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52cf47619f45b5da1f64162c864b2dbbaab3bf61
briar/jtorctl.patch
akwizgran 12192aea43 Patched jtorctl so a control connection can be used by multiple threads. 
Various thread safety fixes, saner use of exceptions, and code
reformatting. The Tor plugin now creates a single control connection at
startup and closes it at shutdown. Fixes issue #3611962.
2013-05-16 20:02:48 +01:00

1687 lines
68 KiB
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diff -Bbur jtorctl/net/freehaven/tor/control/Bytes.java jtorctl-briar/net/freehaven/tor/control/Bytes.java
--- jtorctl/net/freehaven/tor/control/Bytes.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/Bytes.java 2013-05-16 19:56:30.000000000 +0100
@@ -16,46 +16,43 @@
/** Write the two-byte value in 's' into the byte array 'ba', starting at
* the index 'pos'. */
public static void setU16(byte[] ba, int pos, short s) {
- ba[pos] = (byte)((s >> 8) & 0xff);
- ba[pos+1] = (byte)((s ) & 0xff);
+ ba[pos] = (byte) ((s >> 8) & 0xff);
+ ba[pos + 1] = (byte) (s & 0xff);
}
/** Write the four-byte value in 'i' into the byte array 'ba', starting at
* the index 'pos'. */
public static void setU32(byte[] ba, int pos, int i) {
- ba[pos] = (byte)((i >> 24) & 0xff);
- ba[pos+1] = (byte)((i >> 16) & 0xff);
- ba[pos+2] = (byte)((i >> 8) & 0xff);
- ba[pos+3] = (byte)((i ) & 0xff);
+ ba[pos] = (byte) ((i >> 24) & 0xff);
+ ba[pos + 1] = (byte) ((i >> 16) & 0xff);
+ ba[pos + 2] = (byte) ((i >> 8) & 0xff);
+ ba[pos + 3] = (byte) (i & 0xff);
}
/** Return the four-byte value starting at index 'pos' within 'ba' */
public static int getU32(byte[] ba, int pos) {
- return
- ((ba[pos ]&0xff)<<24) |
- ((ba[pos+1]&0xff)<<16) |
- ((ba[pos+2]&0xff)<< 8) |
- ((ba[pos+3]&0xff));
+ return ((ba[pos] & 0xff) << 24) |
+ ((ba[pos + 1] & 0xff) << 16) |
+ ((ba[pos + 2] & 0xff) << 8) |
+ ((ba[pos + 3] & 0xff));
}
public static String getU32S(byte[] ba, int pos) {
- return String.valueOf( (getU32(ba,pos))&0xffffffffL );
+ return String.valueOf((getU32(ba, pos)) & 0xffffffffL);
}
/** Return the two-byte value starting at index 'pos' within 'ba' */
public static int getU16(byte[] ba, int pos) {
- return
- ((ba[pos ]&0xff)<<8) |
- ((ba[pos+1]&0xff));
+ return ((ba[pos] & 0xff) << 8) |
+ ((ba[pos + 1] & 0xff));
}
/** Return the string starting at position 'pos' of ba and extending
* until a zero byte or the end of the string. */
public static String getNulTerminatedStr(byte[] ba, int pos) {
- int len, maxlen = ba.length-pos;
- for (len=0; len<maxlen; ++len) {
- if (ba[pos+len] == 0)
- break;
+ int len, maxlen = ba.length - pos;
+ for(len = 0; len < maxlen; ++len) {
+ if(ba[pos + len] == 0) break;
}
return new String(ba, pos, len);
}
@@ -64,18 +61,16 @@
* Read bytes from 'ba' starting at 'pos', dividing them into strings
* along the character in 'split' and writing them into 'lst'
*/
- public static void splitStr(List<String> lst, byte[] ba, int pos, byte split) {
- while (pos < ba.length && ba[pos] != 0) {
+ public static void splitStr(List<String> lst, byte[] ba, int pos,
+ byte split) {
+ while(pos < ba.length && ba[pos] != 0) {
int len;
- for (len=0; pos+len < ba.length; ++len) {
- if (ba[pos+len] == 0 || ba[pos+len] == split)
- break;
+ for(len = 0; pos + len < ba.length; ++len) {
+ if(ba[pos + len] == 0 || ba[pos + len] == split) break;
}
- if (len>0)
- lst.add(new String(ba, pos, len));
+ if(len > 0) lst.add(new String(ba, pos, len));
pos += len;
- if (ba[pos] == split)
- ++pos;
+ if(ba[pos] == split) ++pos;
}
}
@@ -86,11 +81,8 @@
public static List<String> splitStr(List<String> lst, String str) {
// split string on spaces, include trailing/leading
String[] tokenArray = str.split(" ", -1);
- if (lst == null) {
- lst = Arrays.asList( tokenArray );
- } else {
- lst.addAll( Arrays.asList( tokenArray ) );
- }
+ if(lst == null) lst = Arrays.asList(tokenArray);
+ else lst.addAll(Arrays.asList(tokenArray));
return lst;
}
@@ -101,10 +93,10 @@
public static final String hex(byte[] ba) {
StringBuffer buf = new StringBuffer();
- for (int i = 0; i < ba.length; ++i) {
- int b = (ba[i]) & 0xff;
+ for(int i = 0; i < ba.length; ++i) {
+ int b = ba[i] & 0xff;
buf.append(NYBBLES[b >> 4]);
- buf.append(NYBBLES[b&0x0f]);
+ buf.append(NYBBLES[b & 0x0f]);
}
return buf.toString();
}
diff -Bbur jtorctl/net/freehaven/tor/control/ConfigEntry.java jtorctl-briar/net/freehaven/tor/control/ConfigEntry.java
--- jtorctl/net/freehaven/tor/control/ConfigEntry.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/ConfigEntry.java 2013-05-16 19:56:30.000000000 +0100
@@ -4,6 +4,11 @@
/** A single key-value pair from Tor's configuration. */
public class ConfigEntry {
+
+ public final String key;
+ public final String value;
+ public final boolean is_default;
+
public ConfigEntry(String k, String v) {
key = k;
value = v;
@@ -14,7 +20,4 @@
value = "";
is_default = true;
}
- public final String key;
- public final String value;
- public final boolean is_default;
}
diff -Bbur jtorctl/net/freehaven/tor/control/EventHandler.java jtorctl-briar/net/freehaven/tor/control/EventHandler.java
--- jtorctl/net/freehaven/tor/control/EventHandler.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/EventHandler.java 2013-05-16 19:56:30.000000000 +0100
@@ -9,9 +9,10 @@
* @see TorControlConnection#setEvents
*/
public interface EventHandler {
+
/**
- * Invoked when a circuit's status has changed.
- * Possible values for <b>status</b> are:
+ * Invoked when a circuit's status has changed. Possible values for
+ * <b>status</b> are:
* <ul>
* <li>"LAUNCHED" : circuit ID assigned to new circuit</li>
* <li>"BUILT" : all hops finished, can now accept streams</li>
@@ -19,7 +20,6 @@
* <li>"FAILED" : circuit closed (was not built)</li>
* <li>"CLOSED" : circuit closed (was built)</li>
* </ul>
- *
* <b>circID</b> is the alphanumeric identifier of the affected circuit,
* and <b>path</b> is a comma-separated list of alphanumeric ServerIDs.
*/
@@ -24,9 +24,10 @@
* and <b>path</b> is a comma-separated list of alphanumeric ServerIDs.
*/
public void circuitStatus(String status, String circID, String path);
+
/**
- * Invoked when a stream's status has changed.
- * Possible values for <b>status</b> are:
+ * Invoked when a stream's status has changed. Possible values for
+ * <b>status</b> are:
* <ul>
* <li>"NEW" : New request to connect</li>
* <li>"NEWRESOLVE" : New request to resolve an address</li>
@@ -37,7 +38,6 @@
* <li>"CLOSED" : Stream closed</li>
* <li>"DETACHED" : Detached from circuit; still retriable.</li>
* </ul>
- *
* <b>streamID</b> is the alphanumeric identifier of the affected stream,
* and its <b>target</b> is specified as address:port.
*/
@@ -42,18 +42,21 @@
* and its <b>target</b> is specified as address:port.
