mirror of
https://github.com/bitcoin/bitcoin.git
synced 2024-11-20 02:25:40 +01:00
torcontrol improvements and fixes
- Force AUTHCOOKIE size to be 32 bytes: This provides protection against an attack where a process pretends to be Tor and uses the cookie authentication method to nab arbitrary files such as the wallet - torcontrol logging - fix cookie auth - add HASHEDPASSWORD auth, fix fd leak when fwrite() fails - better error reporting when cookie file is not ok - better init/shutdown flow - stop advertizing service when disconnected from tor control port - COOKIE->SAFECOOKIE auth
This commit is contained in:
Wladimir J. van der Laan
parent
2f796e5fe7
commit
09c1ae1c01
@ -160,6 +160,7 @@ void Interrupt(boost::thread_group& threadGroup)
|
||||
InterruptHTTPRPC();
|
||||
InterruptRPC();
|
||||
InterruptREST();
|
||||
InterruptTorControl();
|
||||
threadGroup.interrupt_all();
|
||||
}
|
||||
|
||||
@ -362,6 +363,7 @@ std::string HelpMessage(HelpMessageMode mode)
|
||||
strUsage += HelpMessageOpt("-seednode=<ip>", _("Connect to a node to retrieve peer addresses, and disconnect"));
|
||||
strUsage += HelpMessageOpt("-timeout=<n>", strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT));
|
||||
strUsage += HelpMessageOpt("-torcontrol=<ip>:<port>", strprintf(_("Tor control port to use if onion listening enabled (default: %s)"), DEFAULT_TOR_CONTROL));
|
||||
strUsage += HelpMessageOpt("-torpassword=<pass>", _("Tor control port password (default: empty)"));
|
||||
#ifdef USE_UPNP
|
||||
#if USE_UPNP
|
||||
strUsage += HelpMessageOpt("-upnp", _("Use UPnP to map the listening port (default: 1 when listening and no -proxy)"));
|
||||
|
||||
@ -263,6 +263,14 @@ bool AddLocal(const CNetAddr &addr, int nScore)
|
||||
return AddLocal(CService(addr, GetListenPort()), nScore);
|
||||
}
|
||||
|
||||
bool RemoveLocal(const CService& addr)
|
||||
{
|
||||
LOCK(cs_mapLocalHost);
|
||||
LogPrintf("RemoveLocal(%s)\n", addr.ToString());
|
||||
mapLocalHost.erase(addr);
|
||||
return true;
|
||||
}
|
||||
|
||||
/** Make a particular network entirely off-limits (no automatic connects to it) */
|
||||
void SetLimited(enum Network net, bool fLimited)
|
||||
{
|
||||
|
||||
@ -128,6 +128,7 @@ bool IsLimited(enum Network net);
|
||||
bool IsLimited(const CNetAddr& addr);
|
||||
bool AddLocal(const CService& addr, int nScore = LOCAL_NONE);
|
||||
bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE);
|
||||
bool RemoveLocal(const CService& addr);
|
||||
bool SeenLocal(const CService& addr);
|
||||
bool IsLocal(const CService& addr);
|
||||
bool GetLocal(CService &addr, const CNetAddr *paddrPeer = NULL);
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
#include "utilstrencodings.h"
|
||||
#include "net.h"
|
||||
#include "util.h"
|
||||
#include "init.h" // Just for ShutdownRequested
|
||||
#include "crypto/hmac_sha256.h"
|
||||
|
||||
#include <vector>
|
||||
#include <deque>
|
||||
@ -16,13 +16,33 @@
|
||||
#include <boost/algorithm/string/predicate.hpp>
|
||||
#include <boost/algorithm/string/split.hpp>
|
||||
#include <boost/algorithm/string/classification.hpp>
|
||||
#include <boost/algorithm/string/replace.hpp>
|
||||
|
||||
#include <event2/bufferevent.h>
|
||||
#include <event2/buffer.h>
|
||||
#include <event2/util.h>
|
||||
#include <event2/event.h>
|
||||
#include <event2/thread.h>
|
||||
|
||||
/** Default control port */
|
||||
const std::string DEFAULT_TOR_CONTROL = "127.0.0.1:9051";
|
||||
/** Tor cookie size (from control-spec.txt) */
|
||||
static const int TOR_COOKIE_SIZE = 32;
|
||||
/** Size of client/server nonce for SAFECOOKIE */
|
||||
static const int TOR_NONCE_SIZE = 32;
|
||||
/** For computing serverHash in SAFECOOKIE */
|
||||
static const std::string TOR_SAFE_SERVERKEY = "Tor safe cookie authentication server-to-controller hash";
|
||||
/** For computing clientHash in SAFECOOKIE */
|
||||
static const std::string TOR_SAFE_CLIENTKEY = "Tor safe cookie authentication controller-to-server hash";
|
||||
/** Exponential backoff configuration - initial timeout in seconds */
|
||||
static const float RECONNECT_TIMEOUT_START = 1.0;
|
||||
/** Exponential backoff configuration - growth factor */
|
||||
static const float RECONNECT_TIMEOUT_EXP = 1.5;
|
||||
/** Maximum length for lines received on TorControlConnection.
