-
/*
- * 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,
+ * Copyright (C) Jeremy Allison 2001.
*
* 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"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
-extern int DEBUGLEVEL;
-
+/* This is the max handles across all instances of a pipe name. */
#ifndef MAX_OPEN_POLS
-#define MAX_OPEN_POLS 64
+#define MAX_OPEN_POLS 1024
#endif
-struct reg_info
-{
- /* for use by \PIPE\winreg */
- fstring name; /* name of registry key */
-};
+/****************************************************************************
+ Hack as handles need to be persisant over lsa pipe closes so long as a samr
+ pipe is open. JRA.
+****************************************************************************/
-struct samr_info
+static bool is_samr_lsa_pipe(const char *pipe_name)
{
- /* for use by the \PIPE\samr policy */
- DOM_SID sid;
- uint32 rid; /* relative id associated with the pol_hnd */
- uint32 status; /* some sort of flag. best to record it. comes from opnum 0x39 */
-};
+ return (strstr(pipe_name, "samr") || strstr(pipe_name, "lsa"));
+}
+
+/****************************************************************************
+ Initialise a policy handle list on a pipe. Handle list is shared between all
+ pipes of the same name.
+****************************************************************************/
-static struct policy
+bool init_pipe_handle_list(pipes_struct *p, const char *pipe_name)
{
- struct policy *next, *prev;
- int pnum;
- BOOL open;
- POLICY_HND pol_hnd;
+ 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) {
+ char *msg;
+ if (asprintf(&msg, "init_pipe_handles: NULL "
+ "pipe_handle pointer in pipe %s",
+ pipe_name) != -1) {
+ smb_panic(msg);
+ } else {
+ smb_panic("init_pipe_handle_list");
+ }
+ }
+ hl = plist->pipe_handles;
+ break;
+ }
+ }
- union {
- struct samr_info samr;
- struct reg_info reg;
- } dev;
-} *Policy;
+ if (!hl) {
+ /*
+ * No handle list for this pipe (first open of pipe).
+ * Create list.
+ */
-static struct bitmap *bmap;
+ 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 ));
+ }
-/****************************************************************************
- create a unique policy handle
-****************************************************************************/
-static void create_pol_hnd(POLICY_HND *hnd)
-{
- static uint32 pol_hnd_low = 0;
- static uint32 pol_hnd_high = 0;
+ /*
+ * One more pipe is using this list.
+ */
- if (hnd == NULL) return;
+ hl->pipe_ref_count++;
- /* i severely doubt that pol_hnd_high will ever be non-zero... */
- pol_hnd_low++;
- if (pol_hnd_low == 0) pol_hnd_high++;
+ /*
+ * Point this pipe at this list.
+ */
- SIVAL(hnd->data, 0 , 0x0); /* first bit must be null */
- SIVAL(hnd->data, 4 , pol_hnd_low ); /* second bit is incrementing */
- SIVAL(hnd->data, 8 , pol_hnd_high); /* second bit is incrementing */
- SIVAL(hnd->data, 12, time(NULL)); /* something random */
- SIVAL(hnd->data, 16, getpid()); /* something more random */
-}
+ p->pipe_handles = hl;
-/****************************************************************************
- initialise policy handle states...
-****************************************************************************/
-void init_lsa_policy_hnd(void)
-{
- bmap = bitmap_allocate(MAX_OPEN_POLS);
- if (!bmap) {
- exit_server("out of memory in init_lsa_policy_hnd\n");
- }
+ 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;
}
/****************************************************************************
find first available policy slot. creates a policy handle for you.
