2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1998
5 * Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
6 * Copyright (C) Paul Ashton 1997-1998.
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.
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.
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.
23 /* this module apparently provides an implementation of DCE/RPC over a
24 * named pipe (IPC$ connection using SMBtrans). details of DCE/RPC
25 * documentation are available (in on-line form) from the X-Open group.
27 * this module should provide a level of abstraction between SMB
28 * and DCE/RPC, while minimising the amount of mallocs, unnecessary
29 * data copies, and network traffic.
31 * in this version, which takes a "let's learn what's going on and
32 * get something running" approach, there is additional network
33 * traffic generated, but the code should be easier to understand...
35 * ... if you read the docs. or stare at packets for weeks on end.
42 #define DBGC_CLASS DBGC_RPC_SRV
45 * A list of the rids of well known BUILTIN and Domain users
49 rid_name builtin_alias_rids[] =
51 { BUILTIN_ALIAS_RID_ADMINS , "Administrators" },
52 { BUILTIN_ALIAS_RID_USERS , "Users" },
53 { BUILTIN_ALIAS_RID_GUESTS , "Guests" },
54 { BUILTIN_ALIAS_RID_POWER_USERS , "Power Users" },
56 { BUILTIN_ALIAS_RID_ACCOUNT_OPS , "Account Operators" },
57 { BUILTIN_ALIAS_RID_SYSTEM_OPS , "System Operators" },
58 { BUILTIN_ALIAS_RID_PRINT_OPS , "Print Operators" },
59 { BUILTIN_ALIAS_RID_BACKUP_OPS , "Backup Operators" },
60 { BUILTIN_ALIAS_RID_REPLICATOR , "Replicator" },
64 /* array lookup of well-known Domain RID users. */
65 rid_name domain_user_rids[] =
67 { DOMAIN_USER_RID_ADMIN , "Administrator" },
68 { DOMAIN_USER_RID_GUEST , "Guest" },
72 /* array lookup of well-known Domain RID groups. */
73 rid_name domain_group_rids[] =
75 { DOMAIN_GROUP_RID_ADMINS , "Domain Admins" },
76 { DOMAIN_GROUP_RID_USERS , "Domain Users" },
77 { DOMAIN_GROUP_RID_GUESTS , "Domain Guests" },
81 /*******************************************************************
82 gets a domain user's groups
83 ********************************************************************/
84 NTSTATUS get_alias_user_groups(TALLOC_CTX *ctx, DOM_SID *sid, int *numgroups, uint32 **prids, DOM_SID *q_sid)
86 SAM_ACCOUNT *sam_pass=NULL;
94 fstring str_domsid, str_qsid;
96 uint32 *rids=NULL, *new_rids=NULL;
97 gid_t winbind_gid_low, winbind_gid_high;
99 BOOL winbind_groups_exist;
102 * this code is far from perfect.
103 * first it enumerates the full /etc/group and that can be slow.
104 * second, it works only with users' SIDs
105 * whereas the day we support nested groups, it will have to
106 * support both users's SIDs and domain groups' SIDs
108 * having our own ldap backend would be so much faster !
109 * we're far from that, but hope one day ;-) JFM.
