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/*
Unix SMB/CIFS implementation.
SERVER SERVICE 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 server_context *server_service_startup(const char *model)
{
int i;
const char **server_services = lp_server_services();
TALLOC_CTX *mem_ctx;
struct server_context *srv_ctx;
const struct model_ops *model_ops;
if (!server_services) {
DEBUG(0,("process_model_startup: no endpoint servers configured\n"));
return NULL;
}
model_ops = process_model_startup(model);
if (!model_ops) {
DEBUG(0,("process_model_startup('%s') failed\n", model));
return NULL;
}
mem_ctx = talloc_init("server_context");
if (!mem_ctx) {
DEBUG(0,("talloc_init(server_context) failed\n"));
return NULL;
}
srv_ctx = talloc_p(mem_ctx, struct server_context);
if (!srv_ctx) {
DEBUG(0,("talloc_p(mem_ctx, struct server_context) failed\n"));
return NULL;
}
ZERO_STRUCTP(srv_ctx);
srv_ctx->mem_ctx = mem_ctx;
srv_ctx->events = event_context_init();
if (!srv_ctx->events) {
DEBUG(0,("event_context_init() failed\n"));
return NULL;
}
for (i=0;server_services[i];i++) {
TALLOC_CTX *mem_ctx2;
const struct server_service_ops *service_ops;
struct server_service *service;
service_ops = server_service_byname(server_services[i]);
if (!service_ops) {
DEBUG(0,("process_model_startup: failed to find server service = '%s'\n", server_services[i]));
return NULL;
}
mem_ctx2 = talloc_init("server_service");
service = talloc_p(mem_ctx2, struct server_service);
if (!service) {
DEBUG(0,("talloc_p(mem_ctx, struct server_service) failed\n"));
return NULL;
}
ZERO_STRUCTP(service);
service->mem_ctx = mem_ctx2;
service->ops = service_ops;
service->model_ops = model_ops;
service->srv_ctx = srv_ctx;
/* TODO: service_init() should return a result */
service->ops->service_init(service, model_ops);
}
return srv_ctx;
}
/*
setup a single listener of any type
if you pass *port == 0, then a port < 1024 is used
*/
struct server_socket *service_setup_socket(struct server_service *service,
const struct model_ops *model_ops,
struct socket_context *socket_ctx,
struct in_addr *ifip, uint16_t *port)
{
TALLOC_CTX *mem_ctx;
struct server_socket *sock;
struct fd_event fde;
int i;
mem_ctx = talloc_init("struct server_socket");
sock = talloc_p(mem_ctx, struct server_socket);
if (!sock) {
DEBUG(0,("talloc_p(mem_ctx, struct server_socket) failed\n"));
return NULL;
}
if (*port == 0) {
fde.fd = -1;
for (i=SERVER_TCP_LOW_PORT;i<= SERVER_TCP_HIGH_PORT;i++) {
fde.fd = open_socket_in(SOCK_STREAM, i, 0, ifip->s_addr, True);
if (fde.fd != -1) break;
}
if (fde.fd != -1) {
*port = i;
}
} else {
fde.fd = open_socket_in(SOCK_STREAM, *port, 0, ifip->s_addr, True);
}
if (fde.fd == -1) {
DEBUG(0,("Failed to open socket on %s:%u - %s\n",
inet_ntoa(*ifip), *port, strerror(errno)));
return NULL;
}
/* ready to listen */
set_socket_options(fde.fd, "SO_KEEPALIVE");
set_socket_options(fde.fd, lp_socket_options());
if (listen(fde.fd, SERVER_LISTEN_BACKLOG) == -1) {
DEBUG(0,("Failed to listen on %s:%u - %s\n",
inet_ntoa(*ifip), *port, strerror(errno)));
close(fde.fd);
return NULL;
}
/* we are only interested in read events on the listen socket */
fde.flags = EVENT_FD_READ;
fde.private = sock;
fde.handler = model_ops->accept_connection;
ZERO_STRUCTP(sock);
sock->mem_ctx = mem_ctx;
sock->service = service;
sock->socket = socket_ctx;
sock->event.ctx = service->srv_ctx->events;
sock->event.fde = event_add_fd(sock->event.ctx, &fde);
if (!sock->event.fde) {
DEBUG(0,("event_add_fd(sock->event.ctx, &fde) failed\n"));
return NULL;
}
DLIST_ADD(service->socket_list, sock);
return sock;
}
/*
close the socket and shutdown a server_context
*/
void server_terminate_connection(struct server_connection *srv_conn, const char *reason)
{
DEBUG(0,("server_terminate_connection\n"));
srv_conn->service->model_ops->terminate_connection(srv_conn, reason);
}
void server_io_handler(struct event_context *ev, struct fd_event *fde, time_t t, uint16_t flags)
{
struct server_connection *conn = fde->private;
if (flags & EVENT_FD_WRITE) {
conn->service->ops->send_handler(conn, t, flags);
conn->event.idle->next_event = t + conn->event.idle_time;
}
if (flags & EVENT_FD_READ) {
conn->service->ops->recv_handler(conn, t, flags);
conn->event.idle->next_event = t + conn->event.idle_time;
}
}
void server_idle_handler(struct event_context *ev, struct timed_event *idle, time_t t)
{
struct server_connection *conn = idle->private;
conn->event.idle->next_event = t + conn->event.idle_time;
conn->service->ops->idle_handler(conn,t);
}
/*
return the operations structure for a named backend of the specified type
*/
const struct server_service_ops *server_service_byname(const char *name)
{
if (strcmp("smb",name)==0) {
return smbsrv_get_ops();
}
if (strcmp("rpc",name)==0) {
return dcesrv_get_ops();
}
return NULL;
}
static NTSTATUS register_server_service_ops(const void *_ops)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
/*
initialise the SERVER SERVICE subsystem
*/
BOOL server_service_init(void)
{
NTSTATUS status;
status = register_subsystem("service", register_server_service_ops);
if (!NT_STATUS_IS_OK(status)) {
return False;
}
/* FIXME: Perhaps panic if a basic endpoint server, such as EPMAPER, fails to initialise? */
static_init_server_service;
DEBUG(3,("SERVER SERVICE subsystem version %d initialised\n", SERVER_SERVICE_VERSION));
return True;
}
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