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 extern pstring global_myname;
  26 extern fstring global_myworkgroup;
  27
  28 #define MAX_SID_NAMES   7
  29
  30 typedef struct _known_sid_users {
  31         uint32 rid;
  32         enum SID_NAME_USE sid_name_use;
  33         char *known_user_name;
  34 } known_sid_users;
  35
  36 static struct sid_name_map_info
  37 {
  38         DOM_SID *sid;
  39         char *name;
  40         known_sid_users *known_users;
  41 } sid_name_map[MAX_SID_NAMES];
  42
  43 extern DOM_SID global_sid_Builtin;                              /* Local well-known domain */
  44 extern DOM_SID global_sid_World_Domain;         /* Everyone domain */
  45 extern DOM_SID global_sid_Creator_Owner_Domain;    /* Creator Owner domain */
  46 extern DOM_SID global_sid_NT_Authority;                 /* NT Authority */
  47
  48
  49 static BOOL sid_name_map_initialized = False;
  50 /* static known_sid_users no_users[] = {{0, 0, NULL}}; */
  51
  52 static known_sid_users everyone_users[] = {
  53         { 0, SID_NAME_WKN_GRP, "Everyone" },
  54         {0, (enum SID_NAME_USE)0, NULL}};
  55
  56 static known_sid_users creator_owner_users[] = {
  57         { 0, SID_NAME_WKN_GRP, "Creator Owner" },
  58         { 1, SID_NAME_WKN_GRP, "Creator Group" },
  59         {0, (enum SID_NAME_USE)0, NULL}};
  60
  61 static known_sid_users nt_authority_users[] = {
  62         {  1, SID_NAME_ALIAS, "Dialup" },
  63         {  2, SID_NAME_ALIAS, "Network"},
  64         {  3, SID_NAME_ALIAS, "Batch"},
  65         {  4, SID_NAME_ALIAS, "Interactive"},
  66         {  6, SID_NAME_ALIAS, "Service"},
  67         {  7, SID_NAME_ALIAS, "AnonymousLogon"},
  68         {  8, SID_NAME_ALIAS, "Proxy"},
  69         {  9, SID_NAME_ALIAS, "ServerLogon"},
  70         { 11, SID_NAME_ALIAS, "Authenticated Users"},
  71         { 18, SID_NAME_ALIAS, "SYSTEM"},
  72         {  0, (enum SID_NAME_USE)0, NULL}};
  73
  74 static known_sid_users builtin_groups[] = {
  75         { BUILTIN_ALIAS_RID_ADMINS, SID_NAME_ALIAS, "Administrators" },
  76         { BUILTIN_ALIAS_RID_USERS, SID_NAME_ALIAS, "Users" },
  77         { BUILTIN_ALIAS_RID_GUESTS, SID_NAME_ALIAS, "Guests" },
  78         { BUILTIN_ALIAS_RID_ACCOUNT_OPS, SID_NAME_ALIAS, "Account Operators" },
  79         { BUILTIN_ALIAS_RID_SYSTEM_OPS, SID_NAME_ALIAS, "Server Operators" },
  80         { BUILTIN_ALIAS_RID_PRINT_OPS, SID_NAME_ALIAS, "Print Operators" },
  81         { BUILTIN_ALIAS_RID_BACKUP_OPS, SID_NAME_ALIAS, "Backup Operators" },
  82         {  0, (enum SID_NAME_USE)0, NULL}};
