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package state
import (
"fmt"
"os"
"path"
"strconv"
"strings"
"text/tabwriter"
"time"
"git.ophivana.moe/cat/fortify/internal"
"git.ophivana.moe/cat/fortify/internal/verbose"
)
// MustPrintLauncherStateSimpleGlobal prints active launcher states of all simple stores
// in an implementation-specific way.
func MustPrintLauncherStateSimpleGlobal(w **tabwriter.Writer) {
sc := internal.GetSC()
now := time.Now().UTC()
// read runtime directory to get all UIDs
if dirs, err := os.ReadDir(sc.RunDirPath); err != nil {
fmt.Println("cannot read runtime directory:", err)
os.Exit(1)
} else {
for _, e := range dirs {
// skip non-directories
if !e.IsDir() {
verbose.Println("skipped non-directory entry", e.Name())
continue
}
// skip non-numerical names
if _, err = strconv.Atoi(e.Name()); err != nil {
verbose.Println("skipped non-uid entry", e.Name())
continue
}
// obtain temporary store
s := NewSimple(sc.RunDirPath, 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 {
fmt.Printf("warn: error closing store for user %s: %s\n", 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 !verbose.Get() {
_, _ = fmt.Fprintln(*w, "\tUID\tPID\tUptime\tEnablements\tLauncher\tCommand")
} else {
// argv is emitted in body when verbose
_, _ = fmt.Fprintln(*w, "\tUID\tPID\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 := Enablement(0); i < EnableLength; i++ {
if state.Capability.Has(i) {
ets.WriteString(", " + i.String())
}
}
// prevent an empty string when
if ets.Len() == 0 {
ets.WriteString("(No enablements)")
}
if !verbose.Get() {
_, _ = fmt.Fprintf(*w, "\t%s\t%d\t%s\t%s\t%s\t%s\n",
s.path[len(s.path)-1], state.PID, now.Sub(state.Time).Round(time.Second).String(), strings.TrimPrefix(ets.String(), ", "), state.Launcher,
state.Command)
} else {
// emit argv instead when verbose
_, _ = fmt.Fprintf(*w, "\t%s\t%d\t%s\n",
s.path[len(s.path)-1], state.PID, state.Argv)
}
}
return nil
}()
}); err != nil {
fmt.Printf("cannot perform action on store '%s': %s\n", path.Join(s.path...), err)
if !ok {
fmt.Println("warn: store faulted before printing")
os.Exit(1)
}
}
if innerErr != nil {
fmt.Printf("cannot print launcher state for store '%s': %s\n", path.Join(s.path...), innerErr)
os.Exit(1)
}
}
|
