diff options
Diffstat (limited to 'source/lib/privileges.c')
| -rw-r--r-- | source/lib/privileges.c | 853 |
1 files changed, 632 insertions, 221 deletions
diff --git a/source/lib/privileges.c b/source/lib/privileges.c index 2b8d7613c18..628b2dd3251 100644 --- a/source/lib/privileges.c +++ b/source/lib/privileges.c @@ -3,6 +3,7 @@ Privileges handling functions Copyright (C) Jean François Micouleau 1998-2001 Copyright (C) Simo Sorce 2002-2003 + Copyright (C) Gerald (Jerry) Carter 2004 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 @@ -19,143 +20,270 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + #include "includes.h" -/* defines */ +#define PRIVPREFIX "PRIV_" -#define ALLOC_CHECK(ptr, err, label, str) do { if ((ptr) == NULL) { DEBUG(0, ("%s: out of memory!\n", str)); err = NT_STATUS_NO_MEMORY; goto label; } } while(0) -#define NTSTATUS_CHECK(err, label, str1, str2) do { if (!NT_STATUS_IS_OK(err)) { DEBUG(0, ("%s: %s failed!\n", str1, str2)); } } while(0) +#define GENERATE_LUID_LOW(x) (x)+1; -/**************************************************************************** - Check if a user is a mapped group. - - This function will check if the group SID is mapped onto a - system managed gid or onto a winbind manged sid. - In the first case it will be threated like a mapped group - and the backend should take the member list with a getgrgid - and ignore any user that have been possibly set into the group - object. - - In the second case, the group is a fully SAM managed group - served back to the system through winbind. In this case the - members of a Local group are "unrolled" to cope with the fact - that unix cannot contain groups inside groups. - The backend MUST never call any getgr* / getpw* function or - loops with winbind may happen. - ****************************************************************************/ +static SE_PRIV se_priv_all = SE_ALL_PRIVS; +static SE_PRIV se_priv_end = SE_END; +static SE_PRIV se_priv_none = SE_NONE; -#if 0 -NTSTATUS is_mapped_group(BOOL *mapped, const DOM_SID *sid) -{ - NTSTATUS result; - gid_t id; - - /* look if mapping exist, do not make idmap alloc an uid if SID is not found */ - result = idmap_get_gid_from_sid(&id, sid, False); - if (NT_STATUS_IS_OK(result)) { - *mapped = gid_is_in_winbind_range(id); - } else { - *mapped = False; - } +/* Define variables for all privileges so we can use the + SE_PRIV* in the various se_priv_XXX() functions */ - return result; -} -#endif +const SE_PRIV se_machine_account = SE_MACHINE_ACCOUNT; +const SE_PRIV se_print_operator = SE_PRINT_OPERATOR; +const SE_PRIV se_add_users = SE_ADD_USERS; +const SE_PRIV se_disk_operators = SE_DISK_OPERATOR; +const SE_PRIV se_remote_shutdown = SE_REMOTE_SHUTDOWN; -/**************************************************************************** - duplicate alloc luid_attr - ****************************************************************************/ -NTSTATUS dupalloc_luid_attr(TALLOC_CTX *mem_ctx, LUID_ATTR **new_la, LUID_ATTR *old_la) -{ - NTSTATUS ret; +PRIVS privs[] = { +#if 0 /* usrmgr will display these twice if you include them. We don't + use them but we'll keep the bitmasks reserved in privileges.h anyways */ + + {SE_NETWORK_LOGON, "SeNetworkLogonRight", "Access this computer from network"}, + {SE_INTERACTIVE_LOGON, "SeInteractiveLogonRight", "Log on locally"}, + {SE_BATCH_LOGON, "SeBatchLogonRight", "Log on as a batch job"}, + {SE_SERVICE_LOGON, "SeServiceLogonRight", "Log on as a service"}, +#endif + {SE_MACHINE_ACCOUNT, "SeMachineAccountPrivilege", "Add machines to domain"}, + {SE_PRINT_OPERATOR, "SePrintOperatorPrivilege", "Manage printers"}, + {SE_ADD_USERS, "SeAddUsersPrivilege", "Add