Merge branch 'master' of git://git.samba.org/samba
[kai/samba.git] / source4 / smbd / service_stream.c
index 8df8c474f5be8756f704b639b5d8a61bef2babbc..2d8b9559f4ea12b2febde1d071d808ac450543c4 100644 (file)
 */
 
 #include "includes.h"
+#include <tevent.h>
 #include "process_model.h"
-#include "lib/events/events.h"
-#include "lib/socket/socket.h"
-#include "smbd/service.h"
-#include "smbd/service_stream.h"
 #include "lib/messaging/irpc.h"
 #include "cluster/cluster.h"
 #include "param/param.h"
+#include "../lib/tsocket/tsocket.h"
 
 /* the range of ports to try for dcerpc over tcp endpoints */
 #define SERVER_TCP_LOW_PORT  1024
 */
 struct stream_socket {
        const struct stream_server_ops *ops;
-       struct event_context *event_ctx;
+       struct loadparm_context *lp_ctx;
+       struct tevent_context *event_ctx;
        const struct model_ops *model_ops;
        struct socket_context *sock;
-       void *private;
+       void *private_data;
 };
 
 
@@ -55,11 +54,13 @@ struct stream_socket {
 */
 void stream_terminate_connection(struct stream_connection *srv_conn, const char *reason)
 {
-       struct event_context *event_ctx = srv_conn->event.ctx;
+       struct tevent_context *event_ctx = srv_conn->event.ctx;
        const struct model_ops *model_ops = srv_conn->model_ops;
 
        if (!reason) reason = "unknown reason";
 
+       DEBUG(3,("Terminating connection - '%s'\n", reason));
+
        srv_conn->terminate = reason;
 
        if (srv_conn->processing) {
@@ -69,14 +70,14 @@ void stream_terminate_connection(struct stream_connection *srv_conn, const char
                 *
                 * and we don't want to read or write to the connection...
                 */
-               event_set_fd_flags(srv_conn->event.fde, 0);
+               tevent_fd_set_flags(srv_conn->event.fde, 0);
                return;
        }
 
        talloc_free(srv_conn->event.fde);
        srv_conn->event.fde = NULL;
+       model_ops->terminate(event_ctx, srv_conn->lp_ctx, reason);
        talloc_free(srv_conn);
-       model_ops->terminate(event_ctx, reason);
 }
 
 /**
@@ -84,30 +85,30 @@ void stream_terminate_connection(struct stream_connection *srv_conn, const char
 */
 static void stream_io_handler(struct stream_connection *conn, uint16_t flags)
 {
-       conn->processing = true;
-       if (flags & EVENT_FD_WRITE) {
+       conn->processing++;
+       if (flags & TEVENT_FD_WRITE) {
                conn->ops->send_handler(conn, flags);
-       } else if (flags & EVENT_FD_READ) {
+       } else if (flags & TEVENT_FD_READ) {
                conn->ops->recv_handler(conn, flags);
        }
-       conn->processing = false;
+       conn->processing--;
 
        if (conn->terminate) {
                stream_terminate_connection(conn, conn->terminate);
        }
 }
 
-static void stream_io_handler_fde(struct event_context *ev, struct fd_event *fde, 
-                                 uint16_t flags, void *private)
+static void stream_io_handler_fde(struct tevent_context *ev, struct tevent_fd *fde, 
+                                 uint16_t flags, void *private_data)
 {
-       struct stream_connection *conn = talloc_get_type(private
+       struct stream_connection *conn = talloc_get_type(private_data,
                                                         struct stream_connection);
        stream_io_handler(conn, flags);
 }
 
-void stream_io_handler_callback(void *private, uint16_t flags) 
+void stream_io_handler_callback(void *private_data, uint16_t flags)
 {
-       struct stream_connection *conn = talloc_get_type(private
+       struct stream_connection *conn = talloc_get_type(private_data,
                                                         struct stream_connection);
        stream_io_handler(conn, flags);
 }
@@ -117,7 +118,8 @@ void stream_io_handler_callback(void *private, uint16_t flags)
   used for protocols, where a client connection needs to switched into
   a server connection
 */
-NTSTATUS stream_new_connection_merge(struct event_context *ev,
+NTSTATUS stream_new_connection_merge(struct tevent_context *ev,
+                                    struct loadparm_context *lp_ctx,
                                     const struct model_ops *model_ops,
                                     struct socket_context *sock,
                                     const struct stream_server_ops *stream_ops,
@@ -132,16 +134,22 @@ NTSTATUS stream_new_connection_merge(struct event_context *ev,
 
        talloc_steal(srv_conn, sock);
 
