mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-02 06:08:23 +08:00
Gabriel Corado
22dc3dfb2e
* refactor(sqlserver): change to microsoft fork * chore(gomod): update mssqldb dep * test(sqlserver): add server on parsing PLP RPC packets * fix(db): change mssql import * chore(gomod): update go-mssqldb reference * test(protocol): use fuzz arguments * chore: code review suggestions * test(sqlserver): add missing protocols attribute
62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
/*
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Copyright 2022 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package protocol
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import (
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"bytes"
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"encoding/binary"
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"io"
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"github.com/gravitational/trace"
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mssql "github.com/microsoft/go-mssqldb"
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)
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// SQLBatch is a representation of MSServer SQL Batch packet.
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// https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-tds/f2026cd3-9a46-4a3f-9a08-f63140bcbbe3
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type SQLBatch struct {
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Packet
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// SQLText contains text batch query.
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SQLText string
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}
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func toSQLBatch(p Packet) (*SQLBatch, error) {
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if p.Type() != PacketTypeSQLBatch {
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return nil, trace.BadParameter("expected SQLBatch packet, got: %v", p.Type())
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}
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r := bytes.NewReader(p.Data())
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var headersLength uint32
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// The packet header if present only in the first packet.
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if int(p.Header().PacketID) == 1 {
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if err := binary.Read(r, binary.LittleEndian, &headersLength); err != nil {
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return nil, trace.Wrap(err)
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}
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}
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if _, err := r.Seek(int64(headersLength), io.SeekStart); err != nil {
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return nil, trace.ConvertSystemError(err)
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}
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s, err := mssql.ParseUCS2String(p.Data()[r.Size()-int64(r.Len()):])
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if err != nil {
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return nil, trace.Wrap(err)
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}
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return &SQLBatch{
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Packet: p,
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SQLText: s,
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}, nil
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}
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