|
||||
* tor-control-spec.txt mentions that there is explicitly no limit defined to line length,
|
||||
* this is belt-and-suspenders sanity limit to prevent memory exhaustion.
|
||||
*/
|
||||
static const int MAX_LINE_LENGTH = 100000;
|
||||
|
||||
/****** Low-level TorControlConnection ********/
|
||||
|
||||
@ -123,7 +143,7 @@ void TorControlConnection::readcb(struct bufferevent *bev, void *ctx)
|
||||
if (s.size() < 4) // Short line
|
||||
continue;
|
||||
// <status>(-|+| )<data><CRLF>
|
||||
self->message.code = atoi(s.substr(0,3).c_str());
|
||||
self->message.code = atoi(s.substr(0,3));
|
||||
self->message.lines.push_back(s.substr(4));
|
||||
char ch = s[3]; // '-','+' or ' '
|
||||
if (ch == ' ') {
|
||||
@ -138,25 +158,32 @@ void TorControlConnection::readcb(struct bufferevent *bev, void *ctx)
|
||||
self->reply_handlers.front()(*self, self->message);
|
||||
self->reply_handlers.pop_front();
|
||||
} else {
|
||||
LogPrintf("[tor] Received unexpected sync reply %i\n", self->message.code);
|
||||
LogPrint("tor", "tor: Received unexpected sync reply %i\n", self->message.code);
|
||||
}
|
||||
}
|
||||
self->message.Clear();
|
||||
}
|
||||
}
|
||||
// Check for size of buffer - protect against memory exhaustion with very long lines
|
||||
// Do this after evbuffer_readln to make sure all full lines have been
|
||||
// removed from the buffer. Everything left is an incomplete line.
|
||||
if (evbuffer_get_length(input) > MAX_LINE_LENGTH) {
|
||||
LogPrintf("tor: Disconnecting because MAX_LINE_LENGTH exceeded\n");
|
||||
self->Disconnect();
|
||||
}
|
||||
}
|
||||
|
||||
void TorControlConnection::eventcb(struct bufferevent *bev, short what, void *ctx)
|
||||
{
|
||||
TorControlConnection *self = (TorControlConnection*)ctx;
|
||||
if (what & BEV_EVENT_CONNECTED) {
|
||||
LogPrintf("[tor] Succesfully connected!\n");
|
||||
LogPrint("tor", "tor: Succesfully connected!\n");
|
||||
self->connected(*self);
|
||||
} else if (what & (BEV_EVENT_EOF|BEV_EVENT_ERROR)) {
|
||||
if (what & BEV_EVENT_ERROR)
|
||||
LogPrintf("[tor] Error connecting to Tor control socket\n");
|
||||
LogPrint("tor", "tor: Error connecting to Tor control socket\n");
|
||||
else
|
||||
LogPrintf("[tor] End of stream\n");
|
||||
LogPrint("tor", "tor: End of stream\n");
|
||||
self->Disconnect();
|
||||
self->disconnected(*self);
|
||||
}
|
||||
@ -171,7 +198,7 @@ bool TorControlConnection::Connect(const std::string &target, const ConnectionCB
|
||||
int connect_to_addrlen = sizeof(connect_to_addr);
|
||||
if (evutil_parse_sockaddr_port(target.c_str(),
|
||||
(struct sockaddr*)&connect_to_addr, &connect_to_addrlen)<0) {
|
||||
perror("evutil_parse_sockaddr_port\n");
|
||||
LogPrintf("tor: Error parsing socket address %s\n", target);
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -186,7 +213,7 @@ bool TorControlConnection::Connect(const std::string &target, const ConnectionCB
|
||||
|
||||
// Finally, connect to target
|
||||
if (bufferevent_socket_connect(b_conn, (struct sockaddr*)&connect_to_addr, connect_to_addrlen) < 0) {
|
||||
perror("bufferevent_socket_connect");
|
||||
LogPrintf("tor: Error connecting to address %s\n", target);
