source/rpc_server/srv_unixinfo_nt.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines for unixinfo-pipe
   4  *  Copyright (C) Volker Lendecke 2005
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 /* This is the interface to the rpcunixinfo pipe. */
  22
  23 #include "includes.h"
  24 #include "nterr.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_RPC_SRV
  28
  29 /* Map a sid to a uid */
  30
  31 NTSTATUS _unixinfo_sid_to_uid(pipes_struct *p,
  32                               UNIXINFO_Q_SID_TO_UID *q_u,
  33                               UNIXINFO_R_SID_TO_UID *r_u)
  34 {
  35         uid_t uid;
  36
  37         r_u->uid.low = 0;
  38         r_u->uid.high = 0;
  39
  40         r_u->status = sid_to_uid(&q_u->sid, &uid);
  41         if (NT_STATUS_IS_OK(r_u->status))
  42                 r_u->uid.low = uid;
  43
  44         return r_u->status;
  45 }
  46
  47 /* Map a uid to a sid */
  48
  49 NTSTATUS _unixinfo_uid_to_sid(pipes_struct *p,
  50                               UNIXINFO_Q_UID_TO_SID *q_u,
  51                               UNIXINFO_R_UID_TO_SID *r_u)
  52 {
  53         DOM_SID sid;
  54
  55         r_u->status = NT_STATUS_NO_SUCH_USER;
  56
  57         if (q_u->uid.high == 0) {
  58                 r_u->status = uid_to_sid(&sid, q_u->uid.low);
  59         }
  60
  61         init_r_unixinfo_uid_to_sid(r_u,
  62                                 NT_STATUS_IS_OK(r_u->status) ? &sid : NULL);
  63
  64         return r_u->status;
  65 }
  66
  67 /* Map a sid to a gid */
  68
  69 NTSTATUS _unixinfo_sid_to_gid(pipes_struct *p,
  70                               UNIXINFO_Q_SID_TO_GID *q_u,
  71                               UNIXINFO_R_SID_TO_GID *r_u)
  72 {
  73         gid_t gid;
  74
  75         r_u->gid.low = 0;
  76         r_u->gid.high = 0;
  77
  78         r_u->status = sid_to_gid(&q_u->sid, &gid);
  79         if (NT_STATUS_IS_OK(r_u->status))
  80                 r_u->gid.low = gid;
  81
  82         return r_u->status;
  83 }
  84
  85 /* Map a gid to a sid */
  86
  87 NTSTATUS _unixinfo_gid_to_sid(pipes_struct *p,
  88                               UNIXINFO_Q_GID_TO_SID *q_u,
  89                               UNIXINFO_R_GID_TO_SID *r_u)
  90 {
  91         DOM_SID sid;
  92
  93         r_u->status = NT_STATUS_NO_SUCH_USER;
  94
  95         if (q_u->gid.high == 0) {
  96                 r_u->status = gid_to_sid(&sid, q_u->gid.low);
  97         }
  98
  99         init_r_unixinfo_gid_to_sid(r_u,
 100                                 NT_STATUS_IS_OK(r_u->status) ? &sid : NULL);
 101
 102         return r_u->status;
 103 }
 104
 105 /* Get unix struct passwd information */
 106
 107 NTSTATUS _unixinfo_getpwuid(pipes_struct *p,
 108                             UNIXINFO_Q_GETPWUID *q_u,
 109                             UNIXINFO_R_GETPWUID *r_u)
 110 {
 111         int i;
 112
 113         if (r_u->count > 1023) {
 114                 return NT_STATUS_INVALID_PARAMETER;
 115         }
 116
 117         r_u->info = TALLOC_ARRAY(p->mem_ctx, struct unixinfo_getpwuid,
 118                                  q_u->count);
 119
 120         if ((r_u->count > 0) && (r_u->info == NULL)) {
 121                 return NT_STATUS_NO_MEMORY;
 122         }
 123
 124         r_u->status = NT_STATUS_OK;
 125         r_u->count = q_u->count;
 126
 127         for (i=0; i<r_u->count; i++) {
 128                 struct passwd *pw;
 129                 char *homedir, *shell;
 130                 ssize_t len1, len2;
 131
 132                 r_u->info[i].status = NT_STATUS_NO_SUCH_USER;
 133                 r_u->info[i].homedir = "";
 134                 r_u->info[i].shell = "";
 135
 136                 if (q_u->uid[i].high != 0) {
 137                         DEBUG(10, ("64-bit uids not yet supported...\n"));
 138                         continue;
 139                 }
 140
 141                 pw = getpwuid(q_u->uid[i].low);
 142
 143                 if (pw == NULL) {
 144                         DEBUG(10, ("Did not find uid %d\n", q_u->uid[i].low));
 145                         continue;
 146                 }
 147
 148                 len1 = push_utf8_talloc(p->mem_ctx, &homedir, pw->pw_dir);
 149                 len2 = push_utf8_talloc(p->mem_ctx, &shell, pw->pw_shell);
 150
 151                 if ((len1 < 0) || (len2 < 0) || (homedir == NULL) ||
 152                     (shell == NULL)) {
 153                         DEBUG(3, ("push_utf8_talloc failed\n"));
 154                         r_u->info[i].status = NT_STATUS_NO_MEMORY;
 155                         continue;
 156                 }
 157
 158                 r_u->info[i].status = NT_STATUS_OK;
 159                 r_u->info[i].homedir = homedir;
 160                 r_u->info[i].shell = shell;
 161         }
 162
 163         return r_u->status;
 164 }