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samba-mirror/source4/groupdb/mapping.c
Andrew Tridgell ef2e26c91b first public release of samba4 code
(This used to be commit b0510b5428)
2003-08-13 01:53:07 +00:00

1341 lines
36 KiB
C

/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-2000,
* Copyright (C) Jean François Micouleau 1998-2001.
*
* 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"
static TDB_CONTEXT *tdb; /* used for driver files */
#define DATABASE_VERSION_V1 1 /* native byte format. */
#define DATABASE_VERSION_V2 2 /* le format. */
#define GROUP_PREFIX "UNIXGROUP/"
PRIVS privs[] = {
{SE_PRIV_NONE, "no_privs", "No privilege" }, /* this one MUST be first */
{SE_PRIV_ADD_MACHINES, "SeMachineAccountPrivilege", "Add workstations to the domain" },
{SE_PRIV_SEC_PRIV, "SeSecurityPrivilege", "Manage the audit logs" },
{SE_PRIV_TAKE_OWNER, "SeTakeOwnershipPrivilege", "Take ownership of file" },
{SE_PRIV_ADD_USERS, "SaAddUsers", "Add users to the domain - Samba" },
{SE_PRIV_PRINT_OPERATOR, "SaPrintOp", "Add or remove printers - Samba" },
{SE_PRIV_ALL, "SaAllPrivs", "all privileges" }
};
/*
PRIVS privs[] = {
{ 2, "SeCreateTokenPrivilege" },
{ 3, "SeAssignPrimaryTokenPrivilege" },
{ 4, "SeLockMemoryPrivilege" },
{ 5, "SeIncreaseQuotaPrivilege" },
{ 6, "SeMachineAccountPrivilege" },
{ 7, "SeTcbPrivilege" },
{ 8, "SeSecurityPrivilege" },
{ 9, "SeTakeOwnershipPrivilege" },
{ 10, "SeLoadDriverPrivilege" },
{ 11, "SeSystemProfilePrivilege" },
{ 12, "SeSystemtimePrivilege" },
{ 13, "SeProfileSingleProcessPrivilege" },
{ 14, "SeIncreaseBasePriorityPrivilege" },
{ 15, "SeCreatePagefilePrivilege" },
{ 16, "SeCreatePermanentPrivilege" },
{ 17, "SeBackupPrivilege" },
{ 18, "SeRestorePrivilege" },
{ 19, "SeShutdownPrivilege" },
{ 20, "SeDebugPrivilege" },
{ 21, "SeAuditPrivilege" },
{ 22, "SeSystemEnvironmentPrivilege" },
{ 23, "SeChangeNotifyPrivilege" },
{ 24, "SeRemoteShutdownPrivilege" },
{ 25, "SeUndockPrivilege" },
{ 26, "SeSyncAgentPrivilege" },
{ 27, "SeEnableDelegationPrivilege" },
};
*/
/*
* Those are not really privileges like the other ones.
* They are handled in a special case and called
* system privileges.
*
* SeNetworkLogonRight
* SeUnsolicitedInputPrivilege
* SeBatchLogonRight
* SeServiceLogonRight
* SeInteractiveLogonRight
* SeDenyInteractiveLogonRight
* SeDenyNetworkLogonRight
* SeDenyBatchLogonRight
* SeDenyBatchLogonRight
*/
#if 0
/****************************************************************************
check if the user has the required privilege.