*/
public void streamStatus(String status, String streamID, String target);
+
/**
- * Invoked when the status of a connection to an OR has changed.
- * Possible values for <b>status</b> are ["LAUNCHED" | "CONNECTED" | "FAILED" | "CLOSED"].
- * <b>orName</b> is the alphanumeric identifier of the OR affected.
+ * Invoked when the status of a connection to an OR has changed. Possible
+ * values for <b>status</b> are ["LAUNCHED" | "CONNECTED" | "FAILED" |
+ * "CLOSED"]. <b>orName</b> is the alphanumeric identifier of the OR
+ * affected.
*/
public void orConnStatus(String status, String orName);
+
/**
- * Invoked once per second. <b>read</b> and <b>written</b> are
- * the number of bytes read and written, respectively, in
- * the last second.
+ * Invoked once per second. <b>read</b> and <b>written</b> are the number
+ * of bytes read and written, respectively, in the last second.
*/
public void bandwidthUsed(long read, long written);
+
/**
* Invoked whenever Tor learns about new ORs. The <b>orList</b> object
* contains the alphanumeric ServerIDs associated with the new ORs.
@@ -59,17 +62,18 @@
* contains the alphanumeric ServerIDs associated with the new ORs.
*/
public void newDescriptors(java.util.List<String> orList);
+
/**
- * Invoked when Tor logs a message.
- * <b>severity</b> is one of ["DEBUG" | "INFO" | "NOTICE" | "WARN" | "ERR"],
- * and <b>msg</b> is the message string.
+ * Invoked when Tor logs a message. <b>severity</b> is one of ["DEBUG" |
+ * "INFO" | "NOTICE" | "WARN" | "ERR"], and <b>msg</b> is the message
+ * string.
*/
public void message(String severity, String msg);
+
/**
- * Invoked when an unspecified message is received.
- * <type> is the message type, and <msg> is the message string.
+ * Invoked when an unspecified message is received. <type> is the message
+ * type, and <msg> is the message string.
*/
public void unrecognized(String type, String msg);
-
}
diff -Bbur jtorctl/net/freehaven/tor/control/examples/DebuggingEventHandler.java jtorctl-briar/net/freehaven/tor/control/examples/DebuggingEventHandler.java
--- jtorctl/net/freehaven/tor/control/examples/DebuggingEventHandler.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/examples/DebuggingEventHandler.java 2013-05-16 19:56:30.000000000 +0100
@@ -3,42 +3,48 @@
package net.freehaven.tor.control.examples;
import java.io.PrintWriter;
-import java.util.Iterator;
+import java.util.List;
+
import net.freehaven.tor.control.EventHandler;
public class DebuggingEventHandler implements EventHandler {
- protected PrintWriter out;
+ private final PrintWriter out;
- public DebuggingEventHandler(PrintWriter p) {
- out = p;
+ public DebuggingEventHandler(PrintWriter out) {
+ this.out = out;
}
public void circuitStatus(String status, String circID, String path) {
- out.println("Circuit "+circID+" is now "+status+" (path="+path+")");
+ out.println("Circuit " + circID + " is now " + status +
+ " (path=" + path + ")");
}
+
public void streamStatus(String status, String streamID, String target) {
- out.println("Stream "+streamID+" is now "+status+" (target="+target+")");
+ out.println("Stream " + streamID + " is now " + status +
+ " (target=" + target + ")");
}
+
public void orConnStatus(String status, String orName) {
- out.println("OR connection to "+orName+" is now "+status);
+ out.println("OR connection to " + orName + " is now " + status);
}
+
public void bandwidthUsed(long read, long written) {
- out.println("Bandwidth usage: "+read+" bytes read; "+
- written+" bytes written.");
+ out.println("Bandwidth usage: " + read + " bytes read; " +
+ written +" bytes written.");
}
- public void newDescriptors(java.util.List<String> orList) {
+
+ public void newDescriptors(List<String> orList) {
out.println("New descriptors for routers:");
- for (Iterator<String> i = orList.iterator(); i.hasNext(); )
- out.println(" "+i.next());
+ for(String or : orList) out.println(" " + or);
}
+
public void message(String type, String msg) {
- out.println("["+type+"] "+msg.trim());
+ out.println("[" + type + "] " + msg.trim());
}
public void unrecognized(String type, String msg) {
- out.println("unrecognized event ["+type+"] "+msg.trim());
+ out.println("unrecognized event [" + type + "] " + msg.trim());
}
-
}
diff -Bbur jtorctl/net/freehaven/tor/control/examples/Main.java jtorctl-briar/net/freehaven/tor/control/examples/Main.java
--- jtorctl/net/freehaven/tor/control/examples/Main.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/examples/Main.java 2013-05-16 19:56:30.000000000 +0100
@@ -2,59 +2,60 @@
// See LICENSE file for copying information
package net.freehaven.tor.control.examples;
-import net.freehaven.tor.control.*;
-import java.io.PrintWriter;
+import java.io.EOFException;
import java.io.IOException;
+import java.io.PrintWriter;
+import java.net.Socket;
import java.util.ArrayList;
-import java.util.List;
import java.util.Arrays;
+import java.util.List;
import java.util.Map;
-import java.util.Iterator;
+
+import net.freehaven.tor.control.ConfigEntry;
+import net.freehaven.tor.control.PasswordDigest;
+import net.freehaven.tor.control.TorControlCommands;
+import net.freehaven.tor.control.TorControlConnection;
+import net.freehaven.tor.control.TorControlError;
public class Main implements TorControlCommands {
public static void main(String args[]) {
- if (args.length < 1) {
+ if(args.length < 1) {
System.err.println("No command given.");
return;
}
try {
- if (args[0].equals("set-config")) {
+ if(args[0].equals("set-config")) {
setConfig(args);
- } else if (args[0].equals("get-config")) {
+ } else if(args[0].equals("get-config")) {
getConfig(args);
- } else if (args[0].equals("get-info")) {
+ } else if(args[0].equals("get-info")) {
getInfo(args);
- } else if (args[0].equals("listen")) {
+ } else if(args[0].equals("listen")) {
listenForEvents(args);
- } else if (args[0].equals("signal")) {
+ } else if(args[0].equals("signal")) {
signal(args);
- } else if (args[0].equals("auth")) {
+ } else if(args[0].equals("auth")) {
authDemo(args);
} else {
System.err.println("Unrecognized command: "+args[0]);
}
- } catch (java.io.EOFException ex) {
+ } catch(EOFException ex) {
System.out.println("Control socket closed by Tor.");
- } catch (IOException ex) {
- System.err.println("IO exception when talking to Tor process: "+
+ } catch(TorControlError ex) {
+ System.err.println("Error from Tor process: " +
+ ex + " [" + ex.getErrorMsg() + "]");
+ } catch(IOException ex) {
+ System.err.println("IO exception when talking to Tor process: " +
ex);
ex.printStackTrace(System.err);
- } catch (TorControlError ex) {
- System.err.println("Error from Tor process: "+
- ex+" ["+ex.getErrorMsg()+"]");
}
}
private static TorControlConnection getConnection(String[] args,
- boolean daemon)
- throws IOException {
- TorControlConnection conn = TorControlConnection.getConnection(
- new java.net.Socket("127.0.0.1", 9100));
- //if (conn instanceof TorControlConnection1) {
- // System.err.println("Debugging");
- // ((TorControlConnection1)conn).setDebugging(System.err);
- //}
+ boolean daemon) throws IOException {
+ Socket s = new Socket("127.0.0.1", 9100);
+ TorControlConnection conn = new TorControlConnection(s);
conn.launchThread(daemon);
conn.authenticate(new byte[0]);
return conn;
@@ -71,57 +72,52 @@
ArrayList<String> lst = new ArrayList<String>();
int i = 1;
boolean save = false;
- if (args[i].equals("-save")) {
+ if(args[i].equals("-save")) {
save = true;
++i;
}
- for (; i < args.length; i +=2) {
- lst.add(args[i]+" "+args[i+1]);
+ for(; i < args.length; i +=2) {
+ lst.add(args[i] + " " + args[i + 1]);
}
conn.setConf(lst);
- if (save) {
- conn.saveConf();
- }
+ if(save) conn.saveConf();
}
public static void getConfig(String[] args) throws IOException {
// Usage: get-config key key key
TorControlConnection conn = getConnection(args);
- List<ConfigEntry> lst = conn.getConf(Arrays.asList(args).subList(1,args.length));
- for (Iterator<ConfigEntry> i = lst.iterator(); i.hasNext(); ) {
- ConfigEntry e = i.next();
- System.out.println("KEY: "+e.key);
- System.out.println("VAL: "+e.value);
+ List<String> keys = Arrays.asList(args).subList(1, args.length);
+ List<ConfigEntry> lst = conn.getConf(keys);
+ for(ConfigEntry e : lst) {
+ System.out.println("KEY: " + e.key);
+ System.out.println("VAL: " + e.value);
}
}
public static void getInfo(String[] args) throws IOException {
TorControlConnection conn = getConnection(args);
- Map<String,String> m = conn.getInfo(Arrays.asList(args).subList(1,args.length));
- for (Iterator<Map.Entry<String, String>> i = m.entrySet().iterator(); i.hasNext(); ) {
