reactos/dll/win32/libtirpc/src/rpc_generic.c

   1 /*
   2  * Copyright (c) 2009, Sun Microsystems, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  * - Redistributions of source code must retain the above copyright notice,
   8  *   this list of conditions and the following disclaimer.
   9  * - Redistributions in binary form must reproduce the above copyright notice,
  10  *   this list of conditions and the following disclaimer in the documentation
  11  *   and/or other materials provided with the distribution.
  12  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  13  *   contributors may be used to endorse or promote products derived
  14  *   from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 /*
  29  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  30  */
  31
  32 //#include <sys/cdefs.h>
  33
  34 /*
  35  * rpc_generic.c, Miscl routines for RPC.
  36  *
  37  */
  38 #include <wintirpc.h>
  39 //#include <pthread.h>
  40 #include <reentrant.h>
  41 #include <sys/types.h>
  42 //#include <sys/param.h>
  43 //#include <sys/socket.h>
  44 //#include <sys/time.h>
  45 //#include <sys/un.h>
  46 //#include <sys/resource.h>
  47 //#include <netinet/in.h>
  48 //#include <arpa/inet.h>
  49 #include <rpc/rpc.h>
  50 //#include <ctype.h>
  51 //#include <stddef.h>
  52 #include <stdio.h>
  53 //#include <netdb.h>
  54 #include <netconfig.h>
  55 #include <stdlib.h>
  56 #include <string.h>
  57 //#include <syslog.h>
  58 #include <rpc/nettype.h>
  59 #include "rpc_com.h"
  60
  61 struct handle {
  62         NCONF_HANDLE *nhandle;
  63         int nflag;              /* Whether NETPATH or NETCONFIG */
  64         int nettype;
  65 };
  66
  67 static const struct _rpcnettype {
  68         const char *name;
  69         const int type;
  70 } _rpctypelist[] = {
  71         { "netpath", _RPC_NETPATH },
  72         { "visible", _RPC_VISIBLE },
  73         { "circuit_v", _RPC_CIRCUIT_V },
  74         { "datagram_v", _RPC_DATAGRAM_V },
  75         { "circuit_n", _RPC_CIRCUIT_N },
  76         { "datagram_n", _RPC_DATAGRAM_N },
  77         { "tcp", _RPC_TCP },
  78         { "udp", _RPC_UDP },
  79         { 0, _RPC_NONE }
  80 };
  81
  82 struct netid_af {
  83         const char      *netid;
  84         ADDRESS_FAMILY          af;
  85         int             protocol;
  86 };
  87
  88 static const struct netid_af na_cvt[] = {
  89         { "udp",  AF_INET,  IPPROTO_UDP },
  90         { "tcp",  AF_INET,  IPPROTO_TCP },
  91 #ifdef INET6
  92         { "udp6", AF_INET6, IPPROTO_UDP },
  93         { "tcp6", AF_INET6, IPPROTO_TCP },
  94 #endif
  95 #ifdef AF_LOCAL
  96         { "local", AF_LOCAL, 0 }
  97 #endif
  98 };
  99
 100 #if 0
 101 static char *strlocase(char *);
 102 #endif
 103 static int getnettype(const char *);
 104
 105 /*
 106  * Cache the result of getrlimit(), so we don't have to do an
 107  * expensive call every time.
 108  */
 109 int
 110 __rpc_dtbsize()
 111 {
 112 #ifdef _WIN32
 113         return (WINSOCK_HANDLE_HASH_SIZE);
 114 #else
 115
 116         static int tbsize;
 117         struct rlimit rl;
 118
 119         if (tbsize) {
 120                 return (tbsize);
 121         }
 122         if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
 123                 return (tbsize = (int)rl.rlim_max);
 124         }
 125         /*
 126          * Something wrong.  I'll try to save face by returning a
 127          * pessimistic number.
