| 1 | /* ------------------------------------------------------------------------- |
| 2 | * Project: GSocket (Generic Socket) for WX |
| 3 | * Name: gsocket.c |
| 4 | * Copyright: (c) Guilhem Lavaux |
| 5 | * Licence: wxWindows Licence |
| 6 | * Authors: David Elliott (C++ conversion, maintainer) |
| 7 | * Guilhem Lavaux, |
| 8 | * Guillermo Rodriguez Garcia <guille@iies.es> |
| 9 | * Purpose: GSocket main Unix and OS/2 file |
| 10 | * Licence: The wxWindows licence |
| 11 | * CVSID: $Id$ |
| 12 | * ------------------------------------------------------------------------- |
| 13 | */ |
| 14 | |
| 15 | #if defined(__WATCOMC__) |
| 16 | #include "wx/wxprec.h" |
| 17 | #include <errno.h> |
| 18 | #include <nerrno.h> |
| 19 | #endif |
| 20 | |
| 21 | #ifndef __GSOCKET_STANDALONE__ |
| 22 | #include "wx/defs.h" |
| 23 | #endif |
| 24 | |
| 25 | #if defined(__VISAGECPP__) |
| 26 | #define BSD_SELECT /* use Berkeley Sockets select */ |
| 27 | #endif |
| 28 | |
| 29 | #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) |
| 30 | |
| 31 | #include <assert.h> |
| 32 | #include <sys/types.h> |
| 33 | #ifdef __VISAGECPP__ |
| 34 | #include <string.h> |
| 35 | #include <sys/time.h> |
| 36 | #include <types.h> |
| 37 | #include <netinet/in.h> |
| 38 | #endif |
| 39 | #include <netdb.h> |
| 40 | #include <sys/ioctl.h> |
| 41 | |
| 42 | #ifdef HAVE_SYS_SELECT_H |
| 43 | # include <sys/select.h> |
| 44 | #endif |
| 45 | |
| 46 | #ifdef __VMS__ |
| 47 | #include <socket.h> |
| 48 | struct sockaddr_un |
| 49 | { |
| 50 | u_char sun_len; /* sockaddr len including null */ |
| 51 | u_char sun_family; /* AF_UNIX */ |
| 52 | char sun_path[108]; /* path name (gag) */ |
| 53 | }; |
| 54 | #else |
| 55 | #include <sys/socket.h> |
| 56 | #include <sys/un.h> |
| 57 | #endif |
| 58 | |
| 59 | #ifndef __VISAGECPP__ |
| 60 | #include <sys/time.h> |
| 61 | #include <netinet/in.h> |
| 62 | #include <arpa/inet.h> |
| 63 | #include <errno.h> |
| 64 | #include <string.h> |
| 65 | #include <unistd.h> |
| 66 | #else |
| 67 | #include <nerrno.h> |
| 68 | # if __IBMCPP__ < 400 |
| 69 | #include <machine/endian.h> |
| 70 | #include <socket.h> |
| 71 | #include <ioctl.h> |
| 72 | #include <select.h> |
| 73 | #include <unistd.h> |
| 74 | |
| 75 | #define EBADF SOCEBADF |
| 76 | |
| 77 | # ifdef min |
| 78 | # undef min |
| 79 | # endif |
| 80 | # else |
| 81 | #include <sys/socket.h> |
| 82 | #include <sys/ioctl.h> |
| 83 | #include <sys/select.h> |
| 84 | |
| 85 | #define close(a) soclose(a) |
| 86 | #define select(a,b,c,d,e) bsdselect(a,b,c,d,e) |
| 87 | int _System bsdselect(int, |
| 88 | struct fd_set *, |
| 89 | struct fd_set *, |
| 90 | struct fd_set *, |
| 91 | struct timeval *); |
| 92 | int _System soclose(int); |
| 93 | # endif |
| 94 | #endif |
| 95 | #ifdef __EMX__ |
| 96 | #include <sys/select.h> |
| 97 | #endif |
| 98 | |
| 99 | #include <stdio.h> |
| 100 | #include <stdlib.h> |
| 101 | #include <stddef.h> |
| 102 | #include <ctype.h> |
| 103 | #ifdef sun |
| 104 | # include <sys/filio.h> |
| 105 | #endif |
| 106 | #ifdef sgi |
| 107 | # include <bstring.h> |
| 108 | #endif |
| 109 | #ifdef _AIX |
| 110 | # include <strings.h> |
| 111 | #endif |
| 112 | #include <signal.h> |
| 113 | |
| 114 | #ifndef WX_SOCKLEN_T |
| 115 | |
| 116 | #ifdef VMS |
| 117 | # define WX_SOCKLEN_T unsigned int |
| 118 | #else |
| 119 | # ifdef __GLIBC__ |
| 120 | # if __GLIBC__ == 2 |
| 121 | # define WX_SOCKLEN_T socklen_t |
| 122 | # endif |
| 123 | # elif defined(__WXMAC__) |
| 124 | # define WX_SOCKLEN_T socklen_t |
| 125 | # else |
| 126 | # define WX_SOCKLEN_T int |
| 127 | # endif |
| 128 | #endif |
| 129 | |
| 130 | #endif /* SOCKLEN_T */ |
| 131 | |
| 132 | #ifndef SOCKOPTLEN_T |
| 133 | #define SOCKOPTLEN_T WX_SOCKLEN_T |
| 134 | #endif |
| 135 | |
| 136 | /* |
| 137 | * MSW defines this, Unices don't. |
| 138 | */ |
| 139 | #ifndef INVALID_SOCKET |
| 140 | #define INVALID_SOCKET -1 |
| 141 | #endif |
| 142 | |
| 143 | /* UnixWare reportedly needs this for FIONBIO definition */ |
| 144 | #ifdef __UNIXWARE__ |
| 145 | #include <sys/filio.h> |
| 146 | #endif |
| 147 | |
| 148 | /* |
| 149 | * INADDR_BROADCAST is identical to INADDR_NONE which is not defined |
| 150 | * on all systems. INADDR_BROADCAST should be fine to indicate an error. |
| 151 | */ |
| 152 | #ifndef INADDR_NONE |
| 153 | #define INADDR_NONE INADDR_BROADCAST |
| 154 | #endif |
| 155 | |
| 156 | #if defined(__VISAGECPP__) || defined(__WATCOMC__) |
| 157 | |
| 158 | #define MASK_SIGNAL() { |
| 159 | #define UNMASK_SIGNAL() } |
| 160 | |
| 161 | #else |
| 162 | extern "C" { typedef void (*wxSigHandler)(int); } |
| 163 | |
| 164 | #define MASK_SIGNAL() \ |
| 165 | { \ |
| 166 | wxSigHandler old_handler = signal(SIGPIPE, SIG_IGN); |
| 167 | |
| 168 | #define UNMASK_SIGNAL() \ |
| 169 | signal(SIGPIPE, old_handler); \ |
| 170 | } |
| 171 | |
| 172 | #endif |
| 173 | |
| 174 | /* If a SIGPIPE is issued by a socket call on a remotely closed socket, |
| 175 | the program will "crash" unless it explicitly handles the SIGPIPE. |
| 176 | By using MSG_NOSIGNAL, the SIGPIPE is suppressed. Later, we will |
| 177 | use SO_NOSIGPIPE (if available), the BSD equivalent. */ |
| 178 | #ifdef MSG_NOSIGNAL |
| 179 | # define GSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL |
| 180 | #else /* MSG_NOSIGNAL not available (FreeBSD including OS X) */ |
| 181 | # define GSOCKET_MSG_NOSIGNAL 0 |
| 182 | #endif /* MSG_NOSIGNAL */ |
| 183 | |
| 184 | #ifndef __GSOCKET_STANDALONE__ |
| 185 | # include "wx/unix/gsockunx.h" |
| 186 | # include "wx/unix/private.h" |
| 187 | # include "wx/gsocket.h" |
| 188 | #if wxUSE_THREADS && (defined(HAVE_GETHOSTBYNAME) || defined(HAVE_GETSERVBYNAME)) |
| 189 | # include "wx/thread.h" |
| 190 | #endif |
| 191 | #else |
| 192 | # include "gsockunx.h" |
| 193 | # include "gsocket.h" |
| 194 | # ifndef WXUNUSED |
| 195 | # define WXUNUSED(x) |
| 196 | # endif |
| 197 | #endif /* __GSOCKET_STANDALONE__ */ |
| 198 | |
| 199 | #if defined(HAVE_GETHOSTBYNAME) |
| 200 | static struct hostent * deepCopyHostent(struct hostent *h, |
| 201 | const struct hostent *he, |
| 202 | char *buffer, int size, int *err) |
| 203 | { |
| 204 | /* copy old structure */ |
| 205 | memcpy(h, he, sizeof(struct hostent)); |
| 206 | |
| 207 | /* copy name */ |
| 208 | int len = strlen(h->h_name); |
| 209 | if (len > size) |
| 210 | { |
| 211 | *err = ENOMEM; |
| 212 | return NULL; |
| 213 | } |
| 214 | memcpy(buffer, h->h_name, len); |
| 215 | buffer[len] = '\0'; |
| 216 | h->h_name = buffer; |
| 217 | |
| 218 | /* track position in the buffer */ |
| 219 | int pos = len + 1; |
| 220 | |
| 221 | /* reuse len to store address length */ |
| 222 | len = h->h_length; |
| 223 | |
| 224 | /* ensure pointer alignment */ |
| 225 | unsigned int misalign = sizeof(char *) - pos%sizeof(char *); |
| 226 | if(misalign < sizeof(char *)) |
| 227 | pos += misalign; |
| 228 | |
| 229 | /* leave space for pointer list */ |
| 230 | char **p = h->h_addr_list, **q; |
| 231 | char **h_addr_list = (char **)(buffer + pos); |
| 232 | while(*(p++) != 0) |
| 233 | pos += sizeof(char *); |
| 234 | |
| 235 | /* copy addresses and fill new pointer list */ |
| 236 | for (p = h->h_addr_list, q = h_addr_list; *p != 0; p++, q++) |
| 237 | { |
| 238 | if (size < pos + len) |
| 239 | { |
| 240 | *err = ENOMEM; |
| 241 | return NULL; |
| 242 | } |
| 243 | memcpy(buffer + pos, *p, len); /* copy content */ |
| 244 | *q = buffer + pos; /* set copied pointer to copied content */ |
| 245 | pos += len; |
| 246 | } |
| 247 | *++q = 0; /* null terminate the pointer list */ |
| 248 | h->h_addr_list = h_addr_list; /* copy pointer to pointers */ |
| 249 | |
| 250 | /* ensure word alignment of pointers */ |
| 251 | misalign = sizeof(char *) - pos%sizeof(char *); |
| 252 | if(misalign < sizeof(char *)) |
| 253 | pos += misalign; |
| 254 | |
| 255 | /* leave space for pointer list */ |
| 256 | p = h->h_aliases; |
| 257 | char **h_aliases = (char **)(buffer + pos); |
| 258 | while(*(p++) != 0) |
| 259 | pos += sizeof(char *); |
| 260 | |
| 261 | /* copy aliases and fill new pointer list */ |
| 262 | for (p = h->h_aliases, q = h_aliases; *p != 0; p++, q++) |
| 263 | { |
| 264 | len = strlen(*p); |
| 265 | if (size <= pos + len) |
| 266 | { |
| 267 | *err = ENOMEM; |
| 268 | return NULL; |
| 269 | } |
| 270 | memcpy(buffer + pos, *p, len); /* copy content */ |
| 271 | buffer[pos + len] = '\0'; |
| 272 | *q = buffer + pos; /* set copied pointer to copied content */ |
| 273 | pos += len + 1; |
| 274 | } |
| 275 | *++q = 0; /* null terminate the pointer list */ |
| 276 | h->h_aliases = h_aliases; /* copy pointer to pointers */ |
| 277 | |
| 278 | return h; |
| 279 | } |
| 280 | #endif |
| 281 | |
| 282 | #if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS |
| 283 | static wxMutex nameLock; |
| 284 | #endif |
| 285 | struct hostent * wxGethostbyname_r(const char *hostname, struct hostent *h, |
| 286 | void *buffer, int size, int *err) |
| 287 | |
