source3/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_WKN_GRP, "Dialup" },
  60         {  2, SID_NAME_WKN_GRP, "Network"},
  61         {  3, SID_NAME_WKN_GRP, "Batch"},
  62         {  4, SID_NAME_WKN_GRP, "Interactive"},
  63         {  6, SID_NAME_WKN_GRP, "Service"},
  64         {  7, SID_NAME_WKN_GRP, "AnonymousLogon"},
  65         {  8, SID_NAME_WKN_GRP, "Proxy"},
  66         {  9, SID_NAME_WKN_GRP, "ServerLogon"},
  67         { 10, SID_NAME_WKN_GRP, "Self"},
  68         { 11, SID_NAME_WKN_GRP, "Authenticated Users"},
  69         { 12, SID_NAME_WKN_GRP, "Restricted"},
  70         { 13, SID_NAME_WKN_GRP, "Terminal Server User"},
  71         { 14, SID_NAME_WKN_GRP, "Remote Interactive Logon"},
  72         { 15, SID_NAME_WKN_GRP, "This Organization"},
  73         { 18, SID_NAME_WKN_GRP, "SYSTEM"},
  74         { 19, SID_NAME_WKN_GRP, "Local Service"},
  75         { 20, SID_NAME_WKN_GRP, "Network Service"},
  76         {  0, (enum SID_NAME_USE)0, NULL}};
  77
  78 static const known_sid_users builtin_groups[] = {
  79         { BUILTIN_ALIAS_RID_ADMINS, SID_NAME_ALIAS, "Administrators" },
  80         { BUILTIN_ALIAS_RID_USERS, SID_NAME_ALIAS, "Users" },
  81         { BUILTIN_ALIAS_RID_GUESTS, SID_NAME_ALIAS, "Guests" },
  82         { BUILTIN_ALIAS_RID_POWER_USERS, SID_NAME_ALIAS, "Power Users" },
  83         { BUILTIN_ALIAS_RID_ACCOUNT_OPS, SID_NAME_ALIAS, "Account Operators" },
  84         { BUILTIN_ALIAS_RID_SYSTEM_OPS, SID_NAME_ALIAS, "Server Operators" },
  85         { BUILTIN_ALIAS_RID_PRINT_OPS, SID_NAME_ALIAS, "Print Operators" },
  86         { BUILTIN_ALIAS_RID_BACKUP_OPS, SID_NAME_ALIAS, "Backup Operators" },
  87         { BUILTIN_ALIAS_RID_REPLICATOR, SID_NAME_ALIAS, "Replicator" },
  88         { BUILTIN_ALIAS_RID_RAS_SERVERS, SID_NAME_ALIAS, "RAS Servers" },
  89         { BUILTIN_ALIAS_RID_PRE_2K_ACCESS, SID_NAME_ALIAS, "Pre-Windows 2000 Compatible Access" },
  90         {  0, (enum SID_NAME_USE)0, NULL}};