****************************************************************************/
static BOOL se_priv_access_check(NT_USER_TOKEN *token, uint32 privilege)
{
/* no token, no privilege */
if (token==NULL)
return False;
if ((token->privilege & privilege)==privilege)
return True;
return False;
}
#endif
/****************************************************************************
dump the mapping group mapping to a text file
****************************************************************************/
char *decode_sid_name_use(fstring group, enum SID_NAME_USE name_use)
{
static fstring group_type;
switch(name_use) {
case SID_NAME_USER:
fstrcpy(group_type,"User");
break;
case SID_NAME_DOM_GRP:
fstrcpy(group_type,"Domain group");
break;
case SID_NAME_DOMAIN:
fstrcpy(group_type,"Domain");
break;
case SID_NAME_ALIAS:
fstrcpy(group_type,"Local group");
break;
case SID_NAME_WKN_GRP:
fstrcpy(group_type,"Builtin group");
break;
case SID_NAME_DELETED:
fstrcpy(group_type,"Deleted");
break;
case SID_NAME_INVALID:
fstrcpy(group_type,"Invalid");
break;
case SID_NAME_UNKNOWN:
default:
fstrcpy(group_type,"Unknown type");
break;
}
fstrcpy(group, group_type);
return group_type;
}
/****************************************************************************
initialise first time the mapping list - called from init_group_mapping()
****************************************************************************/
static BOOL default_group_mapping(void)
{
DOM_SID sid_admins;
DOM_SID sid_users;
DOM_SID sid_guests;
fstring str_admins;
fstring str_users;
fstring str_guests;
LUID_ATTR set;
PRIVILEGE_SET privilege_none;
PRIVILEGE_SET privilege_all;
PRIVILEGE_SET privilege_print_op;
init_privilege(&privilege_none);
init_privilege(&privilege_all);
init_privilege(&privilege_print_op);
set.attr=0;
set.luid.high=0;
set.luid.low=SE_PRIV_PRINT_OPERATOR;
add_privilege(&privilege_print_op, set);
add_all_privilege(&privilege_all);
/* Add the Wellknown groups */
add_initial_entry(-1, "S-1-5-32-544", SID_NAME_ALIAS, "Administrators", "", privilege_all, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-545", SID_NAME_ALIAS, "Users", "", privilege_none, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-546", SID_NAME_ALIAS, "Guests", "", privilege_none, PR_ACCESS_FROM_NETWORK);
add_initial_entry(-1, "S-1-5-32-547", SID_NAME_ALIAS, "Power Users", "", privilege_none, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-548", SID_NAME_ALIAS, "Account Operators", "", privilege_none, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-549", SID_NAME_ALIAS, "System Operators", "", privilege_none, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-550", SID_NAME_ALIAS, "Print Operators", "", privilege_print_op, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-551", SID_NAME_ALIAS, "Backup Operators", "", privilege_none, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
add_initial_entry(-1, "S-1-5-32-552", SID_NAME_ALIAS, "Replicators", "", privilege_none, PR_ACCESS_FROM_NETWORK);
/* Add the defaults domain groups */
sid_copy(&sid_admins, get_global_sam_sid());
sid_append_rid(&sid_admins, DOMAIN_GROUP_RID_ADMINS);
sid_to_string(str_admins, &sid_admins);
add_initial_entry(-1, str_admins, SID_NAME_DOM_GRP, "Domain Admins", "", privilege_all, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
sid_copy(&sid_users, get_global_sam_sid());
sid_append_rid(&sid_users, DOMAIN_GROUP_RID_USERS);
sid_to_string(str_users, &sid_users);
add_initial_entry(-1, str_users, SID_NAME_DOM_GRP, "Domain Users", "", privilege_none, PR_ACCESS_FROM_NETWORK|PR_LOG_ON_LOCALLY);
sid_copy(&sid_guests, get_global_sam_sid());
sid_append_rid(&sid_guests, DOMAIN_GROUP_RID_GUESTS);
sid_to_string(str_guests, &sid_guests);
add_initial_entry(-1, str_guests, SID_NAME_DOM_GRP, "Domain Guests", "", privilege_none, PR_ACCESS_FROM_NETWORK);
return True;
}
/****************************************************************************
Open the group mapping tdb.
