mono/metadata/socket-io.c

   1 /*
   2  * socket-io.c: Socket IO internal calls
   3  *
   4  * Author:
   5  *      Dick Porter (dick@ximian.com)
   6  *
   7  * (C) 2001 Ximian, Inc.
   8  */
   9
  10 #include <config.h>
  11
  12 #include <glib.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <unistd.h>
  16 #include <errno.h>
  17
  18 #include <mono/metadata/object.h>
  19 #include <mono/io-layer/io-layer.h>
  20 #include <mono/metadata/socket-io.h>
  21 #include <mono/metadata/exception.h>
  22 #include <mono/metadata/appdomain.h>
  23
  24 #include <sys/time.h>
  25
  26 #ifdef HAVE_NETDB_H
  27 #include <netdb.h>
  28 #endif
  29 #ifdef HAVE_SYS_FILIO_H
  30 #include <sys/filio.h>     /* defines FIONBIO and FIONREAD */
  31 #endif
  32 #ifdef HAVE_SYS_SOCKIO_H
  33 #include <sys/sockio.h>    /* defines SIOCATMARK */
  34 #endif
  35 #ifdef HAVE_SYS_UN_H
  36 #include <sys/un.h>
  37 #endif
  38
  39 #ifdef PLATFORM_WIN32
  40 /* This is a kludge to make this file build under cygwin:
  41  * w32api/ws2tcpip.h has definitions for some AF_INET6 values and
  42  * prototypes for some but not all required functions (notably
  43  * inet_ntop() is missing), but the libws2_32 library is missing the
  44  * actual implementations of these functions.
  45  */
  46 #undef AF_INET6
  47 #endif
  48
  49 #undef DEBUG
  50
  51 static gint32 convert_family(MonoAddressFamily mono_family)
  52 {
  53         gint32 family=-1;
  54
  55         switch(mono_family) {
  56         case AddressFamily_Unknown:
  57         case AddressFamily_ImpLink:
  58         case AddressFamily_Pup:
  59         case AddressFamily_Chaos:
  60         case AddressFamily_Iso:
  61         case AddressFamily_Ecma:
  62         case AddressFamily_DataKit:
  63         case AddressFamily_Ccitt:
  64         case AddressFamily_DataLink:
  65         case AddressFamily_Lat:
  66         case AddressFamily_HyperChannel:
  67         case AddressFamily_NetBios:
  68         case AddressFamily_VoiceView:
  69         case AddressFamily_FireFox:
  70         case AddressFamily_Banyan:
  71         case AddressFamily_Atm:
  72         case AddressFamily_Cluster:
  73         case AddressFamily_Ieee12844:
  74         case AddressFamily_NetworkDesigners:
  75                 g_warning("System.Net.Sockets.AddressFamily has unsupported value 0x%x", mono_family);
  76                 break;
  77
  78         case AddressFamily_Unspecified:
  79                 family=AF_UNSPEC;
  80                 break;
  81
  82         case AddressFamily_Unix:
  83                 family=AF_UNIX;
  84                 break;
  85
  86         case AddressFamily_InterNetwork:
  87                 family=AF_INET;
  88                 break;
  89
  90 #ifdef AF_IPX
  91         case AddressFamily_Ipx:
  92                 family=AF_IPX;
  93                 break;
  94 #endif
  95
  96         case AddressFamily_Sna:
  97                 family=AF_SNA;
  98                 break;
  99
 100         case AddressFamily_DecNet:
 101                 family=AF_DECnet;
 102                 break;
 103
 104         case AddressFamily_AppleTalk:
 105                 family=AF_APPLETALK;
 106                 break;
 107
 108 #ifdef AF_INET6
 109         case AddressFamily_InterNetworkV6:
 110                 family=AF_INET6;
 111                 break;
 112 #endif
 113 #ifdef AF_IRDA
 114         case AddressFamily_Irda:
 115                 family=AF_IRDA;
 116                 break;
 117 #endif
 118         default:
 119                 g_warning("System.Net.Sockets.AddressFamily has unknown value 0x%x", mono_family);
 120         }
 121
 122         return(family);
 123 }
 124
 125 static MonoAddressFamily convert_to_mono_family(guint16 af_family)
 126 {
 127         MonoAddressFamily family=AddressFamily_Unknown;
 128
 129         switch(af_family) {
 130         case AF_UNSPEC:
 131                 family=AddressFamily_Unspecified;
 132                 break;
 133
 134         case AF_UNIX:
 135                 family=AddressFamily_Unix;
 136                 break;
 137
 138         case AF_INET:
 139                 family=AddressFamily_InterNetwork;
 140                 break;
 141
 142 #ifdef AF_IPX
 143         case AF_IPX:
 144                 family=AddressFamily_Ipx;
 145                 break;
 146 #endif
 147
 148         case AF_SNA:
 149                 family=AddressFamily_Sna;
 150                 break;
 151
 152         case AF_DECnet:
 153                 family=AddressFamily_DecNet;
 154                 break;
 155
 156         case AF_APPLETALK:
 157                 family=AddressFamily_AppleTalk;
 158                 break;
 159
 160 #ifdef AF_INET6
 161         case AF_INET6:
 162                 family=AddressFamily_InterNetworkV6;
 163                 break;
 164 #endif
 165
 166 #ifdef AF_IRDA
 167         case AF_IRDA:
 168                 family=AddressFamily_Irda;
 169                 break;
 170 #endif
 171         default:
 172                 g_warning("unknown address family 0x%x", af_family);
 173         }
 174
 175         return(family);
 176 }
 177
 178 static gint32 convert_type(MonoSocketType mono_type)
 179 {
 180         gint32 type=-1;
 181
 182         switch(mono_type) {
 183         case SocketType_Stream:
 184                 type=SOCK_STREAM;
 185                 break;
 186
 187         case SocketType_Dgram:
 188                 type=SOCK_DGRAM;
 189                 break;
 190
 191         case SocketType_Raw:
 192                 type=SOCK_RAW;
 193                 break;
 194
 195         case SocketType_Rdm:
 196                 type=SOCK_RDM;
 197                 break;
 198
 199         case SocketType_Seqpacket:
 200                 type=SOCK_SEQPACKET;
 201                 break;
 202
 203         case SocketType_Unknown:
 204                 g_warning("System.Net.Sockets.SocketType has unsupported value 0x%x", mono_type);
 205                 break;
 206
 207         default:
 208                 g_warning("System.Net.Sockets.SocketType has unknown value 0x%x", mono_type);
 209         }
 210
 211         return(type);
 212 }
 213
 214 static gint32 convert_proto(MonoProtocolType mono_proto)
 215 {
 216         gint32 proto=-1;
 217
 218         switch(mono_proto) {
 219         case ProtocolType_IP:
 220         case ProtocolType_IPv6:
 221         case ProtocolType_Icmp:
 222         case ProtocolType_Igmp:
 223         case ProtocolType_Ggp:
 224         case ProtocolType_Tcp:
 225         case ProtocolType_Pup:
 226         case ProtocolType_Udp:
 227         case ProtocolType_Idp:
 228                 /* These protocols are known (on my system at least) */
 229                 proto=mono_proto;
 230                 break;
 231
 232         case ProtocolType_ND:
 233         case ProtocolType_Raw:
 234         case ProtocolType_Ipx:
 235         case ProtocolType_Spx:
 236         case ProtocolType_SpxII:
 237         case ProtocolType_Unknown:
 238                 /* These protocols arent */
 239                 g_warning("System.Net.Sockets.ProtocolType has unsupported value 0x%x", mono_proto);
 240                 break;
 241
 242         default:
 243                 break;
 244         }
 245
 246         return(proto);
 247 }
 248
 249 static gint32 convert_sockopt_level_and_name(MonoSocketOptionLevel mono_level,
 250                                              MonoSocketOptionName mono_name,
 251                                              int *system_level,
 252                                              int *system_name)
 253 {
 254         switch (mono_level) {
 255         case SocketOptionLevel_Socket:
 256                 *system_level = SOL_SOCKET;
 257
 258                 switch(mono_name) {
 259                 case SocketOptionName_DontLinger:
 260                         /* This is SO_LINGER, because the setsockopt
 261                          * internal call maps DontLinger to SO_LINGER
 262                          * with l_onoff=0
 263                          */
 264                         *system_name = SO_LINGER;
 265                         break;
 266                 case SocketOptionName_Debug:
 267                         *system_name = SO_DEBUG;
 268                         break;
 269 #ifdef SO_ACCEPTCONN
 270                 case SocketOptionName_AcceptConnection:
 271                         *system_name = SO_ACCEPTCONN;
 272                         break;
 273 #endif
 274                 case SocketOptionName_ReuseAddress:
 275                         *system_name = SO_REUSEADDR;
 276                         break;
 277                 case SocketOptionName_KeepAlive:
 278                         *system_name = SO_KEEPALIVE;
 279                         break;
 280                 case SocketOptionName_DontRoute:
 281                         *system_name = SO_DONTROUTE;
 282                         break;
 283                 case SocketOptionName_Broadcast:
 284                         *system_name = SO_BROADCAST;
 285                         break;
 286                 case SocketOptionName_Linger:
 287                         *system_name = SO_LINGER;
 288                         break;
 289                 case SocketOptionName_OutOfBandInline:
 290                         *system_name = SO_OOBINLINE;
 291                         break;
 292                 case SocketOptionName_SendBuffer:
 293                         *system_name = SO_SNDBUF;
 294                         break;
 295                 case SocketOptionName_ReceiveBuffer:
 296                         *system_name = SO_RCVBUF;
 297                         break;
 298                 case SocketOptionName_SendLowWater:
 299                         *system_name = SO_SNDLOWAT;
 300                         break;
 301                 case SocketOptionName_ReceiveLowWater:
 302                         *system_name = SO_RCVLOWAT;
 303                         break;
 304                 case SocketOptionName_SendTimeout:
 305                         *system_name = SO_SNDTIMEO;
 306                         break;
 307                 case SocketOptionName_ReceiveTimeout:
 308                         *system_name = SO_RCVTIMEO;
 309                         break;
 310                 case SocketOptionName_Error:
 311                         *system_name = SO_ERROR;
 312                         break;
 313                 case SocketOptionName_Type:
 314                         *system_name = SO_TYPE;
 315                         break;
 316                 case SocketOptionName_ExclusiveAddressUse:
