Created
November 16, 2016 16:39
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| #include <iostream> | |
| #include <stdlib.h> | |
| using namespace std; | |
| const string ENV[ 24 ] = { | |
| "COMSPEC", "DOCUMENT_ROOT", "GATEWAY_INTERFACE", | |
| "HTTP_ACCEPT", "HTTP_ACCEPT_ENCODING", | |
| "HTTP_ACCEPT_LANGUAGE", "HTTP_CONNECTION", | |
| "HTTP_HOST", "HTTP_USER_AGENT", "PATH", | |
| "QUERY_STRING", "REMOTE_ADDR", "REMOTE_PORT", | |
| "REQUEST_METHOD", "REQUEST_URI", "SCRIPT_FILENAME", | |
| "SCRIPT_NAME", "SERVER_ADDR", "SERVER_ADMIN", | |
| "SERVER_NAME","SERVER_PORT","SERVER_PROTOCOL", | |
| "SERVER_SIGNATURE","SERVER_SOFTWARE" | |
| }; | |
| int main () { | |
| cout << "Content-type:text/html\r\n\r\n"; | |
| cout << "<html>\n"; | |
| cout << "<head>\n"; | |
| cout << "<title>CGI Envrionment Variables</title>\n"; | |
| cout << "</head>\n"; | |
| cout << "<body>\n"; | |
| cout << "<table border = \"0\" cellspacing = \"2\">"; | |
| for ( int i = 0; i < 24; i++ ) { | |
| cout << "<tr><td>" << ENV[ i ] << "</td><td>"; | |
| // attempt to retrieve value of environment variable | |
| char *value = getenv( ENV[ i ].c_str() ); | |
| if ( value != 0 ){ | |
| cout << value; | |
| }else{ | |
| cout << "Environment variable does not exist."; | |
| } | |
| cout << "</td></tr>\n"; | |
| } | |
| cout << "</table>\n"; | |
| cout << "</body>\n"; | |
| cout << "</html>\n"; | |
| return 0; | |
| } |
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