s3-fault: removed the cont_fn from fault_setup()
[ira/wip.git] / source3 / smbd / server.c
index 7b788e8d1a1b54f5fb7b034c4e742fabd33220c9..2c09dd26c5b2b4d06d8325557386ddbc2dd00aa8 100644 (file)
 */
 
 #include "includes.h"
+#include "popt_common.h"
 #include "smbd/globals.h"
 #include "librpc/gen_ndr/messaging.h"
 #include "registry.h"
+#include "registry/reg_init_full.h"
 #include "libcli/auth/schannel.h"
-
-static_decl_rpc;
+#include "secrets.h"
+#include "memcache.h"
+#include "ctdbd_conn.h"
+#include "printing/printer_list.h"
+#include "rpc_server/rpc_ep_setup.h"
+#include "printing/pcap.h"
+#include "printing.h"
+#include "serverid.h"
+
+extern void start_epmd(struct tevent_context *ev_ctx,
+                      struct messaging_context *msg_ctx);
 
 #ifdef WITH_DFS
 extern int dcelogin_atmost_once;
 #endif /* WITH_DFS */
 
-int smbd_server_fd(void)
-{
-       return server_fd;
-}
-
 static void smbd_set_server_fd(int fd)
 {
-       server_fd = fd;
-}
+       struct smbd_server_connection *sconn = smbd_server_conn;
+       char addr[INET6_ADDRSTRLEN];
+       const char *name;
 
-int get_client_fd(void)
-{
-       return server_fd;
+       sconn->sock = fd;
+
+       /*
+        * Initialize sconn->client_id: If we can't find the client's
+        * name, default to its address.
+        */
+
+       client_addr(fd, sconn->client_id.addr, sizeof(sconn->client_id.addr));
+
+       name = client_name(sconn->sock);
+       if (strcmp(name, "UNKNOWN") != 0) {
+               name = talloc_strdup(sconn, name);
+       } else {
+               name = NULL;
+       }
+       sconn->client_id.name =
+               (name != NULL) ? name : sconn->client_id.addr;
+
+       sub_set_socket_ids(sconn->client_id.addr, sconn->client_id.name,
+                          client_socket_addr(sconn->sock, addr,
+                                             sizeof(addr)));
 }
 
 struct event_context *smbd_event_context(void)
@@ -63,12 +88,36 @@ static void smb_conf_updated(struct messaging_context *msg,
                             struct server_id server_id,
                             DATA_BLOB *data)
 {
+       struct tevent_context *ev_ctx =
+               talloc_get_type_abort(private_data, struct tevent_context);
+
        DEBUG(10,("smb_conf_updated: Got message saying smb.conf was "
                  "updated. Reloading.\n"));
        change_to_root_user();
-       reload_services(False);
+       reload_services(msg, smbd_server_conn->sock, False);
+       if (am_parent) {
+               pcap_cache_reload(ev_ctx, msg,
+                                 &reload_pcap_change_notify);
+       }
 }
 
+/*******************************************************************
+ What to do when printcap is updated.
+ ********************************************************************/
+
+static void smb_pcap_updated(struct messaging_context *msg,
+                            void *private_data,
+                            uint32_t msg_type,
+                            struct server_id server_id,
+                            DATA_BLOB *data)
+{
+       struct tevent_context *ev_ctx =
+               talloc_get_type_abort(private_data, struct tevent_context);
+
+       DEBUG(10,("Got message saying pcap was updated. Reloading.\n"));
+       change_to_root_user();
+       reload_printers(ev_ctx, msg);
+}
 
 /*******************************************************************
  Delete a statcache entry.
@@ -257,7 +306,8 @@ static void remove_child_pid(pid_t pid, bool unclean_shutdown)
                }
        }
 
-       DEBUG(0, ("Could not find child %d -- ignoring\n", (int)pid));
+       /* not all forked child processes are added to the children list */
+       DEBUG(1, ("Could not find child %d -- ignoring\n", (int)pid));
 }
 
 /****************************************************************************
@@ -352,28 +402,30 @@ static void smbd_accept_connection(struct tevent_context *ev,
                                     struct smbd_open_socket);
        struct sockaddr_storage addr;
        socklen_t in_addrlen = sizeof(addr);
+       int fd;
        pid_t pid = 0;
        uint64_t unique_id;
 
-       smbd_set_server_fd(accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen));
+       fd = accept(s->fd, (struct sockaddr *)(void *)&addr,&in_addrlen);
+       smbd_set_server_fd(fd);
 
