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package internal
import "C"
import (
"fmt"
. "ioriotng/internal/generated/types"
bpf "github.com/aquasecurity/libbpfgo"
)
type openFile struct {
fd int32
path string
}
func (o openFile) String() string {
return fmt.Sprintf("(%d) %s", o.fd, o.path)
}
type Event interface {
String() string
TID() uint32
Timestamp() uint32
Recycle()
}
func human(enterEv, exitEv Event) string {
return fmt.Sprintf("%08d µs %s %s",
exitEv.Timestamp()-enterEv.Timestamp(), enterEv, exitEv)
}
func eventLoop(bpfModule *bpf.Module, ch <-chan []byte) {
enterEvs := make(map[uint32]Event)
for raw := range ch {
var exitEv Event
switch EventType(raw[0]) {
case ENTER_OPEN_EVENT:
ev := NewOpenEnterEvent(raw)
enterEvs[ev.Tid] = ev
case EXIT_OPEN_EVENT:
ev := NewFdEvent(raw)
if enterEv, ok := enterEvs[ev.Tid]; ok {
fmt.Println(human(enterEv, ev))
enterEv.Recycle()
}
ev.Recycle()
case ENTER_FD_EVENT:
ev := NewFdEvent(raw)
enterEvs[ev.Tid] = ev
case EXIT_FD_EVENT:
exitEv = NewFdEvent(raw)
case EXIT_NULL_EVENT:
exitEv = NewNullEvent(raw)
case EXIT_RET_EVENT:
exitEv = NewRetEvent(raw)
default:
panic(fmt.Sprintf("Unknown event type %s", EventType(raw[0])))
}
if exitEv == nil {
continue
}
if enterEv, ok := enterEvs[exitEv.TID()]; ok {
fmt.Println(human(enterEv, exitEv))
enterEv.Recycle()
}
exitEv.Recycle()
}
fmt.Println("Good bye")
}
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