****************************************************************************/
static BOOL init_group_mapping(void)
{
static pid_t local_pid;
const char *vstring = "INFO/version";
int32 vers_id;
TALLOC_CTX *mem_ctx;
if (tdb && local_pid == getpid())
return True;
mem_ctx = talloc_init("init_group_mapping");
if (!mem_ctx) {
DEBUG(0,("No memory to open group mapping database\n"));
return False;
}
tdb = tdb_open_log(lock_path(mem_ctx, "group_mapping.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
talloc_destroy(mem_ctx);
if (!tdb) {
DEBUG(0,("Failed to open group mapping database\n"));
return False;
}
local_pid = getpid();
/* handle a Samba upgrade */
tdb_lock_bystring(tdb, vstring, 0);
/* Cope with byte-reversed older versions of the db. */
vers_id = tdb_fetch_int32(tdb, vstring);
if ((vers_id == DATABASE_VERSION_V1) || (IREV(vers_id) == DATABASE_VERSION_V1)) {
/* Written on a bigendian machine with old fetch_int code. Save as le. */
tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
vers_id = DATABASE_VERSION_V2;
}
if (vers_id != DATABASE_VERSION_V2) {
tdb_traverse(tdb, tdb_traverse_delete_fn, NULL);
tdb_store_int32(tdb, vstring, DATABASE_VERSION_V2);
}
tdb_unlock_bystring(tdb, vstring);
/* write a list of default groups */
if(!default_group_mapping())
return False;
return True;
}
/****************************************************************************
****************************************************************************/
BOOL add_mapping_entry(GROUP_MAP *map, int flag)
{
TDB_DATA kbuf, dbuf;
pstring key, buf;
fstring string_sid="";
int len;
int i;
PRIVILEGE_SET *set;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
sid_to_string(string_sid, &map->sid);
len = tdb_pack(buf, sizeof(buf), "ddffd",
map->gid, map->sid_name_use, map->nt_name, map->comment, map->systemaccount);
/* write the privilege list in the TDB database */
set=&map->priv_set;
len += tdb_pack(buf+len, sizeof(buf)-len, "d", set->count);
for (i=0; i<set->count; i++)
len += tdb_pack(buf+len, sizeof(buf)-len, "ddd",
set->set[i].luid.low, set->set[i].luid.high, set->set[i].attr);
if (len > sizeof(buf))
return False;
slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
kbuf.dsize = strlen(key)+1;
kbuf.dptr = key;
dbuf.dsize = len;
dbuf.dptr = buf;
if (tdb_store(tdb, kbuf, dbuf, flag) != 0) return False;
return True;
}
/****************************************************************************
initialise first time the mapping list
****************************************************************************/
BOOL add_initial_entry(gid_t gid, const char *sid, enum SID_NAME_USE sid_name_use,
const char *nt_name, const char *comment, PRIVILEGE_SET priv_set, uint32 systemaccount)
{
GROUP_MAP map;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
map.gid=gid;
if (!string_to_sid(&map.sid, sid)) {
DEBUG(0, ("string_to_sid failed: %s", sid));
return False;
}
map.sid_name_use=sid_name_use;
fstrcpy(map.nt_name, nt_name);
fstrcpy(map.comment, comment);
map.systemaccount=systemaccount;
map.priv_set.count=priv_set.count;
map.priv_set.set=priv_set.set;
pdb_add_group_mapping_entry(&map);
return True;
}
/****************************************************************************
initialise a privilege list
****************************************************************************/
void init_privilege(PRIVILEGE_SET *priv_set)
{
priv_set->count=0;
priv_set->control=0;
priv_set->set=NULL;
}
/****************************************************************************
free a privilege list
****************************************************************************/
BOOL free_privilege(PRIVILEGE_SET *priv_set)
{
if (priv_set->count==0) {
DEBUG(100,("free_privilege: count=0, nothing to clear ?\n"));
return False;
}
if (priv_set->set==NULL) {
DEBUG(0,("free_privilege: list ptr is NULL, very strange !\n"));
return False;
}
safe_free(priv_set->set);
priv_set->count=0;
priv_set->control=0;
priv_set->set=NULL;
return True;
}
/****************************************************************************
add a privilege to a privilege array
****************************************************************************/
BOOL add_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set)
{
LUID_ATTR *new_set;
/* check if the privilege is not already in the list */
if (check_priv_in_privilege(priv_set, set))
return False;
/* we can allocate memory to add the new privilege */
new_set=(LUID_ATTR *)Realloc(priv_set->set, (priv_set->count+1)*(sizeof(LUID_ATTR)));
if (new_set==NULL) {
DEBUG(0,("add_privilege: could not Realloc memory to add a new privilege\n"));
return False;
}
new_set[priv_set->count].luid.high=set.luid.high;
new_set[priv_set->count].luid.low=set.luid.low;
new_set[priv_set->count].attr=set.attr;
priv_set->count++;
priv_set->set=new_set;
return True;
}
/****************************************************************************
add all the privileges to a privilege array
****************************************************************************/
BOOL add_all_privilege(PRIVILEGE_SET *priv_set)
{
LUID_ATTR set;
set.attr=0;
set.luid.high=0;
set.luid.low=SE_PRIV_ADD_USERS;
add_privilege(priv_set, set);
set.luid.low=SE_PRIV_ADD_MACHINES;
add_privilege(priv_set, set);
set.luid.low=SE_PRIV_PRINT_OPERATOR;
add_privilege(priv_set, set);
return True;
}
/****************************************************************************
