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unrealircd/src/s_misc.c
T
2002-06-30 16:03:38 +00:00

795 lines
21 KiB
C

/*
* Unreal Internet Relay Chat Daemon, src/s_misc.c
* Copyright (C) 1990 Jarkko Oikarinen and
* University of Oulu, Computing Center
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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.
*/
#ifndef CLEAN_COMPILE
static char sccsid[] =
"@(#)s_misc.c 2.42 3/1/94 (C) 1988 University of Oulu, \
Computing Center and Jarkko Oikarinen";
#endif
#ifndef _WIN32
#include <sys/time.h>
#endif
#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include <sys/stat.h>
#include <fcntl.h>
#if !defined(ULTRIX) && !defined(SGI) && \
!defined(__convex__) && !defined(_WIN32)
# include <sys/param.h>
#endif
#if defined(PCS) || defined(AIX) || defined(SVR3)
# include <time.h>
#endif
#ifdef HPUX
#include <unistd.h>
#endif
#ifdef _WIN32
# include <io.h>
#endif
#include "h.h"
#include "proto.h"
#include "channel.h"
#include <string.h>
#ifndef NO_FDLIST
extern fdlist serv_fdlist;
extern fdlist oper_fdlist;
extern float currentrate;
extern float currentrate2;
#endif
extern ircstats IRCstats;
extern char *me_hash;
static void exit_one_client(aClient *, aClient *, aClient *, char *, int);
extern void exit_one_client_in_split(aClient *, aClient *, aClient *,
char *);
static char *months[] = {
"January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"
};
static char *weekdays[] = {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday"
};
/*
* stats stuff
*/
struct stats ircst, *ircstp = &ircst;
char *date(time_t clock)
{
static char buf[80], plus;
struct tm *lt, *gm;
struct tm gmbuf;
int minswest;
if (!clock)
time(&clock);
gm = gmtime(&clock);
bcopy((char *)gm, (char *)&gmbuf, sizeof(gmbuf));
gm = &gmbuf;
lt = localtime(&clock);
#ifndef _WIN32
if (lt->tm_yday == gm->tm_yday)
minswest = (gm->tm_hour - lt->tm_hour) * 60 +
(gm->tm_min - lt->tm_min);
else if (lt->tm_yday > gm->tm_yday)
minswest = (gm->tm_hour - (lt->tm_hour + 24)) * 60;
else
minswest = ((gm->tm_hour + 24) - lt->tm_hour) * 60;
#else
minswest = (_timezone / 60);
#endif
plus = (minswest > 0) ? '-' : '+';
if (minswest < 0)
minswest = -minswest;
(void)ircsprintf(buf, "%s %s %d %d -- %02d:%02d %c%02d:%02d",
weekdays[lt->tm_wday], months[lt->tm_mon], lt->tm_mday,
1900 + lt->tm_year,
lt->tm_hour, lt->tm_min, plus, minswest / 60, minswest % 60);
return buf;
}
char *convert_time (time_t ltime)
{
unsigned long days = 0,hours = 0,minutes = 0,seconds = 0;
static char buffer[40];
*buffer = '\0';
seconds = ltime % 60;
ltime = (ltime - seconds) / 60;
minutes = ltime%60;
ltime = (ltime - minutes) / 60;
hours = ltime % 24;
days = (ltime - hours) / 24;
ircsprintf(buffer, "%ludays %luhours %luminutes %lusecs",
days, hours, minutes, seconds);
return(*buffer ? buffer : "");
}
/*
* Fixes a string so that the first white space found becomes an end of
* string marker (`\-`). returns the 'fixed' string or "*" if the string
* was NULL length or a NULL pointer.
