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a6034592fa
We just use NCACN_INTERNAL here... Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
1571 lines
37 KiB
C
1571 lines
37 KiB
C
/*
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Unix SMB/CIFS implementation.
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Samba internal messaging functions
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Copyright (C) Andrew Tridgell 2004
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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/events/events.h"
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#include "lib/util/server_id.h"
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#include "system/filesys.h"
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#include "messaging/messaging.h"
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#include "messaging/messaging_internal.h"
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#include "../lib/util/dlinklist.h"
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#include "lib/socket/socket.h"
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#include "librpc/gen_ndr/ndr_irpc.h"
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#include "lib/messaging/irpc.h"
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#include "../lib/util/unix_privs.h"
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#include "librpc/rpc/dcerpc.h"
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#include "cluster/cluster.h"
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#include "../lib/util/tevent_ntstatus.h"
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#include "lib/param/param.h"
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#include "lib/util/server_id_db.h"
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#include "lib/util/talloc_report_printf.h"
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#include "lib/messaging/messages_dgm.h"
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#include "lib/messaging/messages_dgm_ref.h"
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#include "../source3/lib/messages_util.h"
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#include <tdb.h>
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#include "lib/util/idtree.h"
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/* change the message version with any incompatible changes in the protocol */
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#define IMESSAGING_VERSION 1
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/*
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a pending irpc call
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*/
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struct irpc_request {
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struct irpc_request *prev, *next;
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struct imessaging_context *msg_ctx;
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int callid;
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struct {
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void (*handler)(struct irpc_request *irpc, struct irpc_message *m);
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void *private_data;
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} incoming;
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};
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/* we have a linked list of dispatch handlers for each msg_type that
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this messaging server can deal with */
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struct dispatch_fn {
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struct dispatch_fn *next, *prev;
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uint32_t msg_type;
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void *private_data;
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msg_callback_t fn;
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};
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/* an individual message */
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static void irpc_handler(struct imessaging_context *,
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void *,
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uint32_t,
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struct server_id,
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size_t,
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int *,
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DATA_BLOB *);
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/*
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A useful function for testing the message system.
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*/
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static void ping_message(struct imessaging_context *msg,
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void *private_data,
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uint32_t msg_type,
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struct server_id src,
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size_t num_fds,
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int *fds,
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DATA_BLOB *data)
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{
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struct server_id_buf idbuf;
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if (num_fds != 0) {
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DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
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return;
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}
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DEBUG(1,("INFO: Received PING message from server %s [%.*s]\n",
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server_id_str_buf(src, &idbuf), (int)data->length,
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data->data?(const char *)data->data:""));
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imessaging_send(msg, src, MSG_PONG, data);
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}
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static void pool_message(struct imessaging_context *msg,
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void *private_data,
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uint32_t msg_type,
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struct server_id src,
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size_t num_fds,
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int *fds,
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DATA_BLOB *data)
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{
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FILE *f = NULL;
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if (num_fds != 1) {
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DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
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return;
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}
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f = fdopen(fds[0], "w");
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if (f == NULL) {
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DBG_DEBUG("fopen failed: %s\n", strerror(errno));
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return;
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}
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talloc_full_report_printf(NULL, f);
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fclose(f);
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}
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static void ringbuf_log_msg(struct imessaging_context *msg,
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void *private_data,
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uint32_t msg_type,
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struct server_id src,
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size_t num_fds,
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int *fds,
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DATA_BLOB *data)
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{
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char *log = debug_get_ringbuf();
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size_t logsize = debug_get_ringbuf_size();
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DATA_BLOB blob;
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if (num_fds != 0) {
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DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
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return;
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}
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if (log == NULL) {
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log = discard_const_p(char, "*disabled*\n");
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logsize = strlen(log) + 1;
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}
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blob.data = (uint8_t *)log;
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blob.length = logsize;
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imessaging_send(msg, src, MSG_RINGBUF_LOG, &blob);
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}
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/****************************************************************************
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Receive a "set debug level" message.
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****************************************************************************/
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static void debug_imessage(struct imessaging_context *msg_ctx,
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void *private_data,
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uint32_t msg_type,
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struct server_id src,
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size_t num_fds,
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int *fds,
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DATA_BLOB *data)
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{
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const char *params_str = (const char *)data->data;
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struct server_id_buf src_buf;
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struct server_id dst = imessaging_get_server_id(msg_ctx);
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struct server_id_buf dst_buf;
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if (num_fds != 0) {
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DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
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return;
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}
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/* Check, it's a proper string! */
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if (params_str[(data->length)-1] != '\0') {
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DBG_ERR("Invalid debug message from pid %s to pid %s\n",
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server_id_str_buf(src, &src_buf),
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server_id_str_buf(dst, &dst_buf));
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return;
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}
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DBG_ERR("INFO: Remote set of debug to `%s' (pid %s from pid %s)\n",
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params_str,
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server_id_str_buf(dst, &dst_buf),
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server_id_str_buf(src, &src_buf));
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debug_parse_levels(params_str);
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}
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/****************************************************************************
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Return current debug level.
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****************************************************************************/
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static void debuglevel_imessage(struct imessaging_context *msg_ctx,
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void *private_data,
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uint32_t msg_type,
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struct server_id src,
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size_t num_fds,
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int *fds,
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DATA_BLOB *data)
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{
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char *message = debug_list_class_names_and_levels();
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DATA_BLOB blob = data_blob_null;
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struct server_id_buf src_buf;
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struct server_id dst = imessaging_get_server_id(msg_ctx);
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struct server_id_buf dst_buf;
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if (num_fds != 0) {
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DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
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return;
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}
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DBG_DEBUG("Received REQ_DEBUGLEVEL message (pid %s from pid %s)\n",
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server_id_str_buf(dst, &dst_buf),
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server_id_str_buf(src, &src_buf));
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if (message == NULL) {
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DBG_ERR("debug_list_class_names_and_levels returned NULL\n");
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return;
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}
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blob = data_blob_string_const_null(message);
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imessaging_send(msg_ctx, src, MSG_DEBUGLEVEL, &blob);
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TALLOC_FREE(message);
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}
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/*
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return uptime of messaging server via irpc
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*/
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static NTSTATUS irpc_uptime(struct irpc_message *msg,
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struct irpc_uptime *r)
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{
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struct imessaging_context *ctx = talloc_get_type(msg->private_data, struct imessaging_context);
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*r->out.start_time = timeval_to_nttime(&ctx->start_time);
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return NT_STATUS_OK;
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}
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static struct dispatch_fn *imessaging_find_dispatch(
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struct imessaging_context *msg, uint32_t msg_type)
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{
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/* temporary IDs use an idtree, the rest use a array of pointers */
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if (msg_type >= MSG_TMP_BASE) {
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return (struct dispatch_fn *)idr_find(msg->dispatch_tree,
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msg_type);
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}
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if (msg_type < msg->num_types) {
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return msg->dispatch[msg_type];
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}
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return NULL;
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}
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/*
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Register a dispatch function for a particular message type.
