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/*
* Unix SMB/Netbios implementation.
* Version 1.9.
* 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
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* 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.
*/
#include "includes.h"
extern int DEBUGLEVEL;
/* This is the max handles per pipe. */
#ifndef MAX_OPEN_POLS
#define MAX_OPEN_POLS 256
#endif
/****************************************************************************
initialise policy handle states...
****************************************************************************/
void init_pipe_handles(pipes_struct *p)
{
p->pipe_handles.Policy = NULL;
p->pipe_handles.count = 0;
}
/****************************************************************************
find first available policy slot. creates a policy handle for you.
****************************************************************************/
BOOL create_policy_hnd(pipes_struct *p, POLICY_HND *hnd, void (*free_fn)(void *), void *data_ptr)
{
static uint32 pol_hnd_low = 0;
static uint32 pol_hnd_high = 0;
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 = (struct policy *)malloc(sizeof(*p));
if (!pol) {
DEBUG(0,("create_policy_hnd: ERROR: out of memory!\n"));
return False;
}
ZERO_STRUCTP(pol);
pol->p = p;
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.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 */
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;
}
/****************************************************************************
find policy by handle - internal version.
****************************************************************************/
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, (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));
return NULL;
}
/****************************************************************************
find policy by handle
****************************************************************************/
BOOL find_policy_by_hnd(pipes_struct *p, POLICY_HND *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)
{
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);
pol->p->pipe_handles.count--;
DLIST_REMOVE(pol->p->pipe_handles.Policy, pol);
ZERO_STRUCTP(pol);
free(pol);
return True;
}
/****************************************************************************
Close all the pipe handles.
****************************************************************************/
void close_policy_by_pipe(pipes_struct *p)
{
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;
}
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