point and other initialization functions for the daemon.
+ * @version $Id$
+ */
+#include "config.h"
+
#include "ircd.h"
#include "IPcheck.h"
#include "class.h"
#include "client.h"
#include "crule.h"
+#include "destruct_event.h"
#include "hash.h"
#include "ircd_alloc.h"
+#include "ircd_events.h"
+#include "ircd_features.h"
#include "ircd_log.h"
#include "ircd_reply.h"
#include "ircd_signal.h"
#include "ircd_string.h"
+#include "ircd_crypt.h"
#include "jupe.h"
#include "list.h"
#include "match.h"
#include "msg.h"
#include "numeric.h"
#include "numnicks.h"
+#include "opercmds.h"
#include "parse.h"
#include "res.h"
#include "s_auth.h"
#include "s_conf.h"
#include "s_debug.h"
#include "s_misc.h"
+#include "s_stats.h"
#include "send.h"
#include "sys.h"
#include "uping.h"
#include "version.h"
#include "whowas.h"
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/time.h>
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
#include <sys/socket.h>
#include <sys/stat.h>
+#include <sys/types.h>
#include <unistd.h>
* External stuff
*--------------------------------------------------------------------------*/
extern void init_counters(void);
+extern void mem_dbg_initialise(void);
/*----------------------------------------------------------------------------
* Constants / Enums
*--------------------------------------------------------------------------*/
enum {
- BOOT_DEBUG = 1,
- BOOT_TTY = 2
+ BOOT_DEBUG = 1, /**< Enable debug output. */
+ BOOT_TTY = 2, /**< Stay connected to TTY. */
+ BOOT_CHKCONF = 4 /**< Exit after reading configuration file. */
};
/*----------------------------------------------------------------------------
* Global data (YUCK!)
*--------------------------------------------------------------------------*/
-struct Client me; // That's me
-struct Client *GlobalClientList = &me; // Pointer to beginning of Client list
-time_t TSoffset = 0; // Offset of timestamps to system clock
-int GlobalRehashFlag = 0; // do a rehash if set
-int GlobalRestartFlag = 0; // do a restart if set
-time_t CurrentTime; // Updated every time we leave select()
+struct Client me; /**< That's me */
+struct Connection me_con; /**< That's me too */
+struct Client *GlobalClientList = &me; /**< Pointer to beginning of
+ Client list */
+time_t TSoffset = 0; /**< Offset of timestamps to system clock */
+int GlobalRehashFlag = 0; /**< do a rehash if set */
+int GlobalRestartFlag = 0; /**< do a restart if set */
+time_t CurrentTime; /**< Updated every time we leave select() */
-char *configfile = CPATH; // Server configuration file
-int debuglevel = -1; // Server debug level
-char *debugmode = ""; // Server debug level
-static char *dpath = DPATH;
+char *configfile = CPATH; /**< Server configuration file */
+int debuglevel = -1; /**< Server debug level */
+char *debugmode = ""; /**< Server debug level */
+static char *dpath = DPATH; /**< Working directory for daemon */
+static char *dbg_client; /**< Client specifier for chkconf */
-time_t nextconnect = 1; // time for next try_connections call
-time_t nextping = 1; // same as above for check_pings()
+static struct Timer connect_timer; /**< timer structure for try_connections() */
+static struct Timer ping_timer; /**< timer structure for check_pings() */
+static struct Timer destruct_event_timer; /**< timer structure for exec_expired_destruct_events() */
-static struct Daemon thisServer = { 0 }; // server process info
+/** Daemon information. */
+static struct Daemon thisServer = { 0, 0, 0, 0, 0, 0, -1 };
+/** Non-zero until we want to exit. */
+int running = 1;
/*----------------------------------------------------------------------------
* API: server_die
*--------------------------------------------------------------------------*/
-void server_die(const char* message) {
- ircd_log(L_CRIT, "Server terminating: %s", message);
- sendto_opmask_butone(0, SNO_OLDSNO, "Server terminating: %s", message);
+/** Terminate the server with a message.
+ * @param[in] message Message to log and send to operators.
+ */
+void server_die(const char *message)
+{
+ /* log_write will send out message to both log file and as server notice */
+ log_write(LS_SYSTEM, L_CRIT, 0, "Server terminating: %s", message);
flush_connections(0);
close_connections(1);
- thisServer.running = 0;
+ running = 0;
}
+/*----------------------------------------------------------------------------
+ * API: server_panic
+ *--------------------------------------------------------------------------*/
+/** Immediately terminate the server with a message.
