2017-02-12 11:13:54 +00:00
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package server
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import (
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"fmt"
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. "github.com/siddontang/go-mysql/mysql"
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)
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func (c *Conn) writeOK(r *Result) error {
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if r == nil {
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r = &Result{}
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}
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r.Status |= c.status
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data := make([]byte, 4, 32)
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data = append(data, OK_HEADER)
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data = append(data, PutLengthEncodedInt(r.AffectedRows)...)
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data = append(data, PutLengthEncodedInt(r.InsertId)...)
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if c.capability&CLIENT_PROTOCOL_41 > 0 {
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data = append(data, byte(r.Status), byte(r.Status>>8))
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data = append(data, 0, 0)
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}
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return c.WritePacket(data)
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}
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func (c *Conn) writeError(e error) error {
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var m *MyError
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var ok bool
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if m, ok = e.(*MyError); !ok {
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m = NewError(ER_UNKNOWN_ERROR, e.Error())
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}
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data := make([]byte, 4, 16+len(m.Message))
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data = append(data, ERR_HEADER)
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data = append(data, byte(m.Code), byte(m.Code>>8))
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if c.capability&CLIENT_PROTOCOL_41 > 0 {
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data = append(data, '#')
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data = append(data, m.State...)
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}
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data = append(data, m.Message...)
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return c.WritePacket(data)
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}
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func (c *Conn) writeEOF() error {
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data := make([]byte, 4, 9)
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data = append(data, EOF_HEADER)
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if c.capability&CLIENT_PROTOCOL_41 > 0 {
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data = append(data, 0, 0)
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data = append(data, byte(c.status), byte(c.status>>8))
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}
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return c.WritePacket(data)
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}
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2019-01-01 08:57:46 +00:00
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// see: https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_connection_phase_packets_protocol_auth_switch_request.html
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func (c *Conn) writeAuthSwitchRequest(newAuthPluginName string) error {
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data := make([]byte, 4)
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data = append(data, EOF_HEADER)
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data = append(data, []byte(newAuthPluginName)...)
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data = append(data, 0x00)
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rnd, err := RandomBuf(20)
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if err != nil {
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return err
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}
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// new auth data
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c.salt = rnd
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data = append(data, c.salt...)
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// the online doc states it's a string.EOF, however, the actual MySQL server add a \NUL to the end, without it, the
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// official MySQL client will fail.
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data = append(data, 0x00)
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return c.WritePacket(data)
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}
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// see: https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_connection_phase_packets_protocol_auth_switch_response.html
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func (c *Conn) readAuthSwitchRequestResponse() ([]byte, error) {
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data, err := c.ReadPacket()
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if err != nil {
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return nil, err
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}
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if len(data) == 1 && data[0] == 0x00 {
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// \NUL
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return make([]byte, 0), nil
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}
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return data, nil
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}
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func (c *Conn) writeAuthMoreDataPubkey() error {
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data := make([]byte, 4)
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data = append(data, MORE_DATE_HEADER)
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data = append(data, c.serverConf.pubKey...)
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return c.WritePacket(data)
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}
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func (c *Conn) writeAuthMoreDataFullAuth() error {
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data := make([]byte, 4)
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data = append(data, MORE_DATE_HEADER)
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data = append(data, CACHE_SHA2_FULL_AUTH)
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return c.WritePacket(data)
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}
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func (c *Conn) writeAuthMoreDataFastAuth() error {
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data := make([]byte, 4)
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data = append(data, MORE_DATE_HEADER)
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data = append(data, CACHE_SHA2_FAST_AUTH)
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return c.WritePacket(data)
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}
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2017-02-12 11:13:54 +00:00
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func (c *Conn) writeResultset(r *Resultset) error {
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columnLen := PutLengthEncodedInt(uint64(len(r.Fields)))
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data := make([]byte, 4, 1024)
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data = append(data, columnLen...)
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if err := c.WritePacket(data); err != nil {
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return err
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}
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for _, v := range r.Fields {
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data = data[0:4]
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data = append(data, v.Dump()...)
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if err := c.WritePacket(data); err != nil {
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return err
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}
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}
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if err := c.writeEOF(); err != nil {
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return err
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}
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for _, v := range r.RowDatas {
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data = data[0:4]
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data = append(data, v...)
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if err := c.WritePacket(data); err != nil {
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return err
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}
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}
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if err := c.writeEOF(); err != nil {
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return err
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}
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return nil
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}
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func (c *Conn) writeFieldList(fs []*Field) error {
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data := make([]byte, 4, 1024)
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for _, v := range fs {
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data = data[0:4]
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data = append(data, v.Dump()...)
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if err := c.WritePacket(data); err != nil {
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return err
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}
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}
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if err := c.writeEOF(); err != nil {
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return err
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}
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return nil
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}
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type noResponse struct{}
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func (c *Conn) writeValue(value interface{}) error {
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switch v := value.(type) {
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case noResponse:
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return nil
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case error:
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return c.writeError(v)
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case nil:
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return c.writeOK(nil)
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case *Result:
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if v != nil && v.Resultset != nil {
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return c.writeResultset(v.Resultset)
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} else {
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return c.writeOK(v)
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}
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case []*Field:
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return c.writeFieldList(v)
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case *Stmt:
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return c.writePrepare(v)
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default:
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return fmt.Errorf("invalid response type %T", value)
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}
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}
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