| 288 | { |
| 289 | struct hostent *he = NULL; |
| 290 | *err = 0; |
| 291 | #if defined(HAVE_FUNC_GETHOSTBYNAME_R_6) |
| 292 | if (gethostbyname_r(hostname, h, (char*)buffer, size, &he, err)) |
| 293 | he = NULL; |
| 294 | #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5) |
| 295 | he = gethostbyname_r(hostname, h, (char*)buffer, size, err); |
| 296 | #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3) |
| 297 | if (gethostbyname_r(hostname, h, (struct hostent_data*) buffer)) |
| 298 | { |
| 299 | he = NULL; |
| 300 | *err = h_errno; |
| 301 | } |
| 302 | else |
| 303 | he = h; |
| 304 | #elif defined(HAVE_GETHOSTBYNAME) |
| 305 | #if wxUSE_THREADS |
| 306 | wxMutexLocker locker(nameLock); |
| 307 | #endif |
| 308 | he = gethostbyname(hostname); |
| 309 | if (!he) |
| 310 | *err = h_errno; |
| 311 | else |
| 312 | he = deepCopyHostent(h, he, (char*)buffer, size, err); |
| 313 | #endif |
| 314 | return he; |
| 315 | } |
| 316 | |
| 317 | #if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS |
| 318 | static wxMutex addrLock; |
| 319 | #endif |
| 320 | struct hostent * wxGethostbyaddr_r(const char *addr_buf, int buf_size, |
| 321 | int proto, struct hostent *h, |
| 322 | void *buffer, int size, int *err) |
| 323 | { |
| 324 | struct hostent *he = NULL; |
| 325 | *err = 0; |
| 326 | #if defined(HAVE_FUNC_GETHOSTBYNAME_R_6) |
| 327 | if (gethostbyaddr_r(addr_buf, buf_size, proto, h, |
| 328 | (char*)buffer, size, &he, err)) |
| 329 | he = NULL; |
| 330 | #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5) |
| 331 | he = gethostbyaddr_r(addr_buf, buf_size, proto, h, (char*)buffer, size, err); |
| 332 | #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3) |
| 333 | if (gethostbyaddr_r(addr_buf, buf_size, proto, h, |
| 334 | (struct hostent_data*) buffer)) |
| 335 | { |
| 336 | he = NULL; |
| 337 | *err = h_errno; |
| 338 | } |
| 339 | else |
| 340 | he = h; |
| 341 | #elif defined(HAVE_GETHOSTBYNAME) |
| 342 | #if wxUSE_THREADS |
| 343 | wxMutexLocker locker(addrLock); |
| 344 | #endif |
| 345 | he = gethostbyaddr(addr_buf, buf_size, proto); |
| 346 | if (!he) |
| 347 | *err = h_errno; |
| 348 | else |
| 349 | he = deepCopyHostent(h, he, (char*)buffer, size, err); |
| 350 | #endif |
| 351 | return he; |
| 352 | } |
| 353 | |
| 354 | #if defined(HAVE_GETSERVBYNAME) |
| 355 | static struct servent * deepCopyServent(struct servent *s, |
| 356 | const struct servent *se, |
| 357 | char *buffer, int size) |
| 358 | { |
| 359 | /* copy plain old structure */ |
| 360 | memcpy(s, se, sizeof(struct servent)); |
| 361 | |
| 362 | /* copy name */ |
| 363 | int len = strlen(s->s_name); |
| 364 | if (len >= size) |
| 365 | { |
| 366 | return NULL; |
| 367 | } |
| 368 | memcpy(buffer, s->s_name, len); |
| 369 | buffer[len] = '\0'; |
| 370 | s->s_name = buffer; |
| 371 | |
| 372 | /* track position in the buffer */ |
| 373 | int pos = len + 1; |
| 374 | |
| 375 | /* copy protocol */ |
| 376 | len = strlen(s->s_proto); |
| 377 | if (pos + len >= size) |
| 378 | { |
| 379 | return NULL; |
| 380 | } |
| 381 | memcpy(buffer + pos, s->s_proto, len); |
| 382 | buffer[pos + len] = '\0'; |
| 383 | s->s_proto = buffer + pos; |
| 384 | |
| 385 | /* track position in the buffer */ |
| 386 | pos += len + 1; |
| 387 | |
| 388 | /* ensure pointer alignment */ |
| 389 | unsigned int misalign = sizeof(char *) - pos%sizeof(char *); |
| 390 | if(misalign < sizeof(char *)) |
| 391 | pos += misalign; |
| 392 | |
| 393 | /* leave space for pointer list */ |
| 394 | char **p = s->s_aliases, **q; |
| 395 | char **s_aliases = (char **)(buffer + pos); |
| 396 | while(*(p++) != 0) |
| 397 | pos += sizeof(char *); |
| 398 | |
| 399 | /* copy addresses and fill new pointer list */ |
| 400 | for (p = s->s_aliases, q = s_aliases; *p != 0; p++, q++){ |
| 401 | len = strlen(*p); |
| 402 | if (size <= pos + len) |
| 403 | { |
| 404 | return NULL; |
| 405 | } |
| 406 | memcpy(buffer + pos, *p, len); /* copy content */ |
| 407 | buffer[pos + len] = '\0'; |
| 408 | *q = buffer + pos; /* set copied pointer to copied content */ |
| 409 | pos += len + 1; |
| 410 | } |
| 411 | *++q = 0; /* null terminate the pointer list */ |
| 412 | s->s_aliases = s_aliases; /* copy pointer to pointers */ |
| 413 | return s; |
| 414 | } |
| 415 | #endif |
| 416 | |
| 417 | #if defined(HAVE_GETSERVBYNAME) && wxUSE_THREADS |
| 418 | static wxMutex servLock; |
| 419 | #endif |
| 420 | struct servent *wxGetservbyname_r(const char *port, const char *protocol, |
| 421 | struct servent *serv, void *buffer, int size) |
| 422 | { |
| 423 | struct servent *se = NULL; |
| 424 | #if defined(HAVE_FUNC_GETSERVBYNAME_R_6) |
| 425 | if (getservbyname_r(port, protocol, serv, (char*)buffer, size, &se)) |
| 426 | se = NULL; |
| 427 | #elif defined(HAVE_FUNC_GETSERVBYNAME_R_5) |
| 428 | se = getservbyname_r(port, protocol, serv, (char*)buffer, size); |
| 429 | #elif defined(HAVE_FUNC_GETSERVBYNAME_R_4) |
| 430 | if (getservbyname_r(port, protocol, serv, (struct servent_data*) buffer)) |
| 431 | se = NULL; |
| 432 | else |
| 433 | se = serv; |
| 434 | #elif defined(HAVE_GETSERVBYNAME) |
| 435 | #if wxUSE_THREADS |
| 436 | wxMutexLocker locker(servLock); |
| 437 | #endif |
| 438 | se = getservbyname(port, protocol); |
| 439 | if (se) |
| 440 | se = deepCopyServent(serv, se, (char*)buffer, size); |
| 441 | #endif |
| 442 | return se; |
| 443 | } |
| 444 | |
| 445 | /* debugging helpers */ |
| 446 | #ifdef __GSOCKET_DEBUG__ |
| 447 | # define GSocket_Debug(args) printf args |
| 448 | #else |
| 449 | # define GSocket_Debug(args) |
| 450 | #endif /* __GSOCKET_DEBUG__ */ |
| 451 | |
| 452 | /* Table of GUI-related functions. We must call them indirectly because |
| 453 | * of wxBase and GUI separation: */ |
| 454 | |
| 455 | static GSocketGUIFunctionsTable *gs_gui_functions; |
| 456 | |
| 457 | class GSocketGUIFunctionsTableNull: public GSocketGUIFunctionsTable |
| 458 | { |
| 459 | public: |
| 460 | virtual bool OnInit(); |
| 461 | virtual void OnExit(); |
| 462 | virtual bool CanUseEventLoop(); |
| 463 | virtual bool Init_Socket(GSocket *socket); |
| 464 | virtual void Destroy_Socket(GSocket *socket); |
| 465 | virtual void Install_Callback(GSocket *socket, GSocketEvent event); |
| 466 | virtual void Uninstall_Callback(GSocket *socket, GSocketEvent event); |
| 467 | virtual void Enable_Events(GSocket *socket); |
| 468 | virtual void Disable_Events(GSocket *socket); |
| 469 | }; |
| 470 | |
| 471 | bool GSocketGUIFunctionsTableNull::OnInit() |
| 472 | { return true; } |
| 473 | void GSocketGUIFunctionsTableNull::OnExit() |
| 474 | {} |
| 475 | bool GSocketGUIFunctionsTableNull::CanUseEventLoop() |
| 476 | { return false; } |
| 477 | bool GSocketGUIFunctionsTableNull::Init_Socket(GSocket *WXUNUSED(socket)) |
| 478 | { return true; } |
| 479 | void GSocketGUIFunctionsTableNull::Destroy_Socket(GSocket *WXUNUSED(socket)) |
| 480 | {} |
| 481 | void GSocketGUIFunctionsTableNull::Install_Callback(GSocket *WXUNUSED(socket), GSocketEvent WXUNUSED(event)) |
| 482 | {} |
| 483 | void GSocketGUIFunctionsTableNull::Uninstall_Callback(GSocket *WXUNUSED(socket), GSocketEvent WXUNUSED(event)) |
| 484 | {} |
| 485 | void GSocketGUIFunctionsTableNull::Enable_Events(GSocket *WXUNUSED(socket)) |
| 486 | {} |
| 487 | void GSocketGUIFunctionsTableNull::Disable_Events(GSocket *WXUNUSED(socket)) |
| 488 | {} |
| 489 | /* Global initialisers */ |
| 490 | |
| 491 | void GSocket_SetGUIFunctions(GSocketGUIFunctionsTable *guifunc) |
| 492 | { |
| 493 | gs_gui_functions = guifunc; |
| 494 | } |
| 495 | |
| 496 | int GSocket_Init(void) |
| 497 | { |
| 498 | if (!gs_gui_functions) |
| 499 | { |
| 500 | static GSocketGUIFunctionsTableNull table; |
| 501 | gs_gui_functions = &table; |
| 502 | } |
| 503 | if ( !gs_gui_functions->OnInit() ) |
| 504 | return 0; |
| 505 | return 1; |
| 506 | } |
| 507 | |
| 508 | void GSocket_Cleanup(void) |
| 509 | { |
| 510 | if (gs_gui_functions) |
| 511 | { |
| 512 | gs_gui_functions->OnExit(); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | /* Constructors / Destructors for GSocket */ |
| 517 | |
| 518 | GSocket::GSocket() |
| 519 | { |
| 520 | int i; |
| 521 | |
| 522 | m_fd = INVALID_SOCKET; |
| 523 | for (i=0;i<GSOCK_MAX_EVENT;i++) |
| 524 | { |
| 525 | m_cbacks[i] = NULL; |
| 526 | } |
| 527 | m_detected = 0; |
| 528 | m_local = NULL; |
| 529 | m_peer = NULL; |
| 530 | m_error = GSOCK_NOERROR; |
| 531 | m_server = false; |
| 532 | m_stream = true; |
| 533 | m_gui_dependent = NULL; |
| 534 | m_non_blocking = false; |
| 535 | m_reusable = false; |
| 536 | m_timeout = 10*60*1000; |
| 537 | /* 10 minutes * 60 sec * 1000 millisec */ |
| 538 | m_establishing = false; |
| 539 | |
| 540 | assert(gs_gui_functions); |
| 541 | /* Per-socket GUI-specific initialization */ |
| 542 | m_ok = gs_gui_functions->Init_Socket(this); |
| 543 | } |
| 544 | |
| 545 | void GSocket::Close() |
| 546 | { |
| 547 | gs_gui_functions->Disable_Events(this); |
| 548 | /* gsockosx.c calls CFSocketInvalidate which closes the socket for us */ |