  91
  92 /**************************************************************************
  93  Quick init function.
  94 *************************************************************************/
  95
  96 static void init_sid_name_map (void)
  97 {
  98         int i = 0;
  99
 100         if (sid_name_map_initialized) return;
 101
 102         generate_wellknown_sids();
 103
 104         if ((lp_security() == SEC_USER) && lp_domain_logons()) {
 105                 sid_name_map[i].sid = get_global_sam_sid();
 106                 /* This is not lp_workgroup() for good reason:
 107                    it must stay around longer than the lp_*()
 108                    strings do */
 109                 sid_name_map[i].name = strdup(lp_workgroup());
 110                 sid_name_map[i].known_users = NULL;
 111                 i++;
 112                 sid_name_map[i].sid = get_global_sam_sid();
 113                 sid_name_map[i].name = strdup(global_myname());
 114                 sid_name_map[i].known_users = NULL;
 115                 i++;
 116         } else {
 117                 sid_name_map[i].sid = get_global_sam_sid();
 118                 sid_name_map[i].name = strdup(global_myname());
 119                 sid_name_map[i].known_users = NULL;
 120                 i++;
 121         }
 122
 123         sid_name_map[i].sid = &global_sid_Builtin;
 124         sid_name_map[i].name = "BUILTIN";
 125         sid_name_map[i].known_users = &builtin_groups[0];
 126         i++;
 127
 128         sid_name_map[i].sid = &global_sid_World_Domain;
 129         sid_name_map[i].name = "";
 130         sid_name_map[i].known_users = &everyone_users[0];
 131         i++;
 132
 133         sid_name_map[i].sid = &global_sid_Creator_Owner_Domain;
 134         sid_name_map[i].name = "";
 135         sid_name_map[i].known_users = &creator_owner_users[0];
 136         i++;
 137
 138         sid_name_map[i].sid = &global_sid_NT_Authority;
 139         sid_name_map[i].name = "NT Authority";
 140         sid_name_map[i].known_users = &nt_authority_users[0];
 141         i++;
 142
 143         /* End of array. */
 144         sid_name_map[i].sid = NULL;
 145         sid_name_map[i].name = NULL;
 146         sid_name_map[i].known_users = NULL;
 147
 148         sid_name_map_initialized = True;
 149
 150         return;
 151 }
 152
 153 /**************************************************************************
 154  Turns a domain SID into a name, returned in the nt_domain argument.
 155 ***************************************************************************/
 156
 157 BOOL map_domain_sid_to_name(DOM_SID *sid, fstring nt_domain)
 158 {
 159         fstring sid_str;
 160         int i = 0;
 161
 162         sid_to_string(sid_str, sid);
 163
 164         if (!sid_name_map_initialized)
 165                 init_sid_name_map();
 166
 167         DEBUG(5,("map_domain_sid_to_name: %s\n", sid_str));
 168
 169         if (nt_domain == NULL)
 170                 return False;
 171
 172         while (sid_name_map[i].sid != NULL) {
 173                 sid_to_string(sid_str, sid_name_map[i].sid);
 174                 DEBUG(5,("map_domain_sid_to_name: compare: %s\n", sid_str));
 175                 if (sid_equal(sid_name_map[i].sid, sid)) {
 176                         fstrcpy(nt_domain, sid_name_map[i].name);
 177                         DEBUG(5,("map_domain_sid_to_name: found '%s'\n", nt_domain));
 178                         return True;
 179                 }
 180                 i++;
 181         }
 182
 183         DEBUG(5,("map_domain_sid_to_name: mapping for %s not found\n", sid_str));
 184
 185     return False;
 186 }
 187
 188 /**************************************************************************
 189  Looks up a known username from one of the known domains.
 190 ***************************************************************************/
 191
 192 BOOL lookup_known_rid(DOM_SID *sid, uint32 rid, char *name, enum SID_NAME_USE *psid_name_use)
 193 {
 194         int i = 0;
 195         struct sid_name_map_info *psnm;
 196
 197         if (!sid_name_map_initialized)
 198                 init_sid_name_map();
 199
 200         for(i = 0; sid_name_map[i].sid != NULL; i++) {
 201                 psnm = &sid_name_map[i];
 202                 if(sid_equal(psnm->sid, sid)) {
 203                         int j;
 204                         for(j = 0; psnm->known_users && psnm->known_users[j].known_user_name != NULL; j++) {
 205                                 if(rid == psnm->known_users[j].rid) {
 206                                         DEBUG(5,("lookup_builtin_rid: rid = %u, domain = '%s', user = '%s'\n",
 207                                                 (unsigned int)rid, psnm->name, psnm->known_users[j].known_user_name ));
 208                                         fstrcpy( name, psnm->known_users[j].known_user_name);
 209                                         *psid_name_use = psnm->known_users[j].sid_name_use;
 210                                         return True;
 211                                 }
 212                         }
 213                 }
 214         }
 215
 216         return False;
