/*
* IRC - Internet Relay Chat, ircd/s_user.c (formerly ircd/s_msg.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.
*
* $Id: s_user.c,v 1.52.2.17 2004/01/11 00:23:33 isomer Exp $
*/
#include "config.h"
#include "s_user.h"
#include "IPcheck.h"
#include "channel.h"
#include "class.h"
#include "client.h"
#include "hash.h"
#include "ircd.h"
#include "ircd_alloc.h"
#include "ircd_chattr.h"
#include "ircd_features.h"
#include "ircd_log.h"
#include "ircd_reply.h"
#include "ircd_snprintf.h"
#include "ircd_string.h"
#include "list.h"
#include "match.h"
#include "motd.h"
#include "msg.h"
#include "msgq.h"
#include "numeric.h"
#include "numnicks.h"
#include "parse.h"
#include "querycmds.h"
#include "random.h"
#include "s_bsd.h"
#include "s_conf.h"
#include "s_debug.h"
#include "s_misc.h"
#include "s_serv.h" /* max_client_count */
#include "send.h"
#include "struct.h"
#include "support.h"
#include "supported.h"
#include "sys.h"
#include "userload.h"
#include "version.h"
#include "whowas.h"
#include "handlers.h" /* m_motd and m_lusers */
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
static int userCount = 0;
/*
* 'make_user' add's an User information block to a client
* if it was not previously allocated.
*/
struct User *make_user(struct Client *cptr)
{
assert(0 != cptr);
if (!cli_user(cptr)) {
cli_user(cptr) = (struct User*) MyMalloc(sizeof(struct User));
assert(0 != cli_user(cptr));
/* All variables are 0 by default */
memset(cli_user(cptr), 0, sizeof(struct User));
#ifdef DEBUGMODE
++userCount;
#endif
cli_user(cptr)->refcnt = 1;
}
return cli_user(cptr);
}
/*
* free_user
*
* Decrease user reference count by one and release block, if count reaches 0.
*/
void free_user(struct User* user)
{
assert(0 != user);
assert(0 < user->refcnt);
if (--user->refcnt == 0) {
if (user->away)
MyFree(user->away);
/*
* sanity check
*/
assert(0 == user->joined);
assert(0 == user->invited);
assert(0 == user->channel);
MyFree(user);
#ifdef DEBUGMODE
--userCount;
#endif
}
}
void user_count_memory(size_t* count_out, size_t* bytes_out)
{
assert(0 != count_out);
assert(0 != bytes_out);
*count_out = userCount;
*bytes_out = userCount * sizeof(struct User);
}
/*
* 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;
*
*/
struct Client *next_client(struct Client *next, const char* ch)
{
struct Client *tmp = next;
if (!tmp)
return NULL;
next = FindClient(ch);
next = next ? next : tmp;
if (cli_prev(tmp) == next)
return NULL;
if (next != tmp)
return next;
for (; next; next = cli_next(next))
if (!match(ch, cli_name(next)))
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. It can be a nickname, servername,
* or server mask (from a local user) or a server
* numeric (from a remote 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_cmd(struct Client *from, const char *cmd, const char *tok,
struct Client *one, int MustBeOper, const char *pattern,
int server, int parc, char *parv[])
{
struct Client *acptr;
char *to;
/* Assume it's me, if no server or an unregistered client */
if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
return (HUNTED_ISME);
if (MustBeOper && !IsPrivileged(from))
{
send_reply(from, ERR_NOPRIVILEGES);
return HUNTED_NOSUCH;
}
/* Make sure it's a server */
if (MyUser(from)) {
/* Make sure it's a server */
if (!strchr(to, '*')) {
if (0 == (acptr = FindClient(to))) {
send_reply(from, ERR_NOSUCHSERVER, to);
return HUNTED_NOSUCH;
}
if (cli_user(acptr))
acptr = cli_user(acptr)->server;
} else if (!(acptr = find_match_server(to))) {
send_reply(from, ERR_NOSUCHSERVER, to);
return (HUNTED_NOSUCH);
}
} else if (!(acptr = FindNServer(to)))
return (HUNTED_NOSUCH); /* Server broke off in the meantime */
if (IsMe(acptr))
return (HUNTED_ISME);
if (MustBeOper && !IsPrivileged(from)) {
send_reply(from, ERR_NOPRIVILEGES);
return HUNTED_NOSUCH;
}
assert(!IsServer(from));
parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
sendcmdto_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
parv[4], parv[5], parv[6], parv[7], parv[8]);
return (HUNTED_PASS);
}
int hunt_server_prio_cmd(struct Client *from, const char *cmd, const char *tok,
struct Client *one, int MustBeOper,
const char *pattern, int server, int parc,
char *parv[])
{
struct Client *acptr;
char *to;
/* Assume it's me, if no server or an unregistered client */
if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
return (HUNTED_ISME);
/* Make sure it's a server */
if (MyUser(from)) {
/* Make sure it's a server */
if (!strchr(to, '*')) {
if (0 == (acptr = FindClient(to))) {
send_reply(from, ERR_NOSUCHSERVER, to);
return HUNTED_NOSUCH;
}
if (cli_user(acptr))
acptr = cli_user(acptr)->server;
} else if (!(acptr = find_match_server(to))) {
send_reply(from, ERR_NOSUCHSERVER, to);
return (HUNTED_NOSUCH);
}
} else if (!(acptr = FindNServer(to)))
return (HUNTED_NOSUCH); /* Server broke off in the meantime */
if (IsMe(acptr))
return (HUNTED_ISME);
if (MustBeOper && !IsPrivileged(from)) {
send_reply(from, ERR_NOPRIVILEGES);
return HUNTED_NOSUCH;
}
/* assert(!IsServer(from)); SETTIME to particular destinations permitted */
parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
sendcmdto_prio_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
parv[4], parv[5], parv[6], parv[7], parv[8]);
return (HUNTED_PASS);
}
/*
* clean_user_id
*
* Copy `source' to `dest', replacing all occurances of '~' and characters that
* are not `isIrcUi' by an underscore.
