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add i2psam3

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This commit is contained in:
sehraf 2020-10-25 12:50:55 +01:00
parent 42bc295d1a
commit 10189ba4d0
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GPG Key ID: DF09F6EAE356B2C6
21 changed files with 1543 additions and 85 deletions
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25
libretroshare/src/libretroshare.pro
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@ -1014,6 +1014,31 @@ rs_broadcast_discovery {
}
}
rs_sam3 {
SOURCES += \
services/autoproxy/p3i2psam3.cpp \
pqi/pqissli2psam3.cpp \
HEADERS += \
services/autoproxy/p3i2psam3.h \
pqi/pqissli2psam3.h \
}
rs_sam3_libsam3 {
DUMMYQMAKECOMPILERINPUT = FORCE
libsam3.name = Generating libsam3.
libsam3.input = DUMMYQMAKECOMPILERINPUT
libsam3.output = $$clean_path($${LIBSAM3_BUILD_PATH}/libsam3.a)
libsam3.CONFIG += target_predeps combine
libsam3.variable_out = PRE_TARGETDEPS
libsam3.commands = \
cd $${RS_SRC_PATH} && \
cp -r $${LIBSAM3_SRC_PATH}/* $${LIBSAM3_BUILD_PATH} && \
cd $${LIBSAM3_BUILD_PATH} && \
$(MAKE) build
QMAKE_EXTRA_COMPILERS += libsam3
}
###########################################################################################################
# OLD CONFIG OPTIONS.
# Not used much - but might be useful one day.

1
libretroshare/src/pqi/pqissl.cc
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@ -1742,6 +1742,7 @@ bool pqissl::moretoread(uint32_t usec)
{
rslog(RSL_ALERT, pqisslzone,
"pqissl::moretoread() Select ERROR!");
RS_WARN(errno);
return 0;
}

304
libretroshare/src/pqi/pqissli2psam3.cpp Normal file
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@ -0,0 +1,304 @@
#include "pqissli2psam3.h"
#ifdef RS_USE_I2P_SAM3_I2PSAM
#include "util/i2psam.h"
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
#include <libsam3.h>
#endif
RS_SET_CONTEXT_DEBUG_LEVEL(2)
static constexpr int pqiDone = 1;
static constexpr int pqiWait = 0;
static constexpr int pqiError = -1;
pqissli2psam3::pqissli2psam3(pqissllistener *l, PQInterface *parent, p3LinkMgr *lm)
: pqissl(l, parent, lm), mState(pqisslSam3State::NONE), mI2pAddrB32(), mI2pAddrLong()
{
RS_DBG4();
mConn = nullptr;
}
bool pqissli2psam3::connect_parameter(uint32_t type, const std::string &value)
{
RS_DBG4();
if (type == NET_PARAM_CONNECT_DOMAIN_ADDRESS)
{
RS_DBG1("got addr:", value);
RS_STACK_MUTEX(mSslMtx);
mI2pAddrB32 = value;
return true;
}
return pqissl::connect_parameter(type, value);
}
int pqissli2psam3::Initiate_Connection()
{
RS_DBG4();
if(waiting != WAITING_DELAY)
{
RS_ERR("Already Attempt in Progress!");
return pqiError;
}
switch (mState) {
case(pqisslSam3State::NONE):
RS_DBG2("NONE");
{
if(mConn) {
// how did we end up here?
#ifdef RS_USE_I2P_SAM3_I2PSAM
unix_close(mConn);
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
sam3CloseConnection(mConn);
#endif
}
mConn = 0;
// get SAM session
mConn = 0;
samSettings ss;
ss.session = nullptr;
rsAutoProxyMonitor::taskSync(autoProxyType::I2PSAM3, autoProxyTask::getSettings, static_cast<void*>(&ss));
#ifdef RS_USE_I2P_SAM3_I2PSAM
if (!!ss.session && !ss.session->isSick()) {
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
if (!!ss.session) {
#endif
RS_DBG3("NONE->DO_LOOKUP");
mState = pqisslSam3State::DO_LOOKUP;
} else {
RS_DBG3("NONE->DO_LOOKUP NOPE", ss.session);
}
}
break;
case(pqisslSam3State::DO_LOOKUP):
RS_DBG1("DO_LOOKUP");
if (!mI2pAddrLong.empty()) {
// skip lookup, it is highly unlikely/impossible for a public key to change (isn't it?)
mState = pqisslSam3State::WAIT_LOOKUP;
break;
}
{
i2p::address *addr = new i2p::address;
addr->clear();
addr->base32 = mI2pAddrB32;
rsAutoProxyMonitor::taskAsync(autoProxyType::I2PSAM3, autoProxyTask::lookupKey, this, static_cast<void*>(addr));
}
mState = pqisslSam3State::WAIT_LOOKUP;
break;
case(pqisslSam3State::DO_CONNECT):
RS_DBG2("DO_CONNECT");
{
auto wrapper = new samEstablishConnectionWrapper();
wrapper->address.clear();
wrapper->address.publicKey = mI2pAddrLong;
#ifdef RS_USE_I2P_SAM3_I2PSAM
wrapper->socket = 0;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
wrapper->connection = nullptr;
#endif
rsAutoProxyMonitor::taskAsync(autoProxyType::I2PSAM3, autoProxyTask::establishConnection, this, static_cast<void*>(wrapper));
}
mState = pqisslSam3State::WAIT_CONNECT;
break;
case(pqisslSam3State::DONE):
RS_DBG2("DONE");
if (setupSocket())
return pqiDone;
return pqiError;
/* waiting */
case(pqisslSam3State::WAIT_LOOKUP):
RS_DBG3("WAIT_LOOKUP");
break;
case(pqisslSam3State::WAIT_CONNECT):
RS_DBG3("WAIT_CONNECT");
break;
}
return pqiWait;
}
int pqissli2psam3::net_internal_close(int fd)
{
RS_DBG4();
// sanity check
#ifdef RS_USE_I2P_SAM3_I2PSAM
if (mConn && fd != mConn) {
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
if (mConn && fd != mConn->fd) {
#endif
// this should never happen!
//#ifdef RS_USE_I2P_SAM3_I2PSAM
// unix_close(mConn);
//#endif
//#ifdef RS_USE_I2P_SAM3_LIBSAM3
RS_ERR("fd != mConn");
// sam3CloseConnection(mConn);
//#endif
}
// now to the actuall closing
int ret = pqissl::net_internal_close(fd);
// int ret = 0;
//#ifdef RS_USE_I2P_SAM3_LIBSAM3
// if (mConn)
// ret = sam3CloseConnection(mConn);
//#endif
rsAutoProxyMonitor::taskAsync(autoProxyType::I2PSAM3, autoProxyTask::closeConnection, this, mConn),
// finally cleanup
mConn = 0;
mState = pqisslSam3State::NONE;
return ret;
}
void pqissli2psam3::taskFinished(taskTicket *&ticket)
{
RS_DBG4();
switch (ticket->task) {
case autoProxyTask::lookupKey:
{
auto addr = static_cast<i2p::address*>(ticket->data);
RS_STACK_MUTEX(mSslMtx);
if (ticket->result == autoProxyStatus::ok) {
mI2pAddrLong = addr->publicKey;
mState = pqisslSam3State::DO_CONNECT;
} else {
waiting = WAITING_FAIL_INTERFACE;
}
delete addr;
ticket->data = nullptr;
addr = nullptr;
}
break;
case autoProxyTask::establishConnection:
{
auto wrapper = static_cast<struct samEstablishConnectionWrapper*>(ticket->data);
RS_STACK_MUTEX(mSslMtx);
if (ticket->result == autoProxyStatus::ok) {
#ifdef RS_USE_I2P_SAM3_I2PSAM
mConn = wrapper->socket;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
mConn = wrapper->connection;
#endif
mState = pqisslSam3State::DONE;
} else {
waiting = WAITING_FAIL_INTERFACE;
}
delete wrapper;
ticket->data = nullptr;
wrapper = nullptr;
}
break;
case autoProxyTask::closeConnection:
// nothing to do here
break;
default:
RS_WARN("unkown task", ticket->task);
}
// clean up!
delete ticket;
ticket = nullptr;
}
bool pqissli2psam3::setupSocket()
{
/*
* This function contains the generis part from pqissl::Initiate_Connection()
*/
int err;
#ifdef RS_USE_I2P_SAM3_I2PSAM
int osock = mConn;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
int osock = mConn->fd;
#endif
err = unix_fcntl_nonblock(osock);
if (err < 0)
{
RS_ERR("Cannot make socket NON-Blocking:", err);
waiting = WAITING_FAIL_INTERFACE;
net_internal_close(osock);
return false;
}
#ifdef WINDOWS_SYS
/* Set TCP buffer size for Windows systems */
int sockbufsize = 0;
int size = sizeof(int);
err = getsockopt(osock, SOL_SOCKET, SO_RCVBUF, (char *)&sockbufsize, &size);
#ifdef PQISSL_DEBUG
if (err == 0) {
std::cerr << "pqissl::Initiate_Connection: Current TCP receive buffer size " << sockbufsize << std::endl;
} else {
std::cerr << "pqissl::Initiate_Connection: Error getting TCP receive buffer size. Error " << err << std::endl;
}
#endif
sockbufsize = 0;
err = getsockopt(osock, SOL_SOCKET, SO_SNDBUF, (char *)&sockbufsize, &size);
#ifdef PQISSL_DEBUG
if (err == 0) {
std::cerr << "pqissl::Initiate_Connection: Current TCP send buffer size " << sockbufsize << std::endl;
} else {
std::cerr << "pqissl::Initiate_Connection: Error getting TCP send buffer size. Error " << err << std::endl;
}
#endif
sockbufsize = WINDOWS_TCP_BUFFER_SIZE;
err = setsockopt(osock, SOL_SOCKET, SO_RCVBUF, (char *)&sockbufsize, sizeof(sockbufsize));
#ifdef PQISSL_DEBUG
if (err == 0) {
std::cerr << "pqissl::Initiate_Connection: TCP receive buffer size set to " << sockbufsize << std::endl;
} else {
std::cerr << "pqissl::Initiate_Connection: Error setting TCP receive buffer size. Error " << err << std::endl;
}
#endif
err = setsockopt(osock, SOL_SOCKET, SO_SNDBUF, (char *)&sockbufsize, sizeof(sockbufsize));
#ifdef PQISSL_DEBUG
if (err == 0) {
std::cerr << "pqissl::Initiate_Connection: TCP send buffer size set to " << sockbufsize << std::endl;
} else {
std::cerr << "pqissl::Initiate_Connection: Error setting TCP send buffer size. Error " << err << std::endl;
}
#endif
#endif // WINDOWS_SYS
mTimeoutTS = time(NULL) + mConnectTimeout;
//std::cerr << "Setting Connect Timeout " << mConnectTimeout << " Seconds into Future " << std::endl;
waiting = WAITING_SOCK_CONNECT;
sockfd = osock;
return true;
}

