src/gns/w32nsp-resolve.c

   1 /*
   2      This file is part of GNUnet.
   3      Copyright (C) 2012 GNUnet e.V.
   4
   5      GNUnet is free software; you can redistribute it and/or modify
   6      it under the terms of the GNU General Public License as published
   7      by the Free Software Foundation; either version 3, or (at your
   8      option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      General Public License for more details.
  14
  15      You should have received a copy of the GNU General Public License
  16      along with GNUnet; see the file COPYING.  If not, write to the
  17      Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18      Boston, MA 02110-1301, USA.
  19 */
  20 /**
  21  * @file gns/w32nsp-resolve.c
  22  * @brief W32 integration for GNS
  23  * @author LRN
  24  */
  25 #include <ws2tcpip.h>
  26 #include <windows.h>
  27 #include <nspapi.h>
  28 #include <ws2spi.h>
  29 #include <nspapi.h>
  30 #include <initguid.h>
  31 #include "gnunet_w32nsp_lib.h"
  32 #include <stdio.h>
  33
  34 typedef int (WSPAPI *LPNSPSTARTUP) (LPGUID lpProviderId, LPNSP_ROUTINE lpnspRoutines);
  35
  36 GUID host = {0x0002a800,0,0,{ 0xC0,0,0,0,0,0,0,0x46 }};
  37 GUID ip4 = {0x00090035,0,1,{ 0xc0,0,0,0,0,0,0,0x046}};
  38 GUID ip6 = {0x00090035,0,0x001c, { 0xc0,0,0,0,0,0,0,0x046}};
  39
  40 DEFINE_GUID(W32_DNS, 0x22059D40, 0x7E9E, 0x11CF, 0xAE, 0x5A, 0x00, 0xAA, 0x00, 0xA7, 0x11, 0x2B);
  41
  42 #define DEFINE_DNS_GUID(a,x) DEFINE_GUID(a, 0x00090035, 0x0000, x, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46)
  43 DEFINE_DNS_GUID(SVCID_DNS_TYPE_A, 0x0001);
  44 DEFINE_DNS_GUID(SVCID_DNS_TYPE_NS, 0x0002);
  45 DEFINE_DNS_GUID(SVCID_DNS_TYPE_CNAME, 0x0005);
  46 DEFINE_DNS_GUID(SVCID_DNS_TYPE_SOA, 0x0006);
  47 DEFINE_DNS_GUID(SVCID_DNS_TYPE_PTR, 0x000c);
  48 DEFINE_DNS_GUID(SVCID_DNS_TYPE_MX, 0x000f);
  49 DEFINE_DNS_GUID(SVCID_DNS_TYPE_TEXT, 0x0010);
  50 DEFINE_DNS_GUID(SVCID_DNS_TYPE_AAAA, 0x001c);
  51 DEFINE_DNS_GUID(SVCID_DNS_TYPE_SRV, 0x0021);
  52 DEFINE_GUID(SVCID_HOSTNAME, 0x0002a800, 0x0000, 0x0000, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
  53 DEFINE_GUID(SVCID_INET_HOSTADDRBYNAME, 0x0002a803, 0x0000, 0x0000, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
  54
  55 //
  56 // Utility to turn a list of offsets into a list of addresses. Used
  57 // to convert structures returned as BLOBs.
  58 //
  59
  60 VOID
  61 FixList(PCHAR ** List, PCHAR Base)
  62 {
  63     if(*List)
  64     {
  65         PCHAR * Addr;
  66
  67         Addr = *List = (PCHAR *)( ((DWORD)*List + Base) );
  68         while(*Addr)
  69         {
  70             *Addr = (PCHAR)(((DWORD)*Addr + Base));
  71             Addr++;
  72         }
  73     }
  74 }
  75
  76
  77 //
  78 // Routine to convert a hostent returned in a BLOB to one with
  79 // usable pointers. The structure is converted in-place.
  80 //
  81 VOID
  82 UnpackHostEnt(struct hostent * hostent)
  83 {
  84      PCHAR pch;
  85
  86      pch = (PCHAR)hostent;
  87
  88      if(hostent->h_name)
  89      {
  90          hostent->h_name = (PCHAR)((DWORD)hostent->h_name + pch);
  91      }
  92      FixList(&hostent->h_aliases, pch);
  93      FixList(&hostent->h_addr_list, pch);
  94 }
  95
  96
  97 static void
  98 print_hostent (struct hostent *he)
  99 {
 100   int i;
 101   char **pAlias;
 102
 103   printf("\tOfficial name: %s\n", he->h_name);
 104   for (i=0, pAlias = he->h_aliases; *pAlias != 0; pAlias++) {
 105       printf("\tAlternate name #%d: %s\n", ++i, *pAlias);
 106   }
 107   printf("\tAddress type: ");
 108   switch (he->h_addrtype) {
 109   case AF_INET:
 110       printf("AF_INET\n");
 111       break;
 112   case AF_INET6:
 113       printf("AF_INET6\n");
 114       break;
 115   case AF_NETBIOS:
 116       printf("AF_NETBIOS\n");
 117       break;
 118   default:
 119       printf(" %d\n", he->h_addrtype);
 120       break;
 121   }
 122   printf("\tAddress length: %d\n", he->h_length);
 123
 124   if (he->h_addrtype == AF_INET) {
 125     struct sockaddr_in addr;
 126     memset (&addr, 0, sizeof (addr));
 127     addr.sin_family = AF_INET;
 128     addr.sin_port = 0;
 129     i = 0;
 130     while (he->h_addr_list[i] != 0) {
 131       char buf[1024];
 132       DWORD buflen = 1024;
 133       addr.sin_addr = *(struct in_addr *) he->h_addr_list[i++];
 134       if (NO_ERROR == WSAAddressToStringA ((LPSOCKADDR) &addr, sizeof (addr), NULL, buf, &buflen))
 135         printf("\tIPv4 Address #%d: %s\n", i, buf);
 136       else
 137         printf("\tIPv4 Address #%d: Can't convert: %lu\n", i, GetLastError ());
 138     }
 139   } else if (he->h_addrtype == AF_INET6) {
 140     struct sockaddr_in6 addr;
 141     memset (&addr, 0, sizeof (addr));
 142     addr.sin6_family = AF_INET6;
 143     addr.sin6_port = 0;
 144     i = 0;
 145     while (he->h_addr_list[i] != 0) {
 146       char buf[1024];
 147       DWORD buflen = 1024;
 148       addr.sin6_addr = *(struct in6_addr *) he->h_addr_list[i++];
 149       if (NO_ERROR == WSAAddressToStringA ((LPSOCKADDR) &addr, sizeof (addr), NULL, buf, &buflen))
 150         printf("\tIPv6 Address #%d: %s\n", i, buf);
 151       else
 152         printf("\tIPv6 Address #%d: Can't convert: %lu\n", i, GetLastError ());
 153     }
 154   }
 155 }
 156
 157
 158 int
 159 main (int argc, char **argv)
 160 {
 161   int ret;
 162   int r = 1;
 163   WSADATA wsd;
 164   GUID prov;
 165   GUID sc;
 166   wchar_t *cmdl;
 167   int wargc;
 168   wchar_t **wargv;
 169
 170   if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
 171   {
 172     fprintf (stderr, "WSAStartup() failed: %lu\n", GetLastError());
 173     return 5;
 174   }
 175
 176   cmdl = GetCommandLineW ();
 177   if (cmdl == NULL)
 178   {
 179     WSACleanup();
 180     return 2;
 181   }
 182   wargv = CommandLineToArgvW (cmdl, &wargc);
 183   if (wargv == NULL)
 184   {
 185     WSACleanup();
 186     return 3;
 187   }
 188   r = 4;
 189
 190   if (wargc == 5)
 191   {
 192     if (wcscmp (wargv[1], L"A") == 0)
 193       sc = SVCID_DNS_TYPE_A;
 194     else if (wcscmp (wargv[1], L"AAAA") == 0)
 195       sc = SVCID_DNS_TYPE_AAAA;
 196     else if (wcscmp (wargv[1], L"name") == 0)
 197       sc = SVCID_HOSTNAME;
 198     else if (wcscmp (wargv[1], L"addr") == 0)
 199       sc = SVCID_INET_HOSTADDRBYNAME;
 200     else
 201       wargc -= 1;
 202     if (wcscmp (wargv[4], L"mswdns") == 0)
 203       prov = W32_DNS;
 204     else if (wcscmp (wargv[4], L"gnunetdns") == 0)
 205       prov = GNUNET_NAMESPACE_PROVIDER_DNS;
 206     else
 207       wargc -= 1;
 208   }
 209   else if (wargc == 3)
 210   {
 211   }
 212   else
 213   {