- Map.Entry<String,String> e = i.next();
- System.out.println("KEY: "+e.getKey());
- System.out.println("VAL: "+e.getValue());
+ List<String> keys = Arrays.asList(args).subList(1, args.length);
+ Map<String, String> m = conn.getInfo(keys);
+ for(Map.Entry<String, String> e : m.entrySet()) {
+ System.out.println("KEY: " + e.getKey());
+ System.out.println("VAL: " + e.getValue());
}
}
public static void listenForEvents(String[] args) throws IOException {
// Usage: listen [circ|stream|orconn|bw|newdesc|info|notice|warn|error]*
TorControlConnection conn = getConnection(args, false);
- ArrayList<String> lst = new ArrayList<String>();
- for (int i = 1; i < args.length; ++i) {
- lst.add(args[i]);
- }
+ List<String> events = Arrays.asList(args).subList(1, args.length);
conn.setEventHandler(
new DebuggingEventHandler(new PrintWriter(System.out, true)));
- conn.setEvents(lst);
+ conn.setEvents(events);
}
public static void signal(String[] args) throws IOException {
// Usage signal [reload|shutdown|dump|debug|halt]
TorControlConnection conn = getConnection(args, false);
// distinguish shutdown signal from other signals
- if ("SHUTDOWN".equalsIgnoreCase(args[1])
+ if("SHUTDOWN".equalsIgnoreCase(args[1])
|| "HALT".equalsIgnoreCase(args[1])) {
conn.shutdownTor(args[1].toUpperCase());
} else {
@@ -130,17 +126,13 @@
}
public static void authDemo(String[] args) throws IOException {
-
PasswordDigest pwd = PasswordDigest.generateDigest();
- java.net.Socket s = new java.net.Socket("127.0.0.1", 9100);
- TorControlConnection conn = TorControlConnection.getConnection(s);
+ Socket s = new Socket("127.0.0.1", 9100);
+ TorControlConnection conn = new TorControlConnection(s);
conn.launchThread(true);
conn.authenticate(new byte[0]);
-
conn.setConf("HashedControlPassword", pwd.getHashedPassword());
-
- conn = TorControlConnection.getConnection(
- new java.net.Socket("127.0.0.1", 9100));
+ conn = new TorControlConnection(new Socket("127.0.0.1", 9100));
conn.launchThread(true);
conn.authenticate(pwd.getSecret());
}
diff -Bbur jtorctl/net/freehaven/tor/control/PasswordDigest.java jtorctl-briar/net/freehaven/tor/control/PasswordDigest.java
--- jtorctl/net/freehaven/tor/control/PasswordDigest.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/PasswordDigest.java 2013-05-16 19:56:30.000000000 +0100
@@ -2,19 +2,20 @@
// See LICENSE file for copying information
package net.freehaven.tor.control;
+import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.MessageDigest;
/**
- * A hashed digest of a secret password (used to set control connection
+ * A hashed digest of a secret password(used to set control connection
* security.)
*
* For the actual hashing algorithm, see RFC2440's secret-to-key conversion.
*/
public class PasswordDigest {
- byte[] secret;
- String hashedKey;
+ private final byte[] secret;
+ private final String hashedKey;
/** Return a new password digest with a random secret and salt. */
public static PasswordDigest generateDigest() {
@@ -35,17 +36,16 @@
*/
public PasswordDigest(byte[] secret, byte[] specifier) {
this.secret = secret.clone();
- if (specifier == null) {
+ if(specifier == null) {
specifier = new byte[9];
SecureRandom rng = new SecureRandom();
rng.nextBytes(specifier);
specifier[8] = 96;
}
- hashedKey = "16:"+encodeBytes(secretToKey(secret, specifier));
+ hashedKey = "16:" + Bytes.hex(secretToKey(secret, specifier));
}
- /** Return the secret used to generate this password hash.
- */
+ /** Return the secret used to generate this password hash. */
public byte[] getSecret() {
return secret.clone();
}
@@ -63,17 +63,17 @@
MessageDigest d;
try {
d = MessageDigest.getInstance("SHA-1");
- } catch (java.security.NoSuchAlgorithmException ex) {
+ } catch(NoSuchAlgorithmException ex) {
throw new RuntimeException("Can't run without sha-1.");
}
- int c = (specifier[8])&0xff;
- int count = (16 + (c&15)) << ((c>>4) + EXPBIAS);
+ int c = specifier[8] & 0xff;
+ int count = (16 + (c & 15)) << ((c >> 4) + EXPBIAS);
- byte[] tmp = new byte[8+secret.length];
+ byte[] tmp = new byte[8 + secret.length];
System.arraycopy(specifier, 0, tmp, 0, 8);
System.arraycopy(secret, 0, tmp, 8, secret.length);
- while (count > 0) {
- if (count >= tmp.length) {
+ while(count > 0) {
+ if(count >= tmp.length) {
d.update(tmp);
count -= tmp.length;
} else {
@@ -81,17 +81,9 @@
count = 0;
}
}
- byte[] key = new byte[20+9];
+ byte[] key = new byte[20 + 9];
System.arraycopy(d.digest(), 0, key, 9, 20);
System.arraycopy(specifier, 0, key, 0, 9);
return key;
}
-
- /** Return a hexadecimal encoding of a byte array. */
- // XXX There must be a better way to do this in Java.
- private static final String encodeBytes(byte[] ba) {
- return Bytes.hex(ba);
- }
-
}
-
diff -Bbur jtorctl/net/freehaven/tor/control/TorControlCommands.java jtorctl-briar/net/freehaven/tor/control/TorControlCommands.java
--- jtorctl/net/freehaven/tor/control/TorControlCommands.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/TorControlCommands.java 2013-05-16 19:56:30.000000000 +0100
@@ -119,7 +119,10 @@
public static final byte OR_CONN_STATUS_CLOSED = 0x03;
public static final String[] OR_CONN_STATUS_NAMES = {
- "LAUNCHED","CONNECTED","FAILED","CLOSED"
+ "LAUNCHED",
+ "CONNECTED",
+ "FAILED",
+ "CLOSED"
};
public static final byte SIGNAL_HUP = 0x01;
diff -Bbur jtorctl/net/freehaven/tor/control/TorControlConnection.java jtorctl-briar/net/freehaven/tor/control/TorControlConnection.java
--- jtorctl/net/freehaven/tor/control/TorControlConnection.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/TorControlConnection.java 2013-05-16 19:56:30.000000000 +0100
@@ -2,120 +2,107 @@
// See LICENSE file for copying information
package net.freehaven.tor.control;
+import java.io.BufferedReader;
import java.io.IOException;
-import java.net.SocketException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintStream;
+import java.io.PrintWriter;
+import java.io.Reader;
+import java.io.Writer;
+import java.net.Socket;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
-import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
-import java.util.concurrent.CancellationException;
/** A connection to a running Tor process as specified in control-spec.txt. */
-public class TorControlConnection implements TorControlCommands
-{
+public class TorControlConnection implements TorControlCommands {
- protected EventHandler handler;
+ private final LinkedList<Waiter> waiters;
+ private final BufferedReader input;
+ private final Writer output;
- protected LinkedList<Waiter> waiters;
+ private ControlParseThread thread; // Locking: this
- protected ControlParseThread thread;
+ private volatile EventHandler handler;
+ private volatile PrintWriter debugOutput;
+ private volatile IOException parseThreadException;
- protected java.io.BufferedReader input;
+ private static class Waiter {
- protected java.io.Writer output;
-
- protected java.io.PrintWriter debugOutput;
-
- static class Waiter {
List<ReplyLine> response;
- public synchronized List<ReplyLine> getResponse() {
- try {
- while (response == null) {
- wait();
- }
- } catch (InterruptedException ex) {
- throw new CancellationException(
- "Please don't interrupt library calls.");
- }
+
+ synchronized List<ReplyLine> getResponse() throws InterruptedException {
+ while(response == null) wait();
return response;
}
- public synchronized void setResponse(List<ReplyLine> response) {
+
+ synchronized void setResponse(List<ReplyLine> response) {
this.response = response;
notifyAll();
}
}
- static class ReplyLine {
- public String status;
- public String msg;
- public String rest;
+ private static class ReplyLine {
+
+ final String status;
+ final String msg;
+ final String rest;
ReplyLine(String status, String msg, String rest) {
- this.status = status; this.msg = msg; this.rest = rest;
- }
+ this.status = status;
+ this.msg = msg;
+ this.rest = rest;
}
-
- public static TorControlConnection getConnection(java.net.Socket sock)
- throws IOException
- {
- return new TorControlConnection(sock);
}
/** Create a new TorControlConnection to communicate with Tor over
* a given socket. After calling this constructor, it is typical to
* call launchThread and authenticate. */
- public TorControlConnection(java.net.Socket connection)
- throws IOException {
- this(connection.getInputStream(), connection.getOutputStream());
+ public TorControlConnection(Socket s) throws IOException {
+ this(s.getInputStream(), s.getOutputStream());
}
/** Create a new TorControlConnection to communicate with Tor over
* an arbitrary pair of data streams.
