source/rpc_server/srv_util.c

   1 #define OLD_NTDOMAIN 1
   2
   3 /*
   4  *  Unix SMB/Netbios implementation.
   5  *  Version 1.9.
   6  *  RPC Pipe client / server routines
   7  *  Copyright (C) Andrew Tridgell              1992-1998
   8  *  Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
   9  *  Copyright (C) Paul Ashton                  1997-1998.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 /*  this module apparently provides an implementation of DCE/RPC over a
  27  *  named pipe (IPC$ connection using SMBtrans).  details of DCE/RPC
  28  *  documentation are available (in on-line form) from the X-Open group.
  29  *
  30  *  this module should provide a level of abstraction between SMB
  31  *  and DCE/RPC, while minimising the amount of mallocs, unnecessary
  32  *  data copies, and network traffic.
  33  *
  34  *  in this version, which takes a "let's learn what's going on and
  35  *  get something running" approach, there is additional network
  36  *  traffic generated, but the code should be easier to understand...
  37  *
  38  *  ... if you read the docs.  or stare at packets for weeks on end.
  39  *
  40  */
  41
  42 #include "includes.h"
  43
  44 extern int DEBUGLEVEL;
  45
  46 /*
  47  * A list of the rids of well known BUILTIN and Domain users
  48  * and groups.
  49  */
  50
  51 rid_name builtin_alias_rids[] =
  52 {
  53     { BUILTIN_ALIAS_RID_ADMINS       , "Administrators" },
  54     { BUILTIN_ALIAS_RID_USERS        , "Users" },
  55     { BUILTIN_ALIAS_RID_GUESTS       , "Guests" },
  56     { BUILTIN_ALIAS_RID_POWER_USERS  , "Power Users" },
  57
  58     { BUILTIN_ALIAS_RID_ACCOUNT_OPS  , "Account Operators" },
  59     { BUILTIN_ALIAS_RID_SYSTEM_OPS   , "System Operators" },
  60     { BUILTIN_ALIAS_RID_PRINT_OPS    , "Print Operators" },
  61     { BUILTIN_ALIAS_RID_BACKUP_OPS   , "Backup Operators" },
  62     { BUILTIN_ALIAS_RID_REPLICATOR   , "Replicator" },
  63     { 0                             , NULL }
  64 };
  65
  66 /* array lookup of well-known Domain RID users. */
  67 rid_name domain_user_rids[] =
  68 {
  69     { DOMAIN_USER_RID_ADMIN         , "Administrator" },
  70     { DOMAIN_USER_RID_GUEST         , "Guest" },
  71     { 0                             , NULL }
  72 };
  73
  74 /* array lookup of well-known Domain RID groups. */
  75 rid_name domain_group_rids[] =
  76 {
  77     { DOMAIN_GROUP_RID_ADMINS       , "Domain Admins" },
  78     { DOMAIN_GROUP_RID_USERS        , "Domain Users" },
  79     { DOMAIN_GROUP_RID_GUESTS       , "Domain Guests" },
  80     { 0                             , NULL }
  81 };
  82
  83 int make_dom_gids(char *gids_str, DOM_GID **ppgids)
  84 {
  85   char *ptr;
  86   pstring s2;
  87   int count;
  88   DOM_GID *gids;
  89
  90   *ppgids = NULL;
  91
  92   DEBUG(4,("make_dom_gids: %s\n", gids_str));
  93
  94   if (gids_str == NULL || *gids_str == 0)
  95     return 0;
  96
  97   for (count = 0, ptr = gids_str;
  98        next_token(&ptr, s2, NULL, sizeof(s2));
  99        count++)
 100     ;
 101
 102   gids = (DOM_GID *)malloc( sizeof(DOM_GID) * count );
 103   if(!gids)
 104   {
 105     DEBUG(0,("make_dom_gids: malloc fail !\n"));
 106     return 0;
 107   }
 108
 109   for (count = 0, ptr = gids_str;
 110        next_token(&ptr, s2, NULL, sizeof(s2)) &&
 111                count < LSA_MAX_GROUPS;
 112        count++)
 113   {
 114     /* the entries are of the form GID/ATTR, ATTR being optional.*/
 115     char *attr;
 116     uint32 rid = 0;
 117     int i;
 118
 119     attr = strchr(s2,'/');
 120     if (attr)
 121       *attr++ = 0;
 122
 123     if (!attr || !*attr)
 124       attr = "7"; /* default value for attribute is 7 */
 125
 126     /* look up the RID string and see if we can turn it into a rid number */
