* 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" /* set_nomem_handler */
+#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 "listener.h"
#include "match.h"
+#include "motd.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 "struct.h"
#include "sys.h"
+#include "uping.h"
#include "userload.h"
#include "version.h"
#include "whowas.h"
-#include "msg.h"
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
#include <errno.h>
#include <fcntl.h>
+#include <netdb.h>
#include <pwd.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>
-#include <netdb.h>
+
+
+/*----------------------------------------------------------------------------
+ * External stuff
+ *--------------------------------------------------------------------------*/
extern void init_counters(void);
+extern void mem_dbg_initialise(void);
+
+/*----------------------------------------------------------------------------
+ * Constants / Enums
+ *--------------------------------------------------------------------------*/
+enum {
+ 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 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; /**< Working directory for daemon */
+static char *dbg_client; /**< Client specifier for chkconf */
+
+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() */
+
+/** 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
+ *--------------------------------------------------------------------------*/
+/** 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);
+ running = 0;
+}
-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() */
-
-char **myargv;
-char *configfile = CPATH; /* Server configuration file */
-int debuglevel = -1; /* Server debug level */
-unsigned int bootopt = 0; /* Server boot option flags */
-char *debugmode = ""; /* -"- -"- -"- */
-static char *dpath = DPATH;
-
-time_t nextconnect = 1; /* time for next try_connections call */
-time_t nextping = 1; /* same as above for check_pings() */
-time_t nextdnscheck = 0; /* next time to poll dns to force timeouts */
-time_t nextexpire = 1; /* next expire run on the dns cache */
-
-#ifdef PROFIL
-extern etext(void);
-#endif
+/*----------------------------------------------------------------------------
+ * 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);
+}
-static void server_reboot(const char* message)
+/*----------------------------------------------------------------------------
+ * API: server_restart
+ *--------------------------------------------------------------------------*/
+/** Restart the server with a message.
+ * @param[in] message Message to log and send to operators.
+ */
+void server_restart(const char *message)
{
- int i;
+ static int restarting = 0;
- sendto_ops("Restarting server: %s", message);
+ /* 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);
- /*
- * fd 0 must be 'preserved' if either the -d or -i options have
- * been passed to us before restarting.
- */
- close_log();
- for (i = 3; i < MAXCONNECTIONS; i++)
- close(i);
- if (!(bootopt & (BOOT_TTY | BOOT_DEBUG)))
- close(2);
- close(1);
- close(0);
+ log_close();
- execv(SPATH, myargv);
+ close_connections(!(thisServer.bootopt & (BOOT_TTY | BOOT_DEBUG | BOOT_CHKCONF)));
- /* Have to reopen since it has been closed above */
- open_log(myargv[0]);
- ircd_log(L_CRIT, "execv(%s,%s) failed: %m\n", SPATH, myargv[0]);
+ reap_children();
- Debug((DEBUG_FATAL, "Couldn't restart server \"%s\": %s",
- SPATH, strerror(errno)));
- exit(-1);
-}
+ execv(SPATH, thisServer.argv);
-void server_die(const char* message)
-{
- ircd_log(L_CRIT, "Server terminating: %s", message);
- sendto_ops("Server terminating: %s", message);
- flush_connections(0);
- exit(-1);
-}
+ /* Have to reopen since it has been closed above */
+ log_reopen();
-void server_restart(const char* message)
-{
- static int restarting = 0;
+ log_write(LS_SYSTEM, L_CRIT, 0, "execv(%s,%s) failed: %m", SPATH,
+ *thisServer.argv);
- ircd_log(L_WARNING, "Restarting Server: %s", message);
- if (restarting == 0) {
- restarting = 1;
- server_reboot(message);
- }
+ Debug((DEBUG_FATAL, "Couldn't restart server \"%s\": %s",
+ SPATH, (strerror(errno)) ? strerror(errno) : ""));
+ exit(8);
}
-static void outofmemory(void)
-{
+
+/*----------------------------------------------------------------------------
+ * 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");
-}
+}
-static void write_pidfile(void)
-{
-#ifdef PPATH
- int fd;
+
+/*----------------------------------------------------------------------------
+ * write_pidfile
+ *--------------------------------------------------------------------------*/
+/** Write process ID to PID file. */
+static void write_pidfile(void) {
char buff[20];
- if ((fd = open(PPATH, O_CREAT | O_WRONLY, 0600)) >= 0) {
+
+ if (thisServer.pid_fd >= 0) {
memset(buff, 0, sizeof(buff));
sprintf(buff, "%5d\n", (int)getpid());
- if (write(fd, buff, strlen(buff)) == -1)
- Debug((DEBUG_NOTICE, "Error writing to pid file %s", PPATH));
- close(fd);
+ if (write(thisServer.pid_fd, buff, strlen(buff)) == -1)
+ Debug((DEBUG_NOTICE, "Error writing to pid file %s: %m",
+ feature_str(FEAT_PPATH)));
return;
}
- Debug((DEBUG_NOTICE, "Error opening pid file \"%s\": %s",
- PPATH, strerror(errno)));
-#endif
+ Debug((DEBUG_NOTICE, "Error opening pid file %s: %m",
+ feature_str(FEAT_PPATH)));
}
-/*
- * 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...)