****************************************************************************/
-BOOL open_lsa_policy_hnd(POLICY_HND *hnd)
+
+bool create_policy_hnd(pipes_struct *p, POLICY_HND *hnd, void (*free_fn)(void *), void *data_ptr)
{
- int i;
- struct policy *p;
+ static uint32 pol_hnd_low = 0;
+ static uint32 pol_hnd_high = 0;
+ time_t t = time(NULL);
- i = bitmap_find(bmap, 1);
+ struct policy *pol;
- if (i == -1) {
- DEBUG(0,("ERROR: out of Policy Handles!\n"));
+ 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;
}
- p = (struct policy *)malloc(sizeof(*p));
- if (!p) {
- DEBUG(0,("ERROR: out of memory!\n"));
+ pol = SMB_MALLOC_P(struct policy);
+ if (!pol) {
+ DEBUG(0,("create_policy_hnd: ERROR: out of memory!\n"));
return False;
}
- ZERO_STRUCTP(p);
+ ZERO_STRUCTP(pol);
+
+ pol->data_ptr = data_ptr;
+ pol->free_fn = free_fn;
- p->open = True;
- p->pnum = i;
+ 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 */
- create_pol_hnd(hnd);
- memcpy(&p->pol_hnd, hnd, sizeof(*hnd));
+ SSVAL(pol->pol_hnd.uuid.clock_seq, 0, (t>>16)); /* something random */
+ SSVAL(pol->pol_hnd.uuid.node, 0, t); /* something random */
- bitmap_set(bmap, i);
+ SIVAL(pol->pol_hnd.uuid.node, 2, sys_getpid()); /* something more random */
- DLIST_ADD(Policy, p);
+ DLIST_ADD(p->pipe_handles->Policy, pol);
+ p->pipe_handles->count++;
+
+ *hnd = pol->pol_hnd;
- DEBUG(4,("Opened policy hnd[%x] ", i));
- dump_data(4, (char *)hnd->data, sizeof(hnd->data));
+ DEBUG(4,("Opened policy hnd[%d] ", (int)p->pipe_handles->count));
+ dump_data(4, (uint8 *)hnd, sizeof(*hnd));
return True;
}
/****************************************************************************
- find policy by handle
+ find policy by handle - internal version.
****************************************************************************/
-static struct policy *find_lsa_policy(POLICY_HND *hnd)
-{
- struct policy *p;
- for (p=Policy;p;p=p->next) {
- if (memcmp(&p->pol_hnd, hnd, sizeof(*hnd)) == 0) {
- DEBUG(4,("Found policy hnd[%x] ", p->pnum));
- dump_data(4, (char *)hnd->data, sizeof(hnd->data));
- return p;
+static struct policy *find_policy_by_hnd_internal(pipes_struct *p, POLICY_HND *hnd, void **data_p)
+{
+ 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, (uint8 *)hnd, sizeof(*hnd));
+ if (data_p)
+ *data_p = pol->data_ptr;
+ return pol;
}
}
DEBUG(4,("Policy not found: "));
- dump_data(4, (char *)hnd->data, sizeof(hnd->data));
+ dump_data(4, (uint8 *)hnd, sizeof(*hnd));
+
+ p->bad_handle_fault_state = True;
return NULL;
}
/****************************************************************************
- find policy index by handle
+ find policy by handle
****************************************************************************/
-int find_lsa_policy_by_hnd(POLICY_HND *hnd)
-{
- struct policy *p = find_lsa_policy(hnd);
-
- return p?p->pnum:-1;
-}
-/****************************************************************************
- set samr rid
-****************************************************************************/
-BOOL set_lsa_policy_samr_rid(POLICY_HND *hnd, uint32 rid)
+bool find_policy_by_hnd(pipes_struct *p, POLICY_HND *hnd, void **data_p)
{
- struct policy *p = find_lsa_policy(hnd);
-
- if (p && p->open) {
- DEBUG(3,("Setting policy device rid=%x pnum=%x\n",
- rid, p->pnum));
-
- p->dev.samr.rid = rid;
- return True;
- }
-
- DEBUG(3,("Error setting policy rid=%x\n",rid));
- return False;
+ return find_policy_by_hnd_internal(p, hnd, data_p) == NULL ? False : True;
}
-
/****************************************************************************
- set samr pol status. absolutely no idea what this is.
+ Close a policy.
