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samba-mirror/source3/lib/domain_namemap.c
1999-12-13 19:17:40 +00:00

1318 lines
33 KiB
C

/*
Unix SMB/Netbios implementation.
Version 1.9.
Groupname handling
Copyright (C) Jeremy Allison 1998.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* UNIX gid and Local or Domain SID resolution. This module resolves
* only those entries in the map files, it is *NOT* responsible for
* resolving UNIX groups not listed: that is an entirely different
* matter, altogether...
*/
/*
*
*
format of the file is:
unixname NT Group name
unixname Domain Admins (well-known Domain Group)
unixname DOMAIN_NAME\NT Group name
unixname OTHER_DOMAIN_NAME\NT Group name
unixname DOMAIN_NAME\Domain Admins (well-known Domain Group)
....
if the DOMAIN_NAME\ component is left off, then your own domain is assumed.
*
*
*/
#include "includes.h"
extern int DEBUGLEVEL;
extern fstring global_myworkgroup;
extern DOM_SID global_member_sid;
extern fstring global_sam_name;
extern DOM_SID global_sam_sid;
extern DOM_SID global_sid_S_1_5_20;
/*******************************************************************
converts UNIX uid to an NT User RID. NOTE: IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uid_t pwdb_user_rid_to_uid(uint32 user_rid)
{
return ((user_rid & (~RID_TYPE_USER))- 1000)/RID_MULTIPLIER;
}
/*******************************************************************
converts NT Group RID to a UNIX uid. NOTE: IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uint32 pwdb_group_rid_to_gid(uint32 group_rid)
{
return ((group_rid & (~RID_TYPE_GROUP))- 1000)/RID_MULTIPLIER;
}
/*******************************************************************
converts NT Alias RID to a UNIX uid. NOTE: IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uint32 pwdb_alias_rid_to_gid(uint32 alias_rid)
{
return ((alias_rid & (~RID_TYPE_ALIAS))- 1000)/RID_MULTIPLIER;
}
/*******************************************************************
converts NT Group RID to a UNIX uid. NOTE: IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uint32 pwdb_gid_to_group_rid(uint32 gid)
{
uint32 grp_rid = ((((gid)*RID_MULTIPLIER) + 1000) | RID_TYPE_GROUP);
return grp_rid;
}
/******************************************************************
converts UNIX gid to an NT Alias RID. NOTE: IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uint32 pwdb_gid_to_alias_rid(uint32 gid)
{
uint32 alias_rid = ((((gid)*RID_MULTIPLIER) + 1000) | RID_TYPE_ALIAS);
return alias_rid;
}
/*******************************************************************
converts UNIX uid to an NT User RID. NOTE: IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uint32 pwdb_uid_to_user_rid(uint32 uid)
{
uint32 user_rid = ((((uid)*RID_MULTIPLIER) + 1000) | RID_TYPE_USER);
return user_rid;
}
/******************************************************************
converts SID + SID_NAME_USE type to a UNIX id. the Domain SID is,
and can only be, our own SID.
********************************************************************/
static BOOL pwdb_sam_sid_to_unixid(DOM_SID *sid, uint8 type, uint32 *id)
{
DOM_SID tmp_sid;
uint32 rid;
sid_copy(&tmp_sid, sid);
sid_split_rid(&tmp_sid, &rid);
if (!sid_equal(&global_sam_sid, &tmp_sid))
{
return False;
}
switch (type)
{
case SID_NAME_USER:
{
*id = pwdb_user_rid_to_uid(rid);
return True;
}
case SID_NAME_ALIAS:
{
*id = pwdb_alias_rid_to_gid(rid);
return True;
}
case SID_NAME_DOM_GRP:
case SID_NAME_WKN_GRP:
{
*id = pwdb_group_rid_to_gid(rid);
return True;
}
}
return False;
}
/******************************************************************
converts UNIX gid + SID_NAME_USE type to a SID. the Domain SID is,
and can only be, our own SID.
********************************************************************/
static BOOL pwdb_unixid_to_sam_sid(uint32 id, uint8 type, DOM_SID *sid)
{
sid_copy(sid, &global_sam_sid);
switch (type)
{
case SID_NAME_USER:
{
sid_append_rid(sid, pwdb_uid_to_user_rid(id));
return True;
}
case SID_NAME_ALIAS:
{
sid_append_rid(sid, pwdb_gid_to_alias_rid(id));
return True;
}
case SID_NAME_DOM_GRP:
case SID_NAME_WKN_GRP:
{
sid_append_rid(sid, pwdb_gid_to_group_rid(id));
return True;
}
}
return False;
}
/*******************************************************************
Decides if a RID is a well known RID.
