Jack Christensen
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package pgproto3
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import (
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"encoding/binary"
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"errors"
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"github.com/jackc/pgio"
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)
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// AuthenticationSASLContinue is a message sent from the backend containing a SASL challenge.
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type AuthenticationSASLContinue struct {
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Data []byte
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}
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// Backend identifies this message as sendable by the PostgreSQL backend.
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func (*AuthenticationSASLContinue) Backend() {}
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// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
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// type identifier and 4 byte message length.
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func (dst *AuthenticationSASLContinue) Decode(src []byte) error {
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if len(src) < 4 {
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return errors.New("authentication message too short")
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}
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authType := binary.BigEndian.Uint32(src)
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if authType != AuthTypeSASLContinue {
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return errors.New("bad auth type")
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}
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dst.Data = src[4:]
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return nil
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}
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// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
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func (src *AuthenticationSASLContinue) Encode(dst []byte) []byte {
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dst = append(dst, 'R')
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sp := len(dst)
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dst = pgio.AppendInt32(dst, -1)
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dst = pgio.AppendUint32(dst, AuthTypeSASLContinue)
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dst = pgio.AppendInt32(dst, int32(len(src.Data)))
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dst = append(dst, src.Data...)
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pgio.SetInt32(dst[sp:], int32(len(dst[sp:])))
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return dst
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}
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