public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable {
String data;
Logger log_bad = Logger.getLogger("local-logger");
data = "";
/* parse the query string for value of 'id' */
String id_str = null;
StringTokenizer st = new StringTokenizer(request.getQueryString(), "&");
while (st.hasMoreTokens()) {
String token = st.nextToken();
int i = token.indexOf("=");
if ((i > 0) && (i < (token.length() - 1)) && (token.substring(0, i).equals("id"))) {
id_str = token.substring(i + 1);
break;
}
}
if (id_str != null) {
Connection conn = null;
PreparedStatement statement = null;
ResultSet rs = null;
try {
int id = Integer.parseInt(id_str);
conn = IO.getDBConnection();
statement = conn.prepareStatement("select * from pages where id=?");
/* FLAW: no check to see whether the user has privileges to view the data */
statement.setInt(1, id);
rs = statement.executeQuery();
data = rs.toString();
} catch (SQLException se) {
log_bad.warning("Error");
} finally {
/* clean up database objects */
try {
if (rs != null) {
rs.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing rs");
} finally {
try {
if (statement != null) {
statement.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing statement");
} finally {
try {
if (conn != null) {
conn.close();
}
} catch (SQLException se) {
log_bad.warning("Error closing conn");
}
}
}
}
}
Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
Object instance = c.newInstance();
IO.writeLine(instance.toString());
}
