mirror of
https://github.com/Luzifer/cloudkeys-go.git
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Knut Ahlers
a1df72edc5
commitf0db1ff1f8
Author: Knut Ahlers <knut@ahlers.me> Date: Sun Dec 24 12:19:56 2017 +0100 Mark option as deprecated Signed-off-by: Knut Ahlers <knut@ahlers.me> commit9891df2a16
Author: Knut Ahlers <knut@ahlers.me> Date: Sun Dec 24 12:11:56 2017 +0100 Fix: Typo Signed-off-by: Knut Ahlers <knut@ahlers.me> commit836006de64
Author: Knut Ahlers <knut@ahlers.me> Date: Sun Dec 24 12:04:20 2017 +0100 Add new dependencies Signed-off-by: Knut Ahlers <knut@ahlers.me> commitd64fee60c8
Author: Knut Ahlers <knut@ahlers.me> Date: Sun Dec 24 11:55:52 2017 +0100 Replace insecure password hashing Prior this commit passwords were hashed with a static salt and using the SHA1 hashing function. This could lead to passwords being attackable in case someone gets access to the raw data stored inside the database. This commit introduces password hashing using bcrypt hashing function which addresses this issue. Old passwords are not automatically re-hashed as they are unknown. Replacing the old password scheme is not that easy and needs #10 to be solved. Therefore the old hashing scheme is kept for compatibility reason. Signed-off-by: Knut Ahlers <knut@ahlers.me> Signed-off-by: Knut Ahlers <knut@ahlers.me> closes #14 closes #15
143 lines
3.3 KiB
Go
143 lines
3.3 KiB
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ssh
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import (
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"fmt"
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"net"
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)
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// OpenChannelError is returned if the other side rejects an
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// OpenChannel request.
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type OpenChannelError struct {
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Reason RejectionReason
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Message string
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}
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func (e *OpenChannelError) Error() string {
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return fmt.Sprintf("ssh: rejected: %s (%s)", e.Reason, e.Message)
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}
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// ConnMetadata holds metadata for the connection.
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type ConnMetadata interface {
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// User returns the user ID for this connection.
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User() string
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// SessionID returns the session hash, also denoted by H.
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SessionID() []byte
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// ClientVersion returns the client's version string as hashed
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// into the session ID.
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ClientVersion() []byte
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// ServerVersion returns the server's version string as hashed
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// into the session ID.
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ServerVersion() []byte
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// RemoteAddr returns the remote address for this connection.
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RemoteAddr() net.Addr
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// LocalAddr returns the local address for this connection.
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LocalAddr() net.Addr
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}
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// Conn represents an SSH connection for both server and client roles.
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// Conn is the basis for implementing an application layer, such
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// as ClientConn, which implements the traditional shell access for
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// clients.
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type Conn interface {
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ConnMetadata
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// SendRequest sends a global request, and returns the
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// reply. If wantReply is true, it returns the response status
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// and payload. See also RFC4254, section 4.
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SendRequest(name string, wantReply bool, payload []byte) (bool, []byte, error)
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// OpenChannel tries to open an channel. If the request is
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// rejected, it returns *OpenChannelError. On success it returns
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// the SSH Channel and a Go channel for incoming, out-of-band
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// requests. The Go channel must be serviced, or the
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// connection will hang.
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OpenChannel(name string, data []byte) (Channel, <-chan *Request, error)
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// Close closes the underlying network connection
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Close() error
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// Wait blocks until the connection has shut down, and returns the
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// error causing the shutdown.
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Wait() error
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// TODO(hanwen): consider exposing:
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// RequestKeyChange
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// Disconnect
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}
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// DiscardRequests consumes and rejects all requests from the
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// passed-in channel.
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func DiscardRequests(in <-chan *Request) {
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for req := range in {
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if req.WantReply {
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req.Reply(false, nil)
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}
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}
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}
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// A connection represents an incoming connection.
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type connection struct {
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transport *handshakeTransport
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sshConn
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// The connection protocol.
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*mux
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}
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func (c *connection) Close() error {
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return c.sshConn.conn.Close()
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}
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// sshconn provides net.Conn metadata, but disallows direct reads and
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// writes.
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type sshConn struct {
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conn net.Conn
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user string
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sessionID []byte
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clientVersion []byte
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serverVersion []byte
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}
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func dup(src []byte) []byte {
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dst := make([]byte, len(src))
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copy(dst, src)
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return dst
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}
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func (c *sshConn) User() string {
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return c.user
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}
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func (c *sshConn) RemoteAddr() net.Addr {
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return c.conn.RemoteAddr()
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}
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func (c *sshConn) Close() error {
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return c.conn.Close()
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}
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func (c *sshConn) LocalAddr() net.Addr {
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return c.conn.LocalAddr()
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}
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func (c *sshConn) SessionID() []byte {
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return dup(c.sessionID)
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}
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func (c *sshConn) ClientVersion() []byte {
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return dup(c.clientVersion)
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}
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func (c *sshConn) ServerVersion() []byte {
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return dup(c.serverVersion)
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}
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