| 549 | #if !(defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))) |
| 550 | close(m_fd); |
| 551 | #endif |
| 552 | m_fd = INVALID_SOCKET; |
| 553 | } |
| 554 | |
| 555 | GSocket::~GSocket() |
| 556 | { |
| 557 | assert(this); |
| 558 | |
| 559 | /* Check that the socket is really shutdowned */ |
| 560 | if (m_fd != INVALID_SOCKET) |
| 561 | Shutdown(); |
| 562 | |
| 563 | /* Per-socket GUI-specific cleanup */ |
| 564 | gs_gui_functions->Destroy_Socket(this); |
| 565 | |
| 566 | /* Destroy private addresses */ |
| 567 | if (m_local) |
| 568 | GAddress_destroy(m_local); |
| 569 | |
| 570 | if (m_peer) |
| 571 | GAddress_destroy(m_peer); |
| 572 | } |
| 573 | |
| 574 | /* GSocket_Shutdown: |
| 575 | * Disallow further read/write operations on this socket, close |
| 576 | * the fd and disable all callbacks. |
| 577 | */ |
| 578 | void GSocket::Shutdown() |
| 579 | { |
| 580 | int evt; |
| 581 | |
| 582 | assert(this); |
| 583 | |
| 584 | /* Don't allow events to fire after socket has been closed */ |
| 585 | gs_gui_functions->Disable_Events(this); |
| 586 | |
| 587 | /* If socket has been created, shutdown it */ |
| 588 | if (m_fd != INVALID_SOCKET) |
| 589 | { |
| 590 | shutdown(m_fd, 1); |
| 591 | Close(); |
| 592 | } |
| 593 | |
| 594 | /* Disable GUI callbacks */ |
| 595 | for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) |
| 596 | m_cbacks[evt] = NULL; |
| 597 | |
| 598 | m_detected = GSOCK_LOST_FLAG; |
| 599 | } |
| 600 | |
| 601 | /* Address handling */ |
| 602 | |
| 603 | /* GSocket_SetLocal: |
| 604 | * GSocket_GetLocal: |
| 605 | * GSocket_SetPeer: |
| 606 | * GSocket_GetPeer: |
| 607 | * Set or get the local or peer address for this socket. The 'set' |
| 608 | * functions return GSOCK_NOERROR on success, an error code otherwise. |
| 609 | * The 'get' functions return a pointer to a GAddress object on success, |
| 610 | * or NULL otherwise, in which case they set the error code of the |
| 611 | * corresponding GSocket. |
| 612 | * |
| 613 | * Error codes: |
| 614 | * GSOCK_INVSOCK - the socket is not valid. |
| 615 | * GSOCK_INVADDR - the address is not valid. |
| 616 | */ |
| 617 | GSocketError GSocket::SetLocal(GAddress *address) |
| 618 | { |
| 619 | assert(this); |
| 620 | |
| 621 | /* the socket must be initialized, or it must be a server */ |
| 622 | if ((m_fd != INVALID_SOCKET && !m_server)) |
| 623 | { |
| 624 | m_error = GSOCK_INVSOCK; |
| 625 | return GSOCK_INVSOCK; |
| 626 | } |
| 627 | |
| 628 | /* check address */ |
| 629 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 630 | { |
| 631 | m_error = GSOCK_INVADDR; |
| 632 | return GSOCK_INVADDR; |
| 633 | } |
| 634 | |
| 635 | if (m_local) |
| 636 | GAddress_destroy(m_local); |
| 637 | |
| 638 | m_local = GAddress_copy(address); |
| 639 | |
| 640 | return GSOCK_NOERROR; |
| 641 | } |
| 642 | |
| 643 | GSocketError GSocket::SetPeer(GAddress *address) |
| 644 | { |
| 645 | assert(this); |
| 646 | |
| 647 | /* check address */ |
| 648 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 649 | { |
| 650 | m_error = GSOCK_INVADDR; |
| 651 | return GSOCK_INVADDR; |
| 652 | } |
| 653 | |
| 654 | if (m_peer) |
| 655 | GAddress_destroy(m_peer); |
| 656 | |
| 657 | m_peer = GAddress_copy(address); |
| 658 | |
| 659 | return GSOCK_NOERROR; |
| 660 | } |
| 661 | |
| 662 | GAddress *GSocket::GetLocal() |
| 663 | { |
| 664 | GAddress *address; |
| 665 | struct sockaddr addr; |
| 666 | WX_SOCKLEN_T size = sizeof(addr); |
| 667 | GSocketError err; |
| 668 | |
| 669 | assert(this); |
| 670 | |
| 671 | /* try to get it from the m_local var first */ |
| 672 | if (m_local) |
| 673 | return GAddress_copy(m_local); |
| 674 | |
| 675 | /* else, if the socket is initialized, try getsockname */ |
| 676 | if (m_fd == INVALID_SOCKET) |
| 677 | { |
| 678 | m_error = GSOCK_INVSOCK; |
| 679 | return NULL; |
| 680 | } |
| 681 | |
| 682 | if (getsockname(m_fd, &addr, (WX_SOCKLEN_T *) &size) < 0) |
| 683 | { |
| 684 | m_error = GSOCK_IOERR; |
| 685 | return NULL; |
| 686 | } |
| 687 | |
| 688 | /* got a valid address from getsockname, create a GAddress object */ |
| 689 | address = GAddress_new(); |
| 690 | if (address == NULL) |
| 691 | { |
| 692 | m_error = GSOCK_MEMERR; |
| 693 | return NULL; |
| 694 | } |
| 695 | |
| 696 | err = _GAddress_translate_from(address, &addr, size); |
| 697 | if (err != GSOCK_NOERROR) |
| 698 | { |
| 699 | GAddress_destroy(address); |
| 700 | m_error = err; |
| 701 | return NULL; |
| 702 | } |
| 703 | |
| 704 | return address; |
| 705 | } |
| 706 | |
| 707 | GAddress *GSocket::GetPeer() |
| 708 | { |
| 709 | assert(this); |
| 710 | |
| 711 | /* try to get it from the m_peer var */ |
| 712 | if (m_peer) |
| 713 | return GAddress_copy(m_peer); |
| 714 | |
| 715 | return NULL; |
| 716 | } |
| 717 | |
| 718 | /* Server specific parts */ |
| 719 | |
| 720 | /* GSocket_SetServer: |
| 721 | * Sets up this socket as a server. The local address must have been |
| 722 | * set with GSocket_SetLocal() before GSocket_SetServer() is called. |
| 723 | * Returns GSOCK_NOERROR on success, one of the following otherwise: |
| 724 | * |
| 725 | * Error codes: |
| 726 | * GSOCK_INVSOCK - the socket is in use. |
| 727 | * GSOCK_INVADDR - the local address has not been set. |
| 728 | * GSOCK_IOERR - low-level error. |
| 729 | */ |
| 730 | GSocketError GSocket::SetServer() |
| 731 | { |
| 732 | int arg = 1; |
| 733 | |
| 734 | assert(this); |
| 735 | |
| 736 | /* must not be in use */ |
| 737 | if (m_fd != INVALID_SOCKET) |
| 738 | { |
| 739 | m_error = GSOCK_INVSOCK; |
| 740 | return GSOCK_INVSOCK; |
| 741 | } |
| 742 | |
| 743 | /* the local addr must have been set */ |
| 744 | if (!m_local) |
| 745 | { |
| 746 | m_error = GSOCK_INVADDR; |
| 747 | return GSOCK_INVADDR; |
| 748 | } |
| 749 | |
| 750 | /* Initialize all fields */ |
| 751 | m_stream = true; |
| 752 | m_server = true; |
| 753 | |
| 754 | /* Create the socket */ |
| 755 | m_fd = socket(m_local->m_realfamily, SOCK_STREAM, 0); |
| 756 | |
| 757 | if (m_fd == INVALID_SOCKET) |
| 758 | { |
| 759 | m_error = GSOCK_IOERR; |
| 760 | return GSOCK_IOERR; |
| 761 | } |
| 762 | |
| 763 | /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */ |
| 764 | #ifdef SO_NOSIGPIPE |
| 765 | setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(arg)); |
| 766 | #endif |
| 767 | |
| 768 | ioctl(m_fd, FIONBIO, &arg); |
| 769 | gs_gui_functions->Enable_Events(this); |
| 770 | |
| 771 | /* allow a socket to re-bind if the socket is in the TIME_WAIT |
| 772 | state after being previously closed. |
| 773 | */ |
| 774 | if (m_reusable) |
| 775 | { |
| 776 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg)); |
| 777 | #ifdef SO_REUSEPORT |
| 778 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg)); |
| 779 | #endif |
| 780 | } |
| 781 | |
| 782 | /* Bind to the local address, |
| 783 | * retrieve the actual address bound, |
| 784 | * and listen up to 5 connections. |
| 785 | */ |
| 786 | if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) || |
| 787 | (getsockname(m_fd, |
| 788 | m_local->m_addr, |
| 789 | (WX_SOCKLEN_T *) &m_local->m_len) != 0) || |
| 790 | (listen(m_fd, 5) != 0)) |
| 791 | { |
| 792 | Close(); |
| 793 | m_error = GSOCK_IOERR; |
| 794 | return GSOCK_IOERR; |
| 795 | } |
| 796 | |
| 797 | return GSOCK_NOERROR; |
| 798 | } |
| 799 | |
| 800 | /* GSocket_WaitConnection: |
| 801 | * Waits for an incoming client connection. Returns a pointer to |
| 802 | * a GSocket object, or NULL if there was an error, in which case |
| 803 | * the last error field will be updated for the calling GSocket. |
| 804 | * |
| 805 | * Error codes (set in the calling GSocket) |
| 806 | * GSOCK_INVSOCK - the socket is not valid or not a server. |
| 807 | * GSOCK_TIMEDOUT - timeout, no incoming connections. |
| 808 | * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking. |
| 809 | * GSOCK_MEMERR - couldn't allocate memory. |
| 810 | * GSOCK_IOERR - low-level error. |
| 811 | */ |
| 812 | GSocket *GSocket::WaitConnection() |
| 813 | { |
| 814 | struct sockaddr from; |
| 815 | WX_SOCKLEN_T fromlen = sizeof(from); |
| 816 | GSocket *connection; |
| 817 | GSocketError err; |
| 818 | int arg = 1; |
| 819 | |
| 820 | assert(this); |
| 821 | |
| 822 | /* If the socket has already been created, we exit immediately */ |
| 823 | if (m_fd == INVALID_SOCKET || !m_server) |
| 824 | { |
| 825 | m_error = GSOCK_INVSOCK; |
| 826 | return NULL; |
| 827 | } |
| 828 | |
| 829 | /* Create a GSocket object for the new connection */ |
| 830 | connection = GSocket_new(); |
| 831 | |
| 832 | if (!connection) |
| 833 | { |
| 834 | m_error = GSOCK_MEMERR; |
| 835 | return NULL; |
| 836 | } |
| 837 | |
| 838 | /* Wait for a connection (with timeout) */ |
| 839 | if (Input_Timeout() == GSOCK_TIMEDOUT) |
| 840 | { |
| 841 | delete connection; |
| 842 | /* m_error set by _GSocket_Input_Timeout */ |
| 843 | return NULL; |
| 844 | } |
| 845 | |
| 846 | connection->m_fd = accept(m_fd, &from, (WX_SOCKLEN_T *) &fromlen); |
