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https://gitee.com/mirrors_PX4/PX4-Autopilot.git
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Completes coding of the PWM module
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
@@ -0,0 +1,498 @@
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/****************************************************************************
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* netutils/webserver/httpd.c
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* httpd Web server
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*
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* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* This is a leverage of similar logic from uIP:
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*
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* Author: Adam Dunkels <adam@sics.se>
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* Copyright (c) 2004, Adam Dunkels.
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* All rights reserved.
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*
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* The uIP web server is a very simplistic implementation of an HTTP
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* server. It can serve web pages and files from a read-only ROM
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* filesystem, and provides a very small scripting language.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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||||
*
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||||
* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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||||
* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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||||
* 3. Neither the name of the Institute nor the names of its contributors
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||||
* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <pthread.h>
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#include <errno.h>
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#include <debug.h>
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#include <net/uip/uip.h>
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#include <apps/netutils/uiplib.h>
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#include <apps/netutils/httpd.h>
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#include "httpd.h"
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#include "httpd_cgi.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ISO_nl 0x0a
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#define ISO_space 0x20
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#define ISO_bang 0x21
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#define ISO_percent 0x25
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#define ISO_period 0x2e
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#define ISO_slash 0x2f
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#define ISO_colon 0x3a
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const char g_httpcontenttypebinary[] = "Content-type: application/octet-stream\r\n\r\n";
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static const char g_httpcontenttypecss[] = "Content-type: text/css\r\n\r\n";
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static const char g_httpcontenttypegif[] = "Content-type: image/gif\r\n\r\n";
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static const char g_httpcontenttypehtml[] = "Content-type: text/html\r\n\r\n";
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static const char g_httpcontenttypejpg[] = "Content-type: image/jpeg\r\n\r\n";
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static const char g_httpcontenttypeplain[] = "Content-type: text/plain\r\n\r\n";
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static const char g_httpcontenttypepng[] = "Content-type: image/png\r\n\r\n";
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static const char g_httpextensionhtml[] = ".html";
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static const char g_httpextensionshtml[] = ".shtml";
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static const char g_httpextensioncss[] = ".css";
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static const char g_httpextensionpng[] = ".png";
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static const char g_httpextensiongif[] = ".gif";
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static const char g_httpextensionjpg[] = ".jpg";
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static const char g_http404path[] = "/404.html";
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static const char g_httpindexpath[] = "/index.html";
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static const char g_httpcmdget[] = "GET ";
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static const char g_httpheader200[] =
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"HTTP/1.0 200 OK\r\n"
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"Server: uIP/1.0 http://www.sics.se/~adam/uip/\r\n"
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"Connection: close\r\n";
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static const char g_httpheader404[] =
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"HTTP/1.0 404 Not found\r\n"
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"Server: uIP/1.0 http://www.sics.se/~adam/uip/\r\n"
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"Connection: close\r\n";
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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#ifdef CONFIG_NETUTILS_HTTPD_DUMPBUFFER
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static void httpd_dumpbuffer(FAR const char *msg, FAR const char *buffer, unsigned int nbytes)
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{
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/* CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and CONFIG_DEBUG_NET have to be
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* defined or the following does nothing.
