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/*
Unix SMB/CIFS implementation.
server side dcerpc over tcp code
Copyright (C) Andrew Tridgell 2003
Copyright (C) Stefan (metze) Metzmacher 2004
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"
struct dcesrv_socket_context {
const struct dcesrv_endpoint *endpoint;
struct dcesrv_context *dcesrv_ctx;
};
/*
write_fn callback for dcesrv_output()
*/
static ssize_t dcerpc_write_fn(void *private, const void *buf, size_t count)
{
struct fd_event *fde = private;
ssize_t ret;
ret = write(fde->fd, buf, count);
if (ret == -1 && errno == EINTR) {
return 0;
}
return ret;
}
void dcesrv_terminate_connection(struct dcesrv_connection *dce_conn, const char *reason)
{
server_terminate_connection(dce_conn->srv_conn, reason);
}
/*
add a socket address to the list of events, one event per dcerpc endpoint
*/
static void add_socket_rpc(struct server_service *service,
const struct model_ops *model_ops,
struct socket_context *socket_ctx,
struct dcesrv_context *dce_ctx,
struct in_addr *ifip)
{
struct dcesrv_endpoint *e;
for (e=dce_ctx->endpoint_list;e;e=e->next) {
if (e->ep_description.type == ENDPOINT_TCP) {
struct server_socket *sock;
struct dcesrv_socket_context *dcesrv_sock;
sock = service_setup_socket(service,model_ops,socket_ctx,ifip, &e->ep_description.info.tcp_port);
if (!sock) {
DEBUG(0,("service_setup_socket(port=%u) failed\n",e->ep_description.info.tcp_port));
continue;
}
dcesrv_sock = talloc_p(sock->mem_ctx, struct dcesrv_socket_context);
if (!dcesrv_sock) {
DEBUG(0,("talloc_p(sock->mem_ctx, struct dcesrv_socket_context) failed\n"));
continue;
}
/* remeber the enpoint of this socket */
dcesrv_sock->endpoint = e;
dcesrv_sock->dcesrv_ctx = dce_ctx;
sock->private_data = dcesrv_sock;
}
}
}
/****************************************************************************
Open the listening sockets for RPC over TCP
****************************************************************************/
void dcesrv_tcp_init(struct server_service *service, const struct model_ops *model_ops, struct dcesrv_context *dce_ctx)
{
DEBUG(1,("dcesrv_tcp_init\n"));
if (lp_interfaces() && lp_bind_interfaces_only()) {
int num_interfaces = iface_count();
int i;
for(i = 0; i < num_interfaces; i++) {
struct in_addr *ifip = iface_n_ip(i);
if (ifip == NULL) {
continue;
}
add_socket_rpc(service, model_ops, NULL, dce_ctx, ifip);
}
} else {
struct in_addr *ifip;
TALLOC_CTX *mem_ctx = talloc_init("open_sockets_smbd");
if (!mem_ctx) {
smb_panic("No memory");
}
ifip = interpret_addr2(mem_ctx, lp_socket_address());
add_socket_rpc(service, model_ops, NULL, dce_ctx, ifip);
talloc_destroy(mem_ctx);
}
return;
}
void dcesrv_tcp_accept(struct server_connection *conn)
{
NTSTATUS status;
struct dcesrv_socket_context *dcesrv_sock = conn->server_socket->private_data;
struct dcesrv_connection *dcesrv_conn = NULL;
DEBUG(5,("dcesrv_tcp_accept\n"));
status = dcesrv_endpoint_connect(dcesrv_sock->dcesrv_ctx, dcesrv_sock->endpoint, &dcesrv_conn);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("dcesrv_tcp_accept: dcesrv_endpoint_connect failed: %s\n",
nt_errstr(status)));
return;
}
dcesrv_conn->srv_conn = conn;
conn->private_data = dcesrv_conn;
/* TODO: this should to the generic code
* but the smb server can't handle it yet
* --metze
*/
set_blocking(conn->event.fde->fd, False);
return;
}
void dcesrv_tcp_recv(struct server_connection *conn, time_t t, uint16_t flags)
{
struct dcesrv_connection *dce_conn = conn->private_data;
DATA_BLOB blob;
ssize_t ret;
DEBUG(10,("dcesrv_tcp_recv\n"));
blob = data_blob(NULL, 0x4000);
if (!blob.data) {
dcesrv_terminate_connection(dce_conn, "eof on socket");
return;
}
ret = read(conn->event.fde->fd, blob.data, blob.length);
if (ret == 0 || (ret == -1 && errno != EINTR)) {
data_blob_free(&blob);
dcesrv_terminate_connection(dce_conn, "eof on socket");
return;
}
if (ret == -1) {
data_blob_free(&blob);
return;
}
blob.length = ret;
dcesrv_input(dce_conn, &blob);
data_blob_free(&blob);
if (dce_conn->call_list && dce_conn->call_list->replies) {
conn->event.fde->flags |= EVENT_FD_WRITE;
}
return;
}
void dcesrv_tcp_send(struct server_connection *conn, time_t t, uint16_t flags)
{
struct dcesrv_connection *dce_conn = conn->private_data;
NTSTATUS status;
DEBUG(10,("dcesrv_tcp_send\n"));
status = dcesrv_output(dce_conn, conn->event.fde, dcerpc_write_fn);
if (NT_STATUS_IS_ERR(status)) {
/* TODO: destroy fd_event? */
}
if (!dce_conn->call_list || !dce_conn->call_list->replies) {
conn->event.fde->flags &= ~EVENT_FD_WRITE;
}
return;
}
void dcesrv_tcp_idle(struct server_connection *conn, time_t t)
{
DEBUG(10,("dcesrv_tcp_idle\n"));
conn->event.idle->next_event = t + 5;
return;
}
void dcesrv_tcp_close(struct server_connection *conn, const char *reason)
{
struct dcesrv_connection *dce_conn = conn->private_data;
DEBUG(5,("dcesrv_tcp_close: %s\n",reason));
talloc_destroy(dce_conn->mem_ctx);
return;
}
void dcesrv_tcp_exit(struct server_service *service, const char *reason)
{
DEBUG(1,("dcesrv_tcp_exit: %s\n",reason));
return;
}
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