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actions.c
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actions.c
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/* Chatnet K9 Channel Services
**
** Based on ircdservices ver. by Andy Church
** Chatnet modifications (c) 2001-2002
**
** E-mail: routing@lists.chatnet.org
** Authors:
**
** Vampire (vampire@alias.chatnet.org)
** Thread (thread@alias.chatnet.org)
** MRX (tom@rooted.net)
**
** *** DO NOT DISTRIBUTE ***
**/
#include "services.h"
#include "language.h"
#include "timeout.h"
/*************************************************************************/
/* Note a bad password attempt for the given user from the given service.
* If they've used up their limit, toss them off. "service" is used only
* for the sender of the bad-password message. "what" describes what the
* password was for, and is used in the kill message if the user is killed.
*/
void bad_password(const char *service, User *u, const char *what)
{
time_t now = time(NULL);
notice_lang(service, u, PASSWORD_INCORRECT);
if (!BadPassLimit)
return;
if (BadPassTimeout > 0 && u->invalid_pw_time > 0
&& now >= u->invalid_pw_time + BadPassTimeout)
u->invalid_pw_count = 0;
u->invalid_pw_count++;
u->invalid_pw_time = now;
if (u->invalid_pw_count >= BadPassLimit) {
char buf[BUFSIZE];
snprintf(buf, sizeof(buf), "Too many invalid passwords (%s)", what);
kill_user(NULL, u->nick, buf);
}
}
/*************************************************************************/
/* Clear modes/users from a channel. The "what" parameter is one or more
* of the CLEAR_* constants defined in services.h. "param" is:
* - for CLEAR_USERS, a kick message (const char *)
* - for CLEAR_UMODES, a bitmask of modes to clear (int32)
* - for CLEAR_BANS and CLEAR_EXCEPTS, a User * to match masks agains,
* or NULL to mean "all bans/exceptions"
*/
static void clear_modes(Channel *chan);
static void clear_bans(Channel *chan, User *u);
static void clear_excepts(Channel *chan, User *u);
static void clear_umodes(Channel *chan, int32 modes);
static void clear_users(Channel *chan, const char *reason);
void clear_channel(Channel *chan, int what, const void *param)
{
if (what & CLEAR_USERS) {
clear_users(chan, (const char *)param);
/* Once we kick all the users, nothing else will matter */
return;
}
if (what & CLEAR_MODES)
clear_modes(chan);
if (what & CLEAR_BANS)
clear_bans(chan, (User *)param);
if (what & CLEAR_EXCEPTS)
clear_excepts(chan, (User *)param);
if (what & CLEAR_UMODES)
clear_umodes(chan, (int32)param);
send_cmode(NULL); /* Flush modes out */
}
static void clear_modes(Channel *chan)
{
char *av[3];
char buf[40];
snprintf(buf, sizeof(buf), "-%s",
mode_flags_to_string(MODE_ALL & ~CMODE_REG, MODE_CHANNEL));
av[0] = chan->name;
av[1] = buf;
if (chan->key)
av[2] = chan->key;
else
av[2] = "";
send_cmode(MODE_SENDER(s_ChanServ), av[0], av[1], av[2]);
do_cmode(s_ChanServ, 3, av);
check_modes(chan->name);
}
static void clear_bans(Channel *chan, User *u)
{
char *av[3];
int i, count;
char **bans;
if (!chan->bancount)
return;
/* Save original ban info */
count = chan->bancount;
bans = smalloc(sizeof(char *) * count);
memcpy(bans, chan->bans, sizeof(char *) * count);
av[0] = chan->name;
av[1] = "-b";
for (i = 0; i < count; i++) {
if (!u || match_usermask(bans[i], u)) {
av[2] = bans[i];
send_cmode(MODE_SENDER(s_ChanServ), av[0], av[1], av[2]);
do_cmode(s_ChanServ, 3, av);
}
}
free(bans);
}
static void clear_excepts(Channel *chan, User *u)
{
#ifdef HAVE_BANEXCEPT
char *av[3];
int i, count;
char **excepts;
if (!chan->exceptcount)
return;
count = chan->exceptcount;
excepts = smalloc(sizeof(char *) * count);
memcpy(excepts, chan->excepts, sizeof(char *) * count);
av[0] = chan->name;
av[1] = "-e";
for (i = 0; i < count; i++) {
if (!u || match_usermask(excepts[i], u)) {
av[2] = excepts[i];
send_cmode(MODE_SENDER(s_ChanServ), av[0], av[1], av[2]);
do_cmode(s_ChanServ, 3, av);
}
}
free(excepts);
#endif
}
static void clear_umodes(Channel *chan, int32 modes)
{
struct c_userlist *cu;
for (cu = chan->users; cu; cu = cu->next) {
if (cu->mode & modes) {
char buf[40];
snprintf(buf, sizeof(buf), "-%s",
mode_flags_to_string(cu->mode & modes, MODE_CHANUSER));
send_cmode(MODE_SENDER(s_ChanServ), chan->name, buf,
cu->user->nick);
cu->mode &= ~modes;
}
}
}
static void clear_users(Channel *chan, const char *reason)
{
struct c_userlist *cu, *next;
char *av[3];
/* Prevent anyone from coming back in. The ban will disappear
* once everyone's gone. */
#if defined(IRC_BAHAMUT) || defined(IRC_UNREAL)
send_cmd(ServerName, "SJOIN %ld %s + :",
chan->creation_time-1, chan->name);
#elif defined(HAS_BANEXCEPT)
clear_excepts(chan, NULL);
#endif
send_cmode(MODE_SENDER(s_ChanServ), chan->name, "+b", "*!*@*");
send_cmode(NULL); /* Flush modes out */
av[0] = chan->name;
av[2] = (char *)reason;
for (cu = chan->users; cu; cu = next) {
next = cu->next;
av[1] = cu->user->nick;
send_cmd(MODE_SENDER(s_ChanServ), "KICK %s %s :%s",
av[0], av[1], av[2]);
do_kick(s_ChanServ, 3, av);
}
}
/*************************************************************************/
/* Remove a user from the IRC network. `source' is the nick which should
* generate the kill, or NULL for a server-generated kill.
*/
void kill_user(const char *source, const char *user, const char *reason)
{
char *av[2];
char buf[BUFSIZE];
if (!user || !*user)
return;
if (!source || !*source)
source = ServerName;
if (!reason)
reason = "";
snprintf(buf, sizeof(buf), "%s (%s)", source, reason);
av[0] = (char *)user;
av[1] = buf;
send_cmd(source, "KILL %s :%s", user, av[1]);
do_kill(source, 2, av);
}
/*************************************************************************/
/* Set the topic on a channel. `setter' must not be NULL. */
void set_topic(Channel *c, const char *topic, const char *setter, time_t t)
{
if (c->topic)
free(c->topic);
if (topic && *topic)
c->topic = sstrdup(topic);
else
c->topic = NULL;
strscpy(c->topic_setter, setter, NICKMAX);
/* Make sure topic_time is not zero */
if (!c->topic_time)
c->topic_time = time(NULL);
#ifdef IRC_UNREAL
if (t <= c->topic_time)
t = c->topic_time + 1; /* Force topic change */
#elif defined(IRC_TS8) || (defined(IRC_DALNET) && !defined(IRC_BAHAMUT))
if (t >= c->topic_time)
t = c->topic_time - 1; /* Force topic change */
#endif
c->topic_time = t;
#ifdef IRC_CLASSIC
send_cmd(MODE_SENDER(s_ChanServ), "TOPIC %s %s :%s", c->name,
c->topic_setter, c->topic ? c->topic : "");
#elif defined(IRC_UNREAL)
/* FIXME: using s_ChanServ sometimes gives "not on channel"? U-line
* setting problem? */
send_cmd(ServerName, "TOPIC %s %s %lu :%s", c->name,
c->topic_setter, c->topic_time, c->topic ? c->topic : "");
#else
send_cmd(MODE_SENDER(s_ChanServ), "TOPIC %s %s %lu :%s", c->name,
c->topic_setter, c->topic_time, c->topic ? c->topic : "");
#endif
}
/*************************************************************************/
/*************************************************************************/
/* send_cmode(): Send modes for a channel. Using this routine allows the
* modes for a channel to be collected up over several calls and sent out
* in a single command, decreasing network traffic (and scroll).
* This function should be called as either:
* send_cmode(sender, channel, modes, param1, param2...)
* to send a channel mode, or
* send_cmode(NULL)
* to flush all buffered modes.
*/
#define MAXMODES 6
#define MAXPARAMSLEN (510-NICKMAX-CHANMAX-34-(7+MAXMODES))
static struct modedata {
time_t used;
int last_add;
char channel[CHANMAX];
char sender[NICKMAX];
int32 binmodes_on;
int32 binmodes_off;
char opmodes[MAXMODES*2+1];
char params[BUFSIZE];
int nparams;
int paramslen;
Timeout *timeout; /* For timely flushing */
} modedata[MERGE_CHANMODES_MAX];
static void flush_cmode(struct modedata *md);
static void flush_cmode_callback(Timeout *t);
void send_cmode(const char *sender, ...)
{
va_list args;
const char *channel, *modes;
struct modedata *md;
int which = -1, add;
int32 flag;
int i;
char c, *s;
if (!sender) {
for (i = 0; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used)
flush_cmode(&modedata[i]);
}
return;
}
va_start(args, sender);
channel = va_arg(args, const char *);
modes = va_arg(args, const char *);
for (i = 0; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used != 0
&& irc_stricmp(modedata[i].channel, channel) == 0
) {
if (irc_stricmp(modedata[i].sender, sender) != 0)
flush_cmode(&modedata[i]);
which = i;
break;
}
}
if (which < 0) {
for (i = 0; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used == 0) {
which = i;
modedata[which].last_add = -1;
break;
}
}
}
if (which < 0) {
int oldest = 0;
time_t oldest_time = modedata[0].used;
for (i = 1; i < MERGE_CHANMODES_MAX; i++) {
if (modedata[i].used < oldest_time) {
oldest_time = modedata[i].used;
oldest = i;
}
}
flush_cmode(&modedata[oldest]);
which = oldest;
modedata[which].last_add = -1;
}
md = &modedata[which];
strscpy(md->sender, sender, NICKMAX);
strscpy(md->channel, channel, CHANMAX);
add = -1;
while ((c = *modes++) != 0) {
if (c == '+') {
add = 1;
continue;
} else if (c == '-') {
add = 0;
continue;
} else if (add < 0) {
continue;
}
switch (c) {
case 'k':
case 'l':
case 'o':
case 'v':
#ifdef HAVE_HALFOP
case 'h':
#endif
#ifdef IRC_UNREAL
case 'a':
case 'q':
#endif
case 'b':
#ifdef HAVE_BANEXCEPT
case 'e':
#endif
if (md->nparams >= MAXMODES || md->paramslen >= MAXPARAMSLEN) {
flush_cmode(&modedata[which]);
md->used = time(NULL);
}
s = md->opmodes + strlen(md->opmodes);
if (add != md->last_add) {
*s++ = add ? '+' : '-';
md->last_add = add;
}
*s++ = c;
if (!add && c == 'l')
break;
s = va_arg(args, char *);
md->paramslen +=
snprintf(md->params+md->paramslen,MAXPARAMSLEN+1-md->paramslen,
"%s%s", md->paramslen ? " " : "", s);
md->nparams++;
break;
default:
flag = mode_char_to_flag(c, MODE_CHANNEL);
if (add) {
md->binmodes_on |= flag;
md->binmodes_off &= ~flag;
} else {
md->binmodes_off |= flag;
md->binmodes_on &= ~flag;
}
}
}
va_end(args);
md->used = time(NULL);
if (MergeChannelModes) {
if (!md->timeout) {
md->timeout = add_timeout_ms(MergeChannelModes,
flush_cmode_callback, 0);
md->timeout->data = md;
}
} else {
flush_cmode(md);
}
}
static void flush_cmode(struct modedata *md)
{
char buf[BUFSIZE];
int len = 0;
char lastc = 0;
if (md->timeout)
del_timeout(md->timeout);
if (!md->binmodes_on && !md->binmodes_off && !*md->opmodes)
goto done; /* No actual modes here */
/* Note that - must come before + because some servers (Unreal, others?)
* ignore +s if followed by -p. */
if (md->binmodes_off) {
len += snprintf(buf+len, sizeof(buf)-len, "-%s",
mode_flags_to_string(md->binmodes_off, MODE_CHANNEL));
lastc = '-';
}
if (md->binmodes_on) {
len += snprintf(buf+len, sizeof(buf)-len, "+%s",
mode_flags_to_string(md->binmodes_on, MODE_CHANNEL));
lastc = '+';
}
if (*md->opmodes) {
if (*md->opmodes == lastc) {
/* First +/- matches last binary mode change */
memmove(md->opmodes, md->opmodes+1, strlen(md->opmodes+1)+1);
}
len += snprintf(buf+len, sizeof(buf)-len, "%s", md->opmodes);
}
if (md->paramslen)
snprintf(buf+len, sizeof(buf)-len, " %s", md->params);
send_cmd(md->sender, "MODE %s %s", md->channel, buf);
done:
memset(md, 0, sizeof(*md));
md->last_add = -1;
}
static void flush_cmode_callback(Timeout *t)
{
flush_cmode((struct modedata *)t->data);
}
/*************************************************************************/
void email_pass(char *email, char *pass, char *name) {
char *efile = "emails/password-emails.txt";
FILE *efp;
if (!email || !pass || !name)
return;
if ((efp = fopen(efile, "a+")) == NULL ) {
log("ERROR: could not open file [%s] to write emails to", efile);
return;
}
fprintf(efp, "%s %s %s\n", email, pass, name);
fclose(efp);
}