+/** Try to create the PID file.
+ * @return Zero on success; non-zero on any error.
*/
-static time_t try_connections(void)
+static int check_pid(void)
{
- struct ConfItem *aconf;
- struct Client *cptr;
- struct ConfItem **pconf;
- int connecting, confrq;
- time_t next = 0;
- struct ConfClass *cltmp;
- struct ConfItem *cconf, *con_conf = NULL;
- struct Jupe *ajupe;
- unsigned int con_class = 0;
-
- connecting = FALSE;
+ 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;
+
+ return 1;
+}
+
+
+/** 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 ConfItem** pconf;
+ time_t next;
+ struct Jupe* ajupe;
+ int hold;
+ int done;
+
+ assert(ET_EXPIRE == ev_type(ev));
+ assert(0 != ev_timer(ev));
+
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;
+ next = CurrentTime + feature_int(FEAT_CONNECTFREQUENCY);
+ done = 0;
- /* Also skip juped servers */
- if ((ajupe = jupe_find(aconf->name)) && JupeIsActive(ajupe))
+ 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->status & CONF_SERVER)
+ || aconf->address.port == 0
+ || !(aconf->flags & CONF_AUTOCONNECT)
+ || ((ajupe = jupe_find(aconf->name)) && JupeIsActive(ajupe)))
continue;
- cltmp = aconf->confClass;
- /*
- * 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 >;) ]
- */
+ /* Do we need to postpone this connection further? */
+ hold = aconf->hold > CurrentTime;
- if ((aconf->hold > CurrentTime))
- {
- if ((next > aconf->hold) || (next == 0))
+ /* Update next possible connection check time. */
+ if (hold && next > aconf->hold)
next = aconf->hold;
- continue;
- }
- confrq = get_con_freq(cltmp);
- aconf->hold = CurrentTime + confrq;
- /*
- * 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 */
- for (cconf = GlobalConfList; cconf; cconf = cconf->next)
- if ((cconf->status & CONF_CRULE) &&
- (match(cconf->host, aconf->name) == 0))
- if (crule_eval(cconf->passwd))
- break;
- if (!cconf)
- {
- 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))
- sendto_ops("Connection to %s activated.", con_conf->name);
+
+ /* Activate the connection itself. */
+ if (connect_server(aconf, 0))
+ sendto_opmask_butone(0, SNO_OLDSNO, "Connection to %s activated.",
+ 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);
}
-static time_t check_pings(void)
-{
- struct Client *cptr;
- int ping = 0;
+
+/** 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;
- time_t oldest = CurrentTime + PINGFREQUENCY;
- time_t timeout;
- for (i = 0; i <= HighestFd; i++) {
- if (!(cptr = LocalClientArray[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++) {
+ struct Client *cptr = LocalClientArray[i];
+
+ if (!cptr)
continue;
- /*
- * me is never in the local client array
- */
- assert(cptr != &me);
- /*
- * Note: No need to notify opers here.
- * It's already done when "FLAGS_DEADSOCKET" is set.
