87 lines
1.9 KiB
Go
87 lines
1.9 KiB
Go
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
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package tui
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import (
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"errors"
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"fmt"
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"kitty/tools/utils"
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"os"
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"os/exec"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/shirou/gopsutil/v3/process"
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"golang.org/x/sys/unix"
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)
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var _ = fmt.Print
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func tmux_socket_address() (socket string) {
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socket = os.Getenv("TMUX")
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if socket == "" {
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return ""
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}
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addr, pid_str, found := strings.Cut(socket, ",")
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if !found {
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return ""
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}
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if unix.Access(addr, unix.R_OK|unix.W_OK) != nil {
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return ""
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}
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pid_str, _, _ = strings.Cut(pid_str, ",")
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pid, err := strconv.ParseInt(pid_str, 10, 32)
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if err != nil {
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return ""
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}
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p, err := process.NewProcess(int32(pid))
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if err != nil {
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return ""
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}
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cmd, err := p.CmdlineSlice()
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if err != nil {
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return ""
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}
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if len(cmd) > 0 && strings.ToLower(filepath.Base(cmd[0])) != "tmux" {
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return ""
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}
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return socket
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}
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var TmuxSocketAddress = (&utils.Once[string]{Run: tmux_socket_address}).Get
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func tmux_allow_passthrough() error {
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c := exec.Command("tmux", "show", "-Ap", "allow-passthrough")
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allowed, not_allowed := errors.New("allowed"), errors.New("not allowed")
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get_result := make(chan error)
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go func() {
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output, err := c.Output()
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if err != nil {
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get_result <- err
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} else {
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q := strings.TrimSpace(utils.UnsafeBytesToString(output))
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if strings.HasSuffix(q, " on") || strings.HasSuffix(q, " all") {
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get_result <- allowed
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} else {
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get_result <- not_allowed
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}
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}
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}()
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select {
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case r := <-get_result:
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if r == allowed {
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return nil
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}
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if r != not_allowed {
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return r
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}
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return exec.Command("tmux", "set", "-p", "allow-passthrough", "on").Run()
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case <-time.After(2 * time.Second):
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return fmt.Errorf("Tmux command timed out. This often happens when the version of tmux on your PATH is older than the version of the running tmux server")
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}
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}
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var TmuxAllowPassthrough = (&utils.Once[error]{Run: tmux_allow_passthrough}).Get
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