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unrealircd/src/s_user.c
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/*
* Unreal Internet Relay Chat Daemon, src/s_user.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_user.c 2.74 2/8/94 (C) 1988 University of Oulu, \
Computing Center and Jarkko Oikarinen";
#endif
#include "config.h"
#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "msg.h"
#include "channel.h"
#include <time.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#include <io.h>
#endif
#include <fcntl.h>
#include "h.h"
#include "proto.h"
#ifdef STRIPBADWORDS
#include "badwords.h"
#endif
#ifdef _WIN32
#include "version.h"
#endif
void send_umode_out(aClient *, aClient *, long);
void send_umode_out_nickv2(aClient *, aClient *, long);
void send_umode(aClient *, aClient *, long, long, char *);
void set_snomask(aClient *, char *);
void create_snomask(aClient *, anUser *, char *);
extern int short_motd(aClient *sptr);
extern aChannel *get_channel(aClient *cptr, char *chname, int flag);
/* static Link *is_banned(aClient *, aChannel *); */
MODVAR int dontspread = 0;
extern char *me_hash;
extern char backupbuf[];
static char buf[BUFSIZE];
void iNAH_host(aClient *sptr, char *host)
{
if (!sptr->user)
return;
if (UHOST_ALLOWED == UHALLOW_REJOIN)
rejoin_doparts(sptr);
if (sptr->user->virthost)
{
MyFree(sptr->user->virthost);
sptr->user->virthost = NULL;
}
sptr->user->virthost = strdup(host);
if (MyConnect(sptr))
sendto_serv_butone_token(&me, sptr->name, MSG_SETHOST,
TOK_SETHOST, "%s", sptr->user->virthost);
sptr->umodes |= UMODE_SETHOST;
if (UHOST_ALLOWED == UHALLOW_REJOIN)
rejoin_dojoinandmode(sptr);
}
long set_usermode(char *umode)
{
int newumode;
int what;
char *m;
int i;
newumode = 0;
what = MODE_ADD;
for (m = umode; *m; m++)
switch (*m)
{
case '+':
what = MODE_ADD;
break;
case '-':
what = MODE_DEL;
break;
case ' ':
case '\n':
case '\r':
case '\t':
break;
default:
for (i = 0; i <= Usermode_highest; i++)
{
if (!Usermode_Table[i].flag)
continue;
if (*m == Usermode_Table[i].flag)
{
if (what == MODE_ADD)
newumode |= Usermode_Table[i].mode;
else
newumode &= ~Usermode_Table[i].mode;
}
}
}
return (newumode);
}
/*
** m_functions execute protocol messages on this server:
**
** cptr is always NON-NULL, pointing to a *LOCAL* client
** structure (with an open socket connected!). This
** identifies the physical socket where the message
** originated (or which caused the m_function to be
** executed--some m_functions may call others...).
**
** sptr is the source of the message, defined by the
** prefix part of the message if present. If not
** or prefix not found, then sptr==cptr.
**
** (!IsServer(cptr)) => (cptr == sptr), because
** prefixes are taken *only* from servers...
**
** (IsServer(cptr))
** (sptr == cptr) => the message didn't
** have the prefix.
**
** (sptr != cptr && IsServer(sptr) means
** the prefix specified servername. (?)
**
** (sptr != cptr && !IsServer(sptr) means
** that message originated from a remote
** user (not local).
**
** combining
**
** (!IsServer(sptr)) means that, sptr can safely
** taken as defining the target structure of the
** message in this server.
**
** *Always* true (if 'parse' and others are working correct):
**
** 1) sptr->from == cptr (note: cptr->from == cptr)
**
** 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
** *cannot* be a local connection, unless it's
** actually cptr!). [MyConnect(x) should probably
** be defined as (x == x->from) --msa ]
**
** parc number of variable parameter strings (if zero,
** parv is allowed to be NULL)
**
** parv a NULL terminated list of parameter pointers,
**
** parv[0], sender (prefix string), if not present
** this points to an empty string.
** parv[1]...parv[parc-1]
** pointers to additional parameters
** parv[parc] == NULL, *always*
**
** note: it is guaranteed that parv[0]..parv[parc-1] are all
** non-NULL pointers.
*/
/* #ifndef NO_FDLIST
** extern fdlist oper_fdlist;
** #endif
*/
/* Taken from xchat by Peter Zelezny
* changed very slightly by codemastr
*/
unsigned char *StripColors(unsigned char *text) {
int nc = 0, col = 0, i = 0, len = strlen(text);
static unsigned char new_str[4096];
while (len > 0) {
if ((col && isdigit(*text) && nc < 2) || (col && *text == ',' && nc < 3)) {
nc++;
if (*text == ',')
nc = 0;
}
else {
if (col)
col = 0;
if (*text == '\003') {
col = 1;
nc = 0;
}
else {
new_str[i] = *text;
i++;
}
}
text++;
len--;
}
new_str[i] = 0;
return new_str;
}
/* strip color, bold, underline, and reverse codes from a string */
const char *StripControlCodes(unsigned char *text)
{
int nc = 0, col = 0, i = 0, len = strlen(text);
static unsigned char new_str[4096];
while (len > 0)
{
if ( col && ((isdigit(*text) && nc < 2) || (*text == ',' && nc < 3)))
{
nc++;
if (*text == ',')
nc = 0;
}
else
{
if (col)
col = 0;
switch (*text)
{
case 3:
/* color */
col = 1;
nc = 0;
break;
case 2:
/* bold */
break;
case 31:
/* underline */
break;
case 22:
/* reverse */
break;
case 15:
/* plain */
break;
default:
new_str[i] = *text;
i++;
break;
}
}
text++;
len--;
}
new_str[i] = 0;
return new_str;
}
MODVAR char umodestring[UMODETABLESZ+1];
/*
** next_client
** Local function to find the next matching client. The search
** can be continued from the specified client entry. Normal
** usage loop is:
**
** for (x = client; x = next_client(x,mask); x = x->next)
** HandleMatchingClient;
**
*/
aClient *next_client(aClient *next, char *ch)
{
aClient *tmp = next;
next = find_client(ch, tmp);
if (tmp && tmp->prev == next)
return NULL;
if (next != tmp)
return next;
for (; next; next = next->next)
{
if (!match(ch, next->name) || !match(next->name, ch))
break;
}
return next;
}
/*
** hunt_server
**
** Do the basic thing in delivering the message (command)
** across the relays to the specific server (server) for
** actions.
**
** Note: The command is a format string and *MUST* be
** of prefixed style (e.g. ":%s COMMAND %s ...").
** Command can have only max 8 parameters.
**
** server parv[server] is the parameter identifying the
** target server.
**
** *WARNING*
** parv[server] is replaced with the pointer to the
** real servername from the matched client (I'm lazy
** now --msa).
**
** returns: (see #defines)
*/
int hunt_server(aClient *cptr, aClient *sptr, char *command, int server, int parc, char *parv[])
{
aClient *acptr;
/*
** Assume it's me, if no server
*/
if (parc <= server || BadPtr(parv[server]) ||
match(me.name, parv[server]) == 0 ||
match(parv[server], me.name) == 0)
return (HUNTED_ISME);
/*
** These are to pickup matches that would cause the following
** message to go in the wrong direction while doing quick fast
** non-matching lookups.
*/
if ((acptr = find_client(parv[server], NULL)))
if (acptr->from == sptr->from && !MyConnect(acptr))
acptr = NULL;
if (!acptr && (acptr = find_server_quick(parv[server])))
if (acptr->from == sptr->from && !MyConnect(acptr))
acptr = NULL;
if (!acptr)
for (acptr = client, (void)collapse(parv[server]);
(acptr = next_client(acptr, parv[server]));
acptr = acptr->next)
{
if (acptr->from == sptr->from && !MyConnect(acptr))
continue;
/*
* Fix to prevent looping in case the parameter for
* some reason happens to match someone from the from
* link --jto
*/
if (IsRegistered(acptr) && (acptr != cptr))
break;
}
/* Fix for unregistered client receiving msgs: */
if (acptr && MyConnect(acptr) && IsUnknown(acptr))
acptr = NULL;
if (acptr)
{
if (IsMe(acptr) || MyClient(acptr))
return HUNTED_ISME;
if (match(acptr->name, parv[server]))
parv[server] = acptr->name;
sendto_one(acptr, command, parv[0],
parv[1], parv[2], parv[3], parv[4],
parv[5], parv[6], parv[7], parv[8]);
return (HUNTED_PASS);
}
sendto_one(sptr, err_str(ERR_NOSUCHSERVER), me.name,
parv[0], parv[server]);
return (HUNTED_NOSUCH);
}
/*
** hunt_server_token
**
** Do the basic thing in delivering the message (command)
** across the relays to the specific server (server) for
** actions. This works like hunt_server, except if the
** server supports tokens, the token is used.
**
** command specifies the command name
** token specifies the token name
** params is a formated parameter string
** server parv[server] is the parameter identifying the
** target server.
**
** *WARNING*
** parv[server] is replaced with the pointer to the
** real servername from the matched client (I'm lazy
** now --msa).
**
** returns: (see #defines)
*/
int hunt_server_token(aClient *cptr, aClient *sptr, char *command, char *token, char
*params, int server, int parc, char *parv[])
{
aClient *acptr;
/*
** Assume it's me, if no server
*/
if (parc <= server || BadPtr(parv[server]) ||
match(me.name, parv[server]) == 0 ||
match(parv[server], me.name) == 0)
return (HUNTED_ISME);
