mirror of
https://github.com/samba-team/samba.git
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169 lines
4.2 KiB
C
169 lines
4.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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process incoming connections and fork a samba3 in inetd mode
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Copyright (C) Stefan Metzmacher 2008
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/service.h"
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#include "libcli/smb2/smb2.h"
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#include "system/network.h"
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#include "lib/socket/netif.h"
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#include "param/param.h"
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#include "dynconfig/dynconfig.h"
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#include "smbd/process_model.h"
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/*
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initialise a server_context from a open socket and register a event handler
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for reading from that socket
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*/
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static void samba3_smb_accept(struct stream_connection *conn)
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{
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int i;
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int fd = socket_get_fd(conn->socket);
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const char *prog;
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char *argv[2];
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char *reason;
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extern char **environ;
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close(0);
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close(1);
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dup2(fd, 0);
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dup2(fd, 1);
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dup2(fd, 2);
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for (i=3;i<256;i++) {
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close(i);
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}
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prog = lp_parm_string(conn->lp_ctx, NULL, "samba3", "smbd");
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if (prog == NULL) {
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argv[0] = talloc_asprintf(conn, "%s/%s", dyn_BINDIR, "smbd3");
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}
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else {
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argv[0] = talloc_strdup(conn, prog);
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}
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if (argv[0] == NULL) {
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stream_terminate_connection(conn, "out of memory");
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return;
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}
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argv[1] = NULL;
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execve(argv[0], argv, environ);
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/*
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* Should never get here
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*/
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reason = talloc_asprintf(conn, "Could not execute %s", argv[0]);
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if (reason == NULL) {
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stream_terminate_connection(conn, "out of memory");
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return;
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}
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stream_terminate_connection(conn, reason);
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talloc_free(reason);
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}
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static const struct stream_server_ops samba3_smb_stream_ops = {
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.name = "samba3",
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.accept_connection = samba3_smb_accept,
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};
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/*
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setup a listening socket on all the SMB ports for a particular address
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*/
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static NTSTATUS samba3_add_socket(struct tevent_context *event_context,
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struct loadparm_context *lp_ctx,
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const struct model_ops *model_ops,
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const char *address)
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{
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const char **ports = lp_smb_ports(lp_ctx);
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int i;
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NTSTATUS status;
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for (i=0;ports[i];i++) {
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uint16_t port = atoi(ports[i]);
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if (port == 0) continue;
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status = stream_setup_socket(event_context, lp_ctx,
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model_ops, &samba3_smb_stream_ops,
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"ip", address, &port,
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lp_socket_options(lp_ctx),
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NULL);
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NT_STATUS_NOT_OK_RETURN(status);
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}
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return NT_STATUS_OK;
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}
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/*
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open the smb server sockets
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*/
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static void samba3_smb_task_init(struct task_server *task)
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{
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NTSTATUS status;
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const struct model_ops *model_ops;
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model_ops = process_model_startup(task->event_ctx, "standard");
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if (model_ops == NULL) {
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goto failed;
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}
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task_server_set_title(task, "task[samba3_smb]");
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if (lp_interfaces(task->lp_ctx)
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&& lp_bind_interfaces_only(task->lp_ctx)) {
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int num_interfaces;
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int i;
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struct interface *ifaces;
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load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
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num_interfaces = iface_count(ifaces);
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/* We have been given an interfaces line, and been
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told to only bind to those interfaces. Create a
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socket per interface and bind to only these.
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*/
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for(i = 0; i < num_interfaces; i++) {
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const char *address = iface_n_ip(ifaces, i);
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status = samba3_add_socket(task->event_ctx,
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task->lp_ctx,
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model_ops, address);
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if (!NT_STATUS_IS_OK(status)) goto failed;
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}
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} else {
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/* Just bind to lp_socket_address() (usually 0.0.0.0) */
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status = samba3_add_socket(task->event_ctx, task->lp_ctx,
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model_ops,
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lp_socket_address(task->lp_ctx));
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if (!NT_STATUS_IS_OK(status)) goto failed;
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}
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return;
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failed:
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task_server_terminate(task, "Failed to startup samba3 smb task", true);
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}
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/* called at smbd startup - register ourselves as a server service */
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NTSTATUS server_service_samba3_smb_init(void)
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{
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return register_server_service("samba3_smb", samba3_smb_task_init);
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}
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