| File: | rootdir/src/Proxy.cpp |
| Warning: | line 1138, column 4 This statement is never executed |
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| 1 | // |
| 2 | // This file is part of the aMule Project. |
| 3 | // |
| 4 | // Copyright (c) 2004-2011 aMule Team ( admin@amule.org / http://www.amule.org ) |
| 5 | // Copyright (c) 2004-2011 Marcelo Roberto Jimenez ( phoenix@amule.org ) |
| 6 | // |
| 7 | // Any parts of this program derived from the xMule, lMule or eMule project, |
| 8 | // or contributed by third-party developers are copyrighted by their |
| 9 | // respective authors. |
| 10 | // |
| 11 | // This program is free software; you can redistribute it and/or modify |
| 12 | // it under the terms of the GNU General Public License as published by |
| 13 | // the Free Software Foundation; either version 2 of the License, or |
| 14 | // (at your option) any later version. |
| 15 | // |
| 16 | // This program is distributed in the hope that it will be useful, |
| 17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | // GNU General Public License for more details. |
| 20 | // |
| 21 | // You should have received a copy of the GNU General Public License |
| 22 | // along with this program; if not, write to the Free Software |
| 23 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| 24 | // |
| 25 | |
| 26 | #include "Proxy.h" /* for Interface */ |
| 27 | |
| 28 | #include <common/EventIDs.h> |
| 29 | |
| 30 | #include "ArchSpecific.h" /* for ENDIAN_HTONS() */ |
| 31 | #include "Logger.h" /* for AddDebugLogLineN */ |
| 32 | #include "OtherFunctions.h" /* for EncodeBase64() */ |
| 33 | #include <common/StringFunctions.h> /* for unicode2char */ |
| 34 | #include "GuiEvents.h" |
| 35 | |
| 36 | // Define it to 1 to debug proxy communication and state machine design. If |
| 37 | // enabled messages sent to and received from proxies will be dumped to stdout. |
| 38 | // Has effect only in debug-enabled builds. |
| 39 | #ifndef DEBUG_DUMP_PROXY_MSG0 |
| 40 | #define DEBUG_DUMP_PROXY_MSG0 0 |
| 41 | #endif |
| 42 | |
| 43 | |
| 44 | //------------------------------------------------------------------------------ |
| 45 | // CProxyData |
| 46 | //------------------------------------------------------------------------------ |
| 47 | |
| 48 | CProxyData::CProxyData() |
| 49 | { |
| 50 | Clear(); |
| 51 | } |
| 52 | |
| 53 | CProxyData::CProxyData( |
| 54 | bool proxyEnable, |
| 55 | CProxyType proxyType, |
| 56 | const wxString &proxyHostName, |
| 57 | unsigned short proxyPort, |
| 58 | bool enablePassword, |
| 59 | const wxString &userName, |
| 60 | const wxString &password) |
| 61 | : |
| 62 | m_proxyEnable(proxyEnable), |
| 63 | m_proxyType(proxyType), |
| 64 | m_proxyHostName(proxyHostName), |
| 65 | m_proxyPort(proxyPort), |
| 66 | m_enablePassword(enablePassword), |
| 67 | m_userName(userName), |
| 68 | m_password(password) |
| 69 | { |
| 70 | } |
| 71 | |
| 72 | void CProxyData::Clear() |
| 73 | { |
| 74 | m_proxyEnable = false; |
| 75 | m_proxyType = PROXY_NONE; |
| 76 | m_proxyHostName.Clear(); |
| 77 | m_proxyPort = 0; |
| 78 | m_enablePassword = false; |
| 79 | m_userName.Clear(); |
| 80 | m_password.Clear(); |
| 81 | } |
| 82 | |
| 83 | #ifndef CLIENT_GUI |
| 84 | |
| 85 | #include <typeinfo> // Do_not_auto_remove (NetBSD, older gccs) |
| 86 | |
| 87 | #ifndef ASIO_SOCKETS1 |
| 88 | |
| 89 | //------------------------------------------------------------------------------ |
| 90 | // ProxyEventHandler |
| 91 | //------------------------------------------------------------------------------ |
| 92 | |
| 93 | CProxyEventHandler::CProxyEventHandler() |
| 94 | { |
| 95 | } |
| 96 | |
| 97 | BEGIN_EVENT_TABLE(CProxyEventHandler, wxEvtHandler)const wxEventTable CProxyEventHandler::sm_eventTable = { & wxEvtHandler::sm_eventTable, &CProxyEventHandler::sm_eventTableEntries [0] }; const wxEventTable *CProxyEventHandler::GetEventTable( ) const { return &CProxyEventHandler::sm_eventTable; } wxEventHashTable CProxyEventHandler::sm_eventHashTable(CProxyEventHandler::sm_eventTable ); wxEventHashTable &CProxyEventHandler::GetEventHashTable () const { return CProxyEventHandler::sm_eventHashTable; } const wxEventTableEntry CProxyEventHandler::sm_eventTableEntries[] = { |
| 98 | EVT_SOCKET(ID_PROXY_SOCKET_EVENT, CProxyEventHandler::ProxySocketHandler) |
| 99 | END_EVENT_TABLE()wxEventTableEntry(wxEVT_NULL, 0, 0, __null, __null) }; |
| 100 | |
| 101 | // |
| 102 | // THE one and only Event Handler |
| 103 | // |
| 104 | static CProxyEventHandler g_proxyEventHandler; |
| 105 | |
| 106 | void CProxyEventHandler::ProxySocketHandler(wxSocketEvent& event) |
| 107 | { |
| 108 | CProxySocket *sock = dynamic_cast<CProxySocket *>(event.GetSocket()); |
| 109 | if (sock) { |
| 110 | sock->m_proxyStateMachine->Schedule(event.GetSocketEvent()); |
| 111 | sock->m_proxyStateMachine->Clock(); |
| 112 | } else { |
| 113 | // we're doomed :) |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | #else |
| 118 | |
| 119 | // |
| 120 | // In Asio mode the event handler is: |
| 121 | // |
| 122 | void CProxySocket::OnProxyEvent(int evt) |
| 123 | { |
| 124 | m_proxyStateMachine->Schedule(evt); |
| 125 | m_proxyStateMachine->Clock(); |
| 126 | } |
| 127 | |
| 128 | #endif |
| 129 | |
| 130 | //------------------------------------------------------------------------------ |
| 131 | // CProxyStateMachine |
| 132 | //------------------------------------------------------------------------------ |
| 133 | |
| 134 | CProxyStateMachine::CProxyStateMachine( |
| 135 | wxString name, |
| 136 | const unsigned int max_states, |
| 137 | const CProxyData &proxyData, |
| 138 | CProxyCommand proxyCommand) |
| 139 | : |
| 140 | CStateMachine(NewName(name, proxyCommand), max_states, PROXY_STATE_START), |
| 141 | m_proxyData(proxyData), |
| 142 | m_proxyCommand(proxyCommand), |
| 143 | m_isLost(false), |
| 144 | m_isConnected(false), |
| 145 | m_canReceive(false), |
| 146 | m_canSend(false), |
| 147 | m_ok(true), |
| 148 | m_lastRead(0), |
| 149 | // Will be initialized at Start() |
| 150 | m_peerAddress(NULL__null), |
| 151 | m_proxyClientSocket(NULL__null), |
| 152 | m_proxyBoundAddress(NULL__null), |
| 153 | // Temporary variables |
| 154 | m_lastReply(0), |
| 155 | m_packetLenght(0) |
| 156 | { |
| 157 | } |
| 158 | |
| 159 | CProxyStateMachine::~CProxyStateMachine() |
| 160 | { |
| 161 | delete m_peerAddress; |
| 162 | } |
| 163 | |
| 164 | wxString &CProxyStateMachine::NewName(wxString &s, CProxyCommand proxyCommand) |
| 165 | { |
| 166 | switch (proxyCommand) { |
| 167 | case PROXY_CMD_CONNECT: |
| 168 | s += wxT("-CONNECT")L"-CONNECT"; |
| 169 | break; |
| 170 | |
| 171 | case PROXY_CMD_BIND: |
| 172 | s += wxT("-BIND")L"-BIND"; |
| 173 | break; |
| 174 | |
| 175 | case PROXY_CMD_UDP_ASSOCIATE: |
| 176 | s += wxT("-UDP")L"-UDP"; |
| 177 | break; |
| 178 | } |
| 179 | |
| 180 | return s; |
| 181 | } |
| 182 | |
| 183 | bool CProxyStateMachine::Start(const amuleIPV4Address &peerAddress, CLibSocket *proxyClientSocket) |
| 184 | { |
| 185 | m_proxyClientSocket = proxyClientSocket; |
| 186 | m_peerAddress = new amuleIPV4Address(peerAddress); |
| 187 | //try { |
| 188 | // const wxIPV4address &peer = dynamic_cast<const wxIPV4address &>(peerAddress); |
