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_winbind_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 gid
=pdb_get_gid(sam_pass
);
135 /* on some systems this must run as root */
136 num_groups
= getgroups_user(user_name
, &groups
);
138 if (num_groups
== -1) {
139 /* this should never happen */
140 DEBUG(2,("get_alias_user_groups: getgroups_user failed\n"));
141 pdb_free_sam(&sam_pass
);
142 return NT_STATUS_UNSUCCESSFUL
;
145 for (i
=0;i
<num_groups
;i
++) {
146 if(!get_group_from_gid(groups
[i
], &map
, MAPPING_WITHOUT_PRIV
)) {
147 DEBUG(10,("get_alias_user_groups: gid %d. not found\n", (int)groups
[i
]));
151 /* if it's not an alias, continue */
152 if (map
.sid_name_use
!=SID_NAME_ALIAS
) {
153 DEBUG(10,("get_alias_user_groups: not returing %s, not an ALIAS group.\n", map
.nt_name
));
157 sid_copy(&tmp_sid
, &map
.sid
);
158 sid_split_rid(&tmp_sid
, &rid
);
160 /* if the sid is not in the correct domain, continue */
161 if (!sid_equal(&tmp_sid
, sid
)) {
162 DEBUG(10,("get_alias_user_groups: not returing %s, not in the domain SID.\n", map
.nt_name
));
166 /* Don't return winbind groups as they are not local! */
167 if (winbind_groups_exist
&& (groups
[i
] >= winbind_gid_low
) && (groups
[i
] <= winbind_gid_high
)) {
168 DEBUG(10,("get_alias_user_groups: not returing %s, not local.\n", map
.nt_name
));
172 /* Don't return user private groups... */
173 if (Get_Pwnam(map
.nt_name
) != 0) {
174 DEBUG(10,("get_alias_user_groups: not returing %s, clashes with user.\n", map
.nt_name
));
178 new_rids
=(uint32
*)Realloc(rids
, sizeof(uint32
)*(cur_rid
+1));
179 if (new_rids
==NULL
) {
180 DEBUG(10,("get_alias_user_groups: could not realloc memory\n"));
181 pdb_free_sam(&sam_pass
);
183 return NT_STATUS_NO_MEMORY
;
187 sid_peek_rid(&map
.sid
, &(rids
[cur_rid
]));
194 /* now check for the user's gid (the primary group rid) */
195 for (i
=0; i
<cur_rid
&& grid
!=rids
[i
]; i
++)
198 /* the user's gid is already there */
200 DEBUG(10,("get_alias_user_groups: user is already in the list. good.\n"));
204 DEBUG(10,("get_alias_user_groups: looking for gid %d of user %s\n", (int)gid
, user_name
));
206 if(!get_group_from_gid(gid
, &map
, MAPPING_WITHOUT_PRIV
)) {
207 DEBUG(0,("get_alias_user_groups: gid of user %s doesn't exist. Check your /etc/passwd and /etc/group files\n", user_name
));
211 /* the primary group isn't an alias */
212 if (map
.sid_name_use
!=SID_NAME_ALIAS
) {
213 DEBUG(10,("get_alias_user_groups: not returing %s, not an ALIAS group.\n", map
.nt_name
));
217 sid_copy(&tmp_sid
, &map
.sid
);
218 sid_split_rid(&tmp_sid
, &rid
);
220 /* if the sid is not in the correct domain, continue */
221 if (!sid_equal(&tmp_sid
, sid
)) {
222 DEBUG(10,("get_alias_user_groups: not returing %s, not in the domain SID.\n", map
.nt_name
));
226 /* Don't return winbind groups as they are not local! */
227 if (winbind_groups_exist
&& (gid
>= winbind_gid_low
) && (gid
<= winbind_gid_high
)) {
228 DEBUG(10,("get_alias_user_groups: not returing %s, not local.\n", map
.nt_name
));
232 /* Don't return user private groups... */
233 if (Get_Pwnam(map
.nt_name
) != 0) {
234 DEBUG(10,("get_alias_user_groups: not returing %s, clashes with user.\n", map
.nt_name
));
238 new_rids
=(uint32
*)Realloc(rids
, sizeof(uint32
)*(cur_rid
+1));
239 if (new_rids
==NULL
) {