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*/
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NTSTATUS imessaging_register(struct imessaging_context *msg, void *private_data,
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uint32_t msg_type, msg_callback_t fn)
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{
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struct dispatch_fn *d;
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/* possibly expand dispatch array */
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if (msg_type >= msg->num_types) {
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struct dispatch_fn **dp;
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uint32_t i;
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dp = talloc_realloc(msg, msg->dispatch, struct dispatch_fn *, msg_type+1);
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NT_STATUS_HAVE_NO_MEMORY(dp);
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msg->dispatch = dp;
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for (i=msg->num_types;i<=msg_type;i++) {
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msg->dispatch[i] = NULL;
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}
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msg->num_types = msg_type+1;
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}
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d = talloc_zero(msg->dispatch, struct dispatch_fn);
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NT_STATUS_HAVE_NO_MEMORY(d);
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d->msg_type = msg_type;
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d->private_data = private_data;
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d->fn = fn;
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DLIST_ADD(msg->dispatch[msg_type], d);
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return NT_STATUS_OK;
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}
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/*
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register a temporary message handler. The msg_type is allocated
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above MSG_TMP_BASE
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*/
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NTSTATUS imessaging_register_tmp(struct imessaging_context *msg, void *private_data,
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msg_callback_t fn, uint32_t *msg_type)
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{
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struct dispatch_fn *d;
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int id;
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d = talloc_zero(msg->dispatch, struct dispatch_fn);
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NT_STATUS_HAVE_NO_MEMORY(d);
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d->private_data = private_data;
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d->fn = fn;
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id = idr_get_new_above(msg->dispatch_tree, d, MSG_TMP_BASE, UINT16_MAX);
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if (id == -1) {
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talloc_free(d);
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return NT_STATUS_TOO_MANY_CONTEXT_IDS;
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}
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d->msg_type = (uint32_t)id;
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(*msg_type) = d->msg_type;
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return NT_STATUS_OK;
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}
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/*
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De-register the function for a particular message type. Return the number of
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functions deregistered.
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*/
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size_t imessaging_deregister(struct imessaging_context *msg, uint32_t msg_type, void *private_data)
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{
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struct dispatch_fn *d, *next;
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size_t removed = 0;
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if (msg_type >= msg->num_types) {
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d = (struct dispatch_fn *)idr_find(msg->dispatch_tree,
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msg_type);
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if (!d) return 0;
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idr_remove(msg->dispatch_tree, msg_type);
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talloc_free(d);
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return 1;
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}
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for (d = msg->dispatch[msg_type]; d; d = next) {
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next = d->next;
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if (d->private_data == private_data) {
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DLIST_REMOVE(msg->dispatch[msg_type], d);
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talloc_free(d);
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++removed;
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}
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}
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return removed;
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}
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/*
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*/
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int imessaging_cleanup(struct imessaging_context *msg)
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{
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return 0;
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}
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static void imessaging_dgm_recv(struct tevent_context *ev,
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const uint8_t *buf, size_t buf_len,
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int *fds, size_t num_fds,
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void *private_data);
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/* Keep a list of imessaging contexts */
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static struct imessaging_context *msg_ctxs;
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/*
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* A process has terminated, clean-up any names it has registered.
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*/
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NTSTATUS imessaging_process_cleanup(
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struct imessaging_context *msg_ctx,
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pid_t pid)
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{
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struct irpc_name_records *names = NULL;
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uint32_t i = 0;
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uint32_t j = 0;
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TALLOC_CTX *mem_ctx = talloc_new(NULL);
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if (mem_ctx == NULL) {
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DBG_ERR("OOM unable to clean up messaging for process (%d)\n",
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pid);
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return NT_STATUS_NO_MEMORY;
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}
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names = irpc_all_servers(msg_ctx, mem_ctx);
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if (names == NULL) {
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TALLOC_FREE(mem_ctx);
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return NT_STATUS_OK;
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}
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for (i = 0; i < names->num_records; i++) {
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for (j = 0; j < names->names[i]->count; j++) {
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if (names->names[i]->ids[j].pid == pid) {
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int ret = server_id_db_prune_name(
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msg_ctx->names,
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names->names[i]->name,
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names->names[i]->ids[j]);
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if (ret != 0 && ret != ENOENT) {
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TALLOC_FREE(mem_ctx);
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return map_nt_error_from_unix_common(
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ret);
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}
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}
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}
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}
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TALLOC_FREE(mem_ctx);
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return NT_STATUS_OK;
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}
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static int imessaging_context_destructor(struct imessaging_context *msg)
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{
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struct irpc_request *irpc = NULL;
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struct irpc_request *next = NULL;
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for (irpc = msg->requests; irpc != NULL; irpc = next) {
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next = irpc->next;
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DLIST_REMOVE(msg->requests, irpc);
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irpc->callid = -1;
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}
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DLIST_REMOVE(msg_ctxs, msg);
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TALLOC_FREE(msg->msg_dgm_ref);
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return 0;
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}
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/*
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* Cleanup messaging dgm contexts on a specific event context.
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*
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* We must make sure to unref all messaging_dgm_ref's *before* the
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* tevent context goes away. Only when the last ref is freed, the
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* refcounted messaging dgm context will be freed.