 217 }
 218
 219 /**************************************************************************
 220  Turns a domain name into a SID.
 221  *** side-effect: if the domain name is NULL, it is set to our domain ***
 222 ***************************************************************************/
 223
 224 BOOL map_domain_name_to_sid(DOM_SID *sid, char *nt_domain)
 225 {
 226         int i = 0;
 227
 228         if (nt_domain == NULL) {
 229                 DEBUG(5,("map_domain_name_to_sid: mapping NULL domain to our SID.\n"));
 230                 sid_copy(sid, get_global_sam_sid());
 231                 return True;
 232         }
 233
 234         if (nt_domain[0] == 0) {
 235                 fstrcpy(nt_domain, global_myname());
 236                 DEBUG(5,("map_domain_name_to_sid: overriding blank name to %s\n", nt_domain));
 237                 sid_copy(sid, get_global_sam_sid());
 238                 return True;
 239         }
 240
 241         DEBUG(5,("map_domain_name_to_sid: %s\n", nt_domain));
 242
 243         if (!sid_name_map_initialized)
 244                 init_sid_name_map();
 245
 246         while (sid_name_map[i].name != NULL) {
 247                 DEBUG(5,("map_domain_name_to_sid: compare: %s\n", sid_name_map[i].name));
 248                 if (strequal(sid_name_map[i].name, nt_domain)) {
 249                         fstring sid_str;
 250                         sid_copy(sid, sid_name_map[i].sid);
 251                         sid_to_string(sid_str, sid_name_map[i].sid);
 252                         DEBUG(5,("map_domain_name_to_sid: found %s\n", sid_str));
 253                         return True;
 254                 }
 255                 i++;
 256         }
 257
 258         DEBUG(0,("map_domain_name_to_sid: mapping to %s not found.\n", nt_domain));
 259         return False;
 260 }
 261
 262 /*****************************************************************
 263  Check if the SID is our domain SID (S-1-5-21-x-y-z).
 264 *****************************************************************/
 265
 266 BOOL sid_check_is_domain(const DOM_SID *sid)
 267 {
 268         return sid_equal(sid, get_global_sam_sid());
 269 }
 270
 271 /*****************************************************************
 272  Check if the SID is our domain SID (S-1-5-21-x-y-z).
 273 *****************************************************************/
 274
 275 BOOL sid_check_is_in_our_domain(const DOM_SID *sid)
 276 {
 277         DOM_SID dom_sid;
 278         uint32 rid;
 279
 280         sid_copy(&dom_sid, sid);
 281         sid_split_rid(&dom_sid, &rid);
 282
 283         return sid_equal(&dom_sid, get_global_sam_sid());
 284 }
 285
 286 /**************************************************************************
 287  Try and map a name to one of the well known SIDs.
 288 ***************************************************************************/
 289
 290 BOOL map_name_to_wellknown_sid(DOM_SID *sid, enum SID_NAME_USE *use, const char *name)
 291 {
 292         int i, j;
 293
 294         if (!sid_name_map_initialized)
 295                 init_sid_name_map();
 296
 297         DEBUG(10,("map_name_to_wellknown_sid: looking up %s\n", name));
 298
 299         for (i=0; sid_name_map[i].sid != NULL; i++) {
 300                 const known_sid_users *users = sid_name_map[i].known_users;
 301
 302                 if (users == NULL)
 303                         continue;
 304
 305                 for (j=0; users[j].known_user_name != NULL; j++) {
 306                         if ( strequal(users[j].known_user_name, name) ) {
 307                                 sid_copy(sid, sid_name_map[i].sid);
 308                                 sid_append_rid(sid, users[j].rid);
 309                                 *use = users[j].sid_name_use;
 310                                 return True;
 311                         }
 312                 }
 313         }
 314
 315         return False;
 316 }
 317
 318 void add_sid_to_array(const DOM_SID *sid, DOM_SID **sids, int *num)
 319 {
 320         *sids = Realloc(*sids, ((*num)+1) * sizeof(DOM_SID));
 321
 322         if (*sids == NULL)
 323                 return;
 324
 325         sid_copy(&((*sids)[*num]), sid);
 326         *num += 1;
 327
 328         return;
 329 }