-       if (smbd_server_fd() == -1 && errno == EINTR)
+       if (fd == -1 && errno == EINTR)
                return;
 
-       if (smbd_server_fd() == -1) {
+       if (fd == -1) {
                DEBUG(0,("open_sockets_smbd: accept: %s\n",
                         strerror(errno)));
                return;
        }
 
        if (s->parent->interactive) {
-               smbd_process();
+               smbd_process(smbd_server_conn);
                exit_server_cleanly("end of interactive mode");
                return;
        }
 
        if (!allowable_number_of_smbd_processes()) {
-               close(smbd_server_fd());
+               close(fd);
                smbd_set_server_fd(-1);
                return;
        }
@@ -423,7 +475,8 @@ static void smbd_accept_connection(struct tevent_context *ev,
                }
 
                smbd_setup_sig_term_handler();
-               smbd_setup_sig_hup_handler();
+               smbd_setup_sig_hup_handler(server_event_context(),
+                                          server_messaging_context());
 
                if (!serverid_register(procid_self(),
                                       FLAG_MSG_GENERAL|FLAG_MSG_SMBD
@@ -433,17 +486,19 @@ static void smbd_accept_connection(struct tevent_context *ev,
                                            "serverid.tdb");
                }
 
-               smbd_process();
+               smbd_process(smbd_server_conn);
         exit:
                exit_server_cleanly("end of child");
                return;
-       } else if (pid < 0) {
+       }
+
+       if (pid < 0) {
                DEBUG(0,("smbd_accept_connection: sys_fork() failed: %s\n",
                         strerror(errno)));
        }
 
        /* The parent doesn't need this socket */
-       close(smbd_server_fd());
+       close(fd);
 
        /* Sun May 6 18:56:14 2001 ackley@cs.unm.edu:
                Clear the closed fd info out of server_fd --
@@ -539,11 +594,32 @@ static bool smbd_open_one_socket(struct smbd_parent_context *parent,
        return true;
 }
 
+static bool smbd_parent_housekeeping(const struct timeval *now, void *private_data)
+{
+       time_t printcap_cache_time = (time_t)lp_printcap_cache_time();
+       time_t t = time_mono(NULL);
+
+       DEBUG(5, ("parent housekeeping\n"));
+
+       /* if periodic printcap rescan is enabled, see if it's time to reload */
+       if ((printcap_cache_time != 0)
+        && (t >= (last_printer_reload_time + printcap_cache_time))) {
+               DEBUG( 3,( "Printcap cache time expired.\n"));
+               pcap_cache_reload(server_event_context(),
+                                 smbd_messaging_context(),
+                                 &reload_pcap_change_notify);
+               last_printer_reload_time = t;
+       }
+
+       return true;
+}
+
 /****************************************************************************
  Open the socket communication.
 ****************************************************************************/
 
 static bool open_sockets_smbd(struct smbd_parent_context *parent,
+                             struct messaging_context *msg_ctx,
                              const char *smb_ports)
 {
        int num_interfaces = iface_count();
@@ -672,35 +748,43 @@ static bool open_sockets_smbd(struct smbd_parent_context *parent,
                return false;
        }
 
+       if (!(event_add_idle(smbd_event_context(), NULL,
+                            timeval_set(SMBD_HOUSEKEEPING_INTERVAL, 0),
+                            "parent_housekeeping", smbd_parent_housekeeping,
+                            NULL))) {
+               DEBUG(0, ("Could not add parent_housekeeping event\n"));
+               return false;
+       }
+
         /* Listen to messages */
 
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_SMB_SAM_SYNC, msg_sam_sync);
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_SHUTDOWN, msg_exit_server);
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_SMB_FILE_RENAME, msg_file_was_renamed);
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_SMB_CONF_UPDATED, smb_conf_updated);
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_SMB_STAT_CACHE_DELETE, smb_stat_cache_delete);
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_DEBUG, smbd_msg_debug);
-       brl_register_msgs(smbd_messaging_context());
+       messaging_register(msg_ctx, NULL, MSG_SMB_SAM_SYNC, msg_sam_sync);
+       messaging_register(msg_ctx, NULL, MSG_SHUTDOWN, msg_exit_server);
+       messaging_register(msg_ctx, NULL, MSG_SMB_FILE_RENAME,
+                          msg_file_was_renamed);
+       messaging_register(msg_ctx, server_event_context(), MSG_SMB_CONF_UPDATED,
+                          smb_conf_updated);
+       messaging_register(msg_ctx, NULL, MSG_SMB_STAT_CACHE_DELETE,
+                          smb_stat_cache_delete);
+       messaging_register(msg_ctx, NULL, MSG_DEBUG, smbd_msg_debug);
+       messaging_register(msg_ctx, server_event_context(), MSG_PRINTER_PCAP,
+                          smb_pcap_updated);
+       brl_register_msgs(msg_ctx);
+
+       msg_idmap_register_msgs(msg_ctx);
 
