Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 1999-2005 Open Source Telecom Corporation. |
| 2 | // Copyright (C) 2006-2010 David Sugar, Tycho Softworks. |
| 3 | // |
| 4 | // This program is free software; you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation; either version 2 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // This program is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with this program; if not, write to the Free Software |
| 16 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | // |
| 18 | // As a special exception, you may use this file as part of a free software |
| 19 | // library without restriction. Specifically, if other files instantiate |
| 20 | // templates or use macros or inline functions from this file, or you compile |
| 21 | // this file and link it with other files to produce an executable, this |
| 22 | // file does not by itself cause the resulting executable to be covered by |
| 23 | // the GNU General Public License. This exception does not however |
| 24 | // invalidate any other reasons why the executable file might be covered by |
| 25 | // the GNU General Public License. |
| 26 | // |
| 27 | // This exception applies only to the code released under the name GNU |
| 28 | // Common C++. If you copy code from other releases into a copy of GNU |
| 29 | // Common C++, as the General Public License permits, the exception does |
| 30 | // not apply to the code that you add in this way. To avoid misleading |
| 31 | // anyone as to the status of such modified files, you must delete |
| 32 | // this exception notice from them. |
| 33 | // |
| 34 | // If you write modifications of your own for GNU Common C++, it is your choice |
| 35 | // whether to permit this exception to apply to your modifications. |
| 36 | // If you do not wish that, delete this exception notice. |
| 37 | // |
| 38 | |
| 39 | #include <cc++/config.h> |
| 40 | #include <cc++/address.h> |
| 41 | #include <cc++/socket.h> |
| 42 | #include <cc++/file.h> |
| 43 | #include <cc++/thread.h> |
| 44 | #include <cc++/exception.h> |
| 45 | #include <cc++/export.h> |
| 46 | #include <cc++/unix.h> |
| 47 | |
| 48 | #include <cc++/unix.h> |
| 49 | #include <fcntl.h> |
| 50 | #include <cerrno> |
| 51 | #include <cstdlib> |
| 52 | #ifndef WIN32 |
| 53 | #include <netinet/tcp.h> |
| 54 | #include <sys/un.h> |
| 55 | #endif |
| 56 | |
| 57 | #ifdef WIN32 |
| 58 | #include <io.h> |
| 59 | #endif |
| 60 | |
| 61 | #ifdef CCXX_NAMESPACES |
| 62 | namespace ost { |
| 63 | using namespace std; |
| 64 | #endif |
| 65 | |
| 66 | #ifndef WIN32 |
| 67 | |
| 68 | UnixSocket::UnixSocket(const char* pathname, int backlog) : |
| 69 | Socket(AF_UNIX, SOCK_STREAM, 0) |
| 70 | { |
| 71 | struct sockaddr_un addr; |
| 72 | socklen_t len; |
| 73 | unsigned slen = strlen(pathname); |
| 74 | |
| 75 | if(slen > sizeof(addr.sun_path)) |
| 76 | slen = sizeof(addr.sun_path); |
| 77 | |
| 78 | path = NULL; |
| 79 | memset(&addr, 0, sizeof(addr)); |
| 80 | addr.sun_family = AF_UNIX; |
| 81 | memcpy( addr.sun_path, pathname, slen ); |
| 82 | |
| 83 | #ifdef __SUN_LEN |
