rpc_server/srv_lsa_hnd.c

ソースコードを見る。

関数
static BOOL	is_samr_lsa_pipe (const char *pipe_name)
BOOL	init_pipe_handle_list (pipes_struct *p, char *pipe_name)
BOOL	create_policy_hnd (pipes_struct *p, POLICY_HND *hnd, void(*free_fn)(void *), void *data_ptr)
static struct policy *	find_policy_by_hnd_internal (pipes_struct *p, POLICY_HND *hnd, void **data_p)
BOOL	find_policy_by_hnd (pipes_struct *p, POLICY_HND *hnd, void **data_p)
BOOL	close_policy_hnd (pipes_struct *p, POLICY_HND *hnd)
void	close_policy_by_pipe (pipes_struct *p)
BOOL	pipe_access_check (pipes_struct *p)

---

関数

static BOOL is_samr_lsa_pipe

(

const char *

pipe_name

)

[static]

srv_lsa_hnd.c の 38 行で定義されています。

参照元 init_pipe_handle_list().

{
        return (strstr(pipe_name, "samr") || strstr(pipe_name, "lsa"));
}

BOOL init_pipe_handle_list	(	pipes_struct *	p,
		char *	pipe_name
	)

srv_lsa_hnd.c の 48 行で定義されています。

参照先 get_first_internal_pipe()・get_next_internal_pipe()・is_samr_lsa_pipe()・pipes_struct::name・pipes_struct::pipe_handles・handle_list::pipe_ref_count・smb_panic()・strequal().

参照元 make_internal_rpc_pipe_p().

{
        pipes_struct *plist = get_first_internal_pipe();
        struct handle_list *hl = NULL;

        for (plist = get_first_internal_pipe(); plist; plist = get_next_internal_pipe(plist)) {
                if (strequal( plist->name, pipe_name) ||
                                (is_samr_lsa_pipe(plist->name) && is_samr_lsa_pipe(pipe_name))) {
                        if (!plist->pipe_handles) {
                                pstring msg;
                                slprintf(msg, sizeof(msg)-1, "init_pipe_handles: NULL pipe_handle pointer in pipe %s",
                                                pipe_name );
                                smb_panic(msg);
                        }
                        hl = plist->pipe_handles;
                        break;
                }
        }

        if (!hl) {
                /*
                 * No handle list for this pipe (first open of pipe).
                 * Create list.
                 */

                if ((hl = SMB_MALLOC_P(struct handle_list)) == NULL)
                        return False;
                ZERO_STRUCTP(hl);

                DEBUG(10,("init_pipe_handles: created handle list for pipe %s\n", pipe_name ));
        }

        /*
         * One more pipe is using this list.
         */

        hl->pipe_ref_count++;

        /*
         * Point this pipe at this list.
         */

        p->pipe_handles = hl;

        DEBUG(10,("init_pipe_handles: pipe_handles ref count = %lu for pipe %s\n",
                  (unsigned long)p->pipe_handles->pipe_ref_count, pipe_name ));

        return True;
}

BOOL create_policy_hnd	(	pipes_struct *	p,
		POLICY_HND *	hnd,
		void(*)(void *)	free_fn,
		void *	data_ptr
	)

srv_lsa_hnd.c の 102 行で定義されています。

参照先 GUID::clock_seq・handle_list::count・dump_data()・policy_handle::handle_type・GUID::node・pipes_struct::pipe_handles・pol・handle_list::Policy・sys_getpid()・t・GUID::time_hi_and_version・GUID::time_low・GUID::time_mid・policy_handle::uuid.

参照元 _lsa_create_account()・_lsa_open_account()・_lsa_open_policy()・_lsa_open_policy2()・_samr_connect()・_samr_connect4()・_samr_connect5()・_samr_connect_anon()・_samr_create_dom_alias()・_samr_create_dom_group()・_samr_create_user()・_samr_open_alias()・_samr_open_domain()・_samr_open_group()・_samr_open_user()・create_open_service_handle()・elog_open()・open_printer_hnd()・open_registry_key().