- */
+
+ assert(&me != cptr); /* I should never be in the local client array! */
+
+
+ /* Remove dead clients. */
if (IsDead(cptr)) {
- exit_client(cptr, cptr, &me, LastDeadComment(cptr));
+ exit_client(cptr, cptr, &me, cli_info(cptr));
continue;
}
- ping = IsRegistered(cptr) ? get_client_ping(cptr) : CONNECTTIMEOUT;
- Debug((DEBUG_DEBUG, "c(%s)=%d p %d a %d",
- cptr->name, cptr->status, ping,
- (int)(CurrentTime - cptr->lasttime)));
- /*
- * Ok, so goto's are ugly and can be avoided here but this code
- * is already indented enough so I think its justified. -avalon
+ max_ping = IsRegistered(cptr) ? client_get_ping(cptr) :
+ feature_int(FEAT_CONNECTTIMEOUT);
+
+ Debug((DEBUG_DEBUG, "check_pings(%s)=status:%s limit: %d current: %d",
+ 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 (IsRegistered(cptr) && (ping >= CurrentTime - cptr->lasttime))
- goto ping_timeout;
- /*
- * If the server hasnt talked to us in 2 * ping seconds
- * and it has a ping time, then close its connection.
- * If the client is a user and a KILL line was found
- * to be active, close this connection too.
+ if ((CurrentTime-cli_lasttime(cptr) < max_ping) && IsRegistered(cptr)) {
+ expire = cli_lasttime(cptr) + max_ping;
+ if (expire < next_check)
+ next_check = expire;
+ 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 (((CurrentTime - cptr->lasttime) >= (2 * ping) && (cptr->flags & FLAGS_PINGSENT)) ||
- (!IsRegistered(cptr) && !IsHandshake(cptr) && (CurrentTime - cptr->firsttime) >= ping))
+ if (!IsRegistered(cptr)) {
+ 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_ops("No response from %s, closing link", cptr->name);
- exit_client(cptr, cptr, &me, "Ping timeout");
- continue;
- }
- else {
- if (!IsRegistered(cptr) && *cptr->name && *cptr->user->username) {
- sendto_one(cptr,
- ":%s %d %s :Your client may not be compatible with this server.",
- me.name, ERR_BADPING, cptr->name);
- sendto_one(cptr,
- ":%s %d %s :Compatible clients are available at "
- "ftp://ftp.undernet.org/pub/irc/clients",
- me.name, ERR_BADPING, cptr->name);
- }
- exit_client_msg(cptr, cptr, &me, "Ping timeout for %s",
- get_client_name(cptr, HIDE_IP));
- }
+ sendto_opmask_butone(0, SNO_OLDSNO,
+ "No response from %s, closing link",
+ cli_name(cptr));
+ exit_client_msg(cptr, cptr, &me, "Ping timeout");
continue;
}
- else if (IsRegistered(cptr) && 0 == (cptr->flags & FLAGS_PINGSENT)) {
- /*
- * If we havent PINGed the connection and we havent
- * heard from it in a while, PING it to make sure
- * it is still alive.
- */
- cptr->flags |= FLAGS_PINGSENT;
- /*
- * not nice but does the job
+
+ 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->lasttime = CurrentTime - ping;
+ SetPingSent(cptr);
+
+ /* If we're late in noticing don't hold it against them :) */
+ cli_lasttime(cptr) = CurrentTime - max_ping;
+
if (IsUser(cptr))
- sendto_one(cptr, "PING :%s", me.name);
+ sendrawto_one(cptr, MSG_PING " :%s", cli_name(&me));
else
- sendto_one(cptr, "%s " TOK_PING " :%s", NumServ(&me), me.name);
+ sendcmdto_prio_one(&me, CMD_PING, cptr, ":%s", cli_name(&me));
}
-ping_timeout:
- timeout = cptr->lasttime + ping;
- while (timeout <= CurrentTime)
- timeout += ping;
- if (timeout < oldest)
- oldest = timeout;
+
+ expire = cli_lasttime(cptr) + max_ping * 2;
+ if (expire < next_check)
+ next_check=expire;
}
- if (oldest < CurrentTime)
- oldest = CurrentTime + PINGFREQUENCY;
- Debug((DEBUG_NOTICE,
- "Next check_ping() call at: %s, %d " TIME_T_FMT " " TIME_T_FMT,
- myctime(oldest), ping, oldest, CurrentTime));
-
- return (oldest);
+
+ assert(next_check >= CurrentTime);
+
+ Debug((DEBUG_DEBUG, "[%i] check_pings() again in %is",
+ CurrentTime, next_check-CurrentTime));
+
+ timer_add(&ping_timer, check_pings, 0, TT_ABSOLUTE, next_check);
}
-/*
- * bad_command
- *
- * This is called when the commandline is not acceptable.
