goldwarden/agent/systemauth/pinentry/keybase-pinentry/pinentry_nix.go
2024-02-03 22:55:49 +01:00

112 lines
2.4 KiB
Go

// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
//go:build darwin || dragonfly || freebsd || linux || nacl || netbsd || openbsd || solaris
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
package pinentry
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"github.com/keybase/client/go/logger"
)
//
// some borrowed from here:
//
// https://github.com/bradfitz/camlistore/blob/master/pkg/misc/pinentry/pinentry.go
//
// Under the Apache 2.0 license
//
func canExec(s string) error {
fi, err := os.Stat(s)
if err != nil {
return err
}
mode := fi.Mode()
//
// Only consider non-directories that have at least one +x
// bit set.
//
// TODO: Recheck this on windows!
// See here for lookpath: http://golang.org/src/pkg/os/exec/lp_windows.go
//
// Similar to check from exec.LookPath below
// See here: http://golang.org/src/pkg/os/exec/lp_unix.go
//
if mode.IsDir() {
return fmt.Errorf("Program '%s' is a directory", s)
} else if int(mode)&0111 == 0 {
return fmt.Errorf("Program '%s' isn't executable", s)
} else {
return nil
}
}
func FindPinentry(log logger.Logger) (string, error) {
if !HasWindows() {
return "", fmt.Errorf("Can't spawn gui window, not using pinentry")
}
bins := []string{
// If you install MacTools you'll wind up with this pinentry
"/usr/local/MacGPG2/libexec/pinentry-mac.app/Contents/MacOS/pinentry-mac",
}
extraPaths := []string{}
log.Debug("+ FindPinentry()")
cmds := []string{
"pinentry-gtk-2",
"pinentry-qt4",
"pinentry",
}
checkFull := func(s string) bool {
log.Debug("| Check fullpath %s", s)
found := (canExec(s) == nil)
if found {
log.Debug("- Found: %s", s)
}
return found
}
for _, b := range bins {
if checkFull(b) {
return b, nil
}
}
path := os.Getenv("PATH")
for _, c := range cmds {
log.Debug("| Looking for %s in standard PATH %s", c, path)
fullc, err := exec.LookPath(c)
if err == nil {
log.Debug("- Found %s", fullc)
return fullc, nil
}
}
for _, ep := range extraPaths {
for _, c := range cmds {
full := filepath.Join(ep, c)
if checkFull(full) {
return full, nil
}
}
}
log.Debug("- FindPinentry: none found")
return "", fmt.Errorf("No pinentry found, checked a bunch of different places")
}
func (pe *Pinentry) GetTerminalName() {
// Noop on all platforms but windows
}