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
  17 #include <mono/metadata/object.h>
  18 #include <mono/io-layer/io-layer.h>
  19 #include <mono/metadata/socket-io.h>
  20 #include <mono/metadata/exception.h>
  21 #include <mono/metadata/appdomain.h>
  22
  23 #include <sys/time.h>
  24
  25 #ifdef HAVE_NETDB_H
  26 #include <netdb.h>
  27 #endif
  28 #ifdef HAVE_SYS_FILIO_H
  29 #include <sys/filio.h>     /* defines FIONBIO and FIONREAD */
  30 #endif
  31 #ifdef HAVE_SYS_SOCKIO_H
  32 #include <sys/sockio.h>    /* defines SIOCATMARK */
  33 #endif
  34 #ifdef HAVE_SYS_UN_H
  35 #include <sys/un.h>
  36 #endif
  37
  38
  39
  40 #undef DEBUG
  41
  42 static gint32 convert_family(MonoAddressFamily mono_family)
  43 {
  44         gint32 family=-1;
  45
  46         switch(mono_family) {
  47         case AddressFamily_Unknown:
  48         case AddressFamily_ImpLink:
  49         case AddressFamily_Pup:
  50         case AddressFamily_Chaos:
  51         case AddressFamily_Iso:
  52         case AddressFamily_Ecma:
  53         case AddressFamily_DataKit:
  54         case AddressFamily_Ccitt:
  55         case AddressFamily_DataLink:
  56         case AddressFamily_Lat:
  57         case AddressFamily_HyperChannel:
  58         case AddressFamily_NetBios:
  59         case AddressFamily_VoiceView:
  60         case AddressFamily_FireFox:
  61         case AddressFamily_Banyan:
  62         case AddressFamily_Atm:
  63         case AddressFamily_Cluster:
  64         case AddressFamily_Ieee12844:
  65         case AddressFamily_NetworkDesigners:
  66                 g_warning("System.Net.Sockets.AddressFamily has unsupported value 0x%x", mono_family);
  67                 break;
  68
  69         case AddressFamily_Unspecified:
  70                 family=AF_UNSPEC;
  71                 break;
  72
  73         case AddressFamily_Unix:
  74                 family=AF_UNIX;
  75                 break;
  76
  77         case AddressFamily_InterNetwork:
  78                 family=AF_INET;
  79                 break;
  80
  81         case AddressFamily_Ipx:
  82                 family=AF_IPX;
  83                 break;
  84
  85         case AddressFamily_Sna:
  86                 family=AF_SNA;
  87                 break;
  88
  89         case AddressFamily_DecNet:
  90                 family=AF_DECnet;
  91                 break;
  92
  93         case AddressFamily_AppleTalk:
  94                 family=AF_APPLETALK;
  95                 break;
  96
  97         case AddressFamily_InterNetworkV6:
  98                 family=AF_INET6;
  99                 break;
 100 #ifdef AF_IRDA
 101         case AddressFamily_Irda:
 102                 family=AF_IRDA;
 103                 break;
 104 #endif
 105         default:
 106                 g_warning("System.Net.Sockets.AddressFamily has unknown value 0x%x", mono_family);
 107         }
 108
 109         return(family);
 110 }
 111
 112 static MonoAddressFamily convert_to_mono_family(guint16 af_family)
 113 {
 114         MonoAddressFamily family=AddressFamily_Unknown;
 115
 116         switch(af_family) {
 117         case AF_UNSPEC:
 118                 family=AddressFamily_Unspecified;
 119                 break;
 120
 121         case AF_UNIX:
 122                 family=AddressFamily_Unix;
 123                 break;
 124
 125         case AF_INET:
 126                 family=AddressFamily_InterNetwork;
 127                 break;
 128
 129         case AF_IPX:
 130                 family=AddressFamily_Ipx;
 131                 break;
 132
 133         case AF_SNA:
 134                 family=AddressFamily_Sna;
 135                 break;
 136
 137         case AF_DECnet:
 138                 family=AddressFamily_DecNet;
 139                 break;
 140
 141         case AF_APPLETALK:
 142                 family=AddressFamily_AppleTalk;
 143                 break;
 144
 145         case AF_INET6:
 146                 family=AddressFamily_InterNetworkV6;
 147                 break;
 148
 149 #ifdef AF_IRDA
 150         case AF_IRDA:
 151                 family=AddressFamily_Irda;
 152                 break;
 153 #endif
 154         default:
 155                 g_warning("unknown address family 0x%x", af_family);
 156         }
 157
 158         return(family);
 159 }
 160
 161 static gint32 convert_type(MonoSocketType mono_type)
 162 {
 163         gint32 type=-1;
 164
 165         switch(mono_type) {
 166         case SocketType_Stream:
 167                 type=SOCK_STREAM;
 168                 break;
 169
 170         case SocketType_Dgram:
 171                 type=SOCK_DGRAM;
 172                 break;
 173
 174         case SocketType_Raw:
 175                 type=SOCK_RAW;
 176                 break;
 177
 178         case SocketType_Rdm:
 179                 type=SOCK_RDM;
 180                 break;
 181
 182         case SocketType_Seqpacket:
 183                 type=SOCK_SEQPACKET;
 184                 break;
 185
 186         case SocketType_Unknown:
 187                 g_warning("System.Net.Sockets.SocketType has unsupported value 0x%x", mono_type);
 188                 break;
 189
 190         default:
 191                 g_warning("System.Net.Sockets.SocketType has unknown value 0x%x", mono_type);
 192         }
 193
 194         return(type);
 195 }
 196
 197 static gint32 convert_proto(MonoProtocolType mono_proto)
 198 {
 199         gint32 proto=-1;
 200
 201         switch(mono_proto) {
 202         case ProtocolType_IP:
 203         case ProtocolType_Icmp:
 204         case ProtocolType_Igmp:
 205         case ProtocolType_Ggp:
 206         case ProtocolType_Tcp:
 207         case ProtocolType_Pup:
 208         case ProtocolType_Udp:
 209         case ProtocolType_Idp:
 210                 /* These protocols are known (on my system at least) */
 211                 proto=mono_proto;
 212                 break;
 213
 214         case ProtocolType_ND:
 215         case ProtocolType_Raw:
 216         case ProtocolType_Ipx:
 217         case ProtocolType_Spx:
 218         case ProtocolType_SpxII:
 219         case ProtocolType_Unknown:
 220                 /* These protocols arent */
 221                 g_warning("System.Net.Sockets.ProtocolType has unsupported value 0x%x", mono_proto);
 222                 break;
 223
 224         default:
 225                 break;
 226         }
 227
 228         return(proto);
 229 }
 230
 231 static gint32 convert_sockopt_level_and_name(MonoSocketOptionLevel mono_level,
 232                                              MonoSocketOptionName mono_name,
 233                                              int *system_level,
 234                                              int *system_name)
 235 {
 236         switch (mono_level) {
 237         case SocketOptionLevel_Socket:
 238                 *system_level = SOL_SOCKET;
 239
 240                 switch(mono_name) {
 241                 case SocketOptionName_DontLinger:
 242                         /* This is SO_LINGER, because the setsockopt
 243                          * internal call maps DontLinger to SO_LINGER
 244                          * with l_onoff=0
 245                          */
 246                         *system_name = SO_LINGER;
 247                         break;
 248                 case SocketOptionName_Debug:
