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px4-firmware/apps/examples/thttpd/main.c

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/****************************************************************************
* examples/thttpd/main.c
*
* Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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 <nuttx/config.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <debug.h>
#include <net/if.h>
#include <netinet/ether.h>
#include <net/uip/uip-arp.h>
#include <apps/netutils/uiplib.h>
#include <apps/netutils/thttpd.h>
#include <nuttx/ramdisk.h>
#include <nuttx/binfmt.h>
#include <nuttx/nxflat.h>
#ifdef CONFIG_NET_SLIP
# include <nuttx/net.h>
#endif
#include "content/romfs.h"
#include "content/symtab.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Check configuration. This is not all of the configuration settings that
* are required -- only the more obvious.
*/
#if CONFIG_NFILE_DESCRIPTORS < 1
# error "You must provide file descriptors via CONFIG_NFILE_DESCRIPTORS in your configuration file"
#endif
#ifndef CONFIG_NXFLAT
# error "You must select CONFIG_NXFLAT in your configuration file"
#endif
#ifndef CONFIG_FS_ROMFS
# error "You must select CONFIG_FS_ROMFS in your configuration file"
#endif
#ifdef CONFIG_DISABLE_MOUNTPOINT
# error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file"
#endif
#ifdef CONFIG_BINFMT_DISABLE
# error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
#endif
/* SLIP-specific configuration */
#ifdef CONFIG_NET_SLIP
/* No MAC address operations */
# undef CONFIG_EXAMPLE_THTTPD_NOMAC
/* TTY device to use */
# ifndef CONFIG_NET_SLIPTTY
# define CONFIG_NET_SLIPTTY "/dev/ttyS1"
# endif
# define SLIP_DEVNO 0
# define NET_DEVNAME "sl0"
#else
/* Otherwise, use the standard ethernet device name */
# define NET_DEVNAME "eth0"
#endif
/* Describe the ROMFS file system */
#define SECTORSIZE 512
#define NSECTORS(b) (((b)+SECTORSIZE-1)/SECTORSIZE)
#define ROMFSDEV "/dev/ram0"
#define MOUNTPT CONFIG_THTTPD_PATH
#ifdef CONFIG_CPP_HAVE_VARARGS
# ifdef CONFIG_DEBUG
# define message(...) lib_lowprintf(__VA_ARGS__)
# define msgflush()
# else
# define message(...) printf(__VA_ARGS__)
# define msgflush() fflush(stdout)
# endif
#else
# ifdef CONFIG_DEBUG
# define message lib_lowprintf
# define msgflush()
# else
# define message printf
# define msgflush() fflush(stdout)
# endif
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/* These values must be provided by the user before the THTTPD task daemon
* is started:
*
* g_thttpdsymtab: A symbol table describing all of the symbols exported
* from the base system. These symbols are used to bind address references
* in CGI programs to NuttX.
* g_nsymbols: The number of symbols in g_thttpdsymtab[].
*/
FAR const struct symtab_s *g_thttpdsymtab;
int g_thttpdnsymbols;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* user_start
****************************************************************************/
int user_start(int argc, char *argv[])
{
struct in_addr addr;
#ifdef CONFIG_EXAMPLE_THTTPD_NOMAC
uint8_t mac[IFHWADDRLEN];
#endif
char *thttpd_argv = "thttpd";
int ret;
/* Configure SLIP */
#ifdef CONFIG_NET_SLIP
ret = slip_initialize(SLIP_DEVNO, CONFIG_NET_SLIPTTY);
if (ret < 0)
{
message("ERROR: SLIP initialization failed: %d\n", ret);
exit(1);
}
#endif
/* Many embedded network interfaces must have a software assigned MAC */
#ifdef CONFIG_EXAMPLE_THTTPD_NOMAC
message("Assigning MAC\n");
mac[0] = 0x00;
mac[1] = 0xe0;
mac[2] = 0xb0;
mac[3] = 0x0b;
mac[4] = 0xba;
mac[5] = 0xbe;
uip_setmacaddr(NET_DEVNAME, mac);
#endif
/* Set up our host address */
message("Setup network addresses\n");
addr.s_addr = HTONL(CONFIG_THTTPD_IPADDR);
uip_sethostaddr(NET_DEVNAME, &addr);
/* Set up the default router address */
addr.s_addr = HTONL(CONFIG_EXAMPLE_THTTPD_DRIPADDR);
uip_setdraddr(NET_DEVNAME, &addr);
/* Setup the subnet mask */
addr.s_addr = HTONL(CONFIG_EXAMPLE_THTTPD_NETMASK);
uip_setnetmask(NET_DEVNAME, &addr);
/* Initialize the NXFLAT binary loader */
message("Initializing the NXFLAT binary loader\n");
ret = nxflat_initialize();
if (ret < 0)
{
message("ERROR: Initialization of the NXFLAT loader failed: %d\n", ret);
exit(2);
}
/* Create a ROM disk for the ROMFS filesystem */
message("Registering romdisk\n");
ret = romdisk_register(0, (uint8_t*)romfs_img, NSECTORS(romfs_img_len), SECTORSIZE);
if (ret < 0)
{
message("ERROR: romdisk_register failed: %d\n", ret);
nxflat_uninitialize();
exit(1);
}
/* Mount the file system */
message("Mounting ROMFS filesystem at target=%s with source=%s\n",
MOUNTPT, ROMFSDEV);
ret = mount(ROMFSDEV, MOUNTPT, "romfs", MS_RDONLY, NULL);
if (ret < 0)
{
message("ERROR: mount(%s,%s,romfs) failed: %s\n",
ROMFSDEV, MOUNTPT, errno);
nxflat_uninitialize();
}
/* Start THTTPD. At present, symbol table info is passed via global variables */
g_thttpdsymtab = exports;
g_thttpdnsymbols = NEXPORTS;
message("Starting THTTPD\n");
msgflush();
thttpd_main(1, &thttpd_argv);
message("THTTPD terminated\n");
msgflush();
return 0;
}
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