- * Give error message and exit without starting anything.
+
+/** 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 int bad_command(void)
-{
- printf("Usage: ircd %s[-h servername] [-x loglevel] [-t]\n",
-#ifdef CMDLINE_CONFIG
- "[-f config] "
+static void parse_command_line(int argc, char** argv) {
+ const char *options = "d:f:h:nktvx:c:";
+ int opt;
+
+ if (thisServer.euid != thisServer.uid)
+ setuid(thisServer.uid);
+
+ /* 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(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("Server not started\n\n");
- return (-1);
-}
+ printf("\nCompiled for a maximum of %d connections.\n", MAXCONNECTIONS);
-int main(int argc, char *argv[])
-{
- uid_t uid;
- uid_t euid;
- time_t delay = 0;
-#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
- struct rlimit corelim;
-#endif
- CurrentTime = time(NULL);
+ exit(0);
+ break;
- /*
- * sanity check
- */
- if (MAXCONNECTIONS < 64 || MAXCONNECTIONS > 256000) {
- fprintf(stderr, "%s: MAXCONNECTIONS insane: %d\n", *argv, MAXCONNECTIONS);
- return 2;
- }
-
- uid = getuid();
- euid = geteuid();
-#ifdef PROFIL
- monstartup(0, etext);
- moncontrol(1);
- signal(SIGUSR1, s_monitor);
+ 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] [-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);
+ }
+}
-#ifdef CHROOTDIR
- if (chdir(DPATH))
- {
- fprintf(stderr, "Fail: Cannot chdir(%s): %s\n", DPATH, strerror(errno));
- exit(2);
- }
- if (chroot(DPATH))
+
+/** Become a daemon.
+ * @param[in] no_fork If non-zero, do not fork into the background.
+ */
+static void daemon_init(int no_fork) {
+ if (no_fork)
+ return;
+
+ if (fork())
+ exit(0);
+
+#ifdef TIOCNOTTY
{
- fprintf(stderr, "Fail: Cannot chroot(%s): %s\n", DPATH, strerror(errno));
- exit(5);
+ int fd;
+ if ((fd = open("/dev/tty", O_RDWR)) > -1) {
+ ioctl(fd, TIOCNOTTY, 0);
+ close(fd);
+ }
}
- dpath = "/";
-#endif /*CHROOTDIR */
+#endif
- myargv = argv;
- umask(077); /* better safe than sorry --SRB */
- memset(&me, 0, sizeof(me));
- me.fd = -1;
+ setsid();
+}
-#if 0
-#ifdef VIRTUAL_HOST
- memset(&vserv, 0, sizeof(vserv));
-#endif
-#endif
+/** 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;
- setup_signals();
- initload();
+ fprintf(stderr,
+ "Check on %cPATH (%s) failed: %s\n"
+ "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)
- if (getrlimit(RLIMIT_CORE, &corelim))
- {
+/** Set the core size soft limit to the same as the hard limit. */
+static void set_core_limit(void) {
+ struct rlimit corelim;
+
+ if (getrlimit(RLIMIT_CORE, &corelim)) {
fprintf(stderr, "Read of rlimit core size failed: %s\n", strerror(errno));
corelim.rlim_max = RLIM_INFINITY; /* Try to recover */
}
+
corelim.rlim_cur = corelim.rlim_max;
if (setrlimit(RLIMIT_CORE, &corelim))
fprintf(stderr, "Setting rlimit core size failed: %s\n", strerror(errno));
+}
#endif
- /*
- * All command line parameters have the syntax "-fstring"
- * or "-f string" (e.g. the space is optional). String may
- * be empty. Flag characters cannot be concatenated (like
- * "-fxyz"), it would conflict with the form "-fstring".