/*
** These are to pickup matches that would cause the following
** message to go in the wrong direction while doing quick fast
** non-matching lookups.
*/
if ((acptr = find_client(parv[server], NULL)))
if (acptr->from == sptr->from && !MyConnect(acptr))
acptr = NULL;
if (!acptr && (acptr = find_server_quick(parv[server])))
if (acptr->from == sptr->from && !MyConnect(acptr))
acptr = NULL;
if (!acptr)
for (acptr = client, (void)collapse(parv[server]);
(acptr = next_client(acptr, parv[server]));
acptr = acptr->next)
{
if (acptr->from == sptr->from && !MyConnect(acptr))
continue;
/*
* Fix to prevent looping in case the parameter for
* some reason happens to match someone from the from
* link --jto
*/
if (IsRegistered(acptr) && (acptr != cptr))
break;
}
/* Fix for unregistered client receiving msgs: */
if (acptr && MyConnect(acptr) && IsUnknown(acptr))
acptr = NULL;
if (acptr)
{
char buff[1024];
if (IsMe(acptr) || MyClient(acptr))
return HUNTED_ISME;
if (match(acptr->name, parv[server]))
parv[server] = acptr->name;
if (IsToken(acptr->from)) {
sprintf(buff, ":%s %s ", parv[0], token);
strcat(buff, params);
sendto_one(acptr, buff, parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]);
}
else {
sprintf(buff, ":%s %s ", parv[0], command);
strcat(buff, params);
sendto_one(acptr, buff, parv[1], parv[2],
parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]);
}
return (HUNTED_PASS);
}
sendto_one(sptr, err_str(ERR_NOSUCHSERVER), me.name,
parv[0], parv[server]);
return (HUNTED_NOSUCH);
}
int hunt_server_token_quiet(aClient *cptr, aClient *sptr, char *command, char *token, char
*params, int server, int parc, char *parv[])
{
aClient *acptr;
/*
** Assume it's me, if no server
*/
if (parc <= server || BadPtr(parv[server]) ||
match(me.name, parv[server]) == 0 ||
match(parv[server], me.name) == 0)
return (HUNTED_ISME);
/*
** These are to pickup matches that would cause the following
** message to go in the wrong direction while doing quick fast
** non-matching lookups.
*/
if ((acptr = find_client(parv[server], NULL)))
if (acptr->from == sptr->from && !MyConnect(acptr))
acptr = NULL;
if (!acptr && (acptr = find_server_quick(parv[server])))
if (acptr->from == sptr->from && !MyConnect(acptr))
acptr = NULL;
if (!acptr)
for (acptr = client, (void)collapse(parv[server]);
(acptr = next_client(acptr, parv[server]));
acptr = acptr->next)
{
if (acptr->from == sptr->from && !MyConnect(acptr))
continue;
/*
* Fix to prevent looping in case the parameter for
* some reason happens to match someone from the from
* link --jto
*/
if (IsRegistered(acptr) && (acptr != cptr))
break;
}
if (acptr)
{
char buff[1024];
if (IsMe(acptr) || MyClient(acptr))
return HUNTED_ISME;
if (match(acptr->name, parv[server]))
parv[server] = acptr->name;
if (IsToken(acptr->from)) {
sprintf(buff, ":%s %s ", parv[0], token);
strcat(buff, params);
sendto_one(acptr, buff, parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]);
}
else {
sprintf(buff, ":%s %s ", parv[0], command);
strcat(buff, params);
sendto_one(acptr, buff, parv[1], parv[2],
parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]);
}
return (HUNTED_PASS);
}
return (HUNTED_NOSUCH);
}
/*
** check_for_target_limit
**
** Return Values:
** True(1) == too many targets are addressed
** False(0) == ok to send message
**
*/
int check_for_target_limit(aClient *sptr, void *target, const char *name)
{
#ifndef _WIN32 /* This is not windows compatible */
u_char *p;
#ifndef __alpha
u_int tmp = ((u_int)target & 0xffff00) >> 8;
#else
u_int tmp = ((u_long)target & 0xffff00) >> 8;
#endif
u_char hash = (tmp * tmp) >> 12;
if (IsAnOper(sptr))
return 0;
if (sptr->targets[0] == hash)
return 0;
for (p = sptr->targets; p < &sptr->targets[MAXTARGETS - 1];)
if (*++p == hash)
{
/* move targethash to first position... */
memmove(&sptr->targets[1], &sptr->targets[0],
p - sptr->targets);
sptr->targets[0] = hash;
return 0;
}
if (TStime() < sptr->nexttarget)
{
sptr->since += TARGET_DELAY; /* lag them up */
sptr->nexttarget += TARGET_DELAY;
sendto_one(sptr, err_str(ERR_TARGETTOOFAST), me.name, sptr->name,
name, sptr->nexttarget - TStime());
return 1;
}
if (TStime() > sptr->nexttarget + TARGET_DELAY*MAXTARGETS)
{
sptr->nexttarget = TStime() - TARGET_DELAY*MAXTARGETS;
}
sptr->nexttarget += TARGET_DELAY;
memmove(&sptr->targets[1], &sptr->targets[0], MAXTARGETS - 1);
sptr->targets[0] = hash;
#endif
return 0;
}
/*
** 'do_nick_name' ensures that the given parameter (nick) is
** really a proper string for a nickname (note, the 'nick'
** may be modified in the process...)
**
** RETURNS the length of the final NICKNAME (0, if
** nickname is illegal)
**
** Nickname characters are in range
** 'A'..'}', '_', '-', '0'..'9'
** anything outside the above set will terminate nickname.
** In addition, the first character cannot be '-'
** or a Digit.
**
** Note:
** '~'-character should be allowed, but
** a change should be global, some confusion would
** result if only few servers allowed it...
*/
#if defined(CHINESE_NICK) || defined(JAPANESE_NICK)
/* Chinese Nick Verification Code - Added by RexHsu on 08/09/00 (beta2)
* Now Support All GBK Words,Thanks to Mr.WebBar <climb@guomai.sh.cn>!
* Special Char Bugs Fixed by RexHsu 09/01/00 I dont know whether it is
* okay now?May I am right ;p
* Thanks dilly for providing me Japanese code range!
* Now I am meeting a nickname conflicting problem....
*
* GBK Libary Reference:
* 1. GBK2312非汉字符号区(A1A1----A9FE)
* 2. GBK2312汉字区(B0A1----F7FE)
* 3. GBK扩充汉字区(8140----A0FE)
* 4. GBK扩充汉字区(AA40----FEA0)
* 5. GBK扩充非汉字区(A840----A9A0)
* 6. 日文平假名编码区(a4a1-a4f3) -->work correctly?maybe...
* 7. 日文片假名编码区(a5a1-a5f7) -->work correctly?maybe...
* 8. 韩文编码区(xxxx-yyyy)
*/
int isvalidChinese(const unsigned char c1, const unsigned char c2)
{
const unsigned int GBK_S = 0xb0a1;
const unsigned int GBK_E = 0xf7fe;
const unsigned int GBK_2_S = 0x8140;
const unsigned int GBK_2_E = 0xa0fe;
const unsigned int GBK_3_S = 0xaa40;
const unsigned int GBK_3_E = 0xfea0;
const unsigned int JPN_PING_S = 0xa4a1;
const unsigned int JPN_PING_E = 0xa4f3;
const unsigned int JPN_PIAN_S = 0xa5a1;
const unsigned int JPN_PIAN_E = 0xa5f7;
unsigned int AWord = c1 * 256 + c2;
#if defined(CHINESE_NICK) && defined(JAPANESE_NICK)
return (AWord >= GBK_S && AWord <= GBK_E || AWord >= GBK_2_S
&& AWord <= GBK_2_E || AWord >= JPN_PING_S && AWord <= JPN_PING_E
|| AWord >= JPN_PIAN_S && AWord <= JPN_PIAN_E) ? 1 : 0;
#endif
#if defined(CHINESE_NICK) && !defined(JAPANESE_NICK)
return (AWord >= GBK_S && AWord <= GBK_E || AWord >= GBK_2_S
&& AWord <= GBK_2_E ? 1 : 0);
#endif
#if !defined(CHINESE_NICK) && defined(JAPANESE_NICK)
return (AWord >= JPN_PING_S && AWord <= JPN_PING_E
|| AWord >= JPN_PIAN_S && AWord <= JPN_PIAN_E) ? 1 : 0;
#endif
}
/* Chinese Nick Supporting Code (Switch Mode) - Modified by RexHsu on 08/09/00 */
int do_nick_name(char *pnick)
{
unsigned char *ch;
unsigned char *nick = pnick;
int firstChineseChar = 0;
char lastChar;
if (*nick == '-' || isdigit(*nick)) /* first character in [0..9-] */
return 0;
for (ch = nick; *ch && (ch - nick) < NICKLEN; ch++)
{
if ((!isvalid(*ch) && !((*ch) & 0x80)) || isspace(*ch)
|| (*ch) == '@' || (*ch) == '!' || (*ch) == ':'
|| (*ch) == ' ')
break;
if (firstChineseChar)
{
if (!isvalidChinese(lastChar, *ch))
break;
firstChineseChar = 0;
}
else if ((*ch) & 0x80)
firstChineseChar = 1;
lastChar = *ch;
}
if (firstChineseChar)
ch--;
*ch = '\0';
return (ch - nick);
}
#else
int do_nick_name(char *nick)
{
char *ch;
if (*nick == '-' || isdigit(*nick)) /* first character in [0..9-] */
return 0;
for (ch = nick; *ch && (ch - nick) < NICKLEN; ch++)
if (!isvalid(*ch) || isspace(*ch))
break;
*ch = '\0';
return (ch - nick);
}
#endif
/*
** canonize
**
** reduce a string of duplicate list entries to contain only the unique
** items. Unavoidably O(n^2).
*/
extern char *canonize(char *buffer)
{
static char cbuf[BUFSIZ];
char *s, *t, *cp = cbuf;
int l = 0;
char *p = NULL, *p2;
*cp = '\0';
for (s = strtoken(&p, buffer, ","); s; s = strtoken(&p, NULL, ","))
{
if (l)
{
for (p2 = NULL, t = strtoken(&p2, cbuf, ","); t;
t = strtoken(&p2, NULL, ","))
if (!mycmp(s, t))
break;
else if (p2)
p2[-1] = ',';
}
else
t = NULL;
if (!t)
{
if (l)
*(cp - 1) = ',';
else
l = 1;
(void)strcpy(cp, s);
if (p)
cp += (p - s);
}
else if (p2)
p2[-1] = ',';
}
return cbuf;
}
extern MODVAR char cmodestring[512];