| 847 | |
| 848 | /* Reenable CONNECTION events */ |
| 849 | Enable(GSOCK_CONNECTION); |
| 850 | |
| 851 | if (connection->m_fd == INVALID_SOCKET) |
| 852 | { |
| 853 | if (errno == EWOULDBLOCK) |
| 854 | m_error = GSOCK_WOULDBLOCK; |
| 855 | else |
| 856 | m_error = GSOCK_IOERR; |
| 857 | |
| 858 | delete connection; |
| 859 | return NULL; |
| 860 | } |
| 861 | |
| 862 | /* Initialize all fields */ |
| 863 | connection->m_server = false; |
| 864 | connection->m_stream = true; |
| 865 | |
| 866 | /* Setup the peer address field */ |
| 867 | connection->m_peer = GAddress_new(); |
| 868 | if (!connection->m_peer) |
| 869 | { |
| 870 | delete connection; |
| 871 | m_error = GSOCK_MEMERR; |
| 872 | return NULL; |
| 873 | } |
| 874 | |
| 875 | err = _GAddress_translate_from(connection->m_peer, &from, fromlen); |
| 876 | if (err != GSOCK_NOERROR) |
| 877 | { |
| 878 | delete connection; |
| 879 | m_error = err; |
| 880 | return NULL; |
| 881 | } |
| 882 | |
| 883 | #if defined(__EMX__) || defined(__VISAGECPP__) |
| 884 | ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 885 | #else |
| 886 | ioctl(connection->m_fd, FIONBIO, &arg); |
| 887 | #endif |
| 888 | gs_gui_functions->Enable_Events(connection); |
| 889 | |
| 890 | return connection; |
| 891 | } |
| 892 | |
| 893 | bool GSocket::SetReusable() |
| 894 | { |
| 895 | /* socket must not be null, and must not be in use/already bound */ |
| 896 | if (this && m_fd == INVALID_SOCKET) |
| 897 | { |
| 898 | m_reusable = true; |
| 899 | |
| 900 | return true; |
| 901 | } |
| 902 | |
| 903 | return false; |
| 904 | } |
| 905 | |
| 906 | /* Client specific parts */ |
| 907 | |
| 908 | /* GSocket_Connect: |
| 909 | * For stream (connection oriented) sockets, GSocket_Connect() tries |
| 910 | * to establish a client connection to a server using the peer address |
| 911 | * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the |
| 912 | * connection has been successfully established, or one of the error |
| 913 | * codes listed below. Note that for nonblocking sockets, a return |
| 914 | * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection |
| 915 | * request can be completed later; you should use GSocket_Select() |
| 916 | * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the |
| 917 | * corresponding asynchronous events. |
| 918 | * |
| 919 | * For datagram (non connection oriented) sockets, GSocket_Connect() |
| 920 | * just sets the peer address established with GSocket_SetPeer() as |
| 921 | * default destination. |
| 922 | * |
| 923 | * Error codes: |
| 924 | * GSOCK_INVSOCK - the socket is in use or not valid. |
| 925 | * GSOCK_INVADDR - the peer address has not been established. |
| 926 | * GSOCK_TIMEDOUT - timeout, the connection failed. |
| 927 | * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only) |
| 928 | * GSOCK_MEMERR - couldn't allocate memory. |
| 929 | * GSOCK_IOERR - low-level error. |
| 930 | */ |
| 931 | GSocketError GSocket::Connect(GSocketStream stream) |
| 932 | { |
| 933 | int err, ret; |
| 934 | int arg = 1; |
| 935 | |
| 936 | assert(this); |
| 937 | |
| 938 | /* Enable CONNECTION events (needed for nonblocking connections) */ |
| 939 | Enable(GSOCK_CONNECTION); |
| 940 | |
| 941 | if (m_fd != INVALID_SOCKET) |
| 942 | { |
| 943 | m_error = GSOCK_INVSOCK; |
| 944 | return GSOCK_INVSOCK; |
| 945 | } |
| 946 | |
| 947 | if (!m_peer) |
| 948 | { |
| 949 | m_error = GSOCK_INVADDR; |
| 950 | return GSOCK_INVADDR; |
| 951 | } |
| 952 | |
| 953 | /* Streamed or dgram socket? */ |
| 954 | m_stream = (stream == GSOCK_STREAMED); |
| 955 | m_server = false; |
| 956 | m_establishing = false; |
| 957 | |
| 958 | /* Create the socket */ |
| 959 | m_fd = socket(m_peer->m_realfamily, |
| 960 | m_stream? SOCK_STREAM : SOCK_DGRAM, 0); |
| 961 | |
| 962 | if (m_fd == INVALID_SOCKET) |
| 963 | { |
| 964 | m_error = GSOCK_IOERR; |
| 965 | return GSOCK_IOERR; |
| 966 | } |
| 967 | |
| 968 | /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */ |
| 969 | #ifdef SO_NOSIGPIPE |
| 970 | setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(arg)); |
| 971 | #endif |
| 972 | |
| 973 | #if defined(__EMX__) || defined(__VISAGECPP__) |
| 974 | ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 975 | #else |
| 976 | ioctl(m_fd, FIONBIO, &arg); |
| 977 | #endif |
| 978 | |
| 979 | // If the reuse flag is set, use the applicable socket reuse flags(s) |
| 980 | if (m_reusable) |
| 981 | { |
| 982 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg)); |
| 983 | #ifdef SO_REUSEPORT |
| 984 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg)); |
| 985 | #endif |
| 986 | } |
| 987 | |
| 988 | // If a local address has been set, then we need to bind to it before calling connect |
| 989 | if (m_local && m_local->m_addr) |
| 990 | { |
| 991 | bind(m_fd, m_local->m_addr, m_local->m_len); |
| 992 | } |
| 993 | |
| 994 | /* Connect it to the peer address, with a timeout (see below) */ |
| 995 | ret = connect(m_fd, m_peer->m_addr, m_peer->m_len); |
| 996 | |
| 997 | /* We only call Enable_Events if we know we aren't shutting down the socket. |
| 998 | * NB: Enable_Events needs to be called whether the socket is blocking or |
| 999 | * non-blocking, it just shouldn't be called prior to knowing there is a |
| 1000 | * connection _if_ blocking sockets are being used. |
| 1001 | * If connect above returns 0, we are already connected and need to make the |
| 1002 | * call to Enable_Events now. |
| 1003 | */ |
| 1004 | |
| 1005 | if (m_non_blocking || ret == 0) |
| 1006 | gs_gui_functions->Enable_Events(this); |
| 1007 | |
| 1008 | if (ret == -1) |
| 1009 | { |
| 1010 | err = errno; |
| 1011 | |
| 1012 | /* If connect failed with EINPROGRESS and the GSocket object |
| 1013 | * is in blocking mode, we select() for the specified timeout |
| 1014 | * checking for writability to see if the connection request |
| 1015 | * completes. |
| 1016 | */ |
| 1017 | if ((err == EINPROGRESS) && (!m_non_blocking)) |
| 1018 | { |
| 1019 | if (Output_Timeout() == GSOCK_TIMEDOUT) |
| 1020 | { |
| 1021 | Close(); |
| 1022 | /* m_error is set in _GSocket_Output_Timeout */ |
| 1023 | return GSOCK_TIMEDOUT; |
| 1024 | } |
| 1025 | else |
| 1026 | { |
| 1027 | int error; |
| 1028 | SOCKOPTLEN_T len = sizeof(error); |
| 1029 | |
| 1030 | getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len); |
| 1031 | |
| 1032 | gs_gui_functions->Enable_Events(this); |
| 1033 | |
| 1034 | if (!error) |
| 1035 | return GSOCK_NOERROR; |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | /* If connect failed with EINPROGRESS and the GSocket object |
| 1040 | * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK |
| 1041 | * (and return GSOCK_WOULDBLOCK) but we don't close the socket; |
| 1042 | * this way if the connection completes, a GSOCK_CONNECTION |
| 1043 | * event will be generated, if enabled. |
| 1044 | */ |
| 1045 | if ((err == EINPROGRESS) && (m_non_blocking)) |
| 1046 | { |
| 1047 | m_establishing = true; |
| 1048 | m_error = GSOCK_WOULDBLOCK; |
| 1049 | return GSOCK_WOULDBLOCK; |
| 1050 | } |
| 1051 | |
| 1052 | /* If connect failed with an error other than EINPROGRESS, |
| 1053 | * then the call to GSocket_Connect has failed. |
| 1054 | */ |
| 1055 | Close(); |
| 1056 | m_error = GSOCK_IOERR; |
| 1057 | |
| 1058 | return GSOCK_IOERR; |
| 1059 | } |
| 1060 | |
| 1061 | return GSOCK_NOERROR; |
| 1062 | } |
| 1063 | |
| 1064 | /* Datagram sockets */ |
| 1065 | |
| 1066 | /* GSocket_SetNonOriented: |
| 1067 | * Sets up this socket as a non-connection oriented (datagram) socket. |
| 1068 | * Before using this function, the local address must have been set |
| 1069 | * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR |
| 1070 | * on success, or one of the following otherwise. |
| 1071 | * |
| 1072 | * Error codes: |
| 1073 | * GSOCK_INVSOCK - the socket is in use. |
| 1074 | * GSOCK_INVADDR - the local address has not been set. |
| 1075 | * GSOCK_IOERR - low-level error. |
| 1076 | */ |
| 1077 | GSocketError GSocket::SetNonOriented() |
| 1078 | { |
| 1079 | int arg = 1; |
| 1080 | |
| 1081 | assert(this); |
| 1082 | |
| 1083 | if (m_fd != INVALID_SOCKET) |
| 1084 | { |
| 1085 | m_error = GSOCK_INVSOCK; |
| 1086 | return GSOCK_INVSOCK; |
| 1087 | } |
| 1088 | |
| 1089 | if (!m_local) |
| 1090 | { |
| 1091 | m_error = GSOCK_INVADDR; |
| 1092 | return GSOCK_INVADDR; |
| 1093 | } |
| 1094 | |
| 1095 | /* Initialize all fields */ |
| 1096 | m_stream = false; |
| 1097 | m_server = false; |
| 1098 | |
| 1099 | /* Create the socket */ |
| 1100 | m_fd = socket(m_local->m_realfamily, SOCK_DGRAM, 0); |
| 1101 | |
| 1102 | if (m_fd == INVALID_SOCKET) |
| 1103 | { |
| 1104 | m_error = GSOCK_IOERR; |
| 1105 | return GSOCK_IOERR; |
| 1106 | } |
| 1107 | #if defined(__EMX__) || defined(__VISAGECPP__) |
| 1108 | ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 1109 | #else |
| 1110 | ioctl(m_fd, FIONBIO, &arg); |
| 1111 | #endif |
| 1112 | gs_gui_functions->Enable_Events(this); |
