mirror of https://github.com/agdsn/xerxes.git
136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
/**
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* xerxes - mysql proxying
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* ``Why do you persist in your loneliness?'' --Xerxes
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* (c) 2008
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* Jan Losinski <losinshi@wh2.tu-dresden.de>
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* Maximilian Marx <mmarx@wh2.tu-dresden.de>
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*/
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#include <iostream>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include "socket.hxx"
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int
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main(int argc, char* argv[])
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{
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using namespace std;
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using namespace xerxes;
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cout << "Hello, World!" << endl
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<< "ich kanns auch lassen, hier `Hello, World!' zu schreiben..."
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<< endl;
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Socket lstn(PF_INET, SOCK_STREAM, 0);
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addrinfo hints;
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addrinfo* res;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
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getaddrinfo("127.0.0.1", "13337", &hints, &res);
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bind(lstn, res->ai_addr, res->ai_addrlen);
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freeaddrinfo(res);
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int ret = listen(lstn, 3);
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if( ret != 0)
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{
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exit(1);
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}
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EPoll epoll;
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epoll.add(lstn);
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const int max_events = 23;
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boost::shared_array<epoll_event> events(new epoll_event[max_events]);
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std::map<int, boost::shared_ptr<Socket> > sockets;
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MysqlData buffer = makeData(1024);
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for(;;)
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{
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int num = epoll_wait(epoll.fd, events.get(), max_events, -1);
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for(int i = 0; i < num; ++i)
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{
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if((events[i].data.fd == -1)
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&& (events[i].events & EPOLLIN))
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{
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//close(accept(lstn, 0, 0));
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//cout << "hollo!" << endl;
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boost::shared_ptr<Socket> target(new Socket(PF_INET, SOCK_STREAM, 0));
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addrinfo hints;
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addrinfo* res;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
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getaddrinfo("127.0.0.1", "3306", &hints, &res);
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//getaddrinfo("127.0.0.1", "25", &hints, &res);
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connect(*target, res->ai_addr, res->ai_addrlen);
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freeaddrinfo(res);
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sockets[target->fd] = target;
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boost::shared_ptr<Socket> source(accept(lstn, 0, 0));
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sockets[source->fd] = source;
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epoll.add(*source, *target);
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}
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else
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{
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//lookup
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boost::shared_ptr<Socket> target(sockets[events[i].data.fd]);
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boost::shared_ptr<Socket> source(sockets[epoll.events[target->fd]->data.fd]);
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if((events[i].events & EPOLLIN )
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|| (events[i].events & EPOLLPRI))
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{
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// read -> write
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cout << "writer: "<< source->fd << endl;
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cout << "reader: "<< target->fd << endl;
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try
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{
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int len = recv(*source, buffer, 0);
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send(*target, buffer, len, 0);
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}
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catch (SocketErr e)
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{
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// hangup
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cout << "Socket Error, closing " << target->fd << " and " << source->fd << endl;
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epoll.del(target->fd);
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epoll.del(source->fd);
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sockets.erase(target->fd);
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sockets.erase(source->fd);
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continue;
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}
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}
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if((events[i].events & EPOLLERR)
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|| (events[i].events & EPOLLHUP))
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{
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// hangup
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cout << target->fd << " closed by " << source->fd << endl;
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epoll.del(target->fd);
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epoll.del(source->fd);
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sockets.erase(target->fd);
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sockets.erase(source->fd);
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continue;
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}
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}
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}
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}
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return 0;
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}
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