* Copies at most USERLEN - 1 characters or up till the first control character.
* If `tilde' is true, then a tilde is prepended to `dest'.
* Note that `dest' and `source' can point to the same area or to different
* non-overlapping areas.
*/
static char *clean_user_id(char *dest, char *source, int tilde)
{
char ch;
char *d = dest;
char *s = source;
int rlen = USERLEN;
ch = *s++; /* Store first character to copy: */
if (tilde)
{
*d++ = '~'; /* If `dest' == `source', then this overwrites `ch' */
--rlen;
}
while (ch && !IsCntrl(ch) && rlen--)
{
char nch = *s++; /* Store next character to copy */
*d++ = IsUserChar(ch) ? ch : '_'; /* This possibly overwrites it */
if (nch == '~')
ch = '_';
else
ch = nch;
}
*d = 0;
return dest;
}
/*
* 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...
*/
int register_user(struct Client *cptr, struct Client *sptr,
const char *nick, char *username)
{
struct ConfItem* aconf;
char* parv[3];
char* tmpstr;
char* tmpstr2;
char c = 0; /* not alphanum */
char d = 'a'; /* not a digit */
short upper = 0;
short lower = 0;
short pos = 0;
short leadcaps = 0;
short other = 0;
short digits = 0;
short badid = 0;
short digitgroups = 0;
struct User* user = cli_user(sptr);
int killreason;
char ip_base64[8];
user->last = CurrentTime;
parv[0] = cli_name(sptr);
parv[1] = parv[2] = NULL;
if (MyConnect(sptr))
{
static time_t last_too_many1;
static time_t last_too_many2;
assert(cptr == sptr);
switch (conf_check_client(sptr))
{
case ACR_OK:
break;
case ACR_NO_AUTHORIZATION:
sendto_opmask_butone(0, SNO_UNAUTH, "Unauthorized connection from %s.",
get_client_name(sptr, HIDE_IP));
++ServerStats->is_ref;
return exit_client(cptr, sptr, &me,
"No Authorization - use another server");
case ACR_TOO_MANY_IN_CLASS:
if (CurrentTime - last_too_many1 >= (time_t) 60)
{
last_too_many1 = CurrentTime;
sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections in "
"class %i for %s.", get_client_class(sptr),
get_client_name(sptr, SHOW_IP));
}
++ServerStats->is_ref;
IPcheck_connect_fail(cli_ip(sptr));
return exit_client(cptr, sptr, &me,
"Sorry, your connection class is full - try "
"again later or try another server");
case ACR_TOO_MANY_FROM_IP:
if (CurrentTime - last_too_many2 >= (time_t) 60)
{
last_too_many2 = CurrentTime;
sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections from "
"same IP for %s.",
get_client_name(sptr, SHOW_IP));
}
++ServerStats->is_ref;
return exit_client(cptr, sptr, &me,
"Too many connections from your host");
case ACR_ALREADY_AUTHORIZED:
/* Can this ever happen? */
case ACR_BAD_SOCKET:
++ServerStats->is_ref;
IPcheck_connect_fail(cli_ip(sptr));
return exit_client(cptr, sptr, &me, "Unknown error -- Try again");
}
ircd_strncpy(user->host, cli_sockhost(sptr), HOSTLEN);
ircd_strncpy(user->realhost, cli_sockhost(sptr), HOSTLEN);
aconf = cli_confs(sptr)->value.aconf;
clean_user_id(user->username,
HasFlag(sptr, FLAG_GOTID) ? cli_username(sptr) : username,
HasFlag(sptr, FLAG_DOID) && !HasFlag(sptr, FLAG_GOTID));
if ((user->username[0] == '\0')
|| ((user->username[0] == '~') && (user->username[1] == '\000')))
return exit_client(cptr, sptr, &me, "USER: Bogus userid.");
if (!EmptyString(aconf->passwd)
&& !(IsDigit(*aconf->passwd) && !aconf->passwd[1])
&& strcmp(cli_passwd(sptr), aconf->passwd))
{
ServerStats->is_ref++;
send_reply(sptr, ERR_PASSWDMISMATCH);
return exit_client(cptr, sptr, &me, "Bad Password");
}
memset(cli_passwd(sptr), 0, sizeof(cli_passwd(sptr)));
/*
* following block for the benefit of time-dependent K:-lines
*/
if ((killreason=find_kill(sptr))) {
ServerStats->is_ref++;
return exit_client(cptr, sptr, &me,
killreason == -1 ? "K-lined" : "G-lined");
}
/*
* Check for mixed case usernames, meaning probably hacked. Jon2 3-94
* Summary of rules now implemented in this patch: Ensor 11-94
* In a mixed-case name, if first char is upper, one more upper may
* appear anywhere. (A mixed-case name *must* have an upper first
* char, and may have one other upper.)
* A third upper may appear if all 3 appear at the beginning of the
* name, separated only by "others" (-/_/.).
* A single group of digits is allowed anywhere.
* Two groups of digits are allowed if at least one of the groups is
* at the beginning or the end.
* Only one '-', '_', or '.' is allowed (or two, if not consecutive).
* But not as the first or last char.
* No other special characters are allowed.
* Name must contain at least one letter.
*/
tmpstr2 = tmpstr = (username[0] == '~' ? &username[1] : username);
while (*tmpstr && !badid)
{
pos++;
c = *tmpstr;
tmpstr++;
if (IsLower(c))
{
lower++;
}
else if (IsUpper(c))
{
upper++;
if ((leadcaps || pos == 1) && !lower && !digits)
leadcaps++;
}
else if (IsDigit(c))
{
digits++;
if (pos == 1 || !IsDigit(d))
{
digitgroups++;
if (digitgroups > 2)
badid = 1;
}
}
else if (c == '-' || c == '_' || c == '.')
