public override HostKey[] getHostKey(String host, String type)
{
lock (pool)
{
int count = 0;
for (int i = 0; i < pool.Count; i++)
{
HostKey hk = (HostKey)pool[i];
if (hk.type == HostKey.UNKNOWN)
{
continue;
}
if (host == null ||
(isIncluded(hk.host, host) &&
(type == null || hk.getType().Equals(type))))
{
count++;
}
}
if (count == 0)
{
return(null);
}
HostKey[] foo = new HostKey[count];
int j = 0;
for (int i = 0; i < pool.Count; i++)
{
HostKey hk = (HostKey)pool[i];
if (hk.type == HostKey.UNKNOWN)
{
continue;
}
if (host == null ||
(isIncluded(hk.host, host) &&
(type == null || hk.getType().Equals(type))))
{
foo[j++] = hk;
}
}
return(foo);
}
}
public override void remove(String host, String type, byte[] key)
{
bool _sync = false;
for (int i = 0; i < pool.Count; i++)
{
HostKey hk = (HostKey)(pool[i]);
if (host == null ||
(hk.getHost().Equals(host) &&
(type == null || (hk.getType().Equals(type) &&
(key == null || Util.array_equals(key, hk.key))))))
{
pool.Remove(hk);
_sync = true;
}
}
if (_sync)
{
try{ sync(); }
catch {};
}
}
internal void setKnownHosts(StreamReader foo)
{
pool.Clear();
System.Text.StringBuilder sb = new System.Text.StringBuilder();
byte i;
int j;
bool error = false;
try
{
StreamReader fis = foo;
String host;
String key = null;
int type;
byte[] buf = new byte[1024];
int bufl = 0;
loop:
while (true)
{
bufl = 0;
while (true)
{
j = fis.Read();
if (j == -1)
{
goto break_loop;
}
if (j == 0x0d)
{
continue;
}
if (j == 0x0a)
{
break;
}
buf[bufl++] = (byte)j;
}
j = 0;
while (j < bufl)
{
i = buf[j];
if (i == ' ' || i == '\t')
{
j++; continue;
}
if (i == '#')
{
addInvalidLine(System.Text.Encoding.Default.GetString(buf, 0, bufl));
goto loop;
}
break;
}
if (j >= bufl)
{
addInvalidLine(System.Text.Encoding.Default.GetString(buf, 0, bufl));
goto loop;
}
sb.Length = 0;
while (j < bufl)
{
i = buf[j++];
if (i == 0x20 || i == '\t')
{
break;
}
sb.Append((char)i);
}
host = sb.ToString();
if (j >= bufl || host.Length == 0)
{
addInvalidLine(System.Text.Encoding.Default.GetString(buf, 0, bufl));
goto loop;
}
sb.Length = 0;
type = -1;
while (j < bufl)
{
i = buf[j++];
if (i == 0x20 || i == '\t')
{
break;
}
sb.Append((char)i);
}
if (sb.ToString().Equals("ssh-dss"))
{
type = HostKey.SSHDSS;
}
else if (sb.ToString().Equals("ssh-rsa"))
{
type = HostKey.SSHRSA;
}
else
{
j = bufl;
}
if (j >= bufl)
{
addInvalidLine(Util.getString(buf, 0, bufl));
goto loop;
}
sb.Length = 0;
while (j < bufl)
{
i = buf[j++];
if (i == 0x0d)
{
continue;
}
if (i == 0x0a)
{
break;
}
sb.Append((char)i);
}
key = sb.ToString();
if (key.Length == 0)
{
addInvalidLine(Util.getString(buf, 0, bufl));
goto loop;
}
//System.out.println(host);
//System.out.println("|"+key+"|");
HostKey hk = new HostKey(host, type,
Util.fromBase64(Util.getBytes(key), 0,
key.Length));
pool.Add(hk);
}
break_loop:
fis.Close();
if (error)
{
throw new JSchException("KnownHosts: invalid format");
}
}
catch (Exception e)
{
if (e is JSchException)
{
throw (JSchException)e;
}
throw new JSchException(e.ToString());
}
}
private void addInvalidLine(String line)
{
HostKey hk = new HostKey(line, HostKey.UNKNOWN, null);
pool.Add(hk);
}
public override void add(String host, byte[] key, UserInfo userinfo)
{
HostKey hk;
int type = getType(key);
for (int i = 0; i < pool.Count; i++)
{
hk = (HostKey)(pool[i]);
if (isIncluded(hk.host, host) && hk.type == type)
{
/*
* if(Util.array_equals(hk.key, key)){ return; }
* if(hk.host.equals(host)){
* hk.key=key;
* return;
* }
* else{
* hk.host=deleteSubString(hk.host, host);
* break;
* }
*/
}
}
hk = new HostKey(host, type, key);
pool.Add(hk);
String bar = getKnownHostsRepositoryID();
if (userinfo != null &&
bar != null)
{
bool foo = true;
FileInfo goo = new FileInfo(bar);
if (!goo.Exists)
{
foo = false;
if (userinfo != null)
{
foo = userinfo.promptYesNo(
bar + " does not exist.\n" +
"Are you sure you want to create it?"