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*/
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void imessaging_dgm_unref_ev(struct tevent_context *ev)
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{
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struct imessaging_context *msg = NULL;
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for (msg = msg_ctxs; msg != NULL; msg = msg->next) {
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if (msg->ev == ev) {
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TALLOC_FREE(msg->msg_dgm_ref);
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}
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}
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}
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static NTSTATUS imessaging_reinit(struct imessaging_context *msg)
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{
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int ret = -1;
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struct irpc_request *irpc = NULL;
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struct irpc_request *next = NULL;
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for (irpc = msg->requests; irpc != NULL; irpc = next) {
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next = irpc->next;
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DLIST_REMOVE(msg->requests, irpc);
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irpc->callid = -1;
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}
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TALLOC_FREE(msg->msg_dgm_ref);
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if (msg->discard_incoming) {
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msg->num_incoming_listeners = 0;
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} else {
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msg->num_incoming_listeners = 1;
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}
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msg->server_id.pid = getpid();
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msg->msg_dgm_ref = messaging_dgm_ref(msg,
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msg->ev,
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&msg->server_id.unique_id,
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msg->sock_dir,
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msg->lock_dir,
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imessaging_dgm_recv,
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msg,
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&ret);
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if (msg->msg_dgm_ref == NULL) {
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DEBUG(2, ("messaging_dgm_ref failed: %s\n",
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strerror(ret)));
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return map_nt_error_from_unix_common(ret);
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}
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server_id_db_reinit(msg->names, msg->server_id);
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return NT_STATUS_OK;
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}
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/*
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* Must be called after a fork.
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*/
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NTSTATUS imessaging_reinit_all(void)
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{
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struct imessaging_context *msg = NULL;
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for (msg = msg_ctxs; msg != NULL; msg = msg->next) {
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NTSTATUS status = imessaging_reinit(msg);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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}
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return NT_STATUS_OK;
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}
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/*
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create the listening socket and setup the dispatcher
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*/
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static struct imessaging_context *imessaging_init_internal(
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TALLOC_CTX *mem_ctx,
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bool discard_incoming,
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struct loadparm_context *lp_ctx,
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struct server_id server_id,
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struct tevent_context *ev)
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{
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NTSTATUS status;
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struct imessaging_context *msg;
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bool ok;
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int ret;
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const char *lock_dir = NULL;
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int tdb_flags = TDB_INCOMPATIBLE_HASH | TDB_CLEAR_IF_FIRST;
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if (ev == NULL) {
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return NULL;