 #ifdef CLUSTER_SUPPORT
        if (lp_clustering()) {
-               ctdbd_register_reconfigure(
-                       messaging_ctdbd_connection(procid_self()));
+               ctdbd_register_reconfigure(messaging_ctdbd_connection());
        }
 #endif
 
 #ifdef DEVELOPER
-       messaging_register(smbd_messaging_context(), NULL,
-                          MSG_SMB_INJECT_FAULT, msg_inject_fault);
+       messaging_register(msg_ctx, NULL, MSG_SMB_INJECT_FAULT,
+                          msg_inject_fault);
 #endif
 
-       if (dns_port != 0) {
+       if (lp_multicast_dns_register() && (dns_port != 0)) {
 #ifdef WITH_DNSSD_SUPPORT
                smbd_setup_mdns_registration(smbd_event_context(),
                                             parent, dns_port);
@@ -754,8 +838,6 @@ static bool init_structs(void )
        if (!init_names())
                return False;
 
-       file_init();
-
        if (!secrets_init())
                return False;
 
@@ -807,10 +889,21 @@ extern void build_options(bool screen);
        POPT_TABLEEND
        };
        struct smbd_parent_context *parent = NULL;
-       TALLOC_CTX *frame = talloc_stackframe(); /* Setup tos. */
+       TALLOC_CTX *frame;
        NTSTATUS status;
        uint64_t unique_id;
 
+       /*
+        * Do this before any other talloc operation
+        */
+       talloc_enable_null_tracking();
+       frame = talloc_stackframe();
+
+       load_case_tables();
+
+       /* Initialize the event context, it will panic on error */
+       smbd_event_context();
+
        smbd_init_globals();
 
        TimeInit();
@@ -854,22 +947,22 @@ extern void build_options(bool screen);
                log_stdout = True;
        }
 
-       setup_logging(argv[0],log_stdout);
+       if (log_stdout) {
+               setup_logging(argv[0], DEBUG_STDOUT);
+       } else {
+               setup_logging(argv[0], DEBUG_FILE);
+       }
 
        if (print_build_options) {
                build_options(True); /* Display output to screen as well as debug */
                exit(0);
        }
 
-       load_case_tables();
-
 #ifdef HAVE_SETLUID
        /* needed for SecureWare on SCO */
        setluid(0);
 #endif
 
-       sec_init();
-
        set_remote_machine_name("smbd", False);
 
        if (interactive && (DEBUGLEVEL >= 9)) {
@@ -885,13 +978,15 @@ extern void build_options(bool screen);
            client problems at a later date. (tridge) */
        generate_random_buffer(NULL, 0);
 
+       /* get initial effective uid and gid */
+       sec_init();
+
        /* make absolutely sure we run as root - to handle cases where people
           are crazy enough to have it setuid */
-
        gain_root_privilege();
        gain_root_group_privilege();
 
-       fault_setup((void (*)(void *))exit_server_fault);
+       fault_setup();
        dump_core_setup("smbd");
 
        /* we are never interested in SIGPIPE */
@@ -922,8 +1017,6 @@ extern void build_options(bool screen);
           so set our umask to 0 */
        umask(0);
 
-       init_sec_ctx();
-
        reopen_logs();
 
        DEBUG(0,("smbd version %s started.\n", samba_version_string()));
@@ -945,11 +1038,23 @@ extern void build_options(bool screen);
                exit(1);
        }
 
+       /* Init the security context and global current_user */
+       init_sec_ctx();
+
        if (smbd_messaging_context() == NULL)
                exit(1);
 
-       if (!reload_services(False))
-               return(-1);     
+       /*
+        * Reloading of the printers will not work here as we don't have a
+        * server info and rpc services set up. It will be called later.
+        */
+       if (!reload_services(smbd_messaging_context(), -1, False)) {
+               exit(1);
+       }
+
+       /* ...NOTE... Log files are working from this point! */
+
+       DEBUG(3,("loaded services\n"));
 
        init_structs();
 
