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/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file tcp_content.cpp Basic functions to receive and send Content packets.
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*/
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#ifdef ENABLE_NETWORK
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#include "../../stdafx.h"
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#ifndef OPENTTD_MSU
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#include "../../textfile_gui.h"
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#include "../../newgrf_config.h"
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#include "../../base_media_base.h"
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#include "../../ai/ai.hpp"
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#include "../../game/game.hpp"
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#include "../../fios.h"
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#endif /* OPENTTD_MSU */
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#include "tcp_content.h"
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/** Clear everything in the struct */
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ContentInfo::ContentInfo()
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{
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memset(this, 0, sizeof(*this));
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}
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/** Free everything allocated */
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ContentInfo::~ContentInfo()
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{
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free(this->dependencies);
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free(this->tags);
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}
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/**
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* Copy data from other #ContentInfo and take ownership of allocated stuff.
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* @param other Source to copy from. #dependencies and #tags will be NULLed.
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*/
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void ContentInfo::TransferFrom(ContentInfo *other)
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{
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if (other != this) {
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free(this->dependencies);
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free(this->tags);
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memcpy(this, other, sizeof(ContentInfo));
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other->dependencies = NULL;
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other->tags = NULL;
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}
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}
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/**
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* Get the size of the data as send over the network.
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* @return the size.
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*/
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size_t ContentInfo::Size() const
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{
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size_t len = 0;
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for (uint i = 0; i < this->tag_count; i++) len += strlen(this->tags[i]) + 1;
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/* The size is never larger than the content info size plus the size of the
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* tags and dependencies */
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return sizeof(*this) +
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sizeof(this->dependency_count) +
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sizeof(*this->dependencies) * this->dependency_count;
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}
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/**
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* Is the state either selected or autoselected?
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* @return true iff that's the case
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*/
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bool ContentInfo::IsSelected() const
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{
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switch (this->state) {
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case ContentInfo::SELECTED:
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case ContentInfo::AUTOSELECTED:
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case ContentInfo::ALREADY_HERE:
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return true;
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default:
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return false;
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}
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}
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/**
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* Is the information from this content info valid?
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* @return true iff it's valid
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*/
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bool ContentInfo::IsValid() const
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{
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return this->state < ContentInfo::INVALID && this->type >= CONTENT_TYPE_BEGIN && this->type < CONTENT_TYPE_END;
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}
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#ifndef OPENTTD_MSU
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/**
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* Search a textfile file next to this file in the content list.
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* @param type The type of the textfile to search for.
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* @return The filename for the textfile, \c NULL otherwise.
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*/
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const char *ContentInfo::GetTextfile(TextfileType type) const
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{
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if (this->state == INVALID) return NULL;
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const char *tmp;
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switch (this->type) {
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default: NOT_REACHED();
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case CONTENT_TYPE_AI:
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tmp = AI::GetScannerInfo()->FindMainScript(this, true);
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break;
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case CONTENT_TYPE_AI_LIBRARY:
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tmp = AI::GetScannerLibrary()->FindMainScript(this, true);
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break;
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case CONTENT_TYPE_GAME:
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tmp = Game::GetScannerInfo()->FindMainScript(this, true);
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break;
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case CONTENT_TYPE_GAME_LIBRARY:
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tmp = Game::GetScannerLibrary()->FindMainScript(this, true);
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break;
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case CONTENT_TYPE_NEWGRF: {
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const GRFConfig *gc = FindGRFConfig(BSWAP32(this->unique_id), FGCM_EXACT, this->md5sum);
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tmp = gc != NULL ? gc->filename : NULL;
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break;
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}
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case CONTENT_TYPE_BASE_GRAPHICS:
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tmp = TryGetBaseSetFile(this, true, BaseGraphics::GetAvailableSets());
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break;
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case CONTENT_TYPE_BASE_SOUNDS:
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tmp = TryGetBaseSetFile(this, true, BaseSounds::GetAvailableSets());
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break;
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case CONTENT_TYPE_BASE_MUSIC:
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tmp = TryGetBaseSetFile(this, true, BaseMusic::GetAvailableSets());
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break;
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case CONTENT_TYPE_SCENARIO:
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case CONTENT_TYPE_HEIGHTMAP:
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extern const char *FindScenario(const ContentInfo *ci, bool md5sum);
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tmp = FindScenario(this, true);
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break;
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}
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if (tmp == NULL) return NULL;
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return ::GetTextfile(type, GetContentInfoSubDir(this->type), tmp);
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}
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#endif /* OPENTTD_MSU */
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void NetworkContentSocketHandler::Close()
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{
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CloseConnection();
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if (this->sock == INVALID_SOCKET) return;
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closesocket(this->sock);
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this->sock = INVALID_SOCKET;
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}
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/**
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* Defines a simple (switch) case for each network packet
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* @param type the packet type to create the case for
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*/
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#define CONTENT_COMMAND(type) case type: return this->NetworkPacketReceive_ ## type ## _command(p); break;
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/**
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* Handle the given packet, i.e. pass it to the right
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* parser receive command.
