mirror of
https://github.com/matrix-construct/construct
synced 2024-11-15 22:41:12 +01:00
eeabf33a7c
This is cleaner. Note this was broken out of a much larger piece of work I did, so if there's any problems, I apologise!
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
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* Hostmask extban type: bans all users matching a given hostmask, used for stacked extbans
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* -- kaniini
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*/
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#include "stdinc.h"
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#include "modules.h"
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#include "client.h"
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#include "ircd.h"
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#include "ipv4_from_ipv6.h"
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static const char extb_desc[] = "Hostmask ($m) extban type";
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static int _modinit(void);
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static void _moddeinit(void);
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static int eb_hostmask(const char *data, struct Client *client_p, struct Channel *chptr, long mode_type);
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DECLARE_MODULE_AV2(extb_hostmask, _modinit, _moddeinit, NULL, NULL, NULL, NULL, NULL, extb_desc);
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static int
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_modinit(void)
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{
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extban_table['m'] = eb_hostmask;
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return 0;
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}
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static void
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_moddeinit(void)
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{
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extban_table['m'] = NULL;
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}
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static int
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eb_hostmask(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
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{
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char src_host[NICKLEN + USERLEN + HOSTLEN + 6];
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char src_iphost[NICKLEN + USERLEN + HOSTLEN + 6];
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char src_althost[NICKLEN + USERLEN + HOSTLEN + 6];
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char src_ip4host[NICKLEN + USERLEN + HOSTLEN + 6];
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struct sockaddr_in ip4;
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char *s = src_host, *s2 = src_iphost, *s3 = NULL, *s4 = NULL;
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sprintf(src_host, "%s!%s@%s", client_p->name, client_p->username, client_p->host);
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sprintf(src_iphost, "%s!%s@%s", client_p->name, client_p->username, client_p->sockhost);
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/* handle hostmangling if necessary */
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if (client_p->localClient->mangledhost != NULL)
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{
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if (!strcmp(client_p->host, client_p->localClient->mangledhost))
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sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->orighost);
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else if (!IsDynSpoof(client_p))
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sprintf(src_althost, "%s!%s@%s", client_p->name, client_p->username, client_p->localClient->mangledhost);
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s3 = src_althost;
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}
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#ifdef RB_IPV6
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/* handle Teredo if necessary */
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if (client_p->localClient->ip.ss_family == AF_INET6 && ipv4_from_ipv6((const struct sockaddr_in6 *) &client_p->localClient->ip, &ip4))
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{
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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);
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rb_inet_ntop_sock((struct sockaddr *)&ip4,
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s4, src_ip4host + sizeof src_ip4host - s4);
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s4 = src_ip4host;
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}
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#endif
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return match(banstr, s) || match(banstr, s2) || (s3 != NULL && match(banstr, s3)) || (s4 != NULL && match(banstr, s4)) ? EXTBAN_MATCH : EXTBAN_NOMATCH;
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}
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