users and groups to the domain"}, + {SE_REMOTE_SHUTDOWN, "SeRemoteShutdownPrivilege", "Force shutdown from a remote system"}, + {SE_DISK_OPERATOR, "SeDiskOperatorPrivilege", "Manage disk shares"}, + + {SE_END, "", ""} +}; + +#if 0 /* not needed currently */ +PRIVS privs[] = { + {SE_ASSIGN_PRIMARY_TOKEN, "SeAssignPrimaryTokenPrivilege", "Assign Primary Token"}, + {SE_CREATE_TOKEN, "SeCreateTokenPrivilege", "Create Token"}, + {SE_LOCK_MEMORY, "SeLockMemoryPrivilege", "Lock Memory"}, + {SE_INCREASE_QUOTA, "SeIncreaseQuotaPrivilege", "Increase Quota"}, + {SE_UNSOLICITED_INPUT, "SeUnsolicitedInputPrivilege", "Unsolicited Input"}, + {SE_TCB, "SeTcbPrivilege", "Act as part of the operating system"}, + {SE_SECURITY, "SeSecurityPrivilege", "Security Privilege"}, + {SE_TAKE_OWNERSHIP, "SeTakeOwnershipPrivilege", "Take Ownership Privilege"}, + {SE_LOAD_DRIVER, "SeLocalDriverPrivilege", "Local Driver Privilege"}, + {SE_SYSTEM_PROFILE, "SeSystemProfilePrivilege", "System Profile Privilege"}, + {SE_SYSTEM_TIME, "SeSystemtimePrivilege", "System Time"}, + {SE_PROF_SINGLE_PROCESS, "SeProfileSingleProcessPrivilege", "Profile Single Process Privilege"}, + {SE_INC_BASE_PRIORITY, "SeIncreaseBasePriorityPrivilege", "Increase Base Priority Privilege"}, + {SE_CREATE_PAGEFILE, "SeCreatePagefilePrivilege", "Create Pagefile Privilege"}, + {SE_CREATE_PERMANENT, "SeCreatePermanentPrivilege", "Create Permanent"}, + {SE_BACKUP, "SeBackupPrivilege", "Backup Privilege"}, + {SE_RESTORE, "SeRestorePrivilege", "Restore Privilege"}, + {SE_SHUTDOWN, "SeShutdownPrivilege", "Shutdown Privilege"}, + {SE_DEBUG, "SeDebugPrivilege", "Debug Privilege"}, + {SE_AUDIT, "SeAuditPrivilege", "Audit"}, + {SE_SYSTEM_ENVIRONMENT, "SeSystemEnvironmentPrivilege", "System Environment Privilege"}, + {SE_CHANGE_NOTIFY, "SeChangeNotifyPrivilege", "Change Notify"}, + {SE_UNDOCK, "SeUndockPrivilege", "Undock"}, + {SE_SYNC_AGENT, "SeSynchronizationAgentPrivilege", "Synchronization Agent"}, + {SE_ENABLE_DELEGATION, "SeEnableDelegationPrivilege", "Enable Delegation"}, + {SE_ALL_PRIVS, "SeAllPrivileges", "All Privileges"} + {SE_END, "", ""} +}; +#endif - /* don't crash if the source pointer is NULL (since we don't - do priviledges now anyways) */ +typedef struct priv_sid_list { + SE_PRIV privilege; + SID_LIST sids; +} PRIV_SID_LIST; - if ( !old_la ) - return NT_STATUS_OK; - *new_la = TALLOC_P(mem_ctx, LUID_ATTR); - ALLOC_CHECK(new_la, ret, done, "dupalloc_luid_attr"); +/*************************************************************************** + copy an SE_PRIV structure +****************************************************************************/ - (*new_la)->luid.high = old_la->luid.high; - (*new_la)->luid.low = old_la->luid.low; - (*new_la)->attr = old_la->attr; +BOOL se_priv_copy( SE_PRIV *dst, const SE_PRIV *src ) +{ + if ( !dst || !src ) + return False; + + memcpy( dst, src, sizeof(SE_PRIV) ); - ret = NT_STATUS_OK; - -done: - return ret; + return True; } -/**************************************************************************** - initialise a privilege list - ****************************************************************************/ -NTSTATUS init_privilege(PRIVILEGE_SET **priv_set) +/*************************************************************************** + combine 2 SE_PRIV structures and store the resulting set in mew_mask +****************************************************************************/ + +static void se_priv_add( SE_PRIV *mask, const SE_PRIV *addpriv ) { - NTSTATUS ret; - TALLOC_CTX *mem_ctx = talloc_init("privilege set"); - ALLOC_CHECK(mem_ctx, ret, done, "init_privilege"); + int