119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/*
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*
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* Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
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* All rights reserved.
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*
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* This file is part of libprotoident.
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*
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* This code has been developed by the University of Waikato WAND
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* research group. For further information please see http://www.wand.net.nz/
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*
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* libprotoident is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* libprotoident is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#include <string.h>
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#include "libprotoident.h"
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#include "proto_manager.h"
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#include "proto_common.h"
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/* Protocol is not documented and goes through all sorts of revisions
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* (mainly to stop hax0rs, no doubt) - so this is mostly based on
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* observations of traffic to Jagex servers and messing around with the
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* game myself
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*/
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static inline bool match_runescape_req(uint32_t payload, uint32_t len) {
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if (len == 1 || len == 105) {
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if (MATCH(payload, 0x00, 0x00, 0x00, 0x00))
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return true;
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}
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if (len == 9 && MATCH(payload, 0x00, ANY, ANY, ANY))
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return true;
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return false;
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}
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static inline bool match_runescape_resp(uint32_t payload, uint32_t len) {
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/* Don't allow empty responses, as the request rule is rather
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* non-specific */
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/* First byte appears to be a packet type
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* Second bytes is the packet length - 2
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*
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* It appears many types have a fixed size anyway, so no need to
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* get fancy :)
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*/
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if (MATCH(payload, 0x0f, 0x29, 0x00, 0x00)) {
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if (len == 43)
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return true;
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}
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if (MATCH(payload, 0x0f, 0x2a, 0x00, 0x00)) {
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if (len == 44)
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return true;
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}
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if (MATCH(payload, 0x0e, 0x00, 0x00, 0x00)) {
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if (len == 1)
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return true;
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}
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if (MATCH(payload, 0x0f, 0x00, 0x00, 0x00)) {
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if (len == 1)
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return true;
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if (len == 5)
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return true;
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}
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return false;
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}
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static inline bool match_runescape(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (match_runescape_req(data->payload[0], data->payload_len[0])) {
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if (match_runescape_resp(data->payload[1],
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data->payload_len[1])) {
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return true;
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}
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}
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if (match_runescape_req(data->payload[1], data->payload_len[1])) {
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if (match_runescape_resp(data->payload[0],
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data->payload_len[0])) {
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return true;
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}
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}
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return false;
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}
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static lpi_module_t lpi_runescape = {
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LPI_PROTO_RUNESCAPE,
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LPI_CATEGORY_GAMING,
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"Runescape",
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9,
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match_runescape
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};
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void register_runescape(LPIModuleMap *mod_map) {
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register_protocol(&lpi_runescape, mod_map);
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}
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