********************************************************************/
static BOOL pwdb_rid_is_well_known(uint32 rid)
{
return (rid < 1000);
}
/*******************************************************************
determines a rid's type. NOTE: THIS IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
static uint32 pwdb_rid_type(uint32 rid)
{
/* lkcl i understand that NT attaches an enumeration to a RID
* such that it can be identified as either a user, group etc
* type: SID_ENUM_TYPE.
*/
if (pwdb_rid_is_well_known(rid))
{
/*
* The only well known user RIDs are DOMAIN_USER_RID_ADMIN
* and DOMAIN_USER_RID_GUEST.
*/
if (rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
{
return RID_TYPE_USER;
}
if (DOMAIN_GROUP_RID_ADMINS <= rid && rid <= DOMAIN_GROUP_RID_GUESTS)
{
return RID_TYPE_GROUP;
}
if (BUILTIN_ALIAS_RID_ADMINS <= rid && rid <= BUILTIN_ALIAS_RID_REPLICATOR)
{
return RID_TYPE_ALIAS;
}
}
return (rid & RID_TYPE_MASK);
}
/*******************************************************************
checks whether rid is a user rid. NOTE: THIS IS SOMETHING SPECIFIC TO SAMBA
********************************************************************/
BOOL pwdb_rid_is_user(uint32 rid)
{
return pwdb_rid_type(rid) == RID_TYPE_USER;
}
/**************************************************************************
Groupname map functionality. The code loads a groupname map file and
(currently) loads it into a linked list. This is slow and memory
hungry, but can be changed into a more efficient storage format
if the demands on it become excessive.
***************************************************************************/
typedef struct name_map
{
ubi_slNode next;
DOM_NAME_MAP grp;
} name_map_entry;
static ubi_slList groupname_map_list;
static ubi_slList aliasname_map_list;
static ubi_slList ntusrname_map_list;
static void delete_name_entry(name_map_entry *gmep)
{
if (gmep->grp.nt_name)
{
free(gmep->grp.nt_name);
}
if (gmep->grp.nt_domain)
{
free(gmep->grp.nt_domain);
}
if (gmep->grp.unix_name)
{
free(gmep->grp.unix_name);
}
free((char*)gmep);
}
/**************************************************************************
Delete all the entries in the name map list.
***************************************************************************/
static void delete_map_list(ubi_slList *map_list)
{
name_map_entry *gmep;
while ((gmep = (name_map_entry *)ubi_slRemHead(map_list )) != NULL)
{
delete_name_entry(gmep);
}
}
/**************************************************************************
makes a group sid out of a domain sid and a _unix_ gid.
***************************************************************************/
static BOOL make_mydomain_sid(DOM_NAME_MAP *grp, DOM_MAP_TYPE type)
{
int ret = False;
fstring sid_str;
if (!map_domain_name_to_sid(&grp->sid, &(grp->nt_domain)))
{
DEBUG(0,("make_mydomain_sid: unknown domain %s\n",
grp->nt_domain));
return False;
}
if (sid_equal(&grp->sid, &global_sid_S_1_5_20))
{
/*
* only builtin aliases are recognised in S-1-5-20
*/
DEBUG(10,("make_mydomain_sid: group %s in builtin domain\n",
grp->nt_name));
if (lookup_builtin_alias_name(grp->nt_name, "BUILTIN", &grp->sid, &grp->type) != 0x0)
{
DEBUG(0,("unix group %s mapped to an unrecognised BUILTIN domain name %s\n",
grp->unix_name, grp->nt_name));
return False;
}
ret = True;
}
else if (lookup_wk_user_name(grp->nt_name, grp->nt_domain, &grp->sid, &grp->type) == 0x0)
{
if (type != DOM_MAP_USER)
{
DEBUG(0,("well-known NT user %s\\%s listed in wrong map file\n",
grp->nt_domain, grp->nt_name));
return False;
}
ret = True;
}
else if (lookup_wk_group_name(grp->nt_name, grp->nt_domain, &grp->sid, &grp->type) == 0x0)
{
if (type != DOM_MAP_DOMAIN)
{
DEBUG(0,("well-known NT group %s\\%s listed in wrong map file\n",
grp->nt_domain, grp->nt_name));
return False;
}
ret = True;
}
else
{
switch (type)
{
case DOM_MAP_USER:
{
grp->type = SID_NAME_USER;
break;
}
case DOM_MAP_DOMAIN:
{
grp->type = SID_NAME_DOM_GRP;
break;
}
case DOM_MAP_LOCAL:
{
grp->type = SID_NAME_ALIAS;
break;
}
}
ret = pwdb_unixid_to_sam_sid(grp->unix_id, grp->type, &grp->sid);
}
sid_to_string(sid_str, &grp->sid);
DEBUG(10,("nt name %s\\%s gid %d mapped to %s\n",
grp->nt_domain, grp->nt_name, grp->unix_id, sid_str));
return ret;
}
/**************************************************************************
makes a group sid out of an nt domain, nt group name or a unix group name.
