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This commit is contained in:
Shikhar Bhushan
2011-12-04 17:48:42 +00:00
parent 718ff503df
commit 137a7f5956
1 changed files with 302 additions and 284 deletions
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42
src/main/java/net/schmizz/sshj/transport/verification/OpenSSHKnownHosts.java
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@@ -15,7 +15,12 @@
*/ */
package net.schmizz.sshj.transport.verification; package net.schmizz.sshj.transport.verification;
import net.schmizz.sshj.common.*; import net.schmizz.sshj.common.Base64;
import net.schmizz.sshj.common.Buffer;
import net.schmizz.sshj.common.IOUtils;
import net.schmizz.sshj.common.KeyType;
import net.schmizz.sshj.common.SSHException;
import net.schmizz.sshj.common.SecurityUtils;
import net.schmizz.sshj.transport.mac.HMACSHA1; import net.schmizz.sshj.transport.mac.HMACSHA1;
import net.schmizz.sshj.transport.mac.MAC; import net.schmizz.sshj.transport.mac.MAC;
import org.slf4j.Logger; import org.slf4j.Logger;
@@ -48,7 +53,8 @@ public class OpenSSHKnownHosts
protected final File khFile; protected final File khFile;
protected final List<HostEntry> entries = new ArrayList<HostEntry>(); protected final List<HostEntry> entries = new ArrayList<HostEntry>();
public OpenSSHKnownHosts(File khFile) throws IOException { public OpenSSHKnownHosts(File khFile)
throws IOException {
this.khFile = khFile; this.khFile = khFile;
if (khFile.exists()) { if (khFile.exists()) {
final BufferedReader br = new BufferedReader(new FileReader(khFile)); final BufferedReader br = new BufferedReader(new FileReader(khFile));
@@ -159,7 +165,8 @@ public class OpenSSHKnownHosts
*/ */
public static class EntryFactory { public static class EntryFactory {
public static HostEntry parseEntry(String line) throws IOException { public static HostEntry parseEntry(String line)
throws IOException {
if (isComment(line)) { if (isComment(line)) {
return new CommentEntry(line); return new CommentEntry(line);
} }
@@ -203,7 +210,8 @@ public class OpenSSHKnownHosts
} }
} }
private static PublicKey getKey(String sKey) throws IOException { private static PublicKey getKey(String sKey)
throws IOException {
return new Buffer.PlainBuffer(Base64.decode(sKey)).readPublicKey(); return new Buffer.PlainBuffer(Base64.decode(sKey)).readPublicKey();
} }
@@ -237,8 +245,12 @@ public class OpenSSHKnownHosts
} }
public interface HostEntry { public interface HostEntry {
boolean appliesTo(KeyType type, String host) throws IOException; boolean appliesTo(KeyType type, String host)
boolean verify(PublicKey key) throws IOException; throws IOException;
boolean verify(PublicKey key)
throws IOException;
String getLine(); String getLine();
} }
@@ -278,7 +290,8 @@ public class OpenSSHKnownHosts
} }
@Override @Override
public boolean verify(PublicKey key) throws IOException { public boolean verify(PublicKey key)
throws IOException {
return key.equals(this.key) && marker != Marker.REVOKED; return key.equals(this.key) && marker != Marker.REVOKED;
} }
@@ -317,7 +330,8 @@ public class OpenSSHKnownHosts
} }
@Override @Override
public boolean appliesTo(KeyType type, String host) throws IOException { public boolean appliesTo(KeyType type, String host)
throws IOException {
return type == this.type && hostnames.contains(host); return type == this.type && hostnames.contains(host);
} }
} }
@@ -330,7 +344,8 @@ public class OpenSSHKnownHosts
private final String hashedHost; private final String hashedHost;
public HashedEntry(Marker marker, String hash, KeyType type, PublicKey key) throws SSHException { public HashedEntry(Marker marker, String hash, KeyType type, PublicKey key)
throws SSHException {
super(marker, type, key); super(marker, type, key);
this.hashedHost = hash; this.hashedHost = hash;
{ {
@@ -342,16 +357,19 @@ public class OpenSSHKnownHosts
} }
@Override @Override
public boolean appliesTo(KeyType type, String host) throws IOException { public boolean appliesTo(KeyType type, String host)
throws IOException {
return this.type == type && hashedHost.equals(hashHost(host)); return this.type == type && hashedHost.equals(hashHost(host));
} }
private String hashHost(String host) throws IOException { private String hashHost(String host)
throws IOException {
sha1.init(getSaltyBytes()); sha1.init(getSaltyBytes());
return "|1|" + salt + "|" + Base64.encodeBytes(sha1.doFinal(host.getBytes(IOUtils.UTF8))); return "|1|" + salt + "|" + Base64.encodeBytes(sha1.doFinal(host.getBytes(IOUtils.UTF8)));
} }
private byte[] getSaltyBytes() throws IOException { private byte[] getSaltyBytes()
throws IOException {
if (saltyBytes == null) { if (saltyBytes == null) {
saltyBytes = Base64.decode(salt); saltyBytes = Base64.decode(salt);
} }