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
@ -274,8 +301,14 @@ static std::map<std::string,std::string> ParseTorReplyMapping(const std::string
|
||||
return mapping;
|
||||
}
|
||||
|
||||
/** Read full contents of a file and return them in a std::string. */
|
||||
static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename)
|
||||
/** Read full contents of a file and return them in a std::string.
|
||||
* Returns a pair <status, string>.
|
||||
* If an error occured, status will be false, otherwise status will be true and the data will be returned in string.
|
||||
*
|
||||
* @param maxsize Puts a maximum size limit on the file that is read. If the file is larger than this, truncated data
|
||||
* (with len > maxsize) will be returned.
|
||||
*/
|
||||
static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename, size_t maxsize=std::numeric_limits<size_t>::max())
|
||||
{
|
||||
FILE *f = fopen(filename.c_str(), "rb");
|
||||
if (f == NULL)
|
||||
@ -283,8 +316,11 @@ static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename)
|
||||
std::string retval;
|
||||
char buffer[128];
|
||||
size_t n;
|
||||
while ((n=fread(buffer, 1, sizeof(buffer), f)) > 0)
|
||||
while ((n=fread(buffer, 1, sizeof(buffer), f)) > 0) {
|
||||
retval.append(buffer, buffer+n);
|
||||
if (retval.size() > maxsize)
|
||||
break;
|
||||
}
|
||||
fclose(f);
|
||||
return std::make_pair(true,retval);
|
||||
}
|
||||
@ -297,8 +333,10 @@ static bool WriteBinaryFile(const std::string &filename, const std::string &data
|
||||
FILE *f = fopen(filename.c_str(), "wb");
|
||||
if (f == NULL)
|
||||
return false;
|
||||
if (fwrite(data.data(), 1, data.size(), f) != data.size())
|
||||
if (fwrite(data.data(), 1, data.size(), f) != data.size()) {
|
||||
fclose(f);
|
||||
return false;
|
||||
}
|
||||
fclose(f);
|
||||
return true;
|
||||
}
|
||||
@ -326,14 +364,20 @@ private:
|
||||
std::string private_key;
|
||||
std::string service_id;
|
||||
bool reconnect;
|
||||
struct event *shutdown_poll_ev;
|
||||
struct event *reconnect_ev;
|
||||
float reconnect_timeout;
|
||||
CService service;
|
||||
/** Cooie for SAFECOOKIE auth */
|
||||
std::vector<uint8_t> cookie;
|
||||
/** ClientNonce for SAFECOOKIE auth */
|
||||
std::vector<uint8_t> clientNonce;
|
||||
|
||||
/** Callback for ADD_ONION result */
|
||||
void add_onion_cb(TorControlConnection& conn, const TorControlReply& reply);
|
||||
/** Callback for AUTHENTICATE result */
|
||||
void auth_cb(TorControlConnection& conn, const TorControlReply& reply);
|
||||
/** Callback for AUTHCHALLENGE result */
|
||||
void authchallenge_cb(TorControlConnection& conn, const TorControlReply& reply);
|
||||
/** Callback for PROTOCOLINFO result */
|
||||
void protocolinfo_cb(TorControlConnection& conn, const TorControlReply& reply);
|
||||
/** Callback after succesful connection */
|
||||
@ -341,55 +385,41 @@ private:
|
||||
/** Callback after connection lost or failed connection attempt */
|
||||
void disconnected_cb(TorControlConnection& conn);
|
||||
|
||||
/** Callback for shutdown poll timer */
|
||||
static void shutdown_poll_cb(evutil_socket_t fd, short what, void *arg);
