*
* $Id$
*/
-#include "ircd.h"
+
+
+/*----------------------------------------------------------------------------
+ * Platform Includes
+ *--------------------------------------------------------------------------*/
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <netdb.h>
+
+
+/*----------------------------------------------------------------------------
+ * ircu Includes
+ *--------------------------------------------------------------------------*/
+#include "config.h"
+
+#include "IPcheck.h"
#include "class.h"
#include "client.h"
#include "crule.h"
#include "hash.h"
-#include "ircd_alloc.h" /* set_nomem_handler */
+#include "ircd.h"
+#include "ircd_alloc.h"
#include "ircd_log.h"
+#include "ircd_reply.h"
#include "ircd_signal.h"
#include "ircd_string.h"
#include "jupe.h"
#include "list.h"
-#include "listener.h"
#include "match.h"
+#include "msg.h"
#include "numeric.h"
#include "numnicks.h"
#include "parse.h"
#include "s_debug.h"
#include "s_misc.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 <errno.h>
-#include <fcntl.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <netdb.h>
+/*----------------------------------------------------------------------------
+ * External stuff
+ *--------------------------------------------------------------------------*/
extern void init_counters(void);
-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
+/*----------------------------------------------------------------------------
+ * Constants / Enums
+ *--------------------------------------------------------------------------*/
+enum {
+ BOOT_DEBUG = 1,
+ BOOT_TTY = 2
+};
-static void server_reboot(const char* message)
-{
- int i;
- sendto_ops("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();
+/*----------------------------------------------------------------------------
+ * 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()
- for (i = 3; i < MAXCONNECTIONS; i++)
- close(i);
- if (!(bootopt & (BOOT_TTY | BOOT_DEBUG)))
- close(2);
- close(1);
- close(0);
+char *configfile = CPATH; // Server configuration file
+int debuglevel = -1; // Server debug level
+char *debugmode = ""; // Server debug level
+static char *dpath = DPATH;
- execv(SPATH, myargv);
+time_t nextconnect = 1; // time for next try_connections call
+time_t nextping = 1; // same as above for check_pings()
+
+static struct Daemon thisServer = { 0 }; // server process info
- /* 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]);
- Debug((DEBUG_FATAL, "Couldn't restart server \"%s\": %s",
- SPATH, (strerror(errno)) ? strerror(errno) : ""));
- exit(2);
-}
-void server_die(const char* message)
-{
+/*----------------------------------------------------------------------------
+ * API: server_die
+ *--------------------------------------------------------------------------*/
+void server_die(const char* message) {
ircd_log(L_CRIT, "Server terminating: %s", message);
- sendto_ops("Server terminating: %s", message);
+ sendto_opmask_butone(0, SNO_OLDSNO, "Server terminating: %s", message);
flush_connections(0);
- exit(2);
+ close_connections(1);
+ thisServer.running = 0;
}
-void server_restart(const char* message)
-{
+
+/*----------------------------------------------------------------------------
+ * API: server_restart
+ *--------------------------------------------------------------------------*/
+void server_restart(const char* message) {
static int restarting = 0;
ircd_log(L_WARNING, "Restarting Server: %s", message);
- if (restarting == 0) {
- restarting = 1;
- server_reboot(message);
- }
+ if (restarting)
+ 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)));
+
+ 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);
+
+ 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...