*/
char *check_string(char *s)
{
static char star[2] = "*";
char *str = s;
if (BadPtr(s))
return star;
for (; *s; s++)
if (isspace(*s))
{
*s = '\0';
break;
}
return (BadPtr(str)) ? star : str;
}
char *make_user_host(char *name, char *host)
{
static char namebuf[USERLEN + HOSTLEN + 6];
char *s = namebuf;
bzero(namebuf, sizeof(namebuf));
name = check_string(name);
strncpyzt(s, name, USERLEN + 1);
s += strlen(s);
*s++ = '@';
host = check_string(host);
strncpyzt(s, host, HOSTLEN + 1);
s += strlen(s);
*s = '\0';
return (namebuf);
}
/*
* create a string of form "foo!bar@fubar" given foo, bar and fubar
* as the parameters. If NULL, they become "*".
*/
char *make_nick_user_host(char *nick, char *name, char *host)
{
static char namebuf[NICKLEN + USERLEN + HOSTLEN + 6];
char *s = namebuf;
bzero(namebuf, sizeof(namebuf));
nick = check_string(nick);
strncpyzt(namebuf, nick, NICKLEN + 1);
s += strlen(s);
*s++ = '!';
name = check_string(name);
strncpyzt(s, name, USERLEN + 1);
s += strlen(s);
*s++ = '@';
host = check_string(host);
strncpyzt(s, host, HOSTLEN + 1);
s += strlen(s);
*s = '\0';
return (namebuf);
}
/**
** myctime()
** This is like standard ctime()-function, but it zaps away
** the newline from the end of that string. Also, it takes
** the time value as parameter, instead of pointer to it.
** Note that it is necessary to copy the string to alternate
** buffer (who knows how ctime() implements it, maybe it statically
** has newline there and never 'refreshes' it -- zapping that
** might break things in other places...)
**
**/
char *myctime(time_t value)
{
static char buf[28];
char *p;
(void)strlcpy(buf, ctime(&value), sizeof buf);
if ((p = (char *)index(buf, '\n')) != NULL)
*p = '\0';
return buf;
}
/*
** check_registered_user is used to cancel message, if the
** originator is a server or not registered yet. In other
** words, passing this test, *MUST* guarantee that the
** sptr->user exists (not checked after this--let there
** be coredumps to catch bugs... this is intentional --msa ;)
**
** There is this nagging feeling... should this NOT_REGISTERED
** error really be sent to remote users? This happening means
** that remote servers have this user registered, althout this
** one has it not... Not really users fault... Perhaps this
** error message should be restricted to local clients and some
** other thing generated for remotes...
*/
int check_registered_user(aClient *sptr)
{
if (!IsRegisteredUser(sptr))
{
sendto_one(sptr, err_str(ERR_NOTREGISTERED), me.name, "*");
return -1;
}
return 0;
}
/*
** check_registered user cancels message, if 'x' is not
** registered (e.g. we don't know yet whether a server
** or user)
*/
int check_registered(aClient *sptr)
{
if (!IsRegistered(sptr))
{
sendto_one(sptr, err_str(ERR_NOTREGISTERED), me.name, "*");
return -1;
}
return 0;
