web.c

基于凌阳系列单片机的以太网驱动程序

/*=========================================================================
*  Filename:   web.c
*  Function Description: Deal with WEB webpage data. 
*  Author:    Gong Zhigang
*  Date:      2004/03/10
*  Email:     [e-mail]
*
*========================================================================*/

#include "config.h"
#include "httpd.h"
#include "web.h"
#include "fs.h"

char s_open[] = "@开";
char s_close[] = "@关";

u16_t status[3] = {0,0,0};

#define AIR 0
#define LIGHT 1
#define MUSIC 2



struct webdata *Web_Request(char *req)
{
struct fs_file file;
char *tempstr = req;
struct webdata *tempweb,*retweb;
u16_t cur_dev = 0,device;
u16_t opt,oprate;
if (!(strcmp(tempstr, "/index.html")  && strcmp(tempstr, "/")))   //特殊页面，从一个静态页面转向动态
{
tempstr += strlen(tempstr) + 1;						 //并且要
   if (!strcmp(tempstr,"PD"))
    {
      tempstr += strlen(tempstr)+1;
      if (!strcmp(tempstr,"123456"))
        {
        fs_open("/opt.html", &file);
        retweb = Web_Init(&file,1);
        goto init0;
        }
        else 
          {
           fs_open("/err.htm",&file);
           retweb = Web_Init(&file,0);//初始化页面，不需要动态
           }
         return(retweb);  
    }
    else if('H' == *tempstr)   //HTTP
      {
       fs_open("/index.html",&file);
       return(Web_Init(&file,0)); 
       }
    else   
    { 
     fs_open("/invalid.htm",&file);
     return(Web_Init(&file,0));
    }
}
else if(!strcmp(tempstr, "/opt.html")) //动态页面
  {
   fs_open("/opt.html", &file);
   retweb = Web_Init(&file,1);
   tempstr += strlen(tempstr)+1;
   opt = StrToInt(tempstr);
   if (opt%2) oprate = (u16_t)s_close[0];
   else oprate = (u16_t)s_open[0];
   switch (opt)
   {
   case 10: ;
   case 11:device = AIR; break;
   case 12: ;
   case 13:device = LIGHT; break;
   case 14: ;
   case 15:device = MUSIC; break;
   }
   status[device] = oprate;
   
   
init0:   
  for(tempweb = retweb ; tempweb!=NULL; tempweb = tempweb->next)
   {
    if (tempweb->attr == DYNAMIC)   //进入动态网页区域
    {  
    if (status[cur_dev]!=0)
       tempweb->payload[0] = status[cur_dev];
       else tempweb->payload[0] = (u16_t)s_close[0];
       tempweb->len = 2;     
         cur_dev++;   // 记录第几块动态区域
    }
   }//end of for      
   return(retweb);
   }
else 
  {
    	fs_open(tempstr,&file);
    	if( file.data == NULL)
    	   fs_open("/404.html", &file);  
    	return(Web_Init(&file,0));
    	} 
  return(NULL);  //never be here
}