+ * @param[in] message Message to log, but not send to operators.
+ */
+void server_panic(const char *message)
+{
+ /* inhibit sending server notice--we may be panicking due to low memory */
+ log_write(LS_SYSTEM, L_CRIT, LOG_NOSNOTICE, "Server panic: %s", message);
+ flush_connections(0);
+ log_close();
+ close_connections(1);
+ exit(1);
+}
/*----------------------------------------------------------------------------
* API: server_restart
*--------------------------------------------------------------------------*/
-void server_restart(const char* message) {
+/** Restart the server with a message.
+ * @param[in] message Message to log and send to operators.
+ */
+void server_restart(const char *message)
+{
static int restarting = 0;
- ircd_log(L_WARNING, "Restarting Server: %s", message);
- if (restarting)
+ /* inhibit sending any server notices; we may be in a loop */
+ log_write(LS_SYSTEM, L_WARNING, LOG_NOSNOTICE, "Restarting Server: %s",
+ message);
+ if (restarting++) /* increment restarting to prevent looping */
return;
sendto_opmask_butone(0, SNO_OLDSNO, "Restarting server: %s", message);
Debug((DEBUG_NOTICE, "Restarting server..."));
flush_connections(0);
- close_log();
- close_connections(!(thisServer.bootopt & (BOOT_TTY | BOOT_DEBUG)));
+ log_close();
+
+ close_connections(!(thisServer.bootopt & (BOOT_TTY | BOOT_DEBUG | BOOT_CHKCONF)));
+
+ reap_children();
execv(SPATH, thisServer.argv);
/* Have to reopen since it has been closed above */
- open_log(*thisServer.argv);
- ircd_log(L_CRIT, "execv(%s,%s) failed: %m\n", SPATH, *thisServer.argv);
+ log_reopen();
+
+ log_write(LS_SYSTEM, L_CRIT, 0, "execv(%s,%s) failed: %m", SPATH,
+ *thisServer.argv);
Debug((DEBUG_FATAL, "Couldn't restart server \"%s\": %s",
SPATH, (strerror(errno)) ? strerror(errno) : ""));
/*----------------------------------------------------------------------------
* outofmemory: Handler for out of memory conditions...
*--------------------------------------------------------------------------*/
+/** Handle out-of-memory condition. */
static void outofmemory(void) {
Debug((DEBUG_FATAL, "Out of memory: restarting server..."));
server_restart("Out of Memory");
-}
+}
/*----------------------------------------------------------------------------
* write_pidfile
*--------------------------------------------------------------------------*/
+/** Write process ID to PID file. */
static void write_pidfile(void) {
- FILE *pidf;
-
- if (!(pidf = fopen(PPATH, "w+"))) {
- Debug((DEBUG_NOTICE,
- "Error opening pid file \"%s\": %s", PPATH, strerror(errno)));
+ char buff[20];
+
+ if (thisServer.pid_fd >= 0) {
+ memset(buff, 0, sizeof(buff));
+ sprintf(buff, "%5d\n", (int)getpid());
+ if (write(thisServer.pid_fd, buff, strlen(buff)) == -1)
+ Debug((DEBUG_NOTICE, "Error writing to pid file %s: %m",
+ feature_str(FEAT_PPATH)));
return;
}
-
- if (fprintf(pidf, "%5d\n", getpid()) < 5)
- Debug((DEBUG_NOTICE, "Error writing to pid file %s", PPATH));
+ Debug((DEBUG_NOTICE, "Error opening pid file %s: %m",
+ feature_str(FEAT_PPATH)));
+}
+
+/** Try to create the PID file.
+ * @return Zero on success; non-zero on any error.
+ */
+static int check_pid(void)
+{
+ struct flock lock;
+
+ lock.l_type = F_WRLCK;
+ lock.l_start = 0;
+ lock.l_whence = SEEK_SET;
+ lock.l_len = 0;
+
+ if ((thisServer.pid_fd = open(feature_str(FEAT_PPATH), O_CREAT | O_RDWR,
+ 0600)) >= 0)
+ return fcntl(thisServer.pid_fd, F_SETLK, &lock) == -1;
- fclose(pidf);
+ return 1;
}
-/*----------------------------------------------------------------------------
- * try_connections
- *
- * Scan through configuration and try new connections.