| 84 | len = sizeof(addr.sun_len) + strlen(addr.sun_path) + sizeof(addr.sun_family) + 1; |
| 85 | addr.sun_len = len; |
| 86 | #else |
| 87 | len = strlen(addr.sun_path) + sizeof(addr.sun_family) + 1; |
| 88 | #endif |
| 89 | remove(pathname); |
| 90 | if(bind(so, (struct sockaddr *)&addr, len)) { |
| 91 | endSocket(); |
| 92 | error(errBindingFailed); |
| 93 | return; |
| 94 | } |
| 95 | |
| 96 | path = new char[slen + 1]; |
| 97 | strcpy(path, pathname); |
| 98 | |
| 99 | if(listen(so, backlog)) { |
| 100 | endSocket(); |
| 101 | error(errBindingFailed); |
| 102 | return; |
| 103 | } |
| 104 | state = BOUND; |
| 105 | } |
| 106 | |
| 107 | |
| 108 | UnixSocket::~UnixSocket() |
| 109 | { |
| 110 | close(); |
| 111 | } |
| 112 | |
| 113 | void UnixSocket::close(void) |
| 114 | { |
| 115 | endSocket(); |
| 116 | if(path) { |
| 117 | remove(path); |
| 118 | delete[] path; |
| 119 | path = NULL; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | UnixStream::UnixStream(UnixSocket &server, int size, bool throwflag, timeout_t to) : |
| 124 | Socket(accept(server.so, NULL, NULL)) ,streambuf() |
| 125 | #ifdef HAVE_OLD_IOSTREAM |
| 126 | ,iostream() |
| 127 | #else |
| 128 | ,iostream((streambuf *)this) |
| 129 | #endif |
| 130 | ,bufsize(0), gbuf(NULL), pbuf(NULL) |
| 131 | { |
| 132 | #ifdef HAVE_OLD_IOSTREAM |
| 133 | init((streambuf *)this); |
| 134 | #endif |
| 135 | |
| 136 | timeout = to; |
| 137 | setError(throwflag); |
| 138 | |
| 139 | allocate(size); |
| 140 | Socket::state = CONNECTED; |
| 141 | } |
| 142 | |
| 143 | UnixStream::UnixStream(const char* pathname, int size, bool throwflag, timeout_t to) : |
| 144 | Socket(AF_UNIX, SOCK_STREAM, 0), streambuf(), |
| 145 | #ifdef HAVE_OLD_IOSTREAM |
| 146 | iostream(), |
| 147 | #else |
| 148 | iostream((streambuf *)this), |
| 149 | #endif |
| 150 | bufsize(0), gbuf(NULL), pbuf(NULL) |
| 151 | { |
| 152 | #ifdef HAVE_OLD_IOSTREAM |
| 153 | init((streambuf *)this); |
| 154 | #endif |
| 155 | timeout = to; |
| 156 | setError(throwflag); |
| 157 | connect(pathname, size); |
| 158 | } |
| 159 | |
| 160 | UnixStream::~UnixStream() |
| 161 | { |
| 162 | endStream(); |
| 163 | } |
| 164 | |
| 165 | void UnixStream::connect(const char* pathname, int size) |
| 166 | { |
| 167 | struct sockaddr_un addr; |
| 168 | socklen_t len; |
| 169 | unsigned slen = strlen(pathname); |
| 170 | |
| 171 | if(slen > sizeof(addr.sun_path)) |
| 172 | slen = sizeof(addr.sun_path); |
| 173 | |
| 174 | memset(&addr, 0, sizeof(addr)); |
| 175 | addr.sun_family = AF_UNIX; |
| 176 | memcpy( addr.sun_path, pathname, slen ); |
| 177 | #ifdef __SUN_LEN |
| 178 | len = sizeof(addr.sun_len) + strlen(addr.sun_path) + sizeof(addr.sun_family) + 1; |
| 179 | addr.sun_len = len; |
| 180 | #else |
| 181 | len = strlen(addr.sun_path) + sizeof(addr.sun_family); |
| 182 | #endif |
| 183 | if(::connect(so, (struct sockaddr *)&addr, len) != 0) { |
| 184 | connectError(); |
| 185 | endSocket(); |
| 186 | return; |
| 187 | } |
| 188 | |
| 189 | allocate(size); |
| 190 | Socket::state = CONNECTED; |
| 191 | } |
| 192 | |
| 193 | UnixStream::UnixStream(bool throwflag) : |
| 194 | Socket(PF_UNIX, SOCK_STREAM, 0), streambuf(), |