/*
** register_user
** This function is called when both NICK and USER messages
** have been accepted for the client, in whatever order. Only
** after this the USER message is propagated.
**
** NICK's must be propagated at once when received, although
** it would be better to delay them too until full info is
** available. Doing it is not so simple though, would have
** to implement the following:
**
** 1) user telnets in and gives only "NICK foobar" and waits
** 2) another user far away logs in normally with the nick
** "foobar" (quite legal, as this server didn't propagate
** it).
** 3) now this server gets nick "foobar" from outside, but
** has already the same defined locally. Current server
** would just issue "KILL foobar" to clean out dups. But,
** this is not fair. It should actually request another
** nick from local user or kill him/her...
*/
extern MODVAR aTKline *tklines;
extern int badclass;
int register_user(aClient *cptr, aClient *sptr, char *nick, char *username, char *umode, char *virthost, char *ip)
{
ConfigItem_ban *bconf;
char *parv[3], *tmpstr;
#ifdef HOSTILENAME
char stripuser[USERLEN + 1], *u1 = stripuser, *u2, olduser[USERLEN + 1],
userbad[USERLEN * 2 + 1], *ubad = userbad, noident = 0;
#endif
int xx;
anUser *user = sptr->user;
aClient *nsptr;
int i;
char mo[256];
char *tkllayer[9] = {
me.name, /*0 server.name */
"+", /*1 +|- */
"z", /*2 G */
"*", /*3 user */
NULL, /*4 host */
NULL,
NULL, /*6 expire_at */
NULL, /*7 set_at */
NULL /*8 reason */
};
ConfigItem_tld *tlds;
cptr->last = TStime();
parv[0] = sptr->name;
parv[1] = parv[2] = NULL;
nick = sptr->name; /* <- The data is always the same, but the pointer is sometimes not,
* I need this for one of my modules, so do not remove! ;) -- Syzop */
if (MyConnect(sptr))
{
if ((i = check_client(sptr, username))) {
/* This had return i; before -McSkaf */
if (i == -5)
return FLUSH_BUFFER;
sendto_snomask(SNO_CLIENT,
"*** Notice -- %s from %s.",
i == -3 ? "Too many connections" :
"Unauthorized connection", get_client_host(sptr));
ircstp->is_ref++;
ircsprintf(mo, "This server is full.");
return
exit_client(cptr, sptr, &me,
i ==
-3 ? mo :
"You are not authorized to connect to this server");
}
if (sptr->hostp)
{
/* No control-chars or ip-like dns replies... I cheat :)
-- OnyxDragon */
for (tmpstr = sptr->sockhost; *tmpstr > ' ' &&
*tmpstr < 127; tmpstr++);
if (*tmpstr || !*user->realhost
|| isdigit(*(tmpstr - 1)))
strncpyzt(sptr->sockhost,
(char *)Inet_ia2p((struct IN_ADDR*)&sptr->ip), sizeof(sptr->sockhost)); /* Fix the sockhost for debug jic */
strncpyzt(user->realhost, sptr->sockhost,
sizeof(sptr->sockhost));
}
else /* Failsafe point, don't let the user define their
own hostname via the USER command --Cabal95 */
strncpyzt(user->realhost, sptr->sockhost, HOSTLEN + 1);
strncpyzt(user->realhost, user->realhost,
sizeof(user->realhost));
/*
* I do not consider *, ~ or ! 'hostile' in usernames,
* as it is easy to differentiate them (Use \*, \? and \\)
* with the possible?
* exception of !. With mIRC etc. ident is easy to fake
* to contain @ though, so if that is found use non-ident
* username. -Donwulff
*
* I do, We only allow a-z A-Z 0-9 _ - and . now so the
* !strchr(sptr->username, '@') check is out of date. -Cabal95
*
* Moved the noident stuff here. -OnyxDragon
*/
if (!(sptr->flags & FLAGS_DOID))
strncpyzt(user->username, username, USERLEN + 1);
else if (sptr->flags & FLAGS_GOTID)
strncpyzt(user->username, sptr->username, USERLEN + 1);
else
{
/* because username may point to user->username */
char temp[USERLEN + 1];
strncpyzt(temp, username, USERLEN + 1);
if (IDENT_CHECK == 0) {
strncpyzt(user->username, temp, USERLEN + 1);
}
else {
*user->username = '~';
strncpyzt((user->username + 1), temp, USERLEN);
#ifdef HOSTILENAME
noident = 1;
#endif
}
}
#ifdef HOSTILENAME
/*
* Limit usernames to just 0-9 a-z A-Z _ - and .
* It strips the "bad" chars out, and if nothing is left
* changes the username to the first 8 characters of their
* nickname. After the MOTD is displayed it sends numeric
* 455 to the user telling them what(if anything) happened.
* -Cabal95
*
* Moved the noident thing to the right place - see above
* -OnyxDragon
*
* No longer use nickname if the entire ident is invalid,
* if thats the case, it is likely the user is trying to cause
* problems so just ban them. (Using the nick could introduce
* hostile chars) -- codemastr
*/
for (u2 = user->username + noident; *u2; u2++)
{
if (isallowed(*u2))
*u1++ = *u2;
else if (*u2 < 32)
{
/*
* Make sure they can read what control
* characters were in their username.
*/
*ubad++ = '^';
*ubad++ = *u2 + '@';
}
else
*ubad++ = *u2;
}
*u1 = '\0';
*ubad = '\0';
if (strlen(stripuser) != strlen(user->username + noident))
{
if (stripuser[0] == '\0')
{
return exit_client(cptr, cptr, cptr, "Hostile username. Please use only 0-9 a-z A-Z _ - and . in your username.");
}
strcpy(olduser, user->username + noident);
strncpy(user->username + 1, stripuser, USERLEN - 1);
user->username[0] = '~';
user->username[USERLEN] = '\0';
}
else
u1 = NULL;
#endif
/*
* following block for the benefit of time-dependent K:-lines
*/
if ((bconf =
Find_ban(sptr, make_user_host(user->username, user->realhost),
CONF_BAN_USER)))
{
ircstp->is_ref++;
sendto_one(cptr,
":%s %d %s :*** You are not welcome on this server (%s)"
" Email %s for more information.",
me.name, ERR_YOUREBANNEDCREEP,
cptr->name, bconf->reason ? bconf->reason : "",
KLINE_ADDRESS);
return exit_client(cptr, cptr, cptr, "You are banned");
}
if ((bconf = Find_ban(NULL, sptr->info, CONF_BAN_REALNAME)))
{
ircstp->is_ref++;
sendto_one(cptr,
":%s %d %s :*** Your GECOS (real name) is not allowed on this server (%s)"
" Please change it and reconnect",
me.name, ERR_YOUREBANNEDCREEP,
cptr->name, bconf->reason ? bconf->reason : "");
return exit_client(cptr, sptr, &me,
"Your GECOS (real name) is banned from this server");
}
tkl_check_expire(NULL);
/* Check G/Z lines before shuns -- kill before quite -- codemastr */
if ((xx = find_tkline_match(sptr, 0)) < 0)
{
ircstp->is_ref++;
return xx;
}
find_shun(sptr);
xx = find_spamfilter_user(sptr);
if (xx < 0)
return xx;
RunHookReturnInt(HOOKTYPE_PRE_LOCAL_CONNECT, sptr, !=0);
}
else
{
strncpyzt(user->username, username, USERLEN + 1);
}
SetClient(sptr);
IRCstats.clients++;
if (sptr->srvptr && sptr->srvptr->serv)
sptr->srvptr->serv->users++;
user->virthost =
(char *)make_virthost(user->realhost, user->virthost, 1);
if (MyConnect(sptr))
{
IRCstats.unknown--;
IRCstats.me_clients++;
if (IsHidden(sptr))
ircd_log(LOG_CLIENT, "Connect - %s!%s@%s [VHOST %s]", nick,
user->username, user->realhost, user->virthost);
else
ircd_log(LOG_CLIENT, "Connect - %s!%s@%s", nick, user->username,
user->realhost);
sendto_one(sptr, rpl_str(RPL_WELCOME), me.name, nick,
ircnetwork, nick, user->username, user->realhost);
/* This is a duplicate of the NOTICE but see below... */
sendto_one(sptr, rpl_str(RPL_YOURHOST), me.name, nick,
me.name, version);
sendto_one(sptr, rpl_str(RPL_CREATED), me.name, nick, creation);
if (!(sptr->listener->umodes & LISTENER_JAVACLIENT))
sendto_one(sptr, rpl_str(RPL_MYINFO), me.name, parv[0],
me.name, version, umodestring, cmodestring);
else
sendto_one(sptr, ":%s 004 %s %s CR1.8.03-%s %s %s",
me.name, parv[0],
me.name, version, umodestring, cmodestring);
{
extern char *IsupportStrings[];
int i;
for (i = 0; IsupportStrings[i]; i++)
sendto_one(sptr, rpl_str(RPL_ISUPPORT), me.name, nick, IsupportStrings[i]);
}
#ifdef USE_SSL
if (sptr->flags & FLAGS_SSL)
if (sptr->ssl)
sendto_one(sptr,
":%s NOTICE %s :*** You are connected to %s with %s",
me.name, sptr->name, me.name,
ssl_get_cipher(sptr->ssl));
#endif
(void)m_lusers(sptr, sptr, 1, parv);
short_motd(sptr);
#ifdef EXPERIMENTAL
sendto_one(sptr,
":%s NOTICE %s :*** \2NOTE:\2 This server (%s) is running experimental IRC server software. If you find any bugs or problems, please mail unreal-dev@lists.sourceforge.net about it",
me.name, sptr->name, me.name);
#endif
#ifdef HOSTILENAME
/*
* Now send a numeric to the user telling them what, if
* anything, happened.
