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nuttx-bb/apps/examples/ftpd/ftpd_main.c

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/****************************************************************************
* examples/telnetd/shell.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sched.h>
#include <errno.h>
#include <debug.h>
#include <netinet/in.h>
#include <apps/netutils/uiplib.h>
#include <apps/netutils/ftpd.h>
#include "ftpd.h"
/****************************************************************************
* 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 },
};
#define NACCOUNTS (sizeof(g_ftpdaccounts) / sizeof(struct fptd_account_s))
/****************************************************************************
* Public Data
****************************************************************************/
/* To minimize the probability of name collisitions, 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_EXAMPLE_FTPD_NOMAC
uint8_t mac[IFHWADDRLEN];
#endif
/* Many embedded network interfaces must have a software assigned MAC */
#ifdef CONFIG_EXAMPLE_FTPD_NOMAC
mac[0] = 0x00;
mac[1] = 0xe0;
mac[2] = 0xde;
mac[3] = 0xad;
mac[4] = 0xbe;
mac[5] = 0xef;
uip_setmacaddr("eth0", mac);
#endif
/* Set up our host address */
addr.s_addr = HTONL(CONFIG_EXAMPLE_FTPD_IPADDR);
uip_sethostaddr("eth0", &addr);
/* Set up the default router address */
addr.s_addr = HTONL(CONFIG_EXAMPLE_FTPD_DRIPADDR);
uip_setdraddr("eth0", &addr);
/* Setup the subnet mask */
addr.s_addr = HTONL(CONFIG_EXAMPLE_FTPD_NETMASK);
uip_setnetmask("eth0", &addr);
#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 < NACCOUNTS; i++)
{
account = &g_ftpdaccounts[i];
printf("%d. %s account: USER=%s PASSWORD=%s HOME=%s\n", i+1,
(account->flags & FTPD_ACCOUNTFLAG_SYSTEM) != 0 ? "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);
}
}
/****************************************************************************
* Name: ftpd_daemon
****************************************************************************/
int ftpd_daemon(int s_argc, char **s_argv)
{
FTPD_SESSION handle;
int ret;
/* The FTPD daemon has been started */
#ifdef CONFIG_NSH_BUILTIN_APPS
g_ftpdglob.running = true;
#endif
printf("FTP daemon [%d] started\n", g_ftpdglob.pid);
/* Open FTPD */
handle = ftpd_open();
if (!handle)
{
printf("FTP daemon [%d] failed to open FTPD\n", g_ftpdglob.pid);
#ifdef CONFIG_NSH_BUILTIN_APPS
g_ftpdglob.running = false;
g_ftpdglob.stop = false;
#endif
g_ftpdglob.pid = -1;
return EXIT_FAILURE;
}
/* Configure acounts */
(void)ftpd_accounts(handle);
/* Then drive the FTPD server. */
#ifdef CONFIG_NSH_BUILTIN_APPS
while (g_ftpdglob.stop == 0)
#else
for (;;)
#endif
{
/* 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 (we can get here only if
* CONFIG_NSH_BUILTIN_APPS is defined).
*/
#ifdef CONFIG_NSH_BUILTIN_APPS
printf("FTP daemon [%d] stopping\n", g_ftpdglob.pid);
g_ftpdglob.running = false;
g_ftpdglob.stop = false;
g_ftpdglob.pid = -1;
ftpd_close(handle);
#endif
return EXIT_SUCCESS;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: ftpd_main
****************************************************************************/
int ftpd_main(int s_argc, char **s_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;
#ifdef CONFIG_NSH_BUILTIN_APPS
g_ftpdglob.stop = false;
g_ftpdglob.running = false;
#endif
}
/* Then start the new daemon (if it is not already running) */
#ifdef CONFIG_NSH_BUILTIN_APPS
if (g_ftpdglob.stop && g_ftpdglob.running)
{
printf("Waiting for FTP daemon [%d] to stop\n", g_ftpdglob.pid);
return EXIT_FAILURE;
}
else
#endif
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, NULL);
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
****************************************************************************/
#ifdef CONFIG_NSH_BUILTIN_APPS
int ftpd_stop(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;
}
#endif
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