- *
- * Returns the calendar time when the next call to this
- * function should be made latest. (No harm done if this
- * is called earlier or later...)
- *--------------------------------------------------------------------------*/
-static time_t try_connections(void) {
+/** Look for any connections that we should try to initiate.
+ * Reschedules itself to run again at the appropriate time.
+ * @param[in] ev Timer event (ignored).
+ */
+static void try_connections(struct Event* ev) {
struct ConfItem* aconf;
- struct Client* cptr;
struct ConfItem** pconf;
- int connecting;
- int confrq;
- time_t next = 0;
- struct ConnectionClass* cltmp;
- struct ConfItem* con_conf = 0;
+ time_t next;
struct Jupe* ajupe;
- unsigned int con_class = 0;
+ int hold;
+ int done;
- connecting = FALSE;
- Debug((DEBUG_NOTICE, "Connection check at : %s", myctime(CurrentTime)));
- for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
- /* Also when already connecting! (update holdtimes) --SRB */
- if (!(aconf->status & CONF_SERVER) || aconf->port == 0)
- continue;
+ assert(ET_EXPIRE == ev_type(ev));
+ assert(0 != ev_timer(ev));
- /* Also skip juped servers */
- if ((ajupe = jupe_find(aconf->name)) && JupeIsActive(ajupe))
- continue;
+ Debug((DEBUG_NOTICE, "Connection check at : %s", myctime(CurrentTime)));
+ next = CurrentTime + feature_int(FEAT_CONNECTFREQUENCY);
+ done = 0;
- /* Skip this entry if the use of it is still on hold until
- * future. Otherwise handle this entry (and set it on hold until next
- * time). Will reset only hold times, if already made one successfull
- * connection... [this algorithm is a bit fuzzy... -- msa >;) ]
+ for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
+ /* Only consider server items with non-zero port and non-zero
+ * connect times that are not actively juped.
*/
- if (aconf->hold > CurrentTime && (next > aconf->hold || next == 0)) {
- next = aconf->hold;
+ if (!(aconf->status & CONF_SERVER)
+ || aconf->address.port == 0
+ || !(aconf->flags & CONF_AUTOCONNECT)
+ || ((ajupe = jupe_find(aconf->name)) && JupeIsActive(ajupe)))
continue;
- }
- cltmp = aconf->conn_class;
- confrq = get_con_freq(cltmp);
- aconf->hold = CurrentTime + confrq;
+ /* Do we need to postpone this connection further? */
+ hold = aconf->hold > CurrentTime;
+
+ /* Update next possible connection check time. */
+ if (hold && next > aconf->hold)
+ next = aconf->hold;
- /* Found a CONNECT config with port specified, scan clients and see if
- * this server is already connected?
+ /* Do not try to connect if its use is still on hold until future,
+ * we have already initiated a connection this try_connections(),
+ * too many links in its connection class, it is already linked,
+ * or if connect rules forbid a link now.
*/
- cptr = FindServer(aconf->name);
+ if (hold || done
+ || (ConfLinks(aconf) > ConfMaxLinks(aconf))
+ || FindServer(aconf->name)
+ || conf_eval_crule(aconf->name, CRULE_MASK))
+ continue;
- if (!cptr && (Links(cltmp) < MaxLinks(cltmp)) &&
- (!connecting || (ConClass(cltmp) > con_class))) {
- /*
- * Check connect rules to see if we're allowed to try
- */
- if (0 == conf_eval_crule(aconf->name, CRULE_MASK)) {
- con_class = ConClass(cltmp);
- con_conf = aconf;
- /* We connect only one at time... */
- connecting = TRUE;
- }
- }
- if ((next > aconf->hold) || (next == 0))
- next = aconf->hold;
- }
- if (connecting) {
- if (con_conf->next) { /* are we already last? */
- /* Put the current one at the end and make sure we try all connections */
- for (pconf = &GlobalConfList; (aconf = *pconf); pconf = &(aconf->next))
- if (aconf == con_conf)
+ /* Ensure it is at the end of the list for future checks. */
+ if (aconf->next) {
+ /* Find aconf's location in the list and splice it out. */
+ for (pconf = &GlobalConfList; *pconf; pconf = &(*pconf)->next)
+ if (*pconf == aconf)
*pconf = aconf->next;
- (*pconf = con_conf)->next = 0;
+ /* Reinsert it at the end of the list (where pconf is now). */
+ *pconf = aconf;
+ aconf->next = 0;
}
- if (connect_server(con_conf, 0, 0))
+ /* Activate the connection itself. */
+ if (connect_server(aconf, 0))
sendto_opmask_butone(0, SNO_OLDSNO, "Connection to %s activated.",
- con_conf->name);
+ aconf->name);
+
+ /* And stop looking for further candidates. */
+ done = 1;
}
Debug((DEBUG_NOTICE, "Next connection check : %s", myctime(next)));
- return(next);
+ timer_add(&connect_timer, try_connections, 0, TT_ABSOLUTE, next);
}
-/*----------------------------------------------------------------------------
- * check_pings
- *
- * TODO: This should be moved out of ircd.c. It's protocol-specific when you
- * get right down to it. Can't really be done until the server is more
- * modular, however...