- */
- while (--argc > 0 && (*++argv)[0] == '-')
- {
- char *p = argv[0] + 1;
- int flag = *p++;
- if (flag == '\0' || *p == '\0')
- {
- if (argc > 1 && argv[1][0] != '-')
- {
- p = *++argv;
- argc -= 1;
- }
- else
- p = "";
- }
- switch (flag)
- {
- case 'q':
- bootopt |= BOOT_QUICK;
- break;
- case 'd':
- if (euid != uid)
- setuid((uid_t) uid);
- dpath = p;
- break;
-#ifdef CMDLINE_CONFIG
- case 'f':
- if (euid != uid)
- setuid((uid_t) uid);
- configfile = p;
- break;
-#endif
- case 'h':
- ircd_strncpy(me.name, p, HOSTLEN);
- break;
- case 't':
- if (euid != uid)
- setuid((uid_t) uid);
- bootopt |= BOOT_TTY;
- break;
- case 'v':
- printf("ircd %s\n", version);
- exit(0);
-#if 0
-#ifdef VIRTUAL_HOST
- case 'w':
- {
- struct hostent *hep;
- if (!(hep = gethostbyname(p)))
- {
- fprintf(stderr, "%s: Error creating virtual host \"%s\": %d",
- argv[0], p, h_errno);
- return 2;
- }
- if (hep->h_addrtype == AF_INET && hep->h_addr_list[0] &&
- !hep->h_addr_list[1])
- {
- memcpy(&vserv.sin_addr, hep->h_addr_list[0], sizeof(struct in_addr));
- vserv.sin_family = AF_INET;
- }
- else
- {
- fprintf(stderr, "%s: Error creating virtual host \"%s\": "
- "Use -w <IP-number of interface>\n", argv[0], p);
- return 2;
- }
- break;
- }
-#endif
-#endif
- case 'x':
-#ifdef DEBUGMODE
- if (euid != uid)
- setuid((uid_t) uid);
- debuglevel = atoi(p);
- debugmode = *p ? p : "0";
- bootopt |= BOOT_DEBUG;
- break;
-#else
- fprintf(stderr, "%s: DEBUGMODE must be defined for -x y\n", myargv[0]);
- exit(0);
-#endif
- default:
- bad_command();
- break;
- }
+/** 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) {
+ if (getuid() == 0 || geteuid() == 0 ||
+ getgid() == 0 || getegid() == 0) {
+ fprintf(stderr, "ERROR: This server will not run as superuser.\n");
+ return 0;
}
- if (chdir(dpath))
- {
- fprintf(stderr, "Fail: Cannot chdir(%s): %s\n", dpath, strerror(errno));
- exit(2);
- }
+ return 1;
+}
-#ifndef IRC_UID
- if ((uid != euid) && !euid)
- {
- fprintf(stderr,
- "ERROR: do not run ircd setuid root. Make it setuid a normal user.\n");
- exit(2);
- }
-#endif
-#if !defined(CHROOTDIR) || (defined(IRC_UID) && defined(IRC_GID))
- if (euid != uid)
- {
- setuid(uid);
- setuid(euid);
- }
+/*----------------------------------------------------------------------------
+ * main - entrypoint
+ *
+ * TODO: This should set the basic environment up and start the main loop.
