Cgi koodinäiteid

Shelli skript, mis kuvab kataloogi listingu:

#!/bin/sh
echo 'content-type: text/html'
echo
echo ' uus ok leht olemas '
ls -l

Pythoni skript, mis trükib ühe sõna kolm korda:

#!/usr/bin/python

def foo():
  print "<p>miskijutt</p>"

print "content-type: text/html"
print
print "ok !! jalle olemas"
foo()
foo()
foo()

C "hello world" programm, mis tuleks kompileerida.

#include <stdio.h>

int main(void) {
    printf("content-type: text/html\n\n");
    printf("Tere ise ka!\n");
  
    /*
    fflush(stdout);
    exit(0);
    */
}

Shelli skript, mis kuvab etteantud cgi parameetrid:

#!/bin/sh
echo 'content-type: text/html'
echo
echo ' uus ok leht olemas '
echo $QUERY_STRING

C näide, mis liidab kahte arvu (NB! csapp.h tuleb võtta tiny veebiserverist, vt kursuse lehel tiny.zip)

/*
 * adder.c - a minimal CGI program that adds two numbers together
 */
#include "csapp.h"

int main(void) {
    char *buf, *p;
    char arg1[MAXLINE], arg2[MAXLINE], content[MAXLINE];
    int n1=0, n2=0;

    /* Extract the two arguments */  
    if ((buf = getenv("QUERY_STRING")) != NULL) {       
        p = strchr(buf, '&');
        *p = '\0';
        strcpy(arg1, buf);
        strcpy(arg2, p+1);
        n1 = atoi(arg1);
        n2 = atoi(arg2);        
    }
          
    /* Make the response body */
    sprintf(content, "Welcome to add.com: ");
    sprintf(content, "%sTHE Internet addition portal.\r\n<p>", content);
    sprintf(content, "%sThe answer is: %d + %d = %d\r\n<p>", 
            content, n1, n2, n1 + n2);
    sprintf(content, "%sThanks for visiting!\r\n", content);
  
    /* Generate the HTTP response */
    // printf("content-length: %d\r\n", strlen(content));
    printf("content-type: text/html\n\n");
    printf("%s", content);
    fflush(stdout);
    exit(0);
}