| 1113 | |
| 1114 | if (m_reusable) |
| 1115 | { |
| 1116 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg)); |
| 1117 | #ifdef SO_REUSEPORT |
| 1118 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg)); |
| 1119 | #endif |
| 1120 | } |
| 1121 | |
| 1122 | /* Bind to the local address, |
| 1123 | * and retrieve the actual address bound. |
| 1124 | */ |
| 1125 | if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) || |
| 1126 | (getsockname(m_fd, |
| 1127 | m_local->m_addr, |
| 1128 | (WX_SOCKLEN_T *) &m_local->m_len) != 0)) |
| 1129 | { |
| 1130 | Close(); |
| 1131 | m_error = GSOCK_IOERR; |
| 1132 | return GSOCK_IOERR; |
| 1133 | } |
| 1134 | |
| 1135 | return GSOCK_NOERROR; |
| 1136 | } |
| 1137 | |
| 1138 | /* Generic IO */ |
| 1139 | |
| 1140 | /* Like recv(), send(), ... */ |
| 1141 | int GSocket::Read(char *buffer, int size) |
| 1142 | { |
| 1143 | int ret; |
| 1144 | |
| 1145 | assert(this); |
| 1146 | |
| 1147 | if (m_fd == INVALID_SOCKET || m_server) |
| 1148 | { |
| 1149 | m_error = GSOCK_INVSOCK; |
| 1150 | return -1; |
| 1151 | } |
| 1152 | |
| 1153 | /* Disable events during query of socket status */ |
| 1154 | Disable(GSOCK_INPUT); |
| 1155 | |
| 1156 | /* If the socket is blocking, wait for data (with a timeout) */ |
| 1157 | if (Input_Timeout() == GSOCK_TIMEDOUT) { |
| 1158 | m_error = GSOCK_TIMEDOUT; |
| 1159 | /* Don't return here immediately, otherwise socket events would not be |
| 1160 | * re-enabled! */ |
| 1161 | ret = -1; |
| 1162 | } |
| 1163 | else |
| 1164 | { |
| 1165 | /* Read the data */ |
| 1166 | if (m_stream) |
| 1167 | ret = Recv_Stream(buffer, size); |
| 1168 | else |
| 1169 | ret = Recv_Dgram(buffer, size); |
| 1170 | |
| 1171 | /* If recv returned zero, then the connection has been gracefully closed. |
| 1172 | * Otherwise, recv has returned an error (-1), in which case we have lost the |
| 1173 | * socket only if errno does _not_ indicate that there may be more data to read. |
| 1174 | */ |
| 1175 | if (ret == 0) |
| 1176 | { |
| 1177 | /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */ |
| 1178 | m_detected = GSOCK_LOST_FLAG; |
| 1179 | Detected_Read(); |
| 1180 | return 0; |
| 1181 | } |
| 1182 | else if (ret == -1) |
| 1183 | { |
| 1184 | if ((errno == EWOULDBLOCK) || (errno == EAGAIN)) |
| 1185 | m_error = GSOCK_WOULDBLOCK; |
| 1186 | else |
| 1187 | m_error = GSOCK_IOERR; |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | /* Enable events again now that we are done processing */ |
| 1192 | Enable(GSOCK_INPUT); |
| 1193 | |
| 1194 | return ret; |
| 1195 | } |
| 1196 | |
| 1197 | int GSocket::Write(const char *buffer, int size) |
| 1198 | { |
| 1199 | int ret; |
| 1200 | |
| 1201 | assert(this); |
| 1202 | |
| 1203 | GSocket_Debug(( "GSocket_Write #1, size %d\n", size )); |
| 1204 | |
| 1205 | if (m_fd == INVALID_SOCKET || m_server) |
| 1206 | { |
| 1207 | m_error = GSOCK_INVSOCK; |
| 1208 | return -1; |
| 1209 | } |
| 1210 | |
| 1211 | GSocket_Debug(( "GSocket_Write #2, size %d\n", size )); |
| 1212 | |
| 1213 | /* If the socket is blocking, wait for writability (with a timeout) */ |
| 1214 | if (Output_Timeout() == GSOCK_TIMEDOUT) |
| 1215 | return -1; |
| 1216 | |
| 1217 | GSocket_Debug(( "GSocket_Write #3, size %d\n", size )); |
| 1218 | |
| 1219 | /* Write the data */ |
| 1220 | if (m_stream) |
| 1221 | ret = Send_Stream(buffer, size); |
| 1222 | else |
| 1223 | ret = Send_Dgram(buffer, size); |
| 1224 | |
| 1225 | GSocket_Debug(( "GSocket_Write #4, size %d\n", size )); |
| 1226 | |
| 1227 | if (ret == -1) |
| 1228 | { |
| 1229 | if ((errno == EWOULDBLOCK) || (errno == EAGAIN)) |
| 1230 | { |
| 1231 | m_error = GSOCK_WOULDBLOCK; |
| 1232 | GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" )); |
| 1233 | } |
| 1234 | else |
| 1235 | { |
| 1236 | m_error = GSOCK_IOERR; |
| 1237 | GSocket_Debug(( "GSocket_Write error IOERR\n" )); |
| 1238 | } |
| 1239 | |
| 1240 | /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect |
| 1241 | * in MSW). Once the first OUTPUT event is received, users can assume |
| 1242 | * that the socket is writable until a read operation fails. Only then |
| 1243 | * will further OUTPUT events be posted. |
| 1244 | */ |
| 1245 | Enable(GSOCK_OUTPUT); |
| 1246 | |
| 1247 | return -1; |
| 1248 | } |
| 1249 | |
| 1250 | GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret )); |
| 1251 | |
| 1252 | return ret; |
| 1253 | } |
| 1254 | |
| 1255 | /* GSocket_Select: |
| 1256 | * Polls the socket to determine its status. This function will |
| 1257 | * check for the events specified in the 'flags' parameter, and |
| 1258 | * it will return a mask indicating which operations can be |
| 1259 | * performed. This function won't block, regardless of the |
| 1260 | * mode (blocking | nonblocking) of the socket. |
| 1261 | */ |
| 1262 | GSocketEventFlags GSocket::Select(GSocketEventFlags flags) |
| 1263 | { |
| 1264 | if (!gs_gui_functions->CanUseEventLoop()) |
| 1265 | { |
| 1266 | |
| 1267 | GSocketEventFlags result = 0; |
| 1268 | fd_set readfds; |
| 1269 | fd_set writefds; |
| 1270 | fd_set exceptfds; |
| 1271 | struct timeval tv; |
| 1272 | |
| 1273 | assert(this); |
| 1274 | |
| 1275 | if (m_fd == -1) |
| 1276 | return (GSOCK_LOST_FLAG & flags); |
| 1277 | |
| 1278 | /* Do not use a static struct, Linux can garble it */ |
| 1279 | tv.tv_sec = m_timeout / 1000; |
| 1280 | tv.tv_usec = (m_timeout % 1000) * 1000; |
| 1281 | |
| 1282 | wxFD_ZERO(&readfds); |
| 1283 | wxFD_ZERO(&writefds); |
| 1284 | wxFD_ZERO(&exceptfds); |
| 1285 | wxFD_SET(m_fd, &readfds); |
| 1286 | if (flags & GSOCK_OUTPUT_FLAG || flags & GSOCK_CONNECTION_FLAG) |
| 1287 | wxFD_SET(m_fd, &writefds); |
| 1288 | wxFD_SET(m_fd, &exceptfds); |
| 1289 | |
| 1290 | /* Check 'sticky' CONNECTION flag first */ |
| 1291 | result |= (GSOCK_CONNECTION_FLAG & m_detected); |
| 1292 | |
| 1293 | /* If we have already detected a LOST event, then don't try |
| 1294 | * to do any further processing. |
| 1295 | */ |
| 1296 | if ((m_detected & GSOCK_LOST_FLAG) != 0) |
| 1297 | { |
| 1298 | m_establishing = false; |
| 1299 | |
| 1300 | return (GSOCK_LOST_FLAG & flags); |
| 1301 | } |
| 1302 | |
| 1303 | /* Try select now */ |
| 1304 | if (select(m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0) |
| 1305 | { |
| 1306 | /* What to do here? */ |
| 1307 | return (result & flags); |
| 1308 | } |
| 1309 | |
| 1310 | /* Check for exceptions and errors */ |
| 1311 | if (wxFD_ISSET(m_fd, &exceptfds)) |
| 1312 | { |
| 1313 | m_establishing = false; |
| 1314 | m_detected = GSOCK_LOST_FLAG; |
| 1315 | |
| 1316 | /* LOST event: Abort any further processing */ |
| 1317 | return (GSOCK_LOST_FLAG & flags); |
| 1318 | } |
| 1319 | |
| 1320 | /* Check for readability */ |
| 1321 | if (wxFD_ISSET(m_fd, &readfds)) |
| 1322 | { |
| 1323 | result |= GSOCK_INPUT_FLAG; |
| 1324 | |
| 1325 | if (m_server && m_stream) |
| 1326 | { |
| 1327 | /* This is a TCP server socket that detected a connection. |
| 1328 | While the INPUT_FLAG is also set, it doesn't matter on |
| 1329 | this kind of sockets, as we can only Accept() from them. */ |
| 1330 | result |= GSOCK_CONNECTION_FLAG; |
| 1331 | m_detected |= GSOCK_CONNECTION_FLAG; |
| 1332 | } |
| 1333 | } |
| 1334 | |
| 1335 | /* Check for writability */ |
| 1336 | if (wxFD_ISSET(m_fd, &writefds)) |
| 1337 | { |
| 1338 | if (m_establishing && !m_server) |
| 1339 | { |
| 1340 | int error; |
| 1341 | SOCKOPTLEN_T len = sizeof(error); |
| 1342 | |
| 1343 | m_establishing = false; |
| 1344 | |
| 1345 | getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len); |
| 1346 | |
| 1347 | if (error) |
| 1348 | { |
| 1349 | m_detected = GSOCK_LOST_FLAG; |
| 1350 | |
| 1351 | /* LOST event: Abort any further processing */ |
| 1352 | return (GSOCK_LOST_FLAG & flags); |
| 1353 | } |
| 1354 | else |
| 1355 | { |
| 1356 | result |= GSOCK_CONNECTION_FLAG; |
| 1357 | m_detected |= GSOCK_CONNECTION_FLAG; |
| 1358 | } |
| 1359 | } |
| 1360 | else |
| 1361 | { |
| 1362 | result |= GSOCK_OUTPUT_FLAG; |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | return (result & flags); |
| 1367 | |
| 1368 | } |
| 1369 | else |
| 1370 | { |
| 1371 | assert(this); |
| 1372 | return flags & m_detected; |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | /* Flags */ |
| 1377 | |
| 1378 | /* GSocket_SetNonBlocking: |
| 1379 | * Sets the socket to non-blocking mode. All IO calls will return |
| 1380 | * immediately. |
| 1381 | */ |
| 1382 | void GSocket::SetNonBlocking(bool non_block) |
| 1383 | { |
| 1384 | assert(this); |
| 1385 | |
| 1386 | GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) ); |
| 1387 | |
| 1388 | m_non_blocking = non_block; |
| 1389 | } |
| 1390 | |
| 1391 | /* GSocket_SetTimeout: |
| 1392 | * Sets the timeout for blocking calls. Time is expressed in |
| 1393 | * milliseconds. |
| 1394 | */ |
| 1395 | void GSocket::SetTimeout(unsigned long millisec) |
| 1396 | { |
| 1397 | assert(this); |
| 1398 | |
| 1399 | m_timeout = millisec; |