53
libretroshare/src/pqi/pqissli2psam3.h Normal file
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@ -0,0 +1,53 @@
#ifndef PQISSLI2PSAM3_H
#define PQISSLI2PSAM3_H
#include "pqi/pqissl.h"
#include "services/autoproxy/rsautoproxymonitor.h"
#include "services/autoproxy/p3i2psam3.h"
// Use a state machine as the whole pqi code is designed around them and some operation (like lookup) might be blocking
enum class pqisslSam3State : uint8_t {
NONE = 0,
DO_LOOKUP,
WAIT_LOOKUP,
DO_CONNECT,
WAIT_CONNECT,
DONE
};
class pqissli2psam3 : public pqissl, public autoProxyCallback
{
public:
pqissli2psam3(pqissllistener *l, PQInterface *parent, p3LinkMgr *lm);
// NetInterface interface
public:
bool connect_parameter(uint32_t type, const std::string &value);
// pqissl interface
protected:
int Initiate_Connection();
int net_internal_close(int fd);
// autoProxyCallback interface
public:
void taskFinished(taskTicket *&ticket);
private:
bool setupSocket();
private:
pqisslSam3State mState;
std::string mI2pAddrB32;
std::string mI2pAddrLong;
// samSession *mSs;
#ifdef RS_USE_I2P_SAM3_I2PSAM
int mConn;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
Sam3Connection *mConn;
#endif
};
#endif // PQISSLI2PSAM3_H

4
libretroshare/src/pqi/pqissllistener.h
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@ -186,8 +186,8 @@ public:
virtual int finaliseConnection(int fd, SSL *ssl, const RsPeerId& peerId,
const sockaddr_storage &raddr);
RS_SET_CONTEXT_DEBUG_LEVEL(2)
private:
std::map<RsPeerId, pqissl*> listenaddr;
RS_SET_CONTEXT_DEBUG_LEVEL(2)
};

20
libretroshare/src/pqi/pqisslpersongrp.cc
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@ -46,7 +46,7 @@ static struct RsLog::logInfo pqipersongrpzoneInfo = {RsLog::Default, "pqipersong
#endif
#include "pqi/pqisslproxy.h"
#include "pqi/pqissli2pbob.h"
#include "pqi/pqissli2psam3.h"
pqilistener * pqisslpersongrp::locked_createListener(const struct sockaddr_storage &laddr)
{
@ -74,26 +74,26 @@ pqiperson * pqisslpersongrp::locked_createPerson(const RsPeerId& id, pqilistener
std::cerr << std::endl;
#endif
// Use pqicI2PBOB for I2P
pqiconnect *pqicSOCKSProxy, *pqicI2PBOB;
// Use pqicI2P for I2P
pqiconnect *pqicSOCKSProxy, *pqicI2P;
{
pqisslproxy *pqis = new pqisslproxy((pqissllistener *) listener, pqip, mLinkMgr);
RsSerialiser *rss = new RsSerialiser();
rss->addSerialType(new RsRawSerialiser());
pqicSOCKSProxy = new pqiconnect(pqip, rss, pqis);
}
if (rsAutoProxyMonitor::instance()->isEnabled(autoProxyType::I2PBOB))
if (rsAutoProxyMonitor::instance()->isEnabled(autoProxyType::I2PSAM3))
{
pqissli2pbob *pqis = new pqissli2pbob((pqissllistener *) listener, pqip, mLinkMgr);
pqissli2psam3 *pqis = new pqissli2psam3((pqissllistener *) listener, pqip, mLinkMgr);
RsSerialiser *rss = new RsSerialiser();
rss->addSerialType(new RsRawSerialiser());
pqicI2PBOB = new pqiconnect(pqip, rss, pqis);
pqicI2P = new pqiconnect(pqip, rss, pqis);
} else {
pqicI2PBOB = pqicSOCKSProxy;
pqicI2P = pqicSOCKSProxy;
}
/* first select type based on peer */
uint32_t typePeer = mPeerMgr->getHiddenType(id);
switch (typePeer) {
@ -101,7 +101,7 @@ pqiperson * pqisslpersongrp::locked_createPerson(const RsPeerId& id, pqilistener
pqip -> addChildInterface(PQI_CONNECT_HIDDEN_TOR_TCP, pqicSOCKSProxy);
break;
case RS_HIDDEN_TYPE_I2P:
pqip -> addChildInterface(PQI_CONNECT_HIDDEN_I2P_TCP, pqicI2PBOB);
pqip -> addChildInterface(PQI_CONNECT_HIDDEN_I2P_TCP, pqicI2P);
break;
default:
/* peer is not a hidden one but we are */
@ -109,7 +109,7 @@ pqiperson * pqisslpersongrp::locked_createPerson(const RsPeerId& id, pqilistener
uint32_t typeOwn = mPeerMgr->getHiddenType(AuthSSL::getAuthSSL()->OwnId());
switch (typeOwn) {
case RS_HIDDEN_TYPE_I2P:
pqip -> addChildInterface(PQI_CONNECT_HIDDEN_I2P_TCP, pqicI2PBOB);
pqip -> addChildInterface(PQI_CONNECT_HIDDEN_I2P_TCP, pqicI2P);
break;
default:
/* this case shouldn't happen! */

2
libretroshare/src/retroshare/rsinit.h
View File

@ -195,7 +195,7 @@ public:
/*
* Setup Hidden Location;
*/
static void SetHiddenLocation(const std::string& hiddenaddress, uint16_t port, bool useBob);
static void SetHiddenLocation(const std::string& hiddenaddress, uint16_t port, bool useI2p);
static bool LoadPassword(const std::string& passwd) ;

6
libretroshare/src/rsserver/p3face.h
View File

@ -43,7 +43,7 @@
class p3heartbeat;
class p3discovery2;
class p3I2pBob;
class p3I2pSam3;
/* GXS Classes - just declare the classes.
so we don't have to totally recompile to switch */
@ -161,8 +161,8 @@ public:
p3ChatService *chatSrv;
p3StatusService *mStatusSrv;
p3GxsTunnelService *mGxsTunnels;
#ifdef RS_USE_I2P_BOB
p3I2pBob *mI2pBob;
#ifdef RS_USE_I2P_SAM3
p3I2pSam3 *mI2pSam3;
#endif
// This list contains all threaded services. It will be used to shut them down properly.