}
/*
** get_client_name
** Return the name of the client for various tracking and
** admin purposes. The main purpose of this function is to
** return the "socket host" name of the client, if that
** differs from the advertised name (other than case).
** But, this can be used to any client structure.
**
** Returns:
** "name[user@ip#.port]" if 'showip' is true;
** "name[sockethost]", if name and sockhost are different and
** showip is false; else
** "name".
**
** NOTE 1:
** Watch out the allocation of "nbuf", if either sptr->name
** or sptr->sockhost gets changed into pointers instead of
** directly allocated within the structure...
**
** NOTE 2:
** Function return either a pointer to the structure (sptr) or
** to internal buffer (nbuf). *NEVER* use the returned pointer
** to modify what it points!!!
*/
char *get_client_name(aClient *sptr, int showip)
{
static char nbuf[HOSTLEN * 2 + USERLEN + 5];
if (MyConnect(sptr))
{
if (showip)
(void)ircsprintf(nbuf, "%s[%s@%s.%u]",
sptr->name,
(!(sptr->flags & FLAGS_GOTID)) ? "" :
sptr->username,
#ifdef INET6
inetntop(AF_INET6,
(char *)&sptr->ip, mydummy, MYDUMMY_SIZE),
#else
inetntoa((char *)&sptr->ip),
#endif
(unsigned int)sptr->port);
else
{
if (mycmp(sptr->name, sptr->sockhost))
(void)ircsprintf(nbuf, "%s[%s]",
sptr->name, sptr->sockhost);
else
return sptr->name;
}
return nbuf;
}
return sptr->name;
}
char *get_client_host(aClient *cptr)
{
static char nbuf[HOSTLEN * 2 + USERLEN + 5];
if (!MyConnect(cptr))
return cptr->name;
if (!cptr->hostp)
return get_client_name(cptr, FALSE);
(void)ircsprintf(nbuf, "%s[%-.*s@%-.*s]",
cptr->name, USERLEN,
(!(cptr->flags & FLAGS_GOTID)) ? "" : cptr->username,
HOSTLEN, cptr->hostp->h_name);
return nbuf;
}
/*
* Form sockhost such that if the host is of form user@host, only the host
* portion is copied.
*/
void get_sockhost(aClient *cptr, char *host)
{
char *s;
if ((s = (char *)index(host, '@')))
s++;
else
s = host;
strncpyzt(cptr->sockhost, s, sizeof(cptr->sockhost));
}
/*
** exit_client
** This is old "m_bye". Name changed, because this is not a
** protocol function, but a general server utility function.
**
** This function exits a client of *any* type (user, server, etc)
** from this server. Also, this generates all necessary prototol
** messages that this exit may cause.
**
** 1) If the client is a local client, then this implicitly
** exits all other clients depending on this connection (e.g.
** remote clients having 'from'-field that points to this.
**
** 2) If the client is a remote client, then only this is exited.
**
** For convenience, this function returns a suitable value for
** m_funtion return value:
**
** FLUSH_BUFFER if (cptr == sptr)
** 0 if (cptr != sptr)
*/
int exit_client(aClient *cptr, aClient *sptr, aClient *from, char *comment)
{
aClient *acptr;
aClient *next;
time_t on_for;
ConfigItem_listen *listen_conf;
static char comment1[HOSTLEN + HOSTLEN + 2];
static int recurse = 0;
if (MyConnect(sptr))
{
#ifndef NO_FDLIST
if (IsAnOper(sptr))
delfrom_fdlist(sptr->slot, &oper_fdlist);
if (IsServer(sptr))
delfrom_fdlist(sptr->slot, &serv_fdlist);
#endif
if (sptr->class)
sptr->class->clients--;
if (IsClient(sptr))
IRCstats.me_clients--;
if (IsServer(sptr))
{
IRCstats.me_servers--;
sptr->serv->conf->refcount--;
if (!sptr->serv->conf->refcount
&& sptr->serv->conf->flag.temporary)
{
/* Due for deletion */
DelListItem(sptr->serv->conf, conf_link);
link_cleanup(sptr->serv->conf);
MyFree(sptr->serv->conf);
}
}
if (sptr->listener)
if (sptr->listener->class)
{
listen_conf = (ConfigItem_listen *) sptr->listener->class;
listen_conf->clients--;
if (listen_conf->flag.temporary
&& (listen_conf->clients == 0))
{
/* Call listen cleanup */
listen_cleanup();
}
}
sptr->flags |= FLAGS_CLOSING;
if (IsPerson(sptr))
{
RunHook(HOOKTYPE_LOCAL_QUIT, sptr);
sendto_snomask(SNO_CLIENT,
"*** Notice -- Client exiting: %s (%s@%s) [%s]",
sptr->name, sptr->user->username,
sptr->user->realhost, comment);
sendto_conn_hcn
("*** Notice -- Client exiting: %s (%s@%s) [%s] [%s]",
sptr->name, sptr->user->username,
sptr->user->realhost, comment, Inet_ia2p(&sptr->ip));
/* Clean out list and watch structures -Donwulff */
hash_del_watch_list(sptr);
if (sptr->user && sptr->user->lopt)
{
free_str_list(sptr->user->lopt->yeslist);
free_str_list(sptr->user->lopt->nolist);
MyFree(sptr->user->lopt);
}
on_for = TStime() - sptr->firsttime;
ircd_log(LOG_CLIENT, "Disconnect - (%d:%d:%d) %s!%s@%s",
on_for / 3600, (on_for % 3600) / 60, on_for % 60,
sptr->name, sptr->user->username, sptr->user->realhost);
}
if (sptr->fd >= 0 && !IsConnecting(sptr))
{
if (cptr != NULL && sptr != cptr)
sendto_one(sptr,
"ERROR :Closing Link: %s %s (%s)",
get_client_name(sptr, FALSE), cptr->name,
comment);
else
sendto_one(sptr, "ERROR :Closing Link: %s (%s)",
get_client_name(sptr, FALSE), comment);
