/*
- * Unix SMB/Netbios implementation.
- * Version 1.9.
+ * Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-1997,
* Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
*
* 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
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-extern int DEBUGLEVEL;
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
+
+/*
+ * Handle database - stored per pipe.
+ */
+
+struct policy {
+ struct policy *next, *prev;
+
+ struct policy_handle pol_hnd;
+
+ void *data_ptr;
+};
+
+struct handle_list {
+ struct policy *Policy; /* List of policies. */
+ size_t count; /* Current number of handles. */
+ size_t pipe_ref_count; /* Number of pipe handles referring to this list. */
+};
/* This is the max handles across all instances of a pipe name. */
#ifndef MAX_OPEN_POLS
#define MAX_OPEN_POLS 1024
#endif
+/****************************************************************************
+ Hack as handles need to be persisant over lsa pipe closes so long as a samr
+ pipe is open. JRA.
+****************************************************************************/
+
+static bool is_samr_lsa_pipe(const struct ndr_syntax_id *syntax)
+{
+ return (ndr_syntax_id_equal(syntax, &ndr_table_samr.syntax_id)
+ || ndr_syntax_id_equal(syntax, &ndr_table_lsarpc.syntax_id));
+}
+
+size_t num_pipe_handles(struct handle_list *list)
+{
+ if (list == NULL) {
+ return 0;
+ }
+ return list->count;
+}
+
/****************************************************************************
Initialise a policy handle list on a pipe. Handle list is shared between all
pipes of the same name.
****************************************************************************/
-BOOL init_pipe_handle_list(pipes_struct *p, char *pipe_name)
+bool init_pipe_handle_list(pipes_struct *p, const struct ndr_syntax_id *syntax)
{
- pipes_struct *plist = get_first_pipe();
- struct handle_list *hl = NULL;
-
- for (plist = get_first_pipe(); plist; plist = get_next_pipe(plist)) {
- if (strequal( plist->name, 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;
+ pipes_struct *plist;
+ struct handle_list *hl;
+
+ for (plist = get_first_internal_pipe();
+ plist;
+ plist = get_next_internal_pipe(plist)) {
+ if (ndr_syntax_id_equal(syntax, &plist->syntax)) {
+ break;
+ }
+ if (is_samr_lsa_pipe(&plist->syntax)
+ && is_samr_lsa_pipe(syntax)) {
+ /*
+ * samr and lsa share a handle space (same process
+ * under Windows?)
+ */
break;
}
}
- if (!hl) {
+ if (plist != NULL) {
+ hl = plist->pipe_handles;
+ if (hl == NULL) {
+ return false;
+ }
+ } else {
/*
- * No handle list for this pipe (first open of pipe).
- * Create list.
+ * First open, we have to create the handle list
*/
-
- if ((hl = (struct handle_list *)malloc(sizeof(struct handle_list))) == NULL)
- return False;
+ hl = SMB_MALLOC_P(struct handle_list);
+ if (hl == NULL) {
+ return false;
+ }
ZERO_STRUCTP(hl);
- DEBUG(10,("init_pipe_handles: created handle list for pipe %s\n", pipe_name ));
+ DEBUG(10,("init_pipe_handles: created handle list for "
+ "pipe %s\n", get_pipe_name_from_iface(syntax)));
}
/*
p->pipe_handles = hl;
- DEBUG(10,("init_pipe_handles: pipe_handles ref count = %u for pipe %s\n",
- p->pipe_handles->pipe_ref_count, pipe_name ));
+ DEBUG(10,("init_pipe_handles: pipe_handles ref count = %lu for pipe %s\n",
+ (unsigned long)p->pipe_handles->pipe_ref_count,
+ get_pipe_name_from_iface(syntax)));
return True;
}
/****************************************************************************
find first available policy slot. creates a policy handle for you.
+
+ If "data_ptr" is given, this must be a talloc'ed object, create_policy_hnd
+ talloc_moves this into the handle. If the policy_hnd is closed,
+ data_ptr is TALLOC_FREE()'ed
****************************************************************************/
-BOOL create_policy_hnd(pipes_struct *p, POLICY_HND *hnd, void (*free_fn)(void *), void *data_ptr)
+bool create_policy_hnd(pipes_struct *p, struct policy_handle *hnd, void *data_ptr)
{
static uint32 pol_hnd_low = 0;
static uint32 pol_hnd_high = 0;
+ time_t t = time(NULL);
struct policy *pol;
return False;
}
- pol = (struct policy *)malloc(sizeof(*p));
+ pol = TALLOC_ZERO_P(NULL, struct policy);
if (!pol) {
DEBUG(0,("create_policy_hnd: ERROR: out of memory!\n"));
return False;
}
- ZERO_STRUCTP(pol);
+ if (data_ptr != NULL) {
+ pol->data_ptr = talloc_move(pol, &data_ptr);
+ }
+
+ 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 */
- pol->data_ptr = data_ptr;
- pol->free_fn = free_fn;
+ /* split the current time into two 16 bit values */
- pol_hnd_low++;
- if (pol_hnd_low == 0) (pol_hnd_high)++;
+ 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.data1, 0 , 0); /* first bit must be null */
- SIVAL(&pol->pol_hnd.data2, 0 , pol_hnd_low ); /* second bit is incrementing */
- SSVAL(&pol->pol_hnd.data3, 0 , pol_hnd_high); /* second bit is incrementing */
- SSVAL(&pol->pol_hnd.data4, 0 , (pol_hnd_high>>16)); /* second bit is incrementing */
- SIVAL(pol->pol_hnd.data5, 0, time(NULL)); /* something random */
- SIVAL(pol->pol_hnd.data5, 4, sys_getpid()); /* something more 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));
+ dump_data(4, (uint8 *)hnd, sizeof(*hnd));
return True;
}
find policy by handle - internal version.