 249                         *system_name = SO_DEBUG;
 250                         break;
 251 #ifdef SO_ACCEPTCONN
 252                 case SocketOptionName_AcceptConnection:
 253                         *system_name = SO_ACCEPTCONN;
 254                         break;
 255 #endif
 256                 case SocketOptionName_ReuseAddress:
 257                         *system_name = SO_REUSEADDR;
 258                         break;
 259                 case SocketOptionName_KeepAlive:
 260                         *system_name = SO_KEEPALIVE;
 261                         break;
 262                 case SocketOptionName_DontRoute:
 263                         *system_name = SO_DONTROUTE;
 264                         break;
 265                 case SocketOptionName_Broadcast:
 266                         *system_name = SO_BROADCAST;
 267                         break;
 268                 case SocketOptionName_Linger:
 269                         *system_name = SO_LINGER;
 270                         break;
 271                 case SocketOptionName_OutOfBandInline:
 272                         *system_name = SO_OOBINLINE;
 273                         break;
 274                 case SocketOptionName_SendBuffer:
 275                         *system_name = SO_SNDBUF;
 276                         break;
 277                 case SocketOptionName_ReceiveBuffer:
 278                         *system_name = SO_RCVBUF;
 279                         break;
 280                 case SocketOptionName_SendLowWater:
 281                         *system_name = SO_SNDLOWAT;
 282                         break;
 283                 case SocketOptionName_ReceiveLowWater:
 284                         *system_name = SO_RCVLOWAT;
 285                         break;
 286                 case SocketOptionName_SendTimeout:
 287                         *system_name = SO_SNDTIMEO;
 288                         break;
 289                 case SocketOptionName_ReceiveTimeout:
 290                         *system_name = SO_RCVTIMEO;
 291                         break;
 292                 case SocketOptionName_Error:
 293                         *system_name = SO_ERROR;
 294                         break;
 295                 case SocketOptionName_Type:
 296                         *system_name = SO_TYPE;
 297                         break;
 298                 case SocketOptionName_ExclusiveAddressUse:
 299                 case SocketOptionName_UseLoopback:
 300                 case SocketOptionName_MaxConnections:
 301                         /* Can't figure out how to map these, so fall
 302                          * through
 303                          */
 304                 default:
 305                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at Socket level", mono_name);
 306                         return(-1);
 307                 }
 308                 break;
 309
 310         case SocketOptionLevel_IP:
 311 #ifdef HAVE_SOL_IP
 312                 *system_level = SOL_IP;
 313 #else
 314                 if (1) {
 315                         static int cached = 0;
 316                         static int proto;
 317
 318                         if (!cached) {
 319                                 struct protoent *pent;
 320
 321                                 pent = getprotobyname ("IP");
 322                                 proto = pent ? pent->p_proto : 0 /* 0 a good default value?? */;
 323                                 cached = 1;
 324                         }
 325
 326                         *system_level = proto;
 327                 }
 328 #endif /* HAVE_SOL_IP */
 329
 330                 switch(mono_name) {
 331                 case SocketOptionName_IPOptions:
 332                         *system_name = IP_OPTIONS;
 333                         break;
 334 #ifdef IP_HDRINCL
 335                 case SocketOptionName_HeaderIncluded:
 336                         *system_name = IP_HDRINCL;
 337                         break;
 338 #endif
 339 #ifdef IP_TOS
 340                 case SocketOptionName_TypeOfService:
 341                         *system_name = IP_TOS;
 342                         break;
 343 #endif
 344 #ifdef IP_TTL
 345                 case SocketOptionName_IpTimeToLive:
 346                         *system_name = IP_TTL;
 347                         break;
 348 #endif
 349                 case SocketOptionName_MulticastInterface:
 350                         *system_name = IP_MULTICAST_IF;
 351                         break;
 352                 case SocketOptionName_MulticastTimeToLive:
 353                         *system_name = IP_MULTICAST_TTL;
 354                         break;
 355                 case SocketOptionName_MulticastLoopback:
 356                         *system_name = IP_MULTICAST_LOOP;
 357                         break;
 358                 case SocketOptionName_AddMembership:
 359                         *system_name = IP_ADD_MEMBERSHIP;
 360                         break;
 361                 case SocketOptionName_DropMembership:
 362                         *system_name = IP_DROP_MEMBERSHIP;
 363                         break;
 364 #ifdef HAVE_IP_PKTINFO
 365                 case SocketOptionName_PacketInformation:
 366                         *system_name = IP_PKTINFO;
 367                         break;
 368 #endif /* HAVE_IP_PKTINFO */
 369                 case SocketOptionName_DontFragment:
 370                 case SocketOptionName_AddSourceMembership:
 371                 case SocketOptionName_DropSourceMembership:
 372                 case SocketOptionName_BlockSource:
 373                 case SocketOptionName_UnblockSource:
 374                         /* Can't figure out how to map these, so fall
 375                          * through
 376                          */
 377                 default:
 378                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at IP level", mono_name);
 379                         return(-1);
 380                 }
 381                 break;
 382
 383         case SocketOptionLevel_Tcp:
 384 #ifdef HAVE_SOL_TCP
 385                 *system_level = SOL_TCP;
 386 #else
 387                 if (1) {
 388                         static int cached = 0;
 389                         static int proto;
 390
 391                         if (!cached) {
 392                                 struct protoent *pent;
 393
 394                                 pent = getprotobyname ("TCP");
 395                                 proto = pent ? pent->p_proto : 6 /* is 6 a good default value?? */;
 396                                 cached = 1;
 397                         }
 398
 399                         *system_level = proto;
 400                 }
 401 #endif /* HAVE_SOL_TCP */
 402
 403                 switch(mono_name) {
 404                 case SocketOptionName_NoDelay:
 405                         *system_name = TCP_NODELAY;
 406                         break;
 407 #if 0
 408                         /* The documentation is talking complete
 409                          * bollocks here: rfc-1222 is titled
 410                          * 'Advancing the NSFNET Routing Architecture'
 411                          * and doesn't mention either of the words
 412                          * "expedite" or "urgent".