}
/*
** Currently only server connections can have
** depending remote clients here, but it does no
** harm to check for all local clients. In
** future some other clients than servers might
** have remotes too...
**
** Close the Client connection first and mark it
** so that no messages are attempted to send to it.
** (The following *must* make MyConnect(sptr) == FALSE!).
** It also makes sptr->from == NULL, thus it's unnecessary
** to test whether "sptr != acptr" in the following loops.
*/
close_connection(sptr);
}
/*
* Recurse down the client list and get rid of clients who are no
* longer connected to the network (from my point of view)
* Only do this expensive stuff if exited==server -Donwulff
*/
if (IsServer(sptr))
{
/*
* Is this right? Not recreateing the split message if
* we have been called recursivly? I hope so, cuz thats
* the only way I could make this give the right servers
* in the quit msg. -Cabal95
*/
if (cptr && !recurse)
{
/*
* We are sure as we RELY on sptr->srvptr->name and
* sptr->name to be less or equal to HOSTLEN
* Waste of strlcpy/strlcat here
*/
(void)strcpy(comment1, sptr->srvptr->name);
(void)strcat(comment1, " ");
(void)strcat(comment1, sptr->name);
}
/*
* First, remove the clients on the server itself.
*/
for (acptr = client; acptr; acptr = next)
{
next = acptr->next;
if (IsClient(acptr) && (acptr->srvptr == sptr))
exit_one_client(NULL, acptr,
&me, comment1, 1);
}
/*
* Now, go SQUIT off the servers which are down-stream of
* the one we just lost.
*/
recurse++;
for (acptr = client; acptr; acptr = next)
{
next = acptr->next;
if (IsServer(acptr) && acptr->srvptr == sptr) {
exit_client(sptr, acptr, /* RECURSION */
sptr, comment1);
RunHook(HOOKTYPE_SERVER_QUIT, acptr);
}
/*
* I am not masking SQUITS like I do QUITs. This
* is probobly something we could easily do, but
* how much savings is there really in something
* like that?
*/
#ifdef DEBUGMODE
else if (IsServer(acptr) &&
(find_server(acptr->serv->up, NULL) == sptr))
{
sendto_ops("WARNING, srvptr!=sptr but "
"find_server did! Server %s on "
"%s thought it was on %s while "
"loosing %s. Tell coding team.",
acptr->name, acptr->serv->up,
acptr->srvptr ? acptr->
srvptr->name : "<noserver>", sptr->name);
exit_client(sptr, acptr, sptr, comment1);
}
#endif
}
recurse--;
RunHook(HOOKTYPE_SERVER_QUIT, sptr);
}
/*
* Finally, clear out the server we lost itself
*/
exit_one_client(cptr, sptr, from, comment, recurse);
return cptr == sptr ? FLUSH_BUFFER : 0;