*/
- public TorControlConnection(java.io.InputStream i, java.io.OutputStream o) {
- this(new java.io.InputStreamReader(i),
- new java.io.OutputStreamWriter(o));
+ public TorControlConnection(InputStream i, OutputStream o) {
+ this(new InputStreamReader(i), new OutputStreamWriter(o));
}
- public TorControlConnection(java.io.Reader i, java.io.Writer o) {
- this.output = o;
- if (i instanceof java.io.BufferedReader)
- this.input = (java.io.BufferedReader) i;
- else
- this.input = new java.io.BufferedReader(i);
-
- this.waiters = new LinkedList<Waiter>();
+ public TorControlConnection(Reader i, Writer o) {
+ if(i instanceof BufferedReader) input = (BufferedReader) i;
+ else input = new BufferedReader(i);
+ output = o;
+ waiters = new LinkedList<Waiter>();
}
- protected final void writeEscaped(String s) throws IOException {
+ private void writeEscaped(String s) throws IOException {
StringTokenizer st = new StringTokenizer(s, "\n");
- while (st.hasMoreTokens()) {
+ while(st.hasMoreTokens()) {
String line = st.nextToken();
- if (line.startsWith("."))
- line = "."+line;
- if (line.endsWith("\r"))
- line += "\n";
- else
- line += "\r\n";
- if (debugOutput != null)
- debugOutput.print(">> "+line);
+ if(line.startsWith(".")) line = "." + line;
+ if(line.endsWith("\r")) line += "\n";
+ else line += "\r\n";
+ if(debugOutput != null) debugOutput.print(">> " + line);
output.write(line);
}
output.write(".\r\n");
- if (debugOutput != null)
- debugOutput.print(">> .\n");
+ if(debugOutput != null) debugOutput.print(">> .\n");
}
- protected static final String quote(String s) {
+ private static final String quote(String s) {
StringBuffer sb = new StringBuffer("\"");
- for (int i = 0; i < s.length(); ++i) {
+ for(int i = 0; i < s.length(); ++i) {
char c = s.charAt(i);
- switch (c)
- {
+ switch (c) {
case '\r':
case '\n':
case '\\':
@@ -128,15 +115,15 @@
return sb.toString();
}
- protected final ArrayList<ReplyLine> readReply() throws IOException {
+ private ArrayList<ReplyLine> readReply() throws IOException {
ArrayList<ReplyLine> reply = new ArrayList<ReplyLine>();
char c;
do {
String line = input.readLine();
- if (line == null) {
+ if(line == null) {
// if line is null, the end of the stream has been reached, i.e.
// the connection to Tor has been closed!
- if (reply.isEmpty()) {
+ if(reply.isEmpty()) {
// nothing received so far, can exit cleanly
return reply;
}
@@ -144,91 +131,86 @@
throw new TorControlSyntaxError("Connection to Tor " +
" broke down while receiving reply!");
}
- if (debugOutput != null)
- debugOutput.println("<< "+line);
- if (line.length() < 4)
- throw new TorControlSyntaxError("Line (\""+line+"\") too short");
- String status = line.substring(0,3);
+ if(debugOutput != null) debugOutput.println("<< " + line);
+ if(line.length() < 4) {
+ throw new TorControlSyntaxError("Line (\"" + line +
+ "\") too short");
+ }
+ String status = line.substring(0, 3);
c = line.charAt(3);
String msg = line.substring(4);
String rest = null;
- if (c == '+') {
+ if(c == '+') {
StringBuffer data = new StringBuffer();
- while (true) {
+ while(true) {
line = input.readLine();
- if (debugOutput != null)
- debugOutput.print("<< "+line);
- if (line.equals("."))
- break;
- else if (line.startsWith("."))
- line = line.substring(1);
+ if(debugOutput != null) debugOutput.print("<< " + line);
+ if(line.equals(".")) break;
+ if(line.startsWith(".")) line = line.substring(1);
data.append(line).append('\n');
}
rest = data.toString();
}
reply.add(new ReplyLine(status, msg, rest));
- } while (c != ' ');
-
+ } while(c != ' ');
return reply;
}
- protected synchronized List<ReplyLine> sendAndWaitForResponse(String s,String rest)
- throws IOException {
+ private synchronized List<ReplyLine> sendAndWaitForResponse(String s,
+ String rest) throws IOException {
+ if(parseThreadException != null) throw parseThreadException;
checkThread();
Waiter w = new Waiter();
- if (debugOutput != null)
- debugOutput.print(">> "+s);
- synchronized (waiters) {
+ if(debugOutput != null) debugOutput.print(">> " + s);
+ synchronized(waiters) {
output.write(s);
- if (rest != null)
- writeEscaped(rest);
+ if(rest != null) writeEscaped(rest);
output.flush();
waiters.addLast(w);
}
- List<ReplyLine> lst = w.getResponse();
- for (Iterator<ReplyLine> i = lst.iterator(); i.hasNext(); ) {
- ReplyLine c = i.next();
- if (! c.status.startsWith("2"))
- throw new TorControlError("Error reply: "+c.msg);
+ List<ReplyLine> lst;
+ try {
+ lst = w.getResponse();
+ } catch(InterruptedException ex) {
+ throw new IOException(ex);
+ }
+ for(ReplyLine line : lst) {
+ if(!line.status.startsWith("2"))
+ throw new TorControlError("Error reply: " + line.msg);
}
return lst;
}
/** Helper: decode a CMD_EVENT command and dispatch it to our
* EventHandler (if any). */
- protected void handleEvent(ArrayList<ReplyLine> events) {
- if (handler == null)
- return;
-
- for (Iterator<ReplyLine> i = events.iterator(); i.hasNext(); ) {
- ReplyLine line = i.next();
+ private void handleEvent(ArrayList<ReplyLine> events) {
+ if(handler == null) return;
+ for(ReplyLine line : events) {
int idx = line.msg.indexOf(' ');
String tp = line.msg.substring(0, idx).toUpperCase();
String rest = line.msg.substring(idx+1);
- if (tp.equals("CIRC")) {
+ if(tp.equals("CIRC")) {
List<String> lst = Bytes.splitStr(null, rest);
- handler.circuitStatus(lst.get(1),
- lst.get(0),
- lst.get(1).equals("LAUNCHED")
- || lst.size() < 2 ? ""
- : lst.get(2));
- } else if (tp.equals("STREAM")) {
+ String path;
+ if(lst.get(1).equals("LAUNCHED") || lst.size() < 2) path = "";
+ else path = lst.get(2);
+ handler.circuitStatus(lst.get(1), lst.get(0), path);
+ } else if(tp.equals("STREAM")) {
List<String> lst = Bytes.splitStr(null, rest);
- handler.streamStatus(lst.get(1),
- lst.get(0),
- lst.get(3));
+ handler.streamStatus(lst.get(1), lst.get(0), lst.get(3));
// XXXX circID.