*/
if (u1)
sendto_one(sptr, err_str(ERR_HOSTILENAME), me.name,
sptr->name, olduser, userbad, stripuser);
#endif
nextping = TStime();
sendto_connectnotice(nick, user, sptr, 0, NULL);
if (IsSecure(sptr))
sptr->umodes |= UMODE_SECURE;
}
else if (IsServer(cptr))
{
aClient *acptr;
if (!(acptr = (aClient *)find_server_quick(user->server)))
{
sendto_ops
("Bad USER [%s] :%s USER %s %s : No such server",
cptr->name, nick, user->username, user->server);
sendto_one(cptr, ":%s KILL %s :%s (No such server: %s)",
me.name, sptr->name, me.name, user->server);
sptr->flags |= FLAGS_KILLED;
return exit_client(sptr, sptr, &me,
"USER without prefix(2.8) or wrong prefix");
}
else if (acptr->from != sptr->from)
{
sendto_ops("Bad User [%s] :%s USER %s %s, != %s[%s]",
cptr->name, nick, user->username, user->server,
acptr->name, acptr->from->name);
sendto_one(cptr, ":%s KILL %s :%s (%s != %s[%s])",
me.name, sptr->name, me.name, user->server,
acptr->from->name, acptr->from->sockhost);
sptr->flags |= FLAGS_KILLED;
return exit_client(sptr, sptr, &me,
"USER server wrong direction");
}
else
sptr->flags |= acptr->flags;
/* *FINALL* this gets in ircd... -- Barubary */
/* We change this a bit .. */
if (IsULine(sptr->srvptr))
sptr->flags |= FLAGS_ULINE;
}
if (sptr->umodes & UMODE_INVISIBLE)
{
IRCstats.invisible++;
}
if (virthost && umode)
{
tkllayer[0] = nick;
tkllayer[1] = nick;
tkllayer[2] = umode;
dontspread = 1;
m_mode(cptr, sptr, 3, tkllayer);
dontspread = 0;
if (virthost && *virthost != '*')
{
if (sptr->user->virthost)
{
MyFree(sptr->user->virthost);
sptr->user->virthost = NULL;
}
/* Here pig.. yeah you .. -Stskeeps */
sptr->user->virthost = strdup(virthost);
}
if (ip && (*ip != '*'))
sptr->user->ip_str = strdup(decode_ip(ip));
}
hash_check_watch(sptr, RPL_LOGON); /* Uglier hack */
send_umode(NULL, sptr, 0, SEND_UMODES|UMODE_SERVNOTICE, buf);
/* NICKv2 Servers ! */
sendto_serv_butone_nickcmd(cptr, sptr, nick,
sptr->hopcount + 1, sptr->lastnick, user->username, user->realhost,
user->server, user->servicestamp, sptr->info,
(!buf || *buf == '\0' ? "+" : buf),
sptr->umodes & UMODE_SETHOST ? sptr->user->virthost : NULL);
/* Send password from sptr->passwd to NickServ for identification,
* if passwd given and if NickServ is online.
* - by taz, modified by Wizzu
*/
if (MyConnect(sptr))
{
char userhost[USERLEN + HOSTLEN + 6];
if (sptr->passwd && (nsptr = find_person(NickServ, NULL)))
sendto_one(nsptr, ":%s %s %s@%s :IDENTIFY %s",
sptr->name,
(IsToken(nsptr->from) ? TOK_PRIVATE : MSG_PRIVATE),
NickServ, SERVICES_NAME, sptr->passwd);
/* Force the user to join the given chans -- codemastr */
if (buf[0] != '\0' && buf[1] != '\0')
sendto_one(cptr, ":%s MODE %s :%s", cptr->name,
cptr->name, buf);
if (user->snomask)
sendto_one(sptr, rpl_str(RPL_SNOMASK),
me.name, sptr->name, get_snostr(user->snomask));
strcpy(userhost,make_user_host(cptr->user->username, cptr->user->realhost));
for (tlds = conf_tld; tlds; tlds = (ConfigItem_tld *) tlds->next) {
if (!match(tlds->mask, userhost))
break;
}
if (tlds && !BadPtr(tlds->channel)) {
char *chans[3] = {
sptr->name,
tlds->channel,
NULL
};
(void)m_join(sptr, sptr, 3, chans);
}
else if (!BadPtr(AUTO_JOIN_CHANS) && strcmp(AUTO_JOIN_CHANS, "0"))
{
char *chans[3] = {
sptr->name,
AUTO_JOIN_CHANS,
NULL
};
(void)m_join(sptr, sptr, 3, chans);
}
}
if (MyConnect(sptr) && !BadPtr(sptr->passwd))
{
MyFree(sptr->passwd);
sptr->passwd = NULL;
}
return 0;
}
/*
** m_nick
** parv[0] = sender prefix
** parv[1] = nickname
** if from new client -taz
** parv[2] = nick password
** if from server:
** parv[2] = hopcount
** parv[3] = timestamp
** parv[4] = username
** parv[5] = hostname
** parv[6] = servername
** if NICK version 1:
** parv[7] = servicestamp
** parv[8] = info
** if NICK version 2:
** parv[7] = servicestamp
** parv[8] = umodes
** parv[9] = virthost, * if none
** parv[10] = info
** if NICKIP:
** parv[10] = ip
** parv[11] = info
*/
CMD_FUNC(m_nick)
{
aTKline *tklban;
int ishold;
aClient *acptr, *serv = NULL;
aClient *acptrs;
char nick[NICKLEN + 2], *s;
Membership *mp;
time_t lastnick = (time_t) 0;
int differ = 1, update_watch = 1;
unsigned char newusr = 0, removemoder = 1;
/*
* If the user didn't specify a nickname, complain
*/
if (parc < 2)
{
sendto_one(sptr, err_str(ERR_NONICKNAMEGIVEN),
me.name, parv[0]);
return 0;
}
if (MyConnect(sptr) && (s = (char *)index(parv[1], '~')))
*s = '\0';
strncpyzt(nick, parv[1], NICKLEN + 1);
if (MyConnect(sptr) && sptr->user && !IsAnOper(sptr))
{
if ((sptr->user->flood.nick_c >= NICK_COUNT) &&
(TStime() - sptr->user->flood.nick_t < NICK_PERIOD))
{
/* Throttle... */
sendto_one(sptr, err_str(ERR_NCHANGETOOFAST), me.name, sptr->name, nick,
(int)(NICK_PERIOD - (TStime() - sptr->user->flood.nick_t)));
return 0;
}
}
/*
* if do_nick_name() returns a null name OR if the server sent a nick
* name and do_nick_name() changed it in some way (due to rules of nick
* creation) then reject it. If from a server and we reject it,
* and KILL it. -avalon 4/4/92
*/
if (do_nick_name(nick) == 0 ||
(IsServer(cptr) && strcmp(nick, parv[1])))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME),
me.name, parv[0], parv[1], "Illegal characters");
if (IsServer(cptr))
{
ircstp->is_kill++;
sendto_failops("Bad Nick: %s From: %s %s",
parv[1], parv[0], get_client_name(cptr, FALSE));
sendto_one(cptr, ":%s KILL %s :%s (%s <- %s[%s])",
me.name, parv[1], me.name, parv[1],
nick, cptr->name);
if (sptr != cptr)
{ /* bad nick change */
sendto_serv_butone(cptr,
":%s KILL %s :%s (%s <- %s!%s@%s)",
me.name, parv[0], me.name,
get_client_name(cptr, FALSE),
parv[0],
sptr->user ? sptr->username : "",
sptr->user ? sptr->user->server :
cptr->name);
sptr->flags |= FLAGS_KILLED;
return exit_client(cptr, sptr, &me, "BadNick");
}
}
return 0;
}
/*
** Protocol 4 doesn't send the server as prefix, so it is possible
** the server doesn't exist (a lagged net.burst), in which case
** we simply need to ignore the NICK. Also when we got that server
** name (again) but from another direction. --Run
*/
/*
** We should really only deal with this for msgs from servers.
** -- Aeto
*/
if (IsServer(cptr) &&
(parc > 7
&& (!(serv = (aClient *)find_server_b64_or_real(parv[6]))
|| serv->from != cptr->from)))
{
sendto_realops("Cannot find server %s (%s)", parv[6],
backupbuf);
return 0;
}
/*
** Check against nick name collisions.
**
** Put this 'if' here so that the nesting goes nicely on the screen :)
** We check against server name list before determining if the nickname
** is present in the nicklist (due to the way the below for loop is
** constructed). -avalon
*/
/* I managed to fuck this up i guess --stskeeps */
if ((acptr = find_server(nick, NULL)))
{
if (MyConnect(sptr))
{
#ifdef GUEST
if (IsUnknown(sptr))
{
RunHook4(HOOKTYPE_GUEST, cptr, sptr, parc, parv);
return 0;
}
#endif
sendto_one(sptr, err_str(ERR_NICKNAMEINUSE), me.name,
BadPtr(parv[0]) ? "*" : parv[0], nick);
return 0; /* NICK message ignored */
}
}
/*
** Check for a Q-lined nickname. If we find it, and it's our
** client, just reject it. -Lefler
** Allow opers to use Q-lined nicknames. -Russell
*/
if (!stricmp("ircd", nick))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME), me.name,
BadPtr(parv[0]) ? "*" : parv[0], nick,
"Reserved for internal IRCd purposes");
return 0;
}
if (!stricmp("irc", nick))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME), me.name,
BadPtr(parv[0]) ? "*" : parv[0], nick,
"Reserved for internal IRCd purposes");
return 0;
}
if (!IsULine(sptr) && (tklban = find_qline(sptr, nick, &ishold)))
{
if (IsServer(sptr) && !ishold)
{
acptrs =
(aClient *)find_server_b64_or_real(sptr->user ==
NULL ? (char *)parv[6] : (char *)sptr->user->
server);
/* (NEW: no unregistered q:line msgs anymore during linking) */
if (!acptrs || (acptrs->serv && acptrs->serv->flags.synced))
sendto_snomask(SNO_QLINE, "Q:lined nick %s from %s on %s", nick,
(*sptr->name != 0
&& !IsServer(sptr) ? sptr->name : "<unregistered>"),
acptrs ? acptrs->name : "unknown server");
}
else if (!ishold)
{
sendto_snomask(SNO_QLINE, "Q:lined nick %s from %s on %s",
nick,
*sptr->name ? sptr->name : "<unregistered>",
me.name);
}
if (!IsServer(cptr))
{
if (ishold)
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME),
me.name, BadPtr(parv[0]) ? "*" : parv[0],
nick, tklban->reason);
return 0;
}
sptr->since += 4; /* lag them up */
if (!IsOper(cptr))
{
sendto_one(sptr, err_str(ERR_ERRONEUSNICKNAME),
me.name, BadPtr(parv[0]) ? "*" : parv[0],
nick, tklban->reason);
sendto_snomask(SNO_QLINE, "Forbidding Q-lined nick %s from %s.",
nick, get_client_name(cptr, FALSE));
return 0; /* NICK message ignored */
}
}
}
/*
** acptr already has result from previous find_server()
*/
if (acptr)