****************************************************************************/
-BOOL set_lsa_policy_samr_pol_status(POLICY_HND *hnd, uint32 pol_status)
-{
- struct policy *p = find_lsa_policy(hnd);
-
- if (p && p->open) {
- DEBUG(3,("Setting policy status=%x pnum=%x\n",
- pol_status, p->pnum));
-
- p->dev.samr.status = pol_status;
- return True;
- }
-
- DEBUG(3,("Error setting policy status=%x\n",
- pol_status));
- return False;
-}
-/****************************************************************************
- set samr sid
-****************************************************************************/
-BOOL set_lsa_policy_samr_sid(POLICY_HND *hnd, DOM_SID *sid)
+bool close_policy_hnd(pipes_struct *p, POLICY_HND *hnd)
{
- pstring sidstr;
- struct policy *p = find_lsa_policy(hnd);
-
- if (p && p->open) {
- DEBUG(3,("Setting policy sid=%s pnum=%x\n",
- sid_to_string(sidstr, sid), p->pnum));
+ struct policy *pol = find_policy_by_hnd_internal(p, hnd, NULL);
- memcpy(&p->dev.samr.sid, sid, sizeof(*sid));
- return True;
+ if (!pol) {
+ DEBUG(3,("Error closing policy\n"));
+ return False;
}
- DEBUG(3,("Error setting policy sid=%s\n",
- sid_to_string(sidstr, sid)));
- return False;
-}
-
-/****************************************************************************
- get samr sid
-****************************************************************************/
-BOOL get_lsa_policy_samr_sid(POLICY_HND *hnd, DOM_SID *sid)
-{
- struct policy *p = find_lsa_policy(hnd);
-
- if (p != NULL && p->open)
- {
- pstring sidstr;
- memcpy(sid, &p->dev.samr.sid, sizeof(*sid));
- DEBUG(3,("Getting policy sid=%s pnum=%x\n",
- sid_to_string(sidstr, sid), p->pnum));
+ DEBUG(3,("Closed policy\n"));
- return True;
- }
+ if (pol->free_fn && pol->data_ptr)
+ (*pol->free_fn)(pol->data_ptr);
- DEBUG(3,("Error getting policy\n"));
- return False;
-}
+ p->pipe_handles->count--;
-/****************************************************************************
- get samr rid
-****************************************************************************/
-uint32 get_lsa_policy_samr_rid(POLICY_HND *hnd)
-{
- struct policy *p = find_lsa_policy(hnd);
+ DLIST_REMOVE(p->pipe_handles->Policy, pol);
- if (p && p->open) {
- uint32 rid = p->dev.samr.rid;
- DEBUG(3,("Getting policy device rid=%x pnum=%x\n",
- rid, p->pnum));
+ ZERO_STRUCTP(pol);
- return rid;
- }
+ SAFE_FREE(pol);
- DEBUG(3,("Error getting policy\n"));
- return 0xffffffff;
+ return True;
}
/****************************************************************************
- set reg name
+ Close a pipe - free the handle list if it was the last pipe reference.
****************************************************************************/
-BOOL set_lsa_policy_reg_name(POLICY_HND *hnd, fstring name)
-{
- struct policy *p = find_lsa_policy(hnd);
-
- if (p && p->open)
- {
- DEBUG(3,("Getting policy pnum=%x\n",
- p->pnum));
-
- fstrcpy(p->dev.reg.name, name);
- return True;
- }
-
- DEBUG(3,("Error setting policy name=%s\n", name));
- return False;
-}
-/****************************************************************************
- set reg name
-****************************************************************************/
-BOOL get_lsa_policy_reg_name(POLICY_HND *hnd, fstring name)
+void close_policy_by_pipe(pipes_struct *p)
{
- struct policy *p = find_lsa_policy(hnd);
-
- if (p && p->open)
- {
- DEBUG(3,("Setting policy pnum=%x name=%s\n",
- p->pnum, name));
+ p->pipe_handles->pipe_ref_count--;
- fstrcpy(name, p->dev.reg.name);
- DEBUG(5,("getting policy reg name=%s\n", name));
- return True;
- }
+ 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);
- DEBUG(3,("Error getting policy reg name\n"));
- return False;
-}
+ p->pipe_handles->Policy = NULL;
+ p->pipe_handles->count = 0;
-/****************************************************************************
- close an lsa policy
-****************************************************************************/
-BOOL close_lsa_policy_hnd(POLICY_HND *hnd)
-{
- struct policy *p = find_lsa_policy(hnd);
-
- if (!p)
- {
- DEBUG(3,("Error closing policy\n"));
- return False;
+ SAFE_FREE(p->pipe_handles);
+ DEBUG(10,("close_policy_by_pipe: deleted handle list for pipe %s\n", p->name ));
}
+}
- DEBUG(3,("Closed policy name pnum=%x\n", p->pnum));
+/*******************************************************************
+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.
+********************************************************************/
- DLIST_REMOVE(Policy, p);
+bool pipe_access_check(pipes_struct *p)
+{
+ /* Don't let anonymous users access this RPC if restrict
+ anonymous > 0 */
- bitmap_clear(bmap, p->pnum);
+ if (lp_restrict_anonymous() > 0) {
- ZERO_STRUCTP(p);
- ZERO_STRUCTP(hnd);
+ /* schannel, so we must be ok */
+ if (p->pipe_bound && (p->auth.auth_type == PIPE_AUTH_TYPE_SCHANNEL)) {
+ return True;
+ }
- free(p);
+ if (p->server_info->guest) {
+ return False;
+ }
+ }
return True;
}
-
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