240 DEBUG(10,("get_alias_user_groups: could not realloc memory\n"));
241 pdb_free_sam(&sam_pass
);
242 return NT_STATUS_NO_MEMORY
;
246 sid_peek_rid(&map
.sid
, &(rids
[cur_rid
]));
252 pdb_free_sam(&sam_pass
);
258 /*******************************************************************
259 gets a domain user's groups
260 ********************************************************************/
261 BOOL
get_domain_user_groups(TALLOC_CTX
*ctx
, int *numgroups
, DOM_GID
**pgids
, SAM_ACCOUNT
*sam_pass
)
264 int i
, num
, num_entries
, cur_gid
=0;
273 fstrcpy(user_name
, pdb_get_username(sam_pass
));
274 grid
=pdb_get_group_rid(sam_pass
);
276 DEBUG(10,("get_domain_user_groups: searching domain groups [%s] is a member of\n", user_name
));
278 /* first get the list of the domain groups */
279 if (!enum_group_mapping(SID_NAME_DOM_GRP
, &map
, &num_entries
, ENUM_ONLY_MAPPED
, MAPPING_WITHOUT_PRIV
))
281 DEBUG(10,("get_domain_user_groups: there are %d mapped groups\n", num_entries
));
284 * alloc memory. In the worse case, we alloc memory for nothing.
285 * but I prefer to alloc for nothing
286 * than reallocing everytime.
288 gids
= (DOM_GID
*)talloc(ctx
, sizeof(DOM_GID
) * num_entries
);
290 /* for each group, check if the user is a member of*/
291 for(i
=0; i
<num_entries
; i
++) {
292 if ((grp
=getgrgid(map
[i
].gid
)) == NULL
) {
294 DEBUG(5,("get_domain_user_groups: gid %d doesn't exist anymore !\n", (int)map
[i
].gid
));
298 for(num
=0; grp
->gr_mem
[num
]!=NULL
; num
++) {
299 if(strcmp(grp
->gr_mem
[num
], user_name
)==0) {
300 /* we found the user, add the group to the list */
301 sid_peek_rid(&map
[i
].sid
, &(gids
[cur_gid
].g_rid
));
302 gids
[cur_gid
].attr
=7;
303 DEBUG(10,("get_domain_user_groups: user found in group %s\n", map
[i
].nt_name
));
310 /* we have checked the groups */
311 /* we must now check the gid of the user or the primary group rid, that's the same */
312 for (i
=0; i
<cur_gid
&& grid
!=gids
[i
].g_rid
; i
++)
315 /* the user's gid is already there */
318 * the primary group of the user but be the first one in the list
321 gids
[i
].g_rid
=gids
[0].g_rid
;
326 for(i
=0; i
<num_entries
; i
++) {
327 sid_peek_rid(&map
[i
].sid
, &tmp_rid
);
330 * the primary group of the user but be the first one in the list
333 gids
[cur_gid
].g_rid
=gids
[0].g_rid
;
334 gids
[0].g_rid
=tmp_rid
;
335 gids
[cur_gid
].attr
=7;
336 DEBUG(10,("get_domain_user_groups: primary gid of user found in group %s\n", map
[i
].nt_name
));
338 goto done
; /* leave the loop early */
342 DEBUG(0,("get_domain_user_groups: primary gid of user [%s] is not a Domain group !\n", user_name
));
343 DEBUGADD(0,("get_domain_user_groups: You should fix it, NT doesn't like that\n"));
353 /*******************************************************************
354 Look up a local (domain) rid and return a name and type.
355 ********************************************************************/
356 NTSTATUS
local_lookup_group_name(uint32 rid
, char *group_name
, uint32
*type
)
359 (*type
) = SID_NAME_DOM_GRP
;
361 DEBUG(5,("lookup_group_name: rid: %d", rid
));
363 while (domain_group_rids
[i
].rid
!= rid
&& domain_group_rids
[i
].rid
!= 0)
368 if (domain_group_rids
[i
].rid
!= 0)
370 fstrcpy(group_name
, domain_group_rids
[i
].name
);
371 DEBUG(5,(" = %s\n", group_name
));
375 DEBUG(5,(" none mapped\n"));
376 return NT_STATUS_NONE_MAPPED
;
