Examples with TypesReader com.trilead.ssh2.packets.TypesReader used on opensource projects

Example 1 with TypesReader

use of com.trilead.ssh2.packets.TypesReader in project intellij-community by JetBrains.

the class DSASHA1Verify method decodeSSHDSAPublicKey.

public static DSAPublicKey decodeSSHDSAPublicKey(byte[] key) throws IOException {
    TypesReader tr = new TypesReader(key);
    String key_format = tr.readString();
    if (key_format.equals("ssh-dss") == false)
        throw new IllegalArgumentException("This is not a ssh-dss public key!");
    BigInteger p = tr.readMPINT();
    BigInteger q = tr.readMPINT();
    BigInteger g = tr.readMPINT();
    BigInteger y = tr.readMPINT();
    if (tr.remain() != 0)
        throw new IOException("Padding in DSA public key!");
    return new DSAPublicKey(p, q, g, y);
}

Example 2 with TypesReader

use of com.trilead.ssh2.packets.TypesReader in project intellij-community by JetBrains.

the class RSASHA1Verify method decodeSSHRSASignature.

public static RSASignature decodeSSHRSASignature(byte[] sig) throws IOException {
    TypesReader tr = new TypesReader(sig);
    String sig_format = tr.readString();
    if (sig_format.equals("ssh-rsa") == false)
        throw new IOException("Peer sent wrong signature format");
    /* S is NOT an MPINT. "The value for 'rsa_signature_blob' is encoded as a string
		 * containing s (which is an integer, without lengths or padding, unsigned and in
		 * network byte order)." See also below.
		 */
    byte[] s = tr.readByteString();
    if (s.length == 0)
        throw new IOException("Error in RSA signature, S is empty.");
    if (log.isEnabled()) {
        log.log(80, "Decoding ssh-rsa signature string (length: " + s.length + ")");
    }
    if (tr.remain() != 0)
        throw new IOException("Padding in RSA signature!");
    return new RSASignature(new BigInteger(1, s));
}

Example 3 with TypesReader

use of com.trilead.ssh2.packets.TypesReader in project intellij-community by JetBrains.

the class SFTPv3Client method canonicalPath.

/**
	 * Have the server canonicalize any given path name to an absolute path.
	 * This is useful for converting path names containing ".." components or
	 * relative pathnames without a leading slash into absolute paths.
	 * 
	 * @param path See the {@link SFTPv3Client comment} for the class for more details.
	 * @return An absolute path.
	 * @throws IOException
	 */
public String canonicalPath(String path) throws IOException {
    int req_id = generateNextRequestID();
    TypesWriter tw = new TypesWriter();
    tw.writeString(path, charsetName);
    if (debug != null) {
        debug.println("Sending SSH_FXP_REALPATH...");
        debug.flush();
    }
    sendMessage(Packet.SSH_FXP_REALPATH, req_id, tw.getBytes());
    byte[] resp = receiveMessage(34000);
    if (debug != null) {
        debug.println("Got REPLY.");
        debug.flush();
    }
    TypesReader tr = new TypesReader(resp);
    int t = tr.readByte();
    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
        throw new IOException("The server sent an invalid id field.");
    if (t == Packet.SSH_FXP_NAME) {
        int count = tr.readUINT32();
        if (count != 1)
            throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");
        return tr.readString(charsetName);
    }
    if (t != Packet.SSH_FXP_STATUS)
        throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
    int errorCode = tr.readUINT32();
    throw new SFTPException(tr.readString(), errorCode);
}

Example 4 with TypesReader

use of com.trilead.ssh2.packets.TypesReader in project intellij-community by JetBrains.

the class SFTPv3Client method openDirectory.

private final byte[] openDirectory(String path) throws IOException {
    int req_id = generateNextRequestID();
    TypesWriter tw = new TypesWriter();
    tw.writeString(path, charsetName);
    if (debug != null) {
        debug.println("Sending SSH_FXP_OPENDIR...");
        debug.flush();
    }
    sendMessage(Packet.SSH_FXP_OPENDIR, req_id, tw.getBytes());
    byte[] resp = receiveMessage(34000);
    TypesReader tr = new TypesReader(resp);
    int t = tr.readByte();
    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
        throw new IOException("The server sent an invalid id field.");
    if (t == Packet.SSH_FXP_HANDLE) {
        if (debug != null) {
            debug.println("Got SSH_FXP_HANDLE.");
            debug.flush();
        }
        byte[] handle = tr.readByteString();
        return handle;
    }
    if (t != Packet.SSH_FXP_STATUS)
        throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
    int errorCode = tr.readUINT32();
    String errorMessage = tr.readString();
    throw new SFTPException(errorMessage, errorCode);
}

Example 5 with TypesReader

use of com.trilead.ssh2.packets.TypesReader in project intellij-community by JetBrains.

the class SFTPv3Client method read.

/**
	 * Read bytes from a file. No more than 32768 bytes may be read at once.
	 * Be aware that the semantics of read() are different than for Java streams.
	 * <p>
	 * <ul>
	 * <li>The server will read as many bytes as it can from the file (up to <code>len</code>),
	 * and return them.</li>
	 * <li>If EOF is encountered before reading any data, <code>-1</code> is returned.
	 * <li>If an error occurs, an exception is thrown</li>.
	 * <li>For normal disk files, it is guaranteed that the server will return the specified
	 * number of bytes, or up to end of file. For, e.g., device files this may return
	 * fewer bytes than requested.</li>
	 * </ul>
	 * 
	 * @param handle a SFTPv3FileHandle handle
	 * @param fileOffset offset (in bytes) in the file
	 * @param dst the destination byte array
	 * @param dstoff offset in the destination byte array
	 * @param len how many bytes to read, 0 &lt; len &lt;= 32768 bytes
	 * @return the number of bytes that could be read, may be less than requested if
	 *         the end of the file is reached, -1 is returned in case of <code>EOF</code>
	 * @throws IOException
	 */
public int read(SFTPv3FileHandle handle, long fileOffset, byte[] dst, int dstoff, int len) throws IOException {
    checkHandleValidAndOpen(handle);
    if ((len > 32768) || (len <= 0))
        throw new IllegalArgumentException("invalid len argument");
    int req_id = generateNextRequestID();
    TypesWriter tw = new TypesWriter();
    tw.writeString(handle.fileHandle, 0, handle.fileHandle.length);
    tw.writeUINT64(fileOffset);
    tw.writeUINT32(len);
    if (debug != null) {
        debug.println("Sending SSH_FXP_READ...");
        debug.flush();
    }
    sendMessage(Packet.SSH_FXP_READ, req_id, tw.getBytes());
    byte[] resp = receiveMessage(34000);
    TypesReader tr = new TypesReader(resp);
    int t = tr.readByte();
    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
        throw new IOException("The server sent an invalid id field.");
    if (t == Packet.SSH_FXP_DATA) {
        if (debug != null) {
            debug.println("Got SSH_FXP_DATA...");
            debug.flush();
        }
        int readLen = tr.readUINT32();
        if ((readLen < 0) || (readLen > len))
            throw new IOException("The server sent an invalid length field.");
        tr.readBytes(dst, dstoff, readLen);
        return readLen;
    }
    if (t != Packet.SSH_FXP_STATUS)
        throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");
    int errorCode = tr.readUINT32();
    if (errorCode == ErrorCodes.SSH_FX_EOF) {
        if (debug != null) {
            debug.println("Got SSH_FX_EOF.");
            debug.flush();
        }
        return -1;
    }
    String errorMessage = tr.readString();
    throw new SFTPException(errorMessage, errorCode);
}