package net.i2p.router.web;
import java.util.Properties;
import java.util.Set;
import net.i2p.data.DataHelper;
import net.i2p.data.Destination;
import net.i2p.router.TunnelPoolSettings;
public class ConfigTunnelsHelper extends HelperBase {
private static final String HOP = "hop";
private static final String TUNNEL = "tunnel";
/** dummies for translation */
private static final String HOPS = ngettext("1 hop", "{0} hops");
private static final String TUNNELS = ngettext("1 tunnel", "{0} tunnels");
public String getForm() {
StringBuilder buf = new StringBuilder(1024);
// HTML: <input> cannot be inside a <table>
buf.append("<input type=\"hidden\" name=\"pool.0\" value=\"exploratory\" >\n");
int cur = 1;
Set<Destination> clients = _context.clientManager().listClients();
for (Destination dest : clients) {
buf.append("<input type=\"hidden\" name=\"pool.").append(cur).append("\" value=\"");
buf.append(dest.calculateHash().toBase64()).append("\" >\n");
cur++;
}
buf.append("<table>\n");
TunnelPoolSettings exploratoryIn = _context.tunnelManager().getInboundSettings();
TunnelPoolSettings exploratoryOut = _context.tunnelManager().getOutboundSettings();
renderForm(buf, 0, "exploratory", _t("Exploratory tunnels"), exploratoryIn, exploratoryOut);
cur = 1;
for (Destination dest : clients) {
TunnelPoolSettings in = _context.tunnelManager().getInboundSettings(dest.calculateHash());
TunnelPoolSettings out = _context.tunnelManager().getOutboundSettings(dest.calculateHash());
if ( (in == null) || (out == null) ) continue;
String name = in.getDestinationNickname();
if (name == null)
name = out.getDestinationNickname();
if (name == null)
name = dest.calculateHash().toBase64().substring(0,6);
String prefix = dest.calculateHash().toBase64().substring(0,4);
renderForm(buf, cur, prefix, _t("Client tunnels for {0}", DataHelper.escapeHTML(_t(name))), in, out);
cur++;
}
buf.append("</table>\n");
return buf.toString();
}
private static final int WARN_LENGTH = 4;
private static final int MAX_LENGTH = 4;
private static final int MAX_ADVANCED_LENGTH = 7;
private static final int WARN_QUANTITY = 5;
private static final int MAX_QUANTITY = 6;
private static final int MAX_ADVANCED_QUANTITY = 16;
private static final int MAX_BACKUP_QUANTITY = 3;
private static final int MAX_ADVANCED_BACKUP_QUANTITY = 16;
private static final int MAX_VARIANCE = 2;
private static final int MIN_NEG_VARIANCE = -1;
private void renderForm(StringBuilder buf, int index, String prefix, String name, TunnelPoolSettings in, TunnelPoolSettings out) {
boolean advanced = isAdvanced();
buf.append("<tr><th colspan=\"3\"><a name=\"").append(prefix).append("\">");
buf.append(name).append("</a></th></tr>\n");
if (in.getLength() <= 0 ||
in.getLength() + in.getLengthVariance() <= 0 ||
out.getLength() <= 0 ||
out.getLength() + out.getLengthVariance() <= 0)
buf.append("<tr><th colspan=\"3\"><font color=\"red\">" + _t("ANONYMITY WARNING - Settings include 0-hop tunnels.") + "</font></th></tr>");
else if (in.getLength() <= 1 ||
in.getLength() + in.getLengthVariance() <= 1 ||
out.getLength() <= 1 ||
out.getLength() + out.getLengthVariance() <= 1)
buf.append("<tr><th colspan=\"3\"><font color=\"red\">" + _t("ANONYMITY WARNING - Settings include 1-hop tunnels.") + "</font></th></tr>");
if (in.getLength() + Math.abs(in.getLengthVariance()) >= WARN_LENGTH ||
out.getLength() + Math.abs(out.getLengthVariance()) >= WARN_LENGTH)
buf.append("<tr><th colspan=\"3\"><font color=\"red\">" + _t("PERFORMANCE WARNING - Settings include very long tunnels.") + "</font></th></tr>");
if (in.getTotalQuantity() >= WARN_QUANTITY ||
out.getTotalQuantity() >= WARN_QUANTITY)
buf.append("<tr><th colspan=\"3\"><font color=\"red\">" + _t("PERFORMANCE WARNING - Settings include high tunnel quantities.") + "</font></th></tr>");
buf.append("<tr><th></th><th><img src=\"/themes/console/images/inbound.png\" alt=\"Inbound\" title=\"Inbound Tunnels\"> " + _t("Inbound") + "</th><th><img src=\"/themes/console/images/outbound.png\" alt=\"Outbound Tunnels\" title=\"Outbound\"> " + _t("Outbound") + "</th></tr>\n");
// buf.append("<tr><th></th><th>Inbound</th><th>Outbound</th></tr>\n");
// tunnel depth
int maxLength = advanced ? MAX_ADVANCED_LENGTH : MAX_LENGTH;
buf.append("<tr><td align=\"right\" class=\"mediumtags\">" + _t("Length") + ":</td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".depthInbound\">\n");
int now = in.getLength();
renderOptions(buf, 0, maxLength, now, "", HOP);
if (now > maxLength)
renderOptions(buf, now, now, now, "", HOP);
buf.append("</select></td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".depthOutbound\">\n");
