diff options
Diffstat (limited to 'src/org/noreply/fancydress/type3/PathSpec.java')
-rw-r--r-- | src/org/noreply/fancydress/type3/PathSpec.java | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/org/noreply/fancydress/type3/PathSpec.java b/src/org/noreply/fancydress/type3/PathSpec.java new file mode 100644 index 0000000..cbc608f --- /dev/null +++ b/src/org/noreply/fancydress/type3/PathSpec.java @@ -0,0 +1,95 @@ +/* $Id$ */ +package org.noreply.fancydress.type3; + +import org.noreply.fancydress.crypto.*; +import org.noreply.fancydress.status.*; +import org.noreply.fancydress.directory.*; +import org.noreply.fancydress.misc.Util; +import org.noreply.fancydress.type3.routing.*; +import java.net.InetAddress; +import java.util.*; + + +public class PathSpec { + String pathSpec; + Path singlePath; + + private String[] tokenize(String path) throws Mix3Exception { + ArrayList nicks = new ArrayList(); + int indexFrom = 0; + int indexOf; + + while ((indexOf = path.indexOf(',', indexFrom)) != -1) { + String v = path.substring(indexFrom, indexOf).trim(); + if (v.equals("")) + throw new Mix3Exception("Invalid path."); + nicks.add( v ); + indexFrom = indexOf + 1; + } + String v = path.substring(indexFrom).trim(); + if (v.equals("")) + throw new Mix3Exception("Invalid path."); + nicks.add( v ); + + String[] result = new String[nicks.size()]; + for (int i=0; i<result.length; i++) + result[i] = (String) nicks.get(i); + + return result; + } + + private Hop[] parseHalfPath(Directory dir, String path) throws Mix3Exception { + String[] nicks = tokenize(path); + Hop[] hops = new Hop[nicks.length]; + + for (int i=0; i<hops.length; i++) { + Server server = dir.getServer(nicks[i]); + if (server == null) + throw new Mix3Exception("Invalid path: "+nicks[i]+" not found"); + ServerDescriptor desc = server.getDescriptor(); + IncomingMMTPSection incoming = desc.getIncomingMMTPSection(); + Routing routing; + + if (incoming.getHostname() != null) { /* FIXME */ + routing = new RoutingHOST(incoming.getHostname(), incoming.getPort(), server.getKeyID()); + } else { + routing = new RoutingIP4(incoming.getIP(), incoming.getPort(), server.getKeyID()); + } + hops[i] = new Hop(routing, desc.getPacketKey()); + } + return hops; + } + + + /** + * Create a path specification from a string. + * + * A path spec could look like "<code>Foo,Bar,?:Baz,*2,~1</code>". + * + * FIXME: right now we don't do any random foo. + * + * @param path given path + */ + public PathSpec(Directory dir, String pathSpec, boolean singleLeg) throws Mix3Exception { + this.pathSpec = pathSpec; + + int crossover = pathSpec.indexOf(':'); + if (crossover < 0) + throw new Mix3Exception("Path is not a valid path: no crossover point specified."); + + Hop[] leg1 = parseHalfPath(dir, pathSpec.substring(0, crossover)); + Hop[] leg2 = parseHalfPath(dir, pathSpec.substring(crossover+1)); + singlePath = new Path(leg1, leg2); + } + + /** + * Return a path constructed from this PathSpec + * + * @param dir a directory + * @return path + */ + public Path getPath() throws Mix3Exception { + return singlePath; + } +} + |