i; + + for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) { + mask->mask[i] |= addpriv->mask[i]; + } +} + +/*************************************************************************** + remove one SE_PRIV sytucture from another and store the resulting set + in mew_mask +****************************************************************************/ + +static void se_priv_remove( SE_PRIV *mask, const SE_PRIV *removepriv ) +{ + int i; + + for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) { + mask->mask[i] &= ~removepriv->mask[i]; + } +} - *priv_set = TALLOC_ZERO_P(mem_ctx, PRIVILEGE_SET); - ALLOC_CHECK(*priv_set, ret, done, "init_privilege"); +/*************************************************************************** + invert a given SE_PRIV and store the set in new_mask +****************************************************************************/ - (*priv_set)->mem_ctx = mem_ctx; +static void se_priv_invert( SE_PRIV *new_mask, const SE_PRIV *mask ) +{ + SE_PRIV allprivs; + + se_priv_copy( &allprivs, &se_priv_all ); + se_priv_remove( &allprivs, mask ); + se_priv_copy( new_mask, &allprivs ); +} - ret = NT_STATUS_OK; +/*************************************************************************** + check if 2 SE_PRIV structure are equal +****************************************************************************/ -done: - return ret; +static BOOL se_priv_equal( const SE_PRIV *mask1, const SE_PRIV *mask2 ) +{ + return ( memcmp(mask1, mask2, sizeof(SE_PRIV)) == 0 ); } -NTSTATUS init_priv_with_ctx(TALLOC_CTX *mem_ctx, PRIVILEGE_SET **priv_set) + +/*************************************************************************** + dump an SE_PRIV structure to the log files +****************************************************************************/ + +void dump_se_priv( int dbg_cl, int dbg_lvl, const SE_PRIV *mask ) { - NTSTATUS ret; + int i; + + DEBUGADDC( dbg_cl, dbg_lvl,("SE_PRIV ")); + + for ( i=0; i<SE_PRIV_MASKSIZE; i++ ) { + DEBUGADDC( dbg_cl, dbg_lvl,(" 0x%x", mask->mask[i] )); + } + + DEBUGADDC( dbg_cl, dbg_lvl, ("\n")); +} - *priv_set = TALLOC_ZERO_P(mem_ctx, PRIVILEGE_SET); - ALLOC_CHECK(*priv_set, ret, done, "init_privilege"); +/*************************************************************************** + Retrieve the privilege mask (set) for a given SID +****************************************************************************/ - (*priv_set)->mem_ctx = mem_ctx; - (*priv_set)->ext_ctx = True; +static BOOL get_privileges( const DOM_SID *sid, SE_PRIV *mask ) +{ + TDB_CONTEXT *tdb = get_account_pol_tdb(); + fstring keystr; + TDB_DATA key, data; - ret = NT_STATUS_OK; + /* Fail if the admin has not enable privileges */ + + if ( !lp_enable_privileges() ) { + return False; + } + + if ( !tdb ) + return False; -done: - return ret; + /* PRIV_<SID> (NULL terminated) as the key */ + + fstr_sprintf( keystr, "%s%s", PRIVPREFIX, sid_string_static(sid) ); + key.dptr = keystr; + key.dsize = strlen(keystr) + 1; + + data = tdb_fetch( tdb, key ); + + if ( !data.dptr ) { + DEBUG(3,("get_privileges: No privileges assigned to SID [%s]\n", + sid_string_static(sid))); + return False; + } + + SMB_ASSERT( data.dsize == sizeof( SE_PRIV ) ); + + se_priv_copy( mask, (SE_PRIV*)data.dptr ); + + + return True; } -void reset_privilege(PRIVILEGE_SET *priv_set) +/*************************************************************************** + Store the privilege mask (set) for a given SID +****************************************************************************/ + +static BOOL set_privileges( const DOM_SID *sid, SE_PRIV *mask ) { - priv_set->count = 0; - priv_set->control = 0; - priv_set->set = NULL; + TDB_CONTEXT *tdb = get_account_pol_tdb(); + fstring keystr; + TDB_DATA