);
DirectoryInfo dir = goo.Directory;
if (foo && dir != null && !dir.Exists)
{
foo = userinfo.promptYesNo(
"The parent directory " + dir.Name + " does not exist.\n" +
"Are you sure you want to create it?"
);
if (foo)
{
try{ dir.Create(); userinfo.showMessage(dir.Name + " has been succesfully created.\nPlease check its access permission."); }
catch
{
userinfo.showMessage(dir.Name + " has not been created.");
foo = false;
}
}
}
if (goo == null)
{
foo = false;
}
}
}
if (foo)
{
try
{
sync(bar);
}
catch (Exception e) { Console.WriteLine("sync known_hosts: " + e); }
}
}
}
public override void add(String host, byte[] key, UserInfo userinfo)
{
HostKey hk;
int type=getType(key);
for(int i=0; i<pool.Count; i++)
{
hk=(HostKey)(pool[i]);
if(isIncluded(hk.host, host) && hk.type==type)
{
/*
if(Util.array_equals(hk.key, key)){ return; }
if(hk.host.equals(host)){
hk.key=key;
return;
}
else{
hk.host=deleteSubString(hk.host, host);
break;
}
*/
}
}
hk=new HostKey(host, type, key);
pool.Add(hk);
String bar=getKnownHostsRepositoryID();
if(userinfo!=null &&
bar!=null)
{
bool foo=true;
FileInfo goo=new FileInfo(bar);
if(!goo.Exists)
{
foo=false;
if(userinfo!=null)
{
foo=userinfo.promptYesNo(
bar+" does not exist.\n"+
"Are you sure you want to create it?"
);
DirectoryInfo dir =goo.Directory;
if(foo && dir!=null && !dir.Exists)
{
foo=userinfo.promptYesNo(
"The parent directory "+dir.Name+" does not exist.\n"+
"Are you sure you want to create it?"
);
if(foo)
{
try{dir.Create(); userinfo.showMessage(dir.Name+" has been succesfully created.\nPlease check its access permission.");}
catch
{
userinfo.showMessage(dir.Name+" has not been created.");
foo=false;
}
}
}
if(goo==null)foo=false;
}
}
if(foo)
{
try
{
sync(bar);
}
catch(Exception e){ Console.WriteLine("sync known_hosts: "+e); }
}
}
}
private void addInvalidLine(String line)
{
HostKey hk = new HostKey(line, HostKey.UNKNOWN, null);
pool.Add(hk);
}
internal void setKnownHosts(StreamReader foo)
{
pool.Clear();
System.Text.StringBuilder sb=new System.Text.StringBuilder();
byte i;
int j;
bool error=false;
try
{
StreamReader fis=foo;
String host;
String key=null;
int type;
byte[] buf=new byte[1024];
int bufl=0;
loop:
while(true)
{
bufl=0;
while(true)
{
j=fis.Read();
if(j==-1){ goto break_loop;}
if(j==0x0d){ continue; }
if(j==0x0a){ break; }
buf[bufl++]=(byte)j;
}
j=0;
while(j<bufl)
{
i=buf[j];
if(i==' '||i=='\t'){ j++; continue; }
if(i=='#')
{
addInvalidLine(System.Text.Encoding.Default.GetString(buf, 0, bufl));
goto loop;
}
break;
}
if(j>=bufl)
{
addInvalidLine(System.Text.Encoding.Default.GetString(buf, 0, bufl));
goto loop;
}
sb.Length = 0;
while(j<bufl)
{
i=buf[j++];
if(i==0x20 || i=='\t'){ break; }
sb.Append((char)i);
}
host=sb.ToString();
if(j>=bufl || host.Length==0)
{
addInvalidLine(System.Text.Encoding.Default.GetString(buf, 0, bufl));
goto loop;
}
sb.Length=0;
type=-1;
while(j<bufl)
{
i=buf[j++];
if(i==0x20 || i=='\t'){ break; }
sb.Append((char)i);
}
if(sb.ToString().Equals("ssh-dss")){ type=HostKey.SSHDSS; }
else if(sb.ToString().Equals("ssh-rsa")){ type=HostKey.SSHRSA; }
else { j=bufl; }
if(j>=bufl)
{
addInvalidLine(Util.getString(buf, 0, bufl));
goto loop;
}
sb.Length=0;
while(j<bufl)
{
i=buf[j++];
if(i==0x0d){ continue; }
if(i==0x0a){ break; }
sb.Append((char)i);
}
key=sb.ToString();
if(key.Length==0)
{
addInvalidLine(Util.getString(buf, 0, bufl));
goto loop;
}