}
/*
** Exit one client, local or remote. Assuming all dependants have
** been already removed, and socket closed for local client.
*/
/* DANGER: Ugly hack follows. */
/* Yeah :/ */
static void exit_one_client(aClient *cptr, aClient *sptr, aClient *from, char *comment, int split)
{
aClient *acptr;
int i;
Link *lp;
Membership *mp;
/*
** For a server or user quitting, propagage the information to
** other servers (except to the one where is came from (cptr))
*/
if (IsMe(sptr))
{
sendto_ops("ERROR: tried to exit me! : %s", comment);
return; /* ...must *never* exit self!! */
}
else if (IsServer(sptr))
{
/*
** Old sendto_serv_but_one() call removed because we now
** need to send different names to different servers
** (domain name matching)
*/
for (i = 0; i <= LastSlot; i++)
{
if (!(acptr = local[i]) || !IsServer(acptr) || acptr == cptr || IsMe(acptr)
|| (DontSendQuit(acptr) && split))
continue;
/*
** SQUIT going "upstream". This is the remote
** squit still hunting for the target. Use prefixed
** form. "from" will be either the oper that issued
** the squit or some server along the path that
** didn't have this fix installed. --msa
*/
if (sptr->from == acptr)
{
sendto_one(acptr, ":%s SQUIT %s :%s", from->name, sptr->name, comment);
}
else
{
sendto_one(acptr, "SQUIT %s :%s", sptr->name, comment);
}
}
}
else if (!(IsPerson(sptr)))
/* ...this test is *dubious*, would need
** some thougth.. but for now it plugs a
** nasty hole in the server... --msa
*/
; /* Nothing */
else if (sptr->name[0]) /* ...just clean all others with QUIT... */
{
/*
** If this exit is generated from "m_kill", then there
** is no sense in sending the QUIT--KILL's have been
** sent instead.
*/
if ((sptr->flags & FLAGS_KILLED) == 0)
{
if (split == 0)
sendto_serv_butone_token
(cptr, sptr->name, MSG_QUIT, TOK_QUIT,
":%s", comment);
else
/*
* Then this is a split, only old (stupid)
* clients need to get quit messages
*/
sendto_serv_butone_quit(cptr, ":%s QUIT :%s",
sptr->name, comment);
}
/*
** If a person is on a channel, send a QUIT notice
** to every client (person) on the same channel (so
** that the client can show the "**signoff" message).
** (Note: The notice is to the local clients *only*)
*/
if (sptr->user)
{
sendto_common_channels(sptr, ":%s QUIT :%s",
sptr->name, comment);
if (!IsULine(sptr) && !split)
if (sptr->user->server != me_hash)
sendto_snomask(SNO_FCLIENT,
"*** Notice -- Client exiting at %s: %s!%s@%s (%s)",
sptr->user->server, sptr->name,
sptr->user->username,
sptr->user->realhost, comment);
while ((mp = sptr->user->channel))
remove_user_from_channel(sptr, mp->chptr);
/* Clean up invitefield */
while ((lp = sptr->user->invited))
del_invite(sptr, lp->value.chptr);
/* again, this is all that is needed */
/* Clean up silencefield */
while ((lp = sptr->user->silence))
(void)del_silence(sptr, lp->value.cp);
}
}
/* Remove sptr from the client list */
if (del_from_client_hash_table(sptr->name, sptr) != 1)
Debug((DEBUG_ERROR, "%#x !in tab %s[%s] %#x %#x %#x %d %d %#x",
sptr, sptr->name,
sptr->from ? sptr->from->sockhost : "??host",