+ * 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);
- if (0 == getuid())
- {
-#if defined(IRC_UID) && defined(IRC_GID)
+ thisServer.argc = argc;
+ thisServer.argv = argv;
+ thisServer.uid = getuid();
+ thisServer.euid = geteuid();
- /* run as a specified user */
- fprintf(stderr, "WARNING: running ircd with uid = %d\n", IRC_UID);
- fprintf(stderr, " changing to gid %d.\n", IRC_GID);
- setuid(IRC_UID);
- setgid(IRC_GID);
-#else
- /* check for setuid root as usual */
- fprintf(stderr,
- "ERROR: do not run ircd setuid root. Make it setuid a normal user.\n");
- exit(2);
+#ifdef MDEBUG
+ mem_dbg_initialise();
+#endif
+
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
+ set_core_limit();
#endif
+
+ umask(077); /* better safe than sorry --SRB */
+ memset(&me, 0, sizeof(me));
+ memset(&me_con, 0, sizeof(me_con));
+ cli_connect(&me) = &me_con;
+ cli_fd(&me) = -1;
+
+ parse_command_line(argc, argv);
+
+ if (chdir(dpath)) {
+ fprintf(stderr, "Fail: Cannot chdir(%s): %s, check DPATH\n", dpath, strerror(errno));
+ return 2;
}
-#endif /*CHROOTDIR/UID/GID */
- if (argc > 0)
- return bad_command(); /* This should exit out */
+ if (!set_userid_if_needed())
+ return 3;
- /* Sanity checks */
- {
- char c;
- char *path;
-
- c = 'S';
- path = SPATH;
- if (access(path, X_OK) == 0) {
- c = 'C';
- path = CPATH;
- if (access(path, R_OK) == 0) {
- c = 'M';
- path = MPATH;
- if (access(path, R_OK) == 0) {
- c = 'R';
- path = RPATH;
- if (access(path, R_OK) == 0) {
-#ifndef DEBUG
- c = 0;
-#else
- c = 'L';
- path = LPATH;
- if (access(path, W_OK) == 0)
- c = 0;
-#endif
- }
- }
- }
+ /* Check paths for accessibility */
+ if (!check_file_access(SPATH, 'S', X_OK) ||
+ !check_file_access(configfile, 'C', R_OK))
+ return 4;
+
+ 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);
+
+#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 (c)
- {
- fprintf(stderr, "Check on %cPATH (%s) failed: %s\n",
- c, path, strerror(errno));
- fprintf(stderr,
- "Please create file and/or rerun `make config' and recompile to correct this.\n");
-#ifdef CHROOTDIR
- fprintf(stderr,
- "Keep in mind that all paths are relative to CHROOTDIR.\n");
-#endif
- exit(2);
+ 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);
+ initload();
init_list();
- hash_init();
- initclass();
+ init_hash();
+ init_class();
initwhowas();
initmsgtree();
initstats();
- open_debugfile();
- init_sys();
- set_nomem_handler(outofmemory);
- me.fd = -1;
+ /* we need this for now, when we're modular this
+ should be removed -- hikari */
+ ircd_crypt_init();
- open_log(myargv[0]);
+ motd_init();
- if (initconf(bootopt) == -1) {
- Debug((DEBUG_FATAL, "Failed in reading configuration file %s", configfile));
- printf("Couldn't open configuration file %s\n", configfile);
- exit(2);
+ if (!init_conf()) {
+ log_write(LS_SYSTEM, L_CRIT, 0, "Failed to read configuration file %s",
+ configfile);
+ return 7;
}
- if (!init_server_identity()) {
- Debug((DEBUG_FATAL, "Failed to initialize server identity"));
+
+ 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);
}
- read_tlines();
- rmotd = read_motd(RPATH);
- motd = read_motd(MPATH);
+
+ init_server_identity();
+
+ uping_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);
- me.from = &me;
+
SetMe(&me);
+ cli_magic(&me) = CLIENT_MAGIC;
+ cli_from(&me) = &me;
make_server(&me);
- /*
- * Abuse own link timestamp as start timestamp:
- */
- me.serv->timestamp = TStime();
- 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);
+ SetIPv6(&me);
- check_class();
write_pidfile();
-
init_counters();
Debug((DEBUG_NOTICE, "Server ready..."));
- ircd_log(L_NOTICE, "Server Ready");
+ log_write(LS_SYSTEM, L_NOTICE, 0, "Server Ready");
- for (;;)
- {
- /*
- * 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);
- 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)
- delay = 1;
- else
- delay = IRCD_MIN(delay, TIMESEC);
- read_message(delay);
-
- Debug((DEBUG_DEBUG, "Got message(s)"));
-
- /*
- * ...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);
+ event_loop();
- if (GlobalRehashFlag) {
- rehash(&me, 1);
- GlobalRehashFlag = 0;
- }
- if (GlobalRestartFlag)
- server_restart("caught signal: SIGINT");
- }
+ return 0;
}
+
+
projects / ircu2.10.12-pk.git / blobdiff