2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1997,
5 * Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
6 * Copyright (C) Jeremy Allison 2001.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /* This is the max handles across all instances of a pipe name. */
27 #define MAX_OPEN_POLS 1024
30 /****************************************************************************
31 Hack as handles need to be persisant over lsa pipe closes so long as a samr
33 ****************************************************************************/
35 static BOOL is_samr_lsa_pipe(const char *pipe_name)
37 return (strstr(pipe_name, "samr") || strstr(pipe_name, "lsa"));
40 /****************************************************************************
41 Initialise a policy handle list on a pipe. Handle list is shared between all
42 pipes of the same name.
43 ****************************************************************************/
45 BOOL init_pipe_handle_list(pipes_struct *p, char *pipe_name)
47 pipes_struct *plist = get_first_internal_pipe();
48 struct handle_list *hl = NULL;
50 for (plist = get_first_internal_pipe(); plist; plist = get_next_internal_pipe(plist)) {
51 if (strequal( plist->name, pipe_name) ||
52 (is_samr_lsa_pipe(plist->name) && is_samr_lsa_pipe(pipe_name))) {
53 if (!plist->pipe_handles) {
55 slprintf(msg, sizeof(msg)-1, "init_pipe_handles: NULL pipe_handle pointer in pipe %s",
59 hl = plist->pipe_handles;
66 * No handle list for this pipe (first open of pipe).
70 if ((hl = (struct handle_list *)malloc(sizeof(struct handle_list))) == NULL)
74 DEBUG(10,("init_pipe_handles: created handle list for pipe %s\n", pipe_name ));
78 * One more pipe is using this list.
84 * Point this pipe at this list.
89 DEBUG(10,("init_pipe_handles: pipe_handles ref count = %u for pipe %s\n",
90 p->pipe_handles->pipe_ref_count, pipe_name ));
95 /****************************************************************************
96 find first available policy slot. creates a policy handle for you.
97 ****************************************************************************/
99 BOOL create_policy_hnd(pipes_struct *p, POLICY_HND *hnd, void (*free_fn)(void *), void *data_ptr)
101 static uint32 pol_hnd_low = 0;
102 static uint32 pol_hnd_high = 0;
106 if (p->pipe_handles->count > MAX_OPEN_POLS) {
107 DEBUG(0,("create_policy_hnd: ERROR: too many handles (%d) on this pipe.\n",
108 (int)p->pipe_handles->count));
112 pol = (struct policy *)malloc(sizeof(*p));
114 DEBUG(0,("create_policy_hnd: ERROR: out of memory!\n"));
120 pol->data_ptr = data_ptr;
121 pol->free_fn = free_fn;
124 if (pol_hnd_low == 0)
127 SIVAL(&pol->pol_hnd.data1, 0 , 0); /* first bit must be null */
128 SIVAL(&pol->pol_hnd.data2, 0 , pol_hnd_low ); /* second bit is incrementing */
129 SSVAL(&pol->pol_hnd.data3, 0 , pol_hnd_high); /* second bit is incrementing */
130 SSVAL(&pol->pol_hnd.data4, 0 , (pol_hnd_high>>16)); /* second bit is incrementing */
131 SIVAL(pol->pol_hnd.data5, 0, time(NULL)); /* something random */
132 SIVAL(pol->pol_hnd.data5, 4, sys_getpid()); /* something more random */
134 DLIST_ADD(p->pipe_handles->Policy, pol);
135 p->pipe_handles->count++;
139 DEBUG(4,("Opened policy hnd[%d] ", (int)p->pipe_handles->count));
140 dump_data(4, (char *)hnd, sizeof(*hnd));
145 /****************************************************************************
146 find policy by handle - internal version.
147 ****************************************************************************/
149 static struct policy *find_policy_by_hnd_internal(pipes_struct *p, POLICY_HND *hnd, void **data_p)
157 for (i = 0, pol=p->pipe_handles->Policy;pol;pol=pol->next, i++) {
158 if (memcmp(&pol->pol_hnd, hnd, sizeof(*hnd)) == 0) {
159 DEBUG(4,("Found policy hnd[%d] ", (int)i));
160 dump_data(4, (char *)hnd, sizeof(*hnd));
162 *data_p = pol->data_ptr;
167 DEBUG(4,("Policy not found: "));
168 dump_data(4, (char *)hnd, sizeof(*hnd));
170 p->bad_handle_fault_state = True;
175 /****************************************************************************
176 find policy by handle
177 ****************************************************************************/
179 BOOL find_policy_by_hnd(pipes_struct *p, POLICY_HND *hnd, void **data_p)
181 return find_policy_by_hnd_internal(p, hnd, data_p) == NULL ? False : True;
184 /****************************************************************************
186 ****************************************************************************/
188 BOOL close_policy_hnd(pipes_struct *p, POLICY_HND *hnd)
190 struct policy *pol = find_policy_by_hnd_internal(p, hnd, NULL);
193 DEBUG(3,("Error closing policy\n"));
197 DEBUG(3,("Closed policy\n"));
199 if (pol->free_fn && pol->data_ptr)
200 (*pol->free_fn)(pol->data_ptr);
202 p->pipe_handles->count--;
204 DLIST_REMOVE(p->pipe_handles->Policy, pol);
213 /****************************************************************************
214 Close a pipe - free the handle list if it was the last pipe reference.
215 ****************************************************************************/
217 void close_policy_by_pipe(pipes_struct *p)
219 p->pipe_handles->pipe_ref_count--;
221 if (p->pipe_handles->pipe_ref_count == 0) {
223 * Last pipe open on this list - free the list.
225 while (p->pipe_handles->Policy)
226 close_policy_hnd(p, &p->pipe_handles->Policy->pol_hnd);
228 p->pipe_handles->Policy = NULL;
229 p->pipe_handles->count = 0;
231 SAFE_FREE(p->pipe_handles);
232 DEBUG(10,("close_policy_by_pipe: deleted handle list for pipe %s\n", p->name ));