check if the privilege list is empty
****************************************************************************/
BOOL check_empty_privilege(PRIVILEGE_SET *priv_set)
{
return (priv_set->count == 0);
}
/****************************************************************************
check if the privilege is in the privilege list
****************************************************************************/
BOOL check_priv_in_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set)
{
int i;
/* if the list is empty, obviously we can't have it */
if (check_empty_privilege(priv_set))
return False;
for (i=0; i<priv_set->count; i++) {
LUID_ATTR *cur_set;
cur_set=&priv_set->set[i];
/* check only the low and high part. Checking the attr field has no meaning */
if( (cur_set->luid.low==set.luid.low) && (cur_set->luid.high==set.luid.high) )
return True;
}
return False;
}
/****************************************************************************
remove a privilege from a privilege array
****************************************************************************/
BOOL remove_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set)
{
LUID_ATTR *new_set;
LUID_ATTR *old_set;
int i,j;
/* check if the privilege is in the list */
if (!check_priv_in_privilege(priv_set, set))
return False;
/* special case if it's the only privilege in the list */
if (priv_set->count==1) {
free_privilege(priv_set);
init_privilege(priv_set);
return True;
}
/*
* the privilege is there, create a new list,
* and copy the other privileges
*/
old_set=priv_set->set;
new_set=(LUID_ATTR *)malloc((priv_set->count-1)*(sizeof(LUID_ATTR)));
if (new_set==NULL) {
DEBUG(0,("remove_privilege: could not malloc memory for new privilege list\n"));
return False;
}
for (i=0, j=0; i<priv_set->count; i++) {
if ((old_set[i].luid.low==set.luid.low) &&
(old_set[i].luid.high==set.luid.high)) {
continue;
}
new_set[j].luid.low=old_set[i].luid.low;
new_set[j].luid.high=old_set[i].luid.high;
new_set[j].attr=old_set[i].attr;
j++;
}
if (j!=priv_set->count-1) {
DEBUG(0,("remove_privilege: mismatch ! difference is not -1\n"));
DEBUGADD(0,("old count:%d, new count:%d\n", priv_set->count, j));
safe_free(new_set);
return False;
}
/* ok everything is fine */
priv_set->count--;
priv_set->set=new_set;
safe_free(old_set);
return True;
}
/****************************************************************************
Return the sid and the type of the unix group.
****************************************************************************/
BOOL get_group_map_from_sid(DOM_SID sid, GROUP_MAP *map, BOOL with_priv)
{
TDB_DATA kbuf, dbuf;
pstring key;
fstring string_sid;
int ret;
int i;
PRIVILEGE_SET *set;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
/* the key is the SID, retrieving is direct */
sid_to_string(string_sid, &sid);
slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
kbuf.dptr = key;
kbuf.dsize = strlen(key)+1;
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
return False;
ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddffd",
&map->gid, &map->sid_name_use, &map->nt_name, &map->comment, &map->systemaccount);
set=&map->priv_set;
init_privilege(set);
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "d", &set->count);
DEBUG(10,("get_group_map_from_sid: %d privileges\n", map->priv_set.count));
set->set = NULL;
if (set->count) {
set->set=(LUID_ATTR *)smb_xmalloc(set->count*sizeof(LUID_ATTR));
}
for (i=0; i<set->count; i++)
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "ddd",
&(set->set[i].luid.low), &(set->set[i].luid.high), &(set->set[i].attr));
SAFE_FREE(dbuf.dptr);
if (ret != dbuf.dsize) {
DEBUG(0,("get_group_map_from_sid: group mapping TDB corrupted ?\n"));
free_privilege(set);
return False;
}
/* we don't want the privileges */
if (with_priv==MAPPING_WITHOUT_PRIV)
free_privilege(set);
sid_copy(&map->sid, &sid);
return True;
}
/****************************************************************************
Return the sid and the type of the unix group.
****************************************************************************/
BOOL get_group_map_from_gid(gid_t gid, GROUP_MAP *map, BOOL with_priv)
{
TDB_DATA kbuf, dbuf, newkey;
fstring string_sid;
int ret;
int i;
PRIVILEGE_SET *set;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
/* we need to enumerate the TDB to find the GID */
for (kbuf = tdb_firstkey(tdb);
kbuf.dptr;
newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
continue;
fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
string_to_sid(&map->sid, string_sid);
ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddffd",
&map->gid, &map->sid_name_use, &map->nt_name, &map->comment, &map->systemaccount);
set=&map->priv_set;
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "d", &set->count);
set->set = NULL;
if (set->count) {
set->set=(LUID_ATTR *)smb_xmalloc(set->count*sizeof(LUID_ATTR));
}
for (i=0; i<set->count; i++)
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "ddd",
&(set->set[i].luid.low), &(set->set[i].luid.high), &(set->set[i].attr));
SAFE_FREE(dbuf.dptr);
if (ret != dbuf.dsize){
free_privilege(set);
continue;
}
if (gid==map->gid) {
if (!with_priv)
free_privilege(&map->priv_set);
return True;
}
free_privilege(set);
}
return False;
}
/****************************************************************************
Return the sid and the type of the unix group.