 317                 case SocketOptionName_UseLoopback:
 318                 case SocketOptionName_MaxConnections:
 319                         /* Can't figure out how to map these, so fall
 320                          * through
 321                          */
 322                 default:
 323                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at Socket level", mono_name);
 324                         return(-1);
 325                 }
 326                 break;
 327
 328         case SocketOptionLevel_IP:
 329 #ifdef HAVE_SOL_IP
 330                 *system_level = SOL_IP;
 331 #else
 332                 if (1) {
 333                         static int cached = 0;
 334                         static int proto;
 335
 336                         if (!cached) {
 337                                 struct protoent *pent;
 338
 339                                 pent = getprotobyname ("IP");
 340                                 proto = pent ? pent->p_proto : 0 /* 0 a good default value?? */;
 341                                 cached = 1;
 342                         }
 343
 344                         *system_level = proto;
 345                 }
 346 #endif /* HAVE_SOL_IP */
 347
 348                 switch(mono_name) {
 349                 case SocketOptionName_IPOptions:
 350                         *system_name = IP_OPTIONS;
 351                         break;
 352 #ifdef IP_HDRINCL
 353                 case SocketOptionName_HeaderIncluded:
 354                         *system_name = IP_HDRINCL;
 355                         break;
 356 #endif
 357 #ifdef IP_TOS
 358                 case SocketOptionName_TypeOfService:
 359                         *system_name = IP_TOS;
 360                         break;
 361 #endif
 362 #ifdef IP_TTL
 363                 case SocketOptionName_IpTimeToLive:
 364                         *system_name = IP_TTL;
 365                         break;
 366 #endif
 367                 case SocketOptionName_MulticastInterface:
 368                         *system_name = IP_MULTICAST_IF;
 369                         break;
 370                 case SocketOptionName_MulticastTimeToLive:
 371                         *system_name = IP_MULTICAST_TTL;
 372                         break;
 373                 case SocketOptionName_MulticastLoopback:
 374                         *system_name = IP_MULTICAST_LOOP;
 375                         break;
 376                 case SocketOptionName_AddMembership:
 377                         *system_name = IP_ADD_MEMBERSHIP;
 378                         break;
 379                 case SocketOptionName_DropMembership:
 380                         *system_name = IP_DROP_MEMBERSHIP;
 381                         break;
 382 #ifdef HAVE_IP_PKTINFO
 383                 case SocketOptionName_PacketInformation:
 384                         *system_name = IP_PKTINFO;
 385                         break;
 386 #endif /* HAVE_IP_PKTINFO */
 387                 case SocketOptionName_DontFragment:
 388                 case SocketOptionName_AddSourceMembership:
 389                 case SocketOptionName_DropSourceMembership:
 390                 case SocketOptionName_BlockSource:
 391                 case SocketOptionName_UnblockSource:
 392                         /* Can't figure out how to map these, so fall
 393                          * through
 394                          */
 395                 default:
 396                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at IP level", mono_name);
 397                         return(-1);
 398                 }
 399                 break;
 400
 401 #ifdef AF_INET6
 402         case SocketOptionLevel_IPv6:
 403 #ifdef HAVE_SOL_IPV6
 404                 *system_level = SOL_IPV6;
 405 #else
 406                 if (1) {
 407                         static int cached = 0;
 408                         static int proto;
 409
 410                         if (!cached) {
 411                                 struct protoent *pent;
 412
 413                                 pent = getprotobyname ("IPV6");
 414                                 proto = pent ? pent->p_proto : 41 /* 41 a good default value?? */;
 415                                 cached = 1;
 416                         }
 417
 418                         *system_level = proto;
 419                 }
 420 #endif /* HAVE_SOL_IPV6 */
 421
 422                 switch(mono_name) {
 423                 case SocketOptionName_IpTimeToLive:
 424                         *system_name = IPV6_UNICAST_HOPS;
 425                         break;
 426                 case SocketOptionName_MulticastInterface:
 427                         *system_name = IPV6_MULTICAST_IF;
 428                         break;
 429                 case SocketOptionName_MulticastTimeToLive:
 430                         *system_name = IPV6_MULTICAST_HOPS;
 431                         break;
 432                 case SocketOptionName_MulticastLoopback:
 433                         *system_name = IPV6_MULTICAST_LOOP;
 434                         break;
 435                 case SocketOptionName_AddMembership:
 436                         *system_name = IPV6_JOIN_GROUP;
 437                         break;
 438                 case SocketOptionName_DropMembership:
 439                         *system_name = IPV6_LEAVE_GROUP;
 440                         break;
 441                 case SocketOptionName_PacketInformation:
 442                         *system_name = IPV6_PKTINFO;
 443                         break;
 444                 case SocketOptionName_HeaderIncluded:
 445                 case SocketOptionName_IPOptions:
 446                 case SocketOptionName_TypeOfService:
 447                 case SocketOptionName_DontFragment:
 448                 case SocketOptionName_AddSourceMembership:
 449                 case SocketOptionName_DropSourceMembership:
 450                 case SocketOptionName_BlockSource:
 451                 case SocketOptionName_UnblockSource:
 452                         /* Can't figure out how to map these, so fall
 453                          * through
 454                          */
 455                 default:
 456                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at IPv6 level", mono_name);
 457                         return(-1);
 458                 }
 459
 460                 break;  /// SocketOptionLevel_IPv6
 461 #endif
 462
 463         case SocketOptionLevel_Tcp:
 464 #ifdef HAVE_SOL_TCP
 465                 *system_level = SOL_TCP;
 466 #else
 467                 if (1) {
 468                         static int cached = 0;
 469                         static int proto;
 470
 471                         if (!cached) {
 472                                 struct protoent *pent;
 473
 474                                 pent = getprotobyname ("TCP");
 475                                 proto = pent ? pent->p_proto : 6 /* is 6 a good default value?? */;
 476                                 cached = 1;
 477                         }
 478
 479                         *system_level = proto;
 480                 }
 481 #endif /* HAVE_SOL_TCP */
 482
 483                 switch(mono_name) {
 484                 case SocketOptionName_NoDelay:
 485                         *system_name = TCP_NODELAY;
 486                         break;
 487 #if 0
 488                         /* The documentation is talking complete
 489                          * bollocks here: rfc-1222 is titled
 490                          * 'Advancing the NSFNET Routing Architecture'
 491                          * and doesn't mention either of the words
 492                          * "expedite" or "urgent".
 493                          */
 494                 case SocketOptionName_BsdUrgent:
 495                 case SocketOptionName_Expedited:
 496 #endif
 497                 default:
 498                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at TCP level", mono_name);
 499                         return(-1);
 500                 }
 501                 break;
 502
 503         case SocketOptionLevel_Udp:
 504                 g_warning("System.Net.Sockets.SocketOptionLevel has unsupported value 0x%x", mono_level);
 505
 506                 switch(mono_name) {
 507                 case SocketOptionName_NoChecksum:
 508                 case SocketOptionName_ChecksumCoverage:
 509                 default:
 510                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at UDP level", mono_name);
 511                         return(-1);
 512                 }
 513                 return(-1);
 514                 break;
 515
 516         default:
 517                 g_warning("System.Net.Sockets.SocketOptionLevel has unknown value 0x%x", mono_level);
 518                 return(-1);
 519         }
 520
 521         return(0);
 522 }
 523
 524 #define STASH_SYS_ASS(this) \
 525         if(system_assembly == NULL) { \
 526                 system_assembly=mono_image_loaded ("System"); \
 527         }
 528
 529 static MonoImage *system_assembly=NULL;
 530
 531
 532 #ifdef AF_INET6
 533 static gint32 get_family_hint(void)
 534 {
 535         MonoClass *socket_class;
 536         MonoClassField *ipv6_field, *ipv4_field;
 537         gint32 ipv6_enabled = -1, ipv4_enabled = -1;
 538         MonoVTable *vtable;
 539
 540         socket_class = mono_class_from_name (system_assembly,
 541                                              "System.Net.Sockets", "Socket");
 542         ipv4_field = mono_class_get_field_from_name (socket_class,
 543                                                      "ipv4Supported");
 544         ipv6_field = mono_class_get_field_from_name (socket_class,
 545                                                      "ipv6Supported");
 546         vtable = mono_class_vtable (mono_domain_get (), socket_class);
 547
 548         mono_field_static_get_value(vtable, ipv4_field, &ipv4_enabled);
 549         mono_field_static_get_value(vtable, ipv6_field, &ipv6_enabled);
 550
 551         if(ipv4_enabled == 1 && ipv6_enabled == 1) {
 552                 return(PF_UNSPEC);
 553         } else if(ipv4_enabled == 1) {
 554                 return(PF_INET);
 555         } else {
 556                 return(PF_INET6);
 557         }
 558 }
 559 #endif
 560
 561 static MonoException *get_socket_exception(guint32 error_code)
 562 {
 563         /* Don't cache this exception, because we need the object
 564          * constructor to set up the message from the sockets error code.
