px4-firmware/apps/examples/wget/host.c

101 lines
3.7 KiB
C

/****************************************************************************
* examples/wget/host.c
*
* Copyright (C) 2009 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 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <apps/netutils/webclient.h>
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: callback
****************************************************************************/
static void callback(FAR char **buffer, int offset, int datend,
FAR int *buflen, FAR void *arg)
{
(void)write(1, &((*buffer)[offset]), datend - offset);
}
/****************************************************************************
* Name: show_usage
****************************************************************************/
static void show_usage(const char *progname, int exitcode)
{
fprintf(stderr, "USAGE: %s <url>\n", progname);
exit(exitcode);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: main
****************************************************************************/
int main(int argc, char **argv, char **envp)
{
char buffer[1024];
int ret;
if (argc != 2)
{
show_usage(argv[0], 1);
}
printf("WGET: Getting %s\n", argv[1]);
ret = wget(argv[1], buffer, 1024, callback, NULL);
if (ret < 0)
{
fprintf(stderr, "WGET: wget failed: %s\n", strerror(errno));
}
return 0;
}