 128          */
 129         return (32);
 130 #endif
 131 }
 132
 133
 134 /*
 135  * Find the appropriate buffer size
 136  */
 137 u_int
 138 /*ARGSUSED*/
 139 __rpc_get_t_size(af, proto, size)
 140         int af, proto;
 141         int size;       /* Size requested */
 142 {
 143         int maxsize, defsize;
 144
 145         maxsize = 256 * 1024;   /* XXX */
 146         switch (proto) {
 147         case IPPROTO_TCP:
 148                 defsize = 1024 * 1024;  /* XXX */
 149                 break;
 150         case IPPROTO_UDP:
 151                 defsize = UDPMSGSIZE;
 152                 break;
 153         default:
 154                 defsize = RPC_MAXDATASIZE;
 155                 break;
 156         }
 157         if (size == 0)
 158                 return defsize;
 159 #if 1
 160     /* cbodley- give us the size we ask for, or we'll get fragmented! */
 161     return (u_int)size;
 162 #else
 163         /* Check whether the value is within the upper max limit */
 164         return (size > maxsize ? (u_int)maxsize : (u_int)size);
 165 #endif
 166 }
 167
 168 /*
 169  * Find the appropriate address buffer size
 170  */
 171 u_int
 172 __rpc_get_a_size(af)
 173         int af;
 174 {
 175         switch (af) {
 176         case AF_INET:
 177                 return sizeof (struct sockaddr_in);
 178 #ifdef INET6
 179         case AF_INET6:
 180                 return sizeof (struct sockaddr_in6);
 181 #endif
 182 #ifdef AF_LOCAL
 183         case AF_LOCAL:
 184                 return sizeof (struct sockaddr_un);
 185 #endif
 186         default:
 187                 break;
 188         }
 189         return ((u_int)RPC_MAXADDRSIZE);
 190 }
 191
 192 #if 0
 193 static char *
 194 strlocase(p)
 195         char *p;
 196 {
 197         char *t = p;
 198
 199         for (; *p; p++)
 200                 if (isupper(*p))
 201                         *p = tolower(*p);
 202         return (t);
 203 }
 204 #endif
 205
 206 /*
 207  * Returns the type of the network as defined in <rpc/nettype.h>
 208  * If nettype is NULL, it defaults to NETPATH.
 209  */
 210 static int
 211 getnettype(nettype)
 212         const char *nettype;
 213 {
 214         int i;
 215
 216         if ((nettype == NULL) || (nettype[0] == 0)) {
 217                 return (_RPC_NETPATH);  /* Default */
 218         }
 219
 220 #if 0
 221         nettype = strlocase(nettype);
 222 #endif
 223         for (i = 0; _rpctypelist[i].name; i++)
 224                 if (strcasecmp(nettype, _rpctypelist[i].name) == 0) {
 225                         return (_rpctypelist[i].type);
 226                 }
 227         return (_rpctypelist[i].type);
 228 }
 229
 230 /*
 231  * For the given nettype (tcp or udp only), return the first structure found.