 565          */
 566         MonoException *ex;
 567
 568         /* This is a bit of a kludge.  The SocketException 0-arg
 569          * constructor calls WSAGetLastError() to find the error code
 570          * to use.  Until we can init objects with parameters, this
 571          * will have to do.
 572          */
 573         WSASetLastError(error_code);
 574
 575         ex=(MonoException *)mono_exception_from_name(system_assembly,
 576                                                      "System.Net.Sockets",
 577                                                      "SocketException");
 578         return(ex);
 579 }
 580
 581 gpointer ves_icall_System_Net_Sockets_Socket_Socket_internal(MonoObject *this, gint32 family, gint32 type, gint32 proto)
 582 {
 583         SOCKET sock;
 584         gint32 sock_family;
 585         gint32 sock_proto;
 586         gint32 sock_type;
 587         int ret;
 588         int true=1;
 589
 590         MONO_ARCH_SAVE_REGS;
 591
 592         STASH_SYS_ASS(this);
 593
 594         sock_family=convert_family(family);
 595         if(sock_family==-1) {
 596                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 597                 return(NULL);
 598         }
 599
 600         sock_proto=convert_proto(proto);
 601         if(sock_proto==-1) {
 602                 mono_raise_exception(get_socket_exception(WSAEPROTONOSUPPORT));
 603                 return(NULL);
 604         }
 605
 606         sock_type=convert_type(type);
 607         if(sock_type==-1) {
 608                 mono_raise_exception(get_socket_exception(WSAESOCKTNOSUPPORT));
 609                 return(NULL);
 610         }
 611
 612         sock=socket(sock_family, sock_type, sock_proto);
 613         if(sock==INVALID_SOCKET) {
 614                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 615                 return(NULL);
 616         }
 617
 618         if (sock_family == AF_INET && sock_type == SOCK_DGRAM) {
 619                 return (GUINT_TO_POINTER (sock));
 620         }
 621
 622 #ifdef AF_INET6
 623         if (sock_family == AF_INET6 && sock_type == SOCK_DGRAM) {
 624                 return (GUINT_TO_POINTER (sock));
 625         }
 626 #endif
 627
 628         /* .net seems to set this by default for SOCK_STREAM,
 629          * not for SOCK_DGRAM (see bug #36322)
 630          */
 631         ret=setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &true, sizeof(true));
 632         if(ret==SOCKET_ERROR) {
 633                 closesocket(sock);
 634                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 635                 return(NULL);
 636         }
 637
 638         return(GUINT_TO_POINTER (sock));
 639 }
 640
 641 /* FIXME: the SOCKET parameter (here and in other functions in this
 642  * file) is really an IntPtr which needs to be converted to a guint32.
 643  */
 644 void ves_icall_System_Net_Sockets_Socket_Close_internal(SOCKET sock)
 645 {
 646         MONO_ARCH_SAVE_REGS;
 647
 648 #ifdef DEBUG
 649         g_message (G_GNUC_PRETTY_FUNCTION ": closing 0x%x", sock);
 650 #endif
 651
 652         closesocket(sock);
 653 }
 654
 655 gint32 ves_icall_System_Net_Sockets_SocketException_WSAGetLastError_internal(void)
 656 {
 657         MONO_ARCH_SAVE_REGS;
 658
 659 #ifdef DEBUG
 660         g_message(G_GNUC_PRETTY_FUNCTION ": returning %d", WSAGetLastError());
 661 #endif
 662
 663         return(WSAGetLastError());
 664 }
 665
 666 gint32 ves_icall_System_Net_Sockets_Socket_Available_internal(SOCKET sock)
 667 {
 668         int ret, amount;
 669
 670         MONO_ARCH_SAVE_REGS;
 671
 672         ret=ioctlsocket(sock, FIONREAD, &amount);
 673         if(ret==SOCKET_ERROR) {
 674                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 675                 return(0);
 676         }
 677
 678         return(amount);
 679 }
 680
 681 void ves_icall_System_Net_Sockets_Socket_Blocking_internal(SOCKET sock,
 682                                                            gboolean block)
 683 {
 684         int ret;
 685
 686         MONO_ARCH_SAVE_REGS;
 687
 688         ret=ioctlsocket(sock, FIONBIO, &block);
 689         if(ret==SOCKET_ERROR) {
 690                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 691         }
 692 }
 693
 694 gpointer ves_icall_System_Net_Sockets_Socket_Accept_internal(SOCKET sock)
 695 {
 696         SOCKET newsock;
 697
 698         MONO_ARCH_SAVE_REGS;
 699
 700         newsock=accept(sock, NULL, 0);
 701         if(newsock==INVALID_SOCKET) {
 702                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 703                 return(NULL);
 704         }
 705
 706         return(GUINT_TO_POINTER (newsock));
 707 }
 708
 709 void ves_icall_System_Net_Sockets_Socket_Listen_internal(SOCKET sock,
 710                                                          guint32 backlog)
 711 {
 712         int ret;
 713
 714         MONO_ARCH_SAVE_REGS;
 715
 716         ret=listen(sock, backlog);
 717         if(ret==SOCKET_ERROR) {
 718                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 719         }
 720 }
 721
 722 static MonoObject *create_object_from_sockaddr(struct sockaddr *saddr,
 723                                                int sa_size)
 724 {
 725         MonoDomain *domain = mono_domain_get ();
 726         MonoObject *sockaddr_obj;
 727         MonoClass *sockaddr_class;
 728         MonoClassField *field;
 729         MonoArray *data;
 730         MonoAddressFamily family;
 731
 732         /* Build a System.Net.SocketAddress object instance */
 733         sockaddr_class=mono_class_from_name(system_assembly, "System.Net", "SocketAddress");
 734         sockaddr_obj=mono_object_new(domain, sockaddr_class);
 735
 736         /* Locate the SocketAddress data buffer in the object */
 737         field=mono_class_get_field_from_name(sockaddr_class, "data");
 738
 739         /* Make sure there is space for the family and size bytes */
 740         data=mono_array_new(domain, mono_defaults.byte_class, sa_size+2);
 741
 742         /* The data buffer is laid out as follows:
 743          * byte 0 is the address family
 744          * byte 1 is the buffer length
 745          * bytes 2 and 3 are the port info
 746          * the rest is the address info
 747          */
 748
 749         family=convert_to_mono_family(saddr->sa_family);
 750         if(family==AddressFamily_Unknown) {
 751                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 752                 return(NULL);
 753         }
 754
 755         mono_array_set(data, guint8, 0, family & 0x0FF);
 756         mono_array_set(data, guint8, 1, ((family << 8) & 0x0FFFF));
 757
 758         if(saddr->sa_family==AF_INET) {
 759                 struct sockaddr_in *sa_in=(struct sockaddr_in *)saddr;
 760                 guint16 port=ntohs(sa_in->sin_port);
 761                 guint32 address=ntohl(sa_in->sin_addr.s_addr);
 762
 763                 if(sa_size<8) {
 764                         mono_raise_exception((MonoException *)mono_exception_from_name(mono_defaults.corlib, "System", "SystemException"));
 765                 }
 766
 767                 mono_array_set(data, guint8, 2, (port>>8) & 0xff);
 768                 mono_array_set(data, guint8, 3, (port) & 0xff);
 769                 mono_array_set(data, guint8, 4, (address>>24) & 0xff);
 770                 mono_array_set(data, guint8, 5, (address>>16) & 0xff);
 771                 mono_array_set(data, guint8, 6, (address>>8) & 0xff);
 772                 mono_array_set(data, guint8, 7, (address) & 0xff);
 773
 774                 *(MonoArray **)(((char *)sockaddr_obj) + field->offset)=data;
 775
 776                 return(sockaddr_obj);
 777 #ifdef AF_INET6
 778         } else if (saddr->sa_family == AF_INET6) {
 779                 struct sockaddr_in6 *sa_in=(struct sockaddr_in6 *)saddr;
 780                 int i;
 781
 782                 guint16 port=ntohs(sa_in->sin6_port);
 783
 784                 if(sa_size<28) {
 785                         mono_raise_exception((MonoException *)mono_exception_from_name(mono_defaults.corlib, "System", "SystemException"));
 786                 }
 787
 788                 mono_array_set(data, guint8, 2, (port>>8) & 0xff);
 789                 mono_array_set(data, guint8, 3, (port) & 0xff);
 790
 791                 for(i=0; i<16; i++) {
 792                         mono_array_set(data, guint8, 8+i,
 793                                        sa_in->sin6_addr.s6_addr[i]);
 794                 }
 795
 796                 mono_array_set(data, guint8, 24, sa_in->sin6_scope_id & 0xff);
 797                 mono_array_set(data, guint8, 25,
 798                                (sa_in->sin6_scope_id >> 8) & 0xff);
 799                 mono_array_set(data, guint8, 26,
 800                                (sa_in->sin6_scope_id >> 16) & 0xff);
 801                 mono_array_set(data, guint8, 27,
 802                                (sa_in->sin6_scope_id >> 24) & 0xff);
 803
 804                 *(MonoArray **)(((char *)sockaddr_obj) + field->offset)=data;
 805
 806                 return(sockaddr_obj);
 807 #endif
 808 #ifdef HAVE_SYS_UN_H
 809         } else if (saddr->sa_family == AF_UNIX) {
 810                 int i;
 811
 812                 for (i = 0; i < sa_size; i++) {
 813                         mono_array_set (data, guint8, i+2, saddr->sa_data[i]);
 814                 }
 815