+ *--------------------------------------------------------------------------*/
+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;
- char buff[20];
- if ((fd = open(PPATH, O_CREAT | O_WRONLY, 0600)) == -1) {
- Debug((DEBUG_NOTICE, "Error opening pid file \"%s\": %s",
- PPATH, strerror(errno)));
+
+/*----------------------------------------------------------------------------
+ * write_pidfile
+ *--------------------------------------------------------------------------*/
+static void write_pidfile(void) {
+ FILE *pidf;
+
+ if (!(pidf = fopen(PPATH, "w+"))) {
+ Debug((DEBUG_NOTICE,
+ "Error opening pid file \"%s\": %s", PPATH, strerror(errno)));
return;
}
- memset(buff, 0, sizeof(buff));
- sprintf(buff, "%5d\n", getpid());
- if (write(fd, buff, strlen(buff)) == -1)
+
+ if (fprintf(pidf, "%5d\n", getpid()) < 5)
Debug((DEBUG_NOTICE, "Error writing to pid file %s", PPATH));
- close(fd);
-#endif
+
+ fclose(pidf);
}
-/*
+
+/*----------------------------------------------------------------------------
* 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)
-{
- struct ConfItem* aconf;
- struct Client* cptr;
- struct ConfItem** pconf;
- int connecting;
- int confrq;
- time_t next = 0;
- struct ConfClass* cltmp;
- struct ConfItem* cconf;
- strcut ConfItem* con_conf = NULL;
- struct Jupe* ajupe;
- unsigned int con_class = 0;
+ *--------------------------------------------------------------------------*/
+static time_t try_connections(void) {
+ struct ConfItem *aconf;
+ struct Client *cptr;
+ struct ConfItem **pconf;
+ int connecting;
+ int confrq;
+ time_t next = 0;
+ struct ConfClass *cltmp;
+ struct ConfItem *cconf;
+ struct ConfItem *con_conf = NULL;
+ struct Jupe *ajupe;
+ unsigned int con_class = 0;
connecting = FALSE;
Debug((DEBUG_NOTICE, "Connection check at : %s", myctime(CurrentTime)));
- for (aconf = GlobalConfList; aconf; aconf = aconf->next)
- {
+ for (aconf = GlobalConfList; aconf; aconf = aconf->next) {
/* Also when already connecting! (update holdtimes) --SRB */
if (!(aconf->status & CONF_SERVER) || aconf->port == 0)
continue;
if ((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 >;) ]
+ /* 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 >;) ]
*/
-
- if ((aconf->hold > CurrentTime))
- {
- if ((next > aconf->hold) || (next == 0))
- next = aconf->hold;
+ if (aconf->hold > CurrentTime && (next > aconf->hold || next == 0)) {
+ next = aconf->hold;
continue;
}
+ cltmp = aconf->confClass;
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?
+
+ /* Found a CONNECT config with port specified, scan clients and see if
+ * this server is already connected?
*/
cptr = FindServer(aconf->name);
if (!cptr && (Links(cltmp) < MaxLinks(cltmp)) &&
- (!connecting || (ConClass(cltmp) > con_class)))
- {
+ (!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))
+ for (cconf = GlobalConfList; cconf; cconf = cconf->next) {
+ if ((cconf->status & CONF_CRULE) && !match(cconf->host, aconf->name))
if (crule_eval(cconf->passwd))
break;
- if (!cconf)
- {
+ }
+ if (!cconf) {
con_class = ConClass(cltmp);
con_conf = aconf;
/* We connect only one at time... */
if ((next > aconf->hold) || (next == 0))
next = aconf->hold;
}
- if (connecting)
- {
- if (con_conf->next) /* are we already last? */
- {
+ 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)
*pconf = aconf->next;
(*pconf = con_conf)->next = 0;
}
+
if (connect_server(con_conf, 0, 0))
- sendto_ops("Connection to %s activated.", con_conf->name);
+ sendto_opmask_butone(0, SNO_OLDSNO, "Connection to %s activated.",
+ con_conf->name);
}
+
Debug((DEBUG_NOTICE, "Next connection check : %s", myctime(next)));
- return (next);
+ return(next);
}
-static time_t check_pings(void)
-{
- struct Client *cptr;
- int ping = 0;
- int i;
- time_t oldest = CurrentTime + PINGFREQUENCY;
- time_t timeout;
- for (i = 0; i <= HighestFd; i++) {
- if (!(cptr = LocalClientArray[i]))
+/*----------------------------------------------------------------------------
+ * 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;
+ int max_ping = 0;
+ int i;
+
+ /* 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, cptr->info);
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
- */
- 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.
+ max_ping = IsRegistered(cptr) ? get_client_ping(cptr) : 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)));
+
+
+ /* Ok, the thing that will happen most frequently, is that someone will
+ * have sent something recently. Cover this first for speed.
*/
- if (((CurrentTime - cptr->lasttime) >= (2 * ping) && (cptr->flags & FLAGS_PINGSENT)) ||
- (!IsRegistered(cptr) && !IsHandshake(cptr) && (CurrentTime - cptr->firsttime) >= ping))
- {
+ if (CurrentTime-cptr->lasttime < max_ping) {
+ expire = cptr->lasttime + 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_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", cptr->name);
+ 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.
+
+ /* 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.