 232  * This should be freed by calling freenetconfigent()
 233  */
 234 struct netconfig *
 235 __rpc_getconfip(nettype)
 236         const char *nettype;
 237 {
 238         char *netid;
 239         char *netid_tcp = (char *) NULL;
 240         char *netid_udp = (char *) NULL;
 241         struct netconfig *dummy;
 242         extern thread_key_t tcp_key, udp_key;
 243         extern mutex_t tsd_lock;
 244
 245         if (tcp_key == -1) {
 246                 mutex_lock(&tsd_lock);
 247                 if (tcp_key == -1)
 248                         tcp_key = TlsAlloc();   //thr_keycreate(&tcp_key, free);
 249                 mutex_unlock(&tsd_lock);
 250         }
 251         netid_tcp = (char *)thr_getspecific(tcp_key);
 252         if (udp_key == -1) {
 253                 mutex_lock(&tsd_lock);
 254                 if (udp_key == -1)
 255                         udp_key = TlsAlloc();   //thr_keycreate(&udp_key, free);
 256                 mutex_unlock(&tsd_lock);
 257         }
 258         netid_udp = (char *)thr_getspecific(udp_key);
 259         if (!netid_udp && !netid_tcp) {
 260                 struct netconfig *nconf;
 261                 void *confighandle;
 262
 263                 if (!(confighandle = setnetconfig())) {
 264                         //syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
 265                         return (NULL);
 266                 }
 267                 while ((nconf = getnetconfig(confighandle)) != NULL) {
 268                         if (strcmp(nconf->nc_protofmly, NC_INET) == 0 ||
 269                             strcmp(nconf->nc_protofmly, NC_INET6) == 0) {
 270                                 if (strcmp(nconf->nc_proto, NC_TCP) == 0 &&
 271                                                 netid_tcp == NULL) {
 272                                         netid_tcp = strdup(nconf->nc_netid);
 273                                         thr_setspecific(tcp_key,
 274                                                         (void *) netid_tcp);
 275                                 } else
 276                                 if (strcmp(nconf->nc_proto, NC_UDP) == 0 &&
 277                                                 netid_udp == NULL) {
 278                                         netid_udp = strdup(nconf->nc_netid);
 279                                         thr_setspecific(udp_key,
 280                                                 (void *) netid_udp);
 281                                 }
 282                         }
 283                 }
 284                 endnetconfig(confighandle);
 285         }
 286         if (strcmp(nettype, "udp") == 0)
 287                 netid = netid_udp;
 288         else if (strcmp(nettype, "tcp") == 0)
 289                 netid = netid_tcp;
 290         else {
 291                 return (NULL);
 292         }
 293         if ((netid == NULL) || (netid[0] == 0)) {
 294                 return (NULL);
 295         }
 296         dummy = getnetconfigent(netid);
 297         return (dummy);
 298 }
 299
 300 /*
 301  * Returns the type of the nettype, which should then be used with
 302  * __rpc_getconf().
 303  */
 304 void *
 305 __rpc_setconf(nettype)
 306         const char *nettype;
 307 {
 308         struct handle *handle;
 309
 310         handle = (struct handle *) malloc(sizeof (struct handle));
 311         if (handle == NULL) {
 312                 return (NULL);
 313         }
 314         switch (handle->nettype = getnettype(nettype)) {
 315         case _RPC_NETPATH:
 316         case _RPC_CIRCUIT_N:
 317         case _RPC_DATAGRAM_N:
 318                 if (!(handle->nhandle = setnetpath())) {
 319                         free(handle);
 320                         return (NULL);
 321                 }
 322                 handle->nflag = TRUE;
 323                 break;
 324         case _RPC_VISIBLE:
 325         case _RPC_CIRCUIT_V:
 326         case _RPC_DATAGRAM_V:
 327         case _RPC_TCP:
 328         case _RPC_UDP:
 329                 if (!(handle->nhandle = setnetconfig())) {
 330                         //syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
 331                         free(handle);
 332                         return (NULL);
 333                 }
 334                 handle->nflag = FALSE;
 335                 break;
 336         default:
 337                 return (NULL);
 338         }
 339
 340         return (handle);
 341 }
 342
 343 /*
 344  * Returns the next netconfig struct for the given "net" type.
 345  * __rpc_setconf() should have been called previously.