51
libretroshare/src/rsserver/rsinit.cc
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@ -170,7 +170,7 @@ struct RsInitConfig
std::string hiddenNodeAddress;
uint16_t hiddenNodePort;
bool hiddenNodeI2PBOB;
bool hiddenNodeI2P;
/* Logging */
bool haveLogFile;
@ -664,13 +664,13 @@ void RsInit::setAutoLogin(bool autoLogin){
}
/* Setup Hidden Location; */
void RsInit::SetHiddenLocation(const std::string& hiddenaddress, uint16_t port, bool useBob)
void RsInit::SetHiddenLocation(const std::string& hiddenaddress, uint16_t port, bool useI2p)
{
/* parse the bugger (todo) */
rsInitConfig->hiddenNodeSet = true;
rsInitConfig->hiddenNodeAddress = hiddenaddress;
rsInitConfig->hiddenNodePort = port;
rsInitConfig->hiddenNodeI2PBOB = useBob;
rsInitConfig->hiddenNodeI2P = useI2p;
}
@ -718,6 +718,7 @@ RsGRouter *rsGRouter = NULL ;
#endif // def RS_USE_LIBUPNP
#include "services/autoproxy/p3i2pbob.h"
#include "services/autoproxy/p3i2psam3.h"
#include "services/autoproxy/rsautoproxymonitor.h"
#include "services/p3gxsreputation.h"
@ -923,9 +924,9 @@ int RsServer::StartupRetroShare()
mNetMgr->setManagers(mPeerMgr, mLinkMgr);
rsAutoProxyMonitor *autoProxy = rsAutoProxyMonitor::instance();
#ifdef RS_USE_I2P_BOB
mI2pBob = new p3I2pBob(mPeerMgr);
autoProxy->addProxy(autoProxyType::I2PBOB, mI2pBob);
#ifdef RS_USE_I2P_SAM3
mI2pSam3 = new p3I2pSam3(mPeerMgr);
autoProxy->addProxy(autoProxyType::I2PSAM3, mI2pSam3);
#endif
//load all the SSL certs as friends
@ -1655,8 +1656,9 @@ int RsServer::StartupRetroShare()
mConfigMgr->addConfiguration("wire.cfg", wire_ns);
#endif
#endif //RS_ENABLE_GXS
#ifdef RS_USE_I2P_BOB
mConfigMgr->addConfiguration("I2PBOB.cfg", mI2pBob);
#ifdef RS_USE_I2P_SAM3
// to make migration easiert, SAM will use BOBs configuration, as they are compatible / the same.
mConfigMgr->addConfiguration("I2PBOB.cfg", mI2pSam3);
#endif
mPluginsManager->addConfigurations(mConfigMgr) ;
@ -1709,34 +1711,33 @@ int RsServer::StartupRetroShare()
{
std::cout << "RsServer::StartupRetroShare setting up hidden locations" << std::endl;
if (rsInitConfig->hiddenNodeI2PBOB) {
std::cout << "RsServer::StartupRetroShare setting up BOB" << std::endl;
if (rsInitConfig->hiddenNodeI2P) {
std::cout << "RsServer::StartupRetroShare setting up SAMv3" << std::endl;
// we need a local port!
mNetMgr->checkNetAddress();
// add i2p proxy
// bob will use this address
sockaddr_storage i2pInstance;
sockaddr_storage_ipv4_aton(i2pInstance, rsInitConfig->hiddenNodeAddress.c_str());
mPeerMgr->setProxyServerAddress(RS_HIDDEN_TYPE_I2P, i2pInstance);
std::string addr; // will be set by auto proxy service
uint16_t port = rsInitConfig->hiddenNodePort; // unused by bob
uint16_t port; // unused by SAM
bool r = autoProxy->initialSetup(autoProxyType::I2PBOB, addr, port);
bool r = autoProxy->initialSetup(autoProxyType::I2PSAM3, addr, port);
if (r && !addr.empty()) {
mPeerMgr->setupHiddenNode(addr, port);
// now enable bob
bobSettings bs;
autoProxy->taskSync(autoProxyType::I2PBOB, autoProxyTask::getSettings, &bs);
bs.enable = true;
autoProxy->taskSync(autoProxyType::I2PBOB, autoProxyTask::setSettings, &bs);
// now enable SAM
samSettings ss;
autoProxy->taskSync(autoProxyType::I2PSAM3, autoProxyTask::getSettings, &ss);
ss.enable = true;
autoProxy->taskSync(autoProxyType::I2PSAM3, autoProxyTask::setSettings, &ss);
} else {
std::cerr << "RsServer::StartupRetroShare failed to receive keys" << std::endl;
/// TODO add notify for failed bob setup
/// TODO add notify for failed i2p setup
}
} else {
mPeerMgr->setupHiddenNode(rsInitConfig->hiddenNodeAddress, rsInitConfig->hiddenNodePort);
@ -1758,19 +1759,17 @@ int RsServer::StartupRetroShare()
if (rsInitConfig->hiddenNodeSet) {
// newly created location
// mNetMgr->checkNetAddress() will setup ports for us
#if 0 // this was used for BOB but is not requires for SAMv3
// trigger updates for auto proxy services
std::vector<autoProxyType::autoProxyType_enum> types;
// i2p bob need to rebuild its command map
types.push_back(autoProxyType::I2PBOB);
rsAutoProxyMonitor::taskSync(types, autoProxyTask::reloadConfig);
#endif
}
/**************************************************************************/
/* startup (stuff dependent on Ids/peers is after this point) */
/**************************************************************************/
autoProxy->startAll();
pqih->init_listener();
@ -1803,8 +1802,8 @@ int RsServer::StartupRetroShare()
/**************************************************************************/
// auto proxy threads
#ifdef RS_USE_I2P_BOB
startServiceThread(mI2pBob, "I2P-BOB");
#ifdef RS_USE_I2P_SAM3
startServiceThread(mI2pSam3, "I2P-SAM3");
#endif
#ifdef RS_ENABLE_GXS

