/****************************************************************************
* apps/examples/ftpd/ftpd_main.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sched.h>
#include <errno.h>
#include <debug.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "netutils/netlib.h"
#include "netutils/ftpd.h"
#include "ftpd.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* If FTP is used and both IPv6 and IPv4 are enabled, then we need to
* pick one.
*/
#ifdef CONFIG_NET_IPv6
# define ADDR_FAMILY AF_INET6
#else
# define ADDR_FAMILY AF_INET
#endif
/****************************************************************************
* Private Data
****************************************************************************/
static const struct fptd_account_s g_ftpdaccounts[] =
{
{ FTPD_ACCOUNTFLAG_SYSTEM, "root", "abc123", NULL },
{ FTPD_ACCOUNTFLAG_GUEST, "ftp", NULL, NULL },
{ FTPD_ACCOUNTFLAG_GUEST, "anonymous", NULL, NULL },
};
/****************************************************************************
* Public Data
****************************************************************************/
/* To minimize the probability of name collisions, all FTPD example
* global data is maintained in a single instance of a structure.
*/
struct ftpd_globals_s g_ftpdglob;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: fptd_netinit
****************************************************************************/
static void fptd_netinit(void)
{
#ifndef CONFIG_EXAMPLES_FTPD_NONETINIT
struct in_addr addr;
#ifdef CONFIG_EXAMPLES_FTPD_NOMAC
uint8_t mac[IFHWADDRLEN];
#endif
/* Many embedded network interfaces must have a software assigned MAC */
#ifdef CONFIG_EXAMPLES_FTPD_NOMAC
mac[0] = 0x00;
mac[1] = 0xe0;
mac[2] = 0xde;
mac[3] = 0xad;
mac[4] = 0xbe;
mac[5] = 0xef;
netlib_setmacaddr("eth0", mac);
#endif
/* Set up our host address */
addr.s_addr = HTONL(CONFIG_EXAMPLES_FTPD_IPADDR);
netlib_set_ipv4addr("eth0", &addr);
/* Set up the default router address */
addr.s_addr = HTONL(CONFIG_EXAMPLES_FTPD_DRIPADDR);
netlib_set_dripv4addr("eth0", &addr);
/* Setup the subnet mask */
addr.s_addr = HTONL(CONFIG_EXAMPLES_FTPD_NETMASK);
netlib_set_ipv4netmask("eth0", &addr);
/* New versions of netlib_set_ipvXaddr will not bring the network up,
* So ensure the network is really up at this point.
*/
netlib_ifup("eth0");
#endif /* CONFIG_EXAMPLES_FTPD_NONETINIT */
}
/****************************************************************************
* Name: ftpd_accounts
****************************************************************************/
static void ftpd_accounts(FTPD_SESSION handle)
{
FAR const struct fptd_account_s *account;
int i;
printf("Adding accounts:\n");
for (i = 0; i < nitems(g_ftpdaccounts); i++)
{
account = &g_ftpdaccounts[i];
printf("%d. %s account: USER=%s PASSWORD=%s HOME=%s\n", i + 1,
(account->flags & FTPD_ACCOUNTFLAG_SYSTEM) ? "Root" : "User",
(!account->user) ? "(none)" : account->user,
(!account->password) ? "(none)" : account->password,
(!account->home) ? "(none)" : account->home);
ftpd_adduser(handle, account->flags, account->user,
account->password, account->home);
}
}
static void hint(void)
{
fprintf(stderr,
"Usage: ftpd [-46] \n\
\t-4 Use IPv4\n\
\t-6 Use IPv6\n\
");
}
/****************************************************************************
* Name: ftpd_daemon
****************************************************************************/
int ftpd_daemon(int s_argc, char **s_argv)
{
FTPD_SESSION handle;
int ret = EXIT_FAILURE;
int option;
int family = AF_UNSPEC;
/* The FTPD daemon has been started */
g_ftpdglob.running = true;
printf("FTP daemon [%d] started\n", g_ftpdglob.pid);
while ((option = getopt(s_argc, &s_argv[1], "46")) != ERROR)
{
switch (option)
{
case '4':
family = AF_INET;
break;
case '6':
family = AF_INET6;
break;
default:
break;
}
}
if (family == AF_UNSPEC)
{
hint();
goto out;
}
if ((optind + 1) < s_argc)
{
fprintf(stderr, "%s: Too many arguments\n", s_argv[1]);
hint();
goto out;
}
/* Open FTPD */
handle = ftpd_open(CONFIG_EXAMPLES_FTPD_PORT, family);
if (!handle)
{
printf("FTP daemon [%d] failed to open FTPD\n", g_ftpdglob.pid);
goto out;
}
/* Configure accounts */
ftpd_accounts(handle);
/* Then drive the FTPD server. */
while (g_ftpdglob.stop == 0)
{
/* If ftpd_session returns success, it means that a new FTP session
* has been started.
*/
ret = ftpd_session(handle, 5000);
/* If any interesting happened (i.e., any thing other than a timeout),
* then report the interesting event.
*/
if (ret != -ETIMEDOUT)
{
printf("FTP daemon [%d] ftpd_session returned %d\n",
g_ftpdglob.pid, ret);
}
}
/* Close the FTPD server and exit. */
printf("FTP daemon [%d] stopping\n", g_ftpdglob.pid);
ftpd_close(handle);
ret = EXIT_SUCCESS;
out:
g_ftpdglob.running = false;
g_ftpdglob.stop = false;
g_ftpdglob.pid = -1;
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: ftpd_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
/* Check if we have already initialized the network */
if (!g_ftpdglob.initialized)
{
/* Bring up the network */
printf("Initializing the network\n");
fptd_netinit();
/* Initialize daemon state */
g_ftpdglob.initialized = true;
g_ftpdglob.pid = -1;
g_ftpdglob.stop = false;
g_ftpdglob.running = false;
}
/* Then start the new daemon (if it is not already running) */
if (g_ftpdglob.stop && g_ftpdglob.running)
{
printf("Waiting for FTP daemon [%d] to stop\n", g_ftpdglob.pid);
return EXIT_FAILURE;
}
if (!g_ftpdglob.running)
{
printf("Starting the FTP daemon\n");
g_ftpdglob.pid = task_create("FTP daemon", CONFIG_EXAMPLES_FTPD_PRIO,
CONFIG_EXAMPLES_FTPD_STACKSIZE,
ftpd_daemon, argv);
if (g_ftpdglob.pid < 0)
{
printf("Failed to start the FTP daemon: %d\n", errno);
return EXIT_FAILURE;
}
}
else
{
printf("FTP daemon [%d] is running\n", g_ftpdglob.pid);
}
return EXIT_SUCCESS;
}
/****************************************************************************
* Name: ftpd_stop
****************************************************************************/
int ftpd_stop_main(int s_argc, char **s_argv)
{
if (!g_ftpdglob.initialized || !g_ftpdglob.running)
{
printf("The FTP daemon not running\n");
return EXIT_FAILURE;
}
printf("Stopping the FTP daemon, pid=%d\n", g_ftpdglob.pid);
g_ftpdglob.stop = true;
return EXIT_SUCCESS;
}