|
||||
/** Callback for reconnect timer */
|
||||
static void reconnect_cb(evutil_socket_t fd, short what, void *arg);
|
||||
};
|
||||
|
||||
/** Exponential backoff configuration - initial timeout in seconds */
|
||||
static const float RECONNECT_TIMEOUT_START = 1.0;
|
||||
/** Exponential backoff configuration - growth factor */
|
||||
static const float RECONNECT_TIMEOUT_EXP = 1.5;
|
||||
|
||||
TorController::TorController(struct event_base* base, const std::string& target):
|
||||
base(base),
|
||||
target(target), conn(base), reconnect(true), shutdown_poll_ev(0), reconnect_ev(0),
|
||||
target(target), conn(base), reconnect(true), reconnect_ev(0),
|
||||
reconnect_timeout(RECONNECT_TIMEOUT_START)
|
||||
{
|
||||
// Start connection attempts immediately
|
||||
if (!conn.Connect(target, boost::bind(&TorController::connected_cb, this, _1),
|
||||
boost::bind(&TorController::disconnected_cb, this, _1) )) {
|
||||
LogPrintf("[tor] Initiating connection to Tor control port %s failed\n", target);
|
||||
LogPrintf("tor: Initiating connection to Tor control port %s failed\n", target);
|
||||
}
|
||||
// Read service private key if cached
|
||||
std::pair<bool,std::string> pkf = ReadBinaryFile(GetPrivateKeyFile());
|
||||
if (pkf.first) {
|
||||
LogPrintf("[tor] Reading cached private key from %s\n", GetPrivateKeyFile());
|
||||
LogPrint("tor", "tor: Reading cached private key from %s\n", GetPrivateKeyFile());
|
||||
private_key = pkf.second;
|
||||
}
|
||||
// Periodic timer event to poll for shutdown
|
||||
// The same 200ms as in bitcoind. This is not the nicest solution, but we cannot exactly use
|
||||
// boost::interrupt here.
|
||||
struct timeval time;
|
||||
time.tv_usec = 200000;
|
||||
time.tv_sec = 0;
|
||||
shutdown_poll_ev = event_new(base, -1, EV_PERSIST, shutdown_poll_cb, this);
|
||||
event_add(shutdown_poll_ev, &time);
|
||||
}
|
||||
|
||||
TorController::~TorController()
|
||||
{
|
||||
if (shutdown_poll_ev)
|
||||
event_del(shutdown_poll_ev);
|
||||
if (reconnect_ev)
|
||||
event_del(reconnect_ev);
|
||||
if (service.IsValid()) {
|
||||
RemoveLocal(service);
|
||||
}
|
||||
}
|
||||
|
||||
void TorController::add_onion_cb(TorControlConnection& conn, const TorControlReply& reply)
|
||||
{
|
||||
if (reply.code == 250) {
|
||||
LogPrintf("[tor] ADD_ONION succesful\n");
|
||||
LogPrint("tor", "tor: ADD_ONION succesful\n");
|
||||
BOOST_FOREACH(const std::string &s, reply.lines) {
|
||||
std::map<std::string,std::string> m = ParseTorReplyMapping(s);
|
||||
std::map<std::string,std::string>::iterator i;
|
||||
@ -399,26 +429,26 @@ void TorController::add_onion_cb(TorControlConnection& conn, const TorControlRep
|
||||
private_key = i->second;
|
||||
}
|
||||
|
||||
CService service(service_id+".onion", GetListenPort(), false);
|
||||
LogPrintf("[tor] Got service ID %s, advertizing service %s\n", service_id, service.ToString());
|
||||
service = CService(service_id+".onion", GetListenPort(), false);
|
||||
LogPrintf("tor: Got service ID %s, advertizing service %s\n", service_id, service.ToString());
|
||||
if (WriteBinaryFile(GetPrivateKeyFile(), private_key)) {
