mirror of
https://github.com/samba-team/samba.git
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r23485: This checkin consists mostly of refactorings in preparation of the
activation of global registry options in loadparm.c, mainly to
extract functionality from net_conf.c to be made availabel elsewhere
and to minimize linker dependencies.
In detail:
* move functions registry_push/pull_value from lib/util_reg.c to new file
lib/util_reg_api.c
* create a fake user token consisting of builtin administrators sid and
se_disk_operators privilege by hand instead of using get_root_nt_token()
to minimize linker deps for bin/net.
+ new function registry_create_admin_token() in new lib/util_reg_smbconf.c
+ move dup_nt_token from auth/token_util.c to new file lib/util_nttoken.c
+ adapt net_conf.c and Makefile.in accordingly.
* split lib/profiles.c into two parts: new file lib/profiles_basic.c
takes all the low level mask manipulation and format conversion functions
(se_priv, privset, luid). the privs array is completely hidden from
profiles.c by adding some access-functions. some mask-functions are not
static anymore.
Generally, SID- and LUID-related stuff that has more dependencies
is kept in lib/profiles.c
* Move initialization of regdb from net_conf.c into a function
registry_init_regdb() in lib/util_reg_smbconf.c.
Michael
(This used to be commit efd3e2bfb7
)
This commit is contained in:
committed by
Gerald (Jerry) Carter
parent
0b86e40306
commit
6090601c8b
519
source3/lib/privileges_basic.c
Normal file
519
source3/lib/privileges_basic.c
Normal file
@ -0,0 +1,519 @@
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/*
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Unix SMB/CIFS implementation.
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Privileges handling functions
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Copyright (C) Jean François Micouleau 1998-2001
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Copyright (C) Simo Sorce 2002-2003
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Copyright (C) Gerald (Jerry) Carter 2005
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Copyright (C) Michael Adam 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Basic privileges functions (mask-operations and conversion
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* functions between the different formats (se_priv, privset, luid)
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* moved here * from lib/privileges.c to minimize linker deps.
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*
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* generally SID- and LUID-related code is left in lib/privileges.c
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*
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* some extra functions to hide privs array from lib/privileges.c
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*/
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#include "includes.h"
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const SE_PRIV se_priv_all = SE_ALL_PRIVS;
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static const SE_PRIV se_priv_end = SE_END;
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/* Define variables for all privileges so we can use the
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SE_PRIV* in the various se_priv_XXX() functions */
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const SE_PRIV se_priv_none = SE_NONE;
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const SE_PRIV se_machine_account = SE_MACHINE_ACCOUNT;
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const SE_PRIV se_print_operator = SE_PRINT_OPERATOR;
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const SE_PRIV se_add_users = SE_ADD_USERS;
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const SE_PRIV se_disk_operators = SE_DISK_OPERATOR;
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const SE_PRIV se_remote_shutdown = SE_REMOTE_SHUTDOWN;
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const SE_PRIV se_restore = SE_RESTORE;
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const SE_PRIV se_take_ownership = SE_TAKE_OWNERSHIP;
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/********************************************************************
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This is a list of privileges reported by a WIndows 2000 SP4 AD DC
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just for reference purposes (and I know the LUID is not guaranteed
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across reboots):
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SeCreateTokenPrivilege Create a token object ( 0x0, 0x2 )
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SeAssignPrimaryTokenPrivilege Replace a process level token ( 0x0, 0x3 )
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SeLockMemoryPrivilege Lock pages in memory ( 0x0, 0x4 )
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SeIncreaseQuotaPrivilege Increase quotas ( 0x0, 0x5 )
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SeMachineAccountPrivilege Add workstations to domain ( 0x0, 0x6 )
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SeTcbPrivilege Act as part of the operating system ( 0x0, 0x7 )
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SeSecurityPrivilege Manage auditing and security log ( 0x0, 0x8 )
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SeTakeOwnershipPrivilege Take ownership of files or other objects ( 0x0, 0x9 )
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SeLoadDriverPrivilege Load and unload device drivers ( 0x0, 0xa )
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SeSystemProfilePrivilege Profile system performance ( 0x0, 0xb )
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SeSystemtimePrivilege Change the system time ( 0x0, 0xc )
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SeProfileSingleProcessPrivilege Profile single process ( 0x0, 0xd )
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SeIncreaseBasePriorityPrivilege Increase scheduling priority ( 0x0, 0xe )
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SeCreatePagefilePrivilege Create a pagefile ( 0x0, 0xf )
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SeCreatePermanentPrivilege Create permanent shared objects ( 0x0, 0x10 )
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SeBackupPrivilege Back up files and directories ( 0x0, 0x11 )
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SeRestorePrivilege Restore files and directories ( 0x0, 0x12 )
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SeShutdownPrivilege Shut down the system ( 0x0, 0x13 )
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SeDebugPrivilege Debug programs ( 0x0, 0x14 )
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SeAuditPrivilege Generate security audits ( 0x0, 0x15 )
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SeSystemEnvironmentPrivilege Modify firmware environment values ( 0x0, 0x16 )
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SeChangeNotifyPrivilege Bypass traverse checking ( 0x0, 0x17 )
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SeRemoteShutdownPrivilege Force shutdown from a remote system ( 0x0, 0x18 )
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SeUndockPrivilege Remove computer from docking station ( 0x0, 0x19 )
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SeSyncAgentPrivilege Synchronize directory service data ( 0x0, 0x1a )
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SeEnableDelegationPrivilege Enable computer and user accounts to be trusted for delegation ( 0x0, 0x1b )
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SeManageVolumePrivilege Perform volume maintenance tasks ( 0x0, 0x1c )
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SeImpersonatePrivilege Impersonate a client after authentication ( 0x0, 0x1d )
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SeCreateGlobalPrivilege Create global objects ( 0x0, 0x1e )
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********************************************************************/
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/* we have to define the LUID here due to a horrible check by printmig.exe
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that requires the SeBackupPrivilege match what is in Windows. So match
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those that we implement and start Samba privileges at 0x1001 */
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PRIVS privs[] = {
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#if 0 /* usrmgr will display these twice if you include them. We don't
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use them but we'll keep the bitmasks reserved in privileges.h anyways */