- } else if (tp.equals("ORCONN")) {
+ } else if(tp.equals("ORCONN")) {
List<String> lst = Bytes.splitStr(null, rest);
handler.orConnStatus(lst.get(1), lst.get(0));
- } else if (tp.equals("BW")) {
+ } else if(tp.equals("BW")) {
List<String> lst = Bytes.splitStr(null, rest);
- handler.bandwidthUsed(Integer.parseInt(lst.get(0)),
- Integer.parseInt(lst.get(1)));
- } else if (tp.equals("NEWDESC")) {
+ int read = Integer.parseInt(lst.get(0));
+ int written = Integer.parseInt(lst.get(1));
+ handler.bandwidthUsed(read, written);
+ } else if(tp.equals("NEWDESC")) {
List<String> lst = Bytes.splitStr(null, rest);
handler.newDescriptors(lst);
- } else if (tp.equals("DEBUG") ||
+ } else if(tp.equals("DEBUG") ||
tp.equals("INFO") ||
tp.equals("NOTICE") ||
tp.equals("WARN") ||
@@ -240,23 +222,22 @@
}
}
-
/** Sets <b>w</b> as the PrintWriter for debugging output,
* which writes out all messages passed between Tor and the controller.
- * Outgoing messages are preceded by "\>\>" and incoming messages are preceded
- * by "\<\<"
+ * Outgoing messages are preceded by "\>\>" and incoming messages are
+ * preceded by "\<\<"
*/
- public void setDebugging(java.io.PrintWriter w) {
+ public void setDebugging(PrintWriter w) {
debugOutput = w;
}
/** Sets <b>s</b> as the PrintStream for debugging output,
* which writes out all messages passed between Tor and the controller.
- * Outgoing messages are preceded by "\>\>" and incoming messages are preceded
- * by "\<\<"
+ * Outgoing messages are preceded by "\>\>" and incoming messages are
+ * preceded by "\<\<"
*/
- public void setDebugging(java.io.PrintStream s) {
- debugOutput = new java.io.PrintWriter(s, true);
+ public void setDebugging(PrintStream s) {
+ debugOutput = new PrintWriter(s, true);
}
/** Set the EventHandler object that will be notified of any
@@ -271,52 +252,43 @@
* This is necessary to handle asynchronous events and synchronous
* responses that arrive independantly over the same socket.
*/
- public Thread launchThread(boolean daemon) {
+ public synchronized Thread launchThread(boolean daemon) {
ControlParseThread th = new ControlParseThread();
- if (daemon)
- th.setDaemon(true);
+ if(daemon) th.setDaemon(true);
th.start();
- this.thread = th;
+ thread = th;
return th;
}
- protected class ControlParseThread extends Thread {
- boolean stopped = false;
+ private class ControlParseThread extends Thread {
+
@Override
public void run() {
try {
react();
- } catch (SocketException ex) {
- if (stopped) // we expected this exception
- return;
- throw new RuntimeException(ex);
- } catch (IOException ex) {
- throw new RuntimeException(ex);
- }
+ } catch(IOException ex) {
+ parseThreadException = ex;
}
- public void stopListening() {
- this.stopped = true;
}
}
- protected final void checkThread() {
- if (thread == null)
- launchThread(true);
+ private synchronized void checkThread() {
+ if(thread == null) launchThread(true);
}
/** helper: implement the main background loop. */
- protected void react() throws IOException {
- while (true) {
+ private void react() throws IOException {
+ while(true) {
ArrayList<ReplyLine> lst = readReply();
- if (lst.isEmpty()) {
+ if(lst.isEmpty()) {
// connection has been closed remotely! end the loop!
return;
}
- if ((lst.get(0)).status.startsWith("6"))
+ if((lst.get(0)).status.startsWith("6")) {
handleEvent(lst);
- else {
+ } else {
Waiter w;
- synchronized (waiters) {
+ synchronized(waiters) {
w = waiters.removeFirst();
}
w.setResponse(lst);
@@ -327,17 +299,14 @@
/** Change the value of the configuration option 'key' to 'val'.
*/
public void setConf(String key, String value) throws IOException {
- List<String> lst = new ArrayList<String>();
- lst.add(key+" "+value);
- setConf(lst);
+ setConf(Arrays.asList(key + " " + value));
}
/** Change the values of the configuration options stored in kvMap. */
public void setConf(Map<String, String> kvMap) throws IOException {
List<String> lst = new ArrayList<String>();
- for (Iterator<Map.Entry<String,String>> it = kvMap.entrySet().iterator(); it.hasNext(); ) {
- Map.Entry<String,String> ent = it.next();
- lst.add(ent.getKey()+" "+ent.getValue()+"\n");
+ for(Map.Entry<String, String> e : kvMap.entrySet()) {
+ lst.add(e.getKey() + " " + e.getValue() + "\n");
}
setConf(lst);
}
@@ -345,34 +314,35 @@
/** Changes the values of the configuration options stored in
* <b>kvList</b>. Each list element in <b>kvList</b> is expected to be
* String of the format "key value".
- *
+ * <p>
* Tor behaves as though it had just read each of the key-value pairs
* from its configuration file. Keywords with no corresponding values have
* their configuration values reset to their defaults. setConf is
- * all-or-nothing: if there is an error in any of the configuration settings,
- * Tor sets none of them.
- *
+ * all-or-nothing: if there is an error in any of the configuration
+ * settings, Tor sets none of them.
+ * <p>
* When a configuration option takes multiple values, or when multiple
- * configuration keys form a context-sensitive group (see getConf below), then
- * setting any of the options in a setConf command is taken to reset all of
- * the others. For example, if two ORBindAddress values are configured, and a
- * command arrives containing a single ORBindAddress value, the new
- * command's value replaces the two old values.
- *
+ * configuration keys form a context-sensitive group (see getConf below),
+ * then setting any of the options in a setConf command is taken to reset
+ * all of the others. For example, if two ORBindAddress values are
+ * configured, and a command arrives containing a single ORBindAddress
+ * value, the new command's value replaces the two old values.
+ * <p>
* To remove all settings for a given option entirely (and go back to its
- * default value), include a String in <b>kvList</b> containing the key and no value.
+ * default value), include a String in <b>kvList</b> containing the key and
+ * no value.
*/
public void setConf(Collection<String> kvList) throws IOException {
- if (kvList.size() == 0)
- return;
+ if(kvList.size() == 0) return;
StringBuffer b = new StringBuffer("SETCONF");
- for (Iterator<String> it = kvList.iterator(); it.hasNext(); ) {
- String kv = it.next();
- int i = kv.indexOf(' ');
- if (i == -1)
+ for(String kv : kvList) {
+ int idx = kv.indexOf(' ');
+ if(idx == -1) {
b.append(" ").append(kv);
- b.append(" ").append(kv.substring(0,i)).append("=")
- .append(quote(kv.substring(i+1)));
+ } else {
+ b.append(" ").append(kv.substring(0, idx));
+ b.append("=").append(quote(kv.substring(idx + 1)));
+ }
}
b.append("\r\n");
sendAndWaitForResponse(b.toString(), null);
@@ -382,11 +352,9 @@
* default values.
**/
public void resetConf(Collection<String> keys) throws IOException {
- if (keys.size() == 0)
- return;
+ if(keys.size() == 0) return;
StringBuffer b = new StringBuffer("RESETCONF");
- for (Iterator<String> it = keys.iterator(); it.hasNext(); ) {
- String key = it.next();
+ for(String key : keys) {
b.append(" ").append(key);
}
b.append("\r\n");
@@ -400,36 +368,38 @@
return getConf(lst);
}
- /** Requests the values of the configuration variables listed in <b>keys</b>.
- * Results are returned as a list of ConfigEntry objects.
- *
+ /** Requests the values of the configuration variables listed in
+ * <b>keys</b>. Results are returned as a list of ConfigEntry objects.