{
other++;
if (pos == 1)
badid = 1;
else if (d == '-' || d == '_' || d == '.' || other > 2)
badid = 1;
}
else
badid = 1;
d = c;
}
if (!badid)
{
if (lower && upper && (!leadcaps || leadcaps > 3 ||
(upper > 2 && upper > leadcaps)))
badid = 1;
else if (digitgroups == 2 && !(IsDigit(tmpstr2[0]) || IsDigit(c)))
badid = 1;
else if ((!lower && !upper) || !IsAlnum(c))
badid = 1;
}
if (badid && (!HasFlag(sptr, FLAG_GOTID) ||
strcmp(cli_username(sptr), username) != 0))
{
ServerStats->is_ref++;
send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
":Your username is invalid.");
send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
":Connect with your real username, in lowercase.");
send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
":If your mail address were foo@bar.com, your username "
"would be foo.");
return exit_client(cptr, sptr, &me, "USER: Bad username");
}
Count_unknownbecomesclient(sptr, UserStats);
}
else {
ircd_strncpy(user->username, username, USERLEN);
Count_newremoteclient(UserStats, user->server);
}
SetUser(sptr);
if (IsInvisible(sptr))
++UserStats.inv_clients;
if (IsOper(sptr))
++UserStats.opers;
if (MyConnect(sptr)) {
cli_handler(sptr) = CLIENT_HANDLER;
release_dns_reply(sptr);
SetLocalNumNick(sptr);
send_reply(
sptr,
RPL_WELCOME,
feature_str(FEAT_NETWORK),
feature_str(FEAT_PROVIDER) ? " via " : "",
feature_str(FEAT_PROVIDER) ? feature_str(FEAT_PROVIDER) : "",
nick);
/*
* This is a duplicate of the NOTICE but see below...
*/
send_reply(sptr, RPL_YOURHOST, cli_name(&me), version);
send_reply(sptr, RPL_CREATED, creation);
send_reply(sptr, RPL_MYINFO, cli_name(&me), version);
send_supported(sptr);
m_lusers(sptr, sptr, 1, parv);
update_load();
motd_signon(sptr);
/* nextping = CurrentTime; */
if (cli_snomask(sptr) & SNO_NOISY)
set_snomask(sptr, cli_snomask(sptr) & SNO_NOISY, SNO_ADD);
if (feature_bool(FEAT_CONNEXIT_NOTICES))
sendto_opmask_butone(0, SNO_CONNEXIT,
"Client connecting: %s (%s@%s) [%s] {%d} [%s] <%s%s>",
cli_name(sptr), user->username, user->host,
cli_sock_ip(sptr), get_client_class(sptr),
cli_info(sptr),
NumNick(cptr) /* Two %'s */
);
IPcheck_connect_succeeded(sptr);
}
else
/* if (IsServer(cptr)) */
{
struct Client *acptr;
acptr = user->server;
if (cli_from(acptr) != cli_from(sptr))
{
sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])",
sptr, cli_name(&me), cli_name(user->server), cli_name(cli_from(acptr)),
cli_sockhost(cli_from(acptr)));
SetFlag(sptr, FLAG_KILLED);
return exit_client(cptr, sptr, &me, "NICK server wrong direction");
}
else
if (HasFlag(acptr, FLAG_TS8))
SetFlag(sptr, FLAG_TS8);
/*
* Check to see if this user is being propogated
* as part of a net.burst, or is using protocol 9.
* FIXME: This can be speeded up - its stupid to check it for
* every NICK message in a burst again --Run.
*/
for (acptr = user->server; acptr != &me; acptr = cli_serv(acptr)->up) {
if (IsBurst(acptr) || Protocol(acptr) < 10)
break;
}
if (!IPcheck_remote_connect(sptr, (acptr != &me))) {
/*
* We ran out of bits to count this
*/
sendcmdto_one(&me, CMD_KILL, sptr, "%C :%s (Too many connections from "
"your host -- Ghost)", sptr, cli_name(&me));
return exit_client(cptr, sptr, &me, "Too many connections from your"
" host -- throttled");
}
}
tmpstr = umode_str(sptr);
sendcmdto_serv_butone(user->server, CMD_NICK, cptr,
"%s %d %Tu %s %s %s%s%s%s %s%s :%s",
nick, cli_hopcount(sptr) + 1, cli_lastnick(sptr),
user->username, user->realhost,
*tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
inttobase64(ip_base64, ntohl(cli_ip(sptr).s_addr), 6),
NumNick(sptr), cli_info(sptr));
/* Send umode to client */
if (MyUser(sptr))
{
static struct Flags flags; /* automatically initialized to zeros */
send_umode(cptr, sptr, &flags, ALL_UMODES);
if (cli_snomask(sptr) != SNO_DEFAULT && HasFlag(sptr, FLAG_SERVNOTICE))
send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
}
return 0;
}
static const struct UserMode {
unsigned int flag;
char c;
} userModeList[] = {
{ FLAG_OPER, 'o' },
{ FLAG_LOCOP, 'O' },
{ FLAG_INVISIBLE, 'i' },
{ FLAG_WALLOP, 'w' },
{ FLAG_SERVNOTICE, 's' },
{ FLAG_DEAF, 'd' },
{ FLAG_CHSERV, 'k' },
{ FLAG_DEBUG, 'g' },
{ FLAG_ACCOUNT, 'r' },
{ FLAG_HIDDENHOST, 'x' }
};
#define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
/*
* XXX - find a way to get rid of this
*/
static char umodeBuf[BUFSIZE];
int set_nick_name(struct Client* cptr, struct Client* sptr,
const char* nick, int parc, char* parv[])
{
if (IsServer(sptr)) {
int i;
const char* account = 0;
const char* p;
/*
* A server introducing a new client, change source
*/
struct Client* new_client = make_client(cptr, STAT_UNKNOWN);
assert(0 != new_client);
cli_hopcount(new_client) = atoi(parv[2]);
cli_lastnick(new_client) = atoi(parv[3]);
if (Protocol(cptr) > 9 && parc > 7 && *parv[6] == '+') {
for (p = parv[6] + 1; *p; p++) {
for (i = 0; i < USERMODELIST_SIZE; ++i) {
if (userModeList[i].c == *p) {
SetFlag(new_client, userModeList[i].flag);
if (userModeList[i].flag == FLAG_ACCOUNT)
account = parv[7];
break;
}
}
}
}
client_set_privs(new_client); /* set privs on user */
/*
* Set new nick name.
