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