RetroShare/libretroshare/src/pqi/pqipersongrp.cc

701 lines
16 KiB
C++

/*
* libretroshare/src/pqi: pqipersongrp.cc
*
* 3P/PQI network interface for RetroShare.
*
* Copyright 2004-2008 by Robert Fernie.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License Version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "retroshare@lunamutt.com".
*
*/
#include "pqi/pqipersongrp.h"
#include "pqi/p3linkmgr.h"
#include "util/rsdebug.h"
#include <sstream>
#include <stdio.h>
const int pqipersongrpzone = 354;
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
#include "retroshare/rsinit.h"
static std::list<std::string> waitingIds;
#define MAX_CONNECT_COUNT 5
///////////////////////////////////////////////////////////
#endif
/****
*#define PGRP_DEBUG 1
****/
//#define PGRP_DEBUG 1
/* MUTEX NOTES:
* Functions like GetRsRawItem() lock itself (pqihandler) and
* likewise ServiceServer and ConfigMgr mutex themselves.
* This means the only things we need to worry about are:
* pqilistener and when accessing pqihandlers data.
*/
// handle the tunnel services.
int pqipersongrp::tickServiceRecv()
{
RsRawItem *pqi = NULL;
int i = 0;
{
std::ostringstream out;
out << "pqipersongrp::tickTunnelServer()";
pqioutput(PQL_DEBUG_ALL, pqipersongrpzone, out.str());
}
//p3ServiceServer::tick();
while(NULL != (pqi = GetRsRawItem()))
{
++i;
pqioutput(PQL_DEBUG_BASIC, pqipersongrpzone,
"pqipersongrp::tickTunnelServer() Incoming TunnelItem");
incoming(pqi);
}
if (0 < i)
{
return 1;
}
return 0;
}
// handle the tunnel services.
int pqipersongrp::tickServiceSend()
{
RsRawItem *pqi = NULL;
int i = 0;
{
std::ostringstream out;
out << "pqipersongrp::tickServiceSend()";
pqioutput(PQL_DEBUG_ALL, pqipersongrpzone, out.str());
}
p3ServiceServer::tick();
while(NULL != (pqi = outgoing())) /* outgoing has own locking */
{
++i;
pqioutput(PQL_DEBUG_BASIC, pqipersongrpzone,
"pqipersongrp::tickTunnelServer() OutGoing RsItem");
SendRsRawItem(pqi); /* Locked by pqihandler */
}
if (0 < i)
{
return 1;
}
return 0;
}
// init
pqipersongrp::pqipersongrp(SecurityPolicy *glob, unsigned long flags)
:pqihandler(glob), pqil(NULL), config(NULL), initFlags(flags)
{
}
int pqipersongrp::tick()
{
/* could limit the ticking of listener / tunnels to 1/sec...
* but not to important.
*/
{ RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
if (pqil)
{
pqil -> tick();
}
} /* UNLOCKED */
int i = 0;
if (tickServiceSend())
{
i = 1;
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::tick() moreToTick from tickServiceSend()" << std::endl;
#endif
}
if (pqihandler::tick()) /* does actual Send/Recv */
{
i = 1;
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::tick() moreToTick from pqihandler::tick()" << std::endl;
#endif
}
if (tickServiceRecv())
{
i = 1;
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::tick() moreToTick from tickServiceRecv()" << std::endl;
#endif
}
return i;
}
int pqipersongrp::status()
{
{ RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
if (pqil)
{
pqil -> status();
}
} /* UNLOCKED */
return pqihandler::status();
}
/* Initialise pqilistener */
int pqipersongrp::init_listener()
{
/* extract our information from the p3ConnectMgr */
if (initFlags & PQIPERSON_NO_LISTENER)
{
pqil = NULL;
}
else
{
/* extract details from
*/
struct sockaddr_in laddr = mLinkMgr->getLocalAddress();
RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
pqil = createListener(laddr);
}
return 1;
}
bool pqipersongrp::resetListener(struct sockaddr_in &local)
{
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::resetListener()" << std::endl;
#endif
// stop it,
// change the address.