 816                 *(MonoArray **)(((char *)sockaddr_obj) + field->offset) = data;
 817
 818                 return sockaddr_obj;
 819 #endif
 820         } else {
 821                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 822                 return(NULL);
 823         }
 824 }
 825
 826 extern MonoObject *ves_icall_System_Net_Sockets_Socket_LocalEndPoint_internal(SOCKET sock)
 827 {
 828         gchar sa[32];   /// sockaddr in not big enough for sockaddr_in6
 829         int salen;
 830         int ret;
 831
 832         MONO_ARCH_SAVE_REGS;
 833
 834         salen=sizeof(sa);
 835         ret=getsockname(sock, (struct sockaddr *)sa, &salen);
 836
 837         if(ret==SOCKET_ERROR) {
 838                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 839         }
 840
 841 #ifdef DEBUG
 842         g_message(G_GNUC_PRETTY_FUNCTION ": bound to %s port %d", inet_ntoa(((struct sockaddr_in *)&sa)->sin_addr), ntohs(((struct sockaddr_in *)&sa)->sin_port));
 843 #endif
 844
 845         return(create_object_from_sockaddr((struct sockaddr *)sa, salen));
 846 }
 847
 848 extern MonoObject *ves_icall_System_Net_Sockets_Socket_RemoteEndPoint_internal(SOCKET sock)
 849 {
 850         gchar sa[32];   /// sockaddr in not big enough for sockaddr_in6
 851         int salen;
 852         int ret;
 853
 854         MONO_ARCH_SAVE_REGS;
 855
 856         salen=sizeof(sa);
 857         ret=getpeername(sock, (struct sockaddr *)sa, &salen);
 858
 859         if(ret==SOCKET_ERROR) {
 860                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 861         }
 862
 863 #ifdef DEBUG
 864         g_message(G_GNUC_PRETTY_FUNCTION ": connected to %s port %d", inet_ntoa(((struct sockaddr_in *)&sa)->sin_addr), ntohs(((struct sockaddr_in *)&sa)->sin_port));
 865 #endif
 866
 867         return(create_object_from_sockaddr((struct sockaddr *)sa, salen));
 868 }
 869
 870 static struct sockaddr *create_sockaddr_from_object(MonoObject *saddr_obj,
 871                                                     int *sa_size)
 872 {
 873         MonoClassField *field;
 874         MonoArray *data;
 875         gint32 family;
 876         int len;
 877
 878         /* Dig the SocketAddress data buffer out of the object */
 879         field=mono_class_get_field_from_name(saddr_obj->vtable->klass, "data");
 880         data=*(MonoArray **)(((char *)saddr_obj) + field->offset);
 881
 882         /* The data buffer is laid out as follows:
 883          * byte 0 is the address family low byte
 884          * byte 1 is the address family high byte
 885          * INET:
 886          *      bytes 2 and 3 are the port info
 887          *      the rest is the address info
 888          * UNIX:
 889          *      the rest is the file name
 890          */
 891         len = mono_array_length (data);
 892         if (len < 2) {
 893                 mono_raise_exception (mono_exception_from_name(mono_defaults.corlib, "System", "SystemException"));
 894         }
 895
 896         family = convert_family (mono_array_get (data, guint16, 0));
 897         if(family==AF_INET) {
 898                 struct sockaddr_in *sa=g_new0(struct sockaddr_in, 1);
 899                 guint16 port=(mono_array_get(data, guint8, 2) << 8) +
 900                         mono_array_get(data, guint8, 3);
 901                 guint32 address=(mono_array_get(data, guint8, 4) << 24) +
 902                         (mono_array_get(data, guint8, 5) << 16 ) +
 903                         (mono_array_get(data, guint8, 6) << 8) +
 904                         mono_array_get(data, guint8, 7);
 905
 906                 sa->sin_family=family;
 907                 sa->sin_addr.s_addr=htonl(address);
 908                 sa->sin_port=htons(port);
 909
 910                 *sa_size=sizeof(struct sockaddr_in);
 911                 return((struct sockaddr *)sa);
 912
 913 #ifdef AF_INET6
 914         } else if (family == AF_INET6) {
 915                 struct sockaddr_in6 *sa=g_new0(struct sockaddr_in6, 1);
 916                 int i;
 917
 918                 guint16 port = mono_array_get(data, guint8, 3) + (mono_array_get(data, guint8, 2) << 8);
 919                 guint32 scopeid = mono_array_get(data, guint8, 24) +
 920                         (mono_array_get(data, guint8, 25)<<8) +
 921                         (mono_array_get(data, guint8, 26)<<16) +
 922                         (mono_array_get(data, guint8, 27)<<24);
 923
 924                 sa->sin6_family=family;
 925                 sa->sin6_port=htons(port);
 926                 sa->sin6_scope_id = scopeid;
 927
 928                 for(i=0; i<16; i++)
 929                         sa->sin6_addr.s6_addr[i] = mono_array_get(data, guint8, 8+i);
 930
 931                 *sa_size=sizeof(struct sockaddr_in6);
 932                 return((struct sockaddr *)sa);
 933 #endif
 934 #ifdef HAVE_SYS_UN_H
 935         } else if (family == AF_UNIX) {
 936                 struct sockaddr_un *sock_un = g_new0 (struct sockaddr_un, 1);
 937                 int i;
 938
 939                 if (len - 2 > MONO_SIZEOF_SUNPATH)
 940                         mono_raise_exception (mono_get_exception_index_out_of_range ());
 941
 942                 sock_un->sun_family = family;
 943                 for (i = 0; i < len - 2; i++)
 944                         sock_un->sun_path [i] = mono_array_get (data, guint8,
 945                                                                 i + 2);
 946                 sock_un->sun_path [len - 2] = '\0';
 947                 *sa_size = sizeof (struct sockaddr_un);
 948
 949                 return (struct sockaddr *)sock_un;
 950 #endif
 951         } else {
 952                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 953                 return(0);
 954         }
 955 }
 956
 957 extern void ves_icall_System_Net_Sockets_Socket_Bind_internal(SOCKET sock, MonoObject *sockaddr)
 958 {
 959         struct sockaddr *sa;
 960         int sa_size;
 961         int ret;
 962
 963         MONO_ARCH_SAVE_REGS;
 964
 965         sa=create_sockaddr_from_object(sockaddr, &sa_size);
 966
 967 #ifdef DEBUG
 968         g_message(G_GNUC_PRETTY_FUNCTION ": binding to %s port %d", inet_ntoa(((struct sockaddr_in *)sa)->sin_addr), ntohs (((struct sockaddr_in *)sa)->sin_port));
 969 #endif
 970
 971         ret=bind(sock, sa, sa_size);
 972         g_free(sa);
 973
 974         if(ret==SOCKET_ERROR) {
 975                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 976         }
 977 }
 978
 979 extern void ves_icall_System_Net_Sockets_Socket_Connect_internal(SOCKET sock, MonoObject *sockaddr)
 980 {
 981         struct sockaddr *sa;
 982         int sa_size;
 983         int ret;
 984
 985         MONO_ARCH_SAVE_REGS;
 986
 987         sa=create_sockaddr_from_object(sockaddr, &sa_size);
 988
 989 #ifdef DEBUG
 990         g_message(G_GNUC_PRETTY_FUNCTION ": connecting to %s port %d", inet_ntoa(((struct sockaddr_in *)sa)->sin_addr), ntohs (((struct sockaddr_in *)sa)->sin_port));
 991 #endif
 992
 993         ret=connect(sock, sa, sa_size);
 994         g_free(sa);
 995
 996         if(ret==SOCKET_ERROR) {
 997                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 998         }
 999 }
1000
1001 gint32 ves_icall_System_Net_Sockets_Socket_Receive_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags)
1002 {
1003         int ret;
1004         guchar *buf;
1005         gint32 alen;
1006         int recvflags=0;
1007
1008         MONO_ARCH_SAVE_REGS;
1009
1010         alen=mono_array_length(buffer);
1011         if(offset+count>alen) {
1012                 return(0);
1013         }
1014
1015         buf=mono_array_addr(buffer, guchar, offset);
1016
1017         ret=recv(sock, buf, count, recvflags);
1018         if(ret==SOCKET_ERROR) {
1019                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1020         }
1021
1022         return(ret);
1023 }
1024
1025 gint32 ves_icall_System_Net_Sockets_Socket_RecvFrom_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags, MonoObject **sockaddr)
1026 {
1027         int ret;
1028         guchar *buf;
1029         gint32 alen;
1030         int recvflags=0;
1031         struct sockaddr *sa;
1032         int sa_size;
1033
1034         MONO_ARCH_SAVE_REGS;
1035
1036         alen=mono_array_length(buffer);
1037         if(offset+count>alen) {
1038                 return(0);
1039         }
1040
1041         sa=create_sockaddr_from_object(*sockaddr, &sa_size);
1042
1043         buf=mono_array_addr(buffer, guchar, offset);
1044
1045         ret=recvfrom(sock, buf, count, recvflags, sa, &sa_size);
1046
1047         if(ret==SOCKET_ERROR) {
1048                 g_free(sa);
1049                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1050         }
1051
1052         *sockaddr=create_object_from_sockaddr(sa, sa_size);
1053         g_free(sa);
1054
1055         return(ret);
1056 }
1057
1058 gint32 ves_icall_System_Net_Sockets_Socket_Send_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags)
1059 {
1060         int ret;
1061         guchar *buf;
1062         gint32 alen;
1063         int sendflags=0;
1064
1065         MONO_ARCH_SAVE_REGS;
1066
1067         alen=mono_array_length(buffer);
1068         if(offset+count>alen) {
1069                 return(0);
1070         }
1071
1072 #ifdef DEBUG
1073         g_message(G_GNUC_PRETTY_FUNCTION ": alen: %d", alen);
1074 #endif
1075
1076         buf=mono_array_addr(buffer, guchar, offset);
