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gitea/vendor/github.com/denisenkom/go-mssqldb/rpc.go

90 lines
1.8 KiB

package mssql
import (
"encoding/binary"
)
type procId struct {
id uint16
name string
}
// parameter flags
const (
fByRevValue = 1
fDefaultValue = 2
)
type param struct {
Name string
Flags uint8
ti typeInfo
buffer []byte
}
const (
fWithRecomp = 1
fNoMetaData = 2
fReuseMetaData = 4
)
var (
sp_Cursor = procId{1, ""}
sp_CursorOpen = procId{2, ""}
sp_CursorPrepare = procId{3, ""}
sp_CursorExecute = procId{4, ""}
sp_CursorPrepExec = procId{5, ""}
sp_CursorUnprepare = procId{6, ""}
sp_CursorFetch = procId{7, ""}
sp_CursorOption = procId{8, ""}
sp_CursorClose = procId{9, ""}
sp_ExecuteSql = procId{10, ""}
sp_Prepare = procId{11, ""}
sp_PrepExec = procId{13, ""}
sp_PrepExecRpc = procId{14, ""}
sp_Unprepare = procId{15, ""}
)
// http://msdn.microsoft.com/en-us/library/dd357576.aspx
func sendRpc(buf *tdsBuffer, headers []headerStruct, proc procId, flags uint16, params []param, resetSession bool) (err error) {
buf.BeginPacket(packRPCRequest, resetSession)
writeAllHeaders(buf, headers)
if len(proc.name) == 0 {
var idswitch uint16 = 0xffff
err = binary.Write(buf, binary.LittleEndian, &idswitch)
if err != nil {
return
}
err = binary.Write(buf, binary.LittleEndian, &proc.id)
if err != nil {
return
}
} else {
err = writeUsVarChar(buf, proc.name)
if err != nil {
return
}
}
err = binary.Write(buf, binary.LittleEndian, &flags)
if err != nil {
return
}
for _, param := range params {
if err = writeBVarChar(buf, param.Name); err != nil {
return
}
if err = binary.Write(buf, binary.LittleEndian, param.Flags); err != nil {
return
}
err = writeTypeInfo(buf, &param.ti)
if err != nil {
return
}
err = param.ti.Writer(buf, param.ti, param.buffer)
if err != nil {
return
}
}
return buf.FinishPacket()
}