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}
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msg = talloc_zero(mem_ctx, struct imessaging_context);
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if (msg == NULL) {
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return NULL;
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}
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msg->ev = ev;
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msg->discard_incoming = discard_incoming;
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if (msg->discard_incoming) {
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msg->num_incoming_listeners = 0;
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} else {
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msg->num_incoming_listeners = 1;
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}
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|
|
talloc_set_destructor(msg, imessaging_context_destructor);
|
|
|
|
/* create the messaging directory if needed */
|
|
|
|
lock_dir = lpcfg_lock_directory(lp_ctx);
|
|
if (lock_dir == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
msg->sock_dir = lpcfg_private_path(msg, lp_ctx, "msg.sock");
|
|
if (msg->sock_dir == NULL) {
|
|
goto fail;
|
|
}
|
|
ok = directory_create_or_exist_strict(msg->sock_dir, geteuid(), 0700);
|
|
if (!ok) {
|
|
goto fail;
|
|
}
|
|
|
|
msg->lock_dir = lpcfg_lock_path(msg, lp_ctx, "msg.lock");
|
|
if (msg->lock_dir == NULL) {
|
|
goto fail;
|
|
}
|
|
ok = directory_create_or_exist_strict(msg->lock_dir, geteuid(), 0755);
|
|
if (!ok) {
|
|
goto fail;
|
|
}
|
|
|
|
msg->msg_dgm_ref = messaging_dgm_ref(
|
|
msg, ev, &server_id.unique_id, msg->sock_dir, msg->lock_dir,
|
|
imessaging_dgm_recv, msg, &ret);
|
|
|
|
if (msg->msg_dgm_ref == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
msg->server_id = server_id;
|
|
msg->idr = idr_init(msg);
|
|
if (msg->idr == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
msg->dispatch_tree = idr_init(msg);
|
|
if (msg->dispatch_tree == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
msg->start_time = timeval_current();
|
|
|
|
tdb_flags |= lpcfg_tdb_flags(lp_ctx, 0);
|
|
|
|
/*
|
|
* This context holds a destructor that cleans up any names
|
|
* registered on this context on talloc_free()
|
|
*/
|
|
msg->names = server_id_db_init(msg, server_id, lock_dir, 0, tdb_flags);
|
|
if (msg->names == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
status = imessaging_register(msg, NULL, MSG_PING, ping_message);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
status = imessaging_register(msg, NULL, MSG_REQ_POOL_USAGE,
|
|
pool_message);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
status = imessaging_register(msg, NULL, MSG_IRPC, irpc_handler);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
status = imessaging_register(msg, NULL, MSG_REQ_RINGBUF_LOG,
|
|
ringbuf_log_msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
status = imessaging_register(msg, NULL, MSG_DEBUG,
|
|
debug_imessage);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
status = imessaging_register(msg, NULL, MSG_REQ_DEBUGLEVEL,
|
|
debuglevel_imessage);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
status = IRPC_REGISTER(msg, irpc, IRPC_UPTIME, irpc_uptime, msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
#if defined(DEVELOPER) || defined(ENABLE_SELFTEST)
|
|
/*
|
|
* Register handlers for messages specific to developer and
|
|
* self test builds
|
|
*/
|
|
status = imessaging_register_extra_handlers(msg);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
#endif /* defined(DEVELOPER) || defined(ENABLE_SELFTEST) */
|
|
|
|
DLIST_ADD(msg_ctxs, msg);
|
|
|
|
return msg;
|
|
fail:
|
|
talloc_free(msg);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
create the listening socket and setup the dispatcher
|
|
*/
|
|
struct imessaging_context *imessaging_init(TALLOC_CTX *mem_ctx,
|
|
struct loadparm_context *lp_ctx,
|
|
struct server_id server_id,
|
|
struct tevent_context *ev)
|
|
{
|
|
bool discard_incoming = false;
|
|
return imessaging_init_internal(mem_ctx,
|
|
discard_incoming,
|
|
lp_ctx,
|
|
server_id,
|
|
ev);
|
|
}
|
|
|
|
struct imessaging_context *imessaging_init_discard_incoming(
|
|
TALLOC_CTX *mem_ctx,
|
|
struct loadparm_context *lp_ctx,
|
|
struct server_id server_id,
|
|
struct tevent_context *ev)
|
|
{
|
|
bool discard_incoming = true;
|
|
return imessaging_init_internal(mem_ctx,
|
|
discard_incoming,
|
|
lp_ctx,
|
|
server_id,
|
|
ev);
|
|
}
|
|
|
|
struct imessaging_post_state {
|
|
struct imessaging_context *msg_ctx;
|
|
struct imessaging_post_state **busy_ref;
|
|
size_t buf_len;
|
|
uint8_t buf[];
|
|
};
|
|
|
|
static int imessaging_post_state_destructor(struct imessaging_post_state *state)
|
|
{
|
|
if (state->busy_ref != NULL) {
|
|
*state->busy_ref = NULL;
|
|
state->busy_ref = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void imessaging_post_handler(struct tevent_context *ev,
|
|
struct tevent_immediate *ti,
|
|
void *private_data)
|
|
{
|
|
struct imessaging_post_state *state = talloc_get_type_abort(
|
|
private_data, struct imessaging_post_state);
|
|
|
|
if (state == NULL) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* In usecases like using messaging_client_init() with irpc processing
|
|
* we may free the imessaging_context during the messaging handler.
|
|
* imessaging_post_state is a child of imessaging_context and
|
|
* might be implicitly free'ed before the explicit TALLOC_FREE(state).