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*/
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nvdbgdumpbuffer(msg, (FAR const uint8_t*)buffer, nbytes);
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}
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#else
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# define httpd_dumpbuffer(msg,buffer,nbytes)
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#endif
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#ifdef CONFIG_NETUTILS_HTTPD_DUMPPSTATE
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static void httpd_dumppstate(struct httpd_state *pstate, const char *msg)
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{
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#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_VERBOSE) && defined(CONFIG_DEBUG_NET)
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nvdbg("[%d] pstate(%p): [%s]\n", pstate->ht_sockfd, pstate, msg);
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nvdbg(" filename: [%s]\n", pstate->ht_filename);
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nvdbg(" htfile len: %d\n", pstate->ht_file.len);
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nvdbg(" sockfd: %d\n", pstate->ht_sockfd);
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nvdbg(" scriptptr: %p\n", pstate->ht_scriptptr);
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nvdbg(" scriptlen: %d\n", pstate->ht_scriptlen);
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nvdbg(" sndlen: %d\n", pstate->ht_sndlen);
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#endif
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}
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#else
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# define httpd_dumppstate(pstate, msg)
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#endif
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static void next_scriptstate(struct httpd_state *pstate)
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{
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char *p;
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p = strchr(pstate->ht_scriptptr, ISO_nl) + 1;
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pstate->ht_scriptlen -= (unsigned short)(p - pstate->ht_scriptptr);
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pstate->ht_scriptptr = p;
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}
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static int handle_script(struct httpd_state *pstate)
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{
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int len;
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char *ptr;
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while (pstate->ht_file.len > 0)
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{
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/* Check if we should start executing a script */
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if (*pstate->ht_file.data == ISO_percent && *(pstate->ht_file.data + 1) == ISO_bang)
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{
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pstate->ht_scriptptr = pstate->ht_file.data + 3;
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pstate->ht_scriptlen = pstate->ht_file.len - 3;
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if (*(pstate->ht_scriptptr - 1) == ISO_colon)
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{
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httpd_fs_open(pstate->ht_scriptptr + 1, &pstate->ht_file);
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send(pstate->ht_sockfd, pstate->ht_file.data, pstate->ht_file.len, 0);
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}
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else
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{
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httpd_cgi(pstate->ht_scriptptr)(pstate, pstate->ht_scriptptr);
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}
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next_scriptstate(pstate);
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/* The script is over, so we reset the pointers and continue
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* sending the rest of the file
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*/
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pstate->ht_file.data = pstate->ht_scriptptr;
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pstate->ht_file.len = pstate->ht_scriptlen;
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}
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else
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{
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/* See if we find the start of script marker in the block of HTML
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* to be sent
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*/
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if (pstate->ht_file.len > HTTPD_IOBUFFER_SIZE)
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{
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len = HTTPD_IOBUFFER_SIZE;
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}
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else
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{
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len = pstate->ht_file.len;
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}
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if (*pstate->ht_file.data == ISO_percent)
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{
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ptr = strchr(pstate->ht_file.data + 1, ISO_percent);
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}
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else
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{
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ptr = strchr(pstate->ht_file.data, ISO_percent);
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}
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if (ptr != NULL && ptr != pstate->ht_file.data)