***************************************************************************/
static BOOL unix_name_to_nt_name_info(DOM_NAME_MAP *map, DOM_MAP_TYPE type)
{
/*
* Attempt to get the unix gid_t for this name.
*/
DEBUG(5,("unix_name_to_nt_name_info: unix_name:%s\n", map->unix_name));
if (type == DOM_MAP_USER)
{
const struct passwd *pwptr = Get_Pwnam(map->unix_name, False);
if (pwptr == NULL)
{
DEBUG(0,("unix_name_to_nt_name_info: Get_Pwnam for user %s\
failed. Error was %s.\n", map->unix_name, strerror(errno) ));
return False;
}
map->unix_id = (uint32)pwptr->pw_uid;
}
else
{
struct group *gptr = getgrnam(map->unix_name);
if (gptr == NULL)
{
DEBUG(0,("unix_name_to_nt_name_info: getgrnam for group %s\
failed. Error was %s.\n", map->unix_name, strerror(errno) ));
return False;
}
map->unix_id = (uint32)gptr->gr_gid;
}
DEBUG(5,("unix_name_to_nt_name_info: unix gid:%d\n", map->unix_id));
/*
* Now map the name to an NT SID+RID.
*/
if (map->nt_domain != NULL && !strequal(map->nt_domain, global_sam_name))
{
/* Must add client-call lookup code here, to
* resolve remote domain's sid and the group's rid,
* in that domain.
*
* NOTE: it is _incorrect_ to put code here that assumes
* we are responsible for lookups for foriegn domains' RIDs.
*
* for foriegn domains for which we are *NOT* the PDC, all
* we can be responsible for is the unix gid_t to which
* the foriegn SID+rid maps to, on this _local_ machine.
* we *CANNOT* make any short-cuts or assumptions about
* RIDs in a foriegn domain.
*/
if (!map_domain_name_to_sid(&map->sid, &(map->nt_domain)))
{
DEBUG(0,("unix_name_to_nt_name_info: no known sid for %s\n",
map->nt_domain));
return False;
}
}
return make_mydomain_sid(map, type);
}
static BOOL make_name_entry(name_map_entry **new_ep,
char *nt_domain, char *nt_group, char *unix_group,
DOM_MAP_TYPE type)
{
/*
* Create the list entry and add it onto the list.
*/
DEBUG(5,("make_name_entry:%s,%s,%s\n", nt_domain, nt_group, unix_group));
(*new_ep) = (name_map_entry *)malloc(sizeof(name_map_entry));
if ((*new_ep) == NULL)
{
DEBUG(0,("make_name_entry: malloc fail for name_map_entry.\n"));
return False;
}
ZERO_STRUCTP(*new_ep);
(*new_ep)->grp.nt_name = strdup(nt_group );
(*new_ep)->grp.nt_domain = strdup(nt_domain );
(*new_ep)->grp.unix_name = strdup(unix_group);
if ((*new_ep)->grp.nt_name == NULL ||
(*new_ep)->grp.unix_name == NULL)
{
DEBUG(0,("make_name_entry: malloc fail for names in name_map_entry.\n"));
delete_name_entry((*new_ep));
return False;
}
/*
* look up the group names, make the Group-SID and unix gid
*/
if (!unix_name_to_nt_name_info(&(*new_ep)->grp, type))
{
delete_name_entry((*new_ep));
return False;
}
return True;
}
/**************************************************************************
Load a name map file. Sets last accessed timestamp.