 413                          */
 414                 case SocketOptionName_BsdUrgent:
 415                 case SocketOptionName_Expedited:
 416 #endif
 417                 default:
 418                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at TCP level", mono_name);
 419                         return(-1);
 420                 }
 421                 break;
 422
 423         case SocketOptionLevel_Udp:
 424                 g_warning("System.Net.Sockets.SocketOptionLevel has unsupported value 0x%x", mono_level);
 425
 426                 switch(mono_name) {
 427                 case SocketOptionName_NoChecksum:
 428                 case SocketOptionName_ChecksumCoverage:
 429                 default:
 430                         g_warning("System.Net.Sockets.SocketOptionName 0x%x is not supported at UDP level", mono_name);
 431                         return(-1);
 432                 }
 433                 return(-1);
 434                 break;
 435
 436         default:
 437                 g_warning("System.Net.Sockets.SocketOptionLevel has unknown value 0x%x", mono_level);
 438                 return(-1);
 439         }
 440
 441         return(0);
 442 }
 443
 444 #define STASH_SYS_ASS(this) \
 445         if(system_assembly == NULL) { \
 446                 system_assembly=this->vtable->klass->image; \
 447         }
 448
 449 static MonoImage *system_assembly=NULL;
 450
 451 static MonoException *get_socket_exception(guint32 error_code)
 452 {
 453         /* Don't cache this exception, because we need the object
 454          * constructor to set up the message from the sockets error code.
 455          */
 456         MonoException *ex;
 457
 458         /* This is a bit of a kludge.  The SocketException 0-arg
 459          * constructor calls WSAGetLastError() to find the error code
 460          * to use.  Until we can init objects with parameters, this
 461          * will have to do.
 462          */
 463         WSASetLastError(error_code);
 464
 465         ex=(MonoException *)mono_exception_from_name(system_assembly,
 466                                                      "System.Net.Sockets",
 467                                                      "SocketException");
 468         return(ex);
 469 }
 470
 471 gpointer ves_icall_System_Net_Sockets_Socket_Socket_internal(MonoObject *this, gint32 family, gint32 type, gint32 proto)
 472 {
 473         SOCKET sock;
 474         gint32 sock_family;
 475         gint32 sock_proto;
 476         gint32 sock_type;
 477         int ret;
 478         int true=1;
 479
 480         MONO_ARCH_SAVE_REGS;
 481
 482         STASH_SYS_ASS(this);
 483
 484         sock_family=convert_family(family);
 485         if(sock_family==-1) {
 486                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 487                 return(NULL);
 488         }
 489
 490         sock_proto=convert_proto(proto);
 491         if(sock_proto==-1) {
 492                 mono_raise_exception(get_socket_exception(WSAEPROTONOSUPPORT));
 493                 return(NULL);
 494         }
 495
 496         sock_type=convert_type(type);
 497         if(sock_type==-1) {
 498                 mono_raise_exception(get_socket_exception(WSAESOCKTNOSUPPORT));
 499                 return(NULL);
 500         }
 501
 502         sock=socket(sock_family, sock_type, sock_proto);
 503         if(sock==INVALID_SOCKET) {
 504                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 505                 return(NULL);
 506         }
 507
 508         if (sock_family == AF_INET && sock_type == SOCK_DGRAM)
 509                 return (GUINT_TO_POINTER (sock));
 510
 511         /* .net seems to set this by default for SOCK_STREAM,
 512          * not for SOCK_DGRAM (see bug #36322) */
 513         ret=setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &true, sizeof(true));
 514         if(ret==SOCKET_ERROR) {
 515                 closesocket(sock);
 516                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 517                 return(NULL);
 518         }
 519
 520         return(GUINT_TO_POINTER (sock));
 521 }
 522
 523 /* FIXME: the SOCKET parameter (here and in other functions in this
 524  * file) is really an IntPtr which needs to be converted to a guint32.
 525  */
 526 void ves_icall_System_Net_Sockets_Socket_Close_internal(SOCKET sock)
 527 {
 528         MONO_ARCH_SAVE_REGS;
 529
 530 #ifdef DEBUG
 531         g_message (G_GNUC_PRETTY_FUNCTION ": closing 0x%x", sock);
 532 #endif
 533
 534         closesocket(sock);
 535 }
 536
 537 gint32 ves_icall_System_Net_Sockets_SocketException_WSAGetLastError_internal(void)
 538 {
 539         MONO_ARCH_SAVE_REGS;
 540
 541 #ifdef DEBUG
 542         g_message(G_GNUC_PRETTY_FUNCTION ": returning %d", WSAGetLastError());
 543 #endif
 544
 545         return(WSAGetLastError());
 546 }
 547
 548 gint32 ves_icall_System_Net_Sockets_Socket_Available_internal(SOCKET sock)
 549 {
 550         int ret, amount;
 551
 552         MONO_ARCH_SAVE_REGS;
 553
 554         ret=ioctlsocket(sock, FIONREAD, &amount);
 555         if(ret==SOCKET_ERROR) {
 556                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 557                 return(0);
 558         }
 559
 560         return(amount);
 561 }
 562
 563 void ves_icall_System_Net_Sockets_Socket_Blocking_internal(SOCKET sock,
 564                                                            gboolean block)
 565 {
 566         int ret;
 567
 568         MONO_ARCH_SAVE_REGS;
 569
 570         ret=ioctlsocket(sock, FIONBIO, &block);
 571         if(ret==SOCKET_ERROR) {
 572                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 573         }
 574 }
 575
 576 gpointer ves_icall_System_Net_Sockets_Socket_Accept_internal(SOCKET sock)
 577 {
 578         SOCKET newsock;
 579
 580         MONO_ARCH_SAVE_REGS;
 581
 582         newsock=accept(sock, NULL, 0);
 583         if(newsock==INVALID_SOCKET) {
 584                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 585                 return(NULL);
 586         }
 587
 588         return(GUINT_TO_POINTER (newsock));
 589 }
 590
 591 void ves_icall_System_Net_Sockets_Socket_Listen_internal(SOCKET sock,
 592                                                          guint32 backlog)
 593 {
 594         int ret;
 595
 596         MONO_ARCH_SAVE_REGS;
 597
 598         ret=listen(sock, backlog);
 599         if(ret==SOCKET_ERROR) {
 600                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 601         }
 602 }
 603
