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00019 #include <config.h>
00020
00021 #ifdef HAVE_SYS_TIME_H
00022 #include <sys/time.h>
00023 #endif
00024
00025 #include <qfile.h>
00026 #include <qstring.h>
00027 #include <qmap.h>
00028
00029 #include <klocale.h>
00030 #include <kdebug.h>
00031 #include "klibloader.h"
00032 #include <kconfig.h>
00033 #include <kapplication.h>
00034
00035 #include <sys/types.h>
00036 #include <sys/socket.h>
00037
00038 #include <unistd.h>
00039
00040 #include "ksocks.h"
00041
00042
00043 enum SymbolKeys {
00044 S_SOCKSinit = 0,
00045 S_connect = 1,
00046 S_read = 2,
00047 S_write = 3,
00048 S_recvfrom = 4,
00049 S_sendto = 5,
00050 S_recv = 6,
00051 S_send = 7,
00052 S_getsockname = 8,
00053 S_getpeername = 9,
00054 S_accept = 10,
00055 S_select = 11,
00056 S_listen = 12,
00057 S_bind = 13
00058 };
00059
00060
00061 extern "C" {
00062
00063 static int (*F_SOCKSinit) (char *) = 0L;
00064 static int (*F_connect) (int, const struct sockaddr *, ksocklen_t) = 0L;
00065 static signed long int (*F_read) (int, void *, unsigned long int) = 0L;
00066 static signed long int (*F_write) (int, const void *, unsigned long int) = 0L;
00067 static int (*F_recvfrom) (int, void *, unsigned long int, int, struct sockaddr *,
00068 ksocklen_t *) = 0L;
00069 static int (*F_sendto) (int, const void *, unsigned long int, int,
00070 const struct sockaddr *, ksocklen_t) = 0L;
00071 static int (*F_recv) (int, void *, unsigned long int, int) = 0L;
00072 static int (*F_send) (int, const void *, unsigned long int, int) = 0L;
00073 static int (*F_getsockname) (int, struct sockaddr *, ksocklen_t *) = 0L;
00074 static int (*F_getpeername) (int, struct sockaddr *, ksocklen_t *) = 0L;
00075 static int (*F_accept) (int, struct sockaddr *, ksocklen_t *) = 0L;
00076 static int (*F_select) (int, fd_set *, fd_set *, fd_set *,
00077 struct timeval *) = 0L;
00078 static int (*F_listen) (int, int) = 0L;
00079 static int (*F_bind) (int, struct sockaddr *, ksocklen_t) = 0L;
00080 }
00081
00082
00083 class KSocksTable {
00084 public:
00085 KSocksTable();
00086 virtual ~KSocksTable();
00087
00088
00089 QMap<SymbolKeys,QString> symbols;
00090
00091 QString myname;
00092 bool hasWorkingAsyncConnect;
00093 };
00094
00095
00096 KSocksTable::KSocksTable() : myname("Unknown"), hasWorkingAsyncConnect(true) {
00097 }
00098
00099 KSocksTable::~KSocksTable() {
00100 }
00101
00102
00103
00104
00105
00106
00107
00108
00109
00110
00111
00112
00113
00114
00115
00116
00117
00121
00122
00123
00124
00125
00126
00127 class KNECSocksTable : public KSocksTable {
00128 public:
00129 KNECSocksTable();
00130 virtual ~KNECSocksTable();
00131 };
00132
00133
00134 KNECSocksTable::KNECSocksTable() : KSocksTable() {
00135 myname = i18n("NEC SOCKS client");
00136 symbols.insert(S_SOCKSinit, "SOCKSinit");
00137 symbols.insert(S_connect, "connect");
00138 symbols.insert(S_read, "read");
00139 symbols.insert(S_write, "write");
00140 symbols.insert(S_recvfrom, "recvfrom");
00141 symbols.insert(S_sendto, "sendto");
00142 symbols.insert(S_recv, "recv");
00143 symbols.insert(S_send, "send");
00144 symbols.insert(S_getsockname, "getsockname");
00145 symbols.insert(S_getpeername, "getpeername");
00146 symbols.insert(S_accept, "accept");
00147 symbols.insert(S_select, "select");
00148 symbols.insert(S_listen, "listen");
00149 symbols.insert(S_bind, "bind");
00150 }
00151
00152 KNECSocksTable::~KNECSocksTable() {
00153 }
00154
00155
00156
00157
00158
00159
00160
00161
00162 class KDanteSocksTable : public KSocksTable {
00163 public:
00164 KDanteSocksTable();
00165 virtual ~KDanteSocksTable();
00166 };
00167
00168 KDanteSocksTable::KDanteSocksTable() : KSocksTable() {
00169 hasWorkingAsyncConnect = false;