 214     fprintf (stderr, "Usage: %S <record type> <service name> <NSP library path> <NSP id>\n"
 215         "record type      - one of the following: A | AAAA | name | addr\n"
 216         "service name     - a string to resolve; \" \" (a space) means 'blank'\n"
 217         "NSP library path - path to libw32nsp\n"
 218         "NSP id           - one of the following: mswdns | gnunetdns\n",
 219         wargv[0]);
 220   }
 221
 222   if (wargc == 5)
 223   {
 224     HMODULE nsp;
 225
 226     nsp = LoadLibraryW (wargv[3]);
 227     if (nsp == NULL)
 228     {
 229       fprintf (stderr, "Failed to load library `%S'\n", wargv[3]);
 230     }
 231     else
 232     {
 233       LPNSPSTARTUP startup = (LPNSPSTARTUP) GetProcAddress (nsp, "NSPStartup");
 234       if (startup == NULL)
 235         startup = (LPNSPSTARTUP) GetProcAddress (nsp, "NSPStartup@8");
 236       if (startup != NULL)
 237       {
 238         NSP_ROUTINE api;
 239         api.cbSize = sizeof (api);
 240         ret = startup (&prov, &api);
 241         if (NO_ERROR != ret)
 242           fprintf (stderr, "startup failed: %lu\n", GetLastError ());
 243         else
 244         {
 245           HANDLE lookup;
 246           WSAQUERYSETW search;
 247           char buf[4096];
 248           WSAQUERYSETW *result = (WSAQUERYSETW *) buf;
 249           DWORD resultsize;
 250           DWORD err;
 251           memset (&search, 0, sizeof (search));
 252           search.dwSize = sizeof (search);
 253           search.lpszServiceInstanceName = (wcscmp (wargv[2], L" ") == 0) ? NULL : wargv[2];
 254           search.lpServiceClassId = &sc;
 255           search.lpNSProviderId = &prov;
 256           search.dwNameSpace = NS_ALL;
 257           ret = api.NSPLookupServiceBegin (&prov, &search, NULL, LUP_RETURN_ALL, &lookup);
 258           if (ret != NO_ERROR)
 259           {
 260             fprintf (stderr, "lookup start failed\n");
 261           }
 262           else
 263           {
 264             resultsize = 4096;
 265             ret = api.NSPLookupServiceNext (lookup, LUP_RETURN_ALL, &resultsize, result);
 266             err = GetLastError ();
 267             if (ret != NO_ERROR)
 268             {
 269               fprintf (stderr, "lookup next failed: %lu\n", err);
 270             }
 271             else
 272             {
 273               int i;
 274               printf ("Got result:\n");
 275               printf ("  lpszServiceInstanceName: %S\n", result->lpszServiceInstanceName ? result->lpszServiceInstanceName : L"NULL");
 276               if (result->lpServiceClassId)
 277                 printf ("  lpServiceClassId:        { 0x%08lX,0x%04X,0x%04X, { 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X } }\n",
 278                     result->lpServiceClassId->Data1, result->lpServiceClassId->Data2, result->lpServiceClassId->Data3, result->lpServiceClassId->Data4[0],
 279                     result->lpServiceClassId->Data4[1], result->lpServiceClassId->Data4[2], result->lpServiceClassId->Data4[3], result->lpServiceClassId->Data4[4],
 280                     result->lpServiceClassId->Data4[5], result->lpServiceClassId->Data4[6], result->lpServiceClassId->Data4[7]);
 281               else
 282                 printf ("  lpServiceClassId:        NULL\n");
 283               if (result->lpVersion)
 284                 printf ("  lpVersion:               0x%08lX, %d\n", result->lpVersion->dwVersion, result->lpVersion->ecHow);
 285               else
 286                 printf ("  lpVersion:               NULL\n");
 287               printf ("  lpszComment:             %S\n", result->lpszComment ? result->lpszComment : L"NULL");
 288               printf ("  dwNameSpace:             %lu\n", result->dwNameSpace);
