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 it
   6      under the terms of the GNU Affero General Public License as published
   7      by the Free Software Foundation, either version 3 of the License,
   8      or (at your 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      Affero General Public License for more details.
  14
  15      You should have received a copy of the GNU Affero General Public License
  16      along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18 /**
  19  * @file gns/w32nsp-resolve.c
  20  * @brief W32 integration for GNS
  21  * @author LRN
  22  */
  23 /* Instead of including gnunet_common.h */
  24 #define GNUNET_memcpy(dst,src,n) do { if (0 != n) { (void) memcpy (dst,src,n); } } while (0)
  25
  26 #include <ws2tcpip.h>
  27 #include <windows.h>
  28 #include <nspapi.h>
  29 #include <ws2spi.h>
  30 #include <nspapi.h>
  31 #include <initguid.h>
  32 #include "gnunet_w32nsp_lib.h"
  33 #include <stdio.h>
  34
  35 typedef int (WSPAPI *LPNSPSTARTUP) (LPGUID lpProviderId, LPNSP_ROUTINE lpnspRoutines);
  36
  37 GUID host = {0x0002a800,0,0,{ 0xC0,0,0,0,0,0,0,0x46 }};
  38 GUID ip4 = {0x00090035,0,1,{ 0xc0,0,0,0,0,0,0,0x046}};
  39 GUID ip6 = {0x00090035,0,0x001c, { 0xc0,0,0,0,0,0,0,0x046}};
  40
  41 DEFINE_GUID(W32_DNS, 0x22059D40, 0x7E9E, 0x11CF, 0xAE, 0x5A, 0x00, 0xAA, 0x00, 0xA7, 0x11, 0x2B);
  42
  43 #define DEFINE_DNS_GUID(a,x) DEFINE_GUID(a, 0x00090035, 0x0000, x, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46)
  44 DEFINE_DNS_GUID(SVCID_DNS_TYPE_A, 0x0001);
  45 DEFINE_DNS_GUID(SVCID_DNS_TYPE_NS, 0x0002);
  46 DEFINE_DNS_GUID(SVCID_DNS_TYPE_CNAME, 0x0005);
  47 DEFINE_DNS_GUID(SVCID_DNS_TYPE_SOA, 0x0006);
  48 DEFINE_DNS_GUID(SVCID_DNS_TYPE_PTR, 0x000c);
  49 DEFINE_DNS_GUID(SVCID_DNS_TYPE_MX, 0x000f);
  50 DEFINE_DNS_GUID(SVCID_DNS_TYPE_TEXT, 0x0010);
  51 DEFINE_DNS_GUID(SVCID_DNS_TYPE_AAAA, 0x001c);
  52 DEFINE_DNS_GUID(SVCID_DNS_TYPE_SRV, 0x0021);
  53 DEFINE_GUID(SVCID_HOSTNAME, 0x0002a800, 0x0000, 0x0000, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
  54 DEFINE_GUID(SVCID_INET_HOSTADDRBYNAME, 0x0002a803, 0x0000, 0x0000, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46);
  55
  56 //
  57 // Utility to turn a list of offsets into a list of addresses. Used
  58 // to convert structures returned as BLOBs.
  59 //
  60
  61 VOID
  62 FixList(PCHAR ** List, PCHAR Base)
  63 {
  64     if(*List)
  65     {
  66         PCHAR * Addr;
  67
  68         Addr = *List = (PCHAR *)( ((DWORD)*List + Base) );
  69         while(*Addr)
  70         {
  71             *Addr = (PCHAR)(((DWORD)*Addr + Base));
  72             Addr++;
  73         }
  74     }
  75 }
  76
  77
  78 //
  79 // Routine to convert a hostent returned in a BLOB to one with
  80 // usable pointers. The structure is converted in-place.