key, data; + + if ( !tdb ) + return False; + + /* PRIV_<SID> (NULL terminated) as the key */ + + fstr_sprintf( keystr, "%s%s", PRIVPREFIX, sid_string_static(sid) ); + key.dptr = keystr; + key.dsize = strlen(keystr) + 1; + + /* no packing. static size structure, just write it out */ + + data.dptr = (char*)mask; + data.dsize = sizeof(SE_PRIV); + + return ( tdb_store(tdb, key, data, TDB_REPLACE) != -1 ); } -void destroy_privilege(PRIVILEGE_SET **priv_set) +/**************************************************************************** + check if the privilege is in the privilege list +****************************************************************************/ + +static BOOL is_privilege_assigned( SE_PRIV *privileges, SE_PRIV *check ) { - reset_privilege(*priv_set); - if (!((*priv_set)->ext_ctx)) - /* mem_ctx is local, destroy it */ - talloc_destroy((*priv_set)->mem_ctx); - *priv_set = NULL; + SE_PRIV p1, p2; + + if ( !privileges || !check ) + return False; + + se_priv_copy( &p1, check ); + + /* invert the SE_PRIV we want to check for and remove that from the + original set. If we are left with the SE_PRIV we are checking + for then return True */ + + se_priv_invert( &p1, check ); + se_priv_copy( &p2, privileges ); + se_priv_remove( &p2, &p1 ); + + return se_priv_equal( &p2, check ); } /**************************************************************************** add a privilege to a privilege array ****************************************************************************/ -NTSTATUS add_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set) + +static BOOL privilege_set_add(PRIVILEGE_SET *priv_set, LUID_ATTR set) { - NTSTATUS ret; LUID_ATTR *new_set; - /* check if the privilege is not already in the list */ - if (NT_STATUS_IS_OK(check_priv_in_privilege(priv_set, set))) - return NT_STATUS_UNSUCCESSFUL; - /* 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); - ALLOC_CHECK(new_set, ret, done, "add_privilege"); + if ( !new_set ) { + DEBUG(0,("privilege_set_add: failed to allocate memory!\n")); + return False; + } new_set[priv_set->count].luid.high = set.luid.high; new_set[priv_set->count].luid.low = set.luid.low; @@ -164,187 +292,470 @@ NTSTATUS add_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set) priv_set->count++; priv_set->set = new_set; - ret = NT_STATUS_OK; + return True; +} + +/********************************************************************* + Generate the LUID_ATTR structure based on a bitmask +*********************************************************************/ + +LUID_ATTR get_privilege_luid( SE_PRIV *mask ) +{ + LUID_ATTR priv_luid; + int i; -done: - return ret; + priv_luid.attr = 0; + priv_luid.luid.high = 0; + + for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) { + + /* just use the index+1 (so its non-zero) into the + array as the lower portion of the LUID */ + + if ( se_priv_equal( &privs[i].se_priv, mask ) ) { + priv_luid.luid.low = GENERATE_LUID_LOW(i); + } + } + + return priv_luid; } -/**************************************************************************** - add all the privileges to a privilege array - ****************************************************************************/ -NTSTATUS add_all_privilege(PRIVILEGE_SET *priv_set) +/********************************************************************* + Generate the LUID_ATTR structure based on a bitmask +*********************************************************************/ + +const char* get_privilege_dispname( const char *name ) { - NTSTATUS result = NT_STATUS_OK; - LUID_ATTR set; + int i; - set.attr = 0; - set.luid.high = 0; + for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) { + + if ( strequal( privs[i].name, name ) ) { + return privs[i].description; + } + } + + return NULL; +} + +/********************************************************************* + get a list of all privleges for all sids the in list +*********************************************************************/ + +BOOL get_privileges_for_sids(SE_PRIV *privileges, DOM_SID *slist, int scount) +{ + SE_PRIV mask; + int i; + BOOL found = False; - /* TODO: set a proper list of privileges */ - set.luid.low = SE_PRIV_ADD_USERS; - result = add_privilege(priv_set, set); - NTSTATUS_CHECK(result, done, "add_all_privilege", "add_privilege"); + se_priv_copy( privileges, &se_priv_none ); + + for ( i=0; i<scount; i++ ) { + /* don't add unless we actually have a privilege assigned */ - set.luid.low = SE_PRIV_ADD_MACHINES; - result = add_privilege(priv_set, set); - NTSTATUS_CHECK(result, done, "add_all_privilege", "add_privilege"); + if ( !get_privileges( &slist[i], &mask ) ) + continue; - set.luid.low = SE_PRIV_PRINT_OPERATOR; - result = add_privilege(priv_set, set); - NTSTATUS_CHECK(result, done, "add_all_privilege", "add_privilege"); + DEBUG(5,("get_privileges_for_sids: sid = %s\nPrivilege set:\n", + sid_string_static(&slist[i]))); + dump_se_priv( DBGC_ALL, 5, &mask ); + + se_priv_add( privileges, &mask ); + found = True; + } - return result; + return found; } -/**************************************************************************** - check if the privilege list is empty - ****************************************************************************/ -NTSTATUS check_empty_privilege(PRIVILEGE_SET *priv_set) + +/********************************************************************* + travseral functions for privilege_enumerate_accounts +*********************************************************************/ + +static int priv_traverse_fn(TDB_CONTEXT *t, TDB_DATA key, TDB_DATA data, void *state) { - if (!priv_set) - return NT_STATUS_INVALID_PARAMETER; + PRIV_SID_LIST *priv = state; + int prefixlen = strlen(PRIVPREFIX); + DOM_SID sid; + fstring sid_string; + + /* easy check first */ + + if ( data.dsize != sizeof(SE_PRIV) ) + return 0; - if (priv_set->count == 0) - return NT_STATUS_OK; + /* check we have a PRIV_+SID entry */ + + if ( strncmp(key.dptr, PRIVPREFIX, prefixlen) != 0) + return 0; + + /* check to see if we are looking for a particular privilege */ - return NT_STATUS_UNSUCCESSFUL; + if ( !se_priv_equal(&priv->privilege, &se_priv_none) ) { + SE_PRIV mask; + + se_priv_copy( &mask, (SE_PRIV*)data.dptr ); + + /* if the SID does not have the specified privilege + then just return */ + + if ( !is_privilege_assigned( &mask, &priv->privilege) ) + return 0; + } + + fstrcpy( sid_string, &key.dptr[strlen(PRIVPREFIX)] ); + + if ( !string_to_sid(&sid, sid_string) ) { + DEBUG(0,("travsersal_fn_enum__acct: Could not convert SID [%s]\n", + sid_string)); + return 0; + } + + add_sid_to_array( &sid, &priv->sids.list, &priv->sids.count ); + + return 0; } -/**************************************************************************** - check if the privilege is in the privilege list - ****************************************************************************/ -NTSTATUS check_priv_in_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set) +/********************************************************************* + Retreive list of privileged SIDs (for _lsa_enumerate_accounts() +*********************************************************************/ + +NTSTATUS privilege_enumerate_accounts(DOM_SID **sids, int *num_sids) +{ + TDB_CONTEXT *tdb = get_account_pol_tdb(); + PRIV_SID_LIST priv; + + ZERO_STRUCT(priv); + + se_priv_copy( &priv.privilege, &se_priv_none ); + + tdb_traverse( tdb, priv_traverse_fn, &priv); + + /* give the memory away; caller will free */ + + *sids = priv.sids.list; + *num_sids = priv.sids.count; + + return NT_STATUS_OK; +} + +/*************************************************************************** + Add privilege to sid +****************************************************************************/ + +BOOL grant_privilege(const DOM_SID *sid, SE_PRIV *priv_mask) +{ + SE_PRIV old_mask, new_mask; + + if ( get_privileges( sid, &old_mask ) ) + se_priv_copy( &new_mask, &old_mask ); + else + se_priv_copy( &new_mask, &se_priv_none ); + + se_priv_add( &new_mask, priv_mask ); + + DEBUG(10,("grant_privilege: %s\n", sid_string_static(sid))); + + DEBUGADD( 10, ("original privilege mask:\n")); + dump_se_priv( DBGC_ALL, 10, &old_mask ); + + DEBUGADD( 10, ("new privilege mask:\n")); + dump_se_priv( DBGC_ALL, 10, &new_mask ); + + return set_privileges( sid, &new_mask ); +} + +/********************************************************************* + Add a privilege based on its name +*********************************************************************/ + +BOOL grant_privilege_by_name(DOM_SID *sid, const char *name) { int i; - if (!priv_set) - return NT_STATUS_INVALID_PARAMETER; + for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) { + if ( strequal(privs[i].name, name) ) { + return grant_privilege( sid, &privs[i].se_priv ); + } + } - /* if the list is empty, obviously we can't have it */ - if (NT_STATUS_IS_OK(check_empty_privilege(priv_set))) - return NT_STATUS_UNSUCCESSFUL; + DEBUG(3, ("grant_privilege_by_name: No Such Privilege Found (%s)\n", name)); - for (i = 0; i < priv_set->count; i++) { - LUID_ATTR *cur_set; + return False; +} - 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 NT_STATUS_OK; - } - } +/*************************************************************************** + Remove privilege from sid +****************************************************************************/ + +BOOL revoke_privilege(const DOM_SID *sid, SE_PRIV *priv_mask) +{ + SE_PRIV mask; + + /* if the user has no privileges, then we can't revoke any */ + + if ( !get_privileges( sid, &mask ) ) + return True; + + DEBUG(10,("revoke_privilege: %s\n", sid_string_static(sid))); + + DEBUGADD( 10, ("original privilege mask:\n")); + dump_se_priv( DBGC_ALL, 10, &mask ); - return NT_STATUS_UNSUCCESSFUL; + se_priv_remove( &mask, priv_mask ); + + DEBUGADD( 10, ("new privilege mask:\n")); + dump_se_priv( DBGC_ALL, 10, &mask ); + + return set_privileges( sid, &mask ); } -/**************************************************************************** - remove a privilege from a privilege array - ****************************************************************************/ -NTSTATUS remove_privilege(PRIVILEGE_SET *priv_set, LUID_ATTR set) +/********************************************************************* + Revoke all privileges +*********************************************************************/ + +BOOL revoke_all_privileges( DOM_SID *sid ) { - NTSTATUS ret; - LUID_ATTR *new_set; - LUID_ATTR *old_set; - int i,j; + return revoke_privilege( sid, &se_priv_all ); +} - if (!priv_set) - return NT_STATUS_INVALID_PARAMETER; +/********************************************************************* + Add a privilege based on its name +*********************************************************************/ - /* check if the privilege is in the list */ - if (!NT_STATUS_IS_OK(check_priv_in_privilege(priv_set, set))) - return NT_STATUS_UNSUCCESSFUL; +BOOL revoke_privilege_by_name(DOM_SID *sid, const char *name) +{ + int i; - /* special case if it's the only privilege in the list */ - if (priv_set->count == 1) { - reset_privilege(priv_set); - return NT_STATUS_OK; - } + for ( i=0; !se_priv_equal(&privs[i].se_priv, &se_priv_end); i++ ) { + if ( strequal(privs[i].name, name) ) { + return revoke_privilege( sid, &privs[i].se_priv ); + } + } - /* - * the privilege is there, create a new list, - * and copy the other privileges - */ + DEBUG(3, ("revoke_privilege_by_name: No Such Privilege Found (%s)\n", name)); - old_set = priv_set->set; + return False; +} - new_set = TALLOC_ARRAY(priv_set->mem_ctx, LUID_ATTR, priv_set->count - 1); - ALLOC_CHECK(new_set, ret, done, "remove_privilege"); +/*************************************************************************** + Retrieve the SIDs assigned to a given privilege +****************************************************************************/ - 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; +NTSTATUS privilege_create_account(const DOM_SID *sid ) +{ + return ( grant_privilege(sid, &se_priv_none) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL); +} - j++; - } +/**************************************************************************** + initialise a privilege list and set the talloc context + ****************************************************************************/ +NTSTATUS privilege_set_init(PRIVILEGE_SET *priv_set) +{ + TALLOC_CTX *mem_ctx; - 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)); - return NT_STATUS_INTERNAL_ERROR; + ZERO_STRUCTP( priv_set ); + + mem_ctx = talloc_init("privilege set"); + if ( !mem_ctx ) { + DEBUG(0,("privilege_set_init: failed to initialize talloc ctx!\n")); + return NT_STATUS_NO_MEMORY; } - - /* ok everything is fine */ - - priv_set->count--; - priv_set->set = new_set; + + priv_set->mem_ctx = mem_ctx; + + return NT_STATUS_OK; +} + +/**************************************************************************** + initialise a privilege list and with someone else's talloc context +****************************************************************************/ + +NTSTATUS privilege_set_init_by_ctx(TALLOC_CTX *mem_ctx, PRIVILEGE_SET *priv_set) +{ + ZERO_STRUCTP( priv_set ); - ret = NT_STATUS_OK; + priv_set->mem_ctx = mem_ctx; + priv_set->ext_ctx = True; -done: - return ret; + return NT_STATUS_OK; } /**************************************************************************** - duplicates a privilege array - the new privilege set must be passed inited - (use init_privilege or init_priv_with_ctx) + Free all memory used by a PRIVILEGE_SET +****************************************************************************/ + +void privilege_set_free(PRIVILEGE_SET *priv_set) +{ + if ( !priv_set ) + return; + + if ( !( priv_set->ext_ctx ) ) + talloc_destroy( priv_set->mem_ctx ); + + ZERO_STRUCTP( priv_set ); +} + +/**************************************************************************** + duplicate alloc luid_attr ****************************************************************************/ -NTSTATUS dup_priv_set(PRIVILEGE_SET *new_priv_set, PRIVILEGE_SET *priv_set) + +NTSTATUS dup_luid_attr(TALLOC_CTX *mem_ctx, LUID_ATTR **new_la, LUID_ATTR *old_la, int count) { - NTSTATUS ret; - LUID_ATTR *new_set; - LUID_ATTR *old_set; int i; - if (!new_priv_set || !priv_set) - return NT_STATUS_INVALID_PARAMETER; + /* don't crash if the source pointer is NULL (since we don't + do priviledges now anyways) */ - /* special case if there are no privileges in the list */ - if (priv_set->count == 0) { + if ( !old_la ) return NT_STATUS_OK; + + *new_la = TALLOC_ARRAY(mem_ctx, LUID_ATTR, count); + if ( !