📄 env_test.cpp
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/********************************************************************/
/*** ENV_TEST ***/
/*** ***/
/*** This CGI program generates a HTML document listing all ***/
/*** environment variables available to it. ***/
/*** ***/
/*** ENV_TEST could be called directly from a URL, like this ***/
/*** http://www.some.domain/scriptdir/env_test.exe ***/
/*** ***/
/*** It could also be called as the ACTION taken on a HTML form ***/
/*** submit, ie: ***/
/*** <html> ***/
/*** <body> ***/
/*** <form action="/scriptdir/env_test.exe"> ***/
/*** <input type=...> ***/
/*** <input type=...> ***/
/*** <input type="submit" value="submit"> ***/
/*** </form> ***/
/*** </body> ***/
/*** </html> ***/
/*** ***/
/********************************************************************/
#include <stdio.h>
int main( int argc, char **argv, char **env )
{
int i=0;
argc; argv; /* Just to make them used. */
/****************************/
/*** Output MIME header ***/
/****************************/
printf( "Content-type: text/html\n\n" );
/**********************************/
/*** Output the HTML document ***/
/**********************************/
printf( "<html><body>" );
printf( "<H1>Environment Variables</H1>" );
printf( "CGI environment variables are:<br>" );
/* Here comes the environment */
while( env[i] ) printf( "%s<br>", env[i++] );
printf( "</body></html>" );
/*********************/
/*** Done. Return ***/
/*********************/
return 0;
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