 604 static MonoObject *create_object_from_sockaddr(struct sockaddr *saddr,
 605                                                int sa_size)
 606 {
 607         MonoDomain *domain = mono_domain_get ();
 608         MonoObject *sockaddr_obj;
 609         MonoClass *sockaddr_class;
 610         MonoClassField *field;
 611         MonoArray *data;
 612         MonoAddressFamily family;
 613
 614         /* Build a System.Net.SocketAddress object instance */
 615         sockaddr_class=mono_class_from_name(system_assembly, "System.Net", "SocketAddress");
 616         sockaddr_obj=mono_object_new(domain, sockaddr_class);
 617
 618         /* Locate the SocketAddress data buffer in the object */
 619         field=mono_class_get_field_from_name(sockaddr_class, "data");
 620
 621         /* Make sure there is space for the family and size bytes */
 622         data=mono_array_new(domain, mono_defaults.byte_class, sa_size+2);
 623
 624         /* The data buffer is laid out as follows:
 625          * byte 0 is the address family
 626          * byte 1 is the buffer length
 627          * bytes 2 and 3 are the port info
 628          * the rest is the address info
 629          */
 630
 631         family=convert_to_mono_family(saddr->sa_family);
 632         if(family==AddressFamily_Unknown) {
 633                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 634                 return(NULL);
 635         }
 636
 637         mono_array_set(data, guint8, 0, family & 0x0FF);
 638         mono_array_set(data, guint8, 1, ((family << 8) & 0x0FFFF));
 639
 640         if(saddr->sa_family==AF_INET) {
 641                 struct sockaddr_in *sa_in=(struct sockaddr_in *)saddr;
 642                 guint16 port=ntohs(sa_in->sin_port);
 643                 guint32 address=ntohl(sa_in->sin_addr.s_addr);
 644
 645                 if(sa_size<8) {
 646                         mono_raise_exception((MonoException *)mono_exception_from_name(mono_defaults.corlib, "System", "SystemException"));
 647                 }
 648
 649                 mono_array_set(data, guint8, 2, (port>>8) & 0xff);
 650                 mono_array_set(data, guint8, 3, (port) & 0xff);
 651                 mono_array_set(data, guint8, 4, (address>>24) & 0xff);
 652                 mono_array_set(data, guint8, 5, (address>>16) & 0xff);
 653                 mono_array_set(data, guint8, 6, (address>>8) & 0xff);
 654                 mono_array_set(data, guint8, 7, (address) & 0xff);
 655
 656                 *(MonoArray **)(((char *)sockaddr_obj) + field->offset)=data;
 657
 658                 return(sockaddr_obj);
 659 #ifdef HAVE_SYS_UN_H
 660         } else if (saddr->sa_family == AF_UNIX) {
 661                 int i;
 662
 663                 for (i = 0; i < sa_size; i++)
 664                         mono_array_set (data, guint8, i + 2, saddr->sa_data [i]);
 665
 666                 *(MonoArray **)(((char *)sockaddr_obj) + field->offset) = data;
 667
 668                 return sockaddr_obj;
 669 #endif
 670         } else {
 671                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 672                 return(NULL);
 673         }
 674 }
 675
 676 extern MonoObject *ves_icall_System_Net_Sockets_Socket_LocalEndPoint_internal(SOCKET sock)
 677 {
 678         struct sockaddr sa;
 679         int salen;
 680         int ret;
 681
 682         MONO_ARCH_SAVE_REGS;
 683
 684         salen=sizeof(struct sockaddr);
 685         ret=getsockname(sock, &sa, &salen);
 686
 687         if(ret==SOCKET_ERROR) {
 688                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 689         }
 690
 691 #ifdef DEBUG
 692         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));
 693 #endif
 694
 695         return(create_object_from_sockaddr(&sa, salen));
 696 }
 697
 698 extern MonoObject *ves_icall_System_Net_Sockets_Socket_RemoteEndPoint_internal(SOCKET sock)
 699 {
 700         struct sockaddr sa;
 701         int salen;
 702         int ret;
 703
 704         MONO_ARCH_SAVE_REGS;
 705
 706         salen=sizeof(struct sockaddr);
 707         ret=getpeername(sock, &sa, &salen);
 708
 709         if(ret==SOCKET_ERROR) {
 710                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 711         }
 712
 713 #ifdef DEBUG
 714         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));
 715 #endif
 716
 717         return(create_object_from_sockaddr(&sa, salen));
 718 }
 719
 720 static struct sockaddr *create_sockaddr_from_object(MonoObject *saddr_obj,
 721                                                     int *sa_size)
 722 {
 723         MonoClassField *field;
 724         MonoArray *data;
 725         gint32 family;
 726         int len;
 727
 728         /* Dig the SocketAddress data buffer out of the object */
 729         field=mono_class_get_field_from_name(saddr_obj->vtable->klass, "data");
 730         data=*(MonoArray **)(((char *)saddr_obj) + field->offset);
 731
 732         /* The data buffer is laid out as follows:
 733          * byte 0 is the address family low byte
 734          * byte 1 is the address family high byte
 735          * INET:
 736          *      bytes 2 and 3 are the port info
 737          *      the rest is the address info
 738          * UNIX:
 739          *      the rest is the file name
 740          */
 741         len = mono_array_length (data);
 742         if (len < 2) {
 743                 mono_raise_exception (mono_exception_from_name(mono_defaults.corlib, "System", "SystemException"));
 744         }
 745
 746         family = convert_family (mono_array_get (data, guint16, 0));
 747         if(family==AF_INET) {
 748                 struct sockaddr_in *sa=g_new0(struct sockaddr_in, 1);
 749                 guint16 port=(mono_array_get(data, guint8, 2) << 8) +
 750                         mono_array_get(data, guint8, 3);
 751                 guint32 address=(mono_array_get(data, guint8, 4) << 24) +
 752                         (mono_array_get(data, guint8, 5) << 16 ) +
 753                         (mono_array_get(data, guint8, 6) << 8) +
 754                         mono_array_get(data, guint8, 7);
 755
 756                 sa->sin_family=family;
 757                 sa->sin_addr.s_addr=htonl(address);
 758                 sa->sin_port=htons(port);
 759
 760                 *sa_size=sizeof(struct sockaddr_in);
 761                 return((struct sockaddr *)sa);
 762 #ifdef HAVE_SYS_UN_H
 763         } else if (family == AF_UNIX) {
 764                 struct sockaddr_un *sun = g_new0 (struct sockaddr_un, 1);
 765                 int i;
 766
 767                 if (len - 2 > MONO_SIZEOF_SUNPATH)