  81 //
  82 VOID
  83 UnpackHostEnt(struct hostent * hostent)
  84 {
  85      PCHAR pch;
  86
  87      pch = (PCHAR)hostent;
  88
  89      if(hostent->h_name)
  90      {
  91          hostent->h_name = (PCHAR)((DWORD)hostent->h_name + pch);
  92      }
  93      FixList(&hostent->h_aliases, pch);
  94      FixList(&hostent->h_addr_list, pch);
  95 }
  96
  97
  98 static void
  99 print_hostent (struct hostent *he)
 100 {
 101   int i;
 102   char **pAlias;
 103
 104   printf("\tOfficial name: %s\n", he->h_name);
 105   for (i=0, pAlias = he->h_aliases; *pAlias != 0; pAlias++) {
 106       printf("\tAlternate name #%d: %s\n", ++i, *pAlias);
 107   }
 108   printf("\tAddress type: ");
 109   switch (he->h_addrtype) {
 110   case AF_INET:
 111       printf("AF_INET\n");
 112       break;
 113   case AF_INET6:
 114       printf("AF_INET6\n");
 115       break;
 116   case AF_NETBIOS:
 117       printf("AF_NETBIOS\n");
 118       break;
 119   default:
 120       printf(" %d\n", he->h_addrtype);
 121       break;
 122   }
 123   printf("\tAddress length: %d\n", he->h_length);
 124
 125   if (he->h_addrtype == AF_INET) {
 126     struct sockaddr_in addr;
 127     memset (&addr, 0, sizeof (addr));
 128     addr.sin_family = AF_INET;
 129     addr.sin_port = 0;
 130     i = 0;
 131     while (he->h_addr_list[i] != 0) {
 132       char buf[1024];
 133       DWORD buflen = 1024;
 134       addr.sin_addr = *(struct in_addr *) he->h_addr_list[i++];
 135       if (NO_ERROR == WSAAddressToStringA ((LPSOCKADDR) &addr, sizeof (addr), NULL, buf, &buflen))
 136         printf("\tIPv4 Address #%d: %s\n", i, buf);
 137       else
 138         printf("\tIPv4 Address #%d: Can't convert: %lu\n", i, GetLastError ());
 139     }
 140   } else if (he->h_addrtype == AF_INET6) {
 141     struct sockaddr_in6 addr;
 142     memset (&addr, 0, sizeof (addr));
 143     addr.sin6_family = AF_INET6;
 144     addr.sin6_port = 0;
 145     i = 0;
 146     while (he->h_addr_list[i] != 0) {
 147       char buf[1024];
 148       DWORD buflen = 1024;
 149       addr.sin6_addr = *(struct in6_addr *) he->h_addr_list[i++];
 150       if (NO_ERROR == WSAAddressToStringA ((LPSOCKADDR) &addr, sizeof (addr), NULL, buf, &buflen))
 151         printf("\tIPv6 Address #%d: %s\n", i, buf);
 152       else
 153         printf("\tIPv6 Address #%d: Can't convert: %lu\n", i, GetLastError ());
 154     }
 155   }
 156 }
 157
 158
 159 int
 160 main (int argc, char **argv)
 161 {
 162   int ret;
 163   int r = 1;
 164   WSADATA wsd;
 165   GUID prov;
 166   GUID sc;
 167   wchar_t *cmdl;
 168   int wargc;
 169   wchar_t **wargv;
 170
 171   if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
 172   {
 173     fprintf (stderr, "WSAStartup() failed: %lu\n", GetLastError());
 174     return 5;
 175   }
 176
 177   cmdl = GetCommandLineW ();
 178   if (cmdl == NULL)
 179   {
 180     WSACleanup();
 181     return 2;
 182   }
 183   wargv = CommandLineToArgvW (cmdl, &wargc);
 184   if (wargv == NULL)
 185   {
 186     WSACleanup();
 187     return 3;
 188   }
 189   r = 4;
 190
 191   if (wargc == 5)
 192   {
 193     if (wcscmp (wargv[1], L"A") == 0)
 194       sc = SVCID_DNS_TYPE_A;
 195     else if (wcscmp (wargv[1], L"AAAA") == 0)
 196       sc = SVCID_DNS_TYPE_AAAA;
 197     else if (wcscmp (wargv[1], L"name") == 0)
 198       sc = SVCID_HOSTNAME;
 199     else if (wcscmp (wargv[1], L"addr") == 0)
 200       sc = SVCID_INET_HOSTADDRBYNAME;
 201     else
 202       wargc -= 1;
 203     if (wcscmp (wargv[4], L"mswdns") == 0)
 204       prov = W32_DNS;
 205     else if (wcscmp (wargv[4], L"gnunetdns") == 0)
 206       prov = GNUNET_NAMESPACE_PROVIDER_DNS;
 207     else
 208       wargc -= 1;
 209   }
 210   else if (wargc == 3)
