I2P_Developers/i2p.android.base
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add reverse lookup by hash

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zzz
2009-02-25 02:00:13 +00:00
parent d222c7a998
commit 56473c6b65
2 changed files with 34 additions and 0 deletions
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32
core/java/src/net/i2p/client/naming/HostsTxtNamingService.java
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@ -16,8 +16,10 @@ import java.util.Set;
import java.util.StringTokenizer;
import net.i2p.I2PAppContext;
import net.i2p.data.DataFormatException;
import net.i2p.data.DataHelper;
import net.i2p.data.Destination;
import net.i2p.data.Hash;
import net.i2p.util.Log;
/**
@ -135,4 +137,34 @@ public class HostsTxtNamingService extends NamingService {
}
return null;
}
@Override
public String reverseLookup(Hash h) {
List filenames = getFilenames();
for (int i = 0; i < filenames.size(); i++) {
String hostsfile = (String)filenames.get(i);
Properties hosts = new Properties();
try {
File f = new File(hostsfile);
if ( (f.exists()) && (f.canRead()) ) {
DataHelper.loadProps(hosts, f, true);
Set keyset = hosts.keySet();
Iterator iter = keyset.iterator();
while (iter.hasNext()) {
String host = (String)iter.next();
String key = hosts.getProperty(host);
try {
Destination destkey = new Destination();
destkey.fromBase64(key);
if (h.equals(destkey.calculateHash()))
return host;
} catch (DataFormatException dfe) {}
}
}
} catch (Exception ioe) {
_log.error("Error loading hosts file " + hostsfile, ioe);
}
}
return null;
}
}

2
core/java/src/net/i2p/client/naming/NamingService.java
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@ -16,6 +16,7 @@ import java.util.Map;
import net.i2p.I2PAppContext;
import net.i2p.data.DataFormatException;
import net.i2p.data.Destination;
import net.i2p.data.Hash;
import net.i2p.util.Log;
/**
@ -61,6 +62,7 @@ public abstract class NamingService {
* <code>null</code> if no reverse lookup is possible.
*/
public abstract String reverseLookup(Destination dest);
public String reverseLookup(Hash h) { return null; };
/**
* Check if host name is valid Base64 encoded dest and return this