*/
strcpy(cli_name(new_client), nick);
cli_user(new_client) = make_user(new_client);
cli_user(new_client)->server = sptr;
SetRemoteNumNick(new_client, parv[parc - 2]);
/*
* IP# of remote client
*/
cli_ip(new_client).s_addr = htonl(base64toint(parv[parc - 3]));
add_client_to_list(new_client);
hAddClient(new_client);
cli_serv(sptr)->ghost = 0; /* :server NICK means end of net.burst */
ircd_strncpy(cli_username(new_client), parv[4], USERLEN);
ircd_strncpy(cli_user(new_client)->host, parv[5], HOSTLEN);
ircd_strncpy(cli_user(new_client)->realhost, parv[5], HOSTLEN);
ircd_strncpy(cli_info(new_client), parv[parc - 1], REALLEN);
if (account)
ircd_strncpy(cli_user(new_client)->account, account, ACCOUNTLEN);
if (HasHiddenHost(new_client))
ircd_snprintf(0, cli_user(new_client)->host, HOSTLEN, "%s.%s",
account, feature_str(FEAT_HIDDEN_HOST));
return register_user(cptr, new_client, cli_name(new_client), parv[4]);
}
else if ((cli_name(sptr))[0]) {
/*
* Client changing its nick
*
* If the client belongs to me, then check to see
* if client is on any channels where it is currently
* banned. If so, do not allow the nick change to occur.
*/
if (MyUser(sptr)) {
const char* channel_name;
struct Membership *member;
if ((channel_name = find_no_nickchange_channel(sptr))) {
return send_reply(cptr, ERR_BANNICKCHANGE, channel_name);
}
/*
* Refuse nick change if the last nick change was less
* then 30 seconds ago. This is intended to get rid of
* clone bots doing NICK FLOOD. -SeKs
* If someone didn't change their nick for more then 60 seconds
* however, allow to do two nick changes immedately after another
* before limiting the nick flood. -Run
*/
if (CurrentTime < cli_nextnick(cptr)) {
cli_nextnick(cptr) += 2;
send_reply(cptr, ERR_NICKTOOFAST, parv[1],
cli_nextnick(cptr) - CurrentTime);
/* Send error message */
sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cli_name(cptr));
/* bounce NICK to user */
return 0; /* ignore nick change! */
}
else {
/* Limit total to 1 change per NICK_DELAY seconds: */
cli_nextnick(cptr) += NICK_DELAY;
/* However allow _maximal_ 1 extra consecutive nick change: */
if (cli_nextnick(cptr) < CurrentTime)
cli_nextnick(cptr) = CurrentTime;
}
/* Invalidate all bans against the user so we check them again */
for (member = (cli_user(cptr))->channel; member;
member = member->next_channel)
ClearBanValid(member);
}
/*
* Also set 'lastnick' to current time, if changed.
*/
if (0 != ircd_strcmp(parv[0], nick))
cli_lastnick(sptr) = (sptr == cptr) ? TStime() : atoi(parv[2]);
/*
* 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 (IsUser(sptr)) {
sendcmdto_common_channels_butone(sptr, CMD_NICK, NULL, ":%s", nick);
add_history(sptr, 1);
sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick,
cli_lastnick(sptr));
}
else
sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick);
if ((cli_name(sptr))[0])
hRemClient(sptr);
strcpy(cli_name(sptr), nick);
hAddClient(sptr);
}
else {
/* Local client setting NICK the first time */
strcpy(cli_name(sptr), nick);
if (!cli_user(sptr)) {
cli_user(sptr) = make_user(sptr);
cli_user(sptr)->server = &me;
}
hAddClient(sptr);
/*
* If the client hasn't gotten a cookie-ping yet,
* choose a cookie and send it. -record!jegelhof@cloud9.net
*/
if (!cli_cookie(sptr)) {
do {
cli_cookie(sptr) = (ircrandom() & 0x7fffffff);
} while (!cli_cookie(sptr));
sendrawto_one(cptr, MSG_PING " :%u", cli_cookie(sptr));
}
else if (*(cli_user(sptr))->host && cli_cookie(sptr) == COOKIE_VERIFIED) {
/*
* USER and PONG already received, now we have NICK.
* register_user may reject the client and call exit_client
* for it - must test this and exit m_nick too !
*/
cli_lastnick(sptr) = TStime(); /* Always local client */
if (register_user(cptr, sptr, nick, cli_user(sptr)->username) == CPTR_KILLED)
return CPTR_KILLED;
}
}
return 0;
}
static unsigned char hash_target(unsigned int target)
{
return (unsigned char) (target >> 16) ^ (target >> 8);
}
/*
* add_target
*
* sptr must be a local client!
*
* Cannonifies target for client `sptr'.
*/
void add_target(struct Client *sptr, void *target)
{
/* Ok, this shouldn't work esp on alpha
*/
unsigned char hash = hash_target((unsigned long) target);
unsigned char* targets;
int i;
assert(0 != sptr);
assert(cli_local(sptr));
targets = cli_targets(sptr);
/*
* Already in table?