 346  */
 347 struct netconfig *
 348 __rpc_getconf(vhandle)
 349         void *vhandle;
 350 {
 351         struct handle *handle;
 352         struct netconfig *nconf;
 353
 354         handle = (struct handle *)vhandle;
 355         if (handle == NULL) {
 356                 return (NULL);
 357         }
 358         for (;;) {
 359                 if (handle->nflag)
 360                         nconf = getnetpath(handle->nhandle);
 361                 else
 362                         nconf = getnetconfig(handle->nhandle);
 363                 if (nconf == NULL)
 364                         break;
 365                 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
 366                         (nconf->nc_semantics != NC_TPI_COTS) &&
 367                         (nconf->nc_semantics != NC_TPI_COTS_ORD))
 368                         continue;
 369                 switch (handle->nettype) {
 370                 case _RPC_VISIBLE:
 371                         if (!(nconf->nc_flag & NC_VISIBLE))
 372                                 continue;
 373                         /* FALLTHROUGH */
 374                 case _RPC_NETPATH:      /* Be happy */
 375                         break;
 376                 case _RPC_CIRCUIT_V:
 377                         if (!(nconf->nc_flag & NC_VISIBLE))
 378                                 continue;
 379                         /* FALLTHROUGH */
 380                 case _RPC_CIRCUIT_N:
 381                         if ((nconf->nc_semantics != NC_TPI_COTS) &&
 382                                 (nconf->nc_semantics != NC_TPI_COTS_ORD))
 383                                 continue;
 384                         break;
 385                 case _RPC_DATAGRAM_V:
 386                         if (!(nconf->nc_flag & NC_VISIBLE))
 387                                 continue;
 388                         /* FALLTHROUGH */
 389                 case _RPC_DATAGRAM_N:
 390                         if (nconf->nc_semantics != NC_TPI_CLTS)
 391                                 continue;
 392                         break;
 393                 case _RPC_TCP:
 394                         if (((nconf->nc_semantics != NC_TPI_COTS) &&
 395                                 (nconf->nc_semantics != NC_TPI_COTS_ORD)) ||
 396                                 (strcmp(nconf->nc_protofmly, NC_INET)
 397 #ifdef INET6
 398                                  && strcmp(nconf->nc_protofmly, NC_INET6))
 399 #else
 400                                 )
 401 #endif
 402                                 ||
 403                                 strcmp(nconf->nc_proto, NC_TCP))
 404                                 continue;
 405                         break;
 406                 case _RPC_UDP:
 407                         if ((nconf->nc_semantics != NC_TPI_CLTS) ||
 408                                 (strcmp(nconf->nc_protofmly, NC_INET)
 409 #ifdef INET6
 410                                 && strcmp(nconf->nc_protofmly, NC_INET6))
 411 #else
 412                                 )
 413 #endif
 414                                 ||
 415                                 strcmp(nconf->nc_proto, NC_UDP))
 416                                 continue;
 417                         break;
 418                 }
 419                 break;
 420         }
 421         return (nconf);
 422 }
 423
 424 void
 425 __rpc_endconf(vhandle)
 426         void * vhandle;
 427 {
 428         struct handle *handle;
 429
 430         handle = (struct handle *) vhandle;
 431         if (handle == NULL) {
 432                 return;
 433         }
 434         if (handle->nflag) {
 435                 endnetpath(handle->nhandle);
 436         } else {
 437                 endnetconfig(handle->nhandle);
 438         }
 439         free(handle);
 440 }
 441
 442 /*
 443  * Used to ping the NULL procedure for clnt handle.
 444  * Returns NULL if fails, else a non-NULL pointer.
 445  */
 446 void *
 447 rpc_nullproc(clnt)
 448         CLIENT *clnt;
 449 {
 450         struct timeval TIMEOUT = {25, 0};
 451
 452         if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL,
 453                 (xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
 454                 return (NULL);
 455         }
 456         return ((void *) clnt);
 457 }
 458
 459 /*
 460  * Try all possible transports until
 461  * one succeeds in finding the netconf for the given fd.
