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fixed TransProxy DNS port (was pointing at 9040 instead of 5400); added filter drop rules for iptables 1.4.4 and higher 

svn:r23156
This commit is contained in:
Nathan Freitas 2010-09-09 21:47:06 +00:00
parent b62a522287
commit 704006ea92
2 changed files with 32 additions and 109 deletions
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1
src/org/torproject/android/service/TorService.java
View File

@ -319,7 +319,6 @@ public class TorService extends Service implements TorServiceConstants, Runnable
{ {
Log.d(TAG, msg); Log.d(TAG, msg);
sendCallbackLogMessage(msg); sendCallbackLogMessage(msg);
} }

138
src/org/torproject/android/service/TorTransProxy.java
View File

@ -119,40 +119,6 @@ public class TorTransProxy {
} }
/*
public static int setDNSProxying () throws Exception
{
String baseDir = findBaseDir();
final StringBuilder log = new StringBuilder();
int code;
String[] cmds = {baseDir + CMD_DNS_PROXYING_ADD};
code = TorServiceUtils.doShellCommand(cmds, log, true, true);
return code;
}*/
/*
public static int setIptablesDropAll() {
// iptables -A OUTPUT -j DROP
}
public static int setTransparentProxying() {
// Flush everything from iptables first
purgeNatIptables();
// Setup DNS redirection
setDNSProxying();
//
//
}
*/
public static int purgeIptables(Context context, TorifiedApp[] apps) throws Exception { public static int purgeIptables(Context context, TorifiedApp[] apps) throws Exception {
String baseDir = findBaseDir(); String baseDir = findBaseDir();
@ -187,28 +153,7 @@ public class TorTransProxy {
} }
/*
public static boolean purgeIptables() {
String baseDir = findBaseDir();
StringBuilder res = new StringBuilder();
try {
String[] cmds = {baseDir + CMD_NAT_FLUSH, baseDir + CMD_FILTER_FLUSH};
int code = TorServiceUtils.doShellCommand(cmds, res, true, true);
if (code != 0) {
Log.w(TAG, "error purging iptables. exit code: " + code + "\n" + res);
return false;
}
return true;
} catch (Exception e) {
Log.w(TAG,"error purging iptables: " + e);
return false;
}
}*/
public static int setTransparentProxyingByApp(Context context, TorifiedApp[] apps, boolean forceAll) throws Exception public static int setTransparentProxyingByApp(Context context, TorifiedApp[] apps, boolean forceAll) throws Exception
{ {
@ -288,23 +233,50 @@ public class TorTransProxy {
script.append(" --dport 53"); //drop all UDP packets as Tor won't handle them script.append(" --dport 53"); //drop all UDP packets as Tor won't handle them
if (ipTablesOld) if (ipTablesOld)
script.append(" -j DNAT --to 127.0.0.1:9040"); script.append(" -j DNAT --to 127.0.0.1:5400");
else else
script.append(" -j REDIRECT --to-ports 9040"); script.append(" -j REDIRECT --to-ports 5400");
script.append(" || exit\n"); script.append(" || exit\n");
//EVERYTHING ELSE UDP - DROP! //EVERYTHING ELSE UDP - DROP!
if (!ipTablesOld) //for some reason this doesn't work on iptables 1.3.7 if (ipTablesOld) //for some reason this doesn't work on iptables 1.3.7
{ {
script.append(baseDir); script.append(baseDir);
script.append("iptables"); script.append("iptables");
script.append(" -A OUTPUT -p udp -m owner --uid-owner "); script.append(" -t nat -A OUTPUT -m owner --uid-owner ");
script.append(apps[i].getUid()); script.append(apps[i].getUid());
script.append(" -j DROP"); //drop all other packets as Tor won't handle them script.append(" -j DROP"); //drop all other packets as Tor won't handle them
script.append(" || exit\n"); script.append(" || exit\n");
} }
else
{
script.append(baseDir);
script.append("iptables -t filter");
script.append(" -A OUTPUT -p tcp");
script.append(" -m owner --uid-owner ");
script.append(apps[i].getUid());
script.append(" -m tcp --dport 9040 -j ACCEPT");
script.append(" || exit\n");
script.append(baseDir);
script.append("iptables -t filter");
script.append(" -A OUTPUT -p udp");
script.append(" -m owner --uid-owner ");
script.append(apps[i].getUid());
script.append(" -m udp --dport 5400 -j ACCEPT");
script.append(" || exit\n");
script.append(baseDir);
script.append("iptables");
script.append(" -t filter -A OUTPUT -m owner --uid-owner ");
script.append(apps[i].getUid());
script.append(" -j DROP"); //drop all other packets as Tor won't handle them
script.append(" || exit\n");
}
} }
} }
@ -319,52 +291,4 @@ public class TorTransProxy {
} }
public static boolean setTransparentProxyingByPort(Context context, String[] ports) {
String baseDir = findBaseDir();
final StringBuilder script = new StringBuilder();
try {
int code;
for (int i = 0; i < ports.length; i++)
{
Log.d(TAG,"enabling transproxy for port: " + ports[i]);
//TCP
script.append(baseDir);
script.append("iptables -t nat");
script.append("-A PREROUTING -p tcp --dport ");
script.append(ports[i]);
script.append(" -j DNAT --to 127.0.0.1:9040");
script.append(" || exit\n");
//UDP
script.append(baseDir);
script.append("iptables -t nat");
script.append("-A PREROUTING -p udp --dport ");
script.append(ports[i]);
script.append(" -j DNAT --to 127.0.0.1:9040");
script.append(" || exit\n");
}
StringBuilder res = new StringBuilder();
String[] cmd = {script.toString()};
code = TorServiceUtils.doShellCommand(cmd, res, true, true);
String msg = res.toString();
Log.d(TAG,cmd[0] + ";errCode=" + code + ";resp=" + msg);
} catch (Exception e) {
Log.w(TAG, "error refreshing iptables: " + e);
}
return false;
}
} }