1077
1078 #ifdef DEBUG
1079         g_message(G_GNUC_PRETTY_FUNCTION ": Sending %d bytes", count);
1080 #endif
1081
1082         ret=send(sock, buf, count, sendflags);
1083         if(ret==SOCKET_ERROR) {
1084                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1085         }
1086
1087         return(ret);
1088 }
1089
1090 gint32 ves_icall_System_Net_Sockets_Socket_SendTo_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags, MonoObject *sockaddr)
1091 {
1092         int ret;
1093         guchar *buf;
1094         gint32 alen;
1095         int sendflags=0;
1096         struct sockaddr *sa;
1097         int sa_size;
1098
1099         MONO_ARCH_SAVE_REGS;
1100
1101         alen=mono_array_length(buffer);
1102         if(offset+count>alen) {
1103                 return(0);
1104         }
1105
1106         sa=create_sockaddr_from_object(sockaddr, &sa_size);
1107
1108 #ifdef DEBUG
1109         g_message(G_GNUC_PRETTY_FUNCTION ": alen: %d", alen);
1110 #endif
1111
1112         buf=mono_array_addr(buffer, guchar, offset);
1113
1114 #ifdef DEBUG
1115         g_message(G_GNUC_PRETTY_FUNCTION ": Sending %d bytes", count);
1116 #endif
1117
1118         ret=sendto(sock, buf, count, sendflags, sa, sa_size);
1119         g_free(sa);
1120
1121         if(ret==SOCKET_ERROR) {
1122                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1123         }
1124
1125         return(ret);
1126 }
1127
1128 static SOCKET Socket_to_SOCKET(MonoObject *sockobj)
1129 {
1130         SOCKET sock;
1131         MonoClassField *field;
1132
1133         field=mono_class_get_field_from_name(sockobj->vtable->klass, "socket");
1134         sock=*(SOCKET *)(((char *)sockobj)+field->offset);
1135
1136         return(sock);
1137 }
1138
1139 void ves_icall_System_Net_Sockets_Socket_Select_internal(MonoArray **read_socks, MonoArray **write_socks, MonoArray **err_socks, gint32 timeout)
1140 {
1141         fd_set readfds, writefds, errfds;
1142         fd_set *readptr = NULL, *writeptr = NULL, *errptr = NULL;
1143         struct timeval tv;
1144         div_t divvy;
1145         int ret;
1146         int readarrsize = 0, writearrsize = 0, errarrsize = 0;
1147         MonoDomain *domain=mono_domain_get();
1148         MonoClass *sock_arr_class;
1149         MonoArray *socks;
1150         int count;
1151         int i;
1152         SOCKET handle;
1153
1154         MONO_ARCH_SAVE_REGS;
1155
1156         if (*read_socks)
1157                 readarrsize=mono_array_length(*read_socks);
1158
1159         if(readarrsize>FD_SETSIZE) {
1160                 mono_raise_exception(get_socket_exception(WSAEFAULT));
1161                 return;
1162         }
1163
1164         if (readarrsize) {
1165                 readptr = &readfds;
1166                 FD_ZERO(&readfds);
1167                 for(i=0; i<readarrsize; i++) {
1168                         handle = Socket_to_SOCKET(mono_array_get(*read_socks, MonoObject *, i));
1169                         FD_SET(handle, &readfds);
1170                 }
1171         }
1172
1173         if (*write_socks)
1174                 writearrsize=mono_array_length(*write_socks);
1175
1176         if(writearrsize>FD_SETSIZE) {
1177                 mono_raise_exception(get_socket_exception(WSAEFAULT));
1178                 return;
1179         }
1180
1181         if (writearrsize) {
1182                 writeptr = &writefds;
1183                 FD_ZERO(&writefds);
1184                 for(i=0; i<writearrsize; i++) {
1185                         handle = Socket_to_SOCKET(mono_array_get(*write_socks, MonoObject *, i));
1186                         FD_SET(handle, &writefds);
1187                 }
1188         }
1189
1190         if (*err_socks)
1191                 errarrsize=mono_array_length(*err_socks);
1192
1193         if(errarrsize>FD_SETSIZE) {
1194                 mono_raise_exception(get_socket_exception(WSAEFAULT));
1195                 return;
1196         }
1197
1198         if (errarrsize) {
1199                 errptr = &errfds;
1200                 FD_ZERO(&errfds);
1201                 for(i=0; i<errarrsize; i++) {
1202                         handle = Socket_to_SOCKET(mono_array_get(*err_socks, MonoObject *, i));
1203                         FD_SET(handle, &errfds);
1204                 }
1205         }
1206
1207         /* Negative timeout meaning block until ready is only
1208          * specified in Poll, not Select
1209          */
1210
1211         do {
1212                 if(timeout>=0) {
1213                         divvy=div(timeout, 1000000);
1214                         tv.tv_sec=divvy.quot;
1215                         tv.tv_usec=divvy.rem;
1216
1217                         ret=select(0, readptr, writeptr, errptr, &tv);
1218                 } else {
1219                         ret=select(0, readptr, writeptr, errptr, NULL);
1220                 }
1221         } while ((ret==SOCKET_ERROR) && (WSAGetLastError() == WSAEINTR));
1222
1223         if(ret==SOCKET_ERROR) {
1224                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1225                 return;
1226         }
1227
1228         if (readarrsize) {
1229                 sock_arr_class=((MonoObject *)*read_socks)->vtable->klass;
1230
1231                 count=0;
1232                 for(i=0; i<readarrsize; i++) {
1233                         if(FD_ISSET(Socket_to_SOCKET(mono_array_get(*read_socks, MonoObject *, i)), &readfds)) {
1234                                 count++;
1235                         }
1236                 }
1237                 socks=mono_array_new_full(domain, sock_arr_class, &count, NULL);
1238                 count=0;
1239                 for(i=0; i<readarrsize; i++) {
1240                         MonoObject *sock=mono_array_get(*read_socks, MonoObject *, i);
1241
1242                         if(FD_ISSET(Socket_to_SOCKET(sock), &readfds)) {
1243                                 mono_array_set(socks, MonoObject *, count, sock);
1244                                 count++;
1245                         }
1246                 }
1247                 *read_socks=socks;
1248         } else {
1249                 *read_socks = NULL;
1250         }
1251
1252         if (writearrsize) {
1253                 sock_arr_class=((MonoObject *)*write_socks)->vtable->klass;
1254                 count=0;
1255                 for(i=0; i<writearrsize; i++) {
1256                         if(FD_ISSET(Socket_to_SOCKET(mono_array_get(*write_socks, MonoObject *, i)), &writefds)) {
1257                                 count++;
1258                         }
1259                 }
1260                 socks=mono_array_new_full(domain, sock_arr_class, &count, NULL);
1261                 count=0;
1262                 for(i=0; i<writearrsize; i++) {
1263                         MonoObject *sock=mono_array_get(*write_socks, MonoObject *, i);
1264
1265                         if(FD_ISSET(Socket_to_SOCKET(sock), &writefds)) {
1266                                 mono_array_set(socks, MonoObject *, count, sock);
1267                                 count++;
1268                         }
1269                 }
1270                 *write_socks=socks;
1271         } else {
1272                 *write_socks = NULL;
1273         }
1274
1275         if (errarrsize) {
1276                 sock_arr_class=((MonoObject *)*err_socks)->vtable->klass;
1277                 count=0;
1278                 for(i=0; i<errarrsize; i++) {
1279                         if(FD_ISSET(Socket_to_SOCKET(mono_array_get(*err_socks, MonoObject *, i)), &errfds)) {
1280                                 count++;
1281                         }
1282                 }
1283                 socks=mono_array_new_full(domain, sock_arr_class, &count, NULL);
1284                 count=0;
1285                 for(i=0; i<errarrsize; i++) {
1286                         MonoObject *sock=mono_array_get(*err_socks, MonoObject *, i);
1287
1288                         if(FD_ISSET(Socket_to_SOCKET(sock), &errfds)) {
1289                                 mono_array_set(socks, MonoObject *, count, sock);
1290                                 count++;
1291                         }
1292                 }
1293                 *err_socks=socks;
1294         }
1295 }
1296
1297 static MonoObject* int_to_object (MonoDomain *domain, int val)
1298 {
1299         /* construct an Int32 object to hold val */
1300         MonoObject* obj = mono_object_new(domain, mono_defaults.int32_class);
1301
1302         /* Locate and set the "value" field */
1303         MonoClassField *field = mono_class_get_field_from_name(mono_defaults.int32_class,
1304                                              "value");
1305         *(gint32 *)(((char *)obj)+field->offset)=val;
1306     return obj;
1307 }
1308
1309
1310 void ves_icall_System_Net_Sockets_Socket_GetSocketOption_obj_internal(SOCKET sock, gint32 level, gint32 name, MonoObject **obj_val)
1311 {
1312         int system_level;
1313         int system_name;
1314         int ret;
1315         int val;
1316         int valsize=sizeof(val);
1317         struct linger linger;
1318         int lingersize=sizeof(linger);
1319         struct timeval tv;
1320         int tvsize=sizeof(tv);
1321         MonoDomain *domain=mono_domain_get();
1322         MonoObject *obj;
1323         MonoClass *obj_class;
1324         MonoClassField *field;
1325
1326         MONO_ARCH_SAVE_REGS;
1327
1328         ret=convert_sockopt_level_and_name(level, name, &system_level,
