source/passdb/util_sam_sid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
   6    Copyright (C) Jeremy Allison  1999
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24
  25 #define MAX_SID_NAMES   7
  26
  27 typedef struct _known_sid_users {
  28         uint32 rid;
  29         enum SID_NAME_USE sid_name_use;
  30         const char *known_user_name;
  31 } known_sid_users;
  32
  33 static struct sid_name_map_info
  34 {
  35         DOM_SID *sid;
  36         const char *name;
  37         const known_sid_users *known_users;
  38 } sid_name_map[MAX_SID_NAMES];
  39
  40 extern DOM_SID global_sid_Builtin;                              /* Local well-known domain */
  41 extern DOM_SID global_sid_World_Domain;         /* Everyone domain */
  42 extern DOM_SID global_sid_Creator_Owner_Domain;    /* Creator Owner domain */
  43 extern DOM_SID global_sid_NT_Authority;                 /* NT Authority */
  44
  45
  46 static BOOL sid_name_map_initialized = False;
  47 /* static known_sid_users no_users[] = {{0, 0, NULL}}; */
  48
  49 static const known_sid_users everyone_users[] = {
  50         { 0, SID_NAME_WKN_GRP, "Everyone" },
  51         {0, (enum SID_NAME_USE)0, NULL}};
  52
  53 static const known_sid_users creator_owner_users[] = {
  54         { 0, SID_NAME_WKN_GRP, "Creator Owner" },
  55         { 1, SID_NAME_WKN_GRP, "Creator Group" },
  56         {0, (enum SID_NAME_USE)0, NULL}};
  57
  58 static const known_sid_users nt_authority_users[] = {
  59         {  1, SID_NAME_ALIAS, "Dialup" },
  60         {  2, SID_NAME_ALIAS, "Network"},
  61         {  3, SID_NAME_ALIAS, "Batch"},
  62         {  4, SID_NAME_ALIAS, "Interactive"},
  63         {  6, SID_NAME_ALIAS, "Service"},
  64         {  7, SID_NAME_ALIAS, "AnonymousLogon"},
  65         {  8, SID_NAME_ALIAS, "Proxy"},
  66         {  9, SID_NAME_ALIAS, "ServerLogon"},
  67         { 11, SID_NAME_ALIAS, "Authenticated Users"},
  68         { 18, SID_NAME_ALIAS, "SYSTEM"},
  69         {  0, (enum SID_NAME_USE)0, NULL}};
  70
  71 static const known_sid_users builtin_groups[] = {
  72         { BUILTIN_ALIAS_RID_ADMINS, SID_NAME_ALIAS, "Administrators" },
  73         { BUILTIN_ALIAS_RID_USERS, SID_NAME_ALIAS, "Users" },
  74         { BUILTIN_ALIAS_RID_GUESTS, SID_NAME_ALIAS, "Guests" },
  75         { BUILTIN_ALIAS_RID_ACCOUNT_OPS, SID_NAME_ALIAS, "Account Operators" },
  76         { BUILTIN_ALIAS_RID_SYSTEM_OPS, SID_NAME_ALIAS, "Server Operators" },
  77         { BUILTIN_ALIAS_RID_PRINT_OPS, SID_NAME_ALIAS, "Print Operators" },
  78         { BUILTIN_ALIAS_RID_BACKUP_OPS, SID_NAME_ALIAS, "Backup Operators" },
  79         {  0, (enum SID_NAME_USE)0, NULL}};
