smplcgic

Simple CGI in C Library

This is a simple library that makes writing CGI in C very easy.

Only GET and POST methods with encoding type application/x-www-form-urlencoded is supported. This library will not work with multipart encodings, and so is not suitable to applications requiring file upload capability.

Usage:

#include <stdio.h>
#include <stdlib.h>
#include "smplcgic.h"

int main(void) {
    char *cgi;
    char *username;

    cgi = cgi_init();
    if (IS_CGI_ERROR(cgi)) { perror(cgi_err); exit(EXIT_FAILURE); }

    username = cgi_valof(cgi, "username");
    if (IS_CGI_ERROR(username)) { perror(cgi_err); exit(EXIT_FAILURE); }

    printf("Content-type: text/html\n\n");
    printf("\
<!DOCTYPE html>\n\
<html>\n\
    <head><title>Hello, there</title></head>\n\
    <body>\n\
        <h1>Hello, %s!</h1>\n\
    <body>\n\
</html>\n",
    username);

    cgi_free(username);
    cgi_free(cgi);

    return EXIT_SUCCESS;
}

To install this:

Compile this along with the smplcgic.c file into a .cgi file: cc namedisp.c smplcgic.c -o namedisp.cgi
Install the .cgi file on your webserver
Ensure the execute permission is set on the .cgi file
Ensure the web server is configured to execute .cgi files
Ensure the directory is allowed to execute .cgi files
Reference this .cgi file in the action attribute of your <form> tag

torstenvl/smplcgic

smplcgic