// restart.
RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
if (pqil != NULL)
{
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::resetListener() haveListener" << std::endl;
#endif
pqil -> resetlisten();
pqil -> setListenAddr(local);
pqil -> setuplisten();
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::resetListener() done!" << std::endl;
#endif
}
return 1;
}
/* NOT bothering to protect Config with a mutex.... it is not going to change
* and has its own internal mutexs.
*/
int pqipersongrp::setConfig(p3GeneralConfig *cfg)
{
config = cfg;
return 1;
}
static const std::string pqih_ftr("PQIH_FTR");
int pqipersongrp::save_config()
{
char line[512];
sprintf(line, "%f %f", getMaxRate(true), getMaxRate(false));
if (config)
{
config -> setSetting(pqih_ftr, std::string(line));
}
return 1;
}
int pqipersongrp::load_config()
{
std::string line;
if (config)
{
line = config -> getSetting(pqih_ftr);
}
float mri, mro;
if (2 == sscanf(line.c_str(), "%f %f", &mri, &mro))
{
setMaxRate(true, mri);
setMaxRate(false, mro);
}
else
{
pqioutput(PQL_DEBUG_BASIC, pqipersongrpzone,
"pqipersongrp::load_config() Loading Default Rates!");
setMaxRate(true, 500.0);
setMaxRate(false, 500.0);
}
return 1;
}
void pqipersongrp::statusChange(const std::list<pqipeer> &plist)
{
/* iterate through, only worry about the friends */
std::list<pqipeer>::const_iterator it;
for(it = plist.begin(); it != plist.end(); it++)
{
if (it->state & RS_PEER_S_FRIEND)
{
/* now handle add/remove */
if ((it->actions & RS_PEER_NEW)
|| (it->actions & RS_PEER_MOVED))
{
addPeer(it->id);
}
if (it->actions & RS_PEER_CONNECT_REQ)
{
connectPeer(it->id);
}
}
else /* Not Friend */
{
if (it->actions & RS_PEER_MOVED)
{
removePeer(it->id);
}
}
}
}
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
void pqipersongrp::statusChanged()
{
#warning "Windows connection limited hacked together - please fix"
if (RsInit::isWindowsXP() == false) {
/* the problem only exist in Windows XP */
waitingIds.clear();
return;
}
/* there is no need for a mutex for waitingIds */
if (waitingIds.empty()) {
/* nothing to do */
return;
}
/* check for active connections and start waiting id's */
long connect_count = 0;
{
RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
/* get address from p3connmgr */
if (!mLinkMgr) {
return;
}
/* check for active connections and start waiting id's */
std::list<std::string> peers;
mLinkMgr->getFriendList(peers);
/* count connection attempts */
std::list<std::string>::iterator peer;
for (peer = peers.begin(); peer != peers.end(); peer++) {
peerConnectState state;
if (mLinkMgr->getFriendNetStatus(*peer, state) == false) {
continue;
}
if (state.inConnAttempt) {
connect_count++;
if (connect_count >= MAX_CONNECT_COUNT) {
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::connectPeer() Too many connections due to windows limitations. There are " << waitingIds.size() << " waiting connections." << std::endl;
#endif
return;
}
}
}
} /* UNLOCKED */
#ifdef PGRP_DEBUG
std::cerr << "pqipersongrp::connectPeer() There are " << connect_count << " connection attempts and " << waitingIds.size() << " waiting connections. Can start " << (MAX_CONNECT_COUNT - connect_count) << " connection attempts." << std::endl;
#endif
/* start some waiting id's */
for (int i = connect_count; i < MAX_CONNECT_COUNT; i++) {
if (waitingIds.empty()) {
break;
}
std::string waitingId = waitingIds.front();
waitingIds.pop_front();
connectPeer(waitingId, true);
}
}
///////////////////////////////////////////////////////////
#endif
int pqipersongrp::addPeer(std::string id)
{
{
std::ostringstream out;
out << "pqipersongrp::addPeer() PeerId: " << id;
pqioutput(PQL_DEBUG_BASIC, pqipersongrpzone, out.str());
}
std::cerr << "pqipersongrp::addPeer() id: " << id;
std::cerr << std::endl;
#ifdef PGRP_DEBUG
#endif
SearchModule *sm = NULL;
{ RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
std::map<std::string, SearchModule *>::iterator it;
it = mods.find(id);
if (it != mods.end())
{
pqioutput(PQL_DEBUG_BASIC, pqipersongrpzone,
"pqipersongrp::addPeer() Peer already in Use!");
std::cerr << " pqipersongrp::addPeer() ERROR Peer already in use! id: " << id;
std::cerr << std::endl;
return -1;
}
pqiperson *pqip = createPerson(id, pqil);
// attach to pqihandler
sm = new SearchModule();
sm -> peerid = id;
sm -> pqi = pqip;
sm -> sp = secpolicy_create();
// reset it to start it working.