|
|
*
|
|
* The busy_ref pointer makes sure the destructor clears
|
|
* the local 'state' variable.
|
|
*/
|
|
|
|
SMB_ASSERT(state->busy_ref == NULL);
|
|
state->busy_ref = &state;
|
|
|
|
imessaging_dgm_recv(ev, state->buf, state->buf_len, NULL, 0,
|
|
state->msg_ctx);
|
|
|
|
state->busy_ref = NULL;
|
|
TALLOC_FREE(state);
|
|
}
|
|
|
|
static int imessaging_post_self(struct imessaging_context *msg,
|
|
const uint8_t *buf, size_t buf_len)
|
|
{
|
|
struct tevent_immediate *ti;
|
|
struct imessaging_post_state *state;
|
|
|
|
state = talloc_size(
|
|
msg, offsetof(struct imessaging_post_state, buf) + buf_len);
|
|
if (state == NULL) {
|
|
return ENOMEM;
|
|
}
|
|
talloc_set_name_const(state, "struct imessaging_post_state");
|
|
|
|
talloc_set_destructor(state, imessaging_post_state_destructor);
|
|
|
|
ti = tevent_create_immediate(state);
|
|
if (ti == NULL) {
|
|
TALLOC_FREE(state);
|
|
return ENOMEM;
|
|
}
|
|
|
|
state->msg_ctx = msg;
|
|
state->busy_ref = NULL;
|
|
state->buf_len = buf_len;
|
|
memcpy(state->buf, buf, buf_len);
|
|
|
|
tevent_schedule_immediate(ti, msg->ev, imessaging_post_handler,
|
|
state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void imessaging_dgm_recv(struct tevent_context *ev,
|
|
const uint8_t *buf, size_t buf_len,
|
|
int *fds, size_t num_fds,
|
|
void *private_data)
|
|
{
|
|
struct imessaging_context *msg = talloc_get_type_abort(
|
|
private_data, struct imessaging_context);
|
|
uint32_t msg_type;
|
|
struct server_id src, dst;
|
|
struct server_id_buf srcbuf, dstbuf;
|
|
DATA_BLOB data;
|
|
|
|
if (buf_len < MESSAGE_HDR_LENGTH) {
|
|
/* Invalid message, ignore */
|
|
return;
|
|
}
|
|
|
|
if (msg->num_incoming_listeners == 0) {
|
|
struct server_id_buf selfbuf;
|
|
|
|
message_hdr_get(&msg_type, &src, &dst, buf);
|
|
|
|
DBG_DEBUG("not listening - discarding message from "
|
|
"src[%s] to dst[%s] (self[%s]) type=0x%x "
|
|
"on %s event context\n",
|
|
server_id_str_buf(src, &srcbuf),
|
|
server_id_str_buf(dst, &dstbuf),
|
|
server_id_str_buf(msg->server_id, &selfbuf),
|
|
(unsigned)msg_type,
|
|
(ev != msg->ev) ? "different" : "main");
|
|
return;
|
|
}
|
|
|
|
if (ev != msg->ev) {
|
|
int ret;
|
|
ret = imessaging_post_self(msg, buf, buf_len);
|
|
if (ret != 0) {
|
|
DBG_WARNING("imessaging_post_self failed: %s\n",
|
|
strerror(ret));
|
|
}
|
|
return;
|
|
}
|
|
|
|
message_hdr_get(&msg_type, &src, &dst, buf);
|
|
|
|
data.data = discard_const_p(uint8_t, buf + MESSAGE_HDR_LENGTH);
|
|
data.length = buf_len - MESSAGE_HDR_LENGTH;
|
|
|
|
if ((cluster_id_equal(&dst, &msg->server_id)) ||
|
|
((dst.task_id == 0) && (msg->server_id.pid == 0))) {
|
|
struct dispatch_fn *d, *next;
|
|
|
|
DEBUG(10, ("%s: dst %s matches my id: %s, type=0x%x\n",
|
|
__func__,
|
|
server_id_str_buf(dst, &dstbuf),
|
|
server_id_str_buf(msg->server_id, &srcbuf),
|
|
(unsigned)msg_type));
|
|
|
|
d = imessaging_find_dispatch(msg, msg_type);
|
|
|
|
for (; d; d = next) {
|
|
next = d->next;
|
|
d->fn(msg,
|
|
d->private_data,
|
|
d->msg_type,
|
|
src,
|
|
num_fds,
|
|
fds,
|
|
&data);
|
|
}
|
|
} else {
|
|
DEBUG(10, ("%s: Ignoring type=0x%x dst %s, I am %s, \n",
|
|
__func__, (unsigned)msg_type,
|
|
server_id_str_buf(dst, &dstbuf),
|
|
server_id_str_buf(msg->server_id, &srcbuf)));
|
|
}
|
|
}
|
|
|
|
/*
|
|
A hack, for the short term until we get 'client only' messaging in place
|
|
*/
|
|
struct imessaging_context *imessaging_client_init(TALLOC_CTX *mem_ctx,
|
|
struct loadparm_context *lp_ctx,
|
|
struct tevent_context *ev)
|
|
{
|
|
struct server_id id = {
|
|
.pid = getpid(),
|
|
.task_id = generate_random(),
|
|
.vnn = NONCLUSTER_VNN,
|
|
|
|
/* This is because we are not in the s3 serverid database */
|
|
.unique_id = SERVERID_UNIQUE_ID_NOT_TO_VERIFY,
|
|
};
|
|
|
|
return imessaging_init_discard_incoming(mem_ctx, lp_ctx, id, ev);
|
|
}
|
|
|
|
/*
|
|
a list of registered irpc server functions
|
|
*/
|
|
struct irpc_list {
|
|
struct irpc_list *next, *prev;
|
|
struct GUID uuid;
|
|
const struct ndr_interface_table *table;
|
|
int callnum;
|
|
irpc_function_t fn;
|
|
void *private_data;
|
|
};
|
|
|
|
|
|
/*
|
|
register a irpc server function
|
|
*/
|
|
NTSTATUS irpc_register(struct imessaging_context *msg_ctx,
|
|
const struct ndr_interface_table *table,
|
|
int callnum, irpc_function_t fn, void *private_data)
|
|
{
|
|
struct irpc_list *irpc;
|
|
|
|
/* override an existing handler, if any */
|
|
for (irpc=msg_ctx->irpc; irpc; irpc=irpc->next) {
|
|
if (irpc->table == table && irpc->callnum == callnum) {
|
|
break;
|
|
}
|
|
}
|
|
if (irpc == NULL) {
|
|
irpc = talloc(msg_ctx, struct irpc_list);
|
|
NT_STATUS_HAVE_NO_MEMORY(irpc);
|
|
DLIST_ADD(msg_ctx->irpc, irpc);
|
|
}
|
|
|
|
irpc->table = table;
|
|
irpc->callnum = callnum;
|
|
irpc->fn = fn;
|
|
irpc->private_data = private_data;
|
|
irpc->uuid = irpc->table->syntax_id.uuid;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
|
|
/*
|
|
handle an incoming irpc reply message
|
|
*/
|
|
static void irpc_handler_reply(struct imessaging_context *msg_ctx, struct irpc_message *m)
|
|
{
|
|
struct irpc_request *irpc;
|
|
|
|
irpc = (struct irpc_request *)idr_find(msg_ctx->idr, m->header.callid);
|
|
if (irpc == NULL) return;
|
|
|
|
irpc->incoming.handler(irpc, m);
|
|
}
|
|
|
|
/*
|
|
send a irpc reply
|
|
*/
|
|
NTSTATUS irpc_send_reply(struct irpc_message *m, NTSTATUS status)
|
|
{
|
|
struct ndr_push *push;
|
|
DATA_BLOB packet;
|
|
enum ndr_err_code ndr_err;
|
|
|
|
m->header.status = status;
|
|
|
|
/* setup the reply */
|
|
push = ndr_push_init_ctx(m->ndr);
|