00170 myname = i18n("Dante SOCKS client");
00171 symbols.insert(S_SOCKSinit, "SOCKSinit");
00172 symbols.insert(S_connect, "Rconnect");
00173 symbols.insert(S_read, "Rread");
00174 symbols.insert(S_write, "Rwrite");
00175 symbols.insert(S_recvfrom, "Rrecvfrom");
00176 symbols.insert(S_sendto, "Rsendto");
00177 symbols.insert(S_recv, "Rrecv");
00178 symbols.insert(S_send, "Rsend");
00179 symbols.insert(S_getsockname, "Rgetsockname");
00180 symbols.insert(S_getpeername, "Rgetpeername");
00181 symbols.insert(S_accept, "Raccept");
00182 symbols.insert(S_select, "Rselect");
00183 symbols.insert(S_listen, "Rlisten");
00184 symbols.insert(S_bind, "Rbind");
00185 }
00186
00187
00188 KDanteSocksTable::~KDanteSocksTable() {
00189 }
00190
00191
00192
00196
00197
00198 KSocks *KSocks::_me = 0;
00199 bool KSocks::_disabled = false;
00200
00201 void KSocks::disable()
00202 {
00203 if (!_me)
00204 _disabled = true;
00205 }
00206
00207 KSocks *KSocks::self() {
00208
00209 if (!_me) {
00210 if (kapp) {
00211 KConfigGroup cfg(kapp->config(), "Socks");
00212 _me = new KSocks(&cfg);
00213 } else {
00214 _disabled = true;
00215 _me = new KSocks(0);
00216 }
00217 }
00218 return _me;
00219 }
00220
00221 void KSocks::setConfig(KConfigBase *config)
00222 {
00223
00224
00225 if (_me && _disabled) {
00226 delete _me;
00227 _me = 0;
00228 _disabled = false;
00229 }
00230 if (!_me)
00231 _me = new KSocks(config);
00232 }
00233
00234 bool KSocks::activated() { return (_me != 0L); }
00235
00236
00237 KSocks::KSocks(KConfigBase *config) : _socksLib(0L), _st(0L) {
00238 _hasSocks = false;
00239 _useSocks = false;
00240
00241 if (!config)
00242 return;
00243
00244 if (!(config->readBoolEntry("SOCKS_enable", false))) {
00245 _disabled = true;
00246 }
00247
00248 if (_disabled)
00249 return;
00250
00251 _libPaths << ""
00252 << "/usr/lib/"
00253 << "/usr/local/lib/"
00254 << "/usr/local/socks5/lib/"
00255 << "/opt/socks5/lib/";
00256 _libNames << "libsocks.so"
00257 << "libsocks5.so"
00258 << "libsocks5_sh.so";
00259
00260
00261 QStringList newlibs = config->readListEntry("SOCKS_lib_path");
00262
00263 for (QStringList::Iterator it = newlibs.begin();
00264 it != newlibs.end();
00265 ++it) {
00266 QString thisone = *it;
00267 if (thisone[thisone.length()-1] != '/') thisone += "/";
00268 _libPaths << thisone;
00269 kdDebug(171) << "KSocks added a new library path: " << thisone << endl;
00270 }
00271
00272
00273 KLibLoader *ll = KLibLoader::self();
00274
00275
00276 int _meth = config->readNumEntry("SOCKS_method", 1);
00277
00278
00279
00280
00281
00282 if (_meth == 4) {
00283 _socksLib = ll->library(config->readPathEntry("SOCKS_lib", "").latin1());
00284 if (_socksLib && _socksLib->symbol("Rconnect")) {
00285 _st = new KDanteSocksTable;
00286 _useSocks = true;
00287 _hasSocks = true;
00288 } else if (_socksLib && _socksLib->symbol("connect")) {
00289 _st = new KNECSocksTable;
00290 _useSocks = true;
00291 _hasSocks = true;
00292 } else if (_socksLib) {
00293 _socksLib->unload();
00294 _socksLib = 0L;
00295 }
00296 } else
00297 for (QStringList::Iterator pit = _libPaths.begin();
00298 !_hasSocks && pit != _libPaths.end();
00299 ++pit)
00300 for (QStringList::Iterator it = _libNames.begin();
00301 it != _libNames.end();
00302 ++it) {
00303 _socksLib = ll->library((*pit + *it).latin1());
00304 if (_socksLib) {
00305 if ((_meth == 1 || _meth == 2) &&
00306 _socksLib->symbol("S5LogShowThreadIDS") != 0L) {
00307 kdDebug(171) << "Found NEC SOCKS" << endl;
00308 _st = new KNECSocksTable;
00309 _useSocks = true;
00310 _hasSocks = true;
00311 break;
00312 } else if ((_meth == 1 || _meth == 3) &&
00313 _socksLib->symbol("sockaddr2ruleaddress") != 0L) {
00314 kdDebug(171) << "Found Dante SOCKS" << endl;
00315 _st = new KDanteSocksTable;
00316 _useSocks = true;
00317 _hasSocks = true;
00318 break;
00319 } else {
00320 _socksLib->unload();
00321 _socksLib = 0L;
00322 }
00323 }
00324 }
00325
00326
00327 if (_st) {
00328 for (QMap<SymbolKeys,QString>::Iterator it = _st->symbols.begin();
00329 it != _st->symbols.end();
00330 ++it) {
00331 switch(it.key()) {
00332 case S_SOCKSinit:
00333 F_SOCKSinit = (int (*)(char *))
00334 _socksLib->symbol(it.data().latin1());
00335 break;
00336 case S_connect:
00337 F_connect = (int (*)(int, const struct sockaddr *, ksocklen_t))
00338 _socksLib->symbol(it.data().latin1());
00339 break;
00340 case S_read:
00341 F_read = (signed long int (*)(int, void *, unsigned long int))
00342 _socksLib->symbol(it.data().latin1());
00343 break;
00344 case S_write:
00345 F_write = (signed long int (*)(int, const void *, unsigned long int))
00346 _socksLib->symbol(it.data().latin1());
00347 break;
00348 case S_recvfrom:
00349 F_recvfrom = (int (*)(int, void *, unsigned long int, int,
00350 struct sockaddr *, ksocklen_t *))
00351 _socksLib->symbol(it.data().latin1());
00352 break;
00353 case S_sendto:
00354 F_sendto = (int (*)(int, const void *, unsigned long int, int,
00355 const struct sockaddr *, ksocklen_t))
00356 _socksLib->symbol(it.data().latin1());
00357 break;
00358 case S_recv:
00359 F_recv = (int (*)(int, void *, unsigned long int, int))
00360 _socksLib->symbol(it.data().latin1());
00361 break;
00362 case S_send:
00363 F_send = (int (*)(int, const void *, unsigned long int, int))
00364 _socksLib->symbol(it.data().latin1());
00365 break;
00366 case S_getsockname:
00367 F_getsockname = (int (*)(int, struct sockaddr *, ksocklen_t *))
00368 _socksLib->symbol(it.data().latin1());
00369 break;
00370 case S_getpeername:
00371 F_getpeername = (int (*)(int, struct sockaddr *, ksocklen_t *))
00372 _socksLib->symbol(it.data().latin1());
00373 break;
00374 case S_accept:
00375 F_accept = (int (*)(int, struct sockaddr *, ksocklen_t *))
00376 _socksLib->symbol(it.data().latin1());
00377 break;
00378 case S_select:
00379 F_select = (int (*)(int, fd_set *, fd_set *, fd_set *, struct timeval *))
00380 _socksLib->symbol(it.data().latin1());
00381 break;
00382 case S_listen:
00383 F_listen = (int (*)(int, int))
00384 _socksLib->symbol(it.data().latin1());
00385 break;
00386 case S_bind:
00387 F_bind = (int (*)(int, struct sockaddr *, ksocklen_t))
00388 _socksLib->symbol(it.data().latin1());
00389 break;
00390 default:
00391 kdDebug(171) << "KSocks got a symbol it doesn't know about!" << endl;
00392 break;
00393 }
00394 }
00395
00396
00397 if (F_SOCKSinit) {
00398 int rc = (*F_SOCKSinit)((char *)"KDE");
00399 if (rc != 0)
00400 stopSocks();
00401 else kdDebug(171) << "SOCKS has been activated!" << endl;
00402 } else {
00403 stopSocks();
00404 }
00405 }
00406 }
00407
00408
00409 KSocks::~KSocks() {
00410 stopSocks();
00411 _me = 0;
00412 }
00413
00414 void KSocks::die() {
00415 if (_me == this) {
00416 _me = 0;
00417 delete this;
00418 }
00419 }
00420
00421 void KSocks::stopSocks() {
00422 if (_hasSocks) {
00423
00424
00425 _useSocks = false;
00426 _hasSocks = false;
00427 if (_socksLib) {
00428 _socksLib->unload();
00429 _socksLib = 0L;
00430 }
00431 delete _st;
00432 _st = 0L;
00433 }
00434 }
00435
00436
00437 bool KSocks::usingSocks() {
00438 return _useSocks;
00439 }
00440
00441
00442 bool KSocks::hasSocks() {
00443 return _hasSocks;
00444 }
00445
00446
00447 void KSocks::disableSocks() {
00448 _useSocks = false;
00449 }
00450
00451
00452 void KSocks::enableSocks() {
00453 if (_hasSocks)
00454 _useSocks = true;
00455 }
00456
00457 bool KSocks::hasWorkingAsyncConnect()
00458 {
00459 return (_useSocks && _st) ? _st->hasWorkingAsyncConnect : true;
00460 }
00461