sptr->from, sptr->next, sptr->prev, sptr->fd,
sptr->status, sptr->user));
if (IsRegisteredUser(sptr))
hash_check_watch(sptr, RPL_LOGOFF);
remove_client_from_list(sptr);
return;
}
void checklist(void)
{
aClient *acptr;
int i, j;
if (!(bootopt & BOOT_AUTODIE))
return;
for (j = i = 0; i <= LastSlot; i++)
if (!(acptr = local[i]))
continue;
else if (IsClient(acptr))
j++;
if (!j)
{
exit(0);
}
return;
}
void initstats(void)
{
bzero((char *)&ircst, sizeof(ircst));
}
void tstats(aClient *cptr, char *name)
{
aClient *acptr;
int i;
struct stats *sp;
struct stats tmp;
time_t now = TStime();
sp = &tmp;
bcopy((char *)ircstp, (char *)sp, sizeof(*sp));
for (i = 0; i <= LastSlot; i++)
{
if (!(acptr = local[i]))
continue;
if (IsServer(acptr))
{
sp->is_sbs += acptr->sendB;
sp->is_sbr += acptr->receiveB;
sp->is_sks += acptr->sendK;
sp->is_skr += acptr->receiveK;
sp->is_sti += now - acptr->firsttime;
sp->is_sv++;
if (sp->is_sbs > 1023)
{
sp->is_sks += (sp->is_sbs >> 10);
sp->is_sbs &= 0x3ff;
}
if (sp->is_sbr > 1023)
{
sp->is_skr += (sp->is_sbr >> 10);
sp->is_sbr &= 0x3ff;
}
}
else if (IsClient(acptr))
{
sp->is_cbs += acptr->sendB;
sp->is_cbr += acptr->receiveB;
sp->is_cks += acptr->sendK;
sp->is_ckr += acptr->receiveK;
sp->is_cti += now - acptr->firsttime;
sp->is_cl++;
if (sp->is_cbs > 1023)
{
sp->is_cks += (sp->is_cbs >> 10);
sp->is_cbs &= 0x3ff;
}
if (sp->is_cbr > 1023)
{
sp->is_ckr += (sp->is_cbr >> 10);
sp->is_cbr &= 0x3ff;
}
}
else if (IsUnknown(acptr))
sp->is_ni++;
}
sendto_one(cptr, ":%s %d %s :accepts %u refused %u",
me.name, RPL_STATSDEBUG, name, sp->is_ac, sp->is_ref);
sendto_one(cptr, ":%s %d %s :unknown commands %u prefixes %u",
me.name, RPL_STATSDEBUG, name, sp->is_unco, sp->is_unpf);
sendto_one(cptr, ":%s %d %s :nick collisions %u unknown closes %u",
me.name, RPL_STATSDEBUG, name, sp->is_kill, sp->is_ni);
sendto_one(cptr, ":%s %d %s :wrong direction %u empty %u",
me.name, RPL_STATSDEBUG, name, sp->is_wrdi, sp->is_empt);
sendto_one(cptr, ":%s %d %s :numerics seen %u mode fakes %u",
me.name, RPL_STATSDEBUG, name, sp->is_num, sp->is_fake);
sendto_one(cptr, ":%s %d %s :auth successes %u fails %u",
me.name, RPL_STATSDEBUG, name, sp->is_asuc, sp->is_abad);
sendto_one(cptr, ":%s %d %s :local connections %u udp packets %u",
me.name, RPL_STATSDEBUG, name, sp->is_loc, sp->is_udp);
sendto_one(cptr, ":%s %d %s :Client Server",
me.name, RPL_STATSDEBUG, name);
sendto_one(cptr, ":%s %d %s :connected %u %u",
me.name, RPL_STATSDEBUG, name, sp->is_cl, sp->is_sv);
sendto_one(cptr, ":%s %d %s :bytes sent %u.%uK %u.%uK",
me.name, RPL_STATSDEBUG, name,
sp->is_cks, sp->is_cbs, sp->is_sks, sp->is_sbs);
sendto_one(cptr, ":%s %d %s :bytes recv %u.%uK %u.%uK",
me.name, RPL_STATSDEBUG, name,
sp->is_ckr, sp->is_cbr, sp->is_skr, sp->is_sbr);
sendto_one(cptr, ":%s %d %s :time connected %u %u",
me.name, RPL_STATSDEBUG, name, sp->is_cti, sp->is_sti);
#ifndef NO_FDLIST
sendto_one(cptr,
":%s %d %s :incoming rate %0.2f kb/s - outgoing rate %0.2f kb/s",
me.name, RPL_STATSDEBUG, name, currentrate, currentrate2);
#endif
}