|
if (push == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto failed;
|
|
}
|
|
|
|
m->header.flags |= IRPC_FLAG_REPLY;
|
|
m->header.creds.token= NULL;
|
|
|
|
/* construct the packet */
|
|
ndr_err = ndr_push_irpc_header(push, NDR_SCALARS|NDR_BUFFERS, &m->header);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
|
status = ndr_map_error2ntstatus(ndr_err);
|
|
goto failed;
|
|
}
|
|
|
|
ndr_err = m->irpc->table->calls[m->irpc->callnum].ndr_push(push, NDR_OUT, m->data);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
|
status = ndr_map_error2ntstatus(ndr_err);
|
|
goto failed;
|
|
}
|
|
|
|
/* send the reply message */
|
|
packet = ndr_push_blob(push);
|
|
status = imessaging_send(m->msg_ctx, m->from, MSG_IRPC, &packet);
|
|
if (!NT_STATUS_IS_OK(status)) goto failed;
|
|
|
|
failed:
|
|
talloc_free(m);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
handle an incoming irpc request message
|
|
*/
|
|
static void irpc_handler_request(struct imessaging_context *msg_ctx,
|
|
struct irpc_message *m)
|
|
{
|
|
struct irpc_list *i;
|
|
void *r;
|
|
enum ndr_err_code ndr_err;
|
|
|
|
for (i=msg_ctx->irpc; i; i=i->next) {
|
|
if (GUID_equal(&i->uuid, &m->header.uuid) &&
|
|
i->table->syntax_id.if_version == m->header.if_version &&
|
|
i->callnum == m->header.callnum) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == NULL) {
|
|
/* no registered handler for this message */
|
|
talloc_free(m);
|
|
return;
|
|
}
|
|
|
|
/* allocate space for the structure */
|
|
r = talloc_zero_size(m->ndr, i->table->calls[m->header.callnum].struct_size);
|
|
if (r == NULL) goto failed;
|
|
|
|
m->ndr->flags |= LIBNDR_FLAG_REF_ALLOC;
|
|
|
|
/* parse the request data */
|
|
ndr_err = i->table->calls[i->callnum].ndr_pull(m->ndr, NDR_IN, r);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) goto failed;
|
|
|
|
/* make the call */
|
|
m->private_data= i->private_data;
|
|
m->defer_reply = false;
|
|
m->no_reply = false;
|
|
m->msg_ctx = msg_ctx;
|
|
m->irpc = i;
|
|
m->data = r;
|
|
|
|
m->header.status = i->fn(m, r);
|
|
|
|
if (m->no_reply) {
|
|
/* the server function won't ever be replying to this request */
|
|
talloc_free(m);
|
|
return;
|
|
}
|
|
|
|
if (m->defer_reply) {
|
|
/* the server function has asked to defer the reply to later */
|
|
talloc_steal(msg_ctx, m);
|
|
return;
|
|
}
|
|
|
|
irpc_send_reply(m, m->header.status);
|
|
return;
|
|
|
|
failed:
|
|
talloc_free(m);
|
|
}
|
|
|
|
/*
|
|
handle an incoming irpc message
|
|
*/
|
|
static void irpc_handler(struct imessaging_context *msg_ctx,
|
|
void *private_data,
|
|
uint32_t msg_type,
|
|
struct server_id src,
|
|
size_t num_fds,
|
|
int *fds,
|
|
DATA_BLOB *packet)
|
|
{
|
|
struct irpc_message *m;
|
|
enum ndr_err_code ndr_err;
|
|
|
|
if (num_fds != 0) {
|
|
DBG_WARNING("Received %zu fds, ignoring message\n", num_fds);
|
|
return;
|
|
}
|
|
|
|
m = talloc(msg_ctx, struct irpc_message);
|
|
if (m == NULL) goto failed;
|
|
|
|
m->from = src;
|
|
|
|
m->ndr = ndr_pull_init_blob(packet, m);
|
|
if (m->ndr == NULL) goto failed;
|
|
|
|
m->ndr->flags |= LIBNDR_FLAG_REF_ALLOC;
|
|
|
|
ndr_err = ndr_pull_irpc_header(m->ndr, NDR_BUFFERS|NDR_SCALARS, &m->header);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) goto failed;
|
|
|
|
if (m->header.flags & IRPC_FLAG_REPLY) {
|
|
irpc_handler_reply(msg_ctx, m);
|
|
} else {
|
|
irpc_handler_request(msg_ctx, m);
|
|
}
|
|
return;
|
|
|
|
failed:
|
|
talloc_free(m);
|
|
}
|
|
|
|
|
|
/*
|
|
destroy a irpc request
|
|
*/
|
|
static int irpc_destructor(struct irpc_request *irpc)
|
|
{
|
|
if (irpc->callid != -1) {
|
|
DLIST_REMOVE(irpc->msg_ctx->requests, irpc);
|
|
idr_remove(irpc->msg_ctx->idr, irpc->callid);
|
|
if (irpc->msg_ctx->discard_incoming) {
|
|
SMB_ASSERT(irpc->msg_ctx->num_incoming_listeners > 0);
|
|
} else {
|
|
SMB_ASSERT(irpc->msg_ctx->num_incoming_listeners > 1);
|
|
}
|
|
irpc->msg_ctx->num_incoming_listeners -= 1;
|
|
irpc->callid = -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
add a string name that this irpc server can be called on
|
|
|
|
It will be removed from the DB either via irpc_remove_name or on
|
|
talloc_free(msg_ctx->names).
|
|
*/
|
|
NTSTATUS irpc_add_name(struct imessaging_context *msg_ctx, const char *name)
|
|
{
|
|
int ret;
|
|
|
|
ret = server_id_db_add(msg_ctx->names, name);
|
|
if (ret != 0) {
|
|
return map_nt_error_from_unix_common(ret);
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static int all_servers_func(const char *name, unsigned num_servers,
|
|
const struct server_id *servers,
|
|
void *private_data)
|
|
{
|
|
struct irpc_name_records *name_records = talloc_get_type(
|
|
private_data, struct irpc_name_records);
|
|
struct irpc_name_record *name_record;
|
|
uint32_t i;
|
|
|
|
name_records->names
|
|
= talloc_realloc(name_records, name_records->names,
|
|
struct irpc_name_record *, name_records->num_records+1);
|
|
if (!name_records->names) {
|
|
return -1;
|
|
}
|
|
|
|
name_records->names[name_records->num_records] = name_record
|
|
= talloc(name_records->names,
|
|
struct irpc_name_record);
|
|
if (!name_record) {
|
|
return -1;
|
|
}
|
|
|
|
name_records->num_records++;
|
|
|
|
name_record->name = talloc_strdup(name_record, name);
|
|
if (!name_record->name) {
|
|
return -1;
|
|
}
|
|
|
|
name_record->count = num_servers;
|
|
name_record->ids = talloc_array(name_record, struct server_id,
|
|
num_servers);
|
|
if (name_record->ids == NULL) {
|
|
return -1;
|
|
}
|
|
for (i=0;i<name_record->count;i++) {
|
|
name_record->ids[i] = servers[i];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
