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extenions: add a $m: extban (ref #74)

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William Pitcock 2015-12-10 02:25:22 -06:00
parent 4ef511ebb8
commit e2a9fa9cab
2 changed files with 70 additions and 0 deletions
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1
extensions/Makefile.in
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@ -46,6 +46,7 @@ SRCS = \
extb_account.c \ extb_account.c \
extb_canjoin.c \ extb_canjoin.c \
extb_channel.c \ extb_channel.c \
extb_hostmask.c \
extb_oper.c \ extb_oper.c \
extb_server.c \ extb_server.c \
extb_ssl.c \ extb_ssl.c \

69
extensions/extb_hostmask.c Normal file
View file

@ -0,0 +1,69 @@
/*
* 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 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_AV1(extb_hostmask, _modinit, _moddeinit, NULL, NULL, NULL, "$Revision: 1299 $");
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;
rb_sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host);
rb_sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost);
/* handle hostmangling if necessary */
if (client_p->localClient->mangledhost != NULL)
{
if (!strcmp(client_p->host, client_p->localClient->mangledhost))
rb_sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->orighost);
else if (!IsDynSpoof(client_p))
rb_sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->localClient->mangledhost);
s3 = src_althost;
}
#ifdef RB_IPV6
/* handle Teredo if necessary */
if (client_p->localClient->ip.ss_family == AF_INET6 && ipv4_from_ipv6((const struct sockaddr_in6 *) &client_p->localClient->ip, &ip4))
{
rb_sprintf(src_ip4host, "%s!%s@", client_p->name, client_p->username);
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;
}