SERVER SERVICE code
- Copyright (C) Andrew Tridgell 2003
+ Copyright (C) Andrew Tridgell 2003-2005
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-#include "events.h"
-#include "system/dir.h"
-#include "dlinklist.h"
-#include "process_model.h"
-
-struct server_context *server_service_startup(const char *model, const char **server_services)
-{
- int i;
- struct server_context *server;
-
- if (!server_services) {
- DEBUG(0,("server_service_startup: no endpoint servers configured\n"));
- return NULL;
- }
-
- server = talloc_zero(NULL, struct server_context);
- if (!server) {
- return NULL;
- }
-
- server->model.ops = process_model_startup(server, model);
- if (!server->model.ops) {
- DEBUG(0,("process_model_startup('%s') failed\n", model));
- return NULL;
- }
-
- server->event.ctx = event_context_init(server);
- if (!server->event.ctx) {
- DEBUG(0,("event_context_init() failed\n"));
- return NULL;
- }
-
- for (i=0;server_services[i];i++) {
- 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;
- }
-
- service = talloc_zero(server, struct server_service);
- if (!service) {
- return NULL;
- }
-
- service->service.ops = service_ops;
- service->server = server;
-
- /* TODO: service_init() should return a result */
- service->service.ops->service_init(service);
-
- DLIST_ADD(server->service_list, service);
- }
-
- return server;
-}
-
-void server_service_shutdown(struct server_context *server, const char *reason)
-{
- server->model.ops->model_exit(server, reason);
-}
-
-/*
- setup a listen stream socket
- if you pass *port == 0, then a port > 1024 is used
- */
-struct server_stream_socket *service_setup_stream_socket(struct server_service *service,
- const struct server_stream_ops *stream_ops,
- const char *family,
- const char *sock_addr,
- uint16_t *port)
-{
- NTSTATUS status;
- struct server_stream_socket *stream_socket;
- struct socket_context *sock;
- struct fd_event fde;
- int i;
-
- status = socket_create(family, SOCKET_TYPE_STREAM, &sock, 0);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to open socket on %s:%u - %s\n",
- sock_addr, *port, nt_errstr(status)));
- return NULL;
- }
-
- /* ready to listen */
- status = socket_set_option(sock, "SO_KEEPALIVE SO_REUSEADDR=1", NULL);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("socket_set_option(socket_ctx, SO_KEEPALIVE, NULL): %s\n",
- nt_errstr(status)));
- socket_destroy(sock);
- return NULL;
- }
- status = socket_set_option(sock, lp_socket_options(), NULL);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("socket_set_option(socket_ctx, lp_socket_options(), NULL): %s\n",
- nt_errstr(status)));
- socket_destroy(sock);
- return NULL;
- }
-
- /* TODO: set socket ACL's here when they're implemented */
-
- if (*port == 0) {
- for (i=SERVER_TCP_LOW_PORT;i<= SERVER_TCP_HIGH_PORT;i++) {
- status = socket_listen(sock, sock_addr, i, SERVER_LISTEN_BACKLOG, 0);
- if (NT_STATUS_IS_OK(status)) {
- *port = i;
- break;
- }
- }
- } else {
- status = socket_listen(sock, sock_addr, *port, SERVER_LISTEN_BACKLOG, 0);
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to listen on %s:%u - %s\n",
- sock_addr, *port, nt_errstr(status)));
- socket_destroy(sock);
- return NULL;
- }
-
- stream_socket = talloc_zero(service, struct server_stream_socket);
- if (!stream_socket) {
- DEBUG(0,("talloc_p(mem_ctx, struct server_stream_socket) failed\n"));
- socket_destroy(sock);
- return NULL;
- }
-
- /* we are only interested in read events on the listen socket */
- fde.fd = socket_get_fd(sock);
- fde.flags = EVENT_FD_READ;