now = out.getLength();
renderOptions(buf, 0, maxLength, now, "", HOP);
if (now > maxLength)
renderOptions(buf, now, now, now, "", HOP);
buf.append("</select></td>\n");
buf.append("</tr>\n");
// tunnel depth variance
buf.append("<tr><td align=\"right\" class=\"mediumtags\">" + _t("Randomization") + ":</td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".varianceInbound\">\n");
now = in.getLengthVariance();
renderOptions(buf, 0, 0, now, "", HOP);
renderOptions(buf, 1, MAX_VARIANCE, now, "+ 0-", HOP);
renderOptions(buf, MIN_NEG_VARIANCE, -1, now, "+/- 0", HOP);
if (now > MAX_VARIANCE)
renderOptions(buf, now, now, now, "+ 0-", HOP);
else if (now < MIN_NEG_VARIANCE)
renderOptions(buf, now, now, now, "+/- 0", HOP);
buf.append("</select></td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".varianceOutbound\">\n");
now = out.getLengthVariance();
renderOptions(buf, 0, 0, now, "", HOP);
renderOptions(buf, 1, MAX_VARIANCE, now, "+ 0-", HOP);
renderOptions(buf, MIN_NEG_VARIANCE, -1, now, "+/- 0", HOP);
if (now > MAX_VARIANCE)
renderOptions(buf, now, now, now, "+ 0-", HOP);
else if (now < MIN_NEG_VARIANCE)
renderOptions(buf, now, now, now, "+/- 0", HOP);
buf.append("</select></td>\n");
// tunnel quantity
int maxQuantity = advanced ? MAX_ADVANCED_QUANTITY : MAX_QUANTITY;
buf.append("<tr><td align=\"right\" class=\"mediumtags\">" + _t("Quantity") + ":</td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".quantityInbound\">\n");
now = in.getQuantity();
renderOptions(buf, 1, maxQuantity, now, "", TUNNEL);
if (now > maxQuantity)
renderOptions(buf, now, now, now, "", TUNNEL);
buf.append("</select></td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".quantityOutbound\">\n");
now = out.getQuantity();
renderOptions(buf, 1, maxQuantity, now, "", TUNNEL);
if (now > maxQuantity)
renderOptions(buf, now, now, now, "", TUNNEL);
buf.append("</select></td>\n");
buf.append("</tr>\n");
// tunnel backup quantity
int maxBQuantity = advanced ? MAX_ADVANCED_BACKUP_QUANTITY : MAX_BACKUP_QUANTITY;
buf.append("<tr><td align=\"right\" class=\"mediumtags\">" + _t("Backup quantity") + ":</td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".backupInbound\">\n");
now = in.getBackupQuantity();
renderOptions(buf, 0, maxBQuantity, now, "", TUNNEL);
if (now > maxBQuantity)
renderOptions(buf, now, now, now, "", TUNNEL);
buf.append("</select></td>\n");
buf.append("<td align=\"center\"><select name=\"").append(index).append(".backupOutbound\">\n");
now = out.getBackupQuantity();
renderOptions(buf, 0, maxBQuantity, now, "", TUNNEL);
if (now > maxBQuantity)
renderOptions(buf, now, now, now, "", TUNNEL);
buf.append("</select></td>\n");
buf.append("</tr>\n");
// custom options
// There is no facility to set these, either in ConfigTunnelsHandler or
// TunnelPoolOptions, so make the boxes readonly.
// And let's not display them at all unless they have contents, which should be rare.
Properties props = in.getUnknownOptions();
if (!props.isEmpty()) {
buf.append("<tr><td align=\"right\" class=\"mediumtags\">" + _t("Inbound options") + ":</td>\n" +
"<td colspan=\"2\" align=\"center\"><input name=\"").append(index);
buf.append(".inboundOptions\" type=\"text\" size=\"32\" disabled=\"disabled\" " +
"value=\"");
for (String prop : props.stringPropertyNames()) {
String val = props.getProperty(prop);
buf.append(prop).append('=').append(val).append(' ');
}
buf.append("\"></td></tr>\n");
}
props = out.getUnknownOptions();
if (!props.isEmpty()) {
buf.append("<tr><td align=\"right\" class=\"mediumtags\">" + _t("Outbound options") + ":</td>\n" +
"<td colspan=\"2\" align=\"center\"><input name=\"").append(index);
buf.append(".outboundOptions\" type=\"text\" size=\"32\" disabled=\"disabled\" " +
"value=\"");
for (String prop : props.stringPropertyNames()) {
String val = props.getProperty(prop);
buf.append(prop).append('=').append(val).append(' ');
}
buf.append("\"></td></tr>\n");
}
// buf.append("<tr><td colspan=\"3\"><br></td></tr>\n");
}
/** to fool xgettext so the following isn't tagged */
private static final String DUMMY1 = "1 ";
private static final String DUMMY2 = "{0} ";
private void renderOptions(StringBuilder buf, int min, int max, int now, String prefix, String name) {
for (int i = min; i <= max; i++) {
buf.append("<option value=\"").append(i).append("\" ");
if (i == now)
buf.append("selected=\"selected\" ");
buf.append(">").append(ngettext(DUMMY1 + name, DUMMY2 + name + 's', i));
buf.append("</option>\n");
}
}
/** dummy for tagging */
private static String ngettext(String s, String p) {
return null;
}
}