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samba-mirror/source3/groupdb/groupunix.c
Luke Leighton 9a0cb06b24 fixing group database issues
(This used to be commit 591c63e3e1)
1998-11-25 23:11:25 +00:00

318 lines
8.5 KiB
C

/*
* Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
* Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
*
* 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.
*/
#include "includes.h"
#ifdef USE_SMBUNIX_DB
extern int DEBUGLEVEL;
extern DOM_SID global_sam_sid;
extern fstring global_sam_name;
/***************************************************************
Start to enumerate the grppasswd list. Returns a void pointer
to ensure no modification outside this module.
****************************************************************/
static void *startgrpunixpwent(BOOL update)
{
setgrent();
return (void*)(-1);
}
/***************************************************************
End enumeration of the grppasswd list.
****************************************************************/
static void endgrpunixpwent(void *vp)
{
endgrent();
}
/*************************************************************************
Return the current position in the grppasswd list as an SMB_BIG_UINT.
This must be treated as an opaque token.
*************************************************************************/
static SMB_BIG_UINT getgrpunixpwpos(void *vp)
{
return (SMB_BIG_UINT)0;
}
/*************************************************************************
Set the current position in the grppasswd list from an SMB_BIG_UINT.
This must be treated as an opaque token.
*************************************************************************/
static BOOL setgrpunixpwpos(void *vp, SMB_BIG_UINT tok)
{
return False;
}
/*************************************************************************
maps a unix group to a domain sid and an nt group name.
*************************************************************************/
static void map_unix_grp_to_nt_grp(char *unix_name,
struct group *unix_grp, char *nt_name, DOM_SID *sid)
{
BOOL found = False;
uint32 rid;
if (isdigit(unix_name[0]))
{
unix_grp->gr_gid = get_number(unix_name);
unix_grp->gr_name = unix_name;
found = map_group_gid(unix_grp->gr_gid, sid, nt_name, NULL);
}
else
{
unix_grp->gr_name = unix_name;
found = map_unix_group_name(unix_grp->gr_name, sid, nt_name, NULL);
}
if (found)
{
/*
* find the NT name represented by this UNIX gid.
* then, only accept NT groups that are in our domain
*/
sid_split_rid(sid, &rid);
}
else
{
/*
* assume that the UNIX group is an NT group with
* the same name. convert gid to a group rid.
*/
fstrcpy(nt_name, unix_grp->gr_name);
sid_copy(sid, &global_sam_sid);
}
}
/*************************************************************************
Routine to return the next entry in the smbdomaingroup list.
*************************************************************************/
BOOL get_unixgroup_members(struct group *grp,
int *num_mem, DOMAIN_GRP_MEMBER **members)
{
int i;
char *unix_name;
fstring nt_name;
if (num_mem == NULL || members == NULL)
{
return False;
}
(*num_mem) = 0;
(*members) = NULL;
for (i = 0; (unix_name = grp->gr_mem[i]) != NULL; i++)
{
DOM_SID sid;
struct group unix_grp;
map_unix_grp_to_nt_grp(unix_name, &unix_grp, nt_name, &sid);
if (!sid_equal(&sid, &global_sam_sid))
{
DEBUG(0,("group database: could not resolve name %s in domain %s\n",
unix_name, global_sam_name));
continue;
}
(*members) = Realloc((*members), ((*num_mem)+1) * sizeof(DOMAIN_GRP_MEMBER));
if ((*members) == NULL)
{
return False;
}
fstrcpy((*members)[(*num_mem)].name, nt_name);
(*members)[(*num_mem)].attr = 0x07;
(*num_mem)++;
}
return True;
}
/*************************************************************************
Routine to return the next entry in the domain group list.
if we are not a PDC or BDC, then we do NOT support Domain groups, only
aliases. try running MUSRMGR.EXE or running USRMGR.EXE selected on a
workstation, you will find that no Domain groups are listed: only aliases.
so, as a PDC or BDC, all unix groups not explicitly mapped using
map_group_gid() are treated as Domain groups.