return a list of server ids for a server name
|
|
*/
|
|
struct irpc_name_records *irpc_all_servers(struct imessaging_context *msg_ctx,
|
|
TALLOC_CTX *mem_ctx)
|
|
{
|
|
int ret;
|
|
struct irpc_name_records *name_records = talloc_zero(mem_ctx, struct irpc_name_records);
|
|
if (name_records == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
ret = server_id_db_traverse_read(msg_ctx->names, all_servers_func,
|
|
name_records);
|
|
if (ret == -1) {
|
|
TALLOC_FREE(name_records);
|
|
return NULL;
|
|
}
|
|
|
|
return name_records;
|
|
}
|
|
|
|
/*
|
|
remove a name from a messaging context
|
|
*/
|
|
void irpc_remove_name(struct imessaging_context *msg_ctx, const char *name)
|
|
{
|
|
server_id_db_remove(msg_ctx->names, name);
|
|
}
|
|
|
|
struct server_id imessaging_get_server_id(struct imessaging_context *msg_ctx)
|
|
{
|
|
return msg_ctx->server_id;
|
|
}
|
|
|
|
struct irpc_bh_state {
|
|
struct imessaging_context *msg_ctx;
|
|
const struct dcerpc_binding *binding;
|
|
struct server_id server_id;
|
|
const struct ndr_interface_table *table;
|
|
uint32_t timeout;
|
|
struct security_token *token;
|
|
};
|
|
|
|
static const struct dcerpc_binding *irpc_bh_get_binding(struct dcerpc_binding_handle *h)
|
|
{
|
|
struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct irpc_bh_state);
|
|
|
|
return hs->binding;
|
|
}
|
|
|
|
static bool irpc_bh_is_connected(struct dcerpc_binding_handle *h)
|
|
{
|
|
struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct irpc_bh_state);
|
|
|
|
if (!hs->msg_ctx) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static uint32_t irpc_bh_set_timeout(struct dcerpc_binding_handle *h,
|
|
uint32_t timeout)
|
|
{
|
|
struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct irpc_bh_state);
|
|
uint32_t old = hs->timeout;
|
|
|
|
hs->timeout = timeout;
|
|
|
|
return old;
|
|
}
|
|
|
|
struct irpc_bh_raw_call_state {
|
|
struct irpc_request *irpc;
|
|
uint32_t opnum;
|
|
DATA_BLOB in_data;
|
|
DATA_BLOB in_packet;
|
|
DATA_BLOB out_data;
|
|
};
|
|
|
|
static void irpc_bh_raw_call_incoming_handler(struct irpc_request *irpc,
|
|
struct irpc_message *m);
|
|
|
|
static struct tevent_req *irpc_bh_raw_call_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct dcerpc_binding_handle *h,
|
|
const struct GUID *object,
|
|
uint32_t opnum,
|
|
uint32_t in_flags,
|
|
const uint8_t *in_data,
|
|
size_t in_length)
|
|
{
|
|
struct irpc_bh_state *hs =
|
|
dcerpc_binding_handle_data(h,
|
|
struct irpc_bh_state);
|
|
struct tevent_req *req;
|
|
struct irpc_bh_raw_call_state *state;
|
|
bool ok;
|
|
struct irpc_header header;
|
|
struct ndr_push *ndr;
|
|
NTSTATUS status;
|
|
enum ndr_err_code ndr_err;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct irpc_bh_raw_call_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->opnum = opnum;
|
|
state->in_data.data = discard_const_p(uint8_t, in_data);
|
|
state->in_data.length = in_length;
|
|
|
|
ok = irpc_bh_is_connected(h);
|
|
if (!ok) {
|
|
tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
state->irpc = talloc_zero(state, struct irpc_request);
|
|
if (tevent_req_nomem(state->irpc, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
state->irpc->msg_ctx = hs->msg_ctx;
|
|
state->irpc->callid = idr_get_new(hs->msg_ctx->idr,
|
|
state->irpc, UINT16_MAX);
|
|
if (state->irpc->callid == -1) {
|
|
tevent_req_nterror(req, NT_STATUS_INSUFFICIENT_RESOURCES);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
state->irpc->incoming.handler = irpc_bh_raw_call_incoming_handler;
|
|
state->irpc->incoming.private_data = req;
|
|
|
|
/* make sure we accept incoming messages */
|
|
SMB_ASSERT(state->irpc->msg_ctx->num_incoming_listeners < UINT64_MAX);
|
|
state->irpc->msg_ctx->num_incoming_listeners += 1;
|
|
DLIST_ADD_END(state->irpc->msg_ctx->requests, state->irpc);
|
|
talloc_set_destructor(state->irpc, irpc_destructor);
|
|
|
|
/* setup the header */
|
|
header.uuid = hs->table->syntax_id.uuid;
|
|
|
|
header.if_version = hs->table->syntax_id.if_version;
|
|
header.callid = state->irpc->callid;
|
|
header.callnum = state->opnum;
|
|
header.flags = 0;
|
|
header.status = NT_STATUS_OK;
|
|
header.creds.token= hs->token;
|
|
|
|
/* construct the irpc packet */
|
|
ndr = ndr_push_init_ctx(state->irpc);
|
|
if (tevent_req_nomem(ndr, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
ndr_err = ndr_push_irpc_header(ndr, NDR_SCALARS|NDR_BUFFERS, &header);
|
|
status = ndr_map_error2ntstatus(ndr_err);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
ndr_err = ndr_push_bytes(ndr, in_data, in_length);
|
|
status = ndr_map_error2ntstatus(ndr_err);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
/* and send it */
|
|
state->in_packet = ndr_push_blob(ndr);
|
|
status = imessaging_send(hs->msg_ctx, hs->server_id,
|
|
MSG_IRPC, &state->in_packet);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (hs->timeout != IRPC_CALL_TIMEOUT_INF) {
|
|
/* set timeout-callback in case caller wants that */
|
|
ok = tevent_req_set_endtime(req, ev, timeval_current_ofs(hs->timeout, 0));
|
|
if (!ok) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
}
|
|
|
|
return req;
|
|
}
|
|
|
|
static void irpc_bh_raw_call_incoming_handler(struct irpc_request *irpc,
|
|
struct irpc_message *m)
|
|
{
|
|
struct tevent_req *req =
|
|
talloc_get_type_abort(irpc->incoming.private_data,
|
|
struct tevent_req);
|
|
struct irpc_bh_raw_call_state *state =
|
|
tevent_req_data(req,
|
|
struct irpc_bh_raw_call_state);
|
|
|
|
talloc_steal(state, m);
|
|
|
|