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{SE_NETWORK_LOGON, "SeNetworkLogonRight", "Access this computer from network", { 0x0, 0x0 }},
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{SE_INTERACTIVE_LOGON, "SeInteractiveLogonRight", "Log on locally", { 0x0, 0x0 }},
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{SE_BATCH_LOGON, "SeBatchLogonRight", "Log on as a batch job", { 0x0, 0x0 }},
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{SE_SERVICE_LOGON, "SeServiceLogonRight", "Log on as a service", { 0x0, 0x0 }},
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#endif
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{SE_MACHINE_ACCOUNT, "SeMachineAccountPrivilege", "Add machines to domain", { 0x0, 0x0006 }},
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{SE_TAKE_OWNERSHIP, "SeTakeOwnershipPrivilege", "Take ownership of files or other objects",{ 0x0, 0x0009 }},
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{SE_BACKUP, "SeBackupPrivilege", "Back up files and directories", { 0x0, 0x0011 }},
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{SE_RESTORE, "SeRestorePrivilege", "Restore files and directories", { 0x0, 0x0012 }},
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{SE_REMOTE_SHUTDOWN, "SeRemoteShutdownPrivilege", "Force shutdown from a remote system", { 0x0, 0x0018 }},
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{SE_PRINT_OPERATOR, "SePrintOperatorPrivilege", "Manage printers", { 0x0, 0x1001 }},
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{SE_ADD_USERS, "SeAddUsersPrivilege", "Add users and groups to the domain", { 0x0, 0x1002 }},
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{SE_DISK_OPERATOR, "SeDiskOperatorPrivilege", "Manage disk shares", { 0x0, 0x1003 }},
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{SE_END, "", "", { 0x0, 0x0 }}
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};
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/***************************************************************************
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copy an SE_PRIV structure
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****************************************************************************/
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BOOL se_priv_copy( SE_PRIV *dst, const SE_PRIV *src )
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{
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if ( !dst || !src )
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return False;
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memcpy( dst, src, sizeof(SE_PRIV) );
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return True;
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}
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/***************************************************************************
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put all privileges into a mask
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****************************************************************************/
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BOOL se_priv_put_all_privileges(SE_PRIV *mask)
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{
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int i;
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uint32 num_privs = count_all_privileges();
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if (!se_priv_copy(mask, &se_priv_none)) {
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return False;
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}
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for ( i=0; i<num_privs; i++ ) {
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se_priv_add(mask, &privs[i].se_priv);
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}
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return True;
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}
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/***************************************************************************
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combine 2 SE_PRIV structures and store the resulting set in mew_mask
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****************************************************************************/
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void se_priv_add( SE_PRIV *mask, const SE_PRIV *addpriv )
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{
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int i;
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for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
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mask->mask[i] |= addpriv->mask[i];
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}
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}
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/***************************************************************************
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remove one SE_PRIV sytucture from another and store the resulting set
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in mew_mask
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****************************************************************************/
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void se_priv_remove( SE_PRIV *mask, const SE_PRIV *removepriv )
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{
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int i;
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for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
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mask->mask[i] &= ~removepriv->mask[i];
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}
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}
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/***************************************************************************
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invert a given SE_PRIV and store the set in new_mask
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****************************************************************************/
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static void se_priv_invert( SE_PRIV *new_mask, const SE_PRIV *mask )
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{
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SE_PRIV allprivs;
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se_priv_copy( &allprivs, &se_priv_all );
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se_priv_remove( &allprivs, mask );
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se_priv_copy( new_mask, &allprivs );
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}
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/***************************************************************************
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check if 2 SE_PRIV structure are equal
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****************************************************************************/
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BOOL se_priv_equal( const SE_PRIV *mask1, const SE_PRIV *mask2 )
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{
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return ( memcmp(mask1, mask2, sizeof(SE_PRIV)) == 0 );
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}
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/***************************************************************************
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check if a SE_PRIV has any assigned privileges
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****************************************************************************/
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static BOOL se_priv_empty( const SE_PRIV *mask )
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{
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SE_PRIV p1;
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int i;
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se_priv_copy( &p1, mask );
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for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
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p1.mask[i] &= se_priv_all.mask[i];
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}
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return se_priv_equal( &p1, &se_priv_none );
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}
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/*********************************************************************
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Lookup the SE_PRIV value for a privilege name
