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ffb8b50e3c
This will allow the NETLOGON server in the AD DC to declare that it does not use handles, and so allow some more flexibility with association groups Signed-off-by: Andrew Bartlett <abartlet@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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server side dcerpc handle code
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Copyright (C) Andrew Tridgell 2003
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "../lib/util/dlinklist.h"
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#include "rpc_server/dcerpc_server.h"
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#include "libcli/security/security.h"
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#include "auth/session.h"
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/*
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destroy a rpc handle
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*/
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static int dcesrv_handle_destructor(struct dcesrv_handle *h)
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{
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DLIST_REMOVE(h->assoc_group->handles, h);
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return 0;
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}
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/*
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allocate a new rpc handle
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*/
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_PUBLIC_ struct dcesrv_handle *dcesrv_handle_new(struct dcesrv_connection_context *context,
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uint8_t handle_type)
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{
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struct dcesrv_handle *h;
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struct dom_sid *sid;
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/*
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* For simplicty, ensure we abort here for an interface that has no handles (programmer error)
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*/
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SMB_ASSERT((context->iface->flags & DCESRV_INTERFACE_FLAGS_HANDLES_NOT_USED) == 0);
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sid = &context->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
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h = talloc_zero(context->conn->assoc_group, struct dcesrv_handle);
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if (!h) {
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return NULL;
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}
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h->data = NULL;
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h->sid = dom_sid_dup(h, sid);
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if (h->sid == NULL) {
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talloc_free(h);
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return NULL;
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}
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h->assoc_group = context->conn->assoc_group;
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h->iface = context->iface;
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h->wire_handle.handle_type = handle_type;
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h->wire_handle.uuid = GUID_random();
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DLIST_ADD(context->conn->assoc_group->handles, h);
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talloc_set_destructor(h, dcesrv_handle_destructor);
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return h;
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}
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/**
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find an internal handle given a wire handle. If the wire handle is NULL then
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allocate a new handle
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*/
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_PUBLIC_ struct dcesrv_handle *dcesrv_handle_fetch(
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struct dcesrv_connection_context *context,
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struct policy_handle *p,
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uint8_t handle_type)
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{
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struct dcesrv_handle *h;
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struct dom_sid *sid;
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/*
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* For simplicty, ensure we abort here for an interface that has no handles (programmer error)
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*/
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SMB_ASSERT((context->iface->flags & DCESRV_INTERFACE_FLAGS_HANDLES_NOT_USED) == 0);
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sid = &context->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
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if (ndr_policy_handle_empty(p)) {
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/* TODO: we should probably return a NULL handle here */
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return dcesrv_handle_new(context, handle_type);
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}
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for (h=context->conn->assoc_group->handles; h; h=h->next) {
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if (h->wire_handle.handle_type == p->handle_type &&
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GUID_equal(&p->uuid, &h->wire_handle.uuid)) {
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if (handle_type != DCESRV_HANDLE_ANY &&
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p->handle_type != handle_type) {
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DEBUG(0,("client gave us the wrong handle type (%d should be %d)\n",
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p->handle_type, handle_type));
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return NULL;
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}
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if (!dom_sid_equal(h->sid, sid)) {
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DEBUG(0,(__location__ ": Attempt to use invalid sid %s - %s\n",
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dom_sid_string(context, h->sid),
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dom_sid_string(context, sid)));
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return NULL;
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}
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if (h->iface != context->iface) {
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DEBUG(0,(__location__ ": Attempt to use invalid iface\n"));
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return NULL;
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}
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return h;
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}
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}
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return NULL;
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}
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