*/
for (i = 0; i < MAXTARGETS; ++i) {
if (targets[i] == hash)
return;
}
/*
* New target
*/
memmove(&targets[RESERVEDTARGETS + 1],
&targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1);
targets[RESERVEDTARGETS] = hash;
}
/*
* check_target_limit
*
* sptr must be a local client !
*
* Returns 'true' (1) when too many targets are addressed.
* Returns 'false' (0) when it's ok to send to this target.
*/
int check_target_limit(struct Client *sptr, void *target, const char *name,
int created)
{
unsigned char hash = hash_target((unsigned long) target);
int i;
unsigned char* targets;
assert(0 != sptr);
assert(cli_local(sptr));
targets = cli_targets(sptr);
/* If user is invited to channel, give him/her a free target */
if (IsChannelName(name) && IsInvited(sptr, target))
return 0;
/*
* Same target as last time?
*/
if (targets[0] == hash)
return 0;
for (i = 1; i < MAXTARGETS; ++i) {
if (targets[i] == hash) {
memmove(&targets[1], &targets[0], i);
targets[0] = hash;
return 0;
}
}
/*
* New target
*/
if (!created) {
if (CurrentTime < cli_nexttarget(sptr)) {
if (cli_nexttarget(sptr) - CurrentTime < TARGET_DELAY + 8) {
/*
* No server flooding
*/
cli_nexttarget(sptr) += 2;
send_reply(sptr, ERR_TARGETTOOFAST, name,
cli_nexttarget(sptr) - CurrentTime);
}
return 1;
}
else {
cli_nexttarget(sptr) += TARGET_DELAY;
if (cli_nexttarget(sptr) < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)))
cli_nexttarget(sptr) = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1));
}
}
memmove(&targets[1], &targets[0], MAXTARGETS - 1);
targets[0] = hash;
return 0;
}
/*
* whisper - called from m_cnotice and m_cprivmsg.
*
* parv[0] = sender prefix
* parv[1] = nick
* parv[2] = #channel
* parv[3] = Private message text
*
* Added 971023 by Run.
* Reason: Allows channel operators to sent an arbitrary number of private
* messages to users on their channel, avoiding the max.targets limit.
* Building this into m_private would use too much cpu because we'd have
* to a cross channel lookup for every private message!
* Note that we can't allow non-chan ops to use this command, it would be
* abused by mass advertisers.
*
*/
int whisper(struct Client* source, const char* nick, const char* channel,
const char* text, int is_notice)
{
struct Client* dest;
struct Channel* chptr;
struct Membership* membership;
assert(0 != source);
assert(0 != nick);
assert(0 != channel);
assert(MyUser(source));
if (!(dest = FindUser(nick))) {
return send_reply(source, ERR_NOSUCHNICK, nick);
}
if (!(chptr = FindChannel(channel))) {
return send_reply(source, ERR_NOSUCHCHANNEL, channel);
}
/*
* compare both users channel lists, instead of the channels user list
* since the link is the same, this should be a little faster for channels
* with a lot of users
*/
for (membership = cli_user(source)->channel; membership; membership = membership->next_channel) {
if (chptr == membership->channel)
break;
}
if (0 == membership) {
return send_reply(source, ERR_NOTONCHANNEL, chptr->chname);
}
if (!IsVoicedOrOpped(membership)) {
return send_reply(source, ERR_VOICENEEDED, chptr->chname);
}
/*
* lookup channel in destination
*/
assert(0 != cli_user(dest));
for (membership = cli_user(dest)->channel; membership; membership = membership->next_channel) {
if (chptr == membership->channel)
break;
}
if (0 == membership || IsZombie(membership)) {
return send_reply(source, ERR_USERNOTINCHANNEL, cli_name(dest), chptr->chname);
}
if (is_silenced(source, dest))
return 0;
if (cli_user(dest)->away)
send_reply(source, RPL_AWAY, cli_name(dest), cli_user(dest)->away);
if (is_notice)
sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text);
else
sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text);
return 0;
}
/*
* added Sat Jul 25 07:30:42 EST 1992
*/
void send_umode_out(struct Client *cptr, struct Client *sptr, struct Flags *old,
int prop)
{
int i;
struct Client *acptr;
send_umode(NULL, sptr, old, prop ? SEND_UMODES : SEND_UMODES_BUT_OPER);
for (i = HighestFd; i >= 0; i--) {
if ((acptr = LocalClientArray[i]) && IsServer(acptr) &&
(acptr != cptr) && (acptr != sptr) && *umodeBuf)
sendcmdto_one(sptr, CMD_MODE, acptr, "%s :%s", cli_name(sptr), umodeBuf);
}
if (cptr && MyUser(cptr))
send_umode(cptr, sptr, old, ALL_UMODES);
}
/*
* send_user_info - send user info userip/userhost
* NOTE: formatter must put info into buffer and return a pointer to the end of
* the data it put in the buffer.
*/
void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt)
{
char* name;
char* p = 0;
int arg_count = 0;
int users_found = 0;
struct Client* acptr;
struct MsgBuf* mb;
assert(0 != sptr);
assert(0 != names);
assert(0 != fmt);
mb = msgq_make(sptr, rpl_str(rpl), cli_name(&me), cli_name(sptr));
for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) {
if ((acptr = FindUser(name))) {
if (users_found++)
msgq_append(0, mb, " ");
(*fmt)(acptr, sptr, mb);
}
if (5 == ++arg_count)
break;
}
send_buffer(sptr, mb, 0);
msgq_clean(mb);
}
/*
* hide_hostmask()
*
* If, after setting the flags, the user has both HiddenHost and Account
* set, its hostmask is changed.