 211   {
 212   }
 213   else
 214   {
 215     fprintf (stderr, "Usage: %S <record type> <service name> <NSP library path> <NSP id>\n"
 216         "record type      - one of the following: A | AAAA | name | addr\n"
 217         "service name     - a string to resolve; \" \" (a space) means 'blank'\n"
 218         "NSP library path - path to libw32nsp\n"
 219         "NSP id           - one of the following: mswdns | gnunetdns\n",
 220         wargv[0]);
 221   }
 222
 223   if (wargc == 5)
 224   {
 225     HMODULE nsp;
 226
 227     nsp = LoadLibraryW (wargv[3]);
 228     if (nsp == NULL)
 229     {
 230       fprintf (stderr, "Failed to load library `%S'\n", wargv[3]);
 231     }
 232     else
 233     {
 234       LPNSPSTARTUP startup = (LPNSPSTARTUP) GetProcAddress (nsp, "NSPStartup");
 235       if (startup == NULL)
 236         startup = (LPNSPSTARTUP) GetProcAddress (nsp, "NSPStartup@8");
 237       if (startup != NULL)
 238       {
 239         NSP_ROUTINE api;
 240         api.cbSize = sizeof (api);
 241         ret = startup (&prov, &api);
 242         if (NO_ERROR != ret)
 243           fprintf (stderr, "startup failed: %lu\n", GetLastError ());
 244         else
 245         {
 246           HANDLE lookup;
 247           WSAQUERYSETW search;
 248           char buf[4096];
 249           WSAQUERYSETW *result = (WSAQUERYSETW *) buf;
 250           DWORD resultsize;
 251           DWORD err;
 252           memset (&search, 0, sizeof (search));
 253           search.dwSize = sizeof (search);
 254           search.lpszServiceInstanceName = (wcscmp (wargv[2], L" ") == 0) ? NULL : wargv[2];
 255           search.lpServiceClassId = &sc;
 256           search.lpNSProviderId = &prov;
 257           search.dwNameSpace = NS_ALL;
 258           ret = api.NSPLookupServiceBegin (&prov, &search, NULL, LUP_RETURN_ALL, &lookup);
 259           if (ret != NO_ERROR)
 260           {
 261             fprintf (stderr, "lookup start failed\n");
 262           }
 263           else
 264           {
 265             resultsize = 4096;
 266             ret = api.NSPLookupServiceNext (lookup, LUP_RETURN_ALL, &resultsize, result);
 267             err = GetLastError ();
 268             if (ret != NO_ERROR)
 269             {
 270               fprintf (stderr, "lookup next failed: %lu\n", err);
 271             }
 272             else
 273             {
 274               int i;
 275               printf ("Got result:\n");
 276               printf ("  lpszServiceInstanceName: %S\n", result->lpszServiceInstanceName ? result->lpszServiceInstanceName : L"NULL");
 277               if (result->lpServiceClassId)
 278                 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",
 279                     result->lpServiceClassId->Data1, result->lpServiceClassId->Data2, result->lpServiceClassId->Data3, result->lpServiceClassId->Data4[0],
 280                     result->lpServiceClassId->Data4[1], result->lpServiceClassId->Data4[2], result->lpServiceClassId->Data4[3], result->lpServiceClassId->Data4[4],
 281                     result->lpServiceClassId->Data4[5], result->lpServiceClassId->Data4[6], result->lpServiceClassId->Data4[7]);
 282               else
 283                 printf ("  lpServiceClassId:        NULL\n");
 284               if (result->lpVersion)
 285                 printf ("  lpVersion:               0x%08lX, %d\n", result->lpVersion->dwVersion, result->lpVersion->ecHow);
 286               else
 287                 printf ("  lpVersion:               NULL\n");
 288               printf ("  lpszComment:             %S\n", result->lpszComment ? result->lpszComment : L"NULL");
 289               printf ("  dwNameSpace:             %lu\n", result->dwNameSpace);