1329                                            &system_name);
1330         if(ret==-1) {
1331                 mono_raise_exception(get_socket_exception(WSAENOPROTOOPT));
1332                 return;
1333         }
1334
1335         /* No need to deal with MulticastOption names here, because
1336          * you cant getsockopt AddMembership or DropMembership (the
1337          * int getsockopt will error, causing an exception)
1338          */
1339         switch(name) {
1340         case SocketOptionName_Linger:
1341         case SocketOptionName_DontLinger:
1342                 ret=getsockopt(sock, system_level, system_name, &linger,
1343                                &lingersize);
1344                 break;
1345
1346         case SocketOptionName_SendTimeout:
1347         case SocketOptionName_ReceiveTimeout:
1348                 ret=getsockopt(sock, system_level, system_name, &tv,
1349                            &tvsize);
1350                 break;
1351
1352         default:
1353                 ret=getsockopt(sock, system_level, system_name, &val,
1354                                &valsize);
1355         }
1356
1357         if(ret==SOCKET_ERROR) {
1358                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1359                 return;
1360         }
1361
1362         switch(name) {
1363         case SocketOptionName_Linger:
1364                 /* build a System.Net.Sockets.LingerOption */
1365                 obj_class=mono_class_from_name(system_assembly,
1366                                                "System.Net.Sockets",
1367                                                "LingerOption");
1368                 obj=mono_object_new(domain, obj_class);
1369
1370                 /* Locate and set the fields "bool enabled" and "int
1371                  * seconds"
1372                  */
1373                 field=mono_class_get_field_from_name(obj_class, "enabled");
1374                 *(guint8 *)(((char *)obj)+field->offset)=linger.l_onoff;
1375
1376                 field=mono_class_get_field_from_name(obj_class, "seconds");
1377                 *(guint32 *)(((char *)obj)+field->offset)=linger.l_linger;
1378
1379                 break;
1380
1381         case SocketOptionName_DontLinger:
1382                 /* construct a bool int in val - true if linger is off */
1383                 obj = int_to_object (domain, !linger.l_onoff);
1384                 break;
1385
1386         case SocketOptionName_SendTimeout:
1387         case SocketOptionName_ReceiveTimeout:
1388                 obj = int_to_object (domain, (tv.tv_sec * 1000) + (tv.tv_usec / 1000));
1389                 break;
1390
1391         default:
1392                 obj = int_to_object (domain, val);
1393         }
1394
1395         *obj_val=obj;
1396 }
1397
1398 void ves_icall_System_Net_Sockets_Socket_GetSocketOption_arr_internal(SOCKET sock, gint32 level, gint32 name, MonoArray **byte_val)
1399 {
1400         int system_level;
1401         int system_name;
1402         int ret;
1403         guchar *buf;
1404         int valsize;
1405
1406         MONO_ARCH_SAVE_REGS;
1407
1408         ret=convert_sockopt_level_and_name(level, name, &system_level,
1409                                            &system_name);
1410         if(ret==-1) {
1411                 mono_raise_exception(get_socket_exception(WSAENOPROTOOPT));
1412                 return;
1413         }
1414
1415         valsize=mono_array_length(*byte_val);
1416         buf=mono_array_addr(*byte_val, guchar, 0);
1417
1418         ret=getsockopt(sock, system_level, system_name, buf, &valsize);
1419         if(ret==SOCKET_ERROR) {
1420                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1421         }
1422 }
1423
1424 static struct in_addr ipaddress_to_struct_in_addr(MonoObject *ipaddr)
1425 {
1426         struct in_addr inaddr;
1427         MonoClassField *field;
1428
1429         field=mono_class_get_field_from_name(ipaddr->vtable->klass, "address");
1430
1431         /* No idea why .net uses a 64bit type to hold a 32bit value...
1432          *
1433          * Internal value of IPAddess is in Network Order, there is no need
1434          * to call htonl here.
1435          */
1436         inaddr.s_addr=(guint32)*(guint64 *)(((char *)ipaddr)+field->offset);
1437
1438         return(inaddr);
1439 }
1440
1441 #ifdef AF_INET6
1442 static struct in6_addr ipaddress_to_struct_in6_addr(MonoObject *ipaddr)
1443 {
1444         struct in6_addr in6addr;
1445         MonoClassField *field;
1446         MonoArray *data;
1447         int i;
1448
1449         field=mono_class_get_field_from_name(ipaddr->vtable->klass, "_numbers");
1450         data=*(MonoArray **)(((char *)ipaddr) + field->offset);
1451
1452 /* MacOSX doesn't provide the define... */
1453 #ifndef s6_addr16
1454 #define s6_addr16 __u6_addr.__u6_addr16
1455 #endif
1456         for(i=0; i<8; i++)
1457                 in6addr.s6_addr16[i] = mono_array_get (data, guint16, i);
1458
1459         return(in6addr);
1460 }
1461 #endif /* AF_INET6 */
1462
1463 void ves_icall_System_Net_Sockets_Socket_SetSocketOption_internal(SOCKET sock, gint32 level, gint32 name, MonoObject *obj_val, MonoArray *byte_val, gint32 int_val)
1464 {
1465         int system_level;
1466         int system_name;
1467         int ret;
1468
1469         MONO_ARCH_SAVE_REGS;
1470
1471         ret=convert_sockopt_level_and_name(level, name, &system_level,
1472                                            &system_name);
1473         if(ret==-1) {
1474                 mono_raise_exception(get_socket_exception(WSAENOPROTOOPT));
1475                 return;
1476         }
1477
1478         /* Only one of obj_val, byte_val or int_val has data */
1479         if(obj_val!=NULL) {
1480                 MonoClassField *field;
1481                 struct linger linger;
1482                 int valsize;
1483
1484                 switch(name) {
1485                 case SocketOptionName_DontLinger:
1486                         linger.l_onoff=0;
1487                         linger.l_linger=0;
1488                         valsize=sizeof(linger);
1489                         ret=setsockopt(sock, system_level, system_name,
1490                                        &linger, valsize);
1491                         break;
1492
1493                 case SocketOptionName_Linger:
1494                         /* Dig out "bool enabled" and "int seconds"
1495                          * fields
1496                          */
1497                         field=mono_class_get_field_from_name(obj_val->vtable->klass, "enabled");
1498                         linger.l_onoff=*(guint8 *)(((char *)obj_val)+field->offset);
1499                         field=mono_class_get_field_from_name(obj_val->vtable->klass, "seconds");
1500                         linger.l_linger=*(guint32 *)(((char *)obj_val)+field->offset);
1501
1502                         valsize=sizeof(linger);
1503                         ret=setsockopt(sock, system_level, system_name,
1504                                        &linger, valsize);
1505                         break;
1506                 case SocketOptionName_AddMembership:
1507                 case SocketOptionName_DropMembership:
1508 #if defined(HAVE_STRUCT_IP_MREQN) || defined(HAVE_STRUCT_IP_MREQ)
1509                 {
1510                         MonoObject *address = NULL;
1511
1512 #ifdef AF_INET6
1513                         if(system_level == SOL_IPV6) {
1514                                 struct ipv6_mreq mreq6;
1515
1516                                 /*
1517                                  *      Get group address
1518                                  */
1519                                 field = mono_class_get_field_from_name (obj_val->vtable->klass, "group");
1520                                 address = *(gpointer *)(((char *)obj_val) + field->offset);
1521
1522                                 if(address) {
1523                                         mreq6.ipv6mr_multiaddr = ipaddress_to_struct_in6_addr (address);
1524                                 }
1525
1526                                 field=mono_class_get_field_from_name(obj_val->vtable->klass, "ifIndex");
1527                                 mreq6.ipv6mr_interface =*(guint64 *)(((char *)obj_val)+field->offset);
1528
1529                                 ret = setsockopt (sock, system_level,
1530                                                   system_name, &mreq6,
1531                                                   sizeof (mreq6));
1532                         } else if(system_level == SOL_IP)
1533 #endif /* AF_INET6 */
1534                         {
1535 #ifdef HAVE_STRUCT_IP_MREQN
1536                                 struct ip_mreqn mreq = {{0}};
1537 #else
1538                                 struct ip_mreq mreq = {{0}};
1539 #endif /* HAVE_STRUCT_IP_MREQN */
1540
1541                                 /* pain! MulticastOption holds two IPAddress
1542                                  * members, so I have to dig the value out of
1543                                  * those :-(
1544                                  */
1545                                 field = mono_class_get_field_from_name (obj_val->vtable->klass, "group");
1546                                 address = *(gpointer *)(((char *)obj_val) + field->offset);
1547
1548                                 /* address might not be defined and if so, set the address to ADDR_ANY.