- *--------------------------------------------------------------------------*/
-static time_t check_pings(void) {
- int expire = 0;
- int next_check = CurrentTime + PINGFREQUENCY;
+/** Check for clients that have not sent a ping response recently.
+ * Reschedules itself to run again at the appropriate time.
+ * @param[in] ev Timer event (ignored).
+ */
+static void check_pings(struct Event* ev) {
+ int expire = 0;
+ int next_check = CurrentTime;
int max_ping = 0;
int i;
+
+ assert(ET_EXPIRE == ev_type(ev));
+ assert(0 != ev_timer(ev));
+
+ next_check += feature_int(FEAT_PINGFREQUENCY);
/* Scan through the client table */
for (i=0; i <= HighestFd; i++) {
/* Remove dead clients. */
if (IsDead(cptr)) {
- exit_client(cptr, cptr, &me, cptr->info);
+ exit_client(cptr, cptr, &me, cli_info(cptr));
continue;
}
- max_ping = IsRegistered(cptr) ? client_get_ping(cptr) : CONNECTTIMEOUT;
+ max_ping = IsRegistered(cptr) ? client_get_ping(cptr) :
+ feature_int(FEAT_CONNECTTIMEOUT);
Debug((DEBUG_DEBUG, "check_pings(%s)=status:%s limit: %d current: %d",
- cptr->name, (cptr->flags & FLAGS_PINGSENT) ? "[Ping Sent]" : "[]",
- max_ping, (int)(CurrentTime - cptr->lasttime)));
-
+ cli_name(cptr),
+ IsPingSent(cptr) ? "[Ping Sent]" : "[]",
+ max_ping, (int)(CurrentTime - cli_lasttime(cptr))));
+
+ /* If it's a server and we have not sent an AsLL lately, do so. */
+ if (IsServer(cptr)) {
+ if (CurrentTime - cli_serv(cptr)->asll_last >= max_ping) {
+ char *asll_ts;
+
+ SetPingSent(cptr);
+ cli_serv(cptr)->asll_last = CurrentTime;
+ expire = cli_serv(cptr)->asll_last + max_ping;
+ asll_ts = militime_float(NULL);
+ sendcmdto_prio_one(&me, CMD_PING, cptr, "!%s %s %s", asll_ts,
+ cli_name(cptr), asll_ts);
+ }
+
+ expire = cli_serv(cptr)->asll_last + max_ping;
+ if (expire < next_check)
+ next_check = expire;
+ }
/* Ok, the thing that will happen most frequently, is that someone will
* have sent something recently. Cover this first for speed.
+ * --
+ * If it's an unregistered client and hasn't managed to register within
+ * max_ping then it's obviously having problems (broken client) or it's
+ * just up to no good, so we won't skip it, even if its been sending
+ * data to us.
+ * -- hikari
*/
- if (CurrentTime-cptr->lasttime < max_ping) {
- expire = cptr->lasttime + max_ping;
+ if ((CurrentTime-cli_lasttime(cptr) < max_ping) && IsRegistered(cptr)) {
+ expire = cli_lasttime(cptr) + max_ping;
if (expire < next_check)
next_check = expire;
continue;
}
- /* Quit the client after max_ping*2 - they should have answered by now */
- if (CurrentTime-cptr->lasttime >= (max_ping*2) ) {
- /* If it was a server, then tell ops about it. */
- if (IsServer(cptr) || IsConnecting(cptr) || IsHandshake(cptr))
- sendto_opmask_butone(0, SNO_OLDSNO,
- "No response from %s, closing link", cptr->name);
- exit_client_msg(cptr, cptr, &me, "Ping timeout");
- continue;
- }
-
/* Unregistered clients pingout after max_ping seconds, they don't
* get given a second chance - if they were then people could not quite
* finish registration and hold resources without being subject to k/g
* lines
*/
if (!IsRegistered(cptr)) {
- /* Display message if they have sent a NICK and a USER but no
- * nospoof PONG.