pqip -> reset();
pqip -> listen();
} /* UNLOCKED */
return AddSearchModule(sm);
}
int pqipersongrp::removePeer(std::string id)
{
std::map<std::string, SearchModule *>::iterator it;
#ifdef PGRP_DEBUG
#endif
std::cerr << "pqipersongrp::removePeer() id: " << id;
std::cerr << std::endl;
RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
it = mods.find(id);
if (it != mods.end())
{
SearchModule *mod = it->second;
// Don't duplicate remove!!!
//RemoveSearchModule(mod);
secpolicy_delete(mod -> sp);
pqiperson *p = (pqiperson *) mod -> pqi;
p -> stoplistening();
p -> reset();
delete p;
mods.erase(it);
}
else
{
std::cerr << " pqipersongrp::removePeer() ERROR doesn't exist! id: " << id;
std::cerr << std::endl;
}
return 1;
}
int pqipersongrp::tagHeartbeatRecvd(std::string id)
{
std::map<std::string, SearchModule *>::iterator it;
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::tagHeartbeatRecvd() id: " << id;
std::cerr << std::endl;
#endif
RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
it = mods.find(id);
if (it != mods.end())
{
SearchModule *mod = it->second;
pqiperson *p = (pqiperson *) mod -> pqi;
p->receiveHeartbeat();
return 1;
}
return 0;
}
int pqipersongrp::connectPeer(std::string id
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
, bool bConnect /*= false*/
///////////////////////////////////////////////////////////
#endif
)
{
/* get status from p3connectMgr */
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() id: " << id << " does nothing yet! ";
std::cerr << std::endl;
#endif
{
RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
if (id == mLinkMgr->getOwnId())
{
std::cerr << "pqipersongrp::connectPeer() ERROR Failed, connecting to own id." << std::endl;
#ifdef PGRP_DEBUG
#endif
return 0;
}
std::map<std::string, SearchModule *>::iterator it;
it = mods.find(id);
if (it == mods.end())
{
return 0;
}
/* get the connect attempt details from the p3connmgr... */
SearchModule *mod = it->second;
pqiperson *p = (pqiperson *) mod -> pqi;
/* get address from p3connmgr */
if (!mLinkMgr)
return 0;
#ifdef WINDOWS_SYS
///////////////////////////////////////////////////////////
// hack for too many connections
if (RsInit::isWindowsXP()) {
/* the problem only exist in Windows XP */
if (bConnect == false) {
/* check for id is waiting */
if (std::find(waitingIds.begin(), waitingIds.end(), id) != waitingIds.end()) {
/* id is waiting for a connection */
return 0;
}
/* add id to waiting */
waitingIds.push_back(id);
/* wait for call to connectPeer with empty id */
return 0;
}
/* remove id from waiting */
waitingIds.remove(id);
}
///////////////////////////////////////////////////////////
#endif
struct sockaddr_in addr;
uint32_t delay;
uint32_t period;
uint32_t timeout;
uint32_t type;
uint32_t flags = 0 ;
struct sockaddr_in proxyaddr;
struct sockaddr_in srcaddr;
uint32_t bandwidth;
if (!mLinkMgr->connectAttempt(id, addr, proxyaddr, srcaddr, delay, period, type, flags, bandwidth))
{
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() No Net Address";
std::cerr << std::endl;
#endif
return 0;
}
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() connectAttempt data id: " << id;
std::cerr << " addr: " << rs_inet_ntoa(addr.sin_addr) << ":" << ntohs(addr.sin_port);
std::cerr << " delay: " << delay;
std::cerr << " period: " << period;
std::cerr << " type: " << type;
std::cerr << " flags: " << flags;
std::cerr << std::endl;
#endif
uint32_t ptype;
if (type & RS_NET_CONN_TCP_ALL)
{
ptype = PQI_CONNECT_TCP;
timeout = RS_TCP_STD_TIMEOUT_PERIOD;
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() connecting with TCP: Timeout :" << timeout;
std::cerr << std::endl;
#endif
}
else if (type & RS_NET_CONN_UDP_ALL)
{
ptype = PQI_CONNECT_UDP;
timeout = period + RS_UDP_STD_TIMEOUT_PERIOD; // Split of UNCERTAINTY + TIME FOR TTL to RISE to Connection.
