* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* @file
+/** @file
* @brief Entry point and other initialization functions for the daemon.
* @version $Id$
*/
#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>
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() */
*/
void server_panic(const char *message)
{
- /* inhibit sending server notice--we may be panicing due to low memory */
+ /* 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(!(thisServer.bootopt & (BOOT_TTY | BOOT_DEBUG | BOOT_CHKCONF)));
+ reap_children();
+
execv(SPATH, thisServer.argv);
/* Have to reopen since it has been closed above */
*/
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;
- const char* con_class = NULL;
+ int hold;
+ int done;
assert(ET_EXPIRE == ev_type(ev));
assert(0 != ev_timer(ev));
- 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->address.port == 0 || aconf->hold == 0)
- continue;
+ next = CurrentTime + feature_int(FEAT_CONNECTFREQUENCY);
+ done = 0;
- /* Also skip juped servers */
- if ((ajupe = jupe_find(aconf->name)) && JupeIsActive(ajupe))
- continue;
-
- /* 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);
- if(confrq == 0)
- aconf->hold = next = 0;
- else
- 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))
+ /* Activate the connection itself. */
+ if (connect_server(aconf, 0))
sendto_opmask_butone(0, SNO_OLDSNO, "Connection to %s activated.",
- con_conf->name);
- }
+ aconf->name);
- if (next == 0)
- next = CurrentTime + feature_int(FEAT_CONNECTFREQUENCY);
+ /* And stop looking for further candidates. */
+ done = 1;
+ }
Debug((DEBUG_NOTICE, "Next connection check : %s", myctime(next)));
-
timer_add(&connect_timer, try_connections, 0, TT_ABSOLUTE, next);
}
continue;
}
- max_ping = IsRegistered(cptr) ? client_get_ping(cptr) :
- feature_int(FEAT_CONNECTTIMEOUT);
-
- Debug((DEBUG_DEBUG, "check_pings(%s)=status:%s limit: %d current: %d",
+ Debug((DEBUG_DEBUG, "check_pings(%s)=status:%s current: %d",
cli_name(cptr),
IsPingSent(cptr) ? "[Ping Sent]" : "[]",
- max_ping, (int)(CurrentTime - cli_lasttime(cptr))));
+ (int)(CurrentTime - cli_lasttime(cptr))));
+
+ /* 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)) {
+ assert(!IsServer(cptr));
+ max_ping = feature_int(FEAT_CONNECTTIMEOUT);
+ /* 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;
+ if (!IsRegistered(cptr)) {
+ /* 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;
+ }
+ }
+
+ max_ping = client_get_ping(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 unregisterd client and hasn't managed to register within
+ * 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.
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)) {
- assert(!IsServer(cptr));
- if ((CurrentTime-cli_firsttime(cptr) >= max_ping)) {
- /* Display message if they have sent a NICK and a USER but no
- * nospoof PONG.
- */
- if (*(cli_name(cptr)) && cli_user(cptr) && *(cli_user(cptr))->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 %s",
- feature_str(FEAT_URL_CLIENTS));
- }
- exit_client_msg(cptr,cptr,&me, "Registration Timeout");
- continue;
- } else {
- /* 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 (!IsPingSent(cptr))
{
- /* If we havent PINGed the connection and we havent heard from it in a
+ /* 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.
*/
SetPingSent(cptr);
if (IsUser(cptr))
sendrawto_one(cptr, MSG_PING " :%s", cli_name(&me));
else
- {
- char *asll_ts = militime_float(NULL);
- sendcmdto_one(&me, CMD_PING, cptr, "!%s %s %s", asll_ts,
- cli_name(cptr), asll_ts);
- }
+ sendcmdto_prio_one(&me, CMD_PING, cptr, ":%s", cli_name(&me));
}
expire = cli_lasttime(cptr) + max_ping * 2;
* @param[in,out] argv Command-lne arguments.
*/
static void parse_command_line(int argc, char** argv) {
- const char *options = "d:f:h:nktvx:";
+ 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; break;
+ 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;
#ifdef USE_DEVPOLL
printf("/dev/poll ");
#endif
+#ifdef USE_EPOLL
+ printf("epoll_*() ");
+#endif
#ifdef USE_POLL
printf("poll()");
#else
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] [-ntvk]\n");
- printf("\n -n -t\t Don't detach\n -v\t display version\n -k\t exit after checking config\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);
}
}
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 (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();
log_init(*argv);
set_nomem_handler(outofmemory);
- if (!init_string()) {
- log_write(LS_SYSTEM, L_CRIT, 0, "Failed to initialize string module");
- return 6;
- }
-
initload();
init_list();
init_hash();
initmsgtree();
initstats();
- init_resolver();
-
/* we need this for now, when we're modular this
should be removed -- hikari */
ircd_crypt_init();
}
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);
- daemon_init(thisServer.bootopt & BOOT_TTY);
if (check_pid()) {
Debug((DEBUG_FATAL, "Failed to acquire PID file lock after fork"));
exit(2);
cli_lasttime(&me) = cli_since(&me) = cli_firsttime(&me) = CurrentTime;
hAddClient(&me);
+ SetIPv6(&me);
write_pidfile();
init_counters();
projects / ircu2.10.12-pk.git / blobdiff