{
/*
** We have a nickname trying to use the same name as
** a server. Send out a nick collision KILL to remove
** the nickname. As long as only a KILL is sent out,
** there is no danger of the server being disconnected.
** Ultimate way to jupiter a nick ? >;-). -avalon
*/
sendto_failops("Nick collision on %s(%s <- %s)",
sptr->name, acptr->from->name,
get_client_name(cptr, FALSE));
ircstp->is_kill++;
sendto_one(cptr, ":%s KILL %s :%s (%s <- %s)",
me.name, sptr->name, me.name, acptr->from->name,
/* NOTE: Cannot use get_client_name
** twice here, it returns static
** string pointer--the other info
** would be lost
*/
get_client_name(cptr, FALSE));
sptr->flags |= FLAGS_KILLED;
return exit_client(cptr, sptr, &me, "Nick/Server collision");
}
if (MyClient(cptr) && !IsOper(cptr))
cptr->since += 3; /* Nick-flood prot. -Donwulff */
if (!(acptr = find_client(nick, NULL)))
goto nickkilldone; /* No collisions, all clear... */
/*
** If the older one is "non-person", the new entry is just
** allowed to overwrite it. Just silently drop non-person,
** and proceed with the nick. This should take care of the
** "dormant nick" way of generating collisions...
*/
/* Moved before Lost User Field to fix some bugs... -- Barubary */
if (IsUnknown(acptr) && MyConnect(acptr))
{
/* This may help - copying code below */
if (acptr == cptr)
return 0;
acptr->flags |= FLAGS_KILLED;
exit_client(NULL, acptr, &me, "Overridden");
goto nickkilldone;
}
/* A sanity check in the user field... */
if (acptr->user == NULL)
{
/* This is a Bad Thing */
sendto_failops("Lost user field for %s in change from %s",
acptr->name, get_client_name(cptr, FALSE));
ircstp->is_kill++;
sendto_one(acptr, ":%s KILL %s :%s (Lost user field!)",
me.name, acptr->name, me.name);
acptr->flags |= FLAGS_KILLED;
/* Here's the previous versions' desynch. If the old one is
messed up, trash the old one and accept the new one.
Remember - at this point there is a new nick coming in!
Handle appropriately. -- Barubary */
exit_client(NULL, acptr, &me, "Lost user field");
goto nickkilldone;
}
/*
** If acptr == sptr, then we have a client doing a nick
** change between *equivalent* nicknames as far as server
** is concerned (user is changing the case of his/her
** nickname or somesuch)
*/
if (acptr == sptr) {
if (strcmp(acptr->name, nick) != 0)
{
/* Allows change of case in his/her nick */
removemoder = 0; /* don't set the user -r */
goto nickkilldone; /* -- go and process change */
} else
/*
** This is just ':old NICK old' type thing.
** Just forget the whole thing here. There is
** no point forwarding it to anywhere,
** especially since servers prior to this
** version would treat it as nick collision.
*/
return 0; /* NICK Message ignored */
}
/*
** Note: From this point forward it can be assumed that
** acptr != sptr (point to different client structures).
*/
/*
** Decide, we really have a nick collision and deal with it
*/
if (!IsServer(cptr))
{
/*
** NICK is coming from local client connection. Just
** send error reply and ignore the command.
*/
#ifdef GUEST
if (IsUnknown(sptr))
{
m_guest(cptr, sptr, parc, parv);
return 0;
}
#endif
sendto_one(sptr, err_str(ERR_NICKNAMEINUSE),
/* parv[0] is empty when connecting */
me.name, BadPtr(parv[0]) ? "*" : parv[0], nick);
return 0; /* NICK message ignored */
}
/*
** NICK was coming from a server connection.
** This means we have a race condition (two users signing on
** at the same time), or two net fragments reconnecting with
** the same nick.
** The latter can happen because two different users connected
** or because one and the same user switched server during a
** net break.
** If we have the old protocol (no TimeStamp and no user@host)
** or if the TimeStamps are equal, we kill both (or only 'new'
** if it was a "NICK new"). Otherwise we kill the youngest
** when user@host differ, or the oldest when they are the same.
** --Run
**
*/
if (IsServer(sptr))
{
/*
** A new NICK being introduced by a neighbouring
** server (e.g. message type "NICK new" received)
*/
if (parc > 3)
{
lastnick = TS2ts(parv[3]);
if (parc > 5)
differ = (mycmp(acptr->user->username, parv[4])
|| mycmp(acptr->user->realhost, parv[5]));
}
sendto_failops("Nick collision on %s (%s %ld <- %s %ld)",
acptr->name, acptr->from->name, acptr->lastnick,
cptr->name, lastnick);
/*
** I'm putting the KILL handling here just to make it easier
** to read, it's hard to follow it the way it used to be.
** Basically, this is what it will do. It will kill both
** users if no timestamp is given, or they are equal. It will
** kill the user on our side if the other server is "correct"
** (user@host differ and their user is older, or user@host are
** the same and their user is younger), otherwise just kill the
** user an reintroduce our correct user.
** The old code just sat there and "hoped" the other server
** would kill their user. Not anymore.
** -- binary
*/
if (!(parc > 3) || (acptr->lastnick == lastnick))
{
ircstp->is_kill++;
sendto_serv_butone(NULL,
":%s KILL %s :%s (Nick Collision)",
me.name, acptr->name, me.name);
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, acptr, &me,
"Nick collision with no timestamp/equal timestamps");
return 0; /* We killed both users, now stop the process. */
}
if ((differ && (acptr->lastnick > lastnick)) ||
(!differ && (acptr->lastnick < lastnick)) || acptr->from == cptr) /* we missed a QUIT somewhere ? */
{
ircstp->is_kill++;
sendto_serv_butone(cptr,
":%s KILL %s :%s (Nick Collision)",
me.name, acptr->name, me.name);
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, acptr, &me, "Nick collision");
goto nickkilldone; /* OK, we got rid of the "wrong" user,
** now we're going to add the user the
** other server introduced.
*/
}
if ((differ && (acptr->lastnick < lastnick)) ||
(!differ && (acptr->lastnick > lastnick)))
{
/*
* Introduce our "correct" user to the other server
*/
sendto_one(cptr, ":%s KILL %s :%s (Nick Collision)",
me.name, parv[1], me.name);
send_umode(NULL, acptr, 0, SEND_UMODES, buf);
sendto_one_nickcmd(cptr, acptr, buf);
if (acptr->user->away)
sendto_one(cptr, ":%s AWAY :%s", acptr->name,
acptr->user->away);
send_user_joins(cptr, acptr);
return 0; /* Ignore the NICK */
}
return 0;
}
else
{
/*
** A NICK change has collided (e.g. message type ":old NICK new").
*/
if (parc > 2)
lastnick = TS2ts(parv[2]);
differ = (mycmp(acptr->user->username, sptr->user->username) ||
mycmp(acptr->user->realhost, sptr->user->realhost));
sendto_failops
("Nick change collision from %s to %s (%s %ld <- %s %ld)",
sptr->name, acptr->name, acptr->from->name, acptr->lastnick,
sptr->from->name, lastnick);
if (!(parc > 2) || lastnick == acptr->lastnick)
{
ircstp->is_kill += 2;
sendto_serv_butone(NULL, /* First kill the new nick. */
":%s KILL %s :%s (Self Collision)",
me.name, acptr->name, me.name);
sendto_serv_butone(cptr, /* Tell my servers to kill the old */
":%s KILL %s :%s (Self Collision)",
me.name, sptr->name, me.name);
sptr->flags |= FLAGS_KILLED;
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, sptr, &me, "Self Collision");
(void)exit_client(NULL, acptr, &me, "Self Collision");
return 0; /* Now that I killed them both, ignore the NICK */
}
if ((differ && (acptr->lastnick > lastnick)) ||
(!differ && (acptr->lastnick < lastnick)))
{
/* sptr (their user) won, let's kill acptr (our user) */
ircstp->is_kill++;
sendto_serv_butone(cptr,
":%s KILL %s :%s (Nick collision: %s <- %s)",
me.name, acptr->name, me.name,
acptr->from->name, sptr->from->name);
acptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, acptr, &me, "Nick collision");
goto nickkilldone; /* their user won, introduce new nick */
}
if ((differ && (acptr->lastnick < lastnick)) ||
(!differ && (acptr->lastnick > lastnick)))
{
/* acptr (our user) won, let's kill sptr (their user),
** and reintroduce our "correct" user
*/
ircstp->is_kill++;
/* Kill the user trying to change their nick. */
sendto_serv_butone(cptr,
":%s KILL %s :%s (Nick collision: %s <- %s)",
me.name, sptr->name, me.name,
sptr->from->name, acptr->from->name);
sptr->flags |= FLAGS_KILLED;
(void)exit_client(NULL, sptr, &me, "Nick collision");
/*
* Introduce our "correct" user to the other server
*/
/* Kill their user. */
sendto_one(cptr, ":%s KILL %s :%s (Nick Collision)",
me.name, parv[1], me.name);
send_umode(NULL, acptr, 0, SEND_UMODES, buf);
sendto_one_nickcmd(cptr, acptr, buf);
if (acptr->user->away)
sendto_one(cptr, ":%s AWAY :%s", acptr->name,
acptr->user->away);
send_user_joins(cptr, acptr);
return 0; /* their user lost, ignore the NICK */
}
}
return 0; /* just in case */
nickkilldone:
if (IsServer(sptr))
{
/* A server introducing a new client, change source */
sptr = make_client(cptr, serv);
add_client_to_list(sptr);
if (parc > 2)
sptr->hopcount = TS2ts(parv[2]);
if (parc > 3)
sptr->lastnick = TS2ts(parv[3]);
else /* Little bit better, as long as not all upgraded */
sptr->lastnick = TStime();
if (sptr->lastnick < 0)
{
sendto_realops
("Negative timestamp recieved from %s, resetting to TStime (%s)",
cptr->name, backupbuf);
sptr->lastnick = TStime();
}
newusr = 1;
}
else if (sptr->name[0] && IsPerson(sptr))