{
        static uint32 pol_hnd_low  = 0;
        static uint32 pol_hnd_high = 0;
        time_t t = time(NULL);

        struct policy *pol;

        if (p->pipe_handles->count > MAX_OPEN_POLS) {
                DEBUG(0,("create_policy_hnd: ERROR: too many handles (%d) on this pipe.\n",
                                (int)p->pipe_handles->count));
                return False;
        }

        pol = SMB_MALLOC_P(struct policy);
        if (!pol) {
                DEBUG(0,("create_policy_hnd: ERROR: out of memory!\n"));
                return False;
        }

        ZERO_STRUCTP(pol);

        pol->data_ptr = data_ptr;
        pol->free_fn = free_fn;

        pol_hnd_low++;
        if (pol_hnd_low == 0)
                (pol_hnd_high)++;

        SIVAL(&pol->pol_hnd.handle_type, 0 , 0);  /* first bit must be null */
        SIVAL(&pol->pol_hnd.uuid.time_low, 0 , pol_hnd_low ); /* second bit is incrementing */
        SSVAL(&pol->pol_hnd.uuid.time_mid, 0 , pol_hnd_high); /* second bit is incrementing */
        SSVAL(&pol->pol_hnd.uuid.time_hi_and_version, 0 , (pol_hnd_high>>16)); /* second bit is incrementing */

        /* split the current time into two 16 bit values */

        SSVAL(pol->pol_hnd.uuid.clock_seq, 0, (t>>16)); /* something random */
        SSVAL(pol->pol_hnd.uuid.node, 0, t); /* something random */

        SIVAL(pol->pol_hnd.uuid.node, 2, sys_getpid()); /* something more random */

        DLIST_ADD(p->pipe_handles->Policy, pol);
        p->pipe_handles->count++;

        *hnd = pol->pol_hnd;
        
        DEBUG(4,("Opened policy hnd[%d] ", (int)p->pipe_handles->count));
        dump_data(4, (char *)hnd, sizeof(*hnd));

        return True;
}

static struct policy* find_policy_by_hnd_internal	(	pipes_struct *	p,
		POLICY_HND *	hnd,
		void **	data_p
	)			[static]

srv_lsa_hnd.c の 158 行で定義されています。

参照先 pipes_struct::bad_handle_fault_state・dump_data()・pipes_struct::pipe_handles・pol・handle_list::Policy.

参照元 close_policy_hnd()・find_policy_by_hnd().

{
        struct policy *pol;
        size_t i;

        if (data_p)
                *data_p = NULL;

        for (i = 0, pol=p->pipe_handles->Policy;pol;pol=pol->next, i++) {
                if (memcmp(&pol->pol_hnd, hnd, sizeof(*hnd)) == 0) {
                        DEBUG(4,("Found policy hnd[%d] ", (int)i));
                        dump_data(4, (char *)hnd, sizeof(*hnd));
                        if (data_p)
                                *data_p = pol->data_ptr;
                        return pol;
                }
        }

        DEBUG(4,("Policy not found: "));
        dump_data(4, (char *)hnd, sizeof(*hnd));

        p->bad_handle_fault_state = True;

        return NULL;
}

BOOL find_policy_by_hnd	(	pipes_struct *	p,
		POLICY_HND *	hnd,
		void **	data_p
	)

srv_lsa_hnd.c の 188 行で定義されています。

参照先 find_policy_by_hnd_internal().

参照元 _lsa_add_acct_rights()・_lsa_addprivs()・_lsa_close()・_lsa_create_account()・_lsa_enum_accounts()・_lsa_enum_acct_rights()・_lsa_enum_privs()・_lsa_enum_privsaccount()・_lsa_enum_trust_dom()・_lsa_getsystemaccount()・_lsa_lookup_names()・_lsa_lookup_names2()・_lsa_lookup_names3()・_lsa_lookup_priv_value()・_lsa_lookup_sids()・_lsa_lookup_sids2()・_lsa_open_account()・_lsa_priv_get_dispname()・_lsa_query_info()・_lsa_query_info2()・_lsa_query_secobj()・_lsa_remove_acct_rights()・_lsa_removeprivs()・_lsa_setsystemaccount()・_samr_enum_dom_aliases()・_samr_enum_dom_groups()・_samr_enum_dom_users()・_samr_enum_domains()・_samr_get_dispenum_index()・_samr_get_usrdom_pwinfo()・_samr_lookup_domain()・_samr_open_domain()・_samr_query_dispinfo()・_samr_query_domain_info()・_samr_query_useraliases()・_samr_query_userinfo()・_samr_set_dom_info()・find_eventlog_info_by_hnd()・find_printer_index_by_hnd()・find_regkey_index_by_hnd()・find_service_info_by_hnd()・get_lsa_policy_samr_sid().