 768                         mono_raise_exception (mono_get_exception_index_out_of_range ());
 769
 770                 sun->sun_family = family;
 771                 for (i = 0; i < len - 2; i++)
 772                         sun->sun_path [i] = mono_array_get (data, guint8, i + 2);
 773                 sun->sun_path [len - 2] = '\0';
 774                 *sa_size = sizeof (struct sockaddr_un);
 775
 776                 return (struct sockaddr *)sun;
 777 #endif
 778         } else {
 779                 mono_raise_exception(get_socket_exception(WSAEAFNOSUPPORT));
 780                 return(0);
 781         }
 782 }
 783
 784 extern void ves_icall_System_Net_Sockets_Socket_Bind_internal(SOCKET sock, MonoObject *sockaddr)
 785 {
 786         struct sockaddr *sa;
 787         int sa_size;
 788         int ret;
 789
 790         MONO_ARCH_SAVE_REGS;
 791
 792         sa=create_sockaddr_from_object(sockaddr, &sa_size);
 793
 794 #ifdef DEBUG
 795         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));
 796 #endif
 797         ret=bind(sock, sa, sa_size);
 798         g_free(sa);
 799
 800         if(ret==SOCKET_ERROR) {
 801                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 802         }
 803 }
 804
 805 extern void ves_icall_System_Net_Sockets_Socket_Connect_internal(SOCKET sock, MonoObject *sockaddr)
 806 {
 807         struct sockaddr *sa;
 808         int sa_size;
 809         int ret;
 810
 811         MONO_ARCH_SAVE_REGS;
 812
 813         sa=create_sockaddr_from_object(sockaddr, &sa_size);
 814
 815 #ifdef DEBUG
 816         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));
 817 #endif
 818
 819         ret=connect(sock, sa, sa_size);
 820         g_free(sa);
 821
 822         if(ret==SOCKET_ERROR) {
 823                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 824         }
 825 }
 826
 827 gint32 ves_icall_System_Net_Sockets_Socket_Receive_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags)
 828 {
 829         int ret;
 830         guchar *buf;
 831         gint32 alen;
 832         int recvflags=0;
 833
 834         MONO_ARCH_SAVE_REGS;
 835
 836         alen=mono_array_length(buffer);
 837         if(offset+count>alen) {
 838                 return(0);
 839         }
 840
 841         buf=mono_array_addr(buffer, guchar, offset);
 842
 843         ret=recv(sock, buf, count, recvflags);
 844         if(ret==SOCKET_ERROR) {
 845                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 846         }
 847
 848         return(ret);
 849 }
 850
 851 gint32 ves_icall_System_Net_Sockets_Socket_RecvFrom_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags, MonoObject **sockaddr)
 852 {
 853         int ret;
 854         guchar *buf;
 855         gint32 alen;
 856         int recvflags=0;
 857         struct sockaddr *sa;
 858         int sa_size;
 859
 860         MONO_ARCH_SAVE_REGS;
 861
 862         alen=mono_array_length(buffer);
 863         if(offset+count>alen) {
 864                 return(0);
 865         }
 866
 867         sa=create_sockaddr_from_object(*sockaddr, &sa_size);
 868
 869         buf=mono_array_addr(buffer, guchar, offset);
 870
 871         ret=recvfrom(sock, buf, count, recvflags, sa, &sa_size);
 872
 873         if(ret==SOCKET_ERROR) {
 874                 g_free(sa);
 875                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 876         }
 877
 878         *sockaddr=create_object_from_sockaddr(sa, sa_size);
 879         g_free(sa);
 880
 881         return(ret);
 882 }
 883
 884 gint32 ves_icall_System_Net_Sockets_Socket_Send_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags)
 885 {
 886         int ret;
 887         guchar *buf;
 888         gint32 alen;
 889         int sendflags=0;
 890
 891         MONO_ARCH_SAVE_REGS;
 892
 893         alen=mono_array_length(buffer);
 894         if(offset+count>alen) {
 895                 return(0);
 896         }
 897
 898 #ifdef DEBUG
 899         g_message(G_GNUC_PRETTY_FUNCTION ": alen: %d", alen);
 900 #endif
 901
 902         buf=mono_array_addr(buffer, guchar, offset);
 903
 904 #ifdef DEBUG
 905         g_message(G_GNUC_PRETTY_FUNCTION ": Sending %d bytes", count);
 906 #endif
 907
 908         ret=send(sock, buf, count, sendflags);
 909         if(ret==SOCKET_ERROR) {
 910                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 911         }
 912
 913         return(ret);
 914 }
 915
 916 gint32 ves_icall_System_Net_Sockets_Socket_SendTo_internal(SOCKET sock, MonoArray *buffer, gint32 offset, gint32 count, gint32 flags, MonoObject *sockaddr)
 917 {
 918         int ret;
 919         guchar *buf;
 920         gint32 alen;
 921         int sendflags=0;
 922         struct sockaddr *sa;
 923         int sa_size;
 924
 925         MONO_ARCH_SAVE_REGS;
 926
 927         alen=mono_array_length(buffer);
 928         if(offset+count>alen) {
 929                 return(0);
 930         }
 931
 932         sa=create_sockaddr_from_object(sockaddr, &sa_size);
 933
 934 #ifdef DEBUG
 935         g_message(G_GNUC_PRETTY_FUNCTION ": alen: %d", alen);
 936 #endif
 937
 938         buf=mono_array_addr(buffer, guchar, offset);
 939
 940 #ifdef DEBUG
 941         g_message(G_GNUC_PRETTY_FUNCTION ": Sending %d bytes", count);
 942 #endif
 943
 944         ret=sendto(sock, buf, count, sendflags, sa, sa_size);
 945         g_free(sa);
 946
 947         if(ret==SOCKET_ERROR) {
 948                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
 949         }
 950
 951         return(ret);
 952 }
 953
 954 static SOCKET Socket_to_SOCKET(MonoObject *sockobj)
 955 {
 956         SOCKET sock;
 957         MonoClassField *field;
 958
 959         field=mono_class_get_field_from_name(sockobj->vtable->klass, "socket");
 960         sock=*(SOCKET *)(((char *)sockobj)+field->offset);
 961
 962         return(sock);
 963 }
 964
 965 void ves_icall_System_Net_Sockets_Socket_Select_internal(MonoArray **read_socks, MonoArray **write_socks, MonoArray **err_socks, gint32 timeout)
 966 {
 967         fd_set readfds, writefds, errfds;
 968         struct timeval tv;
 969         div_t divvy;
 970         int ret;
 971         int readarrsize, writearrsize, errarrsize;
 972         MonoDomain *domain=mono_domain_get();
 973         MonoClass *sock_arr_class;
 974         MonoArray *socks;
 975         int count;
 976         int i;
 977
 978         MONO_ARCH_SAVE_REGS;
 979
 980         readarrsize=mono_array_length(*read_socks);
 981         if(readarrsize>FD_SETSIZE) {