- */
- if (*cptr->name && cptr->user && *cptr->user->username) {
- send_reply(cptr, SND_EXPLICIT | ERR_BADPING,
- ":Your client may not be compatible with this server.");
- send_reply(cptr, SND_EXPLICIT | ERR_BADPING,
- ":Compatible clients are available at "
- "ftp://ftp.undernet.org/pub/irc/clients");
- }
- exit_client_msg(cptr,cptr,&me, "Ping Timeout");
+ assert(!IsServer(cptr));
+ /* If client authorization time has expired, ask auth whether they
+ * should be checked again later. */
+ if ((CurrentTime-cli_firsttime(cptr) >= max_ping)
+ && auth_ping_timeout(cptr))
+ continue;
+ /* OK, they still have enough time left, so we'll just skip to the
+ * next client. Set the next check to be when their time is up, if
+ * that's before the currently scheduled next check -- hikari */
+ expire = cli_firsttime(cptr) + max_ping;
+ if (expire < next_check)
+ next_check = expire;
+ continue;
+ }
+
+ /* Quit the client after max_ping*2 - they should have answered by now */
+ if (CurrentTime-cli_lasttime(cptr) >= (max_ping*2) )
+ {
+ /* If it was a server, then tell ops about it. */
+ if (IsServer(cptr) || IsConnecting(cptr) || IsHandshake(cptr))
+ sendto_opmask_butone(0, SNO_OLDSNO,
+ "No response from %s, closing link",
+ cli_name(cptr));
+ exit_client_msg(cptr, cptr, &me, "Ping timeout");
continue;
}
- if (!(cptr->flags & FLAGS_PINGSENT)) {
- /* If we havent PINGed the connection and we havent heard from it in a
+ if (!IsPingSent(cptr))
+ {
+ /* If we haven't PINGed the connection and we haven't heard from it in a
* while, PING it to make sure it is still alive.
*/
- cptr->flags |= FLAGS_PINGSENT;
+ SetPingSent(cptr);
/* If we're late in noticing don't hold it against them :) */
- cptr->lasttime = CurrentTime - max_ping;
+ cli_lasttime(cptr) = CurrentTime - max_ping;
if (IsUser(cptr))
- sendrawto_one(cptr, MSG_PING " :%s", me.name);
+ sendrawto_one(cptr, MSG_PING " :%s", cli_name(&me));
else
- sendcmdto_one(&me, CMD_PING, cptr, ":%s", me.name);
+ sendcmdto_prio_one(&me, CMD_PING, cptr, ":%s", cli_name(&me));
}
- expire = cptr->lasttime + max_ping * 2;
+ expire = cli_lasttime(cptr) + max_ping * 2;
if (expire < next_check)
next_check=expire;
}
Debug((DEBUG_DEBUG, "[%i] check_pings() again in %is",
CurrentTime, next_check-CurrentTime));
- return next_check;
+ timer_add(&ping_timer, check_pings, 0, TT_ABSOLUTE, next_check);
}
-/*----------------------------------------------------------------------------
- * parse_command_line
- * Side Effects: changes GLOBALS me, thisServer, dpath, configfile, debuglevel
- * debugmode
- *--------------------------------------------------------------------------*/
+/** Parse command line arguments.
+ * Global variables are updated to reflect the arguments.
+ * As a side effect, makes sure the process's effective user id is the
+ * same as the real user id.
+ * @param[in] argc Number of arguments on command line.
+ * @param[in,out] argv Command-lne arguments.
