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226 lines
7.0 KiB
C
226 lines
7.0 KiB
C
19 years ago
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/**
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* \addtogroup httpd
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* @{
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*/
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/**
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* \file
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* HTTP server script language C functions file.
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* \author Adam Dunkels <adam@dunkels.com>
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*
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* This file contains functions that are called by the web server
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* scripts. The functions takes one argument, and the return value is
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* interpreted as follows. A zero means that the function did not
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* complete and should be invoked for the next packet as well. A
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* non-zero value indicates that the function has completed and that
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* the web server should move along to the next script line.
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*
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*/
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/*
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* Copyright (c) 2001, Adam Dunkels.
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* All rights reserved.
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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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* 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. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: cgi.c,v 1.23.2.4 2003/10/07 13:22:27 adam Exp $
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*
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*/
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#include "uip.h"
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#include "cgi.h"
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#include "httpd.h"
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#include "fs.h"
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#include <stdio.h>
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#include <string.h>
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static u8_t print_stats(u8_t next);
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static u8_t file_stats(u8_t next);
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static u8_t tcp_stats(u8_t next);
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static u8_t rtos_stats(u8_t next);
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cgifunction cgitab[] = {
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print_stats, /* CGI function "a" */
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file_stats, /* CGI function "b" */
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tcp_stats, /* CGI function "c" */
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rtos_stats /* CGI function "d" */
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};
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static const char closed[] = /* "CLOSED",*/
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{0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
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static const char syn_rcvd[] = /* "SYN-RCVD",*/
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{0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
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0x44, 0};
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static const char syn_sent[] = /* "SYN-SENT",*/
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{0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
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0x54, 0};
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static const char established[] = /* "ESTABLISHED",*/
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{0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
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0x45, 0x44, 0};
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static const char fin_wait_1[] = /* "FIN-WAIT-1",*/
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{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
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0x54, 0x2d, 0x31, 0};
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static const char fin_wait_2[] = /* "FIN-WAIT-2",*/
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{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
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0x54, 0x2d, 0x32, 0};
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static const char closing[] = /* "CLOSING",*/
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{0x43, 0x4c, 0x4f, 0x53, 0x49,
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0x4e, 0x47, 0};
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static const char time_wait[] = /* "TIME-WAIT,"*/
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{0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
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0x49, 0x54, 0};
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static const char last_ack[] = /* "LAST-ACK"*/
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{0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
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0x4b, 0};
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static const char *states[] = {
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closed,
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syn_rcvd,
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syn_sent,
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established,
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fin_wait_1,
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fin_wait_2,
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closing,
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time_wait,
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last_ack};
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/*-----------------------------------------------------------------------------------*/
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/* print_stats:
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*
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* Prints out a part of the uIP statistics. The statistics data is
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* written into the uip_appdata buffer. It overwrites any incoming
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* packet.
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*/
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static u8_t
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print_stats(u8_t next)
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{
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#if UIP_STATISTICS
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u16_t i, j;
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u8_t *buf;
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u16_t *databytes;
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if(next) {
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/* If our last data has been acknowledged, we move on the next
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chunk of statistics. */
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hs->count = hs->count + 4;
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if(hs->count >= sizeof(struct uip_stats)/sizeof(u16_t)) {
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/* We have printed out all statistics, so we return 1 to
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indicate that we are done. */
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return 1;
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}
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}
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/* Write part of the statistics into the uip_appdata buffer. */
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databytes = (u16_t *)&uip_stat + hs->count;
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buf = (u8_t *)uip_appdata;
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j = 4 + 1;
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i = hs->count;
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while (i < sizeof(struct uip_stats)/sizeof(u16_t) && --j > 0) {
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sprintf((char *)buf, "%5u\r\n", *databytes);
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++databytes;
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buf += 6;
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++i;
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}
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/* Send the data. */
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uip_send(uip_appdata, buf - uip_appdata);
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return 0;
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#else
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return 1;
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#endif /* UIP_STATISTICS */
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}
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/*-----------------------------------------------------------------------------------*/
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static u8_t
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file_stats(u8_t next)
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{
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/* We use sprintf() to print the number of file accesses to a
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particular file (given as an argument to the function in the
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script). We then use uip_send() to actually send the data. */
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if(next) {
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return 1;
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}
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uip_send(uip_appdata, sprintf((char *)uip_appdata, "%5u", fs_count(&hs->script[4])));
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return 0;
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}
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/*-----------------------------------------------------------------------------------*/
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static u8_t
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tcp_stats(u8_t next)
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{
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struct uip_conn *conn;
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if(next) {
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/* If the previously sent data has been acknowledged, we move
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forward one connection. */
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if(++hs->count == UIP_CONNS) {
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/* If all connections has been printed out, we are done and
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return 1. */
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return 1;
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}
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}
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conn = &uip_conns[hs->count];
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if((conn->tcpstateflags & TS_MASK) == CLOSED) {
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uip_send(uip_appdata, sprintf((char *)uip_appdata,
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"<tr align=\"center\"><td>-</td><td>-</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
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conn->nrtx,
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conn->timer,
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(uip_outstanding(conn))? '*':' ',
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(uip_stopped(conn))? '!':' '));
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} else {
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uip_send(uip_appdata, sprintf((char *)uip_appdata,
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"<tr align=\"center\"><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
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htons(conn->ripaddr[0]) >> 8,
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htons(conn->ripaddr[0]) & 0xff,
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htons(conn->ripaddr[1]) >> 8,
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htons(conn->ripaddr[1]) & 0xff,
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htons(conn->rport),
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states[conn->tcpstateflags & TS_MASK],
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conn->nrtx,
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conn->timer,
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(uip_outstanding(conn))? '*':' ',
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(uip_stopped(conn))? '!':' '));
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}
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return 0;
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}
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/*-----------------------------------------------------------------------------------*/
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static u8_t
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rtos_stats(u8_t next)
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{
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static char cTraceBuffer[ 1024 ];
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extern void ( vTaskList )( char * );
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vTaskList( cTraceBuffer );
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uip_send( ( void * ) cTraceBuffer, strlen( cTraceBuffer ) );
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return 1;
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}
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