1549                                  */
1550                                 if(address) {
1551                                         mreq.imr_multiaddr = ipaddress_to_struct_in_addr (address);
1552                                 }
1553
1554                                 field = mono_class_get_field_from_name (obj_val->vtable->klass, "local");
1555                                 address = *(gpointer *)(((char *)obj_val) + field->offset);
1556
1557 #ifdef HAVE_STRUCT_IP_MREQN
1558                                 if(address) {
1559                                         mreq.imr_address = ipaddress_to_struct_in_addr (address);
1560                                 }
1561 #else
1562                                 if(address) {
1563                                         mreq.imr_interface = ipaddress_to_struct_in_addr (address);
1564                                 }
1565 #endif /* HAVE_STRUCT_IP_MREQN */
1566
1567                                 ret = setsockopt (sock, system_level,
1568                                                   system_name, &mreq,
1569                                                   sizeof (mreq));
1570                         }
1571                         break;
1572                 }
1573 #endif /* HAVE_STRUCT_IP_MREQN || HAVE_STRUCT_IP_MREQ */
1574                 default:
1575                         /* Throw an exception */
1576                         mono_raise_exception(get_socket_exception(WSAEINVAL));
1577                 }
1578         } else if (byte_val!=NULL) {
1579                 int valsize=mono_array_length(byte_val);
1580                 guchar *buf=mono_array_addr(byte_val, guchar, 0);
1581
1582                 ret=setsockopt(sock, system_level, system_name, buf, valsize);
1583                 if(ret==SOCKET_ERROR) {
1584                         mono_raise_exception(get_socket_exception(WSAGetLastError()));
1585                 }
1586         } else {
1587                 switch(name) {
1588                         case SocketOptionName_SendTimeout:
1589                         case SocketOptionName_ReceiveTimeout: {
1590                                 struct timeval tv;
1591                                 tv.tv_sec = int_val / 1000;
1592                                 tv.tv_usec = (int_val % 1000) * 1000;
1593                                 ret=setsockopt(sock, system_level, system_name, &tv, sizeof (tv));
1594                                 break;
1595                         }
1596                         default:
1597                                 ret=setsockopt(sock, system_level, system_name, &int_val,
1598                                sizeof(int_val));
1599                 }
1600         }
1601
1602         if(ret==SOCKET_ERROR) {
1603                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1604         }
1605 }
1606
1607 void ves_icall_System_Net_Sockets_Socket_Shutdown_internal(SOCKET sock,
1608                                                            gint32 how)
1609 {
1610         int ret;
1611
1612         MONO_ARCH_SAVE_REGS;
1613
1614         /* Currently, the values for how (recv=0, send=1, both=2) match
1615          * the BSD API
1616          */
1617         ret=shutdown(sock, how);
1618         if(ret==SOCKET_ERROR) {
1619                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1620         }
1621 }
1622
1623 #ifndef AF_INET6
1624 static gboolean hostent_to_IPHostEntry(struct hostent *he, MonoString **h_name,
1625                                        MonoArray **h_aliases,
1626                                        MonoArray **h_addr_list)
1627 {
1628         MonoDomain *domain = mono_domain_get ();
1629         int i;
1630
1631         if(he->h_length!=4 || he->h_addrtype!=AF_INET) {
1632                 return(FALSE);
1633         }
1634
1635         *h_name=mono_string_new(domain, he->h_name);
1636
1637         i=0;
1638         while(he->h_aliases[i]!=NULL) {
1639                 i++;
1640         }
1641
1642         *h_aliases=mono_array_new(domain, mono_defaults.string_class, i);
1643         i=0;
1644         while(he->h_aliases[i]!=NULL) {
1645                 MonoString *alias;
1646
1647                 alias=mono_string_new(domain, he->h_aliases[i]);
1648                 mono_array_set(*h_aliases, MonoString *, i, alias);
1649                 i++;
1650         }
1651
1652         i=0;
1653         while(he->h_addr_list[i]!=NULL) {
1654                 i++;
1655         }
1656
1657         *h_addr_list=mono_array_new(domain, mono_defaults.string_class, i);
1658         i=0;
1659         while(he->h_addr_list[i]!=NULL) {
1660                 MonoString *addr_string;
1661                 char addr[16];
1662
1663                 g_snprintf(addr, 16, "%u.%u.%u.%u",
1664                          (unsigned char)he->h_addr_list[i][0],
1665                          (unsigned char)he->h_addr_list[i][1],
1666                          (unsigned char)he->h_addr_list[i][2],
1667                          (unsigned char)he->h_addr_list[i][3]);
1668
1669                 addr_string=mono_string_new(domain, addr);
1670                 mono_array_set(*h_addr_list, MonoString *, i, addr_string);
1671                 i++;
1672         }
1673
1674         return(TRUE);
1675 }
1676 #endif
1677
1678 #if defined(AF_INET6) && defined(HAVE_GETHOSTBYNAME2_R)
1679 static gboolean hostent_to_IPHostEntry2(struct hostent *he1,struct hostent *he2, MonoString **h_name, MonoArray **h_aliases, MonoArray **h_addr_list)
1680 {
1681         MonoDomain *domain = mono_domain_get ();
1682         int i, host_count, host_index, family_hint;
1683
1684         family_hint = get_family_hint ();
1685
1686         if(he1 == NULL && he2 == NULL) {
1687                 return(FALSE);
1688         }
1689
1690         /*
1691          * Check if address length and family are correct
1692          */
1693         if (he1 != NULL && (he1->h_length!=4 || he1->h_addrtype!=AF_INET)) {
1694                 return(FALSE);
1695         }
1696
1697         if (he2 != NULL && (he2->h_length!=16 || he2->h_addrtype!=AF_INET6)) {
1698                 return(FALSE);
1699         }
1700
1701         /*
1702          * Get the aliases and host name from he1 or he2 whichever is
1703          * not null, if he1 is not null then take aliases from he1
1704          */
1705         if (he1 != NULL && (family_hint == PF_UNSPEC ||
1706                             family_hint == PF_INET)) {
1707                 *h_name=mono_string_new (domain, he1->h_name);
1708
1709                 i=0;
1710                 while(he1->h_aliases[i]!=NULL) {
1711                         i++;
1712                 }
1713
1714                 *h_aliases=mono_array_new (domain, mono_defaults.string_class,
1715                                            i);
1716                 i=0;
1717                 while(he1->h_aliases[i]!=NULL) {
1718                         MonoString *alias;
1719
1720                         alias=mono_string_new (domain, he1->h_aliases[i]);
1721                         mono_array_set (*h_aliases, MonoString *, i, alias);
1722                         i++;
1723                 }
1724         } else if (family_hint == PF_UNSPEC || family_hint == PF_INET6) {
1725                 *h_name=mono_string_new (domain, he2->h_name);
1726
1727                 i=0;
1728                 while(he2->h_aliases [i] != NULL) {
1729                         i++;
1730                 }
1731
1732                 *h_aliases=mono_array_new (domain, mono_defaults.string_class,
1733                                            i);
1734                 i=0;
1735                 while(he2->h_aliases[i]!=NULL) {
1736                         MonoString *alias;
1737
1738                         alias=mono_string_new (domain, he2->h_aliases[i]);
1739                         mono_array_set (*h_aliases, MonoString *, i, alias);
1740                         i++;
1741                 }
1742         }
1743
1744         /*
1745          * Count the number of addresses in he1 + he2
1746          */
1747         host_count = 0;
1748         if (he1 != NULL && (family_hint == PF_UNSPEC ||
1749                             family_hint == PF_INET)) {
1750                 i=0;
1751                 while(he1->h_addr_list[i]!=NULL) {
1752                         i++;
1753                         host_count++;
1754                 }
1755         }
1756
1757         if (he2 != NULL && (family_hint == PF_UNSPEC ||
1758                             family_hint == PF_INET6)) {
1759                 i=0;
1760                 while(he2->h_addr_list[i]!=NULL) {
1761                         i++;
1762                         host_count++;
1763                 }
1764         }
1765
1766         /*
1767          * Fills the array
1768          */
1769         *h_addr_list=mono_array_new (domain, mono_defaults.string_class,
1770                                      host_count);
1771
1772         host_index = 0;
1773
1774         if (he2 != NULL && (family_hint == PF_UNSPEC ||
1775                             family_hint == PF_INET6)) {
1776                 i = 0;
1777                 while(he2->h_addr_list[i] != NULL) {
1778                         MonoString *addr_string;
1779                         char addr[40];
1780
1781                         inet_ntop (AF_INET6, he2->h_addr_list[i], addr,
1782                                    sizeof(addr));
1783
1784                         addr_string = mono_string_new (domain, addr);
1785                         mono_array_set (*h_addr_list, MonoString *, host_index,
1786                                         addr_string);
1787                         i++;
1788                         host_index++;
1789                 }
1790         }
1791
1792         if (he1 != NULL && (family_hint == PF_UNSPEC ||
1793                             family_hint == PF_INET)) {
1794                 i=0;
1795                 while(he1->h_addr_list[i] != NULL) {
1796                         MonoString *addr_string;
1797                         char addr[17];
1798
1799                         inet_ntop (AF_INET, he1->h_addr_list[i], addr,
1800                                    sizeof(addr));
1801
1802                         addr_string=mono_string_new (domain, addr);
1803                         mono_array_set (*h_addr_list, MonoString *, host_index,
1804                                         addr_string);
1805                         i++;
1806                         host_index++;
1807                 }
1808         }
1809
1810         return(TRUE);
1811 }
1812 #endif
1813
1814 #if defined(AF_INET6)
1815 static gboolean
