X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Fgns%2Fw32nsp-install.c;h=7a8beb703097a57d789635375c0a5cacecffa01a;hb=4df7069dcd17ac39c786ee6f21455c96e6a6dbf4;hp=5c2ccf23e1a6ddaee3c363b21a365ba8bd6c5ab0;hpb=61c39c60565b386e0e12ea669556b030e8cd7180;p=oweals%2Fgnunet.git

diff --git a/src/gns/w32nsp-install.c b/src/gns/w32nsp-install.c
index 5c2ccf23e..7a8beb703 100644
--- a/src/gns/w32nsp-install.c
+++ b/src/gns/w32nsp-install.c
@@ -1,21 +1,19 @@
 /*
      This file is part of GNUnet.
-     (C) 2012 Christian Grothoff (and other contributing authors)
+     Copyright (C) 2012 GNUnet e.V.
 
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 3, or (at your
-     option) any later version.
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
 
      GNUnet is distributed in the hope that it will be useful, but
      WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
+     Affero General Public License for more details.
+    
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 /**
  * @file gns/w32nsp-install.c
@@ -23,10 +21,10 @@
  * @author LRN
  */
 
-#define INITGUID
+#include <ws2spi.h>
 #include <windows.h>
 #include <nspapi.h>
-#include <ws2spi.h>
+#include <initguid.h>
 #include "gnunet_w32nsp_lib.h"
 #include <stdio.h>
 
@@ -40,42 +38,104 @@ main (int argc, char **argv)
   wchar_t *cmdl;
   int wargc;
   wchar_t **wargv;
+  /* Allocate a 4K buffer to retrieve all the namespace providers */
+  DWORD dwInitialBufferLen = 4096;
+  DWORD dwBufferLen;
+  WSANAMESPACE_INFO *pi;
+  int p_count;
+  int i;
 
-  if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
+  if (WSAStartup (MAKEWORD (2,2), &wsd) != 0)
   {
-    fprintf (stderr, "WSAStartup() failed: %lu\n", GetLastError());
+    fprintf (stderr, "WSAStartup () failed: %lu\n", GetLastError ());
     return 5;
   }
 
+  dwBufferLen = dwInitialBufferLen;
+  pi = malloc (dwBufferLen);
+  if (NULL == pi)
+  {
+    fprintf (stderr, "malloc (%lu) failed: %d\n", dwBufferLen, errno);
+    WSACleanup ();
+    return 6;
+  }
+  p_count = WSAEnumNameSpaceProviders (&dwBufferLen, pi);
+  if (SOCKET_ERROR == p_count)
+  {
+    DWORD err = GetLastError ();
+    if (WSAEFAULT == err && dwBufferLen != dwInitialBufferLen)
+    {
+      free (pi);
+
+      pi = malloc (dwBufferLen);
+      if (pi == NULL)
+      {
+        fprintf (stderr, "malloc (%lu) failed: %d\n", dwBufferLen, errno);
+        WSACleanup ();
+        return 6;
+      }
+
+      p_count = WSAEnumNameSpaceProviders (&dwBufferLen, pi);
+      if (SOCKET_ERROR == p_count)
+      {
+        fprintf (stderr, "WSAEnumNameSpaceProviders (&%lu, %p) failed: %lu\n", dwBufferLen, pi, GetLastError ());
+        free (pi);
+        WSACleanup ();
+        return 7;
+      }
+    }
+    else
+    {
+      fprintf (stderr, "WSAEnumNameSpaceProviders (&%lu, %p) failed: %lu\n", dwBufferLen, pi, GetLastError ());
+      free (pi);
+      WSACleanup ();
+      return 8;
+    }
+  }
+  for (i= 0; i < p_count; i++)
+  {
+    if (IsEqualGUID (&pi[i].NSProviderId, &id))
+    {
+      fprintf (stderr, "GNUnet DNS provider is already installed\n");
+      free (pi);
+      WSACleanup ();
+      return 0;
+    }
+  }
+  free (pi);
+
   cmdl = GetCommandLineW ();
   if (cmdl == NULL)
   {
-    WSACleanup();
+    WSACleanup ();
     return 2;
   }
   wargv = CommandLineToArgvW (cmdl, &wargc);
   if (wargv == NULL)
   {
-    WSACleanup();
+    WSACleanup ();
     return 3;
   }
   r = 4;
 
   if (wargc == 2)
   {
-    ret = WSCInstallNameSpace (L"GNUnet DNS provider", wargv[1], NS_DNS, 1, &id);
+    ret = WSCInstallNameSpace (L"GNUnet DNS provider", wargv[1], NS_DNS, 0, &id);
     if (ret == NO_ERROR)
     {
+      fprintf (stderr, "Installed GNUnet DNS provider\n");
       r = 0;
     }
     else
     {
       r = 1;
       fprintf (stderr,
-          "WSCInstallNameSpace(L\"GNUnet DNS provider\", \"%S\", %d, 0, %p) failed: %lu\n",
+          "WSCInstallNameSpace (L\"GNUnet DNS provider\", \"%S\", %d, 0, %p) failed: %lu\n",
           wargv[1], NS_DNS, &id, GetLastError ());
     }
   }
-  WSACleanup();
+  else
+    fprintf (stderr, "Usage: %S <path-to-libw32nsp>\n", wargv[0]);
+  WSACleanup ();
   return r;
 }