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package state
import (
"encoding/gob"
"os"
"path"
"git.ophivana.moe/cat/fortify/internal"
)
// we unfortunately have to assume there are never races between processes
// this and launcher should eventually be replaced by a server process
type launcherState struct {
PID int
Launcher string
Argv []string
Command []string
Capability internal.Enablements
}
// ReadLaunchers reads all launcher state file entries for the requested user
// and if decode is true decodes these launchers as well.
func ReadLaunchers(runDirPath, uid string, decode bool) ([]*launcherState, error) {
var f *os.File
var r []*launcherState
launcherPrefix := path.Join(runDirPath, uid)
if pl, err := os.ReadDir(launcherPrefix); err != nil {
return nil, err
} else {
for _, e := range pl {
if err = func() error {
if f, err = os.Open(path.Join(launcherPrefix, e.Name())); err != nil {
return err
} else {
defer func() {
if f.Close() != nil {
// unreachable
panic("foreign state file closed prematurely")
}
}()
var s launcherState
r = append(r, &s)
if decode {
return gob.NewDecoder(f).Decode(&s)
} else {
return nil
}
}
}(); err != nil {
return nil, err
}
}
}
return r, nil
}
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