-       srv_conn->private       = private_data;
+       srv_conn->private_data  = private_data;
        srv_conn->model_ops     = model_ops;
        srv_conn->socket        = sock;
-       srv_conn->server_id     = cluster_id(0);
+       srv_conn->server_id     = cluster_id(0, 0);
        srv_conn->ops           = stream_ops;
        srv_conn->msg_ctx       = msg_ctx;
        srv_conn->event.ctx     = ev;
-       srv_conn->event.fde     = event_add_fd(ev, srv_conn, socket_get_fd(sock),
-                                              EVENT_FD_READ, 
-                                              stream_io_handler_fde, srv_conn);
+       srv_conn->lp_ctx        = lp_ctx;
+       srv_conn->event.fde     = tevent_add_fd(ev, srv_conn, socket_get_fd(sock),
+                                               TEVENT_FD_READ,
+                                               stream_io_handler_fde, srv_conn);
+       if (!srv_conn->event.fde) {
+               talloc_free(srv_conn);
+               return NT_STATUS_NO_MEMORY;
+       }
+
        *_srv_conn = srv_conn;
        return NT_STATUS_OK;
 }
@@ -150,13 +158,13 @@ NTSTATUS stream_new_connection_merge(struct event_context *ev,
   called when a new socket connection has been established. This is called in the process
   context of the new process (if appropriate)
 */
-static void stream_new_connection(struct event_context *ev,
+static void stream_new_connection(struct tevent_context *ev,
+                                 struct loadparm_context *lp_ctx,
                                  struct socket_context *sock, 
-                                 struct server_id server_id, void *private)
+                                 struct server_id server_id, void *private_data)
 {
-       struct stream_socket *stream_socket = talloc_get_type(private, struct stream_socket);
+       struct stream_socket *stream_socket = talloc_get_type(private_data, struct stream_socket);
        struct stream_connection *srv_conn;
-       struct socket_address *c, *s;
 
        srv_conn = talloc_zero(ev, struct stream_connection);
        if (!srv_conn) {
@@ -166,46 +174,68 @@ static void stream_new_connection(struct event_context *ev,
 
        talloc_steal(srv_conn, sock);
 
-       srv_conn->private       = stream_socket->private;
+       srv_conn->private_data  = stream_socket->private_data;
        srv_conn->model_ops     = stream_socket->model_ops;
        srv_conn->socket        = sock;
        srv_conn->server_id     = server_id;
        srv_conn->ops           = stream_socket->ops;
        srv_conn->event.ctx     = ev;
-       srv_conn->event.fde     = event_add_fd(ev, srv_conn, socket_get_fd(sock),
-                                              0, stream_io_handler_fde, srv_conn);
+       srv_conn->lp_ctx        = lp_ctx;
 
-       if (!socket_check_access(sock, "smbd", lp_hostsallow(NULL), lp_hostsdeny(NULL))) {
+       if (!socket_check_access(sock, "smbd", lp_hostsallow(NULL, lp_default_service(lp_ctx)), lp_hostsdeny(NULL, lp_default_service(lp_ctx)))) {
                stream_terminate_connection(srv_conn, "denied by access rules");
                return;
        }
 
+       srv_conn->event.fde     = tevent_add_fd(ev, srv_conn, socket_get_fd(sock),
+                                               0, stream_io_handler_fde, srv_conn);
+       if (!srv_conn->event.fde) {
+               stream_terminate_connection(srv_conn, "tevent_add_fd() failed");
+               return;
+       }
+
        /* setup to receive internal messages on this connection */
        srv_conn->msg_ctx = messaging_init(srv_conn, 
-                                          lp_messaging_path(srv_conn, global_loadparm),
-                                          srv_conn->server_id, ev);
+                                          lp_messaging_path(srv_conn, lp_ctx),
+                                          srv_conn->server_id, 
+                                          lp_iconv_convenience(lp_ctx),
+                                          ev);
        if (!srv_conn->msg_ctx) {
                stream_terminate_connection(srv_conn, "messaging_init() failed");
                return;
        }
 
-       c = socket_get_peer_addr(sock, ev);
-       s = socket_get_my_addr(sock, ev);
-       if (s && c) {
+       srv_conn->remote_address = socket_get_remote_addr(srv_conn->socket, srv_conn);
+       if (!srv_conn->remote_address) {
+               stream_terminate_connection(srv_conn, "socket_get_remote_addr() failed");
+               return;
+       }
+
+       srv_conn->local_address = socket_get_local_addr(srv_conn->socket, srv_conn);
+       if (!srv_conn->local_address) {
+               stream_terminate_connection(srv_conn, "socket_get_local_addr() failed");
+               return;
+       }
+
+       {
+               TALLOC_CTX *tmp_ctx;
                const char *title;
-               title = talloc_asprintf(s, "conn[%s] c[%s:%u] s[%s:%u] server_id[%s]",
+
+               tmp_ctx = talloc_new(srv_conn);
+
+               title = talloc_asprintf(tmp_ctx, "conn[%s] c[%s] s[%s] server_id[%s]",
                                        stream_socket->ops->name, 
-                                       c->addr, c->port, s->addr, s->port,
-                                       cluster_id_string(s, server_id));
+                                       tsocket_address_string(srv_conn->remote_address, tmp_ctx),
+                                       tsocket_address_string(srv_conn->local_address, tmp_ctx),
+                                       cluster_id_string(tmp_ctx, server_id));
                if (title) {
                        stream_connection_set_title(srv_conn, title);
                }
+               talloc_free(tmp_ctx);
        }
-       talloc_free(c);
-       talloc_free(s);
 