 127     for (i = 0; builtin_alias_rids[i].name != NULL; i++)
 128     {
 129       if (strequal(builtin_alias_rids[i].name, s2))
 130       {
 131         rid = builtin_alias_rids[i].rid;
 132         break;
 133       }
 134     }
 135
 136     if (rid == 0)
 137       rid = atoi(s2);
 138
 139     if (rid == 0)
 140     {
 141       DEBUG(1,("make_dom_gids: unknown well-known alias RID %s/%s\n", s2, attr));
 142       count--;
 143     }
 144     else
 145     {
 146       gids[count].g_rid = rid;
 147       gids[count].attr  = atoi(attr);
 148
 149       DEBUG(5,("group id: %d attr: %d\n", gids[count].g_rid, gids[count].attr));
 150     }
 151   }
 152
 153   *ppgids = gids;
 154   return count;
 155 }
 156
 157
 158 /*******************************************************************
 159  gets a domain user's groups
 160  ********************************************************************/
 161 void get_domain_user_groups(char *domain_groups, char *user)
 162 {
 163         pstring tmp;
 164
 165         if (domain_groups == NULL || user == NULL) return;
 166
 167         /* any additional groups this user is in.  e.g power users */
 168         pstrcpy(domain_groups, lp_domain_groups());
 169
 170         /* can only be a user or a guest.  cannot be guest _and_ admin */
 171         if (user_in_list(user, lp_domain_guest_group()))
 172         {
 173                 slprintf(tmp, sizeof(tmp) - 1, " %ld/7 ", DOMAIN_GROUP_RID_GUESTS);
 174                 pstrcat(domain_groups, tmp);
 175
 176                 DEBUG(3,("domain guest group access %s granted\n", tmp));
 177         }
 178         else
 179         {
 180                 slprintf(tmp, sizeof(tmp) -1, " %ld/7 ", DOMAIN_GROUP_RID_USERS);
 181                 pstrcat(domain_groups, tmp);
 182
 183                 DEBUG(3,("domain group access %s granted\n", tmp));
 184
 185                 if (user_in_list(user, lp_domain_admin_group()))
 186                 {
 187                         slprintf(tmp, sizeof(tmp) - 1, " %ld/7 ", DOMAIN_GROUP_RID_ADMINS);
 188                         pstrcat(domain_groups, tmp);
 189
 190                         DEBUG(3,("domain admin group access %s granted\n", tmp));
 191                 }
 192         }
 193 }
 194
 195
 196 /*******************************************************************
 197  lookup_group_name
 198  ********************************************************************/
 199 uint32 lookup_group_name(uint32 rid, char *group_name, uint32 *type)
 200 {
 201         int i = 0;
 202         (*type) = SID_NAME_DOM_GRP;
 203
 204         DEBUG(5,("lookup_group_name: rid: %d", rid));
 205
 206         while (domain_group_rids[i].rid != rid && domain_group_rids[i].rid != 0)
 207         {
 208                 i++;
 209         }
 210
 211         if (domain_group_rids[i].rid != 0)
 212         {
 213                 fstrcpy(group_name, domain_group_rids[i].name);
 214                 DEBUG(5,(" = %s\n", group_name));
 215                 return 0x0;
 216         }
 217
 218         DEBUG(5,(" none mapped\n"));
 219         return NT_STATUS_NONE_MAPPED;
 220 }
 221
 222 /*******************************************************************
 223  lookup_alias_name
 224  ********************************************************************/
 225 uint32 lookup_alias_name(uint32 rid, char *alias_name, uint32 *type)
 226 {
 227         int i = 0;
 228         (*type) = SID_NAME_WKN_GRP;
 229
 230         DEBUG(5,("lookup_alias_name: rid: %d", rid));
 231
 232         while (builtin_alias_rids[i].rid != rid && builtin_alias_rids[i].rid != 0)
 233         {
 234                 i++;
 235         }
 236
 237         if (builtin_alias_rids[i].rid != 0)
 238         {