***************************************************************************/
static ubi_slList *load_name_map(DOM_MAP_TYPE type)
{
static time_t groupmap_file_last_modified = (time_t)0;
static time_t aliasmap_file_last_modified = (time_t)0;
static time_t ntusrmap_file_last_modified = (time_t)0;
static BOOL initialised_group = False;
static BOOL initialised_alias = False;
static BOOL initialised_ntusr = False;
char *groupname_map_file = lp_groupname_map();
char *aliasname_map_file = lp_aliasname_map();
char *ntusrname_map_file = lp_ntusrname_map();
FILE *fp;
char *s;
pstring buf;
name_map_entry *new_ep;
time_t *file_last_modified = NULL;
int *initialised = NULL;
char *map_file = NULL;
ubi_slList *map_list = NULL;
switch (type)
{
case DOM_MAP_DOMAIN:
{
file_last_modified = &groupmap_file_last_modified;
initialised = &initialised_group;
map_file = groupname_map_file;
map_list = &groupname_map_list;
break;
}
case DOM_MAP_LOCAL:
{
file_last_modified = &aliasmap_file_last_modified;
initialised = &initialised_alias;
map_file = aliasname_map_file;
map_list = &aliasname_map_list;
break;
}
case DOM_MAP_USER:
{
file_last_modified = &ntusrmap_file_last_modified;
initialised = &initialised_ntusr;
map_file = ntusrname_map_file;
map_list = &ntusrname_map_list;
break;
}
}
if (!(*initialised))
{
DEBUG(10,("initialising map %s\n", map_file));
ubi_slInitList(map_list);
(*initialised) = True;
}
if (!*map_file)
{
return map_list;
}
/*
* Load the file.
*/
fp = open_file_if_modified(map_file, "r", file_last_modified);
if (!fp)
{
return map_list;
}
/*
* Throw away any previous list.
*/
delete_map_list(map_list);
DEBUG(4,("load_name_map: Scanning name map %s\n",map_file));
while ((s = fgets_slash(buf, sizeof(buf), fp)) != NULL)
{
pstring unixname;
pstring nt_name;
fstring nt_domain;
fstring ntname;
char *p;
DEBUG(10,("Read line |%s|\n", s));
memset(nt_name, 0, sizeof(nt_name));
if (!*s || strchr("#;",*s))
continue;
if (!next_token(&s,unixname, "\t\n\r=", sizeof(unixname)))
continue;
if (!next_token(&s,nt_name, "\t\n\r=", sizeof(nt_name)))
continue;
trim_string(unixname, " ", " ");
trim_string(nt_name, " ", " ");
if (!*nt_name)
continue;
if (!*unixname)
continue;
p = strchr(nt_name, '\\');
if (p == NULL)
{
memset(nt_domain, 0, sizeof(nt_domain));
fstrcpy(ntname, nt_name);
}
else
{
*p = 0;
p++;
fstrcpy(nt_domain, nt_name);
fstrcpy(ntname , p);
}
if (make_name_entry(&new_ep, nt_domain, ntname, unixname, type))
{
ubi_slAddTail(map_list, (ubi_slNode *)new_ep);
DEBUG(5,("unixname = %s, ntname = %s\\%s type = %d\n",
new_ep->grp.unix_name,
new_ep->grp.nt_domain,
new_ep->grp.nt_name,
new_ep->grp.type));
}
}
DEBUG(10,("load_name_map: Added %ld entries to name map.\n",
ubi_slCount(map_list)));
fclose(fp);
return map_list;
}
static void copy_grp_map_entry(DOM_NAME_MAP *grp, const DOM_NAME_MAP *from)
{
sid_copy(&grp->sid, &from->sid);
grp->unix_id = from->unix_id;
grp->nt_name = from->nt_name;
grp->nt_domain = from->nt_domain;
grp->unix_name = from->unix_name;
grp->type = from->type;
}
#if 0
/***********************************************************
Lookup unix name.
************************************************************/
static BOOL map_unixname(DOM_MAP_TYPE type,
char *unixname, DOM_NAME_MAP *grp_info)
{
name_map_entry *gmep;
ubi_slList *map_list;
/*
* Initialise and load if not already loaded.
*/
map_list = load_name_map(type);
for (gmep = (name_map_entry *)ubi_slFirst(map_list);
gmep != NULL;
gmep = (name_map_entry *)ubi_slNext(gmep ))
{
if (strequal(gmep->grp.unix_name, unixname))
{
copy_grp_map_entry(grp_info, &gmep->grp);
DEBUG(7,("map_unixname: Mapping unix name %s to nt group %s.\n",
gmep->grp.unix_name, gmep->grp.nt_name ));
return True;
}
}
return False;
}
#endif
/***********************************************************
Lookup nt name.