894
libretroshare/src/services/autoproxy/p3i2psam3.cpp Normal file
View File

@ -0,0 +1,894 @@
#include "p3i2psam3.h"
#ifdef RS_USE_I2P_SAM3_LIBSAM3
#include <libsam3.h>
#endif
#ifdef RS_USE_I2P_SAM3_I2PSAM
#include "util/i2psam.h"
#endif
#include "pqi/p3peermgr.h"
#include "rsitems/rsconfigitems.h"
static const std::string kConfigKeySAM3Enable = "SAM3_ENABLE";
static const std::string kConfigKeyDestPriv = "DEST_PRIV";
static const std::string kConfigKeyInLength = "IN_LENGTH";
static const std::string kConfigKeyInQuantity = "IN_QUANTITY";
static const std::string kConfigKeyInVariance = "IN_VARIANCE";
static const std::string kConfigKeyInBackupQuantity = "IN_BACKUPQUANTITY";
static const std::string kConfigKeyOutLength = "OUT_LENGTH";
static const std::string kConfigKeyOutQuantity = "OUT_QUANTITY";
static const std::string kConfigKeyOutVariance = "OUT_VARIANCE";
static const std::string kConfigKeyOutBackupQuantity = "OUT_BACKUPQUANTITY";
#ifdef RS_I2P_SAM3_BOB_COMPAT
// used for migration from BOB to SAM
static const std::string kConfigKeyBOBEnable = "BOB_ENABLE";
static const std::string kConfigKeyBOBKey = "BOB_KEY";
static const std::string kConfigKeyBOBAddr = "BOB_ADDR";
#endif
static constexpr bool kDefaultSAM3Enable = false;
RS_SET_CONTEXT_DEBUG_LEVEL(4)
// copy from i2psam.cpp
//#define I2P_DESTINATION_SIZE 516
static void inline doSleep(std::chrono::duration<long, std::ratio<1,1000>> timeToSleepMS) {
std::this_thread::sleep_for(timeToSleepMS);
}
p3I2pSam3::p3I2pSam3(p3PeerMgr *peerMgr) :
mConfigLoaded(false), mPeerMgr(peerMgr), mPending(), mLock("p3i2p-sam3")
#ifdef RS_USE_I2P_SAM3_LIBSAM3
, mLockSam3Access("p3i2p-sam3-access")
#endif
{
RS_DBG4();
// set defaults
mSetting.initDefault();
mSetting.enable = kDefaultSAM3Enable;
mSetting.session = nullptr;
libsam3_debug = 1;
}
bool p3I2pSam3::isEnabled()
{
RS_STACK_MUTEX(mLock);
return mSetting.enable;
}
bool p3I2pSam3::initialSetup(std::string &addr, uint16_t &/*port*/)
{
RS_DBG4();
RS_STACK_MUTEX(mLock);
if (!mSetting.address.publicKey.empty() || !mSetting.address.privateKey.empty())
RS_DBG("overwriting keys!");
bool success = generateKey(mSetting.address.publicKey, mSetting.address.privateKey);
if (!success) {
RS_DBG("failed to retrieve keys");
return false;
} else {
std::string s, c;
i2p::getKeyTypes(mSetting.address.publicKey, s, c);
RS_INFO("received key", s, c);
IndicateConfigChanged();
}
addr = mSetting.address.base32 = i2p::keyToBase32Addr(mSetting.address.publicKey);
return true;
}
void p3I2pSam3::processTaskAsync(taskTicket *ticket)
{
RS_DBG4();
switch (ticket->task) {
case autoProxyTask::stop: [[fallthrough]];
case autoProxyTask::start: [[fallthrough]];
case autoProxyTask::receiveKey: [[fallthrough]];
case autoProxyTask::lookupKey: [[fallthrough]];
case autoProxyTask::proxyStatusCheck: [[fallthrough]];
case autoProxyTask::establishConnection: [[fallthrough]];
case autoProxyTask::closeConnection:
{
RS_STACK_MUTEX(mLock);
mPending.push(ticket);
}
break;
case autoProxyTask::status: [[fallthrough]];
case autoProxyTask::getSettings: [[fallthrough]];
case autoProxyTask::setSettings: [[fallthrough]];
case autoProxyTask::getErrorInfo: [[fallthrough]];
case autoProxyTask::reloadConfig:
// These are supposed to be sync!
RS_DBG("unknown task or sync one!");
rsAutoProxyMonitor::taskError(ticket);
break;
}
}
void p3I2pSam3::processTaskSync(taskTicket *ticket)
{
// RS_DBG4();
const bool data = !!ticket->data;
switch (ticket->task) {
case autoProxyTask::status:
{
samStatus *ss = static_cast<struct samStatus *>(ticket->data);
RS_STACK_MUTEX(mLock);
ss->state = mState;
if (mSetting.session)
ss->sessionName = mSetting.session->channel;
else
ss->sessionName = "none";
}
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
break;
case autoProxyTask::getSettings:
// check if everything needed is set
if (!data) {
RS_DBG("autoProxyTask::getSettings data is missing");
rsAutoProxyMonitor::taskError(ticket);
break;
}
// get settings
{
RS_STACK_MUTEX(mLock);
*static_cast<struct samSettings *>(ticket->data) = mSetting;
}
// finish task
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
break;
case autoProxyTask::setSettings:
// check if everything needed is set
if (!data) {
RS_DBG("autoProxyTask::setSettings data is missing");
rsAutoProxyMonitor::taskError(ticket);
break;
}
// set settings
{
RS_STACK_MUTEX(mLock);
mSetting = *static_cast<struct samSettings *>(ticket->data);
updateSettings_locked();
}
// finish task
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
break;
case autoProxyTask::getErrorInfo:
#ifdef RS_USE_I2P_SAM3_LIBSAM3
*static_cast<std::string *>(ticket->data) = mSetting.session->error;
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
#else
rsAutoProxyMonitor::taskError(ticket);
#endif
break;
case autoProxyTask::reloadConfig:
{
RS_STACK_MUTEX(mLock);
updateSettings_locked();
}
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
break;
case autoProxyTask::stop:
#if 0 // doesn't seem to work, socket stays "CLOSE_WAIT"
// there can be a case where libsam3 will block forever because for some reason it does not detect that the socket it has is dead
// as a workaroung kill it from here
if (mState == samStatus::samState::connectSession || mState == samStatus::samState::connectForward) {
// lock should be held by the main thread
if (!mTmpSession) {
// now it's getting weird
RS_WARN("session is nullptr but mState says it is connecting.");
// no break! just ignore for now ...
} else {
// just close it from here, libsam3 is not thread safe.
// a bit of a hack but should do the trick
// sam3CloseSession(mSetting.session);
sam3tcpDisconnect(mTmpSession->fd);
// no break! continue as usual to keep everything in line
}
}
#endif
[[fallthrough]];
case autoProxyTask::start: [[fallthrough]];
case autoProxyTask::receiveKey: [[fallthrough]];
case autoProxyTask::lookupKey: [[fallthrough]];
case autoProxyTask::proxyStatusCheck: [[fallthrough]];
case autoProxyTask::establishConnection: [[fallthrough]];
case autoProxyTask::closeConnection:
// These are supposed to be async!
RS_WARN("unknown task or async one!");
rsAutoProxyMonitor::taskError(ticket);
break;
}
}
void p3I2pSam3::threadTick()
{
// {
// RS_STACK_MUTEX(mLock);
// Dbg4() << __PRETTY_FUNCTION__ << " mPending: " << mPending.size() << std::endl;
// }
if(mPending.empty()) {
// sleep outisde of lock!
doSleep(std::chrono::milliseconds(250));
return;
}
// get task
taskTicket *tt = nullptr;
{
RS_STACK_MUTEX(mLock);
tt = mPending.front();
mPending.pop();
}
switch (tt->task) {
case autoProxyTask::stop:
mState = samStatus::samState::offline;
stopForwarding();
stopSession();
rsAutoProxyMonitor::taskDone(tt, autoProxyStatus::offline);
break;
case autoProxyTask::start:
{
if (!mSetting.enable) {
rsAutoProxyMonitor::taskDone(tt, autoProxyStatus::disabled);
break;
}
// create main session
mState = samStatus::samState::connectSession;
bool ret = startSession();
if (!ret) {
mState = samStatus::samState::offline;
rsAutoProxyMonitor::taskError(tt);
break;
}
// start forwarding
mState = samStatus::samState::connectForward;
ret = startForwarding();
// finish ticket
if (ret) {
mState = samStatus::samState::online;
rsAutoProxyMonitor::taskDone(tt, autoProxyStatus::online);
} else {
mState = samStatus::samState::offline;
rsAutoProxyMonitor::taskError(tt);
}
}
break;
case autoProxyTask::receiveKey:
{
i2p::address *addr = static_cast<i2p::address *>(tt->data);
if (generateKey(addr->publicKey, addr->privateKey)) {
addr->base32 = i2p::keyToBase32Addr(addr->publicKey);
rsAutoProxyMonitor::taskDone(tt, autoProxyStatus::ok);
} else {
rsAutoProxyMonitor::taskError(tt);
}
}
break;
case autoProxyTask::lookupKey:
lookupKey(tt);
#ifdef RS_USE_I2P_SAM3_I2PSAM
// artificially delay following operations as i2psam uses time(null) as rng seed
doSleep(std::chrono::seconds(1));
#endif
break;
case autoProxyTask::proxyStatusCheck:
{
// TODO better detection of status
bool ok;
#ifdef RS_USE_I2P_SAM3_I2PSAM
ok = !mSetting.session->isSick();
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
ok = !!mSetting.session->fd;
ok &= !!mSetting.session->fwd_fd;
#endif // RS_USE_I2P_SAM3_LIBSAM3
*static_cast<bool*>(tt->data) = ok;