+ */
static void parse_command_line(int argc, char** argv) {
- const char *options = "d:f:h:ntvx:";
+ const char *options = "d:f:h:nktvx:c:";
int opt;
if (thisServer.euid != thisServer.uid)
setuid(thisServer.uid);
- /* Do we really need to santiy check the non-NULLness of optarg? That's
+ /* Do we really need to sanity check the non-NULLness of optarg? That's
* getopt()'s job... Removing those... -zs
*/
while ((opt = getopt(argc, argv, options)) != EOF)
switch (opt) {
+ case 'k': thisServer.bootopt |= BOOT_CHKCONF | BOOT_TTY; break;
+ case 'c': dbg_client = optarg; break;
case 'n':
case 't': thisServer.bootopt |= BOOT_TTY; break;
case 'd': dpath = optarg; break;
case 'f': configfile = optarg; break;
- case 'h': ircd_strncpy(me.name, optarg, HOSTLEN); break;
- case 'v': printf("ircd %s\n", version); exit(0);
-
+ case 'h': ircd_strncpy(cli_name(&me), optarg, HOSTLEN); break;
+ case 'v':
+ printf("ircd %s\n", version);
+ printf("Event engines: ");
+#ifdef USE_KQUEUE
+ printf("kqueue() ");
+#endif
+#ifdef USE_DEVPOLL
+ printf("/dev/poll ");
+#endif
+#ifdef USE_EPOLL
+ printf("epoll_*() ");
+#endif
+#ifdef USE_POLL
+ printf("poll()");
+#else
+ printf("select()");
+#endif
+ printf("\nCompiled for a maximum of %d connections.\n", MAXCONNECTIONS);
+
+
+ exit(0);
+ break;
+
case 'x':
debuglevel = atoi(optarg);
if (debuglevel < 0)
debuglevel = 0;
debugmode = optarg;
thisServer.bootopt |= BOOT_DEBUG;
+#ifndef DEBUGMODE
+ printf("WARNING: DEBUGMODE disabled; -x has no effect.\n");
+#endif
break;
-
+
default:
- printf("Usage: ircd [-f config] [-h servername] [-x loglevel] [-ntv]\n");
- printf("\n -n -t\t Don't detach\n -v\t display version\n\n");
- printf("Server not started.\n");
+ printf("Usage: ircd [-f config] [-h servername] [-x loglevel] [-ntv] [-k [-c clispec]]\n"
+ "\n -f config\t specify explicit configuration file"
+ "\n -x loglevel\t set debug logging verbosity"
+ "\n -n or -t\t don't detach"
+ "\n -v\t\t display version"
+ "\n -k\t\t exit after checking config"
+ "\n -c clispec\t search for client/kill blocks matching client"
+ "\n\t\t clispec is comma-separated list of user@host,"
+ "\n\t\t user@ip, $Rrealname, and port number"
+ "\n\nServer not started.\n");
exit(1);
}
}
-/*----------------------------------------------------------------------------
- * daemon_init
- *--------------------------------------------------------------------------*/
+/** Become a daemon.
+ * @param[in] no_fork If non-zero, do not fork into the background.
+ */
static void daemon_init(int no_fork) {
- if (!init_connection_limits())
- exit(9);
-
- close_connections(!(thisServer.bootopt & (BOOT_DEBUG | BOOT_TTY)));
-
if (no_fork)
return;
setsid();
}
-
-/*----------------------------------------------------------------------------
- * event_loop
- *--------------------------------------------------------------------------*/
-static void event_loop(void) {
- time_t nextdnscheck = 0;
- time_t delay = 0;
-
- thisServer.running = 1;
- while (thisServer.running) {
- /* We only want to connect if a connection is due, not every time through.
- * Note, if there are no active C lines, this call to Tryconnections is
- * made once only; it will return 0. - avalon
- */
- if (nextconnect && CurrentTime >= nextconnect)
- nextconnect = try_connections();
-
- /* DNS checks. One to timeout queries, one for cache expiries. */
- nextdnscheck = timeout_resolver(CurrentTime);
-
- /* Take the smaller of the two 'timed' event times as the time of next
- * event (stops us being late :) - avalon
- * WARNING - nextconnect can return 0!
- */
- if (nextconnect)
- delay = IRCD_MIN(nextping, nextconnect);
- else
- delay = nextping;
-
- delay = IRCD_MIN(nextdnscheck, delay) - CurrentTime;
-
- /* Adjust delay to something reasonable [ad hoc values] (one might think
- * something more clever here... --msa) We don't really need to check that
- * often and as long as we don't delay too long, everything should be ok.