************************************************************/
static BOOL map_ntname(DOM_MAP_TYPE type, char *ntname, char *ntdomain,
DOM_NAME_MAP *grp_info)
{
name_map_entry *gmep;
ubi_slList *map_list;
/*
* Initialise and load if not already loaded.
*/
map_list = load_name_map(type);
for (gmep = (name_map_entry *)ubi_slFirst(map_list);
gmep != NULL;
gmep = (name_map_entry *)ubi_slNext(gmep ))
{
if (strequal(gmep->grp.nt_name , ntname) &&
strequal(gmep->grp.nt_domain, ntdomain))
{
copy_grp_map_entry(grp_info, &gmep->grp);
DEBUG(7,("map_ntname: Mapping unix name %s to nt name %s.\n",
gmep->grp.unix_name, gmep->grp.nt_name ));
return True;
}
}
return False;
}
/***********************************************************
Lookup by SID
************************************************************/
static BOOL map_sid(DOM_MAP_TYPE type,
DOM_SID *psid, DOM_NAME_MAP *grp_info)
{
name_map_entry *gmep;
ubi_slList *map_list;
/*
* Initialise and load if not already loaded.
*/
map_list = load_name_map(type);
for (gmep = (name_map_entry *)ubi_slFirst(map_list);
gmep != NULL;
gmep = (name_map_entry *)ubi_slNext(gmep ))
{
if (sid_equal(&gmep->grp.sid, psid))
{
copy_grp_map_entry(grp_info, &gmep->grp);
DEBUG(7,("map_sid: Mapping unix name %s to nt name %s.\n",
gmep->grp.unix_name, gmep->grp.nt_name ));
return True;
}
}
return False;
}
/***********************************************************
Lookup by gid_t.
************************************************************/
static BOOL map_unixid(DOM_MAP_TYPE type, uint32 unix_id, DOM_NAME_MAP *grp_info)
{
name_map_entry *gmep;
ubi_slList *map_list;
/*
* Initialise and load if not already loaded.
*/
map_list = load_name_map(type);
for (gmep = (name_map_entry *)ubi_slFirst(map_list);
gmep != NULL;
gmep = (name_map_entry *)ubi_slNext(gmep ))
{
fstring sid_str;
sid_to_string(sid_str, &gmep->grp.sid);
DEBUG(10,("map_unixid: enum entry unix group %s %d nt %s %s\n",
gmep->grp.unix_name, gmep->grp.unix_id, gmep->grp.nt_name, sid_str));
if (gmep->grp.unix_id == unix_id)
{
copy_grp_map_entry(grp_info, &gmep->grp);
DEBUG(7,("map_unixid: Mapping unix name %s to nt name %s type %d\n",
gmep->grp.unix_name, gmep->grp.nt_name, gmep->grp.type));
return True;
}
}
return False;
}
/***********************************************************
*
* Call four functions to resolve unix group ids and either
* local group SIDs or domain group SIDs listed in the local group
* or domain group map files.
*
* Note that it is *NOT* the responsibility of these functions to
* resolve entries that are not in the map files.
*
* Any SID can be in the map files (i.e from any Domain).
*
***********************************************************/
#if 0
/***********************************************************
Lookup a UNIX Group entry by name.
************************************************************/
BOOL map_unix_group_name(char *group_name, DOM_NAME_MAP *grp_info)
{
return map_unixname(DOM_MAP_DOMAIN, group_name, grp_info);
}
/***********************************************************
Lookup a UNIX Alias entry by name.
************************************************************/
BOOL map_unix_alias_name(char *alias_name, DOM_NAME_MAP *grp_info)
{
return map_unixname(DOM_MAP_LOCAL, alias_name, grp_info);
}
/***********************************************************
Lookup an Alias name entry
************************************************************/
BOOL map_nt_alias_name(char *ntalias_name, char *nt_domain, DOM_NAME_MAP *grp_info)
{
return map_ntname(DOM_MAP_LOCAL, ntalias_name, nt_domain, grp_info);
}
/***********************************************************
Lookup a Group entry
************************************************************/
BOOL map_nt_group_name(char *ntgroup_name, char *nt_domain, DOM_NAME_MAP *grp_info)
{
return map_ntname(DOM_MAP_DOMAIN, ntgroup_name, nt_domain, grp_info);
}
#endif
/***********************************************************
Lookup a Username entry by name.