rsAutoProxyMonitor::taskDone(tt, ok ? autoProxyStatus::ok : autoProxyStatus::error);
}
break;
case autoProxyTask::establishConnection:
establishConnection(tt);
break;
case autoProxyTask::closeConnection:
closeConnection(tt);
break;
case autoProxyTask::status: [[fallthrough]];
case autoProxyTask::getSettings: [[fallthrough]];
case autoProxyTask::setSettings: [[fallthrough]];
case autoProxyTask::getErrorInfo: [[fallthrough]];
case autoProxyTask::reloadConfig:
RS_ERR("unable to handle! This is a bug! task:", tt->task);
rsAutoProxyMonitor::taskError(tt);
break;
}
tt = nullptr;
// give i2p backend some time
doSleep(std::chrono::milliseconds(100));
}
RsSerialiser *p3I2pSam3::setupSerialiser()
{
RsSerialiser* rsSerialiser = new RsSerialiser();
rsSerialiser->addSerialType(new RsGeneralConfigSerialiser());
return rsSerialiser;
}
#define addKVS(_key, _value) \
kv.key = _key;\
kv.value = _value;\
vitem->tlvkvs.pairs.push_back(kv);
#define addKVSInt(_key, _value) \
kv.key = _key;\
rs_sprintf(kv.value, "%d", _value);\
vitem->tlvkvs.pairs.push_back(kv);
bool p3I2pSam3::saveList(bool &cleanup, std::list<RsItem *> &lst)
{
RS_DBG4();
cleanup = true;
RsConfigKeyValueSet *vitem = new RsConfigKeyValueSet;
RsTlvKeyValue kv;
RS_STACK_MUTEX(mLock);
addKVS(kConfigKeySAM3Enable, mSetting.enable ? "TRUE" : "FALSE")
addKVS(kConfigKeyDestPriv, mSetting.address.privateKey);
addKVSInt(kConfigKeyInLength, mSetting.inLength)
addKVSInt(kConfigKeyInQuantity, mSetting.inQuantity)
addKVSInt(kConfigKeyInVariance, mSetting.inVariance)
addKVSInt(kConfigKeyInBackupQuantity, mSetting.inBackupQuantity)
addKVSInt(kConfigKeyOutLength, mSetting.outLength)
addKVSInt(kConfigKeyOutQuantity, mSetting.outQuantity)
addKVSInt(kConfigKeyOutVariance, mSetting.outVariance)
addKVSInt(kConfigKeyOutBackupQuantity, mSetting.outBackupQuantity)
#ifdef RS_I2P_SAM3_BOB_COMPAT
// these allow SAMv3 users to switch back to BOB
// remove after some time
addKVS(kConfigKeyBOBEnable, mSetting.enable ? "TRUE" : "FALSE")
addKVS(kConfigKeyBOBKey, mSetting.address.privateKey)
addKVS(kConfigKeyBOBAddr, mSetting.address.base32)
#endif
lst.push_back(vitem);
return true;
}
#undef addKVS
#undef addKVSUInt
#define getKVSUInt(_kit, _key, _value) \
else if (_kit->key == _key) {\
std::istringstream is(_kit->value);\
int tmp;\
is >> tmp;\
_value = (int8_t)tmp;\
}
bool p3I2pSam3::loadList(std::list<RsItem *> &load)
{
RS_DBG4();
std::string priv;
priv.clear();
for(std::list<RsItem*>::const_iterator it = load.begin(); it!=load.end(); ++it) {
RsConfigKeyValueSet *vitem = dynamic_cast<RsConfigKeyValueSet*>(*it);
if(vitem != NULL) {
RS_STACK_MUTEX(mLock);
for(std::list<RsTlvKeyValue>::const_iterator kit = vitem->tlvkvs.pairs.begin(); kit != vitem->tlvkvs.pairs.end(); ++kit) {
if (kit->key == kConfigKeySAM3Enable)
mSetting.enable = kit->value == "TRUE";
else if (kit->key == kConfigKeyDestPriv)
priv = kit->value;
getKVSUInt(kit, kConfigKeyInLength, mSetting.inLength)
getKVSUInt(kit, kConfigKeyInQuantity, mSetting.inQuantity)
getKVSUInt(kit, kConfigKeyInVariance, mSetting.inVariance)
getKVSUInt(kit, kConfigKeyInBackupQuantity, mSetting.inBackupQuantity)
getKVSUInt(kit, kConfigKeyOutLength, mSetting.outLength)
getKVSUInt(kit, kConfigKeyOutQuantity, mSetting.outQuantity)
getKVSUInt(kit, kConfigKeyOutVariance, mSetting.outVariance)
getKVSUInt(kit, kConfigKeyOutBackupQuantity, mSetting.outBackupQuantity)
#ifdef RS_I2P_SAM3_BOB_COMPAT
// import BOB settings
else if (kit->key == kConfigKeyBOBEnable)
mSetting.enable = kit->value == "TRUE";
else if (kit->key == kConfigKeyBOBKey) {
// don't overwirte, just import when not set already!
if (priv.empty())
priv = kit->value;
}
#endif
else
RS_INFO("unknown key:", kit->key);
}
}
delete vitem;
}
// get the pub key
std::string pub = i2p::publicKeyFromPrivate(priv);
if (pub.empty() || priv.empty())
RS_DBG("no destination to load");
else {
RS_STACK_MUTEX(mLock);
mSetting.address.publicKey = pub;
mSetting.address.privateKey = priv;
mSetting.address.base32 = i2p::keyToBase32Addr(pub);
}
RS_STACK_MUTEX(mLock);
mConfigLoaded = true;
return true;
}
#undef getKVSUInt
bool p3I2pSam3::startSession()
{
RS_DBG4();
constexpr size_t len = 8;
const std::string location = RsRandom::alphaNumeric(len);
const std::string nick = "RetroShare-" + location;
std::vector<std::string> params;
{
RS_STACK_MUTEX(mLock);
// length
params.push_back(i2p::makeOption("inbound.length", mSetting.inLength));
params.push_back(i2p::makeOption("outbound.length", mSetting.outLength));
// variance
params.push_back(i2p::makeOption("inbound.lengthVariance", + mSetting.inVariance));
params.push_back(i2p::makeOption("outbound.lengthVariance", + mSetting.outVariance));
// quantity
params.push_back(i2p::makeOption("inbound.quantity", + mSetting.inQuantity));
params.push_back(i2p::makeOption("outbound.quantity", + mSetting.outQuantity));
// backup quantity
params.push_back(i2p::makeOption("inbound.backupQuantity", + mSetting.inBackupQuantity));
params.push_back(i2p::makeOption("outbound.backupQuantity", + mSetting.outBackupQuantity));
}
std::string paramsStr;
for (auto &&p : params)
paramsStr.append(p + " ");
// keep trailing space for easier extending when necessary
#ifdef RS_USE_I2P_SAM3_I2PSAM
if(mSetting.session) {
RS_STACK_MUTEX(mLock);
delete mSetting.session; // stopForwardingAll(); is called in destructor
mSetting.session = nullptr;
}
SAM::StreamSession *session;
if(!mSetting.address.privateKey.empty()) {
Dbg3() << __PRETTY_FUNCTION__ << " with destination" << std::endl;
session = new SAM::StreamSession(nick, SAM_DEFAULT_ADDRESS, SAM_DEFAULT_PORT, mSetting.address.privateKey, paramsStr);
} else {
Dbg3() << __PRETTY_FUNCTION__ << " without destination" << std::endl;
session = new SAM::StreamSession(nick, SAM_DEFAULT_ADDRESS, SAM_DEFAULT_PORT, SAM_GENERATE_MY_DESTINATION, paramsStr, "DSA_SHA1");
}
if (!session || session->isSick()) {
return false;
}
/*
* i2psam is sometimes unable to reliable read the public key, which is crucial to base32 address generation
* (due to the fact that is assumes it's length wrongly)
*
* The following are attempts to reliable receive our public key
*/
const auto dest = session->getMyDestination();
// auto copy = dest;
std::string pubKey1 = dest.pub;
std::string pubKey2(dest.pub);
i2p::validatePubkeyFromPrivKey(pubKey2, dest.priv);
/*
* pubkeys:
* 1: from initial call (== dest.pub)
* 2: from parsing (was == dest.pub
*/
Dbg3() << __PRETTY_FUNCTION__ << " figuring out our pubKey: p1 " << pubKey1 << std::endl;
Dbg3() << __PRETTY_FUNCTION__ << " figuring out our pubKey: p2 " << pubKey2 << std::endl;
if (pubKey1 == pubKey2) {
// unchanged
Dbg3() << __PRETTY_FUNCTION__ << " figuring out our pubKey: p1 == p2" << std::endl;
} else {
// parsed pub key is different, prefer parsed one
pubKey1 = pubKey2;
Dbg3() << __PRETTY_FUNCTION__ << " figuring out our pubKey: p1 != p2" << std::endl;
}
SAM::FullDestination dest2(pubKey1, dest.priv, true);
// populate settings
RS_STACK_MUTEX(mLock);
mSetting.session = session;
if (!mSetting.address.publicKey.empty() && mSetting.address.publicKey != dest2.pub)
// This should be ok for non hidden locations. This should be a problem for hidden i2p locations...
RsDbg() << __PRETTY_FUNCTION__ << " public key changed! Yet unsure if this is ok or a problem" << std::endl;
mSetting.address.publicKey = dest2.pub;
mSetting.address.base32 = i2p::keyToBase32Addr(dest2.pub);
// do not overwrite the private key, if any!!
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
int ret;
if (mSetting.session) {
stopSession();
}
auto session = new Sam3Session();
// add nick
paramsStr.append("inbound.nickname=" + nick); // leading space is already there
{
RS_STACK_MUTEX(mLockSam3Access);
if(!mSetting.address.privateKey.empty()) {
RS_DBG3("with destination");
ret = sam3CreateSilentSession(session, SAM3_HOST_DEFAULT, SAM3_PORT_DEFAULT, mSetting.address.privateKey.c_str(), Sam3SessionType::SAM3_SESSION_STREAM, Sam3SigType::EdDSA_SHA512_Ed25519, paramsStr.c_str());
} else {
RS_DBG("without destination");
ret = sam3CreateSilentSession(session, SAM3_HOST_DEFAULT, SAM3_PORT_DEFAULT, SAM3_DESTINATION_TRANSIENT, Sam3SessionType::SAM3_SESSION_STREAM, Sam3SigType::EdDSA_SHA512_Ed25519, paramsStr.c_str());