 289               if (result->lpNSProviderId)
 290                 printf ("  lpNSProviderId:          { 0x%08lX,0x%04X,0x%04X, { 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X, 0x%02X } }\n",
 291                     result->lpNSProviderId->Data1, result->lpNSProviderId->Data2, result->lpNSProviderId->Data3, result->lpNSProviderId->Data4[0],
 292                     result->lpNSProviderId->Data4[1], result->lpNSProviderId->Data4[2], result->lpNSProviderId->Data4[3], result->lpNSProviderId->Data4[4],
 293                     result->lpNSProviderId->Data4[5], result->lpNSProviderId->Data4[6], result->lpNSProviderId->Data4[7]);
 294               else
 295                 printf ("  lpNSProviderId:          NULL\n");
 296               printf ("  lpszContext:             %S\n", result->lpszContext ? result->lpszContext : L"NULL");
 297               printf ("  dwNumberOfProtocols:     %lu\n", result->dwNumberOfProtocols);
 298               printf ("  lpszQueryString:         %S\n", result->lpszQueryString ? result->lpszQueryString : L"NULL");
 299               printf ("  dwNumberOfCsAddrs:       %lu\n", result->dwNumberOfCsAddrs);
 300               for (i = 0; i < result->dwNumberOfCsAddrs; i++)
 301               {
 302                 switch (result->lpcsaBuffer[i].iSocketType)
 303                 {
 304                 case SOCK_STREAM:
 305                   printf ("    %d: iSocketType = SOCK_STREAM\n", i);
 306                   break;
 307                 case SOCK_DGRAM:
 308                   printf ("    %d: iSocketType = SOCK_DGRAM\n", i);
 309                   break;
 310                 default:
 311                   printf ("    %d: iSocketType = %d\n", i, result->lpcsaBuffer[i].iSocketType);
 312                 }
 313                 switch (result->lpcsaBuffer[i].iProtocol)
 314                 {
 315                 case IPPROTO_TCP:
 316                   printf ("    %d: iProtocol   = IPPROTO_TCP\n", i);
 317                   break;
 318                 case IPPROTO_UDP:
 319                   printf ("    %d: iProtocol   = IPPROTO_UDP\n", i);
 320                   break;
 321                 default:
 322                   printf ("    %d: iProtocol   = %d\n", i, result->lpcsaBuffer[i].iProtocol);
 323                 }
 324                 switch (result->lpcsaBuffer[i].LocalAddr.lpSockaddr->sa_family)
 325                 {
 326                 case AF_INET:
 327                   printf ("    %d: loc family  = AF_INET\n", i);
 328                   break;
 329                 case AF_INET6:
 330                   printf ("    %d: loc family  = AF_INET6\n", i);
 331                   break;
 332                 default:
 333                   printf ("    %d: loc family  = %hu\n", i, result->lpcsaBuffer[i].LocalAddr.lpSockaddr->sa_family);
 334                 }
 335                 switch (result->lpcsaBuffer[i].RemoteAddr.lpSockaddr->sa_family)
 336                 {
 337                 case AF_INET:
 338                   printf ("    %d: rem family  = AF_INET\n", i);
 339                   break;
 340                 case AF_INET6:
 341                   printf ("    %d: rem family  = AF_INET6\n", i);
 342                   break;
 343                 default:
 344                   printf ("    %d: rem family = %hu\n", i, result->lpcsaBuffer[i].RemoteAddr.lpSockaddr->sa_family);
 345                 }
 346                 char buf[1024];
 347                 DWORD buflen = 1024;
 348                 if (NO_ERROR == WSAAddressToStringA (result->lpcsaBuffer[i].LocalAddr.lpSockaddr, result->lpcsaBuffer[i].LocalAddr.iSockaddrLength, NULL, buf, &buflen))
 349                   printf("\tLocal Address #%d: %s\n", i, buf);
 350                 else
 351                   printf("\tLocal Address #%d: Can't convert: %lu\n", i, GetLastError ());