        /* we're now ready to start receiving events on this stream */
-       EVENT_FD_READABLE(srv_conn->event.fde);
+       TEVENT_FD_READABLE(srv_conn->event.fde);
 
        /* call the server specific accept code */
        stream_socket->ops->accept_connection(srv_conn);
@@ -215,15 +245,16 @@ static void stream_new_connection(struct event_context *ev,
 /*
   called when someone opens a connection to one of our listening ports
 */
-static void stream_accept_handler(struct event_context *ev, struct fd_event *fde, 
-                                 uint16_t flags, void *private)
+static void stream_accept_handler(struct tevent_context *ev, struct tevent_fd *fde, 
+                                 uint16_t flags, void *private_data)
 {
-       struct stream_socket *stream_socket = talloc_get_type(private, struct stream_socket);
+       struct stream_socket *stream_socket = talloc_get_type(private_data, struct stream_socket);
 
        /* ask the process model to create us a process for this new
           connection.  When done, it calls stream_new_connection()
           with the newly created socket */
-       stream_socket->model_ops->accept_connection(ev, stream_socket->sock, 
+       stream_socket->model_ops->accept_connection(ev, stream_socket->lp_ctx, 
+                                                   stream_socket->sock, 
                                                    stream_new_connection, stream_socket);
 }
 
@@ -235,18 +266,20 @@ static void stream_accept_handler(struct event_context *ev, struct fd_event *fde
         a string for the port. Should leave allocating a port nr 
          to the socket implementation - JRV20070903
  */
-NTSTATUS stream_setup_socket(struct event_context *event_context,
+NTSTATUS stream_setup_socket(struct tevent_context *event_context,
+                            struct loadparm_context *lp_ctx,
                             const struct model_ops *model_ops,
                             const struct stream_server_ops *stream_ops,
                             const char *family,
                             const char *sock_addr,
                             uint16_t *port,
                             const char *socket_options,
-                            void *private)
+                            void *private_data)
 {
        NTSTATUS status;
        struct stream_socket *stream_socket;
        struct socket_address *socket_address;
+       struct tevent_fd *fde;
        int i;
 
        stream_socket = talloc_zero(event_context, struct stream_socket);
@@ -257,6 +290,8 @@ NTSTATUS stream_setup_socket(struct event_context *event_context,
 
        talloc_steal(stream_socket, stream_socket->sock);
 
+       stream_socket->lp_ctx = talloc_reference(stream_socket, lp_ctx);
+
        /* ready to listen */
        status = socket_set_option(stream_socket->sock, "SO_KEEPALIVE", NULL);
        NT_STATUS_NOT_OK_RETURN(status);
@@ -266,8 +301,11 @@ NTSTATUS stream_setup_socket(struct event_context *event_context,
                NT_STATUS_NOT_OK_RETURN(status);
        }
 
-       /* TODO: set socket ACL's here when they're implemented */
+       /* TODO: set socket ACL's (host allow etc) here when they're
+        * implemented */
 
+       /* Some sockets don't have a port, or are just described from
+        * the string.  We are indicating this by having port == NULL */
        if (!port) {
                socket_address = socket_address_from_strings(stream_socket, 
                                                             stream_socket->sock->backend_name,
@@ -301,20 +339,32 @@ NTSTATUS stream_setup_socket(struct event_context *event_context,
 
        if (!NT_STATUS_IS_OK(status)) {
                DEBUG(0,("Failed to listen on %s:%u - %s\n",
-                       sock_addr, *port, nt_errstr(status)));
+                        sock_addr, port ? (unsigned int)(*port) : 0,
+                        nt_errstr(status)));
                talloc_free(stream_socket);
                return status;
        }
 
-       /* we will close the socket using the events system */
-       socket_set_flags(stream_socket->sock, SOCKET_FLAG_NOCLOSE);
+       /* Add the FD from the newly created socket into the event
+        * subsystem.  it will call the accept handler whenever we get
+        * new connections */
 
-       event_add_fd(event_context, stream_socket->sock, 
-                    socket_get_fd(stream_socket->sock), 
-                    EVENT_FD_READ|EVENT_FD_AUTOCLOSE, 
-                    stream_accept_handler, stream_socket);
+       fde = tevent_add_fd(event_context, stream_socket->sock,
+                           socket_get_fd(stream_socket->sock),
+                           TEVENT_FD_READ,
+                           stream_accept_handler, stream_socket);
+       if (!fde) {
+               DEBUG(0,("Failed to setup fd event\n"));
+               talloc_free(stream_socket);
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       /* we let events system to the close on the socket. This avoids
+        * nasty interactions with waiting for talloc to close the socket. */
+       tevent_fd_set_close_fn(fde, socket_tevent_fd_close_fn);
+       socket_set_flags(stream_socket->sock, SOCKET_FLAG_NOCLOSE);
 
-       stream_socket->private          = talloc_reference(stream_socket, private);
+       stream_socket->private_data     = talloc_reference(stream_socket, private_data);
        stream_socket->ops              = stream_ops;
        stream_socket->event_ctx        = event_context;
        stream_socket->model_ops        = model_ops;