************************************************************/
static BOOL map_nt_username(char *nt_name, char *nt_domain, DOM_NAME_MAP *grp_info)
{
return map_ntname(DOM_MAP_USER, nt_name, nt_domain, grp_info);
}
/***********************************************************
Lookup a Username entry by SID.
************************************************************/
static BOOL map_username_sid(DOM_SID *sid, DOM_NAME_MAP *grp_info)
{
return map_sid(DOM_MAP_USER, sid, grp_info);
}
/***********************************************************
Lookup a Username SID entry by uid.
************************************************************/
static BOOL map_username_uid(uid_t gid, DOM_NAME_MAP *grp_info)
{
return map_unixid(DOM_MAP_USER, (uint32)gid, grp_info);
}
/***********************************************************
Lookup an Alias SID entry by name.
************************************************************/
BOOL map_alias_sid(DOM_SID *psid, DOM_NAME_MAP *grp_info)
{
return map_sid(DOM_MAP_LOCAL, psid, grp_info);
}
/***********************************************************
Lookup a Group entry by sid.
************************************************************/
BOOL map_group_sid(DOM_SID *psid, DOM_NAME_MAP *grp_info)
{
return map_sid(DOM_MAP_DOMAIN, psid, grp_info);
}
/***********************************************************
Lookup an Alias SID entry by gid_t.
************************************************************/
static BOOL map_alias_gid(gid_t gid, DOM_NAME_MAP *grp_info)
{
return map_unixid(DOM_MAP_LOCAL, (uint32)gid, grp_info);
}
/***********************************************************
Lookup a Group SID entry by gid_t.
************************************************************/
static BOOL map_group_gid( gid_t gid, DOM_NAME_MAP *grp_info)
{
return map_unixid(DOM_MAP_DOMAIN, (uint32)gid, grp_info);
}
/************************************************************************
Routine to look up User details by UNIX name
*************************************************************************/
BOOL lookupsmbpwnam(const char *unix_usr_name, DOM_NAME_MAP *grp)
{
uid_t uid;
DEBUG(10,("lookupsmbpwnam: unix user name %s\n", unix_usr_name));
if (nametouid(unix_usr_name, &uid))
{
return lookupsmbpwuid(uid, grp);
}
else
{
return False;
}
}
/************************************************************************
Routine to look up a remote nt name
*************************************************************************/
static BOOL lookup_remote_ntname(const char *ntname, DOM_SID *sid, uint8 *type)
{
struct cli_state cli;
POLICY_HND lsa_pol;
fstring srv_name;
extern struct ntuser_creds *usr_creds;
struct ntuser_creds usr;
BOOL res3 = True;
BOOL res4 = True;
uint32 num_sids;
DOM_SID *sids;
uint8 *types;
char *names[1];
usr_creds = &usr;
ZERO_STRUCT(usr);
pwd_set_nullpwd(&usr.pwd);
DEBUG(5,("lookup_remote_ntname: %s\n", ntname));
if (!cli_connect_serverlist(&cli, lp_passwordserver()))
{
return False;
}
names[0] = ntname;
fstrcpy(srv_name, "\\\\");
fstrcat(srv_name, cli.desthost);
strupper(srv_name);
/* lookup domain controller; receive a policy handle */
res3 = res3 ? lsa_open_policy( srv_name,
&lsa_pol, True) : False;
/* send lsa lookup sids call */
res4 = res3 ? lsa_lookup_names( &lsa_pol,
1, names,
&sids, &types, &num_sids) : False;
res3 = res3 ? lsa_close(&lsa_pol) : False;
if (res4 && res3 && sids != NULL && types != NULL)
{
sid_copy(sid, &sids[0]);
*type = types[0];
}
else
{
res3 = False;
}
if (types != NULL)
{
free(types);
}
if (sids != NULL)
{
free(sids);
}
return res3 && res4;
}
/************************************************************************
Routine to look up a remote nt name
*************************************************************************/
static BOOL get_sid_and_type(const char *fullntname, uint8 expected_type,
DOM_NAME_MAP *gmep)
{
/*
* check with the PDC to see if it owns the name. if so,
* the SID is resolved with the PDC database.