| 1400 | } |
| 1401 | |
| 1402 | /* GSocket_GetError: |
| 1403 | * Returns the last error occurred for this socket. Note that successful |
| 1404 | * operations do not clear this back to GSOCK_NOERROR, so use it only |
| 1405 | * after an error. |
| 1406 | */ |
| 1407 | GSocketError WXDLLIMPEXP_NET GSocket::GetError() |
| 1408 | { |
| 1409 | assert(this); |
| 1410 | |
| 1411 | return m_error; |
| 1412 | } |
| 1413 | |
| 1414 | /* Callbacks */ |
| 1415 | |
| 1416 | /* GSOCK_INPUT: |
| 1417 | * There is data to be read in the input buffer. If, after a read |
| 1418 | * operation, there is still data available, the callback function will |
| 1419 | * be called again. |
| 1420 | * GSOCK_OUTPUT: |
| 1421 | * The socket is available for writing. That is, the next write call |
| 1422 | * won't block. This event is generated only once, when the connection is |
| 1423 | * first established, and then only if a call failed with GSOCK_WOULDBLOCK, |
| 1424 | * when the output buffer empties again. This means that the app should |
| 1425 | * assume that it can write since the first OUTPUT event, and no more |
| 1426 | * OUTPUT events will be generated unless an error occurs. |
| 1427 | * GSOCK_CONNECTION: |
| 1428 | * Connection successfully established, for client sockets, or incoming |
| 1429 | * client connection, for server sockets. Wait for this event (also watch |
| 1430 | * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call. |
| 1431 | * GSOCK_LOST: |
| 1432 | * The connection is lost (or a connection request failed); this could |
| 1433 | * be due to a failure, or due to the peer closing it gracefully. |
| 1434 | */ |
| 1435 | |
| 1436 | /* GSocket_SetCallback: |
| 1437 | * Enables the callbacks specified by 'flags'. Note that 'flags' |
| 1438 | * may be a combination of flags OR'ed toghether, so the same |
| 1439 | * callback function can be made to accept different events. |
| 1440 | * The callback function must have the following prototype: |
| 1441 | * |
| 1442 | * void function(GSocket *socket, GSocketEvent event, char *cdata) |
| 1443 | */ |
| 1444 | void GSocket::SetCallback(GSocketEventFlags flags, |
| 1445 | GSocketCallback callback, char *cdata) |
| 1446 | { |
| 1447 | int count; |
| 1448 | |
| 1449 | assert(this); |
| 1450 | |
| 1451 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 1452 | { |
| 1453 | if ((flags & (1 << count)) != 0) |
| 1454 | { |
| 1455 | m_cbacks[count] = callback; |
| 1456 | m_data[count] = cdata; |
| 1457 | } |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | /* GSocket_UnsetCallback: |
| 1462 | * Disables all callbacks specified by 'flags', which may be a |
| 1463 | * combination of flags OR'ed toghether. |
| 1464 | */ |
| 1465 | void GSocket::UnsetCallback(GSocketEventFlags flags) |
| 1466 | { |
| 1467 | int count; |
| 1468 | |
| 1469 | assert(this); |
| 1470 | |
| 1471 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 1472 | { |
| 1473 | if ((flags & (1 << count)) != 0) |
| 1474 | { |
| 1475 | m_cbacks[count] = NULL; |
| 1476 | m_data[count] = NULL; |
| 1477 | } |
| 1478 | } |
| 1479 | } |
| 1480 | |
| 1481 | GSocketError GSocket::GetSockOpt(int level, int optname, |
| 1482 | void *optval, int *optlen) |
| 1483 | { |
| 1484 | if (getsockopt(m_fd, level, optname, (char*)optval, (SOCKOPTLEN_T*)optlen) == 0) |
| 1485 | return GSOCK_NOERROR; |
| 1486 | |
| 1487 | return GSOCK_OPTERR; |
| 1488 | } |
| 1489 | |
| 1490 | GSocketError GSocket::SetSockOpt(int level, int optname, |
| 1491 | const void *optval, int optlen) |
| 1492 | { |
| 1493 | if (setsockopt(m_fd, level, optname, (const char*)optval, optlen) == 0) |
| 1494 | return GSOCK_NOERROR; |
| 1495 | |
| 1496 | return GSOCK_OPTERR; |
| 1497 | } |
| 1498 | |
| 1499 | #define CALL_CALLBACK(socket, event) { \ |
| 1500 | socket->Disable(event); \ |
| 1501 | if (socket->m_cbacks[event]) \ |
| 1502 | socket->m_cbacks[event](socket, event, socket->m_data[event]); \ |
| 1503 | } |
| 1504 | |
| 1505 | |
| 1506 | void GSocket::Enable(GSocketEvent event) |
| 1507 | { |
| 1508 | m_detected &= ~(1 << event); |
| 1509 | gs_gui_functions->Install_Callback(this, event); |
| 1510 | } |
| 1511 | |
| 1512 | void GSocket::Disable(GSocketEvent event) |
| 1513 | { |
| 1514 | m_detected |= (1 << event); |
| 1515 | gs_gui_functions->Uninstall_Callback(this, event); |
| 1516 | } |
| 1517 | |
| 1518 | /* _GSocket_Input_Timeout: |
| 1519 | * For blocking sockets, wait until data is available or |
| 1520 | * until timeout ellapses. |
| 1521 | */ |
| 1522 | GSocketError GSocket::Input_Timeout() |
| 1523 | { |
| 1524 | struct timeval tv; |
| 1525 | fd_set readfds; |
| 1526 | int ret; |
| 1527 | |
| 1528 | /* Linux select() will overwrite the struct on return */ |
| 1529 | tv.tv_sec = (m_timeout / 1000); |
| 1530 | tv.tv_usec = (m_timeout % 1000) * 1000; |
| 1531 | |
| 1532 | if (!m_non_blocking) |
| 1533 | { |
| 1534 | wxFD_ZERO(&readfds); |
| 1535 | wxFD_SET(m_fd, &readfds); |
| 1536 | ret = select(m_fd + 1, &readfds, NULL, NULL, &tv); |
| 1537 | if (ret == 0) |
| 1538 | { |
| 1539 | GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" )); |
| 1540 | m_error = GSOCK_TIMEDOUT; |
| 1541 | return GSOCK_TIMEDOUT; |
| 1542 | } |
| 1543 | |
| 1544 | if (ret == -1) |
| 1545 | { |
| 1546 | GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" )); |
| 1547 | if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); } |
| 1548 | if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); } |
| 1549 | if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); } |
| 1550 | if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); } |
| 1551 | m_error = GSOCK_TIMEDOUT; |
| 1552 | return GSOCK_TIMEDOUT; |
| 1553 | } |
| 1554 | } |
| 1555 | |
| 1556 | return GSOCK_NOERROR; |
| 1557 | } |
| 1558 | |
| 1559 | /* _GSocket_Output_Timeout: |
| 1560 | * For blocking sockets, wait until data can be sent without |
| 1561 | * blocking or until timeout ellapses. |
| 1562 | */ |
| 1563 | GSocketError GSocket::Output_Timeout() |
| 1564 | { |
| 1565 | struct timeval tv; |
| 1566 | fd_set writefds; |
| 1567 | int ret; |
| 1568 | |
| 1569 | /* Linux select() will overwrite the struct on return */ |
| 1570 | tv.tv_sec = (m_timeout / 1000); |
| 1571 | tv.tv_usec = (m_timeout % 1000) * 1000; |
| 1572 | |
| 1573 | GSocket_Debug( ("m_non_blocking has: %d\n", (int)m_non_blocking) ); |
| 1574 | |
| 1575 | if (!m_non_blocking) |
| 1576 | { |
| 1577 | wxFD_ZERO(&writefds); |
| 1578 | wxFD_SET(m_fd, &writefds); |
| 1579 | ret = select(m_fd + 1, NULL, &writefds, NULL, &tv); |
| 1580 | if (ret == 0) |
| 1581 | { |
| 1582 | GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" )); |
| 1583 | m_error = GSOCK_TIMEDOUT; |
| 1584 | return GSOCK_TIMEDOUT; |
| 1585 | } |
| 1586 | |
| 1587 | if (ret == -1) |
| 1588 | { |
| 1589 | GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" )); |
| 1590 | if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); } |
| 1591 | if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); } |
| 1592 | if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); } |
| 1593 | if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); } |
| 1594 | m_error = GSOCK_TIMEDOUT; |
| 1595 | return GSOCK_TIMEDOUT; |
| 1596 | } |
| 1597 | |
| 1598 | if ( ! wxFD_ISSET(m_fd, &writefds) ) |
| 1599 | { |
| 1600 | GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" )); |
| 1601 | } |
| 1602 | else |
| 1603 | { |
| 1604 | GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" )); |
| 1605 | } |
| 1606 | } |
| 1607 | else |
| 1608 | { |
| 1609 | GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" )); |
| 1610 | } |
| 1611 | |
| 1612 | return GSOCK_NOERROR; |
| 1613 | } |
| 1614 | |
| 1615 | int GSocket::Recv_Stream(char *buffer, int size) |
| 1616 | { |
| 1617 | int ret; |
| 1618 | do |
| 1619 | { |
| 1620 | ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL); |
| 1621 | } |
| 1622 | while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ |
| 1623 | |
| 1624 | return ret; |
| 1625 | } |
| 1626 | |
| 1627 | int GSocket::Recv_Dgram(char *buffer, int size) |
| 1628 | { |
| 1629 | struct sockaddr from; |
| 1630 | WX_SOCKLEN_T fromlen = sizeof(from); |
| 1631 | int ret; |
| 1632 | GSocketError err; |
| 1633 | |
| 1634 | fromlen = sizeof(from); |
| 1635 | |
| 1636 | do |
| 1637 | { |
| 1638 | ret = recvfrom(m_fd, buffer, size, 0, &from, (WX_SOCKLEN_T *) &fromlen); |
| 1639 | } |
| 1640 | while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ |
| 1641 | |
| 1642 | if (ret == -1) |
| 1643 | return -1; |
| 1644 | |
| 1645 | /* Translate a system address into a GSocket address */ |
| 1646 | if (!m_peer) |
| 1647 | { |
| 1648 | m_peer = GAddress_new(); |
| 1649 | if (!m_peer) |
| 1650 | { |
| 1651 | m_error = GSOCK_MEMERR; |
| 1652 | return -1; |
| 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | err = _GAddress_translate_from(m_peer, &from, fromlen); |
| 1657 | if (err != GSOCK_NOERROR) |
| 1658 | { |
| 1659 | GAddress_destroy(m_peer); |