{
        return find_policy_by_hnd_internal(p, hnd, data_p) == NULL ? False : True;
}

BOOL close_policy_hnd	(	pipes_struct *	p,
		POLICY_HND *	hnd
	)

srv_lsa_hnd.c の 197 行で定義されています。

参照先 handle_list::count・find_policy_by_hnd_internal()・pipes_struct::pipe_handles・pol・handle_list::Policy.

参照元 _lsa_close()・_samr_close_hnd()・_samr_delete_dom_alias()・_samr_delete_dom_group()・_samr_delete_dom_user()・_svcctl_close_service()・_svcctl_unlock_service_db()・close_policy_by_pipe()・close_printer_handle()・close_registry_key()・elog_close().

{
        struct policy *pol = find_policy_by_hnd_internal(p, hnd, NULL);

        if (!pol) {
                DEBUG(3,("Error closing policy\n"));
                return False;
        }

        DEBUG(3,("Closed policy\n"));

        if (pol->free_fn && pol->data_ptr)
                (*pol->free_fn)(pol->data_ptr);

        p->pipe_handles->count--;

        DLIST_REMOVE(p->pipe_handles->Policy, pol);

        ZERO_STRUCTP(pol);

        SAFE_FREE(pol);

        return True;
}

void close_policy_by_pipe

(

pipes_struct *

p

)

srv_lsa_hnd.c の 226 行で定義されています。

参照先 close_policy_hnd()・handle_list::count・pipes_struct::name・pipes_struct::pipe_handles・handle_list::pipe_ref_count・policy::pol_hnd・handle_list::Policy.

参照元 close_internal_rpc_pipe_hnd()・make_internal_rpc_pipe_p().

{
        p->pipe_handles->pipe_ref_count--;

        if (p->pipe_handles->pipe_ref_count == 0) {
                /*
                 * Last pipe open on this list - free the list.
                 */
                while (p->pipe_handles->Policy)
                        close_policy_hnd(p, &p->pipe_handles->Policy->pol_hnd);

                p->pipe_handles->Policy = NULL;
                p->pipe_handles->count = 0;

                SAFE_FREE(p->pipe_handles);
                DEBUG(10,("close_policy_by_pipe: deleted handle list for pipe %s\n", p->name ));
        }
}

BOOL pipe_access_check

(

pipes_struct *

p

)

srv_lsa_hnd.c の 253 行で定義されています。

参照先 pipes_struct::auth・pipe_auth_data::auth_type・get_valid_user_struct()・user_struct::guest・PIPE_AUTH_TYPE_SCHANNEL・pipes_struct::pipe_bound・pipes_struct::vuid.

参照元 _samr_connect()・_samr_connect4()・_samr_connect5()・_samr_connect_anon()・_samr_get_dom_pwinfo()・_srv_net_share_enum()・_srv_net_share_enum_all()・_srv_net_srv_get_info().

{
        /* Don't let anonymous users access this RPC if restrict
           anonymous > 0 */

        if (lp_restrict_anonymous() > 0) {
                user_struct *user = get_valid_user_struct(p->vuid);

                /* schannel, so we must be ok */
                if (p->pipe_bound && (p->auth.auth_type == PIPE_AUTH_TYPE_SCHANNEL)) {
                        return True;
                }

                if (!user) {
                        DEBUG(3, ("invalid vuid %d\n", p->vuid));
                        return False;
                }

                if (user->guest) {
                        return False;
                }
        }

        return True;
}

---