{
/*
** If the client belongs to me, then check to see
** if client is currently on any channels where it
** is currently banned. If so, do not allow the nick
** change to occur.
** Also set 'lastnick' to current time, if changed.
*/
if (MyClient(sptr))
{
for (mp = sptr->user->channel; mp; mp = mp->next)
{
if (!is_skochanop(sptr, mp->chptr) && is_banned(sptr, mp->chptr, BANCHK_NICK))
{
sendto_one(sptr,
err_str(ERR_BANNICKCHANGE),
me.name, parv[0],
mp->chptr->chname);
return 0;
}
if (!IsOper(sptr) && !IsULine(sptr)
&& mp->chptr->mode.mode & MODE_NONICKCHANGE
&& !is_chanownprotop(sptr, mp->chptr))
{
sendto_one(sptr,
err_str(ERR_NONICKCHANGE),
me.name, parv[0],
mp->chptr->chname);
return 0;
}
}
if (TStime() - sptr->user->flood.nick_t >= NICK_PERIOD)
{
sptr->user->flood.nick_t = TStime();
sptr->user->flood.nick_c = 1;
} else
sptr->user->flood.nick_c++;
sendto_snomask(SNO_NICKCHANGE, "*** Notice -- %s (%s@%s) has changed his/her nickname to %s", sptr->name, sptr->user->username, sptr->user->realhost, nick);
RunHook2(HOOKTYPE_LOCAL_NICKCHANGE, sptr, nick);
} else {
sendto_snomask(SNO_FNICKCHANGE, "*** Notice -- %s (%s@%s) has changed his/her nickname to %s", sptr->name, sptr->user->username, sptr->user->realhost, nick);
RunHook3(HOOKTYPE_REMOTE_NICKCHANGE, cptr, sptr, nick);
}
/*
* Client just changing his/her nick. If he/she is
* on a channel, send note of change to all clients
* on that channel. Propagate notice to other servers.
*/
if (mycmp(parv[0], nick) ||
/* Next line can be removed when all upgraded --Run */
(!MyClient(sptr) && parc > 2
&& TS2ts(parv[2]) < sptr->lastnick))
sptr->lastnick = (MyClient(sptr)
|| parc < 3) ? TStime() : TS2ts(parv[2]);
if (sptr->lastnick < 0)
{
sendto_realops("Negative timestamp (%s)", backupbuf);
sptr->lastnick = TStime();
}
add_history(sptr, 1);
sendto_common_channels(sptr, ":%s NICK :%s", parv[0], nick);
sendto_serv_butone_token(cptr, parv[0], MSG_NICK, TOK_NICK,
"%s %ld", nick, sptr->lastnick);
if (removemoder)
sptr->umodes &= ~UMODE_REGNICK;
}
else if (!sptr->name[0])
{
#ifdef NOSPOOF
/*
* Client setting NICK the first time.
*
* Generate a random string for them to pong with.
*/
sptr->nospoof = getrandom32();
sendto_one(sptr, ":%s NOTICE %s :*** If you are having problems"
" connecting due to ping timeouts, please"
" type /quote pong %X or /raw pong %X now.",
me.name, nick, sptr->nospoof, sptr->nospoof);
sendto_one(sptr, "PING :%X", sptr->nospoof);
#endif /* NOSPOOF */
#ifdef CONTACT_EMAIL
sendto_one(sptr,
":%s NOTICE %s :*** If you need assistance with a"
" connection problem, please email " CONTACT_EMAIL
" with the name and version of the client you are"
" using, and the server you tried to connect to: %s",
me.name, nick, me.name);
#endif /* CONTACT_EMAIL */
#ifdef CONTACT_URL
sendto_one(sptr,
":%s NOTICE %s :*** If you need assistance with"
" connecting to this server, %s, please refer to: "
CONTACT_URL, me.name, nick, me.name);
#endif /* CONTACT_URL */
/* Copy password to the passwd field if it's given after NICK
* - originally by taz, modified by Wizzu
*/
if ((parc > 2) && (strlen(parv[2]) <= PASSWDLEN))
{
if (sptr->passwd)
MyFree(sptr->passwd);
sptr->passwd = MyMalloc(strlen(parv[2]) + 1);
(void)strcpy(sptr->passwd, parv[2]);
}
/* This had to be copied here to avoid problems.. */
(void)strcpy(sptr->name, nick);
if (sptr->user && IsNotSpoof(sptr))
{
/*
** USER already received, now we have NICK.
** *NOTE* For servers "NICK" *must* precede the
** user message (giving USER before NICK is possible
** only for local client connection!). register_user
** may reject the client and call exit_client for it
** --must test this and exit m_nick too!!!
*/
#ifndef NOSPOOF
if (USE_BAN_VERSION && MyConnect(sptr))
sendto_one(sptr, ":IRC!IRC@%s PRIVMSG %s :\1VERSION\1",
me.name, nick);
#endif
sptr->lastnick = TStime(); /* Always local client */
if (register_user(cptr, sptr, nick,
sptr->user->username, NULL, NULL, NULL) == FLUSH_BUFFER)
return FLUSH_BUFFER;
strcpy(nick, sptr->name); /* don't ask, but I need this. do not remove! -- Syzop */
update_watch = 0;
newusr = 1;
}
}
/*
* Finally set new nick name.
*/
if (update_watch && sptr->name[0])
{
(void)del_from_client_hash_table(sptr->name, sptr);
if (IsPerson(sptr))
hash_check_watch(sptr, RPL_LOGOFF);
}
(void)strcpy(sptr->name, nick);
(void)add_to_client_hash_table(nick, sptr);
if (IsServer(cptr) && parc > 7)
{
parv[3] = nick;
m_user(cptr, sptr, parc - 3, &parv[3]);
if (GotNetInfo(cptr) && !IsULine(sptr))
sendto_fconnectnotice(sptr->name, sptr->user, sptr, 0, NULL);
}
else if (IsPerson(sptr) && update_watch)
hash_check_watch(sptr, RPL_LOGON);
#ifdef NEWCHFLOODPROT
if (sptr->user && !newusr && !IsULine(sptr))
{
for (mp = sptr->user->channel; mp; mp = mp->next)
{
aChannel *chptr = mp->chptr;
if (chptr && !(mp->flags & (CHFL_CHANOP|CHFL_VOICE|CHFL_CHANOWNER|CHFL_HALFOP|CHFL_CHANPROT)) &&
chptr->mode.floodprot && do_chanflood(chptr->mode.floodprot, FLD_NICK) && MyClient(sptr))
{
do_chanflood_action(chptr, FLD_NICK, "nick");
}
}
}
#endif
if (newusr && !MyClient(sptr) && IsPerson(sptr))
{
RunHook(HOOKTYPE_REMOTE_CONNECT, sptr);
}
return 0;
}
/*
** get_mode_str
** by vmlinuz
** returns an ascii string of modes
*/
char *get_sno_str(aClient *sptr) {
int i;
char *m;
m = buf;
*m++ = '+';
for (i = 0; i <= Snomask_highest && (m - buf < BUFSIZE - 4); i++)
if (Snomask_Table[i].flag && sptr->user->snomask & Snomask_Table[i].mode)
*m++ = Snomask_Table[i].flag;
*m = 0;
return buf;
}
char *get_mode_str(aClient *acptr)
{
int i;
char *m;
m = buf;
*m++ = '+';
for (i = 0; (i <= Usermode_highest) && (m - buf < BUFSIZE - 4); i++)
if (Usermode_Table[i].flag && (acptr->umodes & Usermode_Table[i].mode))
*m++ = Usermode_Table[i].flag;
*m = '\0';
return buf;
}
char *get_modestr(long umodes)
{
int i;
char *m;
m = buf;
*m++ = '+';
for (i = 0; (i <= Usermode_highest) && (m - buf < BUFSIZE - 4); i++)
if (Usermode_Table[i].flag && (umodes & Usermode_Table[i].mode))
*m++ = Usermode_Table[i].flag;
*m = '\0';
return buf;
}
char *get_snostr(long sno) {
int i;
char *m;
m = buf;
*m++ = '+';
for (i = 0; i <= Snomask_highest && (m - buf < BUFSIZE - 4); i++)
if (Snomask_Table[i].flag && sno & Snomask_Table[i].mode)
*m++ = Snomask_Table[i].flag;
*m = 0;
return buf;
}
/*
** m_user
** parv[0] = sender prefix
** parv[1] = username (login name, account)
** parv[2] = client host name (used only from other servers)
** parv[3] = server host name (used only from other servers)
** parv[4] = users real name info
*/
CMD_FUNC(m_user)
{
#define UFLAGS (UMODE_INVISIBLE|UMODE_WALLOP|UMODE_SERVNOTICE)
char *username, *host, *server, *realname, *umodex = NULL, *virthost =
NULL, *ip = NULL;
u_int32_t sstamp = 0;
anUser *user;
aClient *acptr;
if (IsServer(cptr) && !IsUnknown(sptr))
return 0;
if (MyConnect(sptr) && (sptr->listener->umodes & LISTENER_SERVERSONLY))
{
return exit_client(cptr, sptr, sptr,
"This port is for servers only");
}
if (parc > 2 && (username = (char *)index(parv[1], '@')))
*username = '\0';
if (parc < 5 || *parv[1] == '\0' || *parv[2] == '\0' ||
*parv[3] == '\0' || *parv[4] == '\0')
{
sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS),
me.name, parv[0], "USER");
if (IsServer(cptr))
sendto_ops("bad USER param count for %s from %s",
parv[0], get_client_name(cptr, FALSE));
else
return 0;
}
/* Copy parameters into better documenting variables */
username = (parc < 2 || BadPtr(parv[1])) ? "<bad-boy>" : parv[1];
host = (parc < 3 || BadPtr(parv[2])) ? "<nohost>" : parv[2];
server = (parc < 4 || BadPtr(parv[3])) ? "<noserver>" : parv[3];
/* This we can remove as soon as all servers have upgraded. */
if (parc == 6 && IsServer(cptr))
{
if (isdigit(*parv[4]))
sstamp = atol(parv[4]);