@@ -968,8 +1073,6 @@ extern void build_options(bool screen);
        }
 #endif
 
-       DEBUG(3,( "loaded services\n"));
-
        if (!is_daemon && !is_a_socket(0)) {
                if (!interactive)
                        DEBUG(0,("standard input is not a socket, assuming -D option\n"));
@@ -1016,7 +1119,8 @@ extern void build_options(bool screen);
        smbd_server_conn->msg_ctx = smbd_messaging_context();
 
        smbd_setup_sig_term_handler();
-       smbd_setup_sig_hup_handler();
+       smbd_setup_sig_hup_handler(smbd_event_context(),
+                                  smbd_server_conn->msg_ctx);
 
        /* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
 
@@ -1059,38 +1163,27 @@ extern void build_options(bool screen);
        if (!locking_init())
                exit(1);
 
-       if (!messaging_tdb_parent_init()) {
+       if (!messaging_tdb_parent_init(smbd_event_context())) {
                exit(1);
        }
 
-       if (!notify_internal_parent_init()) {
+       if (!notify_internal_parent_init(smbd_event_context())) {
                exit(1);
        }
 
-       if (!serverid_parent_init()) {
+       if (!serverid_parent_init(smbd_event_context())) {
                exit(1);
        }
 
-       if (!W_ERROR_IS_OK(registry_init_full()))
+       if (!printer_list_parent_init()) {
                exit(1);
-
-#if 0
-       if (!init_svcctl_db())
-                exit(1);
-#endif
-
-       if (!init_system_info()) {
-               DEBUG(0,("ERROR: failed to setup system user info.\n"));
-               return -1;
        }
 
-       if (!print_backend_init(smbd_messaging_context()))
+       if (!W_ERROR_IS_OK(registry_init_full()))
                exit(1);
 
-       if (!init_guest_info()) {
-               DEBUG(0,("ERROR: failed to setup guest info.\n"));
-               return -1;
-       }
+       if (!print_backend_init(smbd_messaging_context()))
+               exit(1);
 
        /* Open the share_info.tdb here, so we don't have to open
           after the fork on every single connection.  This is a small
@@ -1101,6 +1194,43 @@ extern void build_options(bool screen);
                exit(1);
        }
 
+       status = init_system_info();
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
+                         nt_errstr(status)));
+               return -1;
+       }
+
+       if (!init_guest_info()) {
+               DEBUG(0,("ERROR: failed to setup guest info.\n"));
+               return -1;
+       }
+
+       if (!file_init(smbd_server_conn)) {
+               DEBUG(0, ("ERROR: file_init failed\n"));
+               return -1;
+       }
+
+       if (is_daemon && !interactive) {
+               const char *rpcsrv_type;
+
+               rpcsrv_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
+                                                  "rpc_server", "epmapper",
+                                                  "none");
+               if (StrCaseCmp(rpcsrv_type, "daemon") == 0) {
+                       start_epmd(smbd_event_context(),
+                                  smbd_server_conn->msg_ctx);
+               }
+       }
+
+       if (!dcesrv_ep_setup(smbd_event_context(), smbd_server_conn->msg_ctx)) {
+               exit(1);
+       }
+
+       /* Publish nt printers, this requires a working winreg pipe */
+       pcap_cache_reload(server_event_context(), smbd_messaging_context(),
+                         &reload_printers);
+
        /* only start the background queue daemon if we are 
           running as a daemon -- bad things will happen if
           smbd is launched via inetd and we fork a copy of 
@@ -1108,7 +1238,8 @@ extern void build_options(bool screen);
 
        if (is_daemon && !interactive
            && lp_parm_bool(-1, "smbd", "backgroundqueue", true)) {
-               start_background_queue();
+               start_background_queue(smbd_event_context(),
+                                      smbd_messaging_context());
        }
 
        if (!is_daemon) {
@@ -1130,7 +1261,7 @@ extern void build_options(bool screen);
                /* Stop zombies */
                smbd_setup_sig_chld_handler();
 
-               smbd_process();
+               smbd_process(smbd_server_conn);
 
                exit_server_cleanly(NULL);
                return(0);
@@ -1142,7 +1273,7 @@ extern void build_options(bool screen);
        }
        parent->interactive = interactive;
 
-       if (!open_sockets_smbd(parent, ports))
+       if (!open_sockets_smbd(parent, smbd_messaging_context(), ports))
                exit_server("open_sockets_smbd() failed");
 
        TALLOC_FREE(frame);