solanum-vs-hackint-and-char.../extensions/cap_realhost.c

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/*
* Copyright (C) 2020 Ed Kellett
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <stdinc.h>
#include <modules.h>
#include <capability.h>
#include <s_serv.h>
#include <s_newconf.h>
#include <client.h>
#include <msgbuf.h>
static char cap_realhost_desc[] = "Provides the solanum.chat/realhost oper-only capability";
static bool cap_oper_realhost_visible(struct Client *);
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static void cap_realhost_outbound_msgbuf(void *);
static void cap_realhost_umode_changed(void *);
static void cap_realhost_cap_change(void *);
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static unsigned CLICAP_REALHOST;
static unsigned CLICAP_OPER_REALHOST;
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static struct ClientCapability capdata_oper_realhost = {
.visible = cap_oper_realhost_visible,
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};
mapi_cap_list_av2 cap_realhost_caps[] = {
{ MAPI_CAP_CLIENT, "solanum.chat/realhost", NULL, &CLICAP_REALHOST },
{ MAPI_CAP_CLIENT, "?oper_realhost", &capdata_oper_realhost, &CLICAP_OPER_REALHOST },
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{ 0, NULL, NULL, NULL },
};
mapi_hfn_list_av1 cap_realhost_hfnlist[] = {
{ "outbound_msgbuf", cap_realhost_outbound_msgbuf, HOOK_NORMAL },
{ "umode_changed", cap_realhost_umode_changed, HOOK_MONITOR },
{ "cap_change", cap_realhost_cap_change, HOOK_MONITOR },
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{ NULL, NULL, 0 },
};
static bool
cap_oper_realhost_visible(struct Client *client)
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{
return false;
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}
static void
cap_realhost_outbound_msgbuf(void *data_)
{
hook_data *data = data_;
struct MsgBuf *msgbuf = data->arg1;
if (data->client == NULL || !IsPerson(data->client))
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return;
if (!IsIPSpoof(data->client) && !EmptyString(data->client->sockhost) && strcmp(data->client->sockhost, "0"))
{
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msgbuf_append_tag(msgbuf, "solanum.chat/ip", data->client->sockhost,
IsDynSpoof(data->client) ? CLICAP_OPER_REALHOST : CLICAP_REALHOST);
}
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if (!EmptyString(data->client->orighost))
msgbuf_append_tag(msgbuf, "solanum.chat/realhost", data->client->orighost, CLICAP_OPER_REALHOST);
}
static inline void
update_clicap_oper_realhost(struct Client *client)
{
client->localClient->caps &= ~CLICAP_OPER_REALHOST;
if (client->localClient->caps & CLICAP_REALHOST && HasPrivilege(client, "auspex:hostname"))
{
client->localClient->caps |= CLICAP_OPER_REALHOST;
}
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}
static void
cap_realhost_umode_changed(void *data_)
{
hook_data_umode_changed *data = data_;
if (!MyClient(data->client))
return;
update_clicap_oper_realhost(data->client);
}
static void
cap_realhost_cap_change(void *data_)
{
hook_data_cap_change *data = data_;
update_clicap_oper_realhost(data->client);
}
static int
modinit(void)
{
rb_dlink_node *ptr;
RB_DLINK_FOREACH(ptr, lclient_list.head)
{
struct Client *client = ptr->data;
update_clicap_oper_realhost(client);
}
return 0;
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}
DECLARE_MODULE_AV2(cap_realhost, modinit, NULL, NULL, NULL, cap_realhost_hfnlist, cap_realhost_caps, NULL, cap_realhost_desc);