 239                 fstrcpy(alias_name, builtin_alias_rids[i].name);
 240                 DEBUG(5,(" = %s\n", alias_name));
 241                 return 0x0;
 242         }
 243
 244         DEBUG(5,(" none mapped\n"));
 245         return NT_STATUS_NONE_MAPPED;
 246 }
 247
 248 /*******************************************************************
 249  lookup_user_name
 250  ********************************************************************/
 251 uint32 lookup_user_name(uint32 rid, char *user_name, uint32 *type)
 252 {
 253         struct sam_disp_info *disp_info;
 254         int i = 0;
 255         (*type) = SID_NAME_USER;
 256
 257         DEBUG(5,("lookup_user_name: rid: %d", rid));
 258
 259         /* look up the well-known domain user rids first */
 260         while (domain_user_rids[i].rid != rid && domain_user_rids[i].rid != 0)
 261         {
 262                 i++;
 263         }
 264
 265         if (domain_user_rids[i].rid != 0)
 266         {
 267                 fstrcpy(user_name, domain_user_rids[i].name);
 268                 DEBUG(5,(" = %s\n", user_name));
 269                 return 0x0;
 270         }
 271
 272         /* ok, it's a user.  find the user account */
 273         become_root();
 274         disp_info = pdb_sam_to_dispinfo(pdb_getsampwrid(rid));
 275         unbecome_root();
 276
 277         if (disp_info != NULL)
 278         {
 279                 fstrcpy(user_name, disp_info->smb_name);
 280                 DEBUG(5,(" = %s\n", user_name));
 281                 return 0x0;
 282         }
 283
 284         DEBUG(5,(" none mapped\n"));
 285         return NT_STATUS_NONE_MAPPED;
 286 }
 287
 288 /*******************************************************************
 289  lookup_group_rid
 290  ********************************************************************/
 291 uint32 lookup_group_rid(char *group_name, uint32 *rid)
 292 {
 293         char *grp_name;
 294         int i = -1; /* start do loop at -1 */
 295
 296         do /* find, if it exists, a group rid for the group name*/
 297         {
 298                 i++;
 299                 (*rid) = domain_group_rids[i].rid;
 300                 grp_name = domain_group_rids[i].name;
 301
 302         } while (grp_name != NULL && !strequal(grp_name, group_name));
 303
 304         return (grp_name != NULL) ? 0 : NT_STATUS_NONE_MAPPED;
 305 }
 306
 307 /*******************************************************************
 308  lookup_alias_rid
 309  ********************************************************************/
 310 uint32 lookup_alias_rid(char *alias_name, uint32 *rid)
 311 {
 312         char *als_name;
 313         int i = -1; /* start do loop at -1 */
 314
 315         do /* find, if it exists, a alias rid for the alias name*/
 316         {
 317                 i++;
 318                 (*rid) = builtin_alias_rids[i].rid;
 319                 als_name = builtin_alias_rids[i].name;
 320
 321         } while (als_name != NULL && !strequal(als_name, alias_name));
 322
 323         return (als_name != NULL) ? 0 : NT_STATUS_NONE_MAPPED;
 324 }
 325
 326 /*******************************************************************
 327  lookup_user_rid
 328  ********************************************************************/
 329 uint32 lookup_user_rid(char *user_name, uint32 *rid)
 330 {
 331         SAM_ACCOUNT *sam_pass;
 332         (*rid) = 0;
 333
 334         /* find the user account */
 335         become_root();
 336         sam_pass = pdb_getsampwnam(user_name);
 337         unbecome_root();
 338
 339         if (sam_pass != NULL)
 340         {
 341                 *rid = pdb_get_user_rid(sam_pass);
 342                 return 0x0;
 343         }
 344
 345         return NT_STATUS_NONE_MAPPED;
 346 }
 347
 348 #undef OLD_NTDOMAIN