public void request(Session session, Channel channel) throws Exception {
super.request(session, channel);
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
// byte SSH_MSG_CHANNEL_REQUEST(98)
// uint32 recipient channel
// string request type // "x11-req"
// boolean want reply // 0
// boolean single connection
// string x11 authentication protocol // "MIT-MAGIC-COOKIE-1".
// string x11 authentication cookie
// uint32 x11 screen number
packet.reset();
buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.getRecipient());
buf.putString(Util.str2byte("x11-req"));
buf.putByte((byte) (waitForReply() ? 1 : 0));
buf.putByte((byte) 0);
buf.putString(Util.str2byte("MIT-MAGIC-COOKIE-1"));
buf.putString(ChannelX11.getFakedCookie(session));
buf.putInt(0);
write(packet);
session.x11_forwarding = true;
}
void dump(Buffer buf) {
buf.putInt(flags);
if ((flags & SSH_FILEXFER_ATTR_SIZE) != 0) {
buf.putLong(size);
}
if ((flags & SSH_FILEXFER_ATTR_UIDGID) != 0) {
buf.putInt(uid);
buf.putInt(gid);
}
if ((flags & SSH_FILEXFER_ATTR_PERMISSIONS) != 0) {
buf.putInt(permissions);
}
if ((flags & SSH_FILEXFER_ATTR_ACMODTIME) != 0) {
buf.putInt(atime);
}
if ((flags & SSH_FILEXFER_ATTR_ACMODTIME) != 0) {
buf.putInt(mtime);
}
if ((flags & SSH_FILEXFER_ATTR_EXTENDED) != 0) {
int count = extended.length / 2;
if (count > 0) {
for (int i = 0; i < count; i++) {
buf.putString(Util.str2byte(extended[i * 2]));
buf.putString(Util.str2byte(extended[i * 2 + 1]));
}
}
}
}
public void request(Session session, Channel channel) throws Exception {
super.request(session, channel);
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.getRecipient());
buf.putString(Util.str2byte("subsystem"));
buf.putByte((byte) (waitForReply() ? 1 : 0));
buf.putString(Util.str2byte("sftp"));
write(packet);
}
public void request(Session session, Channel channel) throws Exception {
super.request(session, channel);
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
// send
// byte SSH_MSG_CHANNEL_REQUEST(98)
// uint32 recipient channel
// string request type // "shell"
// boolean want reply // 0
packet.reset();
buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.getRecipient());
buf.putString(Util.str2byte("shell"));
buf.putByte((byte) (waitForReply() ? 1 : 0));
write(packet);
}
public void request(Session session, Channel channel) throws Exception {
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
// byte SSH_MSG_CHANNEL_REQUEST
// uint32 recipient_channel
// string "window-change"
// boolean FALSE
// uint32 terminal width, columns
// uint32 terminal height, rows
// uint32 terminal width, pixels
// uint32 terminal height, pixels
packet.reset();
buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.getRecipient());
buf.putString("window-change".getBytes());
buf.putByte((byte) (waitForReply() ? 1 : 0));
buf.putInt(width_columns);
buf.putInt(height_rows);
buf.putInt(width_pixels);
buf.putInt(height_pixels);
session.write(packet);
}
public boolean next(Buffer _buf) throws Exception {
int i, j;
switch (state) {
case SSH_MSG_KEX_DH_GEX_GROUP:
// byte SSH_MSG_KEX_DH_GEX_GROUP(31)
// mpint p, safe prime
// mpint g, generator for subgroup in GF (p)
_buf.getInt();
_buf.getByte();
j = _buf.getByte();
if (j != SSH_MSG_KEX_DH_GEX_GROUP) {
System.err.println("type: must be SSH_MSG_KEX_DH_GEX_GROUP " + j);
return false;
}
p = _buf.getMPInt();
g = _buf.getMPInt();
dh.setP(p);
dh.setG(g);
// The client responds with:
// byte SSH_MSG_KEX_DH_GEX_INIT(32)
// mpint e <- g^x mod p
// x is a random number (1 < x < (p-1)/2)
e = dh.getE();
packet.reset();
buf.putByte((byte) SSH_MSG_KEX_DH_GEX_INIT);
buf.putMPInt(e);
session.write(packet);
if (JSch.getLogger().isEnabled(Logger.INFO)) {
JSch.getLogger().log(Logger.INFO, "SSH_MSG_KEX_DH_GEX_INIT sent");
JSch.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEX_DH_GEX_REPLY");
}
state = SSH_MSG_KEX_DH_GEX_REPLY;
return true;
// break;
case SSH_MSG_KEX_DH_GEX_REPLY:
// The server responds with:
// byte SSH_MSG_KEX_DH_GEX_REPLY(33)
// string server public host key and certificates (K_S)
// mpint f
// string signature of H
j = _buf.getInt();
j = _buf.getByte();
j = _buf.getByte();
if (j != SSH_MSG_KEX_DH_GEX_REPLY) {
System.err.println("type: must be SSH_MSG_KEX_DH_GEX_REPLY " + j);
return false;
}
K_S = _buf.getString();
byte[] f = _buf.getMPInt();
byte[] sig_of_H = _buf.getString();
dh.setF(f);
dh.checkRange();
K = normalize(dh.getK());
// The hash H is computed as the HASH hash of the concatenation of the
// following:
// string V_C, the client's version string (CR and NL excluded)
// string V_S, the server's version string (CR and NL excluded)
// string I_C, the payload of the client's SSH_MSG_KEXINIT
// string I_S, the payload of the server's SSH_MSG_KEXINIT
// string K_S, the host key
// uint32 min, minimal size in bits of an acceptable group
// uint32 n, preferred size in bits of the group the server should send
// uint32 max, maximal size in bits of an acceptable group
// mpint p, safe prime
// mpint g, generator for subgroup
// mpint e, exchange value sent by the client
// mpint f, exchange value sent by the server
// mpint K, the shared secret
// This value is called the exchange hash, and it is used to authenti-
// cate the key exchange.
buf.reset();
buf.putString(V_C);
buf.putString(V_S);
buf.putString(I_C);
buf.putString(I_S);
buf.putString(K_S);
buf.putInt(min);
buf.putInt(preferred);
buf.putInt(max);
buf.putMPInt(p);
buf.putMPInt(g);
buf.putMPInt(e);
buf.putMPInt(f);
buf.putMPInt(K);
byte[] foo = new byte[buf.getLength()];
buf.getByte(foo);
sha.update(foo, 0, foo.length);
H = sha.digest();
// System.err.print("H -> "); dump(H, 0, H.length);
i = 0;
j = 0;
j =
((K_S[i++] << 24) & 0xff000000)
| ((K_S[i++] << 16) & 0x00ff0000)
| ((K_S[i++] << 8) & 0x0000ff00)
| ((K_S[i++]) & 0x000000ff);
String alg = Util.byte2str(K_S, i, j);
i += j;
boolean result = verify(alg, K_S, i, sig_of_H);
state = STATE_END;
return result;
}
return false;
}