00462
00463
00464
00465
00466
00467
00468 int KSocks::connect (int sockfd, const sockaddr *serv_addr,
00469 ksocklen_t addrlen) {
00470 if (_useSocks && F_connect)
00471 return (*F_connect)(sockfd, serv_addr, addrlen);
00472 else return ::connect(sockfd, (sockaddr*) serv_addr, (socklen_t)addrlen);
00473 }
00474
00475
00476 signed long int KSocks::read (int fd, void *buf, unsigned long int count) {
00477 if (_useSocks && F_read)
00478 return (*F_read)(fd, buf, count);
00479 else return ::read(fd, buf, count);
00480 }
00481
00482
00483 signed long int KSocks::write (int fd, const void *buf, unsigned long int count) {
00484 if (_useSocks && F_write)
00485 return (*F_write)(fd, buf, count);
00486 else return ::write(fd, buf, count);
00487 }
00488
00489
00490 int KSocks::recvfrom (int s, void *buf, unsigned long int len, int flags,
00491 sockaddr *from, ksocklen_t *fromlen) {
00492 if (_useSocks && F_recvfrom) {
00493 return (*F_recvfrom)(s, buf, len, flags, from, fromlen);
00494 } else {
00495 socklen_t casted_len = (socklen_t) *fromlen;
00496 int rc = ::recvfrom(s, (char*) buf, len, flags, from, &casted_len);
00497 *fromlen = casted_len;
00498 return rc;
00499 }
00500 }
00501
00502
00503 int KSocks::sendto (int s, const void *msg, unsigned long int len, int flags,
00504 const sockaddr *to, ksocklen_t tolen) {
00505 if (_useSocks && F_sendto)
00506 return (*F_sendto)(s, msg, len, flags, to, tolen);
00507 else return ::sendto(s, (char*) msg, len, flags, to, (socklen_t)tolen);
00508 }
00509
00510
00511 int KSocks::recv (int s, void *buf, unsigned long int len, int flags) {
00512 if (_useSocks && F_recv)
00513 return (*F_recv)(s, buf, len, flags);
00514 else return ::recv(s, (char*) buf, len, flags);
00515 }
00516
00517
00518 int KSocks::send (int s, const void *msg, unsigned long int len, int flags) {
00519 if (_useSocks && F_send)
00520 return (*F_send)(s, msg, len, flags);
00521 else return ::send(s, (char*) msg, len, flags);
00522 }
00523
00524
00525 int KSocks::getsockname (int s, sockaddr *name, ksocklen_t *namelen) {
00526 if (_useSocks && F_getsockname) {
00527 return (*F_getsockname)(s, name, namelen);
00528 } else {
00529 socklen_t casted_len = *namelen;
00530 int rc = ::getsockname(s, name, &casted_len);
00531 *namelen = casted_len;
00532 return rc;
00533 }
00534 }
00535
00536
00537 int KSocks::getpeername (int s, sockaddr *name, ksocklen_t *namelen) {
00538 if (_useSocks && F_getpeername) {
00539 return (*F_getpeername)(s, name, namelen);
00540 } else {
00541 socklen_t casted_len = *namelen;
00542 int rc = ::getpeername(s, name, &casted_len);
00543 *namelen = casted_len;
00544 return rc;
00545 }
00546 }
00547
00548
00549 int KSocks::accept (int s, sockaddr *addr, ksocklen_t *addrlen) {
00550 if (_useSocks && F_accept) {
00551 return (*F_accept)(s, addr, addrlen);
00552 } else {
00553 socklen_t casted_len = *addrlen;
00554 int rc = ::accept(s, addr, &casted_len);
00555 *addrlen = casted_len;
00556 return rc;
00557 }
00558 }
00559
00560
00561 int KSocks::select (int n, fd_set *readfds, fd_set *writefds,
00562 fd_set *exceptfds, struct timeval *timeout) {
00563 if (_useSocks && F_select)
00564 return (*F_select)(n, readfds, writefds, exceptfds, timeout);
00565 else return ::select(n, readfds, writefds, exceptfds, timeout);
00566 }
00567
00568
00569 int KSocks::listen (int s, int backlog) {
00570 if (_useSocks && F_listen)
00571 return (*F_listen)(s, backlog);
00572 else return ::listen(s, backlog);
00573 }
00574
00575
00576 int KSocks::bind (int sockfd, sockaddr *my_addr, ksocklen_t addrlen) {
00577 if (_useSocks && F_bind)
00578 return (*F_bind)(sockfd, my_addr, addrlen);
00579 else return ::bind(sockfd, my_addr, (socklen_t)addrlen);
00580 }
00581
00582
00583