115 winbind_groups_exist = lp_idmap_gid(&winbind_gid_low, &winbind_gid_high);
118 DEBUG(10,("get_alias_user_groups: looking if SID %s is a member of groups in the SID domain %s\n",
119 sid_to_string(str_qsid, q_sid), sid_to_string(str_domsid, sid)));
121 pdb_init_sam(&sam_pass);
123 ret = pdb_getsampwsid(sam_pass, q_sid);
126 pdb_free_sam(&sam_pass);
127 return NT_STATUS_NO_SUCH_USER;
130 fstrcpy(user_name, pdb_get_username(sam_pass));
131 grid=pdb_get_group_rid(sam_pass);
132 if (!NT_STATUS_IS_OK(sid_to_gid(pdb_get_group_sid(sam_pass), &gid))) {
133 /* this should never happen */
134 DEBUG(2,("get_alias_user_groups: sid_to_gid failed!\n"));
135 pdb_free_sam(&sam_pass);
136 return NT_STATUS_UNSUCCESSFUL;
140 /* on some systems this must run as root */
141 num_groups = getgroups_user(user_name, &groups);
143 if (num_groups == -1) {
144 /* this should never happen */
145 DEBUG(2,("get_alias_user_groups: getgroups_user failed\n"));
146 pdb_free_sam(&sam_pass);
147 return NT_STATUS_UNSUCCESSFUL;
152 for (i=0;i<num_groups;i++) {
154 if (!get_group_from_gid(groups[i], &map)) {
155 DEBUG(10,("get_alias_user_groups: gid %d. not found\n", (int)groups[i]));
159 /* if it's not an alias, continue */
160 if (map.sid_name_use != SID_NAME_ALIAS) {
161 DEBUG(10,("get_alias_user_groups: not returing %s, not an ALIAS group.\n", map.nt_name));
165 sid_copy(&tmp_sid, &map.sid);
166 sid_split_rid(&tmp_sid, &rid);
168 /* if the sid is not in the correct domain, continue */
169 if (!sid_equal(&tmp_sid, sid)) {
170 DEBUG(10,("get_alias_user_groups: not returing %s, not in the domain SID.\n", map.nt_name));
174 /* Don't return winbind groups as they are not local! */
175 if (winbind_groups_exist && (groups[i] >= winbind_gid_low) && (groups[i] <= winbind_gid_high)) {
176 DEBUG(10,("get_alias_user_groups: not returing %s, not local.\n", map.nt_name));
180 /* Don't return user private groups... */
181 if (Get_Pwnam(map.nt_name) != 0) {
182 DEBUG(10,("get_alias_user_groups: not returing %s, clashes with user.\n", map.nt_name));
186 new_rids=(uint32 *)Realloc(rids, sizeof(uint32)*(cur_rid+1));
187 if (new_rids==NULL) {
188 DEBUG(10,("get_alias_user_groups: could not realloc memory\n"));
189 pdb_free_sam(&sam_pass);
191 return NT_STATUS_NO_MEMORY;
195 sid_peek_rid(&map.sid, &(rids[cur_rid]));
202 if(num_groups) free(groups);
204 /* now check for the user's gid (the primary group rid) */
205 for (i=0; i<cur_rid && grid!=rids[i]; i++)
208 /* the user's gid is already there */
210 DEBUG(10,("get_alias_user_groups: user is already in the list. good.\n"));
214 DEBUG(10,("get_alias_user_groups: looking for gid %d of user %s\n", (int)gid, user_name));
218 if(!get_group_from_gid(gid, &map)) {
219 DEBUG(0,("get_alias_user_groups: gid of user %s doesn't exist. Check your /etc/passwd and /etc/group files\n", user_name));
225 /* the primary group isn't an alias */
226 if (map.sid_name_use!=SID_NAME_ALIAS) {
227 DEBUG(10,("get_alias_user_groups: not returing %s, not an ALIAS group.\n", map.nt_name));
231 sid_copy(&tmp_sid, &map.sid);
232 sid_split_rid(&tmp_sid, &rid);
234 /* if the sid is not in the correct domain, continue */
235 if (!sid_equal(&tmp_sid, sid)) {
236 DEBUG(10,("get_alias_user_groups: not returing %s, not in the domain SID.\n", map.nt_name));
240 /* Don't return winbind groups as they are not local! */
241 if (winbind_groups_exist && (gid >= winbind_gid_low) && (gid <= winbind_gid_high)) {
242 DEBUG(10,("get_alias_user_groups: not returing %s, not local.\n", map.nt_name ));
246 /* Don't return user private groups... */
247 if (Get_Pwnam(map.nt_name) != 0) {
248 DEBUG(10,("get_alias_user_groups: not returing %s, clashes with user.\n", map.nt_name ));
252 new_rids=(uint32 *)Realloc(rids, sizeof(uint32)*(cur_rid+1));
253 if (new_rids==NULL) {
254 DEBUG(10,("get_alias_user_groups: could not realloc memory\n"));
255 pdb_free_sam(&sam_pass);
256 return NT_STATUS_NO_MEMORY;
260 sid_peek_rid(&map.sid, &(rids[cur_rid]));
266 pdb_free_sam(&sam_pass);
272 /*******************************************************************
273 gets a domain user's groups
274 ********************************************************************/
275 BOOL get_domain_user_groups(TALLOC_CTX *ctx, int *numgroups, DOM_GID **pgids, SAM_ACCOUNT *sam_pass)
278 int i, num, num_entries, cur_gid=0;
287 fstrcpy(user_name, pdb_get_username(sam_pass));
288 grid=pdb_get_group_rid(sam_pass);
290 DEBUG(10,("get_domain_user_groups: searching domain groups [%s] is a member of\n", user_name));
292 /* we must wrap this is become/unbecome root for ldap backends */
295 /* first get the list of the domain groups */
296 if (!pdb_enum_group_mapping(SID_NAME_DOM_GRP, &map, &num_entries, ENUM_ONLY_MAPPED))
298 DEBUG(10,("get_domain_user_groups: there are %d mapped groups\n", num_entries));
301 /* end wrapper for group enumeration */
304 * alloc memory. In the worse case, we alloc memory for nothing.