****************************************************************************/
BOOL get_group_map_from_ntname(char *name, GROUP_MAP *map, BOOL with_priv)
{
TDB_DATA kbuf, dbuf, newkey;
fstring string_sid;
int ret;
int i;
PRIVILEGE_SET *set;
if(!init_group_mapping()) {
DEBUG(0,("get_group_map_from_ntname:failed to initialize group mapping"));
return(False);
}
/* we need to enumerate the TDB to find the name */
for (kbuf = tdb_firstkey(tdb);
kbuf.dptr;
newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0) continue;
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
continue;
fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
string_to_sid(&map->sid, string_sid);
ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddffd",
&map->gid, &map->sid_name_use, &map->nt_name, &map->comment, &map->systemaccount);
set=&map->priv_set;
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "d", &set->count);
set->set=(LUID_ATTR *)malloc(set->count*sizeof(LUID_ATTR));
if (set->set==NULL) {
DEBUG(0,("get_group_map_from_ntname: could not allocate memory for privileges\n"));
return False;
}
for (i=0; i<set->count; i++)
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "ddd",
&(set->set[i].luid.low), &(set->set[i].luid.high), &(set->set[i].attr));
SAFE_FREE(dbuf.dptr);
if (ret != dbuf.dsize) {
free_privilege(set);
continue;
}
if (StrCaseCmp(name, map->nt_name)==0) {
if (!with_priv)
free_privilege(&map->priv_set);
return True;
}
free_privilege(set);
}
return False;
}
/****************************************************************************
Remove a group mapping entry.
****************************************************************************/
BOOL group_map_remove(DOM_SID sid)
{
TDB_DATA kbuf, dbuf;
pstring key;
fstring string_sid;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
/* the key is the SID, retrieving is direct */
sid_to_string(string_sid, &sid);
slprintf(key, sizeof(key), "%s%s", GROUP_PREFIX, string_sid);
kbuf.dptr = key;
kbuf.dsize = strlen(key)+1;
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
return False;
SAFE_FREE(dbuf.dptr);
if(tdb_delete(tdb, kbuf) != TDB_SUCCESS)
return False;
return True;
}
/****************************************************************************
Enumerate the group mapping.
****************************************************************************/
BOOL enum_group_mapping(enum SID_NAME_USE sid_name_use, GROUP_MAP **rmap,
int *num_entries, BOOL unix_only, BOOL with_priv)
{
TDB_DATA kbuf, dbuf, newkey;
fstring string_sid;
fstring group_type;
GROUP_MAP map;
GROUP_MAP *mapt;
int ret;
int entries=0;
int i;
PRIVILEGE_SET *set;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
*num_entries=0;
*rmap=NULL;
for (kbuf = tdb_firstkey(tdb);
kbuf.dptr;
newkey = tdb_nextkey(tdb, kbuf), safe_free(kbuf.dptr), kbuf=newkey) {
if (strncmp(kbuf.dptr, GROUP_PREFIX, strlen(GROUP_PREFIX)) != 0)
continue;
dbuf = tdb_fetch(tdb, kbuf);
if (!dbuf.dptr)
continue;
fstrcpy(string_sid, kbuf.dptr+strlen(GROUP_PREFIX));
ret = tdb_unpack(dbuf.dptr, dbuf.dsize, "ddffd",
&map.gid, &map.sid_name_use, &map.nt_name, &map.comment, &map.systemaccount);
set=&map.priv_set;
init_privilege(set);
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "d", &set->count);
if (set->count!=0) {
set->set=(LUID_ATTR *)malloc(set->count*sizeof(LUID_ATTR));
if (set->set==NULL) {
DEBUG(0,("enum_group_mapping: could not allocate memory for privileges\n"));
return False;
}
}
for (i=0; i<set->count; i++)
ret += tdb_unpack(dbuf.dptr+ret, dbuf.dsize-ret, "ddd",
&(set->set[i].luid.low), &(set->set[i].luid.high), &(set->set[i].attr));
SAFE_FREE(dbuf.dptr);
if (ret != dbuf.dsize) {
DEBUG(11,("enum_group_mapping: error in memory size\n"));
free_privilege(set);
continue;
}
/* list only the type or everything if UNKNOWN */
if (sid_name_use!=SID_NAME_UNKNOWN && sid_name_use!=map.sid_name_use) {
DEBUG(11,("enum_group_mapping: group %s is not of the requested type\n", map.nt_name));
free_privilege(set);
continue;
}
if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) {