- fde.private = stream_socket;
- fde.handler = server_accept_handler;
-
- stream_socket->stream.ops = stream_ops;
- stream_socket->service = service;
- stream_socket->socket = sock;
- stream_socket->event.ctx = service->server->event.ctx;
- stream_socket->event.fde = event_add_fd(stream_socket->event.ctx, &fde);
- if (!stream_socket->event.fde) {
- DEBUG(0,("event_add_fd(stream_socket->event.ctx, &fde) failed\n"));
- socket_destroy(sock);
- return NULL;
- }
-
- talloc_steal(stream_socket, sock);
-
- if (stream_socket->stream.ops->socket_init) {
- stream_socket->stream.ops->socket_init(stream_socket);
- }
-
- return stream_socket;
-}
+#include "../lib/util/dlinklist.h"
+#include "smbd/process_model.h"
/*
- destructor that handles necessary event context changes
- */
-static int server_connection_destructor(void *ptr)
-{
- struct server_connection *conn = ptr;
-
- if (conn->stream_socket &&
- conn->stream_socket->stream.ops->close_connection) {
- /* don't remove this! the stream service needs to free it's data
- * before we destroy the server_connection
- */
- conn->stream_socket->stream.ops->close_connection(conn, "shutdown");
- }
-
- if (conn->event.fde) {
- event_remove_fd(conn->event.ctx, conn->event.fde);
- conn->event.fde = NULL;
- }
- if (conn->event.idle) {
- event_remove_timed(conn->event.ctx, conn->event.idle);
- conn->event.idle = NULL;
- }
-
- return 0;
-}
-
-struct server_connection *server_setup_connection(struct event_context *ev,
- struct server_stream_socket *stream_socket,
- struct socket_context *sock,
- struct timeval t,
- servid_t server_id)
-{
- struct fd_event fde;
- struct timed_event idle;
- struct server_connection *srv_conn;
-
- srv_conn = talloc_p(stream_socket, struct server_connection);
- if (!srv_conn) {
- DEBUG(0,("talloc_p(mem_ctx, struct server_connection) failed\n"));
- return NULL;
- }
-
- ZERO_STRUCTP(srv_conn);
-
- fde.private = srv_conn;
- fde.fd = socket_get_fd(sock);
- fde.flags = EVENT_FD_READ;
- fde.handler = server_io_handler;
-
- idle.private = srv_conn;
- idle.next_event = timeval_add(&t, SERVER_DEFAULT_IDLE_TIME, 0);
- idle.handler = server_idle_handler;
-
- srv_conn->event.ctx = ev;
- srv_conn->event.fde = &fde;
- srv_conn->event.idle = &idle;
- srv_conn->event.idle_time = timeval_set(SERVER_DEFAULT_IDLE_TIME, 0);
-
- srv_conn->stream_socket = stream_socket;
- srv_conn->socket = sock;
- srv_conn->connection.id = server_id;
-
- /* create a server context and add it to out event
- handling */
- stream_socket->stream.ops->accept_connection(srv_conn);
-
- /* accpect_connection() of the service may changed idle.next_event */
- srv_conn->event.fde = event_add_fd(ev,&fde);
- srv_conn->event.idle = event_add_timed(ev,&idle);
-
- talloc_set_destructor(srv_conn, server_connection_destructor);
-
- if (!socket_check_access(sock, "smbd", lp_hostsallow(-1), lp_hostsdeny(-1))) {
- server_terminate_connection(srv_conn, "denied by access rules");
- return NULL;
- }
-
- /* setup to receive internal messages on this connection */
- srv_conn->messaging.ctx = messaging_init(srv_conn, srv_conn->connection.id, ev);
- if (!srv_conn->messaging.ctx) {
- server_terminate_connection(srv_conn, "messaging_init() failed");
- return NULL;
- }
-
- return srv_conn;
-}
+ a linked list of registered servers
+*/
+static struct registered_server {
+ struct registered_server *next, *prev;
+ const char *service_name;
+ void (*task_init)(struct task_server *);
+} *registered_servers;
/*
- close the socket and shutdown a server_context
+ register a server service.