| 195 | #ifdef HAVE_OLD_IOSTREAM |
| 196 | iostream(), |
| 197 | #else |
| 198 | iostream((streambuf *)this), |
| 199 | #endif |
| 200 | timeout(0), bufsize(0), gbuf(NULL), pbuf(NULL) |
| 201 | { |
| 202 | #ifdef HAVE_OLD_IOSTREAM |
| 203 | init((streambuf *)this); |
| 204 | #endif |
| 205 | setError(throwflag); |
| 206 | } |
| 207 | |
| 208 | UnixStream::UnixStream(const UnixStream &source) : |
| 209 | Socket(dup(source.so)), streambuf(), |
| 210 | #ifdef HAVE_OLD_IOSTREAM |
| 211 | iostream() |
| 212 | #else |
| 213 | iostream((streambuf *)this) |
| 214 | #endif |
| 215 | { |
| 216 | #ifdef HAVE_OLD_IOSTREAM |
| 217 | init((streambuf *)this); |
| 218 | #endif |
| 219 | bufsize = source.bufsize; |
| 220 | allocate(bufsize); |
| 221 | } |
| 222 | |
| 223 | void UnixStream::endStream(void) |
| 224 | { |
| 225 | if(bufsize) |
| 226 | sync(); |
| 227 | |
| 228 | if(gbuf) |
| 229 | delete[] gbuf; |
| 230 | if(pbuf) |
| 231 | delete[] pbuf; |
| 232 | gbuf = pbuf = NULL; |
| 233 | bufsize = 0; |
| 234 | endSocket(); |
| 235 | } |
| 236 | |
| 237 | void UnixStream::allocate(int size) |
| 238 | { |
| 239 | if(size < 2) { |
| 240 | bufsize = 1; |
| 241 | return; |
| 242 | } |
| 243 | |
| 244 | gbuf = new char[size]; |
| 245 | pbuf = new char[size]; |
| 246 | if(!pbuf || !gbuf) { |
| 247 | error(errResourceFailure); |
| 248 | return; |
| 249 | } |
| 250 | bufsize = size; |
| 251 | clear(); |
| 252 | |
| 253 | #if (defined(__GNUC__) && (__GNUC__ < 3)) && !defined(WIN32) && !defined(STLPORT) |
| 254 | setb(gbuf, gbuf + size, 0); |
| 255 | #endif |
| 256 | setg(gbuf, gbuf + size, gbuf + size); |
| 257 | setp(pbuf, pbuf + size); |
| 258 | } |
| 259 | |
| 260 | int UnixStream::doallocate() |
| 261 | { |
| 262 | if(bufsize) |
| 263 | return 0; |
| 264 | |
| 265 | allocate(1); |
| 266 | return 1; |
| 267 | } |
| 268 | |
| 269 | int UnixStream::uflow(void) |
| 270 | { |
| 271 | int ret = underflow(); |
| 272 | |
| 273 | if (ret == EOF) |
| 274 | return EOF; |
| 275 | |
| 276 | if (bufsize != 1) |
| 277 | gbump(1); |
| 278 | |
| 279 | return ret; |
| 280 | } |
| 281 | |
| 282 | int UnixStream::underflow(void) |
| 283 | { |
| 284 | int rlen = 1; |
| 285 | unsigned char ch; |
| 286 | |
| 287 | if(bufsize == 1) { |
| 288 | if(Socket::state == STREAM) |
| 289 | rlen = ::read(so, (char *)&ch, 1); |
| 290 | else if(timeout && !Socket::isPending(pendingInput, timeout)) { |
| 291 | clear(ios::failbit | rdstate()); |
| 292 | error(errTimeout); |
| 293 | return EOF; |
| 294 | } |
| 295 | else |
| 296 | rlen = ::recv(so, (char *)&ch, 1, 0); |
| 297 | if(rlen < 1) { |
| 298 | if(rlen < 0) { |
| 299 | clear(ios::failbit | rdstate()); |
| 300 | error(errInput); |
| 301 | } |
| 302 | return EOF; |
| 303 | } |
| 304 | return ch; |
| 305 | } |
| 306 | |
| 307 | if(!gptr()) |
| 308 | return EOF; |
| 309 | |
| 310 | if(gptr() < egptr()) |
| 311 | return (unsigned char)*gptr(); |
| 312 | |
| 313 | rlen = (gbuf + bufsize) - eback(); |
| 314 | if(Socket::state == STREAM) |
| 315 | rlen = ::read(so, (char *)eback(), rlen); |
| 316 | else if(timeout && !Socket::isPending(pendingInput, timeout)) { |
