winsup/cygserver/pwdgrp.cc

   1 /* pwdgrp.cc: Request account information
   2
   3 This file is part of Cygwin.
   4
   5 This software is a copyrighted work licensed under the terms of the
   6 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   7 details. */
   8
   9 #ifdef __OUTSIDE_CYGWIN__
  10 #include "woutsup.h"
  11
  12 #include <stdio.h>
  13 #include <errno.h>
  14 #include <pwd.h>
  15 #include <grp.h>
  16 #include <sys/cygwin.h>
  17
  18 #include "cygserver.h"
  19 #include "process.h"
  20 #include "transport.h"
  21
  22 #include "cygserver_pwdgrp.h"
  23
  24 #include <sddl.h>
  25
  26 client_request_pwdgrp::client_request_pwdgrp ()
  27   : client_request (CYGSERVER_REQUEST_PWDGRP,
  28                     &_parameters, sizeof (_parameters))
  29 {
  30 }
  31
  32 void
  33 client_request_pwdgrp::pwd_serve ()
  34 {
  35   struct passwd *pwd = NULL;
  36
  37   switch (_parameters.in.type)
  38     {
  39     case SID_arg:
  40       pwd = (struct passwd *) cygwin_internal (CW_GETPWSID, 0,
  41                                               &_parameters.in.arg.sid);
  42       break;
  43     case NAME_arg:
  44       pwd = getpwnam (_parameters.in.arg.name);
  45       break;
  46     case ID_arg:
  47       pwd = getpwuid (_parameters.in.arg.id);
  48       break;
  49     default:
  50       break;
  51     }
  52   if (pwd)
  53     msglen (snprintf (_parameters.out.line, sizeof _parameters.out.line,
  54                       "%s:%s:%u:%u:%s:%s:%s",
  55                       pwd->pw_name ?: "",
  56                       pwd->pw_passwd ?: "",
  57                       (uint32_t) pwd->pw_uid,
  58                       (uint32_t) pwd->pw_gid,
  59                       pwd->pw_gecos ?: "",
  60                       pwd->pw_dir ?: "",
  61                       pwd->pw_shell ?: "") + 1);
  62   else
  63     {
  64       switch (_parameters.in.type)
  65         {
  66         case SID_arg:
  67           {
  68             char *str;
  69             if (ConvertSidToStringSid (&_parameters.in.arg.sid, &str))
  70               {
  71                 debug_printf ("User <%s> failed", str);
  72                 LocalFree (str);
  73               }
  74           }
  75           break;
  76         case NAME_arg:
  77           debug_printf ("User <%s> failed", _parameters.in.arg.name);
  78           break;
  79         case ID_arg:
  80           debug_printf ("User <%u> failed", _parameters.in.arg.id);
  81           break;
  82         default:
  83           break;
  84         }
  85       _parameters.out.line[0] = '\0';
  86       msglen (0);
  87       error_code (ENOENT);
  88     }
  89 }
  90
  91 void
  92 client_request_pwdgrp::grp_serve ()
  93 {
  94   struct group *grp = NULL;
  95
  96   switch (_parameters.in.type)
  97     {
  98     case SID_arg:
  99       grp = (struct group *) cygwin_internal (CW_GETGRSID, 0,
 100                                               &_parameters.in.arg.sid);
 101       break;
 102     case NAME_arg:
 103       grp = getgrnam (_parameters.in.arg.name);
 104       break;
 105     case ID_arg:
 106       grp = getgrgid (_parameters.in.arg.id);
 107       break;
 108     default:
 109       break;
 110     }
 111   if (grp)
 112     msglen (snprintf (_parameters.out.line, sizeof _parameters.out.line,
 113                       "%s:%s:%u:",
 114                       grp->gr_name ?: "",
 115                       grp->gr_passwd ?: "",
 116                       (uint32_t) grp->gr_gid) + 1);
 117   else
 118     {
 119       switch (_parameters.in.type)
 120         {
 121         case SID_arg:
 122           {
 123             char *str;
 124             if (ConvertSidToStringSid (&_parameters.in.arg.sid, &str))
 125               {
 126                 debug_printf ("Group <%s> failed", str);
 127                 LocalFree (str);
 128               }
 129           }
 130           break;
 131         case NAME_arg:
 132           debug_printf ("Group <%s> failed", _parameters.in.arg.name);
 133           break;
 134         case ID_arg:
 135           debug_printf ("Group <%u> failed", _parameters.in.arg.id);
 136           break;
 137         default:
 138           break;
 139         }
 140       _parameters.out.line[0] = '\0';
 141       msglen (0);
 142       error_code (ENOENT);
 143     }
 144 }
 145
 146 void
 147 client_request_pwdgrp::serve (transport_layer_base *const conn,
 148                               process_cache *const cache)
 149 {
 150   debug_printf ("Request account information");
 151   if (msglen () < __builtin_offsetof (struct _pwdgrp_param_t::_pwdgrp_in_t, arg)
 152                   + sizeof (uint32_t)
 153       || msglen () > sizeof (_parameters.in))
 154     {
 155       syscall_printf ("bad request body length: got %lu", msglen ());
 156       error_code (EINVAL);
 157       msglen (0);
 158       return;
 159     }
 160   error_code (0);
 161   if (_parameters.in.group)
 162     grp_serve ();
 163   else
 164     pwd_serve ();
 165   debug_printf ("Request account information returns <%s> error %d", _parameters.out.line, error_code ());
 166 }
 167 #endif /* __OUTSIDE_CYGWIN__ */