cgi_process_var

#include <net_config.h>

void cgi_process_var (
    U8* qs );    /* Pointer to QUERY_STRING returned from the GET method. */

The cgi_process_var function processes the environmental variable QUERY_STRING that is returned from the CGI form GET method. The HTTP server calls this function when a user presses the SUBMIT button on the input form, using a web browser.

The argument qs points to the QUERY_STRING that is returned from the GET method.

The cgi_process_var function is in the HTTP_CGI.c module. The prototype is defined in net_config.h.

note

• The querry string qs is terminated by the space character.
• The HTTP server calls the cgi_process_var function only if the input form, in HTML source, is created with attribute METHOD=GET. For example:

  <FORM ACTION=index.htm METHOD=GET NAME=CGI>
   ..
  </FORM>
  

cgi_func, cgi_process_data

void cgi_process_var (U8 *qs) {
  U8 var[40];

  do {
    /* Loop through all the parameters. */
    qs = http_get_var (qs, var, 40);
    /* Check the returned string, 'qs' now points to the next. */
    if (var[0] != 0) {
      /* Returned string is non 0-length. */
      if (str_scomp (var, "ip=") == __TRUE) {
        /* My IP address parameter. */
        sscanf (&var[3], "%bd.%bd.%bd.%bd",&LocM.IpAdr[0],&LocM.IpAdr[1],
                                           &LocM.IpAdr[2],&LocM.IpAdr[3]);
      }
      else if (str_Scomp (var, "msk=") == __TRUE) {
        /* Net mask parameter. */
        sscanf (&var[4], "%bd.%bd.%bd.%bd",&LocM.NetMask[0],&LocM.NetMask[1],
                                           &LocM.NetMask[2],&LocM.NetMask[3]);
      }
      else if (str_scomp (var, "gw=") == __TRUE) {
       ..
      }
    }
  }while (qs);
}