 290               if (result->lpNSProviderId)
 291                 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",
 292                     result->lpNSProviderId->Data1, result->lpNSProviderId->Data2, result->lpNSProviderId->Data3, result->lpNSProviderId->Data4[0],
 293                     result->lpNSProviderId->Data4[1], result->lpNSProviderId->Data4[2], result->lpNSProviderId->Data4[3], result->lpNSProviderId->Data4[4],
 294                     result->lpNSProviderId->Data4[5], result->lpNSProviderId->Data4[6], result->lpNSProviderId->Data4[7]);
 295               else
 296                 printf ("  lpNSProviderId:          NULL\n");
 297               printf ("  lpszContext:             %S\n", result->lpszContext ? result->lpszContext : L"NULL");
 298               printf ("  dwNumberOfProtocols:     %lu\n", result->dwNumberOfProtocols);
 299               printf ("  lpszQueryString:         %S\n", result->lpszQueryString ? result->lpszQueryString : L"NULL");
 300               printf ("  dwNumberOfCsAddrs:       %lu\n", result->dwNumberOfCsAddrs);
 301               for (i = 0; i < result->dwNumberOfCsAddrs; i++)
 302               {
 303                 switch (result->lpcsaBuffer[i].iSocketType)
 304                 {
 305                 case SOCK_STREAM:
 306                   printf ("    %d: iSocketType = SOCK_STREAM\n", i);
 307                   break;
 308                 case SOCK_DGRAM:
 309                   printf ("    %d: iSocketType = SOCK_DGRAM\n", i);
 310                   break;
 311                 default:
 312                   printf ("    %d: iSocketType = %d\n", i, result->lpcsaBuffer[i].iSocketType);
 313                 }
 314                 switch (result->lpcsaBuffer[i].iProtocol)
 315                 {
 316                 case IPPROTO_TCP:
 317                   printf ("    %d: iProtocol   = IPPROTO_TCP\n", i);
 318                   break;
 319                 case IPPROTO_UDP:
 320                   printf ("    %d: iProtocol   = IPPROTO_UDP\n", i);
 321                   break;
 322                 default:
 323                   printf ("    %d: iProtocol   = %d\n", i, result->lpcsaBuffer[i].iProtocol);
 324                 }
 325                 switch (result->lpcsaBuffer[i].LocalAddr.lpSockaddr->sa_family)
 326                 {
 327                 case AF_INET:
 328                   printf ("    %d: loc family  = AF_INET\n", i);
 329                   break;
 330                 case AF_INET6:
 331                   printf ("    %d: loc family  = AF_INET6\n", i);
 332                   break;
 333                 default:
 334                   printf ("    %d: loc family  = %hu\n", i, result->lpcsaBuffer[i].LocalAddr.lpSockaddr->sa_family);
 335                 }
 336                 switch (result->lpcsaBuffer[i].RemoteAddr.lpSockaddr->sa_family)
 337                 {
 338                 case AF_INET:
 339                   printf ("    %d: rem family  = AF_INET\n", i);
 340                   break;
 341                 case AF_INET6:
 342                   printf ("    %d: rem family  = AF_INET6\n", i);
 343                   break;
 344                 default:
 345                   printf ("    %d: rem family = %hu\n", i, result->lpcsaBuffer[i].RemoteAddr.lpSockaddr->sa_family);
 346                 }
 347                 char buf[1024];
 348                 DWORD buflen = 1024;
 349                 if (NO_ERROR == WSAAddressToStringA (result->lpcsaBuffer[i].LocalAddr.lpSockaddr, result->lpcsaBuffer[i].LocalAddr.iSockaddrLength, NULL, buf, &buflen))
 350                   printf("\tLocal Address #%d: %s\n", i, buf);
 351                 else
 352                   printf("\tLocal Address #%d: Can't convert: %lu\n", i, GetLastError ());