379 /*******************************************************************
380 Look up a local alias rid and return a name and type.
381 ********************************************************************/
382 NTSTATUS
local_lookup_alias_name(uint32 rid
, char *alias_name
, uint32
*type
)
385 (*type
) = SID_NAME_WKN_GRP
;
387 DEBUG(5,("lookup_alias_name: rid: %d", rid
));
389 while (builtin_alias_rids
[i
].rid
!= rid
&& builtin_alias_rids
[i
].rid
!= 0)
394 if (builtin_alias_rids
[i
].rid
!= 0)
396 fstrcpy(alias_name
, builtin_alias_rids
[i
].name
);
397 DEBUG(5,(" = %s\n", alias_name
));
401 DEBUG(5,(" none mapped\n"));
402 return NT_STATUS_NONE_MAPPED
;
406 #if 0 /*Nobody uses this function just now*/
407 /*******************************************************************
408 Look up a local user rid and return a name and type.
409 ********************************************************************/
410 NTSTATUS
local_lookup_user_name(uint32 rid
, char *user_name
, uint32
*type
)
412 SAM_ACCOUNT
*sampwd
=NULL
;
416 (*type
) = SID_NAME_USER
;
418 DEBUG(5,("lookup_user_name: rid: %d", rid
));
420 /* look up the well-known domain user rids first */
421 while (domain_user_rids
[i
].rid
!= rid
&& domain_user_rids
[i
].rid
!= 0)
426 if (domain_user_rids
[i
].rid
!= 0) {
427 fstrcpy(user_name
, domain_user_rids
[i
].name
);
428 DEBUG(5,(" = %s\n", user_name
));
432 pdb_init_sam(&sampwd
);
434 /* ok, it's a user. find the user account */
436 ret
= pdb_getsampwrid(sampwd
, rid
);
440 fstrcpy(user_name
, pdb_get_username(sampwd
) );
441 DEBUG(5,(" = %s\n", user_name
));
442 pdb_free_sam(&sampwd
);
446 DEBUG(5,(" none mapped\n"));
447 pdb_free_sam(&sampwd
);
448 return NT_STATUS_NONE_MAPPED
;
453 /*******************************************************************
454 Look up a local (domain) group name and return a rid
455 ********************************************************************/
456 NTSTATUS
local_lookup_group_rid(char *group_name
, uint32
*rid
)
459 int i
= -1; /* start do loop at -1 */
461 do /* find, if it exists, a group rid for the group name*/
464 (*rid
) = domain_group_rids
[i
].rid
;
465 grp_name
= domain_group_rids
[i
].name
;
467 } while (grp_name
!= NULL
&& !strequal(grp_name
, group_name
));
469 return (grp_name
!= NULL
) ? NT_STATUS_OK
: NT_STATUS_NONE_MAPPED
;
472 /*******************************************************************
473 Look up a local (BUILTIN) alias name and return a rid
474 ********************************************************************/
475 NTSTATUS
local_lookup_alias_rid(char *alias_name
, uint32
*rid
)
478 int i
= -1; /* start do loop at -1 */
480 do /* find, if it exists, a alias rid for the alias name*/
483 (*rid
) = builtin_alias_rids
[i
].rid
;
484 als_name
= builtin_alias_rids
[i
].name
;
486 } while (als_name
!= NULL
&& !strequal(als_name
, alias_name
));
488 return (als_name
!= NULL
) ? NT_STATUS_OK
: NT_STATUS_NONE_MAPPED
;
491 /*******************************************************************
492 Look up a local user name and return a rid
493 ********************************************************************/
494 NTSTATUS
local_lookup_user_rid(char *user_name
, uint32
*rid
)
496 SAM_ACCOUNT
*sampass
=NULL
;
501 pdb_init_sam(&sampass
);
503 /* find the user account */
505 ret
= pdb_getsampwnam(sampass
, user_name
);
509 (*rid
) = pdb_get_user_rid(sampass
);
510 pdb_free_sam(&sampass
);
514 pdb_free_sam(&sampass
);
515 return NT_STATUS_NONE_MAPPED
;