 352                 buflen = 1024;
 353                 if (NO_ERROR == WSAAddressToStringA (result->lpcsaBuffer[i].RemoteAddr.lpSockaddr, result->lpcsaBuffer[i].RemoteAddr.iSockaddrLength, NULL, buf, &buflen))
 354                   printf("\tRemote Address #%d: %s\n", i, buf);
 355                 else
 356                   printf("\tRemote Address #%d: Can't convert: %lu\n", i, GetLastError ());
 357               }
 358               printf ("  dwOutputFlags:           0x%08lX\n", result->dwOutputFlags);
 359               printf ("  lpBlob:                  0x%p\n", result->lpBlob);
 360               if (result->lpBlob)
 361               {
 362                 struct hostent *he = malloc (result->lpBlob->cbSize);
 363                 if (he != NULL)
 364                 {
 365                   GNUNET_memcpy (he, result->lpBlob->pBlobData, result->lpBlob->cbSize);
 366                   UnpackHostEnt (he);
 367                   print_hostent (he);
 368                   free (he);
 369                 }
 370               }
 371             }
 372             ret = api.NSPLookupServiceEnd (lookup);
 373             if (ret != NO_ERROR)
 374               printf ("NSPLookupServiceEnd() failed: %lu\n", GetLastError ());
 375           }
 376           api.NSPCleanup (&prov);
 377         }
 378       }
 379       FreeLibrary (nsp);
 380     }
 381   }
 382   else if (wargc == 3)
 383   {
 384     int s;
 385     ADDRINFOW hints;
 386     ADDRINFOW *result;
 387     ADDRINFOW *pos;
 388
 389     memset (&hints, 0, sizeof (struct addrinfo));
 390     hints.ai_family = AF_UNSPEC;
 391     hints.ai_socktype = SOCK_STREAM;
 392
 393     if (0 != (s = GetAddrInfoW (wargv[2], NULL, &hints, &result)))
 394     {
 395       fprintf (stderr, "Cound not resolve `%S' using GetAddrInfoW: %lu\n",
 396           wargv[2], GetLastError ());
 397     }
 398     else
 399     {
 400       for (pos = result; pos != NULL; pos = pos->ai_next)
 401       {
 402         wchar_t tmpbuf[1024];
 403         DWORD buflen = 1024;
 404         if (0 == WSAAddressToStringW (pos->ai_addr, pos->ai_addrlen, NULL, tmpbuf, &buflen))
 405           fprintf (stderr, "Result:\n"
 406                          "  flags: 0x%X\n"
 407                          "  family: 0x%X\n"
 408                          "  socktype: 0x%X\n"
 409                          "  protocol: 0x%X\n"
 410                          "  addrlen: %u\n"
 411                          "  addr: %S\n"
 412                          "  canonname: %S\n",
 413                          pos->ai_flags,
 414                          pos->ai_family,
 415                          pos->ai_socktype,
 416                          pos->ai_protocol,
 417                          pos->ai_addrlen,
 418                          tmpbuf,
 419                          pos->ai_canonname);
 420         else
 421           fprintf (stderr, "Result:\n"
 422                          "  flags: 0x%X\n"
 423                          "  family: 0x%X\n"
 424                          "  socktype: 0x%X\n"
 425                          "  protocol: 0x%X\n"
 426                          "  addrlen: %u\n"
 427                          "  addr: %S\n"
 428                          "  canonname: %S\n",
 429                          pos->ai_flags,
 430                          pos->ai_family,
 431                          pos->ai_socktype,
 432                          pos->ai_protocol,
 433                          pos->ai_addrlen,
 434                          L"<can't stringify>",
 435                          pos->ai_canonname);
 436       }
 437       if (NULL != result)
 438         FreeAddrInfoW (result);
 439     }
 440   }
 441   WSACleanup();
 442   return r;
 443 }