realname = (BadPtr(parv[5])) ? "<bad-realname>" : parv[5];
umodex = NULL;
}
else if (parc == 8 && IsServer(cptr))
{
if (isdigit(*parv[4]))
sstamp = atol(parv[4]);
realname = (BadPtr(parv[7])) ? "<bad-realname>" : parv[7];
umodex = parv[5];
virthost = parv[6];
}
else if (parc == 9 && IsServer(cptr))
{
if (isdigit(*parv[4]))
sstamp = atol(parv[4]);
realname = (BadPtr(parv[8])) ? "<bad-realname>" : parv[8];
umodex = parv[5];
virthost = parv[6];
ip = parv[7];
}
else
{
realname = (BadPtr(parv[4])) ? "<bad-realname>" : parv[4];
}
user = make_user(sptr);
if (!MyConnect(sptr))
{
if (sptr->srvptr == NULL)
sendto_ops("WARNING, User %s introduced as being "
"on non-existant server %s.", sptr->name, server);
if (SupportNS(cptr))
{
acptr = (aClient *)find_server_b64_or_real(server);
if (acptr)
user->server = find_or_add(acptr->name);
else
user->server = find_or_add(server);
}
else
user->server = find_or_add(server);
strncpyzt(user->realhost, host, sizeof(user->realhost));
goto user_finish;
}
if (!IsUnknown(sptr))
{
sendto_one(sptr, err_str(ERR_ALREADYREGISTRED),
me.name, parv[0]);
return 0;
}
if (!IsServer(cptr))
{
sptr->umodes |= CONN_MODES;
if (CONNECT_SNOMASK)
{
sptr->umodes |= UMODE_SERVNOTICE;
create_snomask(sptr, user, CONNECT_SNOMASK);
}
}
/* Set it temporarely to at least something trusted,
* this was copying user supplied data directly into user->realhost
* which seemed bad. Not to say this is much better ;p. -- Syzop
*/
strncpyzt(user->realhost, Inet_ia2p(&sptr->ip), sizeof(user->realhost));
user->ip_str = strdup(Inet_ia2p(&sptr->ip));
user->server = me_hash;
user_finish:
user->servicestamp = sstamp;
strncpyzt(sptr->info, realname, sizeof(sptr->info));
if (sptr->name[0] && (IsServer(cptr) ? 1 : IsNotSpoof(sptr)))
/* NICK and no-spoof already received, now we have USER... */
{
if (USE_BAN_VERSION && MyConnect(sptr))
sendto_one(sptr, ":IRC!IRC@%s PRIVMSG %s :\1VERSION\1",
me.name, sptr->name);
return(
register_user(cptr, sptr, sptr->name, username, umodex,
virthost,ip));
}
else
strncpyzt(sptr->user->username, username, USERLEN + 1);
return 0;
}
void set_snomask(aClient *sptr, char *snomask) {
int what = MODE_ADD; /* keep this an int. -- Syzop */
char *p;
int i;
if (snomask == NULL) {
sptr->user->snomask = 0;
return;
}
for (p = snomask; p && *p; p++) {
switch (*p) {
case '+':
what = MODE_ADD;
break;
case '-':
what = MODE_DEL;
break;
default:
for (i = 0; i <= Snomask_highest; i++)
{
if (!Snomask_Table[i].flag)
continue;
if (*p == Snomask_Table[i].flag)
{
if (Snomask_Table[i].allowed && !Snomask_Table[i].allowed(sptr,what))
continue;
if (what == MODE_ADD)
sptr->user->snomask |= Snomask_Table[i].mode;
else
sptr->user->snomask &= ~Snomask_Table[i].mode;
}
}
}
}
}
void create_snomask(aClient *sptr, anUser *user, char *snomask) {
int what = MODE_ADD; /* keep this an int. -- Syzop */
char *p;
int i;
if (snomask == NULL) {
user->snomask = 0;
return;
}
for (p = snomask; p && *p; p++) {
switch (*p) {
case '+':
what = MODE_ADD;
break;
case '-':
what = MODE_DEL;
break;
default:
for (i = 0; i <= Snomask_highest; i++)
{
if (!Snomask_Table[i].flag)
continue;
if (*p == Snomask_Table[i].flag)
{
if (Snomask_Table[i].allowed && !Snomask_Table[i].allowed(sptr,what))
continue;
if (what == MODE_ADD)
user->snomask |= Snomask_Table[i].mode;
else
user->snomask &= ~Snomask_Table[i].mode;
}
}
}
}
}
/*
* m_umode() added 15/10/91 By Darren Reed.
* parv[0] - sender
* parv[1] - username to change mode for
* parv[2] - modes to change
*/
CMD_FUNC(m_umode)
{
int i;
char **p, *m;
aClient *acptr;
int what, setflags, setsnomask = 0;
/* (small note: keep 'what' as an int. -- Syzop). */
short rpterror = 0, umode_restrict_err = 0, chk_restrict = 0, modex_err = 0;
what = MODE_ADD;
if (parc < 2)
{
sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS),
me.name, parv[0], "MODE");
return 0;
}
if (!(acptr = find_person(parv[1], NULL)))
{
if (MyConnect(sptr))
sendto_one(sptr, err_str(ERR_NOSUCHNICK),
me.name, parv[0], parv[1]);
return 0;
}
if (acptr != sptr)
return 0;
if (parc < 3)
{
sendto_one(sptr, rpl_str(RPL_UMODEIS),
me.name, parv[0], get_mode_str(sptr));
if (sptr->user->snomask)
sendto_one(sptr, rpl_str(RPL_SNOMASK),
me.name, parv[0], get_sno_str(sptr));
return 0;
}
/* find flags already set for user */
setflags = 0;
for (i = 0; i <= Usermode_highest; i++)
if ((sptr->umodes & Usermode_Table[i].mode))
setflags |= Usermode_Table[i].mode;
if (RESTRICT_USERMODES && MyClient(sptr) && !IsAnOper(sptr) && !IsServer(sptr))
chk_restrict = 1;
if (MyConnect(sptr))
setsnomask = sptr->user->snomask;
/*
* parse mode change string(s)
*/
p = &parv[2];
for (m = *p; *m; m++)
{
if (chk_restrict && strchr(RESTRICT_USERMODES, *m))
{
if (!umode_restrict_err)
{
sendto_one(sptr, ":%s %s %s :Setting/removing of usermode(s) '%s' has been disabled.",
me.name, IsWebTV(sptr) ? "PRIVMSG" : "NOTICE", sptr->name, RESTRICT_USERMODES);
umode_restrict_err = 1;
}
continue;
}
switch (*m)
{
case '+':
what = MODE_ADD;
break;
case '-':
what = MODE_DEL;
break;
/* we may not get these,
* but they shouldnt be in default
*/
case ' ':
case '\t':
break;
case 'r':
case 't':
if (MyClient(sptr))
break;
/* since we now use chatops define in unrealircd.conf, we have
* to disallow it here */
case 's':
if (what == MODE_DEL) {
if (parc >= 4 && sptr->user->snomask) {
set_snomask(sptr, parv[3]);
if (sptr->user->snomask == 0)
goto def;
break;
}
else {
set_snomask(sptr, NULL);
goto def;
}
}
if (what == MODE_ADD) {
if (parc < 4)
set_snomask(sptr, IsAnOper(sptr) ? SNO_DEFOPER : SNO_DEFUSER);
else
set_snomask(sptr, parv[3]);
goto def;
}
case 'o':
case 'O':
if(sptr->from->flags & FLAGS_QUARANTINE)
break;
/* A local user trying to set himself +o/+O is denied here.
* A while later (outside this loop) it is handled as well (and +C, +N, etc too)
* but we need to take care here too because it might cause problems
* since otherwise all IsOper()/IsAnOper() calls cannot be trusted,
* that's just asking for bugs! -- Syzop.
*/
if (MyClient(sptr) && (what == MODE_ADD)) /* Someone setting himself +o? Deny it. */
break;
goto def;
case 'x':
switch (UHOST_ALLOWED)
{
case UHALLOW_ALWAYS:
goto def;
case UHALLOW_NEVER:
if (MyClient(sptr))
{
if (!modex_err) {
sendto_one(sptr, ":%s %s %s :*** Setting %cx is disabled", me.name, IsWebTV(sptr) ? "PRIVMSG" : "NOTICE", sptr->name, what == MODE_ADD ? '+' : '-');
modex_err = 1;
}
break;
}
goto def;
case UHALLOW_NOCHANS:
if (MyClient(sptr) && sptr->user->joined)
{
if (!modex_err) {
sendto_one(sptr, ":%s %s %s :*** Setting %cx can not be done while you are on channels", me.name, IsWebTV(sptr) ? "PRIVMSG" : "NOTICE", sptr->name, what == MODE_ADD ? '+' : '-');
modex_err = 1;
}
break;
}
goto def;
case UHALLOW_REJOIN:
/* Handled later */
goto def;
}
break;
default:
def:
for (i = 0; i <= Usermode_highest; i++)
{
if (*m == Usermode_Table[i].flag)
{
if (Usermode_Table[i].allowed)
if (!Usermode_Table[i].allowed(sptr,what))
break;
if (what == MODE_ADD)
sptr->umodes |= Usermode_Table[i].mode;
else
sptr->umodes &= ~Usermode_Table[i].mode;
break;
}
else if (i == Usermode_highest && MyConnect(sptr) && !rpterror)
{
sendto_one(sptr,
err_str(ERR_UMODEUNKNOWNFLAG),
me.name, parv[0]);
rpterror = 1;
}
}
break;
} /* switch */
} /* for */
/*
* stop users making themselves operators too easily
*/
if (!(setflags & UMODE_OPER) && IsOper(sptr) && !IsServer(cptr))
ClearOper(sptr);
if (!(setflags & UMODE_LOCOP) && IsLocOp(sptr) && !IsServer(cptr))
sptr->umodes &= ~UMODE_LOCOP;
/*
* Let only operators set HelpOp
* Helpops get all /quote help <mess> globals -Donwulff
*/
if (MyClient(sptr) && IsHelpOp(sptr) && !OPCanHelpOp(sptr))
ClearHelpOp(sptr);
/*
* Let only operators set FloodF, ClientF; also
* remove those flags if they've gone -o/-O.
