mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-02 23:31:08 +08:00
STeve (Xin) Huang
a9d02f6122
* convert db lib to use slog, part 1 * fix typo * fix build and add deprecate * fix lint
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package sqlserver
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import (
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"context"
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"log/slog"
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"net"
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"github.com/gravitational/trace"
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"github.com/gravitational/teleport/lib/auth"
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"github.com/gravitational/teleport/lib/srv/db/common"
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"github.com/gravitational/teleport/lib/srv/db/sqlserver/protocol"
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)
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// Proxy accepts connections from SQL Server clients, performs a Pre-Login
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// handshake and then forwards the connection to the database service agent.
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type Proxy struct {
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// Middleware is the auth middleware.
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Middleware *auth.Middleware
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// Service is used to connect to a remote database service.
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Service common.Service
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// Log is used for logging.
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Log *slog.Logger
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}
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// HandleConnection accepts connection from a SQL Server client, authenticates
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// it and proxies it to an appropriate database service.
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func (p *Proxy) HandleConnection(ctx context.Context, proxyCtx *common.ProxyContext, conn net.Conn) error {
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conn, err := p.handlePreLogin(ctx, conn)
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if err != nil {
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return trace.Wrap(err)
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}
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serviceConn, err := p.Service.Connect(ctx, proxyCtx, conn.RemoteAddr(), conn.LocalAddr())
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if err != nil {
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return trace.Wrap(err)
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}
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defer serviceConn.Close()
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err = p.Service.Proxy(ctx, proxyCtx, conn, serviceConn)
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if err != nil {
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return trace.Wrap(err)
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}
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return nil
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}
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func (p *Proxy) handlePreLogin(ctx context.Context, conn net.Conn) (net.Conn, error) {
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_, err := protocol.ReadPreLoginPacket(conn)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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err = protocol.WritePreLoginResponse(conn)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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// Pre-Login is done, Login7 is handled by the agent.
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return conn, nil
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}
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