*/
- cptr->flags |= FLAGS_PINGSENT;
- /*
- * not nice but does the job
+ 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");
+ continue;
+ }
+
+ if (!(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->lasttime = CurrentTime - ping;
+ cptr->flags |= FLAGS_PINGSENT;
+
+ /* If we're late in noticing don't hold it against them :) */
+ cptr->lasttime = CurrentTime - max_ping;
+
if (IsUser(cptr))
- sendto_one(cptr, "PING :%s", me.name);
+ sendrawto_one(cptr, MSG_PING " :%s", me.name);
else
- sendto_one(cptr, "%s " TOK_PING " :%s", NumServ(&me), me.name);
+ sendcmdto_one(&me, CMD_PING, cptr, ":%s", me.name);
}
-ping_timeout:
- timeout = cptr->lasttime + ping;
- while (timeout <= CurrentTime)
- timeout += ping;
- if (timeout < oldest)
- oldest = timeout;
+
+ expire = cptr->lasttime + 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));
+
+ assert(next_check >= CurrentTime);
+
+ Debug((DEBUG_DEBUG, "[%i] check_pings() again in %is",
+ CurrentTime, next_check-CurrentTime));
+
+ return next_check;
+}
+
+
+/*----------------------------------------------------------------------------
+ * parse_command_line
+ *--------------------------------------------------------------------------*/
+static void parse_command_line(int argc, char** argv) {
+ const char *options = "d:f:h:ntvx:";
+ int opt;
+
+ if (thisServer.euid != thisServer.uid)
+ setuid(thisServer.uid);
- return (oldest);
+ /* Do we really need to santiy check the non-NULLness of optarg? That's
+ * getopt()'s job... Removing those... -zs
+ */
+ while ((opt = getopt(argc, argv, options)) != EOF)
+ switch (opt) {
+ 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 'x':
+ debuglevel = atoi(optarg);
+ if (debuglevel < 0)
+ debuglevel = 0;
+ debugmode = optarg;
+ thisServer.bootopt |= BOOT_DEBUG;
+ 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");
+ exit(1);
+ }
}
-/*
- * bad_command
- *
- * This is called when the commandline is not acceptable.
- * Give error message and exit without starting anything.
- */
-static int bad_command(void)
-{
- printf("Usage: ircd %s[-h servername] [-x loglevel] [-t]\n",
-#ifdef CMDLINE_CONFIG
- "[-f config] "
-#else
- ""
+
+/*----------------------------------------------------------------------------
+ * daemon_init
+ *--------------------------------------------------------------------------*/
+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;
+
+ if (fork())
+ exit(0);
+
+#ifdef TIOCNOTTY
+ {
+ int fd;
+ if ((fd = open("/dev/tty", O_RDWR)) > -1) {
+ ioctl(fd, TIOCNOTTY, 0);
+ close(fd);
+ }
+ }
#endif
- );
- printf("Server not started\n\n");
- return (-1);
+
+ setsid();
}
-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);
+/*----------------------------------------------------------------------------
+ * event_loop
+ *--------------------------------------------------------------------------*/
+static void event_loop(void) {
+ time_t nextdnscheck = 0;
+ time_t delay = 0;
- /*
- * sanity check
- */
- if (MAXCONNECTIONS < 64 || MAXCONNECTIONS > 256000) {
- fprintf(stderr, "%s: MAXCONNECTIONS insane: %d\n", *argv, MAXCONNECTIONS);
- return 2;
- }
+ 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));
+
+ 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();
- uid = getuid();
- euid = geteuid();
-#ifdef PROFIL
- monstartup(0, etext);
- moncontrol(1);
- signal(SIGUSR1, s_monitor);
-#endif
+ /* timeout pending queries that haven't been responded to */
+ timeout_auth_queries(CurrentTime);
-#ifdef CHROOTDIR
- if (chdir(DPATH))
- {
- fprintf(stderr, "Fail: Cannot chdir(%s): %s\n", DPATH, (strerror(errno)) ? strerror(errno) : "");
- exit(2);
- }
- if (chroot(DPATH))
- {
- fprintf(stderr, "Fail: Cannot chroot(%s): %s\n", DPATH, (strerror(errno)) ? strerror(errno) : "");
- exit(5);
+ ip_registry_expire();
+
+ if (GlobalRehashFlag) {
+ rehash(&me, 1);
+ GlobalRehashFlag = 0;
+ }
+
+ if (GlobalRestartFlag)
+ server_restart("caught signal: SIGINT");
}
- dpath = "/";
-#endif /*CHROOTDIR */
+}
- myargv = argv;
- umask(077); /* better safe than sorry --SRB */
- memset(&me, 0, sizeof(me));
- me.fd = -1;
-#if 0
-#ifdef VIRTUAL_HOST
- memset(&vserv, 0, sizeof(vserv));
-#endif
+/*----------------------------------------------------------------------------
+ * check_file_access: random helper function to make sure that a file is
+ * accessible in a certain way, and complain 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
- setup_signals();
- initload();
+ return 0;
+}
+
+/*----------------------------------------------------------------------------
+ * set_core_limit
+ *--------------------------------------------------------------------------*/
