mirror of
https://github.com/wavetermdev/waveterm.git
synced 2024-12-22 16:48:23 +01:00
119 lines
3.1 KiB
Go
119 lines
3.1 KiB
Go
package shexec
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import (
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"fmt"
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"io"
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"os/exec"
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"time"
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"github.com/scripthaus-dev/mshell/pkg/base"
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"github.com/scripthaus-dev/mshell/pkg/packet"
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)
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// TODO - track buffer sizes for sending input
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type ClientProc struct {
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Cmd *exec.Cmd
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InitPk *packet.InitPacketType
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StartTs time.Time
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StdinWriter io.WriteCloser
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StdoutReader io.ReadCloser
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StderrReader io.ReadCloser
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Input *packet.PacketSender
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Output *packet.PacketParser
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}
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// returns (clientproc, uname, error)
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func MakeClientProc(ecmd *exec.Cmd) (*ClientProc, string, error) {
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inputWriter, err := ecmd.StdinPipe()
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if err != nil {
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return nil, "", fmt.Errorf("creating stdin pipe: %v", err)
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}
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stdoutReader, err := ecmd.StdoutPipe()
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if err != nil {
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return nil, "", fmt.Errorf("creating stdout pipe: %v", err)
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}
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stderrReader, err := ecmd.StderrPipe()
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if err != nil {
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return nil, "", fmt.Errorf("creating stderr pipe: %v", err)
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}
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startTs := time.Now()
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err = ecmd.Start()
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if err != nil {
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return nil, "", fmt.Errorf("running local client: %w", err)
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}
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sender := packet.MakePacketSender(inputWriter)
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stdoutPacketParser := packet.MakePacketParser(stdoutReader)
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stderrPacketParser := packet.MakePacketParser(stderrReader)
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packetParser := packet.CombinePacketParsers(stdoutPacketParser, stderrPacketParser)
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cproc := &ClientProc{
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Cmd: ecmd,
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StartTs: startTs,
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StdinWriter: inputWriter,
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StdoutReader: stdoutReader,
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StderrReader: stderrReader,
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Input: sender,
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Output: packetParser,
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}
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for pk := range packetParser.MainCh {
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if pk.GetType() != packet.InitPacketStr {
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cproc.Close()
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return nil, "", fmt.Errorf("invalid packet received from mshell client: %s", packet.AsString(pk))
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}
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initPk := pk.(*packet.InitPacketType)
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if initPk.NotFound {
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cproc.Close()
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return nil, initPk.UName, fmt.Errorf("mshell command not found on local server")
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}
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if initPk.Version != base.MShellVersion {
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cproc.Close()
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return nil, initPk.UName, fmt.Errorf("invalid remote mshell version 'v%s', must be v%s", initPk.Version, base.MShellVersion)
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}
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cproc.InitPk = initPk
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break
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}
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if cproc.InitPk == nil {
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cproc.Close()
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return nil, "", fmt.Errorf("no init packet received from mshell client")
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}
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return cproc, cproc.InitPk.UName, nil
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}
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func (cproc *ClientProc) Close() {
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if cproc.Input != nil {
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cproc.Input.Close()
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}
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if cproc.StdinWriter != nil {
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cproc.StdinWriter.Close()
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}
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if cproc.StdoutReader != nil {
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cproc.StdoutReader.Close()
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}
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if cproc.StderrReader != nil {
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cproc.StderrReader.Close()
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}
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if cproc.Cmd != nil {
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cproc.Cmd.Process.Kill()
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}
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}
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func (cproc *ClientProc) ProxySingleOutput(ck base.CommandKey, sender *packet.PacketSender) {
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sentDonePk := false
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for pk := range cproc.Output.MainCh {
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if pk.GetType() == packet.CmdDonePacketStr {
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sentDonePk = true
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}
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sender.SendPacket(pk)
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}
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exitErr := cproc.Cmd.Wait()
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if !sentDonePk {
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endTs := time.Now()
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cmdDuration := endTs.Sub(cproc.StartTs)
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donePacket := packet.MakeCmdDonePacket(ck)
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donePacket.Ts = endTs.UnixMilli()
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donePacket.ExitCode = GetExitCode(exitErr)
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donePacket.DurationMs = int64(cmdDuration / time.Millisecond)
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sender.SendPacket(donePacket)
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}
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}
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