*/
int hide_hostmask(struct Client *cptr, unsigned int flag)
{
struct Membership *chan;
if (MyConnect(cptr) && !feature_bool(FEAT_HOST_HIDING) && (flag == FLAG_HIDDENHOST))
return 0;
/* Invalidate all bans against the user so we check them again */
for (chan = (cli_user(cptr))->channel; chan;
chan = chan->next_channel)
ClearBanValid(chan);
if (((flag == FLAG_HIDDENHOST) && !HasFlag(cptr, FLAG_ACCOUNT))
|| ((flag == FLAG_ACCOUNT) && !HasFlag(cptr, FLAG_HIDDENHOST))) {
/* The user doesn't have both flags, don't change the hostmask */
SetFlag(cptr, flag);
return 0;
}
sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Registered");
ircd_snprintf(0, cli_user(cptr)->host, HOSTLEN, "%s.%s",
cli_user(cptr)->account, feature_str(FEAT_HIDDEN_HOST));
SetFlag(cptr, flag);
/* ok, the client is now fully hidden, so let them know -- hikari */
if (MyConnect(cptr))
send_reply(cptr, RPL_HOSTHIDDEN, cli_user(cptr)->account,
feature_str(FEAT_HIDDEN_HOST));
/*
* Go through all channels the client was on, rejoin him
* and set the modes, if any
*/
for (chan = cli_user(cptr)->channel; chan; chan = chan->next_channel) {
if (IsZombie(chan))
continue;
sendcmdto_channel_butserv_butone(cptr, CMD_JOIN, chan->channel, cptr,
"%H", chan->channel);
if (IsChanOp(chan) && HasVoice(chan)) {
sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr,
"%H +ov %C %C", chan->channel, cptr, cptr);
} else if (IsChanOp(chan) || HasVoice(chan)) {
sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr,
"%H +%c %C", chan->channel, IsChanOp(chan) ? 'o' : 'v', cptr);
}
}
return 0;
}
/*
* set_user_mode() added 15/10/91 By Darren Reed.
*
* parv[0] - sender
* parv[1] - username to change mode for
* parv[2] - modes to change
*/
int set_user_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
char** p;
char* m;
struct Client *acptr;
int what;
int i;
struct Flags setflags;
unsigned int tmpmask = 0;
int snomask_given = 0;
char buf[BUFSIZE];
int prop = 0;
int do_host_hiding = 0;
what = MODE_ADD;
if (parc < 2)
return need_more_params(sptr, "MODE");
if (!(acptr = FindUser(parv[1])))
{
if (MyConnect(sptr))
send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
return 0;
}
if (IsServer(sptr) || sptr != acptr)
{
if (IsServer(cptr))
sendwallto_group_butone(&me, WALL_WALLOPS, 0,
"MODE for User %s from %s!%s", parv[1],
cli_name(cptr), cli_name(sptr));
else
send_reply(sptr, ERR_USERSDONTMATCH);
return 0;
}
if (parc < 3)
{
m = buf;
*m++ = '+';
for (i = 0; i < USERMODELIST_SIZE; ++i) {
if (HasFlag(sptr, userModeList[i].flag) &&
(userModeList[i].flag != FLAG_ACCOUNT))
*m++ = userModeList[i].c;
}
*m = '\0';
send_reply(sptr, RPL_UMODEIS, buf);
if (HasFlag(sptr, FLAG_SERVNOTICE) && MyConnect(sptr)
&& cli_snomask(sptr) !=
(unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT))
send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
return 0;
}
/*
* find flags already set for user
* why not just copy them?
*/
setflags = cli_flags(sptr);
if (MyConnect(sptr))
tmpmask = cli_snomask(sptr);
/*
* parse mode change string(s)
*/
for (p = &parv[2]; *p; p++) { /* p is changed in loop too */
for (m = *p; *m; m++) {
switch (*m) {
case '+':
what = MODE_ADD;
break;
case '-':
what = MODE_DEL;
break;
case 's':
if (*(p + 1) && is_snomask(*(p + 1))) {
snomask_given = 1;
tmpmask = umode_make_snomask(tmpmask, *++p, what);
tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER);
}
else
tmpmask = (what == MODE_ADD) ?
(IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0;
if (tmpmask)
SetServNotice(sptr);
else
ClearServNotice(sptr);
break;
case 'w':
if (what == MODE_ADD)
SetWallops(sptr);
else
ClearWallops(sptr);
break;
case 'o':
if (what == MODE_ADD)
SetOper(sptr);
else {
ClrFlag(sptr, FLAG_OPER);
ClrFlag(sptr, FLAG_LOCOP);
if (MyConnect(sptr)) {
tmpmask = cli_snomask(sptr) & ~SNO_OPER;
cli_handler(sptr) = CLIENT_HANDLER;
}
}
break;
case 'O':
if (what == MODE_ADD)
SetLocOp(sptr);
else {
ClrFlag(sptr, FLAG_OPER);
ClrFlag(sptr, FLAG_LOCOP);
if (MyConnect(sptr)) {
tmpmask = cli_snomask(sptr) & ~SNO_OPER;
cli_handler(sptr) = CLIENT_HANDLER;
}
}
break;
case 'i':
if (what == MODE_ADD)
SetInvisible(sptr);
else
ClearInvisible(sptr);
break;
case 'd':
if (what == MODE_ADD)
SetDeaf(sptr);
else
ClearDeaf(sptr);
break;
case 'k':
if (what == MODE_ADD)
SetChannelService(sptr);
else
ClearChannelService(sptr);
break;
case 'g':
if (what == MODE_ADD)
SetDebug(sptr);
else
ClearDebug(sptr);
break;
case 'x':
if (what == MODE_ADD)
do_host_hiding = 1;
break;
/* if none of the given case is valid then compain by
* sending raw 501 ( ERR_UMODEUNKNOWNFLAG )
*/
default: send_reply(sptr, ERR_UMODEUNKNOWNFLAG, *m);
break;
}
}
}
/*
* Evaluate rules for new user mode
* Stop users making themselves operators too easily:
*/
if (!IsServer(cptr)) {
if (!FlagHas(&setflags, FLAG_OPER) && IsOper(sptr))
ClearOper(sptr);
if (!FlagHas(&setflags, FLAG_LOCOP) && IsLocOp(sptr))
ClearLocOp(sptr);
/*
* new umode; servers can set it, local users cannot;
* prevents users from /kick'ing or /mode -o'ing
*/
if (!FlagHas(&setflags, FLAG_CHSERV))
ClearChannelService(sptr);
/*
* only send wallops to opers
*/
if (feature_bool(FEAT_WALLOPS_OPER_ONLY) && !IsAnOper(sptr) &&
!FlagHas(&setflags, FLAG_WALLOP))
ClearWallops(sptr);
if (feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY) && MyConnect(sptr) &&
!IsAnOper(sptr) && !FlagHas(&setflags, FLAG_SERVNOTICE)) {
ClearServNotice(sptr);
set_snomask(sptr, 0, SNO_SET);
}
if (feature_bool(FEAT_HIS_DEBUG_OPER_ONLY) && !IsAnOper(sptr) &&
!FlagHas(&setflags, FLAG_DEBUG))
ClearDebug(sptr);
}
if (MyConnect(sptr)) {
if ((FlagHas(&setflags, FLAG_OPER) || FlagHas(&setflags, FLAG_LOCOP)) &&
!IsAnOper(sptr))
det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPS);
if (SendServNotice(sptr)) {
if (tmpmask != cli_snomask(sptr))
set_snomask(sptr, tmpmask, SNO_SET);
if (cli_snomask(sptr) && snomask_given)
send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
} else
set_snomask(sptr, 0, SNO_SET);
}
/*
* Compare new flags with old flags and send string which
* will cause servers to update correctly.
