📄 cgi.c
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/*******************************************************************************
Samples\TCPIP\HTTP\cgi.c
Z-World, 2000
A simple web-counter implemented in CGI functions. This
demonstrates how to add basic dynamic functionality to
your pages.
*******************************************************************************/
#class auto
/***********************************
* Configuration *
* ------------- *
* All fields in this section must *
* be altered to match your local *
* network settings. *
***********************************/
/*
* Pick the predefined TCP/IP configuration for this sample. See
* LIB\TCPIP\TCP_CONFIG.LIB for instructions on how to set the
* configuration.
*/
#define TCPCONFIG 1
/*
* Web server configuration
*/
/*
* only one socket and server are needed for a reserved port
*/
#define HTTP_MAXSERVERS 1
#define MAX_TCP_SOCKET_BUFFERS 1
/*
* Our web server as seen from the clients.
* This should be the address that the clients (netscape/IE)
* use to access your server. Usually, this is your IP address.
* If you are behind a firewall, though, it might be a port on
* the proxy, that will be forwarded to the Rabbit board. The
* commented out line is an example of such a situation.
*/
#define REDIRECTHOST _PRIMARY_STATIC_IP
//#define REDIRECTHOST "proxy.domain.com:1212"
/********************************
* End of configuration section *
********************************/
/* where to send the user after the CGI finishes */
#define REDIRECTTO "http://" REDIRECTHOST "/index.html"
#define TIMEZONE -8
#memmap xmem
#use "dcrtcp.lib"
#use "http.lib"
#ximport "samples/tcpip/http/pages/cgi.html" index_html
#ximport "samples/tcpip/http/pages/rabbit1.gif" rabbit1_gif
/*
* SSPEC_MIMETABLE_* gives the HTTP server hints about handling incoming
* requests. The server compares the extension of the incoming
* request with this list and returns the second field
* as the Content-Type field.
*
* The default mime type for '/' must be first
*
* Notice that cgi doesn't have a MIME type or a handler.
* The handler for this type of entity is make the the HttpSpec
* structure.
*
*/
SSPEC_MIMETABLE_START
SSPEC_MIME(".html", "text/html"),
SSPEC_MIME(".gif", "image/gif"),
SSPEC_MIME(".cgi", "")
SSPEC_MIMETABLE_END
/*
* there is a new entry in the http_flashspec: "/test.cgi"
*
* This entry includes the online name of CGI routine and the
* internal routine that it maps to.
*
*/
int test_cgi(HttpState* state);
// The static resource table is initialized with these macros...
SSPEC_RESOURCETABLE_START
SSPEC_RESOURCE_XMEMFILE("/index.html", index_html),
SSPEC_RESOURCE_XMEMFILE("/rabbit1.gif", rabbit1_gif),
SSPEC_RESOURCE_FUNCTION("/test.cgi", test_cgi)
SSPEC_RESOURCETABLE_END
void main()
{
sock_init();
http_init();
tcp_reserveport(80);
/*
* http_handler needs to be called to handle the active http servers.
*/
while (1) {
http_handler();
}
}
/*
* test string what is served by test_cgi. It is used
* as one of the parameters to sprintf() to build a buffer
* that is later sent. The format of the first three lines
* is important.
*
* HTTP/1.0 200 OK\r\n
* Date: <current date/time from http_date_str()>\r\n
* Content-Type: text/html\r\n\r\n
*
* The first line tells the internet browser that the content
* was found and will be returned in the body. The next line
* is the date which is followed by the mime type of the body.
* Notice the \r\n\r\n. If you leave out the second \r\n the
* browser will assume that the next line is part of the header.
* The document follows.
*
* There are many books and online references for the format
* of CGI responses.
*
*/
const char teststr[] =
"HTTP/1.0 200 OK\r\n" \
"Date: %s\r\n" \
"Content-Type: text/html\r\n\r\n" \
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD W3 HTML//EN\">\r\n" \
"<HTML>" \
"<HEAD><TITLE><cgi.c></TITLE></HEAD>" \
"<BODY><H1>cgi.c, hit count %d</H1>" \
" <BR><BR><BR><A HREF=\"%s\">home</A>" \
"</BODY>" \
"</HEAD>";
/*
* This is the internal cgi routine. It uses teststr to build
* a buffer which it uses to respond to the request.
*
* This routine increments the hit count value and uses the
* cgi_sendstring routine to send the page. The cgi_sendstring
* routine immediately returns and the string is sent the next
* time this server gets a tick. If you want the server to
* immediately close the connection return a one otherwise you
* should return a zero.
*
*/
int test_cgi(HttpState* state)
{
static char date[30];
static char buffer[512];
static int hitcount;
#GLOBAL_INIT { hitcount=0; }
hitcount++;
http_date_str(date);
sprintf(buffer,teststr,date,hitcount,REDIRECTTO);
cgi_sendstring(state,buffer);
return 0;
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