|
||||
LogPrintf("[tor] Cached service private key to %s\n", GetPrivateKeyFile());
|
||||
LogPrint("tor", "tor: Cached service private key to %s\n", GetPrivateKeyFile());
|
||||
} else {
|
||||
LogPrintf("[tor] Error writing service private key to %s\n", GetPrivateKeyFile());
|
||||
LogPrintf("tor: Error writing service private key to %s\n", GetPrivateKeyFile());
|
||||
}
|
||||
AddLocal(service, LOCAL_MANUAL);
|
||||
// ... onion requested - keep connection open
|
||||
} else if (reply.code == 510) { // 510 Unrecognized command
|
||||
LogPrintf("[tor] Add onion failed with unrecognized command (You probably need to upgrade Tor)\n");
|
||||
LogPrintf("tor: Add onion failed with unrecognized command (You probably need to upgrade Tor)\n");
|
||||
} else {
|
||||
LogPrintf("[tor] Add onion failed; error code %d\n", reply.code);
|
||||
LogPrintf("tor: Add onion failed; error code %d\n", reply.code);
|
||||
}
|
||||
}
|
||||
|
||||
void TorController::auth_cb(TorControlConnection& conn, const TorControlReply& reply)
|
||||
{
|
||||
if (reply.code == 250) {
|
||||
LogPrintf("[tor] Authentication succesful\n");
|
||||
LogPrint("tor", "tor: Authentication succesful\n");
|
||||
// Finally - now create the service
|
||||
if (private_key.empty()) // No private key, generate one
|
||||
private_key = "NEW:BEST";
|
||||
@ -428,7 +458,65 @@ void TorController::auth_cb(TorControlConnection& conn, const TorControlReply& r
|
||||
conn.Command(strprintf("ADD_ONION %s Port=%i,127.0.0.1:%i", private_key, GetListenPort(), GetListenPort()),
|
||||
boost::bind(&TorController::add_onion_cb, this, _1, _2));
|
||||
} else {
|
||||
LogPrintf("[tor] Authentication failed\n");
|
||||
LogPrintf("tor: Authentication failed\n");
|
||||
}
|
||||
}
|
||||
|
||||
/** Compute Tor SAFECOOKIE response.
|
||||
*
|
||||
* ServerHash is computed as:
|
||||
* HMAC-SHA256("Tor safe cookie authentication server-to-controller hash",
|
||||
* CookieString | ClientNonce | ServerNonce)
|
||||
* (with the HMAC key as its first argument)
|
||||
*
|
||||
* After a controller sends a successful AUTHCHALLENGE command, the
|
||||
* next command sent on the connection must be an AUTHENTICATE command,
|
||||
* and the only authentication string which that AUTHENTICATE command
|
||||
* will accept is:
|
||||
*
|
||||
* HMAC-SHA256("Tor safe cookie authentication controller-to-server hash",
|
||||
* CookieString | ClientNonce | ServerNonce)
|
||||
*
|
||||
*/
|
||||
static std::vector<uint8_t> ComputeResponse(const std::string &key, const std::vector<uint8_t> &cookie, const std::vector<uint8_t> &clientNonce, const std::vector<uint8_t> &serverNonce)
|
||||
{
|
||||
CHMAC_SHA256 computeHash((const uint8_t*)key.data(), key.size());
|
||||
std::vector<uint8_t> computedHash(CHMAC_SHA256::OUTPUT_SIZE, 0);
|
||||
computeHash.Write(begin_ptr(cookie), cookie.size());
|
||||
computeHash.Write(begin_ptr(clientNonce), clientNonce.size());
|
||||
computeHash.Write(begin_ptr(serverNonce), serverNonce.size());
|
||||
computeHash.Finalize(begin_ptr(computedHash));
|
||||
return computedHash;
|
||||
}
|
||||
|
||||