DEBUG(11,("enum_group_mapping: group %s is non mapped\n", map.nt_name));
free_privilege(set);
continue;
}
string_to_sid(&map.sid, string_sid);
decode_sid_name_use(group_type, map.sid_name_use);
DEBUG(11,("enum_group_mapping: returning group %s of type %s\n", map.nt_name ,group_type));
mapt=(GROUP_MAP *)Realloc((*rmap), (entries+1)*sizeof(GROUP_MAP));
if (!mapt) {
DEBUG(0,("enum_group_mapping: Unable to enlarge group map!\n"));
SAFE_FREE(*rmap);
free_privilege(set);
return False;
}
else
(*rmap) = mapt;
mapt[entries].gid = map.gid;
sid_copy( &mapt[entries].sid, &map.sid);
mapt[entries].sid_name_use = map.sid_name_use;
fstrcpy(mapt[entries].nt_name, map.nt_name);
fstrcpy(mapt[entries].comment, map.comment);
mapt[entries].systemaccount=map.systemaccount;
mapt[entries].priv_set.count=set->count;
mapt[entries].priv_set.control=set->control;
mapt[entries].priv_set.set=set->set;
if (!with_priv)
free_privilege(&(mapt[entries].priv_set));
entries++;
}
*num_entries=entries;
return True;
}
/****************************************************************************
convert a privilege string to a privilege array
****************************************************************************/
void convert_priv_from_text(PRIVILEGE_SET *se_priv, char *privilege)
{
pstring tok;
const char *p = privilege;
int i;
LUID_ATTR set;
/* By default no privilege */
init_privilege(se_priv);
if (privilege==NULL)
return;
while(next_token(&p, tok, " ", sizeof(tok)) ) {
for (i=0; i<=PRIV_ALL_INDEX; i++) {
if (StrCaseCmp(privs[i].priv, tok)==0) {
set.attr=0;
set.luid.high=0;
set.luid.low=privs[i].se_priv;
add_privilege(se_priv, set);
}
}
}
}
/****************************************************************************
convert a privilege array to a privilege string
****************************************************************************/
void convert_priv_to_text(PRIVILEGE_SET *se_priv, char *privilege)
{
int i,j;
if (privilege==NULL)
return;
ZERO_STRUCTP(privilege);
if (check_empty_privilege(se_priv)) {
fstrcat(privilege, "No privilege");
return;
}
for(i=0; i<se_priv->count; i++) {
j=1;
while (privs[j].se_priv!=se_priv->set[i].luid.low && j<=PRIV_ALL_INDEX) {
j++;
}
fstrcat(privilege, privs[j].priv);
fstrcat(privilege, " ");
}
}
/*
*
* High level functions
* better to use them than the lower ones.
*
* we are checking if the group is in the mapping file
* and if the group is an existing unix group
*
*/
/* get a domain group from it's SID */
BOOL get_domain_group_from_sid(DOM_SID sid, GROUP_MAP *map, BOOL with_priv)
{
struct group *grp;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
DEBUG(10, ("get_domain_group_from_sid\n"));
/* if the group is NOT in the database, it CAN NOT be a domain group */
if(!pdb_getgrsid(map, sid, with_priv))
return False;
DEBUG(10, ("get_domain_group_from_sid: SID found in the TDB\n"));
/* if it's not a domain group, continue */
if (map->sid_name_use!=SID_NAME_DOM_GRP) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
DEBUG(10, ("get_domain_group_from_sid: SID is a domain group\n"));
if (map->gid==-1) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
DEBUG(10, ("get_domain_group_from_sid: SID is mapped to gid:%d\n",map->gid));
if ( (grp=getgrgid(map->gid)) == NULL) {
DEBUG(10, ("get_domain_group_from_sid: gid DOESN'T exist in UNIX security\n"));
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
DEBUG(10, ("get_domain_group_from_sid: gid exists in UNIX security\n"));
return True;
}
/* get a local (alias) group from it's SID */
BOOL get_local_group_from_sid(DOM_SID sid, GROUP_MAP *map, BOOL with_priv)
{
struct group *grp;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
/* The group is in the mapping table */
if(pdb_getgrsid(map, sid, with_priv)) {
if (map->sid_name_use!=SID_NAME_ALIAS) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
if (map->gid==-1) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
if ( (grp=getgrgid(map->gid)) == NULL) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
} else {
/* the group isn't in the mapping table.