 982                 mono_raise_exception(get_socket_exception(WSAEFAULT));
 983                 return;
 984         }
 985
 986         FD_ZERO(&readfds);
 987         for(i=0; i<readarrsize; i++) {
 988                 FD_SET(Socket_to_SOCKET(mono_array_get(*read_socks, MonoObject *, i)), &readfds);
 989         }
 990
 991         writearrsize=mono_array_length(*write_socks);
 992         if(writearrsize>FD_SETSIZE) {
 993                 mono_raise_exception(get_socket_exception(WSAEFAULT));
 994                 return;
 995         }
 996
 997         FD_ZERO(&writefds);
 998         for(i=0; i<writearrsize; i++) {
 999                 FD_SET(Socket_to_SOCKET(mono_array_get(*write_socks, MonoObject *, i)), &writefds);
1000         }
1001
1002         errarrsize=mono_array_length(*err_socks);
1003         if(errarrsize>FD_SETSIZE) {
1004                 mono_raise_exception(get_socket_exception(WSAEFAULT));
1005                 return;
1006         }
1007
1008         FD_ZERO(&errfds);
1009         for(i=0; i<errarrsize; i++) {
1010                 FD_SET(Socket_to_SOCKET(mono_array_get(*err_socks, MonoObject *, i)), &errfds);
1011         }
1012
1013         /* Negative timeout meaning block until ready is only
1014          * specified in Poll, not Select
1015          */
1016         if(timeout>=0) {
1017                 divvy=div(timeout, 1000000);
1018                 tv.tv_sec=divvy.quot;
1019                 tv.tv_usec=divvy.rem*1000000;
1020
1021                 ret=select(0, &readfds, &writefds, &errfds, &tv);
1022         } else {
1023                 ret=select(0, &readfds, &writefds, &errfds, NULL);
1024         }
1025
1026         if(ret==SOCKET_ERROR) {
1027                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1028                 return;
1029         }
1030
1031         sock_arr_class=((MonoObject *)*read_socks)->vtable->klass;
1032
1033         count=0;
1034         for(i=0; i<readarrsize; i++) {
1035                 if(FD_ISSET(Socket_to_SOCKET(mono_array_get(*read_socks, MonoObject *, i)), &readfds)) {
1036                         count++;
1037                 }
1038         }
1039         socks=mono_array_new_full(domain, sock_arr_class, &count, NULL);
1040         count=0;
1041         for(i=0; i<readarrsize; i++) {
1042                 MonoObject *sock=mono_array_get(*read_socks, MonoObject *, i);
1043
1044                 if(FD_ISSET(Socket_to_SOCKET(sock), &readfds)) {
1045                         mono_array_set(socks, MonoObject *, count, sock);
1046                         count++;
1047                 }
1048         }
1049         *read_socks=socks;
1050
1051         count=0;
1052         for(i=0; i<writearrsize; i++) {
1053                 if(FD_ISSET(Socket_to_SOCKET(mono_array_get(*write_socks, MonoObject *, i)), &writefds)) {
1054                         count++;
1055                 }
1056         }
1057         socks=mono_array_new_full(domain, sock_arr_class, &count, NULL);
1058         count=0;
1059         for(i=0; i<writearrsize; i++) {
1060                 MonoObject *sock=mono_array_get(*write_socks, MonoObject *, i);
1061
1062                 if(FD_ISSET(Socket_to_SOCKET(sock), &writefds)) {
1063                         mono_array_set(socks, MonoObject *, count, sock);
1064                         count++;
1065                 }
1066         }
1067         *write_socks=socks;
1068
1069         count=0;
1070         for(i=0; i<errarrsize; i++) {
1071                 if(FD_ISSET(Socket_to_SOCKET(mono_array_get(*err_socks, MonoObject *, i)), &errfds)) {
1072                         count++;
1073                 }
1074         }
1075         socks=mono_array_new_full(domain, sock_arr_class, &count, NULL);
1076         count=0;
1077         for(i=0; i<errarrsize; i++) {
1078                 MonoObject *sock=mono_array_get(*err_socks, MonoObject *, i);
1079
1080                 if(FD_ISSET(Socket_to_SOCKET(sock), &errfds)) {
1081                         mono_array_set(socks, MonoObject *, count, sock);
1082                         count++;
1083                 }
1084         }
1085         *err_socks=socks;
1086 }
1087
1088 void ves_icall_System_Net_Sockets_Socket_GetSocketOption_obj_internal(SOCKET sock, gint32 level, gint32 name, MonoObject **obj_val)
1089 {
1090         int system_level;
1091         int system_name;
1092         int ret;
1093         int val;
1094         int valsize=sizeof(val);
1095         struct linger linger;
1096         int lingersize=sizeof(linger);
1097         MonoDomain *domain=mono_domain_get();
1098         MonoObject *obj;
1099         MonoClass *obj_class;
1100         MonoClassField *field;
1101
1102         MONO_ARCH_SAVE_REGS;
1103
1104         ret=convert_sockopt_level_and_name(level, name, &system_level,
1105                                            &system_name);
1106         if(ret==-1) {
1107                 mono_raise_exception(get_socket_exception(WSAENOPROTOOPT));
1108                 return;
1109         }
1110
1111         /* No need to deal with MulticastOption names here, because
1112          * you cant getsockopt AddMembership or DropMembership (the
1113          * int getsockopt will error, causing an exception)
1114          */
1115         switch(name) {
1116         case SocketOptionName_Linger:
1117         case SocketOptionName_DontLinger:
1118                 ret=getsockopt(sock, system_level, system_name, &linger,
1119                                &lingersize);
1120                 break;
1121
1122         default:
1123                 ret=getsockopt(sock, system_level, system_name, &val,
1124                                &valsize);
1125         }
1126
1127         if(ret==SOCKET_ERROR) {
1128                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1129                 return;
1130         }
1131
1132         switch(name) {
1133         case SocketOptionName_Linger:
1134                 /* build a System.Net.Sockets.LingerOption */
1135                 obj_class=mono_class_from_name(system_assembly,
1136                                                "System.Net.Sockets",
1137                                                "LingerOption");
1138                 obj=mono_object_new(domain, obj_class);
1139
1140                 /* Locate and set the fields "bool enabled" and "int
1141                  * seconds"
1142                  */
1143                 field=mono_class_get_field_from_name(obj_class, "enabled");
1144                 *(guint8 *)(((char *)obj)+field->offset)=linger.l_onoff;
1145
1146                 field=mono_class_get_field_from_name(obj_class, "seconds");