}
}
if (ret != 0) {
delete session;
session = nullptr;
return false;
}
#if 0 // this check is useless. For non i2p hidden locations the public key is temporal anyway and for i2p hidden ones, it is part of the (fixed) private key.
if (!mSetting.address.publicKey.empty() && mSetting.address.publicKey != session->pubkey)
// This should be ok for non hidden locations. This should be a problem for hidden i2p locations...
RS_DBG("public key changed! Yet unsure if this is ok or a problem. Should be fine for non i2p hidden locations or clear net.");
#endif
/*
* Note: sam3CreateSession will issue a name looup of "ME" to receive its public key, thus it is always correct.
* No need to use i2p::publicKeyFromPrivate()
*/
RS_STACK_MUTEX(mLock);
mSetting.session = session;
mSetting.address.publicKey = session->pubkey;
mSetting.address.base32 = i2p::keyToBase32Addr(session->pubkey);
// do not overwrite the private key, if any!!
#endif
RS_DBG1("nick:", nick, "address:", mSetting.address.base32);
RS_DBG2(" myDestination.pub ", mSetting.address.publicKey);
RS_DBG2(" myDestination.priv", mSetting.address.privateKey);
return true;
}
bool p3I2pSam3::startForwarding()
{
RS_DBG4();
if(mSetting.address.privateKey.empty()) {
RS_DBG3("no private key set");
// IMPORANT: return true here!
// since there is no forward session for non hidden nodes, this funtion is successfull by doing nothing
return true;
}
if (!mSetting.session) {
RS_WARN("no session found!");
return false;
}
peerState ps;
mPeerMgr->getOwnNetStatus(ps);
#ifdef RS_USE_I2P_SAM3_I2PSAM
auto ret = mSetting.session->forward(sockaddr_storage_iptostring(ps.localaddr).c_str(), sockaddr_storage_port(ps.localaddr), true);
if (!ret.isOk)
RsDbg() << __PRETTY_FUNCTION__ << " forward failed" << std::endl;
else
Dbg2() << __PRETTY_FUNCTION__ << " forward successfull" << std::endl;
return ret.isOk;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
RS_STACK_MUTEX(mLockSam3Access);
int ret = sam3StreamForward(mSetting.session, sockaddr_storage_iptostring(ps.localaddr).c_str(), sockaddr_storage_port(ps.localaddr));
if (ret < 0) {
RS_DBG("forward failed, due to", mSetting.session->error);
return false;
}
#endif
return true;
}
void p3I2pSam3::stopSession()
{
RS_DBG4();
{
RS_STACK_MUTEX(mLock);
if (!mSetting.session)
return;
#ifdef RS_USE_I2P_SAM3_I2PSAM
// TODO cleanup sockets
delete mSetting.session; // will stop forwarding, too
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
// swap connections
mInvalidConnections = mValidConnections;
mValidConnections.clear();
RS_STACK_MUTEX(mLockSam3Access);
sam3CloseSession(mSetting.session);
delete mSetting.session;
#endif
mSetting.session = nullptr;
mState = samStatus::samState::offline;
}
// At least i2pd doesn't like to instantaniously stop and (re)start a session, wait here just a little bit.
// Not ideal but does the trick.
// (This happens when using the "restart" button in the settings.)
doSleep(std::chrono::seconds(10));
}
void p3I2pSam3::stopForwarding()
{
// nothing to do here, forwarding is stop when closing the seassion
}
bool p3I2pSam3::generateKey(std::string &pub, std::string &priv)
{
RS_DBG4();
pub.clear();
priv.clear();
#ifdef RS_USE_I2P_SAM3_I2PSAM
auto ss = new SAM::StreamSession("RS-destgen");
auto ret = ss->destGenerate();
if (!ret.isOk)
return false;
auto dest = ret.value;
pub = std::string(dest.pub);
priv = std::string(dest.priv);
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
// The session is only usef for transporting the data
Sam3Session ss;
if (0 > sam3GenerateKeys(&ss, SAM3_HOST_DEFAULT, SAM3_PORT_DEFAULT, Sam3SigType::EdDSA_SHA512_Ed25519)) {
RS_DBG("got error:", ss.error);
return false;
}
pub = std::string(ss.pubkey);
priv = std::string(ss.privkey);
#endif
RS_DBG2("publuc key / address", pub);
RS_DBG2("private key", priv);
return true;
}
void p3I2pSam3::lookupKey(taskTicket *ticket)
{
// this can be called independend of the main SAM session!
auto addr = static_cast<i2p::address*>(ticket->data);
if (addr->base32.empty()) {
RS_ERR("lookupKey: called with empty address");
rsAutoProxyMonitor::taskError(ticket);
return;
}
#ifdef RS_USE_I2P_SAM3_I2PSAM
auto sam = mSetting.session;
RsThread::async([ticket, sam]()
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
RsThread::async([ticket]()
#endif
{
auto addr = static_cast<i2p::address*>(ticket->data);
#ifdef RS_USE_I2P_SAM3_I2PSAM
auto r = sam->namingLookup(addr->base32);
if (!r.isOk) {
// get error
RsDbg() << __PRETTY_FUNCTION__ << " key: " << addr->base32 << std::endl;
RsDbg() << __PRETTY_FUNCTION__ << " got error!" << std::endl;
rsAutoProxyMonitor::taskError(ticket);
} else {
addr->publicKey = r.value;
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
Dbg1() << __PRETTY_FUNCTION__ << " success " << std::endl;
}
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
// The session is only usef for transporting the data
Sam3Session ss;
int ret = sam3NameLookup(&ss, SAM3_HOST_DEFAULT, SAM3_PORT_DEFAULT, addr->base32.c_str());
if (ret < 0) {
// get error
RS_DBG("key:", addr->base32);
RS_DBG("got error:", ss.error);
rsAutoProxyMonitor::taskError(ticket);
} else {
addr->publicKey = ss.destkey;
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
RS_DBG1("success");
}
#endif
});
}
void p3I2pSam3::establishConnection(taskTicket *ticket)
{
if (mState != samStatus::samState::online || !mSetting.session) {
RS_WARN("no session found!");
rsAutoProxyMonitor::taskError(ticket);
return;
}
samEstablishConnectionWrapper *wrapper = static_cast<samEstablishConnectionWrapper*>(ticket->data);
if (wrapper->address.publicKey.empty()) {
RS_ERR("no public key given");
rsAutoProxyMonitor::taskError(ticket);
return;
}
RsThread::async([ticket, this]() {
auto wrapper = static_cast<samEstablishConnectionWrapper*>(ticket->data);
#ifdef RS_USE_I2P_SAM3_I2PSAM
auto r = this->mSetting.session->connect(wrapper->address.publicKey.c_str(), false); // silent=true is broken!
if (!r.isOk) {
// get error
RsDbg() << __PRETTY_FUNCTION__ << " got error!" << std::endl;
rsAutoProxyMonitor::taskError(ticket);
} else {
// extract socket
wrapper->socket = r.value.get()->release();
Dbg1() << __PRETTY_FUNCTION__ << " success " << std::endl;
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
}
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
struct Sam3Connection *connection;
{
auto l = this->mLockSam3Access;
RS_STACK_MUTEX(l);
connection = sam3StreamConnect(this->mSetting.session, wrapper->address.publicKey.c_str());
}
if (!connection) {
// get error
RS_DBG("got error:", this->mSetting.session->error);
rsAutoProxyMonitor::taskError(ticket);
} else {
wrapper->connection = connection;
{
auto l = this->mLockSam3Access;
RS_STACK_MUTEX(l);
this->mValidConnections.push_back(connection);
}
RS_DBG1("success");
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
}
#endif
});
}
void p3I2pSam3::closeConnection(taskTicket *ticket)
{
Sam3Connection *con = static_cast<Sam3Connection*>(ticket->data);
if (mState == samStatus::samState::offline || !mSetting.session) {
// no session found, sam was likel stopped
} else {
RS_STACK_MUTEX(mLock);
bool callClose = true;
// search in current connections
auto it = std::find(mValidConnections.begin(), mValidConnections.end(), con);
if (it != mValidConnections.end()) {
mValidConnections.erase(it);
} else {
// search in old connections
it = std::find(mInvalidConnections.begin(), mInvalidConnections.end(), con);
if (it != mInvalidConnections.end()) {
// old connection, just ignore. *should* be freed already
callClose = false;
con = nullptr;
} else {
// weird
RS_WARN("could'n find connection!");
// best thing we can do here
callClose = false;
con = nullptr;
}
}
if (callClose) {
RS_STACK_MUTEX(mLockSam3Access);
sam3CloseConnection(con);
con = nullptr; // freed by above call
}
}
if (con) {
delete con;
con = nullptr;
}
ticket->data = nullptr;
rsAutoProxyMonitor::taskDone(ticket, autoProxyStatus::ok);
return;
}
void p3I2pSam3::updateSettings_locked()
{
RS_DBG4();
IndicateConfigChanged();
#if 0 // TODO recreat session when active, can we just recreat it?
if (mSs) {
stopSession();
startSession();
}
#endif
}