* FloodF sends notices about possible flooding -Cabal95
* ClientF sends notices about clients connecting or exiting
* Admin is for server admins
*/
if (!IsAnOper(sptr) && !IsServer(cptr))
{
sptr->umodes &= ~UMODE_WHOIS;
ClearAdmin(sptr);
ClearSAdmin(sptr);
ClearNetAdmin(sptr);
ClearHideOper(sptr);
ClearCoAdmin(sptr);
ClearHelpOp(sptr);
}
/*
* New oper access flags - Only let them set certian usermodes on
* themselves IF they have access to set that specific mode in their
* O:Line.
*/
if (MyClient(sptr)) {
if (IsAnOper(sptr)) {
if (IsAdmin(sptr) && !OPIsAdmin(sptr))
ClearAdmin(sptr);
if (IsSAdmin(sptr) && !OPIsSAdmin(sptr))
ClearSAdmin(sptr);
if (IsNetAdmin(sptr) && !OPIsNetAdmin(sptr))
ClearNetAdmin(sptr);
if (IsCoAdmin(sptr) && !OPIsCoAdmin(sptr))
ClearCoAdmin(sptr);
if (MyClient(sptr) && (sptr->umodes & UMODE_SECURE)
&& !IsSecure(sptr))
sptr->umodes &= ~UMODE_SECURE;
}
/*
This is to remooove the kix bug.. and to protect some stuffie
-techie
*/
if (MyClient(sptr) && (sptr->umodes & UMODE_KIX) && (!OPCanUmodeq(sptr) || !IsAnOper(sptr)))
sptr->umodes &= ~UMODE_KIX;
if (MyClient(sptr) && (sptr->umodes & UMODE_SECURE) && !IsSecure(sptr))
sptr->umodes &= ~UMODE_SECURE;
if (MyClient(sptr) && !(sptr->umodes & UMODE_SECURE) && IsSecure(sptr))
sptr->umodes |= UMODE_SECURE;
}
/*
* For Services Protection...
*/
if (!IsServer(cptr) && !IsULine(sptr))
{
if (IsServices(sptr))
ClearServices(sptr);
}
if ((setflags & UMODE_HIDE) && !IsHidden(sptr))
sptr->umodes &= ~UMODE_SETHOST;
if (IsHidden(sptr) && !(setflags & UMODE_HIDE))
{
if (sptr->user->virthost)
{
MyFree(sptr->user->virthost);
sptr->user->virthost = NULL;
}
sptr->user->virthost = (char *)make_virthost(sptr->user->realhost,
sptr->user->virthost, 1);
if (!dontspread)
sendto_serv_butone_token_opt(cptr, OPT_VHP, sptr->name,
MSG_SETHOST, TOK_SETHOST, "%s", sptr->user->virthost);
if (UHOST_ALLOWED == UHALLOW_REJOIN)
{
/* LOL, this is ugly ;) */
sptr->umodes &= ~UMODE_HIDE;
rejoin_doparts(sptr);
sptr->umodes |= UMODE_HIDE;
rejoin_dojoinandmode(sptr);
if (MyClient(sptr))
sptr->since += 7; /* Add fake lag */
}
}
if (!IsHidden(sptr) && (setflags & UMODE_HIDE))
{
if (UHOST_ALLOWED == UHALLOW_REJOIN)
{
/* LOL, this is ugly ;) */
sptr->umodes |= UMODE_HIDE;
rejoin_doparts(sptr);
sptr->umodes &= ~UMODE_HIDE;
rejoin_dojoinandmode(sptr);
if (MyClient(sptr))
sptr->since += 7; /* Add fake lag */
}
if (sptr->user->virthost)
{
MyFree(sptr->user->virthost);
sptr->user->virthost = NULL;
}
/* (Re)create the cloaked virthost, because it will be used
* for ban-checking... free+recreate here because it could have
* been a vhost for example. -- Syzop
*/
sptr->user->virthost = (char *)make_virthost(sptr->user->realhost, sptr->user->virthost, 1);
}
/*
* If I understand what this code is doing correctly...
* If the user WAS an operator and has now set themselves -o/-O
* then remove their access, d'oh!
* In order to allow opers to do stuff like go +o, +h, -o and
* remain +h, I moved this code below those checks. It should be
* O.K. The above code just does normal access flag checks. This
* only changes the operflag access level. -Cabal95
*/
if ((setflags & (UMODE_OPER | UMODE_LOCOP)) && !IsAnOper(sptr) &&
MyConnect(sptr))
{
#ifndef NO_FDLIST
delfrom_fdlist(sptr->slot, &oper_fdlist);
#endif
sptr->oflag = 0;
remove_oper_snomasks(sptr);
RunHook2(HOOKTYPE_LOCAL_OPER, sptr, 0);
}
if ((sptr->umodes & UMODE_BOT) && !(setflags & UMODE_BOT) && MyClient(sptr))
{
/* now +B */
(void)m_botmotd(sptr, sptr, 1, parv);
}
if (!(setflags & UMODE_OPER) && IsOper(sptr))
IRCstats.operators++;
if ((setflags & UMODE_OPER) && !IsOper(sptr))
{
IRCstats.operators--;
VERIFY_OPERCOUNT(sptr, "umode1");
}
/* FIXME: This breaks something */
if (!(setflags & UMODE_HIDEOPER) && IsHideOper(sptr))
{
if (IsOper(sptr)) /* decrease, but only if GLOBAL oper */
IRCstats.operators--;
VERIFY_OPERCOUNT(sptr, "umode2");
}
if ((setflags & UMODE_HIDEOPER) && !IsHideOper(sptr))
{
if (IsOper(sptr)) /* increase, but only if GLOBAL oper */
IRCstats.operators++;
}
if (!(setflags & UMODE_INVISIBLE) && IsInvisible(sptr))
IRCstats.invisible++;
if ((setflags & UMODE_INVISIBLE) && !IsInvisible(sptr))
IRCstats.invisible--;
/*
* compare new flags with old flags and send string which
* will cause servers to update correctly.
*/
if (setflags != sptr->umodes)
RunHook3(HOOKTYPE_UMODE_CHANGE, sptr, setflags, sptr->umodes);
if (dontspread == 0)
send_umode_out(cptr, sptr, setflags);
if (MyConnect(sptr) && setsnomask != sptr->user->snomask)
sendto_one(sptr, rpl_str(RPL_SNOMASK),
me.name, parv[0], get_sno_str(sptr));
return 0;
}
/*
* send the MODE string for user (user) to connection cptr
* -avalon
*/
void send_umode(aClient *cptr, aClient *sptr, long old, long sendmask, char *umode_buf)
{
int i;
long flag;
char *m;
int what = MODE_NULL;
/*
* build a string in umode_buf to represent the change in the user's
* mode between the new (sptr->flag) and 'old'.
*/
m = umode_buf;
*m = '\0';
for (i = 0; i <= Usermode_highest; i++)
{
if (!Usermode_Table[i].flag)
continue;
flag = Usermode_Table[i].mode;
if (MyClient(sptr) && !(flag & sendmask))
continue;
if ((flag & old) && !(sptr->umodes & flag))
{
if (what == MODE_DEL)
*m++ = Usermode_Table[i].flag;
else
{
what = MODE_DEL;
*m++ = '-';
*m++ = Usermode_Table[i].flag;
}
}
else if (!(flag & old) && (sptr->umodes & flag))
{
if (what == MODE_ADD)
*m++ = Usermode_Table[i].flag;
else
{
what = MODE_ADD;
*m++ = '+';
*m++ = Usermode_Table[i].flag;
}
}
}
*m = '\0';
if (*umode_buf && cptr)
sendto_one(cptr, ":%s %s %s :%s", sptr->name,
(IsToken(cptr) ? TOK_MODE : MSG_MODE),
sptr->name, umode_buf);
}
/*
* added Sat Jul 25 07:30:42 EST 1992
*/
void send_umode_out(aClient *cptr, aClient *sptr, long old)
{
int i;
aClient *acptr;
send_umode(NULL, sptr, old, SEND_UMODES, buf);
for (i = LastSlot; i >= 0; i--)
if ((acptr = local[i]) && IsServer(acptr) &&
(acptr != cptr) && (acptr != sptr) && *buf) {
if (!SupportUMODE2(acptr))
{
sendto_one(acptr, ":%s MODE %s :%s",
sptr->name, sptr->name, buf);
}
else
{
sendto_one(acptr, ":%s %s %s",
sptr->name,
(IsToken(acptr) ? TOK_UMODE2 : MSG_UMODE2),
buf);
}
}
if (cptr && MyClient(cptr))
send_umode(cptr, sptr, old, ALL_UMODES, buf);
}
void send_umode_out_nickv2(aClient *cptr, aClient *sptr, long old)
{
int i;
aClient *acptr;
send_umode(NULL, sptr, old, SEND_UMODES, buf);
for (i = LastSlot; i >= 0; i--)
if ((acptr = local[i]) && IsServer(acptr)
&& !SupportNICKv2(acptr) && (acptr != cptr)
&& (acptr != sptr) && *buf)
sendto_one(acptr, ":%s MODE %s :%s", sptr->name,
sptr->name, buf);
if (cptr && MyClient(cptr))
send_umode(cptr, sptr, old, ALL_UMODES, buf);
}
int del_silence(aClient *sptr, char *mask)
{
Link **lp;
Link *tmp;
for (lp = &(sptr->user->silence); *lp; lp = &((*lp)->next))
if (mycmp(mask, (*lp)->value.cp) == 0)
{
tmp = *lp;
*lp = tmp->next;
MyFree(tmp->value.cp);
free_link(tmp);
return 0;
}
return -1;
}
int add_silence(aClient *sptr, char *mask, int senderr)
{
Link *lp;
int cnt = 0;
for (lp = sptr->user->silence; lp; lp = lp->next)
{
if (MyClient(sptr))
if ((strlen(lp->value.cp) > MAXSILELENGTH) || (++cnt >= SILENCE_LIMIT))
{
if (senderr)
sendto_one(sptr, err_str(ERR_SILELISTFULL), me.name, sptr->name, mask);
return -1;
}
else
{
if (!match(lp->value.cp, mask))
return -1;
}
else if (!mycmp(lp->value.cp, mask))
return -1;
}
lp = make_link();
bzero((char *)lp, sizeof(Link));
lp->next = sptr->user->silence;
lp->value.cp = (char *)MyMalloc(strlen(mask) + 1);
(void)strcpy(lp->value.cp, mask);
sptr->user->silence = lp;
return 0;
}
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