public static String getIpFromRequest(HttpServletRequest request) {
String ip;
boolean found = false;
if ((ip = request.getHeader("x-forwarded-for")) != null) {
StrTokenizer tokenizer = new StrTokenizer(ip, ",");
while (tokenizer.hasNext()) {
ip = tokenizer.nextToken().trim();
if (isIPv4Valid(ip) && !isIPv4Private(ip)) {
found = true;
break;
}
}
}
if (!found) {
ip = request.getRemoteAddr();
}
return ip;
}
/**
* Read an item list DAO from a file.
*
* @param file A file of item IDs, one per line.
* @return The item list DAO.
* @throws java.io.IOException if there is an error reading the list of items.
*/
public static MapItemNameDAO fromCSVFile(File file) throws IOException {
LineCursor cursor = LineCursor.openFile(file, CompressionMode.AUTO);
try {
ImmutableMap.Builder<Long, String> names = ImmutableMap.builder();
StrTokenizer tok = StrTokenizer.getCSVInstance();
for (String line : cursor) {
tok.reset(line);
long item = Long.parseLong(tok.next());
String title = tok.nextToken();
if (title != null) {
names.put(item, title);
}
}
return new MapItemNameDAO(names.build());
} catch (NoSuchElementException ex) {
throw new IOException(
String.format("%s:%s: not enough columns", file, cursor.getLineNumber()), ex);
} catch (NumberFormatException ex) {
throw new IOException(
String.format("%s:%s: id not an integer", file, cursor.getLineNumber()), ex);
} finally {
cursor.close();
}
}