- * waiting too long can cause things to timeout... i.e. PINGS -> a
- * disconnection :( - avalon
- */
- if (delay < 1)
- read_message(1);
- else
- read_message(IRCD_MIN(delay, TIMESEC));
-
- /* ...perhaps should not do these loops every time, but only if there is
- * some chance of something happening (but, note that conf->hold times may
- * be changed elsewhere--so precomputed next event time might be too far
- * away... (similarly with ping times) --msa
- */
- if (CurrentTime >= nextping)
- nextping = check_pings();
-
- /* timeout pending queries that haven't been responded to */
- timeout_auth_queries(CurrentTime);
-
- IPcheck_expire();
-
- if (GlobalRehashFlag) {
- rehash(&me, 1);
- GlobalRehashFlag = 0;
- }
-
- if (GlobalRestartFlag)
- server_restart("caught signal: SIGINT");
- }
-}
-
-/*----------------------------------------------------------------------------
- * check_file_access: random helper function to make sure that a file is
- * accessible in a certain way, and complain if not.
- *--------------------------------------------------------------------------*/
+/** Check that we have access to a particular file.
+ * If we do not have access to the file, complain on stderr.
+ * @param[in] path File name to check for access.
+ * @param[in] which Configuration character associated with file.
+ * @param[in] mode Bitwise combination of R_OK, W_OK, X_OK and/or F_OK.
+ * @return Non-zero if we have the necessary access, zero if not.
+ */
static char check_file_access(const char *path, char which, int mode) {
if (!access(path, mode))
return 1;
fprintf(stderr,
"Check on %cPATH (%s) failed: %s\n"
- "Please create file and/or rerun `make config' and "
- "recompile to correct this.\n",
- which, path, strerror(errno));
-
-#ifdef CHROOTDIR
- fprintf(stderr, "Keep in mind that paths are relative to CHROOTDIR.\n");
-#endif
+ "Please create this file and/or rerun `configure' "
+ "using --with-%cpath and recompile to correct this.\n",
+ which, path, strerror(errno), which);
return 0;
}
* set_core_limit
*--------------------------------------------------------------------------*/
#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
+/** Set the core size soft limit to the same as the hard limit. */
static void set_core_limit(void) {
struct rlimit corelim;
-/*----------------------------------------------------------------------------
- * set_chroot_environment
- *--------------------------------------------------------------------------*/
-#ifdef CHROOTDIR
-static char set_chroot_environment(void) {
- /* Must be root to chroot! Silly if you ask me... */
- if (geteuid())
- seteuid(0);
-
- if (chdir(dpath)) {
- fprintf(stderr, "Fail: Cannot chdir(%s): %s\n", dpath, strerror(errno));
- return 0;
- }
- if (chroot(dpath)) {
- fprintf(stderr, "Fail: Cannot chroot(%s): %s\n", dpath, strerror(errno));
- return 0;
- }
- dpath = "/";
- return 1;
-}
-#endif
-
-
-/*----------------------------------------------------------------------------
- * set_userid_if_needed()
- *--------------------------------------------------------------------------*/
+/** Complain to stderr if any user or group ID belongs to the superuser.
+ * @return Non-zero if all IDs are okay, zero if some are 0.
+ */
static int set_userid_if_needed(void) {
- /* TODO: Drop privs correctly! */
-#if defined(IRC_GID) && defined(IRC_UID)
- setgid (IRC_GID);
- setegid(IRC_GID);
- setuid (IRC_UID);
- seteuid(IRC_UID);
-#endif
-
if (getuid() == 0 || geteuid() == 0 ||
getgid() == 0 || getegid() == 0) {
fprintf(stderr, "ERROR: This server will not run as superuser.\n");
* we're doing waaaaaaaaay too much server initialization here. I hate
* long and ugly control paths... -smd
*--------------------------------------------------------------------------*/
+/** Run the daemon.
+ * @param[in] argc Number of arguments in \a argv.
+ * @param[in] argv Arguments to program execution.
+ */
int main(int argc, char **argv) {
CurrentTime = time(NULL);
thisServer.uid = getuid();
thisServer.euid = geteuid();
-#ifdef CHROOTDIR
- if (!set_chroot_environment())
- return 1;
+#ifdef MDEBUG
+ mem_dbg_initialise();
#endif
#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
umask(077); /* better safe than sorry --SRB */
memset(&me, 0, sizeof(me));
- me.fd = -1;
+ memset(&me_con, 0, sizeof(me_con));
+ cli_connect(&me) = &me_con;
+ cli_fd(&me) = -1;
parse_command_line(argc, argv);
/* Check paths for accessibility */
if (!check_file_access(SPATH, 'S', X_OK) ||
- !check_file_access(configfile, 'C', R_OK) ||
- !check_file_access(MPATH, 'M', R_OK) ||
- !check_file_access(RPATH, 'R', R_OK))
+ !check_file_access(configfile, 'C', R_OK))
return 4;
-
-#ifdef DEBUG
- if (!check_file_access(LPATH, 'L', W_OK))
- return 5;
-#endif
- debug_init(thisServer.bootopt & BOOT_TTY);
+ if (!init_connection_limits())
+ return 9;
+
+ close_connections(!(thisServer.bootopt & (BOOT_DEBUG | BOOT_TTY | BOOT_CHKCONF)));
+
+ /* daemon_init() must be before event_init() because kqueue() FDs
+ * are, perversely, not inherited across fork().