1147                 *(guint32 *)(((char *)obj)+field->offset)=linger.l_linger;
1148
1149                 break;
1150
1151         case SocketOptionName_DontLinger:
1152                 /* construct a bool int in val - true if linger is off */
1153                 val=!linger.l_onoff;
1154
1155                 /* fall through */
1156
1157         default:
1158                 /* construct an Int32 object to hold val */
1159                 obj=mono_object_new(domain, mono_defaults.int32_class);
1160
1161                 /* Locate and set the "value" field */
1162                 field=mono_class_get_field_from_name(mono_defaults.int32_class,
1163                                                      "value");
1164                 *(gint32 *)(((char *)obj)+field->offset)=val;
1165         }
1166
1167         *obj_val=obj;
1168 }
1169
1170 void ves_icall_System_Net_Sockets_Socket_GetSocketOption_arr_internal(SOCKET sock, gint32 level, gint32 name, MonoArray **byte_val)
1171 {
1172         int system_level;
1173         int system_name;
1174         int ret;
1175         guchar *buf;
1176         int valsize;
1177
1178         MONO_ARCH_SAVE_REGS;
1179
1180         ret=convert_sockopt_level_and_name(level, name, &system_level,
1181                                            &system_name);
1182         if(ret==-1) {
1183                 mono_raise_exception(get_socket_exception(WSAENOPROTOOPT));
1184                 return;
1185         }
1186
1187         valsize=mono_array_length(*byte_val);
1188         buf=mono_array_addr(*byte_val, guchar, 0);
1189
1190         ret=getsockopt(sock, system_level, system_name, buf, &valsize);
1191         if(ret==SOCKET_ERROR) {
1192                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1193         }
1194 }
1195
1196 static struct in_addr ipaddress_to_struct_in_addr(MonoObject *ipaddr)
1197 {
1198         struct in_addr inaddr;
1199         guint64 addr;
1200         MonoClassField *field;
1201
1202         field=mono_class_get_field_from_name(ipaddr->vtable->klass, "address");
1203         addr=*(guint64 *)(((char *)ipaddr)+field->offset);
1204
1205         /* No idea why .net uses a 64bit type to hold a 32bit value */
1206         inaddr.s_addr=htonl((guint32)addr);
1207
1208         return(inaddr);
1209 }
1210
1211 void ves_icall_System_Net_Sockets_Socket_SetSocketOption_internal(SOCKET sock, gint32 level, gint32 name, MonoObject *obj_val, MonoArray *byte_val, gint32 int_val)
1212 {
1213         int system_level;
1214         int system_name;
1215         int ret;
1216
1217         MONO_ARCH_SAVE_REGS;
1218
1219         ret=convert_sockopt_level_and_name(level, name, &system_level,
1220                                            &system_name);
1221         if(ret==-1) {
1222                 mono_raise_exception(get_socket_exception(WSAENOPROTOOPT));
1223                 return;
1224         }
1225
1226         /* Only one of obj_val, byte_val or int_val has data */
1227         if(obj_val!=NULL) {
1228                 MonoClassField *field;
1229                 struct linger linger;
1230                 int valsize;
1231
1232                 switch(name) {
1233                 case SocketOptionName_DontLinger:
1234                         linger.l_onoff=0;
1235                         linger.l_linger=0;
1236                         valsize=sizeof(linger);
1237                         ret=setsockopt(sock, system_level, system_name,
1238                                        &linger, valsize);
1239                         break;
1240
1241                 case SocketOptionName_Linger:
1242                         /* Dig out "bool enabled" and "int seconds"
1243                          * fields
1244                          */
1245                         field=mono_class_get_field_from_name(obj_val->vtable->klass, "enabled");
1246                         linger.l_onoff=*(guint8 *)(((char *)obj_val)+field->offset);
1247                         field=mono_class_get_field_from_name(obj_val->vtable->klass, "seconds");
1248                         linger.l_linger=*(guint32 *)(((char *)obj_val)+field->offset);
1249
1250                         valsize=sizeof(linger);
1251                         ret=setsockopt(sock, system_level, system_name,
1252                                        &linger, valsize);
1253                         break;
1254                 case SocketOptionName_AddMembership:
1255                 case SocketOptionName_DropMembership:
1256                 {
1257 #ifdef HAVE_STRUCT_IP_MREQN
1258                         struct ip_mreqn mreq;
1259 #else
1260                         struct ip_mreq mreq;
1261 #endif /* HAVE_STRUCT_IP_MREQN */
1262
1263                         /* pain! MulticastOption holds two IPAddress
1264                          * members, so I have to dig the value out of
1265                          * those :-(
1266                          */
1267                         field = mono_class_get_field_from_name (obj_val->vtable->klass, "group");
1268                         mreq.imr_multiaddr = ipaddress_to_struct_in_addr (*(gpointer *)(((char *)obj_val) +
1269                                                                                         field->offset));
1270                         field = mono_class_get_field_from_name (obj_val->vtable->klass, "local");
1271 #ifdef HAVE_STRUCT_IP_MREQN
1272                         mreq.imr_address = ipaddress_to_struct_in_addr (*(gpointer *)(((char *)obj_val) +
1273                                                                                       field->offset));
1274 #else
1275                         mreq.imr_interface = ipaddress_to_struct_in_addr (*(gpointer *)(((char *)obj_val) +
1276                                                                                         field->offset));
1277 #endif /* HAVE_STRUCT_IP_MREQN */
1278
1279                         ret = setsockopt (sock, system_level, system_name,
1280                                           &mreq, sizeof (mreq));
1281                         break;
1282                 }
1283                 default:
1284                         /* Throw an exception */
1285                         mono_raise_exception(get_socket_exception(WSAEINVAL));
1286                 }
1287         } else if (byte_val!=NULL) {
1288                 int valsize=mono_array_length(byte_val);
1289                 guchar *buf=mono_array_addr(byte_val, guchar, 0);
1290
1291                 ret=setsockopt(sock, system_level, system_name, buf, valsize);
1292                 if(ret==SOCKET_ERROR) {