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
if (lookup_remote_ntname(fullntname, &gmep->sid, &gmep->type))
{
if (sid_front_equal(&gmep->sid, &global_member_sid) &&
strequal(gmep->nt_domain, global_myworkgroup) &&
gmep->type == expected_type)
{
return True;
}
return False;
}
}
/*
* ... otherwise, it's one of ours. map the sid ourselves,
* which can only happen in our own SAM database.
*/
if (!strequal(gmep->nt_domain, global_sam_name))
{
return False;
}
if (!pwdb_unixid_to_sam_sid(gmep->unix_id, gmep->type, &gmep->sid))
{
return False;
}
return True;
}
/*
* used by lookup functions below
*/
static fstring nt_name;
static fstring unix_name;
static fstring nt_domain;
/*************************************************************************
looks up a uid, returns User Information.
*************************************************************************/
BOOL lookupsmbpwuid(uid_t uid, DOM_NAME_MAP *gmep)
{
DEBUG(10,("lookupsmbpwuid: unix uid %d\n", uid));
if (map_username_uid(uid, gmep))
{
return True;
}
#if 0
if (lp_server_role() != ROLE_DOMAIN_NONE)
#endif
{
gmep->nt_name = nt_name;
gmep->unix_name = unix_name;
gmep->nt_domain = nt_domain;
gmep->unix_id = (uint32)uid;
/*
* ok, assume it's one of ours. then double-check it
* if we are a member of a domain
*/
gmep->type = SID_NAME_USER;
fstrcpy(gmep->nt_name, uidtoname(uid));
fstrcpy(gmep->unix_name, gmep->nt_name);
/*
* here we should do a LsaLookupNames() call
* to check the status of the name with the PDC.
* if the PDC know nothing of the name, it's ours.
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
#if 0
lsa_lookup_names(global_myworkgroup, gmep->nt_name, &gmep->sid...);
#endif
}
/*
* ok, it's one of ours.
*/
gmep->nt_domain = global_sam_name;
pwdb_unixid_to_sam_sid(gmep->unix_id, gmep->type, &gmep->sid);
return True;
}
/* oops. */
return False;
}
/*************************************************************************
looks up by NT name, returns User Information.
*************************************************************************/
BOOL lookupsmbpwntnam(const char *fullntname, DOM_NAME_MAP *gmep)
{
DEBUG(10,("lookupsmbpwntnam: nt user name %s\n", fullntname));
if (!split_domain_name(fullntname, nt_domain, nt_name))
{
return False;
}
if (map_nt_username(nt_name, nt_domain, gmep))
{
return True;
}
if (lp_server_role() != ROLE_DOMAIN_NONE)
{
uid_t uid;
gmep->nt_name = nt_name;
gmep->unix_name = unix_name;
gmep->nt_domain = nt_domain;
/*
* ok, it's one of ours. we therefore "create" an nt user named
* after the unix user. this is the point where "appliance mode"
* should get its teeth in, as unix users won't really exist,
* they will only be numbers...
*/
gmep->type = SID_NAME_USER;
fstrcpy(gmep->unix_name, gmep->nt_name);
if (!nametouid(gmep->unix_name, &uid))
{
return False;
}
gmep->unix_id = (uint32)uid;
return get_sid_and_type(fullntname, gmep->type, gmep);
}
/* oops. */
return False;
}
/*************************************************************************
looks up by RID, returns User Information.
*************************************************************************/
BOOL lookupsmbpwsid(DOM_SID *sid, DOM_NAME_MAP *gmep)
{
fstring sid_str;
sid_to_string(sid_str, sid);
DEBUG(10,("lookupsmbpwsid: nt sid %s\n", sid_str));
if (map_username_sid(sid, gmep))
{
return True;
}
if (lp_server_role() != ROLE_DOMAIN_NONE)
{
gmep->nt_name = nt_name;
gmep->unix_name = unix_name;
gmep->nt_domain = nt_domain;
/*
* here we should do a LsaLookupNames() call
* to check the status of the name with the PDC.
* if the PDC know nothing of the name, it's ours.
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
#if 0
if (lookup_remote_sid(global_myworkgroup, gmep->sid, gmep->nt_name, gmep->nt_domain...);
#endif
}
/*
* ok, it's one of ours. we therefore "create" an nt user named
* after the unix user. this is the point where "appliance mode"
* should get its teeth in, as unix users won't really exist,
* they will only be numbers...
