/* Unix SMB/CIFS implementation. process incoming connections and fork a samba3 in inetd mode Copyright (C) Stefan Metzmacher 2008 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 <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "smbd/service.h" #include "libcli/smb2/smb2.h" #include "system/network.h" #include "lib/socket/netif.h" #include "param/param.h" #include "dynconfig/dynconfig.h" #include "smbd/process_model.h" /* initialise a server_context from a open socket and register a event handler for reading from that socket */ static void samba3_smb_accept(struct stream_connection *conn) { int i; int fd = socket_get_fd(conn->socket); const char *prog; char *argv[2]; char *reason; extern char **environ; close(0); close(1); dup2(fd, 0); dup2(fd, 1); dup2(fd, 2); for (i=3;i<256;i++) { close(i); } prog = lpcfg_parm_string(conn->lp_ctx, NULL, "samba3", "smbd"); if (prog == NULL) { argv[0] = talloc_asprintf(conn, "%s/%s", dyn_BINDIR, "smbd3"); } else { argv[0] = talloc_strdup(conn, prog); } if (argv[0] == NULL) { stream_terminate_connection(conn, "out of memory"); return; } argv[1] = NULL; execve(argv[0], argv, environ); /* * Should never get here */ reason = talloc_asprintf(conn, "Could not execute %s", argv[0]); if (reason == NULL) { stream_terminate_connection(conn, "out of memory"); return; } stream_terminate_connection(conn, reason); talloc_free(reason); } static const struct stream_server_ops samba3_smb_stream_ops = { .name = "samba3", .accept_connection = samba3_smb_accept, }; /* setup a listening socket on all the SMB ports for a particular address */ static NTSTATUS samba3_add_socket(struct tevent_context *event_context, struct loadparm_context *lp_ctx, const struct model_ops *model_ops, const char *address) { const char **ports = lpcfg_smb_ports(lp_ctx); int i; NTSTATUS status; for (i=0;ports[i];i++) { uint16_t port = atoi(ports[i]); if (port == 0) continue; status = stream_setup_socket(event_context, lp_ctx, model_ops, &samba3_smb_stream_ops, "ip", address, &port, lpcfg_socket_options(lp_ctx), NULL); NT_STATUS_NOT_OK_RETURN(status); } return NT_STATUS_OK; } /* open the smb server sockets */ static void samba3_smb_task_init(struct task_server *task) { NTSTATUS status; const struct model_ops *model_ops; model_ops = process_model_startup(task->event_ctx, "standard"); if (model_ops == NULL) { goto failed; } task_server_set_title(task, "task[samba3_smb]"); if (lpcfg_interfaces(task->lp_ctx) && lpcfg_bind_interfaces_only(task->lp_ctx)) { int num_interfaces; int i; struct interface *ifaces; load_interfaces(task, lpcfg_interfaces(task->lp_ctx), &ifaces); num_interfaces = iface_count(ifaces); /* 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. */ for(i = 0; i < num_interfaces; i++) { const char *address = iface_n_ip(ifaces, i); status = samba3_add_socket(task->event_ctx, task->lp_ctx, model_ops, address); if (!NT_STATUS_IS_OK(status)) goto failed; } } else { /* Just bind to lpcfg_socket_address() (usually 0.0.0.0) */ status = samba3_add_socket(task->event_ctx, task->lp_ctx, model_ops, lpcfg_socket_address(task->lp_ctx)); if (!NT_STATUS_IS_OK(status)) goto failed; } return; failed: task_server_terminate(task, "Failed to startup samba3 smb task", true); } /* called at smbd startup - register ourselves as a server service */ NTSTATUS server_service_samba3_smb_init(void) { return register_server_service("samba3_smb", samba3_smb_task_init); }