if (!NT_STATUS_IS_OK(m->header.status)) {
|
|
tevent_req_nterror(req, m->header.status);
|
|
return;
|
|
}
|
|
|
|
state->out_data = data_blob_talloc(state,
|
|
m->ndr->data + m->ndr->offset,
|
|
m->ndr->data_size - m->ndr->offset);
|
|
if ((m->ndr->data_size - m->ndr->offset) > 0 && !state->out_data.data) {
|
|
tevent_req_oom(req);
|
|
return;
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static NTSTATUS irpc_bh_raw_call_recv(struct tevent_req *req,
|
|
TALLOC_CTX *mem_ctx,
|
|
uint8_t **out_data,
|
|
size_t *out_length,
|
|
uint32_t *out_flags)
|
|
{
|
|
struct irpc_bh_raw_call_state *state =
|
|
tevent_req_data(req,
|
|
struct irpc_bh_raw_call_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
*out_data = talloc_move(mem_ctx, &state->out_data.data);
|
|
*out_length = state->out_data.length;
|
|
*out_flags = 0;
|
|
tevent_req_received(req);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
struct irpc_bh_disconnect_state {
|
|
uint8_t _dummy;
|
|
};
|
|
|
|
static struct tevent_req *irpc_bh_disconnect_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct dcerpc_binding_handle *h)
|
|
{
|
|
struct irpc_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct irpc_bh_state);
|
|
struct tevent_req *req;
|
|
struct irpc_bh_disconnect_state *state;
|
|
bool ok;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct irpc_bh_disconnect_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
ok = irpc_bh_is_connected(h);
|
|
if (!ok) {
|
|
tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
hs->msg_ctx = NULL;
|
|
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
static NTSTATUS irpc_bh_disconnect_recv(struct tevent_req *req)
|
|
{
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
tevent_req_received(req);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static bool irpc_bh_ref_alloc(struct dcerpc_binding_handle *h)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void irpc_bh_do_ndr_print(struct dcerpc_binding_handle *h,
|
|
ndr_flags_type ndr_flags,
|
|
const void *_struct_ptr,
|
|
const struct ndr_interface_call *call)
|
|
{
|
|
void *struct_ptr = discard_const(_struct_ptr);
|
|
bool print_in = false;
|
|
bool print_out = false;
|
|
|
|
if (DEBUGLEVEL >= 11) {
|
|
print_in = true;
|
|
print_out = true;
|
|
}
|
|
|
|
if (ndr_flags & NDR_IN) {
|
|
if (print_in) {
|
|
ndr_print_function_debug(call->ndr_print,
|
|
call->name,
|
|
ndr_flags,
|
|
struct_ptr);
|
|
}
|
|
}
|
|
if (ndr_flags & NDR_OUT) {
|
|
if (print_out) {
|
|
ndr_print_function_debug(call->ndr_print,
|
|
call->name,
|
|
ndr_flags,
|
|
struct_ptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const struct dcerpc_binding_handle_ops irpc_bh_ops = {
|
|
.name = "wbint",
|
|
.get_binding = irpc_bh_get_binding,
|
|
.is_connected = irpc_bh_is_connected,
|
|
.set_timeout = irpc_bh_set_timeout,
|
|
.raw_call_send = irpc_bh_raw_call_send,
|
|
.raw_call_recv = irpc_bh_raw_call_recv,
|
|
.disconnect_send = irpc_bh_disconnect_send,
|
|
.disconnect_recv = irpc_bh_disconnect_recv,
|
|
|
|
.ref_alloc = irpc_bh_ref_alloc,
|
|
.do_ndr_print = irpc_bh_do_ndr_print,
|
|
};
|
|
|
|
/* initialise a irpc binding handle */
|
|
struct dcerpc_binding_handle *irpc_binding_handle(TALLOC_CTX *mem_ctx,
|
|
struct imessaging_context *msg_ctx,
|
|
struct server_id server_id,
|
|
const struct ndr_interface_table *table)
|
|
{
|
|
struct dcerpc_binding_handle *h = NULL;
|
|
struct irpc_bh_state *hs = NULL;
|
|
struct dcerpc_binding *b = NULL;
|
|
NTSTATUS status;
|
|
|
|
h = dcerpc_binding_handle_create(mem_ctx,
|
|
&irpc_bh_ops,
|
|
NULL,
|
|
table,
|
|
&hs,
|
|
struct irpc_bh_state,
|
|
__location__);
|
|
if (h == NULL) {
|
|
return NULL;
|
|
}
|
|
hs->msg_ctx = msg_ctx;
|
|
hs->server_id = server_id;
|
|
hs->table = table;
|
|
hs->timeout = IRPC_CALL_TIMEOUT;
|
|
|
|
status = dcerpc_parse_binding(hs, "", &b);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(h);
|
|
return NULL;
|
|
}
|
|
status = dcerpc_binding_set_transport(b, NCACN_INTERNAL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(h);
|
|
return NULL;
|
|
}
|
|
status = dcerpc_binding_set_string_option(b, "host", "localhost");
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(h);
|
|
return NULL;
|
|
}
|
|
status = dcerpc_binding_set_string_option(b, "endpoint", "irpc");
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(h);
|
|
return NULL;
|
|
}
|
|
status = dcerpc_binding_set_abstract_syntax(b, &table->syntax_id);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(h);
|
|
return NULL;
|
|
}
|
|
|
|
hs->binding = b;
|
|
|
|
return h;
|
|
}
|
|
|
|
struct dcerpc_binding_handle *irpc_binding_handle_by_name(TALLOC_CTX *mem_ctx,
|
|
struct imessaging_context *msg_ctx,
|
|
const char *dest_task,
|
|
const struct ndr_interface_table *table)
|
|
{
|
|
struct dcerpc_binding_handle *h;
|
|
unsigned num_sids;
|
|
struct server_id *sids;
|
|
struct server_id sid;
|
|
NTSTATUS status;
|
|
|
|
/* find the server task */
|
|
|
|
status = irpc_servers_byname(msg_ctx, mem_ctx, dest_task,
|
|
&num_sids, &sids);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
errno = EADDRNOTAVAIL;
|
|
return NULL;
|
|
}
|
|
sid = sids[0];
|
|
talloc_free(sids);
|
|
|
|
h = irpc_binding_handle(mem_ctx, msg_ctx,
|
|
sid, table);
|
|
if (h == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
return h;
|
|
}
|
|
|
|
void irpc_binding_handle_add_security_token(struct dcerpc_binding_handle *h,
|
|
struct security_token *token)
|
|
{
|
|
struct irpc_bh_state *hs =
|
|
dcerpc_binding_handle_data(h,
|
|
struct irpc_bh_state);
|
|
|
|
hs->token = token;
|
|
}
|