+ */
daemon_init(thisServer.bootopt & BOOT_TTY);
- setup_signals();
- open_log(*argv);
+#ifdef DEBUGMODE
+ /* Must reserve fd 2... */
+ if (debuglevel >= 0 && !(thisServer.bootopt & BOOT_TTY)) {
+ int fd;
+ if ((fd = open("/dev/null", O_WRONLY)) < 0) {
+ fprintf(stderr, "Unable to open /dev/null (to reserve fd 2): %s\n",
+ strerror(errno));
+ return 8;
+ }
+ if (fd != 2 && dup2(fd, 2) < 0) {
+ fprintf(stderr, "Unable to reserve fd 2; dup2 said: %s\n",
+ strerror(errno));
+ return 8;
+ }
+ }
+#endif
+
+ event_init(MAXCONNECTIONS);
+ setup_signals();
+ feature_init(); /* initialize features... */
+ log_init(*argv);
set_nomem_handler(outofmemory);
-
- if (!init_string()) {
- ircd_log(L_CRIT, "Failed to initialize string module");
- return 6;
- }
initload();
init_list();
initmsgtree();
initstats();
- init_resolver();
+ /* we need this for now, when we're modular this
+ should be removed -- hikari */
+ ircd_crypt_init();
+
+ motd_init();
if (!init_conf()) {
- ircd_log(L_CRIT, "Failed to read configuration file %s", configfile);
+ log_write(LS_SYSTEM, L_CRIT, 0, "Failed to read configuration file %s",
+ configfile);
return 7;
}
+ if (thisServer.bootopt & BOOT_CHKCONF) {
+ if (dbg_client)
+ conf_debug_iline(dbg_client);
+ fprintf(stderr, "Configuration file %s checked okay.\n", configfile);
+ return 0;
+ }
+
+ debug_init(thisServer.bootopt & BOOT_TTY);
+ if (check_pid()) {
+ Debug((DEBUG_FATAL, "Failed to acquire PID file lock after fork"));
+ exit(2);
+ }
+
init_server_identity();
uping_init();
- motd_init();
+ stats_init();
+
+ IPcheck_init();
+ timer_add(timer_init(&connect_timer), try_connections, 0, TT_RELATIVE, 1);
+ timer_add(timer_init(&ping_timer), check_pings, 0, TT_RELATIVE, 1);
+ timer_add(timer_init(&destruct_event_timer), exec_expired_destruct_events, 0, TT_PERIODIC, 60);
CurrentTime = time(NULL);
SetMe(&me);
- me.from = &me;
+ cli_magic(&me) = CLIENT_MAGIC;
+ cli_from(&me) = &me;
make_server(&me);
- me.serv->timestamp = TStime(); /* Abuse own link timestamp as start TS */
- me.serv->prot = atoi(MAJOR_PROTOCOL);
- me.serv->up = &me;
- me.serv->down = NULL;
- me.handler = SERVER_HANDLER;
+ cli_serv(&me)->timestamp = TStime(); /* Abuse own link timestamp as start TS */
+ cli_serv(&me)->prot = atoi(MAJOR_PROTOCOL);
+ cli_serv(&me)->up = &me;
+ cli_serv(&me)->down = NULL;
+ cli_handler(&me) = SERVER_HANDLER;
SetYXXCapacity(&me, MAXCLIENTS);
- me.lasttime = me.since = me.firsttime = CurrentTime;
+ cli_lasttime(&me) = cli_since(&me) = cli_firsttime(&me) = CurrentTime;
hAddClient(&me);
+#ifdef IPV6
+ SetIPv6(&me);
+#endif
write_pidfile();
init_counters();
Debug((DEBUG_NOTICE, "Server ready..."));
- ircd_log(L_NOTICE, "Server Ready");
+ log_write(LS_SYSTEM, L_NOTICE, 0, "Server Ready");
event_loop();
projects / ircu2.10.12-pk.git / blobdiff