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/*-
* Copyright (c) 2009, Moxie Marlinspike
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of this program nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "TorScanner.h"
#include <cstdlib>
using namespace boost::asio;
TorScanner::TorScanner(boost::asio::io_service &io_service,
std::string &destinationHost,
std::string &destinationPort,
std::string &request)
: io_service(io_service), destinationHost(destinationHost),
destinationPort(atoi(destinationPort.c_str())), request(request)
{}
void TorScanner::readComplete(TorTunnel *tunnel,
boost::shared_ptr<TorTunnelStream> stream,
unsigned char *buf, std::size_t transferred)
{
if (transferred == -1) {
tunnel->close();
delete tunnel;
return;
}
std::string response((const char*)buf, transferred);
std::cout << "Read from (" << stream->getRemoteNodeAddress() << "):"
<< std::endl << response << std::endl;
stream->read(boost::bind(&TorScanner::readComplete, this, tunnel, stream, _1, _2));
}
void TorScanner::requestSent(TorTunnel *tunnel,
boost::shared_ptr<TorTunnelStream> stream,
unsigned char *buf,
const boost::system::error_code &err)
{
free(buf);
if (err) {
delete tunnel;
std::cout << "Error sending request: " << err << std::endl;
return;
}
stream->read(boost::bind(&TorScanner::readComplete, this, tunnel, stream, _1, _2));
}
void TorScanner::tunnelStreamOpen(TorTunnel *tunnel,
boost::shared_ptr<TorTunnelStream> stream,
const boost::system::error_code &err)
{
if (err) {
std::cout << "Error opening stream: " << err << " " << &(tunnel->nodeConnection) << std::endl;
tunnel->close();
delete tunnel;
return;
}
std::cerr << "Connected to: " << stream->getRemoteNodeAddress() << std::endl;
std::string fullRequest("GET ");
fullRequest.append(request);
fullRequest.append(" HTTP/1.0\r\nConnection:close\r\n\r\n");
unsigned char *buf = (unsigned char*)malloc(fullRequest.size());
memcpy(buf, fullRequest.c_str(), fullRequest.size());
stream->write(buf, fullRequest.size(), boost::bind(&TorScanner::requestSent, this,
tunnel, stream, buf, placeholders::error));
}
void TorScanner::tunnelConnectionComplete(TorTunnel *tunnel,
const boost::system::error_code &err)
{
if (err) {
delete tunnel;
std::cout << "Error connecting: " << err << " " << &(tunnel->nodeConnection) << std::endl;
return;
}
tunnel->openStream(destinationHost, destinationPort, boost::bind(&TorScanner::tunnelStreamOpen,
this, tunnel, _1, _2));
}
void TorScanner::torTunnelError(const boost::system::error_code &err) {
std::cerr << "Error with tor tunnel: " << err << std::endl;
}
void TorScanner::serverDescriptorsComplete(boost::shared_ptr<ServerListingGroup> group,
const boost::system::error_code &err)
{
if (err) {
std::cerr << "Error retrieving Exit Node descriptors: " << err << std::endl;
return;
}
ServerListingIterator iterator(*group);
boost::shared_ptr<ServerListing> exitNode;
while ((exitNode = iterator.next()) != NULL) {
TorTunnel *tunnel = new TorTunnel(io_service, exitNode,
boost::bind(&TorScanner::torTunnelError, this,
placeholders::error));
tunnel->connect(boost::bind(&TorScanner::tunnelConnectionComplete, this,
tunnel, placeholders::error));
}
}
void TorScanner::directoryListingComplete(Directory *directory,
const boost::system::error_code &err)
{
if (err) {
std::cerr << "Error retrieving directory listing: " << err << std::endl;
return;
}
ExitNodeIterator iterator(*directory);
boost::shared_ptr<ServerListing> exitNode = iterator.next();
while (exitNode != NULL) {
std::list<std::string> identityList;
int count = 0;
while (exitNode != NULL) {
char *identity = exitNode->getBase16EncodedIdentity();
std::string identityStr(identity);
identityList.push_back(identityStr);
free(identity);
std::cerr << "Added: " << identityStr << std::endl;
exitNode = iterator.next();
if (count++ == 50)
break;
}
boost::shared_ptr<ServerListingGroup> group(new ServerListingGroup(io_service,
identityList));
group->retrieveGroupList(boost::bind(&TorScanner::serverDescriptorsComplete, this,
group, placeholders::error));
}
delete directory;
}
void TorScanner::scan() {
Directory *directory = new Directory(io_service);
directory->retrieveDirectoryListing(boost::bind(&TorScanner::directoryListingComplete,
this, directory, placeholders::error));
}
int main(int argc, char** argv) {
std::string destinationHost(argv[1]);
std::string destinationPort(argv[2]);
std::string request(argv[3]);
boost::asio::io_service io_service;
TorScanner scanner(io_service, destinationHost, destinationPort, request);
scanner.scan();
io_service::work work(io_service);
io_service.run();
}
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