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*********************************************************************/
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BOOL se_priv_from_name( const char *name, SE_PRIV *mask )
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{
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int i;
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for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
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if ( strequal( privs[i].name, name ) ) {
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se_priv_copy( mask, &privs[i].se_priv );
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return True;
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}
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}
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return False;
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}
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/***************************************************************************
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dump an SE_PRIV structure to the log files
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****************************************************************************/
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void dump_se_priv( int dbg_cl, int dbg_lvl, const SE_PRIV *mask )
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{
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int i;
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DEBUGADDC( dbg_cl, dbg_lvl,("SE_PRIV "));
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for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) {
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DEBUGADDC( dbg_cl, dbg_lvl,(" 0x%x", mask->mask[i] ));
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}
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DEBUGADDC( dbg_cl, dbg_lvl, ("\n"));
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}
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/****************************************************************************
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check if the privilege is in the privilege list
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****************************************************************************/
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BOOL is_privilege_assigned(const SE_PRIV *privileges,
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const SE_PRIV *check)
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{
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SE_PRIV p1, p2;
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if ( !privileges || !check )
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return False;
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/* everyone has privileges if you aren't checking for any */
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if ( se_priv_empty( check ) ) {
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DEBUG(1,("is_privilege_assigned: no privileges in check_mask!\n"));
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return True;
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}
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se_priv_copy( &p1, check );
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/* invert the SE_PRIV we want to check for and remove that from the
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original set. If we are left with the SE_PRIV we are checking
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for then return True */
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se_priv_invert( &p1, check );
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se_priv_copy( &p2, privileges );
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se_priv_remove( &p2, &p1 );
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return se_priv_equal( &p2, check );
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}
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/****************************************************************************
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check if the privilege is in the privilege list
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****************************************************************************/
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static BOOL is_any_privilege_assigned( SE_PRIV *privileges, const SE_PRIV *check )
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{
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SE_PRIV p1, p2;
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if ( !privileges || !check )
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return False;
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/* everyone has privileges if you aren't checking for any */
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if ( se_priv_empty( check ) ) {
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DEBUG(1,("is_any_privilege_assigned: no privileges in check_mask!\n"));
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return True;
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}
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se_priv_copy( &p1, check );
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/* invert the SE_PRIV we want to check for and remove that from the
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original set. If we are left with the SE_PRIV we are checking
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for then return True */
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se_priv_invert( &p1, check );
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se_priv_copy( &p2, privileges );
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se_priv_remove( &p2, &p1 );
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/* see if we have any bits left */
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return !se_priv_empty( &p2 );
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}
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/*********************************************************************
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Generate the LUID_ATTR structure based on a bitmask
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*********************************************************************/
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const char* get_privilege_dispname( const char *name )
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{
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int i;
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for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
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if ( strequal( privs[i].name, name ) ) {
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return privs[i].description;
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}
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}
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return NULL;
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}
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/****************************************************************************
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initialise a privilege list and set the talloc context
|
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****************************************************************************/
|
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/****************************************************************************
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Does the user have the specified privilege ? We only deal with one privilege
|
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at a time here.
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*****************************************************************************/
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BOOL user_has_privileges(const NT_USER_TOKEN *token, const SE_PRIV *privilege)
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{
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if ( !token )
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return False;
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return is_privilege_assigned( &token->privileges, privilege );
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}
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/****************************************************************************
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Does the user have any of the specified privileges ? We only deal with one privilege
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at a time here.
