86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
package linux
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import (
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"errors"
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"io"
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"io/fs"
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"os"
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"os/exec"
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"os/user"
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"sync"
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"git.ophivana.moe/security/fortify/internal"
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"git.ophivana.moe/security/fortify/internal/fmsg"
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)
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// Std implements System using the standard library.
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type Std struct {
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paths Paths
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pathsOnce sync.Once
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sdBooted bool
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sdBootedOnce sync.Once
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fshim string
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fshimOnce sync.Once
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}
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func (s *Std) Geteuid() int { return os.Geteuid() }
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func (s *Std) LookupEnv(key string) (string, bool) { return os.LookupEnv(key) }
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func (s *Std) TempDir() string { return os.TempDir() }
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func (s *Std) LookPath(file string) (string, error) { return exec.LookPath(file) }
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func (s *Std) Executable() (string, error) { return os.Executable() }
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func (s *Std) Lookup(username string) (*user.User, error) { return user.Lookup(username) }
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func (s *Std) ReadDir(name string) ([]os.DirEntry, error) { return os.ReadDir(name) }
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func (s *Std) Stat(name string) (fs.FileInfo, error) { return os.Stat(name) }
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func (s *Std) Open(name string) (fs.File, error) { return os.Open(name) }
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func (s *Std) Exit(code int) { fmsg.Exit(code) }
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func (s *Std) Stdout() io.Writer { return os.Stdout }
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const xdgRuntimeDir = "XDG_RUNTIME_DIR"
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func (s *Std) FshimPath() string {
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s.fshimOnce.Do(func() {
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p, ok := internal.Path(internal.Fshim)
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if !ok {
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fmsg.Fatal("invalid fshim path, this copy of fortify is not compiled correctly")
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}
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s.fshim = p
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})
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return s.fshim
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}
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func (s *Std) Paths() Paths {
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s.pathsOnce.Do(func() { CopyPaths(s, &s.paths) })
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return s.paths
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}
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func (s *Std) SdBooted() bool {
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s.sdBootedOnce.Do(func() { s.sdBooted = copySdBooted() })
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return s.sdBooted
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}
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const systemdCheckPath = "/run/systemd/system"
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func copySdBooted() bool {
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if v, err := sdBooted(); err != nil {
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fmsg.Println("cannot read systemd marker:", err)
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return false
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} else {
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return v
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}
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}
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func sdBooted() (bool, error) {
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_, err := os.Stat(systemdCheckPath)
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if err != nil {
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if errors.Is(err, fs.ErrNotExist) {
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err = nil
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}
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return false, err
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}
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return true, nil
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}
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