#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
- if (getrlimit(RLIMIT_CORE, &corelim))
- {
- fprintf(stderr, "Read of rlimit core size failed: %s\n", (strerror(errno) ? strerror(errno) : "");
+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) ? strerror(errno) : "");
+ 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;
- }
- }
- if (chdir(dpath))
- {
- fprintf(stderr, "Fail: Cannot chdir(%s): %s\n", dpath, (strerror(errno)) ? strerror(errno) : "");
- exit(2);
+/*----------------------------------------------------------------------------
+ * 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;
}
-
-#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);
+ if (chroot(DPATH)) {
+ fprintf(stderr, "Fail: Cannot chroot(%s): %s\n", DPATH, strerror(errno));
+ return 0;
}
+ dpath = "/";
+ return 1;
+}
#endif
-#if !defined(CHROOTDIR) || (defined(IRC_UID) && defined(IRC_GID))
- if (euid != uid)
- {
- setuid(uid);
- setuid(euid);
- }
- if (0 == getuid())
- {
-#if defined(IRC_UID) && defined(IRC_GID)
-
- /* 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);
+/*----------------------------------------------------------------------------
+ * set_userid_if_needed()
+ *--------------------------------------------------------------------------*/
+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");
+ return 0;
}
-#endif /*CHROOTDIR/UID/GID */
- if (argc > 0)
- return bad_command(); /* This should exit out */
+ return 1;
+}
+
+
+/*----------------------------------------------------------------------------
+ * 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
+ *--------------------------------------------------------------------------*/
+int main(int argc, char **argv) {
+ CurrentTime = time(NULL);
+
+ thisServer.argc = argc;
+ thisServer.argv = argv;
+ thisServer.uid = getuid();
+ thisServer.euid = geteuid();
- /* 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
- }
- }
- }
- }
- if (c)
- {
- fprintf(stderr, "Check on %cPATH (%s) failed: %s\n",
- c, path, (strerror(errno)) ? 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");
+ if (!set_chroot_environment())
+ exit(1);
#endif
- exit(2);
- }
+
+#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
+ set_core_limit();
+#endif
+
+ umask(077); /* better safe than sorry --SRB */
+ memset(&me, 0, sizeof(me));
+ me.fd = -1;
+
+ setup_signals();
+ initload();
+
+ parse_command_line(argc, argv);
+
+ if (chdir(dpath)) {
+ fprintf(stderr, "Fail: Cannot chdir(%s): %s\n", dpath, strerror(errno));
+ exit(2);
}
+ if (!set_userid_if_needed())
+ exit(3);
+
+ /* Check paths for accessibility */
+ if (!check_file_access(SPATH, 'S', X_OK) ||
+ !check_file_access(CPATH, 'C', R_OK) ||
+ !check_file_access(MPATH, 'M', R_OK) ||
+ !check_file_access(RPATH, 'R', R_OK))
+ exit(4);
+
+#ifdef DEBUG
+ if (!check_file_access(LPATH, 'L', W_OK))
+ exit(5);
+#endif
+
init_list();
hash_init();
initclass();
initwhowas();
initmsgtree();
initstats();
- open_debugfile();
- init_sys();
- set_nomem_handler(outofmemory);
- me.fd = -1;
+ debug_init(thisServer.bootopt & BOOT_TTY);
+ daemon_init(thisServer.bootopt & BOOT_TTY);
+
+ set_nomem_handler(outofmemory);
+ init_resolver();
- open_log(myargv[0]);
+ open_log(*argv);
- if (initconf(bootopt) == -1) {
- Debug((DEBUG_FATAL, "Failed in reading configuration file %s", configfile));
+ if (!conf_init()) {
+ Debug((DEBUG_FATAL, "Failed to read configuration file %s", configfile));
printf("Couldn't open configuration file %s\n", configfile);
- exit(2);
+ exit(6);
}
+
if (!init_server_identity()) {
Debug((DEBUG_FATAL, "Failed to initialize server identity"));
- exit(2);
+ exit(7);
}
+
uping_init();
read_tlines();
- rmotd = read_motd(RPATH);
- motd = read_motd(MPATH);
+
+ rmotd = read_motd(RPATH);
+ motd = read_motd(MPATH);
CurrentTime = time(NULL);
- me.from = &me;
+ me.from = &me;
+
SetMe(&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;
+
+ 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;
SetYXXCapacity(&me, MAXCLIENTS);
me.lasttime = me.since = me.firsttime = CurrentTime;
+
hAddClient(&me);
check_class();
write_pidfile();
-
init_counters();
Debug((DEBUG_NOTICE, "Server ready..."));
ircd_log(L_NOTICE, "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);
+ event_loop();
- Debug((DEBUG_DEBUG, "Got message(s)"));
+ return 0;
+}
- /*
- * ...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);
- if (GlobalRehashFlag) {
- rehash(&me, 1);
- GlobalRehashFlag = 0;
- }
- if (GlobalRestartFlag)
- server_restart("caught signal: SIGINT");
- }
-}
projects / ircu2.10.12-pk.git / blobdiff