*new_la ) { + DEBUG(0,("dup_luid_attr: failed to alloc new LUID_ATTR array [%d]\n", count)); + return NT_STATUS_NO_MEMORY; + } + + for (i=0; i<count; i++) { + (*new_la)[i].luid.high = old_la[i].luid.high; + (*new_la)[i].luid.low = old_la[i].luid.low; + (*new_la)[i].attr = old_la[i].attr; } + + return NT_STATUS_OK; +} + +/**************************************************************************** + Does the user have the specified privilege ? We only deal with one privilege + at a time here. +*****************************************************************************/ - /* - * create a new list, - * and copy the other privileges - */ +BOOL user_has_privileges(NT_USER_TOKEN *token, SE_PRIV *privilege) +{ + if ( !token ) + return False; + + return is_privilege_assigned( &token->privileges, privilege ); +} - old_set = priv_set->set; +/**************************************************************************** + Convert a LUID to a named string +****************************************************************************/ - new_set = TALLOC_ARRAY(new_priv_set->mem_ctx, LUID_ATTR, priv_set->count - 1); - ALLOC_CHECK(new_set, ret, done, "dup_priv_set"); +char* luid_to_privilege_name(const LUID *set) +{ + static fstring name; + int max = count_all_privileges(); + + if (set->high != 0) + return NULL; + + if ( set->low > max ) + return NULL; + + fstrcpy( name, privs[set->low - 1].name ); + + return name; +} + +/**************************************************************************** + Convert an LUID to a 32-bit mask +****************************************************************************/ + +SE_PRIV* luid_to_privilege_mask(const LUID *set) +{ + static SE_PRIV mask; + int max = count_all_privileges(); + + if (set->high != 0) + return NULL; + + if ( set->low > max ) + return NULL; + + se_priv_copy( &mask, &privs[set->low - 1].se_priv ); + + return &mask; +} - for (i=0; i < priv_set->count; i++) { +/******************************************************************* + return the number of elements in the privlege array +*******************************************************************/ + +int count_all_privileges( void ) +{ + static int count; + + if ( count ) + return count; + + /* loop over the array and count it */ + for ( count=0; !se_priv_equal(&privs[count].se_priv, &se_priv_end); count++ ) ; + + return count; +} + +/******************************************************************* +*******************************************************************/ + +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; - new_set[i].luid.low = old_set[i].luid.low; - new_set[i].luid.high = old_set[i].luid.high; - new_set[i].attr = old_set[i].attr; + luid.luid.low = GENERATE_LUID_LOW(i); + + if ( !privilege_set_add( set, luid ) ) + return False; } - - new_priv_set->count = priv_set->count; - new_priv_set->control = priv_set->control; - new_priv_set->set = new_set; + + return True; +} + +/******************************************************************* +*******************************************************************/ + +BOOL privilege_set_to_se_priv( SE_PRIV *mask, PRIVILEGE_SET *privset ) +{ + int i; + uint32 num_privs = count_all_privileges(); + + ZERO_STRUCTP( mask ); - ret = NT_STATUS_OK; + 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; + + /* make sure :LUID.low is in range */ + if ( privset->set[i].luid.low == 0 || privset->set[i].luid.low > num_privs ) + return False; + + r = privs[privset->set[i].luid.low - 1].se_priv; + se_priv_add( mask, &r ); + } + + return True; +} -done: - return ret; +/******************************************************************* +*******************************************************************/ + +BOOL is_privileged_sid( DOM_SID *sid ) +{ + SE_PRIV mask; + + return get_privileges( sid, &mask ); } |