geoip_tag

/*
 *   IRC - Internet Relay Chat, src/modules/geoip-tag.c
 *   (C) 2020 Syzop & The UnrealIRCd Team
 *
 *   See file AUTHORS in IRC package for additional names of
 *   the programmers.
 *
 *   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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "unrealircd.h"

ModuleHeader MOD_HEADER
  = {
    "geoip-tag",
    "5.0",
    "geoip message tag",
    "UnrealIRCd Team",
    "unrealircd-6",
    };

/* Variables */
long CAP_ACCOUNT_TAG = 0L;
// No idea if this needs somewhere
// (same having account-tag + userip-tag + userhost-tag modules but only in account-tag is being used)

int geoip_mtag_is_ok(Client *client, const char *name, const char *value);
int geoip_mtag_should_send_to_client(Client *target);
void mtag_add_geoip(Client *client, MessageTag *recv_mtags, MessageTag **mtag_list, const char *signature);

MOD_INIT()
{
    MessageTagHandlerInfo mtag;

    MARK_AS_OFFICIAL_MODULE(modinfo);

    memset(&mtag, 0, sizeof(mtag));
    mtag.name = "unrealircd.org/geoip";
    mtag.is_ok = geoip_mtag_is_ok;
    mtag.should_send_to_client = geoip_mtag_should_send_to_client;
    mtag.flags = MTAG_HANDLER_FLAGS_NO_CAP_NEEDED;
    MessageTagHandlerAdd(modinfo->handle, &mtag);

    HookAddVoid(modinfo->handle, HOOKTYPE_NEW_MESSAGE, 0, mtag_add_geoip);

    return MOD_SUCCESS;
}

MOD_LOAD()
{
    return MOD_SUCCESS;
}

MOD_UNLOAD()
{
    return MOD_SUCCESS;
}

/** This function verifies if the client sending
 * 'geoip-tag' is permitted to do so and uses a permitted
 * syntax.
 * We simply allow geoip-tag ONLY from servers and with any syntax.
 */
int geoip_mtag_is_ok(Client *client, const char *name, const char *value)
{
    if (IsServer(client))
        return 1;

    return 0;
}

void mtag_add_geoip(Client *client, MessageTag *recv_mtags, MessageTag **mtag_list, const char *signature)
{
    MessageTag *m;

    GeoIPResult *geoip = geoip_lookup(client->ip);
    // geoip_lookup(client->ip); OR geoip_client(client); ?????????

    if (IsUser(client) && geoip)
    {
        MessageTag *m = find_mtag(recv_mtags, "unrealircd.org/geoip");
        if (m)
        {
            m = duplicate_mtag(m);
        } else {
            m = safe_alloc(sizeof(MessageTag));
            safe_strdup(m->name, "unrealircd.org/geoip");
            safe_strdup(m->value, geoip->country_code);
        }
        AddListItem(m, *mtag_list);
    }
}

/** Outgoing filter for this message tag */
int geoip_mtag_should_send_to_client(Client *target)
{
    if (IsServer(target) || IsOper(target))
        return 1;
    return 0;
}