 462  */
 463 struct netconfig *
 464 __rpcgettp(fd)
 465         SOCKET fd;
 466 {
 467         const char *netid;
 468         struct __rpc_sockinfo si;
 469
 470         if (!__rpc_fd2sockinfo(fd, &si))
 471                 return NULL;
 472
 473         if (!__rpc_sockinfo2netid(&si, &netid))
 474                 return NULL;
 475
 476         /*LINTED const castaway*/
 477         return getnetconfigent((char *)netid);
 478 }
 479
 480 int
 481 __rpc_fd2sockinfo(SOCKET fd, struct __rpc_sockinfo *sip)
 482 {
 483         socklen_t len;
 484         int type, proto;
 485         struct sockaddr_storage ss;
 486
 487 #ifdef _WIN32
 488         WSAPROTOCOL_INFO proto_info;
 489         int proto_info_size = sizeof(proto_info);
 490         if (getsockopt(fd, SOL_SOCKET, SO_PROTOCOL_INFO, (char *)&proto_info, &proto_info_size) == SOCKET_ERROR) {
 491 #ifndef __REACTOS__
 492                 int err = WSAGetLastError();
 493 #endif
 494                 return 0;
 495         }
 496         len = proto_info.iMaxSockAddr;
 497         ss.ss_family = (ADDRESS_FAMILY)proto_info.iAddressFamily;
 498 #else
 499         len = sizeof ss;
 500         if (getsockname(fd, (struct sockaddr *)&ss, &len) == SOCKET_ERROR) {
 501                 return 0;
 502         }
 503 #endif
 504         sip->si_alen = len;
 505
 506         len = sizeof type;
 507         if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&type, &len) == SOCKET_ERROR) {
 508 #ifndef __REACTOS__
 509                 int err = WSAGetLastError();
 510 #endif
 511                 return 0;
 512         }
 513
 514         /* XXX */
 515 #ifdef AF_LOCAL
 516         if (ss.ss_family != AF_LOCAL) {
 517 #endif
 518                 if (type == SOCK_STREAM)
 519                         proto = IPPROTO_TCP;
 520                 else if (type == SOCK_DGRAM)
 521                         proto = IPPROTO_UDP;
 522                 else
 523                         return 0;
 524 #ifdef AF_LOCAL
 525         } else
 526                 proto = 0;
 527 #endif
 528
 529         sip->si_af = ss.ss_family;
 530         sip->si_proto = proto;
 531         sip->si_socktype = type;
 532
 533         return 1;
 534 }
 535
 536 /*
 537  * Linear search, but the number of entries is small.
 538  */
 539 int
 540 __rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip)
 541 {
 542         int i;
 543
 544         for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++)
 545                 if (strcmp(na_cvt[i].netid, nconf->nc_netid) == 0 || (
 546                     strcmp(nconf->nc_netid, "unix") == 0 &&
 547                     strcmp(na_cvt[i].netid, "local") == 0)) {
 548                         sip->si_af = na_cvt[i].af;
 549                         sip->si_proto = na_cvt[i].protocol;
 550                         sip->si_socktype =
 551                             __rpc_seman2socktype((int)nconf->nc_semantics);
 552                         if (sip->si_socktype == -1)
 553                                 return 0;
 554                         sip->si_alen = __rpc_get_a_size(sip->si_af);
 555                         return 1;
 556                 }
 557
 558         return 0;
 559 }
 560
 561 SOCKET
 562 __rpc_nconf2fd(const struct netconfig *nconf)
 563 {
 564         struct __rpc_sockinfo si;
 565         SOCKET fd;
 566
 567         if (!__rpc_nconf2sockinfo(nconf, &si))
 568                 return 0;
 569
 570         if ((fd = socket(si.si_af, si.si_socktype, si.si_proto)) != INVALID_SOCKET &&
 571             si.si_af == AF_INET6) {
 572                 int val = 1;
 573
 574                 setsockopt(fd, SOL_IPV6, IPV6_V6ONLY, (const char *)&val, sizeof(val));
 575         }
 576         return fd;
 577 }
 578
 579 int
 580 __rpc_sockinfo2netid(struct __rpc_sockinfo *sip, const char **netid)
 581 {
 582         int i;
 583         struct netconfig *nconf;
 584
 585         nconf = getnetconfigent("local");
 586
 587         for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++) {
 588                 if (na_cvt[i].af == sip->si_af &&
 589                     na_cvt[i].protocol == sip->si_proto) {
 590                         if (strcmp(na_cvt[i].netid, "local") == 0 && nconf == NULL) {
 591                                 if (netid)
 592                                         *netid = "unix";
 593                         } else {
 594                                 if (netid)
 595                                         *netid = na_cvt[i].netid;
 596                         }