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{
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len = (int)(ptr - pstate->ht_file.data);
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if (len >= HTTPD_IOBUFFER_SIZE)
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{
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len = HTTPD_IOBUFFER_SIZE;
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}
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}
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send(pstate->ht_sockfd, pstate->ht_file.data, len, 0);
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pstate->ht_file.data += len;
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pstate->ht_file.len -= len;
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}
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}
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return OK;
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}
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static int httpd_addchunk(struct httpd_state *pstate, const char *buffer, int len)
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{
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int newlen;
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int chunklen;
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int ret;
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do
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{
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/* Determine the size of the next chunk so that it fits into the buffer */
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newlen = pstate->ht_sndlen + len;
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if (newlen > HTTPD_IOBUFFER_SIZE)
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{
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newlen = HTTPD_IOBUFFER_SIZE;
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chunklen = HTTPD_IOBUFFER_SIZE - pstate->ht_sndlen;
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}
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else
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{
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chunklen = len;
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}
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nvdbg("[%d] sndlen=%d len=%d newlen=%d chunklen=%d\n",
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pstate->ht_sockfd, pstate->ht_sndlen, len, newlen, chunklen);
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/* Copy that chunk into the send buffer */
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memcpy(&pstate->ht_buffer[pstate->ht_sndlen], buffer, chunklen);
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if (newlen >= HTTPD_IOBUFFER_SIZE)
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{
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/* The buffer is full.. Send what we have and reset to send again */
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httpd_dumpbuffer("Outgoing buffer", pstate->ht_buffer, newlen);
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ret = send(pstate->ht_sockfd, pstate->ht_buffer, newlen, 0);
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if (ret < 0)
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{
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return ret;
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}
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newlen = 0;
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}
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pstate->ht_sndlen = newlen;
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len -= chunklen;
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buffer += chunklen;
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}
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while (len > 0);
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return OK;
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}
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static int send_headers(struct httpd_state *pstate, const char *statushdr, int len)
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{
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char *ptr;
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int ret;
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ret = httpd_addchunk(pstate, statushdr, len);
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if (ret < 0)
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{
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return ret;
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}
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ptr = strrchr(pstate->ht_filename, ISO_period);
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if (ptr == NULL)
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypebinary, strlen(g_httpcontenttypebinary));
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}
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else if (strncmp(g_httpextensionhtml, ptr, strlen(g_httpextensionhtml)) == 0 ||
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strncmp(g_httpextensionshtml, ptr, strlen(g_httpextensionshtml)) == 0)
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypehtml, strlen(g_httpcontenttypehtml));
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}
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else if (strncmp(g_httpextensioncss, ptr, strlen(g_httpextensioncss)) == 0)
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypecss, strlen(g_httpcontenttypecss));
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}
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else if (strncmp(g_httpextensionpng, ptr, strlen(g_httpextensionpng)) == 0)
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypepng, strlen(g_httpcontenttypepng));
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}
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else if (strncmp(g_httpextensiongif, ptr, strlen(g_httpextensiongif)) == 0)
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypegif, strlen(g_httpcontenttypegif));
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}