//System.out.println(host);
//System.out.println("|"+key+"|");
HostKey hk = new HostKey(host, type,
Util.fromBase64(Util.getBytes(key), 0,
key.Length));
pool.Add(hk);
}
break_loop:
fis.Close();
if(error)
{
throw new JSchException("KnownHosts: invalid format");
}
}
catch(Exception e)
{
if(e is JSchException)
{
throw (JSchException)e;
}
throw new JSchException(e.ToString());
}
}
public override HostKey[] getHostKey(String host, String type)
{
lock(pool)
{
int count=0;
for(int i=0; i<pool.Count; i++)
{
HostKey hk=(HostKey)pool[i];
if(hk.type==HostKey.UNKNOWN) continue;
if(host==null ||
(isIncluded(hk.host, host) &&
(type==null || hk.getType().Equals(type))))
{
count++;
}
}
if(count==0)return null;
HostKey[] foo=new HostKey[count];
int j=0;
for(int i=0; i<pool.Count; i++)
{
HostKey hk=(HostKey)pool[i];
if(hk.type==HostKey.UNKNOWN) continue;
if(host==null ||
(isIncluded(hk.host, host) &&
(type==null || hk.getType().Equals(type))))
{
foo[j++]=hk;
}
}
return foo;
}
}
private void checkHost(String host, KeyExchange kex)
{
String shkc=getConfig("StrictHostKeyChecking");
//System.Console.WriteLine("shkc: "+shkc);
byte[] K_S=kex.getHostKey();
String key_type=kex.getKeyType();
String key_fprint=kex.getFingerPrint();
hostkey=new HostKey(host, K_S);
HostKeyRepository hkr=jsch.getHostKeyRepository();
int i=0;
lock(hkr)
{
i=hkr.check(host, K_S);
}
bool insert=false;
if((shkc.equals("ask") || shkc.equals("yes")) &&
i==HostKeyRepository.CHANGED)
{
String file=null;
lock(hkr)
{
file=hkr.getKnownHostsRepositoryID();
}
if(file==null){file="known_hosts";}
String message=
"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n"+
"@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @\n"+
"@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n"+
"IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! \n"+
"Someone could be eavesdropping on you right now (man-in-the-middle attack)!\n"+
"It is also possible that the "+key_type+" host key has just been changed.\n"+
"The fingerprint for the "+key_type+" key sent by the remote host is\n"+
key_fprint+".\n"+
"Please contact your system administrator.\n"+
"Add correct host key in "+file+" to get rid of this message.";
bool b=false;
if(userinfo!=null)
{
//userinfo.showMessage(message);
b=userinfo.promptYesNo(message+
"\nDo you want to delete the old key and insert the new key?");
}
//throw new JSchException("HostKey has been changed: "+host);
if(!b)
{
throw new JSchException("HostKey has been changed: "+host);
}
else
{
lock(hkr)
{
hkr.remove(host, null);
insert=true;
}
}
}
// bool insert=false;
if((shkc.equals("ask") || shkc.equals("yes")) &&
(i!=HostKeyRepository.OK) && !insert)
{
if(shkc.equals("yes"))
{
throw new JSchException("reject HostKey: "+host);
}
//System.Console.WriteLine("finger-print: "+key_fprint);
if(userinfo!=null)
{
bool foo=userinfo.promptYesNo(
"The authenticity of host '"+host+"' can't be established.\n"+
key_type+" key fingerprint is "+key_fprint+".\n"+
"Are you sure you want to continue connecting?"
);
if(!foo)
{
throw new JSchException("reject HostKey: "+host);
}
insert=true;
}
else
{
if(i==HostKeyRepository.NOT_INCLUDED)
throw new JSchException("UnknownHostKey: "+host);
else throw new JSchException("HostKey has been changed: "+host);
}
}
if(shkc.equals("no") &&
HostKeyRepository.NOT_INCLUDED==i)
{
insert=true;
}
if(insert)
{
lock(hkr)
{
hkr.add(host, K_S, userinfo);
}
}
}