void TorController::authchallenge_cb(TorControlConnection& conn, const TorControlReply& reply)
|
||||
{
|
||||
if (reply.code == 250) {
|
||||
LogPrint("tor", "tor: SAFECOOKIE authentication challenge succesful\n");
|
||||
std::pair<std::string,std::string> l = SplitTorReplyLine(reply.lines[0]);
|
||||
if (l.first == "AUTHCHALLENGE") {
|
||||
std::map<std::string,std::string> m = ParseTorReplyMapping(l.second);
|
||||
std::vector<uint8_t> serverHash = ParseHex(m["SERVERHASH"]);
|
||||
std::vector<uint8_t> serverNonce = ParseHex(m["SERVERNONCE"]);
|
||||
LogPrint("tor", "tor: AUTHCHALLENGE ServerHash %s ServerNonce %s\n", HexStr(serverHash), HexStr(serverNonce));
|
||||
if (serverNonce.size() != 32) {
|
||||
LogPrintf("tor: ServerNonce is not 32 bytes, as required by spec\n");
|
||||
return;
|
||||
}
|
||||
|
||||
std::vector<uint8_t> computedServerHash = ComputeResponse(TOR_SAFE_SERVERKEY, cookie, clientNonce, serverNonce);
|
||||
if (computedServerHash != serverHash) {
|
||||
LogPrintf("tor: ServerHash %s does not match expected ServerHash %s\n", HexStr(serverHash), HexStr(computedServerHash));
|
||||
return;
|
||||
}
|
||||
|
||||
std::vector<uint8_t> computedClientHash = ComputeResponse(TOR_SAFE_CLIENTKEY, cookie, clientNonce, serverNonce);
|
||||
conn.Command("AUTHENTICATE " + HexStr(computedClientHash), boost::bind(&TorController::auth_cb, this, _1, _2));
|
||||
} else {
|
||||
LogPrintf("tor: Invalid reply to AUTHCHALLENGE\n");
|
||||
}
|
||||
} else {
|
||||
LogPrintf("tor: SAFECOOKIE authentication challenge failed\n");
|
||||
}
|
||||
}
|
||||
|
||||
@ -455,37 +543,52 @@ void TorController::protocolinfo_cb(TorControlConnection& conn, const TorControl
|
||||
std::map<std::string,std::string> m = ParseTorReplyMapping(l.second);
|
||||
std::map<std::string,std::string>::iterator i;
|
||||
if ((i = m.find("Tor")) != m.end()) {
|
||||
LogPrintf("[tor] Connected to Tor version %s\n", i->second);
|
||||
LogPrint("tor", "tor: Connected to Tor version %s\n", i->second);
|
||||
}
|
||||
}
|
||||
}
|
||||
BOOST_FOREACH(const std::string &s, methods) {
|
||||
LogPrintf("[tor] Supported authentication method: %s\n", s);
|
||||
LogPrint("tor", "tor: Supported authentication method: %s\n", s);
|
||||
}
|
||||
// Prefer NULL, otherwise COOKIE. If a password is provided, use HASHEDPASSWORD
|
||||
// We do not support SAFECOOKIE
|
||||
// Prefer NULL, otherwise SAFECOOKIE. If a password is provided, use HASHEDPASSWORD
|
||||
/* Authentication:
|
||||
* cookie: hex-encoded ~/.tor/control_auth_cookie
|
||||
* password: "password"
|
||||
*/
|
||||
std::string torpassword = GetArg("-torpassword", "");
|
||||
if (methods.count("NULL")) {
|
||||
LogPrintf("[tor] Using NULL authentication\n");
|
||||
LogPrint("tor", "tor: Using NULL authentication\n");
|
||||
conn.Command("AUTHENTICATE", boost::bind(&TorController::auth_cb, this, _1, _2));
|
||||
} else if (methods.count("COOKIE")) {
|
||||
} else if (methods.count("SAFECOOKIE")) {
|
||||
// Cookie: hexdump -e '32/1 "%02x""\n"' ~/.tor/control_auth_cookie
|
||||
LogPrintf("[tor] Using COOKIE authentication, reading cookie authentication from %s\n", cookiefile);
|
||||