 597                         if (nconf != NULL)
 598                                 freenetconfigent(nconf);
 599                         return 1;
 600                 }
 601         }
 602         if (nconf != NULL)
 603                 freenetconfigent(nconf);
 604
 605         return 0;
 606 }
 607
 608 char *
 609 taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf)
 610 {
 611         struct __rpc_sockinfo si;
 612
 613         if (!__rpc_nconf2sockinfo(nconf, &si))
 614                 return NULL;
 615         return __rpc_taddr2uaddr_af(si.si_af, nbuf);
 616 }
 617
 618 struct netbuf *
 619 uaddr2taddr(const struct netconfig *nconf, const char *uaddr)
 620 {
 621         struct __rpc_sockinfo si;
 622
 623         if (!__rpc_nconf2sockinfo(nconf, &si))
 624                 return NULL;
 625         return __rpc_uaddr2taddr_af(si.si_af, uaddr);
 626 }
 627
 628 void freeuaddr(char *uaddr)
 629 {
 630         free(uaddr);
 631 }
 632
 633 void freenetbuf(struct netbuf *nbuf)
 634 {
 635         if (nbuf) {
 636                 free(nbuf->buf);
 637                 free(nbuf);
 638         }
 639 }
 640
 641 #ifdef __REACTOS__
 642 PCSTR
 643 WSAAPI
 644 inet_ntop(INT af, PVOID src, PSTR dst, size_t cnt)
 645 {
 646         struct in_addr in;
 647         char *text_addr;
 648
 649         if (af == AF_INET) {
 650                 memcpy(&in.s_addr, src, sizeof(in.s_addr));
 651                 text_addr = inet_ntoa(in);
 652                 if (text_addr && dst) {
 653                         strncpy(dst, text_addr, cnt);
 654                         return dst;
 655                 }
 656         }
 657
 658         return 0;
 659 }
 660 #endif
 661
 662 char *
 663 __rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
 664 {
 665         char *ret;
 666         struct sockaddr_in *sin;
 667 #ifdef AF_LOCAL
 668         struct sockaddr_un *sun;
 669 #endif
 670         char namebuf[INET_ADDRSTRLEN];
 671 #ifdef INET6
 672         struct sockaddr_in6 *sin6;
 673         char namebuf6[INET6_ADDRSTRLEN];
 674 #endif
 675         u_int16_t port;
 676
 677         if (nbuf->len <= 0)
 678                 return NULL;
 679
 680         switch (af) {
 681         case AF_INET:
 682                 sin = nbuf->buf;
 683                 if (inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf)
 684                     == NULL)
 685                         return NULL;
 686                 port = ntohs(sin->sin_port);
 687                 if (asprintf(&ret, "%s.%u.%u", namebuf, ((u_int32_t)port) >> 8,
 688                     port & 0xff) < 0)
 689                         return NULL;
 690                 break;
 691 #ifdef INET6
 692         case AF_INET6:
 693                 sin6 = nbuf->buf;
 694                 if (inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6)
 695                     == NULL)
 696                         return NULL;
 697                 port = ntohs(sin6->sin6_port);
 698                 if (asprintf(&ret, "%s.%u.%u", namebuf6, ((u_int32_t)port) >> 8,
 699                     port & 0xff) < 0)
 700                         return NULL;
 701                 break;
 702 #endif
 703 #ifdef AF_LOCAL
 704         case AF_LOCAL:
 705                 sun = nbuf->buf;
 706                 /*      if (asprintf(&ret, "%.*s", (int)(sun->sun_len -
 707                     offsetof(struct sockaddr_un, sun_path)),
 708                     sun->sun_path) < 0)*/
 709                 if (asprintf(&ret, "%.*s", (int)(sizeof(*sun) -
 710                                                  offsetof(struct sockaddr_un, sun_path)),
 711                              sun->sun_path) < 0)
 712
 713                         return (NULL);
 714                 break;
 715 #endif
 716         default:
 717                 return NULL;
 718         }
 719
 720         return ret;
 721 }
 722
 723 struct netbuf *
 724 __rpc_uaddr2taddr_af(int af, const char *uaddr)
 725 {
 726         struct netbuf *ret = NULL;
 727         char *addrstr, *p;
 728         unsigned short port, portlo, porthi;
 729         struct sockaddr_in *sin;
 730 #ifdef INET6
 731         struct sockaddr_in6 *sin6;
 732 #endif
 733 #ifdef AF_LOCAL
 734         struct sockaddr_un *sun;
 735 #endif
 736
 737         port = 0;
 738         sin = NULL;
 739         addrstr = strdup(uaddr);
 740         if (addrstr == NULL)
 741                 return NULL;
 742
 743         /*
 744          * AF_LOCAL addresses are expected to be absolute
 745          * pathnames, anything else will be AF_INET or AF_INET6.
 746          */
 747         if (*addrstr != '/') {
 748                 p = strrchr(addrstr, '.');
 749                 if (p == NULL)
 750                         goto out;
 751                 portlo = (unsigned)atoi(p + 1);
 752                 *p = '\0';
 753
 754                 p = strrchr(addrstr, '.');
 755                 if (p == NULL)
 756                         goto out;
 757                 porthi = (unsigned)atoi(p + 1);
 758                 *p = '\0';
 759                 port = (porthi << 8) | portlo;
 760         }
 761
 762         ret = (struct netbuf *)malloc(sizeof *ret);
 763         if (ret == NULL)
 764                 goto out;
 765
 766         switch (af) {
 767         case AF_INET:
 768                 sin = (struct sockaddr_in *)malloc(sizeof *sin);
 769                 if (sin == NULL)
 770                         goto out;
 771                 memset(sin, 0, sizeof *sin);
 772                 sin->sin_family = AF_INET;
 773                 sin->sin_port = htons(port);
 774 #ifndef __REACTOS__
 775                 if (inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) {
 776 #else
 777                 sin->sin_addr.S_un.S_addr = inet_addr(addrstr);
 778                 if (sin->sin_addr.S_un.S_addr == INADDR_NONE) {
 779 #endif
 780                         free(sin);
 781                         free(ret);
 782                         ret = NULL;
 783                         goto out;
 784                 }
 785                 ret->maxlen = ret->len = sizeof *sin;
 786                 ret->buf = sin;
 787                 break;
 788 #ifdef INET6
 789         case AF_INET6:
 790                 sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6);
 791                 if (sin6 == NULL)
 792                         goto out;
 793                 memset(sin6, 0, sizeof *sin6);
 794                 sin6->sin6_family = AF_INET6;
 795                 sin6->sin6_port = htons(port);
 796                 if (inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) {
 797                         free(sin6);
 798                         free(ret);
 799                         ret = NULL;
 800                         goto out;
 801                 }
 802                 ret->maxlen = ret->len = sizeof *sin6;
 803                 ret->buf = sin6;
 804                 break;
 805 #endif
 806 #ifdef AF_LOCAL
 807         case AF_LOCAL:
 808                 sun = (struct sockaddr_un *)malloc(sizeof *sun);
 809                 if (sun == NULL)
 810                         goto out;
 811                 memset(sun, 0, sizeof *sun);
 812                 sun->sun_family = AF_LOCAL;
 813                 strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1);
 814                 ret->len = SUN_LEN(sun);
 815                 ret->maxlen = sizeof(struct sockaddr_un);
 816                 ret->buf = sun;
 817                 break;
 818 #endif
 819         default:
 820                 break;
 821         }
 822 out:
 823         free(addrstr);
 824         return ret;
 825 }
 826
 827 int
 828 __rpc_seman2socktype(int semantics)
 829 {
 830         switch (semantics) {
 831         case NC_TPI_CLTS:
 832                 return SOCK_DGRAM;
 833         case NC_TPI_COTS_ORD:
 834                 return SOCK_STREAM;
 835         case NC_TPI_RAW:
 836                 return SOCK_RAW;
 837         default:
 838                 break;
 839         }
 840
 841         return -1;
 842 }
 843
 844 int
 845 __rpc_socktype2seman(int socktype)
 846 {
 847         switch (socktype) {
 848         case SOCK_DGRAM:
 849                 return NC_TPI_CLTS;
 850         case SOCK_STREAM:
 851                 return NC_TPI_COTS_ORD;
 852         case SOCK_RAW:
 853                 return NC_TPI_RAW;
 854         default:
 855                 break;
 856         }
 857
 858         return -1;
 859 }
 860
 861 /*
 862  * XXXX - IPv6 scope IDs can't be handled in universal addresses.