  80
  81 /**************************************************************************
  82  Quick init function.
  83 *************************************************************************/
  84
  85 static void init_sid_name_map (void)
  86 {
  87         int i = 0;
  88
  89         if (sid_name_map_initialized) return;
  90
  91         generate_wellknown_sids();
  92
  93         if ((lp_security() == SEC_USER) && lp_domain_logons()) {
  94                 sid_name_map[i].sid = get_global_sam_sid();
  95                 /* This is not lp_workgroup() for good reason:
  96                    it must stay around longer than the lp_*()
  97                    strings do */
  98                 sid_name_map[i].name = strdup(lp_workgroup());
  99                 sid_name_map[i].known_users = NULL;
 100                 i++;
 101                 sid_name_map[i].sid = get_global_sam_sid();
 102                 sid_name_map[i].name = strdup(global_myname());
 103                 sid_name_map[i].known_users = NULL;
 104                 i++;
 105         } else {
 106                 sid_name_map[i].sid = get_global_sam_sid();
 107                 sid_name_map[i].name = strdup(global_myname());
 108                 sid_name_map[i].known_users = NULL;
 109                 i++;
 110         }
 111
 112         sid_name_map[i].sid = &global_sid_Builtin;
 113         sid_name_map[i].name = "BUILTIN";
 114         sid_name_map[i].known_users = &builtin_groups[0];
 115         i++;
 116
 117         sid_name_map[i].sid = &global_sid_World_Domain;
 118         sid_name_map[i].name = "";
 119         sid_name_map[i].known_users = &everyone_users[0];
 120         i++;
 121
 122         sid_name_map[i].sid = &global_sid_Creator_Owner_Domain;
 123         sid_name_map[i].name = "";
 124         sid_name_map[i].known_users = &creator_owner_users[0];
 125         i++;
 126
 127         sid_name_map[i].sid = &global_sid_NT_Authority;
 128         sid_name_map[i].name = "NT Authority";
 129         sid_name_map[i].known_users = &nt_authority_users[0];
 130         i++;
 131
 132         /* End of array. */
 133         sid_name_map[i].sid = NULL;
 134         sid_name_map[i].name = NULL;
 135         sid_name_map[i].known_users = NULL;
 136
 137         sid_name_map_initialized = True;
 138
 139         return;
 140 }
 141
 142 /**************************************************************************
 143  Turns a domain SID into a name, returned in the nt_domain argument.
 144 ***************************************************************************/
 145
 146 BOOL map_domain_sid_to_name(DOM_SID *sid, fstring nt_domain)
 147 {
 148         fstring sid_str;
 149         int i = 0;
 150
 151         sid_to_string(sid_str, sid);
 152
 153         if (!sid_name_map_initialized)
 154                 init_sid_name_map();
 155
 156         DEBUG(5,("map_domain_sid_to_name: %s\n", sid_str));
 157
 158         if (nt_domain == NULL)
 159                 return False;
 160
 161         while (sid_name_map[i].sid != NULL) {
 162                 sid_to_string(sid_str, sid_name_map[i].sid);
 163                 DEBUG(5,("map_domain_sid_to_name: compare: %s\n", sid_str));
 164                 if (sid_equal(sid_name_map[i].sid, sid)) {
 165                         fstrcpy(nt_domain, sid_name_map[i].name);
 166                         DEBUG(5,("map_domain_sid_to_name: found '%s'\n", nt_domain));
 167                         return True;
 168                 }
 169                 i++;
 170         }
 171
 172         DEBUG(5,("map_domain_sid_to_name: mapping for %s not found\n", sid_str));
 173
 174     return False;
 175 }
 176
 177 /**************************************************************************
 178  Looks up a known username from one of the known domains.
 179 ***************************************************************************/
 180
 181 BOOL lookup_known_rid(DOM_SID *sid, uint32 rid, char *name, enum SID_NAME_USE *psid_name_use)
 182 {
 183         int i = 0;
 184         struct sid_name_map_info *psnm;
 185
 186         if (!sid_name_map_initialized)
 187                 init_sid_name_map();
 188
 189         for(i = 0; sid_name_map[i].sid != NULL; i++) {
 190                 psnm = &sid_name_map[i];
 191                 if(sid_equal(psnm->sid, sid)) {
 192                         int j;
 193                         for(j = 0; psnm->known_users && psnm->known_users[j].known_user_name != NULL; j++) {
 194                                 if(rid == psnm->known_users[j].rid) {
 195                                         DEBUG(5,("lookup_builtin_rid: rid = %u, domain = '%s', user = '%s'\n",
 196                                                 (unsigned int)rid, psnm->name, psnm->known_users[j].known_user_name ));
 197                                         fstrcpy( name, psnm->known_users[j].known_user_name);
 198                                         *psid_name_use = psnm->known_users[j].sid_name_use;
 199                                         return True;
 200                                 }
 201                         }
 202                 }
 203         }
 204
 205         return False;
