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);
}
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;
}
}
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 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=
"WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!\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,
(key_type.equals("DSA") ? "ssh-dss" : "ssh-rsa"),
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+". "+key_type+" key fingerprint is "+key_fprint);
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);
}
}
}