+ * <p>
* If an option appears multiple times in the configuration, all of its
* key-value pairs are returned in order.
- *
+ * <p>
* Some options are context-sensitive, and depend on other options with
* different keywords. These cannot be fetched directly. Currently there
* is only one such option: clients should use the "HiddenServiceOptions"
* virtual keyword to get all HiddenServiceDir, HiddenServicePort,
* HiddenServiceNodes, and HiddenServiceExcludeNodes option settings.
*/
- public List<ConfigEntry> getConf(Collection<String> keys) throws IOException {
+ public List<ConfigEntry> getConf(Collection<String> keys)
+ throws IOException {
StringBuffer sb = new StringBuffer("GETCONF");
- for (Iterator<String> it = keys.iterator(); it.hasNext(); ) {
- String key = it.next();
+ for(String key : keys) {
sb.append(" ").append(key);
}
sb.append("\r\n");
List<ReplyLine> lst = sendAndWaitForResponse(sb.toString(), null);
List<ConfigEntry> result = new ArrayList<ConfigEntry>();
- for (Iterator<ReplyLine> it = lst.iterator(); it.hasNext(); ) {
- String kv = (it.next()).msg;
+ for(ReplyLine line : lst) {
+ String kv = line.msg;
int idx = kv.indexOf('=');
- if (idx >= 0)
- result.add(new ConfigEntry(kv.substring(0, idx),
- kv.substring(idx+1)));
- else
+ if(idx >= 0) {
+ String key = kv.substring(0, idx);
+ String value = kv.substring(idx + 1);
+ result.add(new ConfigEntry(key, value));
+ } else {
result.add(new ConfigEntry(kv));
}
+ }
return result;
}
@@ -437,37 +407,41 @@
* Each element of <b>events</b> is one of the following Strings:
* ["CIRC" | "STREAM" | "ORCONN" | "BW" | "DEBUG" |
* "INFO" | "NOTICE" | "WARN" | "ERR" | "NEWDESC" | "ADDRMAP"] .
- *
+ * <p>
* Any events not listed in the <b>events</b> are turned off; thus, calling
- * setEvents with an empty <b>events</b> argument turns off all event reporting.
+ * setEvents with an empty <b>events</b> argument turns off all event
+ * reporting.
*/
public void setEvents(List<String> events) throws IOException {
StringBuffer sb = new StringBuffer("SETEVENTS");
- for (Iterator<String> it = events.iterator(); it.hasNext(); ) {
- sb.append(" ").append(it.next());
+ for(String event : events) {
+ sb.append(" ").append(event);
}
sb.append("\r\n");
sendAndWaitForResponse(sb.toString(), null);
}
/** Authenticates the controller to the Tor server.
- *
+ * <p>
* By default, the current Tor implementation trusts all local users, and
- * the controller can authenticate itself by calling authenticate(new byte[0]).
- *
- * If the 'CookieAuthentication' option is true, Tor writes a "magic cookie"
- * file named "control_auth_cookie" into its data directory. To authenticate,
- * the controller must send the contents of this file in <b>auth</b>.
- *
- * If the 'HashedControlPassword' option is set, <b>auth</b> must contain the salted
- * hash of a secret password. The salted hash is computed according to the
- * S2K algorithm in RFC 2440 (OpenPGP), and prefixed with the s2k specifier.
- * This is then encoded in hexadecimal, prefixed by the indicator sequence
- * "16:".
- *
+ * the controller can authenticate itself by calling
+ * authenticate(new byte[0]).
+ * <p>
+ * If the 'CookieAuthentication' option is true, Tor writes a "magic
+ * cookie" file named "control_auth_cookie" into its data directory. To
+ * authenticate, the controller must send the contents of this file in
+ * <b>auth</b>.
+ * <p>
+ * If the 'HashedControlPassword' option is set, <b>auth</b> must contain
+ * the salted hash of a secret password. The salted hash is computed
+ * according to the S2K algorithm in RFC 2440 (OpenPGP), and prefixed with
+ * the s2k specifier. This is then encoded in hexadecimal, prefixed by the
+ * indicator sequence "16:".
+ * <p>
* You can generate the salt of a password by calling
- * 'tor --hash-password <password>'
+ * <tt>'tor --hash-password &lt;password&gt;'</tt>
* or by using the provided PasswordDigest class.
+ * <p>
* To authenticate under this scheme, the controller sends Tor the original
* secret that was used to generate the password.
*/
@@ -476,7 +450,8 @@
sendAndWaitForResponse(cmd, null);
}
- /** Instructs the server to write out its configuration options into its torrc.
+ /** Instructs the server to write out its configuration options into its
+ * torrc.
*/
public void saveConf() throws IOException {
sendAndWaitForResponse("SAVECONF\r\n", null);
@@ -503,234 +478,239 @@
public void shutdownTor(String signal) throws IOException {
String s = "SIGNAL " + signal + "\r\n";
Waiter w = new Waiter();
- if (debugOutput != null)
- debugOutput.print(">> "+s);
- if (this.thread != null) {
- this.thread.stopListening();
- }
- synchronized (waiters) {
+ if(debugOutput != null) debugOutput.print(">> " + s);
+ synchronized(waiters) {
output.write(s);
output.flush();
waiters.addLast(w); // Prevent react() from finding the list empty
}
}
- /** Tells the Tor server that future SOCKS requests for connections to a set of original
- * addresses should be replaced with connections to the specified replacement
- * addresses. Each element of <b>kvLines</b> is a String of the form
- * "old-address new-address". This function returns the new address mapping.
- *
+ /** Tells the Tor server that future SOCKS requests for connections to a
+ * set of original addresses should be replaced with connections to the
+ * specified replacement addresses. Each element of <b>kvLines</b> is a
+ * String of the form "old-address new-address". This function returns the
+ * new address mapping.
+ * <p>
* The client may decline to provide a body for the original address, and
- * instead send a special null address ("0.0.0.0" for IPv4, "::0" for IPv6, or
- * "." for hostname), signifying that the server should choose the original
- * address itself, and return that address in the reply. The server
- * should ensure that it returns an element of address space that is unlikely
- * to be in actual use. If there is already an address mapped to the
- * destination address, the server may reuse that mapping.
- *
- * If the original address is already mapped to a different address, the old
- * mapping is removed. If the original address and the destination address
- * are the same, the server removes any mapping in place for the original
- * address.
- *
- * Mappings set by the controller last until the Tor process exits:
- * they never expire. If the controller wants the mapping to last only
- * a certain time, then it must explicitly un-map the address when that
- * time has elapsed.
+ * instead send a special null address ("0.0.0.0" for IPv4, "::0" for IPv6,
+ * or "." for hostname), signifying that the server should choose the
+ * original address itself, and return that address in the reply. The
+ * server should ensure that it returns an element of address space that is
+ * unlikely to be in actual use. If there is already an address mapped to
+ * the destination address, the server may reuse that mapping.
+ * <p>
+ * If the original address is already mapped to a different address, the
+ * old mapping is removed. If the original address and the destination
+ * address are the same, the server removes any mapping in place for the
+ * original address.
+ * <p>
+ * Mappings set by the controller last until the Tor process exits: they
+ * never expire. If the controller wants the mapping to last only a certain
+ * time, then it must explicitly un-map the address when that time has
+ * elapsed.