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*****************************************************************************/
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BOOL user_has_any_privilege(NT_USER_TOKEN *token, const SE_PRIV *privilege)
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{
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if ( !token )
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return False;
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return is_any_privilege_assigned( &token->privileges, privilege );
|
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}
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|
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/*******************************************************************
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return the number of elements in the privlege array
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*******************************************************************/
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int count_all_privileges( void )
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{
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static int count;
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if ( count )
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return count;
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/* loop over the array and count it */
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for ( count=0; !se_priv_equal(&privs[count].se_priv, &se_priv_end); count++ ) ;
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return count;
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}
|
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|
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|
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/*********************************************************************
|
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Generate the LUID_ATTR structure based on a bitmask
|
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The assumption here is that the privilege has already been validated
|
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so we are guaranteed to find it in the list.
|
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*********************************************************************/
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LUID_ATTR get_privilege_luid( SE_PRIV *mask )
|
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{
|
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LUID_ATTR priv_luid;
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int i;
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ZERO_STRUCT( priv_luid );
|
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|
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for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
|
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if ( se_priv_equal( &privs[i].se_priv, mask ) ) {
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priv_luid.luid = privs[i].luid;
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break;
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}
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}
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return priv_luid;
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}
|
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|
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/****************************************************************************
|
||||
Convert a LUID to a named string
|
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****************************************************************************/
|
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char* luid_to_privilege_name(const LUID *set)
|
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{
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static fstring name;
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int i;
|
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|
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if (set->high != 0)
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return NULL;
|
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|
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for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) {
|
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if ( set->low == privs[i].luid.low ) {
|
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fstrcpy( name, privs[i].name );
|
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return name;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/****************************************************************************
|
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add a privilege to a privilege array
|
||||
****************************************************************************/
|
||||
|
||||
static BOOL privilege_set_add(PRIVILEGE_SET *priv_set, LUID_ATTR set)
|
||||
{
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LUID_ATTR *new_set;
|
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|
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/* we can allocate memory to add the new privilege */
|
||||
|
||||
new_set = TALLOC_REALLOC_ARRAY(priv_set->mem_ctx, priv_set->set, LUID_ATTR, priv_set->count + 1);
|
||||
if ( !new_set ) {
|
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DEBUG(0,("privilege_set_add: failed to allocate memory!\n"));
|
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return False;
|
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}
|
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|
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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;
|
||||
|
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priv_set->count++;
|
||||
priv_set->set = new_set;
|
||||
|
||||
return True;
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
*******************************************************************/
|
||||
|
||||
BOOL se_priv_to_privilege_set( PRIVILEGE_SET *set, SE_PRIV *mask )
|
||||
{
|
||||
int i;
|
||||
uint32 num_privs = count_all_privileges();
|
||||
LUID_ATTR luid;
|
||||
|
||||
luid.attr = 0;
|
||||
luid.luid.high = 0;
|
||||
|
||||
for ( i=0; i<num_privs; i++ ) {
|
||||
if ( !is_privilege_assigned(mask, &privs[i].se_priv) )
|
||||
continue;
|
||||
|
||||
luid.luid = privs[i].luid;
|
||||
|
||||
if ( !privilege_set_add( set, luid ) )
|
||||
return False;
|
||||
}
|
||||
|
||||
return True;
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
*******************************************************************/
|
||||
|
||||
static BOOL luid_to_se_priv( LUID *luid, SE_PRIV *mask )
|
||||
{
|
||||
int i;
|
||||
uint32 num_privs = count_all_privileges();
|
||||
|
||||
for ( i=0; i<num_privs; i++ ) {
|
||||
if ( luid->low == privs[i].luid.low ) {
|
||||
se_priv_copy( mask, &privs[i].se_priv );
|
||||
return True;
|
||||
}
|
||||
}
|
||||
|
||||
return False;
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
*******************************************************************/
|
||||
|
||||
BOOL privilege_set_to_se_priv( SE_PRIV *mask, PRIVILEGE_SET *privset )
|
||||
{
|
||||
int i;
|
||||
|
||||
ZERO_STRUCTP( mask );
|
||||
|
||||
for ( i=0; i<privset->count; i++ ) {
|
||||
SE_PRIV r;
|
||||
|
||||
/* sanity check for invalid privilege. we really
|
||||
only care about the low 32 bits */
|
||||
|
||||
if ( privset->set[i].luid.high != 0 )
|
||||
return False;
|
||||
|
||||
if ( luid_to_se_priv( &privset->set[i].luid, &r ) )
|
||||
se_priv_add( mask, &r );
|
||||
}
|
||||
|
||||
return True;
|
||||
}
|
||||
|
Reference in New Issue
Block a user