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else if (strncmp(g_httpextensionjpg, ptr, strlen(g_httpextensionjpg)) == 0)
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypejpg, strlen(g_httpcontenttypejpg));
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}
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else
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{
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ret = httpd_addchunk(pstate, g_httpcontenttypeplain, strlen(g_httpcontenttypeplain));
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}
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return ret;
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}
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static int httpd_sendfile(struct httpd_state *pstate)
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{
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char *ptr;
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int ret = ERROR;
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pstate->ht_sndlen = 0;
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nvdbg("[%d] sending file '%s'\n", pstate->ht_sockfd, pstate->ht_filename);
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if (!httpd_fs_open(pstate->ht_filename, &pstate->ht_file))
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{
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ndbg("[%d] '%s' not found\n", pstate->ht_sockfd, pstate->ht_filename);
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memcpy(pstate->ht_filename, g_http404path, strlen(g_http404path));
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httpd_fs_open(g_http404path, &pstate->ht_file);
|
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if (send_headers(pstate, g_httpheader404, strlen(g_httpheader404)) == OK)
|
||||
{
|
||||
ret = httpd_addchunk(pstate, pstate->ht_file.data, pstate->ht_file.len);
|
||||
}
|
||||
}
|
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else
|
||||
{
|
||||
if (send_headers(pstate, g_httpheader200, strlen(g_httpheader200)) == OK)
|
||||
{
|
||||
ptr = strchr(pstate->ht_filename, ISO_period);
|
||||
if (ptr != NULL &&
|
||||
strncmp(ptr, g_httpextensionshtml, strlen(g_httpextensionshtml)) == 0)
|
||||
{
|
||||
ret = handle_script(pstate);
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = httpd_addchunk(pstate, pstate->ht_file.data, pstate->ht_file.len);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Send anything remaining in the buffer */
|
||||
|
||||
if (ret == OK && pstate->ht_sndlen > 0)
|
||||
{
|
||||
httpd_dumpbuffer("Outgoing buffer", pstate->ht_buffer, pstate->ht_sndlen);
|
||||
if (send(pstate->ht_sockfd, pstate->ht_buffer, pstate->ht_sndlen, 0) < 0)
|
||||
{
|
||||
ret = ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline int httpd_cmd(struct httpd_state *pstate)
|
||||
{
|
||||
ssize_t recvlen;
|
||||
int i;
|
||||
|
||||
/* Get the next HTTP command. We will handle only GET */
|
||||
|
||||
recvlen = recv(pstate->ht_sockfd, pstate->ht_buffer, HTTPD_IOBUFFER_SIZE, 0);
|
||||
if (recvlen < 0)
|
||||
{
|
||||
ndbg("[%d] recv failed: %d\n", pstate->ht_sockfd, errno);
|
||||
return ERROR;
|
||||
}
|
||||
httpd_dumpbuffer("Incoming buffer", pstate->ht_buffer, recvlen);
|
||||
|
||||
/* We will handle only GET */
|
||||
|
||||
if (strncmp(pstate->ht_buffer, g_httpcmdget, strlen(g_httpcmdget)) != 0)
|
||||
{
|
||||
ndbg("[%d] Unsupported command\n", pstate->ht_sockfd);
|
||||
return ERROR;
|
||||
}
|
||||
|
||||
/* Get the name of the file to provide */
|
||||
|
||||
if (pstate->ht_buffer[4] != ISO_slash)
|
||||
{
|
||||
ndbg("[%d] Missing path\n", pstate->ht_sockfd);
|
||||
return ERROR;
|
||||
}
|
||||
else if (pstate->ht_buffer[5] == ISO_space)
|
||||
{
|
||||
strncpy(pstate->ht_filename, g_httpindexpath, strlen(g_httpindexpath));
|
||||
}
|
||||
else
|
||||
{
|
||||
for (i = 0;
|
||||
i < (HTTPD_MAX_FILENAME-1) && pstate->ht_buffer[i+4] != ISO_space;
|
||||
i++)
|
||||
{
|
||||
pstate->ht_filename[i] = pstate->ht_buffer[i+4];
|
||||
}
|
||||
pstate->ht_filename[i]='\0';
|
||||
}
|
||||
nvdbg("[%d] Filename: %s\n", pstate->ht_sockfd, pstate->ht_filename);
|
||||
|
||||
/* Then send the file */
|
||||
|
||||
return httpd_sendfile(pstate);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: httpd_handler
|
||||
*
|
||||
* Description:
|
||||
* Each time a new connection to port 80 is made, a new thread is created
|
||||
* that begins at this entry point. There should be exactly one argument
|
||||
* and it should be the socket descriptor (+1).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void *httpd_handler(void *arg)
|
||||
{
|
||||
struct httpd_state *pstate = (struct httpd_state *)malloc(sizeof(struct httpd_state));
|
||||
int sockfd = (int)arg;
|
||||
int ret = ERROR;
|
||||
|
||||
nvdbg("[%d] Started\n", sockfd);
|
||||
|
||||
/* Verify that the state structure was successfully allocated */
|
||||
|
||||
if (pstate)
|
||||
{
|
||||
/* Re-initialize the thread state structure */
|
||||
|
||||
memset(pstate, 0, sizeof(struct httpd_state));
|
||||
pstate->ht_sockfd = sockfd;
|
||||
|
||||
/* Then handle the next httpd command */
|
||||
|
||||
ret = httpd_cmd(pstate);
|
||||
|
||||
/* End of command processing -- Clean up and exit */
|
||||
|
||||
free(pstate);
|
||||
}
|
||||
|
||||
/* Exit the task */
|
||||
|
||||
nvdbg("[%d] Exitting\n", sockfd);
|
||||
close(sockfd);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
/****************************************************************************
|
||||
* Name: httpd_listen
|
||||
*
|
||||
* Description:
|
||||
* This is the main processing thread for the webserver. It never returns
|
||||
* unless an error occurs
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int httpd_listen(void)
|
||||
{
|
||||
/* Execute httpd_handler on each connection to port 80 */
|
||||
|
||||
uip_server(HTONS(80), httpd_handler, CONFIG_NETUTILS_HTTPDSTACKSIZE);
|
||||
|
||||
/* uip_server only returns on errors */
|
||||
|
||||
return ERROR;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: httpd_init
|
||||
*
|
||||
* Description:
|
||||
* This function initializes the web server and should be called at system
|
||||
* boot-up.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void httpd_init(void)
|
||||
{
|
||||
}
|
||||
Reference in New Issue
Block a user