128
libretroshare/src/services/autoproxy/p3i2psam3.h Normal file
View File

@ -0,0 +1,128 @@
#ifndef P3I2PSAM3_H
#define P3I2PSAM3_H
#include <queue>
#include <list>
#include "services/autoproxy/rsautoproxymonitor.h"
#include "pqi/p3cfgmgr.h"
#include "util/i2pcommon.h"
#include "util/rsthreads.h"
/*
* This class implements I2P SAMv3 (Simple Anonymous Messaging) to allow RS
* to automatically setup tunnel to and from I2P.
* SAMv3 is a simple text-based interface: https://geti2p.net/de/docs/api/samv3
*
* For the actual SAM commands / low level stuff libsam3 (https://github.com/i2p/libsam3)
* is used with some minor adjustments, for exmaple, the FORWARD session is always silent.
*
* SAM in a nutshell works like this:
* 1) setup main/control session which configures everything (destination ID, tunnel number, hops number, and so on)
* 2) setup a forward session, so that I2P will establish a connection to RS for each incoming connection to our i2p destination
* 3a) query/lookup the destination (public key) for a given i2p address
* 3b) connect to the given destination
*
* An established connection (both incoming or outgoing) are then handed over to RS.
* The lifetime of a session (and its subordinates connections) is bound to their tcp socket. When the socket closes, the session is closed, too.
*
*/
class p3PeerMgr;
// typedef samSession is used to unify access to the session independent of the underlying library
#ifdef RS_USE_I2P_SAM3_I2PSAM
namespace SAM {
class StreamSession;
class I2pSocket;
}
typedef SAM::StreamSession samSession;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
class Sam3Session;
class Sam3Connection;
typedef Sam3Session samSession;
#endif
struct samSettings : i2p::settings {
samSession *session;
};
struct samEstablishConnectionWrapper {
i2p::address address;
#ifdef RS_USE_I2P_SAM3_I2PSAM
int socket;
#endif
#ifdef RS_USE_I2P_SAM3_LIBSAM3
Sam3Connection *connection;
#endif
};
struct samStatus {
std::string sessionName;
enum samState {
offline,
connectSession,
connectForward,
online
} state; // the name is kinda redundant ...
};
class p3I2pSam3 : public RsTickingThread, public p3Config, public autoProxyService
{
public:
p3I2pSam3(p3PeerMgr *peerMgr);
// autoProxyService interface
public:
bool isEnabled();
bool initialSetup(std::string &addr, uint16_t &port);
void processTaskAsync(taskTicket *ticket);
void processTaskSync(taskTicket *ticket);
// RsTickingThread interface
public:
void threadTick(); /// @see RsTickingThread
// p3Config interface
protected:
RsSerialiser *setupSerialiser();
bool saveList(bool &cleanup, std::list<RsItem *> &);
bool loadList(std::list<RsItem *> &load);
private:
bool startSession();
bool startForwarding();
void stopSession();
void stopForwarding();
bool generateKey(std::string &pub, std::string &priv);
void lookupKey(taskTicket *ticket);
void establishConnection(taskTicket *ticket);
void closeConnection(taskTicket *ticket);
void updateSettings_locked();
bool mConfigLoaded;
samSettings mSetting;
p3PeerMgr *mPeerMgr;
std::queue<taskTicket *> mPending;
// Used to report the state to the gui
// (Since the create session call/will can block and there is no easy way from outside the main thread to see
// what is going on, it is easier to store the current state in an extra variable independen from the main thread)
samStatus::samState mState;
// used to keep track of connections, libsam3 does it internally but it can be unreliable since pointers are shared
std::list<Sam3Connection *> mValidConnections, mInvalidConnections;
// mutex
RsMutex mLock;
#ifdef RS_USE_I2P_SAM3_LIBSAM3
RsMutex mLockSam3Access; // libsam3 is not thread safe! (except for key lookup)
#endif
};
#endif // P3I2PSAM3_H

20
libretroshare/src/services/autoproxy/rsautoproxymonitor.cc
View File

@ -329,14 +329,22 @@ autoProxyService *rsAutoProxyMonitor::lookUpService(autoProxyType::autoProxyType
bool rsAutoProxyMonitor::isAsyncTask(autoProxyTask::autoProxyTask_enum t)
{
// Explicit list all values, so that missing ones will be detected by the compiler.
switch (t) {
case autoProxyTask::start:
case autoProxyTask::stop:
case autoProxyTask::receiveKey:
case autoProxyTask::start: [[fallthrough]];
case autoProxyTask::stop: [[fallthrough]];
case autoProxyTask::receiveKey: [[fallthrough]];
case autoProxyTask::lookupKey: [[fallthrough]];
case autoProxyTask::establishConnection: [[fallthrough]];
case autoProxyTask::closeConnection:
return true;
break;
default:
break;
case autoProxyTask::status: [[fallthrough]];
case autoProxyTask::getSettings: [[fallthrough]];
case autoProxyTask::setSettings: [[fallthrough]];
case autoProxyTask::getErrorInfo: [[fallthrough]];
case autoProxyTask::reloadConfig: [[fallthrough]];
case autoProxyTask::proxyStatusCheck:
return false;
}
return false;
}

6
libretroshare/src/services/autoproxy/rsautoproxymonitor.h
View File

@ -31,7 +31,8 @@ class autoProxyCallback;
namespace autoProxyType {
enum autoProxyType_enum {
I2PBOB
// I2PBOB,
I2PSAM3
};
}
@ -41,7 +42,10 @@ namespace autoProxyTask {
start, ///< start up proxy
stop, ///< shut down proxy
receiveKey, ///< renew proxy key (if any)
lookupKey, ///< look up a base32 addr
proxyStatusCheck, ///< use to check if the proxy is still running
establishConnection, ///< create a connection to a given public key or base32 address
closeConnection, ///< closes a connection
/* sync tasks */
status, ///< get status from auto proxy
getSettings, ///< get setting from auto proxy

9
libretroshare/src/use_libretroshare.pri
View File

@ -90,6 +90,15 @@ rs_broadcast_discovery {
win32-g++|win32-clang-g++:dLibs *= wsock32
}
rs_sam3_libsam3 {
LIBSAM3_SRC_PATH=$$clean_path($${RS_SRC_PATH}/supportlibs/libsam3/)
LIBSAM3_BUILD_PATH=$$clean_path($${RS_BUILD_PATH}/supportlibs/libsam3/)
INCLUDEPATH *= $$clean_path($${LIBSAM3_SRC_PATH}/src/libsam3/)
DEPENDPATH *= $$clean_path($${LIBSAM3_BUILD_PATH})
QMAKE_LIBDIR *= $$clean_path($${LIBSAM3_BUILD_PATH})
LIBS *= -L$$clean_path($${LIBSAM3_BUILD_PATH}) -lsam3
}
static {
sLibs *= $$mLibs
} else {

