mirror of
https://github.com/lwip-tcpip/lwip.git
synced 2024-08-25 23:52:51 +00:00
... from http://git.savannah.gnu.org/cgit/lwip/lwip-contrib.git/ into contrib/ subdir, STABLE-2_1_0_RELEASE tag lwIP contrib is now officially frozen TODO: Fix build
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/**
|
|
* @file
|
|
* HTTPD simple CGI example
|
|
*
|
|
* This file demonstrates how to add support for basic CGI.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2017 Simon Goldschmidt
|
|
* All rights reserved.
|
|
*
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Simon Goldschmidt <goldsimon@gmx.de>
|
|
*
|
|
*/
|
|
|
|
#include "lwip/opt.h"
|
|
#include "cgi_example.h"
|
|
|
|
#include "lwip/apps/httpd.h"
|
|
|
|
#include "lwip/def.h"
|
|
#include "lwip/mem.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
/** define LWIP_HTTPD_EXAMPLE_CGI_SIMPLE to 1 to enable this cgi example */
|
|
#ifndef LWIP_HTTPD_EXAMPLE_CGI_SIMPLE
|
|
#define LWIP_HTTPD_EXAMPLE_CGI_SIMPLE 0
|
|
#endif
|
|
|
|
#if LWIP_HTTPD_EXAMPLE_CGI_SIMPLE
|
|
|
|
#if !LWIP_HTTPD_CGI
|
|
#error LWIP_HTTPD_EXAMPLE_CGI_SIMPLE needs LWIP_HTTPD_CGI
|
|
#endif
|
|
|
|
static const char *cgi_handler_basic(int iIndex, int iNumParams, char *pcParam[], char *pcValue[]);
|
|
|
|
static const tCGI cgi_handlers[] = {
|
|
{
|
|
"/basic_cgi",
|
|
cgi_handler_basic
|
|
},
|
|
{
|
|
"/basic_cgi_2",
|
|
cgi_handler_basic
|
|
}
|
|
};
|
|
|
|
void
|
|
cgi_ex_init(void)
|
|
{
|
|
http_set_cgi_handlers(cgi_handlers, LWIP_ARRAYSIZE(cgi_handlers));
|
|
}
|
|
|
|
/** This basic CGI function can parse param/value pairs and return an url that
|
|
* is sent as a response by httpd.
|
|
*
|
|
* This example function just checks that the input url has two key value
|
|
* parameter pairs: "foo=bar" and "test=123"
|
|
* If not, it returns 404
|
|
*/
|
|
static const char *
|
|
cgi_handler_basic(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
|
|
{
|
|
LWIP_ASSERT("check index", iIndex < LWIP_ARRAYSIZE(cgi_handlers));
|
|
|
|
if (iNumParams == 2) {
|
|
if (!strcmp(pcParam[0], "foo")) {
|
|
if (!strcmp(pcValue[0], "bar")) {
|
|
if (!strcmp(pcParam[1], "test")) {
|
|
if (!strcmp(pcValue[1], "123")) {
|
|
return "/index.html";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return "/404.html";
|
|
}
|
|
|
|
#endif /* LWIP_HTTPD_EXAMPLE_CGI_SIMPLE */
|