| 317 | clear(ios::failbit | rdstate()); |
| 318 | error(errTimeout); |
| 319 | return EOF; |
| 320 | } |
| 321 | else |
| 322 | rlen = ::recv(so, (char *)eback(), rlen, 0); |
| 323 | if(rlen < 1) { |
| 324 | if(rlen < 0) { |
| 325 | clear(ios::failbit | rdstate()); |
| 326 | error(errInput); |
| 327 | } |
| 328 | return EOF; |
| 329 | } |
| 330 | |
| 331 | setg(eback(), eback(), eback() + rlen); |
| 332 | return (unsigned char) *gptr(); |
| 333 | } |
| 334 | |
| 335 | bool UnixStream::isPending(Pending pending, timeout_t timeout) |
| 336 | { |
| 337 | if(pending == pendingInput && in_avail()) |
| 338 | return true; |
| 339 | else if(pending == pendingOutput) |
| 340 | flush(); |
| 341 | |
| 342 | return Socket::isPending(pending, timeout); |
| 343 | } |
| 344 | |
| 345 | int UnixStream::sync(void) |
| 346 | { |
| 347 | overflow(EOF); |
| 348 | setg(gbuf, gbuf + bufsize, gbuf + bufsize); |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | int UnixStream::overflow(int c) |
| 353 | { |
| 354 | unsigned char ch; |
| 355 | int rlen, req; |
| 356 | |
| 357 | if(bufsize == 1) { |
| 358 | if(c == EOF) |
| 359 | return 0; |
| 360 | |
| 361 | ch = (unsigned char)(c); |
| 362 | if(Socket::state == STREAM) |
| 363 | rlen = ::write(so, (const char *)&ch, 1); |
| 364 | else |
| 365 | rlen = ::send(so, (const char *)&ch, 1, 0); |
| 366 | if(rlen < 1) { |
| 367 | if(rlen < 0) { |
| 368 | clear(ios::failbit | rdstate()); |
| 369 | error(errOutput); |
| 370 | } |
| 371 | return EOF; |
| 372 | } |
| 373 | else |
| 374 | return c; |
| 375 | } |
| 376 | |
| 377 | if(!pbase()) |
| 378 | return EOF; |
| 379 | |
| 380 | req = pptr() - pbase(); |
| 381 | if(req) { |
| 382 | if(Socket::state == STREAM) |
| 383 | rlen = ::write(so, (const char *)pbase(), req); |
| 384 | else |
| 385 | rlen = ::send(so, (const char *)pbase(), req, 0); |
| 386 | if(rlen < 1) { |
| 387 | if(rlen < 0) { |
| 388 | clear(ios::failbit | rdstate()); |
| 389 | error(errOutput); |
| 390 | } |
| 391 | return EOF; |
| 392 | } |
| 393 | req -= rlen; |
| 394 | } |
| 395 | |
| 396 | // if write "partial", rebuffer remainder |
| 397 | |
| 398 | if(req) |
| 399 | memcpy(pptr(), pptr() + rlen, req); |
| 400 | setp(pbuf + req, pbuf + bufsize); |
| 401 | |
| 402 | if(c != EOF) { |
| 403 | *pptr() = (unsigned char)c; |
| 404 | pbump(1); |
| 405 | } |
| 406 | return c; |
| 407 | } |
| 408 | |
| 409 | unixstream::unixstream() : |
| 410 | UnixStream() |
| 411 | { |
| 412 | setError(false); /* no exceptions */ |
| 413 | } |
| 414 | |
| 415 | unixstream::unixstream(const char *pathname, int buf) : |
| 416 | UnixStream() |
| 417 | { |
| 418 | setError(false); |
| 419 | open(pathname, buf); |
| 420 | } |
| 421 | |
| 422 | unixstream::unixstream(UnixSocket &server, int buf) : |
| 423 | UnixStream() |
| 424 | { |
| 425 | setError(false); |
| 426 | open(server, buf); |
| 427 | } |
| 428 | |
| 429 | bool unixstream::operator!() const |
| 430 | { |
| 431 | return (Socket::state != CONNECTED) ? true : false; |
| 432 | } |
| 433 | |
| 434 | void unixstream::open(UnixSocket &unixsock, int buf) |
| 435 | { |
| 436 | endStream(); |
| 437 | so = accept(unixsock.so, NULL, NULL); |