7
libretroshare/src/util/i2pcommon.cpp
View File

@ -50,7 +50,7 @@ std::string publicKeyFromPrivate(std::string const &priv)
* https://geti2p.net/spec/common-structures#keysandcert
* https://geti2p.net/spec/common-structures#certificate
*/
if (priv.length() < 884) // base64 ( = 663 bytes = KeyCert + priv Keys)
if (priv.empty() || priv.length() < 884) // base64 ( = 663 bytes = KeyCert + priv Keys)
return std::string();
// creat a copy to work on, need to convert it to standard base64
@ -163,6 +163,9 @@ std::string publicKeyFromPrivate(std::string const &priv)
bool getKeyTypes(const std::string &key, std::string &signingKey, std::string &cryptoKey)
{
if (key.length() < 522) // base64 (391 bytes = 384 bytes + 7 bytes = KeysAndCert + Certificate)
return false;
// creat a copy to work on, need to convert it to standard base64
auto key_copy(key);
std::replace(key_copy.begin(), key_copy.end(), '~', '/');
@ -225,7 +228,7 @@ bool getKeyTypes(const std::string &key, std::string &signingKey, std::string &c
// now convert to string (this would be easier with c++17)
#define HELPER(a, b, c) \
case static_cast<typename std::underlying_type<a>::type>(a::c): \
b = "c"; \
b = #c; \
break;
switch (signingKeyType) {

2
libretroshare/src/util/i2pcommon.h
View File

@ -210,7 +210,7 @@ std::string publicKeyFromPrivate(const std::string &priv);
/**
* @brief getKeyTypes returns the name of the utilized algorithms used by the key
* @param key public key (private works, too)
* @param key public key
* @param signingKey name of the signing key, e.g. DSA_SHA1
* @param cryptoKey name of the crpyto key, e.g. ElGamal
* @return true on success, false otherwise

6
retroshare-gui/src/gui/GenCertDialog.cpp
View File

@ -539,12 +539,12 @@ void GenCertDialog::genPerson()
std::string hl = ui.hiddenaddr_input->text().toStdString();
uint16_t port = ui.hiddenport_spinBox->value();
bool useBob = ui.cbUseBob->isChecked();
bool useI2p = ui.cbUseBob->isChecked();
if (useBob && hl.empty())
if (useI2p && hl.empty())
hl = "127.0.0.1";
RsInit::SetHiddenLocation(hl, port, useBob); /* parses it */
RsInit::SetHiddenLocation(hl, port, useI2p); /* parses it */
}

29
retroshare-gui/src/gui/settings/ServerPage.ui
View File

@ -6,8 +6,8 @@
<rect>
<x>0</x>
<y>0</y>
<width>712</width>
<height>502</height>
<width>726</width>
<height>579</height>
</rect>
</property>
<layout class="QVBoxLayout" name="ServerPageVLayout">
@ -908,9 +908,9 @@ If you have issues connecting over Tor check the Tor logs too.</string>
</item>
</layout>
</widget>
<widget class="QWidget" name="hiddenServiceTabI2PBOB">
<widget class="QWidget" name="hiddenServiceTabI2P">
<attribute name="title">
<string>Automatic I2P/BOB</string>
<string>Automatic I2P</string>
</attribute>
<layout class="QVBoxLayout" name="hiddenServiceTabI2PBOBVLayout">
<item>
@ -918,7 +918,7 @@ If you have issues connecting over Tor check the Tor logs too.</string>
<item>
<widget class="QCheckBox" name="cb_enableBob">
<property name="text">
<string>Enable I2P BOB - changing this requires a restart to fully take effect</string>
<string>Enable I2P SAMv3 - changing this requires a restart to fully take effect</string>
</property>
</widget>
</item>
@ -950,7 +950,7 @@ If you have issues connecting over Tor check the Tor logs too.</string>
<item>
<widget class="QGroupBox" name="gbBob">
<property name="title">
<string>I2P Basic Open Bridge</string>
<string>I2P Simple Anonymous Messaging</string>
</property>
<layout class="QVBoxLayout" name="gbBobVLayout">
<item>
@ -990,6 +990,12 @@ If you have issues connecting over Tor check the Tor logs too.</string>
</item>
<item>
<widget class="QSpinBox" name="hiddenpage_proxyPort_i2p_2">
<property name="enabled">
<bool>false</bool>
</property>
<property name="toolTip">
<string>Not required for SAMv3</string>
</property>
<property name="minimum">
<number>10</number>
</property>
@ -1016,7 +1022,7 @@ If you have issues connecting over Tor check the Tor logs too.</string>
<string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;This led is green when the port listen on the left is active on your computer. It does not&lt;/p&gt;&lt;p&gt;mean that your Retroshare traffic transits though I2P. It will do so only if &lt;/p&gt;&lt;p&gt;you connect to Hidden nodes, or if you are running a Hidden node yourself.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
</property>
<property name="text">
<string>BOB accessible</string>
<string>SAM accessible</string>
</property>
</widget>
</item>
@ -1304,6 +1310,13 @@ If you have issues connecting over Tor check the Tor logs too.</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="samKeyInfo">
<property name="text">
<string notr="true">&lt;key info&gt;</string>
</property>
</widget>
</item>
</layout>
</item>
</layout>
@ -1359,7 +1372,7 @@ If you have issues connecting over Tor check the Tor logs too.</string>
<item>
<widget class="QLabel" name="lBobStatus">
<property name="text">
<string>BOB status</string>
<string>SAM status</string>
</property>
</widget>
</item>

21
retroshare.pri
View File

@ -140,11 +140,6 @@ rs_macos10.15:CONFIG -= rs_macos10.11
CONFIG *= no_rs_jsonapi
rs_jsonapi:CONFIG -= no_rs_jsonapi
# Disable i2p BOB support for automatically setting up an i2p tunnel for RS
# "CONFIG+=no_rs_bob"
CONFIG *= rs_bob
no_rs_bob:CONFIG -= rs_bob
# To enable channel indexing append the following assignation to qmake command
# line "CONFIG+=rs_deep_channels_index"
CONFIG *= no_rs_deep_channels_index
@ -209,6 +204,10 @@ no_rs_dh_init_check:CONFIG -= rs_dh_init_check
# many exported symbols.
retroshare_plugins:win32:CONFIG *= libretroshare_shared
CONFIG+=rs_sam3
CONFIG+=rs_sam3_libsam3
#CONFIG+=rs_sam3_i2psam
# Specify host precompiled jsonapi-generator path, appending the following
# assignation to qmake command line
# 'JSONAPI_GENERATOR_EXE=/myBuildDir/jsonapi-generator'. Required for JSON API
@ -559,10 +558,6 @@ rs_webui {
DEFINES *= RS_WEBUI
}
rs_bob {
DEFINES *= RS_USE_I2P_BOB
}
rs_deep_channels_index:DEFINES *= RS_DEEP_CHANNEL_INDEX
rs_deep_files_index:DEFINES *= RS_DEEP_FILES_INDEX
@ -576,6 +571,14 @@ rs_broadcast_discovery:DEFINES *= RS_BROADCAST_DISCOVERY
no_rs_dh_init_check:DEFINES *= RS_DISABLE_DIFFIE_HELLMAN_INIT_CHECK
rs_sam3: {
DEFINES *= RS_USE_I2P_SAM3
# this allows a downgrade from a SAMv3 build to a BOB build, can be removed in the future
DEFINES *= RS_I2P_SAM3_BOB_COMPAT
}
rs_sam3_libsam3: DEFINES *= RS_USE_I2P_SAM3_LIBSAM3
rs_sam3_i2psam: DEFINES *= RS_USE_I2P_SAM3_I2PSAM
debug {
rs_mutex_debug:DEFINES *= RS_MUTEX_DEBUG

14
supportlibs/libsam3/src/libsam3/libsam3.c
View File

@ -26,6 +26,10 @@
#include <sys/sysinfo.h>
#include <sys/types.h>
#ifdef WINDOWS_SYS
#include <winsock.h>
#endif // WINDOWS_SYS
////////////////////////////////////////////////////////////////////////////////
int libsam3_debug = 0;
@ -100,6 +104,11 @@ int sam3tcpConnectIP(uint32_t ip, int port) {
}
}
//
// Set this for all outgoing SAM connections. Most SAM commands should be answered rather fast except CREATE SESSION maybe.
// This should be enough to let SAM establish a session.
sam3tcpSetTimeoutSend(fd, 5 * 60 * 1000);
sam3tcpSetTimeoutReceive(fd, 5 * 60 * 1000);
//
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &val, sizeof(val));
//
if (connect(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr_in)) < 0) {
@ -152,8 +161,13 @@ int sam3tcpConnect(const char *hostname, int port, uint32_t *ip) {
// <0: error; 0: ok
int sam3tcpDisconnect(int fd) {
if (fd >= 0) {
#ifndef WINDOWS_SYS // ie UNIX
shutdown(fd, SHUT_RDWR);
return close(fd);
#else
return closesocket(fd);
#endif
}
//
return -1;