*/
if (!FlagHas(&setflags, FLAG_OPER) && IsOper(sptr)) { /* user now oper */
++UserStats.opers;
client_set_privs(sptr); /* may set propagate privilege */
}
if (HasPriv(sptr, PRIV_PROPAGATE)) /* remember propagate privilege setting */
prop = 1;
if (FlagHas(&setflags, FLAG_OPER) && !IsOper(sptr)) { /* user no longer oper */
--UserStats.opers;
client_set_privs(sptr); /* will clear propagate privilege */
}
if (FlagHas(&setflags, FLAG_INVISIBLE) && !IsInvisible(sptr))
--UserStats.inv_clients;
if (!FlagHas(&setflags, FLAG_INVISIBLE) && IsInvisible(sptr))
++UserStats.inv_clients;
if (!FlagHas(&setflags, FLAG_HIDDENHOST) && do_host_hiding)
hide_hostmask(sptr, FLAG_HIDDENHOST);
send_umode_out(cptr, sptr, &setflags, prop);
return 0;
}
/*
* Build umode string for BURST command
* --Run
*/
char *umode_str(struct Client *cptr)
{
char* m = umodeBuf; /* Maximum string size: "owidgrx\0" */
int i;
struct Flags c_flags;
c_flags = cli_flags(cptr);
if (HasPriv(cptr, PRIV_PROPAGATE))
FlagSet(&c_flags, FLAG_OPER);
else
FlagClr(&c_flags, FLAG_OPER);
for (i = 0; i < USERMODELIST_SIZE; ++i) {
if (FlagHas(&c_flags, userModeList[i].flag) &&
(userModeList[i].flag >= FLAG_GLOBAL_UMODES))
*m++ = userModeList[i].c;
}
if (IsAccount(cptr)) {
char* t = cli_user(cptr)->account;
*m++ = ' ';
while ((*m++ = *t++))
; /* Empty loop */
}
*m = '\0';
return umodeBuf; /* Note: static buffer, gets
overwritten by send_umode() */
}
/*
* Send the MODE string for user (sptr) to connection cptr
* -avalon
*/
void send_umode(struct Client *cptr, struct Client *sptr, struct Flags *old, int sendset)
{
int i;
int flag;
char *m;
int what = MODE_NULL;
/*
* Build a string in umodeBuf to represent the change in the user's
* mode between the new (cli_flags(sptr)) and 'old', but skipping
* the modes indicated by sendset.
*/
m = umodeBuf;
*m = '\0';
for (i = 0; i < USERMODELIST_SIZE; ++i) {
flag = userModeList[i].flag;
if (FlagHas(old, flag) == HasFlag(sptr, flag))
continue;
switch (sendset)
{
case ALL_UMODES:
break;
case SEND_UMODES_BUT_OPER:
if (flag == FLAG_OPER)
continue;
/* and fall through */
case SEND_UMODES:
if (flag < FLAG_GLOBAL_UMODES)
continue;
break;
}
if (FlagHas(old, flag))
{
if (what == MODE_DEL)
*m++ = userModeList[i].c;
else
{
what = MODE_DEL;
*m++ = '-';
*m++ = userModeList[i].c;
}
}
else /* !FlagHas(old, flag) */
{
if (what == MODE_ADD)
*m++ = userModeList[i].c;
else
{
what = MODE_ADD;
*m++ = '+';
*m++ = userModeList[i].c;
}
}
}
*m = '\0';
if (*umodeBuf && cptr)
sendcmdto_one(sptr, CMD_MODE, cptr, "%s :%s", cli_name(sptr), umodeBuf);
}
/*
* Check to see if this resembles a sno_mask. It is if 1) there is
* at least one digit and 2) The first digit occurs before the first
* alphabetic character.
*/
int is_snomask(char *word)
{
if (word)
{
for (; *word; word++)
if (IsDigit(*word))
return 1;
else if (IsAlpha(*word))
return 0;
}
return 0;
}
/*
* If it begins with a +, count this as an additive mask instead of just
* a replacement. If what == MODE_DEL, "+" has no special effect.