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() connecting with UDP: Timeout :" << timeout;
std::cerr << std::endl;
#endif
}
else if (type & RS_NET_CONN_TUNNEL)
{
ptype = PQI_CONNECT_TUNNEL;
timeout = period * 2;
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() connecting with Tunnel: Timeout :" << timeout;
std::cerr << std::endl;
#endif
}
else
{
#ifdef PGRP_DEBUG
std::cerr << " pqipersongrp::connectPeer() Ignoring Unknown Type:" << type;
std::cerr << std::endl;
#endif
return 0;
}
p->connect(ptype, addr, proxyaddr, srcaddr, delay, period, timeout, flags, bandwidth);
} /* UNLOCKED */
/* */
return 1;
}
bool pqipersongrp::notifyConnect(std::string id, uint32_t ptype, bool success, struct sockaddr_in raddr)
{
uint32_t type = 0;
if (ptype == PQI_CONNECT_TCP)
{
type = RS_NET_CONN_TCP_ALL;
}
else if (ptype == PQI_CONNECT_UDP)
{
type = RS_NET_CONN_UDP_ALL;
}
else if (ptype == PQI_CONNECT_TUNNEL)
{
type = RS_NET_CONN_TUNNEL;
}
if (mLinkMgr)
mLinkMgr->connectResult(id, success, type, raddr);
return (NULL != mLinkMgr);
}
/******************************** DUMMY Specific features ***************************/
#include "pqi/pqibin.h"
pqilistener * pqipersongrpDummy::createListener(struct sockaddr_in laddr)
{
pqilistener *listener = new pqilistener();
return listener;
}
pqiperson * pqipersongrpDummy::createPerson(std::string id, pqilistener *listener)
{
{
std::ostringstream out;
out << "pqipersongrpDummy::createPerson() PeerId: " << id;
pqioutput(PQL_DEBUG_BASIC, pqipersongrpzone, out.str());
}
pqiperson *pqip = new pqiperson(id, this);
// TCP
NetBinDummy *d1 = new NetBinDummy(pqip, id, PQI_CONNECT_TCP);
RsSerialiser *rss = new RsSerialiser();
rss->addSerialType(new RsFileItemSerialiser());
rss->addSerialType(new RsCacheItemSerialiser());
rss->addSerialType(new RsServiceSerialiser());
pqiconnect *pqic = new pqiconnect(rss, d1);
pqip -> addChildInterface(PQI_CONNECT_TCP, pqic);
// UDP.
NetBinDummy *d2 = new NetBinDummy(pqip, id, PQI_CONNECT_UDP);
RsSerialiser *rss2 = new RsSerialiser();
rss2->addSerialType(new RsFileItemSerialiser());
rss2->addSerialType(new RsCacheItemSerialiser());
rss2->addSerialType(new RsServiceSerialiser());
pqiconnect *pqic2 = new pqiconnect(rss2, d2);
pqip -> addChildInterface(PQI_CONNECT_UDP, pqic2);
return pqip;
}
/******************************** DUMMY Specific features ***************************/