std::string cookie = ReadBinaryFile(cookiefile).second;
|
||||
if (!cookie.empty()) {
|
||||
conn.Command("AUTHENTICATE " + HexStr(cookie), boost::bind(&TorController::auth_cb, this, _1, _2));
|
||||
LogPrint("tor", "tor: Using SAFECOOKIE authentication, reading cookie authentication from %s\n", cookiefile);
|
||||
std::pair<bool,std::string> status_cookie = ReadBinaryFile(cookiefile, TOR_COOKIE_SIZE);
|
||||
if (status_cookie.first && status_cookie.second.size() == TOR_COOKIE_SIZE) {
|
||||
// conn.Command("AUTHENTICATE " + HexStr(status_cookie.second), boost::bind(&TorController::auth_cb, this, _1, _2));
|
||||
cookie = std::vector<uint8_t>(status_cookie.second.begin(), status_cookie.second.end());
|
||||
clientNonce = std::vector<uint8_t>(TOR_NONCE_SIZE, 0);
|
||||
GetRandBytes(&clientNonce[0], TOR_NONCE_SIZE);
|
||||
conn.Command("AUTHCHALLENGE SAFECOOKIE " + HexStr(clientNonce), boost::bind(&TorController::authchallenge_cb, this, _1, _2));
|
||||
} else {
|
||||
LogPrintf("[tor] Authentication cookie not found\n");
|
||||
if (status_cookie.first) {
|
||||
LogPrintf("tor: Authentication cookie %s is not exactly %i bytes, as is required by the spec\n", cookiefile, TOR_COOKIE_SIZE);
|
||||
} else {
|
||||
LogPrintf("tor: Authentication cookie %s could not be opened (check permissions)\n", cookiefile);
|
||||
}
|
||||
}
|
||||
} else if (methods.count("HASHEDPASSWORD")) {
|
||||
if (!torpassword.empty()) {
|
||||
LogPrint("tor", "tor: Using HASHEDPASSWORD authentication\n");
|
||||
boost::replace_all(torpassword, "\"", "\\\"");
|
||||
conn.Command("AUTHENTICATE \"" + torpassword + "\"", boost::bind(&TorController::auth_cb, this, _1, _2));
|
||||
} else {
|
||||
LogPrintf("tor: Password authentication required, but no password provided with -torpassword\n");
|
||||
}
|
||||
} else {
|
||||
/* TODO HASHEDPASSWORD w/ manual auth */
|
||||
LogPrintf("[tor] No supported authentication method\n");
|
||||
LogPrintf("tor: No supported authentication method\n");
|
||||
}
|
||||
} else {
|
||||
LogPrintf("[tor] Requesting protocol info failed\n");
|
||||
LogPrintf("tor: Requesting protocol info failed\n");
|
||||
}
|
||||
}
|
||||
|
||||
@ -494,14 +597,18 @@ void TorController::connected_cb(TorControlConnection& conn)
|
||||
reconnect_timeout = RECONNECT_TIMEOUT_START;
|
||||
// First send a PROTOCOLINFO command to figure out what authentication is expected
|
||||
if (!conn.Command("PROTOCOLINFO 1", boost::bind(&TorController::protocolinfo_cb, this, _1, _2)))
|
||||
LogPrintf("[tor] Error sending initial protocolinfo command\n");
|
||||
LogPrintf("tor: Error sending initial protocolinfo command\n");
|
||||
}
|
||||
|
||||
void TorController::disconnected_cb(TorControlConnection& conn)
|
||||
{
|
||||
// Stop advertizing service when disconnected
|
||||
if (service.IsValid())
|
||||
RemoveLocal(service);
|
||||
service = CService();
|
||||
if (!reconnect)
|
||||
return;
|
||||
LogPrintf("[tor] Disconnected from Tor control port %s, trying to reconnect\n", target);
|
||||
LogPrintf("tor: Disconnected from Tor control port %s, trying to reconnect\n", target);
|
||||
// Single-shot timer for reconnect. Use exponential backoff.
