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/*
Unix SMB/CIFS implementation.
server side dcerpc handle code
Copyright (C) Andrew Tridgell 2003
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"
/*
allocate a new rpc handle
*/
struct dcesrv_handle *dcesrv_handle_new(struct dcesrv_state *dce,
uint8 handle_type)
{
TALLOC_CTX *mem_ctx;
struct dcesrv_handle *h;
mem_ctx = talloc_init("rpc handle type %d\n", handle_type);
if (!mem_ctx) {
return NULL;
}
h = talloc(mem_ctx, sizeof(*h));
if (!h) {
talloc_destroy(mem_ctx);
return NULL;
}
h->mem_ctx = mem_ctx;
h->data = NULL;
memset(h->wire_handle.data, 'H', sizeof(h->wire_handle.data));
strncpy(h->wire_handle.data, dce->ndr->name, 11);
h->wire_handle.data[11] = handle_type;
/* TODO: check for wraparound here */
SIVAL(&h->wire_handle.data, 12, random());
SIVAL(&h->wire_handle.data, 16, dce->next_handle);
dce->next_handle++;
DLIST_ADD(dce->handles, h);
return h;
}
/*
destroy a rpc handle
*/
void dcesrv_handle_destroy(struct dcesrv_state *dce,
struct dcesrv_handle *h)
{
DLIST_REMOVE(dce->handles, h);
talloc_destroy(h->mem_ctx);
}
/*
find an internal handle given a wire handle. If the wire handle is NULL then
allocate a new handle
*/
struct dcesrv_handle *dcesrv_handle_fetch(struct dcesrv_state *dce,
struct policy_handle *p,
uint8 handle_type)
{
struct dcesrv_handle *h;
if (all_zero(p->data, sizeof(p->data))) {
return dcesrv_handle_new(dce, handle_type);
}
for (h=dce->handles; h; h=h->next) {
if (memcmp(h->wire_handle.data, p->data, sizeof(p->data)) == 0) {
return h;
}
}
return NULL;
}
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