*/
unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what)
{
unsigned int sno_what;
unsigned int newmask;
if (*arg == '+')
{
arg++;
if (what == MODE_ADD)
sno_what = SNO_ADD;
else
sno_what = SNO_DEL;
}
else if (*arg == '-')
{
arg++;
if (what == MODE_ADD)
sno_what = SNO_DEL;
else
sno_what = SNO_ADD;
}
else
sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL;
/* pity we don't have strtoul everywhere */
newmask = (unsigned int)atoi(arg);
if (sno_what == SNO_DEL)
newmask = oldmask & ~newmask;
else if (sno_what == SNO_ADD)
newmask |= oldmask;
return newmask;
}
static void delfrom_list(struct Client *cptr, struct SLink **list)
{
struct SLink* tmp;
struct SLink* prv = NULL;
for (tmp = *list; tmp; tmp = tmp->next) {
if (tmp->value.cptr == cptr) {
if (prv)
prv->next = tmp->next;
else
*list = tmp->next;
free_link(tmp);
break;
}
prv = tmp;
}
}
/*
* This function sets a Client's server notices mask, according to
* the parameter 'what'. This could be even faster, but the code
* gets mighty hard to read :)
*/
void set_snomask(struct Client *cptr, unsigned int newmask, int what)
{
unsigned int oldmask, diffmask; /* unsigned please */
int i;
struct SLink *tmp;
oldmask = cli_snomask(cptr);
if (what == SNO_ADD)
newmask |= oldmask;
else if (what == SNO_DEL)
newmask = oldmask & ~newmask;
else if (what != SNO_SET) /* absolute set, no math needed */
sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what);
newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER);
diffmask = oldmask ^ newmask;
for (i = 0; diffmask >> i; i++) {
if (((diffmask >> i) & 1))
{
if (((newmask >> i) & 1))
{
tmp = make_link();
tmp->next = opsarray[i];
tmp->value.cptr = cptr;
opsarray[i] = tmp;
}
else
/* not real portable :( */
delfrom_list(cptr, &opsarray[i]);
}
}
cli_snomask(cptr) = newmask;
}
/*
* is_silenced : Does the actual check wether sptr is allowed
* to send a message to acptr.
* Both must be registered persons.
* If sptr is silenced by acptr, his message should not be propagated,
* but more over, if this is detected on a server not local to sptr
* the SILENCE mask is sent upstream.
*/
int is_silenced(struct Client *sptr, struct Client *acptr)
{
struct SLink *lp;
struct User *user;
static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
static char senderip[16 + NICKLEN + USERLEN + 5];
static char senderh[HOSTLEN + ACCOUNTLEN + USERLEN + 6];
if (!cli_user(acptr) || !(lp = cli_user(acptr)->silence) || !(user = cli_user(sptr)))
return 0;
ircd_snprintf(0, sender, sizeof(sender), "%s!%s@%s", cli_name(sptr),
user->username, user->host);
ircd_snprintf(0, senderip, sizeof(senderip), "%s!%s@%s", cli_name(sptr),
user->username, ircd_ntoa((const char*) &(cli_ip(sptr))));
if (HasHiddenHost(sptr))
ircd_snprintf(0, senderh, sizeof(senderh), "%s!%s@%s", cli_name(sptr),
user->username, user->realhost);
for (; lp; lp = lp->next)
{
if ((!(lp->flags & CHFL_SILENCE_IPMASK) && (!match(lp->value.cp, sender) ||
(HasHiddenHost(sptr) && !match(lp->value.cp, senderh)))) ||
((lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, senderip)))
{
if (!MyConnect(sptr))
{
sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr,
lp->value.cp);
}
return 1;
}
}
return 0;
}
/*
* del_silence
*
* Removes all silence masks from the list of sptr that fall within `mask'
* Returns -1 if none where found, 0 otherwise.
*/
int del_silence(struct Client *sptr, char *mask)
{
struct SLink **lp;
struct SLink *tmp;
int ret = -1;
for (lp = &(cli_user(sptr))->silence; *lp;) {
if (!mmatch(mask, (*lp)->value.cp))
{
tmp = *lp;
*lp = tmp->next;
MyFree(tmp->value.cp);
free_link(tmp);
ret = 0;
}
else
lp = &(*lp)->next;
}
return ret;
}
int add_silence(struct Client* sptr, const char* mask)
{
struct SLink *lp, **lpp;
int cnt = 0, len = strlen(mask);
char *ip_start;
for (lpp = &(cli_user(sptr))->silence, lp = *lpp; lp;)
{
if (0 == ircd_strcmp(mask, lp->value.cp))
return -1;
if (!mmatch(mask, lp->value.cp))
{
struct SLink *tmp = lp;
*lpp = lp = lp->next;
MyFree(tmp->value.cp);
free_link(tmp);
continue;
}
if (MyUser(sptr))
{
len += strlen(lp->value.cp);
if ((len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXSILES))) ||
(++cnt >= feature_int(FEAT_MAXSILES)))
{
send_reply(sptr, ERR_SILELISTFULL, mask);
return -1;
}
else if (!mmatch(lp->value.cp, mask))
return -1;
}
lpp = &lp->next;
lp = *lpp;
}
lp = make_link();
memset(lp, 0, sizeof(struct SLink));
lp->next = cli_user(sptr)->silence;
lp->value.cp = (char*) MyMalloc(strlen(mask) + 1);
assert(0 != lp->value.cp);
strcpy(lp->value.cp, mask);
if ((ip_start = strrchr(mask, '@')) && check_if_ipmask(ip_start + 1))
lp->flags = CHFL_SILENCE_IPMASK;
cli_user(sptr)->silence = lp;
return 0;
}
int
send_supported(struct Client *cptr)
{
char featurebuf[512];
ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES1, FEATURESVALUES1);
send_reply(cptr, RPL_ISUPPORT, featurebuf);
ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES2, FEATURESVALUES2);
send_reply(cptr, RPL_ISUPPORT, featurebuf);
return 0; /* convenience return, if it's ever needed */
}
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