  83
  84 /**************************************************************************
  85  Quick init function.
  86 *************************************************************************/
  87
  88 static void init_sid_name_map (void)
  89 {
  90         int i = 0;
  91
  92         if (sid_name_map_initialized) return;
  93
  94         generate_wellknown_sids();
  95
  96         if ((lp_security() == SEC_USER) && lp_domain_logons()) {
  97                 sid_name_map[i].sid = get_global_sam_sid();
  98                 /* This is not lp_workgroup() for good reason:
  99                    it must stay around longer than the lp_*()
 100                    strings do */
 101                 sid_name_map[i].name = global_myworkgroup;
 102                 sid_name_map[i].known_users = NULL;
 103                 i++;
 104                 sid_name_map[i].sid = get_global_sam_sid();
 105                 sid_name_map[i].name = global_myname;
 106                 sid_name_map[i].known_users = NULL;
 107                 i++;
 108         } else {
 109                 sid_name_map[i].sid = get_global_sam_sid();
 110                 sid_name_map[i].name = global_myname;
 111                 sid_name_map[i].known_users = NULL;
 112                 i++;
 113         }
 114
 115         sid_name_map[i].sid = &global_sid_Builtin;
 116         sid_name_map[i].name = "BUILTIN";
 117         sid_name_map[i].known_users = &builtin_groups[0];
 118         i++;
 119
 120         sid_name_map[i].sid = &global_sid_World_Domain;
 121         sid_name_map[i].name = "";
 122         sid_name_map[i].known_users = &everyone_users[0];
 123         i++;
 124
 125         sid_name_map[i].sid = &global_sid_Creator_Owner_Domain;
 126         sid_name_map[i].name = "";
 127         sid_name_map[i].known_users = &creator_owner_users[0];
 128         i++;
 129
 130         sid_name_map[i].sid = &global_sid_NT_Authority;
 131         sid_name_map[i].name = "NT Authority";
 132         sid_name_map[i].known_users = &nt_authority_users[0];
 133         i++;
 134
 135         /* End of array. */
 136         sid_name_map[i].sid = NULL;
 137         sid_name_map[i].name = NULL;
 138         sid_name_map[i].known_users = NULL;
 139
 140         sid_name_map_initialized = True;
 141
 142         return;
 143 }
 144
 145 /**************************************************************************
 146  Turns a domain SID into a name, returned in the nt_domain argument.
 147 ***************************************************************************/
 148
 149 BOOL map_domain_sid_to_name(DOM_SID *sid, fstring nt_domain)
 150 {
 151         fstring sid_str;
 152         int i = 0;
 153
 154         sid_to_string(sid_str, sid);
 155
 156         if (!sid_name_map_initialized)
 157                 init_sid_name_map();
 158
 159         DEBUG(5,("map_domain_sid_to_name: %s\n", sid_str));
 160
 161         if (nt_domain == NULL)
 162                 return False;
 163
 164         while (sid_name_map[i].sid != NULL) {
 165                 sid_to_string(sid_str, sid_name_map[i].sid);
 166                 DEBUG(5,("map_domain_sid_to_name: compare: %s\n", sid_str));
 167                 if (sid_equal(sid_name_map[i].sid, sid)) {
 168                         fstrcpy(nt_domain, sid_name_map[i].name);
 169                         DEBUG(5,("map_domain_sid_to_name: found '%s'\n", nt_domain));
 170                         return True;
 171                 }
 172                 i++;
 173         }
 174
 175         DEBUG(5,("map_domain_sid_to_name: mapping for %s not found\n", sid_str));
 176
 177     return False;
 178 }
 179
 180 /**************************************************************************
 181  Looks up a known username from one of the known domains.
 182 ***************************************************************************/
 183
 184 BOOL lookup_known_rid(DOM_SID *sid, uint32 rid, char *name, enum SID_NAME_USE *psid_name_use)
 185 {
 186         int i = 0;
 187         struct sid_name_map_info *psnm;
 188
 189         if (!sid_name_map_initialized)
 190                 init_sid_name_map();
 191
 192         for(i = 0; sid_name_map[i].sid != NULL; i++) {
 193                 psnm = &sid_name_map[i];
 194                 if(sid_equal(psnm->sid, sid)) {
 195                         int j;
 196                         for(j = 0; psnm->known_users && psnm->known_users[j].known_user_name != NULL; j++) {
 197                                 if(rid == psnm->known_users[j].rid) {
 198                                         DEBUG(5,("lookup_builtin_rid: rid = %u, domain = '%s', user = '%s'\n",
 199                                                 (unsigned int)rid, psnm->name, psnm->known_users[j].known_user_name ));
 200                                         fstrcpy( name, psnm->known_users[j].known_user_name);
 201                                         *psid_name_use = psnm->known_users[j].sid_name_use;
 202                                         return True;
 203                                 }
 204                         }
 205                 }
 206         }
 207
 208         return False;