1816 addrinfo_to_IPHostEntry(struct addrinfo *info, MonoString **h_name,
1817                                                 MonoArray **h_aliases,
1818                                                 MonoArray **h_addr_list)
1819 {
1820         gint32 count, i;
1821         struct addrinfo *ai = NULL;
1822
1823         MonoDomain *domain = mono_domain_get ();
1824
1825         for (count=0, ai=info; ai!=NULL; ai=ai->ai_next) {
1826                 if((ai->ai_family != PF_INET) && (ai->ai_family != PF_INET6)) {
1827                         continue;
1828                 }
1829
1830                 count++;
1831         }
1832
1833         *h_aliases=mono_array_new(domain, mono_defaults.string_class, 0);
1834         *h_addr_list=mono_array_new(domain, mono_defaults.string_class, count);
1835
1836         for (ai=info, i=0; ai!=NULL; ai=ai->ai_next) {
1837                 MonoString *addr_string;
1838                 const char *ret;
1839                 char *buffer;
1840                 gint32 buffer_size = 0;
1841
1842                 if((ai->ai_family != PF_INET) && (ai->ai_family != PF_INET6)) {
1843                         continue;
1844                 }
1845
1846                 buffer_size = 256;
1847                 do {
1848                         buffer = g_malloc0(buffer_size);
1849
1850                         if(ai->ai_family == PF_INET) {
1851                                 ret = inet_ntop(ai->ai_family, (void*)&(((struct sockaddr_in*)ai->ai_addr)->sin_addr), buffer, buffer_size);
1852                         } else {
1853                                 ret = inet_ntop(ai->ai_family, (void*)&(((struct sockaddr_in6*)ai->ai_addr)->sin6_addr), buffer, buffer_size);
1854                         }
1855
1856                         if(ret == 0) {
1857                                 g_free(buffer);
1858                                 buffer_size += 256;
1859                         }
1860                 } while(ret == 0 && errno == ENOSPC);
1861
1862                 if(ret) {
1863                         addr_string=mono_string_new(domain, buffer);
1864                         g_free(buffer);
1865                 } else {
1866                         addr_string=mono_string_new(domain, "");
1867                 }
1868
1869                 mono_array_set(*h_addr_list, MonoString *, i, addr_string);
1870
1871                 if(!i) {
1872                         *h_name=mono_string_new(domain, ai->ai_canonname);
1873                 }
1874
1875                 i++;
1876         }
1877
1878         if(info) {
1879                 freeaddrinfo(info);
1880         }
1881
1882         return(TRUE);
1883 }
1884 #endif
1885
1886 #ifdef AF_INET6
1887 MonoBoolean ves_icall_System_Net_Dns_GetHostByName_internal(MonoString *host, MonoString **h_name, MonoArray **h_aliases, MonoArray **h_addr_list)
1888 {
1889 #if !defined(HAVE_GETHOSTBYNAME2_R)
1890         struct addrinfo *info = NULL, hints;
1891         char *hostname;
1892
1893         MONO_ARCH_SAVE_REGS;
1894
1895         hostname=mono_string_to_utf8 (host);
1896
1897         memset(&hints, 0, sizeof(hints));
1898         hints.ai_family = get_family_hint ();
1899         hints.ai_socktype = SOCK_STREAM;
1900         hints.ai_flags = AI_CANONNAME;
1901
1902         if (getaddrinfo(hostname, NULL, &hints, &info) == -1) {
1903                 return(FALSE);
1904         }
1905
1906         g_free(hostname);
1907
1908         return(addrinfo_to_IPHostEntry(info, h_name, h_aliases, h_addr_list));
1909 #else
1910         struct hostent he1,*hp1, he2, *hp2;
1911         int buffer_size1, buffer_size2;
1912         char *buffer1, *buffer2;
1913         int herr;
1914         gboolean return_value;
1915         char *hostname;
1916
1917         MONO_ARCH_SAVE_REGS;
1918
1919         hostname=mono_string_to_utf8 (host);
1920
1921         buffer_size1 = 512;
1922         buffer_size2 = 512;
1923         buffer1 = g_malloc0(buffer_size1);
1924         buffer2 = g_malloc0(buffer_size2);
1925
1926         while (gethostbyname2_r(hostname, AF_INET, &he1, buffer1, buffer_size1,
1927                                 &hp1, &herr) == ERANGE) {
1928                 buffer_size1 *= 2;
1929                 buffer1 = g_realloc(buffer1, buffer_size1);
1930         }
1931
1932         while (gethostbyname2_r(hostname, AF_INET6, &he2, buffer2,
1933                                 buffer_size2, &hp2, &herr) == ERANGE) {
1934                 buffer_size2 *= 2;
1935                 buffer2 = g_realloc(buffer2, buffer_size2);
1936         }
1937
1938         return_value = hostent_to_IPHostEntry2(hp1, hp2, h_name, h_aliases,
1939                                                h_addr_list);
1940
1941         g_free(buffer1);
1942         g_free(buffer2);
1943
1944         return(return_value);
1945 #endif /* HAVE_GETHOSTBYNAME2_R */
1946 }
1947 #else /* AF_INET6 */
1948 MonoBoolean ves_icall_System_Net_Dns_GetHostByName_internal(MonoString *host, MonoString **h_name, MonoArray **h_aliases, MonoArray **h_addr_list)
1949 {
1950         struct hostent *he;
1951         char *hostname;
1952
1953         MONO_ARCH_SAVE_REGS;
1954
1955         hostname=mono_string_to_utf8(host);
1956
1957         he=gethostbyname(hostname);
1958         g_free(hostname);
1959
1960         if(he==NULL) {
1961                 return(FALSE);
1962         }
1963
1964         return(hostent_to_IPHostEntry(he, h_name, h_aliases, h_addr_list));
1965 }
1966 #endif /* AF_INET6 */
1967
1968 #ifndef HAVE_INET_PTON
1969 static int
1970 inet_pton (int family, const char *address, void *inaddrp)
1971 {
1972         if (family == AF_INET) {
1973 #ifdef HAVE_INET_ATON
1974                 struct in_addr inaddr;
1975
1976                 if (!inet_aton (address, &inaddr))
1977                         return 0;
1978
1979                 memcpy (inaddrp, &inaddr, sizeof (struct in_addr));
1980                 return 1;
1981 #else
1982                 /* assume the system has inet_addr(), if it doesn't
1983                    have that we're pretty much screwed... */
1984                 guint32 inaddr;
1985
1986                 if (!strcmp (address, "255.255.255.255")) {
1987                         /* special-case hack */
1988                         inaddr = 0xffffffff;
1989                 } else {
1990                         inaddr = inet_addr (address);
1991 #ifndef INADDR_NONE
1992 #define INADDR_NONE ((in_addr_t) -1)
1993 #endif
1994                         if (inaddr == INADDR_NONE)
1995                                 return 0;
1996                 }
1997
1998                 memcpy (inaddrp, &inaddr, sizeof (guint32));
1999                 return 1;
2000 #endif /* HAVE_INET_ATON */
2001         }
2002
2003         return -1;
2004 }
2005 #endif /* !HAVE_INET_PTON */
2006
2007 extern MonoBoolean ves_icall_System_Net_Dns_GetHostByAddr_internal(MonoString *addr, MonoString **h_name, MonoArray **h_aliases, MonoArray **h_addr_list)
2008 {
2009         char *address;
2010
2011 #ifdef AF_INET6
2012         struct sockaddr_in saddr;
2013         struct sockaddr_in6 saddr6;
2014         struct addrinfo *info = NULL, hints;
2015         gint32 family;
2016         char hostname[1024] = {0};
2017 #else
2018         struct in_addr inaddr;
2019         struct hostent *he;
2020 #endif
2021
2022         MONO_ARCH_SAVE_REGS;
2023
2024         address = mono_string_to_utf8 (addr);
2025
2026 #ifdef AF_INET6
2027         if (inet_pton (AF_INET, address, &saddr.sin_addr ) <= 0) {
2028                 /* Maybe an ipv6 address */
2029                 if (inet_pton (AF_INET6, address, &saddr6.sin6_addr) <= 0) {
2030                         g_free (address);
2031                         return FALSE;
2032                 }
2033                 else {
2034                         family = AF_INET6;
2035                         saddr6.sin6_family = AF_INET6;
2036                 }
2037         }
2038         else {
2039                 family = AF_INET;
2040                 saddr.sin_family = AF_INET;
2041         }
2042         g_free(address);
2043
2044         if(family == AF_INET) {
2045                 if(getnameinfo ((struct sockaddr*)&saddr, sizeof(saddr),
2046                                 hostname, sizeof(hostname), NULL, 0,
2047                                 NI_NAMEREQD) != 0) {
2048                         return(FALSE);
2049                 }
2050         } else if(family == AF_INET6) {
2051                 if(getnameinfo ((struct sockaddr*)&saddr6, sizeof(saddr6),
2052                                 hostname, sizeof(hostname), NULL, 0,
2053                                 NI_NAMEREQD) != 0) {
2054                         return(FALSE);
2055                 }
2056         }
2057
2058         memset (&hints, 0, sizeof(hints));
2059         hints.ai_family = get_family_hint ();
2060         hints.ai_socktype = SOCK_STREAM;
2061         hints.ai_flags = AI_CANONNAME;
2062
2063         if( getaddrinfo (hostname, NULL, &hints, &info) == -1 ) {
2064                 return(FALSE);
2065         }
2066
2067         return(addrinfo_to_IPHostEntry (info, h_name, h_aliases, h_addr_list));
2068 #else
2069         if (inet_pton (AF_INET, address, &inaddr) <= 0) {
2070                 g_free (address);
2071                 return(FALSE);
2072         }
2073         g_free (address);
2074
2075         if ((he = gethostbyaddr ((char *) &inaddr, sizeof (inaddr), AF_INET)) == NULL) {
2076                 return(FALSE);
2077         }
2078
2079         return(hostent_to_IPHostEntry (he, h_name, h_aliases, h_addr_list));
2080 #endif
2081 }
2082
2083 extern MonoBoolean ves_icall_System_Net_Dns_GetHostName_internal(MonoString **h_name)
2084 {
2085         guchar hostname[256];
2086         int ret;
2087
2088         MONO_ARCH_SAVE_REGS;
2089
2090         ret=gethostname (hostname, sizeof(hostname));
2091         if(ret==-1) {
2092                 return(FALSE);
2093         }
2094
2095         *h_name=mono_string_new(mono_domain_get (), hostname);
2096
2097         return(TRUE);
2098 }
2099
2100
2101 void mono_network_init(void)
2102 {
2103         WSADATA wsadata;
2104         int err;
2105
2106         err=WSAStartup(MAKEWORD(2,0), &wsadata);
2107         if(err!=0) {
2108                 g_error(G_GNUC_PRETTY_FUNCTION ": Couldn't initialise networking");
2109                 exit(-1);
2110         }
2111
2112 #ifdef DEBUG
2113         g_message(G_GNUC_PRETTY_FUNCTION ": Using socket library: %s", wsadata.szDescription);
2114         g_message(G_GNUC_PRETTY_FUNCTION ": Socket system status: %s", wsadata.szSystemStatus);
2115 #endif
2116 }
2117
2118 void mono_network_cleanup(void)
2119 {
2120         WSACleanup();
2121 }