/** ban_check_mask - Checks if the current user in ban checking (ban_ip, etc) matches the specified n!u@h mask -or- run an extended ban.
* @param sptr Client to check (can be remote client)
* @param chptr Channel to check
* @param banstr Mask string to check user
* @param type Type of ban to check for (BANCHK_*)
* @param no_extbans 0 to check extbans, nonzero to disable extban checking.
* @returns Nonzero if the mask/extban succeeds. Zero if it doesn't.
* @comments This is basically extracting the mask and extban check from is_banned_with_nick, but with being a bit more strict in what an extban is.
* Strange things could happen if this is called outside standard ban checking.
*/
inline int ban_check_mask(aClient *sptr, aChannel *chptr, char *banstr, int type, int no_extbans)
{
Extban *extban = NULL;
if (!no_extbans && banstr[0] == '~' && banstr[1] != '\0' && banstr[2] == ':')
{
/* Is an extended ban. */
extban = findmod_by_bantype(banstr[1]);
if (!extban)
{
return 0;
}
else
{
return extban->is_banned(sptr, chptr, banstr, type);
}
}
else
{
/* Is a n!u@h mask. */
return extban_is_banned_helper(banstr);
}
}
/** is_banned_with_nick - Check if a user is banned on a channel.
* @param sptr Client to check (can be remote client)
* @param chptr Channel to check
* @param type Type of ban to check for (BANCHK_*)
* @param nick Nick of the user
* @returns A pointer to the ban struct if banned, otherwise NULL.
*/
Ban *is_banned_with_nick(aClient *sptr, aChannel *chptr, int type, char *nick)
{
Ban *tmp, *tmp2;
char *s;
static char realhost[NICKLEN + USERLEN + HOSTLEN + 24];
static char cloakhost[NICKLEN + USERLEN + HOSTLEN + 24];
static char virthost[NICKLEN + USERLEN + HOSTLEN + 24];
static char nuip[NICKLEN + USERLEN + HOSTLEN + 24];
int dovirt = 0, mine = 0;
Extban *extban;
if (!IsPerson(sptr) || !chptr->banlist)
return NULL;
ban_realhost = realhost;
ban_ip = ban_virthost = ban_cloakhost = NULL;
if (MyConnect(sptr))
{
mine = 1;
make_nick_user_host_r(nuip, nick, sptr->user->username, GetIP(sptr));
ban_ip = nuip;
make_nick_user_host_r(cloakhost, nick, sptr->user->username, sptr->user->cloakedhost);
ban_cloakhost = cloakhost;
}
if (IsSetHost(sptr) && strcmp(sptr->user->realhost, sptr->user->virthost))
{
dovirt = 1;
make_nick_user_host_r(virthost, nick, sptr->user->username, sptr->user->virthost);
ban_virthost = virthost;
}
make_nick_user_host_r(realhost, nick, sptr->user->username, sptr->user->realhost);
/* We now check +b first, if a +b is found we then see if there is a +e.
* If a +e was found we return NULL, if not, we return the ban.
*/
for (tmp = chptr->banlist; tmp; tmp = tmp->next)
{
if (*tmp->banstr == '~')
{
extban = findmod_by_bantype(tmp->banstr[1]);
if (!extban)
continue;
if (!extban->is_banned(sptr, chptr, tmp->banstr, type))
continue;
} else {
if ((match(tmp->banstr, realhost) == 0) ||
(dovirt && (match(tmp->banstr, virthost) == 0)) ||
(mine && (match(tmp->banstr, nuip) == 0)) ||
(mine && (match(tmp->banstr, cloakhost) == 0)) )
{
/* matches.. do nothing */
} else
continue;
}
/* Ban found, now check for +e */
for (tmp2 = chptr->exlist; tmp2; tmp2 = tmp2->next)
{
if (*tmp2->banstr == '~')
{
extban = findmod_by_bantype(tmp2->banstr[1]);
if (!extban)
continue;
if (extban->is_banned(sptr, chptr, tmp2->banstr, type))
return NULL;
} else {
if ((match(tmp2->banstr, realhost) == 0) ||
(dovirt && (match(tmp2->banstr, virthost) == 0)) ||
(mine && (match(tmp2->banstr, nuip) == 0)) ||
(mine && (match(tmp2->banstr, cloakhost) == 0)) )
return NULL;
}
}
break; /* ban found and not on except */
}
return (tmp);
}