*/
-void server_terminate_connection(struct server_connection *srv_conn, const char *reason)
-{
- DEBUG(2,("server_terminate_connection\n"));
- srv_conn->stream_socket->service->server->model.ops->terminate_connection(srv_conn, reason);
-}
-
-void server_accept_handler(struct event_context *ev, struct fd_event *fde,
- struct timeval t, uint16_t flags)
-{
- struct server_stream_socket *stream_socket = fde->private;
-
- stream_socket->service->server->model.ops->accept_connection(ev, fde, t, flags);
-}
-
-void server_io_handler(struct event_context *ev, struct fd_event *fde,
- struct timeval t, uint16_t flags)
-{
- struct server_connection *conn = fde->private;
-
- conn->event.idle->next_event = timeval_sum(&t, &conn->event.idle_time);
-
- if (flags & EVENT_FD_WRITE) {
- conn->stream_socket->stream.ops->send_handler(conn, t, flags);
- return;
- }
-
- if (flags & EVENT_FD_READ) {
- conn->stream_socket->stream.ops->recv_handler(conn, t, flags);
- }
-
-}
-
-void server_idle_handler(struct event_context *ev, struct timed_event *idle,
- struct timeval t)
+NTSTATUS register_server_service(const char *name,
+ void (*task_init)(struct task_server *))
{
- struct server_connection *conn = idle->private;
-
- /* Not all services provide an idle handler */
- if (conn->stream_socket->stream.ops->idle_handler) {
- conn->event.idle->next_event = timeval_sum(&t, &conn->event.idle_time);
- conn->stream_socket->stream.ops->idle_handler(conn, t);
- }
+ struct registered_server *srv;
+ srv = talloc(talloc_autofree_context(), struct registered_server);
+ NT_STATUS_HAVE_NO_MEMORY(srv);
+ srv->service_name = name;
+ srv->task_init = task_init;
+ DLIST_ADD_END(registered_servers, srv, struct registered_server *);
+ return NT_STATUS_OK;
}
-void server_terminate_task(struct server_task *task, const char *reason)
-{
- task->service->server->model.ops->terminate_task(task, reason);
- return;
-}
-
-void server_run_task(struct server_service *service, const struct server_task_ops *ops)
-{
- struct server_task *task;
-
- task = talloc_zero(service, struct server_task);
- if (!task) {
- return;
- }
- task->service = service;
- task->task.ops = ops;
-
- service->server->model.ops->create_task(task);
- return;
-}
/*
- return the operations structure for a named backend of the specified type
+ initialise a server service
*/
-const struct server_service_ops *server_service_byname(const char *name)
+static NTSTATUS server_service_init(const char *name,
+ struct tevent_context *event_context,
+ struct loadparm_context *lp_ctx,
+ const struct model_ops *model_ops)
{
- if (strcmp("smb",name)==0) {
- return smbsrv_get_ops();
- }
- if (strcmp("rpc",name)==0) {
- return dcesrv_get_ops();
- }
- if (strcmp("ldap",name)==0) {
- return ldapsrv_get_ops();
- }
- if (strcmp("winbind",name)==0) {
- return winbind_get_ops();
- }
- if (strcmp("winbind_task",name)==0) {
- return winbind_task_get_ops();
+ struct registered_server *srv;
+ for (srv=registered_servers; srv; srv=srv->next) {
+ if (strcasecmp(name, srv->service_name) == 0) {
+ return task_server_startup(event_context, lp_ctx, srv->service_name,
+ model_ops, srv->task_init);
+ }
}
- return NULL;
+ return NT_STATUS_INVALID_SYSTEM_SERVICE;
}
-NTSTATUS register_server_service_ops(const void *_ops)
-{
- return NT_STATUS_NOT_IMPLEMENTED;
-}
/*
- cleanup temporary files. This is the new alternative to
- TDB_CLEAR_IF_FIRST. Unfortunately TDB_CLEAR_IF_FIRST is not
- efficient on unix systems due to the lack of scaling of the byte
- range locking system. So instead of putting the burden on tdb to
- cleanup tmp files, this function deletes them.
+ startup all of our server services
*/
-void service_cleanup_tmp_files(void)
+NTSTATUS server_service_startup(struct tevent_context *event_ctx,
+ struct loadparm_context *lp_ctx,
+ const char *model, const char **server_services)
{
- char *path;
- DIR *dir;
- struct dirent *de;
- TALLOC_CTX *mem_ctx = talloc_init("service_cleanup_tmp_files");
+ int i;
+ const struct model_ops *model_ops;
- path = smbd_tmp_path(mem_ctx, NULL);
+ if (!server_services) {
+ DEBUG(0,("server_service_startup: no endpoint servers configured\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
- dir = opendir(path);
- if (!dir) {
- talloc_free(mem_ctx);
- return;
+ model_ops = process_model_startup(event_ctx, model);
+ if (!model_ops) {
+ DEBUG(0,("process_model_startup('%s') failed\n", model));
+ return NT_STATUS_INTERNAL_ERROR;
}
- for (de=readdir(dir);de;de=readdir(dir)) {
- char *fname = talloc_asprintf(mem_ctx, "%s/%s", path, de->d_name);
- int ret = unlink(fname);
- if (ret == -1 &&
- errno != ENOENT &&
- errno != EISDIR &&
- errno != EISDIR) {
- DEBUG(0,("Unabled to delete '%s' - %s\n",
- fname, strerror(errno)));
- smb_panic("unable to cleanup tmp files");
+ for (i=0;server_services[i];i++) {
+ NTSTATUS status;
+
+ status = server_service_init(server_services[i], event_ctx, lp_ctx, model_ops);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to start service '%s' - %s\n",
+ server_services[i], nt_errstr(status)));
}
- talloc_free(fname);
+ NT_STATUS_NOT_OK_RETURN(status);
}
- closedir(dir);
- talloc_free(mem_ctx);
+ return NT_STATUS_OK;
}
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