src/add-ons/kernel/file_systems/nfs4/RPCAuth.cpp

   1 /*
   2  * Copyright 2012 Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Paweł Dziepak, pdziepak@quarnos.org
   7  */
   8
   9
  10 #include "RPCAuth.h"
  11
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <unistd.h>
  15
  16 #include <AutoDeleter.h>
  17 #include <SupportDefs.h>
  18 #include <util/kernel_cpp.h>
  19
  20 #include "RPCDefs.h"
  21
  22
  23 using namespace RPC;
  24
  25
  26 Auth::Auth()
  27 {
  28 }
  29
  30
  31 const Auth*
  32 Auth::CreateNone()
  33 {
  34         Auth* auth = new(std::nothrow) Auth;
  35         if (auth == NULL)
  36                 return NULL;
  37
  38         auth->fStream.AddInt(AUTH_NONE);
  39         auth->fStream.AddOpaque(NULL, 0);
  40         if (auth->fStream.Error() != B_OK) {
  41                 delete auth;
  42                 return NULL;
  43         }
  44
  45         return auth;
  46 }
  47
  48
  49 const Auth*
  50 Auth::CreateSys()
  51 {
  52         Auth* auth = new(std::nothrow) Auth;
  53         if (auth == NULL)
  54                 return NULL;
  55         ObjectDeleter<Auth> authDeleter(auth);
  56
  57         XDR::WriteStream xdr;
  58         xdr.AddUInt(time(NULL));
  59
  60         char hostname[255];
  61         if (gethostname(hostname, 255) < 0)
  62                 strcpy(hostname, "unknown");
  63         xdr.AddString(hostname, 255);
  64
  65         xdr.AddUInt(getuid());
  66         xdr.AddUInt(getgid());
  67
  68         int count = getgroups(0, NULL);
  69         if (count < B_OK)
  70                 return NULL;
  71         gid_t* groups = (gid_t*)malloc(count * sizeof(gid_t));
  72         if (groups == NULL)
  73                 return NULL;
  74
  75         int len = getgroups(count, groups);
  76         if (len > 0) {
  77                 len = min_c(len, 16);
  78                 xdr.AddUInt(len);
  79                 for (int i = 0; i < len; i++)
  80                         xdr.AddUInt((uint32)groups[i]);
  81         } else
  82                 xdr.AddUInt(0);
  83         free(groups);
  84         if (xdr.Error() != B_OK)
  85                 return NULL;
  86
  87         auth->fStream.AddInt(AUTH_SYS);
  88         auth->fStream.AddOpaque(xdr);
  89         if (auth->fStream.Error() != B_OK)
  90                 return NULL;
  91
  92         authDeleter.Detach();
  93         return auth;
  94 }
  95