|
||||
struct timeval time = MillisToTimeval(int64_t(reconnect_timeout * 1000.0));
|
||||
reconnect_ev = event_new(base, -1, 0, reconnect_cb, this);
|
||||
@ -516,7 +623,7 @@ void TorController::Reconnect()
|
||||
*/
|
||||
if (!conn.Connect(target, boost::bind(&TorController::connected_cb, this, _1),
|
||||
boost::bind(&TorController::disconnected_cb, this, _1) )) {
|
||||
LogPrintf("[tor] Re-initiating connection to Tor control port %s failed\n", target);
|
||||
LogPrintf("tor: Re-initiating connection to Tor control port %s failed\n", target);
|
||||
}
|
||||
}
|
||||
|
||||
@ -525,23 +632,6 @@ std::string TorController::GetPrivateKeyFile()
|
||||
return (GetDataDir() / "onion_private_key").string();
|
||||
}
|
||||
|
||||
void TorController::shutdown_poll_cb(evutil_socket_t fd, short what, void *arg)
|
||||
{
|
||||
TorController *self = (TorController*)arg;
|
||||
if (ShutdownRequested()) {
|
||||
// Shutdown was requested. Stop timers, and request control connection to terminate
|
||||
LogPrintf("[tor] Thread interrupt\n");
|
||||
if (self->shutdown_poll_ev)
|
||||
event_del(self->shutdown_poll_ev);
|
||||
self->shutdown_poll_ev = 0;
|
||||
if (self->reconnect_ev)
|
||||
event_del(self->reconnect_ev);
|
||||
self->reconnect_ev = 0;
|
||||
self->reconnect = false;
|
||||
self->conn.Disconnect();
|
||||
}
|
||||
}
|
||||
|
||||
void TorController::reconnect_cb(evutil_socket_t fd, short what, void *arg)
|
||||
{
|
||||
TorController *self = (TorController*)arg;
|
||||
@ -549,27 +639,47 @@ void TorController::reconnect_cb(evutil_socket_t fd, short what, void *arg)
|
||||
}
|
||||
|
||||
/****** Thread ********/
|
||||
struct event_base *base;
|
||||
boost::thread torControlThread;
|
||||
|
||||
static void TorControlThread()
|
||||
{
|
||||
struct event_base *base = event_base_new();
|
||||
if (!base) {
|
||||
LogPrintf("[tor] Unable to create event_base_new");
|
||||
return;
|
||||
}
|
||||
TorController ctrl(base, GetArg("-torcontrol", DEFAULT_TOR_CONTROL));
|
||||
|
||||
event_base_dispatch(base);
|
||||
event_base_free(base);
|
||||
}
|
||||
|
||||
void StartTorControl(boost::thread_group& threadGroup, CScheduler& scheduler)
|
||||
{
|
||||
threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "torcontrol", &TorControlThread));
|
||||
assert(!base);
|
||||
#ifdef WIN32
|
||||
evthread_use_windows_threads();
|
||||
#else
|
||||
evthread_use_pthreads();
|
||||
#endif
|
||||
base = event_base_new();
|
||||
if (!base) {
|
||||
LogPrintf("tor: Unable to create event_base\n");
|
||||
return;
|
||||
}
|
||||
|
||||
torControlThread = boost::thread(boost::bind(&TraceThread<void (*)()>, "torcontrol", &TorControlThread));
|
||||
}
|
||||
|
||||
void InterruptTorControl()
|
||||
{
|
||||
if (base) {
|
||||
LogPrintf("tor: Thread interrupt\n");
|
||||
event_base_loopbreak(base);
|
||||
}
|
||||
}
|
||||
|
||||
void StopTorControl()
|
||||
{
|
||||
/* Nothing to do actually. Everything is cleaned up when thread exits */
|
||||
if (base) {
|
||||
torControlThread.join();
|
||||
event_base_free(base);
|
||||
base = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -14,6 +14,7 @@ extern const std::string DEFAULT_TOR_CONTROL;
|
||||
static const bool DEFAULT_LISTEN_ONION = true;
|
||||
|
||||
void StartTorControl(boost::thread_group& threadGroup, CScheduler& scheduler);
|
||||
void InterruptTorControl();
|
||||
void StopTorControl();
|
||||
|
||||
#endif /* BITCOIN_TORCONTROL_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user