****************************************************************************/
-static struct policy *find_policy_by_hnd_internal(pipes_struct *p, POLICY_HND *hnd, void **data_p)
+static struct policy *find_policy_by_hnd_internal(pipes_struct *p,
+ const struct policy_handle *hnd,
+ void **data_p)
{
struct policy *pol;
size_t i;
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));
+ dump_data(4, (uint8 *)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));
+ dump_data(4, (uint8 *)hnd, sizeof(*hnd));
+
+ p->bad_handle_fault_state = True;
return NULL;
}
find policy by handle
****************************************************************************/
-BOOL find_policy_by_hnd(pipes_struct *p, POLICY_HND *hnd, void **data_p)
+bool find_policy_by_hnd(pipes_struct *p, const struct policy_handle *hnd,
+ void **data_p)
{
return find_policy_by_hnd_internal(p, hnd, data_p) == NULL ? False : True;
}
Close a policy.
****************************************************************************/
-BOOL close_policy_hnd(pipes_struct *p, POLICY_HND *hnd)
+bool close_policy_hnd(pipes_struct *p, struct policy_handle *hnd)
{
struct policy *pol = find_policy_by_hnd_internal(p, hnd, NULL);
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);
-
- free(pol);
+ TALLOC_FREE(pol);
return True;
}
p->pipe_handles->Policy = NULL;
p->pipe_handles->count = 0;
- free(p->pipe_handles);
- p->pipe_handles = NULL;
- DEBUG(10,("close_policy_by_pipe: deleted handle list for pipe %s\n", p->name ));
+ SAFE_FREE(p->pipe_handles);
+ DEBUG(10,("close_policy_by_pipe: deleted handle list for "
+ "pipe %s\n", get_pipe_name_from_iface(&p->syntax)));
+ }
+}
+
+/*******************************************************************
+Shall we allow access to this rpc? Currently this function
+implements the 'restrict anonymous' setting by denying access to
+anonymous users if the restrict anonymous level is > 0. Further work
+will be checking a security descriptor to determine whether a user
+token has enough access to access the pipe.
+********************************************************************/
+
+bool pipe_access_check(pipes_struct *p)
+{
+ /* Don't let anonymous users access this RPC if restrict
+ anonymous > 0 */
+
+ if (lp_restrict_anonymous() > 0) {
+
+ /* schannel, so we must be ok */
+ if (p->pipe_bound && (p->auth.auth_type == PIPE_AUTH_TYPE_SCHANNEL)) {
+ return True;
+ }
+
+ if (p->server_info->guest) {
+ return False;
+ }
+ }
+
+ return True;
+}
+
+NTSTATUS _policy_handle_create(struct pipes_struct *p, struct policy_handle *hnd,
+ void *pdata, size_t data_size, const char *type)
+{
+ void **ppdata = (void **)pdata;
+ void *data;
+
+ if (p->pipe_handles->count > MAX_OPEN_POLS) {
+ DEBUG(0, ("policy_handle_create: ERROR: too many handles (%d) "
+ "on pipe %s.\n", (int)p->pipe_handles->count,
+ get_pipe_name_from_iface(&p->syntax)));
+ return NT_STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ data = talloc_size(talloc_tos(), data_size);
+ if (data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ talloc_set_name(data, type);
+
+ if (!create_policy_hnd(p, hnd, data)) {
+ TALLOC_FREE(data);
+ return NT_STATUS_NO_MEMORY;
+ }
+ *ppdata = data;
+ return NT_STATUS_OK;
+}
+
+void *_policy_handle_find(struct pipes_struct *p,
+ const struct policy_handle *hnd,
+ const char *name)
+{
+ void *data;
+
+ if (find_policy_by_hnd_internal(p, hnd, &data) == NULL) {
+ return NULL;
+ }
+ if (strcmp(name, talloc_get_name(data)) != 0) {
+ DEBUG(10, ("expected %s, got %s\n", name,
+ talloc_get_name(data)));
+ return NULL;
}
+ DEBUG(10, ("found handle of type %s\n", talloc_get_name(data)));
+ return data;
}
git.samba.org / ira / wip.git / blobdiff