 353                 buflen = 1024;
 354                 if (NO_ERROR == WSAAddressToStringA (result->lpcsaBuffer[i].RemoteAddr.lpSockaddr, result->lpcsaBuffer[i].RemoteAddr.iSockaddrLength, NULL, buf, &buflen))
 355                   printf("\tRemote Address #%d: %s\n", i, buf);
 356                 else
 357                   printf("\tRemote Address #%d: Can't convert: %lu\n", i, GetLastError ());
 358               }
 359               printf ("  dwOutputFlags:           0x%08lX\n", result->dwOutputFlags);
 360               printf ("  lpBlob:                  0x%p\n", result->lpBlob);
 361               if (result->lpBlob)
 362               {
 363                 struct hostent *he = malloc (result->lpBlob->cbSize);
 364                 if (he != NULL)
 365                 {
 366                   GNUNET_memcpy (he, result->lpBlob->pBlobData, result->lpBlob->cbSize);
 367                   UnpackHostEnt (he);
 368                   print_hostent (he);
 369                   free (he);
 370                 }
 371               }
 372             }
 373             ret = api.NSPLookupServiceEnd (lookup);
 374             if (ret != NO_ERROR)
 375               printf ("NSPLookupServiceEnd() failed: %lu\n", GetLastError ());
 376           }
 377           api.NSPCleanup (&prov);
 378         }
 379       }
 380       FreeLibrary (nsp);
 381     }
 382   }
 383   else if (wargc == 3)
 384   {
 385     int s;
 386     ADDRINFOW hints;
 387     ADDRINFOW *result;
 388     ADDRINFOW *pos;
 389
 390     memset (&hints, 0, sizeof (struct addrinfo));
 391     hints.ai_family = AF_UNSPEC;
 392     hints.ai_socktype = SOCK_STREAM;
 393
 394     if (0 != (s = GetAddrInfoW (wargv[2], NULL, &hints, &result)))
 395     {
 396       fprintf (stderr, "Cound not resolve `%S' using GetAddrInfoW: %lu\n",
 397           wargv[2], GetLastError ());
 398     }
 399     else
 400     {
 401       for (pos = result; pos != NULL; pos = pos->ai_next)
 402       {
 403         wchar_t tmpbuf[1024];
 404         DWORD buflen = 1024;
 405         if (0 == WSAAddressToStringW (pos->ai_addr, pos->ai_addrlen, NULL, tmpbuf, &buflen))
 406           fprintf (stderr, "Result:\n"
 407                          "  flags: 0x%X\n"
 408                          "  family: 0x%X\n"
 409                          "  socktype: 0x%X\n"
 410                          "  protocol: 0x%X\n"
 411                          "  addrlen: %u\n"
 412                          "  addr: %S\n"
 413                          "  canonname: %S\n",
 414                          pos->ai_flags,
 415                          pos->ai_family,
 416                          pos->ai_socktype,
 417                          pos->ai_protocol,
 418                          pos->ai_addrlen,
 419                          tmpbuf,
 420                          pos->ai_canonname);
 421         else
 422           fprintf (stderr, "Result:\n"
 423                          "  flags: 0x%X\n"
 424                          "  family: 0x%X\n"
 425                          "  socktype: 0x%X\n"
 426                          "  protocol: 0x%X\n"
 427                          "  addrlen: %u\n"
 428                          "  addr: %S\n"
 429                          "  canonname: %S\n",
 430                          pos->ai_flags,
 431                          pos->ai_family,
 432                          pos->ai_socktype,
 433                          pos->ai_protocol,
 434                          pos->ai_addrlen,
 435                          L"<can't stringify>",
 436                          pos->ai_canonname);
 437       }
 438       if (NULL != result)
 439         FreeAddrInfoW (result);
 440     }
 441   }
 442   WSACleanup();
 443   return r;
 444 }