*************************************************************************/
static DOMAIN_GRP *getgrpunixpwent(void *vp, DOMAIN_GRP_MEMBER **mem, int *num_mem)
{
/* Static buffers we will return. */
static DOMAIN_GRP gp_buf;
struct group *unix_grp;
if (lp_server_role() == ROLE_DOMAIN_NONE ||
lp_server_role() == ROLE_DOMAIN_MEMBER)
{
/*
* only PDC and BDC have domain groups in the SAM.
* (however as member of domain you can have LOCAL groups,
* but that's dealt with in the aliasdb...)
*/
return NULL;
}
gpdb_init_grp(&gp_buf);
fstrcpy(gp_buf.comment, "");
gp_buf.attr = 0x07;
/* cycle through unix groups */
while ((unix_grp = getgrent()) != NULL)
{
DOM_SID sid;
BOOL is_alias;
DEBUG(10,("getgrpunixpwent: enum unix group entry %s\n",
unix_grp->gr_name));
is_alias = map_alias_gid(unix_grp->gr_gid, &sid, NULL, NULL);
if (is_alias)
{
sid_split_rid(&sid, NULL);
is_alias = sid_equal(&sid, &global_sam_sid);
}
if (map_group_gid(unix_grp->gr_gid, &sid, gp_buf.name, NULL))
{
fstring sid_str;
/*
* find the NT name represented by this UNIX gid.
* then, only accept NT groups that are in our domain
*/
sid_to_string(sid_str, &sid);
DEBUG(10,("getgrpunixpwent: entry %s mapped to name %s, SID %s\n",
unix_grp->gr_name, gp_buf.name, sid_str));
sid_split_rid(&sid, &gp_buf.rid);
if (sid_equal(&sid, &global_sam_sid))
{
if (!is_alias)
{
break; /* hooray. */
}
DEBUG(0,("configuration mistake: unix group %s is mapped to both an NT alias and an NT group\n",
gp_buf.name));
}
}
else if (!is_alias)
{
/*
* assume that the UNIX group is an NT group with
* the same name. convert gid to a group rid.
*/
fstrcpy(gp_buf.name, unix_grp->gr_name);
gp_buf.rid = pwdb_gid_to_group_rid(unix_grp->gr_gid);
break;
}
}
if (unix_grp == NULL)
{
return NULL;
}
/* get the user's domain groups. there are a maximum of 32 */
if (mem != NULL && num_mem != NULL)
{
(*mem) = NULL;
(*num_mem) = 0;
get_unixgroup_members(unix_grp, num_mem, mem);
}
{
pstring linebuf;
make_group_line(linebuf, sizeof(linebuf), &gp_buf, mem, num_mem);
DEBUG(10,("line: '%s'\n", linebuf));
}
return &gp_buf;
}
/************************************************************************
Routine to add an entry to the grppasswd file.
*************************************************************************/
static BOOL add_grpunixgrp_entry(DOMAIN_GRP *newgrp)
{
DEBUG(0, ("add_grpunixgrp_entry: NOT IMPLEMENTED\n"));
return False;
}
/************************************************************************
Routine to search the grppasswd file for an entry matching the groupname.
and then modify its group entry. We can't use the startgrppwent()/
getgrppwent()/endgrppwent() interfaces here as we depend on looking
in the actual file to decide how much room we have to write data.
override = False, normal
override = True, override XXXXXXXX'd out group or NO PASS
************************************************************************/
static BOOL mod_grpunixgrp_entry(DOMAIN_GRP* grp)
{
DEBUG(0, ("mod_grpunixgrp_entry: NOT IMPLEMENTED\n"));
return False;
}
static struct groupdb_ops unix_ops =
{
startgrpunixpwent,
endgrpunixpwent,
getgrpunixpwpos,
setgrpunixpwpos,
iterate_getgroupnam, /* In groupdb.c */
iterate_getgroupgid, /* In groupdb.c */
iterate_getgrouprid, /* In groupdb.c */
getgrpunixpwent,
add_grpunixgrp_entry,
mod_grpunixgrp_entry,
iterate_getusergroupsnam /* in groupdb.c */
};
struct groupdb_ops *unix_initialise_group_db(void)
{
return &unix_ops;
}
#else
/* Do *NOT* make this function static. It breaks the compile on gcc. JRA */
void unix_grppass_dummy_function(void) { } /* stop some compilers complaining */
#endif /* USE_SMBPASS_DB */