*/
- public Map<String,String> mapAddresses(Collection<String> kvLines) throws IOException {
+ public Map<String, String> mapAddresses(Collection<String> kvLines)
+ throws IOException {
StringBuffer sb = new StringBuffer("MAPADDRESS");
- for (Iterator<String> it = kvLines.iterator(); it.hasNext(); ) {
- String kv = it.next();
- int i = kv.indexOf(' ');
- sb.append(" ").append(kv.substring(0,i)).append("=")
- .append(quote(kv.substring(i+1)));
+ for(String kv : kvLines) {
+ int idx = kv.indexOf(' ');
+ sb.append(" ").append(kv.substring(0, idx));
+ sb.append("=").append(quote(kv.substring(idx + 1)));
}
sb.append("\r\n");
List<ReplyLine> lst = sendAndWaitForResponse(sb.toString(), null);
- Map<String,String> result = new HashMap<String,String>();
- for (Iterator<ReplyLine> it = lst.iterator(); it.hasNext(); ) {
- String kv = (it.next()).msg;
+ Map<String, String> result = new HashMap<String, String>();
+ for(ReplyLine line : lst) {
+ String kv = line.msg;
int idx = kv.indexOf('=');
- result.put(kv.substring(0, idx),
- kv.substring(idx+1));
+ result.put(kv.substring(0, idx), kv.substring(idx + 1));
}
return result;
}
- public Map<String,String> mapAddresses(Map<String,String> addresses) throws IOException {
+ public Map<String, String> mapAddresses(Map<String, String> addresses)
+ throws IOException {
List<String> kvList = new ArrayList<String>();
- for (Iterator<Map.Entry<String, String>> it = addresses.entrySet().iterator(); it.hasNext(); ) {
- Map.Entry<String,String> e = it.next();
- kvList.add(e.getKey()+" "+e.getValue());
+ for(Map.Entry<String, String> e : addresses.entrySet()) {
+ kvList.add(e.getKey() + " " + e.getValue());
}
return mapAddresses(kvList);
}
- public String mapAddress(String fromAddr, String toAddr) throws IOException {
+ public String mapAddress(String fromAddr, String toAddr)
+ throws IOException {
List<String> lst = new ArrayList<String>();
- lst.add(fromAddr+" "+toAddr+"\n");
- Map<String,String> m = mapAddresses(lst);
+ lst.add(fromAddr + " " + toAddr + "\n");
+ Map<String, String> m = mapAddresses(lst);
return m.get(fromAddr);
}
- /** Queries the Tor server for keyed values that are not stored in the torrc
- * configuration file. Returns a map of keys to values.
- *
+ /** Queries the Tor server for keyed values that are not stored in the
+ * torrc configuration file. Returns a map of keys to values.
+ * <p>
* Recognized keys include:
* <ul>
* <li>"version" : The version of the server's software, including the name
* of the software. (example: "Tor 0.0.9.4")</li>
- * <li>"desc/id/<OR identity>" or "desc/name/<OR nickname>" : the latest server
- * descriptor for a given OR, NUL-terminated. If no such OR is known, the
- * corresponding value is an empty string.</li>
- * <li>"network-status" : a space-separated list of all known OR identities.
- * This is in the same format as the router-status line in directories;
- * see tor-spec.txt for details.</li>
+ * <li>"desc/id/<OR identity>" or "desc/name/<OR nickname>" : the latest
+ * server descriptor for a given OR, NUL-terminated. If no such OR is
+ * known, the corresponding value is an empty string.</li>
+ * <li>"network-status" : a space-separated list of all known OR
+ * identities. This is in the same format as the router-status line in
+ * directories; see tor-spec.txt for details.</li>
* <li>"addr-mappings/all"</li>
* <li>"addr-mappings/config"</li>
* <li>"addr-mappings/cache"</li>
- * <li>"addr-mappings/control" : a space-separated list of address mappings, each
- * in the form of "from-address=to-address". The 'config' key
- * returns those address mappings set in the configuration; the 'cache'
+ * <li>"addr-mappings/control" : a space-separated list of address
+ * mappings, each in the form of "from-address=to-address". The 'config'
+ * key returns those address mappings set in the configuration; the 'cache'
* key returns the mappings in the client-side DNS cache; the 'control'
* key returns the mappings set via the control interface; the 'all'
* target returns the mappings set through any mechanism.</li>
- * <li>"circuit-status" : A series of lines as for a circuit status event. Each line is of the form:
- * "CircuitID CircStatus Path"</li>
- * <li>"stream-status" : A series of lines as for a stream status event. Each is of the form:
- * "StreamID StreamStatus CircID Target"</li>
- * <li>"orconn-status" : A series of lines as for an OR connection status event. Each is of the
- * form: "ServerID ORStatus"</li>
+ * <li>"circuit-status" : A series of lines as for a circuit status event.
+ * Each line is of the form: "CircuitID CircStatus Path"</li>
+ * <li>"stream-status" : A series of lines as for a stream status event.
+ * Each is of the form: "StreamID StreamStatus CircID Target"</li>
+ * <li>"orconn-status" : A series of lines as for an OR connection status
+ * event. Each is of the form: "ServerID ORStatus"</li>
* </ul>
*/
- public Map<String,String> getInfo(Collection<String> keys) throws IOException {
+ public Map<String, String> getInfo(Collection<String> keys)
+ throws IOException {
StringBuffer sb = new StringBuffer("GETINFO");
- for (Iterator<String> it = keys.iterator(); it.hasNext(); ) {
- sb.append(" ").append(it.next());
+ for(String key : keys) {
+ sb.append(" ").append(key);
}
sb.append("\r\n");
List<ReplyLine> lst = sendAndWaitForResponse(sb.toString(), null);
- Map<String,String> m = new HashMap<String,String>();
- for (Iterator<ReplyLine> it = lst.iterator(); it.hasNext(); ) {
- ReplyLine line = it.next();
+ Map<String, String> m = new HashMap<String, String>();
+ for(ReplyLine line : lst) {
int idx = line.msg.indexOf('=');
- if (idx<0)
- break;
- String k = line.msg.substring(0,idx);
+ if(idx < 0) break;
+ String k = line.msg.substring(0, idx);
String v;
- if (line.rest != null) {
- v = line.rest;
- } else {
- v = line.msg.substring(idx+1);
- }
+ if(line.rest != null) v = line.rest;
+ else v = line.msg.substring(idx + 1);
m.put(k, v);
}
return m;
}
-
-
- /** Return the value of the information field 'key' */
+ /** Returns the value of the information field 'key' */
public String getInfo(String key) throws IOException {
- List<String> lst = new ArrayList<String>();
- lst.add(key);
- Map<String,String> m = getInfo(lst);
+ Map<String, String> m = getInfo(Arrays.asList(key));
return m.get(key);
}
- /** An extendCircuit request takes one of two forms: either the <b>circID</b> is zero, in
- * which case it is a request for the server to build a new circuit according
- * to the specified path, or the <b>circID</b> is nonzero, in which case it is a
- * request for the server to extend an existing circuit with that ID according
- * to the specified <b>path</b>.
- *
- * If successful, returns the Circuit ID of the (maybe newly created) circuit.
+ /** An extendCircuit request takes one of two forms: either the
+ * <b>circID</b> is zero, in which case it is a request for the server to
+ * build a new circuit according to the specified path, or the
+ * <b>circID</b> is nonzero, in which case it is a request for the server
+ * to extend an existing circuit with that ID according to the specified
+ * <b>path</b>.
+ * <p>
+ * If successful, returns the Circuit ID of the (maybe newly created)
+ * circuit.
*/
public String extendCircuit(String circID, String path) throws IOException {
- List<ReplyLine> lst = sendAndWaitForResponse(
- "EXTENDCIRCUIT "+circID+" "+path+"\r\n", null);
- return (lst.get(0)).msg;
+ String cmd = "EXTENDCIRCUIT " + circID + " " + path + "\r\n";
+ List<ReplyLine> lst = sendAndWaitForResponse(cmd, null);
+ return lst.get(0).msg;
}
- /** Informs the Tor server that the stream specified by <b>streamID</b> should be
- * associated with the circuit specified by <b>circID</b>.
- *
- * Each stream may be associated with
- * at most one circuit, and multiple streams may share the same circuit.
- * Streams can only be attached to completed circuits (that is, circuits that
- * have sent a circuit status "BUILT" event or are listed as built in a
- * getInfo circuit-status request).
- *
+ /** Informs the Tor server that the stream specified by <b>streamID</b>
+ * should be associated with the circuit specified by <b>circID</b>.
+ * <p>
+ * Each stream may be associated with at most one circuit, and multiple
+ * streams may share the same circuit. Streams can only be attached to
+ * completed circuits (that is, circuits that have sent a circuit status
+ * "BUILT" event or are listed as built in a getInfo circuit-status
+ * request).
+ * <p>
* If <b>circID</b> is 0, responsibility for attaching the given stream is
* returned to Tor.
- *
- * By default, Tor automatically attaches streams to
- * circuits itself, unless the configuration variable
- * "__LeaveStreamsUnattached" is set to "1". Attempting to attach streams
- * via TC when "__LeaveStreamsUnattached" is false may cause a race between
- * Tor and the controller, as both attempt to attach streams to circuits.