 209 }
 210
 211 /**************************************************************************
 212  Turns a domain name into a SID.
 213  *** side-effect: if the domain name is NULL, it is set to our domain ***
 214 ***************************************************************************/
 215
 216 BOOL map_domain_name_to_sid(DOM_SID *sid, char *nt_domain)
 217 {
 218         int i = 0;
 219
 220         if (nt_domain == NULL) {
 221                 DEBUG(5,("map_domain_name_to_sid: mapping NULL domain to our SID.\n"));
 222                 sid_copy(sid, get_global_sam_sid());
 223                 return True;
 224         }
 225
 226         if (nt_domain[0] == 0) {
 227                 fstrcpy(nt_domain, global_myname);
 228                 DEBUG(5,("map_domain_name_to_sid: overriding blank name to %s\n", nt_domain));
 229                 sid_copy(sid, get_global_sam_sid());
 230                 return True;
 231         }
 232
 233         DEBUG(5,("map_domain_name_to_sid: %s\n", nt_domain));
 234
 235         if (!sid_name_map_initialized)
 236                 init_sid_name_map();
 237
 238         while (sid_name_map[i].name != NULL) {
 239                 DEBUG(5,("map_domain_name_to_sid: compare: %s\n", sid_name_map[i].name));
 240                 if (strequal(sid_name_map[i].name, nt_domain)) {
 241                         fstring sid_str;
 242                         sid_copy(sid, sid_name_map[i].sid);
 243                         sid_to_string(sid_str, sid_name_map[i].sid);
 244                         DEBUG(5,("map_domain_name_to_sid: found %s\n", sid_str));
 245                         return True;
 246                 }
 247                 i++;
 248         }
 249
 250         DEBUG(0,("map_domain_name_to_sid: mapping to %s not found.\n", nt_domain));
 251         return False;
 252 }
 253
 254 /*****************************************************************
 255  Check if the SID is our domain SID (S-1-5-21-x-y-z).
 256 *****************************************************************/
 257
 258 BOOL sid_check_is_domain(const DOM_SID *sid)
 259 {
 260         return sid_equal(sid, get_global_sam_sid());
 261 }
 262
 263 /*****************************************************************
 264  Check if the SID is our domain SID (S-1-5-21-x-y-z).
 265 *****************************************************************/
 266
 267 BOOL sid_check_is_in_our_domain(const DOM_SID *sid)
 268 {
 269         DOM_SID dom_sid;
 270         uint32 rid;
 271
 272         sid_copy(&dom_sid, sid);
 273         sid_split_rid(&dom_sid, &rid);
 274
 275         return sid_equal(&dom_sid, get_global_sam_sid());
 276 }
 277
 278 /**************************************************************************
 279  Try and map a name to one of the well known SIDs.
 280 ***************************************************************************/
 281
 282 BOOL map_name_to_wellknown_sid(DOM_SID *sid, enum SID_NAME_USE *use, const char *name)
 283 {
 284         int i, j;
 285
 286         if (!sid_name_map_initialized)
 287                 init_sid_name_map();
 288
 289         for (i=0; sid_name_map[i].sid != NULL; i++) {
 290                 known_sid_users *users = sid_name_map[i].known_users;
 291
 292                 if (users == NULL)
 293                         continue;
 294
 295                 for (j=0; users[j].known_user_name != NULL; j++) {
 296                         if (strequal(users[j].known_user_name, name) == 0) {
 297                                 sid_copy(sid, sid_name_map[i].sid);
 298                                 sid_append_rid(sid, users[j].rid);
 299                                 *use = users[j].sid_name_use;
 300                                 return True;
 301                         }
 302                 }
 303         }
 304
 305         return False;
 306 }