*/
gmep->type = SID_NAME_USER;
sid_copy(&gmep->sid, sid);
if (!pwdb_sam_sid_to_unixid(&gmep->sid, gmep->type, &gmep->unix_id))
{
return False;
}
fstrcpy(gmep->nt_name, uidtoname((uid_t)gmep->unix_id));
fstrcpy(gmep->unix_name, gmep->nt_name);
gmep->nt_domain = global_sam_name;
return True;
}
/* oops. */
return False;
}
/************************************************************************
Routine to look up group / alias / well-known group RID by UNIX name
*************************************************************************/
BOOL lookupsmbgrpnam(const char *unix_grp_name, DOM_NAME_MAP *grp)
{
gid_t gid;
DEBUG(10,("lookupsmbgrpnam: unix user group %s\n", unix_grp_name));
if (nametogid(unix_grp_name, &gid))
{
return lookupsmbgrpgid(gid, grp);
}
else
{
return False;
}
}
/*************************************************************************
looks up a SID, returns name map entry
*************************************************************************/
BOOL lookupsmbgrpsid(DOM_SID *sid, DOM_NAME_MAP *gmep)
{
fstring sid_str;
sid_to_string(sid_str, sid);
DEBUG(10,("lookupsmbgrpsid: nt sid %s\n", sid_str));
if (map_alias_sid(sid, gmep))
{
return True;
}
if (map_group_sid(sid, gmep))
{
return True;
}
if (lp_server_role() != ROLE_DOMAIN_NONE)
{
gmep->nt_name = nt_name;
gmep->unix_name = unix_name;
gmep->nt_domain = nt_domain;
/*
* here we should do a LsaLookupNames() call
* to check the status of the name with the PDC.
* if the PDC know nothing of the name, it's ours.
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
#if 0
lsa_lookup_sids(global_myworkgroup, gmep->sid, gmep->nt_name, gmep->nt_domain...);
#endif
}
/*
* ok, it's one of ours. we therefore "create" an nt group or
* alias name named after the unix group. this is the point
* where "appliance mode" should get its teeth in, as unix
* groups won't really exist, they will only be numbers...
*/
/* name is not explicitly mapped
* with map files or the PDC
* so we are responsible for it...
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
/* ... as a LOCAL group. */
gmep->type = SID_NAME_ALIAS;
}
else
{
/* ... as a DOMAIN group. */
gmep->type = SID_NAME_DOM_GRP;
}
sid_copy(&gmep->sid, sid);
if (!pwdb_sam_sid_to_unixid(&gmep->sid, gmep->type, &gmep->unix_id))
{
return False;
}
fstrcpy(gmep->nt_name, gidtoname((gid_t)gmep->unix_id));
fstrcpy(gmep->unix_name, gmep->nt_name);
gmep->nt_domain = global_sam_name;
return True;
}
/* oops */
return False;
}
/*************************************************************************
looks up a gid, returns RID and type local, domain or well-known domain group
*************************************************************************/
BOOL lookupsmbgrpgid(gid_t gid, DOM_NAME_MAP *gmep)
{
DEBUG(10,("lookupsmbgrpgid: unix gid %d\n", (int)gid));
if (map_alias_gid(gid, gmep))
{
return True;
}
if (map_group_gid(gid, gmep))
{
return True;
}
if (lp_server_role() != ROLE_DOMAIN_NONE)
{
gmep->nt_name = nt_name;
gmep->unix_name = unix_name;
gmep->nt_domain = nt_domain;
gmep->unix_id = (uint32)gid;
/*
* here we should do a LsaLookupNames() call
* to check the status of the name with the PDC.
* if the PDC know nothing of the name, it's ours.
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
#if 0
if (lsa_lookup_names(global_myworkgroup, gmep->nt_name, &gmep->sid...);
{
return True;
}
#endif
}
/*
* ok, it's one of ours. we therefore "create" an nt group or
* alias name named after the unix group. this is the point
* where "appliance mode" should get its teeth in, as unix
* groups won't really exist, they will only be numbers...
*/
/* name is not explicitly mapped
* with map files or the PDC
* so we are responsible for it...
*/
if (lp_server_role() == ROLE_DOMAIN_MEMBER)
{
/* ... as a LOCAL group. */
gmep->type = SID_NAME_ALIAS;
}
else
{
/* ... as a DOMAIN group. */
gmep->type = SID_NAME_DOM_GRP;
}
fstrcpy(gmep->nt_name, gidtoname(gid));
fstrcpy(gmep->unix_name, gmep->nt_name);
return get_sid_and_type(gmep->nt_name, gmep->type, gmep);
}
/* oops */
return False;
}