solanum/extensions/extb_hostmask.c

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/*
* Hostmask extban type: bans all users matching a given hostmask, used for stacked extbans
* -- kaniini
*/
#include "stdinc.h"
#include "modules.h"
#include "client.h"
#include "ircd.h"
#include "ipv4_from_ipv6.h"
static const char extb_desc[] = "Hostmask ($m) extban type";
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static int _modinit(void);
static void _moddeinit(void);
static int eb_hostmask(const char *data, struct Client *client_p, struct Channel *chptr, long mode_type);
DECLARE_MODULE_AV2(extb_hostmask, _modinit, _moddeinit, NULL, NULL, NULL, NULL, NULL, extb_desc);
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static int
_modinit(void)
{
extban_table['m'] = eb_hostmask;
return 0;
}
static void
_moddeinit(void)
{
extban_table['m'] = NULL;
}
static int
eb_hostmask(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
{
char src_host[NICKLEN + USERLEN + HOSTLEN + 6];
char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6];
char src_althost[NICKLEN + USERLEN + HOSTLEN + 6];
char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6];
struct sockaddr_in ip4;
char *s = src_host, *s2 = src_iphost, *s3 = NULL, *s4 = NULL;
sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host);
sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost);
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/* handle hostmangling if necessary */
if (client_p->localClient->mangledhost != NULL)
{
if (!strcmp(client_p->host, client_p->localClient->mangledhost))
sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->orighost);
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else if (!IsDynSpoof(client_p))
sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->localClient->mangledhost);
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s3 = src_althost;
}
#ifdef RB_IPV6
/* handle Teredo if necessary */
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if (GET_SS_FAMILY(&client_p->localClient->ip) == AF_INET6 && ipv4_from_ipv6((const struct sockaddr_in6 *) &client_p->localClient->ip, &ip4))
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{
sprintf(src_ip4host, "%s!%s@", client_p->name, client_p->username);
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s4 = src_ip4host + strlen(src_ip4host);
rb_inet_ntop_sock((struct sockaddr *)&ip4,
s4, src_ip4host + sizeof src_ip4host - s4);
s4 = src_ip4host;
}
#endif
return match(banstr, s) || match(banstr, s2) || (s3 != NULL && match(banstr, s3)) || (s4 != NULL && match(banstr, s4)) ? EXTBAN_MATCH : EXTBAN_NOMATCH;
}