305 * but I prefer to alloc for nothing
306 * than reallocing everytime.
308 gids = (DOM_GID *)talloc(ctx, sizeof(DOM_GID) * num_entries);
310 /* for each group, check if the user is a member of. Only include groups
313 for(i=0; i<num_entries; i++) {
315 if ( !sid_check_is_in_our_domain(&map[i].sid) ) {
316 DEBUG(10,("get_domain_user_groups: skipping check of %s since it is not in our domain\n",
321 if ((grp=getgrgid(map[i].gid)) == NULL) {
323 DEBUG(5,("get_domain_user_groups: gid %d doesn't exist anymore !\n", (int)map[i].gid));
327 for(num=0; grp->gr_mem[num]!=NULL; num++) {
328 if(strcmp(grp->gr_mem[num], user_name)==0) {
329 /* we found the user, add the group to the list */
330 sid_peek_rid(&map[i].sid, &(gids[cur_gid].g_rid));
331 gids[cur_gid].attr=7;
332 DEBUG(10,("get_domain_user_groups: user found in group %s\n", map[i].nt_name));
339 /* we have checked the groups */
340 /* we must now check the gid of the user or the primary group rid, that's the same */
341 for (i=0; i<cur_gid && grid!=gids[i].g_rid; i++)
344 /* the user's gid is already there */
347 * the primary group of the user but be the first one in the list
350 gids[i].g_rid=gids[0].g_rid;
355 for(i=0; i<num_entries; i++) {
356 sid_peek_rid(&map[i].sid, &tmp_rid);
359 * the primary group of the user but be the first one in the list
362 gids[cur_gid].g_rid=gids[0].g_rid;
363 gids[0].g_rid=tmp_rid;
364 gids[cur_gid].attr=7;
365 DEBUG(10,("get_domain_user_groups: primary gid of user found in group %s\n", map[i].nt_name));
367 goto done; /* leave the loop early */
371 DEBUG(0,("get_domain_user_groups: primary gid of user [%s] is not a Domain group !\n", user_name));
372 DEBUGADD(0,("get_domain_user_groups: You should fix it, NT doesn't like that\n"));
383 /*******************************************************************
384 gets a domain user's groups from their already-calculated NT_USER_TOKEN
385 ********************************************************************/
386 NTSTATUS nt_token_to_group_list(TALLOC_CTX *mem_ctx, const DOM_SID *domain_sid,
387 const NT_USER_TOKEN *nt_token,
388 int *numgroups, DOM_GID **pgids)
393 gids = (DOM_GID *)talloc(mem_ctx, sizeof(*gids) * nt_token->num_sids);
396 return NT_STATUS_NO_MEMORY;
401 for (i=PRIMARY_GROUP_SID_INDEX; i < nt_token->num_sids; i++) {
402 if (sid_compare_domain(domain_sid, &nt_token->user_sids[i])==0) {
403 sid_peek_rid(&nt_token->user_sids[i], &(gids[*numgroups].g_rid));
404 gids[*numgroups].attr=7;
