mirror of https://github.com/OpenTTD/OpenTTD.git
137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
/* $Id$ */
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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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#include "../../debug.h"
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#include "tcp_content.h"
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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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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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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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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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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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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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NetworkRecvStatus NetworkContentSocketHandler::CloseConnection()
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{
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this->has_quit = true;
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return NETWORK_RECV_STATUS_OKAY;
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}
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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 an incoming packets by sending it to the correct function.
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* @param p the received packet
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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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CONTENT_COMMAND(PACKET_CONTENT_CLIENT_INFO_LIST);
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CONTENT_COMMAND(PACKET_CONTENT_CLIENT_INFO_ID);
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CONTENT_COMMAND(PACKET_CONTENT_CLIENT_INFO_EXTID);
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CONTENT_COMMAND(PACKET_CONTENT_CLIENT_INFO_EXTID_MD5);
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CONTENT_COMMAND(PACKET_CONTENT_SERVER_INFO);
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CONTENT_COMMAND(PACKET_CONTENT_CLIENT_CONTENT);
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CONTENT_COMMAND(PACKET_CONTENT_SERVER_CONTENT);
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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:%d", type, inet_ntoa(this->client_addr.sin_addr), ntohs(this->client_addr.sin_port));
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} else {
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DEBUG(net, 0, "[tcp/content] received illegal packet from %s:%d", inet_ntoa(this->client_addr.sin_addr), ntohs(this->client_addr.sin_port));
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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 UDP level
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*/
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void NetworkContentSocketHandler::Recv_Packets()
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{
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Packet *p;
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NetworkRecvStatus res;
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while ((p = this->Recv_Packet(&res)) != NULL) {
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bool cont = 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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* Create stub implementations for all receive commands that only
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* show a warning that the given command is not available for the
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* socket where the packet came from.
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* @param type the packet type to create the stub for
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*/
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#define DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(type) \
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bool NetworkContentSocketHandler::NetworkPacketReceive_## type ##_command(Packet *p) { \
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DEBUG(net, 0, "[tcp/content] received illegal packet type %d from %s:%d", \
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type, inet_ntoa(this->client_addr.sin_addr), ntohs(this->client_addr.sin_port)); \
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return false; \
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}
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_CLIENT_INFO_LIST);
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_CLIENT_INFO_ID);
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_CLIENT_INFO_EXTID);
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_CLIENT_INFO_EXTID_MD5);
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_SERVER_INFO);
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_CLIENT_CONTENT);
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DEFINE_UNAVAILABLE_CONTENT_RECEIVE_COMMAND(PACKET_CONTENT_SERVER_CONTENT);
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#endif /* ENABLE_NETWORK */
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