1293                         mono_raise_exception(get_socket_exception(WSAGetLastError()));
1294                 }
1295         } else {
1296                 ret=setsockopt(sock, system_level, system_name, &int_val,
1297                                sizeof(int_val));
1298         }
1299
1300         if(ret==SOCKET_ERROR) {
1301                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1302         }
1303 }
1304
1305 void ves_icall_System_Net_Sockets_Socket_Shutdown_internal(SOCKET sock,
1306                                                            gint32 how)
1307 {
1308         int ret;
1309
1310         MONO_ARCH_SAVE_REGS;
1311
1312         /* Currently, the values for how (recv=0, send=1, both=2) match
1313          * the BSD API
1314          */
1315         ret=shutdown(sock, how);
1316         if(ret==SOCKET_ERROR) {
1317                 mono_raise_exception(get_socket_exception(WSAGetLastError()));
1318         }
1319 }
1320
1321 static gboolean hostent_to_IPHostEntry(struct hostent *he, MonoString **h_name,
1322                                        MonoArray **h_aliases,
1323                                        MonoArray **h_addr_list)
1324 {
1325         MonoDomain *domain = mono_domain_get ();
1326         int i;
1327
1328         if(he->h_length!=4 || he->h_addrtype!=AF_INET) {
1329                 return(FALSE);
1330         }
1331
1332         *h_name=mono_string_new(domain, he->h_name);
1333
1334         i=0;
1335         while(he->h_aliases[i]!=NULL) {
1336                 i++;
1337         }
1338
1339         *h_aliases=mono_array_new(domain, mono_defaults.string_class, i);
1340         i=0;
1341         while(he->h_aliases[i]!=NULL) {
1342                 MonoString *alias;
1343
1344                 alias=mono_string_new(domain, he->h_aliases[i]);
1345                 mono_array_set(*h_aliases, MonoString *, i, alias);
1346                 i++;
1347         }
1348
1349         i=0;
1350         while(he->h_addr_list[i]!=NULL) {
1351                 i++;
1352         }
1353
1354         *h_addr_list=mono_array_new(domain, mono_defaults.string_class, i);
1355         i=0;
1356         while(he->h_addr_list[i]!=NULL) {
1357                 MonoString *addr_string;
1358                 char addr[16];
1359
1360                 g_snprintf(addr, 16, "%u.%u.%u.%u",
1361                          (unsigned char)he->h_addr_list[i][0],
1362                          (unsigned char)he->h_addr_list[i][1],
1363                          (unsigned char)he->h_addr_list[i][2],
1364                          (unsigned char)he->h_addr_list[i][3]);
1365
1366                 addr_string=mono_string_new(domain, addr);
1367                 mono_array_set(*h_addr_list, MonoString *, i, addr_string);
1368                 i++;
1369         }
1370
1371         return(TRUE);
1372 }
1373
1374 extern MonoBoolean ves_icall_System_Net_Dns_GetHostByName_internal(MonoString *host, MonoString **h_name, MonoArray **h_aliases, MonoArray **h_addr_list)
1375 {
1376         char *hostname;
1377         struct hostent *he;
1378
1379         MONO_ARCH_SAVE_REGS;
1380
1381         hostname=mono_string_to_utf8(host);
1382         he=gethostbyname(hostname);
1383         g_free(hostname);
1384
1385         if(he==NULL) {
1386                 return(FALSE);
1387         }
1388
1389         return(hostent_to_IPHostEntry(he, h_name, h_aliases, h_addr_list));
1390 }
1391
1392 #ifndef HAVE_INET_PTON
1393 static int
1394 inet_pton (int family, const char *address, void *inaddrp)
1395 {
1396         if (family == AF_INET) {
1397 #ifdef HAVE_INET_ATON
1398                 struct in_addr inaddr;
1399
1400                 if (!inet_aton (address, &inaddr))
1401                         return 0;
1402
1403                 memcpy (inaddrp, &inaddr, sizeof (struct in_addr));
1404                 return 1;
1405 #else
1406                 /* assume the system has inet_addr(), if it doesn't
1407                    have that we're pretty much screwed... */
1408                 guint32 inaddr;
1409
1410                 if (!strcmp (address, "255.255.255.255")) {
1411                         /* special-case hack */
1412                         inaddr = 0xffffffff;
1413                 } else {
1414                         inaddr = inet_addr (address);
1415 #ifndef INADDR_NONE
1416 #define INADDR_NONE ((in_addr_t) -1)
1417 #endif
1418                         if (inaddr == INADDR_NONE)
1419                                 return 0;
1420                 }
1421
1422                 memcpy (inaddrp, &inaddr, sizeof (guint32));
1423                 return 1;
1424 #endif /* HAVE_INET_ATON */
1425         }
1426
1427         return -1;
1428 }
1429 #endif /* !HAVE_INET_PTON */
1430
1431 extern MonoBoolean ves_icall_System_Net_Dns_GetHostByAddr_internal(MonoString *addr, MonoString **h_name, MonoArray **h_aliases, MonoArray **h_addr_list)
1432 {
1433         struct in_addr inaddr;
1434         struct hostent *he;
1435         char *address;
1436
1437         MONO_ARCH_SAVE_REGS;
1438
1439         address = mono_string_to_utf8 (addr);
1440         if (inet_pton (AF_INET, address, &inaddr) <= 0) {
1441                 g_free (address);
1442                 return FALSE;
1443         }
1444
1445         g_free (address);
1446         if ((he = gethostbyaddr ((char *) &inaddr, sizeof (inaddr), AF_INET)) == NULL)
1447                 return FALSE;
1448
1449         return(hostent_to_IPHostEntry(he, h_name, h_aliases, h_addr_list));
1450 }
1451
1452 extern MonoBoolean ves_icall_System_Net_Dns_GetHostName_internal(MonoString **h_name)
1453 {
1454         guchar hostname[256];
1455         int ret;
1456
1457         MONO_ARCH_SAVE_REGS;
1458
1459         ret=gethostname (hostname, sizeof(hostname));
1460         if(ret==-1) {
1461                 return(FALSE);
1462         }
1463
1464         *h_name=mono_string_new(mono_domain_get (), hostname);
1465
1466         return(TRUE);
1467 }
1468
1469
1470 void mono_network_init(void)
1471 {
1472         WSADATA wsadata;
1473         int err;
1474
1475         err=WSAStartup(MAKEWORD(2,0), &wsadata);
1476         if(err!=0) {
1477                 g_error(G_GNUC_PRETTY_FUNCTION ": Couldn't initialise networking");
1478                 exit(-1);
1479         }
1480
1481 #ifdef DEBUG
1482         g_message(G_GNUC_PRETTY_FUNCTION ": Using socket library: %s", wsadata.szDescription);
1483         g_message(G_GNUC_PRETTY_FUNCTION ": Socket system status: %s", wsadata.szSystemStatus);
1484 #endif
1485 }
1486
1487 void mono_network_cleanup(void)
1488 {
1489         WSACleanup();
1490 }