/* * Unix SMB/CIFS implementation. * * SMBD RPC service callbacks * * Copyright (c) 2011 Andreas Schneider * * 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 3 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, see . */ #include "includes.h" #include "serverid.h" #include "../librpc/gen_ndr/srv_epmapper.h" #include "rpc_server/rpc_server.h" #include "rpc_server/epmapper/srv_epmapper.h" #include "messages.h" #define DAEMON_NAME "epmd" void start_epmd(struct tevent_context *ev_ctx, struct messaging_context *msg_ctx); static bool epmd_open_sockets(struct tevent_context *ev_ctx, struct messaging_context *msg_ctx) { uint32_t num_ifs = iface_count(); uint16_t port; uint32_t i; if (lp_interfaces() && lp_bind_interfaces_only()) { /* * We have been given an interfaces line, and been told to only * bind to those interfaces. Create a socket per interface and * bind to only these. */ /* Now open a listen socket for each of the interfaces. */ for(i = 0; i < num_ifs; i++) { const struct sockaddr_storage *ifss = iface_n_sockaddr_storage(i); port = setup_dcerpc_ncacn_tcpip_socket(ev_ctx, msg_ctx, ndr_table_epmapper.syntax_id, ifss, 135); if (port == 0) { return false; } } } else { const char *sock_addr = lp_socket_address(); const char *sock_ptr; char *sock_tok; if (strequal(sock_addr, "0.0.0.0") || strequal(sock_addr, "::")) { #if HAVE_IPV6 sock_addr = "::"; #else sock_addr = "0.0.0.0"; #endif } for (sock_ptr = sock_addr; next_token_talloc(talloc_tos(), &sock_ptr, &sock_tok, " \t,"); ) { struct sockaddr_storage ss; /* open an incoming socket */ if (!interpret_string_addr(&ss, sock_tok, AI_NUMERICHOST|AI_PASSIVE)) { continue; } port = setup_dcerpc_ncacn_tcpip_socket(ev_ctx, msg_ctx, ndr_table_epmapper.syntax_id, &ss, 135); if (port == 0) { return false; } } } return true; } static void epmd_reopen_logs(void) { char *lfile = lp_logfile(); int rc; if (lfile == NULL || lfile[0] == '\0') { rc = asprintf(&lfile, "%s/log.%s", get_dyn_LOGFILEBASE(), DAEMON_NAME); if (rc > 0) { lp_set_logfile(lfile); SAFE_FREE(lfile); } } else { if (strstr(lfile, DAEMON_NAME) == NULL) { rc = asprintf(&lfile, "%s.%s", lp_logfile(), DAEMON_NAME); if (rc > 0) { lp_set_logfile(lfile); SAFE_FREE(lfile); } } } reopen_logs(); } static void epmd_smb_conf_updated(struct messaging_context *msg, void *private_data, uint32_t msg_type, struct server_id server_id, DATA_BLOB *data) { DEBUG(10, ("Got message saying smb.conf was updated. Reloading.\n")); change_to_root_user(); epmd_reopen_logs(); } static void epmd_sig_term_handler(struct tevent_context *ev, struct tevent_signal *se, int signum, int count, void *siginfo, void *private_data) { rpc_epmapper_shutdown(); exit_server_cleanly("termination signal"); } static void epmd_setup_sig_term_handler(struct tevent_context *ev_ctx) { struct tevent_signal *se; se = tevent_add_signal(ev_ctx, ev_ctx, SIGTERM, 0, epmd_sig_term_handler, NULL); if (se == NULL) { exit_server("failed to setup SIGTERM handler"); } } static void epmd_sig_hup_handler(struct tevent_context *ev, struct tevent_signal *se, int signum, int count, void *siginfo, void *private_data) { change_to_root_user(); DEBUG(1,("Reloading printers after SIGHUP\n")); epmd_reopen_logs(); } static void epmd_setup_sig_hup_handler(struct tevent_context *ev_ctx, struct messaging_context *msg_ctx) { struct tevent_signal *se; se = tevent_add_signal(ev_ctx, ev_ctx, SIGHUP, 0, epmd_sig_hup_handler, msg_ctx); if (se == NULL) { exit_server("failed to setup SIGHUP handler"); } } static bool epmapper_shutdown_cb(void *ptr) { srv_epmapper_cleanup(); return true; } void start_epmd(struct tevent_context *ev_ctx, struct messaging_context *msg_ctx) { struct rpc_srv_callbacks epmapper_cb; NTSTATUS status; pid_t pid; bool ok; int rc; epmapper_cb.init = NULL; epmapper_cb.shutdown = epmapper_shutdown_cb; epmapper_cb.private_data = NULL; DEBUG(1, ("Forking Endpoint Mapper Daemon\n")); pid = sys_fork(); if (pid == -1) { DEBUG(0, ("Failed to fork Endpoint Mapper [%s], aborting ...\n", strerror(errno))); exit(1); } if (pid) { /* parent */ return; } /* child */ close_low_fds(false); status = reinit_after_fork(msg_ctx, ev_ctx, procid_self(), true); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("reinit_after_fork() failed\n")); smb_panic("reinit_after_fork() failed"); } epmd_reopen_logs(); epmd_setup_sig_term_handler(ev_ctx); epmd_setup_sig_hup_handler(ev_ctx, msg_ctx); ok = serverid_register(procid_self(), FLAG_MSG_GENERAL|FLAG_MSG_SMBD |FLAG_MSG_PRINT_GENERAL); if (!ok) { DEBUG(0, ("Failed to register serverid in epmd!\n")); exit(1); } messaging_register(msg_ctx, ev_ctx, MSG_SMB_CONF_UPDATED, epmd_smb_conf_updated); status = rpc_epmapper_init(&epmapper_cb); if (!NT_STATUS_IS_OK(status)) { DEBUG(0, ("Failed to register epmd rpc inteface! (%s)\n", nt_errstr(status))); exit(1); } ok = setup_dcerpc_ncalrpc_socket(ev_ctx, msg_ctx, ndr_table_epmapper.syntax_id, "EPMAPPER", srv_epmapper_delete_endpoints); if (!ok) { DEBUG(0, ("Failed to open epmd ncalrpc pipe!\n")); exit(1); } ok = epmd_open_sockets(ev_ctx, msg_ctx); if (!ok) { DEBUG(0, ("Failed to open epmd tcpip sockets!\n")); exit(1); } ok = setup_named_pipe_socket("epmapper", ev_ctx); if (!ok) { DEBUG(0, ("Failed to open epmd named pipe!\n")); exit(1); } DEBUG(1, ("Endpoint Mapper Daemon Started (%d)\n", getpid())); /* loop forever */ rc = tevent_loop_wait(ev_ctx); /* should not be reached */ DEBUG(0,("background_queue: tevent_loop_wait() exited with %d - %s\n", rc, (rc == 0) ? "out of events" : strerror(errno))); exit(1); } /* vim: set ts=8 sw=8 noet cindent ft=c.doxygen: */