 863  * Here, we compare the original server address to that of the RPC
 864  * service we just received back from a call to rpcbind on the remote
 865  * machine. If they are both "link local" or "site local", copy
 866  * the scope id of the server address over to the service address.
 867  */
 868 int
 869 __rpc_fixup_addr(struct netbuf *new, const struct netbuf *svc)
 870 {
 871 #ifdef INET6
 872         struct sockaddr *sa_new, *sa_svc;
 873         struct sockaddr_in6 *sin6_new, *sin6_svc;
 874
 875         sa_svc = (struct sockaddr *)svc->buf;
 876         sa_new = (struct sockaddr *)new->buf;
 877
 878         if (sa_new->sa_family == sa_svc->sa_family &&
 879             sa_new->sa_family == AF_INET6) {
 880                 sin6_new = (struct sockaddr_in6 *)new->buf;
 881                 sin6_svc = (struct sockaddr_in6 *)svc->buf;
 882
 883                 if ((IN6_IS_ADDR_LINKLOCAL(&sin6_new->sin6_addr) &&
 884                      IN6_IS_ADDR_LINKLOCAL(&sin6_svc->sin6_addr)) ||
 885                     (IN6_IS_ADDR_SITELOCAL(&sin6_new->sin6_addr) &&
 886                      IN6_IS_ADDR_SITELOCAL(&sin6_svc->sin6_addr))) {
 887                         sin6_new->sin6_scope_id = sin6_svc->sin6_scope_id;
 888                 }
 889         }
 890 #endif
 891         return 1;
 892 }
 893
 894 int
 895 __rpc_sockisbound(SOCKET fd)
 896 {
 897         struct sockaddr_storage ss;
 898         union {
 899                 struct sockaddr_in  sin;
 900                 struct sockaddr_in6 sin6;
 901 #ifdef AF_LOCAL
 902                 struct sockaddr_un  usin;
 903 #endif
 904         } u_addr;
 905         socklen_t slen;
 906
 907         slen = sizeof (struct sockaddr_storage);
 908         if (getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) == SOCKET_ERROR)
 909                 return 0;
 910
 911         switch (ss.ss_family) {
 912                 case AF_INET:
 913                         memcpy(&u_addr.sin, &ss, sizeof(u_addr.sin));
 914                         return (u_addr.sin.sin_port != 0);
 915 #ifdef INET6
 916                 case AF_INET6:
 917                         memcpy(&u_addr.sin6, &ss, sizeof(u_addr.sin6));
 918                         return (u_addr.sin6.sin6_port != 0);
 919 #endif
 920 #ifdef AF_LOCAL
 921                 case AF_LOCAL:
 922                         /* XXX check this */
 923                         memcpy(&u_addr.usin, &ss, sizeof(u_addr.usin));
 924                         return (u_addr.usin.sun_path[0] != 0);
 925 #endif
 926                 default:
 927                         break;
 928         }
 929
 930         return 0;
 931 }
 932
 933 /*
 934  * Helper function to set up a netbuf
 935  */
 936 struct netbuf *
 937 __rpc_set_netbuf(struct netbuf *nb, const void *ptr, size_t len)
 938 {
 939         if (nb->len != len) {
 940                 if (nb->len)
 941                         mem_free(nb->buf, nb->len);
 942                 nb->buf = mem_alloc(len);
 943                 if (nb->buf == NULL)
 944                         return NULL;
 945
 946                 nb->maxlen = nb->len = len;
 947         }
 948         memcpy(nb->buf, ptr, len);
 949         return nb;
 950 }