* make one based on the unix information */
uint32 alias_rid;
sid_peek_rid(&sid, &alias_rid);
map->gid=pdb_group_rid_to_gid(alias_rid);
if ((grp=getgrgid(map->gid)) == NULL)
return False;
map->sid_name_use=SID_NAME_ALIAS;
map->systemaccount=PR_ACCESS_FROM_NETWORK;
fstrcpy(map->nt_name, grp->gr_name);
fstrcpy(map->comment, "Local Unix Group");
init_privilege(&map->priv_set);
sid_copy(&map->sid, &sid);
}
return True;
}
/* get a builtin group from it's SID */
BOOL get_builtin_group_from_sid(DOM_SID sid, GROUP_MAP *map, BOOL with_priv)
{
struct group *grp;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
if(!pdb_getgrsid(map, sid, with_priv))
return False;
if (map->sid_name_use!=SID_NAME_WKN_GRP) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
if (map->gid==-1) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
if ( (grp=getgrgid(map->gid)) == NULL) {
if (with_priv)
free_privilege(&map->priv_set);
return False;
}
return True;
}
/****************************************************************************
Returns a GROUP_MAP struct based on the gid.
****************************************************************************/
BOOL get_group_from_gid(gid_t gid, GROUP_MAP *map, BOOL with_priv)
{
struct group *grp;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
if ( (grp=getgrgid(gid)) == NULL)
return False;
/*
* make a group map from scratch if doesn't exist.
*/
if (!pdb_getgrgid(map, gid, with_priv)) {
map->gid=gid;
map->sid_name_use=SID_NAME_ALIAS;
map->systemaccount=PR_ACCESS_FROM_NETWORK;
init_privilege(&map->priv_set);
/* interim solution until we have a last RID allocated */
sid_copy(&map->sid, get_global_sam_sid());
sid_append_rid(&map->sid, pdb_gid_to_group_rid(gid));
fstrcpy(map->nt_name, grp->gr_name);
fstrcpy(map->comment, "Local Unix Group");
}
return True;
}
/****************************************************************************
Get the member users of a group and
all the users who have that group as primary.
give back an array of uid
return the grand number of users
TODO: sort the list and remove duplicate. JFM.
****************************************************************************/
BOOL get_uid_list_of_group(gid_t gid, uid_t **uid, int *num_uids)
{
struct group *grp;
struct passwd *pwd;
int i=0;
char *gr;
uid_t *u;
if(!init_group_mapping()) {
DEBUG(0,("failed to initialize group mapping"));
return(False);
}
*num_uids = 0;
*uid=NULL;
if ( (grp=getgrgid(gid)) == NULL)
return False;
gr = grp->gr_mem[0];
DEBUG(10, ("getting members\n"));
while (gr && (*gr != (char)'\0')) {
u = Realloc((*uid), sizeof(uid_t)*(*num_uids+1));
if (!u) {
DEBUG(0,("get_uid_list_of_group: unable to enlarge uid list!\n"));
return False;
}
else (*uid) = u;
if( (pwd=getpwnam_alloc(gr)) !=NULL) {
(*uid)[*num_uids]=pwd->pw_uid;
(*num_uids)++;
}
passwd_free(&pwd);
gr = grp->gr_mem[++i];
}
DEBUG(10, ("got [%d] members\n", *num_uids));
setpwent();
while ((pwd=getpwent()) != NULL) {
if (pwd->pw_gid==gid) {
u = Realloc((*uid), sizeof(uid_t)*(*num_uids+1));
if (!u) {
DEBUG(0,("get_uid_list_of_group: unable to enlarge uid list!\n"));
return False;
}
else (*uid) = u;
(*uid)[*num_uids]=pwd->pw_uid;
(*num_uids)++;
}
}
endpwent();
DEBUG(10, ("got primary groups, members: [%d]\n", *num_uids));
return True;
}
/****************************************************************************
Create a UNIX group on demand.