 206 }
 207
 208 /**************************************************************************
 209  Turns a domain name into a SID.
 210  *** side-effect: if the domain name is NULL, it is set to our domain ***
 211 ***************************************************************************/
 212
 213 BOOL map_domain_name_to_sid(DOM_SID *sid, char *nt_domain)
 214 {
 215         int i = 0;
 216
 217         if (nt_domain == NULL) {
 218                 DEBUG(5,("map_domain_name_to_sid: mapping NULL domain to our SID.\n"));
 219                 sid_copy(sid, get_global_sam_sid());
 220                 return True;
 221         }
 222
 223         if (nt_domain[0] == 0) {
 224                 fstrcpy(nt_domain, global_myname());
 225                 DEBUG(5,("map_domain_name_to_sid: overriding blank name to %s\n", nt_domain));
 226                 sid_copy(sid, get_global_sam_sid());
 227                 return True;
 228         }
 229
 230         DEBUG(5,("map_domain_name_to_sid: %s\n", nt_domain));
 231
 232         if (!sid_name_map_initialized)
 233                 init_sid_name_map();
 234
 235         while (sid_name_map[i].name != NULL) {
 236                 DEBUG(5,("map_domain_name_to_sid: compare: %s\n", sid_name_map[i].name));
 237                 if (strequal(sid_name_map[i].name, nt_domain)) {
 238                         fstring sid_str;
 239                         sid_copy(sid, sid_name_map[i].sid);
 240                         sid_to_string(sid_str, sid_name_map[i].sid);
 241                         DEBUG(5,("map_domain_name_to_sid: found %s\n", sid_str));
 242                         return True;
 243                 }
 244                 i++;
 245         }
 246
 247         DEBUG(0,("map_domain_name_to_sid: mapping to %s not found.\n", nt_domain));
 248         return False;
 249 }
 250
 251 /*****************************************************************
 252  Check if the SID is our domain SID (S-1-5-21-x-y-z).
 253 *****************************************************************/
 254
 255 BOOL sid_check_is_domain(const DOM_SID *sid)
 256 {
 257         return sid_equal(sid, get_global_sam_sid());
 258 }
 259
 260 /*****************************************************************
 261  Check if the SID is our domain SID (S-1-5-21-x-y-z).
 262 *****************************************************************/
 263
 264 BOOL sid_check_is_in_our_domain(const DOM_SID *sid)
 265 {
 266         DOM_SID dom_sid;
 267         uint32 rid;
 268
 269         sid_copy(&dom_sid, sid);
 270         sid_split_rid(&dom_sid, &rid);
 271
 272         return sid_equal(&dom_sid, get_global_sam_sid());
 273 }
 274
 275 /**************************************************************************
 276  Try and map a name to one of the well known SIDs.
 277 ***************************************************************************/
 278
 279 BOOL map_name_to_wellknown_sid(DOM_SID *sid, enum SID_NAME_USE *use, const char *name)
 280 {
 281         int i, j;
 282
 283         if (!sid_name_map_initialized)
 284                 init_sid_name_map();
 285
 286         for (i=0; sid_name_map[i].sid != NULL; i++) {
 287                 const known_sid_users *users = sid_name_map[i].known_users;
 288
 289                 if (users == NULL)
 290                         continue;
 291
 292                 for (j=0; users[j].known_user_name != NULL; j++) {
 293                         if (strequal(users[j].known_user_name, name) == 0) {
 294                                 sid_copy(sid, sid_name_map[i].sid);
 295                                 sid_append_rid(sid, users[j].rid);
 296                                 *use = users[j].sid_name_use;
 297                                 return True;
 298                         }
 299                 }
 300         }
 301
 302         return False;
 303 }