| 1660 | m_peer = NULL; |
| 1661 | m_error = err; |
| 1662 | return -1; |
| 1663 | } |
| 1664 | |
| 1665 | return ret; |
| 1666 | } |
| 1667 | |
| 1668 | int GSocket::Send_Stream(const char *buffer, int size) |
| 1669 | { |
| 1670 | int ret; |
| 1671 | |
| 1672 | MASK_SIGNAL(); |
| 1673 | |
| 1674 | do |
| 1675 | { |
| 1676 | ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL); |
| 1677 | } |
| 1678 | while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ |
| 1679 | |
| 1680 | UNMASK_SIGNAL(); |
| 1681 | |
| 1682 | return ret; |
| 1683 | } |
| 1684 | |
| 1685 | int GSocket::Send_Dgram(const char *buffer, int size) |
| 1686 | { |
| 1687 | struct sockaddr *addr; |
| 1688 | int len, ret; |
| 1689 | GSocketError err; |
| 1690 | |
| 1691 | if (!m_peer) |
| 1692 | { |
| 1693 | m_error = GSOCK_INVADDR; |
| 1694 | return -1; |
| 1695 | } |
| 1696 | |
| 1697 | err = _GAddress_translate_to(m_peer, &addr, &len); |
| 1698 | if (err != GSOCK_NOERROR) |
| 1699 | { |
| 1700 | m_error = err; |
| 1701 | return -1; |
| 1702 | } |
| 1703 | |
| 1704 | MASK_SIGNAL(); |
| 1705 | |
| 1706 | do |
| 1707 | { |
| 1708 | ret = sendto(m_fd, (char *)buffer, size, 0, addr, len); |
| 1709 | } |
| 1710 | while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ |
| 1711 | |
| 1712 | UNMASK_SIGNAL(); |
| 1713 | |
| 1714 | /* Frees memory allocated from _GAddress_translate_to */ |
| 1715 | free(addr); |
| 1716 | |
| 1717 | return ret; |
| 1718 | } |
| 1719 | |
| 1720 | void GSocket::Detected_Read() |
| 1721 | { |
| 1722 | char c; |
| 1723 | |
| 1724 | /* Safeguard against straggling call to Detected_Read */ |
| 1725 | if (m_fd == INVALID_SOCKET) |
| 1726 | { |
| 1727 | return; |
| 1728 | } |
| 1729 | |
| 1730 | /* If we have already detected a LOST event, then don't try |
| 1731 | * to do any further processing. |
| 1732 | */ |
| 1733 | if ((m_detected & GSOCK_LOST_FLAG) != 0) |
| 1734 | { |
| 1735 | m_establishing = false; |
| 1736 | |
| 1737 | CALL_CALLBACK(this, GSOCK_LOST); |
| 1738 | Shutdown(); |
| 1739 | return; |
| 1740 | } |
| 1741 | |
| 1742 | int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL); |
| 1743 | |
| 1744 | if (num > 0) |
| 1745 | { |
| 1746 | CALL_CALLBACK(this, GSOCK_INPUT); |
| 1747 | } |
| 1748 | else |
| 1749 | { |
| 1750 | if (m_server && m_stream) |
| 1751 | { |
| 1752 | CALL_CALLBACK(this, GSOCK_CONNECTION); |
| 1753 | } |
| 1754 | else |
| 1755 | { |
| 1756 | /* Do not throw a lost event in cases where the socket isn't really lost */ |
| 1757 | if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR)) |
| 1758 | { |
| 1759 | CALL_CALLBACK(this, GSOCK_INPUT); |
| 1760 | } |
| 1761 | else |
| 1762 | { |
| 1763 | CALL_CALLBACK(this, GSOCK_LOST); |
| 1764 | Shutdown(); |
| 1765 | } |
| 1766 | } |
| 1767 | } |
| 1768 | } |
| 1769 | |
| 1770 | void GSocket::Detected_Write() |
| 1771 | { |
| 1772 | /* If we have already detected a LOST event, then don't try |
| 1773 | * to do any further processing. |
| 1774 | */ |
| 1775 | if ((m_detected & GSOCK_LOST_FLAG) != 0) |
| 1776 | { |
| 1777 | m_establishing = false; |
| 1778 | |
| 1779 | CALL_CALLBACK(this, GSOCK_LOST); |
| 1780 | Shutdown(); |
| 1781 | return; |
| 1782 | } |
| 1783 | |
| 1784 | if (m_establishing && !m_server) |
| 1785 | { |
| 1786 | int error; |
| 1787 | SOCKOPTLEN_T len = sizeof(error); |
| 1788 | |
| 1789 | m_establishing = false; |
| 1790 | |
| 1791 | getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len); |
| 1792 | |
| 1793 | if (error) |
| 1794 | { |
| 1795 | CALL_CALLBACK(this, GSOCK_LOST); |
| 1796 | Shutdown(); |
| 1797 | } |
| 1798 | else |
| 1799 | { |
| 1800 | CALL_CALLBACK(this, GSOCK_CONNECTION); |
| 1801 | /* We have to fire this event by hand because CONNECTION (for clients) |
| 1802 | * and OUTPUT are internally the same and we just disabled CONNECTION |
| 1803 | * events with the above macro. |
| 1804 | */ |
| 1805 | CALL_CALLBACK(this, GSOCK_OUTPUT); |
| 1806 | } |
| 1807 | } |
| 1808 | else |
| 1809 | { |
| 1810 | CALL_CALLBACK(this, GSOCK_OUTPUT); |
| 1811 | } |
| 1812 | } |
| 1813 | |
| 1814 | /* Compatibility functions for GSocket */ |
| 1815 | GSocket *GSocket_new(void) |
| 1816 | { |
| 1817 | GSocket *newsocket = new GSocket(); |
| 1818 | if (newsocket->IsOk()) |
| 1819 | return newsocket; |
| 1820 | |
| 1821 | delete newsocket; |
| 1822 | |
| 1823 | return NULL; |
| 1824 | } |
| 1825 | |
| 1826 | /* |
| 1827 | * ------------------------------------------------------------------------- |
| 1828 | * GAddress |
| 1829 | * ------------------------------------------------------------------------- |
| 1830 | */ |
| 1831 | |
| 1832 | /* CHECK_ADDRESS verifies that the current address family is either |
| 1833 | * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it |
| 1834 | * initalizes it to be a GSOCK_*family*. In other cases, it returns |
| 1835 | * an appropiate error code. |
| 1836 | * |
| 1837 | * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error. |
| 1838 | */ |
| 1839 | #define CHECK_ADDRESS(address, family) \ |
| 1840 | { \ |
| 1841 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1842 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1843 | return address->m_error; \ |
| 1844 | if (address->m_family != GSOCK_##family) \ |
| 1845 | { \ |
| 1846 | address->m_error = GSOCK_INVADDR; \ |
| 1847 | return GSOCK_INVADDR; \ |
| 1848 | } \ |
| 1849 | } |
| 1850 | |
| 1851 | #define CHECK_ADDRESS_RETVAL(address, family, retval) \ |
| 1852 | { \ |
| 1853 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1854 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1855 | return retval; \ |
| 1856 | if (address->m_family != GSOCK_##family) \ |
| 1857 | { \ |
| 1858 | address->m_error = GSOCK_INVADDR; \ |
| 1859 | return retval; \ |
| 1860 | } \ |
| 1861 | } |
| 1862 | |
| 1863 | |
| 1864 | GAddress *GAddress_new(void) |
| 1865 | { |
| 1866 | GAddress *address; |
| 1867 | |
| 1868 | if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1869 | return NULL; |
| 1870 | |
| 1871 | address->m_family = GSOCK_NOFAMILY; |
| 1872 | address->m_addr = NULL; |
| 1873 | address->m_len = 0; |
| 1874 | |
| 1875 | return address; |
| 1876 | } |
| 1877 | |
| 1878 | GAddress *GAddress_copy(GAddress *address) |
| 1879 | { |
| 1880 | GAddress *addr2; |
| 1881 | |
| 1882 | assert(address != NULL); |
| 1883 | |
| 1884 | if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1885 | return NULL; |
| 1886 | |
| 1887 | memcpy(addr2, address, sizeof(GAddress)); |
| 1888 | |
| 1889 | if (address->m_addr && address->m_len > 0) |
| 1890 | { |
| 1891 | addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len); |
| 1892 | if (addr2->m_addr == NULL) |
| 1893 | { |
| 1894 | free(addr2); |
| 1895 | return NULL; |
| 1896 | } |
| 1897 | memcpy(addr2->m_addr, address->m_addr, addr2->m_len); |
| 1898 | } |
| 1899 | |
| 1900 | return addr2; |
| 1901 | } |
| 1902 | |
| 1903 | void GAddress_destroy(GAddress *address) |
| 1904 | { |
| 1905 | assert(address != NULL); |
| 1906 | |
| 1907 | if (address->m_addr) |
| 1908 | free(address->m_addr); |
| 1909 | |
| 1910 | free(address); |
| 1911 | } |
| 1912 | |
| 1913 | void GAddress_SetFamily(GAddress *address, GAddressType type) |
| 1914 | { |
| 1915 | assert(address != NULL); |
| 1916 | |
| 1917 | address->m_family = type; |
| 1918 | } |
| 1919 | |
| 1920 | GAddressType GAddress_GetFamily(GAddress *address) |
| 1921 | { |
| 1922 | assert(address != NULL); |
| 1923 | |
| 1924 | return address->m_family; |
| 1925 | } |
| 1926 | |
| 1927 | GSocketError _GAddress_translate_from(GAddress *address, |
| 1928 | struct sockaddr *addr, int len) |
| 1929 | { |
| 1930 | address->m_realfamily = addr->sa_family; |
| 1931 | switch (addr->sa_family) |
| 1932 | { |
| 1933 | case AF_INET: |
| 1934 | address->m_family = GSOCK_INET; |
| 1935 | break; |
| 1936 | case AF_UNIX: |
| 1937 | address->m_family = GSOCK_UNIX; |
| 1938 | break; |
| 1939 | #ifdef AF_INET6 |
| 1940 | case AF_INET6: |
| 1941 | address->m_family = GSOCK_INET6; |
| 1942 | break; |
| 1943 | #endif |
| 1944 | default: |
| 1945 | { |
| 1946 | address->m_error = GSOCK_INVOP; |
| 1947 | return GSOCK_INVOP; |
| 1948 | } |
| 1949 | } |
| 1950 | |
| 1951 | if (address->m_addr) |
| 1952 | free(address->m_addr); |
| 1953 | |
| 1954 | address->m_len = len; |
| 1955 | address->m_addr = (struct sockaddr *)malloc(len); |
| 1956 | |
| 1957 | if (address->m_addr == NULL) |
| 1958 | { |
| 1959 | address->m_error = GSOCK_MEMERR; |
| 1960 | return GSOCK_MEMERR; |
| 1961 | } |
| 1962 | |
| 1963 | memcpy(address->m_addr, addr, len); |
| 1964 | |
| 1965 | return GSOCK_NOERROR; |
| 1966 | } |
| 1967 | |
| 1968 | GSocketError _GAddress_translate_to(GAddress *address, |
| 1969 | struct sockaddr **addr, int *len) |
| 1970 | { |
| 1971 | if (!address->m_addr) |
| 1972 | { |
| 1973 | address->m_error = GSOCK_INVADDR; |
| 1974 | return GSOCK_INVADDR; |
| 1975 | } |
| 1976 | |
| 1977 | *len = address->m_len; |
| 1978 | *addr = (struct sockaddr *)malloc(address->m_len); |