****************************************************************************/
int smb_create_group(char *unix_group, gid_t *new_gid)
{
pstring add_script;
int ret;
int fd = 0;
pstrcpy(add_script, lp_addgroup_script());
if (! *add_script) return -1;
pstring_sub(add_script, "%g", unix_group);
ret = smbrun(add_script, (new_gid!=NULL) ? &fd : NULL);
DEBUG(3,("smb_create_group: Running the command `%s' gave %d\n",add_script,ret));
if (ret != 0)
return ret;
if (fd != 0) {
fstring output;
*new_gid = 0;
if (read(fd, output, sizeof(output)) > 0) {
*new_gid = (gid_t)strtoul(output, NULL, 10);
}
close(fd);
if (*new_gid == 0) {
/* The output was garbage. We assume nobody
will create group 0 via smbd. Now we try to
get the group via getgrnam. */
struct group *grp = getgrnam(unix_group);
if (grp != NULL)
*new_gid = grp->gr_gid;
else
return 1;
}
}
return ret;
}
/****************************************************************************
Delete a UNIX group on demand.
****************************************************************************/
int smb_delete_group(char *unix_group)
{
pstring del_script;
int ret;
pstrcpy(del_script, lp_delgroup_script());
if (! *del_script) return -1;
pstring_sub(del_script, "%g", unix_group);
ret = smbrun(del_script,NULL);
DEBUG(3,("smb_delete_group: Running the command `%s' gave %d\n",del_script,ret));
return ret;
}
/****************************************************************************
Set a user's primary UNIX group.
****************************************************************************/
int smb_set_primary_group(const char *unix_group, const char* unix_user)
{
pstring add_script;
int ret;
pstrcpy(add_script, lp_setprimarygroup_script());
if (! *add_script) return -1;
all_string_sub(add_script, "%g", unix_group, sizeof(add_script));
all_string_sub(add_script, "%u", unix_user, sizeof(add_script));
ret = smbrun(add_script,NULL);
DEBUG(3,("smb_set_primary_group: "
"Running the command `%s' gave %d\n",add_script,ret));
return ret;
}
/****************************************************************************
Add a user to a UNIX group.
****************************************************************************/
int smb_add_user_group(char *unix_group, char *unix_user)
{
pstring add_script;
int ret;
pstrcpy(add_script, lp_addusertogroup_script());
if (! *add_script) return -1;
pstring_sub(add_script, "%g", unix_group);
pstring_sub(add_script, "%u", unix_user);
ret = smbrun(add_script,NULL);
DEBUG(3,("smb_add_user_group: Running the command `%s' gave %d\n",add_script,ret));
return ret;
}
/****************************************************************************
Delete a user from a UNIX group
****************************************************************************/
int smb_delete_user_group(const char *unix_group, const char *unix_user)
{
pstring del_script;
int ret;
pstrcpy(del_script, lp_deluserfromgroup_script());
if (! *del_script) return -1;
pstring_sub(del_script, "%g", unix_group);
pstring_sub(del_script, "%u", unix_user);
ret = smbrun(del_script,NULL);
DEBUG(3,("smb_delete_user_group: Running the command `%s' gave %d\n",del_script,ret));
return ret;
}
NTSTATUS pdb_default_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
DOM_SID sid, BOOL with_priv)
{
return get_group_map_from_sid(sid, map, with_priv) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
NTSTATUS pdb_default_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
gid_t gid, BOOL with_priv)
{
return get_group_map_from_gid(gid, map, with_priv) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
NTSTATUS pdb_default_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
char *name, BOOL with_priv)
{
return get_group_map_from_ntname(name, map, with_priv) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
NTSTATUS pdb_default_add_group_mapping_entry(struct pdb_methods *methods,
GROUP_MAP *map)
{
return add_mapping_entry(map, TDB_INSERT) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
NTSTATUS pdb_default_update_group_mapping_entry(struct pdb_methods *methods,
GROUP_MAP *map)
{
return add_mapping_entry(map, TDB_REPLACE) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
NTSTATUS pdb_default_delete_group_mapping_entry(struct pdb_methods *methods,
DOM_SID sid)
{
return group_map_remove(sid) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
NTSTATUS pdb_default_enum_group_mapping(struct pdb_methods *methods,
enum SID_NAME_USE sid_name_use,
GROUP_MAP **rmap, int *num_entries,
BOOL unix_only, BOOL with_priv)
{
return enum_group_mapping(sid_name_use, rmap, num_entries, unix_only,
with_priv) ?
NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}