| 189 | // m_peerAddress = new amuleIPV4Address(peer); |
| 190 | //} catch (const std::bad_cast& WXUNUSED(e)) { |
| 191 | // // Should process other types of wxIPAddress before quitting |
| 192 | // AddDebugLogLineN(logProxy, wxT("(1)bad_cast exception!")); |
| 193 | // wxFAIL; |
| 194 | // return false; |
| 195 | //} |
| 196 | |
| 197 | // To run the state machine, return and just let the events start to happen. |
| 198 | return true; |
| 199 | } |
| 200 | |
| 201 | static const int MULE_SOCKET_DUMMY_VALUE = MULE_SOCKET_INPUT + MULE_SOCKET_OUTPUT + MULE_SOCKET_CONNECTION + MULE_SOCKET_LOST; |
| 202 | |
| 203 | t_sm_state CProxyStateMachine::HandleEvent(t_sm_event event) |
| 204 | { |
| 205 | // Default is stay in current state |
| 206 | t_sm_state ret = GetState(); |
| 207 | switch(event) |
| 208 | { |
| 209 | case MULE_SOCKET_CONNECTION: |
| 210 | AddDebugLogLineN(logProxy, wxT("Connection event"))do {} while (false); |
| 211 | m_isConnected = true; |
| 212 | break; |
| 213 | |
| 214 | case MULE_SOCKET_INPUT: |
| 215 | AddDebugLogLineN(logProxy, wxT("Input event"))do {} while (false); |
| 216 | m_canReceive = true; |
| 217 | break; |
| 218 | |
| 219 | case MULE_SOCKET_OUTPUT: |
| 220 | AddDebugLogLineN(logProxy, wxT("Output event"))do {} while (false); |
| 221 | m_canSend = true; |
| 222 | break; |
| 223 | |
| 224 | case MULE_SOCKET_LOST: |
| 225 | AddDebugLogLineN(logProxy, wxT("Lost connection event"))do {} while (false); |
| 226 | m_isLost = true; |
| 227 | m_ok = false; |
| 228 | break; |
| 229 | |
| 230 | case MULE_SOCKET_DUMMY_VALUE: |
| 231 | AddDebugLogLineN(logProxy, wxT("Dummy event"))do {} while (false); |
| 232 | break; |
| 233 | |
| 234 | default: |
| 235 | AddDebugLogLineN(logProxy, CFormat(wxT("Unknown event %d")) % event)do {} while (false); |
| 236 | break; |
| 237 | } |
| 238 | |
| 239 | // Aborting conditions: |
| 240 | // - MULE_SOCKET_LOST event |
| 241 | // - More than 10 times on the same state |
| 242 | if ( m_isLost || |
| 243 | GetClocksInCurrentState() > 10) { |
| 244 | ret = PROXY_STATE_END; |
| 245 | } |
| 246 | |
| 247 | return ret; |
| 248 | } |
| 249 | |
| 250 | void CProxyStateMachine::AddDummyEvent() |
| 251 | { |
| 252 | #ifdef ASIO_SOCKETS1 |
| 253 | CProxySocket *s = dynamic_cast<CProxySocket *>(m_proxyClientSocket); |
| 254 | if (s) { // should always be |
| 255 | CoreNotify_ProxySocketEvent(s, MULE_SOCKET_DUMMY_VALUE)MuleNotify::DoNotifyAlways(&MuleNotify::ProxySocketEvent, s, MULE_SOCKET_DUMMY_VALUE); |
| 256 | } |
| 257 | #else |
| 258 | wxSocketEvent e(ID_PROXY_SOCKET_EVENT); |
| 259 | // Make sure this is an unknown event :) |
| 260 | e.m_event = (wxSocketNotify)(MULE_SOCKET_DUMMY_VALUE); |
| 261 | e.SetEventObject(m_proxyClientSocket); |
| 262 | g_proxyEventHandler.AddPendingEvent(e); |
| 263 | #endif |
| 264 | } |
| 265 | |
| 266 | void CProxyStateMachine::ReactivateSocket() |
| 267 | { |
| 268 | /* If proxy is being used, then the TCP socket handlers |
| 269 | * (CServerSocketHandler and CClientTCPSocketHandler) will not |
| 270 | * receive a wxSOCKET_CONNECTION event, because the connection has |
| 271 | * already started with the proxy. So we must add a wxSOCKET_CONNECTION |
| 272 | * event to make things go undetected. A wxSOCKET_OUTPUT event is also |
| 273 | * necessary to start sending data to the server. */ |
| 274 | CProxySocket *s = dynamic_cast<CProxySocket *>(m_proxyClientSocket); |
| 275 | // If that is not true, we are in serious trouble... |
| 276 | wxASSERT(s)do { if ( s ) { } else if ( wxTheAssertHandler && (wxOnAssert ("Proxy.cpp", 276, __FUNCTION__, "s", (const char*)__null), wxTrapInAssert ) ) { wxTrapInAssert = false; asm volatile ("int $3"); } } while ( (void)0, 0 ); |
| 277 | if (CDatagramSocketProxy *udp = s->GetUDPSocket()) { |
| 278 | // The original socket was a UDP socket |
| 279 | if(m_ok) { |
| 280 | // From now on, the UDP socket can be used, |
| 281 | // remove the protection. |
| 282 | udp->SetUDPSocketOk(); |
| 283 | } |
| 284 | // No need to call RestoreState(), that socket will no longer |
| 285 | // be used after proxy negotiation. |
| 286 | } else { |
| 287 | // The original socket was a TCP socket |
| 288 | #ifdef ASIO_SOCKETS1 |
| 289 | if (s->GetProxyState()) { // somehow this gets called twice ? |
| 290 | s->SetProxyState(false); |
| 291 | CoreNotify_LibSocketConnect(s, 0)MuleNotify::DoNotifyAlways(&MuleNotify::LibSocketConnect, s, 0); |
| 292 | if (m_ok) { |
| 293 | CoreNotify_LibSocketSend(s, 0)MuleNotify::DoNotifyAlways(&MuleNotify::LibSocketSend, s, 0); |
| 294 | } else { |
| 295 | CoreNotify_LibSocketLost(s)MuleNotify::DoNotifyAlways(&MuleNotify::LibSocketLost, s); |
| 296 | } |
| 297 | } |
| 298 | #else |
| 299 | s->RestoreEventHandler(); |
| 300 | wxSocketEvent e(s->GetEventHandlerId()); |
| 301 | e.m_event = wxSOCKET_CONNECTION; |
| 302 | e.SetEventObject(s); |
| 303 | wxEvtHandler *h(s->GetEventHandler()); |
| 304 | h->AddPendingEvent(e); |
| 305 | e.m_event = wxSOCKET_OUTPUT; |
| 306 | h->AddPendingEvent(e); |
| 307 | if (!m_ok) { |
| 308 | e.m_event = wxSOCKET_LOST; |
| 309 | h->AddPendingEvent(e); |
| 310 | } |
| 311 | s->RestoreState(); |
| 312 | #endif |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | uint32 CProxyStateMachine::ProxyWrite(CLibSocket &socket, const void *buffer, wxUint32 nbytes) |
| 317 | { |
| 318 | uint32 written = socket.Write(buffer, nbytes); |
| 319 | /* Set the status of this operation */ |
| 320 | m_ok = true; |
| 321 | if (m_proxyClientSocket->BlocksWrite()) { |
| 322 | m_lastError = 0; |
| 323 | m_canSend = false; |
| 324 | } else if ((m_lastError = m_proxyClientSocket->LastError()) != 0) { |
| 325 | m_ok = false; |
| 326 | } |
| 327 | AddDebugLogLineN(logProxy, CFormat(wxT("ProxyWrite %d %d ok %d cansend %d")) % nbytes % written % m_ok % m_canSend)do {} while (false); |
| 328 | |
| 329 | return written; |
| 330 | } |
| 331 | |
| 332 | uint32 CProxyStateMachine::ProxyRead(CLibSocket &socket, void *buffer) |
| 333 | { |
| 334 | /* Always try to read the full buffer. That explicitly demands that |
| 335 | * the socket has the flag wxSOCKET_NONE. */ |
| 336 | m_lastRead = socket.Read(buffer, PROXY_BUFFER_SIZE); |
| 337 | /* Set the status of this operation */ |
| 338 | m_ok = true; |
| 339 | if (m_proxyClientSocket->BlocksRead()) { |
| 340 | m_lastError = 0; |
| 341 | #ifndef ASIO_SOCKETS1 // m_canReceive is already assigned later |
| 342 | m_canReceive = false; |
| 343 | #endif |
| 344 | } else if ((m_lastError = m_proxyClientSocket->LastError()) != 0) { |
| 345 | m_ok = false; |
| 346 | } |
| 347 | #ifdef ASIO_SOCKETS1 |
| 348 | // We will get a new event right away if data is left, or when new data gets available. |
| 349 | // So block for now. |
| 350 | m_canReceive = false; |
| 351 | #endif |
| 352 | AddDebugLogLineN(logProxy, CFormat(wxT("ProxyRead %d ok %d canrec %d")) % m_lastRead % m_ok % m_canReceive)do {} while (false); |
| 353 | |
| 354 | return m_lastRead; |
| 355 | } |
| 356 | |
| 357 | bool CProxyStateMachine::CanReceive() const |
| 358 | { |
| 359 | return m_canReceive; |
| 360 | } |
| 361 | |
| 362 | bool CProxyStateMachine::CanSend() const |
| 363 | { |
| 364 | return m_canSend; |
| 365 | } |
| 366 | |
| 367 | //------------------------------------------------------------------------------ |
| 368 | // CSocks5StateMachine |
| 369 | //------------------------------------------------------------------------------ |
| 370 | |
| 371 | /** |
| 372 | * The state machine constructor must initialize the array of pointer to member |
| 373 | * functions. Don't waste you time trying to statically initialize this, pointer |
| 374 | * to member functions require an object to operate on, so this array must be |
| 375 | * initialized at run time. |
| 376 | */ |
| 377 | CSocks5StateMachine::CSocks5StateMachine( |
| 378 | const CProxyData &proxyData, |
| 379 | CProxyCommand proxyCommand) |
| 380 | : |
| 381 | CProxyStateMachine( |
| 382 | wxString(wxT("Socks5")L"Socks5"), SOCKS5_MAX_STATES, proxyData, proxyCommand) |
| 383 | { |
| 384 | m_process_state[ 0] = &CSocks5StateMachine::process_start; |
| 385 | m_state_name[ 0] = wxT("process_start")L"process_start"; |
| 386 | m_process_state[ 1] = &CSocks5StateMachine::process_end; |
| 387 | m_state_name[ 1] = wxT("process_end")L"process_end"; |
| 388 | m_process_state[ 2] = &CSocks5StateMachine::process_send_query_authentication_method; |
| 389 | m_state_name[ 2] = wxT("process_send_query_authentication_method")L"process_send_query_authentication_method"; |
| 390 | m_process_state[ 3] = &CSocks5StateMachine::process_receive_authentication_method; |
| 391 | m_state_name[ 3] = wxT("process_receive_authentication_method")L"process_receive_authentication_method"; |
| 392 | m_process_state[ 4] = &CSocks5StateMachine::process_process_authentication_method; |
| 393 | m_state_name[ 4] = wxT("process_process_authentication_method")L"process_process_authentication_method"; |
| 394 | m_process_state[ 5] = &CSocks5StateMachine::process_send_authentication_gssapi; |
| 395 | m_state_name[ 5] = wxT("process_send_authentication_gssapi")L"process_send_authentication_gssapi"; |
| 396 | m_process_state[ 6] = &CSocks5StateMachine::process_receive_authentication_gssapi; |
| 397 | m_state_name[ 6] = wxT("process_receive_authentication_gssapi")L"process_receive_authentication_gssapi"; |
| 398 | m_process_state[ 7] = &CSocks5StateMachine::process_process_authentication_gssapi; |
| 399 | m_state_name[ 7] = wxT("process_process_authentication_gssapi")L"process_process_authentication_gssapi"; |
| 400 | m_process_state[ 8] = &CSocks5StateMachine::process_send_authentication_username_password; |
| 401 | m_state_name[ 8] = wxT("process_send_authentication_username_password")L"process_send_authentication_username_password"; |
| 402 | m_process_state[ 9] = &CSocks5StateMachine::process_receive_authentication_username_password; |
| 403 | m_state_name[ 9] = wxT("process_receive_authentication_username_password")L"process_receive_authentication_username_password"; |
| 404 | m_process_state[10] = &CSocks5StateMachine::process_process_authentication_username_password; |
| 405 | m_state_name[10] = wxT("process_process_authentication_username_password")L"process_process_authentication_username_password"; |
| 406 | m_process_state[11] = &CSocks5StateMachine::process_send_command_request; |
| 407 | m_state_name[11] = wxT("process_send_command_request")L"process_send_command_request"; |
| 408 | m_process_state[12] = &CSocks5StateMachine::process_receive_command_reply; |
| 409 | m_state_name[12] = wxT("process_receive_command_reply")L"process_receive_command_reply"; |
| 410 | m_process_state[13] = &CSocks5StateMachine::process_process_command_reply; |
| 411 | m_state_name[13] = wxT("process_process_command_reply")L"process_process_command_reply"; |
| 412 | } |
| 413 | |
| 414 | void CSocks5StateMachine::process_state(t_sm_state state, bool entry) |
| 415 | { |
| 416 | /* Ok, the syntax is terrible, but this is correct. This is a |
| 417 | * pointer to a member function. No C equivalent for that. */ |
| 418 | (this->*m_process_state[state])(entry); |
| 419 | |
| 420 | #ifdef __DEBUG__ |
| 421 | #if DEBUG_DUMP_PROXY_MSG0 |
| 422 | int n = 0; |
| 423 | |
| 424 | switch (state) { |
| 425 | case SOCKS5_STATE_START: |
| 426 | case SOCKS5_STATE_END: |
| 427 | case SOCKS5_STATE_RECEIVE_AUTHENTICATION_METHOD: |
| 428 | case SOCKS5_STATE_RECEIVE_AUTHENTICATION_GSSAPI: |
| 429 | case SOCKS5_STATE_RECEIVE_AUTHENTICATION_USERNAME_PASSWORD: |
| 430 | case SOCKS5_STATE_RECEIVE_COMMAND_REPLY: |
| 431 | default: |
| 432 | n = 0; |
| 433 | break; |
| 434 | |
| 435 | case SOCKS5_STATE_SEND_QUERY_AUTHENTICATION_METHOD: |
| 436 | case SOCKS5_STATE_SEND_AUTHENTICATION_GSSAPI: |
| 437 | case SOCKS5_STATE_SEND_AUTHENTICATION_USERNAME_PASSWORD: |
| 438 | case SOCKS5_STATE_SEND_COMMAND_REQUEST: |
| 439 | n = m_packetLenght; |
| 440 | break; |
| 441 | |
| 442 | case SOCKS5_STATE_PROCESS_AUTHENTICATION_METHOD: |
| 443 | case SOCKS5_STATE_PROCESS_AUTHENTICATION_GSSAPI: |
| 444 | case SOCKS5_STATE_PROCESS_AUTHENTICATION_USERNAME_PASSWORD: |
| 445 | case SOCKS5_STATE_PROCESS_COMMAND_REPLY: |
| 446 | n = m_lastRead; |
| 447 | break; |
| 448 | } |
| 449 | |
| 450 | if (entry) { |
| 451 | DumpMem(m_buffer, n, m_state_name[state], m_ok); |
| 452 | } |
| 453 | #endif |
| 454 | AddDebugLogLineN(logProxy, CFormat(wxString(wxT("state: %s clocks: %u"))) % m_state_name[state] % GetClocksInCurrentState())do {} while (false); |
| 455 | #endif // __DEBUG__ |
| 456 | } |
| 457 | |
| 458 | /** |
| 459 | * Code this such that the next state is only entered when it is able to |
| 460 | * perform the operation (read or write). State processing will assume |
| 461 | * that it can read or write upon entry of the state. This is done using |
| 462 | * CanSend() and CanReceive(). |
| 463 | */ |
| 464 | t_sm_state CSocks5StateMachine::next_state(t_sm_event event) |
| 465 | { |
| 466 | // Default is stay in current state |
| 467 | t_sm_state ret = HandleEvent(event); |
| 468 | switch (GetState()) { |
| 469 | case SOCKS5_STATE_START: |
| 470 | if (m_isConnected && !m_isLost && CanSend()) { |
| 471 | ret = SOCKS5_STATE_SEND_QUERY_AUTHENTICATION_METHOD; |
| 472 | } |
| 473 | break; |
| 474 | |
| 475 | case SOCKS5_STATE_SEND_QUERY_AUTHENTICATION_METHOD: |
| 476 | if (CanReceive()) { |
| 477 | ret = SOCKS5_STATE_RECEIVE_AUTHENTICATION_METHOD; |
| 478 | } |
| 479 | break; |
| 480 | |
| 481 | case SOCKS5_STATE_RECEIVE_AUTHENTICATION_METHOD: |
| 482 | ret = SOCKS5_STATE_PROCESS_AUTHENTICATION_METHOD; |
| 483 | break; |
| 484 | |
| 485 | case SOCKS5_STATE_PROCESS_AUTHENTICATION_METHOD: |
| 486 | if (m_ok) { |
| 487 | if (CanSend()) { |
| 488 | switch (m_lastReply) { |
| 489 | case SOCKS5_AUTH_METHOD_NO_AUTH_REQUIRED: |
| 490 | ret = SOCKS5_STATE_SEND_COMMAND_REQUEST; |
| 491 | break; |
| 492 | |
| 493 | case SOCKS5_AUTH_METHOD_GSSAPI: |
| 494 | ret = SOCKS5_STATE_SEND_AUTHENTICATION_GSSAPI; |
| 495 | break; |
| 496 | |
| 497 | case SOCKS5_AUTH_METHOD_USERNAME_PASSWORD: |
| 498 | ret = SOCKS5_STATE_SEND_AUTHENTICATION_USERNAME_PASSWORD; |
| 499 | break; |
| 500 | |
| 501 | case SOCKS5_AUTH_METHOD_NO_ACCEPTABLE_METHODS: |
| 502 | default: |
| 503 | ret = SOCKS5_STATE_END; |
| 504 | break; |
| 505 | } |
| 506 | } else { |
| 507 | AddDebugLogLineN(logProxy, wxT("Can't send"))do {} while (false); |
| 508 | } |
| 509 | } else { |
| 510 | ret = SOCKS5_STATE_END; |
| 511 | } |
| 512 | break; |
| 513 | |
| 514 | case SOCKS5_STATE_SEND_AUTHENTICATION_GSSAPI: |
| 515 | if (m_ok) { |
| 516 | if (CanReceive()) { |
| 517 | ret = SOCKS5_STATE_RECEIVE_AUTHENTICATION_GSSAPI; |
| 518 | } |
| 519 | } else { |
| 520 | ret = SOCKS5_STATE_END; |
| 521 | } |
| 522 | break; |
| 523 | |
| 524 | case SOCKS5_STATE_SEND_AUTHENTICATION_USERNAME_PASSWORD: |
| 525 | if (m_ok) { |
| 526 | if (CanReceive()) { |
| 527 | ret = SOCKS5_STATE_RECEIVE_AUTHENTICATION_USERNAME_PASSWORD; |
| 528 | } |
| 529 | } else { |
| 530 | ret = SOCKS5_STATE_END; |
| 531 | } |
| 532 | break; |
| 533 | |
| 534 | case SOCKS5_STATE_RECEIVE_AUTHENTICATION_GSSAPI: |
| 535 | ret = SOCKS5_STATE_PROCESS_AUTHENTICATION_GSSAPI; |
| 536 | break; |
| 537 | |
| 538 | case SOCKS5_STATE_RECEIVE_AUTHENTICATION_USERNAME_PASSWORD: |
| 539 | ret = SOCKS5_STATE_PROCESS_AUTHENTICATION_USERNAME_PASSWORD; |
| 540 | break; |
| 541 | |
| 542 | case SOCKS5_STATE_PROCESS_AUTHENTICATION_GSSAPI: |
| 543 | case SOCKS5_STATE_PROCESS_AUTHENTICATION_USERNAME_PASSWORD: |
| 544 | if (m_ok) { |
| 545 | if (CanSend()) { |
| 546 | ret = SOCKS5_STATE_SEND_COMMAND_REQUEST; |
| 547 | } |
| 548 | } else { |
| 549 | ret = SOCKS5_STATE_END; |
| 550 | } |
| 551 | break; |
| 552 | |
| 553 | case SOCKS5_STATE_SEND_COMMAND_REQUEST: |
| 554 | if (m_ok) { |
| 555 | if (CanReceive()) { |
| 556 | ret = SOCKS5_STATE_RECEIVE_COMMAND_REPLY; |
| 557 | } |
| 558 | } else { |
| 559 | ret = SOCKS5_STATE_END; |
| 560 | } |
| 561 | break; |
| 562 | |
| 563 | case SOCKS5_STATE_RECEIVE_COMMAND_REPLY: |
| 564 | ret = SOCKS5_STATE_PROCESS_COMMAND_REPLY; |
| 565 | break; |
| 566 | |
| 567 | case SOCKS5_STATE_PROCESS_COMMAND_REPLY: |
| 568 | ret = SOCKS5_STATE_END; |
| 569 | break; |
| 570 | |
| 571 | case SOCKS5_STATE_END: |
| 572 | default: |
| 573 | break; |
| 574 | } |
| 575 | |
| 576 | return ret; |
| 577 | } |
| 578 | |
| 579 | /** |
| 580 | * So, this is how you do it: the state machine is clocked by the events |
| 581 | * that happen inside the event handler. You can add a dummy event whenever |
| 582 | * you see that the system will not generate an event. But don't add dummy |
| 583 | * events before reads, reads should only be performed after input events. |
| 584 | * |
| 585 | * Maybe it makes sense to add a dummy event before a read if there is no |
| 586 | * state change (wait state). |
| 587 | * |
| 588 | * The event system will generate at least 2 events, one wxSOCKET_CONNECTION, |
| 589 | * one wxSOCKET_OUTPUT, so we will have 2 clocks in our state machine. Plus, each |
| 590 | * time there is unread data in the receive buffer of the socket, a wxSOCKET_INPUT |
| 591 | * event will be generated. If you feel you will need more clocks than these, use |
| 592 | * AddDummyEvent(), but I suggest you review your state machine design first. |
| 593 | */ |
| 594 | void CSocks5StateMachine::process_start(bool) |
| 595 | {} |
| 596 | |
| 597 | void CSocks5StateMachine::process_end(bool) |
| 598 | { |
| 599 | ReactivateSocket(); |
| 600 | } |
| 601 | |
| 602 | void CSocks5StateMachine::process_send_query_authentication_method(bool entry) |
| 603 | { |
| 604 | if (entry) { |
| 605 | // Prepare the authentication method negotiation packet |
| 606 | m_buffer[0] = SOCKS5_VERSION; |
| 607 | m_buffer[1] = 1; // Number of supported methods |
| 608 | m_buffer[2] = SOCKS5_AUTH_METHOD_NO_AUTH_REQUIRED; |
| 609 | m_packetLenght = 3; |
| 610 | if (m_proxyData.m_enablePassword) { |
| 611 | // add SOCKS5_AUTH_METHOD_GSSAPI here if we ever implement |
| 612 | // GSS-API authentication |
| 613 | m_buffer[1] = 2; |
| 614 | m_buffer[3] = SOCKS5_AUTH_METHOD_USERNAME_PASSWORD; |
| 615 | m_packetLenght = 4; |
| 616 | } |
| 617 | |
| 618 | // Send the authentication method negotiation packet |
| 619 | ProxyWrite(*m_proxyClientSocket, m_buffer, m_packetLenght); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | void CSocks5StateMachine::process_receive_authentication_method(bool entry) |
| 624 | { |
| 625 | if (entry) { |
| 626 | // Receive the method selection message |
| 627 | m_packetLenght = 2; |
| 628 | ProxyRead(*m_proxyClientSocket, m_buffer); |
| 629 | } |
| 630 | /* This is added because there will be no more input events. If the |
| 631 | * world was a nice place, we could think about joining the |
| 632 | * process_receive and the process_process states here, but some day |
| 633 | * we might have to deal with the fact that the i/o operation has been |
| 634 | * incomplete, and that we must finish our job the next time we enter |
| 635 | * this state. */ |
| 636 | AddDummyEvent(); |
| 637 | } |
| 638 | |
| 639 | void CSocks5StateMachine::process_process_authentication_method(bool entry) |
| 640 | { |
| 641 | if (entry) { |
| 642 | m_lastReply = m_buffer[1]; |
| 643 | m_ok = m_ok && m_buffer[0] == SOCKS5_VERSION; |
| 644 | } |
| 645 | /* Ok, this one is here because wxSOCKET_OUTPUT events only happen |
| 646 | * once when you connect the socket, and after that, only after a |
| 647 | * wxSOCKET_WOULDBLOCK error happens. */ |
| 648 | AddDummyEvent(); |
| 649 | } |
| 650 | |
| 651 | void CSocks5StateMachine::process_send_authentication_gssapi(bool) |
| 652 | { |
| 653 | // TODO or not TODO? That is the question... |
| 654 | m_ok = false; |
| 655 | } |
| 656 | |
| 657 | void CSocks5StateMachine::process_receive_authentication_gssapi(bool) |
| 658 | { |
| 659 | AddDummyEvent(); |
| 660 | } |
| 661 | |
| 662 | void CSocks5StateMachine::process_process_authentication_gssapi(bool) |
| 663 | { |
| 664 | AddDummyEvent(); |
| 665 | } |
| 666 | |
| 667 | void CSocks5StateMachine::process_send_authentication_username_password(bool entry) |
| 668 | { |
| 669 | if (entry) { |
| 670 | unsigned char lenUser = m_proxyData.m_userName.Len(); |
| 671 | unsigned char lenPassword = m_proxyData.m_password.Len(); |
| 672 | m_packetLenght = 1 + 1 + lenUser + 1 + lenPassword; |
| 673 | unsigned int offsetUser = 2; |
| 674 | unsigned int offsetPassword = offsetUser + lenUser + 1; |
| 675 | |
| 676 | // Prepare username/password buffer |
| 677 | m_buffer[0] = SOCKS5_AUTH_VERSION_USERNAME_PASSWORD; |
| 678 | m_buffer[offsetUser-1] = lenUser; |
| 679 | memcpy(m_buffer+offsetUser, unicode2char(m_proxyData.m_userName), |
| 680 | lenUser); |
| 681 | m_buffer[offsetPassword-1] = lenPassword; |
| 682 | memcpy(m_buffer+offsetPassword, unicode2char(m_proxyData.m_password), |
| 683 | lenPassword); |
| 684 | |
| 685 | // Send the username/password packet |
| 686 | ProxyWrite(*m_proxyClientSocket, m_buffer, m_packetLenght); |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | void CSocks5StateMachine::process_receive_authentication_username_password(bool entry) |
| 691 | { |
| 692 | if (entry) { |
| 693 | // Receive the server's authentication response |
| 694 | m_packetLenght = 2; |
| 695 | ProxyRead(*m_proxyClientSocket, m_buffer); |
| 696 | } |
| 697 | AddDummyEvent(); |
| 698 | } |
| 699 | |
| 700 | void CSocks5StateMachine::process_process_authentication_username_password(bool entry) |
| 701 | { |
| 702 | if (entry) { |
| 703 | // Process the server's reply |
| 704 | m_lastReply = m_buffer[1]; |
| 705 | m_ok = m_ok && |
| 706 | m_buffer[0] == SOCKS5_AUTH_VERSION_USERNAME_PASSWORD && |
| 707 | m_buffer[1] == SOCKS5_REPLY_SUCCEED; |
| 708 | } |
| 709 | AddDummyEvent(); |
| 710 | } |
| 711 | |
| 712 | void CSocks5StateMachine::process_send_command_request(bool entry) |
| 713 | { |
| 714 | if (entry) { |
| 715 | // Prepare the request command buffer |
| 716 | m_buffer[0] = SOCKS5_VERSION; |
| 717 | switch (m_proxyCommand) { |
| 718 | case PROXY_CMD_CONNECT: |
| 719 | m_buffer[1] = SOCKS5_CMD_CONNECT; |
| 720 | break; |
| 721 | |
| 722 | case PROXY_CMD_BIND: |
| 723 | m_buffer[1] = SOCKS5_CMD_BIND; |
| 724 | break; |
| 725 | |
| 726 | case PROXY_CMD_UDP_ASSOCIATE: |
| 727 | m_buffer[1] = SOCKS5_CMD_UDP_ASSOCIATE; |
| 728 | break; |
| 729 | } |
| 730 | m_buffer[2] = SOCKS5_RSV; |
| 731 | m_buffer[3] = SOCKS5_ATYP_IPV4_ADDRESS; |
| 732 | PokeUInt32( m_buffer+4, StringIPtoUint32(m_peerAddress->IPAddress()) ); |
| 733 | RawPokeUInt16( m_buffer+8, ENDIAN_HTONS( m_peerAddress->Service() )( ((wxUint16) ( (((wxUint16) (m_peerAddress->Service()) & (wxUint16) 0x00ffU) << 8) | (((wxUint16) (m_peerAddress ->Service()) & (wxUint16) 0xff00U) >> 8))) ) ); |
| 734 | |
| 735 | // Send the command packet |
| 736 | m_packetLenght = 10; |
| 737 | ProxyWrite(*m_proxyClientSocket, m_buffer, m_packetLenght); |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | void CSocks5StateMachine::process_receive_command_reply(bool entry) |
| 742 | { |
| 743 | if (entry) { |
| 744 | // The minimum number of bytes to read is 10 in the case of |
| 745 | // ATYP == SOCKS5_ATYP_IPV4_ADDRESS |
| 746 | m_packetLenght = 10; |
| 747 | ProxyRead(*m_proxyClientSocket, m_buffer); |
| 748 | } |
| 749 | AddDummyEvent(); |
| 750 | } |
| 751 | |
| 752 | void CSocks5StateMachine::process_process_command_reply(bool entry) |
| 753 | { |
| 754 | if (entry) { |
| 755 | m_lastReply = m_buffer[1]; |
| 756 | unsigned char addressType = m_buffer[3]; |
| 757 | // Process the server's reply |
| 758 | m_ok = m_ok && |
| 759 | m_buffer[0] == SOCKS5_VERSION && |
| 760 | m_buffer[1] == SOCKS5_REPLY_SUCCEED; |
| 761 | if (m_ok) { |
| 762 | // Read BND.ADDR |
| 763 | unsigned int portOffset = 0; |
| 764 | switch(addressType) { |
| 765 | case SOCKS5_ATYP_IPV4_ADDRESS: |
| 766 | { |
| 767 | const unsigned int addrOffset = 4; |
| 768 | portOffset = 8; |
| 769 | m_proxyBoundAddressIPV4.Hostname( PeekUInt32( m_buffer+addrOffset) ); |
| 770 | m_proxyBoundAddress = &m_proxyBoundAddressIPV4; |
| 771 | break; |
| 772 | } |
| 773 | case SOCKS5_ATYP_DOMAINNAME: |
| 774 | { |
| 775 | // Read the domain name |
| 776 | const unsigned int addrOffset = 5; |
| 777 | portOffset = 10 + m_buffer[4]; |
| 778 | char c = m_buffer[portOffset]; |
| 779 | m_buffer[portOffset] = 0; |
| 780 | m_proxyBoundAddressIPV4.Hostname( |
| 781 | char2unicode(m_buffer+addrOffset)); |
| 782 | m_proxyBoundAddress = &m_proxyBoundAddressIPV4; |
| 783 | m_buffer[portOffset] = c; |
| 784 | break; |
| 785 | } |
| 786 | case SOCKS5_ATYP_IPV6_ADDRESS: |
| 787 | { |
| 788 | portOffset = 20; |
| 789 | // TODO |
| 790 | // IPV6 not yet implemented in wx |
| 791 | //m_proxyBoundAddress.Hostname(Uint128toStringIP( |
| 792 | // *((uint128 *)(m_buffer+addrOffset)) )); |
| 793 | //m_proxyBoundAddress = &m_proxyBoundAddressIPV6; |
| 794 | m_ok = false; |
| 795 | break; |
| 796 | } |
| 797 | } |
| 798 | // Set the packet length at last |
| 799 | m_packetLenght = portOffset + 2; |
| 800 | // Read BND.PORT |
| 801 | m_proxyBoundAddress->Service( ENDIAN_NTOHS( RawPeekUInt16( m_buffer+portOffset) )( ((wxUint16) ( (((wxUint16) (RawPeekUInt16( m_buffer+portOffset )) & (wxUint16) 0x00ffU) << 8) | (((wxUint16) (RawPeekUInt16 ( m_buffer+portOffset)) & (wxUint16) 0xff00U) >> 8) )) ) ); |
| 802 | } |
| 803 | } |
| 804 | AddDummyEvent(); |
| 805 | } |
| 806 | |
| 807 | //------------------------------------------------------------------------------ |
| 808 | // CSocks4StateMachine |
| 809 | //------------------------------------------------------------------------------ |
| 810 | |
| 811 | CSocks4StateMachine::CSocks4StateMachine( |
| 812 | const CProxyData &proxyData, |
| 813 | CProxyCommand proxyCommand) |
| 814 | : |
| 815 | CProxyStateMachine( |
| 816 | wxString(wxT("Socks4")L"Socks4"), SOCKS4_MAX_STATES, proxyData, proxyCommand) |
| 817 | { |
| 818 | m_process_state[0] = &CSocks4StateMachine::process_start; |
| 819 | m_state_name[0] = wxT("process_start")L"process_start"; |
| 820 | m_process_state[1] = &CSocks4StateMachine::process_end; |
| 821 | m_state_name[1] = wxT("process_end")L"process_end"; |
| 822 | m_process_state[2] = &CSocks4StateMachine::process_send_command_request; |
| 823 | m_state_name[2] = wxT("process_send_command_request")L"process_send_command_request"; |
| 824 | m_process_state[3] = &CSocks4StateMachine::process_receive_command_reply; |
| 825 | m_state_name[3] = wxT("process_receive_command_reply")L"process_receive_command_reply"; |
| 826 | m_process_state[4] = &CSocks4StateMachine::process_process_command_reply; |
| 827 | m_state_name[4] = wxT("process_process_command_reply")L"process_process_command_reply"; |
| 828 | } |
| 829 | |
| 830 | void CSocks4StateMachine::process_state(t_sm_state state, bool entry) |
| 831 | { |
| 832 | (this->*m_process_state[state])(entry); |
| 833 | |
| 834 | #ifdef __DEBUG__ |
| 835 | #if DEBUG_DUMP_PROXY_MSG0 |
| 836 | int n = 0; |
| 837 | |
| 838 | switch (state) { |
| 839 | case SOCKS4_STATE_START: |
| 840 | case SOCKS4_STATE_END: |
| 841 | case SOCKS4_STATE_RECEIVE_COMMAND_REPLY: |
| 842 | default: |
| 843 | n = 0; |
| 844 | break; |
| 845 | |
| 846 | case SOCKS4_STATE_SEND_COMMAND_REQUEST: |
| 847 | n = m_packetLenght; |
| 848 | break; |
| 849 | |
| 850 | case SOCKS4_STATE_PROCESS_COMMAND_REPLY: |
| 851 | n = m_lastRead; |
| 852 | break; |
| 853 | } |
| 854 | |
| 855 | if (entry) { |
| 856 | DumpMem(m_buffer, n, m_state_name[state], m_ok); |
| 857 | } |
| 858 | #endif |
| 859 | AddDebugLogLineN(logProxy, CFormat(wxString(wxT("state: %s clocks: %u"))) % m_state_name[state] % GetClocksInCurrentState())do {} while (false); |
| 860 | #endif // __DEBUG__ |
| 861 | } |
| 862 | |
| 863 | t_sm_state CSocks4StateMachine::next_state(t_sm_event event) |
| 864 | { |
| 865 | // Default is stay in current state |
| 866 | t_sm_state ret = HandleEvent(event); |
| 867 | switch (GetState()) { |
| 868 | case SOCKS4_STATE_START: |
| 869 | if (m_isConnected && !m_isLost && CanSend()) { |
| 870 | ret = SOCKS4_STATE_SEND_COMMAND_REQUEST; |
| 871 | } |
| 872 | break; |
| 873 | |
| 874 | case SOCKS4_STATE_SEND_COMMAND_REQUEST: |
| 875 | if (m_ok) { |
| 876 | if (CanReceive()) { |
| 877 | ret = SOCKS4_STATE_RECEIVE_COMMAND_REPLY; |
| 878 | } |
| 879 | } else { |
| 880 | ret = SOCKS4_STATE_END; |
| 881 | } |
| 882 | break; |
| 883 | |
| 884 | case SOCKS4_STATE_RECEIVE_COMMAND_REPLY: |
| 885 | ret = SOCKS4_STATE_PROCESS_COMMAND_REPLY; |
| 886 | break; |
| 887 | |
| 888 | case SOCKS4_STATE_PROCESS_COMMAND_REPLY: |
| 889 | ret = SOCKS4_STATE_END; |
| 890 | break; |
| 891 | |
| 892 | case SOCKS4_STATE_END: |
| 893 | default: |
| 894 | break; |
| 895 | } |
| 896 | |
| 897 | return ret; |
| 898 | } |
| 899 | |
| 900 | void CSocks4StateMachine::process_start(bool) |
| 901 | {} |
| 902 | |
| 903 | void CSocks4StateMachine::process_end(bool) |
| 904 | { |
| 905 | ReactivateSocket(); |
| 906 | } |
| 907 | |
| 908 | void CSocks4StateMachine::process_send_command_request(bool entry) |
| 909 | { |
| 910 | if (entry) { |
| 911 | // Prepare the request command buffer |
| 912 | m_buffer[0] = SOCKS4_VERSION; |
| 913 | switch (m_proxyCommand) { |
| 914 | case PROXY_CMD_CONNECT: |
| 915 | m_buffer[1] = SOCKS4_CMD_CONNECT; |
| 916 | break; |
| 917 | |
| 918 | case PROXY_CMD_BIND: |
| 919 | m_buffer[1] = SOCKS4_CMD_BIND; |
| 920 | break; |
| 921 | |
| 922 | case PROXY_CMD_UDP_ASSOCIATE: |
| 923 | m_ok = false; |
| 924 | return; |
| 925 | break; |
| 926 | } |
| 927 | RawPokeUInt16(m_buffer+2, ENDIAN_HTONS(m_peerAddress->Service())( ((wxUint16) ( (((wxUint16) (m_peerAddress->Service()) & (wxUint16) 0x00ffU) << 8) | (((wxUint16) (m_peerAddress ->Service()) & (wxUint16) 0xff00U) >> 8))) )); |
| 928 | // Special processing for SOCKS4a |
| 929 | switch (m_proxyData.m_proxyType) { |
| 930 | case PROXY_SOCKS4a: |
| 931 | PokeUInt32(m_buffer+4, StringIPtoUint32(wxT("0.0.0.1")L"0.0.0.1")); |
| 932 | break; |
| 933 | case PROXY_SOCKS4: |
| 934 | default: |
| 935 | PokeUInt32(m_buffer+4, StringIPtoUint32(m_peerAddress->IPAddress())); |
| 936 | break; |
| 937 | } |
| 938 | // Common processing for SOCKS4/SOCKS4a |
| 939 | unsigned int offsetUser = 8; |
| 940 | unsigned char lenUser = 0; |
| 941 | if (m_proxyData.m_enablePassword) { |
| 942 | lenUser = m_proxyData.m_userName.Len(); |
| 943 | memcpy(m_buffer + offsetUser, unicode2char(m_proxyData.m_userName), lenUser); |
| 944 | } |
| 945 | m_buffer[offsetUser + lenUser] = 0; |
| 946 | // Special processing for SOCKS4a |
| 947 | switch (m_proxyData.m_proxyType) { |
| 948 | case PROXY_SOCKS4a: { |
| 949 | unsigned int offsetDomain = offsetUser + lenUser + 1; |
| 950 | // The Hostname() method was used here before, but I don't see why we can't use |
| 951 | // the IP address which we actually know instead here. |
| 952 | wxString hostname(m_peerAddress->IPAddress()); |
| 953 | unsigned char lenDomain = hostname.Len(); |
| 954 | memcpy(m_buffer + offsetDomain, |
| 955 | unicode2char(hostname), lenDomain); |
| 956 | m_buffer[offsetDomain + lenDomain] = 0; |
| 957 | m_packetLenght = 1 + 1 + 2 + 4 + lenUser + 1 + lenDomain + 1; |
| 958 | break; |
| 959 | } |
| 960 | case PROXY_SOCKS4: |
| 961 | default: |
| 962 | m_packetLenght = 1 + 1 + 2 + 4 + lenUser + 1; |
| 963 | break; |
| 964 | } |
| 965 | // Send the command packet |
| 966 | ProxyWrite(*m_proxyClientSocket, m_buffer, m_packetLenght); |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | void CSocks4StateMachine::process_receive_command_reply(bool entry) |
| 971 | { |
| 972 | if (entry) { |
| 973 | // Receive the server's reply |
| 974 | m_packetLenght = 8; |
| 975 | ProxyRead(*m_proxyClientSocket, m_buffer); |
| 976 | } |
| 977 | AddDummyEvent(); |
| 978 | } |
| 979 | |
| 980 | void CSocks4StateMachine::process_process_command_reply(bool entry) |
| 981 | { |
| 982 | if (entry) { |
| 983 | m_lastReply = m_buffer[1]; |
| 984 | |
| 985 | // Process the server's reply |
| 986 | m_ok = m_ok && |
| 987 | m_buffer[0] == SOCKS4_REPLY_CODE && |
| 988 | m_buffer[1] == SOCKS4_REPLY_GRANTED; |
| 989 | if (m_ok) { |
| 990 | // Read BND.PORT |
| 991 | const unsigned int portOffset = 2; |
| 992 | m_ok = m_proxyBoundAddressIPV4.Service(ENDIAN_NTOHS(( ((wxUint16) ( (((wxUint16) (RawPeekUInt16( m_buffer+portOffset )) & (wxUint16) 0x00ffU) << 8) | (((wxUint16) (RawPeekUInt16 ( m_buffer+portOffset)) & (wxUint16) 0xff00U) >> 8) )) ) |
| 993 | RawPeekUInt16( m_buffer+portOffset) )( ((wxUint16) ( (((wxUint16) (RawPeekUInt16( m_buffer+portOffset )) & (wxUint16) 0x00ffU) << 8) | (((wxUint16) (RawPeekUInt16 ( m_buffer+portOffset)) & (wxUint16) 0xff00U) >> 8) )) ) ); |
| 994 | // Read BND.ADDR |
| 995 | const unsigned int addrOffset = 4; |
| 996 | m_ok = m_ok && |
| 997 | m_proxyBoundAddressIPV4.Hostname( PeekUInt32( m_buffer+addrOffset ) ); |
| 998 | m_proxyBoundAddress = &m_proxyBoundAddressIPV4; |
| 999 | } |
| 1000 | } |
| 1001 | AddDummyEvent(); |
| 1002 | } |
| 1003 | |
| 1004 | //------------------------------------------------------------------------------ |
| 1005 | // CHttpStateMachine |
| 1006 | //------------------------------------------------------------------------------ |
| 1007 | |
| 1008 | CHttpStateMachine::CHttpStateMachine( |
| 1009 | const CProxyData &proxyData, |
| 1010 | CProxyCommand proxyCommand) |
| 1011 | : |
| 1012 | CProxyStateMachine( |
| 1013 | wxString(wxT("Http")L"Http"), HTTP_MAX_STATES, proxyData, proxyCommand) |
| 1014 | { |
| 1015 | m_process_state[0] = &CHttpStateMachine::process_start; |
| 1016 | m_state_name[0] = wxT("process_start")L"process_start"; |
| 1017 | m_process_state[1] = &CHttpStateMachine::process_end; |
| 1018 | m_state_name[1] = wxT("process_end")L"process_end"; |
| 1019 | m_process_state[2] = &CHttpStateMachine::process_send_command_request; |
| 1020 | m_state_name[2] = wxT("process_send_command_request")L"process_send_command_request"; |
| 1021 | m_process_state[3] = &CHttpStateMachine::process_receive_command_reply; |
| 1022 | m_state_name[3] = wxT("process_receive_command_reply")L"process_receive_command_reply"; |
| 1023 | m_process_state[4] = &CHttpStateMachine::process_process_command_reply; |
| 1024 | m_state_name[4] = wxT("process_process_command_reply")L"process_process_command_reply"; |
| 1025 | } |
| 1026 | |
| 1027 | void CHttpStateMachine::process_state(t_sm_state state, bool entry) |
| 1028 | { |
| 1029 | (this->*m_process_state[state])(entry); |
| 1030 | |
| 1031 | #ifdef __DEBUG__ |
| 1032 | #if DEBUG_DUMP_PROXY_MSG0 |
| 1033 | int n = 0; |
| 1034 | |
| 1035 | switch (state) { |
| 1036 | case HTTP_STATE_START: |
| 1037 | case HTTP_STATE_END: |
| 1038 | case HTTP_STATE_RECEIVE_COMMAND_REPLY: |
| 1039 | default: |
| 1040 | n = 0; |
| 1041 | break; |
| 1042 | |
| 1043 | case HTTP_STATE_SEND_COMMAND_REQUEST: |
| 1044 | n = m_packetLenght; |
| 1045 | break; |
| 1046 | |
| 1047 | case HTTP_STATE_PROCESS_COMMAND_REPLY: |
| 1048 | n = m_lastRead; |
| 1049 | break; |
| 1050 | } |
| 1051 | |
| 1052 | if (entry) { |
| 1053 | DumpMem(m_buffer, n, m_state_name[state], m_ok); |
| 1054 | } |
| 1055 | #endif |
| 1056 | AddDebugLogLineN(logProxy, CFormat(wxString(wxT("state: %s clocks: %u"))) % m_state_name[state] % GetClocksInCurrentState())do {} while (false); |
| 1057 | #endif // __DEBUG__ |
| 1058 | } |
| 1059 | |
| 1060 | t_sm_state CHttpStateMachine::next_state(t_sm_event event) |
| 1061 | { |
| 1062 | // Default is stay in current state |
| 1063 | t_sm_state ret = HandleEvent(event); |
| 1064 | switch (GetState()) { |
| 1065 | case HTTP_STATE_START: |
| 1066 | if (m_isConnected && !m_isLost && CanSend()) { |
| 1067 | ret = HTTP_STATE_SEND_COMMAND_REQUEST; |
| 1068 | } |
| 1069 | break; |
| 1070 | |
| 1071 | case HTTP_STATE_SEND_COMMAND_REQUEST: |
| 1072 | if (m_ok) { |
| 1073 | if (CanReceive()) { |
| 1074 | ret = HTTP_STATE_RECEIVE_COMMAND_REPLY; |
| 1075 | } |
| 1076 | } else { |
| 1077 | ret = HTTP_STATE_END; |
| 1078 | } |
| 1079 | break; |
| 1080 | |
| 1081 | case HTTP_STATE_RECEIVE_COMMAND_REPLY: |
| 1082 | ret = HTTP_STATE_PROCESS_COMMAND_REPLY; |
| 1083 | break; |
| 1084 | |
| 1085 | case HTTP_STATE_PROCESS_COMMAND_REPLY: |
| 1086 | ret = HTTP_STATE_END; |
| 1087 | break; |
| 1088 | |
| 1089 | case HTTP_STATE_END: |
| 1090 | default: |
| 1091 | break; |
| 1092 | } |
| 1093 | |
| 1094 | return ret; |
| 1095 | } |
| 1096 | |
| 1097 | void CHttpStateMachine::process_start(bool) |
| 1098 | {} |
| 1099 | |
| 1100 | void CHttpStateMachine::process_end(bool) |
| 1101 | { |
| 1102 | ReactivateSocket(); |
| 1103 | } |
| 1104 | |
| 1105 | void CHttpStateMachine::process_send_command_request(bool entry) |
| 1106 | { |
| 1107 | if (entry) { |
| 1108 | // Prepare the request command buffer |
| 1109 | wxString ip = m_peerAddress->IPAddress(); |
| 1110 | uint16 port = m_peerAddress->Service(); |
| 1111 | wxString userPass; |
| 1112 | wxString userPassEncoded; |
| 1113 | if (m_proxyData.m_enablePassword) { |
| 1114 | userPass = m_proxyData.m_userName + wxT(":")L":" + m_proxyData.m_password; |
| 1115 | userPassEncoded = |
| 1116 | EncodeBase64(unicode2char(userPass), userPass.Length()).Trim(); |
| 1117 | } |
| 1118 | wxString msg; |
| 1119 | |
| 1120 | switch (m_proxyCommand) { |
| 1121 | case PROXY_CMD_CONNECT: |
| 1122 | msg << |
| 1123 | wxT("CONNECT ")L"CONNECT " << ip << wxT(":")L":" << port << wxT(" HTTP/1.1\r\n")L" HTTP/1.1\r\n" << |
| 1124 | wxT("Host: ")L"Host: " << ip << wxT(":")L":" << port << wxT("\r\n")L"\r\n"; |
| 1125 | if (m_proxyData.m_enablePassword) { |
| 1126 | msg << wxT("Proxy-Authorization: Basic ")L"Proxy-Authorization: Basic " << userPassEncoded << wxT("\r\n")L"\r\n"; |
| 1127 | } |
| 1128 | msg << wxT("\r\n")L"\r\n"; |
| 1129 | break; |
| 1130 | |
| 1131 | case PROXY_CMD_BIND: |
| 1132 | m_ok = false; |
| 1133 | break; |
| 1134 | |
| 1135 | case PROXY_CMD_UDP_ASSOCIATE: |
| 1136 | m_ok = false; |
| 1137 | return; |
| 1138 | break; |
This statement is never executed | |
| 1139 | } |
| 1140 | // Send the command packet |
| 1141 | m_packetLenght = msg.Len(); |
| 1142 | memcpy(m_buffer, unicode2char(msg), m_packetLenght+1); |
| 1143 | ProxyWrite(*m_proxyClientSocket, m_buffer, m_packetLenght); |
| 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | void CHttpStateMachine::process_receive_command_reply(bool entry) |
| 1148 | { |
| 1149 | if (entry) { |
| 1150 | // Receive the server's reply -- Use a large number, but don't |
| 1151 | // Expect to get it all. HTTP protocol does not have a fixed length. |
| 1152 | m_packetLenght = PROXY_BUFFER_SIZE; |
| 1153 | ProxyRead(*m_proxyClientSocket, m_buffer); |
| 1154 | } |
| 1155 | AddDummyEvent(); |
| 1156 | } |
| 1157 | |
| 1158 | /* |
| 1159 | * HTTP Proxy server response should be something like: |
| 1160 | * "HTTP/1.1 200 Connection established\r\n\r\n" |
| 1161 | * but that may vary. The important thing is the "200" |
| 1162 | * code, that means success. |
| 1163 | */ |
| 1164 | static const char HTTP_AUTH_RESPONSE[] = "HTTP/"; |
| 1165 | static const int HTTP_AUTH_RESPONSE_LENGHT = strlen(HTTP_AUTH_RESPONSE); |
| 1166 | void CHttpStateMachine::process_process_command_reply(bool entry) |
| 1167 | { |
| 1168 | if (entry) { |
| 1169 | // The position of the first space in the buffer |
| 1170 | int i = 8; |
| 1171 | while (m_buffer[i] == ' ') { |
| 1172 | i++; |
| 1173 | } |
| 1174 | // Process the server's reply |
| 1175 | m_ok = !memcmp(m_buffer + 0, HTTP_AUTH_RESPONSE, HTTP_AUTH_RESPONSE_LENGHT) && |
| 1176 | !memcmp(m_buffer + i, "200", 3); |
| 1177 | } |
| 1178 | AddDummyEvent(); |
| 1179 | } |
| 1180 | |
| 1181 | //------------------------------------------------------------------------------ |
| 1182 | // CProxySocket |
| 1183 | //------------------------------------------------------------------------------ |
| 1184 | |
| 1185 | CProxySocket::CProxySocket( |
| 1186 | muleSocketFlags flags, |
| 1187 | const CProxyData *proxyData, |
| 1188 | CProxyCommand proxyCommand, |
| 1189 | CDatagramSocketProxy *udpSocket) |
| 1190 | : |
| 1191 | CLibSocket(flags), |
| 1192 | m_proxyStateMachine(NULL__null), |
| 1193 | m_udpSocket(udpSocket) |
| 1194 | #ifndef ASIO_SOCKETS1 |
| 1195 | ,m_socketEventHandler(NULL__null) |
| 1196 | ,m_socketEventHandlerId(0) |
| 1197 | ,m_savedSocketEventHandler(NULL__null) |
| 1198 | ,m_savedSocketEventHandlerId(0) |
| 1199 | #endif |
| 1200 | { |
| 1201 | SetProxyData(proxyData); |
| 1202 | if (m_useProxy) { |
| 1203 | switch (m_proxyData.m_proxyType) { |
| 1204 | case PROXY_NONE: |
| 1205 | break; |
| 1206 | |
| 1207 | case PROXY_SOCKS5: |
| 1208 | m_proxyStateMachine = |
| 1209 | new CSocks5StateMachine(*proxyData, proxyCommand); |
| 1210 | break; |
| 1211 | |
| 1212 | case PROXY_SOCKS4: |
| 1213 | case PROXY_SOCKS4a: |
| 1214 | m_proxyStateMachine = |
| 1215 | new CSocks4StateMachine(*proxyData, proxyCommand); |
| 1216 | break; |
| 1217 | |
| 1218 | case PROXY_HTTP: |
| 1219 | m_proxyStateMachine = |
| 1220 | new CHttpStateMachine(*proxyData, proxyCommand); |
| 1221 | break; |
| 1222 | |
| 1223 | default: |
| 1224 | break; |
| 1225 | } |
| 1226 | } |
| 1227 | } |
| 1228 | |
| 1229 | CProxySocket::~CProxySocket() |
| 1230 | { |
| 1231 | delete m_proxyStateMachine; |
| 1232 | } |
| 1233 | |
| 1234 | void CProxySocket::SetProxyData(const CProxyData *proxyData) |
| 1235 | { |
| 1236 | m_useProxy = proxyData != NULL__null && proxyData->m_proxyEnable; |
| 1237 | if (proxyData) { |
| 1238 | m_proxyData = *proxyData; |
| 1239 | m_proxyAddress.Hostname(m_proxyData.m_proxyHostName); |
| 1240 | m_proxyAddress.Service(m_proxyData.m_proxyPort); |
| 1241 | } else { |
| 1242 | m_proxyData.Clear(); |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | bool CProxySocket::Start(const amuleIPV4Address &peerAddress) |
| 1247 | { |
| 1248 | #ifdef ASIO_SOCKETS1 |
| 1249 | SetProxyState(true, &peerAddress); |
| 1250 | #else |
| 1251 | SaveState(); |
| 1252 | // Important note! SaveState()/RestoreState() DO NOT save/restore |
| 1253 | // the event handler. The method SaveEventHandler() has been created |
| 1254 | // for that. |
| 1255 | SaveEventHandler(); |
| 1256 | SetEventHandler(g_proxyEventHandler, ID_PROXY_SOCKET_EVENT); |
| 1257 | SetNotify( |
| 1258 | wxSOCKET_CONNECTION_FLAG | |
| 1259 | wxSOCKET_INPUT_FLAG | |
| 1260 | wxSOCKET_OUTPUT_FLAG | |
| 1261 | wxSOCKET_LOST_FLAG); |
| 1262 | Notify(true); |
| 1263 | #endif |
| 1264 | Connect(m_proxyAddress, false); |
| 1265 | SetFlags(MULE_SOCKET_NONE); |
| 1266 | return m_proxyStateMachine->Start(peerAddress, this); |
| 1267 | } |
| 1268 | |
| 1269 | bool CProxySocket::ProxyIsCapableOf(CProxyCommand proxyCommand) const |
| 1270 | { |
| 1271 | bool ret = false; |
| 1272 | |
| 1273 | switch (m_proxyData.m_proxyType) { |
| 1274 | case PROXY_NONE: |
| 1275 | ret = false; |
| 1276 | break; |
| 1277 | |
| 1278 | case PROXY_SOCKS5: |
| 1279 | ret = proxyCommand == PROXY_CMD_CONNECT || |
| 1280 | proxyCommand == PROXY_CMD_BIND || |
| 1281 | proxyCommand == PROXY_CMD_UDP_ASSOCIATE; |
| 1282 | break; |
| 1283 | |
| 1284 | case PROXY_SOCKS4: |
| 1285 | case PROXY_SOCKS4a: |
| 1286 | ret = proxyCommand == PROXY_CMD_CONNECT || |
| 1287 | proxyCommand == PROXY_CMD_BIND; |
| 1288 | break; |
| 1289 | |
| 1290 | case PROXY_HTTP: |
| 1291 | ret = proxyCommand == PROXY_CMD_CONNECT; |
| 1292 | break; |
| 1293 | } |
| 1294 | |
| 1295 | return ret; |
| 1296 | } |
| 1297 | |
| 1298 | //------------------------------------------------------------------------------ |
| 1299 | // CSocketClientProxy |
| 1300 | //------------------------------------------------------------------------------ |
| 1301 | |
| 1302 | CSocketClientProxy::CSocketClientProxy( |
| 1303 | muleSocketFlags flags, |
| 1304 | const CProxyData *proxyData) |
| 1305 | : |
| 1306 | CProxySocket(flags, proxyData, PROXY_CMD_CONNECT) |
| 1307 | { |
| 1308 | } |
| 1309 | |
| 1310 | bool CSocketClientProxy::Connect(amuleIPV4Address &address, bool wait) |
| 1311 | { |
| 1312 | wxMutexLocker lock(m_socketLocker); |
| 1313 | bool ok; |
| 1314 | |
| 1315 | if (GetUseProxy() && ProxyIsCapableOf(PROXY_CMD_CONNECT)) { |
| 1316 | ok = Start(address); |
| 1317 | } else { |
| 1318 | ok = CLibSocket::Connect(address, wait); |
| 1319 | } |
| 1320 | |
| 1321 | return ok; |
| 1322 | } |
| 1323 | |
| 1324 | uint32 CSocketClientProxy::Read(void *buffer, wxUint32 nbytes) |
| 1325 | { |
| 1326 | wxMutexLocker lock(m_socketLocker); |
| 1327 | return CProxySocket::Read(buffer, nbytes); |
| 1328 | } |
| 1329 | |
| 1330 | uint32 CSocketClientProxy::Write(const void *buffer, wxUint32 nbytes) |
| 1331 | { |
| 1332 | wxMutexLocker lock(m_socketLocker); |
| 1333 | return CProxySocket::Write(buffer, nbytes); |
| 1334 | } |
| 1335 | |
| 1336 | //------------------------------------------------------------------------------ |
| 1337 | // CSocketServerProxy |
| 1338 | //------------------------------------------------------------------------------ |
| 1339 | |
| 1340 | CSocketServerProxy::CSocketServerProxy( |
| 1341 | amuleIPV4Address &address, |
| 1342 | muleSocketFlags flags, |
| 1343 | const CProxyData *) |
| 1344 | : |
| 1345 | CLibSocketServer(address, flags) |
| 1346 | { |
| 1347 | /* Maybe some day when socks6 is out... :) */ |
| 1348 | } |
| 1349 | |
| 1350 | //------------------------------------------------------------------------------ |
| 1351 | // CDatagramSocketProxy |
| 1352 | //------------------------------------------------------------------------------ |
| 1353 | |
| 1354 | CDatagramSocketProxy::CDatagramSocketProxy( |
| 1355 | amuleIPV4Address &address, muleSocketFlags flags, const CProxyData *proxyData) |
| 1356 | : |
| 1357 | CLibUDPSocket(address, flags), |
| 1358 | m_proxyTCPSocket(MULE_SOCKET_NOWAIT, proxyData, PROXY_CMD_UDP_ASSOCIATE, this) |
| 1359 | { |
| 1360 | m_udpSocketOk = false; |
| 1361 | if ( m_proxyTCPSocket.GetUseProxy() && |
| 1362 | m_proxyTCPSocket.ProxyIsCapableOf(PROXY_CMD_UDP_ASSOCIATE)) { |
| 1363 | m_proxyTCPSocket.Start(address); |
| 1364 | } else { |
| 1365 | } |
| 1366 | m_lastUDPOperation = UDP_OPERATION_NONE; |
| 1367 | } |
| 1368 | |
| 1369 | CDatagramSocketProxy::~CDatagramSocketProxy() |
| 1370 | { |
| 1371 | // From RFC-1928: |
| 1372 | // "A UDP association terminates when the TCP connection that the |
| 1373 | // UDP ASSOCIATE request arrived terminates." |
| 1374 | } |
| 1375 | |
| 1376 | uint32 CDatagramSocketProxy::RecvFrom(amuleIPV4Address& addr, void* buf, uint32 nBytes) |
| 1377 | { |
| 1378 | uint32 read = 0; |
| 1379 | wxMutexLocker lock(m_socketLocker); |
| 1380 | m_lastUDPOperation = UDP_OPERATION_RECV_FROM; |
| 1381 | if (m_proxyTCPSocket.GetUseProxy()) { |
| 1382 | if (m_udpSocketOk) { |
| 1383 | char *bufUDP = NULL__null; |
| 1384 | if (nBytes + PROXY_UDP_MAXIMUM_OVERHEAD > PROXY_BUFFER_SIZE) { |
| 1385 | bufUDP = new char[nBytes + PROXY_UDP_MAXIMUM_OVERHEAD]; |
| 1386 | } else { |
| 1387 | bufUDP = m_proxyTCPSocket.GetBuffer(); |
| 1388 | } |
| 1389 | read = CLibUDPSocket::RecvFrom( |
| 1390 | m_proxyTCPSocket.GetProxyBoundAddress(), |
| 1391 | bufUDP, nBytes + PROXY_UDP_MAXIMUM_OVERHEAD); |
| 1392 | unsigned int offset; |
| 1393 | switch (m_proxyTCPSocket.GetBuffer()[3]) { |
| 1394 | case SOCKS5_ATYP_IPV4_ADDRESS: { |
| 1395 | offset = PROXY_UDP_OVERHEAD_IPV4; |
| 1396 | try { |
| 1397 | amuleIPV4Address &a = dynamic_cast<amuleIPV4Address &>(addr); |
| 1398 | a.Hostname( PeekUInt32( m_proxyTCPSocket.GetBuffer()+4 ) ); |
| 1399 | a.Service( ENDIAN_NTOHS( RawPeekUInt16( m_proxyTCPSocket.GetBuffer()+8) )( ((wxUint16) ( (((wxUint16) (RawPeekUInt16( m_proxyTCPSocket .GetBuffer()+8)) & (wxUint16) 0x00ffU) << 8) | (((wxUint16 ) (RawPeekUInt16( m_proxyTCPSocket.GetBuffer()+8)) & (wxUint16 ) 0xff00U) >> 8))) ) ); |
| 1400 | } catch (const std::bad_cast& WXUNUSED(e)) { |
| 1401 | AddDebugLogLineN(logProxy,do {} while (false) |
| 1402 | wxT("(2)bad_cast exception!"))do {} while (false); |
| 1403 | wxFAILdo { if ( wxTheAssertHandler && (wxOnAssert("Proxy.cpp" , 1403, __FUNCTION__, "\"Assert failure\"", (const char*)__null ), wxTrapInAssert) ) { wxTrapInAssert = false; asm volatile ( "int $3"); } } while ( (void)0, 0 ); |
| 1404 | } |
| 1405 | } |
| 1406 | break; |
| 1407 | |
| 1408 | case SOCKS5_ATYP_DOMAINNAME: |
| 1409 | offset = PROXY_UDP_OVERHEAD_DOMAIN_NAME; |
| 1410 | break; |
| 1411 | |
| 1412 | case SOCKS5_ATYP_IPV6_ADDRESS: |
| 1413 | offset = PROXY_UDP_OVERHEAD_IPV6; |
| 1414 | break; |
| 1415 | |
| 1416 | default: |
| 1417 | /* Error! */ |
| 1418 | offset = 0; |
| 1419 | break; |
| 1420 | } |
| 1421 | memcpy(buf, bufUDP + offset, nBytes); |
| 1422 | // Uncomment here to see the buffer contents on console |
| 1423 | // DumpMem(bufUDP, wxDatagramSocket::LastCount(), wxT("RecvFrom"), 3); |
| 1424 | |
| 1425 | /* Only delete buffer if it was dynamically created */ |
| 1426 | if (bufUDP != m_proxyTCPSocket.GetBuffer()) { |
| 1427 | /* We should use a fixed buffer to avoid |
| 1428 | * new/delete it all the time. |
| 1429 | * I need an upper bound */ |
| 1430 | delete [] bufUDP; |
| 1431 | } |
| 1432 | /* There is still one problem pending, fragmentation. |
| 1433 | * Either we support it or we have to drop fragmented |
| 1434 | * messages. I vote for drop :) |
| 1435 | */ |
| 1436 | } |
| 1437 | } else { |
| 1438 | read = CLibUDPSocket::RecvFrom(addr, buf, nBytes); |
| 1439 | } |
| 1440 | |
| 1441 | return read; |
| 1442 | } |
| 1443 | |
| 1444 | uint32 CDatagramSocketProxy::SendTo(const amuleIPV4Address& addr, const void* buf, uint32 nBytes) |
| 1445 | { |
| 1446 | uint32 sent = 0; |
| 1447 | wxMutexLocker lock(m_socketLocker); |
| 1448 | m_lastUDPOperation = UDP_OPERATION_SEND_TO; |
| 1449 | m_lastUDPOverhead = PROXY_UDP_OVERHEAD_IPV4; |
| 1450 | if (m_proxyTCPSocket.GetUseProxy()) { |
| 1451 | if (m_udpSocketOk) { |
| 1452 | m_proxyTCPSocket.GetBuffer()[0] = SOCKS5_RSV; // Reserved |
| 1453 | m_proxyTCPSocket.GetBuffer()[1] = SOCKS5_RSV; // Reserved |
| 1454 | m_proxyTCPSocket.GetBuffer()[2] = 0; // FRAG |
| 1455 | m_proxyTCPSocket.GetBuffer()[3] = SOCKS5_ATYP_IPV4_ADDRESS; |
| 1456 | PokeUInt32( m_proxyTCPSocket.GetBuffer()+4, StringIPtoUint32(addr.IPAddress())); |
| 1457 | RawPokeUInt16( m_proxyTCPSocket.GetBuffer()+8, ENDIAN_HTONS( addr.Service() )( ((wxUint16) ( (((wxUint16) (addr.Service()) & (wxUint16 ) 0x00ffU) << 8) | (((wxUint16) (addr.Service()) & ( wxUint16) 0xff00U) >> 8))) ) ); |
| 1458 | memcpy(m_proxyTCPSocket.GetBuffer() + PROXY_UDP_OVERHEAD_IPV4, buf, nBytes); |
| 1459 | nBytes += PROXY_UDP_OVERHEAD_IPV4; |
| 1460 | sent = CLibUDPSocket::SendTo( |
| 1461 | m_proxyTCPSocket.GetProxyBoundAddress(), |
| 1462 | m_proxyTCPSocket.GetBuffer(), nBytes); |
| 1463 | // Uncomment here to see the buffer contents on console |
| 1464 | // DumpMem(m_proxyTCPSocket.GetBuffer(), nBytes, wxT("SendTo"), 3); |
| 1465 | } |
| 1466 | } else { |
| 1467 | sent = CLibUDPSocket::SendTo(addr, buf, nBytes); |
| 1468 | } |
| 1469 | |
| 1470 | return sent; |
| 1471 | } |
| 1472 | |
| 1473 | #endif // CLIENT_GUI |
| 1474 | |
| 1475 | /******************************************************************************/ |
| 1476 | // File_checked_for_headers |