| 1979 | if (*addr == NULL) |
| 1980 | { |
| 1981 | address->m_error = GSOCK_MEMERR; |
| 1982 | return GSOCK_MEMERR; |
| 1983 | } |
| 1984 | |
| 1985 | memcpy(*addr, address->m_addr, address->m_len); |
| 1986 | return GSOCK_NOERROR; |
| 1987 | } |
| 1988 | |
| 1989 | /* |
| 1990 | * ------------------------------------------------------------------------- |
| 1991 | * Internet address family |
| 1992 | * ------------------------------------------------------------------------- |
| 1993 | */ |
| 1994 | |
| 1995 | GSocketError _GAddress_Init_INET(GAddress *address) |
| 1996 | { |
| 1997 | address->m_len = sizeof(struct sockaddr_in); |
| 1998 | address->m_addr = (struct sockaddr *) malloc(address->m_len); |
| 1999 | if (address->m_addr == NULL) |
| 2000 | { |
| 2001 | address->m_error = GSOCK_MEMERR; |
| 2002 | return GSOCK_MEMERR; |
| 2003 | } |
| 2004 | |
| 2005 | address->m_family = GSOCK_INET; |
| 2006 | address->m_realfamily = PF_INET; |
| 2007 | ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; |
| 2008 | ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; |
| 2009 | |
| 2010 | return GSOCK_NOERROR; |
| 2011 | } |
| 2012 | |
| 2013 | GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) |
| 2014 | { |
| 2015 | struct hostent *he; |
| 2016 | struct in_addr *addr; |
| 2017 | |
| 2018 | assert(address != NULL); |
| 2019 | |
| 2020 | CHECK_ADDRESS(address, INET); |
| 2021 | |
| 2022 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 2023 | |
| 2024 | /* If it is a numeric host name, convert it now */ |
| 2025 | #if defined(HAVE_INET_ATON) |
| 2026 | if (inet_aton(hostname, addr) == 0) |
| 2027 | { |
| 2028 | #elif defined(HAVE_INET_ADDR) |
| 2029 | if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 ) |
| 2030 | { |
| 2031 | #else |
| 2032 | /* Use gethostbyname by default */ |
| 2033 | #ifndef __WXMAC__ |
| 2034 | int val = 1; /* VA doesn't like constants in conditional expressions */ |
| 2035 | if (val) |
| 2036 | #endif |
| 2037 | { |
| 2038 | #endif |
| 2039 | struct in_addr *array_addr; |
| 2040 | |
| 2041 | /* It is a real name, we solve it */ |
| 2042 | struct hostent h; |
| 2043 | #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3) |
| 2044 | struct hostent_data buffer; |
| 2045 | #else |
| 2046 | char buffer[1024]; |
| 2047 | #endif |
| 2048 | int err; |
| 2049 | he = wxGethostbyname_r(hostname, &h, (void*)&buffer, sizeof(buffer), &err); |
| 2050 | if (he == NULL) |
| 2051 | { |
| 2052 | /* Reset to invalid address */ |
| 2053 | addr->s_addr = INADDR_NONE; |
| 2054 | address->m_error = GSOCK_NOHOST; |
| 2055 | return GSOCK_NOHOST; |
| 2056 | } |
| 2057 | |
| 2058 | array_addr = (struct in_addr *) *(he->h_addr_list); |
| 2059 | addr->s_addr = array_addr[0].s_addr; |
| 2060 | } |
| 2061 | |
| 2062 | return GSOCK_NOERROR; |
| 2063 | } |
| 2064 | |
| 2065 | GSocketError GAddress_INET_SetAnyAddress(GAddress *address) |
| 2066 | { |
| 2067 | return GAddress_INET_SetHostAddress(address, INADDR_ANY); |
| 2068 | } |
| 2069 | |
| 2070 | GSocketError GAddress_INET_SetHostAddress(GAddress *address, |
| 2071 | unsigned long hostaddr) |
| 2072 | { |
| 2073 | struct in_addr *addr; |
| 2074 | |
| 2075 | assert(address != NULL); |
| 2076 | |
| 2077 | CHECK_ADDRESS(address, INET); |
| 2078 | |
| 2079 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 2080 | addr->s_addr = htonl(hostaddr); |
| 2081 | |
| 2082 | return GSOCK_NOERROR; |
| 2083 | } |
| 2084 | |
| 2085 | GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, |
| 2086 | const char *protocol) |
| 2087 | { |
| 2088 | struct servent *se; |
| 2089 | struct sockaddr_in *addr; |
| 2090 | |
| 2091 | assert(address != NULL); |
| 2092 | CHECK_ADDRESS(address, INET); |
| 2093 | |
| 2094 | if (!port) |
| 2095 | { |
| 2096 | address->m_error = GSOCK_INVPORT; |
| 2097 | return GSOCK_INVPORT; |
| 2098 | } |
| 2099 | |
| 2100 | #if defined(HAVE_FUNC_GETSERVBYNAME_R_4) |
| 2101 | struct servent_data buffer; |
| 2102 | #else |
| 2103 | char buffer[1024]; |
| 2104 | #endif |
| 2105 | struct servent serv; |
| 2106 | se = wxGetservbyname_r(port, protocol, &serv, |
| 2107 | (void*)&buffer, sizeof(buffer)); |
| 2108 | if (!se) |
| 2109 | { |
| 2110 | /* the cast to int suppresses compiler warnings about subscript having the |
| 2111 | type char */ |
| 2112 | if (isdigit((int)port[0])) |
| 2113 | { |
| 2114 | int port_int; |
| 2115 | |
| 2116 | port_int = atoi(port); |
| 2117 | addr = (struct sockaddr_in *)address->m_addr; |
| 2118 | addr->sin_port = htons(port_int); |
| 2119 | return GSOCK_NOERROR; |
| 2120 | } |
| 2121 | |
| 2122 | address->m_error = GSOCK_INVPORT; |
| 2123 | return GSOCK_INVPORT; |
| 2124 | } |
| 2125 | |
| 2126 | addr = (struct sockaddr_in *)address->m_addr; |
| 2127 | addr->sin_port = se->s_port; |
| 2128 | |
| 2129 | return GSOCK_NOERROR; |
| 2130 | } |
| 2131 | |
| 2132 | GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port) |
| 2133 | { |
| 2134 | struct sockaddr_in *addr; |
| 2135 | |
| 2136 | assert(address != NULL); |
| 2137 | CHECK_ADDRESS(address, INET); |
| 2138 | |
| 2139 | addr = (struct sockaddr_in *)address->m_addr; |
| 2140 | addr->sin_port = htons(port); |
| 2141 | |
| 2142 | return GSOCK_NOERROR; |
| 2143 | } |
| 2144 | |
| 2145 | GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf) |
| 2146 | { |
| 2147 | struct hostent *he; |
| 2148 | char *addr_buf; |
| 2149 | struct sockaddr_in *addr; |
| 2150 | |
| 2151 | assert(address != NULL); |
| 2152 | CHECK_ADDRESS(address, INET); |
| 2153 | |
| 2154 | addr = (struct sockaddr_in *)address->m_addr; |
| 2155 | addr_buf = (char *)&(addr->sin_addr); |
| 2156 | |
| 2157 | struct hostent temphost; |
| 2158 | #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3) |
| 2159 | struct hostent_data buffer; |
| 2160 | #else |
| 2161 | char buffer[1024]; |
| 2162 | #endif |
| 2163 | int err; |
| 2164 | he = wxGethostbyaddr_r(addr_buf, sizeof(addr->sin_addr), AF_INET, &temphost, |
| 2165 | (void*)&buffer, sizeof(buffer), &err); |
| 2166 | if (he == NULL) |
| 2167 | { |
| 2168 | address->m_error = GSOCK_NOHOST; |
| 2169 | return GSOCK_NOHOST; |
| 2170 | } |
| 2171 | |
| 2172 | strncpy(hostname, he->h_name, sbuf); |
| 2173 | |
| 2174 | return GSOCK_NOERROR; |
| 2175 | } |
| 2176 | |
| 2177 | unsigned long GAddress_INET_GetHostAddress(GAddress *address) |
| 2178 | { |
| 2179 | struct sockaddr_in *addr; |
| 2180 | |
| 2181 | assert(address != NULL); |
| 2182 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 2183 | |
| 2184 | addr = (struct sockaddr_in *)address->m_addr; |
| 2185 | |
| 2186 | return ntohl(addr->sin_addr.s_addr); |
| 2187 | } |
| 2188 | |
| 2189 | unsigned short GAddress_INET_GetPort(GAddress *address) |
| 2190 | { |
| 2191 | struct sockaddr_in *addr; |
| 2192 | |
| 2193 | assert(address != NULL); |
| 2194 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 2195 | |
| 2196 | addr = (struct sockaddr_in *)address->m_addr; |
| 2197 | return ntohs(addr->sin_port); |
| 2198 | } |
| 2199 | |
| 2200 | /* |
| 2201 | * ------------------------------------------------------------------------- |
| 2202 | * Unix address family |
| 2203 | * ------------------------------------------------------------------------- |
| 2204 | */ |
| 2205 | |
| 2206 | #ifndef __VISAGECPP__ |
| 2207 | GSocketError _GAddress_Init_UNIX(GAddress *address) |
| 2208 | { |
| 2209 | address->m_len = sizeof(struct sockaddr_un); |
| 2210 | address->m_addr = (struct sockaddr *)malloc(address->m_len); |
| 2211 | if (address->m_addr == NULL) |
| 2212 | { |
| 2213 | address->m_error = GSOCK_MEMERR; |
| 2214 | return GSOCK_MEMERR; |
| 2215 | } |
| 2216 | |
| 2217 | address->m_family = GSOCK_UNIX; |
| 2218 | address->m_realfamily = PF_UNIX; |
| 2219 | ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX; |
| 2220 | ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0; |
| 2221 | |
| 2222 | return GSOCK_NOERROR; |
| 2223 | } |
| 2224 | |
| 2225 | #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0])) |
| 2226 | |
| 2227 | GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path) |
| 2228 | { |
| 2229 | struct sockaddr_un *addr; |
| 2230 | |
| 2231 | assert(address != NULL); |
| 2232 | |
| 2233 | CHECK_ADDRESS(address, UNIX); |
| 2234 | |
| 2235 | addr = ((struct sockaddr_un *)address->m_addr); |
| 2236 | strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN); |
| 2237 | addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0'; |
| 2238 | |
| 2239 | return GSOCK_NOERROR; |
| 2240 | } |
| 2241 | |
| 2242 | GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) |
| 2243 | { |
| 2244 | struct sockaddr_un *addr; |
| 2245 | |
| 2246 | assert(address != NULL); |
| 2247 | CHECK_ADDRESS(address, UNIX); |
| 2248 | |
| 2249 | addr = (struct sockaddr_un *)address->m_addr; |
| 2250 | |
| 2251 | strncpy(path, addr->sun_path, sbuf); |
| 2252 | |
| 2253 | return GSOCK_NOERROR; |
| 2254 | } |
| 2255 | #endif /* !defined(__VISAGECPP__) */ |
| 2256 | #endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */ |