122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
package state
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import (
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"errors"
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"fmt"
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"os"
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"path"
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"strconv"
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"strings"
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"text/tabwriter"
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"time"
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"git.ophivana.moe/security/fortify/internal/fmsg"
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"git.ophivana.moe/security/fortify/internal/system"
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)
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// MustPrintLauncherStateSimpleGlobal prints active launcher states of all simple stores
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// in an implementation-specific way.
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func MustPrintLauncherStateSimpleGlobal(w **tabwriter.Writer, runDir string) {
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now := time.Now().UTC()
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// read runtime directory to get all UIDs
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if dirs, err := os.ReadDir(path.Join(runDir, "state")); err != nil && !errors.Is(err, os.ErrNotExist) {
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fmsg.Fatal("cannot read runtime directory:", err)
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} else {
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for _, e := range dirs {
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// skip non-directories
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if !e.IsDir() {
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fmsg.VPrintf("skipped non-directory entry %q", e.Name())
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continue
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}
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// skip non-numerical names
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if _, err = strconv.Atoi(e.Name()); err != nil {
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fmsg.VPrintf("skipped non-uid entry %q", e.Name())
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continue
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}
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// obtain temporary store
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s := NewSimple(runDir, e.Name()).(*simpleStore)
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// print states belonging to this store
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s.mustPrintLauncherState(w, now)
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// mustPrintLauncherState causes store activity so store needs to be closed
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if err = s.Close(); err != nil {
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fmsg.Printf("cannot close store for user %q: %s", e.Name(), err)
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}
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}
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}
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}
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func (s *simpleStore) mustPrintLauncherState(w **tabwriter.Writer, now time.Time) {
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var innerErr error
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if ok, err := s.Do(func(b Backend) {
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innerErr = func() error {
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// read launcher states
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states, err := b.Load()
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if err != nil {
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return err
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}
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// initialise tabwriter if nil
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if *w == nil {
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*w = tabwriter.NewWriter(os.Stdout, 0, 1, 4, ' ', 0)
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// write header when initialising
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if !fmsg.Verbose() {
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_, _ = fmt.Fprintln(*w, "\tPID\tApp\tUptime\tEnablements\tCommand")
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} else {
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// argv is emitted in body when verbose
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_, _ = fmt.Fprintln(*w, "\tPID\tApp\tArgv")
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}
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}
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// print each state
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for _, state := range states {
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// skip nil states
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if state == nil {
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_, _ = fmt.Fprintln(*w, "\tnil state entry")
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continue
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}
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// build enablements string
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ets := strings.Builder{}
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// append enablement strings in order
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for i := system.Enablement(0); i < system.Enablement(system.ELen); i++ {
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if state.Capability.Has(i) {
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ets.WriteString(", " + i.String())
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}
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}
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// prevent an empty string when
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if ets.Len() == 0 {
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ets.WriteString("(No enablements)")
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}
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if !fmsg.Verbose() {
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_, _ = fmt.Fprintf(*w, "\t%d\t%s\t%s\t%s\t%s\n",
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state.PID, s.path[len(s.path)-1], now.Sub(state.Time).Round(time.Second).String(), strings.TrimPrefix(ets.String(), ", "),
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state.Command)
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} else {
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// emit argv instead when verbose
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_, _ = fmt.Fprintf(*w, "\t%d\t%s\t%s\n",
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state.PID, s.path[len(s.path)-1], state.Argv)
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}
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}
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return nil
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}()
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}); err != nil {
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fmsg.Printf("cannot perform action on store %q: %s", path.Join(s.path...), err)
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if !ok {
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fmsg.Fatal("store faulted before printing")
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}
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}
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if innerErr != nil {
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fmsg.Fatalf("cannot print launcher state for store %q: %s", path.Join(s.path...), innerErr)
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}
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}
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