412 /*******************************************************************
413 Look up a local (domain) rid and return a name and type.
414 ********************************************************************/
415 NTSTATUS local_lookup_group_name(uint32 rid, char *group_name, uint32 *type)
418 (*type) = SID_NAME_DOM_GRP;
420 DEBUG(5,("lookup_group_name: rid: %d", rid));
422 while (domain_group_rids[i].rid != rid && domain_group_rids[i].rid != 0)
427 if (domain_group_rids[i].rid != 0)
429 fstrcpy(group_name, domain_group_rids[i].name);
430 DEBUG(5,(" = %s\n", group_name));
434 DEBUG(5,(" none mapped\n"));
435 return NT_STATUS_NONE_MAPPED;
438 /*******************************************************************
439 Look up a local alias rid and return a name and type.
440 ********************************************************************/
441 NTSTATUS local_lookup_alias_name(uint32 rid, char *alias_name, uint32 *type)
444 (*type) = SID_NAME_WKN_GRP;
446 DEBUG(5,("lookup_alias_name: rid: %d", rid));
448 while (builtin_alias_rids[i].rid != rid && builtin_alias_rids[i].rid != 0)
453 if (builtin_alias_rids[i].rid != 0)
455 fstrcpy(alias_name, builtin_alias_rids[i].name);
456 DEBUG(5,(" = %s\n", alias_name));
460 DEBUG(5,(" none mapped\n"));
461 return NT_STATUS_NONE_MAPPED;
465 #if 0 /*Nobody uses this function just now*/
466 /*******************************************************************
467 Look up a local user rid and return a name and type.
468 ********************************************************************/
469 NTSTATUS local_lookup_user_name(uint32 rid, char *user_name, uint32 *type)
471 SAM_ACCOUNT *sampwd=NULL;
475 (*type) = SID_NAME_USER;
477 DEBUG(5,("lookup_user_name: rid: %d", rid));
479 /* look up the well-known domain user rids first */
480 while (domain_user_rids[i].rid != rid && domain_user_rids[i].rid != 0)
485 if (domain_user_rids[i].rid != 0) {
486 fstrcpy(user_name, domain_user_rids[i].name);
487 DEBUG(5,(" = %s\n", user_name));
491 pdb_init_sam(&sampwd);
493 /* ok, it's a user. find the user account */
495 ret = pdb_getsampwrid(sampwd, rid);
499 fstrcpy(user_name, pdb_get_username(sampwd) );
500 DEBUG(5,(" = %s\n", user_name));
501 pdb_free_sam(&sampwd);
505 DEBUG(5,(" none mapped\n"));
506 pdb_free_sam(&sampwd);
507 return NT_STATUS_NONE_MAPPED;
512 /*******************************************************************
513 Look up a local (domain) group name and return a rid
514 ********************************************************************/
515 NTSTATUS local_lookup_group_rid(char *group_name, uint32 *rid)
517 const char *grp_name;
518 int i = -1; /* start do loop at -1 */
520 do /* find, if it exists, a group rid for the group name*/
523 (*rid) = domain_group_rids[i].rid;
524 grp_name = domain_group_rids[i].name;
526 } while (grp_name != NULL && !strequal(grp_name, group_name));
528 return (grp_name != NULL) ? NT_STATUS_OK : NT_STATUS_NONE_MAPPED;
531 /*******************************************************************
532 Look up a local (BUILTIN) alias name and return a rid
533 ********************************************************************/
534 NTSTATUS local_lookup_alias_rid(const char *alias_name, uint32 *rid)
536 const char *als_name;
537 int i = -1; /* start do loop at -1 */
539 do /* find, if it exists, a alias rid for the alias name*/
542 (*rid) = builtin_alias_rids[i].rid;
543 als_name = builtin_alias_rids[i].name;
545 } while (als_name != NULL && !strequal(als_name, alias_name));
547 return (als_name != NULL) ? NT_STATUS_OK : NT_STATUS_NONE_MAPPED;
550 /*******************************************************************
551 Look up a local user name and return a rid
552 ********************************************************************/
553 NTSTATUS local_lookup_user_rid(char *user_name, uint32 *rid)
555 SAM_ACCOUNT *sampass=NULL;
560 pdb_init_sam(&sampass);
562 /* find the user account */
564 ret = pdb_getsampwnam(sampass, user_name);
568 (*rid) = pdb_get_user_rid(sampass);
569 pdb_free_sam(&sampass);
573 pdb_free_sam(&sampass);
574 return NT_STATUS_NONE_MAPPED;