| 438 | if(so == INVALID_SOCKET) |
| 439 | return; |
| 440 | |
| 441 | allocate(buf); |
| 442 | Socket::state = CONNECTED; |
| 443 | } |
| 444 | |
| 445 | void unixstream::close(void) |
| 446 | { |
| 447 | if(Socket::state == AVAILABLE) |
| 448 | return; |
| 449 | |
| 450 | endStream(); |
| 451 | so = socket(AF_UNIX, SOCK_STREAM, 0); |
| 452 | if(so != INVALID_SOCKET) |
| 453 | Socket::state = AVAILABLE; |
| 454 | } |
| 455 | |
| 456 | UnixSession::UnixSession(const char* pathname, int size, int pri, int stack) : |
| 457 | Thread(pri, stack), UnixStream() |
| 458 | { |
| 459 | struct sockaddr_un addr; |
| 460 | unsigned slen = strlen(pathname); |
| 461 | |
| 462 | if(slen > sizeof(addr.sun_path)) |
| 463 | slen = sizeof(addr.sun_path); |
| 464 | socklen_t len; |
| 465 | setCompletion(false); |
| 466 | setError(false); |
| 467 | allocate(size); |
| 468 | |
| 469 | memset(&addr, 0, sizeof(addr)); |
| 470 | addr.sun_family = AF_UNIX; |
| 471 | memcpy( addr.sun_path, pathname, slen ); |
| 472 | |
| 473 | #ifdef __SUN_LEN |
| 474 | len = sizeof(addr.sun_len) + strlen(addr.sun_path) + sizeof(addr.sun_family) + 1; |
| 475 | addr.sun_len = len; |
| 476 | #else |
| 477 | len = strlen(addr.sun_path) + sizeof(addr.sun_family); |
| 478 | #endif |
| 479 | if(::connect(so, (struct sockaddr *)&addr, len ) != 0) { |
| 480 | #ifdef WIN32 |
| 481 | if( WSAGetLastError() == WAEISCONN ) |
| 482 | #else |
| 483 | if( EINPROGRESS == errno ) |
| 484 | #endif |
| 485 | { |
| 486 | Socket::state = CONNECTING; |
| 487 | } |
| 488 | else { |
| 489 | endSocket(); |
| 490 | Socket::state = INITIAL; |
| 491 | } |
| 492 | return; |
| 493 | } |
| 494 | |
| 495 | setCompletion(true); |
| 496 | Socket::state = CONNECTED; |
| 497 | } |
| 498 | |
| 499 | |
| 500 | UnixSession::UnixSession(UnixSocket &s,int size, int pri, int stack) : |
| 501 | Thread(pri, stack), UnixStream(s, size) |
| 502 | { |
| 503 | setCompletion(true); |
| 504 | setError(false); |
| 505 | } |
| 506 | |
| 507 | UnixSession::~UnixSession() |
| 508 | { |
| 509 | terminate(); |
| 510 | endStream(); |
| 511 | } |
| 512 | |
| 513 | int UnixSession::waitConnection(timeout_t timeout) |
| 514 | { |
| 515 | long sockopt = 0; |
| 516 | socklen_t len = sizeof(sockopt); |
| 517 | |
| 518 | switch(Socket::state) { |
| 519 | case INITIAL: |
| 520 | return -1; |
| 521 | case CONNECTED: |
| 522 | break; |
| 523 | case CONNECTING: |
| 524 | if(!Socket::isPending(pendingOutput, timeout)) { |
| 525 | endSocket(); |
| 526 | Socket::state = INITIAL; |
| 527 | return -1; |
| 528 | } |
| 529 | |
| 530 | getsockopt(so, SOL_SOCKET, SO_ERROR, (char *)&sockopt, &len); |
| 531 | if(sockopt) { |
| 532 | endSocket(); |
| 533 | Socket::state = INITIAL; |
| 534 | return -1; |
| 535 | } |
| 536 | case AVAILABLE: |
| 537 | case BOUND: |
| 538 | case STREAM: |
| 539 | break; |
| 540 | } |
| 541 | Socket::state = CONNECTED; |
| 542 | return 0; |
| 543 | } |
| 544 | |
| 545 | void UnixSession::initial(void) |
| 546 | { |
| 547 | if(waitConnection(60000)) |
| 548 | exit(); |
| 549 | } |
| 550 | |
| 551 | #endif // ndef WIN32 |
| 552 | #ifdef CCXX_NAMESPACES |
| 553 | } |
| 554 | #endif |