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/*
This file is part of libmicrohttpd
(C) 2007 Christian Grothoff (and other contributing authors)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file fileserver_example.c
* @brief example for how to use libmicrohttpd to serve files (with directory support)
* @author Christian Grothoff
*/
#include "platform.h"
#include <dirent.h>
#include <microhttpd.h>
#include <unistd.h>
#define PAGE "<html><head><title>File not found</title></head><body>File not found</body></html>"
static int
file_reader (void *cls, uint64_t pos, char *buf, int max)
{
FILE *file = cls;
fseek (file, pos, SEEK_SET);
return fread (buf, 1, max, file);
}
static int
dir_reader (void *cls, uint64_t pos, char *buf, int max)
{
struct dirent *e;
if (max < 512)
return 0;
do
{
e = readdir (cls);
if (e == NULL)
return -1;
} while (e->d_name[0] == '.');
return snprintf (buf, max,
"<a href=\"/%s\">%s</a><br>",
e->d_name,
e->d_name);
}
static int
ahc_echo (void *cls,
struct MHD_Connection *connection,
const char *url,
const char *method,
const char *version,
const char *upload_data,
size_t *upload_data_size, void **ptr)
{
static int aptr;
struct MHD_Response *response;
int ret;
FILE *file;
struct stat buf;
if (0 != strcmp (method, MHD_HTTP_METHOD_GET))
return MHD_NO; /* unexpected method */
if (&aptr != *ptr)
{
/* do never respond on first call */
*ptr = &aptr;
return MHD_YES;
}
*ptr = NULL; /* reset when done */
file = fopen (&url[1], "rb");
if (file == NULL)
{
response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
32 * 1024,
&dir_reader,
opendir ("."),
(MHD_ContentReaderFreeCallback) &closedir);
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
}
else
{
stat (&url[1], &buf);
response = MHD_create_response_from_callback (buf.st_size, 32 * 1024, /* 32k page size */
&file_reader,
file,
(MHD_ContentReaderFreeCallback)
& fclose);
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
}
return ret;
}
int
main (int argc, char *const *argv)
{
struct MHD_Daemon *d;
if (argc != 2)
{
printf ("%s PORT\n", argv[0]);
return 1;
}
d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_DEBUG,
atoi (argv[1]),
NULL, NULL, &ahc_echo, PAGE, MHD_OPTION_END);
if (d == NULL)
return 1;
while (1) sleep (1);
MHD_stop_daemon (d);
return 0;
}
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