66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
package commander
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import (
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"bytes"
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"errors"
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"io"
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"os/exec"
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"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto"
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"golang.org/x/sync/errgroup"
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)
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type Commander struct {
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}
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func (*Commander) Execute(command *proto.Command) (*proto.FinishedCommand, error) {
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cmd := exec.Command(command.Command[0], command.Command[1:]...)
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var (
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stdin io.WriteCloser
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err error
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)
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if command.Stdin != nil {
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stdin, err = cmd.StdinPipe()
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if err != nil {
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return nil, err
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}
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}
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stdout, err1 := cmd.StdoutPipe()
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stderr, err2 := cmd.StderrPipe()
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if err := errors.Join(err1, err2); err != nil {
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return nil, err
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}
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if err := cmd.Start(); err != nil {
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return nil, err
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}
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if command.Stdin != nil {
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io.WriteString(stdin, *command.Stdin)
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if err := stdin.Close(); err != nil {
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return nil, err
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}
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}
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eg := new(errgroup.Group)
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stdoutbuf := new(bytes.Buffer)
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stderrbuf := new(bytes.Buffer)
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eg.Go(func() error {
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_, err := io.Copy(stdoutbuf, stdout)
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return err
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})
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eg.Go(func() error {
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_, err := io.Copy(stderrbuf, stderr)
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return err
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})
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if err := cmd.Wait(); err != nil {
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return nil, err
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}
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if err := eg.Wait(); err != nil {
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return nil, err
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}
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return &proto.FinishedCommand{
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Id: command.Id,
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Status: int32(cmd.ProcessState.ExitCode()),
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Stdout: stdoutbuf.String(),
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Stderr: stderrbuf.String(),
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}, nil
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}
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