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

int main(int argc,char **argv);
char *showenv(char *env,char *envname);

int main(int argc,char **argv)
{
char *SERVER_SOFTWARE,*SERVER_NAME,*GATEWAY_INTERFACE,*SERVER_PROTOCOL,
     *SERVER_PORT,*REQUEST_METHOD,*PATH_INFO,*PATH_TRANSLATED,
     *SCRIPT_NAME,*QUERY_STRING,*REMOTE_HOST,*REMOTE_ADDR,*AUTH_TYPE,
     *REMOTE_USER,*REMOTE_IDENT,*CONTENT_TYPE,*CONTENT_LENGTH,
     *HTTP_ACCEPT,*HTTP_USER_AGENT;

	printf("Content-type: text/html\n\n");
	showenv(SERVER_SOFTWARE,"SERVER_SOFTWARE");
        printf("<br>\n");	
	showenv(SERVER_NAME,"SERVER_NAME");
        printf("<br>\n");
	showenv(GATEWAY_INTERFACE,"GATEWAY_INTERFACE");
        printf("<br>\n");
	showenv(SERVER_PORT,"SERVER_PORT");
        printf("<br>\n");
	showenv(REQUEST_METHOD,"REQUEST_METHOD");
        printf("<br>\n");
	showenv(PATH_INFO,"PATH_INFO");
        printf("<br>\n");
	showenv(PATH_TRANSLATED,"PATH_TRANSLATED");
        printf("<br>\n");
	showenv(SCRIPT_NAME,"SCRIPT_NAME");
        printf("<br>\n");
	showenv(QUERY_STRING,"QUERY_STRING");
        printf("<br>\n");
	showenv(REMOTE_HOST,"REMOTE_HOST");
        printf("<br>\n");
	showenv(REMOTE_ADDR,"REMOTE_ADDR");
        printf("<br>\n");
	showenv(AUTH_TYPE,"AUTH_TYPE");
        printf("<br>\n");
	showenv(REMOTE_USER,"REMOTE_USER");
        printf("<br>\n");
	showenv(REMOTE_IDENT,"REMOTE_IDENT");
        printf("<br>\n");
	showenv(CONTENT_TYPE,"CONTENT_TYPE");
        printf("<br>\n");
	showenv(CONTENT_LENGTH,"CONTENT_LENGTH");
        printf("<br>\n");
	showenv(HTTP_ACCEPT,"HTTP_ACCEPT");
        printf("<br>\n");
	showenv(HTTP_USER_AGENT,"HTTP_USER_AGENT");
        printf("<br>\n");
	return 0;
}

char *showenv(char *env,char *envname)
{
	if ((env = getenv(envname)) == NULL) {
		printf("unset %s\n",envname);
	} else {
		printf("%s=%s\n",envname,env);
	}
}