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* @param p the packet to handle
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* @return true if we should immediately handle further packets, false otherwise
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*/
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bool NetworkContentSocketHandler::HandlePacket(Packet *p)
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{
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PacketContentType type = (PacketContentType)p->Recv_uint8();
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switch (this->HasClientQuit() ? PACKET_CONTENT_END : type) {
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case PACKET_CONTENT_CLIENT_INFO_LIST: return this->Receive_CLIENT_INFO_LIST(p);
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case PACKET_CONTENT_CLIENT_INFO_ID: return this->Receive_CLIENT_INFO_ID(p);
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case PACKET_CONTENT_CLIENT_INFO_EXTID: return this->Receive_CLIENT_INFO_EXTID(p);
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case PACKET_CONTENT_CLIENT_INFO_EXTID_MD5: return this->Receive_CLIENT_INFO_EXTID_MD5(p);
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case PACKET_CONTENT_SERVER_INFO: return this->Receive_SERVER_INFO(p);
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case PACKET_CONTENT_CLIENT_CONTENT: return this->Receive_CLIENT_CONTENT(p);
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case PACKET_CONTENT_SERVER_CONTENT: return this->Receive_SERVER_CONTENT(p);
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default:
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if (this->HasClientQuit()) {
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DEBUG(net, 0, "[tcp/content] received invalid packet type %d from %s", type, this->client_addr.GetAddressAsString());
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} else {
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DEBUG(net, 0, "[tcp/content] received illegal packet from %s", this->client_addr.GetAddressAsString());
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}
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return false;
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}
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}
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/**
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* Receive a packet at TCP level
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*/
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void NetworkContentSocketHandler::ReceivePackets()
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{
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Packet *p;
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while ((p = this->ReceivePacket()) != NULL) {
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bool cont = this->HandlePacket(p);
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delete p;
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if (!cont) return;
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}
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}
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/**
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* Helper for logging receiving invalid packets.
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* @param type The received packet type.
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* @return Always false, as it's an error.
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*/
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bool NetworkContentSocketHandler::ReceiveInvalidPacket(PacketContentType type)
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{
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DEBUG(net, 0, "[tcp/content] received illegal packet type %d from %s", type, this->client_addr.GetAddressAsString());
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return false;
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}
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bool NetworkContentSocketHandler::Receive_CLIENT_INFO_LIST(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_CLIENT_INFO_LIST); }
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bool NetworkContentSocketHandler::Receive_CLIENT_INFO_ID(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_CLIENT_INFO_ID); }
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bool NetworkContentSocketHandler::Receive_CLIENT_INFO_EXTID(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_CLIENT_INFO_EXTID); }
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bool NetworkContentSocketHandler::Receive_CLIENT_INFO_EXTID_MD5(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_CLIENT_INFO_EXTID_MD5); }
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bool NetworkContentSocketHandler::Receive_SERVER_INFO(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_SERVER_INFO); }
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bool NetworkContentSocketHandler::Receive_CLIENT_CONTENT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_CLIENT_CONTENT); }
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bool NetworkContentSocketHandler::Receive_SERVER_CONTENT(Packet *p) { return this->ReceiveInvalidPacket(PACKET_CONTENT_SERVER_CONTENT); }
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#ifndef OPENTTD_MSU
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/**
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* Helper to get the subdirectory a #ContentInfo is located in.
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* @param type The type of content.
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* @return The subdirectory the content is located in.
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*/
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Subdirectory GetContentInfoSubDir(ContentType type)
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{
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switch (type) {
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default: return NO_DIRECTORY;
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case CONTENT_TYPE_AI: return AI_DIR;
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case CONTENT_TYPE_AI_LIBRARY: return AI_LIBRARY_DIR;
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case CONTENT_TYPE_GAME: return GAME_DIR;
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case CONTENT_TYPE_GAME_LIBRARY: return GAME_LIBRARY_DIR;
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case CONTENT_TYPE_NEWGRF: return NEWGRF_DIR;
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case CONTENT_TYPE_BASE_GRAPHICS:
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case CONTENT_TYPE_BASE_SOUNDS:
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case CONTENT_TYPE_BASE_MUSIC:
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return BASESET_DIR;
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case CONTENT_TYPE_SCENARIO:
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case CONTENT_TYPE_HEIGHTMAP:
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return SCENARIO_DIR;
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}
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}
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#endif /* OPENTTD_MSU */
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#endif /* ENABLE_NETWORK */
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