+ * <p>
+ * By default, Tor automatically attaches streams to circuits itself,
+ * unless the configuration variable "__LeaveStreamsUnattached" is set to
+ * "1". Attempting to attach streams via TC when
+ * "__LeaveStreamsUnattached" is false may cause a race between Tor and the
+ * controller, as both attempt to attach streams to circuits.
*/
public void attachStream(String streamID, String circID)
throws IOException {
- sendAndWaitForResponse("ATTACHSTREAM "+streamID+" "+circID+"\r\n", null);
+ String cmd = "ATTACHSTREAM " + streamID + " " + circID + "\r\n";
+ sendAndWaitForResponse(cmd, null);
}
/** Tells Tor about the server descriptor in <b>desc</b>.
- *
+ * <p>
* The descriptor, when parsed, must contain a number of well-specified
* fields, including fields for its nickname and identity.
*/
// More documentation here on format of desc?
// No need for return value? control-spec.txt says reply is merely "250 OK" on success...
public String postDescriptor(String desc) throws IOException {
- List<ReplyLine> lst = sendAndWaitForResponse("+POSTDESCRIPTOR\r\n", desc);
- return (lst.get(0)).msg;
+ String cmd = "+POSTDESCRIPTOR\r\n";
+ List<ReplyLine> lst = sendAndWaitForResponse(cmd, desc);
+ return lst.get(0).msg;
}
- /** Tells Tor to change the exit address of the stream identified by <b>streamID</b>
- * to <b>address</b>. No remapping is performed on the new provided address.
- *
- * To be sure that the modified address will be used, this event must be sent
- * after a new stream event is received, and before attaching this stream to
- * a circuit.
- */
- public void redirectStream(String streamID, String address) throws IOException {
- sendAndWaitForResponse("REDIRECTSTREAM "+streamID+" "+address+"\r\n",
- null);
+ /** Tells Tor to change the exit address of the stream identified by
+ * <b>streamID</b> to <b>address</b>. No remapping is performed on the new
+ * provided address.
+ * <p>
+ * To be sure that the modified address will be used, this event must be
+ * sent after a new stream event is received, and before attaching this
+ * stream to a circuit.
+ */
+ public void redirectStream(String streamID, String address)
+ throws IOException {
+ String cmd = "REDIRECTSTREAM " + streamID + " " + address + "\r\n";
+ sendAndWaitForResponse(cmd, null);
}
/** Tells Tor to close the stream identified by <b>streamID</b>.
- * <b>reason</b> should be one of the Tor RELAY_END reasons given in tor-spec.txt, as a decimal:
+ * <b>reason</b> should be one of the Tor RELAY_END reasons given in
+ * tor-spec.txt, as a decimal:
* <ul>
* <li>1 -- REASON_MISC (catch-all for unlisted reasons)</li>
* <li>2 -- REASON_RESOLVEFAILED (couldn't look up hostname)</li>
* <li>3 -- REASON_CONNECTREFUSED (remote host refused connection)</li>
- * <li>4 -- REASON_EXITPOLICY (OR refuses to connect to host or port)</li>
+ * <li>4 -- REASON_EXITPOLICY (OR refuses to connect to host or
+ * port)</li>
* <li>5 -- REASON_DESTROY (Circuit is being destroyed)</li>
- * <li>6 -- REASON_DONE (Anonymized TCP connection was closed)</li>
- * <li>7 -- REASON_TIMEOUT (Connection timed out, or OR timed out while connecting)</li>
+ * <li>6 -- REASON_DONE (Anonymized TCP connection was
+ * closed)</li>
+ * <li>7 -- REASON_TIMEOUT (Connection timed out, or OR timed out
+ * while connecting)</li>
* <li>8 -- (unallocated)</li>
* <li>9 -- REASON_HIBERNATING (OR is temporarily hibernating)</li>
* <li>10 -- REASON_INTERNAL (Internal error at the OR)</li>
- * <li>11 -- REASON_RESOURCELIMIT (OR has no resources to fulfill request)</li>
+ * <li>11 -- REASON_RESOURCELIMIT (OR has no resources to fulfill
+ * request)</li>
* <li>12 -- REASON_CONNRESET (Connection was unexpectedly reset)</li>
- * <li>13 -- REASON_TORPROTOCOL (Sent when closing connection because of Tor protocol violations)</li>
+ * <li>13 -- REASON_TORPROTOCOL (Sent when closing connection because of
+ * Tor protocol violations)</li>
* </ul>
- *
- * Tor may hold the stream open for a while to flush any data that is pending.
+ * Tor may hold the stream open for a while to flush any data that is
+ * pending.
*/
- public void closeStream(String streamID, byte reason)
- throws IOException {
- sendAndWaitForResponse("CLOSESTREAM "+streamID+" "+reason+"\r\n",null);
+ public void closeStream(String streamID, byte reason) throws IOException {
+ String cmd = "CLOSESTREAM " + streamID + " " + reason + "\r\n";
+ sendAndWaitForResponse(cmd, null);
}
/** Tells Tor to close the circuit identified by <b>circID</b>.
- * If <b>ifUnused</b> is true, do not close the circuit unless it is unused.
+ * If <b>ifUnused</b> is true, do not close the circuit unless it is
+ * unused.
*/
- public void closeCircuit(String circID, boolean ifUnused) throws IOException {
- sendAndWaitForResponse("CLOSECIRCUIT "+circID+
- (ifUnused?" IFUNUSED":"")+"\r\n", null);
+ public void closeCircuit(String circID, boolean ifUnused)
+ throws IOException {
+ String cmd;
+ if(ifUnused) cmd = "CLOSECIRCUIT " + circID + " IFUNUSED\r\n";
+ else cmd = "CLOSECIRCUIT " + circID + "\r\n";
+ sendAndWaitForResponse(cmd, null);
}
}
diff -Bbur jtorctl/net/freehaven/tor/control/TorControlError.java jtorctl-briar/net/freehaven/tor/control/TorControlError.java
--- jtorctl/net/freehaven/tor/control/TorControlError.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/TorControlError.java 2013-05-16 19:56:30.000000000 +0100
@@ -2,13 +2,15 @@
// See LICENSE file for copying information
package net.freehaven.tor.control;
-/**
- * An exception raised when Tor tells us about an error.
- */
-public class TorControlError extends RuntimeException {
- static final long serialVersionUID = 2;
+import java.io.IOException;
+
+/** An exception raised when Tor tells us about an error. */
+public class TorControlError extends IOException {
+
+ private static final long serialVersionUID = 2;
+
+ private final int errorType;
- int errorType;
public TorControlError(int type, String s) {
super(s);
errorType = type;
@@ -19,13 +23,13 @@
public int getErrorType() {
return errorType;
}
+
public String getErrorMsg() {
try {
- if (errorType == -1)
- return null;
+ if(errorType == -1) return null;
return TorControlCommands.ERROR_MSGS[errorType];
- } catch (ArrayIndexOutOfBoundsException ex) {
- return "Unrecongized error #"+errorType;
+ } catch(ArrayIndexOutOfBoundsException ex) {
+ return "Unrecongized error #" + errorType;
}
}
}
diff -Bbur jtorctl/net/freehaven/tor/control/TorControlSyntaxError.java jtorctl-briar/net/freehaven/tor/control/TorControlSyntaxError.java
--- jtorctl/net/freehaven/tor/control/TorControlSyntaxError.java 2013-04-24 16:46:08.000000000 +0100
+++ jtorctl-briar/net/freehaven/tor/control/TorControlSyntaxError.java 2013-05-16 19:56:30.000000000 +0100
@@ -2,12 +2,15 @@
// See LICENSE file for copying information
package net.freehaven.tor.control;
-/**
- * An exception raised when Tor behaves in an unexpected way.
- */
-public class TorControlSyntaxError extends RuntimeException {
- static final long serialVersionUID = 2;
+import java.io.IOException;
- public TorControlSyntaxError(String s) { super(s); }
+/** An exception raised when Tor behaves in an unexpected way. */
+public class TorControlSyntaxError extends IOException {
+
+ private static final long serialVersionUID = 2;
+
+ public TorControlSyntaxError(String s) {
+ super(s);
+ }
}
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